feat: integrate MCP and ES3C28P audio support with upstream compatibility updates

Tactility/Private/Tactility/mcp/McpSystem.h

@@ -27,6 +27,14 @@ struct McpSystemState {
     Device* i2sDevice = nullptr;
     volatile bool audioBusy = false;
     volatile bool audioRunning = false; // Used to abort play/record loop
+
+    // Video streaming state
+    volatile bool streamRunning = false;
+    void* streamTaskHandle = nullptr; // use void* to avoid freertos header inclusion dependency
+    uint32_t framesDrawn = 0;
+    uint32_t tcpBytesReceived = 0;
+    uint32_t lastDrawMs = 0;
+    double lastFps = 0.0;
 };
 
 McpSystemState& getState();
@@ -45,6 +53,22 @@ bool playWavMemory(const uint8_t* data, size_t size, int volume, std::string& er
 bool playMp3File(const std::string& filename, int volume, std::string& error);
 bool playMp3Memory(const uint8_t* data, size_t size, int volume, std::string& error);
 
+bool getBatteryStatus(double& voltage_v, int& percentage_pct, std::string& error);
+bool setLedColor(int r, int g, int b, const std::string& mode, std::string& error);
+bool getSensors(double& temp_c, double& hum_pct, std::string& imu_json, std::string& error);
+bool scanBleDevices(int duration_ms, std::string& devices_json, std::string& error);
+bool writeSdFile(const std::string& filename, const std::string& content, std::string& error);
+bool readSdFile(const std::string& filename, std::string& content, std::string& error);
+bool downloadSdFile(const std::string& url, const std::string& filename, std::string& error);
+
+bool startVideoStreamServer();
+void stopVideoStreamServer();
+bool getVideoStreamStats(std::string& stats_json);
+
+bool listApps(std::string& apps_json, std::string& error);
+bool runApp(const std::string& appId, std::string& error);
+bool listSdFiles(const std::string& directory, std::string& files_json, std::string& error);
+
 } // namespace tt::mcp
 
 #endif

Tactility/Private/Tactility/mcp/minimp3.h

@@ -20,6 +20,7 @@ typedef struct
     float mdct_overlap[2][9*32], qmf_state[15*2*32];
     int reserv, free_format_bytes;
     unsigned char header[4], reserv_buf[511];
+    float scratch_padding[4100];
 } mp3dec_t;
 
 #ifdef __cplusplus
@@ -1715,7 +1716,8 @@ int mp3dec_decode_frame(mp3dec_t *dec, const uint8_t *mp3, int mp3_bytes, mp3d_s
     int i = 0, igr, frame_size = 0, success = 1;
     const uint8_t *hdr;
     bs_t bs_frame[1];
-    mp3dec_scratch_t scratch;
+    _Static_assert(sizeof(mp3dec_scratch_t) <= sizeof(dec->scratch_padding), "scratch_padding is too small");
+#define scratch (*(mp3dec_scratch_t*)dec->scratch_padding)
 
     if (mp3_bytes > 4 && dec->header[0] == 0xff && hdr_compare(dec->header, mp3))
     {
@@ -1802,7 +1804,9 @@ int mp3dec_decode_frame(mp3dec_t *dec, const uint8_t *mp3, int mp3_bytes, mp3d_s
         }
 #endif /* MINIMP3_ONLY_MP3 */
     }
-    return success*hdr_frame_samples(dec->header);
+    int result = success*hdr_frame_samples(dec->header);
+#undef scratch
+    return result;
 }
 
 #ifdef MINIMP3_FLOAT_OUTPUT