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optimized a2dp_sink audio datapath

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1. removed audio cache in BTC layer of Bluedroid
2. added flow control for audio data in application layer

Closes https://github.com/espressif/esp-idf/issues/9622
This commit is contained in:
Jin Cheng
2022-10-17 20:57:19 +08:00
parent 1308ff3d21
commit 0459cf3963
3 changed files with 85 additions and 16 deletions
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components/bt/host/bluedroid/btc/profile/std/a2dp/btc_a2dp_sink.c
+1 -4
View File
@@ -77,7 +77,6 @@ enum {
/* 18 frames is equivalent to 6.89*18*2.9 ~= 360 ms @ 44.1 khz, 20 ms mediatick */
#define MAX_OUTPUT_A2DP_SNK_FRAME_QUEUE_SZ (25)
#define JITTER_BUFFER_WATER_LEVEL (5)
#define BTC_A2DP_SNK_DATA_QUEUE_IDX (1)
@@ -688,9 +687,7 @@ UINT8 btc_a2dp_sink_enque_buf(BT_HDR *p_pkt)
p_msg->num_frames_to_be_processed = (*((UINT8 *)(p_msg + 1) + p_msg->offset)) & 0x0f;
APPL_TRACE_VERBOSE("btc_a2dp_sink_enque_buf %d + \n", p_msg->num_frames_to_be_processed);
fixed_queue_enqueue(a2dp_sink_local_param.btc_aa_snk_cb.RxSbcQ, p_msg, FIXED_QUEUE_MAX_TIMEOUT);
if (fixed_queue_length(a2dp_sink_local_param.btc_aa_snk_cb.RxSbcQ) >= JITTER_BUFFER_WATER_LEVEL) {
osi_thread_post_event(a2dp_sink_local_param.btc_aa_snk_cb.data_ready_event, OSI_THREAD_MAX_TIMEOUT);
}
osi_thread_post_event(a2dp_sink_local_param.btc_aa_snk_cb.data_ready_event, OSI_THREAD_MAX_TIMEOUT);
} else {
/* let caller deal with a failed allocation */
APPL_TRACE_WARNING("btc_a2dp_sink_enque_buf No Buffer left - ");