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components/bt/host/bluedroid/btc/profile/std/a2dp/btc_a2dp_control.c
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/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
/*****************************************************************************
*
* Filename: btc_a2dp_control.c
*
*****************************************************************************/
#include "common/bt_target.h"
#include <string.h>
#include "common/bt_trace.h"
#include "bta/bta_api.h"
#include "bta/bta_av_api.h"
#include "btc/btc_manage.h"
#include "btc_av.h"
#include "btc_a2dp.h"
#include "btc_a2dp_control.h"
#include "btc_a2dp_sink.h"
#include "btc_a2dp_source.h"
#include "esp_a2dp_api.h"
#if BTC_AV_INCLUDED
typedef struct {
BOOLEAN data_channel_open; /* used only by A2DP sink */
UINT8 a2dp_cmd_pending; /* we can have max one command pending */
} tBTC_AA_CTRL_CB;
static tBTC_AA_CTRL_CB btc_aa_ctrl_cb;
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_a2d_cb = (esp_a2d_cb_t)btc_profile_cb_get(BTC_PID_A2DP);
if (btc_a2d_cb) {
btc_a2d_cb(event, param);
}
}
static inline void a2dp_cmd_acknowledge(int cmd, int status)
{
esp_a2d_cb_param_t param;
param.media_ctrl_stat.cmd = cmd;
param.media_ctrl_stat.status = status;
btc_a2d_cb_to_app(ESP_A2D_MEDIA_CTRL_ACK_EVT, ¶m);
}
void btc_a2dp_control_command_ack(int status)
{
/* sanity check */
if (btc_aa_ctrl_cb.a2dp_cmd_pending == ESP_A2D_MEDIA_CTRL_NONE) {
APPL_TRACE_ERROR("warning : no command pending, ignore ack");
return;
}
/* clear pending */
int cmd = btc_aa_ctrl_cb.a2dp_cmd_pending;
btc_aa_ctrl_cb.a2dp_cmd_pending = ESP_A2D_MEDIA_CTRL_NONE;
a2dp_cmd_acknowledge(cmd, status);
}
static void btc_a2dp_datapath_open(void)
{
#if BTC_AV_SRC_INCLUDED
if (btc_av_get_peer_sep() == AVDT_TSEP_SNK && btc_av_get_service_id() == BTA_A2DP_SOURCE_SERVICE_ID) {
/* Start the media task to encode SBC */
btc_a2dp_source_start_audio_req();
/* make sure we update any changed sbc encoder params */
btc_a2dp_source_encoder_update();
}
#endif
#if (BTC_AV_SINK_INCLUDED == TRUE)
btc_aa_ctrl_cb.data_channel_open = TRUE;
#endif
}
BOOLEAN btc_a2dp_control_get_datachnl_stat(void)
{
return btc_aa_ctrl_cb.data_channel_open;
}
void btc_a2dp_control_set_datachnl_stat(BOOLEAN open)
{
btc_aa_ctrl_cb.data_channel_open = open;
}
void btc_a2dp_control_media_ctrl(esp_a2d_media_ctrl_t ctrl)
{
APPL_TRACE_DEBUG("BTC MEDIA (A2DP-DATA) EVENT %u", ctrl);
if (btc_aa_ctrl_cb.a2dp_cmd_pending != ESP_A2D_MEDIA_CTRL_NONE) {
APPL_TRACE_WARNING("un-acked a2dp cmd: %u", btc_aa_ctrl_cb.a2dp_cmd_pending);
a2dp_cmd_acknowledge(ctrl, ESP_A2D_MEDIA_CTRL_ACK_BUSY);
return;
}
btc_aa_ctrl_cb.a2dp_cmd_pending = ctrl;
switch (ctrl) {
case ESP_A2D_MEDIA_CTRL_CHECK_SRC_RDY:
#if BTC_AV_SRC_INCLUDED
if (btc_av_get_service_id() == BTA_A2DP_SOURCE_SERVICE_ID) {
if (btc_a2dp_source_is_task_shutting_down()) {
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_FAILURE);
} else if ((btc_av_stream_ready() == TRUE) ||
(btc_av_stream_started_ready() == TRUE)) {
/* check whether av is ready to setup a2dp datapath */
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_SUCCESS);
} else {
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_FAILURE);
}
} else {
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_FAILURE);
}
#else /* BTC_AV_SRC_INCLUDED */
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_FAILURE);
#endif /* #if BTC_AV_SRC_INCLUDED */
break;
case ESP_A2D_MEDIA_CTRL_START:
if (btc_av_stream_ready() == TRUE ) {
/* post start event */
btc_dispatch_sm_event(BTC_AV_START_STREAM_REQ_EVT, NULL, 0);
#if (BTC_AV_SINK_INCLUDED == TRUE)
if (btc_av_get_peer_sep() == AVDT_TSEP_SRC && btc_av_get_service_id() == BTA_A2DP_SINK_SERVICE_ID) {
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_SUCCESS);
}
#endif
} else if (btc_av_stream_started_ready()) {
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_SUCCESS);
} else {
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_FAILURE);
}
break;
case ESP_A2D_MEDIA_CTRL_SUSPEND:
/* local suspend */
if (btc_av_stream_started_ready()) {
btc_dispatch_sm_event(BTC_AV_SUSPEND_STREAM_REQ_EVT, NULL, 0);
#if (BTC_AV_SINK_INCLUDED == TRUE)
if (btc_av_get_peer_sep() == AVDT_TSEP_SRC && btc_av_get_service_id() == BTA_A2DP_SINK_SERVICE_ID) {
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_SUCCESS);
}
#endif
} else if (btc_av_is_connected() == TRUE) {
/* we are not in started state; just ack back ok. This can happen if we are
remotely suspended; clear REMOTE SUSPEND Flag */
btc_av_clear_remote_suspend_flag();
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_SUCCESS);
} else {
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_FAILURE);
}
break;
default :
APPL_TRACE_ERROR("### A2DP-MEDIA EVENT %u NOT HANDLED ###", ctrl);
btc_a2dp_control_command_ack(ESP_A2D_MEDIA_CTRL_ACK_FAILURE);
break;
}
}
void btc_a2dp_control_datapath_ctrl(uint32_t dp_evt)
{
switch (dp_evt) {
case BTC_AV_DATAPATH_OPEN_EVT: {
btc_a2dp_datapath_open();
break;
}
default:
break;
}
return;
}
bool btc_a2dp_control_init(void)
{
memset(&btc_aa_ctrl_cb, 0, sizeof(tBTC_AA_CTRL_CB));
return true;
}
void btc_a2dp_control_cleanup(void)
{
memset(&btc_aa_ctrl_cb, 0, sizeof(tBTC_AA_CTRL_CB));
}
#endif /* #if BTC_AV_INCLUDED */
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