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Commit 1888b767 authored by Andre Eisenbach's avatar Andre Eisenbach
Browse files

Log RSSI when A2DP buffers are flushed 

To add another datapoint and potentially narrow down *why* we had to
flush the buffers, add RSSI logging to keep track of signal strength
during audio drop-out events.

Change-Id: Ie52f56290951130165a9f375a898a9bacf459d55
parent 8cd5e3a3

system/btif/src/btif_media_task.c

+25 −0
Original line number Diff line number Diff line
@@ -492,6 +492,25 @@ UNUSED_ATTR static const char *dump_media_event(UINT16 event) 
    }

}



static void btm_read_rssi_cb(void *data)

{

    assert(data);



    tBTM_RSSI_RESULTS *result = (tBTM_RSSI_RESULTS*)data;

    if (result->status != BTM_SUCCESS)

    {

        LOG_ERROR(LOG_TAG, "%s unable to read remote RSSI (status %d)",

            __func__, result->status);

        return;

    }



    char temp_buffer[20] = {0};

    LOG_WARN(LOG_TAG, "%s device: %s, rssi: %d", __func__,

        bdaddr_to_string((bt_bdaddr_t *)result->rem_bda, temp_buffer,

            sizeof(temp_buffer)),

        result->rssi);

}



/*****************************************************************************

 **  A2DP CTRL PATH

 *****************************************************************************/
@@ -3096,13 +3115,19 @@ static void btif_media_aa_prep_2_send(UINT8 nb_frame, uint64_t timestamp_us) 
        APPL_TRACE_WARNING("%s() - TX queue buffer count %d/%d", __func__,

                           fixed_queue_length(btif_media_cb.TxAaQ),

                           MAX_OUTPUT_A2DP_FRAME_QUEUE_SZ - nb_frame);

        // Keep track of drop-outs

        btif_media_cb.stats.tx_queue_dropouts++;

        btif_media_cb.stats.tx_queue_last_dropouts_us = timestamp_us;



        // Flush all queued buffers...

        while (fixed_queue_length(btif_media_cb.TxAaQ)) {

            btif_media_cb.stats.tx_queue_total_dropped_messages++;

            osi_free(fixed_queue_try_dequeue(btif_media_cb.TxAaQ));

        }



        // Request RSSI for log purposes if we had to flush buffers

        bt_bdaddr_t peer_bda = btif_av_get_addr();

        BTM_ReadRSSI(peer_bda.address, btm_read_rssi_cb);

    }



    // Transcode frame