Handle G.722 in RTP, and all the exceptions mandated in RFC 3551
[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")) {
1617ad97
FB
699 if (*p == '=') {
700 p++;
701 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 702 get_sockaddr(buf, &th->destination);
1617ad97 703 }
619298a8
JW
704 } else if (!strcmp(parameter, "source")) {
705 if (*p == '=') {
706 p++;
707 get_word_sep(buf, sizeof(buf), ";,", &p);
708 av_strlcpy(th->source, buf, sizeof(th->source));
709 }
1617ad97 710 }
619298a8 711
1617ad97
FB
712 while (*p != ';' && *p != '\0' && *p != ',')
713 p++;
714 if (*p == ';')
715 p++;
716 }
717 if (*p == ',')
718 p++;
719
720 reply->nb_transports++;
721 }
722}
723
2626308a
MS
724void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
725 HTTPAuthState *auth_state)
1617ad97
FB
726{
727 const char *p;
728
729 /* NOTE: we do case independent match for broken servers */
730 p = buf;
f7d78f36 731 if (av_stristart(p, "Session:", &p)) {
30e79845 732 int t;
1617ad97 733 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
734 if (av_stristart(p, ";timeout=", &p) &&
735 (t = strtol(p, NULL, 10)) > 0) {
736 reply->timeout = t;
737 }
f7d78f36 738 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 739 reply->content_length = strtol(p, NULL, 10);
f7d78f36 740 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 741 rtsp_parse_transport(reply, p);
f7d78f36 742 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 743 reply->seq = strtol(p, NULL, 10);
f7d78f36 744 } else if (av_stristart(p, "Range:", &p)) {
31693e00 745 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 746 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 747 p += strspn(p, SPACE_CHARS);
30aa6aed 748 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 749 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 750 p += strspn(p, SPACE_CHARS);
7a86bafa 751 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
752 } else if (av_stristart(p, "Notice:", &p) ||
753 av_stristart(p, "X-Notice:", &p)) {
754 reply->notice = strtol(p, NULL, 10);
d243ba30 755 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 756 p += strspn(p, SPACE_CHARS);
d243ba30 757 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a 758 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
30619e6e 759 p += strspn(p, SPACE_CHARS);
2626308a
MS
760 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
761 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
30619e6e 762 p += strspn(p, SPACE_CHARS);
2626308a 763 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
1617ad97
FB
764 }
765}
766
b7b8fc34 767/* skip a RTP/TCP interleaved packet */
ec55edba 768void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
769{
770 RTSPState *rt = s->priv_data;
771 int ret, len, len1;
772 uint8_t buf[1024];
773
0e848977 774 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
775 if (ret != 3)
776 return;
80fb8234 777 len = AV_RB16(buf + 1);
67c9cd69
BC
778
779 dprintf(s, "skipping RTP packet len=%d\n", len);
780
b7b8fc34
FB
781 /* skip payload */
782 while (len > 0) {
783 len1 = len;
784 if (len1 > sizeof(buf))
785 len1 = sizeof(buf);
0e848977 786 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
787 if (ret != len1)
788 return;
789 len -= len1;
790 }
791}
1617ad97 792
3307e6ea 793int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
794 unsigned char **content_ptr,
795 int return_on_interleaved_data)
1617ad97
FB
796{
797 RTSPState *rt = s->priv_data;
798 char buf[4096], buf1[1024], *q;
799 unsigned char ch;
800 const char *p;
7e726132 801 int ret, content_length, line_count = 0;
1617ad97
FB
802 unsigned char *content = NULL;
803
d541a7d2 804 memset(reply, 0, sizeof(*reply));
1617ad97 805
1617ad97 806 /* parse reply (XXX: use buffers) */
1617ad97 807 rt->last_reply[0] = '\0';
c8965800 808 for (;;) {
1617ad97 809 q = buf;
c8965800 810 for (;;) {
0e848977 811 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 812#ifdef DEBUG_RTP_TCP
67c9cd69 813 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
814#endif
815 if (ret != 1)
2401660d 816 return AVERROR_EOF;
1617ad97
FB
817 if (ch == '\n')
818 break;
b7b8fc34
FB
819 if (ch == '$') {
820 /* XXX: only parse it if first char on line ? */
7e726132
RB
821 if (return_on_interleaved_data) {
822 return 1;
823 } else
ec55edba 824 ff_rtsp_skip_packet(s);
b7b8fc34 825 } else if (ch != '\r') {
1617ad97
FB
826 if ((q - buf) < sizeof(buf) - 1)
827 *q++ = ch;
828 }
829 }
830 *q = '\0';
67c9cd69
BC
831
832 dprintf(s, "line='%s'\n", buf);
833
1617ad97
FB
834 /* test if last line */
835 if (buf[0] == '\0')
836 break;
837 p = buf;
838 if (line_count == 0) {
839 /* get reply code */
840 get_word(buf1, sizeof(buf1), &p);
841 get_word(buf1, sizeof(buf1), &p);
842 reply->status_code = atoi(buf1);
d93fdcbf 843 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 844 } else {
2626308a 845 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
846 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
847 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
848 }
849 line_count++;
850 }
115329f1 851
1617ad97 852 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 853 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 854
1617ad97
FB
855 content_length = reply->content_length;
856 if (content_length > 0) {
857 /* leave some room for a trailing '\0' (useful for simple parsing) */
858 content = av_malloc(content_length + 1);
0e848977 859 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
860 content[content_length] = '\0';
861 }
862 if (content_ptr)
863 *content_ptr = content;
e2e2e7dd
AB
864 else
865 av_free(content);
7e726132 866
7ed8211b
LB
867 if (rt->seq != reply->seq) {
868 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
869 rt->seq, reply->seq);
870 }
871
fccb1770
RB
872 /* EOS */
873 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
874 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 875 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 876 rt->state = RTSP_STATE_IDLE;
c8965800 877 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 878 return AVERROR(EIO); /* data or server error */
c8965800 879 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
880 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
881 return AVERROR(EPERM);
882
7e726132 883 return 0;
1617ad97
FB
884}
885
d0382374 886int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
887 const char *method, const char *url,
888 const char *headers,
889 const unsigned char *send_content,
890 int send_content_length)
29b9f58b
RB
891{
892 RTSPState *rt = s->priv_data;
f5d33f52
JA
893 char buf[4096], *out_buf;
894 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 895
f5d33f52
JA
896 /* Add in RTSP headers */
897 out_buf = buf;
29b9f58b 898 rt->seq++;
b17d11c6
MS
899 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
900 if (headers)
901 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 902 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
903 if (rt->session_id[0] != '\0' && (!headers ||
904 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 905 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 906 }
aa8bf2fb
MS
907 if (rt->auth[0]) {
908 char *str = ff_http_auth_create_response(&rt->auth_state,
909 rt->auth, url, method);
910 if (str)
911 av_strlcat(buf, str, sizeof(buf));
912 av_free(str);
913 }
dfd017bf
MS
914 if (send_content_length > 0 && send_content)
915 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 916 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 917
f5d33f52
JA
918 /* base64 encode rtsp if tunneling */
919 if (rt->control_transport == RTSP_MODE_TUNNEL) {
920 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
921 out_buf = base64buf;
922 }
923
67c9cd69
BC
924 dprintf(s, "Sending:\n%s--\n", buf);
925
f5d33f52
JA
926 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
927 if (send_content_length > 0 && send_content) {
928 if (rt->control_transport == RTSP_MODE_TUNNEL) {
929 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
930 "with content data not supported\n");
931 return AVERROR_PATCHWELCOME;
932 }
b8c2c41d 933 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 934 }
30e79845 935 rt->last_cmd_time = av_gettime();
d0382374
JA
936
937 return 0;
30e79845
RB
938}
939
d0382374 940int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 941 const char *url, const char *headers)
dfd017bf 942{
d0382374 943 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
944}
945
d0382374 946int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
947 const char *headers, RTSPMessageHeader *reply,
948 unsigned char **content_ptr)
30e79845 949{
d0382374 950 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 951 content_ptr, NULL, 0);
29b9f58b
RB
952}
953
d0382374 954int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
955 const char *method, const char *url,
956 const char *header,
957 RTSPMessageHeader *reply,
958 unsigned char **content_ptr,
959 const unsigned char *send_content,
960 int send_content_length)
dfd017bf 961{
30af0779
MS
962 RTSPState *rt = s->priv_data;
963 HTTPAuthType cur_auth_type;
d0382374 964 int ret;
30af0779
MS
965
966retry:
967 cur_auth_type = rt->auth_state.auth_type;
d0382374 968 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
969 send_content,
970 send_content_length)))
d0382374 971 return ret;
dfd017bf 972
d0382374
JA
973 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
974 return ret;
30af0779
MS
975
976 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
977 rt->auth_state.auth_type != HTTP_AUTH_NONE)
978 goto retry;
d0382374 979
bf55cf19 980 if (reply->status_code > 400){
d93fdcbf 981 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 982 method,
d93fdcbf
LB
983 reply->status_code,
984 reply->reason);
bf55cf19
LB
985 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
986 }
987
d0382374 988 return 0;
dfd017bf
MS
989}
990
53620bba 991/**
32e543f8 992 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 993 */
c8965800
RB
994static int make_setup_request(AVFormatContext *s, const char *host, int port,
995 int lower_transport, const char *real_challenge)
1617ad97
FB
996{
997 RTSPState *rt = s->priv_data;
f830c9a4 998 int rtx, j, i, err, interleave = 0;
1617ad97 999 RTSPStream *rtsp_st;
a9e534d5 1000 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1001 char cmd[2048];
e9dea59f
RB
1002 const char *trans_pref;
1003
119b4668 1004 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1005 trans_pref = "x-pn-tng";
1006 else
1007 trans_pref = "RTP/AVP";
115329f1 1008
30e79845
RB
1009 /* default timeout: 1 minute */
1010 rt->timeout = 60;
1011
1617ad97
FB
1012 /* for each stream, make the setup request */
1013 /* XXX: we assume the same server is used for the control of each
c8965800 1014 * RTSP stream */
d1ccf0e0 1015
c8965800 1016 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1017 char transport[2048];
1018
f830c9a4
RB
1019 /**
1020 * WMS serves all UDP data over a single connection, the RTX, which
1021 * isn't necessarily the first in the SDP but has to be the first
1022 * to be set up, else the second/third SETUP will fail with a 461.
1023 */
1024 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1025 rt->server_type == RTSP_SERVER_WMS) {
1026 if (i == 0) {
1027 /* rtx first */
1028 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1029 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1030 if (len >= 4 &&
c8965800
RB
1031 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1032 "/rtx"))
f830c9a4
RB
1033 break;
1034 }
1035 if (rtx == rt->nb_rtsp_streams)
1036 return -1; /* no RTX found */
1037 rtsp_st = rt->rtsp_streams[rtx];
1038 } else
1039 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1040 } else
2fea9650 1041 rtsp_st = rt->rtsp_streams[i];
1617ad97 1042
1617ad97 1043 /* RTP/UDP */
90abbdba 1044 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1045 char buf[256];
85fb7b34 1046
f830c9a4
RB
1047 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1048 port = reply->transports[0].client_port_min;
1049 goto have_port;
1050 }
1051
85fb7b34 1052 /* first try in specified port range */
d1ccf0e0 1053 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1054 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1055 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1056 "?localport=%d", j);
c8965800
RB
1057 /* we will use two ports per rtp stream (rtp and rtcp) */
1058 j += 2;
1059 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1060 goto rtp_opened;
1061 }
1617ad97 1062 }
85fb7b34 1063
c8965800
RB
1064#if 0
1065 /* then try on any port */
1066 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1067 err = AVERROR_INVALIDDATA;
1068 goto fail;
1069 }
1070#endif
85fb7b34
FB
1071
1072 rtp_opened:
8b1ab7bf 1073 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1074 have_port:
0ad306bc 1075 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1076 "%s/UDP;", trans_pref);
1077 if (rt->server_type != RTSP_SERVER_REAL)
1078 av_strlcat(transport, "unicast;", sizeof(transport));
1079 av_strlcatf(transport, sizeof(transport),
1080 "client_port=%d", port);
f830c9a4
RB
1081 if (rt->transport == RTSP_TRANSPORT_RTP &&
1082 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1083 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1084 }
1085
1086 /* RTP/TCP */
90abbdba 1087 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1088 /** For WMS streams, the application streams are only used for
1089 * UDP. When trying to set it up for TCP streams, the server
1090 * will return an error. Therefore, we skip those streams. */
1091 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1092 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1093 AVMEDIA_TYPE_DATA)
090438cc 1094 continue;
0ad306bc 1095 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1096 "%s/TCP;", trans_pref);
1097 if (rt->server_type == RTSP_SERVER_WMS)
1098 av_strlcat(transport, "unicast;", sizeof(transport));
1099 av_strlcatf(transport, sizeof(transport),
1100 "interleaved=%d-%d",
1101 interleave, interleave + 1);
1102 interleave += 2;
1617ad97
FB
1103 }
1104
90abbdba 1105 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1106 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1107 "%s/UDP;multicast", trans_pref);
1617ad97 1108 }
69adcc4f
MS
1109 if (s->oformat) {
1110 av_strlcat(transport, ";mode=receive", sizeof(transport));
1111 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1112 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1113 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1114 snprintf(cmd, sizeof(cmd),
b6892136 1115 "Transport: %s\r\n",
b17d11c6 1116 transport);
2e889ae4 1117 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1118 char real_res[41], real_csum[9];
1119 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1120 real_challenge);
1121 av_strlcatf(cmd, sizeof(cmd),
1122 "If-Match: %s\r\n"
1123 "RealChallenge2: %s, sd=%s\r\n",
1124 rt->session_id, real_res, real_csum);
1125 }
b17d11c6 1126 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1127 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1128 err = 1;
1129 goto fail;
7e6ca34f
RB
1130 } else if (reply->status_code != RTSP_STATUS_OK ||
1131 reply->nb_transports != 1) {
1617ad97
FB
1132 err = AVERROR_INVALIDDATA;
1133 goto fail;
1134 }
1135
1136 /* XXX: same protocol for all streams is required */
1137 if (i > 0) {
119b4668
RB
1138 if (reply->transports[0].lower_transport != rt->lower_transport ||
1139 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1140 err = AVERROR_INVALIDDATA;
1141 goto fail;
1142 }
1143 } else {
90abbdba 1144 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1145 rt->transport = reply->transports[0].transport;
1617ad97
FB
1146 }
1147
2901cc9a 1148 /* close RTP connection if not chosen */
90abbdba
RB
1149 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1150 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1151 url_close(rtsp_st->rtp_handle);
1152 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1153 }
1154
90abbdba
RB
1155 switch(reply->transports[0].lower_transport) {
1156 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1157 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1158 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1159 break;
115329f1 1160
c8965800
RB
1161 case RTSP_LOWER_TRANSPORT_UDP: {
1162 char url[1024];
1163
619298a8
JW
1164 /* Use source address if specified */
1165 if (reply->transports[0].source[0]) {
1166 ff_url_join(url, sizeof(url), "rtp", NULL,
1167 reply->transports[0].source,
1168 reply->transports[0].server_port_min, NULL);
1169 } else {
7bac991f
RB
1170 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1171 reply->transports[0].server_port_min, NULL);
619298a8 1172 }
c8965800
RB
1173 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1174 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1175 err = AVERROR_INVALIDDATA;
1176 goto fail;
1617ad97 1177 }
9c8fa20d
MS
1178 /* Try to initialize the connection state in a
1179 * potential NAT router by sending dummy packets.
1180 * RTP/RTCP dummy packets are used for RDT, too.
1181 */
30ff7c5c 1182 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat)
9c8fa20d 1183 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1184 break;
c8965800
RB
1185 }
1186 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1187 char url[1024], namebuf[50];
1188 struct sockaddr_storage addr;
c8965800
RB
1189 int port, ttl;
1190
7934b15d
MS
1191 if (reply->transports[0].destination.ss_family) {
1192 addr = reply->transports[0].destination;
c8965800
RB
1193 port = reply->transports[0].port_min;
1194 ttl = reply->transports[0].ttl;
1195 } else {
7934b15d 1196 addr = rtsp_st->sdp_ip;
c8965800
RB
1197 port = rtsp_st->sdp_port;
1198 ttl = rtsp_st->sdp_ttl;
1199 }
7934b15d
MS
1200 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1201 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1202 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1203 port, "?ttl=%d", ttl);
c8965800
RB
1204 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1205 err = AVERROR_INVALIDDATA;
1206 goto fail;
1617ad97
FB
1207 }
1208 break;
1209 }
c8965800 1210 }
d1ccf0e0 1211
ee0cb67f 1212 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1213 goto fail;
1617ad97
FB
1214 }
1215
30e79845
RB
1216 if (reply->timeout > 0)
1217 rt->timeout = reply->timeout;
1218
2e889ae4 1219 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1220 rt->need_subscription = 1;
1221
53620bba
RB
1222 return 0;
1223
1224fail:
c8965800 1225 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1226 if (rt->rtsp_streams[i]->rtp_handle) {
1227 url_close(rt->rtsp_streams[i]->rtp_handle);
1228 rt->rtsp_streams[i]->rtp_handle = NULL;
1229 }
1230 }
53620bba
RB
1231 return err;
1232}
1233
1ced9da3
LA
1234static int rtsp_read_play(AVFormatContext *s)
1235{
1236 RTSPState *rt = s->priv_data;
1237 RTSPMessageHeader reply1, *reply = &reply1;
5948f822 1238 int i;
1ced9da3
LA
1239 char cmd[1024];
1240
1241 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
b20359f5 1242 rt->nb_byes = 0;
1ced9da3
LA
1243
1244 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1245 if (rt->state == RTSP_STATE_PAUSED) {
b17d11c6 1246 cmd[0] = 0;
1ced9da3
LA
1247 } else {
1248 snprintf(cmd, sizeof(cmd),
1ced9da3 1249 "Range: npt=%0.3f-\r\n",
1ced9da3
LA
1250 (double)rt->seek_timestamp / AV_TIME_BASE);
1251 }
b17d11c6 1252 ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
1ced9da3
LA
1253 if (reply->status_code != RTSP_STATUS_OK) {
1254 return -1;
1255 }
5948f822
MS
1256 if (reply->range_start != AV_NOPTS_VALUE &&
1257 rt->transport == RTSP_TRANSPORT_RTP) {
1258 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1259 RTSPStream *rtsp_st = rt->rtsp_streams[i];
1260 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1261 AVStream *st = NULL;
8d168a92
MS
1262 if (!rtpctx)
1263 continue;
5948f822
MS
1264 if (rtsp_st->stream_index >= 0)
1265 st = s->streams[rtsp_st->stream_index];
1266 rtpctx->last_rtcp_ntp_time = AV_NOPTS_VALUE;
1267 rtpctx->first_rtcp_ntp_time = AV_NOPTS_VALUE;
1268 if (st)
1269 rtpctx->range_start_offset = av_rescale_q(reply->range_start,
1270 AV_TIME_BASE_Q,
1271 st->time_base);
1272 }
1273 }
1ced9da3 1274 }
c02fd3d2 1275 rt->state = RTSP_STATE_STREAMING;
1ced9da3
LA
1276 return 0;
1277}
1278
6e69f6c4 1279static int rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
e23d195d
MS
1280{
1281 RTSPState *rt = s->priv_data;
e23d195d
MS
1282 char cmd[1024];
1283 unsigned char *content = NULL;
1284 int ret;
1285
1286 /* describe the stream */
1287 snprintf(cmd, sizeof(cmd),
b17d11c6 1288 "Accept: application/sdp\r\n");
e23d195d
MS
1289 if (rt->server_type == RTSP_SERVER_REAL) {
1290 /**
1291 * The Require: attribute is needed for proper streaming from
1292 * Realmedia servers.
1293 */
1294 av_strlcat(cmd,
1295 "Require: com.real.retain-entity-for-setup\r\n",
1296 sizeof(cmd));
1297 }
b17d11c6 1298 ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
e23d195d
MS
1299 if (!content)
1300 return AVERROR_INVALIDDATA;
1301 if (reply->status_code != RTSP_STATUS_OK) {
1302 av_freep(&content);
1303 return AVERROR_INVALIDDATA;
1304 }
1305
1306 /* now we got the SDP description, we parse it */
1307 ret = sdp_parse(s, (const char *)content);
1308 av_freep(&content);
1309 if (ret < 0)
1310 return AVERROR_INVALIDDATA;
1311
1312 return 0;
1313}
1314
26cb700c 1315static int rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
3e24c770
MS
1316{
1317 RTSPState *rt = s->priv_data;
1318 RTSPMessageHeader reply1, *reply = &reply1;
3e24c770
MS
1319 int i;
1320 char *sdp;
26cb700c 1321 AVFormatContext sdp_ctx, *ctx_array[1];
c07c6f81
MS
1322
1323 rt->start_time = av_gettime();
3e24c770
MS
1324
1325 /* Announce the stream */
28450066 1326 sdp = av_mallocz(SDP_MAX_SIZE);
3e24c770
MS
1327 if (sdp == NULL)
1328 return AVERROR(ENOMEM);
26cb700c
MS
1329 /* We create the SDP based on the RTSP AVFormatContext where we
1330 * aren't allowed to change the filename field. (We create the SDP
1331 * based on the RTSP context since the contexts for the RTP streams
1332 * don't exist yet.) In order to specify a custom URL with the actual
1333 * peer IP instead of the originally specified hostname, we create
1334 * a temporary copy of the AVFormatContext, where the custom URL is set.
1335 *
1336 * FIXME: Create the SDP without copying the AVFormatContext.
1337 * This either requires setting up the RTP stream AVFormatContexts
1338 * already here (complicating things immensely) or getting a more
1339 * flexible SDP creation interface.
1340 */
1341 sdp_ctx = *s;
1342 ff_url_join(sdp_ctx.filename, sizeof(sdp_ctx.filename),
1343 "rtsp", NULL, addr, -1, NULL);
1344 ctx_array[0] = &sdp_ctx;
28450066 1345 if (avf_sdp_create(ctx_array, 1, sdp, SDP_MAX_SIZE)) {
3e24c770
MS
1346 av_free(sdp);
1347 return AVERROR_INVALIDDATA;
1348 }
1349 av_log(s, AV_LOG_INFO, "SDP:\n%s\n", sdp);
b17d11c6
MS
1350 ff_rtsp_send_cmd_with_content(s, "ANNOUNCE", rt->control_uri,
1351 "Content-Type: application/sdp\r\n",
1352 reply, NULL, sdp, strlen(sdp));
3e24c770
MS
1353 av_free(sdp);
1354 if (reply->status_code != RTSP_STATUS_OK)
1355 return AVERROR_INVALIDDATA;
1356
1357 /* Set up the RTSPStreams for each AVStream */
1358 for (i = 0; i < s->nb_streams; i++) {
1359 RTSPStream *rtsp_st;
1360 AVStream *st = s->streams[i];
1361
1362 rtsp_st = av_mallocz(sizeof(RTSPStream));
1363 if (!rtsp_st)
1364 return AVERROR(ENOMEM);
1365 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
1366
1367 st->priv_data = rtsp_st;
1368 rtsp_st->stream_index = i;
1369
db76ca7f 1370 av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));
3e24c770
MS
1371 /* Note, this must match the relative uri set in the sdp content */
1372 av_strlcatf(rtsp_st->control_url, sizeof(rtsp_st->control_url),
1373 "/streamid=%d", i);
1374 }
1375
1376 return 0;
1377}
1378
b8c2c41d
JA
1379void ff_rtsp_close_connections(AVFormatContext *s)
1380{
1381 RTSPState *rt = s->priv_data;
1382 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1383 url_close(rt->rtsp_hd);
6217b645 1384 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1385}
1386
3307e6ea 1387int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1388{
1389 RTSPState *rt = s->priv_data;
921da217
LB
1390 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1391 char *option_list, *option, *filename;
03f8fc08 1392 int port, err, tcp_fd;
354b7573 1393 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1394 int lower_transport_mask = 0;
1cf151e9 1395 char real_challenge[64];
03f8fc08
MS
1396 struct sockaddr_storage peer;
1397 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1398
1399 if (!ff_network_init())
1400 return AVERROR(EIO);
c8965800 1401redirect:
f5d33f52 1402 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1403 /* extract hostname and port */
f3bfe388 1404 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1405 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1406 if (*auth) {
aa8bf2fb 1407 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1408 }
53620bba
RB
1409 if (port < 0)
1410 port = RTSP_DEFAULT_PORT;
1411
1412 /* search for options */
602eb779 1413 option_list = strrchr(path, '?');
53620bba 1414 if (option_list) {
2a21adf9
MS
1415 /* Strip out the RTSP specific options, write out the rest of
1416 * the options back into the same string. */
1417 filename = option_list;
c8965800 1418 while (option_list) {
53620bba 1419 /* move the option pointer */
921da217 1420 option = ++option_list;
53620bba
RB
1421 option_list = strchr(option_list, '&');
1422 if (option_list)
921da217
LB
1423 *option_list = 0;
1424
53620bba 1425 /* handle the options */
c8965800 1426 if (!strcmp(option, "udp")) {
7a033e08 1427 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1428 } else if (!strcmp(option, "multicast")) {
7a033e08 1429 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1430 } else if (!strcmp(option, "tcp")) {
7a033e08 1431 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1432 } else if(!strcmp(option, "http")) {
1433 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1434 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1435 } else {
2a21adf9
MS
1436 /* Write options back into the buffer, using memmove instead
1437 * of strcpy since the strings may overlap. */
1438 int len = strlen(option);
1439 memmove(++filename, option, len);
1440 filename += len;
921da217
LB
1441 if (option_list) *filename = '&';
1442 }
53620bba 1443 }
921da217 1444 *filename = 0;
53620bba
RB
1445 }
1446
90abbdba 1447 if (!lower_transport_mask)
2a1d51c5 1448 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1449
3e24c770 1450 if (s->oformat) {
b7dc88fc
MS
1451 /* Only UDP or TCP - UDP multicast isn't supported. */
1452 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1453 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1454 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1455 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1456 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1457 err = AVERROR(EINVAL);
1458 goto fail;
1459 }
1460 }
1461
4bc5cc23
MS
1462 /* Construct the URI used in request; this is similar to s->filename,
1463 * but with authentication credentials removed and RTSP specific options
1464 * stripped out. */
1465 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1466 host, port, "%s", path);
1467
f5d33f52
JA
1468 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1469 /* set up initial handshake for tunneling */
1470 char httpname[1024];
1471 char sessioncookie[17];
1472 char headers[1024];
1473
10ed37b5 1474 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1475 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1476 av_get_random_seed(), av_get_random_seed());
1477
1478 /* GET requests */
9290f15d 1479 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1480 err = AVERROR(EIO);
1481 goto fail;
1482 }
1483
1484 /* generate GET headers */
1485 snprintf(headers, sizeof(headers),
1486 "x-sessioncookie: %s\r\n"
1487 "Accept: application/x-rtsp-tunnelled\r\n"
1488 "Pragma: no-cache\r\n"
1489 "Cache-Control: no-cache\r\n",
1490 sessioncookie);
00e4a1f4 1491 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1492
1493 /* complete the connection */
9290f15d 1494 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1495 err = AVERROR(EIO);
1496 goto fail;
1497 }
1498
1499 /* POST requests */
9290f15d 1500 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1501 err = AVERROR(EIO);
1502 goto fail;
1503 }
1504
1505 /* generate POST headers */
1506 snprintf(headers, sizeof(headers),
1507 "x-sessioncookie: %s\r\n"
1508 "Content-Type: application/x-rtsp-tunnelled\r\n"
1509 "Pragma: no-cache\r\n"
1510 "Cache-Control: no-cache\r\n"
1511 "Content-Length: 32767\r\n"
1512 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1513 sessioncookie);
00e4a1f4
JA
1514 ff_http_set_headers(rt->rtsp_hd_out, headers);
1515 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1516
a8ead332
MS
1517 /* Initialize the authentication state for the POST session. The HTTP
1518 * protocol implementation doesn't properly handle multi-pass
1519 * authentication for POST requests, since it would require one of
1520 * the following:
1521 * - implementing Expect: 100-continue, which many HTTP servers
1522 * don't support anyway, even less the RTSP servers that do HTTP
1523 * tunneling
1524 * - sending the whole POST data until getting a 401 reply specifying
1525 * what authentication method to use, then resending all that data
1526 * - waiting for potential 401 replies directly after sending the
1527 * POST header (waiting for some unspecified time)
1528 * Therefore, we copy the full auth state, which works for both basic
1529 * and digest. (For digest, we would have to synchronize the nonce
1530 * count variable between the two sessions, if we'd do more requests
1531 * with the original session, though.)
1532 */
1533 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1534
9290f15d
MS
1535 /* complete the connection */
1536 if (url_connect(rt->rtsp_hd_out)) {
1537 err = AVERROR(EIO);
1538 goto fail;
1539 }
f5d33f52 1540 } else {
48e77473 1541 /* open the tcp connection */
41874d0a 1542 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1543 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1544 err = AVERROR(EIO);
1545 goto fail;
1546 }
00e4a1f4 1547 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1548 }
53620bba
RB
1549 rt->seq = 0;
1550
00e4a1f4 1551 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1552 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1553 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1554 NULL, 0, NI_NUMERICHOST);
1555 }
1556
c8965800
RB
1557 /* request options supported by the server; this also detects server
1558 * type */
1cf151e9 1559 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1560 cmd[0] = 0;
2e889ae4 1561 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1562 av_strlcat(cmd,
1563 /**
1564 * The following entries are required for proper
1565 * streaming from a Realmedia server. They are
1566 * interdependent in some way although we currently
1567 * don't quite understand how. Values were copied
1568 * from mplayer SVN r23589.
1569 * @param CompanyID is a 16-byte ID in base64
1570 * @param ClientChallenge is a 16-byte ID in hex
1571 */
1572 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1573 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1574 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1575 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1576 sizeof(cmd));
b17d11c6 1577 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1578 if (reply->status_code != RTSP_STATUS_OK) {
1579 err = AVERROR_INVALIDDATA;
1580 goto fail;
1581 }
1582
1583 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1584 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1585 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1586 continue;
7a86bafa
RB
1587 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1588 rt->server_type = RTSP_SERVER_WMS;
c8965800 1589 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1590 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1591 break;
1592 }
1593
3e24c770 1594 if (s->iformat)
6e69f6c4 1595 err = rtsp_setup_input_streams(s, reply);
3e24c770 1596 else
26cb700c 1597 err = rtsp_setup_output_streams(s, host);
e23d195d 1598 if (err)
53620bba 1599 goto fail;
53620bba 1600
8a8754d8 1601 do {
c8965800
RB
1602 int lower_transport = ff_log2_tab[lower_transport_mask &
1603 ~(lower_transport_mask - 1)];
8a8754d8 1604
90abbdba 1605 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1606 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1607 real_challenge : NULL);
8a8754d8 1608 if (err < 0)
7e6ca34f 1609 goto fail;
90abbdba
RB
1610 lower_transport_mask &= ~(1 << lower_transport);
1611 if (lower_transport_mask == 0 && err == 1) {
adef229e 1612 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1613 goto fail;
1614 }
1615 } while (err);
53620bba 1616
ff762d6e 1617 rt->state = RTSP_STATE_IDLE;
c8965800 1618 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1619 return 0;
1620 fail:
3307e6ea 1621 ff_rtsp_close_streams(s);
b8c2c41d 1622 ff_rtsp_close_connections(s);
35cfd646 1623 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1624 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1625 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1626 reply->status_code,
1627 s->filename);
1628 goto redirect;
1629 }
57b5555c 1630 ff_network_close();
1617ad97
FB
1631 return err;
1632}
6f5a3d0a 1633#endif
1617ad97 1634
6f5a3d0a 1635#if CONFIG_RTSP_DEMUXER
4280f9bb
MS
1636static int rtsp_read_header(AVFormatContext *s,
1637 AVFormatParameters *ap)
1638{
be73ba2f 1639 RTSPState *rt = s->priv_data;
4280f9bb
MS
1640 int ret;
1641
3307e6ea 1642 ret = ff_rtsp_connect(s);
4280f9bb
MS
1643 if (ret)
1644 return ret;
1645
be73ba2f
AJ
1646 rt->real_setup_cache = av_mallocz(2 * s->nb_streams * sizeof(*rt->real_setup_cache));
1647 if (!rt->real_setup_cache)
1648 return AVERROR(ENOMEM);
1649 rt->real_setup = rt->real_setup_cache + s->nb_streams * sizeof(*rt->real_setup);
1650
4280f9bb
MS
1651 if (ap->initial_pause) {
1652 /* do not start immediately */
1653 } else {
1654 if (rtsp_read_play(s) < 0) {
3307e6ea 1655 ff_rtsp_close_streams(s);
b8c2c41d 1656 ff_rtsp_close_connections(s);
4280f9bb
MS
1657 return AVERROR_INVALIDDATA;
1658 }
1659 }
1660
1661 return 0;
1662}
1663
0e59034e
RB
1664static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1665 uint8_t *buf, int buf_size)
1666{
1667 RTSPState *rt = s->priv_data;
1668 RTSPStream *rtsp_st;
1669 fd_set rfds;
a1ba71aa 1670 int fd, fd_rtcp, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1671 struct timeval tv;
1672
c8965800 1673 for (;;) {
0e59034e
RB
1674 if (url_interrupt_cb())
1675 return AVERROR(EINTR);
1676 FD_ZERO(&rfds);
1677 if (rt->rtsp_hd) {
1678 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1679 FD_SET(tcp_fd, &rfds);
1680 } else {
1681 fd_max = 0;
1682 tcp_fd = -1;
1683 }
c8965800 1684 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1685 rtsp_st = rt->rtsp_streams[i];
1686 if (rtsp_st->rtp_handle) {
0e59034e 1687 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1688 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1689 if (FFMAX(fd, fd_rtcp) > fd_max)
1690 fd_max = FFMAX(fd, fd_rtcp);
0e59034e 1691 FD_SET(fd, &rfds);
a1ba71aa 1692 FD_SET(fd_rtcp, &rfds);
0e59034e
RB
1693 }
1694 }
1695 tv.tv_sec = 0;
9cba6f5f 1696 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1697 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1698 if (n > 0) {
9cba6f5f 1699 timeout_cnt = 0;
c8965800 1700 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1701 rtsp_st = rt->rtsp_streams[i];
1702 if (rtsp_st->rtp_handle) {
1703 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1704 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1705 if (FD_ISSET(fd_rtcp, &rfds) || FD_ISSET(fd, &rfds)) {
0e59034e
RB
1706 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1707 if (ret > 0) {
1708 *prtsp_st = rtsp_st;
1709 return ret;
1710 }
1711 }
1712 }
1713 }
1714#if CONFIG_RTSP_DEMUXER
27000636 1715 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1716 RTSPMessageHeader reply;
1717
3032276b
MS
1718 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1719 if (ret < 0)
1720 return ret;
0e59034e 1721 /* XXX: parse message */
c02fd3d2 1722 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1723 return 0;
1724 }
1725#endif
9cba6f5f 1726 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1727 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1728 } else if (n < 0 && errno != EINTR)
1729 return AVERROR(errno);
0e59034e
RB
1730 }
1731}
1732
8b1ab7bf
FB
1733static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1734 uint8_t *buf, int buf_size)
1617ad97
FB
1735{
1736 RTSPState *rt = s->priv_data;
b6892136 1737 int id, len, i, ret;
1617ad97 1738 RTSPStream *rtsp_st;
1617ad97 1739
b6892136 1740#ifdef DEBUG_RTP_TCP
67c9cd69 1741 dprintf(s, "tcp_read_packet:\n");
b6892136 1742#endif
c8965800
RB
1743redo:
1744 for (;;) {
7e726132
RB
1745 RTSPMessageHeader reply;
1746
3307e6ea 1747 ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
2401660d
MS
1748 if (ret < 0)
1749 return ret;
7e726132 1750 if (ret == 1) /* received '$' */
1617ad97 1751 break;
7e726132 1752 /* XXX: parse message */
c02fd3d2 1753 if (rt->state != RTSP_STATE_STREAMING)
fccb1770 1754 return 0;
1617ad97 1755 }
0e848977 1756 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1757 if (ret != 3)
8b1ab7bf 1758 return -1;
c8965800 1759 id = buf[0];
80fb8234 1760 len = AV_RB16(buf + 1);
b6892136 1761#ifdef DEBUG_RTP_TCP
67c9cd69 1762 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1763#endif
8b1ab7bf 1764 if (len > buf_size || len < 12)
1617ad97
FB
1765 goto redo;
1766 /* get the data */
0e848977 1767 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1768 if (ret != len)
8b1ab7bf 1769 return -1;
985b05d3 1770 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1771 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1772 return -1;
115329f1 1773
1617ad97 1774 /* find the matching stream */
c8965800 1775 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1776 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1777 if (id >= rtsp_st->interleaved_min &&
1778 id <= rtsp_st->interleaved_max)
1617ad97
FB
1779 goto found;
1780 }
1781 goto redo;
c8965800 1782found:
8b1ab7bf
FB
1783 *prtsp_st = rtsp_st;
1784 return len;
1617ad97
FB
1785}
1786
0e59034e
RB
1787static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1788{
1789 RTSPState *rt = s->priv_data;
1790 int ret, len;
1791 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1792 RTSPStream *rtsp_st;
1793
b20359f5
JA
1794 if (rt->nb_byes == rt->nb_rtsp_streams)
1795 return AVERROR_EOF;
1796
0e59034e
RB
1797 /* get next frames from the same RTP packet */
1798 if (rt->cur_transport_priv) {
c8965800 1799 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1800 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1801 } else
0e59034e
RB
1802 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1803 if (ret == 0) {
1804 rt->cur_transport_priv = NULL;
1805 return 0;
1806 } else if (ret == 1) {
1807 return 0;
c8965800 1808 } else
0e59034e 1809 rt->cur_transport_priv = NULL;
0e59034e
RB
1810 }
1811
1812 /* read next RTP packet */
1813 redo:
1814 switch(rt->lower_transport) {
1815 default:
1816#if CONFIG_RTSP_DEMUXER
1817 case RTSP_LOWER_TRANSPORT_TCP:
1818 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1819 break;
1820#endif
1821 case RTSP_LOWER_TRANSPORT_UDP:
1822 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1823 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1824 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1825 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1826 break;
1827 }
1828 if (len < 0)
1829 return len;
1830 if (len == 0)
1831 return AVERROR_EOF;
c8965800 1832 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1833 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48 1834 } else {
0e59034e 1835 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48
MS
1836 if (ret < 0) {
1837 /* Either bad packet, or a RTCP packet. Check if the
1838 * first_rtcp_ntp_time field was initialized. */
1839 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1840 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1841 /* first_rtcp_ntp_time has been initialized for this stream,
1842 * copy the same value to all other uninitialized streams,
1843 * in order to map their timestamp origin to the same ntp time
1844 * as this one. */
1845 int i;
1846 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1847 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
2cab6b48
MS
1848 if (rtpctx2 &&
1849 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE)
1850 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
1851 }
1852 }
b20359f5
JA
1853 if (ret == -RTCP_BYE) {
1854 rt->nb_byes++;
1855
1856 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1857 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1858
1859 if (rt->nb_byes == rt->nb_rtsp_streams)
1860 return AVERROR_EOF;
1861 }
2cab6b48
MS
1862 }
1863 }
0e59034e
RB
1864 if (ret < 0)
1865 goto redo;
c8965800 1866 if (ret == 1)
0e59034e
RB
1867 /* more packets may follow, so we save the RTP context */
1868 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1869
1870 return ret;
1871}
1872
c8965800 1873static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1874{
1875 RTSPState *rt = s->priv_data;
98713182 1876 int ret;
30e79845
RB
1877 RTSPMessageHeader reply1, *reply = &reply1;
1878 char cmd[1024];
8b1ab7bf 1879
572c6a38 1880 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1881 int i;
1256d16b 1882
572c6a38 1883 for (i = 0; i < s->nb_streams; i++)
be73ba2f 1884 rt->real_setup[i] = s->streams[i]->discard;
572c6a38
RB
1885
1886 if (!rt->need_subscription) {
be73ba2f 1887 if (memcmp (rt->real_setup, rt->real_setup_cache,
572c6a38 1888 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1889 snprintf(cmd, sizeof(cmd),
7eaa646f 1890 "Unsubscribe: %s\r\n",
b17d11c6
MS
1891 rt->last_subscription);
1892 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1893 cmd, reply, NULL);
572c6a38
RB
1894 if (reply->status_code != RTSP_STATUS_OK)
1895 return AVERROR_INVALIDDATA;
1896 rt->need_subscription = 1;
1897 }
1256d16b 1898 }
1256d16b 1899
572c6a38
RB
1900 if (rt->need_subscription) {
1901 int r, rule_nr, first = 1;
1902
be73ba2f 1903 memcpy(rt->real_setup_cache, rt->real_setup,
572c6a38
RB
1904 sizeof(enum AVDiscard) * s->nb_streams);
1905 rt->last_subscription[0] = 0;
1906
1907 snprintf(cmd, sizeof(cmd),
b17d11c6 1908 "Subscribe: ");
572c6a38
RB
1909 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1910 rule_nr = 0;
1911 for (r = 0; r < s->nb_streams; r++) {
1912 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1913 if (s->streams[r]->discard != AVDISCARD_ALL) {
1914 if (!first)
1915 av_strlcat(rt->last_subscription, ",",
1916 sizeof(rt->last_subscription));
1917 ff_rdt_subscribe_rule(
1918 rt->last_subscription,
1919 sizeof(rt->last_subscription), i, rule_nr);
1920 first = 0;
1921 }
1922 rule_nr++;
1923 }
1924 }
1925 }
1926 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
b17d11c6
MS
1927 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1928 cmd, reply, NULL);
572c6a38
RB
1929 if (reply->status_code != RTSP_STATUS_OK)
1930 return AVERROR_INVALIDDATA;
1931 rt->need_subscription = 0;
1932
c02fd3d2 1933 if (rt->state == RTSP_STATE_STREAMING)
572c6a38
RB
1934 rtsp_read_play (s);
1935 }
1256d16b
RB
1936 }
1937
d7250724 1938 ret = rtsp_fetch_packet(s, pkt);
c8965800 1939 if (ret < 0)
98713182 1940 return ret;
30e79845
RB
1941
1942 /* send dummy request to keep TCP connection alive */
27014bf5 1943 if ((av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
30e79845 1944 if (rt->server_type == RTSP_SERVER_WMS) {
b17d11c6 1945 ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
30e79845 1946 } else {
b17d11c6 1947 ff_rtsp_send_cmd_async(s, "OPTIONS", "*", NULL);
30e79845
RB
1948 }
1949 }
1950
8b1ab7bf 1951 return 0;
1617ad97
FB
1952}
1953
ff762d6e
FB
1954/* pause the stream */
1955static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1956{
ff762d6e 1957 RTSPState *rt = s->priv_data;
a9e534d5 1958 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34 1959
c02fd3d2 1960 if (rt->state != RTSP_STATE_STREAMING)
ff762d6e 1961 return 0;
2e889ae4 1962 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
b17d11c6 1963 ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
99b2ac07
RB
1964 if (reply->status_code != RTSP_STATUS_OK) {
1965 return -1;
1966 }
1256d16b 1967 }
5f86057f
RB
1968 rt->state = RTSP_STATE_PAUSED;
1969 return 0;
b7b8fc34
FB
1970}
1971
115329f1 1972static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1973 int64_t timestamp, int flags)
ff762d6e
FB
1974{
1975 RTSPState *rt = s->priv_data;
115329f1 1976
c8965800
RB
1977 rt->seek_timestamp = av_rescale_q(timestamp,
1978 s->streams[stream_index]->time_base,
1979 AV_TIME_BASE_Q);
ff762d6e
FB
1980 switch(rt->state) {
1981 default:
1982 case RTSP_STATE_IDLE:
1983 break;
c02fd3d2 1984 case RTSP_STATE_STREAMING:
ec606b36
LB
1985 if (rtsp_read_pause(s) != 0)
1986 return -1;
1987 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1988 if (rtsp_read_play(s) != 0)
1989 return -1;
1990 break;
1991 case RTSP_STATE_PAUSED:
1992 rt->state = RTSP_STATE_IDLE;
1993 break;
1994 }
1995 return 0;
1996}
1997
1617ad97
FB
1998static int rtsp_read_close(AVFormatContext *s)
1999{
2000 RTSPState *rt = s->priv_data;
1617ad97 2001
b6892136 2002#if 0
1617ad97 2003 /* NOTE: it is valid to flush the buffer here */
90abbdba 2004 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
2005 url_fclose(&rt->rtsp_gb);
2006 }
b6892136 2007#endif
b17d11c6 2008 ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
1617ad97 2009
3307e6ea 2010 ff_rtsp_close_streams(s);
b8c2c41d 2011 ff_rtsp_close_connections(s);
57b5555c 2012 ff_network_close();
be73ba2f
AJ
2013 rt->real_setup = NULL;
2014 av_freep(&rt->real_setup_cache);
1617ad97
FB
2015 return 0;
2016}
2017
d2a067d1 2018AVInputFormat rtsp_demuxer = {
1617ad97 2019 "rtsp",
bde15e74 2020 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
2021 sizeof(RTSPState),
2022 rtsp_probe,
2023 rtsp_read_header,
2024 rtsp_read_packet,
2025 rtsp_read_close,
ff762d6e 2026 rtsp_read_seek,
bb76a117 2027 .flags = AVFMT_NOFILE,
ff762d6e
FB
2028 .read_play = rtsp_read_play,
2029 .read_pause = rtsp_read_pause,
1617ad97 2030};
96862926 2031#endif
1617ad97 2032
cb1fdc61 2033static int sdp_probe(AVProbeData *p1)
93ced3e8 2034{
0e1ceacd 2035 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 2036
3fbd12d1 2037 /* we look for a line beginning "c=IN IP" */
0e1ceacd 2038 while (p < p_end && *p != '\0') {
3fbd12d1
MS
2039 if (p + sizeof("c=IN IP") - 1 < p_end &&
2040 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 2041 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 2042
c8965800 2043 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 2044 if (++p >= p_end)
cb1fdc61 2045 break;
cb1fdc61
FB
2046 if (*p == '\r')
2047 p++;
2048 }
93ced3e8
FB
2049 return 0;
2050}
2051
c8965800 2052static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 2053{
8b1ab7bf 2054 RTSPState *rt = s->priv_data;
93ced3e8
FB
2055 RTSPStream *rtsp_st;
2056 int size, i, err;
2057 char *content;
2058 char url[1024];
2059
57b5555c
MS
2060 if (!ff_network_init())
2061 return AVERROR(EIO);
2062
93ced3e8
FB
2063 /* read the whole sdp file */
2064 /* XXX: better loading */
2065 content = av_malloc(SDP_MAX_SIZE);
899681cd 2066 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2067 if (size <= 0) {
2068 av_free(content);
2069 return AVERROR_INVALIDDATA;
2070 }
2071 content[size] ='\0';
2072
2073 sdp_parse(s, content);
2074 av_free(content);
2075
2076 /* open each RTP stream */
c8965800 2077 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 2078 char namebuf[50];
8b1ab7bf 2079 rtsp_st = rt->rtsp_streams[i];
115329f1 2080
3fbd12d1
MS
2081 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
2082 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 2083 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 2084 namebuf, rtsp_st->sdp_port,
57b5555c
MS
2085 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
2086 rtsp_st->sdp_ttl);
dbf30963 2087 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
2088 err = AVERROR_INVALIDDATA;
2089 goto fail;
2090 }
ee0cb67f 2091 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2092 goto fail;
93ced3e8
FB
2093 }
2094 return 0;
c8965800 2095fail:
3307e6ea 2096 ff_rtsp_close_streams(s);
57b5555c 2097 ff_network_close();
93ced3e8
FB
2098 return err;
2099}
2100
93ced3e8
FB
2101static int sdp_read_close(AVFormatContext *s)
2102{
3307e6ea 2103 ff_rtsp_close_streams(s);
57b5555c 2104 ff_network_close();
93ced3e8
FB
2105 return 0;
2106}
2107
ff70e601 2108AVInputFormat sdp_demuxer = {
93ced3e8 2109 "sdp",
bde15e74 2110 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
2111 sizeof(RTSPState),
2112 sdp_probe,
2113 sdp_read_header,
d7250724 2114 rtsp_fetch_packet,
93ced3e8
FB
2115 sdp_read_close,
2116};