1/******************************************************************************
2 *
3 *  Copyright (C) 2004-2016 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 file contains action functions for advanced audio/video main state
22 *  machine.
23 *
24 ******************************************************************************/
25
26#define LOG_TAG "bt_bta_av"
27
28#include "bt_target.h"
29
30#include <string.h>
31
32#include "avdt_api.h"
33#include "bta_av_api.h"
34#include "bta_av_int.h"
35#include "l2c_api.h"
36#include "osi/include/list.h"
37#include "osi/include/log.h"
38#include "osi/include/osi.h"
39#include "osi/include/properties.h"
40#include "utl.h"
41
42#if (BTA_AR_INCLUDED == TRUE)
43#include "bta_ar_api.h"
44#endif
45
46/*****************************************************************************
47 *  Constants
48 ****************************************************************************/
49/* the timeout to wait for open req after setconfig for incoming connections */
50#ifndef BTA_AV_SIGNALLING_TIMEOUT_MS
51#define BTA_AV_SIGNALLING_TIMEOUT_MS (8 * 1000) /* 8 seconds */
52#endif
53
54/* Time to wait for signalling from SNK when it is initiated from SNK. */
55/* If not, we will start signalling from SRC. */
56#ifndef BTA_AV_ACCEPT_SIGNALLING_TIMEOUT_MS
57#define BTA_AV_ACCEPT_SIGNALLING_TIMEOUT_MS (2 * 1000) /* 2 seconds */
58#endif
59
60extern fixed_queue_t* btu_bta_alarm_queue;
61
62static void bta_av_accept_signalling_timer_cback(void* data);
63
64#ifndef AVRC_MIN_META_CMD_LEN
65#define AVRC_MIN_META_CMD_LEN 20
66#endif
67
68/*******************************************************************************
69 *
70 * Function         bta_av_get_rcb_by_shdl
71 *
72 * Description      find the RCB associated with the given SCB handle.
73 *
74 * Returns          tBTA_AV_RCB
75 *
76 ******************************************************************************/
77tBTA_AV_RCB* bta_av_get_rcb_by_shdl(uint8_t shdl) {
78  tBTA_AV_RCB* p_rcb = NULL;
79  int i;
80
81  for (i = 0; i < BTA_AV_NUM_RCB; i++) {
82    if (bta_av_cb.rcb[i].shdl == shdl &&
83        bta_av_cb.rcb[i].handle != BTA_AV_RC_HANDLE_NONE) {
84      p_rcb = &bta_av_cb.rcb[i];
85      break;
86    }
87  }
88  return p_rcb;
89}
90#define BTA_AV_STS_NO_RSP 0xFF /* a number not used by tAVRC_STS */
91
92/*******************************************************************************
93 *
94 * Function         bta_av_del_rc
95 *
96 * Description      delete the given AVRC handle.
97 *
98 * Returns          void
99 *
100 ******************************************************************************/
101void bta_av_del_rc(tBTA_AV_RCB* p_rcb) {
102  tBTA_AV_SCB* p_scb;
103  uint8_t rc_handle; /* connected AVRCP handle */
104
105  p_scb = NULL;
106  if (p_rcb->handle != BTA_AV_RC_HANDLE_NONE) {
107    if (p_rcb->shdl) {
108      /* Validate array index*/
109      if ((p_rcb->shdl - 1) < BTA_AV_NUM_STRS) {
110        p_scb = bta_av_cb.p_scb[p_rcb->shdl - 1];
111      }
112      if (p_scb) {
113        APPL_TRACE_DEBUG("bta_av_del_rc shdl:%d, srch:%d rc_handle:%d",
114                         p_rcb->shdl, p_scb->rc_handle, p_rcb->handle);
115        if (p_scb->rc_handle == p_rcb->handle)
116          p_scb->rc_handle = BTA_AV_RC_HANDLE_NONE;
117        /* just in case the RC timer is active
118        if (bta_av_cb.features & BTA_AV_FEAT_RCCT && p_scb->chnl ==
119        BTA_AV_CHNL_AUDIO) */
120        alarm_cancel(p_scb->avrc_ct_timer);
121      }
122    }
123
124    APPL_TRACE_EVENT(
125        "bta_av_del_rc  handle: %d status=0x%x, rc_acp_handle:%d, idx:%d",
126        p_rcb->handle, p_rcb->status, bta_av_cb.rc_acp_handle,
127        bta_av_cb.rc_acp_idx);
128    rc_handle = p_rcb->handle;
129    if (!(p_rcb->status & BTA_AV_RC_CONN_MASK) ||
130        ((p_rcb->status & BTA_AV_RC_ROLE_MASK) == BTA_AV_RC_ROLE_INT)) {
131      p_rcb->status = 0;
132      p_rcb->handle = BTA_AV_RC_HANDLE_NONE;
133      p_rcb->shdl = 0;
134      p_rcb->lidx = 0;
135    }
136    /* else ACP && connected. do not clear the handle yet */
137    AVRC_Close(rc_handle);
138    if (rc_handle == bta_av_cb.rc_acp_handle)
139      bta_av_cb.rc_acp_handle = BTA_AV_RC_HANDLE_NONE;
140    APPL_TRACE_EVENT(
141        "end del_rc handle: %d status=0x%x, rc_acp_handle:%d, lidx:%d",
142        p_rcb->handle, p_rcb->status, bta_av_cb.rc_acp_handle, p_rcb->lidx);
143  }
144}
145
146/*******************************************************************************
147 *
148 * Function         bta_av_close_all_rc
149 *
150 * Description      close the all AVRC handle.
151 *
152 * Returns          void
153 *
154 ******************************************************************************/
155static void bta_av_close_all_rc(tBTA_AV_CB* p_cb) {
156  int i;
157
158  for (i = 0; i < BTA_AV_NUM_RCB; i++) {
159    if ((p_cb->disabling == true) || (bta_av_cb.rcb[i].shdl != 0))
160      bta_av_del_rc(&bta_av_cb.rcb[i]);
161  }
162}
163
164/*******************************************************************************
165 *
166 * Function         bta_av_del_sdp_rec
167 *
168 * Description      delete the given SDP record handle.
169 *
170 * Returns          void
171 *
172 ******************************************************************************/
173static void bta_av_del_sdp_rec(uint32_t* p_sdp_handle) {
174  if (*p_sdp_handle != 0) {
175    SDP_DeleteRecord(*p_sdp_handle);
176    *p_sdp_handle = 0;
177  }
178}
179
180/*******************************************************************************
181 *
182 * Function         bta_av_avrc_sdp_cback
183 *
184 * Description      AVRCP service discovery callback.
185 *
186 * Returns          void
187 *
188 ******************************************************************************/
189static void bta_av_avrc_sdp_cback(UNUSED_ATTR uint16_t status) {
190  BT_HDR* p_msg = (BT_HDR*)osi_malloc(sizeof(BT_HDR));
191
192  p_msg->event = BTA_AV_SDP_AVRC_DISC_EVT;
193
194  bta_sys_sendmsg(p_msg);
195}
196
197/*******************************************************************************
198 *
199 * Function         bta_av_rc_ctrl_cback
200 *
201 * Description      AVRCP control callback.
202 *
203 * Returns          void
204 *
205 ******************************************************************************/
206static void bta_av_rc_ctrl_cback(uint8_t handle, uint8_t event,
207                                 UNUSED_ATTR uint16_t result,
208                                 BD_ADDR peer_addr) {
209  uint16_t msg_event = 0;
210
211  APPL_TRACE_EVENT("%s handle: %d event=0x%x", __func__, handle, event);
212  if (event == AVRC_OPEN_IND_EVT) {
213    /* save handle of opened connection
214    bta_av_cb.rc_handle = handle;*/
215
216    msg_event = BTA_AV_AVRC_OPEN_EVT;
217  } else if (event == AVRC_CLOSE_IND_EVT) {
218    msg_event = BTA_AV_AVRC_CLOSE_EVT;
219  } else if (event == AVRC_BROWSE_OPEN_IND_EVT) {
220    msg_event = BTA_AV_AVRC_BROWSE_OPEN_EVT;
221  } else if (event == AVRC_BROWSE_CLOSE_IND_EVT) {
222    msg_event = BTA_AV_AVRC_BROWSE_CLOSE_EVT;
223  }
224
225  if (msg_event) {
226    tBTA_AV_RC_CONN_CHG* p_msg =
227        (tBTA_AV_RC_CONN_CHG*)osi_malloc(sizeof(tBTA_AV_RC_CONN_CHG));
228    p_msg->hdr.event = msg_event;
229    p_msg->handle = handle;
230    if (peer_addr) bdcpy(p_msg->peer_addr, peer_addr);
231    bta_sys_sendmsg(p_msg);
232  }
233}
234
235/*******************************************************************************
236 *
237 * Function         bta_av_rc_msg_cback
238 *
239 * Description      AVRCP message callback.
240 *
241 * Returns          void
242 *
243 ******************************************************************************/
244static void bta_av_rc_msg_cback(uint8_t handle, uint8_t label, uint8_t opcode,
245                                tAVRC_MSG* p_msg) {
246  uint8_t* p_data_src = NULL;
247  uint16_t data_len = 0;
248
249  APPL_TRACE_DEBUG("%s handle: %u opcode=0x%x", __func__, handle, opcode);
250
251  /* Copy avrc packet into BTA message buffer (for sending to BTA state machine)
252   */
253
254  /* Get size of payload data  (for vendor and passthrough messages only; for
255   * browsing
256   * messages, use zero-copy) */
257  if (opcode == AVRC_OP_VENDOR && p_msg->vendor.p_vendor_data != NULL) {
258    p_data_src = p_msg->vendor.p_vendor_data;
259    data_len = (uint16_t)p_msg->vendor.vendor_len;
260  } else if (opcode == AVRC_OP_PASS_THRU && p_msg->pass.p_pass_data != NULL) {
261    p_data_src = p_msg->pass.p_pass_data;
262    data_len = (uint16_t)p_msg->pass.pass_len;
263  }
264
265  /* Create a copy of the message */
266  tBTA_AV_RC_MSG* p_buf =
267      (tBTA_AV_RC_MSG*)osi_malloc(sizeof(tBTA_AV_RC_MSG) + data_len);
268
269  p_buf->hdr.event = BTA_AV_AVRC_MSG_EVT;
270  p_buf->handle = handle;
271  p_buf->label = label;
272  p_buf->opcode = opcode;
273  memcpy(&p_buf->msg, p_msg, sizeof(tAVRC_MSG));
274  /* Copy the data payload, and set the pointer to it */
275  if (p_data_src != NULL) {
276    uint8_t* p_data_dst = (uint8_t*)(p_buf + 1);
277    memcpy(p_data_dst, p_data_src, data_len);
278
279    /* Update bta message buffer to point to payload data */
280    /* (Note AVRC_OP_BROWSING uses zero-copy: p_buf->msg.browse.p_browse_data
281     * already points to original avrc buffer) */
282    if (opcode == AVRC_OP_VENDOR)
283      p_buf->msg.vendor.p_vendor_data = p_data_dst;
284    else if (opcode == AVRC_OP_PASS_THRU)
285      p_buf->msg.pass.p_pass_data = p_data_dst;
286  }
287
288  if (opcode == AVRC_OP_BROWSE) {
289    /* set p_pkt to NULL, so avrc would not free the buffer */
290    p_msg->browse.p_browse_pkt = NULL;
291  }
292
293  bta_sys_sendmsg(p_buf);
294}
295
296/*******************************************************************************
297 *
298 * Function         bta_av_rc_create
299 *
300 * Description      alloc RCB and call AVRC_Open
301 *
302 * Returns          the created rc handle
303 *
304 ******************************************************************************/
305uint8_t bta_av_rc_create(tBTA_AV_CB* p_cb, uint8_t role, uint8_t shdl,
306                         uint8_t lidx) {
307  tAVRC_CONN_CB ccb;
308  BD_ADDR_PTR bda = (BD_ADDR_PTR)bd_addr_any;
309  uint8_t status = BTA_AV_RC_ROLE_ACP;
310  tBTA_AV_SCB* p_scb = p_cb->p_scb[shdl - 1];
311  int i;
312  uint8_t rc_handle;
313  tBTA_AV_RCB* p_rcb;
314
315  if (role == AVCT_INT) {
316    bda = p_scb->peer_addr;
317    status = BTA_AV_RC_ROLE_INT;
318  } else {
319    p_rcb = bta_av_get_rcb_by_shdl(shdl);
320    if (p_rcb != NULL) {
321      APPL_TRACE_ERROR("bta_av_rc_create ACP handle exist for shdl:%d", shdl);
322      return p_rcb->handle;
323    }
324  }
325
326  ccb.p_ctrl_cback = bta_av_rc_ctrl_cback;
327  ccb.p_msg_cback = bta_av_rc_msg_cback;
328  ccb.company_id = p_bta_av_cfg->company_id;
329  ccb.conn = role;
330  /* note: BTA_AV_FEAT_RCTG = AVRC_CT_TARGET, BTA_AV_FEAT_RCCT = AVRC_CT_CONTROL
331   */
332  ccb.control = p_cb->features & (BTA_AV_FEAT_RCTG | BTA_AV_FEAT_RCCT |
333                                  BTA_AV_FEAT_METADATA | AVRC_CT_PASSIVE);
334
335  if (AVRC_Open(&rc_handle, &ccb, bda) != AVRC_SUCCESS)
336    return BTA_AV_RC_HANDLE_NONE;
337
338  i = rc_handle;
339  p_rcb = &p_cb->rcb[i];
340
341  if (p_rcb->handle != BTA_AV_RC_HANDLE_NONE) {
342    APPL_TRACE_ERROR("bta_av_rc_create found duplicated handle:%d", rc_handle);
343  }
344
345  p_rcb->handle = rc_handle;
346  p_rcb->status = status;
347  p_rcb->shdl = shdl;
348  p_rcb->lidx = lidx;
349  p_rcb->peer_features = 0;
350  if (lidx == (BTA_AV_NUM_LINKS + 1)) {
351    /* this LIDX is reserved for the AVRCP ACP connection */
352    p_cb->rc_acp_handle = p_rcb->handle;
353    p_cb->rc_acp_idx = (i + 1);
354    APPL_TRACE_DEBUG("rc_acp_handle:%d idx:%d", p_cb->rc_acp_handle,
355                     p_cb->rc_acp_idx);
356  }
357  APPL_TRACE_DEBUG(
358      "create %d, role: %d, shdl:%d, rc_handle:%d, lidx:%d, status:0x%x", i,
359      role, shdl, p_rcb->handle, lidx, p_rcb->status);
360
361  return rc_handle;
362}
363
364/*******************************************************************************
365 *
366 * Function         bta_av_valid_group_navi_msg
367 *
368 * Description      Check if it is Group Navigation Msg for Metadata
369 *
370 * Returns          BTA_AV_RSP_ACCEPT or BTA_AV_RSP_NOT_IMPL.
371 *
372 ******************************************************************************/
373static tBTA_AV_CODE bta_av_group_navi_supported(uint8_t len, uint8_t* p_data,
374                                                bool is_inquiry) {
375  tBTA_AV_CODE ret = BTA_AV_RSP_NOT_IMPL;
376  uint8_t* p_ptr = p_data;
377  uint16_t u16;
378  uint32_t u32;
379
380  if (p_bta_av_cfg->avrc_group && len == BTA_GROUP_NAVI_MSG_OP_DATA_LEN) {
381    BTA_AV_BE_STREAM_TO_CO_ID(u32, p_ptr);
382    BE_STREAM_TO_UINT16(u16, p_ptr);
383
384    if (u32 == AVRC_CO_METADATA) {
385      if (is_inquiry) {
386        if (u16 <= AVRC_PDU_PREV_GROUP) ret = BTA_AV_RSP_IMPL_STBL;
387      } else {
388        if (u16 <= AVRC_PDU_PREV_GROUP)
389          ret = BTA_AV_RSP_ACCEPT;
390        else
391          ret = BTA_AV_RSP_REJ;
392      }
393    }
394  }
395
396  return ret;
397}
398
399/*******************************************************************************
400 *
401 * Function         bta_av_op_supported
402 *
403 * Description      Check if remote control operation is supported.
404 *
405 * Returns          BTA_AV_RSP_ACCEPT of supported, BTA_AV_RSP_NOT_IMPL if not.
406 *
407 ******************************************************************************/
408static tBTA_AV_CODE bta_av_op_supported(tBTA_AV_RC rc_id, bool is_inquiry) {
409  tBTA_AV_CODE ret_code = BTA_AV_RSP_NOT_IMPL;
410
411  if (p_bta_av_rc_id) {
412    if (is_inquiry) {
413      if (p_bta_av_rc_id[rc_id >> 4] & (1 << (rc_id & 0x0F))) {
414        ret_code = BTA_AV_RSP_IMPL_STBL;
415      }
416    } else {
417      if (p_bta_av_rc_id[rc_id >> 4] & (1 << (rc_id & 0x0F))) {
418        ret_code = BTA_AV_RSP_ACCEPT;
419      } else if ((p_bta_av_cfg->rc_pass_rsp == BTA_AV_RSP_INTERIM) &&
420                 p_bta_av_rc_id_ac) {
421        if (p_bta_av_rc_id_ac[rc_id >> 4] & (1 << (rc_id & 0x0F))) {
422          ret_code = BTA_AV_RSP_INTERIM;
423        }
424      }
425    }
426  }
427  return ret_code;
428}
429
430/*******************************************************************************
431 *
432 * Function         bta_av_find_lcb
433 *
434 * Description      Given BD_addr, find the associated LCB.
435 *
436 * Returns          NULL, if not found.
437 *
438 ******************************************************************************/
439tBTA_AV_LCB* bta_av_find_lcb(BD_ADDR addr, uint8_t op) {
440  tBTA_AV_CB* p_cb = &bta_av_cb;
441  int xx;
442  uint8_t mask;
443  tBTA_AV_LCB* p_lcb = NULL;
444
445  for (xx = 0; xx < BTA_AV_NUM_LINKS; xx++) {
446    mask = 1 << xx; /* the used mask for this lcb */
447    if ((mask & p_cb->conn_lcb) && 0 == (bdcmp(p_cb->lcb[xx].addr, addr))) {
448      p_lcb = &p_cb->lcb[xx];
449      if (op == BTA_AV_LCB_FREE) {
450        p_cb->conn_lcb &= ~mask; /* clear the connect mask */
451        APPL_TRACE_DEBUG("conn_lcb: 0x%x", p_cb->conn_lcb);
452      }
453      break;
454    }
455  }
456  return p_lcb;
457}
458
459/*******************************************************************************
460 *
461 * Function         bta_av_rc_opened
462 *
463 * Description      Set AVRCP state to opened.
464 *
465 * Returns          void
466 *
467 ******************************************************************************/
468void bta_av_rc_opened(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data) {
469  tBTA_AV_RC_OPEN rc_open;
470  tBTA_AV_SCB* p_scb;
471  int i;
472  uint8_t shdl = 0;
473  tBTA_AV_LCB* p_lcb;
474  tBTA_AV_RCB* p_rcb;
475  uint8_t tmp;
476  uint8_t disc = 0;
477
478  /* find the SCB & stop the timer */
479  for (i = 0; i < BTA_AV_NUM_STRS; i++) {
480    p_scb = p_cb->p_scb[i];
481    if (p_scb && bdcmp(p_scb->peer_addr, p_data->rc_conn_chg.peer_addr) == 0) {
482      p_scb->rc_handle = p_data->rc_conn_chg.handle;
483      APPL_TRACE_DEBUG("bta_av_rc_opened shdl:%d, srch %d", i + 1,
484                       p_scb->rc_handle);
485      shdl = i + 1;
486      LOG_INFO(LOG_TAG, "%s allow incoming AVRCP connections:%d", __func__,
487               p_scb->use_rc);
488      alarm_cancel(p_scb->avrc_ct_timer);
489      disc = p_scb->hndl;
490      break;
491    }
492  }
493
494  i = p_data->rc_conn_chg.handle;
495  if (p_cb->rcb[i].handle == BTA_AV_RC_HANDLE_NONE) {
496    APPL_TRACE_ERROR("not a valid handle:%d any more", i);
497    return;
498  }
499
500  APPL_TRACE_DEBUG("%s local features %d peer features %d", __func__,
501                   p_cb->features, p_cb->rcb[i].peer_features);
502
503  /* listen to browsing channel when the connection is open,
504   * if peer initiated AVRCP connection and local device supports browsing
505   * channel */
506  AVRC_OpenBrowse(p_data->rc_conn_chg.handle, AVCT_ACP);
507
508  if (p_cb->rcb[i].lidx == (BTA_AV_NUM_LINKS + 1) && shdl != 0) {
509    /* rc is opened on the RC only ACP channel, but is for a specific
510     * SCB -> need to switch RCBs */
511    p_rcb = bta_av_get_rcb_by_shdl(shdl);
512    if (p_rcb) {
513      p_rcb->shdl = p_cb->rcb[i].shdl;
514      tmp = p_rcb->lidx;
515      p_rcb->lidx = p_cb->rcb[i].lidx;
516      p_cb->rcb[i].lidx = tmp;
517      p_cb->rc_acp_handle = p_rcb->handle;
518      p_cb->rc_acp_idx = (p_rcb - p_cb->rcb) + 1;
519      APPL_TRACE_DEBUG("switching RCB rc_acp_handle:%d idx:%d",
520                       p_cb->rc_acp_handle, p_cb->rc_acp_idx);
521    }
522  }
523
524  p_cb->rcb[i].shdl = shdl;
525  rc_open.rc_handle = i;
526  APPL_TRACE_ERROR("bta_av_rc_opened rcb[%d] shdl:%d lidx:%d/%d", i, shdl,
527                   p_cb->rcb[i].lidx, p_cb->lcb[BTA_AV_NUM_LINKS].lidx);
528  p_cb->rcb[i].status |= BTA_AV_RC_CONN_MASK;
529
530  if (!shdl && 0 == p_cb->lcb[BTA_AV_NUM_LINKS].lidx) {
531    /* no associated SCB -> connected to an RC only device
532     * update the index to the extra LCB */
533    p_lcb = &p_cb->lcb[BTA_AV_NUM_LINKS];
534    bdcpy(p_lcb->addr, p_data->rc_conn_chg.peer_addr);
535    APPL_TRACE_DEBUG("rc_only bd_addr:%02x-%02x-%02x-%02x-%02x-%02x",
536                     p_lcb->addr[0], p_lcb->addr[1], p_lcb->addr[2],
537                     p_lcb->addr[3], p_lcb->addr[4], p_lcb->addr[5]);
538    p_lcb->lidx = BTA_AV_NUM_LINKS + 1;
539    p_cb->rcb[i].lidx = p_lcb->lidx;
540    p_lcb->conn_msk = 1;
541    APPL_TRACE_ERROR("rcb[%d].lidx=%d, lcb.conn_msk=x%x", i, p_cb->rcb[i].lidx,
542                     p_lcb->conn_msk);
543    disc = p_data->rc_conn_chg.handle | BTA_AV_CHNL_MSK;
544  }
545
546  bdcpy(rc_open.peer_addr, p_data->rc_conn_chg.peer_addr);
547  rc_open.peer_features = p_cb->rcb[i].peer_features;
548  rc_open.status = BTA_AV_SUCCESS;
549  APPL_TRACE_DEBUG("%s local features:x%x peer_features:x%x", __func__,
550                   p_cb->features, rc_open.peer_features);
551  if (rc_open.peer_features == 0) {
552    /* we have not done SDP on peer RC capabilities.
553     * peer must have initiated the RC connection */
554    if (p_cb->features & BTA_AV_FEAT_RCCT)
555      rc_open.peer_features |= BTA_AV_FEAT_RCTG;
556    if (p_cb->features & BTA_AV_FEAT_RCTG)
557      rc_open.peer_features |= BTA_AV_FEAT_RCCT;
558
559    bta_av_rc_disc(disc);
560  }
561  (*p_cb->p_cback)(BTA_AV_RC_OPEN_EVT, (tBTA_AV*)&rc_open);
562
563  /* if local initiated AVRCP connection and both peer and locals device support
564   * browsing channel, open the browsing channel now
565   * TODO (sanketa): Some TG would not broadcast browse feature hence check
566   * inter-op. */
567  if ((p_cb->features & BTA_AV_FEAT_BROWSE) &&
568      (rc_open.peer_features & BTA_AV_FEAT_BROWSE) &&
569      ((p_cb->rcb[i].status & BTA_AV_RC_ROLE_MASK) == BTA_AV_RC_ROLE_INT)) {
570    APPL_TRACE_DEBUG("%s opening AVRC Browse channel", __func__);
571    AVRC_OpenBrowse(p_data->rc_conn_chg.handle, AVCT_INT);
572  }
573}
574
575/*******************************************************************************
576 *
577 * Function         bta_av_rc_remote_cmd
578 *
579 * Description      Send an AVRCP remote control command.
580 *
581 * Returns          void
582 *
583 ******************************************************************************/
584void bta_av_rc_remote_cmd(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data) {
585  tBTA_AV_RCB* p_rcb;
586  if (p_cb->features & BTA_AV_FEAT_RCCT) {
587    if (p_data->hdr.layer_specific < BTA_AV_NUM_RCB) {
588      p_rcb = &p_cb->rcb[p_data->hdr.layer_specific];
589      if (p_rcb->status & BTA_AV_RC_CONN_MASK) {
590        AVRC_PassCmd(p_rcb->handle, p_data->api_remote_cmd.label,
591                     &p_data->api_remote_cmd.msg);
592      }
593    }
594  }
595}
596
597/*******************************************************************************
598 *
599 * Function         bta_av_rc_vendor_cmd
600 *
601 * Description      Send an AVRCP vendor specific command.
602 *
603 * Returns          void
604 *
605 ******************************************************************************/
606void bta_av_rc_vendor_cmd(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data) {
607  tBTA_AV_RCB* p_rcb;
608  if ((p_cb->features & (BTA_AV_FEAT_RCCT | BTA_AV_FEAT_VENDOR)) ==
609      (BTA_AV_FEAT_RCCT | BTA_AV_FEAT_VENDOR)) {
610    if (p_data->hdr.layer_specific < BTA_AV_NUM_RCB) {
611      p_rcb = &p_cb->rcb[p_data->hdr.layer_specific];
612      AVRC_VendorCmd(p_rcb->handle, p_data->api_vendor.label,
613                     &p_data->api_vendor.msg);
614    }
615  }
616}
617
618/*******************************************************************************
619 *
620 * Function         bta_av_rc_vendor_rsp
621 *
622 * Description      Send an AVRCP vendor specific response.
623 *
624 * Returns          void
625 *
626 ******************************************************************************/
627void bta_av_rc_vendor_rsp(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data) {
628  tBTA_AV_RCB* p_rcb;
629  if ((p_cb->features & (BTA_AV_FEAT_RCTG | BTA_AV_FEAT_VENDOR)) ==
630      (BTA_AV_FEAT_RCTG | BTA_AV_FEAT_VENDOR)) {
631    if (p_data->hdr.layer_specific < BTA_AV_NUM_RCB) {
632      p_rcb = &p_cb->rcb[p_data->hdr.layer_specific];
633      AVRC_VendorRsp(p_rcb->handle, p_data->api_vendor.label,
634                     &p_data->api_vendor.msg);
635    }
636  }
637}
638
639/*******************************************************************************
640 *
641 * Function         bta_av_rc_meta_rsp
642 *
643 * Description      Send an AVRCP metadata/advanced control command/response.
644 *
645 * Returns          void
646 *
647 ******************************************************************************/
648void bta_av_rc_meta_rsp(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data) {
649  tBTA_AV_RCB* p_rcb;
650  bool do_free = true;
651
652  if ((p_cb->features & BTA_AV_FEAT_METADATA) &&
653      (p_data->hdr.layer_specific < BTA_AV_NUM_RCB)) {
654    if ((p_data->api_meta_rsp.is_rsp && (p_cb->features & BTA_AV_FEAT_RCTG)) ||
655        (!p_data->api_meta_rsp.is_rsp && (p_cb->features & BTA_AV_FEAT_RCCT))) {
656      p_rcb = &p_cb->rcb[p_data->hdr.layer_specific];
657      if (p_rcb->handle != BTA_AV_RC_HANDLE_NONE) {
658        AVRC_MsgReq(p_rcb->handle, p_data->api_meta_rsp.label,
659                    p_data->api_meta_rsp.rsp_code, p_data->api_meta_rsp.p_pkt);
660        do_free = false;
661      }
662    }
663  }
664
665  if (do_free) osi_free_and_reset((void**)&p_data->api_meta_rsp.p_pkt);
666}
667
668/*******************************************************************************
669 *
670 * Function         bta_av_rc_free_rsp
671 *
672 * Description      free an AVRCP metadata command buffer.
673 *
674 * Returns          void
675 *
676 ******************************************************************************/
677void bta_av_rc_free_rsp(UNUSED_ATTR tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data) {
678  osi_free_and_reset((void**)&p_data->api_meta_rsp.p_pkt);
679}
680
681/*******************************************************************************
682 *
683 * Function         bta_av_rc_free_browse_msg
684 *
685 * Description      free an AVRCP browse message buffer.
686 *
687 * Returns          void
688 *
689 ******************************************************************************/
690void bta_av_rc_free_browse_msg(UNUSED_ATTR tBTA_AV_CB* p_cb,
691                               tBTA_AV_DATA* p_data) {
692  if (p_data->rc_msg.opcode == AVRC_OP_BROWSE) {
693    osi_free_and_reset((void**)&p_data->rc_msg.msg.browse.p_browse_pkt);
694  }
695}
696
697/*******************************************************************************
698 *
699 * Function         bta_av_chk_notif_evt_id
700 *
701 * Description      make sure the requested player id is valid.
702 *
703 * Returns          BTA_AV_STS_NO_RSP, if no error
704 *
705 ******************************************************************************/
706static tAVRC_STS bta_av_chk_notif_evt_id(tAVRC_MSG_VENDOR* p_vendor) {
707  tAVRC_STS status = BTA_AV_STS_NO_RSP;
708  uint8_t xx;
709  uint16_t u16;
710  uint8_t* p = p_vendor->p_vendor_data + 2;
711
712  BE_STREAM_TO_UINT16(u16, p);
713  /* double check the fixed length */
714  if ((u16 != 5) || (p_vendor->vendor_len != 9)) {
715    status = AVRC_STS_INTERNAL_ERR;
716  } else {
717    /* make sure the player_id is valid */
718    for (xx = 0; xx < p_bta_av_cfg->num_evt_ids; xx++) {
719      if (*p == p_bta_av_cfg->p_meta_evt_ids[xx]) {
720        break;
721      }
722    }
723    if (xx == p_bta_av_cfg->num_evt_ids) {
724      status = AVRC_STS_BAD_PARAM;
725    }
726  }
727
728  return status;
729}
730
731/*******************************************************************************
732 *
733 * Function         bta_av_proc_meta_cmd
734 *
735 * Description      Process an AVRCP metadata command from the peer.
736 *
737 * Returns          true to respond immediately
738 *
739 ******************************************************************************/
740tBTA_AV_EVT bta_av_proc_meta_cmd(tAVRC_RESPONSE* p_rc_rsp,
741                                 tBTA_AV_RC_MSG* p_msg, uint8_t* p_ctype) {
742  tBTA_AV_EVT evt = BTA_AV_META_MSG_EVT;
743  uint8_t u8, pdu, *p;
744  uint16_t u16;
745  tAVRC_MSG_VENDOR* p_vendor = &p_msg->msg.vendor;
746
747#if (AVRC_METADATA_INCLUDED == TRUE)
748  pdu = *(p_vendor->p_vendor_data);
749  p_rc_rsp->pdu = pdu;
750  *p_ctype = AVRC_RSP_REJ;
751
752  /* Check to ansure a  valid minimum meta data length */
753  if ((AVRC_MIN_META_CMD_LEN + p_vendor->vendor_len) > AVRC_META_CMD_BUF_SIZE) {
754    /* reject it */
755    p_rc_rsp->rsp.status = AVRC_STS_BAD_PARAM;
756    APPL_TRACE_ERROR("%s Invalid meta-command length: %d", __func__,
757                     p_vendor->vendor_len);
758    return 0;
759  }
760
761  /* Metadata messages only use PANEL sub-unit type */
762  if (p_vendor->hdr.subunit_type != AVRC_SUB_PANEL) {
763    APPL_TRACE_DEBUG("SUBUNIT must be PANEL");
764    /* reject it */
765    evt = 0;
766    p_vendor->hdr.ctype = BTA_AV_RSP_NOT_IMPL;
767    p_vendor->vendor_len = 0;
768    p_rc_rsp->rsp.status = AVRC_STS_BAD_PARAM;
769  } else if (!AVRC_IsValidAvcType(pdu, p_vendor->hdr.ctype)) {
770    APPL_TRACE_DEBUG("Invalid pdu/ctype: 0x%x, %d", pdu, p_vendor->hdr.ctype);
771    /* reject invalid message without reporting to app */
772    evt = 0;
773    p_rc_rsp->rsp.status = AVRC_STS_BAD_CMD;
774  } else {
775    switch (pdu) {
776      case AVRC_PDU_GET_CAPABILITIES:
777        /* process GetCapabilities command without reporting the event to app */
778        evt = 0;
779        u8 = *(p_vendor->p_vendor_data + 4);
780        p = p_vendor->p_vendor_data + 2;
781        p_rc_rsp->get_caps.capability_id = u8;
782        BE_STREAM_TO_UINT16(u16, p);
783        if ((u16 != 1) || (p_vendor->vendor_len != 5)) {
784          p_rc_rsp->get_caps.status = AVRC_STS_INTERNAL_ERR;
785        } else {
786          p_rc_rsp->get_caps.status = AVRC_STS_NO_ERROR;
787          if (u8 == AVRC_CAP_COMPANY_ID) {
788            *p_ctype = AVRC_RSP_IMPL_STBL;
789            p_rc_rsp->get_caps.count = p_bta_av_cfg->num_co_ids;
790            memcpy(p_rc_rsp->get_caps.param.company_id,
791                   p_bta_av_cfg->p_meta_co_ids,
792                   (p_bta_av_cfg->num_co_ids << 2));
793          } else if (u8 == AVRC_CAP_EVENTS_SUPPORTED) {
794            *p_ctype = AVRC_RSP_IMPL_STBL;
795            p_rc_rsp->get_caps.count = p_bta_av_cfg->num_evt_ids;
796            memcpy(p_rc_rsp->get_caps.param.event_id,
797                   p_bta_av_cfg->p_meta_evt_ids, p_bta_av_cfg->num_evt_ids);
798          } else {
799            APPL_TRACE_DEBUG("Invalid capability ID: 0x%x", u8);
800            /* reject - unknown capability ID */
801            p_rc_rsp->get_caps.status = AVRC_STS_BAD_PARAM;
802          }
803        }
804        break;
805
806      case AVRC_PDU_REGISTER_NOTIFICATION:
807        /* make sure the event_id is implemented */
808        p_rc_rsp->rsp.status = bta_av_chk_notif_evt_id(p_vendor);
809        if (p_rc_rsp->rsp.status != BTA_AV_STS_NO_RSP) evt = 0;
810        break;
811    }
812  }
813#else
814  APPL_TRACE_DEBUG("AVRCP 1.3 Metadata not supporteed. Reject command.");
815  /* reject invalid message without reporting to app */
816  evt = 0;
817  p_rc_rsp->rsp.status = AVRC_STS_BAD_CMD;
818#endif
819
820  return evt;
821}
822
823/*******************************************************************************
824 *
825 * Function         bta_av_rc_msg
826 *
827 * Description      Process an AVRCP message from the peer.
828 *
829 * Returns          void
830 *
831 ******************************************************************************/
832void bta_av_rc_msg(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data) {
833  tBTA_AV_EVT evt = 0;
834  tBTA_AV av;
835  BT_HDR* p_pkt = NULL;
836  tAVRC_MSG_VENDOR* p_vendor = &p_data->rc_msg.msg.vendor;
837  bool is_inquiry = ((p_data->rc_msg.msg.hdr.ctype == AVRC_CMD_SPEC_INQ) ||
838                     p_data->rc_msg.msg.hdr.ctype == AVRC_CMD_GEN_INQ);
839#if (AVRC_METADATA_INCLUDED == TRUE)
840  uint8_t ctype = 0;
841  tAVRC_RESPONSE rc_rsp;
842
843  rc_rsp.rsp.status = BTA_AV_STS_NO_RSP;
844#endif
845
846  if (NULL == p_data) {
847    APPL_TRACE_ERROR("Message from peer with no data in %s", __func__);
848    return;
849  }
850
851  APPL_TRACE_DEBUG("%s: opcode=%x, ctype=%x", __func__, p_data->rc_msg.opcode,
852                   p_data->rc_msg.msg.hdr.ctype);
853
854  if (p_data->rc_msg.opcode == AVRC_OP_PASS_THRU) {
855    /* if this is a pass thru command */
856    if ((p_data->rc_msg.msg.hdr.ctype == AVRC_CMD_CTRL) ||
857        (p_data->rc_msg.msg.hdr.ctype == AVRC_CMD_SPEC_INQ) ||
858        (p_data->rc_msg.msg.hdr.ctype == AVRC_CMD_GEN_INQ)) {
859      /* check if operation is supported */
860      char avrcp_ct_support[PROPERTY_VALUE_MAX];
861      osi_property_get("bluetooth.pts.avrcp_ct.support", avrcp_ct_support,
862                       "false");
863      if (p_data->rc_msg.msg.pass.op_id == AVRC_ID_VENDOR) {
864        p_data->rc_msg.msg.hdr.ctype = BTA_AV_RSP_NOT_IMPL;
865#if (AVRC_METADATA_INCLUDED == TRUE)
866        if (p_cb->features & BTA_AV_FEAT_METADATA)
867          p_data->rc_msg.msg.hdr.ctype = bta_av_group_navi_supported(
868              p_data->rc_msg.msg.pass.pass_len,
869              p_data->rc_msg.msg.pass.p_pass_data, is_inquiry);
870#endif
871      } else if (((p_data->rc_msg.msg.pass.op_id == AVRC_ID_VOL_UP) ||
872                  (p_data->rc_msg.msg.pass.op_id == AVRC_ID_VOL_DOWN)) &&
873                 !strcmp(avrcp_ct_support, "true")) {
874        p_data->rc_msg.msg.hdr.ctype = BTA_AV_RSP_ACCEPT;
875      } else {
876        p_data->rc_msg.msg.hdr.ctype =
877            bta_av_op_supported(p_data->rc_msg.msg.pass.op_id, is_inquiry);
878      }
879
880      APPL_TRACE_DEBUG("ctype %d", p_data->rc_msg.msg.hdr.ctype)
881
882      /* send response */
883      if (p_data->rc_msg.msg.hdr.ctype != BTA_AV_RSP_INTERIM)
884        AVRC_PassRsp(p_data->rc_msg.handle, p_data->rc_msg.label,
885                     &p_data->rc_msg.msg.pass);
886
887      /* set up for callback if supported */
888      if (p_data->rc_msg.msg.hdr.ctype == BTA_AV_RSP_ACCEPT ||
889          p_data->rc_msg.msg.hdr.ctype == BTA_AV_RSP_INTERIM) {
890        evt = BTA_AV_REMOTE_CMD_EVT;
891        av.remote_cmd.rc_id = p_data->rc_msg.msg.pass.op_id;
892        av.remote_cmd.key_state = p_data->rc_msg.msg.pass.state;
893        av.remote_cmd.p_data = p_data->rc_msg.msg.pass.p_pass_data;
894        av.remote_cmd.len = p_data->rc_msg.msg.pass.pass_len;
895        memcpy(&av.remote_cmd.hdr, &p_data->rc_msg.msg.hdr, sizeof(tAVRC_HDR));
896        av.remote_cmd.label = p_data->rc_msg.label;
897      }
898    }
899    /* else if this is a pass thru response */
900    /* id response type is not impl, we have to release label */
901    else if (p_data->rc_msg.msg.hdr.ctype >= AVRC_RSP_NOT_IMPL) {
902      /* set up for callback */
903      evt = BTA_AV_REMOTE_RSP_EVT;
904      av.remote_rsp.rc_id = p_data->rc_msg.msg.pass.op_id;
905      av.remote_rsp.key_state = p_data->rc_msg.msg.pass.state;
906      av.remote_rsp.rsp_code = p_data->rc_msg.msg.hdr.ctype;
907      av.remote_rsp.label = p_data->rc_msg.label;
908
909      /* If this response is for vendor unique command  */
910      if ((p_data->rc_msg.msg.pass.op_id == AVRC_ID_VENDOR) &&
911          (p_data->rc_msg.msg.pass.pass_len > 0)) {
912        av.remote_rsp.p_data =
913            (uint8_t*)osi_malloc(p_data->rc_msg.msg.pass.pass_len);
914        APPL_TRACE_DEBUG("Vendor Unique data len = %d",
915                         p_data->rc_msg.msg.pass.pass_len);
916        memcpy(av.remote_rsp.p_data, p_data->rc_msg.msg.pass.p_pass_data,
917               p_data->rc_msg.msg.pass.pass_len);
918      }
919    }
920    /* must be a bad ctype -> reject*/
921    else {
922      p_data->rc_msg.msg.hdr.ctype = BTA_AV_RSP_REJ;
923      AVRC_PassRsp(p_data->rc_msg.handle, p_data->rc_msg.label,
924                   &p_data->rc_msg.msg.pass);
925    }
926  }
927  /* else if this is a vendor specific command or response */
928  else if (p_data->rc_msg.opcode == AVRC_OP_VENDOR) {
929    /* set up for callback */
930    av.vendor_cmd.code = p_data->rc_msg.msg.hdr.ctype;
931    av.vendor_cmd.company_id = p_vendor->company_id;
932    av.vendor_cmd.label = p_data->rc_msg.label;
933    av.vendor_cmd.p_data = p_vendor->p_vendor_data;
934    av.vendor_cmd.len = p_vendor->vendor_len;
935
936    /* if configured to support vendor specific and it's a command */
937    if ((p_cb->features & BTA_AV_FEAT_VENDOR) &&
938        p_data->rc_msg.msg.hdr.ctype <= AVRC_CMD_GEN_INQ) {
939#if (AVRC_METADATA_INCLUDED == TRUE)
940      if ((p_cb->features & BTA_AV_FEAT_METADATA) &&
941          (p_vendor->company_id == AVRC_CO_METADATA)) {
942        av.meta_msg.p_msg = &p_data->rc_msg.msg;
943        rc_rsp.rsp.status = BTA_AV_STS_NO_RSP;
944        evt = bta_av_proc_meta_cmd(&rc_rsp, &p_data->rc_msg, &ctype);
945      } else
946#endif
947        evt = BTA_AV_VENDOR_CMD_EVT;
948    }
949    /* else if configured to support vendor specific and it's a response */
950    else if ((p_cb->features & BTA_AV_FEAT_VENDOR) &&
951             p_data->rc_msg.msg.hdr.ctype >= AVRC_RSP_NOT_IMPL) {
952#if (AVRC_METADATA_INCLUDED == TRUE)
953      if ((p_cb->features & BTA_AV_FEAT_METADATA) &&
954          (p_vendor->company_id == AVRC_CO_METADATA)) {
955        av.meta_msg.p_msg = &p_data->rc_msg.msg;
956        evt = BTA_AV_META_MSG_EVT;
957      } else
958#endif
959        evt = BTA_AV_VENDOR_RSP_EVT;
960
961    }
962    /* else if not configured to support vendor specific and it's a command */
963    else if (!(p_cb->features & BTA_AV_FEAT_VENDOR) &&
964             p_data->rc_msg.msg.hdr.ctype <= AVRC_CMD_GEN_INQ) {
965      if (p_data->rc_msg.msg.vendor.p_vendor_data[0] == AVRC_PDU_INVALID) {
966        /* reject it */
967        p_data->rc_msg.msg.hdr.ctype = BTA_AV_RSP_REJ;
968        p_data->rc_msg.msg.vendor.p_vendor_data[4] = AVRC_STS_BAD_CMD;
969      } else
970        p_data->rc_msg.msg.hdr.ctype = BTA_AV_RSP_NOT_IMPL;
971      AVRC_VendorRsp(p_data->rc_msg.handle, p_data->rc_msg.label,
972                     &p_data->rc_msg.msg.vendor);
973    }
974  } else if (p_data->rc_msg.opcode == AVRC_OP_BROWSE) {
975    /* set up for callback */
976    av.meta_msg.rc_handle = p_data->rc_msg.handle;
977    av.meta_msg.company_id = p_vendor->company_id;
978    av.meta_msg.code = p_data->rc_msg.msg.hdr.ctype;
979    av.meta_msg.label = p_data->rc_msg.label;
980    av.meta_msg.p_msg = &p_data->rc_msg.msg;
981    av.meta_msg.p_data = p_data->rc_msg.msg.browse.p_browse_data;
982    av.meta_msg.len = p_data->rc_msg.msg.browse.browse_len;
983    evt = BTA_AV_META_MSG_EVT;
984  }
985
986#if (AVRC_METADATA_INCLUDED == TRUE)
987  if (evt == 0 && rc_rsp.rsp.status != BTA_AV_STS_NO_RSP) {
988    if (!p_pkt) {
989      rc_rsp.rsp.opcode = p_data->rc_msg.opcode;
990      AVRC_BldResponse(0, &rc_rsp, &p_pkt);
991    }
992    if (p_pkt)
993      AVRC_MsgReq(p_data->rc_msg.handle, p_data->rc_msg.label, ctype, p_pkt);
994  }
995#endif
996
997  /* call callback */
998  if (evt != 0) {
999    av.remote_cmd.rc_handle = p_data->rc_msg.handle;
1000    (*p_cb->p_cback)(evt, &av);
1001    /* If browsing message, then free the browse message buffer */
1002    bta_av_rc_free_browse_msg(p_cb, p_data);
1003  }
1004}
1005
1006/*******************************************************************************
1007 *
1008 * Function         bta_av_rc_close
1009 *
1010 * Description      close the specified AVRC handle.
1011 *
1012 * Returns          void
1013 *
1014 ******************************************************************************/
1015void bta_av_rc_close(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data) {
1016  uint16_t handle = p_data->hdr.layer_specific;
1017  tBTA_AV_SCB* p_scb;
1018  tBTA_AV_RCB* p_rcb;
1019
1020  if (handle < BTA_AV_NUM_RCB) {
1021    p_rcb = &p_cb->rcb[handle];
1022
1023    APPL_TRACE_DEBUG("%s handle: %d, status=0x%x", __func__, p_rcb->handle,
1024                     p_rcb->status);
1025    if (p_rcb->handle != BTA_AV_RC_HANDLE_NONE) {
1026      if (p_rcb->shdl) {
1027        p_scb = bta_av_cb.p_scb[p_rcb->shdl - 1];
1028        if (p_scb) {
1029          /* just in case the RC timer is active
1030          if (bta_av_cb.features & BTA_AV_FEAT_RCCT &&
1031             p_scb->chnl == BTA_AV_CHNL_AUDIO) */
1032          alarm_cancel(p_scb->avrc_ct_timer);
1033        }
1034      }
1035
1036      AVRC_Close(p_rcb->handle);
1037    }
1038  }
1039}
1040
1041/*******************************************************************************
1042 *
1043 * Function         bta_av_rc_browse_close
1044 *
1045 * Description      Empty placeholder.
1046 *
1047 * Returns          void
1048 *
1049 ******************************************************************************/
1050void bta_av_rc_browse_close(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data) {
1051  APPL_TRACE_WARNING("%s empty placeholder does nothing!", __func__);
1052}
1053
1054/*******************************************************************************
1055 *
1056 * Function         bta_av_get_shdl
1057 *
1058 * Returns          The index to p_scb[]
1059 *
1060 ******************************************************************************/
1061static uint8_t bta_av_get_shdl(tBTA_AV_SCB* p_scb) {
1062  int i;
1063  uint8_t shdl = 0;
1064  /* find the SCB & stop the timer */
1065  for (i = 0; i < BTA_AV_NUM_STRS; i++) {
1066    if (p_scb == bta_av_cb.p_scb[i]) {
1067      shdl = i + 1;
1068      break;
1069    }
1070  }
1071  return shdl;
1072}
1073
1074/*******************************************************************************
1075 *
1076 * Function         bta_av_stream_chg
1077 *
1078 * Description      audio streaming status changed.
1079 *
1080 * Returns          void
1081 *
1082 ******************************************************************************/
1083void bta_av_stream_chg(tBTA_AV_SCB* p_scb, bool started) {
1084  uint8_t started_msk;
1085  int i;
1086  uint8_t* p_streams;
1087  bool no_streams = false;
1088  tBTA_AV_SCB* p_scbi;
1089
1090  started_msk = BTA_AV_HNDL_TO_MSK(p_scb->hdi);
1091  APPL_TRACE_DEBUG("bta_av_stream_chg started:%d started_msk:x%x chnl:x%x",
1092                   started, started_msk, p_scb->chnl);
1093  if (BTA_AV_CHNL_AUDIO == p_scb->chnl)
1094    p_streams = &bta_av_cb.audio_streams;
1095  else
1096    p_streams = &bta_av_cb.video_streams;
1097
1098  if (started) {
1099    /* Let L2CAP know this channel is processed with high priority */
1100    L2CA_SetAclPriority(p_scb->peer_addr, L2CAP_PRIORITY_HIGH);
1101    (*p_streams) |= started_msk;
1102  } else {
1103    (*p_streams) &= ~started_msk;
1104  }
1105
1106  if (!started) {
1107    i = 0;
1108    if (BTA_AV_CHNL_AUDIO == p_scb->chnl) {
1109      if (bta_av_cb.video_streams == 0) no_streams = true;
1110    } else {
1111      no_streams = true;
1112      if (bta_av_cb.audio_streams) {
1113        for (; i < BTA_AV_NUM_STRS; i++) {
1114          p_scbi = bta_av_cb.p_scb[i];
1115          /* scb is used and started */
1116          if (p_scbi && (bta_av_cb.audio_streams & BTA_AV_HNDL_TO_MSK(i)) &&
1117              bdcmp(p_scbi->peer_addr, p_scb->peer_addr) == 0) {
1118            no_streams = false;
1119            break;
1120          }
1121        }
1122      }
1123    }
1124
1125    APPL_TRACE_DEBUG("no_streams:%d i:%d, audio_streams:x%x, video_streams:x%x",
1126                     no_streams, i, bta_av_cb.audio_streams,
1127                     bta_av_cb.video_streams);
1128    if (no_streams) {
1129      /* Let L2CAP know this channel is processed with low priority */
1130      L2CA_SetAclPriority(p_scb->peer_addr, L2CAP_PRIORITY_NORMAL);
1131    }
1132  }
1133}
1134
1135/*******************************************************************************
1136 *
1137 * Function         bta_av_conn_chg
1138 *
1139 * Description      connetion status changed.
1140 *                  Open an AVRCP acceptor channel, if new conn.
1141 *
1142 * Returns          void
1143 *
1144 ******************************************************************************/
1145void bta_av_conn_chg(tBTA_AV_DATA* p_data) {
1146  tBTA_AV_CB* p_cb = &bta_av_cb;
1147  tBTA_AV_SCB* p_scb = NULL;
1148  tBTA_AV_SCB* p_scbi;
1149  uint8_t mask;
1150  uint8_t conn_msk;
1151  uint8_t old_msk;
1152  int i;
1153  int index = (p_data->hdr.layer_specific & BTA_AV_HNDL_MSK) - 1;
1154  tBTA_AV_LCB* p_lcb;
1155  tBTA_AV_LCB* p_lcb_rc;
1156  tBTA_AV_RCB *p_rcb, *p_rcb2;
1157  bool chk_restore = false;
1158
1159  /* Validate array index*/
1160  if (index < BTA_AV_NUM_STRS) {
1161    p_scb = p_cb->p_scb[index];
1162  }
1163  mask = BTA_AV_HNDL_TO_MSK(index);
1164  p_lcb = bta_av_find_lcb(p_data->conn_chg.peer_addr, BTA_AV_LCB_FIND);
1165  conn_msk = 1 << (index + 1);
1166  if (p_data->conn_chg.is_up) {
1167    /* set the conned mask for this channel */
1168    if (p_scb) {
1169      if (p_lcb) {
1170        p_lcb->conn_msk |= conn_msk;
1171        for (i = 0; i < BTA_AV_NUM_RCB; i++) {
1172          if (bta_av_cb.rcb[i].lidx == p_lcb->lidx) {
1173            bta_av_cb.rcb[i].shdl = index + 1;
1174            APPL_TRACE_DEBUG(
1175                "conn_chg up[%d]: %d, status=0x%x, shdl:%d, lidx:%d", i,
1176                bta_av_cb.rcb[i].handle, bta_av_cb.rcb[i].status,
1177                bta_av_cb.rcb[i].shdl, bta_av_cb.rcb[i].lidx);
1178            break;
1179          }
1180        }
1181      }
1182      if (p_scb->chnl == BTA_AV_CHNL_AUDIO) {
1183        old_msk = p_cb->conn_audio;
1184        p_cb->conn_audio |= mask;
1185      } else {
1186        old_msk = p_cb->conn_video;
1187        p_cb->conn_video |= mask;
1188      }
1189
1190      if ((old_msk & mask) == 0) {
1191        /* increase the audio open count, if not set yet */
1192        bta_av_cb.audio_open_cnt++;
1193      }
1194
1195      APPL_TRACE_DEBUG("rc_acp_handle:%d rc_acp_idx:%d", p_cb->rc_acp_handle,
1196                       p_cb->rc_acp_idx);
1197      /* check if the AVRCP ACP channel is already connected */
1198      if (p_lcb && p_cb->rc_acp_handle != BTA_AV_RC_HANDLE_NONE &&
1199          p_cb->rc_acp_idx) {
1200        p_lcb_rc = &p_cb->lcb[BTA_AV_NUM_LINKS];
1201        APPL_TRACE_DEBUG(
1202            "rc_acp is connected && conn_chg on same addr "
1203            "p_lcb_rc->conn_msk:x%x",
1204            p_lcb_rc->conn_msk);
1205        /* check if the RC is connected to the scb addr */
1206        APPL_TRACE_DEBUG("p_lcb_rc->addr: %02x:%02x:%02x:%02x:%02x:%02x",
1207                         p_lcb_rc->addr[0], p_lcb_rc->addr[1],
1208                         p_lcb_rc->addr[2], p_lcb_rc->addr[3],
1209                         p_lcb_rc->addr[4], p_lcb_rc->addr[5]);
1210        APPL_TRACE_DEBUG(
1211            "conn_chg.peer_addr: %02x:%02x:%02x:%02x:%02x:%02x",
1212            p_data->conn_chg.peer_addr[0], p_data->conn_chg.peer_addr[1],
1213            p_data->conn_chg.peer_addr[2], p_data->conn_chg.peer_addr[3],
1214            p_data->conn_chg.peer_addr[4], p_data->conn_chg.peer_addr[5]);
1215        if (p_lcb_rc->conn_msk &&
1216            bdcmp(p_lcb_rc->addr, p_data->conn_chg.peer_addr) == 0) {
1217          /* AVRCP is already connected.
1218           * need to update the association betwen SCB and RCB */
1219          p_lcb_rc->conn_msk = 0; /* indicate RC ONLY is not connected */
1220          p_lcb_rc->lidx = 0;
1221          p_scb->rc_handle = p_cb->rc_acp_handle;
1222          p_rcb = &p_cb->rcb[p_cb->rc_acp_idx - 1];
1223          p_rcb->shdl = bta_av_get_shdl(p_scb);
1224          APPL_TRACE_DEBUG("update rc_acp shdl:%d/%d srch:%d", index + 1,
1225                           p_rcb->shdl, p_scb->rc_handle);
1226
1227          p_rcb2 = bta_av_get_rcb_by_shdl(p_rcb->shdl);
1228          if (p_rcb2) {
1229            /* found the RCB that was created to associated with this SCB */
1230            p_cb->rc_acp_handle = p_rcb2->handle;
1231            p_cb->rc_acp_idx = (p_rcb2 - p_cb->rcb) + 1;
1232            APPL_TRACE_DEBUG("new rc_acp_handle:%d, idx:%d",
1233                             p_cb->rc_acp_handle, p_cb->rc_acp_idx);
1234            p_rcb2->lidx = (BTA_AV_NUM_LINKS + 1);
1235            APPL_TRACE_DEBUG("rc2 handle:%d lidx:%d/%d", p_rcb2->handle,
1236                             p_rcb2->lidx, p_cb->lcb[p_rcb2->lidx - 1].lidx);
1237          }
1238          p_rcb->lidx = p_lcb->lidx;
1239          APPL_TRACE_DEBUG("rc handle:%d lidx:%d/%d", p_rcb->handle,
1240                           p_rcb->lidx, p_cb->lcb[p_rcb->lidx - 1].lidx);
1241        }
1242      }
1243    }
1244  } else {
1245    if ((p_cb->conn_audio & mask) && bta_av_cb.audio_open_cnt) {
1246      /* this channel is still marked as open. decrease the count */
1247      bta_av_cb.audio_open_cnt--;
1248    }
1249
1250    /* clear the conned mask for this channel */
1251    p_cb->conn_audio &= ~mask;
1252    p_cb->conn_video &= ~mask;
1253    if (p_scb) {
1254      /* the stream is closed.
1255       * clear the peer address, so it would not mess up the AVRCP for the next
1256       * round of operation */
1257      bdcpy(p_scb->peer_addr, bd_addr_null);
1258      if (p_scb->chnl == BTA_AV_CHNL_AUDIO) {
1259        if (p_lcb) {
1260          p_lcb->conn_msk &= ~conn_msk;
1261        }
1262        /* audio channel is down. make sure the INT channel is down */
1263        /* just in case the RC timer is active
1264        if (p_cb->features & BTA_AV_FEAT_RCCT) */
1265        { alarm_cancel(p_scb->avrc_ct_timer); }
1266        /* one audio channel goes down. check if we need to restore high
1267         * priority */
1268        chk_restore = true;
1269      }
1270    }
1271
1272    APPL_TRACE_DEBUG("bta_av_conn_chg shdl:%d", index + 1);
1273    for (i = 0; i < BTA_AV_NUM_RCB; i++) {
1274      APPL_TRACE_DEBUG("conn_chg dn[%d]: %d, status=0x%x, shdl:%d, lidx:%d", i,
1275                       bta_av_cb.rcb[i].handle, bta_av_cb.rcb[i].status,
1276                       bta_av_cb.rcb[i].shdl, bta_av_cb.rcb[i].lidx);
1277      if (bta_av_cb.rcb[i].shdl == index + 1) {
1278        bta_av_del_rc(&bta_av_cb.rcb[i]);
1279        /* since the connection is already down and info was removed, clean
1280         * reference */
1281        bta_av_cb.rcb[i].shdl = 0;
1282        break;
1283      }
1284    }
1285
1286    if (p_cb->conn_audio == 0 && p_cb->conn_video == 0) {
1287      /* if both channels are not connected,
1288       * close all RC channels */
1289      bta_av_close_all_rc(p_cb);
1290    }
1291
1292    /* if the AVRCP is no longer listening, create the listening channel */
1293    if (bta_av_cb.rc_acp_handle == BTA_AV_RC_HANDLE_NONE &&
1294        bta_av_cb.features & BTA_AV_FEAT_RCTG)
1295      bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1);
1296  }
1297
1298  APPL_TRACE_DEBUG(
1299      "bta_av_conn_chg audio:%x video:%x up:%d conn_msk:0x%x chk_restore:%d "
1300      "audio_open_cnt:%d",
1301      p_cb->conn_audio, p_cb->conn_video, p_data->conn_chg.is_up, conn_msk,
1302      chk_restore, p_cb->audio_open_cnt);
1303
1304  if (chk_restore) {
1305    if (p_cb->audio_open_cnt == 1) {
1306      /* one audio channel goes down and there's one audio channel remains open.
1307       * restore the switch role in default link policy */
1308      bta_sys_set_default_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH);
1309      /* allow role switch, if this is the last connection */
1310      bta_av_restore_switch();
1311    }
1312    if (p_cb->audio_open_cnt) {
1313      /* adjust flush timeout settings to longer period */
1314      for (i = 0; i < BTA_AV_NUM_STRS; i++) {
1315        p_scbi = bta_av_cb.p_scb[i];
1316        if (p_scbi && p_scbi->chnl == BTA_AV_CHNL_AUDIO && p_scbi->co_started) {
1317          /* may need to update the flush timeout of this already started stream
1318           */
1319          if (p_scbi->co_started != bta_av_cb.audio_open_cnt) {
1320            p_scbi->co_started = bta_av_cb.audio_open_cnt;
1321            L2CA_SetFlushTimeout(
1322                p_scbi->peer_addr,
1323                p_bta_av_cfg->p_audio_flush_to[p_scbi->co_started - 1]);
1324          }
1325        }
1326      }
1327    }
1328  }
1329}
1330
1331/*******************************************************************************
1332 *
1333 * Function         bta_av_disable
1334 *
1335 * Description      disable AV.
1336 *
1337 * Returns          void
1338 *
1339 ******************************************************************************/
1340void bta_av_disable(tBTA_AV_CB* p_cb, UNUSED_ATTR tBTA_AV_DATA* p_data) {
1341  BT_HDR hdr;
1342  uint16_t xx;
1343
1344  p_cb->disabling = true;
1345
1346  bta_av_close_all_rc(p_cb);
1347
1348  osi_free_and_reset((void**)&p_cb->p_disc_db);
1349
1350  /* disable audio/video - de-register all channels,
1351   * expect BTA_AV_DEREG_COMP_EVT when deregister is complete */
1352  for (xx = 0; xx < BTA_AV_NUM_STRS; xx++) {
1353    if (p_cb->p_scb[xx] != NULL) {
1354      hdr.layer_specific = xx + 1;
1355      bta_av_api_deregister((tBTA_AV_DATA*)&hdr);
1356    }
1357  }
1358
1359  alarm_free(p_cb->link_signalling_timer);
1360  p_cb->link_signalling_timer = NULL;
1361  alarm_free(p_cb->accept_signalling_timer);
1362  p_cb->accept_signalling_timer = NULL;
1363}
1364
1365/*******************************************************************************
1366 *
1367 * Function         bta_av_api_disconnect
1368 *
1369 * Description      .
1370 *
1371 * Returns          void
1372 *
1373 ******************************************************************************/
1374void bta_av_api_disconnect(tBTA_AV_DATA* p_data) {
1375  AVDT_DisconnectReq(p_data->api_discnt.bd_addr, bta_av_conn_cback);
1376  alarm_cancel(bta_av_cb.link_signalling_timer);
1377}
1378
1379/*******************************************************************************
1380 *
1381 * Function         bta_av_sig_chg
1382 *
1383 * Description      process AVDT signal channel up/down.
1384 *
1385 * Returns          void
1386 *
1387 ******************************************************************************/
1388void bta_av_sig_chg(tBTA_AV_DATA* p_data) {
1389  uint16_t event = p_data->str_msg.hdr.layer_specific;
1390  tBTA_AV_CB* p_cb = &bta_av_cb;
1391  uint32_t xx;
1392  uint8_t mask;
1393  tBTA_AV_LCB* p_lcb = NULL;
1394
1395  APPL_TRACE_DEBUG("bta_av_sig_chg event: %d", event);
1396  if (event == AVDT_CONNECT_IND_EVT) {
1397    p_lcb = bta_av_find_lcb(p_data->str_msg.bd_addr, BTA_AV_LCB_FIND);
1398    if (!p_lcb) {
1399      /* if the address does not have an LCB yet, alloc one */
1400      for (xx = 0; xx < BTA_AV_NUM_LINKS; xx++) {
1401        mask = 1 << xx;
1402        APPL_TRACE_DEBUG("conn_lcb: 0x%x", p_cb->conn_lcb);
1403        /* look for a p_lcb with its p_scb registered */
1404        if ((!(mask & p_cb->conn_lcb)) && (p_cb->p_scb[xx] != NULL)) {
1405          p_lcb = &p_cb->lcb[xx];
1406          p_lcb->lidx = xx + 1;
1407          bdcpy(p_lcb->addr, p_data->str_msg.bd_addr);
1408          p_lcb->conn_msk = 0; /* clear the connect mask */
1409          /* start listening when the signal channel is open */
1410          if (p_cb->features & BTA_AV_FEAT_RCTG) {
1411            bta_av_rc_create(p_cb, AVCT_ACP, 0, p_lcb->lidx);
1412          }
1413          /* this entry is not used yet. */
1414          p_cb->conn_lcb |= mask; /* mark it as used */
1415          APPL_TRACE_DEBUG("start sig timer %d", p_data->hdr.offset);
1416          if (p_data->hdr.offset == AVDT_ACP) {
1417            APPL_TRACE_DEBUG("Incoming L2CAP acquired, set state as incoming",
1418                             NULL);
1419            bdcpy(p_cb->p_scb[xx]->peer_addr, p_data->str_msg.bd_addr);
1420            p_cb->p_scb[xx]->use_rc =
1421                true; /* allowing RC for incoming connection */
1422            bta_av_ssm_execute(p_cb->p_scb[xx], BTA_AV_ACP_CONNECT_EVT, p_data);
1423
1424            /* The Pending Event should be sent as soon as the L2CAP signalling
1425             * channel
1426             * is set up, which is NOW. Earlier this was done only after
1427             * BTA_AV_SIGNALLING_TIMEOUT_MS.
1428             * The following function shall send the event and start the
1429             * recurring timer
1430             */
1431            bta_av_signalling_timer(NULL);
1432
1433            APPL_TRACE_DEBUG("%s: Re-start timer for AVDTP service", __func__);
1434            bta_sys_conn_open(BTA_ID_AV, p_cb->p_scb[xx]->app_id,
1435                              p_cb->p_scb[xx]->peer_addr);
1436            /* Possible collision : need to avoid outgoing processing while the
1437             * timer is running */
1438            p_cb->p_scb[xx]->coll_mask = BTA_AV_COLL_INC_TMR;
1439            alarm_set_on_queue(p_cb->accept_signalling_timer,
1440                               BTA_AV_ACCEPT_SIGNALLING_TIMEOUT_MS,
1441                               bta_av_accept_signalling_timer_cback,
1442                               UINT_TO_PTR(xx), btu_bta_alarm_queue);
1443          }
1444          break;
1445        }
1446      }
1447
1448      /* check if we found something */
1449      if (xx == BTA_AV_NUM_LINKS) {
1450        /* We do not have scb for this avdt connection.     */
1451        /* Silently close the connection.                   */
1452        APPL_TRACE_ERROR("av scb not available for avdt connection");
1453        AVDT_DisconnectReq(p_data->str_msg.bd_addr, NULL);
1454        return;
1455      }
1456    }
1457  }
1458#if (BTA_AR_INCLUDED == TRUE)
1459  else if (event == BTA_AR_AVDT_CONN_EVT) {
1460    alarm_cancel(bta_av_cb.link_signalling_timer);
1461  }
1462#endif
1463  else {
1464    /* disconnected. */
1465    APPL_TRACE_DEBUG("%s: bta_av_cb.conn_lcb is %d", __func__,
1466                     bta_av_cb.conn_lcb);
1467
1468    p_lcb = bta_av_find_lcb(p_data->str_msg.bd_addr, BTA_AV_LCB_FREE);
1469    if (p_lcb && (p_lcb->conn_msk || bta_av_cb.conn_lcb)) {
1470      APPL_TRACE_DEBUG("conn_msk: 0x%x", p_lcb->conn_msk);
1471      /* clean up ssm  */
1472      for (xx = 0; xx < BTA_AV_NUM_STRS; xx++) {
1473        if ((p_cb->p_scb[xx]) &&
1474            (bdcmp(p_cb->p_scb[xx]->peer_addr, p_data->str_msg.bd_addr) == 0)) {
1475          APPL_TRACE_DEBUG("%s: Closing timer for AVDTP service", __func__);
1476          bta_sys_conn_close(BTA_ID_AV, p_cb->p_scb[xx]->app_id,
1477                             p_cb->p_scb[xx]->peer_addr);
1478        }
1479        mask = 1 << (xx + 1);
1480        if (((mask & p_lcb->conn_msk) || bta_av_cb.conn_lcb) &&
1481            (p_cb->p_scb[xx]) &&
1482            (bdcmp(p_cb->p_scb[xx]->peer_addr, p_data->str_msg.bd_addr) == 0)) {
1483          APPL_TRACE_DEBUG("%s: Sending AVDT_DISCONNECT_EVT", __func__);
1484          bta_av_ssm_execute(p_cb->p_scb[xx], BTA_AV_AVDT_DISCONNECT_EVT, NULL);
1485        }
1486      }
1487    }
1488  }
1489  APPL_TRACE_DEBUG("%s: sig_chg conn_lcb: 0x%x", __func__, p_cb->conn_lcb);
1490}
1491
1492/*******************************************************************************
1493 *
1494 * Function         bta_av_signalling_timer
1495 *
1496 * Description      process the signal channel timer. This timer is started
1497 *                  when the AVDTP signal channel is connected. If no profile
1498 *                  is connected, the timer goes off every
1499 *                  BTA_AV_SIGNALLING_TIMEOUT_MS.
1500 *
1501 * Returns          void
1502 *
1503 ******************************************************************************/
1504void bta_av_signalling_timer(UNUSED_ATTR tBTA_AV_DATA* p_data) {
1505  tBTA_AV_CB* p_cb = &bta_av_cb;
1506  int xx;
1507  uint8_t mask;
1508  tBTA_AV_LCB* p_lcb = NULL;
1509  tBTA_AV_PEND pend;
1510
1511  APPL_TRACE_DEBUG("%s", __func__);
1512  for (xx = 0; xx < BTA_AV_NUM_LINKS; xx++) {
1513    mask = 1 << xx;
1514    if (mask & p_cb->conn_lcb) {
1515      /* this entry is used. check if it is connected */
1516      p_lcb = &p_cb->lcb[xx];
1517      if (!p_lcb->conn_msk) {
1518        bta_sys_start_timer(p_cb->link_signalling_timer,
1519                            BTA_AV_SIGNALLING_TIMEOUT_MS,
1520                            BTA_AV_SIGNALLING_TIMER_EVT, 0);
1521        bdcpy(pend.bd_addr, p_lcb->addr);
1522        (*p_cb->p_cback)(BTA_AV_PENDING_EVT, (tBTA_AV*)&pend);
1523      }
1524    }
1525  }
1526}
1527
1528/*******************************************************************************
1529 *
1530 * Function         bta_av_accept_signalling_timer_cback
1531 *
1532 * Description      Process the timeout when SRC is accepting connection
1533 *                  and SNK did not start signalling.
1534 *
1535 * Returns          void
1536 *
1537 ******************************************************************************/
1538static void bta_av_accept_signalling_timer_cback(void* data) {
1539  uint32_t inx = PTR_TO_UINT(data);
1540  tBTA_AV_CB* p_cb = &bta_av_cb;
1541  tBTA_AV_SCB* p_scb = NULL;
1542  if (inx < BTA_AV_NUM_STRS) {
1543    p_scb = p_cb->p_scb[inx];
1544  }
1545  if (p_scb) {
1546    APPL_TRACE_DEBUG("%s coll_mask = 0x%02X", __func__, p_scb->coll_mask);
1547
1548    if (p_scb->coll_mask & BTA_AV_COLL_INC_TMR) {
1549      p_scb->coll_mask &= ~BTA_AV_COLL_INC_TMR;
1550
1551      if (bta_av_is_scb_opening(p_scb)) {
1552        APPL_TRACE_DEBUG("%s: stream state opening: SDP started = %d", __func__,
1553                         p_scb->sdp_discovery_started);
1554        if (p_scb->sdp_discovery_started) {
1555          /* We are still doing SDP. Run the timer again. */
1556          p_scb->coll_mask |= BTA_AV_COLL_INC_TMR;
1557
1558          alarm_set_on_queue(p_cb->accept_signalling_timer,
1559                             BTA_AV_ACCEPT_SIGNALLING_TIMEOUT_MS,
1560                             bta_av_accept_signalling_timer_cback,
1561                             UINT_TO_PTR(inx), btu_bta_alarm_queue);
1562        } else {
1563          /* SNK did not start signalling, resume signalling process. */
1564          bta_av_discover_req(p_scb, NULL);
1565        }
1566      } else if (bta_av_is_scb_incoming(p_scb)) {
1567        /* Stay in incoming state if SNK does not start signalling */
1568
1569        APPL_TRACE_DEBUG("%s: stream state incoming", __func__);
1570        /* API open was called right after SNK opened L2C connection. */
1571        if (p_scb->coll_mask & BTA_AV_COLL_API_CALLED) {
1572          p_scb->coll_mask &= ~BTA_AV_COLL_API_CALLED;
1573
1574          /* BTA_AV_API_OPEN_EVT */
1575          tBTA_AV_API_OPEN* p_buf =
1576              (tBTA_AV_API_OPEN*)osi_malloc(sizeof(tBTA_AV_API_OPEN));
1577          memcpy(p_buf, &(p_scb->open_api), sizeof(tBTA_AV_API_OPEN));
1578          bta_sys_sendmsg(p_buf);
1579        }
1580      }
1581    }
1582  }
1583}
1584
1585/*******************************************************************************
1586 *
1587 * Function         bta_av_check_peer_features
1588 *
1589 * Description      check supported features on the peer device from the SDP
1590 *                  record and return the feature mask
1591 *
1592 * Returns          tBTA_AV_FEAT peer device feature mask
1593 *
1594 ******************************************************************************/
1595tBTA_AV_FEAT bta_av_check_peer_features(uint16_t service_uuid) {
1596  tBTA_AV_FEAT peer_features = 0;
1597  tBTA_AV_CB* p_cb = &bta_av_cb;
1598  tSDP_DISC_REC* p_rec = NULL;
1599  tSDP_DISC_ATTR* p_attr;
1600  uint16_t peer_rc_version = 0;
1601  uint16_t categories = 0;
1602
1603  APPL_TRACE_DEBUG("bta_av_check_peer_features service_uuid:x%x", service_uuid);
1604  /* loop through all records we found */
1605  while (true) {
1606    /* get next record; if none found, we're done */
1607    p_rec = SDP_FindServiceInDb(p_cb->p_disc_db, service_uuid, p_rec);
1608    if (p_rec == NULL) {
1609      break;
1610    }
1611
1612    if ((SDP_FindAttributeInRec(p_rec, ATTR_ID_SERVICE_CLASS_ID_LIST)) !=
1613        NULL) {
1614      /* find peer features */
1615      if (SDP_FindServiceInDb(p_cb->p_disc_db, UUID_SERVCLASS_AV_REMOTE_CONTROL,
1616                              NULL)) {
1617        peer_features |= BTA_AV_FEAT_RCCT;
1618      }
1619      if (SDP_FindServiceInDb(p_cb->p_disc_db,
1620                              UUID_SERVCLASS_AV_REM_CTRL_TARGET, NULL)) {
1621        peer_features |= BTA_AV_FEAT_RCTG;
1622      }
1623    }
1624
1625    if ((SDP_FindAttributeInRec(p_rec, ATTR_ID_BT_PROFILE_DESC_LIST)) != NULL) {
1626      /* get profile version (if failure, version parameter is not updated) */
1627      SDP_FindProfileVersionInRec(p_rec, UUID_SERVCLASS_AV_REMOTE_CONTROL,
1628                                  &peer_rc_version);
1629      APPL_TRACE_DEBUG("peer_rc_version 0x%x", peer_rc_version);
1630
1631      if (peer_rc_version >= AVRC_REV_1_3)
1632        peer_features |= (BTA_AV_FEAT_VENDOR | BTA_AV_FEAT_METADATA);
1633
1634      if (peer_rc_version >= AVRC_REV_1_4) {
1635        /* get supported categories */
1636        p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SUPPORTED_FEATURES);
1637        if (p_attr != NULL) {
1638          categories = p_attr->attr_value.v.u16;
1639          if (categories & AVRC_SUPF_CT_CAT2)
1640            peer_features |= (BTA_AV_FEAT_ADV_CTRL);
1641          if (categories & AVRC_SUPF_CT_BROWSE)
1642            peer_features |= (BTA_AV_FEAT_BROWSE);
1643        }
1644      }
1645    }
1646  }
1647  APPL_TRACE_DEBUG("peer_features:x%x", peer_features);
1648  return peer_features;
1649}
1650
1651/*******************************************************************************
1652 *
1653 * Function         bta_avk_check_peer_features
1654 *
1655 * Description      check supported features on the peer device from the SDP
1656 *                  record and return the feature mask
1657 *
1658 * Returns          tBTA_AV_FEAT peer device feature mask
1659 *
1660 ******************************************************************************/
1661tBTA_AV_FEAT bta_avk_check_peer_features(uint16_t service_uuid) {
1662  tBTA_AV_FEAT peer_features = 0;
1663  tBTA_AV_CB* p_cb = &bta_av_cb;
1664
1665  APPL_TRACE_DEBUG("%s service_uuid:x%x", __func__, service_uuid);
1666
1667  /* loop through all records we found */
1668  tSDP_DISC_REC* p_rec =
1669      SDP_FindServiceInDb(p_cb->p_disc_db, service_uuid, NULL);
1670  while (p_rec) {
1671    APPL_TRACE_DEBUG("%s found Service record for x%x", __func__, service_uuid);
1672
1673    if ((SDP_FindAttributeInRec(p_rec, ATTR_ID_SERVICE_CLASS_ID_LIST)) !=
1674        NULL) {
1675      /* find peer features */
1676      if (SDP_FindServiceInDb(p_cb->p_disc_db, UUID_SERVCLASS_AV_REMOTE_CONTROL,
1677                              NULL)) {
1678        peer_features |= BTA_AV_FEAT_RCCT;
1679      }
1680      if (SDP_FindServiceInDb(p_cb->p_disc_db,
1681                              UUID_SERVCLASS_AV_REM_CTRL_TARGET, NULL)) {
1682        peer_features |= BTA_AV_FEAT_RCTG;
1683      }
1684    }
1685
1686    if ((SDP_FindAttributeInRec(p_rec, ATTR_ID_BT_PROFILE_DESC_LIST)) != NULL) {
1687      /* get profile version (if failure, version parameter is not updated) */
1688      uint16_t peer_rc_version = 0;
1689      bool val = SDP_FindProfileVersionInRec(
1690          p_rec, UUID_SERVCLASS_AV_REMOTE_CONTROL, &peer_rc_version);
1691      APPL_TRACE_DEBUG("%s peer_rc_version for TG 0x%x, profile_found %d",
1692                       __func__, peer_rc_version, val);
1693
1694      if (peer_rc_version >= AVRC_REV_1_3)
1695        peer_features |= (BTA_AV_FEAT_VENDOR | BTA_AV_FEAT_METADATA);
1696
1697      /*
1698       * Though Absolute Volume came after in 1.4 and above, but there are few
1699       * devices
1700       * in market which supports absolute Volume and they are still 1.3
1701       * TO avoid IOT issuses with those devices, we check for 1.3 as minimum
1702       * version
1703       */
1704      if (peer_rc_version >= AVRC_REV_1_3) {
1705        /* get supported features */
1706        tSDP_DISC_ATTR* p_attr =
1707            SDP_FindAttributeInRec(p_rec, ATTR_ID_SUPPORTED_FEATURES);
1708        if (p_attr != NULL) {
1709          uint16_t categories = p_attr->attr_value.v.u16;
1710          if (categories & AVRC_SUPF_CT_CAT2)
1711            peer_features |= (BTA_AV_FEAT_ADV_CTRL);
1712          if (categories & AVRC_SUPF_CT_APP_SETTINGS)
1713            peer_features |= (BTA_AV_FEAT_APP_SETTING);
1714          if (categories & AVRC_SUPF_CT_BROWSE)
1715            peer_features |= (BTA_AV_FEAT_BROWSE);
1716        }
1717      }
1718    }
1719    /* get next record; if none found, we're done */
1720    p_rec = SDP_FindServiceInDb(p_cb->p_disc_db, service_uuid, p_rec);
1721  }
1722  APPL_TRACE_DEBUG("%s peer_features:x%x", __func__, peer_features);
1723  return peer_features;
1724}
1725
1726/*******************************************************************************
1727 *
1728 * Function         bta_av_rc_disc_done
1729 *
1730 * Description      Handle AVRCP service discovery results.  If matching
1731 *                  service found, open AVRCP connection.
1732 *
1733 * Returns          void
1734 *
1735 ******************************************************************************/
1736void bta_av_rc_disc_done(UNUSED_ATTR tBTA_AV_DATA* p_data) {
1737  tBTA_AV_CB* p_cb = &bta_av_cb;
1738  tBTA_AV_SCB* p_scb = NULL;
1739  tBTA_AV_LCB* p_lcb;
1740  tBTA_AV_RC_OPEN rc_open;
1741  tBTA_AV_RC_FEAT rc_feat;
1742  uint8_t rc_handle;
1743  tBTA_AV_FEAT peer_features = 0; /* peer features mask */
1744
1745  APPL_TRACE_DEBUG("%s bta_av_rc_disc_done disc:x%x", __func__, p_cb->disc);
1746  if (!p_cb->disc) {
1747    return;
1748  }
1749
1750  if ((p_cb->disc & BTA_AV_CHNL_MSK) == BTA_AV_CHNL_MSK) {
1751    /* this is the rc handle/index to tBTA_AV_RCB */
1752    rc_handle = p_cb->disc & (~BTA_AV_CHNL_MSK);
1753  } else {
1754    /* Validate array index*/
1755    if (((p_cb->disc & BTA_AV_HNDL_MSK) - 1) < BTA_AV_NUM_STRS) {
1756      p_scb = p_cb->p_scb[(p_cb->disc & BTA_AV_HNDL_MSK) - 1];
1757    }
1758    if (p_scb) {
1759      rc_handle = p_scb->rc_handle;
1760    } else {
1761      p_cb->disc = 0;
1762      return;
1763    }
1764  }
1765
1766  APPL_TRACE_DEBUG("%s rc_handle %d", __func__, rc_handle);
1767#if (BTA_AV_SINK_INCLUDED == TRUE)
1768  if (p_cb->sdp_a2dp_snk_handle) {
1769    /* This is Sink + CT + TG(Abs Vol) */
1770    peer_features =
1771        bta_avk_check_peer_features(UUID_SERVCLASS_AV_REM_CTRL_TARGET);
1772    APPL_TRACE_DEBUG("%s populating rem ctrl target features %d", __func__,
1773                     peer_features);
1774    if (BTA_AV_FEAT_ADV_CTRL &
1775        bta_avk_check_peer_features(UUID_SERVCLASS_AV_REMOTE_CONTROL))
1776      peer_features |= (BTA_AV_FEAT_ADV_CTRL | BTA_AV_FEAT_RCCT);
1777  } else
1778#endif
1779      if (p_cb->sdp_a2dp_handle) {
1780    /* check peer version and whether support CT and TG role */
1781    peer_features =
1782        bta_av_check_peer_features(UUID_SERVCLASS_AV_REMOTE_CONTROL);
1783    if ((p_cb->features & BTA_AV_FEAT_ADV_CTRL) &&
1784        ((peer_features & BTA_AV_FEAT_ADV_CTRL) == 0)) {
1785      /* if we support advance control and peer does not, check their support on
1786       * TG role
1787       * some implementation uses 1.3 on CT ans 1.4 on TG */
1788      peer_features |=
1789          bta_av_check_peer_features(UUID_SERVCLASS_AV_REM_CTRL_TARGET);
1790    }
1791  }
1792
1793  p_cb->disc = 0;
1794  osi_free_and_reset((void**)&p_cb->p_disc_db);
1795
1796  APPL_TRACE_DEBUG("peer_features 0x%x, features 0x%x", peer_features,
1797                   p_cb->features);
1798
1799  /* if we have no rc connection */
1800  if (rc_handle == BTA_AV_RC_HANDLE_NONE) {
1801    if (p_scb) {
1802      /* if peer remote control service matches ours and USE_RC is true */
1803      if ((((p_cb->features & BTA_AV_FEAT_RCCT) &&
1804            (peer_features & BTA_AV_FEAT_RCTG)) ||
1805           ((p_cb->features & BTA_AV_FEAT_RCTG) &&
1806            (peer_features & BTA_AV_FEAT_RCCT)))) {
1807        p_lcb = bta_av_find_lcb(p_scb->peer_addr, BTA_AV_LCB_FIND);
1808        if (p_lcb) {
1809          rc_handle = bta_av_rc_create(p_cb, AVCT_INT,
1810                                       (uint8_t)(p_scb->hdi + 1), p_lcb->lidx);
1811          p_cb->rcb[rc_handle].peer_features = peer_features;
1812        } else {
1813          APPL_TRACE_ERROR("can not find LCB!!");
1814        }
1815      } else if (p_scb->use_rc) {
1816        /* can not find AVRC on peer device. report failure */
1817        p_scb->use_rc = false;
1818        bdcpy(rc_open.peer_addr, p_scb->peer_addr);
1819        rc_open.peer_features = 0;
1820        rc_open.status = BTA_AV_FAIL_SDP;
1821        (*p_cb->p_cback)(BTA_AV_RC_OPEN_EVT, (tBTA_AV*)&rc_open);
1822      }
1823    }
1824  } else {
1825    p_cb->rcb[rc_handle].peer_features = peer_features;
1826    rc_feat.rc_handle = rc_handle;
1827    rc_feat.peer_features = peer_features;
1828    if (p_scb == NULL) {
1829      /*
1830       * In case scb is not created by the time we are done with SDP
1831       * we still need to send RC feature event. So we need to get BD
1832       * from Message
1833       */
1834      bdcpy(rc_feat.peer_addr, p_cb->lcb[p_cb->rcb[rc_handle].lidx].addr);
1835    } else
1836      bdcpy(rc_feat.peer_addr, p_scb->peer_addr);
1837    (*p_cb->p_cback)(BTA_AV_RC_FEAT_EVT, (tBTA_AV*)&rc_feat);
1838  }
1839}
1840
1841/*******************************************************************************
1842 *
1843 * Function         bta_av_rc_closed
1844 *
1845 * Description      Set AVRCP state to closed.
1846 *
1847 * Returns          void
1848 *
1849 ******************************************************************************/
1850void bta_av_rc_closed(tBTA_AV_DATA* p_data) {
1851  tBTA_AV_CB* p_cb = &bta_av_cb;
1852  tBTA_AV_RC_CLOSE rc_close;
1853  tBTA_AV_RC_CONN_CHG* p_msg = (tBTA_AV_RC_CONN_CHG*)p_data;
1854  tBTA_AV_RCB* p_rcb;
1855  tBTA_AV_SCB* p_scb;
1856  int i;
1857  bool conn = false;
1858  tBTA_AV_LCB* p_lcb;
1859
1860  rc_close.rc_handle = BTA_AV_RC_HANDLE_NONE;
1861  p_scb = NULL;
1862  APPL_TRACE_DEBUG("bta_av_rc_closed rc_handle:%d", p_msg->handle);
1863  for (i = 0; i < BTA_AV_NUM_RCB; i++) {
1864    p_rcb = &p_cb->rcb[i];
1865    APPL_TRACE_DEBUG("bta_av_rc_closed rcb[%d] rc_handle:%d, status=0x%x", i,
1866                     p_rcb->handle, p_rcb->status);
1867    if (p_rcb->handle == p_msg->handle) {
1868      rc_close.rc_handle = i;
1869      p_rcb->status &= ~BTA_AV_RC_CONN_MASK;
1870      p_rcb->peer_features = 0;
1871      APPL_TRACE_DEBUG("       shdl:%d, lidx:%d", p_rcb->shdl, p_rcb->lidx);
1872      if (p_rcb->shdl) {
1873        if ((p_rcb->shdl - 1) < BTA_AV_NUM_STRS) {
1874          p_scb = bta_av_cb.p_scb[p_rcb->shdl - 1];
1875        }
1876        if (p_scb) {
1877          bdcpy(rc_close.peer_addr, p_scb->peer_addr);
1878          if (p_scb->rc_handle == p_rcb->handle)
1879            p_scb->rc_handle = BTA_AV_RC_HANDLE_NONE;
1880          APPL_TRACE_DEBUG("shdl:%d, srch:%d", p_rcb->shdl, p_scb->rc_handle);
1881        }
1882        p_rcb->shdl = 0;
1883      } else if (p_rcb->lidx == (BTA_AV_NUM_LINKS + 1)) {
1884        /* if the RCB uses the extra LCB, use the addr for event and clean it */
1885        p_lcb = &p_cb->lcb[BTA_AV_NUM_LINKS];
1886        bdcpy(rc_close.peer_addr, p_msg->peer_addr);
1887        APPL_TRACE_DEBUG("rc_only closed bd_addr:%02x-%02x-%02x-%02x-%02x-%02x",
1888                         p_msg->peer_addr[0], p_msg->peer_addr[1],
1889                         p_msg->peer_addr[2], p_msg->peer_addr[3],
1890                         p_msg->peer_addr[4], p_msg->peer_addr[5]);
1891        p_lcb->conn_msk = 0;
1892        p_lcb->lidx = 0;
1893      }
1894      p_rcb->lidx = 0;
1895
1896      if ((p_rcb->status & BTA_AV_RC_ROLE_MASK) == BTA_AV_RC_ROLE_INT) {
1897        /* AVCT CCB is deallocated */
1898        p_rcb->handle = BTA_AV_RC_HANDLE_NONE;
1899        p_rcb->status = 0;
1900      } else {
1901        /* AVCT CCB is still there. dealloc */
1902        bta_av_del_rc(p_rcb);
1903
1904        /* if the AVRCP is no longer listening, create the listening channel */
1905        if (bta_av_cb.rc_acp_handle == BTA_AV_RC_HANDLE_NONE &&
1906            bta_av_cb.features & BTA_AV_FEAT_RCTG)
1907          bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1);
1908      }
1909    } else if ((p_rcb->handle != BTA_AV_RC_HANDLE_NONE) &&
1910               (p_rcb->status & BTA_AV_RC_CONN_MASK)) {
1911      /* at least one channel is still connected */
1912      conn = true;
1913    }
1914  }
1915
1916  if (!conn) {
1917    /* no AVRC channels are connected, go back to INIT state */
1918    bta_av_sm_execute(p_cb, BTA_AV_AVRC_NONE_EVT, NULL);
1919  }
1920
1921  if (rc_close.rc_handle == BTA_AV_RC_HANDLE_NONE) {
1922    rc_close.rc_handle = p_msg->handle;
1923    bdcpy(rc_close.peer_addr, p_msg->peer_addr);
1924  }
1925  (*p_cb->p_cback)(BTA_AV_RC_CLOSE_EVT, (tBTA_AV*)&rc_close);
1926}
1927
1928/*******************************************************************************
1929 *
1930 * Function         bta_av_rc_browse_opened
1931 *
1932 * Description      AVRC browsing channel is opened
1933 *
1934 * Returns          void
1935 *
1936 ******************************************************************************/
1937void bta_av_rc_browse_opened(tBTA_AV_DATA* p_data) {
1938  tBTA_AV_CB* p_cb = &bta_av_cb;
1939  tBTA_AV_RC_CONN_CHG* p_msg = (tBTA_AV_RC_CONN_CHG*)p_data;
1940  tBTA_AV_RC_BROWSE_OPEN rc_browse_open;
1941
1942  APPL_TRACE_DEBUG(
1943      "bta_av_rc_browse_opened bd_addr:%02x-%02x-%02x-%02x-%02x-%02x",
1944      p_msg->peer_addr[0], p_msg->peer_addr[1], p_msg->peer_addr[2],
1945      p_msg->peer_addr[3], p_msg->peer_addr[4], p_msg->peer_addr[5]);
1946  APPL_TRACE_DEBUG("bta_av_rc_browse_opened rc_handle:%d", p_msg->handle);
1947
1948  rc_browse_open.status = BTA_AV_SUCCESS;
1949  rc_browse_open.rc_handle = p_msg->handle;
1950  bdcpy(rc_browse_open.peer_addr, p_msg->peer_addr);
1951
1952  (*p_cb->p_cback)(BTA_AV_RC_BROWSE_OPEN_EVT, (tBTA_AV*)&rc_browse_open);
1953}
1954
1955/*******************************************************************************
1956 *
1957 * Function         bta_av_rc_browse_closed
1958 *
1959 * Description      AVRC browsing channel is closed
1960 *
1961 * Returns          void
1962 *
1963 ******************************************************************************/
1964void bta_av_rc_browse_closed(tBTA_AV_DATA* p_data) {
1965  tBTA_AV_CB* p_cb = &bta_av_cb;
1966  tBTA_AV_RC_CONN_CHG* p_msg = (tBTA_AV_RC_CONN_CHG*)p_data;
1967  tBTA_AV_RC_BROWSE_CLOSE rc_browse_close;
1968
1969  APPL_TRACE_DEBUG(
1970      "bta_av_rc_browse_closed bd_addr:%02x-%02x-%02x-%02x-%02x-%02x",
1971      p_msg->peer_addr[0], p_msg->peer_addr[1], p_msg->peer_addr[2],
1972      p_msg->peer_addr[3], p_msg->peer_addr[4], p_msg->peer_addr[5]);
1973  APPL_TRACE_DEBUG("bta_av_rc_browse_closed rc_handle:%d", p_msg->handle);
1974
1975  rc_browse_close.rc_handle = p_msg->handle;
1976  bdcpy(rc_browse_close.peer_addr, p_msg->peer_addr);
1977
1978  (*p_cb->p_cback)(BTA_AV_RC_BROWSE_CLOSE_EVT, (tBTA_AV*)&rc_browse_close);
1979}
1980
1981/*******************************************************************************
1982 *
1983 * Function         bta_av_rc_disc
1984 *
1985 * Description      start AVRC SDP discovery.
1986 *
1987 * Returns          void
1988 *
1989 ******************************************************************************/
1990void bta_av_rc_disc(uint8_t disc) {
1991  tBTA_AV_CB* p_cb = &bta_av_cb;
1992  tAVRC_SDP_DB_PARAMS db_params;
1993  uint16_t attr_list[] = {ATTR_ID_SERVICE_CLASS_ID_LIST,
1994                          ATTR_ID_BT_PROFILE_DESC_LIST,
1995                          ATTR_ID_SUPPORTED_FEATURES};
1996  uint8_t hdi;
1997  tBTA_AV_SCB* p_scb;
1998  uint8_t* p_addr = NULL;
1999  uint8_t rc_handle;
2000
2001  APPL_TRACE_DEBUG("bta_av_rc_disc 0x%x, %d", disc, bta_av_cb.disc);
2002  if ((bta_av_cb.disc != 0) || (disc == 0)) return;
2003
2004  if ((disc & BTA_AV_CHNL_MSK) == BTA_AV_CHNL_MSK) {
2005    /* this is the rc handle/index to tBTA_AV_RCB */
2006    rc_handle = disc & (~BTA_AV_CHNL_MSK);
2007    if (p_cb->rcb[rc_handle].lidx) {
2008      p_addr = p_cb->lcb[p_cb->rcb[rc_handle].lidx - 1].addr;
2009    }
2010  } else {
2011    hdi = (disc & BTA_AV_HNDL_MSK) - 1;
2012    p_scb = p_cb->p_scb[hdi];
2013
2014    if (p_scb) {
2015      APPL_TRACE_DEBUG("rc_handle %d", p_scb->rc_handle);
2016      p_addr = p_scb->peer_addr;
2017    }
2018  }
2019
2020  if (p_addr) {
2021    /* allocate discovery database */
2022    if (p_cb->p_disc_db == NULL)
2023      p_cb->p_disc_db = (tSDP_DISCOVERY_DB*)osi_malloc(BTA_AV_DISC_BUF_SIZE);
2024
2025    /* set up parameters */
2026    db_params.db_len = BTA_AV_DISC_BUF_SIZE;
2027    db_params.num_attr = 3;
2028    db_params.p_db = p_cb->p_disc_db;
2029    db_params.p_attrs = attr_list;
2030
2031    /* searching for UUID_SERVCLASS_AV_REMOTE_CONTROL gets both TG and CT */
2032    if (AVRC_FindService(UUID_SERVCLASS_AV_REMOTE_CONTROL, p_addr, &db_params,
2033                         bta_av_avrc_sdp_cback) == AVRC_SUCCESS) {
2034      p_cb->disc = disc;
2035      APPL_TRACE_DEBUG("disc %d", p_cb->disc);
2036    }
2037  }
2038}
2039
2040/*******************************************************************************
2041 *
2042 * Function         bta_av_dereg_comp
2043 *
2044 * Description      deregister complete. free the stream control block.
2045 *
2046 * Returns          void
2047 *
2048 ******************************************************************************/
2049void bta_av_dereg_comp(tBTA_AV_DATA* p_data) {
2050  tBTA_AV_CB* p_cb = &bta_av_cb;
2051  tBTA_AV_SCB* p_scb;
2052  tBTA_UTL_COD cod;
2053  uint8_t mask;
2054  BT_HDR* p_buf;
2055
2056  /* find the stream control block */
2057  p_scb = bta_av_hndl_to_scb(p_data->hdr.layer_specific);
2058
2059  if (p_scb) {
2060    APPL_TRACE_DEBUG("deregistered %d(h%d)", p_scb->chnl, p_scb->hndl);
2061    mask = BTA_AV_HNDL_TO_MSK(p_scb->hdi);
2062    if (p_scb->chnl == BTA_AV_CHNL_AUDIO) {
2063      p_cb->reg_audio &= ~mask;
2064      if ((p_cb->conn_audio & mask) && bta_av_cb.audio_open_cnt) {
2065        /* this channel is still marked as open. decrease the count */
2066        bta_av_cb.audio_open_cnt--;
2067      }
2068      p_cb->conn_audio &= ~mask;
2069
2070      if (p_scb->q_tag == BTA_AV_Q_TAG_STREAM && p_scb->a2dp_list) {
2071        /* make sure no buffers are in a2dp_list */
2072        while (!list_is_empty(p_scb->a2dp_list)) {
2073          p_buf = (BT_HDR*)list_front(p_scb->a2dp_list);
2074          list_remove(p_scb->a2dp_list, p_buf);
2075          osi_free(p_buf);
2076        }
2077      }
2078
2079      /* remove the A2DP SDP record, if no more audio stream is left */
2080      if (!p_cb->reg_audio) {
2081#if (BTA_AR_INCLUDED == TRUE)
2082        bta_ar_dereg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, BTA_ID_AV);
2083#endif
2084        if (p_cb->sdp_a2dp_handle) {
2085          bta_av_del_sdp_rec(&p_cb->sdp_a2dp_handle);
2086          p_cb->sdp_a2dp_handle = 0;
2087          bta_sys_remove_uuid(UUID_SERVCLASS_AUDIO_SOURCE);
2088        }
2089
2090#if (BTA_AV_SINK_INCLUDED == TRUE)
2091        if (p_cb->sdp_a2dp_snk_handle) {
2092          bta_av_del_sdp_rec(&p_cb->sdp_a2dp_snk_handle);
2093          p_cb->sdp_a2dp_snk_handle = 0;
2094          bta_sys_remove_uuid(UUID_SERVCLASS_AUDIO_SINK);
2095        }
2096#endif
2097      }
2098    } else {
2099      p_cb->reg_video &= ~mask;
2100      /* make sure that this channel is not connected */
2101      p_cb->conn_video &= ~mask;
2102      /* remove the VDP SDP record, (only one video stream at most) */
2103      bta_av_del_sdp_rec(&p_cb->sdp_vdp_handle);
2104      bta_sys_remove_uuid(UUID_SERVCLASS_VIDEO_SOURCE);
2105    }
2106
2107    /* make sure that the timer is not active */
2108    alarm_cancel(p_scb->avrc_ct_timer);
2109    osi_free_and_reset((void**)&p_cb->p_scb[p_scb->hdi]);
2110  }
2111
2112  APPL_TRACE_DEBUG("audio 0x%x, video: 0x%x, disable:%d", p_cb->reg_audio,
2113                   p_cb->reg_video, p_cb->disabling);
2114  /* if no stream control block is active */
2115  if ((p_cb->reg_audio + p_cb->reg_video) == 0) {
2116#if (BTA_AR_INCLUDED == TRUE)
2117    /* deregister from AVDT */
2118    bta_ar_dereg_avdt(BTA_ID_AV);
2119
2120    /* deregister from AVCT */
2121    bta_ar_dereg_avrc(UUID_SERVCLASS_AV_REM_CTRL_TARGET, BTA_ID_AV);
2122    bta_ar_dereg_avct(BTA_ID_AV);
2123#endif
2124
2125    if (p_cb->disabling) {
2126      p_cb->disabling = false;
2127      bta_av_cb.features = 0;
2128    }
2129
2130    /* Clear the Capturing service class bit */
2131    cod.service = BTM_COD_SERVICE_CAPTURING;
2132    utl_set_device_class(&cod, BTA_UTL_CLR_COD_SERVICE_CLASS);
2133  }
2134}
2135