| /****************************************************************************** |
| * |
| * 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 |
| #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; |
| } 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_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 BTA_AV_STOP_EVT: |
| 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_av_cb.flags &= ~BTIF_AV_FLAG_PENDING_STOP; |
| btif_av_cb.flags &= ~BTIF_AV_FLAG_PENDING_START; |
| btif_media_check_iop_exceptions(btif_av_cb.peer_bda.address); |
| break; |
| |
| case BTIF_SM_EXIT_EVT: |
| btif_av_cb.flags &= ~BTIF_AV_FLAG_PENDING_START; |
| break; |
| |
| case BTIF_AV_START_STREAM_REQ_EVT: |
| btif_a2dp_setup_codec(); |
| BTA_AvStart(); |
| btif_av_cb.flags |= BTIF_AV_FLAG_PENDING_START; |
| 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_av_cb.flags &= ~BTIF_AV_FLAG_PENDING_START; |
| 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: |
| |
| /* 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; |
| |
| case BTA_AV_RECONFIG_EVT: |
| if((btif_av_cb.flags & BTIF_AV_FLAG_PENDING_START) && |
| (p_av->reconfig.status == BTA_AV_SUCCESS)) |
| { |
| APPL_TRACE_WARNING0("reconfig done BTA_AVstart()"); |
| 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; |
| |
| 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; |
| |
| case BTIF_AV_START_STREAM_REQ_EVT: |
| /* we were remotely started, just ack back the local request */ |
| btif_a2dp_on_started(NULL); |
| 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_av_cb.flags |= BTIF_AV_FLAG_PENDING_STOP; |
| |
| 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: |
| |
| 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 */ |
| 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); |
| |
| /* 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 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_DEBUG3("btif_av_stream_started : sm hdl %d, state %d, flags %x", |
| 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 */ |
| #if (AVRC_METADATA_INCLUDED == TRUE) |
| BTA_AvEnable(BTA_SEC_AUTHENTICATE, |
| BTA_AV_FEAT_RCTG|BTA_AV_FEAT_METADATA|BTA_AV_FEAT_VENDOR|BTA_AV_FEAT_NO_SCO_SSPD, |
| bte_av_callback); |
| #else |
| BTA_AvEnable(BTA_SEC_AUTHENTICATE, (BTA_AV_FEAT_RCTG | BTA_AV_FEAT_NO_SCO_SSPD), |
| bte_av_callback); |
| #endif |
| 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_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)); |
| } |
