/****************************************************************************** * * Copyright (C) 2004-2012 Broadcom Corporation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ******************************************************************************/ /****************************************************************************** * * This is the main implementation file for the BTA advanced audio/video. * ******************************************************************************/ #include "bt_target.h" #if defined(BTA_AV_INCLUDED) && (BTA_AV_INCLUDED == TRUE) #include #include "bta_av_int.h" #include "utl.h" #include "bd.h" #include "l2c_api.h" #include "l2cdefs.h" #include "bta_av_co.h" #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE) #include "bta_ar_api.h" #endif /***************************************************************************** ** Constants and types *****************************************************************************/ /* AVDTP protocol timeout values */ #ifndef BTA_AV_RET_TOUT #define BTA_AV_RET_TOUT 4 #endif #ifndef BTA_AV_SIG_TOUT #define BTA_AV_SIG_TOUT 4 #endif #ifndef BTA_AV_IDLE_TOUT #define BTA_AV_IDLE_TOUT 10 #endif /* the delay time in milliseconds to retry role switch */ #ifndef BTA_AV_RS_TIME_VAL #define BTA_AV_RS_TIME_VAL 1000 #endif /* state machine states */ enum { BTA_AV_INIT_ST, BTA_AV_OPEN_ST }; /* state machine action enumeration list */ enum { BTA_AV_DISABLE, BTA_AV_RC_OPENED, BTA_AV_RC_REMOTE_CMD, BTA_AV_RC_VENDOR_CMD, BTA_AV_RC_VENDOR_RSP, BTA_AV_RC_FREE_RSP, BTA_AV_RC_FREE_MSG, BTA_AV_RC_META_RSP, BTA_AV_RC_MSG, BTA_AV_RC_CLOSE, BTA_AV_NUM_ACTIONS }; #define BTA_AV_IGNORE BTA_AV_NUM_ACTIONS /* type for action functions */ typedef void (*tBTA_AV_ACTION)(tBTA_AV_CB *p_cb, tBTA_AV_DATA *p_data); /* action functions */ const tBTA_AV_ACTION bta_av_action[] = { bta_av_disable, bta_av_rc_opened, bta_av_rc_remote_cmd, bta_av_rc_vendor_cmd, bta_av_rc_vendor_rsp, bta_av_rc_free_rsp, bta_av_rc_free_msg, bta_av_rc_meta_rsp, bta_av_rc_msg, bta_av_rc_close, NULL }; /* state table information */ #define BTA_AV_ACTION_COL 0 /* position of actions */ #define BTA_AV_NEXT_STATE 1 /* position of next state */ #define BTA_AV_NUM_COLS 2 /* number of columns in state tables */ /* state table for init state */ static const UINT8 bta_av_st_init[][BTA_AV_NUM_COLS] = { /* Event Action 1 Next state */ /* API_DISABLE_EVT */ {BTA_AV_DISABLE, BTA_AV_INIT_ST }, /* API_REMOTE_CMD_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST }, /* API_VENDOR_CMD_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST }, /* API_VENDOR_RSP_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST }, /* API_META_RSP_EVT */ {BTA_AV_RC_FREE_RSP, BTA_AV_INIT_ST }, /* API_RC_CLOSE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST }, /* AVRC_OPEN_EVT */ {BTA_AV_RC_OPENED, BTA_AV_OPEN_ST }, /* AVRC_MSG_EVT */ {BTA_AV_RC_FREE_MSG, BTA_AV_INIT_ST }, /* AVRC_NONE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST }, }; /* state table for open state */ static const UINT8 bta_av_st_open[][BTA_AV_NUM_COLS] = { /* Event Action 1 Next state */ /* API_DISABLE_EVT */ {BTA_AV_DISABLE, BTA_AV_INIT_ST }, /* API_REMOTE_CMD_EVT */ {BTA_AV_RC_REMOTE_CMD, BTA_AV_OPEN_ST }, /* API_VENDOR_CMD_EVT */ {BTA_AV_RC_VENDOR_CMD, BTA_AV_OPEN_ST }, /* API_VENDOR_RSP_EVT */ {BTA_AV_RC_VENDOR_RSP, BTA_AV_OPEN_ST }, /* API_META_RSP_EVT */ {BTA_AV_RC_META_RSP, BTA_AV_OPEN_ST }, /* API_RC_CLOSE_EVT */ {BTA_AV_RC_CLOSE, BTA_AV_OPEN_ST }, /* AVRC_OPEN_EVT */ {BTA_AV_RC_OPENED, BTA_AV_OPEN_ST }, /* AVRC_MSG_EVT */ {BTA_AV_RC_MSG, BTA_AV_OPEN_ST }, /* AVRC_NONE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST }, }; /* type for state table */ typedef const UINT8 (*tBTA_AV_ST_TBL)[BTA_AV_NUM_COLS]; /* state table */ static const tBTA_AV_ST_TBL bta_av_st_tbl[] = { bta_av_st_init, bta_av_st_open }; typedef void (*tBTA_AV_NSM_ACT)(tBTA_AV_DATA *p_data); static void bta_av_api_enable(tBTA_AV_DATA *p_data); static void bta_av_api_register(tBTA_AV_DATA *p_data); static void bta_av_ci_data(tBTA_AV_DATA *p_data); #if (AVDT_REPORTING == TRUE) static void bta_av_rpc_conn(tBTA_AV_DATA *p_data); #endif static void bta_av_api_to_ssm(tBTA_AV_DATA *p_data); static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, UINT8 id, UINT8 app_id, BD_ADDR peer_addr); static void bta_av_sys_rs_cback (tBTA_SYS_CONN_STATUS status,UINT8 id, UINT8 app_id, BD_ADDR peer_addr); /* action functions */ const tBTA_AV_NSM_ACT bta_av_nsm_act[] = { bta_av_api_enable, /* BTA_AV_API_ENABLE_EVT */ bta_av_api_register, /* BTA_AV_API_REGISTER_EVT */ bta_av_api_deregister, /* BTA_AV_API_DEREGISTER_EVT */ bta_av_api_disconnect, /* BTA_AV_API_DISCONNECT_EVT */ bta_av_ci_data, /* BTA_AV_CI_SRC_DATA_READY_EVT */ bta_av_sig_chg, /* BTA_AV_SIG_CHG_EVT */ bta_av_sig_timer, /* BTA_AV_SIG_TIMER_EVT */ bta_av_rc_disc_done, /* BTA_AV_SDP_AVRC_DISC_EVT */ bta_av_rc_closed, /* BTA_AV_AVRC_CLOSE_EVT */ bta_av_conn_chg, /* BTA_AV_CONN_CHG_EVT */ bta_av_dereg_comp, /* BTA_AV_DEREG_COMP_EVT */ #if (AVDT_REPORTING == TRUE) bta_av_rpc_conn, /* BTA_AV_AVDT_RPT_CONN_EVT */ #endif bta_av_api_to_ssm, /* BTA_AV_API_START_EVT */ bta_av_api_to_ssm, /* BTA_AV_API_STOP_EVT */ }; /***************************************************************************** ** Global data *****************************************************************************/ /* AV control block */ #if BTA_DYNAMIC_MEMORY == FALSE tBTA_AV_CB bta_av_cb; #endif #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE) static char *bta_av_st_code(UINT8 state); #endif /******************************************************************************* ** ** Function bta_av_timer_cback ** ** Description forward the event to stream state machine ** ** Returns void ** *******************************************************************************/ static void bta_av_timer_cback(void *p_tle) { BT_HDR *p_buf; TIMER_LIST_ENT *p = (TIMER_LIST_ENT *)p_tle; int xx; tBTA_AV_SCB *p_scb = NULL; /* find the SCB that has the timer */ for(xx=0; xxtimer)== p) { p_scb = bta_av_cb.p_scb[xx]; break; } } if (p_scb && (p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) { /* send the event through the audio state machine. * only when the audio SM is open, the main SM opens the RC connection as INT */ p_buf->event = p->event; p_buf->layer_specific = p_scb->hndl; bta_sys_sendmsg(p_buf); } } /******************************************************************************* ** ** Function bta_av_api_enable ** ** Description Handle an API enable event. ** ** ** Returns void ** *******************************************************************************/ static void bta_av_api_enable(tBTA_AV_DATA *p_data) { int i; tBTA_AV_ENABLE enable; /* initialize control block */ memset(&bta_av_cb, 0, sizeof(tBTA_AV_CB)); for(i=0; iapi_enable.p_cback; bta_av_cb.features = p_data->api_enable.features; bta_av_cb.sec_mask = p_data->api_enable.sec_mask; enable.features = bta_av_cb.features; /* Register for SCO change event */ if (!(bta_av_cb.features & BTA_AV_FEAT_NO_SCO_SSPD)) { bta_sys_sco_register(bta_av_sco_chg_cback); } /* call callback with enable event */ (*bta_av_cb.p_cback)(BTA_AV_ENABLE_EVT, (tBTA_AV *)&enable); } /******************************************************************************* ** ** Function bta_av_addr_to_scb ** ** Description find the stream control block by the peer addr ** ** Returns void ** *******************************************************************************/ static tBTA_AV_SCB * bta_av_addr_to_scb(BD_ADDR bd_addr) { tBTA_AV_SCB * p_scb = NULL; int xx; for(xx=0; xxpeer_addr)) { p_scb = bta_av_cb.p_scb[xx]; break; } } } return p_scb; } /******************************************************************************* ** ** Function bta_av_hndl_to_scb ** ** Description find the stream control block by the handle ** ** Returns void ** *******************************************************************************/ tBTA_AV_SCB * bta_av_hndl_to_scb(UINT16 handle) { tBTA_AV_HNDL hndl = (tBTA_AV_HNDL)handle; tBTA_AV_SCB * p_scb = NULL; UINT8 idx = (hndl & BTA_AV_HNDL_MSK); if(idx && (idx <= BTA_AV_NUM_STRS) ) { p_scb = bta_av_cb.p_scb[idx-1]; } return p_scb; } /******************************************************************************* ** ** Function bta_av_alloc_scb ** ** Description allocate stream control block, ** register the service to stack ** create SDP record ** ** Returns void ** *******************************************************************************/ static tBTA_AV_SCB * bta_av_alloc_scb(tBTA_AV_CHNL chnl) { tBTA_AV_SCB *p_ret = NULL; int xx; tBTA_AV_STATUS sts = BTA_AV_SUCCESS; if(chnl == BTA_AV_CHNL_VIDEO) { if(p_bta_av_cfg->p_act_tbl == NULL || p_bta_av_cfg->p_reg == NULL) { APPL_TRACE_ERROR0("Video streaming not supported"); sts = BTA_AV_FAIL; } else { /* allow only one Video channel */ if(bta_av_cb.reg_video) { APPL_TRACE_ERROR0("Already registered"); sts = BTA_AV_FAIL; } } } else if(chnl != BTA_AV_CHNL_AUDIO) { APPL_TRACE_ERROR1("bad channel: %d", chnl); sts = BTA_AV_FAIL; } if(sts == BTA_AV_SUCCESS) { for(xx=0; xxrc_handle = BTA_AV_RC_HANDLE_NONE; p_ret->chnl = chnl; p_ret->hndl = (tBTA_AV_HNDL)((xx + 1) | chnl); p_ret->hdi = xx; bta_av_cb.p_scb[xx] = p_ret; } break; } } } return p_ret; } /******************************************************************************* *******************************************************************************/ void bta_av_conn_cback(UINT8 handle, BD_ADDR bd_addr, UINT8 event, tAVDT_CTRL *p_data) { tBTA_AV_STR_MSG *p_msg; UINT16 evt = 0; tBTA_AV_SCB *p_scb = NULL; #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE) if (event == BTA_AR_AVDT_CONN_EVT || event == AVDT_CONNECT_IND_EVT || event == AVDT_DISCONNECT_IND_EVT) #else if (event == AVDT_CONNECT_IND_EVT || event == AVDT_DISCONNECT_IND_EVT) #endif { evt = BTA_AV_SIG_CHG_EVT; if(AVDT_DISCONNECT_IND_EVT == event) p_scb = bta_av_addr_to_scb(bd_addr); #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE) else if (AVDT_CONNECT_IND_EVT == event) { APPL_TRACE_DEBUG1("CONN_IND is ACP:%d", p_data->hdr.err_param); } #endif if (/*((p_scb && (p_scb->role & BTA_AV_ROLE_AD_ACP)) || //(AVDT_CONNECT_IND_EVT == event && AVDT_ACP == p_data->hdr.err_param)) (AVDT_CONNECT_IND_EVT == event))&& */ (p_msg = (tBTA_AV_STR_MSG *) GKI_getbuf((UINT16) (sizeof(tBTA_AV_STR_MSG)))) != NULL) { p_msg->hdr.event = evt; p_msg->hdr.layer_specific = event; p_msg->hdr.offset = p_data->hdr.err_param; bdcpy(p_msg->bd_addr, bd_addr); #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE) if(p_scb) { APPL_TRACE_DEBUG2("scb hndl x%x, role x%x", p_scb->hndl, p_scb->role); } #endif APPL_TRACE_DEBUG6("conn_cback bd_addr:%02x-%02x-%02x-%02x-%02x-%02x", bd_addr[0], bd_addr[1], bd_addr[2], bd_addr[3], bd_addr[4], bd_addr[5]); bta_sys_sendmsg(p_msg); } } } #if AVDT_REPORTING == TRUE /******************************************************************************* ** ** Function bta_av_a2dp_report_cback ** ** Description A2DP report callback. ** ** Returns void ** *******************************************************************************/ static void bta_av_a2dp_report_cback(UINT8 handle, AVDT_REPORT_TYPE type, tAVDT_REPORT_DATA *p_data) { /* Do not need to handle report data for now. * This empty function is here for conformance reasons. */ } #endif /******************************************************************************* ** ** Function bta_av_api_register ** ** Description allocate stream control block, ** register the service to stack ** create SDP record ** ** Returns void ** *******************************************************************************/ static void bta_av_api_register(tBTA_AV_DATA *p_data) { tBTA_AV_REGISTER registr; tBTA_AV_SCB *p_scb; /* stream control block */ tAVDT_REG reg; tAVDT_CS cs; char *p_service_name; tBTA_AV_CODEC codec_type; tBTA_UTL_COD cod; UINT8 index = 0; memset(&cs,0,sizeof(tAVDT_CS)); registr.status = BTA_AV_FAIL_RESOURCES; registr.app_id = p_data->api_reg.app_id; registr.chnl = (tBTA_AV_CHNL)p_data->hdr.layer_specific; do { p_scb = bta_av_alloc_scb(registr.chnl); if(p_scb == NULL) { APPL_TRACE_ERROR0("failed to alloc SCB"); break; } registr.hndl = p_scb->hndl; p_scb->app_id = registr.app_id; /* initialize the stream control block */ p_scb->timer.p_cback = (TIMER_CBACK*)&bta_av_timer_cback; registr.status = BTA_AV_SUCCESS; if((bta_av_cb.reg_audio + bta_av_cb.reg_video) == 0) { /* the first channel registered. register to AVDTP */ reg.ctrl_mtu = p_bta_av_cfg->sig_mtu; reg.ret_tout = BTA_AV_RET_TOUT; reg.sig_tout = BTA_AV_SIG_TOUT; reg.idle_tout = BTA_AV_IDLE_TOUT; reg.sec_mask = bta_av_cb.sec_mask; #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE) bta_ar_reg_avdt(®, bta_av_conn_cback, BTA_ID_AV); #endif bta_sys_role_chg_register(&bta_av_sys_rs_cback); /* create remote control TG service if required */ if (bta_av_cb.features & (BTA_AV_FEAT_RCTG)) { /* register with no authorization; let AVDTP use authorization instead */ #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE) #if (BTA_AV_WITH_AVCTP_AUTHORIZATION == TRUE) bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu, bta_av_cb.sec_mask, BTA_ID_AV); #else bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu, (UINT8)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)), BTA_ID_AV); #endif bta_ar_reg_avrc(UUID_SERVCLASS_AV_REM_CTRL_TARGET, "AV Remote Control Target", NULL, p_bta_av_cfg->avrc_tg_cat, BTA_ID_AV); #endif } /* Set the Capturing service class bit */ cod.service = BTM_COD_SERVICE_CAPTURING; utl_set_device_class(&cod, BTA_UTL_SET_COD_SERVICE_CLASS); } /* if 1st channel */ /* get stream configuration and create stream */ /* memset(&cs.cfg,0,sizeof(tAVDT_CFG)); */ cs.cfg.num_codec = 1; cs.tsep = AVDT_TSEP_SRC; /* * memset of cs takes care setting call back pointers to null. cs.p_data_cback = NULL; cs.p_report_cback = NULL; */ cs.nsc_mask = AVDT_NSC_RECONFIG | ((bta_av_cb.features & BTA_AV_FEAT_PROTECT) ? 0 : AVDT_NSC_SECURITY); APPL_TRACE_DEBUG1("nsc_mask: 0x%x", cs.nsc_mask); if (p_data->api_reg.p_service_name[0] == 0) { p_service_name = NULL; } else { p_service_name = p_data->api_reg.p_service_name; } p_scb->suspend_sup = TRUE; p_scb->recfg_sup = TRUE; cs.p_ctrl_cback = bta_av_dt_cback[p_scb->hdi]; if(registr.chnl == BTA_AV_CHNL_AUDIO) { /* set up the audio stream control block */ p_scb->p_act_tbl = (const tBTA_AV_ACT *)bta_av_a2d_action; p_scb->p_cos = &bta_av_a2d_cos; p_scb->media_type= AVDT_MEDIA_AUDIO; cs.cfg.psc_mask = AVDT_PSC_TRANS; cs.media_type = AVDT_MEDIA_AUDIO; cs.mtu = p_bta_av_cfg->audio_mtu; cs.flush_to = L2CAP_DEFAULT_FLUSH_TO; #if AVDT_REPORTING == TRUE if(bta_av_cb.features & BTA_AV_FEAT_REPORT) { cs.cfg.psc_mask |= AVDT_PSC_REPORT; cs.p_report_cback = bta_av_a2dp_report_cback; #if AVDT_MULTIPLEXING == TRUE cs.cfg.mux_tsid_report = 2; #endif } #endif if(bta_av_cb.features & BTA_AV_FEAT_DELAY_RPT) cs.cfg.psc_mask |= AVDT_PSC_DELAY_RPT; /* keep the configuration in the stream control block */ memcpy(&p_scb->cfg, &cs.cfg, sizeof(tAVDT_CFG)); while(index < BTA_AV_MAX_SEPS && (*bta_av_a2d_cos.init)(&codec_type, cs.cfg.codec_info, &cs.cfg.num_protect, cs.cfg.protect_info, index) == TRUE) { if(AVDT_CreateStream(&p_scb->seps[index].av_handle, &cs) == AVDT_SUCCESS) { p_scb->seps[index].codec_type = codec_type; APPL_TRACE_DEBUG3("audio[%d] av_handle: %d codec_type: %d", index, p_scb->seps[index].av_handle, p_scb->seps[index].codec_type); index++; } else break; } if(!bta_av_cb.reg_audio) { /* create the SDP records on the 1st audio channel */ bta_av_cb.sdp_a2d_handle = SDP_CreateRecord(); A2D_AddRecord(UUID_SERVCLASS_AUDIO_SOURCE, p_service_name, NULL, A2D_SUPF_PLAYER, bta_av_cb.sdp_a2d_handle); bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SOURCE); /* start listening when A2DP is registered */ if (bta_av_cb.features & BTA_AV_FEAT_RCTG) bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1); /* if the AV and AVK are both supported, it cannot support the CT role */ if (bta_av_cb.features & (BTA_AV_FEAT_RCCT)) { /* if TG is not supported, we need to register to AVCT now */ if ((bta_av_cb.features & (BTA_AV_FEAT_RCTG)) == 0) { #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE) #if (BTA_AV_WITH_AVCTP_AUTHORIZATION == TRUE) bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu, bta_av_cb.sec_mask, BTA_ID_AV); #else bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu, (UINT8)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)), BTA_ID_AV); #endif #endif } #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE) /* create an SDP record as AVRC CT. */ bta_ar_reg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, NULL, NULL, p_bta_av_cfg->avrc_ct_cat, BTA_ID_AV); #endif } } bta_av_cb.reg_audio |= BTA_AV_HNDL_TO_MSK(p_scb->hdi); APPL_TRACE_DEBUG1("reg_audio: 0x%x",bta_av_cb.reg_audio); } else { bta_av_cb.reg_video = BTA_AV_HNDL_TO_MSK(p_scb->hdi); bta_av_cb.sdp_vdp_handle = SDP_CreateRecord(); /* register the video channel */ /* no need to verify the function pointer here. it's verified prior */ (*p_bta_av_cfg->p_reg)(&cs, p_service_name, p_scb); } } while (0); /* call callback with register event */ (*bta_av_cb.p_cback)(BTA_AV_REGISTER_EVT, (tBTA_AV *)®istr); } /******************************************************************************* ** ** Function bta_av_api_deregister ** ** Description de-register a channel ** ** ** Returns void ** *******************************************************************************/ void bta_av_api_deregister(tBTA_AV_DATA *p_data) { tBTA_AV_SCB *p_scb = bta_av_hndl_to_scb(p_data->hdr.layer_specific); if(p_scb) { p_scb->deregistring = TRUE; bta_av_ssm_execute(p_scb, BTA_AV_API_CLOSE_EVT, p_data); } else { bta_av_dereg_comp(p_data); } } /******************************************************************************* ** ** Function bta_av_ci_data ** ** Description forward the BTA_AV_CI_SRC_DATA_READY_EVT to stream state machine ** ** ** Returns void ** *******************************************************************************/ static void bta_av_ci_data(tBTA_AV_DATA *p_data) { tBTA_AV_SCB *p_scb; int i; UINT8 chnl = (UINT8)p_data->hdr.layer_specific; for( i=0; i < BTA_AV_NUM_STRS; i++ ) { p_scb = bta_av_cb.p_scb[i]; if(p_scb && p_scb->chnl == chnl) { bta_av_ssm_execute(p_scb, BTA_AV_SRC_DATA_READY_EVT, p_data); } } } /******************************************************************************* ** ** Function bta_av_rpc_conn ** ** Description report report channel open ** ** Returns void ** *******************************************************************************/ #if (AVDT_REPORTING == TRUE) static void bta_av_rpc_conn(tBTA_AV_DATA *p_data) { } #endif /******************************************************************************* ** ** Function bta_av_api_to_ssm ** ** Description forward the API request to stream state machine ** ** ** Returns void ** *******************************************************************************/ static void bta_av_api_to_ssm(tBTA_AV_DATA *p_data) { int xx; UINT16 event = p_data->hdr.event - BTA_AV_FIRST_A2S_API_EVT + BTA_AV_FIRST_A2S_SSM_EVT; for(xx=0; xxchnl == BTA_AV_CHNL_AUDIO) { if ((bta_av_cb.audio_open_cnt >= 2) && ((0 == (p_scb->role & BTA_AV_ROLE_AD_ACP)) || /* Outgoing connection or */ (bta_av_cb.features & BTA_AV_FEAT_ACP_START))) /* auto-starting option */ { /* more than one audio channel is connected */ /* if this is the 2nd stream as ACP, give INT a chance to issue the START command */ for(i=0; ichnl == BTA_AV_CHNL_AUDIO && p_scbi->co_started) { start = TRUE; /* may need to update the flush timeout of this already started stream */ if(p_scbi->co_started != bta_av_cb.audio_open_cnt) { p_scbi->co_started = bta_av_cb.audio_open_cnt; L2CA_SetFlushTimeout(p_scbi->peer_addr, p_bta_av_cfg->p_audio_flush_to[p_scbi->co_started - 1] ); } } } } } return start; } /******************************************************************************* ** ** Function bta_av_restore_switch ** ** Description assume that the caller of this function already makes ** sure that there's only one ACL connection left ** ** Returns void ** *******************************************************************************/ void bta_av_restore_switch (void) { tBTA_AV_CB *p_cb = &bta_av_cb; int i; UINT8 mask; APPL_TRACE_DEBUG1("reg_audio: 0x%x",bta_av_cb.reg_audio); for(i=0; iconn_audio == mask) { if (p_cb->p_scb[i]) { bta_sys_set_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH, p_cb->p_scb[i]->peer_addr); } break; } } } /******************************************************************************* ** ** Function bta_av_sys_rs_cback ** ** Description Receives the role change event from dm ** ** Returns (BTA_SYS_ROLE_CHANGE, new_role, hci_status, p_bda) ** *******************************************************************************/ static void bta_av_sys_rs_cback (tBTA_SYS_CONN_STATUS status,UINT8 id, UINT8 app_id, BD_ADDR peer_addr) { int i; tBTA_AV_SCB *p_scb; tBTA_AV_ROLE_RES *p_buf; UINT8 cur_role; UINT8 peer_idx = 0; APPL_TRACE_DEBUG1("bta_av_sys_rs_cback: %d", bta_av_cb.rs_idx); for(i=0; ipeer_addr) == 0) && (p_buf = (tBTA_AV_ROLE_RES *) GKI_getbuf(sizeof(tBTA_AV_ROLE_RES))) != NULL) { APPL_TRACE_DEBUG3("new_role:%d, hci_status:x%x hndl: x%x", id, app_id, p_scb->hndl); /* if ((id != BTM_ROLE_MASTER) && (app_id != HCI_SUCCESS)) { bta_sys_set_policy(BTA_ID_AV, (HCI_ENABLE_MASTER_SLAVE_SWITCH|HCI_ENABLE_SNIFF_MODE), p_scb->peer_addr); } */ p_buf->hdr.event = BTA_AV_ROLE_CHANGE_EVT; p_buf->hdr.layer_specific = p_scb->hndl; p_buf->new_role = id; p_buf->hci_status = app_id; bta_sys_sendmsg(p_buf); peer_idx = p_scb->hdi + 1; /* Handle index for the peer_addr */ } } /* restore role switch policy, if role switch failed */ if ((HCI_SUCCESS != app_id) && (BTM_GetRole (peer_addr, &cur_role) == BTM_SUCCESS) && (cur_role == BTM_ROLE_SLAVE) ) { bta_sys_set_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH, peer_addr); } /* if BTA_AvOpen() was called for other device, which caused the role switch of the peer_addr, */ /* we need to continue opening process for the BTA_AvOpen(). */ if ((bta_av_cb.rs_idx != 0) && (bta_av_cb.rs_idx != peer_idx)) { p_scb = bta_av_cb.p_scb[bta_av_cb.rs_idx - 1]; if (p_scb && p_scb->q_tag == BTA_AV_Q_TAG_OPEN) { APPL_TRACE_DEBUG3 ("bta_av_sys_rs_cback: rs_idx(%d), hndl:x%x q_tag: %d", bta_av_cb.rs_idx, p_scb->hndl, p_scb->q_tag); if(HCI_SUCCESS == app_id || HCI_ERR_NO_CONNECTION == app_id) p_scb->q_info.open.switch_res = BTA_AV_RS_OK; else p_scb->q_info.open.switch_res = BTA_AV_RS_FAIL; /* Continue av open process */ bta_av_do_disc_a2d (p_scb, (tBTA_AV_DATA *)&(p_scb->q_info.open)); } bta_av_cb.rs_idx = 0; } } /******************************************************************************* ** ** Function bta_av_sco_chg_cback ** ** Description receive & process the SCO connection up/down event from sys. ** call setup also triggers this callback, to suspend av before sco ** activity happens, or to resume av once call ends. ** ** Returns void ** *******************************************************************************/ static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, UINT8 id, UINT8 app_id, BD_ADDR peer_addr) { tBTA_AV_SCB *p_scb; int i; tBTA_AV_API_STOP stop; APPL_TRACE_DEBUG2("bta_av_sco_chg_cback:%d status:%d", id, status); if(id) { bta_av_cb.sco_occupied = TRUE; /* either BTA_SYS_SCO_OPEN or BTA_SYS_SCO_CLOSE with remaining active SCO */ for(i=0; ico_started && (p_scb->sco_suspend == FALSE)) { APPL_TRACE_DEBUG1("suspending scb:%d", i); /* scb is used and started, not suspended automatically */ p_scb->sco_suspend = TRUE; stop.flush = FALSE; stop.suspend = TRUE; bta_av_ssm_execute(p_scb, BTA_AV_AP_STOP_EVT, (tBTA_AV_DATA *)&stop); } } } else { bta_av_cb.sco_occupied = FALSE; for(i=0; isco_suspend ) /* scb is used and suspended for SCO */ { APPL_TRACE_DEBUG1("starting scb:%d", i); bta_av_ssm_execute(p_scb, BTA_AV_AP_START_EVT, NULL); } } } } /******************************************************************************* ** ** Function bta_av_switch_if_needed ** ** Description This function checks if there is another existing AV ** channel that is local as slave role. ** If so, role switch and remove it from link policy. ** ** Returns TRUE, if role switch is done ** *******************************************************************************/ BOOLEAN bta_av_switch_if_needed(tBTA_AV_SCB *p_scb) { UINT8 role; BOOLEAN needed = FALSE; tBTA_AV_SCB *p_scbi; int i; UINT8 mask; for(i=0; ihdi != i) && /* not the original channel */ ((bta_av_cb.conn_audio & mask) ||/* connected audio */ (bta_av_cb.conn_video & mask)) ) /* connected video */ { BTM_GetRole(p_scbi->peer_addr, &role); /* this channel is open - clear the role switch link policy for this link */ if(BTM_ROLE_MASTER != role) { if (bta_av_cb.features & BTA_AV_FEAT_MASTER) bta_sys_clear_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH, p_scbi->peer_addr); if (BTM_CMD_STARTED != BTM_SwitchRole(p_scbi->peer_addr, BTM_ROLE_MASTER, NULL)) { /* can not switch role on SCBI * start the timer on SCB - because this function is ONLY called when SCB gets API_OPEN */ bta_sys_start_timer(&p_scb->timer, BTA_AV_AVRC_TIMER_EVT, BTA_AV_RS_TIME_VAL); } needed = TRUE; /* mark the original channel as waiting for RS result */ bta_av_cb.rs_idx = p_scb->hdi + 1; break; } } } return needed; } /******************************************************************************* ** ** Function bta_av_link_role_ok ** ** Description This function checks if the SCB has existing ACL connection ** If so, check if the link role fits the requirements. ** ** Returns TRUE, if role is ok ** *******************************************************************************/ BOOLEAN bta_av_link_role_ok(tBTA_AV_SCB *p_scb, UINT8 bits) { UINT8 role; BOOLEAN is_ok = TRUE; BOOLEAN need_timer = FALSE; if (BTM_GetRole(p_scb->peer_addr, &role) == BTM_SUCCESS) { APPL_TRACE_ERROR5("bta_av_link_role_ok hndl:x%x role:%d, conn_audio:x%x, bits:%d, features:x%x", p_scb->hndl, role, bta_av_cb.conn_audio, bits, bta_av_cb.features); if (BTM_ROLE_MASTER != role && (A2D_BitsSet(bta_av_cb.conn_audio) > bits || (bta_av_cb.features & BTA_AV_FEAT_MASTER))) { if (bta_av_cb.features & BTA_AV_FEAT_MASTER) bta_sys_clear_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH, p_scb->peer_addr); if (BTM_CMD_STARTED != BTM_SwitchRole(p_scb->peer_addr, BTM_ROLE_MASTER, NULL)) { /* can not switch role on SCB - start the timer on SCB */ need_timer = TRUE; } is_ok = FALSE; p_scb->wait |= BTA_AV_WAIT_ROLE_SW_RES_START; } } return is_ok; } /******************************************************************************* ** ** Function bta_av_chk_mtu ** ** Description if this is audio channel, check if more than one audio ** channel is connected. ** ** Returns The smallest mtu of the connected audio channels ** *******************************************************************************/ UINT16 bta_av_chk_mtu(tBTA_AV_SCB *p_scb, UINT16 mtu) { UINT16 ret_mtu = BTA_AV_MAX_A2DP_MTU; tBTA_AV_SCB *p_scbi; int i; UINT8 mask; /* TODO_MV mess with the mtu according to the number of EDR/non-EDR headsets */ if(p_scb->chnl == BTA_AV_CHNL_AUDIO) { if(bta_av_cb.audio_open_cnt >= 2) { /* more than one audio channel is connected */ for(i=0; ichnl == BTA_AV_CHNL_AUDIO) ) { mask = BTA_AV_HNDL_TO_MSK(i); APPL_TRACE_DEBUG3("[%d] mtu: %d, mask:0x%x", i, p_scbi->stream_mtu, mask); if(bta_av_cb.conn_audio & mask) { if(ret_mtu > p_scbi->stream_mtu) ret_mtu = p_scbi->stream_mtu; } } } } APPL_TRACE_DEBUG3("bta_av_chk_mtu audio count:%d, conn_audio:0x%x, ret:%d", bta_av_cb.audio_open_cnt, bta_av_cb.conn_audio, ret_mtu); } return ret_mtu; } /******************************************************************************* ** ** Function bta_av_dup_audio_buf ** ** Description dup the audio data to the q_info.a2d of other audio channels ** ** Returns void ** *******************************************************************************/ void bta_av_dup_audio_buf(tBTA_AV_SCB *p_scb, BT_HDR *p_buf) { tBTA_AV_SCB *p_scbi; BUFFER_Q *pq; int i; UINT16 size, copy_size; BT_HDR *p_new; if(!p_buf) return; if(bta_av_cb.audio_open_cnt >= 2) { size = GKI_get_buf_size(p_buf); copy_size = BT_HDR_SIZE + p_buf->len + p_buf->offset; /* more than one audio channel is connected */ for(i=0; ihdi != i) && /* not the original channel */ (bta_av_cb.conn_audio & BTA_AV_HNDL_TO_MSK(i)) && /* connected audio */ p_scbi && p_scbi->co_started ) /* scb is used and started */ { /* enqueue the data only when the stream is started */ p_new = (BT_HDR *)GKI_getbuf(size); if(p_new) { memcpy(p_new, p_buf, copy_size); pq = &p_scbi->q_info.a2d; GKI_enqueue(pq, p_new); if(pq->count > p_bta_av_cfg->audio_mqs) { bta_av_co_audio_drop(p_scbi->hndl); GKI_freebuf(GKI_dequeue(pq)); } } } } } } /******************************************************************************* ** ** Function bta_av_sm_execute ** ** Description State machine event handling function for AV ** ** ** Returns void ** *******************************************************************************/ void bta_av_sm_execute(tBTA_AV_CB *p_cb, UINT16 event, tBTA_AV_DATA *p_data) { tBTA_AV_ST_TBL state_table; UINT8 action; #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE) APPL_TRACE_EVENT4("AV event=0x%x(%s) state=%d(%s)", event, bta_av_evt_code(event), p_cb->state, bta_av_st_code(p_cb->state)); #else APPL_TRACE_EVENT2("AV event=0x%x state=%d", event, p_cb->state); #endif /* look up the state table for the current state */ state_table = bta_av_st_tbl[p_cb->state]; event &= 0x00FF; /* set next state */ p_cb->state = state_table[event][BTA_AV_NEXT_STATE]; APPL_TRACE_EVENT1("next state=%d", p_cb->state); /* execute action functions */ if ((action = state_table[event][BTA_AV_ACTION_COL]) != BTA_AV_IGNORE) { (*bta_av_action[action])(p_cb, p_data); } } /******************************************************************************* ** ** Function bta_av_hdl_event ** ** Description Advanced audio/video main event handling function. ** ** ** Returns BOOLEAN ** *******************************************************************************/ BOOLEAN bta_av_hdl_event(BT_HDR *p_msg) { UINT16 event = p_msg->event; UINT16 first_event = BTA_AV_FIRST_NSM_EVT; if (event > BTA_AV_LAST_EVT) { return TRUE; /* to free p_msg */ } if(event >= first_event) { #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE) APPL_TRACE_EVENT2("AV nsm event=0x%x(%s)", event, bta_av_evt_code(event)); #else APPL_TRACE_EVENT1("AV nsm event=0x%x", event); #endif /* non state machine events */ (*bta_av_nsm_act[event - BTA_AV_FIRST_NSM_EVT]) ((tBTA_AV_DATA *) p_msg); } else if (event >= BTA_AV_FIRST_SM_EVT && event <= BTA_AV_LAST_SM_EVT) { #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE) APPL_TRACE_EVENT2("AV sm event=0x%x(%s)", event, bta_av_evt_code(event)); #else APPL_TRACE_EVENT1("AV sm event=0x%x", event); #endif /* state machine events */ bta_av_sm_execute(&bta_av_cb, p_msg->event, (tBTA_AV_DATA *) p_msg); } else { APPL_TRACE_EVENT1("handle=0x%x", p_msg->layer_specific); /* stream state machine events */ bta_av_ssm_execute( bta_av_hndl_to_scb(p_msg->layer_specific), p_msg->event, (tBTA_AV_DATA *) p_msg); } return TRUE; } /***************************************************************************** ** Debug Functions *****************************************************************************/ #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE) /******************************************************************************* ** ** Function bta_av_st_code ** ** Description ** ** Returns char * ** *******************************************************************************/ static char *bta_av_st_code(UINT8 state) { switch(state) { case BTA_AV_INIT_ST: return "INIT"; case BTA_AV_OPEN_ST: return "OPEN"; default: return "unknown"; } } /******************************************************************************* ** ** Function bta_av_evt_code ** ** Description ** ** Returns char * ** *******************************************************************************/ char *bta_av_evt_code(UINT16 evt_code) { switch(evt_code) { case BTA_AV_API_DISABLE_EVT: return "API_DISABLE"; case BTA_AV_API_REMOTE_CMD_EVT: return "API_REMOTE_CMD"; case BTA_AV_API_VENDOR_CMD_EVT: return "API_VENDOR_CMD"; case BTA_AV_API_VENDOR_RSP_EVT: return "API_VENDOR_RSP"; case BTA_AV_API_META_RSP_EVT: return "API_META_RSP_EVT"; case BTA_AV_API_RC_CLOSE_EVT: return "API_RC_CLOSE"; case BTA_AV_AVRC_OPEN_EVT: return "AVRC_OPEN"; case BTA_AV_AVRC_MSG_EVT: return "AVRC_MSG"; case BTA_AV_AVRC_NONE_EVT: return "AVRC_NONE"; case BTA_AV_API_OPEN_EVT: return "API_OPEN"; case BTA_AV_API_CLOSE_EVT: return "API_CLOSE"; case BTA_AV_AP_START_EVT: return "AP_START"; case BTA_AV_AP_STOP_EVT: return "AP_STOP"; case BTA_AV_API_RECONFIG_EVT: return "API_RECONFIG"; case BTA_AV_API_PROTECT_REQ_EVT: return "API_PROTECT_REQ"; case BTA_AV_API_PROTECT_RSP_EVT: return "API_PROTECT_RSP"; case BTA_AV_API_RC_OPEN_EVT: return "API_RC_OPEN"; case BTA_AV_SRC_DATA_READY_EVT: return "SRC_DATA_READY"; case BTA_AV_CI_SETCONFIG_OK_EVT: return "CI_SETCONFIG_OK"; case BTA_AV_CI_SETCONFIG_FAIL_EVT: return "CI_SETCONFIG_FAIL"; case BTA_AV_SDP_DISC_OK_EVT: return "SDP_DISC_OK"; case BTA_AV_SDP_DISC_FAIL_EVT: return "SDP_DISC_FAIL"; case BTA_AV_STR_DISC_OK_EVT: return "STR_DISC_OK"; case BTA_AV_STR_DISC_FAIL_EVT: return "STR_DISC_FAIL"; case BTA_AV_STR_GETCAP_OK_EVT: return "STR_GETCAP_OK"; case BTA_AV_STR_GETCAP_FAIL_EVT: return "STR_GETCAP_FAIL"; case BTA_AV_STR_OPEN_OK_EVT: return "STR_OPEN_OK"; case BTA_AV_STR_OPEN_FAIL_EVT: return "STR_OPEN_FAIL"; case BTA_AV_STR_START_OK_EVT: return "STR_START_OK"; case BTA_AV_STR_START_FAIL_EVT: return "STR_START_FAIL"; case BTA_AV_STR_CLOSE_EVT: return "STR_CLOSE"; case BTA_AV_STR_CONFIG_IND_EVT: return "STR_CONFIG_IND"; case BTA_AV_STR_SECURITY_IND_EVT: return "STR_SECURITY_IND"; case BTA_AV_STR_SECURITY_CFM_EVT: return "STR_SECURITY_CFM"; case BTA_AV_STR_WRITE_CFM_EVT: return "STR_WRITE_CFM"; case BTA_AV_STR_SUSPEND_CFM_EVT: return "STR_SUSPEND_CFM"; case BTA_AV_STR_RECONFIG_CFM_EVT: return "STR_RECONFIG_CFM"; case BTA_AV_AVRC_TIMER_EVT: return "AVRC_TIMER"; case BTA_AV_AVDT_CONNECT_EVT: return "AVDT_CONNECT"; case BTA_AV_AVDT_DISCONNECT_EVT: return "AVDT_DISCONNECT"; case BTA_AV_ROLE_CHANGE_EVT: return "ROLE_CHANGE"; case BTA_AV_AVDT_DELAY_RPT_EVT: return "AVDT_DELAY_RPT"; case BTA_AV_ACP_CONNECT_EVT: return "ACP_CONNECT"; case BTA_AV_API_ENABLE_EVT: return "API_ENABLE"; case BTA_AV_API_REGISTER_EVT: return "API_REG"; case BTA_AV_API_DEREGISTER_EVT: return "API_DEREG"; case BTA_AV_API_DISCONNECT_EVT: return "API_DISCNT"; case BTA_AV_CI_SRC_DATA_READY_EVT: return "CI_DATA_READY"; case BTA_AV_SIG_CHG_EVT: return "SIG_CHG"; case BTA_AV_SIG_TIMER_EVT: return "SIG_TMR"; case BTA_AV_SDP_AVRC_DISC_EVT: return "SDP_AVRC_DISC"; case BTA_AV_AVRC_CLOSE_EVT: return "AVRC_CLOSE"; case BTA_AV_CONN_CHG_EVT: return "CONN_CHG"; case BTA_AV_DEREG_COMP_EVT: return "DEREG_COMP"; #if (AVDT_REPORTING == TRUE) case BTA_AV_AVDT_RPT_CONN_EVT: return "RPT_CONN"; #endif case BTA_AV_API_START_EVT: return "API_START"; case BTA_AV_API_STOP_EVT: return "API_STOP"; default: return "unknown"; } } #endif #endif /* BTA_AV_INCLUDED */