diff options
Diffstat (limited to 'btif/src/btif_av.c')
| -rwxr-xr-x | btif/src/btif_av.c | 970 |
1 files changed, 970 insertions, 0 deletions
diff --git a/btif/src/btif_av.c b/btif/src/btif_av.c new file mode 100755 index 0000000..4419c22 --- /dev/null +++ b/btif/src/btif_av.c @@ -0,0 +1,970 @@ +/****************************************************************************** + * + * 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 <hardware/bluetooth.h> +#include "hardware/bt_av.h" + +#define LOG_TAG "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 "bd.h" +#include "btu.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 + +/***************************************************************************** +** Local type definitions +******************************************************************************/ + +typedef struct +{ + tBTA_AV_HNDL bta_handle; + bt_bdaddr_t peer_bda; + btif_sm_handle_t sm_handle; + UINT8 flags; +} btif_av_cb_t; + +/***************************************************************************** +** Static variables +******************************************************************************/ +static btav_callbacks_t *bt_av_callbacks = NULL; +static btif_av_cb_t btif_av_cb; +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_callbacks == NULL) || (btif_av_cb.sm_handle == NULL))\ +{\ + BTIF_TRACE_WARNING1("%s: BTAV not initialized", __FUNCTION__);\ + return BT_STATUS_NOT_READY;\ +}\ +else\ +{\ + BTIF_TRACE_EVENT1("%s", __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: \ + { \ + btif_rc_handler(e, d);\ + }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 +}; + +/************************************************************************* +** Extern functions +*************************************************************************/ +extern void btif_rc_init(void); +extern void btif_rc_handler(tBTA_AV_EVT event, tBTA_AV *p_data); +extern BOOLEAN btif_rc_get_connected_peer(BD_ADDR peer_addr); +extern void btif_rc_check_handle_pending_play (BD_ADDR peer_addr, BOOLEAN bSendToApp); + +/***************************************************************************** +** 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_RECONFIGURE_REQ_EVT) + + default: return "UNKNOWN_EVENT"; + } +} + +/**************************************************************************** +** Local helper functions +*****************************************************************************/ +/******************************************************************************* +** +** Function btif_initiate_av_open_tmr_hdlr +** +** Description Timer to trigger AV open if the remote headset establishes +** RC connection w/o AV connection. The timer is needed to IOP +** with headsets that do establish AV after RC connection. +** +** Returns void +** +*******************************************************************************/ +static void btif_initiate_av_open_tmr_hdlr(TIMER_LIST_ENT *tle) +{ + BD_ADDR peer_addr; + + /* is there at least one RC connection - There should be */ + if (btif_rc_get_connected_peer(peer_addr)) { + BTIF_TRACE_DEBUG1("%s Issuing connect to the remote RC peer", __FUNCTION__); + btif_sm_dispatch(btif_av_cb.sm_handle, BTIF_AV_CONNECT_REQ_EVT, (void*)&peer_addr); + } + else + { + BTIF_TRACE_ERROR1("%s No connected RC peers", __FUNCTION__); + } +} + +/***************************************************************************** +** Static functions +******************************************************************************/ + +/***************************************************************************** +** +** 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_DEBUG3("%s event:%s flags %x", __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_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, (bt_bdaddr_t*)p_data, sizeof(bt_bdaddr_t)); + } + 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_NONE); + btif_sm_change_state(btif_av_cb.sm_handle, BTIF_AV_STATE_OPENING); + } break; + + case BTA_AV_RC_OPEN_EVT: + /* IOP_FIX: Jabra 620 only does RC open without AV open whenever it connects. So + * as per the AV WP, an AVRC connection cannot exist without an AV connection. Therefore, + * we initiate an AV connection if an RC_OPEN_EVT is received when we are in AV_CLOSED state. + * We initiate the AV connection after a small 3s timeout to avoid any collisions from the + * headsets, as some headsets initiate the AVRC connection first and then + * immediately initiate the AV connection + * + * TODO: We may need to do this only on an AVRCP Play. FixMe + */ + + BTIF_TRACE_DEBUG0("BTA_AV_RC_OPEN_EVT received w/o AV"); + memset(&tle_av_open_on_rc, 0, sizeof(tle_av_open_on_rc)); + tle_av_open_on_rc.param = (UINT32)btif_initiate_av_open_tmr_hdlr; + btu_start_timer(&tle_av_open_on_rc, BTU_TTYPE_USER_FUNC, + BTIF_TIMEOUT_AV_OPEN_ON_RC_SECS); + btif_rc_handler(event, p_data); + break; + + case BTA_AV_REMOTE_CMD_EVT: + case BTA_AV_VENDOR_CMD_EVT: + case BTA_AV_META_MSG_EVT: + case BTA_AV_RC_FEAT_EVT: + btif_rc_handler(event, (tBTA_AV*)p_data); + break; + + case BTA_AV_RC_CLOSE_EVT: + if (tle_av_open_on_rc.in_use) { + BTIF_TRACE_DEBUG0("BTA_AV_RC_CLOSE_EVT: Stopping AV timer."); + btu_stop_timer(&tle_av_open_on_rc); + } + btif_rc_handler(event, p_data); + break; + + default: + BTIF_TRACE_WARNING2("%s : unhandled event:%s", __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_DEBUG3("%s event:%s flags %x", __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 */ + HAL_CBACK(bt_av_callbacks, connection_state_cb, + BTAV_CONNECTION_STATE_CONNECTING, &(btif_av_cb.peer_bda)); + break; + + case BTIF_SM_EXIT_EVT: + 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_DEBUG1("status:%d", p_bta_data->open.status); + + if (p_bta_data->open.status == BTA_AV_SUCCESS) + { + state = BTAV_CONNECTION_STATE_CONNECTED; + av_state = BTIF_AV_STATE_OPENED; + } + else + { + BTIF_TRACE_WARNING1("BTA_AV_OPEN_EVT::FAILED status: %d", + p_bta_data->open.status ); + state = BTAV_CONNECTION_STATE_DISCONNECTED; + av_state = BTIF_AV_STATE_IDLE; + } + + /* inform the application of the event */ + HAL_CBACK(bt_av_callbacks, connection_state_cb, + 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 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)); + btif_queue_advance(); + } break; + + CHECK_RC_EVENT(event, p_data); + + default: + BTIF_TRACE_WARNING2("%s : unhandled event:%s", __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_DEBUG3("%s event:%s flags %x", __FUNCTION__, + dump_av_sm_event_name(event), btif_av_cb.flags); + + switch (event) + { + case BTIF_SM_ENTER_EVT: + + /* immediately stop transmission of frames */ + btif_a2dp_set_tx_flush(TRUE); + /* wait for audioflinger to stop a2dp */ + break; + + case BTIF_AV_STOP_STREAM_REQ_EVT: + /* immediately flush any pending tx frames while suspend is pending */ + btif_a2dp_set_tx_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 */ + HAL_CBACK(bt_av_callbacks, connection_state_cb, + 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_rc_handler(event, (tBTA_AV*)p_data); + break; + + default: + BTIF_TRACE_WARNING2("%s : unhandled event:%s", __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_DEBUG3("%s event:%s flags %x", __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_EVENT1("%s: Resetting remote suspend flag on RC PLAY", __FUNCTION__); + btif_av_cb.flags &= ~BTIF_AV_FLAG_REMOTE_SUSPEND; + } + + switch (event) + { + case BTIF_SM_ENTER_EVT: + btif_media_check_iop_exceptions(btif_av_cb.peer_bda.address); + break; + + case BTIF_SM_EXIT_EVT: + break; + + case BTIF_AV_START_STREAM_REQ_EVT: + btif_a2dp_setup_codec(); + BTA_AvStart(); + break; + + case BTA_AV_START_EVT: + { + BTIF_TRACE_EVENT3("BTA_AV_START_EVT status %d, suspending %d, init %d", + 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; + + btif_a2dp_on_started(&p_av->start); + + /* remain in open state if status failed */ + if (p_av->start.status != BTA_AV_SUCCESS) + return FALSE; + + /* change state to started */ + 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 */ + HAL_CBACK(bt_av_callbacks, connection_state_cb, + BTAV_CONNECTION_STATE_DISCONNECTING, &(btif_av_cb.peer_bda)); + break; + + case BTA_AV_CLOSE_EVT: + + /* inform the application that we are disconnected */ + HAL_CBACK(bt_av_callbacks, connection_state_cb, + 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_WARNING2("%s : unhandled event:%s", __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_DEBUG3("%s event:%s flags %x", __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; + + HAL_CBACK(bt_av_callbacks, audio_state_cb, + BTAV_AUDIO_STATE_STARTED, &(btif_av_cb.peer_bda)); + break; + + case BTIF_SM_EXIT_EVT: + 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; + + /* immediately stop transmission of frames while suspend is pending */ + btif_a2dp_set_tx_flush(TRUE); + + 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 */ + HAL_CBACK(bt_av_callbacks, connection_state_cb, + 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_EVENT2("BTA_AV_SUSPEND_EVT status %d, init %d", + 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; + + /* suspend failed, reset back tx flush state */ + btif_a2dp_set_tx_flush(FALSE); + 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; + + HAL_CBACK(bt_av_callbacks, audio_state_cb, + BTAV_AUDIO_STATE_REMOTE_SUSPEND, &(btif_av_cb.peer_bda)); + } + else + { + HAL_CBACK(bt_av_callbacks, audio_state_cb, + 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_a2dp_on_stopped(&p_av->suspend); + + HAL_CBACK(bt_av_callbacks, audio_state_cb, + 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: + + /* avdtp link is closed */ + + btif_a2dp_on_stopped(NULL); + + /* inform the application that we are disconnected */ + HAL_CBACK(bt_av_callbacks, connection_state_cb, + 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_WARNING2("%s : unhandled event:%s", __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); +} + +static void bte_av_callback(tBTA_AV_EVT event, tBTA_AV *p_data) +{ + /* Switch to BTIF context */ + btif_transfer_context(btif_av_handle_event, event, + (char*)p_data, sizeof(tBTA_AV), NULL); +} + +/******************************************************************************* +** +** Function btif_av_init +** +** Description Initializes btif AV if not already done +** +** Returns bt_status_t +** +*******************************************************************************/ + +bt_status_t btif_av_init(void) +{ + if (btif_av_cb.sm_handle == NULL) + { + if (btif_a2dp_start_media_task() != GKI_SUCCESS) + return BT_STATUS_FAIL; + + btif_enable_service(BTA_A2DP_SERVICE_ID); + + /* Initialize the AVRC CB */ + btif_rc_init(); + + /* 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_a2dp_on_init(); + + return BT_STATUS_SUCCESS; + } + + return BT_STATUS_DONE; +} + +/******************************************************************************* +** +** Function init +** +** Description Initializes the AV interface +** +** Returns bt_status_t +** +*******************************************************************************/ + +static bt_status_t init(btav_callbacks_t* callbacks ) +{ + int status; + + BTIF_TRACE_EVENT1("%s", __FUNCTION__); + + if (bt_av_callbacks) + return BT_STATUS_DONE; + + bt_av_callbacks = callbacks; + btif_av_cb.sm_handle = NULL; + + return btif_av_init(); +} + +/******************************************************************************* +** +** 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) +{ + BTIF_TRACE_EVENT1("%s", __FUNCTION__); + + btif_sm_dispatch(btif_av_cb.sm_handle, BTIF_AV_CONNECT_REQ_EVT, (char*)bd_addr); + + return BT_STATUS_SUCCESS; +} + +static bt_status_t connect(bt_bdaddr_t *bd_addr) +{ + BTIF_TRACE_EVENT1("%s", __FUNCTION__); + CHECK_BTAV_INIT(); + + return btif_queue_connect(UUID_SERVCLASS_AUDIO_SOURCE, 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_EVENT1("%s", __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_EVENT1("%s", __FUNCTION__); + + if (bt_av_callbacks) + { + btif_a2dp_stop_media_task(); + + btif_disable_service(BTA_A2DP_SERVICE_ID); + bt_av_callbacks = NULL; + + /* Also shut down the AV state machine */ + btif_sm_shutdown(btif_av_cb.sm_handle); + btif_av_cb.sm_handle = NULL; + } + return; +} + +static const btav_interface_t bt_av_interface = { + sizeof(btav_interface_t), + init, + connect, + disconnect, + cleanup, +}; + +/******************************************************************************* +** +** 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_DEBUG3("btif_av_stream_ready : sm hdl %d, state %d, flags %x", + btif_av_cb.sm_handle, state, btif_av_cb.flags); + + /* also make sure main adapter is enabled */ + if (btif_is_enabled() == 0) + { + BTIF_TRACE_EVENT0("main adapter not enabled"); + return FALSE; + } + + /* check if we are remotely suspended */ + if (btif_av_cb.flags & BTIF_AV_FLAG_REMOTE_SUSPEND) + 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_DEBUG3("btif_av_stream_started : sm hdl %d, state %d, flags %x", + btif_av_cb.sm_handle, state, btif_av_cb.flags); + + /* don't allow media task to start if we are suspending or + remotely suspended (not yet changed state) */ + if (btif_av_cb.flags & (BTIF_AV_FLAG_LOCAL_SUSPEND_PENDING | BTIF_AV_FLAG_REMOTE_SUSPEND)) + 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_RCTG | BTA_AV_FEAT_NO_SCO_SSPD), + bte_av_callback); + BTA_AvRegister(BTA_AV_CHNL_AUDIO, BTIF_AV_SERVICE_NAME, 0); + } + else { + BTA_AvDeregister(btif_av_cb.bta_handle); + BTA_AvDisable(); + } + return BT_STATUS_SUCCESS; +} + +/******************************************************************************* +** +** Function btif_av_get_interface +** +** Description Get the AV callback interface +** +** Returns btav_interface_t +** +*******************************************************************************/ +const btav_interface_t *btif_av_get_interface(void) +{ + BTIF_TRACE_EVENT1("%s", __FUNCTION__); + return &bt_av_interface; +} + +/******************************************************************************* +** +** Function btif_av_is_rc_open_without_a2dp +** +** Description Checks if GAVDTP Open notification to app is pending (2 second timer) +** +** 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)); +} |