1 /******************************************************************************
2  *
3  *  Copyright (C) 2002-2012 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 module contains API of the audio/video distribution transport
22  *  protocol.
23  *
24  ******************************************************************************/
25 
26 #include <string.h>
27 #include "bt_types.h"
28 #include "bt_target.h"
29 #include "avdt_api.h"
30 #include "avdtc_api.h"
31 #include "avdt_int.h"
32 #include "l2c_api.h"
33 #include "btm_api.h"
34 #include "btu.h"
35 
36 
37 /* Control block for AVDT */
38 #if AVDT_DYNAMIC_MEMORY == FALSE
39 tAVDT_CB avdt_cb;
40 #endif
41 
42 
43 /*******************************************************************************
44 **
45 ** Function         avdt_process_timeout
46 **
47 ** Description      This function is called by BTU when an AVDTP timer
48 **                  expires.  The function sends a timer event to the
49 **                  appropriate CCB or SCB state machine.
50 **
51 **                  This function is for use internal to the stack only.
52 **
53 **
54 ** Returns          void
55 **
56 *******************************************************************************/
avdt_process_timeout(TIMER_LIST_ENT * p_tle)57 void avdt_process_timeout(TIMER_LIST_ENT *p_tle)
58 {
59     UINT8   event = 0;
60     UINT8   err_code = AVDT_ERR_TIMEOUT;
61 
62     switch (p_tle->event)
63     {
64         case BTU_TTYPE_AVDT_CCB_RET:
65             event = AVDT_CCB_RET_TOUT_EVT + AVDT_CCB_MKR;
66             break;
67 
68         case BTU_TTYPE_AVDT_CCB_RSP:
69             event = AVDT_CCB_RSP_TOUT_EVT + AVDT_CCB_MKR;
70             break;
71 
72         case BTU_TTYPE_AVDT_CCB_IDLE:
73             event = AVDT_CCB_IDLE_TOUT_EVT + AVDT_CCB_MKR;
74             break;
75 
76         case BTU_TTYPE_AVDT_SCB_TC:
77             event = AVDT_SCB_TC_TOUT_EVT;
78             break;
79 
80         default:
81             break;
82     }
83 
84     if (event & AVDT_CCB_MKR)
85     {
86         avdt_ccb_event((tAVDT_CCB *) p_tle->param, (UINT8) (event & ~AVDT_CCB_MKR),
87                        (tAVDT_CCB_EVT *) &err_code);
88     }
89     else
90     {
91         avdt_scb_event((tAVDT_SCB *) p_tle->param, event, NULL);
92     }
93 }
94 
95 /*******************************************************************************
96 **
97 ** Function         AVDT_Register
98 **
99 ** Description      This is the system level registration function for the
100 **                  AVDTP protocol.  This function initializes AVDTP and
101 **                  prepares the protocol stack for its use.  This function
102 **                  must be called once by the system or platform using AVDTP
103 **                  before the other functions of the API an be used.
104 **
105 **
106 ** Returns          void
107 **
108 *******************************************************************************/
AVDT_Register(tAVDT_REG * p_reg,tAVDT_CTRL_CBACK * p_cback)109 void AVDT_Register(tAVDT_REG *p_reg, tAVDT_CTRL_CBACK *p_cback)
110 {
111     /* register PSM with L2CAP */
112     L2CA_Register(AVDT_PSM, (tL2CAP_APPL_INFO *) &avdt_l2c_appl);
113 
114     /* set security level */
115     BTM_SetSecurityLevel(TRUE, "", BTM_SEC_SERVICE_AVDTP, p_reg->sec_mask,
116         AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_SIG);
117     BTM_SetSecurityLevel(FALSE, "", BTM_SEC_SERVICE_AVDTP, p_reg->sec_mask,
118         AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_SIG);
119 
120     /* do not use security on the media channel */
121     BTM_SetSecurityLevel(TRUE, "", BTM_SEC_SERVICE_AVDTP_NOSEC, BTM_SEC_NONE,
122         AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_MEDIA);
123     BTM_SetSecurityLevel(FALSE, "", BTM_SEC_SERVICE_AVDTP_NOSEC, BTM_SEC_NONE,
124         AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_MEDIA);
125 
126 #if AVDT_REPORTING == TRUE
127     /* do not use security on the reporting channel */
128     BTM_SetSecurityLevel(TRUE, "", BTM_SEC_SERVICE_AVDTP_NOSEC, BTM_SEC_NONE,
129         AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_REPORT);
130     BTM_SetSecurityLevel(FALSE, "", BTM_SEC_SERVICE_AVDTP_NOSEC, BTM_SEC_NONE,
131         AVDT_PSM, BTM_SEC_PROTO_AVDT, AVDT_CHAN_REPORT);
132 #endif
133 
134     /* initialize AVDTP data structures */
135     avdt_scb_init();
136     avdt_ccb_init();
137     avdt_ad_init();
138 
139     /* copy registration struct */
140     memcpy(&avdt_cb.rcb, p_reg, sizeof(tAVDT_REG));
141     avdt_cb.p_conn_cback = p_cback;
142 }
143 
144 /*******************************************************************************
145 **
146 ** Function         AVDT_Deregister
147 **
148 ** Description      This function is called to deregister use AVDTP protocol.
149 **                  It is called when AVDTP is no longer being used by any
150 **                  application in the system.  Before this function can be
151 **                  called, all streams must be removed with AVDT_RemoveStream().
152 **
153 **
154 ** Returns          void
155 **
156 *******************************************************************************/
AVDT_Deregister(void)157 void AVDT_Deregister(void)
158 {
159     /* deregister PSM with L2CAP */
160     L2CA_Deregister(AVDT_PSM);
161 }
162 
163 /*******************************************************************************
164 **
165 ** Function         AVDT_SINK_Activate
166 **
167 ** Description      Activate SEP of A2DP Sink. In Use parameter is adjusted.
168 **                  In Use will be made false in case of activation. A2DP SRC
169 **                  will receive in_use as false and can open A2DP Sink
170 **                  connection
171 **
172 ** Returns          void.
173 **
174 *******************************************************************************/
AVDT_SINK_Activate()175 void AVDT_SINK_Activate()
176 {
177     tAVDT_SCB           *p_scb = &avdt_cb.scb[0];
178     int                 i;
179     AVDT_TRACE_DEBUG("AVDT_SINK_Activate");
180     /* for all allocated scbs */
181     for (i = 0; i < AVDT_NUM_SEPS; i++, p_scb++)
182     {
183         if ((p_scb->allocated) && (p_scb->cs.tsep == AVDT_TSEP_SNK))
184         {
185             AVDT_TRACE_DEBUG("AVDT_SINK_Activate found scb");
186             p_scb->sink_activated = TRUE;
187             /* update in_use */
188             p_scb->in_use = FALSE;
189             break;
190         }
191     }
192 }
193 
194 /*******************************************************************************
195 **
196 ** Function         AVDT_SINK_Deactivate
197 **
198 ** Description      Deactivate SEP of A2DP Sink. In Use parameter is adjusted.
199 **                  In Use will be made TRUE in case of activation. A2DP SRC
200 **                  will receive in_use as true and will not open A2DP Sink
201 **                  connection
202 **
203 ** Returns          void.
204 **
205 *******************************************************************************/
AVDT_SINK_Deactivate()206 void AVDT_SINK_Deactivate()
207 {
208     tAVDT_SCB           *p_scb = &avdt_cb.scb[0];
209     int                 i;
210     AVDT_TRACE_DEBUG("AVDT_SINK_Deactivate");
211     /* for all allocated scbs */
212     for (i = 0; i < AVDT_NUM_SEPS; i++, p_scb++)
213     {
214         if ((p_scb->allocated) && (p_scb->cs.tsep == AVDT_TSEP_SNK))
215         {
216             AVDT_TRACE_DEBUG("AVDT_SINK_Deactivate, found scb");
217             p_scb->sink_activated = FALSE;
218             /* update in_use */
219             p_scb->in_use = TRUE;
220             break;
221         }
222     }
223 }
224 
AVDT_AbortReq(UINT8 handle)225 void AVDT_AbortReq(UINT8 handle)
226 {
227     AVDT_TRACE_ERROR("%s", __func__);
228 
229     tAVDT_SCB *p_scb = avdt_scb_by_hdl(handle);
230     if (p_scb != NULL)
231     {
232         avdt_scb_event(p_scb, AVDT_SCB_API_ABORT_REQ_EVT, NULL);
233     } else {
234         AVDT_TRACE_ERROR("%s Improper SCB, can not abort the stream", __func__);
235     }
236 }
237 
238 /*******************************************************************************
239 **
240 ** Function         AVDT_CreateStream
241 **
242 ** Description      Create a stream endpoint.  After a stream endpoint is
243 **                  created an application can initiate a connection between
244 **                  this endpoint and an endpoint on a peer device.  In
245 **                  addition, a peer device can discover, get the capabilities,
246 **                  and connect to this endpoint.
247 **
248 **
249 ** Returns          AVDT_SUCCESS if successful, otherwise error.
250 **
251 *******************************************************************************/
AVDT_CreateStream(UINT8 * p_handle,tAVDT_CS * p_cs)252 UINT16 AVDT_CreateStream(UINT8 *p_handle, tAVDT_CS *p_cs)
253 {
254     UINT16      result = AVDT_SUCCESS;
255     tAVDT_SCB   *p_scb;
256 
257     /* Verify parameters; if invalid, return failure */
258     if (((p_cs->cfg.psc_mask & (~AVDT_PSC)) != 0) || (p_cs->p_ctrl_cback == NULL))
259     {
260         result = AVDT_BAD_PARAMS;
261     }
262     /* Allocate scb; if no scbs, return failure */
263     else if ((p_scb = avdt_scb_alloc(p_cs)) == NULL)
264     {
265         result = AVDT_NO_RESOURCES;
266     }
267     else
268     {
269         *p_handle = avdt_scb_to_hdl(p_scb);
270     }
271     return result;
272 }
273 
274 /*******************************************************************************
275 **
276 ** Function         AVDT_RemoveStream
277 **
278 ** Description      Remove a stream endpoint.  This function is called when
279 **                  the application is no longer using a stream endpoint.
280 **                  If this function is called when the endpoint is connected
281 **                  the connection is closed and then the stream endpoint
282 **                  is removed.
283 **
284 **
285 ** Returns          AVDT_SUCCESS if successful, otherwise error.
286 **
287 *******************************************************************************/
AVDT_RemoveStream(UINT8 handle)288 UINT16 AVDT_RemoveStream(UINT8 handle)
289 {
290     UINT16      result = AVDT_SUCCESS;
291     tAVDT_SCB   *p_scb;
292 
293     /* look up scb */
294     if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
295     {
296         result = AVDT_BAD_HANDLE;
297     }
298     else
299     {
300         /* send remove event to scb */
301         avdt_scb_event(p_scb, AVDT_SCB_API_REMOVE_EVT, NULL);
302     }
303     return result;
304 }
305 
306 /*******************************************************************************
307 **
308 ** Function         AVDT_DiscoverReq
309 **
310 ** Description      This function initiates a connection to the AVDTP service
311 **                  on the peer device, if not already present, and discovers
312 **                  the stream endpoints on the peer device.  (Please note
313 **                  that AVDTP discovery is unrelated to SDP discovery).
314 **                  This function can be called at any time regardless of whether
315 **                  there is an AVDTP connection to the peer device.
316 **
317 **                  When discovery is complete, an AVDT_DISCOVER_CFM_EVT
318 **                  is sent to the application via its callback function.
319 **                  The application must not call AVDT_GetCapReq() or
320 **                  AVDT_DiscoverReq() again to the same device until
321 **                  discovery is complete.
322 **
323 **                  The memory addressed by sep_info is allocated by the
324 **                  application.  This memory is written to by AVDTP as part
325 **                  of the discovery procedure.  This memory must remain
326 **                  accessible until the application receives the
327 **                  AVDT_DISCOVER_CFM_EVT.
328 **
329 ** Returns          AVDT_SUCCESS if successful, otherwise error.
330 **
331 *******************************************************************************/
AVDT_DiscoverReq(BD_ADDR bd_addr,tAVDT_SEP_INFO * p_sep_info,UINT8 max_seps,tAVDT_CTRL_CBACK * p_cback)332 UINT16 AVDT_DiscoverReq(BD_ADDR bd_addr, tAVDT_SEP_INFO *p_sep_info,
333                         UINT8 max_seps, tAVDT_CTRL_CBACK *p_cback)
334 {
335     tAVDT_CCB       *p_ccb;
336     UINT16          result = AVDT_SUCCESS;
337     tAVDT_CCB_EVT   evt;
338 
339     /* find channel control block for this bd addr; if none, allocate one */
340     if ((p_ccb = avdt_ccb_by_bd(bd_addr)) == NULL)
341     {
342         if ((p_ccb = avdt_ccb_alloc(bd_addr)) == NULL)
343         {
344             /* could not allocate channel control block */
345             result = AVDT_NO_RESOURCES;
346         }
347     }
348 
349     if (result == AVDT_SUCCESS)
350     {
351         /* make sure no discovery or get capabilities req already in progress */
352         if (p_ccb->proc_busy)
353         {
354             result = AVDT_BUSY;
355         }
356         /* send event to ccb */
357         else
358         {
359             evt.discover.p_sep_info = p_sep_info;
360             evt.discover.num_seps = max_seps;
361             evt.discover.p_cback = p_cback;
362             avdt_ccb_event(p_ccb, AVDT_CCB_API_DISCOVER_REQ_EVT, &evt);
363         }
364     }
365     return result;
366 }
367 
368 /*******************************************************************************
369 **
370 ** Function         avdt_get_cap_req
371 **
372 ** Description      internal function to serve both AVDT_GetCapReq and
373 **                  AVDT_GetAllCapReq
374 **
375 ** Returns          AVDT_SUCCESS if successful, otherwise error.
376 **
377 *******************************************************************************/
avdt_get_cap_req(BD_ADDR bd_addr,tAVDT_CCB_API_GETCAP * p_evt)378 static UINT16 avdt_get_cap_req(BD_ADDR bd_addr, tAVDT_CCB_API_GETCAP *p_evt)
379 {
380     tAVDT_CCB       *p_ccb = NULL;
381     UINT16          result = AVDT_SUCCESS;
382 
383     /* verify SEID */
384     if ((p_evt->single.seid < AVDT_SEID_MIN) || (p_evt->single.seid > AVDT_SEID_MAX))
385     {
386         AVDT_TRACE_ERROR("seid: %d", p_evt->single.seid);
387         result = AVDT_BAD_PARAMS;
388     }
389     /* find channel control block for this bd addr; if none, allocate one */
390     else if ((p_ccb = avdt_ccb_by_bd(bd_addr)) == NULL)
391     {
392         if ((p_ccb = avdt_ccb_alloc(bd_addr)) == NULL)
393         {
394             /* could not allocate channel control block */
395             result = AVDT_NO_RESOURCES;
396         }
397     }
398 
399     if (result == AVDT_SUCCESS)
400     {
401         /* make sure no discovery or get capabilities req already in progress */
402         if (p_ccb->proc_busy)
403         {
404             result = AVDT_BUSY;
405         }
406         /* send event to ccb */
407         else
408         {
409             avdt_ccb_event(p_ccb, AVDT_CCB_API_GETCAP_REQ_EVT, (tAVDT_CCB_EVT *)p_evt);
410         }
411     }
412     return result;
413 }
414 
415 /*******************************************************************************
416 **
417 ** Function         AVDT_GetCapReq
418 **
419 ** Description      This function initiates a connection to the AVDTP service
420 **                  on the peer device, if not already present, and gets the
421 **                  capabilities of a stream endpoint on the peer device.
422 **                  This function can be called at any time regardless of
423 **                  whether there is an AVDTP connection to the peer device.
424 **
425 **                  When the procedure is complete, an AVDT_GETCAP_CFM_EVT is
426 **                  sent to the application via its callback function.  The
427 **                  application must not call AVDT_GetCapReq() or
428 **                  AVDT_DiscoverReq() again until the procedure is complete.
429 **
430 **                  The memory pointed to by p_cfg is allocated by the
431 **                  application.  This memory is written to by AVDTP as part
432 **                  of the get capabilities procedure.  This memory must
433 **                  remain accessible until the application receives
434 **                  the AVDT_GETCAP_CFM_EVT.
435 **
436 ** Returns          AVDT_SUCCESS if successful, otherwise error.
437 **
438 *******************************************************************************/
AVDT_GetCapReq(BD_ADDR bd_addr,UINT8 seid,tAVDT_CFG * p_cfg,tAVDT_CTRL_CBACK * p_cback)439 UINT16 AVDT_GetCapReq(BD_ADDR bd_addr, UINT8 seid, tAVDT_CFG *p_cfg, tAVDT_CTRL_CBACK *p_cback)
440 {
441     tAVDT_CCB_API_GETCAP    getcap;
442 
443     getcap.single.seid = seid;
444     getcap.single.sig_id = AVDT_SIG_GETCAP;
445     getcap.p_cfg = p_cfg;
446     getcap.p_cback = p_cback;
447     return avdt_get_cap_req (bd_addr, &getcap);
448 }
449 
450 /*******************************************************************************
451 **
452 ** Function         AVDT_GetAllCapReq
453 **
454 ** Description      This function initiates a connection to the AVDTP service
455 **                  on the peer device, if not already present, and gets the
456 **                  capabilities of a stream endpoint on the peer device.
457 **                  This function can be called at any time regardless of
458 **                  whether there is an AVDTP connection to the peer device.
459 **
460 **                  When the procedure is complete, an AVDT_GETCAP_CFM_EVT is
461 **                  sent to the application via its callback function.  The
462 **                  application must not call AVDT_GetCapReq() or
463 **                  AVDT_DiscoverReq() again until the procedure is complete.
464 **
465 **                  The memory pointed to by p_cfg is allocated by the
466 **                  application.  This memory is written to by AVDTP as part
467 **                  of the get capabilities procedure.  This memory must
468 **                  remain accessible until the application receives
469 **                  the AVDT_GETCAP_CFM_EVT.
470 **
471 ** Returns          AVDT_SUCCESS if successful, otherwise error.
472 **
473 *******************************************************************************/
AVDT_GetAllCapReq(BD_ADDR bd_addr,UINT8 seid,tAVDT_CFG * p_cfg,tAVDT_CTRL_CBACK * p_cback)474 UINT16 AVDT_GetAllCapReq(BD_ADDR bd_addr, UINT8 seid, tAVDT_CFG *p_cfg, tAVDT_CTRL_CBACK *p_cback)
475 {
476     tAVDT_CCB_API_GETCAP    getcap;
477 
478     getcap.single.seid = seid;
479     getcap.single.sig_id = AVDT_SIG_GET_ALLCAP;
480     getcap.p_cfg = p_cfg;
481     getcap.p_cback = p_cback;
482     return avdt_get_cap_req (bd_addr, &getcap);
483 }
484 
485 /*******************************************************************************
486 **
487 ** Function         AVDT_DelayReport
488 **
489 ** Description      This functions sends a Delay Report to the peer device
490 **                  that is associated with a particular SEID.
491 **                  This function is called by SNK device.
492 **
493 ** Returns          AVDT_SUCCESS if successful, otherwise error.
494 **
495 *******************************************************************************/
AVDT_DelayReport(UINT8 handle,UINT8 seid,UINT16 delay)496 UINT16 AVDT_DelayReport(UINT8 handle, UINT8 seid, UINT16 delay)
497 {
498     tAVDT_SCB       *p_scb;
499     UINT16          result = AVDT_SUCCESS;
500     tAVDT_SCB_EVT   evt;
501 
502     /* map handle to scb */
503     if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
504     {
505         result = AVDT_BAD_HANDLE;
506     }
507     else
508     /* send event to scb */
509     {
510         evt.apidelay.hdr.seid   = seid;
511         evt.apidelay.delay      = delay;
512         avdt_scb_event(p_scb, AVDT_SCB_API_DELAY_RPT_REQ_EVT, &evt);
513     }
514 
515     return result;
516 }
517 
518 /*******************************************************************************
519 **
520 ** Function         AVDT_OpenReq
521 **
522 ** Description      This function initiates a connection to the AVDTP service
523 **                  on the peer device, if not already present, and connects
524 **                  to a stream endpoint on a peer device.  When the connection
525 **                  is completed, an AVDT_OPEN_CFM_EVT is sent to the
526 **                  application via the control callback function for this handle.
527 **
528 ** Returns          AVDT_SUCCESS if successful, otherwise error.
529 **
530 *******************************************************************************/
AVDT_OpenReq(UINT8 handle,BD_ADDR bd_addr,UINT8 seid,tAVDT_CFG * p_cfg)531 UINT16 AVDT_OpenReq(UINT8 handle, BD_ADDR bd_addr, UINT8 seid, tAVDT_CFG *p_cfg)
532 {
533     tAVDT_CCB       *p_ccb = NULL;
534     tAVDT_SCB       *p_scb = NULL;
535     UINT16          result = AVDT_SUCCESS;
536     tAVDT_SCB_EVT   evt;
537 
538     /* verify SEID */
539     if ((seid < AVDT_SEID_MIN) || (seid > AVDT_SEID_MAX))
540     {
541         result = AVDT_BAD_PARAMS;
542     }
543     /* map handle to scb */
544     else if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
545     {
546         result = AVDT_BAD_HANDLE;
547     }
548     /* find channel control block for this bd addr; if none, allocate one */
549     else if ((p_ccb = avdt_ccb_by_bd(bd_addr)) == NULL)
550     {
551         if ((p_ccb = avdt_ccb_alloc(bd_addr)) == NULL)
552         {
553             /* could not allocate channel control block */
554             result = AVDT_NO_RESOURCES;
555         }
556     }
557 
558     /* send event to scb */
559     if (result == AVDT_SUCCESS)
560     {
561         evt.msg.config_cmd.hdr.seid = seid;
562         evt.msg.config_cmd.hdr.ccb_idx = avdt_ccb_to_idx(p_ccb);
563         evt.msg.config_cmd.int_seid = handle;
564         evt.msg.config_cmd.p_cfg = p_cfg;
565         avdt_scb_event(p_scb, AVDT_SCB_API_SETCONFIG_REQ_EVT, &evt);
566     }
567     return result;
568 }
569 
570 /*******************************************************************************
571 **
572 ** Function         AVDT_ConfigRsp
573 **
574 ** Description      Respond to a configure request from the peer device.  This
575 **                  function must be called if the application receives an
576 **                  AVDT_CONFIG_IND_EVT through its control callback.
577 **
578 **
579 ** Returns          AVDT_SUCCESS if successful, otherwise error.
580 **
581 *******************************************************************************/
AVDT_ConfigRsp(UINT8 handle,UINT8 label,UINT8 error_code,UINT8 category)582 UINT16 AVDT_ConfigRsp(UINT8 handle, UINT8 label, UINT8 error_code, UINT8 category)
583 {
584     tAVDT_SCB       *p_scb;
585     tAVDT_SCB_EVT   evt;
586     UINT16          result = AVDT_SUCCESS;
587     UINT8           event_code;
588 
589     /* map handle to scb */
590     if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
591     {
592         result = AVDT_BAD_HANDLE;
593     }
594     /* handle special case when this function is called but peer has not send
595     ** a configuration cmd; ignore and return error result
596     */
597     else if (!p_scb->in_use)
598     {
599         result = AVDT_BAD_HANDLE;
600     }
601     /* send event to scb */
602     else
603     {
604         evt.msg.hdr.err_code = error_code;
605         evt.msg.hdr.err_param = category;
606         evt.msg.hdr.label = label;
607         if (error_code == 0)
608         {
609             event_code = AVDT_SCB_API_SETCONFIG_RSP_EVT;
610         }
611         else
612         {
613             event_code = AVDT_SCB_API_SETCONFIG_REJ_EVT;
614         }
615         avdt_scb_event(p_scb, event_code, &evt);
616     }
617 
618     return result;
619 }
620 
621 /*******************************************************************************
622 **
623 ** Function         AVDT_StartReq
624 **
625 ** Description      Start one or more stream endpoints.  This initiates the
626 **                  transfer of media packets for the streams.  All stream
627 **                  endpoints must previously be opened.  When the streams
628 **                  are started, an AVDT_START_CFM_EVT is sent to the
629 **                  application via the control callback function for each stream.
630 **
631 **
632 ** Returns          AVDT_SUCCESS if successful, otherwise error.
633 **
634 *******************************************************************************/
AVDT_StartReq(UINT8 * p_handles,UINT8 num_handles)635 UINT16 AVDT_StartReq(UINT8 *p_handles, UINT8 num_handles)
636 {
637     tAVDT_SCB       *p_scb = NULL;
638     tAVDT_CCB_EVT   evt;
639     UINT16          result = AVDT_SUCCESS;
640     int             i;
641 
642     if ((num_handles == 0) || (num_handles > AVDT_NUM_SEPS))
643     {
644         result = AVDT_BAD_PARAMS;
645     }
646     else
647     {
648         /* verify handles */
649         for (i = 0; i < num_handles; i++)
650         {
651             if ((p_scb = avdt_scb_by_hdl(p_handles[i])) == NULL)
652             {
653                 result = AVDT_BAD_HANDLE;
654                 break;
655             }
656         }
657     }
658 
659     if (result == AVDT_SUCCESS)
660     {
661         if (p_scb->p_ccb == NULL)
662         {
663             result = AVDT_BAD_HANDLE;
664         }
665         else
666         {
667             /* send event to ccb */
668             memcpy(evt.msg.multi.seid_list, p_handles, num_handles);
669             evt.msg.multi.num_seps = num_handles;
670             avdt_ccb_event(p_scb->p_ccb, AVDT_CCB_API_START_REQ_EVT, &evt);
671         }
672     }
673     return result;
674 }
675 
676 /*******************************************************************************
677 **
678 ** Function         AVDT_SuspendReq
679 **
680 ** Description      Suspend one or more stream endpoints. This suspends the
681 **                  transfer of media packets for the streams.  All stream
682 **                  endpoints must previously be open and started.  When the
683 **                  streams are suspended, an AVDT_SUSPEND_CFM_EVT is sent to
684 **                  the application via the control callback function for
685 **                  each stream.
686 **
687 **
688 ** Returns          AVDT_SUCCESS if successful, otherwise error.
689 **
690 *******************************************************************************/
AVDT_SuspendReq(UINT8 * p_handles,UINT8 num_handles)691 UINT16 AVDT_SuspendReq(UINT8 *p_handles, UINT8 num_handles)
692 {
693     tAVDT_SCB       *p_scb = NULL;
694     tAVDT_CCB_EVT   evt;
695     UINT16          result = AVDT_SUCCESS;
696     int             i;
697 
698     if ((num_handles == 0) || (num_handles > AVDT_NUM_SEPS))
699     {
700         result = AVDT_BAD_PARAMS;
701     }
702     else
703     {
704         /* verify handles */
705         for (i = 0; i < num_handles; i++)
706         {
707             if ((p_scb = avdt_scb_by_hdl(p_handles[i])) == NULL)
708             {
709                 result = AVDT_BAD_HANDLE;
710                 break;
711             }
712         }
713     }
714 
715     if (result == AVDT_SUCCESS)
716     {
717         if (p_scb->p_ccb == NULL)
718         {
719             result = AVDT_BAD_HANDLE;
720         }
721         else
722         {
723             /* send event to ccb */
724             memcpy(evt.msg.multi.seid_list, p_handles, num_handles);
725             evt.msg.multi.num_seps = num_handles;
726             avdt_ccb_event(p_scb->p_ccb, AVDT_CCB_API_SUSPEND_REQ_EVT, &evt);
727         }
728     }
729 
730     return result;
731 }
732 
733 /*******************************************************************************
734 **
735 ** Function         AVDT_CloseReq
736 **
737 ** Description      Close a stream endpoint.  This stops the transfer of media
738 **                  packets and closes the transport channel associated with
739 **                  this stream endpoint.  When the stream is closed, an
740 **                  AVDT_CLOSE_CFM_EVT is sent to the application via the
741 **                  control callback function for this handle.
742 **
743 **
744 ** Returns          AVDT_SUCCESS if successful, otherwise error.
745 **
746 *******************************************************************************/
AVDT_CloseReq(UINT8 handle)747 UINT16 AVDT_CloseReq(UINT8 handle)
748 {
749     tAVDT_SCB       *p_scb;
750     UINT16          result = AVDT_SUCCESS;
751 
752     /* map handle to scb */
753     if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
754     {
755         result = AVDT_BAD_HANDLE;
756     }
757     else
758     /* send event to scb */
759     {
760         avdt_scb_event(p_scb, AVDT_SCB_API_CLOSE_REQ_EVT, NULL);
761     }
762 
763     return result;
764 }
765 
766 /*******************************************************************************
767 **
768 ** Function         AVDT_ReconfigReq
769 **
770 ** Description      Reconfigure a stream endpoint.  This allows the application
771 **                  to change the codec or content protection capabilities of
772 **                  a stream endpoint after it has been opened.  This function
773 **                  can only be called if the stream is opened but not started
774 **                  or if the stream has been suspended.  When the procedure
775 **                  is completed, an AVDT_RECONFIG_CFM_EVT is sent to the
776 **                  application via the control callback function for this handle.
777 **
778 **
779 ** Returns          AVDT_SUCCESS if successful, otherwise error.
780 **
781 *******************************************************************************/
AVDT_ReconfigReq(UINT8 handle,tAVDT_CFG * p_cfg)782 UINT16 AVDT_ReconfigReq(UINT8 handle, tAVDT_CFG *p_cfg)
783 {
784     tAVDT_SCB       *p_scb;
785     UINT16          result = AVDT_SUCCESS;
786     tAVDT_SCB_EVT   evt;
787 
788     /* map handle to scb */
789     if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
790     {
791         result = AVDT_BAD_HANDLE;
792     }
793     /* send event to scb */
794     else
795     {
796         /* force psc_mask to zero */
797         p_cfg->psc_mask = 0;
798 
799         evt.msg.reconfig_cmd.p_cfg = p_cfg;
800         avdt_scb_event(p_scb, AVDT_SCB_API_RECONFIG_REQ_EVT, &evt);
801     }
802     return result;
803 }
804 
805 /*******************************************************************************
806 **
807 ** Function         AVDT_ReconfigRsp
808 **
809 ** Description      Respond to a reconfigure request from the peer device.
810 **                  This function must be called if the application receives
811 **                  an AVDT_RECONFIG_IND_EVT through its control callback.
812 **
813 **
814 ** Returns          AVDT_SUCCESS if successful, otherwise error.
815 **
816 *******************************************************************************/
AVDT_ReconfigRsp(UINT8 handle,UINT8 label,UINT8 error_code,UINT8 category)817 UINT16 AVDT_ReconfigRsp(UINT8 handle, UINT8 label, UINT8 error_code, UINT8 category)
818 {
819     tAVDT_SCB       *p_scb;
820     tAVDT_SCB_EVT   evt;
821     UINT16          result = AVDT_SUCCESS;
822 
823     /* map handle to scb */
824     if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
825     {
826         result = AVDT_BAD_HANDLE;
827     }
828     /* send event to scb */
829     else
830     {
831         evt.msg.hdr.err_code = error_code;
832         evt.msg.hdr.err_param = category;
833         evt.msg.hdr.label = label;
834         avdt_scb_event(p_scb, AVDT_SCB_API_RECONFIG_RSP_EVT, &evt);
835     }
836 
837     return result;
838 }
839 
840 /*******************************************************************************
841 **
842 ** Function         AVDT_SecurityReq
843 **
844 ** Description      Send a security request to the peer device.  When the
845 **                  security procedure is completed, an AVDT_SECURITY_CFM_EVT
846 **                  is sent to the application via the control callback function
847 **                  for this handle.  (Please note that AVDTP security procedures
848 **                  are unrelated to Bluetooth link level security.)
849 **
850 **
851 ** Returns          AVDT_SUCCESS if successful, otherwise error.
852 **
853 *******************************************************************************/
AVDT_SecurityReq(UINT8 handle,UINT8 * p_data,UINT16 len)854 UINT16 AVDT_SecurityReq(UINT8 handle, UINT8 *p_data, UINT16 len)
855 {
856     tAVDT_SCB       *p_scb;
857     UINT16          result = AVDT_SUCCESS;
858     tAVDT_SCB_EVT   evt;
859 
860     /* map handle to scb */
861     if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
862     {
863         result = AVDT_BAD_HANDLE;
864     }
865     /* send event to scb */
866     else
867     {
868         evt.msg.security_rsp.p_data = p_data;
869         evt.msg.security_rsp.len = len;
870         avdt_scb_event(p_scb, AVDT_SCB_API_SECURITY_REQ_EVT, &evt);
871     }
872     return result;
873 }
874 
875 /*******************************************************************************
876 **
877 ** Function         AVDT_SecurityRsp
878 **
879 ** Description      Respond to a security request from the peer device.
880 **                  This function must be called if the application receives
881 **                  an AVDT_SECURITY_IND_EVT through its control callback.
882 **                  (Please note that AVDTP security procedures are unrelated
883 **                  to Bluetooth link level security.)
884 **
885 **
886 ** Returns          AVDT_SUCCESS if successful, otherwise error.
887 **
888 *******************************************************************************/
AVDT_SecurityRsp(UINT8 handle,UINT8 label,UINT8 error_code,UINT8 * p_data,UINT16 len)889 UINT16 AVDT_SecurityRsp(UINT8 handle, UINT8 label, UINT8 error_code,
890                         UINT8 *p_data, UINT16 len)
891 {
892     tAVDT_SCB       *p_scb;
893     UINT16          result = AVDT_SUCCESS;
894     tAVDT_SCB_EVT   evt;
895 
896     /* map handle to scb */
897     if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
898     {
899         result = AVDT_BAD_HANDLE;
900     }
901     /* send event to scb */
902     else
903     {
904         evt.msg.security_rsp.hdr.err_code = error_code;
905         evt.msg.security_rsp.hdr.label = label;
906         evt.msg.security_rsp.p_data = p_data;
907         evt.msg.security_rsp.len = len;
908         avdt_scb_event(p_scb, AVDT_SCB_API_SECURITY_RSP_EVT, &evt);
909     }
910     return result;
911 }
912 
913 /*******************************************************************************
914 **
915 ** Function         AVDT_WriteReqOpt
916 **
917 ** Description      Send a media packet to the peer device.  The stream must
918 **                  be started before this function is called.  Also, this
919 **                  function can only be called if the stream is a SRC.
920 **
921 **                  When AVDTP has sent the media packet and is ready for the
922 **                  next packet, an AVDT_WRITE_CFM_EVT is sent to the
923 **                  application via the control callback.  The application must
924 **                  wait for the AVDT_WRITE_CFM_EVT before it makes the next
925 **                  call to AVDT_WriteReq().  If the applications calls
926 **                  AVDT_WriteReq() before it receives the event the packet
927 **                  will not be sent.  The application may make its first call
928 **                  to AVDT_WriteReq() after it receives an AVDT_START_CFM_EVT
929 **                  or AVDT_START_IND_EVT.
930 **
931 **                  The application passes the packet using the BT_HDR structure.
932 **                  This structure is described in section 2.1.  The offset
933 **                  field must be equal to or greater than AVDT_MEDIA_OFFSET
934 **                  (if NO_RTP is specified, L2CAP_MIN_OFFSET can be used).
935 **                  This allows enough space in the buffer for the L2CAP and
936 **                  AVDTP headers.
937 **
938 **                  The memory pointed to by p_pkt must be a GKI buffer
939 **                  allocated by the application.  This buffer will be freed
940 **                  by the protocol stack; the application must not free
941 **                  this buffer.
942 **
943 **                  The opt parameter allows passing specific options like:
944 **                  - NO_RTP : do not add the RTP header to buffer
945 **
946 ** Returns          AVDT_SUCCESS if successful, otherwise error.
947 **
948 *******************************************************************************/
AVDT_WriteReqOpt(UINT8 handle,BT_HDR * p_pkt,UINT32 time_stamp,UINT8 m_pt,tAVDT_DATA_OPT_MASK opt)949 UINT16 AVDT_WriteReqOpt(UINT8 handle, BT_HDR *p_pkt, UINT32 time_stamp, UINT8 m_pt, tAVDT_DATA_OPT_MASK opt)
950 {
951     tAVDT_SCB       *p_scb;
952     tAVDT_SCB_EVT   evt;
953     UINT16          result = AVDT_SUCCESS;
954 
955     /* map handle to scb */
956     if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
957     {
958         result = AVDT_BAD_HANDLE;
959     }
960     else
961     {
962         evt.apiwrite.p_buf = p_pkt;
963         evt.apiwrite.time_stamp = time_stamp;
964         evt.apiwrite.m_pt = m_pt;
965         evt.apiwrite.opt = opt;
966 #if AVDT_MULTIPLEXING == TRUE
967         GKI_init_q (&evt.apiwrite.frag_q);
968 #endif
969         avdt_scb_event(p_scb, AVDT_SCB_API_WRITE_REQ_EVT, &evt);
970     }
971 
972     return result;
973 }
974 
975 /*******************************************************************************
976 **
977 ** Function         AVDT_WriteReq
978 **
979 ** Description      Send a media packet to the peer device.  The stream must
980 **                  be started before this function is called.  Also, this
981 **                  function can only be called if the stream is a SRC.
982 **
983 **                  When AVDTP has sent the media packet and is ready for the
984 **                  next packet, an AVDT_WRITE_CFM_EVT is sent to the
985 **                  application via the control callback.  The application must
986 **                  wait for the AVDT_WRITE_CFM_EVT before it makes the next
987 **                  call to AVDT_WriteReq().  If the applications calls
988 **                  AVDT_WriteReq() before it receives the event the packet
989 **                  will not be sent.  The application may make its first call
990 **                  to AVDT_WriteReq() after it receives an AVDT_START_CFM_EVT
991 **                  or AVDT_START_IND_EVT.
992 **
993 **                  The application passes the packet using the BT_HDR structure.
994 **                  This structure is described in section 2.1.  The offset
995 **                  field must be equal to or greater than AVDT_MEDIA_OFFSET.
996 **                  This allows enough space in the buffer for the L2CAP and
997 **                  AVDTP headers.
998 **
999 **                  The memory pointed to by p_pkt must be a GKI buffer
1000 **                  allocated by the application.  This buffer will be freed
1001 **                  by the protocol stack; the application must not free
1002 **                  this buffer.
1003 **
1004 **
1005 ** Returns          AVDT_SUCCESS if successful, otherwise error.
1006 **
1007 *******************************************************************************/
AVDT_WriteReq(UINT8 handle,BT_HDR * p_pkt,UINT32 time_stamp,UINT8 m_pt)1008 UINT16 AVDT_WriteReq(UINT8 handle, BT_HDR *p_pkt, UINT32 time_stamp, UINT8 m_pt)
1009 {
1010     return AVDT_WriteReqOpt(handle, p_pkt, time_stamp, m_pt, AVDT_DATA_OPT_NONE);
1011 }
1012 
1013 /*******************************************************************************
1014 **
1015 ** Function         AVDT_ConnectReq
1016 **
1017 ** Description      This function initiates an AVDTP signaling connection
1018 **                  to the peer device.  When the connection is completed, an
1019 **                  AVDT_CONNECT_IND_EVT is sent to the application via its
1020 **                  control callback function.  If the connection attempt fails
1021 **                  an AVDT_DISCONNECT_IND_EVT is sent.  The security mask
1022 **                  parameter overrides the outgoing security mask set in
1023 **                  AVDT_Register().
1024 **
1025 ** Returns          AVDT_SUCCESS if successful, otherwise error.
1026 **
1027 *******************************************************************************/
AVDT_ConnectReq(BD_ADDR bd_addr,UINT8 sec_mask,tAVDT_CTRL_CBACK * p_cback)1028 UINT16 AVDT_ConnectReq(BD_ADDR bd_addr, UINT8 sec_mask, tAVDT_CTRL_CBACK *p_cback)
1029 {
1030     tAVDT_CCB       *p_ccb = NULL;
1031     UINT16          result = AVDT_SUCCESS;
1032     tAVDT_CCB_EVT   evt;
1033 
1034     /* find channel control block for this bd addr; if none, allocate one */
1035     if ((p_ccb = avdt_ccb_by_bd(bd_addr)) == NULL)
1036     {
1037         if ((p_ccb = avdt_ccb_alloc(bd_addr)) == NULL)
1038         {
1039             /* could not allocate channel control block */
1040             result = AVDT_NO_RESOURCES;
1041         }
1042     }
1043     else if (p_ccb->ll_opened == FALSE)
1044     {
1045         AVDT_TRACE_WARNING("AVDT_ConnectReq: CCB LL is in the middle of opening");
1046 
1047         /* ccb was already allocated for the incoming signalling. */
1048         result = AVDT_BUSY;
1049     }
1050 
1051     if (result == AVDT_SUCCESS)
1052     {
1053         /* send event to ccb */
1054         evt.connect.p_cback = p_cback;
1055         evt.connect.sec_mask = sec_mask;
1056         avdt_ccb_event(p_ccb, AVDT_CCB_API_CONNECT_REQ_EVT, &evt);
1057     }
1058     return result;
1059 }
1060 
1061 /*******************************************************************************
1062 **
1063 ** Function         AVDT_DisconnectReq
1064 **
1065 ** Description      This function disconnect an AVDTP signaling connection
1066 **                  to the peer device.  When disconnected an
1067 **                  AVDT_DISCONNECT_IND_EVT is sent to the application via its
1068 **                  control callback function.
1069 **
1070 ** Returns          AVDT_SUCCESS if successful, otherwise error.
1071 **
1072 *******************************************************************************/
AVDT_DisconnectReq(BD_ADDR bd_addr,tAVDT_CTRL_CBACK * p_cback)1073 UINT16 AVDT_DisconnectReq(BD_ADDR bd_addr, tAVDT_CTRL_CBACK *p_cback)
1074 {
1075     tAVDT_CCB       *p_ccb = NULL;
1076     UINT16          result = AVDT_SUCCESS;
1077     tAVDT_CCB_EVT   evt;
1078 
1079     /* find channel control block for this bd addr; if none, error */
1080     if ((p_ccb = avdt_ccb_by_bd(bd_addr)) == NULL)
1081     {
1082         result = AVDT_BAD_PARAMS;
1083     }
1084 
1085     if (result == AVDT_SUCCESS)
1086     {
1087         /* send event to ccb */
1088         evt.disconnect.p_cback = p_cback;
1089         avdt_ccb_event(p_ccb, AVDT_CCB_API_DISCONNECT_REQ_EVT, &evt);
1090     }
1091     return result;
1092 }
1093 
1094 /*******************************************************************************
1095 **
1096 ** Function         AVDT_GetL2CapChannel
1097 **
1098 ** Description      Get the L2CAP CID used by the handle.
1099 **
1100 ** Returns          CID if successful, otherwise 0.
1101 **
1102 *******************************************************************************/
AVDT_GetL2CapChannel(UINT8 handle)1103 UINT16 AVDT_GetL2CapChannel(UINT8 handle)
1104 {
1105     tAVDT_SCB       *p_scb;
1106     tAVDT_CCB       *p_ccb;
1107     UINT8           tcid;
1108     UINT16          lcid = 0;
1109 
1110     /* map handle to scb */
1111     if (((p_scb = avdt_scb_by_hdl(handle)) != NULL)
1112      && ((p_ccb = p_scb->p_ccb) != NULL))
1113     {
1114         /* get tcid from type, scb */
1115         tcid = avdt_ad_type_to_tcid(AVDT_CHAN_MEDIA, p_scb);
1116 
1117         lcid = avdt_cb.ad.rt_tbl[avdt_ccb_to_idx(p_ccb)][tcid].lcid;
1118     }
1119 
1120     return (lcid);
1121 }
1122 
1123 /*******************************************************************************
1124 **
1125 ** Function         AVDT_GetSignalChannel
1126 **
1127 ** Description      Get the L2CAP CID used by the signal channel of the given handle.
1128 **
1129 ** Returns          CID if successful, otherwise 0.
1130 **
1131 *******************************************************************************/
AVDT_GetSignalChannel(UINT8 handle,BD_ADDR bd_addr)1132 UINT16 AVDT_GetSignalChannel(UINT8 handle, BD_ADDR bd_addr)
1133 {
1134     tAVDT_SCB       *p_scb;
1135     tAVDT_CCB       *p_ccb;
1136     UINT8           tcid = 0; /* tcid is always 0 for signal channel */
1137     UINT16          lcid = 0;
1138 
1139     /* map handle to scb */
1140     if (((p_scb = avdt_scb_by_hdl(handle)) != NULL)
1141      && ((p_ccb = p_scb->p_ccb) != NULL))
1142     {
1143         lcid = avdt_cb.ad.rt_tbl[avdt_ccb_to_idx(p_ccb)][tcid].lcid;
1144     }
1145     else if ((p_ccb = avdt_ccb_by_bd(bd_addr)) != NULL)
1146     {
1147         lcid = avdt_cb.ad.rt_tbl[avdt_ccb_to_idx(p_ccb)][tcid].lcid;
1148     }
1149 
1150     return (lcid);
1151 }
1152 
1153 #if AVDT_MULTIPLEXING == TRUE
1154 /*******************************************************************************
1155 **
1156 ** Function         AVDT_WriteDataReq
1157 **
1158 ** Description      Send a media packet to the peer device.  The stream must
1159 **                  be started before this function is called.  Also, this
1160 **                  function can only be called if the stream is a SRC.
1161 **
1162 **                  When AVDTP has sent the media packet and is ready for the
1163 **                  next packet, an AVDT_WRITE_CFM_EVT is sent to the
1164 **                  application via the control callback.  The application must
1165 **                  wait for the AVDT_WRITE_CFM_EVT before it makes the next
1166 **                  call to AVDT_WriteDataReq().  If the applications calls
1167 **                  AVDT_WriteDataReq() before it receives the event the packet
1168 **                  will not be sent.  The application may make its first call
1169 **                  to AVDT_WriteDataReq() after it receives an
1170 **                  AVDT_START_CFM_EVT or AVDT_START_IND_EVT.
1171 **
1172 ** Returns          AVDT_SUCCESS if successful, otherwise error.
1173 **
1174 *******************************************************************************/
AVDT_WriteDataReq(UINT8 handle,UINT8 * p_data,UINT32 data_len,UINT32 time_stamp,UINT8 m_pt,UINT8 marker)1175 extern UINT16 AVDT_WriteDataReq(UINT8 handle, UINT8 *p_data, UINT32 data_len,
1176                                 UINT32 time_stamp, UINT8 m_pt, UINT8 marker)
1177 {
1178 
1179     tAVDT_SCB       *p_scb;
1180     tAVDT_SCB_EVT   evt;
1181     UINT16          result = AVDT_SUCCESS;
1182 
1183     do
1184     {
1185         /* check length of media frame */
1186         if(data_len > AVDT_MAX_MEDIA_SIZE)
1187         {
1188             result = AVDT_BAD_PARAMS;
1189             break;
1190         }
1191         /* map handle to scb */
1192         if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
1193         {
1194             result = AVDT_BAD_HANDLE;
1195             break;
1196         }
1197         AVDT_TRACE_WARNING("mux_tsid_media:%d", p_scb->curr_cfg.mux_tsid_media);
1198 
1199         if (p_scb->p_pkt != NULL
1200             || p_scb->p_ccb == NULL
1201             || !GKI_queue_is_empty(&p_scb->frag_q)
1202             || p_scb->frag_off != 0
1203             || p_scb->curr_cfg.mux_tsid_media == 0)
1204         {
1205             result = AVDT_ERR_BAD_STATE;
1206             AVDT_TRACE_WARNING("p_scb->p_pkt=%x, p_scb->p_ccb=%x, IsQueueEmpty=%x, p_scb->frag_off=%x",
1207                 p_scb->p_pkt, p_scb->p_ccb, GKI_queue_is_empty(&p_scb->frag_q), p_scb->frag_off);
1208             break;
1209         }
1210         evt.apiwrite.p_buf = 0; /* it will indicate using of fragments queue frag_q */
1211         /* create queue of media fragments */
1212         GKI_init_q (&evt.apiwrite.frag_q);
1213 
1214         /* compose fragments from media payload and put fragments into gueue */
1215         avdt_scb_queue_frags(p_scb, &p_data, &data_len, &evt.apiwrite.frag_q);
1216 
1217         if(GKI_queue_is_empty(&evt.apiwrite.frag_q))
1218         {
1219             AVDT_TRACE_WARNING("AVDT_WriteDataReq out of GKI buffers");
1220             result = AVDT_ERR_RESOURCE;
1221             break;
1222         }
1223         evt.apiwrite.data_len = data_len;
1224         evt.apiwrite.p_data = p_data;
1225 
1226         /* process the fragments queue */
1227         evt.apiwrite.time_stamp = time_stamp;
1228         evt.apiwrite.m_pt = m_pt | (marker<<7);
1229         avdt_scb_event(p_scb, AVDT_SCB_API_WRITE_REQ_EVT, &evt);
1230     } while (0);
1231 
1232 #if (BT_USE_TRACES == TRUE)
1233     if(result != AVDT_SUCCESS)
1234     {
1235         AVDT_TRACE_WARNING("*** AVDT_WriteDataReq failed result=%d",result);
1236     }
1237 #endif
1238     return result;
1239 }
1240 #endif
1241 
1242 #if AVDT_MULTIPLEXING == TRUE
1243 /*******************************************************************************
1244 **
1245 ** Function         AVDT_SetMediaBuf
1246 **
1247 ** Description      Assigns buffer for media packets or forbids using of assigned
1248 **                  buffer if argument p_buf is NULL. This function can only
1249 **                  be called if the stream is a SNK.
1250 **
1251 **                  AVDTP uses this buffer to reassemble fragmented media packets.
1252 **                  When AVDTP receives a complete media packet, it calls the
1253 **                  p_media_cback assigned by AVDT_CreateStream().
1254 **                  This function can be called during callback to assign a
1255 **                  different buffer for next media packet or can leave the current
1256 **                  buffer for next packet.
1257 **
1258 ** Returns          AVDT_SUCCESS if successful, otherwise error.
1259 **
1260 *******************************************************************************/
AVDT_SetMediaBuf(UINT8 handle,UINT8 * p_buf,UINT32 buf_len)1261 extern UINT16 AVDT_SetMediaBuf(UINT8 handle, UINT8 *p_buf, UINT32 buf_len)
1262 {
1263     tAVDT_SCB       *p_scb;
1264     UINT16          result = AVDT_SUCCESS;
1265 
1266     /* map handle to scb */
1267     if ((p_scb = avdt_scb_by_hdl(handle)) == NULL)
1268     {
1269         result = AVDT_BAD_HANDLE;
1270     }
1271     else
1272     {
1273         if(p_buf && p_scb->cs.p_media_cback == NULL)
1274             result = AVDT_NO_RESOURCES;
1275         else
1276         {
1277             p_scb->p_media_buf = p_buf;
1278             p_scb->media_buf_len = buf_len;
1279         }
1280     }
1281 
1282     return result;
1283 }
1284 #endif
1285 
1286 #if AVDT_REPORTING == TRUE
1287 /*******************************************************************************
1288 **
1289 ** Function         AVDT_SendReport
1290 **
1291 ** Description
1292 **
1293 **
1294 **
1295 ** Returns
1296 **
1297 *******************************************************************************/
AVDT_SendReport(UINT8 handle,AVDT_REPORT_TYPE type,tAVDT_REPORT_DATA * p_data)1298 UINT16 AVDT_SendReport(UINT8 handle, AVDT_REPORT_TYPE type,
1299                        tAVDT_REPORT_DATA *p_data)
1300 {
1301     tAVDT_SCB       *p_scb;
1302     UINT16          result = AVDT_BAD_PARAMS;
1303     BT_HDR          *p_pkt;
1304     tAVDT_TC_TBL    *p_tbl;
1305     UINT8           *p, *plen, *pm1, *p_end;
1306 #if AVDT_MULTIPLEXING == TRUE
1307     UINT8           *p_al=NULL, u;
1308 #endif
1309     UINT32  ssrc;
1310     UINT16  len;
1311 
1312     /* map handle to scb && verify parameters */
1313     if (((p_scb = avdt_scb_by_hdl(handle)) != NULL)
1314      && (p_scb->p_ccb != NULL)
1315      && (((type == AVDT_RTCP_PT_SR) && (p_scb->cs.tsep == AVDT_TSEP_SRC)) ||
1316         ((type == AVDT_RTCP_PT_RR) && (p_scb->cs.tsep == AVDT_TSEP_SNK)) ||
1317         (type == AVDT_RTCP_PT_SDES)) )
1318     {
1319         result = AVDT_NO_RESOURCES;
1320 
1321         /* build SR - assume fit in one packet */
1322         p_tbl = avdt_ad_tc_tbl_by_type(AVDT_CHAN_REPORT, p_scb->p_ccb, p_scb);
1323         if((p_tbl->state == AVDT_AD_ST_OPEN) &&
1324             (p_pkt = (BT_HDR *)GKI_getbuf(p_tbl->peer_mtu)) != NULL)
1325         {
1326             p_pkt->offset = L2CAP_MIN_OFFSET;
1327             p = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
1328 #if AVDT_MULTIPLEXING == TRUE
1329             if(p_scb->curr_cfg.psc_mask & AVDT_PSC_MUX)
1330             {
1331                 /* Adaptation Layer header later */
1332                 p_al = p;
1333                 p += 2;
1334             }
1335 #endif
1336             pm1 = p;
1337             *p++ = AVDT_MEDIA_OCTET1 | 1;
1338             *p++ = type;
1339             /* save the location for length */
1340             plen = p;
1341             p+= 2;
1342             ssrc = avdt_scb_gen_ssrc(p_scb);
1343             UINT32_TO_BE_STREAM(p, ssrc);
1344 
1345             switch(type)
1346             {
1347             case AVDT_RTCP_PT_SR:   /* Sender Report */
1348                 *pm1 = AVDT_MEDIA_OCTET1;
1349                 UINT32_TO_BE_STREAM(p, p_data->sr.ntp_sec);
1350                 UINT32_TO_BE_STREAM(p, p_data->sr.ntp_frac);
1351                 UINT32_TO_BE_STREAM(p, p_data->sr.rtp_time);
1352                 UINT32_TO_BE_STREAM(p, p_data->sr.pkt_count);
1353                 UINT32_TO_BE_STREAM(p, p_data->sr.octet_count);
1354                 break;
1355 
1356             case AVDT_RTCP_PT_RR:   /* Receiver Report */
1357                 *p++ = p_data->rr.frag_lost;
1358                 AVDT_TRACE_API("packet_lost: %d", p_data->rr.packet_lost);
1359                 p_data->rr.packet_lost &= 0xFFFFFF;
1360                 AVDT_TRACE_API("packet_lost: %d", p_data->rr.packet_lost);
1361                 UINT24_TO_BE_STREAM(p, p_data->rr.packet_lost);
1362                 UINT32_TO_BE_STREAM(p, p_data->rr.seq_num_rcvd);
1363                 UINT32_TO_BE_STREAM(p, p_data->rr.jitter);
1364                 UINT32_TO_BE_STREAM(p, p_data->rr.lsr);
1365                 UINT32_TO_BE_STREAM(p, p_data->rr.dlsr);
1366                 break;
1367 
1368             case AVDT_RTCP_PT_SDES: /* Source Description */
1369                 *p++ = AVDT_RTCP_SDES_CNAME;
1370                 len = strlen((char *)p_data->cname);
1371                 if(len > AVDT_MAX_CNAME_SIZE)
1372                     len = AVDT_MAX_CNAME_SIZE;
1373                 *p++ = (UINT8)len;
1374                 BCM_STRNCPY_S((char *)p, len+1, (char *)p_data->cname, len+1);
1375                 p += len;
1376                 break;
1377             }
1378             p_end = p;
1379             len = p - pm1 - 1;
1380             UINT16_TO_BE_STREAM(plen, len);
1381 
1382 #if AVDT_MULTIPLEXING == TRUE
1383             if(p_scb->curr_cfg.psc_mask & AVDT_PSC_MUX)
1384             {
1385                 /* Adaptation Layer header */
1386                 p = p_al;
1387                 len++;
1388                 UINT16_TO_BE_STREAM(p_al, len );
1389                 /* TSID, no-fragment bit and coding of length(9-bit length field) */
1390                 u = *p;
1391                 *p = (p_scb->curr_cfg.mux_tsid_report<<3) | AVDT_ALH_LCODE_9BITM0;
1392                 if(u)
1393                     *p |= AVDT_ALH_LCODE_9BITM1;
1394             }
1395 #endif
1396 
1397             /* set the actual payload length */
1398             p_pkt->len = p_end - p;
1399             /* send the packet */
1400             if(L2CAP_DW_FAILED != avdt_ad_write_req(AVDT_CHAN_REPORT, p_scb->p_ccb, p_scb, p_pkt))
1401                 result = AVDT_SUCCESS;
1402         }
1403     }
1404 
1405     return result;
1406 }
1407 #endif
1408 
1409 /******************************************************************************
1410 **
1411 ** Function         AVDT_SetTraceLevel
1412 **
1413 ** Description      Sets the trace level for AVDT. If 0xff is passed, the
1414 **                  current trace level is returned.
1415 **
1416 **                  Input Parameters:
1417 **                      new_level:  The level to set the AVDT tracing to:
1418 **                      0xff-returns the current setting.
1419 **                      0-turns off tracing.
1420 **                      >= 1-Errors.
1421 **                      >= 2-Warnings.
1422 **                      >= 3-APIs.
1423 **                      >= 4-Events.
1424 **                      >= 5-Debug.
1425 **
1426 ** Returns          The new trace level or current trace level if
1427 **                  the input parameter is 0xff.
1428 **
1429 ******************************************************************************/
AVDT_SetTraceLevel(UINT8 new_level)1430 UINT8 AVDT_SetTraceLevel (UINT8 new_level)
1431 {
1432     if (new_level != 0xFF)
1433         avdt_cb.trace_level = new_level;
1434 
1435     return (avdt_cb.trace_level);
1436 }
1437