Merge branch 'posix_tz' into posix_tz_avoid_linking_scanf

.clang-tidy.hash

@@ -1 +1 @@
-cf3d341206b4184ec8b7fe85141aef4fe4696aa720c3f8a06d4e57930574bdab
+5eb1e5852765114ad06533220d3160b6c23f5ccefc4de41828699de5dfff5ad6

.github/actions/build-image/action.yaml

@@ -47,7 +47,7 @@ runs:
 
     - name: Build and push to ghcr by digest
       id: build-ghcr
-      uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
+      uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 # v6.19.2
       env:
         DOCKER_BUILD_SUMMARY: false
         DOCKER_BUILD_RECORD_UPLOAD: false
@@ -73,7 +73,7 @@ runs:
 
     - name: Build and push to dockerhub by digest
       id: build-dockerhub
-      uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
+      uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 # v6.19.2
       env:
         DOCKER_BUILD_SUMMARY: false
         DOCKER_BUILD_RECORD_UPLOAD: false

.github/workflows/ci.yml

@@ -115,6 +115,7 @@ jobs:
         python-version:
           - "3.11"
           - "3.13"
+          - "3.14"
         os:
           - ubuntu-latest
           - macOS-latest

.github/workflows/codeql.yml

@@ -58,7 +58,7 @@ jobs:
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@b20883b0cd1f46c72ae0ba6d1090936928f9fa30 # v4.32.0
+        uses: github/codeql-action/init@89a39a4e59826350b863aa6b6252a07ad50cf83e # v4.32.4
         with:
           languages: ${{ matrix.language }}
           build-mode: ${{ matrix.build-mode }}
@@ -86,6 +86,6 @@ jobs:
           exit 1
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@b20883b0cd1f46c72ae0ba6d1090936928f9fa30 # v4.32.0
+        uses: github/codeql-action/analyze@89a39a4e59826350b863aa6b6252a07ad50cf83e # v4.32.4
         with:
           category: "/language:${{matrix.language}}"

.github/workflows/stale.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Stale
-        uses: actions/stale@997185467fa4f803885201cee163a9f38240193d # v10.1.1
+        uses: actions/stale@b5d41d4e1d5dceea10e7104786b73624c18a190f # v10.2.0
         with:
           debug-only: ${{ github.ref != 'refs/heads/dev' }} # Dry-run when not run on dev branch
           remove-stale-when-updated: true

.pre-commit-config.yaml

@@ -11,7 +11,7 @@ ci:
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.14.14
+    rev: v0.15.2
     hooks:
       # Run the linter.
       - id: ruff

CODEOWNERS

@@ -134,6 +134,7 @@ esphome/components/dfplayer/* @glmnet
 esphome/components/dfrobot_sen0395/* @niklasweber
 esphome/components/dht/* @OttoWinter
 esphome/components/display_menu_base/* @numo68
+esphome/components/dlms_meter/* @SimonFischer04
 esphome/components/dps310/* @kbx81
 esphome/components/ds1307/* @badbadc0ffee
 esphome/components/ds2484/* @mrk-its
@@ -212,6 +213,7 @@ esphome/components/hbridge/light/* @DotNetDann
 esphome/components/hbridge/switch/* @dwmw2
 esphome/components/hc8/* @omartijn
 esphome/components/hdc2010/* @optimusprimespace @ssieb
+esphome/components/hdc302x/* @joshuasing
 esphome/components/he60r/* @clydebarrow
 esphome/components/heatpumpir/* @rob-deutsch
 esphome/components/hitachi_ac424/* @sourabhjaiswal
@@ -410,6 +412,7 @@ esphome/components/rp2040_pwm/* @jesserockz
 esphome/components/rpi_dpi_rgb/* @clydebarrow
 esphome/components/rtl87xx/* @kuba2k2
 esphome/components/rtttl/* @glmnet
+esphome/components/runtime_image/* @clydebarrow @guillempages @kahrendt
 esphome/components/runtime_stats/* @bdraco
 esphome/components/rx8130/* @beormund
 esphome/components/safe_mode/* @jsuanet @kbx81 @paulmonigatti
@@ -531,7 +534,7 @@ esphome/components/uart/packet_transport/* @clydebarrow
 esphome/components/udp/* @clydebarrow
 esphome/components/ufire_ec/* @pvizeli
 esphome/components/ufire_ise/* @pvizeli
-esphome/components/ultrasonic/* @OttoWinter
+esphome/components/ultrasonic/* @ssieb @swoboda1337
 esphome/components/update/* @jesserockz
 esphome/components/uponor_smatrix/* @kroimon
 esphome/components/usb_cdc_acm/* @kbx81

Doxyfile

@@ -48,7 +48,7 @@ PROJECT_NAME           = ESPHome
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 2026.2.0-dev
+PROJECT_NUMBER         = 2026.3.0-dev
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a

docker/Dockerfile

@@ -9,7 +9,8 @@ FROM ghcr.io/esphome/docker-base:${BUILD_OS}-ha-addon-${BUILD_BASE_VERSION} AS b
 ARG BUILD_TYPE
 FROM base-source-${BUILD_TYPE} AS base
 
-RUN git config --system --add safe.directory "*"
+RUN git config --system --add safe.directory "*" \
+    && git config --system advice.detachedHead false
 
 # Install build tools for Python packages that require compilation
 # (e.g., ruamel.yaml.clibz used by ESP-IDF's idf-component-manager)
@@ -23,7 +24,7 @@ RUN if command -v apk > /dev/null; then \
 
 ENV PIP_DISABLE_PIP_VERSION_CHECK=1
 
-RUN pip install --no-cache-dir -U pip uv==0.6.14
+RUN pip install --no-cache-dir -U pip uv==0.10.1
 
 COPY requirements.txt /
 

esphome/__main__.py

@@ -294,8 +294,13 @@ def has_api() -> bool:
 
 
 def has_ota() -> bool:
-    """Check if OTA is available."""
-    return CONF_OTA in CORE.config
+    """Check if OTA upload is available (requires platform: esphome)."""
+    if CONF_OTA not in CORE.config:
+        return False
+    return any(
+        ota_item.get(CONF_PLATFORM) == CONF_ESPHOME
+        for ota_item in CORE.config[CONF_OTA]
+    )
 
 
 def has_mqtt_ip_lookup() -> bool:
@@ -426,6 +431,14 @@ def run_miniterm(config: ConfigType, port: str, args) -> int:
         return 1
     _LOGGER.info("Starting log output from %s with baud rate %s", port, baud_rate)
 
+    process_stacktrace = None
+
+    try:
+        module = importlib.import_module("esphome.components." + CORE.target_platform)
+        process_stacktrace = getattr(module, "process_stacktrace")
+    except AttributeError:
+        pass
+
     backtrace_state = False
     ser = serial.Serial()
     ser.baudrate = baud_rate
@@ -467,9 +480,14 @@ def run_miniterm(config: ConfigType, port: str, args) -> int:
                             )
                             safe_print(parser.parse_line(line, time_str))
 
-                            backtrace_state = platformio_api.process_stacktrace(
-                                config, line, backtrace_state=backtrace_state
-                            )
+                            if process_stacktrace:
+                                backtrace_state = process_stacktrace(
+                                    config, line, backtrace_state
+                                )
+                            else:
+                                backtrace_state = platformio_api.process_stacktrace(
+                                    config, line, backtrace_state=backtrace_state
+                                )
                     except serial.SerialException:
                         _LOGGER.error("Serial port closed!")
                         return 0
@@ -939,12 +957,6 @@ def command_clean_all(args: ArgsProtocol) -> int | None:
     return 0
 
 
-def command_mqtt_fingerprint(args: ArgsProtocol, config: ConfigType) -> int | None:
-    from esphome import mqtt
-
-    return mqtt.get_fingerprint(config)
-
-
 def command_version(args: ArgsProtocol) -> int | None:
     safe_print(f"Version: {const.__version__}")
     return 0
@@ -1232,7 +1244,6 @@ POST_CONFIG_ACTIONS = {
     "run": command_run,
     "clean": command_clean,
     "clean-mqtt": command_clean_mqtt,
-    "mqtt-fingerprint": command_mqtt_fingerprint,
     "idedata": command_idedata,
     "rename": command_rename,
     "discover": command_discover,
@@ -1446,13 +1457,6 @@ def parse_args(argv):
     )
     parser_wizard.add_argument("configuration", help="Your YAML configuration file.")
 
-    parser_fingerprint = subparsers.add_parser(
-        "mqtt-fingerprint", help="Get the SSL fingerprint from a MQTT broker."
-    )
-    parser_fingerprint.add_argument(
-        "configuration", help="Your YAML configuration file(s).", nargs="+"
-    )
-
     subparsers.add_parser("version", help="Print the ESPHome version and exit.")
 
     parser_clean = subparsers.add_parser(

esphome/analyze_memory/__init__.py

@@ -12,7 +12,6 @@ from .const import (
     CORE_SUBCATEGORY_PATTERNS,
     DEMANGLED_PATTERNS,
     ESPHOME_COMPONENT_PATTERN,
-    SECTION_TO_ATTR,
     SYMBOL_PATTERNS,
 )
 from .demangle import batch_demangle
@@ -44,6 +43,7 @@ _READELF_SECTION_PATTERN = re.compile(
 # Component category prefixes
 _COMPONENT_PREFIX_ESPHOME = "[esphome]"
 _COMPONENT_PREFIX_EXTERNAL = "[external]"
+_COMPONENT_PREFIX_LIB = "[lib]"
 _COMPONENT_CORE = f"{_COMPONENT_PREFIX_ESPHOME}core"
 _COMPONENT_API = f"{_COMPONENT_PREFIX_ESPHOME}api"
 
@@ -57,6 +57,16 @@ SymbolInfoType = tuple[str, int, str]
 # RAM sections - symbols in these sections consume RAM
 RAM_SECTIONS = frozenset([".data", ".bss"])
 
+# nm symbol types for global/weak defined symbols (used for library symbol mapping)
+# Only global (uppercase) and weak symbols are safe to use - local symbols (lowercase)
+# can have name collisions across compilation units
+_NM_DEFINED_GLOBAL_TYPES = frozenset({"T", "D", "B", "R", "W", "V"})
+
+# Pattern matching compiler-generated local names that can collide across compilation
+# units (e.g., packet$19, buf$20, flag$5261). These are unsafe for name-based lookup.
+# Does NOT match mangled C++ names with optimization suffixes (e.g., func$isra$0).
+_COMPILER_LOCAL_PATTERN = re.compile(r"^[a-zA-Z_]\w*\$\d+$")
+
 
 @dataclass
 class MemorySection:
@@ -91,6 +101,17 @@ class ComponentMemory:
     bss_size: int = 0  # Uninitialized data (ram only)
     symbol_count: int = 0
 
+    def add_section_size(self, section_name: str, size: int) -> None:
+        """Add size to the appropriate attribute for a section."""
+        if section_name == ".text":
+            self.text_size += size
+        elif section_name == ".rodata":
+            self.rodata_size += size
+        elif section_name == ".data":
+            self.data_size += size
+        elif section_name == ".bss":
+            self.bss_size += size
+
     @property
     def flash_total(self) -> int:
         """Total flash usage (text + rodata + data)."""
@@ -167,12 +188,23 @@ class MemoryAnalyzer:
         self._elf_symbol_names: set[str] = set()
         # SDK symbols not in ELF (static/local symbols from closed-source libs)
         self._sdk_symbols: list[SDKSymbol] = []
+        # CSWTCH symbols: list of (name, size, source_file, component)
+        self._cswtch_symbols: list[tuple[str, int, str, str]] = []
+        # Library symbol mapping: symbol_name -> library_name
+        self._lib_symbol_map: dict[str, str] = {}
+        # Library dir to name mapping: "lib641" -> "espsoftwareserial",
+        # "espressif__mdns" -> "mdns"
+        self._lib_hash_to_name: dict[str, str] = {}
+        # Heuristic category to library redirect: "mdns_lib" -> "[lib]mdns"
+        self._heuristic_to_lib: dict[str, str] = {}
 
     def analyze(self) -> dict[str, ComponentMemory]:
         """Analyze the ELF file and return component memory usage."""
         self._parse_sections()
         self._parse_symbols()
+        self._scan_libraries()
         self._categorize_symbols()
+        self._analyze_cswtch_symbols()
         self._analyze_sdk_libraries()
         return dict(self.components)
 
@@ -255,8 +287,7 @@ class MemoryAnalyzer:
                 comp_mem.symbol_count += 1
 
                 # Update the appropriate size attribute based on section
-                if attr_name := SECTION_TO_ATTR.get(section_name):
-                    setattr(comp_mem, attr_name, getattr(comp_mem, attr_name) + size)
+                comp_mem.add_section_size(section_name, size)
 
                 # Track uncategorized symbols
                 if component == "other" and size > 0:
@@ -316,15 +347,19 @@ class MemoryAnalyzer:
             # If no component match found, it's core
             return _COMPONENT_CORE
 
+        # Check library symbol map (more accurate than heuristic patterns)
+        if lib_name := self._lib_symbol_map.get(symbol_name):
+            return f"{_COMPONENT_PREFIX_LIB}{lib_name}"
+
         # Check against symbol patterns
         for component, patterns in SYMBOL_PATTERNS.items():
             if any(pattern in symbol_name for pattern in patterns):
-                return component
+                return self._heuristic_to_lib.get(component, component)
 
         # Check against demangled patterns
         for component, patterns in DEMANGLED_PATTERNS.items():
             if any(pattern in demangled for pattern in patterns):
-                return component
+                return self._heuristic_to_lib.get(component, component)
 
         # Special cases that need more complex logic
 
@@ -372,6 +407,610 @@ class MemoryAnalyzer:
 
         return "Other Core"
 
+    def _discover_pio_libraries(
+        self,
+        libraries: dict[str, list[Path]],
+        hash_to_name: dict[str, str],
+    ) -> None:
+        """Discover PlatformIO third-party libraries from the build directory.
+
+        Scans ``lib<hex>/`` directories under ``.pioenvs/<env>/`` to find
+        library names and their ``.a`` archive or ``.o`` file paths.
+
+        Args:
+            libraries: Dict to populate with library name -> file path list mappings.
+                Prefers ``.a`` archives when available, falls back to ``.o`` files
+                (e.g., pioarduino ESP32 Arduino builds only produce ``.o`` files).
+            hash_to_name: Dict to populate with dir name -> library name mappings
+                for CSWTCH attribution (e.g., ``lib641`` -> ``espsoftwareserial``).
+        """
+        build_dir = self.elf_path.parent
+
+        for entry in build_dir.iterdir():
+            if not entry.is_dir() or not entry.name.startswith("lib"):
+                continue
+            # Validate that the suffix after "lib" is a hex hash
+            hex_part = entry.name[3:]
+            if not hex_part:
+                continue
+            try:
+                int(hex_part, 16)
+            except ValueError:
+                continue
+
+            # Each lib<hex>/ directory contains a subdirectory named after the library
+            for lib_subdir in entry.iterdir():
+                if not lib_subdir.is_dir():
+                    continue
+                lib_name = lib_subdir.name.lower()
+
+                # Prefer .a archive (lib<LibraryName>.a), fall back to .o files
+                # e.g., lib72a/ESPAsyncTCP/... has lib72a/libESPAsyncTCP.a
+                archive = entry / f"lib{lib_subdir.name}.a"
+                if archive.exists():
+                    file_paths = [archive]
+                elif archives := list(entry.glob("*.a")):
+                    # Case-insensitive fallback
+                    file_paths = [archives[0]]
+                else:
+                    # No .a archive (e.g., pioarduino CMake builds) - use .o files
+                    file_paths = sorted(lib_subdir.rglob("*.o"))
+
+                if file_paths:
+                    libraries[lib_name] = file_paths
+                    hash_to_name[entry.name] = lib_name
+                    _LOGGER.debug(
+                        "Discovered PlatformIO library: %s -> %s",
+                        lib_subdir.name,
+                        file_paths[0],
+                    )
+
+    def _discover_idf_managed_components(
+        self,
+        libraries: dict[str, list[Path]],
+        hash_to_name: dict[str, str],
+    ) -> None:
+        """Discover ESP-IDF managed component libraries from the build directory.
+
+        ESP-IDF managed components (from the IDF component registry) use a
+        ``<vendor>__<name>`` naming convention. Source files live under
+        ``managed_components/<vendor>__<name>/`` and the compiled archives are at
+        ``esp-idf/<vendor>__<name>/lib<vendor>__<name>.a``.
+
+        Args:
+            libraries: Dict to populate with library name -> file path list mappings.
+            hash_to_name: Dict to populate with dir name -> library name mappings
+                for CSWTCH attribution (e.g., ``espressif__mdns`` -> ``mdns``).
+        """
+        build_dir = self.elf_path.parent
+
+        managed_dir = build_dir / "managed_components"
+        if not managed_dir.is_dir():
+            return
+
+        espidf_dir = build_dir / "esp-idf"
+
+        for entry in managed_dir.iterdir():
+            if not entry.is_dir() or "__" not in entry.name:
+                continue
+
+            # Extract the short name: espressif__mdns -> mdns
+            full_name = entry.name  # e.g., espressif__mdns
+            short_name = full_name.split("__", 1)[1].lower()
+
+            # Find the .a archive under esp-idf/<vendor>__<name>/
+            archive = espidf_dir / full_name / f"lib{full_name}.a"
+            if archive.exists():
+                libraries[short_name] = [archive]
+                hash_to_name[full_name] = short_name
+                _LOGGER.debug(
+                    "Discovered IDF managed component: %s -> %s",
+                    short_name,
+                    archive,
+                )
+
+    def _build_library_symbol_map(
+        self, libraries: dict[str, list[Path]]
+    ) -> dict[str, str]:
+        """Build a symbol-to-library mapping from library archives or object files.
+
+        Runs ``nm --defined-only`` on each ``.a`` or ``.o`` file to collect
+        global and weak defined symbols.
+
+        Args:
+            libraries: Dictionary mapping library name to list of file paths
+                (``.a`` archives or ``.o`` object files).
+
+        Returns:
+            Dictionary mapping symbol name to library name.
+        """
+        symbol_map: dict[str, str] = {}
+
+        if not self.nm_path:
+            return symbol_map
+
+        for lib_name, file_paths in libraries.items():
+            result = run_tool(
+                [self.nm_path, "--defined-only", *(str(p) for p in file_paths)],
+                timeout=10,
+            )
+            if result is None or result.returncode != 0:
+                continue
+
+            for line in result.stdout.splitlines():
+                parts = line.split()
+                if len(parts) < 3:
+                    continue
+
+                sym_type = parts[-2]
+                sym_name = parts[-1]
+
+                # Include global defined symbols (uppercase) and weak symbols (W/V)
+                if sym_type in _NM_DEFINED_GLOBAL_TYPES:
+                    symbol_map[sym_name] = lib_name
+
+        return symbol_map
+
+    @staticmethod
+    def _build_heuristic_to_lib_mapping(
+        library_names: set[str],
+    ) -> dict[str, str]:
+        """Build mapping from heuristic pattern categories to discovered libraries.
+
+        Heuristic categories like ``mdns_lib``, ``web_server_lib``, ``async_tcp``
+        exist as approximations for library attribution.  When we discover the
+        actual library, symbols matching those heuristics should be redirected
+        to the ``[lib]`` category instead.
+
+        The mapping is built by checking if the normalized category name
+        (stripped of ``_lib`` suffix and underscores) appears as a substring
+        of any discovered library name.
+
+        Examples::
+
+            mdns_lib -> mdns -> in "mdns" or "esp8266mdns" -> [lib]mdns
+            web_server_lib -> webserver -> in "espasyncwebserver" -> [lib]espasyncwebserver
+            async_tcp -> asynctcp -> in "espasynctcp" -> [lib]espasynctcp
+
+        Args:
+            library_names: Set of discovered library names (lowercase).
+
+        Returns:
+            Dictionary mapping heuristic category to ``[lib]<name>`` string.
+        """
+        mapping: dict[str, str] = {}
+        all_categories = set(SYMBOL_PATTERNS) | set(DEMANGLED_PATTERNS)
+
+        for category in all_categories:
+            base = category.removesuffix("_lib").replace("_", "")
+            # Collect all libraries whose name contains the base string
+            candidates = [lib_name for lib_name in library_names if base in lib_name]
+            if not candidates:
+                continue
+
+            # Choose a deterministic "best" match:
+            #   1. Prefer exact name matches over substring matches.
+            #   2. Among non-exact matches, prefer the shortest library name.
+            #   3. Break remaining ties lexicographically.
+            best_lib = min(
+                candidates,
+                key=lambda lib_name, _base=base: (
+                    lib_name != _base,
+                    len(lib_name),
+                    lib_name,
+                ),
+            )
+            mapping[category] = f"{_COMPONENT_PREFIX_LIB}{best_lib}"
+
+        if mapping:
+            _LOGGER.debug(
+                "Heuristic-to-library redirects: %s",
+                ", ".join(f"{k} -> {v}" for k, v in sorted(mapping.items())),
+            )
+
+        return mapping
+
+    def _parse_map_file(self) -> dict[str, str] | None:
+        """Parse linker map file to build authoritative symbol-to-library mapping.
+
+        The linker map file contains the definitive source attribution for every
+        symbol, including local/static ones that ``nm`` cannot safely export.
+
+        Map file format (GNU ld)::
+
+            .text._mdns_service_task
+                        0x400e9fdc      0x65c  .pioenvs/env/esp-idf/espressif__mdns/libespressif__mdns.a(mdns.c.o)
+
+        Each section entry has a ``.section.symbol_name`` line followed by an
+        indented line with address, size, and source path.
+
+        Returns:
+            Symbol-to-library dict, or ``None`` if no usable map file exists.
+        """
+        map_path = self.elf_path.with_suffix(".map")
+        if not map_path.exists() or map_path.stat().st_size < 10000:
+            return None
+
+        _LOGGER.info("Parsing linker map file: %s", map_path.name)
+
+        try:
+            map_text = map_path.read_text(encoding="utf-8", errors="replace")
+        except OSError as err:
+            _LOGGER.warning("Failed to read map file: %s", err)
+            return None
+
+        symbol_map: dict[str, str] = {}
+        current_symbol: str | None = None
+        section_prefixes = (".text.", ".rodata.", ".data.", ".bss.", ".literal.")
+
+        for line in map_text.splitlines():
+            # Match section.symbol line: " .text.symbol_name"
+            # Single space indent, starts with dot
+            if len(line) > 2 and line[0] == " " and line[1] == ".":
+                stripped = line.strip()
+                for prefix in section_prefixes:
+                    if stripped.startswith(prefix):
+                        current_symbol = stripped[len(prefix) :]
+                        break
+                else:
+                    current_symbol = None
+                continue
+
+            # Match source attribution line: "        0xADDR  0xSIZE  source_path"
+            if current_symbol is None:
+                continue
+
+            fields = line.split()
+            # Skip compiler-generated local names (e.g., packet$19, buf$20)
+            # that can collide across compilation units
+            if (
+                len(fields) >= 3
+                and fields[0].startswith("0x")
+                and fields[1].startswith("0x")
+                and not _COMPILER_LOCAL_PATTERN.match(current_symbol)
+            ):
+                source_path = fields[2]
+                # Check if source path contains a known library directory
+                for dir_key, lib_name in self._lib_hash_to_name.items():
+                    if dir_key in source_path:
+                        symbol_map[current_symbol] = lib_name
+                        break
+
+            current_symbol = None
+
+        return symbol_map or None
+
+    def _scan_libraries(self) -> None:
+        """Discover third-party libraries and build symbol mapping.
+
+        Scans both PlatformIO ``lib<hex>/`` directories (Arduino builds) and
+        ESP-IDF ``managed_components/`` (IDF builds) to find library archives.
+
+        Uses the linker map file for authoritative symbol attribution when
+        available, falling back to ``nm`` scanning with heuristic redirects.
+        """
+        libraries: dict[str, list[Path]] = {}
+        self._discover_pio_libraries(libraries, self._lib_hash_to_name)
+        self._discover_idf_managed_components(libraries, self._lib_hash_to_name)
+
+        if not libraries:
+            _LOGGER.debug("No third-party libraries found")
+            return
+
+        _LOGGER.info(
+            "Scanning %d libraries: %s",
+            len(libraries),
+            ", ".join(sorted(libraries)),
+        )
+
+        # Heuristic redirect catches local symbols (e.g., mdns_task_buffer$14)
+        # that can't be safely added to the symbol map due to name collisions
+        self._heuristic_to_lib = self._build_heuristic_to_lib_mapping(
+            set(libraries.keys())
+        )
+
+        # Try linker map file first (authoritative, includes local symbols)
+        map_symbols = self._parse_map_file()
+        if map_symbols is not None:
+            self._lib_symbol_map = map_symbols
+            _LOGGER.info(
+                "Built library symbol map from linker map: %d symbols",
+                len(self._lib_symbol_map),
+            )
+            return
+
+        # Fall back to nm scanning (global symbols only)
+        self._lib_symbol_map = self._build_library_symbol_map(libraries)
+
+        _LOGGER.info(
+            "Built library symbol map from nm: %d symbols from %d libraries",
+            len(self._lib_symbol_map),
+            len(libraries),
+        )
+
+    def _find_object_files_dir(self) -> Path | None:
+        """Find the directory containing object files for this build.
+
+        Returns:
+            Path to the directory containing .o files, or None if not found.
+        """
+        # The ELF is typically at .pioenvs/<env>/firmware.elf
+        # Object files are in .pioenvs/<env>/src/ and .pioenvs/<env>/lib*/
+        pioenvs_dir = self.elf_path.parent
+        if pioenvs_dir.exists() and any(pioenvs_dir.glob("src/*.o")):
+            return pioenvs_dir
+        return None
+
+    @staticmethod
+    def _parse_nm_cswtch_output(
+        output: str,
+        base_dir: Path | None,
+        cswtch_map: dict[str, list[tuple[str, int]]],
+    ) -> None:
+        """Parse nm output for CSWTCH symbols and add to cswtch_map.
+
+        Handles both ``.o`` files and ``.a`` archives.
+
+        nm output formats::
+
+            .o files:  /path/file.o:hex_addr hex_size type name
+            .a files:  /path/lib.a:member.o:hex_addr hex_size type name
+
+        For ``.o`` files, paths are made relative to *base_dir* when possible.
+        For ``.a`` archives (detected by ``:`` in the file portion), paths are
+        formatted as ``archive_stem/member.o`` (e.g. ``liblwip2-536-feat/lwip-esp.o``).
+
+        Args:
+            output: Raw stdout from ``nm --print-file-name -S``.
+            base_dir: Base directory for computing relative paths of ``.o`` files.
+                      Pass ``None`` when scanning archives outside the build tree.
+            cswtch_map: Dict to populate, mapping ``"CSWTCH$N:size"`` to source list.
+        """
+        for line in output.splitlines():
+            if "CSWTCH$" not in line:
+                continue
+
+            # Split on last ":" that precedes a hex address.
+            # For .o:  "filepath.o" : "hex_addr hex_size type name"
+            # For .a:  "filepath.a:member.o" : "hex_addr hex_size type name"
+            parts_after_colon = line.rsplit(":", 1)
+            if len(parts_after_colon) != 2:
+                continue
+
+            file_path = parts_after_colon[0]
+            fields = parts_after_colon[1].split()
+            # fields: [address, size, type, name]
+            if len(fields) < 4:
+                continue
+
+            sym_name = fields[3]
+            if not sym_name.startswith("CSWTCH$"):
+                continue
+
+            try:
+                size = int(fields[1], 16)
+            except ValueError:
+                continue
+
+            # Determine readable source path
+            # Use ".a:" to detect archive format (not bare ":" which matches
+            # Windows drive letters like "C:\...\file.o").
+            if ".a:" in file_path:
+                # Archive format: "archive.a:member.o" → "archive_stem/member.o"
+                archive_part, member = file_path.rsplit(":", 1)
+                archive_name = Path(archive_part).stem
+                rel_path = f"{archive_name}/{member}"
+            elif base_dir is not None:
+                try:
+                    rel_path = str(Path(file_path).relative_to(base_dir))
+                except ValueError:
+                    rel_path = file_path
+            else:
+                rel_path = file_path
+
+            key = f"{sym_name}:{size}"
+            cswtch_map[key].append((rel_path, size))
+
+    def _run_nm_cswtch_scan(
+        self,
+        files: list[Path],
+        base_dir: Path | None,
+        cswtch_map: dict[str, list[tuple[str, int]]],
+    ) -> None:
+        """Run nm on *files* and add any CSWTCH symbols to *cswtch_map*.
+
+        Args:
+            files: Object (``.o``) or archive (``.a``) files to scan.
+            base_dir: Base directory for relative path computation (see
+                      :meth:`_parse_nm_cswtch_output`).
+            cswtch_map: Dict to populate with results.
+        """
+        if not self.nm_path or not files:
+            return
+
+        _LOGGER.debug("Scanning %d files for CSWTCH symbols", len(files))
+
+        result = run_tool(
+            [self.nm_path, "--print-file-name", "-S"] + [str(f) for f in files],
+            timeout=30,
+        )
+        if result is None or result.returncode != 0:
+            _LOGGER.debug(
+                "nm failed or timed out scanning %d files for CSWTCH symbols",
+                len(files),
+            )
+            return
+
+        self._parse_nm_cswtch_output(result.stdout, base_dir, cswtch_map)
+
+    def _scan_cswtch_in_sdk_archives(
+        self, cswtch_map: dict[str, list[tuple[str, int]]]
+    ) -> None:
+        """Scan SDK library archives (.a) for CSWTCH symbols.
+
+        Prebuilt SDK libraries (e.g. lwip, bearssl) are not compiled from source,
+        so their CSWTCH symbols only exist inside ``.a`` archives.  Results are
+        merged into *cswtch_map* for keys not already found in ``.o`` files.
+
+        The same source file (e.g. ``lwip-esp.o``) often appears in multiple
+        library variants (``liblwip2-536.a``, ``liblwip2-1460-feat.a``, etc.),
+        so results are deduplicated by member name.
+        """
+        sdk_dirs = self._find_sdk_library_dirs()
+        if not sdk_dirs:
+            return
+
+        sdk_archives = sorted(a for sdk_dir in sdk_dirs for a in sdk_dir.glob("*.a"))
+
+        sdk_map: dict[str, list[tuple[str, int]]] = defaultdict(list)
+        self._run_nm_cswtch_scan(sdk_archives, None, sdk_map)
+
+        # Merge SDK results, deduplicating by member name.
+        for key, sources in sdk_map.items():
+            if key in cswtch_map:
+                continue
+            seen: dict[str, tuple[str, int]] = {}
+            for path, sz in sources:
+                member = Path(path).name
+                if member not in seen:
+                    seen[member] = (path, sz)
+            cswtch_map[key] = list(seen.values())
+
+    def _source_file_to_component(self, source_file: str) -> str:
+        """Map a source object file path to its component name.
+
+        Args:
+            source_file: Relative path like 'src/esphome/components/wifi/wifi_component.cpp.o'
+
+        Returns:
+            Component name like '[esphome]wifi' or the source file if unknown.
+        """
+        parts = Path(source_file).parts
+
+        # ESPHome component: src/esphome/components/<name>/...
+        if "components" in parts:
+            idx = parts.index("components")
+            if idx + 1 < len(parts):
+                component_name = parts[idx + 1]
+                if component_name in get_esphome_components():
+                    return f"{_COMPONENT_PREFIX_ESPHOME}{component_name}"
+                if component_name in self.external_components:
+                    return f"{_COMPONENT_PREFIX_EXTERNAL}{component_name}"
+
+        # ESPHome core: src/esphome/core/... or src/esphome/...
+        if "core" in parts and "esphome" in parts:
+            return _COMPONENT_CORE
+        if "esphome" in parts and "components" not in parts:
+            return _COMPONENT_CORE
+
+        # Framework/library files - check for PlatformIO library hash dirs
+        # e.g., lib65b/ESPAsyncTCP/... -> [lib]espasynctcp
+        if parts and parts[0] in self._lib_hash_to_name:
+            return f"{_COMPONENT_PREFIX_LIB}{self._lib_hash_to_name[parts[0]]}"
+
+        # ESP-IDF managed components: managed_components/espressif__mdns/... -> [lib]mdns
+        if (
+            len(parts) >= 2
+            and parts[0] == "managed_components"
+            and parts[1] in self._lib_hash_to_name
+        ):
+            return f"{_COMPONENT_PREFIX_LIB}{self._lib_hash_to_name[parts[1]]}"
+
+        # Other framework/library files - return the first path component
+        # e.g., FrameworkArduino/... -> FrameworkArduino
+        return parts[0] if parts else source_file
+
+    def _analyze_cswtch_symbols(self) -> None:
+        """Analyze CSWTCH (GCC switch table) symbols by tracing to source objects.
+
+        CSWTCH symbols are compiler-generated lookup tables for switch statements.
+        They are local symbols, so the same name can appear in different object files.
+        This method scans .o files and SDK archives to attribute them to their
+        source components.
+        """
+        obj_dir = self._find_object_files_dir()
+        if obj_dir is None:
+            _LOGGER.debug("No object files directory found, skipping CSWTCH analysis")
+            return
+
+        # Scan build-dir object files for CSWTCH symbols
+        cswtch_map: dict[str, list[tuple[str, int]]] = defaultdict(list)
+        self._run_nm_cswtch_scan(sorted(obj_dir.rglob("*.o")), obj_dir, cswtch_map)
+
+        # Also scan SDK library archives (.a) for CSWTCH symbols.
+        # Prebuilt SDK libraries (e.g. lwip, bearssl) are not compiled from source
+        # so their symbols only exist inside .a archives, not as loose .o files.
+        self._scan_cswtch_in_sdk_archives(cswtch_map)
+
+        if not cswtch_map:
+            _LOGGER.debug("No CSWTCH symbols found in object files or SDK archives")
+            return
+
+        # Collect CSWTCH symbols from the ELF (already parsed in sections)
+        # Include section_name for re-attribution of component totals
+        elf_cswtch = [
+            (symbol_name, size, section_name)
+            for section_name, section in self.sections.items()
+            for symbol_name, size, _ in section.symbols
+            if symbol_name.startswith("CSWTCH$")
+        ]
+
+        _LOGGER.debug(
+            "Found %d CSWTCH symbols in ELF, %d unique in object files",
+            len(elf_cswtch),
+            len(cswtch_map),
+        )
+
+        # Match ELF CSWTCH symbols to source files and re-attribute component totals.
+        # _categorize_symbols() already ran and put these into "other" since CSWTCH$
+        # names don't match any component pattern. We move the bytes to the correct
+        # component based on the object file mapping.
+        other_mem = self.components.get("other")
+
+        for sym_name, size, section_name in elf_cswtch:
+            key = f"{sym_name}:{size}"
+            sources = cswtch_map.get(key, [])
+
+            if len(sources) == 1:
+                source_file = sources[0][0]
+                component = self._source_file_to_component(source_file)
+            elif len(sources) > 1:
+                # Ambiguous - multiple object files have same CSWTCH name+size
+                source_file = "ambiguous"
+                component = "ambiguous"
+                _LOGGER.debug(
+                    "Ambiguous CSWTCH %s (%d B) found in %d files: %s",
+                    sym_name,
+                    size,
+                    len(sources),
+                    ", ".join(src for src, _ in sources),
+                )
+            else:
+                source_file = "unknown"
+                component = "unknown"
+
+            self._cswtch_symbols.append((sym_name, size, source_file, component))
+
+            # Re-attribute from "other" to the correct component
+            if (
+                component not in ("other", "unknown", "ambiguous")
+                and other_mem is not None
+            ):
+                other_mem.add_section_size(section_name, -size)
+                if component not in self.components:
+                    self.components[component] = ComponentMemory(component)
+                self.components[component].add_section_size(section_name, size)
+
+        # Sort by size descending
+        self._cswtch_symbols.sort(key=lambda x: x[1], reverse=True)
+
+        total_size = sum(size for _, size, _, _ in self._cswtch_symbols)
+        _LOGGER.debug(
+            "CSWTCH analysis: %d symbols, %d bytes total",
+            len(self._cswtch_symbols),
+            total_size,
+        )
+
     def get_unattributed_ram(self) -> tuple[int, int, int]:
         """Get unattributed RAM sizes (SDK/framework overhead).
 

esphome/analyze_memory/cli.py

@@ -4,6 +4,8 @@ from __future__ import annotations
 
 from collections import defaultdict
 from collections.abc import Callable
+import heapq
+from operator import itemgetter
 import sys
 from typing import TYPE_CHECKING
 
@@ -12,6 +14,7 @@ from . import (
     _COMPONENT_CORE,
     _COMPONENT_PREFIX_ESPHOME,
     _COMPONENT_PREFIX_EXTERNAL,
+    _COMPONENT_PREFIX_LIB,
     RAM_SECTIONS,
     MemoryAnalyzer,
 )
@@ -29,6 +32,10 @@ class MemoryAnalyzerCLI(MemoryAnalyzer):
     )
     # Lower threshold for RAM symbols (RAM is more constrained)
     RAM_SYMBOL_SIZE_THRESHOLD: int = 24
+    # Number of top symbols to show in the largest symbols report
+    TOP_SYMBOLS_LIMIT: int = 30
+    # Width for symbol name display in top symbols report
+    COL_TOP_SYMBOL_NAME: int = 55
 
     # Column width constants
     COL_COMPONENT: int = 29
@@ -147,6 +154,83 @@ class MemoryAnalyzerCLI(MemoryAnalyzer):
             section_label = f" [{section[1:]}]"  # .data -> [data], .bss -> [bss]
         return f"{demangled} ({size:,} B){section_label}"
 
+    def _add_top_symbols(self, lines: list[str]) -> None:
+        """Add a section showing the top largest symbols in the binary."""
+        # Collect all symbols from all components: (symbol, demangled, size, section, component)
+        all_symbols = [
+            (symbol, demangled, size, section, component)
+            for component, symbols in self._component_symbols.items()
+            for symbol, demangled, size, section in symbols
+        ]
+
+        # Get top N symbols by size using heapq for efficiency
+        top_symbols = heapq.nlargest(
+            self.TOP_SYMBOLS_LIMIT, all_symbols, key=itemgetter(2)
+        )
+
+        lines.append("")
+        lines.append(f"Top {self.TOP_SYMBOLS_LIMIT} Largest Symbols:")
+        # Calculate truncation limit from column width (leaving room for "...")
+        truncate_limit = self.COL_TOP_SYMBOL_NAME - 3
+        for i, (_, demangled, size, section, component) in enumerate(top_symbols):
+            # Format section label
+            section_label = f"[{section[1:]}]" if section else ""
+            # Truncate demangled name if too long
+            demangled_display = (
+                f"{demangled[:truncate_limit]}..."
+                if len(demangled) > self.COL_TOP_SYMBOL_NAME
+                else demangled
+            )
+            lines.append(
+                f"{i + 1:>2}. {size:>7,} B {section_label:<8} {demangled_display:<{self.COL_TOP_SYMBOL_NAME}} {component}"
+            )
+
+    def _add_cswtch_analysis(self, lines: list[str]) -> None:
+        """Add CSWTCH (GCC switch table lookup) analysis section."""
+        self._add_section_header(lines, "CSWTCH Analysis (GCC Switch Table Lookups)")
+
+        total_size = sum(size for _, size, _, _ in self._cswtch_symbols)
+        lines.append(
+            f"Total: {len(self._cswtch_symbols)} switch table(s), {total_size:,} B"
+        )
+        lines.append("")
+
+        # Group by component
+        by_component: dict[str, list[tuple[str, int, str]]] = defaultdict(list)
+        for sym_name, size, source_file, component in self._cswtch_symbols:
+            by_component[component].append((sym_name, size, source_file))
+
+        # Sort components by total size descending
+        sorted_components = sorted(
+            by_component.items(),
+            key=lambda x: sum(s[1] for s in x[1]),
+            reverse=True,
+        )
+
+        for component, symbols in sorted_components:
+            comp_total = sum(s[1] for s in symbols)
+            lines.append(f"{component} ({comp_total:,} B, {len(symbols)} tables):")
+
+            # Group by source file within component
+            by_file: dict[str, list[tuple[str, int]]] = defaultdict(list)
+            for sym_name, size, source_file in symbols:
+                by_file[source_file].append((sym_name, size))
+
+            for source_file, file_symbols in sorted(
+                by_file.items(),
+                key=lambda x: sum(s[1] for s in x[1]),
+                reverse=True,
+            ):
+                file_total = sum(s[1] for s in file_symbols)
+                lines.append(
+                    f"  {source_file} ({file_total:,} B, {len(file_symbols)} tables)"
+                )
+                for sym_name, size in sorted(
+                    file_symbols, key=lambda x: x[1], reverse=True
+                ):
+                    lines.append(f"    {size:>6,} B  {sym_name}")
+            lines.append("")
+
     def generate_report(self, detailed: bool = False) -> str:
         """Generate a formatted memory report."""
         components = sorted(
@@ -248,6 +332,9 @@ class MemoryAnalyzerCLI(MemoryAnalyzer):
             "RAM",
         )
 
+        # Top largest symbols in the binary
+        self._add_top_symbols(lines)
+
         # Add ESPHome core detailed analysis if there are core symbols
         if self._esphome_core_symbols:
             self._add_section_header(lines, f"{_COMPONENT_CORE} Detailed Analysis")
@@ -321,6 +408,11 @@ class MemoryAnalyzerCLI(MemoryAnalyzer):
             for name, mem in components
             if name.startswith(_COMPONENT_PREFIX_EXTERNAL)
         ]
+        library_components = [
+            (name, mem)
+            for name, mem in components
+            if name.startswith(_COMPONENT_PREFIX_LIB)
+        ]
 
         top_esphome_components = sorted(
             esphome_components, key=lambda x: x[1].flash_total, reverse=True
@@ -331,6 +423,11 @@ class MemoryAnalyzerCLI(MemoryAnalyzer):
             external_components, key=lambda x: x[1].flash_total, reverse=True
         )
 
+        # Include all library components
+        top_library_components = sorted(
+            library_components, key=lambda x: x[1].flash_total, reverse=True
+        )
+
         # Check if API component exists and ensure it's included
         api_component = None
         for name, mem in components:
@@ -349,10 +446,11 @@ class MemoryAnalyzerCLI(MemoryAnalyzer):
             if name in system_components_to_include
         ]
 
-        # Combine all components to analyze: top ESPHome + all external + API if not already included + system components
+        # Combine all components to analyze: top ESPHome + all external + libraries + API if not already included + system components
         components_to_analyze = (
             list(top_esphome_components)
             + list(top_external_components)
+            + list(top_library_components)
             + system_components
         )
         if api_component and api_component not in components_to_analyze:
@@ -431,6 +529,10 @@ class MemoryAnalyzerCLI(MemoryAnalyzer):
                     lines.append(f"    ... and {len(large_ram_syms) - 10} more")
             lines.append("")
 
+        # CSWTCH (GCC switch table) analysis
+        if self._cswtch_symbols:
+            self._add_cswtch_analysis(lines)
+
         lines.append(
             "Note: This analysis covers symbols in the ELF file. Some runtime allocations may not be included."
         )

esphome/analyze_memory/const.py

@@ -66,15 +66,6 @@ SECTION_MAPPING = {
     ),
 }
 
-# Section to ComponentMemory attribute mapping
-# Maps section names to the attribute name in ComponentMemory dataclass
-SECTION_TO_ATTR = {
-    ".text": "text_size",
-    ".rodata": "rodata_size",
-    ".data": "data_size",
-    ".bss": "bss_size",
-}
-
 # Component identification rules
 # Symbol patterns: patterns found in raw symbol names
 SYMBOL_PATTERNS = {
@@ -265,7 +256,7 @@ SYMBOL_PATTERNS = {
     "ipv6_stack": ["nd6_", "ip6_", "mld6_", "icmp6_", "icmp6_input"],
     # Order matters! More specific categories must come before general ones.
     # mdns must come before bluetooth to avoid "_mdns_disable_pcb" matching "ble_" pattern
-    "mdns_lib": ["mdns"],
+    "mdns_lib": ["mdns", "packet$"],
     # memory_mgmt must come before wifi_stack to catch mmu_hal_* symbols
     "memory_mgmt": [
         "mem_",
@@ -513,7 +504,9 @@ SYMBOL_PATTERNS = {
         "__FUNCTION__$",
         "DAYS_IN_MONTH",
         "_DAYS_BEFORE_MONTH",
-        "CSWTCH$",
+        # Note: CSWTCH$ symbols are GCC switch table lookup tables.
+        # They are attributed to their source object files via _analyze_cswtch_symbols()
+        # rather than being lumped into libc.
         "dst$",
         "sulp",
         "_strtol_l",  # String to long with locale
@@ -801,7 +794,6 @@ SYMBOL_PATTERNS = {
         "s_dp",
         "s_ni",
         "s_reg_dump",
-        "packet$",
         "d_mult_table",
         "K",
         "fcstab",

esphome/codegen.py

@@ -87,6 +87,7 @@ from esphome.cpp_types import (  # noqa: F401
     size_t,
     std_ns,
     std_shared_ptr,
+    std_span,
     std_string,
     std_string_ref,
     std_vector,

esphome/components/absolute_humidity/absolute_humidity.cpp

@@ -45,8 +45,6 @@ void AbsoluteHumidityComponent::dump_config() {
                 this->temperature_sensor_->get_name().c_str(), this->humidity_sensor_->get_name().c_str());
 }
 
-float AbsoluteHumidityComponent::get_setup_priority() const { return setup_priority::DATA; }
-
 void AbsoluteHumidityComponent::loop() {
   if (!this->next_update_) {
     return;
@@ -94,10 +92,7 @@ void AbsoluteHumidityComponent::loop() {
   // Calculate absolute humidity
   const float absolute_humidity = vapor_density(es, hr, temperature_k);
 
-  ESP_LOGD(TAG,
-           "Saturation vapor pressure %f kPa\n"
-           "Publishing absolute humidity %f g/m³",
-           es, absolute_humidity);
+  ESP_LOGD(TAG, "Saturation vapor pressure %f kPa, absolute humidity %f g/m³", es, absolute_humidity);
 
   // Publish absolute humidity
   this->status_clear_warning();

esphome/components/absolute_humidity/absolute_humidity.h

@@ -24,7 +24,6 @@ class AbsoluteHumidityComponent : public sensor::Sensor, public Component {
 
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   void loop() override;
 
  protected:

esphome/components/adc/adc_sensor.h

@@ -68,11 +68,6 @@ class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage
   /// This method is called during the ESPHome setup process to log the configuration.
   void dump_config() override;
 
-  /// Return the setup priority for this component.
-  /// Components with higher priority are initialized earlier during setup.
-  /// @return A float representing the setup priority.
-  float get_setup_priority() const override;
-
 #ifdef USE_ZEPHYR
   /// Set the ADC channel to be used by the ADC sensor.
   /// @param channel Pointer to an adc_dt_spec structure representing the ADC channel.

esphome/components/adc/adc_sensor_common.cpp

@@ -79,7 +79,5 @@ void ADCSensor::set_sample_count(uint8_t sample_count) {
 
 void ADCSensor::set_sampling_mode(SamplingMode sampling_mode) { this->sampling_mode_ = sampling_mode; }
 
-float ADCSensor::get_setup_priority() const { return setup_priority::DATA; }
-
 }  // namespace adc
 }  // namespace esphome

esphome/components/adc/adc_sensor_esp32.cpp

@@ -42,11 +42,11 @@ void ADCSensor::setup() {
     adc_oneshot_unit_init_cfg_t init_config = {};  // Zero initialize
     init_config.unit_id = this->adc_unit_;
     init_config.ulp_mode = ADC_ULP_MODE_DISABLE;
-#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
-    USE_ESP32_VARIANT_ESP32C61 || USE_ESP32_VARIANT_ESP32H2
+#if USE_ESP32_VARIANT_ESP32C2 || USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || \
+    USE_ESP32_VARIANT_ESP32C6 || USE_ESP32_VARIANT_ESP32C61 || USE_ESP32_VARIANT_ESP32H2
     init_config.clk_src = ADC_DIGI_CLK_SRC_DEFAULT;
-#endif  // USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 ||
-        // USE_ESP32_VARIANT_ESP32C61 || USE_ESP32_VARIANT_ESP32H2
+#endif  // USE_ESP32_VARIANT_ESP32C2 || USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 ||
+        // USE_ESP32_VARIANT_ESP32C6 || USE_ESP32_VARIANT_ESP32C61 || USE_ESP32_VARIANT_ESP32H2
     esp_err_t err = adc_oneshot_new_unit(&init_config, &ADCSensor::shared_adc_handles[this->adc_unit_]);
     if (err != ESP_OK) {
       ESP_LOGE(TAG, "Error initializing %s: %d", LOG_STR_ARG(adc_unit_to_str(this->adc_unit_)), err);
@@ -76,7 +76,7 @@ void ADCSensor::setup() {
 
 #if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
     USE_ESP32_VARIANT_ESP32C61 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4 || USE_ESP32_VARIANT_ESP32S3
-    // RISC-V variants and S3 use curve fitting calibration
+    // RISC-V variants (except C2) and S3 use curve fitting calibration
     adc_cali_curve_fitting_config_t cali_config = {};  // Zero initialize first
 #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
     cali_config.chan = this->channel_;
@@ -94,14 +94,14 @@ void ADCSensor::setup() {
       ESP_LOGW(TAG, "Curve fitting calibration failed with error %d, will use uncalibrated readings", err);
       this->setup_flags_.calibration_complete = false;
     }
-#else  // Other ESP32 variants use line fitting calibration
+#else  // ESP32, ESP32-S2, and ESP32-C2 use line fitting calibration
     adc_cali_line_fitting_config_t cali_config = {
       .unit_id = this->adc_unit_,
       .atten = this->attenuation_,
       .bitwidth = ADC_BITWIDTH_DEFAULT,
-#if !defined(USE_ESP32_VARIANT_ESP32S2)
+#if !defined(USE_ESP32_VARIANT_ESP32S2) && !defined(USE_ESP32_VARIANT_ESP32C2)
       .default_vref = 1100,  // Default reference voltage in mV
-#endif  // !defined(USE_ESP32_VARIANT_ESP32S2)
+#endif  // !defined(USE_ESP32_VARIANT_ESP32S2) && !defined(USE_ESP32_VARIANT_ESP32C2)
     };
     err = adc_cali_create_scheme_line_fitting(&cali_config, &handle);
     if (err == ESP_OK) {
@@ -112,7 +112,7 @@ void ADCSensor::setup() {
       ESP_LOGW(TAG, "Line fitting calibration failed with error %d, will use uncalibrated readings", err);
       this->setup_flags_.calibration_complete = false;
     }
-#endif  // USE_ESP32_VARIANT_ESP32C3 || ESP32C5 || ESP32C6 || ESP32C61 || ESP32H2 || ESP32P4 || ESP32S3
+#endif  // ESP32C3 || ESP32C5 || ESP32C6 || ESP32C61 || ESP32H2 || ESP32P4 || ESP32S3
   }
 
   this->setup_flags_.init_complete = true;
@@ -189,7 +189,7 @@ float ADCSensor::sample_fixed_attenuation_() {
         adc_cali_delete_scheme_curve_fitting(this->calibration_handle_);
 #else   // Other ESP32 variants use line fitting calibration
         adc_cali_delete_scheme_line_fitting(this->calibration_handle_);
-#endif  // USE_ESP32_VARIANT_ESP32C3 || ESP32C5 || ESP32C6 || ESP32C61 || ESP32H2 || ESP32P4 || ESP32S3
+#endif  // ESP32C3 || ESP32C5 || ESP32C6 || ESP32C61 || ESP32H2 || ESP32P4 || ESP32S3
         this->calibration_handle_ = nullptr;
       }
     }
@@ -247,7 +247,7 @@ float ADCSensor::sample_autorange_() {
       .unit_id = this->adc_unit_,
       .atten = atten,
       .bitwidth = ADC_BITWIDTH_DEFAULT,
-#if !defined(USE_ESP32_VARIANT_ESP32S2)
+#if !defined(USE_ESP32_VARIANT_ESP32S2) && !defined(USE_ESP32_VARIANT_ESP32C2)
       .default_vref = 1100,
 #endif
     };

esphome/components/adc128s102/sensor/adc128s102_sensor.cpp

@@ -9,8 +9,6 @@ static const char *const TAG = "adc128s102.sensor";
 
 ADC128S102Sensor::ADC128S102Sensor(uint8_t channel) : channel_(channel) {}
 
-float ADC128S102Sensor::get_setup_priority() const { return setup_priority::DATA; }
-
 void ADC128S102Sensor::dump_config() {
   LOG_SENSOR("", "ADC128S102 Sensor", this);
   ESP_LOGCONFIG(TAG, "  Pin: %u", this->channel_);

esphome/components/adc128s102/sensor/adc128s102_sensor.h

@@ -19,7 +19,6 @@ class ADC128S102Sensor : public PollingComponent,
 
   void update() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   float sample() override;
 
  protected:

esphome/components/aht10/aht10.cpp

@@ -150,8 +150,6 @@ void AHT10Component::update() {
   this->restart_read_();
 }
 
-float AHT10Component::get_setup_priority() const { return setup_priority::DATA; }
-
 void AHT10Component::dump_config() {
   ESP_LOGCONFIG(TAG, "AHT10:");
   LOG_I2C_DEVICE(this);

esphome/components/aht10/aht10.h

@@ -16,7 +16,6 @@ class AHT10Component : public PollingComponent, public i2c::I2CDevice {
   void setup() override;
   void update() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   void set_variant(AHT10Variant variant) { this->variant_ = variant; }
 
   void set_temperature_sensor(sensor::Sensor *temperature_sensor) { temperature_sensor_ = temperature_sensor; }

esphome/components/alarm_control_panel/alarm_control_panel_state.cpp

@@ -1,32 +1,15 @@
 #include "alarm_control_panel_state.h"
+#include "esphome/core/progmem.h"
 
 namespace esphome::alarm_control_panel {
 
+// Alarm control panel state strings indexed by AlarmControlPanelState enum (0-9)
+PROGMEM_STRING_TABLE(AlarmControlPanelStateStrings, "DISARMED", "ARMED_HOME", "ARMED_AWAY", "ARMED_NIGHT",
+                     "ARMED_VACATION", "ARMED_CUSTOM_BYPASS", "PENDING", "ARMING", "DISARMING", "TRIGGERED", "UNKNOWN");
+
 const LogString *alarm_control_panel_state_to_string(AlarmControlPanelState state) {
-  switch (state) {
-    case ACP_STATE_DISARMED:
-      return LOG_STR("DISARMED");
-    case ACP_STATE_ARMED_HOME:
-      return LOG_STR("ARMED_HOME");
-    case ACP_STATE_ARMED_AWAY:
-      return LOG_STR("ARMED_AWAY");
-    case ACP_STATE_ARMED_NIGHT:
-      return LOG_STR("ARMED_NIGHT");
-    case ACP_STATE_ARMED_VACATION:
-      return LOG_STR("ARMED_VACATION");
-    case ACP_STATE_ARMED_CUSTOM_BYPASS:
-      return LOG_STR("ARMED_CUSTOM_BYPASS");
-    case ACP_STATE_PENDING:
-      return LOG_STR("PENDING");
-    case ACP_STATE_ARMING:
-      return LOG_STR("ARMING");
-    case ACP_STATE_DISARMING:
-      return LOG_STR("DISARMING");
-    case ACP_STATE_TRIGGERED:
-      return LOG_STR("TRIGGERED");
-    default:
-      return LOG_STR("UNKNOWN");
-  }
+  return AlarmControlPanelStateStrings::get_log_str(static_cast<uint8_t>(state),
+                                                    AlarmControlPanelStateStrings::LAST_INDEX);
 }
 
 }  // namespace esphome::alarm_control_panel

esphome/components/am2315c/am2315c.cpp

@@ -176,7 +176,5 @@ void AM2315C::dump_config() {
   LOG_SENSOR("  ", "Humidity", this->humidity_sensor_);
 }
 
-float AM2315C::get_setup_priority() const { return setup_priority::DATA; }
-
 }  // namespace am2315c
 }  // namespace esphome

esphome/components/am2315c/am2315c.h

@@ -33,7 +33,6 @@ class AM2315C : public PollingComponent, public i2c::I2CDevice {
   void dump_config() override;
   void update() override;
   void setup() override;
-  float get_setup_priority() const override;
 
   void set_temperature_sensor(sensor::Sensor *temperature_sensor) { this->temperature_sensor_ = temperature_sensor; }
   void set_humidity_sensor(sensor::Sensor *humidity_sensor) { this->humidity_sensor_ = humidity_sensor; }

esphome/components/am2320/am2320.cpp

@@ -51,7 +51,6 @@ void AM2320Component::dump_config() {
   LOG_SENSOR("  ", "Temperature", this->temperature_sensor_);
   LOG_SENSOR("  ", "Humidity", this->humidity_sensor_);
 }
-float AM2320Component::get_setup_priority() const { return setup_priority::DATA; }
 
 bool AM2320Component::read_bytes_(uint8_t a_register, uint8_t *data, uint8_t len, uint32_t conversion) {
   if (!this->write_bytes(a_register, data, 2)) {

esphome/components/am2320/am2320.h

@@ -11,7 +11,6 @@ class AM2320Component : public PollingComponent, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   void update() override;
 
   void set_temperature_sensor(sensor::Sensor *temperature_sensor) { temperature_sensor_ = temperature_sensor; }

esphome/components/anova/anova.cpp

@@ -67,10 +67,8 @@ void Anova::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_
     case ESP_GATTC_SEARCH_CMPL_EVT: {
       auto *chr = this->parent_->get_characteristic(ANOVA_SERVICE_UUID, ANOVA_CHARACTERISTIC_UUID);
       if (chr == nullptr) {
-        ESP_LOGW(TAG,
-                 "[%s] No control service found at device, not an Anova..?\n"
-                 "[%s] Note, this component does not currently support Anova Nano.",
-                 this->get_name().c_str(), this->get_name().c_str());
+        ESP_LOGW(TAG, "[%s] No control service found at device, not an Anova..?", this->get_name().c_str());
+        ESP_LOGW(TAG, "[%s] Note, this component does not currently support Anova Nano.", this->get_name().c_str());
         break;
       }
       this->char_handle_ = chr->handle;

esphome/components/apds9960/apds9960.cpp

@@ -384,7 +384,6 @@ void APDS9960::process_dataset_(int up, int down, int left, int right) {
     }
   }
 }
-float APDS9960::get_setup_priority() const { return setup_priority::DATA; }
 bool APDS9960::is_proximity_enabled_() const {
   return
 #ifdef USE_SENSOR

esphome/components/apds9960/apds9960.h

@@ -32,7 +32,6 @@ class APDS9960 : public PollingComponent, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   void update() override;
   void loop() override;
 

esphome/components/api/__init__.py

@@ -233,8 +233,8 @@ def _consume_api_sockets(config: ConfigType) -> ConfigType:
 
     # API needs 1 listening socket + typically 3 concurrent client connections
     # (not max_connections, which is the upper limit rarely reached)
-    sockets_needed = 1 + 3
-    socket.consume_sockets(sockets_needed, "api")(config)
+    socket.consume_sockets(3, "api")(config)
+    socket.consume_sockets(1, "api", socket.SocketType.TCP_LISTEN)(config)
     return config
 
 

esphome/components/api/api.proto

@@ -45,6 +45,7 @@ service APIConnection {
   rpc time_command (TimeCommandRequest) returns (void) {}
   rpc update_command (UpdateCommandRequest) returns (void) {}
   rpc valve_command (ValveCommandRequest) returns (void) {}
+  rpc water_heater_command (WaterHeaterCommandRequest) returns (void) {}
 
   rpc subscribe_bluetooth_le_advertisements(SubscribeBluetoothLEAdvertisementsRequest) returns (void) {}
   rpc bluetooth_device_request(BluetoothDeviceRequest) returns (void) {}
@@ -1154,9 +1155,11 @@ enum WaterHeaterCommandHasField {
   WATER_HEATER_COMMAND_HAS_NONE = 0;
   WATER_HEATER_COMMAND_HAS_MODE = 1;
   WATER_HEATER_COMMAND_HAS_TARGET_TEMPERATURE = 2;
-  WATER_HEATER_COMMAND_HAS_STATE = 4;
+  WATER_HEATER_COMMAND_HAS_STATE = 4 [deprecated=true];
   WATER_HEATER_COMMAND_HAS_TARGET_TEMPERATURE_LOW = 8;
   WATER_HEATER_COMMAND_HAS_TARGET_TEMPERATURE_HIGH = 16;
+  WATER_HEATER_COMMAND_HAS_ON_STATE = 32;
+  WATER_HEATER_COMMAND_HAS_AWAY_STATE = 64;
 }
 
 message WaterHeaterCommandRequest {

esphome/components/api/api_connection.h

@@ -15,6 +15,10 @@
 #include <limits>
 #include <vector>
 
+namespace esphome {
+class ComponentIterator;
+}  // namespace esphome
+
 namespace esphome::api {
 
 // Keepalive timeout in milliseconds
@@ -28,7 +32,7 @@ static constexpr size_t MAX_INITIAL_PER_BATCH = 34;         // For clients >= AP
 static_assert(MAX_MESSAGES_PER_BATCH >= MAX_INITIAL_PER_BATCH,
               "MAX_MESSAGES_PER_BATCH must be >= MAX_INITIAL_PER_BATCH");
 
-class APIConnection final : public APIServerConnection {
+class APIConnection final : public APIServerConnectionBase {
  public:
   friend class APIServer;
   friend class ListEntitiesIterator;
@@ -47,72 +51,72 @@ class APIConnection final : public APIServerConnection {
 #endif
 #ifdef USE_COVER
   bool send_cover_state(cover::Cover *cover);
-  void cover_command(const CoverCommandRequest &msg) override;
+  void on_cover_command_request(const CoverCommandRequest &msg) override;
 #endif
 #ifdef USE_FAN
   bool send_fan_state(fan::Fan *fan);
-  void fan_command(const FanCommandRequest &msg) override;
+  void on_fan_command_request(const FanCommandRequest &msg) override;
 #endif
 #ifdef USE_LIGHT
   bool send_light_state(light::LightState *light);
-  void light_command(const LightCommandRequest &msg) override;
+  void on_light_command_request(const LightCommandRequest &msg) override;
 #endif
 #ifdef USE_SENSOR
   bool send_sensor_state(sensor::Sensor *sensor);
 #endif
 #ifdef USE_SWITCH
   bool send_switch_state(switch_::Switch *a_switch);
-  void switch_command(const SwitchCommandRequest &msg) override;
+  void on_switch_command_request(const SwitchCommandRequest &msg) override;
 #endif
 #ifdef USE_TEXT_SENSOR
   bool send_text_sensor_state(text_sensor::TextSensor *text_sensor);
 #endif
 #ifdef USE_CAMERA
   void set_camera_state(std::shared_ptr<camera::CameraImage> image);
-  void camera_image(const CameraImageRequest &msg) override;
+  void on_camera_image_request(const CameraImageRequest &msg) override;
 #endif
 #ifdef USE_CLIMATE
   bool send_climate_state(climate::Climate *climate);
-  void climate_command(const ClimateCommandRequest &msg) override;
+  void on_climate_command_request(const ClimateCommandRequest &msg) override;
 #endif
 #ifdef USE_NUMBER
   bool send_number_state(number::Number *number);
-  void number_command(const NumberCommandRequest &msg) override;
+  void on_number_command_request(const NumberCommandRequest &msg) override;
 #endif
 #ifdef USE_DATETIME_DATE
   bool send_date_state(datetime::DateEntity *date);
-  void date_command(const DateCommandRequest &msg) override;
+  void on_date_command_request(const DateCommandRequest &msg) override;
 #endif
 #ifdef USE_DATETIME_TIME
   bool send_time_state(datetime::TimeEntity *time);
-  void time_command(const TimeCommandRequest &msg) override;
+  void on_time_command_request(const TimeCommandRequest &msg) override;
 #endif
 #ifdef USE_DATETIME_DATETIME
   bool send_datetime_state(datetime::DateTimeEntity *datetime);
-  void datetime_command(const DateTimeCommandRequest &msg) override;
+  void on_date_time_command_request(const DateTimeCommandRequest &msg) override;
 #endif
 #ifdef USE_TEXT
   bool send_text_state(text::Text *text);
-  void text_command(const TextCommandRequest &msg) override;
+  void on_text_command_request(const TextCommandRequest &msg) override;
 #endif
 #ifdef USE_SELECT
   bool send_select_state(select::Select *select);
-  void select_command(const SelectCommandRequest &msg) override;
+  void on_select_command_request(const SelectCommandRequest &msg) override;
 #endif
 #ifdef USE_BUTTON
-  void button_command(const ButtonCommandRequest &msg) override;
+  void on_button_command_request(const ButtonCommandRequest &msg) override;
 #endif
 #ifdef USE_LOCK
   bool send_lock_state(lock::Lock *a_lock);
-  void lock_command(const LockCommandRequest &msg) override;
+  void on_lock_command_request(const LockCommandRequest &msg) override;
 #endif
 #ifdef USE_VALVE
   bool send_valve_state(valve::Valve *valve);
-  void valve_command(const ValveCommandRequest &msg) override;
+  void on_valve_command_request(const ValveCommandRequest &msg) override;
 #endif
 #ifdef USE_MEDIA_PLAYER
   bool send_media_player_state(media_player::MediaPlayer *media_player);
-  void media_player_command(const MediaPlayerCommandRequest &msg) override;
+  void on_media_player_command_request(const MediaPlayerCommandRequest &msg) override;
 #endif
   bool try_send_log_message(int level, const char *tag, const char *line, size_t message_len);
 #ifdef USE_API_HOMEASSISTANT_SERVICES
@@ -126,18 +130,18 @@ class APIConnection final : public APIServerConnection {
 #endif  // USE_API_HOMEASSISTANT_ACTION_RESPONSES
 #endif  // USE_API_HOMEASSISTANT_SERVICES
 #ifdef USE_BLUETOOTH_PROXY
-  void subscribe_bluetooth_le_advertisements(const SubscribeBluetoothLEAdvertisementsRequest &msg) override;
-  void unsubscribe_bluetooth_le_advertisements(const UnsubscribeBluetoothLEAdvertisementsRequest &msg) override;
+  void on_subscribe_bluetooth_le_advertisements_request(const SubscribeBluetoothLEAdvertisementsRequest &msg) override;
+  void on_unsubscribe_bluetooth_le_advertisements_request() override;
 
-  void bluetooth_device_request(const BluetoothDeviceRequest &msg) override;
-  void bluetooth_gatt_read(const BluetoothGATTReadRequest &msg) override;
-  void bluetooth_gatt_write(const BluetoothGATTWriteRequest &msg) override;
-  void bluetooth_gatt_read_descriptor(const BluetoothGATTReadDescriptorRequest &msg) override;
-  void bluetooth_gatt_write_descriptor(const BluetoothGATTWriteDescriptorRequest &msg) override;
-  void bluetooth_gatt_get_services(const BluetoothGATTGetServicesRequest &msg) override;
-  void bluetooth_gatt_notify(const BluetoothGATTNotifyRequest &msg) override;
-  bool send_subscribe_bluetooth_connections_free_response(const SubscribeBluetoothConnectionsFreeRequest &msg) override;
-  void bluetooth_scanner_set_mode(const BluetoothScannerSetModeRequest &msg) override;
+  void on_bluetooth_device_request(const BluetoothDeviceRequest &msg) override;
+  void on_bluetooth_gatt_read_request(const BluetoothGATTReadRequest &msg) override;
+  void on_bluetooth_gatt_write_request(const BluetoothGATTWriteRequest &msg) override;
+  void on_bluetooth_gatt_read_descriptor_request(const BluetoothGATTReadDescriptorRequest &msg) override;
+  void on_bluetooth_gatt_write_descriptor_request(const BluetoothGATTWriteDescriptorRequest &msg) override;
+  void on_bluetooth_gatt_get_services_request(const BluetoothGATTGetServicesRequest &msg) override;
+  void on_bluetooth_gatt_notify_request(const BluetoothGATTNotifyRequest &msg) override;
+  void on_subscribe_bluetooth_connections_free_request() override;
+  void on_bluetooth_scanner_set_mode_request(const BluetoothScannerSetModeRequest &msg) override;
 
 #endif
 #ifdef USE_HOMEASSISTANT_TIME
@@ -148,24 +152,24 @@ class APIConnection final : public APIServerConnection {
 #endif
 
 #ifdef USE_VOICE_ASSISTANT
-  void subscribe_voice_assistant(const SubscribeVoiceAssistantRequest &msg) override;
+  void on_subscribe_voice_assistant_request(const SubscribeVoiceAssistantRequest &msg) override;
   void on_voice_assistant_response(const VoiceAssistantResponse &msg) override;
   void on_voice_assistant_event_response(const VoiceAssistantEventResponse &msg) override;
   void on_voice_assistant_audio(const VoiceAssistantAudio &msg) override;
   void on_voice_assistant_timer_event_response(const VoiceAssistantTimerEventResponse &msg) override;
   void on_voice_assistant_announce_request(const VoiceAssistantAnnounceRequest &msg) override;
-  bool send_voice_assistant_get_configuration_response(const VoiceAssistantConfigurationRequest &msg) override;
-  void voice_assistant_set_configuration(const VoiceAssistantSetConfiguration &msg) override;
+  void on_voice_assistant_configuration_request(const VoiceAssistantConfigurationRequest &msg) override;
+  void on_voice_assistant_set_configuration(const VoiceAssistantSetConfiguration &msg) override;
 #endif
 
 #ifdef USE_ZWAVE_PROXY
-  void zwave_proxy_frame(const ZWaveProxyFrame &msg) override;
-  void zwave_proxy_request(const ZWaveProxyRequest &msg) override;
+  void on_z_wave_proxy_frame(const ZWaveProxyFrame &msg) override;
+  void on_z_wave_proxy_request(const ZWaveProxyRequest &msg) override;
 #endif
 
 #ifdef USE_ALARM_CONTROL_PANEL
   bool send_alarm_control_panel_state(alarm_control_panel::AlarmControlPanel *a_alarm_control_panel);
-  void alarm_control_panel_command(const AlarmControlPanelCommandRequest &msg) override;
+  void on_alarm_control_panel_command_request(const AlarmControlPanelCommandRequest &msg) override;
 #endif
 
 #ifdef USE_WATER_HEATER
@@ -174,7 +178,7 @@ class APIConnection final : public APIServerConnection {
 #endif
 
 #ifdef USE_IR_RF
-  void infrared_rf_transmit_raw_timings(const InfraredRFTransmitRawTimingsRequest &msg) override;
+  void on_infrared_rf_transmit_raw_timings_request(const InfraredRFTransmitRawTimingsRequest &msg) override;
   void send_infrared_rf_receive_event(const InfraredRFReceiveEvent &msg);
 #endif
 
@@ -184,11 +188,11 @@ class APIConnection final : public APIServerConnection {
 
 #ifdef USE_UPDATE
   bool send_update_state(update::UpdateEntity *update);
-  void update_command(const UpdateCommandRequest &msg) override;
+  void on_update_command_request(const UpdateCommandRequest &msg) override;
 #endif
 
-  void on_disconnect_response(const DisconnectResponse &value) override;
-  void on_ping_response(const PingResponse &value) override {
+  void on_disconnect_response() override;
+  void on_ping_response() override {
     // we initiated ping
     this->flags_.sent_ping = false;
   }
@@ -198,12 +202,12 @@ class APIConnection final : public APIServerConnection {
 #ifdef USE_HOMEASSISTANT_TIME
   void on_get_time_response(const GetTimeResponse &value) override;
 #endif
-  bool send_hello_response(const HelloRequest &msg) override;
-  bool send_disconnect_response(const DisconnectRequest &msg) override;
-  bool send_ping_response(const PingRequest &msg) override;
-  bool send_device_info_response(const DeviceInfoRequest &msg) override;
-  void list_entities(const ListEntitiesRequest &msg) override { this->begin_iterator_(ActiveIterator::LIST_ENTITIES); }
-  void subscribe_states(const SubscribeStatesRequest &msg) override {
+  void on_hello_request(const HelloRequest &msg) override;
+  void on_disconnect_request() override;
+  void on_ping_request() override;
+  void on_device_info_request() override;
+  void on_list_entities_request() override { this->begin_iterator_(ActiveIterator::LIST_ENTITIES); }
+  void on_subscribe_states_request() override {
     this->flags_.state_subscription = true;
     // Start initial state iterator only if no iterator is active
     // If list_entities is running, we'll start initial_state when it completes
@@ -211,21 +215,19 @@ class APIConnection final : public APIServerConnection {
       this->begin_iterator_(ActiveIterator::INITIAL_STATE);
     }
   }
-  void subscribe_logs(const SubscribeLogsRequest &msg) override {
+  void on_subscribe_logs_request(const SubscribeLogsRequest &msg) override {
     this->flags_.log_subscription = msg.level;
     if (msg.dump_config)
       App.schedule_dump_config();
   }
 #ifdef USE_API_HOMEASSISTANT_SERVICES
-  void subscribe_homeassistant_services(const SubscribeHomeassistantServicesRequest &msg) override {
-    this->flags_.service_call_subscription = true;
-  }
+  void on_subscribe_homeassistant_services_request() override { this->flags_.service_call_subscription = true; }
 #endif
 #ifdef USE_API_HOMEASSISTANT_STATES
-  void subscribe_home_assistant_states(const SubscribeHomeAssistantStatesRequest &msg) override;
+  void on_subscribe_home_assistant_states_request() override;
 #endif
 #ifdef USE_API_USER_DEFINED_ACTIONS
-  void execute_service(const ExecuteServiceRequest &msg) override;
+  void on_execute_service_request(const ExecuteServiceRequest &msg) override;
 #ifdef USE_API_USER_DEFINED_ACTION_RESPONSES
   void send_execute_service_response(uint32_t call_id, bool success, StringRef error_message);
 #ifdef USE_API_USER_DEFINED_ACTION_RESPONSES_JSON
@@ -235,7 +237,7 @@ class APIConnection final : public APIServerConnection {
 #endif  // USE_API_USER_DEFINED_ACTION_RESPONSES
 #endif
 #ifdef USE_API_NOISE
-  bool send_noise_encryption_set_key_response(const NoiseEncryptionSetKeyRequest &msg) override;
+  void on_noise_encryption_set_key_request(const NoiseEncryptionSetKeyRequest &msg) override;
 #endif
 
   bool is_authenticated() override {
@@ -255,17 +257,7 @@ class APIConnection final : public APIServerConnection {
 
   void on_fatal_error() override;
   void on_no_setup_connection() override;
-  ProtoWriteBuffer create_buffer(uint32_t reserve_size) override {
-    // FIXME: ensure no recursive writes can happen
-
-    // Get header padding size - used for both reserve and insert
-    uint8_t header_padding = this->helper_->frame_header_padding();
-    // Get shared buffer from parent server
-    std::vector<uint8_t> &shared_buf = this->parent_->get_shared_buffer_ref();
-    this->prepare_first_message_buffer(shared_buf, header_padding,
-                                       reserve_size + header_padding + this->helper_->frame_footer_size());
-    return {&shared_buf};
-  }
+  bool send_message_impl(const ProtoMessage &msg, uint8_t message_type) override;
 
   void prepare_first_message_buffer(std::vector<uint8_t> &shared_buf, size_t header_padding, size_t total_size) {
     shared_buf.clear();
@@ -277,17 +269,41 @@ class APIConnection final : public APIServerConnection {
     shared_buf.resize(header_padding);
   }
 
+  // Convenience overload - computes frame overhead internally
+  void prepare_first_message_buffer(std::vector<uint8_t> &shared_buf, size_t payload_size) {
+    const uint8_t header_padding = this->helper_->frame_header_padding();
+    const uint8_t footer_size = this->helper_->frame_footer_size();
+    this->prepare_first_message_buffer(shared_buf, header_padding, payload_size + header_padding + footer_size);
+  }
+
   bool try_to_clear_buffer(bool log_out_of_space);
   bool send_buffer(ProtoWriteBuffer buffer, uint8_t message_type) override;
 
   const char *get_name() const { return this->helper_->get_client_name(); }
-  /// Get peer name (IP address) - cached at connection init time
-  const char *get_peername() const { return this->helper_->get_client_peername(); }
+  /// Get peer name (IP address) into caller-provided buffer, returns buf for convenience
+  const char *get_peername_to(std::span<char, socket::SOCKADDR_STR_LEN> buf) const {
+    return this->helper_->get_peername_to(buf);
+  }
 
  protected:
   // Helper function to handle authentication completion
   void complete_authentication_();
 
+  // Pattern B helpers: send response and return success/failure
+  bool send_hello_response_(const HelloRequest &msg);
+  bool send_disconnect_response_();
+  bool send_ping_response_();
+  bool send_device_info_response_();
+#ifdef USE_API_NOISE
+  bool send_noise_encryption_set_key_response_(const NoiseEncryptionSetKeyRequest &msg);
+#endif
+#ifdef USE_BLUETOOTH_PROXY
+  bool send_subscribe_bluetooth_connections_free_response_();
+#endif
+#ifdef USE_VOICE_ASSISTANT
+  bool send_voice_assistant_get_configuration_response_(const VoiceAssistantConfigurationRequest &msg);
+#endif
+
 #ifdef USE_CAMERA
   void try_send_camera_image_();
 #endif
@@ -298,21 +314,21 @@ class APIConnection final : public APIServerConnection {
 
   // Non-template helper to encode any ProtoMessage
   static uint16_t encode_message_to_buffer(ProtoMessage &msg, uint8_t message_type, APIConnection *conn,
-                                           uint32_t remaining_size, bool is_single);
+                                           uint32_t remaining_size);
 
   // Helper to fill entity state base and encode message
   static uint16_t fill_and_encode_entity_state(EntityBase *entity, StateResponseProtoMessage &msg, uint8_t message_type,
-                                               APIConnection *conn, uint32_t remaining_size, bool is_single) {
+                                               APIConnection *conn, uint32_t remaining_size) {
     msg.key = entity->get_object_id_hash();
 #ifdef USE_DEVICES
     msg.device_id = entity->get_device_id();
 #endif
-    return encode_message_to_buffer(msg, message_type, conn, remaining_size, is_single);
+    return encode_message_to_buffer(msg, message_type, conn, remaining_size);
   }
 
   // Helper to fill entity info base and encode message
   static uint16_t fill_and_encode_entity_info(EntityBase *entity, InfoResponseProtoMessage &msg, uint8_t message_type,
-                                              APIConnection *conn, uint32_t remaining_size, bool is_single) {
+                                              APIConnection *conn, uint32_t remaining_size) {
     // Set common fields that are shared by all entity types
     msg.key = entity->get_object_id_hash();
 
@@ -339,7 +355,7 @@ class APIConnection final : public APIServerConnection {
 #ifdef USE_DEVICES
     msg.device_id = entity->get_device_id();
 #endif
-    return encode_message_to_buffer(msg, message_type, conn, remaining_size, is_single);
+    return encode_message_to_buffer(msg, message_type, conn, remaining_size);
   }
 
 #ifdef USE_VOICE_ASSISTANT
@@ -354,157 +370,117 @@ class APIConnection final : public APIServerConnection {
     return this->client_supports_api_version(1, 14) ? MAX_INITIAL_PER_BATCH : MAX_INITIAL_PER_BATCH_LEGACY;
   }
 
-  // Helper method to process multiple entities from an iterator in a batch
-  template<typename Iterator> void process_iterator_batch_(Iterator &iterator) {
-    size_t initial_size = this->deferred_batch_.size();
-    size_t max_batch = this->get_max_batch_size_();
-    while (!iterator.completed() && (this->deferred_batch_.size() - initial_size) < max_batch) {
-      iterator.advance();
-    }
+  // Process active iterator (list_entities/initial_state) during connection setup.
+  // Extracted from loop() — only runs during initial handshake, NONE in steady state.
+  void __attribute__((noinline)) process_active_iterator_();
 
-    // If the batch is full, process it immediately
-    // Note: iterator.advance() already calls schedule_batch_() via schedule_message_()
-    if (this->deferred_batch_.size() >= max_batch) {
-      this->process_batch_();
-    }
-  }
+  // Helper method to process multiple entities from an iterator in a batch.
+  // Takes ComponentIterator base class reference to avoid duplicate template instantiations.
+  void process_iterator_batch_(ComponentIterator &iterator);
 
 #ifdef USE_BINARY_SENSOR
-  static uint16_t try_send_binary_sensor_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                               bool is_single);
-  static uint16_t try_send_binary_sensor_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                              bool is_single);
+  static uint16_t try_send_binary_sensor_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_binary_sensor_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_COVER
-  static uint16_t try_send_cover_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                       bool is_single);
-  static uint16_t try_send_cover_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
+  static uint16_t try_send_cover_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_cover_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_FAN
-  static uint16_t try_send_fan_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
-  static uint16_t try_send_fan_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
+  static uint16_t try_send_fan_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_fan_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_LIGHT
-  static uint16_t try_send_light_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                       bool is_single);
-  static uint16_t try_send_light_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
+  static uint16_t try_send_light_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_light_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_SENSOR
-  static uint16_t try_send_sensor_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                        bool is_single);
-  static uint16_t try_send_sensor_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                       bool is_single);
+  static uint16_t try_send_sensor_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_sensor_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_SWITCH
-  static uint16_t try_send_switch_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                        bool is_single);
-  static uint16_t try_send_switch_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                       bool is_single);
+  static uint16_t try_send_switch_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_switch_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_TEXT_SENSOR
-  static uint16_t try_send_text_sensor_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                             bool is_single);
-  static uint16_t try_send_text_sensor_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                            bool is_single);
+  static uint16_t try_send_text_sensor_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_text_sensor_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_CLIMATE
-  static uint16_t try_send_climate_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                         bool is_single);
-  static uint16_t try_send_climate_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                        bool is_single);
+  static uint16_t try_send_climate_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_climate_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_NUMBER
-  static uint16_t try_send_number_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                        bool is_single);
-  static uint16_t try_send_number_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                       bool is_single);
+  static uint16_t try_send_number_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_number_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_DATETIME_DATE
-  static uint16_t try_send_date_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
-  static uint16_t try_send_date_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
+  static uint16_t try_send_date_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_date_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_DATETIME_TIME
-  static uint16_t try_send_time_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
-  static uint16_t try_send_time_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
+  static uint16_t try_send_time_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_time_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_DATETIME_DATETIME
-  static uint16_t try_send_datetime_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                          bool is_single);
-  static uint16_t try_send_datetime_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                         bool is_single);
+  static uint16_t try_send_datetime_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_datetime_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_TEXT
-  static uint16_t try_send_text_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
-  static uint16_t try_send_text_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
+  static uint16_t try_send_text_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_text_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_SELECT
-  static uint16_t try_send_select_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                        bool is_single);
-  static uint16_t try_send_select_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                       bool is_single);
+  static uint16_t try_send_select_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_select_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_BUTTON
-  static uint16_t try_send_button_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                       bool is_single);
+  static uint16_t try_send_button_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_LOCK
-  static uint16_t try_send_lock_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
-  static uint16_t try_send_lock_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
+  static uint16_t try_send_lock_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_lock_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_VALVE
-  static uint16_t try_send_valve_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                       bool is_single);
-  static uint16_t try_send_valve_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
+  static uint16_t try_send_valve_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_valve_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_MEDIA_PLAYER
-  static uint16_t try_send_media_player_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                              bool is_single);
-  static uint16_t try_send_media_player_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                             bool is_single);
+  static uint16_t try_send_media_player_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_media_player_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_ALARM_CONTROL_PANEL
-  static uint16_t try_send_alarm_control_panel_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                                     bool is_single);
-  static uint16_t try_send_alarm_control_panel_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                                    bool is_single);
+  static uint16_t try_send_alarm_control_panel_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_alarm_control_panel_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_WATER_HEATER
-  static uint16_t try_send_water_heater_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                              bool is_single);
-  static uint16_t try_send_water_heater_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                             bool is_single);
+  static uint16_t try_send_water_heater_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_water_heater_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_INFRARED
-  static uint16_t try_send_infrared_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                         bool is_single);
+  static uint16_t try_send_infrared_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_EVENT
   static uint16_t try_send_event_response(event::Event *event, StringRef event_type, APIConnection *conn,
-                                          uint32_t remaining_size, bool is_single);
-  static uint16_t try_send_event_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single);
+                                          uint32_t remaining_size);
+  static uint16_t try_send_event_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_UPDATE
-  static uint16_t try_send_update_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                        bool is_single);
-  static uint16_t try_send_update_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                       bool is_single);
+  static uint16_t try_send_update_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
+  static uint16_t try_send_update_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 #ifdef USE_CAMERA
-  static uint16_t try_send_camera_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                       bool is_single);
+  static uint16_t try_send_camera_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 #endif
 
   // Method for ListEntitiesDone batching
-  static uint16_t try_send_list_info_done(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                          bool is_single);
+  static uint16_t try_send_list_info_done(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 
   // Method for DisconnectRequest batching
-  static uint16_t try_send_disconnect_request(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                              bool is_single);
+  static uint16_t try_send_disconnect_request(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 
   // Batch message method for ping requests
-  static uint16_t try_send_ping_request(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
-                                        bool is_single);
+  static uint16_t try_send_ping_request(EntityBase *entity, APIConnection *conn, uint32_t remaining_size);
 
   // === Optimal member ordering for 32-bit systems ===
 
@@ -539,7 +515,7 @@ class APIConnection final : public APIServerConnection {
 #endif
 
   // Function pointer type for message encoding
-  using MessageCreatorPtr = uint16_t (*)(EntityBase *, APIConnection *, uint32_t remaining_size, bool is_single);
+  using MessageCreatorPtr = uint16_t (*)(EntityBase *, APIConnection *, uint32_t remaining_size);
 
   // Generic batching mechanism for both state updates and entity info
   struct DeferredBatch {
@@ -565,6 +541,8 @@ class APIConnection final : public APIServerConnection {
                   uint8_t aux_data_index = AUX_DATA_UNUSED);
     // Add item to the front of the batch (for high priority messages like ping)
     void add_item_front(EntityBase *entity, uint8_t message_type, uint8_t estimated_size);
+    // Single push_back site to avoid duplicate _M_realloc_insert instantiation
+    void push_item(const BatchItem &item);
 
     // Clear all items
     void clear() {
@@ -572,8 +550,8 @@ class APIConnection final : public APIServerConnection {
       batch_start_time = 0;
     }
 
-    // Remove processed items from the front
-    void remove_front(size_t count) { items.erase(items.begin(), items.begin() + count); }
+    // Remove processed items from the front — noinline to keep memmove out of warm callers
+    void remove_front(size_t count) __attribute__((noinline)) { items.erase(items.begin(), items.begin() + count); }
 
     bool empty() const { return items.empty(); }
     size_t size() const { return items.size(); }
@@ -645,6 +623,8 @@ class APIConnection final : public APIServerConnection {
 
   bool schedule_batch_();
   void process_batch_();
+  void process_batch_multi_(std::vector<uint8_t> &shared_buf, size_t num_items, uint8_t header_padding,
+                            uint8_t footer_size) __attribute__((noinline));
   void clear_batch_() {
     this->deferred_batch_.clear();
     this->flags_.batch_scheduled = false;
@@ -652,7 +632,7 @@ class APIConnection final : public APIServerConnection {
 
   // Dispatch message encoding based on message_type - replaces function pointer storage
   // Switch assigns pointer, single call site for smaller code size
-  uint16_t dispatch_message_(const DeferredBatch::BatchItem &item, uint32_t remaining_size, bool is_single);
+  uint16_t dispatch_message_(const DeferredBatch::BatchItem &item, uint32_t remaining_size, bool batch_first);
 
 #ifdef HAS_PROTO_MESSAGE_DUMP
   void log_batch_item_(const DeferredBatch::BatchItem &item) {
@@ -684,19 +664,7 @@ class APIConnection final : public APIServerConnection {
   // Tries immediate send if should_send_immediately_() returns true and buffer has space
   // Falls back to batching if immediate send fails or isn't applicable
   bool send_message_smart_(EntityBase *entity, uint8_t message_type, uint8_t estimated_size,
-                           uint8_t aux_data_index = DeferredBatch::AUX_DATA_UNUSED) {
-    if (this->should_send_immediately_(message_type) && this->helper_->can_write_without_blocking()) {
-      DeferredBatch::BatchItem item{entity, message_type, estimated_size, aux_data_index};
-      if (this->dispatch_message_(item, MAX_BATCH_PACKET_SIZE, true) &&
-          this->send_buffer(ProtoWriteBuffer{&this->parent_->get_shared_buffer_ref()}, message_type)) {
-#ifdef HAS_PROTO_MESSAGE_DUMP
-        this->log_batch_item_(item);
-#endif
-        return true;
-      }
-    }
-    return this->schedule_message_(entity, message_type, estimated_size, aux_data_index);
-  }
+                           uint8_t aux_data_index = DeferredBatch::AUX_DATA_UNUSED);
 
   // Helper function to schedule a deferred message with known message type
   bool schedule_message_(EntityBase *entity, uint8_t message_type, uint8_t estimated_size,

esphome/components/api/api_frame_helper.cpp

@@ -16,7 +16,12 @@ static const char *const TAG = "api.frame_helper";
 static constexpr size_t API_MAX_LOG_BYTES = 168;
 
 #if ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERY_VERBOSE
-#define HELPER_LOG(msg, ...) ESP_LOGVV(TAG, "%s (%s): " msg, this->client_name_, this->client_peername_, ##__VA_ARGS__)
+#define HELPER_LOG(msg, ...) \
+  do { \
+    char peername_buf[socket::SOCKADDR_STR_LEN]; \
+    this->get_peername_to(peername_buf); \
+    ESP_LOGVV(TAG, "%s (%s): " msg, this->client_name_, peername_buf, ##__VA_ARGS__); \
+  } while (0)
 #else
 #define HELPER_LOG(msg, ...) ((void) 0)
 #endif
@@ -240,13 +245,20 @@ APIError APIFrameHelper::try_send_tx_buf_() {
   return APIError::OK;  // All buffers sent successfully
 }
 
+const char *APIFrameHelper::get_peername_to(std::span<char, socket::SOCKADDR_STR_LEN> buf) const {
+  if (this->socket_) {
+    this->socket_->getpeername_to(buf);
+  } else {
+    buf[0] = '\0';
+  }
+  return buf.data();
+}
+
 APIError APIFrameHelper::init_common_() {
   if (state_ != State::INITIALIZE || this->socket_ == nullptr) {
     HELPER_LOG("Bad state for init %d", (int) state_);
     return APIError::BAD_STATE;
   }
-  // Cache peername now while socket is valid - needed for error logging after socket failure
-  this->socket_->getpeername_to(this->client_peername_);
   int err = this->socket_->setblocking(false);
   if (err != 0) {
     state_ = State::FAILED;

esphome/components/api/api_frame_helper.h

@@ -90,8 +90,9 @@ class APIFrameHelper {
 
   // Get client name (null-terminated)
   const char *get_client_name() const { return this->client_name_; }
-  // Get client peername/IP (null-terminated, cached at init time for availability after socket failure)
-  const char *get_client_peername() const { return this->client_peername_; }
+  // Get client peername/IP into caller-provided buffer (fetches on-demand from socket)
+  // Returns pointer to buf for convenience in printf-style calls
+  const char *get_peername_to(std::span<char, socket::SOCKADDR_STR_LEN> buf) const;
   // Set client name from buffer with length (truncates if needed)
   void set_client_name(const char *name, size_t len) {
     size_t copy_len = std::min(len, sizeof(this->client_name_) - 1);
@@ -105,6 +106,8 @@ class APIFrameHelper {
   bool can_write_without_blocking() { return this->state_ == State::DATA && this->tx_buf_count_ == 0; }
   int getpeername(struct sockaddr *addr, socklen_t *addrlen) { return socket_->getpeername(addr, addrlen); }
   APIError close() {
+    if (state_ == State::CLOSED)
+      return APIError::OK;  // Already closed
     state_ = State::CLOSED;
     int err = this->socket_->close();
     if (err == -1)
@@ -231,8 +234,6 @@ class APIFrameHelper {
 
   // Client name buffer - stores name from Hello message or initial peername
   char client_name_[CLIENT_INFO_NAME_MAX_LEN]{};
-  // Cached peername/IP address - captured at init time for availability after socket failure
-  char client_peername_[socket::SOCKADDR_STR_LEN]{};
 
   // Group smaller types together
   uint16_t rx_buf_len_ = 0;

esphome/components/api/api_frame_helper_noise.cpp

@@ -19,7 +19,7 @@ namespace esphome::api {
 
 static const char *const TAG = "api.noise";
 #ifdef USE_ESP8266
-static const char PROLOGUE_INIT[] PROGMEM = "NoiseAPIInit";
+static constexpr char PROLOGUE_INIT[] PROGMEM = "NoiseAPIInit";
 #else
 static const char *const PROLOGUE_INIT = "NoiseAPIInit";
 #endif
@@ -29,7 +29,12 @@ static constexpr size_t PROLOGUE_INIT_LEN = 12;  // strlen("NoiseAPIInit")
 static constexpr size_t API_MAX_LOG_BYTES = 168;
 
 #if ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERY_VERBOSE
-#define HELPER_LOG(msg, ...) ESP_LOGVV(TAG, "%s (%s): " msg, this->client_name_, this->client_peername_, ##__VA_ARGS__)
+#define HELPER_LOG(msg, ...) \
+  do { \
+    char peername_buf[socket::SOCKADDR_STR_LEN]; \
+    this->get_peername_to(peername_buf); \
+    ESP_LOGVV(TAG, "%s (%s): " msg, this->client_name_, peername_buf, ##__VA_ARGS__); \
+  } while (0)
 #else
 #define HELPER_LOG(msg, ...) ((void) 0)
 #endif
@@ -133,10 +138,12 @@ APIError APINoiseFrameHelper::handle_noise_error_(int err, const LogString *func
 
 /// Run through handshake messages (if in that phase)
 APIError APINoiseFrameHelper::loop() {
-  // During handshake phase, process as many actions as possible until we can't progress
-  // socket_->ready() stays true until next main loop, but state_action() will return
-  // WOULD_BLOCK when no more data is available to read
-  while (state_ != State::DATA && this->socket_->ready()) {
+  // Cache ready() outside the loop. On ESP8266 LWIP raw TCP, ready() returns false once
+  // the rx buffer is consumed. Re-checking each iteration would block handshake writes
+  // that must follow reads, deadlocking the handshake. state_action() will return
+  // WOULD_BLOCK when no more data is available to read.
+  bool socket_ready = this->socket_->ready();
+  while (state_ != State::DATA && socket_ready) {
     APIError err = state_action_();
     if (err == APIError::WOULD_BLOCK) {
       break;
@@ -467,7 +474,7 @@ APIError APINoiseFrameHelper::write_protobuf_messages(ProtoWriteBuffer buffer, s
     // buf_start[1], buf_start[2] to be set after encryption
 
     // Write message header (to be encrypted)
-    const uint8_t msg_offset = 3;
+    constexpr uint8_t msg_offset = 3;
     buf_start[msg_offset] = static_cast<uint8_t>(msg.message_type >> 8);      // type high byte
     buf_start[msg_offset + 1] = static_cast<uint8_t>(msg.message_type);       // type low byte
     buf_start[msg_offset + 2] = static_cast<uint8_t>(msg.payload_size >> 8);  // data_len high byte

esphome/components/api/api_frame_helper_plaintext.cpp

@@ -21,7 +21,12 @@ static const char *const TAG = "api.plaintext";
 static constexpr size_t API_MAX_LOG_BYTES = 168;
 
 #if ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERY_VERBOSE
-#define HELPER_LOG(msg, ...) ESP_LOGVV(TAG, "%s (%s): " msg, this->client_name_, this->client_peername_, ##__VA_ARGS__)
+#define HELPER_LOG(msg, ...) \
+  do { \
+    char peername_buf[socket::SOCKADDR_STR_LEN]; \
+    this->get_peername_to(peername_buf); \
+    ESP_LOGVV(TAG, "%s (%s): " msg, this->client_name_, peername_buf, ##__VA_ARGS__); \
+  } while (0)
 #else
 #define HELPER_LOG(msg, ...) ((void) 0)
 #endif
@@ -290,9 +295,8 @@ APIError APIPlaintextFrameHelper::write_protobuf_messages(ProtoWriteBuffer buffe
     buf_start[header_offset] = 0x00;  // indicator
 
     // Encode varints directly into buffer
-    ProtoVarInt(msg.payload_size).encode_to_buffer_unchecked(buf_start + header_offset + 1, size_varint_len);
-    ProtoVarInt(msg.message_type)
-        .encode_to_buffer_unchecked(buf_start + header_offset + 1 + size_varint_len, type_varint_len);
+    encode_varint_to_buffer(msg.payload_size, buf_start + header_offset + 1);
+    encode_varint_to_buffer(msg.message_type, buf_start + header_offset + 1 + size_varint_len);
 
     // Add iovec for this message (header + payload)
     size_t msg_len = static_cast<size_t>(total_header_len + msg.payload_size);

esphome/components/api/api_pb2.cpp

@@ -31,7 +31,7 @@ bool HelloRequest::decode_length(uint32_t field_id, ProtoLengthDelimited value)
   }
   return true;
 }
-void HelloResponse::encode(ProtoWriteBuffer buffer) const {
+void HelloResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint32(1, this->api_version_major);
   buffer.encode_uint32(2, this->api_version_minor);
   buffer.encode_string(3, this->server_info);
@@ -44,7 +44,7 @@ void HelloResponse::calculate_size(ProtoSize &size) const {
   size.add_length(1, this->name.size());
 }
 #ifdef USE_AREAS
-void AreaInfo::encode(ProtoWriteBuffer buffer) const {
+void AreaInfo::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint32(1, this->area_id);
   buffer.encode_string(2, this->name);
 }
@@ -54,7 +54,7 @@ void AreaInfo::calculate_size(ProtoSize &size) const {
 }
 #endif
 #ifdef USE_DEVICES
-void DeviceInfo::encode(ProtoWriteBuffer buffer) const {
+void DeviceInfo::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint32(1, this->device_id);
   buffer.encode_string(2, this->name);
   buffer.encode_uint32(3, this->area_id);
@@ -65,7 +65,7 @@ void DeviceInfo::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->area_id);
 }
 #endif
-void DeviceInfoResponse::encode(ProtoWriteBuffer buffer) const {
+void DeviceInfoResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(2, this->name);
   buffer.encode_string(3, this->mac_address);
   buffer.encode_string(4, this->esphome_version);
@@ -111,7 +111,7 @@ void DeviceInfoResponse::encode(ProtoWriteBuffer buffer) const {
   }
 #endif
 #ifdef USE_AREAS
-  buffer.encode_message(22, this->area);
+  buffer.encode_message(22, this->area, false);
 #endif
 #ifdef USE_ZWAVE_PROXY
   buffer.encode_uint32(23, this->zwave_proxy_feature_flags);
@@ -176,7 +176,7 @@ void DeviceInfoResponse::calculate_size(ProtoSize &size) const {
 #endif
 }
 #ifdef USE_BINARY_SENSOR
-void ListEntitiesBinarySensorResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesBinarySensorResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -206,7 +206,7 @@ void ListEntitiesBinarySensorResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void BinarySensorStateResponse::encode(ProtoWriteBuffer buffer) const {
+void BinarySensorStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_bool(2, this->state);
   buffer.encode_bool(3, this->missing_state);
@@ -224,7 +224,7 @@ void BinarySensorStateResponse::calculate_size(ProtoSize &size) const {
 }
 #endif
 #ifdef USE_COVER
-void ListEntitiesCoverResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesCoverResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -260,7 +260,7 @@ void ListEntitiesCoverResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void CoverStateResponse::encode(ProtoWriteBuffer buffer) const {
+void CoverStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_float(3, this->position);
   buffer.encode_float(4, this->tilt);
@@ -317,7 +317,7 @@ bool CoverCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_FAN
-void ListEntitiesFanResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesFanResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -359,7 +359,7 @@ void ListEntitiesFanResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void FanStateResponse::encode(ProtoWriteBuffer buffer) const {
+void FanStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_bool(2, this->state);
   buffer.encode_bool(3, this->oscillating);
@@ -443,7 +443,7 @@ bool FanCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_LIGHT
-void ListEntitiesLightResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesLightResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -489,7 +489,7 @@ void ListEntitiesLightResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(2, this->device_id);
 #endif
 }
-void LightStateResponse::encode(ProtoWriteBuffer buffer) const {
+void LightStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_bool(2, this->state);
   buffer.encode_float(3, this->brightness);
@@ -635,7 +635,7 @@ bool LightCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_SENSOR
-void ListEntitiesSensorResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesSensorResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -671,7 +671,7 @@ void ListEntitiesSensorResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void SensorStateResponse::encode(ProtoWriteBuffer buffer) const {
+void SensorStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_float(2, this->state);
   buffer.encode_bool(3, this->missing_state);
@@ -689,7 +689,7 @@ void SensorStateResponse::calculate_size(ProtoSize &size) const {
 }
 #endif
 #ifdef USE_SWITCH
-void ListEntitiesSwitchResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesSwitchResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -719,7 +719,7 @@ void ListEntitiesSwitchResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void SwitchStateResponse::encode(ProtoWriteBuffer buffer) const {
+void SwitchStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_bool(2, this->state);
 #ifdef USE_DEVICES
@@ -760,7 +760,7 @@ bool SwitchCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_TEXT_SENSOR
-void ListEntitiesTextSensorResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesTextSensorResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -788,7 +788,7 @@ void ListEntitiesTextSensorResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void TextSensorStateResponse::encode(ProtoWriteBuffer buffer) const {
+void TextSensorStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_string(2, this->state);
   buffer.encode_bool(3, this->missing_state);
@@ -818,7 +818,7 @@ bool SubscribeLogsRequest::decode_varint(uint32_t field_id, ProtoVarInt value) {
   }
   return true;
 }
-void SubscribeLogsResponse::encode(ProtoWriteBuffer buffer) const {
+void SubscribeLogsResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint32(1, static_cast<uint32_t>(this->level));
   buffer.encode_bytes(3, this->message_ptr_, this->message_len_);
 }
@@ -839,11 +839,11 @@ bool NoiseEncryptionSetKeyRequest::decode_length(uint32_t field_id, ProtoLengthD
   }
   return true;
 }
-void NoiseEncryptionSetKeyResponse::encode(ProtoWriteBuffer buffer) const { buffer.encode_bool(1, this->success); }
+void NoiseEncryptionSetKeyResponse::encode(ProtoWriteBuffer &buffer) const { buffer.encode_bool(1, this->success); }
 void NoiseEncryptionSetKeyResponse::calculate_size(ProtoSize &size) const { size.add_bool(1, this->success); }
 #endif
 #ifdef USE_API_HOMEASSISTANT_SERVICES
-void HomeassistantServiceMap::encode(ProtoWriteBuffer buffer) const {
+void HomeassistantServiceMap::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->key);
   buffer.encode_string(2, this->value);
 }
@@ -851,7 +851,7 @@ void HomeassistantServiceMap::calculate_size(ProtoSize &size) const {
   size.add_length(1, this->key.size());
   size.add_length(1, this->value.size());
 }
-void HomeassistantActionRequest::encode(ProtoWriteBuffer buffer) const {
+void HomeassistantActionRequest::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->service);
   for (auto &it : this->data) {
     buffer.encode_message(2, it);
@@ -924,7 +924,7 @@ bool HomeassistantActionResponse::decode_length(uint32_t field_id, ProtoLengthDe
 }
 #endif
 #ifdef USE_API_HOMEASSISTANT_STATES
-void SubscribeHomeAssistantStateResponse::encode(ProtoWriteBuffer buffer) const {
+void SubscribeHomeAssistantStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->entity_id);
   buffer.encode_string(2, this->attribute);
   buffer.encode_bool(3, this->once);
@@ -976,7 +976,7 @@ bool GetTimeResponse::decode_32bit(uint32_t field_id, Proto32Bit value) {
   return true;
 }
 #ifdef USE_API_USER_DEFINED_ACTIONS
-void ListEntitiesServicesArgument::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesServicesArgument::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->name);
   buffer.encode_uint32(2, static_cast<uint32_t>(this->type));
 }
@@ -984,7 +984,7 @@ void ListEntitiesServicesArgument::calculate_size(ProtoSize &size) const {
   size.add_length(1, this->name.size());
   size.add_uint32(1, static_cast<uint32_t>(this->type));
 }
-void ListEntitiesServicesResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesServicesResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->name);
   buffer.encode_fixed32(2, this->key);
   for (auto &it : this->args) {
@@ -1103,7 +1103,7 @@ void ExecuteServiceRequest::decode(const uint8_t *buffer, size_t length) {
 }
 #endif
 #ifdef USE_API_USER_DEFINED_ACTION_RESPONSES
-void ExecuteServiceResponse::encode(ProtoWriteBuffer buffer) const {
+void ExecuteServiceResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint32(1, this->call_id);
   buffer.encode_bool(2, this->success);
   buffer.encode_string(3, this->error_message);
@@ -1121,7 +1121,7 @@ void ExecuteServiceResponse::calculate_size(ProtoSize &size) const {
 }
 #endif
 #ifdef USE_CAMERA
-void ListEntitiesCameraResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesCameraResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -1147,7 +1147,7 @@ void ListEntitiesCameraResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void CameraImageResponse::encode(ProtoWriteBuffer buffer) const {
+void CameraImageResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_bytes(2, this->data_ptr_, this->data_len_);
   buffer.encode_bool(3, this->done);
@@ -1178,7 +1178,7 @@ bool CameraImageRequest::decode_varint(uint32_t field_id, ProtoVarInt value) {
 }
 #endif
 #ifdef USE_CLIMATE
-void ListEntitiesClimateResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesClimateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -1276,7 +1276,7 @@ void ListEntitiesClimateResponse::calculate_size(ProtoSize &size) const {
 #endif
   size.add_uint32(2, this->feature_flags);
 }
-void ClimateStateResponse::encode(ProtoWriteBuffer buffer) const {
+void ClimateStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_uint32(2, static_cast<uint32_t>(this->mode));
   buffer.encode_float(3, this->current_temperature);
@@ -1407,7 +1407,7 @@ bool ClimateCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_WATER_HEATER
-void ListEntitiesWaterHeaterResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesWaterHeaterResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -1449,7 +1449,7 @@ void ListEntitiesWaterHeaterResponse::calculate_size(ProtoSize &size) const {
   }
   size.add_uint32(1, this->supported_features);
 }
-void WaterHeaterStateResponse::encode(ProtoWriteBuffer buffer) const {
+void WaterHeaterStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_float(2, this->current_temperature);
   buffer.encode_float(3, this->target_temperature);
@@ -1515,7 +1515,7 @@ bool WaterHeaterCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value
 }
 #endif
 #ifdef USE_NUMBER
-void ListEntitiesNumberResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesNumberResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -1553,7 +1553,7 @@ void ListEntitiesNumberResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void NumberStateResponse::encode(ProtoWriteBuffer buffer) const {
+void NumberStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_float(2, this->state);
   buffer.encode_bool(3, this->missing_state);
@@ -1596,7 +1596,7 @@ bool NumberCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_SELECT
-void ListEntitiesSelectResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesSelectResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -1630,7 +1630,7 @@ void ListEntitiesSelectResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void SelectStateResponse::encode(ProtoWriteBuffer buffer) const {
+void SelectStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_string(2, this->state);
   buffer.encode_bool(3, this->missing_state);
@@ -1681,7 +1681,7 @@ bool SelectCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_SIREN
-void ListEntitiesSirenResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesSirenResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -1719,7 +1719,7 @@ void ListEntitiesSirenResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void SirenStateResponse::encode(ProtoWriteBuffer buffer) const {
+void SirenStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_bool(2, this->state);
 #ifdef USE_DEVICES
@@ -1789,7 +1789,7 @@ bool SirenCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_LOCK
-void ListEntitiesLockResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesLockResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -1823,7 +1823,7 @@ void ListEntitiesLockResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void LockStateResponse::encode(ProtoWriteBuffer buffer) const {
+void LockStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_uint32(2, static_cast<uint32_t>(this->state));
 #ifdef USE_DEVICES
@@ -1878,7 +1878,7 @@ bool LockCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_BUTTON
-void ListEntitiesButtonResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesButtonResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -1930,7 +1930,7 @@ bool ButtonCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_MEDIA_PLAYER
-void MediaPlayerSupportedFormat::encode(ProtoWriteBuffer buffer) const {
+void MediaPlayerSupportedFormat::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->format);
   buffer.encode_uint32(2, this->sample_rate);
   buffer.encode_uint32(3, this->num_channels);
@@ -1944,7 +1944,7 @@ void MediaPlayerSupportedFormat::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, static_cast<uint32_t>(this->purpose));
   size.add_uint32(1, this->sample_bytes);
 }
-void ListEntitiesMediaPlayerResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesMediaPlayerResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -1978,7 +1978,7 @@ void ListEntitiesMediaPlayerResponse::calculate_size(ProtoSize &size) const {
 #endif
   size.add_uint32(1, this->feature_flags);
 }
-void MediaPlayerStateResponse::encode(ProtoWriteBuffer buffer) const {
+void MediaPlayerStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_uint32(2, static_cast<uint32_t>(this->state));
   buffer.encode_float(3, this->volume);
@@ -2062,7 +2062,7 @@ bool SubscribeBluetoothLEAdvertisementsRequest::decode_varint(uint32_t field_id,
   }
   return true;
 }
-void BluetoothLERawAdvertisement::encode(ProtoWriteBuffer buffer) const {
+void BluetoothLERawAdvertisement::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
   buffer.encode_sint32(2, this->rssi);
   buffer.encode_uint32(3, this->address_type);
@@ -2074,7 +2074,7 @@ void BluetoothLERawAdvertisement::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->address_type);
   size.add_length(1, this->data_len);
 }
-void BluetoothLERawAdvertisementsResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothLERawAdvertisementsResponse::encode(ProtoWriteBuffer &buffer) const {
   for (uint16_t i = 0; i < this->advertisements_len; i++) {
     buffer.encode_message(1, this->advertisements[i]);
   }
@@ -2103,7 +2103,7 @@ bool BluetoothDeviceRequest::decode_varint(uint32_t field_id, ProtoVarInt value)
   }
   return true;
 }
-void BluetoothDeviceConnectionResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothDeviceConnectionResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
   buffer.encode_bool(2, this->connected);
   buffer.encode_uint32(3, this->mtu);
@@ -2125,7 +2125,7 @@ bool BluetoothGATTGetServicesRequest::decode_varint(uint32_t field_id, ProtoVarI
   }
   return true;
 }
-void BluetoothGATTDescriptor::encode(ProtoWriteBuffer buffer) const {
+void BluetoothGATTDescriptor::encode(ProtoWriteBuffer &buffer) const {
   if (this->uuid[0] != 0 || this->uuid[1] != 0) {
     buffer.encode_uint64(1, this->uuid[0], true);
     buffer.encode_uint64(1, this->uuid[1], true);
@@ -2141,7 +2141,7 @@ void BluetoothGATTDescriptor::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->handle);
   size.add_uint32(1, this->short_uuid);
 }
-void BluetoothGATTCharacteristic::encode(ProtoWriteBuffer buffer) const {
+void BluetoothGATTCharacteristic::encode(ProtoWriteBuffer &buffer) const {
   if (this->uuid[0] != 0 || this->uuid[1] != 0) {
     buffer.encode_uint64(1, this->uuid[0], true);
     buffer.encode_uint64(1, this->uuid[1], true);
@@ -2163,7 +2163,7 @@ void BluetoothGATTCharacteristic::calculate_size(ProtoSize &size) const {
   size.add_repeated_message(1, this->descriptors);
   size.add_uint32(1, this->short_uuid);
 }
-void BluetoothGATTService::encode(ProtoWriteBuffer buffer) const {
+void BluetoothGATTService::encode(ProtoWriteBuffer &buffer) const {
   if (this->uuid[0] != 0 || this->uuid[1] != 0) {
     buffer.encode_uint64(1, this->uuid[0], true);
     buffer.encode_uint64(1, this->uuid[1], true);
@@ -2183,7 +2183,7 @@ void BluetoothGATTService::calculate_size(ProtoSize &size) const {
   size.add_repeated_message(1, this->characteristics);
   size.add_uint32(1, this->short_uuid);
 }
-void BluetoothGATTGetServicesResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothGATTGetServicesResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
   for (auto &it : this->services) {
     buffer.encode_message(2, it);
@@ -2193,7 +2193,7 @@ void BluetoothGATTGetServicesResponse::calculate_size(ProtoSize &size) const {
   size.add_uint64(1, this->address);
   size.add_repeated_message(1, this->services);
 }
-void BluetoothGATTGetServicesDoneResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothGATTGetServicesDoneResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
 }
 void BluetoothGATTGetServicesDoneResponse::calculate_size(ProtoSize &size) const { size.add_uint64(1, this->address); }
@@ -2210,7 +2210,7 @@ bool BluetoothGATTReadRequest::decode_varint(uint32_t field_id, ProtoVarInt valu
   }
   return true;
 }
-void BluetoothGATTReadResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothGATTReadResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
   buffer.encode_uint32(2, this->handle);
   buffer.encode_bytes(3, this->data_ptr_, this->data_len_);
@@ -2302,7 +2302,7 @@ bool BluetoothGATTNotifyRequest::decode_varint(uint32_t field_id, ProtoVarInt va
   }
   return true;
 }
-void BluetoothGATTNotifyDataResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothGATTNotifyDataResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
   buffer.encode_uint32(2, this->handle);
   buffer.encode_bytes(3, this->data_ptr_, this->data_len_);
@@ -2312,7 +2312,7 @@ void BluetoothGATTNotifyDataResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->handle);
   size.add_length(1, this->data_len_);
 }
-void BluetoothConnectionsFreeResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothConnectionsFreeResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint32(1, this->free);
   buffer.encode_uint32(2, this->limit);
   for (const auto &it : this->allocated) {
@@ -2330,7 +2330,7 @@ void BluetoothConnectionsFreeResponse::calculate_size(ProtoSize &size) const {
     }
   }
 }
-void BluetoothGATTErrorResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothGATTErrorResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
   buffer.encode_uint32(2, this->handle);
   buffer.encode_int32(3, this->error);
@@ -2340,7 +2340,7 @@ void BluetoothGATTErrorResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->handle);
   size.add_int32(1, this->error);
 }
-void BluetoothGATTWriteResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothGATTWriteResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
   buffer.encode_uint32(2, this->handle);
 }
@@ -2348,7 +2348,7 @@ void BluetoothGATTWriteResponse::calculate_size(ProtoSize &size) const {
   size.add_uint64(1, this->address);
   size.add_uint32(1, this->handle);
 }
-void BluetoothGATTNotifyResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothGATTNotifyResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
   buffer.encode_uint32(2, this->handle);
 }
@@ -2356,7 +2356,7 @@ void BluetoothGATTNotifyResponse::calculate_size(ProtoSize &size) const {
   size.add_uint64(1, this->address);
   size.add_uint32(1, this->handle);
 }
-void BluetoothDevicePairingResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothDevicePairingResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
   buffer.encode_bool(2, this->paired);
   buffer.encode_int32(3, this->error);
@@ -2366,7 +2366,7 @@ void BluetoothDevicePairingResponse::calculate_size(ProtoSize &size) const {
   size.add_bool(1, this->paired);
   size.add_int32(1, this->error);
 }
-void BluetoothDeviceUnpairingResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothDeviceUnpairingResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
   buffer.encode_bool(2, this->success);
   buffer.encode_int32(3, this->error);
@@ -2376,7 +2376,7 @@ void BluetoothDeviceUnpairingResponse::calculate_size(ProtoSize &size) const {
   size.add_bool(1, this->success);
   size.add_int32(1, this->error);
 }
-void BluetoothDeviceClearCacheResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothDeviceClearCacheResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint64(1, this->address);
   buffer.encode_bool(2, this->success);
   buffer.encode_int32(3, this->error);
@@ -2386,7 +2386,7 @@ void BluetoothDeviceClearCacheResponse::calculate_size(ProtoSize &size) const {
   size.add_bool(1, this->success);
   size.add_int32(1, this->error);
 }
-void BluetoothScannerStateResponse::encode(ProtoWriteBuffer buffer) const {
+void BluetoothScannerStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint32(1, static_cast<uint32_t>(this->state));
   buffer.encode_uint32(2, static_cast<uint32_t>(this->mode));
   buffer.encode_uint32(3, static_cast<uint32_t>(this->configured_mode));
@@ -2421,7 +2421,7 @@ bool SubscribeVoiceAssistantRequest::decode_varint(uint32_t field_id, ProtoVarIn
   }
   return true;
 }
-void VoiceAssistantAudioSettings::encode(ProtoWriteBuffer buffer) const {
+void VoiceAssistantAudioSettings::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint32(1, this->noise_suppression_level);
   buffer.encode_uint32(2, this->auto_gain);
   buffer.encode_float(3, this->volume_multiplier);
@@ -2431,11 +2431,11 @@ void VoiceAssistantAudioSettings::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->auto_gain);
   size.add_float(1, this->volume_multiplier);
 }
-void VoiceAssistantRequest::encode(ProtoWriteBuffer buffer) const {
+void VoiceAssistantRequest::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_bool(1, this->start);
   buffer.encode_string(2, this->conversation_id);
   buffer.encode_uint32(3, this->flags);
-  buffer.encode_message(4, this->audio_settings);
+  buffer.encode_message(4, this->audio_settings, false);
   buffer.encode_string(5, this->wake_word_phrase);
 }
 void VoiceAssistantRequest::calculate_size(ProtoSize &size) const {
@@ -2516,7 +2516,7 @@ bool VoiceAssistantAudio::decode_length(uint32_t field_id, ProtoLengthDelimited
   }
   return true;
 }
-void VoiceAssistantAudio::encode(ProtoWriteBuffer buffer) const {
+void VoiceAssistantAudio::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_bytes(1, this->data, this->data_len);
   buffer.encode_bool(2, this->end);
 }
@@ -2587,9 +2587,9 @@ bool VoiceAssistantAnnounceRequest::decode_length(uint32_t field_id, ProtoLength
   }
   return true;
 }
-void VoiceAssistantAnnounceFinished::encode(ProtoWriteBuffer buffer) const { buffer.encode_bool(1, this->success); }
+void VoiceAssistantAnnounceFinished::encode(ProtoWriteBuffer &buffer) const { buffer.encode_bool(1, this->success); }
 void VoiceAssistantAnnounceFinished::calculate_size(ProtoSize &size) const { size.add_bool(1, this->success); }
-void VoiceAssistantWakeWord::encode(ProtoWriteBuffer buffer) const {
+void VoiceAssistantWakeWord::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->id);
   buffer.encode_string(2, this->wake_word);
   for (auto &it : this->trained_languages) {
@@ -2656,7 +2656,7 @@ bool VoiceAssistantConfigurationRequest::decode_length(uint32_t field_id, ProtoL
   }
   return true;
 }
-void VoiceAssistantConfigurationResponse::encode(ProtoWriteBuffer buffer) const {
+void VoiceAssistantConfigurationResponse::encode(ProtoWriteBuffer &buffer) const {
   for (auto &it : this->available_wake_words) {
     buffer.encode_message(1, it);
   }
@@ -2686,7 +2686,7 @@ bool VoiceAssistantSetConfiguration::decode_length(uint32_t field_id, ProtoLengt
 }
 #endif
 #ifdef USE_ALARM_CONTROL_PANEL
-void ListEntitiesAlarmControlPanelResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesAlarmControlPanelResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -2718,7 +2718,7 @@ void ListEntitiesAlarmControlPanelResponse::calculate_size(ProtoSize &size) cons
   size.add_uint32(1, this->device_id);
 #endif
 }
-void AlarmControlPanelStateResponse::encode(ProtoWriteBuffer buffer) const {
+void AlarmControlPanelStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_uint32(2, static_cast<uint32_t>(this->state));
 #ifdef USE_DEVICES
@@ -2770,7 +2770,7 @@ bool AlarmControlPanelCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit
 }
 #endif
 #ifdef USE_TEXT
-void ListEntitiesTextResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesTextResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -2804,7 +2804,7 @@ void ListEntitiesTextResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void TextStateResponse::encode(ProtoWriteBuffer buffer) const {
+void TextStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_string(2, this->state);
   buffer.encode_bool(3, this->missing_state);
@@ -2855,7 +2855,7 @@ bool TextCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_DATETIME_DATE
-void ListEntitiesDateResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesDateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -2881,7 +2881,7 @@ void ListEntitiesDateResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void DateStateResponse::encode(ProtoWriteBuffer buffer) const {
+void DateStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_bool(2, this->missing_state);
   buffer.encode_uint32(3, this->year);
@@ -2934,7 +2934,7 @@ bool DateCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_DATETIME_TIME
-void ListEntitiesTimeResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesTimeResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -2960,7 +2960,7 @@ void ListEntitiesTimeResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void TimeStateResponse::encode(ProtoWriteBuffer buffer) const {
+void TimeStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_bool(2, this->missing_state);
   buffer.encode_uint32(3, this->hour);
@@ -3013,7 +3013,7 @@ bool TimeCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_EVENT
-void ListEntitiesEventResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesEventResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -3049,7 +3049,7 @@ void ListEntitiesEventResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void EventResponse::encode(ProtoWriteBuffer buffer) const {
+void EventResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_string(2, this->event_type);
 #ifdef USE_DEVICES
@@ -3065,7 +3065,7 @@ void EventResponse::calculate_size(ProtoSize &size) const {
 }
 #endif
 #ifdef USE_VALVE
-void ListEntitiesValveResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesValveResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -3099,7 +3099,7 @@ void ListEntitiesValveResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void ValveStateResponse::encode(ProtoWriteBuffer buffer) const {
+void ValveStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_float(2, this->position);
   buffer.encode_uint32(3, static_cast<uint32_t>(this->current_operation));
@@ -3148,7 +3148,7 @@ bool ValveCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_DATETIME_DATETIME
-void ListEntitiesDateTimeResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesDateTimeResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -3174,7 +3174,7 @@ void ListEntitiesDateTimeResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void DateTimeStateResponse::encode(ProtoWriteBuffer buffer) const {
+void DateTimeStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_bool(2, this->missing_state);
   buffer.encode_fixed32(3, this->epoch_seconds);
@@ -3217,7 +3217,7 @@ bool DateTimeCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
 }
 #endif
 #ifdef USE_UPDATE
-void ListEntitiesUpdateResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesUpdateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -3245,7 +3245,7 @@ void ListEntitiesUpdateResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, this->device_id);
 #endif
 }
-void UpdateStateResponse::encode(ProtoWriteBuffer buffer) const {
+void UpdateStateResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_bool(2, this->missing_state);
   buffer.encode_bool(3, this->in_progress);
@@ -3314,7 +3314,7 @@ bool ZWaveProxyFrame::decode_length(uint32_t field_id, ProtoLengthDelimited valu
   }
   return true;
 }
-void ZWaveProxyFrame::encode(ProtoWriteBuffer buffer) const { buffer.encode_bytes(1, this->data, this->data_len); }
+void ZWaveProxyFrame::encode(ProtoWriteBuffer &buffer) const { buffer.encode_bytes(1, this->data, this->data_len); }
 void ZWaveProxyFrame::calculate_size(ProtoSize &size) const { size.add_length(1, this->data_len); }
 bool ZWaveProxyRequest::decode_varint(uint32_t field_id, ProtoVarInt value) {
   switch (field_id) {
@@ -3338,7 +3338,7 @@ bool ZWaveProxyRequest::decode_length(uint32_t field_id, ProtoLengthDelimited va
   }
   return true;
 }
-void ZWaveProxyRequest::encode(ProtoWriteBuffer buffer) const {
+void ZWaveProxyRequest::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_uint32(1, static_cast<uint32_t>(this->type));
   buffer.encode_bytes(2, this->data, this->data_len);
 }
@@ -3348,7 +3348,7 @@ void ZWaveProxyRequest::calculate_size(ProtoSize &size) const {
 }
 #endif
 #ifdef USE_INFRARED
-void ListEntitiesInfraredResponse::encode(ProtoWriteBuffer buffer) const {
+void ListEntitiesInfraredResponse::encode(ProtoWriteBuffer &buffer) const {
   buffer.encode_string(1, this->object_id);
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
@@ -3419,7 +3419,7 @@ bool InfraredRFTransmitRawTimingsRequest::decode_32bit(uint32_t field_id, Proto3
   }
   return true;
 }
-void InfraredRFReceiveEvent::encode(ProtoWriteBuffer buffer) const {
+void InfraredRFReceiveEvent::encode(ProtoWriteBuffer &buffer) const {
 #ifdef USE_DEVICES
   buffer.encode_uint32(1, this->device_id);
 #endif

esphome/components/api/api_pb2.h

@@ -147,6 +147,8 @@ enum WaterHeaterCommandHasField : uint32_t {
   WATER_HEATER_COMMAND_HAS_STATE = 4,
   WATER_HEATER_COMMAND_HAS_TARGET_TEMPERATURE_LOW = 8,
   WATER_HEATER_COMMAND_HAS_TARGET_TEMPERATURE_HIGH = 16,
+  WATER_HEATER_COMMAND_HAS_ON_STATE = 32,
+  WATER_HEATER_COMMAND_HAS_AWAY_STATE = 64,
 };
 #ifdef USE_NUMBER
 enum NumberMode : uint32_t {
@@ -380,7 +382,7 @@ class HelloResponse final : public ProtoMessage {
   uint32_t api_version_minor{0};
   StringRef server_info{};
   StringRef name{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -440,25 +442,12 @@ class PingResponse final : public ProtoMessage {
 
  protected:
 };
-class DeviceInfoRequest final : public ProtoMessage {
- public:
-  static constexpr uint8_t MESSAGE_TYPE = 9;
-  static constexpr uint8_t ESTIMATED_SIZE = 0;
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *message_name() const override { return "device_info_request"; }
-#endif
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *dump_to(DumpBuffer &out) const override;
-#endif
-
- protected:
-};
 #ifdef USE_AREAS
 class AreaInfo final : public ProtoMessage {
  public:
   uint32_t area_id{0};
   StringRef name{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -473,7 +462,7 @@ class DeviceInfo final : public ProtoMessage {
   uint32_t device_id{0};
   StringRef name{};
   uint32_t area_id{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -538,7 +527,7 @@ class DeviceInfoResponse final : public ProtoMessage {
 #ifdef USE_ZWAVE_PROXY
   uint32_t zwave_home_id{0};
 #endif
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -546,19 +535,6 @@ class DeviceInfoResponse final : public ProtoMessage {
 
  protected:
 };
-class ListEntitiesRequest final : public ProtoMessage {
- public:
-  static constexpr uint8_t MESSAGE_TYPE = 11;
-  static constexpr uint8_t ESTIMATED_SIZE = 0;
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *message_name() const override { return "list_entities_request"; }
-#endif
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *dump_to(DumpBuffer &out) const override;
-#endif
-
- protected:
-};
 class ListEntitiesDoneResponse final : public ProtoMessage {
  public:
   static constexpr uint8_t MESSAGE_TYPE = 19;
@@ -572,19 +548,6 @@ class ListEntitiesDoneResponse final : public ProtoMessage {
 
  protected:
 };
-class SubscribeStatesRequest final : public ProtoMessage {
- public:
-  static constexpr uint8_t MESSAGE_TYPE = 20;
-  static constexpr uint8_t ESTIMATED_SIZE = 0;
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *message_name() const override { return "subscribe_states_request"; }
-#endif
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *dump_to(DumpBuffer &out) const override;
-#endif
-
- protected:
-};
 #ifdef USE_BINARY_SENSOR
 class ListEntitiesBinarySensorResponse final : public InfoResponseProtoMessage {
  public:
@@ -595,7 +558,7 @@ class ListEntitiesBinarySensorResponse final : public InfoResponseProtoMessage {
 #endif
   StringRef device_class{};
   bool is_status_binary_sensor{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -612,7 +575,7 @@ class BinarySensorStateResponse final : public StateResponseProtoMessage {
 #endif
   bool state{false};
   bool missing_state{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -634,7 +597,7 @@ class ListEntitiesCoverResponse final : public InfoResponseProtoMessage {
   bool supports_tilt{false};
   StringRef device_class{};
   bool supports_stop{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -652,7 +615,7 @@ class CoverStateResponse final : public StateResponseProtoMessage {
   float position{0.0f};
   float tilt{0.0f};
   enums::CoverOperation current_operation{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -694,7 +657,7 @@ class ListEntitiesFanResponse final : public InfoResponseProtoMessage {
   bool supports_direction{false};
   int32_t supported_speed_count{0};
   const std::vector<const char *> *supported_preset_modes{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -714,7 +677,7 @@ class FanStateResponse final : public StateResponseProtoMessage {
   enums::FanDirection direction{};
   int32_t speed_level{0};
   StringRef preset_mode{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -761,7 +724,7 @@ class ListEntitiesLightResponse final : public InfoResponseProtoMessage {
   float min_mireds{0.0f};
   float max_mireds{0.0f};
   const FixedVector<const char *> *effects{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -788,7 +751,7 @@ class LightStateResponse final : public StateResponseProtoMessage {
   float cold_white{0.0f};
   float warm_white{0.0f};
   StringRef effect{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -852,7 +815,7 @@ class ListEntitiesSensorResponse final : public InfoResponseProtoMessage {
   bool force_update{false};
   StringRef device_class{};
   enums::SensorStateClass state_class{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -869,7 +832,7 @@ class SensorStateResponse final : public StateResponseProtoMessage {
 #endif
   float state{0.0f};
   bool missing_state{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -888,7 +851,7 @@ class ListEntitiesSwitchResponse final : public InfoResponseProtoMessage {
 #endif
   bool assumed_state{false};
   StringRef device_class{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -904,7 +867,7 @@ class SwitchStateResponse final : public StateResponseProtoMessage {
   const char *message_name() const override { return "switch_state_response"; }
 #endif
   bool state{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -938,7 +901,7 @@ class ListEntitiesTextSensorResponse final : public InfoResponseProtoMessage {
   const char *message_name() const override { return "list_entities_text_sensor_response"; }
 #endif
   StringRef device_class{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -955,7 +918,7 @@ class TextSensorStateResponse final : public StateResponseProtoMessage {
 #endif
   StringRef state{};
   bool missing_state{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -994,7 +957,7 @@ class SubscribeLogsResponse final : public ProtoMessage {
     this->message_ptr_ = data;
     this->message_len_ = len;
   }
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1027,7 +990,7 @@ class NoiseEncryptionSetKeyResponse final : public ProtoMessage {
   const char *message_name() const override { return "noise_encryption_set_key_response"; }
 #endif
   bool success{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1037,24 +1000,11 @@ class NoiseEncryptionSetKeyResponse final : public ProtoMessage {
 };
 #endif
 #ifdef USE_API_HOMEASSISTANT_SERVICES
-class SubscribeHomeassistantServicesRequest final : public ProtoMessage {
- public:
-  static constexpr uint8_t MESSAGE_TYPE = 34;
-  static constexpr uint8_t ESTIMATED_SIZE = 0;
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *message_name() const override { return "subscribe_homeassistant_services_request"; }
-#endif
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *dump_to(DumpBuffer &out) const override;
-#endif
-
- protected:
-};
 class HomeassistantServiceMap final : public ProtoMessage {
  public:
   StringRef key{};
   StringRef value{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1083,7 +1033,7 @@ class HomeassistantActionRequest final : public ProtoMessage {
 #ifdef USE_API_HOMEASSISTANT_ACTION_RESPONSES_JSON
   StringRef response_template{};
 #endif
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1117,19 +1067,6 @@ class HomeassistantActionResponse final : public ProtoDecodableMessage {
 };
 #endif
 #ifdef USE_API_HOMEASSISTANT_STATES
-class SubscribeHomeAssistantStatesRequest final : public ProtoMessage {
- public:
-  static constexpr uint8_t MESSAGE_TYPE = 38;
-  static constexpr uint8_t ESTIMATED_SIZE = 0;
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *message_name() const override { return "subscribe_home_assistant_states_request"; }
-#endif
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *dump_to(DumpBuffer &out) const override;
-#endif
-
- protected:
-};
 class SubscribeHomeAssistantStateResponse final : public ProtoMessage {
  public:
   static constexpr uint8_t MESSAGE_TYPE = 39;
@@ -1140,7 +1077,7 @@ class SubscribeHomeAssistantStateResponse final : public ProtoMessage {
   StringRef entity_id{};
   StringRef attribute{};
   bool once{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1201,7 +1138,7 @@ class ListEntitiesServicesArgument final : public ProtoMessage {
  public:
   StringRef name{};
   enums::ServiceArgType type{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1220,7 +1157,7 @@ class ListEntitiesServicesResponse final : public ProtoMessage {
   uint32_t key{0};
   FixedVector<ListEntitiesServicesArgument> args{};
   enums::SupportsResponseType supports_response{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1290,7 +1227,7 @@ class ExecuteServiceResponse final : public ProtoMessage {
   const uint8_t *response_data{nullptr};
   uint16_t response_data_len{0};
 #endif
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1307,7 +1244,7 @@ class ListEntitiesCameraResponse final : public InfoResponseProtoMessage {
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *message_name() const override { return "list_entities_camera_response"; }
 #endif
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1329,7 +1266,7 @@ class CameraImageResponse final : public StateResponseProtoMessage {
     this->data_len_ = len;
   }
   bool done{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1380,7 +1317,7 @@ class ListEntitiesClimateResponse final : public InfoResponseProtoMessage {
   float visual_min_humidity{0.0f};
   float visual_max_humidity{0.0f};
   uint32_t feature_flags{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1408,7 +1345,7 @@ class ClimateStateResponse final : public StateResponseProtoMessage {
   StringRef custom_preset{};
   float current_humidity{0.0f};
   float target_humidity{0.0f};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1466,7 +1403,7 @@ class ListEntitiesWaterHeaterResponse final : public InfoResponseProtoMessage {
   float target_temperature_step{0.0f};
   const water_heater::WaterHeaterModeMask *supported_modes{};
   uint32_t supported_features{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1487,7 +1424,7 @@ class WaterHeaterStateResponse final : public StateResponseProtoMessage {
   uint32_t state{0};
   float target_temperature_low{0.0f};
   float target_temperature_high{0.0f};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1531,7 +1468,7 @@ class ListEntitiesNumberResponse final : public InfoResponseProtoMessage {
   StringRef unit_of_measurement{};
   enums::NumberMode mode{};
   StringRef device_class{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1548,7 +1485,7 @@ class NumberStateResponse final : public StateResponseProtoMessage {
 #endif
   float state{0.0f};
   bool missing_state{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1582,7 +1519,7 @@ class ListEntitiesSelectResponse final : public InfoResponseProtoMessage {
   const char *message_name() const override { return "list_entities_select_response"; }
 #endif
   const FixedVector<const char *> *options{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1599,7 +1536,7 @@ class SelectStateResponse final : public StateResponseProtoMessage {
 #endif
   StringRef state{};
   bool missing_state{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1636,7 +1573,7 @@ class ListEntitiesSirenResponse final : public InfoResponseProtoMessage {
   const FixedVector<const char *> *tones{};
   bool supports_duration{false};
   bool supports_volume{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1652,7 +1589,7 @@ class SirenStateResponse final : public StateResponseProtoMessage {
   const char *message_name() const override { return "siren_state_response"; }
 #endif
   bool state{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1697,7 +1634,7 @@ class ListEntitiesLockResponse final : public InfoResponseProtoMessage {
   bool supports_open{false};
   bool requires_code{false};
   StringRef code_format{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1713,7 +1650,7 @@ class LockStateResponse final : public StateResponseProtoMessage {
   const char *message_name() const override { return "lock_state_response"; }
 #endif
   enums::LockState state{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1750,7 +1687,7 @@ class ListEntitiesButtonResponse final : public InfoResponseProtoMessage {
   const char *message_name() const override { return "list_entities_button_response"; }
 #endif
   StringRef device_class{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1782,7 +1719,7 @@ class MediaPlayerSupportedFormat final : public ProtoMessage {
   uint32_t num_channels{0};
   enums::MediaPlayerFormatPurpose purpose{};
   uint32_t sample_bytes{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1800,7 +1737,7 @@ class ListEntitiesMediaPlayerResponse final : public InfoResponseProtoMessage {
   bool supports_pause{false};
   std::vector<MediaPlayerSupportedFormat> supported_formats{};
   uint32_t feature_flags{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1818,7 +1755,7 @@ class MediaPlayerStateResponse final : public StateResponseProtoMessage {
   enums::MediaPlayerState state{};
   float volume{0.0f};
   bool muted{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1874,7 +1811,7 @@ class BluetoothLERawAdvertisement final : public ProtoMessage {
   uint32_t address_type{0};
   uint8_t data[62]{};
   uint8_t data_len{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1891,7 +1828,7 @@ class BluetoothLERawAdvertisementsResponse final : public ProtoMessage {
 #endif
   std::array<BluetoothLERawAdvertisement, BLUETOOTH_PROXY_ADVERTISEMENT_BATCH_SIZE> advertisements{};
   uint16_t advertisements_len{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1928,7 +1865,7 @@ class BluetoothDeviceConnectionResponse final : public ProtoMessage {
   bool connected{false};
   uint32_t mtu{0};
   int32_t error{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1956,7 +1893,7 @@ class BluetoothGATTDescriptor final : public ProtoMessage {
   std::array<uint64_t, 2> uuid{};
   uint32_t handle{0};
   uint32_t short_uuid{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1971,7 +1908,7 @@ class BluetoothGATTCharacteristic final : public ProtoMessage {
   uint32_t properties{0};
   FixedVector<BluetoothGATTDescriptor> descriptors{};
   uint32_t short_uuid{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -1985,7 +1922,7 @@ class BluetoothGATTService final : public ProtoMessage {
   uint32_t handle{0};
   FixedVector<BluetoothGATTCharacteristic> characteristics{};
   uint32_t short_uuid{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2002,7 +1939,7 @@ class BluetoothGATTGetServicesResponse final : public ProtoMessage {
 #endif
   uint64_t address{0};
   std::vector<BluetoothGATTService> services{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2018,7 +1955,7 @@ class BluetoothGATTGetServicesDoneResponse final : public ProtoMessage {
   const char *message_name() const override { return "bluetooth_gatt_get_services_done_response"; }
 #endif
   uint64_t address{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2057,7 +1994,7 @@ class BluetoothGATTReadResponse final : public ProtoMessage {
     this->data_ptr_ = data;
     this->data_len_ = len;
   }
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2152,7 +2089,7 @@ class BluetoothGATTNotifyDataResponse final : public ProtoMessage {
     this->data_ptr_ = data;
     this->data_len_ = len;
   }
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2160,19 +2097,6 @@ class BluetoothGATTNotifyDataResponse final : public ProtoMessage {
 
  protected:
 };
-class SubscribeBluetoothConnectionsFreeRequest final : public ProtoMessage {
- public:
-  static constexpr uint8_t MESSAGE_TYPE = 80;
-  static constexpr uint8_t ESTIMATED_SIZE = 0;
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *message_name() const override { return "subscribe_bluetooth_connections_free_request"; }
-#endif
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *dump_to(DumpBuffer &out) const override;
-#endif
-
- protected:
-};
 class BluetoothConnectionsFreeResponse final : public ProtoMessage {
  public:
   static constexpr uint8_t MESSAGE_TYPE = 81;
@@ -2183,7 +2107,7 @@ class BluetoothConnectionsFreeResponse final : public ProtoMessage {
   uint32_t free{0};
   uint32_t limit{0};
   std::array<uint64_t, BLUETOOTH_PROXY_MAX_CONNECTIONS> allocated{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2201,7 +2125,7 @@ class BluetoothGATTErrorResponse final : public ProtoMessage {
   uint64_t address{0};
   uint32_t handle{0};
   int32_t error{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2218,7 +2142,7 @@ class BluetoothGATTWriteResponse final : public ProtoMessage {
 #endif
   uint64_t address{0};
   uint32_t handle{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2235,7 +2159,7 @@ class BluetoothGATTNotifyResponse final : public ProtoMessage {
 #endif
   uint64_t address{0};
   uint32_t handle{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2253,7 +2177,7 @@ class BluetoothDevicePairingResponse final : public ProtoMessage {
   uint64_t address{0};
   bool paired{false};
   int32_t error{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2271,7 +2195,7 @@ class BluetoothDeviceUnpairingResponse final : public ProtoMessage {
   uint64_t address{0};
   bool success{false};
   int32_t error{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2279,19 +2203,6 @@ class BluetoothDeviceUnpairingResponse final : public ProtoMessage {
 
  protected:
 };
-class UnsubscribeBluetoothLEAdvertisementsRequest final : public ProtoMessage {
- public:
-  static constexpr uint8_t MESSAGE_TYPE = 87;
-  static constexpr uint8_t ESTIMATED_SIZE = 0;
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *message_name() const override { return "unsubscribe_bluetooth_le_advertisements_request"; }
-#endif
-#ifdef HAS_PROTO_MESSAGE_DUMP
-  const char *dump_to(DumpBuffer &out) const override;
-#endif
-
- protected:
-};
 class BluetoothDeviceClearCacheResponse final : public ProtoMessage {
  public:
   static constexpr uint8_t MESSAGE_TYPE = 88;
@@ -2302,7 +2213,7 @@ class BluetoothDeviceClearCacheResponse final : public ProtoMessage {
   uint64_t address{0};
   bool success{false};
   int32_t error{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2320,7 +2231,7 @@ class BluetoothScannerStateResponse final : public ProtoMessage {
   enums::BluetoothScannerState state{};
   enums::BluetoothScannerMode mode{};
   enums::BluetoothScannerMode configured_mode{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2366,7 +2277,7 @@ class VoiceAssistantAudioSettings final : public ProtoMessage {
   uint32_t noise_suppression_level{0};
   uint32_t auto_gain{0};
   float volume_multiplier{0.0f};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2386,7 +2297,7 @@ class VoiceAssistantRequest final : public ProtoMessage {
   uint32_t flags{0};
   VoiceAssistantAudioSettings audio_settings{};
   StringRef wake_word_phrase{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2448,7 +2359,7 @@ class VoiceAssistantAudio final : public ProtoDecodableMessage {
   const uint8_t *data{nullptr};
   uint16_t data_len{0};
   bool end{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2506,7 +2417,7 @@ class VoiceAssistantAnnounceFinished final : public ProtoMessage {
   const char *message_name() const override { return "voice_assistant_announce_finished"; }
 #endif
   bool success{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2519,7 +2430,7 @@ class VoiceAssistantWakeWord final : public ProtoMessage {
   StringRef id{};
   StringRef wake_word{};
   std::vector<std::string> trained_languages{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2569,7 +2480,7 @@ class VoiceAssistantConfigurationResponse final : public ProtoMessage {
   std::vector<VoiceAssistantWakeWord> available_wake_words{};
   const std::vector<std::string> *active_wake_words{};
   uint32_t max_active_wake_words{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2604,7 +2515,7 @@ class ListEntitiesAlarmControlPanelResponse final : public InfoResponseProtoMess
   uint32_t supported_features{0};
   bool requires_code{false};
   bool requires_code_to_arm{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2620,7 +2531,7 @@ class AlarmControlPanelStateResponse final : public StateResponseProtoMessage {
   const char *message_name() const override { return "alarm_control_panel_state_response"; }
 #endif
   enums::AlarmControlPanelState state{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2659,7 +2570,7 @@ class ListEntitiesTextResponse final : public InfoResponseProtoMessage {
   uint32_t max_length{0};
   StringRef pattern{};
   enums::TextMode mode{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2676,7 +2587,7 @@ class TextStateResponse final : public StateResponseProtoMessage {
 #endif
   StringRef state{};
   bool missing_state{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2710,7 +2621,7 @@ class ListEntitiesDateResponse final : public InfoResponseProtoMessage {
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *message_name() const override { return "list_entities_date_response"; }
 #endif
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2729,7 +2640,7 @@ class DateStateResponse final : public StateResponseProtoMessage {
   uint32_t year{0};
   uint32_t month{0};
   uint32_t day{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2764,7 +2675,7 @@ class ListEntitiesTimeResponse final : public InfoResponseProtoMessage {
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *message_name() const override { return "list_entities_time_response"; }
 #endif
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2783,7 +2694,7 @@ class TimeStateResponse final : public StateResponseProtoMessage {
   uint32_t hour{0};
   uint32_t minute{0};
   uint32_t second{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2820,7 +2731,7 @@ class ListEntitiesEventResponse final : public InfoResponseProtoMessage {
 #endif
   StringRef device_class{};
   const FixedVector<const char *> *event_types{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2836,7 +2747,7 @@ class EventResponse final : public StateResponseProtoMessage {
   const char *message_name() const override { return "event_response"; }
 #endif
   StringRef event_type{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2857,7 +2768,7 @@ class ListEntitiesValveResponse final : public InfoResponseProtoMessage {
   bool assumed_state{false};
   bool supports_position{false};
   bool supports_stop{false};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2874,7 +2785,7 @@ class ValveStateResponse final : public StateResponseProtoMessage {
 #endif
   float position{0.0f};
   enums::ValveOperation current_operation{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2909,7 +2820,7 @@ class ListEntitiesDateTimeResponse final : public InfoResponseProtoMessage {
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *message_name() const override { return "list_entities_date_time_response"; }
 #endif
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2926,7 +2837,7 @@ class DateTimeStateResponse final : public StateResponseProtoMessage {
 #endif
   bool missing_state{false};
   uint32_t epoch_seconds{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2960,7 +2871,7 @@ class ListEntitiesUpdateResponse final : public InfoResponseProtoMessage {
   const char *message_name() const override { return "list_entities_update_response"; }
 #endif
   StringRef device_class{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -2984,7 +2895,7 @@ class UpdateStateResponse final : public StateResponseProtoMessage {
   StringRef title{};
   StringRef release_summary{};
   StringRef release_url{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -3019,7 +2930,7 @@ class ZWaveProxyFrame final : public ProtoDecodableMessage {
 #endif
   const uint8_t *data{nullptr};
   uint16_t data_len{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -3038,7 +2949,7 @@ class ZWaveProxyRequest final : public ProtoDecodableMessage {
   enums::ZWaveProxyRequestType type{};
   const uint8_t *data{nullptr};
   uint16_t data_len{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -3058,7 +2969,7 @@ class ListEntitiesInfraredResponse final : public InfoResponseProtoMessage {
   const char *message_name() const override { return "list_entities_infrared_response"; }
 #endif
   uint32_t capabilities{0};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
@@ -3105,7 +3016,7 @@ class InfraredRFReceiveEvent final : public ProtoMessage {
 #endif
   uint32_t key{0};
   const std::vector<int32_t> *timings{};
-  void encode(ProtoWriteBuffer buffer) const override;
+  void encode(ProtoWriteBuffer &buffer) const override;
   void calculate_size(ProtoSize &size) const override;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;

esphome/components/api/api_pb2_dump.cpp

@@ -23,15 +23,8 @@ static inline void append_field_prefix(DumpBuffer &out, const char *field_name,
   out.append(indent, ' ').append(field_name).append(": ");
 }
 
-static inline void append_with_newline(DumpBuffer &out, const char *str) {
-  out.append(str);
-  out.append("\n");
-}
-
 static inline void append_uint(DumpBuffer &out, uint32_t value) {
-  char buf[16];
-  snprintf(buf, sizeof(buf), "%" PRIu32, value);
-  out.append(buf);
+  out.set_pos(buf_append_printf(out.data(), DumpBuffer::CAPACITY, out.pos(), "%" PRIu32, value));
 }
 
 // RAII helper for message dump formatting
@@ -49,31 +42,23 @@ class MessageDumpHelper {
 
 // Helper functions to reduce code duplication in dump methods
 static void dump_field(DumpBuffer &out, const char *field_name, int32_t value, int indent = 2) {
-  char buffer[64];
   append_field_prefix(out, field_name, indent);
-  snprintf(buffer, 64, "%" PRId32, value);
-  append_with_newline(out, buffer);
+  out.set_pos(buf_append_printf(out.data(), DumpBuffer::CAPACITY, out.pos(), "%" PRId32 "\n", value));
 }
 
 static void dump_field(DumpBuffer &out, const char *field_name, uint32_t value, int indent = 2) {
-  char buffer[64];
   append_field_prefix(out, field_name, indent);
-  snprintf(buffer, 64, "%" PRIu32, value);
-  append_with_newline(out, buffer);
+  out.set_pos(buf_append_printf(out.data(), DumpBuffer::CAPACITY, out.pos(), "%" PRIu32 "\n", value));
 }
 
 static void dump_field(DumpBuffer &out, const char *field_name, float value, int indent = 2) {
-  char buffer[64];
   append_field_prefix(out, field_name, indent);
-  snprintf(buffer, 64, "%g", value);
-  append_with_newline(out, buffer);
+  out.set_pos(buf_append_printf(out.data(), DumpBuffer::CAPACITY, out.pos(), "%g\n", value));
 }
 
 static void dump_field(DumpBuffer &out, const char *field_name, uint64_t value, int indent = 2) {
-  char buffer[64];
   append_field_prefix(out, field_name, indent);
-  snprintf(buffer, 64, "%" PRIu64, value);
-  append_with_newline(out, buffer);
+  out.set_pos(buf_append_printf(out.data(), DumpBuffer::CAPACITY, out.pos(), "%" PRIu64 "\n", value));
 }
 
 static void dump_field(DumpBuffer &out, const char *field_name, bool value, int indent = 2) {
@@ -112,7 +97,7 @@ static void dump_bytes_field(DumpBuffer &out, const char *field_name, const uint
   char hex_buf[format_hex_pretty_size(160)];
   append_field_prefix(out, field_name, indent);
   format_hex_pretty_to(hex_buf, data, len);
-  append_with_newline(out, hex_buf);
+  out.append(hex_buf).append("\n");
 }
 
 template<> const char *proto_enum_to_string<enums::EntityCategory>(enums::EntityCategory value) {
@@ -400,6 +385,10 @@ const char *proto_enum_to_string<enums::WaterHeaterCommandHasField>(enums::Water
       return "WATER_HEATER_COMMAND_HAS_TARGET_TEMPERATURE_LOW";
     case enums::WATER_HEATER_COMMAND_HAS_TARGET_TEMPERATURE_HIGH:
       return "WATER_HEATER_COMMAND_HAS_TARGET_TEMPERATURE_HIGH";
+    case enums::WATER_HEATER_COMMAND_HAS_ON_STATE:
+      return "WATER_HEATER_COMMAND_HAS_ON_STATE";
+    case enums::WATER_HEATER_COMMAND_HAS_AWAY_STATE:
+      return "WATER_HEATER_COMMAND_HAS_AWAY_STATE";
     default:
       return "UNKNOWN";
   }
@@ -779,10 +768,6 @@ const char *PingResponse::dump_to(DumpBuffer &out) const {
   out.append("PingResponse {}");
   return out.c_str();
 }
-const char *DeviceInfoRequest::dump_to(DumpBuffer &out) const {
-  out.append("DeviceInfoRequest {}");
-  return out.c_str();
-}
 #ifdef USE_AREAS
 const char *AreaInfo::dump_to(DumpBuffer &out) const {
   MessageDumpHelper helper(out, "AreaInfo");
@@ -863,18 +848,10 @@ const char *DeviceInfoResponse::dump_to(DumpBuffer &out) const {
 #endif
   return out.c_str();
 }
-const char *ListEntitiesRequest::dump_to(DumpBuffer &out) const {
-  out.append("ListEntitiesRequest {}");
-  return out.c_str();
-}
 const char *ListEntitiesDoneResponse::dump_to(DumpBuffer &out) const {
   out.append("ListEntitiesDoneResponse {}");
   return out.c_str();
 }
-const char *SubscribeStatesRequest::dump_to(DumpBuffer &out) const {
-  out.append("SubscribeStatesRequest {}");
-  return out.c_str();
-}
 #ifdef USE_BINARY_SENSOR
 const char *ListEntitiesBinarySensorResponse::dump_to(DumpBuffer &out) const {
   MessageDumpHelper helper(out, "ListEntitiesBinarySensorResponse");
@@ -1206,10 +1183,6 @@ const char *NoiseEncryptionSetKeyResponse::dump_to(DumpBuffer &out) const {
 }
 #endif
 #ifdef USE_API_HOMEASSISTANT_SERVICES
-const char *SubscribeHomeassistantServicesRequest::dump_to(DumpBuffer &out) const {
-  out.append("SubscribeHomeassistantServicesRequest {}");
-  return out.c_str();
-}
 const char *HomeassistantServiceMap::dump_to(DumpBuffer &out) const {
   MessageDumpHelper helper(out, "HomeassistantServiceMap");
   dump_field(out, "key", this->key);
@@ -1260,10 +1233,6 @@ const char *HomeassistantActionResponse::dump_to(DumpBuffer &out) const {
 }
 #endif
 #ifdef USE_API_HOMEASSISTANT_STATES
-const char *SubscribeHomeAssistantStatesRequest::dump_to(DumpBuffer &out) const {
-  out.append("SubscribeHomeAssistantStatesRequest {}");
-  return out.c_str();
-}
 const char *SubscribeHomeAssistantStateResponse::dump_to(DumpBuffer &out) const {
   MessageDumpHelper helper(out, "SubscribeHomeAssistantStateResponse");
   dump_field(out, "entity_id", this->entity_id);
@@ -1939,10 +1908,6 @@ const char *BluetoothGATTNotifyDataResponse::dump_to(DumpBuffer &out) const {
   dump_bytes_field(out, "data", this->data_ptr_, this->data_len_);
   return out.c_str();
 }
-const char *SubscribeBluetoothConnectionsFreeRequest::dump_to(DumpBuffer &out) const {
-  out.append("SubscribeBluetoothConnectionsFreeRequest {}");
-  return out.c_str();
-}
 const char *BluetoothConnectionsFreeResponse::dump_to(DumpBuffer &out) const {
   MessageDumpHelper helper(out, "BluetoothConnectionsFreeResponse");
   dump_field(out, "free", this->free);
@@ -1985,10 +1950,6 @@ const char *BluetoothDeviceUnpairingResponse::dump_to(DumpBuffer &out) const {
   dump_field(out, "error", this->error);
   return out.c_str();
 }
-const char *UnsubscribeBluetoothLEAdvertisementsRequest::dump_to(DumpBuffer &out) const {
-  out.append("UnsubscribeBluetoothLEAdvertisementsRequest {}");
-  return out.c_str();
-}
 const char *BluetoothDeviceClearCacheResponse::dump_to(DumpBuffer &out) const {
   MessageDumpHelper helper(out, "BluetoothDeviceClearCacheResponse");
   dump_field(out, "address", this->address);

esphome/components/api/api_pb2_service.cpp

@@ -15,9 +15,29 @@ void APIServerConnectionBase::log_receive_message_(const LogString *name, const
   DumpBuffer dump_buf;
   ESP_LOGVV(TAG, "%s: %s", LOG_STR_ARG(name), msg.dump_to(dump_buf));
 }
+void APIServerConnectionBase::log_receive_message_(const LogString *name) {
+  ESP_LOGVV(TAG, "%s: {}", LOG_STR_ARG(name));
+}
 #endif
 
 void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type, const uint8_t *msg_data) {
+  // Check authentication/connection requirements
+  switch (msg_type) {
+    case HelloRequest::MESSAGE_TYPE:       // No setup required
+    case DisconnectRequest::MESSAGE_TYPE:  // No setup required
+    case PingRequest::MESSAGE_TYPE:        // No setup required
+      break;
+    case 9 /* DeviceInfoRequest is empty */:  // Connection setup only
+      if (!this->check_connection_setup_()) {
+        return;
+      }
+      break;
+    default:
+      if (!this->check_authenticated_()) {
+        return;
+      }
+      break;
+  }
   switch (msg_type) {
     case HelloRequest::MESSAGE_TYPE: {
       HelloRequest msg;
@@ -29,66 +49,52 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
       break;
     }
     case DisconnectRequest::MESSAGE_TYPE: {
-      DisconnectRequest msg;
-      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_disconnect_request"), msg);
+      this->log_receive_message_(LOG_STR("on_disconnect_request"));
 #endif
-      this->on_disconnect_request(msg);
+      this->on_disconnect_request();
       break;
     }
     case DisconnectResponse::MESSAGE_TYPE: {
-      DisconnectResponse msg;
-      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_disconnect_response"), msg);
+      this->log_receive_message_(LOG_STR("on_disconnect_response"));
 #endif
-      this->on_disconnect_response(msg);
+      this->on_disconnect_response();
       break;
     }
     case PingRequest::MESSAGE_TYPE: {
-      PingRequest msg;
-      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_ping_request"), msg);
+      this->log_receive_message_(LOG_STR("on_ping_request"));
 #endif
-      this->on_ping_request(msg);
+      this->on_ping_request();
       break;
     }
     case PingResponse::MESSAGE_TYPE: {
-      PingResponse msg;
-      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_ping_response"), msg);
+      this->log_receive_message_(LOG_STR("on_ping_response"));
 #endif
-      this->on_ping_response(msg);
+      this->on_ping_response();
       break;
     }
-    case DeviceInfoRequest::MESSAGE_TYPE: {
-      DeviceInfoRequest msg;
-      // Empty message: no decode needed
+    case 9 /* DeviceInfoRequest is empty */: {
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_device_info_request"), msg);
+      this->log_receive_message_(LOG_STR("on_device_info_request"));
 #endif
-      this->on_device_info_request(msg);
+      this->on_device_info_request();
       break;
     }
-    case ListEntitiesRequest::MESSAGE_TYPE: {
-      ListEntitiesRequest msg;
-      // Empty message: no decode needed
+    case 11 /* ListEntitiesRequest is empty */: {
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_list_entities_request"), msg);
+      this->log_receive_message_(LOG_STR("on_list_entities_request"));
 #endif
-      this->on_list_entities_request(msg);
+      this->on_list_entities_request();
       break;
     }
-    case SubscribeStatesRequest::MESSAGE_TYPE: {
-      SubscribeStatesRequest msg;
-      // Empty message: no decode needed
+    case 20 /* SubscribeStatesRequest is empty */: {
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_subscribe_states_request"), msg);
+      this->log_receive_message_(LOG_STR("on_subscribe_states_request"));
 #endif
-      this->on_subscribe_states_request(msg);
+      this->on_subscribe_states_request();
       break;
     }
     case SubscribeLogsRequest::MESSAGE_TYPE: {
@@ -145,13 +151,11 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_API_HOMEASSISTANT_SERVICES
-    case SubscribeHomeassistantServicesRequest::MESSAGE_TYPE: {
-      SubscribeHomeassistantServicesRequest msg;
-      // Empty message: no decode needed
+    case 34 /* SubscribeHomeassistantServicesRequest is empty */: {
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_subscribe_homeassistant_services_request"), msg);
+      this->log_receive_message_(LOG_STR("on_subscribe_homeassistant_services_request"));
 #endif
-      this->on_subscribe_homeassistant_services_request(msg);
+      this->on_subscribe_homeassistant_services_request();
       break;
     }
 #endif
@@ -165,13 +169,11 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
       break;
     }
 #ifdef USE_API_HOMEASSISTANT_STATES
-    case SubscribeHomeAssistantStatesRequest::MESSAGE_TYPE: {
-      SubscribeHomeAssistantStatesRequest msg;
-      // Empty message: no decode needed
+    case 38 /* SubscribeHomeAssistantStatesRequest is empty */: {
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_subscribe_home_assistant_states_request"), msg);
+      this->log_receive_message_(LOG_STR("on_subscribe_home_assistant_states_request"));
 #endif
-      this->on_subscribe_home_assistant_states_request(msg);
+      this->on_subscribe_home_assistant_states_request();
       break;
     }
 #endif
@@ -374,24 +376,20 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case SubscribeBluetoothConnectionsFreeRequest::MESSAGE_TYPE: {
-      SubscribeBluetoothConnectionsFreeRequest msg;
-      // Empty message: no decode needed
+    case 80 /* SubscribeBluetoothConnectionsFreeRequest is empty */: {
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_subscribe_bluetooth_connections_free_request"), msg);
+      this->log_receive_message_(LOG_STR("on_subscribe_bluetooth_connections_free_request"));
 #endif
-      this->on_subscribe_bluetooth_connections_free_request(msg);
+      this->on_subscribe_bluetooth_connections_free_request();
       break;
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case UnsubscribeBluetoothLEAdvertisementsRequest::MESSAGE_TYPE: {
-      UnsubscribeBluetoothLEAdvertisementsRequest msg;
-      // Empty message: no decode needed
+    case 87 /* UnsubscribeBluetoothLEAdvertisementsRequest is empty */: {
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_unsubscribe_bluetooth_le_advertisements_request"), msg);
+      this->log_receive_message_(LOG_STR("on_unsubscribe_bluetooth_le_advertisements_request"));
 #endif
-      this->on_unsubscribe_bluetooth_le_advertisements_request(msg);
+      this->on_unsubscribe_bluetooth_le_advertisements_request();
       break;
     }
 #endif
@@ -642,226 +640,4 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
   }
 }
 
-void APIServerConnection::on_hello_request(const HelloRequest &msg) {
-  if (!this->send_hello_response(msg)) {
-    this->on_fatal_error();
-  }
-}
-void APIServerConnection::on_disconnect_request(const DisconnectRequest &msg) {
-  if (!this->send_disconnect_response(msg)) {
-    this->on_fatal_error();
-  }
-}
-void APIServerConnection::on_ping_request(const PingRequest &msg) {
-  if (!this->send_ping_response(msg)) {
-    this->on_fatal_error();
-  }
-}
-void APIServerConnection::on_device_info_request(const DeviceInfoRequest &msg) {
-  if (!this->send_device_info_response(msg)) {
-    this->on_fatal_error();
-  }
-}
-void APIServerConnection::on_list_entities_request(const ListEntitiesRequest &msg) { this->list_entities(msg); }
-void APIServerConnection::on_subscribe_states_request(const SubscribeStatesRequest &msg) {
-  this->subscribe_states(msg);
-}
-void APIServerConnection::on_subscribe_logs_request(const SubscribeLogsRequest &msg) { this->subscribe_logs(msg); }
-#ifdef USE_API_HOMEASSISTANT_SERVICES
-void APIServerConnection::on_subscribe_homeassistant_services_request(
-    const SubscribeHomeassistantServicesRequest &msg) {
-  this->subscribe_homeassistant_services(msg);
-}
-#endif
-#ifdef USE_API_HOMEASSISTANT_STATES
-void APIServerConnection::on_subscribe_home_assistant_states_request(const SubscribeHomeAssistantStatesRequest &msg) {
-  this->subscribe_home_assistant_states(msg);
-}
-#endif
-#ifdef USE_API_USER_DEFINED_ACTIONS
-void APIServerConnection::on_execute_service_request(const ExecuteServiceRequest &msg) { this->execute_service(msg); }
-#endif
-#ifdef USE_API_NOISE
-void APIServerConnection::on_noise_encryption_set_key_request(const NoiseEncryptionSetKeyRequest &msg) {
-  if (!this->send_noise_encryption_set_key_response(msg)) {
-    this->on_fatal_error();
-  }
-}
-#endif
-#ifdef USE_BUTTON
-void APIServerConnection::on_button_command_request(const ButtonCommandRequest &msg) { this->button_command(msg); }
-#endif
-#ifdef USE_CAMERA
-void APIServerConnection::on_camera_image_request(const CameraImageRequest &msg) { this->camera_image(msg); }
-#endif
-#ifdef USE_CLIMATE
-void APIServerConnection::on_climate_command_request(const ClimateCommandRequest &msg) { this->climate_command(msg); }
-#endif
-#ifdef USE_COVER
-void APIServerConnection::on_cover_command_request(const CoverCommandRequest &msg) { this->cover_command(msg); }
-#endif
-#ifdef USE_DATETIME_DATE
-void APIServerConnection::on_date_command_request(const DateCommandRequest &msg) { this->date_command(msg); }
-#endif
-#ifdef USE_DATETIME_DATETIME
-void APIServerConnection::on_date_time_command_request(const DateTimeCommandRequest &msg) {
-  this->datetime_command(msg);
-}
-#endif
-#ifdef USE_FAN
-void APIServerConnection::on_fan_command_request(const FanCommandRequest &msg) { this->fan_command(msg); }
-#endif
-#ifdef USE_LIGHT
-void APIServerConnection::on_light_command_request(const LightCommandRequest &msg) { this->light_command(msg); }
-#endif
-#ifdef USE_LOCK
-void APIServerConnection::on_lock_command_request(const LockCommandRequest &msg) { this->lock_command(msg); }
-#endif
-#ifdef USE_MEDIA_PLAYER
-void APIServerConnection::on_media_player_command_request(const MediaPlayerCommandRequest &msg) {
-  this->media_player_command(msg);
-}
-#endif
-#ifdef USE_NUMBER
-void APIServerConnection::on_number_command_request(const NumberCommandRequest &msg) { this->number_command(msg); }
-#endif
-#ifdef USE_SELECT
-void APIServerConnection::on_select_command_request(const SelectCommandRequest &msg) { this->select_command(msg); }
-#endif
-#ifdef USE_SIREN
-void APIServerConnection::on_siren_command_request(const SirenCommandRequest &msg) { this->siren_command(msg); }
-#endif
-#ifdef USE_SWITCH
-void APIServerConnection::on_switch_command_request(const SwitchCommandRequest &msg) { this->switch_command(msg); }
-#endif
-#ifdef USE_TEXT
-void APIServerConnection::on_text_command_request(const TextCommandRequest &msg) { this->text_command(msg); }
-#endif
-#ifdef USE_DATETIME_TIME
-void APIServerConnection::on_time_command_request(const TimeCommandRequest &msg) { this->time_command(msg); }
-#endif
-#ifdef USE_UPDATE
-void APIServerConnection::on_update_command_request(const UpdateCommandRequest &msg) { this->update_command(msg); }
-#endif
-#ifdef USE_VALVE
-void APIServerConnection::on_valve_command_request(const ValveCommandRequest &msg) { this->valve_command(msg); }
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-void APIServerConnection::on_subscribe_bluetooth_le_advertisements_request(
-    const SubscribeBluetoothLEAdvertisementsRequest &msg) {
-  this->subscribe_bluetooth_le_advertisements(msg);
-}
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-void APIServerConnection::on_bluetooth_device_request(const BluetoothDeviceRequest &msg) {
-  this->bluetooth_device_request(msg);
-}
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-void APIServerConnection::on_bluetooth_gatt_get_services_request(const BluetoothGATTGetServicesRequest &msg) {
-  this->bluetooth_gatt_get_services(msg);
-}
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-void APIServerConnection::on_bluetooth_gatt_read_request(const BluetoothGATTReadRequest &msg) {
-  this->bluetooth_gatt_read(msg);
-}
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-void APIServerConnection::on_bluetooth_gatt_write_request(const BluetoothGATTWriteRequest &msg) {
-  this->bluetooth_gatt_write(msg);
-}
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-void APIServerConnection::on_bluetooth_gatt_read_descriptor_request(const BluetoothGATTReadDescriptorRequest &msg) {
-  this->bluetooth_gatt_read_descriptor(msg);
-}
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-void APIServerConnection::on_bluetooth_gatt_write_descriptor_request(const BluetoothGATTWriteDescriptorRequest &msg) {
-  this->bluetooth_gatt_write_descriptor(msg);
-}
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-void APIServerConnection::on_bluetooth_gatt_notify_request(const BluetoothGATTNotifyRequest &msg) {
-  this->bluetooth_gatt_notify(msg);
-}
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-void APIServerConnection::on_subscribe_bluetooth_connections_free_request(
-    const SubscribeBluetoothConnectionsFreeRequest &msg) {
-  if (!this->send_subscribe_bluetooth_connections_free_response(msg)) {
-    this->on_fatal_error();
-  }
-}
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-void APIServerConnection::on_unsubscribe_bluetooth_le_advertisements_request(
-    const UnsubscribeBluetoothLEAdvertisementsRequest &msg) {
-  this->unsubscribe_bluetooth_le_advertisements(msg);
-}
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-void APIServerConnection::on_bluetooth_scanner_set_mode_request(const BluetoothScannerSetModeRequest &msg) {
-  this->bluetooth_scanner_set_mode(msg);
-}
-#endif
-#ifdef USE_VOICE_ASSISTANT
-void APIServerConnection::on_subscribe_voice_assistant_request(const SubscribeVoiceAssistantRequest &msg) {
-  this->subscribe_voice_assistant(msg);
-}
-#endif
-#ifdef USE_VOICE_ASSISTANT
-void APIServerConnection::on_voice_assistant_configuration_request(const VoiceAssistantConfigurationRequest &msg) {
-  if (!this->send_voice_assistant_get_configuration_response(msg)) {
-    this->on_fatal_error();
-  }
-}
-#endif
-#ifdef USE_VOICE_ASSISTANT
-void APIServerConnection::on_voice_assistant_set_configuration(const VoiceAssistantSetConfiguration &msg) {
-  this->voice_assistant_set_configuration(msg);
-}
-#endif
-#ifdef USE_ALARM_CONTROL_PANEL
-void APIServerConnection::on_alarm_control_panel_command_request(const AlarmControlPanelCommandRequest &msg) {
-  this->alarm_control_panel_command(msg);
-}
-#endif
-#ifdef USE_ZWAVE_PROXY
-void APIServerConnection::on_z_wave_proxy_frame(const ZWaveProxyFrame &msg) { this->zwave_proxy_frame(msg); }
-#endif
-#ifdef USE_ZWAVE_PROXY
-void APIServerConnection::on_z_wave_proxy_request(const ZWaveProxyRequest &msg) { this->zwave_proxy_request(msg); }
-#endif
-#ifdef USE_IR_RF
-void APIServerConnection::on_infrared_rf_transmit_raw_timings_request(const InfraredRFTransmitRawTimingsRequest &msg) {
-  this->infrared_rf_transmit_raw_timings(msg);
-}
-#endif
-
-void APIServerConnection::read_message(uint32_t msg_size, uint32_t msg_type, const uint8_t *msg_data) {
-  // Check authentication/connection requirements for messages
-  switch (msg_type) {
-    case HelloRequest::MESSAGE_TYPE:       // No setup required
-    case DisconnectRequest::MESSAGE_TYPE:  // No setup required
-    case PingRequest::MESSAGE_TYPE:        // No setup required
-      break;                               // Skip all checks for these messages
-    case DeviceInfoRequest::MESSAGE_TYPE:  // Connection setup only
-      if (!this->check_connection_setup_()) {
-        return;  // Connection not setup
-      }
-      break;
-    default:
-      // All other messages require authentication (which includes connection check)
-      if (!this->check_authenticated_()) {
-        return;  // Authentication failed
-      }
-      break;
-  }
-
-  // Call base implementation to process the message
-  APIServerConnectionBase::read_message(msg_size, msg_type, msg_data);
-}
-
 }  // namespace esphome::api

esphome/components/api/api_pb2_service.h

@@ -14,6 +14,7 @@ class APIServerConnectionBase : public ProtoService {
  protected:
   void log_send_message_(const char *name, const char *dump);
   void log_receive_message_(const LogString *name, const ProtoMessage &msg);
+  void log_receive_message_(const LogString *name);
 
  public:
 #endif
@@ -23,20 +24,20 @@ class APIServerConnectionBase : public ProtoService {
     DumpBuffer dump_buf;
     this->log_send_message_(msg.message_name(), msg.dump_to(dump_buf));
 #endif
-    return this->send_message_(msg, message_type);
+    return this->send_message_impl(msg, message_type);
   }
 
   virtual void on_hello_request(const HelloRequest &value){};
 
-  virtual void on_disconnect_request(const DisconnectRequest &value){};
-  virtual void on_disconnect_response(const DisconnectResponse &value){};
-  virtual void on_ping_request(const PingRequest &value){};
-  virtual void on_ping_response(const PingResponse &value){};
-  virtual void on_device_info_request(const DeviceInfoRequest &value){};
+  virtual void on_disconnect_request(){};
+  virtual void on_disconnect_response(){};
+  virtual void on_ping_request(){};
+  virtual void on_ping_response(){};
+  virtual void on_device_info_request(){};
 
-  virtual void on_list_entities_request(const ListEntitiesRequest &value){};
+  virtual void on_list_entities_request(){};
 
-  virtual void on_subscribe_states_request(const SubscribeStatesRequest &value){};
+  virtual void on_subscribe_states_request(){};
 
 #ifdef USE_COVER
   virtual void on_cover_command_request(const CoverCommandRequest &value){};
@@ -61,14 +62,14 @@ class APIServerConnectionBase : public ProtoService {
 #endif
 
 #ifdef USE_API_HOMEASSISTANT_SERVICES
-  virtual void on_subscribe_homeassistant_services_request(const SubscribeHomeassistantServicesRequest &value){};
+  virtual void on_subscribe_homeassistant_services_request(){};
 #endif
 
 #ifdef USE_API_HOMEASSISTANT_ACTION_RESPONSES
   virtual void on_homeassistant_action_response(const HomeassistantActionResponse &value){};
 #endif
 #ifdef USE_API_HOMEASSISTANT_STATES
-  virtual void on_subscribe_home_assistant_states_request(const SubscribeHomeAssistantStatesRequest &value){};
+  virtual void on_subscribe_home_assistant_states_request(){};
 #endif
 
 #ifdef USE_API_HOMEASSISTANT_STATES
@@ -147,12 +148,11 @@ class APIServerConnectionBase : public ProtoService {
 #endif
 
 #ifdef USE_BLUETOOTH_PROXY
-  virtual void on_subscribe_bluetooth_connections_free_request(const SubscribeBluetoothConnectionsFreeRequest &value){};
+  virtual void on_subscribe_bluetooth_connections_free_request(){};
 #endif
 
 #ifdef USE_BLUETOOTH_PROXY
-  virtual void on_unsubscribe_bluetooth_le_advertisements_request(
-      const UnsubscribeBluetoothLEAdvertisementsRequest &value){};
+  virtual void on_unsubscribe_bluetooth_le_advertisements_request(){};
 #endif
 
 #ifdef USE_BLUETOOTH_PROXY
@@ -228,266 +228,4 @@ class APIServerConnectionBase : public ProtoService {
   void read_message(uint32_t msg_size, uint32_t msg_type, const uint8_t *msg_data) override;
 };
 
-class APIServerConnection : public APIServerConnectionBase {
- public:
-  virtual bool send_hello_response(const HelloRequest &msg) = 0;
-  virtual bool send_disconnect_response(const DisconnectRequest &msg) = 0;
-  virtual bool send_ping_response(const PingRequest &msg) = 0;
-  virtual bool send_device_info_response(const DeviceInfoRequest &msg) = 0;
-  virtual void list_entities(const ListEntitiesRequest &msg) = 0;
-  virtual void subscribe_states(const SubscribeStatesRequest &msg) = 0;
-  virtual void subscribe_logs(const SubscribeLogsRequest &msg) = 0;
-#ifdef USE_API_HOMEASSISTANT_SERVICES
-  virtual void subscribe_homeassistant_services(const SubscribeHomeassistantServicesRequest &msg) = 0;
-#endif
-#ifdef USE_API_HOMEASSISTANT_STATES
-  virtual void subscribe_home_assistant_states(const SubscribeHomeAssistantStatesRequest &msg) = 0;
-#endif
-#ifdef USE_API_USER_DEFINED_ACTIONS
-  virtual void execute_service(const ExecuteServiceRequest &msg) = 0;
-#endif
-#ifdef USE_API_NOISE
-  virtual bool send_noise_encryption_set_key_response(const NoiseEncryptionSetKeyRequest &msg) = 0;
-#endif
-#ifdef USE_BUTTON
-  virtual void button_command(const ButtonCommandRequest &msg) = 0;
-#endif
-#ifdef USE_CAMERA
-  virtual void camera_image(const CameraImageRequest &msg) = 0;
-#endif
-#ifdef USE_CLIMATE
-  virtual void climate_command(const ClimateCommandRequest &msg) = 0;
-#endif
-#ifdef USE_COVER
-  virtual void cover_command(const CoverCommandRequest &msg) = 0;
-#endif
-#ifdef USE_DATETIME_DATE
-  virtual void date_command(const DateCommandRequest &msg) = 0;
-#endif
-#ifdef USE_DATETIME_DATETIME
-  virtual void datetime_command(const DateTimeCommandRequest &msg) = 0;
-#endif
-#ifdef USE_FAN
-  virtual void fan_command(const FanCommandRequest &msg) = 0;
-#endif
-#ifdef USE_LIGHT
-  virtual void light_command(const LightCommandRequest &msg) = 0;
-#endif
-#ifdef USE_LOCK
-  virtual void lock_command(const LockCommandRequest &msg) = 0;
-#endif
-#ifdef USE_MEDIA_PLAYER
-  virtual void media_player_command(const MediaPlayerCommandRequest &msg) = 0;
-#endif
-#ifdef USE_NUMBER
-  virtual void number_command(const NumberCommandRequest &msg) = 0;
-#endif
-#ifdef USE_SELECT
-  virtual void select_command(const SelectCommandRequest &msg) = 0;
-#endif
-#ifdef USE_SIREN
-  virtual void siren_command(const SirenCommandRequest &msg) = 0;
-#endif
-#ifdef USE_SWITCH
-  virtual void switch_command(const SwitchCommandRequest &msg) = 0;
-#endif
-#ifdef USE_TEXT
-  virtual void text_command(const TextCommandRequest &msg) = 0;
-#endif
-#ifdef USE_DATETIME_TIME
-  virtual void time_command(const TimeCommandRequest &msg) = 0;
-#endif
-#ifdef USE_UPDATE
-  virtual void update_command(const UpdateCommandRequest &msg) = 0;
-#endif
-#ifdef USE_VALVE
-  virtual void valve_command(const ValveCommandRequest &msg) = 0;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  virtual void subscribe_bluetooth_le_advertisements(const SubscribeBluetoothLEAdvertisementsRequest &msg) = 0;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  virtual void bluetooth_device_request(const BluetoothDeviceRequest &msg) = 0;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  virtual void bluetooth_gatt_get_services(const BluetoothGATTGetServicesRequest &msg) = 0;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  virtual void bluetooth_gatt_read(const BluetoothGATTReadRequest &msg) = 0;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  virtual void bluetooth_gatt_write(const BluetoothGATTWriteRequest &msg) = 0;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  virtual void bluetooth_gatt_read_descriptor(const BluetoothGATTReadDescriptorRequest &msg) = 0;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  virtual void bluetooth_gatt_write_descriptor(const BluetoothGATTWriteDescriptorRequest &msg) = 0;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  virtual void bluetooth_gatt_notify(const BluetoothGATTNotifyRequest &msg) = 0;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  virtual bool send_subscribe_bluetooth_connections_free_response(
-      const SubscribeBluetoothConnectionsFreeRequest &msg) = 0;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  virtual void unsubscribe_bluetooth_le_advertisements(const UnsubscribeBluetoothLEAdvertisementsRequest &msg) = 0;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  virtual void bluetooth_scanner_set_mode(const BluetoothScannerSetModeRequest &msg) = 0;
-#endif
-#ifdef USE_VOICE_ASSISTANT
-  virtual void subscribe_voice_assistant(const SubscribeVoiceAssistantRequest &msg) = 0;
-#endif
-#ifdef USE_VOICE_ASSISTANT
-  virtual bool send_voice_assistant_get_configuration_response(const VoiceAssistantConfigurationRequest &msg) = 0;
-#endif
-#ifdef USE_VOICE_ASSISTANT
-  virtual void voice_assistant_set_configuration(const VoiceAssistantSetConfiguration &msg) = 0;
-#endif
-#ifdef USE_ALARM_CONTROL_PANEL
-  virtual void alarm_control_panel_command(const AlarmControlPanelCommandRequest &msg) = 0;
-#endif
-#ifdef USE_ZWAVE_PROXY
-  virtual void zwave_proxy_frame(const ZWaveProxyFrame &msg) = 0;
-#endif
-#ifdef USE_ZWAVE_PROXY
-  virtual void zwave_proxy_request(const ZWaveProxyRequest &msg) = 0;
-#endif
-#ifdef USE_IR_RF
-  virtual void infrared_rf_transmit_raw_timings(const InfraredRFTransmitRawTimingsRequest &msg) = 0;
-#endif
- protected:
-  void on_hello_request(const HelloRequest &msg) override;
-  void on_disconnect_request(const DisconnectRequest &msg) override;
-  void on_ping_request(const PingRequest &msg) override;
-  void on_device_info_request(const DeviceInfoRequest &msg) override;
-  void on_list_entities_request(const ListEntitiesRequest &msg) override;
-  void on_subscribe_states_request(const SubscribeStatesRequest &msg) override;
-  void on_subscribe_logs_request(const SubscribeLogsRequest &msg) override;
-#ifdef USE_API_HOMEASSISTANT_SERVICES
-  void on_subscribe_homeassistant_services_request(const SubscribeHomeassistantServicesRequest &msg) override;
-#endif
-#ifdef USE_API_HOMEASSISTANT_STATES
-  void on_subscribe_home_assistant_states_request(const SubscribeHomeAssistantStatesRequest &msg) override;
-#endif
-#ifdef USE_API_USER_DEFINED_ACTIONS
-  void on_execute_service_request(const ExecuteServiceRequest &msg) override;
-#endif
-#ifdef USE_API_NOISE
-  void on_noise_encryption_set_key_request(const NoiseEncryptionSetKeyRequest &msg) override;
-#endif
-#ifdef USE_BUTTON
-  void on_button_command_request(const ButtonCommandRequest &msg) override;
-#endif
-#ifdef USE_CAMERA
-  void on_camera_image_request(const CameraImageRequest &msg) override;
-#endif
-#ifdef USE_CLIMATE
-  void on_climate_command_request(const ClimateCommandRequest &msg) override;
-#endif
-#ifdef USE_COVER
-  void on_cover_command_request(const CoverCommandRequest &msg) override;
-#endif
-#ifdef USE_DATETIME_DATE
-  void on_date_command_request(const DateCommandRequest &msg) override;
-#endif
-#ifdef USE_DATETIME_DATETIME
-  void on_date_time_command_request(const DateTimeCommandRequest &msg) override;
-#endif
-#ifdef USE_FAN
-  void on_fan_command_request(const FanCommandRequest &msg) override;
-#endif
-#ifdef USE_LIGHT
-  void on_light_command_request(const LightCommandRequest &msg) override;
-#endif
-#ifdef USE_LOCK
-  void on_lock_command_request(const LockCommandRequest &msg) override;
-#endif
-#ifdef USE_MEDIA_PLAYER
-  void on_media_player_command_request(const MediaPlayerCommandRequest &msg) override;
-#endif
-#ifdef USE_NUMBER
-  void on_number_command_request(const NumberCommandRequest &msg) override;
-#endif
-#ifdef USE_SELECT
-  void on_select_command_request(const SelectCommandRequest &msg) override;
-#endif
-#ifdef USE_SIREN
-  void on_siren_command_request(const SirenCommandRequest &msg) override;
-#endif
-#ifdef USE_SWITCH
-  void on_switch_command_request(const SwitchCommandRequest &msg) override;
-#endif
-#ifdef USE_TEXT
-  void on_text_command_request(const TextCommandRequest &msg) override;
-#endif
-#ifdef USE_DATETIME_TIME
-  void on_time_command_request(const TimeCommandRequest &msg) override;
-#endif
-#ifdef USE_UPDATE
-  void on_update_command_request(const UpdateCommandRequest &msg) override;
-#endif
-#ifdef USE_VALVE
-  void on_valve_command_request(const ValveCommandRequest &msg) override;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  void on_subscribe_bluetooth_le_advertisements_request(const SubscribeBluetoothLEAdvertisementsRequest &msg) override;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  void on_bluetooth_device_request(const BluetoothDeviceRequest &msg) override;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  void on_bluetooth_gatt_get_services_request(const BluetoothGATTGetServicesRequest &msg) override;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  void on_bluetooth_gatt_read_request(const BluetoothGATTReadRequest &msg) override;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  void on_bluetooth_gatt_write_request(const BluetoothGATTWriteRequest &msg) override;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  void on_bluetooth_gatt_read_descriptor_request(const BluetoothGATTReadDescriptorRequest &msg) override;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  void on_bluetooth_gatt_write_descriptor_request(const BluetoothGATTWriteDescriptorRequest &msg) override;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  void on_bluetooth_gatt_notify_request(const BluetoothGATTNotifyRequest &msg) override;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  void on_subscribe_bluetooth_connections_free_request(const SubscribeBluetoothConnectionsFreeRequest &msg) override;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  void on_unsubscribe_bluetooth_le_advertisements_request(
-      const UnsubscribeBluetoothLEAdvertisementsRequest &msg) override;
-#endif
-#ifdef USE_BLUETOOTH_PROXY
-  void on_bluetooth_scanner_set_mode_request(const BluetoothScannerSetModeRequest &msg) override;
-#endif
-#ifdef USE_VOICE_ASSISTANT
-  void on_subscribe_voice_assistant_request(const SubscribeVoiceAssistantRequest &msg) override;
-#endif
-#ifdef USE_VOICE_ASSISTANT
-  void on_voice_assistant_configuration_request(const VoiceAssistantConfigurationRequest &msg) override;
-#endif
-#ifdef USE_VOICE_ASSISTANT
-  void on_voice_assistant_set_configuration(const VoiceAssistantSetConfiguration &msg) override;
-#endif
-#ifdef USE_ALARM_CONTROL_PANEL
-  void on_alarm_control_panel_command_request(const AlarmControlPanelCommandRequest &msg) override;
-#endif
-#ifdef USE_ZWAVE_PROXY
-  void on_z_wave_proxy_frame(const ZWaveProxyFrame &msg) override;
-#endif
-#ifdef USE_ZWAVE_PROXY
-  void on_z_wave_proxy_request(const ZWaveProxyRequest &msg) override;
-#endif
-#ifdef USE_IR_RF
-  void on_infrared_rf_transmit_raw_timings_request(const InfraredRFTransmitRawTimingsRequest &msg) override;
-#endif
-  void read_message(uint32_t msg_size, uint32_t msg_type, const uint8_t *msg_data) override;
-};
-
 }  // namespace esphome::api

esphome/components/api/api_server.cpp

@@ -28,10 +28,12 @@ static const char *const TAG = "api";
 // APIServer
 APIServer *global_api_server = nullptr;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 
-APIServer::APIServer() {
-  global_api_server = this;
-  // Pre-allocate shared write buffer
-  shared_write_buffer_.reserve(64);
+APIServer::APIServer() { global_api_server = this; }
+
+void APIServer::socket_failed_(const LogString *msg) {
+  ESP_LOGW(TAG, "Socket %s: errno %d", LOG_STR_ARG(msg), errno);
+  this->destroy_socket_();
+  this->mark_failed();
 }
 
 void APIServer::setup() {
@@ -52,22 +54,20 @@ void APIServer::setup() {
 #endif
 #endif
 
-  this->socket_ = socket::socket_ip_loop_monitored(SOCK_STREAM, 0);  // monitored for incoming connections
+  this->socket_ = socket::socket_ip_loop_monitored(SOCK_STREAM, 0).release();  // monitored for incoming connections
   if (this->socket_ == nullptr) {
-    ESP_LOGW(TAG, "Could not create socket");
-    this->mark_failed();
+    this->socket_failed_(LOG_STR("creation"));
     return;
   }
   int enable = 1;
   int err = this->socket_->setsockopt(SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int));
   if (err != 0) {
-    ESP_LOGW(TAG, "Socket unable to set reuseaddr: errno %d", err);
+    ESP_LOGW(TAG, "Socket reuseaddr: errno %d", errno);
     // we can still continue
   }
   err = this->socket_->setblocking(false);
   if (err != 0) {
-    ESP_LOGW(TAG, "Socket unable to set nonblocking mode: errno %d", err);
-    this->mark_failed();
+    this->socket_failed_(LOG_STR("nonblocking"));
     return;
   }
 
@@ -75,28 +75,28 @@ void APIServer::setup() {
 
   socklen_t sl = socket::set_sockaddr_any((struct sockaddr *) &server, sizeof(server), this->port_);
   if (sl == 0) {
-    ESP_LOGW(TAG, "Socket unable to set sockaddr: errno %d", errno);
-    this->mark_failed();
+    this->socket_failed_(LOG_STR("set sockaddr"));
     return;
   }
 
   err = this->socket_->bind((struct sockaddr *) &server, sl);
   if (err != 0) {
-    ESP_LOGW(TAG, "Socket unable to bind: errno %d", errno);
-    this->mark_failed();
+    this->socket_failed_(LOG_STR("bind"));
     return;
   }
 
   err = this->socket_->listen(this->listen_backlog_);
   if (err != 0) {
-    ESP_LOGW(TAG, "Socket unable to listen: errno %d", errno);
-    this->mark_failed();
+    this->socket_failed_(LOG_STR("listen"));
     return;
   }
 
 #ifdef USE_LOGGER
   if (logger::global_logger != nullptr) {
-    logger::global_logger->add_log_listener(this);
+    logger::global_logger->add_log_callback(
+        this, [](void *self, uint8_t level, const char *tag, const char *message, size_t message_len) {
+          static_cast<APIServer *>(self)->on_log(level, tag, message, message_len);
+        });
   }
 #endif
 
@@ -117,37 +117,7 @@ void APIServer::setup() {
 void APIServer::loop() {
   // Accept new clients only if the socket exists and has incoming connections
   if (this->socket_ && this->socket_->ready()) {
-    while (true) {
-      struct sockaddr_storage source_addr;
-      socklen_t addr_len = sizeof(source_addr);
-
-      auto sock = this->socket_->accept_loop_monitored((struct sockaddr *) &source_addr, &addr_len);
-      if (!sock)
-        break;
-
-      char peername[socket::SOCKADDR_STR_LEN];
-      sock->getpeername_to(peername);
-
-      // Check if we're at the connection limit
-      if (this->clients_.size() >= this->max_connections_) {
-        ESP_LOGW(TAG, "Max connections (%d), rejecting %s", this->max_connections_, peername);
-        // Immediately close - socket destructor will handle cleanup
-        sock.reset();
-        continue;
-      }
-
-      ESP_LOGD(TAG, "Accept %s", peername);
-
-      auto *conn = new APIConnection(std::move(sock), this);
-      this->clients_.emplace_back(conn);
-      conn->start();
-
-      // First client connected - clear warning and update timestamp
-      if (this->clients_.size() == 1 && this->reboot_timeout_ != 0) {
-        this->status_clear_warning();
-        this->last_connected_ = App.get_loop_component_start_time();
-      }
-    }
+    this->accept_new_connections_();
   }
 
   if (this->clients_.empty()) {
@@ -178,42 +148,88 @@ void APIServer::loop() {
   while (client_index < this->clients_.size()) {
     auto &client = this->clients_[client_index];
 
+    // Common case: process active client
     if (!client->flags_.remove) {
-      // Common case: process active client
       client->loop();
+    }
+    // Handle disconnection promptly - close socket to free LWIP PCB
+    // resources and prevent retransmit crashes on ESP8266.
+    if (client->flags_.remove) {
+      // Rare case: handle disconnection (don't increment - swapped element needs processing)
+      this->remove_client_(client_index);
+    } else {
       client_index++;
+    }
+  }
+}
+
+void APIServer::remove_client_(size_t client_index) {
+  auto &client = this->clients_[client_index];
+
+#ifdef USE_API_USER_DEFINED_ACTION_RESPONSES
+  this->unregister_active_action_calls_for_connection(client.get());
+#endif
+  ESP_LOGV(TAG, "Remove connection %s", client->get_name());
+
+#ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
+  // Save client info before closing socket and removal for the trigger
+  char peername_buf[socket::SOCKADDR_STR_LEN];
+  std::string client_name(client->get_name());
+  std::string client_peername(client->get_peername_to(peername_buf));
+#endif
+
+  // Close socket now (was deferred from on_fatal_error to allow getpeername)
+  client->helper_->close();
+
+  // Swap with the last element and pop (avoids expensive vector shifts)
+  if (client_index < this->clients_.size() - 1) {
+    std::swap(this->clients_[client_index], this->clients_.back());
+  }
+  this->clients_.pop_back();
+
+  // Last client disconnected - set warning and start tracking for reboot timeout
+  if (this->clients_.empty() && this->reboot_timeout_ != 0) {
+    this->status_set_warning();
+    this->last_connected_ = App.get_loop_component_start_time();
+  }
+
+#ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
+  // Fire trigger after client is removed so api.connected reflects the true state
+  this->client_disconnected_trigger_.trigger(client_name, client_peername);
+#endif
+}
+
+void __attribute__((flatten)) APIServer::accept_new_connections_() {
+  while (true) {
+    struct sockaddr_storage source_addr;
+    socklen_t addr_len = sizeof(source_addr);
+
+    auto sock = this->socket_->accept_loop_monitored((struct sockaddr *) &source_addr, &addr_len);
+    if (!sock)
+      break;
+
+    char peername[socket::SOCKADDR_STR_LEN];
+    sock->getpeername_to(peername);
+
+    // Check if we're at the connection limit
+    if (this->clients_.size() >= this->max_connections_) {
+      ESP_LOGW(TAG, "Max connections (%d), rejecting %s", this->max_connections_, peername);
+      // Immediately close - socket destructor will handle cleanup
+      sock.reset();
       continue;
     }
 
-    // Rare case: handle disconnection
-#ifdef USE_API_USER_DEFINED_ACTION_RESPONSES
-    this->unregister_active_action_calls_for_connection(client.get());
-#endif
-    ESP_LOGV(TAG, "Remove connection %s", client->get_name());
+    ESP_LOGD(TAG, "Accept %s", peername);
 
-#ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
-    // Save client info before removal for the trigger
-    std::string client_name(client->get_name());
-    std::string client_peername(client->get_peername());
-#endif
+    auto *conn = new APIConnection(std::move(sock), this);
+    this->clients_.emplace_back(conn);
+    conn->start();
 
-    // Swap with the last element and pop (avoids expensive vector shifts)
-    if (client_index < this->clients_.size() - 1) {
-      std::swap(this->clients_[client_index], this->clients_.back());
-    }
-    this->clients_.pop_back();
-
-    // Last client disconnected - set warning and start tracking for reboot timeout
-    if (this->clients_.empty() && this->reboot_timeout_ != 0) {
-      this->status_set_warning();
+    // First client connected - clear warning and update timestamp
+    if (this->clients_.size() == 1 && this->reboot_timeout_ != 0) {
+      this->status_clear_warning();
       this->last_connected_ = App.get_loop_component_start_time();
     }
-
-#ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
-    // Fire trigger after client is removed so api.connected reflects the true state
-    this->client_disconnected_trigger_->trigger(client_name, client_peername);
-#endif
-    // Don't increment client_index since we need to process the swapped element
   }
 }
 
@@ -607,10 +623,7 @@ void APIServer::on_shutdown() {
   this->shutting_down_ = true;
 
   // Close the listening socket to prevent new connections
-  if (this->socket_) {
-    this->socket_->close();
-    this->socket_ = nullptr;
-  }
+  this->destroy_socket_();
 
   // Change batch delay to 5ms for quick flushing during shutdown
   this->batch_delay_ = 5;

esphome/components/api/api_server.h

@@ -37,10 +37,6 @@ struct SavedNoisePsk {
 
 class APIServer : public Component,
                   public Controller
-#ifdef USE_LOGGER
-    ,
-                  public logger::LogListener
-#endif
 #ifdef USE_CAMERA
     ,
                   public camera::CameraListener
@@ -56,7 +52,7 @@ class APIServer : public Component,
   void on_shutdown() override;
   bool teardown() override;
 #ifdef USE_LOGGER
-  void on_log(uint8_t level, const char *tag, const char *message, size_t message_len) override;
+  void on_log(uint8_t level, const char *tag, const char *message, size_t message_len);
 #endif
 #ifdef USE_CAMERA
   void on_camera_image(const std::shared_ptr<camera::CameraImage> &image) override;
@@ -227,15 +223,18 @@ class APIServer : public Component,
 #endif
 
 #ifdef USE_API_CLIENT_CONNECTED_TRIGGER
-  Trigger<std::string, std::string> *get_client_connected_trigger() const { return this->client_connected_trigger_; }
+  Trigger<std::string, std::string> *get_client_connected_trigger() { return &this->client_connected_trigger_; }
 #endif
 #ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
-  Trigger<std::string, std::string> *get_client_disconnected_trigger() const {
-    return this->client_disconnected_trigger_;
-  }
+  Trigger<std::string, std::string> *get_client_disconnected_trigger() { return &this->client_disconnected_trigger_; }
 #endif
 
  protected:
+  // Accept incoming socket connections. Only called when socket has pending connections.
+  void __attribute__((noinline)) accept_new_connections_();
+  // Remove a disconnected client by index. Swaps with last element and pops.
+  void __attribute__((noinline)) remove_client_(size_t client_index);
+
 #ifdef USE_API_NOISE
   bool update_noise_psk_(const SavedNoisePsk &new_psk, const LogString *save_log_msg, const LogString *fail_log_msg,
                          const psk_t &active_psk, bool make_active);
@@ -250,13 +249,20 @@ class APIServer : public Component,
   void add_state_subscription_(std::string entity_id, optional<std::string> attribute,
                                std::function<void(const std::string &)> f, bool once);
 #endif  // USE_API_HOMEASSISTANT_STATES
+  // No explicit close() needed — listen sockets have no active connections on
+  // failure/shutdown. Destructor handles fd cleanup (close or abort per platform).
+  inline void destroy_socket_() {
+    delete this->socket_;
+    this->socket_ = nullptr;
+  }
+  void socket_failed_(const LogString *msg);
   // Pointers and pointer-like types first (4 bytes each)
-  std::unique_ptr<socket::Socket> socket_ = nullptr;
+  socket::Socket *socket_{nullptr};
 #ifdef USE_API_CLIENT_CONNECTED_TRIGGER
-  Trigger<std::string, std::string> *client_connected_trigger_ = new Trigger<std::string, std::string>();
+  Trigger<std::string, std::string> client_connected_trigger_;
 #endif
 #ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
-  Trigger<std::string, std::string> *client_disconnected_trigger_ = new Trigger<std::string, std::string>();
+  Trigger<std::string, std::string> client_disconnected_trigger_;
 #endif
 
   // 4-byte aligned types
@@ -265,7 +271,11 @@ class APIServer : public Component,
 
   // Vectors and strings (12 bytes each on 32-bit)
   std::vector<std::unique_ptr<APIConnection>> clients_;
-  std::vector<uint8_t> shared_write_buffer_;  // Shared proto write buffer for all connections
+  // Shared proto write buffer for all connections.
+  // Not pre-allocated: all send paths call prepare_first_message_buffer() which
+  // reserves the exact needed size. Pre-allocating here would cause heap fragmentation
+  // since the buffer would almost always reallocate on first use.
+  std::vector<uint8_t> shared_write_buffer_;
 #ifdef USE_API_HOMEASSISTANT_STATES
   std::vector<HomeAssistantStateSubscription> state_subs_;
 #endif

esphome/components/api/homeassistant_service.h

@@ -25,7 +25,9 @@ template<typename... X> class TemplatableStringValue : public TemplatableValue<s
 
  private:
   // Helper to convert value to string - handles the case where value is already a string
-  template<typename T> static std::string value_to_string(T &&val) { return to_string(std::forward<T>(val)); }
+  template<typename T> static std::string value_to_string(T &&val) {
+    return to_string(std::forward<T>(val));  // NOLINT
+  }
 
   // Overloads for string types - needed because std::to_string doesn't support them
   static std::string value_to_string(char *val) {
@@ -34,6 +36,8 @@ template<typename... X> class TemplatableStringValue : public TemplatableValue<s
   static std::string value_to_string(const char *val) { return std::string(val); }  // For lambdas returning .c_str()
   static std::string value_to_string(const std::string &val) { return val; }
   static std::string value_to_string(std::string &&val) { return std::move(val); }
+  static std::string value_to_string(const StringRef &val) { return val.str(); }
+  static std::string value_to_string(StringRef &&val) { return val.str(); }
 
  public:
   TemplatableStringValue() : TemplatableValue<std::string, X...>() {}
@@ -136,12 +140,10 @@ template<typename... Ts> class HomeAssistantServiceCallAction : public Action<Ts
   void set_wants_response() { this->flags_.wants_response = true; }
 
 #ifdef USE_API_HOMEASSISTANT_ACTION_RESPONSES_JSON
-  Trigger<JsonObjectConst, Ts...> *get_success_trigger_with_response() const {
-    return this->success_trigger_with_response_;
-  }
+  Trigger<JsonObjectConst, Ts...> *get_success_trigger_with_response() { return &this->success_trigger_with_response_; }
 #endif
-  Trigger<Ts...> *get_success_trigger() const { return this->success_trigger_; }
-  Trigger<std::string, Ts...> *get_error_trigger() const { return this->error_trigger_; }
+  Trigger<Ts...> *get_success_trigger() { return &this->success_trigger_; }
+  Trigger<std::string, Ts...> *get_error_trigger() { return &this->error_trigger_; }
 #endif  // USE_API_HOMEASSISTANT_ACTION_RESPONSES
 
   void play(const Ts &...x) override {
@@ -187,14 +189,14 @@ template<typename... Ts> class HomeAssistantServiceCallAction : public Action<Ts
               if (response.is_success()) {
 #ifdef USE_API_HOMEASSISTANT_ACTION_RESPONSES_JSON
                 if (this->flags_.wants_response) {
-                  this->success_trigger_with_response_->trigger(response.get_json(), args...);
+                  this->success_trigger_with_response_.trigger(response.get_json(), args...);
                 } else
 #endif
                 {
-                  this->success_trigger_->trigger(args...);
+                  this->success_trigger_.trigger(args...);
                 }
               } else {
-                this->error_trigger_->trigger(response.get_error_message(), args...);
+                this->error_trigger_.trigger(response.get_error_message(), args...);
               }
             },
             captured_args);
@@ -251,10 +253,10 @@ template<typename... Ts> class HomeAssistantServiceCallAction : public Action<Ts
 #ifdef USE_API_HOMEASSISTANT_ACTION_RESPONSES
 #ifdef USE_API_HOMEASSISTANT_ACTION_RESPONSES_JSON
   TemplatableStringValue<Ts...> response_template_{""};
-  Trigger<JsonObjectConst, Ts...> *success_trigger_with_response_ = new Trigger<JsonObjectConst, Ts...>();
+  Trigger<JsonObjectConst, Ts...> success_trigger_with_response_;
 #endif  // USE_API_HOMEASSISTANT_ACTION_RESPONSES_JSON
-  Trigger<Ts...> *success_trigger_ = new Trigger<Ts...>();
-  Trigger<std::string, Ts...> *error_trigger_ = new Trigger<std::string, Ts...>();
+  Trigger<Ts...> success_trigger_;
+  Trigger<std::string, Ts...> error_trigger_;
 #endif  // USE_API_HOMEASSISTANT_ACTION_RESPONSES
 
   struct Flags {

esphome/components/api/list_entities.h

@@ -94,7 +94,6 @@ class ListEntitiesIterator : public ComponentIterator {
   bool on_update(update::UpdateEntity *entity) override;
 #endif
   bool on_end() override;
-  bool completed() { return this->state_ == IteratorState::NONE; }
 
  protected:
   APIConnection *client_;

esphome/components/api/proto.cpp

@@ -70,6 +70,21 @@ uint32_t ProtoDecodableMessage::count_repeated_field(const uint8_t *buffer, size
   return count;
 }
 
+#ifdef ESPHOME_DEBUG_API
+void ProtoWriteBuffer::debug_check_bounds_(size_t bytes, const char *caller) {
+  if (this->pos_ + bytes > this->buffer_->data() + this->buffer_->size()) {
+    ESP_LOGE(TAG, "ProtoWriteBuffer bounds check failed in %s: bytes=%zu offset=%td buf_size=%zu", caller, bytes,
+             this->pos_ - this->buffer_->data(), this->buffer_->size());
+    abort();
+  }
+}
+void ProtoWriteBuffer::debug_check_encode_size_(uint32_t field_id, uint32_t expected, ptrdiff_t actual) {
+  ESP_LOGE(TAG, "encode_message: size mismatch for field %" PRIu32 ": calculated=%" PRIu32 " actual=%td", field_id,
+           expected, actual);
+  abort();
+}
+#endif
+
 void ProtoDecodableMessage::decode(const uint8_t *buffer, size_t length) {
   const uint8_t *ptr = buffer;
   const uint8_t *end = buffer + length;
@@ -133,7 +148,7 @@ void ProtoDecodableMessage::decode(const uint8_t *buffer, size_t length) {
         break;
       }
       default:
-        ESP_LOGV(TAG, "Invalid field type %u at offset %ld", field_type, (long) (ptr - buffer));
+        ESP_LOGV(TAG, "Invalid field type %" PRIu32 " at offset %ld", field_type, (long) (ptr - buffer));
         return;
     }
   }

esphome/components/api/proto.h

@@ -57,6 +57,16 @@ inline uint16_t count_packed_varints(const uint8_t *data, size_t len) {
   return count;
 }
 
+/// Encode a varint directly into a pre-allocated buffer.
+/// Caller must ensure buffer has space (use ProtoSize::varint() to calculate).
+inline void encode_varint_to_buffer(uint32_t val, uint8_t *buffer) {
+  while (val > 0x7F) {
+    *buffer++ = static_cast<uint8_t>(val | 0x80);
+    val >>= 7;
+  }
+  *buffer = static_cast<uint8_t>(val);
+}
+
 /*
  * StringRef Ownership Model for API Protocol Messages
  * ===================================================
@@ -93,17 +103,17 @@ class ProtoVarInt {
   ProtoVarInt() : value_(0) {}
   explicit ProtoVarInt(uint64_t value) : value_(value) {}
 
+  /// Parse a varint from buffer. consumed must be a valid pointer (not null).
   static optional<ProtoVarInt> parse(const uint8_t *buffer, uint32_t len, uint32_t *consumed) {
-    if (len == 0) {
-      if (consumed != nullptr)
-        *consumed = 0;
+#ifdef ESPHOME_DEBUG_API
+    assert(consumed != nullptr);
+#endif
+    if (len == 0)
       return {};
-    }
 
     // Most common case: single-byte varint (values 0-127)
     if ((buffer[0] & 0x80) == 0) {
-      if (consumed != nullptr)
-        *consumed = 1;
+      *consumed = 1;
       return ProtoVarInt(buffer[0]);
     }
 
@@ -112,20 +122,21 @@ class ProtoVarInt {
     uint64_t result = buffer[0] & 0x7F;
     uint8_t bitpos = 7;
 
+    // A 64-bit varint is at most 10 bytes (ceil(64/7)). Reject overlong encodings
+    // to avoid undefined behavior from shifting uint64_t by >= 64 bits.
+    uint32_t max_len = std::min(len, uint32_t(10));
+
     // Start from the second byte since we've already processed the first
-    for (uint32_t i = 1; i < len; i++) {
+    for (uint32_t i = 1; i < max_len; i++) {
       uint8_t val = buffer[i];
       result |= uint64_t(val & 0x7F) << uint64_t(bitpos);
       bitpos += 7;
       if ((val & 0x80) == 0) {
-        if (consumed != nullptr)
-          *consumed = i + 1;
+        *consumed = i + 1;
         return ProtoVarInt(result);
       }
     }
 
-    if (consumed != nullptr)
-      *consumed = 0;
     return {};  // Incomplete or invalid varint
   }
 
@@ -149,50 +160,6 @@ class ProtoVarInt {
     // with ZigZag encoding
     return decode_zigzag64(this->value_);
   }
-  /**
-   * Encode the varint value to a pre-allocated buffer without bounds checking.
-   *
-   * @param buffer The pre-allocated buffer to write the encoded varint to
-   * @param len The size of the buffer in bytes
-   *
-   * @note The caller is responsible for ensuring the buffer is large enough
-   *       to hold the encoded value. Use ProtoSize::varint() to calculate
-   *       the exact size needed before calling this method.
-   * @note No bounds checking is performed for performance reasons.
-   */
-  void encode_to_buffer_unchecked(uint8_t *buffer, size_t len) {
-    uint64_t val = this->value_;
-    if (val <= 0x7F) {
-      buffer[0] = val;
-      return;
-    }
-    size_t i = 0;
-    while (val && i < len) {
-      uint8_t temp = val & 0x7F;
-      val >>= 7;
-      if (val) {
-        buffer[i++] = temp | 0x80;
-      } else {
-        buffer[i++] = temp;
-      }
-    }
-  }
-  void encode(std::vector<uint8_t> &out) {
-    uint64_t val = this->value_;
-    if (val <= 0x7F) {
-      out.push_back(val);
-      return;
-    }
-    while (val) {
-      uint8_t temp = val & 0x7F;
-      val >>= 7;
-      if (val) {
-        out.push_back(temp | 0x80);
-      } else {
-        out.push_back(temp);
-      }
-    }
-  }
 
  protected:
   uint64_t value_;
@@ -250,10 +217,27 @@ class Proto32Bit {
 
 class ProtoWriteBuffer {
  public:
-  ProtoWriteBuffer(std::vector<uint8_t> *buffer) : buffer_(buffer) {}
-  void write(uint8_t value) { this->buffer_->push_back(value); }
-  void encode_varint_raw(ProtoVarInt value) { value.encode(*this->buffer_); }
-  void encode_varint_raw(uint32_t value) { this->encode_varint_raw(ProtoVarInt(value)); }
+  ProtoWriteBuffer(std::vector<uint8_t> *buffer) : buffer_(buffer), pos_(buffer->data() + buffer->size()) {}
+  ProtoWriteBuffer(std::vector<uint8_t> *buffer, size_t write_pos)
+      : buffer_(buffer), pos_(buffer->data() + write_pos) {}
+  void encode_varint_raw(uint32_t value) {
+    while (value > 0x7F) {
+      this->debug_check_bounds_(1);
+      *this->pos_++ = static_cast<uint8_t>(value | 0x80);
+      value >>= 7;
+    }
+    this->debug_check_bounds_(1);
+    *this->pos_++ = static_cast<uint8_t>(value);
+  }
+  void encode_varint_raw_64(uint64_t value) {
+    while (value > 0x7F) {
+      this->debug_check_bounds_(1);
+      *this->pos_++ = static_cast<uint8_t>(value | 0x80);
+      value >>= 7;
+    }
+    this->debug_check_bounds_(1);
+    *this->pos_++ = static_cast<uint8_t>(value);
+  }
   /**
    * Encode a field key (tag/wire type combination).
    *
@@ -266,23 +250,18 @@ class ProtoWriteBuffer {
    *
    * Following https://protobuf.dev/programming-guides/encoding/#structure
    */
-  void encode_field_raw(uint32_t field_id, uint32_t type) {
-    uint32_t val = (field_id << 3) | (type & WIRE_TYPE_MASK);
-    this->encode_varint_raw(val);
-  }
+  void encode_field_raw(uint32_t field_id, uint32_t type) { this->encode_varint_raw((field_id << 3) | type); }
   void encode_string(uint32_t field_id, const char *string, size_t len, bool force = false) {
     if (len == 0 && !force)
       return;
 
     this->encode_field_raw(field_id, 2);  // type 2: Length-delimited string
     this->encode_varint_raw(len);
-
-    // Using resize + memcpy instead of insert provides significant performance improvement:
-    // ~10-11x faster for 16-32 byte strings, ~3x faster for 64-byte strings
-    // as it avoids iterator checks and potential element moves that insert performs
-    size_t old_size = this->buffer_->size();
-    this->buffer_->resize(old_size + len);
-    std::memcpy(this->buffer_->data() + old_size, string, len);
+    // Direct memcpy into pre-sized buffer — avoids push_back() per-byte capacity checks
+    // and vector::insert() iterator overhead. ~10-11x faster for 16-32 byte strings.
+    this->debug_check_bounds_(len);
+    std::memcpy(this->pos_, string, len);
+    this->pos_ += len;
   }
   void encode_string(uint32_t field_id, const std::string &value, bool force = false) {
     this->encode_string(field_id, value.data(), value.size(), force);
@@ -303,23 +282,32 @@ class ProtoWriteBuffer {
     if (value == 0 && !force)
       return;
     this->encode_field_raw(field_id, 0);  // type 0: Varint - uint64
-    this->encode_varint_raw(ProtoVarInt(value));
+    this->encode_varint_raw_64(value);
   }
   void encode_bool(uint32_t field_id, bool value, bool force = false) {
     if (!value && !force)
       return;
     this->encode_field_raw(field_id, 0);  // type 0: Varint - bool
-    this->write(0x01);
+    this->debug_check_bounds_(1);
+    *this->pos_++ = value ? 0x01 : 0x00;
   }
-  void encode_fixed32(uint32_t field_id, uint32_t value, bool force = false) {
+  // noinline: 51 call sites; inlining causes net code growth vs a single out-of-line copy
+  __attribute__((noinline)) void encode_fixed32(uint32_t field_id, uint32_t value, bool force = false) {
     if (value == 0 && !force)
       return;
 
     this->encode_field_raw(field_id, 5);  // type 5: 32-bit fixed32
-    this->write((value >> 0) & 0xFF);
-    this->write((value >> 8) & 0xFF);
-    this->write((value >> 16) & 0xFF);
-    this->write((value >> 24) & 0xFF);
+    this->debug_check_bounds_(4);
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+    // Protobuf fixed32 is little-endian, so direct copy works
+    std::memcpy(this->pos_, &value, 4);
+    this->pos_ += 4;
+#else
+    *this->pos_++ = (value >> 0) & 0xFF;
+    *this->pos_++ = (value >> 8) & 0xFF;
+    *this->pos_++ = (value >> 16) & 0xFF;
+    *this->pos_++ = (value >> 24) & 0xFF;
+#endif
   }
   // NOTE: Wire type 1 (64-bit fixed: double, fixed64, sfixed64) is intentionally
   // not supported to reduce overhead on embedded systems. All ESPHome devices are
@@ -355,11 +343,20 @@ class ProtoWriteBuffer {
   }
   /// Encode a packed repeated sint32 field (zero-copy from vector)
   void encode_packed_sint32(uint32_t field_id, const std::vector<int32_t> &values);
-  void encode_message(uint32_t field_id, const ProtoMessage &value);
+  /// Encode a nested message field (force=true for repeated, false for singular)
+  void encode_message(uint32_t field_id, const ProtoMessage &value, bool force = true);
   std::vector<uint8_t> *get_buffer() const { return buffer_; }
 
  protected:
+#ifdef ESPHOME_DEBUG_API
+  void debug_check_bounds_(size_t bytes, const char *caller = __builtin_FUNCTION());
+  void debug_check_encode_size_(uint32_t field_id, uint32_t expected, ptrdiff_t actual);
+#else
+  void debug_check_bounds_([[maybe_unused]] size_t bytes) {}
+#endif
+
   std::vector<uint8_t> *buffer_;
+  uint8_t *pos_;
 };
 
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -402,6 +399,20 @@ class DumpBuffer {
   const char *c_str() const { return buf_; }
   size_t size() const { return pos_; }
 
+  /// Get writable buffer pointer for use with buf_append_printf
+  char *data() { return buf_; }
+  /// Get current position for use with buf_append_printf
+  size_t pos() const { return pos_; }
+  /// Update position after buf_append_printf call
+  void set_pos(size_t pos) {
+    if (pos >= CAPACITY) {
+      pos_ = CAPACITY - 1;
+    } else {
+      pos_ = pos;
+    }
+    buf_[pos_] = '\0';
+  }
+
  private:
   void append_impl_(const char *str, size_t len) {
     size_t space = CAPACITY - 1 - pos_;
@@ -423,9 +434,11 @@ class ProtoMessage {
  public:
   virtual ~ProtoMessage() = default;
   // Default implementation for messages with no fields
-  virtual void encode(ProtoWriteBuffer buffer) const {}
+  virtual void encode(ProtoWriteBuffer &buffer) const {}
   // Default implementation for messages with no fields
   virtual void calculate_size(ProtoSize &size) const {}
+  // Convenience: calculate and return size directly (defined after ProtoSize)
+  uint32_t calculated_size() const;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   virtual const char *dump_to(DumpBuffer &out) const = 0;
   virtual const char *message_name() const { return "unknown"; }
@@ -884,6 +897,14 @@ class ProtoSize {
   }
 };
 
+// Implementation of methods that depend on ProtoSize being fully defined
+
+inline uint32_t ProtoMessage::calculated_size() const {
+  ProtoSize size;
+  this->calculate_size(size);
+  return size.get_size();
+}
+
 // Implementation of encode_packed_sint32 - must be after ProtoSize is defined
 inline void ProtoWriteBuffer::encode_packed_sint32(uint32_t field_id, const std::vector<int32_t> &values) {
   if (values.empty())
@@ -904,29 +925,31 @@ inline void ProtoWriteBuffer::encode_packed_sint32(uint32_t field_id, const std:
 }
 
 // Implementation of encode_message - must be after ProtoMessage is defined
-inline void ProtoWriteBuffer::encode_message(uint32_t field_id, const ProtoMessage &value) {
-  this->encode_field_raw(field_id, 2);  // type 2: Length-delimited message
-
+inline void ProtoWriteBuffer::encode_message(uint32_t field_id, const ProtoMessage &value, bool force) {
   // Calculate the message size first
   ProtoSize msg_size;
   value.calculate_size(msg_size);
   uint32_t msg_length_bytes = msg_size.get_size();
 
-  // Calculate how many bytes the length varint needs
-  uint32_t varint_length_bytes = ProtoSize::varint(msg_length_bytes);
+  // Skip empty singular messages (matches add_message_field which skips when nested_size == 0)
+  // Repeated messages (force=true) are always encoded since an empty item is meaningful
+  if (msg_length_bytes == 0 && !force)
+    return;
 
-  // Reserve exact space for the length varint
-  size_t begin = this->buffer_->size();
-  this->buffer_->resize(this->buffer_->size() + varint_length_bytes);
+  this->encode_field_raw(field_id, 2);  // type 2: Length-delimited message
 
-  // Write the length varint directly
-  ProtoVarInt(msg_length_bytes).encode_to_buffer_unchecked(this->buffer_->data() + begin, varint_length_bytes);
+  // Write the length varint directly through pos_
+  this->encode_varint_raw(msg_length_bytes);
 
-  // Now encode the message content - it will append to the buffer
+  // Encode nested message - pos_ advances directly through the reference
+#ifdef ESPHOME_DEBUG_API
+  uint8_t *start = this->pos_;
   value.encode(*this);
-
-  // Verify that the encoded size matches what we calculated
-  assert(this->buffer_->size() == begin + varint_length_bytes + msg_length_bytes);
+  if (static_cast<uint32_t>(this->pos_ - start) != msg_length_bytes)
+    this->debug_check_encode_size_(field_id, msg_length_bytes, this->pos_ - start);
+#else
+  value.encode(*this);
+#endif
 }
 
 // Implementation of decode_to_message - must be after ProtoDecodableMessage is defined
@@ -943,32 +966,16 @@ class ProtoService {
   virtual bool is_connection_setup() = 0;
   virtual void on_fatal_error() = 0;
   virtual void on_no_setup_connection() = 0;
-  /**
-   * Create a buffer with a reserved size.
-   * @param reserve_size The number of bytes to pre-allocate in the buffer. This is a hint
-   *                     to optimize memory usage and avoid reallocations during encoding.
-   *                     Implementations should aim to allocate at least this size.
-   * @return A ProtoWriteBuffer object with the reserved size.
-   */
-  virtual ProtoWriteBuffer create_buffer(uint32_t reserve_size) = 0;
   virtual bool send_buffer(ProtoWriteBuffer buffer, uint8_t message_type) = 0;
   virtual void read_message(uint32_t msg_size, uint32_t msg_type, const uint8_t *msg_data) = 0;
-
-  // Optimized method that pre-allocates buffer based on message size
-  bool send_message_(const ProtoMessage &msg, uint8_t message_type) {
-    ProtoSize size;
-    msg.calculate_size(size);
-    uint32_t msg_size = size.get_size();
-
-    // Create a pre-sized buffer
-    auto buffer = this->create_buffer(msg_size);
-
-    // Encode message into the buffer
-    msg.encode(buffer);
-
-    // Send the buffer
-    return this->send_buffer(buffer, message_type);
-  }
+  /**
+   * Send a protobuf message by calculating its size, allocating a buffer, encoding, and sending.
+   * This is the implementation method - callers should use send_message() which adds logging.
+   * @param msg The protobuf message to send.
+   * @param message_type The message type identifier.
+   * @return True if the message was sent successfully, false otherwise.
+   */
+  virtual bool send_message_impl(const ProtoMessage &msg, uint8_t message_type) = 0;
 
   // Authentication helper methods
   inline bool check_connection_setup_() {

esphome/components/api/subscribe_state.h

@@ -88,7 +88,6 @@ class InitialStateIterator : public ComponentIterator {
 #ifdef USE_UPDATE
   bool on_update(update::UpdateEntity *entity) override;
 #endif
-  bool completed() { return this->state_ == IteratorState::NONE; }
 
  protected:
   APIConnection *client_;

esphome/components/api/user_services.h

@@ -264,9 +264,9 @@ template<typename... Ts> class APIRespondAction : public Action<Ts...> {
       // Build and send JSON response
       json::JsonBuilder builder;
       this->json_builder_(x..., builder.root());
-      std::string json_str = builder.serialize();
+      auto json_buf = builder.serialize();
       this->parent_->send_action_response(call_id, success, StringRef(error_message),
-                                          reinterpret_cast<const uint8_t *>(json_str.data()), json_str.size());
+                                          reinterpret_cast<const uint8_t *>(json_buf.data()), json_buf.size());
       return;
     }
 #endif

esphome/components/aqi/aqi_calculator.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <algorithm>
 #include <cmath>
 #include <limits>
 #include "abstract_aqi_calculator.h"
@@ -14,7 +15,11 @@ class AQICalculator : public AbstractAQICalculator {
     float pm2_5_index = calculate_index(pm2_5_value, PM2_5_GRID);
     float pm10_0_index = calculate_index(pm10_0_value, PM10_0_GRID);
 
-    return static_cast<uint16_t>(std::round((pm2_5_index < pm10_0_index) ? pm10_0_index : pm2_5_index));
+    float aqi = std::max(pm2_5_index, pm10_0_index);
+    if (aqi < 0.0f) {
+      aqi = 0.0f;
+    }
+    return static_cast<uint16_t>(std::lround(aqi));
   }
 
  protected:
@@ -22,13 +27,27 @@ class AQICalculator : public AbstractAQICalculator {
 
   static constexpr int INDEX_GRID[NUM_LEVELS][2] = {{0, 50}, {51, 100}, {101, 150}, {151, 200}, {201, 300}, {301, 500}};
 
-  static constexpr float PM2_5_GRID[NUM_LEVELS][2] = {{0.0f, 9.0f},     {9.1f, 35.4f},
-                                                      {35.5f, 55.4f},   {55.5f, 125.4f},
-                                                      {125.5f, 225.4f}, {225.5f, std::numeric_limits<float>::max()}};
+  static constexpr float PM2_5_GRID[NUM_LEVELS][2] = {
+      // clang-format off
+      {0.0f, 9.1f},
+      {9.1f, 35.5f},
+      {35.5f, 55.5f},
+      {55.5f, 125.5f},
+      {125.5f, 225.5f},
+      {225.5f, std::numeric_limits<float>::max()}
+      // clang-format on
+  };
 
-  static constexpr float PM10_0_GRID[NUM_LEVELS][2] = {{0.0f, 54.0f},    {55.0f, 154.0f},
-                                                       {155.0f, 254.0f}, {255.0f, 354.0f},
-                                                       {355.0f, 424.0f}, {425.0f, std::numeric_limits<float>::max()}};
+  static constexpr float PM10_0_GRID[NUM_LEVELS][2] = {
+      // clang-format off
+      {0.0f, 55.0f},
+      {55.0f, 155.0f},
+      {155.0f, 255.0f},
+      {255.0f, 355.0f},
+      {355.0f, 425.0f},
+      {425.0f, std::numeric_limits<float>::max()}
+      // clang-format on
+  };
 
   static float calculate_index(float value, const float array[NUM_LEVELS][2]) {
     int grid_index = get_grid_index(value, array);
@@ -45,7 +64,10 @@ class AQICalculator : public AbstractAQICalculator {
 
   static int get_grid_index(float value, const float array[NUM_LEVELS][2]) {
     for (int i = 0; i < NUM_LEVELS; i++) {
-      if (value >= array[i][0] && value <= array[i][1]) {
+      const bool in_range =
+          (value >= array[i][0]) && ((i == NUM_LEVELS - 1) ? (value <= array[i][1])   // last bucket inclusive
+                                                           : (value < array[i][1]));  // others exclusive on hi
+      if (in_range) {
         return i;
       }
     }

esphome/components/aqi/aqi_sensor.h

@@ -10,7 +10,6 @@ class AQISensor : public sensor::Sensor, public Component {
  public:
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
   void set_pm_2_5_sensor(sensor::Sensor *sensor) { this->pm_2_5_sensor_ = sensor; }
   void set_pm_10_0_sensor(sensor::Sensor *sensor) { this->pm_10_0_sensor_ = sensor; }

esphome/components/aqi/caqi_calculator.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <algorithm>
 #include <cmath>
 #include <limits>
 #include "abstract_aqi_calculator.h"
@@ -12,7 +13,11 @@ class CAQICalculator : public AbstractAQICalculator {
     float pm2_5_index = calculate_index(pm2_5_value, PM2_5_GRID);
     float pm10_0_index = calculate_index(pm10_0_value, PM10_0_GRID);
 
-    return static_cast<uint16_t>(std::round((pm2_5_index < pm10_0_index) ? pm10_0_index : pm2_5_index));
+    float aqi = std::max(pm2_5_index, pm10_0_index);
+    if (aqi < 0.0f) {
+      aqi = 0.0f;
+    }
+    return static_cast<uint16_t>(std::lround(aqi));
   }
 
  protected:
@@ -21,10 +26,24 @@ class CAQICalculator : public AbstractAQICalculator {
   static constexpr int INDEX_GRID[NUM_LEVELS][2] = {{0, 25}, {26, 50}, {51, 75}, {76, 100}, {101, 400}};
 
   static constexpr float PM2_5_GRID[NUM_LEVELS][2] = {
-      {0.0f, 15.0f}, {15.1f, 30.0f}, {30.1f, 55.0f}, {55.1f, 110.0f}, {110.1f, std::numeric_limits<float>::max()}};
+      // clang-format off
+      {0.0f, 15.1f},
+      {15.1f, 30.1f},
+      {30.1f, 55.1f},
+      {55.1f, 110.1f},
+      {110.1f, std::numeric_limits<float>::max()}
+      // clang-format on
+  };
 
   static constexpr float PM10_0_GRID[NUM_LEVELS][2] = {
-      {0.0f, 25.0f}, {25.1f, 50.0f}, {50.1f, 90.0f}, {90.1f, 180.0f}, {180.1f, std::numeric_limits<float>::max()}};
+      // clang-format off
+      {0.0f, 25.1f},
+      {25.1f, 50.1f},
+      {50.1f, 90.1f},
+      {90.1f, 180.1f},
+      {180.1f, std::numeric_limits<float>::max()}
+      // clang-format on
+  };
 
   static float calculate_index(float value, const float array[NUM_LEVELS][2]) {
     int grid_index = get_grid_index(value, array);
@@ -42,7 +61,10 @@ class CAQICalculator : public AbstractAQICalculator {
 
   static int get_grid_index(float value, const float array[NUM_LEVELS][2]) {
     for (int i = 0; i < NUM_LEVELS; i++) {
-      if (value >= array[i][0] && value <= array[i][1]) {
+      const bool in_range =
+          (value >= array[i][0]) && ((i == NUM_LEVELS - 1) ? (value <= array[i][1])   // last bucket inclusive
+                                                           : (value < array[i][1]));  // others exclusive on hi
+      if (in_range) {
         return i;
       }
     }

esphome/components/as3935/as3935.cpp

@@ -41,8 +41,6 @@ void AS3935Component::dump_config() {
 #endif
 }
 
-float AS3935Component::get_setup_priority() const { return setup_priority::DATA; }
-
 void AS3935Component::loop() {
   if (!this->irq_pin_->digital_read())
     return;
@@ -309,9 +307,9 @@ void AS3935Component::tune_antenna() {
   uint8_t tune_val = this->read_capacitance();
   ESP_LOGI(TAG,
            "Starting antenna tuning\n"
-           "Division Ratio is set to: %d\n"
-           "Internal Capacitor is set to: %d\n"
-           "Displaying oscillator on INT pin. Measure its frequency - multiply value by Division Ratio",
+           "  Division Ratio is set to: %d\n"
+           "  Internal Capacitor is set to: %d\n"
+           "  Displaying oscillator on INT pin. Measure its frequency - multiply value by Division Ratio",
            div_ratio, tune_val);
   this->display_oscillator(true, ANTFREQ);
 }

esphome/components/as3935/as3935.h

@@ -74,7 +74,6 @@ class AS3935Component : public Component {
  public:
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   void loop() override;
 
   void set_irq_pin(GPIOPin *irq_pin) { irq_pin_ = irq_pin; }

esphome/components/as5600/sensor/as5600_sensor.cpp

@@ -22,8 +22,6 @@ static const uint8_t REGISTER_STATUS = 0x0B;     // 8 bytes  / R
 static const uint8_t REGISTER_AGC = 0x1A;        // 8 bytes  / R
 static const uint8_t REGISTER_MAGNITUDE = 0x1B;  // 16 bytes / R
 
-float AS5600Sensor::get_setup_priority() const { return setup_priority::DATA; }
-
 void AS5600Sensor::dump_config() {
   LOG_SENSOR("", "AS5600 Sensor", this);
   ESP_LOGCONFIG(TAG, "  Out of Range Mode: %u", this->out_of_range_mode_);

esphome/components/as5600/sensor/as5600_sensor.h

@@ -14,7 +14,6 @@ class AS5600Sensor : public PollingComponent, public Parented<AS5600Component>,
  public:
   void update() override;
   void dump_config() override;
-  float get_setup_priority() const override;
 
   void set_angle_sensor(sensor::Sensor *angle_sensor) { this->angle_sensor_ = angle_sensor; }
   void set_raw_angle_sensor(sensor::Sensor *raw_angle_sensor) { this->raw_angle_sensor_ = raw_angle_sensor; }

esphome/components/as7341/as7341.cpp

@@ -58,8 +58,6 @@ void AS7341Component::dump_config() {
   LOG_SENSOR("  ", "NIR", this->nir_);
 }
 
-float AS7341Component::get_setup_priority() const { return setup_priority::DATA; }
-
 void AS7341Component::update() {
   this->read_channels(this->channel_readings_);
 

esphome/components/as7341/as7341.h

@@ -78,7 +78,6 @@ class AS7341Component : public PollingComponent, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   void update() override;
 
   void set_f1_sensor(sensor::Sensor *f1_sensor) { this->f1_ = f1_sensor; }

esphome/components/at581x/at581x.cpp

@@ -77,14 +77,14 @@ void AT581XComponent::dump_config() { LOG_I2C_DEVICE(this); }
 bool AT581XComponent::i2c_write_config() {
   ESP_LOGCONFIG(TAG,
                 "Writing new config for AT581X\n"
-                "Frequency: %dMHz\n"
-                "Sensing distance: %d\n"
-                "Power: %dµA\n"
-                "Gain: %d\n"
-                "Trigger base time: %dms\n"
-                "Trigger keep time: %dms\n"
-                "Protect time: %dms\n"
-                "Self check time: %dms",
+                "  Frequency: %dMHz\n"
+                "  Sensing distance: %d\n"
+                "  Power: %dµA\n"
+                "  Gain: %d\n"
+                "  Trigger base time: %dms\n"
+                "  Trigger keep time: %dms\n"
+                "  Protect time: %dms\n"
+                "  Self check time: %dms",
                 this->freq_, this->delta_, this->power_, this->gain_, this->trigger_base_time_ms_,
                 this->trigger_keep_time_ms_, this->protect_time_ms_, this->self_check_time_ms_);
 

esphome/components/atm90e26/atm90e26.cpp

@@ -146,7 +146,6 @@ void ATM90E26Component::dump_config() {
   LOG_SENSOR("  ", "Active Reverse Energy A", this->reverse_active_energy_sensor_);
   LOG_SENSOR("  ", "Frequency", this->freq_sensor_);
 }
-float ATM90E26Component::get_setup_priority() const { return setup_priority::DATA; }
 
 uint16_t ATM90E26Component::read16_(uint8_t a_register) {
   uint8_t data[2];

esphome/components/atm90e26/atm90e26.h

@@ -13,7 +13,6 @@ class ATM90E26Component : public PollingComponent,
  public:
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   void update() override;
 
   void set_voltage_sensor(sensor::Sensor *obj) { this->voltage_sensor_ = obj; }

esphome/components/audio/__init__.py

@@ -1,10 +1,14 @@
+from dataclasses import dataclass
+
 import esphome.codegen as cg
 from esphome.components.esp32 import add_idf_component, include_builtin_idf_component
 import esphome.config_validation as cv
 from esphome.const import CONF_BITS_PER_SAMPLE, CONF_NUM_CHANNELS, CONF_SAMPLE_RATE
+from esphome.core import CORE
 import esphome.final_validate as fv
 
 CODEOWNERS = ["@kahrendt"]
+DOMAIN = "audio"
 audio_ns = cg.esphome_ns.namespace("audio")
 
 AudioFile = audio_ns.struct("AudioFile")
@@ -14,9 +18,38 @@ AUDIO_FILE_TYPE_ENUM = {
     "WAV": AudioFileType.WAV,
     "MP3": AudioFileType.MP3,
     "FLAC": AudioFileType.FLAC,
+    "OPUS": AudioFileType.OPUS,
 }
 
 
+@dataclass
+class AudioData:
+    flac_support: bool = False
+    mp3_support: bool = False
+    opus_support: bool = False
+
+
+def _get_data() -> AudioData:
+    if DOMAIN not in CORE.data:
+        CORE.data[DOMAIN] = AudioData()
+    return CORE.data[DOMAIN]
+
+
+def request_flac_support() -> None:
+    """Request FLAC codec support for audio decoding."""
+    _get_data().flac_support = True
+
+
+def request_mp3_support() -> None:
+    """Request MP3 codec support for audio decoding."""
+    _get_data().mp3_support = True
+
+
+def request_opus_support() -> None:
+    """Request Opus codec support for audio decoding."""
+    _get_data().opus_support = True
+
+
 CONF_MIN_BITS_PER_SAMPLE = "min_bits_per_sample"
 CONF_MAX_BITS_PER_SAMPLE = "max_bits_per_sample"
 CONF_MIN_CHANNELS = "min_channels"
@@ -173,3 +206,12 @@ async def to_code(config):
         name="esphome/esp-audio-libs",
         ref="2.0.3",
     )
+
+    data = _get_data()
+    if data.flac_support:
+        cg.add_define("USE_AUDIO_FLAC_SUPPORT")
+    if data.mp3_support:
+        cg.add_define("USE_AUDIO_MP3_SUPPORT")
+    if data.opus_support:
+        cg.add_define("USE_AUDIO_OPUS_SUPPORT")
+        add_idf_component(name="esphome/micro-opus", ref="0.3.3")

esphome/components/audio/audio.cpp

@@ -46,6 +46,10 @@ const char *audio_file_type_to_string(AudioFileType file_type) {
 #ifdef USE_AUDIO_MP3_SUPPORT
     case AudioFileType::MP3:
       return "MP3";
+#endif
+#ifdef USE_AUDIO_OPUS_SUPPORT
+    case AudioFileType::OPUS:
+      return "OPUS";
 #endif
     case AudioFileType::WAV:
       return "WAV";

esphome/components/audio/audio.h

@@ -112,6 +112,9 @@ enum class AudioFileType : uint8_t {
 #endif
 #ifdef USE_AUDIO_MP3_SUPPORT
   MP3,
+#endif
+#ifdef USE_AUDIO_OPUS_SUPPORT
+  OPUS,
 #endif
   WAV,
 };

esphome/components/audio/audio_decoder.cpp

@@ -3,17 +3,20 @@
 #ifdef USE_ESP32
 
 #include "esphome/core/hal.h"
+#include "esphome/core/log.h"
 
 namespace esphome {
 namespace audio {
 
+static const char *const TAG = "audio.decoder";
+
 static const uint32_t DECODING_TIMEOUT_MS = 50;    // The decode function will yield after this duration
 static const uint32_t READ_WRITE_TIMEOUT_MS = 20;  // Timeout for transferring audio data
 
 static const uint32_t MAX_POTENTIALLY_FAILED_COUNT = 10;
 
-AudioDecoder::AudioDecoder(size_t input_buffer_size, size_t output_buffer_size) {
-  this->input_transfer_buffer_ = AudioSourceTransferBuffer::create(input_buffer_size);
+AudioDecoder::AudioDecoder(size_t input_buffer_size, size_t output_buffer_size)
+    : input_buffer_size_(input_buffer_size) {
   this->output_transfer_buffer_ = AudioSinkTransferBuffer::create(output_buffer_size);
 }
 
@@ -26,11 +29,20 @@ AudioDecoder::~AudioDecoder() {
 }
 
 esp_err_t AudioDecoder::add_source(std::weak_ptr<RingBuffer> &input_ring_buffer) {
-  if (this->input_transfer_buffer_ != nullptr) {
-    this->input_transfer_buffer_->set_source(input_ring_buffer);
-    return ESP_OK;
+  auto source = AudioSourceTransferBuffer::create(this->input_buffer_size_);
+  if (source == nullptr) {
+    return ESP_ERR_NO_MEM;
   }
-  return ESP_ERR_NO_MEM;
+  source->set_source(input_ring_buffer);
+  this->input_buffer_ = std::move(source);
+  return ESP_OK;
+}
+
+esp_err_t AudioDecoder::add_source(const uint8_t *data_pointer, size_t length) {
+  auto source = make_unique<ConstAudioSourceBuffer>();
+  source->set_data(data_pointer, length);
+  this->input_buffer_ = std::move(source);
+  return ESP_OK;
 }
 
 esp_err_t AudioDecoder::add_sink(std::weak_ptr<RingBuffer> &output_ring_buffer) {
@@ -51,8 +63,16 @@ esp_err_t AudioDecoder::add_sink(speaker::Speaker *speaker) {
 }
 #endif
 
+esp_err_t AudioDecoder::add_sink(AudioSinkCallback *callback) {
+  if (this->output_transfer_buffer_ != nullptr) {
+    this->output_transfer_buffer_->set_sink(callback);
+    return ESP_OK;
+  }
+  return ESP_ERR_NO_MEM;
+}
+
 esp_err_t AudioDecoder::start(AudioFileType audio_file_type) {
-  if ((this->input_transfer_buffer_ == nullptr) || (this->output_transfer_buffer_ == nullptr)) {
+  if (this->output_transfer_buffer_ == nullptr) {
     return ESP_ERR_NO_MEM;
   }
 
@@ -65,6 +85,10 @@ esp_err_t AudioDecoder::start(AudioFileType audio_file_type) {
 #ifdef USE_AUDIO_FLAC_SUPPORT
     case AudioFileType::FLAC:
       this->flac_decoder_ = make_unique<esp_audio_libs::flac::FLACDecoder>();
+      // CRC check slows down decoding by 15-20% on an ESP32-S3. FLAC sources in ESPHome are either from an http source
+      // or built into the firmware, so the data integrity is already verified by the time it gets to the decoder,
+      // making the CRC check unnecessary.
+      this->flac_decoder_->set_crc_check_enabled(false);
       this->free_buffer_required_ =
           this->output_transfer_buffer_->capacity();  // Adjusted and reallocated after reading the header
       break;
@@ -79,6 +103,14 @@ esp_err_t AudioDecoder::start(AudioFileType audio_file_type) {
       // Always reallocate the output transfer buffer to the smallest necessary size
       this->output_transfer_buffer_->reallocate(this->free_buffer_required_);
       break;
+#endif
+#ifdef USE_AUDIO_OPUS_SUPPORT
+    case AudioFileType::OPUS:
+      this->opus_decoder_ = make_unique<micro_opus::OggOpusDecoder>();
+      this->free_buffer_required_ =
+          this->output_transfer_buffer_->capacity();  // Adjusted and reallocated after reading the header
+      this->decoder_buffers_internally_ = true;
+      break;
 #endif
     case AudioFileType::WAV:
       this->wav_decoder_ = make_unique<esp_audio_libs::wav_decoder::WAVDecoder>();
@@ -101,6 +133,10 @@ esp_err_t AudioDecoder::start(AudioFileType audio_file_type) {
 }
 
 AudioDecoderState AudioDecoder::decode(bool stop_gracefully) {
+  if (this->input_buffer_ == nullptr) {
+    return AudioDecoderState::FAILED;
+  }
+
   if (stop_gracefully) {
     if (this->output_transfer_buffer_->available() == 0) {
       if (this->end_of_file_) {
@@ -108,7 +144,7 @@ AudioDecoderState AudioDecoder::decode(bool stop_gracefully) {
         return AudioDecoderState::FINISHED;
       }
 
-      if (!this->input_transfer_buffer_->has_buffered_data()) {
+      if (!this->input_buffer_->has_buffered_data()) {
         // If all the internal buffers are empty, the decoding is done
         return AudioDecoderState::FINISHED;
       }
@@ -158,10 +194,11 @@ AudioDecoderState AudioDecoder::decode(bool stop_gracefully) {
     // Decode more audio
 
     // Only shift data on the first loop iteration to avoid unnecessary, slow moves
-    size_t bytes_read = this->input_transfer_buffer_->transfer_data_from_source(pdMS_TO_TICKS(READ_WRITE_TIMEOUT_MS),
-                                                                                first_loop_iteration);
+    // If the decoder buffers internally, then never shift
+    size_t bytes_read = this->input_buffer_->fill(pdMS_TO_TICKS(READ_WRITE_TIMEOUT_MS),
+                                                  first_loop_iteration && !this->decoder_buffers_internally_);
 
-    if (!first_loop_iteration && (this->input_transfer_buffer_->available() < bytes_processed)) {
+    if (!first_loop_iteration && (this->input_buffer_->available() < bytes_processed)) {
       // Less data is available than what was processed in last iteration, so don't attempt to decode.
       // This attempts to avoid the decoder from consistently trying to decode an incomplete frame. The transfer buffer
       // will shift the remaining data to the start and copy more from the source the next time the decode function is
@@ -169,19 +206,21 @@ AudioDecoderState AudioDecoder::decode(bool stop_gracefully) {
       break;
     }
 
-    bytes_available_before_processing = this->input_transfer_buffer_->available();
+    bytes_available_before_processing = this->input_buffer_->available();
 
     if ((this->potentially_failed_count_ > 0) && (bytes_read == 0)) {
       // Failed to decode in last attempt and there is no new data
 
-      if ((this->input_transfer_buffer_->free() == 0) && first_loop_iteration) {
-        // The input buffer is full. Since it previously failed on the exact same data, we can never recover
+      if ((this->input_buffer_->free() == 0) && first_loop_iteration) {
+        // The input buffer is full (or read-only, e.g. const flash source). Since it previously failed on the exact
+        // same data, we can never recover. For const sources this is correct: the entire file is already available, so
+        // a decode failure is genuine, not a transient out-of-data condition.
         state = FileDecoderState::FAILED;
       } else {
         // Attempt to get more data next time
         state = FileDecoderState::IDLE;
       }
-    } else if (this->input_transfer_buffer_->available() == 0) {
+    } else if (this->input_buffer_->available() == 0) {
       // No data to decode, attempt to get more data next time
       state = FileDecoderState::IDLE;
     } else {
@@ -195,6 +234,11 @@ AudioDecoderState AudioDecoder::decode(bool stop_gracefully) {
         case AudioFileType::MP3:
           state = this->decode_mp3_();
           break;
+#endif
+#ifdef USE_AUDIO_OPUS_SUPPORT
+        case AudioFileType::OPUS:
+          state = this->decode_opus_();
+          break;
 #endif
         case AudioFileType::WAV:
           state = this->decode_wav_();
@@ -207,7 +251,7 @@ AudioDecoderState AudioDecoder::decode(bool stop_gracefully) {
     }
 
     first_loop_iteration = false;
-    bytes_processed = bytes_available_before_processing - this->input_transfer_buffer_->available();
+    bytes_processed = bytes_available_before_processing - this->input_buffer_->available();
 
     if (state == FileDecoderState::POTENTIALLY_FAILED) {
       ++this->potentially_failed_count_;
@@ -226,8 +270,7 @@ AudioDecoderState AudioDecoder::decode(bool stop_gracefully) {
 FileDecoderState AudioDecoder::decode_flac_() {
   if (!this->audio_stream_info_.has_value()) {
     // Header hasn't been read
-    auto result = this->flac_decoder_->read_header(this->input_transfer_buffer_->get_buffer_start(),
-                                                   this->input_transfer_buffer_->available());
+    auto result = this->flac_decoder_->read_header(this->input_buffer_->data(), this->input_buffer_->available());
 
     if (result > esp_audio_libs::flac::FLAC_DECODER_HEADER_OUT_OF_DATA) {
       // Serrious error reading FLAC header, there is no recovery
@@ -235,7 +278,7 @@ FileDecoderState AudioDecoder::decode_flac_() {
     }
 
     size_t bytes_consumed = this->flac_decoder_->get_bytes_index();
-    this->input_transfer_buffer_->decrease_buffer_length(bytes_consumed);
+    this->input_buffer_->consume(bytes_consumed);
 
     if (result == esp_audio_libs::flac::FLAC_DECODER_HEADER_OUT_OF_DATA) {
       return FileDecoderState::MORE_TO_PROCESS;
@@ -256,8 +299,7 @@ FileDecoderState AudioDecoder::decode_flac_() {
   }
 
   uint32_t output_samples = 0;
-  auto result = this->flac_decoder_->decode_frame(this->input_transfer_buffer_->get_buffer_start(),
-                                                  this->input_transfer_buffer_->available(),
+  auto result = this->flac_decoder_->decode_frame(this->input_buffer_->data(), this->input_buffer_->available(),
                                                   this->output_transfer_buffer_->get_buffer_end(), &output_samples);
 
   if (result == esp_audio_libs::flac::FLAC_DECODER_ERROR_OUT_OF_DATA) {
@@ -266,7 +308,7 @@ FileDecoderState AudioDecoder::decode_flac_() {
   }
 
   size_t bytes_consumed = this->flac_decoder_->get_bytes_index();
-  this->input_transfer_buffer_->decrease_buffer_length(bytes_consumed);
+  this->input_buffer_->consume(bytes_consumed);
 
   if (result > esp_audio_libs::flac::FLAC_DECODER_ERROR_OUT_OF_DATA) {
     // Corrupted frame, don't retry with current buffer content, wait for new sync
@@ -288,26 +330,25 @@ FileDecoderState AudioDecoder::decode_flac_() {
 #ifdef USE_AUDIO_MP3_SUPPORT
 FileDecoderState AudioDecoder::decode_mp3_() {
   // Look for the next sync word
-  int buffer_length = (int) this->input_transfer_buffer_->available();
-  int32_t offset =
-      esp_audio_libs::helix_decoder::MP3FindSyncWord(this->input_transfer_buffer_->get_buffer_start(), buffer_length);
+  int buffer_length = (int) this->input_buffer_->available();
+  int32_t offset = esp_audio_libs::helix_decoder::MP3FindSyncWord(this->input_buffer_->data(), buffer_length);
 
   if (offset < 0) {
     // New data may have the sync word
-    this->input_transfer_buffer_->decrease_buffer_length(buffer_length);
+    this->input_buffer_->consume(buffer_length);
     return FileDecoderState::POTENTIALLY_FAILED;
   }
 
   // Advance read pointer to match the offset for the syncword
-  this->input_transfer_buffer_->decrease_buffer_length(offset);
-  const uint8_t *buffer_start = this->input_transfer_buffer_->get_buffer_start();
+  this->input_buffer_->consume(offset);
+  const uint8_t *buffer_start = this->input_buffer_->data();
 
-  buffer_length = (int) this->input_transfer_buffer_->available();
+  buffer_length = (int) this->input_buffer_->available();
   int err = esp_audio_libs::helix_decoder::MP3Decode(this->mp3_decoder_, &buffer_start, &buffer_length,
                                                      (int16_t *) this->output_transfer_buffer_->get_buffer_end(), 0);
 
-  size_t consumed = this->input_transfer_buffer_->available() - buffer_length;
-  this->input_transfer_buffer_->decrease_buffer_length(consumed);
+  size_t consumed = this->input_buffer_->available() - buffer_length;
+  this->input_buffer_->consume(consumed);
 
   if (err) {
     switch (err) {
@@ -339,15 +380,53 @@ FileDecoderState AudioDecoder::decode_mp3_() {
 }
 #endif
 
+#ifdef USE_AUDIO_OPUS_SUPPORT
+FileDecoderState AudioDecoder::decode_opus_() {
+  bool processed_header = this->opus_decoder_->is_initialized();
+
+  size_t bytes_consumed, samples_decoded;
+
+  micro_opus::OggOpusResult result = this->opus_decoder_->decode(
+      this->input_buffer_->data(), this->input_buffer_->available(), this->output_transfer_buffer_->get_buffer_end(),
+      this->output_transfer_buffer_->free(), bytes_consumed, samples_decoded);
+
+  if (result == micro_opus::OGG_OPUS_OK) {
+    if (!processed_header && this->opus_decoder_->is_initialized()) {
+      // Header processed and stream info is available
+      this->audio_stream_info_ =
+          audio::AudioStreamInfo(this->opus_decoder_->get_bit_depth(), this->opus_decoder_->get_channels(),
+                                 this->opus_decoder_->get_sample_rate());
+    }
+    if (samples_decoded > 0 && this->audio_stream_info_.has_value()) {
+      // Some audio was processed
+      this->output_transfer_buffer_->increase_buffer_length(
+          this->audio_stream_info_.value().frames_to_bytes(samples_decoded));
+    }
+    this->input_buffer_->consume(bytes_consumed);
+  } else if (result == micro_opus::OGG_OPUS_OUTPUT_BUFFER_TOO_SMALL) {
+    // Reallocate to decode the packet on the next call
+    this->free_buffer_required_ = this->opus_decoder_->get_required_output_buffer_size();
+    if (!this->output_transfer_buffer_->reallocate(this->free_buffer_required_)) {
+      // Couldn't reallocate output buffer
+      return FileDecoderState::FAILED;
+    }
+  } else {
+    ESP_LOGE(TAG, "Opus decoder failed: %" PRId8, result);
+    return FileDecoderState::POTENTIALLY_FAILED;
+  }
+  return FileDecoderState::MORE_TO_PROCESS;
+}
+#endif
+
 FileDecoderState AudioDecoder::decode_wav_() {
   if (!this->audio_stream_info_.has_value()) {
     // Header hasn't been processed
 
-    esp_audio_libs::wav_decoder::WAVDecoderResult result = this->wav_decoder_->decode_header(
-        this->input_transfer_buffer_->get_buffer_start(), this->input_transfer_buffer_->available());
+    esp_audio_libs::wav_decoder::WAVDecoderResult result =
+        this->wav_decoder_->decode_header(this->input_buffer_->data(), this->input_buffer_->available());
 
     if (result == esp_audio_libs::wav_decoder::WAV_DECODER_SUCCESS_IN_DATA) {
-      this->input_transfer_buffer_->decrease_buffer_length(this->wav_decoder_->bytes_processed());
+      this->input_buffer_->consume(this->wav_decoder_->bytes_processed());
 
       this->audio_stream_info_ = audio::AudioStreamInfo(
           this->wav_decoder_->bits_per_sample(), this->wav_decoder_->num_channels(), this->wav_decoder_->sample_rate());
@@ -363,7 +442,7 @@ FileDecoderState AudioDecoder::decode_wav_() {
     }
   } else {
     if (!this->wav_has_known_end_ || (this->wav_bytes_left_ > 0)) {
-      size_t bytes_to_copy = this->input_transfer_buffer_->available();
+      size_t bytes_to_copy = this->input_buffer_->available();
 
       if (this->wav_has_known_end_) {
         bytes_to_copy = std::min(bytes_to_copy, this->wav_bytes_left_);
@@ -372,9 +451,8 @@ FileDecoderState AudioDecoder::decode_wav_() {
       bytes_to_copy = std::min(bytes_to_copy, this->output_transfer_buffer_->free());
 
       if (bytes_to_copy > 0) {
-        std::memcpy(this->output_transfer_buffer_->get_buffer_end(), this->input_transfer_buffer_->get_buffer_start(),
-                    bytes_to_copy);
-        this->input_transfer_buffer_->decrease_buffer_length(bytes_to_copy);
+        std::memcpy(this->output_transfer_buffer_->get_buffer_end(), this->input_buffer_->data(), bytes_to_copy);
+        this->input_buffer_->consume(bytes_to_copy);
         this->output_transfer_buffer_->increase_buffer_length(bytes_to_copy);
         if (this->wav_has_known_end_) {
           this->wav_bytes_left_ -= bytes_to_copy;

esphome/components/audio/audio_decoder.h

@@ -24,6 +24,11 @@
 #endif
 #include <wav_decoder.h>
 
+// micro-opus
+#ifdef USE_AUDIO_OPUS_SUPPORT
+#include <micro_opus/ogg_opus_decoder.h>
+#endif
+
 namespace esphome {
 namespace audio {
 
@@ -45,17 +50,17 @@ enum class FileDecoderState : uint8_t {
 class AudioDecoder {
   /*
    * @brief Class that facilitates decoding an audio file.
-   * The audio file is read from a ring buffer source, decoded, and sent to an audio sink (ring buffer or speaker
-   * component).
-   * Supports wav, flac, and mp3 formats.
+   * The audio file is read from a source (ring buffer or const data pointer), decoded, and sent to an audio sink
+   * (ring buffer, speaker component, or callback).
+   * Supports wav, flac, mp3, and ogg opus formats.
    */
  public:
-  /// @brief Allocates the input and output transfer buffers
+  /// @brief Allocates the output transfer buffer and stores the input buffer size for later use by add_source()
   /// @param input_buffer_size Size of the input transfer buffer in bytes.
   /// @param output_buffer_size Size of the output transfer buffer in bytes.
   AudioDecoder(size_t input_buffer_size, size_t output_buffer_size);
 
-  /// @brief Deallocates the MP3 decoder (the flac and wav decoders are deallocated automatically)
+  /// @brief Deallocates the MP3 decoder (the flac, opus, and wav decoders are deallocated automatically)
   ~AudioDecoder();
 
   /// @brief Adds a source ring buffer for raw file data. Takes ownership of the ring buffer in a shared_ptr.
@@ -75,6 +80,17 @@ class AudioDecoder {
   esp_err_t add_sink(speaker::Speaker *speaker);
 #endif
 
+  /// @brief Adds a const data pointer as the source for raw file data. Does not allocate a transfer buffer.
+  /// @param data_pointer Pointer to the const audio data (e.g., stored in flash memory)
+  /// @param length Size of the data in bytes
+  /// @return ESP_OK
+  esp_err_t add_source(const uint8_t *data_pointer, size_t length);
+
+  /// @brief Adds a callback as the sink for decoded audio.
+  /// @param callback Pointer to the AudioSinkCallback implementation
+  /// @return ESP_OK if successful, ESP_ERR_NO_MEM if the transfer buffer wasn't allocated
+  esp_err_t add_sink(AudioSinkCallback *callback);
+
   /// @brief Sets up decoding the file
   /// @param audio_file_type AudioFileType of the file
   /// @return ESP_OK if successful, ESP_ERR_NO_MEM if the transfer buffers fail to allocate, or ESP_ERR_NOT_SUPPORTED if
@@ -108,26 +124,33 @@ class AudioDecoder {
 #ifdef USE_AUDIO_MP3_SUPPORT
   FileDecoderState decode_mp3_();
   esp_audio_libs::helix_decoder::HMP3Decoder mp3_decoder_;
+#endif
+#ifdef USE_AUDIO_OPUS_SUPPORT
+  FileDecoderState decode_opus_();
+  std::unique_ptr<micro_opus::OggOpusDecoder> opus_decoder_;
 #endif
   FileDecoderState decode_wav_();
 
-  std::unique_ptr<AudioSourceTransferBuffer> input_transfer_buffer_;
+  std::unique_ptr<AudioReadableBuffer> input_buffer_;
   std::unique_ptr<AudioSinkTransferBuffer> output_transfer_buffer_;
 
   AudioFileType audio_file_type_{AudioFileType::NONE};
   optional<AudioStreamInfo> audio_stream_info_{};
 
+  size_t input_buffer_size_{0};
   size_t free_buffer_required_{0};
   size_t wav_bytes_left_{0};
 
   uint32_t potentially_failed_count_{0};
+  uint32_t accumulated_frames_written_{0};
+  uint32_t playback_ms_{0};
+
   bool end_of_file_{false};
   bool wav_has_known_end_{false};
 
-  bool pause_output_{false};
+  bool decoder_buffers_internally_{false};
 
-  uint32_t accumulated_frames_written_{0};
-  uint32_t playback_ms_{0};
+  bool pause_output_{false};
 };
 }  // namespace audio
 }  // namespace esphome

esphome/components/audio/audio_reader.cpp

@@ -197,6 +197,11 @@ esp_err_t AudioReader::start(const std::string &uri, AudioFileType &file_type) {
     else if (str_endswith_ignore_case(url, ".flac")) {
       file_type = AudioFileType::FLAC;
     }
+#endif
+#ifdef USE_AUDIO_OPUS_SUPPORT
+    else if (str_endswith_ignore_case(url, ".opus")) {
+      file_type = AudioFileType::OPUS;
+    }
 #endif
     else {
       file_type = AudioFileType::NONE;
@@ -241,6 +246,14 @@ AudioFileType AudioReader::get_audio_type(const char *content_type) {
   if (strcasecmp(content_type, "audio/flac") == 0 || strcasecmp(content_type, "audio/x-flac") == 0) {
     return AudioFileType::FLAC;
   }
+#endif
+#ifdef USE_AUDIO_OPUS_SUPPORT
+  // Match "audio/ogg" with a codecs parameter containing "opus"
+  // Valid forms: audio/ogg;codecs=opus, audio/ogg; codecs="opus", etc.
+  // Plain "audio/ogg" without a codecs parameter is not matched, as those are almost always Ogg Vorbis streams
+  if (strncasecmp(content_type, "audio/ogg", 9) == 0 && strcasestr(content_type + 9, "opus") != nullptr) {
+    return AudioFileType::OPUS;
+  }
 #endif
   return AudioFileType::NONE;
 }

esphome/components/audio/audio_transfer_buffer.cpp

@@ -2,6 +2,8 @@
 
 #ifdef USE_ESP32
 
+#include <cstring>
+
 #include "esphome/core/helpers.h"
 
 namespace esphome {
@@ -75,12 +77,32 @@ bool AudioTransferBuffer::has_buffered_data() const {
 }
 
 bool AudioTransferBuffer::reallocate(size_t new_buffer_size) {
-  if (this->buffer_length_ > 0) {
-    // Buffer currently has data, so reallocation is impossible
+  if (this->buffer_ == nullptr) {
+    return this->allocate_buffer_(new_buffer_size);
+  }
+
+  if (new_buffer_size < this->buffer_length_) {
+    // New size is too small to hold existing data
     return false;
   }
-  this->deallocate_buffer_();
-  return this->allocate_buffer_(new_buffer_size);
+
+  // Shift existing data to the start of the buffer so realloc preserves it
+  if ((this->buffer_length_ > 0) && (this->data_start_ != this->buffer_)) {
+    std::memmove(this->buffer_, this->data_start_, this->buffer_length_);
+    this->data_start_ = this->buffer_;
+  }
+
+  RAMAllocator<uint8_t> allocator;
+  uint8_t *new_buffer = allocator.reallocate(this->buffer_, new_buffer_size);
+  if (new_buffer == nullptr) {
+    // Reallocation failed, but the original buffer is still valid
+    return false;
+  }
+
+  this->buffer_ = new_buffer;
+  this->data_start_ = this->buffer_;
+  this->buffer_size_ = new_buffer_size;
+  return true;
 }
 
 bool AudioTransferBuffer::allocate_buffer_(size_t buffer_size) {
@@ -115,12 +137,12 @@ size_t AudioSourceTransferBuffer::transfer_data_from_source(TickType_t ticks_to_
   if (pre_shift) {
     // Shift data in buffer to start
     if (this->buffer_length_ > 0) {
-      memmove(this->buffer_, this->data_start_, this->buffer_length_);
+      std::memmove(this->buffer_, this->data_start_, this->buffer_length_);
     }
     this->data_start_ = this->buffer_;
   }
 
-  size_t bytes_to_read = this->free();
+  size_t bytes_to_read = AudioTransferBuffer::free();
   size_t bytes_read = 0;
   if (bytes_to_read > 0) {
     if (this->ring_buffer_.use_count() > 0) {
@@ -143,6 +165,8 @@ size_t AudioSinkTransferBuffer::transfer_data_to_sink(TickType_t ticks_to_wait,
         if (this->ring_buffer_.use_count() > 0) {
       bytes_written =
           this->ring_buffer_->write_without_replacement((void *) this->data_start_, this->available(), ticks_to_wait);
+    } else if (this->sink_callback_ != nullptr) {
+      bytes_written = this->sink_callback_->audio_sink_write(this->data_start_, this->available(), ticks_to_wait);
     }
 
     this->decrease_buffer_length(bytes_written);
@@ -150,7 +174,7 @@ size_t AudioSinkTransferBuffer::transfer_data_to_sink(TickType_t ticks_to_wait,
 
   if (post_shift) {
     // Shift unwritten data to the start of the buffer
-    memmove(this->buffer_, this->data_start_, this->buffer_length_);
+    std::memmove(this->buffer_, this->data_start_, this->buffer_length_);
     this->data_start_ = this->buffer_;
   }
 
@@ -169,6 +193,21 @@ bool AudioSinkTransferBuffer::has_buffered_data() const {
   return (this->available() > 0);
 }
 
+size_t AudioSourceTransferBuffer::free() const { return AudioTransferBuffer::free(); }
+
+bool AudioSourceTransferBuffer::has_buffered_data() const { return AudioTransferBuffer::has_buffered_data(); }
+
+void ConstAudioSourceBuffer::set_data(const uint8_t *data, size_t length) {
+  this->data_start_ = data;
+  this->length_ = length;
+}
+
+void ConstAudioSourceBuffer::consume(size_t bytes) {
+  bytes = std::min(bytes, this->length_);
+  this->length_ -= bytes;
+  this->data_start_ += bytes;
+}
+
 }  // namespace audio
 }  // namespace esphome
 

esphome/components/audio/audio_transfer_buffer.h

@@ -15,6 +15,12 @@
 namespace esphome {
 namespace audio {
 
+/// @brief Abstract interface for writing decoded audio data to a sink.
+class AudioSinkCallback {
+ public:
+  virtual size_t audio_sink_write(uint8_t *data, size_t length, TickType_t ticks_to_wait) = 0;
+};
+
 class AudioTransferBuffer {
   /*
    * @brief Class that facilitates tranferring data between a buffer and an audio source or sink.
@@ -26,7 +32,7 @@ class AudioTransferBuffer {
   /// @brief Destructor that deallocates the transfer buffer
   ~AudioTransferBuffer();
 
-  /// @brief Returns a pointer to the start of the transfer buffer where available() bytes of exisiting data can be read
+  /// @brief Returns a pointer to the start of the transfer buffer where available() bytes of existing data can be read
   uint8_t *get_buffer_start() const { return this->data_start_; }
 
   /// @brief Returns a pointer to the end of the transfer buffer where free() bytes of new data can be written
@@ -56,6 +62,9 @@ class AudioTransferBuffer {
   /// @return True if there is data, false otherwise.
   virtual bool has_buffered_data() const;
 
+  /// @brief Reallocates the transfer buffer, preserving any existing data.
+  /// @param new_buffer_size The new size in bytes. Must be at least as large as available().
+  /// @return True if successful, false otherwise. On failure, the original buffer remains valid.
   bool reallocate(size_t new_buffer_size);
 
  protected:
@@ -105,6 +114,10 @@ class AudioSinkTransferBuffer : public AudioTransferBuffer {
   void set_sink(speaker::Speaker *speaker) { this->speaker_ = speaker; }
 #endif
 
+  /// @brief Adds a callback as the transfer buffer's sink.
+  /// @param callback Pointer to the AudioSinkCallback implementation
+  void set_sink(AudioSinkCallback *callback) { this->sink_callback_ = callback; }
+
   void clear_buffered_data() override;
 
   bool has_buffered_data() const override;
@@ -113,12 +126,44 @@ class AudioSinkTransferBuffer : public AudioTransferBuffer {
 #ifdef USE_SPEAKER
   speaker::Speaker *speaker_{nullptr};
 #endif
+  AudioSinkCallback *sink_callback_{nullptr};
 };
 
-class AudioSourceTransferBuffer : public AudioTransferBuffer {
+/// @brief Abstract interface for reading audio data from a buffer.
+/// Provides a common read interface for both mutable transfer buffers and read-only const buffers.
+class AudioReadableBuffer {
+ public:
+  virtual ~AudioReadableBuffer() = default;
+
+  /// @brief Returns a pointer to the start of readable data
+  virtual const uint8_t *data() const = 0;
+
+  /// @brief Returns the number of bytes available to read
+  virtual size_t available() const = 0;
+
+  /// @brief Returns the number of free bytes available to write. Defaults to 0 for read-only buffers.
+  virtual size_t free() const { return 0; }
+
+  /// @brief Advances past consumed data
+  /// @param bytes Number of bytes consumed
+  virtual void consume(size_t bytes) = 0;
+
+  /// @brief Tests if there is any buffered data
+  virtual bool has_buffered_data() const = 0;
+
+  /// @brief Refills the buffer from its source. No-op by default for read-only buffers.
+  /// @param ticks_to_wait FreeRTOS ticks to block while waiting for data
+  /// @param pre_shift If true, shifts existing data to the start of the buffer before reading
+  /// @return Number of bytes read
+  virtual size_t fill(TickType_t ticks_to_wait, bool pre_shift) { return 0; }
+  size_t fill(TickType_t ticks_to_wait) { return this->fill(ticks_to_wait, true); }
+};
+
+class AudioSourceTransferBuffer : public AudioTransferBuffer, public AudioReadableBuffer {
   /*
    * @brief A class that implements a transfer buffer for audio sources.
    * Supports reading audio data from a ring buffer into the transfer buffer for processing.
+   * Implements AudioReadableBuffer for use by consumers that only need read access.
    */
  public:
   /// @brief Creates a new source transfer buffer.
@@ -126,7 +171,7 @@ class AudioSourceTransferBuffer : public AudioTransferBuffer {
   /// @return unique_ptr if successfully allocated, nullptr otherwise
   static std::unique_ptr<AudioSourceTransferBuffer> create(size_t buffer_size);
 
-  /// @brief Reads any available data from the sink into the transfer buffer.
+  /// @brief Reads any available data from the source into the transfer buffer.
   /// @param ticks_to_wait FreeRTOS ticks to block while waiting for the source to have enough data
   /// @param pre_shift If true, any unwritten data is moved to the start of the buffer before transferring from the
   ///                  source. Defaults to true.
@@ -136,6 +181,36 @@ class AudioSourceTransferBuffer : public AudioTransferBuffer {
   /// @brief Adds a ring buffer as the transfer buffer's source.
   /// @param ring_buffer weak_ptr to the allocated ring buffer
   void set_source(const std::weak_ptr<RingBuffer> &ring_buffer) { this->ring_buffer_ = ring_buffer.lock(); };
+
+  // AudioReadableBuffer interface
+  const uint8_t *data() const override { return this->data_start_; }
+  size_t available() const override { return this->buffer_length_; }
+  size_t free() const override;
+  void consume(size_t bytes) override { this->decrease_buffer_length(bytes); }
+  bool has_buffered_data() const override;
+  size_t fill(TickType_t ticks_to_wait, bool pre_shift) override {
+    return this->transfer_data_from_source(ticks_to_wait, pre_shift);
+  }
+};
+
+/// @brief A lightweight read-only audio buffer for const data sources (e.g., flash memory).
+/// Does not allocate memory or transfer data from external sources.
+class ConstAudioSourceBuffer : public AudioReadableBuffer {
+ public:
+  /// @brief Sets the data pointer and length for the buffer
+  /// @param data Pointer to the const audio data
+  /// @param length Size of the data in bytes
+  void set_data(const uint8_t *data, size_t length);
+
+  // AudioReadableBuffer interface
+  const uint8_t *data() const override { return this->data_start_; }
+  size_t available() const override { return this->length_; }
+  void consume(size_t bytes) override;
+  bool has_buffered_data() const override { return this->length_ > 0; }
+
+ protected:
+  const uint8_t *data_start_{nullptr};
+  size_t length_{0};
 };
 
 }  // namespace audio

esphome/components/bang_bang/bang_bang_climate.cpp

@@ -6,8 +6,7 @@ namespace bang_bang {
 
 static const char *const TAG = "bang_bang.climate";
 
-BangBangClimate::BangBangClimate()
-    : idle_trigger_(new Trigger<>()), cool_trigger_(new Trigger<>()), heat_trigger_(new Trigger<>()) {}
+BangBangClimate::BangBangClimate() = default;
 
 void BangBangClimate::setup() {
   this->sensor_->add_on_state_callback([this](float state) {
@@ -160,13 +159,13 @@ void BangBangClimate::switch_to_action_(climate::ClimateAction action) {
   switch (action) {
     case climate::CLIMATE_ACTION_OFF:
     case climate::CLIMATE_ACTION_IDLE:
-      trig = this->idle_trigger_;
+      trig = &this->idle_trigger_;
       break;
     case climate::CLIMATE_ACTION_COOLING:
-      trig = this->cool_trigger_;
+      trig = &this->cool_trigger_;
       break;
     case climate::CLIMATE_ACTION_HEATING:
-      trig = this->heat_trigger_;
+      trig = &this->heat_trigger_;
       break;
     default:
       trig = nullptr;
@@ -204,9 +203,9 @@ void BangBangClimate::set_away_config(const BangBangClimateTargetTempConfig &awa
 void BangBangClimate::set_sensor(sensor::Sensor *sensor) { this->sensor_ = sensor; }
 void BangBangClimate::set_humidity_sensor(sensor::Sensor *humidity_sensor) { this->humidity_sensor_ = humidity_sensor; }
 
-Trigger<> *BangBangClimate::get_idle_trigger() const { return this->idle_trigger_; }
-Trigger<> *BangBangClimate::get_cool_trigger() const { return this->cool_trigger_; }
-Trigger<> *BangBangClimate::get_heat_trigger() const { return this->heat_trigger_; }
+Trigger<> *BangBangClimate::get_idle_trigger() { return &this->idle_trigger_; }
+Trigger<> *BangBangClimate::get_cool_trigger() { return &this->cool_trigger_; }
+Trigger<> *BangBangClimate::get_heat_trigger() { return &this->heat_trigger_; }
 
 void BangBangClimate::set_supports_cool(bool supports_cool) { this->supports_cool_ = supports_cool; }
 void BangBangClimate::set_supports_heat(bool supports_heat) { this->supports_heat_ = supports_heat; }

esphome/components/bang_bang/bang_bang_climate.h

@@ -30,9 +30,9 @@ class BangBangClimate : public climate::Climate, public Component {
   void set_normal_config(const BangBangClimateTargetTempConfig &normal_config);
   void set_away_config(const BangBangClimateTargetTempConfig &away_config);
 
-  Trigger<> *get_idle_trigger() const;
-  Trigger<> *get_cool_trigger() const;
-  Trigger<> *get_heat_trigger() const;
+  Trigger<> *get_idle_trigger();
+  Trigger<> *get_cool_trigger();
+  Trigger<> *get_heat_trigger();
 
  protected:
   /// Override control to change settings of the climate device.
@@ -57,17 +57,13 @@ class BangBangClimate : public climate::Climate, public Component {
    *
    * In idle mode, the controller is assumed to have both heating and cooling disabled.
    */
-  Trigger<> *idle_trigger_{nullptr};
+  Trigger<> idle_trigger_;
   /** The trigger to call when the controller should switch to cooling mode.
    */
-  Trigger<> *cool_trigger_{nullptr};
+  Trigger<> cool_trigger_;
   /** The trigger to call when the controller should switch to heating mode.
-   *
-   * A null value for this attribute means that the controller has no heating action
-   * For example window blinds, where only cooling (blinds closed) and not-cooling
-   * (blinds open) is possible.
    */
-  Trigger<> *heat_trigger_{nullptr};
+  Trigger<> heat_trigger_;
   /** A reference to the trigger that was previously active.
    *
    * This is so that the previous trigger can be stopped before enabling a new one.

esphome/components/bh1750/bh1750.cpp

@@ -265,6 +265,4 @@ void BH1750Sensor::fail_and_reset_() {
   this->state_ = IDLE;
 }
 
-float BH1750Sensor::get_setup_priority() const { return setup_priority::DATA; }
-
 }  // namespace esphome::bh1750

esphome/components/bh1750/bh1750.h

@@ -21,7 +21,6 @@ class BH1750Sensor : public sensor::Sensor, public PollingComponent, public i2c:
   void dump_config() override;
   void update() override;
   void loop() override;
-  float get_setup_priority() const override;
 
  protected:
   // State machine states

esphome/components/binary_sensor/__init__.py

@@ -562,6 +562,7 @@ async def setup_binary_sensor_core_(var, config):
     if inverted := config.get(CONF_INVERTED):
         cg.add(var.set_inverted(inverted))
     if filters_config := config.get(CONF_FILTERS):
+        cg.add_define("USE_BINARY_SENSOR_FILTER")
         filters = await cg.build_registry_list(FILTER_REGISTRY, filters_config)
         cg.add(var.add_filters(filters))
 

esphome/components/binary_sensor/automation.cpp

@@ -5,6 +5,14 @@ namespace esphome::binary_sensor {
 
 static const char *const TAG = "binary_sensor.automation";
 
+// MultiClickTrigger timeout IDs.
+// MultiClickTrigger is its own Component instance, so the scheduler scopes
+// IDs by component pointer — no risk of collisions between instances.
+constexpr uint32_t MULTICLICK_TRIGGER_ID = 0;
+constexpr uint32_t MULTICLICK_COOLDOWN_ID = 1;
+constexpr uint32_t MULTICLICK_IS_VALID_ID = 2;
+constexpr uint32_t MULTICLICK_IS_NOT_VALID_ID = 3;
+
 void MultiClickTrigger::on_state_(bool state) {
   // Handle duplicate events
   if (state == this->last_state_) {
@@ -21,13 +29,11 @@ void MultiClickTrigger::on_state_(bool state) {
     // Start matching
     MultiClickTriggerEvent evt = this->timing_[0];
     if (evt.state == state) {
-      ESP_LOGV(TAG,
-               "START min=%" PRIu32 " max=%" PRIu32 "\n"
-               "Multi Click: Starting multi click action!",
-               evt.min_length, evt.max_length);
+      ESP_LOGV(TAG, "START min=%" PRIu32 " max=%" PRIu32, evt.min_length, evt.max_length);
+      ESP_LOGV(TAG, "Multi Click: Starting multi click action!");
       this->at_index_ = 1;
       if (this->timing_.size() == 1 && evt.max_length == 4294967294UL) {
-        this->set_timeout("trigger", evt.min_length, [this]() { this->trigger_(); });
+        this->set_timeout(MULTICLICK_TRIGGER_ID, evt.min_length, [this]() { this->trigger_(); });
       } else {
         this->schedule_is_valid_(evt.min_length);
         this->schedule_is_not_valid_(evt.max_length);
@@ -57,13 +63,13 @@ void MultiClickTrigger::on_state_(bool state) {
     this->schedule_is_not_valid_(evt.max_length);
   } else if (*this->at_index_ + 1 != this->timing_.size()) {
     ESP_LOGV(TAG, "B i=%zu min=%" PRIu32, *this->at_index_, evt.min_length);  // NOLINT
-    this->cancel_timeout("is_not_valid");
+    this->cancel_timeout(MULTICLICK_IS_NOT_VALID_ID);
     this->schedule_is_valid_(evt.min_length);
   } else {
     ESP_LOGV(TAG, "C i=%zu min=%" PRIu32, *this->at_index_, evt.min_length);  // NOLINT
     this->is_valid_ = false;
-    this->cancel_timeout("is_not_valid");
-    this->set_timeout("trigger", evt.min_length, [this]() { this->trigger_(); });
+    this->cancel_timeout(MULTICLICK_IS_NOT_VALID_ID);
+    this->set_timeout(MULTICLICK_TRIGGER_ID, evt.min_length, [this]() { this->trigger_(); });
   }
 
   *this->at_index_ = *this->at_index_ + 1;
@@ -71,14 +77,14 @@ void MultiClickTrigger::on_state_(bool state) {
 void MultiClickTrigger::schedule_cooldown_() {
   ESP_LOGV(TAG, "Multi Click: Invalid length of press, starting cooldown of %" PRIu32 " ms", this->invalid_cooldown_);
   this->is_in_cooldown_ = true;
-  this->set_timeout("cooldown", this->invalid_cooldown_, [this]() {
+  this->set_timeout(MULTICLICK_COOLDOWN_ID, this->invalid_cooldown_, [this]() {
     ESP_LOGV(TAG, "Multi Click: Cooldown ended, matching is now enabled again.");
     this->is_in_cooldown_ = false;
   });
   this->at_index_.reset();
-  this->cancel_timeout("trigger");
-  this->cancel_timeout("is_valid");
-  this->cancel_timeout("is_not_valid");
+  this->cancel_timeout(MULTICLICK_TRIGGER_ID);
+  this->cancel_timeout(MULTICLICK_IS_VALID_ID);
+  this->cancel_timeout(MULTICLICK_IS_NOT_VALID_ID);
 }
 void MultiClickTrigger::schedule_is_valid_(uint32_t min_length) {
   if (min_length == 0) {
@@ -86,13 +92,13 @@ void MultiClickTrigger::schedule_is_valid_(uint32_t min_length) {
     return;
   }
   this->is_valid_ = false;
-  this->set_timeout("is_valid", min_length, [this]() {
+  this->set_timeout(MULTICLICK_IS_VALID_ID, min_length, [this]() {
     ESP_LOGV(TAG, "Multi Click: You can now %s the button.", this->parent_->state ? "RELEASE" : "PRESS");
     this->is_valid_ = true;
   });
 }
 void MultiClickTrigger::schedule_is_not_valid_(uint32_t max_length) {
-  this->set_timeout("is_not_valid", max_length, [this]() {
+  this->set_timeout(MULTICLICK_IS_NOT_VALID_ID, max_length, [this]() {
     ESP_LOGV(TAG, "Multi Click: You waited too long to %s.", this->parent_->state ? "RELEASE" : "PRESS");
     this->is_valid_ = false;
     this->schedule_cooldown_();
@@ -106,9 +112,9 @@ void MultiClickTrigger::cancel() {
 void MultiClickTrigger::trigger_() {
   ESP_LOGV(TAG, "Multi Click: Hooray, multi click is valid. Triggering!");
   this->at_index_.reset();
-  this->cancel_timeout("trigger");
-  this->cancel_timeout("is_valid");
-  this->cancel_timeout("is_not_valid");
+  this->cancel_timeout(MULTICLICK_TRIGGER_ID);
+  this->cancel_timeout(MULTICLICK_IS_VALID_ID);
+  this->cancel_timeout(MULTICLICK_IS_NOT_VALID_ID);
   this->trigger();
 }
 

esphome/components/binary_sensor/binary_sensor.cpp

@@ -18,11 +18,15 @@ void log_binary_sensor(const char *tag, const char *prefix, const char *type, Bi
 }
 
 void BinarySensor::publish_state(bool new_state) {
+#ifdef USE_BINARY_SENSOR_FILTER
   if (this->filter_list_ == nullptr) {
+#endif
     this->send_state_internal(new_state);
+#ifdef USE_BINARY_SENSOR_FILTER
   } else {
     this->filter_list_->input(new_state);
   }
+#endif
 }
 void BinarySensor::publish_initial_state(bool new_state) {
   this->invalidate_state();
@@ -47,6 +51,7 @@ bool BinarySensor::set_new_state(const optional<bool> &new_state) {
   return false;
 }
 
+#ifdef USE_BINARY_SENSOR_FILTER
 void BinarySensor::add_filter(Filter *filter) {
   filter->parent_ = this;
   if (this->filter_list_ == nullptr) {
@@ -63,6 +68,7 @@ void BinarySensor::add_filters(std::initializer_list<Filter *> filters) {
     this->add_filter(filter);
   }
 }
+#endif  // USE_BINARY_SENSOR_FILTER
 bool BinarySensor::is_status_binary_sensor() const { return false; }
 
 }  // namespace esphome::binary_sensor

esphome/components/binary_sensor/binary_sensor.h

@@ -2,7 +2,9 @@
 
 #include "esphome/core/entity_base.h"
 #include "esphome/core/helpers.h"
+#ifdef USE_BINARY_SENSOR_FILTER
 #include "esphome/components/binary_sensor/filter.h"
+#endif
 
 #include <initializer_list>
 
@@ -45,8 +47,10 @@ class BinarySensor : public StatefulEntityBase<bool>, public EntityBase_DeviceCl
    */
   void publish_initial_state(bool new_state);
 
+#ifdef USE_BINARY_SENSOR_FILTER
   void add_filter(Filter *filter);
   void add_filters(std::initializer_list<Filter *> filters);
+#endif
 
   // ========== INTERNAL METHODS ==========
   // (In most use cases you won't need these)
@@ -60,7 +64,9 @@ class BinarySensor : public StatefulEntityBase<bool>, public EntityBase_DeviceCl
   bool state{};
 
  protected:
+#ifdef USE_BINARY_SENSOR_FILTER
   Filter *filter_list_{nullptr};
+#endif
 
   bool set_new_state(const optional<bool> &new_state) override;
 };

esphome/components/binary_sensor/filter.cpp

@@ -1,3 +1,6 @@
+#include "esphome/core/defines.h"
+#ifdef USE_BINARY_SENSOR_FILTER
+
 #include "filter.h"
 
 #include "binary_sensor.h"
@@ -6,6 +9,14 @@ namespace esphome::binary_sensor {
 
 static const char *const TAG = "sensor.filter";
 
+// Timeout IDs for filter classes.
+// Each filter is its own Component instance, so the scheduler scopes
+// IDs by component pointer — no risk of collisions between instances.
+constexpr uint32_t FILTER_TIMEOUT_ID = 0;
+// AutorepeatFilter needs two distinct IDs (both timeouts on the same component)
+constexpr uint32_t AUTOREPEAT_TIMING_ID = 0;
+constexpr uint32_t AUTOREPEAT_ON_OFF_ID = 1;
+
 void Filter::output(bool value) {
   if (this->next_ == nullptr) {
     this->parent_->send_state_internal(value);
@@ -23,16 +34,16 @@ void Filter::input(bool value) {
 }
 
 void TimeoutFilter::input(bool value) {
-  this->set_timeout("timeout", this->timeout_delay_.value(), [this]() { this->parent_->invalidate_state(); });
+  this->set_timeout(FILTER_TIMEOUT_ID, this->timeout_delay_.value(), [this]() { this->parent_->invalidate_state(); });
   // we do not de-dup here otherwise changes from invalid to valid state will not be output
   this->output(value);
 }
 
 optional<bool> DelayedOnOffFilter::new_value(bool value) {
   if (value) {
-    this->set_timeout("ON_OFF", this->on_delay_.value(), [this]() { this->output(true); });
+    this->set_timeout(FILTER_TIMEOUT_ID, this->on_delay_.value(), [this]() { this->output(true); });
   } else {
-    this->set_timeout("ON_OFF", this->off_delay_.value(), [this]() { this->output(false); });
+    this->set_timeout(FILTER_TIMEOUT_ID, this->off_delay_.value(), [this]() { this->output(false); });
   }
   return {};
 }
@@ -41,10 +52,10 @@ float DelayedOnOffFilter::get_setup_priority() const { return setup_priority::HA
 
 optional<bool> DelayedOnFilter::new_value(bool value) {
   if (value) {
-    this->set_timeout("ON", this->delay_.value(), [this]() { this->output(true); });
+    this->set_timeout(FILTER_TIMEOUT_ID, this->delay_.value(), [this]() { this->output(true); });
     return {};
   } else {
-    this->cancel_timeout("ON");
+    this->cancel_timeout(FILTER_TIMEOUT_ID);
     return false;
   }
 }
@@ -53,10 +64,10 @@ float DelayedOnFilter::get_setup_priority() const { return setup_priority::HARDW
 
 optional<bool> DelayedOffFilter::new_value(bool value) {
   if (!value) {
-    this->set_timeout("OFF", this->delay_.value(), [this]() { this->output(false); });
+    this->set_timeout(FILTER_TIMEOUT_ID, this->delay_.value(), [this]() { this->output(false); });
     return {};
   } else {
-    this->cancel_timeout("OFF");
+    this->cancel_timeout(FILTER_TIMEOUT_ID);
     return true;
   }
 }
@@ -76,8 +87,8 @@ optional<bool> AutorepeatFilter::new_value(bool value) {
     this->next_timing_();
     return true;
   } else {
-    this->cancel_timeout("TIMING");
-    this->cancel_timeout("ON_OFF");
+    this->cancel_timeout(AUTOREPEAT_TIMING_ID);
+    this->cancel_timeout(AUTOREPEAT_ON_OFF_ID);
     this->active_timing_ = 0;
     return false;
   }
@@ -88,8 +99,10 @@ void AutorepeatFilter::next_timing_() {
   // 1st time: starts waiting the first delay
   // 2nd time: starts waiting the second delay and starts toggling with the first time_off / _on
   // last time: no delay to start but have to bump the index to reflect the last
-  if (this->active_timing_ < this->timings_.size())
-    this->set_timeout("TIMING", this->timings_[this->active_timing_].delay, [this]() { this->next_timing_(); });
+  if (this->active_timing_ < this->timings_.size()) {
+    this->set_timeout(AUTOREPEAT_TIMING_ID, this->timings_[this->active_timing_].delay,
+                      [this]() { this->next_timing_(); });
+  }
 
   if (this->active_timing_ <= this->timings_.size()) {
     this->active_timing_++;
@@ -104,7 +117,8 @@ void AutorepeatFilter::next_timing_() {
 void AutorepeatFilter::next_value_(bool val) {
   const AutorepeatFilterTiming &timing = this->timings_[this->active_timing_ - 2];
   this->output(val);  // This is at least the second one so not initial
-  this->set_timeout("ON_OFF", val ? timing.time_on : timing.time_off, [this, val]() { this->next_value_(!val); });
+  this->set_timeout(AUTOREPEAT_ON_OFF_ID, val ? timing.time_on : timing.time_off,
+                    [this, val]() { this->next_value_(!val); });
 }
 
 float AutorepeatFilter::get_setup_priority() const { return setup_priority::HARDWARE; }
@@ -115,7 +129,7 @@ optional<bool> LambdaFilter::new_value(bool value) { return this->f_(value); }
 
 optional<bool> SettleFilter::new_value(bool value) {
   if (!this->steady_) {
-    this->set_timeout("SETTLE", this->delay_.value(), [this, value]() {
+    this->set_timeout(FILTER_TIMEOUT_ID, this->delay_.value(), [this, value]() {
       this->steady_ = true;
       this->output(value);
     });
@@ -123,7 +137,7 @@ optional<bool> SettleFilter::new_value(bool value) {
   } else {
     this->steady_ = false;
     this->output(value);
-    this->set_timeout("SETTLE", this->delay_.value(), [this]() { this->steady_ = true; });
+    this->set_timeout(FILTER_TIMEOUT_ID, this->delay_.value(), [this]() { this->steady_ = true; });
     return value;
   }
 }
@@ -131,3 +145,5 @@ optional<bool> SettleFilter::new_value(bool value) {
 float SettleFilter::get_setup_priority() const { return setup_priority::HARDWARE; }
 
 }  // namespace esphome::binary_sensor
+
+#endif  // USE_BINARY_SENSOR_FILTER

esphome/components/binary_sensor/filter.h

@@ -1,5 +1,8 @@
 #pragma once
 
+#include "esphome/core/defines.h"
+#ifdef USE_BINARY_SENSOR_FILTER
+
 #include "esphome/core/automation.h"
 #include "esphome/core/component.h"
 #include "esphome/core/helpers.h"
@@ -138,3 +141,5 @@ class SettleFilter : public Filter, public Component {
 };
 
 }  // namespace esphome::binary_sensor
+
+#endif  // USE_BINARY_SENSOR_FILTER

esphome/components/bk72xx/boards.py

@@ -159,6 +159,10 @@ BK72XX_BOARD_PINS = {
         "A0": 23,
     },
     "cbu": {
+        "SPI0_CS": 15,
+        "SPI0_MISO": 17,
+        "SPI0_MOSI": 16,
+        "SPI0_SCK": 14,
         "WIRE1_SCL": 20,
         "WIRE1_SDA": 21,
         "WIRE2_SCL": 0,
@@ -227,6 +231,10 @@ BK72XX_BOARD_PINS = {
         "A0": 23,
     },
     "generic-bk7231t-qfn32-tuya": {
+        "SPI0_CS": 15,
+        "SPI0_MISO": 17,
+        "SPI0_MOSI": 16,
+        "SPI0_SCK": 14,
         "WIRE1_SCL": 20,
         "WIRE1_SDA": 21,
         "WIRE2_SCL": 0,
@@ -295,6 +303,10 @@ BK72XX_BOARD_PINS = {
         "A0": 23,
     },
     "generic-bk7231n-qfn32-tuya": {
+        "SPI0_CS": 15,
+        "SPI0_MISO": 17,
+        "SPI0_MOSI": 16,
+        "SPI0_SCK": 14,
         "WIRE1_SCL": 20,
         "WIRE1_SDA": 21,
         "WIRE2_SCL": 0,
@@ -485,8 +497,7 @@ BK72XX_BOARD_PINS = {
     },
     "cb3s": {
         "WIRE1_SCL": 20,
-        "WIRE1_SDA_0": 21,
-        "WIRE1_SDA_1": 21,
+        "WIRE1_SDA": 21,
         "SERIAL1_RX": 10,
         "SERIAL1_TX": 11,
         "SERIAL2_TX": 0,
@@ -647,6 +658,10 @@ BK72XX_BOARD_PINS = {
         "A0": 23,
     },
     "generic-bk7252": {
+        "SPI0_CS": 15,
+        "SPI0_MISO": 17,
+        "SPI0_MOSI": 16,
+        "SPI0_SCK": 14,
         "WIRE1_SCL": 20,
         "WIRE1_SDA": 21,
         "WIRE2_SCL": 0,
@@ -1096,6 +1111,10 @@ BK72XX_BOARD_PINS = {
         "A0": 23,
     },
     "cb3se": {
+        "SPI0_CS": 15,
+        "SPI0_MISO": 17,
+        "SPI0_MOSI": 16,
+        "SPI0_SCK": 14,
         "WIRE2_SCL": 0,
         "WIRE2_SDA": 1,
         "SERIAL1_RX": 10,

esphome/components/bl0940/bl0940.cpp

@@ -182,7 +182,10 @@ void BL0940::recalibrate_() {
 
   ESP_LOGD(TAG,
            "Recalibrated reference values:\n"
-           "Voltage: %f\n, Current: %f\n, Power: %f\n, Energy: %f\n",
+           "  Voltage: %f\n"
+           "  Current: %f\n"
+           "  Power: %f\n"
+           "  Energy: %f",
            this->voltage_reference_cal_, this->current_reference_cal_, this->power_reference_cal_,
            this->energy_reference_cal_);
 }

esphome/components/bl0942/bl0942.cpp

@@ -46,16 +46,16 @@ static const uint32_t PKT_TIMEOUT_MS = 200;
 
 void BL0942::loop() {
   DataPacket buffer;
-  int avail = this->available();
+  size_t avail = this->available();
 
   if (!avail) {
     return;
   }
-  if (static_cast<size_t>(avail) < sizeof(buffer)) {
+  if (avail < sizeof(buffer)) {
     if (!this->rx_start_) {
       this->rx_start_ = millis();
     } else if (millis() > this->rx_start_ + PKT_TIMEOUT_MS) {
-      ESP_LOGW(TAG, "Junk on wire. Throwing away partial message (%d bytes)", avail);
+      ESP_LOGW(TAG, "Junk on wire. Throwing away partial message (%zu bytes)", avail);
       this->read_array((uint8_t *) &buffer, avail);
       this->rx_start_ = 0;
     }

esphome/components/bl0942/bl0942.h

@@ -59,10 +59,10 @@ namespace bl0942 {
 //
 // Which makes BL0952_EREF = BL0942_PREF * 3600000 / 419430.4
 
-static const float BL0942_PREF = 596;              // taken from tasmota
-static const float BL0942_UREF = 15873.35944299;   // should be 73989/1.218
-static const float BL0942_IREF = 251213.46469622;  // 305978/1.218
-static const float BL0942_EREF = 3304.61127328;    // Measured
+static const float BL0942_PREF = 623.0270705;  // calculated using UREF and IREF
+static const float BL0942_UREF = 15883.34116;  // calculated for (390k x 5 / 510R) voltage divider
+static const float BL0942_IREF = 251065.6814;  // calculated for 1mR shunt
+static const float BL0942_EREF = 5347.484240;  // calculated using UREF and IREF
 
 struct DataPacket {
   uint8_t frame_header;
@@ -86,11 +86,11 @@ enum LineFrequency : uint8_t {
 
 class BL0942 : public PollingComponent, public uart::UARTDevice {
  public:
-  void set_voltage_sensor(sensor::Sensor *voltage_sensor) { voltage_sensor_ = voltage_sensor; }
-  void set_current_sensor(sensor::Sensor *current_sensor) { current_sensor_ = current_sensor; }
-  void set_power_sensor(sensor::Sensor *power_sensor) { power_sensor_ = power_sensor; }
-  void set_energy_sensor(sensor::Sensor *energy_sensor) { energy_sensor_ = energy_sensor; }
-  void set_frequency_sensor(sensor::Sensor *frequency_sensor) { frequency_sensor_ = frequency_sensor; }
+  void set_voltage_sensor(sensor::Sensor *voltage_sensor) { this->voltage_sensor_ = voltage_sensor; }
+  void set_current_sensor(sensor::Sensor *current_sensor) { this->current_sensor_ = current_sensor; }
+  void set_power_sensor(sensor::Sensor *power_sensor) { this->power_sensor_ = power_sensor; }
+  void set_energy_sensor(sensor::Sensor *energy_sensor) { this->energy_sensor_ = energy_sensor; }
+  void set_frequency_sensor(sensor::Sensor *frequency_sensor) { this->frequency_sensor_ = frequency_sensor; }
   void set_line_freq(LineFrequency freq) { this->line_freq_ = freq; }
   void set_address(uint8_t address) { this->address_ = address; }
   void set_reset(bool reset) { this->reset_ = reset; }

esphome/components/ble_nus/ble_nus.cpp

@@ -87,7 +87,10 @@ void BLENUS::setup() {
   global_ble_nus = this;
 #ifdef USE_LOGGER
   if (logger::global_logger != nullptr && this->expose_log_) {
-    logger::global_logger->add_log_listener(this);
+    logger::global_logger->add_log_callback(
+        this, [](void *self, uint8_t level, const char *tag, const char *message, size_t message_len) {
+          static_cast<BLENUS *>(self)->on_log(level, tag, message, message_len);
+        });
   }
 #endif
 }

esphome/components/ble_nus/ble_nus.h

@@ -10,12 +10,7 @@
 
 namespace esphome::ble_nus {
 
-class BLENUS : public Component
-#ifdef USE_LOGGER
-    ,
-               public logger::LogListener
-#endif
-{
+class BLENUS : public Component {
   enum TxStatus {
     TX_DISABLED,
     TX_ENABLED,
@@ -29,7 +24,7 @@ class BLENUS : public Component
   size_t write_array(const uint8_t *data, size_t len);
   void set_expose_log(bool expose_log) { this->expose_log_ = expose_log; }
 #ifdef USE_LOGGER
-  void on_log(uint8_t level, const char *tag, const char *message, size_t message_len) override;
+  void on_log(uint8_t level, const char *tag, const char *message, size_t message_len);
 #endif
 
  protected:

esphome/components/bluetooth_proxy/bluetooth_proxy.h

@@ -23,9 +23,9 @@
 
 namespace esphome::bluetooth_proxy {
 
-static const esp_err_t ESP_GATT_NOT_CONNECTED = -1;
-static const int DONE_SENDING_SERVICES = -2;
-static const int INIT_SENDING_SERVICES = -3;
+static constexpr esp_err_t ESP_GATT_NOT_CONNECTED = -1;
+static constexpr int DONE_SENDING_SERVICES = -2;
+static constexpr int INIT_SENDING_SERVICES = -3;
 
 using namespace esp32_ble_client;
 
@@ -35,8 +35,8 @@ using namespace esp32_ble_client;
 // Version 3: New connection API
 // Version 4: Pairing support
 // Version 5: Cache clear support
-static const uint32_t LEGACY_ACTIVE_CONNECTIONS_VERSION = 5;
-static const uint32_t LEGACY_PASSIVE_ONLY_VERSION = 1;
+static constexpr uint32_t LEGACY_ACTIVE_CONNECTIONS_VERSION = 5;
+static constexpr uint32_t LEGACY_PASSIVE_ONLY_VERSION = 1;
 
 enum BluetoothProxyFeature : uint32_t {
   FEATURE_PASSIVE_SCAN = 1 << 0,

esphome/components/bme280_base/bme280_base.cpp

@@ -199,7 +199,6 @@ void BME280Component::dump_config() {
   LOG_SENSOR("  ", "Humidity", this->humidity_sensor_);
   ESP_LOGCONFIG(TAG, "    Oversampling: %s", oversampling_to_str(this->humidity_oversampling_));
 }
-float BME280Component::get_setup_priority() const { return setup_priority::DATA; }
 
 inline uint8_t oversampling_to_time(BME280Oversampling over_sampling) { return (1 << uint8_t(over_sampling)) >> 1; }
 

esphome/components/bme280_base/bme280_base.h

@@ -76,7 +76,6 @@ class BME280Component : public PollingComponent {
   // (In most use cases you won't need these)
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   void update() override;
 
  protected:

esphome/components/bme680/bme680.cpp

@@ -22,11 +22,11 @@ static const uint8_t BME680_REGISTER_CHIPID = 0xD0;
 
 static const uint8_t BME680_REGISTER_FIELD0 = 0x1D;
 
-const float BME680_GAS_LOOKUP_TABLE_1[16] PROGMEM = {0.0, 0.0, 0.0,  0.0,  0.0, -1.0, 0.0, -0.8,
-                                                     0.0, 0.0, -0.2, -0.5, 0.0, -1.0, 0.0, 0.0};
+constexpr float BME680_GAS_LOOKUP_TABLE_1[16] PROGMEM = {0.0, 0.0, 0.0,  0.0,  0.0, -1.0, 0.0, -0.8,
+                                                         0.0, 0.0, -0.2, -0.5, 0.0, -1.0, 0.0, 0.0};
 
-const float BME680_GAS_LOOKUP_TABLE_2[16] PROGMEM = {0.0,  0.0, 0.0, 0.0, 0.1, 0.7, 0.0, -0.8,
-                                                     -0.1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0};
+constexpr float BME680_GAS_LOOKUP_TABLE_2[16] PROGMEM = {0.0,  0.0, 0.0, 0.0, 0.1, 0.7, 0.0, -0.8,
+                                                         -0.1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0};
 
 [[maybe_unused]] static const char *oversampling_to_str(BME680Oversampling oversampling) {
   switch (oversampling) {
@@ -233,8 +233,6 @@ void BME680Component::dump_config() {
   }
 }
 
-float BME680Component::get_setup_priority() const { return setup_priority::DATA; }
-
 void BME680Component::update() {
   uint8_t meas_control = 0;  // No need to fetch, we're setting all fields
   meas_control |= (this->temperature_oversampling_ & 0b111) << 5;

esphome/components/bme680/bme680.h

@@ -99,7 +99,6 @@ class BME680Component : public PollingComponent, public i2c::I2CDevice {
   // (In most use cases you won't need these)
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   void update() override;
 
  protected:

esphome/components/bme680_bsec/__init__.py

@@ -89,8 +89,9 @@ async def to_code(config):
         var.set_state_save_interval(config[CONF_STATE_SAVE_INTERVAL].total_milliseconds)
     )
 
-    # Although this component does not use SPI, the BSEC library requires the SPI library
+    # Although this component does not use SPI/Wire directly, the BSEC library requires them
     cg.add_library("SPI", None)
+    cg.add_library("Wire", None)
 
     cg.add_define("USE_BSEC")
     cg.add_library("boschsensortec/BSEC Software Library", "1.6.1480")

esphome/components/bme680_bsec/bme680_bsec.cpp

@@ -181,8 +181,6 @@ void BME680BSECComponent::dump_config() {
   LOG_SENSOR("  ", "Breath VOC Equivalent", this->breath_voc_equivalent_sensor_);
 }
 
-float BME680BSECComponent::get_setup_priority() const { return setup_priority::DATA; }
-
 void BME680BSECComponent::loop() {
   this->run_();
 

esphome/components/bme680_bsec/bme680_bsec.h

@@ -7,6 +7,7 @@
 #include "esphome/core/preferences.h"
 #include "esphome/core/defines.h"
 #include <map>
+#include <queue>
 
 #ifdef USE_BSEC
 #include <bsec.h>
@@ -64,7 +65,6 @@ class BME680BSECComponent : public Component, public i2c::I2CDevice {
 
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   void loop() override;
 
  protected:

esphome/components/bme68x_bsec2/__init__.py

@@ -178,8 +178,11 @@ async def to_code_base(config):
     bsec2_arr = cg.progmem_array(config[CONF_RAW_DATA_ID], rhs)
     cg.add(var.set_bsec2_configuration(bsec2_arr, len(rhs)))
 
-    # Although this component does not use SPI, the BSEC2 Arduino library requires the SPI library
+    # The BSEC2 and BME68x Arduino libraries unconditionally include Wire.h and
+    # SPI.h in their source files, so these libraries must be available even though
+    # ESPHome uses its own I2C/SPI abstractions instead of the Arduino ones.
     if core.CORE.using_arduino:
+        cg.add_library("Wire", None)
         cg.add_library("SPI", None)
     cg.add_library(
         "BME68x Sensor library",

esphome/components/bme68x_bsec2/bme68x_bsec2.cpp

@@ -106,8 +106,6 @@ void BME68xBSEC2Component::dump_config() {
 #endif
 }
 
-float BME68xBSEC2Component::get_setup_priority() const { return setup_priority::DATA; }
-
 void BME68xBSEC2Component::loop() {
   this->run_();
 

esphome/components/bme68x_bsec2/bme68x_bsec2.h

@@ -48,7 +48,6 @@ class BME68xBSEC2Component : public Component {
  public:
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override;
   void loop() override;
 
   void set_algorithm_output(AlgorithmOutput algorithm_output) { this->algorithm_output_ = algorithm_output; }

esphome/components/bmi160/bmi160.cpp

@@ -263,7 +263,6 @@ void BMI160Component::update() {
 
   this->status_clear_warning();
 }
-float BMI160Component::get_setup_priority() const { return setup_priority::DATA; }
 
 }  // namespace bmi160
 }  // namespace esphome