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android / platform / system / bt / a632a66b81ee4b1db65d0cf64b4ce525f56214ff / . / bta / include / bta_av_api.h
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/******************************************************************************
*
* Copyright 2004-2012 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.
*
******************************************************************************/
/******************************************************************************
*
* This is the public interface file for the advanced audio/video streaming
* (AV) subsystem of BTA, Broadcom's Bluetooth application layer for mobile
* phones.
*
******************************************************************************/
#ifndef BTA_AV_API_H
#define BTA_AV_API_H
#include "a2dp_codec_api.h"
#include "avdt_api.h"
#include "avrc_api.h"
#include "bta_api.h"
/*****************************************************************************
* Constants and data types
****************************************************************************/
/* Set to TRUE if seperate authorization prompt desired for AVCTP besides A2DP
* authorization */
/* Typically FALSE when AVRCP is used in conjunction with A2DP */
#ifndef BTA_AV_WITH_AVCTP_AUTHORIZATION
#define BTA_AV_WITH_AVCTP_AUTHORIZATION FALSE
#endif
/* AV status values */
#define BTA_AV_SUCCESS 0 /* successful operation */
#define BTA_AV_FAIL 1 /* generic failure */
#define BTA_AV_FAIL_SDP 2 /* service not found */
#define BTA_AV_FAIL_STREAM 3 /* stream connection failed */
#define BTA_AV_FAIL_RESOURCES 4 /* no resources */
#define BTA_AV_FAIL_ROLE 5 /* failed due to role management related issues */
#define BTA_AV_FAIL_GET_CAP \
6 /* get capability failed due to no SEP availale on the peer */
typedef uint8_t tBTA_AV_STATUS;
/* AV features masks */
#define BTA_AV_FEAT_RCTG 0x0001 /* remote control target */
#define BTA_AV_FEAT_RCCT 0x0002 /* remote control controller */
#define BTA_AV_FEAT_PROTECT 0x0004 /* streaming media contect protection */
#define BTA_AV_FEAT_VENDOR \
0x0008 /* remote control vendor dependent commands \
*/
#define BTA_AV_FEAT_REPORT 0x0020 /* use reporting service for VDP */
#define BTA_AV_FEAT_METADATA \
0x0040 /* remote control Metadata Transfer command/response */
#define BTA_AV_FEAT_MULTI_AV \
0x0080 /* use multi-av, if controller supports it */
#define BTA_AV_FEAT_BROWSE 0x0010 /* use browsing channel */
#define BTA_AV_FEAT_MASTER 0x0100 /* stream only as master role */
#define BTA_AV_FEAT_ADV_CTRL \
0x0200 /* remote control Advanced Control command/response */
#define BTA_AV_FEAT_DELAY_RPT 0x0400 /* allow delay reporting */
#define BTA_AV_FEAT_ACP_START \
0x0800 /* start stream when 2nd SNK was accepted */
#define BTA_AV_FEAT_COVER_ARTWORK 0x1000 /* use cover art feature */
#define BTA_AV_FEAT_APP_SETTING 0x2000 /* Player app setting support */
/* Internal features */
#define BTA_AV_FEAT_NO_SCO_SSPD \
0x8000 /* Do not suspend av streaming as to AG events(SCO or Call) */
typedef uint16_t tBTA_AV_FEAT;
/* AV channel values */
#define BTA_AV_CHNL_MSK 0xC0
#define BTA_AV_CHNL_AUDIO 0x40 /* audio channel */
#define BTA_AV_CHNL_VIDEO 0x80 /* video channel */
typedef uint8_t tBTA_AV_CHNL;
#define BTA_AV_HNDL_MSK 0x3F
typedef uint8_t tBTA_AV_HNDL;
/* handle index to mask */
#define BTA_AV_HNDL_TO_MSK(h) ((uint8_t)(1 << (h)))
/* maximum number of streams created */
#ifndef BTA_AV_NUM_STRS
#define BTA_AV_NUM_STRS 6
#endif
/* operation id list for BTA_AvRemoteCmd */
typedef uint8_t tBTA_AV_RC;
/* state flag for pass through command */
typedef uint8_t tBTA_AV_STATE;
/* command codes for BTA_AvVendorCmd */
typedef uint8_t tBTA_AV_CMD;
/* response codes for BTA_AvVendorRsp */
typedef uint8_t tBTA_AV_CODE;
/* error codes for BTA_AvProtectRsp */
typedef uint8_t tBTA_AV_ERR;
/* AV callback events */
#define BTA_AV_ENABLE_EVT 0 /* AV enabled */
#define BTA_AV_REGISTER_EVT 1 /* registered to AVDT */
#define BTA_AV_OPEN_EVT 2 /* connection opened */
#define BTA_AV_CLOSE_EVT 3 /* connection closed */
#define BTA_AV_START_EVT 4 /* stream data transfer started */
#define BTA_AV_STOP_EVT 5 /* stream data transfer stopped */
#define BTA_AV_PROTECT_REQ_EVT 6 /* content protection request */
#define BTA_AV_PROTECT_RSP_EVT 7 /* content protection response */
#define BTA_AV_RC_OPEN_EVT 8 /* remote control channel open */
#define BTA_AV_RC_CLOSE_EVT 9 /* remote control channel closed */
#define BTA_AV_REMOTE_CMD_EVT 10 /* remote control command */
#define BTA_AV_REMOTE_RSP_EVT 11 /* remote control response */
#define BTA_AV_VENDOR_CMD_EVT 12 /* vendor dependent remote control command */
#define BTA_AV_VENDOR_RSP_EVT \
13 /* vendor dependent remote control response \
*/
#define BTA_AV_RECONFIG_EVT 14 /* reconfigure response */
#define BTA_AV_SUSPEND_EVT 15 /* suspend response */
#define BTA_AV_PENDING_EVT \
16 /* incoming connection pending: \
* signal channel is open and stream is \
* not open after \
* BTA_AV_SIGNALLING_TIMEOUT_MS */
#define BTA_AV_META_MSG_EVT 17 /* metadata messages */
#define BTA_AV_REJECT_EVT 18 /* incoming connection rejected */
#define BTA_AV_RC_FEAT_EVT \
19 /* remote control channel peer supported features update */
#define BTA_AV_SINK_MEDIA_CFG_EVT 20 /* command to configure codec */
#define BTA_AV_SINK_MEDIA_DATA_EVT 21 /* sending data to Media Task */
#define BTA_AV_OFFLOAD_START_RSP_EVT 22 /* a2dp offload start response */
#define BTA_AV_RC_BROWSE_OPEN_EVT 23 /* remote control channel open */
#define BTA_AV_RC_BROWSE_CLOSE_EVT 24 /* remote control channel closed */
#define BTA_AV_RC_PSM_EVT 25 /* cover art psm update */
/* Max BTA event */
#define BTA_AV_MAX_EVT 26
typedef uint8_t tBTA_AV_EVT;
typedef enum {
BTA_AV_CODEC_TYPE_UNKNOWN = 0x00,
BTA_AV_CODEC_TYPE_SBC = 0x01,
BTA_AV_CODEC_TYPE_AAC = 0x02,
BTA_AV_CODEC_TYPE_APTX = 0x04,
BTA_AV_CODEC_TYPE_APTXHD = 0x08,
BTA_AV_CODEC_TYPE_LDAC = 0x10
} tBTA_AV_CODEC_TYPE;
/* Event associated with BTA_AV_ENABLE_EVT */
typedef struct { tBTA_AV_FEAT features; } tBTA_AV_ENABLE;
/* Event associated with BTA_AV_REGISTER_EVT */
typedef struct {
tBTA_AV_CHNL chnl; /* audio/video */
tBTA_AV_HNDL hndl; /* Handle associated with the stream. */
uint8_t app_id; /* ID associated with call to BTA_AvRegister() */
tBTA_AV_STATUS status;
} tBTA_AV_REGISTER;
/* data associated with BTA_AV_OPEN_EVT */
#define BTA_AV_EDR_2MBPS 0x01
#define BTA_AV_EDR_3MBPS 0x02
typedef uint8_t tBTA_AV_EDR;
typedef struct {
tBTA_AV_CHNL chnl;
tBTA_AV_HNDL hndl;
RawAddress bd_addr;
tBTA_AV_STATUS status;
bool starting;
tBTA_AV_EDR edr; /* 0, if peer device does not support EDR */
uint8_t sep; /* sep type of peer device */
} tBTA_AV_OPEN;
/* data associated with BTA_AV_CLOSE_EVT */
typedef struct {
tBTA_AV_CHNL chnl;
tBTA_AV_HNDL hndl;
} tBTA_AV_CLOSE;
/* data associated with BTA_AV_START_EVT */
typedef struct {
tBTA_AV_CHNL chnl;
tBTA_AV_HNDL hndl;
tBTA_AV_STATUS status;
bool initiator; /* true, if local device initiates the START */
bool suspending;
} tBTA_AV_START;
/* data associated with BTA_AV_SUSPEND_EVT, BTA_AV_STOP_EVT */
typedef struct {
tBTA_AV_CHNL chnl;
tBTA_AV_HNDL hndl;
bool initiator; /* true, if local device initiates the SUSPEND */
tBTA_AV_STATUS status;
} tBTA_AV_SUSPEND;
/* data associated with BTA_AV_RECONFIG_EVT */
typedef struct {
tBTA_AV_CHNL chnl;
tBTA_AV_HNDL hndl;
tBTA_AV_STATUS status;
} tBTA_AV_RECONFIG;
/* data associated with BTA_AV_PROTECT_REQ_EVT */
typedef struct {
tBTA_AV_CHNL chnl;
tBTA_AV_HNDL hndl;
uint8_t* p_data;
uint16_t len;
} tBTA_AV_PROTECT_REQ;
/* data associated with BTA_AV_PROTECT_RSP_EVT */
typedef struct {
tBTA_AV_CHNL chnl;
tBTA_AV_HNDL hndl;
uint8_t* p_data;
uint16_t len;
tBTA_AV_ERR err_code;
} tBTA_AV_PROTECT_RSP;
/* data associated with BTA_AV_RC_OPEN_EVT */
typedef struct {
uint8_t rc_handle;
uint16_t cover_art_psm;
tBTA_AV_FEAT peer_features;
RawAddress peer_addr;
tBTA_AV_STATUS status;
} tBTA_AV_RC_OPEN;
/* data associated with BTA_AV_RC_CLOSE_EVT */
typedef struct {
uint8_t rc_handle;
RawAddress peer_addr;
} tBTA_AV_RC_CLOSE;
/* data associated with BTA_AV_RC_BROWSE_OPEN_EVT */
typedef struct {
uint8_t rc_handle;
RawAddress peer_addr;
tBTA_AV_STATUS status;
} tBTA_AV_RC_BROWSE_OPEN;
/* data associated with BTA_AV_RC_BROWSE_CLOSE_EVT */
typedef struct {
uint8_t rc_handle;
RawAddress peer_addr;
} tBTA_AV_RC_BROWSE_CLOSE;
/* data associated with BTA_AV_RC_FEAT_EVT */
typedef struct {
uint8_t rc_handle;
tBTA_AV_FEAT peer_features;
RawAddress peer_addr;
} tBTA_AV_RC_FEAT;
/* data associated with BTA_AV_RC_PSM_EVT */
typedef struct {
uint8_t rc_handle;
uint16_t cover_art_psm;
RawAddress peer_addr;
} tBTA_AV_RC_PSM;
/* data associated with BTA_AV_REMOTE_CMD_EVT */
typedef struct {
uint8_t rc_handle;
tBTA_AV_RC rc_id;
tBTA_AV_STATE key_state;
uint8_t len;
uint8_t* p_data;
tAVRC_HDR hdr; /* Message header. */
uint8_t label;
} tBTA_AV_REMOTE_CMD;
/* data associated with BTA_AV_REMOTE_RSP_EVT */
typedef struct {
uint8_t rc_handle;
tBTA_AV_RC rc_id;
tBTA_AV_STATE key_state;
uint8_t len;
uint8_t* p_data;
tBTA_AV_CODE rsp_code;
uint8_t label;
} tBTA_AV_REMOTE_RSP;
/* data associated with BTA_AV_VENDOR_CMD_EVT, BTA_AV_VENDOR_RSP_EVT */
typedef struct {
uint8_t rc_handle;
uint16_t len; /* Max vendor dependent message is 512 */
uint8_t label;
tBTA_AV_CODE code;
uint32_t company_id;
uint8_t* p_data;
} tBTA_AV_VENDOR;
/* data associated with BTA_AV_META_MSG_EVT */
typedef struct {
uint8_t rc_handle;
uint16_t len;
uint8_t label;
tBTA_AV_CODE code;
uint32_t company_id;
uint8_t* p_data;
tAVRC_MSG* p_msg;
} tBTA_AV_META_MSG;
/* data associated with BTA_AV_PENDING_EVT */
typedef struct { RawAddress bd_addr; } tBTA_AV_PEND;
/* data associated with BTA_AV_REJECT_EVT */
typedef struct {
RawAddress bd_addr;
tBTA_AV_HNDL hndl; /* Handle associated with the stream that rejected the
connection. */
} tBTA_AV_REJECT;
/* union of data associated with AV callback */
typedef union {
tBTA_AV_CHNL chnl;
tBTA_AV_ENABLE enable;
tBTA_AV_REGISTER registr;
tBTA_AV_OPEN open;
tBTA_AV_CLOSE close;
tBTA_AV_START start;
tBTA_AV_PROTECT_REQ protect_req;
tBTA_AV_PROTECT_RSP protect_rsp;
tBTA_AV_RC_OPEN rc_open;
tBTA_AV_RC_CLOSE rc_close;
tBTA_AV_RC_BROWSE_OPEN rc_browse_open;
tBTA_AV_RC_BROWSE_CLOSE rc_browse_close;
tBTA_AV_REMOTE_CMD remote_cmd;
tBTA_AV_REMOTE_RSP remote_rsp;
tBTA_AV_VENDOR vendor_cmd;
tBTA_AV_VENDOR vendor_rsp;
tBTA_AV_RECONFIG reconfig;
tBTA_AV_SUSPEND suspend;
tBTA_AV_PEND pend;
tBTA_AV_META_MSG meta_msg;
tBTA_AV_REJECT reject;
tBTA_AV_RC_FEAT rc_feat;
tBTA_AV_RC_PSM rc_cover_art_psm;
tBTA_AV_STATUS status;
} tBTA_AV;
typedef struct {
uint8_t* codec_info;
RawAddress bd_addr;
} tBTA_AVK_CONFIG;
/* union of data associated with AV Media callback */
typedef union {
BT_HDR* p_data;
tBTA_AVK_CONFIG avk_config;
} tBTA_AV_MEDIA;
#define BTA_GROUP_NAVI_MSG_OP_DATA_LEN 5
/* AV callback */
typedef void(tBTA_AV_CBACK)(tBTA_AV_EVT event, tBTA_AV* p_data);
typedef void(tBTA_AV_SINK_DATA_CBACK)(const RawAddress&, tBTA_AV_EVT event,
tBTA_AV_MEDIA* p_data);
/* type for stream state machine action functions */
struct tBTA_AV_SCB;
union tBTA_AV_DATA;
typedef void (*tBTA_AV_ACT)(tBTA_AV_SCB* p_cb, tBTA_AV_DATA* p_data);
/* AV configuration structure */
typedef struct {
uint32_t company_id; /* AVRCP Company ID */
uint16_t avrc_mtu; /* AVRCP MTU at L2CAP for control channel */
uint16_t avrc_br_mtu; /* AVRCP MTU at L2CAP for browsing channel */
uint16_t avrc_ct_cat; /* AVRCP controller categories */
uint16_t avrc_tg_cat; /* AVRCP target categories */
uint16_t sig_mtu; /* AVDTP signaling channel MTU at L2CAP */
uint16_t audio_mtu; /* AVDTP audio transport channel MTU at L2CAP */
const uint16_t*
p_audio_flush_to; /* AVDTP audio transport channel flush timeout */
uint16_t audio_mqs; /* AVDTP audio channel max data queue size */
bool avrc_group; /* true, to accept AVRC 1.3 group nevigation command */
uint8_t num_co_ids; /* company id count in p_meta_co_ids */
uint8_t num_evt_ids; /* event id count in p_meta_evt_ids */
tBTA_AV_CODE
rc_pass_rsp; /* the default response code for pass through commands */
const uint32_t*
p_meta_co_ids; /* the metadata Get Capabilities response for company id */
const uint8_t* p_meta_evt_ids; /* the the metadata Get Capabilities response
for event id */
const tBTA_AV_ACT* p_act_tbl; /* action function table for audio stream */
char avrc_controller_name[BTA_SERVICE_NAME_LEN]; /* Default AVRCP controller
name */
char avrc_target_name[BTA_SERVICE_NAME_LEN]; /* Default AVRCP target name*/
} tBTA_AV_CFG;
/*****************************************************************************
* External Function Declarations
****************************************************************************/
/*******************************************************************************
*
* Function BTA_AvEnable
*
* Description Enable the advanced audio/video service. When the enable
* operation is complete the callback function will be
* called with a BTA_AV_ENABLE_EVT. This function must
* be called before other function in the AV API are
* called.
*
* Returns void
*
******************************************************************************/
void BTA_AvEnable(tBTA_SEC sec_mask, tBTA_AV_FEAT features,
tBTA_AV_CBACK* p_cback);
/*******************************************************************************
*
* Function BTA_AvDisable
*
* Description Disable the advanced audio/video service.
*
*
* Returns void
*
******************************************************************************/
void BTA_AvDisable(void);
/*******************************************************************************
*
* Function BTA_AvRegister
*
* Description Register the audio or video service to stack. When the
* operation is complete the callback function will be
* called with a BTA_AV_REGISTER_EVT. This function must
* be called before AVDT stream is open.
*
*
* Returns void
*
******************************************************************************/
void BTA_AvRegister(tBTA_AV_CHNL chnl, const char* p_service_name,
uint8_t app_id, tBTA_AV_SINK_DATA_CBACK* p_sink_data_cback,
uint16_t service_uuid);
/*******************************************************************************
*
* Function BTA_AvDeregister
*
* Description Deregister the audio or video service
*
* Returns void
*
******************************************************************************/
void BTA_AvDeregister(tBTA_AV_HNDL hndl);
/*******************************************************************************
*
* Function BTA_AvOpen
*
* Description Opens an advanced audio/video connection to a peer device.
* When connection is open callback function is called
* with a BTA_AV_OPEN_EVT.
*
* Returns void
*
******************************************************************************/
void BTA_AvOpen(const RawAddress& bd_addr, tBTA_AV_HNDL handle, bool use_rc,
tBTA_SEC sec_mask, uint16_t uuid);
/*******************************************************************************
*
* Function BTA_AvClose
*
* Description Close the current streams.
*
* Returns void
*
******************************************************************************/
void BTA_AvClose(tBTA_AV_HNDL handle);
/*******************************************************************************
*
* Function BTA_AvDisconnect
*
* Description Close the connection to the address.
*
* Returns void
*
******************************************************************************/
void BTA_AvDisconnect(const RawAddress& bd_addr);
/*******************************************************************************
*
* Function BTA_AvStart
*
* Description Start audio/video stream data transfer.
*
* Returns void
*
******************************************************************************/
void BTA_AvStart(tBTA_AV_HNDL handle);
/*******************************************************************************
*
* Function BTA_AvStop
*
* Description Stop audio/video stream data transfer.
* If suspend is true, this function sends AVDT suspend signal
* to the connected peer(s).
*
* Returns void
*
******************************************************************************/
void BTA_AvStop(tBTA_AV_HNDL handle, bool suspend);
/*******************************************************************************
*
* Function BTA_AvReconfig
*
* Description Reconfigure the audio/video stream.
* If suspend is true, this function tries the
* suspend/reconfigure procedure first.
* If suspend is false or when suspend/reconfigure fails,
* this function closes and re-opens the AVDT connection.
*
* Returns void
*
******************************************************************************/
void BTA_AvReconfig(tBTA_AV_HNDL hndl, bool suspend, uint8_t sep_info_idx,
uint8_t* p_codec_info, uint8_t num_protect,
const uint8_t* p_protect_info);
/*******************************************************************************
*
* Function BTA_AvProtectReq
*
* Description Send a content protection request. This function can only
* be used if AV is enabled with feature BTA_AV_FEAT_PROTECT.
*
* Returns void
*
******************************************************************************/
void BTA_AvProtectReq(tBTA_AV_HNDL hndl, uint8_t* p_data, uint16_t len);
/*******************************************************************************
*
* Function BTA_AvProtectRsp
*
* Description Send a content protection response. This function must
* be called if a BTA_AV_PROTECT_REQ_EVT is received.
* This function can only be used if AV is enabled with
* feature BTA_AV_FEAT_PROTECT.
*
* Returns void
*
******************************************************************************/
void BTA_AvProtectRsp(tBTA_AV_HNDL hndl, uint8_t error_code, uint8_t* p_data,
uint16_t len);
/*******************************************************************************
*
* Function BTA_AvRemoteCmd
*
* Description Send a remote control command. This function can only
* be used if AV is enabled with feature BTA_AV_FEAT_RCCT.
*
* Returns void
*
******************************************************************************/
void BTA_AvRemoteCmd(uint8_t rc_handle, uint8_t label, tBTA_AV_RC rc_id,
tBTA_AV_STATE key_state);
/*******************************************************************************
*
* Function BTA_AvRemoteVendorUniqueCmd
*
* Description Send a remote control command with Vendor Unique rc_id.
* This function can only be used if AV is enabled with
* feature BTA_AV_FEAT_RCCT.
*
* Returns void
*
******************************************************************************/
void BTA_AvRemoteVendorUniqueCmd(uint8_t rc_handle, uint8_t label,
tBTA_AV_STATE key_state, uint8_t* p_msg,
uint8_t buf_len);
/*******************************************************************************
*
* Function BTA_AvVendorCmd
*
* Description Send a vendor dependent remote control command. This
* function can only be used if AV is enabled with feature
* BTA_AV_FEAT_VENDOR.
*
* Returns void
*
******************************************************************************/
void BTA_AvVendorCmd(uint8_t rc_handle, uint8_t label, tBTA_AV_CODE cmd_code,
uint8_t* p_data, uint16_t len);
/*******************************************************************************
*
* Function BTA_AvVendorRsp
*
* Description Send a vendor dependent remote control response.
* This function must be called if a BTA_AV_VENDOR_CMD_EVT
* is received. This function can only be used if AV is
* enabled with feature BTA_AV_FEAT_VENDOR.
*
* Returns void
*
******************************************************************************/
void BTA_AvVendorRsp(uint8_t rc_handle, uint8_t label, tBTA_AV_CODE rsp_code,
uint8_t* p_data, uint16_t len, uint32_t company_id);
/*******************************************************************************
*
* Function BTA_AvOpenRc
*
* Description Open an AVRCP connection toward the device with the
* specified handle
*
* Returns void
*
******************************************************************************/
void BTA_AvOpenRc(tBTA_AV_HNDL handle);
/*******************************************************************************
*
* Function BTA_AvCloseRc
*
* Description Close an AVRCP connection
*
* Returns void
*
******************************************************************************/
void BTA_AvCloseRc(uint8_t rc_handle);
/*******************************************************************************
*
* Function BTA_AvMetaRsp
*
* Description Send a Metadata command/response. The message contained
* in p_pkt can be composed with AVRC utility functions.
* This function can only be used if AV is enabled with feature
* BTA_AV_FEAT_METADATA.
*
* Returns void
*
******************************************************************************/
void BTA_AvMetaRsp(uint8_t rc_handle, uint8_t label, tBTA_AV_CODE rsp_code,
BT_HDR* p_pkt);
/*******************************************************************************
*
* Function BTA_AvMetaCmd
*
* Description Send a Metadata/Advanced Control command. The message
*contained
* in p_pkt can be composed with AVRC utility functions.
* This function can only be used if AV is enabled with feature
* BTA_AV_FEAT_METADATA.
* This message is sent only when the peer supports the TG
*role.
*8 The only command makes sense right now is the absolute
*volume command.
*
* Returns void
*
******************************************************************************/
void BTA_AvMetaCmd(uint8_t rc_handle, uint8_t label, tBTA_AV_CMD cmd_code,
BT_HDR* p_pkt);
/*******************************************************************************
*
* Function BTA_AvOffloadStart
*
* Description Request Starting of A2DP Offload.
* This function is used to start A2DP offload if vendor lib
* has the feature enabled.
*
* Returns void
*
******************************************************************************/
void BTA_AvOffloadStart(tBTA_AV_HNDL hndl);
/*******************************************************************************
*
* Function BTA_AvOffloadStartRsp
*
* Description Response from vendor library indicating response for
* OffloadStart.
*
* Returns void
*
******************************************************************************/
void BTA_AvOffloadStartRsp(tBTA_AV_HNDL hndl, tBTA_AV_STATUS status);
/**
* Obtain the Channel Index for a peer.
* If the peer already has associated internal state, the corresponding
* Channel Index for that state is returned. Otherwise, the Channel Index
* for unused internal state is returned instead.
*
* @param peer_address the peer address
* @return the peer Channel Index index if obtained, otherwise -1
*/
int BTA_AvObtainPeerChannelIndex(const RawAddress& peer_address);
/**
* Dump debug-related information for the BTA AV module.
*
* @param fd the file descriptor to use for writing the ASCII formatted
* information
*/
void bta_debug_av_dump(int fd);
#endif /* BTA_AV_API_H */