bt/btif/include/btif_av.h

/******************************************************************************
 *
 *  Copyright (C) 2009-2012 Broadcom Corporation
 *
 *  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:      btif_av.h
 *
 *  Description:   Main API header file for all BTIF AV functions accessed
 *                 from internal stack.
 *
 *******************************************************************************/

#ifndef BTIF_AV_H
#define BTIF_AV_H

#include "bta_av_api.h"
#include "btif_common.h"
#include "btif_sm.h"

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

typedef enum {
  /* Reuse BTA_AV_XXX_EVT - No need to redefine them here */
  BTIF_AV_CONNECT_REQ_EVT = BTA_AV_MAX_EVT,
  BTIF_AV_DISCONNECT_REQ_EVT,
  BTIF_AV_START_STREAM_REQ_EVT,
  BTIF_AV_STOP_STREAM_REQ_EVT,
  BTIF_AV_SUSPEND_STREAM_REQ_EVT,
  BTIF_AV_SINK_CONFIG_REQ_EVT,
  BTIF_AV_OFFLOAD_START_REQ_EVT,
  BTIF_AV_CLEANUP_REQ_EVT,
} btif_av_sm_event_t;

/*******************************************************************************
 *  BTIF AV API
 *******************************************************************************/

/*******************************************************************************
 *
 * Function         btif_av_get_addr
 *
 * Description      Fetches current AV BD address
 *
 * Returns          BD address
 *
 ******************************************************************************/

bt_bdaddr_t btif_av_get_addr(void);

/*******************************************************************************
 * Function         btif_av_is_sink_enabled
 *
 * Description      Checks if A2DP Sink is enabled or not
 *
 * Returns          true if A2DP Sink is enabled, false otherwise
 *
 ******************************************************************************/

bool btif_av_is_sink_enabled(void);

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

bool btif_av_stream_ready(void);

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

bool btif_av_stream_started_ready(void);

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

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

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

bt_status_t btif_av_init(int service_id);

/*******************************************************************************
 *
 * Function         btif_av_is_connected
 *
 * Description      Checks if av has a connected sink
 *
 * Returns          bool
 *
 ******************************************************************************/

bool btif_av_is_connected(void);

/*******************************************************************************
 *
 * Function         btif_av_get_peer_sep
 *
 * Description      Get the stream endpoint type.
 *
 * Returns          The stream endpoint type: either AVDT_TSEP_SRC or
 *                  AVDT_TSEP_SNK.
 *
 ******************************************************************************/

uint8_t btif_av_get_peer_sep(void);

/*******************************************************************************
 *
 * Function         btif_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
 *
 ******************************************************************************/

bool btif_av_is_peer_edr(void);

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

/*******************************************************************************
 *
 * Function         btif_av_peer_supports_3mbps
 *
 * Description      Check if the connected A2DP device supports
 *                  3 Mbps EDR. This function will only work while connected.
 *                  If not connected it will always return false.
 *
 * Returns          true if remote device is EDR and supports 3 Mbps
 *
 ******************************************************************************/
bool btif_av_peer_supports_3mbps(void);

#endif /* BTIF_AV_H */