[benchmark] Add BLE raw advertisement proto encode benchmarks (#15289)

tests/benchmarks/components/api/bench_proto_encode.cpp

@@ -295,4 +295,93 @@ static void CalcAndEncode_DeviceInfoResponse_Fresh(benchmark::State &state) {
 }
 BENCHMARK(CalcAndEncode_DeviceInfoResponse_Fresh);
 
+// --- BluetoothLERawAdvertisementsResponse (12 adverts, highest-volume BLE message) ---
+
+#ifdef USE_BLUETOOTH_PROXY
+
+static BluetoothLERawAdvertisementsResponse make_ble_raw_advs_12() {
+  static const uint8_t fake_adv_data[] = {
+      0x02, 0x01, 0x06, 0x03, 0x03, 0x9F, 0xFE, 0x17, 0x16, 0x9F, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00,
+      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  };
+  BluetoothLERawAdvertisementsResponse msg;
+  msg.advertisements_len = 12;
+  for (int i = 0; i < 12; i++) {
+    auto &adv = msg.advertisements[i];
+    adv.address = 0xAABBCCDD0000ULL + i;
+    adv.rssi = -60 - i;
+    adv.address_type = 1;
+    memcpy(adv.data, fake_adv_data, sizeof(fake_adv_data));
+    adv.data_len = sizeof(fake_adv_data);
+  }
+  return msg;
+}
+
+static void CalculateSize_BLERawAdvs12(benchmark::State &state) {
+  auto msg = make_ble_raw_advs_12();
+
+  for (auto _ : state) {
+    uint32_t result = 0;
+    for (int i = 0; i < kInnerIterations; i++) {
+      result += msg.calculate_size();
+    }
+    benchmark::DoNotOptimize(result);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(CalculateSize_BLERawAdvs12);
+
+static void Encode_BLERawAdvs12(benchmark::State &state) {
+  auto msg = make_ble_raw_advs_12();
+  APIBuffer buffer;
+  uint32_t total_size = msg.calculate_size();
+  buffer.resize(total_size);
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      ProtoWriteBuffer writer(&buffer, 0);
+      msg.encode(writer);
+    }
+    benchmark::DoNotOptimize(buffer.data());
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(Encode_BLERawAdvs12);
+
+static void CalcAndEncode_BLERawAdvs12(benchmark::State &state) {
+  auto msg = make_ble_raw_advs_12();
+  APIBuffer buffer;
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      uint32_t size = msg.calculate_size();
+      buffer.resize(size);
+      ProtoWriteBuffer writer(&buffer, 0);
+      msg.encode(writer);
+    }
+    benchmark::DoNotOptimize(buffer.data());
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(CalcAndEncode_BLERawAdvs12);
+
+static void CalcAndEncode_BLERawAdvs12_Fresh(benchmark::State &state) {
+  auto msg = make_ble_raw_advs_12();
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      APIBuffer buffer;
+      uint32_t size = msg.calculate_size();
+      buffer.resize(size);
+      ProtoWriteBuffer writer(&buffer, 0);
+      msg.encode(writer);
+      benchmark::DoNotOptimize(buffer.data());
+    }
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(CalcAndEncode_BLERawAdvs12_Fresh);
+
+#endif  // USE_BLUETOOTH_PROXY
+
 }  // namespace esphome::api::benchmarks