udp: Allow specifying the connect option in udp_set_remote_url, too
[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>
b250f9c6 29#if HAVE_SYS_SELECT_H
933bd8e2 30#include <sys/select.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
c2bfd816 47/* Timeout values for socket select, in ms,
9cba6f5f
SG
48 * and read_packet(), in seconds */
49#define SELECT_TIMEOUT_MS 100
50#define READ_PACKET_TIMEOUT_S 10
51#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / SELECT_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
67c9cd69 250 dprintf(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
0526c6f7 432int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
433{
434 const char *p;
435 int letter;
9211bcdd
RB
436 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
437 * contain long SDP lines containing complete ASF Headers (several
438 * kB) or arrays of MDPR (RM stream descriptor) headers plus
439 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
440 * buffer is large.
441 *
afcea58c
JA
442 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
443 * in rtpdec_xiph.c. */
373afbaf 444 char buf[16384], *q;
93ced3e8 445 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 446
93ced3e8 447 memset(s1, 0, sizeof(SDPParseState));
1617ad97 448 p = content;
c8965800 449 for (;;) {
30619e6e 450 p += strspn(p, SPACE_CHARS);
1617ad97
FB
451 letter = *p;
452 if (letter == '\0')
453 break;
454 p++;
455 if (*p != '=')
456 goto next_line;
457 p++;
458 /* get the content */
459 q = buf;
b6892136 460 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
461 if ((q - buf) < sizeof(buf) - 1)
462 *q++ = *p;
463 p++;
464 }
465 *q = '\0';
93ced3e8 466 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
467 next_line:
468 while (*p != '\n' && *p != '\0')
469 p++;
470 if (*p == '\n')
471 p++;
472 }
473 return 0;
474}
44b70ce5 475#endif /* CONFIG_RTPDEC */
1617ad97 476
1ced9da3 477/* close and free RTSP streams */
3307e6ea 478void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 479{
52aa4338 480 RTSPState *rt = s->priv_data;
1ced9da3
LA
481 int i;
482 RTSPStream *rtsp_st;
483
c8965800 484 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
485 rtsp_st = rt->rtsp_streams[i];
486 if (rtsp_st) {
487 if (rtsp_st->transport_priv) {
fd450a51
MS
488 if (s->oformat) {
489 AVFormatContext *rtpctx = rtsp_st->transport_priv;
490 av_write_trailer(rtpctx);
b7dc88fc
MS
491 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
492 uint8_t *ptr;
493 url_close_dyn_buf(rtpctx->pb, &ptr);
494 av_free(ptr);
495 } else {
685e76b5 496 url_fclose(rtpctx->pb);
b7dc88fc 497 }
f86f6656
MS
498 av_metadata_free(&rtpctx->streams[0]->metadata);
499 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
500 av_free(rtpctx->streams[0]);
501 av_free(rtpctx);
44b70ce5 502 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3 503 ff_rdt_parse_close(rtsp_st->transport_priv);
44b70ce5 504 else if (CONFIG_RTPDEC)
1ced9da3
LA
505 rtp_parse_close(rtsp_st->transport_priv);
506 }
507 if (rtsp_st->rtp_handle)
508 url_close(rtsp_st->rtp_handle);
509 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
510 rtsp_st->dynamic_handler->close(
511 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
512 }
513 }
514 av_free(rt->rtsp_streams);
515 if (rt->asf_ctx) {
516 av_close_input_stream (rt->asf_ctx);
517 rt->asf_ctx = NULL;
518 }
96a7c975 519 av_free(rt->recvbuf);
1ced9da3
LA
520}
521
c8965800 522static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
523{
524 RTSPState *rt = s->priv_data;
525 AVStream *st = NULL;
526
527 /* open the RTP context */
528 if (rtsp_st->stream_index >= 0)
529 st = s->streams[rtsp_st->stream_index];
530 if (!st)
531 s->ctx_flags |= AVFMTCTX_NOHEADER;
532
44b70ce5 533 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
534 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
535 rtsp_st->rtp_handle,
536 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 537 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 538 rtsp_st->rtp_handle = NULL;
44b70ce5 539 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
540 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
541 rtsp_st->dynamic_protocol_context,
542 rtsp_st->dynamic_handler);
44b70ce5 543 else if (CONFIG_RTPDEC)
1ced9da3 544 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
545 rtsp_st->sdp_payload_type,
546 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
547 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
548
549 if (!rtsp_st->transport_priv) {
550 return AVERROR(ENOMEM);
44b70ce5 551 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 552 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
553 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
554 rtsp_st->dynamic_protocol_context,
555 rtsp_st->dynamic_handler);
556 }
557 }
558
559 return 0;
560}
561
6f5a3d0a 562#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
563static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
564{
565 const char *p;
566 int v;
567
568 p = *pp;
30619e6e 569 p += strspn(p, SPACE_CHARS);
1617ad97
FB
570 v = strtol(p, (char **)&p, 10);
571 if (*p == '-') {
572 p++;
573 *min_ptr = v;
574 v = strtol(p, (char **)&p, 10);
575 *max_ptr = v;
576 } else {
577 *min_ptr = v;
578 *max_ptr = v;
579 }
580 *pp = p;
581}
582
583/* XXX: only one transport specification is parsed */
a9e534d5 584static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
585{
586 char transport_protocol[16];
587 char profile[16];
588 char lower_transport[16];
589 char parameter[16];
590 RTSPTransportField *th;
591 char buf[256];
115329f1 592
1617ad97 593 reply->nb_transports = 0;
115329f1 594
c8965800 595 for (;;) {
30619e6e 596 p += strspn(p, SPACE_CHARS);
1617ad97
FB
597 if (*p == '\0')
598 break;
599
600 th = &reply->transports[reply->nb_transports];
601
115329f1 602 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 603 "/", &p);
e1502118 604 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
605 get_word_sep(profile, sizeof(profile), "/;,", &p);
606 lower_transport[0] = '\0';
607 /* rtp/avp/<protocol> */
608 if (*p == '/') {
7ecc634e
LB
609 get_word_sep(lower_transport, sizeof(lower_transport),
610 ";,", &p);
119b4668
RB
611 }
612 th->transport = RTSP_TRANSPORT_RTP;
613 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
614 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 615 /* x-pn-tng/<protocol> */
e1502118
LB
616 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
617 profile[0] = '\0';
119b4668 618 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 619 }
b6892136 620 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 621 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 622 else
90abbdba 623 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 624
1617ad97
FB
625 if (*p == ';')
626 p++;
627 /* get each parameter */
628 while (*p != '\0' && *p != ',') {
629 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
630 if (!strcmp(parameter, "port")) {
631 if (*p == '=') {
632 p++;
633 rtsp_parse_range(&th->port_min, &th->port_max, &p);
634 }
635 } else if (!strcmp(parameter, "client_port")) {
636 if (*p == '=') {
637 p++;
115329f1 638 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
639 &th->client_port_max, &p);
640 }
641 } else if (!strcmp(parameter, "server_port")) {
642 if (*p == '=') {
643 p++;
115329f1 644 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
645 &th->server_port_max, &p);
646 }
647 } else if (!strcmp(parameter, "interleaved")) {
648 if (*p == '=') {
649 p++;
115329f1 650 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
651 &th->interleaved_max, &p);
652 }
653 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
654 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
655 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
656 } else if (!strcmp(parameter, "ttl")) {
657 if (*p == '=') {
658 p++;
659 th->ttl = strtol(p, (char **)&p, 10);
660 }
661 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
662 if (*p == '=') {
663 p++;
664 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 665 get_sockaddr(buf, &th->destination);
1617ad97 666 }
619298a8
JW
667 } else if (!strcmp(parameter, "source")) {
668 if (*p == '=') {
669 p++;
670 get_word_sep(buf, sizeof(buf), ";,", &p);
671 av_strlcpy(th->source, buf, sizeof(th->source));
672 }
1617ad97 673 }
619298a8 674
1617ad97
FB
675 while (*p != ';' && *p != '\0' && *p != ',')
676 p++;
677 if (*p == ';')
678 p++;
679 }
680 if (*p == ',')
681 p++;
682
683 reply->nb_transports++;
684 }
685}
686
29db7c3a
MS
687static void handle_rtp_info(RTSPState *rt, const char *url,
688 uint32_t seq, uint32_t rtptime)
689{
690 int i;
691 if (!rtptime || !url[0])
692 return;
693 if (rt->transport != RTSP_TRANSPORT_RTP)
694 return;
695 for (i = 0; i < rt->nb_rtsp_streams; i++) {
696 RTSPStream *rtsp_st = rt->rtsp_streams[i];
697 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
698 if (!rtpctx)
699 continue;
700 if (!strcmp(rtsp_st->control_url, url)) {
701 rtpctx->base_timestamp = rtptime;
702 break;
703 }
704 }
705}
706
707static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
708{
709 int read = 0;
710 char key[20], value[1024], url[1024] = "";
711 uint32_t seq = 0, rtptime = 0;
712
713 for (;;) {
714 p += strspn(p, SPACE_CHARS);
715 if (!*p)
716 break;
717 get_word_sep(key, sizeof(key), "=", &p);
718 if (*p != '=')
719 break;
720 p++;
721 get_word_sep(value, sizeof(value), ";, ", &p);
722 read++;
723 if (!strcmp(key, "url"))
724 av_strlcpy(url, value, sizeof(url));
725 else if (!strcmp(key, "seq"))
726 seq = strtol(value, NULL, 10);
727 else if (!strcmp(key, "rtptime"))
728 rtptime = strtol(value, NULL, 10);
729 if (*p == ',') {
730 handle_rtp_info(rt, url, seq, rtptime);
731 url[0] = '\0';
732 seq = rtptime = 0;
733 read = 0;
734 }
735 if (*p)
736 p++;
737 }
738 if (read > 0)
739 handle_rtp_info(rt, url, seq, rtptime);
740}
741
2626308a 742void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 743 RTSPState *rt, const char *method)
1617ad97
FB
744{
745 const char *p;
746
747 /* NOTE: we do case independent match for broken servers */
748 p = buf;
f7d78f36 749 if (av_stristart(p, "Session:", &p)) {
30e79845 750 int t;
1617ad97 751 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
752 if (av_stristart(p, ";timeout=", &p) &&
753 (t = strtol(p, NULL, 10)) > 0) {
754 reply->timeout = t;
755 }
f7d78f36 756 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 757 reply->content_length = strtol(p, NULL, 10);
f7d78f36 758 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 759 rtsp_parse_transport(reply, p);
f7d78f36 760 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 761 reply->seq = strtol(p, NULL, 10);
f7d78f36 762 } else if (av_stristart(p, "Range:", &p)) {
31693e00 763 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 764 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 765 p += strspn(p, SPACE_CHARS);
30aa6aed 766 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 767 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 768 p += strspn(p, SPACE_CHARS);
7a86bafa 769 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
770 } else if (av_stristart(p, "Notice:", &p) ||
771 av_stristart(p, "X-Notice:", &p)) {
772 reply->notice = strtol(p, NULL, 10);
d243ba30 773 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 774 p += strspn(p, SPACE_CHARS);
d243ba30 775 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 776 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 777 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
778 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
779 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 780 p += strspn(p, SPACE_CHARS);
acc9ed14 781 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 782 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 783 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
784 if (method && !strcmp(method, "DESCRIBE"))
785 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
786 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
787 p += strspn(p, SPACE_CHARS);
788 if (method && !strcmp(method, "PLAY"))
789 rtsp_parse_rtp_info(rt, p);
1617ad97
FB
790 }
791}
792
b7b8fc34 793/* skip a RTP/TCP interleaved packet */
ec55edba 794void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
795{
796 RTSPState *rt = s->priv_data;
797 int ret, len, len1;
798 uint8_t buf[1024];
799
0e848977 800 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
801 if (ret != 3)
802 return;
80fb8234 803 len = AV_RB16(buf + 1);
67c9cd69
BC
804
805 dprintf(s, "skipping RTP packet len=%d\n", len);
806
b7b8fc34
FB
807 /* skip payload */
808 while (len > 0) {
809 len1 = len;
810 if (len1 > sizeof(buf))
811 len1 = sizeof(buf);
0e848977 812 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
813 if (ret != len1)
814 return;
815 len -= len1;
816 }
817}
1617ad97 818
3307e6ea 819int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 820 unsigned char **content_ptr,
3df54c6b 821 int return_on_interleaved_data, const char *method)
1617ad97
FB
822{
823 RTSPState *rt = s->priv_data;
824 char buf[4096], buf1[1024], *q;
825 unsigned char ch;
826 const char *p;
7e726132 827 int ret, content_length, line_count = 0;
1617ad97
FB
828 unsigned char *content = NULL;
829
d541a7d2 830 memset(reply, 0, sizeof(*reply));
1617ad97 831
1617ad97 832 /* parse reply (XXX: use buffers) */
1617ad97 833 rt->last_reply[0] = '\0';
c8965800 834 for (;;) {
1617ad97 835 q = buf;
c8965800 836 for (;;) {
0e848977 837 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 838#ifdef DEBUG_RTP_TCP
67c9cd69 839 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
840#endif
841 if (ret != 1)
2401660d 842 return AVERROR_EOF;
1617ad97
FB
843 if (ch == '\n')
844 break;
b7b8fc34
FB
845 if (ch == '$') {
846 /* XXX: only parse it if first char on line ? */
7e726132
RB
847 if (return_on_interleaved_data) {
848 return 1;
849 } else
ec55edba 850 ff_rtsp_skip_packet(s);
b7b8fc34 851 } else if (ch != '\r') {
1617ad97
FB
852 if ((q - buf) < sizeof(buf) - 1)
853 *q++ = ch;
854 }
855 }
856 *q = '\0';
67c9cd69
BC
857
858 dprintf(s, "line='%s'\n", buf);
859
1617ad97
FB
860 /* test if last line */
861 if (buf[0] == '\0')
862 break;
863 p = buf;
864 if (line_count == 0) {
865 /* get reply code */
866 get_word(buf1, sizeof(buf1), &p);
867 get_word(buf1, sizeof(buf1), &p);
868 reply->status_code = atoi(buf1);
d93fdcbf 869 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 870 } else {
77223c53 871 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
872 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
873 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
874 }
875 line_count++;
876 }
115329f1 877
1617ad97 878 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 879 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 880
1617ad97
FB
881 content_length = reply->content_length;
882 if (content_length > 0) {
883 /* leave some room for a trailing '\0' (useful for simple parsing) */
884 content = av_malloc(content_length + 1);
0e848977 885 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
886 content[content_length] = '\0';
887 }
888 if (content_ptr)
889 *content_ptr = content;
e2e2e7dd
AB
890 else
891 av_free(content);
7e726132 892
7ed8211b
LB
893 if (rt->seq != reply->seq) {
894 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
895 rt->seq, reply->seq);
896 }
897
fccb1770
RB
898 /* EOS */
899 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
900 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 901 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 902 rt->state = RTSP_STATE_IDLE;
c8965800 903 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 904 return AVERROR(EIO); /* data or server error */
c8965800 905 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
906 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
907 return AVERROR(EPERM);
908
7e726132 909 return 0;
1617ad97
FB
910}
911
d0382374 912int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
913 const char *method, const char *url,
914 const char *headers,
915 const unsigned char *send_content,
916 int send_content_length)
29b9f58b
RB
917{
918 RTSPState *rt = s->priv_data;
f5d33f52
JA
919 char buf[4096], *out_buf;
920 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 921
f5d33f52
JA
922 /* Add in RTSP headers */
923 out_buf = buf;
29b9f58b 924 rt->seq++;
b17d11c6
MS
925 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
926 if (headers)
927 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 928 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
929 if (rt->session_id[0] != '\0' && (!headers ||
930 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 931 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 932 }
aa8bf2fb
MS
933 if (rt->auth[0]) {
934 char *str = ff_http_auth_create_response(&rt->auth_state,
935 rt->auth, url, method);
936 if (str)
937 av_strlcat(buf, str, sizeof(buf));
938 av_free(str);
939 }
dfd017bf
MS
940 if (send_content_length > 0 && send_content)
941 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 942 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 943
f5d33f52
JA
944 /* base64 encode rtsp if tunneling */
945 if (rt->control_transport == RTSP_MODE_TUNNEL) {
946 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
947 out_buf = base64buf;
948 }
949
67c9cd69
BC
950 dprintf(s, "Sending:\n%s--\n", buf);
951
f5d33f52
JA
952 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
953 if (send_content_length > 0 && send_content) {
954 if (rt->control_transport == RTSP_MODE_TUNNEL) {
955 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
956 "with content data not supported\n");
957 return AVERROR_PATCHWELCOME;
958 }
b8c2c41d 959 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 960 }
30e79845 961 rt->last_cmd_time = av_gettime();
d0382374
JA
962
963 return 0;
30e79845
RB
964}
965
d0382374 966int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 967 const char *url, const char *headers)
dfd017bf 968{
d0382374 969 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
970}
971
d0382374 972int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
973 const char *headers, RTSPMessageHeader *reply,
974 unsigned char **content_ptr)
30e79845 975{
d0382374 976 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 977 content_ptr, NULL, 0);
29b9f58b
RB
978}
979
d0382374 980int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
981 const char *method, const char *url,
982 const char *header,
983 RTSPMessageHeader *reply,
984 unsigned char **content_ptr,
985 const unsigned char *send_content,
986 int send_content_length)
dfd017bf 987{
30af0779
MS
988 RTSPState *rt = s->priv_data;
989 HTTPAuthType cur_auth_type;
d0382374 990 int ret;
30af0779
MS
991
992retry:
993 cur_auth_type = rt->auth_state.auth_type;
d0382374 994 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
995 send_content,
996 send_content_length)))
d0382374 997 return ret;
dfd017bf 998
3df54c6b 999 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1000 return ret;
30af0779
MS
1001
1002 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1003 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1004 goto retry;
d0382374 1005
bf55cf19 1006 if (reply->status_code > 400){
d93fdcbf 1007 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1008 method,
d93fdcbf
LB
1009 reply->status_code,
1010 reply->reason);
bf55cf19
LB
1011 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1012 }
1013
d0382374 1014 return 0;
dfd017bf
MS
1015}
1016
53620bba 1017/**
32e543f8 1018 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 1019 */
c8965800
RB
1020static int make_setup_request(AVFormatContext *s, const char *host, int port,
1021 int lower_transport, const char *real_challenge)
1617ad97
FB
1022{
1023 RTSPState *rt = s->priv_data;
f830c9a4 1024 int rtx, j, i, err, interleave = 0;
1617ad97 1025 RTSPStream *rtsp_st;
a9e534d5 1026 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1027 char cmd[2048];
e9dea59f
RB
1028 const char *trans_pref;
1029
119b4668 1030 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1031 trans_pref = "x-pn-tng";
1032 else
1033 trans_pref = "RTP/AVP";
115329f1 1034
30e79845
RB
1035 /* default timeout: 1 minute */
1036 rt->timeout = 60;
1037
1617ad97
FB
1038 /* for each stream, make the setup request */
1039 /* XXX: we assume the same server is used for the control of each
c8965800 1040 * RTSP stream */
d1ccf0e0 1041
c8965800 1042 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1043 char transport[2048];
1044
f830c9a4
RB
1045 /**
1046 * WMS serves all UDP data over a single connection, the RTX, which
1047 * isn't necessarily the first in the SDP but has to be the first
1048 * to be set up, else the second/third SETUP will fail with a 461.
1049 */
1050 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1051 rt->server_type == RTSP_SERVER_WMS) {
1052 if (i == 0) {
1053 /* rtx first */
1054 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1055 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1056 if (len >= 4 &&
c8965800
RB
1057 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1058 "/rtx"))
f830c9a4
RB
1059 break;
1060 }
1061 if (rtx == rt->nb_rtsp_streams)
1062 return -1; /* no RTX found */
1063 rtsp_st = rt->rtsp_streams[rtx];
1064 } else
1065 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1066 } else
2fea9650 1067 rtsp_st = rt->rtsp_streams[i];
1617ad97 1068
1617ad97 1069 /* RTP/UDP */
90abbdba 1070 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1071 char buf[256];
85fb7b34 1072
f830c9a4
RB
1073 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1074 port = reply->transports[0].client_port_min;
1075 goto have_port;
1076 }
1077
85fb7b34 1078 /* first try in specified port range */
d1ccf0e0 1079 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1080 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1081 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1082 "?localport=%d", j);
c8965800
RB
1083 /* we will use two ports per rtp stream (rtp and rtcp) */
1084 j += 2;
1085 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1086 goto rtp_opened;
1087 }
1617ad97 1088 }
85fb7b34 1089
c8965800
RB
1090#if 0
1091 /* then try on any port */
1092 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1093 err = AVERROR_INVALIDDATA;
1094 goto fail;
1095 }
1096#endif
85fb7b34
FB
1097
1098 rtp_opened:
67f34aaa 1099 port = rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1100 have_port:
0ad306bc 1101 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1102 "%s/UDP;", trans_pref);
1103 if (rt->server_type != RTSP_SERVER_REAL)
1104 av_strlcat(transport, "unicast;", sizeof(transport));
1105 av_strlcatf(transport, sizeof(transport),
1106 "client_port=%d", port);
f830c9a4
RB
1107 if (rt->transport == RTSP_TRANSPORT_RTP &&
1108 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1109 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1110 }
1111
1112 /* RTP/TCP */
90abbdba 1113 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1114 /** For WMS streams, the application streams are only used for
1115 * UDP. When trying to set it up for TCP streams, the server
1116 * will return an error. Therefore, we skip those streams. */
1117 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1118 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1119 AVMEDIA_TYPE_DATA)
090438cc 1120 continue;
0ad306bc 1121 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1122 "%s/TCP;", trans_pref);
1123 if (rt->server_type == RTSP_SERVER_WMS)
1124 av_strlcat(transport, "unicast;", sizeof(transport));
1125 av_strlcatf(transport, sizeof(transport),
1126 "interleaved=%d-%d",
1127 interleave, interleave + 1);
1128 interleave += 2;
1617ad97
FB
1129 }
1130
90abbdba 1131 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1132 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1133 "%s/UDP;multicast", trans_pref);
1617ad97 1134 }
69adcc4f
MS
1135 if (s->oformat) {
1136 av_strlcat(transport, ";mode=receive", sizeof(transport));
1137 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1138 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1139 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1140 snprintf(cmd, sizeof(cmd),
b6892136 1141 "Transport: %s\r\n",
b17d11c6 1142 transport);
44b70ce5 1143 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1144 char real_res[41], real_csum[9];
1145 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1146 real_challenge);
1147 av_strlcatf(cmd, sizeof(cmd),
1148 "If-Match: %s\r\n"
1149 "RealChallenge2: %s, sd=%s\r\n",
1150 rt->session_id, real_res, real_csum);
1151 }
b17d11c6 1152 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1153 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1154 err = 1;
1155 goto fail;
7e6ca34f
RB
1156 } else if (reply->status_code != RTSP_STATUS_OK ||
1157 reply->nb_transports != 1) {
1617ad97
FB
1158 err = AVERROR_INVALIDDATA;
1159 goto fail;
1160 }
1161
1162 /* XXX: same protocol for all streams is required */
1163 if (i > 0) {
119b4668
RB
1164 if (reply->transports[0].lower_transport != rt->lower_transport ||
1165 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1166 err = AVERROR_INVALIDDATA;
1167 goto fail;
1168 }
1169 } else {
90abbdba 1170 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1171 rt->transport = reply->transports[0].transport;
1617ad97
FB
1172 }
1173
8c579c1c
MS
1174 /* Fail if the server responded with another lower transport mode
1175 * than what we requested. */
1176 if (reply->transports[0].lower_transport != lower_transport) {
1177 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1178 err = AVERROR_INVALIDDATA;
1179 goto fail;
1617ad97
FB
1180 }
1181
90abbdba
RB
1182 switch(reply->transports[0].lower_transport) {
1183 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1184 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1185 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1186 break;
115329f1 1187
c8965800
RB
1188 case RTSP_LOWER_TRANSPORT_UDP: {
1189 char url[1024];
1190
619298a8
JW
1191 /* Use source address if specified */
1192 if (reply->transports[0].source[0]) {
1193 ff_url_join(url, sizeof(url), "rtp", NULL,
1194 reply->transports[0].source,
1195 reply->transports[0].server_port_min, NULL);
1196 } else {
7bac991f
RB
1197 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1198 reply->transports[0].server_port_min, NULL);
619298a8 1199 }
c8965800
RB
1200 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1201 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1202 err = AVERROR_INVALIDDATA;
1203 goto fail;
1617ad97 1204 }
9c8fa20d
MS
1205 /* Try to initialize the connection state in a
1206 * potential NAT router by sending dummy packets.
1207 * RTP/RTCP dummy packets are used for RDT, too.
1208 */
44b70ce5
MS
1209 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1210 CONFIG_RTPDEC)
9c8fa20d 1211 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1212 break;
c8965800
RB
1213 }
1214 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1215 char url[1024], namebuf[50];
1216 struct sockaddr_storage addr;
c8965800
RB
1217 int port, ttl;
1218
7934b15d
MS
1219 if (reply->transports[0].destination.ss_family) {
1220 addr = reply->transports[0].destination;
c8965800
RB
1221 port = reply->transports[0].port_min;
1222 ttl = reply->transports[0].ttl;
1223 } else {
7934b15d 1224 addr = rtsp_st->sdp_ip;
c8965800
RB
1225 port = rtsp_st->sdp_port;
1226 ttl = rtsp_st->sdp_ttl;
1227 }
7934b15d
MS
1228 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1229 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1230 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1231 port, "?ttl=%d", ttl);
c8965800
RB
1232 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1233 err = AVERROR_INVALIDDATA;
1234 goto fail;
1617ad97
FB
1235 }
1236 break;
1237 }
c8965800 1238 }
d1ccf0e0 1239
ee0cb67f 1240 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1241 goto fail;
1617ad97
FB
1242 }
1243
30e79845
RB
1244 if (reply->timeout > 0)
1245 rt->timeout = reply->timeout;
1246
2e889ae4 1247 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1248 rt->need_subscription = 1;
1249
53620bba
RB
1250 return 0;
1251
1252fail:
c8965800 1253 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1254 if (rt->rtsp_streams[i]->rtp_handle) {
1255 url_close(rt->rtsp_streams[i]->rtp_handle);
1256 rt->rtsp_streams[i]->rtp_handle = NULL;
1257 }
1258 }
53620bba
RB
1259 return err;
1260}
1261
b8c2c41d
JA
1262void ff_rtsp_close_connections(AVFormatContext *s)
1263{
1264 RTSPState *rt = s->priv_data;
1265 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1266 url_close(rt->rtsp_hd);
6217b645 1267 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1268}
1269
3307e6ea 1270int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1271{
1272 RTSPState *rt = s->priv_data;
921da217
LB
1273 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1274 char *option_list, *option, *filename;
03f8fc08 1275 int port, err, tcp_fd;
354b7573 1276 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1277 int lower_transport_mask = 0;
1cf151e9 1278 char real_challenge[64];
03f8fc08
MS
1279 struct sockaddr_storage peer;
1280 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1281
1282 if (!ff_network_init())
1283 return AVERROR(EIO);
c8965800 1284redirect:
f5d33f52 1285 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1286 /* extract hostname and port */
f3bfe388 1287 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1288 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1289 if (*auth) {
aa8bf2fb 1290 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1291 }
53620bba
RB
1292 if (port < 0)
1293 port = RTSP_DEFAULT_PORT;
1294
1295 /* search for options */
602eb779 1296 option_list = strrchr(path, '?');
53620bba 1297 if (option_list) {
2a21adf9
MS
1298 /* Strip out the RTSP specific options, write out the rest of
1299 * the options back into the same string. */
1300 filename = option_list;
c8965800 1301 while (option_list) {
53620bba 1302 /* move the option pointer */
921da217 1303 option = ++option_list;
53620bba
RB
1304 option_list = strchr(option_list, '&');
1305 if (option_list)
921da217
LB
1306 *option_list = 0;
1307
53620bba 1308 /* handle the options */
c8965800 1309 if (!strcmp(option, "udp")) {
7a033e08 1310 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1311 } else if (!strcmp(option, "multicast")) {
7a033e08 1312 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1313 } else if (!strcmp(option, "tcp")) {
7a033e08 1314 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1315 } else if(!strcmp(option, "http")) {
1316 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1317 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1318 } else {
2a21adf9
MS
1319 /* Write options back into the buffer, using memmove instead
1320 * of strcpy since the strings may overlap. */
1321 int len = strlen(option);
1322 memmove(++filename, option, len);
1323 filename += len;
921da217
LB
1324 if (option_list) *filename = '&';
1325 }
53620bba 1326 }
921da217 1327 *filename = 0;
53620bba
RB
1328 }
1329
90abbdba 1330 if (!lower_transport_mask)
2a1d51c5 1331 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1332
3e24c770 1333 if (s->oformat) {
b7dc88fc
MS
1334 /* Only UDP or TCP - UDP multicast isn't supported. */
1335 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1336 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1337 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1338 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1339 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1340 err = AVERROR(EINVAL);
1341 goto fail;
1342 }
1343 }
1344
4bc5cc23
MS
1345 /* Construct the URI used in request; this is similar to s->filename,
1346 * but with authentication credentials removed and RTSP specific options
1347 * stripped out. */
1348 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1349 host, port, "%s", path);
1350
f5d33f52
JA
1351 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1352 /* set up initial handshake for tunneling */
1353 char httpname[1024];
1354 char sessioncookie[17];
1355 char headers[1024];
1356
10ed37b5 1357 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1358 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1359 av_get_random_seed(), av_get_random_seed());
1360
1361 /* GET requests */
9290f15d 1362 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1363 err = AVERROR(EIO);
1364 goto fail;
1365 }
1366
1367 /* generate GET headers */
1368 snprintf(headers, sizeof(headers),
1369 "x-sessioncookie: %s\r\n"
1370 "Accept: application/x-rtsp-tunnelled\r\n"
1371 "Pragma: no-cache\r\n"
1372 "Cache-Control: no-cache\r\n",
1373 sessioncookie);
00e4a1f4 1374 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1375
1376 /* complete the connection */
9290f15d 1377 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1378 err = AVERROR(EIO);
1379 goto fail;
1380 }
1381
1382 /* POST requests */
9290f15d 1383 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1384 err = AVERROR(EIO);
1385 goto fail;
1386 }
1387
1388 /* generate POST headers */
1389 snprintf(headers, sizeof(headers),
1390 "x-sessioncookie: %s\r\n"
1391 "Content-Type: application/x-rtsp-tunnelled\r\n"
1392 "Pragma: no-cache\r\n"
1393 "Cache-Control: no-cache\r\n"
1394 "Content-Length: 32767\r\n"
1395 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1396 sessioncookie);
00e4a1f4
JA
1397 ff_http_set_headers(rt->rtsp_hd_out, headers);
1398 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1399
a8ead332
MS
1400 /* Initialize the authentication state for the POST session. The HTTP
1401 * protocol implementation doesn't properly handle multi-pass
1402 * authentication for POST requests, since it would require one of
1403 * the following:
1404 * - implementing Expect: 100-continue, which many HTTP servers
1405 * don't support anyway, even less the RTSP servers that do HTTP
1406 * tunneling
1407 * - sending the whole POST data until getting a 401 reply specifying
1408 * what authentication method to use, then resending all that data
1409 * - waiting for potential 401 replies directly after sending the
1410 * POST header (waiting for some unspecified time)
1411 * Therefore, we copy the full auth state, which works for both basic
1412 * and digest. (For digest, we would have to synchronize the nonce
1413 * count variable between the two sessions, if we'd do more requests
1414 * with the original session, though.)
1415 */
1416 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1417
9290f15d
MS
1418 /* complete the connection */
1419 if (url_connect(rt->rtsp_hd_out)) {
1420 err = AVERROR(EIO);
1421 goto fail;
1422 }
f5d33f52 1423 } else {
48e77473 1424 /* open the tcp connection */
41874d0a 1425 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1426 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1427 err = AVERROR(EIO);
1428 goto fail;
1429 }
00e4a1f4 1430 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1431 }
53620bba
RB
1432 rt->seq = 0;
1433
00e4a1f4 1434 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1435 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1436 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1437 NULL, 0, NI_NUMERICHOST);
1438 }
1439
c8965800
RB
1440 /* request options supported by the server; this also detects server
1441 * type */
1cf151e9 1442 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1443 cmd[0] = 0;
2e889ae4 1444 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1445 av_strlcat(cmd,
1446 /**
1447 * The following entries are required for proper
1448 * streaming from a Realmedia server. They are
1449 * interdependent in some way although we currently
1450 * don't quite understand how. Values were copied
1451 * from mplayer SVN r23589.
1452 * @param CompanyID is a 16-byte ID in base64
1453 * @param ClientChallenge is a 16-byte ID in hex
1454 */
1455 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1456 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1457 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1458 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1459 sizeof(cmd));
b17d11c6 1460 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1461 if (reply->status_code != RTSP_STATUS_OK) {
1462 err = AVERROR_INVALIDDATA;
1463 goto fail;
1464 }
1465
1466 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1467 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1468 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1469 continue;
7a86bafa
RB
1470 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1471 rt->server_type = RTSP_SERVER_WMS;
c8965800 1472 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1473 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1474 break;
1475 }
1476
44b70ce5 1477 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1478 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1479 else if (CONFIG_RTSP_MUXER)
c2688f3a 1480 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1481 if (err)
53620bba 1482 goto fail;
53620bba 1483
8a8754d8 1484 do {
c8965800
RB
1485 int lower_transport = ff_log2_tab[lower_transport_mask &
1486 ~(lower_transport_mask - 1)];
8a8754d8 1487
90abbdba 1488 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1489 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1490 real_challenge : NULL);
8a8754d8 1491 if (err < 0)
7e6ca34f 1492 goto fail;
90abbdba
RB
1493 lower_transport_mask &= ~(1 << lower_transport);
1494 if (lower_transport_mask == 0 && err == 1) {
adef229e 1495 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1496 goto fail;
1497 }
1498 } while (err);
53620bba 1499
ff762d6e 1500 rt->state = RTSP_STATE_IDLE;
c8965800 1501 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1502 return 0;
1503 fail:
3307e6ea 1504 ff_rtsp_close_streams(s);
b8c2c41d 1505 ff_rtsp_close_connections(s);
35cfd646 1506 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1507 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1508 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1509 reply->status_code,
1510 s->filename);
1511 goto redirect;
1512 }
57b5555c 1513 ff_network_close();
1617ad97
FB
1514 return err;
1515}
2e802e38 1516#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1517
44b70ce5 1518#if CONFIG_RTPDEC
0e59034e 1519static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1520 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1521{
1522 RTSPState *rt = s->priv_data;
1523 RTSPStream *rtsp_st;
1524 fd_set rfds;
a1ba71aa 1525 int fd, fd_rtcp, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1526 struct timeval tv;
1527
c8965800 1528 for (;;) {
0e59034e
RB
1529 if (url_interrupt_cb())
1530 return AVERROR(EINTR);
321259c1
MS
1531 if (wait_end && wait_end - av_gettime() < 0)
1532 return AVERROR(EAGAIN);
0e59034e
RB
1533 FD_ZERO(&rfds);
1534 if (rt->rtsp_hd) {
1535 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1536 FD_SET(tcp_fd, &rfds);
1537 } else {
1538 fd_max = 0;
1539 tcp_fd = -1;
1540 }
c8965800 1541 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1542 rtsp_st = rt->rtsp_streams[i];
1543 if (rtsp_st->rtp_handle) {
0e59034e 1544 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1545 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1546 if (FFMAX(fd, fd_rtcp) > fd_max)
1547 fd_max = FFMAX(fd, fd_rtcp);
0e59034e 1548 FD_SET(fd, &rfds);
a1ba71aa 1549 FD_SET(fd_rtcp, &rfds);
0e59034e
RB
1550 }
1551 }
1552 tv.tv_sec = 0;
9cba6f5f 1553 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1554 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1555 if (n > 0) {
9cba6f5f 1556 timeout_cnt = 0;
c8965800 1557 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1558 rtsp_st = rt->rtsp_streams[i];
1559 if (rtsp_st->rtp_handle) {
1560 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1561 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1562 if (FD_ISSET(fd_rtcp, &rfds) || FD_ISSET(fd, &rfds)) {
0e59034e
RB
1563 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1564 if (ret > 0) {
1565 *prtsp_st = rtsp_st;
1566 return ret;
1567 }
1568 }
1569 }
1570 }
5fe8021a 1571#if CONFIG_RTSP_DEMUXER
27000636 1572 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1573 RTSPMessageHeader reply;
1574
3df54c6b 1575 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1576 if (ret < 0)
1577 return ret;
0e59034e 1578 /* XXX: parse message */
c02fd3d2 1579 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1580 return 0;
1581 }
5fe8021a 1582#endif
9cba6f5f 1583 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1584 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1585 } else if (n < 0 && errno != EINTR)
1586 return AVERROR(errno);
0e59034e
RB
1587 }
1588}
1589
0526c6f7 1590int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1591{
1592 RTSPState *rt = s->priv_data;
1593 int ret, len;
321259c1
MS
1594 RTSPStream *rtsp_st, *first_queue_st = NULL;
1595 int64_t wait_end = 0;
0e59034e 1596
b20359f5
JA
1597 if (rt->nb_byes == rt->nb_rtsp_streams)
1598 return AVERROR_EOF;
1599
0e59034e
RB
1600 /* get next frames from the same RTP packet */
1601 if (rt->cur_transport_priv) {
c8965800 1602 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1603 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1604 } else
0e59034e
RB
1605 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1606 if (ret == 0) {
1607 rt->cur_transport_priv = NULL;
1608 return 0;
1609 } else if (ret == 1) {
1610 return 0;
c8965800 1611 } else
0e59034e 1612 rt->cur_transport_priv = NULL;
0e59034e
RB
1613 }
1614
321259c1
MS
1615 if (rt->transport == RTSP_TRANSPORT_RTP) {
1616 int i;
1617 int64_t first_queue_time = 0;
1618 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1619 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1620 int64_t queue_time;
1621 if (!rtpctx)
1622 continue;
1623 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1624 if (queue_time && (queue_time - first_queue_time < 0 ||
1625 !first_queue_time)) {
1626 first_queue_time = queue_time;
1627 first_queue_st = rt->rtsp_streams[i];
1628 }
1629 }
1630 if (first_queue_time)
1631 wait_end = first_queue_time + s->max_delay;
1632 }
1633
0e59034e
RB
1634 /* read next RTP packet */
1635 redo:
96a7c975
MS
1636 if (!rt->recvbuf) {
1637 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1638 if (!rt->recvbuf)
1639 return AVERROR(ENOMEM);
1640 }
1641
0e59034e
RB
1642 switch(rt->lower_transport) {
1643 default:
5fe8021a 1644#if CONFIG_RTSP_DEMUXER
0e59034e 1645 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1646 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1647 break;
5fe8021a 1648#endif
0e59034e
RB
1649 case RTSP_LOWER_TRANSPORT_UDP:
1650 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1651 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
0e59034e
RB
1652 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1653 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1654 break;
1655 }
321259c1
MS
1656 if (len == AVERROR(EAGAIN) && first_queue_st &&
1657 rt->transport == RTSP_TRANSPORT_RTP) {
1658 rtsp_st = first_queue_st;
1659 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1660 goto end;
1661 }
0e59034e
RB
1662 if (len < 0)
1663 return len;
1664 if (len == 0)
1665 return AVERROR_EOF;
c8965800 1666 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1667 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1668 } else {
ad4ad27f 1669 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1670 if (ret < 0) {
1671 /* Either bad packet, or a RTCP packet. Check if the
1672 * first_rtcp_ntp_time field was initialized. */
1673 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1674 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1675 /* first_rtcp_ntp_time has been initialized for this stream,
1676 * copy the same value to all other uninitialized streams,
1677 * in order to map their timestamp origin to the same ntp time
1678 * as this one. */
1679 int i;
3a1cdcc7
MS
1680 AVStream *st = NULL;
1681 if (rtsp_st->stream_index >= 0)
1682 st = s->streams[rtsp_st->stream_index];
2cab6b48 1683 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1684 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1685 AVStream *st2 = NULL;
1686 if (rt->rtsp_streams[i]->stream_index >= 0)
1687 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1688 if (rtpctx2 && st && st2 &&
1689 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1690 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1691 rtpctx2->rtcp_ts_offset = av_rescale_q(
1692 rtpctx->rtcp_ts_offset, st->time_base,
1693 st2->time_base);
1694 }
2cab6b48
MS
1695 }
1696 }
b20359f5
JA
1697 if (ret == -RTCP_BYE) {
1698 rt->nb_byes++;
1699
1700 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1701 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1702
1703 if (rt->nb_byes == rt->nb_rtsp_streams)
1704 return AVERROR_EOF;
1705 }
2cab6b48
MS
1706 }
1707 }
321259c1 1708end:
0e59034e
RB
1709 if (ret < 0)
1710 goto redo;
c8965800 1711 if (ret == 1)
0e59034e
RB
1712 /* more packets may follow, so we save the RTP context */
1713 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1714
1715 return ret;
1716}
44b70ce5 1717#endif /* CONFIG_RTPDEC */
0e59034e 1718
44b70ce5 1719#if CONFIG_SDP_DEMUXER
cb1fdc61 1720static int sdp_probe(AVProbeData *p1)
93ced3e8 1721{
0e1ceacd 1722 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1723
3fbd12d1 1724 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1725 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1726 if (p + sizeof("c=IN IP") - 1 < p_end &&
1727 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1728 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1729
c8965800 1730 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1731 if (++p >= p_end)
cb1fdc61 1732 break;
cb1fdc61
FB
1733 if (*p == '\r')
1734 p++;
1735 }
93ced3e8
FB
1736 return 0;
1737}
1738
c8965800 1739static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1740{
8b1ab7bf 1741 RTSPState *rt = s->priv_data;
93ced3e8
FB
1742 RTSPStream *rtsp_st;
1743 int size, i, err;
1744 char *content;
1745 char url[1024];
1746
57b5555c
MS
1747 if (!ff_network_init())
1748 return AVERROR(EIO);
1749
93ced3e8
FB
1750 /* read the whole sdp file */
1751 /* XXX: better loading */
1752 content = av_malloc(SDP_MAX_SIZE);
899681cd 1753 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1754 if (size <= 0) {
1755 av_free(content);
1756 return AVERROR_INVALIDDATA;
1757 }
1758 content[size] ='\0';
1759
0526c6f7 1760 ff_sdp_parse(s, content);
93ced3e8
FB
1761 av_free(content);
1762
1763 /* open each RTP stream */
c8965800 1764 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1765 char namebuf[50];
8b1ab7bf 1766 rtsp_st = rt->rtsp_streams[i];
115329f1 1767
3fbd12d1
MS
1768 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1769 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1770 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1771 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1772 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1773 rtsp_st->sdp_ttl);
dbf30963 1774 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1775 err = AVERROR_INVALIDDATA;
1776 goto fail;
1777 }
ee0cb67f 1778 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1779 goto fail;
93ced3e8
FB
1780 }
1781 return 0;
c8965800 1782fail:
3307e6ea 1783 ff_rtsp_close_streams(s);
57b5555c 1784 ff_network_close();
93ced3e8
FB
1785 return err;
1786}
1787
93ced3e8
FB
1788static int sdp_read_close(AVFormatContext *s)
1789{
3307e6ea 1790 ff_rtsp_close_streams(s);
57b5555c 1791 ff_network_close();
93ced3e8
FB
1792 return 0;
1793}
1794
ff70e601 1795AVInputFormat sdp_demuxer = {
93ced3e8 1796 "sdp",
bde15e74 1797 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1798 sizeof(RTSPState),
1799 sdp_probe,
1800 sdp_read_header,
0526c6f7 1801 ff_rtsp_fetch_packet,
93ced3e8
FB
1802 sdp_read_close,
1803};
44b70ce5 1804#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1805
44b70ce5 1806#if CONFIG_RTP_DEMUXER
44594cc7
MS
1807static int rtp_probe(AVProbeData *p)
1808{
1809 if (av_strstart(p->filename, "rtp:", NULL))
1810 return AVPROBE_SCORE_MAX;
1811 return 0;
1812}
1813
1814static int rtp_read_header(AVFormatContext *s,
1815 AVFormatParameters *ap)
1816{
1817 uint8_t recvbuf[1500];
1818 char host[500], sdp[500];
1819 int ret, port;
1820 URLContext* in = NULL;
1821 int payload_type;
1822 AVCodecContext codec;
1823 struct sockaddr_storage addr;
1824 ByteIOContext pb;
1825 socklen_t addrlen = sizeof(addr);
1826
1827 if (!ff_network_init())
1828 return AVERROR(EIO);
1829
1830 ret = url_open(&in, s->filename, URL_RDONLY);
1831 if (ret)
1832 goto fail;
1833
1834 while (1) {
1835 ret = url_read(in, recvbuf, sizeof(recvbuf));
1836 if (ret == AVERROR(EAGAIN))
1837 continue;
1838 if (ret < 0)
1839 goto fail;
1840 if (ret < 12) {
1841 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1842 continue;
1843 }
1844
1845 if ((recvbuf[0] & 0xc0) != 0x80) {
1846 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1847 "received\n");
1848 continue;
1849 }
1850
1851 payload_type = recvbuf[1] & 0x7f;
1852 break;
1853 }
1854 getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
1855 url_close(in);
1856 in = NULL;
1857
1858 memset(&codec, 0, sizeof(codec));
1859 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1860 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1861 "without an SDP file describing it\n",
1862 payload_type);
1863 goto fail;
1864 }
1865 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1866 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1867 "properly you need an SDP file "
1868 "describing it\n");
1869 }
1870
1871 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1872 NULL, 0, s->filename);
1873
1874 snprintf(sdp, sizeof(sdp),
1875 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1876 addr.ss_family == AF_INET ? 4 : 6, host,
1877 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1878 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1879 port, payload_type);
1880 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1881
1882 init_put_byte(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
1883 s->pb = &pb;
1884
1885 /* sdp_read_header initializes this again */
1886 ff_network_close();
1887
1888 ret = sdp_read_header(s, ap);
1889 s->pb = NULL;
1890 return ret;
1891
1892fail:
1893 if (in)
1894 url_close(in);
1895 ff_network_close();
1896 return ret;
1897}
1898
1899AVInputFormat rtp_demuxer = {
1900 "rtp",
1901 NULL_IF_CONFIG_SMALL("RTP input format"),
1902 sizeof(RTSPState),
1903 rtp_probe,
1904 rtp_read_header,
0526c6f7 1905 ff_rtsp_fetch_packet,
44594cc7
MS
1906 sdp_read_close,
1907 .flags = AVFMT_NOFILE,
1908};
44b70ce5 1909#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1910