FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/sdp.c
Date: 2026-09-27 02:02:56
Exec Total Coverage
Lines: 44 545 8.1%
Functions: 4 14 28.6%
Branches: 15 314 4.8%
Line Branch Exec Source
1 /*
2 * copyright (c) 2007 Luca Abeni
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "config_components.h"
22
23 #include <string.h>
24 #include "libavutil/avstring.h"
25 #include "libavutil/base64.h"
26 #include "libavutil/dict.h"
27 #include "libavutil/mem.h"
28 #include "libavutil/parseutils.h"
29 #include "libavutil/opt.h"
30 #include "libavcodec/xiph.h"
31 #include "libavcodec/mpeg4audio.h"
32 #include "avformat.h"
33 #include "internal.h"
34 #include "av1.h"
35 #include "avc.h"
36 #include "hevc.h"
37 #include "nal.h"
38 #include "rtp.h"
39 #include "version.h"
40 #if CONFIG_NETWORK
41 #include "network.h"
42 #endif
43
44 #if CONFIG_RTP_MUXER
45 #define MAX_EXTRADATA_SIZE ((INT_MAX - 10) / 2)
46
47 struct sdp_session_level {
48 int sdp_version; /**< protocol version (currently 0) */
49 int id; /**< session ID */
50 int version; /**< session version */
51 int start_time; /**< session start time (NTP time, in seconds),
52 or 0 in case of permanent session */
53 int end_time; /**< session end time (NTP time, in seconds),
54 or 0 if the session is not bounded */
55 int ttl; /**< TTL, in case of multicast stream */
56 const char *user; /**< username of the session's creator */
57 const char *src_addr; /**< IP address of the machine from which the session was created */
58 const char *src_type; /**< address type of src_addr */
59 const char *dst_addr; /**< destination IP address (can be multicast) */
60 const char *dst_type; /**< destination IP address type */
61 const char *name; /**< session name (can be an empty string) */
62 };
63
64 2 static void sdp_write_address(char *buff, int size, const char *dest_addr,
65 const char *dest_type, int ttl)
66 {
67
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 2 if (dest_addr) {
68 ✗ if (!dest_type)
69 ✗ dest_type = "IP4";
70 ✗ if (ttl > 0 && !strcmp(dest_type, "IP4")) {
71 /* The TTL should only be specified for IPv4 multicast addresses,
72 * not for IPv6. */
73 ✗ av_strlcatf(buff, size, "c=IN %s %s/%d\r\n", dest_type, dest_addr, ttl);
74 } else {
75 ✗ av_strlcatf(buff, size, "c=IN %s %s\r\n", dest_type, dest_addr);
76 }
77 }
78 2 }
79
80 ✗ static void sdp_write_header(char *buff, int size, struct sdp_session_level *s)
81 {
82 ✗ av_strlcatf(buff, size, "v=%d\r\n"
83 "o=- %d %d IN %s %s\r\n"
84 "s=%s\r\n",
85 s->sdp_version,
86 s->id, s->version, s->src_type, s->src_addr,
87 s->name);
88 ✗ sdp_write_address(buff, size, s->dst_addr, s->dst_type, s->ttl);
89 ✗ av_strlcatf(buff, size, "t=%d %d\r\n"
90 "a=tool:libavformat " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\r\n",
91 s->start_time, s->end_time);
92 ✗ }
93
94 #if CONFIG_NETWORK
95 ✗ static int resolve_destination(char *dest_addr, int size, char *type,
96 int type_size)
97 {
98 ✗ struct addrinfo hints = { 0 }, *ai;
99 int is_multicast;
100
101 ✗ av_strlcpy(type, "IP4", type_size);
102 ✗ if (!dest_addr[0])
103 ✗ return 0;
104
105 /* Resolve the destination, since it must be written
106 * as a numeric IP address in the SDP. */
107
108 ✗ if (getaddrinfo(dest_addr, NULL, &hints, &ai))
109 ✗ return 0;
110 ✗ getnameinfo(ai->ai_addr, ai->ai_addrlen, dest_addr, size,
111 NULL, 0, NI_NUMERICHOST);
112 #ifdef AF_INET6
113 ✗ if (ai->ai_family == AF_INET6)
114 ✗ av_strlcpy(type, "IP6", type_size);
115 #endif
116 ✗ is_multicast = ff_is_multicast_address(ai->ai_addr);
117 ✗ freeaddrinfo(ai);
118 ✗ return is_multicast;
119 }
120 #else
121 static int resolve_destination(char *dest_addr, int size, char *type,
122 int type_size)
123 {
124 return 0;
125 }
126 #endif
127
128 ✗ static int sdp_get_address(char *dest_addr, int size, int *ttl, const char *url)
129 {
130 int port;
131 const char *p;
132 char proto[32];
133
134 ✗ av_url_split(proto, sizeof(proto), NULL, 0, dest_addr, size, &port, NULL, 0, url);
135
136 ✗ *ttl = 0;
137
138 ✗ if (strcmp(proto, "rtp") && strcmp(proto, "srtp")) {
139 /* The url isn't for the actual rtp sessions,
140 * don't parse out anything else than the destination.
141 */
142 ✗ return 0;
143 }
144
145 ✗ p = strchr(url, '?');
146 ✗ if (p) {
147 char buff[64];
148
149 ✗ if (av_find_info_tag(buff, sizeof(buff), "ttl", p)) {
150 ✗ *ttl = strtol(buff, NULL, 10);
151 } else {
152 ✗ *ttl = 5;
153 }
154 }
155
156 ✗ return port;
157 }
158
159 ✗ static int extradata2psets_av1(AVFormatContext *s, const AVCodecParameters *par,
160 char **out)
161 {
162 char *psets;
163 AV1SequenceParameters seq;
164
165 ✗ if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
166 ✗ return AVERROR_INVALIDDATA;
167
168 ✗ psets = av_mallocz(64);
169 ✗ if (!psets) {
170 ✗ av_log(s, AV_LOG_ERROR, "Cannot allocate memory for the parameter sets.\n");
171 ✗ return AVERROR(ENOMEM);
172 }
173 ✗ av_strlcatf(psets, 64, "profile=%u;level-idx=%u;tier=%u",
174 ✗ seq.profile, seq.level, seq.tier);
175 ✗ *out = psets;
176 ✗ return 0;
177 }
178
179 #define MAX_PSET_SIZE 1024
180 ✗ static int extradata2psets(AVFormatContext *s, const AVCodecParameters *par,
181 char **out)
182 {
183 char *psets, *p;
184 const uint8_t *r;
185 static const char pset_string[] = "; sprop-parameter-sets=";
186 static const char profile_string[] = "; profile-level-id=";
187 ✗ uint8_t *extradata = par->extradata;
188 ✗ int extradata_size = par->extradata_size;
189 ✗ uint8_t *tmpbuf = NULL;
190 ✗ const uint8_t *sps = NULL, *sps_end;
191
192 ✗ *out = NULL;
193
194 ✗ if (par->extradata_size > MAX_EXTRADATA_SIZE) {
195 ✗ av_log(s, AV_LOG_ERROR, "Too much extradata!\n");
196 ✗ return AVERROR_INVALIDDATA;
197 }
198 ✗ if (par->extradata[0] == 1) {
199 ✗ int ret = ff_avc_write_annexb_extradata(par->extradata, &extradata,
200 &extradata_size);
201 ✗ if (ret < 0)
202 ✗ return ret;
203
204 ✗ tmpbuf = extradata;
205 }
206
207 ✗ psets = av_mallocz(MAX_PSET_SIZE);
208 ✗ if (!psets) {
209 ✗ av_log(s, AV_LOG_ERROR, "Cannot allocate memory for the parameter sets.\n");
210 ✗ av_free(tmpbuf);
211 ✗ return AVERROR(ENOMEM);
212 }
213 ✗ memcpy(psets, pset_string, strlen(pset_string));
214 ✗ p = psets + strlen(pset_string);
215 ✗ r = ff_nal_find_startcode(extradata, extradata + extradata_size);
216 ✗ while (r < extradata + extradata_size) {
217 const uint8_t *r1;
218 uint8_t nal_type;
219
220 ✗ while (!*(r++));
221 ✗ nal_type = *r & 0x1f;
222 ✗ r1 = ff_nal_find_startcode(r, extradata + extradata_size);
223 ✗ if (nal_type != 7 && nal_type != 8) { /* Only output SPS and PPS */
224 ✗ r = r1;
225 ✗ continue;
226 }
227 ✗ if (p != (psets + strlen(pset_string))) {
228 ✗ if (p - psets >= MAX_PSET_SIZE)
229 ✗ goto fail_in_loop;
230 ✗ *p = ',';
231 ✗ p++;
232 }
233 ✗ if (!sps) {
234 ✗ sps = r;
235 ✗ sps_end = r1;
236 }
237 ✗ if (!av_base64_encode(p, MAX_PSET_SIZE - (p - psets), r, r1 - r)) {
238 ✗ av_log(s, AV_LOG_ERROR, "Cannot Base64-encode %td %td!\n",
239 ✗ MAX_PSET_SIZE - (p - psets), r1 - r);
240 ✗ fail_in_loop:
241 ✗ av_free(psets);
242 ✗ av_free(tmpbuf);
243
244 ✗ return AVERROR_INVALIDDATA;
245 }
246 ✗ p += strlen(p);
247 ✗ r = r1;
248 }
249 ✗ if (sps && sps_end - sps >= 4 && p - psets <= MAX_PSET_SIZE - strlen(profile_string) - 7) {
250 ✗ memcpy(p, profile_string, strlen(profile_string));
251 ✗ p += strlen(p);
252 ✗ ff_data_to_hex(p, sps + 1, 3, 0);
253 }
254 ✗ av_free(tmpbuf);
255
256 ✗ *out = psets;
257 ✗ return 0;
258 }
259
260 ✗ static int extradata2psets_hevc(AVFormatContext *fmt, const AVCodecParameters *par,
261 char **out)
262 {
263 char *psets;
264 ✗ uint8_t *extradata = par->extradata;
265 ✗ int extradata_size = par->extradata_size;
266 ✗ uint8_t *tmpbuf = NULL;
267 ✗ int ps_pos[3] = { 0 };
268 static const char * const ps_names[3] = { "vps", "sps", "pps" };
269 int num_arrays, num_nalus;
270 ✗ int pos, i, j, ret = 0;
271
272 ✗ *out = NULL;
273
274 // Convert to hvcc format. Since we need to group multiple NALUs of
275 // the same type, and we might need to convert from one format to the
276 // other anyway, we get away with a little less work by using the hvcc
277 // format.
278 ✗ if (par->extradata[0] != 1) {
279 AVIOContext *pb;
280
281 ✗ ret = avio_open_dyn_buf(&pb);
282 ✗ if (ret < 0)
283 ✗ return ret;
284
285 ✗ ret = ff_isom_write_hvcc(pb, par->extradata, par->extradata_size, 0, fmt);
286 ✗ if (ret < 0) {
287 ✗ avio_close_dyn_buf(pb, &tmpbuf);
288 ✗ goto err;
289 }
290 ✗ extradata_size = avio_close_dyn_buf(pb, &extradata);
291 ✗ tmpbuf = extradata;
292 }
293
294 ✗ if (extradata_size < 23)
295 ✗ goto err;
296
297 ✗ num_arrays = extradata[22];
298 ✗ pos = 23;
299 ✗ for (i = 0; i < num_arrays; i++) {
300 int num_nalus, nalu_type;
301 ✗ if (pos + 3 > extradata_size)
302 ✗ goto err;
303 ✗ nalu_type = extradata[pos] & 0x3f;
304 // Not including libavcodec/hevc.h to avoid confusion between
305 // NAL_* with the same name for both H.264 and HEVC.
306 ✗ if (nalu_type == 32) // VPS
307 ✗ ps_pos[0] = pos;
308 ✗ else if (nalu_type == 33) // SPS
309 ✗ ps_pos[1] = pos;
310 ✗ else if (nalu_type == 34) // PPS
311 ✗ ps_pos[2] = pos;
312 ✗ num_nalus = AV_RB16(&extradata[pos + 1]);
313 ✗ pos += 3;
314 ✗ for (j = 0; j < num_nalus; j++) {
315 int len;
316 ✗ if (pos + 2 > extradata_size)
317 ✗ goto err;
318 ✗ len = AV_RB16(&extradata[pos]);
319 ✗ pos += 2;
320 ✗ if (pos + len > extradata_size)
321 ✗ goto err;
322 ✗ pos += len;
323 }
324 }
325 ✗ if (!ps_pos[0] || !ps_pos[1] || !ps_pos[2])
326 ✗ goto err;
327
328 ✗ psets = av_mallocz(MAX_PSET_SIZE);
329 ✗ if (!psets) {
330 ✗ ret = AVERROR(ENOMEM);
331 ✗ goto err;
332 }
333
334 ✗ psets[0] = '\0';
335
336 ✗ for (i = 0; i < 3; i++) {
337 ✗ pos = ps_pos[i];
338
339 ✗ if (i > 0)
340 ✗ av_strlcat(psets, "; ", MAX_PSET_SIZE);
341 ✗ av_strlcatf(psets, MAX_PSET_SIZE, "sprop-%s=", ps_names[i]);
342
343 // Skipping boundary checks in the input here; we've already traversed
344 // the whole hvcc structure above without issues
345 ✗ num_nalus = AV_RB16(&extradata[pos + 1]);
346 ✗ pos += 3;
347 ✗ for (j = 0; j < num_nalus; j++) {
348 ✗ int len = AV_RB16(&extradata[pos]);
349 int strpos;
350 ✗ pos += 2;
351 ✗ if (j > 0)
352 ✗ av_strlcat(psets, ",", MAX_PSET_SIZE);
353 ✗ strpos = strlen(psets);
354 ✗ if (!av_base64_encode(psets + strpos, MAX_PSET_SIZE - strpos,
355 ✗ &extradata[pos], len)) {
356 ✗ av_free(psets);
357 ✗ goto err;
358 }
359 ✗ pos += len;
360 }
361 }
362 ✗ av_free(tmpbuf);
363
364 ✗ *out = psets;
365 ✗ return 0;
366 ✗ err:
367 ✗ if (ret >= 0)
368 ✗ ret = AVERROR_INVALIDDATA;
369 ✗ av_free(tmpbuf);
370 ✗ return ret;
371 }
372
373 1 static int extradata2config(AVFormatContext *s, const AVCodecParameters *par,
374 char **out)
375 {
376 char *config;
377
378 1 *out = NULL;
379
380
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 1 if (par->extradata_size > MAX_EXTRADATA_SIZE) {
381 ✗ av_log(s, AV_LOG_ERROR, "Too much extradata!\n");
382 ✗ return AVERROR_INVALIDDATA;
383 }
384 1 config = av_malloc(10 + par->extradata_size * 2);
385
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 1 if (!config) {
386 ✗ av_log(s, AV_LOG_ERROR, "Cannot allocate memory for the config info.\n");
387 ✗ return AVERROR(ENOMEM);
388 }
389 1 memcpy(config, "; config=", 9);
390 1 ff_data_to_hex(config + 9, par->extradata, par->extradata_size, 0);
391
392 1 *out = config;
393 1 return 0;
394 }
395
396 ✗ static int xiph_extradata2config(AVFormatContext *s, const AVCodecParameters *par,
397 char **out)
398 {
399 uint8_t *config;
400 char *encoded_config;
401 const uint8_t *header_start[3];
402 int headers_len, header_len[3], config_len;
403 int first_header_size, ret;
404
405 ✗ *out = NULL;
406
407 ✗ switch (par->codec_id) {
408 ✗ case AV_CODEC_ID_THEORA:
409 ✗ first_header_size = 42;
410 ✗ break;
411 ✗ case AV_CODEC_ID_VORBIS:
412 ✗ first_header_size = 30;
413 ✗ break;
414 ✗ default:
415 ✗ av_log(s, AV_LOG_ERROR, "Unsupported Xiph codec ID\n");
416 ✗ return AVERROR(ENOSYS);
417 }
418
419 ✗ ret = avpriv_split_xiph_headers(par->extradata, par->extradata_size,
420 first_header_size, header_start,
421 header_len);
422 ✗ if (ret < 0) {
423 ✗ av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
424 ✗ return ret;
425 }
426
427 ✗ headers_len = header_len[0] + header_len[2];
428 ✗ config_len = 4 + // count
429 3 + // ident
430 2 + // packet size
431 1 + // header count
432 2 + // header size
433 headers_len; // and the rest
434
435 ✗ config = av_malloc(config_len);
436 ✗ if (!config)
437 ✗ goto xiph_fail;
438
439 ✗ encoded_config = av_malloc(AV_BASE64_SIZE(config_len));
440 ✗ if (!encoded_config) {
441 ✗ av_free(config);
442 ✗ goto xiph_fail;
443 }
444
445 ✗ config[0] = config[1] = config[2] = 0;
446 ✗ config[3] = 1;
447 ✗ config[4] = (RTP_XIPH_IDENT >> 16) & 0xff;
448 ✗ config[5] = (RTP_XIPH_IDENT >> 8) & 0xff;
449 ✗ config[6] = (RTP_XIPH_IDENT ) & 0xff;
450 ✗ config[7] = (headers_len >> 8) & 0xff;
451 ✗ config[8] = headers_len & 0xff;
452 ✗ config[9] = 2;
453 ✗ config[10] = header_len[0];
454 ✗ config[11] = 0; // size of comment header; nonexistent
455 ✗ memcpy(config + 12, header_start[0], header_len[0]);
456 ✗ memcpy(config + 12 + header_len[0], header_start[2], header_len[2]);
457
458 ✗ av_base64_encode(encoded_config, AV_BASE64_SIZE(config_len),
459 config, config_len);
460 ✗ av_free(config);
461
462 ✗ *out = encoded_config;
463 ✗ return 0;
464
465 ✗ xiph_fail:
466 ✗ av_log(s, AV_LOG_ERROR,
467 "Not enough memory for configuration string\n");
468 ✗ return AVERROR(ENOMEM);
469 }
470
471 ✗ static int latm_context2profilelevel(const AVCodecParameters *par)
472 {
473 /* MP4A-LATM
474 * The RTP payload format specification is described in RFC 3016
475 * The encoding specifications are provided in ISO/IEC 14496-3 */
476
477 ✗ int profile_level = 0x2B;
478
479 /* TODO: AAC Profile only supports AAC LC Object Type.
480 * Different Object Types should implement different Profile Levels */
481
482 ✗ if (par->sample_rate <= 24000) {
483 ✗ if (par->ch_layout.nb_channels <= 2)
484 ✗ profile_level = 0x28; // AAC Profile, Level 1
485 ✗ } else if (par->sample_rate <= 48000) {
486 ✗ if (par->ch_layout.nb_channels <= 2) {
487 ✗ profile_level = 0x29; // AAC Profile, Level 2
488 ✗ } else if (par->ch_layout.nb_channels <= 5) {
489 ✗ profile_level = 0x2A; // AAC Profile, Level 4
490 }
491 ✗ } else if (par->sample_rate <= 96000) {
492 ✗ if (par->ch_layout.nb_channels <= 5) {
493 ✗ profile_level = 0x2B; // AAC Profile, Level 5
494 }
495 }
496
497 ✗ return profile_level;
498 }
499
500 ✗ static int latm_context2config(AVFormatContext *s, const AVCodecParameters *par,
501 char **out)
502 {
503 /* MP4A-LATM
504 * The RTP payload format specification is described in RFC 3016
505 * The encoding specifications are provided in ISO/IEC 14496-3 */
506
507 uint8_t config_byte[6];
508 int rate_index;
509 char *config;
510
511 ✗ *out = NULL;
512
513 ✗ for (rate_index = 0; rate_index < 16; rate_index++)
514 ✗ if (ff_mpeg4audio_sample_rates[rate_index] == par->sample_rate)
515 ✗ break;
516 ✗ if (rate_index == 16) {
517 ✗ av_log(s, AV_LOG_ERROR, "Unsupported sample rate\n");
518 ✗ return AVERROR(ENOSYS);
519 }
520
521 ✗ config_byte[0] = 0x40;
522 ✗ config_byte[1] = 0;
523 ✗ config_byte[2] = 0x20 | rate_index;
524 ✗ config_byte[3] = par->ch_layout.nb_channels << 4;
525 ✗ config_byte[4] = 0x3f;
526 ✗ config_byte[5] = 0xc0;
527
528 ✗ config = av_malloc(6*2+1);
529 ✗ if (!config) {
530 ✗ av_log(s, AV_LOG_ERROR, "Cannot allocate memory for the config info.\n");
531 ✗ return AVERROR(ENOMEM);
532 }
533 ✗ ff_data_to_hex(config, config_byte, 6, 1);
534
535 ✗ *out = config;
536 ✗ return 0;
537 }
538
539 2 static int sdp_write_media_attributes(char *buff, int size, const AVStream *st,
540 int payload_type, AVFormatContext *fmt)
541 {
542 2 char *config = NULL;
543 2 const AVCodecParameters *p = st->codecpar;
544 2 int ret = 0;
545
546
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 2 switch (p->codec_id) {
547 ✗ case AV_CODEC_ID_AV1:
548 ✗ av_strlcatf(buff, size, "a=rtpmap:%d AV1/90000\r\n", payload_type);
549 ✗ if (p->extradata_size) {
550 ✗ ret = extradata2psets_av1(fmt, p, &config);
551 ✗ if (ret < 0)
552 ✗ return ret;
553 ✗ av_strlcatf(buff, size, "a=fmtp:%d %s\r\n", payload_type, config);
554 }
555 ✗ break;
556 ✗ case AV_CODEC_ID_DIRAC:
557 ✗ av_strlcatf(buff, size, "a=rtpmap:%d VC2/90000\r\n", payload_type);
558 ✗ break;
559 ✗ case AV_CODEC_ID_H264: {
560 ✗ int mode = 1;
561 ✗ if (fmt && fmt->oformat && fmt->oformat->priv_class &&
562 ✗ av_opt_flag_is_set(fmt->priv_data, "rtpflags", "h264_mode0"))
563 ✗ mode = 0;
564 ✗ if (p->extradata_size) {
565 ✗ ret = extradata2psets(fmt, p, &config);
566 ✗ if (ret < 0)
567 ✗ return ret;
568 }
569 ✗ av_strlcatf(buff, size, "a=rtpmap:%d H264/90000\r\n"
570 "a=fmtp:%d packetization-mode=%d%s\r\n",
571 payload_type,
572 ✗ payload_type, mode, config ? config : "");
573 ✗ break;
574 }
575 ✗ case AV_CODEC_ID_H261:
576 {
577 ✗ const char *pic_fmt = NULL;
578 /* only QCIF and CIF are specified as supported in RFC 4587 */
579 ✗ if (p->width == 176 && p->height == 144)
580 ✗ pic_fmt = "QCIF=1";
581 ✗ else if (p->width == 352 && p->height == 288)
582 ✗ pic_fmt = "CIF=1";
583 ✗ if (payload_type >= RTP_PT_PRIVATE)
584 ✗ av_strlcatf(buff, size, "a=rtpmap:%d H261/90000\r\n", payload_type);
585 ✗ if (pic_fmt)
586 ✗ av_strlcatf(buff, size, "a=fmtp:%d %s\r\n", payload_type, pic_fmt);
587 ✗ break;
588 }
589 ✗ case AV_CODEC_ID_H263:
590 case AV_CODEC_ID_H263P:
591 /* a=framesize is required by 3GPP TS 26.234 (PSS). It
592 * actually specifies the maximum video size, but we only know
593 * the current size. This is required for playback on Android
594 * stagefright and on Samsung bada. */
595 ✗ if (!fmt || !fmt->oformat->priv_class ||
596 ✗ !av_opt_flag_is_set(fmt->priv_data, "rtpflags", "rfc2190") ||
597 ✗ p->codec_id == AV_CODEC_ID_H263P)
598 ✗ av_strlcatf(buff, size, "a=rtpmap:%d H263-2000/90000\r\n"
599 "a=framesize:%d %d-%d\r\n",
600 payload_type,
601 ✗ payload_type, p->width, p->height);
602 ✗ break;
603 ✗ case AV_CODEC_ID_HEVC:
604 ✗ if (p->extradata_size) {
605 ✗ ret = extradata2psets_hevc(fmt, p, &config);
606 ✗ if (ret < 0)
607 ✗ return ret;
608 }
609 ✗ av_strlcatf(buff, size, "a=rtpmap:%d H265/90000\r\n", payload_type);
610 ✗ if (config)
611 ✗ av_strlcatf(buff, size, "a=fmtp:%d %s\r\n",
612 payload_type, config);
613 ✗ break;
614 1 case AV_CODEC_ID_MPEG4:
615
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616 1 ret = extradata2config(fmt, p, &config);
617
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 1 if (ret < 0)
618 ✗ return ret;
619 }
620 1 av_strlcatf(buff, size, "a=rtpmap:%d MP4V-ES/90000\r\n"
621 "a=fmtp:%d profile-level-id=1%s\r\n",
622 payload_type,
623
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 1 payload_type, config ? config : "");
624 1 break;
625 ✗ case AV_CODEC_ID_AAC:
626 ✗ if (fmt && fmt->oformat && fmt->oformat->priv_class &&
627 ✗ av_opt_flag_is_set(fmt->priv_data, "rtpflags", "latm")) {
628 ✗ ret = latm_context2config(fmt, p, &config);
629 ✗ if (ret < 0)
630 ✗ return ret;
631 ✗ av_strlcatf(buff, size, "a=rtpmap:%d MP4A-LATM/%d/%d\r\n"
632 "a=fmtp:%d profile-level-id=%d;cpresent=0;config=%s\r\n",
633 ✗ payload_type, p->sample_rate, p->ch_layout.nb_channels,
634 payload_type, latm_context2profilelevel(p), config);
635 } else {
636 ✗ if (p->extradata_size) {
637 ✗ ret = extradata2config(fmt, p, &config);
638 ✗ if (ret < 0)
639 ✗ return ret;
640 } else {
641 /* FIXME: maybe we can forge config information based on the
642 * codec parameters...
643 */
644 ✗ av_log(fmt, AV_LOG_ERROR, "AAC with no global headers is currently not supported.\n");
645 ✗ return AVERROR(ENOSYS);
646 }
647 ✗ av_strlcatf(buff, size, "a=rtpmap:%d MPEG4-GENERIC/%d/%d\r\n"
648 "a=fmtp:%d profile-level-id=1;"
649 "mode=AAC-hbr;sizelength=13;indexlength=3;"
650 "indexdeltalength=3%s\r\n",
651 ✗ payload_type, p->sample_rate, p->ch_layout.nb_channels,
652 payload_type, config);
653 }
654 ✗ break;
655 ✗ case AV_CODEC_ID_PCM_S16BE:
656 ✗ if (payload_type >= RTP_PT_PRIVATE)
657 ✗ av_strlcatf(buff, size, "a=rtpmap:%d L16/%d/%d\r\n",
658 payload_type,
659 ✗ p->sample_rate, p->ch_layout.nb_channels);
660 ✗ break;
661 ✗ case AV_CODEC_ID_PCM_S24BE:
662 ✗ if (payload_type >= RTP_PT_PRIVATE)
663 ✗ av_strlcatf(buff, size, "a=rtpmap:%d L24/%d/%d\r\n",
664 payload_type,
665 ✗ p->sample_rate, p->ch_layout.nb_channels);
666 ✗ break;
667 ✗ case AV_CODEC_ID_PCM_MULAW:
668 ✗ if (payload_type >= RTP_PT_PRIVATE)
669 ✗ av_strlcatf(buff, size, "a=rtpmap:%d PCMU/%d/%d\r\n",
670 payload_type,
671 ✗ p->sample_rate, p->ch_layout.nb_channels);
672 ✗ break;
673 1 case AV_CODEC_ID_PCM_ALAW:
674
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 1 if (payload_type >= RTP_PT_PRIVATE)
675 1 av_strlcatf(buff, size, "a=rtpmap:%d PCMA/%d/%d\r\n",
676 payload_type,
677 1 p->sample_rate, p->ch_layout.nb_channels);
678 1 break;
679 ✗ case AV_CODEC_ID_AMR_NB:
680 ✗ av_strlcatf(buff, size, "a=rtpmap:%d AMR/%d/%d\r\n"
681 "a=fmtp:%d octet-align=1\r\n",
682 ✗ payload_type, p->sample_rate, p->ch_layout.nb_channels,
683 payload_type);
684 ✗ break;
685 ✗ case AV_CODEC_ID_AMR_WB:
686 ✗ av_strlcatf(buff, size, "a=rtpmap:%d AMR-WB/%d/%d\r\n"
687 "a=fmtp:%d octet-align=1\r\n",
688 ✗ payload_type, p->sample_rate, p->ch_layout.nb_channels,
689 payload_type);
690 ✗ break;
691 ✗ case AV_CODEC_ID_VORBIS:
692 ✗ if (p->extradata_size)
693 ✗ ret = xiph_extradata2config(fmt, p, &config);
694 else {
695 ✗ av_log(fmt, AV_LOG_ERROR, "Vorbis configuration info missing\n");
696 ✗ ret = AVERROR_INVALIDDATA;
697 }
698 ✗ if (ret < 0)
699 ✗ return ret;
700
701 ✗ av_strlcatf(buff, size, "a=rtpmap:%d vorbis/%d/%d\r\n"
702 "a=fmtp:%d configuration=%s\r\n",
703 ✗ payload_type, p->sample_rate, p->ch_layout.nb_channels,
704 payload_type, config);
705 ✗ break;
706 ✗ case AV_CODEC_ID_THEORA: {
707 const char *pix_fmt;
708 ✗ switch (p->format) {
709 ✗ case AV_PIX_FMT_YUV420P:
710 ✗ pix_fmt = "YCbCr-4:2:0";
711 ✗ break;
712 ✗ case AV_PIX_FMT_YUV422P:
713 ✗ pix_fmt = "YCbCr-4:2:2";
714 ✗ break;
715 ✗ case AV_PIX_FMT_YUV444P:
716 ✗ pix_fmt = "YCbCr-4:4:4";
717 ✗ break;
718 ✗ default:
719 ✗ av_log(fmt, AV_LOG_ERROR, "Unsupported pixel format.\n");
720 ✗ return AVERROR(ENOSYS);
721 }
722
723 ✗ if (p->extradata_size)
724 ✗ ret = xiph_extradata2config(fmt, p, &config);
725 else {
726 ✗ av_log(fmt, AV_LOG_ERROR, "Theora configuration info missing\n");
727 ✗ ret = AVERROR_INVALIDDATA;
728 }
729 ✗ if (ret < 0)
730 ✗ return ret;
731
732 ✗ av_strlcatf(buff, size, "a=rtpmap:%d theora/90000\r\n"
733 "a=fmtp:%d delivery-method=inline; "
734 "width=%d; height=%d; sampling=%s; "
735 "configuration=%s\r\n",
736 payload_type, payload_type,
737 ✗ p->width, p->height, pix_fmt, config);
738 ✗ break;
739 }
740 ✗ case AV_CODEC_ID_BITPACKED:
741 case AV_CODEC_ID_RAWVIDEO: {
742 const char *pix_fmt;
743 ✗ int bit_depth = 8;
744
745 ✗ switch (p->format) {
746 ✗ case AV_PIX_FMT_UYVY422:
747 ✗ pix_fmt = "YCbCr-4:2:2";
748 ✗ break;
749 ✗ case AV_PIX_FMT_YUV422P10:
750 ✗ pix_fmt = "YCbCr-4:2:2";
751 ✗ bit_depth = 10;
752 ✗ break;
753 ✗ case AV_PIX_FMT_YUV420P:
754 ✗ pix_fmt = "YCbCr-4:2:0";
755 ✗ break;
756 ✗ case AV_PIX_FMT_RGB24:
757 ✗ pix_fmt = "RGB";
758 ✗ break;
759 ✗ case AV_PIX_FMT_BGR24:
760 ✗ pix_fmt = "BGR";
761 ✗ break;
762 ✗ default:
763 ✗ av_log(fmt, AV_LOG_ERROR, "Unsupported pixel format.\n");
764 ✗ return AVERROR(ENOSYS);
765 }
766
767 ✗ av_strlcatf(buff, size, "a=rtpmap:%d raw/90000\r\n"
768 "a=fmtp:%d sampling=%s; "
769 "width=%d; height=%d; "
770 "depth=%d",
771 payload_type, payload_type,
772 ✗ pix_fmt, p->width, p->height, bit_depth);
773 ✗ if (p->field_order != AV_FIELD_PROGRESSIVE)
774 ✗ av_strlcatf(buff, size, "; interlace");
775 ✗ av_strlcatf(buff, size, "\r\n");
776 ✗ break;
777 }
778
779 ✗ case AV_CODEC_ID_VP8:
780 ✗ av_strlcatf(buff, size, "a=rtpmap:%d VP8/90000\r\n",
781 payload_type);
782 ✗ break;
783 ✗ case AV_CODEC_ID_VP9:
784 ✗ av_strlcatf(buff, size, "a=rtpmap:%d VP9/90000\r\n",
785 payload_type);
786 ✗ break;
787 ✗ case AV_CODEC_ID_MJPEG:
788 ✗ if (payload_type >= RTP_PT_PRIVATE)
789 ✗ av_strlcatf(buff, size, "a=rtpmap:%d JPEG/90000\r\n",
790 payload_type);
791 ✗ break;
792 ✗ case AV_CODEC_ID_ADPCM_G722:
793 ✗ if (payload_type >= RTP_PT_PRIVATE)
794 ✗ av_strlcatf(buff, size, "a=rtpmap:%d G722/%d/%d\r\n",
795 payload_type,
796 ✗ 8000, p->ch_layout.nb_channels);
797 ✗ break;
798 ✗ case AV_CODEC_ID_ADPCM_G726: {
799 ✗ if (payload_type >= RTP_PT_PRIVATE)
800 ✗ av_strlcatf(buff, size, "a=rtpmap:%d AAL2-G726-%d/%d\r\n",
801 payload_type,
802 ✗ p->bits_per_coded_sample*8,
803 ✗ p->sample_rate);
804 ✗ break;
805 }
806 ✗ case AV_CODEC_ID_ADPCM_G726LE: {
807 ✗ if (payload_type >= RTP_PT_PRIVATE)
808 ✗ av_strlcatf(buff, size, "a=rtpmap:%d G726-%d/%d\r\n",
809 payload_type,
810 ✗ p->bits_per_coded_sample*8,
811 ✗ p->sample_rate);
812 ✗ break;
813 }
814 ✗ case AV_CODEC_ID_ILBC:
815 ✗ av_strlcatf(buff, size, "a=rtpmap:%d iLBC/%d\r\n"
816 "a=fmtp:%d mode=%d\r\n",
817 ✗ payload_type, p->sample_rate,
818 ✗ payload_type, p->block_align == 38 ? 20 : 30);
819 ✗ break;
820 ✗ case AV_CODEC_ID_SPEEX:
821 ✗ av_strlcatf(buff, size, "a=rtpmap:%d speex/%d\r\n",
822 ✗ payload_type, p->sample_rate);
823 ✗ break;
824 ✗ case AV_CODEC_ID_OPUS:
825 /* The opus RTP draft says that all opus streams MUST be declared
826 as stereo, to avoid negotiation failures. The actual number of
827 channels can change on a packet-by-packet basis. The number of
828 channels a receiver prefers to receive or a sender plans to send
829 can be declared via fmtp parameters (both default to mono), but
830 receivers MUST be able to receive and process stereo packets. */
831 ✗ av_strlcatf(buff, size, "a=rtpmap:%d opus/48000/2\r\n",
832 payload_type);
833 ✗ if (p->ch_layout.nb_channels == 2) {
834 ✗ av_strlcatf(buff, size, "a=fmtp:%d sprop-stereo=1\r\n",
835 payload_type);
836 }
837 ✗ break;
838 ✗ default:
839 /* Nothing special to do here... */
840 ✗ break;
841 }
842
843 2 av_free(config);
844
845 2 return 0;
846 }
847
848 2 int ff_sdp_write_media(char *buff, int size, const AVStream *st, int idx,
849 const char *dest_addr, const char *dest_type,
850 int port, int ttl, AVFormatContext *fmt)
851 {
852 2 const AVCodecParameters *p = st->codecpar;
853 const char *type;
854 int payload_type;
855
856 2 payload_type = ff_rtp_get_payload_type(fmt, st->codecpar, idx);
857
858
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 2 switch (p->codec_type) {
859 1 case AVMEDIA_TYPE_VIDEO : type = "video" ; break;
860 1 case AVMEDIA_TYPE_AUDIO : type = "audio" ; break;
861 ✗ case AVMEDIA_TYPE_SUBTITLE: type = "text" ; break;
862 ✗ default : type = "application"; break;
863 }
864
865 2 av_strlcatf(buff, size, "m=%s %d RTP/AVP %d\r\n", type, port, payload_type);
866 2 sdp_write_address(buff, size, dest_addr, dest_type, ttl);
867
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868 2 av_strlcatf(buff, size, "b=AS:%"PRId64"\r\n", p->bit_rate / 1000);
869 }
870
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 2 if (p->framerate.num > 0 && p->framerate.den > 0) {
871 1 av_strlcatf(buff, size, "a=framerate:%g\r\n", av_q2d(p->framerate));
872 }
873
874 2 return sdp_write_media_attributes(buff, size, st, payload_type, fmt);
875 }
876
877 ✗ int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size)
878 {
879 ✗ AVDictionaryEntry *title = av_dict_get(ac[0]->metadata, "title", NULL, 0);
880 ✗ struct sdp_session_level s = { 0 };
881 ✗ int i, j, port, ttl, is_multicast, index = 0;
882 char dst[32], dst_type[5];
883
884 ✗ memset(buf, 0, size);
885 ✗ s.user = "-";
886 ✗ s.src_addr = "127.0.0.1"; /* FIXME: Properly set this */
887 ✗ s.src_type = "IP4";
888 ✗ s.name = title ? title->value : "No Name";
889
890 ✗ port = 0;
891 ✗ ttl = 0;
892 ✗ if (n_files == 1) {
893 ✗ port = sdp_get_address(dst, sizeof(dst), &ttl, ac[0]->url ? ac[0]->url : "");
894 ✗ is_multicast = resolve_destination(dst, sizeof(dst), dst_type,
895 sizeof(dst_type));
896 ✗ if (!is_multicast)
897 ✗ ttl = 0;
898 ✗ if (dst[0]) {
899 ✗ s.dst_addr = dst;
900 ✗ s.dst_type = dst_type;
901 ✗ s.ttl = ttl;
902 ✗ if (!strcmp(dst_type, "IP6")) {
903 ✗ s.src_addr = "::1";
904 ✗ s.src_type = "IP6";
905 }
906 }
907 }
908 ✗ sdp_write_header(buf, size, &s);
909
910 ✗ dst[0] = 0;
911 ✗ for (i = 0; i < n_files; i++) {
912 ✗ if (n_files != 1) {
913 ✗ port = sdp_get_address(dst, sizeof(dst), &ttl, ac[i]->url ? ac[i]->url : "");
914 ✗ is_multicast = resolve_destination(dst, sizeof(dst), dst_type,
915 sizeof(dst_type));
916 ✗ if (!is_multicast)
917 ✗ ttl = 0;
918 }
919 ✗ for (j = 0; j < ac[i]->nb_streams; j++) {
920 ✗ int ret = ff_sdp_write_media(buf, size, ac[i]->streams[j], index++,
921 ✗ dst[0] ? dst : NULL, dst_type,
922 ✗ (port > 0) ? port + j * 2 : 0,
923 ✗ ttl, ac[i]);
924 ✗ if (ret < 0)
925 ✗ return ret;
926
927 ✗ if (port <= 0) {
928 ✗ av_strlcatf(buf, size,
929 "a=control:streamid=%d\r\n", i + j);
930 }
931 ✗ if (ac[i]->pb && ac[i]->pb->av_class) {
932 ✗ uint8_t *crypto_suite = NULL, *crypto_params = NULL;
933 ✗ av_opt_get(ac[i]->pb, "srtp_out_suite", AV_OPT_SEARCH_CHILDREN,
934 &crypto_suite);
935 ✗ av_opt_get(ac[i]->pb, "srtp_out_params", AV_OPT_SEARCH_CHILDREN,
936 &crypto_params);
937 ✗ if (crypto_suite && crypto_suite[0])
938 ✗ av_strlcatf(buf, size,
939 "a=crypto:1 %s inline:%s\r\n",
940 crypto_suite, crypto_params);
941 ✗ av_free(crypto_suite);
942 ✗ av_free(crypto_params);
943 }
944 }
945 }
946
947 ✗ return 0;
948 }
949 #else
950 int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size)
951 {
952 return AVERROR(ENOSYS);
953 }
954
955 int ff_sdp_write_media(char *buff, int size, const AVStream *st, int idx,
956 const char *dest_addr, const char *dest_type,
957 int port, int ttl, AVFormatContext *fmt)
958 {
959 return AVERROR(ENOSYS);
960 }
961 #endif
962