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esp-idf/components/bt/bluedroid/bta/av/bta_av_main.c
wangmengyang 61bd453c15 component/bt: implement AVRCP Target APIs 
1. Add more notification events to the enum according to the event list in AVRCP specification.
2. Add API and callback events for basic AVRCP target functionalities to do init, deinit, callback-registration, connection status indication.
3. Implement API to set/get supported PASSTHROUGH command on local AVRCP TG, implement callback events for remote passthrough command indication.
4. Implement API to set/get supported notification eventIDs on local AVRCP TG, implement API to send event notifications to remote CT. \
   Currently supported event in TG only includes ESP_AVRC_RN_VOLUME_CHANGE(0xd), which can be extended in later commits.
5. Implement callback events for SetAbsoluteVolume command indication on TG.
6. Add limitation of event_ids supported in RegisterNotification command in CT. The supported event_ids include: \
   ESP_AVRC_RN_PLAY_STATUS_CHANGE(0x1), ESP_AVRC_RN_TRACK_CHANGE(0x2), ESP_AVRC_RN_PLAY_POS_CHANGE(0x5), ESP_AVRC_RN_VOLUME_CHANGE(0xd).
7. Add feature bit mask in parameter of callback event ESP_AVRC_CT_REMOTE_FEATURES_EVT for peer feature information got from SDP.
8. Add API and callback event to AVRCP CT to retrieve remote TG's supported notification event capabilities.
9. Modify data type for parameter of callback event ESP_AVRC_CT_CHANGE_NOTIFY_EVT.
10. Change AVRCP version from 1.3 to 1.4 for compatibility cause in using AbsoluteVolume feature.
11. Modify local AVRCP device to be category 1 as CT and category 2 as TG that applies to bluetooth headphones or speakers.
12. Update the use of AVRCP APIs and events in the two examples: a2dp_sink and a2dp_gatts_coex, which include the demo of volume control and notification.
2019-04-10 16:34:13 +08:00

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/******************************************************************************
*
* 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.
*
******************************************************************************/
// #include <assert.h>
#include <string.h>
#include "common/bt_target.h"
#include "common/bt_trace.h"
#include "osi/allocator.h"
#if defined(BTA_AV_INCLUDED) && (BTA_AV_INCLUDED == TRUE)
#include "bta_av_int.h"
#include "bta/utl.h"
#include "stack/l2c_api.h"
#include "stack/l2cdefs.h"
#include "bta/bta_av_co.h"
#if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE)
#include "bta/bta_ar_api.h"
#endif
#include "osi/osi.h"
/*****************************************************************************
** Constants and types
*****************************************************************************/
/* AVDTP protocol timeout values */
#define BTIF_AVK_SERVICE_NAME "Advanced Audio Sink"
#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
/* 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_MSG,
BTA_AV_RC_META_RSP,
BTA_AV_RC_MSG,
BTA_AV_RC_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_msg,
bta_av_rc_meta_rsp,
bta_av_rc_msg,
bta_av_rc_close,
NULL
};
/* 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 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_MSG, BTA_AV_INIT_ST },
/* AVRC_NONE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST },
};
/* state table for open state */
static const UINT8 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 (*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);
#if (BTA_AV_SINK_INCLUDED == TRUE)
static void bta_av_api_sink_enable(tBTA_AV_DATA *p_data);
#endif
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 id, UINT8
app_id, BD_ADDR peer_addr);
static void bta_av_sys_rs_cback (tBTA_SYS_CONN_STATUS status, UINT8 id, UINT8 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_sig_timer, /* BTA_AV_SIG_TIMER_EVT */
bta_av_rc_disc_done, /* BTA_AV_SDP_AVRC_DISC_EVT */
bta_av_rc_closed, /* BTA_AV_AVRC_CLOSE_EVT */
bta_av_conn_chg, /* BTA_AV_CONN_CHG_EVT */
bta_av_dereg_comp, /* BTA_AV_DEREG_COMP_EVT */
#if (BTA_AV_SINK_INCLUDED == TRUE)
bta_av_api_sink_enable, /* BTA_AV_API_SINK_ENABLE_EVT */
#endif
#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 */
#if BTA_DYNAMIC_MEMORY == FALSE
tBTA_AV_CB bta_av_cb;
#else
tBTA_AV_CB *bta_av_cb_ptr;
#endif
#if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
static char *bta_av_st_code(UINT8 state);
#endif
/*******************************************************************************
**
** Function bta_av_timer_cback
**
** Description forward the event to stream state machine
**
** Returns void
**
*******************************************************************************/
static void bta_av_timer_cback(void *p_tle)
{
BT_HDR *p_buf;
TIMER_LIST_ENT *p = (TIMER_LIST_ENT *)p_tle;
int xx;
tBTA_AV_SCB *p_scb = NULL;
/* find the SCB that has the timer */
for (xx = 0; xx < BTA_AV_NUM_STRS; xx++) {
if (bta_av_cb.p_scb[xx] && &(bta_av_cb.p_scb[xx]->timer) == p) {
p_scb = bta_av_cb.p_scb[xx];
break;
}
}
if (p_scb && (p_buf = (BT_HDR *) osi_malloc(sizeof(BT_HDR))) != NULL) {
/* send the event through the audio state machine.
* only when the audio SM is open, the main SM opens the RC connection as INT */
p_buf->event = p->event;
p_buf->layer_specific = p_scb->hndl;
bta_sys_sendmsg(p_buf);
}
}
/*******************************************************************************
**
** Function bta_av_api_enable
**
** Description Handle an API enable event.
**
**
** Returns void
**
*******************************************************************************/
static void bta_av_api_enable(tBTA_AV_DATA *p_data)
{
int i;
tBTA_AV_ENABLE enable;
/* initialize control block */
memset(&bta_av_cb, 0, sizeof(tBTA_AV_CB));
for (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;
/* 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;
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 handle)
{
tBTA_AV_HNDL hndl = (tBTA_AV_HNDL)handle;
tBTA_AV_SCB *p_scb = NULL;
UINT8 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\n", 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_malloc(sizeof(tBTA_AV_SCB));
if (p_ret) {
memset(p_ret, 0, 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->a2d_list = list_new(NULL);
bta_av_cb.p_scb[xx] = p_ret;
}
break;
}
}
}
return p_ret;
}
/*******************************************************************************
**
** Function bta_av_free_scb
**
** Description free stream control block,
**
**
** Returns void
**
*******************************************************************************/
UNUSED_ATTR static void bta_av_free_scb(tBTA_AV_SCB *p_scb)
{
// NOTE(google) This free currently is not called
assert(p_scb != NULL);
list_free(p_scb->a2d_list);
osi_free(p_scb);
}
/*******************************************************************************
*******************************************************************************/
void bta_av_conn_cback(UINT8 handle, BD_ADDR bd_addr, UINT8 event, tAVDT_CTRL *p_data)
{
tBTA_AV_STR_MSG *p_msg;
UINT16 evt = 0;
tBTA_AV_SCB *p_scb = NULL;
UNUSED(handle);
#if( defined BTA_AR_INCLUDED ) && (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 (AVDT_DISCONNECT_IND_EVT == event) {
p_scb = bta_av_addr_to_scb(bd_addr);
}
#if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
else if (AVDT_CONNECT_IND_EVT == event) {
APPL_TRACE_DEBUG("CONN_IND is ACP:%d\n", p_data->hdr.err_param);
}
#endif
if (/*((p_scb && (p_scb->role & BTA_AV_ROLE_AD_ACP)) ||
//(AVDT_CONNECT_IND_EVT == event && AVDT_ACP == p_data->hdr.err_param))
(AVDT_CONNECT_IND_EVT == event))&& */
(p_msg = (tBTA_AV_STR_MSG *) osi_malloc((UINT16) (sizeof(tBTA_AV_STR_MSG)))) != NULL) {
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 (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
if (p_scb) {
APPL_TRACE_DEBUG("scb hndl x%x, role x%x\n", p_scb->hndl, p_scb->role);
}
#endif
APPL_TRACE_DEBUG("conn_cback bd_addr:%02x-%02x-%02x-%02x-%02x-%02x\n",
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(UINT8 handle, AVDT_REPORT_TYPE type,
tAVDT_REPORT_DATA *p_data)
{
UNUSED(handle);
UNUSED(type);
UNUSED(p_data);
/* Do not need to handle report data for now.
* This empty function is here for conformance reasons. */
}
#endif
#if (BTA_AV_SINK_INCLUDED == TRUE)
/*******************************************************************************
**
** Function bta_av_api_sink_enable
**
** Description activate, deactive A2DP Sink,
**
** Returns void
**
*******************************************************************************/
static void bta_av_api_sink_enable(tBTA_AV_DATA *p_data)
{
UINT16 activate_sink = 0;
activate_sink = p_data->hdr.layer_specific;
APPL_TRACE_DEBUG("bta_av_api_sink_enable %d \n", activate_sink)
char p_service_name[BTA_SERVICE_NAME_LEN + 1];
BCM_STRNCPY_S(p_service_name, sizeof(p_service_name),
BTIF_AVK_SERVICE_NAME, BTA_SERVICE_NAME_LEN);
if (activate_sink) {
AVDT_SINK_Activate();
if (bta_av_cb.sdp_a2d_snk_handle == 0) {
bta_av_cb.sdp_a2d_snk_handle = SDP_CreateRecord();
A2D_AddRecord(UUID_SERVCLASS_AUDIO_SINK, p_service_name, NULL,
A2D_SUPF_PLAYER, bta_av_cb.sdp_a2d_snk_handle);
bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SINK);
}
} else {
AVDT_SINK_Deactivate();
if (bta_av_cb.sdp_a2d_snk_handle != 0) {
SDP_DeleteRecord(bta_av_cb.sdp_a2d_snk_handle);
bta_av_cb.sdp_a2d_snk_handle = 0;
bta_sys_remove_uuid(UUID_SERVCLASS_AUDIO_SINK);
}
}
}
#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_AV_CODEC codec_type;
tBTA_UTL_COD cod;
UINT8 index = 0;
char p_avk_service_name[BTA_SERVICE_NAME_LEN + 1];
BCM_STRNCPY_S(p_avk_service_name, sizeof(p_avk_service_name), BTIF_AVK_SERVICE_NAME, BTA_SERVICE_NAME_LEN);
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;
registr.p_bta_av_cos = p_data->api_reg.bta_av_cos;
registr.p_bta_avrc_cos = p_data->api_reg.bta_avrc_cos;
// set the avrc call-out functions
bta_av_cb.p_rc_cos = p_data->api_reg.bta_avrc_cos;
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 */
p_scb->timer.p_cback = (TIMER_CBACK *)&bta_av_timer_cback;
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( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE)
bta_ar_reg_avdt(&reg, 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( defined BTA_AR_INCLUDED ) && (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)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)), BTA_ID_AV);
#endif
bta_ar_reg_avrc(UUID_SERVCLASS_AV_REM_CTRL_TARGET, "AV Remote Control Target\n", NULL,
p_bta_av_cfg->avrc_tg_cat, BTA_ID_AV);
#endif
}
/* Set the Calss of Device (Audio & Capturing/Rendering service class bit) */
if (p_data->api_reg.tsep == AVDT_TSEP_SRC) {
cod.service = BTM_COD_SERVICE_CAPTURING | BTM_COD_SERVICE_AUDIO;
cod.major = BTM_COD_MAJOR_AUDIO;
cod.minor = BTM_COD_MINOR_UNCLASSIFIED;
} else {
#if (BTA_AV_SINK_INCLUDED == TRUE)
cod.service = BTM_COD_SERVICE_RENDERING | BTM_COD_SERVICE_AUDIO;
cod.major = BTM_COD_MAJOR_AUDIO;
cod.minor = BTM_COD_MINOR_LOUDSPEAKER;
#endif
}
utl_set_device_class(&cod, BTA_UTL_SET_COD_ALL);
} /* if 1st channel */
/* get stream configuration and create stream */
/* memset(&cs.cfg,0,sizeof(tAVDT_CFG)); */
cs.cfg.num_codec = 1;
cs.tsep = p_data->api_reg.tsep;
/*
* memset of cs takes care setting call back pointers to null.
cs.p_data_cback = NULL;
cs.p_report_cback = NULL;
*/
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\n", 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;
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_a2d_action;
p_scb->p_cos = registr.p_bta_av_cos;
p_scb->media_type = AVDT_MEDIA_AUDIO;
cs.cfg.psc_mask = AVDT_PSC_TRANS;
cs.media_type = AVDT_MEDIA_AUDIO;
cs.mtu = p_bta_av_cfg->audio_mtu;
cs.flush_to = L2CAP_DEFAULT_FLUSH_TO;
#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;
#if AVDT_MULTIPLEXING == TRUE
cs.cfg.mux_tsid_report = 2;
#endif
}
#endif
if (bta_av_cb.features & BTA_AV_FEAT_DELAY_RPT) {
cs.cfg.psc_mask |= AVDT_PSC_DELAY_RPT;
}
/* keep the configuration in the stream control block */
memcpy(&p_scb->cfg, &cs.cfg, sizeof(tAVDT_CFG));
while (index < BTA_AV_MAX_SEPS &&
(p_scb->p_cos->init)(&codec_type, cs.cfg.codec_info,
&cs.cfg.num_protect, cs.cfg.protect_info, p_data->api_reg.tsep) == TRUE) {
#if (BTA_AV_SINK_INCLUDED == TRUE)
if (p_data->api_reg.tsep == AVDT_TSEP_SNK) {
cs.p_data_cback = bta_av_stream_data_cback;
}
APPL_TRACE_DEBUG(" SEP Type = %d\n", cs.tsep);
#endif
if (AVDT_CreateStream(&p_scb->seps[index].av_handle, &cs) == AVDT_SUCCESS) {
p_scb->seps[index].codec_type = codec_type;
#if (BTA_AV_SINK_INCLUDED == TRUE)
p_scb->seps[index].tsep = cs.tsep;
if (cs.tsep == AVDT_TSEP_SNK) {
p_scb->seps[index].p_app_data_cback = p_data->api_reg.p_app_data_cback;
} else {
p_scb->seps[index].p_app_data_cback = NULL; /* In case of A2DP SOURCE we don't need a callback to handle media packets */
}
#endif
APPL_TRACE_DEBUG("audio[%d] av_handle: %d codec_type: %d\n",
index, p_scb->seps[index].av_handle, p_scb->seps[index].codec_type);
index++;
} else {
break;
}
}
if (!bta_av_cb.reg_audio) {
if (p_data->api_reg.tsep == AVDT_TSEP_SRC) {
/* create the SDP records on the 1st audio channel */
bta_av_cb.sdp_a2d_handle = SDP_CreateRecord();
A2D_AddRecord(UUID_SERVCLASS_AUDIO_SOURCE, p_service_name, NULL,
A2D_SUPF_PLAYER, bta_av_cb.sdp_a2d_handle);
bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SOURCE);
} else {
#if (BTA_AV_SINK_INCLUDED == TRUE)
bta_av_cb.sdp_a2d_snk_handle = SDP_CreateRecord();
A2D_AddRecord(UUID_SERVCLASS_AUDIO_SINK, p_avk_service_name, NULL,
A2D_SUPF_PLAYER, bta_av_cb.sdp_a2d_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( defined BTA_AR_INCLUDED ) && (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)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)), BTA_ID_AV);
#endif
#endif
}
#if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE)
/* create an SDP record as AVRC CT. */
bta_ar_reg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, NULL, NULL,
p_bta_av_cfg->avrc_ct_cat, BTA_ID_AV);
#endif
}
}
bta_av_cb.reg_audio |= BTA_AV_HNDL_TO_MSK(p_scb->hdi);
APPL_TRACE_DEBUG("reg_audio: 0x%x\n", 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 *)&registr);
}
/*******************************************************************************
**
** 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 chnl = (UINT8)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(tBTA_AV_DATA *p_data)
{
UNUSED(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 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
**
*******************************************************************************/
BOOLEAN bta_av_chk_start(tBTA_AV_SCB *p_scb)
{
BOOLEAN 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 mask;
APPL_TRACE_DEBUG("reg_audio: 0x%x\n", 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 (tBTA_SYS_CONN_STATUS status, UINT8 id, UINT8 app_id, BD_ADDR peer_addr)
{
int i;
tBTA_AV_SCB *p_scb = NULL;
tBTA_AV_ROLE_RES *p_buf;
UINT8 cur_role;
UINT8 peer_idx = 0;
UNUSED(status);
APPL_TRACE_DEBUG("bta_av_sys_rs_cback: %d\n", 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) &&
(p_buf = (tBTA_AV_ROLE_RES *) osi_malloc(sizeof(tBTA_AV_ROLE_RES))) != NULL) {
APPL_TRACE_DEBUG("new_role:%d, hci_status:x%x hndl: x%x\n", 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\n",
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_a2d (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 id, UINT8
app_id, BD_ADDR peer_addr)
{
tBTA_AV_SCB *p_scb;
int i;
tBTA_AV_API_STOP stop;
UNUSED(app_id);
UNUSED(peer_addr);
APPL_TRACE_DEBUG("bta_av_sco_chg_cback:%d status:%d\n", 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\n", i);
/* scb is used and started, not suspended automatically */
p_scb->sco_suspend = TRUE;
stop.flush = FALSE;
stop.suspend = TRUE;
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\n", 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
**
*******************************************************************************/
BOOLEAN bta_av_switch_if_needed(tBTA_AV_SCB *p_scb)
{
UINT8 role;
BOOLEAN needed = FALSE;
tBTA_AV_SCB *p_scbi;
int i;
UINT8 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->timer, BTA_AV_AVRC_TIMER_EVT, BTA_AV_RS_TIME_VAL);
}
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
**
*******************************************************************************/
BOOLEAN bta_av_link_role_ok(tBTA_AV_SCB *p_scb, UINT8 bits)
{
UINT8 role;
BOOLEAN is_ok = TRUE;
if (BTM_GetRole(p_scb->peer_addr, &role) == BTM_SUCCESS) {
LOG_INFO("%s hndl:x%x role:%d conn_audio:x%x bits:%d features:x%x\n",
__func__, p_scb->hndl, role, bta_av_cb.conn_audio, bits,
bta_av_cb.features);
if (BTM_ROLE_MASTER != role && (A2D_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 bta_av_chk_mtu(tBTA_AV_SCB *p_scb, UINT16 mtu)
{
UINT16 ret_mtu = BTA_AV_MAX_A2DP_MTU;
tBTA_AV_SCB *p_scbi;
int i;
UINT8 mask;
UNUSED(mtu);
/* 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\n",
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\n",
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.a2d of other audio channels
**
** Returns void
**
*******************************************************************************/
void bta_av_dup_audio_buf(tBTA_AV_SCB *p_scb, BT_HDR *p_buf)
{
tBTA_AV_SCB *p_scbi;
int i;
UINT16 copy_size;
BT_HDR *p_new;
if (!p_buf) {
return;
}
if (bta_av_cb.audio_open_cnt >= 2) {
copy_size = BT_HDR_SIZE + p_buf->len + p_buf->offset;
/* 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->hdi != i) && /* not the original channel */
(bta_av_cb.conn_audio & BTA_AV_HNDL_TO_MSK(i)) && /* connected audio */
p_scbi && p_scbi->co_started ) { /* scb is used and started */
/* enqueue the data only when the stream is started */
p_new = (BT_HDR *)osi_malloc(copy_size);
if (p_new) {
memcpy(p_new, p_buf, copy_size);
list_append(p_scbi->a2d_list, p_new);
if (list_length(p_scbi->a2d_list) > p_bta_av_cfg->audio_mqs) {
// Drop the oldest packet
bta_av_co_audio_drop(p_scbi->hndl);
BT_HDR *p_buf = list_front(p_scbi->a2d_list);
list_remove(p_scbi->a2d_list, p_buf);
osi_free(p_buf);
}
}
}
}
}
}
/*******************************************************************************
**
** 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 event, tBTA_AV_DATA *p_data)
{
tBTA_AV_ST_TBL state_table;
UINT8 action;
#if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
APPL_TRACE_EVENT("AV event=0x%x(%s) state=%d(%s)\n",
event, bta_av_evt_code(event), p_cb->state, bta_av_st_code(p_cb->state));
#else
APPL_TRACE_EVENT("AV event=0x%x state=%d\n", event, p_cb->state);
#endif
/* 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\n", p_cb->state);
/* execute action functions */
if ((action = state_table[event][BTA_AV_ACTION_COL]) != BTA_AV_IGNORE) {
(*bta_av_action[action])(p_cb, p_data);
}
}
/*******************************************************************************
**
** Function bta_av_hdl_event
**
** Description Advanced audio/video main event handling function.
**
**
** Returns BOOLEAN
**
*******************************************************************************/
BOOLEAN bta_av_hdl_event(BT_HDR *p_msg)
{
UINT16 event = p_msg->event;
UINT16 first_event = BTA_AV_FIRST_NSM_EVT;
if (event > BTA_AV_LAST_EVT) {
return TRUE; /* to free p_msg */
}
if (event >= first_event) {
#if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
APPL_TRACE_VERBOSE("AV nsm event=0x%x(%s)\n", event, bta_av_evt_code(event));
#else
APPL_TRACE_VERBOSE("AV nsm event=0x%x\n", event);
#endif
/* non state machine events */
(*bta_av_nsm_act[event - BTA_AV_FIRST_NSM_EVT]) ((tBTA_AV_DATA *) p_msg);
} else if (event >= BTA_AV_FIRST_SM_EVT && event <= BTA_AV_LAST_SM_EVT) {
#if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
APPL_TRACE_VERBOSE("AV sm event=0x%x(%s)\n", event, bta_av_evt_code(event));
#else
APPL_TRACE_VERBOSE("AV sm event=0x%x\n", event);
#endif
/* 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\n", p_msg->layer_specific);
tBTA_AV_SCB *p_scb = bta_av_hndl_to_scb(p_msg->layer_specific);
p_scb->disc_rsn = p_msg->offset;
/* stream state machine events */
bta_av_ssm_execute(p_scb, p_msg->event, (tBTA_AV_DATA *) p_msg);
}
return TRUE;
}
/*****************************************************************************
** Debug Functions
*****************************************************************************/
#if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
/*******************************************************************************
**
** Function bta_av_st_code
**
** Description
**
** Returns char *
**
*******************************************************************************/
UNUSED_ATTR static char *bta_av_st_code(UINT8 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 *
**
*******************************************************************************/
char *bta_av_evt_code(UINT16 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_SIG_TIMER_EVT: return "SIG_TMR";
case BTA_AV_SDP_AVRC_DISC_EVT: return "SDP_AVRC_DISC";
case BTA_AV_AVRC_CLOSE_EVT: return "AVRC_CLOSE";
case BTA_AV_CONN_CHG_EVT: return "CONN_CHG";
case BTA_AV_DEREG_COMP_EVT: return "DEREG_COMP";
#if (BTA_AV_SINK_INCLUDED == TRUE)
case BTA_AV_API_SINK_ENABLE_EVT: return "SINK_ENABLE";
#endif
#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";
}
}
#endif
#endif /* BTA_AV_INCLUDED */
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