1 /******************************************************************************
2 *
3 * Copyright 2004-2012 Broadcom Corporation
4 *
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:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
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.
16 *
17 ******************************************************************************/
18
19 /******************************************************************************
20 *
21 * This is the main implementation file for the BTA advanced audio/video.
22 *
23 ******************************************************************************/
24
25 #define LOG_TAG "bt_bta_av"
26
27 #include <base/logging.h>
28 #include <string.h>
29
30 #include "bt_target.h"
31 #include "osi/include/log.h"
32 #include "osi/include/osi.h"
33 #include "osi/include/properties.h"
34
35 #include "bta_av_co.h"
36 #include "bta_av_int.h"
37 #include "btif/include/btif_av_co.h"
38 #include "btif/include/btif_config.h"
39 #include "l2c_api.h"
40 #include "l2cdefs.h"
41 #include "utl.h"
42
43 #if (BTA_AR_INCLUDED == TRUE)
44 #include "bta_ar_api.h"
45 #endif
46
47 /*****************************************************************************
48 * Constants and types
49 ****************************************************************************/
50
51 #ifndef BTA_AV_RET_TOUT
52 #define BTA_AV_RET_TOUT 4
53 #endif
54
55 #ifndef BTA_AV_SIG_TOUT
56 #define BTA_AV_SIG_TOUT 4
57 #endif
58
59 #ifndef BTA_AV_IDLE_TOUT
60 #define BTA_AV_IDLE_TOUT 10
61 #endif
62
63 /* the delay time in milliseconds to retry role switch */
64 #ifndef BTA_AV_RS_TIME_VAL
65 #define BTA_AV_RS_TIME_VAL 1000
66 #endif
67
68 #ifndef AVRCP_VERSION_PROPERTY
69 #define AVRCP_VERSION_PROPERTY "persist.bluetooth.avrcpversion"
70 #endif
71
72 #ifndef AVRCP_1_6_STRING
73 #define AVRCP_1_6_STRING "avrcp16"
74 #endif
75
76 #ifndef AVRCP_1_5_STRING
77 #define AVRCP_1_5_STRING "avrcp15"
78 #endif
79
80 #ifndef AVRCP_1_4_STRING
81 #define AVRCP_1_4_STRING "avrcp14"
82 #endif
83
84 #ifndef AVRCP_1_3_STRING
85 #define AVRCP_1_3_STRING "avrcp13"
86 #endif
87
88 #ifndef AVRCP_DEFAULT_VERSION
89 #define AVRCP_DEFAULT_VERSION AVRCP_1_4_STRING
90 #endif
91
92 /* state machine states */
93 enum { BTA_AV_INIT_ST, BTA_AV_OPEN_ST };
94
95 /* state machine action enumeration list */
96 enum {
97 BTA_AV_DISABLE,
98 BTA_AV_RC_OPENED,
99 BTA_AV_RC_REMOTE_CMD,
100 BTA_AV_RC_VENDOR_CMD,
101 BTA_AV_RC_VENDOR_RSP,
102 BTA_AV_RC_FREE_RSP,
103 BTA_AV_RC_FREE_BROWSE_MSG,
104 BTA_AV_RC_META_RSP,
105 BTA_AV_RC_MSG,
106 BTA_AV_RC_CLOSE,
107 BTA_AV_RC_BROWSE_CLOSE,
108 BTA_AV_NUM_ACTIONS
109 };
110
111 #define BTA_AV_IGNORE BTA_AV_NUM_ACTIONS
112
113 /* type for action functions */
114 typedef void (*tBTA_AV_ACTION)(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data);
115
116 /* action functions */
117 const tBTA_AV_ACTION bta_av_action[] = {
118 bta_av_disable,
119 bta_av_rc_opened,
120 bta_av_rc_remote_cmd,
121 bta_av_rc_vendor_cmd,
122 bta_av_rc_vendor_rsp,
123 bta_av_rc_free_rsp,
124 bta_av_rc_free_browse_msg,
125 bta_av_rc_meta_rsp,
126 bta_av_rc_msg,
127 bta_av_rc_close,
128 };
129
130 /* state table information */
131 #define BTA_AV_ACTION_COL 0 /* position of actions */
132 #define BTA_AV_NEXT_STATE 1 /* position of next state */
133 #define BTA_AV_NUM_COLS 2 /* number of columns in state tables */
134
135 /* state table for init state */
136 static const uint8_t bta_av_st_init[][BTA_AV_NUM_COLS] = {
137 /* Event Action 1 Next state */
138 /* API_DISABLE_EVT */ {BTA_AV_DISABLE, BTA_AV_INIT_ST},
139 /* API_REMOTE_CMD_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
140 /* API_VENDOR_CMD_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
141 /* API_VENDOR_RSP_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
142 /* API_META_RSP_EVT */ {BTA_AV_RC_FREE_RSP, BTA_AV_INIT_ST},
143 /* API_RC_CLOSE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
144 /* AVRC_OPEN_EVT */ {BTA_AV_RC_OPENED, BTA_AV_OPEN_ST},
145 /* AVRC_MSG_EVT */ {BTA_AV_RC_FREE_BROWSE_MSG, BTA_AV_INIT_ST},
146 /* AVRC_NONE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
147 };
148
149 /* state table for open state */
150 static const uint8_t bta_av_st_open[][BTA_AV_NUM_COLS] = {
151 /* Event Action 1 Next state */
152 /* API_DISABLE_EVT */ {BTA_AV_DISABLE, BTA_AV_INIT_ST},
153 /* API_REMOTE_CMD_EVT */ {BTA_AV_RC_REMOTE_CMD, BTA_AV_OPEN_ST},
154 /* API_VENDOR_CMD_EVT */ {BTA_AV_RC_VENDOR_CMD, BTA_AV_OPEN_ST},
155 /* API_VENDOR_RSP_EVT */ {BTA_AV_RC_VENDOR_RSP, BTA_AV_OPEN_ST},
156 /* API_META_RSP_EVT */ {BTA_AV_RC_META_RSP, BTA_AV_OPEN_ST},
157 /* API_RC_CLOSE_EVT */ {BTA_AV_RC_CLOSE, BTA_AV_OPEN_ST},
158 /* AVRC_OPEN_EVT */ {BTA_AV_RC_OPENED, BTA_AV_OPEN_ST},
159 /* AVRC_MSG_EVT */ {BTA_AV_RC_MSG, BTA_AV_OPEN_ST},
160 /* AVRC_NONE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST},
161 };
162
163 /* type for state table */
164 typedef const uint8_t (*tBTA_AV_ST_TBL)[BTA_AV_NUM_COLS];
165
166 /* state table */
167 static const tBTA_AV_ST_TBL bta_av_st_tbl[] = {bta_av_st_init, bta_av_st_open};
168
169 typedef void (*tBTA_AV_NSM_ACT)(tBTA_AV_DATA* p_data);
170 static void bta_av_api_enable(tBTA_AV_DATA* p_data);
171 static void bta_av_api_register(tBTA_AV_DATA* p_data);
172 static void bta_av_ci_data(tBTA_AV_DATA* p_data);
173 static void bta_av_rpc_conn(tBTA_AV_DATA* p_data);
174 static void bta_av_api_to_ssm(tBTA_AV_DATA* p_data);
175
176 static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, uint8_t id,
177 uint8_t app_id, const RawAddress& peer_addr);
178 static void bta_av_sys_rs_cback(tBTA_SYS_CONN_STATUS status, uint8_t id,
179 uint8_t app_id, const RawAddress& peer_addr);
180
181 /* action functions */
182 const tBTA_AV_NSM_ACT bta_av_nsm_act[] = {
183 bta_av_api_enable, /* BTA_AV_API_ENABLE_EVT */
184 bta_av_api_register, /* BTA_AV_API_REGISTER_EVT */
185 bta_av_api_deregister, /* BTA_AV_API_DEREGISTER_EVT */
186 bta_av_api_disconnect, /* BTA_AV_API_DISCONNECT_EVT */
187 bta_av_ci_data, /* BTA_AV_CI_SRC_DATA_READY_EVT */
188 bta_av_sig_chg, /* BTA_AV_SIG_CHG_EVT */
189 bta_av_signalling_timer, /* BTA_AV_SIGNALLING_TIMER_EVT */
190 bta_av_rc_disc_done, /* BTA_AV_SDP_AVRC_DISC_EVT */
191 bta_av_rc_closed, /* BTA_AV_AVRC_CLOSE_EVT */
192 bta_av_rc_browse_opened, /* BTA_AV_AVRC_BROWSE_OPEN_EVT */
193 bta_av_rc_browse_closed, /* BTA_AV_AVRC_BROWSE_CLOSE_EVT */
194 bta_av_conn_chg, /* BTA_AV_CONN_CHG_EVT */
195 bta_av_dereg_comp, /* BTA_AV_DEREG_COMP_EVT */
196 bta_av_rpc_conn, /* BTA_AV_AVDT_RPT_CONN_EVT */
197 bta_av_api_to_ssm, /* BTA_AV_API_START_EVT */
198 bta_av_api_to_ssm, /* BTA_AV_API_STOP_EVT */
199 };
200
201 /*****************************************************************************
202 * Global data
203 ****************************************************************************/
204
205 /* AV control block */
206 tBTA_AV_CB bta_av_cb;
207
208 static const char* bta_av_st_code(uint8_t state);
209
210 /*******************************************************************************
211 *
212 * Function bta_av_api_enable
213 *
214 * Description Handle an API enable event.
215 *
216 *
217 * Returns void
218 *
219 ******************************************************************************/
bta_av_api_enable(tBTA_AV_DATA * p_data)220 static void bta_av_api_enable(tBTA_AV_DATA* p_data) {
221 /* initialize control block */
222 memset(&bta_av_cb, 0, sizeof(tBTA_AV_CB));
223
224 for (int i = 0; i < BTA_AV_NUM_RCB; i++)
225 bta_av_cb.rcb[i].handle = BTA_AV_RC_HANDLE_NONE;
226
227 bta_av_cb.rc_acp_handle = BTA_AV_RC_HANDLE_NONE;
228
229 /*
230 * TODO: The "disable" event handling is missing - there we need
231 * to alarm_free() the alarms below.
232 */
233 bta_av_cb.link_signalling_timer = alarm_new("bta_av.link_signalling_timer");
234 bta_av_cb.accept_signalling_timer =
235 alarm_new("bta_av.accept_signalling_timer");
236
237 /* store parameters */
238 bta_av_cb.p_cback = p_data->api_enable.p_cback;
239 bta_av_cb.features = p_data->api_enable.features;
240 bta_av_cb.sec_mask = p_data->api_enable.sec_mask;
241
242 tBTA_AV_ENABLE enable;
243 enable.features = bta_av_cb.features;
244
245 /* Register for SCO change event */
246 if (!(bta_av_cb.features & BTA_AV_FEAT_NO_SCO_SSPD)) {
247 bta_sys_sco_register(bta_av_sco_chg_cback);
248 }
249
250 /* call callback with enable event */
251 tBTA_AV bta_av_data;
252 bta_av_data.enable = enable;
253 (*bta_av_cb.p_cback)(BTA_AV_ENABLE_EVT, &bta_av_data);
254 }
255
256 /*******************************************************************************
257 *
258 * Function bta_av_addr_to_scb
259 *
260 * Description find the stream control block by the peer addr
261 *
262 * Returns void
263 *
264 ******************************************************************************/
bta_av_addr_to_scb(const RawAddress & bd_addr)265 static tBTA_AV_SCB* bta_av_addr_to_scb(const RawAddress& bd_addr) {
266 tBTA_AV_SCB* p_scb = NULL;
267 int xx;
268
269 for (xx = 0; xx < BTA_AV_NUM_STRS; xx++) {
270 if (bta_av_cb.p_scb[xx]) {
271 if (bd_addr == bta_av_cb.p_scb[xx]->PeerAddress()) {
272 p_scb = bta_av_cb.p_scb[xx];
273 break;
274 }
275 }
276 }
277 return p_scb;
278 }
279
BTA_AvObtainPeerChannelIndex(const RawAddress & peer_address)280 int BTA_AvObtainPeerChannelIndex(const RawAddress& peer_address) {
281 // Find the entry for the peer (if exists)
282 tBTA_AV_SCB* p_scb = bta_av_addr_to_scb(peer_address);
283 if (p_scb != nullptr) {
284 return p_scb->hdi;
285 }
286
287 // Find the index for an entry that is not used
288 for (int index = 0; index < BTA_AV_NUM_STRS; index++) {
289 tBTA_AV_SCB* p_scb = bta_av_cb.p_scb[index];
290 if (p_scb == nullptr) {
291 continue;
292 }
293 if (p_scb->PeerAddress().IsEmpty()) {
294 return p_scb->hdi;
295 }
296 }
297
298 return -1;
299 }
300
301 /*******************************************************************************
302 *
303 * Function bta_av_hndl_to_scb
304 *
305 * Description find the stream control block by the handle
306 *
307 * Returns void
308 *
309 ******************************************************************************/
bta_av_hndl_to_scb(uint16_t handle)310 tBTA_AV_SCB* bta_av_hndl_to_scb(uint16_t handle) {
311 tBTA_AV_HNDL hndl = (tBTA_AV_HNDL)handle;
312 tBTA_AV_SCB* p_scb = NULL;
313 uint8_t idx = (hndl & BTA_AV_HNDL_MSK);
314
315 if (idx && (idx <= BTA_AV_NUM_STRS)) {
316 p_scb = bta_av_cb.p_scb[idx - 1];
317 }
318 return p_scb;
319 }
320
321 /*******************************************************************************
322 *
323 * Function bta_av_alloc_scb
324 *
325 * Description allocate stream control block,
326 * register the service to stack
327 * create SDP record
328 *
329 * Returns void
330 *
331 ******************************************************************************/
bta_av_alloc_scb(tBTA_AV_CHNL chnl)332 static tBTA_AV_SCB* bta_av_alloc_scb(tBTA_AV_CHNL chnl) {
333 if (chnl != BTA_AV_CHNL_AUDIO) {
334 APPL_TRACE_ERROR("%s: bad channel: %d", __func__, chnl);
335 return nullptr;
336 }
337
338 for (int xx = 0; xx < BTA_AV_NUM_STRS; xx++) {
339 if (bta_av_cb.p_scb[xx] != nullptr) continue;
340 // Found an empty spot
341 // TODO: After tBTA_AV_SCB is changed to a proper class, the entry
342 // here should be allocated by C++ 'new' statement.
343 tBTA_AV_SCB* p_ret = (tBTA_AV_SCB*)osi_calloc(sizeof(tBTA_AV_SCB));
344 p_ret->rc_handle = BTA_AV_RC_HANDLE_NONE;
345 p_ret->chnl = chnl;
346 p_ret->hndl = (tBTA_AV_HNDL)((xx + 1) | chnl);
347 p_ret->hdi = xx;
348 p_ret->a2dp_list = list_new(nullptr);
349 p_ret->avrc_ct_timer = alarm_new("bta_av.avrc_ct_timer");
350 bta_av_cb.p_scb[xx] = p_ret;
351 return p_ret;
352 }
353
354 return nullptr;
355 }
356
bta_av_free_scb(tBTA_AV_SCB * p_scb)357 void bta_av_free_scb(tBTA_AV_SCB* p_scb) {
358 if (p_scb == nullptr) return;
359 uint8_t scb_index = p_scb->hdi;
360 CHECK(scb_index < BTA_AV_NUM_STRS);
361
362 CHECK(p_scb == bta_av_cb.p_scb[scb_index]);
363 bta_av_cb.p_scb[scb_index] = nullptr;
364 alarm_free(p_scb->avrc_ct_timer);
365 // TODO: After tBTA_AV_SCB is changed to a proper class, the entry
366 // here should be de-allocated by C++ 'delete' statement.
367 osi_free(p_scb);
368 }
369
OnConnected(const RawAddress & peer_address)370 void tBTA_AV_SCB::OnConnected(const RawAddress& peer_address) {
371 peer_address_ = peer_address;
372
373 if (peer_address.IsEmpty()) {
374 LOG_ERROR(LOG_TAG, "%s: Invalid peer address: %s", __func__,
375 peer_address.ToString().c_str());
376 return;
377 }
378
379 // Read and restore the AVDTP version from local storage
380 uint16_t avdtp_version = 0;
381 size_t version_value_size = sizeof(avdtp_version);
382 if (!btif_config_get_bin(peer_address_.ToString(), AVDTP_VERSION_CONFIG_KEY,
383 (uint8_t*)&avdtp_version, &version_value_size)) {
384 LOG_WARN(LOG_TAG, "%s: Failed to read cached peer AVDTP version for %s",
385 __func__, peer_address_.ToString().c_str());
386 } else {
387 SetAvdtpVersion(avdtp_version);
388 }
389 }
390
OnDisconnected()391 void tBTA_AV_SCB::OnDisconnected() {
392 peer_address_ = RawAddress::kEmpty;
393 SetAvdtpVersion(0);
394 }
395
SetAvdtpVersion(uint16_t avdtp_version)396 void tBTA_AV_SCB::SetAvdtpVersion(uint16_t avdtp_version) {
397 avdtp_version_ = avdtp_version;
398 LOG_DEBUG(LOG_TAG, "%s: AVDTP version for %s set to 0x%x", __func__,
399 peer_address_.ToString().c_str(), avdtp_version_);
400 }
401
402 /*******************************************************************************
403 ******************************************************************************/
bta_av_conn_cback(UNUSED_ATTR uint8_t handle,const RawAddress & bd_addr,uint8_t event,tAVDT_CTRL * p_data,uint8_t scb_index)404 void bta_av_conn_cback(UNUSED_ATTR uint8_t handle, const RawAddress& bd_addr,
405 uint8_t event, tAVDT_CTRL* p_data, uint8_t scb_index) {
406 uint16_t evt = 0;
407 tBTA_AV_SCB* p_scb = NULL;
408
409 #if (BTA_AR_INCLUDED == TRUE)
410 if (event == BTA_AR_AVDT_CONN_EVT || event == AVDT_CONNECT_IND_EVT ||
411 event == AVDT_DISCONNECT_IND_EVT)
412 #else
413 if (event == AVDT_CONNECT_IND_EVT || event == AVDT_DISCONNECT_IND_EVT)
414 #endif
415 {
416 evt = BTA_AV_SIG_CHG_EVT;
417 if (event == AVDT_DISCONNECT_IND_EVT) {
418 p_scb = bta_av_addr_to_scb(bd_addr);
419 } else if (event == AVDT_CONNECT_IND_EVT) {
420 APPL_TRACE_DEBUG("%s: CONN_IND is ACP:%d", __func__,
421 p_data->hdr.err_param);
422 }
423
424 tBTA_AV_STR_MSG* p_msg =
425 (tBTA_AV_STR_MSG*)osi_malloc(sizeof(tBTA_AV_STR_MSG));
426 p_msg->hdr.event = evt;
427 p_msg->hdr.layer_specific = event;
428 p_msg->hdr.offset = p_data->hdr.err_param;
429 p_msg->bd_addr = bd_addr;
430 p_msg->scb_index = scb_index;
431 if (p_scb) {
432 APPL_TRACE_DEBUG("%s: scb hndl x%x, role x%x", __func__, p_scb->hndl,
433 p_scb->role);
434 }
435 LOG_INFO(LOG_TAG, "%s: conn_cback bd_addr: %s", __func__,
436 bd_addr.ToString().c_str());
437 bta_sys_sendmsg(p_msg);
438 }
439 }
440
441 /*******************************************************************************
442 *
443 * Function bta_av_a2dp_report_cback
444 *
445 * Description A2DP report callback.
446 *
447 * Returns void
448 *
449 ******************************************************************************/
bta_av_a2dp_report_cback(UNUSED_ATTR uint8_t handle,UNUSED_ATTR AVDT_REPORT_TYPE type,UNUSED_ATTR tAVDT_REPORT_DATA * p_data)450 static void bta_av_a2dp_report_cback(UNUSED_ATTR uint8_t handle,
451 UNUSED_ATTR AVDT_REPORT_TYPE type,
452 UNUSED_ATTR tAVDT_REPORT_DATA* p_data) {
453 /* Do not need to handle report data for now.
454 * This empty function is here for conformance reasons. */
455 }
456
457 /*******************************************************************************
458 *
459 * Function bta_av_api_register
460 *
461 * Description allocate stream control block,
462 * register the service to stack
463 * create SDP record
464 *
465 * Returns void
466 *
467 ******************************************************************************/
bta_av_api_register(tBTA_AV_DATA * p_data)468 static void bta_av_api_register(tBTA_AV_DATA* p_data) {
469 tBTA_AV_REGISTER registr;
470 tBTA_AV_SCB* p_scb; /* stream control block */
471 AvdtpRcb reg;
472 AvdtpStreamConfig avdtp_stream_config;
473 char* p_service_name;
474 tBTA_UTL_COD cod;
475
476 avdtp_stream_config.Reset();
477
478 registr.status = BTA_AV_FAIL_RESOURCES;
479 registr.app_id = p_data->api_reg.app_id;
480 registr.chnl = (tBTA_AV_CHNL)p_data->hdr.layer_specific;
481
482 char avrcp_version[PROPERTY_VALUE_MAX] = {0};
483 osi_property_get(AVRCP_VERSION_PROPERTY, avrcp_version,
484 AVRCP_DEFAULT_VERSION);
485 LOG_INFO(LOG_TAG, "%s: AVRCP version used for sdp: \"%s\"", __func__,
486 avrcp_version);
487
488 uint16_t profile_initialized = p_data->api_reg.service_uuid;
489 if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
490 p_bta_av_cfg = &bta_avk_cfg;
491 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
492 p_bta_av_cfg = &bta_av_cfg;
493
494 if (!strncmp(AVRCP_1_3_STRING, avrcp_version, sizeof(AVRCP_1_3_STRING))) {
495 LOG_INFO(LOG_TAG, "%s: AVRCP 1.3 capabilites used", __func__);
496 p_bta_av_cfg = &bta_av_cfg_compatibility;
497 }
498 }
499
500 APPL_TRACE_DEBUG("%s: profile: 0x%x", __func__, profile_initialized);
501 if (p_bta_av_cfg == NULL) {
502 APPL_TRACE_ERROR("%s: AV configuration is null!", __func__);
503 return;
504 }
505
506 do {
507 p_scb = bta_av_alloc_scb(registr.chnl);
508 if (p_scb == NULL) {
509 APPL_TRACE_ERROR("%s: failed to alloc SCB", __func__);
510 break;
511 }
512
513 registr.hndl = p_scb->hndl;
514 p_scb->app_id = registr.app_id;
515
516 /* initialize the stream control block */
517 registr.status = BTA_AV_SUCCESS;
518
519 if (bta_av_cb.reg_audio == 0) {
520 /* the first channel registered. register to AVDTP */
521 reg.ctrl_mtu = p_bta_av_cfg->sig_mtu;
522 reg.ret_tout = BTA_AV_RET_TOUT;
523 reg.sig_tout = BTA_AV_SIG_TOUT;
524 reg.idle_tout = BTA_AV_IDLE_TOUT;
525 reg.sec_mask = bta_av_cb.sec_mask;
526 reg.scb_index = p_scb->hdi;
527 #if (BTA_AR_INCLUDED == TRUE)
528 bta_ar_reg_avdt(®, bta_av_conn_cback, BTA_ID_AV);
529 #endif
530 bta_sys_role_chg_register(&bta_av_sys_rs_cback);
531
532 /* create remote control TG service if required */
533 if (bta_av_cb.features & (BTA_AV_FEAT_RCTG)) {
534 /* register with no authorization; let AVDTP use authorization instead */
535 #if (BTA_AR_INCLUDED == TRUE)
536 #if (BTA_AV_WITH_AVCTP_AUTHORIZATION == TRUE)
537 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
538 bta_av_cb.sec_mask, BTA_ID_AV);
539 #else
540 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
541 (uint8_t)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)),
542 BTA_ID_AV);
543 #endif
544
545 /* For the Audio Sink role we support additional TG to support
546 * absolute volume.
547 */
548 uint16_t profile_version = AVRC_REV_1_0;
549
550 if (!strncmp(AVRCP_1_6_STRING, avrcp_version,
551 sizeof(AVRCP_1_6_STRING))) {
552 profile_version = AVRC_REV_1_6;
553 } else if (!strncmp(AVRCP_1_5_STRING, avrcp_version,
554 sizeof(AVRCP_1_5_STRING))) {
555 profile_version = AVRC_REV_1_5;
556 } else if (!strncmp(AVRCP_1_3_STRING, avrcp_version,
557 sizeof(AVRCP_1_3_STRING))) {
558 profile_version = AVRC_REV_1_3;
559 } else {
560 profile_version = AVRC_REV_1_4;
561 }
562
563 bta_ar_reg_avrc(
564 UUID_SERVCLASS_AV_REM_CTRL_TARGET, "AV Remote Control Target", NULL,
565 p_bta_av_cfg->avrc_tg_cat, BTA_ID_AV,
566 (bta_av_cb.features & BTA_AV_FEAT_BROWSE), profile_version);
567 #endif
568 }
569
570 /* Set the Capturing service class bit */
571 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE)
572 cod.service = BTM_COD_SERVICE_CAPTURING;
573 else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK)
574 cod.service = BTM_COD_SERVICE_RENDERING;
575 utl_set_device_class(&cod, BTA_UTL_SET_COD_SERVICE_CLASS);
576 } /* if 1st channel */
577
578 /* get stream configuration and create stream */
579 avdtp_stream_config.cfg.num_codec = 1;
580 avdtp_stream_config.nsc_mask = AvdtpStreamConfig::AVDT_NSC_RECONFIG;
581 if (!(bta_av_cb.features & BTA_AV_FEAT_PROTECT)) {
582 avdtp_stream_config.nsc_mask |= AvdtpStreamConfig::AVDT_NSC_SECURITY;
583 }
584 APPL_TRACE_DEBUG("%s: nsc_mask: 0x%x", __func__,
585 avdtp_stream_config.nsc_mask);
586
587 if (p_data->api_reg.p_service_name[0] == 0) {
588 p_service_name = NULL;
589 } else {
590 p_service_name = p_data->api_reg.p_service_name;
591 }
592
593 p_scb->suspend_sup = true;
594 p_scb->recfg_sup = true;
595
596 avdtp_stream_config.scb_index = p_scb->hdi;
597 avdtp_stream_config.p_avdt_ctrl_cback = &bta_av_proc_stream_evt;
598
599 /* set up the audio stream control block */
600 p_scb->p_act_tbl = (const tBTA_AV_ACT*)bta_av_a2dp_action;
601 p_scb->p_cos = &bta_av_a2dp_cos;
602 p_scb->media_type = AVDT_MEDIA_TYPE_AUDIO;
603 avdtp_stream_config.cfg.psc_mask = AVDT_PSC_TRANS;
604 avdtp_stream_config.media_type = AVDT_MEDIA_TYPE_AUDIO;
605 avdtp_stream_config.mtu = p_bta_av_cfg->audio_mtu;
606 avdtp_stream_config.flush_to = L2CAP_DEFAULT_FLUSH_TO;
607 btav_a2dp_codec_index_t codec_index_min = BTAV_A2DP_CODEC_INDEX_SOURCE_MIN;
608 btav_a2dp_codec_index_t codec_index_max = BTAV_A2DP_CODEC_INDEX_SOURCE_MAX;
609
610 if (bta_av_cb.features & BTA_AV_FEAT_REPORT) {
611 avdtp_stream_config.cfg.psc_mask |= AVDT_PSC_REPORT;
612 avdtp_stream_config.p_report_cback = bta_av_a2dp_report_cback;
613 }
614 if (bta_av_cb.features & BTA_AV_FEAT_DELAY_RPT)
615 avdtp_stream_config.cfg.psc_mask |= AVDT_PSC_DELAY_RPT;
616
617 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
618 avdtp_stream_config.tsep = AVDT_TSEP_SRC;
619 codec_index_min = BTAV_A2DP_CODEC_INDEX_SOURCE_MIN;
620 codec_index_max = BTAV_A2DP_CODEC_INDEX_SOURCE_MAX;
621 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
622 avdtp_stream_config.tsep = AVDT_TSEP_SNK;
623 avdtp_stream_config.p_sink_data_cback = bta_av_sink_data_cback;
624 codec_index_min = BTAV_A2DP_CODEC_INDEX_SINK_MIN;
625 codec_index_max = BTAV_A2DP_CODEC_INDEX_SINK_MAX;
626 }
627
628 /* Initialize handles to zero */
629 for (int xx = 0; xx < BTAV_A2DP_CODEC_INDEX_MAX; xx++) {
630 p_scb->seps[xx].av_handle = 0;
631 }
632
633 /* keep the configuration in the stream control block */
634 p_scb->cfg = avdtp_stream_config.cfg;
635 for (int i = codec_index_min; i < codec_index_max; i++) {
636 btav_a2dp_codec_index_t codec_index =
637 static_cast<btav_a2dp_codec_index_t>(i);
638 if (!(*bta_av_a2dp_cos.init)(codec_index, &avdtp_stream_config.cfg)) {
639 continue;
640 }
641 if (AVDT_CreateStream(p_scb->app_id, &p_scb->seps[codec_index].av_handle,
642 avdtp_stream_config) != AVDT_SUCCESS) {
643 continue;
644 }
645 /* Save a copy of the codec */
646 memcpy(p_scb->seps[codec_index].codec_info,
647 avdtp_stream_config.cfg.codec_info, AVDT_CODEC_SIZE);
648 p_scb->seps[codec_index].tsep = avdtp_stream_config.tsep;
649 if (avdtp_stream_config.tsep == AVDT_TSEP_SNK) {
650 p_scb->seps[codec_index].p_app_sink_data_cback =
651 p_data->api_reg.p_app_sink_data_cback;
652 } else {
653 /* In case of A2DP SOURCE we don't need a callback to
654 * handle media packets.
655 */
656 p_scb->seps[codec_index].p_app_sink_data_cback = NULL;
657 }
658 }
659
660 if (!bta_av_cb.reg_audio) {
661 bta_av_cb.sdp_a2dp_handle = 0;
662 bta_av_cb.sdp_a2dp_snk_handle = 0;
663 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
664 /* create the SDP records on the 1st audio channel */
665 bta_av_cb.sdp_a2dp_handle = SDP_CreateRecord();
666 A2DP_AddRecord(UUID_SERVCLASS_AUDIO_SOURCE, p_service_name, NULL,
667 A2DP_SUPF_PLAYER, bta_av_cb.sdp_a2dp_handle);
668 bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SOURCE);
669 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
670 #if (BTA_AV_SINK_INCLUDED == TRUE)
671 bta_av_cb.sdp_a2dp_snk_handle = SDP_CreateRecord();
672 A2DP_AddRecord(UUID_SERVCLASS_AUDIO_SINK, p_service_name, NULL,
673 A2DP_SUPF_PLAYER, bta_av_cb.sdp_a2dp_snk_handle);
674 bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SINK);
675 #endif
676 }
677 /* start listening when A2DP is registered */
678 if (bta_av_cb.features & BTA_AV_FEAT_RCTG)
679 bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1);
680
681 /* if the AV and AVK are both supported, it cannot support the CT role
682 */
683 if (bta_av_cb.features & (BTA_AV_FEAT_RCCT)) {
684 /* if TG is not supported, we need to register to AVCT now */
685 if ((bta_av_cb.features & (BTA_AV_FEAT_RCTG)) == 0) {
686 #if (BTA_AR_INCLUDED == TRUE)
687 #if (BTA_AV_WITH_AVCTP_AUTHORIZATION == TRUE)
688 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
689 bta_av_cb.sec_mask, BTA_ID_AV);
690 #else
691 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
692 (uint8_t)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)),
693 BTA_ID_AV);
694 #endif
695 #endif
696 bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1);
697 }
698 #if (BTA_AR_INCLUDED == TRUE)
699 /* create an SDP record as AVRC CT. We create 1.3 for SOURCE
700 * because we rely on feature bits being scanned by external
701 * devices more than the profile version itself.
702 *
703 * We create 1.4 for SINK since we support browsing.
704 */
705 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) {
706 bta_ar_reg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, NULL, NULL,
707 p_bta_av_cfg->avrc_ct_cat, BTA_ID_AV,
708 (bta_av_cb.features & BTA_AV_FEAT_BROWSE),
709 AVRC_REV_1_3);
710 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) {
711 bta_ar_reg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, NULL, NULL,
712 p_bta_av_cfg->avrc_ct_cat, BTA_ID_AV,
713 (bta_av_cb.features & BTA_AV_FEAT_BROWSE),
714 AVRC_REV_1_6);
715 }
716 #endif
717 }
718 }
719 bta_av_cb.reg_audio |= BTA_AV_HNDL_TO_MSK(p_scb->hdi);
720 APPL_TRACE_DEBUG("%s: reg_audio: 0x%x", __func__, bta_av_cb.reg_audio);
721 } while (0);
722
723 /* call callback with register event */
724 tBTA_AV bta_av_data;
725 bta_av_data.registr = registr;
726 (*bta_av_cb.p_cback)(BTA_AV_REGISTER_EVT, &bta_av_data);
727 }
728
729 /*******************************************************************************
730 *
731 * Function bta_av_api_deregister
732 *
733 * Description de-register a channel
734 *
735 *
736 * Returns void
737 *
738 ******************************************************************************/
bta_av_api_deregister(tBTA_AV_DATA * p_data)739 void bta_av_api_deregister(tBTA_AV_DATA* p_data) {
740 tBTA_AV_SCB* p_scb = bta_av_hndl_to_scb(p_data->hdr.layer_specific);
741
742 if (p_scb) {
743 p_scb->deregistering = true;
744 bta_av_ssm_execute(p_scb, BTA_AV_API_CLOSE_EVT, p_data);
745 } else {
746 bta_av_dereg_comp(p_data);
747 }
748 }
749
750 /*******************************************************************************
751 *
752 * Function bta_av_ci_data
753 *
754 * Description Forward the BTA_AV_CI_SRC_DATA_READY_EVT to stream state
755 * machine.
756 *
757 *
758 * Returns void
759 *
760 ******************************************************************************/
bta_av_ci_data(tBTA_AV_DATA * p_data)761 static void bta_av_ci_data(tBTA_AV_DATA* p_data) {
762 tBTA_AV_SCB* p_scb;
763 int i;
764 uint8_t chnl = (uint8_t)p_data->hdr.layer_specific;
765
766 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
767 p_scb = bta_av_cb.p_scb[i];
768
769 if (p_scb && p_scb->chnl == chnl) {
770 bta_av_ssm_execute(p_scb, BTA_AV_SRC_DATA_READY_EVT, p_data);
771 }
772 }
773 }
774
775 /*******************************************************************************
776 *
777 * Function bta_av_rpc_conn
778 *
779 * Description report report channel open
780 *
781 * Returns void
782 *
783 ******************************************************************************/
bta_av_rpc_conn(UNUSED_ATTR tBTA_AV_DATA * p_data)784 static void bta_av_rpc_conn(UNUSED_ATTR tBTA_AV_DATA* p_data) {}
785
786 /*******************************************************************************
787 *
788 * Function bta_av_api_to_ssm
789 *
790 * Description forward the API request to stream state machine
791 *
792 *
793 * Returns void
794 *
795 ******************************************************************************/
bta_av_api_to_ssm(tBTA_AV_DATA * p_data)796 static void bta_av_api_to_ssm(tBTA_AV_DATA* p_data) {
797 uint16_t event =
798 p_data->hdr.event - BTA_AV_FIRST_A2S_API_EVT + BTA_AV_FIRST_A2S_SSM_EVT;
799 tBTA_AV_HNDL handle = p_data->hdr.layer_specific;
800 tBTA_AV_SCB* p_scb = bta_av_hndl_to_scb(handle);
801
802 if (p_scb != nullptr) {
803 bta_av_ssm_execute(p_scb, event, p_data);
804 }
805 }
806
807 /*******************************************************************************
808 *
809 * Function bta_av_chk_start
810 *
811 * Description if this is audio channel, check if more than one audio
812 * channel is connected & already started.
813 * This function needs to be kept very similar to
814 * bta_av_chk_2nd_start
815 *
816 * Returns true, if need api_start
817 *
818 ******************************************************************************/
bta_av_chk_start(tBTA_AV_SCB * p_scb)819 bool bta_av_chk_start(tBTA_AV_SCB* p_scb) {
820 bool start = false;
821
822 if ((p_scb->chnl == BTA_AV_CHNL_AUDIO) && (bta_av_cb.audio_open_cnt >= 2) &&
823 (((p_scb->role & BTA_AV_ROLE_AD_ACP) == 0) || // Outgoing connection or
824 (bta_av_cb.features & BTA_AV_FEAT_ACP_START))) { // Auto-starting option
825 // More than one audio channel is connected.
826 // If this is the 2nd stream as ACP, give INT a chance to issue the START
827 // command.
828 for (int i = 0; i < BTA_AV_NUM_STRS; i++) {
829 tBTA_AV_SCB* p_scbi = bta_av_cb.p_scb[i];
830 if (p_scbi && p_scbi->chnl == BTA_AV_CHNL_AUDIO && p_scbi->co_started) {
831 start = true;
832 // May need to update the flush timeout of this already started stream
833 if (p_scbi->co_started != bta_av_cb.audio_open_cnt) {
834 p_scbi->co_started = bta_av_cb.audio_open_cnt;
835 L2CA_SetFlushTimeout(
836 p_scbi->PeerAddress(),
837 p_bta_av_cfg->p_audio_flush_to[p_scbi->co_started - 1]);
838 }
839 }
840 }
841 }
842
843 LOG_INFO(LOG_TAG,
844 "%s: peer %s channel:%d bta_av_cb.audio_open_cnt:%d role:0x%x "
845 "features:0x%x start:%s",
846 __func__, p_scb->PeerAddress().ToString().c_str(), p_scb->chnl,
847 bta_av_cb.audio_open_cnt, p_scb->role, bta_av_cb.features,
848 logbool(start).c_str());
849 return start;
850 }
851
852 /*******************************************************************************
853 *
854 * Function bta_av_restore_switch
855 *
856 * Description assume that the caller of this function already makes
857 * sure that there's only one ACL connection left
858 *
859 * Returns void
860 *
861 ******************************************************************************/
bta_av_restore_switch(void)862 void bta_av_restore_switch(void) {
863 tBTA_AV_CB* p_cb = &bta_av_cb;
864 int i;
865 uint8_t mask;
866 uint8_t set_policy = (HCI_ENABLE_SNIFF_MODE | HCI_ENABLE_MASTER_SLAVE_SWITCH);
867
868 APPL_TRACE_DEBUG("%s: reg_audio: 0x%x", __func__, bta_av_cb.reg_audio);
869 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
870 mask = BTA_AV_HNDL_TO_MSK(i);
871 if (p_cb->conn_audio == mask) {
872 if (p_cb->p_scb[i]) {
873 bta_sys_set_policy(BTA_ID_AV, set_policy,
874 p_cb->p_scb[i]->PeerAddress());
875 }
876 break;
877 }
878 }
879 }
880
881 /*******************************************************************************
882 *
883 * Function bta_av_sys_rs_cback
884 *
885 * Description Receives the role change event from dm
886 *
887 * Returns (BTA_SYS_ROLE_CHANGE, new_role, hci_status, p_bda)
888 *
889 ******************************************************************************/
bta_av_sys_rs_cback(UNUSED_ATTR tBTA_SYS_CONN_STATUS status,uint8_t id,uint8_t app_id,const RawAddress & peer_addr)890 static void bta_av_sys_rs_cback(UNUSED_ATTR tBTA_SYS_CONN_STATUS status,
891 uint8_t id, uint8_t app_id,
892 const RawAddress& peer_addr) {
893 int i;
894 tBTA_AV_SCB* p_scb = NULL;
895 uint8_t cur_role;
896 uint8_t peer_idx = 0;
897 uint8_t set_policy = (HCI_ENABLE_SNIFF_MODE | HCI_ENABLE_MASTER_SLAVE_SWITCH);
898
899 APPL_TRACE_DEBUG(
900 "%s: peer %s new_role:%d hci_status:0x%x bta_av_cb.rs_idx:%d", __func__,
901 peer_addr.ToString().c_str(), id, app_id, bta_av_cb.rs_idx);
902
903 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
904 /* loop through all the SCBs to find matching peer addresses and report the
905 * role change event */
906 /* note that more than one SCB (a2dp & vdp) maybe waiting for this event */
907 p_scb = bta_av_cb.p_scb[i];
908 if (p_scb && p_scb->PeerAddress() == peer_addr) {
909 tBTA_AV_ROLE_RES* p_buf =
910 (tBTA_AV_ROLE_RES*)osi_malloc(sizeof(tBTA_AV_ROLE_RES));
911 APPL_TRACE_DEBUG(
912 "%s: peer %s found: new_role:%d, hci_status:0x%x hndl:0x%x", __func__,
913 peer_addr.ToString().c_str(), id, app_id, p_scb->hndl);
914 /*
915 if ((id != BTM_ROLE_MASTER) && (app_id != HCI_SUCCESS))
916 {
917 bta_sys_set_policy(BTA_ID_AV, set_policy, p_scb->PeerAddress());
918 }
919 */
920 p_buf->hdr.event = BTA_AV_ROLE_CHANGE_EVT;
921 p_buf->hdr.layer_specific = p_scb->hndl;
922 p_buf->new_role = id;
923 p_buf->hci_status = app_id;
924 bta_sys_sendmsg(p_buf);
925
926 peer_idx = p_scb->hdi + 1; /* Handle index for the peer_addr */
927 }
928 }
929
930 /* restore role switch policy, if role switch failed */
931 if ((HCI_SUCCESS != app_id) &&
932 (BTM_GetRole(peer_addr, &cur_role) == BTM_SUCCESS) &&
933 (cur_role == BTM_ROLE_SLAVE)) {
934 bta_sys_set_policy(BTA_ID_AV, set_policy, peer_addr);
935 }
936
937 /* if BTA_AvOpen() was called for other device, which caused the role switch
938 * of the peer_addr, */
939 /* we need to continue opening process for the BTA_AvOpen(). */
940 if ((bta_av_cb.rs_idx != 0) && (bta_av_cb.rs_idx != peer_idx)) {
941 if ((bta_av_cb.rs_idx - 1) < BTA_AV_NUM_STRS) {
942 p_scb = bta_av_cb.p_scb[bta_av_cb.rs_idx - 1];
943 }
944 if (p_scb && p_scb->q_tag == BTA_AV_Q_TAG_OPEN) {
945 APPL_TRACE_DEBUG("%s: peer %s rs_idx:%d, hndl:0x%x q_tag:%d", __func__,
946 p_scb->PeerAddress().ToString().c_str(),
947 bta_av_cb.rs_idx, p_scb->hndl, p_scb->q_tag);
948
949 if (HCI_SUCCESS == app_id || HCI_ERR_NO_CONNECTION == app_id) {
950 p_scb->q_info.open.switch_res = BTA_AV_RS_OK;
951 } else {
952 APPL_TRACE_ERROR(
953 "%s: peer %s (p_scb peer %s) role switch failed: new_role:%d "
954 "hci_status:0x%x",
955 __func__, peer_addr.ToString().c_str(),
956 p_scb->PeerAddress().ToString().c_str(), id, app_id);
957 p_scb->q_info.open.switch_res = BTA_AV_RS_FAIL;
958 }
959
960 /* Continue av open process */
961 bta_av_do_disc_a2dp(p_scb, (tBTA_AV_DATA*)&(p_scb->q_info.open));
962 }
963
964 bta_av_cb.rs_idx = 0;
965 }
966 }
967
968 /*******************************************************************************
969 *
970 * Function bta_av_sco_chg_cback
971 *
972 * Description receive & process the SCO connection up/down event from sys.
973 * call setup also triggers this callback, to suspend av before
974 * SCO activity happens, or to resume av once call ends.
975 *
976 * Returns void
977 *
978 ******************************************************************************/
bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status,uint8_t id,UNUSED_ATTR uint8_t app_id,UNUSED_ATTR const RawAddress & peer_addr)979 static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, uint8_t id,
980 UNUSED_ATTR uint8_t app_id,
981 UNUSED_ATTR const RawAddress& peer_addr) {
982 tBTA_AV_SCB* p_scb;
983 int i;
984 tBTA_AV_API_STOP stop;
985
986 APPL_TRACE_DEBUG("%s: id:%d status:%d", __func__, id, status);
987 if (id) {
988 bta_av_cb.sco_occupied = true;
989
990 /* either BTA_SYS_SCO_OPEN or BTA_SYS_SCO_CLOSE with remaining active SCO */
991 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
992 p_scb = bta_av_cb.p_scb[i];
993
994 if (p_scb && p_scb->co_started && (!p_scb->sco_suspend)) {
995 APPL_TRACE_DEBUG("%s: suspending scb:%d", __func__, i);
996 /* scb is used and started, not suspended automatically */
997 p_scb->sco_suspend = true;
998 stop.flush = false;
999 stop.suspend = true;
1000 stop.reconfig_stop = false;
1001 bta_av_ssm_execute(p_scb, BTA_AV_AP_STOP_EVT, (tBTA_AV_DATA*)&stop);
1002 }
1003 }
1004 } else {
1005 bta_av_cb.sco_occupied = false;
1006
1007 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
1008 p_scb = bta_av_cb.p_scb[i];
1009
1010 if (p_scb && p_scb->sco_suspend) /* scb is used and suspended for SCO */
1011 {
1012 APPL_TRACE_DEBUG("%s: starting scb:%d", __func__, i);
1013 bta_av_ssm_execute(p_scb, BTA_AV_AP_START_EVT, NULL);
1014 }
1015 }
1016 }
1017 }
1018
1019 /*******************************************************************************
1020 *
1021 * Function bta_av_switch_if_needed
1022 *
1023 * Description This function checks if there is another existing AV
1024 * channel that is local as slave role.
1025 * If so, role switch and remove it from link policy.
1026 *
1027 * Returns true, if role switch is done
1028 *
1029 ******************************************************************************/
bta_av_switch_if_needed(tBTA_AV_SCB * p_scb)1030 bool bta_av_switch_if_needed(tBTA_AV_SCB* p_scb) {
1031 // TODO: A workaround for devices that are connected first, become
1032 // Master, and block follow-up role changes - b/72122792 .
1033 return false;
1034 #if 0
1035 uint8_t role;
1036 bool needed = false;
1037 tBTA_AV_SCB* p_scbi;
1038 int i;
1039 uint8_t mask;
1040
1041 for (i = 0; i < BTA_AV_NUM_STRS; i++) {
1042 mask = BTA_AV_HNDL_TO_MSK(i);
1043 p_scbi = bta_av_cb.p_scb[i];
1044 if (p_scbi && (p_scb->hdi != i) && /* not the original channel */
1045 ((bta_av_cb.conn_audio & mask))) /* connected audio */
1046 {
1047 BTM_GetRole(p_scbi->PeerAddress(), &role);
1048 /* this channel is open - clear the role switch link policy for this link
1049 */
1050 if (BTM_ROLE_MASTER != role) {
1051 if (bta_av_cb.features & BTA_AV_FEAT_MASTER)
1052 bta_sys_clear_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH,
1053 p_scbi->PeerAddress());
1054 if (BTM_CMD_STARTED !=
1055 BTM_SwitchRole(p_scbi->PeerAddress(), BTM_ROLE_MASTER, NULL)) {
1056 /* can not switch role on SCBI
1057 * start the timer on SCB - because this function is ONLY called when
1058 * SCB gets API_OPEN */
1059 bta_sys_start_timer(p_scb->avrc_ct_timer, BTA_AV_RS_TIME_VAL,
1060 BTA_AV_AVRC_TIMER_EVT, p_scb->hndl);
1061 }
1062 needed = true;
1063 /* mark the original channel as waiting for RS result */
1064 bta_av_cb.rs_idx = p_scb->hdi + 1;
1065 break;
1066 }
1067 }
1068 }
1069 return needed;
1070 #endif
1071 }
1072
1073 /*******************************************************************************
1074 *
1075 * Function bta_av_link_role_ok
1076 *
1077 * Description This function checks if the SCB has existing ACL connection
1078 * If so, check if the link role fits the requirements.
1079 *
1080 * Returns true, if role is ok
1081 *
1082 ******************************************************************************/
bta_av_link_role_ok(tBTA_AV_SCB * p_scb,uint8_t bits)1083 bool bta_av_link_role_ok(tBTA_AV_SCB* p_scb, uint8_t bits) {
1084 uint8_t role;
1085 bool is_ok = true;
1086
1087 if (BTM_GetRole(p_scb->PeerAddress(), &role) == BTM_SUCCESS) {
1088 LOG_INFO(
1089 LOG_TAG,
1090 "%s: peer %s hndl:0x%x role:%d conn_audio:0x%x bits:%d features:0x%x",
1091 __func__, p_scb->PeerAddress().ToString().c_str(), p_scb->hndl, role,
1092 bta_av_cb.conn_audio, bits, bta_av_cb.features);
1093 if (BTM_ROLE_MASTER != role &&
1094 (A2DP_BitsSet(bta_av_cb.conn_audio) > bits ||
1095 (bta_av_cb.features & BTA_AV_FEAT_MASTER))) {
1096 if (bta_av_cb.features & BTA_AV_FEAT_MASTER)
1097 bta_sys_clear_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH,
1098 p_scb->PeerAddress());
1099
1100 tBTM_STATUS status =
1101 BTM_SwitchRole(p_scb->PeerAddress(), BTM_ROLE_MASTER, NULL);
1102 if (status != BTM_CMD_STARTED) {
1103 /* can not switch role on SCB - start the timer on SCB */
1104 LOG_ERROR(LOG_TAG,
1105 "%s: peer %s BTM_SwitchRole(BTM_ROLE_MASTER) error: %d",
1106 __func__, p_scb->PeerAddress().ToString().c_str(), status);
1107 }
1108 is_ok = false;
1109 p_scb->wait |= BTA_AV_WAIT_ROLE_SW_RES_START;
1110 }
1111 }
1112
1113 return is_ok;
1114 }
1115
1116 /*******************************************************************************
1117 *
1118 * Function bta_av_dup_audio_buf
1119 *
1120 * Description dup the audio data to the q_info.a2dp of other audio
1121 * channels
1122 *
1123 * Returns void
1124 *
1125 ******************************************************************************/
bta_av_dup_audio_buf(tBTA_AV_SCB * p_scb,BT_HDR * p_buf)1126 void bta_av_dup_audio_buf(tBTA_AV_SCB* p_scb, BT_HDR* p_buf) {
1127 /* Test whether there is more than one audio channel connected */
1128 if ((p_buf == NULL) || (bta_av_cb.audio_open_cnt < 2)) return;
1129
1130 uint16_t copy_size = BT_HDR_SIZE + p_buf->len + p_buf->offset;
1131 for (int i = 0; i < BTA_AV_NUM_STRS; i++) {
1132 tBTA_AV_SCB* p_scbi = bta_av_cb.p_scb[i];
1133
1134 if (i == p_scb->hdi) continue; /* Ignore the original channel */
1135 if ((p_scbi == NULL) || !p_scbi->co_started)
1136 continue; /* Ignore if SCB is not used or started */
1137 if (!(bta_av_cb.conn_audio & BTA_AV_HNDL_TO_MSK(i)))
1138 continue; /* Audio is not connected */
1139
1140 /* Enqueue the data */
1141 BT_HDR* p_new = (BT_HDR*)osi_malloc(copy_size);
1142 memcpy(p_new, p_buf, copy_size);
1143 list_append(p_scbi->a2dp_list, p_new);
1144
1145 if (list_length(p_scbi->a2dp_list) > p_bta_av_cfg->audio_mqs) {
1146 // Drop the oldest packet
1147 bta_av_co_audio_drop(p_scbi->hndl, p_scbi->PeerAddress());
1148 BT_HDR* p_buf_drop = static_cast<BT_HDR*>(list_front(p_scbi->a2dp_list));
1149 list_remove(p_scbi->a2dp_list, p_buf_drop);
1150 osi_free(p_buf_drop);
1151 }
1152 }
1153 }
1154
1155 /*******************************************************************************
1156 *
1157 * Function bta_av_sm_execute
1158 *
1159 * Description State machine event handling function for AV
1160 *
1161 *
1162 * Returns void
1163 *
1164 ******************************************************************************/
bta_av_sm_execute(tBTA_AV_CB * p_cb,uint16_t event,tBTA_AV_DATA * p_data)1165 void bta_av_sm_execute(tBTA_AV_CB* p_cb, uint16_t event, tBTA_AV_DATA* p_data) {
1166 tBTA_AV_ST_TBL state_table;
1167 uint8_t action;
1168
1169 APPL_TRACE_EVENT("%s: AV event=0x%x(%s) state=%d(%s)", __func__, event,
1170 bta_av_evt_code(event), p_cb->state,
1171 bta_av_st_code(p_cb->state));
1172
1173 /* look up the state table for the current state */
1174 state_table = bta_av_st_tbl[p_cb->state];
1175
1176 event &= 0x00FF;
1177
1178 /* set next state */
1179 p_cb->state = state_table[event][BTA_AV_NEXT_STATE];
1180 APPL_TRACE_EVENT("%s: next state=%d event offset:%d", __func__, p_cb->state,
1181 event);
1182
1183 /* execute action functions */
1184 action = state_table[event][BTA_AV_ACTION_COL];
1185 if (action != BTA_AV_IGNORE) {
1186 APPL_TRACE_EVENT("%s: action executed %d", __func__, action);
1187 (*bta_av_action[action])(p_cb, p_data);
1188 }
1189 }
1190
1191 /*******************************************************************************
1192 *
1193 * Function bta_av_hdl_event
1194 *
1195 * Description Advanced audio/video main event handling function.
1196 *
1197 *
1198 * Returns bool
1199 *
1200 ******************************************************************************/
bta_av_hdl_event(BT_HDR * p_msg)1201 bool bta_av_hdl_event(BT_HDR* p_msg) {
1202 if (p_msg->event > BTA_AV_LAST_EVT) {
1203 return true; /* to free p_msg */
1204 }
1205 if (p_msg->event >= BTA_AV_FIRST_NSM_EVT) {
1206 APPL_TRACE_VERBOSE("%s: AV nsm event=0x%x(%s)", __func__, p_msg->event,
1207 bta_av_evt_code(p_msg->event));
1208 /* non state machine events */
1209 (*bta_av_nsm_act[p_msg->event - BTA_AV_FIRST_NSM_EVT])(
1210 (tBTA_AV_DATA*)p_msg);
1211 } else if (p_msg->event >= BTA_AV_FIRST_SM_EVT &&
1212 p_msg->event <= BTA_AV_LAST_SM_EVT) {
1213 APPL_TRACE_VERBOSE("%s: AV sm event=0x%x(%s)", __func__, p_msg->event,
1214 bta_av_evt_code(p_msg->event));
1215 /* state machine events */
1216 bta_av_sm_execute(&bta_av_cb, p_msg->event, (tBTA_AV_DATA*)p_msg);
1217 } else {
1218 APPL_TRACE_VERBOSE("%s: handle=0x%x", __func__, p_msg->layer_specific);
1219 /* stream state machine events */
1220 bta_av_ssm_execute(bta_av_hndl_to_scb(p_msg->layer_specific), p_msg->event,
1221 (tBTA_AV_DATA*)p_msg);
1222 }
1223 return true;
1224 }
1225
1226 /*****************************************************************************
1227 * Debug Functions
1228 ****************************************************************************/
1229 /*******************************************************************************
1230 *
1231 * Function bta_av_st_code
1232 *
1233 * Description
1234 *
1235 * Returns char *
1236 *
1237 ******************************************************************************/
bta_av_st_code(uint8_t state)1238 static const char* bta_av_st_code(uint8_t state) {
1239 switch (state) {
1240 case BTA_AV_INIT_ST:
1241 return "INIT";
1242 case BTA_AV_OPEN_ST:
1243 return "OPEN";
1244 default:
1245 return "unknown";
1246 }
1247 }
1248 /*******************************************************************************
1249 *
1250 * Function bta_av_evt_code
1251 *
1252 * Description
1253 *
1254 * Returns char *
1255 *
1256 ******************************************************************************/
bta_av_evt_code(uint16_t evt_code)1257 const char* bta_av_evt_code(uint16_t evt_code) {
1258 switch (evt_code) {
1259 case BTA_AV_API_DISABLE_EVT:
1260 return "API_DISABLE";
1261 case BTA_AV_API_REMOTE_CMD_EVT:
1262 return "API_REMOTE_CMD";
1263 case BTA_AV_API_VENDOR_CMD_EVT:
1264 return "API_VENDOR_CMD";
1265 case BTA_AV_API_VENDOR_RSP_EVT:
1266 return "API_VENDOR_RSP";
1267 case BTA_AV_API_META_RSP_EVT:
1268 return "API_META_RSP_EVT";
1269 case BTA_AV_API_RC_CLOSE_EVT:
1270 return "API_RC_CLOSE";
1271 case BTA_AV_AVRC_OPEN_EVT:
1272 return "AVRC_OPEN";
1273 case BTA_AV_AVRC_MSG_EVT:
1274 return "AVRC_MSG";
1275 case BTA_AV_AVRC_NONE_EVT:
1276 return "AVRC_NONE";
1277
1278 case BTA_AV_API_OPEN_EVT:
1279 return "API_OPEN";
1280 case BTA_AV_API_CLOSE_EVT:
1281 return "API_CLOSE";
1282 case BTA_AV_AP_START_EVT:
1283 return "AP_START";
1284 case BTA_AV_AP_STOP_EVT:
1285 return "AP_STOP";
1286 case BTA_AV_API_RECONFIG_EVT:
1287 return "API_RECONFIG";
1288 case BTA_AV_API_PROTECT_REQ_EVT:
1289 return "API_PROTECT_REQ";
1290 case BTA_AV_API_PROTECT_RSP_EVT:
1291 return "API_PROTECT_RSP";
1292 case BTA_AV_API_RC_OPEN_EVT:
1293 return "API_RC_OPEN";
1294 case BTA_AV_SRC_DATA_READY_EVT:
1295 return "SRC_DATA_READY";
1296 case BTA_AV_CI_SETCONFIG_OK_EVT:
1297 return "CI_SETCONFIG_OK";
1298 case BTA_AV_CI_SETCONFIG_FAIL_EVT:
1299 return "CI_SETCONFIG_FAIL";
1300 case BTA_AV_SDP_DISC_OK_EVT:
1301 return "SDP_DISC_OK";
1302 case BTA_AV_SDP_DISC_FAIL_EVT:
1303 return "SDP_DISC_FAIL";
1304 case BTA_AV_STR_DISC_OK_EVT:
1305 return "STR_DISC_OK";
1306 case BTA_AV_STR_DISC_FAIL_EVT:
1307 return "STR_DISC_FAIL";
1308 case BTA_AV_STR_GETCAP_OK_EVT:
1309 return "STR_GETCAP_OK";
1310 case BTA_AV_STR_GETCAP_FAIL_EVT:
1311 return "STR_GETCAP_FAIL";
1312 case BTA_AV_STR_OPEN_OK_EVT:
1313 return "STR_OPEN_OK";
1314 case BTA_AV_STR_OPEN_FAIL_EVT:
1315 return "STR_OPEN_FAIL";
1316 case BTA_AV_STR_START_OK_EVT:
1317 return "STR_START_OK";
1318 case BTA_AV_STR_START_FAIL_EVT:
1319 return "STR_START_FAIL";
1320 case BTA_AV_STR_CLOSE_EVT:
1321 return "STR_CLOSE";
1322 case BTA_AV_STR_CONFIG_IND_EVT:
1323 return "STR_CONFIG_IND";
1324 case BTA_AV_STR_SECURITY_IND_EVT:
1325 return "STR_SECURITY_IND";
1326 case BTA_AV_STR_SECURITY_CFM_EVT:
1327 return "STR_SECURITY_CFM";
1328 case BTA_AV_STR_WRITE_CFM_EVT:
1329 return "STR_WRITE_CFM";
1330 case BTA_AV_STR_SUSPEND_CFM_EVT:
1331 return "STR_SUSPEND_CFM";
1332 case BTA_AV_STR_RECONFIG_CFM_EVT:
1333 return "STR_RECONFIG_CFM";
1334 case BTA_AV_AVRC_TIMER_EVT:
1335 return "AVRC_TIMER";
1336 case BTA_AV_AVDT_CONNECT_EVT:
1337 return "AVDT_CONNECT";
1338 case BTA_AV_AVDT_DISCONNECT_EVT:
1339 return "AVDT_DISCONNECT";
1340 case BTA_AV_ROLE_CHANGE_EVT:
1341 return "ROLE_CHANGE";
1342 case BTA_AV_AVDT_DELAY_RPT_EVT:
1343 return "AVDT_DELAY_RPT";
1344 case BTA_AV_ACP_CONNECT_EVT:
1345 return "ACP_CONNECT";
1346
1347 case BTA_AV_API_ENABLE_EVT:
1348 return "API_ENABLE";
1349 case BTA_AV_API_REGISTER_EVT:
1350 return "API_REG";
1351 case BTA_AV_API_DEREGISTER_EVT:
1352 return "API_DEREG";
1353 case BTA_AV_API_DISCONNECT_EVT:
1354 return "API_DISCNT";
1355 case BTA_AV_CI_SRC_DATA_READY_EVT:
1356 return "CI_DATA_READY";
1357 case BTA_AV_SIG_CHG_EVT:
1358 return "SIG_CHG";
1359 case BTA_AV_SIGNALLING_TIMER_EVT:
1360 return "SIGNALLING_TIMER";
1361 case BTA_AV_SDP_AVRC_DISC_EVT:
1362 return "SDP_AVRC_DISC";
1363 case BTA_AV_AVRC_CLOSE_EVT:
1364 return "AVRC_CLOSE";
1365 case BTA_AV_AVRC_BROWSE_OPEN_EVT:
1366 return "AVRC_BROWSE_OPEN";
1367 case BTA_AV_AVRC_BROWSE_CLOSE_EVT:
1368 return "AVRC_BROWSE_CLOSE";
1369 case BTA_AV_CONN_CHG_EVT:
1370 return "CONN_CHG";
1371 case BTA_AV_DEREG_COMP_EVT:
1372 return "DEREG_COMP";
1373 case BTA_AV_AVDT_RPT_CONN_EVT:
1374 return "RPT_CONN";
1375 case BTA_AV_API_START_EVT:
1376 return "API_START";
1377 case BTA_AV_API_STOP_EVT:
1378 return "API_STOP";
1379 default:
1380 return "unknown";
1381 }
1382 }
1383
bta_debug_av_dump(int fd)1384 void bta_debug_av_dump(int fd) {
1385 dprintf(fd, "\nBTA AV State:\n");
1386 dprintf(fd, " State Machine State: %s\n", bta_av_st_code(bta_av_cb.state));
1387 dprintf(fd, " Link signalling timer: %s\n",
1388 alarm_is_scheduled(bta_av_cb.link_signalling_timer)
1389 ? "Scheduled"
1390 : "Not scheduled");
1391 dprintf(fd, " Accept signalling timer: %s\n",
1392 alarm_is_scheduled(bta_av_cb.accept_signalling_timer)
1393 ? "Scheduled"
1394 : "Not scheduled");
1395 dprintf(fd, " SDP A2DP source handle: %d\n", bta_av_cb.sdp_a2dp_handle);
1396 dprintf(fd, " SDP A2DP sink handle: %d\n", bta_av_cb.sdp_a2dp_snk_handle);
1397 dprintf(fd, " Features: 0x%x\n", bta_av_cb.features);
1398 dprintf(fd, " Security mask: 0x%x\n", bta_av_cb.sec_mask);
1399 dprintf(fd, " SDP handle: %d\n", bta_av_cb.handle);
1400 dprintf(fd, " Disabling: %s\n", bta_av_cb.disabling ? "true" : "false");
1401 dprintf(fd, " SCO occupied: %s\n",
1402 bta_av_cb.sco_occupied ? "true" : "false");
1403 dprintf(fd, " Connected audio channels: %d\n", bta_av_cb.audio_open_cnt);
1404 dprintf(fd, " Connected audio channels mask: 0x%x\n", bta_av_cb.conn_audio);
1405 dprintf(fd, " Streaming audio channels mask: 0x%x\n",
1406 bta_av_cb.audio_streams);
1407 dprintf(fd, " Registered audio channels mask: 0x%x\n", bta_av_cb.reg_audio);
1408 dprintf(fd, " Connected LCBs mask: 0x%x\n", bta_av_cb.conn_lcb);
1409
1410 for (size_t i = 0; i < sizeof(bta_av_cb.lcb) / sizeof(bta_av_cb.lcb[0]);
1411 i++) {
1412 const tBTA_AV_LCB& lcb = bta_av_cb.lcb[i];
1413 dprintf(fd, "\n Link control block: %zu peer: %s\n", i,
1414 lcb.addr.ToString().c_str());
1415 dprintf(fd, " Connected stream handle mask: 0x%x\n", lcb.conn_msk);
1416 dprintf(fd, " Index(+1) to LCB: %d\n", lcb.lidx);
1417 }
1418 for (size_t i = 0; i < BTA_AV_NUM_STRS; i++) {
1419 const tBTA_AV_SCB* p_scb = bta_av_cb.p_scb[i];
1420 if (p_scb == nullptr) {
1421 continue;
1422 }
1423 dprintf(fd, "\n BTA ID: %zu peer: %s\n", i,
1424 p_scb->PeerAddress().ToString().c_str());
1425 dprintf(fd, " SDP discovery started: %s\n",
1426 p_scb->sdp_discovery_started ? "true" : "false");
1427 for (size_t j = 0; j < BTAV_A2DP_CODEC_INDEX_MAX; j++) {
1428 const tBTA_AV_SEP& sep = p_scb->seps[j];
1429 dprintf(fd, " SEP ID: %zu\n", j);
1430 dprintf(fd, " SEP AVDTP handle: %d\n", sep.av_handle);
1431 dprintf(fd, " Local SEP type: %d\n", sep.tsep);
1432 dprintf(fd, " Codec: %s\n", A2DP_CodecName(sep.codec_info));
1433 }
1434 dprintf(fd, " BTA info tag: %d\n", p_scb->q_tag);
1435 dprintf(fd, " API Open peer: %s\n",
1436 p_scb->q_info.open.bd_addr.ToString().c_str());
1437 dprintf(fd, " Use AVRCP: %s\n",
1438 p_scb->q_info.open.use_rc ? "true" : "false");
1439 dprintf(fd, " Security mask: 0x%x\n", p_scb->q_info.open.sec_mask);
1440 dprintf(fd, " Switch result: %d\n", p_scb->q_info.open.switch_res);
1441 dprintf(fd, " Initiator UUID: 0x%x\n", p_scb->q_info.open.uuid);
1442 dprintf(fd, " Saved API Open peer: %s\n",
1443 p_scb->open_api.bd_addr.ToString().c_str());
1444 dprintf(fd, " Use AVRCP: %s\n",
1445 p_scb->open_api.use_rc ? "true" : "false");
1446 dprintf(fd, " Security mask: 0x%x\n", p_scb->open_api.sec_mask);
1447 dprintf(fd, " Switch result: %d\n", p_scb->open_api.switch_res);
1448 dprintf(fd, " Initiator UUID: 0x%x\n", p_scb->open_api.uuid);
1449 // TODO: Print p_scb->sep_info[], cfg, avrc_ct_timer, current_codec ?
1450 dprintf(fd, " L2CAP Channel ID: %d\n", p_scb->l2c_cid);
1451 dprintf(fd, " Stream MTU: %d\n", p_scb->stream_mtu);
1452 dprintf(fd, " AVDTP version: 0x%x\n", p_scb->AvdtpVersion());
1453 dprintf(fd, " Security mask: 0x%x\n", p_scb->sec_mask);
1454 dprintf(fd, " Media type: %d\n", p_scb->media_type);
1455 dprintf(fd, " Congested: %s\n", p_scb->cong ? "true" : "false");
1456 dprintf(fd, " Open status: %d\n", p_scb->open_status);
1457 dprintf(fd, " Channel: %d\n", p_scb->chnl);
1458 dprintf(fd, " BTA handle: 0x%x\n", p_scb->hndl);
1459 dprintf(fd, " Protocol service capabilities mask: 0x%x\n",
1460 p_scb->cur_psc_mask);
1461 dprintf(fd, " AVDTP handle: %d\n", p_scb->avdt_handle);
1462 dprintf(fd, " Stream control block index: %d\n", p_scb->hdi);
1463 dprintf(fd, " State machine state: %s(%d)\n",
1464 bta_av_sst_code(p_scb->state), p_scb->state);
1465 dprintf(fd, " AVDTP label: 0x%x\n", p_scb->avdt_label);
1466 dprintf(fd, " Application ID: %d\n", p_scb->app_id);
1467 dprintf(fd, " Role: 0x%x\n", p_scb->role);
1468 dprintf(fd, " Queued L2CAP buffers: %d\n", p_scb->l2c_bufs);
1469 dprintf(fd, " AVRCP allowed: %s\n", p_scb->use_rc ? "true" : "false");
1470 dprintf(fd, " Stream started: %s\n", p_scb->started ? "true" : "false");
1471 dprintf(fd, " Stream call-out started: %d\n", p_scb->co_started);
1472 dprintf(fd, " AVDTP Reconfig supported: %s\n",
1473 p_scb->recfg_sup ? "true" : "false");
1474 dprintf(fd, " AVDTP Suspend supported: %s\n",
1475 p_scb->suspend_sup ? "true" : "false");
1476 dprintf(fd, " Deregistering: %s\n",
1477 p_scb->deregistering ? "true" : "false");
1478 dprintf(fd, " SCO automatic Suspend: %s\n",
1479 p_scb->sco_suspend ? "true" : "false");
1480 dprintf(fd, " Incoming/outgoing connection collusion mask: 0x%x\n",
1481 p_scb->coll_mask);
1482 dprintf(fd, " Wait mask: 0x%x\n", p_scb->wait);
1483 dprintf(fd, " Don't use RTP header: %s\n",
1484 p_scb->no_rtp_header ? "true" : "false");
1485 dprintf(fd, " Intended UUID of Initiator to connect to: 0x%x\n",
1486 p_scb->uuid_int);
1487 }
1488 }
1489