Note which inflate session fields are borrowed

Also patch the compressor through the module under test rather than
the shared zlib module.

.github/workflows/stale.yml

@@ -33,7 +33,7 @@ jobs:
         and will be closed if no further activity occurs within 7 days.
 
         If you are the author of this PR, please leave a comment if you want
-        to keep it open. Also, please merge the latest dev branch into your
+        to keep it open. Also, please rebase your PR onto the latest dev
         branch to ensure that it's up to date with the latest changes.
 
         Thank you for your contribution!

docker/Dockerfile

@@ -22,7 +22,7 @@ RUN \
     -r /requirements.txt
 
 # Install the ESPHome Device Builder dashboard.
-RUN uv pip install --no-cache-dir esphome-device-builder==1.14.6
+RUN uv pip install --no-cache-dir esphome-device-builder==1.14.5
 
 RUN \
     platformio settings set enable_telemetry No \

esphome/__main__.py

@@ -1289,10 +1289,9 @@ def _choose_ota_platform(config: ConfigType, requested: str | None) -> str:
     The native API uses challenge-response auth with MD5/SHA256 hashing of a
     server-issued nonce, so the password is never sent over the wire; the
     ``web_server`` path uses HTTP Basic auth which transmits credentials in
-    cleartext over the LAN. (The native path also supports gzip compression
-    on ESP8266, where flash space is tight; on ESP32/RP2040/LibreTiny the
-    backend reports ``supports_compression() == false`` and the firmware is
-    sent uncompressed regardless of which platform is used.) Falls back to
+    cleartext over the LAN. (The native path also compresses the upload:
+    gzip on ESP8266 and RP2040, which inflate it at reboot, and a deflate
+    stream on ESP32/LibreTiny, which inflate it as it arrives.) Falls back to
     ``web_server`` only when that is the only available platform.
     """
     # Use a dict (insertion-ordered) instead of a list so error messages and

esphome/components/api/api.proto

@@ -77,7 +77,6 @@ service APIConnection {
   rpc serial_proxy_set_modem_pins(SerialProxySetModemPinsRequest) returns (void) {}
   rpc serial_proxy_get_modem_pins(SerialProxyGetModemPinsRequest) returns (void) {}
   rpc serial_proxy_request(SerialProxyRequest) returns (void) {}
-  rpc serial_proxy_set_mode(SerialProxySetModeRequest) returns (void) {}
 }
 
 
@@ -2727,8 +2726,7 @@ enum SerialProxyParity {
   SERIAL_PROXY_PARITY_ODD = 2;
 }
 
-// Configure UART parameters for a serial proxy instance. Only the subscribed client may
-// configure the port; others are refused with PORT_IN_USE (since API 1.17).
+// Configure UART parameters for a serial proxy instance
 message SerialProxyConfigureRequest {
   option (id) = 138;
   option (source) = SOURCE_CLIENT;
@@ -2754,8 +2752,7 @@ message SerialProxyDataReceived {
   bytes data = 2;               // Raw data received from the serial device
 }
 
-// Write data to a serial device. Only the subscribed client may write; writes from
-// others are ignored (since API 1.17).
+// Write data to a serial device
 message SerialProxyWriteRequest {
   option (id) = 140;
   option (source) = SOURCE_CLIENT;
@@ -2766,8 +2763,7 @@ message SerialProxyWriteRequest {
   bytes data = 2;               // Raw data to write to the serial device
 }
 
-// Set modem control pin states (RTS and DTR). Only the subscribed client may set them;
-// others are refused with PORT_IN_USE (since API 1.17).
+// Set modem control pin states (RTS and DTR)
 message SerialProxySetModemPinsRequest {
   option (id) = 141;
   option (source) = SOURCE_CLIENT;
@@ -2806,7 +2802,6 @@ enum SerialProxyRequestType {
   // error the device answers with INVALID_ARGUMENT.
   SERIAL_PROXY_REQUEST_TYPE_CONFIGURE = 3;      // Acknowledges a SerialProxyConfigureRequest
   SERIAL_PROXY_REQUEST_TYPE_SET_MODEM_PINS = 4; // Acknowledges a SerialProxySetModemPinsRequest
-  SERIAL_PROXY_REQUEST_TYPE_SET_MODE = 5;       // Acknowledges a SerialProxySetModeRequest (since API 1.17)
 }
 
 enum SerialProxyStatus {
@@ -2819,8 +2814,7 @@ enum SerialProxyStatus {
   SERIAL_PROXY_STATUS_INVALID_ARGUMENT = 6; // Invalid instance index or parameter value
 }
 
-// Generic request message for simple serial proxy operations. FLUSH requires an active
-// subscription; it is refused with PORT_IN_USE otherwise (since API 1.17).
+// Generic request message for simple serial proxy operations
 message SerialProxyRequest {
   option (id) = 144;
   option (source) = SOURCE_CLIENT;
@@ -2844,29 +2838,6 @@ message SerialProxyRequestResponse {
   string error_message = 4;            // Additional detail on failure (optional)
 }
 
-// How a port treats the bytes passing through it. RAW is a plain byte pipe; PROTOCOL
-// activates the port's protocol-aware tap (if one is configured), letting it observe
-// traffic and inject protocol bytes such as acknowledgements. Which protocol the tap
-// speaks is a property of the device configuration, discoverable from the tap
-// component's own API surface. A client that is about to flash firmware selects RAW
-// first, which definitively disables that injection.
-enum SerialProxyMode {
-  SERIAL_PROXY_MODE_RAW = 0;
-  SERIAL_PROXY_MODE_PROTOCOL = 1;
-}
-
-// Only the subscribed client may change the mode; any other caller -- including one that
-// never subscribed -- is refused with PORT_IN_USE. PROTOCOL is refused with NOT_SUPPORTED
-// when the port has no protocol-aware tap configured.
-message SerialProxySetModeRequest {
-  option (id) = 152;
-  option (source) = SOURCE_CLIENT;
-  option (ifdef) = "USE_SERIAL_PROXY";
-
-  uint32 instance = 1;
-  SerialProxyMode mode = 2;
-}
-
 // ==================== BLUETOOTH CONNECTION PARAMS ====================
 message BluetoothSetConnectionParamsRequest {
   option (id) = 145;

esphome/components/api/api_connection.cpp

@@ -1661,7 +1661,6 @@ void APIConnection::on_serial_proxy_request(const SerialProxyRequest &msg) {
       break;
     case enums::SERIAL_PROXY_REQUEST_TYPE_CONFIGURE:
     case enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODEM_PINS:
-    case enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODE:
       // Response-only discriminators; never valid in a request
       ESP_LOGW(TAG, "Response-only serial proxy request type: %" PRIu32, static_cast<uint32_t>(msg.type));
       status = enums::SERIAL_PROXY_STATUS_INVALID_ARGUMENT;
@@ -1674,19 +1673,6 @@ void APIConnection::on_serial_proxy_request(const SerialProxyRequest &msg) {
   send_serial_proxy_ack(this, msg.instance, msg.type, status);
 }
 
-void APIConnection::on_serial_proxy_set_mode_request(const SerialProxySetModeRequest &msg) {
-  auto &proxies = App.get_serial_proxies();
-  if (msg.instance >= proxies.size()) {
-    ESP_LOGW(TAG, "Serial proxy instance %" PRIu32 " out of range", msg.instance);
-    send_serial_proxy_ack(this, msg.instance, enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODE,
-                          enums::SERIAL_PROXY_STATUS_INVALID_ARGUMENT);
-    return;
-  }
-  serial_proxy::SerialProxyResult result = proxies[msg.instance]->set_mode_from_client(this, msg.mode);
-  send_serial_proxy_ack(this, msg.instance, enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODE,
-                        serial_proxy_result_to_status(result));
-}
-
 void APIConnection::send_serial_proxy_data(const SerialProxyDataReceived &msg) {
   if (!this->send_message(msg)) {
     ESP_LOGV(TAG, "Serial proxy data dropped, TCP buffer full");
@@ -1813,7 +1799,7 @@ bool APIConnection::send_hello_response_(const HelloRequest &msg) {
 
   HelloResponse resp;
   resp.api_version_major = 1;
-  resp.api_version_minor = 17;
+  resp.api_version_minor = 16;
   // Send only the version string - the client only logs this for debugging and doesn't use it otherwise
   resp.server_info = ESPHOME_VERSION_REF;
   resp.name = StringRef(App.get_name());
@@ -2269,12 +2255,7 @@ bool APIConnection::send_message_(uint32_t payload_size, uint16_t message_type,
   // Capacity reserved above, cannot fail
   (void) shared_buf.resize(write_start + payload_size);
   ProtoWriteBuffer buffer{&shared_buf, write_start};
-  uint8_t *end = encode_fn(msg, buffer PROTO_ENCODE_DEBUG_INIT(&shared_buf));
-#ifdef ESPHOME_DEBUG_API
-  assert(end == shared_buf.data() + shared_buf.size());
-#else
-  (void) end;
-#endif
+  encode_fn(msg, buffer PROTO_ENCODE_DEBUG_INIT(&shared_buf));
   return this->send_buffer(ProtoWriteBuffer{&shared_buf}, message_type);
 }
 // encode_to_buffer is defined inline in api_connection.h (ESPHOME_ALWAYS_INLINE)

esphome/components/api/api_connection.h

@@ -244,7 +244,6 @@ class APIConnection final : public APIServerConnectionBase {
   void on_serial_proxy_set_modem_pins_request(const SerialProxySetModemPinsRequest &msg);
   void on_serial_proxy_get_modem_pins_request(const SerialProxyGetModemPinsRequest &msg);
   void on_serial_proxy_request(const SerialProxyRequest &msg);
-  void on_serial_proxy_set_mode_request(const SerialProxySetModeRequest &msg);
   void send_serial_proxy_data(const SerialProxyDataReceived &msg);
 #endif
 
@@ -346,7 +345,11 @@ class APIConnection final : public APIServerConnectionBase {
   /// Returns false as soon as the TCP buffer is full. Marked nodiscard so we
   /// have no silent failures: every caller must handle (or log) a refusal.
   template<typename T> [[nodiscard]] bool send_message(const T &msg) {
-    return this->send_message_(T::calc_size_msg(&msg), T::MESSAGE_TYPE, &T::encode_msg, &msg);
+    if constexpr (T::ESTIMATED_SIZE == 0) {
+      return this->send_message_(0, T::MESSAGE_TYPE, &encode_msg_noop, &msg);
+    } else {
+      return this->send_message_(msg.calculate_size(), T::MESSAGE_TYPE, &proto_encode_msg<T>, &msg);
+    }
   }
 
   /// Clear the shared write buffer and reserve space for the first message.
@@ -402,6 +405,16 @@ class APIConnection final : public APIServerConnectionBase {
   void process_state_subscriptions_();
 #endif
 
+  // Size thunk — converts void* back to concrete type for direct calculate_size() call
+  template<typename T> static uint32_t calc_size(const void *msg) {
+    return static_cast<const T *>(msg)->calculate_size();
+  }
+
+  // Shared no-op encode thunk for empty messages (ESTIMATED_SIZE == 0)
+  static uint8_t *encode_msg_noop(const void *, ProtoWriteBuffer &buf PROTO_ENCODE_DEBUG_PARAM) {
+    return buf.get_pos();
+  }
+
   // Non-template buffer management for send_message
   bool send_message_(uint32_t payload_size, uint16_t message_type, MessageEncodeFn encode_fn, const void *msg);
 
@@ -420,7 +433,11 @@ class APIConnection final : public APIServerConnectionBase {
   // Hot paths (state/info) go through fill_and_encode_entity_state/info instead.
   // batch_message_type_ is already set by dispatch_message_ before reaching here.
   template<typename T> static uint16_t encode_message_to_buffer(T &msg, APIConnection *conn, uint32_t remaining_size) {
-    return encode_to_buffer_slow(T::calc_size_msg(&msg), &T::encode_msg, &msg, conn, remaining_size);
+    if constexpr (T::ESTIMATED_SIZE == 0) {
+      return encode_to_buffer_slow(0, &encode_msg_noop, &msg, conn, remaining_size);
+    } else {
+      return encode_to_buffer_slow(msg.calculate_size(), &proto_encode_msg<T>, &msg, conn, remaining_size);
+    }
   }
 
   // Non-template core — fills state fields and encodes
@@ -432,7 +449,7 @@ class APIConnection final : public APIServerConnectionBase {
   template<typename T>
   static uint16_t fill_and_encode_entity_state(EntityBase *entity, T &msg, APIConnection *conn,
                                                uint32_t remaining_size) {
-    return fill_and_encode_entity_state(entity, msg, &T::calc_size_msg, &T::encode_msg, conn, remaining_size);
+    return fill_and_encode_entity_state(entity, msg, &calc_size<T>, &proto_encode_msg<T>, conn, remaining_size);
   }
 
   // Non-template core — fills info fields, allocates buffers, and encodes
@@ -444,7 +461,7 @@ class APIConnection final : public APIServerConnectionBase {
   template<typename T>
   static uint16_t fill_and_encode_entity_info(EntityBase *entity, T &msg, APIConnection *conn,
                                               uint32_t remaining_size) {
-    return fill_and_encode_entity_info(entity, msg, &T::calc_size_msg, &T::encode_msg, conn, remaining_size);
+    return fill_and_encode_entity_info(entity, msg, &calc_size<T>, &proto_encode_msg<T>, conn, remaining_size);
   }
 
   // Non-template core — fills device_class, then delegates to fill_and_encode_entity_info
@@ -458,8 +475,8 @@ class APIConnection final : public APIServerConnectionBase {
   static uint16_t fill_and_encode_entity_info_with_device_class(EntityBase *entity, T &msg,
                                                                 StringRef &device_class_field, APIConnection *conn,
                                                                 uint32_t remaining_size) {
-    return fill_and_encode_entity_info_with_device_class(entity, msg, device_class_field, &T::calc_size_msg,
-                                                         &T::encode_msg, conn, remaining_size);
+    return fill_and_encode_entity_info_with_device_class(entity, msg, device_class_field, &calc_size<T>,
+                                                         &proto_encode_msg<T>, conn, remaining_size);
   }
 
 #ifdef USE_VOICE_ASSISTANT

esphome/components/api/api_connection_buffer.h

@@ -46,13 +46,7 @@ inline uint16_t ESPHOME_ALWAYS_INLINE APIConnection::encode_to_buffer(uint32_t c
     return 0;
   }
   ProtoWriteBuffer buffer{&shared_buf, shared_buf.size() - calculated_size};
-  uint8_t *end = encode_fn(msg, buffer PROTO_ENCODE_DEBUG_INIT(&shared_buf));
-#ifdef ESPHOME_DEBUG_API
-  // A body that writes fewer bytes than calculate_size() promised would ship stale buffer bytes
-  assert(end == shared_buf.data() + shared_buf.size());
-#else
-  (void) end;
-#endif
+  encode_fn(msg, buffer PROTO_ENCODE_DEBUG_INIT(&shared_buf));
 
   return total_calculated_size;
 }

esphome/components/api/api_pb2_dump.cpp

@@ -854,8 +854,6 @@ template<> const char *proto_enum_to_string<enums::SerialProxyRequestType>(enums
       return ESPHOME_PSTR("SERIAL_PROXY_REQUEST_TYPE_CONFIGURE");
     case enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODEM_PINS:
       return ESPHOME_PSTR("SERIAL_PROXY_REQUEST_TYPE_SET_MODEM_PINS");
-    case enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODE:
-      return ESPHOME_PSTR("SERIAL_PROXY_REQUEST_TYPE_SET_MODE");
     default:
       return ESPHOME_PSTR("UNKNOWN");
   }
@@ -880,16 +878,6 @@ template<> const char *proto_enum_to_string<enums::SerialProxyStatus>(enums::Ser
       return ESPHOME_PSTR("UNKNOWN");
   }
 }
-template<> const char *proto_enum_to_string<enums::SerialProxyMode>(enums::SerialProxyMode value) {
-  switch (value) {
-    case enums::SERIAL_PROXY_MODE_RAW:
-      return ESPHOME_PSTR("SERIAL_PROXY_MODE_RAW");
-    case enums::SERIAL_PROXY_MODE_PROTOCOL:
-      return ESPHOME_PSTR("SERIAL_PROXY_MODE_PROTOCOL");
-    default:
-      return ESPHOME_PSTR("UNKNOWN");
-  }
-}
 #endif
 
 const char *HelloRequest::dump_to(DumpBuffer &out) const {
@@ -2817,12 +2805,6 @@ const char *SerialProxyRequestResponse::dump_to(DumpBuffer &out) const {
   dump_field(out, ESPHOME_PSTR("error_message"), this->error_message);
   return out.c_str();
 }
-const char *SerialProxySetModeRequest::dump_to(DumpBuffer &out) const {
-  MessageDumpHelper helper(out, ESPHOME_PSTR("SerialProxySetModeRequest"));
-  dump_field(out, ESPHOME_PSTR("instance"), this->instance);
-  dump_field(out, ESPHOME_PSTR("mode"), static_cast<enums::SerialProxyMode>(this->mode));
-  return out.c_str();
-}
 #endif
 #ifdef USE_BLUETOOTH_PROXY_CONNECTIONS
 const char *BluetoothSetConnectionParamsRequest::dump_to(DumpBuffer &out) const {

esphome/components/api/api_pb2_service.cpp

@@ -712,17 +712,6 @@ void APIConnection::read_message_(uint32_t msg_size, uint32_t msg_type, const ui
       this->on_device_capabilities_request();
       break;
     }
-#ifdef USE_SERIAL_PROXY
-    case SerialProxySetModeRequest::MESSAGE_TYPE: {
-      SerialProxySetModeRequest msg;
-      msg.decode(msg_data, msg_size);
-#ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_serial_proxy_set_mode_request"), msg);
-#endif
-      this->on_serial_proxy_set_mode_request(msg);
-      break;
-    }
-#endif
     default:
       break;
   }

esphome/components/api/api_pb2_service.h

@@ -235,9 +235,6 @@ class APIServerConnectionBase {
   void on_serial_proxy_request(const SerialProxyRequest &value){};
 #endif
 
-#ifdef USE_SERIAL_PROXY
-  void on_serial_proxy_set_mode_request(const SerialProxySetModeRequest &value){};
-#endif
 #ifdef USE_BLUETOOTH_PROXY_CONNECTIONS
   void on_bluetooth_set_connection_params_request(const BluetoothSetConnectionParamsRequest &value){};
 #endif

esphome/components/api/proto.h

@@ -287,31 +287,19 @@ class ProtoWriteBuffer {
   uint8_t *pos_;
 };
 
-// A four byte unaligned store is a memcpy call on ESP-IDF (-fno-builtin-memcpy) and on ARM cores without
-// unaligned access (Cortex-M0+, ARM9), so those targets share one outlined byte store helper per fixed32
-// field. Elsewhere the write inlines to a single store, or on ESP8266 to a few stores that measured
-// faster than a call, so it stays inline.
-#if defined(USE_ESP32) || (defined(__arm__) && !defined(__ARM_FEATURE_UNALIGNED))
-#define PROTO_OUTLINE_FOR_SIZE __attribute__((noinline))
-#define PROTO_FIXED32_BYTE_STORES true
-#else
-#define PROTO_OUTLINE_FOR_SIZE inline
-#define PROTO_FIXED32_BYTE_STORES false
-#endif
-
 // Varint encoding thresholds — used by both proto_encode_* free functions and ProtoSize.
 constexpr uint32_t VARINT_MAX_1_BYTE = 1 << 7;   // 128
 constexpr uint32_t VARINT_MAX_2_BYTE = 1 << 14;  // 16384
 
-/// Static encode helpers for the generated encode bodies. Each takes the write cursor by value and
-/// returns it advanced, so outlined calls at -Os chain through the return register instead of a
-/// stack slot. Helpers without a _force suffix skip fields holding the proto3 default.
+/// Static encode helpers for generated encode() functions.
+/// Generated code hoists buffer.pos_ into a local uint8_t *__restrict__ pos,
+/// then calls these methods which take pos by reference. No struct, no overhead.
+/// For sub-messages, pos is synced back to buffer before the call and reloaded after.
 class ProtoEncode {
  public:
   /// Write a multi-byte varint directly through a pos pointer.
   template<typename T>
-  [[nodiscard]] static inline uint8_t *encode_varint_raw_loop(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                              T value) {
+  static inline void encode_varint_raw_loop(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, T value) {
     do {
       PROTO_ENCODE_CHECK_BOUNDS(pos, 1);
       *pos++ = static_cast<uint8_t>(value | 0x80);
@@ -319,49 +307,48 @@ class ProtoEncode {
     } while (value > 0x7F);
     PROTO_ENCODE_CHECK_BOUNDS(pos, 1);
     *pos++ = static_cast<uint8_t>(value);
-    return pos;
   }
-  [[nodiscard]] static inline uint8_t *ESPHOME_ALWAYS_INLINE
-  encode_varint_raw(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM, uint32_t value) {
+  static inline void ESPHOME_ALWAYS_INLINE encode_varint_raw(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM,
+                                                             uint32_t value) {
     if (value < VARINT_MAX_1_BYTE) [[likely]] {
       PROTO_ENCODE_CHECK_BOUNDS(pos, 1);
       *pos++ = static_cast<uint8_t>(value);
-      return pos;
+      return;
     }
-    return encode_varint_raw_loop(pos PROTO_ENCODE_DEBUG_ARG, value);
+    encode_varint_raw_loop(pos PROTO_ENCODE_DEBUG_ARG, value);
   }
   /// Encode a varint that is expected to be 1-2 bytes (e.g. zigzag RSSI, small lengths).
-  [[nodiscard]] static inline uint8_t *ESPHOME_ALWAYS_INLINE
-  encode_varint_raw_short(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM, uint32_t value) {
+  static inline void ESPHOME_ALWAYS_INLINE encode_varint_raw_short(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM,
+                                                                   uint32_t value) {
     if (value < VARINT_MAX_1_BYTE) [[likely]] {
       PROTO_ENCODE_CHECK_BOUNDS(pos, 1);
       *pos++ = static_cast<uint8_t>(value);
-      return pos;
+      return;
     }
     if (value < VARINT_MAX_2_BYTE) [[likely]] {
       PROTO_ENCODE_CHECK_BOUNDS(pos, 2);
       *pos++ = static_cast<uint8_t>(value | 0x80);
       *pos++ = static_cast<uint8_t>(value >> 7);
-      return pos;
+      return;
     }
-    return encode_varint_raw_loop(pos PROTO_ENCODE_DEBUG_ARG, value);
+    encode_varint_raw_loop(pos PROTO_ENCODE_DEBUG_ARG, value);
   }
-  [[nodiscard]] static inline uint8_t *ESPHOME_ALWAYS_INLINE
-  encode_varint_raw_64(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM, uint64_t value) {
+  static inline void ESPHOME_ALWAYS_INLINE encode_varint_raw_64(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM,
+                                                                uint64_t value) {
     if (value < VARINT_MAX_1_BYTE) [[likely]] {
       PROTO_ENCODE_CHECK_BOUNDS(pos, 1);
       *pos++ = static_cast<uint8_t>(value);
-      return pos;
+      return;
     }
-    return encode_varint_raw_loop(pos PROTO_ENCODE_DEBUG_ARG, value);
+    encode_varint_raw_loop(pos PROTO_ENCODE_DEBUG_ARG, value);
   }
   /// Encode a 48-bit MAC address (stored in a uint64) as varint.
   /// Real MAC addresses occupy the full 48 bits (OUI in upper 24), so the
   /// fast path -- any non-zero bit in the top 6 of 48 -- emits exactly 7 bytes
   /// with no per-byte branch. Falls back to the general loop otherwise.
   /// Caller must guarantee value fits in 48 bits (checked in debug builds).
-  [[nodiscard]] static inline uint8_t *ESPHOME_ALWAYS_INLINE
-  encode_varint_raw_48bit(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM, uint64_t value) {
+  static inline void ESPHOME_ALWAYS_INLINE encode_varint_raw_48bit(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM,
+                                                                   uint64_t value) {
 #ifdef ESPHOME_DEBUG_API
     assert(value < (1ULL << (MAC_ADDRESS_SIZE * 8)) && "encode_varint_raw_48bit: value exceeds 48 bits");
 #endif
@@ -376,39 +363,38 @@ class ProtoEncode {
       pos[4] = static_cast<uint8_t>((value >> 28) | 0x80);
       pos[5] = static_cast<uint8_t>((value >> 35) | 0x80);
       pos[6] = static_cast<uint8_t>(value >> 42);
-      return pos + 7;
+      pos += 7;
+      return;
     }
-    return encode_varint_raw_64(pos PROTO_ENCODE_DEBUG_ARG, value);
+    encode_varint_raw_64(pos PROTO_ENCODE_DEBUG_ARG, value);
   }
-  [[nodiscard]] static inline uint8_t *ESPHOME_ALWAYS_INLINE
-  encode_field_raw(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id, uint32_t type) {
-    return encode_varint_raw(pos PROTO_ENCODE_DEBUG_ARG, (field_id << 3) | type);
+  static inline void ESPHOME_ALWAYS_INLINE encode_field_raw(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM,
+                                                            uint32_t field_id, uint32_t type) {
+    encode_varint_raw(pos PROTO_ENCODE_DEBUG_ARG, (field_id << 3) | type);
   }
   /// Write a single precomputed tag byte. Tag must be < 128.
-  [[nodiscard]] static inline uint8_t *ESPHOME_ALWAYS_INLINE
-  write_raw_byte(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM, uint8_t b) {
+  static inline void ESPHOME_ALWAYS_INLINE write_raw_byte(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM,
+                                                          uint8_t b) {
     PROTO_ENCODE_CHECK_BOUNDS(pos, 1);
     *pos++ = b;
-    return pos;
   }
   /// Reserve one byte for later backpatch (e.g., sub-message length).
   /// Advances pos past the reserved byte without writing a value.
-  [[nodiscard]] static inline uint8_t *ESPHOME_ALWAYS_INLINE
-  reserve_byte(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM) {
+  static inline void ESPHOME_ALWAYS_INLINE reserve_byte(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM) {
     PROTO_ENCODE_CHECK_BOUNDS(pos, 1);
-    return pos + 1;
+    pos++;
   }
   /// Write raw bytes to the buffer (no tag, no length prefix).
-  [[nodiscard]] static inline uint8_t *ESPHOME_ALWAYS_INLINE
-  encode_raw(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM, const void *data, size_t len) {
+  static inline void ESPHOME_ALWAYS_INLINE encode_raw(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM,
+                                                      const void *data, size_t len) {
     PROTO_ENCODE_CHECK_BOUNDS(pos, len);
     std::memcpy(pos, data, len);
-    return pos + len;
+    pos += len;
   }
   /// Encode tag + 1-byte length + raw string data. For strings with max_data_length < 128.
   /// Tag must be a single-byte varint (< 128). Always encodes (no zero check).
-  [[nodiscard]] static inline uint8_t *encode_short_string_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                                 uint8_t tag, const StringRef &ref) {
+  static inline void encode_short_string_force(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint8_t tag,
+                                               const StringRef &ref) {
 #ifdef ESPHOME_DEBUG_API
     assert(ref.size() < 128 && "encode_short_string_force: string exceeds max_data_length < 128");
 #endif
@@ -416,191 +402,137 @@ class ProtoEncode {
     pos[0] = tag;
     pos[1] = static_cast<uint8_t>(ref.size());
     std::memcpy(pos + 2, ref.c_str(), ref.size());
-    return pos + 2 + ref.size();
+    pos += 2 + ref.size();
   }
-  /// Write a precomputed tag byte + 32-bit value. Outlined on embedded: one copy beats inline stores per field.
-  [[nodiscard]] static PROTO_OUTLINE_FOR_SIZE uint8_t *write_tag_and_fixed32(
-      uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM, uint8_t tag, uint32_t value) {
+  /// Write a precomputed tag byte + 32-bit value in one operation.
+  static inline void ESPHOME_ALWAYS_INLINE write_tag_and_fixed32(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM,
+                                                                 uint8_t tag, uint32_t value) {
     PROTO_ENCODE_CHECK_BOUNDS(pos, 5);
     pos[0] = tag;
-    write_fixed32_le(pos + 1, value);
-    return pos + 5;
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+    std::memcpy(pos + 1, &value, 4);
+#else
+    pos[1] = static_cast<uint8_t>(value & 0xFF);
+    pos[2] = static_cast<uint8_t>((value >> 8) & 0xFF);
+    pos[3] = static_cast<uint8_t>((value >> 16) & 0xFF);
+    pos[4] = static_cast<uint8_t>((value >> 24) & 0xFF);
+#endif
+    pos += 5;
   }
-  [[nodiscard]] static inline uint8_t *encode_string_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                           uint32_t field_id, const char *string, size_t len) {
-    pos = encode_field_raw(pos PROTO_ENCODE_DEBUG_ARG, field_id, 2);  // type 2: Length-delimited string
+  static inline void encode_string(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id,
+                                   const char *string, size_t len, bool force = false) {
+    if (len == 0 && !force)
+      return;
+    encode_field_raw(pos PROTO_ENCODE_DEBUG_ARG, field_id, 2);  // type 2: Length-delimited string
     // NOLINTNEXTLINE(readability-inconsistent-ifelse-braces) -- false positive on [[likely]] attribute
     if (len < VARINT_MAX_1_BYTE) [[likely]] {
       PROTO_ENCODE_CHECK_BOUNDS(pos, 1 + len);
       *pos++ = static_cast<uint8_t>(len);
     } else {
-      pos = encode_varint_raw_loop(pos PROTO_ENCODE_DEBUG_ARG, len);
+      encode_varint_raw_loop(pos PROTO_ENCODE_DEBUG_ARG, len);
       PROTO_ENCODE_CHECK_BOUNDS(pos, len);
     }
     std::memcpy(pos, string, len);
-    return pos + len;
+    pos += len;
   }
-  [[nodiscard]] static inline uint8_t *encode_string(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                     uint32_t field_id, const char *string, size_t len) {
-    if (len == 0)
-      return pos;
-    return encode_string_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, string, len);
+  static inline void encode_string(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id,
+                                   const std::string &value, bool force = false) {
+    encode_string(pos PROTO_ENCODE_DEBUG_ARG, field_id, value.data(), value.size(), force);
   }
-  [[nodiscard]] static inline uint8_t *encode_string_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                           uint32_t field_id, const std::string &value) {
-    return encode_string_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, value.data(), value.size());
+  static inline void encode_string(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id,
+                                   const StringRef &ref, bool force = false) {
+    encode_string(pos PROTO_ENCODE_DEBUG_ARG, field_id, ref.c_str(), ref.size(), force);
   }
-  [[nodiscard]] static inline uint8_t *encode_string(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                     uint32_t field_id, const StringRef &ref) {
-    return encode_string(pos PROTO_ENCODE_DEBUG_ARG, field_id, ref.c_str(), ref.size());
+  static inline void encode_bytes(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id,
+                                  const uint8_t *data, size_t len, bool force = false) {
+    encode_string(pos PROTO_ENCODE_DEBUG_ARG, field_id, reinterpret_cast<const char *>(data), len, force);
   }
-  [[nodiscard]] static inline uint8_t *encode_string_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                           uint32_t field_id, const StringRef &ref) {
-    return encode_string_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, ref.c_str(), ref.size());
+  static inline void encode_uint32(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id,
+                                   uint32_t value, bool force = false) {
+    if (value == 0 && !force)
+      return;
+    encode_field_raw(pos PROTO_ENCODE_DEBUG_ARG, field_id, 0);
+    encode_varint_raw(pos PROTO_ENCODE_DEBUG_ARG, value);
   }
-  [[nodiscard]] static inline uint8_t *encode_bytes(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                    uint32_t field_id, const uint8_t *data, size_t len) {
-    return encode_string(pos PROTO_ENCODE_DEBUG_ARG, field_id, reinterpret_cast<const char *>(data), len);
+  static inline void encode_uint64(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id,
+                                   uint64_t value, bool force = false) {
+    if (value == 0 && !force)
+      return;
+    encode_field_raw(pos PROTO_ENCODE_DEBUG_ARG, field_id, 0);
+    encode_varint_raw_64(pos PROTO_ENCODE_DEBUG_ARG, value);
   }
-  [[nodiscard]] static inline uint8_t *encode_bytes_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                          uint32_t field_id, const uint8_t *data, size_t len) {
-    return encode_string_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, reinterpret_cast<const char *>(data), len);
-  }
-  [[nodiscard]] static inline uint8_t *encode_uint32_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                           uint32_t field_id, uint32_t value) {
-    pos = encode_field_raw(pos PROTO_ENCODE_DEBUG_ARG, field_id, 0);
-    return encode_varint_raw(pos PROTO_ENCODE_DEBUG_ARG, value);
-  }
-  [[nodiscard]] static inline uint8_t *encode_uint32(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                     uint32_t field_id, uint32_t value) {
-    if (value == 0)
-      return pos;
-    return encode_uint32_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, value);
-  }
-  [[nodiscard]] static inline uint8_t *encode_uint64_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                           uint32_t field_id, uint64_t value) {
-    pos = encode_field_raw(pos PROTO_ENCODE_DEBUG_ARG, field_id, 0);
-    return encode_varint_raw_64(pos PROTO_ENCODE_DEBUG_ARG, value);
-  }
-  [[nodiscard]] static inline uint8_t *encode_uint64(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                     uint32_t field_id, uint64_t value) {
-    if (value == 0)
-      return pos;
-    return encode_uint64_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, value);
-  }
-  [[nodiscard]] static inline uint8_t *encode_bool_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                         uint32_t field_id, bool value) {
-    pos = encode_field_raw(pos PROTO_ENCODE_DEBUG_ARG, field_id, 0);
+  static inline void encode_bool(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id, bool value,
+                                 bool force = false) {
+    if (!value && !force)
+      return;
+    encode_field_raw(pos PROTO_ENCODE_DEBUG_ARG, field_id, 0);
     PROTO_ENCODE_CHECK_BOUNDS(pos, 1);
     *pos++ = value ? 0x01 : 0x00;
-    return pos;
   }
-  [[nodiscard]] static inline uint8_t *encode_bool(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                   uint32_t field_id, bool value) {
-    if (!value)
-      return pos;
-    return encode_bool_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, value);
-  }
-  /// Tag + fixed32 for multi-byte tags; single-byte tags use write_tag_and_fixed32.
-  [[nodiscard]] static PROTO_OUTLINE_FOR_SIZE uint8_t *encode_fixed32_force(
-      uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id, uint32_t value) {
-    pos = encode_field_raw(pos PROTO_ENCODE_DEBUG_ARG, field_id, 5);
+  static inline void encode_fixed32(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id,
+                                    uint32_t value, bool force = false) {
+    if (value == 0 && !force)
+      return;
+    encode_field_raw(pos PROTO_ENCODE_DEBUG_ARG, field_id, 5);
     PROTO_ENCODE_CHECK_BOUNDS(pos, 4);
-    write_fixed32_le(pos, value);
-    return pos + 4;
-  }
-  [[nodiscard]] static inline uint8_t *encode_fixed32(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                      uint32_t field_id, uint32_t value) {
-    if (value == 0)
-      return pos;
-    return encode_fixed32_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, value);
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+    std::memcpy(pos, &value, 4);
+    pos += 4;
+#else
+    *pos++ = (value >> 0) & 0xFF;
+    *pos++ = (value >> 8) & 0xFF;
+    *pos++ = (value >> 16) & 0xFF;
+    *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
   // 32-bit microcontrollers where 64-bit operations are expensive. If 64-bit support
   // is needed in the future, the necessary encoding/decoding functions must be added.
-  [[nodiscard]] static inline uint8_t *encode_float(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                    uint32_t field_id, float value) {
-    return encode_fixed32(pos PROTO_ENCODE_DEBUG_ARG, field_id, float_to_raw(value));
+  static inline void encode_float(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id, float value,
+                                  bool force = false) {
+    uint32_t raw = float_to_raw(value);
+    if (raw == 0 && !force)
+      return;
+    encode_fixed32(pos PROTO_ENCODE_DEBUG_ARG, field_id, raw);
   }
-  [[nodiscard]] static inline uint8_t *encode_float_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                          uint32_t field_id, float value) {
-    return encode_fixed32_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, float_to_raw(value));
-  }
-  [[nodiscard]] static inline uint8_t *encode_int32_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                          uint32_t field_id, int32_t value) {
+  static inline void encode_int32(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id, int32_t value,
+                                  bool force = false) {
     if (value < 0) {
       // negative int32 is always 10 byte long
-      return encode_uint64_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, static_cast<uint64_t>(value));
+      encode_uint64(pos PROTO_ENCODE_DEBUG_ARG, field_id, static_cast<uint64_t>(value), force);
+      return;
     }
-    return encode_uint32_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, static_cast<uint32_t>(value));
+    encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, field_id, static_cast<uint32_t>(value), force);
   }
-  [[nodiscard]] static inline uint8_t *encode_int32(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                    uint32_t field_id, int32_t value) {
-    if (value == 0)
-      return pos;
-    return encode_int32_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, value);
+  static inline void encode_int64(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id, int64_t value,
+                                  bool force = false) {
+    encode_uint64(pos PROTO_ENCODE_DEBUG_ARG, field_id, static_cast<uint64_t>(value), force);
   }
-  [[nodiscard]] static inline uint8_t *encode_int64(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                    uint32_t field_id, int64_t value) {
-    return encode_uint64(pos PROTO_ENCODE_DEBUG_ARG, field_id, static_cast<uint64_t>(value));
+  static inline void encode_sint32(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id,
+                                   int32_t value, bool force = false) {
+    encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, field_id, encode_zigzag32(value), force);
   }
-  [[nodiscard]] static inline uint8_t *encode_int64_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                          uint32_t field_id, int64_t value) {
-    return encode_uint64_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, static_cast<uint64_t>(value));
+  static inline void encode_sint64(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, uint32_t field_id,
+                                   int64_t value, bool force = false) {
+    encode_uint64(pos PROTO_ENCODE_DEBUG_ARG, field_id, encode_zigzag64(value), force);
   }
-  [[nodiscard]] static inline uint8_t *encode_sint32(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                     uint32_t field_id, int32_t value) {
-    return encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, field_id, encode_zigzag32(value));
-  }
-  [[nodiscard]] static inline uint8_t *encode_sint32_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                           uint32_t field_id, int32_t value) {
-    return encode_uint32_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, encode_zigzag32(value));
-  }
-  [[nodiscard]] static inline uint8_t *encode_sint64(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                     uint32_t field_id, int64_t value) {
-    return encode_uint64(pos PROTO_ENCODE_DEBUG_ARG, field_id, encode_zigzag64(value));
-  }
-  [[nodiscard]] static inline uint8_t *encode_sint64_force(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                           uint32_t field_id, int64_t value) {
-    return encode_uint64_force(pos PROTO_ENCODE_DEBUG_ARG, field_id, encode_zigzag64(value));
-  }
-  /// Sub-message encoding: sync pos to buffer, delegate, read the cursor back.
+  /// Sub-message encoding: sync pos to buffer, delegate, get pos from return value.
   template<typename T>
-  [[nodiscard]] static inline uint8_t *encode_sub_message(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                          ProtoWriteBuffer &buffer, uint32_t field_id, const T &value) {
+  static inline void encode_sub_message(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM, ProtoWriteBuffer &buffer,
+                                        uint32_t field_id, const T &value) {
     buffer.set_pos(pos);
     buffer.encode_sub_message(field_id, value);
-    return buffer.get_pos();
+    pos = buffer.get_pos();
   }
   template<typename T>
-  [[nodiscard]] static inline uint8_t *encode_optional_sub_message(uint8_t *__restrict__ pos PROTO_ENCODE_DEBUG_PARAM,
-                                                                   ProtoWriteBuffer &buffer, uint32_t field_id,
-                                                                   const T &value) {
+  static inline void encode_optional_sub_message(uint8_t *__restrict__ &pos PROTO_ENCODE_DEBUG_PARAM,
+                                                 ProtoWriteBuffer &buffer, uint32_t field_id, const T &value) {
     buffer.set_pos(pos);
     buffer.encode_optional_sub_message(field_id, value);
-    return buffer.get_pos();
-  }
-
- private:
-  /// Unaligned little endian store of four bytes: byte stores where the outlined helper lives (ESP-IDF, ARM
-  /// without unaligned access), otherwise a memcpy the compiler folds into one store. Callers bounds check
-  /// and advance the cursor themselves.
-  static inline void ESPHOME_ALWAYS_INLINE write_fixed32_le(uint8_t *__restrict__ pos, uint32_t value) {
-    if constexpr (PROTO_FIXED32_BYTE_STORES) {
-      // Spelled out so the outlined helper does not itself become a memcpy call
-      pos[0] = static_cast<uint8_t>(value);
-      pos[1] = static_cast<uint8_t>(value >> 8);
-      pos[2] = static_cast<uint8_t>(value >> 16);
-      pos[3] = static_cast<uint8_t>(value >> 24);
-    } else {
-      const uint32_t le = convert_little_endian(value);
-      __builtin_memcpy(pos, &le, 4);
-    }
+    pos = buffer.get_pos();
   }
 };
-#undef PROTO_OUTLINE_FOR_SIZE
-#undef PROTO_FIXED32_BYTE_STORES
 
 #ifdef HAS_PROTO_MESSAGE_DUMP
 /**
@@ -692,12 +624,11 @@ class DumpBuffer {
 
 class ProtoMessage {
  public:
-  // Non-virtual defaults for messages with no fields; generated classes hide all four. The
-  // static encode_msg/calc_size_msg take const void * so &T::encode_msg needs no thunk.
-  static uint8_t *encode_msg(const void *self, ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) {
-    return buffer.get_pos();
-  }
-  static uint32_t calc_size_msg(const void *self) { return 0; }
+  // Non-virtual defaults for messages with no fields.
+  // Concrete message classes hide these with their own implementations.
+  // All call sites use templates to preserve the concrete type, so virtual
+  // dispatch is not needed. This eliminates per-message vtable entries for
+  // encode/calculate_size, saving ~1.3 KB of flash across all message types.
   uint8_t *encode(ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) const { return buffer.get_pos(); }
   uint32_t calculate_size() const { return 0; }
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -945,14 +876,19 @@ class ProtoSize {
 
 // Implementation of methods that depend on ProtoSize being fully defined
 
+// Encode thunk — converts void* back to concrete type for direct encode() call
+template<typename T> uint8_t *proto_encode_msg(const void *msg, ProtoWriteBuffer &buf PROTO_ENCODE_DEBUG_PARAM) {
+  return static_cast<const T *>(msg)->encode(buf PROTO_ENCODE_DEBUG_ARG);
+}
+
 // Thin template wrapper; delegates to non-template core in proto.cpp.
 template<typename T> inline void ProtoWriteBuffer::encode_sub_message(uint32_t field_id, const T &value) {
-  this->encode_sub_message(field_id, &value, &T::encode_msg);
+  this->encode_sub_message(field_id, &value, &proto_encode_msg<T>);
 }
 
 // Thin template wrapper; delegates to non-template core.
 template<typename T> inline void ProtoWriteBuffer::encode_optional_sub_message(uint32_t field_id, const T &value) {
-  this->encode_optional_sub_message(field_id, T::calc_size_msg(&value), &value, &T::encode_msg);
+  this->encode_optional_sub_message(field_id, value.calculate_size(), &value, &proto_encode_msg<T>);
 }
 
 // Template decode_to_message - preserves concrete type so decode() resolves statically

esphome/components/deep_sleep/deep_sleep_bk72xx.cpp

@@ -44,7 +44,7 @@ bool DeepSleepComponent::prepare_to_sleep_() {
           this->status_set_warning();
           ESP_LOGV(TAG, "Waiting for pin to switch state to enter deep sleep...");
         }
-        this->defer_sleep_();
+        this->next_enter_deep_sleep_ = true;
         return false;
       }
     }

esphome/components/deep_sleep/deep_sleep_component.cpp

@@ -17,7 +17,6 @@ void DeepSleepComponent::setup() {
 
 void DeepSleepComponent::schedule_sleep_() {
   this->next_enter_deep_sleep_ = false;
-  this->disable_loop();
   const optional<uint32_t> run_duration = get_run_duration_();
   if (run_duration.has_value()) {
     ESP_LOGI(TAG, "Scheduling in %" PRIu32 " ms", *run_duration);
@@ -46,7 +45,7 @@ void DeepSleepComponent::loop() {
 
 void DeepSleepComponent::begin_sleep(bool manual) {
   if (this->prevent_ && !manual) {
-    this->defer_sleep_();
+    this->next_enter_deep_sleep_ = true;
     return;
   }
 

esphome/components/deep_sleep/deep_sleep_component.h

@@ -190,11 +190,6 @@ class DeepSleepComponent final : public Component {
   void schedule_sleep_();
   bool should_teardown_();
 
-  void defer_sleep_() {
-    this->next_enter_deep_sleep_ = true;
-    this->enable_loop();
-  }
-
 #ifdef USE_BK72XX
   bool pin_prevents_sleep_(WakeUpPinItem &pin_item) const;
   bool get_real_pin_state_(InternalGPIOPin &pin) const { return (pin.digital_read() ^ pin.is_inverted()); }

esphome/components/deep_sleep/deep_sleep_esp32.cpp

@@ -100,7 +100,7 @@ bool DeepSleepComponent::prepare_to_sleep_() {
       this->status_set_warning();
       ESP_LOGW(TAG, "Waiting for wakeup pin state change");
     }
-    this->defer_sleep_();
+    this->next_enter_deep_sleep_ = true;
     return false;
   }
   return true;

esphome/components/es7210/es7210.cpp

@@ -153,14 +153,13 @@ bool ES7210::configure_mic_gain_() {
   ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_MIC2_GAIN_REG44, 0x0f, regv));
 
   // Configure mic 3
-  // MIC3 uses the ADC3/4 and MIC3/4 clock domains (bits 2 and 4), not the MIC1/2 domains.
-  ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_CLOCK_OFF_REG01, 0x15, 0x00));
+  ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_CLOCK_OFF_REG01, 0x0b, 0x00));
   ES7210_ERROR_CHECK(this->write_byte(ES7210_MIC34_POWER_REG4C, 0x00));
   ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_MIC3_GAIN_REG45, 0x10, 0x10));
   ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_MIC3_GAIN_REG45, 0x0f, regv));
 
   // Configure mic 4
-  ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_CLOCK_OFF_REG01, 0x15, 0x00));
+  ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_CLOCK_OFF_REG01, 0x0b, 0x00));
   ES7210_ERROR_CHECK(this->write_byte(ES7210_MIC34_POWER_REG4C, 0x00));
   ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_MIC4_GAIN_REG46, 0x10, 0x10));
   ES7210_ERROR_CHECK(this->es7210_update_reg_bit_(ES7210_MIC4_GAIN_REG46, 0x0f, regv));

esphome/components/esphome/ota/__init__.py

@@ -283,10 +283,18 @@ FINAL_VALIDATE_SCHEMA = ota_esphome_final_validate
 
 
 FILTER_SOURCE_FILES = filter_source_files_from_defines(
-    {"ota_esphome_noise.cpp": "USE_OTA_ENCRYPTION"}
+    {
+        "ota_esphome_noise.cpp": "USE_OTA_ENCRYPTION",
+        "ota_esphome_inflate.c": "USE_OTA_DEFLATE",
+    }
 )
 
 
+def enable_deflate() -> None:
+    """Compile the on-the-fly inflater for compressed uploads."""
+    cg.add_define("USE_OTA_DEFLATE")
+
+
 @coroutine_with_priority(CoroPriority.OTA_UPDATES)
 async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID])
@@ -305,6 +313,10 @@ async def to_code(config: ConfigType) -> None:
     if config.get(CONF_ALLOW_PARTITION_ACCESS):
         cg.add_define("USE_OTA_PARTITIONS")
 
+    # ESP8266 and RP2040 inflate gzip at reboot; the rest inflate on the fly
+    if not (CORE.is_esp8266 or CORE.is_rp2):
+        enable_deflate()
+
     # One key per device: an api encryption block supplies it (static or
     # runtime) and offers; the ota block only adds the requirement
     api_conf = CORE.config.get(CONF_API) or {}

esphome/components/esphome/ota/ota_esphome.cpp

@@ -22,8 +22,11 @@
 #include "esphome/core/lwip_fast_select.h"
 #endif
 
+#include <algorithm>
 #include <cerrno>
 #include <cstdio>
+#include <cstring>
+#include <new>
 #include <sys/time.h>
 
 namespace esphome {
@@ -45,6 +48,8 @@ static constexpr uint32_t OTA_SOCKET_TIMEOUT_HANDSHAKE = 20000;  // milliseconds
 // practice for a lost chunk ack (1.5 + 3 + 6 + 12 + 24 + 48 s); the CLI waits
 // longer (espota2.DATA_PHASE_TIMEOUT) so the device is free before it retries
 static constexpr uint32_t OTA_SOCKET_TIMEOUT_DATA = 105000;
+static constexpr uint32_t OTA_PROGRESS_INTERVAL_MS = 1000;
+static constexpr size_t OTA_SIZE_FIELD_BYTES = 4;  // sizes on the wire are 4 bytes MSB first
 
 // Single-instance pointer — multi-port configs are rejected in final_validate.
 // NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
@@ -182,12 +187,23 @@ static constexpr uint8_t CLIENT_FEATURE_SUPPORTS_COMPRESSION = 0x01;
 static constexpr uint8_t CLIENT_FEATURE_SUPPORTS_SHA256_AUTH = 0x02;
 static constexpr uint8_t CLIENT_FEATURE_SUPPORTS_EXTENDED_PROTOCOL = 0x04;
 static constexpr uint8_t CLIENT_FEATURE_SUPPORTS_NOISE = 0x08;
+static constexpr uint8_t CLIENT_FEATURE_SUPPORTS_DEFLATE = 0x10;
 // Noise needs the extended protocol: the prologue binds the 2-byte feature ack
 static constexpr uint8_t CLIENT_NOISE_FEATURES =
     CLIENT_FEATURE_SUPPORTS_NOISE | CLIENT_FEATURE_SUPPORTS_EXTENDED_PROTOCOL;
 static constexpr uint8_t SERVER_FEATURE_SUPPORTS_COMPRESSION = 0x01;
 static constexpr uint8_t SERVER_FEATURE_SUPPORTS_PARTITION_ACCESS = 0x02;
 static constexpr uint8_t SERVER_FEATURE_SUPPORTS_NOISE = 0x04;
+// Raw deflate, window <= OTA_INFLATE_WINDOW_SIZE. Binding once offered: the
+// client must then send the image size frame and a deflate stream.
+static constexpr uint8_t SERVER_FEATURE_SUPPORTS_DEFLATE = 0x08;
+
+#ifdef USE_OTA_ENCRYPTION
+inline bool ESPHomeOTAComponent::noise_offered_() const {
+  return (this->handshake_buf_[1] & SERVER_FEATURE_SUPPORTS_NOISE) != 0 &&
+         (this->ota_features_ & CLIENT_NOISE_FEATURES) == CLIENT_NOISE_FEATURES;
+}
+#endif
 
 inline bool ESPHomeOTAComponent::extended_proto_() const {
 #ifdef USE_OTA_ENCRYPTION_REQUIRED
@@ -293,7 +309,7 @@ void ESPHomeOTAComponent::handle_handshake_() {
       this->transition_ota_state_(OTAState::FEATURE_ACK);
 
       const bool supports_compression =
-          (this->ota_features_ & CLIENT_FEATURE_SUPPORTS_COMPRESSION) != 0 && this->backend_->supports_compression();
+          (this->ota_features_ & CLIENT_FEATURE_SUPPORTS_COMPRESSION) != 0 && ota::OTABackend::supports_compression();
 
       // Compose the feature-ack response. When the client negotiates the extended protocol we emit
       // a 2-byte response (marker + server feature flags); otherwise we emit the single-byte
@@ -313,6 +329,26 @@ void ESPHomeOTAComponent::handle_handshake_() {
 #elif defined(USE_OTA_ENCRYPTION)
         // A yaml key always exists: validation rejects the all-zeros key
         this->handshake_buf_[1] |= SERVER_FEATURE_SUPPORTS_NOISE;
+#endif
+#ifdef USE_OTA_ENCRYPTION
+        // Reserve the noise session before the optional inflate buffer, so the
+        // required allocation is not starved by the compression window
+        if (this->noise_offered_()) {
+          this->noise_reserve_session_();
+        }
+#endif
+#ifdef USE_OTA_DEFLATE
+        // Offered only once the session memory is in hand; else uncompressed
+        if ((this->ota_features_ & CLIENT_FEATURE_SUPPORTS_DEFLATE) != 0) {
+          // Value initialized: a corrupt stream that back references the
+          // window before it is filled then copies zeros, never stale memory
+          this->inflate_.reset(new (std::nothrow) InflateSession());
+          if (this->inflate_ != nullptr) {
+            this->handshake_buf_[1] |= SERVER_FEATURE_SUPPORTS_DEFLATE;
+          } else {
+            ESP_LOGW(TAG, "No memory to inflate");
+          }
+        }
 #endif
       } else {
         this->handshake_buf_[0] =
@@ -331,8 +367,7 @@ void ESPHomeOTAComponent::handle_handshake_() {
 #ifdef USE_OTA_ENCRYPTION
       // Latch the offer actually sent: a key activating between the two
       // states must not start a session the client never expects
-      if ((this->handshake_buf_[1] & SERVER_FEATURE_SUPPORTS_NOISE) != 0 &&
-          (this->ota_features_ & CLIENT_NOISE_FEATURES) == CLIENT_NOISE_FEATURES) {
+      if (this->noise_offered_()) {
         // handshake_buf_ still holds the feature ack composed above; a
         // would-block re-entry lands here without rebuilding it
         if (!this->noise_start_session_(this->handshake_buf_[1])) {
@@ -430,16 +465,11 @@ void ESPHomeOTAComponent::handle_data_() {
   // Backend calls overwrite this with OK; reset to UNKNOWN before any
   // goto error that follows a successful begin()/write()
   ota::OTAResponseTypes error_code = ota::OTA_RESPONSE_ERROR_UNKNOWN;
-  size_t total = 0;
-  uint32_t last_progress = 0;
-  uint32_t last_data_ms = 0;
+  DataTransfer xfer;
   uint8_t buf[OTA_BUFFER_SIZE];
   char *sbuf = reinterpret_cast<char *>(buf);
-  size_t ota_size;
+  size_t image_size;
   ota::OTAType ota_type = ota::OTA_TYPE_UPDATE_APP;
-#if USE_OTA_VERSION == 2
-  size_t size_acknowledged = 0;
-#endif
 
   // Set socket timeouts and blocking mode (see strategy table above)
   struct timeval tv;
@@ -462,14 +492,13 @@ void ESPHomeOTAComponent::handle_data_() {
   }
   ESP_LOGV(TAG, "OTA type is 0x%02x", ota_type);
 
-  // Read size, 4 bytes MSB first
-  if (!this->data_readall_(buf, 4)) {
-    this->log_read_error_(LOG_STR("size"));
+  if (!this->read_size_(buf, xfer.ota_size, LOG_STR("size")))
     goto error;  // NOLINT(cppcoreguidelines-avoid-goto)
-  }
-  ota_size = (static_cast<size_t>(buf[0]) << 24) | (static_cast<size_t>(buf[1]) << 16) |
-             (static_cast<size_t>(buf[2]) << 8) | buf[3];
-  ESP_LOGV(TAG, "Size is %zu bytes", ota_size);
+  image_size = xfer.ota_size;
+#ifdef USE_OTA_DEFLATE
+  if (this->inflate_ != nullptr && !this->read_size_(buf, image_size, LOG_STR("image size")))
+    goto error;  // NOLINT(cppcoreguidelines-avoid-goto)
+#endif
 
 #ifndef USE_OTA_PARTITIONS
   if (ota_type != ota::OTA_TYPE_UPDATE_APP) {
@@ -489,7 +518,7 @@ void ESPHomeOTAComponent::handle_data_() {
 #endif
 
   // begin() returns quickly; flash sectors are erased incrementally during write().
-  error_code = this->backend_->begin(ota_size, ota_type);
+  error_code = this->backend_->begin(image_size, ota_type);
   if (error_code != ota::OTA_RESPONSE_OK)
     goto error;  // NOLINT(cppcoreguidelines-avoid-goto)
 
@@ -509,75 +538,25 @@ void ESPHomeOTAComponent::handle_data_() {
   // Acknowledge MD5 OK - 1 byte
   this->data_write_byte_(ota::OTA_RESPONSE_BIN_MD5_OK);
 
-  // Track when we last received data so a silently-vanished peer (no FIN/RST
-  // delivered, e.g. uploader killed mid-transfer or NAT/router dropped state)
-  // can't wedge the device indefinitely. Without this, the loop only exits
-  // on actual data, EOF, or a non-EWOULDBLOCK error from read(), and lwIP
-  // TCP keepalive isn't enabled here.
-  last_data_ms = millis();
-  while (total < ota_size) {
-    if (millis() - last_data_ms > OTA_SOCKET_TIMEOUT_DATA) {
-      ESP_LOGW(TAG, "No data received for %u ms", (unsigned) OTA_SOCKET_TIMEOUT_DATA);
-      error_code = ota::OTA_RESPONSE_ERROR_UNKNOWN;
+  xfer.last_data_ms = millis();
+#ifdef USE_OTA_DEFLATE
+  if (this->inflate_ != nullptr) {
+    error_code = this->inflate_data_(buf, image_size, xfer);
+    if (error_code != ota::OTA_RESPONSE_OK)
       goto error;  // NOLINT(cppcoreguidelines-avoid-goto)
-    }
-    size_t remaining = ota_size - total;
-    size_t requested = remaining < OTA_BUFFER_SIZE ? remaining : OTA_BUFFER_SIZE;
-    ssize_t read;
-#ifdef USE_OTA_ENCRYPTION
-    if (this->noise_ != nullptr) {
-      // One frame per call; noise_read_data_ waits internally (readall_), so
-      // there is no would-block retry here and failures are already logged.
-      read = this->noise_read_data_(buf, requested);
-      if (read <= 0) {
+  } else
+#endif
+  {
+    while (xfer.total < xfer.ota_size) {
+      ssize_t read = this->receive_data_(buf, xfer);
+      if (read < 0) {
         error_code = ota::OTA_RESPONSE_ERROR_UNKNOWN;
         goto error;  // NOLINT(cppcoreguidelines-avoid-goto)
       }
-    } else
-#endif
-    {
-      read = this->client_->read(buf, requested);
-      if (read == -1) {
-        const int err = errno;
-        if (this->would_block_(err)) {
-          // read() already waited up to SO_RCVTIMEO for data, just feed WDT
-          App.feed_wdt();
-          continue;
-        }
-        ESP_LOGW(TAG, "Read err %d", err);
-        error_code = ota::OTA_RESPONSE_ERROR_UNKNOWN;
+      error_code = this->write_flash_(buf, read);
+      if (error_code != ota::OTA_RESPONSE_OK)
         goto error;  // NOLINT(cppcoreguidelines-avoid-goto)
-      } else if (read == 0) {
-        ESP_LOGW(TAG, "Remote closed");
-        error_code = ota::OTA_RESPONSE_ERROR_UNKNOWN;
-        goto error;  // NOLINT(cppcoreguidelines-avoid-goto)
-      }
-    }
-
-    last_data_ms = millis();
-    error_code = this->backend_->write(buf, read);
-    if (error_code != ota::OTA_RESPONSE_OK) {
-      ESP_LOGW(TAG, "Flash write err %d", error_code);
-      goto error;  // NOLINT(cppcoreguidelines-avoid-goto)
-    }
-    total += read;
-#if USE_OTA_VERSION == 2
-    while (size_acknowledged + OTA_BLOCK_SIZE <= total || (total == ota_size && size_acknowledged < ota_size)) {
-      this->data_write_byte_(ota::OTA_RESPONSE_CHUNK_OK);
-      size_acknowledged += OTA_BLOCK_SIZE;
-    }
-#endif
-
-    uint32_t now = millis();
-    if (now - last_progress > 1000) {
-      last_progress = now;
-      float percentage = (total * 100.0f) / ota_size;
-      ESP_LOGD(TAG, "Progress: %0.1f%%", percentage);
-#ifdef USE_OTA_STATE_LISTENER
-      this->notify_state_(ota::OTA_IN_PROGRESS, percentage, 0);
-#endif
-      // feed watchdog and give other tasks a chance to run
-      this->yield_and_feed_watchdog_();
+      this->ack_written_(xfer);
     }
   }
 
@@ -774,6 +753,171 @@ bool ESPHomeOTAComponent::try_write_(size_t to_write, const LogString *desc) {
   return this->handshake_buf_pos_ >= to_write;
 }
 
+bool ESPHomeOTAComponent::read_size_(uint8_t *buf, size_t &size, const LogString *desc) {
+  if (!this->data_readall_(buf, OTA_SIZE_FIELD_BYTES)) {
+    this->log_read_error_(desc);
+    return false;
+  }
+  size = encode_uint32(buf[0], buf[1], buf[2], buf[3]);
+  ESP_LOGV(TAG, "%s is %zu bytes", LOG_STR_ARG(desc), size);
+  return true;
+}
+
+ota::OTAResponseTypes ESPHomeOTAComponent::write_flash_(uint8_t *data, size_t len) {
+  ota::OTAResponseTypes result = this->backend_->write(data, len);
+  if (result != ota::OTA_RESPONSE_OK) {
+    ESP_LOGW(TAG, "Flash write err %d", result);
+  }
+  return result;
+}
+
+ssize_t ESPHomeOTAComponent::receive_data_(uint8_t *buf, DataTransfer &xfer) {
+  const size_t remaining = xfer.ota_size - xfer.total;
+  const size_t requested = std::min(remaining, OTA_BUFFER_SIZE);
+  ssize_t read;
+  for (;;) {
+    // A silently-vanished peer (no FIN/RST delivered, e.g. uploader killed
+    // mid-transfer or NAT/router dropped state) must not wedge the device:
+    // read() only fails on EOF or a real error, and lwIP TCP keepalive isn't
+    // enabled here.
+    if (millis() - xfer.last_data_ms > OTA_SOCKET_TIMEOUT_DATA) {
+      ESP_LOGW(TAG, "No data received for %u ms", (unsigned) OTA_SOCKET_TIMEOUT_DATA);
+      return -1;
+    }
+#ifdef USE_OTA_ENCRYPTION
+    if (this->noise_ != nullptr) {
+      // One frame per call; noise_read_data_ waits internally (readall_), so
+      // there is no would-block retry here and failures are already logged.
+      read = this->noise_read_data_(buf, requested);
+      if (read <= 0)
+        return -1;
+      break;
+    }
+#endif
+    read = this->client_->read(buf, requested);
+    if (read > 0)
+      break;
+    if (read == 0) {
+      this->log_remote_closed_(LOG_STR("data"));
+      return -1;
+    }
+    if (!this->would_block_(errno)) {
+      this->log_socket_error_(LOG_STR("data"));
+      return -1;
+    }
+    // read() already waited up to SO_RCVTIMEO for data, just feed WDT
+    App.feed_wdt();
+  }
+
+  const uint32_t now = millis();
+  xfer.last_data_ms = now;
+  xfer.total += read;
+  this->ack_received_(xfer);
+  if (now - xfer.last_progress > OTA_PROGRESS_INTERVAL_MS) {
+    xfer.last_progress = now;
+    float percentage = (xfer.total * 100.0f) / xfer.ota_size;
+    ESP_LOGD(TAG, "Progress: %0.1f%%", percentage);
+#ifdef USE_OTA_STATE_LISTENER
+    this->notify_state_(ota::OTA_IN_PROGRESS, percentage, 0);
+#endif
+    // feed watchdog and give other tasks a chance to run
+    this->yield_and_feed_watchdog_();
+  }
+  return read;
+}
+
+void ESPHomeOTAComponent::send_chunk_acks_(DataTransfer &xfer) {
+#if USE_OTA_VERSION == 2
+  while (xfer.acknowledged + OTA_BLOCK_SIZE <= xfer.total ||
+         (xfer.total == xfer.ota_size && xfer.acknowledged < xfer.ota_size)) {
+    this->data_write_byte_(ota::OTA_RESPONSE_CHUNK_OK);
+    xfer.acknowledged += OTA_BLOCK_SIZE;
+  }
+#endif
+}
+
+#ifdef USE_OTA_DEFLATE
+// The window doubles as the output buffer; flushed bytes stay as back
+// reference history for the next windowful.
+ota::OTAResponseTypes ESPHomeOTAComponent::inflate_flush_(InflateSession &session) {
+  const size_t produced = session.dest - session.window;
+  const size_t pending = produced - session.flushed;
+  if (pending != 0) {
+    if (pending > session.image_size - session.written) {
+      ESP_LOGW(TAG, "Inflate overrun");
+      return ota::OTA_RESPONSE_ERROR_UNKNOWN;
+    }
+    ota::OTAResponseTypes result = this->write_flash_(session.window + session.flushed, pending);
+    if (result != ota::OTA_RESPONSE_OK)
+      return result;
+    session.flushed = produced;
+    session.written += pending;
+    // A compressible region yields many windows per socket read
+    App.feed_wdt();
+  }
+  // Even with nothing new written: a block boundary can fall inside a header
+  this->ack_written_(*session.xfer);
+  return ota::OTA_RESPONSE_OK;
+}
+
+ota::OTAResponseTypes ESPHomeOTAComponent::inflate_data_(uint8_t *in, size_t image_size, DataTransfer &xfer) {
+  InflateSession &session = *this->inflate_;
+  session.self = this;
+  session.xfer = &xfer;
+  session.in = in;
+  session.image_size = image_size;
+  session.written = 0;
+  session.error = ota::OTA_RESPONSE_OK;
+  ota_inflate_init(&session, session.window, OTA_INFLATE_WINDOW_SIZE);
+  // Where the ack must follow the write, flush and ack before waiting for
+  // input, or the client waits for an ack while the decoder waits for data
+  session.source_read_cb = [](OtaInflateState *d) -> int {
+    auto *s = static_cast<InflateSession *>(d);
+    if (ACK_AFTER_WRITE) {
+      s->error = s->self->inflate_flush_(*s);
+      if (s->error != ota::OTA_RESPONSE_OK)
+        return -1;
+    }
+    // More input than announced; reported by the size check below
+    if (s->xfer->total >= s->xfer->ota_size)
+      return -1;
+    ssize_t read = s->self->receive_data_(s->in, *s->xfer);
+    if (read <= 0) {
+      // Already logged by receive_data_
+      s->error = ota::OTA_RESPONSE_ERROR_UNKNOWN;
+      return -1;
+    }
+    d->source = s->in + 1;
+    d->source_limit = s->in + read;
+    return s->in[0];
+  };
+
+  int res;
+  do {
+    // The ring index wrapped to 0 exactly when the window filled
+    session.dest = session.window;
+    session.dest_limit = session.window + OTA_INFLATE_WINDOW_SIZE;
+    session.flushed = 0;
+    res = ota_inflate(&session);
+    // A stored block keeps emitting zeros after a failed read, hence eof
+    if (res < 0 || session.eof)
+      break;
+    session.error = this->inflate_flush_(session);
+  } while (res != OTA_INFLATE_DONE && session.error == ota::OTA_RESPONSE_OK);
+
+  // Transport and flash failures are logged where they happen
+  if (session.error != ota::OTA_RESPONSE_OK)
+    return session.error;
+  if (res != OTA_INFLATE_DONE || session.written != image_size || xfer.total != xfer.ota_size) {
+    ESP_LOGW(TAG, "Inflate err %d, %zu of %zu B from %zu of %zu", res, session.written, image_size, xfer.total,
+             xfer.ota_size);
+    return ota::OTA_RESPONSE_ERROR_UNKNOWN;
+  }
+  ESP_LOGD(TAG, "Inflated %zu bytes from %zu", session.written, xfer.total);
+  return ota::OTA_RESPONSE_OK;
+}
+#endif  // USE_OTA_DEFLATE
+
 void ESPHomeOTAComponent::cleanup_connection_() {
   this->client_->close();
   this->client_ = nullptr;
@@ -787,6 +931,9 @@ void ESPHomeOTAComponent::cleanup_connection_() {
 #endif
 #ifdef USE_OTA_ENCRYPTION
   this->noise_ = nullptr;
+#endif
+#ifdef USE_OTA_DEFLATE
+  this->inflate_ = nullptr;
 #endif
   // Intentionally no disable_loop() — letting loop() run one more iteration catches
   // any connection that queued on the listener mid-session (otherwise the wake flag,

esphome/components/esphome/ota/ota_esphome.h

@@ -7,6 +7,9 @@
 #ifdef USE_OTA_ENCRYPTION
 #include "esphome/components/noise/noise_handshake.h"
 #endif
+#ifdef USE_OTA_DEFLATE
+#include "ota_esphome_inflate.h"
+#endif
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 #include "esphome/core/preferences.h"
@@ -88,6 +91,9 @@ class ESPHomeOTAComponent final : public ota::OTAComponent {
   };
   // The api server's live context when the api has encryption, else our own
   const noise::NoiseContext &noise_context_() const;
+  // True once the feature ack offers noise and the client asked for it
+  bool noise_offered_() const;
+  void noise_reserve_session_();
   bool noise_start_session_(uint8_t server_feature_flags);
   bool handle_noise_handshake_();
   bool noise_try_read_frame_();
@@ -119,6 +125,38 @@ class ESPHomeOTAComponent final : public ota::OTAComponent {
     return this->readall_(buf, len);
   }
 
+  // Upload accounting shared by the data loop and the inflate read callback
+  struct DataTransfer {
+    size_t ota_size{0};  // bytes the client sends
+    size_t total{0};     // bytes received so far
+#if USE_OTA_VERSION == 2
+    size_t acknowledged{0};
+#endif
+    uint32_t last_data_ms{0};
+    uint32_t last_progress{0};
+  };
+  // Up to OTA_BUFFER_SIZE bytes into buf; returns bytes read, -1 on failure (logged)
+  inline ssize_t receive_data_(uint8_t *buf, DataTransfer &xfer);
+  // Raw lwIP cannot service the radio during a sector write, so the ack waits
+  // for the write there; a socket task lets the next block arrive meanwhile
+#ifdef USE_SOCKET_IMPL_LWIP_TCP
+  static constexpr bool ACK_AFTER_WRITE = true;
+#else
+  static constexpr bool ACK_AFTER_WRITE = false;
+#endif
+  void send_chunk_acks_(DataTransfer &xfer);
+  inline void ack_received_(DataTransfer &xfer) {
+    if (!ACK_AFTER_WRITE)
+      this->send_chunk_acks_(xfer);
+  }
+  inline void ack_written_(DataTransfer &xfer) {
+    if (ACK_AFTER_WRITE)
+      this->send_chunk_acks_(xfer);
+  }
+  inline bool read_size_(uint8_t *buf, size_t &size, const LogString *desc);
+  // Writes to the backend and logs a failure
+  inline ota::OTAResponseTypes write_flash_(uint8_t *data, size_t len);
+
   bool try_read_(size_t to_read, const LogString *desc);
   bool try_write_(size_t to_write, const LogString *desc);
 
@@ -171,6 +209,34 @@ class ESPHomeOTAComponent final : public ota::OTAComponent {
   static_assert(OTA_BUFFER_SIZE >= NOISE_CLIENT_MAX_PLAINTEXT + noise::MAC_SIZE,
                 "OTA_BUFFER_SIZE must fit a full encrypted data frame");
 #endif
+#ifdef USE_OTA_DEFLATE
+  // At least 1 << espota2.DEFLATE_WINDOW_BITS; also the inflate output buffer
+  static constexpr size_t OTA_INFLATE_WINDOW_SIZE = 4096;
+  // Heap-allocated only while a deflate upload is negotiated; the decoder
+  // state is the base so the read callback can recover the session
+  struct InflateSession : OtaInflateState {
+    // The session outlives the upload it serves, but these three are borrowed
+    // from inflate_data_'s caller and dangle once that call returns; only that
+    // call, and the flush and read callback it drives, may read them
+    ESPHomeOTAComponent *self;
+    DataTransfer *xfer;
+    uint8_t *in;  // caller's buffer for the compressed input
+    size_t image_size;
+    size_t written;               // inflated bytes in flash
+    size_t flushed;               // bytes of the current window already in flash
+    ota::OTAResponseTypes error;  // first failure inside the read callback
+    uint8_t window[OTA_INFLATE_WINDOW_SIZE];
+  };
+#ifndef CLANG_TIDY  // static analysis sets every define at once
+  static_assert(!ota::OTABackend::supports_compression(),
+                "USE_OTA_DEFLATE is for backends that cannot store a gzip image");
+#endif
+  // Writes the decoded bytes not yet in flash without moving dest
+  ota::OTAResponseTypes inflate_flush_(InflateSession &session);
+  ota::OTAResponseTypes inflate_data_(uint8_t *in, size_t image_size, DataTransfer &xfer);
+  std::unique_ptr<InflateSession> inflate_;
+#endif
+
   static constexpr uint8_t MAGIC_BYTES[5] = {0x6C, 0x26, 0xF7, 0x5C, 0x45};
   // Derived from the feature byte; storing it would pad the trailing bytes
   bool extended_proto_() const;

esphome/components/esphome/ota/ota_esphome_inflate.c

@@ -0,0 +1,498 @@
+/*
+ * uzlib  -  tiny deflate/inflate library (deflate, gzip, zlib)
+ *
+ * Copyright (c) 2003 by Joergen Ibsen / Jibz
+ * All Rights Reserved
+ * http://www.ibsensoftware.com/
+ *
+ * Copyright (c) 2014-2018 by Paul Sokolovsky
+ *
+ * This software is provided 'as-is', without any express
+ * or implied warranty.  In no event will the authors be
+ * held liable for any damages arising from the use of
+ * this software.
+ *
+ * Permission is granted to anyone to use this software
+ * for any purpose, including commercial applications,
+ * and to alter it and redistribute it freely, subject to
+ * the following restrictions:
+ *
+ * 1. The origin of this software must not be
+ *    misrepresented; you must not claim that you
+ *    wrote the original software. If you use this
+ *    software in a product, an acknowledgment in
+ *    the product documentation would be appreciated
+ *    but is not required.
+ *
+ * 2. Altered source versions must be plainly marked
+ *    as such, and must not be misrepresented as
+ *    being the original software.
+ *
+ * 3. This notice may not be removed or altered from
+ *    any source distribution.
+ */
+
+/*
+ * Altered for ESPHome: this is the raw deflate decoder from uzlib's
+ * tinflate.c (v2.9.5) with the gzip/zlib header parsers, checksums,
+ * runtime table builder and in-memory (non ring window) output path
+ * removed, and the public names prefixed with ota_inflate.
+ */
+
+#include "ota_esphome_inflate.h"
+
+#include <stddef.h>
+
+#define TINF_OK OTA_INFLATE_OK
+#define TINF_DONE OTA_INFLATE_DONE
+#define TINF_DATA_ERROR OTA_INFLATE_DATA_ERROR
+#define TINF_DICT_ERROR OTA_INFLATE_DICT_ERROR
+#define TINF_DATA struct OtaInflateState
+#define TINF_TREE struct OtaInflateTree
+#define TINF_ARRAY_SIZE(arr) (sizeof(arr) / sizeof(*(arr)))
+
+/* every output byte also goes into the ring window */
+#define TINF_PUT(d, c) \
+  { \
+    *d->dest++ = c; \
+    d->dict_ring[d->dict_idx++] = c; \
+    if (d->dict_idx == d->dict_size) \
+      d->dict_idx = 0; \
+  }
+
+/* --------------------------------------------------- *
+ * -- constant tables (upstream builds them at runtime) -- *
+ * --------------------------------------------------- */
+
+static const unsigned char LENGTH_BITS[30] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2,
+                                              2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5};
+static const unsigned short LENGTH_BASE[30] = {3,  4,  5,  6,  7,  8,  9,  10, 11,  13,  15,  17,  19,  23, 27,
+                                               31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258};
+
+static const unsigned char DIST_BITS[30] = {0, 0, 0, 0, 1, 1, 2, 2,  3,  3,  4,  4,  5,  5,  6,
+                                            6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13};
+static const unsigned short DIST_BASE[30] = {1,    2,    3,    4,    5,    7,    9,    13,    17,    25,
+                                             33,   49,   65,   97,   129,  193,  257,  385,   513,   769,
+                                             1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
+
+/* special ordering of code length codes */
+static const unsigned char CLCIDX[] = {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
+
+/* ----------------------- *
+ * -- utility functions -- *
+ * ----------------------- */
+
+/* given an array of code lengths, build a tree */
+static void tinf_build_tree(TINF_TREE *t, const unsigned char *lengths, unsigned int num) {
+  unsigned short offs[16];
+  unsigned int i, sum;
+
+  /* clear code length count table */
+  for (i = 0; i < 16; ++i)
+    t->table[i] = 0;
+
+  /* scan symbol lengths, and sum code length counts */
+  for (i = 0; i < num; ++i)
+    t->table[lengths[i]]++;
+
+  /* In the lengths array, 0 means unused code. So, t->table[0] now contains
+     number of unused codes. But table's purpose is to contain # of codes of
+     particular length, and there're 0 codes of length 0. */
+  t->table[0] = 0;
+
+  /* compute offset table for distribution sort */
+  for (sum = 0, i = 0; i < 16; ++i) {
+    offs[i] = sum;
+    sum += t->table[i];
+  }
+
+  /* create code->symbol translation table (symbols sorted by code) */
+  for (i = 0; i < num; ++i) {
+    if (lengths[i])
+      t->trans[offs[lengths[i]]++] = i;
+  }
+}
+
+/* ---------------------- *
+ * -- decode functions -- *
+ * ---------------------- */
+
+static unsigned char uzlib_get_byte(TINF_DATA *d) {
+  /* If end of source buffer is not reached, return next byte from source
+     buffer. */
+  if (d->source < d->source_limit) {
+    return *d->source++;
+  }
+
+  /* Otherwise if there's callback and we haven't seen EOF yet, try to
+     read next byte using it. (Note: the callback can also update ->source
+     and ->source_limit). */
+  if (!d->eof) {
+    int val = d->source_read_cb(d);
+    if (val >= 0) {
+      return (unsigned char) val;
+    }
+  }
+
+  /* Otherwise, we hit EOF (either from ->source_read_cb() or from exhaustion
+     of the buffer), and it will be "sticky", i.e. further calls to this
+     function will end up here too. */
+  d->eof = true;
+
+  return 0;
+}
+
+/* get one bit from source stream */
+static int tinf_getbit(TINF_DATA *d) {
+  unsigned int bit;
+
+  /* check if tag is empty */
+  if (!d->bitcount--) {
+    /* load next tag */
+    d->tag = uzlib_get_byte(d);
+    d->bitcount = 7;
+  }
+
+  /* shift bit out of tag */
+  bit = d->tag & 0x01;
+  d->tag >>= 1;
+
+  return bit;
+}
+
+/* read a num bit value from a stream and add base */
+static unsigned int tinf_read_bits(TINF_DATA *d, int num, int base) {
+  unsigned int val = 0;
+
+  /* read num bits */
+  if (num) {
+    unsigned int limit = 1 << (num);
+    unsigned int mask;
+
+    for (mask = 1; mask < limit; mask *= 2)
+      if (tinf_getbit(d))
+        val += mask;
+  }
+
+  return val + base;
+}
+
+/* given a data stream and a tree, decode a symbol */
+static int tinf_decode_symbol(TINF_DATA *d, TINF_TREE *t) {
+  int sum = 0, cur = 0, len = 0;
+
+  /* get more bits while code value is above sum */
+  do {
+    cur = 2 * cur + tinf_getbit(d);
+
+    if (++len == TINF_ARRAY_SIZE(t->table)) {
+      return TINF_DATA_ERROR;
+    }
+
+    sum += t->table[len];
+    cur -= t->table[len];
+
+  } while (cur >= 0);
+
+  sum += cur;
+  if (sum < 0 || sum >= t->size) {
+    return TINF_DATA_ERROR;
+  }
+
+  return t->trans[sum];
+}
+
+/* given a data stream, decode dynamic trees from it */
+static int tinf_decode_trees(TINF_DATA *d, TINF_TREE *lt, TINF_TREE *dt) {
+  /* code lengths for 288 literal/len symbols and 32 dist symbols */
+  unsigned char lengths[288 + 32];
+  unsigned int hlit, hdist, hclen, hlimit;
+  unsigned int i, num, length;
+
+  /* get 5 bits HLIT (257-286) */
+  hlit = tinf_read_bits(d, 5, 257);
+
+  /* get 5 bits HDIST (1-32) */
+  hdist = tinf_read_bits(d, 5, 1);
+
+  /* get 4 bits HCLEN (4-19) */
+  hclen = tinf_read_bits(d, 4, 4);
+
+  for (i = 0; i < 19; ++i)
+    lengths[i] = 0;
+
+  /* read code lengths for code length alphabet */
+  for (i = 0; i < hclen; ++i) {
+    /* get 3 bits code length (0-7) */
+    unsigned int clen = tinf_read_bits(d, 3, 0);
+
+    lengths[CLCIDX[i]] = clen;
+  }
+
+  /* build code length tree, temporarily use length tree */
+  tinf_build_tree(lt, lengths, 19);
+
+  /* decode code lengths for the dynamic trees */
+  hlimit = hlit + hdist;
+  for (num = 0; num < hlimit;) {
+    int sym = tinf_decode_symbol(d, lt);
+    unsigned char fill_value = 0;
+    int lbits, lbase = 3;
+
+    /* error decoding */
+    if (sym < 0)
+      return sym;
+
+    switch (sym) {
+      case 16:
+        /* copy previous code length 3-6 times (read 2 bits) */
+        if (num == 0)
+          return TINF_DATA_ERROR;
+        fill_value = lengths[num - 1];
+        lbits = 2;
+        break;
+      case 17:
+        /* repeat code length 0 for 3-10 times (read 3 bits) */
+        lbits = 3;
+        break;
+      case 18:
+        /* repeat code length 0 for 11-138 times (read 7 bits) */
+        lbits = 7;
+        lbase = 11;
+        break;
+      default:
+        /* values 0-15 represent the actual code lengths */
+        lengths[num++] = sym;
+        /* continue the for loop */
+        continue;
+    }
+
+    /* special code length 16-18 are handled here */
+    length = tinf_read_bits(d, lbits, lbase);
+    if (num + length > hlimit)
+      return TINF_DATA_ERROR;
+    for (; length; --length) {
+      lengths[num++] = fill_value;
+    }
+  }
+
+  /* Check that there's "end of block" symbol */
+  if (lengths[256] == 0) {
+    return TINF_DATA_ERROR;
+  }
+
+  /* build dynamic trees */
+  tinf_build_tree(lt, lengths, hlit);
+  tinf_build_tree(dt, lengths + hlit, hdist);
+
+  return TINF_OK;
+}
+
+/* build the fixed huffman trees (RFC 1951 3.2.6) through the generic tree
+   builder; altered from upstream, which unrolls them by hand */
+static void tinf_build_fixed_trees(TINF_TREE *lt, TINF_TREE *dt) {
+  unsigned char lengths[288];
+  unsigned int i;
+
+  for (i = 0; i < 144; ++i)
+    lengths[i] = 8;
+  for (; i < 256; ++i)
+    lengths[i] = 9;
+  for (; i < 280; ++i)
+    lengths[i] = 7;
+  for (; i < 288; ++i)
+    lengths[i] = 8;
+  tinf_build_tree(lt, lengths, 288);
+
+  for (i = 0; i < 32; ++i)
+    lengths[i] = 5;
+  tinf_build_tree(dt, lengths, 32);
+}
+
+/* ----------------------------- *
+ * -- block inflate functions -- *
+ * ----------------------------- */
+
+/* given a stream and two trees, inflate next chunk of output (a byte or more) */
+static int tinf_inflate_block_data(TINF_DATA *d, TINF_TREE *lt, TINF_TREE *dt) {
+  if (d->curlen == 0) {
+    unsigned int offs;
+    int dist;
+    int sym = tinf_decode_symbol(d, lt);
+
+    if (d->eof) {
+      return TINF_DATA_ERROR;
+    }
+
+    if (sym < 0) {
+      return sym;
+    }
+
+    /* literal byte */
+    if (sym < 256) {
+      TINF_PUT(d, sym);
+      return TINF_OK;
+    }
+
+    /* end of block */
+    if (sym == 256) {
+      return TINF_DONE;
+    }
+
+    /* substring from sliding dictionary */
+    sym -= 257;
+    if (sym >= 29) {
+      return TINF_DATA_ERROR;
+    }
+
+    /* possibly get more bits from length code */
+    d->curlen = tinf_read_bits(d, LENGTH_BITS[sym], LENGTH_BASE[sym]);
+
+    dist = tinf_decode_symbol(d, dt);
+    if (dist < 0 || dist >= 30) {
+      return TINF_DATA_ERROR;
+    }
+
+    /* possibly get more bits from distance code */
+    offs = tinf_read_bits(d, DIST_BITS[dist], DIST_BASE[dist]);
+
+    /* calculate and validate actual LZ offset to use */
+    if (offs > d->dict_size) {
+      return TINF_DICT_ERROR;
+    }
+    /* Note: we don't try to catch offset which points to not yet filled
+       part of the dictionary here. Doing so would require keeping another
+       variable to track "filled in" size of the dictionary. Appearance of
+       such an offset cannot lead to accessing memory outside of the
+       dictionary buffer, and clients which don't want to leak unrelated
+       information, should explicitly initialize dictionary buffer passed
+       to uzlib. */
+
+    d->lz_off = d->dict_idx - offs;
+    if (d->lz_off < 0) {
+      d->lz_off += d->dict_size;
+    }
+  }
+
+  /* copy next byte from dict substring */
+  TINF_PUT(d, d->dict_ring[d->lz_off]);
+  if ((unsigned) ++d->lz_off == d->dict_size) {
+    d->lz_off = 0;
+  }
+  d->curlen--;
+  return TINF_OK;
+}
+
+/* inflate next byte from uncompressed block of data */
+static int tinf_inflate_uncompressed_block(TINF_DATA *d) {
+  if (d->curlen == 0) {
+    unsigned int length, invlength;
+
+    /* get length */
+    length = uzlib_get_byte(d);
+    length += 256 * uzlib_get_byte(d);
+    /* get one's complement of length */
+    invlength = uzlib_get_byte(d);
+    invlength += 256 * uzlib_get_byte(d);
+    /* check length */
+    if (length != (~invlength & 0x0000ffff))
+      return TINF_DATA_ERROR;
+
+    /* increment length to properly return TINF_DONE below, without
+       producing data at the same time */
+    d->curlen = length + 1;
+
+    /* make sure we start next block on a byte boundary */
+    d->bitcount = 0;
+  }
+
+  if (--d->curlen == 0) {
+    return TINF_DONE;
+  }
+
+  unsigned char c = uzlib_get_byte(d);
+  TINF_PUT(d, c);
+  return TINF_OK;
+}
+
+/* ---------------------- *
+ * -- public functions -- *
+ * ---------------------- */
+
+/* initialize decompression structure */
+void ota_inflate_init(TINF_DATA *d, unsigned char *dict, unsigned int dict_len) {
+  d->source = NULL;
+  d->source_limit = NULL;
+  d->tag = 0;
+  d->eof = 0;
+  d->bitcount = 0;
+  d->lz_off = 0;
+  d->bfinal = 0;
+  d->btype = -1;
+  d->dict_size = dict_len;
+  d->dict_ring = dict;
+  d->dict_idx = 0;
+  d->curlen = 0;
+  d->ltree.trans = d->ltrans;
+  d->ltree.size = TINF_ARRAY_SIZE(d->ltrans);
+  d->dtree.trans = d->dtrans;
+  d->dtree.size = TINF_ARRAY_SIZE(d->dtrans);
+}
+
+/* inflate next output bytes from compressed stream */
+int ota_inflate(TINF_DATA *d) {
+  do {
+    int res;
+
+    /* start a new block */
+    if (d->btype == -1) {
+      int old_btype;
+    next_blk:
+      old_btype = d->btype;
+      /* read final block flag */
+      d->bfinal = tinf_getbit(d);
+      /* read block type (2 bits) */
+      d->btype = tinf_read_bits(d, 2, 0);
+
+      if (d->btype == 1 && old_btype != 1) {
+        /* build fixed huffman trees */
+        tinf_build_fixed_trees(&d->ltree, &d->dtree);
+      } else if (d->btype == 2) {
+        /* decode trees from stream */
+        res = tinf_decode_trees(d, &d->ltree, &d->dtree);
+        if (res != TINF_OK) {
+          return res;
+        }
+      }
+    }
+
+    /* process current block */
+    switch (d->btype) {
+      case 0:
+        /* decompress uncompressed block */
+        res = tinf_inflate_uncompressed_block(d);
+        break;
+      case 1:
+      case 2:
+        /* decompress block with fixed/dynamic huffman trees */
+        /* trees were decoded previously, so it's the same routine for both */
+        res = tinf_inflate_block_data(d, &d->ltree, &d->dtree);
+        break;
+      default:
+        return TINF_DATA_ERROR;
+    }
+
+    if (res == TINF_DONE && !d->bfinal) {
+      /* the block has ended (without producing more data), but we
+         can't return without data, so start procesing next block */
+      goto next_blk;
+    }
+
+    if (res != TINF_OK) {
+      return res;
+    }
+
+  } while (d->dest < d->dest_limit);
+
+  return TINF_OK;
+}

esphome/components/esphome/ota/ota_esphome_inflate.h

@@ -0,0 +1,66 @@
+#pragma once
+// Raw deflate decoder cut down from uzlib (https://github.com/pfalcon/uzlib,
+// zlib licence, see the .c file); output goes through a ring window.
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum OtaInflateResult {
+  OTA_INFLATE_OK = 0,   /* more data produced, call again */
+  OTA_INFLATE_DONE = 1, /* end of compressed stream reached */
+  OTA_INFLATE_DATA_ERROR = -3,
+  OTA_INFLATE_DICT_ERROR = -5,
+};
+
+struct OtaInflateTree {
+  uint16_t table[16]; /* table of code length counts */
+  uint16_t *trans;    /* code -> symbol translation table, size entries */
+  uint16_t size;
+};
+
+struct OtaInflateState {
+  /* Next byte in the input buffer and one past its end */
+  const unsigned char *source;
+  const unsigned char *source_limit;
+  /* Called when source is exhausted; returns the next byte or -1 at EOF.
+     It may refill source/source_limit for buffered operation. */
+  int (*source_read_cb)(struct OtaInflateState *d);
+
+  unsigned int tag;
+  unsigned int bitcount;
+
+  /* Output cursor and one past the end of the output buffer */
+  unsigned char *dest;
+  unsigned char *dest_limit;
+
+  bool eof;
+
+  int btype;
+  int bfinal;
+  unsigned int curlen;
+  int lz_off;
+  /* Ring window holding the last dict_size output bytes for back references */
+  unsigned char *dict_ring;
+  unsigned int dict_size;
+  unsigned int dict_idx;
+
+  struct OtaInflateTree ltree; /* dynamic length/symbol tree */
+  struct OtaInflateTree dtree; /* dynamic distance tree */
+  uint16_t ltrans[288];
+  uint16_t dtrans[32]; /* the distance alphabet has 30 symbols, so the tree is kept small */
+};
+
+/* dict must cover the encoder's window (its largest back reference) */
+void ota_inflate_init(struct OtaInflateState *d, unsigned char *dict, unsigned int dict_len);
+/* Fills dest up to dest_limit (OK) or to the end of the stream (DONE). dest may
+   alias dict only if dest_limit - dest == dict_len and dest is reset to dict
+   exactly when a call returns OK, so the ring index and dest stay in lockstep */
+int ota_inflate(struct OtaInflateState *d);
+
+#ifdef __cplusplus
+}
+#endif

esphome/components/esphome/ota/ota_esphome_noise.cpp

@@ -33,7 +33,13 @@ ESPHomeOTAComponent::NoiseSession::~NoiseSession() {
   }
 }
 
-/** Allocate the session and start the responder handshake.
+void ESPHomeOTAComponent::noise_reserve_session_() {
+  // Default-init: the frame buffer is written before it is read
+  // NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks)
+  this->noise_ = std::unique_ptr<NoiseSession>(new (std::nothrow) NoiseSession);
+}
+
+/** Start the responder handshake, on the session reserved at offer time.
  *
  * The prologue binds the whole plaintext preamble, so any tampering with the
  * negotiation (a stripped feature flag, a changed version) breaks the first
@@ -42,10 +48,7 @@ ESPHomeOTAComponent::NoiseSession::~NoiseSession() {
  */
 bool ESPHomeOTAComponent::noise_start_session_(uint8_t server_feature_flags) {
   // A provisioned key cleared between the offer and here is not guarded: the
-  // session runs on the zero key load_psk fills in and fails the client's MAC.
-  // Default-init: the frame buffer is written before it is read
-  // NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks)
-  this->noise_ = std::unique_ptr<NoiseSession>(new (std::nothrow) NoiseSession);
+  // session runs on the zero key load_psk fills in and fails the client's MAC
   static constexpr size_t PROLOGUE_ACK_LEN = 2;  // OTA_RESPONSE_OK + version
   static constexpr size_t PROLOGUE_CLIENT_FEATURES_LEN = 1;
   static constexpr size_t PROLOGUE_FEATURE_ACK_LEN = 2;  // OTA_RESPONSE_FEATURE_FLAGS + server flags

esphome/components/logger/logger_esp32.cpp

@@ -3,7 +3,6 @@
 
 #include "esphome/components/esp32/crash_handler.h"
 #include <esp_log.h>
-#include <esp_idf_version.h>
 
 #include <driver/uart.h>
 #include <soc/soc_caps.h>
@@ -17,10 +16,8 @@
 #include <driver/usb_serial_jtag_vfs.h>
 #endif
 #endif
-#if defined(CONFIG_PM_ENABLE) && defined(CONFIG_FREERTOS_USE_TICKLESS_IDLE) && \
-    (ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(6, 0, 0))
-#include "esp_sleep.h"
-#endif
+
+#include "esp_idf_version.h"
 #include "freertos/FreeRTOS.h"
 
 #include <fcntl.h>
@@ -90,12 +87,6 @@ void init_uart(uart_port_t uart_num, uint32_t baud_rate, int tx_buffer_size) {
   // ESP-IDF requires rx_buffer_size > UART_HW_FIFO_LEN (128 bytes).
   const int min_rx_buffer_size = UART_HW_FIFO_LEN(uart_num) + 1;
   uart_driver_install(uart_num, min_rx_buffer_size, tx_buffer_size, 0, nullptr, 0);
-#if defined(CONFIG_PM_ENABLE) && defined(CONFIG_FREERTOS_USE_TICKLESS_IDLE) && \
-    (ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(6, 0, 0))
-  // Always flush before going to light sleep. Could be disabled for devices
-  // without TOP_PD or if source_clk = UART_SCLK_RTC
-  esp_sleep_set_console_uart_handling_mode(ESP_SLEEP_ALWAYS_FLUSH_UART);
-#endif
 }
 
 void Logger::pre_setup() {

esphome/components/mlx90614/mlx90614.cpp

@@ -26,129 +26,44 @@ static const uint8_t MLX90614_ID4 = 0x3F;
 
 static const char *const TAG = "mlx90614";
 
-// The EEPROM cell has a limited number of write cycles, so stop retrying after a few failures
-static constexpr uint8_t EMISSIVITY_WRITE_ATTEMPTS = 3;
-
-// SMBus packet error code: CRC-8 with polynomial 0x07, MSB first
-static uint8_t crc8_pec(const uint8_t *data, uint8_t len) { return crc8(data, len, 0x00, 0x07, true); }
-
 void MLX90614Component::setup() {
-  if (std::isnan(this->emissivity_)) {
+  if (!this->write_emissivity_()) {
+    ESP_LOGE(TAG, ESP_LOG_MSG_COMM_FAIL);
+    this->mark_failed();
     return;
   }
-  this->emissivity_write_attempts_ = EMISSIVITY_WRITE_ATTEMPTS;
-  this->try_write_emissivity_();
-  if (this->emissivity_write_attempts_ != 0) {
-    this->status_set_warning(LOG_STR("Failed to write emissivity, will retry"));
-  }
-}
-
-void MLX90614Component::try_write_emissivity_() {
-  if (this->emissivity_write_attempts_ == 0) {
-    return;
-  }
-  if (this->write_emissivity_()) {
-    this->emissivity_write_attempts_ = 0;
-    return;
-  }
-  if (--this->emissivity_write_attempts_ == 0) {
-    ESP_LOGE(TAG, "Giving up on writing emissivity after %u attempts", EMISSIVITY_WRITE_ATTEMPTS);
-    this->emissivity_write_failed_ = true;
-  }
 }
 
 bool MLX90614Component::write_emissivity_() {
-  // Skip the write when the EEPROM already holds the desired value to save write cycles
-  uint16_t current_emissivity;
-  if (this->read_register_(MLX90614_EMISSIVITY, current_emissivity) != i2c::ERROR_OK) {
-    return false;
-  }
-
-  const auto desired_emissivity = static_cast<uint16_t>(this->emissivity_ * 0xFFFF);
-  if (current_emissivity == desired_emissivity) {
+  if (std::isnan(this->emissivity_))
     return true;
-  }
-
-  return this->write_register_(MLX90614_EMISSIVITY, desired_emissivity);
-}
-
-bool MLX90614Component::write_register_(uint8_t reg, uint16_t data) {
-  // The PEC covers the whole write transaction: SLA+W, command, data low, data high
-  uint8_t buf[5];
-  buf[0] = this->address_ << 1;
-  buf[1] = reg;
-
-  // See datasheet 8.3.3.1 EEPROM write sequence
-  // 1. Write 0x0000 into the cell of interest (erases the cell)
-  buf[2] = buf[3] = 0;
-  buf[4] = crc8_pec(buf, 4);
-  auto ec = this->write_register(reg, buf + 2, 3);
-  if (ec != i2c::ERROR_OK) {
-    ESP_LOGW(TAG, "Can't erase register 0x%02X, error %d", reg, ec);
+  uint16_t value = (uint16_t) (this->emissivity_ * 65535);
+  if (!this->write_bytes_(MLX90614_EMISSIVITY, 0)) {
     return false;
   }
-
-  // 2. Wait at least 5ms
   delay(10);
-
-  // 3. Write the new value
-  if (data != 0) {
-    buf[2] = data & 0xFF;
-    buf[3] = data >> 8;
-    buf[4] = crc8_pec(buf, 4);
-    ec = this->write_register(reg, buf + 2, 3);
-    if (ec != i2c::ERROR_OK) {
-      ESP_LOGW(TAG, "Can't write register 0x%02X, error %d", reg, ec);
-      return false;
-    }
-    // 4. Wait at least 5ms
-    delay(10);
-  }
-
-  // 5. Read back to confirm the value was stored
-  uint16_t read_back;
-  ec = this->read_register_(reg, read_back);
-  if (ec != i2c::ERROR_OK) {
-    ESP_LOGW(TAG, "Can't check register 0x%02X value, error %d", reg, ec);
+  if (!this->write_bytes_(MLX90614_EMISSIVITY, value)) {
     return false;
   }
-
-  if (read_back != data) {
-    ESP_LOGW(TAG, "Read back mismatch on register 0x%02X. Expected 0x%04X, got 0x%04X", reg, data, read_back);
-    return false;
-  }
-
+  delay(10);
   return true;
 }
 
-i2c::ErrorCode MLX90614Component::read_register_(uint8_t reg, uint16_t &data) {
-  // The PEC covers the whole read transaction: SLA+W, command, SLA+R, data low, data high
-  uint8_t buf[6];
+bool MLX90614Component::write_bytes_(uint8_t reg, uint16_t data) {
+  uint8_t buf[5];
   buf[0] = this->address_ << 1;
   buf[1] = reg;
-  buf[2] = (this->address_ << 1) | 0x01;
-
-  const auto ec = this->read_register(reg, buf + 3, 3);
-  if (ec != i2c::ERROR_OK) {
-    ESP_LOGW(TAG, "i2c read error %d", ec);
-    return ec;
-  }
-
-  const auto expected_pec = crc8_pec(buf, 5);
-  if (buf[5] != expected_pec) {
-    ESP_LOGW(TAG, "i2c CRC error. Expected 0x%02X, got 0x%02X", expected_pec, buf[5]);
-    return i2c::ERROR_CRC;
-  }
-
-  data = encode_uint16(buf[4], buf[3]);
-  return i2c::ERROR_OK;
+  buf[2] = data & 0xFF;
+  buf[3] = data >> 8;
+  buf[4] = crc8(buf, 4, 0x00, 0x07, true);
+  return this->write_bytes(reg, buf + 2, 3);
 }
 
 void MLX90614Component::dump_config() {
   ESP_LOGCONFIG(TAG, "MLX90614:");
   LOG_I2C_DEVICE(this);
-  if (this->emissivity_write_attempts_ != 0) {
-    ESP_LOGW(TAG, "  Emissivity not written yet, will retry");
+  if (this->is_failed()) {
+    ESP_LOGE(TAG, ESP_LOG_MSG_COMM_FAIL);
   }
   LOG_UPDATE_INTERVAL(this);
   LOG_SENSOR("  ", "Ambient", this->ambient_sensor_);
@@ -156,41 +71,33 @@ void MLX90614Component::dump_config() {
 }
 
 void MLX90614Component::update() {
-  // Temperature reads run regardless of the emissivity state so a failure still shows up as NAN
-  this->try_write_emissivity_();
-
-  // Publishes NAN on a bus or CRC failure so a stuck reading is visible instead of silently stale
-  auto publish_sensor = [this](sensor::Sensor *sensor, uint8_t reg) {
-    if (sensor == nullptr) {
-      return i2c::ERROR_OK;
-    }
-
-    uint16_t raw;
-    const auto ec = this->read_register_(reg, raw);
-    if (ec != i2c::ERROR_OK) {
-      sensor->publish_state(NAN);
-      return ec;
-    }
-
-    // Bit 15 set means the device flagged the reading as invalid
-    const float temperature = (raw & 0x8000) ? NAN : raw * 0.02f - 273.15f;
-    ESP_LOGD(TAG, "'%s': Got temperature=%.1f°C", sensor->get_name().c_str(), temperature);
-    sensor->publish_state(temperature);
-    return ec;
-  };
-
-  const auto object_ec = publish_sensor(this->object_sensor_, MLX90614_TEMPERATURE_OBJECT_1);
-  const auto ambient_ec = publish_sensor(this->ambient_sensor_, MLX90614_TEMPERATURE_AMBIENT);
-
-  if (object_ec != i2c::ERROR_OK || ambient_ec != i2c::ERROR_OK) {
-    this->status_set_warning(LOG_STR("Failed to read some sensors"));
-  } else if (this->emissivity_write_failed_) {
-    this->status_set_warning(LOG_STR("Failed to write emissivity"));
-  } else if (this->emissivity_write_attempts_ != 0) {
-    this->status_set_warning(LOG_STR("Failed to write emissivity, will retry"));
-  } else {
-    this->status_clear_warning();
+  uint8_t emissivity[3];
+  if (this->read_register(MLX90614_EMISSIVITY, emissivity, 3) != i2c::ERROR_OK) {
+    this->status_set_warning();
+    return;
   }
+  uint8_t raw_object[3];
+  if (this->read_register(MLX90614_TEMPERATURE_OBJECT_1, raw_object, 3) != i2c::ERROR_OK) {
+    this->status_set_warning();
+    return;
+  }
+
+  uint8_t raw_ambient[3];
+  if (this->read_register(MLX90614_TEMPERATURE_AMBIENT, raw_ambient, 3) != i2c::ERROR_OK) {
+    this->status_set_warning();
+    return;
+  }
+
+  float ambient = raw_ambient[1] & 0x80 ? NAN : encode_uint16(raw_ambient[1], raw_ambient[0]) * 0.02f - 273.15f;
+  float object = raw_object[1] & 0x80 ? NAN : encode_uint16(raw_object[1], raw_object[0]) * 0.02f - 273.15f;
+
+  ESP_LOGD(TAG, "Got Temperature=%.1f°C Ambient=%.1f°C", object, ambient);
+
+  if (this->ambient_sensor_ != nullptr && !std::isnan(ambient))
+    this->ambient_sensor_->publish_state(ambient);
+  if (this->object_sensor_ != nullptr && !std::isnan(object))
+    this->object_sensor_->publish_state(object);
+  this->status_clear_warning();
 }
 
 }  // namespace esphome::mlx90614

esphome/components/mlx90614/mlx90614.h

@@ -18,18 +18,13 @@ class MLX90614Component final : public PollingComponent, public i2c::I2CDevice {
   void set_emissivity(float emissivity) { emissivity_ = emissivity; }
 
  protected:
-  void try_write_emissivity_();
   bool write_emissivity_();
 
-  bool write_register_(uint8_t reg, uint16_t data);
-  i2c::ErrorCode read_register_(uint8_t reg, uint16_t &data);
+  bool write_bytes_(uint8_t reg, uint16_t data);
 
   sensor::Sensor *ambient_sensor_{nullptr};
   sensor::Sensor *object_sensor_{nullptr};
 
   float emissivity_{NAN};
-  // Remaining attempts to program the emissivity EEPROM cell, bounded to limit cell wear
-  uint8_t emissivity_write_attempts_{0};
-  bool emissivity_write_failed_{false};
 };
 }  // namespace esphome::mlx90614

esphome/components/network/util.h

@@ -26,34 +26,30 @@ namespace esphome::network {
 
 /// Return whether the node is connected to the network (through wifi, eth, ...)
 ESPHOME_ALWAYS_INLINE inline bool is_connected() {
-  // With a single interface enabled the checks below collapse to `if (x) return true; return false;`, which
-  // clang-tidy wants folded into one return. Keep the per-interface form so every enabled interface is checked.
-  // NOLINTBEGIN(readability-simplify-boolean-expr)
 #ifdef USE_ETHERNET
   if (ethernet::global_eth_component != nullptr && ethernet::global_eth_component->is_connected())
     return true;
 #endif
 
 #ifdef USE_MODEM
-  if (modem::global_modem_component != nullptr && modem::global_modem_component->is_connected())
-    return true;
+  if (modem::global_modem_component != nullptr)
+    return modem::global_modem_component->is_connected();
 #endif
 
 #ifdef USE_WIFI
-  if (wifi::global_wifi_component != nullptr && wifi::global_wifi_component->is_connected())
-    return true;
+  if (wifi::global_wifi_component != nullptr)
+    return wifi::global_wifi_component->is_connected();
 #endif
 
 #ifdef USE_OPENTHREAD
-  if (openthread::global_openthread_component != nullptr && openthread::global_openthread_component->is_connected())
-    return true;
+  if (openthread::global_openthread_component != nullptr)
+    return openthread::global_openthread_component->is_connected();
 #endif
 
 #ifdef USE_HOST
   return true;  // Assume it's connected
 #endif
   return false;
-  // NOLINTEND(readability-simplify-boolean-expr)
 }
 
 /// Return whether the network is disabled: every configured interface with a

esphome/components/ota/ota_backend.h

@@ -7,6 +7,7 @@
 #include <concepts>
 #include <cstddef>
 #include <cstdint>
+#include <type_traits>
 
 #ifdef USE_OTA_STATE_LISTENER
 #include <vector>
@@ -102,6 +103,8 @@ enum OTAType : uint8_t {
 // - set_update_md5: expected digest of the incoming image, hex string.
 // - write: consume the next chunk; end: finalize and mark bootable.
 // - abort: safe to call in any state, including after end().
+// - supports_compression: constexpr, whether a gzip image is stored as is and
+//   inflated at reboot.
 template<typename T>
 concept OTABackendContract = requires(T backend, size_t image_size, uint8_t *data, size_t len, const char *md5) {
   { backend.begin(image_size, OTA_TYPE_UPDATE_APP) } -> std::same_as<OTAResponseTypes>;
@@ -110,7 +113,9 @@ concept OTABackendContract = requires(T backend, size_t image_size, uint8_t *dat
   { backend.write(data, len) } -> std::same_as<OTAResponseTypes>;
   { backend.end() } -> std::same_as<OTAResponseTypes>;
   backend.abort();
-  { backend.supports_compression() } -> std::same_as<bool>;
+  { T::supports_compression() } -> std::same_as<bool>;
+  // The value must be a constant expression
+  typename std::bool_constant<T::supports_compression()>;
 };
 
 /** Listener interface for OTA state changes.

esphome/components/ota/ota_backend_arduino_libretiny.h

@@ -13,7 +13,7 @@ class ArduinoLibreTinyOTABackend final {
   OTAResponseTypes write(uint8_t *data, size_t len);
   OTAResponseTypes end();
   void abort();
-  bool supports_compression() { return false; }
+  static constexpr bool supports_compression() { return false; }
 
  private:
   bool md5_set_{false};

esphome/components/ota/ota_backend_arduino_rp2.h

@@ -15,7 +15,10 @@ class ArduinoRP2OTABackend final {
   OTAResponseTypes write(uint8_t *data, size_t len);
   OTAResponseTypes end();
   void abort();
-  bool supports_compression() { return false; }
+  // The core's OTA stub inflates a staged gzip image at reboot, on every chip
+  // from 4.0.3 (ESPHome pins 6.0.0). begin() only sees the gzip size; the
+  // inflated size is known when the stub reads the trailer.
+  static constexpr bool supports_compression() { return USE_ARDUINO_VERSION_CODE >= VERSION_CODE(4, 0, 3); }
 
  private:
   bool md5_set_{false};

esphome/components/ota/ota_backend_esp8266.h

@@ -20,7 +20,7 @@ class ESP8266OTABackend final {
   OTAResponseTypes end();
   void abort();
   // Compression supported in all ESP8266 Arduino versions ESPHome supports (>= 2.7.0)
-  bool supports_compression() { return true; }
+  static constexpr bool supports_compression() { return true; }
 
  protected:
   /// Erase flash sector if current address is at sector boundary

esphome/components/ota/ota_backend_esp_idf.h

@@ -33,7 +33,7 @@ class IDFOTABackend final {
   OTAResponseTypes write(uint8_t *data, size_t len);
   OTAResponseTypes end();
   void abort();
-  bool supports_compression() { return false; }
+  static constexpr bool supports_compression() { return false; }
 
  protected:
 #ifdef USE_OTA_PARTITIONS

esphome/components/ota/ota_backend_factory.h

@@ -25,7 +25,7 @@ struct StubOTABackend {
   OTAResponseTypes write(uint8_t *data, size_t len) { return OTA_RESPONSE_ERROR_UNKNOWN; }
   OTAResponseTypes end() { return OTA_RESPONSE_ERROR_UNKNOWN; }
   void abort() {}
-  bool supports_compression() { return false; }
+  static constexpr bool supports_compression() { return false; }
 };
 std::unique_ptr<StubOTABackend> make_ota_backend();
 }  // namespace esphome::ota
@@ -33,6 +33,7 @@ std::unique_ptr<StubOTABackend> make_ota_backend();
 
 namespace esphome::ota {
 using OTABackendPtr = decltype(make_ota_backend());
-static_assert(OTABackendContract<OTABackendPtr::element_type>,
+using OTABackend = OTABackendPtr::element_type;
+static_assert(OTABackendContract<OTABackend>,
               "The platform's OTA backend is missing part of the backend surface (ota_backend.h)");
 }  // namespace esphome::ota

esphome/components/ota/ota_backend_host.h

@@ -19,7 +19,7 @@ class HostOTABackend final {
   OTAResponseTypes write(uint8_t *data, size_t len);
   OTAResponseTypes end();
   void abort();
-  bool supports_compression() { return false; }
+  static constexpr bool supports_compression() { return false; }
 
  protected:
   md5::MD5Digest md5_{};

esphome/components/sendspin/__init__.py

@@ -6,17 +6,12 @@ from esphome.components import esp32, network, psram, socket, wifi
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_BUFFER_SIZE,
-    CONF_ESPHOME,
     CONF_FORMAT,
     CONF_HEIGHT,
     CONF_ID,
-    CONF_MODEL,
-    CONF_NAME,
-    CONF_PROJECT,
     CONF_SAMPLE_RATE,
     CONF_SOURCE,
     CONF_TASK_STACK_IN_PSRAM,
-    CONF_VERSION,
     CONF_WIDTH,
 )
 from esphome.core import CORE, ID
@@ -32,18 +27,9 @@ DOMAIN = "sendspin"
 CONF_DISPLAY_OFFSET = "display_offset"
 CONF_SENDSPIN_ID = "sendspin_id"
 
-CONF_FIRMWARE_VERSION = "firmware_version"
-CONF_MANUFACTURER = "manufacturer"
-
-# An empty device information string would be sent to the server as an empty value rather than
-# falling back, so reject it instead of silently substituting the fallback. The 127 byte cap keeps
-# the length prefix of a protobuf string field to a single byte, matching `esphome: project:`.
-DEVICE_INFO_STRING = cv.All(cv.string_strict, cv.Length(min=1), cv.ByteLength(max=127))
-
 CONF_INITIAL_STATIC_DELAY = "initial_static_delay"
 CONF_FIXED_DELAY = "fixed_delay"
 CONF_DECODE_MEMORY = "decode_memory"
-CONF_CODECS = "codecs"
 
 # Matches ARTWORK_MAX_SLOTS in sendspin-cpp.
 MAX_ARTWORK_SLOTS = 4
@@ -58,20 +44,6 @@ CODEC_FORMAT_OPUS = SendspinCodecFormat.enum("OPUS")
 CODEC_FORMAT_PCM = SendspinCodecFormat.enum("PCM")
 CODEC_FORMAT_UNSUPPORTED = SendspinCodecFormat.enum("UNSUPPORTED")
 
-CODEC_FLAC = "flac"
-CODEC_OPUS = "opus"
-CODEC_PCM = "pcm"
-
-CODECS = {
-    CODEC_FLAC: CODEC_FORMAT_FLAC,
-    CODEC_OPUS: CODEC_FORMAT_OPUS,
-    CODEC_PCM: CODEC_FORMAT_PCM,
-}
-
-# Opus only supports 48 kHz audio, so it is left out of the default list at other rates.
-DEFAULT_CODECS = [CODEC_FLAC, CODEC_OPUS, CODEC_PCM]
-OPUS_SAMPLE_RATE = 48000
-
 SendspinImageFormat = sendspin_library_ns.enum("SendspinImageFormat", is_class=True)
 IMAGE_FORMAT_JPEG = SendspinImageFormat.enum("JPEG")
 IMAGE_FORMAT_PNG = SendspinImageFormat.enum("PNG")
@@ -211,9 +183,6 @@ CONFIG_SCHEMA = cv.All(
         {
             cv.GenerateID(): cv.declare_id(SendspinHub),
             cv.Optional(CONF_TASK_STACK_IN_PSRAM): psram.validate_task_stack_in_psram,
-            cv.Optional(CONF_MANUFACTURER): DEVICE_INFO_STRING,
-            cv.Optional(CONF_MODEL): DEVICE_INFO_STRING,
-            cv.Optional(CONF_FIRMWARE_VERSION): DEVICE_INFO_STRING,
         }
     ),
     cv.only_on_esp32,
@@ -264,22 +233,6 @@ async def to_code(config: ConfigType) -> None:
         cg.add(var.set_task_stack_in_psram(True))
         psram.request_external_task_stack()
 
-    # Device information for the server's client/hello message. Falls back to the project
-    # information, which is written as `manufacturer.model`. Anything still unset keeps the
-    # default the hub itself applies: the ESPHome name and version.
-    project = CORE.config[CONF_ESPHOME].get(CONF_PROJECT, {})
-    project_manufacturer, _, project_model = project.get(CONF_NAME, "").partition(".")
-    for value, setter in (
-        (config.get(CONF_MANUFACTURER) or project_manufacturer, var.set_manufacturer),
-        (config.get(CONF_MODEL) or project_model, var.set_model),
-        (
-            config.get(CONF_FIRMWARE_VERSION) or project.get(CONF_VERSION),
-            var.set_firmware_version,
-        ),
-    ):
-        if value:
-            cg.add(setter(value))
-
     # sendspin-cpp library
     esp32.add_idf_component(name="sendspin/sendspin-cpp", ref="0.7.2")
 
@@ -333,13 +286,16 @@ async def to_code(config: ConfigType) -> None:
     if data.player_support:
         cg.add_define("USE_SENDSPIN_PLAYER", True)
 
-        # Configures the player role. Each configured codec is advertised for 16 bits per sample
-        # mono and stereo at the configured sample rate. The order is a preference order, both for
-        # the codecs themselves and for stereo over mono.
+        # Configures the player role. We always assume support for 16 bits per sample mono and stereo FLAC, Opus, and PCM at the configured sample rate
+        # (with Opus only supported at 48 kHz since that's the only sample rate it supports). Users can configure the specific formats via the Sendspin server
         player_cfg = data.player_config
         sample_rate = player_cfg[CONF_SAMPLE_RATE]
 
-        codecs = [CODECS[codec] for codec in player_cfg[CONF_CODECS]]
+        # OPUS only supports 48 kHz audio
+        codecs = [CODEC_FORMAT_FLAC]
+        if sample_rate == 48000:
+            codecs.append(CODEC_FORMAT_OPUS)
+        codecs.append(CODEC_FORMAT_PCM)
 
         def _audio_format(codec: MockObj, channels: int) -> cg.StructInitializer:
             return cg.StructInitializer(

esphome/components/sendspin/media_source/__init__.py

@@ -13,16 +13,11 @@ from esphome.cpp_generator import MockObj, TemplateArgsType
 from esphome.types import ConfigType
 
 from .. import (
-    CODEC_OPUS,
-    CODECS,
-    CONF_CODECS,
     CONF_DECODE_MEMORY,
     CONF_FIXED_DELAY,
     CONF_INITIAL_STATIC_DELAY,
     CONF_SENDSPIN_ID,
-    DEFAULT_CODECS,
     MEMORY_LOCATIONS,
-    OPUS_SAMPLE_RATE,
     SendspinHub,
     register_player_config,
     request_controller_support,
@@ -54,32 +49,10 @@ DisableStaticDelayAdjustmentAction = sendspin_ns.class_(
 )
 
 
-def _resolve_codecs(config: ConfigType) -> ConfigType:
-    """Validate the codec preference list, filling in the default when it is not set."""
-    sample_rate = config[CONF_SAMPLE_RATE]
-    if (codecs := config.get(CONF_CODECS)) is None:
-        config[CONF_CODECS] = [
-            codec
-            for codec in DEFAULT_CODECS
-            if codec != CODEC_OPUS or sample_rate == OPUS_SAMPLE_RATE
-        ]
-        return config
-
-    if len(set(codecs)) != len(codecs):
-        raise cv.Invalid("Each codec may only be listed once", path=[CONF_CODECS])
-    if CODEC_OPUS in codecs and sample_rate != OPUS_SAMPLE_RATE:
-        raise cv.Invalid(
-            f"Codec '{CODEC_OPUS}' requires a {CONF_SAMPLE_RATE} of {OPUS_SAMPLE_RATE}",
-            path=[CONF_CODECS],
-        )
-    return config
-
-
 def _register(config: ConfigType) -> ConfigType:
     request_controller_support()
     register_player_config(
         {
-            CONF_CODECS: config[CONF_CODECS],
             CONF_SAMPLE_RATE: config[CONF_SAMPLE_RATE],
             CONF_BUFFER_SIZE: config[CONF_BUFFER_SIZE],
             CONF_INITIAL_STATIC_DELAY: config[CONF_INITIAL_STATIC_DELAY],
@@ -112,13 +85,9 @@ CONFIG_SCHEMA = cv.All(
                 min=16000, max=96000
             ),
             cv.Optional(CONF_DECODE_MEMORY): cv.one_of(*MEMORY_LOCATIONS, lower=True),
-            cv.Optional(CONF_CODECS): cv.All(
-                cv.ensure_list(cv.enum(CODECS, lower=True)), cv.Length(min=1)
-            ),
         }
     ),
     cv.only_on_esp32,
-    _resolve_codecs,
     _register,
 )
 

esphome/components/sendspin/sendspin_hub.cpp

@@ -76,12 +76,8 @@ void SendspinHub::dump_config() {
   ESP_LOGCONFIG(TAG,
                 "Sendspin Hub:\n"
                 "  Client ID: %s\n"
-                "  Manufacturer: %s\n"
-                "  Model: %s\n"
-                "  Firmware version: %s\n"
                 "  Task stack in PSRAM: %s",
-                get_client_id_into_buffer(mac_buf), this->manufacturer_, this->get_product_name_(),
-                this->firmware_version_, YESNO(this->task_stack_in_psram_));
+                get_client_id_into_buffer(mac_buf), YESNO(this->task_stack_in_psram_));
 
 #ifdef USE_SENDSPIN_ARTWORK
   // Slot indices come from the order the image platform entries were declared, so the log is the
@@ -131,19 +127,15 @@ const char *SendspinHub::get_client_id_into_buffer(std::span<char, MAC_ADDRESS_P
   return get_mac_address_pretty_into_buffer(buf);
 }
 
-const char *SendspinHub::get_product_name_() const {
-  return this->model_ != nullptr ? this->model_ : App.get_name().c_str();
-}
-
 sendspin::SendspinClientConfig SendspinHub::build_client_config_() {
   sendspin::SendspinClientConfig config;
 
   char mac_buf[MAC_ADDRESS_PRETTY_BUFFER_SIZE];
   config.client_id = SendspinHub::get_client_id_into_buffer(mac_buf);
   config.name = App.get_friendly_name();
-  config.product_name = this->get_product_name_();
-  config.manufacturer = this->manufacturer_;
-  config.software_version = this->firmware_version_;
+  config.product_name = App.get_name();
+  config.manufacturer = "ESPHome";
+  config.software_version = ESPHOME_VERSION;
   config.httpd_psram_stack = this->task_stack_in_psram_;
 
   return config;

esphome/components/sendspin/sendspin_hub.h

@@ -8,7 +8,6 @@
 #include "esphome/core/component.h"
 #include "esphome/core/helpers.h"
 #include "esphome/core/preferences.h"
-#include "esphome/core/version.h"
 
 #include <sendspin/client.h>
 #include <sendspin/config.h>
@@ -126,15 +125,6 @@ class SendspinHub final : public Component,
 
   void set_task_stack_in_psram(bool task_stack_in_psram) { this->task_stack_in_psram_ = task_stack_in_psram; }
 
-  /// @brief Sets the device information reported to the server in the `client/hello` message.
-  ///
-  /// Each takes a pointer to a string literal emitted by codegen, so it must stay valid for the
-  /// lifetime of the hub. Only called for values the configuration overrides; anything left alone
-  /// keeps the default described on the member below.
-  void set_manufacturer(const char *manufacturer) { this->manufacturer_ = manufacturer; }
-  void set_model(const char *model) { this->model_ = model; }
-  void set_firmware_version(const char *firmware_version) { this->firmware_version_ = firmware_version; }
-
   // --- Sendspin role specific methods ---
 
 #ifdef USE_SENDSPIN_ARTWORK
@@ -197,9 +187,6 @@ class SendspinHub final : public Component,
   /// @brief Builds the SendspinClientConfig from ESPHome configuration and platform info.
   sendspin::SendspinClientConfig build_client_config_();
 
-  /// @brief Returns the product name reported to the server: the configured model, or the device name.
-  const char *get_product_name_() const;
-
   /// @brief Writes the active network interface's MAC into @p buf and returns its data pointer.
   /// Uses the ethernet MAC if ethernet is configured, otherwise the base MAC (used by wifi).
   static const char *get_client_id_into_buffer(std::span<char, MAC_ADDRESS_PRETTY_BUFFER_SIZE> buf);
@@ -281,12 +268,6 @@ class SendspinHub final : public Component,
   CallbackManager<void(const sendspin::GroupUpdateObject &)> group_update_callbacks_{};
 
   bool task_stack_in_psram_{false};
-
-  // Device information sent in the `client/hello` message. Defaults apply when neither the
-  // sendspin configuration nor the project information supplies a value.
-  const char *manufacturer_{"ESPHome"};
-  const char *model_{nullptr};  // nullptr reports the device name instead
-  const char *firmware_version_{ESPHOME_VERSION};
 };
 
 /// @brief Base class for all sendspin subcomponents.

esphome/components/serial_proxy/__init__.py

@@ -30,7 +30,6 @@ MULTI_CONF = True
 
 serial_proxy_ns = cg.esphome_ns.namespace("serial_proxy")
 SerialProxy = serial_proxy_ns.class_("SerialProxy", cg.Component, uart.UARTDevice)
-SerialProxyTap = serial_proxy_ns.class_("SerialProxyTap")
 
 api_enums_ns = cg.esphome_ns.namespace("api").namespace("enums")
 SerialProxyPortType = api_enums_ns.enum("SerialProxyPortType")

esphome/components/serial_proxy/serial_proxy.cpp

@@ -29,57 +29,26 @@ void SerialProxy::setup() {
 #ifdef USE_API
   // instance_index_ is fixed at registration time; pre-set it so loop() only needs to update data
   this->outgoing_msg_.instance = this->instance_index_;
-#endif
-#ifdef USE_SERIAL_PROXY_TAP
-  // A tap sets itself up before this runs (its setup priority is higher), so it may
-  // already be waiting on the port -- a boot-time handshake with the device, say. Leaving
-  // the loop enabled is what lets that finish; without it the tap would stall until a
-  // client happened to subscribe.
-  if (this->tap_ != nullptr && this->tap_->tap_needs_port()) {
-    return;
-  }
 #endif
   // No subscriber at startup; disable loop until a client subscribes
   this->disable_loop();
 }
 
-#ifdef USE_SERIAL_PROXY_TAP
-void SerialProxy::reset_mode_() {
-  // The mode belongs to a session, not to the port. Carrying a departed client's choice
-  // over to the next one would inject protocol bytes into a stream that never asked for
-  // them -- a firmware upload, or any client built before this request existed and so
-  // unable to turn it off. Guessing RAW is the safe direction: a client that wanted
-  // protocol handling and did not ask for it merely sends its own acknowledgements.
-  if (this->mode_ == api::enums::SERIAL_PROXY_MODE_RAW) {
-    return;
-  }
-  ESP_LOGD(TAG, "Session ended, returning serial proxy [%" PRIu32 "] to RAW mode", this->instance_index_);
-  this->mode_ = api::enums::SERIAL_PROXY_MODE_RAW;
-}
-#endif
-
 void SerialProxy::loop() {
 #ifdef USE_API
-  // Detect subscriber disconnect
-  if (this->api_connection_ != nullptr && (this->api_connection_->is_marked_for_removal() ||
-                                           !this->api_connection_->is_connection_setup() || !api_is_connected())) {
-    ESP_LOGW(TAG, "Subscriber disconnected");
-    this->api_connection_ = nullptr;
-    this->reset_mode_();
-  }
-
-  // With no subscriber there is normally nothing to do, but a tap may still need the port
-  // read -- it does its protocol work precisely while nobody else is listening.
+  // Safety check — loop should only run when subscribed, but guard against races
   if (this->api_connection_ == nullptr) [[unlikely]] {
-#ifdef USE_SERIAL_PROXY_TAP
-    if (this->tap_ == nullptr || !this->tap_->tap_needs_port()) {
-      this->disable_loop();
-      return;
-    }
-#else
     this->disable_loop();
     return;
-#endif
+  }
+
+  // Detect subscriber disconnect
+  if (this->api_connection_->is_marked_for_removal() || !this->api_connection_->is_connection_setup() ||
+      !api_is_connected()) {
+    ESP_LOGW(TAG, "Subscriber disconnected");
+    this->api_connection_ = nullptr;
+    this->disable_loop();
+    return;
   }
 
   // Read available data from UART and forward to subscribed client
@@ -100,54 +69,11 @@ void __attribute__((noinline)) SerialProxy::read_and_send_(size_t available) {
   if (!this->read_array(buffer, to_read))
     return;
 
-#ifdef USE_SERIAL_PROXY_TAP
-  // Before forwarding, so a tap that answers the device (an acknowledgement, say) is not
-  // waiting on the network round trip to a subscriber that may not even exist.
-  if (this->tap_observing_()) {
-    this->tap_->on_device_rx(buffer, to_read);
-  }
-#endif
-
-  if (this->api_connection_ == nullptr) {
-    return;
-  }
   this->outgoing_msg_.set_data(buffer, to_read);
   this->api_connection_->send_serial_proxy_data(this->outgoing_msg_);
 }
 #endif
 
-#ifdef USE_SERIAL_PROXY_TAP
-
-bool SerialProxy::tap_observing_() const {
-  if (this->tap_ == nullptr) {
-    return false;
-  }
-  // With no subscriber, a tap doing its own protocol work (the boot-time handshake with
-  // the device, say) is served regardless of mode -- nobody has chosen one yet. Once a
-  // subscriber holds the port, the mode alone decides, so RAW stays inert.
-  if (this->api_connection_ == nullptr && this->tap_->tap_needs_port()) {
-    return true;
-  }
-  // Otherwise the mode decides. RAW must be inert: a client that flips to RAW before
-  // flashing firmware is entitled to a byte pipe with nothing injecting protocol bytes
-  // into it, and "the tap turned out not to recognise the stream" is not good enough.
-  return this->mode_ == api::enums::SERIAL_PROXY_MODE_PROTOCOL;
-}
-
-void SerialProxy::tap_pump() {
-#ifdef USE_API
-  // Nothing would consume the bytes; leave them in the FIFO
-  if (!this->tap_observing_() && this->api_connection_ == nullptr) {
-    return;
-  }
-  const size_t available = this->available();
-  if (available > 0) {
-    this->read_and_send_(available);
-  }
-#endif
-}
-#endif
-
 void SerialProxy::dump_config() {
   ESP_LOGCONFIG(TAG,
                 "Serial Proxy [%" PRIu32 "]:\n"
@@ -166,9 +92,8 @@ void SerialProxy::dump_config() {
 SerialProxyResult SerialProxy::configure(api::APIConnection *api_connection, uint32_t baudrate, bool flow_control,
                                          uint8_t parity, uint8_t stop_bits, uint8_t data_size) {
 #ifdef USE_API
-  if (!this->is_subscriber_(api_connection)) {
-    ESP_LOGW(TAG, "Ignoring configure request from client without port subscription [%" PRIu32 "]",
-             this->instance_index_);
+  if (this->port_claimed_by_other_(api_connection)) {
+    ESP_LOGW(TAG, "Ignoring configure request from client without port access [%" PRIu32 "]", this->instance_index_);
     return SerialProxyResult::SERIAL_PROXY_RESULT_PORT_IN_USE;
   }
 #endif
@@ -234,80 +159,24 @@ SerialProxyResult SerialProxy::configure(api::APIConnection *api_connection, uin
   return SerialProxyResult::SERIAL_PROXY_RESULT_OK;
 }
 
-SerialProxyResult SerialProxy::set_mode_from_client(api::APIConnection *api_connection,
-                                                    api::enums::SerialProxyMode mode) {
-#ifdef USE_API
-  // Only the live subscriber may change the mode, so the mode cannot outlive a session
-  if (!this->is_subscriber_(api_connection)) {
-    ESP_LOGW(TAG, "Ignoring mode request from client without port subscription [%" PRIu32 "]", this->instance_index_);
-    return SerialProxyResult::SERIAL_PROXY_RESULT_PORT_IN_USE;
-  }
-#endif
-  // Values come from a remote client
-  if (mode != api::enums::SERIAL_PROXY_MODE_RAW && mode != api::enums::SERIAL_PROXY_MODE_PROTOCOL) {
-    ESP_LOGW(TAG, "Invalid mode: %" PRIu32, static_cast<uint32_t>(mode));
-    return SerialProxyResult::SERIAL_PROXY_RESULT_INVALID_ARGUMENT;
-  }
-  // PROTOCOL on a port with no tap would be a silent no-op; refuse so the client knows
-#ifdef USE_SERIAL_PROXY_TAP
-  const bool has_tap = this->tap_ != nullptr;
-#else
-  const bool has_tap = false;
-#endif
-  if (mode == api::enums::SERIAL_PROXY_MODE_PROTOCOL && !has_tap) {
-    ESP_LOGW(TAG, "No tap on serial proxy [%" PRIu32 "]; PROTOCOL mode unavailable", this->instance_index_);
-    return SerialProxyResult::SERIAL_PROXY_RESULT_NOT_SUPPORTED;
-  }
-  ESP_LOGD(TAG, "Serial proxy [%" PRIu32 "] mode set to %s", this->instance_index_,
-           mode == api::enums::SERIAL_PROXY_MODE_PROTOCOL ? LOG_STR_LITERAL("PROTOCOL") : LOG_STR_LITERAL("RAW"));
-#ifdef USE_SERIAL_PROXY_TAP
-  const bool leaving_protocol_mode =
-      this->mode_ != api::enums::SERIAL_PROXY_MODE_RAW && mode == api::enums::SERIAL_PROXY_MODE_RAW;
-  this->mode_ = mode;
-
-  // Only for an explicit client request, not for reset_mode_() at the end of a session:
-  // an ordinary disconnect says nothing about the device, whereas a client deliberately
-  // asking for raw bytes usually precedes changing what the device is.
-  if (leaving_protocol_mode && this->tap_ != nullptr) {
-    this->tap_->on_protocol_disabled();
-  }
-#endif
-  return SerialProxyResult::SERIAL_PROXY_RESULT_OK;
-}
-
 void SerialProxy::write_from_client(api::APIConnection *api_connection, const uint8_t *data, size_t len) {
 #ifdef USE_API
-  // Bytes from anyone but the live subscriber would interleave with the subscriber's
-  // traffic -- or with an active tap's -- on the wire
-  if (!this->is_subscriber_(api_connection)) {
-    if (this->api_connection_ != nullptr) {
-      ESP_LOGW(TAG, "Ignoring write from client that does not hold serial proxy [%" PRIu32 "]", this->instance_index_);
-    } else {
-      // A legacy client streaming writes without subscribing would flood WARN, one per
-      // request; writes are the only high-rate, unacknowledged operation, so keep this
-      // visible without drowning the log
-      ESP_LOGV(TAG, "Ignoring write from client without port subscription [%" PRIu32 "]", this->instance_index_);
-    }
+  // Bytes from a client other than the live subscriber would interleave with the
+  // subscriber's traffic on the wire
+  if (this->port_claimed_by_other_(api_connection)) {
+    ESP_LOGW(TAG, "Ignoring write from client without port access [%" PRIu32 "]", this->instance_index_);
     return;
   }
 #endif
   if (data == nullptr || len == 0)
     return;
   this->write_array(data, len);
-
-#ifdef USE_SERIAL_PROXY_TAP
-  // After the write, so the tap observes the same ordering the device does
-  if (this->tap_observing_()) {
-    this->tap_->on_client_tx(data, len);
-  }
-#endif
 }
 
 SerialProxyResult SerialProxy::set_modem_pins(api::APIConnection *api_connection, uint32_t line_states) {
 #ifdef USE_API
-  if (!this->is_subscriber_(api_connection)) {
-    ESP_LOGW(TAG, "Ignoring modem pin request from client without port subscription [%" PRIu32 "]",
-             this->instance_index_);
+  if (this->port_claimed_by_other_(api_connection)) {
+    ESP_LOGW(TAG, "Ignoring modem pin request from client without port access [%" PRIu32 "]", this->instance_index_);
     return SerialProxyResult::SERIAL_PROXY_RESULT_PORT_IN_USE;
   }
 #endif
@@ -341,8 +210,8 @@ uint32_t SerialProxy::get_modem_pins() const {
 SerialProxyResult SerialProxy::flush_port(api::APIConnection *api_connection) {
 #ifdef USE_API
   // Flushing stalls the port, so it gets the same ownership check as writes
-  if (!this->is_subscriber_(api_connection)) {
-    ESP_LOGW(TAG, "Ignoring flush from client without port subscription [%" PRIu32 "]", this->instance_index_);
+  if (this->port_claimed_by_other_(api_connection)) {
+    ESP_LOGW(TAG, "Ignoring flush from client without port access [%" PRIu32 "]", this->instance_index_);
     return SerialProxyResult::SERIAL_PROXY_RESULT_PORT_IN_USE;
   }
 #endif
@@ -361,6 +230,11 @@ SerialProxyResult SerialProxy::flush_port(api::APIConnection *api_connection) {
 }
 
 #ifdef USE_API
+bool SerialProxy::port_claimed_by_other_(api::APIConnection *api_connection) const {
+  return this->api_connection_ != nullptr && this->api_connection_ != api_connection &&
+         this->api_connection_->is_connection_setup();
+}
+
 SerialProxyResult SerialProxy::serial_proxy_request(api::APIConnection *api_connection,
                                                     api::enums::SerialProxyRequestType type) {
   switch (type) {
@@ -378,10 +252,6 @@ SerialProxyResult SerialProxy::serial_proxy_request(api::APIConnection *api_conn
           return SerialProxyResult::SERIAL_PROXY_RESULT_PORT_IN_USE;
         }
         ESP_LOGW(TAG, "Previous subscriber disconnected; taking over subscription");
-        // End the dead client's session before starting the new one, so its mode
-        // cannot leak into a session that never asked for it
-        this->api_connection_ = nullptr;
-        this->reset_mode_();
       }
       this->api_connection_ = api_connection;
       this->enable_loop();
@@ -394,15 +264,7 @@ SerialProxyResult SerialProxy::serial_proxy_request(api::APIConnection *api_conn
         return SerialProxyResult::SERIAL_PROXY_RESULT_OK;
       }
       this->api_connection_ = nullptr;
-      this->reset_mode_();
-#ifdef USE_SERIAL_PROXY_TAP
-      // Keep the loop alive for a tap that still needs the port (mirrors loop())
-      if (this->tap_ == nullptr || !this->tap_->tap_needs_port()) {
-        this->disable_loop();
-      }
-#else
       this->disable_loop();
-#endif
       ESP_LOGV(TAG, "API connection unsubscribed from serial proxy [%" PRIu32 "]", this->instance_index_);
       return SerialProxyResult::SERIAL_PROXY_RESULT_OK;
     default:

esphome/components/serial_proxy/serial_proxy.h

@@ -26,7 +26,6 @@ class APIConnection;
 namespace enums {
 enum SerialProxyPortType : uint32_t;
 enum SerialProxyRequestType : uint32_t;
-enum SerialProxyMode : uint32_t;
 }  // namespace enums
 }  // namespace esphome::api
 
@@ -53,36 +52,6 @@ enum class SerialProxyResult : uint8_t {
 /// Maximum bytes to read from UART in a single loop iteration
 inline constexpr size_t SERIAL_PROXY_MAX_READ_SIZE = 256;
 
-#ifdef USE_SERIAL_PROXY_TAP
-/// Observes a port's traffic without owning it, and may inject bytes of its own.
-///
-/// This exists so protocol-aware behaviour can be layered onto a plain byte pipe without
-/// the pipe knowing anything about the protocol: the tap is compiled in only when some
-/// component asks for one, so a proxy carrying an RS485 meter pays nothing for it.
-///
-/// A tap is an observer, never a gatekeeper -- it cannot suppress or alter the bytes
-/// flowing in either direction, so a misbehaving tap cannot corrupt the stream.
-class SerialProxyTap {
- public:
-  /// Bytes read from the device, before they are forwarded to any subscriber.
-  virtual void on_device_rx(const uint8_t *data, size_t len) = 0;
-
-  /// Bytes a subscriber sent towards the device, after they have been written.
-  virtual void on_client_tx(const uint8_t *data, size_t len) = 0;
-
-  /// True when the port must keep reading even with no subscriber attached, so a tap can
-  /// do its own protocol work while nobody is listening. Honoured only while no
-  /// subscriber holds the port; with one attached, the port mode alone decides.
-  virtual bool tap_needs_port() const = 0;
-
-  /// A client explicitly turned protocol handling off for this port. Distinct from the
-  /// automatic reset when a session ends: this one means a client intends to do something
-  /// else with the device -- reflash it, most likely -- so anything the tap believes about
-  /// it should be treated as suspect.
-  virtual void on_protocol_disabled() = 0;
-};
-#endif
-
 class SerialProxy final : public uart::UARTDevice, public Component {
  public:
   void setup() override;
@@ -108,9 +77,6 @@ class SerialProxy final : public uart::UARTDevice, public Component {
   /// Get the port type
   api::enums::SerialProxyPortType get_port_type() const { return this->port_type_; }
 
-  /// Handle a mode change requested by an API client
-  SerialProxyResult set_mode_from_client(api::APIConnection *api_connection, api::enums::SerialProxyMode mode);
-
   /// Configure UART parameters and apply them
   /// @param api_connection The API connection requesting the change
   /// @param baudrate Baud rate in bits per second
@@ -155,67 +121,13 @@ class SerialProxy final : public uart::UARTDevice, public Component {
   /// Set the DTR GPIO pin (from YAML configuration)
   void set_dtr_pin(GPIOPin *pin) { this->dtr_pin_ = pin; }
 
-#ifdef USE_SERIAL_PROXY_TAP
-  /// Attach a traffic observer. At most one, set once at setup time.
-  void set_tap(SerialProxyTap *tap) { this->tap_ = tap; }
-
-  /// Write bytes originating from the tap rather than from a client. Bypasses the
-  /// subscriber ownership check, but only while the tap is being served bytes -- so a
-  /// port in RAW mode with a subscriber attached stays inert. Returns false when the
-  /// bytes were dropped for that reason.
-  bool write_from_tap(const uint8_t *data, size_t len) {
-    if (!this->tap_observing_()) {
-      return false;
-    }
-    this->write_array(data, len);
-    return true;
-  }
-
-  /// Whether the tap is currently being served bytes. Can flip false with no callback
-  /// (a subscriber attaching in RAW mode, say), so a tap should check before starting
-  /// protocol work and when a reply seems overdue.
-  bool tap_is_observed() const { return this->tap_observing_(); }
-
-  /// Resume reading after a tap's needs change. loop() disables itself when there is
-  /// neither a subscriber nor a tap that wants the port, so a tap starting fresh work
-  /// must ask for it back. Must be called from the main loop.
-  void tap_request_port() { this->enable_loop(); }
-
-  /// Whether the underlying device is present. On a USB UART this tracks enumeration, so
-  /// a tap can notice the device being unplugged and plugged back in.
-  bool is_device_connected() const { return this->parent_->is_connected(); }
-
-  /// Run one read-and-dispatch cycle immediately. Lets a tap make progress before the
-  /// main loop is running -- during setup, for instance, while a component is still
-  /// blocking on can_proceed(). Must not be called from on_device_rx() or
-  /// on_client_tx(): each nested cycle costs a 256-byte stack frame.
-  void tap_pump();
-#endif
-
  protected:
 #ifdef USE_API
-  /// Read from UART, hand the bytes to any tap, and forward them to a subscriber
-  /// (slow path with a 256-byte stack buffer)
+  /// Read from UART and send to API client (slow path with 256-byte stack buffer)
   void read_and_send_(size_t available);
 
-  /// True when the given connection is the live subscriber. Every port operation
-  /// (write, configure, modem pins, flush, mode) requires this, so an unsubscribed
-  /// client can never share the wire with the subscriber or an active tap.
-  bool is_subscriber_(api::APIConnection *api_connection) const { return this->api_connection_ == api_connection; }
-#endif
-
-#ifdef USE_SERIAL_PROXY_TAP
-  /// Return the port to RAW when a subscriber goes away, so the mode never outlives it
-  void reset_mode_();
-#else
-  /// Without a tap, PROTOCOL is refused, so the mode is fixed at RAW and there is
-  /// nothing to reset
-  void reset_mode_() {}
-#endif
-
-#ifdef USE_SERIAL_PROXY_TAP
-  /// True when the tap should be shown the traffic passing through this port
-  bool tap_observing_() const;
+  /// True when a live subscriber other than the given connection holds the port
+  bool port_claimed_by_other_(api::APIConnection *api_connection) const;
 #endif
 
   /// Instance index for identifying this proxy in API messages
@@ -235,11 +147,6 @@ class SerialProxy final : public uart::UARTDevice, public Component {
   /// Port type
   api::enums::SerialProxyPortType port_type_{};
 
-#ifdef USE_SERIAL_PROXY_TAP
-  /// How the bytes passing through are treated; zero is SERIAL_PROXY_MODE_RAW
-  api::enums::SerialProxyMode mode_{};
-#endif
-
   /// Optional GPIO pins for modem control
   GPIOPin *rts_pin_{nullptr};
   GPIOPin *dtr_pin_{nullptr};
@@ -247,10 +154,6 @@ class SerialProxy final : public uart::UARTDevice, public Component {
   /// Current modem pin states
   bool rts_state_{false};
   bool dtr_state_{false};
-
-#ifdef USE_SERIAL_PROXY_TAP
-  SerialProxyTap *tap_{nullptr};
-#endif
 };
 
 }  // namespace esphome::serial_proxy

esphome/components/template/binary_sensor/__init__.py

@@ -2,13 +2,7 @@ from esphome import automation
 import esphome.codegen as cg
 from esphome.components import binary_sensor
 import esphome.config_validation as cv
-from esphome.const import (
-    CONF_CONDITION,
-    CONF_DEVICE_CLASS,
-    CONF_ID,
-    CONF_LAMBDA,
-    CONF_STATE,
-)
+from esphome.const import CONF_CONDITION, CONF_ID, CONF_LAMBDA, CONF_STATE
 from esphome.cpp_generator import LambdaExpression
 
 from .. import template_ns
@@ -18,11 +12,7 @@ TemplateBinarySensor = template_ns.class_(
 )
 
 CONFIG_SCHEMA = (
-    cv.with_visibility(
-        binary_sensor.binary_sensor_schema(TemplateBinarySensor),
-        cv.Visibility.UI,
-        CONF_DEVICE_CLASS,
-    )
+    binary_sensor.binary_sensor_schema(TemplateBinarySensor)
     .extend(
         {
             cv.Exclusive(CONF_LAMBDA, CONF_CONDITION): cv.returning_lambda,

esphome/components/template/button/__init__.py

@@ -1,14 +1,10 @@
 from esphome.components import button
-import esphome.config_validation as cv
-from esphome.const import CONF_DEVICE_CLASS
 
 from .. import template_ns
 
 TemplateButton = template_ns.class_("TemplateButton", button.Button)
 
-CONFIG_SCHEMA = cv.with_visibility(
-    button.button_schema(TemplateButton), cv.Visibility.UI, CONF_DEVICE_CLASS
-)
+CONFIG_SCHEMA = button.button_schema(TemplateButton)
 
 
 async def to_code(config):

esphome/components/template/cover/__init__.py

@@ -6,7 +6,6 @@ from esphome.const import (
     CONF_ASSUMED_STATE,
     CONF_CLOSE_ACTION,
     CONF_CURRENT_OPERATION,
-    CONF_DEVICE_CLASS,
     CONF_ID,
     CONF_LAMBDA,
     CONF_OPEN_ACTION,
@@ -39,11 +38,7 @@ CONF_HAS_POSITION = "has_position"
 CONF_TOGGLE_ACTION = "toggle_action"
 
 CONFIG_SCHEMA = (
-    cv.with_visibility(
-        cover.cover_schema(TemplateCover),
-        cv.Visibility.UI,
-        CONF_DEVICE_CLASS,
-    )
+    cover.cover_schema(TemplateCover)
     .extend(
         {
             cv.Optional(CONF_LAMBDA): cv.returning_lambda,

esphome/components/template/event/__init__.py

@@ -1,7 +1,7 @@
 import esphome.codegen as cg
 from esphome.components import event
 import esphome.config_validation as cv
-from esphome.const import CONF_DEVICE_CLASS, CONF_EVENT_TYPES
+from esphome.const import CONF_EVENT_TYPES
 
 from .. import template_ns
 
@@ -9,9 +9,7 @@ CODEOWNERS = ["@nohat"]
 
 TemplateEvent = template_ns.class_("TemplateEvent", event.Event, cg.Component)
 
-CONFIG_SCHEMA = cv.with_visibility(
-    event.event_schema(TemplateEvent), cv.Visibility.UI, CONF_DEVICE_CLASS
-).extend(
+CONFIG_SCHEMA = event.event_schema(TemplateEvent).extend(
     {
         cv.Required(CONF_EVENT_TYPES): cv.ensure_list(cv.string_strict),
     }

esphome/components/template/number/__init__.py

@@ -3,7 +3,6 @@ import esphome.codegen as cg
 from esphome.components import number
 import esphome.config_validation as cv
 from esphome.const import (
-    CONF_DEVICE_CLASS,
     CONF_ID,
     CONF_INITIAL_VALUE,
     CONF_LAMBDA,
@@ -13,7 +12,6 @@ from esphome.const import (
     CONF_RESTORE_VALUE,
     CONF_SET_ACTION,
     CONF_STEP,
-    CONF_UNIT_OF_MEASUREMENT,
 )
 
 from .. import template_ns
@@ -48,12 +46,7 @@ def validate(config):
 
 
 CONFIG_SCHEMA = cv.All(
-    cv.with_visibility(
-        number.number_schema(TemplateNumber),
-        cv.Visibility.UI,
-        CONF_DEVICE_CLASS,
-        CONF_UNIT_OF_MEASUREMENT,
-    )
+    number.number_schema(TemplateNumber)
     .extend(
         {
             cv.Required(CONF_MAX_VALUE): cv.float_,

esphome/components/template/sensor/__init__.py

@@ -2,16 +2,7 @@ from esphome import automation
 import esphome.codegen as cg
 from esphome.components import sensor
 import esphome.config_validation as cv
-from esphome.const import (
-    CONF_ACCURACY_DECIMALS,
-    CONF_DEVICE_CLASS,
-    CONF_FORCE_UPDATE,
-    CONF_ID,
-    CONF_LAMBDA,
-    CONF_STATE,
-    CONF_STATE_CLASS,
-    CONF_UNIT_OF_MEASUREMENT,
-)
+from esphome.const import CONF_ID, CONF_LAMBDA, CONF_STATE
 
 from .. import template_ns
 
@@ -20,14 +11,9 @@ TemplateSensor = template_ns.class_(
 )
 
 CONFIG_SCHEMA = (
-    cv.with_visibility(
-        sensor.sensor_schema(TemplateSensor, accuracy_decimals=1),
-        cv.Visibility.UI,
-        CONF_UNIT_OF_MEASUREMENT,
-        CONF_ACCURACY_DECIMALS,
-        CONF_DEVICE_CLASS,
-        CONF_STATE_CLASS,
-        CONF_FORCE_UPDATE,
+    sensor.sensor_schema(
+        TemplateSensor,
+        accuracy_decimals=1,
     )
     .extend(
         {

esphome/components/template/switch/__init__.py

@@ -4,7 +4,6 @@ from esphome.components import switch
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_ASSUMED_STATE,
-    CONF_DEVICE_CLASS,
     CONF_ID,
     CONF_LAMBDA,
     CONF_OPTIMISTIC,
@@ -32,11 +31,7 @@ def validate(config):
 
 
 CONFIG_SCHEMA = cv.All(
-    cv.with_visibility(
-        switch.switch_schema(TemplateSwitch),
-        cv.Visibility.UI,
-        CONF_DEVICE_CLASS,
-    )
+    switch.switch_schema(TemplateSwitch)
     .extend(
         {
             cv.Optional(CONF_LAMBDA): cv.returning_lambda,

esphome/components/template/text_sensor/__init__.py

@@ -3,7 +3,7 @@ import esphome.codegen as cg
 from esphome.components import text_sensor
 from esphome.components.text_sensor import TextSensorPublishAction
 import esphome.config_validation as cv
-from esphome.const import CONF_DEVICE_CLASS, CONF_ID, CONF_LAMBDA, CONF_STATE
+from esphome.const import CONF_ID, CONF_LAMBDA, CONF_STATE
 
 from .. import template_ns
 
@@ -12,11 +12,7 @@ TemplateTextSensor = template_ns.class_(
 )
 
 CONFIG_SCHEMA = (
-    cv.with_visibility(
-        text_sensor.text_sensor_schema(),
-        cv.Visibility.UI,
-        CONF_DEVICE_CLASS,
-    )
+    text_sensor.text_sensor_schema()
     .extend(
         {
             cv.GenerateID(): cv.declare_id(TemplateTextSensor),

esphome/components/template/valve/__init__.py

@@ -6,7 +6,6 @@ from esphome.const import (
     CONF_ASSUMED_STATE,
     CONF_CLOSE_ACTION,
     CONF_CURRENT_OPERATION,
-    CONF_DEVICE_CLASS,
     CONF_ID,
     CONF_LAMBDA,
     CONF_OPEN_ACTION,
@@ -37,11 +36,7 @@ CONF_HAS_POSITION = "has_position"
 CONF_TOGGLE_ACTION = "toggle_action"
 
 CONFIG_SCHEMA = (
-    cv.with_visibility(
-        valve.valve_schema(TemplateValve),
-        cv.Visibility.UI,
-        CONF_DEVICE_CLASS,
-    )
+    valve.valve_schema(TemplateValve)
     .extend(
         {
             cv.Optional(CONF_LAMBDA): cv.returning_lambda,

esphome/components/zigbee/time/zigbee_time_zephyr.cpp

@@ -1,7 +1,6 @@
 #include "zigbee_time_zephyr.h"
 #if defined(USE_ZIGBEE) && defined(USE_NRF52) && defined(USE_TIME)
 #include "esphome/core/log.h"
-#include "esphome/core/application.h"
 
 namespace esphome::zigbee {
 
@@ -48,7 +47,6 @@ void ZigbeeTime::set_epoch_time(uint32_t epoch) {
     this->synchronize_epoch_(epoch);
     this->has_time_ = true;
   });
-  App.wake_loop_threadsafe();
 }
 
 void ZigbeeTime::zcl_device_cb_(zb_bufid_t bufid) {

esphome/components/zigbee/zigbee_esp32.cpp

@@ -49,8 +49,7 @@ void ZigbeeComponent::factory_reset() {
 
 void ZigbeeComponent::esp_zigbee_alarm_bdb_commissioning(ezb_bdb_comm_mode_mask_t mode) {
   if (!esp_zigbee_lock_acquire(10 / portTICK_PERIOD_MS)) {
-    global_zigbee->set_timeout("zb_init", 100, [mode]() { ZigbeeComponent::esp_zigbee_alarm_bdb_commissioning(mode); });
-    App.wake_loop_threadsafe();
+    global_zigbee->set_timeout("zb_init", 10, [mode]() { ZigbeeComponent::esp_zigbee_alarm_bdb_commissioning(mode); });
     return;
   }
   if (ezb_bdb_start_top_level_commissioning(mode) != EZB_ERR_NONE) {
@@ -89,7 +88,6 @@ bool ZigbeeComponent::app_signal_handler(const ezb_app_signal_t *app_signal) {
         global_zigbee->set_timeout("zb_init", 1000, []() {
           ZigbeeComponent::esp_zigbee_alarm_bdb_commissioning(EZB_BDB_MODE_INITIALIZATION);
         });
-        App.wake_loop_threadsafe();
       }
     } break;
     case EZB_BDB_SIGNAL_STEERING: {
@@ -115,7 +113,6 @@ bool ZigbeeComponent::app_signal_handler(const ezb_app_signal_t *app_signal) {
             ZigbeeComponent::esp_zigbee_alarm_bdb_commissioning(EZB_BDB_MODE_NETWORK_STEERING);
           });
         }
-        App.wake_loop_threadsafe();
       }
     } break;
     case EZB_ZDO_SIGNAL_LEAVE: {

esphome/components/zigbee/zigbee_zephyr.cpp

@@ -1,10 +1,10 @@
 #include "zigbee_zephyr.h"
 #if defined(USE_ZIGBEE) && defined(USE_NRF52)
 #include "esphome/core/log.h"
-#include "esphome/core/application.h"
 #include <zephyr/settings/settings.h>
 #include <zephyr/storage/flash_map.h>
 #include "esphome/core/hal.h"
+#include "esphome/core/wake.h"
 
 extern "C" {
 #include <zboss_api.h>
@@ -120,7 +120,7 @@ void ZigbeeComponent::zcl_device_cb(zb_bufid_t bufid) {
   /* Set default response value. */
   p_device_cb_param->status = RET_OK;
 
-  App.wake_loop_threadsafe();
+  esphome::wake_loop_threadsafe();
 
   // endpoints are enumerated from 1
   if (global_zigbee->callbacks_.size() >= endpoint) {
@@ -138,7 +138,6 @@ void ZigbeeComponent::on_join_(bool factory_new) {
     ESP_LOGD(TAG, "Joined the network");
     this->join_cb_.call(factory_new);
   });
-  App.wake_loop_threadsafe();
 }
 
 void ZigbeeComponent::on_start_() {
@@ -146,7 +145,6 @@ void ZigbeeComponent::on_start_() {
     ESP_LOGD(TAG, "Started zigbee stack");
     this->start_cb_.call();
   });
-  App.wake_loop_threadsafe();
 }
 
 #ifdef USE_ZIGBEE_WIPE_ON_BOOT

esphome/config_validation.py

@@ -4,7 +4,6 @@ from __future__ import annotations
 
 from collections.abc import Callable
 from contextlib import contextmanager, suppress
-import copy
 from datetime import datetime
 from ipaddress import (
     AddressValueError,
@@ -420,37 +419,6 @@ class Required(vol.Required):
         self.visibility: Visibility | None = visibility
 
 
-def with_visibility(schema: Schema, visibility: Visibility, *keys: str) -> Schema:
-    """Return a copy of ``schema`` with the given ``keys`` re-marked at ``visibility``.
-
-    Lets a platform override the editor :class:`Visibility` of fields it
-    inherits from a shared schema builder — without that builder needing a
-    visibility parameter of its own. The canonical use is a ``template``
-    platform promoting the value metadata its user is expected to define
-    (``device_class``, ``unit_of_measurement``, …) onto the main form:
-
-        CONFIG_SCHEMA = cv.with_visibility(
-            sensor.sensor_schema(TemplateSensor),
-            cv.Visibility.UI,
-            CONF_DEVICE_CLASS, CONF_UNIT_OF_MEASUREMENT,
-        )
-
-    The original marker's key, default and validator are preserved; only the
-    visibility changes, and the input ``schema`` is left untouched. Raises if
-    a requested key is not present so typos fail at schema-build time.
-    """
-    wanted = {str(k) for k in keys}
-    overrides = {}
-    for marker, validator in schema.schema.items():
-        if str(marker) in wanted:
-            marker = copy.copy(marker)
-            marker.visibility = visibility
-            overrides[marker] = validator
-    if missing := wanted - {str(m) for m in overrides}:
-        raise ValueError(f"with_visibility: keys not in schema: {sorted(missing)}")
-    return schema.extend(overrides)
-
-
 class FinalExternalInvalid(Invalid):
     """Represents an invalid value in the final validation phase where the path should not be prepended."""
 

esphome/core/defines.h

@@ -181,7 +181,6 @@
 #define USE_SENSOR
 #define USE_SENSOR_FILTER
 #define USE_SERIAL_PROXY
-#define USE_SERIAL_PROXY_TAP
 #define USE_SETUP_PRIORITY_OVERRIDE
 #define USE_STATUS_LED
 #define USE_STATUS_SENSOR
@@ -245,6 +244,7 @@
 #define USE_RUNTIME_IMAGE_QOI
 #define USE_RUNTIME_STATS
 #define USE_OTA
+#define USE_OTA_DEFLATE
 #define USE_OTA_ENCRYPTION
 #define USE_OTA_ENCRYPTION_FROM_API
 #define USE_OTA_ENCRYPTION_PROVISIONED

esphome/espota2.py

@@ -11,6 +11,7 @@ import secrets
 import socket
 import time
 from typing import Any
+import zlib
 
 from esphome.core import EsphomeError
 from esphome.helpers import ProgressBar, resolve_ip_address
@@ -65,9 +66,15 @@ CLIENT_FEATURE_SUPPORTS_COMPRESSION = 0x01
 CLIENT_FEATURE_SUPPORTS_SHA256_AUTH = 0x02
 CLIENT_FEATURE_SUPPORTS_EXTENDED_PROTOCOL = 0x04
 CLIENT_FEATURE_SUPPORTS_NOISE = 0x08
+CLIENT_FEATURE_SUPPORTS_DEFLATE = 0x10
 SERVER_FEATURE_SUPPORTS_COMPRESSION = 0x01
 SERVER_FEATURE_SUPPORTS_PARTITION_ACCESS = 0x02
 SERVER_FEATURE_SUPPORTS_NOISE = 0x04
+# Binding once offered: the device then expects the image size and a deflate stream
+SERVER_FEATURE_SUPPORTS_DEFLATE = 0x08
+
+# Wire constant: the deflate bit promises a 4 KB window (OTA_INFLATE_WINDOW_SIZE)
+DEFLATE_WINDOW_BITS = 12
 
 NOISE_FRAME_INDICATOR = 0x01
 NOISE_HANDSHAKE_OK = 0x00
@@ -87,6 +94,9 @@ _SUPPORTED_OTA_TYPES: frozenset[int] = frozenset(
 )
 
 UPLOAD_BLOCK_SIZE = 8192
+# Sizes on the wire are 4 bytes MSB first
+SIZE_FIELD_BYTES = 4
+COMPRESS_LEVEL = 9
 UPLOAD_BUFFER_SIZE = UPLOAD_BLOCK_SIZE * 8
 
 # Flaky Wi-Fi links often drop the first OTA attempt, and the device may need time
@@ -551,6 +561,7 @@ def perform_ota(
         CLIENT_FEATURE_SUPPORTS_COMPRESSION
         | CLIENT_FEATURE_SUPPORTS_SHA256_AUTH
         | CLIENT_FEATURE_SUPPORTS_EXTENDED_PROTOCOL
+        | CLIENT_FEATURE_SUPPORTS_DEFLATE
     )
     if noise_psk:
         features_to_send |= CLIENT_FEATURE_SUPPORTS_NOISE
@@ -644,8 +655,16 @@ def perform_ota(
                 f"retry {flag_name}."
             )
 
-    if features & SERVER_FEATURE_SUPPORTS_COMPRESSION:
-        upload_contents = gzip.compress(file_contents, compresslevel=9)
+    deflate = bool(extended_proto and features & SERVER_FEATURE_SUPPORTS_DEFLATE)
+    if deflate:
+        # The device inflates while receiving through a small ring window
+        upload_contents = zlib.compress(
+            file_contents, COMPRESS_LEVEL, wbits=-DEFLATE_WINDOW_BITS
+        )
+        _LOGGER.info("Compressed to %s bytes (deflate)", len(upload_contents))
+    elif features & SERVER_FEATURE_SUPPORTS_COMPRESSION:
+        # The device stores the gzip file and inflates it when it reboots
+        upload_contents = gzip.compress(file_contents, compresslevel=COMPRESS_LEVEL)
         _LOGGER.info("Compressed to %s bytes", len(upload_contents))
     else:
         upload_contents = file_contents
@@ -704,22 +723,20 @@ def perform_ota(
         send_check(sock, ota_type, "ota type")
 
     upload_size = len(upload_contents)
-    upload_size_encoded = [
-        (upload_size >> 24) & 0xFF,
-        (upload_size >> 16) & 0xFF,
-        (upload_size >> 8) & 0xFF,
-        (upload_size >> 0) & 0xFF,
-    ]
     # The device erases flash between receiving the size and acking the
     # prepare, so this window shows the erase cost (near zero when the
     # device erases lazily during the upload)
     prepare_start = time.perf_counter()
-    send_check(sock, upload_size_encoded, "binary size")
+    send_check(sock, upload_size.to_bytes(SIZE_FIELD_BYTES, "big"), "binary size")
+    if deflate:
+        # Own frame: an encrypted session carries one field per frame
+        send_check(sock, file_size.to_bytes(SIZE_FIELD_BYTES, "big"), "image size")
     receive_exactly(sock, 1, "update prepare result", RESPONSE_UPDATE_PREPARE_OK)
     prepare_duration = time.perf_counter() - prepare_start
     _LOGGER.info("Preparing for upload took %.2f seconds", prepare_duration)
 
-    upload_md5 = hashlib.md5(upload_contents).hexdigest()
+    # The device hashes what it writes: the inflated image, else the received bytes
+    upload_md5 = hashlib.md5(file_contents if deflate else upload_contents).hexdigest()
     _LOGGER.debug("MD5 of upload is %s", upload_md5)
 
     send_check(sock, upload_md5, "file checksum")

requirements.txt

@@ -12,7 +12,7 @@ pyserial==3.5
 platformio==6.1.19
 esptool==5.4.0
 click==8.3.3
-aioesphomeapi==46.4.0
+aioesphomeapi==46.3.0
 aiohappyeyeballs==2.7.1  # Happy Eyeballs for requests downloads; already pulled in by aioesphomeapi
 zeroconf==0.151.3
 puremagic==2.2.0

script/api_protobuf/api_protobuf.py

@@ -131,12 +131,6 @@ def force_str(force: bool) -> str:
     return str(force).lower()
 
 
-def _encode_call(func: str, *args: str, force: bool = False) -> str:
-    """Emit one ProtoEncode call; every helper takes the cursor and returns it advanced."""
-    suffix = "_force" if force else ""
-    return f"pos = ProtoEncode::{func}{suffix}({', '.join(('pos', *args))});"
-
-
 class TypeInfo(ABC):
     """Base class for all type information."""
 
@@ -270,16 +264,14 @@ class TypeInfo(ABC):
     # write_raw_byte(tag) + raw encode instead of the full encode_* method,
     # eliminating the zero-check branch and encode_field_raw indirection.
     # {value} is replaced with the actual field expression.
-    RAW_ENCODE_MAP: dict[str, tuple[str, str]] = {
-        "encode_uint32": ("encode_varint_raw", "{value}"),
-        "encode_uint64": ("encode_varint_raw_64", "{value}"),
-        "encode_sint32": ("encode_varint_raw_short", "encode_zigzag32({value})"),
-        "encode_sint64": ("encode_varint_raw_64", "encode_zigzag64({value})"),
-        "encode_int64": ("encode_varint_raw_64", "static_cast<uint64_t>({value})"),
-        "encode_bool": ("write_raw_byte", "{value} ? 0x01 : 0x00"),
+    RAW_ENCODE_MAP: dict[str, str] = {
+        "encode_uint32": "ProtoEncode::encode_varint_raw(pos, {value});",
+        "encode_uint64": "ProtoEncode::encode_varint_raw_64(pos, {value});",
+        "encode_sint32": "ProtoEncode::encode_varint_raw_short(pos, encode_zigzag32({value}));",
+        "encode_sint64": "ProtoEncode::encode_varint_raw_64(pos, encode_zigzag64({value}));",
+        "encode_int64": "ProtoEncode::encode_varint_raw_64(pos, static_cast<uint64_t>({value}));",
+        "encode_bool": "ProtoEncode::write_raw_byte(pos, {value} ? 0x01 : 0x00);",
     }
-    # Fixed32 value expression for the shared tag+fixed32 writer; None for other wire types
-    fixed32_value_template: str | None = None
 
     def _encode_with_precomputed_tag(self, value_expr: str) -> str | None:
         """Try to emit a precomputed-tag encode for a field.
@@ -296,17 +288,12 @@ class TypeInfo(ABC):
             return None
         max_val = self.max_value
         # Only use RAW_ENCODE_MAP for forced fields or fields with max_value
-        raw = None
+        raw_expr = None
         if self.force or max_val is not None:
-            raw = self.RAW_ENCODE_MAP.get(self.encode_func)
-        if raw is None:
+            raw_expr = self.RAW_ENCODE_MAP.get(self.encode_func)
+        if raw_expr is None:
             return None
-        func, arg = raw
-        body = (
-            _encode_call("write_raw_byte", str(tag))
-            + "\n"
-            + _encode_call(func, arg.format(value=value_expr))
-        )
+        body = f"ProtoEncode::write_raw_byte(pos, {tag});\n{raw_expr.format(value=value_expr)}"
         if self.force:
             return body
         # Non-forced with max_value: inline zero-check + raw encode
@@ -327,43 +314,23 @@ class TypeInfo(ABC):
             return None
         # When max_len < 128, length varint is always 1 byte
         len_encode = (
-            _encode_call("write_raw_byte", f"static_cast<uint8_t>({len_expr})")
+            f"ProtoEncode::write_raw_byte(pos, static_cast<uint8_t>({len_expr}));"
             if max_len is not None and max_len < 128
-            else _encode_call("encode_varint_raw", len_expr)
+            else f"ProtoEncode::encode_varint_raw(pos, {len_expr});"
         )
-        return "\n".join(
-            (
-                _encode_call("write_raw_byte", str(tag)),
-                len_encode,
-                _encode_call("encode_raw", data_expr, len_expr),
-            )
-        )
-
-    def _encode_fixed32_with_precomputed_tag(self, value_expr: str) -> str | None:
-        """Single-byte tag fixed32 write, or None for multi-byte tags."""
-        tag = self.calculate_tag()
-        if tag >= 128:
-            return None
-        if self.force:
-            return _encode_call("write_tag_and_fixed32", str(tag), value_expr)
         return (
-            f"if (uint32_t raw = {value_expr}; raw != 0) [[likely]] {{\n"
-            f"  {_encode_call('write_tag_and_fixed32', str(tag), 'raw')}\n"
-            "}"
+            f"ProtoEncode::write_raw_byte(pos, {tag});\n"
+            f"{len_encode}\n"
+            f"ProtoEncode::encode_raw(pos, {data_expr}, {len_expr});"
         )
 
     @property
     def encode_content(self) -> str:
-        value = f"this->{self.field_name}"
-        if result := self._encode_with_precomputed_tag(value):
+        if result := self._encode_with_precomputed_tag(f"this->{self.field_name}"):
             return result
-        if self.fixed32_value_template is not None and (
-            result := self._encode_fixed32_with_precomputed_tag(
-                self.fixed32_value_template.format(value=value)
-            )
-        ):
-            return result
-        return _encode_call(self.encode_func, str(self.number), value, force=self.force)
+        if self.force:
+            return f"ProtoEncode::{self.encode_func}(pos, {self.number}, this->{self.field_name}, true);"
+        return f"ProtoEncode::{self.encode_func}(pos, {self.number}, this->{self.field_name});"
 
     encode_func = None
 
@@ -668,8 +635,6 @@ class FloatType(FixedSizeTypeMixin, TypeInfo):
     encode_func = "encode_float"
     wire_type = WireType.FIXED32  # Uses wire type 5
 
-    fixed32_value_template = "float_to_raw({value})"
-
     def dump(self, name: str) -> str:
         o = f'snprintf(buffer, sizeof(buffer), "%g", {name});\n'
         o += "out.append(buffer);"
@@ -732,11 +697,11 @@ class UInt64Type(VarintTypeMixin, TypeInfo):
         return self._get_simple_size_calculation(name, force, "uint64")
 
     @property
-    def RAW_ENCODE_MAP(self) -> dict[str, tuple[str, str]]:  # noqa: N802
+    def RAW_ENCODE_MAP(self) -> dict[str, str]:  # noqa: N802
         if self.mac_address:
             return {
                 **TypeInfo.RAW_ENCODE_MAP,
-                "encode_uint64": ("encode_varint_raw_48bit", "{value}"),
+                "encode_uint64": "ProtoEncode::encode_varint_raw_48bit(pos, {value});",
             }
         return TypeInfo.RAW_ENCODE_MAP
 
@@ -804,7 +769,15 @@ class Fixed32Type(FixedSizeTypeMixin, TypeInfo):
         o += "out.append(buffer);"
         return o
 
-    fixed32_value_template = "{value}"
+    @property
+    def encode_content(self) -> str:
+        tag = self.calculate_tag()
+        if self.force and tag < 128:
+            # Emit combined tag+value write: precomputed tag + direct memcpy
+            return f"ProtoEncode::write_tag_and_fixed32(pos, {tag}, this->{self.field_name});"
+        if self.force:
+            return f"ProtoEncode::{self.encode_func}(pos, {self.number}, this->{self.field_name}, true);"
+        return f"ProtoEncode::{self.encode_func}(pos, {self.number}, this->{self.field_name});"
 
     def get_size_calculation(self, name: str, force: bool = False) -> str:
         field_id_size = self.calculate_field_id_size()
@@ -878,12 +851,9 @@ class StringType(TypeInfo):
             f"this->{self.field_name}_ref_.size()",
         ):
             return result
-        return _encode_call(
-            "encode_string",
-            str(self.number),
-            f"this->{self.field_name}_ref_",
-            force=self.force,
-        )
+        if self.force:
+            return f"ProtoEncode::encode_string(pos, {self.number}, this->{self.field_name}_ref_, true);"
+        return f"ProtoEncode::encode_string(pos, {self.number}, this->{self.field_name}_ref_);"
 
     def dump(self, name):
         # If name is 'it', this is a repeated field element - always use string
@@ -981,9 +951,7 @@ class MessageType(TypeInfo):
     @property
     def encode_content(self) -> str:
         # Sub-message encoding needs buffer for backpatch/sync
-        return _encode_call(
-            self.encode_func, "buffer", str(self.number), f"this->{self.field_name}"
-        )
+        return f"ProtoEncode::{self.encode_func}(pos, buffer, {self.number}, this->{self.field_name});"
 
     @property
     def decode_length(self) -> str:
@@ -1090,13 +1058,9 @@ class BytesType(TypeInfo):
             f"this->{self.field_name}_ptr_", f"this->{self.field_name}_len_"
         ):
             return result
-        return _encode_call(
-            "encode_bytes",
-            str(self.number),
-            f"this->{self.field_name}_ptr_",
-            f"this->{self.field_name}_len_",
-            force=self.force,
-        )
+        if self.force:
+            return f"ProtoEncode::encode_bytes(pos, {self.number}, this->{self.field_name}_ptr_, this->{self.field_name}_len_, true);"
+        return f"ProtoEncode::encode_bytes(pos, {self.number}, this->{self.field_name}_ptr_, this->{self.field_name}_len_);"
 
     def dump(self, name: str) -> str:
         ptr_dump = f"format_hex_pretty(this->{self.field_name}_ptr_, this->{self.field_name}_len_)"
@@ -1206,13 +1170,9 @@ class PointerToBytesBufferType(PointerToBufferTypeBase):
             f"this->{self.field_name}", f"this->{self.field_name}_len"
         ):
             return result
-        return _encode_call(
-            "encode_bytes",
-            str(self.number),
-            f"this->{self.field_name}",
-            f"this->{self.field_name}_len",
-            force=self.force,
-        )
+        if self.force:
+            return f"ProtoEncode::encode_bytes(pos, {self.number}, this->{self.field_name}, this->{self.field_name}_len, true);"
+        return f"ProtoEncode::encode_bytes(pos, {self.number}, this->{self.field_name}, this->{self.field_name}_len);"
 
     @property
     def decode_length_content(self) -> str | None:
@@ -1264,19 +1224,16 @@ class PointerToStringBufferType(PointerToBufferTypeBase):
         if max_len is not None and max_len < 128 and self.force:
             tag = self.calculate_tag()
             if tag < 128:
-                return _encode_call(
-                    "encode_short_string_force", str(tag), f"this->{self.field_name}"
-                )
+                return f"ProtoEncode::encode_short_string_force(pos, {tag}, this->{self.field_name});"
         if result := self._encode_bytes_with_precomputed_tag(
             f"this->{self.field_name}.c_str()",
             f"this->{self.field_name}.size()",
         ):
             return result
-        return _encode_call(
-            "encode_string",
-            str(self.number),
-            f"this->{self.field_name}",
-            force=self.force,
+        if self.force:
+            return f"ProtoEncode::encode_string(pos, {self.number}, this->{self.field_name}, true);"
+        return (
+            f"ProtoEncode::encode_string(pos, {self.number}, this->{self.field_name});"
         )
 
     @property
@@ -1464,13 +1421,9 @@ class FixedArrayBytesType(TypeInfo):
             f"this->{self.field_name}", f"this->{self.field_name}_len", max_len=max_len
         ):
             return result
-        return _encode_call(
-            "encode_bytes",
-            str(self.number),
-            f"this->{self.field_name}",
-            f"this->{self.field_name}_len",
-            force=self.force,
-        )
+        if self.force:
+            return f"ProtoEncode::encode_bytes(pos, {self.number}, this->{self.field_name}, this->{self.field_name}_len, true);"
+        return f"ProtoEncode::encode_bytes(pos, {self.number}, this->{self.field_name}, this->{self.field_name}_len);"
 
     def dump(self, name: str) -> str:
         return f"out.append(format_hex_pretty({name}, {name}_len));"
@@ -1567,9 +1520,9 @@ class EnumType(VarintTypeMixin, TypeInfo):
     @property
     def encode_content(self) -> str:
         value_expr = f"static_cast<uint32_t>(this->{self.field_name})"
-        return _encode_call(
-            self.encode_func, str(self.number), value_expr, force=self.force
-        )
+        if self.force:
+            return f"ProtoEncode::{self.encode_func}(pos, {self.number}, {value_expr}, true);"
+        return f"ProtoEncode::{self.encode_func}(pos, {self.number}, {value_expr});"
 
     def dump(self, name: str) -> str:
         return f"out.append_p(proto_enum_to_string<{self.cpp_type}>({name}));"
@@ -1748,9 +1701,9 @@ def _generate_inline_encode_block(
 
     lines = []
     lines.append(f"auto &sub_msg = {element};")
-    lines.append(_encode_call("write_raw_byte", str(tag)))
+    lines.append(f"ProtoEncode::write_raw_byte(pos, {tag});")
     lines.append("uint8_t *len_pos = pos;")
-    lines.append(_encode_call("reserve_byte"))
+    lines.append("ProtoEncode::reserve_byte(pos);")
 
     # Generate inline field encoding for each sub-message field
     for field in sub_desc.field:
@@ -1822,22 +1775,17 @@ class FixedArrayRepeatedType(TypeInfo):
     def _encode_element(self, element: str) -> str:
         """Helper to generate encode statement for a single element."""
         if isinstance(self._ti, EnumType):
-            return _encode_call(
-                self._ti.encode_func,
-                str(self.number),
-                f"static_cast<uint32_t>({element})",
-                force=True,
-            )
+            return f"ProtoEncode::{self._ti.encode_func}(pos, {self.number}, static_cast<uint32_t>({element}), true);"
         # Repeated message elements use encode_sub_message (force=true is default)
         if isinstance(self._ti, MessageType):
             if _is_inline_encode(self._ti.cpp_type):
                 return _generate_inline_encode_block(
                     self.number, self._ti.cpp_type, element
                 )
-            return _encode_call(
-                "encode_sub_message", "buffer", str(self.number), element
-            )
-        return _encode_call(self._ti.encode_func, str(self.number), element, force=True)
+            return f"ProtoEncode::encode_sub_message(pos, buffer, {self.number}, {element});"
+        return (
+            f"ProtoEncode::{self._ti.encode_func}(pos, {self.number}, {element}, true);"
+        )
 
     @property
     def cpp_type(self) -> str:
@@ -2189,18 +2137,13 @@ class RepeatedTypeInfo(TypeInfo):
     def _encode_element_call(self, element: str) -> str:
         """Helper to generate encode call for a single element."""
         if isinstance(self._ti, EnumType):
-            return _encode_call(
-                self._ti.encode_func,
-                str(self.number),
-                f"static_cast<uint32_t>({element})",
-                force=True,
-            )
+            return f"ProtoEncode::{self._ti.encode_func}(pos, {self.number}, static_cast<uint32_t>({element}), true);"
         # Repeated message elements use encode_sub_message (force=true is default)
         if isinstance(self._ti, MessageType):
-            return _encode_call(
-                "encode_sub_message", "buffer", str(self.number), element
-            )
-        return _encode_call(self._ti.encode_func, str(self.number), element, force=True)
+            return f"ProtoEncode::encode_sub_message(pos, buffer, {self.number}, {element});"
+        return (
+            f"ProtoEncode::{self._ti.encode_func}(pos, {self.number}, {element}, true);"
+        )
 
     @property
     def encode_content(self) -> str:
@@ -2209,7 +2152,7 @@ class RepeatedTypeInfo(TypeInfo):
             # Special handling for const char* elements (when container_no_template contains "const char")
             if "const char" in self._container_no_template:
                 o = f"for (const char *it : *this->{self.field_name}) {{\n"
-                o += f"  {_encode_call(self._ti.encode_func, str(self.number), 'it', 'strlen(it)', force=True)}\n"
+                o += f"  ProtoEncode::{self._ti.encode_func}(pos, {self.number}, it, strlen(it), true);\n"
             else:
                 o = f"for (const auto &it : *this->{self.field_name}) {{\n"
                 o += f"  {self._encode_element_call('it')}\n"
@@ -2841,36 +2784,28 @@ def build_message_type(
             )
             for line in encode
         ]
-        o = f"{speed_attr}uint8_t *{desc.name}::encode_msg(const void *self, ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) {{\n"
-        o += f"  const auto &msg = *static_cast<const {desc.name} *>(self);\n"
+        o = f"{speed_attr}uint8_t *{desc.name}::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) const {{\n"
         o += "  uint8_t *__restrict__ pos = buffer.get_pos();\n"
-        o += indent("\n".join(encode_debug)).replace("this->", "msg.") + "\n"
+        o += indent("\n".join(encode_debug)) + "\n"
         o += "  return pos;\n"
         o += "}\n"
         cpp += o
-        public_content.append(
-            "static uint8_t *encode_msg(const void *self, ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM);"
-        )
-        public_content.append(
-            "uint8_t *encode(ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) const {\n"
-            "  return encode_msg(this, buffer PROTO_ENCODE_DEBUG_ARG);\n"
-            "}"
+        prot = (
+            "uint8_t *encode(ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) const;"
         )
+        public_content.append(prot)
     # If no fields to encode or message doesn't need encoding, the default implementation in ProtoMessage will be used
 
     # Add calculate_size method only if this message needs encoding and has fields
     if needs_encode and size_calc and not is_inline_only:
-        o = f"{speed_attr}uint32_t {desc.name}::calc_size_msg(const void *self) {{\n"
-        o += f"  const auto &msg = *static_cast<const {desc.name} *>(self);\n"
+        o = f"{speed_attr}uint32_t {desc.name}::calculate_size() const {{\n"
         o += "  uint32_t size = 0;\n"
-        o += indent("\n".join(size_calc)).replace("this->", "msg.") + "\n"
+        o += indent("\n".join(size_calc)) + "\n"
         o += "  return size;\n"
         o += "}\n"
         cpp += o
-        public_content.append("static uint32_t calc_size_msg(const void *self);")
-        public_content.append(
-            "uint32_t calculate_size() const { return calc_size_msg(this); }"
-        )
+        prot = "uint32_t calculate_size() const;"
+        public_content.append(prot)
     # If no fields to calculate size for or message doesn't need encoding, the default implementation in ProtoMessage will be used
 
     # dump_to method declaration in header

script/ci-custom.py

@@ -823,6 +823,8 @@ def lint_relative_py_import(fname: Path, line, col, content):
         # neither can live in a C++ namespace.
         "esphome/components/esp32_hosted/esp_now_hosted.cpp",
         "esphome/components/esp32_hosted/esp_now_hosted_rpc.h",
+        # C header shared with the vendored decoder
+        "esphome/components/esphome/ota/ota_esphome_inflate.h",
     ],
 )
 def lint_namespace(fname: Path, content: str) -> str | None:

script/git-hooks/post-checkout

@@ -1,49 +1,27 @@
 #!/bin/sh
 # Prepare the dev environment for a new checkout or worktree.
 #
-# Installed into the git hooks directory by script/setup.py. Deliberately tiny
-# and self-contained: it stays valid on branches where the setup script does not
-# exist, and simply does nothing there.
+# Installed into the git hooks directory by script/setup. Deliberately tiny and
+# self-contained: it stays valid on branches where script/setup does not exist,
+# and simply does nothing there.
 
 # $3 is 1 for a branch checkout, 0 for a file checkout.
 [ "$3" = "1" ] || exit 0
 
 top=$(git rev-parse --show-toplevel 2>/dev/null) || exit 0
 
-# This also runs on ordinary branch switches, where there is nothing to do. Both
-# layouts are checked because git for Windows runs hooks under its own bundled
-# shell, where the environment lives in venv/Scripts rather than venv/bin.
+# This also runs on ordinary branch switches, where there is nothing to do.
 [ -x "$top/venv/bin/python" ] && exit 0
-[ -f "$top/venv/Scripts/python.exe" ] && exit 0
-
-# Branches from before the setup script moved to Python carry only the shell
-# entry point, so whichever one the checked out branch has is used.
-py=
-if [ -f "$top/script/setup.py" ]; then
-  # The interpreter goes by different names across platforms, and on Windows
-  # "python3" is often a stub that opens the app store instead of running
-  # anything, so each candidate is tried before it is used. Doing nothing is the
-  # right outcome when none of them work.
-  for candidate in "python3" "python" "py -3"; do
-    # Unquoted on purpose: the launcher candidate is a command plus a flag.
-    if $candidate -c "" >/dev/null 2>&1; then
-      py=$candidate
-      break
-    fi
-  done
-  [ -n "$py" ] || exit 0
-elif ! [ -x "$top/script/setup" ]; then
-  exit 0
-fi
+[ -x "$top/script/setup" ] || exit 0
 
 # Every worktree shares the hooks directory of the checkout it was created
-# from, and the setup script run below is the one from whichever branch was just
+# from, and the script/setup run below is the one from whichever branch was just
 # checked out. Older branches install their own pre-commit hook without checking
 # for a worktree: that moves the shared hook aside as pre-commit.legacy and
 # replaces it with one tied to this worktree's virtual environment, so commits
 # break in every checkout. To rule that out, the hooks directory is copied
-# before the setup script runs and put back exactly as it was afterwards,
-# including removing any file the setup script added.
+# before script/setup runs and put back exactly as it was afterwards, including
+# removing any file script/setup added.
 hooks=$(git rev-parse --path-format=absolute --git-path hooks 2>/dev/null) || exit 0
 snap=$(mktemp -d "$hooks/.post-checkout.XXXXXX") || exit 0
 cp -p "$hooks"/* "$snap"/ 2>/dev/null
@@ -51,13 +29,7 @@ cp -p "$hooks"/* "$snap"/ 2>/dev/null
 # Clear VIRTUAL_ENV so a checkout made from a shell with an environment already
 # activated still gets its own, rather than having the active one repointed at
 # this working tree.
-unset VIRTUAL_ENV
-if [ -n "$py" ]; then
-  # Unquoted on purpose, as above.
-  $py "$top/script/setup.py"
-else
-  "$top/script/setup"
-fi
+env -u VIRTUAL_ENV "$top/script/setup"
 status=$?
 
 for f in "$hooks"/*; do

script/setup

@@ -1,7 +1,71 @@
 #!/usr/bin/env bash
-# Set up ESPHome dev environment.
-#
-# The work is done by setup.py, which script/setup.bat also runs, so the Unix
-# and Windows entry points share one implementation.
+# Set up ESPHome dev environment
 
-exec python3 "$(dirname "$0")/setup.py" "$@"
+set -e
+
+cd "$(dirname "$0")/.."
+if [ -n "$VIRTUAL_ENV" ]; then
+  # A virtual environment is already active (e.g. the devcontainer's pre-provisioned
+  # esphome-venv). Install into it rather than creating a ./venv in the workspace.
+  venv_state=active
+elif [ -x venv/bin/python ]; then
+  # Reuse the environment from an earlier run, so this script can be run again
+  # at any time to pick up dependency changes.
+  venv_state=reused
+  source venv/bin/activate
+else
+  venv_state=created
+  # --clear replaces a partial environment left behind by an interrupted run.
+  if [ -x "$(command -v uv)" ]; then
+    uv venv --clear --seed venv
+  else
+    python3 -m venv --clear venv
+  fi
+  source venv/bin/activate
+fi
+
+if ! [ -x "$(command -v uv)" ]; then
+  python3 -m pip install uv
+fi
+
+uv pip install setuptools wheel
+uv pip install -e ".[dev,test]" --config-settings editable_mode=compat
+
+# A worktree shares one git hooks directory with the main checkout it was
+# created from, so hooks are installed from the main checkout only. Installing
+# from a worktree would point the shared hook at that worktree's virtual
+# environment, breaking it for everyone once the worktree is removed.
+git_dir="$(git rev-parse --absolute-git-dir 2>/dev/null || true)"
+common_dir="$(git rev-parse --path-format=absolute --git-common-dir 2>/dev/null || true)"
+if [ -n "$common_dir" ] && [ "$git_dir" = "$common_dir" ]; then
+  # --overwrite replaces any hook already in place. Without it, prek finds a
+  # previously installed pre-commit hook, moves it aside to
+  # .git/hooks/pre-commit.legacy and keeps calling it, so every commit would
+  # run both tools.
+  prek install --overwrite
+
+  # Prepares the virtual environment for new checkouts and worktrees. Installed
+  # once here, it covers every worktree created from this checkout.
+  if [ -d "$common_dir/hooks" ]; then
+    cp script/git-hooks/post-checkout "$common_dir/hooks/post-checkout"
+    chmod +x "$common_dir/hooks/post-checkout"
+  fi
+fi
+
+mkdir -p .temp
+
+echo
+echo
+case "$venv_state" in
+  created)
+    echo "Virtual environment created at ./venv. Run 'source venv/bin/activate' to use it."
+    ;;
+  reused)
+    echo "Dependencies updated in the existing ./venv. Run 'source venv/bin/activate' to use it."
+    ;;
+  active)
+    echo "Dependencies installed into the active virtual environment:"
+    echo "  $VIRTUAL_ENV"
+    echo "It is already active in this shell, so no 'source venv/bin/activate' is needed."
+    ;;
+esac

script/setup.bat

@@ -1 +1,28 @@
-@python "%~dp0setup.py" %*
+@echo off
+
+if defined VIRTUAL_ENV goto :install
+
+echo Starting the Virtual Environment
+python -m venv venv
+call venv/Scripts/activate
+echo Running the Virtual Environment
+
+:install
+
+echo Installing required packages...
+
+python.exe -m pip install --upgrade pip
+
+pip3 install -r requirements.txt -r requirements_test.txt -r requirements_dev.txt
+pip3 install setuptools wheel
+pip3 install -e ".[dev,test]" --config-settings editable_mode=compat
+
+rem --overwrite replaces any hook already in place. Without it, prek finds a
+rem previously installed pre-commit hook, moves it aside to
+rem .git/hooks/pre-commit.legacy and keeps calling it, so every commit would
+rem run both tools.
+prek install --overwrite
+
+echo .
+echo .
+echo Virtual environment created. Run 'venv/Scripts/activate' to use it.

script/setup.py

@@ -1,222 +0,0 @@
-#!/usr/bin/env python3
-"""Set up the ESPHome development environment.
-
-Shared implementation behind script/setup and script/setup.bat, so the Unix and
-Windows entry points cannot drift apart. Uses only the standard library: it runs
-before any dependency has been installed.
-"""
-
-import os
-from pathlib import Path
-import shutil
-import subprocess
-import sys
-import sysconfig
-
-MIN_PYTHON = (3, 12)
-
-ROOT = Path(__file__).resolve().parent.parent
-DEFAULT_VENV = ROOT / "venv"
-POST_CHECKOUT_HOOK = ROOT / "script" / "git-hooks" / "post-checkout"
-
-# State of the environment the dependencies end up in, used for the closing
-# message.
-VENV_ACTIVE = "active"
-VENV_REUSED = "reused"
-VENV_CREATED = "created"
-
-
-def bin_dir(venv: Path) -> Path:
-    """Return the directory holding a virtual environment's executables.
-
-    The "venv" scheme resolves to bin on Unix and Scripts on Windows, so the
-    layout does not have to be hardcoded here.
-    """
-    base = str(venv)
-    return Path(
-        sysconfig.get_path("scripts", "venv", vars={"base": base, "platbase": base})
-    )
-
-
-def venv_python(venv: Path) -> Path:
-    """Return the path to a virtual environment's interpreter."""
-    name = "python.exe" if os.name == "nt" else "python"
-    return bin_dir(venv) / name
-
-
-def run(command: list[str], env: dict[str, str] | None = None) -> None:
-    """Run a command, aborting the whole script if it fails."""
-    print(f"+ {' '.join(command)}", flush=True)
-    result = subprocess.run(command, cwd=ROOT, env=env, check=False)
-    if result.returncode != 0:
-        # Some tools fail without printing anything, so name the step that broke.
-        print(
-            f"Failed with exit code {result.returncode}: {command[0]}", file=sys.stderr
-        )
-        raise SystemExit(result.returncode)
-
-
-def git_output(*args: str) -> str:
-    """Return the trimmed output of a git command, or "" if it cannot be run."""
-    try:
-        result = subprocess.run(
-            ["git", *args], cwd=ROOT, capture_output=True, text=True, check=False
-        )
-    except OSError:
-        # Git is not required to install the dependencies, only to install hooks.
-        return ""
-    if result.returncode != 0:
-        return ""
-    return result.stdout.strip()
-
-
-def create_venv(venv: Path) -> None:
-    """Create a virtual environment, replacing anything already at the path."""
-    # --clear replaces a partial environment left behind by an interrupted run.
-    if (uv := shutil.which("uv")) is not None:
-        run([uv, "venv", "--clear", "--seed", str(venv)])
-    else:
-        run([sys.executable, "-m", "venv", "--clear", str(venv)])
-
-
-def venv_environment(venv: Path) -> dict[str, str]:
-    """Return the environment child processes need to target a virtual env.
-
-    Equivalent to sourcing the environment's activate script: tools such as uv
-    and prek pick the environment up from VIRTUAL_ENV and PATH.
-    """
-    env = dict(os.environ)
-    env["VIRTUAL_ENV"] = str(venv)
-    env.pop("PYTHONHOME", None)
-    path = str(bin_dir(venv))
-    # An empty entry would be appended if PATH is unset, and on Unix that means
-    # the working directory is searched for executables.
-    if existing := env.get("PATH"):
-        path = os.pathsep.join([path, existing])
-    env["PATH"] = path
-    return env
-
-
-def find_uv(venv: Path, env: dict[str, str]) -> str:
-    """Return the path to uv, installing it into the environment if needed."""
-    if (uv := shutil.which("uv", path=env["PATH"])) is not None:
-        return uv
-    run([str(venv_python(venv)), "-m", "pip", "install", "uv"], env=env)
-    if (uv := shutil.which("uv", path=env["PATH"])) is not None:
-        return uv
-    raise SystemExit("uv could not be installed, aborting.")
-
-
-def install_dependencies(venv: Path, env: dict[str, str]) -> None:
-    """Install ESPHome and its development dependencies into the environment."""
-    uv = find_uv(venv, env)
-    run([uv, "pip", "install", "setuptools", "wheel"], env=env)
-    # The dev and test extras pull in requirements_dev.txt and
-    # requirements_test.txt, and the package itself pulls in requirements.txt,
-    # so this single install covers every requirements file.
-    run(
-        [
-            uv,
-            "pip",
-            "install",
-            "-e",
-            ".[dev,test]",
-            "--config-settings",
-            "editable_mode=compat",
-        ],
-        env=env,
-    )
-
-
-def install_git_hooks(env: dict[str, str]) -> None:
-    """Install the git hooks, but only when run from the main checkout.
-
-    A worktree shares one git hooks directory with the main checkout it was
-    created from. Installing from a worktree would point the shared hook at that
-    worktree's virtual environment, breaking it for everyone once the worktree is
-    removed.
-    """
-    git_dir = git_output("rev-parse", "--absolute-git-dir")
-    common_dir = git_output("rev-parse", "--path-format=absolute", "--git-common-dir")
-    if not git_dir or not common_dir or Path(git_dir) != Path(common_dir):
-        return
-
-    prek = shutil.which("prek", path=env["PATH"])
-    if prek is None:
-        raise SystemExit("prek was not installed, aborting.")
-    # --overwrite replaces any hook already in place. Without it, prek finds a
-    # previously installed pre-commit hook, moves it aside to
-    # .git/hooks/pre-commit.legacy and keeps calling it, so every commit would
-    # run both tools.
-    run([prek, "install", "--overwrite"], env=env)
-
-    # Prepares the virtual environment for new checkouts and worktrees. Installed
-    # once here, it covers every worktree created from this checkout.
-    hooks_dir = Path(common_dir) / "hooks"
-    if hooks_dir.is_dir():
-        installed = hooks_dir / "post-checkout"
-        shutil.copyfile(POST_CHECKOUT_HOOK, installed)
-        installed.chmod(0o755)
-
-
-def activate_hint() -> str:
-    """Return the command that activates the environment this script creates."""
-    activate = bin_dir(DEFAULT_VENV).relative_to(ROOT) / "activate"
-    if os.name == "nt":
-        return str(activate)
-    return f"source {activate.as_posix()}"
-
-
-def report(state: str, venv: Path) -> None:
-    """Print the closing message for the environment that was set up."""
-    location = f"./{DEFAULT_VENV.name}"
-    print()
-    print()
-    if state == VENV_ACTIVE:
-        print("Dependencies installed into the active virtual environment:")
-        print(f"  {venv}")
-        print(
-            f"It is already active in this shell, so no '{activate_hint()}' is needed."
-        )
-    elif state == VENV_REUSED:
-        print(
-            f"Dependencies updated in the existing {location}. "
-            f"Run '{activate_hint()}' to use it."
-        )
-    else:
-        print(
-            f"Virtual environment created at {location}. "
-            f"Run '{activate_hint()}' to use it."
-        )
-
-
-def main() -> None:
-    """Set up the development environment."""
-    if sys.version_info < MIN_PYTHON:
-        raise SystemExit(
-            f"ESPHome needs Python {MIN_PYTHON[0]}.{MIN_PYTHON[1]} or newer, "
-            f"but this is Python {sys.version.split()[0]}."
-        )
-
-    # A virtual environment that is already active (for example the
-    # devcontainer's pre-provisioned esphome-venv) is installed into rather than
-    # creating a ./venv in the workspace.
-    if active := os.environ.get("VIRTUAL_ENV"):
-        state, venv = VENV_ACTIVE, Path(active)
-    elif venv_python(DEFAULT_VENV).is_file():
-        # Reuse the environment from an earlier run, so this script can be run
-        # again at any time to pick up dependency changes.
-        state, venv = VENV_REUSED, DEFAULT_VENV
-    else:
-        state, venv = VENV_CREATED, DEFAULT_VENV
-        create_venv(venv)
-
-    env = venv_environment(venv)
-    install_dependencies(venv, env)
-    install_git_hooks(env)
-    (ROOT / ".temp").mkdir(exist_ok=True)
-    report(state, venv)
-
-
-if __name__ == "__main__":
-    main()

sdkconfig.defaults

@@ -17,8 +17,6 @@ CONFIG_ESP_TASK_WDT_INIT=y
 CONFIG_ESP_TASK_WDT_PANIC=y
 CONFIG_ESP_TASK_WDT_CHECK_IDLE_TASK_CPU0=n
 CONFIG_ESP_TASK_WDT_CHECK_IDLE_TASK_CPU1=n
-CONFIG_FREERTOS_USE_TICKLESS_IDLE=y
-CONFIG_PM_ENABLE=y
 
 # esp32_ble
 CONFIG_BT_ENABLED=y

tests/benchmarks/stubs/esphome/components/serial_proxy/serial_proxy.h

@@ -40,9 +40,6 @@ class SerialProxy {
     return SerialProxyResult::SERIAL_PROXY_RESULT_OK;
   }
   void write_from_client(api::APIConnection *api_connection, const uint8_t *data, size_t len) {}
-  SerialProxyResult set_mode_from_client(api::APIConnection *api_connection, api::enums::SerialProxyMode mode) {
-    return SerialProxyResult::SERIAL_PROXY_RESULT_OK;
-  }
   SerialProxyResult set_modem_pins(api::APIConnection *api_connection, uint32_t line_states) {
     return SerialProxyResult::SERIAL_PROXY_RESULT_OK;
   }

tests/component_tests/sendspin/config/device_info_default.yaml

@@ -1,12 +0,0 @@
-esphome:
-  name: test
-
-esp32:
-  board: esp32dev
-  framework:
-    type: esp-idf
-
-wifi:
-  ap:
-
-sendspin:

tests/component_tests/sendspin/config/device_info_explicit.yaml

@@ -1,18 +0,0 @@
-esphome:
-  name: test
-  project:
-    name: project_manufacturer.project_model
-    version: 9.9.9
-
-esp32:
-  board: esp32dev
-  framework:
-    type: esp-idf
-
-wifi:
-  ap:
-
-sendspin:
-  manufacturer: Explicit Manufacturer
-  model: Explicit Model
-  firmware_version: 1.2.3

tests/component_tests/sendspin/config/device_info_project.yaml

@@ -1,15 +0,0 @@
-esphome:
-  name: test
-  project:
-    name: project_manufacturer.project_model
-    version: 9.9.9
-
-esp32:
-  board: esp32dev
-  framework:
-    type: esp-idf
-
-wifi:
-  ap:
-
-sendspin:

tests/component_tests/sendspin/test_device_info.py

@@ -1,83 +0,0 @@
-"""Tests for the device information the sendspin hub reports to the server."""
-
-from __future__ import annotations
-
-from collections.abc import Callable
-from pathlib import Path
-
-import pytest
-
-from esphome import config_validation as cv
-from esphome.components.sendspin import (
-    CONF_FIRMWARE_VERSION,
-    CONF_MANUFACTURER,
-    CONFIG_SCHEMA,
-)
-from esphome.const import CONF_MODEL, PlatformFramework
-from tests.component_tests.types import SetCoreConfigCallable
-
-
-def test_explicit_device_info_wins_over_project(
-    generate_main: Callable[[str | Path], str],
-    component_config_path: Callable[[str], Path],
-) -> None:
-    """Configured values take precedence over the project information."""
-    main_cpp = generate_main(component_config_path("device_info_explicit.yaml"))
-
-    assert 'set_manufacturer("Explicit Manufacturer")' in main_cpp
-    assert 'set_model("Explicit Model")' in main_cpp
-    assert 'set_firmware_version("1.2.3")' in main_cpp
-
-
-def test_project_supplies_device_info(
-    generate_main: Callable[[str | Path], str],
-    component_config_path: Callable[[str], Path],
-) -> None:
-    """Without configured values, the project name splits into manufacturer and model."""
-    main_cpp = generate_main(component_config_path("device_info_project.yaml"))
-
-    assert 'set_manufacturer("project_manufacturer")' in main_cpp
-    assert 'set_model("project_model")' in main_cpp
-    assert 'set_firmware_version("9.9.9")' in main_cpp
-
-
-def test_no_device_info_leaves_hub_defaults(
-    generate_main: Callable[[str | Path], str],
-    component_config_path: Callable[[str], Path],
-) -> None:
-    """With neither source, nothing is emitted and the hub keeps its own defaults."""
-    main_cpp = generate_main(component_config_path("device_info_default.yaml"))
-
-    assert "set_manufacturer(" not in main_cpp
-    assert "set_model(" not in main_cpp
-    assert "set_firmware_version(" not in main_cpp
-
-
-@pytest.mark.parametrize(
-    "conf_key", [CONF_MANUFACTURER, CONF_MODEL, CONF_FIRMWARE_VERSION]
-)
-def test_empty_device_info_rejected(
-    set_core_config: SetCoreConfigCallable, conf_key: str
-) -> None:
-    """An empty string would be sent to the server as an empty value, so it is not accepted."""
-    set_core_config(PlatformFramework.ESP32_IDF)
-
-    with pytest.raises(cv.Invalid):
-        CONFIG_SCHEMA({conf_key: ""})
-
-
-@pytest.mark.parametrize(
-    "conf_key", [CONF_MANUFACTURER, CONF_MODEL, CONF_FIRMWARE_VERSION]
-)
-def test_device_info_capped_at_127_bytes(
-    set_core_config: SetCoreConfigCallable, conf_key: str
-) -> None:
-    """The cap is in bytes so the protobuf length prefix stays a single byte."""
-    set_core_config(PlatformFramework.ESP32_IDF)
-
-    CONFIG_SCHEMA({conf_key: "a" * 127})
-    with pytest.raises(cv.Invalid):
-        CONFIG_SCHEMA({conf_key: "a" * 128})
-    # 64 two-byte characters is 128 bytes.
-    with pytest.raises(cv.Invalid):
-        CONFIG_SCHEMA({conf_key: "é" * 64})

tests/component_tests/sendspin/test_media_source.py

@@ -1,90 +0,0 @@
-"""Validation tests for the sendspin media_source platform.
-
-These cover the codec preference list, whose rejection branches a compile test
-cannot reach: a `test*.yaml` can only assert that a configuration is accepted.
-"""
-
-from typing import Any
-
-import pytest
-
-from esphome import config_validation as cv
-from esphome.components.sendspin import CONF_CODECS, _get_data
-from esphome.components.sendspin.media_source import CONFIG_SCHEMA
-from esphome.const import PlatformFramework
-from esphome.types import ConfigType
-from tests.component_tests.types import SetCoreConfigCallable
-
-
-def _media_source_config(**overrides: Any) -> ConfigType:
-    """Build a minimal valid media source config, allowing field overrides."""
-    config: ConfigType = {
-        "id": "sendspin_media_source",
-        "sendspin_id": "sendspin_hub",
-    }
-    config.update(overrides)
-    return config
-
-
-def test_default_codecs_at_48_khz(set_core_config: SetCoreConfigCallable) -> None:
-    """Every codec is advertised when the sample rate suits all of them."""
-    set_core_config(PlatformFramework.ESP32_IDF)
-
-    config = CONFIG_SCHEMA(_media_source_config())
-
-    assert config[CONF_CODECS] == ["flac", "opus", "pcm"]
-
-
-def test_default_codecs_drop_opus_at_other_rates(
-    set_core_config: SetCoreConfigCallable,
-) -> None:
-    """Opus only supports 48 kHz, so it leaves the default list at other rates."""
-    set_core_config(PlatformFramework.ESP32_IDF)
-
-    config = CONFIG_SCHEMA(_media_source_config(sample_rate=44100))
-
-    assert config[CONF_CODECS] == ["flac", "pcm"]
-
-
-def test_configured_order_is_preserved(set_core_config: SetCoreConfigCallable) -> None:
-    """The list is a preference order, so it reaches the player role as written."""
-    set_core_config(PlatformFramework.ESP32_IDF)
-
-    CONFIG_SCHEMA(_media_source_config(codecs=["pcm", "flac"]))
-
-    assert _get_data().player_config[CONF_CODECS] == ["pcm", "flac"]
-
-
-def test_empty_codec_list_rejected(set_core_config: SetCoreConfigCallable) -> None:
-    """A player with no codecs at all could never be given a stream."""
-    set_core_config(PlatformFramework.ESP32_IDF)
-
-    with pytest.raises(cv.Invalid, match="length of value must be at least 1"):
-        CONFIG_SCHEMA(_media_source_config(codecs=[]))
-
-
-def test_duplicate_codec_rejected(set_core_config: SetCoreConfigCallable) -> None:
-    """A repeated codec has no meaning in a preference order."""
-    set_core_config(PlatformFramework.ESP32_IDF)
-
-    with pytest.raises(cv.Invalid, match="may only be listed once"):
-        CONFIG_SCHEMA(_media_source_config(codecs=["flac", "flac"]))
-
-
-def test_unknown_codec_rejected(set_core_config: SetCoreConfigCallable) -> None:
-    """Only codecs the player role can decode are accepted."""
-    set_core_config(PlatformFramework.ESP32_IDF)
-
-    with pytest.raises(cv.Invalid, match="Unknown value"):
-        CONFIG_SCHEMA(_media_source_config(codecs=["mp3"]))
-
-
-def test_opus_at_wrong_sample_rate_rejected(
-    set_core_config: SetCoreConfigCallable,
-) -> None:
-    """Asking for Opus at a rate it cannot handle fails rather than silently
-    dropping the stated preference."""
-    set_core_config(PlatformFramework.ESP32_IDF)
-
-    with pytest.raises(cv.Invalid, match="requires a sample_rate of 48000"):
-        CONFIG_SCHEMA(_media_source_config(codecs=["opus"], sample_rate=44100))

tests/component_tests/template/test_template_visibility.py

@@ -1,76 +0,0 @@
-"""The template platforms surface value-describing metadata on the main form.
-
-Hardware platforms get sensible defaults for unit/device_class/etc., so those
-fields fall through to the editor's advanced disclosure. A ``template`` entity
-has no such defaults -- the user is expected to define them -- so the template
-platforms pass ``visibility=cv.Visibility.UI`` to promote them onto the form.
-"""
-
-from __future__ import annotations
-
-import importlib
-
-import pytest
-
-import esphome.config_validation as cv
-
-
-def _markers(schema: cv.Schema) -> dict[str, object]:
-    s = schema
-    if hasattr(s, "validators"):
-        # cv.All -> the schema is the first validator.
-        s = s.validators[0]
-    return {str(k): k for k in s.schema}
-
-
-@pytest.mark.parametrize(
-    ("platform", "fields"),
-    [
-        (
-            "sensor",
-            [
-                "unit_of_measurement",
-                "accuracy_decimals",
-                "device_class",
-                "state_class",
-                "force_update",
-            ],
-        ),
-        ("binary_sensor", ["device_class"]),
-        ("switch", ["device_class"]),
-        ("cover", ["device_class"]),
-        ("button", ["device_class"]),
-        ("valve", ["device_class"]),
-        ("event", ["device_class"]),
-        ("text_sensor", ["device_class"]),
-        ("number", ["device_class", "unit_of_measurement"]),
-    ],
-)
-def test_template_metadata_is_ui(platform: str, fields: list[str]) -> None:
-    mod = importlib.import_module(f"esphome.components.template.{platform}")
-    markers = _markers(mod.CONFIG_SCHEMA)
-    for field in fields:
-        assert markers[field].visibility is cv.Visibility.UI, f"{platform}.{field}"
-
-
-def test_template_sensor_promotion_preserves_defaults() -> None:
-    """Promoting to UI must not drop the fields' defaults."""
-    from esphome.components.template.sensor import CONFIG_SCHEMA
-
-    markers = _markers(CONFIG_SCHEMA)
-    assert markers["accuracy_decimals"].default() == 1
-    assert markers["force_update"].default() is False
-
-
-def test_hardware_platform_metadata_not_promoted() -> None:
-    """Without ``visibility=`` the builders leave metadata unset.
-
-    Unset markers fall through to the consumer's ``Optional`` default of
-    advanced, so hardware platforms are unaffected by the template promotion.
-    """
-    from esphome.components import binary_sensor, sensor
-
-    hw_sensor = _markers(sensor.sensor_schema(device_class="temperature"))
-    assert hw_sensor["device_class"].visibility is None
-    hw_bs = _markers(binary_sensor.binary_sensor_schema(device_class="motion"))
-    assert hw_bs["device_class"].visibility is None

tests/components/api/test_proto_mac_varint.cpp

@@ -59,7 +59,7 @@ static void verify_mac(uint64_t mac, size_t expected_bytes) {
 #ifdef ESPHOME_DEBUG_API
   uint8_t *proto_debug_end_ = api_buf.data() + api_buf.size();
 #endif
-  pos = ProtoEncode::encode_varint_raw_48bit(pos PROTO_ENCODE_DEBUG_ARG, mac);
+  ProtoEncode::encode_varint_raw_48bit(pos PROTO_ENCODE_DEBUG_ARG, mac);
   size_t new_len = pos - api_buf.data();
 
   EXPECT_EQ(new_len, expected_bytes) << "mac=0x" << std::hex << mac << std::dec;

tests/components/esphome/__init__.py

@@ -0,0 +1,12 @@
+from esphome.loader import FileResource
+from tests.testing_helpers import ComponentManifestOverride
+
+
+def override_manifest(manifest: ComponentManifestOverride) -> None:
+    # to_code emits the component count the application needs
+    manifest.enable_codegen()
+    # Only the decoder is under test; its ota platform is not in this build
+    manifest.resources = manifest.resources + [
+        FileResource("esphome.components.esphome", "ota/ota_esphome_inflate.c"),
+        FileResource("esphome.components.esphome", "ota/ota_esphome_inflate.h"),
+    ]

tests/components/esphome/test_ota_inflate.cpp

@@ -0,0 +1,324 @@
+#include <gtest/gtest.h>
+
+#include <cstdint>
+#include <cstring>
+#include <vector>
+
+#include "esphome/components/esphome/ota/ota_esphome_inflate.h"
+
+namespace esphome::testing {
+
+// build_plain() compressed with the CLI's window (espota2.DEFLATE_WINDOW_BITS):
+//   DEFLATED = zlib.compress(plain, 9, wbits=-12)
+//   STORED = zlib.compress(plain[:300], 0, wbits=-12)
+static const uint8_t DEFLATED[] = {
+    0xed, 0xc8, 0xf7, 0x3f, 0xd4, 0x0f, 0x03, 0x00, 0x70, 0x67, 0xaf, 0x4b, 0x67, 0x66, 0x9f, 0x90, 0x91, 0x11, 0xc2,
+    0x11, 0x91, 0xb8, 0xb3, 0xf7, 0x3a, 0xd9, 0x5f, 0x4e, 0x99, 0x67, 0x1e, 0xce, 0x8a, 0xac, 0xec, 0x59, 0xb8, 0xc2,
+    0x95, 0x5d, 0x56, 0x42, 0x67, 0x73, 0x46, 0xf6, 0xca, 0xce, 0xc8, 0xc8, 0xc8, 0x91, 0x8a, 0x7c, 0x2f, 0x7a, 0xfe,
+    0x86, 0xe7, 0x87, 0xe7, 0x87, 0xe7, 0xf5, 0xfa, 0xbc, 0x7f, 0x7c, 0xbb, 0x07, 0xa2, 0x1f, 0xfa, 0xf9, 0xb8, 0x43,
+    0xfd, 0x82, 0x5c, 0xa0, 0x6e, 0xee, 0x28, 0x6f, 0x97, 0x20, 0x77, 0xa8, 0x3b, 0x70, 0xc0, 0x01, 0x07, 0x1c, 0x70,
+    0xc0, 0x01, 0x07, 0x1c, 0x70, 0xc0, 0x01, 0x07, 0x1c, 0x70, 0xc0, 0x01, 0x07, 0x1c, 0x70, 0xc0, 0x01, 0x07, 0x1c,
+    0x70, 0xc0, 0x01, 0xf7, 0x5f, 0xdd, 0x40, 0xd4, 0x63, 0x2f, 0x03, 0xf2, 0x17, 0xb2, 0xe5, 0x69, 0xc7, 0x5a, 0x04,
+    0xdf, 0x46, 0x22, 0xa8, 0x4b, 0x6e, 0xd5, 0x3a, 0x80, 0x05, 0xe1, 0x81, 0x4a, 0x44, 0x56, 0x27, 0xa9, 0x21, 0xf7,
+    0xad, 0xd9, 0xb0, 0xd3, 0xf1, 0xa5, 0x0b, 0x6a, 0x96, 0x56, 0xb2, 0xca, 0xb5, 0xee, 0x0f, 0x96, 0x28, 0xc3, 0x9e,
+    0x8f, 0x6e, 0xf2, 0x84, 0xa4, 0x3b, 0x2d, 0x16, 0x64, 0x08, 0x6a, 0x28, 0x91, 0xee, 0x87, 0x1a, 0x81, 0xff, 0xed,
+    0x2c, 0x5f, 0xda, 0x4a, 0x48, 0x5f, 0x91, 0xf0, 0x31, 0xfe, 0x6b, 0xbd, 0x81, 0x86, 0x92, 0x33, 0x1a, 0x6c, 0x69,
+    0x32, 0xfb, 0x19, 0x56, 0x2c, 0xc6, 0xaa, 0xef, 0xe8, 0x16, 0x98, 0xcf, 0x98, 0xbf, 0xa0, 0x2d, 0xde, 0x7f, 0xdf,
+    0x4b, 0xcb, 0xf6, 0x5c, 0xaf, 0x11, 0x24, 0xf0, 0x46, 0x3e, 0x49, 0x0e, 0x67, 0x0e, 0xcf, 0xf3, 0x57, 0xca, 0xb0,
+    0x39, 0x55, 0xe1, 0xe7, 0xfc, 0x37, 0x29, 0xe8, 0xd7, 0xf3, 0x08, 0x2e, 0xfb, 0x7b, 0x6d, 0x3e, 0xfe, 0xe9, 0x2c,
+    0x68, 0xe4, 0x20, 0x88, 0x57, 0x56, 0x41, 0x3d, 0xab, 0x9b, 0xbf, 0x0c, 0x0c, 0xae, 0x51, 0x48, 0x8b, 0x72, 0xcc,
+    0xb8, 0xbb, 0xf3, 0x30, 0xa8, 0x5c, 0xb5, 0xa1, 0x2f, 0x07, 0x52, 0xe9, 0x36, 0xb8, 0x3c, 0xbc, 0xee, 0xbc, 0xf1,
+    0xa3, 0x8b, 0x81, 0xc2, 0x03, 0xbf, 0x29, 0x5a, 0x22, 0x24, 0x97, 0xf8, 0xc9, 0xb5, 0xbf, 0xd2, 0x24, 0x4a, 0x86,
+    0xc1, 0x2b, 0xb7, 0xb8, 0xde, 0xa7, 0xea, 0xa5, 0x1d, 0x13, 0x1c, 0x1d, 0xd3, 0x3c, 0x81, 0x60, 0x2e, 0x2f, 0x93,
+    0x5c, 0x78, 0x43, 0x2e, 0x39, 0x68, 0x09, 0x13, 0x09, 0x10, 0xce, 0xd6, 0x8d, 0xe9, 0x2f, 0xaf, 0x88, 0x6f, 0x99,
+    0x4f, 0xcd, 0xdc, 0xaa, 0xf9, 0x47, 0xdb, 0x1c, 0xb5, 0x89, 0x53, 0x10, 0x3d, 0x77, 0xac, 0x26, 0x04, 0x3a, 0x3b,
+    0x18, 0xf8, 0x47, 0x75, 0x56, 0xa5, 0xda, 0x70, 0xfb, 0xf7, 0x0d, 0x3b, 0x6e, 0x4b, 0x2a, 0xbc, 0x49, 0x32, 0x43,
+    0x95, 0x62, 0x83, 0x3d, 0xdc, 0x0a, 0x1f, 0x1d, 0xf9, 0x59, 0x6b, 0x95, 0xf0, 0x9b, 0xf5, 0x53, 0x9e, 0xb5, 0x65,
+    0xeb, 0x74, 0xfa, 0x81, 0x9b, 0x61, 0xa3, 0x57, 0x2f, 0xda, 0x2c, 0xcd, 0xf8, 0xb0, 0x74, 0xb9, 0x62, 0x39, 0x91,
+    0xd9, 0x7d, 0xb3, 0x03, 0x65, 0x2e, 0x66, 0x20, 0x18, 0xac, 0xa2, 0xeb, 0x3b, 0x35, 0x98, 0xa3, 0x28, 0x46, 0x30,
+    0xee, 0xd3, 0xeb, 0x47, 0x49, 0x11, 0xc5, 0xcd, 0xa0, 0xa5, 0x1c, 0x2e, 0x9d, 0x14, 0xd6, 0x46, 0x4a, 0x05, 0x7b,
+    0xd3, 0xb9, 0x0d, 0xeb, 0xd7, 0x6f, 0xb5, 0xf4, 0xed, 0x3f, 0x27, 0xb8, 0xec, 0x51, 0xb1, 0x6e, 0xb0, 0x14, 0xed,
+    0xdf, 0x90, 0x72, 0x59, 0x71, 0xd5, 0xf5, 0xf2, 0x61, 0x5f, 0xa7, 0x8a, 0xd7, 0x0f, 0x80, 0x2f, 0xe5, 0x0f, 0x45,
+    0xf2, 0x4d, 0xd1, 0xdc, 0xdd, 0xce, 0x46, 0xdf, 0x77, 0xf2, 0xa6, 0xa2, 0x79, 0x77, 0xf0, 0x0e, 0xaa, 0x68, 0x14,
+    0x85, 0x32, 0x05, 0x29, 0x75, 0x2b, 0x6c, 0xb0, 0x7c, 0x84, 0xc9, 0xec, 0x49, 0x70, 0x9b, 0x38, 0x36, 0x4c, 0xe9,
+    0xa5, 0xdc, 0xb1, 0xb8, 0x28, 0xd6, 0x20, 0x89, 0x8a, 0x2a, 0x62, 0xc1, 0x90, 0x3a, 0x43, 0x48, 0xaa, 0xfc, 0xec,
+    0x52, 0xf4, 0x02, 0xa7, 0xcd, 0x46, 0xf9, 0x78, 0x64, 0x4f, 0xad, 0x6b, 0x17, 0xdb, 0x56, 0xa2, 0xa1, 0x6a, 0xcf,
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+    0xd1, 0x9e, 0x08, 0x4b, 0x57, 0x4e, 0xd9, 0xf3, 0xe8, 0x81, 0x03, 0x5c, 0xd6, 0x6c, 0x2c, 0xea, 0x27, 0x2d, 0xfb,
+    0x39, 0xbb, 0x25, 0x81, 0xbb, 0x1a, 0xc3, 0xcb, 0xf5, 0x5e, 0x69, 0x1c, 0xa4, 0x8a, 0x0e, 0x4a, 0x69, 0xdf, 0xcd,
+    0x6c, 0xc7, 0xce, 0x48, 0xdb, 0x7a, 0x0b, 0xcb, 0x40, 0xc8, 0x59, 0x81, 0xde, 0x71, 0x3e, 0x0d, 0x41, 0xc9, 0xa2,
+    0x57, 0xae, 0xb7, 0x3f, 0x8b, 0x4e, 0x7c, 0xcb, 0xf9, 0xa5, 0xcb, 0xf8, 0xee, 0x52, 0xbe, 0x54, 0xa8, 0xef, 0x99,
+    0xb7, 0xa1, 0x0b, 0x77, 0xa2, 0xa7, 0x89, 0x47, 0x7f, 0x48, 0xaa, 0x02, 0x36, 0xbf, 0x9d, 0x97, 0xba, 0x43, 0x5e,
+    0x39, 0xa6, 0x99, 0x81, 0xde, 0xe4, 0x98, 0x06, 0x6a, 0xc8, 0x2c, 0x96, 0xf5, 0x51, 0x8c, 0x95, 0xd3, 0xe4, 0x2b,
+    0x94, 0x9a, 0x15, 0x71, 0x9f, 0xa4, 0x24, 0xfc, 0x92, 0x97, 0x18, 0xb7, 0x56, 0xe5, 0x59, 0xe1, 0x1a, 0x79, 0x3a,
+    0x47, 0x77, 0x92, 0xf5, 0x75, 0x42, 0xbd, 0x2d, 0x55, 0x05, 0xcf, 0xe8, 0xea, 0x64, 0x8b, 0xff, 0x30, 0xa1, 0x1e,
+    0x28, 0x2c, 0xa9, 0xaa, 0xd4, 0x19, 0x1d, 0x24, 0x7a, 0xcf, 0x5d, 0x39, 0xf2, 0xe3, 0xd2, 0xab, 0x26, 0x97, 0x35,
+    0xf6, 0x70, 0x8b, 0x09, 0x8b, 0x00, 0xb9, 0xb8, 0xa8, 0xb7, 0x78, 0xf1, 0x96, 0x03, 0xd2, 0x72, 0x46, 0x26, 0x82,
+    0x41, 0xce, 0xe3, 0x73, 0xb2, 0x31, 0x4f, 0x49, 0xc8, 0xa8, 0xcf, 0xcc, 0xb8, 0xcc, 0x5d, 0xab, 0xd1, 0x1e, 0xf5,
+    0x5a, 0x9a, 0x54, 0xaf, 0x15, 0xed, 0x5f, 0x96, 0x2b, 0x62, 0x0a, 0x4c, 0x67, 0x21, 0x98, 0xfd, 0x29, 0xf8, 0x12,
+    0x9d, 0xc2, 0x34, 0x4d, 0x70, 0x0e, 0x3b, 0x5e, 0xe3, 0x91, 0x58, 0x82, 0xa8, 0x9c, 0x7d, 0x11, 0xfb, 0x5d, 0x81,
+    0x0c, 0x0f, 0x9d, 0x84, 0xbb, 0xeb, 0x65, 0x1d, 0xeb, 0x6e, 0x18, 0x8e, 0x93, 0x70, 0xbb, 0x9d, 0xed, 0x58, 0xb2,
+    0x64, 0xf2, 0x7b, 0x8f, 0x05, 0xd8, 0xfa, 0x55, 0x50, 0xef, 0x7a, 0x49, 0x0d, 0xdf, 0xca, 0x63, 0xff, 0x41, 0x1d,
+    0x89, 0x79, 0xca, 0x8c, 0x1b, 0xbe, 0x75, 0x6f, 0x0e, 0x6b, 0x68, 0x8c, 0x5c, 0x93, 0xc8, 0xf3, 0x62, 0x0b, 0x68,
+    0xb1, 0x32, 0x2f, 0x1e, 0xda, 0xe5, 0x6d, 0x45, 0xaf, 0x3d, 0xa7, 0xaf, 0x81, 0x0f, 0xda, 0x82, 0x85, 0x94, 0x06,
+    0xc5, 0x3f, 0xf5, 0x73, 0x5f, 0xa4, 0x43, 0x5f, 0xb3, 0xac, 0x3d, 0x16, 0xe8, 0x6f, 0x84, 0xb3, 0xb6, 0x75, 0xf7,
+    0x13, 0x03, 0x46, 0x67, 0x87, 0x9a, 0xf1, 0x6c, 0x2e, 0x33, 0x33, 0x14, 0x85, 0x18, 0xe9, 0xd6, 0x1b, 0xee, 0x17,
+    0xe9, 0xe7, 0x6b, 0xd4, 0x46, 0xaf, 0x26, 0x55, 0x8d, 0xfc, 0x3a, 0xb4, 0x61, 0x1a, 0x9e, 0x2d, 0x85, 0xa2, 0x86,
+    0x8c, 0x92, 0xbd, 0x8d, 0x0e, 0x4b, 0x4e, 0x0d, 0xdf, 0x4a, 0xc6, 0x66, 0xcd, 0x28, 0xff, 0xc4, 0x44, 0xba, 0x39,
+    0x4a, 0x04, 0x43, 0xce, 0x95, 0x47, 0x99, 0x8c, 0x9b, 0xb7, 0x72, 0x48, 0xdd, 0x9b, 0x98, 0x4f, 0xd5, 0x18, 0x81,
+    0xb4, 0xef, 0xfa, 0x96, 0x54, 0x9b, 0xda, 0x73, 0xe2, 0xe0, 0x27, 0x2f, 0x10, 0x0f, 0xf9, 0x0e, 0x24, 0xb4, 0xd2,
+    0x39, 0xf7, 0x49, 0x8c, 0x5c, 0x05, 0x37, 0xdd, 0xa7, 0x73, 0xac, 0x16, 0x85, 0x71, 0x46, 0xd1, 0x6f, 0x7a, 0x25,
+    0xd2, 0x5c, 0x4e, 0x70, 0x26, 0x93, 0x36, 0x22, 0x5f, 0xe5, 0x42, 0x4e, 0x89, 0xf2, 0x4c, 0x55, 0x9b, 0xd1, 0xa5,
+    0xaf, 0x87, 0xd8, 0x7e, 0xe8, 0xdd, 0xb9, 0x47, 0xb3, 0xda, 0xf7, 0x98, 0x52, 0x73, 0x8b, 0x3c, 0x0b, 0xe7, 0xfa,
+    0x14, 0x7f, 0x9a, 0xa6, 0x8e, 0xf4, 0x7c, 0xad, 0x58, 0x11, 0x73, 0xe3, 0x3a, 0x56, 0x47, 0x9b, 0x95, 0x24, 0x68,
+    0x35, 0xa9, 0xd9, 0x6e, 0x5c, 0x4d, 0xe8, 0xa4, 0xb8, 0x80, 0x0b, 0x73, 0xc4, 0x0f, 0x87, 0x0c, 0xa1, 0xf4, 0x5a,
+    0x3c, 0xce, 0x3f, 0x30, 0x3d, 0xb5, 0xc1, 0x0b, 0x43, 0x2a, 0xb1, 0xbe, 0x6b, 0x12, 0xc4, 0x4b, 0xdb, 0xcb, 0x2f,
+    0x77, 0x8a, 0x3a, 0xba, 0xf4, 0xa3, 0x9b, 0x05, 0xee, 0x98, 0x50, 0x77, 0xfe, 0x82, 0x5b, 0x29, 0x6d, 0x7c, 0x0c,
+    0x4b, 0x41, 0xa2, 0x6a, 0xb2, 0x27, 0x32, 0xf1, 0x0c, 0x1d, 0xd7, 0x6c, 0x02, 0x4d, 0xbd, 0xf2, 0x5a, 0x66, 0xd3,
+    0xb5, 0x30, 0xab, 0x4b, 0x7e, 0x72, 0x77, 0x30, 0x42, 0xd7, 0x70, 0x05, 0x9f, 0xeb, 0x2f, 0x22, 0x7f, 0x49, 0x2d,
+    0x5d, 0xcf, 0x4b, 0x84, 0x0c, 0xa5, 0xb9, 0xe5, 0x49, 0xae, 0x54, 0x2c, 0x86, 0x53, 0x4c, 0x9c, 0x42, 0x29, 0x78,
+    0xf0, 0x0a, 0x8a, 0x36, 0x53, 0x4d, 0x2b, 0xc9, 0xe2, 0x69, 0x0e, 0x9a, 0x37, 0x0c, 0x91, 0x2d, 0xac, 0x2f, 0x43,
+    0x6a, 0xf1, 0xe9, 0xfb, 0xb4, 0x68, 0xec, 0x90, 0x00, 0xff, 0x32, 0xf8, 0x58, 0xab, 0xd1, 0x73, 0x9f, 0x77, 0x72,
+    0x22, 0xed, 0x64, 0xac, 0x7d, 0xd0, 0xa8, 0x1f, 0x01, 0x99, 0x9f, 0xfd, 0xa6, 0xcb, 0x62, 0xca, 0x65, 0xd8, 0xf8,
+    0x31, 0xf0, 0xc1, 0x5e, 0xef, 0xf1, 0x4d, 0x79, 0xa9, 0xfc, 0x8f, 0x57, 0xcb, 0xc1, 0xb7, 0x03, 0x30, 0xbb, 0xad,
+    0xdb, 0x88, 0xf7, 0xcc, 0xa1, 0x25, 0xfd, 0x37, 0x03, 0xc5, 0xdb, 0x7f, 0xb4, 0xe0, 0xe6, 0xa3, 0x7e, 0xa4, 0x52,
+    0x68, 0xa7, 0x2e, 0xe6, 0x1c, 0xea, 0x91, 0x48, 0x67, 0xbd, 0x3d, 0x6d, 0xcc, 0x09, 0x49, 0x17, 0x50, 0x16, 0xb5,
+    0x65, 0x63, 0xd4, 0x84, 0x2c, 0x3a, 0x5f, 0x6a, 0x3c, 0x66, 0xfa, 0x24, 0xaf, 0xd1, 0xfd, 0x18, 0x66, 0xe4, 0xe8,
+    0x3c, 0x6c, 0x74, 0xb6, 0xc5, 0x4c, 0xf8, 0xa8, 0x15, 0x3c, 0xd0, 0xb8, 0x4a, 0x53, 0x15, 0x4b, 0x1e, 0x56, 0x7f,
+    0xd8, 0x40, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0xfe, 0xe7, 0xdc, 0x03, 0xd1, 0x0f, 0xfd, 0x7c, 0xdc, 0xa1, 0x7e, 0x41, 0x2e, 0x50, 0x37, 0x77, 0x94, 0xb7, 0x4b,
+    0x90, 0x3b, 0x14, 0x38, 0xe0, 0x80, 0x03, 0x0e, 0x38, 0xe0, 0x80, 0xfb, 0xff, 0xba, 0xff, 0x00,
+};
+
+static const uint8_t STORED[] = {
+    0x01, 0x2c, 0x01, 0xd3, 0xfe, 0x65, 0x73, 0x70, 0x68, 0x6f, 0x6d, 0x65, 0x20, 0x6f, 0x74, 0x61, 0x20, 0x64,
+    0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20, 0x65, 0x73, 0x70, 0x68, 0x6f, 0x6d, 0x65, 0x20, 0x6f, 0x74, 0x61,
+    0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20, 0x65, 0x73, 0x70, 0x68, 0x6f, 0x6d, 0x65, 0x20, 0x6f,
+    0x74, 0x61, 0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20, 0x65, 0x73, 0x70, 0x68, 0x6f, 0x6d, 0x65,
+    0x20, 0x6f, 0x74, 0x61, 0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20, 0x65, 0x73, 0x70, 0x68, 0x6f,
+    0x6d, 0x65, 0x20, 0x6f, 0x74, 0x61, 0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20, 0x65, 0x73, 0x70,
+    0x68, 0x6f, 0x6d, 0x65, 0x20, 0x6f, 0x74, 0x61, 0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20, 0x65,
+    0x73, 0x70, 0x68, 0x6f, 0x6d, 0x65, 0x20, 0x6f, 0x74, 0x61, 0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65,
+    0x20, 0x65, 0x73, 0x70, 0x68, 0x6f, 0x6d, 0x65, 0x20, 0x6f, 0x74, 0x61, 0x20, 0x64, 0x65, 0x66, 0x6c, 0x61,
+    0x74, 0x65, 0x20, 0x65, 0x73, 0x70, 0x68, 0x6f, 0x6d, 0x65, 0x20, 0x6f, 0x74, 0x61, 0x20, 0x64, 0x65, 0x66,
+    0x6c, 0x61, 0x74, 0x65, 0x20, 0x65, 0x73, 0x70, 0x68, 0x6f, 0x6d, 0x65, 0x20, 0x6f, 0x74, 0x61, 0x20, 0x64,
+    0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20, 0x65, 0x73, 0x70, 0x68, 0x6f, 0x6d, 0x65, 0x20, 0x6f, 0x74, 0x61,
+    0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20, 0x65, 0x73, 0x70, 0x68, 0x6f, 0x6d, 0x65, 0x20, 0x6f,
+    0x74, 0x61, 0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20, 0x65, 0x73, 0x70, 0x68, 0x6f, 0x6d, 0x65,
+    0x20, 0x6f, 0x74, 0x61, 0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20, 0x65, 0x73, 0x70, 0x68, 0x6f,
+    0x6d, 0x65, 0x20, 0x6f, 0x74, 0x61, 0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20, 0x65, 0x73, 0x70,
+    0x68, 0x6f, 0x6d, 0x65, 0x20, 0x6f, 0x74, 0x61, 0x20, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x20,
+};
+
+static constexpr size_t WINDOW = 4096;
+static constexpr size_t PLAIN_SIZE = 16000;
+
+static uint8_t lcg_next(uint32_t &x) {
+  x = (x * 1103515245u + 12345u) & 0x7fffffffu;
+  return (x >> 16) & 0xff;
+}
+
+static std::vector<uint8_t> build_plain() {
+  std::vector<uint8_t> plain;
+  const char *text = "esphome ota deflate ";
+  for (int i = 0; i < 300; i++)
+    plain.insert(plain.end(), text, text + strlen(text));
+  uint32_t x = 1;
+  for (int i = 0; i < 3000; i++)
+    plain.push_back(lcg_next(x));
+  plain.insert(plain.end(), 5000, 0);
+  for (int i = 0; i < 100; i++)
+    plain.insert(plain.end(), text, text + strlen(text));
+  return plain;
+}
+
+// Mirrors the OTA session: chunked input through the read callback, window as output
+struct Session : OtaInflateState {
+  const uint8_t *in;
+  size_t in_len;
+  size_t in_pos;
+  size_t chunk;
+  std::vector<uint8_t> out;
+  uint8_t window[WINDOW];
+};
+
+static int read_cb(OtaInflateState *d) {
+  auto *s = static_cast<Session *>(d);
+  if (s->in_pos >= s->in_len)
+    return -1;
+  size_t n = std::min(s->chunk, s->in_len - s->in_pos);
+  d->source = s->in + s->in_pos + 1;
+  d->source_limit = s->in + s->in_pos + n;
+  s->in_pos += n;
+  return s->in[s->in_pos - n];
+}
+
+// Inflates the whole input; returns the decoder result and fills s.out
+static int inflate_all(Session &s, const uint8_t *in, size_t in_len, size_t chunk) {
+  s.in = in;
+  s.in_len = in_len;
+  s.in_pos = 0;
+  s.chunk = chunk;
+  s.out.clear();
+  memset(s.window, 0, sizeof(s.window));
+  ota_inflate_init(&s, s.window, WINDOW);
+  s.source_read_cb = read_cb;
+  int res;
+  do {
+    s.dest = s.window;
+    s.dest_limit = s.window + WINDOW;
+    res = ota_inflate(&s);
+    if (res < 0 || s.eof)
+      return res < 0 ? res : OTA_INFLATE_DATA_ERROR;
+    s.out.insert(s.out.end(), s.window, s.dest);
+    if (s.out.size() > PLAIN_SIZE)
+      return OTA_INFLATE_DATA_ERROR;
+  } while (res != OTA_INFLATE_DONE);
+  return res;
+}
+
+TEST(OtaInflate, RoundTripThroughWindow) {
+  auto s = std::make_unique<Session>();
+  ASSERT_EQ(inflate_all(*s, DEFLATED, sizeof(DEFLATED), 1040), OTA_INFLATE_DONE);
+  EXPECT_EQ(s->out, build_plain());
+  EXPECT_EQ(s->in_pos, sizeof(DEFLATED));
+}
+
+TEST(OtaInflate, SmallReadChunks) {
+  auto s = std::make_unique<Session>();
+  ASSERT_EQ(inflate_all(*s, DEFLATED, sizeof(DEFLATED), 7), OTA_INFLATE_DONE);
+  EXPECT_EQ(s->out, build_plain());
+}
+
+TEST(OtaInflate, StoredBlock) {
+  auto s = std::make_unique<Session>();
+  ASSERT_EQ(inflate_all(*s, STORED, sizeof(STORED), 64), OTA_INFLATE_DONE);
+  auto plain = build_plain();
+  plain.resize(300);
+  EXPECT_EQ(s->out, plain);
+}
+
+TEST(OtaInflate, TruncatedStreamFails) {
+  auto s = std::make_unique<Session>();
+  for (size_t cut : {size_t{1}, size_t{100}, size_t{1000}, sizeof(DEFLATED) - 1}) {
+    EXPECT_LT(inflate_all(*s, DEFLATED, cut, 1040), 0) << "cut at " << cut;
+    EXPECT_LE(s->out.size(), PLAIN_SIZE);
+  }
+}
+
+TEST(OtaInflate, TruncatedStoredBlockFails) {
+  auto s = std::make_unique<Session>();
+  EXPECT_LT(inflate_all(*s, STORED, sizeof(STORED) - 50, 64), 0);
+}
+
+TEST(OtaInflate, CorruptStreamsNeverEscapeTheWindow) {
+  // Flipped bytes and garbage; the sanitizers check the decoder stays in bounds
+  auto s = std::make_unique<Session>();
+  std::vector<uint8_t> bad(DEFLATED, DEFLATED + sizeof(DEFLATED));
+  // A coarse, non-aligned stride: neighbouring offsets hit the same paths
+  for (size_t i = 0; i < bad.size(); i += 29) {
+    bad[i] ^= 0x5a;
+    inflate_all(*s, bad.data(), bad.size(), 1040);
+    bad[i] ^= 0x5a;
+  }
+  uint32_t x = 99;
+  std::vector<uint8_t> garbage(2000);
+  for (int round = 0; round < 50; round++) {
+    for (auto &b : garbage)
+      b = lcg_next(x);
+    inflate_all(*s, garbage.data(), garbage.size(), 1040);
+  }
+}
+
+}  // namespace esphome::testing

tests/components/ota/test.bk72xx-ard.yaml

@@ -0,0 +1 @@
+<<: !include common.yaml

tests/components/ota/test_backend_contract.cpp

@@ -14,7 +14,7 @@ struct MinimalBackend {
   OTAResponseTypes write(uint8_t *data, size_t len) { return OTA_RESPONSE_OK; }
   OTAResponseTypes end() { return OTA_RESPONSE_OK; }
   void abort() {}
-  bool supports_compression() { return false; }
+  static constexpr bool supports_compression() { return false; }
 };
 static_assert(OTABackendContract<MinimalBackend>);
 

tests/components/sendspin/common-hub.yaml

@@ -4,6 +4,3 @@ psram:
 sendspin:
   id: sendspin_hub_id
   task_stack_in_psram: true
-  manufacturer: Test Manufacturer
-  model: Test Model
-  firmware_version: 1.2.3

tests/components/serial_proxy/test-tap.esp32-idf.yaml

@@ -1,14 +0,0 @@
-substitutions:
-  tx_pin: GPIO4
-  rx_pin: GPIO5
-
-# Compile the tap code paths; no tap is attached, so this exercises the
-# null-tap branches that a normal build never defines.
-esphome:
-  platformio_options:
-    build_flags:
-      - "-DUSE_SERIAL_PROXY_TAP"
-
-packages:
-  uart: !include ../../test_build_components/common/uart/esp32-idf.yaml
-  serial_proxy: !include common.yaml

tests/integration/fixtures/api_empty_message_roundtrip.yaml

@@ -1,11 +0,0 @@
-esphome:
-  name: api-empty-message-test
-host:
-api:
-logger:
-  level: DEBUG
-
-switch:
-  - platform: template
-    name: "Empty Message Switch"
-    optimistic: true

tests/integration/fixtures/api_encode_boundaries.yaml

@@ -1,58 +0,0 @@
-esphome:
-  name: api-encode-boundaries-test
-  # Top-level area fills DeviceInfoResponse.suggested_area (field 16, a two-byte tag)
-  area:
-    id: kitchen_area
-    name: Kitchen
-  on_boot:
-    - sensor.template.publish:
-        id: zero_then_value
-        state: 0.0
-
-host:
-api:
-logger:
-  level: DEBUG
-
-sensor:
-  - platform: template
-    name: "Zero Then Value"
-    id: zero_then_value
-    # Negative int32 takes the ten byte varint path
-    accuracy_decimals: -2
-    update_interval: never
-
-text_sensor:
-  - platform: template
-    name: "Long Text"
-    id: long_text
-    update_interval: never
-
-number:
-  - platform: template
-    name: "Negative Number"
-    optimistic: true
-    min_value: -1000
-    max_value: 1000
-    step: 0.5
-    initial_value: -123.5
-
-select:
-  - platform: template
-    name: "Long Option Select"
-    optimistic: true
-    options:
-      - short
-      - "option-with-a-name-long-enough-that-its-length-prefix-needs-two-varint-bytes-when-the-list-entities-response-is-encoded-xxxxxxxxxx"
-    initial_option: short
-
-button:
-  - platform: template
-    name: "Publish Values"
-    on_press:
-      - sensor.template.publish:
-          id: zero_then_value
-          state: 12.5
-      - text_sensor.template.publish:
-          id: long_text
-          state: !lambda return std::string(200, 'y');

tests/integration/fixtures/host_ota_deflate.yaml

@@ -0,0 +1,9 @@
+esphome:
+  name: host-ota-test
+host:
+api:
+ota:
+  - platform: esphome
+    port: __OTA_PORT__
+logger:
+  level: DEBUG

tests/integration/integration_test_durations.json

@@ -1,154 +1,143 @@
 {
-  "tests/integration/test_action_concurrent_reentry.py": 30.48,
-  "tests/integration/test_addressable_light_transition.py": 42.1,
-  "tests/integration/test_alarm_control_panel_state_transitions.py": 35.76,
-  "tests/integration/test_api_action_metadata.py": 22.35,
-  "tests/integration/test_api_action_responses.py": 30.31,
-  "tests/integration/test_api_action_timeout.py": 34.73,
-  "tests/integration/test_api_conditional_memory.py": 18.35,
-  "tests/integration/test_api_custom_services.py": 15.99,
-  "tests/integration/test_api_get_time_response_timezone.py": 24.21,
-  "tests/integration/test_api_homeassistant.py": 33.77,
-  "tests/integration/test_api_homeassistant_action_no_subscriber.py": 20.8,
-  "tests/integration/test_api_homeassistant_binary_sensor_initial_state.py": 23.55,
-  "tests/integration/test_api_list_entities_backpressure.py": 23.04,
-  "tests/integration/test_api_message_size_batching.py": 27.31,
-  "tests/integration/test_api_reboot_timeout.py": 29.32,
-  "tests/integration/test_api_string_lambda.py": 14.9,
-  "tests/integration/test_api_vv_logging.py": 26.25,
-  "tests/integration/test_api_zero_psk_provisioning.py": 38.19,
-  "tests/integration/test_areas_and_devices.py": 27.52,
-  "tests/integration/test_automation_wait_actions.py": 24.25,
-  "tests/integration/test_automations.py": 36.02,
-  "tests/integration/test_batch_delay_zero_rapid_transitions.py": 18.46,
-  "tests/integration/test_binary_sensor_autorepeat_filter.py": 17.47,
-  "tests/integration/test_binary_sensor_invalidate_state.py": 14.79,
-  "tests/integration/test_blocking_warning_log_time_not_charged_to_next_operation.py": 21.52,
-  "tests/integration/test_build_info.py": 21.42,
-  "tests/integration/test_camera_mock.py": 17.02,
-  "tests/integration/test_climate_control_action.py": 26.56,
-  "tests/integration/test_climate_custom_modes.py": 18.82,
-  "tests/integration/test_continuation_actions.py": 20.39,
-  "tests/integration/test_cover_control_action.py": 19.91,
-  "tests/integration/test_crc8_helper.py": 16.73,
-  "tests/integration/test_device_id_in_state.py": 58.41,
-  "tests/integration/test_duplicate_entities.py": 30.76,
-  "tests/integration/test_entity_icon.py": 25.34,
-  "tests/integration/test_fan_turn_on_action.py": 23.64,
-  "tests/integration/test_fnv1_hash_object_id.py": 25.44,
-  "tests/integration/test_fnv1a_hash.py": 20.85,
-  "tests/integration/test_gpio_expander_cache.py": 14.42,
-  "tests/integration/test_host_logger_thread_safety.py": 21.31,
-  "tests/integration/test_host_mode_basic.py": 2.65,
-  "tests/integration/test_host_mode_batch_delay.py": 22.21,
-  "tests/integration/test_host_mode_climate_basic_state.py": 27.12,
-  "tests/integration/test_host_mode_climate_control.py": 21.57,
-  "tests/integration/test_host_mode_empty_string_options.py": 27.17,
-  "tests/integration/test_host_mode_entity_fields.py": 30.1,
-  "tests/integration/test_host_mode_fan_preset.py": 17.55,
-  "tests/integration/test_host_mode_many_entities.py": 38.98,
-  "tests/integration/test_host_mode_many_entities_multiple_connections.py": 23.82,
-  "tests/integration/test_host_mode_noise_encryption.py": 39.84,
-  "tests/integration/test_host_mode_reconnect.py": 13.1,
-  "tests/integration/test_host_mode_sensor.py": 22.17,
-  "tests/integration/test_host_ota.py": 92.05,
-  "tests/integration/test_host_preferences.py": 20.29,
-  "tests/integration/test_host_preferences_suspend_resume.py": 15.02,
-  "tests/integration/test_improv_serial_uart.py": 30.15,
-  "tests/integration/test_large_message_batching.py": 25.84,
-  "tests/integration/test_legacy_area.py": 21.24,
-  "tests/integration/test_legacy_climate_compat.py": 17.34,
-  "tests/integration/test_legacy_fan_compat.py": 22.6,
-  "tests/integration/test_light_automations.py": 29.13,
-  "tests/integration/test_light_binary_effect_off_phase.py": 33.99,
-  "tests/integration/test_light_calls.py": 26.81,
-  "tests/integration/test_light_constant_brightness.py": 25.0,
-  "tests/integration/test_light_control_action.py": 25.57,
-  "tests/integration/test_light_dim_relative_action.py": 21.4,
-  "tests/integration/test_light_effect_zero_brightness.py": 19.65,
-  "tests/integration/test_light_initial_state.py": 17.58,
-  "tests/integration/test_light_toggle_action.py": 28.28,
-  "tests/integration/test_lock_automations.py": 23.3,
-  "tests/integration/test_logger_buffered_recursion_guard.py": 22.96,
-  "tests/integration/test_loop_disable_enable.py": 16.18,
-  "tests/integration/test_loop_interval_decoupling.py": 25.19,
-  "tests/integration/test_loop_interval_default_not_pulled_forward.py": 20.59,
-  "tests/integration/test_lvgl_headless_render.py": 87.78,
-  "tests/integration/test_micros_to_millis.py": 18.73,
-  "tests/integration/test_multi_click_trigger.py": 24.2,
-  "tests/integration/test_multi_device_preferences.py": 20.52,
-  "tests/integration/test_noise_encryption_key_protection.py": 19.1,
-  "tests/integration/test_object_id_api_verification.py": 26.24,
-  "tests/integration/test_object_id_friendly_name_no_mac_suffix.py": 14.88,
-  "tests/integration/test_object_id_no_friendly_name.py": 61.27,
-  "tests/integration/test_online_image_auto_detects_image_bmp_mime.py": 82.32,
-  "tests/integration/test_online_image_auto_detects_redirected_image_bmp_mime.py": 46.03,
-  "tests/integration/test_online_image_bmp.py": 34.21,
-  "tests/integration/test_oversized_payloads.py": 62.75,
-  "tests/integration/test_preference_key_stability.py": 26.8,
-  "tests/integration/test_runtime_stats.py": 28.26,
-  "tests/integration/test_safe_mode_loop_runs.py": 18.14,
-  "tests/integration/test_scheduler_blocking_warning.py": 28.7,
-  "tests/integration/test_scheduler_bulk_cleanup.py": 20.73,
-  "tests/integration/test_scheduler_defer_cancel.py": 22.99,
-  "tests/integration/test_scheduler_defer_cancel_regular.py": 21.97,
-  "tests/integration/test_scheduler_defer_fifo_simple.py": 24.15,
-  "tests/integration/test_scheduler_defer_stress.py": 23.11,
-  "tests/integration/test_scheduler_heap_stress.py": 20.2,
-  "tests/integration/test_scheduler_internal_id_no_collision.py": 23.75,
-  "tests/integration/test_scheduler_interval_reschedule.py": 15.32,
-  "tests/integration/test_scheduler_interval_zero_coerced.py": 20.1,
-  "tests/integration/test_scheduler_null_name.py": 17.43,
-  "tests/integration/test_scheduler_numeric_id_test.py": 25.51,
-  "tests/integration/test_scheduler_pool.py": 24.22,
-  "tests/integration/test_scheduler_rapid_cancellation.py": 24.01,
-  "tests/integration/test_scheduler_recursive_timeout.py": 22.94,
-  "tests/integration/test_scheduler_removed_item_race.py": 23.07,
-  "tests/integration/test_scheduler_self_keyed.py": 18.43,
-  "tests/integration/test_scheduler_simultaneous_callbacks.py": 21.99,
-  "tests/integration/test_scheduler_string_test.py": 17.27,
-  "tests/integration/test_script_array_params.py": 4.59,
-  "tests/integration/test_script_delay_params.py": 22.46,
-  "tests/integration/test_script_queued.py": 25.24,
-  "tests/integration/test_script_queued_idle_loop.py": 5.04,
-  "tests/integration/test_script_wait_on_boot.py": 21.77,
-  "tests/integration/test_sdl_headless_screenshot.py": 19.23,
-  "tests/integration/test_select_stringref_trigger.py": 19.31,
-  "tests/integration/test_sensor_filters_delta.py": 25.92,
-  "tests/integration/test_sensor_filters_ring_buffer.py": 22.39,
-  "tests/integration/test_sensor_filters_sliding_window.py": 57.93,
-  "tests/integration/test_sensor_filters_value_list.py": 20.32,
-  "tests/integration/test_sensor_timeout_filter.py": 25.35,
-  "tests/integration/test_snapshot_display.py": 19.7,
-  "tests/integration/test_socket_wake_gate_tcp.py": 14.5,
-  "tests/integration/test_status_flags.py": 33.83,
-  "tests/integration/test_strftime_to.py": 17.64,
-  "tests/integration/test_syslog.py": 24.49,
-  "tests/integration/test_template_alarm_control_panel_many_sensors.py": 24.81,
-  "tests/integration/test_template_climate_basic.py": 15.28,
-  "tests/integration/test_template_climate_custom_modes.py": 25.07,
-  "tests/integration/test_template_climate_nonoptimistic.py": 24.25,
-  "tests/integration/test_template_climate_on_control_ordering.py": 24.09,
-  "tests/integration/test_template_climate_publish_all_fields.py": 17.78,
-  "tests/integration/test_template_climate_sensor_push.py": 17.42,
-  "tests/integration/test_template_climate_set_actions.py": 23.63,
-  "tests/integration/test_template_climate_two_point_temperature.py": 25.19,
-  "tests/integration/test_template_text_save.py": 17.88,
-  "tests/integration/test_text_command.py": 22.71,
-  "tests/integration/test_text_sensor_raw_state.py": 25.17,
-  "tests/integration/test_uart_mock_ld2410.py": 58.15,
-  "tests/integration/test_uart_mock_ld2412.py": 61.14,
-  "tests/integration/test_uart_mock_ld2420.py": 33.87,
-  "tests/integration/test_uart_mock_ld2450.py": 26.06,
-  "tests/integration/test_uart_mock_modbus.py": 391.79,
-  "tests/integration/test_udp.py": 7.38,
-  "tests/integration/test_use_address_runtime.py": 24.09,
-  "tests/integration/test_valve_control_action.py": 23.22,
-  "tests/integration/test_varint_five_byte_device_id.py": 17.93,
-  "tests/integration/test_wait_until_mid_loop_timing.py": 22.26,
-  "tests/integration/test_wait_until_on_boot.py": 17.46,
-  "tests/integration/test_wait_until_ordering.py": 11.89,
-  "tests/integration/test_wait_until_reentrant_restart.py": 22.88,
-  "tests/integration/test_wake_loop_forces_phase_b.py": 16.6,
-  "tests/integration/test_water_heater_template.py": 19.66
+  "tests/integration/test_action_concurrent_reentry.py": 57.91,
+  "tests/integration/test_addressable_light_transition.py": 21.25,
+  "tests/integration/test_alarm_control_panel_state_transitions.py": 70.71,
+  "tests/integration/test_api_action_metadata.py": 66.6,
+  "tests/integration/test_api_action_responses.py": 36.1,
+  "tests/integration/test_api_action_timeout.py": 68.86,
+  "tests/integration/test_api_conditional_memory.py": 15.48,
+  "tests/integration/test_api_custom_services.py": 18.77,
+  "tests/integration/test_api_get_time_response_timezone.py": 21.08,
+  "tests/integration/test_api_homeassistant.py": 65.59,
+  "tests/integration/test_api_homeassistant_action_no_subscriber.py": 18.44,
+  "tests/integration/test_api_homeassistant_binary_sensor_initial_state.py": 15.05,
+  "tests/integration/test_api_list_entities_backpressure.py": 13.88,
+  "tests/integration/test_api_message_size_batching.py": 29.98,
+  "tests/integration/test_api_reboot_timeout.py": 16.05,
+  "tests/integration/test_api_string_lambda.py": 15.31,
+  "tests/integration/test_api_vv_logging.py": 19.28,
+  "tests/integration/test_api_zero_psk_provisioning.py": 31.5,
+  "tests/integration/test_areas_and_devices.py": 24.95,
+  "tests/integration/test_automation_wait_actions.py": 20.92,
+  "tests/integration/test_automations.py": 35.19,
+  "tests/integration/test_batch_delay_zero_rapid_transitions.py": 17.99,
+  "tests/integration/test_binary_sensor_autorepeat_filter.py": 20.39,
+  "tests/integration/test_binary_sensor_invalidate_state.py": 18.41,
+  "tests/integration/test_blocking_warning_log_time_not_charged_to_next_operation.py": 24.69,
+  "tests/integration/test_build_info.py": 18.7,
+  "tests/integration/test_camera_mock.py": 16.23,
+  "tests/integration/test_climate_control_action.py": 21.14,
+  "tests/integration/test_climate_custom_modes.py": 20.74,
+  "tests/integration/test_continuation_actions.py": 16.81,
+  "tests/integration/test_cover_control_action.py": 20.34,
+  "tests/integration/test_crc8_helper.py": 9.36,
+  "tests/integration/test_device_id_in_state.py": 44.67,
+  "tests/integration/test_duplicate_entities.py": 23.58,
+  "tests/integration/test_entity_icon.py": 34.35,
+  "tests/integration/test_fan_turn_on_action.py": 24.23,
+  "tests/integration/test_fnv1_hash_object_id.py": 16.21,
+  "tests/integration/test_fnv1a_hash.py": 13.38,
+  "tests/integration/test_gpio_expander_cache.py": 13.06,
+  "tests/integration/test_host_logger_thread_safety.py": 23.66,
+  "tests/integration/test_host_mode_basic.py": 8.01,
+  "tests/integration/test_host_mode_batch_delay.py": 21.0,
+  "tests/integration/test_host_mode_climate_basic_state.py": 22.14,
+  "tests/integration/test_host_mode_climate_control.py": 19.39,
+  "tests/integration/test_host_mode_empty_string_options.py": 21.76,
+  "tests/integration/test_host_mode_entity_fields.py": 29.61,
+  "tests/integration/test_host_mode_fan_preset.py": 20.01,
+  "tests/integration/test_host_mode_many_entities.py": 39.08,
+  "tests/integration/test_host_mode_many_entities_multiple_connections.py": 23.92,
+  "tests/integration/test_host_mode_noise_encryption.py": 42.42,
+  "tests/integration/test_host_mode_reconnect.py": 3.41,
+  "tests/integration/test_host_mode_sensor.py": 22.96,
+  "tests/integration/test_host_ota.py": 29.5,
+  "tests/integration/test_host_preferences.py": 16.06,
+  "tests/integration/test_host_preferences_suspend_resume.py": 18.71,
+  "tests/integration/test_improv_serial_uart.py": 20.22,
+  "tests/integration/test_large_message_batching.py": 26.56,
+  "tests/integration/test_legacy_area.py": 22.72,
+  "tests/integration/test_legacy_climate_compat.py": 14.13,
+  "tests/integration/test_legacy_fan_compat.py": 14.33,
+  "tests/integration/test_light_automations.py": 18.81,
+  "tests/integration/test_light_binary_effect_off_phase.py": 8.38,
+  "tests/integration/test_light_calls.py": 21.88,
+  "tests/integration/test_light_constant_brightness.py": 59.45,
+  "tests/integration/test_light_control_action.py": 31.91,
+  "tests/integration/test_light_dim_relative_action.py": 14.43,
+  "tests/integration/test_light_effect_zero_brightness.py": 25.05,
+  "tests/integration/test_light_initial_state.py": 18.97,
+  "tests/integration/test_light_toggle_action.py": 17.44,
+  "tests/integration/test_lock_automations.py": 18.9,
+  "tests/integration/test_logger_buffered_recursion_guard.py": 18.2,
+  "tests/integration/test_loop_disable_enable.py": 63.35,
+  "tests/integration/test_loop_interval_decoupling.py": 17.7,
+  "tests/integration/test_loop_interval_default_not_pulled_forward.py": 21.56,
+  "tests/integration/test_micros_to_millis.py": 15.89,
+  "tests/integration/test_multi_click_trigger.py": 17.23,
+  "tests/integration/test_multi_device_preferences.py": 19.4,
+  "tests/integration/test_noise_encryption_key_protection.py": 72.59,
+  "tests/integration/test_object_id_api_verification.py": 19.22,
+  "tests/integration/test_object_id_friendly_name_no_mac_suffix.py": 16.77,
+  "tests/integration/test_object_id_no_friendly_name.py": 45.8,
+  "tests/integration/test_online_image_auto_detects_image_bmp_mime.py": 86.73,
+  "tests/integration/test_online_image_auto_detects_redirected_image_bmp_mime.py": 40.4,
+  "tests/integration/test_online_image_bmp.py": 37.24,
+  "tests/integration/test_oversized_payloads.py": 55.75,
+  "tests/integration/test_preference_key_stability.py": 25.49,
+  "tests/integration/test_runtime_stats.py": 29.81,
+  "tests/integration/test_safe_mode_loop_runs.py": 6.26,
+  "tests/integration/test_scheduler_blocking_warning.py": 37.98,
+  "tests/integration/test_scheduler_bulk_cleanup.py": 18.67,
+  "tests/integration/test_scheduler_defer_cancel.py": 18.46,
+  "tests/integration/test_scheduler_defer_cancel_regular.py": 16.34,
+  "tests/integration/test_scheduler_defer_fifo_simple.py": 18.26,
+  "tests/integration/test_scheduler_defer_stress.py": 17.74,
+  "tests/integration/test_scheduler_heap_stress.py": 3.89,
+  "tests/integration/test_scheduler_internal_id_no_collision.py": 20.01,
+  "tests/integration/test_scheduler_interval_reschedule.py": 16.29,
+  "tests/integration/test_scheduler_interval_zero_coerced.py": 16.09,
+  "tests/integration/test_scheduler_null_name.py": 14.69,
+  "tests/integration/test_scheduler_numeric_id_test.py": 17.08,
+  "tests/integration/test_scheduler_pool.py": 19.88,
+  "tests/integration/test_scheduler_rapid_cancellation.py": 4.42,
+  "tests/integration/test_scheduler_recursive_timeout.py": 4.3,
+  "tests/integration/test_scheduler_removed_item_race.py": 15.49,
+  "tests/integration/test_scheduler_self_keyed.py": 25.77,
+  "tests/integration/test_scheduler_simultaneous_callbacks.py": 14.84,
+  "tests/integration/test_scheduler_string_test.py": 15.42,
+  "tests/integration/test_script_array_params.py": 12.73,
+  "tests/integration/test_script_delay_params.py": 12.69,
+  "tests/integration/test_script_queued.py": 20.38,
+  "tests/integration/test_script_queued_idle_loop.py": 25.06,
+  "tests/integration/test_script_wait_on_boot.py": 15.67,
+  "tests/integration/test_select_stringref_trigger.py": 19.48,
+  "tests/integration/test_sensor_filters_delta.py": 27.62,
+  "tests/integration/test_sensor_filters_ring_buffer.py": 20.27,
+  "tests/integration/test_sensor_filters_sliding_window.py": 56.28,
+  "tests/integration/test_sensor_filters_value_list.py": 20.6,
+  "tests/integration/test_sensor_timeout_filter.py": 22.21,
+  "tests/integration/test_socket_wake_gate_tcp.py": 16.37,
+  "tests/integration/test_status_flags.py": 29.68,
+  "tests/integration/test_strftime_to.py": 17.42,
+  "tests/integration/test_syslog.py": 18.39,
+  "tests/integration/test_template_alarm_control_panel_many_sensors.py": 25.61,
+  "tests/integration/test_template_text_save.py": 19.16,
+  "tests/integration/test_text_command.py": 16.43,
+  "tests/integration/test_text_sensor_raw_state.py": 17.19,
+  "tests/integration/test_uart_mock_ld2410.py": 37.0,
+  "tests/integration/test_uart_mock_ld2412.py": 40.82,
+  "tests/integration/test_uart_mock_ld2420.py": 32.7,
+  "tests/integration/test_uart_mock_ld2450.py": 32.84,
+  "tests/integration/test_uart_mock_modbus.py": 548.87,
+  "tests/integration/test_udp.py": 16.67,
+  "tests/integration/test_use_address_runtime.py": 27.26,
+  "tests/integration/test_valve_control_action.py": 24.58,
+  "tests/integration/test_varint_five_byte_device_id.py": 22.5,
+  "tests/integration/test_wait_until_mid_loop_timing.py": 22.05,
+  "tests/integration/test_wait_until_on_boot.py": 10.37,
+  "tests/integration/test_wait_until_ordering.py": 18.23,
+  "tests/integration/test_wait_until_reentrant_restart.py": 19.35,
+  "tests/integration/test_wake_loop_forces_phase_b.py": 17.83,
+  "tests/integration/test_water_heater_template.py": 25.7
 }

tests/integration/state_utils.py

@@ -57,46 +57,6 @@ async def wait_for_state(
     return await asyncio.wait_for(future, timeout=timeout)
 
 
-class StateWaiter:
-    """Route one state subscription to any number of predicate waits."""
-
-    def __init__(self) -> None:
-        self._waiters: list[
-            tuple[Callable[[EntityState], bool], asyncio.Future[EntityState]]
-        ] = []
-
-    def on_state(self, state: EntityState) -> None:
-        for predicate, future in self._waiters:
-            if future.done():
-                continue
-            try:
-                matched = predicate(state)
-            except Exception as exc:  # noqa: BLE001  the wait re-raises it, the callback must not die
-                future.set_exception(exc)
-                continue
-            if matched:
-                future.set_result(state)
-
-    async def expect(
-        self,
-        predicate: Callable[[EntityState], bool],
-        timeout: float = 5.0,
-        label: str | None = None,
-    ) -> EntityState:
-        """Wait for the next state matching ``predicate``; states seen before this call do not count."""
-        entry = (predicate, asyncio.get_running_loop().create_future())
-        self._waiters.append(entry)
-        try:
-            async with asyncio.timeout(timeout):
-                return await entry[1]
-        except TimeoutError:
-            raise TimeoutError(
-                f"no state matched {label or predicate} within {timeout}s"
-            ) from None
-        finally:
-            self._waiters.remove(entry)
-
-
 def find_entity[T: EntityInfo](
     entities: list[EntityInfo],
     object_id_substring: str,

tests/integration/test_api_empty_message_roundtrip.py

@@ -1,37 +0,0 @@
-"""Messages without fields go through the shared ProtoMessage entry points on both directions."""
-
-from __future__ import annotations
-
-from aioesphomeapi import api_pb2
-import pytest
-
-from .raw_api_client import MESSAGE_TYPE_OF, RawApiClient
-from .types import RunCompiledFunction
-
-
-@pytest.mark.asyncio
-async def test_api_empty_message_roundtrip(
-    yaml_config: str,
-    run_compiled: RunCompiledFunction,
-    unused_tcp_port: int,
-) -> None:
-    async with run_compiled(yaml_config), RawApiClient(unused_tcp_port) as client:
-        await client.connect()
-
-        # Field free request and reply on the plain send path
-        await client.send_message(api_pb2.PingRequest())
-        await client.read_until_frame(MESSAGE_TYPE_OF[api_pb2.PingResponse])
-
-        # Field free request answered by a message with fields, and a list that ends with
-        # the field free ListEntitiesDoneResponse through the batching path
-        await client.send_message(api_pb2.DeviceInfoRequest())
-        await client.read_until_frame(MESSAGE_TYPE_OF[api_pb2.DeviceInfoResponse])
-        await client.send_message(api_pb2.ListEntitiesRequest())
-        await client.read_until_frame(MESSAGE_TYPE_OF[api_pb2.ListEntitiesDoneResponse])
-        assert (
-            client.frame_counts[MESSAGE_TYPE_OF[api_pb2.ListEntitiesSwitchResponse]]
-            == 1
-        )
-
-        await client.send_message(api_pb2.DisconnectRequest())
-        await client.read_until_frame(MESSAGE_TYPE_OF[api_pb2.DisconnectResponse])

tests/integration/test_api_encode_boundaries.py

@@ -1,78 +0,0 @@
-"""Encode paths at their branch boundaries: zero skipped float, fixed32 state, negative int32,
-length prefixes of two varint bytes and two byte field tags."""
-
-from __future__ import annotations
-
-import asyncio
-
-from aioesphomeapi import (
-    NumberState,
-    SelectInfo,
-    SensorInfo,
-    SensorState,
-    TextSensorState,
-)
-import pytest
-
-from .state_utils import InitialStateHelper, StateWaiter, require_entity
-from .types import APIClientConnectedFactory, RunCompiledFunction
-
-LONG_OPTION = (
-    "option-with-a-name-long-enough-that-its-length-prefix-needs-two-varint-bytes-"
-    "when-the-list-entities-response-is-encoded-xxxxxxxxxx"
-)
-
-
-@pytest.mark.asyncio
-async def test_api_encode_boundaries(
-    yaml_config: str,
-    run_compiled: RunCompiledFunction,
-    api_client_connected: APIClientConnectedFactory,
-) -> None:
-    async with run_compiled(yaml_config), api_client_connected() as client:
-        device_info, (entities, _) = await asyncio.gather(
-            client.device_info(), client.list_entities_services()
-        )
-        assert device_info.suggested_area == "Kitchen"
-
-        sensor = require_entity(entities, "zero_then_value", SensorInfo)
-        assert sensor.accuracy_decimals == -2
-        select = require_entity(entities, "long_option_select", SelectInfo)
-        assert len(LONG_OPTION) >= 128
-        assert select.options == ["short", LONG_OPTION]
-        text = require_entity(entities, "long_text")
-        number = require_entity(entities, "negative_number")
-        button = require_entity(entities, "publish_values")
-
-        initial = InitialStateHelper(entities)
-        waiter = StateWaiter()
-        client.subscribe_states(initial.on_state_wrapper(waiter.on_state))
-        await initial.wait_for_initial_states()
-
-        # A float of exactly zero is skipped on the wire and must still read as 0.0, not missing
-        first = initial.initial_states[sensor.key]
-        assert isinstance(first, SensorState)
-        assert first.state == 0.0 and not first.missing_state
-        first_number = initial.initial_states[number.key]
-        assert isinstance(first_number, NumberState)
-        assert first_number.state == -123.5
-
-        client.button_command(button.key)
-        await asyncio.gather(
-            waiter.expect(
-                lambda s: (
-                    isinstance(s, SensorState)
-                    and s.key == sensor.key
-                    and s.state == 12.5
-                ),
-                label="sensor 12.5",
-            ),
-            waiter.expect(
-                lambda s: (
-                    isinstance(s, TextSensorState)
-                    and s.key == text.key
-                    and s.state == "y" * 200
-                ),
-                label="text 200 x y",
-            ),
-        )

tests/integration/test_host_ota.py

@@ -9,12 +9,14 @@ from __future__ import annotations
 
 import asyncio
 import base64
-from collections.abc import Generator
+from collections.abc import Callable, Generator
 from contextlib import contextmanager
 from dataclasses import dataclass
 import functools
 from pathlib import Path
 import socket
+from types import SimpleNamespace
+import zlib
 
 import pytest
 
@@ -122,6 +124,7 @@ class _Device:
     binary_path: Path
     proc: asyncio.subprocess.Process | None = None
     reboots: int = 0
+    inflates: int = 0
 
     def __post_init__(self) -> None:
         self._rebooted = asyncio.Event()
@@ -130,6 +133,8 @@ class _Device:
         if "Rebooting safely" in line:
             self.reboots += 1
             self._rebooted.set()
+        if "Inflated " in line and " bytes from " in line:
+            self.inflates += 1
 
     async def wait_reboot(self, count: int, timeout: float = 10.0) -> None:
         async with asyncio.timeout(timeout):
@@ -204,6 +209,81 @@ async def test_host_ota_self_update(
         await dev.ota(None, None, "second OTA failed -- listener leaked across execv")
 
 
+@pytest.mark.asyncio
+async def test_host_ota_deflate(
+    yaml_config: str,
+    write_yaml_config: ConfigWriter,
+    compile_esphome: CompileFunction,
+    reserved_tcp_port: tuple[int, socket.socket],
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    """Deflate is negotiated by default, an old client gets an uncompressed
+    upload, and a corrupt stream is rejected without taking the device down."""
+    dev = _Device(
+        *await _build(
+            yaml_config, write_yaml_config, compile_esphome, reserved_tcp_port
+        )
+    )
+    errors: list[str] = []
+
+    def on_log(line: str) -> None:
+        # A corrupt stream is caught by the decoder, by the size check or by
+        # the MD5 at the end, depending on where the damage lands
+        if any(
+            text in line
+            for text in ("Inflate err", "Inflate overrun", "End update err")
+        ):
+            errors.append(line)
+        dev.on_log(line)
+
+    real_compress = zlib.compress
+
+    def corrupt_compress(data: bytes, *args: object, **kwargs: object) -> bytes:
+        out = bytearray(real_compress(data, *args, **kwargs))
+        out[len(out) // 2] ^= 0x55
+        return bytes(out)
+
+    def overlong_compress(data: bytes, *args: object, **kwargs: object) -> bytes:
+        """A stream that inflates past the size the client announced."""
+        return real_compress(data + bytes(8192), *args, **kwargs)
+
+    def patch_compress(func: Callable[..., bytes]) -> None:
+        monkeypatch.setattr(espota2, "zlib", SimpleNamespace(compress=func))
+
+    async with run_binary(dev.binary_path, line_callback=on_log) as (proc, _lines):
+        dev.proc = proc
+        await _wait_for_port(LOCALHOST, dev.api_port, PORT_WAIT_TIMEOUT)
+
+        # Default: the host backend cannot store gzip, so the CLI sends deflate
+        await dev.ota(None, None, "deflate upload failed")
+        assert dev.inflates == 1, "device did not inflate the upload"
+
+        # A client that does not offer deflate is served uncompressed
+        monkeypatch.setattr(espota2, "CLIENT_FEATURE_SUPPORTS_DEFLATE", 0)
+        await dev.ota(None, None, "uncompressed upload failed")
+        assert dev.inflates == 1, "device inflated without a client offer"
+        monkeypatch.undo()
+
+        # A corrupt stream fails the upload and leaves the device running
+        patch_compress(corrupt_compress)
+        await dev.refused_ota(None, None, "corrupt deflate stream was accepted")
+        monkeypatch.undo()
+        assert errors, "device did not report the corrupt stream"
+
+        # So does a stream that inflates past the announced image size
+        errors.clear()
+        patch_compress(overlong_compress)
+        await dev.refused_ota(None, None, "overlong deflate stream was accepted")
+        monkeypatch.undo()
+        assert any("Inflate overrun" in line for line in errors), (
+            "device wrote past the announced size"
+        )
+
+        # and it still takes a good upload afterwards
+        await dev.ota(None, None, "upload after a rejected stream failed")
+        assert dev.inflates == 2
+
+
 @pytest.mark.asyncio
 async def test_host_ota_encrypted(
     yaml_config: str,

tests/script/test_setup.py

@@ -1,562 +0,0 @@
-"""Tests for script/setup.py."""
-
-import importlib.util
-import os
-from pathlib import Path, PurePosixPath, PureWindowsPath
-import runpy
-import sys
-from types import ModuleType
-from unittest.mock import Mock, call, patch
-
-import pytest
-
-_SCRIPT = Path(__file__).parents[2] / "script" / "setup.py"
-
-
-def _load_module() -> ModuleType:
-    spec = importlib.util.spec_from_file_location("script_setup", _SCRIPT)
-    module = importlib.util.module_from_spec(spec)
-    spec.loader.exec_module(module)
-    return module
-
-
-@pytest.fixture
-def script_setup() -> ModuleType:
-    """Fresh import of script/setup.py, isolated from other tests."""
-    return _load_module()
-
-
-# --- bin_dir / venv_python / activate_hint -----------------------------------
-
-
-def test_bin_dir_matches_host_layout(script_setup: ModuleType, tmp_path: Path) -> None:
-    """The venv scheme resolves to Scripts on Windows and bin everywhere else."""
-    expected = "Scripts" if os.name == "nt" else "bin"
-    assert script_setup.bin_dir(tmp_path) == tmp_path / expected
-
-
-# Both flavours are exercised on every host. Pure paths are used because a real
-# Path refuses to change flavour: PosixPath cannot be built on Windows, and
-# WindowsPath cannot be built on Unix.
-
-
-def test_venv_python_posix(script_setup: ModuleType, tmp_path: Path) -> None:
-    with (
-        patch.object(
-            script_setup, "bin_dir", return_value=PurePosixPath("/x/venv/bin")
-        ),
-        patch.object(script_setup.os, "name", "posix"),
-    ):
-        result = script_setup.venv_python(tmp_path)
-    assert result == PurePosixPath("/x/venv/bin/python")
-
-
-def test_venv_python_nt(script_setup: ModuleType, tmp_path: Path) -> None:
-    with (
-        patch.object(
-            script_setup, "bin_dir", return_value=PureWindowsPath(r"C:\x\venv\Scripts")
-        ),
-        patch.object(script_setup.os, "name", "nt"),
-    ):
-        result = script_setup.venv_python(tmp_path)
-    assert result == PureWindowsPath(r"C:\x\venv\Scripts\python.exe")
-
-
-def test_activate_hint_posix(script_setup: ModuleType) -> None:
-    with (
-        patch.object(script_setup, "ROOT", PurePosixPath("/x")),
-        patch.object(
-            script_setup, "bin_dir", return_value=PurePosixPath("/x/venv/bin")
-        ),
-        patch.object(script_setup.os, "name", "posix"),
-    ):
-        hint = script_setup.activate_hint()
-    assert hint == "source venv/bin/activate"
-
-
-def test_activate_hint_nt(script_setup: ModuleType) -> None:
-    with (
-        patch.object(script_setup, "ROOT", PureWindowsPath(r"C:\x")),
-        patch.object(
-            script_setup, "bin_dir", return_value=PureWindowsPath(r"C:\x\venv\Scripts")
-        ),
-        patch.object(script_setup.os, "name", "nt"),
-    ):
-        hint = script_setup.activate_hint()
-    # The nt branch returns str(activate) as-is, skipping the "source " prefix.
-    assert hint == r"venv\Scripts\activate"
-
-
-# --- run -----------------------------------------------------------------
-
-
-def test_run_success(script_setup: ModuleType) -> None:
-    with patch.object(
-        script_setup.subprocess, "run", return_value=Mock(returncode=0)
-    ) as mock_run:
-        script_setup.run(["echo", "hi"])
-    mock_run.assert_called_once_with(
-        ["echo", "hi"], cwd=script_setup.ROOT, env=None, check=False
-    )
-
-
-def test_run_failure_raises_system_exit_with_code(
-    script_setup: ModuleType, capsys: pytest.CaptureFixture[str]
-) -> None:
-    with (
-        patch.object(script_setup.subprocess, "run", return_value=Mock(returncode=7)),
-        pytest.raises(SystemExit) as excinfo,
-    ):
-        script_setup.run(["false"])
-    assert excinfo.value.code == 7
-    assert "Failed with exit code 7: false" in capsys.readouterr().err
-
-
-# --- git_output ------------------------------------------------------------
-
-
-def test_git_output_success_strips_stdout(script_setup: ModuleType) -> None:
-    with patch.object(
-        script_setup.subprocess,
-        "run",
-        return_value=Mock(returncode=0, stdout="  /repo/.git \n"),
-    ) as mock_run:
-        result = script_setup.git_output("rev-parse", "--absolute-git-dir")
-    assert result == "/repo/.git"
-    mock_run.assert_called_once_with(
-        ["git", "rev-parse", "--absolute-git-dir"],
-        cwd=script_setup.ROOT,
-        capture_output=True,
-        text=True,
-        check=False,
-    )
-
-
-def test_git_output_nonzero_returncode_is_empty(script_setup: ModuleType) -> None:
-    with patch.object(
-        script_setup.subprocess,
-        "run",
-        return_value=Mock(returncode=1, stdout="whatever"),
-    ):
-        assert script_setup.git_output("status") == ""
-
-
-def test_git_output_oserror_is_empty(script_setup: ModuleType) -> None:
-    with patch.object(script_setup.subprocess, "run", side_effect=OSError("no git")):
-        assert script_setup.git_output("status") == ""
-
-
-# --- create_venv -----------------------------------------------------------
-
-
-def test_create_venv_uses_uv_when_present(
-    script_setup: ModuleType, tmp_path: Path
-) -> None:
-    venv = tmp_path / "venv"
-    with (
-        patch.object(script_setup.shutil, "which", return_value="/usr/bin/uv"),
-        patch.object(
-            script_setup.subprocess, "run", return_value=Mock(returncode=0)
-        ) as mock_run,
-    ):
-        script_setup.create_venv(venv)
-    mock_run.assert_called_once_with(
-        ["/usr/bin/uv", "venv", "--clear", "--seed", str(venv)],
-        cwd=script_setup.ROOT,
-        env=None,
-        check=False,
-    )
-
-
-def test_create_venv_falls_back_to_venv_module(
-    script_setup: ModuleType, tmp_path: Path
-) -> None:
-    venv = tmp_path / "venv"
-    with (
-        patch.object(script_setup.shutil, "which", return_value=None),
-        patch.object(
-            script_setup.subprocess, "run", return_value=Mock(returncode=0)
-        ) as mock_run,
-    ):
-        script_setup.create_venv(venv)
-    mock_run.assert_called_once_with(
-        [sys.executable, "-m", "venv", "--clear", str(venv)],
-        cwd=script_setup.ROOT,
-        env=None,
-        check=False,
-    )
-
-
-# --- venv_environment --------------------------------------------------------
-
-
-def test_venv_environment_sets_virtual_env_and_prepends_path(
-    script_setup: ModuleType, tmp_path: Path, monkeypatch: pytest.MonkeyPatch
-) -> None:
-    venv = tmp_path / "venv"
-    monkeypatch.setenv("PYTHONHOME", "/somewhere")
-    monkeypatch.setenv("PATH", "/usr/bin:/bin")
-    env = script_setup.venv_environment(venv)
-    assert env["VIRTUAL_ENV"] == str(venv)
-    assert "PYTHONHOME" not in env
-    expected_prefix = str(script_setup.bin_dir(venv)) + os.pathsep
-    assert env["PATH"] == expected_prefix + "/usr/bin:/bin"
-
-
-def test_venv_environment_path_fallback_when_unset(
-    script_setup: ModuleType, tmp_path: Path, monkeypatch: pytest.MonkeyPatch
-) -> None:
-    venv = tmp_path / "venv"
-    monkeypatch.delenv("PATH", raising=False)
-    env = script_setup.venv_environment(venv)
-    # No trailing separator: an empty PATH entry means "search the cwd".
-    assert env["PATH"] == str(script_setup.bin_dir(venv))
-
-
-# --- find_uv -----------------------------------------------------------------
-
-
-def test_find_uv_found_immediately(script_setup: ModuleType, tmp_path: Path) -> None:
-    venv = tmp_path / "venv"
-    env = {"PATH": "/usr/bin"}
-    with (
-        patch.object(script_setup.shutil, "which", return_value="/usr/bin/uv"),
-        patch.object(script_setup.subprocess, "run") as mock_run,
-    ):
-        result = script_setup.find_uv(venv, env)
-    assert result == "/usr/bin/uv"
-    mock_run.assert_not_called()
-
-
-def test_find_uv_installed_then_found(script_setup: ModuleType, tmp_path: Path) -> None:
-    venv = tmp_path / "venv"
-    env = {"PATH": "/usr/bin"}
-    with (
-        patch.object(script_setup.shutil, "which", side_effect=[None, "/usr/bin/uv"]),
-        patch.object(
-            script_setup.subprocess, "run", return_value=Mock(returncode=0)
-        ) as mock_run,
-    ):
-        result = script_setup.find_uv(venv, env)
-    assert result == "/usr/bin/uv"
-    mock_run.assert_called_once_with(
-        [str(script_setup.venv_python(venv)), "-m", "pip", "install", "uv"],
-        cwd=script_setup.ROOT,
-        env=env,
-        check=False,
-    )
-
-
-def test_find_uv_still_missing_raises_system_exit(
-    script_setup: ModuleType, tmp_path: Path
-) -> None:
-    venv = tmp_path / "venv"
-    env = {"PATH": "/usr/bin"}
-    with (
-        patch.object(script_setup.shutil, "which", side_effect=[None, None]),
-        patch.object(script_setup.subprocess, "run", return_value=Mock(returncode=0)),
-        pytest.raises(SystemExit, match="uv could not be installed"),
-    ):
-        script_setup.find_uv(venv, env)
-
-
-# --- install_dependencies -----------------------------------------------------
-
-
-def test_install_dependencies_installs_setuptools_then_project(
-    script_setup: ModuleType, tmp_path: Path
-) -> None:
-    venv = tmp_path / "venv"
-    env = {"PATH": "/usr/bin"}
-    with (
-        patch.object(script_setup.shutil, "which", return_value="/usr/bin/uv"),
-        patch.object(
-            script_setup.subprocess, "run", return_value=Mock(returncode=0)
-        ) as mock_run,
-    ):
-        script_setup.install_dependencies(venv, env)
-    assert mock_run.call_args_list == [
-        call(
-            ["/usr/bin/uv", "pip", "install", "setuptools", "wheel"],
-            cwd=script_setup.ROOT,
-            env=env,
-            check=False,
-        ),
-        call(
-            [
-                "/usr/bin/uv",
-                "pip",
-                "install",
-                "-e",
-                ".[dev,test]",
-                "--config-settings",
-                "editable_mode=compat",
-            ],
-            cwd=script_setup.ROOT,
-            env=env,
-            check=False,
-        ),
-    ]
-
-
-# --- install_git_hooks ---------------------------------------------------------
-
-
-def _fake_git_output(git_dir: str, common_dir: str):
-    def _run(*args: str) -> str:
-        if "--absolute-git-dir" in args:
-            return git_dir
-        return common_dir
-
-    return _run
-
-
-def test_install_git_hooks_returns_early_when_git_dir_empty(
-    script_setup: ModuleType,
-) -> None:
-    env = {"PATH": "/usr/bin"}
-    with (
-        patch.object(
-            script_setup, "git_output", side_effect=_fake_git_output("", "/repo/.git")
-        ),
-        patch.object(script_setup.subprocess, "run") as mock_run,
-    ):
-        script_setup.install_git_hooks(env)
-    mock_run.assert_not_called()
-
-
-def test_install_git_hooks_returns_early_when_common_dir_empty(
-    script_setup: ModuleType,
-) -> None:
-    env = {"PATH": "/usr/bin"}
-    with (
-        patch.object(
-            script_setup, "git_output", side_effect=_fake_git_output("/repo/.git", "")
-        ),
-        patch.object(script_setup.subprocess, "run") as mock_run,
-    ):
-        script_setup.install_git_hooks(env)
-    mock_run.assert_not_called()
-
-
-def test_install_git_hooks_returns_early_for_worktree(
-    script_setup: ModuleType,
-) -> None:
-    """A worktree's git-dir differs from the shared common-dir."""
-    env = {"PATH": "/usr/bin"}
-    with (
-        patch.object(
-            script_setup,
-            "git_output",
-            side_effect=_fake_git_output("/repo/.git/worktrees/wt", "/repo/.git"),
-        ),
-        patch.object(script_setup.subprocess, "run") as mock_run,
-    ):
-        script_setup.install_git_hooks(env)
-    mock_run.assert_not_called()
-
-
-def test_install_git_hooks_missing_prek_raises_system_exit(
-    script_setup: ModuleType,
-) -> None:
-    env = {"PATH": "/usr/bin"}
-    with (
-        patch.object(
-            script_setup,
-            "git_output",
-            side_effect=_fake_git_output("/repo/.git", "/repo/.git"),
-        ),
-        patch.object(script_setup.shutil, "which", return_value=None),
-        patch.object(script_setup.subprocess, "run") as mock_run,
-        pytest.raises(SystemExit, match="prek was not installed"),
-    ):
-        script_setup.install_git_hooks(env)
-    mock_run.assert_not_called()
-
-
-def test_install_git_hooks_happy_path_installs_hook(
-    script_setup: ModuleType, tmp_path: Path
-) -> None:
-    env = {"PATH": "/usr/bin"}
-    common_dir = tmp_path / "repo" / ".git"
-    hooks_dir = common_dir / "hooks"
-    hooks_dir.mkdir(parents=True)
-    source_hook = tmp_path / "post-checkout"
-    source_hook.write_text("#!/bin/sh\necho post-checkout\n")
-
-    with (
-        patch.object(script_setup, "POST_CHECKOUT_HOOK", source_hook),
-        patch.object(
-            script_setup,
-            "git_output",
-            side_effect=_fake_git_output(str(common_dir), str(common_dir)),
-        ),
-        patch.object(script_setup.shutil, "which", return_value="/usr/bin/prek"),
-        patch.object(
-            script_setup.subprocess, "run", return_value=Mock(returncode=0)
-        ) as mock_run,
-    ):
-        script_setup.install_git_hooks(env)
-
-    mock_run.assert_called_once_with(
-        ["/usr/bin/prek", "install", "--overwrite"],
-        cwd=script_setup.ROOT,
-        env=env,
-        check=False,
-    )
-    installed = hooks_dir / "post-checkout"
-    assert installed.read_text() == source_hook.read_text()
-    if os.name != "nt":
-        # Windows has no POSIX permission bits for chmod to set.
-        assert (installed.stat().st_mode & 0o777) == 0o755
-
-
-def test_install_git_hooks_skips_copy_when_hooks_dir_missing(
-    script_setup: ModuleType, tmp_path: Path
-) -> None:
-    """The prek install still runs when the hooks directory does not exist."""
-    env = {"PATH": "/usr/bin"}
-    common_dir = tmp_path / "repo" / ".git"
-    common_dir.mkdir(parents=True)  # no "hooks" subdirectory created
-
-    with (
-        patch.object(
-            script_setup,
-            "git_output",
-            side_effect=_fake_git_output(str(common_dir), str(common_dir)),
-        ),
-        patch.object(script_setup.shutil, "which", return_value="/usr/bin/prek"),
-        patch.object(
-            script_setup.subprocess, "run", return_value=Mock(returncode=0)
-        ) as mock_run,
-    ):
-        script_setup.install_git_hooks(env)
-
-    mock_run.assert_called_once()
-    assert not (common_dir / "hooks").exists()
-
-
-# --- report ------------------------------------------------------------------
-
-
-def test_report_active_state(
-    script_setup: ModuleType, capsys: pytest.CaptureFixture
-) -> None:
-    venv = Path("/opt/esphome-venv")
-    script_setup.report(script_setup.VENV_ACTIVE, venv)
-    out = capsys.readouterr().out
-    assert "Dependencies installed into the active virtual environment:" in out
-    assert str(venv) in out
-    assert "is already active in this shell" in out
-
-
-def test_report_reused_state(
-    script_setup: ModuleType, capsys: pytest.CaptureFixture
-) -> None:
-    script_setup.report(script_setup.VENV_REUSED, script_setup.DEFAULT_VENV)
-    out = capsys.readouterr().out
-    assert "Dependencies updated in the existing ./venv" in out
-
-
-def test_report_created_state(
-    script_setup: ModuleType, capsys: pytest.CaptureFixture
-) -> None:
-    script_setup.report(script_setup.VENV_CREATED, script_setup.DEFAULT_VENV)
-    out = capsys.readouterr().out
-    assert "Virtual environment created at ./venv" in out
-
-
-# --- main --------------------------------------------------------------------
-
-
-def test_main_raises_system_exit_when_python_too_old(
-    script_setup: ModuleType,
-) -> None:
-    with (
-        patch.object(script_setup.sys, "version_info", (3, 11, 5)),
-        pytest.raises(SystemExit, match="ESPHome needs Python 3.12"),
-    ):
-        script_setup.main()
-
-
-def test_main_uses_active_virtual_env(
-    script_setup: ModuleType, tmp_path: Path, monkeypatch: pytest.MonkeyPatch
-) -> None:
-    active_venv = tmp_path / "active-venv"
-    monkeypatch.setenv("VIRTUAL_ENV", str(active_venv))
-    with (
-        patch.object(script_setup, "ROOT", tmp_path),
-        patch.object(script_setup, "create_venv") as mock_create_venv,
-        patch.object(script_setup, "install_dependencies") as mock_install_deps,
-        patch.object(script_setup, "install_git_hooks") as mock_install_hooks,
-        patch.object(script_setup, "report") as mock_report,
-    ):
-        script_setup.main()
-    mock_create_venv.assert_not_called()
-    mock_install_deps.assert_called_once()
-    mock_install_hooks.assert_called_once()
-    mock_report.assert_called_once_with(script_setup.VENV_ACTIVE, active_venv)
-    assert (tmp_path / ".temp").is_dir()
-
-
-def test_main_reuses_existing_venv(
-    script_setup: ModuleType, tmp_path: Path, monkeypatch: pytest.MonkeyPatch
-) -> None:
-    monkeypatch.delenv("VIRTUAL_ENV", raising=False)
-    default_venv = tmp_path / "venv"
-    python_path = script_setup.venv_python(default_venv)
-    python_path.parent.mkdir(parents=True)
-    python_path.touch()
-
-    with (
-        patch.object(script_setup, "ROOT", tmp_path),
-        patch.object(script_setup, "DEFAULT_VENV", default_venv),
-        patch.object(script_setup, "create_venv") as mock_create_venv,
-        patch.object(script_setup, "install_dependencies") as mock_install_deps,
-        patch.object(script_setup, "install_git_hooks") as mock_install_hooks,
-        patch.object(script_setup, "report") as mock_report,
-    ):
-        script_setup.main()
-    mock_create_venv.assert_not_called()
-    mock_install_deps.assert_called_once()
-    mock_install_hooks.assert_called_once()
-    mock_report.assert_called_once_with(script_setup.VENV_REUSED, default_venv)
-    assert (tmp_path / ".temp").is_dir()
-
-
-def test_main_creates_new_venv(
-    script_setup: ModuleType, tmp_path: Path, monkeypatch: pytest.MonkeyPatch
-) -> None:
-    monkeypatch.delenv("VIRTUAL_ENV", raising=False)
-    default_venv = tmp_path / "venv"  # does not exist yet
-
-    with (
-        patch.object(script_setup, "ROOT", tmp_path),
-        patch.object(script_setup, "DEFAULT_VENV", default_venv),
-        patch.object(script_setup, "create_venv") as mock_create_venv,
-        patch.object(script_setup, "install_dependencies") as mock_install_deps,
-        patch.object(script_setup, "install_git_hooks") as mock_install_hooks,
-        patch.object(script_setup, "report") as mock_report,
-    ):
-        script_setup.main()
-    mock_create_venv.assert_called_once_with(default_venv)
-    mock_install_deps.assert_called_once()
-    mock_install_hooks.assert_called_once()
-    mock_report.assert_called_once_with(script_setup.VENV_CREATED, default_venv)
-    assert (tmp_path / ".temp").is_dir()
-
-
-def test_run_as_script_calls_main(tmp_path: Path) -> None:
-    """The __main__ guard runs the whole flow, with every side effect stubbed."""
-    completed = Mock(returncode=0, stdout="")
-    with (
-        patch("subprocess.run", return_value=completed) as mock_run,
-        patch("shutil.which", return_value="/usr/bin/uv"),
-        patch("pathlib.Path.mkdir") as mock_mkdir,
-        patch.dict(os.environ, {"VIRTUAL_ENV": str(tmp_path / "env")}),
-    ):
-        runpy.run_path(str(_SCRIPT), run_name="__main__")
-
-    # The dependency install ran, and git reported no hooks directory to touch.
-    assert mock_run.called
-    mock_mkdir.assert_called_once_with(exist_ok=True)

tests/unit_tests/components/api/test_api_proto.py

@@ -194,17 +194,17 @@ def test_superseded_device_info_fields_still_declared_in_header() -> None:
 
 def test_superseded_device_info_fields_still_encoded_and_sized() -> None:
     """Each superseded field must still be touched by DeviceInfoResponse's
-    generated encode_msg() and calc_size_msg(), i.e. it is still put on the wire.
+    generated encode() and calculate_size(), i.e. it is still put on the wire.
     """
-    encode_body = _extract_function_body(CPP_TEXT, "DeviceInfoResponse::encode_msg")
-    size_body = _extract_function_body(CPP_TEXT, "DeviceInfoResponse::calc_size_msg")
+    encode_body = _extract_function_body(CPP_TEXT, "DeviceInfoResponse::encode")
+    size_body = _extract_function_body(CPP_TEXT, "DeviceInfoResponse::calculate_size")
     for field_name in SUPERSEDED_FIELDS:
-        assert f"msg.{field_name}" in encode_body, (
-            f"DeviceInfoResponse::encode_msg() no longer references {field_name}. "
+        assert f"this->{field_name}" in encode_body, (
+            f"DeviceInfoResponse::encode() no longer references {field_name}. "
             f"{DEPRECATED_FIELD_TRAP}"
         )
-        assert f"msg.{field_name}" in size_body, (
-            f"DeviceInfoResponse::calc_size_msg() no longer references "
+        assert f"this->{field_name}" in size_body, (
+            f"DeviceInfoResponse::calculate_size() no longer references "
             f"{field_name}. {DEPRECATED_FIELD_TRAP}"
         )
 
@@ -380,13 +380,3 @@ def test_api_version_minor_is_at_least_15() -> None:
         "clients to see api_version >= 1.15 in HelloResponse before they will "
         "ever request it."
     )
-
-
-def test_generated_encode_calls_keep_the_cursor() -> None:
-    """No generated ProtoEncode call may drop the returned cursor."""
-    dropped = [
-        line
-        for line in CPP_TEXT.splitlines()
-        if "ProtoEncode::" in line and "pos = ProtoEncode::" not in line
-    ]
-    assert not dropped, dropped[:5]

tests/unit_tests/components/api/test_api_protobuf_generator.py

@@ -15,11 +15,9 @@ import pytest
 
 sys.path.insert(0, str(Path(__file__).parents[4] / "script" / "api_protobuf"))
 
-import aioesphomeapi.api_options_pb2 as pb  # noqa: E402
 from api_protobuf import (  # noqa: E402
     MAX_MESSAGE_ID,
     _make_ifdef_line,
-    create_field_type_info,
     get_varint64_ifdef,
     validate_message_id,
 )
@@ -45,14 +43,7 @@ UINT64 = descriptor_pb2.FieldDescriptorProto.TYPE_UINT64
 INT64 = descriptor_pb2.FieldDescriptorProto.TYPE_INT64
 SINT64 = descriptor_pb2.FieldDescriptorProto.TYPE_SINT64
 UINT32 = descriptor_pb2.FieldDescriptorProto.TYPE_UINT32
-INT32 = descriptor_pb2.FieldDescriptorProto.TYPE_INT32
-SINT32 = descriptor_pb2.FieldDescriptorProto.TYPE_SINT32
 FIXED64 = descriptor_pb2.FieldDescriptorProto.TYPE_FIXED64
-FIXED32 = descriptor_pb2.FieldDescriptorProto.TYPE_FIXED32
-FLOAT = descriptor_pb2.FieldDescriptorProto.TYPE_FLOAT
-BOOL = descriptor_pb2.FieldDescriptorProto.TYPE_BOOL
-STRING = descriptor_pb2.FieldDescriptorProto.TYPE_STRING
-BYTES = descriptor_pb2.FieldDescriptorProto.TYPE_BYTES
 
 
 def test_no_varint64_fields() -> None:
@@ -116,69 +107,3 @@ def test_message_id_at_maximum_is_accepted() -> None:
 def test_message_id_above_maximum_is_rejected() -> None:
     with pytest.raises(ValueError, match="exceeds the plaintext"):
         validate_message_id(MAX_MESSAGE_ID + 1, "TooBigMessage")
-
-
-def _field(
-    field_type: int, number: int = 1, *, force: bool = False, repeated: bool = False
-) -> descriptor_pb2.FieldDescriptorProto:
-    field = descriptor_pb2.FieldDescriptorProto(
-        name="value", number=number, type=field_type
-    )
-    if repeated:
-        field.label = descriptor_pb2.FieldDescriptorProto.LABEL_REPEATED
-    if force:
-        field.options.Extensions[pb.force] = True
-    return field
-
-
-def _encode_field(
-    field_type: int, number: int = 1, force: bool = False, repeated: bool = False
-) -> str:
-    """Return the encode statement the generator emits for one encode-only field."""
-    field = _field(field_type, number, force=force, repeated=repeated)
-    return create_field_type_info(
-        field, needs_decode=False, needs_encode=True
-    ).encode_content
-
-
-SCALAR_TYPES = [
-    BOOL,
-    UINT32,
-    INT32,
-    UINT64,
-    INT64,
-    SINT32,
-    FLOAT,
-    FIXED32,
-    STRING,
-    BYTES,
-]
-
-
-@pytest.mark.parametrize("field_type", SCALAR_TYPES)
-def test_forced_fields_use_the_force_overload_or_raw_writes(field_type: int) -> None:
-    content = _encode_field(field_type, force=True)
-    assert (
-        "_force(" in content
-        or "write_raw_byte(" in content
-        or "write_tag_and_fixed32(" in content
-    ), content
-
-
-@pytest.mark.parametrize("field_type", [FLOAT, FIXED32])
-def test_single_byte_tag_fixed32_shares_the_outlined_writer(field_type: int) -> None:
-    unconditional = _encode_field(field_type, force=True)
-    assert unconditional.count("write_tag_and_fixed32(pos, 13,") == 1, unconditional
-    guarded = _encode_field(field_type, force=False)
-    assert guarded.startswith("if ("), guarded
-    assert "[[likely]]" in guarded
-    assert "write_tag_and_fixed32(pos, 13," in guarded
-
-
-@pytest.mark.parametrize("field_type", [FLOAT, FIXED32])
-def test_multi_byte_tag_fixed32_falls_back_to_the_generic_helper(
-    field_type: int,
-) -> None:
-    content = _encode_field(field_type, number=16)
-    assert "write_tag_and_fixed32" not in content, content
-    assert content.startswith("pos = ProtoEncode::encode_"), content

tests/unit_tests/test_config_validation.py

@@ -1394,35 +1394,6 @@ def test_entity_metadata_visibility_hints() -> None:
     assert web["web_server"].visibility is advanced
 
 
-def test_with_visibility_remarks_keys() -> None:
-    """``with_visibility`` re-marks the named keys, preserving each field's
-    default and validator, without touching the other keys or the input schema.
-    """
-    base = cv.Schema(
-        {
-            cv.Optional("a", default=7): cv.int_,
-            cv.Optional("b", visibility=cv.Visibility.ADVANCED): cv.string,
-        }
-    )
-    promoted = cv.with_visibility(base, cv.Visibility.UI, "a")
-
-    pm = {str(k): k for k in promoted.schema}
-    assert pm["a"].visibility is cv.Visibility.UI  # re-marked
-    assert pm["a"].default() == 7  # default preserved
-    assert pm["b"].visibility is cv.Visibility.ADVANCED  # sibling untouched
-    assert promoted({}) == {"a": 7}  # validator/default still applied
-
-    # The input schema is left untouched (no shared-marker mutation).
-    assert {str(k): k for k in base.schema}["a"].visibility is None
-
-
-def test_with_visibility_unknown_key_raises() -> None:
-    """A key not present in the schema is a typo — fail at build time."""
-    base = cv.Schema({cv.Optional("a"): cv.int_})
-    with pytest.raises(ValueError, match="not in schema"):
-        cv.with_visibility(base, cv.Visibility.UI, "nope")
-
-
 def _wrap_str(value: str) -> ESPHomeDataBase:
     """Wrap a raw string as an ESPHomeDataBase, mimicking a YAML-loaded value."""
     return make_data_base(value)

tests/unit_tests/test_espota2.py

@@ -12,6 +12,7 @@ from pathlib import Path
 import socket
 import struct
 from unittest.mock import Mock, call, patch
+import zlib
 
 import pytest
 from pytest import CaptureFixture
@@ -354,6 +355,7 @@ def test_perform_ota_successful_md5_auth(
                 espota2.CLIENT_FEATURE_SUPPORTS_COMPRESSION
                 | espota2.CLIENT_FEATURE_SUPPORTS_SHA256_AUTH
                 | espota2.CLIENT_FEATURE_SUPPORTS_EXTENDED_PROTOCOL
+                | espota2.CLIENT_FEATURE_SUPPORTS_DEFLATE
             ]
         )
     )
@@ -601,12 +603,16 @@ def test_perform_ota_upload_error(mock_socket: Mock, mock_file: io.BytesIO) -> N
         espota2.perform_ota(mock_socket, None, mock_file, "test.bin")
 
 
-def _no_auth_handshake(version: int) -> list[bytes]:
+def _no_auth_handshake(version: int, server_features: int | None = None) -> list[bytes]:
     """Recv responses for a handshake without auth, up to the MD5 check."""
+    if server_features is None:
+        features = [bytes([espota2.RESPONSE_HEADER_OK])]
+    else:
+        features = [bytes([espota2.RESPONSE_FEATURE_FLAGS]), bytes([server_features])]
     return [
         bytes([espota2.RESPONSE_OK]),  # First byte of version response
         bytes([version]),  # Version number
-        bytes([espota2.RESPONSE_HEADER_OK]),  # Features response
+        *features,
         bytes([espota2.RESPONSE_AUTH_OK]),  # No auth required
         bytes([espota2.RESPONSE_UPDATE_PREPARE_OK]),  # Binary size OK
         bytes([espota2.RESPONSE_BIN_MD5_OK]),  # MD5 checksum OK
@@ -1054,6 +1060,7 @@ def test_perform_ota_successful_sha256_auth(
                 espota2.CLIENT_FEATURE_SUPPORTS_COMPRESSION
                 | espota2.CLIENT_FEATURE_SUPPORTS_SHA256_AUTH
                 | espota2.CLIENT_FEATURE_SUPPORTS_EXTENDED_PROTOCOL
+                | espota2.CLIENT_FEATURE_SUPPORTS_DEFLATE
             ]
         )
     )
@@ -1110,6 +1117,7 @@ def test_perform_ota_sha256_fallback_to_md5(
                 espota2.CLIENT_FEATURE_SUPPORTS_COMPRESSION
                 | espota2.CLIENT_FEATURE_SUPPORTS_SHA256_AUTH
                 | espota2.CLIENT_FEATURE_SUPPORTS_EXTENDED_PROTOCOL
+                | espota2.CLIENT_FEATURE_SUPPORTS_DEFLATE
             ]
         )
     )
@@ -1219,6 +1227,7 @@ def test_perform_ota_extended_protocol_app(
                 espota2.CLIENT_FEATURE_SUPPORTS_COMPRESSION
                 | espota2.CLIENT_FEATURE_SUPPORTS_SHA256_AUTH
                 | espota2.CLIENT_FEATURE_SUPPORTS_EXTENDED_PROTOCOL
+                | espota2.CLIENT_FEATURE_SUPPORTS_DEFLATE
             ]
         )
     )
@@ -1279,6 +1288,7 @@ def test_perform_ota_successful_partition_table(
                 espota2.CLIENT_FEATURE_SUPPORTS_COMPRESSION
                 | espota2.CLIENT_FEATURE_SUPPORTS_SHA256_AUTH
                 | espota2.CLIENT_FEATURE_SUPPORTS_EXTENDED_PROTOCOL
+                | espota2.CLIENT_FEATURE_SUPPORTS_DEFLATE
             ]
         )
     )
@@ -1507,3 +1517,40 @@ def test_check_error_passes_non_error_when_expect_is_none() -> None:
     espota2.check_error([espota2.RESPONSE_OK], None)
     espota2.check_error([espota2.RESPONSE_HEADER_OK], None)
     espota2.check_error([espota2.RESPONSE_FEATURE_FLAGS], None)
+
+
+# Device replies after the MD5 check for a one-chunk upload
+_UPLOAD_TAIL = [
+    bytes([espota2.RESPONSE_CHUNK_OK]),
+    bytes([espota2.RESPONSE_RECEIVE_OK]),
+    bytes([espota2.RESPONSE_UPDATE_END_OK]),
+]
+
+
+@pytest.mark.usefixtures("mock_time")
+@pytest.mark.parametrize(
+    "server_features",
+    [
+        espota2.SERVER_FEATURE_SUPPORTS_DEFLATE,
+        # Binding offer: deflate wins over gzip
+        espota2.SERVER_FEATURE_SUPPORTS_DEFLATE
+        | espota2.SERVER_FEATURE_SUPPORTS_COMPRESSION,
+    ],
+)
+def test_perform_ota_with_deflate(mock_socket: Mock, server_features: int) -> None:
+    """The device gets a raw deflate stream, both sizes and the image MD5."""
+    original_content = b"firmware" * 100
+    mock_socket.recv.side_effect = (
+        _no_auth_handshake(espota2.OTA_VERSION_2_0, server_features) + _UPLOAD_TAIL
+    )
+
+    espota2.perform_ota(mock_socket, None, io.BytesIO(original_content), "test.bin")
+
+    sent = [c[0][0] for c in mock_socket.sendall.call_args_list]
+    # magic, features, ota type, size, image size, md5, data, end ack
+    sent_size = struct.unpack(">I", sent[3])[0]
+    assert sent[4] == len(original_content).to_bytes(espota2.SIZE_FIELD_BYTES, "big")
+    payload = sent[6]
+    assert len(payload) == sent_size < len(original_content)
+    assert zlib.decompress(payload, -espota2.DEFLATE_WINDOW_BITS) == original_content
+    assert sent[5] == hashlib.md5(original_content).hexdigest().encode()