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esp-idf/examples/09_a2dp/components/bluedroid_demos/btif/btif_avk.c
wangmengyang 2e8af3a8b7 component/bt: fix typos and complier errors of the merged code 
1. format the source code of A2DP sample
2. fix some compiler errors and warnings
2016-11-26 13:09:55 +08:00

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/******************************************************************************
*
* Copyright (C) 2009-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/*****************************************************************************
*
* Filename: btif_av.c
*
* Description: Bluedroid AV implementation
*
*****************************************************************************/
// #include <assert.h>
#include "bt_trace.h"
#include <string.h>
// #include <hardware/bluetooth.h>
#include "bt_defs.h"
// #include <system/audio.h>
#include "bt_av.h"
#include "allocator.h"
#define LOG_TAG "bt_btif_av"
#include "btif_av.h"
#include "btif_util.h"
#include "btif_profile_queue.h"
#include "bta_api.h"
#include "btif_media.h"
#include "bta_av_api.h"
#include "gki.h"
#include "btu.h"
#include "bt_utils.h"
/*****************************************************************************
** Constants & Macros
******************************************************************************/
#define BTIF_AV_SERVICE_NAME "Advanced Audio"
#define BTIF_TIMEOUT_AV_OPEN_ON_RC_SECS 2
typedef enum {
BTIF_AV_STATE_IDLE = 0x0,
BTIF_AV_STATE_OPENING,
BTIF_AV_STATE_OPENED,
BTIF_AV_STATE_STARTED,
BTIF_AV_STATE_CLOSING
} btif_av_state_t;
/* Should not need dedicated suspend state as actual actions are no
different than open state. Suspend flags are needed however to prevent
media task from trying to restart stream during remote suspend or while
we are in the process of a local suspend */
#define BTIF_AV_FLAG_LOCAL_SUSPEND_PENDING 0x1
#define BTIF_AV_FLAG_REMOTE_SUSPEND 0x2
#define BTIF_AV_FLAG_PENDING_START 0x4
#define BTIF_AV_FLAG_PENDING_STOP 0x8
/*****************************************************************************
** Local type definitions
******************************************************************************/
typedef struct {
tBTA_AV_HNDL bta_handle;
bt_bdaddr_t peer_bda;
btif_sm_handle_t sm_handle;
UINT8 flags;
tBTA_AV_EDR edr;
UINT8 peer_sep; /* sep type of peer device */
} btif_av_cb_t;
typedef struct {
bt_bdaddr_t *target_bda;
uint16_t uuid;
} btif_av_connect_req_t;
typedef struct {
int sample_rate;
int channel_count;
} btif_av_sink_config_req_t;
/*****************************************************************************
** Static variables
******************************************************************************/
static btav_callbacks_t *bt_av_src_callbacks = NULL;
static btav_callbacks_t *bt_av_sink_callbacks = NULL;
static btif_av_cb_t btif_av_cb = {0};
// static TIMER_LIST_ENT tle_av_open_on_rc;
/* both interface and media task needs to be ready to alloc incoming request */
#define CHECK_BTAV_INIT() if (((bt_av_src_callbacks == NULL) &&(bt_av_sink_callbacks == NULL)) \
|| (btif_av_cb.sm_handle == NULL))\
{\
BTIF_TRACE_WARNING("%s: BTAV not initialized\n", __FUNCTION__);\
return BT_STATUS_NOT_READY;\
}\
else\
{\
BTIF_TRACE_EVENT("%s\n", __FUNCTION__);\
}
/* Helper macro to avoid code duplication in the state machine handlers */
#define CHECK_RC_EVENT(e, d) \
case BTA_AV_RC_OPEN_EVT: \
case BTA_AV_RC_CLOSE_EVT: \
case BTA_AV_REMOTE_CMD_EVT: \
case BTA_AV_VENDOR_CMD_EVT: \
case BTA_AV_META_MSG_EVT: \
case BTA_AV_RC_FEAT_EVT: \
case BTA_AV_REMOTE_RSP_EVT: \
{ \
}break; \
static BOOLEAN btif_av_state_idle_handler(btif_sm_event_t event, void *data);
static BOOLEAN btif_av_state_opening_handler(btif_sm_event_t event, void *data);
static BOOLEAN btif_av_state_opened_handler(btif_sm_event_t event, void *data);
static BOOLEAN btif_av_state_started_handler(btif_sm_event_t event, void *data);
static BOOLEAN btif_av_state_closing_handler(btif_sm_event_t event, void *data);
static const btif_sm_handler_t btif_av_state_handlers[] = {
btif_av_state_idle_handler,
btif_av_state_opening_handler,
btif_av_state_opened_handler,
btif_av_state_started_handler,
btif_av_state_closing_handler
};
static void btif_av_event_free_data(btif_sm_event_t event, void *p_data);
/*************************************************************************
** Extern functions
*************************************************************************/
extern tBTA_AV_CO_FUNCTS bta_av_a2d_cos;
/*****************************************************************************
** Local helper functions
******************************************************************************/
const char *dump_av_sm_state_name(btif_av_state_t state)
{
switch (state) {
CASE_RETURN_STR(BTIF_AV_STATE_IDLE)
CASE_RETURN_STR(BTIF_AV_STATE_OPENING)
CASE_RETURN_STR(BTIF_AV_STATE_OPENED)
CASE_RETURN_STR(BTIF_AV_STATE_STARTED)
CASE_RETURN_STR(BTIF_AV_STATE_CLOSING)
default: return "UNKNOWN_STATE";
}
}
const char *dump_av_sm_event_name(btif_av_sm_event_t event)
{
switch ((int)event) {
CASE_RETURN_STR(BTA_AV_ENABLE_EVT)
CASE_RETURN_STR(BTA_AV_REGISTER_EVT)
CASE_RETURN_STR(BTA_AV_OPEN_EVT)
CASE_RETURN_STR(BTA_AV_CLOSE_EVT)
CASE_RETURN_STR(BTA_AV_START_EVT)
CASE_RETURN_STR(BTA_AV_STOP_EVT)
CASE_RETURN_STR(BTA_AV_PROTECT_REQ_EVT)
CASE_RETURN_STR(BTA_AV_PROTECT_RSP_EVT)
CASE_RETURN_STR(BTA_AV_RC_OPEN_EVT)
CASE_RETURN_STR(BTA_AV_RC_CLOSE_EVT)
CASE_RETURN_STR(BTA_AV_REMOTE_CMD_EVT)
CASE_RETURN_STR(BTA_AV_REMOTE_RSP_EVT)
CASE_RETURN_STR(BTA_AV_VENDOR_CMD_EVT)
CASE_RETURN_STR(BTA_AV_VENDOR_RSP_EVT)
CASE_RETURN_STR(BTA_AV_RECONFIG_EVT)
CASE_RETURN_STR(BTA_AV_SUSPEND_EVT)
CASE_RETURN_STR(BTA_AV_PENDING_EVT)
CASE_RETURN_STR(BTA_AV_META_MSG_EVT)
CASE_RETURN_STR(BTA_AV_REJECT_EVT)
CASE_RETURN_STR(BTA_AV_RC_FEAT_EVT)
CASE_RETURN_STR(BTIF_SM_ENTER_EVT)
CASE_RETURN_STR(BTIF_SM_EXIT_EVT)
CASE_RETURN_STR(BTIF_AV_CONNECT_REQ_EVT)
CASE_RETURN_STR(BTIF_AV_DISCONNECT_REQ_EVT)
CASE_RETURN_STR(BTIF_AV_START_STREAM_REQ_EVT)
CASE_RETURN_STR(BTIF_AV_STOP_STREAM_REQ_EVT)
CASE_RETURN_STR(BTIF_AV_SUSPEND_STREAM_REQ_EVT)
CASE_RETURN_STR(BTIF_AV_SINK_CONFIG_REQ_EVT)
default: return "UNKNOWN_EVENT";
}
}
/****************************************************************************
** Local helper functions
*****************************************************************************/
/*****************************************************************************
** Static functions
******************************************************************************/
static void btif_report_connection_state(btav_connection_state_t state, bt_bdaddr_t *bd_addr)
{
if (bt_av_sink_callbacks != NULL) {
HAL_CBACK(bt_av_sink_callbacks, connection_state_cb, state, bd_addr);
} else if (bt_av_src_callbacks != NULL) {
HAL_CBACK(bt_av_src_callbacks, connection_state_cb, state, bd_addr);
}
}
static void btif_report_audio_state(btav_audio_state_t state, bt_bdaddr_t *bd_addr)
{
if (bt_av_sink_callbacks != NULL) {
HAL_CBACK(bt_av_sink_callbacks, audio_state_cb, state, bd_addr);
} else if (bt_av_src_callbacks != NULL) {
HAL_CBACK(bt_av_src_callbacks, audio_state_cb, state, bd_addr);
}
}
/*****************************************************************************
**
** Function btif_av_state_idle_handler
**
** Description State managing disconnected AV link
**
** Returns TRUE if event was processed, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN btif_av_state_idle_handler(btif_sm_event_t event, void *p_data)
{
BTIF_TRACE_DEBUG("%s event:%s flags %x\n", __FUNCTION__,
dump_av_sm_event_name(event), btif_av_cb.flags);
switch (event) {
case BTIF_SM_ENTER_EVT:
/* clear the peer_bda */
memset(&btif_av_cb.peer_bda, 0, sizeof(bt_bdaddr_t));
btif_av_cb.flags = 0;
btif_av_cb.edr = 0;
btif_a2dp_on_idle();
break;
case BTIF_SM_EXIT_EVT:
break;
case BTA_AV_ENABLE_EVT:
break;
case BTA_AV_REGISTER_EVT:
btif_av_cb.bta_handle = ((tBTA_AV *)p_data)->registr.hndl;
break;
case BTA_AV_PENDING_EVT:
case BTIF_AV_CONNECT_REQ_EVT: {
if (event == BTIF_AV_CONNECT_REQ_EVT) {
memcpy(&btif_av_cb.peer_bda, ((btif_av_connect_req_t *)p_data)->target_bda,
sizeof(bt_bdaddr_t));
BTA_AvOpen(btif_av_cb.peer_bda.address, btif_av_cb.bta_handle,
TRUE, BTA_SEC_AUTHENTICATE, ((btif_av_connect_req_t *)p_data)->uuid);
} else if (event == BTA_AV_PENDING_EVT) {
bdcpy(btif_av_cb.peer_bda.address, ((tBTA_AV *)p_data)->pend.bd_addr);
BTA_AvOpen(btif_av_cb.peer_bda.address, btif_av_cb.bta_handle,
TRUE, BTA_SEC_AUTHENTICATE, UUID_SERVCLASS_AUDIO_SOURCE);
}
btif_sm_change_state(btif_av_cb.sm_handle, BTIF_AV_STATE_OPENING);
} break;
case BTA_AV_RC_OPEN_EVT:
case BTA_AV_REMOTE_CMD_EVT:
case BTA_AV_VENDOR_CMD_EVT:
case BTA_AV_META_MSG_EVT:
case BTA_AV_RC_FEAT_EVT:
case BTA_AV_REMOTE_RSP_EVT:
case BTA_AV_RC_CLOSE_EVT:
BTIF_TRACE_WARNING("%s : unhandled RC event:%s\n", __FUNCTION__,
dump_av_sm_event_name(event));
break;
default:
BTIF_TRACE_WARNING("%s : unhandled event:%s\n", __FUNCTION__,
dump_av_sm_event_name(event));
return FALSE;
}
return TRUE;
}
/*****************************************************************************
**
** Function btif_av_state_opening_handler
**
** Description Intermediate state managing events during establishment
** of avdtp channel
**
** Returns TRUE if event was processed, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN btif_av_state_opening_handler(btif_sm_event_t event, void *p_data)
{
BTIF_TRACE_DEBUG("%s event:%s flags %x\n", __FUNCTION__,
dump_av_sm_event_name(event), btif_av_cb.flags);
switch (event) {
case BTIF_SM_ENTER_EVT:
/* inform the application that we are entering connecting state */
btif_report_connection_state(BTAV_CONNECTION_STATE_CONNECTING, &(btif_av_cb.peer_bda));
break;
case BTIF_SM_EXIT_EVT:
break;
case BTA_AV_REJECT_EVT:
BTIF_TRACE_DEBUG(" Received BTA_AV_REJECT_EVT \n");
btif_report_connection_state(BTAV_CONNECTION_STATE_DISCONNECTED, &(btif_av_cb.peer_bda));
btif_sm_change_state(btif_av_cb.sm_handle, BTIF_AV_STATE_IDLE);
break;
case BTA_AV_OPEN_EVT: {
tBTA_AV *p_bta_data = (tBTA_AV *)p_data;
btav_connection_state_t state;
btif_sm_state_t av_state;
BTIF_TRACE_DEBUG("status:%d, edr 0x%x\n", p_bta_data->open.status,
p_bta_data->open.edr);
if (p_bta_data->open.status == BTA_AV_SUCCESS) {
state = BTAV_CONNECTION_STATE_CONNECTED;
av_state = BTIF_AV_STATE_OPENED;
btif_av_cb.edr = p_bta_data->open.edr;
btif_av_cb.peer_sep = p_bta_data->open.sep;
btif_a2dp_set_peer_sep(p_bta_data->open.sep);
} else {
BTIF_TRACE_WARNING("BTA_AV_OPEN_EVT::FAILED status: %d\n",
p_bta_data->open.status );
state = BTAV_CONNECTION_STATE_DISCONNECTED;
av_state = BTIF_AV_STATE_IDLE;
}
/* inform the application of the event */
btif_report_connection_state(state, &(btif_av_cb.peer_bda));
/* change state to open/idle based on the status */
btif_sm_change_state(btif_av_cb.sm_handle, av_state);
#if (BTIF_AV_SRC_INCLUDED == TRUE)
if (btif_av_cb.peer_sep == AVDT_TSEP_SNK) {
/* if queued PLAY command, send it now */
btif_rc_check_handle_pending_play(p_bta_data->open.bd_addr,
(p_bta_data->open.status == BTA_AV_SUCCESS));
} else if (btif_av_cb.peer_sep == AVDT_TSEP_SRC) {
/* if queued PLAY command, send it now */
btif_rc_check_handle_pending_play(p_bta_data->open.bd_addr, FALSE);
/* Bring up AVRCP connection too */
BTA_AvOpenRc(btif_av_cb.bta_handle);
}
#endif
btif_queue_advance();
} break;
case BTIF_AV_SINK_CONFIG_REQ_EVT: {
btif_av_sink_config_req_t req;
// copy to avoid alignment problems
memcpy(&req, p_data, sizeof(req));
BTIF_TRACE_WARNING("BTIF_AV_SINK_CONFIG_REQ_EVT %d %d\n", req.sample_rate,
req.channel_count);
if (btif_av_cb.peer_sep == AVDT_TSEP_SRC && bt_av_sink_callbacks != NULL) {
HAL_CBACK(bt_av_sink_callbacks, audio_config_cb, &(btif_av_cb.peer_bda),
req.sample_rate, req.channel_count);
}
} break;
case BTIF_AV_CONNECT_REQ_EVT:
// Check for device, if same device which moved to opening then ignore callback
if (memcmp ((bt_bdaddr_t *)p_data, &(btif_av_cb.peer_bda),
sizeof(btif_av_cb.peer_bda)) == 0) {
BTIF_TRACE_DEBUG("%s: Same device moved to Opening state,ignore Connect Req\n", __func__);
btif_queue_advance();
break;
} else {
BTIF_TRACE_DEBUG("%s: Moved from idle by Incoming Connection request\n", __func__);
btif_report_connection_state(BTAV_CONNECTION_STATE_DISCONNECTED, (bt_bdaddr_t *)p_data);
btif_queue_advance();
break;
}
case BTA_AV_PENDING_EVT:
// Check for device, if same device which moved to opening then ignore callback
if (memcmp (((tBTA_AV *)p_data)->pend.bd_addr, &(btif_av_cb.peer_bda),
sizeof(btif_av_cb.peer_bda)) == 0) {
BTIF_TRACE_DEBUG("%s: Same device moved to Opening state,ignore Pending Req\n", __func__);
break;
} else {
BTIF_TRACE_DEBUG("%s: Moved from idle by outgoing Connection request\n", __func__);
BTA_AvDisconnect(((tBTA_AV *)p_data)->pend.bd_addr);
break;
}
CHECK_RC_EVENT(event, p_data);
default:
BTIF_TRACE_WARNING("%s : unhandled event:%s\n", __FUNCTION__,
dump_av_sm_event_name(event));
return FALSE;
}
return TRUE;
}
/*****************************************************************************
**
** Function btif_av_state_closing_handler
**
** Description Intermediate state managing events during closing
** of avdtp channel
**
** Returns TRUE if event was processed, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN btif_av_state_closing_handler(btif_sm_event_t event, void *p_data)
{
BTIF_TRACE_DEBUG("%s event:%s flags %x\n", __FUNCTION__,
dump_av_sm_event_name(event), btif_av_cb.flags);
switch (event) {
case BTIF_SM_ENTER_EVT:
#if (BTIF_AV_SRC_INCLUDED == TRUE)
if (btif_av_cb.peer_sep == AVDT_TSEP_SNK) {
/* immediately stop transmission of frames */
btif_a2dp_set_tx_flush(TRUE);
/* wait for audioflinger to stop a2dp */
}
#endif /* (BTIF_AV_SRC_INCLUDED == TRUE) */
if (btif_av_cb.peer_sep == AVDT_TSEP_SRC) {
btif_a2dp_set_rx_flush(TRUE);
}
break;
case BTA_AV_STOP_EVT:
case BTIF_AV_STOP_STREAM_REQ_EVT:
#if (BTIF_AV_SRC_INCLUDED == TRUE)
if (btif_av_cb.peer_sep == AVDT_TSEP_SNK) {
/* immediately flush any pending tx frames while suspend is pending */
btif_a2dp_set_tx_flush(TRUE);
}
#endif
if (btif_av_cb.peer_sep == AVDT_TSEP_SRC) {
btif_a2dp_set_rx_flush(TRUE);
}
btif_a2dp_on_stopped(NULL);
break;
case BTIF_SM_EXIT_EVT:
break;
case BTA_AV_CLOSE_EVT:
/* inform the application that we are disconnecting */
btif_report_connection_state(BTAV_CONNECTION_STATE_DISCONNECTED, &(btif_av_cb.peer_bda));
btif_sm_change_state(btif_av_cb.sm_handle, BTIF_AV_STATE_IDLE);
break;
/* Handle the RC_CLOSE event for the cleanup */
case BTA_AV_RC_CLOSE_EVT:
BTIF_TRACE_WARNING("%s : unhandled RC event:%s\n", __FUNCTION__,
dump_av_sm_event_name(event));
break;
default:
BTIF_TRACE_WARNING("%s : unhandled event:%s\n", __FUNCTION__,
dump_av_sm_event_name(event));
return FALSE;
}
return TRUE;
}
/*****************************************************************************
**
** Function btif_av_state_opened_handler
**
** Description Handles AV events while AVDTP is in OPEN state
**
** Returns TRUE if event was processed, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN btif_av_state_opened_handler(btif_sm_event_t event, void *p_data)
{
tBTA_AV *p_av = (tBTA_AV *)p_data;
BTIF_TRACE_DEBUG("%s event:%s flags %x\n", __FUNCTION__,
dump_av_sm_event_name(event), btif_av_cb.flags);
if ( (event == BTA_AV_REMOTE_CMD_EVT) && (btif_av_cb.flags & BTIF_AV_FLAG_REMOTE_SUSPEND) &&
(p_av->remote_cmd.rc_id == BTA_AV_RC_PLAY) ) {
BTIF_TRACE_EVENT("%s: Resetting remote suspend flag on RC PLAY\n", __FUNCTION__);
btif_av_cb.flags &= ~BTIF_AV_FLAG_REMOTE_SUSPEND;
}
switch (event) {
case BTIF_SM_ENTER_EVT:
btif_av_cb.flags &= ~BTIF_AV_FLAG_PENDING_STOP;
btif_av_cb.flags &= ~BTIF_AV_FLAG_PENDING_START;
break;
case BTIF_SM_EXIT_EVT:
btif_av_cb.flags &= ~BTIF_AV_FLAG_PENDING_START;
break;
case BTIF_AV_START_STREAM_REQ_EVT:
#if (BTIF_AV_SRC_INCLUDED == TRUE)
if (btif_av_cb.peer_sep != AVDT_TSEP_SRC) {
btif_a2dp_setup_codec();
}
#endif
BTA_AvStart();
btif_av_cb.flags |= BTIF_AV_FLAG_PENDING_START;
break;
case BTA_AV_START_EVT: {
BTIF_TRACE_EVENT("BTA_AV_START_EVT status %d, suspending %d, init %d\n",
p_av->start.status, p_av->start.suspending, p_av->start.initiator);
if ((p_av->start.status == BTA_SUCCESS) && (p_av->start.suspending == TRUE)) {
return TRUE;
}
#if (BTIF_AV_SRC_INCLUDED == TRUE)
/* if remote tries to start a2dp when DUT is a2dp source
* then suspend. In case a2dp is sink and call is active
* then disconnect the AVDTP channel
*/
if (!(btif_av_cb.flags & BTIF_AV_FLAG_PENDING_START)) {
if (btif_av_cb.peer_sep == AVDT_TSEP_SNK) {
BTIF_TRACE_EVENT("%s: trigger suspend as remote initiated!!\n", __FUNCTION__);
btif_dispatch_sm_event(BTIF_AV_SUSPEND_STREAM_REQ_EVT, NULL, 0);
}
}
/* In case peer is A2DP SRC we do not want to ack commands on UIPC*/
if (btif_av_cb.peer_sep == AVDT_TSEP_SNK) {
if (btif_a2dp_on_started(&p_av->start,
((btif_av_cb.flags & BTIF_AV_FLAG_PENDING_START) != 0))) {
/* only clear pending flag after acknowledgement */
btif_av_cb.flags &= ~BTIF_AV_FLAG_PENDING_START;
}
}
#endif
/* remain in open state if status failed */
if (p_av->start.status != BTA_AV_SUCCESS) {
return FALSE;
}
if (btif_av_cb.peer_sep == AVDT_TSEP_SRC) {
btif_a2dp_set_rx_flush(FALSE); /* remove flush state, ready for streaming*/
}
/* change state to started, send acknowledgement if start is pending */
if (btif_av_cb.flags & BTIF_AV_FLAG_PENDING_START) {
#if (BTIF_AV_SRC_INCLUDED == TRUE)
if (btif_av_cb.peer_sep == AVDT_TSEP_SNK) {
btif_a2dp_on_started(NULL, TRUE);
}
#endif
/* pending start flag will be cleared when exit current state */
}
btif_sm_change_state(btif_av_cb.sm_handle, BTIF_AV_STATE_STARTED);
} break;
case BTIF_AV_DISCONNECT_REQ_EVT:
BTA_AvClose(btif_av_cb.bta_handle);
/* inform the application that we are disconnecting */
btif_report_connection_state(BTAV_CONNECTION_STATE_DISCONNECTING, &(btif_av_cb.peer_bda));
break;
case BTA_AV_CLOSE_EVT:
/* avdtp link is closed */
btif_a2dp_on_stopped(NULL);
/* inform the application that we are disconnected */
btif_report_connection_state(BTAV_CONNECTION_STATE_DISCONNECTED, &(btif_av_cb.peer_bda));
/* change state to idle, send acknowledgement if start is pending */
if (btif_av_cb.flags & BTIF_AV_FLAG_PENDING_START) {
btif_a2dp_ack_fail();
/* pending start flag will be cleared when exit current state */
}
btif_sm_change_state(btif_av_cb.sm_handle, BTIF_AV_STATE_IDLE);
break;
case BTA_AV_RECONFIG_EVT:
if ((btif_av_cb.flags & BTIF_AV_FLAG_PENDING_START) &&
(p_av->reconfig.status == BTA_AV_SUCCESS)) {
APPL_TRACE_WARNING("reconfig done BTA_AVstart()\n");
BTA_AvStart();
} else if (btif_av_cb.flags & BTIF_AV_FLAG_PENDING_START) {
btif_av_cb.flags &= ~BTIF_AV_FLAG_PENDING_START;
btif_a2dp_ack_fail();
}
break;
case BTIF_AV_CONNECT_REQ_EVT:
if (memcmp ((bt_bdaddr_t *)p_data, &(btif_av_cb.peer_bda),
sizeof(btif_av_cb.peer_bda)) == 0) {
BTIF_TRACE_DEBUG("%s: Ignore BTIF_AV_CONNECT_REQ_EVT for same device\n", __func__);
} else {
BTIF_TRACE_DEBUG("%s: Moved to opened by Other Incoming Conn req\n", __func__);
btif_report_connection_state(BTAV_CONNECTION_STATE_DISCONNECTED,
(bt_bdaddr_t *)p_data);
}
btif_queue_advance();
break;
CHECK_RC_EVENT(event, p_data);
default:
BTIF_TRACE_WARNING("%s : unhandled event:%s\n", __FUNCTION__,
dump_av_sm_event_name(event));
return FALSE;
}
return TRUE;
}
/*****************************************************************************
**
** Function btif_av_state_started_handler
**
** Description Handles AV events while A2DP stream is started
**
** Returns TRUE if event was processed, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN btif_av_state_started_handler(btif_sm_event_t event, void *p_data)
{
tBTA_AV *p_av = (tBTA_AV *)p_data;
BTIF_TRACE_DEBUG("%s event:%s flags %x\n", __FUNCTION__,
dump_av_sm_event_name(event), btif_av_cb.flags);
switch (event) {
case BTIF_SM_ENTER_EVT:
/* we are again in started state, clear any remote suspend flags */
btif_av_cb.flags &= ~BTIF_AV_FLAG_REMOTE_SUSPEND;
btif_report_audio_state(BTAV_AUDIO_STATE_STARTED, &(btif_av_cb.peer_bda));
/* increase the a2dp consumer task priority temporarily when start
** audio playing, to avoid overflow the audio packet queue. */
adjust_priority_a2dp(TRUE);
break;
case BTIF_SM_EXIT_EVT:
/* restore the a2dp consumer task priority when stop audio playing. */
adjust_priority_a2dp(FALSE);
break;
case BTIF_AV_START_STREAM_REQ_EVT:
#if (BTIF_AV_SRC_INCLUDED == TRUE)
/* we were remotely started, just ack back the local request */
if (btif_av_cb.peer_sep == AVDT_TSEP_SNK) {
btif_a2dp_on_started(NULL, TRUE);
}
#endif
break;
/* fixme -- use suspend = true always to work around issue with BTA AV */
case BTIF_AV_STOP_STREAM_REQ_EVT:
case BTIF_AV_SUSPEND_STREAM_REQ_EVT:
/* set pending flag to ensure btif task is not trying to restart
stream while suspend is in progress */
btif_av_cb.flags |= BTIF_AV_FLAG_LOCAL_SUSPEND_PENDING;
/* if we were remotely suspended but suspend locally, local suspend
always overrides */
btif_av_cb.flags &= ~BTIF_AV_FLAG_REMOTE_SUSPEND;
#if (BTIF_AV_SRC_INCLUDED == TRUE)
if (btif_av_cb.peer_sep == AVDT_TSEP_SNK) {
/* immediately stop transmission of frames while suspend is pending */
btif_a2dp_set_tx_flush(TRUE);
}
#endif
if (btif_av_cb.peer_sep == AVDT_TSEP_SRC) {
btif_a2dp_set_rx_flush(TRUE);
btif_a2dp_on_stopped(NULL);
}
BTA_AvStop(TRUE);
break;
case BTIF_AV_DISCONNECT_REQ_EVT:
/* request avdtp to close */
BTA_AvClose(btif_av_cb.bta_handle);
/* inform the application that we are disconnecting */
btif_report_connection_state(BTAV_CONNECTION_STATE_DISCONNECTING, &(btif_av_cb.peer_bda));
/* wait in closing state until fully closed */
btif_sm_change_state(btif_av_cb.sm_handle, BTIF_AV_STATE_CLOSING);
break;
case BTA_AV_SUSPEND_EVT:
BTIF_TRACE_EVENT("BTA_AV_SUSPEND_EVT status %d, init %d\n",
p_av->suspend.status, p_av->suspend.initiator);
/* a2dp suspended, stop media task until resumed */
btif_a2dp_on_suspended(&p_av->suspend);
/* if not successful, remain in current state */
if (p_av->suspend.status != BTA_AV_SUCCESS) {
btif_av_cb.flags &= ~BTIF_AV_FLAG_LOCAL_SUSPEND_PENDING;
#if (BTIF_AV_SRC_INCLUDED == TRUE)
if (btif_av_cb.peer_sep == AVDT_TSEP_SNK) {
/* suspend failed, reset back tx flush state */
btif_a2dp_set_tx_flush(FALSE);
}
#endif
return FALSE;
}
if (p_av->suspend.initiator != TRUE) {
/* remote suspend, notify HAL and await audioflinger to
suspend/stop stream */
/* set remote suspend flag to block media task from restarting
stream only if we did not already initiate a local suspend */
if ((btif_av_cb.flags & BTIF_AV_FLAG_LOCAL_SUSPEND_PENDING) == 0) {
btif_av_cb.flags |= BTIF_AV_FLAG_REMOTE_SUSPEND;
}
btif_report_audio_state(BTAV_AUDIO_STATE_REMOTE_SUSPEND, &(btif_av_cb.peer_bda));
} else {
btif_report_audio_state(BTAV_AUDIO_STATE_STOPPED, &(btif_av_cb.peer_bda));
}
btif_sm_change_state(btif_av_cb.sm_handle, BTIF_AV_STATE_OPENED);
/* suspend completed and state changed, clear pending status */
btif_av_cb.flags &= ~BTIF_AV_FLAG_LOCAL_SUSPEND_PENDING;
break;
case BTA_AV_STOP_EVT:
btif_av_cb.flags |= BTIF_AV_FLAG_PENDING_STOP;
btif_a2dp_on_stopped(&p_av->suspend);
btif_report_audio_state(BTAV_AUDIO_STATE_STOPPED, &(btif_av_cb.peer_bda));
/* if stop was successful, change state to open */
if (p_av->suspend.status == BTA_AV_SUCCESS) {
btif_sm_change_state(btif_av_cb.sm_handle, BTIF_AV_STATE_OPENED);
}
break;
case BTA_AV_CLOSE_EVT:
btif_av_cb.flags |= BTIF_AV_FLAG_PENDING_STOP;
/* avdtp link is closed */
btif_a2dp_on_stopped(NULL);
/* inform the application that we are disconnected */
btif_report_connection_state(BTAV_CONNECTION_STATE_DISCONNECTED, &(btif_av_cb.peer_bda));
btif_sm_change_state(btif_av_cb.sm_handle, BTIF_AV_STATE_IDLE);
break;
CHECK_RC_EVENT(event, p_data);
default:
BTIF_TRACE_WARNING("%s : unhandled event:%s\n", __FUNCTION__,
dump_av_sm_event_name(event));
return FALSE;
}
return TRUE;
}
/*****************************************************************************
** Local event handlers
******************************************************************************/
static void btif_av_handle_event(UINT16 event, char *p_param)
{
btif_sm_dispatch(btif_av_cb.sm_handle, event, (void *)p_param);
btif_av_event_free_data(event, p_param);
}
void btif_av_event_deep_copy(UINT16 event, char *p_dest, char *p_src)
{
tBTA_AV *av_src = (tBTA_AV *)p_src;
tBTA_AV *av_dest = (tBTA_AV *)p_dest;
// First copy the structure
memcpy(p_dest, p_src, sizeof(tBTA_AV));
switch (event) {
case BTA_AV_META_MSG_EVT:
if (av_src->meta_msg.p_data && av_src->meta_msg.len) {
av_dest->meta_msg.p_data = osi_calloc(av_src->meta_msg.len);
assert(av_dest->meta_msg.p_data);
memcpy(av_dest->meta_msg.p_data, av_src->meta_msg.p_data, av_src->meta_msg.len);
}
if (av_src->meta_msg.p_msg) {
av_dest->meta_msg.p_msg = osi_calloc(sizeof(tAVRC_MSG));
assert(av_dest->meta_msg.p_msg);
memcpy(av_dest->meta_msg.p_msg, av_src->meta_msg.p_msg, sizeof(tAVRC_MSG));
if (av_src->meta_msg.p_msg->vendor.p_vendor_data &&
av_src->meta_msg.p_msg->vendor.vendor_len) {
av_dest->meta_msg.p_msg->vendor.p_vendor_data = osi_calloc(
av_src->meta_msg.p_msg->vendor.vendor_len);
assert(av_dest->meta_msg.p_msg->vendor.p_vendor_data);
memcpy(av_dest->meta_msg.p_msg->vendor.p_vendor_data,
av_src->meta_msg.p_msg->vendor.p_vendor_data,
av_src->meta_msg.p_msg->vendor.vendor_len);
}
}
break;
default:
break;
}
}
static void btif_av_event_free_data(btif_sm_event_t event, void *p_data)
{
switch (event) {
case BTA_AV_META_MSG_EVT: {
tBTA_AV *av = (tBTA_AV *)p_data;
if (av->meta_msg.p_data) {
osi_free(av->meta_msg.p_data);
}
if (av->meta_msg.p_msg) {
if (av->meta_msg.p_msg->vendor.p_vendor_data) {
osi_free(av->meta_msg.p_msg->vendor.p_vendor_data);
}
osi_free(av->meta_msg.p_msg);
}
}
break;
default:
break;
}
}
static void bte_av_callback(tBTA_AV_EVT event, tBTA_AV *p_data)
{
btif_transfer_context(btif_av_handle_event, event,
(char *)p_data, sizeof(tBTA_AV), btif_av_event_deep_copy);
}
static void bte_av_media_callback(tBTA_AV_EVT event, tBTA_AV_MEDIA *p_data)
{
btif_sm_state_t state;
UINT8 que_len;
tA2D_STATUS a2d_status;
tA2D_SBC_CIE sbc_cie;
btif_av_sink_config_req_t config_req;
if (event == BTA_AV_MEDIA_DATA_EVT) { /* Switch to BTIF_MEDIA context */
state = btif_sm_get_state(btif_av_cb.sm_handle);
if ( (state == BTIF_AV_STATE_STARTED) || /* send SBC packets only in Started State */
(state == BTIF_AV_STATE_OPENED) ) {
que_len = btif_media_sink_enque_buf((BT_HDR *)p_data);
BTIF_TRACE_DEBUG(" Packets in Que %d\n", que_len);
} else {
return;
}
}
if (event == BTA_AV_MEDIA_SINK_CFG_EVT) {
/* send a command to BT Media Task */
btif_reset_decoder((UINT8 *)p_data);
a2d_status = A2D_ParsSbcInfo(&sbc_cie, (UINT8 *)p_data, FALSE);
if (a2d_status == A2D_SUCCESS) {
/* Switch to BTIF context */
config_req.sample_rate = btif_a2dp_get_track_frequency(sbc_cie.samp_freq);
config_req.channel_count = btif_a2dp_get_track_channel_count(sbc_cie.ch_mode);
btif_transfer_context(btif_av_handle_event, BTIF_AV_SINK_CONFIG_REQ_EVT,
(char *)&config_req, sizeof(config_req), NULL);
} else {
APPL_TRACE_ERROR("ERROR dump_codec_info A2D_ParsSbcInfo fail:%d\n", a2d_status);
}
}
}
/*******************************************************************************
**
** Function btif_av_init
**
** Description Initializes btif AV if not already done
**
** Returns bt_status_t
**
*******************************************************************************/
bt_status_t btif_av_init()
{
if (btif_av_cb.sm_handle == NULL) {
if (!btif_a2dp_start_media_task()) {
return BT_STATUS_FAIL;
}
/* Also initialize the AV state machine */
btif_av_cb.sm_handle =
btif_sm_init((const btif_sm_handler_t *)btif_av_state_handlers, BTIF_AV_STATE_IDLE);
btif_enable_service(BTA_A2DP_SOURCE_SERVICE_ID);
#if (BTA_AV_SINK_INCLUDED == TRUE)
btif_enable_service(BTA_A2DP_SINK_SERVICE_ID);
#endif
btif_a2dp_on_init();
}
return BT_STATUS_SUCCESS;
}
#if (BTIF_AV_SRC_INCLUDED == TRUE)
/*******************************************************************************
**
** Function init_src
**
** Description Initializes the AV interface for source mode
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t init_src(btav_callbacks_t *callbacks)
{
BTIF_TRACE_EVENT("%s()\n", __func__);
bt_status_t status = btif_av_init();
if (status == BT_STATUS_SUCCESS) {
bt_av_src_callbacks = callbacks;
}
return status;
}
#endif
/*******************************************************************************
**
** Function init_sink
**
** Description Initializes the AV interface for sink mode
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t init_sink(btav_callbacks_t *callbacks)
{
BTIF_TRACE_EVENT("%s()\n", __func__);
bt_status_t status = btif_av_init();
if (status == BT_STATUS_SUCCESS) {
bt_av_sink_callbacks = callbacks;
}
return status;
}
/*******************************************************************************
**
** Function connect
**
** Description Establishes the AV signalling channel with the remote headset
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t connect_int(bt_bdaddr_t *bd_addr, uint16_t uuid)
{
btif_av_connect_req_t connect_req;
connect_req.target_bda = bd_addr;
connect_req.uuid = uuid;
BTIF_TRACE_EVENT("%s\n", __FUNCTION__);
btif_sm_dispatch(btif_av_cb.sm_handle, BTIF_AV_CONNECT_REQ_EVT, (char *)&connect_req);
return BT_STATUS_SUCCESS;
}
#if (BTIF_AV_SRC_INCLUDED == TRUE)
static bt_status_t src_connect_sink(bt_bdaddr_t *bd_addr)
{
BTIF_TRACE_EVENT("%s\n", __FUNCTION__);
CHECK_BTAV_INIT();
return btif_queue_connect(UUID_SERVCLASS_AUDIO_SOURCE, bd_addr, connect_int);
}
#endif
static bt_status_t sink_connect_src(bt_bdaddr_t *bd_addr)
{
BTIF_TRACE_EVENT("%s\n", __FUNCTION__);
CHECK_BTAV_INIT();
return btif_queue_connect(UUID_SERVCLASS_AUDIO_SINK, bd_addr, connect_int);
}
/*******************************************************************************
**
** Function disconnect
**
** Description Tears down the AV signalling channel with the remote headset
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t disconnect(bt_bdaddr_t *bd_addr)
{
BTIF_TRACE_EVENT("%s\n", __FUNCTION__);
CHECK_BTAV_INIT();
/* Switch to BTIF context */
return btif_transfer_context(btif_av_handle_event, BTIF_AV_DISCONNECT_REQ_EVT,
(char *)bd_addr, sizeof(bt_bdaddr_t), NULL);
}
/*******************************************************************************
**
** Function cleanup
**
** Description Shuts down the AV interface and does the cleanup
**
** Returns None
**
*******************************************************************************/
static void cleanup(void)
{
BTIF_TRACE_EVENT("%s\n", __FUNCTION__);
btif_a2dp_stop_media_task();
btif_disable_service(BTA_A2DP_SOURCE_SERVICE_ID);
#if (BTA_AV_SINK_INCLUDED == TRUE)
btif_disable_service(BTA_A2DP_SINK_SERVICE_ID);
#endif
/* Also shut down the AV state machine */
btif_sm_shutdown(btif_av_cb.sm_handle);
btif_av_cb.sm_handle = NULL;
}
#if (BTIF_AV_SRC_INCLUDED == TRUE)
static void cleanup_src(void)
{
BTIF_TRACE_EVENT("%s\n", __FUNCTION__);
if (bt_av_src_callbacks) {
bt_av_src_callbacks = NULL;
if (bt_av_sink_callbacks == NULL) {
cleanup();
}
}
}
#endif
static void cleanup_sink(void)
{
BTIF_TRACE_EVENT("%s\n", __FUNCTION__);
if (bt_av_sink_callbacks) {
bt_av_sink_callbacks = NULL;
if (bt_av_src_callbacks == NULL) {
cleanup();
}
}
}
#if (BTIF_AV_SRC_INCLUDED == TRUE)
static const btav_interface_t bt_av_src_interface = {
sizeof(btav_interface_t),
init_src,
src_connect_sink,
disconnect,
cleanup_src,
};
#endif
static const btav_interface_t bt_av_sink_interface = {
sizeof(btav_interface_t),
init_sink,
sink_connect_src,
disconnect,
cleanup_sink,
};
/*******************************************************************************
**
** Function btif_av_get_sm_handle
**
** Description Fetches current av SM handle
**
** Returns None
**
*******************************************************************************/
btif_sm_handle_t btif_av_get_sm_handle(void)
{
return btif_av_cb.sm_handle;
}
/*******************************************************************************
**
** Function btif_av_stream_ready
**
** Description Checks whether AV is ready for starting a stream
**
** Returns None
**
*******************************************************************************/
BOOLEAN btif_av_stream_ready(void)
{
btif_sm_state_t state = btif_sm_get_state(btif_av_cb.sm_handle);
BTIF_TRACE_DEBUG("btif_av_stream_ready : sm hdl %d, state %d, flags %x\n",
(int)btif_av_cb.sm_handle, state, btif_av_cb.flags);
/* also make sure main adapter is enabled */
if (btif_is_enabled() == 0) {
BTIF_TRACE_EVENT("main adapter not enabled");
return FALSE;
}
/* check if we are remotely suspended or stop is pending */
if (btif_av_cb.flags & (BTIF_AV_FLAG_REMOTE_SUSPEND | BTIF_AV_FLAG_PENDING_STOP)) {
return FALSE;
}
return (state == BTIF_AV_STATE_OPENED);
}
/*******************************************************************************
**
** Function btif_av_stream_started_ready
**
** Description Checks whether AV ready for media start in streaming state
**
** Returns None
**
*******************************************************************************/
BOOLEAN btif_av_stream_started_ready(void)
{
btif_sm_state_t state = btif_sm_get_state(btif_av_cb.sm_handle);
BTIF_TRACE_DEBUG("btif_av_stream_started : sm hdl %d, state %d, flags %x\n",
(int)btif_av_cb.sm_handle, state, btif_av_cb.flags);
/* disallow media task to start if we have pending actions */
if (btif_av_cb.flags & (BTIF_AV_FLAG_LOCAL_SUSPEND_PENDING | BTIF_AV_FLAG_REMOTE_SUSPEND
| BTIF_AV_FLAG_PENDING_STOP)) {
return FALSE;
}
return (state == BTIF_AV_STATE_STARTED);
}
/*******************************************************************************
**
** Function btif_dispatch_sm_event
**
** Description Send event to AV statemachine
**
** Returns None
**
*******************************************************************************/
/* used to pass events to AV statemachine from other tasks */
void btif_dispatch_sm_event(btif_av_sm_event_t event, void *p_data, int len)
{
/* Switch to BTIF context */
btif_transfer_context(btif_av_handle_event, event,
(char *)p_data, len, NULL);
}
/*******************************************************************************
**
** Function btif_av_execute_service
**
** Description Initializes/Shuts down the service
**
** Returns BT_STATUS_SUCCESS on success, BT_STATUS_FAIL otherwise
**
*******************************************************************************/
bt_status_t btif_av_execute_service(BOOLEAN b_enable)
{
if (b_enable) {
/* TODO: Removed BTA_SEC_AUTHORIZE since the Java/App does not
* handle this request in order to allow incoming connections to succeed.
* We need to put this back once support for this is added */
/* Added BTA_AV_FEAT_NO_SCO_SSPD - this ensures that the BTA does not
* auto-suspend av streaming on AG events(SCO or Call). The suspend shall
* be initiated by the app/audioflinger layers */
BTA_AvEnable(BTA_SEC_AUTHENTICATE, (BTA_AV_FEAT_NO_SCO_SSPD),
bte_av_callback);
BTA_AvRegister(BTA_AV_CHNL_AUDIO, BTIF_AV_SERVICE_NAME, 0, bte_av_media_callback, &bta_av_a2d_cos);
} else {
BTA_AvDeregister(btif_av_cb.bta_handle);
BTA_AvDisable();
}
return BT_STATUS_SUCCESS;
}
/*******************************************************************************
**
** Function btif_av_sink_execute_service
**
** Description Initializes/Shuts down the service
**
** Returns BT_STATUS_SUCCESS on success, BT_STATUS_FAIL otherwise
**
*******************************************************************************/
bt_status_t btif_av_sink_execute_service(BOOLEAN b_enable)
{
#if (BTA_AV_SINK_INCLUDED == TRUE)
BTA_AvEnable_Sink(b_enable);
#endif
return BT_STATUS_SUCCESS;
}
#if (BTIF_AV_SRC_INCLUDED == TRUE)
/*******************************************************************************
**
** Function btif_av_get_src_interface
**
** Description Get the AV callback interface for A2DP source profile
**
** Returns btav_interface_t
**
*******************************************************************************/
const btav_interface_t *btif_av_get_src_interface(void)
{
BTIF_TRACE_EVENT("%s\n", __FUNCTION__);
return &bt_av_src_interface;
}
#endif
/*******************************************************************************
**
** Function btif_av_get_sink_interface
**
** Description Get the AV callback interface for A2DP sink profile
**
** Returns btav_interface_t
**
*******************************************************************************/
const btav_interface_t *btif_av_get_sink_interface(void)
{
BTIF_TRACE_EVENT("%s\n", __FUNCTION__);
return &bt_av_sink_interface;
}
/*******************************************************************************
**
** Function btif_av_is_connected
**
** Description Checks if av has a connected sink
**
** Returns BOOLEAN
**
*******************************************************************************/
BOOLEAN btif_av_is_connected(void)
{
btif_sm_state_t state = btif_sm_get_state(btif_av_cb.sm_handle);
return ((state == BTIF_AV_STATE_OPENED) || (state == BTIF_AV_STATE_STARTED));
}
/*******************************************************************************
**
** Function btif_av_is_peer_edr
**
** Description Check if the connected a2dp device supports
** EDR or not. Only when connected this function
** will accurately provide a true capability of
** remote peer. If not connected it will always be false.
**
** Returns TRUE if remote device is capable of EDR
**
*******************************************************************************/
BOOLEAN btif_av_is_peer_edr(void)
{
ASSERTC(btif_av_is_connected(), "No active a2dp connection\n", 0);
if (btif_av_cb.edr) {
return TRUE;
} else {
return FALSE;
}
}
/******************************************************************************
**
** Function btif_av_clear_remote_suspend_flag
**
** Description Clears btif_av_cd.flags if BTIF_AV_FLAG_REMOTE_SUSPEND is set
**
** Returns void
******************************************************************************/
void btif_av_clear_remote_suspend_flag(void)
{
BTIF_TRACE_DEBUG("%s: flag :%x\n", __func__, btif_av_cb.flags);
btif_av_cb.flags &= ~BTIF_AV_FLAG_REMOTE_SUSPEND;
}
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