Merge branch 'bugfix/fix_hfp_api_status_check_v6.1' into 'release/v6.1'

fix(bt/bluedroid): check HFP audio status before forwarding SCO data (v6.1)

See merge request espressif/esp-idf!52889

components/bt/host/bluedroid/api/esp_hf_client_api.c

@@ -645,9 +645,11 @@ esp_err_t esp_hf_client_audio_data_send(esp_hf_sync_conn_hdl_t sync_conn_hdl, es
         return ESP_ERR_INVALID_ARG;
     }
 
-    BTA_HfClientAudioDataSend(sync_conn_hdl, (uint8_t *)audio_buf, audio_buf->data, audio_buf->data_len);
+    if (btc_hf_client_audio_data_send(sync_conn_hdl, (uint8_t *)audio_buf, audio_buf->data, audio_buf->data_len) == BT_STATUS_SUCCESS) {
         return ESP_OK;
     }
+    return ESP_FAIL;
+}
 
 esp_err_t esp_hf_client_pcm_resample_init(uint32_t src_sps, uint32_t bits, uint32_t channels)
 {

components/bt/host/bluedroid/api/include/api/esp_hf_ag_api.h

@@ -689,6 +689,8 @@ void esp_hf_ag_audio_buff_free(esp_hf_audio_buff_t *audio_buf);
  *                  If the length of the audio data is equal to preferred_frame_size indicated by
  *                  ESP_HF_AUDIO_STATE_EVT, then we can reduce one memory copy inside the Bluedroid stack.
  *                  This function is only used in the case that Voice Over HCI is enabled.
+ *                  On success, the stack takes ownership of audio_buf and will free it internally.
+ *                  On failure, the caller is responsible for freeing audio_buf with esp_hf_ag_audio_buff_free.
  *
  * @param[in]       sync_conn_hdl: (e)SCO connection handle
  *

components/bt/host/bluedroid/api/include/api/esp_hf_client_api.h

@@ -715,6 +715,8 @@ void esp_hf_client_audio_buff_free(esp_hf_audio_buff_t *audio_buf);
  *                  If the length of the audio data is equal to preferred_frame_size indicated by
  *                  ESP_HF_CLIENT_AUDIO_STATE_EVT, then we can reduce one memory copy inside the Bluedroid stack.
  *                  This function is only used in the case that Voice Over HCI is enabled.
+ *                  On success, the stack takes ownership of audio_buf and will free it internally.
+ *                  On failure, the caller is responsible for freeing audio_buf with esp_hf_client_audio_buff_free.
  *
  * @param[in]       sync_conn_hdl: (e)SCO connection handle
  *
@@ -724,6 +726,7 @@ void esp_hf_client_audio_buff_free(esp_hf_audio_buff_t *audio_buf);
  *                  - ESP_OK: success
  *                  - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
  *                  - ESP_ERR_INVALID_ARG: invalid parameter
+ *                  - ESP_FAIL: others
  *
  */
 esp_err_t esp_hf_client_audio_data_send(esp_hf_sync_conn_hdl_t sync_conn_hdl, esp_hf_audio_buff_t *audio_buf);

components/bt/host/bluedroid/btc/profile/std/hf_ag/btc_hf_ag.c

@@ -964,10 +964,10 @@ bt_status_t btc_hf_ci_sco_data(void)
 bt_status_t btc_hf_ag_audio_data_send(uint16_t sync_conn_hdl, uint8_t *p_buff_start, uint8_t *p_data, uint8_t data_len)
 {
 #if (BTM_SCO_HCI_INCLUDED == TRUE) && (BTA_HFP_EXT_CODEC == TRUE)
-    /* currently, sync_conn_hdl is not used */
     int idx = btc_hf_latest_connected_idx();
     CHECK_HF_SLC_CONNECTED(idx);
-    if (idx != BTC_HF_INVALID_IDX) {
+
+    if (sync_conn_hdl != ESP_INVALID_CONN_HANDLE && hf_local_param.btc_hf_cb[idx].sync_conn_hdl == sync_conn_hdl) {
         BTA_AgAudioDataSend(hf_local_param.btc_hf_cb[idx].handle, p_buff_start, p_data, data_len);
         return BT_STATUS_SUCCESS;
     }

components/bt/host/bluedroid/btc/profile/std/hf_client/btc_hf_client.c

@@ -352,6 +352,19 @@ bt_status_t btc_hf_client_disconnect_audio( bt_bdaddr_t *bd_addr )
     return BT_STATUS_FAIL;
 }
 
+bt_status_t btc_hf_client_audio_data_send(uint16_t sync_conn_hdl, uint8_t *p_buff_start, uint8_t *p_data, uint8_t data_len)
+{
+#if (BTM_SCO_HCI_INCLUDED == TRUE) && (BTA_HFP_EXT_CODEC == TRUE)
+    CHECK_HF_CLIENT_SLC_CONNECTED();
+
+    if (sync_conn_hdl != ESP_INVALID_CONN_HANDLE && hf_client_local_param.btc_hf_client_cb.sync_conn_hdl == sync_conn_hdl) {
+        BTA_HfClientAudioDataSend(sync_conn_hdl, p_buff_start, p_data, data_len);
+        return BT_STATUS_SUCCESS;
+    }
+#endif
+    return BT_STATUS_FAIL;
+}
+
 /*******************************************************************************
 **
 ** Function         btc_hf_client_start_voice_recognition

components/bt/host/bluedroid/btc/profile/std/include/btc_hf_client.h

@@ -176,6 +176,8 @@ void btc_hf_client_incoming_data_cb_to_app(const uint8_t *data, uint32_t len);
 
 uint32_t btc_hf_client_outgoing_data_cb_to_app(uint8_t *data, uint32_t len);
 
+bt_status_t btc_hf_client_audio_data_send(uint16_t sync_conn_hdl, uint8_t *p_buff_start, uint8_t *p_data, uint8_t data_len);
+
 void btc_hf_client_get_profile_status(esp_hf_client_profile_status_t *param);
 #endif  ///BTC_HF_CLIENT_INCLUDED == TRUE