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esp-idf/components/bt/bluedroid/btc/profile/std/a2dp/btc_a2dp_sink.c

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/******************************************************************************
**
** Name: btc_a2dp_sink.c
**
******************************************************************************/
#include "common/bt_target.h"
#include "common/bt_trace.h"
#include <string.h>
#include <stdint.h>
#include "common/bt_defs.h"
#include "osi/allocator.h"
#include "osi/mutex.h"
#include "osi/thread.h"
#include "osi/fixed_queue.h"
#include "stack/a2d_api.h"
#include "stack/a2d_sbc.h"
#include "bta/bta_av_api.h"
#include "bta/bta_av_ci.h"
#include "btc_av_co.h"
#include "btc_a2dp.h"
#include "btc_a2dp_control.h"
#include "btc_a2dp_sink.h"
#include "btc/btc_manage.h"
#include "btc_av.h"
#include "btc/btc_util.h"
#include "esp_a2dp_api.h"
#include "oi_codec_sbc.h"
#include "oi_status.h"
#include "osi/future.h"
#include <assert.h>
#if (BTC_AV_SINK_INCLUDED == TRUE)
/*****************************************************************************
** Constants
*****************************************************************************/
/* BTC media cmd event definition : BTC_MEDIA_TASK_CMD */
enum {
BTC_MEDIA_TASK_SINK_INIT,
BTC_MEDIA_TASK_SINK_CLEAN_UP,
BTC_MEDIA_FLUSH_AA_RX,
BTC_MEDIA_AUDIO_SINK_CFG_UPDATE,
BTC_MEDIA_AUDIO_SINK_CLEAR_TRACK,
};
enum {
BTC_A2DP_SINK_STATE_OFF = 0,
BTC_A2DP_SINK_STATE_ON = 1,
BTC_A2DP_SINK_STATE_SHUTTING_DOWN = 2
};
enum {
BTC_A2DP_SINK_DATA_EVT = 0,
};
/*
* CONGESTION COMPENSATION CTRL ::
*
* Thus setting controls how many buffers we will hold in media task
* during temp link congestion. Together with the stack buffer queues
* it controls much temporary a2dp link congestion we can
* compensate for. It however also depends on the default run level of sinks
* jitterbuffers. Depending on type of sink this would vary.
* Ideally the (SRC) max tx buffer capacity should equal the sinks
* jitterbuffer runlevel including any intermediate buffers on the way
* towards the sinks codec.
*/
/* fixme -- define this in pcm time instead of buffer count */
/* The typical runlevel of the tx queue size is ~1 buffer
but due to link flow control or thread preemption in lower
layers we might need to temporarily buffer up data */
/* 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 (18)
typedef struct {
UINT16 num_frames_to_be_processed;
UINT16 len;
UINT16 offset;
UINT16 layer_specific;
} tBT_SBC_HDR;
typedef struct {
BOOLEAN rx_flush; /* discards any incoming data when true */
UINT8 channel_count;
fixed_queue_t *RxSbcQ;
UINT32 sample_rate;
} tBTC_A2DP_SINK_CB;
static void btc_a2dp_sink_thread_init(UNUSED_ATTR void *context);
static void btc_a2dp_sink_thread_cleanup(UNUSED_ATTR void *context);
static void btc_a2dp_sink_flush_q(fixed_queue_t *p_q);
static void btc_a2dp_sink_rx_flush(void);
static int btc_a2dp_sink_get_track_frequency(UINT8 frequency);
static int btc_a2dp_sink_get_track_channel_count(UINT8 channeltype);
/* Handle incoming media packets A2DP SINK streaming*/
static void btc_a2dp_sink_handle_inc_media(tBT_SBC_HDR *p_msg);
static void btc_a2dp_sink_handle_decoder_reset(tBTC_MEDIA_SINK_CFG_UPDATE *p_msg);
static void btc_a2dp_sink_handle_clear_track(void);
static BOOLEAN btc_a2dp_sink_clear_track(void);
static void btc_a2dp_sink_task_handler(void *arg);
static void btc_a2dp_sink_data_ready(UNUSED_ATTR void *context);
static tBTC_A2DP_SINK_CB btc_aa_snk_cb;
static int btc_a2dp_sink_state = BTC_A2DP_SINK_STATE_OFF;
static future_t *btc_a2dp_sink_future = NULL;
static xTaskHandle btc_aa_snk_task_hdl = NULL;
static QueueHandle_t btc_aa_snk_data_queue = NULL;
static QueueHandle_t btc_aa_snk_ctrl_queue = NULL;
static QueueSetHandle_t btc_aa_snk_queue_set;
static esp_a2d_sink_data_cb_t bt_aa_snk_data_cb = NULL;
void btc_a2dp_sink_reg_data_cb(esp_a2d_sink_data_cb_t callback)
{
// todo: critical section protection
bt_aa_snk_data_cb = callback;
}
static inline void btc_a2d_data_cb_to_app(const uint8_t *data, uint32_t len)
{
// todo: critical section protection
if (bt_aa_snk_data_cb) {
bt_aa_snk_data_cb(data, len);
}
}
OI_CODEC_SBC_DECODER_CONTEXT context;
OI_UINT32 contextData[CODEC_DATA_WORDS(2, SBC_CODEC_FAST_FILTER_BUFFERS)];
OI_INT16 pcmData[15 * SBC_MAX_SAMPLES_PER_FRAME * SBC_MAX_CHANNELS];
/*****************************************************************************
** Misc helper functions
*****************************************************************************/
static inline void btc_a2d_cb_to_app(esp_a2d_cb_event_t event, esp_a2d_cb_param_t *param)
{
esp_a2d_cb_t btc_aa_cb = (esp_a2d_cb_t)btc_profile_cb_get(BTC_PID_A2DP);
if (btc_aa_cb) {
btc_aa_cb(event, param);
}
}
/*****************************************************************************
** BTC ADAPTATION
*****************************************************************************/
static void btc_a2dp_sink_ctrl_post(uint32_t sig, void *par)
{
BtTaskEvt_t *evt = (BtTaskEvt_t *)osi_malloc(sizeof(BtTaskEvt_t));
if (evt == NULL) {
return;
}
evt->sig = sig;
evt->par = par;
if (xQueueSend(btc_aa_snk_ctrl_queue, &evt, portMAX_DELAY) != pdTRUE) {
APPL_TRACE_WARNING("btc_aa_snk_ctrl_queue failed, sig 0x%x\n", sig);
}
}
static void btc_a2dp_sink_ctrl_handler(BtTaskEvt_t *e)
{
if (e == NULL) {
return;
}
switch (e->sig) {
case BTC_MEDIA_TASK_SINK_INIT:
btc_a2dp_sink_thread_init(NULL);
break;
case BTC_MEDIA_TASK_SINK_CLEAN_UP:
btc_a2dp_sink_thread_cleanup(NULL);
break;
case BTC_MEDIA_AUDIO_SINK_CFG_UPDATE:
btc_a2dp_sink_handle_decoder_reset(e->par);
break;
case BTC_MEDIA_AUDIO_SINK_CLEAR_TRACK:
btc_a2dp_sink_handle_clear_track();
break;
case BTC_MEDIA_FLUSH_AA_RX:
btc_a2dp_sink_rx_flush();
break;
default:
APPL_TRACE_WARNING("media task unhandled evt: 0x%x\n", e->sig);
}
if (e->par != NULL) {
osi_free(e->par);
}
}
static void btc_a2dp_sink_task_handler(void *arg)
{
QueueSetMemberHandle_t xActivatedMember;
BtTaskEvt_t *e = NULL;
for (;;) {
xActivatedMember = xQueueSelectFromSet(btc_aa_snk_queue_set, portMAX_DELAY);
if (xActivatedMember == btc_aa_snk_data_queue) {
int32_t data_evt;
xQueueReceive(xActivatedMember, &data_evt, 0);
if (data_evt == BTC_A2DP_SINK_DATA_EVT) {
btc_a2dp_sink_data_ready(NULL);
}
} else if (xActivatedMember == btc_aa_snk_ctrl_queue) {
xQueueReceive(xActivatedMember, &e, 0);
btc_a2dp_sink_ctrl_handler(e);
osi_free(e);
}
}
}
bool btc_a2dp_sink_startup(void)
{
if (btc_a2dp_sink_state != BTC_A2DP_SINK_STATE_OFF) {
APPL_TRACE_ERROR("warning : media task already running");
return false;
}
APPL_TRACE_EVENT("## A2DP SINK START MEDIA THREAD ##");
btc_aa_snk_queue_set = xQueueCreateSet(BTC_A2DP_SINK_TASK_QUEUE_SET_LEN);
configASSERT(btc_aa_snk_queue_set);
btc_aa_snk_data_queue = xQueueCreate(BTC_A2DP_SINK_DATA_QUEUE_LEN, sizeof(int32_t));
configASSERT(btc_aa_snk_data_queue);
xQueueAddToSet(btc_aa_snk_data_queue, btc_aa_snk_queue_set);
btc_aa_snk_ctrl_queue = xQueueCreate(BTC_A2DP_SINK_CTRL_QUEUE_LEN, sizeof(void *));
configASSERT(btc_aa_snk_ctrl_queue);
xQueueAddToSet(btc_aa_snk_ctrl_queue, btc_aa_snk_queue_set);
if (!btc_aa_snk_data_queue || !btc_aa_snk_ctrl_queue || !btc_aa_snk_queue_set ) {
goto error_exit;
}
xTaskCreatePinnedToCore(btc_a2dp_sink_task_handler, BTC_A2DP_SINK_TASK_NAME, BTC_A2DP_SINK_TASK_STACK_SIZE, NULL, BTC_A2DP_SINK_TASK_PRIO, &btc_aa_snk_task_hdl, BTC_A2DP_SINK_TASK_PINNED_TO_CORE);
if (btc_aa_snk_task_hdl == NULL) {
goto error_exit;
}
btc_a2dp_sink_ctrl_post(BTC_MEDIA_TASK_SINK_INIT, NULL);
APPL_TRACE_EVENT("## A2DP SINK MEDIA THREAD STARTED ##\n");
return true;
error_exit:;
APPL_TRACE_ERROR("%s unable to start up media thread\n", __func__);
if (btc_aa_snk_task_hdl != NULL) {
vTaskDelete(btc_aa_snk_task_hdl);
btc_aa_snk_task_hdl = NULL;
}
if (btc_aa_snk_data_queue) {
vQueueDelete(btc_aa_snk_data_queue);
btc_aa_snk_data_queue = NULL;
}
if (btc_aa_snk_ctrl_queue) {
vQueueDelete(btc_aa_snk_ctrl_queue);
btc_aa_snk_ctrl_queue = NULL;
}
if (btc_aa_snk_queue_set) {
vQueueDelete(btc_aa_snk_queue_set);
btc_aa_snk_queue_set = NULL;
}
return false;
}
void btc_a2dp_sink_shutdown(void)
{
APPL_TRACE_EVENT("## A2DP SINK STOP MEDIA THREAD ##\n");
// Exit thread
btc_a2dp_sink_state = BTC_A2DP_SINK_STATE_SHUTTING_DOWN;
btc_a2dp_sink_future = future_new();
assert(btc_a2dp_sink_future);
btc_a2dp_sink_ctrl_post(BTC_MEDIA_TASK_SINK_CLEAN_UP, NULL);
future_await(btc_a2dp_sink_future);
btc_a2dp_sink_future = NULL;
vTaskDelete(btc_aa_snk_task_hdl);
btc_aa_snk_task_hdl = NULL;
vQueueDelete(btc_aa_snk_data_queue);
btc_aa_snk_data_queue = NULL;
vQueueDelete(btc_aa_snk_ctrl_queue);
btc_aa_snk_ctrl_queue = NULL;
vQueueDelete(btc_aa_snk_queue_set);
btc_aa_snk_queue_set = NULL;
}
/*****************************************************************************
**
** Function btc_a2dp_sink_on_idle
**
*******************************************************************************/
void btc_a2dp_sink_on_idle(void)
{
btc_aa_snk_cb.rx_flush = TRUE;
btc_a2dp_sink_rx_flush_req();
btc_a2dp_sink_clear_track();
APPL_TRACE_DEBUG("Stopped BT track");
}
/*****************************************************************************
**
** Function btc_a2dp_sink_on_stopped
**
*******************************************************************************/
void btc_a2dp_sink_on_stopped(tBTA_AV_SUSPEND *p_av)
{
btc_aa_snk_cb.rx_flush = TRUE;
btc_a2dp_sink_rx_flush_req();
btc_a2dp_control_set_datachnl_stat(FALSE);
}
/*****************************************************************************
**
** Function btc_a2dp_on_suspended
**
*******************************************************************************/
void btc_a2dp_sink_on_suspended(tBTA_AV_SUSPEND *p_av)
{
btc_aa_snk_cb.rx_flush = TRUE;
btc_a2dp_sink_rx_flush_req();
return;
}
static void btc_a2dp_sink_data_post(int32_t data_type)
{
if (xQueueSend(btc_aa_snk_data_queue, &data_type, 0) != pdTRUE) {
APPL_TRACE_DEBUG("Media data Q filled\n");
}
}
/*******************************************************************************
**
** Function btc_a2dp_sink_clear_track
**
** Description
**
** Returns TRUE is success
**
*******************************************************************************/
static BOOLEAN btc_a2dp_sink_clear_track(void)
{
btc_a2dp_sink_ctrl_post(BTC_MEDIA_AUDIO_SINK_CLEAR_TRACK, NULL);
return TRUE;
}
/* when true media task discards any rx frames */
void btc_a2dp_sink_set_rx_flush(BOOLEAN enable)
{
APPL_TRACE_EVENT("## DROP RX %d ##\n", enable);
btc_aa_snk_cb.rx_flush = enable;
}
/*****************************************************************************
**
** Function btc_a2dp_sink_reset_decoder
**
** Description
**
** Returns
**
*******************************************************************************/
void btc_a2dp_sink_reset_decoder(UINT8 *p_av)
{
APPL_TRACE_EVENT("btc reset decoder");
APPL_TRACE_DEBUG("btc reset decoder p_codec_info[%x:%x:%x:%x:%x:%x]\n",
p_av[1], p_av[2], p_av[3],
p_av[4], p_av[5], p_av[6]);
tBTC_MEDIA_SINK_CFG_UPDATE *p_buf;
if (NULL == (p_buf = osi_malloc(sizeof(tBTC_MEDIA_SINK_CFG_UPDATE)))) {
APPL_TRACE_ERROR("btc reset decoder No Buffer ");
return;
}
memcpy(p_buf->codec_info, p_av, AVDT_CODEC_SIZE);
btc_a2dp_sink_ctrl_post(BTC_MEDIA_AUDIO_SINK_CFG_UPDATE, p_buf);
}
static void btc_a2dp_sink_data_ready(UNUSED_ATTR void *context)
{
tBT_SBC_HDR *p_msg;
if (fixed_queue_is_empty(btc_aa_snk_cb.RxSbcQ)) {
APPL_TRACE_DEBUG(" QUE EMPTY ");
} else {
if (btc_aa_snk_cb.rx_flush == TRUE) {
btc_a2dp_sink_flush_q(btc_aa_snk_cb.RxSbcQ);
return;
}
while ((p_msg = (tBT_SBC_HDR *)fixed_queue_try_peek_first(btc_aa_snk_cb.RxSbcQ)) != NULL ) {
if (btc_a2dp_sink_state != BTC_A2DP_SINK_STATE_ON){
return;
}
btc_a2dp_sink_handle_inc_media(p_msg);
p_msg = (tBT_SBC_HDR *)fixed_queue_try_dequeue(btc_aa_snk_cb.RxSbcQ);
if ( p_msg == NULL ) {
APPL_TRACE_ERROR("Insufficient data in que ");
break;
}
osi_free(p_msg);
}
APPL_TRACE_DEBUG(" Process Frames - ");
}
}
/*******************************************************************************
**
** Function btc_a2dp_sink_handle_decoder_reset
**
** Description
**
** Returns void
**
*******************************************************************************/
static void btc_a2dp_sink_handle_decoder_reset(tBTC_MEDIA_SINK_CFG_UPDATE *p_msg)
{
tBTC_MEDIA_SINK_CFG_UPDATE *p_buf = p_msg;
tA2D_STATUS a2d_status;
tA2D_SBC_CIE sbc_cie;
OI_STATUS status;
UINT32 freq_multiple = 48 * 20; /* frequency multiple for 20ms of data , initialize with 48K*/
UINT32 num_blocks = 16;
UINT32 num_subbands = 8;
APPL_TRACE_EVENT("%s p_codec_info[%x:%x:%x:%x:%x:%x]\n", __FUNCTION__,
p_buf->codec_info[1], p_buf->codec_info[2], p_buf->codec_info[3],
p_buf->codec_info[4], p_buf->codec_info[5], p_buf->codec_info[6]);
a2d_status = A2D_ParsSbcInfo(&sbc_cie, p_buf->codec_info, FALSE);
if (a2d_status != A2D_SUCCESS) {
APPL_TRACE_ERROR("ERROR dump_codec_info A2D_ParsSbcInfo fail:%d\n", a2d_status);
return;
}
btc_aa_snk_cb.sample_rate = btc_a2dp_sink_get_track_frequency(sbc_cie.samp_freq);
btc_aa_snk_cb.channel_count = btc_a2dp_sink_get_track_channel_count(sbc_cie.ch_mode);
btc_aa_snk_cb.rx_flush = FALSE;
APPL_TRACE_EVENT("Reset to sink role");
status = OI_CODEC_SBC_DecoderReset(&context, contextData, sizeof(contextData), 2, 2, FALSE);
if (!OI_SUCCESS(status)) {
APPL_TRACE_ERROR("OI_CODEC_SBC_DecoderReset failed with error code %d\n", status);
}
btc_a2dp_control_set_datachnl_stat(TRUE);
switch (sbc_cie.samp_freq) {
case A2D_SBC_IE_SAMP_FREQ_16:
APPL_TRACE_DEBUG("\tsamp_freq:%d (16000)\n", sbc_cie.samp_freq);
freq_multiple = 16 * 20;
break;
case A2D_SBC_IE_SAMP_FREQ_32:
APPL_TRACE_DEBUG("\tsamp_freq:%d (32000)\n", sbc_cie.samp_freq);
freq_multiple = 32 * 20;
break;
case A2D_SBC_IE_SAMP_FREQ_44:
APPL_TRACE_DEBUG("\tsamp_freq:%d (44100)\n", sbc_cie.samp_freq);
freq_multiple = 441 * 2;
break;
case A2D_SBC_IE_SAMP_FREQ_48:
APPL_TRACE_DEBUG("\tsamp_freq:%d (48000)\n", sbc_cie.samp_freq);
freq_multiple = 48 * 20;
break;
default:
APPL_TRACE_DEBUG(" Unknown Frequency ");
break;
}
switch (sbc_cie.ch_mode) {
case A2D_SBC_IE_CH_MD_MONO:
APPL_TRACE_DEBUG("\tch_mode:%d (Mono)\n", sbc_cie.ch_mode);
break;
case A2D_SBC_IE_CH_MD_DUAL:
APPL_TRACE_DEBUG("\tch_mode:%d (DUAL)\n", sbc_cie.ch_mode);
break;
case A2D_SBC_IE_CH_MD_STEREO:
APPL_TRACE_DEBUG("\tch_mode:%d (STEREO)\n", sbc_cie.ch_mode);
break;
case A2D_SBC_IE_CH_MD_JOINT:
APPL_TRACE_DEBUG("\tch_mode:%d (JOINT)\n", sbc_cie.ch_mode);
break;
default:
APPL_TRACE_DEBUG(" Unknown Mode ");
break;
}
switch (sbc_cie.block_len) {
case A2D_SBC_IE_BLOCKS_4:
APPL_TRACE_DEBUG("\tblock_len:%d (4)\n", sbc_cie.block_len);
num_blocks = 4;
break;
case A2D_SBC_IE_BLOCKS_8:
APPL_TRACE_DEBUG("\tblock_len:%d (8)\n", sbc_cie.block_len);
num_blocks = 8;
break;
case A2D_SBC_IE_BLOCKS_12:
APPL_TRACE_DEBUG("\tblock_len:%d (12)\n", sbc_cie.block_len);
num_blocks = 12;
break;
case A2D_SBC_IE_BLOCKS_16:
APPL_TRACE_DEBUG("\tblock_len:%d (16)\n", sbc_cie.block_len);
num_blocks = 16;
break;
default:
APPL_TRACE_DEBUG(" Unknown BlockLen ");
break;
}
switch (sbc_cie.num_subbands) {
case A2D_SBC_IE_SUBBAND_4:
APPL_TRACE_DEBUG("\tnum_subbands:%d (4)\n", sbc_cie.num_subbands);
num_subbands = 4;
break;
case A2D_SBC_IE_SUBBAND_8:
APPL_TRACE_DEBUG("\tnum_subbands:%d (8)\n", sbc_cie.num_subbands);
num_subbands = 8;
break;
default:
APPL_TRACE_DEBUG(" Unknown SubBands ");
break;
}
switch (sbc_cie.alloc_mthd) {
case A2D_SBC_IE_ALLOC_MD_S:
APPL_TRACE_DEBUG("\talloc_mthd:%d (SNR)\n", sbc_cie.alloc_mthd);
break;
case A2D_SBC_IE_ALLOC_MD_L:
APPL_TRACE_DEBUG("\talloc_mthd:%d (Loudness)\n", sbc_cie.alloc_mthd);
break;
default:
APPL_TRACE_DEBUG(" Unknown Allocation Method");
break;
}
APPL_TRACE_EVENT("\tBit pool Min:%d Max:%d\n", sbc_cie.min_bitpool, sbc_cie.max_bitpool);
int frames_to_process = ((freq_multiple) / (num_blocks * num_subbands)) + 1;
APPL_TRACE_EVENT(" Frames to be processed in 20 ms %d\n", frames_to_process);
}
/*******************************************************************************
**
** Function btc_a2dp_sink_handle_inc_media
**
** Description
**
** Returns void
**
*******************************************************************************/
static void btc_a2dp_sink_handle_inc_media(tBT_SBC_HDR *p_msg)
{
UINT8 *sbc_start_frame = ((UINT8 *)(p_msg + 1) + p_msg->offset + 1);
int count;
UINT32 pcmBytes, availPcmBytes;
OI_INT16 *pcmDataPointer = pcmData; /*Will be overwritten on next packet receipt*/
OI_STATUS status;
int num_sbc_frames = p_msg->num_frames_to_be_processed;
UINT32 sbc_frame_len = p_msg->len - 1;
availPcmBytes = 2 * sizeof(pcmData);
/* XXX: Check if the below check is correct, we are checking for peer to be sink when we are sink */
if (btc_av_get_peer_sep() == AVDT_TSEP_SNK || (btc_aa_snk_cb.rx_flush)) {
APPL_TRACE_DEBUG(" State Changed happened in this tick ");
return;
}
// ignore data if no one is listening
if (!btc_a2dp_control_get_datachnl_stat()) {
return;
}
APPL_TRACE_DEBUG("Number of sbc frames %d, frame_len %d\n", num_sbc_frames, sbc_frame_len);
for (count = 0; count < num_sbc_frames && sbc_frame_len != 0; count ++) {
pcmBytes = availPcmBytes;
status = OI_CODEC_SBC_DecodeFrame(&context, (const OI_BYTE **)&sbc_start_frame,
(OI_UINT32 *)&sbc_frame_len,
(OI_INT16 *)pcmDataPointer,
(OI_UINT32 *)&pcmBytes);
if (!OI_SUCCESS(status)) {
APPL_TRACE_ERROR("Decoding failure: %d\n", status);
break;
}
availPcmBytes -= pcmBytes;
pcmDataPointer += pcmBytes / 2;
p_msg->offset += (p_msg->len - 1) - sbc_frame_len;
p_msg->len = sbc_frame_len + 1;
}
btc_a2d_data_cb_to_app((uint8_t *)pcmData, (2 * sizeof(pcmData) - availPcmBytes));
}
/*******************************************************************************
**
** Function btc_a2dp_sink_rx_flush_req
**
** Description
**
** Returns TRUE is success
**
*******************************************************************************/
BOOLEAN btc_a2dp_sink_rx_flush_req(void)
{
if (fixed_queue_is_empty(btc_aa_snk_cb.RxSbcQ) == TRUE) { /* Que is already empty */
return TRUE;
}
btc_a2dp_sink_ctrl_post(BTC_MEDIA_FLUSH_AA_RX, NULL);
return TRUE;
}
/*******************************************************************************
**
** Function btc_a2dp_sink_rx_flush
**
** Description
**
** Returns void
**
*******************************************************************************/
static void btc_a2dp_sink_rx_flush(void)
{
/* Flush all enqueued SBC buffers (encoded) */
APPL_TRACE_DEBUG("btc_a2dp_sink_rx_flush");
btc_a2dp_sink_flush_q(btc_aa_snk_cb.RxSbcQ);
}
static int btc_a2dp_sink_get_track_frequency(UINT8 frequency)
{
int freq = 48000;
switch (frequency) {
case A2D_SBC_IE_SAMP_FREQ_16:
freq = 16000;
break;
case A2D_SBC_IE_SAMP_FREQ_32:
freq = 32000;
break;
case A2D_SBC_IE_SAMP_FREQ_44:
freq = 44100;
break;
case A2D_SBC_IE_SAMP_FREQ_48:
freq = 48000;
break;
}
return freq;
}
static int btc_a2dp_sink_get_track_channel_count(UINT8 channeltype)
{
int count = 1;
switch (channeltype) {
case A2D_SBC_IE_CH_MD_MONO:
count = 1;
break;
case A2D_SBC_IE_CH_MD_DUAL:
case A2D_SBC_IE_CH_MD_STEREO:
case A2D_SBC_IE_CH_MD_JOINT:
count = 2;
break;
}
return count;
}
/*******************************************************************************
**
** Function btc_a2dp_sink_enque_buf
**
** Description This function is called by the av_co to fill A2DP Sink Queue
**
**
** Returns size of the queue
*******************************************************************************/
UINT8 btc_a2dp_sink_enque_buf(BT_HDR *p_pkt)
{
tBT_SBC_HDR *p_msg;
if (btc_a2dp_sink_state != BTC_A2DP_SINK_STATE_ON){
return 0;
}
if (btc_aa_snk_cb.rx_flush == TRUE) { /* Flush enabled, do not enque*/
return fixed_queue_length(btc_aa_snk_cb.RxSbcQ);
}
if (fixed_queue_length(btc_aa_snk_cb.RxSbcQ) >= MAX_OUTPUT_A2DP_SNK_FRAME_QUEUE_SZ) {
APPL_TRACE_WARNING("Pkt dropped\n");
return fixed_queue_length(btc_aa_snk_cb.RxSbcQ);
}
APPL_TRACE_DEBUG("btc_a2dp_sink_enque_buf + ");
/* allocate and Queue this buffer */
if ((p_msg = (tBT_SBC_HDR *) osi_malloc(sizeof(tBT_SBC_HDR) +
p_pkt->offset + p_pkt->len)) != NULL) {
memcpy(p_msg, p_pkt, (sizeof(BT_HDR) + p_pkt->offset + p_pkt->len));
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(btc_aa_snk_cb.RxSbcQ, p_msg);
btc_a2dp_sink_data_post(BTC_A2DP_SINK_DATA_EVT);
} else {
/* let caller deal with a failed allocation */
APPL_TRACE_WARNING("btc_a2dp_sink_enque_buf No Buffer left - ");
}
return fixed_queue_length(btc_aa_snk_cb.RxSbcQ);
}
static void btc_a2dp_sink_handle_clear_track (void)
{
APPL_TRACE_DEBUG("%s", __FUNCTION__);
}
/*******************************************************************************
**
** Function btc_a2dp_sink_flush_q
**
** Description
**
** Returns void
**
*******************************************************************************/
static void btc_a2dp_sink_flush_q(fixed_queue_t *p_q)
{
while (! fixed_queue_is_empty(p_q)) {
osi_free(fixed_queue_try_dequeue(p_q));
}
}
static void btc_a2dp_sink_thread_init(UNUSED_ATTR void *context)
{
APPL_TRACE_EVENT("%s\n", __func__);
memset(&btc_aa_snk_cb, 0, sizeof(btc_aa_snk_cb));
btc_a2dp_sink_state = BTC_A2DP_SINK_STATE_ON;
btc_aa_snk_cb.RxSbcQ = fixed_queue_new(SIZE_MAX);
btc_a2dp_control_init();
}
static void btc_a2dp_sink_thread_cleanup(UNUSED_ATTR void *context)
{
btc_a2dp_control_set_datachnl_stat(FALSE);
/* Clear task flag */
btc_a2dp_sink_state = BTC_A2DP_SINK_STATE_OFF;
btc_a2dp_control_cleanup();
fixed_queue_free(btc_aa_snk_cb.RxSbcQ, osi_free_func);
future_ready(btc_a2dp_sink_future, NULL);
}
#endif /* BTC_AV_SINK_INCLUDED */
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