Handle IPv6 in the SDP demuxer
[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"
4934884a 42
1617ad97 43//#define DEBUG
b6892136 44//#define DEBUG_RTP_TCP
1617ad97 45
c482500f 46#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 47int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 48#endif
85fb7b34 49
c2bfd816 50/* Timeout values for socket select, in ms,
9cba6f5f
SG
51 * and read_packet(), in seconds */
52#define SELECT_TIMEOUT_MS 100
53#define READ_PACKET_TIMEOUT_S 10
54#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / SELECT_TIMEOUT_MS
91af5601 55#define SDP_MAX_SIZE 16384
9cba6f5f 56
1ef36a70
RB
57static void get_word_until_chars(char *buf, int buf_size,
58 const char *sep, const char **pp)
1617ad97
FB
59{
60 const char *p;
61 char *q;
62
63 p = *pp;
30619e6e 64 p += strspn(p, SPACE_CHARS);
1617ad97
FB
65 q = buf;
66 while (!strchr(sep, *p) && *p != '\0') {
67 if ((q - buf) < buf_size - 1)
68 *q++ = *p;
69 p++;
70 }
71 if (buf_size > 0)
72 *q = '\0';
73 *pp = p;
74}
75
1ef36a70
RB
76static void get_word_sep(char *buf, int buf_size, const char *sep,
77 const char **pp)
1617ad97 78{
1ef36a70
RB
79 if (**pp == '/') (*pp)++;
80 get_word_until_chars(buf, buf_size, sep, pp);
81}
1617ad97 82
1ef36a70
RB
83static void get_word(char *buf, int buf_size, const char **pp)
84{
85 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
86}
87
c8965800 88/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3
RB
89static int sdp_parse_rtpmap(AVFormatContext *s,
90 AVCodecContext *codec, RTSPStream *rtsp_st,
c8965800 91 int payload_type, const char *p)
93ced3e8
FB
92{
93 char buf[256];
d1ccf0e0
RD
94 int i;
95 AVCodec *c;
7b49ce2e 96 const char *c_name;
93ced3e8 97
d1ccf0e0 98 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
99 * see if we can handle this kind of payload.
100 * The space should normally not be there but some Real streams or
101 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
102 * have a trailing space. */
103 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 104 if (payload_type >= RTP_PT_PRIVATE) {
c8965800
RB
105 RTPDynamicProtocolHandler *handler;
106 for (handler = RTPFirstDynamicPayloadHandler;
107 handler; handler = handler->next) {
108 if (!strcasecmp(buf, handler->enc_name) &&
109 codec->codec_type == handler->codec_type) {
110 codec->codec_id = handler->codec_id;
111 rtsp_st->dynamic_handler = handler;
112 if (handler->open)
113 rtsp_st->dynamic_protocol_context = handler->open();
d1ccf0e0
RD
114 break;
115 }
4934884a 116 }
93ced3e8 117 } else {
c8965800
RB
118 /* We are in a standard case
119 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 120 /* search into AVRtpPayloadTypes[] */
7ed19d7f 121 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
122 }
123
124 c = avcodec_find_decoder(codec->codec_id);
125 if (c && c->name)
7b49ce2e 126 c_name = c->name;
d1ccf0e0 127 else
170870b7 128 c_name = "(null)";
d1ccf0e0 129
7515ed0c
RB
130 get_word_sep(buf, sizeof(buf), "/", &p);
131 i = atoi(buf);
132 switch (codec->codec_type) {
72415b2a 133 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
134 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
135 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
136 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
137 if (i > 0) {
138 codec->sample_rate = i;
139 get_word_sep(buf, sizeof(buf), "/", &p);
140 i = atoi(buf);
141 if (i > 0)
142 codec->channels = i;
143 // TODO: there is a bug here; if it is a mono stream, and
144 // less than 22000Hz, faad upconverts to stereo and twice
145 // the frequency. No problem, but the sample rate is being
146 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 147 }
7515ed0c
RB
148 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
149 codec->sample_rate);
150 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
151 codec->channels);
152 break;
72415b2a 153 case AVMEDIA_TYPE_VIDEO:
7515ed0c
RB
154 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
155 break;
156 default:
157 break;
158 }
159 return 0;
93ced3e8
FB
160}
161
c2bfd816 162/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
163 * is broken out as a function because it is used in rtp_h264.c, which is
164 * forthcoming. */
3307e6ea 165int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 166 char *value, int value_size)
d0deedcb 167{
30619e6e 168 *p += strspn(*p, SPACE_CHARS);
c8965800 169 if (**p) {
d0deedcb
RM
170 get_word_sep(attr, attr_size, "=", p);
171 if (**p == '=')
172 (*p)++;
173 get_word_sep(value, value_size, ";", p);
174 if (**p == ';')
175 (*p)++;
176 return 1;
177 }
178 return 0;
179}
180
debe86bf 181/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
31693e00
RM
182 * and end time.
183 * Used for seeking in the rtp stream.
184 */
185static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
186{
187 char buf[256];
188
30619e6e 189 p += strspn(p, SPACE_CHARS);
f7d78f36 190 if (!av_stristart(p, "npt=", &p))
31693e00
RM
191 return;
192
193 *start = AV_NOPTS_VALUE;
194 *end = AV_NOPTS_VALUE;
195
196 get_word_sep(buf, sizeof(buf), "-", &p);
197 *start = parse_date(buf, 1);
198 if (*p == '-') {
199 p++;
200 get_word_sep(buf, sizeof(buf), "-", &p);
201 *end = parse_date(buf, 1);
202 }
203// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
204// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
205}
206
3fbd12d1
MS
207static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
208{
209 struct addrinfo hints, *ai = NULL;
210 memset(&hints, 0, sizeof(hints));
211 hints.ai_flags = AI_NUMERICHOST;
212 if (getaddrinfo(buf, NULL, &hints, &ai))
213 return -1;
214 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
215 freeaddrinfo(ai);
216 return 0;
217}
218
93ced3e8
FB
219typedef struct SDPParseState {
220 /* SDP only */
3fbd12d1 221 struct sockaddr_storage default_ip;
c8965800
RB
222 int default_ttl;
223 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
224} SDPParseState;
225
226static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
227 int letter, const char *buf)
228{
8b1ab7bf 229 RTSPState *rt = s->priv_data;
1617ad97
FB
230 char buf1[64], st_type[64];
231 const char *p;
72415b2a 232 enum AVMediaType codec_type;
fb65d2ca 233 int payload_type, i;
1617ad97
FB
234 AVStream *st;
235 RTSPStream *rtsp_st;
3fbd12d1 236 struct sockaddr_storage sdp_ip;
93ced3e8
FB
237 int ttl;
238
67c9cd69 239 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
240
241 p = buf;
cb760a47
RB
242 if (s1->skip_media && letter != 'm')
243 return;
c8965800 244 switch (letter) {
93ced3e8
FB
245 case 'c':
246 get_word(buf1, sizeof(buf1), &p);
247 if (strcmp(buf1, "IN") != 0)
248 return;
249 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 250 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
251 return;
252 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 253 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
254 return;
255 ttl = 16;
256 if (*p == '/') {
257 p++;
258 get_word_sep(buf1, sizeof(buf1), "/", &p);
259 ttl = atoi(buf1);
260 }
261 if (s->nb_streams == 0) {
262 s1->default_ip = sdp_ip;
263 s1->default_ttl = ttl;
264 } else {
265 st = s->streams[s->nb_streams - 1];
266 rtsp_st = st->priv_data;
267 rtsp_st->sdp_ip = sdp_ip;
268 rtsp_st->sdp_ttl = ttl;
269 }
270 break;
1617ad97 271 case 's':
2ef6c124 272 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
273 break;
274 case 'i':
275 if (s->nb_streams == 0) {
2ef6c124 276 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
277 break;
278 }
279 break;
280 case 'm':
281 /* new stream */
cb760a47 282 s1->skip_media = 0;
1617ad97
FB
283 get_word(st_type, sizeof(st_type), &p);
284 if (!strcmp(st_type, "audio")) {
72415b2a 285 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 286 } else if (!strcmp(st_type, "video")) {
72415b2a 287 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 288 } else if (!strcmp(st_type, "application")) {
72415b2a 289 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 290 } else {
cb760a47 291 s1->skip_media = 1;
1617ad97
FB
292 return;
293 }
1617ad97
FB
294 rtsp_st = av_mallocz(sizeof(RTSPStream));
295 if (!rtsp_st)
296 return;
8b1ab7bf
FB
297 rtsp_st->stream_index = -1;
298 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
299
300 rtsp_st->sdp_ip = s1->default_ip;
301 rtsp_st->sdp_ttl = s1->default_ttl;
302
93ced3e8
FB
303 get_word(buf1, sizeof(buf1), &p); /* port */
304 rtsp_st->sdp_port = atoi(buf1);
305
306 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 307
93ced3e8
FB
308 /* XXX: handle list of formats */
309 get_word(buf1, sizeof(buf1), &p); /* format list */
310 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 311
7ed19d7f 312 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
313 /* no corresponding stream */
314 } else {
315 st = av_new_stream(s, 0);
316 if (!st)
317 return;
318 st->priv_data = rtsp_st;
319 rtsp_st->stream_index = st->index;
01f4895c 320 st->codec->codec_type = codec_type;
d1ccf0e0 321 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 322 /* if standard payload type, we can find the codec right now */
bf6d9818 323 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
324 }
325 }
1617ad97 326 /* put a default control url */
00eb13e0 327 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 328 sizeof(rtsp_st->control_url));
1617ad97
FB
329 break;
330 case 'a':
00eb13e0
AS
331 if (av_strstart(p, "control:", &p)) {
332 if (s->nb_streams == 0) {
333 if (!strncmp(p, "rtsp://", 7))
334 av_strlcpy(rt->control_uri, p,
335 sizeof(rt->control_uri));
336 } else {
1617ad97
FB
337 char proto[32];
338 /* get the control url */
339 st = s->streams[s->nb_streams - 1];
340 rtsp_st = st->priv_data;
115329f1 341
1617ad97 342 /* XXX: may need to add full url resolution */
f3bfe388 343 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
f984dcf6 344 NULL, NULL, 0, p);
1617ad97
FB
345 if (proto[0] == '\0') {
346 /* relative control URL */
00eb13e0 347 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
c8965800
RB
348 av_strlcat(rtsp_st->control_url, "/",
349 sizeof(rtsp_st->control_url));
350 av_strlcat(rtsp_st->control_url, p,
351 sizeof(rtsp_st->control_url));
352 } else
353 av_strlcpy(rtsp_st->control_url, p,
354 sizeof(rtsp_st->control_url));
00eb13e0 355 }
83d14c85 356 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 357 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 358 get_word(buf1, sizeof(buf1), &p);
93ced3e8 359 payload_type = atoi(buf1);
83d14c85 360 st = s->streams[s->nb_streams - 1];
ff16f551 361 rtsp_st = st->priv_data;
8f3c87f3 362 sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p);
7fc8ac7f
JA
363 } else if (av_strstart(p, "fmtp:", &p) ||
364 av_strstart(p, "framesize:", &p)) {
93ced3e8 365 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
366 // let dynamic protocol handlers have a stab at the line.
367 get_word(buf1, sizeof(buf1), &p);
368 payload_type = atoi(buf1);
c8965800
RB
369 for (i = 0; i < s->nb_streams; i++) {
370 st = s->streams[i];
d0deedcb 371 rtsp_st = st->priv_data;
c8965800
RB
372 if (rtsp_st->sdp_payload_type == payload_type &&
373 rtsp_st->dynamic_handler &&
374 rtsp_st->dynamic_handler->parse_sdp_a_line)
375 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
376 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 377 }
c8965800 378 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
379 int64_t start, end;
380
381 // this is so that seeking on a streamed file can work.
382 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
383 s->start_time = start;
384 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
385 s->duration = (end == AV_NOPTS_VALUE) ?
386 AV_NOPTS_VALUE : end - start;
119b4668
RB
387 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
388 if (atoi(p) == 1)
389 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
390 } else {
391 if (rt->server_type == RTSP_SERVER_WMS)
392 ff_wms_parse_sdp_a_line(s, p);
393 if (s->nb_streams > 0) {
c4a3d032
RB
394 if (rt->server_type == RTSP_SERVER_REAL)
395 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
396
397 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
398 if (rtsp_st->dynamic_handler &&
399 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
400 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
401 s->nb_streams - 1,
c4a3d032 402 rtsp_st->dynamic_protocol_context, buf);
1a30d541 403 }
1617ad97
FB
404 }
405 break;
406 }
407}
408
5c91a675 409static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
410{
411 const char *p;
412 int letter;
9211bcdd
RB
413 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
414 * contain long SDP lines containing complete ASF Headers (several
415 * kB) or arrays of MDPR (RM stream descriptor) headers plus
416 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
417 * buffer is large.
418 *
afcea58c
JA
419 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
420 * in rtpdec_xiph.c. */
373afbaf 421 char buf[16384], *q;
93ced3e8 422 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 423
93ced3e8 424 memset(s1, 0, sizeof(SDPParseState));
1617ad97 425 p = content;
c8965800 426 for (;;) {
30619e6e 427 p += strspn(p, SPACE_CHARS);
1617ad97
FB
428 letter = *p;
429 if (letter == '\0')
430 break;
431 p++;
432 if (*p != '=')
433 goto next_line;
434 p++;
435 /* get the content */
436 q = buf;
b6892136 437 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
438 if ((q - buf) < sizeof(buf) - 1)
439 *q++ = *p;
440 p++;
441 }
442 *q = '\0';
93ced3e8 443 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
444 next_line:
445 while (*p != '\n' && *p != '\0')
446 p++;
447 if (*p == '\n')
448 p++;
449 }
450 return 0;
451}
452
1ced9da3 453/* close and free RTSP streams */
3307e6ea 454void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 455{
52aa4338 456 RTSPState *rt = s->priv_data;
1ced9da3
LA
457 int i;
458 RTSPStream *rtsp_st;
459
c8965800 460 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
461 rtsp_st = rt->rtsp_streams[i];
462 if (rtsp_st) {
463 if (rtsp_st->transport_priv) {
fd450a51
MS
464 if (s->oformat) {
465 AVFormatContext *rtpctx = rtsp_st->transport_priv;
466 av_write_trailer(rtpctx);
b7dc88fc
MS
467 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
468 uint8_t *ptr;
469 url_close_dyn_buf(rtpctx->pb, &ptr);
470 av_free(ptr);
471 } else {
685e76b5 472 url_fclose(rtpctx->pb);
b7dc88fc 473 }
f86f6656
MS
474 av_metadata_free(&rtpctx->streams[0]->metadata);
475 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
476 av_free(rtpctx->streams[0]);
477 av_free(rtpctx);
478 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
479 ff_rdt_parse_close(rtsp_st->transport_priv);
480 else
481 rtp_parse_close(rtsp_st->transport_priv);
482 }
483 if (rtsp_st->rtp_handle)
484 url_close(rtsp_st->rtp_handle);
485 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
486 rtsp_st->dynamic_handler->close(
487 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
488 }
489 }
490 av_free(rt->rtsp_streams);
491 if (rt->asf_ctx) {
492 av_close_input_stream (rt->asf_ctx);
493 rt->asf_ctx = NULL;
494 }
1ced9da3
LA
495}
496
5c7fd910
MS
497static void *rtsp_rtp_mux_open(AVFormatContext *s, AVStream *st,
498 URLContext *handle)
499{
c07c6f81 500 RTSPState *rt = s->priv_data;
fd450a51
MS
501 AVFormatContext *rtpctx;
502 int ret;
503 AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
504
505 if (!rtp_format)
506 return NULL;
507
508 /* Allocate an AVFormatContext for each output stream */
509 rtpctx = avformat_alloc_context();
510 if (!rtpctx)
511 return NULL;
512
513 rtpctx->oformat = rtp_format;
514 if (!av_new_stream(rtpctx, 0)) {
515 av_free(rtpctx);
516 return NULL;
517 }
518 /* Copy the max delay setting; the rtp muxer reads this. */
519 rtpctx->max_delay = s->max_delay;
520 /* Copy other stream parameters. */
521 rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
522
c07c6f81
MS
523 /* Set the synchronized start time. */
524 rtpctx->start_time_realtime = rt->start_time;
525
fd450a51
MS
526 /* Remove the local codec, link to the original codec
527 * context instead, to give the rtp muxer access to
528 * codec parameters. */
529 av_free(rtpctx->streams[0]->codec);
530 rtpctx->streams[0]->codec = st->codec;
531
b7dc88fc 532 if (handle) {
685e76b5 533 url_fdopen(&rtpctx->pb, handle);
b7dc88fc
MS
534 } else
535 url_open_dyn_packet_buf(&rtpctx->pb, RTSP_TCP_MAX_PACKET_SIZE);
fd450a51
MS
536 ret = av_write_header(rtpctx);
537
538 if (ret) {
b7dc88fc 539 if (handle) {
685e76b5 540 url_fclose(rtpctx->pb);
b7dc88fc
MS
541 } else {
542 uint8_t *ptr;
543 url_close_dyn_buf(rtpctx->pb, &ptr);
544 av_free(ptr);
545 }
fd450a51
MS
546 av_free(rtpctx->streams[0]);
547 av_free(rtpctx);
548 return NULL;
549 }
550
551 /* Copy the RTP AVStream timebase back to the original AVStream */
552 st->time_base = rtpctx->streams[0]->time_base;
553 return rtpctx;
554}
555
c8965800 556static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
557{
558 RTSPState *rt = s->priv_data;
559 AVStream *st = NULL;
560
561 /* open the RTP context */
562 if (rtsp_st->stream_index >= 0)
563 st = s->streams[rtsp_st->stream_index];
564 if (!st)
565 s->ctx_flags |= AVFMTCTX_NOHEADER;
566
fd450a51
MS
567 if (s->oformat) {
568 rtsp_st->transport_priv = rtsp_rtp_mux_open(s, st, rtsp_st->rtp_handle);
c2bfd816 569 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51
MS
570 rtsp_st->rtp_handle = NULL;
571 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
572 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
573 rtsp_st->dynamic_protocol_context,
574 rtsp_st->dynamic_handler);
575 else
576 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
ca937a55 577 rtsp_st->sdp_payload_type);
1ced9da3
LA
578
579 if (!rtsp_st->transport_priv) {
580 return AVERROR(ENOMEM);
581 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
c8965800 582 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
583 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
584 rtsp_st->dynamic_protocol_context,
585 rtsp_st->dynamic_handler);
586 }
587 }
588
589 return 0;
590}
591
6f5a3d0a 592#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1ced9da3
LA
593static int rtsp_probe(AVProbeData *p)
594{
595 if (av_strstart(p->filename, "rtsp:", NULL))
596 return AVPROBE_SCORE_MAX;
597 return 0;
598}
599
1617ad97
FB
600static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
601{
602 const char *p;
603 int v;
604
605 p = *pp;
30619e6e 606 p += strspn(p, SPACE_CHARS);
1617ad97
FB
607 v = strtol(p, (char **)&p, 10);
608 if (*p == '-') {
609 p++;
610 *min_ptr = v;
611 v = strtol(p, (char **)&p, 10);
612 *max_ptr = v;
613 } else {
614 *min_ptr = v;
615 *max_ptr = v;
616 }
617 *pp = p;
618}
619
620/* XXX: only one transport specification is parsed */
a9e534d5 621static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
622{
623 char transport_protocol[16];
624 char profile[16];
625 char lower_transport[16];
626 char parameter[16];
627 RTSPTransportField *th;
628 char buf[256];
115329f1 629
1617ad97 630 reply->nb_transports = 0;
115329f1 631
c8965800 632 for (;;) {
30619e6e 633 p += strspn(p, SPACE_CHARS);
1617ad97
FB
634 if (*p == '\0')
635 break;
636
637 th = &reply->transports[reply->nb_transports];
638
115329f1 639 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 640 "/", &p);
e1502118 641 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
642 get_word_sep(profile, sizeof(profile), "/;,", &p);
643 lower_transport[0] = '\0';
644 /* rtp/avp/<protocol> */
645 if (*p == '/') {
7ecc634e
LB
646 get_word_sep(lower_transport, sizeof(lower_transport),
647 ";,", &p);
119b4668
RB
648 }
649 th->transport = RTSP_TRANSPORT_RTP;
650 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
651 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 652 /* x-pn-tng/<protocol> */
e1502118
LB
653 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
654 profile[0] = '\0';
119b4668 655 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 656 }
b6892136 657 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 658 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 659 else
90abbdba 660 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 661
1617ad97
FB
662 if (*p == ';')
663 p++;
664 /* get each parameter */
665 while (*p != '\0' && *p != ',') {
666 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
667 if (!strcmp(parameter, "port")) {
668 if (*p == '=') {
669 p++;
670 rtsp_parse_range(&th->port_min, &th->port_max, &p);
671 }
672 } else if (!strcmp(parameter, "client_port")) {
673 if (*p == '=') {
674 p++;
115329f1 675 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
676 &th->client_port_max, &p);
677 }
678 } else if (!strcmp(parameter, "server_port")) {
679 if (*p == '=') {
680 p++;
115329f1 681 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
682 &th->server_port_max, &p);
683 }
684 } else if (!strcmp(parameter, "interleaved")) {
685 if (*p == '=') {
686 p++;
115329f1 687 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
688 &th->interleaved_max, &p);
689 }
690 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
691 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
692 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
693 } else if (!strcmp(parameter, "ttl")) {
694 if (*p == '=') {
695 p++;
696 th->ttl = strtol(p, (char **)&p, 10);
697 }
698 } else if (!strcmp(parameter, "destination")) {
699 struct in_addr ipaddr;
700
701 if (*p == '=') {
702 p++;
703 get_word_sep(buf, sizeof(buf), ";,", &p);
ac11d562 704 if (ff_inet_aton(buf, &ipaddr))
1617ad97
FB
705 th->destination = ntohl(ipaddr.s_addr);
706 }
707 }
708 while (*p != ';' && *p != '\0' && *p != ',')
709 p++;
710 if (*p == ';')
711 p++;
712 }
713 if (*p == ',')
714 p++;
715
716 reply->nb_transports++;
717 }
718}
719
2626308a
MS
720void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
721 HTTPAuthState *auth_state)
1617ad97
FB
722{
723 const char *p;
724
725 /* NOTE: we do case independent match for broken servers */
726 p = buf;
f7d78f36 727 if (av_stristart(p, "Session:", &p)) {
30e79845 728 int t;
1617ad97 729 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
730 if (av_stristart(p, ";timeout=", &p) &&
731 (t = strtol(p, NULL, 10)) > 0) {
732 reply->timeout = t;
733 }
f7d78f36 734 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 735 reply->content_length = strtol(p, NULL, 10);
f7d78f36 736 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 737 rtsp_parse_transport(reply, p);
f7d78f36 738 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 739 reply->seq = strtol(p, NULL, 10);
f7d78f36 740 } else if (av_stristart(p, "Range:", &p)) {
31693e00 741 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 742 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 743 p += strspn(p, SPACE_CHARS);
30aa6aed 744 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 745 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 746 p += strspn(p, SPACE_CHARS);
7a86bafa 747 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
748 } else if (av_stristart(p, "Notice:", &p) ||
749 av_stristart(p, "X-Notice:", &p)) {
750 reply->notice = strtol(p, NULL, 10);
d243ba30 751 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 752 p += strspn(p, SPACE_CHARS);
d243ba30 753 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a 754 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
30619e6e 755 p += strspn(p, SPACE_CHARS);
2626308a
MS
756 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
757 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
30619e6e 758 p += strspn(p, SPACE_CHARS);
2626308a 759 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
1617ad97
FB
760 }
761}
762
b7b8fc34 763/* skip a RTP/TCP interleaved packet */
ec55edba 764void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
765{
766 RTSPState *rt = s->priv_data;
767 int ret, len, len1;
768 uint8_t buf[1024];
769
0e848977 770 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
771 if (ret != 3)
772 return;
80fb8234 773 len = AV_RB16(buf + 1);
67c9cd69
BC
774
775 dprintf(s, "skipping RTP packet len=%d\n", len);
776
b7b8fc34
FB
777 /* skip payload */
778 while (len > 0) {
779 len1 = len;
780 if (len1 > sizeof(buf))
781 len1 = sizeof(buf);
0e848977 782 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
783 if (ret != len1)
784 return;
785 len -= len1;
786 }
787}
1617ad97 788
3307e6ea 789int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
790 unsigned char **content_ptr,
791 int return_on_interleaved_data)
1617ad97
FB
792{
793 RTSPState *rt = s->priv_data;
794 char buf[4096], buf1[1024], *q;
795 unsigned char ch;
796 const char *p;
7e726132 797 int ret, content_length, line_count = 0;
1617ad97
FB
798 unsigned char *content = NULL;
799
d541a7d2 800 memset(reply, 0, sizeof(*reply));
1617ad97 801
1617ad97 802 /* parse reply (XXX: use buffers) */
1617ad97 803 rt->last_reply[0] = '\0';
c8965800 804 for (;;) {
1617ad97 805 q = buf;
c8965800 806 for (;;) {
0e848977 807 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 808#ifdef DEBUG_RTP_TCP
67c9cd69 809 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
810#endif
811 if (ret != 1)
2401660d 812 return AVERROR_EOF;
1617ad97
FB
813 if (ch == '\n')
814 break;
b7b8fc34
FB
815 if (ch == '$') {
816 /* XXX: only parse it if first char on line ? */
7e726132
RB
817 if (return_on_interleaved_data) {
818 return 1;
819 } else
ec55edba 820 ff_rtsp_skip_packet(s);
b7b8fc34 821 } else if (ch != '\r') {
1617ad97
FB
822 if ((q - buf) < sizeof(buf) - 1)
823 *q++ = ch;
824 }
825 }
826 *q = '\0';
67c9cd69
BC
827
828 dprintf(s, "line='%s'\n", buf);
829
1617ad97
FB
830 /* test if last line */
831 if (buf[0] == '\0')
832 break;
833 p = buf;
834 if (line_count == 0) {
835 /* get reply code */
836 get_word(buf1, sizeof(buf1), &p);
837 get_word(buf1, sizeof(buf1), &p);
838 reply->status_code = atoi(buf1);
d93fdcbf 839 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 840 } else {
2626308a 841 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
842 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
843 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
844 }
845 line_count++;
846 }
115329f1 847
1617ad97 848 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 849 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 850
1617ad97
FB
851 content_length = reply->content_length;
852 if (content_length > 0) {
853 /* leave some room for a trailing '\0' (useful for simple parsing) */
854 content = av_malloc(content_length + 1);
0e848977 855 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
856 content[content_length] = '\0';
857 }
858 if (content_ptr)
859 *content_ptr = content;
e2e2e7dd
AB
860 else
861 av_free(content);
7e726132 862
7ed8211b
LB
863 if (rt->seq != reply->seq) {
864 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
865 rt->seq, reply->seq);
866 }
867
fccb1770
RB
868 /* EOS */
869 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
870 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 871 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 872 rt->state = RTSP_STATE_IDLE;
c8965800 873 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 874 return AVERROR(EIO); /* data or server error */
c8965800 875 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
876 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
877 return AVERROR(EPERM);
878
7e726132 879 return 0;
1617ad97
FB
880}
881
d0382374 882int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
883 const char *method, const char *url,
884 const char *headers,
885 const unsigned char *send_content,
886 int send_content_length)
29b9f58b
RB
887{
888 RTSPState *rt = s->priv_data;
f5d33f52
JA
889 char buf[4096], *out_buf;
890 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 891
f5d33f52
JA
892 /* Add in RTSP headers */
893 out_buf = buf;
29b9f58b 894 rt->seq++;
b17d11c6
MS
895 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
896 if (headers)
897 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 898 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
899 if (rt->session_id[0] != '\0' && (!headers ||
900 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 901 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 902 }
aa8bf2fb
MS
903 if (rt->auth[0]) {
904 char *str = ff_http_auth_create_response(&rt->auth_state,
905 rt->auth, url, method);
906 if (str)
907 av_strlcat(buf, str, sizeof(buf));
908 av_free(str);
909 }
dfd017bf
MS
910 if (send_content_length > 0 && send_content)
911 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 912 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 913
f5d33f52
JA
914 /* base64 encode rtsp if tunneling */
915 if (rt->control_transport == RTSP_MODE_TUNNEL) {
916 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
917 out_buf = base64buf;
918 }
919
67c9cd69
BC
920 dprintf(s, "Sending:\n%s--\n", buf);
921
f5d33f52
JA
922 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
923 if (send_content_length > 0 && send_content) {
924 if (rt->control_transport == RTSP_MODE_TUNNEL) {
925 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
926 "with content data not supported\n");
927 return AVERROR_PATCHWELCOME;
928 }
b8c2c41d 929 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 930 }
30e79845 931 rt->last_cmd_time = av_gettime();
d0382374
JA
932
933 return 0;
30e79845
RB
934}
935
d0382374 936int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 937 const char *url, const char *headers)
dfd017bf 938{
d0382374 939 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
940}
941
d0382374 942int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
943 const char *headers, RTSPMessageHeader *reply,
944 unsigned char **content_ptr)
30e79845 945{
d0382374 946 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 947 content_ptr, NULL, 0);
29b9f58b
RB
948}
949
d0382374 950int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
951 const char *method, const char *url,
952 const char *header,
953 RTSPMessageHeader *reply,
954 unsigned char **content_ptr,
955 const unsigned char *send_content,
956 int send_content_length)
dfd017bf 957{
30af0779
MS
958 RTSPState *rt = s->priv_data;
959 HTTPAuthType cur_auth_type;
d0382374 960 int ret;
30af0779
MS
961
962retry:
963 cur_auth_type = rt->auth_state.auth_type;
d0382374 964 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
965 send_content,
966 send_content_length)))
d0382374 967 return ret;
dfd017bf 968
d0382374
JA
969 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
970 return ret;
30af0779
MS
971
972 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
973 rt->auth_state.auth_type != HTTP_AUTH_NONE)
974 goto retry;
d0382374 975
bf55cf19 976 if (reply->status_code > 400){
d93fdcbf 977 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 978 method,
d93fdcbf
LB
979 reply->status_code,
980 reply->reason);
bf55cf19
LB
981 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
982 }
983
d0382374 984 return 0;
dfd017bf
MS
985}
986
53620bba 987/**
32e543f8 988 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 989 */
c8965800
RB
990static int make_setup_request(AVFormatContext *s, const char *host, int port,
991 int lower_transport, const char *real_challenge)
1617ad97
FB
992{
993 RTSPState *rt = s->priv_data;
f830c9a4 994 int rtx, j, i, err, interleave = 0;
1617ad97 995 RTSPStream *rtsp_st;
a9e534d5 996 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 997 char cmd[2048];
e9dea59f
RB
998 const char *trans_pref;
999
119b4668 1000 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1001 trans_pref = "x-pn-tng";
1002 else
1003 trans_pref = "RTP/AVP";
115329f1 1004
30e79845
RB
1005 /* default timeout: 1 minute */
1006 rt->timeout = 60;
1007
1617ad97
FB
1008 /* for each stream, make the setup request */
1009 /* XXX: we assume the same server is used for the control of each
c8965800 1010 * RTSP stream */
d1ccf0e0 1011
c8965800 1012 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1013 char transport[2048];
1014
f830c9a4
RB
1015 /**
1016 * WMS serves all UDP data over a single connection, the RTX, which
1017 * isn't necessarily the first in the SDP but has to be the first
1018 * to be set up, else the second/third SETUP will fail with a 461.
1019 */
1020 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1021 rt->server_type == RTSP_SERVER_WMS) {
1022 if (i == 0) {
1023 /* rtx first */
1024 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1025 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1026 if (len >= 4 &&
c8965800
RB
1027 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1028 "/rtx"))
f830c9a4
RB
1029 break;
1030 }
1031 if (rtx == rt->nb_rtsp_streams)
1032 return -1; /* no RTX found */
1033 rtsp_st = rt->rtsp_streams[rtx];
1034 } else
1035 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1036 } else
2fea9650 1037 rtsp_st = rt->rtsp_streams[i];
1617ad97 1038
1617ad97 1039 /* RTP/UDP */
90abbdba 1040 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1041 char buf[256];
85fb7b34 1042
f830c9a4
RB
1043 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1044 port = reply->transports[0].client_port_min;
1045 goto have_port;
1046 }
1047
85fb7b34 1048 /* first try in specified port range */
d1ccf0e0 1049 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1050 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1051 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1052 "?localport=%d", j);
c8965800
RB
1053 /* we will use two ports per rtp stream (rtp and rtcp) */
1054 j += 2;
1055 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1056 goto rtp_opened;
1057 }
1617ad97 1058 }
85fb7b34 1059
c8965800
RB
1060#if 0
1061 /* then try on any port */
1062 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1063 err = AVERROR_INVALIDDATA;
1064 goto fail;
1065 }
1066#endif
85fb7b34
FB
1067
1068 rtp_opened:
8b1ab7bf 1069 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1070 have_port:
0ad306bc 1071 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1072 "%s/UDP;", trans_pref);
1073 if (rt->server_type != RTSP_SERVER_REAL)
1074 av_strlcat(transport, "unicast;", sizeof(transport));
1075 av_strlcatf(transport, sizeof(transport),
1076 "client_port=%d", port);
f830c9a4
RB
1077 if (rt->transport == RTSP_TRANSPORT_RTP &&
1078 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1079 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1080 }
1081
1082 /* RTP/TCP */
90abbdba 1083 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1084 /** For WMS streams, the application streams are only used for
1085 * UDP. When trying to set it up for TCP streams, the server
1086 * will return an error. Therefore, we skip those streams. */
1087 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1088 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1089 AVMEDIA_TYPE_DATA)
090438cc 1090 continue;
0ad306bc 1091 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1092 "%s/TCP;", trans_pref);
1093 if (rt->server_type == RTSP_SERVER_WMS)
1094 av_strlcat(transport, "unicast;", sizeof(transport));
1095 av_strlcatf(transport, sizeof(transport),
1096 "interleaved=%d-%d",
1097 interleave, interleave + 1);
1098 interleave += 2;
1617ad97
FB
1099 }
1100
90abbdba 1101 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1102 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1103 "%s/UDP;multicast", trans_pref);
1617ad97 1104 }
69adcc4f
MS
1105 if (s->oformat) {
1106 av_strlcat(transport, ";mode=receive", sizeof(transport));
1107 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1108 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1109 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1110 snprintf(cmd, sizeof(cmd),
b6892136 1111 "Transport: %s\r\n",
b17d11c6 1112 transport);
2e889ae4 1113 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1114 char real_res[41], real_csum[9];
1115 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1116 real_challenge);
1117 av_strlcatf(cmd, sizeof(cmd),
1118 "If-Match: %s\r\n"
1119 "RealChallenge2: %s, sd=%s\r\n",
1120 rt->session_id, real_res, real_csum);
1121 }
b17d11c6 1122 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1123 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1124 err = 1;
1125 goto fail;
7e6ca34f
RB
1126 } else if (reply->status_code != RTSP_STATUS_OK ||
1127 reply->nb_transports != 1) {
1617ad97
FB
1128 err = AVERROR_INVALIDDATA;
1129 goto fail;
1130 }
1131
1132 /* XXX: same protocol for all streams is required */
1133 if (i > 0) {
119b4668
RB
1134 if (reply->transports[0].lower_transport != rt->lower_transport ||
1135 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1136 err = AVERROR_INVALIDDATA;
1137 goto fail;
1138 }
1139 } else {
90abbdba 1140 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1141 rt->transport = reply->transports[0].transport;
1617ad97
FB
1142 }
1143
2901cc9a 1144 /* close RTP connection if not chosen */
90abbdba
RB
1145 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1146 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1147 url_close(rtsp_st->rtp_handle);
1148 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1149 }
1150
90abbdba
RB
1151 switch(reply->transports[0].lower_transport) {
1152 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1153 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1154 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1155 break;
115329f1 1156
c8965800
RB
1157 case RTSP_LOWER_TRANSPORT_UDP: {
1158 char url[1024];
1159
1160 /* XXX: also use address if specified */
57b5555c
MS
1161 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1162 reply->transports[0].server_port_min, NULL);
c8965800
RB
1163 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1164 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1165 err = AVERROR_INVALIDDATA;
1166 goto fail;
1617ad97 1167 }
9c8fa20d
MS
1168 /* Try to initialize the connection state in a
1169 * potential NAT router by sending dummy packets.
1170 * RTP/RTCP dummy packets are used for RDT, too.
1171 */
30ff7c5c 1172 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat)
9c8fa20d 1173 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1174 break;
c8965800
RB
1175 }
1176 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1177 char url[1024];
1178 struct in_addr in;
1179 int port, ttl;
1180
1181 if (reply->transports[0].destination) {
1182 in.s_addr = htonl(reply->transports[0].destination);
1183 port = reply->transports[0].port_min;
1184 ttl = reply->transports[0].ttl;
1185 } else {
3fbd12d1 1186 in = ((struct sockaddr_in*)&rtsp_st->sdp_ip)->sin_addr;
c8965800
RB
1187 port = rtsp_st->sdp_port;
1188 ttl = rtsp_st->sdp_ttl;
1189 }
57b5555c
MS
1190 ff_url_join(url, sizeof(url), "rtp", NULL, inet_ntoa(in),
1191 port, "?ttl=%d", ttl);
c8965800
RB
1192 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1193 err = AVERROR_INVALIDDATA;
1194 goto fail;
1617ad97
FB
1195 }
1196 break;
1197 }
c8965800 1198 }
d1ccf0e0 1199
ee0cb67f 1200 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1201 goto fail;
1617ad97
FB
1202 }
1203
30e79845
RB
1204 if (reply->timeout > 0)
1205 rt->timeout = reply->timeout;
1206
2e889ae4 1207 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1208 rt->need_subscription = 1;
1209
53620bba
RB
1210 return 0;
1211
1212fail:
c8965800 1213 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1214 if (rt->rtsp_streams[i]->rtp_handle) {
1215 url_close(rt->rtsp_streams[i]->rtp_handle);
1216 rt->rtsp_streams[i]->rtp_handle = NULL;
1217 }
1218 }
53620bba
RB
1219 return err;
1220}
1221
1ced9da3
LA
1222static int rtsp_read_play(AVFormatContext *s)
1223{
1224 RTSPState *rt = s->priv_data;
1225 RTSPMessageHeader reply1, *reply = &reply1;
5948f822 1226 int i;
1ced9da3
LA
1227 char cmd[1024];
1228
1229 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
1230
1231 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1232 if (rt->state == RTSP_STATE_PAUSED) {
b17d11c6 1233 cmd[0] = 0;
1ced9da3
LA
1234 } else {
1235 snprintf(cmd, sizeof(cmd),
1ced9da3 1236 "Range: npt=%0.3f-\r\n",
1ced9da3
LA
1237 (double)rt->seek_timestamp / AV_TIME_BASE);
1238 }
b17d11c6 1239 ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
1ced9da3
LA
1240 if (reply->status_code != RTSP_STATUS_OK) {
1241 return -1;
1242 }
5948f822
MS
1243 if (reply->range_start != AV_NOPTS_VALUE &&
1244 rt->transport == RTSP_TRANSPORT_RTP) {
1245 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1246 RTSPStream *rtsp_st = rt->rtsp_streams[i];
1247 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1248 AVStream *st = NULL;
8d168a92
MS
1249 if (!rtpctx)
1250 continue;
5948f822
MS
1251 if (rtsp_st->stream_index >= 0)
1252 st = s->streams[rtsp_st->stream_index];
1253 rtpctx->last_rtcp_ntp_time = AV_NOPTS_VALUE;
1254 rtpctx->first_rtcp_ntp_time = AV_NOPTS_VALUE;
1255 if (st)
1256 rtpctx->range_start_offset = av_rescale_q(reply->range_start,
1257 AV_TIME_BASE_Q,
1258 st->time_base);
1259 }
1260 }
1ced9da3 1261 }
c02fd3d2 1262 rt->state = RTSP_STATE_STREAMING;
1ced9da3
LA
1263 return 0;
1264}
1265
6e69f6c4 1266static int rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
e23d195d
MS
1267{
1268 RTSPState *rt = s->priv_data;
e23d195d
MS
1269 char cmd[1024];
1270 unsigned char *content = NULL;
1271 int ret;
1272
1273 /* describe the stream */
1274 snprintf(cmd, sizeof(cmd),
b17d11c6 1275 "Accept: application/sdp\r\n");
e23d195d
MS
1276 if (rt->server_type == RTSP_SERVER_REAL) {
1277 /**
1278 * The Require: attribute is needed for proper streaming from
1279 * Realmedia servers.
1280 */
1281 av_strlcat(cmd,
1282 "Require: com.real.retain-entity-for-setup\r\n",
1283 sizeof(cmd));
1284 }
b17d11c6 1285 ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
e23d195d
MS
1286 if (!content)
1287 return AVERROR_INVALIDDATA;
1288 if (reply->status_code != RTSP_STATUS_OK) {
1289 av_freep(&content);
1290 return AVERROR_INVALIDDATA;
1291 }
1292
1293 /* now we got the SDP description, we parse it */
1294 ret = sdp_parse(s, (const char *)content);
1295 av_freep(&content);
1296 if (ret < 0)
1297 return AVERROR_INVALIDDATA;
1298
1299 return 0;
1300}
1301
26cb700c 1302static int rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
3e24c770
MS
1303{
1304 RTSPState *rt = s->priv_data;
1305 RTSPMessageHeader reply1, *reply = &reply1;
3e24c770
MS
1306 int i;
1307 char *sdp;
26cb700c 1308 AVFormatContext sdp_ctx, *ctx_array[1];
c07c6f81
MS
1309
1310 rt->start_time = av_gettime();
3e24c770
MS
1311
1312 /* Announce the stream */
28450066 1313 sdp = av_mallocz(SDP_MAX_SIZE);
3e24c770
MS
1314 if (sdp == NULL)
1315 return AVERROR(ENOMEM);
26cb700c
MS
1316 /* We create the SDP based on the RTSP AVFormatContext where we
1317 * aren't allowed to change the filename field. (We create the SDP
1318 * based on the RTSP context since the contexts for the RTP streams
1319 * don't exist yet.) In order to specify a custom URL with the actual
1320 * peer IP instead of the originally specified hostname, we create
1321 * a temporary copy of the AVFormatContext, where the custom URL is set.
1322 *
1323 * FIXME: Create the SDP without copying the AVFormatContext.
1324 * This either requires setting up the RTP stream AVFormatContexts
1325 * already here (complicating things immensely) or getting a more
1326 * flexible SDP creation interface.
1327 */
1328 sdp_ctx = *s;
1329 ff_url_join(sdp_ctx.filename, sizeof(sdp_ctx.filename),
1330 "rtsp", NULL, addr, -1, NULL);
1331 ctx_array[0] = &sdp_ctx;
28450066 1332 if (avf_sdp_create(ctx_array, 1, sdp, SDP_MAX_SIZE)) {
3e24c770
MS
1333 av_free(sdp);
1334 return AVERROR_INVALIDDATA;
1335 }
1336 av_log(s, AV_LOG_INFO, "SDP:\n%s\n", sdp);
b17d11c6
MS
1337 ff_rtsp_send_cmd_with_content(s, "ANNOUNCE", rt->control_uri,
1338 "Content-Type: application/sdp\r\n",
1339 reply, NULL, sdp, strlen(sdp));
3e24c770
MS
1340 av_free(sdp);
1341 if (reply->status_code != RTSP_STATUS_OK)
1342 return AVERROR_INVALIDDATA;
1343
1344 /* Set up the RTSPStreams for each AVStream */
1345 for (i = 0; i < s->nb_streams; i++) {
1346 RTSPStream *rtsp_st;
1347 AVStream *st = s->streams[i];
1348
1349 rtsp_st = av_mallocz(sizeof(RTSPStream));
1350 if (!rtsp_st)
1351 return AVERROR(ENOMEM);
1352 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
1353
1354 st->priv_data = rtsp_st;
1355 rtsp_st->stream_index = i;
1356
db76ca7f 1357 av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));
3e24c770
MS
1358 /* Note, this must match the relative uri set in the sdp content */
1359 av_strlcatf(rtsp_st->control_url, sizeof(rtsp_st->control_url),
1360 "/streamid=%d", i);
1361 }
1362
1363 return 0;
1364}
1365
b8c2c41d
JA
1366void ff_rtsp_close_connections(AVFormatContext *s)
1367{
1368 RTSPState *rt = s->priv_data;
1369 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1370 url_close(rt->rtsp_hd);
6217b645 1371 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1372}
1373
3307e6ea 1374int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1375{
1376 RTSPState *rt = s->priv_data;
921da217
LB
1377 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1378 char *option_list, *option, *filename;
03f8fc08 1379 int port, err, tcp_fd;
354b7573 1380 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1381 int lower_transport_mask = 0;
1cf151e9 1382 char real_challenge[64];
03f8fc08
MS
1383 struct sockaddr_storage peer;
1384 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1385
1386 if (!ff_network_init())
1387 return AVERROR(EIO);
c8965800 1388redirect:
f5d33f52 1389 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1390 /* extract hostname and port */
f3bfe388 1391 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1392 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1393 if (*auth) {
aa8bf2fb 1394 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1395 }
53620bba
RB
1396 if (port < 0)
1397 port = RTSP_DEFAULT_PORT;
1398
1399 /* search for options */
602eb779 1400 option_list = strrchr(path, '?');
53620bba 1401 if (option_list) {
2a21adf9
MS
1402 /* Strip out the RTSP specific options, write out the rest of
1403 * the options back into the same string. */
1404 filename = option_list;
c8965800 1405 while (option_list) {
53620bba 1406 /* move the option pointer */
921da217 1407 option = ++option_list;
53620bba
RB
1408 option_list = strchr(option_list, '&');
1409 if (option_list)
921da217
LB
1410 *option_list = 0;
1411
53620bba 1412 /* handle the options */
c8965800 1413 if (!strcmp(option, "udp")) {
7a033e08 1414 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1415 } else if (!strcmp(option, "multicast")) {
7a033e08 1416 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1417 } else if (!strcmp(option, "tcp")) {
7a033e08 1418 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1419 } else if(!strcmp(option, "http")) {
1420 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1421 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1422 } else {
2a21adf9
MS
1423 /* Write options back into the buffer, using memmove instead
1424 * of strcpy since the strings may overlap. */
1425 int len = strlen(option);
1426 memmove(++filename, option, len);
1427 filename += len;
921da217
LB
1428 if (option_list) *filename = '&';
1429 }
53620bba 1430 }
921da217 1431 *filename = 0;
53620bba
RB
1432 }
1433
90abbdba 1434 if (!lower_transport_mask)
2a1d51c5 1435 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1436
3e24c770 1437 if (s->oformat) {
b7dc88fc
MS
1438 /* Only UDP or TCP - UDP multicast isn't supported. */
1439 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1440 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1441 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1442 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1443 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1444 err = AVERROR(EINVAL);
1445 goto fail;
1446 }
1447 }
1448
4bc5cc23
MS
1449 /* Construct the URI used in request; this is similar to s->filename,
1450 * but with authentication credentials removed and RTSP specific options
1451 * stripped out. */
1452 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1453 host, port, "%s", path);
1454
f5d33f52
JA
1455 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1456 /* set up initial handshake for tunneling */
1457 char httpname[1024];
1458 char sessioncookie[17];
1459 char headers[1024];
1460
10ed37b5 1461 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1462 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1463 av_get_random_seed(), av_get_random_seed());
1464
1465 /* GET requests */
9290f15d 1466 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1467 err = AVERROR(EIO);
1468 goto fail;
1469 }
1470
1471 /* generate GET headers */
1472 snprintf(headers, sizeof(headers),
1473 "x-sessioncookie: %s\r\n"
1474 "Accept: application/x-rtsp-tunnelled\r\n"
1475 "Pragma: no-cache\r\n"
1476 "Cache-Control: no-cache\r\n",
1477 sessioncookie);
00e4a1f4 1478 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1479
1480 /* complete the connection */
9290f15d 1481 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1482 err = AVERROR(EIO);
1483 goto fail;
1484 }
1485
1486 /* POST requests */
9290f15d 1487 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1488 err = AVERROR(EIO);
1489 goto fail;
1490 }
1491
1492 /* generate POST headers */
1493 snprintf(headers, sizeof(headers),
1494 "x-sessioncookie: %s\r\n"
1495 "Content-Type: application/x-rtsp-tunnelled\r\n"
1496 "Pragma: no-cache\r\n"
1497 "Cache-Control: no-cache\r\n"
1498 "Content-Length: 32767\r\n"
1499 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1500 sessioncookie);
00e4a1f4
JA
1501 ff_http_set_headers(rt->rtsp_hd_out, headers);
1502 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1503
a8ead332
MS
1504 /* Initialize the authentication state for the POST session. The HTTP
1505 * protocol implementation doesn't properly handle multi-pass
1506 * authentication for POST requests, since it would require one of
1507 * the following:
1508 * - implementing Expect: 100-continue, which many HTTP servers
1509 * don't support anyway, even less the RTSP servers that do HTTP
1510 * tunneling
1511 * - sending the whole POST data until getting a 401 reply specifying
1512 * what authentication method to use, then resending all that data
1513 * - waiting for potential 401 replies directly after sending the
1514 * POST header (waiting for some unspecified time)
1515 * Therefore, we copy the full auth state, which works for both basic
1516 * and digest. (For digest, we would have to synchronize the nonce
1517 * count variable between the two sessions, if we'd do more requests
1518 * with the original session, though.)
1519 */
1520 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1521
9290f15d
MS
1522 /* complete the connection */
1523 if (url_connect(rt->rtsp_hd_out)) {
1524 err = AVERROR(EIO);
1525 goto fail;
1526 }
f5d33f52 1527 } else {
48e77473 1528 /* open the tcp connection */
41874d0a 1529 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1530 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1531 err = AVERROR(EIO);
1532 goto fail;
1533 }
00e4a1f4 1534 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1535 }
53620bba
RB
1536 rt->seq = 0;
1537
00e4a1f4 1538 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1539 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1540 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1541 NULL, 0, NI_NUMERICHOST);
1542 }
1543
c8965800
RB
1544 /* request options supported by the server; this also detects server
1545 * type */
1cf151e9 1546 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1547 cmd[0] = 0;
2e889ae4 1548 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1549 av_strlcat(cmd,
1550 /**
1551 * The following entries are required for proper
1552 * streaming from a Realmedia server. They are
1553 * interdependent in some way although we currently
1554 * don't quite understand how. Values were copied
1555 * from mplayer SVN r23589.
1556 * @param CompanyID is a 16-byte ID in base64
1557 * @param ClientChallenge is a 16-byte ID in hex
1558 */
1559 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1560 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1561 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1562 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1563 sizeof(cmd));
b17d11c6 1564 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1565 if (reply->status_code != RTSP_STATUS_OK) {
1566 err = AVERROR_INVALIDDATA;
1567 goto fail;
1568 }
1569
1570 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1571 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1572 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1573 continue;
7a86bafa
RB
1574 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1575 rt->server_type = RTSP_SERVER_WMS;
c8965800 1576 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1577 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1578 break;
1579 }
1580
3e24c770 1581 if (s->iformat)
6e69f6c4 1582 err = rtsp_setup_input_streams(s, reply);
3e24c770 1583 else
26cb700c 1584 err = rtsp_setup_output_streams(s, host);
e23d195d 1585 if (err)
53620bba 1586 goto fail;
53620bba 1587
8a8754d8 1588 do {
c8965800
RB
1589 int lower_transport = ff_log2_tab[lower_transport_mask &
1590 ~(lower_transport_mask - 1)];
8a8754d8 1591
90abbdba 1592 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1593 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1594 real_challenge : NULL);
8a8754d8 1595 if (err < 0)
7e6ca34f 1596 goto fail;
90abbdba
RB
1597 lower_transport_mask &= ~(1 << lower_transport);
1598 if (lower_transport_mask == 0 && err == 1) {
adef229e 1599 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1600 goto fail;
1601 }
1602 } while (err);
53620bba 1603
ff762d6e 1604 rt->state = RTSP_STATE_IDLE;
c8965800 1605 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1606 return 0;
1607 fail:
3307e6ea 1608 ff_rtsp_close_streams(s);
b8c2c41d 1609 ff_rtsp_close_connections(s);
35cfd646 1610 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1611 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1612 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1613 reply->status_code,
1614 s->filename);
1615 goto redirect;
1616 }
57b5555c 1617 ff_network_close();
1617ad97
FB
1618 return err;
1619}
6f5a3d0a 1620#endif
1617ad97 1621
6f5a3d0a 1622#if CONFIG_RTSP_DEMUXER
4280f9bb
MS
1623static int rtsp_read_header(AVFormatContext *s,
1624 AVFormatParameters *ap)
1625{
be73ba2f 1626 RTSPState *rt = s->priv_data;
4280f9bb
MS
1627 int ret;
1628
3307e6ea 1629 ret = ff_rtsp_connect(s);
4280f9bb
MS
1630 if (ret)
1631 return ret;
1632
be73ba2f
AJ
1633 rt->real_setup_cache = av_mallocz(2 * s->nb_streams * sizeof(*rt->real_setup_cache));
1634 if (!rt->real_setup_cache)
1635 return AVERROR(ENOMEM);
1636 rt->real_setup = rt->real_setup_cache + s->nb_streams * sizeof(*rt->real_setup);
1637
4280f9bb
MS
1638 if (ap->initial_pause) {
1639 /* do not start immediately */
1640 } else {
1641 if (rtsp_read_play(s) < 0) {
3307e6ea 1642 ff_rtsp_close_streams(s);
b8c2c41d 1643 ff_rtsp_close_connections(s);
4280f9bb
MS
1644 return AVERROR_INVALIDDATA;
1645 }
1646 }
1647
1648 return 0;
1649}
1650
0e59034e
RB
1651static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1652 uint8_t *buf, int buf_size)
1653{
1654 RTSPState *rt = s->priv_data;
1655 RTSPStream *rtsp_st;
1656 fd_set rfds;
9cba6f5f 1657 int fd, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1658 struct timeval tv;
1659
c8965800 1660 for (;;) {
0e59034e
RB
1661 if (url_interrupt_cb())
1662 return AVERROR(EINTR);
1663 FD_ZERO(&rfds);
1664 if (rt->rtsp_hd) {
1665 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1666 FD_SET(tcp_fd, &rfds);
1667 } else {
1668 fd_max = 0;
1669 tcp_fd = -1;
1670 }
c8965800 1671 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1672 rtsp_st = rt->rtsp_streams[i];
1673 if (rtsp_st->rtp_handle) {
1674 /* currently, we cannot probe RTCP handle because of
1675 * blocking restrictions */
1676 fd = url_get_file_handle(rtsp_st->rtp_handle);
1677 if (fd > fd_max)
1678 fd_max = fd;
1679 FD_SET(fd, &rfds);
1680 }
1681 }
1682 tv.tv_sec = 0;
9cba6f5f 1683 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1684 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1685 if (n > 0) {
9cba6f5f 1686 timeout_cnt = 0;
c8965800 1687 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1688 rtsp_st = rt->rtsp_streams[i];
1689 if (rtsp_st->rtp_handle) {
1690 fd = url_get_file_handle(rtsp_st->rtp_handle);
1691 if (FD_ISSET(fd, &rfds)) {
1692 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1693 if (ret > 0) {
1694 *prtsp_st = rtsp_st;
1695 return ret;
1696 }
1697 }
1698 }
1699 }
1700#if CONFIG_RTSP_DEMUXER
27000636 1701 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1702 RTSPMessageHeader reply;
1703
3032276b
MS
1704 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1705 if (ret < 0)
1706 return ret;
0e59034e 1707 /* XXX: parse message */
c02fd3d2 1708 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1709 return 0;
1710 }
1711#endif
9cba6f5f 1712 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1713 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1714 } else if (n < 0 && errno != EINTR)
1715 return AVERROR(errno);
0e59034e
RB
1716 }
1717}
1718
8b1ab7bf
FB
1719static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1720 uint8_t *buf, int buf_size)
1617ad97
FB
1721{
1722 RTSPState *rt = s->priv_data;
b6892136 1723 int id, len, i, ret;
1617ad97 1724 RTSPStream *rtsp_st;
1617ad97 1725
b6892136 1726#ifdef DEBUG_RTP_TCP
67c9cd69 1727 dprintf(s, "tcp_read_packet:\n");
b6892136 1728#endif
c8965800
RB
1729redo:
1730 for (;;) {
7e726132
RB
1731 RTSPMessageHeader reply;
1732
3307e6ea 1733 ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
2401660d
MS
1734 if (ret < 0)
1735 return ret;
7e726132 1736 if (ret == 1) /* received '$' */
1617ad97 1737 break;
7e726132 1738 /* XXX: parse message */
c02fd3d2 1739 if (rt->state != RTSP_STATE_STREAMING)
fccb1770 1740 return 0;
1617ad97 1741 }
0e848977 1742 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1743 if (ret != 3)
8b1ab7bf 1744 return -1;
c8965800 1745 id = buf[0];
80fb8234 1746 len = AV_RB16(buf + 1);
b6892136 1747#ifdef DEBUG_RTP_TCP
67c9cd69 1748 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1749#endif
8b1ab7bf 1750 if (len > buf_size || len < 12)
1617ad97
FB
1751 goto redo;
1752 /* get the data */
0e848977 1753 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1754 if (ret != len)
8b1ab7bf 1755 return -1;
985b05d3 1756 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1757 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1758 return -1;
115329f1 1759
1617ad97 1760 /* find the matching stream */
c8965800 1761 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1762 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1763 if (id >= rtsp_st->interleaved_min &&
1764 id <= rtsp_st->interleaved_max)
1617ad97
FB
1765 goto found;
1766 }
1767 goto redo;
c8965800 1768found:
8b1ab7bf
FB
1769 *prtsp_st = rtsp_st;
1770 return len;
1617ad97
FB
1771}
1772
0e59034e
RB
1773static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1774{
1775 RTSPState *rt = s->priv_data;
1776 int ret, len;
1777 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1778 RTSPStream *rtsp_st;
1779
1780 /* get next frames from the same RTP packet */
1781 if (rt->cur_transport_priv) {
c8965800 1782 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1783 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1784 } else
0e59034e
RB
1785 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1786 if (ret == 0) {
1787 rt->cur_transport_priv = NULL;
1788 return 0;
1789 } else if (ret == 1) {
1790 return 0;
c8965800 1791 } else
0e59034e 1792 rt->cur_transport_priv = NULL;
0e59034e
RB
1793 }
1794
1795 /* read next RTP packet */
1796 redo:
1797 switch(rt->lower_transport) {
1798 default:
1799#if CONFIG_RTSP_DEMUXER
1800 case RTSP_LOWER_TRANSPORT_TCP:
1801 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1802 break;
1803#endif
1804 case RTSP_LOWER_TRANSPORT_UDP:
1805 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1806 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1807 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1808 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1809 break;
1810 }
1811 if (len < 0)
1812 return len;
1813 if (len == 0)
1814 return AVERROR_EOF;
c8965800 1815 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1816 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48 1817 } else {
0e59034e 1818 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48
MS
1819 if (ret < 0) {
1820 /* Either bad packet, or a RTCP packet. Check if the
1821 * first_rtcp_ntp_time field was initialized. */
1822 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1823 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1824 /* first_rtcp_ntp_time has been initialized for this stream,
1825 * copy the same value to all other uninitialized streams,
1826 * in order to map their timestamp origin to the same ntp time
1827 * as this one. */
1828 int i;
1829 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1830 RTPDemuxContext *rtpctx2 = rtsp_st->transport_priv;
1831 if (rtpctx2 &&
1832 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE)
1833 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
1834 }
1835 }
1836 }
1837 }
0e59034e
RB
1838 if (ret < 0)
1839 goto redo;
c8965800 1840 if (ret == 1)
0e59034e
RB
1841 /* more packets may follow, so we save the RTP context */
1842 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1843
1844 return ret;
1845}
1846
c8965800 1847static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1848{
1849 RTSPState *rt = s->priv_data;
98713182 1850 int ret;
30e79845
RB
1851 RTSPMessageHeader reply1, *reply = &reply1;
1852 char cmd[1024];
8b1ab7bf 1853
572c6a38 1854 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1855 int i;
1256d16b 1856
572c6a38 1857 for (i = 0; i < s->nb_streams; i++)
be73ba2f 1858 rt->real_setup[i] = s->streams[i]->discard;
572c6a38
RB
1859
1860 if (!rt->need_subscription) {
be73ba2f 1861 if (memcmp (rt->real_setup, rt->real_setup_cache,
572c6a38 1862 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1863 snprintf(cmd, sizeof(cmd),
7eaa646f 1864 "Unsubscribe: %s\r\n",
b17d11c6
MS
1865 rt->last_subscription);
1866 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1867 cmd, reply, NULL);
572c6a38
RB
1868 if (reply->status_code != RTSP_STATUS_OK)
1869 return AVERROR_INVALIDDATA;
1870 rt->need_subscription = 1;
1871 }
1256d16b 1872 }
1256d16b 1873
572c6a38
RB
1874 if (rt->need_subscription) {
1875 int r, rule_nr, first = 1;
1876
be73ba2f 1877 memcpy(rt->real_setup_cache, rt->real_setup,
572c6a38
RB
1878 sizeof(enum AVDiscard) * s->nb_streams);
1879 rt->last_subscription[0] = 0;
1880
1881 snprintf(cmd, sizeof(cmd),
b17d11c6 1882 "Subscribe: ");
572c6a38
RB
1883 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1884 rule_nr = 0;
1885 for (r = 0; r < s->nb_streams; r++) {
1886 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1887 if (s->streams[r]->discard != AVDISCARD_ALL) {
1888 if (!first)
1889 av_strlcat(rt->last_subscription, ",",
1890 sizeof(rt->last_subscription));
1891 ff_rdt_subscribe_rule(
1892 rt->last_subscription,
1893 sizeof(rt->last_subscription), i, rule_nr);
1894 first = 0;
1895 }
1896 rule_nr++;
1897 }
1898 }
1899 }
1900 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
b17d11c6
MS
1901 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1902 cmd, reply, NULL);
572c6a38
RB
1903 if (reply->status_code != RTSP_STATUS_OK)
1904 return AVERROR_INVALIDDATA;
1905 rt->need_subscription = 0;
1906
c02fd3d2 1907 if (rt->state == RTSP_STATE_STREAMING)
572c6a38
RB
1908 rtsp_read_play (s);
1909 }
1256d16b
RB
1910 }
1911
d7250724 1912 ret = rtsp_fetch_packet(s, pkt);
c8965800 1913 if (ret < 0)
98713182 1914 return ret;
30e79845
RB
1915
1916 /* send dummy request to keep TCP connection alive */
27014bf5 1917 if ((av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
30e79845 1918 if (rt->server_type == RTSP_SERVER_WMS) {
b17d11c6 1919 ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
30e79845 1920 } else {
b17d11c6 1921 ff_rtsp_send_cmd_async(s, "OPTIONS", "*", NULL);
30e79845
RB
1922 }
1923 }
1924
8b1ab7bf 1925 return 0;
1617ad97
FB
1926}
1927
ff762d6e
FB
1928/* pause the stream */
1929static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1930{
ff762d6e 1931 RTSPState *rt = s->priv_data;
a9e534d5 1932 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34 1933
c02fd3d2 1934 if (rt->state != RTSP_STATE_STREAMING)
ff762d6e 1935 return 0;
2e889ae4 1936 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
b17d11c6 1937 ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
99b2ac07
RB
1938 if (reply->status_code != RTSP_STATUS_OK) {
1939 return -1;
1940 }
1256d16b 1941 }
5f86057f
RB
1942 rt->state = RTSP_STATE_PAUSED;
1943 return 0;
b7b8fc34
FB
1944}
1945
115329f1 1946static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1947 int64_t timestamp, int flags)
ff762d6e
FB
1948{
1949 RTSPState *rt = s->priv_data;
115329f1 1950
c8965800
RB
1951 rt->seek_timestamp = av_rescale_q(timestamp,
1952 s->streams[stream_index]->time_base,
1953 AV_TIME_BASE_Q);
ff762d6e
FB
1954 switch(rt->state) {
1955 default:
1956 case RTSP_STATE_IDLE:
1957 break;
c02fd3d2 1958 case RTSP_STATE_STREAMING:
ec606b36
LB
1959 if (rtsp_read_pause(s) != 0)
1960 return -1;
1961 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1962 if (rtsp_read_play(s) != 0)
1963 return -1;
1964 break;
1965 case RTSP_STATE_PAUSED:
1966 rt->state = RTSP_STATE_IDLE;
1967 break;
1968 }
1969 return 0;
1970}
1971
1617ad97
FB
1972static int rtsp_read_close(AVFormatContext *s)
1973{
1974 RTSPState *rt = s->priv_data;
1617ad97 1975
b6892136 1976#if 0
1617ad97 1977 /* NOTE: it is valid to flush the buffer here */
90abbdba 1978 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1979 url_fclose(&rt->rtsp_gb);
1980 }
b6892136 1981#endif
b17d11c6 1982 ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
1617ad97 1983
3307e6ea 1984 ff_rtsp_close_streams(s);
b8c2c41d 1985 ff_rtsp_close_connections(s);
57b5555c 1986 ff_network_close();
be73ba2f
AJ
1987 rt->real_setup = NULL;
1988 av_freep(&rt->real_setup_cache);
1617ad97
FB
1989 return 0;
1990}
1991
d2a067d1 1992AVInputFormat rtsp_demuxer = {
1617ad97 1993 "rtsp",
bde15e74 1994 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1995 sizeof(RTSPState),
1996 rtsp_probe,
1997 rtsp_read_header,
1998 rtsp_read_packet,
1999 rtsp_read_close,
ff762d6e 2000 rtsp_read_seek,
bb76a117 2001 .flags = AVFMT_NOFILE,
ff762d6e
FB
2002 .read_play = rtsp_read_play,
2003 .read_pause = rtsp_read_pause,
1617ad97 2004};
96862926 2005#endif
1617ad97 2006
cb1fdc61 2007static int sdp_probe(AVProbeData *p1)
93ced3e8 2008{
0e1ceacd 2009 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 2010
3fbd12d1 2011 /* we look for a line beginning "c=IN IP" */
0e1ceacd 2012 while (p < p_end && *p != '\0') {
3fbd12d1
MS
2013 if (p + sizeof("c=IN IP") - 1 < p_end &&
2014 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 2015 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 2016
c8965800 2017 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 2018 if (++p >= p_end)
cb1fdc61 2019 break;
cb1fdc61
FB
2020 if (*p == '\r')
2021 p++;
2022 }
93ced3e8
FB
2023 return 0;
2024}
2025
c8965800 2026static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 2027{
8b1ab7bf 2028 RTSPState *rt = s->priv_data;
93ced3e8
FB
2029 RTSPStream *rtsp_st;
2030 int size, i, err;
2031 char *content;
2032 char url[1024];
2033
57b5555c
MS
2034 if (!ff_network_init())
2035 return AVERROR(EIO);
2036
93ced3e8
FB
2037 /* read the whole sdp file */
2038 /* XXX: better loading */
2039 content = av_malloc(SDP_MAX_SIZE);
899681cd 2040 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2041 if (size <= 0) {
2042 av_free(content);
2043 return AVERROR_INVALIDDATA;
2044 }
2045 content[size] ='\0';
2046
2047 sdp_parse(s, content);
2048 av_free(content);
2049
2050 /* open each RTP stream */
c8965800 2051 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 2052 char namebuf[50];
8b1ab7bf 2053 rtsp_st = rt->rtsp_streams[i];
115329f1 2054
3fbd12d1
MS
2055 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
2056 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 2057 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 2058 namebuf, rtsp_st->sdp_port,
57b5555c
MS
2059 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
2060 rtsp_st->sdp_ttl);
dbf30963 2061 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
2062 err = AVERROR_INVALIDDATA;
2063 goto fail;
2064 }
ee0cb67f 2065 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2066 goto fail;
93ced3e8
FB
2067 }
2068 return 0;
c8965800 2069fail:
3307e6ea 2070 ff_rtsp_close_streams(s);
57b5555c 2071 ff_network_close();
93ced3e8
FB
2072 return err;
2073}
2074
93ced3e8
FB
2075static int sdp_read_close(AVFormatContext *s)
2076{
3307e6ea 2077 ff_rtsp_close_streams(s);
57b5555c 2078 ff_network_close();
93ced3e8
FB
2079 return 0;
2080}
2081
ff70e601 2082AVInputFormat sdp_demuxer = {
93ced3e8 2083 "sdp",
bde15e74 2084 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
2085 sizeof(RTSPState),
2086 sdp_probe,
2087 sdp_read_header,
d7250724 2088 rtsp_fetch_packet,
93ced3e8
FB
2089 sdp_read_close,
2090};