1 /******************************************************************************
2 *
3 * Copyright (C) 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 <assert.h>
28 #include <string.h>
29
30 #include "bt_target.h"
31 #include "osi/include/log.h"
32
33 #if defined(BTA_AV_INCLUDED) && (BTA_AV_INCLUDED == TRUE)
34 #include "bta_av_co.h"
35 #include "bta_av_int.h"
36 #include "l2c_api.h"
37 #include "l2cdefs.h"
38 #include "utl.h"
39
40 #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE)
41 #include "bta_ar_api.h"
42 #endif
43
44 /*****************************************************************************
45 ** Constants and types
46 *****************************************************************************/
47
48 /* AVDTP protocol timeout values */
49 #define BTIF_AVK_SERVICE_NAME "Advanced Audio Sink"
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 /* state machine states */
69 enum
70 {
71 BTA_AV_INIT_ST,
72 BTA_AV_OPEN_ST
73 };
74
75 /* state machine action enumeration list */
76 enum
77 {
78 BTA_AV_DISABLE,
79 BTA_AV_RC_OPENED,
80 BTA_AV_RC_REMOTE_CMD,
81 BTA_AV_RC_VENDOR_CMD,
82 BTA_AV_RC_VENDOR_RSP,
83 BTA_AV_RC_FREE_RSP,
84 BTA_AV_RC_FREE_MSG,
85 BTA_AV_RC_META_RSP,
86 BTA_AV_RC_MSG,
87 BTA_AV_RC_CLOSE,
88 BTA_AV_NUM_ACTIONS
89 };
90
91 #define BTA_AV_IGNORE BTA_AV_NUM_ACTIONS
92
93 /* type for action functions */
94 typedef void (*tBTA_AV_ACTION)(tBTA_AV_CB *p_cb, tBTA_AV_DATA *p_data);
95
96 /* action functions */
97 const tBTA_AV_ACTION bta_av_action[] =
98 {
99 bta_av_disable,
100 bta_av_rc_opened,
101 bta_av_rc_remote_cmd,
102 bta_av_rc_vendor_cmd,
103 bta_av_rc_vendor_rsp,
104 bta_av_rc_free_rsp,
105 bta_av_rc_free_msg,
106 bta_av_rc_meta_rsp,
107 bta_av_rc_msg,
108 bta_av_rc_close,
109 NULL
110 };
111
112 /* state table information */
113 #define BTA_AV_ACTION_COL 0 /* position of actions */
114 #define BTA_AV_NEXT_STATE 1 /* position of next state */
115 #define BTA_AV_NUM_COLS 2 /* number of columns in state tables */
116
117 /* state table for init state */
118 static const UINT8 bta_av_st_init[][BTA_AV_NUM_COLS] =
119 {
120 /* Event Action 1 Next state */
121 /* API_DISABLE_EVT */ {BTA_AV_DISABLE, BTA_AV_INIT_ST },
122 /* API_REMOTE_CMD_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST },
123 /* API_VENDOR_CMD_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST },
124 /* API_VENDOR_RSP_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST },
125 /* API_META_RSP_EVT */ {BTA_AV_RC_FREE_RSP, BTA_AV_INIT_ST },
126 /* API_RC_CLOSE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST },
127 /* AVRC_OPEN_EVT */ {BTA_AV_RC_OPENED, BTA_AV_OPEN_ST },
128 /* AVRC_MSG_EVT */ {BTA_AV_RC_FREE_MSG, BTA_AV_INIT_ST },
129 /* AVRC_NONE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST },
130 };
131
132 /* state table for open state */
133 static const UINT8 bta_av_st_open[][BTA_AV_NUM_COLS] =
134 {
135 /* Event Action 1 Next state */
136 /* API_DISABLE_EVT */ {BTA_AV_DISABLE, BTA_AV_INIT_ST },
137 /* API_REMOTE_CMD_EVT */ {BTA_AV_RC_REMOTE_CMD, BTA_AV_OPEN_ST },
138 /* API_VENDOR_CMD_EVT */ {BTA_AV_RC_VENDOR_CMD, BTA_AV_OPEN_ST },
139 /* API_VENDOR_RSP_EVT */ {BTA_AV_RC_VENDOR_RSP, BTA_AV_OPEN_ST },
140 /* API_META_RSP_EVT */ {BTA_AV_RC_META_RSP, BTA_AV_OPEN_ST },
141 /* API_RC_CLOSE_EVT */ {BTA_AV_RC_CLOSE, BTA_AV_OPEN_ST },
142 /* AVRC_OPEN_EVT */ {BTA_AV_RC_OPENED, BTA_AV_OPEN_ST },
143 /* AVRC_MSG_EVT */ {BTA_AV_RC_MSG, BTA_AV_OPEN_ST },
144 /* AVRC_NONE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST },
145 };
146
147 /* type for state table */
148 typedef const UINT8 (*tBTA_AV_ST_TBL)[BTA_AV_NUM_COLS];
149
150 /* state table */
151 static const tBTA_AV_ST_TBL bta_av_st_tbl[] =
152 {
153 bta_av_st_init,
154 bta_av_st_open
155 };
156
157 typedef void (*tBTA_AV_NSM_ACT)(tBTA_AV_DATA *p_data);
158 static void bta_av_api_enable(tBTA_AV_DATA *p_data);
159 static void bta_av_api_register(tBTA_AV_DATA *p_data);
160 #if (BTA_AV_SINK_INCLUDED == TRUE)
161 static void bta_av_api_sink_enable(tBTA_AV_DATA *p_data);
162 #endif
163 static void bta_av_ci_data(tBTA_AV_DATA *p_data);
164 #if (AVDT_REPORTING == TRUE)
165 static void bta_av_rpc_conn(tBTA_AV_DATA *p_data);
166 #endif
167 static void bta_av_api_to_ssm(tBTA_AV_DATA *p_data);
168
169 static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, UINT8 id, UINT8
170 app_id, BD_ADDR peer_addr);
171 static void bta_av_sys_rs_cback (tBTA_SYS_CONN_STATUS status,UINT8 id, UINT8 app_id, BD_ADDR peer_addr);
172
173 /* action functions */
174 const tBTA_AV_NSM_ACT bta_av_nsm_act[] =
175 {
176 bta_av_api_enable, /* BTA_AV_API_ENABLE_EVT */
177 bta_av_api_register, /* BTA_AV_API_REGISTER_EVT */
178 bta_av_api_deregister, /* BTA_AV_API_DEREGISTER_EVT */
179 bta_av_api_disconnect, /* BTA_AV_API_DISCONNECT_EVT */
180 bta_av_ci_data, /* BTA_AV_CI_SRC_DATA_READY_EVT */
181 bta_av_sig_chg, /* BTA_AV_SIG_CHG_EVT */
182 bta_av_signalling_timer, /* BTA_AV_SIGNALLING_TIMER_EVT */
183 bta_av_rc_disc_done, /* BTA_AV_SDP_AVRC_DISC_EVT */
184 bta_av_rc_closed, /* BTA_AV_AVRC_CLOSE_EVT */
185 bta_av_conn_chg, /* BTA_AV_CONN_CHG_EVT */
186 bta_av_dereg_comp, /* BTA_AV_DEREG_COMP_EVT */
187 #if (BTA_AV_SINK_INCLUDED == TRUE)
188 bta_av_api_sink_enable, /* BTA_AV_API_SINK_ENABLE_EVT */
189 #endif
190 #if (AVDT_REPORTING == TRUE)
191 bta_av_rpc_conn, /* BTA_AV_AVDT_RPT_CONN_EVT */
192 #endif
193 bta_av_api_to_ssm, /* BTA_AV_API_START_EVT */
194 bta_av_api_to_ssm, /* BTA_AV_API_STOP_EVT */
195 };
196
197 /*****************************************************************************
198 ** Global data
199 *****************************************************************************/
200
201 /* AV control block */
202 #if BTA_DYNAMIC_MEMORY == FALSE
203 tBTA_AV_CB bta_av_cb;
204 #endif
205
206 #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
207 static char *bta_av_st_code(UINT8 state);
208 #endif
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 {
222 /* initialize control block */
223 memset(&bta_av_cb, 0, sizeof(tBTA_AV_CB));
224
225 for (int i = 0; i < BTA_AV_NUM_RCB; i++)
226 bta_av_cb.rcb[i].handle = BTA_AV_RC_HANDLE_NONE;
227
228 bta_av_cb.rc_acp_handle = BTA_AV_RC_HANDLE_NONE;
229
230 /*
231 * TODO: The "disable" event handling is missing - there we need
232 * to alarm_free() the alarms below.
233 */
234 bta_av_cb.link_signalling_timer = alarm_new("bta_av.link_signalling_timer");
235 bta_av_cb.accept_signalling_timer =
236 alarm_new("bta_av.accept_signalling_timer");
237
238 /* store parameters */
239 bta_av_cb.p_cback = p_data->api_enable.p_cback;
240 bta_av_cb.features = p_data->api_enable.features;
241 bta_av_cb.sec_mask = p_data->api_enable.sec_mask;
242
243 tBTA_AV_ENABLE enable;
244 enable.features = bta_av_cb.features;
245
246 /* Register for SCO change event */
247 if (!(bta_av_cb.features & BTA_AV_FEAT_NO_SCO_SSPD))
248 {
249 bta_sys_sco_register(bta_av_sco_chg_cback);
250 }
251
252 /* call callback with enable event */
253 (*bta_av_cb.p_cback)(BTA_AV_ENABLE_EVT, (tBTA_AV *)&enable);
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(BD_ADDR bd_addr)265 static tBTA_AV_SCB * bta_av_addr_to_scb(BD_ADDR bd_addr)
266 {
267 tBTA_AV_SCB * p_scb = NULL;
268 int xx;
269
270 for(xx=0; xx<BTA_AV_NUM_STRS; xx++)
271 {
272 if(bta_av_cb.p_scb[xx])
273 {
274 if(!bdcmp(bd_addr, bta_av_cb.p_scb[xx]->peer_addr))
275 {
276 p_scb = bta_av_cb.p_scb[xx];
277 break;
278 }
279 }
280 }
281 return p_scb;
282 }
283
284 /*******************************************************************************
285 **
286 ** Function bta_av_hndl_to_scb
287 **
288 ** Description find the stream control block by the handle
289 **
290 ** Returns void
291 **
292 *******************************************************************************/
bta_av_hndl_to_scb(UINT16 handle)293 tBTA_AV_SCB * bta_av_hndl_to_scb(UINT16 handle)
294 {
295 tBTA_AV_HNDL hndl = (tBTA_AV_HNDL)handle;
296 tBTA_AV_SCB * p_scb = NULL;
297 UINT8 idx = (hndl & BTA_AV_HNDL_MSK);
298
299 if(idx && (idx <= BTA_AV_NUM_STRS) )
300 {
301 p_scb = bta_av_cb.p_scb[idx-1];
302 }
303 return p_scb;
304 }
305
306 /*******************************************************************************
307 **
308 ** Function bta_av_alloc_scb
309 **
310 ** Description allocate stream control block,
311 ** register the service to stack
312 ** create SDP record
313 **
314 ** Returns void
315 **
316 *******************************************************************************/
bta_av_alloc_scb(tBTA_AV_CHNL chnl)317 static tBTA_AV_SCB * bta_av_alloc_scb(tBTA_AV_CHNL chnl)
318 {
319 tBTA_AV_SCB *p_ret = NULL;
320 int xx;
321 tBTA_AV_STATUS sts = BTA_AV_SUCCESS;
322
323 if(chnl == BTA_AV_CHNL_VIDEO)
324 {
325 if(p_bta_av_cfg->p_act_tbl == NULL || p_bta_av_cfg->p_reg == NULL)
326 {
327 APPL_TRACE_ERROR("Video streaming not supported");
328 sts = BTA_AV_FAIL;
329 }
330 else
331 {
332 /* allow only one Video channel */
333 if(bta_av_cb.reg_video)
334 {
335 APPL_TRACE_ERROR("Already registered");
336 sts = BTA_AV_FAIL;
337 }
338 }
339 }
340 else if(chnl != BTA_AV_CHNL_AUDIO)
341 {
342 APPL_TRACE_ERROR("bad channel: %d", chnl);
343 sts = BTA_AV_FAIL;
344 }
345
346 if(sts == BTA_AV_SUCCESS)
347 {
348 for(xx=0; xx<BTA_AV_NUM_STRS; xx++)
349 {
350 if(bta_av_cb.p_scb[xx] == NULL)
351 {
352 /* found an empty spot */
353 p_ret = (tBTA_AV_SCB *)osi_calloc(sizeof(tBTA_AV_SCB));
354 p_ret->rc_handle = BTA_AV_RC_HANDLE_NONE;
355 p_ret->chnl = chnl;
356 p_ret->hndl = (tBTA_AV_HNDL)((xx + 1) | chnl);
357 p_ret->hdi = xx;
358 p_ret->a2d_list = list_new(NULL);
359 p_ret->avrc_ct_timer = alarm_new("bta_av.avrc_ct_timer");
360 bta_av_cb.p_scb[xx] = p_ret;
361 break;
362 }
363 }
364 }
365 return p_ret;
366 }
367
368 /*******************************************************************************
369 *******************************************************************************/
bta_av_conn_cback(UINT8 handle,BD_ADDR bd_addr,UINT8 event,tAVDT_CTRL * p_data)370 void bta_av_conn_cback(UINT8 handle, BD_ADDR bd_addr, UINT8 event, tAVDT_CTRL *p_data)
371 {
372 UINT16 evt = 0;
373 tBTA_AV_SCB *p_scb = NULL;
374 UNUSED(handle);
375
376 #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE)
377 if (event == BTA_AR_AVDT_CONN_EVT ||
378 event == AVDT_CONNECT_IND_EVT || event == AVDT_DISCONNECT_IND_EVT)
379 #else
380 if (event == AVDT_CONNECT_IND_EVT || event == AVDT_DISCONNECT_IND_EVT)
381 #endif
382 {
383 evt = BTA_AV_SIG_CHG_EVT;
384 if(AVDT_DISCONNECT_IND_EVT == event)
385 p_scb = bta_av_addr_to_scb(bd_addr);
386 #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
387 else if (AVDT_CONNECT_IND_EVT == event)
388 {
389 APPL_TRACE_DEBUG("CONN_IND is ACP:%d", p_data->hdr.err_param);
390 }
391 #endif
392
393 tBTA_AV_STR_MSG *p_msg =
394 (tBTA_AV_STR_MSG *)osi_malloc(sizeof(tBTA_AV_STR_MSG));
395 p_msg->hdr.event = evt;
396 p_msg->hdr.layer_specific = event;
397 p_msg->hdr.offset = p_data->hdr.err_param;
398 bdcpy(p_msg->bd_addr, bd_addr);
399 #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
400 if(p_scb) {
401 APPL_TRACE_DEBUG("scb hndl x%x, role x%x", p_scb->hndl, p_scb->role);
402 }
403 #endif
404 APPL_TRACE_DEBUG("conn_cback bd_addr:%02x-%02x-%02x-%02x-%02x-%02x",
405 bd_addr[0], bd_addr[1],
406 bd_addr[2], bd_addr[3],
407 bd_addr[4], bd_addr[5]);
408 bta_sys_sendmsg(p_msg);
409 }
410 }
411
412 #if AVDT_REPORTING == TRUE
413 /*******************************************************************************
414 **
415 ** Function bta_av_a2dp_report_cback
416 **
417 ** Description A2DP report callback.
418 **
419 ** Returns void
420 **
421 *******************************************************************************/
bta_av_a2dp_report_cback(UINT8 handle,AVDT_REPORT_TYPE type,tAVDT_REPORT_DATA * p_data)422 static void bta_av_a2dp_report_cback(UINT8 handle, AVDT_REPORT_TYPE type,
423 tAVDT_REPORT_DATA *p_data)
424 {
425 UNUSED(handle);
426 UNUSED(type);
427 UNUSED(p_data);
428 /* Do not need to handle report data for now.
429 * This empty function is here for conformance reasons. */
430 }
431 #endif
432
433 #if (BTA_AV_SINK_INCLUDED == TRUE)
434 /*******************************************************************************
435 **
436 ** Function bta_av_api_sink_enable
437 **
438 ** Description activate, deactive A2DP Sink,
439 **
440 ** Returns void
441 **
442 *******************************************************************************/
443
bta_av_api_sink_enable(tBTA_AV_DATA * p_data)444 static void bta_av_api_sink_enable(tBTA_AV_DATA *p_data)
445 {
446 UINT16 activate_sink = 0;
447 activate_sink = p_data->hdr.layer_specific;
448 APPL_TRACE_DEBUG("bta_av_api_sink_enable %d ", activate_sink)
449 char p_service_name[BTA_SERVICE_NAME_LEN+1];
450 strlcpy(p_service_name, BTIF_AVK_SERVICE_NAME, BTA_SERVICE_NAME_LEN);
451
452 if (activate_sink)
453 {
454 AVDT_SINK_Activate();
455 if (bta_av_cb.sdp_a2d_snk_handle == 0)
456 {
457 bta_av_cb.sdp_a2d_snk_handle = SDP_CreateRecord();
458 A2D_AddRecord(UUID_SERVCLASS_AUDIO_SINK, p_service_name, NULL,
459 A2D_SUPF_PLAYER, bta_av_cb.sdp_a2d_snk_handle);
460 bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SINK);
461 }
462 }
463 else
464 {
465 AVDT_SINK_Deactivate();
466 if (bta_av_cb.sdp_a2d_snk_handle != 0)
467 {
468 SDP_DeleteRecord(bta_av_cb.sdp_a2d_snk_handle);
469 bta_av_cb.sdp_a2d_snk_handle = 0;
470 bta_sys_remove_uuid(UUID_SERVCLASS_AUDIO_SINK);
471 }
472 }
473 }
474 #endif
475 /*******************************************************************************
476 **
477 ** Function bta_av_api_register
478 **
479 ** Description allocate stream control block,
480 ** register the service to stack
481 ** create SDP record
482 **
483 ** Returns void
484 **
485 *******************************************************************************/
bta_av_api_register(tBTA_AV_DATA * p_data)486 static void bta_av_api_register(tBTA_AV_DATA *p_data)
487 {
488 tBTA_AV_REGISTER registr;
489 tBTA_AV_SCB *p_scb; /* stream control block */
490 tAVDT_REG reg;
491 tAVDT_CS cs;
492 char *p_service_name;
493 tBTA_AV_CODEC codec_type;
494 tBTA_UTL_COD cod;
495 UINT8 index = 0;
496
497 memset(&cs,0,sizeof(tAVDT_CS));
498
499 registr.status = BTA_AV_FAIL_RESOURCES;
500 registr.app_id = p_data->api_reg.app_id;
501 registr.chnl = (tBTA_AV_CHNL)p_data->hdr.layer_specific;
502
503 UINT16 profile_initialized = p_data->api_reg.service_uuid;
504 if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK)
505 {
506 p_bta_av_cfg = (tBTA_AV_CFG *) &bta_avk_cfg;
507 }
508 else if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE)
509 {
510 p_bta_av_cfg = (tBTA_AV_CFG *) &bta_av_cfg;
511 }
512
513 do
514 {
515 p_scb = bta_av_alloc_scb(registr.chnl);
516 if(p_scb == NULL)
517 {
518 APPL_TRACE_ERROR("failed to alloc SCB");
519 break;
520 }
521
522 registr.hndl = p_scb->hndl;
523 p_scb->app_id = registr.app_id;
524
525 /* initialize the stream control block */
526 registr.status = BTA_AV_SUCCESS;
527
528 if((bta_av_cb.reg_audio + bta_av_cb.reg_video) == 0)
529 {
530 /* the first channel registered. register to AVDTP */
531 reg.ctrl_mtu = p_bta_av_cfg->sig_mtu;
532 reg.ret_tout = BTA_AV_RET_TOUT;
533 reg.sig_tout = BTA_AV_SIG_TOUT;
534 reg.idle_tout = BTA_AV_IDLE_TOUT;
535 reg.sec_mask = bta_av_cb.sec_mask;
536 #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE)
537 bta_ar_reg_avdt(®, bta_av_conn_cback, BTA_ID_AV);
538 #endif
539 bta_sys_role_chg_register(&bta_av_sys_rs_cback);
540
541 /* create remote control TG service if required */
542 if (bta_av_cb.features & (BTA_AV_FEAT_RCTG))
543 {
544 /* register with no authorization; let AVDTP use authorization instead */
545 #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE)
546 #if (BTA_AV_WITH_AVCTP_AUTHORIZATION == TRUE)
547 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
548 bta_av_cb.sec_mask, BTA_ID_AV);
549 #else
550 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
551 (UINT8)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)), BTA_ID_AV);
552 #endif
553 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE)
554 {
555 bta_ar_reg_avrc(UUID_SERVCLASS_AV_REM_CTRL_TARGET, "AV Remote Control Target",
556 NULL, p_bta_av_cfg->avrc_tg_cat, BTA_ID_AV,
557 (bta_av_cb.features & BTA_AV_FEAT_BROWSE), AVRC_REV_1_3);
558 }
559 else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK)
560 {
561 // Initialize AVRCP1.4 to provide Absolute Volume control.
562 bta_ar_reg_avrc(UUID_SERVCLASS_AV_REM_CTRL_TARGET, "AV Remote Control Target",
563 NULL, p_bta_av_cfg->avrc_tg_cat, BTA_ID_AV,
564 (bta_av_cb.features & BTA_AV_FEAT_BROWSE), AVRC_REV_1_4);
565 }
566 #endif
567 }
568
569 /* Set the Capturing service class bit */
570 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE)
571 cod.service = BTM_COD_SERVICE_CAPTURING;
572 else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK)
573 cod.service = BTM_COD_SERVICE_RENDERING;
574 utl_set_device_class(&cod, BTA_UTL_SET_COD_SERVICE_CLASS);
575 } /* if 1st channel */
576
577 /* get stream configuration and create stream */
578 /* memset(&cs.cfg,0,sizeof(tAVDT_CFG)); */
579 cs.cfg.num_codec = 1;
580
581
582 /*
583 * memset of cs takes care setting call back pointers to null.
584 cs.p_data_cback = NULL;
585 cs.p_report_cback = NULL;
586 */
587 cs.nsc_mask = AVDT_NSC_RECONFIG |
588 ((bta_av_cb.features & BTA_AV_FEAT_PROTECT) ? 0 : AVDT_NSC_SECURITY);
589 APPL_TRACE_DEBUG("nsc_mask: 0x%x", cs.nsc_mask);
590
591 if (p_data->api_reg.p_service_name[0] == 0)
592 {
593 p_service_name = NULL;
594 }
595 else
596 {
597 p_service_name = p_data->api_reg.p_service_name;
598 }
599
600 p_scb->suspend_sup = TRUE;
601 p_scb->recfg_sup = TRUE;
602 p_scb->skip_sdp = FALSE;
603
604 cs.p_ctrl_cback = bta_av_dt_cback[p_scb->hdi];
605 if(registr.chnl == BTA_AV_CHNL_AUDIO)
606 {
607 /* set up the audio stream control block */
608 p_scb->p_act_tbl = (const tBTA_AV_ACT *)bta_av_a2d_action;
609 p_scb->p_cos = &bta_av_a2d_cos;
610 p_scb->media_type= AVDT_MEDIA_AUDIO;
611 cs.cfg.psc_mask = AVDT_PSC_TRANS;
612 cs.media_type = AVDT_MEDIA_AUDIO;
613 cs.mtu = p_bta_av_cfg->audio_mtu;
614 cs.flush_to = L2CAP_DEFAULT_FLUSH_TO;
615 #if AVDT_REPORTING == TRUE
616 if(bta_av_cb.features & BTA_AV_FEAT_REPORT)
617 {
618 cs.cfg.psc_mask |= AVDT_PSC_REPORT;
619 cs.p_report_cback = bta_av_a2dp_report_cback;
620 #if AVDT_MULTIPLEXING == TRUE
621 cs.cfg.mux_tsid_report = 2;
622 #endif
623 }
624 #endif
625 if(bta_av_cb.features & BTA_AV_FEAT_DELAY_RPT)
626 cs.cfg.psc_mask |= AVDT_PSC_DELAY_RPT;
627
628 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE)
629 {
630 cs.tsep = AVDT_TSEP_SRC;
631 index = 0;
632 }
633 else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK)
634 {
635 cs.tsep = AVDT_TSEP_SNK;
636 cs.p_data_cback = bta_av_stream_data_cback;
637 index = 1;
638 }
639
640 /* Initialize Handles to zero */
641 for (int xx=0; xx < BTA_AV_MAX_SEPS; xx++)
642 {
643 p_scb->seps[xx].av_handle = 0;
644 }
645
646 /* keep the configuration in the stream control block */
647 memcpy(&p_scb->cfg, &cs.cfg, sizeof(tAVDT_CFG));
648 if ((*bta_av_a2d_cos.init)(&codec_type, cs.cfg.codec_info,
649 &cs.cfg.num_protect, cs.cfg.protect_info, index) == TRUE)
650 {
651 if(AVDT_CreateStream(&p_scb->seps[index].av_handle, &cs) == AVDT_SUCCESS)
652 {
653 p_scb->seps[index].codec_type = codec_type;
654 p_scb->seps[index].tsep = cs.tsep;
655 if(cs.tsep == AVDT_TSEP_SNK)
656 p_scb->seps[index].p_app_data_cback = p_data->api_reg.p_app_data_cback;
657 else
658 p_scb->seps[index].p_app_data_cback = NULL; /* In case of A2DP SOURCE we don't need a callback to handle media packets */
659
660 }
661 }
662
663 if(!bta_av_cb.reg_audio)
664 {
665 bta_av_cb.sdp_a2d_handle = 0;
666 #if (BTA_AV_SINK_INCLUDED == TRUE)
667 bta_av_cb.sdp_a2d_snk_handle = 0;
668 #endif
669 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE)
670 {
671 /* create the SDP records on the 1st audio channel */
672 bta_av_cb.sdp_a2d_handle = SDP_CreateRecord();
673 A2D_AddRecord(UUID_SERVCLASS_AUDIO_SOURCE, p_service_name, NULL,
674 A2D_SUPF_PLAYER, bta_av_cb.sdp_a2d_handle);
675 bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SOURCE);
676 }
677 else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK)
678 {
679 #if (BTA_AV_SINK_INCLUDED == TRUE)
680 bta_av_cb.sdp_a2d_snk_handle = SDP_CreateRecord();
681 A2D_AddRecord(UUID_SERVCLASS_AUDIO_SINK, p_service_name, NULL,
682 A2D_SUPF_PLAYER, bta_av_cb.sdp_a2d_snk_handle);
683 bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SINK);
684 #endif
685 }
686 /* start listening when A2DP is registered */
687 if (bta_av_cb.features & BTA_AV_FEAT_RCTG)
688 bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1);
689
690 /* if the AV and AVK are both supported, it cannot support the CT role */
691 if (bta_av_cb.features & (BTA_AV_FEAT_RCCT))
692 {
693 /* if TG is not supported, we need to register to AVCT now */
694 if ((bta_av_cb.features & (BTA_AV_FEAT_RCTG)) == 0)
695 {
696 #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE)
697 #if (BTA_AV_WITH_AVCTP_AUTHORIZATION == TRUE)
698 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
699 bta_av_cb.sec_mask, BTA_ID_AV);
700 #else
701 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu,
702 (UINT8)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)), BTA_ID_AV);
703 #endif
704 #endif
705 bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1);
706 }
707 #if( defined BTA_AR_INCLUDED ) && (BTA_AR_INCLUDED == TRUE)
708 /* create an SDP record as AVRC CT. We create 1.3 for SOURCE
709 * because we rely on feature bits being scanned by external
710 * devices more than the profile version itself.
711 */
712 if ((profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) ||
713 (profile_initialized == UUID_SERVCLASS_AUDIO_SINK))
714 {
715 bta_ar_reg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, NULL, NULL,
716 p_bta_av_cfg->avrc_ct_cat, BTA_ID_AV,
717 (bta_av_cb.features & BTA_AV_FEAT_BROWSE), AVRC_REV_1_3);
718 }
719 #endif
720 }
721 }
722 bta_av_cb.reg_audio |= BTA_AV_HNDL_TO_MSK(p_scb->hdi);
723 APPL_TRACE_DEBUG("reg_audio: 0x%x",bta_av_cb.reg_audio);
724 }
725 else
726 {
727 bta_av_cb.reg_video = BTA_AV_HNDL_TO_MSK(p_scb->hdi);
728 bta_av_cb.sdp_vdp_handle = SDP_CreateRecord();
729 /* register the video channel */
730 /* no need to verify the function pointer here. it's verified prior */
731 (*p_bta_av_cfg->p_reg)(&cs, p_service_name, p_scb);
732 }
733 } while (0);
734
735 /* call callback with register event */
736 (*bta_av_cb.p_cback)(BTA_AV_REGISTER_EVT, (tBTA_AV *)®istr);
737 }
738
739 /*******************************************************************************
740 **
741 ** Function bta_av_api_deregister
742 **
743 ** Description de-register a channel
744 **
745 **
746 ** Returns void
747 **
748 *******************************************************************************/
bta_av_api_deregister(tBTA_AV_DATA * p_data)749 void bta_av_api_deregister(tBTA_AV_DATA *p_data)
750 {
751 tBTA_AV_SCB *p_scb = bta_av_hndl_to_scb(p_data->hdr.layer_specific);
752
753 if(p_scb)
754 {
755 p_scb->deregistring = TRUE;
756 bta_av_ssm_execute(p_scb, BTA_AV_API_CLOSE_EVT, p_data);
757 }
758 else
759 {
760 bta_av_dereg_comp(p_data);
761 }
762 }
763
764 /*******************************************************************************
765 **
766 ** Function bta_av_ci_data
767 **
768 ** Description forward the BTA_AV_CI_SRC_DATA_READY_EVT to stream state machine
769 **
770 **
771 ** Returns void
772 **
773 *******************************************************************************/
bta_av_ci_data(tBTA_AV_DATA * p_data)774 static void bta_av_ci_data(tBTA_AV_DATA *p_data)
775 {
776 tBTA_AV_SCB *p_scb;
777 int i;
778 UINT8 chnl = (UINT8)p_data->hdr.layer_specific;
779
780 for( i=0; i < BTA_AV_NUM_STRS; i++ )
781 {
782 p_scb = bta_av_cb.p_scb[i];
783
784 if(p_scb && p_scb->chnl == chnl)
785 {
786 bta_av_ssm_execute(p_scb, BTA_AV_SRC_DATA_READY_EVT, p_data);
787 }
788 }
789 }
790
791 /*******************************************************************************
792 **
793 ** Function bta_av_rpc_conn
794 **
795 ** Description report report channel open
796 **
797 ** Returns void
798 **
799 *******************************************************************************/
800 #if (AVDT_REPORTING == TRUE)
bta_av_rpc_conn(tBTA_AV_DATA * p_data)801 static void bta_av_rpc_conn(tBTA_AV_DATA *p_data)
802 {
803 UNUSED(p_data);
804 }
805 #endif
806
807 /*******************************************************************************
808 **
809 ** Function bta_av_api_to_ssm
810 **
811 ** Description forward the API request to stream state machine
812 **
813 **
814 ** Returns void
815 **
816 *******************************************************************************/
bta_av_api_to_ssm(tBTA_AV_DATA * p_data)817 static void bta_av_api_to_ssm(tBTA_AV_DATA *p_data)
818 {
819 int xx;
820 UINT16 event = p_data->hdr.event - BTA_AV_FIRST_A2S_API_EVT + BTA_AV_FIRST_A2S_SSM_EVT;
821
822 for(xx=0; xx<BTA_AV_NUM_STRS; xx++)
823 {
824 bta_av_ssm_execute(bta_av_cb.p_scb[xx], event, p_data);
825 }
826 }
827
828 /*******************************************************************************
829 **
830 ** Function bta_av_chk_start
831 **
832 ** Description if this is audio channel, check if more than one audio
833 ** channel is connected & already started.
834 **
835 ** Returns TRUE, if need api_start
836 **
837 *******************************************************************************/
bta_av_chk_start(tBTA_AV_SCB * p_scb)838 BOOLEAN bta_av_chk_start(tBTA_AV_SCB *p_scb)
839 {
840 BOOLEAN start = FALSE;
841 tBTA_AV_SCB *p_scbi;
842 int i;
843
844 if(p_scb->chnl == BTA_AV_CHNL_AUDIO)
845 {
846 if ((bta_av_cb.audio_open_cnt >= 2) &&
847 ((0 == (p_scb->role & BTA_AV_ROLE_AD_ACP)) || /* Outgoing connection or */
848 (bta_av_cb.features & BTA_AV_FEAT_ACP_START))) /* auto-starting option */
849 {
850 /* more than one audio channel is connected */
851 /* if this is the 2nd stream as ACP, give INT a chance to issue the START command */
852 for(i=0; i<BTA_AV_NUM_STRS; i++)
853 {
854 p_scbi = bta_av_cb.p_scb[i];
855 if(p_scbi && p_scbi->chnl == BTA_AV_CHNL_AUDIO && p_scbi->co_started)
856 {
857 start = TRUE;
858 /* may need to update the flush timeout of this already started stream */
859 if(p_scbi->co_started != bta_av_cb.audio_open_cnt)
860 {
861 p_scbi->co_started = bta_av_cb.audio_open_cnt;
862 L2CA_SetFlushTimeout(p_scbi->peer_addr, p_bta_av_cfg->p_audio_flush_to[p_scbi->co_started - 1] );
863 }
864 }
865 }
866 }
867 }
868 return start;
869 }
870
871 /*******************************************************************************
872 **
873 ** Function bta_av_restore_switch
874 **
875 ** Description assume that the caller of this function already makes
876 ** sure that there's only one ACL connection left
877 **
878 ** Returns void
879 **
880 *******************************************************************************/
bta_av_restore_switch(void)881 void bta_av_restore_switch (void)
882 {
883 tBTA_AV_CB *p_cb = &bta_av_cb;
884 int i;
885 UINT8 mask;
886
887 APPL_TRACE_DEBUG("reg_audio: 0x%x",bta_av_cb.reg_audio);
888 for(i=0; i<BTA_AV_NUM_STRS; i++)
889 {
890 mask = BTA_AV_HNDL_TO_MSK(i);
891 if (p_cb->conn_audio == mask)
892 {
893 if (p_cb->p_scb[i])
894 {
895 bta_sys_set_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH, p_cb->p_scb[i]->peer_addr);
896 }
897 break;
898 }
899 }
900 }
901
902 /*******************************************************************************
903 **
904 ** Function bta_av_sys_rs_cback
905 **
906 ** Description Receives the role change event from dm
907 **
908 ** Returns (BTA_SYS_ROLE_CHANGE, new_role, hci_status, p_bda)
909 **
910 *******************************************************************************/
bta_av_sys_rs_cback(tBTA_SYS_CONN_STATUS status,UINT8 id,UINT8 app_id,BD_ADDR peer_addr)911 static void bta_av_sys_rs_cback (tBTA_SYS_CONN_STATUS status,UINT8 id, UINT8 app_id, BD_ADDR peer_addr)
912 {
913 int i;
914 tBTA_AV_SCB *p_scb = NULL;
915 UINT8 cur_role;
916 UINT8 peer_idx = 0;
917 UNUSED(status);
918
919 APPL_TRACE_DEBUG("bta_av_sys_rs_cback: %d", bta_av_cb.rs_idx);
920 for(i=0; i<BTA_AV_NUM_STRS; i++)
921 {
922 /* loop through all the SCBs to find matching peer addresses and report the role change event */
923 /* note that more than one SCB (a2dp & vdp) maybe waiting for this event */
924 p_scb = bta_av_cb.p_scb[i];
925 if (p_scb && (bdcmp (peer_addr, p_scb->peer_addr) == 0)) {
926 tBTA_AV_ROLE_RES *p_buf =
927 (tBTA_AV_ROLE_RES *)osi_malloc(sizeof(tBTA_AV_ROLE_RES));
928 APPL_TRACE_DEBUG("new_role:%d, hci_status:x%x hndl: x%x", id, app_id, p_scb->hndl);
929 /*
930 if ((id != BTM_ROLE_MASTER) && (app_id != HCI_SUCCESS))
931 {
932 bta_sys_set_policy(BTA_ID_AV, (HCI_ENABLE_MASTER_SLAVE_SWITCH|HCI_ENABLE_SNIFF_MODE), p_scb->peer_addr);
933 }
934 */
935 p_buf->hdr.event = BTA_AV_ROLE_CHANGE_EVT;
936 p_buf->hdr.layer_specific = p_scb->hndl;
937 p_buf->new_role = id;
938 p_buf->hci_status = app_id;
939 bta_sys_sendmsg(p_buf);
940
941 peer_idx = p_scb->hdi + 1; /* Handle index for the peer_addr */
942 }
943 }
944
945 /* restore role switch policy, if role switch failed */
946 if ((HCI_SUCCESS != app_id) &&
947 (BTM_GetRole (peer_addr, &cur_role) == BTM_SUCCESS) &&
948 (cur_role == BTM_ROLE_SLAVE) )
949 {
950 bta_sys_set_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH, peer_addr);
951 }
952
953 /* if BTA_AvOpen() was called for other device, which caused the role switch of the peer_addr, */
954 /* we need to continue opening process for the BTA_AvOpen(). */
955 if ((bta_av_cb.rs_idx != 0) && (bta_av_cb.rs_idx != peer_idx))
956 {
957 if ((bta_av_cb.rs_idx -1) < BTA_AV_NUM_STRS)
958 {
959 p_scb = bta_av_cb.p_scb[bta_av_cb.rs_idx - 1];
960 }
961 if (p_scb && p_scb->q_tag == BTA_AV_Q_TAG_OPEN)
962 {
963 APPL_TRACE_DEBUG ("bta_av_sys_rs_cback: rs_idx(%d), hndl:x%x q_tag: %d",
964 bta_av_cb.rs_idx, p_scb->hndl, p_scb->q_tag);
965
966 if(HCI_SUCCESS == app_id || HCI_ERR_NO_CONNECTION == app_id)
967 p_scb->q_info.open.switch_res = BTA_AV_RS_OK;
968 else
969 p_scb->q_info.open.switch_res = BTA_AV_RS_FAIL;
970
971 /* Continue av open process */
972 bta_av_do_disc_a2d (p_scb, (tBTA_AV_DATA *)&(p_scb->q_info.open));
973 }
974
975 bta_av_cb.rs_idx = 0;
976 }
977 }
978
979 /*******************************************************************************
980 **
981 ** Function bta_av_sco_chg_cback
982 **
983 ** Description receive & process the SCO connection up/down event from sys.
984 ** call setup also triggers this callback, to suspend av before sco
985 ** activity happens, or to resume av once call ends.
986 **
987 ** Returns void
988 **
989 *******************************************************************************/
bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status,UINT8 id,UINT8 app_id,BD_ADDR peer_addr)990 static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, UINT8 id, UINT8
991 app_id, BD_ADDR peer_addr)
992 {
993 tBTA_AV_SCB *p_scb;
994 int i;
995 tBTA_AV_API_STOP stop;
996 UNUSED(app_id);
997 UNUSED(peer_addr);
998
999 APPL_TRACE_DEBUG("bta_av_sco_chg_cback:%d status:%d", id, status);
1000 if(id)
1001 {
1002 bta_av_cb.sco_occupied = TRUE;
1003
1004 /* either BTA_SYS_SCO_OPEN or BTA_SYS_SCO_CLOSE with remaining active SCO */
1005 for(i=0; i<BTA_AV_NUM_STRS; i++)
1006 {
1007 p_scb = bta_av_cb.p_scb[i];
1008
1009 if( p_scb && p_scb->co_started && (p_scb->sco_suspend == FALSE))
1010 {
1011 APPL_TRACE_DEBUG("suspending scb:%d", i);
1012 /* scb is used and started, not suspended automatically */
1013 p_scb->sco_suspend = TRUE;
1014 stop.flush = FALSE;
1015 stop.suspend = TRUE;
1016 bta_av_ssm_execute(p_scb, BTA_AV_AP_STOP_EVT, (tBTA_AV_DATA *)&stop);
1017 }
1018 }
1019 }
1020 else
1021 {
1022 bta_av_cb.sco_occupied = FALSE;
1023
1024 for(i=0; i<BTA_AV_NUM_STRS; i++)
1025 {
1026 p_scb = bta_av_cb.p_scb[i];
1027
1028 if( p_scb && p_scb->sco_suspend ) /* scb is used and suspended for SCO */
1029 {
1030 APPL_TRACE_DEBUG("starting scb:%d", i);
1031 bta_av_ssm_execute(p_scb, BTA_AV_AP_START_EVT, NULL);
1032 }
1033 }
1034 }
1035 }
1036
1037 /*******************************************************************************
1038 **
1039 ** Function bta_av_switch_if_needed
1040 **
1041 ** Description This function checks if there is another existing AV
1042 ** channel that is local as slave role.
1043 ** If so, role switch and remove it from link policy.
1044 **
1045 ** Returns TRUE, if role switch is done
1046 **
1047 *******************************************************************************/
bta_av_switch_if_needed(tBTA_AV_SCB * p_scb)1048 BOOLEAN bta_av_switch_if_needed(tBTA_AV_SCB *p_scb)
1049 {
1050 UINT8 role;
1051 BOOLEAN needed = FALSE;
1052 tBTA_AV_SCB *p_scbi;
1053 int i;
1054 UINT8 mask;
1055
1056 for(i=0; i<BTA_AV_NUM_STRS; i++)
1057 {
1058 mask = BTA_AV_HNDL_TO_MSK(i);
1059 p_scbi = bta_av_cb.p_scb[i];
1060 if( p_scbi && (p_scb->hdi != i) && /* not the original channel */
1061 ((bta_av_cb.conn_audio & mask) ||/* connected audio */
1062 (bta_av_cb.conn_video & mask)) ) /* connected video */
1063 {
1064 BTM_GetRole(p_scbi->peer_addr, &role);
1065 /* this channel is open - clear the role switch link policy for this link */
1066 if(BTM_ROLE_MASTER != role)
1067 {
1068 if (bta_av_cb.features & BTA_AV_FEAT_MASTER)
1069 bta_sys_clear_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH, p_scbi->peer_addr);
1070 if (BTM_CMD_STARTED != BTM_SwitchRole(p_scbi->peer_addr, BTM_ROLE_MASTER, NULL))
1071 {
1072 /* can not switch role on SCBI
1073 * start the timer on SCB - because this function is ONLY called when SCB gets API_OPEN */
1074 bta_sys_start_timer(p_scb->avrc_ct_timer,
1075 BTA_AV_RS_TIME_VAL,
1076 BTA_AV_AVRC_TIMER_EVT, p_scb->hndl);
1077 }
1078 needed = TRUE;
1079 /* mark the original channel as waiting for RS result */
1080 bta_av_cb.rs_idx = p_scb->hdi + 1;
1081 break;
1082 }
1083 }
1084 }
1085 return needed;
1086 }
1087
1088 /*******************************************************************************
1089 **
1090 ** Function bta_av_link_role_ok
1091 **
1092 ** Description This function checks if the SCB has existing ACL connection
1093 ** If so, check if the link role fits the requirements.
1094 **
1095 ** Returns TRUE, if role is ok
1096 **
1097 *******************************************************************************/
bta_av_link_role_ok(tBTA_AV_SCB * p_scb,UINT8 bits)1098 BOOLEAN bta_av_link_role_ok(tBTA_AV_SCB *p_scb, UINT8 bits)
1099 {
1100 UINT8 role;
1101 BOOLEAN is_ok = TRUE;
1102
1103 if (BTM_GetRole(p_scb->peer_addr, &role) == BTM_SUCCESS)
1104 {
1105 LOG_INFO(LOG_TAG, "%s hndl:x%x role:%d conn_audio:x%x bits:%d features:x%x",
1106 __func__, p_scb->hndl, role, bta_av_cb.conn_audio, bits,
1107 bta_av_cb.features);
1108 if (BTM_ROLE_MASTER != role && (A2D_BitsSet(bta_av_cb.conn_audio) > bits || (bta_av_cb.features & BTA_AV_FEAT_MASTER)))
1109 {
1110 if (bta_av_cb.features & BTA_AV_FEAT_MASTER)
1111 bta_sys_clear_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH, p_scb->peer_addr);
1112
1113 if (BTM_CMD_STARTED != BTM_SwitchRole(p_scb->peer_addr, BTM_ROLE_MASTER, NULL))
1114 {
1115 /* can not switch role on SCB - start the timer on SCB */
1116 }
1117 is_ok = FALSE;
1118 p_scb->wait |= BTA_AV_WAIT_ROLE_SW_RES_START;
1119
1120 }
1121 }
1122
1123 return is_ok;
1124 }
1125
1126 /*******************************************************************************
1127 **
1128 ** Function bta_av_chk_mtu
1129 **
1130 ** Description if this is audio channel, check if more than one audio
1131 ** channel is connected.
1132 **
1133 ** Returns The smallest mtu of the connected audio channels
1134 **
1135 *******************************************************************************/
bta_av_chk_mtu(tBTA_AV_SCB * p_scb,UINT16 mtu)1136 UINT16 bta_av_chk_mtu(tBTA_AV_SCB *p_scb, UINT16 mtu)
1137 {
1138 UINT16 ret_mtu = BTA_AV_MAX_A2DP_MTU;
1139 tBTA_AV_SCB *p_scbi;
1140 int i;
1141 UINT8 mask;
1142 UNUSED(mtu);
1143
1144 /* TODO_MV mess with the mtu according to the number of EDR/non-EDR headsets */
1145 if(p_scb->chnl == BTA_AV_CHNL_AUDIO)
1146 {
1147 if(bta_av_cb.audio_open_cnt >= 2)
1148 {
1149 /* more than one audio channel is connected */
1150 for(i=0; i<BTA_AV_NUM_STRS; i++)
1151 {
1152 p_scbi = bta_av_cb.p_scb[i];
1153 if((p_scb != p_scbi) && p_scbi && (p_scbi->chnl == BTA_AV_CHNL_AUDIO) )
1154 {
1155 mask = BTA_AV_HNDL_TO_MSK(i);
1156 APPL_TRACE_DEBUG("[%d] mtu: %d, mask:0x%x",
1157 i, p_scbi->stream_mtu, mask);
1158 if(bta_av_cb.conn_audio & mask)
1159 {
1160 if(ret_mtu > p_scbi->stream_mtu)
1161 ret_mtu = p_scbi->stream_mtu;
1162 }
1163 }
1164 }
1165 }
1166 APPL_TRACE_DEBUG("bta_av_chk_mtu audio count:%d, conn_audio:0x%x, ret:%d",
1167 bta_av_cb.audio_open_cnt, bta_av_cb.conn_audio, ret_mtu);
1168 }
1169 return ret_mtu;
1170 }
1171
1172 /*******************************************************************************
1173 **
1174 ** Function bta_av_dup_audio_buf
1175 **
1176 ** Description dup the audio data to the q_info.a2d of other audio channels
1177 **
1178 ** Returns void
1179 **
1180 *******************************************************************************/
bta_av_dup_audio_buf(tBTA_AV_SCB * p_scb,BT_HDR * p_buf)1181 void bta_av_dup_audio_buf(tBTA_AV_SCB *p_scb, BT_HDR *p_buf)
1182 {
1183 /* Test whether there is more than one audio channel connected */
1184 if ((p_buf == NULL) || (bta_av_cb.audio_open_cnt < 2))
1185 return;
1186
1187 UINT16 copy_size = BT_HDR_SIZE + p_buf->len + p_buf->offset;
1188 for (int i = 0; i < BTA_AV_NUM_STRS; i++) {
1189 tBTA_AV_SCB *p_scbi = bta_av_cb.p_scb[i];
1190
1191 if (i == p_scb->hdi)
1192 continue; /* Ignore the original channel */
1193 if ((p_scbi == NULL) || !p_scbi->co_started)
1194 continue; /* Ignore if SCB is not used or started */
1195 if (!(bta_av_cb.conn_audio & BTA_AV_HNDL_TO_MSK(i)))
1196 continue; /* Audio is not connected */
1197
1198 /* Enqueue the data */
1199 BT_HDR *p_new = (BT_HDR *)osi_malloc(copy_size);
1200 memcpy(p_new, p_buf, copy_size);
1201 list_append(p_scbi->a2d_list, p_new);
1202
1203 if (list_length(p_scbi->a2d_list) > p_bta_av_cfg->audio_mqs) {
1204 // Drop the oldest packet
1205 bta_av_co_audio_drop(p_scbi->hndl);
1206 BT_HDR *p_buf_drop = list_front(p_scbi->a2d_list);
1207 list_remove(p_scbi->a2d_list, p_buf_drop);
1208 osi_free(p_buf_drop);
1209 }
1210 }
1211 }
1212
1213 /*******************************************************************************
1214 **
1215 ** Function bta_av_sm_execute
1216 **
1217 ** Description State machine event handling function for AV
1218 **
1219 **
1220 ** Returns void
1221 **
1222 *******************************************************************************/
bta_av_sm_execute(tBTA_AV_CB * p_cb,UINT16 event,tBTA_AV_DATA * p_data)1223 void bta_av_sm_execute(tBTA_AV_CB *p_cb, UINT16 event, tBTA_AV_DATA *p_data)
1224 {
1225 tBTA_AV_ST_TBL state_table;
1226 UINT8 action;
1227
1228 #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
1229 APPL_TRACE_EVENT("AV event=0x%x(%s) state=%d(%s)",
1230 event, bta_av_evt_code(event), p_cb->state, bta_av_st_code(p_cb->state));
1231 #else
1232 APPL_TRACE_EVENT("AV event=0x%x state=%d", event, p_cb->state);
1233 #endif
1234
1235 /* look up the state table for the current state */
1236 state_table = bta_av_st_tbl[p_cb->state];
1237
1238 event &= 0x00FF;
1239
1240 /* set next state */
1241 p_cb->state = state_table[event][BTA_AV_NEXT_STATE];
1242 APPL_TRACE_EVENT("next state=%d", p_cb->state);
1243
1244 /* execute action functions */
1245 if ((action = state_table[event][BTA_AV_ACTION_COL]) != BTA_AV_IGNORE)
1246 {
1247 (*bta_av_action[action])(p_cb, p_data);
1248 }
1249 }
1250
1251 /*******************************************************************************
1252 **
1253 ** Function bta_av_hdl_event
1254 **
1255 ** Description Advanced audio/video main event handling function.
1256 **
1257 **
1258 ** Returns BOOLEAN
1259 **
1260 *******************************************************************************/
bta_av_hdl_event(BT_HDR * p_msg)1261 BOOLEAN bta_av_hdl_event(BT_HDR *p_msg)
1262 {
1263 UINT16 event = p_msg->event;
1264 UINT16 first_event = BTA_AV_FIRST_NSM_EVT;
1265
1266 if (event > BTA_AV_LAST_EVT)
1267 {
1268 return TRUE; /* to free p_msg */
1269 }
1270
1271 if(event >= first_event)
1272 {
1273 #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
1274 APPL_TRACE_VERBOSE("AV nsm event=0x%x(%s)", event, bta_av_evt_code(event));
1275 #else
1276 APPL_TRACE_VERBOSE("AV nsm event=0x%x", event);
1277 #endif
1278 /* non state machine events */
1279 (*bta_av_nsm_act[event - BTA_AV_FIRST_NSM_EVT]) ((tBTA_AV_DATA *) p_msg);
1280 }
1281 else if (event >= BTA_AV_FIRST_SM_EVT && event <= BTA_AV_LAST_SM_EVT)
1282 {
1283 #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
1284 APPL_TRACE_VERBOSE("AV sm event=0x%x(%s)", event, bta_av_evt_code(event));
1285 #else
1286 APPL_TRACE_VERBOSE("AV sm event=0x%x", event);
1287 #endif
1288 /* state machine events */
1289 bta_av_sm_execute(&bta_av_cb, p_msg->event, (tBTA_AV_DATA *) p_msg);
1290 }
1291 else
1292 {
1293 APPL_TRACE_VERBOSE("handle=0x%x", p_msg->layer_specific);
1294 /* stream state machine events */
1295 bta_av_ssm_execute( bta_av_hndl_to_scb(p_msg->layer_specific),
1296 p_msg->event, (tBTA_AV_DATA *) p_msg);
1297 }
1298 return TRUE;
1299 }
1300
1301 /*****************************************************************************
1302 ** Debug Functions
1303 *****************************************************************************/
1304 #if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
1305 /*******************************************************************************
1306 **
1307 ** Function bta_av_st_code
1308 **
1309 ** Description
1310 **
1311 ** Returns char *
1312 **
1313 *******************************************************************************/
bta_av_st_code(UINT8 state)1314 static char *bta_av_st_code(UINT8 state)
1315 {
1316 switch(state)
1317 {
1318 case BTA_AV_INIT_ST: return "INIT";
1319 case BTA_AV_OPEN_ST: return "OPEN";
1320 default: return "unknown";
1321 }
1322 }
1323 /*******************************************************************************
1324 **
1325 ** Function bta_av_evt_code
1326 **
1327 ** Description
1328 **
1329 ** Returns char *
1330 **
1331 *******************************************************************************/
bta_av_evt_code(UINT16 evt_code)1332 char *bta_av_evt_code(UINT16 evt_code)
1333 {
1334 switch(evt_code)
1335 {
1336 case BTA_AV_API_DISABLE_EVT: return "API_DISABLE";
1337 case BTA_AV_API_REMOTE_CMD_EVT: return "API_REMOTE_CMD";
1338 case BTA_AV_API_VENDOR_CMD_EVT: return "API_VENDOR_CMD";
1339 case BTA_AV_API_VENDOR_RSP_EVT: return "API_VENDOR_RSP";
1340 case BTA_AV_API_META_RSP_EVT: return "API_META_RSP_EVT";
1341 case BTA_AV_API_RC_CLOSE_EVT: return "API_RC_CLOSE";
1342 case BTA_AV_AVRC_OPEN_EVT: return "AVRC_OPEN";
1343 case BTA_AV_AVRC_MSG_EVT: return "AVRC_MSG";
1344 case BTA_AV_AVRC_NONE_EVT: return "AVRC_NONE";
1345
1346 case BTA_AV_API_OPEN_EVT: return "API_OPEN";
1347 case BTA_AV_API_CLOSE_EVT: return "API_CLOSE";
1348 case BTA_AV_AP_START_EVT: return "AP_START";
1349 case BTA_AV_AP_STOP_EVT: return "AP_STOP";
1350 case BTA_AV_API_RECONFIG_EVT: return "API_RECONFIG";
1351 case BTA_AV_API_PROTECT_REQ_EVT: return "API_PROTECT_REQ";
1352 case BTA_AV_API_PROTECT_RSP_EVT: return "API_PROTECT_RSP";
1353 case BTA_AV_API_RC_OPEN_EVT: return "API_RC_OPEN";
1354 case BTA_AV_SRC_DATA_READY_EVT: return "SRC_DATA_READY";
1355 case BTA_AV_CI_SETCONFIG_OK_EVT: return "CI_SETCONFIG_OK";
1356 case BTA_AV_CI_SETCONFIG_FAIL_EVT: return "CI_SETCONFIG_FAIL";
1357 case BTA_AV_SDP_DISC_OK_EVT: return "SDP_DISC_OK";
1358 case BTA_AV_SDP_DISC_FAIL_EVT: return "SDP_DISC_FAIL";
1359 case BTA_AV_STR_DISC_OK_EVT: return "STR_DISC_OK";
1360 case BTA_AV_STR_DISC_FAIL_EVT: return "STR_DISC_FAIL";
1361 case BTA_AV_STR_GETCAP_OK_EVT: return "STR_GETCAP_OK";
1362 case BTA_AV_STR_GETCAP_FAIL_EVT: return "STR_GETCAP_FAIL";
1363 case BTA_AV_STR_OPEN_OK_EVT: return "STR_OPEN_OK";
1364 case BTA_AV_STR_OPEN_FAIL_EVT: return "STR_OPEN_FAIL";
1365 case BTA_AV_STR_START_OK_EVT: return "STR_START_OK";
1366 case BTA_AV_STR_START_FAIL_EVT: return "STR_START_FAIL";
1367 case BTA_AV_STR_CLOSE_EVT: return "STR_CLOSE";
1368 case BTA_AV_STR_CONFIG_IND_EVT: return "STR_CONFIG_IND";
1369 case BTA_AV_STR_SECURITY_IND_EVT: return "STR_SECURITY_IND";
1370 case BTA_AV_STR_SECURITY_CFM_EVT: return "STR_SECURITY_CFM";
1371 case BTA_AV_STR_WRITE_CFM_EVT: return "STR_WRITE_CFM";
1372 case BTA_AV_STR_SUSPEND_CFM_EVT: return "STR_SUSPEND_CFM";
1373 case BTA_AV_STR_RECONFIG_CFM_EVT: return "STR_RECONFIG_CFM";
1374 case BTA_AV_AVRC_TIMER_EVT: return "AVRC_TIMER";
1375 case BTA_AV_AVDT_CONNECT_EVT: return "AVDT_CONNECT";
1376 case BTA_AV_AVDT_DISCONNECT_EVT: return "AVDT_DISCONNECT";
1377 case BTA_AV_ROLE_CHANGE_EVT: return "ROLE_CHANGE";
1378 case BTA_AV_AVDT_DELAY_RPT_EVT: return "AVDT_DELAY_RPT";
1379 case BTA_AV_ACP_CONNECT_EVT: return "ACP_CONNECT";
1380
1381 case BTA_AV_API_ENABLE_EVT: return "API_ENABLE";
1382 case BTA_AV_API_REGISTER_EVT: return "API_REG";
1383 case BTA_AV_API_DEREGISTER_EVT: return "API_DEREG";
1384 case BTA_AV_API_DISCONNECT_EVT: return "API_DISCNT";
1385 case BTA_AV_CI_SRC_DATA_READY_EVT: return "CI_DATA_READY";
1386 case BTA_AV_SIG_CHG_EVT: return "SIG_CHG";
1387 case BTA_AV_SIGNALLING_TIMER_EVT: return "SIGNALLING_TIMER";
1388 case BTA_AV_SDP_AVRC_DISC_EVT: return "SDP_AVRC_DISC";
1389 case BTA_AV_AVRC_CLOSE_EVT: return "AVRC_CLOSE";
1390 case BTA_AV_CONN_CHG_EVT: return "CONN_CHG";
1391 case BTA_AV_DEREG_COMP_EVT: return "DEREG_COMP";
1392 #if (BTA_AV_SINK_INCLUDED == TRUE)
1393 case BTA_AV_API_SINK_ENABLE_EVT: return "SINK_ENABLE";
1394 #endif
1395 #if (AVDT_REPORTING == TRUE)
1396 case BTA_AV_AVDT_RPT_CONN_EVT: return "RPT_CONN";
1397 #endif
1398 case BTA_AV_API_START_EVT: return "API_START";
1399 case BTA_AV_API_STOP_EVT: return "API_STOP";
1400 default: return "unknown";
1401 }
1402 }
1403 #endif
1404
1405 #endif /* BTA_AV_INCLUDED */
1406