refactor(bt/bluedroid): Refactor a2dp audio data path

- Refactor audio APIs, optimize audio data path, reduce memory copy operations
- Support using external codec in application layer
- The internal codec will not be compiled if not use

components/bt/host/bluedroid/stack/include/stack/a2d_sbc.h

@@ -30,7 +30,12 @@
 /* the length of the SBC Media Payload header. */
 #define A2D_SBC_MPL_HDR_LEN         1
 
-/* the LOSC of SBC media codec capabilitiy */
+/* CIE offset in the info byte sequence */
+#define A2D_SBC_CIE_OFF             3
+/* CIE length in the info byte sequence */
+#define A2D_SBC_CIE_LEN             4
+
+/* the LOSC of SBC media codec capability */
 #define A2D_SBC_INFO_LEN            6
 
 /* for Codec Specific Information Element */

components/bt/host/bluedroid/stack/include/stack/avdt_api.h

@@ -517,6 +517,18 @@ extern void AVDT_AbortReq(UINT8 handle);
 *******************************************************************************/
 extern UINT16 AVDT_CreateStream(UINT8 *p_handle, tAVDT_CS *p_cs);
 
+/*******************************************************************************
+**
+** Function         AVDT_UpdateCodecInfo
+**
+** Description      Update codec capability for a stream endpoint.
+**
+**
+** Returns          AVDT_SUCCESS if successful, otherwise error.
+**
+*******************************************************************************/
+extern UINT16 AVDT_UpdateCodecInfo(UINT8 handle, UINT8 num_codec, UINT8 *codec_info, UINT16 codec_info_len);
+
 /*******************************************************************************
 **
 ** Function         AVDT_RemoveStream