/******************************************************************************
*
* Copyright (C) 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 main implementation file for the BTA advanced audio/video.
*
******************************************************************************/
#define LOG_TAG "bt_bta_av"
#include <base/logging.h>
#include <string.h>
#include "bt_target.h"
#include "osi/include/log.h"
#include "osi/include/osi.h"
#include "osi/include/properties.h"
#include "bta_av_co.h"
#include "bta_av_int.h"
#include "btif/include/btif_av_co.h"
#include "l2c_api.h"
#include "l2cdefs.h"
#include "utl.h"
#if (BTA_AR_INCLUDED == TRUE)
#include "bta_ar_api.h"
#endif
/*****************************************************************************
* Constants and types
****************************************************************************/
#ifndef BTA_AV_RET_TOUT
#define BTA_AV_RET_TOUT 4
#endif
#ifndef BTA_AV_SIG_TOUT
#define BTA_AV_SIG_TOUT 4
#endif
#ifndef BTA_AV_IDLE_TOUT
#define BTA_AV_IDLE_TOUT 10
#endif
/* the delay time in milliseconds to retry role switch */
#ifndef BTA_AV_RS_TIME_VAL
#define BTA_AV_RS_TIME_VAL 1000
#endif
#ifndef AVRCP_VERSION_PROPERTY
#define AVRCP_VERSION_PROPERTY "persist.bluetooth.avrcpversion"
#endif
#ifndef AVRCP_1_6_STRING
#define AVRCP_1_6_STRING "avrcp16"
#endif
#ifndef AVRCP_1_5_STRING
#define AVRCP_1_5_STRING "avrcp15"
#endif
#ifndef AVRCP_1_4_STRING
#define AVRCP_1_4_STRING "avrcp14"
#endif
/* state machine states */
enum { BTA_AV_INIT_ST, BTA_AV_OPEN_ST };
/* state machine action enumeration list */
enum {
BTA_AV_DISABLE,
BTA_AV_RC_OPENED,
BTA_AV_RC_REMOTE_CMD,
BTA_AV_RC_VENDOR_CMD,
BTA_AV_RC_VENDOR_RSP,
BTA_AV_RC_FREE_RSP,
BTA_AV_RC_FREE_BROWSE_MSG,
BTA_AV_RC_META_RSP,
BTA_AV_RC_MSG,
BTA_AV_RC_CLOSE,
BTA_AV_RC_BROWSE_CLOSE,
BTA_AV_NUM_ACTIONS
};
#define BTA_AV_IGNORE BTA_AV_NUM_ACTIONS
/* type for action functions */
typedef void (*tBTA_AV_ACTION)(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data);
/* action functions */
const tBTA_AV_ACTION bta_av_action[] = {
bta_av_disable,
bta_av_rc_opened,
bta_av_rc_remote_cmd,
bta_av_rc_vendor_cmd,
bta_av_rc_vendor_rsp,
bta_av_rc_free_rsp,
bta_av_rc_free_browse_msg,
bta_av_rc_meta_rsp,
bta_av_rc_msg,
bta_av_rc_close,
};
/* state table information */
#define BTA_AV_ACTION_COL 0 /* position of actions */
#define BTA_AV_NEXT_STATE 1 /* position of next state */
#define BTA_AV_NUM_COLS 2 /* number of columns in state tables */
/* state table for init state */
static const uint8_t bta_av_st_init[][BTA_AV_NUM_COLS] = {
/* Event Action 1 Next state */
/* API_DISABLE_EVT */ {BTA_AV_DISABLE, BTA_AV_INIT_ST},
/* API_REMOTE_CMD_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
/* API_VENDOR_CMD_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
/* API_VENDOR_RSP_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
/* API_META_RSP_EVT */ {BTA_AV_RC_FREE_RSP, BTA_AV_INIT_ST},
/* API_RC_CLOSE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
/* AVRC_OPEN_EVT */ {BTA_AV_RC_OPENED, BTA_AV_OPEN_ST},
/* AVRC_MSG_EVT */ {BTA_AV_RC_FREE_BROWSE_MSG, BTA_AV_INIT_ST},
/* AVRC_NONE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
};
/* state table for open state */
static const uint8_t bta_av_st_open[][BTA_AV_NUM_COLS] = {
/* Event Action 1 Next state */
/* API_DISABLE_EVT */ {BTA_AV_DISABLE, BTA_AV_INIT_ST},
/* API_REMOTE_CMD_EVT */ {BTA_AV_RC_REMOTE_CMD, BTA_AV_OPEN_ST},
/* API_VENDOR_CMD_EVT */ {BTA_AV_RC_VENDOR_CMD, BTA_AV_OPEN_ST},
/* API_VENDOR_RSP_EVT */ {BTA_AV_RC_VENDOR_RSP, BTA_AV_OPEN_ST},
/* API_META_RSP_EVT */ {BTA_AV_RC_META_RSP, BTA_AV_OPEN_ST},
/* API_RC_CLOSE_EVT */ {BTA_AV_RC_CLOSE, BTA_AV_OPEN_ST},
/* AVRC_OPEN_EVT */ {BTA_AV_RC_OPENED, BTA_AV_OPEN_ST},
/* AVRC_MSG_EVT */ {BTA_AV_RC_MSG, BTA_AV_OPEN_ST},
/* AVRC_NONE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
};
/* type for state table */
typedef const uint8_t (*tBTA_AV_ST_TBL)[BTA_AV_NUM_COLS];
/* state table */
static const tBTA_AV_ST_TBL bta_av_st_tbl[] = {bta_av_st_init, bta_av_st_open};
typedef void (*tBTA_AV_NSM_ACT)(tBTA_AV_DATA* p_data);
static void bta_av_api_enable(tBTA_AV_DATA* p_data);
static void bta_av_api_register(tBTA_AV_DATA* p_data);
static void bta_av_ci_data(tBTA_AV_DATA* p_data);
#if (AVDT_REPORTING == TRUE)
static void bta_av_rpc_conn(tBTA_AV_DATA* p_data);
#endif
static void bta_av_api_to_ssm(tBTA_AV_DATA* p_data);
static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, uint8_t id,
uint8_t app_id, BD_ADDR peer_addr);
static void bta_av_sys_rs_cback(tBTA_SYS_CONN_STATUS status, uint8_t id,
uint8_t app_id, BD_ADDR peer_addr);
/* action functions */
const tBTA_AV_NSM_ACT bta_av_nsm_act[] = {
bta_av_api_enable, /* BTA_AV_API_ENABLE_EVT */
bta_av_api_register, /* BTA_AV_API_REGISTER_EVT */
bta_av_api_deregister, /* BTA_AV_API_DEREGISTER_EVT */
bta_av_api_disconnect, /* BTA_AV_API_DISCONNECT_EVT */
bta_av_ci_data, /* BTA_AV_CI_SRC_DATA_READY_EVT */
bta_av_sig_chg, /* BTA_AV_SIG_CHG_EVT */
bta_av_signalling_timer, /* BTA_AV_SIGNALLING_TIMER_EVT */
bta_av_rc_disc_done, /* BTA_AV_SDP_AVRC_DISC_EVT */
bta_av_rc_closed, /* BTA_AV_AVRC_CLOSE_EVT */
bta_av_rc_browse_opened, /* BTA_AV_AVRC_BROWSE_OPEN_EVT */
bta_av_rc_browse_closed, /* BTA_AV_AVRC_BROWSE_CLOSE_EVT */
bta_av_conn_chg, /* BTA_AV_CONN_CHG_EVT */
bta_av_dereg_comp, /* BTA_AV_DEREG_COMP_EVT */
#if (AVDT_REPORTING == TRUE)
bta_av_rpc_conn, /* BTA_AV_AVDT_RPT_CONN_EVT */
#endif
bta_av_api_to_ssm, /* BTA_AV_API_START_EVT */
bta_av_api_to_ssm, /* BTA_AV_API_STOP_EVT */
};
/*****************************************************************************
* Global data
****************************************************************************/
/* AV control block */
tBTA_AV_CB bta_av_cb;
static const char* bta_av_st_code(uint8_t state);
/*******************************************************************************
*
* Function bta_av_api_enable
*
* Description Handle an API enable event.
*
*
* Returns void
*
******************************************************************************/
static void bta_av_api_enable(tBTA_AV_DATA* p_data) {
/* initialize control block */
memset(&bta_av_cb, 0, sizeof(tBTA_AV_CB));
for (int i = 0; i < BTA_AV_NUM_RCB; i++)
bta_av_cb.rcb[i].handle = BTA_AV_RC_HANDLE_NONE;
bta_av_cb.rc_acp_handle = BTA_AV_RC_HANDLE_NONE;
/*
* TODO: The "disable" event handling is missing - there we need
* to alarm_free() the alarms below.
*/
bta_av_cb.link_signalling_timer = alarm_new("bta_av.link_signalling_timer");
bta_av_cb.accept_signalling_timer =
alarm_new("bta_av.accept_signalling_timer");
/* store parameters */
bta_av_cb.p_cback = p_data->api_enable.p_cback;
bta_av_cb.features = p_data->api_enable.features;
bta_av_cb.sec_mask = p_data->api_enable.sec_mask;
tBTA_AV_ENABLE enable;
enable.features = bta_av_cb.features;
/* Register for SCO change event */
if (!(bta_av_cb.features & BTA_AV_FEAT_NO_SCO_SSPD)) {
bta_sys_sco_register(bta_av_sco_chg_cback);
}
/* call callback with enable event */
(*bta_av_cb.p_cback)(BTA_AV_ENABLE_EVT, (tBTA_AV*)&enable);
}
/*******************************************************************************
*
* Function bta_av_addr_to_scb
*
* Description find the stream control block by the peer addr
*
* Returns void
*
******************************************************************************/
static tBTA_AV_SCB* bta_av_addr_to_scb(BD_ADDR bd_addr) {
tBTA_AV_SCB* p_scb = NULL;
int xx;
for (xx = 0; xx < BTA_AV_NUM_STRS; xx++) {
if (bta_av_cb.p_scb[xx]) {
if (!bdcmp(bd_addr, bta_av_cb.p_scb[xx]->peer_addr)) {
p_scb = bta_av_cb.p_scb[xx];
break;
}
}
}
return p_scb;
}
/*******************************************************************************
*
* Function bta_av_hndl_to_scb
*
* Description find the stream control block by the handle
*
* Returns void
*
******************************************************************************/
tBTA_AV_SCB* bta_av_hndl_to_scb(uint16_t handle) {
tBTA_AV_HNDL hndl = (tBTA_AV_HNDL)handle;
tBTA_AV_SCB* p_scb = NULL;
uint8_t idx = (hndl & BTA_AV_HNDL_MSK);
if (idx && (idx <= BTA_AV_NUM_STRS)) {
p_scb = bta_av_cb.p_scb[idx - 1];
}
return p_scb;
}
/*******************************************************************************
*
* Function bta_av_alloc_scb
*
* Description allocate stream control block,
* register the service to stack
* create SDP record
*
* Returns void
*
******************************************************************************/
static tBTA_AV_SCB* bta_av_alloc_scb(tBTA_AV_CHNL chnl) {
tBTA_AV_SCB* p_ret = NULL;
int xx;
tBTA_AV_STATUS sts = BTA_AV_SUCCESS;
if (chnl == BTA_AV_CHNL_VIDEO) {
if (p_bta_av_cfg->p_act_tbl == NULL || p_bta_av_cfg->p_reg == NULL) {
APPL_TRACE_ERROR("Video streaming not supported");
sts = BTA_AV_FAIL;
} else {
/* allow only one Video channel */
if (bta_av_cb.reg_video) {
APPL_TRACE_ERROR("Already registered");
sts = BTA_AV_FAIL;
}
}
} else if (chnl != BTA_AV_CHNL_AUDIO) {
APPL_TRACE_ERROR("bad channel: %d", chnl);
sts = BTA_AV_FAIL;
}
if (sts == BTA_AV_SUCCESS) {
for (xx = 0; xx < BTA_AV_NUM_STRS; xx++) {
if (bta_av_cb.p_scb[xx] == NULL) {
/* found an empty spot */
p_ret = (tBTA_AV_SCB*)osi_calloc(sizeof(tBTA_AV_SCB));
p_ret->rc_handle = BTA_AV_RC_HANDLE_NONE;
p_ret->chnl = chnl;
p_ret->hndl = (tBTA_AV_HNDL)((xx + 1) | chnl);
p_ret->hdi = xx;
p_ret->a2dp_list = list_new(NULL);
p_ret->avrc_ct_timer = alarm_new("bta_av.avrc_ct_timer");
bta_av_cb.p_scb[xx] = p_ret;
break;
}
}
}
return p_ret;
}
/*******************************************************************************
******************************************************************************/
void bta_av_conn_cback(UNUSED_ATTR uint8_t handle, BD_ADDR bd_addr,
uint8_t event, tAVDT_CTRL* p_data) {
uint16_t evt = 0;
tBTA_AV_SCB* p_scb = NULL;
#if (BTA_AR_INCLUDED == TRUE)
if (event == BTA_AR_AVDT_CONN_EVT || event == AVDT_CONNECT_IND_EVT ||
event == AVDT_DISCONNECT_IND_EVT)
#else
if (event == AVDT_CONNECT_IND_EVT || event == AVDT_DISCONNECT_IND_EVT)
#endif
{
evt = BTA_AV_SIG_CHG_EVT;
if (event == AVDT_DISCONNECT_IND_EVT) {
p_scb = bta_av_addr_to_scb(bd_addr);
} else if (event == AVDT_CONNECT_IND_EVT) {
APPL_TRACE_DEBUG("%s: CONN_IND is ACP:%d", __func__,
p_data->hdr.err_param);
}
tBTA_AV_STR_MSG* p_msg =
(tBTA_AV_STR_MSG*)osi_malloc(sizeof(tBTA_AV_STR_MSG));
p_msg->hdr.event = evt;
p_msg->hdr.layer_specific = event;
p_msg->hdr.offset = p_data->hdr.err_param;
bdcpy(p_msg->bd_addr, bd_addr);
if (p_scb) {
APPL_TRACE_DEBUG("scb hndl x%x, role x%x", p_scb->hndl, p_scb->role);
}
APPL_TRACE_DEBUG("conn_cback bd_addr:%02x-%02x-%02x-%02x-%02x-%02x",
bd_addr[0], bd_addr[1], bd_addr[2], bd_addr[3], bd_addr[4],
bd_addr[5]);
bta_sys_sendmsg(p_msg);
}
}
#if (AVDT_REPORTING == TRUE)
/*******************************************************************************
*
* Function bta_av_a2dp_report_cback
*
* Description A2DP report callback.
*
* Returns void
*
******************************************************************************/
static void bta_av_a2dp_report_cback(UNUSED_ATTR uint8_t handle,
UNUSED_ATTR AVDT_REPORT_TYPE type,
UNUSED_ATTR tAVDT_REPORT_DATA* p_data) {
/* Do not need to handle report data for now.
* This empty function is here for conformance reasons. */
}
#endif
/*******************************************************************************
*
* Function bta_av_api_register
*
* Description allocate stream control block,
* register the service to stack
* create SDP record
*
* Returns void
*
******************************************************************************/
static void bta_av_api_register(tBTA_AV_DATA* p_data) {
tBTA_AV_REGISTER registr;
tBTA_AV_SCB* p_scb; /* stream control block */
tAVDT_REG reg;
tAVDT_CS cs;
char* p_service_name;
tBTA_UTL_COD cod;
memset(&cs, 0, sizeof(tAVDT_CS));
registr.status = BTA_AV_FAIL_RESOURCES;
registr.app_id = p_data->api_reg.app_id;
registr.chnl = (tBTA_AV_CHNL)p_data->hdr.layer_specific;
uint16_t profile_initialized = p_data->api_reg.service_uuid;
if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
p_bta_av_cfg = (tBTA_AV_CFG*)&bta_avk_cfg;
} else if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
p_bta_av_cfg = (tBTA_AV_CFG*)&bta_av_cfg;
}
APPL_TRACE_DEBUG("%s: profile: 0x%x", __func__, profile_initialized);
if (p_bta_av_cfg == NULL) {
APPL_TRACE_ERROR("AV configuration is null!");
return;
}
do {
p_scb = bta_av_alloc_scb(registr.chnl);
if (p_scb == NULL) {
APPL_TRACE_ERROR("failed to alloc SCB");
break;
}
registr.hndl = p_scb->hndl;
p_scb->app_id = registr.app_id;
/* initialize the stream control block */
registr.status = BTA_AV_SUCCESS;
if ((bta_av_cb.reg_audio + bta_av_cb.reg_video) == 0) {
/* the first channel registered. register to AVDTP */
reg.ctrl_mtu = p_bta_av_cfg->sig_mtu;
reg.ret_tout = BTA_AV_RET_TOUT;
reg.sig_tout = BTA_AV_SIG_TOUT;
reg.idle_tout = BTA_AV_IDLE_TOUT;
reg.sec_mask = bta_av_cb.sec_mask;
#if (BTA_AR_INCLUDED == TRUE)
bta_ar_reg_avdt(®, bta_av_conn_cback, BTA_ID_AV);
#endif
bta_sys_role_chg_register(&bta_av_sys_rs_cback);
/* create remote control TG service if required */
if (bta_av_cb.features & (BTA_AV_FEAT_RCTG)) {
/* register with no authorization; let AVDTP use authorization instead */
#if (BTA_AR_INCLUDED == TRUE)
#if (BTA_AV_WITH_AVCTP_AUTHORIZATION == TRUE)
bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
bta_av_cb.sec_mask, BTA_ID_AV);
#else
bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
(uint8_t)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)),
BTA_ID_AV);
#endif
/* For the Audio Sink role we support additional TG 1.3 to support
* absolute volume.
*/
uint16_t profile_version = AVRC_REV_1_0;
if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
// This check can override the AVRCP profile version with a property
char avrcp_version[PROPERTY_VALUE_MAX] = {0};
osi_property_get(AVRCP_VERSION_PROPERTY, avrcp_version,
AVRCP_1_4_STRING);
LOG_INFO(LOG_TAG, "AVRCP version used for sdp: \"%s\"",
avrcp_version);
if (!strncmp(AVRCP_1_6_STRING, avrcp_version,
sizeof(AVRCP_1_6_STRING))) {
profile_version = AVRC_REV_1_6;
} else if (!strncmp(AVRCP_1_5_STRING, avrcp_version,
sizeof(AVRCP_1_5_STRING))) {
profile_version = AVRC_REV_1_5;
} else {
profile_version = AVRC_REV_1_4;
}
} else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
// Initialize AVRCP1.4 to provide Absolute Volume control.
profile_version = AVRC_REV_1_4;
}
bta_ar_reg_avrc(
UUID_SERVCLASS_AV_REM_CTRL_TARGET, "AV Remote Control Target", NULL,
p_bta_av_cfg->avrc_tg_cat, BTA_ID_AV,
(bta_av_cb.features & BTA_AV_FEAT_BROWSE), profile_version);
#endif
}
/* Set the Capturing service class bit */
if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE)
cod.service = BTM_COD_SERVICE_CAPTURING;
else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK)
cod.service = BTM_COD_SERVICE_RENDERING;
utl_set_device_class(&cod, BTA_UTL_SET_COD_SERVICE_CLASS);
} /* if 1st channel */
/* get stream configuration and create stream */
cs.cfg.num_codec = 1;
cs.nsc_mask =
AVDT_NSC_RECONFIG |
((bta_av_cb.features & BTA_AV_FEAT_PROTECT) ? 0 : AVDT_NSC_SECURITY);
APPL_TRACE_DEBUG("nsc_mask: 0x%x", cs.nsc_mask);
if (p_data->api_reg.p_service_name[0] == 0) {
p_service_name = NULL;
} else {
p_service_name = p_data->api_reg.p_service_name;
}
p_scb->suspend_sup = true;
p_scb->recfg_sup = true;
p_scb->skip_sdp = false;
cs.p_ctrl_cback = bta_av_dt_cback[p_scb->hdi];
if (registr.chnl == BTA_AV_CHNL_AUDIO) {
/* set up the audio stream control block */
p_scb->p_act_tbl = (const tBTA_AV_ACT*)bta_av_a2dp_action;
p_scb->p_cos = &bta_av_a2dp_cos;
p_scb->media_type = AVDT_MEDIA_TYPE_AUDIO;
cs.cfg.psc_mask = AVDT_PSC_TRANS;
cs.media_type = AVDT_MEDIA_TYPE_AUDIO;
cs.mtu = p_bta_av_cfg->audio_mtu;
cs.flush_to = L2CAP_DEFAULT_FLUSH_TO;
btav_a2dp_codec_index_t codec_index_min =
BTAV_A2DP_CODEC_INDEX_SOURCE_MIN;
btav_a2dp_codec_index_t codec_index_max =
BTAV_A2DP_CODEC_INDEX_SOURCE_MAX;
#if (AVDT_REPORTING == TRUE)
if (bta_av_cb.features & BTA_AV_FEAT_REPORT) {
cs.cfg.psc_mask |= AVDT_PSC_REPORT;
cs.p_report_cback = bta_av_a2dp_report_cback;
}
#endif
if (bta_av_cb.features & BTA_AV_FEAT_DELAY_RPT)
cs.cfg.psc_mask |= AVDT_PSC_DELAY_RPT;
if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
cs.tsep = AVDT_TSEP_SRC;
codec_index_min = BTAV_A2DP_CODEC_INDEX_SOURCE_MIN;
codec_index_max = BTAV_A2DP_CODEC_INDEX_SOURCE_MAX;
} else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
cs.tsep = AVDT_TSEP_SNK;
cs.p_sink_data_cback = bta_av_sink_data_cback;
codec_index_min = BTAV_A2DP_CODEC_INDEX_SINK_MIN;
codec_index_max = BTAV_A2DP_CODEC_INDEX_SINK_MAX;
}
/* Initialize handles to zero */
for (int xx = 0; xx < BTAV_A2DP_CODEC_INDEX_MAX; xx++) {
p_scb->seps[xx].av_handle = 0;
}
/* keep the configuration in the stream control block */
memcpy(&p_scb->cfg, &cs.cfg, sizeof(tAVDT_CFG));
for (int i = codec_index_min; i < codec_index_max; i++) {
btav_a2dp_codec_index_t codec_index =
static_cast<btav_a2dp_codec_index_t>(i);
if (!(*bta_av_a2dp_cos.init)(codec_index, &cs.cfg)) {
continue;
}
if (AVDT_CreateStream(&p_scb->seps[codec_index].av_handle, &cs) !=
AVDT_SUCCESS) {
continue;
}
/* Save a copy of the codec */
memcpy(p_scb->seps[codec_index].codec_info, cs.cfg.codec_info,
AVDT_CODEC_SIZE);
p_scb->seps[codec_index].tsep = cs.tsep;
if (cs.tsep == AVDT_TSEP_SNK) {
p_scb->seps[codec_index].p_app_sink_data_cback =
p_data->api_reg.p_app_sink_data_cback;
} else {
/* In case of A2DP SOURCE we don't need a callback to
* handle media packets.
*/
p_scb->seps[codec_index].p_app_sink_data_cback = NULL;
}
}
if (!bta_av_cb.reg_audio) {
bta_av_cb.sdp_a2dp_handle = 0;
bta_av_cb.sdp_a2dp_snk_handle = 0;
if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
/* create the SDP records on the 1st audio channel */
bta_av_cb.sdp_a2dp_handle = SDP_CreateRecord();
A2DP_AddRecord(UUID_SERVCLASS_AUDIO_SOURCE, p_service_name, NULL,
A2DP_SUPF_PLAYER, bta_av_cb.sdp_a2dp_handle);
bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SOURCE);
} else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
#if (BTA_AV_SINK_INCLUDED == TRUE)
bta_av_cb.sdp_a2dp_snk_handle = SDP_CreateRecord();
A2DP_AddRecord(UUID_SERVCLASS_AUDIO_SINK, p_service_name, NULL,
A2DP_SUPF_PLAYER, bta_av_cb.sdp_a2dp_snk_handle);
bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SINK);
#endif
}
/* start listening when A2DP is registered */
if (bta_av_cb.features & BTA_AV_FEAT_RCTG)
bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1);
/* if the AV and AVK are both supported, it cannot support the CT role
*/
if (bta_av_cb.features & (BTA_AV_FEAT_RCCT)) {
/* if TG is not supported, we need to register to AVCT now */
if ((bta_av_cb.features & (BTA_AV_FEAT_RCTG)) == 0) {
#if (BTA_AR_INCLUDED == TRUE)
#if (BTA_AV_WITH_AVCTP_AUTHORIZATION == TRUE)
bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
bta_av_cb.sec_mask, BTA_ID_AV);
#else
bta_ar_reg_avct(
p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
(uint8_t)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)),
BTA_ID_AV);
#endif
#endif
bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1);
}
#if (BTA_AR_INCLUDED == TRUE)
/* create an SDP record as AVRC CT. We create 1.3 for SOURCE
* because we rely on feature bits being scanned by external
* devices more than the profile version itself.
*
* We create 1.4 for SINK since we support browsing.
*/
if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
bta_ar_reg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, NULL, NULL,
p_bta_av_cfg->avrc_ct_cat, BTA_ID_AV,
(bta_av_cb.features & BTA_AV_FEAT_BROWSE),
AVRC_REV_1_3);
} else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
bta_ar_reg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, NULL, NULL,
p_bta_av_cfg->avrc_ct_cat, BTA_ID_AV,
(bta_av_cb.features & BTA_AV_FEAT_BROWSE),
AVRC_REV_1_6);
}
#endif
}
}
bta_av_cb.reg_audio |= BTA_AV_HNDL_TO_MSK(p_scb->hdi);
APPL_TRACE_DEBUG("reg_audio: 0x%x", bta_av_cb.reg_audio);
} else {
bta_av_cb.reg_video = BTA_AV_HNDL_TO_MSK(p_scb->hdi);
bta_av_cb.sdp_vdp_handle = SDP_CreateRecord();
/* register the video channel */
/* no need to verify the function pointer here. it's verified prior */
(*p_bta_av_cfg->p_reg)(&cs, p_service_name, p_scb);
}
} while (0);
/* call callback with register event */
(*bta_av_cb.p_cback)(BTA_AV_REGISTER_EVT, (tBTA_AV*)®istr);
}
/*******************************************************************************
*
* Function bta_av_api_deregister
*
* Description de-register a channel
*
*
* Returns void
*
******************************************************************************/
void bta_av_api_deregister(tBTA_AV_DATA* p_data) {
tBTA_AV_SCB* p_scb = bta_av_hndl_to_scb(p_data->hdr.layer_specific);
if (p_scb) {
p_scb->deregistring = true;
bta_av_ssm_execute(p_scb, BTA_AV_API_CLOSE_EVT, p_data);
} else {
bta_av_dereg_comp(p_data);
}
}
/*******************************************************************************
*
* Function bta_av_ci_data
*
* Description Forward the BTA_AV_CI_SRC_DATA_READY_EVT to stream state
* machine.
*
*
* Returns void
*
******************************************************************************/
static void bta_av_ci_data(tBTA_AV_DATA* p_data) {
tBTA_AV_SCB* p_scb;
int i;
uint8_t chnl = (uint8_t)p_data->hdr.layer_specific;
for (i = 0; i < BTA_AV_NUM_STRS; i++) {
p_scb = bta_av_cb.p_scb[i];
if (p_scb && p_scb->chnl == chnl) {
bta_av_ssm_execute(p_scb, BTA_AV_SRC_DATA_READY_EVT, p_data);
}
}
}
/*******************************************************************************
*
* Function bta_av_rpc_conn
*
* Description report report channel open
*
* Returns void
*
******************************************************************************/
#if (AVDT_REPORTING == TRUE)
static void bta_av_rpc_conn(UNUSED_ATTR tBTA_AV_DATA* p_data) {}
#endif
/*******************************************************************************
*
* Function bta_av_api_to_ssm
*
* Description forward the API request to stream state machine
*
*
* Returns void
*
******************************************************************************/
static void bta_av_api_to_ssm(tBTA_AV_DATA* p_data) {
int xx;
uint16_t event =
p_data->hdr.event - BTA_AV_FIRST_A2S_API_EVT + BTA_AV_FIRST_A2S_SSM_EVT;
for (xx = 0; xx < BTA_AV_NUM_STRS; xx++) {
bta_av_ssm_execute(bta_av_cb.p_scb[xx], event, p_data);
}
}
/*******************************************************************************
*
* Function bta_av_chk_start
*
* Description if this is audio channel, check if more than one audio
* channel is connected & already started.
*
* Returns true, if need api_start
*
******************************************************************************/
bool bta_av_chk_start(tBTA_AV_SCB* p_scb) {
bool start = false;
tBTA_AV_SCB* p_scbi;
int i;
if (p_scb->chnl == BTA_AV_CHNL_AUDIO) {
if ((bta_av_cb.audio_open_cnt >= 2) &&
((0 ==
(p_scb->role & BTA_AV_ROLE_AD_ACP)) || /* Outgoing connection or */
(bta_av_cb.features &
BTA_AV_FEAT_ACP_START))) /* auto-starting option */
{
/* more than one audio channel is connected */
/* if this is the 2nd stream as ACP, give INT a chance to issue the START
* command */
for (i = 0; i < BTA_AV_NUM_STRS; i++) {
p_scbi = bta_av_cb.p_scb[i];
if (p_scbi && p_scbi->chnl == BTA_AV_CHNL_AUDIO && p_scbi->co_started) {
start = true;
/* may need to update the flush timeout of this already started stream
*/
if (p_scbi->co_started != bta_av_cb.audio_open_cnt) {
p_scbi->co_started = bta_av_cb.audio_open_cnt;
L2CA_SetFlushTimeout(
p_scbi->peer_addr,
p_bta_av_cfg->p_audio_flush_to[p_scbi->co_started - 1]);
}
}
}
}
}
return start;
}
/*******************************************************************************
*
* Function bta_av_restore_switch
*
* Description assume that the caller of this function already makes
* sure that there's only one ACL connection left
*
* Returns void
*
******************************************************************************/
void bta_av_restore_switch(void) {
tBTA_AV_CB* p_cb = &bta_av_cb;
int i;
uint8_t mask;
APPL_TRACE_DEBUG("reg_audio: 0x%x", bta_av_cb.reg_audio);
for (i = 0; i < BTA_AV_NUM_STRS; i++) {
mask = BTA_AV_HNDL_TO_MSK(i);
if (p_cb->conn_audio == mask) {
if (p_cb->p_scb[i]) {
bta_sys_set_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH,
p_cb->p_scb[i]->peer_addr);
}
break;
}
}
}
/*******************************************************************************
*
* Function bta_av_sys_rs_cback
*
* Description Receives the role change event from dm
*
* Returns (BTA_SYS_ROLE_CHANGE, new_role, hci_status, p_bda)
*
******************************************************************************/
static void bta_av_sys_rs_cback(UNUSED_ATTR tBTA_SYS_CONN_STATUS status,
uint8_t id, uint8_t app_id, BD_ADDR peer_addr) {
int i;
tBTA_AV_SCB* p_scb = NULL;
uint8_t cur_role;
uint8_t peer_idx = 0;
APPL_TRACE_DEBUG("bta_av_sys_rs_cback: %d", bta_av_cb.rs_idx);
for (i = 0; i < BTA_AV_NUM_STRS; i++) {
/* loop through all the SCBs to find matching peer addresses and report the
* role change event */
/* note that more than one SCB (a2dp & vdp) maybe waiting for this event */
p_scb = bta_av_cb.p_scb[i];
if (p_scb && (bdcmp(peer_addr, p_scb->peer_addr) == 0)) {
tBTA_AV_ROLE_RES* p_buf =
(tBTA_AV_ROLE_RES*)osi_malloc(sizeof(tBTA_AV_ROLE_RES));
APPL_TRACE_DEBUG("new_role:%d, hci_status:x%x hndl: x%x", id, app_id,
p_scb->hndl);
/*
if ((id != BTM_ROLE_MASTER) && (app_id != HCI_SUCCESS))
{
bta_sys_set_policy(BTA_ID_AV,
(HCI_ENABLE_MASTER_SLAVE_SWITCH|HCI_ENABLE_SNIFF_MODE), p_scb->peer_addr);
}
*/
p_buf->hdr.event = BTA_AV_ROLE_CHANGE_EVT;
p_buf->hdr.layer_specific = p_scb->hndl;
p_buf->new_role = id;
p_buf->hci_status = app_id;
bta_sys_sendmsg(p_buf);
peer_idx = p_scb->hdi + 1; /* Handle index for the peer_addr */
}
}
/* restore role switch policy, if role switch failed */
if ((HCI_SUCCESS != app_id) &&
(BTM_GetRole(peer_addr, &cur_role) == BTM_SUCCESS) &&
(cur_role == BTM_ROLE_SLAVE)) {
bta_sys_set_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH, peer_addr);
}
/* if BTA_AvOpen() was called for other device, which caused the role switch
* of the peer_addr, */
/* we need to continue opening process for the BTA_AvOpen(). */
if ((bta_av_cb.rs_idx != 0) && (bta_av_cb.rs_idx != peer_idx)) {
if ((bta_av_cb.rs_idx - 1) < BTA_AV_NUM_STRS) {
p_scb = bta_av_cb.p_scb[bta_av_cb.rs_idx - 1];
}
if (p_scb && p_scb->q_tag == BTA_AV_Q_TAG_OPEN) {
APPL_TRACE_DEBUG("bta_av_sys_rs_cback: rs_idx(%d), hndl:x%x q_tag: %d",
bta_av_cb.rs_idx, p_scb->hndl, p_scb->q_tag);
if (HCI_SUCCESS == app_id || HCI_ERR_NO_CONNECTION == app_id)
p_scb->q_info.open.switch_res = BTA_AV_RS_OK;
else
p_scb->q_info.open.switch_res = BTA_AV_RS_FAIL;
/* Continue av open process */
bta_av_do_disc_a2dp(p_scb, (tBTA_AV_DATA*)&(p_scb->q_info.open));
}
bta_av_cb.rs_idx = 0;
}
}
/*******************************************************************************
*
* Function bta_av_sco_chg_cback
*
* Description receive & process the SCO connection up/down event from sys.
* call setup also triggers this callback, to suspend av before
* SCO activity happens, or to resume av once call ends.
*
* Returns void
*
******************************************************************************/
static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, uint8_t id,
UNUSED_ATTR uint8_t app_id,
UNUSED_ATTR BD_ADDR peer_addr) {
tBTA_AV_SCB* p_scb;
int i;
tBTA_AV_API_STOP stop;
APPL_TRACE_DEBUG("bta_av_sco_chg_cback:%d status:%d", id, status);
if (id) {
bta_av_cb.sco_occupied = true;
/* either BTA_SYS_SCO_OPEN or BTA_SYS_SCO_CLOSE with remaining active SCO */
for (i = 0; i < BTA_AV_NUM_STRS; i++) {
p_scb = bta_av_cb.p_scb[i];
if (p_scb && p_scb->co_started && (p_scb->sco_suspend == false)) {
APPL_TRACE_DEBUG("suspending scb:%d", i);
/* scb is used and started, not suspended automatically */
p_scb->sco_suspend = true;
stop.flush = false;
stop.suspend = true;
stop.reconfig_stop = false;
bta_av_ssm_execute(p_scb, BTA_AV_AP_STOP_EVT, (tBTA_AV_DATA*)&stop);
}
}
} else {
bta_av_cb.sco_occupied = false;
for (i = 0; i < BTA_AV_NUM_STRS; i++) {
p_scb = bta_av_cb.p_scb[i];
if (p_scb && p_scb->sco_suspend) /* scb is used and suspended for SCO */
{
APPL_TRACE_DEBUG("starting scb:%d", i);
bta_av_ssm_execute(p_scb, BTA_AV_AP_START_EVT, NULL);
}
}
}
}
/*******************************************************************************
*
* Function bta_av_switch_if_needed
*
* Description This function checks if there is another existing AV
* channel that is local as slave role.
* If so, role switch and remove it from link policy.
*
* Returns true, if role switch is done
*
******************************************************************************/
bool bta_av_switch_if_needed(tBTA_AV_SCB* p_scb) {
uint8_t role;
bool needed = false;
tBTA_AV_SCB* p_scbi;
int i;
uint8_t mask;
for (i = 0; i < BTA_AV_NUM_STRS; i++) {
mask = BTA_AV_HNDL_TO_MSK(i);
p_scbi = bta_av_cb.p_scb[i];
if (p_scbi && (p_scb->hdi != i) && /* not the original channel */
((bta_av_cb.conn_audio & mask) || /* connected audio */
(bta_av_cb.conn_video & mask))) /* connected video */
{
BTM_GetRole(p_scbi->peer_addr, &role);
/* this channel is open - clear the role switch link policy for this link
*/
if (BTM_ROLE_MASTER != role) {
if (bta_av_cb.features & BTA_AV_FEAT_MASTER)
bta_sys_clear_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH,
p_scbi->peer_addr);
if (BTM_CMD_STARTED !=
BTM_SwitchRole(p_scbi->peer_addr, BTM_ROLE_MASTER, NULL)) {
/* can not switch role on SCBI
* start the timer on SCB - because this function is ONLY called when
* SCB gets API_OPEN */
bta_sys_start_timer(p_scb->avrc_ct_timer, BTA_AV_RS_TIME_VAL,
BTA_AV_AVRC_TIMER_EVT, p_scb->hndl);
}
needed = true;
/* mark the original channel as waiting for RS result */
bta_av_cb.rs_idx = p_scb->hdi + 1;
break;
}
}
}
return needed;
}
/*******************************************************************************
*
* Function bta_av_link_role_ok
*
* Description This function checks if the SCB has existing ACL connection
* If so, check if the link role fits the requirements.
*
* Returns true, if role is ok
*
******************************************************************************/
bool bta_av_link_role_ok(tBTA_AV_SCB* p_scb, uint8_t bits) {
uint8_t role;
bool is_ok = true;
if (BTM_GetRole(p_scb->peer_addr, &role) == BTM_SUCCESS) {
LOG_INFO(LOG_TAG, "%s hndl:x%x role:%d conn_audio:x%x bits:%d features:x%x",
__func__, p_scb->hndl, role, bta_av_cb.conn_audio, bits,
bta_av_cb.features);
if (BTM_ROLE_MASTER != role &&
(A2DP_BitsSet(bta_av_cb.conn_audio) > bits ||
(bta_av_cb.features & BTA_AV_FEAT_MASTER))) {
if (bta_av_cb.features & BTA_AV_FEAT_MASTER)
bta_sys_clear_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH,
p_scb->peer_addr);
if (BTM_CMD_STARTED !=
BTM_SwitchRole(p_scb->peer_addr, BTM_ROLE_MASTER, NULL)) {
/* can not switch role on SCB - start the timer on SCB */
}
is_ok = false;
p_scb->wait |= BTA_AV_WAIT_ROLE_SW_RES_START;
}
}
return is_ok;
}
/*******************************************************************************
*
* Function bta_av_chk_mtu
*
* Description if this is audio channel, check if more than one audio
* channel is connected.
*
* Returns The smallest mtu of the connected audio channels
*
******************************************************************************/
uint16_t bta_av_chk_mtu(tBTA_AV_SCB* p_scb, UNUSED_ATTR uint16_t mtu) {
uint16_t ret_mtu = BTA_AV_MAX_A2DP_MTU;
tBTA_AV_SCB* p_scbi;
int i;
uint8_t mask;
/* TODO_MV mess with the mtu according to the number of EDR/non-EDR headsets
*/
if (p_scb->chnl == BTA_AV_CHNL_AUDIO) {
if (bta_av_cb.audio_open_cnt >= 2) {
/* more than one audio channel is connected */
for (i = 0; i < BTA_AV_NUM_STRS; i++) {
p_scbi = bta_av_cb.p_scb[i];
if ((p_scb != p_scbi) && p_scbi &&
(p_scbi->chnl == BTA_AV_CHNL_AUDIO)) {
mask = BTA_AV_HNDL_TO_MSK(i);
APPL_TRACE_DEBUG("[%d] mtu: %d, mask:0x%x", i, p_scbi->stream_mtu,
mask);
if (bta_av_cb.conn_audio & mask) {
if (ret_mtu > p_scbi->stream_mtu) ret_mtu = p_scbi->stream_mtu;
}
}
}
}
APPL_TRACE_DEBUG("bta_av_chk_mtu audio count:%d, conn_audio:0x%x, ret:%d",
bta_av_cb.audio_open_cnt, bta_av_cb.conn_audio, ret_mtu);
}
return ret_mtu;
}
/*******************************************************************************
*
* Function bta_av_dup_audio_buf
*
* Description dup the audio data to the q_info.a2dp of other audio
* channels
*
* Returns void
*
******************************************************************************/
void bta_av_dup_audio_buf(tBTA_AV_SCB* p_scb, BT_HDR* p_buf) {
/* Test whether there is more than one audio channel connected */
if ((p_buf == NULL) || (bta_av_cb.audio_open_cnt < 2)) return;
uint16_t copy_size = BT_HDR_SIZE + p_buf->len + p_buf->offset;
for (int i = 0; i < BTA_AV_NUM_STRS; i++) {
tBTA_AV_SCB* p_scbi = bta_av_cb.p_scb[i];
if (i == p_scb->hdi) continue; /* Ignore the original channel */
if ((p_scbi == NULL) || !p_scbi->co_started)
continue; /* Ignore if SCB is not used or started */
if (!(bta_av_cb.conn_audio & BTA_AV_HNDL_TO_MSK(i)))
continue; /* Audio is not connected */
/* Enqueue the data */
BT_HDR* p_new = (BT_HDR*)osi_malloc(copy_size);
memcpy(p_new, p_buf, copy_size);
list_append(p_scbi->a2dp_list, p_new);
if (list_length(p_scbi->a2dp_list) > p_bta_av_cfg->audio_mqs) {
// Drop the oldest packet
bta_av_co_audio_drop(p_scbi->hndl);
BT_HDR* p_buf_drop = static_cast<BT_HDR*>(list_front(p_scbi->a2dp_list));
list_remove(p_scbi->a2dp_list, p_buf_drop);
osi_free(p_buf_drop);
}
}
}
/*******************************************************************************
*
* Function bta_av_sm_execute
*
* Description State machine event handling function for AV
*
*
* Returns void
*
******************************************************************************/
void bta_av_sm_execute(tBTA_AV_CB* p_cb, uint16_t event, tBTA_AV_DATA* p_data) {
tBTA_AV_ST_TBL state_table;
uint8_t action;
APPL_TRACE_EVENT("%s: AV event=0x%x(%s) state=%d(%s)", __func__, event,
bta_av_evt_code(event), p_cb->state,
bta_av_st_code(p_cb->state));
/* look up the state table for the current state */
state_table = bta_av_st_tbl[p_cb->state];
event &= 0x00FF;
/* set next state */
p_cb->state = state_table[event][BTA_AV_NEXT_STATE];
APPL_TRACE_EVENT("next state=%d event offset:%d", p_cb->state, event);
/* execute action functions */
action = state_table[event][BTA_AV_ACTION_COL];
if (action != BTA_AV_IGNORE) {
APPL_TRACE_EVENT("%s action executed %d", __func__, action);
(*bta_av_action[action])(p_cb, p_data);
}
}
/*******************************************************************************
*
* Function bta_av_hdl_event
*
* Description Advanced audio/video main event handling function.
*
*
* Returns bool
*
******************************************************************************/
bool bta_av_hdl_event(BT_HDR* p_msg) {
if (p_msg->event > BTA_AV_LAST_EVT) {
return true; /* to free p_msg */
}
if (p_msg->event >= BTA_AV_FIRST_NSM_EVT) {
APPL_TRACE_VERBOSE("%s: AV nsm event=0x%x(%s)", __func__, p_msg->event,
bta_av_evt_code(p_msg->event));
/* non state machine events */
(*bta_av_nsm_act[p_msg->event - BTA_AV_FIRST_NSM_EVT])(
(tBTA_AV_DATA*)p_msg);
} else if (p_msg->event >= BTA_AV_FIRST_SM_EVT &&
p_msg->event <= BTA_AV_LAST_SM_EVT) {
APPL_TRACE_VERBOSE("%s: AV sm event=0x%x(%s)", __func__, p_msg->event,
bta_av_evt_code(p_msg->event));
/* state machine events */
bta_av_sm_execute(&bta_av_cb, p_msg->event, (tBTA_AV_DATA*)p_msg);
} else {
APPL_TRACE_VERBOSE("handle=0x%x", p_msg->layer_specific);
/* stream state machine events */
bta_av_ssm_execute(bta_av_hndl_to_scb(p_msg->layer_specific), p_msg->event,
(tBTA_AV_DATA*)p_msg);
}
return true;
}
/*****************************************************************************
* Debug Functions
****************************************************************************/
/*******************************************************************************
*
* Function bta_av_st_code
*
* Description
*
* Returns char *
*
******************************************************************************/
static const char* bta_av_st_code(uint8_t state) {
switch (state) {
case BTA_AV_INIT_ST:
return "INIT";
case BTA_AV_OPEN_ST:
return "OPEN";
default:
return "unknown";
}
}
/*******************************************************************************
*
* Function bta_av_evt_code
*
* Description
*
* Returns char *
*
******************************************************************************/
const char* bta_av_evt_code(uint16_t evt_code) {
switch (evt_code) {
case BTA_AV_API_DISABLE_EVT:
return "API_DISABLE";
case BTA_AV_API_REMOTE_CMD_EVT:
return "API_REMOTE_CMD";
case BTA_AV_API_VENDOR_CMD_EVT:
return "API_VENDOR_CMD";
case BTA_AV_API_VENDOR_RSP_EVT:
return "API_VENDOR_RSP";
case BTA_AV_API_META_RSP_EVT:
return "API_META_RSP_EVT";
case BTA_AV_API_RC_CLOSE_EVT:
return "API_RC_CLOSE";
case BTA_AV_AVRC_OPEN_EVT:
return "AVRC_OPEN";
case BTA_AV_AVRC_MSG_EVT:
return "AVRC_MSG";
case BTA_AV_AVRC_NONE_EVT:
return "AVRC_NONE";
case BTA_AV_API_OPEN_EVT:
return "API_OPEN";
case BTA_AV_API_CLOSE_EVT:
return "API_CLOSE";
case BTA_AV_AP_START_EVT:
return "AP_START";
case BTA_AV_AP_STOP_EVT:
return "AP_STOP";
case BTA_AV_API_RECONFIG_EVT:
return "API_RECONFIG";
case BTA_AV_API_PROTECT_REQ_EVT:
return "API_PROTECT_REQ";
case BTA_AV_API_PROTECT_RSP_EVT:
return "API_PROTECT_RSP";
case BTA_AV_API_RC_OPEN_EVT:
return "API_RC_OPEN";
case BTA_AV_SRC_DATA_READY_EVT:
return "SRC_DATA_READY";
case BTA_AV_CI_SETCONFIG_OK_EVT:
return "CI_SETCONFIG_OK";
case BTA_AV_CI_SETCONFIG_FAIL_EVT:
return "CI_SETCONFIG_FAIL";
case BTA_AV_SDP_DISC_OK_EVT:
return "SDP_DISC_OK";
case BTA_AV_SDP_DISC_FAIL_EVT:
return "SDP_DISC_FAIL";
case BTA_AV_STR_DISC_OK_EVT:
return "STR_DISC_OK";
case BTA_AV_STR_DISC_FAIL_EVT:
return "STR_DISC_FAIL";
case BTA_AV_STR_GETCAP_OK_EVT:
return "STR_GETCAP_OK";
case BTA_AV_STR_GETCAP_FAIL_EVT:
return "STR_GETCAP_FAIL";
case BTA_AV_STR_OPEN_OK_EVT:
return "STR_OPEN_OK";
case BTA_AV_STR_OPEN_FAIL_EVT:
return "STR_OPEN_FAIL";
case BTA_AV_STR_START_OK_EVT:
return "STR_START_OK";
case BTA_AV_STR_START_FAIL_EVT:
return "STR_START_FAIL";
case BTA_AV_STR_CLOSE_EVT:
return "STR_CLOSE";
case BTA_AV_STR_CONFIG_IND_EVT:
return "STR_CONFIG_IND";
case BTA_AV_STR_SECURITY_IND_EVT:
return "STR_SECURITY_IND";
case BTA_AV_STR_SECURITY_CFM_EVT:
return "STR_SECURITY_CFM";
case BTA_AV_STR_WRITE_CFM_EVT:
return "STR_WRITE_CFM";
case BTA_AV_STR_SUSPEND_CFM_EVT:
return "STR_SUSPEND_CFM";
case BTA_AV_STR_RECONFIG_CFM_EVT:
return "STR_RECONFIG_CFM";
case BTA_AV_AVRC_TIMER_EVT:
return "AVRC_TIMER";
case BTA_AV_AVDT_CONNECT_EVT:
return "AVDT_CONNECT";
case BTA_AV_AVDT_DISCONNECT_EVT:
return "AVDT_DISCONNECT";
case BTA_AV_ROLE_CHANGE_EVT:
return "ROLE_CHANGE";
case BTA_AV_AVDT_DELAY_RPT_EVT:
return "AVDT_DELAY_RPT";
case BTA_AV_ACP_CONNECT_EVT:
return "ACP_CONNECT";
case BTA_AV_API_ENABLE_EVT:
return "API_ENABLE";
case BTA_AV_API_REGISTER_EVT:
return "API_REG";
case BTA_AV_API_DEREGISTER_EVT:
return "API_DEREG";
case BTA_AV_API_DISCONNECT_EVT:
return "API_DISCNT";
case BTA_AV_CI_SRC_DATA_READY_EVT:
return "CI_DATA_READY";
case BTA_AV_SIG_CHG_EVT:
return "SIG_CHG";
case BTA_AV_SIGNALLING_TIMER_EVT:
return "SIGNALLING_TIMER";
case BTA_AV_SDP_AVRC_DISC_EVT:
return "SDP_AVRC_DISC";
case BTA_AV_AVRC_CLOSE_EVT:
return "AVRC_CLOSE";
case BTA_AV_AVRC_BROWSE_OPEN_EVT:
return "AVRC_BROWSE_OPEN";
case BTA_AV_AVRC_BROWSE_CLOSE_EVT:
return "AVRC_BROWSE_CLOSE";
case BTA_AV_CONN_CHG_EVT:
return "CONN_CHG";
case BTA_AV_DEREG_COMP_EVT:
return "DEREG_COMP";
#if (AVDT_REPORTING == TRUE)
case BTA_AV_AVDT_RPT_CONN_EVT:
return "RPT_CONN";
#endif
case BTA_AV_API_START_EVT:
return "API_START";
case BTA_AV_API_STOP_EVT:
return "API_STOP";
default:
return "unknown";
}
}