ffmpeg.c: rename map_meta_data option to map_metadata
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
1617ad97
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
1617ad97 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
1617ad97
FB
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1617ad97 20 */
245976da 21
f9337897 22#include "libavutil/base64.h"
245976da 23#include "libavutil/avstring.h"
6a5d31ac 24#include "libavutil/intreadwrite.h"
f5d33f52 25#include "libavutil/random_seed.h"
1617ad97
FB
26#include "avformat.h"
27
db0ed93e 28#include <sys/time.h>
a8475bbd
LB
29#if HAVE_POLL_H
30#include <poll.h>
6ad1c9c9 31#endif
ea452b54 32#include <strings.h>
e4a9e3cc 33#include "internal.h"
42572ef5 34#include "network.h"
cbfa66d0 35#include "os_support.h"
f5d33f52 36#include "http.h"
c971ff19 37#include "rtsp.h"
1617ad97 38
302879cb 39#include "rtpdec.h"
e9dea59f 40#include "rdt.h"
965a3ddb 41#include "rtpdec_formats.h"
a493f80a 42#include "rtpenc_chain.h"
4934884a 43
1617ad97 44//#define DEBUG
b6892136 45//#define DEBUG_RTP_TCP
1617ad97 46
a8475bbd 47/* Timeout values for socket poll, in ms,
9cba6f5f 48 * and read_packet(), in seconds */
a8475bbd 49#define POLL_TIMEOUT_MS 100
9cba6f5f 50#define READ_PACKET_TIMEOUT_S 10
a8475bbd 51#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 52#define SDP_MAX_SIZE 16384
96a7c975 53#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
9cba6f5f 54
1ef36a70
RB
55static void get_word_until_chars(char *buf, int buf_size,
56 const char *sep, const char **pp)
1617ad97
FB
57{
58 const char *p;
59 char *q;
60
61 p = *pp;
30619e6e 62 p += strspn(p, SPACE_CHARS);
1617ad97
FB
63 q = buf;
64 while (!strchr(sep, *p) && *p != '\0') {
65 if ((q - buf) < buf_size - 1)
66 *q++ = *p;
67 p++;
68 }
69 if (buf_size > 0)
70 *q = '\0';
71 *pp = p;
72}
73
1ef36a70
RB
74static void get_word_sep(char *buf, int buf_size, const char *sep,
75 const char **pp)
1617ad97 76{
1ef36a70
RB
77 if (**pp == '/') (*pp)++;
78 get_word_until_chars(buf, buf_size, sep, pp);
79}
1617ad97 80
1ef36a70
RB
81static void get_word(char *buf, int buf_size, const char **pp)
82{
83 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
84}
85
8bf0f969
MS
86/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
87 * and end time.
88 * Used for seeking in the rtp stream.
89 */
90static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
91{
92 char buf[256];
93
94 p += strspn(p, SPACE_CHARS);
95 if (!av_stristart(p, "npt=", &p))
96 return;
97
98 *start = AV_NOPTS_VALUE;
99 *end = AV_NOPTS_VALUE;
100
101 get_word_sep(buf, sizeof(buf), "-", &p);
102 *start = parse_date(buf, 1);
103 if (*p == '-') {
104 p++;
105 get_word_sep(buf, sizeof(buf), "-", &p);
106 *end = parse_date(buf, 1);
107 }
108// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
109// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
110}
111
112static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
113{
114 struct addrinfo hints, *ai = NULL;
115 memset(&hints, 0, sizeof(hints));
116 hints.ai_flags = AI_NUMERICHOST;
117 if (getaddrinfo(buf, NULL, &hints, &ai))
118 return -1;
119 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
120 freeaddrinfo(ai);
121 return 0;
122}
123
44b70ce5 124#if CONFIG_RTPDEC
003eb642
MS
125static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
126 RTSPStream *rtsp_st, AVCodecContext *codec)
127{
128 if (!handler)
129 return;
130 codec->codec_id = handler->codec_id;
131 rtsp_st->dynamic_handler = handler;
132 if (handler->open)
133 rtsp_st->dynamic_protocol_context = handler->open();
134}
135
c8965800 136/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 137static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 138 AVStream *st, RTSPStream *rtsp_st,
c8965800 139 int payload_type, const char *p)
93ced3e8 140{
86b6e387 141 AVCodecContext *codec = st->codec;
93ced3e8 142 char buf[256];
d1ccf0e0
RD
143 int i;
144 AVCodec *c;
7b49ce2e 145 const char *c_name;
93ced3e8 146
d1ccf0e0 147 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
148 * see if we can handle this kind of payload.
149 * The space should normally not be there but some Real streams or
150 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
151 * have a trailing space. */
152 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 153 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
154 RTPDynamicProtocolHandler *handler =
155 ff_rtp_handler_find_by_name(buf, codec->codec_type);
156 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
157 /* If no dynamic handler was found, check with the list of standard
158 * allocated types, if such a stream for some reason happens to
159 * use a private payload type. This isn't handled in rtpdec.c, since
160 * the format name from the rtpmap line never is passed into rtpdec. */
161 if (!rtsp_st->dynamic_handler)
162 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 163 } else {
c8965800
RB
164 /* We are in a standard case
165 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 166 /* search into AVRtpPayloadTypes[] */
7ed19d7f 167 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
168 }
169
170 c = avcodec_find_decoder(codec->codec_id);
171 if (c && c->name)
7b49ce2e 172 c_name = c->name;
d1ccf0e0 173 else
170870b7 174 c_name = "(null)";
d1ccf0e0 175
7515ed0c
RB
176 get_word_sep(buf, sizeof(buf), "/", &p);
177 i = atoi(buf);
178 switch (codec->codec_type) {
72415b2a 179 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
180 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
181 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
182 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
183 if (i > 0) {
184 codec->sample_rate = i;
86b6e387 185 av_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
186 get_word_sep(buf, sizeof(buf), "/", &p);
187 i = atoi(buf);
188 if (i > 0)
189 codec->channels = i;
190 // TODO: there is a bug here; if it is a mono stream, and
191 // less than 22000Hz, faad upconverts to stereo and twice
192 // the frequency. No problem, but the sample rate is being
193 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 194 }
7515ed0c
RB
195 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
196 codec->sample_rate);
197 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
198 codec->channels);
199 break;
72415b2a 200 case AVMEDIA_TYPE_VIDEO:
7515ed0c 201 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387
MS
202 if (i > 0)
203 av_set_pts_info(st, 32, 1, i);
7515ed0c
RB
204 break;
205 default:
206 break;
207 }
208 return 0;
93ced3e8
FB
209}
210
c2bfd816 211/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
212 * is broken out as a function because it is used in rtp_h264.c, which is
213 * forthcoming. */
3307e6ea 214int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 215 char *value, int value_size)
d0deedcb 216{
30619e6e 217 *p += strspn(*p, SPACE_CHARS);
c8965800 218 if (**p) {
d0deedcb
RM
219 get_word_sep(attr, attr_size, "=", p);
220 if (**p == '=')
221 (*p)++;
222 get_word_sep(value, value_size, ";", p);
223 if (**p == ';')
224 (*p)++;
225 return 1;
226 }
227 return 0;
228}
229
93ced3e8
FB
230typedef struct SDPParseState {
231 /* SDP only */
3fbd12d1 232 struct sockaddr_storage default_ip;
c8965800
RB
233 int default_ttl;
234 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
235} SDPParseState;
236
237static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
238 int letter, const char *buf)
239{
8b1ab7bf 240 RTSPState *rt = s->priv_data;
1617ad97
FB
241 char buf1[64], st_type[64];
242 const char *p;
72415b2a 243 enum AVMediaType codec_type;
fb65d2ca 244 int payload_type, i;
1617ad97
FB
245 AVStream *st;
246 RTSPStream *rtsp_st;
3fbd12d1 247 struct sockaddr_storage sdp_ip;
93ced3e8
FB
248 int ttl;
249
dfd2a005 250 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
251
252 p = buf;
cb760a47
RB
253 if (s1->skip_media && letter != 'm')
254 return;
c8965800 255 switch (letter) {
93ced3e8
FB
256 case 'c':
257 get_word(buf1, sizeof(buf1), &p);
258 if (strcmp(buf1, "IN") != 0)
259 return;
260 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 261 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
262 return;
263 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 264 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
265 return;
266 ttl = 16;
267 if (*p == '/') {
268 p++;
269 get_word_sep(buf1, sizeof(buf1), "/", &p);
270 ttl = atoi(buf1);
271 }
272 if (s->nb_streams == 0) {
273 s1->default_ip = sdp_ip;
274 s1->default_ttl = ttl;
275 } else {
276 st = s->streams[s->nb_streams - 1];
277 rtsp_st = st->priv_data;
278 rtsp_st->sdp_ip = sdp_ip;
279 rtsp_st->sdp_ttl = ttl;
280 }
281 break;
1617ad97 282 case 's':
2ef6c124 283 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
284 break;
285 case 'i':
286 if (s->nb_streams == 0) {
2ef6c124 287 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
288 break;
289 }
290 break;
291 case 'm':
292 /* new stream */
cb760a47 293 s1->skip_media = 0;
1617ad97
FB
294 get_word(st_type, sizeof(st_type), &p);
295 if (!strcmp(st_type, "audio")) {
72415b2a 296 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 297 } else if (!strcmp(st_type, "video")) {
72415b2a 298 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 299 } else if (!strcmp(st_type, "application")) {
72415b2a 300 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 301 } else {
cb760a47 302 s1->skip_media = 1;
1617ad97
FB
303 return;
304 }
1617ad97
FB
305 rtsp_st = av_mallocz(sizeof(RTSPStream));
306 if (!rtsp_st)
307 return;
8b1ab7bf
FB
308 rtsp_st->stream_index = -1;
309 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
310
311 rtsp_st->sdp_ip = s1->default_ip;
312 rtsp_st->sdp_ttl = s1->default_ttl;
313
93ced3e8
FB
314 get_word(buf1, sizeof(buf1), &p); /* port */
315 rtsp_st->sdp_port = atoi(buf1);
316
317 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 318
93ced3e8
FB
319 /* XXX: handle list of formats */
320 get_word(buf1, sizeof(buf1), &p); /* format list */
321 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 322
7ed19d7f 323 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
324 /* no corresponding stream */
325 } else {
326 st = av_new_stream(s, 0);
327 if (!st)
328 return;
329 st->priv_data = rtsp_st;
330 rtsp_st->stream_index = st->index;
01f4895c 331 st->codec->codec_type = codec_type;
d1ccf0e0 332 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 333 RTPDynamicProtocolHandler *handler;
8b1ab7bf 334 /* if standard payload type, we can find the codec right now */
bf6d9818 335 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
336 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
337 st->codec->sample_rate > 0)
86b6e387 338 av_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
339 /* Even static payload types may need a custom depacketizer */
340 handler = ff_rtp_handler_find_by_id(
341 rtsp_st->sdp_payload_type, st->codec->codec_type);
342 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
343 }
344 }
1617ad97 345 /* put a default control url */
00eb13e0 346 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 347 sizeof(rtsp_st->control_url));
1617ad97
FB
348 break;
349 case 'a':
00eb13e0
AS
350 if (av_strstart(p, "control:", &p)) {
351 if (s->nb_streams == 0) {
352 if (!strncmp(p, "rtsp://", 7))
353 av_strlcpy(rt->control_uri, p,
354 sizeof(rt->control_uri));
355 } else {
0b6a7ff4
MS
356 char proto[32];
357 /* get the control url */
358 st = s->streams[s->nb_streams - 1];
359 rtsp_st = st->priv_data;
115329f1 360
0b6a7ff4
MS
361 /* XXX: may need to add full url resolution */
362 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
363 NULL, NULL, 0, p);
364 if (proto[0] == '\0') {
365 /* relative control URL */
366 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
367 av_strlcat(rtsp_st->control_url, "/",
368 sizeof(rtsp_st->control_url));
369 av_strlcat(rtsp_st->control_url, p,
370 sizeof(rtsp_st->control_url));
371 } else
372 av_strlcpy(rtsp_st->control_url, p,
373 sizeof(rtsp_st->control_url));
00eb13e0 374 }
83d14c85 375 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 376 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 377 get_word(buf1, sizeof(buf1), &p);
93ced3e8 378 payload_type = atoi(buf1);
83d14c85 379 st = s->streams[s->nb_streams - 1];
ff16f551 380 rtsp_st = st->priv_data;
86b6e387 381 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
382 } else if (av_strstart(p, "fmtp:", &p) ||
383 av_strstart(p, "framesize:", &p)) {
93ced3e8 384 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
385 // let dynamic protocol handlers have a stab at the line.
386 get_word(buf1, sizeof(buf1), &p);
387 payload_type = atoi(buf1);
c8965800
RB
388 for (i = 0; i < s->nb_streams; i++) {
389 st = s->streams[i];
d0deedcb 390 rtsp_st = st->priv_data;
c8965800
RB
391 if (rtsp_st->sdp_payload_type == payload_type &&
392 rtsp_st->dynamic_handler &&
393 rtsp_st->dynamic_handler->parse_sdp_a_line)
394 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
395 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 396 }
c8965800 397 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
398 int64_t start, end;
399
400 // this is so that seeking on a streamed file can work.
401 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
402 s->start_time = start;
403 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
404 s->duration = (end == AV_NOPTS_VALUE) ?
405 AV_NOPTS_VALUE : end - start;
119b4668
RB
406 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
407 if (atoi(p) == 1)
408 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
409 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
410 s->nb_streams > 0) {
411 st = s->streams[s->nb_streams - 1];
412 st->codec->sample_rate = atoi(p);
1a30d541
RB
413 } else {
414 if (rt->server_type == RTSP_SERVER_WMS)
415 ff_wms_parse_sdp_a_line(s, p);
416 if (s->nb_streams > 0) {
c4a3d032
RB
417 if (rt->server_type == RTSP_SERVER_REAL)
418 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
419
420 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
421 if (rtsp_st->dynamic_handler &&
422 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
423 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
424 s->nb_streams - 1,
c4a3d032 425 rtsp_st->dynamic_protocol_context, buf);
1a30d541 426 }
1617ad97
FB
427 }
428 break;
429 }
430}
431
a8475bbd
LB
432/**
433 * Parse the sdp description and allocate the rtp streams and the
434 * pollfd array used for udp ones.
435 */
436
0526c6f7 437int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 438{
a8475bbd 439 RTSPState *rt = s->priv_data;
1617ad97
FB
440 const char *p;
441 int letter;
9211bcdd
RB
442 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
443 * contain long SDP lines containing complete ASF Headers (several
444 * kB) or arrays of MDPR (RM stream descriptor) headers plus
445 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
446 * buffer is large.
447 *
afcea58c
JA
448 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
449 * in rtpdec_xiph.c. */
373afbaf 450 char buf[16384], *q;
93ced3e8 451 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 452
93ced3e8 453 memset(s1, 0, sizeof(SDPParseState));
1617ad97 454 p = content;
c8965800 455 for (;;) {
30619e6e 456 p += strspn(p, SPACE_CHARS);
1617ad97
FB
457 letter = *p;
458 if (letter == '\0')
459 break;
460 p++;
461 if (*p != '=')
462 goto next_line;
463 p++;
464 /* get the content */
465 q = buf;
b6892136 466 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
467 if ((q - buf) < sizeof(buf) - 1)
468 *q++ = *p;
469 p++;
470 }
471 *q = '\0';
93ced3e8 472 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
473 next_line:
474 while (*p != '\n' && *p != '\0')
475 p++;
476 if (*p == '\n')
477 p++;
478 }
a8475bbd
LB
479 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
480 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
481 return 0;
482}
44b70ce5 483#endif /* CONFIG_RTPDEC */
1617ad97 484
93e7490e
MS
485void ff_rtsp_undo_setup(AVFormatContext *s)
486{
487 RTSPState *rt = s->priv_data;
488 int i;
489
490 for (i = 0; i < rt->nb_rtsp_streams; i++) {
491 RTSPStream *rtsp_st = rt->rtsp_streams[i];
492 if (!rtsp_st)
493 continue;
494 if (rtsp_st->transport_priv) {
495 if (s->oformat) {
496 AVFormatContext *rtpctx = rtsp_st->transport_priv;
497 av_write_trailer(rtpctx);
498 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
499 uint8_t *ptr;
500 url_close_dyn_buf(rtpctx->pb, &ptr);
501 av_free(ptr);
502 } else {
503 url_fclose(rtpctx->pb);
504 }
505 av_metadata_free(&rtpctx->streams[0]->metadata);
506 av_metadata_free(&rtpctx->metadata);
507 av_free(rtpctx->streams[0]);
508 av_free(rtpctx);
509 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
510 ff_rdt_parse_close(rtsp_st->transport_priv);
511 else if (CONFIG_RTPDEC)
512 rtp_parse_close(rtsp_st->transport_priv);
513 }
514 rtsp_st->transport_priv = NULL;
515 if (rtsp_st->rtp_handle)
516 url_close(rtsp_st->rtp_handle);
517 rtsp_st->rtp_handle = NULL;
518 }
519}
520
1ced9da3 521/* close and free RTSP streams */
3307e6ea 522void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 523{
52aa4338 524 RTSPState *rt = s->priv_data;
1ced9da3
LA
525 int i;
526 RTSPStream *rtsp_st;
527
93e7490e 528 ff_rtsp_undo_setup(s);
c8965800 529 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
530 rtsp_st = rt->rtsp_streams[i];
531 if (rtsp_st) {
1ced9da3 532 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
533 rtsp_st->dynamic_handler->close(
534 rtsp_st->dynamic_protocol_context);
ea7f0807 535 av_free(rtsp_st);
1ced9da3
LA
536 }
537 }
538 av_free(rt->rtsp_streams);
539 if (rt->asf_ctx) {
540 av_close_input_stream (rt->asf_ctx);
541 rt->asf_ctx = NULL;
542 }
a8475bbd 543 av_free(rt->p);
96a7c975 544 av_free(rt->recvbuf);
1ced9da3
LA
545}
546
c8965800 547static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
548{
549 RTSPState *rt = s->priv_data;
550 AVStream *st = NULL;
551
552 /* open the RTP context */
553 if (rtsp_st->stream_index >= 0)
554 st = s->streams[rtsp_st->stream_index];
555 if (!st)
556 s->ctx_flags |= AVFMTCTX_NOHEADER;
557
44b70ce5 558 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
559 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
560 rtsp_st->rtp_handle,
561 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 562 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 563 rtsp_st->rtp_handle = NULL;
44b70ce5 564 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
565 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
566 rtsp_st->dynamic_protocol_context,
567 rtsp_st->dynamic_handler);
44b70ce5 568 else if (CONFIG_RTPDEC)
1ced9da3 569 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
570 rtsp_st->sdp_payload_type,
571 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
572 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
573
574 if (!rtsp_st->transport_priv) {
575 return AVERROR(ENOMEM);
44b70ce5 576 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 577 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
578 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
579 rtsp_st->dynamic_protocol_context,
580 rtsp_st->dynamic_handler);
581 }
582 }
583
584 return 0;
585}
586
6f5a3d0a 587#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
588static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
589{
590 const char *p;
591 int v;
592
593 p = *pp;
30619e6e 594 p += strspn(p, SPACE_CHARS);
1617ad97
FB
595 v = strtol(p, (char **)&p, 10);
596 if (*p == '-') {
597 p++;
598 *min_ptr = v;
599 v = strtol(p, (char **)&p, 10);
600 *max_ptr = v;
601 } else {
602 *min_ptr = v;
603 *max_ptr = v;
604 }
605 *pp = p;
606}
607
608/* XXX: only one transport specification is parsed */
a9e534d5 609static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
610{
611 char transport_protocol[16];
612 char profile[16];
613 char lower_transport[16];
614 char parameter[16];
615 RTSPTransportField *th;
616 char buf[256];
115329f1 617
1617ad97 618 reply->nb_transports = 0;
115329f1 619
c8965800 620 for (;;) {
30619e6e 621 p += strspn(p, SPACE_CHARS);
1617ad97
FB
622 if (*p == '\0')
623 break;
624
625 th = &reply->transports[reply->nb_transports];
626
115329f1 627 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 628 "/", &p);
e1502118 629 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
630 get_word_sep(profile, sizeof(profile), "/;,", &p);
631 lower_transport[0] = '\0';
632 /* rtp/avp/<protocol> */
633 if (*p == '/') {
7ecc634e
LB
634 get_word_sep(lower_transport, sizeof(lower_transport),
635 ";,", &p);
119b4668
RB
636 }
637 th->transport = RTSP_TRANSPORT_RTP;
638 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
639 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 640 /* x-pn-tng/<protocol> */
e1502118
LB
641 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
642 profile[0] = '\0';
119b4668 643 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 644 }
b6892136 645 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 646 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 647 else
90abbdba 648 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 649
1617ad97
FB
650 if (*p == ';')
651 p++;
652 /* get each parameter */
653 while (*p != '\0' && *p != ',') {
654 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
655 if (!strcmp(parameter, "port")) {
656 if (*p == '=') {
657 p++;
658 rtsp_parse_range(&th->port_min, &th->port_max, &p);
659 }
660 } else if (!strcmp(parameter, "client_port")) {
661 if (*p == '=') {
662 p++;
115329f1 663 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
664 &th->client_port_max, &p);
665 }
666 } else if (!strcmp(parameter, "server_port")) {
667 if (*p == '=') {
668 p++;
115329f1 669 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
670 &th->server_port_max, &p);
671 }
672 } else if (!strcmp(parameter, "interleaved")) {
673 if (*p == '=') {
674 p++;
115329f1 675 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
676 &th->interleaved_max, &p);
677 }
678 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
679 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
680 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
681 } else if (!strcmp(parameter, "ttl")) {
682 if (*p == '=') {
683 p++;
684 th->ttl = strtol(p, (char **)&p, 10);
685 }
686 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
687 if (*p == '=') {
688 p++;
689 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 690 get_sockaddr(buf, &th->destination);
1617ad97 691 }
619298a8
JW
692 } else if (!strcmp(parameter, "source")) {
693 if (*p == '=') {
694 p++;
695 get_word_sep(buf, sizeof(buf), ";,", &p);
696 av_strlcpy(th->source, buf, sizeof(th->source));
697 }
1617ad97 698 }
619298a8 699
1617ad97
FB
700 while (*p != ';' && *p != '\0' && *p != ',')
701 p++;
702 if (*p == ';')
703 p++;
704 }
705 if (*p == ',')
706 p++;
707
708 reply->nb_transports++;
709 }
710}
711
29db7c3a
MS
712static void handle_rtp_info(RTSPState *rt, const char *url,
713 uint32_t seq, uint32_t rtptime)
714{
715 int i;
716 if (!rtptime || !url[0])
717 return;
718 if (rt->transport != RTSP_TRANSPORT_RTP)
719 return;
720 for (i = 0; i < rt->nb_rtsp_streams; i++) {
721 RTSPStream *rtsp_st = rt->rtsp_streams[i];
722 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
723 if (!rtpctx)
724 continue;
725 if (!strcmp(rtsp_st->control_url, url)) {
726 rtpctx->base_timestamp = rtptime;
727 break;
728 }
729 }
730}
731
732static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
733{
734 int read = 0;
735 char key[20], value[1024], url[1024] = "";
736 uint32_t seq = 0, rtptime = 0;
737
738 for (;;) {
739 p += strspn(p, SPACE_CHARS);
740 if (!*p)
741 break;
742 get_word_sep(key, sizeof(key), "=", &p);
743 if (*p != '=')
744 break;
745 p++;
746 get_word_sep(value, sizeof(value), ";, ", &p);
747 read++;
748 if (!strcmp(key, "url"))
749 av_strlcpy(url, value, sizeof(url));
750 else if (!strcmp(key, "seq"))
751 seq = strtol(value, NULL, 10);
752 else if (!strcmp(key, "rtptime"))
753 rtptime = strtol(value, NULL, 10);
754 if (*p == ',') {
755 handle_rtp_info(rt, url, seq, rtptime);
756 url[0] = '\0';
757 seq = rtptime = 0;
758 read = 0;
759 }
760 if (*p)
761 p++;
762 }
763 if (read > 0)
764 handle_rtp_info(rt, url, seq, rtptime);
765}
766
2626308a 767void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 768 RTSPState *rt, const char *method)
1617ad97
FB
769{
770 const char *p;
771
772 /* NOTE: we do case independent match for broken servers */
773 p = buf;
f7d78f36 774 if (av_stristart(p, "Session:", &p)) {
30e79845 775 int t;
1617ad97 776 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
777 if (av_stristart(p, ";timeout=", &p) &&
778 (t = strtol(p, NULL, 10)) > 0) {
779 reply->timeout = t;
780 }
f7d78f36 781 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 782 reply->content_length = strtol(p, NULL, 10);
f7d78f36 783 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 784 rtsp_parse_transport(reply, p);
f7d78f36 785 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 786 reply->seq = strtol(p, NULL, 10);
f7d78f36 787 } else if (av_stristart(p, "Range:", &p)) {
31693e00 788 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 789 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 790 p += strspn(p, SPACE_CHARS);
30aa6aed 791 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 792 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 793 p += strspn(p, SPACE_CHARS);
7a86bafa 794 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
795 } else if (av_stristart(p, "Notice:", &p) ||
796 av_stristart(p, "X-Notice:", &p)) {
797 reply->notice = strtol(p, NULL, 10);
d243ba30 798 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 799 p += strspn(p, SPACE_CHARS);
d243ba30 800 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 801 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 802 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
803 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
804 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 805 p += strspn(p, SPACE_CHARS);
acc9ed14 806 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 807 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 808 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
809 if (method && !strcmp(method, "DESCRIBE"))
810 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
811 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
812 p += strspn(p, SPACE_CHARS);
813 if (method && !strcmp(method, "PLAY"))
814 rtsp_parse_rtp_info(rt, p);
1617ad97
FB
815 }
816}
817
b7b8fc34 818/* skip a RTP/TCP interleaved packet */
ec55edba 819void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
820{
821 RTSPState *rt = s->priv_data;
822 int ret, len, len1;
823 uint8_t buf[1024];
824
0e848977 825 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
826 if (ret != 3)
827 return;
80fb8234 828 len = AV_RB16(buf + 1);
67c9cd69 829
dfd2a005 830 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 831
b7b8fc34
FB
832 /* skip payload */
833 while (len > 0) {
834 len1 = len;
835 if (len1 > sizeof(buf))
836 len1 = sizeof(buf);
0e848977 837 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
838 if (ret != len1)
839 return;
840 len -= len1;
841 }
842}
1617ad97 843
3307e6ea 844int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 845 unsigned char **content_ptr,
3df54c6b 846 int return_on_interleaved_data, const char *method)
1617ad97
FB
847{
848 RTSPState *rt = s->priv_data;
849 char buf[4096], buf1[1024], *q;
850 unsigned char ch;
851 const char *p;
7e726132 852 int ret, content_length, line_count = 0;
1617ad97
FB
853 unsigned char *content = NULL;
854
d541a7d2 855 memset(reply, 0, sizeof(*reply));
1617ad97 856
1617ad97 857 /* parse reply (XXX: use buffers) */
1617ad97 858 rt->last_reply[0] = '\0';
c8965800 859 for (;;) {
1617ad97 860 q = buf;
c8965800 861 for (;;) {
0e848977 862 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 863#ifdef DEBUG_RTP_TCP
dfd2a005 864 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
865#endif
866 if (ret != 1)
2401660d 867 return AVERROR_EOF;
1617ad97
FB
868 if (ch == '\n')
869 break;
b7b8fc34
FB
870 if (ch == '$') {
871 /* XXX: only parse it if first char on line ? */
7e726132
RB
872 if (return_on_interleaved_data) {
873 return 1;
874 } else
ec55edba 875 ff_rtsp_skip_packet(s);
b7b8fc34 876 } else if (ch != '\r') {
1617ad97
FB
877 if ((q - buf) < sizeof(buf) - 1)
878 *q++ = ch;
879 }
880 }
881 *q = '\0';
67c9cd69 882
dfd2a005 883 av_dlog(s, "line='%s'\n", buf);
67c9cd69 884
1617ad97
FB
885 /* test if last line */
886 if (buf[0] == '\0')
887 break;
888 p = buf;
889 if (line_count == 0) {
890 /* get reply code */
891 get_word(buf1, sizeof(buf1), &p);
892 get_word(buf1, sizeof(buf1), &p);
893 reply->status_code = atoi(buf1);
d93fdcbf 894 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 895 } else {
77223c53 896 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
897 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
898 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
899 }
900 line_count++;
901 }
115329f1 902
1617ad97 903 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 904 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 905
1617ad97
FB
906 content_length = reply->content_length;
907 if (content_length > 0) {
908 /* leave some room for a trailing '\0' (useful for simple parsing) */
909 content = av_malloc(content_length + 1);
0e848977 910 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
911 content[content_length] = '\0';
912 }
913 if (content_ptr)
914 *content_ptr = content;
e2e2e7dd
AB
915 else
916 av_free(content);
7e726132 917
7ed8211b
LB
918 if (rt->seq != reply->seq) {
919 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
920 rt->seq, reply->seq);
921 }
922
fccb1770
RB
923 /* EOS */
924 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
925 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 926 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 927 rt->state = RTSP_STATE_IDLE;
c8965800 928 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 929 return AVERROR(EIO); /* data or server error */
c8965800 930 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
931 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
932 return AVERROR(EPERM);
933
7e726132 934 return 0;
1617ad97
FB
935}
936
57c4d01e
DEP
937/**
938 * Send a command to the RTSP server without waiting for the reply.
939 *
940 * @param s RTSP (de)muxer context
941 * @param method the method for the request
942 * @param url the target url for the request
943 * @param headers extra header lines to include in the request
944 * @param send_content if non-null, the data to send as request body content
945 * @param send_content_length the length of the send_content data, or 0 if
946 * send_content is null
947 *
948 * @return zero if success, nonzero otherwise
949 */
950static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
951 const char *method, const char *url,
952 const char *headers,
953 const unsigned char *send_content,
954 int send_content_length)
29b9f58b
RB
955{
956 RTSPState *rt = s->priv_data;
f5d33f52
JA
957 char buf[4096], *out_buf;
958 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 959
f5d33f52
JA
960 /* Add in RTSP headers */
961 out_buf = buf;
29b9f58b 962 rt->seq++;
b17d11c6
MS
963 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
964 if (headers)
965 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 966 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
967 if (rt->session_id[0] != '\0' && (!headers ||
968 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 969 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 970 }
aa8bf2fb
MS
971 if (rt->auth[0]) {
972 char *str = ff_http_auth_create_response(&rt->auth_state,
973 rt->auth, url, method);
974 if (str)
975 av_strlcat(buf, str, sizeof(buf));
976 av_free(str);
977 }
dfd017bf
MS
978 if (send_content_length > 0 && send_content)
979 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 980 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 981
f5d33f52
JA
982 /* base64 encode rtsp if tunneling */
983 if (rt->control_transport == RTSP_MODE_TUNNEL) {
984 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
985 out_buf = base64buf;
986 }
987
dfd2a005 988 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 989
f5d33f52
JA
990 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
991 if (send_content_length > 0 && send_content) {
992 if (rt->control_transport == RTSP_MODE_TUNNEL) {
993 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
994 "with content data not supported\n");
995 return AVERROR_PATCHWELCOME;
996 }
b8c2c41d 997 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 998 }
30e79845 999 rt->last_cmd_time = av_gettime();
d0382374
JA
1000
1001 return 0;
30e79845
RB
1002}
1003
d0382374 1004int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1005 const char *url, const char *headers)
dfd017bf 1006{
d0382374 1007 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1008}
1009
d0382374 1010int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1011 const char *headers, RTSPMessageHeader *reply,
1012 unsigned char **content_ptr)
30e79845 1013{
d0382374 1014 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1015 content_ptr, NULL, 0);
29b9f58b
RB
1016}
1017
d0382374 1018int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1019 const char *method, const char *url,
1020 const char *header,
1021 RTSPMessageHeader *reply,
1022 unsigned char **content_ptr,
1023 const unsigned char *send_content,
1024 int send_content_length)
dfd017bf 1025{
30af0779
MS
1026 RTSPState *rt = s->priv_data;
1027 HTTPAuthType cur_auth_type;
d0382374 1028 int ret;
30af0779
MS
1029
1030retry:
1031 cur_auth_type = rt->auth_state.auth_type;
d0382374 1032 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1033 send_content,
1034 send_content_length)))
d0382374 1035 return ret;
dfd017bf 1036
3df54c6b 1037 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1038 return ret;
30af0779
MS
1039
1040 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1041 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1042 goto retry;
d0382374 1043
bf55cf19 1044 if (reply->status_code > 400){
d93fdcbf 1045 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1046 method,
d93fdcbf
LB
1047 reply->status_code,
1048 reply->reason);
bf55cf19
LB
1049 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1050 }
1051
d0382374 1052 return 0;
dfd017bf
MS
1053}
1054
53620bba 1055/**
32e543f8 1056 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 1057 */
fef5649a 1058int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1059 int lower_transport, const char *real_challenge)
1617ad97
FB
1060{
1061 RTSPState *rt = s->priv_data;
f830c9a4 1062 int rtx, j, i, err, interleave = 0;
1617ad97 1063 RTSPStream *rtsp_st;
a9e534d5 1064 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1065 char cmd[2048];
e9dea59f
RB
1066 const char *trans_pref;
1067
119b4668 1068 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1069 trans_pref = "x-pn-tng";
1070 else
1071 trans_pref = "RTP/AVP";
115329f1 1072
30e79845
RB
1073 /* default timeout: 1 minute */
1074 rt->timeout = 60;
1075
1617ad97
FB
1076 /* for each stream, make the setup request */
1077 /* XXX: we assume the same server is used for the control of each
c8965800 1078 * RTSP stream */
d1ccf0e0 1079
c8965800 1080 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1081 char transport[2048];
1082
f830c9a4
RB
1083 /**
1084 * WMS serves all UDP data over a single connection, the RTX, which
1085 * isn't necessarily the first in the SDP but has to be the first
1086 * to be set up, else the second/third SETUP will fail with a 461.
1087 */
1088 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1089 rt->server_type == RTSP_SERVER_WMS) {
1090 if (i == 0) {
1091 /* rtx first */
1092 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1093 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1094 if (len >= 4 &&
c8965800
RB
1095 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1096 "/rtx"))
f830c9a4
RB
1097 break;
1098 }
1099 if (rtx == rt->nb_rtsp_streams)
1100 return -1; /* no RTX found */
1101 rtsp_st = rt->rtsp_streams[rtx];
1102 } else
1103 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1104 } else
2fea9650 1105 rtsp_st = rt->rtsp_streams[i];
1617ad97 1106
1617ad97 1107 /* RTP/UDP */
90abbdba 1108 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1109 char buf[256];
85fb7b34 1110
f830c9a4
RB
1111 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1112 port = reply->transports[0].client_port_min;
1113 goto have_port;
1114 }
1115
85fb7b34 1116 /* first try in specified port range */
d1ccf0e0 1117 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1118 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1119 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1120 "?localport=%d", j);
c8965800
RB
1121 /* we will use two ports per rtp stream (rtp and rtcp) */
1122 j += 2;
1123 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1124 goto rtp_opened;
1125 }
1617ad97 1126 }
85fb7b34 1127
c8965800
RB
1128#if 0
1129 /* then try on any port */
1130 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1131 err = AVERROR_INVALIDDATA;
1132 goto fail;
1133 }
a3b058b7
MS
1134#else
1135 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1136 err = AVERROR(EIO);
1137 goto fail;
c8965800 1138#endif
85fb7b34
FB
1139
1140 rtp_opened:
67f34aaa 1141 port = rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1142 have_port:
0ad306bc 1143 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1144 "%s/UDP;", trans_pref);
1145 if (rt->server_type != RTSP_SERVER_REAL)
1146 av_strlcat(transport, "unicast;", sizeof(transport));
1147 av_strlcatf(transport, sizeof(transport),
1148 "client_port=%d", port);
f830c9a4
RB
1149 if (rt->transport == RTSP_TRANSPORT_RTP &&
1150 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1151 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1152 }
1153
1154 /* RTP/TCP */
90abbdba 1155 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1156 /** For WMS streams, the application streams are only used for
1157 * UDP. When trying to set it up for TCP streams, the server
1158 * will return an error. Therefore, we skip those streams. */
1159 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1160 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1161 AVMEDIA_TYPE_DATA)
090438cc 1162 continue;
0ad306bc 1163 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1164 "%s/TCP;", trans_pref);
1165 if (rt->server_type == RTSP_SERVER_WMS)
1166 av_strlcat(transport, "unicast;", sizeof(transport));
1167 av_strlcatf(transport, sizeof(transport),
1168 "interleaved=%d-%d",
1169 interleave, interleave + 1);
1170 interleave += 2;
1617ad97
FB
1171 }
1172
90abbdba 1173 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1174 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1175 "%s/UDP;multicast", trans_pref);
1617ad97 1176 }
69adcc4f
MS
1177 if (s->oformat) {
1178 av_strlcat(transport, ";mode=receive", sizeof(transport));
1179 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1180 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1181 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1182 snprintf(cmd, sizeof(cmd),
b6892136 1183 "Transport: %s\r\n",
b17d11c6 1184 transport);
44b70ce5 1185 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1186 char real_res[41], real_csum[9];
1187 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1188 real_challenge);
1189 av_strlcatf(cmd, sizeof(cmd),
1190 "If-Match: %s\r\n"
1191 "RealChallenge2: %s, sd=%s\r\n",
1192 rt->session_id, real_res, real_csum);
1193 }
b17d11c6 1194 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1195 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1196 err = 1;
1197 goto fail;
7e6ca34f
RB
1198 } else if (reply->status_code != RTSP_STATUS_OK ||
1199 reply->nb_transports != 1) {
1617ad97
FB
1200 err = AVERROR_INVALIDDATA;
1201 goto fail;
1202 }
1203
1204 /* XXX: same protocol for all streams is required */
1205 if (i > 0) {
119b4668
RB
1206 if (reply->transports[0].lower_transport != rt->lower_transport ||
1207 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1208 err = AVERROR_INVALIDDATA;
1209 goto fail;
1210 }
1211 } else {
90abbdba 1212 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1213 rt->transport = reply->transports[0].transport;
1617ad97
FB
1214 }
1215
8c579c1c
MS
1216 /* Fail if the server responded with another lower transport mode
1217 * than what we requested. */
1218 if (reply->transports[0].lower_transport != lower_transport) {
1219 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1220 err = AVERROR_INVALIDDATA;
1221 goto fail;
1617ad97
FB
1222 }
1223
90abbdba
RB
1224 switch(reply->transports[0].lower_transport) {
1225 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1226 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1227 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1228 break;
115329f1 1229
c8965800 1230 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1231 char url[1024], options[30] = "";
c8965800 1232
a92c30d7
MS
1233 if (rt->filter_source)
1234 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1235 /* Use source address if specified */
1236 if (reply->transports[0].source[0]) {
1237 ff_url_join(url, sizeof(url), "rtp", NULL,
1238 reply->transports[0].source,
a92c30d7 1239 reply->transports[0].server_port_min, options);
619298a8 1240 } else {
7bac991f 1241 ff_url_join(url, sizeof(url), "rtp", NULL, host,
a92c30d7 1242 reply->transports[0].server_port_min, options);
619298a8 1243 }
c8965800
RB
1244 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1245 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1246 err = AVERROR_INVALIDDATA;
1247 goto fail;
1617ad97 1248 }
9c8fa20d
MS
1249 /* Try to initialize the connection state in a
1250 * potential NAT router by sending dummy packets.
1251 * RTP/RTCP dummy packets are used for RDT, too.
1252 */
44b70ce5
MS
1253 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1254 CONFIG_RTPDEC)
9c8fa20d 1255 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1256 break;
c8965800
RB
1257 }
1258 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1259 char url[1024], namebuf[50];
1260 struct sockaddr_storage addr;
c8965800
RB
1261 int port, ttl;
1262
7934b15d
MS
1263 if (reply->transports[0].destination.ss_family) {
1264 addr = reply->transports[0].destination;
c8965800
RB
1265 port = reply->transports[0].port_min;
1266 ttl = reply->transports[0].ttl;
1267 } else {
7934b15d 1268 addr = rtsp_st->sdp_ip;
c8965800
RB
1269 port = rtsp_st->sdp_port;
1270 ttl = rtsp_st->sdp_ttl;
1271 }
7934b15d
MS
1272 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1273 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1274 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1275 port, "?ttl=%d", ttl);
c8965800
RB
1276 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1277 err = AVERROR_INVALIDDATA;
1278 goto fail;
1617ad97
FB
1279 }
1280 break;
1281 }
c8965800 1282 }
d1ccf0e0 1283
ee0cb67f 1284 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1285 goto fail;
1617ad97
FB
1286 }
1287
30e79845
RB
1288 if (reply->timeout > 0)
1289 rt->timeout = reply->timeout;
1290
2e889ae4 1291 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1292 rt->need_subscription = 1;
1293
53620bba
RB
1294 return 0;
1295
1296fail:
aeb2de1c 1297 ff_rtsp_undo_setup(s);
53620bba
RB
1298 return err;
1299}
1300
b8c2c41d
JA
1301void ff_rtsp_close_connections(AVFormatContext *s)
1302{
1303 RTSPState *rt = s->priv_data;
1304 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1305 url_close(rt->rtsp_hd);
6217b645 1306 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1307}
1308
3307e6ea 1309int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1310{
1311 RTSPState *rt = s->priv_data;
921da217
LB
1312 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1313 char *option_list, *option, *filename;
03f8fc08 1314 int port, err, tcp_fd;
354b7573 1315 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1316 int lower_transport_mask = 0;
2762a7a2 1317 char real_challenge[64] = "";
03f8fc08
MS
1318 struct sockaddr_storage peer;
1319 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1320
1321 if (!ff_network_init())
1322 return AVERROR(EIO);
c8965800 1323redirect:
f5d33f52 1324 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1325 /* extract hostname and port */
f3bfe388 1326 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1327 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1328 if (*auth) {
aa8bf2fb 1329 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1330 }
53620bba
RB
1331 if (port < 0)
1332 port = RTSP_DEFAULT_PORT;
1333
1334 /* search for options */
602eb779 1335 option_list = strrchr(path, '?');
53620bba 1336 if (option_list) {
2a21adf9
MS
1337 /* Strip out the RTSP specific options, write out the rest of
1338 * the options back into the same string. */
1339 filename = option_list;
c8965800 1340 while (option_list) {
53620bba 1341 /* move the option pointer */
921da217 1342 option = ++option_list;
53620bba
RB
1343 option_list = strchr(option_list, '&');
1344 if (option_list)
921da217
LB
1345 *option_list = 0;
1346
53620bba 1347 /* handle the options */
c8965800 1348 if (!strcmp(option, "udp")) {
7a033e08 1349 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1350 } else if (!strcmp(option, "multicast")) {
7a033e08 1351 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1352 } else if (!strcmp(option, "tcp")) {
7a033e08 1353 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1354 } else if(!strcmp(option, "http")) {
1355 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1356 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7
MS
1357 } else if (!strcmp(option, "filter_src")) {
1358 rt->filter_source = 1;
c8965800 1359 } else {
2a21adf9
MS
1360 /* Write options back into the buffer, using memmove instead
1361 * of strcpy since the strings may overlap. */
1362 int len = strlen(option);
1363 memmove(++filename, option, len);
1364 filename += len;
921da217
LB
1365 if (option_list) *filename = '&';
1366 }
53620bba 1367 }
921da217 1368 *filename = 0;
53620bba
RB
1369 }
1370
90abbdba 1371 if (!lower_transport_mask)
2a1d51c5 1372 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1373
3e24c770 1374 if (s->oformat) {
b7dc88fc
MS
1375 /* Only UDP or TCP - UDP multicast isn't supported. */
1376 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1377 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1378 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1379 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1380 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1381 err = AVERROR(EINVAL);
1382 goto fail;
1383 }
1384 }
1385
4bc5cc23
MS
1386 /* Construct the URI used in request; this is similar to s->filename,
1387 * but with authentication credentials removed and RTSP specific options
1388 * stripped out. */
1389 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1390 host, port, "%s", path);
1391
f5d33f52
JA
1392 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1393 /* set up initial handshake for tunneling */
1394 char httpname[1024];
1395 char sessioncookie[17];
1396 char headers[1024];
1397
10ed37b5 1398 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1399 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1400 av_get_random_seed(), av_get_random_seed());
1401
1402 /* GET requests */
9290f15d 1403 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1404 err = AVERROR(EIO);
1405 goto fail;
1406 }
1407
1408 /* generate GET headers */
1409 snprintf(headers, sizeof(headers),
1410 "x-sessioncookie: %s\r\n"
1411 "Accept: application/x-rtsp-tunnelled\r\n"
1412 "Pragma: no-cache\r\n"
1413 "Cache-Control: no-cache\r\n",
1414 sessioncookie);
00e4a1f4 1415 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1416
1417 /* complete the connection */
9290f15d 1418 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1419 err = AVERROR(EIO);
1420 goto fail;
1421 }
1422
1423 /* POST requests */
9290f15d 1424 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1425 err = AVERROR(EIO);
1426 goto fail;
1427 }
1428
1429 /* generate POST headers */
1430 snprintf(headers, sizeof(headers),
1431 "x-sessioncookie: %s\r\n"
1432 "Content-Type: application/x-rtsp-tunnelled\r\n"
1433 "Pragma: no-cache\r\n"
1434 "Cache-Control: no-cache\r\n"
1435 "Content-Length: 32767\r\n"
1436 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1437 sessioncookie);
00e4a1f4
JA
1438 ff_http_set_headers(rt->rtsp_hd_out, headers);
1439 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1440
a8ead332
MS
1441 /* Initialize the authentication state for the POST session. The HTTP
1442 * protocol implementation doesn't properly handle multi-pass
1443 * authentication for POST requests, since it would require one of
1444 * the following:
1445 * - implementing Expect: 100-continue, which many HTTP servers
1446 * don't support anyway, even less the RTSP servers that do HTTP
1447 * tunneling
1448 * - sending the whole POST data until getting a 401 reply specifying
1449 * what authentication method to use, then resending all that data
1450 * - waiting for potential 401 replies directly after sending the
1451 * POST header (waiting for some unspecified time)
1452 * Therefore, we copy the full auth state, which works for both basic
1453 * and digest. (For digest, we would have to synchronize the nonce
1454 * count variable between the two sessions, if we'd do more requests
1455 * with the original session, though.)
1456 */
1457 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1458
9290f15d
MS
1459 /* complete the connection */
1460 if (url_connect(rt->rtsp_hd_out)) {
1461 err = AVERROR(EIO);
1462 goto fail;
1463 }
f5d33f52 1464 } else {
48e77473 1465 /* open the tcp connection */
41874d0a 1466 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1467 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1468 err = AVERROR(EIO);
1469 goto fail;
1470 }
00e4a1f4 1471 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1472 }
53620bba
RB
1473 rt->seq = 0;
1474
00e4a1f4 1475 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1476 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1477 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1478 NULL, 0, NI_NUMERICHOST);
1479 }
1480
c8965800
RB
1481 /* request options supported by the server; this also detects server
1482 * type */
1cf151e9 1483 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1484 cmd[0] = 0;
2e889ae4 1485 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1486 av_strlcat(cmd,
1487 /**
1488 * The following entries are required for proper
1489 * streaming from a Realmedia server. They are
1490 * interdependent in some way although we currently
1491 * don't quite understand how. Values were copied
1492 * from mplayer SVN r23589.
1493 * @param CompanyID is a 16-byte ID in base64
1494 * @param ClientChallenge is a 16-byte ID in hex
1495 */
1496 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1497 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1498 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1499 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1500 sizeof(cmd));
b17d11c6 1501 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1502 if (reply->status_code != RTSP_STATUS_OK) {
1503 err = AVERROR_INVALIDDATA;
1504 goto fail;
1505 }
1506
1507 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1508 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1509 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1510 continue;
7a86bafa
RB
1511 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1512 rt->server_type = RTSP_SERVER_WMS;
c8965800 1513 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1514 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1515 break;
1516 }
1517
44b70ce5 1518 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1519 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1520 else if (CONFIG_RTSP_MUXER)
c2688f3a 1521 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1522 if (err)
53620bba 1523 goto fail;
53620bba 1524
8a8754d8 1525 do {
c8965800
RB
1526 int lower_transport = ff_log2_tab[lower_transport_mask &
1527 ~(lower_transport_mask - 1)];
8a8754d8 1528
fef5649a 1529 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1530 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1531 real_challenge : NULL);
8a8754d8 1532 if (err < 0)
7e6ca34f 1533 goto fail;
90abbdba
RB
1534 lower_transport_mask &= ~(1 << lower_transport);
1535 if (lower_transport_mask == 0 && err == 1) {
adef229e 1536 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1537 goto fail;
1538 }
1539 } while (err);
53620bba 1540
2762a7a2
MS
1541 rt->lower_transport_mask = lower_transport_mask;
1542 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1543 rt->state = RTSP_STATE_IDLE;
c8965800 1544 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1545 return 0;
1546 fail:
3307e6ea 1547 ff_rtsp_close_streams(s);
b8c2c41d 1548 ff_rtsp_close_connections(s);
35cfd646 1549 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1550 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1551 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1552 reply->status_code,
1553 s->filename);
1554 goto redirect;
1555 }
57b5555c 1556 ff_network_close();
1617ad97
FB
1557 return err;
1558}
2e802e38 1559#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1560
44b70ce5 1561#if CONFIG_RTPDEC
0e59034e 1562static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1563 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1564{
1565 RTSPState *rt = s->priv_data;
1566 RTSPStream *rtsp_st;
a8475bbd
LB
1567 int n, i, ret, tcp_fd, timeout_cnt = 0;
1568 int max_p = 0;
1569 struct pollfd *p = rt->p;
0e59034e 1570
c8965800 1571 for (;;) {
0e59034e
RB
1572 if (url_interrupt_cb())
1573 return AVERROR(EINTR);
321259c1
MS
1574 if (wait_end && wait_end - av_gettime() < 0)
1575 return AVERROR(EAGAIN);
a8475bbd 1576 max_p = 0;
0e59034e 1577 if (rt->rtsp_hd) {
a8475bbd
LB
1578 tcp_fd = url_get_file_handle(rt->rtsp_hd);
1579 p[max_p].fd = tcp_fd;
1580 p[max_p++].events = POLLIN;
0e59034e 1581 } else {
0e59034e
RB
1582 tcp_fd = -1;
1583 }
c8965800 1584 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1585 rtsp_st = rt->rtsp_streams[i];
1586 if (rtsp_st->rtp_handle) {
a8475bbd
LB
1587 p[max_p].fd = url_get_file_handle(rtsp_st->rtp_handle);
1588 p[max_p++].events = POLLIN;
1589 p[max_p].fd = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1590 p[max_p++].events = POLLIN;
0e59034e
RB
1591 }
1592 }
a8475bbd 1593 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1594 if (n > 0) {
a8475bbd 1595 int j = 1 - (tcp_fd == -1);
9cba6f5f 1596 timeout_cnt = 0;
c8965800 1597 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1598 rtsp_st = rt->rtsp_streams[i];
1599 if (rtsp_st->rtp_handle) {
a8475bbd 1600 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
0e59034e
RB
1601 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1602 if (ret > 0) {
1603 *prtsp_st = rtsp_st;
1604 return ret;
1605 }
1606 }
a8475bbd 1607 j+=2;
0e59034e
RB
1608 }
1609 }
5fe8021a 1610#if CONFIG_RTSP_DEMUXER
a8475bbd 1611 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1612 RTSPMessageHeader reply;
1613
3df54c6b 1614 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1615 if (ret < 0)
1616 return ret;
0e59034e 1617 /* XXX: parse message */
c02fd3d2 1618 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1619 return 0;
1620 }
5fe8021a 1621#endif
9cba6f5f 1622 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1623 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1624 } else if (n < 0 && errno != EINTR)
1625 return AVERROR(errno);
0e59034e
RB
1626 }
1627}
1628
0526c6f7 1629int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1630{
1631 RTSPState *rt = s->priv_data;
1632 int ret, len;
321259c1
MS
1633 RTSPStream *rtsp_st, *first_queue_st = NULL;
1634 int64_t wait_end = 0;
0e59034e 1635
b20359f5
JA
1636 if (rt->nb_byes == rt->nb_rtsp_streams)
1637 return AVERROR_EOF;
1638
0e59034e
RB
1639 /* get next frames from the same RTP packet */
1640 if (rt->cur_transport_priv) {
c8965800 1641 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1642 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1643 } else
0e59034e
RB
1644 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1645 if (ret == 0) {
1646 rt->cur_transport_priv = NULL;
1647 return 0;
1648 } else if (ret == 1) {
1649 return 0;
c8965800 1650 } else
0e59034e 1651 rt->cur_transport_priv = NULL;
0e59034e
RB
1652 }
1653
321259c1
MS
1654 if (rt->transport == RTSP_TRANSPORT_RTP) {
1655 int i;
1656 int64_t first_queue_time = 0;
1657 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1658 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1659 int64_t queue_time;
1660 if (!rtpctx)
1661 continue;
1662 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1663 if (queue_time && (queue_time - first_queue_time < 0 ||
1664 !first_queue_time)) {
1665 first_queue_time = queue_time;
1666 first_queue_st = rt->rtsp_streams[i];
1667 }
1668 }
1669 if (first_queue_time)
1670 wait_end = first_queue_time + s->max_delay;
1671 }
1672
0e59034e
RB
1673 /* read next RTP packet */
1674 redo:
96a7c975
MS
1675 if (!rt->recvbuf) {
1676 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1677 if (!rt->recvbuf)
1678 return AVERROR(ENOMEM);
1679 }
1680
0e59034e
RB
1681 switch(rt->lower_transport) {
1682 default:
5fe8021a 1683#if CONFIG_RTSP_DEMUXER
0e59034e 1684 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1685 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1686 break;
5fe8021a 1687#endif
0e59034e
RB
1688 case RTSP_LOWER_TRANSPORT_UDP:
1689 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1690 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
0e59034e
RB
1691 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1692 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1693 break;
1694 }
321259c1
MS
1695 if (len == AVERROR(EAGAIN) && first_queue_st &&
1696 rt->transport == RTSP_TRANSPORT_RTP) {
1697 rtsp_st = first_queue_st;
1698 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1699 goto end;
1700 }
0e59034e
RB
1701 if (len < 0)
1702 return len;
1703 if (len == 0)
1704 return AVERROR_EOF;
c8965800 1705 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1706 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1707 } else {
ad4ad27f 1708 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1709 if (ret < 0) {
1710 /* Either bad packet, or a RTCP packet. Check if the
1711 * first_rtcp_ntp_time field was initialized. */
1712 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1713 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1714 /* first_rtcp_ntp_time has been initialized for this stream,
1715 * copy the same value to all other uninitialized streams,
1716 * in order to map their timestamp origin to the same ntp time
1717 * as this one. */
1718 int i;
3a1cdcc7
MS
1719 AVStream *st = NULL;
1720 if (rtsp_st->stream_index >= 0)
1721 st = s->streams[rtsp_st->stream_index];
2cab6b48 1722 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1723 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1724 AVStream *st2 = NULL;
1725 if (rt->rtsp_streams[i]->stream_index >= 0)
1726 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1727 if (rtpctx2 && st && st2 &&
1728 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1729 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1730 rtpctx2->rtcp_ts_offset = av_rescale_q(
1731 rtpctx->rtcp_ts_offset, st->time_base,
1732 st2->time_base);
1733 }
2cab6b48
MS
1734 }
1735 }
b20359f5
JA
1736 if (ret == -RTCP_BYE) {
1737 rt->nb_byes++;
1738
1739 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1740 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1741
1742 if (rt->nb_byes == rt->nb_rtsp_streams)
1743 return AVERROR_EOF;
1744 }
2cab6b48
MS
1745 }
1746 }
321259c1 1747end:
0e59034e
RB
1748 if (ret < 0)
1749 goto redo;
c8965800 1750 if (ret == 1)
0e59034e
RB
1751 /* more packets may follow, so we save the RTP context */
1752 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1753
1754 return ret;
1755}
44b70ce5 1756#endif /* CONFIG_RTPDEC */
0e59034e 1757
44b70ce5 1758#if CONFIG_SDP_DEMUXER
cb1fdc61 1759static int sdp_probe(AVProbeData *p1)
93ced3e8 1760{
0e1ceacd 1761 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1762
3fbd12d1 1763 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1764 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1765 if (p + sizeof("c=IN IP") - 1 < p_end &&
1766 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1767 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1768
c8965800 1769 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1770 if (++p >= p_end)
cb1fdc61 1771 break;
cb1fdc61
FB
1772 if (*p == '\r')
1773 p++;
1774 }
93ced3e8
FB
1775 return 0;
1776}
1777
c8965800 1778static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1779{
8b1ab7bf 1780 RTSPState *rt = s->priv_data;
93ced3e8
FB
1781 RTSPStream *rtsp_st;
1782 int size, i, err;
1783 char *content;
1784 char url[1024];
1785
57b5555c
MS
1786 if (!ff_network_init())
1787 return AVERROR(EIO);
1788
93ced3e8
FB
1789 /* read the whole sdp file */
1790 /* XXX: better loading */
1791 content = av_malloc(SDP_MAX_SIZE);
899681cd 1792 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1793 if (size <= 0) {
1794 av_free(content);
1795 return AVERROR_INVALIDDATA;
1796 }
1797 content[size] ='\0';
1798
f81c7ac7 1799 err = ff_sdp_parse(s, content);
93ced3e8 1800 av_free(content);
f81c7ac7 1801 if (err) goto fail;
93ced3e8
FB
1802
1803 /* open each RTP stream */
c8965800 1804 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1805 char namebuf[50];
8b1ab7bf 1806 rtsp_st = rt->rtsp_streams[i];
115329f1 1807
3fbd12d1
MS
1808 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1809 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1810 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1811 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1812 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1813 rtsp_st->sdp_ttl);
dbf30963 1814 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1815 err = AVERROR_INVALIDDATA;
1816 goto fail;
1817 }
ee0cb67f 1818 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1819 goto fail;
93ced3e8
FB
1820 }
1821 return 0;
c8965800 1822fail:
3307e6ea 1823 ff_rtsp_close_streams(s);
57b5555c 1824 ff_network_close();
93ced3e8
FB
1825 return err;
1826}
1827
93ced3e8
FB
1828static int sdp_read_close(AVFormatContext *s)
1829{
3307e6ea 1830 ff_rtsp_close_streams(s);
57b5555c 1831 ff_network_close();
93ced3e8
FB
1832 return 0;
1833}
1834
c6610a21 1835AVInputFormat ff_sdp_demuxer = {
93ced3e8 1836 "sdp",
bde15e74 1837 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1838 sizeof(RTSPState),
1839 sdp_probe,
1840 sdp_read_header,
0526c6f7 1841 ff_rtsp_fetch_packet,
93ced3e8
FB
1842 sdp_read_close,
1843};
44b70ce5 1844#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1845
44b70ce5 1846#if CONFIG_RTP_DEMUXER
44594cc7
MS
1847static int rtp_probe(AVProbeData *p)
1848{
1849 if (av_strstart(p->filename, "rtp:", NULL))
1850 return AVPROBE_SCORE_MAX;
1851 return 0;
1852}
1853
1854static int rtp_read_header(AVFormatContext *s,
1855 AVFormatParameters *ap)
1856{
1857 uint8_t recvbuf[1500];
1858 char host[500], sdp[500];
1859 int ret, port;
1860 URLContext* in = NULL;
1861 int payload_type;
1862 AVCodecContext codec;
1863 struct sockaddr_storage addr;
1864 ByteIOContext pb;
1865 socklen_t addrlen = sizeof(addr);
1866
1867 if (!ff_network_init())
1868 return AVERROR(EIO);
1869
1870 ret = url_open(&in, s->filename, URL_RDONLY);
1871 if (ret)
1872 goto fail;
1873
1874 while (1) {
1875 ret = url_read(in, recvbuf, sizeof(recvbuf));
1876 if (ret == AVERROR(EAGAIN))
1877 continue;
1878 if (ret < 0)
1879 goto fail;
1880 if (ret < 12) {
1881 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1882 continue;
1883 }
1884
1885 if ((recvbuf[0] & 0xc0) != 0x80) {
1886 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1887 "received\n");
1888 continue;
1889 }
1890
1891 payload_type = recvbuf[1] & 0x7f;
1892 break;
1893 }
1894 getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
1895 url_close(in);
1896 in = NULL;
1897
1898 memset(&codec, 0, sizeof(codec));
1899 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1900 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1901 "without an SDP file describing it\n",
1902 payload_type);
1903 goto fail;
1904 }
1905 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1906 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1907 "properly you need an SDP file "
1908 "describing it\n");
1909 }
1910
1911 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1912 NULL, 0, s->filename);
1913
1914 snprintf(sdp, sizeof(sdp),
1915 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1916 addr.ss_family == AF_INET ? 4 : 6, host,
1917 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1918 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1919 port, payload_type);
1920 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1921
1922 init_put_byte(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
1923 s->pb = &pb;
1924
1925 /* sdp_read_header initializes this again */
1926 ff_network_close();
1927
1928 ret = sdp_read_header(s, ap);
1929 s->pb = NULL;
1930 return ret;
1931
1932fail:
1933 if (in)
1934 url_close(in);
1935 ff_network_close();
1936 return ret;
1937}
1938
c6610a21 1939AVInputFormat ff_rtp_demuxer = {
44594cc7
MS
1940 "rtp",
1941 NULL_IF_CONFIG_SMALL("RTP input format"),
1942 sizeof(RTSPState),
1943 rtp_probe,
1944 rtp_read_header,
0526c6f7 1945 ff_rtsp_fetch_packet,
44594cc7
MS
1946 sdp_read_close,
1947 .flags = AVFMT_NOFILE,
1948};
44b70ce5 1949#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1950