esp-idf/components/bt/bluedroid/btc/profile/std/include/btc_av.h

// 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.


/*******************************************************************************
 *
 *  Filename:      btc_av.h
 *
 *  Description:   Main API header file for all BTC AV functions accessed
 *                 from internal stack.
 *
 *******************************************************************************/

#ifndef __BTC_AV_H__
#define __BTC_AV_H__

#include "esp_a2dp_api.h"
#include "btc_task.h"
#include "btif_common.h"
#include "btc_sm.h"
#include "bta_av_api.h"


/*******************************************************************************
**  Type definitions for callback functions
********************************************************************************/

typedef enum {
    BTC_AV_CONNECT_REQ_EVT = BTA_AV_MAX_EVT,
    BTC_AV_DISCONNECT_REQ_EVT,
    BTC_AV_START_STREAM_REQ_EVT,
    BTC_AV_STOP_STREAM_REQ_EVT,
    BTC_AV_SUSPEND_STREAM_REQ_EVT,
    BTC_AV_SINK_CONFIG_REQ_EVT
} btc_av_sm_event_t;

/* btc_av_args_t */
typedef union {
    // BTC_AV_SINK_CONFIG_REQ_EVT
    esp_a2d_mcc_t mcc;
    // BTC_AV_DISCONNECT_REQ_EVT
    bt_bdaddr_t disconnect;
    // Event set--tBTA_AV_EVT
    tBTA_AV data;
} btc_av_args_t;

/*******************************************************************************
**  BTC AV API
********************************************************************************/

void btc_a2dp_evt_handler(btc_msg_t *msg);

/*******************************************************************************
**
** Function         btc_av_get_sm_handle
**
** Description      Fetches current av SM handle
**
** Returns          None
**
*******************************************************************************/

btc_sm_handle_t btc_av_get_sm_handle(void);

/*******************************************************************************
**
** Function         btc_av_stream_ready
**
** Description      Checks whether AV is ready for starting a stream
**
** Returns          None
**
*******************************************************************************/

BOOLEAN btc_av_stream_ready(void);

/*******************************************************************************
**
** Function         btc_av_stream_started_ready
**
** Description      Checks whether AV ready for media start in streaming state
**
** Returns          None
**
*******************************************************************************/

BOOLEAN btc_av_stream_started_ready(void);

/*******************************************************************************
**
** Function         btc_dispatch_sm_event
**
** Description      Send event to AV statemachine
**
** Returns          None
**
*******************************************************************************/

/* used to pass events to AV statemachine from other tasks */
void btc_dispatch_sm_event(btc_av_sm_event_t event, void *p_data, int len);

/*******************************************************************************
**
** Function         btc_av_init
**
** Description      Initializes btif AV if not already done
**
** Returns          bt_status_t
**
*******************************************************************************/

bt_status_t btc_av_init(void);

/*******************************************************************************
**
** Function         btc_av_is_connected
**
** Description      Checks if av has a connected sink
**
** Returns          BOOLEAN
**
*******************************************************************************/

BOOLEAN btc_av_is_connected(void);


/*******************************************************************************
**
** Function         btc_av_is_peer_edr
**
** Description      Check if the connected a2dp device supports
**                  EDR or not. Only when connected this function
**                  will accurately provide a true capability of
**                  remote peer. If not connected it will always be false.
**
** Returns          TRUE if remote device is capable of EDR
**
*******************************************************************************/

BOOLEAN btc_av_is_peer_edr(void);

/******************************************************************************
**
** Function         btc_av_clear_remote_suspend_flag
**
** Description      Clears remote suspended flag
**
** Returns          Void
********************************************************************************/
void btc_av_clear_remote_suspend_flag(void);

#endif /* __BTC_AV_H__ */