104 static bthf_client_callbacks_t* bt_hf_client_callbacks = NULL;
122     if (bt_hf_client_callbacks == NULL) {                               \
132     if (bt_hf_client_callbacks == NULL) {                                    \
165   if (cb == NULL || !is_connected(cb)) {  in btif_in_hf_client_generic_evt()
213   return NULL;  in btif_hf_client_get_cb_by_handle()
237   return NULL;  in btif_hf_client_get_cb_by_bda()
257   return NULL;  in btif_hf_client_allocate_cb()
298   if (cb == NULL) {  in connect_int()
337   if (cb != NULL) {  in disconnect()
356   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in connect_audio()
362     BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_BCC, 0, 0, NULL);  in connect_audio()
371                         sizeof(RawAddress), NULL);  in connect_audio()
386   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in disconnect_audio()
405   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in start_voice_recognition()
410     BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_BVRA, 1, 0, NULL);  in start_voice_recognition()
427   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in stop_voice_recognition()
432     BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_BVRA, 0, 0, NULL);  in stop_voice_recognition()
450   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in volume_control()
456       BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_VGS, volume, 0, NULL);  in volume_control()
459       BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_VGM, volume, 0, NULL);  in volume_control()
480   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in dial()
487     BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_BLDN, 0, 0, NULL);  in dial()
503   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in dial_memory()
507   BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_ATD, location, 0, NULL);  in dial_memory()
524   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in handle_call_action()
531         BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_CHLD, 0, 0, NULL);  in handle_call_action()
538         BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_CHLD, 1, 0, NULL);  in handle_call_action()
545         BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_CHLD, 2, 0, NULL);  in handle_call_action()
551         BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_CHLD, 3, 0, NULL);  in handle_call_action()
557         BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_CHLD, 4, 0, NULL);  in handle_call_action()
566         BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_CHLD, 1, idx, NULL);  in handle_call_action()
575         BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_CHLD, 2, idx, NULL);  in handle_call_action()
580       BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_ATA, 0, 0, NULL);  in handle_call_action()
583       BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_CHUP, 0, 0, NULL);  in handle_call_action()
586       BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_BTRH, 0, 0, NULL);  in handle_call_action()
589       BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_BTRH, 1, 0, NULL);  in handle_call_action()
592       BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_BTRH, 2, 0, NULL);  in handle_call_action()
612   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in query_current_calls()
617     BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_CLCC, 0, 0, NULL);  in query_current_calls()
635   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in query_current_operator_name()
639   BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_COPS, 0, 0, NULL);  in query_current_operator_name()
654   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in retrieve_subscriber_info()
658   BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_CNUM, 0, 0, NULL);  in retrieve_subscriber_info()
673   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in send_dtmf()
677   BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_VTS, code, 0, NULL);  in send_dtmf()
692   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in request_last_voice_tag_number()
697     BTA_HfClientSendAT(cb->handle, BTA_HF_CLIENT_AT_CMD_BINP, 1, 0, NULL);  in request_last_voice_tag_number()
718     bt_hf_client_callbacks = NULL;  in cleanup()
734   if (cb == NULL || !is_connected(cb)) return BT_STATUS_FAIL;  in send_at_cmd()
739                    val2, (arg != NULL) ? arg : "<null>");  in send_at_cmd()
771   if (cb == NULL || !is_connected(cb)) return;  in process_ind_evt()
826   if (cb == NULL && event == BTA_HF_CLIENT_OPEN_EVT) {  in btif_hf_client_upstreams_evt()
832   } else if (cb == NULL) {  in btif_hf_client_upstreams_evt()
1025                                  (char*)p_data, sizeof(*p_data), NULL);  in bta_hf_client_evt()