rtp_engine.c: Fix performance issue with several channel drivers that use RTP.
[asterisk/asterisk.git] / main / rtp_engine.c
1 /*
2  * Asterisk -- An open source telephony toolkit.
3  *
4  * Copyright (C) 1999 - 2008, Digium, Inc.
5  *
6  * Joshua Colp <jcolp@digium.com>
7  *
8  * See http://www.asterisk.org for more information about
9  * the Asterisk project. Please do not directly contact
10  * any of the maintainers of this project for assistance;
11  * the project provides a web site, mailing lists and IRC
12  * channels for your use.
13  *
14  * This program is free software, distributed under the terms of
15  * the GNU General Public License Version 2. See the LICENSE file
16  * at the top of the source tree.
17  */
18
19 /*! \file
20  *
21  * \brief Pluggable RTP Architecture
22  *
23  * \author Joshua Colp <jcolp@digium.com>
24  */
25
26 /*** MODULEINFO
27         <support_level>core</support_level>
28 ***/
29
30 /*** DOCUMENTATION
31         <managerEvent language="en_US" name="RTCPSent">
32                 <managerEventInstance class="EVENT_FLAG_REPORTING">
33                         <synopsis>Raised when an RTCP packet is sent.</synopsis>
34                         <syntax>
35                                 <channel_snapshot/>
36                                 <parameter name="SSRC">
37                                         <para>The SSRC identifier for our stream</para>
38                                 </parameter>
39                                 <parameter name="PT">
40                                         <para>The type of packet for this RTCP report.</para>
41                                         <enumlist>
42                                                 <enum name="200(SR)"/>
43                                                 <enum name="201(RR)"/>
44                                         </enumlist>
45                                 </parameter>
46                                 <parameter name="To">
47                                         <para>The address the report is sent to.</para>
48                                 </parameter>
49                                 <parameter name="ReportCount">
50                                         <para>The number of reports that were sent.</para>
51                                         <para>The report count determines the number of ReportX headers in
52                                         the message. The X for each set of report headers will range from 0 to
53                                         <literal>ReportCount - 1</literal>.</para>
54                                 </parameter>
55                                 <parameter name="SentNTP" required="false">
56                                         <para>The time the sender generated the report. Only valid when
57                                         PT is <literal>200(SR)</literal>.</para>
58                                 </parameter>
59                                 <parameter name="SentRTP" required="false">
60                                         <para>The sender's last RTP timestamp. Only valid when PT is
61                                         <literal>200(SR)</literal>.</para>
62                                 </parameter>
63                                 <parameter name="SentPackets" required="false">
64                                         <para>The number of packets the sender has sent. Only valid when PT
65                                         is <literal>200(SR)</literal>.</para>
66                                 </parameter>
67                                 <parameter name="SentOctets" required="false">
68                                         <para>The number of bytes the sender has sent. Only valid when PT is
69                                         <literal>200(SR)</literal>.</para>
70                                 </parameter>
71                                 <parameter name="ReportXSourceSSRC">
72                                         <para>The SSRC for the source of this report block.</para>
73                                 </parameter>
74                                 <parameter name="ReportXFractionLost">
75                                         <para>The fraction of RTP data packets from <literal>ReportXSourceSSRC</literal>
76                                         lost since the previous SR or RR report was sent.</para>
77                                 </parameter>
78                                 <parameter name="ReportXCumulativeLost">
79                                         <para>The total number of RTP data packets from <literal>ReportXSourceSSRC</literal>
80                                         lost since the beginning of reception.</para>
81                                 </parameter>
82                                 <parameter name="ReportXHighestSequence">
83                                         <para>The highest sequence number received in an RTP data packet from
84                                         <literal>ReportXSourceSSRC</literal>.</para>
85                                 </parameter>
86                                 <parameter name="ReportXSequenceNumberCycles">
87                                         <para>The number of sequence number cycles seen for the RTP data
88                                         received from <literal>ReportXSourceSSRC</literal>.</para>
89                                 </parameter>
90                                 <parameter name="ReportXIAJitter">
91                                         <para>An estimate of the statistical variance of the RTP data packet
92                                         interarrival time, measured in timestamp units.</para>
93                                 </parameter>
94                                 <parameter name="ReportXLSR">
95                                         <para>The last SR timestamp received from <literal>ReportXSourceSSRC</literal>.
96                                         If no SR has been received from <literal>ReportXSourceSSRC</literal>,
97                                         then 0.</para>
98                                 </parameter>
99                                 <parameter name="ReportXDLSR">
100                                         <para>The delay, expressed in units of 1/65536 seconds, between
101                                         receiving the last SR packet from <literal>ReportXSourceSSRC</literal>
102                                         and sending this report.</para>
103                                 </parameter>
104                         </syntax>
105                 </managerEventInstance>
106         </managerEvent>
107         <managerEvent language="en_US" name="RTCPReceived">
108                 <managerEventInstance class="EVENT_FLAG_REPORTING">
109                         <synopsis>Raised when an RTCP packet is received.</synopsis>
110                         <syntax>
111                                 <channel_snapshot/>
112                                 <parameter name="SSRC">
113                                         <para>The SSRC identifier for the remote system</para>
114                                 </parameter>
115                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='RTCPSent']/managerEventInstance/syntax/parameter[@name='PT'])" />
116                                 <parameter name="From">
117                                         <para>The address the report was received from.</para>
118                                 </parameter>
119                                 <parameter name="RTT">
120                                         <para>Calculated Round-Trip Time in seconds</para>
121                                 </parameter>
122                                 <parameter name="ReportCount">
123                                         <para>The number of reports that were received.</para>
124                                         <para>The report count determines the number of ReportX headers in
125                                         the message. The X for each set of report headers will range from 0 to
126                                         <literal>ReportCount - 1</literal>.</para>
127                                 </parameter>
128                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='RTCPSent']/managerEventInstance/syntax/parameter[@name='SentNTP'])" />
129                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='RTCPSent']/managerEventInstance/syntax/parameter[@name='SentRTP'])" />
130                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='RTCPSent']/managerEventInstance/syntax/parameter[@name='SentPackets'])" />
131                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='RTCPSent']/managerEventInstance/syntax/parameter[@name='SentOctets'])" />
132                                 <xi:include xpointer="xpointer(/docs/managerEvent[@name='RTCPSent']/managerEventInstance/syntax/parameter[contains(@name, 'ReportX')])" />
133                         </syntax>
134                 </managerEventInstance>
135         </managerEvent>
136  ***/
137
138 #include "asterisk.h"
139
140 ASTERISK_REGISTER_FILE()
141
142 #include <math.h>
143
144 #include "asterisk/channel.h"
145 #include "asterisk/frame.h"
146 #include "asterisk/module.h"
147 #include "asterisk/rtp_engine.h"
148 #include "asterisk/manager.h"
149 #include "asterisk/options.h"
150 #include "asterisk/astobj2.h"
151 #include "asterisk/pbx.h"
152 #include "asterisk/translate.h"
153 #include "asterisk/netsock2.h"
154 #include "asterisk/_private.h"
155 #include "asterisk/framehook.h"
156 #include "asterisk/stasis.h"
157 #include "asterisk/json.h"
158 #include "asterisk/stasis_channels.h"
159
160 struct ast_srtp_res *res_srtp = NULL;
161 struct ast_srtp_policy_res *res_srtp_policy = NULL;
162
163 /*! Structure that represents an RTP session (instance) */
164 struct ast_rtp_instance {
165         /*! Engine that is handling this RTP instance */
166         struct ast_rtp_engine *engine;
167         /*! Data unique to the RTP engine */
168         void *data;
169         /*! RTP properties that have been set and their value */
170         int properties[AST_RTP_PROPERTY_MAX];
171         /*! Address that we are expecting RTP to come in to */
172         struct ast_sockaddr local_address;
173         /*! The original source address */
174         struct ast_sockaddr requested_target_address;
175         /*! Address that we are sending RTP to */
176         struct ast_sockaddr incoming_source_address;
177         /*! Instance that we are bridged to if doing remote or local bridging */
178         struct ast_rtp_instance *bridged;
179         /*! Payload and packetization information */
180         struct ast_rtp_codecs codecs;
181         /*! RTP timeout time (negative or zero means disabled, negative value means temporarily disabled) */
182         int timeout;
183         /*! RTP timeout when on hold (negative or zero means disabled, negative value means temporarily disabled). */
184         int holdtimeout;
185         /*! RTP keepalive interval */
186         int keepalive;
187         /*! Glue currently in use */
188         struct ast_rtp_glue *glue;
189         /*! SRTP info associated with the instance */
190         struct ast_srtp *srtp;
191         /*! Channel unique ID */
192         char channel_uniqueid[AST_MAX_UNIQUEID];
193         /*! Time of last packet sent */
194         time_t last_tx;
195         /*! Time of last packet received */
196         time_t last_rx;
197 };
198
199 /*! List of RTP engines that are currently registered */
200 static AST_RWLIST_HEAD_STATIC(engines, ast_rtp_engine);
201
202 /*! List of RTP glues */
203 static AST_RWLIST_HEAD_STATIC(glues, ast_rtp_glue);
204
205 #define MAX_RTP_MIME_TYPES 128
206
207 /*! The following array defines the MIME Media type (and subtype) for each
208    of our codecs, or RTP-specific data type. */
209 static struct ast_rtp_mime_type {
210         /*! \brief A mapping object between the Asterisk codec and this RTP payload */
211         struct ast_rtp_payload_type payload_type;
212         /*! \brief The media type */
213         char type[16];
214         /*! \brief The format type */
215         char subtype[64];
216         /*! \brief Expected sample rate of the /c subtype */
217         unsigned int sample_rate;
218 } ast_rtp_mime_types[128]; /* This will Likely not need to grow any time soon. */
219 static ast_rwlock_t mime_types_lock;
220 static int mime_types_len = 0;
221
222 /*!
223  * \brief Mapping between Asterisk codecs and rtp payload types
224  *
225  * Static (i.e., well-known) RTP payload types for our "AST_FORMAT..."s:
226  * also, our own choices for dynamic payload types.  This is our master
227  * table for transmission
228  *
229  * See http://www.iana.org/assignments/rtp-parameters for a list of
230  * assigned values
231  */
232 static struct ast_rtp_payload_type *static_RTP_PT[AST_RTP_MAX_PT];
233 static ast_rwlock_t static_RTP_PT_lock;
234
235 /*! \brief \ref stasis topic for RTP related messages */
236 static struct stasis_topic *rtp_topic;
237
238
239 /*!
240  * \internal
241  * \brief Destructor for \c ast_rtp_payload_type
242  */
243 static void rtp_payload_type_dtor(void *obj)
244 {
245         struct ast_rtp_payload_type *payload = obj;
246
247         ao2_cleanup(payload->format);
248 }
249
250 struct ast_rtp_payload_type *ast_rtp_engine_alloc_payload_type(void)
251 {
252         struct ast_rtp_payload_type *payload;
253
254         payload = ao2_alloc_options(sizeof(*payload), rtp_payload_type_dtor,
255                 AO2_ALLOC_OPT_LOCK_NOLOCK);
256
257         return payload;
258 }
259
260 int ast_rtp_engine_register2(struct ast_rtp_engine *engine, struct ast_module *module)
261 {
262         struct ast_rtp_engine *current_engine;
263
264         /* Perform a sanity check on the engine structure to make sure it has the basics */
265         if (ast_strlen_zero(engine->name) || !engine->new || !engine->destroy || !engine->write || !engine->read) {
266                 ast_log(LOG_WARNING, "RTP Engine '%s' failed sanity check so it was not registered.\n", !ast_strlen_zero(engine->name) ? engine->name : "Unknown");
267                 return -1;
268         }
269
270         /* Link owner module to the RTP engine for reference counting purposes */
271         engine->mod = module;
272
273         AST_RWLIST_WRLOCK(&engines);
274
275         /* Ensure that no two modules with the same name are registered at the same time */
276         AST_RWLIST_TRAVERSE(&engines, current_engine, entry) {
277                 if (!strcmp(current_engine->name, engine->name)) {
278                         ast_log(LOG_WARNING, "An RTP engine with the name '%s' has already been registered.\n", engine->name);
279                         AST_RWLIST_UNLOCK(&engines);
280                         return -1;
281                 }
282         }
283
284         /* The engine survived our critique. Off to the list it goes to be used */
285         AST_RWLIST_INSERT_TAIL(&engines, engine, entry);
286
287         AST_RWLIST_UNLOCK(&engines);
288
289         ast_verb(2, "Registered RTP engine '%s'\n", engine->name);
290
291         return 0;
292 }
293
294 int ast_rtp_engine_unregister(struct ast_rtp_engine *engine)
295 {
296         struct ast_rtp_engine *current_engine = NULL;
297
298         AST_RWLIST_WRLOCK(&engines);
299
300         if ((current_engine = AST_RWLIST_REMOVE(&engines, engine, entry))) {
301                 ast_verb(2, "Unregistered RTP engine '%s'\n", engine->name);
302         }
303
304         AST_RWLIST_UNLOCK(&engines);
305
306         return current_engine ? 0 : -1;
307 }
308
309 int ast_rtp_glue_register2(struct ast_rtp_glue *glue, struct ast_module *module)
310 {
311         struct ast_rtp_glue *current_glue = NULL;
312
313         if (ast_strlen_zero(glue->type)) {
314                 return -1;
315         }
316
317         glue->mod = module;
318
319         AST_RWLIST_WRLOCK(&glues);
320
321         AST_RWLIST_TRAVERSE(&glues, current_glue, entry) {
322                 if (!strcasecmp(current_glue->type, glue->type)) {
323                         ast_log(LOG_WARNING, "RTP glue with the name '%s' has already been registered.\n", glue->type);
324                         AST_RWLIST_UNLOCK(&glues);
325                         return -1;
326                 }
327         }
328
329         AST_RWLIST_INSERT_TAIL(&glues, glue, entry);
330
331         AST_RWLIST_UNLOCK(&glues);
332
333         ast_verb(2, "Registered RTP glue '%s'\n", glue->type);
334
335         return 0;
336 }
337
338 int ast_rtp_glue_unregister(struct ast_rtp_glue *glue)
339 {
340         struct ast_rtp_glue *current_glue = NULL;
341
342         AST_RWLIST_WRLOCK(&glues);
343
344         if ((current_glue = AST_RWLIST_REMOVE(&glues, glue, entry))) {
345                 ast_verb(2, "Unregistered RTP glue '%s'\n", glue->type);
346         }
347
348         AST_RWLIST_UNLOCK(&glues);
349
350         return current_glue ? 0 : -1;
351 }
352
353 static void instance_destructor(void *obj)
354 {
355         struct ast_rtp_instance *instance = obj;
356
357         /* Pass us off to the engine to destroy */
358         if (instance->data && instance->engine->destroy(instance)) {
359                 ast_debug(1, "Engine '%s' failed to destroy RTP instance '%p'\n", instance->engine->name, instance);
360                 return;
361         }
362
363         if (instance->srtp) {
364                 res_srtp->destroy(instance->srtp);
365         }
366
367         ast_rtp_codecs_payloads_destroy(&instance->codecs);
368
369         /* Drop our engine reference */
370         ast_module_unref(instance->engine->mod);
371
372         ast_debug(1, "Destroyed RTP instance '%p'\n", instance);
373 }
374
375 int ast_rtp_instance_destroy(struct ast_rtp_instance *instance)
376 {
377         ao2_ref(instance, -1);
378
379         return 0;
380 }
381
382 struct ast_rtp_instance *ast_rtp_instance_new(const char *engine_name,
383                 struct ast_sched_context *sched, const struct ast_sockaddr *sa,
384                 void *data)
385 {
386         struct ast_sockaddr address = {{0,}};
387         struct ast_rtp_instance *instance = NULL;
388         struct ast_rtp_engine *engine = NULL;
389
390         AST_RWLIST_RDLOCK(&engines);
391
392         /* If an engine name was specified try to use it or otherwise use the first one registered */
393         if (!ast_strlen_zero(engine_name)) {
394                 AST_RWLIST_TRAVERSE(&engines, engine, entry) {
395                         if (!strcmp(engine->name, engine_name)) {
396                                 break;
397                         }
398                 }
399         } else {
400                 engine = AST_RWLIST_FIRST(&engines);
401         }
402
403         /* If no engine was actually found bail out now */
404         if (!engine) {
405                 ast_log(LOG_ERROR, "No RTP engine was found. Do you have one loaded?\n");
406                 AST_RWLIST_UNLOCK(&engines);
407                 return NULL;
408         }
409
410         /* Bump up the reference count before we return so the module can not be unloaded */
411         ast_module_ref(engine->mod);
412
413         AST_RWLIST_UNLOCK(&engines);
414
415         /* Allocate a new RTP instance */
416         if (!(instance = ao2_alloc(sizeof(*instance), instance_destructor))) {
417                 ast_module_unref(engine->mod);
418                 return NULL;
419         }
420         instance->engine = engine;
421         ast_sockaddr_copy(&instance->local_address, sa);
422         ast_sockaddr_copy(&address, sa);
423
424         if (ast_rtp_codecs_payloads_initialize(&instance->codecs)) {
425                 ao2_ref(instance, -1);
426                 return NULL;
427         }
428
429         ast_debug(1, "Using engine '%s' for RTP instance '%p'\n", engine->name, instance);
430
431         /* And pass it off to the engine to setup */
432         if (instance->engine->new(instance, sched, &address, data)) {
433                 ast_debug(1, "Engine '%s' failed to setup RTP instance '%p'\n", engine->name, instance);
434                 ao2_ref(instance, -1);
435                 return NULL;
436         }
437
438         ast_debug(1, "RTP instance '%p' is setup and ready to go\n", instance);
439
440         return instance;
441 }
442
443 const char *ast_rtp_instance_get_channel_id(struct ast_rtp_instance *instance)
444 {
445         return instance->channel_uniqueid;
446 }
447
448 void ast_rtp_instance_set_channel_id(struct ast_rtp_instance *instance, const char *uniqueid)
449 {
450         ast_copy_string(instance->channel_uniqueid, uniqueid, sizeof(instance->channel_uniqueid));
451 }
452
453 void ast_rtp_instance_set_data(struct ast_rtp_instance *instance, void *data)
454 {
455         instance->data = data;
456 }
457
458 void *ast_rtp_instance_get_data(struct ast_rtp_instance *instance)
459 {
460         return instance->data;
461 }
462
463 int ast_rtp_instance_write(struct ast_rtp_instance *instance, struct ast_frame *frame)
464 {
465         return instance->engine->write(instance, frame);
466 }
467
468 struct ast_frame *ast_rtp_instance_read(struct ast_rtp_instance *instance, int rtcp)
469 {
470         return instance->engine->read(instance, rtcp);
471 }
472
473 int ast_rtp_instance_set_local_address(struct ast_rtp_instance *instance,
474                 const struct ast_sockaddr *address)
475 {
476         ast_sockaddr_copy(&instance->local_address, address);
477         return 0;
478 }
479
480 int ast_rtp_instance_set_incoming_source_address(struct ast_rtp_instance *instance,
481                                                  const struct ast_sockaddr *address)
482 {
483         ast_sockaddr_copy(&instance->incoming_source_address, address);
484
485         /* moo */
486
487         if (instance->engine->remote_address_set) {
488                 instance->engine->remote_address_set(instance, &instance->incoming_source_address);
489         }
490
491         return 0;
492 }
493
494 int ast_rtp_instance_set_requested_target_address(struct ast_rtp_instance *instance,
495                                                   const struct ast_sockaddr *address)
496 {
497         ast_sockaddr_copy(&instance->requested_target_address, address);
498
499         return ast_rtp_instance_set_incoming_source_address(instance, address);
500 }
501
502 int ast_rtp_instance_get_and_cmp_local_address(struct ast_rtp_instance *instance,
503                 struct ast_sockaddr *address)
504 {
505         if (ast_sockaddr_cmp(address, &instance->local_address) != 0) {
506                 ast_sockaddr_copy(address, &instance->local_address);
507                 return 1;
508         }
509
510         return 0;
511 }
512
513 void ast_rtp_instance_get_local_address(struct ast_rtp_instance *instance,
514                 struct ast_sockaddr *address)
515 {
516         ast_sockaddr_copy(address, &instance->local_address);
517 }
518
519 int ast_rtp_instance_get_and_cmp_requested_target_address(struct ast_rtp_instance *instance,
520                 struct ast_sockaddr *address)
521 {
522         if (ast_sockaddr_cmp(address, &instance->requested_target_address) != 0) {
523                 ast_sockaddr_copy(address, &instance->requested_target_address);
524                 return 1;
525         }
526
527         return 0;
528 }
529
530 void ast_rtp_instance_get_incoming_source_address(struct ast_rtp_instance *instance,
531                                                   struct ast_sockaddr *address)
532 {
533         ast_sockaddr_copy(address, &instance->incoming_source_address);
534 }
535
536 void ast_rtp_instance_get_requested_target_address(struct ast_rtp_instance *instance,
537                                                    struct ast_sockaddr *address)
538 {
539         ast_sockaddr_copy(address, &instance->requested_target_address);
540 }
541
542 void ast_rtp_instance_set_extended_prop(struct ast_rtp_instance *instance, int property, void *value)
543 {
544         if (instance->engine->extended_prop_set) {
545                 instance->engine->extended_prop_set(instance, property, value);
546         }
547 }
548
549 void *ast_rtp_instance_get_extended_prop(struct ast_rtp_instance *instance, int property)
550 {
551         if (instance->engine->extended_prop_get) {
552                 return instance->engine->extended_prop_get(instance, property);
553         }
554
555         return NULL;
556 }
557
558 void ast_rtp_instance_set_prop(struct ast_rtp_instance *instance, enum ast_rtp_property property, int value)
559 {
560         instance->properties[property] = value;
561
562         if (instance->engine->prop_set) {
563                 instance->engine->prop_set(instance, property, value);
564         }
565 }
566
567 int ast_rtp_instance_get_prop(struct ast_rtp_instance *instance, enum ast_rtp_property property)
568 {
569         return instance->properties[property];
570 }
571
572 struct ast_rtp_codecs *ast_rtp_instance_get_codecs(struct ast_rtp_instance *instance)
573 {
574         return &instance->codecs;
575 }
576
577 int ast_rtp_codecs_payloads_initialize(struct ast_rtp_codecs *codecs)
578 {
579         int res;
580
581         codecs->framing = 0;
582         ast_rwlock_init(&codecs->codecs_lock);
583         res = AST_VECTOR_INIT(&codecs->payloads, AST_RTP_MAX_PT);
584
585         return res;
586 }
587
588 void ast_rtp_codecs_payloads_destroy(struct ast_rtp_codecs *codecs)
589 {
590         int i;
591
592         for (i = 0; i < AST_VECTOR_SIZE(&codecs->payloads); i++) {
593                 struct ast_rtp_payload_type *type;
594
595                 type = AST_VECTOR_GET(&codecs->payloads, i);
596                 ao2_t_cleanup(type, "destroying ast_rtp_codec");
597         }
598         AST_VECTOR_FREE(&codecs->payloads);
599
600         ast_rwlock_destroy(&codecs->codecs_lock);
601 }
602
603 void ast_rtp_codecs_payloads_clear(struct ast_rtp_codecs *codecs, struct ast_rtp_instance *instance)
604 {
605         ast_rtp_codecs_payloads_destroy(codecs);
606         ast_rtp_codecs_payloads_initialize(codecs);
607
608         if (instance && instance->engine && instance->engine->payload_set) {
609                 int i;
610                 for (i = 0; i < AST_RTP_MAX_PT; i++) {
611                         instance->engine->payload_set(instance, i, 0, NULL, 0);
612                 }
613         }
614 }
615
616 void ast_rtp_codecs_payloads_copy(struct ast_rtp_codecs *src, struct ast_rtp_codecs *dest, struct ast_rtp_instance *instance)
617 {
618         int i;
619
620         ast_rwlock_rdlock(&src->codecs_lock);
621         ast_rwlock_wrlock(&dest->codecs_lock);
622
623         for (i = 0; i < AST_VECTOR_SIZE(&src->payloads); i++) {
624                 struct ast_rtp_payload_type *type;
625
626                 type = AST_VECTOR_GET(&src->payloads, i);
627                 if (!type) {
628                         continue;
629                 }
630                 if (i < AST_VECTOR_SIZE(&dest->payloads)) {
631                         ao2_t_cleanup(AST_VECTOR_GET(&dest->payloads, i), "cleaning up vector element about to be replaced");
632                 }
633                 ast_debug(2, "Copying payload %d (%p) from %p to %p\n", i, type, src, dest);
634                 ao2_bump(type);
635                 AST_VECTOR_REPLACE(&dest->payloads, i, type);
636
637                 if (instance && instance->engine && instance->engine->payload_set) {
638                         instance->engine->payload_set(instance, i, type->asterisk_format, type->format, type->rtp_code);
639                 }
640         }
641         dest->framing = src->framing;
642         ast_rwlock_unlock(&dest->codecs_lock);
643         ast_rwlock_unlock(&src->codecs_lock);
644 }
645
646 void ast_rtp_codecs_payloads_set_m_type(struct ast_rtp_codecs *codecs, struct ast_rtp_instance *instance, int payload)
647 {
648         struct ast_rtp_payload_type *new_type;
649
650         if (payload < 0 || payload >= AST_RTP_MAX_PT) {
651                 return;
652         }
653
654         ast_rwlock_rdlock(&static_RTP_PT_lock);
655         new_type = ao2_bump(static_RTP_PT[payload]);
656         ast_rwlock_unlock(&static_RTP_PT_lock);
657         if (!new_type) {
658                 ast_debug(1, "Don't have a default tx payload type %d format for m type on %p\n",
659                         payload, codecs);
660                 return;
661         }
662
663         ast_debug(1, "Setting tx payload type %d based on m type on %p\n",
664                 payload, codecs);
665
666         ast_rwlock_wrlock(&codecs->codecs_lock);
667
668         if (payload < AST_VECTOR_SIZE(&codecs->payloads)) {
669                 ao2_t_cleanup(AST_VECTOR_GET(&codecs->payloads, payload), "cleaning up replaced payload type");
670         }
671         AST_VECTOR_REPLACE(&codecs->payloads, payload, new_type);
672
673         if (instance && instance->engine && instance->engine->payload_set) {
674                 instance->engine->payload_set(instance, payload, new_type->asterisk_format, new_type->format, new_type->rtp_code);
675         }
676
677         ast_rwlock_unlock(&codecs->codecs_lock);
678 }
679
680 int ast_rtp_codecs_payloads_set_rtpmap_type_rate(struct ast_rtp_codecs *codecs, struct ast_rtp_instance *instance, int pt,
681                                  char *mimetype, char *mimesubtype,
682                                  enum ast_rtp_options options,
683                                  unsigned int sample_rate)
684 {
685         unsigned int i;
686         int found = 0;
687
688         if (pt < 0 || pt >= AST_RTP_MAX_PT) {
689                 return -1; /* bogus payload type */
690         }
691
692         ast_rwlock_rdlock(&mime_types_lock);
693         ast_rwlock_wrlock(&codecs->codecs_lock);
694         for (i = 0; i < mime_types_len; ++i) {
695                 const struct ast_rtp_mime_type *t = &ast_rtp_mime_types[i];
696                 struct ast_rtp_payload_type *new_type;
697
698                 if (strcasecmp(mimesubtype, t->subtype)) {
699                         continue;
700                 }
701
702                 if (strcasecmp(mimetype, t->type)) {
703                         continue;
704                 }
705
706                 /* if both sample rates have been supplied, and they don't match,
707                  * then this not a match; if one has not been supplied, then the
708                  * rates are not compared */
709                 if (sample_rate && t->sample_rate &&
710                     (sample_rate != t->sample_rate)) {
711                         continue;
712                 }
713
714                 found = 1;
715
716                 new_type = ast_rtp_engine_alloc_payload_type();
717                 if (!new_type) {
718                         continue;
719                 }
720
721                 if (pt < AST_VECTOR_SIZE(&codecs->payloads)) {
722                         ao2_t_cleanup(AST_VECTOR_GET(&codecs->payloads, pt), "cleaning up replaced payload type");
723                 }
724
725                 new_type->payload = pt;
726                 new_type->asterisk_format = t->payload_type.asterisk_format;
727                 new_type->rtp_code = t->payload_type.rtp_code;
728                 if ((ast_format_cmp(t->payload_type.format, ast_format_g726) == AST_FORMAT_CMP_EQUAL) &&
729                                 t->payload_type.asterisk_format && (options & AST_RTP_OPT_G726_NONSTANDARD)) {
730                         new_type->format = ao2_bump(ast_format_g726_aal2);
731                 } else {
732                         new_type->format = ao2_bump(t->payload_type.format);
733                 }
734                 AST_VECTOR_REPLACE(&codecs->payloads, pt, new_type);
735
736                 if (instance && instance->engine && instance->engine->payload_set) {
737                         instance->engine->payload_set(instance, pt, new_type->asterisk_format, new_type->format, new_type->rtp_code);
738                 }
739
740                 break;
741         }
742         ast_rwlock_unlock(&codecs->codecs_lock);
743         ast_rwlock_unlock(&mime_types_lock);
744
745         return (found ? 0 : -2);
746 }
747
748 int ast_rtp_codecs_payloads_set_rtpmap_type(struct ast_rtp_codecs *codecs, struct ast_rtp_instance *instance, int payload, char *mimetype, char *mimesubtype, enum ast_rtp_options options)
749 {
750         return ast_rtp_codecs_payloads_set_rtpmap_type_rate(codecs, instance, payload, mimetype, mimesubtype, options, 0);
751 }
752
753 void ast_rtp_codecs_payloads_unset(struct ast_rtp_codecs *codecs, struct ast_rtp_instance *instance, int payload)
754 {
755         struct ast_rtp_payload_type *type;
756
757         if (payload < 0 || payload >= AST_RTP_MAX_PT) {
758                 return;
759         }
760
761         ast_debug(2, "Unsetting payload %d on %p\n", payload, codecs);
762
763         ast_rwlock_wrlock(&codecs->codecs_lock);
764         if (payload < AST_VECTOR_SIZE(&codecs->payloads)) {
765                 type = AST_VECTOR_GET(&codecs->payloads, payload);
766                 ao2_cleanup(type);
767                 AST_VECTOR_REPLACE(&codecs->payloads, payload, NULL);
768         }
769
770         if (instance && instance->engine && instance->engine->payload_set) {
771                 instance->engine->payload_set(instance, payload, 0, NULL, 0);
772         }
773
774         ast_rwlock_unlock(&codecs->codecs_lock);
775 }
776
777 struct ast_rtp_payload_type *ast_rtp_codecs_get_payload(struct ast_rtp_codecs *codecs, int payload)
778 {
779         struct ast_rtp_payload_type *type = NULL;
780
781         if (payload < 0 || payload >= AST_RTP_MAX_PT) {
782                 return NULL;
783         }
784
785         ast_rwlock_rdlock(&codecs->codecs_lock);
786         if (payload < AST_VECTOR_SIZE(&codecs->payloads)) {
787                 type = AST_VECTOR_GET(&codecs->payloads, payload);
788                 ao2_bump(type);
789         }
790         ast_rwlock_unlock(&codecs->codecs_lock);
791
792         if (!type) {
793                 ast_rwlock_rdlock(&static_RTP_PT_lock);
794                 type = ao2_bump(static_RTP_PT[payload]);
795                 ast_rwlock_unlock(&static_RTP_PT_lock);
796         }
797
798         return type;
799 }
800
801 int ast_rtp_codecs_payload_replace_format(struct ast_rtp_codecs *codecs, int payload, struct ast_format *format)
802 {
803         struct ast_rtp_payload_type *type;
804
805         if (payload < 0 || payload >= AST_RTP_MAX_PT || !format) {
806                 return -1;
807         }
808
809         type = ast_rtp_engine_alloc_payload_type();
810         if (!type) {
811                 return -1;
812         }
813         ao2_ref(format, +1);
814         type->format = format;
815         type->asterisk_format = 1;
816         type->payload = payload;
817
818         ast_rwlock_wrlock(&codecs->codecs_lock);
819         if (payload < AST_VECTOR_SIZE(&codecs->payloads)) {
820                 ao2_cleanup(AST_VECTOR_GET(&codecs->payloads, payload));
821         }
822         AST_VECTOR_REPLACE(&codecs->payloads, payload, type);
823         ast_rwlock_unlock(&codecs->codecs_lock);
824
825         return 0;
826 }
827
828 struct ast_format *ast_rtp_codecs_get_payload_format(struct ast_rtp_codecs *codecs, int payload)
829 {
830         struct ast_rtp_payload_type *type;
831         struct ast_format *format = NULL;
832
833         if (payload < 0 || payload >= AST_RTP_MAX_PT) {
834                 return NULL;
835         }
836
837         ast_rwlock_rdlock(&codecs->codecs_lock);
838         if (payload < AST_VECTOR_SIZE(&codecs->payloads)) {
839                 type = AST_VECTOR_GET(&codecs->payloads, payload);
840                 if (type && type->asterisk_format) {
841                         format = ao2_bump(type->format);
842                 }
843         }
844         ast_rwlock_unlock(&codecs->codecs_lock);
845
846         return format;
847 }
848
849 void ast_rtp_codecs_set_framing(struct ast_rtp_codecs *codecs, unsigned int framing)
850 {
851         if (!framing) {
852                 return;
853         }
854
855         ast_rwlock_wrlock(&codecs->codecs_lock);
856         codecs->framing = framing;
857         ast_rwlock_unlock(&codecs->codecs_lock);
858 }
859
860 unsigned int ast_rtp_codecs_get_framing(struct ast_rtp_codecs *codecs)
861 {
862         unsigned int framing;
863
864         ast_rwlock_rdlock(&codecs->codecs_lock);
865         framing = codecs->framing;
866         ast_rwlock_unlock(&codecs->codecs_lock);
867
868         return framing;
869 }
870
871 void ast_rtp_codecs_payload_formats(struct ast_rtp_codecs *codecs, struct ast_format_cap *astformats, int *nonastformats)
872 {
873         int i;
874
875         ast_format_cap_remove_by_type(astformats, AST_MEDIA_TYPE_UNKNOWN);
876         *nonastformats = 0;
877
878         ast_rwlock_rdlock(&codecs->codecs_lock);
879         for (i = 0; i < AST_VECTOR_SIZE(&codecs->payloads); i++) {
880                 struct ast_rtp_payload_type *type;
881
882                 type = AST_VECTOR_GET(&codecs->payloads, i);
883                 if (!type) {
884                         continue;
885                 }
886
887                 if (type->asterisk_format) {
888                         ast_format_cap_append(astformats, type->format, 0);
889                 } else {
890                         *nonastformats |= type->rtp_code;
891                 }
892         }
893
894         if (codecs->framing) {
895                 ast_format_cap_set_framing(astformats, codecs->framing);
896         }
897
898         ast_rwlock_unlock(&codecs->codecs_lock);
899 }
900
901 int ast_rtp_codecs_payload_code(struct ast_rtp_codecs *codecs, int asterisk_format, const struct ast_format *format, int code)
902 {
903         struct ast_rtp_payload_type *type;
904         int i;
905         int payload = -1;
906
907         ast_rwlock_rdlock(&codecs->codecs_lock);
908         for (i = 0; i < AST_VECTOR_SIZE(&codecs->payloads); i++) {
909                 type = AST_VECTOR_GET(&codecs->payloads, i);
910                 if (!type) {
911                         continue;
912                 }
913
914                 if ((asterisk_format && format && ast_format_cmp(format, type->format) == AST_FORMAT_CMP_EQUAL)
915                         || (!asterisk_format && type->rtp_code == code)) {
916                         payload = i;
917                         break;
918                 }
919         }
920         ast_rwlock_unlock(&codecs->codecs_lock);
921
922         if (payload < 0) {
923                 ast_rwlock_rdlock(&static_RTP_PT_lock);
924                 for (i = 0; i < AST_RTP_MAX_PT; i++) {
925                         if (!static_RTP_PT[i]) {
926                                 continue;
927                         }
928                         if (static_RTP_PT[i]->asterisk_format && asterisk_format && format &&
929                                 (ast_format_cmp(format, static_RTP_PT[i]->format) != AST_FORMAT_CMP_NOT_EQUAL)) {
930                                 payload = i;
931                                 break;
932                         } else if (!static_RTP_PT[i]->asterisk_format && !asterisk_format &&
933                                 (static_RTP_PT[i]->rtp_code == code)) {
934                                 payload = i;
935                                 break;
936                         }
937                 }
938                 ast_rwlock_unlock(&static_RTP_PT_lock);
939         }
940
941         return payload;
942 }
943
944 int ast_rtp_codecs_find_payload_code(struct ast_rtp_codecs *codecs, int code)
945 {
946         struct ast_rtp_payload_type *type;
947         int res = -1;
948
949         ast_rwlock_rdlock(&codecs->codecs_lock);
950         if (code < AST_VECTOR_SIZE(&codecs->payloads)) {
951                 type = AST_VECTOR_GET(&codecs->payloads, code);
952                 if (type) {
953                         res = type->payload;
954                 }
955         }
956         ast_rwlock_unlock(&codecs->codecs_lock);
957
958         return res;
959 }
960
961 const char *ast_rtp_lookup_mime_subtype2(const int asterisk_format, struct ast_format *format, int code, enum ast_rtp_options options)
962 {
963         int i;
964         const char *res = "";
965
966         ast_rwlock_rdlock(&mime_types_lock);
967         for (i = 0; i < mime_types_len; i++) {
968                 if (ast_rtp_mime_types[i].payload_type.asterisk_format && asterisk_format && format &&
969                         (ast_format_cmp(format, ast_rtp_mime_types[i].payload_type.format) != AST_FORMAT_CMP_NOT_EQUAL)) {
970                         if ((ast_format_cmp(format, ast_format_g726_aal2) == AST_FORMAT_CMP_EQUAL) &&
971                                         (options & AST_RTP_OPT_G726_NONSTANDARD)) {
972                                 res = "G726-32";
973                                 break;
974                         } else {
975                                 res = ast_rtp_mime_types[i].subtype;
976                                 break;
977                         }
978                 } else if (!ast_rtp_mime_types[i].payload_type.asterisk_format && !asterisk_format &&
979                         ast_rtp_mime_types[i].payload_type.rtp_code == code) {
980
981                         res = ast_rtp_mime_types[i].subtype;
982                         break;
983                 }
984         }
985         ast_rwlock_unlock(&mime_types_lock);
986
987         return res;
988 }
989
990 unsigned int ast_rtp_lookup_sample_rate2(int asterisk_format, struct ast_format *format, int code)
991 {
992         unsigned int i;
993         unsigned int res = 0;
994
995         ast_rwlock_rdlock(&mime_types_lock);
996         for (i = 0; i < mime_types_len; ++i) {
997                 if (ast_rtp_mime_types[i].payload_type.asterisk_format && asterisk_format && format &&
998                         (ast_format_cmp(format, ast_rtp_mime_types[i].payload_type.format) != AST_FORMAT_CMP_NOT_EQUAL)) {
999                         res = ast_rtp_mime_types[i].sample_rate;
1000                         break;
1001                 } else if (!ast_rtp_mime_types[i].payload_type.asterisk_format && !asterisk_format &&
1002                         ast_rtp_mime_types[i].payload_type.rtp_code == code) {
1003                         res = ast_rtp_mime_types[i].sample_rate;
1004                         break;
1005                 }
1006         }
1007         ast_rwlock_unlock(&mime_types_lock);
1008
1009         return res;
1010 }
1011
1012 char *ast_rtp_lookup_mime_multiple2(struct ast_str *buf, struct ast_format_cap *ast_format_capability, int rtp_capability, const int asterisk_format, enum ast_rtp_options options)
1013 {
1014         int found = 0;
1015         const char *name;
1016         if (!buf) {
1017                 return NULL;
1018         }
1019
1020
1021         if (asterisk_format) {
1022                 int x;
1023                 struct ast_format *tmp_fmt;
1024                 for (x = 0; x < ast_format_cap_count(ast_format_capability); x++) {
1025                         tmp_fmt = ast_format_cap_get_format(ast_format_capability, x);
1026                         name = ast_rtp_lookup_mime_subtype2(asterisk_format, tmp_fmt, 0, options);
1027                         ao2_ref(tmp_fmt, -1);
1028                         ast_str_append(&buf, 0, "%s|", name);
1029                         found = 1;
1030                 }
1031         } else {
1032                 int x;
1033                 ast_str_append(&buf, 0, "0x%x (", (unsigned int) rtp_capability);
1034                 for (x = 1; x <= AST_RTP_MAX; x <<= 1) {
1035                         if (rtp_capability & x) {
1036                                 name = ast_rtp_lookup_mime_subtype2(asterisk_format, NULL, x, options);
1037                                 ast_str_append(&buf, 0, "%s|", name);
1038                                 found = 1;
1039                         }
1040                 }
1041         }
1042
1043         ast_str_append(&buf, 0, "%s", found ? ")" : "nothing)");
1044
1045         return ast_str_buffer(buf);
1046 }
1047
1048 int ast_rtp_instance_dtmf_begin(struct ast_rtp_instance *instance, char digit)
1049 {
1050         return instance->engine->dtmf_begin ? instance->engine->dtmf_begin(instance, digit) : -1;
1051 }
1052
1053 int ast_rtp_instance_dtmf_end(struct ast_rtp_instance *instance, char digit)
1054 {
1055         return instance->engine->dtmf_end ? instance->engine->dtmf_end(instance, digit) : -1;
1056 }
1057 int ast_rtp_instance_dtmf_end_with_duration(struct ast_rtp_instance *instance, char digit, unsigned int duration)
1058 {
1059         return instance->engine->dtmf_end_with_duration ? instance->engine->dtmf_end_with_duration(instance, digit, duration) : -1;
1060 }
1061
1062 int ast_rtp_instance_dtmf_mode_set(struct ast_rtp_instance *instance, enum ast_rtp_dtmf_mode dtmf_mode)
1063 {
1064         return (!instance->engine->dtmf_mode_set || instance->engine->dtmf_mode_set(instance, dtmf_mode)) ? -1 : 0;
1065 }
1066
1067 enum ast_rtp_dtmf_mode ast_rtp_instance_dtmf_mode_get(struct ast_rtp_instance *instance)
1068 {
1069         return instance->engine->dtmf_mode_get ? instance->engine->dtmf_mode_get(instance) : 0;
1070 }
1071
1072 void ast_rtp_instance_update_source(struct ast_rtp_instance *instance)
1073 {
1074         if (instance->engine->update_source) {
1075                 instance->engine->update_source(instance);
1076         }
1077 }
1078
1079 void ast_rtp_instance_change_source(struct ast_rtp_instance *instance)
1080 {
1081         if (instance->engine->change_source) {
1082                 instance->engine->change_source(instance);
1083         }
1084 }
1085
1086 int ast_rtp_instance_set_qos(struct ast_rtp_instance *instance, int tos, int cos, const char *desc)
1087 {
1088         return instance->engine->qos ? instance->engine->qos(instance, tos, cos, desc) : -1;
1089 }
1090
1091 void ast_rtp_instance_stop(struct ast_rtp_instance *instance)
1092 {
1093         if (instance->engine->stop) {
1094                 instance->engine->stop(instance);
1095         }
1096 }
1097
1098 int ast_rtp_instance_fd(struct ast_rtp_instance *instance, int rtcp)
1099 {
1100         return instance->engine->fd ? instance->engine->fd(instance, rtcp) : -1;
1101 }
1102
1103 struct ast_rtp_glue *ast_rtp_instance_get_glue(const char *type)
1104 {
1105         struct ast_rtp_glue *glue = NULL;
1106
1107         AST_RWLIST_RDLOCK(&glues);
1108
1109         AST_RWLIST_TRAVERSE(&glues, glue, entry) {
1110                 if (!strcasecmp(glue->type, type)) {
1111                         break;
1112                 }
1113         }
1114
1115         AST_RWLIST_UNLOCK(&glues);
1116
1117         return glue;
1118 }
1119
1120 /*!
1121  * \brief Conditionally unref an rtp instance
1122  */
1123 static void unref_instance_cond(struct ast_rtp_instance **instance)
1124 {
1125         if (*instance) {
1126                 ao2_ref(*instance, -1);
1127                 *instance = NULL;
1128         }
1129 }
1130
1131 struct ast_rtp_instance *ast_rtp_instance_get_bridged(struct ast_rtp_instance *instance)
1132 {
1133         return instance->bridged;
1134 }
1135
1136 void ast_rtp_instance_set_bridged(struct ast_rtp_instance *instance, struct ast_rtp_instance *bridged)
1137 {
1138         instance->bridged = bridged;
1139 }
1140
1141 void ast_rtp_instance_early_bridge_make_compatible(struct ast_channel *c_dst, struct ast_channel *c_src)
1142 {
1143         struct ast_rtp_instance *instance_dst = NULL, *instance_src = NULL,
1144                 *vinstance_dst = NULL, *vinstance_src = NULL,
1145                 *tinstance_dst = NULL, *tinstance_src = NULL;
1146         struct ast_rtp_glue *glue_dst, *glue_src;
1147         enum ast_rtp_glue_result audio_glue_dst_res = AST_RTP_GLUE_RESULT_FORBID, video_glue_dst_res = AST_RTP_GLUE_RESULT_FORBID;
1148         enum ast_rtp_glue_result audio_glue_src_res = AST_RTP_GLUE_RESULT_FORBID, video_glue_src_res = AST_RTP_GLUE_RESULT_FORBID;
1149         struct ast_format_cap *cap_dst = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
1150         struct ast_format_cap *cap_src = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
1151
1152         /* Lock both channels so we can look for the glue that binds them together */
1153         ast_channel_lock_both(c_dst, c_src);
1154
1155         if (!cap_src || !cap_dst) {
1156                 goto done;
1157         }
1158
1159         /* Grab glue that binds each channel to something using the RTP engine */
1160         if (!(glue_dst = ast_rtp_instance_get_glue(ast_channel_tech(c_dst)->type)) || !(glue_src = ast_rtp_instance_get_glue(ast_channel_tech(c_src)->type))) {
1161                 ast_debug(1, "Can't find native functions for channel '%s'\n", glue_dst ? ast_channel_name(c_src) : ast_channel_name(c_dst));
1162                 goto done;
1163         }
1164
1165         audio_glue_dst_res = glue_dst->get_rtp_info(c_dst, &instance_dst);
1166         video_glue_dst_res = glue_dst->get_vrtp_info ? glue_dst->get_vrtp_info(c_dst, &vinstance_dst) : AST_RTP_GLUE_RESULT_FORBID;
1167
1168         audio_glue_src_res = glue_src->get_rtp_info(c_src, &instance_src);
1169         video_glue_src_res = glue_src->get_vrtp_info ? glue_src->get_vrtp_info(c_src, &vinstance_src) : AST_RTP_GLUE_RESULT_FORBID;
1170
1171         /* If we are carrying video, and both sides are not going to remotely bridge... fail the native bridge */
1172         if (video_glue_dst_res != AST_RTP_GLUE_RESULT_FORBID && (audio_glue_dst_res != AST_RTP_GLUE_RESULT_REMOTE || video_glue_dst_res != AST_RTP_GLUE_RESULT_REMOTE)) {
1173                 audio_glue_dst_res = AST_RTP_GLUE_RESULT_FORBID;
1174         }
1175         if (video_glue_src_res != AST_RTP_GLUE_RESULT_FORBID && (audio_glue_src_res != AST_RTP_GLUE_RESULT_REMOTE || video_glue_src_res != AST_RTP_GLUE_RESULT_REMOTE)) {
1176                 audio_glue_src_res = AST_RTP_GLUE_RESULT_FORBID;
1177         }
1178         if (audio_glue_dst_res == AST_RTP_GLUE_RESULT_REMOTE && (video_glue_dst_res == AST_RTP_GLUE_RESULT_FORBID || video_glue_dst_res == AST_RTP_GLUE_RESULT_REMOTE) && glue_dst->get_codec) {
1179                 glue_dst->get_codec(c_dst, cap_dst);
1180         }
1181         if (audio_glue_src_res == AST_RTP_GLUE_RESULT_REMOTE && (video_glue_src_res == AST_RTP_GLUE_RESULT_FORBID || video_glue_src_res == AST_RTP_GLUE_RESULT_REMOTE) && glue_src->get_codec) {
1182                 glue_src->get_codec(c_src, cap_src);
1183         }
1184
1185         /* If any sort of bridge is forbidden just completely bail out and go back to generic bridging */
1186         if (audio_glue_dst_res != AST_RTP_GLUE_RESULT_REMOTE || audio_glue_src_res != AST_RTP_GLUE_RESULT_REMOTE) {
1187                 goto done;
1188         }
1189
1190         /* Make sure we have matching codecs */
1191         if (!ast_format_cap_iscompatible(cap_dst, cap_src)) {
1192                 goto done;
1193         }
1194
1195         ast_rtp_codecs_payloads_copy(&instance_src->codecs, &instance_dst->codecs, instance_dst);
1196
1197         if (vinstance_dst && vinstance_src) {
1198                 ast_rtp_codecs_payloads_copy(&vinstance_src->codecs, &vinstance_dst->codecs, vinstance_dst);
1199         }
1200         if (tinstance_dst && tinstance_src) {
1201                 ast_rtp_codecs_payloads_copy(&tinstance_src->codecs, &tinstance_dst->codecs, tinstance_dst);
1202         }
1203
1204         if (glue_dst->update_peer(c_dst, instance_src, vinstance_src, tinstance_src, cap_src, 0)) {
1205                 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n",
1206                         ast_channel_name(c_dst), ast_channel_name(c_src));
1207         } else {
1208                 ast_debug(1, "Seeded SDP of '%s' with that of '%s'\n",
1209                         ast_channel_name(c_dst), ast_channel_name(c_src));
1210         }
1211
1212 done:
1213         ast_channel_unlock(c_dst);
1214         ast_channel_unlock(c_src);
1215
1216         ao2_cleanup(cap_dst);
1217         ao2_cleanup(cap_src);
1218
1219         unref_instance_cond(&instance_dst);
1220         unref_instance_cond(&instance_src);
1221         unref_instance_cond(&vinstance_dst);
1222         unref_instance_cond(&vinstance_src);
1223         unref_instance_cond(&tinstance_dst);
1224         unref_instance_cond(&tinstance_src);
1225 }
1226
1227 int ast_rtp_instance_early_bridge(struct ast_channel *c0, struct ast_channel *c1)
1228 {
1229         struct ast_rtp_instance *instance0 = NULL, *instance1 = NULL,
1230                         *vinstance0 = NULL, *vinstance1 = NULL,
1231                         *tinstance0 = NULL, *tinstance1 = NULL;
1232         struct ast_rtp_glue *glue0, *glue1;
1233         enum ast_rtp_glue_result audio_glue0_res = AST_RTP_GLUE_RESULT_FORBID, video_glue0_res = AST_RTP_GLUE_RESULT_FORBID;
1234         enum ast_rtp_glue_result audio_glue1_res = AST_RTP_GLUE_RESULT_FORBID, video_glue1_res = AST_RTP_GLUE_RESULT_FORBID;
1235         struct ast_format_cap *cap0 = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
1236         struct ast_format_cap *cap1 = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
1237
1238         /* If there is no second channel just immediately bail out, we are of no use in that scenario */
1239         if (!c1 || !cap1 || !cap0) {
1240                 ao2_cleanup(cap0);
1241                 ao2_cleanup(cap1);
1242                 return -1;
1243         }
1244
1245         /* Lock both channels so we can look for the glue that binds them together */
1246         ast_channel_lock_both(c0, c1);
1247
1248         /* Grab glue that binds each channel to something using the RTP engine */
1249         if (!(glue0 = ast_rtp_instance_get_glue(ast_channel_tech(c0)->type)) || !(glue1 = ast_rtp_instance_get_glue(ast_channel_tech(c1)->type))) {
1250                 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", glue0 ? ast_channel_name(c1) : ast_channel_name(c0));
1251                 goto done;
1252         }
1253
1254         audio_glue0_res = glue0->get_rtp_info(c0, &instance0);
1255         video_glue0_res = glue0->get_vrtp_info ? glue0->get_vrtp_info(c0, &vinstance0) : AST_RTP_GLUE_RESULT_FORBID;
1256
1257         audio_glue1_res = glue1->get_rtp_info(c1, &instance1);
1258         video_glue1_res = glue1->get_vrtp_info ? glue1->get_vrtp_info(c1, &vinstance1) : AST_RTP_GLUE_RESULT_FORBID;
1259
1260         /* If we are carrying video, and both sides are not going to remotely bridge... fail the native bridge */
1261         if (video_glue0_res != AST_RTP_GLUE_RESULT_FORBID && (audio_glue0_res != AST_RTP_GLUE_RESULT_REMOTE || video_glue0_res != AST_RTP_GLUE_RESULT_REMOTE)) {
1262                 audio_glue0_res = AST_RTP_GLUE_RESULT_FORBID;
1263         }
1264         if (video_glue1_res != AST_RTP_GLUE_RESULT_FORBID && (audio_glue1_res != AST_RTP_GLUE_RESULT_REMOTE || video_glue1_res != AST_RTP_GLUE_RESULT_REMOTE)) {
1265                 audio_glue1_res = AST_RTP_GLUE_RESULT_FORBID;
1266         }
1267         if (audio_glue0_res == AST_RTP_GLUE_RESULT_REMOTE && (video_glue0_res == AST_RTP_GLUE_RESULT_FORBID || video_glue0_res == AST_RTP_GLUE_RESULT_REMOTE) && glue0->get_codec) {
1268                 glue0->get_codec(c0, cap0);
1269         }
1270         if (audio_glue1_res == AST_RTP_GLUE_RESULT_REMOTE && (video_glue1_res == AST_RTP_GLUE_RESULT_FORBID || video_glue1_res == AST_RTP_GLUE_RESULT_REMOTE) && glue1->get_codec) {
1271                 glue1->get_codec(c1, cap1);
1272         }
1273
1274         /* If any sort of bridge is forbidden just completely bail out and go back to generic bridging */
1275         if (audio_glue0_res != AST_RTP_GLUE_RESULT_REMOTE || audio_glue1_res != AST_RTP_GLUE_RESULT_REMOTE) {
1276                 goto done;
1277         }
1278
1279         /* Make sure we have matching codecs */
1280         if (!ast_format_cap_iscompatible(cap0, cap1)) {
1281                 goto done;
1282         }
1283
1284         /* Bridge media early */
1285         if (glue0->update_peer(c0, instance1, vinstance1, tinstance1, cap1, 0)) {
1286                 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", ast_channel_name(c0), c1 ? ast_channel_name(c1) : "<unspecified>");
1287         }
1288
1289 done:
1290         ast_channel_unlock(c0);
1291         ast_channel_unlock(c1);
1292
1293         ao2_cleanup(cap0);
1294         ao2_cleanup(cap1);
1295
1296         unref_instance_cond(&instance0);
1297         unref_instance_cond(&instance1);
1298         unref_instance_cond(&vinstance0);
1299         unref_instance_cond(&vinstance1);
1300         unref_instance_cond(&tinstance0);
1301         unref_instance_cond(&tinstance1);
1302
1303         ast_debug(1, "Setting early bridge SDP of '%s' with that of '%s'\n", ast_channel_name(c0), c1 ? ast_channel_name(c1) : "<unspecified>");
1304
1305         return 0;
1306 }
1307
1308 int ast_rtp_red_init(struct ast_rtp_instance *instance, int buffer_time, int *payloads, int generations)
1309 {
1310         return instance->engine->red_init ? instance->engine->red_init(instance, buffer_time, payloads, generations) : -1;
1311 }
1312
1313 int ast_rtp_red_buffer(struct ast_rtp_instance *instance, struct ast_frame *frame)
1314 {
1315         return instance->engine->red_buffer ? instance->engine->red_buffer(instance, frame) : -1;
1316 }
1317
1318 int ast_rtp_instance_get_stats(struct ast_rtp_instance *instance, struct ast_rtp_instance_stats *stats, enum ast_rtp_instance_stat stat)
1319 {
1320         return instance->engine->get_stat ? instance->engine->get_stat(instance, stats, stat) : -1;
1321 }
1322
1323 char *ast_rtp_instance_get_quality(struct ast_rtp_instance *instance, enum ast_rtp_instance_stat_field field, char *buf, size_t size)
1324 {
1325         struct ast_rtp_instance_stats stats = { 0, };
1326         enum ast_rtp_instance_stat stat;
1327
1328         /* Determine what statistics we will need to retrieve based on field passed in */
1329         if (field == AST_RTP_INSTANCE_STAT_FIELD_QUALITY) {
1330                 stat = AST_RTP_INSTANCE_STAT_ALL;
1331         } else if (field == AST_RTP_INSTANCE_STAT_FIELD_QUALITY_JITTER) {
1332                 stat = AST_RTP_INSTANCE_STAT_COMBINED_JITTER;
1333         } else if (field == AST_RTP_INSTANCE_STAT_FIELD_QUALITY_LOSS) {
1334                 stat = AST_RTP_INSTANCE_STAT_COMBINED_LOSS;
1335         } else if (field == AST_RTP_INSTANCE_STAT_FIELD_QUALITY_RTT) {
1336                 stat = AST_RTP_INSTANCE_STAT_COMBINED_RTT;
1337         } else {
1338                 return NULL;
1339         }
1340
1341         /* Attempt to actually retrieve the statistics we need to generate the quality string */
1342         if (ast_rtp_instance_get_stats(instance, &stats, stat)) {
1343                 return NULL;
1344         }
1345
1346         /* Now actually fill the buffer with the good information */
1347         if (field == AST_RTP_INSTANCE_STAT_FIELD_QUALITY) {
1348                 snprintf(buf, size, "ssrc=%u;themssrc=%u;lp=%u;rxjitter=%f;rxcount=%u;txjitter=%f;txcount=%u;rlp=%u;rtt=%f",
1349                          stats.local_ssrc, stats.remote_ssrc, stats.rxploss, stats.rxjitter, stats.rxcount, stats.txjitter, stats.txcount, stats.txploss, stats.rtt);
1350         } else if (field == AST_RTP_INSTANCE_STAT_FIELD_QUALITY_JITTER) {
1351                 snprintf(buf, size, "minrxjitter=%f;maxrxjitter=%f;avgrxjitter=%f;stdevrxjitter=%f;reported_minjitter=%f;reported_maxjitter=%f;reported_avgjitter=%f;reported_stdevjitter=%f;",
1352                          stats.local_minjitter, stats.local_maxjitter, stats.local_normdevjitter, sqrt(stats.local_stdevjitter), stats.remote_minjitter, stats.remote_maxjitter, stats.remote_normdevjitter, sqrt(stats.remote_stdevjitter));
1353         } else if (field == AST_RTP_INSTANCE_STAT_FIELD_QUALITY_LOSS) {
1354                 snprintf(buf, size, "minrxlost=%f;maxrxlost=%f;avgrxlost=%f;stdevrxlost=%f;reported_minlost=%f;reported_maxlost=%f;reported_avglost=%f;reported_stdevlost=%f;",
1355                          stats.local_minrxploss, stats.local_maxrxploss, stats.local_normdevrxploss, sqrt(stats.local_stdevrxploss), stats.remote_minrxploss, stats.remote_maxrxploss, stats.remote_normdevrxploss, sqrt(stats.remote_stdevrxploss));
1356         } else if (field == AST_RTP_INSTANCE_STAT_FIELD_QUALITY_RTT) {
1357                 snprintf(buf, size, "minrtt=%f;maxrtt=%f;avgrtt=%f;stdevrtt=%f;", stats.minrtt, stats.maxrtt, stats.normdevrtt, stats.stdevrtt);
1358         }
1359
1360         return buf;
1361 }
1362
1363 void ast_rtp_instance_set_stats_vars(struct ast_channel *chan, struct ast_rtp_instance *instance)
1364 {
1365         char quality_buf[AST_MAX_USER_FIELD];
1366         char *quality;
1367         struct ast_channel *bridge = ast_channel_bridge_peer(chan);
1368
1369         ast_channel_lock(chan);
1370         ast_channel_stage_snapshot(chan);
1371         ast_channel_unlock(chan);
1372         if (bridge) {
1373                 ast_channel_lock(bridge);
1374                 ast_channel_stage_snapshot(bridge);
1375                 ast_channel_unlock(bridge);
1376         }
1377
1378         quality = ast_rtp_instance_get_quality(instance, AST_RTP_INSTANCE_STAT_FIELD_QUALITY,
1379                 quality_buf, sizeof(quality_buf));
1380         if (quality) {
1381                 pbx_builtin_setvar_helper(chan, "RTPAUDIOQOS", quality);
1382                 if (bridge) {
1383                         pbx_builtin_setvar_helper(bridge, "RTPAUDIOQOSBRIDGED", quality);
1384                 }
1385         }
1386
1387         quality = ast_rtp_instance_get_quality(instance,
1388                 AST_RTP_INSTANCE_STAT_FIELD_QUALITY_JITTER, quality_buf, sizeof(quality_buf));
1389         if (quality) {
1390                 pbx_builtin_setvar_helper(chan, "RTPAUDIOQOSJITTER", quality);
1391                 if (bridge) {
1392                         pbx_builtin_setvar_helper(bridge, "RTPAUDIOQOSJITTERBRIDGED", quality);
1393                 }
1394         }
1395
1396         quality = ast_rtp_instance_get_quality(instance,
1397                 AST_RTP_INSTANCE_STAT_FIELD_QUALITY_LOSS, quality_buf, sizeof(quality_buf));
1398         if (quality) {
1399                 pbx_builtin_setvar_helper(chan, "RTPAUDIOQOSLOSS", quality);
1400                 if (bridge) {
1401                         pbx_builtin_setvar_helper(bridge, "RTPAUDIOQOSLOSSBRIDGED", quality);
1402                 }
1403         }
1404
1405         quality = ast_rtp_instance_get_quality(instance,
1406                 AST_RTP_INSTANCE_STAT_FIELD_QUALITY_RTT, quality_buf, sizeof(quality_buf));
1407         if (quality) {
1408                 pbx_builtin_setvar_helper(chan, "RTPAUDIOQOSRTT", quality);
1409                 if (bridge) {
1410                         pbx_builtin_setvar_helper(bridge, "RTPAUDIOQOSRTTBRIDGED", quality);
1411                 }
1412         }
1413
1414         ast_channel_lock(chan);
1415         ast_channel_stage_snapshot_done(chan);
1416         ast_channel_unlock(chan);
1417         if (bridge) {
1418                 ast_channel_lock(bridge);
1419                 ast_channel_stage_snapshot_done(bridge);
1420                 ast_channel_unlock(bridge);
1421                 ast_channel_unref(bridge);
1422         }
1423 }
1424
1425 int ast_rtp_instance_set_read_format(struct ast_rtp_instance *instance, struct ast_format *format)
1426 {
1427         return instance->engine->set_read_format ? instance->engine->set_read_format(instance, format) : -1;
1428 }
1429
1430 int ast_rtp_instance_set_write_format(struct ast_rtp_instance *instance, struct ast_format *format)
1431 {
1432         return instance->engine->set_write_format ? instance->engine->set_write_format(instance, format) : -1;
1433 }
1434
1435 int ast_rtp_instance_make_compatible(struct ast_channel *chan, struct ast_rtp_instance *instance, struct ast_channel *peer)
1436 {
1437         struct ast_rtp_glue *glue;
1438         struct ast_rtp_instance *peer_instance = NULL;
1439         int res = -1;
1440
1441         if (!instance->engine->make_compatible) {
1442                 return -1;
1443         }
1444
1445         ast_channel_lock(peer);
1446
1447         if (!(glue = ast_rtp_instance_get_glue(ast_channel_tech(peer)->type))) {
1448                 ast_channel_unlock(peer);
1449                 return -1;
1450         }
1451
1452         glue->get_rtp_info(peer, &peer_instance);
1453         if (!peer_instance) {
1454                 ast_log(LOG_ERROR, "Unable to get_rtp_info for peer type %s\n", glue->type);
1455                 ast_channel_unlock(peer);
1456                 return -1;
1457         }
1458         if (peer_instance->engine != instance->engine) {
1459                 ast_log(LOG_ERROR, "Peer engine mismatch for type %s\n", glue->type);
1460                 ast_channel_unlock(peer);
1461                 ao2_ref(peer_instance, -1);
1462                 return -1;
1463         }
1464
1465         res = instance->engine->make_compatible(chan, instance, peer, peer_instance);
1466
1467         ast_channel_unlock(peer);
1468
1469         ao2_ref(peer_instance, -1);
1470         peer_instance = NULL;
1471
1472         return res;
1473 }
1474
1475 void ast_rtp_instance_available_formats(struct ast_rtp_instance *instance, struct ast_format_cap *to_endpoint, struct ast_format_cap *to_asterisk, struct ast_format_cap *result)
1476 {
1477         if (instance->engine->available_formats) {
1478                 instance->engine->available_formats(instance, to_endpoint, to_asterisk, result);
1479                 if (ast_format_cap_count(result)) {
1480                         return;
1481                 }
1482         }
1483
1484         ast_translate_available_formats(to_endpoint, to_asterisk, result);
1485 }
1486
1487 int ast_rtp_instance_activate(struct ast_rtp_instance *instance)
1488 {
1489         return instance->engine->activate ? instance->engine->activate(instance) : 0;
1490 }
1491
1492 void ast_rtp_instance_stun_request(struct ast_rtp_instance *instance,
1493                                    struct ast_sockaddr *suggestion,
1494                                    const char *username)
1495 {
1496         if (instance->engine->stun_request) {
1497                 instance->engine->stun_request(instance, suggestion, username);
1498         }
1499 }
1500
1501 void ast_rtp_instance_set_timeout(struct ast_rtp_instance *instance, int timeout)
1502 {
1503         instance->timeout = timeout;
1504 }
1505
1506 void ast_rtp_instance_set_hold_timeout(struct ast_rtp_instance *instance, int timeout)
1507 {
1508         instance->holdtimeout = timeout;
1509 }
1510
1511 void ast_rtp_instance_set_keepalive(struct ast_rtp_instance *instance, int interval)
1512 {
1513         instance->keepalive = interval;
1514 }
1515
1516 int ast_rtp_instance_get_timeout(struct ast_rtp_instance *instance)
1517 {
1518         return instance->timeout;
1519 }
1520
1521 int ast_rtp_instance_get_hold_timeout(struct ast_rtp_instance *instance)
1522 {
1523         return instance->holdtimeout;
1524 }
1525
1526 int ast_rtp_instance_get_keepalive(struct ast_rtp_instance *instance)
1527 {
1528         return instance->keepalive;
1529 }
1530
1531 struct ast_rtp_engine *ast_rtp_instance_get_engine(struct ast_rtp_instance *instance)
1532 {
1533         return instance->engine;
1534 }
1535
1536 struct ast_rtp_glue *ast_rtp_instance_get_active_glue(struct ast_rtp_instance *instance)
1537 {
1538         return instance->glue;
1539 }
1540
1541 int ast_rtp_engine_register_srtp(struct ast_srtp_res *srtp_res, struct ast_srtp_policy_res *policy_res)
1542 {
1543         if (res_srtp || res_srtp_policy) {
1544                 return -1;
1545         }
1546         if (!srtp_res || !policy_res) {
1547                 return -1;
1548         }
1549
1550         res_srtp = srtp_res;
1551         res_srtp_policy = policy_res;
1552
1553         return 0;
1554 }
1555
1556 void ast_rtp_engine_unregister_srtp(void)
1557 {
1558         res_srtp = NULL;
1559         res_srtp_policy = NULL;
1560 }
1561
1562 int ast_rtp_engine_srtp_is_registered(void)
1563 {
1564         return res_srtp && res_srtp_policy;
1565 }
1566
1567 int ast_rtp_instance_add_srtp_policy(struct ast_rtp_instance *instance, struct ast_srtp_policy *remote_policy, struct ast_srtp_policy *local_policy)
1568 {
1569         int res = 0;
1570
1571         if (!res_srtp) {
1572                 return -1;
1573         }
1574
1575         if (!instance->srtp) {
1576                 res = res_srtp->create(&instance->srtp, instance, remote_policy);
1577         } else {
1578                 res = res_srtp->replace(&instance->srtp, instance, remote_policy);
1579         }
1580         if (!res) {
1581                 res = res_srtp->add_stream(instance->srtp, local_policy);
1582         }
1583
1584         return res;
1585 }
1586
1587 struct ast_srtp *ast_rtp_instance_get_srtp(struct ast_rtp_instance *instance)
1588 {
1589         return instance->srtp;
1590 }
1591
1592 int ast_rtp_instance_sendcng(struct ast_rtp_instance *instance, int level)
1593 {
1594         if (instance->engine->sendcng) {
1595                 return instance->engine->sendcng(instance, level);
1596         }
1597
1598         return -1;
1599 }
1600
1601 struct ast_rtp_engine_ice *ast_rtp_instance_get_ice(struct ast_rtp_instance *instance)
1602 {
1603         return instance->engine->ice;
1604 }
1605
1606 struct ast_rtp_engine_dtls *ast_rtp_instance_get_dtls(struct ast_rtp_instance *instance)
1607 {
1608         return instance->engine->dtls;
1609 }
1610
1611 int ast_rtp_dtls_cfg_parse(struct ast_rtp_dtls_cfg *dtls_cfg, const char *name, const char *value)
1612 {
1613         if (!strcasecmp(name, "dtlsenable")) {
1614                 dtls_cfg->enabled = ast_true(value) ? 1 : 0;
1615         } else if (!strcasecmp(name, "dtlsverify")) {
1616                 if (!strcasecmp(value, "yes")) {
1617                         dtls_cfg->verify = AST_RTP_DTLS_VERIFY_FINGERPRINT | AST_RTP_DTLS_VERIFY_CERTIFICATE;
1618                 } else if (!strcasecmp(value, "fingerprint")) {
1619                         dtls_cfg->verify = AST_RTP_DTLS_VERIFY_FINGERPRINT;
1620                 } else if (!strcasecmp(value, "certificate")) {
1621                         dtls_cfg->verify = AST_RTP_DTLS_VERIFY_CERTIFICATE;
1622                 } else if (!strcasecmp(value, "no")) {
1623                         dtls_cfg->verify = AST_RTP_DTLS_VERIFY_NONE;
1624                 } else {
1625                         return -1;
1626                 }
1627         } else if (!strcasecmp(name, "dtlsrekey")) {
1628                 if (sscanf(value, "%30u", &dtls_cfg->rekey) != 1) {
1629                         return -1;
1630                 }
1631         } else if (!strcasecmp(name, "dtlscertfile")) {
1632                 ast_free(dtls_cfg->certfile);
1633                 dtls_cfg->certfile = ast_strdup(value);
1634         } else if (!strcasecmp(name, "dtlsprivatekey")) {
1635                 ast_free(dtls_cfg->pvtfile);
1636                 dtls_cfg->pvtfile = ast_strdup(value);
1637         } else if (!strcasecmp(name, "dtlscipher")) {
1638                 ast_free(dtls_cfg->cipher);
1639                 dtls_cfg->cipher = ast_strdup(value);
1640         } else if (!strcasecmp(name, "dtlscafile")) {
1641                 ast_free(dtls_cfg->cafile);
1642                 dtls_cfg->cafile = ast_strdup(value);
1643         } else if (!strcasecmp(name, "dtlscapath") || !strcasecmp(name, "dtlscadir")) {
1644                 ast_free(dtls_cfg->capath);
1645                 dtls_cfg->capath = ast_strdup(value);
1646         } else if (!strcasecmp(name, "dtlssetup")) {
1647                 if (!strcasecmp(value, "active")) {
1648                         dtls_cfg->default_setup = AST_RTP_DTLS_SETUP_ACTIVE;
1649                 } else if (!strcasecmp(value, "passive")) {
1650                         dtls_cfg->default_setup = AST_RTP_DTLS_SETUP_PASSIVE;
1651                 } else if (!strcasecmp(value, "actpass")) {
1652                         dtls_cfg->default_setup = AST_RTP_DTLS_SETUP_ACTPASS;
1653                 }
1654         } else if (!strcasecmp(name, "dtlsfingerprint")) {
1655                 if (!strcasecmp(value, "sha-256")) {
1656                         dtls_cfg->hash = AST_RTP_DTLS_HASH_SHA256;
1657                 } else if (!strcasecmp(value, "sha-1")) {
1658                         dtls_cfg->hash = AST_RTP_DTLS_HASH_SHA1;
1659                 }
1660         } else {
1661                 return -1;
1662         }
1663
1664         return 0;
1665 }
1666
1667 void ast_rtp_dtls_cfg_copy(const struct ast_rtp_dtls_cfg *src_cfg, struct ast_rtp_dtls_cfg *dst_cfg)
1668 {
1669         ast_rtp_dtls_cfg_free(dst_cfg);         /* Prevent a double-call leaking memory via ast_strdup */
1670
1671         dst_cfg->enabled = src_cfg->enabled;
1672         dst_cfg->verify = src_cfg->verify;
1673         dst_cfg->rekey = src_cfg->rekey;
1674         dst_cfg->suite = src_cfg->suite;
1675         dst_cfg->hash = src_cfg->hash;
1676         dst_cfg->certfile = ast_strdup(src_cfg->certfile);
1677         dst_cfg->pvtfile = ast_strdup(src_cfg->pvtfile);
1678         dst_cfg->cipher = ast_strdup(src_cfg->cipher);
1679         dst_cfg->cafile = ast_strdup(src_cfg->cafile);
1680         dst_cfg->capath = ast_strdup(src_cfg->capath);
1681         dst_cfg->default_setup = src_cfg->default_setup;
1682 }
1683
1684 void ast_rtp_dtls_cfg_free(struct ast_rtp_dtls_cfg *dtls_cfg)
1685 {
1686         ast_free(dtls_cfg->certfile);
1687         dtls_cfg->certfile = NULL;
1688         ast_free(dtls_cfg->pvtfile);
1689         dtls_cfg->pvtfile = NULL;
1690         ast_free(dtls_cfg->cipher);
1691         dtls_cfg->cipher = NULL;
1692         ast_free(dtls_cfg->cafile);
1693         dtls_cfg->cafile = NULL;
1694         ast_free(dtls_cfg->capath);
1695         dtls_cfg->capath = NULL;
1696 }
1697
1698 /*! \internal
1699  * \brief Small helper routine that cleans up entry i in
1700  * \c ast_rtp_mime_types.
1701  */
1702 static void rtp_engine_mime_type_cleanup(int i)
1703 {
1704         ao2_cleanup(ast_rtp_mime_types[i].payload_type.format);
1705         memset(&ast_rtp_mime_types[i], 0, sizeof(struct ast_rtp_mime_type));
1706 }
1707
1708 static void set_next_mime_type(struct ast_format *format, int rtp_code, const char *type, const char *subtype, unsigned int sample_rate)
1709 {
1710         int x;
1711
1712         ast_rwlock_wrlock(&mime_types_lock);
1713
1714         x = mime_types_len;
1715         if (ARRAY_LEN(ast_rtp_mime_types) <= x) {
1716                 ast_rwlock_unlock(&mime_types_lock);
1717                 return;
1718         }
1719
1720         /* Make sure any previous value in ast_rtp_mime_types is cleaned up */
1721         memset(&ast_rtp_mime_types[x], 0, sizeof(struct ast_rtp_mime_type));    
1722         if (format) {
1723                 ast_rtp_mime_types[x].payload_type.asterisk_format = 1;
1724                 ast_rtp_mime_types[x].payload_type.format = ao2_bump(format);
1725         } else {
1726                 ast_rtp_mime_types[x].payload_type.rtp_code = rtp_code;
1727         }
1728         ast_copy_string(ast_rtp_mime_types[x].type, type, sizeof(ast_rtp_mime_types[x].type));
1729         ast_copy_string(ast_rtp_mime_types[x].subtype, subtype, sizeof(ast_rtp_mime_types[x].subtype));
1730         ast_rtp_mime_types[x].sample_rate = sample_rate;
1731         mime_types_len++;
1732
1733         ast_rwlock_unlock(&mime_types_lock);
1734 }
1735
1736 static void add_static_payload(int map, struct ast_format *format, int rtp_code)
1737 {
1738         int x;
1739         struct ast_rtp_payload_type *type;
1740
1741         ast_assert(map < ARRAY_LEN(static_RTP_PT));
1742
1743         ast_rwlock_wrlock(&static_RTP_PT_lock);
1744         if (map < 0) {
1745                 /* find next available dynamic payload slot */
1746                 for (x = AST_RTP_PT_FIRST_DYNAMIC; x < AST_RTP_MAX_PT; ++x) {
1747                         if (!static_RTP_PT[x]) {
1748                                 map = x;
1749                                 break;
1750                         }
1751                 }
1752                 if (map < 0) {
1753                         if (format) {
1754                                 ast_log(LOG_WARNING, "No Dynamic RTP mapping available for format %s\n",
1755                                         ast_format_get_name(format));
1756                         } else {
1757                                 ast_log(LOG_WARNING, "No Dynamic RTP mapping available for RTP code %d\n",
1758                                         rtp_code);
1759                         }
1760                         ast_rwlock_unlock(&static_RTP_PT_lock);
1761                         return;
1762                 }
1763         }
1764
1765         type = ast_rtp_engine_alloc_payload_type();
1766         if (type) {
1767                 if (format) {
1768                         ao2_ref(format, +1);
1769                         type->format = format;
1770                         type->asterisk_format = 1;
1771                 } else {
1772                         type->rtp_code = rtp_code;
1773                 }
1774                 type->payload = map;
1775                 ao2_cleanup(static_RTP_PT[map]);
1776                 static_RTP_PT[map] = type;
1777         }
1778         ast_rwlock_unlock(&static_RTP_PT_lock);
1779 }
1780
1781 int ast_rtp_engine_load_format(struct ast_format *format)
1782 {
1783         char *codec_name = ast_strdupa(ast_format_get_name(format));
1784
1785         codec_name = ast_str_to_upper(codec_name);
1786
1787         set_next_mime_type(format,
1788                 0,
1789                 ast_codec_media_type2str(ast_format_get_type(format)),
1790                 codec_name,
1791                 ast_format_get_sample_rate(format));
1792         add_static_payload(-1, format, 0);
1793
1794         return 0;
1795 }
1796
1797 int ast_rtp_engine_unload_format(struct ast_format *format)
1798 {
1799         int x;
1800         int y = 0;
1801
1802         ast_rwlock_wrlock(&static_RTP_PT_lock);
1803         /* remove everything pertaining to this format id from the lists */
1804         for (x = 0; x < AST_RTP_MAX_PT; x++) {
1805                 if (static_RTP_PT[x]
1806                         && ast_format_cmp(static_RTP_PT[x]->format, format) == AST_FORMAT_CMP_EQUAL) {
1807                         ao2_ref(static_RTP_PT[x], -1);
1808                         static_RTP_PT[x] = NULL;
1809                 }
1810         }
1811         ast_rwlock_unlock(&static_RTP_PT_lock);
1812
1813         ast_rwlock_wrlock(&mime_types_lock);
1814         /* rebuild the list skipping the items matching this id */
1815         for (x = 0; x < mime_types_len; x++) {
1816                 if (ast_format_cmp(ast_rtp_mime_types[x].payload_type.format, format) == AST_FORMAT_CMP_EQUAL) {
1817                         rtp_engine_mime_type_cleanup(x);
1818                         continue;
1819                 }
1820                 if (x != y) {
1821                         ast_rtp_mime_types[y] = ast_rtp_mime_types[x];
1822                 }
1823                 y++;
1824         }
1825         mime_types_len = y;
1826         ast_rwlock_unlock(&mime_types_lock);
1827         return 0;
1828 }
1829
1830 /*!
1831  * \internal
1832  * \brief \ref stasis message payload for RTCP messages
1833  */
1834 struct rtcp_message_payload {
1835         struct ast_channel_snapshot *snapshot;  /*< The channel snapshot, if available */
1836         struct ast_rtp_rtcp_report *report;     /*< The RTCP report */
1837         struct ast_json *blob;                  /*< Extra JSON data to publish */
1838 };
1839
1840 static void rtcp_message_payload_dtor(void *obj)
1841 {
1842         struct rtcp_message_payload *payload = obj;
1843
1844         ao2_cleanup(payload->report);
1845         ao2_cleanup(payload->snapshot);
1846         ast_json_unref(payload->blob);
1847 }
1848
1849 static struct ast_manager_event_blob *rtcp_report_to_ami(struct stasis_message *msg)
1850 {
1851         struct rtcp_message_payload *payload = stasis_message_data(msg);
1852         RAII_VAR(struct ast_str *, channel_string, NULL, ast_free);
1853         RAII_VAR(struct ast_str *, packet_string, ast_str_create(512), ast_free);
1854         unsigned int ssrc = payload->report->ssrc;
1855         unsigned int type = payload->report->type;
1856         unsigned int report_count = payload->report->reception_report_count;
1857         int i;
1858
1859         if (!packet_string) {
1860                 return NULL;
1861         }
1862
1863         if (payload->snapshot) {
1864                 channel_string = ast_manager_build_channel_state_string(payload->snapshot);
1865                 if (!channel_string) {
1866                         return NULL;
1867                 }
1868         }
1869
1870         if (payload->blob) {
1871                 /* Optional data */
1872                 struct ast_json *to = ast_json_object_get(payload->blob, "to");
1873                 struct ast_json *from = ast_json_object_get(payload->blob, "from");
1874                 struct ast_json *rtt = ast_json_object_get(payload->blob, "rtt");
1875                 if (to) {
1876                         ast_str_append(&packet_string, 0, "To: %s\r\n", ast_json_string_get(to));
1877                 }
1878                 if (from) {
1879                         ast_str_append(&packet_string, 0, "From: %s\r\n", ast_json_string_get(from));
1880                 }
1881                 if (rtt) {
1882                         ast_str_append(&packet_string, 0, "RTT: %4.4f\r\n", ast_json_real_get(rtt));
1883                 }
1884         }
1885
1886         ast_str_append(&packet_string, 0, "SSRC: 0x%.8x\r\n", ssrc);
1887         ast_str_append(&packet_string, 0, "PT: %u(%s)\r\n", type, type== AST_RTP_RTCP_SR ? "SR" : "RR");
1888         ast_str_append(&packet_string, 0, "ReportCount: %u\r\n", report_count);
1889         if (type == AST_RTP_RTCP_SR) {
1890                 ast_str_append(&packet_string, 0, "SentNTP: %lu.%06lu\r\n",
1891                         (unsigned long)payload->report->sender_information.ntp_timestamp.tv_sec,
1892                         (unsigned long)payload->report->sender_information.ntp_timestamp.tv_usec * 4096);
1893                 ast_str_append(&packet_string, 0, "SentRTP: %u\r\n",
1894                                 payload->report->sender_information.rtp_timestamp);
1895                 ast_str_append(&packet_string, 0, "SentPackets: %u\r\n",
1896                                 payload->report->sender_information.packet_count);
1897                 ast_str_append(&packet_string, 0, "SentOctets: %u\r\n",
1898                                 payload->report->sender_information.octet_count);
1899         }
1900
1901         for (i = 0; i < report_count; i++) {
1902                 RAII_VAR(struct ast_str *, report_string, NULL, ast_free);
1903
1904                 if (!payload->report->report_block[i]) {
1905                         break;
1906                 }
1907
1908                 report_string = ast_str_create(256);
1909                 if (!report_string) {
1910                         return NULL;
1911                 }
1912
1913                 ast_str_append(&report_string, 0, "Report%dSourceSSRC: 0x%.8x\r\n",
1914                                 i, payload->report->report_block[i]->source_ssrc);
1915                 ast_str_append(&report_string, 0, "Report%dFractionLost: %d\r\n",
1916                                 i, payload->report->report_block[i]->lost_count.fraction);
1917                 ast_str_append(&report_string, 0, "Report%dCumulativeLost: %u\r\n",
1918                                 i, payload->report->report_block[i]->lost_count.packets);
1919                 ast_str_append(&report_string, 0, "Report%dHighestSequence: %u\r\n",
1920                                 i, payload->report->report_block[i]->highest_seq_no & 0xffff);
1921                 ast_str_append(&report_string, 0, "Report%dSequenceNumberCycles: %u\r\n",
1922                                 i, payload->report->report_block[i]->highest_seq_no >> 16);
1923                 ast_str_append(&report_string, 0, "Report%dIAJitter: %u\r\n",
1924                                 i, payload->report->report_block[i]->ia_jitter);
1925                 ast_str_append(&report_string, 0, "Report%dLSR: %u\r\n",
1926                                 i, payload->report->report_block[i]->lsr);
1927                 ast_str_append(&report_string, 0, "Report%dDLSR: %4.4f\r\n",
1928                                 i, ((double)payload->report->report_block[i]->dlsr) / 65536);
1929                 ast_str_append(&packet_string, 0, "%s", ast_str_buffer(report_string));
1930         }
1931
1932         return ast_manager_event_blob_create(EVENT_FLAG_REPORTING,
1933                 stasis_message_type(msg) == ast_rtp_rtcp_received_type() ? "RTCPReceived" : "RTCPSent",
1934                 "%s%s",
1935                 AS_OR(channel_string, ""),
1936                 ast_str_buffer(packet_string));
1937 }
1938
1939 static struct ast_json *rtcp_report_to_json(struct stasis_message *msg,
1940         const struct stasis_message_sanitizer *sanitize)
1941 {
1942         struct rtcp_message_payload *payload = stasis_message_data(msg);
1943         RAII_VAR(struct ast_json *, json_rtcp_report, NULL, ast_json_unref);
1944         RAII_VAR(struct ast_json *, json_rtcp_report_blocks, NULL, ast_json_unref);
1945         RAII_VAR(struct ast_json *, json_rtcp_sender_info, NULL, ast_json_unref);
1946         RAII_VAR(struct ast_json *, json_channel, NULL, ast_json_unref);
1947         int i;
1948
1949         json_rtcp_report_blocks = ast_json_array_create();
1950         if (!json_rtcp_report_blocks) {
1951                 return NULL;
1952         }
1953
1954         for (i = 0; i < payload->report->reception_report_count && payload->report->report_block[i]; i++) {
1955                 struct ast_json *json_report_block;
1956                 char str_lsr[32];
1957                 snprintf(str_lsr, sizeof(str_lsr), "%u", payload->report->report_block[i]->lsr);
1958                 json_report_block = ast_json_pack("{s: i, s: i, s: i, s: i, s: i, s: s, s: i}",
1959                                 "source_ssrc", payload->report->report_block[i]->source_ssrc,
1960                                 "fraction_lost", payload->report->report_block[i]->lost_count.fraction,
1961                                 "packets_lost", payload->report->report_block[i]->lost_count.packets,
1962                                 "highest_seq_no", payload->report->report_block[i]->highest_seq_no,
1963                                 "ia_jitter", payload->report->report_block[i]->ia_jitter,
1964                                 "lsr", str_lsr,
1965                                 "dlsr", payload->report->report_block[i]->dlsr);
1966                 if (!json_report_block) {
1967                         return NULL;
1968                 }
1969
1970                 if (ast_json_array_append(json_rtcp_report_blocks, json_report_block)) {
1971                         return NULL;
1972                 }
1973         }
1974
1975         if (payload->report->type == AST_RTP_RTCP_SR) {
1976                 char sec[32];
1977                 char usec[32];
1978                 snprintf(sec, sizeof(sec), "%lu", (unsigned long)payload->report->sender_information.ntp_timestamp.tv_sec);
1979                 snprintf(usec, sizeof(usec), "%lu", (unsigned long)payload->report->sender_information.ntp_timestamp.tv_usec);
1980                 json_rtcp_sender_info = ast_json_pack("{s: s, s: s, s: i, s: i, s: i}",
1981                                 "ntp_timestamp_sec", sec,
1982                                 "ntp_timestamp_usec", usec,
1983                                 "rtp_timestamp", payload->report->sender_information.rtp_timestamp,
1984                                 "packets", payload->report->sender_information.packet_count,
1985                                 "octets", payload->report->sender_information.octet_count);
1986                 if (!json_rtcp_sender_info) {
1987                         return NULL;
1988                 }
1989         }
1990
1991         json_rtcp_report = ast_json_pack("{s: i, s: i, s: i, s: O, s: O}",
1992                         "ssrc", payload->report->ssrc,
1993                         "type", payload->report->type,
1994                         "report_count", payload->report->reception_report_count,
1995                         "sender_information", json_rtcp_sender_info ? json_rtcp_sender_info : ast_json_null(),
1996                         "report_blocks", json_rtcp_report_blocks);
1997         if (!json_rtcp_report) {
1998                 return NULL;
1999         }
2000
2001         if (payload->snapshot) {
2002                 json_channel = ast_channel_snapshot_to_json(payload->snapshot, sanitize);
2003                 if (!json_channel) {
2004                         return NULL;
2005                 }
2006         }
2007
2008         return ast_json_pack("{s: O, s: O, s: O}",
2009                 "channel", payload->snapshot ? json_channel : ast_json_null(),
2010                 "rtcp_report", json_rtcp_report,
2011                 "blob", payload->blob);
2012 }
2013
2014 static void rtp_rtcp_report_dtor(void *obj)
2015 {
2016         int i;
2017         struct ast_rtp_rtcp_report *rtcp_report = obj;
2018
2019         for (i = 0; i < rtcp_report->reception_report_count; i++) {
2020                 ast_free(rtcp_report->report_block[i]);
2021         }
2022 }
2023
2024 struct ast_rtp_rtcp_report *ast_rtp_rtcp_report_alloc(unsigned int report_blocks)
2025 {
2026         struct ast_rtp_rtcp_report *rtcp_report;
2027
2028         /* Size of object is sizeof the report + the number of report_blocks * sizeof pointer */
2029         rtcp_report = ao2_alloc((sizeof(*rtcp_report) + report_blocks * sizeof(struct ast_rtp_rtcp_report_block *)),
2030                 rtp_rtcp_report_dtor);
2031
2032         return rtcp_report;
2033 }
2034
2035 void ast_rtp_publish_rtcp_message(struct ast_rtp_instance *rtp,
2036                 struct stasis_message_type *message_type,
2037                 struct ast_rtp_rtcp_report *report,
2038                 struct ast_json *blob)
2039 {
2040         RAII_VAR(struct rtcp_message_payload *, payload, NULL, ao2_cleanup);
2041         RAII_VAR(struct stasis_message *, message, NULL, ao2_cleanup);
2042
2043         if (!message_type) {
2044                 return;
2045         }
2046
2047         payload = ao2_alloc(sizeof(*payload), rtcp_message_payload_dtor);
2048         if (!payload || !report) {
2049                 return;
2050         }
2051
2052         if (!ast_strlen_zero(rtp->channel_uniqueid)) {
2053                 payload->snapshot = ast_channel_snapshot_get_latest(rtp->channel_uniqueid);
2054         }
2055         if (blob) {
2056                 payload->blob = blob;
2057                 ast_json_ref(blob);
2058         }
2059         ao2_ref(report, +1);
2060         payload->report = report;
2061
2062         message = stasis_message_create(message_type, payload);
2063         if (!message) {
2064                 return;
2065         }
2066
2067         stasis_publish(ast_rtp_topic(), message);
2068 }
2069
2070 /*!
2071  * @{ \brief Define RTCP/RTP message types.
2072  */
2073 STASIS_MESSAGE_TYPE_DEFN(ast_rtp_rtcp_sent_type,
2074                 .to_ami = rtcp_report_to_ami,
2075                 .to_json = rtcp_report_to_json,);
2076 STASIS_MESSAGE_TYPE_DEFN(ast_rtp_rtcp_received_type,
2077                 .to_ami = rtcp_report_to_ami,
2078                 .to_json = rtcp_report_to_json,);
2079 /*! @} */
2080
2081 struct stasis_topic *ast_rtp_topic(void)
2082 {
2083         return rtp_topic;
2084 }
2085
2086 static void rtp_engine_shutdown(void)
2087 {
2088         int x;
2089
2090         ao2_cleanup(rtp_topic);
2091         rtp_topic = NULL;
2092         STASIS_MESSAGE_TYPE_CLEANUP(ast_rtp_rtcp_received_type);
2093         STASIS_MESSAGE_TYPE_CLEANUP(ast_rtp_rtcp_sent_type);
2094
2095         ast_rwlock_wrlock(&static_RTP_PT_lock);
2096         for (x = 0; x < AST_RTP_MAX_PT; x++) {
2097                 ao2_cleanup(static_RTP_PT[x]);
2098                 static_RTP_PT[x] = NULL;
2099         }
2100         ast_rwlock_unlock(&static_RTP_PT_lock);
2101
2102         ast_rwlock_wrlock(&mime_types_lock);
2103         for (x = 0; x < mime_types_len; x++) {
2104                 if (ast_rtp_mime_types[x].payload_type.format) {
2105                         rtp_engine_mime_type_cleanup(x);
2106                 }
2107         }
2108         mime_types_len = 0;
2109         ast_rwlock_unlock(&mime_types_lock);
2110 }
2111
2112 int ast_rtp_engine_init(void)
2113 {
2114         ast_rwlock_init(&mime_types_lock);
2115         ast_rwlock_init(&static_RTP_PT_lock);
2116
2117         rtp_topic = stasis_topic_create("rtp_topic");
2118         if (!rtp_topic) {
2119                 return -1;
2120         }
2121         STASIS_MESSAGE_TYPE_INIT(ast_rtp_rtcp_sent_type);
2122         STASIS_MESSAGE_TYPE_INIT(ast_rtp_rtcp_received_type);
2123         ast_register_cleanup(rtp_engine_shutdown);
2124
2125         /* Define all the RTP mime types available */
2126         set_next_mime_type(ast_format_g723, 0, "audio", "G723", 8000);
2127         set_next_mime_type(ast_format_gsm, 0, "audio", "GSM", 8000);
2128         set_next_mime_type(ast_format_ulaw, 0, "audio", "PCMU", 8000);
2129         set_next_mime_type(ast_format_ulaw, 0, "audio", "G711U", 8000);
2130         set_next_mime_type(ast_format_alaw, 0, "audio", "PCMA", 8000);
2131         set_next_mime_type(ast_format_alaw, 0, "audio", "G711A", 8000);
2132         set_next_mime_type(ast_format_g726, 0, "audio", "G726-32", 8000);
2133         set_next_mime_type(ast_format_adpcm, 0, "audio", "DVI4", 8000);
2134         set_next_mime_type(ast_format_slin, 0, "audio", "L16", 8000);
2135         set_next_mime_type(ast_format_slin16, 0, "audio", "L16", 16000);
2136         set_next_mime_type(ast_format_slin16, 0, "audio", "L16-256", 16000);
2137         set_next_mime_type(ast_format_slin12, 0, "audio", "L16", 12000);
2138         set_next_mime_type(ast_format_slin24, 0, "audio", "L16", 24000);
2139         set_next_mime_type(ast_format_slin32, 0, "audio", "L16", 32000);
2140         set_next_mime_type(ast_format_slin44, 0, "audio", "L16", 44000);
2141         set_next_mime_type(ast_format_slin48, 0, "audio", "L16", 48000);
2142         set_next_mime_type(ast_format_slin96, 0, "audio", "L16", 96000);
2143         set_next_mime_type(ast_format_slin192, 0, "audio", "L16", 192000);
2144         set_next_mime_type(ast_format_lpc10, 0, "audio", "LPC", 8000);
2145         set_next_mime_type(ast_format_g729, 0, "audio", "G729", 8000);
2146         set_next_mime_type(ast_format_g729, 0, "audio", "G729A", 8000);
2147         set_next_mime_type(ast_format_g729, 0, "audio", "G.729", 8000);
2148         set_next_mime_type(ast_format_speex, 0, "audio", "speex", 8000);
2149         set_next_mime_type(ast_format_speex16, 0,  "audio", "speex", 16000);
2150         set_next_mime_type(ast_format_speex32, 0,  "audio", "speex", 32000);
2151         set_next_mime_type(ast_format_ilbc, 0, "audio", "iLBC", 8000);
2152         /* this is the sample rate listed in the RTP profile for the G.722 codec, *NOT* the actual sample rate of the media stream */
2153         set_next_mime_type(ast_format_g722, 0, "audio", "G722", 8000);
2154         set_next_mime_type(ast_format_g726_aal2, 0, "audio", "AAL2-G726-32", 8000);
2155         set_next_mime_type(NULL, AST_RTP_DTMF, "audio", "telephone-event", 8000);
2156         set_next_mime_type(NULL, AST_RTP_CISCO_DTMF, "audio", "cisco-telephone-event", 8000);
2157         set_next_mime_type(NULL, AST_RTP_CN, "audio", "CN", 8000);
2158         set_next_mime_type(ast_format_jpeg, 0, "video", "JPEG", 90000);
2159         set_next_mime_type(ast_format_png, 0, "video", "PNG", 90000);
2160         set_next_mime_type(ast_format_h261, 0, "video", "H261", 90000);
2161         set_next_mime_type(ast_format_h263, 0, "video", "H263", 90000);
2162         set_next_mime_type(ast_format_h263p, 0, "video", "h263-1998", 90000);
2163         set_next_mime_type(ast_format_h264, 0, "video", "H264", 90000);
2164         set_next_mime_type(ast_format_mp4, 0, "video", "MP4V-ES", 90000);
2165         set_next_mime_type(ast_format_t140_red, 0, "text", "RED", 1000);
2166         set_next_mime_type(ast_format_t140, 0, "text", "T140", 1000);
2167         set_next_mime_type(ast_format_siren7, 0, "audio", "G7221", 16000);
2168         set_next_mime_type(ast_format_siren14, 0, "audio", "G7221", 32000);
2169         set_next_mime_type(ast_format_g719, 0, "audio", "G719", 48000);
2170         /* Opus and VP8 */
2171         set_next_mime_type(ast_format_opus, 0,  "audio", "opus", 48000);
2172         set_next_mime_type(ast_format_vp8, 0,  "video", "VP8", 90000);
2173
2174         /* Define the static rtp payload mappings */
2175         add_static_payload(0, ast_format_ulaw, 0);
2176         #ifdef USE_DEPRECATED_G726
2177         add_static_payload(2, ast_format_g726, 0);/* Technically this is G.721, but if Cisco can do it, so can we... */
2178         #endif
2179         add_static_payload(3, ast_format_gsm, 0);
2180         add_static_payload(4, ast_format_g723, 0);
2181         add_static_payload(5, ast_format_adpcm, 0);/* 8 kHz */
2182         add_static_payload(6, ast_format_adpcm, 0); /* 16 kHz */
2183         add_static_payload(7, ast_format_lpc10, 0);
2184         add_static_payload(8, ast_format_alaw, 0);
2185         add_static_payload(9, ast_format_g722, 0);
2186         add_static_payload(10, ast_format_slin, 0); /* 2 channels */
2187         add_static_payload(11, ast_format_slin, 0); /* 1 channel */
2188         add_static_payload(13, NULL, AST_RTP_CN);
2189         add_static_payload(16, ast_format_adpcm, 0); /* 11.025 kHz */
2190         add_static_payload(17, ast_format_adpcm, 0); /* 22.050 kHz */
2191         add_static_payload(18, ast_format_g729, 0);
2192         add_static_payload(19, NULL, AST_RTP_CN);         /* Also used for CN */
2193         add_static_payload(26, ast_format_jpeg, 0);
2194         add_static_payload(31, ast_format_h261, 0);
2195         add_static_payload(34, ast_format_h263, 0);
2196         add_static_payload(97, ast_format_ilbc, 0);
2197         add_static_payload(98, ast_format_h263p, 0);
2198         add_static_payload(99, ast_format_h264, 0);
2199         add_static_payload(101, NULL, AST_RTP_DTMF);
2200         add_static_payload(102, ast_format_siren7, 0);
2201         add_static_payload(103, ast_format_h263p, 0);
2202         add_static_payload(104, ast_format_mp4, 0);
2203         add_static_payload(105, ast_format_t140_red, 0);   /* Real time text chat (with redundancy encoding) */
2204         add_static_payload(106, ast_format_t140, 0);     /* Real time text chat */
2205         add_static_payload(110, ast_format_speex, 0);
2206         add_static_payload(111, ast_format_g726, 0);
2207         add_static_payload(112, ast_format_g726_aal2, 0);
2208         add_static_payload(115, ast_format_siren14, 0);
2209         add_static_payload(116, ast_format_g719, 0);
2210         add_static_payload(117, ast_format_speex16, 0);
2211         add_static_payload(118, ast_format_slin16, 0); /* 16 Khz signed linear */
2212         add_static_payload(119, ast_format_speex32, 0);
2213         add_static_payload(121, NULL, AST_RTP_CISCO_DTMF);   /* Must be type 121 */
2214         add_static_payload(122, ast_format_slin12, 0);
2215         add_static_payload(123, ast_format_slin24, 0);
2216         add_static_payload(124, ast_format_slin32, 0);
2217         add_static_payload(125, ast_format_slin44, 0);
2218         add_static_payload(126, ast_format_slin48, 0);
2219         add_static_payload(127, ast_format_slin96, 0);
2220         /* payload types above 127 are not valid */
2221         add_static_payload(96, ast_format_slin192, 0);
2222         /* Opus and VP8 */
2223         add_static_payload(100, ast_format_vp8, 0);
2224         add_static_payload(107, ast_format_opus, 0);
2225
2226         return 0;
2227 }
2228
2229 time_t ast_rtp_instance_get_last_tx(const struct ast_rtp_instance *rtp)
2230 {
2231         return rtp->last_tx;
2232 }
2233
2234 void ast_rtp_instance_set_last_tx(struct ast_rtp_instance *rtp, time_t time)
2235 {
2236         rtp->last_tx = time;
2237 }
2238
2239 time_t ast_rtp_instance_get_last_rx(const struct ast_rtp_instance *rtp)
2240 {
2241         return rtp->last_rx;
2242 }
2243
2244 void ast_rtp_instance_set_last_rx(struct ast_rtp_instance *rtp, time_t time)
2245 {
2246         rtp->last_rx = time;
2247 }