Fix a floating point exception for invalid framerate, fixes issue 2470.
[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
2626308a
MS
687void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
688 HTTPAuthState *auth_state)
1617ad97
FB
689{
690 const char *p;
691
692 /* NOTE: we do case independent match for broken servers */
693 p = buf;
f7d78f36 694 if (av_stristart(p, "Session:", &p)) {
30e79845 695 int t;
1617ad97 696 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
697 if (av_stristart(p, ";timeout=", &p) &&
698 (t = strtol(p, NULL, 10)) > 0) {
699 reply->timeout = t;
700 }
f7d78f36 701 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 702 reply->content_length = strtol(p, NULL, 10);
f7d78f36 703 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 704 rtsp_parse_transport(reply, p);
f7d78f36 705 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 706 reply->seq = strtol(p, NULL, 10);
f7d78f36 707 } else if (av_stristart(p, "Range:", &p)) {
31693e00 708 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 709 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 710 p += strspn(p, SPACE_CHARS);
30aa6aed 711 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 712 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 713 p += strspn(p, SPACE_CHARS);
7a86bafa 714 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
715 } else if (av_stristart(p, "Notice:", &p) ||
716 av_stristart(p, "X-Notice:", &p)) {
717 reply->notice = strtol(p, NULL, 10);
d243ba30 718 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 719 p += strspn(p, SPACE_CHARS);
d243ba30 720 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a 721 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
30619e6e 722 p += strspn(p, SPACE_CHARS);
2626308a
MS
723 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
724 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
30619e6e 725 p += strspn(p, SPACE_CHARS);
2626308a 726 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
dd22cfb1
MS
727 } else if (av_stristart(p, "Content-Base:", &p)) {
728 p += strspn(p, SPACE_CHARS);
729 av_strlcpy(reply->content_base, p , sizeof(reply->content_base));
1617ad97
FB
730 }
731}
732
b7b8fc34 733/* skip a RTP/TCP interleaved packet */
ec55edba 734void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
735{
736 RTSPState *rt = s->priv_data;
737 int ret, len, len1;
738 uint8_t buf[1024];
739
0e848977 740 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
741 if (ret != 3)
742 return;
80fb8234 743 len = AV_RB16(buf + 1);
67c9cd69
BC
744
745 dprintf(s, "skipping RTP packet len=%d\n", len);
746
b7b8fc34
FB
747 /* skip payload */
748 while (len > 0) {
749 len1 = len;
750 if (len1 > sizeof(buf))
751 len1 = sizeof(buf);
0e848977 752 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
753 if (ret != len1)
754 return;
755 len -= len1;
756 }
757}
1617ad97 758
3307e6ea 759int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
760 unsigned char **content_ptr,
761 int return_on_interleaved_data)
1617ad97
FB
762{
763 RTSPState *rt = s->priv_data;
764 char buf[4096], buf1[1024], *q;
765 unsigned char ch;
766 const char *p;
7e726132 767 int ret, content_length, line_count = 0;
1617ad97
FB
768 unsigned char *content = NULL;
769
d541a7d2 770 memset(reply, 0, sizeof(*reply));
1617ad97 771
1617ad97 772 /* parse reply (XXX: use buffers) */
1617ad97 773 rt->last_reply[0] = '\0';
c8965800 774 for (;;) {
1617ad97 775 q = buf;
c8965800 776 for (;;) {
0e848977 777 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 778#ifdef DEBUG_RTP_TCP
67c9cd69 779 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
780#endif
781 if (ret != 1)
2401660d 782 return AVERROR_EOF;
1617ad97
FB
783 if (ch == '\n')
784 break;
b7b8fc34
FB
785 if (ch == '$') {
786 /* XXX: only parse it if first char on line ? */
7e726132
RB
787 if (return_on_interleaved_data) {
788 return 1;
789 } else
ec55edba 790 ff_rtsp_skip_packet(s);
b7b8fc34 791 } else if (ch != '\r') {
1617ad97
FB
792 if ((q - buf) < sizeof(buf) - 1)
793 *q++ = ch;
794 }
795 }
796 *q = '\0';
67c9cd69
BC
797
798 dprintf(s, "line='%s'\n", buf);
799
1617ad97
FB
800 /* test if last line */
801 if (buf[0] == '\0')
802 break;
803 p = buf;
804 if (line_count == 0) {
805 /* get reply code */
806 get_word(buf1, sizeof(buf1), &p);
807 get_word(buf1, sizeof(buf1), &p);
808 reply->status_code = atoi(buf1);
d93fdcbf 809 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 810 } else {
2626308a 811 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
812 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
813 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
814 }
815 line_count++;
816 }
115329f1 817
1617ad97 818 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 819 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 820
1617ad97
FB
821 content_length = reply->content_length;
822 if (content_length > 0) {
823 /* leave some room for a trailing '\0' (useful for simple parsing) */
824 content = av_malloc(content_length + 1);
0e848977 825 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
826 content[content_length] = '\0';
827 }
828 if (content_ptr)
829 *content_ptr = content;
e2e2e7dd
AB
830 else
831 av_free(content);
7e726132 832
7ed8211b
LB
833 if (rt->seq != reply->seq) {
834 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
835 rt->seq, reply->seq);
836 }
837
fccb1770
RB
838 /* EOS */
839 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
840 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 841 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 842 rt->state = RTSP_STATE_IDLE;
c8965800 843 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 844 return AVERROR(EIO); /* data or server error */
c8965800 845 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
846 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
847 return AVERROR(EPERM);
848
7e726132 849 return 0;
1617ad97
FB
850}
851
d0382374 852int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
853 const char *method, const char *url,
854 const char *headers,
855 const unsigned char *send_content,
856 int send_content_length)
29b9f58b
RB
857{
858 RTSPState *rt = s->priv_data;
f5d33f52
JA
859 char buf[4096], *out_buf;
860 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 861
f5d33f52
JA
862 /* Add in RTSP headers */
863 out_buf = buf;
29b9f58b 864 rt->seq++;
b17d11c6
MS
865 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
866 if (headers)
867 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 868 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
869 if (rt->session_id[0] != '\0' && (!headers ||
870 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 871 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 872 }
aa8bf2fb
MS
873 if (rt->auth[0]) {
874 char *str = ff_http_auth_create_response(&rt->auth_state,
875 rt->auth, url, method);
876 if (str)
877 av_strlcat(buf, str, sizeof(buf));
878 av_free(str);
879 }
dfd017bf
MS
880 if (send_content_length > 0 && send_content)
881 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 882 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 883
f5d33f52
JA
884 /* base64 encode rtsp if tunneling */
885 if (rt->control_transport == RTSP_MODE_TUNNEL) {
886 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
887 out_buf = base64buf;
888 }
889
67c9cd69
BC
890 dprintf(s, "Sending:\n%s--\n", buf);
891
f5d33f52
JA
892 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
893 if (send_content_length > 0 && send_content) {
894 if (rt->control_transport == RTSP_MODE_TUNNEL) {
895 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
896 "with content data not supported\n");
897 return AVERROR_PATCHWELCOME;
898 }
b8c2c41d 899 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 900 }
30e79845 901 rt->last_cmd_time = av_gettime();
d0382374
JA
902
903 return 0;
30e79845
RB
904}
905
d0382374 906int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 907 const char *url, const char *headers)
dfd017bf 908{
d0382374 909 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
910}
911
d0382374 912int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
913 const char *headers, RTSPMessageHeader *reply,
914 unsigned char **content_ptr)
30e79845 915{
d0382374 916 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 917 content_ptr, NULL, 0);
29b9f58b
RB
918}
919
d0382374 920int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
921 const char *method, const char *url,
922 const char *header,
923 RTSPMessageHeader *reply,
924 unsigned char **content_ptr,
925 const unsigned char *send_content,
926 int send_content_length)
dfd017bf 927{
30af0779
MS
928 RTSPState *rt = s->priv_data;
929 HTTPAuthType cur_auth_type;
d0382374 930 int ret;
30af0779
MS
931
932retry:
933 cur_auth_type = rt->auth_state.auth_type;
d0382374 934 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
935 send_content,
936 send_content_length)))
d0382374 937 return ret;
dfd017bf 938
d0382374
JA
939 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
940 return ret;
30af0779
MS
941
942 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
943 rt->auth_state.auth_type != HTTP_AUTH_NONE)
944 goto retry;
d0382374 945
bf55cf19 946 if (reply->status_code > 400){
d93fdcbf 947 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 948 method,
d93fdcbf
LB
949 reply->status_code,
950 reply->reason);
bf55cf19
LB
951 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
952 }
953
d0382374 954 return 0;
dfd017bf
MS
955}
956
53620bba 957/**
32e543f8 958 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 959 */
c8965800
RB
960static int make_setup_request(AVFormatContext *s, const char *host, int port,
961 int lower_transport, const char *real_challenge)
1617ad97
FB
962{
963 RTSPState *rt = s->priv_data;
f830c9a4 964 int rtx, j, i, err, interleave = 0;
1617ad97 965 RTSPStream *rtsp_st;
a9e534d5 966 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 967 char cmd[2048];
e9dea59f
RB
968 const char *trans_pref;
969
119b4668 970 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
971 trans_pref = "x-pn-tng";
972 else
973 trans_pref = "RTP/AVP";
115329f1 974
30e79845
RB
975 /* default timeout: 1 minute */
976 rt->timeout = 60;
977
1617ad97
FB
978 /* for each stream, make the setup request */
979 /* XXX: we assume the same server is used for the control of each
c8965800 980 * RTSP stream */
d1ccf0e0 981
c8965800 982 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
983 char transport[2048];
984
f830c9a4
RB
985 /**
986 * WMS serves all UDP data over a single connection, the RTX, which
987 * isn't necessarily the first in the SDP but has to be the first
988 * to be set up, else the second/third SETUP will fail with a 461.
989 */
990 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
991 rt->server_type == RTSP_SERVER_WMS) {
992 if (i == 0) {
993 /* rtx first */
994 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
995 int len = strlen(rt->rtsp_streams[rtx]->control_url);
996 if (len >= 4 &&
c8965800
RB
997 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
998 "/rtx"))
f830c9a4
RB
999 break;
1000 }
1001 if (rtx == rt->nb_rtsp_streams)
1002 return -1; /* no RTX found */
1003 rtsp_st = rt->rtsp_streams[rtx];
1004 } else
1005 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1006 } else
2fea9650 1007 rtsp_st = rt->rtsp_streams[i];
1617ad97 1008
1617ad97 1009 /* RTP/UDP */
90abbdba 1010 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1011 char buf[256];
85fb7b34 1012
f830c9a4
RB
1013 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1014 port = reply->transports[0].client_port_min;
1015 goto have_port;
1016 }
1017
85fb7b34 1018 /* first try in specified port range */
d1ccf0e0 1019 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1020 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1021 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1022 "?localport=%d", j);
c8965800
RB
1023 /* we will use two ports per rtp stream (rtp and rtcp) */
1024 j += 2;
1025 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1026 goto rtp_opened;
1027 }
1617ad97 1028 }
85fb7b34 1029
c8965800
RB
1030#if 0
1031 /* then try on any port */
1032 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1033 err = AVERROR_INVALIDDATA;
1034 goto fail;
1035 }
1036#endif
85fb7b34
FB
1037
1038 rtp_opened:
67f34aaa 1039 port = rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1040 have_port:
0ad306bc 1041 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1042 "%s/UDP;", trans_pref);
1043 if (rt->server_type != RTSP_SERVER_REAL)
1044 av_strlcat(transport, "unicast;", sizeof(transport));
1045 av_strlcatf(transport, sizeof(transport),
1046 "client_port=%d", port);
f830c9a4
RB
1047 if (rt->transport == RTSP_TRANSPORT_RTP &&
1048 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1049 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1050 }
1051
1052 /* RTP/TCP */
90abbdba 1053 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1054 /** For WMS streams, the application streams are only used for
1055 * UDP. When trying to set it up for TCP streams, the server
1056 * will return an error. Therefore, we skip those streams. */
1057 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1058 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1059 AVMEDIA_TYPE_DATA)
090438cc 1060 continue;
0ad306bc 1061 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1062 "%s/TCP;", trans_pref);
1063 if (rt->server_type == RTSP_SERVER_WMS)
1064 av_strlcat(transport, "unicast;", sizeof(transport));
1065 av_strlcatf(transport, sizeof(transport),
1066 "interleaved=%d-%d",
1067 interleave, interleave + 1);
1068 interleave += 2;
1617ad97
FB
1069 }
1070
90abbdba 1071 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1072 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1073 "%s/UDP;multicast", trans_pref);
1617ad97 1074 }
69adcc4f
MS
1075 if (s->oformat) {
1076 av_strlcat(transport, ";mode=receive", sizeof(transport));
1077 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1078 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1079 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1080 snprintf(cmd, sizeof(cmd),
b6892136 1081 "Transport: %s\r\n",
b17d11c6 1082 transport);
44b70ce5 1083 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1084 char real_res[41], real_csum[9];
1085 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1086 real_challenge);
1087 av_strlcatf(cmd, sizeof(cmd),
1088 "If-Match: %s\r\n"
1089 "RealChallenge2: %s, sd=%s\r\n",
1090 rt->session_id, real_res, real_csum);
1091 }
b17d11c6 1092 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1093 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1094 err = 1;
1095 goto fail;
7e6ca34f
RB
1096 } else if (reply->status_code != RTSP_STATUS_OK ||
1097 reply->nb_transports != 1) {
1617ad97
FB
1098 err = AVERROR_INVALIDDATA;
1099 goto fail;
1100 }
1101
1102 /* XXX: same protocol for all streams is required */
1103 if (i > 0) {
119b4668
RB
1104 if (reply->transports[0].lower_transport != rt->lower_transport ||
1105 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1106 err = AVERROR_INVALIDDATA;
1107 goto fail;
1108 }
1109 } else {
90abbdba 1110 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1111 rt->transport = reply->transports[0].transport;
1617ad97
FB
1112 }
1113
8c579c1c
MS
1114 /* Fail if the server responded with another lower transport mode
1115 * than what we requested. */
1116 if (reply->transports[0].lower_transport != lower_transport) {
1117 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1118 err = AVERROR_INVALIDDATA;
1119 goto fail;
1617ad97
FB
1120 }
1121
90abbdba
RB
1122 switch(reply->transports[0].lower_transport) {
1123 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1124 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1125 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1126 break;
115329f1 1127
c8965800
RB
1128 case RTSP_LOWER_TRANSPORT_UDP: {
1129 char url[1024];
1130
619298a8
JW
1131 /* Use source address if specified */
1132 if (reply->transports[0].source[0]) {
1133 ff_url_join(url, sizeof(url), "rtp", NULL,
1134 reply->transports[0].source,
1135 reply->transports[0].server_port_min, NULL);
1136 } else {
7bac991f
RB
1137 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1138 reply->transports[0].server_port_min, NULL);
619298a8 1139 }
c8965800
RB
1140 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1141 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1142 err = AVERROR_INVALIDDATA;
1143 goto fail;
1617ad97 1144 }
9c8fa20d
MS
1145 /* Try to initialize the connection state in a
1146 * potential NAT router by sending dummy packets.
1147 * RTP/RTCP dummy packets are used for RDT, too.
1148 */
44b70ce5
MS
1149 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1150 CONFIG_RTPDEC)
9c8fa20d 1151 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1152 break;
c8965800
RB
1153 }
1154 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1155 char url[1024], namebuf[50];
1156 struct sockaddr_storage addr;
c8965800
RB
1157 int port, ttl;
1158
7934b15d
MS
1159 if (reply->transports[0].destination.ss_family) {
1160 addr = reply->transports[0].destination;
c8965800
RB
1161 port = reply->transports[0].port_min;
1162 ttl = reply->transports[0].ttl;
1163 } else {
7934b15d 1164 addr = rtsp_st->sdp_ip;
c8965800
RB
1165 port = rtsp_st->sdp_port;
1166 ttl = rtsp_st->sdp_ttl;
1167 }
7934b15d
MS
1168 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1169 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1170 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1171 port, "?ttl=%d", ttl);
c8965800
RB
1172 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1173 err = AVERROR_INVALIDDATA;
1174 goto fail;
1617ad97
FB
1175 }
1176 break;
1177 }
c8965800 1178 }
d1ccf0e0 1179
ee0cb67f 1180 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1181 goto fail;
1617ad97
FB
1182 }
1183
30e79845
RB
1184 if (reply->timeout > 0)
1185 rt->timeout = reply->timeout;
1186
2e889ae4 1187 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1188 rt->need_subscription = 1;
1189
53620bba
RB
1190 return 0;
1191
1192fail:
c8965800 1193 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1194 if (rt->rtsp_streams[i]->rtp_handle) {
1195 url_close(rt->rtsp_streams[i]->rtp_handle);
1196 rt->rtsp_streams[i]->rtp_handle = NULL;
1197 }
1198 }
53620bba
RB
1199 return err;
1200}
1201
b8c2c41d
JA
1202void ff_rtsp_close_connections(AVFormatContext *s)
1203{
1204 RTSPState *rt = s->priv_data;
1205 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1206 url_close(rt->rtsp_hd);
6217b645 1207 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1208}
1209
3307e6ea 1210int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1211{
1212 RTSPState *rt = s->priv_data;
921da217
LB
1213 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1214 char *option_list, *option, *filename;
03f8fc08 1215 int port, err, tcp_fd;
354b7573 1216 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1217 int lower_transport_mask = 0;
1cf151e9 1218 char real_challenge[64];
03f8fc08
MS
1219 struct sockaddr_storage peer;
1220 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1221
1222 if (!ff_network_init())
1223 return AVERROR(EIO);
c8965800 1224redirect:
f5d33f52 1225 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1226 /* extract hostname and port */
f3bfe388 1227 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1228 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1229 if (*auth) {
aa8bf2fb 1230 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1231 }
53620bba
RB
1232 if (port < 0)
1233 port = RTSP_DEFAULT_PORT;
1234
1235 /* search for options */
602eb779 1236 option_list = strrchr(path, '?');
53620bba 1237 if (option_list) {
2a21adf9
MS
1238 /* Strip out the RTSP specific options, write out the rest of
1239 * the options back into the same string. */
1240 filename = option_list;
c8965800 1241 while (option_list) {
53620bba 1242 /* move the option pointer */
921da217 1243 option = ++option_list;
53620bba
RB
1244 option_list = strchr(option_list, '&');
1245 if (option_list)
921da217
LB
1246 *option_list = 0;
1247
53620bba 1248 /* handle the options */
c8965800 1249 if (!strcmp(option, "udp")) {
7a033e08 1250 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1251 } else if (!strcmp(option, "multicast")) {
7a033e08 1252 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1253 } else if (!strcmp(option, "tcp")) {
7a033e08 1254 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1255 } else if(!strcmp(option, "http")) {
1256 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1257 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1258 } else {
2a21adf9
MS
1259 /* Write options back into the buffer, using memmove instead
1260 * of strcpy since the strings may overlap. */
1261 int len = strlen(option);
1262 memmove(++filename, option, len);
1263 filename += len;
921da217
LB
1264 if (option_list) *filename = '&';
1265 }
53620bba 1266 }
921da217 1267 *filename = 0;
53620bba
RB
1268 }
1269
90abbdba 1270 if (!lower_transport_mask)
2a1d51c5 1271 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1272
3e24c770 1273 if (s->oformat) {
b7dc88fc
MS
1274 /* Only UDP or TCP - UDP multicast isn't supported. */
1275 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1276 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1277 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1278 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1279 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1280 err = AVERROR(EINVAL);
1281 goto fail;
1282 }
1283 }
1284
4bc5cc23
MS
1285 /* Construct the URI used in request; this is similar to s->filename,
1286 * but with authentication credentials removed and RTSP specific options
1287 * stripped out. */
1288 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1289 host, port, "%s", path);
1290
f5d33f52
JA
1291 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1292 /* set up initial handshake for tunneling */
1293 char httpname[1024];
1294 char sessioncookie[17];
1295 char headers[1024];
1296
10ed37b5 1297 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1298 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1299 av_get_random_seed(), av_get_random_seed());
1300
1301 /* GET requests */
9290f15d 1302 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1303 err = AVERROR(EIO);
1304 goto fail;
1305 }
1306
1307 /* generate GET headers */
1308 snprintf(headers, sizeof(headers),
1309 "x-sessioncookie: %s\r\n"
1310 "Accept: application/x-rtsp-tunnelled\r\n"
1311 "Pragma: no-cache\r\n"
1312 "Cache-Control: no-cache\r\n",
1313 sessioncookie);
00e4a1f4 1314 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1315
1316 /* complete the connection */
9290f15d 1317 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1318 err = AVERROR(EIO);
1319 goto fail;
1320 }
1321
1322 /* POST requests */
9290f15d 1323 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1324 err = AVERROR(EIO);
1325 goto fail;
1326 }
1327
1328 /* generate POST headers */
1329 snprintf(headers, sizeof(headers),
1330 "x-sessioncookie: %s\r\n"
1331 "Content-Type: application/x-rtsp-tunnelled\r\n"
1332 "Pragma: no-cache\r\n"
1333 "Cache-Control: no-cache\r\n"
1334 "Content-Length: 32767\r\n"
1335 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1336 sessioncookie);
00e4a1f4
JA
1337 ff_http_set_headers(rt->rtsp_hd_out, headers);
1338 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1339
a8ead332
MS
1340 /* Initialize the authentication state for the POST session. The HTTP
1341 * protocol implementation doesn't properly handle multi-pass
1342 * authentication for POST requests, since it would require one of
1343 * the following:
1344 * - implementing Expect: 100-continue, which many HTTP servers
1345 * don't support anyway, even less the RTSP servers that do HTTP
1346 * tunneling
1347 * - sending the whole POST data until getting a 401 reply specifying
1348 * what authentication method to use, then resending all that data
1349 * - waiting for potential 401 replies directly after sending the
1350 * POST header (waiting for some unspecified time)
1351 * Therefore, we copy the full auth state, which works for both basic
1352 * and digest. (For digest, we would have to synchronize the nonce
1353 * count variable between the two sessions, if we'd do more requests
1354 * with the original session, though.)
1355 */
1356 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1357
9290f15d
MS
1358 /* complete the connection */
1359 if (url_connect(rt->rtsp_hd_out)) {
1360 err = AVERROR(EIO);
1361 goto fail;
1362 }
f5d33f52 1363 } else {
48e77473 1364 /* open the tcp connection */
41874d0a 1365 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1366 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1367 err = AVERROR(EIO);
1368 goto fail;
1369 }
00e4a1f4 1370 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1371 }
53620bba
RB
1372 rt->seq = 0;
1373
00e4a1f4 1374 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1375 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1376 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1377 NULL, 0, NI_NUMERICHOST);
1378 }
1379
c8965800
RB
1380 /* request options supported by the server; this also detects server
1381 * type */
1cf151e9 1382 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1383 cmd[0] = 0;
2e889ae4 1384 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1385 av_strlcat(cmd,
1386 /**
1387 * The following entries are required for proper
1388 * streaming from a Realmedia server. They are
1389 * interdependent in some way although we currently
1390 * don't quite understand how. Values were copied
1391 * from mplayer SVN r23589.
1392 * @param CompanyID is a 16-byte ID in base64
1393 * @param ClientChallenge is a 16-byte ID in hex
1394 */
1395 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1396 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1397 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1398 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1399 sizeof(cmd));
b17d11c6 1400 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1401 if (reply->status_code != RTSP_STATUS_OK) {
1402 err = AVERROR_INVALIDDATA;
1403 goto fail;
1404 }
1405
1406 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1407 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1408 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1409 continue;
7a86bafa
RB
1410 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1411 rt->server_type = RTSP_SERVER_WMS;
c8965800 1412 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1413 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1414 break;
1415 }
1416
44b70ce5 1417 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1418 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1419 else if (CONFIG_RTSP_MUXER)
c2688f3a 1420 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1421 if (err)
53620bba 1422 goto fail;
53620bba 1423
8a8754d8 1424 do {
c8965800
RB
1425 int lower_transport = ff_log2_tab[lower_transport_mask &
1426 ~(lower_transport_mask - 1)];
8a8754d8 1427
90abbdba 1428 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1429 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1430 real_challenge : NULL);
8a8754d8 1431 if (err < 0)
7e6ca34f 1432 goto fail;
90abbdba
RB
1433 lower_transport_mask &= ~(1 << lower_transport);
1434 if (lower_transport_mask == 0 && err == 1) {
adef229e 1435 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1436 goto fail;
1437 }
1438 } while (err);
53620bba 1439
ff762d6e 1440 rt->state = RTSP_STATE_IDLE;
c8965800 1441 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1442 return 0;
1443 fail:
3307e6ea 1444 ff_rtsp_close_streams(s);
b8c2c41d 1445 ff_rtsp_close_connections(s);
35cfd646 1446 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1447 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1448 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1449 reply->status_code,
1450 s->filename);
1451 goto redirect;
1452 }
57b5555c 1453 ff_network_close();
1617ad97
FB
1454 return err;
1455}
2e802e38 1456#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1457
44b70ce5 1458#if CONFIG_RTPDEC
0e59034e 1459static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1460 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1461{
1462 RTSPState *rt = s->priv_data;
1463 RTSPStream *rtsp_st;
1464 fd_set rfds;
a1ba71aa 1465 int fd, fd_rtcp, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1466 struct timeval tv;
1467
c8965800 1468 for (;;) {
0e59034e
RB
1469 if (url_interrupt_cb())
1470 return AVERROR(EINTR);
321259c1
MS
1471 if (wait_end && wait_end - av_gettime() < 0)
1472 return AVERROR(EAGAIN);
0e59034e
RB
1473 FD_ZERO(&rfds);
1474 if (rt->rtsp_hd) {
1475 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1476 FD_SET(tcp_fd, &rfds);
1477 } else {
1478 fd_max = 0;
1479 tcp_fd = -1;
1480 }
c8965800 1481 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1482 rtsp_st = rt->rtsp_streams[i];
1483 if (rtsp_st->rtp_handle) {
0e59034e 1484 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1485 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1486 if (FFMAX(fd, fd_rtcp) > fd_max)
1487 fd_max = FFMAX(fd, fd_rtcp);
0e59034e 1488 FD_SET(fd, &rfds);
a1ba71aa 1489 FD_SET(fd_rtcp, &rfds);
0e59034e
RB
1490 }
1491 }
1492 tv.tv_sec = 0;
9cba6f5f 1493 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1494 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1495 if (n > 0) {
9cba6f5f 1496 timeout_cnt = 0;
c8965800 1497 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1498 rtsp_st = rt->rtsp_streams[i];
1499 if (rtsp_st->rtp_handle) {
1500 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1501 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1502 if (FD_ISSET(fd_rtcp, &rfds) || FD_ISSET(fd, &rfds)) {
0e59034e
RB
1503 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1504 if (ret > 0) {
1505 *prtsp_st = rtsp_st;
1506 return ret;
1507 }
1508 }
1509 }
1510 }
5fe8021a 1511#if CONFIG_RTSP_DEMUXER
27000636 1512 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1513 RTSPMessageHeader reply;
1514
3032276b
MS
1515 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1516 if (ret < 0)
1517 return ret;
0e59034e 1518 /* XXX: parse message */
c02fd3d2 1519 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1520 return 0;
1521 }
5fe8021a 1522#endif
9cba6f5f 1523 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1524 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1525 } else if (n < 0 && errno != EINTR)
1526 return AVERROR(errno);
0e59034e
RB
1527 }
1528}
1529
0526c6f7 1530int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1531{
1532 RTSPState *rt = s->priv_data;
1533 int ret, len;
321259c1
MS
1534 RTSPStream *rtsp_st, *first_queue_st = NULL;
1535 int64_t wait_end = 0;
0e59034e 1536
b20359f5
JA
1537 if (rt->nb_byes == rt->nb_rtsp_streams)
1538 return AVERROR_EOF;
1539
0e59034e
RB
1540 /* get next frames from the same RTP packet */
1541 if (rt->cur_transport_priv) {
c8965800 1542 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1543 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1544 } else
0e59034e
RB
1545 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1546 if (ret == 0) {
1547 rt->cur_transport_priv = NULL;
1548 return 0;
1549 } else if (ret == 1) {
1550 return 0;
c8965800 1551 } else
0e59034e 1552 rt->cur_transport_priv = NULL;
0e59034e
RB
1553 }
1554
321259c1
MS
1555 if (rt->transport == RTSP_TRANSPORT_RTP) {
1556 int i;
1557 int64_t first_queue_time = 0;
1558 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1559 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1560 int64_t queue_time;
1561 if (!rtpctx)
1562 continue;
1563 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1564 if (queue_time && (queue_time - first_queue_time < 0 ||
1565 !first_queue_time)) {
1566 first_queue_time = queue_time;
1567 first_queue_st = rt->rtsp_streams[i];
1568 }
1569 }
1570 if (first_queue_time)
1571 wait_end = first_queue_time + s->max_delay;
1572 }
1573
0e59034e
RB
1574 /* read next RTP packet */
1575 redo:
96a7c975
MS
1576 if (!rt->recvbuf) {
1577 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1578 if (!rt->recvbuf)
1579 return AVERROR(ENOMEM);
1580 }
1581
0e59034e
RB
1582 switch(rt->lower_transport) {
1583 default:
5fe8021a 1584#if CONFIG_RTSP_DEMUXER
0e59034e 1585 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1586 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1587 break;
5fe8021a 1588#endif
0e59034e
RB
1589 case RTSP_LOWER_TRANSPORT_UDP:
1590 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1591 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
0e59034e
RB
1592 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1593 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1594 break;
1595 }
321259c1
MS
1596 if (len == AVERROR(EAGAIN) && first_queue_st &&
1597 rt->transport == RTSP_TRANSPORT_RTP) {
1598 rtsp_st = first_queue_st;
1599 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1600 goto end;
1601 }
0e59034e
RB
1602 if (len < 0)
1603 return len;
1604 if (len == 0)
1605 return AVERROR_EOF;
c8965800 1606 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1607 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1608 } else {
ad4ad27f 1609 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1610 if (ret < 0) {
1611 /* Either bad packet, or a RTCP packet. Check if the
1612 * first_rtcp_ntp_time field was initialized. */
1613 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1614 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1615 /* first_rtcp_ntp_time has been initialized for this stream,
1616 * copy the same value to all other uninitialized streams,
1617 * in order to map their timestamp origin to the same ntp time
1618 * as this one. */
1619 int i;
3a1cdcc7
MS
1620 AVStream *st = NULL;
1621 if (rtsp_st->stream_index >= 0)
1622 st = s->streams[rtsp_st->stream_index];
2cab6b48 1623 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1624 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1625 AVStream *st2 = NULL;
1626 if (rt->rtsp_streams[i]->stream_index >= 0)
1627 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1628 if (rtpctx2 && st && st2 &&
1629 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1630 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1631 rtpctx2->rtcp_ts_offset = av_rescale_q(
1632 rtpctx->rtcp_ts_offset, st->time_base,
1633 st2->time_base);
1634 }
2cab6b48
MS
1635 }
1636 }
b20359f5
JA
1637 if (ret == -RTCP_BYE) {
1638 rt->nb_byes++;
1639
1640 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1641 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1642
1643 if (rt->nb_byes == rt->nb_rtsp_streams)
1644 return AVERROR_EOF;
1645 }
2cab6b48
MS
1646 }
1647 }
321259c1 1648end:
0e59034e
RB
1649 if (ret < 0)
1650 goto redo;
c8965800 1651 if (ret == 1)
0e59034e
RB
1652 /* more packets may follow, so we save the RTP context */
1653 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1654
1655 return ret;
1656}
44b70ce5 1657#endif /* CONFIG_RTPDEC */
0e59034e 1658
44b70ce5 1659#if CONFIG_SDP_DEMUXER
cb1fdc61 1660static int sdp_probe(AVProbeData *p1)
93ced3e8 1661{
0e1ceacd 1662 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1663
3fbd12d1 1664 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1665 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1666 if (p + sizeof("c=IN IP") - 1 < p_end &&
1667 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1668 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1669
c8965800 1670 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1671 if (++p >= p_end)
cb1fdc61 1672 break;
cb1fdc61
FB
1673 if (*p == '\r')
1674 p++;
1675 }
93ced3e8
FB
1676 return 0;
1677}
1678
c8965800 1679static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1680{
8b1ab7bf 1681 RTSPState *rt = s->priv_data;
93ced3e8
FB
1682 RTSPStream *rtsp_st;
1683 int size, i, err;
1684 char *content;
1685 char url[1024];
1686
57b5555c
MS
1687 if (!ff_network_init())
1688 return AVERROR(EIO);
1689
93ced3e8
FB
1690 /* read the whole sdp file */
1691 /* XXX: better loading */
1692 content = av_malloc(SDP_MAX_SIZE);
899681cd 1693 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1694 if (size <= 0) {
1695 av_free(content);
1696 return AVERROR_INVALIDDATA;
1697 }
1698 content[size] ='\0';
1699
0526c6f7 1700 ff_sdp_parse(s, content);
93ced3e8
FB
1701 av_free(content);
1702
1703 /* open each RTP stream */
c8965800 1704 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1705 char namebuf[50];
8b1ab7bf 1706 rtsp_st = rt->rtsp_streams[i];
115329f1 1707
3fbd12d1
MS
1708 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1709 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1710 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1711 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1712 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1713 rtsp_st->sdp_ttl);
dbf30963 1714 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1715 err = AVERROR_INVALIDDATA;
1716 goto fail;
1717 }
ee0cb67f 1718 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1719 goto fail;
93ced3e8
FB
1720 }
1721 return 0;
c8965800 1722fail:
3307e6ea 1723 ff_rtsp_close_streams(s);
57b5555c 1724 ff_network_close();
93ced3e8
FB
1725 return err;
1726}
1727
93ced3e8
FB
1728static int sdp_read_close(AVFormatContext *s)
1729{
3307e6ea 1730 ff_rtsp_close_streams(s);
57b5555c 1731 ff_network_close();
93ced3e8
FB
1732 return 0;
1733}
1734
ff70e601 1735AVInputFormat sdp_demuxer = {
93ced3e8 1736 "sdp",
bde15e74 1737 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1738 sizeof(RTSPState),
1739 sdp_probe,
1740 sdp_read_header,
0526c6f7 1741 ff_rtsp_fetch_packet,
93ced3e8
FB
1742 sdp_read_close,
1743};
44b70ce5 1744#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1745
44b70ce5 1746#if CONFIG_RTP_DEMUXER
44594cc7
MS
1747static int rtp_probe(AVProbeData *p)
1748{
1749 if (av_strstart(p->filename, "rtp:", NULL))
1750 return AVPROBE_SCORE_MAX;
1751 return 0;
1752}
1753
1754static int rtp_read_header(AVFormatContext *s,
1755 AVFormatParameters *ap)
1756{
1757 uint8_t recvbuf[1500];
1758 char host[500], sdp[500];
1759 int ret, port;
1760 URLContext* in = NULL;
1761 int payload_type;
1762 AVCodecContext codec;
1763 struct sockaddr_storage addr;
1764 ByteIOContext pb;
1765 socklen_t addrlen = sizeof(addr);
1766
1767 if (!ff_network_init())
1768 return AVERROR(EIO);
1769
1770 ret = url_open(&in, s->filename, URL_RDONLY);
1771 if (ret)
1772 goto fail;
1773
1774 while (1) {
1775 ret = url_read(in, recvbuf, sizeof(recvbuf));
1776 if (ret == AVERROR(EAGAIN))
1777 continue;
1778 if (ret < 0)
1779 goto fail;
1780 if (ret < 12) {
1781 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1782 continue;
1783 }
1784
1785 if ((recvbuf[0] & 0xc0) != 0x80) {
1786 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1787 "received\n");
1788 continue;
1789 }
1790
1791 payload_type = recvbuf[1] & 0x7f;
1792 break;
1793 }
1794 getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
1795 url_close(in);
1796 in = NULL;
1797
1798 memset(&codec, 0, sizeof(codec));
1799 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1800 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1801 "without an SDP file describing it\n",
1802 payload_type);
1803 goto fail;
1804 }
1805 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1806 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1807 "properly you need an SDP file "
1808 "describing it\n");
1809 }
1810
1811 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1812 NULL, 0, s->filename);
1813
1814 snprintf(sdp, sizeof(sdp),
1815 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1816 addr.ss_family == AF_INET ? 4 : 6, host,
1817 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1818 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1819 port, payload_type);
1820 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1821
1822 init_put_byte(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
1823 s->pb = &pb;
1824
1825 /* sdp_read_header initializes this again */
1826 ff_network_close();
1827
1828 ret = sdp_read_header(s, ap);
1829 s->pb = NULL;
1830 return ret;
1831
1832fail:
1833 if (in)
1834 url_close(in);
1835 ff_network_close();
1836 return ret;
1837}
1838
1839AVInputFormat rtp_demuxer = {
1840 "rtp",
1841 NULL_IF_CONFIG_SMALL("RTP input format"),
1842 sizeof(RTSPState),
1843 rtp_probe,
1844 rtp_read_header,
0526c6f7 1845 ff_rtsp_fetch_packet,
44594cc7
MS
1846 sdp_read_close,
1847 .flags = AVFMT_NOFILE,
1848};
44b70ce5 1849#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1850