rtp: set the payload type as stream id
[libav.git] / libavformat / sdp.c
CommitLineData
c5388c07
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1/*
2 * copyright (c) 2007 Luca Abeni
3 *
2912e87a 4 * This file is part of Libav.
c5388c07 5 *
2912e87a 6 * Libav is free software; you can redistribute it and/or
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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 *
2912e87a 11 * Libav is distributed in the hope that it will be useful,
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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
2912e87a 17 * License along with Libav; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
c47b0738 21#include <string.h>
245976da
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22#include "libavutil/avstring.h"
23#include "libavutil/base64.h"
d2d67e42 24#include "libavutil/dict.h"
ab0287fc 25#include "libavutil/parseutils.h"
08321228 26#include "libavutil/opt.h"
91af5601 27#include "libavcodec/xiph.h"
08321228 28#include "libavcodec/mpeg4audio.h"
c5388c07 29#include "avformat.h"
f1c80e35 30#include "internal.h"
29e35d67 31#include "avc.h"
759d98d0 32#include "rtp.h"
51a269cd
MS
33#if CONFIG_NETWORK
34#include "network.h"
35#endif
c5388c07 36
b250f9c6 37#if CONFIG_RTP_MUXER
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38#define MAX_EXTRADATA_SIZE ((INT_MAX - 10) / 2)
39
40struct sdp_session_level {
41 int sdp_version; /**< protocol version (currently 0) */
7be75dd7 42 int id; /**< session ID */
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43 int version; /**< session version */
44 int start_time; /**< session start time (NTP time, in seconds),
7be75dd7 45 or 0 in case of permanent session */
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46 int end_time; /**< session end time (NTP time, in seconds),
47 or 0 if the session is not bounded */
48 int ttl; /**< TTL, in case of multicast stream */
49 const char *user; /**< username of the session's creator */
50 const char *src_addr; /**< IP address of the machine from which the session was created */
7ad1dc54 51 const char *src_type; /**< address type of src_addr */
c5388c07 52 const char *dst_addr; /**< destination IP address (can be multicast) */
7ad1dc54 53 const char *dst_type; /**< destination IP address type */
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54 const char *name; /**< session name (can be an empty string) */
55};
56
7ad1dc54
MS
57static void sdp_write_address(char *buff, int size, const char *dest_addr,
58 const char *dest_type, int ttl)
c5388c07
LA
59{
60 if (dest_addr) {
7ad1dc54
MS
61 if (!dest_type)
62 dest_type = "IP4";
6898677e
MS
63 if (ttl > 0 && !strcmp(dest_type, "IP4")) {
64 /* The TTL should only be specified for IPv4 multicast addresses,
65 * not for IPv6. */
7ad1dc54 66 av_strlcatf(buff, size, "c=IN %s %s/%d\r\n", dest_type, dest_addr, ttl);
c5388c07 67 } else {
7ad1dc54 68 av_strlcatf(buff, size, "c=IN %s %s\r\n", dest_type, dest_addr);
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LA
69 }
70 }
71}
72
73static void sdp_write_header(char *buff, int size, struct sdp_session_level *s)
74{
75 av_strlcatf(buff, size, "v=%d\r\n"
7ad1dc54 76 "o=- %d %d IN %s %s\r\n"
56e6f830 77 "s=%s\r\n",
c5388c07 78 s->sdp_version,
7ad1dc54 79 s->id, s->version, s->src_type, s->src_addr,
f3650b23 80 s->name);
7ad1dc54 81 sdp_write_address(buff, size, s->dst_addr, s->dst_type, s->ttl);
56e6f830
LA
82 av_strlcatf(buff, size, "t=%d %d\r\n"
83 "a=tool:libavformat " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\r\n",
84 s->start_time, s->end_time);
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85}
86
51a269cd 87#if CONFIG_NETWORK
10105c9b 88static int resolve_destination(char *dest_addr, int size, char *type,
87b2b40a 89 int type_size)
51a269cd 90{
a92be9b8 91 struct addrinfo hints = { 0 }, *ai;
10105c9b 92 int is_multicast;
51a269cd 93
7ad1dc54 94 av_strlcpy(type, "IP4", type_size);
51a269cd 95 if (!dest_addr[0])
10105c9b 96 return 0;
51a269cd
MS
97
98 /* Resolve the destination, since it must be written
99 * as a numeric IP address in the SDP. */
100
51a269cd 101 if (getaddrinfo(dest_addr, NULL, &hints, &ai))
10105c9b 102 return 0;
5a8693ef
MS
103 getnameinfo(ai->ai_addr, ai->ai_addrlen, dest_addr, size,
104 NULL, 0, NI_NUMERICHOST);
095e5c0b 105#ifdef AF_INET6
5a8693ef
MS
106 if (ai->ai_family == AF_INET6)
107 av_strlcpy(type, "IP6", type_size);
095e5c0b 108#endif
10105c9b 109 is_multicast = ff_is_multicast_address(ai->ai_addr);
51a269cd 110 freeaddrinfo(ai);
10105c9b 111 return is_multicast;
51a269cd
MS
112}
113#else
10105c9b 114static int resolve_destination(char *dest_addr, int size, char *type,
87b2b40a 115 int type_size)
51a269cd 116{
10105c9b 117 return 0;
51a269cd
MS
118}
119#endif
120
91cd7eb6 121static int sdp_get_address(char *dest_addr, int size, int *ttl, const char *url)
c5388c07
LA
122{
123 int port;
124 const char *p;
c47b0738 125 char proto[32];
c5388c07 126
f3bfe388 127 av_url_split(proto, sizeof(proto), NULL, 0, dest_addr, size, &port, NULL, 0, url);
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LA
128
129 *ttl = 0;
c47b0738
MS
130
131 if (strcmp(proto, "rtp")) {
132 /* The url isn't for the actual rtp sessions,
133 * don't parse out anything else than the destination.
134 */
135 return 0;
136 }
137
c5388c07
LA
138 p = strchr(url, '?');
139 if (p) {
140 char buff[64];
c5388c07 141
ab0287fc 142 if (av_find_info_tag(buff, sizeof(buff), "ttl", p)) {
87b2b40a
MS
143 *ttl = strtol(buff, NULL, 10);
144 } else {
145 *ttl = 5;
146 }
c5388c07
LA
147 }
148
149 return port;
150}
151
29e35d67
LA
152#define MAX_PSET_SIZE 1024
153static char *extradata2psets(AVCodecContext *c)
154{
155 char *psets, *p;
a1fc4d4a 156 const uint8_t *r;
d4bba93f
MS
157 static const char pset_string[] = "; sprop-parameter-sets=";
158 static const char profile_string[] = "; profile-level-id=";
0ebd4083
MS
159 uint8_t *orig_extradata = NULL;
160 int orig_extradata_size = 0;
06b5246c 161 const uint8_t *sps = NULL, *sps_end;
29e35d67
LA
162
163 if (c->extradata_size > MAX_EXTRADATA_SIZE) {
7be75dd7 164 av_log(c, AV_LOG_ERROR, "Too much extradata!\n");
29e35d67
LA
165
166 return NULL;
167 }
ede13f55
LA
168 if (c->extradata[0] == 1) {
169 uint8_t *dummy_p;
170 int dummy_int;
171 AVBitStreamFilterContext *bsfc= av_bitstream_filter_init("h264_mp4toannexb");
172
173 if (!bsfc) {
174 av_log(c, AV_LOG_ERROR, "Cannot open the h264_mp4toannexb BSF!\n");
175
176 return NULL;
177 }
0ebd4083
MS
178
179 orig_extradata_size = c->extradata_size;
180 orig_extradata = av_mallocz(orig_extradata_size +
181 FF_INPUT_BUFFER_PADDING_SIZE);
182 if (!orig_extradata) {
183 av_bitstream_filter_close(bsfc);
184 return NULL;
185 }
186 memcpy(orig_extradata, c->extradata, orig_extradata_size);
ede13f55
LA
187 av_bitstream_filter_filter(bsfc, c, NULL, &dummy_p, &dummy_int, NULL, 0, 0);
188 av_bitstream_filter_close(bsfc);
189 }
29e35d67
LA
190
191 psets = av_mallocz(MAX_PSET_SIZE);
192 if (psets == NULL) {
7be75dd7 193 av_log(c, AV_LOG_ERROR, "Cannot allocate memory for the parameter sets.\n");
0ebd4083 194 av_free(orig_extradata);
29e35d67
LA
195 return NULL;
196 }
197 memcpy(psets, pset_string, strlen(pset_string));
198 p = psets + strlen(pset_string);
199 r = ff_avc_find_startcode(c->extradata, c->extradata + c->extradata_size);
200 while (r < c->extradata + c->extradata_size) {
a1fc4d4a 201 const uint8_t *r1;
99f373f3 202 uint8_t nal_type;
29e35d67
LA
203
204 while (!*(r++));
99f373f3 205 nal_type = *r & 0x1f;
29e35d67 206 r1 = ff_avc_find_startcode(r, c->extradata + c->extradata_size);
99f373f3
MS
207 if (nal_type != 7 && nal_type != 8) { /* Only output SPS and PPS */
208 r = r1;
209 continue;
210 }
29e35d67
LA
211 if (p != (psets + strlen(pset_string))) {
212 *p = ',';
213 p++;
214 }
06b5246c
MS
215 if (!sps) {
216 sps = r;
217 sps_end = r1;
218 }
29e35d67 219 if (av_base64_encode(p, MAX_PSET_SIZE - (p - psets), r, r1 - r) == NULL) {
7be75dd7 220 av_log(c, AV_LOG_ERROR, "Cannot Base64-encode %td %td!\n", MAX_PSET_SIZE - (p - psets), r1 - r);
29e35d67
LA
221 av_free(psets);
222
223 return NULL;
224 }
225 p += strlen(p);
226 r = r1;
227 }
06b5246c
MS
228 if (sps && sps_end - sps >= 4) {
229 memcpy(p, profile_string, strlen(profile_string));
230 p += strlen(p);
231 ff_data_to_hex(p, sps + 1, 3, 0);
232 p[6] = '\0';
233 }
0ebd4083
MS
234 if (orig_extradata) {
235 av_free(c->extradata);
236 c->extradata = orig_extradata;
237 c->extradata_size = orig_extradata_size;
238 }
29e35d67
LA
239
240 return psets;
241}
242
81ab1fa1 243static char *extradata2config(AVCodecContext *c)
4901263a
LA
244{
245 char *config;
246
81ab1fa1 247 if (c->extradata_size > MAX_EXTRADATA_SIZE) {
7be75dd7 248 av_log(c, AV_LOG_ERROR, "Too much extradata!\n");
4901263a
LA
249
250 return NULL;
251 }
81ab1fa1 252 config = av_malloc(10 + c->extradata_size * 2);
4901263a 253 if (config == NULL) {
7be75dd7 254 av_log(c, AV_LOG_ERROR, "Cannot allocate memory for the config info.\n");
4901263a
LA
255 return NULL;
256 }
257 memcpy(config, "; config=", 9);
ddbeb954 258 ff_data_to_hex(config + 9, c->extradata, c->extradata_size, 0);
81ab1fa1 259 config[9 + c->extradata_size * 2] = 0;
4901263a
LA
260
261 return config;
262}
263
91af5601
JA
264static char *xiph_extradata2config(AVCodecContext *c)
265{
266 char *config, *encoded_config;
267 uint8_t *header_start[3];
268 int headers_len, header_len[3], config_len;
269 int first_header_size;
270
271 switch (c->codec_id) {
36ef5369 272 case AV_CODEC_ID_THEORA:
91af5601
JA
273 first_header_size = 42;
274 break;
36ef5369 275 case AV_CODEC_ID_VORBIS:
91af5601
JA
276 first_header_size = 30;
277 break;
278 default:
279 av_log(c, AV_LOG_ERROR, "Unsupported Xiph codec ID\n");
280 return NULL;
281 }
282
357db4c2 283 if (avpriv_split_xiph_headers(c->extradata, c->extradata_size,
91af5601
JA
284 first_header_size, header_start,
285 header_len) < 0) {
286 av_log(c, AV_LOG_ERROR, "Extradata corrupt.\n");
287 return NULL;
288 }
289
290 headers_len = header_len[0] + header_len[2];
291 config_len = 4 + // count
292 3 + // ident
293 2 + // packet size
294 1 + // header count
295 2 + // header size
296 headers_len; // and the rest
297
298 config = av_malloc(config_len);
299 if (!config)
300 goto xiph_fail;
301
302 encoded_config = av_malloc(AV_BASE64_SIZE(config_len));
303 if (!encoded_config) {
304 av_free(config);
305 goto xiph_fail;
306 }
307
308 config[0] = config[1] = config[2] = 0;
309 config[3] = 1;
b5c4bb98
MS
310 config[4] = (RTP_XIPH_IDENT >> 16) & 0xff;
311 config[5] = (RTP_XIPH_IDENT >> 8) & 0xff;
312 config[6] = (RTP_XIPH_IDENT ) & 0xff;
91af5601
JA
313 config[7] = (headers_len >> 8) & 0xff;
314 config[8] = headers_len & 0xff;
315 config[9] = 2;
316 config[10] = header_len[0];
317 config[11] = 0; // size of comment header; nonexistent
318 memcpy(config + 12, header_start[0], header_len[0]);
319 memcpy(config + 12 + header_len[0], header_start[2], header_len[2]);
320
321 av_base64_encode(encoded_config, AV_BASE64_SIZE(config_len),
322 config, config_len);
323 av_free(config);
324
325 return encoded_config;
326
327xiph_fail:
328 av_log(c, AV_LOG_ERROR,
329 "Not enough memory for configuration string\n");
330 return NULL;
331}
332
08321228
JCR
333static int latm_context2profilelevel(AVCodecContext *c)
334{
335 /* MP4A-LATM
336 * The RTP payload format specification is described in RFC 3016
337 * The encoding specifications are provided in ISO/IEC 14496-3 */
338
339 int profile_level = 0x2B;
340
341 /* TODO: AAC Profile only supports AAC LC Object Type.
342 * Different Object Types should implement different Profile Levels */
343
344 if (c->sample_rate <= 24000) {
345 if (c->channels <= 2)
346 profile_level = 0x28; // AAC Profile, Level 1
347 } else if (c->sample_rate <= 48000) {
348 if (c->channels <= 2) {
349 profile_level = 0x29; // AAC Profile, Level 2
350 } else if (c->channels <= 5) {
351 profile_level = 0x2A; // AAC Profile, Level 4
352 }
353 } else if (c->sample_rate <= 96000) {
354 if (c->channels <= 5) {
355 profile_level = 0x2B; // AAC Profile, Level 5
356 }
357 }
358
359 return profile_level;
360}
361
362static char *latm_context2config(AVCodecContext *c)
363{
364 /* MP4A-LATM
365 * The RTP payload format specification is described in RFC 3016
366 * The encoding specifications are provided in ISO/IEC 14496-3 */
367
368 uint8_t config_byte[6];
369 int rate_index;
370 char *config;
371
372 for (rate_index = 0; rate_index < 16; rate_index++)
59a9a235 373 if (avpriv_mpeg4audio_sample_rates[rate_index] == c->sample_rate)
08321228
JCR
374 break;
375 if (rate_index == 16) {
376 av_log(c, AV_LOG_ERROR, "Unsupported sample rate\n");
377 return NULL;
378 }
379
380 config_byte[0] = 0x40;
381 config_byte[1] = 0;
382 config_byte[2] = 0x20 | rate_index;
383 config_byte[3] = c->channels << 4;
384 config_byte[4] = 0x3f;
385 config_byte[5] = 0xc0;
386
387 config = av_malloc(6*2+1);
388 if (!config) {
389 av_log(c, AV_LOG_ERROR, "Cannot allocate memory for the config info.\n");
390 return NULL;
391 }
392 ff_data_to_hex(config, config_byte, 6, 1);
393 config[12] = 0;
394
395 return config;
396}
397
0558e266 398static char *sdp_write_media_attributes(char *buff, int size, AVCodecContext *c, int payload_type, AVFormatContext *fmt)
c5388c07
LA
399{
400 char *config = NULL;
401
402 switch (c->codec_id) {
36ef5369 403 case AV_CODEC_ID_H264: {
d77f4afa
MS
404 int mode = 1;
405 if (fmt && fmt->oformat->priv_class &&
406 av_opt_flag_is_set(fmt->priv_data, "rtpflags", "h264_mode0"))
407 mode = 0;
29e35d67
LA
408 if (c->extradata_size) {
409 config = extradata2psets(c);
410 }
b21cd0bc 411 av_strlcatf(buff, size, "a=rtpmap:%d H264/90000\r\n"
d77f4afa 412 "a=fmtp:%d packetization-mode=%d%s\r\n",
b21cd0bc 413 payload_type,
d77f4afa 414 payload_type, mode, config ? config : "");
b21cd0bc 415 break;
d77f4afa 416 }
36ef5369
AK
417 case AV_CODEC_ID_H263:
418 case AV_CODEC_ID_H263P:
9b14ec5f
MS
419 /* a=framesize is required by 3GPP TS 26.234 (PSS). It
420 * actually specifies the maximum video size, but we only know
421 * the current size. This is required for playback on Android
422 * stagefright and on Samsung bada. */
c4584f3c
MS
423 if (!fmt || !fmt->oformat->priv_class ||
424 !av_opt_flag_is_set(fmt->priv_data, "rtpflags", "rfc2190") ||
36ef5369 425 c->codec_id == AV_CODEC_ID_H263P)
9b14ec5f
MS
426 av_strlcatf(buff, size, "a=rtpmap:%d H263-2000/90000\r\n"
427 "a=framesize:%d %d-%d\r\n",
428 payload_type,
429 payload_type, c->width, c->height);
9edfaf3c 430 break;
36ef5369 431 case AV_CODEC_ID_MPEG4:
21b37480 432 if (c->extradata_size) {
81ab1fa1 433 config = extradata2config(c);
c5388c07
LA
434 }
435 av_strlcatf(buff, size, "a=rtpmap:%d MP4V-ES/90000\r\n"
436 "a=fmtp:%d profile-level-id=1%s\r\n",
437 payload_type,
438 payload_type, config ? config : "");
439 break;
36ef5369 440 case AV_CODEC_ID_AAC:
08321228
JCR
441 if (fmt && fmt->oformat->priv_class &&
442 av_opt_flag_is_set(fmt->priv_data, "rtpflags", "latm")) {
443 config = latm_context2config(c);
444 if (!config)
445 return NULL;
446 av_strlcatf(buff, size, "a=rtpmap:%d MP4A-LATM/%d/%d\r\n"
447 "a=fmtp:%d profile-level-id=%d;cpresent=0;config=%s\r\n",
448 payload_type, c->sample_rate, c->channels,
449 payload_type, latm_context2profilelevel(c), config);
450 } else {
9c434ce8
MS
451 if (c->extradata_size) {
452 config = extradata2config(c);
453 } else {
454 /* FIXME: maybe we can forge config information based on the
455 * codec parameters...
456 */
457 av_log(c, AV_LOG_ERROR, "AAC with no global headers is currently not supported.\n");
458 return NULL;
459 }
460 if (config == NULL) {
461 return NULL;
462 }
463 av_strlcatf(buff, size, "a=rtpmap:%d MPEG4-GENERIC/%d/%d\r\n"
464 "a=fmtp:%d profile-level-id=1;"
465 "mode=AAC-hbr;sizelength=13;indexlength=3;"
466 "indexdeltalength=3%s\r\n",
467 payload_type, c->sample_rate, c->channels,
468 payload_type, config);
08321228 469 }
4901263a 470 break;
36ef5369 471 case AV_CODEC_ID_PCM_S16BE:
f877954f 472 if (payload_type >= RTP_PT_PRIVATE)
c9215bab
LA
473 av_strlcatf(buff, size, "a=rtpmap:%d L16/%d/%d\r\n",
474 payload_type,
475 c->sample_rate, c->channels);
476 break;
36ef5369 477 case AV_CODEC_ID_PCM_MULAW:
f877954f 478 if (payload_type >= RTP_PT_PRIVATE)
c9215bab
LA
479 av_strlcatf(buff, size, "a=rtpmap:%d PCMU/%d/%d\r\n",
480 payload_type,
481 c->sample_rate, c->channels);
482 break;
36ef5369 483 case AV_CODEC_ID_PCM_ALAW:
f877954f 484 if (payload_type >= RTP_PT_PRIVATE)
c9215bab
LA
485 av_strlcatf(buff, size, "a=rtpmap:%d PCMA/%d/%d\r\n",
486 payload_type,
487 c->sample_rate, c->channels);
488 break;
36ef5369 489 case AV_CODEC_ID_AMR_NB:
08e696c0
MS
490 av_strlcatf(buff, size, "a=rtpmap:%d AMR/%d/%d\r\n"
491 "a=fmtp:%d octet-align=1\r\n",
492 payload_type, c->sample_rate, c->channels,
493 payload_type);
494 break;
36ef5369 495 case AV_CODEC_ID_AMR_WB:
08e696c0
MS
496 av_strlcatf(buff, size, "a=rtpmap:%d AMR-WB/%d/%d\r\n"
497 "a=fmtp:%d octet-align=1\r\n",
498 payload_type, c->sample_rate, c->channels,
499 payload_type);
500 break;
36ef5369 501 case AV_CODEC_ID_VORBIS:
91af5601
JA
502 if (c->extradata_size)
503 config = xiph_extradata2config(c);
504 else
505 av_log(c, AV_LOG_ERROR, "Vorbis configuration info missing\n");
506 if (!config)
507 return NULL;
508
509 av_strlcatf(buff, size, "a=rtpmap:%d vorbis/%d/%d\r\n"
510 "a=fmtp:%d configuration=%s\r\n",
511 payload_type, c->sample_rate, c->channels,
512 payload_type, config);
513 break;
36ef5369 514 case AV_CODEC_ID_THEORA: {
91af5601
JA
515 const char *pix_fmt;
516 if (c->extradata_size)
517 config = xiph_extradata2config(c);
518 else
519 av_log(c, AV_LOG_ERROR, "Theora configuation info missing\n");
520 if (!config)
521 return NULL;
522
523 switch (c->pix_fmt) {
716d413c 524 case AV_PIX_FMT_YUV420P:
91af5601
JA
525 pix_fmt = "YCbCr-4:2:0";
526 break;
716d413c 527 case AV_PIX_FMT_YUV422P:
91af5601
JA
528 pix_fmt = "YCbCr-4:2:2";
529 break;
716d413c 530 case AV_PIX_FMT_YUV444P:
91af5601
JA
531 pix_fmt = "YCbCr-4:4:4";
532 break;
533 default:
534 av_log(c, AV_LOG_ERROR, "Unsupported pixel format.\n");
535 return NULL;
536 }
537
538 av_strlcatf(buff, size, "a=rtpmap:%d theora/90000\r\n"
539 "a=fmtp:%d delivery-method=inline; "
540 "width=%d; height=%d; sampling=%s; "
541 "configuration=%s\r\n",
542 payload_type, payload_type,
543 c->width, c->height, pix_fmt, config);
544 break;
545 }
36ef5369 546 case AV_CODEC_ID_VP8:
7b18d94c
JA
547 av_strlcatf(buff, size, "a=rtpmap:%d VP8/90000\r\n",
548 payload_type);
549 break;
cee1950b
SP
550 case AV_CODEC_ID_MJPEG:
551 if (payload_type >= RTP_PT_PRIVATE)
552 av_strlcatf(buff, size, "a=rtpmap:%d JPEG/90000\r\n",
553 payload_type);
554 break;
36ef5369 555 case AV_CODEC_ID_ADPCM_G722:
0048a2a8
MS
556 if (payload_type >= RTP_PT_PRIVATE)
557 av_strlcatf(buff, size, "a=rtpmap:%d G722/%d/%d\r\n",
558 payload_type,
559 8000, c->channels);
560 break;
36ef5369 561 case AV_CODEC_ID_ADPCM_G726: {
04403ec2
MS
562 if (payload_type >= RTP_PT_PRIVATE)
563 av_strlcatf(buff, size, "a=rtpmap:%d G726-%d/%d\r\n",
564 payload_type,
565 c->bits_per_coded_sample*8,
566 c->sample_rate);
567 break;
568 }
36ef5369 569 case AV_CODEC_ID_ILBC:
579fd87b
MS
570 av_strlcatf(buff, size, "a=rtpmap:%d iLBC/%d\r\n"
571 "a=fmtp:%d mode=%d\r\n",
572 payload_type, c->sample_rate,
573 payload_type, c->block_align == 38 ? 20 : 30);
574 break;
490ae95a
DS
575 case AV_CODEC_ID_SPEEX:
576 av_strlcatf(buff, size, "a=rtpmap:%d speex/%d\r\n",
577 payload_type, c->sample_rate);
578 break;
c136a813
MS
579 case AV_CODEC_ID_OPUS:
580 av_strlcatf(buff, size, "a=rtpmap:%d opus/48000\r\n",
581 payload_type);
582 break;
c5388c07 583 default:
7be75dd7 584 /* Nothing special to do here... */
c5388c07
LA
585 break;
586 }
587
588 av_free(config);
589
590 return buff;
591}
592
8034130e
LB
593void ff_sdp_write_media(char *buff, int size, AVStream *st, int idx,
594 const char *dest_addr, const char *dest_type,
595 int port, int ttl, AVFormatContext *fmt)
c5388c07 596{
8034130e 597 AVCodecContext *c = st->codec;
c5388c07
LA
598 const char *type;
599 int payload_type;
600
8034130e 601 payload_type = ff_rtp_get_payload_type(fmt, c, idx);
c5388c07
LA
602
603 switch (c->codec_type) {
72415b2a
SS
604 case AVMEDIA_TYPE_VIDEO : type = "video" ; break;
605 case AVMEDIA_TYPE_AUDIO : type = "audio" ; break;
606 case AVMEDIA_TYPE_SUBTITLE: type = "text" ; break;
c5388c07
LA
607 default : type = "application"; break;
608 }
609
610 av_strlcatf(buff, size, "m=%s %d RTP/AVP %d\r\n", type, port, payload_type);
7ad1dc54 611 sdp_write_address(buff, size, dest_addr, dest_type, ttl);
83cc23c5
LA
612 if (c->bit_rate) {
613 av_strlcatf(buff, size, "b=AS:%d\r\n", c->bit_rate / 1000);
614 }
c5388c07 615
0558e266 616 sdp_write_media_attributes(buff, size, c, payload_type, fmt);
c5388c07
LA
617}
618
c234d40b 619int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size)
c5388c07 620{
d2d67e42 621 AVDictionaryEntry *title = av_dict_get(ac[0]->metadata, "title", NULL, 0);
a92be9b8 622 struct sdp_session_level s = { 0 };
8034130e 623 int i, j, port, ttl, is_multicast, index = 0;
7ad1dc54 624 char dst[32], dst_type[5];
c5388c07 625
c234d40b 626 memset(buf, 0, size);
c5388c07
LA
627 s.user = "-";
628 s.src_addr = "127.0.0.1"; /* FIXME: Properly set this */
7ad1dc54 629 s.src_type = "IP4";
f3650b23 630 s.name = title ? title->value : "No Name";
c5388c07
LA
631
632 port = 0;
633 ttl = 0;
634 if (n_files == 1) {
91cd7eb6 635 port = sdp_get_address(dst, sizeof(dst), &ttl, ac[0]->filename);
10105c9b
MS
636 is_multicast = resolve_destination(dst, sizeof(dst), dst_type,
637 sizeof(dst_type));
638 if (!is_multicast)
639 ttl = 0;
9ea7f03a 640 if (dst[0]) {
c5388c07 641 s.dst_addr = dst;
7ad1dc54 642 s.dst_type = dst_type;
c5388c07 643 s.ttl = ttl;
7ad1dc54
MS
644 if (!strcmp(dst_type, "IP6")) {
645 s.src_addr = "::1";
646 s.src_type = "IP6";
647 }
c5388c07
LA
648 }
649 }
c234d40b 650 sdp_write_header(buf, size, &s);
c5388c07
LA
651
652 dst[0] = 0;
653 for (i = 0; i < n_files; i++) {
654 if (n_files != 1) {
91cd7eb6 655 port = sdp_get_address(dst, sizeof(dst), &ttl, ac[i]->filename);
10105c9b
MS
656 is_multicast = resolve_destination(dst, sizeof(dst), dst_type,
657 sizeof(dst_type));
658 if (!is_multicast)
659 ttl = 0;
c5388c07
LA
660 }
661 for (j = 0; j < ac[i]->nb_streams; j++) {
8034130e
LB
662 ff_sdp_write_media(buf, size, ac[i]->streams[j], index++,
663 dst[0] ? dst : NULL, dst_type,
664 (port > 0) ? port + j * 2 : 0,
665 ttl, ac[i]);
c5388c07 666 if (port <= 0) {
c234d40b 667 av_strlcatf(buf, size,
c5388c07
LA
668 "a=control:streamid=%d\r\n", i + j);
669 }
670 }
671 }
672
8767b80f 673 return 0;
c5388c07 674}
7ba32703 675#else
c234d40b 676int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size)
7ba32703 677{
8767b80f 678 return AVERROR(ENOSYS);
7ba32703 679}
0341b699 680
8034130e
LB
681void ff_sdp_write_media(char *buff, int size, AVStream *st, int idx,
682 const char *dest_addr, const char *dest_type,
683 int port, int ttl, AVFormatContext *fmt)
0341b699
MS
684{
685}
7ba32703 686#endif