1 /******************************************************************************
3 * Copyright 2004-2012 Broadcom Corporation
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 ******************************************************************************/
19 /******************************************************************************
21 * This is the main implementation file for the BTA advanced audio/video.
23 ******************************************************************************/
25 #define LOG_TAG "bt_bta_av"
29 #include "bt_target.h" // Must be first to define build configuration
31 #include "bta/av/bta_av_int.h"
32 #include "bta/include/bta_ar_api.h"
33 #include "bta/include/utl.h"
34 #include "btif/avrcp/avrcp_service.h"
35 #include "btif/include/btif_av_co.h"
36 #include "btif/include/btif_config.h"
37 #include "main/shim/dumpsys.h"
38 #include "osi/include/log.h"
39 #include "osi/include/osi.h" // UNUSED_ATTR
40 #include "osi/include/properties.h"
41 #include "stack/include/acl_api.h"
42 #include "types/hci_role.h"
44 /*****************************************************************************
46 ****************************************************************************/
48 #ifndef BTA_AV_RET_TOUT
49 #define BTA_AV_RET_TOUT 4
52 #ifndef BTA_AV_SIG_TOUT
53 #define BTA_AV_SIG_TOUT 4
56 #ifndef BTA_AV_IDLE_TOUT
57 #define BTA_AV_IDLE_TOUT 10
60 /* the delay time in milliseconds to retry role switch */
61 #ifndef BTA_AV_RS_TIME_VAL
62 #define BTA_AV_RS_TIME_VAL 1000
65 #ifndef AVRCP_VERSION_PROPERTY
66 #define AVRCP_VERSION_PROPERTY "persist.bluetooth.avrcpversion"
69 #ifndef AVRCP_1_6_STRING
70 #define AVRCP_1_6_STRING "avrcp16"
73 #ifndef AVRCP_1_5_STRING
74 #define AVRCP_1_5_STRING "avrcp15"
77 #ifndef AVRCP_1_4_STRING
78 #define AVRCP_1_4_STRING "avrcp14"
81 #ifndef AVRCP_1_3_STRING
82 #define AVRCP_1_3_STRING "avrcp13"
85 #ifndef AVRCP_DEFAULT_VERSION
86 #define AVRCP_DEFAULT_VERSION AVRCP_1_5_STRING
89 /* state machine states */
90 enum { BTA_AV_INIT_ST, BTA_AV_OPEN_ST };
92 typedef void (*tBTA_AV_NSM_ACT)(tBTA_AV_DATA* p_data);
93 static void bta_av_api_enable(tBTA_AV_DATA* p_data);
94 static void bta_av_api_register(tBTA_AV_DATA* p_data);
95 static void bta_av_ci_data(tBTA_AV_DATA* p_data);
96 static void bta_av_rpc_conn(tBTA_AV_DATA* p_data);
97 static void bta_av_api_to_ssm(tBTA_AV_DATA* p_data);
99 static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, uint8_t id,
100 uint8_t app_id, const RawAddress& peer_addr);
101 static void bta_av_sys_rs_cback(tBTA_SYS_CONN_STATUS status, uint8_t id,
102 uint8_t app_id, const RawAddress& peer_addr);
104 /*****************************************************************************
106 ****************************************************************************/
108 /* AV control block */
109 tBTA_AV_CB bta_av_cb = {};
111 static const char* bta_av_st_code(uint8_t state);
113 /*******************************************************************************
115 * Function bta_av_api_enable
117 * Description Handle an API enable event.
122 ******************************************************************************/
123 static void bta_av_api_enable(tBTA_AV_DATA* p_data) {
124 if (bta_av_cb.disabling) {
126 "%s: previous (reg_audio=%#x) is still disabling (attempts=%d)",
127 __func__, bta_av_cb.reg_audio, bta_av_cb.enabling_attempts);
128 if (++bta_av_cb.enabling_attempts <= kEnablingAttemptsCountMaximum) {
129 tBTA_AV_API_ENABLE* p_buf =
130 (tBTA_AV_API_ENABLE*)osi_malloc(sizeof(tBTA_AV_API_ENABLE));
131 memcpy(p_buf, &p_data->api_enable, sizeof(tBTA_AV_API_ENABLE));
132 bta_sys_sendmsg_delayed(p_buf, base::TimeDelta::FromMilliseconds(
133 kEnablingAttemptsIntervalMs));
136 if (bta_av_cb.sdp_a2dp_handle) {
137 SDP_DeleteRecord(bta_av_cb.sdp_a2dp_handle);
138 bta_sys_remove_uuid(UUID_SERVCLASS_AUDIO_SOURCE);
140 #if (BTA_AV_SINK_INCLUDED == TRUE)
141 if (bta_av_cb.sdp_a2dp_snk_handle) {
142 SDP_DeleteRecord(bta_av_cb.sdp_a2dp_snk_handle);
143 bta_sys_remove_uuid(UUID_SERVCLASS_AUDIO_SINK);
146 // deregister from AVDT
149 // deregister from AVCT
150 bta_ar_dereg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL);
151 bta_ar_dereg_avrc(UUID_SERVCLASS_AV_REM_CTRL_TARGET);
155 /* initialize control block */
156 memset(&bta_av_cb, 0, sizeof(tBTA_AV_CB));
158 for (int i = 0; i < BTA_AV_NUM_RCB; i++)
159 bta_av_cb.rcb[i].handle = BTA_AV_RC_HANDLE_NONE;
161 bta_av_cb.rc_acp_handle = BTA_AV_RC_HANDLE_NONE;
164 * TODO: The "disable" event handling is missing - there we need
165 * to alarm_free() the alarms below.
167 bta_av_cb.link_signalling_timer = alarm_new("bta_av.link_signalling_timer");
168 bta_av_cb.accept_signalling_timer =
169 alarm_new("bta_av.accept_signalling_timer");
171 /* store parameters */
172 bta_av_cb.p_cback = p_data->api_enable.p_cback;
173 bta_av_cb.features = p_data->api_enable.features;
175 tBTA_AV_ENABLE enable;
176 enable.features = bta_av_cb.features;
178 /* Register for SCO change event */
179 bta_sys_sco_register(bta_av_sco_chg_cback);
181 /* call callback with enable event */
183 bta_av_data.enable = enable;
184 (*bta_av_cb.p_cback)(BTA_AV_ENABLE_EVT, &bta_av_data);
187 /*******************************************************************************
189 * Function bta_av_addr_to_scb
191 * Description find the stream control block by the peer addr
195 ******************************************************************************/
196 tBTA_AV_SCB* bta_av_addr_to_scb(const RawAddress& bd_addr) {
197 tBTA_AV_SCB* p_scb = NULL;
200 for (xx = 0; xx < BTA_AV_NUM_STRS; xx++) {
201 if (bta_av_cb.p_scb[xx]) {
202 if (bd_addr == bta_av_cb.p_scb[xx]->PeerAddress()) {
203 p_scb = bta_av_cb.p_scb[xx];
211 int BTA_AvObtainPeerChannelIndex(const RawAddress& peer_address) {
212 // Find the entry for the peer (if exists)
213 tBTA_AV_SCB* p_scb = bta_av_addr_to_scb(peer_address);
214 if (p_scb != nullptr) {
218 // Find the index for an entry that is not used
219 for (int index = 0; index < BTA_AV_NUM_STRS; index++) {
220 tBTA_AV_SCB* p_scb = bta_av_cb.p_scb[index];
221 if (p_scb == nullptr) {
224 if (p_scb->PeerAddress().IsEmpty()) {
232 /*******************************************************************************
234 * Function bta_av_hndl_to_scb
236 * Description find the stream control block by the handle
240 ******************************************************************************/
241 tBTA_AV_SCB* bta_av_hndl_to_scb(uint16_t handle) {
242 tBTA_AV_HNDL hndl = (tBTA_AV_HNDL)handle;
243 tBTA_AV_SCB* p_scb = NULL;
244 uint8_t idx = (hndl & BTA_AV_HNDL_MSK);
246 if (idx && (idx <= BTA_AV_NUM_STRS)) {
247 p_scb = bta_av_cb.p_scb[idx - 1];
252 /*******************************************************************************
254 * Function bta_av_alloc_scb
256 * Description allocate stream control block,
257 * register the service to stack
262 ******************************************************************************/
263 static tBTA_AV_SCB* bta_av_alloc_scb(tBTA_AV_CHNL chnl) {
264 if (chnl != BTA_AV_CHNL_AUDIO) {
265 APPL_TRACE_ERROR("%s: bad channel: %d", __func__, chnl);
269 for (int xx = 0; xx < BTA_AV_NUM_STRS; xx++) {
270 if (bta_av_cb.p_scb[xx] != nullptr) continue;
271 // Found an empty spot
272 // TODO: After tBTA_AV_SCB is changed to a proper class, the entry
273 // here should be allocated by C++ 'new' statement.
274 tBTA_AV_SCB* p_ret = (tBTA_AV_SCB*)osi_calloc(sizeof(tBTA_AV_SCB));
275 p_ret->rc_handle = BTA_AV_RC_HANDLE_NONE;
277 p_ret->hndl = (tBTA_AV_HNDL)((xx + 1) | chnl);
279 p_ret->a2dp_list = list_new(nullptr);
280 p_ret->avrc_ct_timer = alarm_new("bta_av.avrc_ct_timer");
281 bta_av_cb.p_scb[xx] = p_ret;
288 void bta_av_free_scb(tBTA_AV_SCB* p_scb) {
289 if (p_scb == nullptr) return;
290 uint8_t scb_index = p_scb->hdi;
291 CHECK(scb_index < BTA_AV_NUM_STRS);
293 CHECK(p_scb == bta_av_cb.p_scb[scb_index]);
294 bta_av_cb.p_scb[scb_index] = nullptr;
295 alarm_free(p_scb->avrc_ct_timer);
296 // TODO: After tBTA_AV_SCB is changed to a proper class, the entry
297 // here should be de-allocated by C++ 'delete' statement.
301 void tBTA_AV_SCB::OnConnected(const RawAddress& peer_address) {
302 peer_address_ = peer_address;
304 if (peer_address.IsEmpty()) {
305 LOG_ERROR("%s: Invalid peer address: %s", __func__,
306 peer_address.ToString().c_str());
310 // Read and restore the AVDTP version from local storage
311 uint16_t avdtp_version = 0;
312 size_t version_value_size = sizeof(avdtp_version);
313 if (!btif_config_get_bin(peer_address_.ToString(), AVDTP_VERSION_CONFIG_KEY,
314 (uint8_t*)&avdtp_version, &version_value_size)) {
315 LOG_WARN("%s: Failed to read cached peer AVDTP version for %s", __func__,
316 peer_address_.ToString().c_str());
318 SetAvdtpVersion(avdtp_version);
322 void tBTA_AV_SCB::OnDisconnected() {
323 peer_address_ = RawAddress::kEmpty;
327 void tBTA_AV_SCB::SetAvdtpVersion(uint16_t avdtp_version) {
328 avdtp_version_ = avdtp_version;
329 LOG_INFO("%s: AVDTP version for %s set to 0x%x", __func__,
330 peer_address_.ToString().c_str(), avdtp_version_);
333 /*******************************************************************************
334 ******************************************************************************/
335 void bta_av_conn_cback(UNUSED_ATTR uint8_t handle, const RawAddress& bd_addr,
336 uint8_t event, tAVDT_CTRL* p_data, uint8_t scb_index) {
338 tBTA_AV_SCB* p_scb = NULL;
340 if (event == BTA_AR_AVDT_CONN_EVT || event == AVDT_CONNECT_IND_EVT ||
341 event == AVDT_DISCONNECT_IND_EVT)
343 evt = BTA_AV_SIG_CHG_EVT;
344 if (event == AVDT_DISCONNECT_IND_EVT) {
345 p_scb = bta_av_addr_to_scb(bd_addr);
346 } else if (event == AVDT_CONNECT_IND_EVT) {
347 APPL_TRACE_DEBUG("%s: CONN_IND is ACP:%d", __func__,
348 p_data->hdr.err_param);
351 tBTA_AV_STR_MSG* p_msg =
352 (tBTA_AV_STR_MSG*)osi_malloc(sizeof(tBTA_AV_STR_MSG));
353 p_msg->hdr.event = evt;
354 p_msg->hdr.layer_specific = event;
355 p_msg->hdr.offset = p_data->hdr.err_param;
356 p_msg->bd_addr = bd_addr;
357 p_msg->scb_index = scb_index;
359 APPL_TRACE_DEBUG("%s: bta_handle x%x, role x%x", __func__, p_scb->hndl,
362 LOG_INFO("%s: conn_cback bd_addr: %s", __func__,
363 bd_addr.ToString().c_str());
364 bta_sys_sendmsg(p_msg);
368 /*******************************************************************************
370 * Function bta_av_a2dp_report_cback
372 * Description A2DP report callback.
376 ******************************************************************************/
377 static void bta_av_a2dp_report_cback(UNUSED_ATTR uint8_t handle,
378 UNUSED_ATTR AVDT_REPORT_TYPE type,
379 UNUSED_ATTR tAVDT_REPORT_DATA* p_data) {
380 /* Do not need to handle report data for now.
381 * This empty function is here for conformance reasons. */
384 /*******************************************************************************
386 * Function bta_av_api_register
388 * Description allocate stream control block,
389 * register the service to stack
394 ******************************************************************************/
395 static void bta_av_api_register(tBTA_AV_DATA* p_data) {
396 tBTA_AV_REGISTER registr;
397 tBTA_AV_SCB* p_scb; /* stream control block */
399 AvdtpStreamConfig avdtp_stream_config;
400 char* p_service_name;
403 if (bta_av_cb.disabling || (bta_av_cb.features == 0)) {
405 "%s: AV instance (features=%#x, reg_audio=%#x) is not "
406 "ready for app_id %d",
407 __func__, bta_av_cb.features, bta_av_cb.reg_audio,
408 p_data->api_reg.app_id);
409 tBTA_AV_API_REG* p_buf =
410 (tBTA_AV_API_REG*)osi_malloc(sizeof(tBTA_AV_API_REG));
411 memcpy(p_buf, &p_data->api_reg, sizeof(tBTA_AV_API_REG));
412 bta_sys_sendmsg_delayed(
413 p_buf, base::TimeDelta::FromMilliseconds(kEnablingAttemptsIntervalMs));
417 avdtp_stream_config.Reset();
419 registr.status = BTA_AV_FAIL_RESOURCES;
420 registr.app_id = p_data->api_reg.app_id;
421 registr.chnl = (tBTA_AV_CHNL)p_data->hdr.layer_specific;
423 char avrcp_version[PROPERTY_VALUE_MAX] = {0};
424 osi_property_get(AVRCP_VERSION_PROPERTY, avrcp_version,
425 AVRCP_DEFAULT_VERSION);
426 LOG_INFO("%s: AVRCP version used for sdp: \"%s\"", __func__, avrcp_version);
428 uint16_t profile_initialized = p_data->api_reg.service_uuid;
429 if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
430 p_bta_av_cfg = &bta_avk_cfg;
431 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
432 p_bta_av_cfg = &bta_av_cfg;
434 if (!strncmp(AVRCP_1_3_STRING, avrcp_version, sizeof(AVRCP_1_3_STRING))) {
435 LOG_INFO("%s: AVRCP 1.3 capabilites used", __func__);
436 p_bta_av_cfg = &bta_av_cfg_compatibility;
440 APPL_TRACE_DEBUG("%s: profile: 0x%x", __func__, profile_initialized);
441 if (p_bta_av_cfg == NULL) {
442 APPL_TRACE_ERROR("%s: AV configuration is null!", __func__);
447 p_scb = bta_av_alloc_scb(registr.chnl);
449 APPL_TRACE_ERROR("%s: failed to alloc SCB", __func__);
453 registr.hndl = p_scb->hndl;
454 p_scb->app_id = registr.app_id;
456 /* initialize the stream control block */
457 registr.status = BTA_AV_SUCCESS;
459 if (bta_av_cb.reg_audio == 0) {
460 /* the first channel registered. register to AVDTP */
462 reg.ret_tout = BTA_AV_RET_TOUT;
463 reg.sig_tout = BTA_AV_SIG_TOUT;
464 reg.idle_tout = BTA_AV_IDLE_TOUT;
465 reg.scb_index = p_scb->hdi;
466 bta_ar_reg_avdt(®, bta_av_conn_cback);
467 bta_sys_role_chg_register(&bta_av_sys_rs_cback);
469 /* create remote control TG service if required */
470 if (bta_av_cb.features & (BTA_AV_FEAT_RCTG)) {
471 /* register with no authorization; let AVDTP use authorization instead
475 /* For the Audio Sink role we support additional TG to support
478 if (is_new_avrcp_enabled()) {
479 APPL_TRACE_DEBUG("%s: newavrcp is the owner of the AVRCP Target SDP "
480 "record. Don't create the SDP record", __func__);
482 APPL_TRACE_DEBUG("%s: newavrcp is not enabled. Create SDP record",
485 uint16_t profile_version = AVRC_REV_1_0;
486 if (!strncmp(AVRCP_1_6_STRING, avrcp_version,
487 sizeof(AVRCP_1_6_STRING))) {
488 profile_version = AVRC_REV_1_6;
489 } else if (!strncmp(AVRCP_1_5_STRING, avrcp_version,
490 sizeof(AVRCP_1_5_STRING))) {
491 profile_version = AVRC_REV_1_5;
492 } else if (!strncmp(AVRCP_1_3_STRING, avrcp_version,
493 sizeof(AVRCP_1_3_STRING))) {
494 profile_version = AVRC_REV_1_3;
496 profile_version = AVRC_REV_1_4;
500 UUID_SERVCLASS_AV_REM_CTRL_TARGET, "AV Remote Control Target", NULL,
501 p_bta_av_cfg->avrc_tg_cat,
502 (bta_av_cb.features & BTA_AV_FEAT_BROWSE), profile_version);
506 /* Set the Capturing service class bit */
507 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE)
508 cod.service = BTM_COD_SERVICE_CAPTURING;
509 else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK)
510 cod.service = BTM_COD_SERVICE_RENDERING;
511 utl_set_device_class(&cod, BTA_UTL_SET_COD_SERVICE_CLASS);
512 } /* if 1st channel */
514 /* get stream configuration and create stream */
515 avdtp_stream_config.cfg.num_codec = 1;
516 avdtp_stream_config.nsc_mask = AvdtpStreamConfig::AVDT_NSC_RECONFIG;
517 if (!(bta_av_cb.features & BTA_AV_FEAT_PROTECT)) {
518 avdtp_stream_config.nsc_mask |= AvdtpStreamConfig::AVDT_NSC_SECURITY;
520 APPL_TRACE_DEBUG("%s: nsc_mask: 0x%x", __func__,
521 avdtp_stream_config.nsc_mask);
523 if (p_data->api_reg.p_service_name[0] == 0) {
524 p_service_name = NULL;
526 p_service_name = p_data->api_reg.p_service_name;
529 p_scb->suspend_sup = true;
530 p_scb->recfg_sup = true;
532 avdtp_stream_config.scb_index = p_scb->hdi;
533 avdtp_stream_config.p_avdt_ctrl_cback = &bta_av_proc_stream_evt;
535 /* set up the audio stream control block */
536 p_scb->p_cos = &bta_av_a2dp_cos;
537 p_scb->media_type = AVDT_MEDIA_TYPE_AUDIO;
538 avdtp_stream_config.cfg.psc_mask = AVDT_PSC_TRANS;
539 avdtp_stream_config.media_type = AVDT_MEDIA_TYPE_AUDIO;
540 avdtp_stream_config.mtu = MAX_3MBPS_AVDTP_MTU;
541 btav_a2dp_codec_index_t codec_index_min = BTAV_A2DP_CODEC_INDEX_SOURCE_MIN;
542 btav_a2dp_codec_index_t codec_index_max = BTAV_A2DP_CODEC_INDEX_SOURCE_MAX;
544 if (bta_av_cb.features & BTA_AV_FEAT_REPORT) {
545 avdtp_stream_config.cfg.psc_mask |= AVDT_PSC_REPORT;
546 avdtp_stream_config.p_report_cback = bta_av_a2dp_report_cback;
548 if (bta_av_cb.features & BTA_AV_FEAT_DELAY_RPT)
549 avdtp_stream_config.cfg.psc_mask |= AVDT_PSC_DELAY_RPT;
551 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
552 avdtp_stream_config.tsep = AVDT_TSEP_SRC;
553 codec_index_min = BTAV_A2DP_CODEC_INDEX_SOURCE_MIN;
554 codec_index_max = BTAV_A2DP_CODEC_INDEX_SOURCE_MAX;
555 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
556 avdtp_stream_config.tsep = AVDT_TSEP_SNK;
557 avdtp_stream_config.p_sink_data_cback = bta_av_sink_data_cback;
558 codec_index_min = BTAV_A2DP_CODEC_INDEX_SINK_MIN;
559 codec_index_max = BTAV_A2DP_CODEC_INDEX_SINK_MAX;
562 /* Initialize handles to zero */
563 for (int xx = 0; xx < BTAV_A2DP_CODEC_INDEX_MAX; xx++) {
564 p_scb->seps[xx].av_handle = 0;
567 /* keep the configuration in the stream control block */
568 p_scb->cfg = avdtp_stream_config.cfg;
569 for (int i = codec_index_min; i < codec_index_max; i++) {
570 btav_a2dp_codec_index_t codec_index =
571 static_cast<btav_a2dp_codec_index_t>(i);
572 if (!bta_av_co_is_supported_codec(codec_index)) {
575 if (!(*bta_av_a2dp_cos.init)(codec_index, &avdtp_stream_config.cfg)) {
578 if (AVDT_CreateStream(p_scb->app_id, &p_scb->seps[codec_index].av_handle,
579 avdtp_stream_config) != AVDT_SUCCESS) {
581 "%s: bta_handle=0x%x (app_id %d) failed to alloc an SEP index:%d",
582 __func__, p_scb->hndl, p_scb->app_id, codec_index);
585 /* Save a copy of the codec */
586 memcpy(p_scb->seps[codec_index].codec_info,
587 avdtp_stream_config.cfg.codec_info, AVDT_CODEC_SIZE);
588 p_scb->seps[codec_index].tsep = avdtp_stream_config.tsep;
589 if (avdtp_stream_config.tsep == AVDT_TSEP_SNK) {
590 p_scb->seps[codec_index].p_app_sink_data_cback =
591 p_data->api_reg.p_app_sink_data_cback;
593 /* In case of A2DP SOURCE we don't need a callback to
594 * handle media packets.
596 p_scb->seps[codec_index].p_app_sink_data_cback = NULL;
600 if (!bta_av_cb.reg_audio) {
601 bta_av_cb.sdp_a2dp_handle = 0;
602 bta_av_cb.sdp_a2dp_snk_handle = 0;
603 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
604 /* create the SDP records on the 1st audio channel */
605 bta_av_cb.sdp_a2dp_handle = SDP_CreateRecord();
606 A2DP_AddRecord(UUID_SERVCLASS_AUDIO_SOURCE, p_service_name, NULL,
607 A2DP_SUPF_PLAYER, bta_av_cb.sdp_a2dp_handle);
608 bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SOURCE);
609 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
610 #if (BTA_AV_SINK_INCLUDED == TRUE)
611 bta_av_cb.sdp_a2dp_snk_handle = SDP_CreateRecord();
612 A2DP_AddRecord(UUID_SERVCLASS_AUDIO_SINK, p_service_name, NULL,
613 A2DP_SUPF_PLAYER, bta_av_cb.sdp_a2dp_snk_handle);
614 bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SINK);
617 /* start listening when A2DP is registered */
618 if (bta_av_cb.features & BTA_AV_FEAT_RCTG)
619 bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1);
621 /* if the AV and AVK are both supported, it cannot support the CT role
623 if (bta_av_cb.features & (BTA_AV_FEAT_RCCT)) {
624 /* if TG is not supported, we need to register to AVCT now */
625 if ((bta_av_cb.features & (BTA_AV_FEAT_RCTG)) == 0) {
627 bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1);
629 /* create an SDP record as AVRC CT. We create 1.3 for SOURCE
630 * because we rely on feature bits being scanned by external
631 * devices more than the profile version itself.
633 * We create 1.4 for SINK since we support browsing.
635 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
636 bta_ar_reg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, NULL, NULL,
637 p_bta_av_cfg->avrc_ct_cat,
638 (bta_av_cb.features & BTA_AV_FEAT_BROWSE),
640 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
641 bta_ar_reg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, NULL, NULL,
642 p_bta_av_cfg->avrc_ct_cat,
643 (bta_av_cb.features & BTA_AV_FEAT_BROWSE),
648 bta_av_cb.reg_audio |= BTA_AV_HNDL_TO_MSK(p_scb->hdi);
649 APPL_TRACE_DEBUG("%s: reg_audio: 0x%x", __func__, bta_av_cb.reg_audio);
652 /* call callback with register event */
654 bta_av_data.registr = registr;
655 (*bta_av_cb.p_cback)(BTA_AV_REGISTER_EVT, &bta_av_data);
658 /*******************************************************************************
660 * Function bta_av_api_deregister
662 * Description de-register a channel
667 ******************************************************************************/
668 void bta_av_api_deregister(tBTA_AV_DATA* p_data) {
669 tBTA_AV_SCB* p_scb = bta_av_hndl_to_scb(p_data->hdr.layer_specific);
672 p_scb->deregistering = true;
673 bta_av_ssm_execute(p_scb, BTA_AV_API_CLOSE_EVT, p_data);
675 bta_av_dereg_comp(p_data);
679 /*******************************************************************************
681 * Function bta_av_ci_data
683 * Description Forward the BTA_AV_CI_SRC_DATA_READY_EVT to stream state
689 ******************************************************************************/
690 static void bta_av_ci_data(tBTA_AV_DATA* p_data) {
693 uint8_t chnl = (uint8_t)p_data->hdr.layer_specific;
695 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
696 p_scb = bta_av_cb.p_scb[i];
698 if (p_scb && p_scb->chnl == chnl) {
699 bta_av_ssm_execute(p_scb, BTA_AV_SRC_DATA_READY_EVT, p_data);
704 /*******************************************************************************
706 * Function bta_av_rpc_conn
708 * Description report report channel open
712 ******************************************************************************/
713 static void bta_av_rpc_conn(UNUSED_ATTR tBTA_AV_DATA* p_data) {}
715 /*******************************************************************************
717 * Function bta_av_api_to_ssm
719 * Description forward the API request to stream state machine
724 ******************************************************************************/
725 static void bta_av_api_to_ssm(tBTA_AV_DATA* p_data) {
727 p_data->hdr.event - BTA_AV_FIRST_A2S_API_EVT + BTA_AV_FIRST_A2S_SSM_EVT;
728 tBTA_AV_HNDL handle = p_data->hdr.layer_specific;
729 tBTA_AV_SCB* p_scb = bta_av_hndl_to_scb(handle);
731 if (p_scb != nullptr) {
732 bta_av_ssm_execute(p_scb, event, p_data);
736 /*******************************************************************************
738 * Function bta_av_chk_start
740 * Description if this is audio channel, check if more than one audio
741 * channel is connected & already started.
742 * This function needs to be kept very similar to
743 * bta_av_chk_2nd_start
745 * Returns true, if need api_start
747 ******************************************************************************/
748 bool bta_av_chk_start(tBTA_AV_SCB* p_scb) {
751 if ((p_scb->chnl == BTA_AV_CHNL_AUDIO) && (bta_av_cb.audio_open_cnt >= 2) &&
752 (((p_scb->role & BTA_AV_ROLE_AD_ACP) == 0) || // Outgoing connection or
753 (bta_av_cb.features & BTA_AV_FEAT_ACP_START))) { // Auto-starting option
754 // More than one audio channel is connected.
755 // If this is the 2nd stream as ACP, give INT a chance to issue the START
757 for (int i = 0; i < BTA_AV_NUM_STRS; i++) {
758 tBTA_AV_SCB* p_scbi = bta_av_cb.p_scb[i];
759 if (p_scbi && p_scbi->chnl == BTA_AV_CHNL_AUDIO && p_scbi->co_started) {
761 // May need to update the flush timeout of this already started stream
762 if (p_scbi->co_started != bta_av_cb.audio_open_cnt) {
763 p_scbi->co_started = bta_av_cb.audio_open_cnt;
770 "%s: peer %s channel:%d bta_av_cb.audio_open_cnt:%d role:0x%x "
771 "features:0x%x start:%s",
772 __func__, p_scb->PeerAddress().ToString().c_str(), p_scb->chnl,
773 bta_av_cb.audio_open_cnt, p_scb->role, bta_av_cb.features,
774 logbool(start).c_str());
778 /*******************************************************************************
780 * Function bta_av_restore_switch
782 * Description assume that the caller of this function already makes
783 * sure that there's only one ACL connection left
787 ******************************************************************************/
788 void bta_av_restore_switch(void) {
789 tBTA_AV_CB* p_cb = &bta_av_cb;
793 APPL_TRACE_DEBUG("%s: reg_audio: 0x%x", __func__, bta_av_cb.reg_audio);
794 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
795 mask = BTA_AV_HNDL_TO_MSK(i);
796 if (p_cb->conn_audio == mask) {
797 if (p_cb->p_scb[i]) {
798 BTM_unblock_role_switch_for(p_cb->p_scb[i]->PeerAddress());
805 /*******************************************************************************
807 * Function bta_av_sys_rs_cback
809 * Description Receives the role change event from dm
811 * Returns (BTA_SYS_ROLE_CHANGE, new_role, hci_status, p_bda)
813 ******************************************************************************/
814 static void bta_av_sys_rs_cback(UNUSED_ATTR tBTA_SYS_CONN_STATUS status,
815 uint8_t id, uint8_t app_id,
816 const RawAddress& peer_addr) {
818 tBTA_AV_SCB* p_scb = NULL;
820 uint8_t peer_idx = 0;
823 "%s: peer %s new_role:%d hci_status:0x%x bta_av_cb.rs_idx:%d", __func__,
824 peer_addr.ToString().c_str(), id, app_id, bta_av_cb.rs_idx);
826 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
827 /* loop through all the SCBs to find matching peer addresses and report the
828 * role change event */
829 /* note that more than one SCB (a2dp & vdp) maybe waiting for this event */
830 p_scb = bta_av_cb.p_scb[i];
831 if (p_scb && p_scb->PeerAddress() == peer_addr) {
832 tBTA_AV_ROLE_RES* p_buf =
833 (tBTA_AV_ROLE_RES*)osi_malloc(sizeof(tBTA_AV_ROLE_RES));
835 "%s: peer %s found: new_role:%d, hci_status:0x%x bta_handle:0x%x",
836 __func__, peer_addr.ToString().c_str(), id, app_id, p_scb->hndl);
837 p_buf->hdr.event = BTA_AV_ROLE_CHANGE_EVT;
838 p_buf->hdr.layer_specific = p_scb->hndl;
839 p_buf->new_role = id;
840 p_buf->hci_status = app_id;
841 bta_sys_sendmsg(p_buf);
843 peer_idx = p_scb->hdi + 1; /* Handle index for the peer_addr */
847 /* restore role switch policy, if role switch failed */
848 if ((HCI_SUCCESS != app_id) &&
849 (BTM_GetRole(peer_addr, &cur_role) == BTM_SUCCESS) &&
850 (cur_role == HCI_ROLE_PERIPHERAL)) {
851 BTM_unblock_role_switch_for(peer_addr);
854 /* if BTA_AvOpen() was called for other device, which caused the role switch
855 * of the peer_addr, */
856 /* we need to continue opening process for the BTA_AvOpen(). */
857 if ((bta_av_cb.rs_idx != 0) && (bta_av_cb.rs_idx != peer_idx)) {
858 if ((bta_av_cb.rs_idx - 1) < BTA_AV_NUM_STRS) {
859 p_scb = bta_av_cb.p_scb[bta_av_cb.rs_idx - 1];
861 if (p_scb && p_scb->q_tag == BTA_AV_Q_TAG_OPEN) {
862 APPL_TRACE_DEBUG("%s: peer %s rs_idx:%d, bta_handle:0x%x q_tag:%d",
863 __func__, p_scb->PeerAddress().ToString().c_str(),
864 bta_av_cb.rs_idx, p_scb->hndl, p_scb->q_tag);
866 if (HCI_SUCCESS == app_id || HCI_ERR_NO_CONNECTION == app_id) {
867 p_scb->q_info.open.switch_res = BTA_AV_RS_OK;
870 "%s: peer %s (p_scb peer %s) role switch failed: new_role:%d "
872 __func__, peer_addr.ToString().c_str(),
873 p_scb->PeerAddress().ToString().c_str(), id, app_id);
874 p_scb->q_info.open.switch_res = BTA_AV_RS_FAIL;
877 /* Continue av open process */
878 bta_av_do_disc_a2dp(p_scb, (tBTA_AV_DATA*)&(p_scb->q_info.open));
881 bta_av_cb.rs_idx = 0;
885 /*******************************************************************************
887 * Function bta_av_sco_chg_cback
889 * Description receive & process the SCO connection up/down event from sys.
890 * call setup also triggers this callback, to suspend av before
891 * SCO activity happens, or to resume av once call ends.
895 ******************************************************************************/
896 static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, uint8_t id,
897 UNUSED_ATTR uint8_t app_id,
898 UNUSED_ATTR const RawAddress& peer_addr) {
901 tBTA_AV_API_STOP stop;
903 LOG(INFO) << __func__ << ": status=" << bta_sys_conn_status_text(status)
904 << ", num_links=" << +id;
906 bta_av_cb.sco_occupied = true;
907 LOG_DEBUG("SCO occupied peer:%s status:%s", PRIVATE_ADDRESS(peer_addr),
908 bta_sys_conn_status_text(status).c_str());
910 if (bta_av_cb.features & BTA_AV_FEAT_NO_SCO_SSPD) {
914 /* either BTA_SYS_SCO_OPEN or BTA_SYS_SCO_CLOSE with remaining active SCO */
915 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
916 p_scb = bta_av_cb.p_scb[i];
918 if (p_scb && p_scb->co_started && (!p_scb->sco_suspend)) {
919 VLOG(1) << __func__ << ": suspending scb:" << i;
920 /* scb is used and started, not suspended automatically */
921 p_scb->sco_suspend = true;
924 stop.reconfig_stop = false;
925 bta_av_ssm_execute(p_scb, BTA_AV_AP_STOP_EVT, (tBTA_AV_DATA*)&stop);
929 bta_av_cb.sco_occupied = false;
930 LOG_DEBUG("SCO unoccupied peer:%s status:%s", PRIVATE_ADDRESS(peer_addr),
931 bta_sys_conn_status_text(status).c_str());
933 if (bta_av_cb.features & BTA_AV_FEAT_NO_SCO_SSPD) {
937 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
938 p_scb = bta_av_cb.p_scb[i];
940 if (p_scb && p_scb->sco_suspend) /* scb is used and suspended for SCO */
942 VLOG(1) << __func__ << ": starting scb:" << i;
943 bta_av_ssm_execute(p_scb, BTA_AV_AP_START_EVT, NULL);
949 /*******************************************************************************
951 * Function bta_av_switch_if_needed
953 * Description This function checks if there is another existing AV
954 * channel that is local as peripheral role.
955 * If so, role switch and remove it from link policy.
957 * Returns true, if role switch is done
959 ******************************************************************************/
960 bool bta_av_switch_if_needed(tBTA_AV_SCB* p_scb) {
961 // TODO: A workaround for devices that are connected first, become
962 // Central, and block follow-up role changes - b/72122792 .
971 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
972 mask = BTA_AV_HNDL_TO_MSK(i);
973 p_scbi = bta_av_cb.p_scb[i];
974 if (p_scbi && (p_scb->hdi != i) && /* not the original channel */
975 ((bta_av_cb.conn_audio & mask))) /* connected audio */
977 BTM_GetRole(p_scbi->PeerAddress(), &role);
978 /* this channel is open - clear the role switch link policy for this link
980 if (HCI_ROLE_CENTRAL != role) {
981 if (bta_av_cb.features & BTA_AV_FEAT_CENTRAL)
982 BTM_block_role_switch_for(p_scbi->PeerAddress());
983 if (BTM_CMD_STARTED !=
984 BTM_SwitchRole(p_scbi->PeerAddress(), HCI_ROLE_CENTRAL)) {
985 /* can not switch role on SCBI
986 * start the timer on SCB - because this function is ONLY called when
987 * SCB gets API_OPEN */
988 bta_sys_start_timer(p_scb->avrc_ct_timer, BTA_AV_RS_TIME_VAL,
989 BTA_AV_AVRC_TIMER_EVT, p_scb->hndl);
992 /* mark the original channel as waiting for RS result */
993 bta_av_cb.rs_idx = p_scb->hdi + 1;
1002 /*******************************************************************************
1004 * Function bta_av_link_role_ok
1006 * Description This function checks if the SCB has existing ACL connection
1007 * If so, check if the link role fits the requirements.
1009 * Returns true, if role is ok
1011 ******************************************************************************/
1012 bool bta_av_link_role_ok(tBTA_AV_SCB* p_scb, uint8_t bits) {
1014 if (BTM_GetRole(p_scb->PeerAddress(), &role) != BTM_SUCCESS) {
1015 LOG_WARN("Unable to find link role for device:%s",
1016 PRIVATE_ADDRESS(p_scb->PeerAddress()));
1020 if (role != HCI_ROLE_CENTRAL && (A2DP_BitsSet(bta_av_cb.conn_audio) > bits)) {
1022 "Switch link role to central peer:%s bta_handle:0x%x current_role:%s"
1023 " conn_audio:0x%x bits:%d features:0x%x",
1024 PRIVATE_ADDRESS(p_scb->PeerAddress()), p_scb->hndl,
1025 RoleText(role).c_str(), bta_av_cb.conn_audio, bits, bta_av_cb.features);
1026 const tBTM_STATUS status = BTM_SwitchRoleToCentral(p_scb->PeerAddress());
1028 case BTM_CMD_STARTED:
1030 case BTM_MODE_UNSUPPORTED:
1031 case BTM_DEV_RESTRICT_LISTED:
1032 // Role switch can never happen, but indicate to caller
1033 // a result such that a timer will not start to repeatedly
1034 // try something not possible.
1035 LOG_ERROR("Link can never role switch to central device:%s",
1036 PRIVATE_ADDRESS(p_scb->PeerAddress()));
1039 /* can not switch role on SCB - start the timer on SCB */
1040 p_scb->wait |= BTA_AV_WAIT_ROLE_SW_RES_START;
1041 LOG_ERROR("Unable to switch role to central device:%s error:%s",
1042 PRIVATE_ADDRESS(p_scb->PeerAddress()),
1043 btm_status_text(status).c_str());
1050 /*******************************************************************************
1052 * Function bta_av_dup_audio_buf
1054 * Description dup the audio data to the q_info.a2dp of other audio
1059 ******************************************************************************/
1060 void bta_av_dup_audio_buf(tBTA_AV_SCB* p_scb, BT_HDR* p_buf) {
1061 /* Test whether there is more than one audio channel connected */
1062 if ((p_buf == NULL) || (bta_av_cb.audio_open_cnt < 2)) return;
1064 uint16_t copy_size = BT_HDR_SIZE + p_buf->len + p_buf->offset;
1065 for (int i = 0; i < BTA_AV_NUM_STRS; i++) {
1066 tBTA_AV_SCB* p_scbi = bta_av_cb.p_scb[i];
1068 if (i == p_scb->hdi) continue; /* Ignore the original channel */
1069 if ((p_scbi == NULL) || !p_scbi->co_started)
1070 continue; /* Ignore if SCB is not used or started */
1071 if (!(bta_av_cb.conn_audio & BTA_AV_HNDL_TO_MSK(i)))
1072 continue; /* Audio is not connected */
1074 /* Enqueue the data */
1075 BT_HDR* p_new = (BT_HDR*)osi_malloc(copy_size);
1076 memcpy(p_new, p_buf, copy_size);
1077 list_append(p_scbi->a2dp_list, p_new);
1079 if (list_length(p_scbi->a2dp_list) > p_bta_av_cfg->audio_mqs) {
1080 // Drop the oldest packet
1081 bta_av_co_audio_drop(p_scbi->hndl, p_scbi->PeerAddress());
1082 BT_HDR* p_buf_drop = static_cast<BT_HDR*>(list_front(p_scbi->a2dp_list));
1083 list_remove(p_scbi->a2dp_list, p_buf_drop);
1084 osi_free(p_buf_drop);
1089 static void bta_av_non_state_machine_event(uint16_t event,
1090 tBTA_AV_DATA* p_data) {
1092 case BTA_AV_API_ENABLE_EVT:
1093 bta_av_api_enable(p_data);
1095 case BTA_AV_API_REGISTER_EVT:
1096 bta_av_api_register(p_data);
1098 case BTA_AV_API_DEREGISTER_EVT:
1099 bta_av_api_deregister(p_data);
1101 case BTA_AV_API_DISCONNECT_EVT:
1102 bta_av_api_disconnect(p_data);
1104 case BTA_AV_CI_SRC_DATA_READY_EVT:
1105 bta_av_ci_data(p_data);
1107 case BTA_AV_SIG_CHG_EVT:
1108 bta_av_sig_chg(p_data);
1110 case BTA_AV_SIGNALLING_TIMER_EVT:
1111 bta_av_signalling_timer(p_data);
1113 case BTA_AV_SDP_AVRC_DISC_EVT:
1114 bta_av_rc_disc_done(p_data);
1116 case BTA_AV_AVRC_CLOSE_EVT:
1117 bta_av_rc_closed(p_data);
1119 case BTA_AV_AVRC_BROWSE_OPEN_EVT:
1120 bta_av_rc_browse_opened(p_data);
1122 case BTA_AV_AVRC_BROWSE_CLOSE_EVT:
1123 bta_av_rc_browse_closed(p_data);
1125 case BTA_AV_CONN_CHG_EVT:
1126 bta_av_conn_chg(p_data);
1128 case BTA_AV_DEREG_COMP_EVT:
1129 bta_av_dereg_comp(p_data);
1131 case BTA_AV_AVDT_RPT_CONN_EVT:
1132 bta_av_rpc_conn(p_data);
1134 case BTA_AV_API_START_EVT:
1135 bta_av_api_to_ssm(p_data);
1137 case BTA_AV_API_STOP_EVT:
1138 bta_av_api_to_ssm(p_data);
1143 static void bta_av_better_state_machine(tBTA_AV_CB* p_cb, uint16_t event,
1144 tBTA_AV_DATA* p_data) {
1145 switch (p_cb->state) {
1146 case BTA_AV_INIT_ST:
1148 case BTA_AV_API_DISABLE_EVT:
1149 bta_av_disable(p_cb, p_data);
1151 case BTA_AV_API_META_RSP_EVT:
1152 bta_av_rc_free_rsp(p_cb, p_data);
1154 case BTA_AV_AVRC_OPEN_EVT:
1155 p_cb->state = BTA_AV_OPEN_ST;
1156 bta_av_rc_opened(p_cb, p_data);
1158 case BTA_AV_AVRC_MSG_EVT:
1159 bta_av_rc_free_browse_msg(p_cb, p_data);
1163 case BTA_AV_OPEN_ST:
1165 case BTA_AV_API_DISABLE_EVT:
1166 p_cb->state = BTA_AV_INIT_ST;
1167 bta_av_disable(p_cb, p_data);
1169 case BTA_AV_API_REMOTE_CMD_EVT:
1170 bta_av_rc_remote_cmd(p_cb, p_data);
1172 case BTA_AV_API_VENDOR_CMD_EVT:
1173 bta_av_rc_vendor_cmd(p_cb, p_data);
1175 case BTA_AV_API_VENDOR_RSP_EVT:
1176 bta_av_rc_vendor_rsp(p_cb, p_data);
1178 case BTA_AV_API_META_RSP_EVT:
1179 bta_av_rc_meta_rsp(p_cb, p_data);
1181 case BTA_AV_API_RC_CLOSE_EVT:
1182 bta_av_rc_close(p_cb, p_data);
1184 case BTA_AV_AVRC_OPEN_EVT:
1185 bta_av_rc_opened(p_cb, p_data);
1187 case BTA_AV_AVRC_MSG_EVT:
1188 bta_av_rc_msg(p_cb, p_data);
1190 case BTA_AV_AVRC_NONE_EVT:
1191 p_cb->state = BTA_AV_INIT_ST;
1198 void bta_av_sm_execute(tBTA_AV_CB* p_cb, uint16_t event, tBTA_AV_DATA* p_data) {
1199 APPL_TRACE_EVENT("%s: AV event=0x%x(%s) state=%d(%s)", __func__, event,
1200 bta_av_evt_code(event), p_cb->state,
1201 bta_av_st_code(p_cb->state));
1202 bta_av_better_state_machine(p_cb, event, p_data);
1205 /*******************************************************************************
1207 * Function bta_av_hdl_event
1209 * Description Advanced audio/video main event handling function.
1214 ******************************************************************************/
1215 bool bta_av_hdl_event(BT_HDR_RIGID* p_msg) {
1216 if (p_msg->event > BTA_AV_LAST_EVT) {
1217 return true; /* to free p_msg */
1219 if (p_msg->event >= BTA_AV_FIRST_NSM_EVT) {
1220 APPL_TRACE_VERBOSE("%s: AV nsm event=0x%x(%s)", __func__, p_msg->event,
1221 bta_av_evt_code(p_msg->event));
1222 bta_av_non_state_machine_event(p_msg->event, (tBTA_AV_DATA*)p_msg);
1223 } else if (p_msg->event >= BTA_AV_FIRST_SM_EVT &&
1224 p_msg->event <= BTA_AV_LAST_SM_EVT) {
1225 APPL_TRACE_VERBOSE("%s: AV sm event=0x%x(%s)", __func__, p_msg->event,
1226 bta_av_evt_code(p_msg->event));
1227 /* state machine events */
1228 bta_av_sm_execute(&bta_av_cb, p_msg->event, (tBTA_AV_DATA*)p_msg);
1230 APPL_TRACE_VERBOSE("%s: bta_handle=0x%x", __func__, p_msg->layer_specific);
1231 /* stream state machine events */
1232 bta_av_ssm_execute(bta_av_hndl_to_scb(p_msg->layer_specific), p_msg->event,
1233 (tBTA_AV_DATA*)p_msg);
1238 /*****************************************************************************
1240 ****************************************************************************/
1241 /*******************************************************************************
1243 * Function bta_av_st_code
1249 ******************************************************************************/
1250 static const char* bta_av_st_code(uint8_t state) {
1252 case BTA_AV_INIT_ST:
1254 case BTA_AV_OPEN_ST:
1260 /*******************************************************************************
1262 * Function bta_av_evt_code
1268 ******************************************************************************/
1269 const char* bta_av_evt_code(uint16_t evt_code) {
1271 case BTA_AV_API_DISABLE_EVT:
1272 return "API_DISABLE";
1273 case BTA_AV_API_REMOTE_CMD_EVT:
1274 return "API_REMOTE_CMD";
1275 case BTA_AV_API_VENDOR_CMD_EVT:
1276 return "API_VENDOR_CMD";
1277 case BTA_AV_API_VENDOR_RSP_EVT:
1278 return "API_VENDOR_RSP";
1279 case BTA_AV_API_META_RSP_EVT:
1280 return "API_META_RSP_EVT";
1281 case BTA_AV_API_RC_CLOSE_EVT:
1282 return "API_RC_CLOSE";
1283 case BTA_AV_AVRC_OPEN_EVT:
1285 case BTA_AV_AVRC_MSG_EVT:
1287 case BTA_AV_AVRC_NONE_EVT:
1290 case BTA_AV_API_OPEN_EVT:
1292 case BTA_AV_API_CLOSE_EVT:
1294 case BTA_AV_AP_START_EVT:
1296 case BTA_AV_AP_STOP_EVT:
1298 case BTA_AV_API_RECONFIG_EVT:
1299 return "API_RECONFIG";
1300 case BTA_AV_API_PROTECT_REQ_EVT:
1301 return "API_PROTECT_REQ";
1302 case BTA_AV_API_PROTECT_RSP_EVT:
1303 return "API_PROTECT_RSP";
1304 case BTA_AV_API_RC_OPEN_EVT:
1305 return "API_RC_OPEN";
1306 case BTA_AV_SRC_DATA_READY_EVT:
1307 return "SRC_DATA_READY";
1308 case BTA_AV_CI_SETCONFIG_OK_EVT:
1309 return "CI_SETCONFIG_OK";
1310 case BTA_AV_CI_SETCONFIG_FAIL_EVT:
1311 return "CI_SETCONFIG_FAIL";
1312 case BTA_AV_SDP_DISC_OK_EVT:
1313 return "SDP_DISC_OK";
1314 case BTA_AV_SDP_DISC_FAIL_EVT:
1315 return "SDP_DISC_FAIL";
1316 case BTA_AV_STR_DISC_OK_EVT:
1317 return "STR_DISC_OK";
1318 case BTA_AV_STR_DISC_FAIL_EVT:
1319 return "STR_DISC_FAIL";
1320 case BTA_AV_STR_GETCAP_OK_EVT:
1321 return "STR_GETCAP_OK";
1322 case BTA_AV_STR_GETCAP_FAIL_EVT:
1323 return "STR_GETCAP_FAIL";
1324 case BTA_AV_STR_OPEN_OK_EVT:
1325 return "STR_OPEN_OK";
1326 case BTA_AV_STR_OPEN_FAIL_EVT:
1327 return "STR_OPEN_FAIL";
1328 case BTA_AV_STR_START_OK_EVT:
1329 return "STR_START_OK";
1330 case BTA_AV_STR_START_FAIL_EVT:
1331 return "STR_START_FAIL";
1332 case BTA_AV_STR_CLOSE_EVT:
1334 case BTA_AV_STR_CONFIG_IND_EVT:
1335 return "STR_CONFIG_IND";
1336 case BTA_AV_STR_SECURITY_IND_EVT:
1337 return "STR_SECURITY_IND";
1338 case BTA_AV_STR_SECURITY_CFM_EVT:
1339 return "STR_SECURITY_CFM";
1340 case BTA_AV_STR_WRITE_CFM_EVT:
1341 return "STR_WRITE_CFM";
1342 case BTA_AV_STR_SUSPEND_CFM_EVT:
1343 return "STR_SUSPEND_CFM";
1344 case BTA_AV_STR_RECONFIG_CFM_EVT:
1345 return "STR_RECONFIG_CFM";
1346 case BTA_AV_AVRC_TIMER_EVT:
1347 return "AVRC_TIMER";
1348 case BTA_AV_AVDT_CONNECT_EVT:
1349 return "AVDT_CONNECT";
1350 case BTA_AV_AVDT_DISCONNECT_EVT:
1351 return "AVDT_DISCONNECT";
1352 case BTA_AV_ROLE_CHANGE_EVT:
1353 return "ROLE_CHANGE";
1354 case BTA_AV_AVDT_DELAY_RPT_EVT:
1355 return "AVDT_DELAY_RPT";
1356 case BTA_AV_ACP_CONNECT_EVT:
1357 return "ACP_CONNECT";
1358 case BTA_AV_API_OFFLOAD_START_EVT:
1359 return "OFFLOAD_START";
1360 case BTA_AV_API_OFFLOAD_START_RSP_EVT:
1361 return "OFFLOAD_START_RSP";
1363 case BTA_AV_API_ENABLE_EVT:
1364 return "API_ENABLE";
1365 case BTA_AV_API_REGISTER_EVT:
1367 case BTA_AV_API_DEREGISTER_EVT:
1369 case BTA_AV_API_DISCONNECT_EVT:
1370 return "API_DISCNT";
1371 case BTA_AV_CI_SRC_DATA_READY_EVT:
1372 return "CI_DATA_READY";
1373 case BTA_AV_SIG_CHG_EVT:
1375 case BTA_AV_SIGNALLING_TIMER_EVT:
1376 return "SIGNALLING_TIMER";
1377 case BTA_AV_SDP_AVRC_DISC_EVT:
1378 return "SDP_AVRC_DISC";
1379 case BTA_AV_AVRC_CLOSE_EVT:
1380 return "AVRC_CLOSE";
1381 case BTA_AV_AVRC_BROWSE_OPEN_EVT:
1382 return "AVRC_BROWSE_OPEN";
1383 case BTA_AV_AVRC_BROWSE_CLOSE_EVT:
1384 return "AVRC_BROWSE_CLOSE";
1385 case BTA_AV_CONN_CHG_EVT:
1387 case BTA_AV_DEREG_COMP_EVT:
1388 return "DEREG_COMP";
1389 case BTA_AV_AVDT_RPT_CONN_EVT:
1391 case BTA_AV_API_START_EVT:
1393 case BTA_AV_API_STOP_EVT:
1400 void bta_debug_av_dump(int fd) {
1401 if (appl_trace_level < BT_TRACE_LEVEL_DEBUG) return;
1403 dprintf(fd, "\nBTA AV State:\n");
1404 dprintf(fd, " State Machine State: %s\n", bta_av_st_code(bta_av_cb.state));
1405 dprintf(fd, " Link signalling timer: %s\n",
1406 alarm_is_scheduled(bta_av_cb.link_signalling_timer)
1409 dprintf(fd, " Accept signalling timer: %s\n",
1410 alarm_is_scheduled(bta_av_cb.accept_signalling_timer)
1413 dprintf(fd, " SDP A2DP source handle: %d\n", bta_av_cb.sdp_a2dp_handle);
1414 dprintf(fd, " SDP A2DP sink handle: %d\n", bta_av_cb.sdp_a2dp_snk_handle);
1415 dprintf(fd, " Features: 0x%x\n", bta_av_cb.features);
1416 dprintf(fd, " SDP handle: %d\n", bta_av_cb.handle);
1417 dprintf(fd, " Disabling: %s\n", bta_av_cb.disabling ? "true" : "false");
1418 dprintf(fd, " SCO occupied: %s\n",
1419 bta_av_cb.sco_occupied ? "true" : "false");
1420 dprintf(fd, " Connected audio channels: %d\n", bta_av_cb.audio_open_cnt);
1421 dprintf(fd, " Connected audio channels mask: 0x%x\n", bta_av_cb.conn_audio);
1422 dprintf(fd, " Registered audio channels mask: 0x%x\n", bta_av_cb.reg_audio);
1423 dprintf(fd, " Connected LCBs mask: 0x%x\n", bta_av_cb.conn_lcb);
1425 for (size_t i = 0; i < sizeof(bta_av_cb.lcb) / sizeof(bta_av_cb.lcb[0]);
1427 const tBTA_AV_LCB& lcb = bta_av_cb.lcb[i];
1428 if (lcb.addr.IsEmpty()) {
1431 dprintf(fd, "\n Link control block: %zu peer: %s\n", i,
1432 lcb.addr.ToString().c_str());
1433 dprintf(fd, " Connected stream handle mask: 0x%x\n", lcb.conn_msk);
1434 dprintf(fd, " Index(+1) to LCB: %d\n", lcb.lidx);
1436 for (size_t i = 0; i < BTA_AV_NUM_STRS; i++) {
1437 const tBTA_AV_SCB* p_scb = bta_av_cb.p_scb[i];
1438 if (p_scb == nullptr) {
1441 if (p_scb->PeerAddress().IsEmpty()) {
1444 dprintf(fd, "\n BTA ID: %zu peer: %s\n", i,
1445 p_scb->PeerAddress().ToString().c_str());
1446 dprintf(fd, " SDP discovery started: %s\n",
1447 p_scb->sdp_discovery_started ? "true" : "false");
1448 for (size_t j = 0; j < BTAV_A2DP_CODEC_INDEX_MAX; j++) {
1449 const tBTA_AV_SEP& sep = p_scb->seps[j];
1450 if (sep.av_handle == 0) {
1453 dprintf(fd, " SEP ID: %zu\n", j);
1454 dprintf(fd, " SEP AVDTP handle: %d\n", sep.av_handle);
1455 dprintf(fd, " Local SEP type: %d\n", sep.tsep);
1456 dprintf(fd, " Codec: %s\n", A2DP_CodecName(sep.codec_info));
1458 dprintf(fd, " BTA info tag: %d\n", p_scb->q_tag);
1459 dprintf(fd, " API Open peer: %s\n",
1460 p_scb->q_info.open.bd_addr.ToString().c_str());
1461 dprintf(fd, " Use AVRCP: %s\n",
1462 p_scb->q_info.open.use_rc ? "true" : "false");
1463 dprintf(fd, " Switch result: %d\n", p_scb->q_info.open.switch_res);
1464 dprintf(fd, " Initiator UUID: 0x%x\n", p_scb->q_info.open.uuid);
1465 dprintf(fd, " Saved API Open peer: %s\n",
1466 p_scb->open_api.bd_addr.ToString().c_str());
1467 dprintf(fd, " Use AVRCP: %s\n",
1468 p_scb->open_api.use_rc ? "true" : "false");
1469 dprintf(fd, " Switch result: %d\n", p_scb->open_api.switch_res);
1470 dprintf(fd, " Initiator UUID: 0x%x\n", p_scb->open_api.uuid);
1471 // TODO: Print p_scb->sep_info[], cfg, avrc_ct_timer, current_codec ?
1472 dprintf(fd, " L2CAP Channel ID: %d\n", p_scb->l2c_cid);
1473 dprintf(fd, " Stream MTU: %d\n", p_scb->stream_mtu);
1474 dprintf(fd, " AVDTP version: 0x%x\n", p_scb->AvdtpVersion());
1475 dprintf(fd, " Media type: %d\n", p_scb->media_type);
1476 dprintf(fd, " Congested: %s\n", p_scb->cong ? "true" : "false");
1477 dprintf(fd, " Open status: %d\n", p_scb->open_status);
1478 dprintf(fd, " Channel: %d\n", p_scb->chnl);
1479 dprintf(fd, " BTA handle: 0x%x\n", p_scb->hndl);
1480 dprintf(fd, " Protocol service capabilities mask: 0x%x\n",
1481 p_scb->cur_psc_mask);
1482 dprintf(fd, " AVDTP handle: %d\n", p_scb->avdt_handle);
1483 dprintf(fd, " Stream control block index: %d\n", p_scb->hdi);
1484 dprintf(fd, " State machine state: %s(%d)\n",
1485 bta_av_sst_code(p_scb->state), p_scb->state);
1486 dprintf(fd, " AVDTP label: 0x%x\n", p_scb->avdt_label);
1487 dprintf(fd, " Application ID: %d\n", p_scb->app_id);
1488 dprintf(fd, " Role: 0x%x\n", p_scb->role);
1489 dprintf(fd, " Queued L2CAP buffers: %d\n", p_scb->l2c_bufs);
1490 dprintf(fd, " AVRCP allowed: %s\n", p_scb->use_rc ? "true" : "false");
1491 dprintf(fd, " Stream started: %s\n", p_scb->started ? "true" : "false");
1492 dprintf(fd, " Stream call-out started: %d\n", p_scb->co_started);
1493 dprintf(fd, " AVDTP Reconfig supported: %s\n",
1494 p_scb->recfg_sup ? "true" : "false");
1495 dprintf(fd, " AVDTP Suspend supported: %s\n",
1496 p_scb->suspend_sup ? "true" : "false");
1497 dprintf(fd, " Deregistering: %s\n",
1498 p_scb->deregistering ? "true" : "false");
1499 dprintf(fd, " SCO automatic Suspend: %s\n",
1500 p_scb->sco_suspend ? "true" : "false");
1501 dprintf(fd, " Incoming/outgoing connection collusion mask: 0x%x\n",
1503 dprintf(fd, " Wait mask: 0x%x\n", p_scb->wait);
1504 dprintf(fd, " Don't use RTP header: %s\n",
1505 p_scb->no_rtp_header ? "true" : "false");
1506 dprintf(fd, " Intended UUID of Initiator to connect to: 0x%x\n",