Make ff_float_to_int16*_c() static.
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
1617ad97
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
1617ad97 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
1617ad97
FB
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1617ad97 20 */
245976da 21
f9337897 22#include "libavutil/base64.h"
245976da 23#include "libavutil/avstring.h"
6a5d31ac 24#include "libavutil/intreadwrite.h"
f5d33f52 25#include "libavutil/random_seed.h"
1617ad97
FB
26#include "avformat.h"
27
db0ed93e 28#include <sys/time.h>
b250f9c6 29#if HAVE_SYS_SELECT_H
933bd8e2 30#include <sys/select.h>
6ad1c9c9 31#endif
ea452b54 32#include <strings.h>
e4a9e3cc 33#include "internal.h"
42572ef5 34#include "network.h"
cbfa66d0 35#include "os_support.h"
f5d33f52 36#include "http.h"
c971ff19 37#include "rtsp.h"
1617ad97 38
302879cb 39#include "rtpdec.h"
e9dea59f 40#include "rdt.h"
965a3ddb 41#include "rtpdec_formats.h"
a493f80a 42#include "rtpenc_chain.h"
4934884a 43
1617ad97 44//#define DEBUG
b6892136 45//#define DEBUG_RTP_TCP
1617ad97 46
c2bfd816 47/* Timeout values for socket select, in ms,
9cba6f5f
SG
48 * and read_packet(), in seconds */
49#define SELECT_TIMEOUT_MS 100
50#define READ_PACKET_TIMEOUT_S 10
51#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / SELECT_TIMEOUT_MS
91af5601 52#define SDP_MAX_SIZE 16384
96a7c975 53#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
9cba6f5f 54
1ef36a70
RB
55static void get_word_until_chars(char *buf, int buf_size,
56 const char *sep, const char **pp)
1617ad97
FB
57{
58 const char *p;
59 char *q;
60
61 p = *pp;
30619e6e 62 p += strspn(p, SPACE_CHARS);
1617ad97
FB
63 q = buf;
64 while (!strchr(sep, *p) && *p != '\0') {
65 if ((q - buf) < buf_size - 1)
66 *q++ = *p;
67 p++;
68 }
69 if (buf_size > 0)
70 *q = '\0';
71 *pp = p;
72}
73
1ef36a70
RB
74static void get_word_sep(char *buf, int buf_size, const char *sep,
75 const char **pp)
1617ad97 76{
1ef36a70
RB
77 if (**pp == '/') (*pp)++;
78 get_word_until_chars(buf, buf_size, sep, pp);
79}
1617ad97 80
1ef36a70
RB
81static void get_word(char *buf, int buf_size, const char **pp)
82{
83 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
84}
85
8bf0f969
MS
86/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
87 * and end time.
88 * Used for seeking in the rtp stream.
89 */
90static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
91{
92 char buf[256];
93
94 p += strspn(p, SPACE_CHARS);
95 if (!av_stristart(p, "npt=", &p))
96 return;
97
98 *start = AV_NOPTS_VALUE;
99 *end = AV_NOPTS_VALUE;
100
101 get_word_sep(buf, sizeof(buf), "-", &p);
102 *start = parse_date(buf, 1);
103 if (*p == '-') {
104 p++;
105 get_word_sep(buf, sizeof(buf), "-", &p);
106 *end = parse_date(buf, 1);
107 }
108// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
109// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
110}
111
112static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
113{
114 struct addrinfo hints, *ai = NULL;
115 memset(&hints, 0, sizeof(hints));
116 hints.ai_flags = AI_NUMERICHOST;
117 if (getaddrinfo(buf, NULL, &hints, &ai))
118 return -1;
119 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
120 freeaddrinfo(ai);
121 return 0;
122}
123
44b70ce5 124#if CONFIG_RTPDEC
003eb642
MS
125static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
126 RTSPStream *rtsp_st, AVCodecContext *codec)
127{
128 if (!handler)
129 return;
130 codec->codec_id = handler->codec_id;
131 rtsp_st->dynamic_handler = handler;
132 if (handler->open)
133 rtsp_st->dynamic_protocol_context = handler->open();
134}
135
c8965800 136/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 137static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 138 AVStream *st, RTSPStream *rtsp_st,
c8965800 139 int payload_type, const char *p)
93ced3e8 140{
86b6e387 141 AVCodecContext *codec = st->codec;
93ced3e8 142 char buf[256];
d1ccf0e0
RD
143 int i;
144 AVCodec *c;
7b49ce2e 145 const char *c_name;
93ced3e8 146
d1ccf0e0 147 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
148 * see if we can handle this kind of payload.
149 * The space should normally not be there but some Real streams or
150 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
151 * have a trailing space. */
152 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 153 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
154 RTPDynamicProtocolHandler *handler =
155 ff_rtp_handler_find_by_name(buf, codec->codec_type);
156 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
157 /* If no dynamic handler was found, check with the list of standard
158 * allocated types, if such a stream for some reason happens to
159 * use a private payload type. This isn't handled in rtpdec.c, since
160 * the format name from the rtpmap line never is passed into rtpdec. */
161 if (!rtsp_st->dynamic_handler)
162 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 163 } else {
c8965800
RB
164 /* We are in a standard case
165 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 166 /* search into AVRtpPayloadTypes[] */
7ed19d7f 167 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
168 }
169
170 c = avcodec_find_decoder(codec->codec_id);
171 if (c && c->name)
7b49ce2e 172 c_name = c->name;
d1ccf0e0 173 else
170870b7 174 c_name = "(null)";
d1ccf0e0 175
7515ed0c
RB
176 get_word_sep(buf, sizeof(buf), "/", &p);
177 i = atoi(buf);
178 switch (codec->codec_type) {
72415b2a 179 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
180 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
181 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
182 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
183 if (i > 0) {
184 codec->sample_rate = i;
86b6e387 185 av_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
186 get_word_sep(buf, sizeof(buf), "/", &p);
187 i = atoi(buf);
188 if (i > 0)
189 codec->channels = i;
190 // TODO: there is a bug here; if it is a mono stream, and
191 // less than 22000Hz, faad upconverts to stereo and twice
192 // the frequency. No problem, but the sample rate is being
193 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 194 }
7515ed0c
RB
195 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
196 codec->sample_rate);
197 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
198 codec->channels);
199 break;
72415b2a 200 case AVMEDIA_TYPE_VIDEO:
7515ed0c 201 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387
MS
202 if (i > 0)
203 av_set_pts_info(st, 32, 1, i);
7515ed0c
RB
204 break;
205 default:
206 break;
207 }
208 return 0;
93ced3e8
FB
209}
210
c2bfd816 211/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
212 * is broken out as a function because it is used in rtp_h264.c, which is
213 * forthcoming. */
3307e6ea 214int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 215 char *value, int value_size)
d0deedcb 216{
30619e6e 217 *p += strspn(*p, SPACE_CHARS);
c8965800 218 if (**p) {
d0deedcb
RM
219 get_word_sep(attr, attr_size, "=", p);
220 if (**p == '=')
221 (*p)++;
222 get_word_sep(value, value_size, ";", p);
223 if (**p == ';')
224 (*p)++;
225 return 1;
226 }
227 return 0;
228}
229
93ced3e8
FB
230typedef struct SDPParseState {
231 /* SDP only */
3fbd12d1 232 struct sockaddr_storage default_ip;
c8965800
RB
233 int default_ttl;
234 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
235} SDPParseState;
236
237static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
238 int letter, const char *buf)
239{
8b1ab7bf 240 RTSPState *rt = s->priv_data;
1617ad97
FB
241 char buf1[64], st_type[64];
242 const char *p;
72415b2a 243 enum AVMediaType codec_type;
fb65d2ca 244 int payload_type, i;
1617ad97
FB
245 AVStream *st;
246 RTSPStream *rtsp_st;
3fbd12d1 247 struct sockaddr_storage sdp_ip;
93ced3e8
FB
248 int ttl;
249
67c9cd69 250 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
251
252 p = buf;
cb760a47
RB
253 if (s1->skip_media && letter != 'm')
254 return;
c8965800 255 switch (letter) {
93ced3e8
FB
256 case 'c':
257 get_word(buf1, sizeof(buf1), &p);
258 if (strcmp(buf1, "IN") != 0)
259 return;
260 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 261 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
262 return;
263 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 264 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
265 return;
266 ttl = 16;
267 if (*p == '/') {
268 p++;
269 get_word_sep(buf1, sizeof(buf1), "/", &p);
270 ttl = atoi(buf1);
271 }
272 if (s->nb_streams == 0) {
273 s1->default_ip = sdp_ip;
274 s1->default_ttl = ttl;
275 } else {
276 st = s->streams[s->nb_streams - 1];
277 rtsp_st = st->priv_data;
278 rtsp_st->sdp_ip = sdp_ip;
279 rtsp_st->sdp_ttl = ttl;
280 }
281 break;
1617ad97 282 case 's':
2ef6c124 283 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
284 break;
285 case 'i':
286 if (s->nb_streams == 0) {
2ef6c124 287 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
288 break;
289 }
290 break;
291 case 'm':
292 /* new stream */
cb760a47 293 s1->skip_media = 0;
1617ad97
FB
294 get_word(st_type, sizeof(st_type), &p);
295 if (!strcmp(st_type, "audio")) {
72415b2a 296 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 297 } else if (!strcmp(st_type, "video")) {
72415b2a 298 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 299 } else if (!strcmp(st_type, "application")) {
72415b2a 300 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 301 } else {
cb760a47 302 s1->skip_media = 1;
1617ad97
FB
303 return;
304 }
1617ad97
FB
305 rtsp_st = av_mallocz(sizeof(RTSPStream));
306 if (!rtsp_st)
307 return;
8b1ab7bf
FB
308 rtsp_st->stream_index = -1;
309 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
310
311 rtsp_st->sdp_ip = s1->default_ip;
312 rtsp_st->sdp_ttl = s1->default_ttl;
313
93ced3e8
FB
314 get_word(buf1, sizeof(buf1), &p); /* port */
315 rtsp_st->sdp_port = atoi(buf1);
316
317 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 318
93ced3e8
FB
319 /* XXX: handle list of formats */
320 get_word(buf1, sizeof(buf1), &p); /* format list */
321 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 322
7ed19d7f 323 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
324 /* no corresponding stream */
325 } else {
326 st = av_new_stream(s, 0);
327 if (!st)
328 return;
329 st->priv_data = rtsp_st;
330 rtsp_st->stream_index = st->index;
01f4895c 331 st->codec->codec_type = codec_type;
d1ccf0e0 332 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 333 RTPDynamicProtocolHandler *handler;
8b1ab7bf 334 /* if standard payload type, we can find the codec right now */
bf6d9818 335 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
336 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
337 st->codec->sample_rate > 0)
86b6e387 338 av_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
339 /* Even static payload types may need a custom depacketizer */
340 handler = ff_rtp_handler_find_by_id(
341 rtsp_st->sdp_payload_type, st->codec->codec_type);
342 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
343 }
344 }
1617ad97 345 /* put a default control url */
00eb13e0 346 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 347 sizeof(rtsp_st->control_url));
1617ad97
FB
348 break;
349 case 'a':
00eb13e0
AS
350 if (av_strstart(p, "control:", &p)) {
351 if (s->nb_streams == 0) {
352 if (!strncmp(p, "rtsp://", 7))
353 av_strlcpy(rt->control_uri, p,
354 sizeof(rt->control_uri));
355 } else {
0b6a7ff4
MS
356 char proto[32];
357 /* get the control url */
358 st = s->streams[s->nb_streams - 1];
359 rtsp_st = st->priv_data;
115329f1 360
0b6a7ff4
MS
361 /* XXX: may need to add full url resolution */
362 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
363 NULL, NULL, 0, p);
364 if (proto[0] == '\0') {
365 /* relative control URL */
366 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
367 av_strlcat(rtsp_st->control_url, "/",
368 sizeof(rtsp_st->control_url));
369 av_strlcat(rtsp_st->control_url, p,
370 sizeof(rtsp_st->control_url));
371 } else
372 av_strlcpy(rtsp_st->control_url, p,
373 sizeof(rtsp_st->control_url));
00eb13e0 374 }
83d14c85 375 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 376 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 377 get_word(buf1, sizeof(buf1), &p);
93ced3e8 378 payload_type = atoi(buf1);
83d14c85 379 st = s->streams[s->nb_streams - 1];
ff16f551 380 rtsp_st = st->priv_data;
86b6e387 381 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
382 } else if (av_strstart(p, "fmtp:", &p) ||
383 av_strstart(p, "framesize:", &p)) {
93ced3e8 384 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
385 // let dynamic protocol handlers have a stab at the line.
386 get_word(buf1, sizeof(buf1), &p);
387 payload_type = atoi(buf1);
c8965800
RB
388 for (i = 0; i < s->nb_streams; i++) {
389 st = s->streams[i];
d0deedcb 390 rtsp_st = st->priv_data;
c8965800
RB
391 if (rtsp_st->sdp_payload_type == payload_type &&
392 rtsp_st->dynamic_handler &&
393 rtsp_st->dynamic_handler->parse_sdp_a_line)
394 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
395 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 396 }
c8965800 397 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
398 int64_t start, end;
399
400 // this is so that seeking on a streamed file can work.
401 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
402 s->start_time = start;
403 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
404 s->duration = (end == AV_NOPTS_VALUE) ?
405 AV_NOPTS_VALUE : end - start;
119b4668
RB
406 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
407 if (atoi(p) == 1)
408 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
409 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
410 s->nb_streams > 0) {
411 st = s->streams[s->nb_streams - 1];
412 st->codec->sample_rate = atoi(p);
1a30d541
RB
413 } else {
414 if (rt->server_type == RTSP_SERVER_WMS)
415 ff_wms_parse_sdp_a_line(s, p);
416 if (s->nb_streams > 0) {
c4a3d032
RB
417 if (rt->server_type == RTSP_SERVER_REAL)
418 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
419
420 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
421 if (rtsp_st->dynamic_handler &&
422 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
423 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
424 s->nb_streams - 1,
c4a3d032 425 rtsp_st->dynamic_protocol_context, buf);
1a30d541 426 }
1617ad97
FB
427 }
428 break;
429 }
430}
431
0526c6f7 432int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
433{
434 const char *p;
435 int letter;
9211bcdd
RB
436 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
437 * contain long SDP lines containing complete ASF Headers (several
438 * kB) or arrays of MDPR (RM stream descriptor) headers plus
439 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
440 * buffer is large.
441 *
afcea58c
JA
442 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
443 * in rtpdec_xiph.c. */
373afbaf 444 char buf[16384], *q;
93ced3e8 445 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 446
93ced3e8 447 memset(s1, 0, sizeof(SDPParseState));
1617ad97 448 p = content;
c8965800 449 for (;;) {
30619e6e 450 p += strspn(p, SPACE_CHARS);
1617ad97
FB
451 letter = *p;
452 if (letter == '\0')
453 break;
454 p++;
455 if (*p != '=')
456 goto next_line;
457 p++;
458 /* get the content */
459 q = buf;
b6892136 460 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
461 if ((q - buf) < sizeof(buf) - 1)
462 *q++ = *p;
463 p++;
464 }
465 *q = '\0';
93ced3e8 466 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
467 next_line:
468 while (*p != '\n' && *p != '\0')
469 p++;
470 if (*p == '\n')
471 p++;
472 }
473 return 0;
474}
44b70ce5 475#endif /* CONFIG_RTPDEC */
1617ad97 476
93e7490e
MS
477void ff_rtsp_undo_setup(AVFormatContext *s)
478{
479 RTSPState *rt = s->priv_data;
480 int i;
481
482 for (i = 0; i < rt->nb_rtsp_streams; i++) {
483 RTSPStream *rtsp_st = rt->rtsp_streams[i];
484 if (!rtsp_st)
485 continue;
486 if (rtsp_st->transport_priv) {
487 if (s->oformat) {
488 AVFormatContext *rtpctx = rtsp_st->transport_priv;
489 av_write_trailer(rtpctx);
490 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
491 uint8_t *ptr;
492 url_close_dyn_buf(rtpctx->pb, &ptr);
493 av_free(ptr);
494 } else {
495 url_fclose(rtpctx->pb);
496 }
497 av_metadata_free(&rtpctx->streams[0]->metadata);
498 av_metadata_free(&rtpctx->metadata);
499 av_free(rtpctx->streams[0]);
500 av_free(rtpctx);
501 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
502 ff_rdt_parse_close(rtsp_st->transport_priv);
503 else if (CONFIG_RTPDEC)
504 rtp_parse_close(rtsp_st->transport_priv);
505 }
506 rtsp_st->transport_priv = NULL;
507 if (rtsp_st->rtp_handle)
508 url_close(rtsp_st->rtp_handle);
509 rtsp_st->rtp_handle = NULL;
510 }
511}
512
1ced9da3 513/* close and free RTSP streams */
3307e6ea 514void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 515{
52aa4338 516 RTSPState *rt = s->priv_data;
1ced9da3
LA
517 int i;
518 RTSPStream *rtsp_st;
519
93e7490e 520 ff_rtsp_undo_setup(s);
c8965800 521 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
522 rtsp_st = rt->rtsp_streams[i];
523 if (rtsp_st) {
1ced9da3 524 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
525 rtsp_st->dynamic_handler->close(
526 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
527 }
528 }
529 av_free(rt->rtsp_streams);
530 if (rt->asf_ctx) {
531 av_close_input_stream (rt->asf_ctx);
532 rt->asf_ctx = NULL;
533 }
96a7c975 534 av_free(rt->recvbuf);
1ced9da3
LA
535}
536
c8965800 537static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
538{
539 RTSPState *rt = s->priv_data;
540 AVStream *st = NULL;
541
542 /* open the RTP context */
543 if (rtsp_st->stream_index >= 0)
544 st = s->streams[rtsp_st->stream_index];
545 if (!st)
546 s->ctx_flags |= AVFMTCTX_NOHEADER;
547
44b70ce5 548 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
549 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
550 rtsp_st->rtp_handle,
551 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 552 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 553 rtsp_st->rtp_handle = NULL;
44b70ce5 554 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
555 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
556 rtsp_st->dynamic_protocol_context,
557 rtsp_st->dynamic_handler);
44b70ce5 558 else if (CONFIG_RTPDEC)
1ced9da3 559 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
560 rtsp_st->sdp_payload_type,
561 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
562 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
563
564 if (!rtsp_st->transport_priv) {
565 return AVERROR(ENOMEM);
44b70ce5 566 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 567 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
568 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
569 rtsp_st->dynamic_protocol_context,
570 rtsp_st->dynamic_handler);
571 }
572 }
573
574 return 0;
575}
576
6f5a3d0a 577#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
578static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
579{
580 const char *p;
581 int v;
582
583 p = *pp;
30619e6e 584 p += strspn(p, SPACE_CHARS);
1617ad97
FB
585 v = strtol(p, (char **)&p, 10);
586 if (*p == '-') {
587 p++;
588 *min_ptr = v;
589 v = strtol(p, (char **)&p, 10);
590 *max_ptr = v;
591 } else {
592 *min_ptr = v;
593 *max_ptr = v;
594 }
595 *pp = p;
596}
597
598/* XXX: only one transport specification is parsed */
a9e534d5 599static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
600{
601 char transport_protocol[16];
602 char profile[16];
603 char lower_transport[16];
604 char parameter[16];
605 RTSPTransportField *th;
606 char buf[256];
115329f1 607
1617ad97 608 reply->nb_transports = 0;
115329f1 609
c8965800 610 for (;;) {
30619e6e 611 p += strspn(p, SPACE_CHARS);
1617ad97
FB
612 if (*p == '\0')
613 break;
614
615 th = &reply->transports[reply->nb_transports];
616
115329f1 617 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 618 "/", &p);
e1502118 619 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
620 get_word_sep(profile, sizeof(profile), "/;,", &p);
621 lower_transport[0] = '\0';
622 /* rtp/avp/<protocol> */
623 if (*p == '/') {
7ecc634e
LB
624 get_word_sep(lower_transport, sizeof(lower_transport),
625 ";,", &p);
119b4668
RB
626 }
627 th->transport = RTSP_TRANSPORT_RTP;
628 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
629 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 630 /* x-pn-tng/<protocol> */
e1502118
LB
631 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
632 profile[0] = '\0';
119b4668 633 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 634 }
b6892136 635 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 636 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 637 else
90abbdba 638 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 639
1617ad97
FB
640 if (*p == ';')
641 p++;
642 /* get each parameter */
643 while (*p != '\0' && *p != ',') {
644 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
645 if (!strcmp(parameter, "port")) {
646 if (*p == '=') {
647 p++;
648 rtsp_parse_range(&th->port_min, &th->port_max, &p);
649 }
650 } else if (!strcmp(parameter, "client_port")) {
651 if (*p == '=') {
652 p++;
115329f1 653 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
654 &th->client_port_max, &p);
655 }
656 } else if (!strcmp(parameter, "server_port")) {
657 if (*p == '=') {
658 p++;
115329f1 659 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
660 &th->server_port_max, &p);
661 }
662 } else if (!strcmp(parameter, "interleaved")) {
663 if (*p == '=') {
664 p++;
115329f1 665 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
666 &th->interleaved_max, &p);
667 }
668 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
669 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
670 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
671 } else if (!strcmp(parameter, "ttl")) {
672 if (*p == '=') {
673 p++;
674 th->ttl = strtol(p, (char **)&p, 10);
675 }
676 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
677 if (*p == '=') {
678 p++;
679 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 680 get_sockaddr(buf, &th->destination);
1617ad97 681 }
619298a8
JW
682 } else if (!strcmp(parameter, "source")) {
683 if (*p == '=') {
684 p++;
685 get_word_sep(buf, sizeof(buf), ";,", &p);
686 av_strlcpy(th->source, buf, sizeof(th->source));
687 }
1617ad97 688 }
619298a8 689
1617ad97
FB
690 while (*p != ';' && *p != '\0' && *p != ',')
691 p++;
692 if (*p == ';')
693 p++;
694 }
695 if (*p == ',')
696 p++;
697
698 reply->nb_transports++;
699 }
700}
701
29db7c3a
MS
702static void handle_rtp_info(RTSPState *rt, const char *url,
703 uint32_t seq, uint32_t rtptime)
704{
705 int i;
706 if (!rtptime || !url[0])
707 return;
708 if (rt->transport != RTSP_TRANSPORT_RTP)
709 return;
710 for (i = 0; i < rt->nb_rtsp_streams; i++) {
711 RTSPStream *rtsp_st = rt->rtsp_streams[i];
712 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
713 if (!rtpctx)
714 continue;
715 if (!strcmp(rtsp_st->control_url, url)) {
716 rtpctx->base_timestamp = rtptime;
717 break;
718 }
719 }
720}
721
722static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
723{
724 int read = 0;
725 char key[20], value[1024], url[1024] = "";
726 uint32_t seq = 0, rtptime = 0;
727
728 for (;;) {
729 p += strspn(p, SPACE_CHARS);
730 if (!*p)
731 break;
732 get_word_sep(key, sizeof(key), "=", &p);
733 if (*p != '=')
734 break;
735 p++;
736 get_word_sep(value, sizeof(value), ";, ", &p);
737 read++;
738 if (!strcmp(key, "url"))
739 av_strlcpy(url, value, sizeof(url));
740 else if (!strcmp(key, "seq"))
741 seq = strtol(value, NULL, 10);
742 else if (!strcmp(key, "rtptime"))
743 rtptime = strtol(value, NULL, 10);
744 if (*p == ',') {
745 handle_rtp_info(rt, url, seq, rtptime);
746 url[0] = '\0';
747 seq = rtptime = 0;
748 read = 0;
749 }
750 if (*p)
751 p++;
752 }
753 if (read > 0)
754 handle_rtp_info(rt, url, seq, rtptime);
755}
756
2626308a 757void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 758 RTSPState *rt, const char *method)
1617ad97
FB
759{
760 const char *p;
761
762 /* NOTE: we do case independent match for broken servers */
763 p = buf;
f7d78f36 764 if (av_stristart(p, "Session:", &p)) {
30e79845 765 int t;
1617ad97 766 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
767 if (av_stristart(p, ";timeout=", &p) &&
768 (t = strtol(p, NULL, 10)) > 0) {
769 reply->timeout = t;
770 }
f7d78f36 771 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 772 reply->content_length = strtol(p, NULL, 10);
f7d78f36 773 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 774 rtsp_parse_transport(reply, p);
f7d78f36 775 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 776 reply->seq = strtol(p, NULL, 10);
f7d78f36 777 } else if (av_stristart(p, "Range:", &p)) {
31693e00 778 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 779 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 780 p += strspn(p, SPACE_CHARS);
30aa6aed 781 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 782 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 783 p += strspn(p, SPACE_CHARS);
7a86bafa 784 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
785 } else if (av_stristart(p, "Notice:", &p) ||
786 av_stristart(p, "X-Notice:", &p)) {
787 reply->notice = strtol(p, NULL, 10);
d243ba30 788 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 789 p += strspn(p, SPACE_CHARS);
d243ba30 790 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 791 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 792 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
793 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
794 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 795 p += strspn(p, SPACE_CHARS);
acc9ed14 796 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 797 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 798 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
799 if (method && !strcmp(method, "DESCRIBE"))
800 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
801 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
802 p += strspn(p, SPACE_CHARS);
803 if (method && !strcmp(method, "PLAY"))
804 rtsp_parse_rtp_info(rt, p);
1617ad97
FB
805 }
806}
807
b7b8fc34 808/* skip a RTP/TCP interleaved packet */
ec55edba 809void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
810{
811 RTSPState *rt = s->priv_data;
812 int ret, len, len1;
813 uint8_t buf[1024];
814
0e848977 815 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
816 if (ret != 3)
817 return;
80fb8234 818 len = AV_RB16(buf + 1);
67c9cd69
BC
819
820 dprintf(s, "skipping RTP packet len=%d\n", len);
821
b7b8fc34
FB
822 /* skip payload */
823 while (len > 0) {
824 len1 = len;
825 if (len1 > sizeof(buf))
826 len1 = sizeof(buf);
0e848977 827 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
828 if (ret != len1)
829 return;
830 len -= len1;
831 }
832}
1617ad97 833
3307e6ea 834int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 835 unsigned char **content_ptr,
3df54c6b 836 int return_on_interleaved_data, const char *method)
1617ad97
FB
837{
838 RTSPState *rt = s->priv_data;
839 char buf[4096], buf1[1024], *q;
840 unsigned char ch;
841 const char *p;
7e726132 842 int ret, content_length, line_count = 0;
1617ad97
FB
843 unsigned char *content = NULL;
844
d541a7d2 845 memset(reply, 0, sizeof(*reply));
1617ad97 846
1617ad97 847 /* parse reply (XXX: use buffers) */
1617ad97 848 rt->last_reply[0] = '\0';
c8965800 849 for (;;) {
1617ad97 850 q = buf;
c8965800 851 for (;;) {
0e848977 852 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 853#ifdef DEBUG_RTP_TCP
67c9cd69 854 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
855#endif
856 if (ret != 1)
2401660d 857 return AVERROR_EOF;
1617ad97
FB
858 if (ch == '\n')
859 break;
b7b8fc34
FB
860 if (ch == '$') {
861 /* XXX: only parse it if first char on line ? */
7e726132
RB
862 if (return_on_interleaved_data) {
863 return 1;
864 } else
ec55edba 865 ff_rtsp_skip_packet(s);
b7b8fc34 866 } else if (ch != '\r') {
1617ad97
FB
867 if ((q - buf) < sizeof(buf) - 1)
868 *q++ = ch;
869 }
870 }
871 *q = '\0';
67c9cd69
BC
872
873 dprintf(s, "line='%s'\n", buf);
874
1617ad97
FB
875 /* test if last line */
876 if (buf[0] == '\0')
877 break;
878 p = buf;
879 if (line_count == 0) {
880 /* get reply code */
881 get_word(buf1, sizeof(buf1), &p);
882 get_word(buf1, sizeof(buf1), &p);
883 reply->status_code = atoi(buf1);
d93fdcbf 884 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 885 } else {
77223c53 886 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
887 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
888 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
889 }
890 line_count++;
891 }
115329f1 892
1617ad97 893 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 894 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 895
1617ad97
FB
896 content_length = reply->content_length;
897 if (content_length > 0) {
898 /* leave some room for a trailing '\0' (useful for simple parsing) */
899 content = av_malloc(content_length + 1);
0e848977 900 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
901 content[content_length] = '\0';
902 }
903 if (content_ptr)
904 *content_ptr = content;
e2e2e7dd
AB
905 else
906 av_free(content);
7e726132 907
7ed8211b
LB
908 if (rt->seq != reply->seq) {
909 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
910 rt->seq, reply->seq);
911 }
912
fccb1770
RB
913 /* EOS */
914 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
915 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 916 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 917 rt->state = RTSP_STATE_IDLE;
c8965800 918 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 919 return AVERROR(EIO); /* data or server error */
c8965800 920 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
921 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
922 return AVERROR(EPERM);
923
7e726132 924 return 0;
1617ad97
FB
925}
926
57c4d01e
DEP
927/**
928 * Send a command to the RTSP server without waiting for the reply.
929 *
930 * @param s RTSP (de)muxer context
931 * @param method the method for the request
932 * @param url the target url for the request
933 * @param headers extra header lines to include in the request
934 * @param send_content if non-null, the data to send as request body content
935 * @param send_content_length the length of the send_content data, or 0 if
936 * send_content is null
937 *
938 * @return zero if success, nonzero otherwise
939 */
940static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
941 const char *method, const char *url,
942 const char *headers,
943 const unsigned char *send_content,
944 int send_content_length)
29b9f58b
RB
945{
946 RTSPState *rt = s->priv_data;
f5d33f52
JA
947 char buf[4096], *out_buf;
948 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 949
f5d33f52
JA
950 /* Add in RTSP headers */
951 out_buf = buf;
29b9f58b 952 rt->seq++;
b17d11c6
MS
953 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
954 if (headers)
955 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 956 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
957 if (rt->session_id[0] != '\0' && (!headers ||
958 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 959 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 960 }
aa8bf2fb
MS
961 if (rt->auth[0]) {
962 char *str = ff_http_auth_create_response(&rt->auth_state,
963 rt->auth, url, method);
964 if (str)
965 av_strlcat(buf, str, sizeof(buf));
966 av_free(str);
967 }
dfd017bf
MS
968 if (send_content_length > 0 && send_content)
969 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 970 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 971
f5d33f52
JA
972 /* base64 encode rtsp if tunneling */
973 if (rt->control_transport == RTSP_MODE_TUNNEL) {
974 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
975 out_buf = base64buf;
976 }
977
67c9cd69
BC
978 dprintf(s, "Sending:\n%s--\n", buf);
979
f5d33f52
JA
980 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
981 if (send_content_length > 0 && send_content) {
982 if (rt->control_transport == RTSP_MODE_TUNNEL) {
983 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
984 "with content data not supported\n");
985 return AVERROR_PATCHWELCOME;
986 }
b8c2c41d 987 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 988 }
30e79845 989 rt->last_cmd_time = av_gettime();
d0382374
JA
990
991 return 0;
30e79845
RB
992}
993
d0382374 994int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 995 const char *url, const char *headers)
dfd017bf 996{
d0382374 997 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
998}
999
d0382374 1000int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1001 const char *headers, RTSPMessageHeader *reply,
1002 unsigned char **content_ptr)
30e79845 1003{
d0382374 1004 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1005 content_ptr, NULL, 0);
29b9f58b
RB
1006}
1007
d0382374 1008int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1009 const char *method, const char *url,
1010 const char *header,
1011 RTSPMessageHeader *reply,
1012 unsigned char **content_ptr,
1013 const unsigned char *send_content,
1014 int send_content_length)
dfd017bf 1015{
30af0779
MS
1016 RTSPState *rt = s->priv_data;
1017 HTTPAuthType cur_auth_type;
d0382374 1018 int ret;
30af0779
MS
1019
1020retry:
1021 cur_auth_type = rt->auth_state.auth_type;
d0382374 1022 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1023 send_content,
1024 send_content_length)))
d0382374 1025 return ret;
dfd017bf 1026
3df54c6b 1027 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1028 return ret;
30af0779
MS
1029
1030 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1031 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1032 goto retry;
d0382374 1033
bf55cf19 1034 if (reply->status_code > 400){
d93fdcbf 1035 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1036 method,
d93fdcbf
LB
1037 reply->status_code,
1038 reply->reason);
bf55cf19
LB
1039 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1040 }
1041
d0382374 1042 return 0;
dfd017bf
MS
1043}
1044
53620bba 1045/**
32e543f8 1046 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 1047 */
fef5649a 1048int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1049 int lower_transport, const char *real_challenge)
1617ad97
FB
1050{
1051 RTSPState *rt = s->priv_data;
f830c9a4 1052 int rtx, j, i, err, interleave = 0;
1617ad97 1053 RTSPStream *rtsp_st;
a9e534d5 1054 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1055 char cmd[2048];
e9dea59f
RB
1056 const char *trans_pref;
1057
119b4668 1058 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1059 trans_pref = "x-pn-tng";
1060 else
1061 trans_pref = "RTP/AVP";
115329f1 1062
30e79845
RB
1063 /* default timeout: 1 minute */
1064 rt->timeout = 60;
1065
1617ad97
FB
1066 /* for each stream, make the setup request */
1067 /* XXX: we assume the same server is used for the control of each
c8965800 1068 * RTSP stream */
d1ccf0e0 1069
c8965800 1070 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1071 char transport[2048];
1072
f830c9a4
RB
1073 /**
1074 * WMS serves all UDP data over a single connection, the RTX, which
1075 * isn't necessarily the first in the SDP but has to be the first
1076 * to be set up, else the second/third SETUP will fail with a 461.
1077 */
1078 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1079 rt->server_type == RTSP_SERVER_WMS) {
1080 if (i == 0) {
1081 /* rtx first */
1082 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1083 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1084 if (len >= 4 &&
c8965800
RB
1085 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1086 "/rtx"))
f830c9a4
RB
1087 break;
1088 }
1089 if (rtx == rt->nb_rtsp_streams)
1090 return -1; /* no RTX found */
1091 rtsp_st = rt->rtsp_streams[rtx];
1092 } else
1093 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1094 } else
2fea9650 1095 rtsp_st = rt->rtsp_streams[i];
1617ad97 1096
1617ad97 1097 /* RTP/UDP */
90abbdba 1098 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1099 char buf[256];
85fb7b34 1100
f830c9a4
RB
1101 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1102 port = reply->transports[0].client_port_min;
1103 goto have_port;
1104 }
1105
85fb7b34 1106 /* first try in specified port range */
d1ccf0e0 1107 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1108 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1109 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1110 "?localport=%d", j);
c8965800
RB
1111 /* we will use two ports per rtp stream (rtp and rtcp) */
1112 j += 2;
1113 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1114 goto rtp_opened;
1115 }
1617ad97 1116 }
85fb7b34 1117
c8965800
RB
1118#if 0
1119 /* then try on any port */
1120 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1121 err = AVERROR_INVALIDDATA;
1122 goto fail;
1123 }
a3b058b7
MS
1124#else
1125 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1126 err = AVERROR(EIO);
1127 goto fail;
c8965800 1128#endif
85fb7b34
FB
1129
1130 rtp_opened:
67f34aaa 1131 port = rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1132 have_port:
0ad306bc 1133 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1134 "%s/UDP;", trans_pref);
1135 if (rt->server_type != RTSP_SERVER_REAL)
1136 av_strlcat(transport, "unicast;", sizeof(transport));
1137 av_strlcatf(transport, sizeof(transport),
1138 "client_port=%d", port);
f830c9a4
RB
1139 if (rt->transport == RTSP_TRANSPORT_RTP &&
1140 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1141 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1142 }
1143
1144 /* RTP/TCP */
90abbdba 1145 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1146 /** For WMS streams, the application streams are only used for
1147 * UDP. When trying to set it up for TCP streams, the server
1148 * will return an error. Therefore, we skip those streams. */
1149 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1150 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1151 AVMEDIA_TYPE_DATA)
090438cc 1152 continue;
0ad306bc 1153 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1154 "%s/TCP;", trans_pref);
1155 if (rt->server_type == RTSP_SERVER_WMS)
1156 av_strlcat(transport, "unicast;", sizeof(transport));
1157 av_strlcatf(transport, sizeof(transport),
1158 "interleaved=%d-%d",
1159 interleave, interleave + 1);
1160 interleave += 2;
1617ad97
FB
1161 }
1162
90abbdba 1163 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1164 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1165 "%s/UDP;multicast", trans_pref);
1617ad97 1166 }
69adcc4f
MS
1167 if (s->oformat) {
1168 av_strlcat(transport, ";mode=receive", sizeof(transport));
1169 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1170 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1171 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1172 snprintf(cmd, sizeof(cmd),
b6892136 1173 "Transport: %s\r\n",
b17d11c6 1174 transport);
44b70ce5 1175 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1176 char real_res[41], real_csum[9];
1177 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1178 real_challenge);
1179 av_strlcatf(cmd, sizeof(cmd),
1180 "If-Match: %s\r\n"
1181 "RealChallenge2: %s, sd=%s\r\n",
1182 rt->session_id, real_res, real_csum);
1183 }
b17d11c6 1184 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1185 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1186 err = 1;
1187 goto fail;
7e6ca34f
RB
1188 } else if (reply->status_code != RTSP_STATUS_OK ||
1189 reply->nb_transports != 1) {
1617ad97
FB
1190 err = AVERROR_INVALIDDATA;
1191 goto fail;
1192 }
1193
1194 /* XXX: same protocol for all streams is required */
1195 if (i > 0) {
119b4668
RB
1196 if (reply->transports[0].lower_transport != rt->lower_transport ||
1197 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1198 err = AVERROR_INVALIDDATA;
1199 goto fail;
1200 }
1201 } else {
90abbdba 1202 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1203 rt->transport = reply->transports[0].transport;
1617ad97
FB
1204 }
1205
8c579c1c
MS
1206 /* Fail if the server responded with another lower transport mode
1207 * than what we requested. */
1208 if (reply->transports[0].lower_transport != lower_transport) {
1209 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1210 err = AVERROR_INVALIDDATA;
1211 goto fail;
1617ad97
FB
1212 }
1213
90abbdba
RB
1214 switch(reply->transports[0].lower_transport) {
1215 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1216 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1217 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1218 break;
115329f1 1219
c8965800 1220 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1221 char url[1024], options[30] = "";
c8965800 1222
a92c30d7
MS
1223 if (rt->filter_source)
1224 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1225 /* Use source address if specified */
1226 if (reply->transports[0].source[0]) {
1227 ff_url_join(url, sizeof(url), "rtp", NULL,
1228 reply->transports[0].source,
a92c30d7 1229 reply->transports[0].server_port_min, options);
619298a8 1230 } else {
7bac991f 1231 ff_url_join(url, sizeof(url), "rtp", NULL, host,
a92c30d7 1232 reply->transports[0].server_port_min, options);
619298a8 1233 }
c8965800
RB
1234 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1235 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1236 err = AVERROR_INVALIDDATA;
1237 goto fail;
1617ad97 1238 }
9c8fa20d
MS
1239 /* Try to initialize the connection state in a
1240 * potential NAT router by sending dummy packets.
1241 * RTP/RTCP dummy packets are used for RDT, too.
1242 */
44b70ce5
MS
1243 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1244 CONFIG_RTPDEC)
9c8fa20d 1245 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1246 break;
c8965800
RB
1247 }
1248 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1249 char url[1024], namebuf[50];
1250 struct sockaddr_storage addr;
c8965800
RB
1251 int port, ttl;
1252
7934b15d
MS
1253 if (reply->transports[0].destination.ss_family) {
1254 addr = reply->transports[0].destination;
c8965800
RB
1255 port = reply->transports[0].port_min;
1256 ttl = reply->transports[0].ttl;
1257 } else {
7934b15d 1258 addr = rtsp_st->sdp_ip;
c8965800
RB
1259 port = rtsp_st->sdp_port;
1260 ttl = rtsp_st->sdp_ttl;
1261 }
7934b15d
MS
1262 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1263 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1264 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1265 port, "?ttl=%d", ttl);
c8965800
RB
1266 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1267 err = AVERROR_INVALIDDATA;
1268 goto fail;
1617ad97
FB
1269 }
1270 break;
1271 }
c8965800 1272 }
d1ccf0e0 1273
ee0cb67f 1274 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1275 goto fail;
1617ad97
FB
1276 }
1277
30e79845
RB
1278 if (reply->timeout > 0)
1279 rt->timeout = reply->timeout;
1280
2e889ae4 1281 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1282 rt->need_subscription = 1;
1283
53620bba
RB
1284 return 0;
1285
1286fail:
aeb2de1c 1287 ff_rtsp_undo_setup(s);
53620bba
RB
1288 return err;
1289}
1290
b8c2c41d
JA
1291void ff_rtsp_close_connections(AVFormatContext *s)
1292{
1293 RTSPState *rt = s->priv_data;
1294 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1295 url_close(rt->rtsp_hd);
6217b645 1296 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1297}
1298
3307e6ea 1299int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1300{
1301 RTSPState *rt = s->priv_data;
921da217
LB
1302 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1303 char *option_list, *option, *filename;
03f8fc08 1304 int port, err, tcp_fd;
354b7573 1305 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1306 int lower_transport_mask = 0;
2762a7a2 1307 char real_challenge[64] = "";
03f8fc08
MS
1308 struct sockaddr_storage peer;
1309 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1310
1311 if (!ff_network_init())
1312 return AVERROR(EIO);
c8965800 1313redirect:
f5d33f52 1314 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1315 /* extract hostname and port */
f3bfe388 1316 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1317 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1318 if (*auth) {
aa8bf2fb 1319 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1320 }
53620bba
RB
1321 if (port < 0)
1322 port = RTSP_DEFAULT_PORT;
1323
1324 /* search for options */
602eb779 1325 option_list = strrchr(path, '?');
53620bba 1326 if (option_list) {
2a21adf9
MS
1327 /* Strip out the RTSP specific options, write out the rest of
1328 * the options back into the same string. */
1329 filename = option_list;
c8965800 1330 while (option_list) {
53620bba 1331 /* move the option pointer */
921da217 1332 option = ++option_list;
53620bba
RB
1333 option_list = strchr(option_list, '&');
1334 if (option_list)
921da217
LB
1335 *option_list = 0;
1336
53620bba 1337 /* handle the options */
c8965800 1338 if (!strcmp(option, "udp")) {
7a033e08 1339 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1340 } else if (!strcmp(option, "multicast")) {
7a033e08 1341 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1342 } else if (!strcmp(option, "tcp")) {
7a033e08 1343 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1344 } else if(!strcmp(option, "http")) {
1345 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1346 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7
MS
1347 } else if (!strcmp(option, "filter_src")) {
1348 rt->filter_source = 1;
c8965800 1349 } else {
2a21adf9
MS
1350 /* Write options back into the buffer, using memmove instead
1351 * of strcpy since the strings may overlap. */
1352 int len = strlen(option);
1353 memmove(++filename, option, len);
1354 filename += len;
921da217
LB
1355 if (option_list) *filename = '&';
1356 }
53620bba 1357 }
921da217 1358 *filename = 0;
53620bba
RB
1359 }
1360
90abbdba 1361 if (!lower_transport_mask)
2a1d51c5 1362 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1363
3e24c770 1364 if (s->oformat) {
b7dc88fc
MS
1365 /* Only UDP or TCP - UDP multicast isn't supported. */
1366 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1367 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1368 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1369 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1370 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1371 err = AVERROR(EINVAL);
1372 goto fail;
1373 }
1374 }
1375
4bc5cc23
MS
1376 /* Construct the URI used in request; this is similar to s->filename,
1377 * but with authentication credentials removed and RTSP specific options
1378 * stripped out. */
1379 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1380 host, port, "%s", path);
1381
f5d33f52
JA
1382 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1383 /* set up initial handshake for tunneling */
1384 char httpname[1024];
1385 char sessioncookie[17];
1386 char headers[1024];
1387
10ed37b5 1388 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1389 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1390 av_get_random_seed(), av_get_random_seed());
1391
1392 /* GET requests */
9290f15d 1393 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1394 err = AVERROR(EIO);
1395 goto fail;
1396 }
1397
1398 /* generate GET headers */
1399 snprintf(headers, sizeof(headers),
1400 "x-sessioncookie: %s\r\n"
1401 "Accept: application/x-rtsp-tunnelled\r\n"
1402 "Pragma: no-cache\r\n"
1403 "Cache-Control: no-cache\r\n",
1404 sessioncookie);
00e4a1f4 1405 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1406
1407 /* complete the connection */
9290f15d 1408 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1409 err = AVERROR(EIO);
1410 goto fail;
1411 }
1412
1413 /* POST requests */
9290f15d 1414 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1415 err = AVERROR(EIO);
1416 goto fail;
1417 }
1418
1419 /* generate POST headers */
1420 snprintf(headers, sizeof(headers),
1421 "x-sessioncookie: %s\r\n"
1422 "Content-Type: application/x-rtsp-tunnelled\r\n"
1423 "Pragma: no-cache\r\n"
1424 "Cache-Control: no-cache\r\n"
1425 "Content-Length: 32767\r\n"
1426 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1427 sessioncookie);
00e4a1f4
JA
1428 ff_http_set_headers(rt->rtsp_hd_out, headers);
1429 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1430
a8ead332
MS
1431 /* Initialize the authentication state for the POST session. The HTTP
1432 * protocol implementation doesn't properly handle multi-pass
1433 * authentication for POST requests, since it would require one of
1434 * the following:
1435 * - implementing Expect: 100-continue, which many HTTP servers
1436 * don't support anyway, even less the RTSP servers that do HTTP
1437 * tunneling
1438 * - sending the whole POST data until getting a 401 reply specifying
1439 * what authentication method to use, then resending all that data
1440 * - waiting for potential 401 replies directly after sending the
1441 * POST header (waiting for some unspecified time)
1442 * Therefore, we copy the full auth state, which works for both basic
1443 * and digest. (For digest, we would have to synchronize the nonce
1444 * count variable between the two sessions, if we'd do more requests
1445 * with the original session, though.)
1446 */
1447 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1448
9290f15d
MS
1449 /* complete the connection */
1450 if (url_connect(rt->rtsp_hd_out)) {
1451 err = AVERROR(EIO);
1452 goto fail;
1453 }
f5d33f52 1454 } else {
48e77473 1455 /* open the tcp connection */
41874d0a 1456 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1457 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1458 err = AVERROR(EIO);
1459 goto fail;
1460 }
00e4a1f4 1461 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1462 }
53620bba
RB
1463 rt->seq = 0;
1464
00e4a1f4 1465 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1466 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1467 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1468 NULL, 0, NI_NUMERICHOST);
1469 }
1470
c8965800
RB
1471 /* request options supported by the server; this also detects server
1472 * type */
1cf151e9 1473 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1474 cmd[0] = 0;
2e889ae4 1475 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1476 av_strlcat(cmd,
1477 /**
1478 * The following entries are required for proper
1479 * streaming from a Realmedia server. They are
1480 * interdependent in some way although we currently
1481 * don't quite understand how. Values were copied
1482 * from mplayer SVN r23589.
1483 * @param CompanyID is a 16-byte ID in base64
1484 * @param ClientChallenge is a 16-byte ID in hex
1485 */
1486 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1487 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1488 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1489 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1490 sizeof(cmd));
b17d11c6 1491 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1492 if (reply->status_code != RTSP_STATUS_OK) {
1493 err = AVERROR_INVALIDDATA;
1494 goto fail;
1495 }
1496
1497 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1498 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1499 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1500 continue;
7a86bafa
RB
1501 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1502 rt->server_type = RTSP_SERVER_WMS;
c8965800 1503 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1504 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1505 break;
1506 }
1507
44b70ce5 1508 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1509 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1510 else if (CONFIG_RTSP_MUXER)
c2688f3a 1511 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1512 if (err)
53620bba 1513 goto fail;
53620bba 1514
8a8754d8 1515 do {
c8965800
RB
1516 int lower_transport = ff_log2_tab[lower_transport_mask &
1517 ~(lower_transport_mask - 1)];
8a8754d8 1518
fef5649a 1519 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1520 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1521 real_challenge : NULL);
8a8754d8 1522 if (err < 0)
7e6ca34f 1523 goto fail;
90abbdba
RB
1524 lower_transport_mask &= ~(1 << lower_transport);
1525 if (lower_transport_mask == 0 && err == 1) {
adef229e 1526 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1527 goto fail;
1528 }
1529 } while (err);
53620bba 1530
2762a7a2
MS
1531 rt->lower_transport_mask = lower_transport_mask;
1532 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1533 rt->state = RTSP_STATE_IDLE;
c8965800 1534 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1535 return 0;
1536 fail:
3307e6ea 1537 ff_rtsp_close_streams(s);
b8c2c41d 1538 ff_rtsp_close_connections(s);
35cfd646 1539 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1540 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1541 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1542 reply->status_code,
1543 s->filename);
1544 goto redirect;
1545 }
57b5555c 1546 ff_network_close();
1617ad97
FB
1547 return err;
1548}
2e802e38 1549#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1550
44b70ce5 1551#if CONFIG_RTPDEC
0e59034e 1552static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1553 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1554{
1555 RTSPState *rt = s->priv_data;
1556 RTSPStream *rtsp_st;
1557 fd_set rfds;
a1ba71aa 1558 int fd, fd_rtcp, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1559 struct timeval tv;
1560
c8965800 1561 for (;;) {
0e59034e
RB
1562 if (url_interrupt_cb())
1563 return AVERROR(EINTR);
321259c1
MS
1564 if (wait_end && wait_end - av_gettime() < 0)
1565 return AVERROR(EAGAIN);
0e59034e
RB
1566 FD_ZERO(&rfds);
1567 if (rt->rtsp_hd) {
1568 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1569 FD_SET(tcp_fd, &rfds);
1570 } else {
1571 fd_max = 0;
1572 tcp_fd = -1;
1573 }
c8965800 1574 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1575 rtsp_st = rt->rtsp_streams[i];
1576 if (rtsp_st->rtp_handle) {
0e59034e 1577 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1578 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1579 if (FFMAX(fd, fd_rtcp) > fd_max)
1580 fd_max = FFMAX(fd, fd_rtcp);
0e59034e 1581 FD_SET(fd, &rfds);
a1ba71aa 1582 FD_SET(fd_rtcp, &rfds);
0e59034e
RB
1583 }
1584 }
1585 tv.tv_sec = 0;
9cba6f5f 1586 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1587 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1588 if (n > 0) {
9cba6f5f 1589 timeout_cnt = 0;
c8965800 1590 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1591 rtsp_st = rt->rtsp_streams[i];
1592 if (rtsp_st->rtp_handle) {
1593 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1594 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1595 if (FD_ISSET(fd_rtcp, &rfds) || FD_ISSET(fd, &rfds)) {
0e59034e
RB
1596 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1597 if (ret > 0) {
1598 *prtsp_st = rtsp_st;
1599 return ret;
1600 }
1601 }
1602 }
1603 }
5fe8021a 1604#if CONFIG_RTSP_DEMUXER
27000636 1605 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1606 RTSPMessageHeader reply;
1607
3df54c6b 1608 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1609 if (ret < 0)
1610 return ret;
0e59034e 1611 /* XXX: parse message */
c02fd3d2 1612 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1613 return 0;
1614 }
5fe8021a 1615#endif
9cba6f5f 1616 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1617 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1618 } else if (n < 0 && errno != EINTR)
1619 return AVERROR(errno);
0e59034e
RB
1620 }
1621}
1622
0526c6f7 1623int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1624{
1625 RTSPState *rt = s->priv_data;
1626 int ret, len;
321259c1
MS
1627 RTSPStream *rtsp_st, *first_queue_st = NULL;
1628 int64_t wait_end = 0;
0e59034e 1629
b20359f5
JA
1630 if (rt->nb_byes == rt->nb_rtsp_streams)
1631 return AVERROR_EOF;
1632
0e59034e
RB
1633 /* get next frames from the same RTP packet */
1634 if (rt->cur_transport_priv) {
c8965800 1635 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1636 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1637 } else
0e59034e
RB
1638 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1639 if (ret == 0) {
1640 rt->cur_transport_priv = NULL;
1641 return 0;
1642 } else if (ret == 1) {
1643 return 0;
c8965800 1644 } else
0e59034e 1645 rt->cur_transport_priv = NULL;
0e59034e
RB
1646 }
1647
321259c1
MS
1648 if (rt->transport == RTSP_TRANSPORT_RTP) {
1649 int i;
1650 int64_t first_queue_time = 0;
1651 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1652 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1653 int64_t queue_time;
1654 if (!rtpctx)
1655 continue;
1656 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1657 if (queue_time && (queue_time - first_queue_time < 0 ||
1658 !first_queue_time)) {
1659 first_queue_time = queue_time;
1660 first_queue_st = rt->rtsp_streams[i];
1661 }
1662 }
1663 if (first_queue_time)
1664 wait_end = first_queue_time + s->max_delay;
1665 }
1666
0e59034e
RB
1667 /* read next RTP packet */
1668 redo:
96a7c975
MS
1669 if (!rt->recvbuf) {
1670 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1671 if (!rt->recvbuf)
1672 return AVERROR(ENOMEM);
1673 }
1674
0e59034e
RB
1675 switch(rt->lower_transport) {
1676 default:
5fe8021a 1677#if CONFIG_RTSP_DEMUXER
0e59034e 1678 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1679 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1680 break;
5fe8021a 1681#endif
0e59034e
RB
1682 case RTSP_LOWER_TRANSPORT_UDP:
1683 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1684 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
0e59034e
RB
1685 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1686 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1687 break;
1688 }
321259c1
MS
1689 if (len == AVERROR(EAGAIN) && first_queue_st &&
1690 rt->transport == RTSP_TRANSPORT_RTP) {
1691 rtsp_st = first_queue_st;
1692 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1693 goto end;
1694 }
0e59034e
RB
1695 if (len < 0)
1696 return len;
1697 if (len == 0)
1698 return AVERROR_EOF;
c8965800 1699 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1700 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1701 } else {
ad4ad27f 1702 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1703 if (ret < 0) {
1704 /* Either bad packet, or a RTCP packet. Check if the
1705 * first_rtcp_ntp_time field was initialized. */
1706 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1707 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1708 /* first_rtcp_ntp_time has been initialized for this stream,
1709 * copy the same value to all other uninitialized streams,
1710 * in order to map their timestamp origin to the same ntp time
1711 * as this one. */
1712 int i;
3a1cdcc7
MS
1713 AVStream *st = NULL;
1714 if (rtsp_st->stream_index >= 0)
1715 st = s->streams[rtsp_st->stream_index];
2cab6b48 1716 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1717 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1718 AVStream *st2 = NULL;
1719 if (rt->rtsp_streams[i]->stream_index >= 0)
1720 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1721 if (rtpctx2 && st && st2 &&
1722 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1723 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1724 rtpctx2->rtcp_ts_offset = av_rescale_q(
1725 rtpctx->rtcp_ts_offset, st->time_base,
1726 st2->time_base);
1727 }
2cab6b48
MS
1728 }
1729 }
b20359f5
JA
1730 if (ret == -RTCP_BYE) {
1731 rt->nb_byes++;
1732
1733 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1734 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1735
1736 if (rt->nb_byes == rt->nb_rtsp_streams)
1737 return AVERROR_EOF;
1738 }
2cab6b48
MS
1739 }
1740 }
321259c1 1741end:
0e59034e
RB
1742 if (ret < 0)
1743 goto redo;
c8965800 1744 if (ret == 1)
0e59034e
RB
1745 /* more packets may follow, so we save the RTP context */
1746 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1747
1748 return ret;
1749}
44b70ce5 1750#endif /* CONFIG_RTPDEC */
0e59034e 1751
44b70ce5 1752#if CONFIG_SDP_DEMUXER
cb1fdc61 1753static int sdp_probe(AVProbeData *p1)
93ced3e8 1754{
0e1ceacd 1755 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1756
3fbd12d1 1757 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1758 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1759 if (p + sizeof("c=IN IP") - 1 < p_end &&
1760 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1761 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1762
c8965800 1763 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1764 if (++p >= p_end)
cb1fdc61 1765 break;
cb1fdc61
FB
1766 if (*p == '\r')
1767 p++;
1768 }
93ced3e8
FB
1769 return 0;
1770}
1771
c8965800 1772static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1773{
8b1ab7bf 1774 RTSPState *rt = s->priv_data;
93ced3e8
FB
1775 RTSPStream *rtsp_st;
1776 int size, i, err;
1777 char *content;
1778 char url[1024];
1779
57b5555c
MS
1780 if (!ff_network_init())
1781 return AVERROR(EIO);
1782
93ced3e8
FB
1783 /* read the whole sdp file */
1784 /* XXX: better loading */
1785 content = av_malloc(SDP_MAX_SIZE);
899681cd 1786 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1787 if (size <= 0) {
1788 av_free(content);
1789 return AVERROR_INVALIDDATA;
1790 }
1791 content[size] ='\0';
1792
0526c6f7 1793 ff_sdp_parse(s, content);
93ced3e8
FB
1794 av_free(content);
1795
1796 /* open each RTP stream */
c8965800 1797 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1798 char namebuf[50];
8b1ab7bf 1799 rtsp_st = rt->rtsp_streams[i];
115329f1 1800
3fbd12d1
MS
1801 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1802 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1803 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1804 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1805 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1806 rtsp_st->sdp_ttl);
dbf30963 1807 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1808 err = AVERROR_INVALIDDATA;
1809 goto fail;
1810 }
ee0cb67f 1811 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1812 goto fail;
93ced3e8
FB
1813 }
1814 return 0;
c8965800 1815fail:
3307e6ea 1816 ff_rtsp_close_streams(s);
57b5555c 1817 ff_network_close();
93ced3e8
FB
1818 return err;
1819}
1820
93ced3e8
FB
1821static int sdp_read_close(AVFormatContext *s)
1822{
3307e6ea 1823 ff_rtsp_close_streams(s);
57b5555c 1824 ff_network_close();
93ced3e8
FB
1825 return 0;
1826}
1827
c6610a21 1828AVInputFormat ff_sdp_demuxer = {
93ced3e8 1829 "sdp",
bde15e74 1830 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1831 sizeof(RTSPState),
1832 sdp_probe,
1833 sdp_read_header,
0526c6f7 1834 ff_rtsp_fetch_packet,
93ced3e8
FB
1835 sdp_read_close,
1836};
44b70ce5 1837#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1838
44b70ce5 1839#if CONFIG_RTP_DEMUXER
44594cc7
MS
1840static int rtp_probe(AVProbeData *p)
1841{
1842 if (av_strstart(p->filename, "rtp:", NULL))
1843 return AVPROBE_SCORE_MAX;
1844 return 0;
1845}
1846
1847static int rtp_read_header(AVFormatContext *s,
1848 AVFormatParameters *ap)
1849{
1850 uint8_t recvbuf[1500];
1851 char host[500], sdp[500];
1852 int ret, port;
1853 URLContext* in = NULL;
1854 int payload_type;
1855 AVCodecContext codec;
1856 struct sockaddr_storage addr;
1857 ByteIOContext pb;
1858 socklen_t addrlen = sizeof(addr);
1859
1860 if (!ff_network_init())
1861 return AVERROR(EIO);
1862
1863 ret = url_open(&in, s->filename, URL_RDONLY);
1864 if (ret)
1865 goto fail;
1866
1867 while (1) {
1868 ret = url_read(in, recvbuf, sizeof(recvbuf));
1869 if (ret == AVERROR(EAGAIN))
1870 continue;
1871 if (ret < 0)
1872 goto fail;
1873 if (ret < 12) {
1874 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1875 continue;
1876 }
1877
1878 if ((recvbuf[0] & 0xc0) != 0x80) {
1879 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1880 "received\n");
1881 continue;
1882 }
1883
1884 payload_type = recvbuf[1] & 0x7f;
1885 break;
1886 }
1887 getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
1888 url_close(in);
1889 in = NULL;
1890
1891 memset(&codec, 0, sizeof(codec));
1892 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1893 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1894 "without an SDP file describing it\n",
1895 payload_type);
1896 goto fail;
1897 }
1898 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1899 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1900 "properly you need an SDP file "
1901 "describing it\n");
1902 }
1903
1904 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1905 NULL, 0, s->filename);
1906
1907 snprintf(sdp, sizeof(sdp),
1908 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1909 addr.ss_family == AF_INET ? 4 : 6, host,
1910 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1911 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1912 port, payload_type);
1913 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1914
1915 init_put_byte(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
1916 s->pb = &pb;
1917
1918 /* sdp_read_header initializes this again */
1919 ff_network_close();
1920
1921 ret = sdp_read_header(s, ap);
1922 s->pb = NULL;
1923 return ret;
1924
1925fail:
1926 if (in)
1927 url_close(in);
1928 ff_network_close();
1929 return ret;
1930}
1931
c6610a21 1932AVInputFormat ff_rtp_demuxer = {
44594cc7
MS
1933 "rtp",
1934 NULL_IF_CONFIG_SMALL("RTP input format"),
1935 sizeof(RTSPState),
1936 rtp_probe,
1937 rtp_read_header,
0526c6f7 1938 ff_rtsp_fetch_packet,
44594cc7
MS
1939 sdp_read_close,
1940 .flags = AVFMT_NOFILE,
1941};
44b70ce5 1942#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1943