Remove last_samples[] and copy directly from planar_samples[].
[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);
86b6e387
MS
336 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
337 av_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
338 /* Even static payload types may need a custom depacketizer */
339 handler = ff_rtp_handler_find_by_id(
340 rtsp_st->sdp_payload_type, st->codec->codec_type);
341 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
342 }
343 }
1617ad97 344 /* put a default control url */
00eb13e0 345 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 346 sizeof(rtsp_st->control_url));
1617ad97
FB
347 break;
348 case 'a':
00eb13e0
AS
349 if (av_strstart(p, "control:", &p)) {
350 if (s->nb_streams == 0) {
351 if (!strncmp(p, "rtsp://", 7))
352 av_strlcpy(rt->control_uri, p,
353 sizeof(rt->control_uri));
354 } else {
0b6a7ff4
MS
355 char proto[32];
356 /* get the control url */
357 st = s->streams[s->nb_streams - 1];
358 rtsp_st = st->priv_data;
115329f1 359
0b6a7ff4
MS
360 /* XXX: may need to add full url resolution */
361 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
362 NULL, NULL, 0, p);
363 if (proto[0] == '\0') {
364 /* relative control URL */
365 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
366 av_strlcat(rtsp_st->control_url, "/",
367 sizeof(rtsp_st->control_url));
368 av_strlcat(rtsp_st->control_url, p,
369 sizeof(rtsp_st->control_url));
370 } else
371 av_strlcpy(rtsp_st->control_url, p,
372 sizeof(rtsp_st->control_url));
00eb13e0 373 }
83d14c85 374 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 375 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 376 get_word(buf1, sizeof(buf1), &p);
93ced3e8 377 payload_type = atoi(buf1);
83d14c85 378 st = s->streams[s->nb_streams - 1];
ff16f551 379 rtsp_st = st->priv_data;
86b6e387 380 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
381 } else if (av_strstart(p, "fmtp:", &p) ||
382 av_strstart(p, "framesize:", &p)) {
93ced3e8 383 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
384 // let dynamic protocol handlers have a stab at the line.
385 get_word(buf1, sizeof(buf1), &p);
386 payload_type = atoi(buf1);
c8965800
RB
387 for (i = 0; i < s->nb_streams; i++) {
388 st = s->streams[i];
d0deedcb 389 rtsp_st = st->priv_data;
c8965800
RB
390 if (rtsp_st->sdp_payload_type == payload_type &&
391 rtsp_st->dynamic_handler &&
392 rtsp_st->dynamic_handler->parse_sdp_a_line)
393 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
394 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 395 }
c8965800 396 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
397 int64_t start, end;
398
399 // this is so that seeking on a streamed file can work.
400 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
401 s->start_time = start;
402 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
403 s->duration = (end == AV_NOPTS_VALUE) ?
404 AV_NOPTS_VALUE : end - start;
119b4668
RB
405 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
406 if (atoi(p) == 1)
407 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
408 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
409 s->nb_streams > 0) {
410 st = s->streams[s->nb_streams - 1];
411 st->codec->sample_rate = atoi(p);
1a30d541
RB
412 } else {
413 if (rt->server_type == RTSP_SERVER_WMS)
414 ff_wms_parse_sdp_a_line(s, p);
415 if (s->nb_streams > 0) {
c4a3d032
RB
416 if (rt->server_type == RTSP_SERVER_REAL)
417 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
418
419 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
420 if (rtsp_st->dynamic_handler &&
421 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
422 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
423 s->nb_streams - 1,
c4a3d032 424 rtsp_st->dynamic_protocol_context, buf);
1a30d541 425 }
1617ad97
FB
426 }
427 break;
428 }
429}
430
0526c6f7 431int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
432{
433 const char *p;
434 int letter;
9211bcdd
RB
435 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
436 * contain long SDP lines containing complete ASF Headers (several
437 * kB) or arrays of MDPR (RM stream descriptor) headers plus
438 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
439 * buffer is large.
440 *
afcea58c
JA
441 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
442 * in rtpdec_xiph.c. */
373afbaf 443 char buf[16384], *q;
93ced3e8 444 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 445
93ced3e8 446 memset(s1, 0, sizeof(SDPParseState));
1617ad97 447 p = content;
c8965800 448 for (;;) {
30619e6e 449 p += strspn(p, SPACE_CHARS);
1617ad97
FB
450 letter = *p;
451 if (letter == '\0')
452 break;
453 p++;
454 if (*p != '=')
455 goto next_line;
456 p++;
457 /* get the content */
458 q = buf;
b6892136 459 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
460 if ((q - buf) < sizeof(buf) - 1)
461 *q++ = *p;
462 p++;
463 }
464 *q = '\0';
93ced3e8 465 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
466 next_line:
467 while (*p != '\n' && *p != '\0')
468 p++;
469 if (*p == '\n')
470 p++;
471 }
472 return 0;
473}
44b70ce5 474#endif /* CONFIG_RTPDEC */
1617ad97 475
1ced9da3 476/* close and free RTSP streams */
3307e6ea 477void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 478{
52aa4338 479 RTSPState *rt = s->priv_data;
1ced9da3
LA
480 int i;
481 RTSPStream *rtsp_st;
482
c8965800 483 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
484 rtsp_st = rt->rtsp_streams[i];
485 if (rtsp_st) {
486 if (rtsp_st->transport_priv) {
fd450a51
MS
487 if (s->oformat) {
488 AVFormatContext *rtpctx = rtsp_st->transport_priv;
489 av_write_trailer(rtpctx);
b7dc88fc
MS
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 {
685e76b5 495 url_fclose(rtpctx->pb);
b7dc88fc 496 }
f86f6656
MS
497 av_metadata_free(&rtpctx->streams[0]->metadata);
498 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
499 av_free(rtpctx->streams[0]);
500 av_free(rtpctx);
44b70ce5 501 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3 502 ff_rdt_parse_close(rtsp_st->transport_priv);
44b70ce5 503 else if (CONFIG_RTPDEC)
1ced9da3
LA
504 rtp_parse_close(rtsp_st->transport_priv);
505 }
506 if (rtsp_st->rtp_handle)
507 url_close(rtsp_st->rtp_handle);
508 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
509 rtsp_st->dynamic_handler->close(
510 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
511 }
512 }
513 av_free(rt->rtsp_streams);
514 if (rt->asf_ctx) {
515 av_close_input_stream (rt->asf_ctx);
516 rt->asf_ctx = NULL;
517 }
96a7c975 518 av_free(rt->recvbuf);
1ced9da3
LA
519}
520
c8965800 521static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
522{
523 RTSPState *rt = s->priv_data;
524 AVStream *st = NULL;
525
526 /* open the RTP context */
527 if (rtsp_st->stream_index >= 0)
528 st = s->streams[rtsp_st->stream_index];
529 if (!st)
530 s->ctx_flags |= AVFMTCTX_NOHEADER;
531
44b70ce5 532 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
533 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
534 rtsp_st->rtp_handle,
535 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 536 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 537 rtsp_st->rtp_handle = NULL;
44b70ce5 538 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
539 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
540 rtsp_st->dynamic_protocol_context,
541 rtsp_st->dynamic_handler);
44b70ce5 542 else if (CONFIG_RTPDEC)
1ced9da3 543 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
544 rtsp_st->sdp_payload_type,
545 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
546 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
547
548 if (!rtsp_st->transport_priv) {
549 return AVERROR(ENOMEM);
44b70ce5 550 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 551 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
552 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
553 rtsp_st->dynamic_protocol_context,
554 rtsp_st->dynamic_handler);
555 }
556 }
557
558 return 0;
559}
560
6f5a3d0a 561#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
562static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
563{
564 const char *p;
565 int v;
566
567 p = *pp;
30619e6e 568 p += strspn(p, SPACE_CHARS);
1617ad97
FB
569 v = strtol(p, (char **)&p, 10);
570 if (*p == '-') {
571 p++;
572 *min_ptr = v;
573 v = strtol(p, (char **)&p, 10);
574 *max_ptr = v;
575 } else {
576 *min_ptr = v;
577 *max_ptr = v;
578 }
579 *pp = p;
580}
581
582/* XXX: only one transport specification is parsed */
a9e534d5 583static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
584{
585 char transport_protocol[16];
586 char profile[16];
587 char lower_transport[16];
588 char parameter[16];
589 RTSPTransportField *th;
590 char buf[256];
115329f1 591
1617ad97 592 reply->nb_transports = 0;
115329f1 593
c8965800 594 for (;;) {
30619e6e 595 p += strspn(p, SPACE_CHARS);
1617ad97
FB
596 if (*p == '\0')
597 break;
598
599 th = &reply->transports[reply->nb_transports];
600
115329f1 601 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 602 "/", &p);
e1502118 603 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
604 get_word_sep(profile, sizeof(profile), "/;,", &p);
605 lower_transport[0] = '\0';
606 /* rtp/avp/<protocol> */
607 if (*p == '/') {
7ecc634e
LB
608 get_word_sep(lower_transport, sizeof(lower_transport),
609 ";,", &p);
119b4668
RB
610 }
611 th->transport = RTSP_TRANSPORT_RTP;
612 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
613 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 614 /* x-pn-tng/<protocol> */
e1502118
LB
615 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
616 profile[0] = '\0';
119b4668 617 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 618 }
b6892136 619 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 620 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 621 else
90abbdba 622 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 623
1617ad97
FB
624 if (*p == ';')
625 p++;
626 /* get each parameter */
627 while (*p != '\0' && *p != ',') {
628 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
629 if (!strcmp(parameter, "port")) {
630 if (*p == '=') {
631 p++;
632 rtsp_parse_range(&th->port_min, &th->port_max, &p);
633 }
634 } else if (!strcmp(parameter, "client_port")) {
635 if (*p == '=') {
636 p++;
115329f1 637 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
638 &th->client_port_max, &p);
639 }
640 } else if (!strcmp(parameter, "server_port")) {
641 if (*p == '=') {
642 p++;
115329f1 643 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
644 &th->server_port_max, &p);
645 }
646 } else if (!strcmp(parameter, "interleaved")) {
647 if (*p == '=') {
648 p++;
115329f1 649 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
650 &th->interleaved_max, &p);
651 }
652 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
653 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
654 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
655 } else if (!strcmp(parameter, "ttl")) {
656 if (*p == '=') {
657 p++;
658 th->ttl = strtol(p, (char **)&p, 10);
659 }
660 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
661 if (*p == '=') {
662 p++;
663 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 664 get_sockaddr(buf, &th->destination);
1617ad97 665 }
619298a8
JW
666 } else if (!strcmp(parameter, "source")) {
667 if (*p == '=') {
668 p++;
669 get_word_sep(buf, sizeof(buf), ";,", &p);
670 av_strlcpy(th->source, buf, sizeof(th->source));
671 }
1617ad97 672 }
619298a8 673
1617ad97
FB
674 while (*p != ';' && *p != '\0' && *p != ',')
675 p++;
676 if (*p == ';')
677 p++;
678 }
679 if (*p == ',')
680 p++;
681
682 reply->nb_transports++;
683 }
684}
685
2626308a
MS
686void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
687 HTTPAuthState *auth_state)
1617ad97
FB
688{
689 const char *p;
690
691 /* NOTE: we do case independent match for broken servers */
692 p = buf;
f7d78f36 693 if (av_stristart(p, "Session:", &p)) {
30e79845 694 int t;
1617ad97 695 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
696 if (av_stristart(p, ";timeout=", &p) &&
697 (t = strtol(p, NULL, 10)) > 0) {
698 reply->timeout = t;
699 }
f7d78f36 700 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 701 reply->content_length = strtol(p, NULL, 10);
f7d78f36 702 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 703 rtsp_parse_transport(reply, p);
f7d78f36 704 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 705 reply->seq = strtol(p, NULL, 10);
f7d78f36 706 } else if (av_stristart(p, "Range:", &p)) {
31693e00 707 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 708 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 709 p += strspn(p, SPACE_CHARS);
30aa6aed 710 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 711 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 712 p += strspn(p, SPACE_CHARS);
7a86bafa 713 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
714 } else if (av_stristart(p, "Notice:", &p) ||
715 av_stristart(p, "X-Notice:", &p)) {
716 reply->notice = strtol(p, NULL, 10);
d243ba30 717 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 718 p += strspn(p, SPACE_CHARS);
d243ba30 719 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a 720 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
30619e6e 721 p += strspn(p, SPACE_CHARS);
2626308a
MS
722 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
723 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
30619e6e 724 p += strspn(p, SPACE_CHARS);
2626308a 725 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
dd22cfb1
MS
726 } else if (av_stristart(p, "Content-Base:", &p)) {
727 p += strspn(p, SPACE_CHARS);
728 av_strlcpy(reply->content_base, p , sizeof(reply->content_base));
1617ad97
FB
729 }
730}
731
b7b8fc34 732/* skip a RTP/TCP interleaved packet */
ec55edba 733void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
734{
735 RTSPState *rt = s->priv_data;
736 int ret, len, len1;
737 uint8_t buf[1024];
738
0e848977 739 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
740 if (ret != 3)
741 return;
80fb8234 742 len = AV_RB16(buf + 1);
67c9cd69
BC
743
744 dprintf(s, "skipping RTP packet len=%d\n", len);
745
b7b8fc34
FB
746 /* skip payload */
747 while (len > 0) {
748 len1 = len;
749 if (len1 > sizeof(buf))
750 len1 = sizeof(buf);
0e848977 751 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
752 if (ret != len1)
753 return;
754 len -= len1;
755 }
756}
1617ad97 757
3307e6ea 758int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
759 unsigned char **content_ptr,
760 int return_on_interleaved_data)
1617ad97
FB
761{
762 RTSPState *rt = s->priv_data;
763 char buf[4096], buf1[1024], *q;
764 unsigned char ch;
765 const char *p;
7e726132 766 int ret, content_length, line_count = 0;
1617ad97
FB
767 unsigned char *content = NULL;
768
d541a7d2 769 memset(reply, 0, sizeof(*reply));
1617ad97 770
1617ad97 771 /* parse reply (XXX: use buffers) */
1617ad97 772 rt->last_reply[0] = '\0';
c8965800 773 for (;;) {
1617ad97 774 q = buf;
c8965800 775 for (;;) {
0e848977 776 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 777#ifdef DEBUG_RTP_TCP
67c9cd69 778 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
779#endif
780 if (ret != 1)
2401660d 781 return AVERROR_EOF;
1617ad97
FB
782 if (ch == '\n')
783 break;
b7b8fc34
FB
784 if (ch == '$') {
785 /* XXX: only parse it if first char on line ? */
7e726132
RB
786 if (return_on_interleaved_data) {
787 return 1;
788 } else
ec55edba 789 ff_rtsp_skip_packet(s);
b7b8fc34 790 } else if (ch != '\r') {
1617ad97
FB
791 if ((q - buf) < sizeof(buf) - 1)
792 *q++ = ch;
793 }
794 }
795 *q = '\0';
67c9cd69
BC
796
797 dprintf(s, "line='%s'\n", buf);
798
1617ad97
FB
799 /* test if last line */
800 if (buf[0] == '\0')
801 break;
802 p = buf;
803 if (line_count == 0) {
804 /* get reply code */
805 get_word(buf1, sizeof(buf1), &p);
806 get_word(buf1, sizeof(buf1), &p);
807 reply->status_code = atoi(buf1);
d93fdcbf 808 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 809 } else {
2626308a 810 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
811 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
812 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
813 }
814 line_count++;
815 }
115329f1 816
1617ad97 817 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 818 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 819
1617ad97
FB
820 content_length = reply->content_length;
821 if (content_length > 0) {
822 /* leave some room for a trailing '\0' (useful for simple parsing) */
823 content = av_malloc(content_length + 1);
0e848977 824 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
825 content[content_length] = '\0';
826 }
827 if (content_ptr)
828 *content_ptr = content;
e2e2e7dd
AB
829 else
830 av_free(content);
7e726132 831
7ed8211b
LB
832 if (rt->seq != reply->seq) {
833 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
834 rt->seq, reply->seq);
835 }
836
fccb1770
RB
837 /* EOS */
838 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
839 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 840 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 841 rt->state = RTSP_STATE_IDLE;
c8965800 842 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 843 return AVERROR(EIO); /* data or server error */
c8965800 844 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
845 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
846 return AVERROR(EPERM);
847
7e726132 848 return 0;
1617ad97
FB
849}
850
d0382374 851int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
852 const char *method, const char *url,
853 const char *headers,
854 const unsigned char *send_content,
855 int send_content_length)
29b9f58b
RB
856{
857 RTSPState *rt = s->priv_data;
f5d33f52
JA
858 char buf[4096], *out_buf;
859 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 860
f5d33f52
JA
861 /* Add in RTSP headers */
862 out_buf = buf;
29b9f58b 863 rt->seq++;
b17d11c6
MS
864 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
865 if (headers)
866 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 867 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
868 if (rt->session_id[0] != '\0' && (!headers ||
869 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 870 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 871 }
aa8bf2fb
MS
872 if (rt->auth[0]) {
873 char *str = ff_http_auth_create_response(&rt->auth_state,
874 rt->auth, url, method);
875 if (str)
876 av_strlcat(buf, str, sizeof(buf));
877 av_free(str);
878 }
dfd017bf
MS
879 if (send_content_length > 0 && send_content)
880 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 881 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 882
f5d33f52
JA
883 /* base64 encode rtsp if tunneling */
884 if (rt->control_transport == RTSP_MODE_TUNNEL) {
885 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
886 out_buf = base64buf;
887 }
888
67c9cd69
BC
889 dprintf(s, "Sending:\n%s--\n", buf);
890
f5d33f52
JA
891 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
892 if (send_content_length > 0 && send_content) {
893 if (rt->control_transport == RTSP_MODE_TUNNEL) {
894 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
895 "with content data not supported\n");
896 return AVERROR_PATCHWELCOME;
897 }
b8c2c41d 898 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 899 }
30e79845 900 rt->last_cmd_time = av_gettime();
d0382374
JA
901
902 return 0;
30e79845
RB
903}
904
d0382374 905int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 906 const char *url, const char *headers)
dfd017bf 907{
d0382374 908 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
909}
910
d0382374 911int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
912 const char *headers, RTSPMessageHeader *reply,
913 unsigned char **content_ptr)
30e79845 914{
d0382374 915 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 916 content_ptr, NULL, 0);
29b9f58b
RB
917}
918
d0382374 919int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
920 const char *method, const char *url,
921 const char *header,
922 RTSPMessageHeader *reply,
923 unsigned char **content_ptr,
924 const unsigned char *send_content,
925 int send_content_length)
dfd017bf 926{
30af0779
MS
927 RTSPState *rt = s->priv_data;
928 HTTPAuthType cur_auth_type;
d0382374 929 int ret;
30af0779
MS
930
931retry:
932 cur_auth_type = rt->auth_state.auth_type;
d0382374 933 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
934 send_content,
935 send_content_length)))
d0382374 936 return ret;
dfd017bf 937
d0382374
JA
938 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
939 return ret;
30af0779
MS
940
941 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
942 rt->auth_state.auth_type != HTTP_AUTH_NONE)
943 goto retry;
d0382374 944
bf55cf19 945 if (reply->status_code > 400){
d93fdcbf 946 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 947 method,
d93fdcbf
LB
948 reply->status_code,
949 reply->reason);
bf55cf19
LB
950 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
951 }
952
d0382374 953 return 0;
dfd017bf
MS
954}
955
53620bba 956/**
32e543f8 957 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 958 */
c8965800
RB
959static int make_setup_request(AVFormatContext *s, const char *host, int port,
960 int lower_transport, const char *real_challenge)
1617ad97
FB
961{
962 RTSPState *rt = s->priv_data;
f830c9a4 963 int rtx, j, i, err, interleave = 0;
1617ad97 964 RTSPStream *rtsp_st;
a9e534d5 965 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 966 char cmd[2048];
e9dea59f
RB
967 const char *trans_pref;
968
119b4668 969 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
970 trans_pref = "x-pn-tng";
971 else
972 trans_pref = "RTP/AVP";
115329f1 973
30e79845
RB
974 /* default timeout: 1 minute */
975 rt->timeout = 60;
976
1617ad97
FB
977 /* for each stream, make the setup request */
978 /* XXX: we assume the same server is used for the control of each
c8965800 979 * RTSP stream */
d1ccf0e0 980
c8965800 981 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
982 char transport[2048];
983
f830c9a4
RB
984 /**
985 * WMS serves all UDP data over a single connection, the RTX, which
986 * isn't necessarily the first in the SDP but has to be the first
987 * to be set up, else the second/third SETUP will fail with a 461.
988 */
989 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
990 rt->server_type == RTSP_SERVER_WMS) {
991 if (i == 0) {
992 /* rtx first */
993 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
994 int len = strlen(rt->rtsp_streams[rtx]->control_url);
995 if (len >= 4 &&
c8965800
RB
996 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
997 "/rtx"))
f830c9a4
RB
998 break;
999 }
1000 if (rtx == rt->nb_rtsp_streams)
1001 return -1; /* no RTX found */
1002 rtsp_st = rt->rtsp_streams[rtx];
1003 } else
1004 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1005 } else
2fea9650 1006 rtsp_st = rt->rtsp_streams[i];
1617ad97 1007
1617ad97 1008 /* RTP/UDP */
90abbdba 1009 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1010 char buf[256];
85fb7b34 1011
f830c9a4
RB
1012 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1013 port = reply->transports[0].client_port_min;
1014 goto have_port;
1015 }
1016
85fb7b34 1017 /* first try in specified port range */
d1ccf0e0 1018 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1019 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1020 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1021 "?localport=%d", j);
c8965800
RB
1022 /* we will use two ports per rtp stream (rtp and rtcp) */
1023 j += 2;
1024 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1025 goto rtp_opened;
1026 }
1617ad97 1027 }
85fb7b34 1028
c8965800
RB
1029#if 0
1030 /* then try on any port */
1031 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1032 err = AVERROR_INVALIDDATA;
1033 goto fail;
1034 }
1035#endif
85fb7b34
FB
1036
1037 rtp_opened:
67f34aaa 1038 port = rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1039 have_port:
0ad306bc 1040 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1041 "%s/UDP;", trans_pref);
1042 if (rt->server_type != RTSP_SERVER_REAL)
1043 av_strlcat(transport, "unicast;", sizeof(transport));
1044 av_strlcatf(transport, sizeof(transport),
1045 "client_port=%d", port);
f830c9a4
RB
1046 if (rt->transport == RTSP_TRANSPORT_RTP &&
1047 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1048 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1049 }
1050
1051 /* RTP/TCP */
90abbdba 1052 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1053 /** For WMS streams, the application streams are only used for
1054 * UDP. When trying to set it up for TCP streams, the server
1055 * will return an error. Therefore, we skip those streams. */
1056 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1057 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1058 AVMEDIA_TYPE_DATA)
090438cc 1059 continue;
0ad306bc 1060 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1061 "%s/TCP;", trans_pref);
1062 if (rt->server_type == RTSP_SERVER_WMS)
1063 av_strlcat(transport, "unicast;", sizeof(transport));
1064 av_strlcatf(transport, sizeof(transport),
1065 "interleaved=%d-%d",
1066 interleave, interleave + 1);
1067 interleave += 2;
1617ad97
FB
1068 }
1069
90abbdba 1070 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1071 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1072 "%s/UDP;multicast", trans_pref);
1617ad97 1073 }
69adcc4f
MS
1074 if (s->oformat) {
1075 av_strlcat(transport, ";mode=receive", sizeof(transport));
1076 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1077 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1078 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1079 snprintf(cmd, sizeof(cmd),
b6892136 1080 "Transport: %s\r\n",
b17d11c6 1081 transport);
44b70ce5 1082 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1083 char real_res[41], real_csum[9];
1084 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1085 real_challenge);
1086 av_strlcatf(cmd, sizeof(cmd),
1087 "If-Match: %s\r\n"
1088 "RealChallenge2: %s, sd=%s\r\n",
1089 rt->session_id, real_res, real_csum);
1090 }
b17d11c6 1091 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1092 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1093 err = 1;
1094 goto fail;
7e6ca34f
RB
1095 } else if (reply->status_code != RTSP_STATUS_OK ||
1096 reply->nb_transports != 1) {
1617ad97
FB
1097 err = AVERROR_INVALIDDATA;
1098 goto fail;
1099 }
1100
1101 /* XXX: same protocol for all streams is required */
1102 if (i > 0) {
119b4668
RB
1103 if (reply->transports[0].lower_transport != rt->lower_transport ||
1104 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1105 err = AVERROR_INVALIDDATA;
1106 goto fail;
1107 }
1108 } else {
90abbdba 1109 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1110 rt->transport = reply->transports[0].transport;
1617ad97
FB
1111 }
1112
2901cc9a 1113 /* close RTP connection if not chosen */
90abbdba
RB
1114 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1115 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1116 url_close(rtsp_st->rtp_handle);
1117 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1118 }
1119
90abbdba
RB
1120 switch(reply->transports[0].lower_transport) {
1121 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1122 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1123 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1124 break;
115329f1 1125
c8965800
RB
1126 case RTSP_LOWER_TRANSPORT_UDP: {
1127 char url[1024];
1128
619298a8
JW
1129 /* Use source address if specified */
1130 if (reply->transports[0].source[0]) {
1131 ff_url_join(url, sizeof(url), "rtp", NULL,
1132 reply->transports[0].source,
1133 reply->transports[0].server_port_min, NULL);
1134 } else {
7bac991f
RB
1135 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1136 reply->transports[0].server_port_min, NULL);
619298a8 1137 }
c8965800
RB
1138 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1139 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1140 err = AVERROR_INVALIDDATA;
1141 goto fail;
1617ad97 1142 }
9c8fa20d
MS
1143 /* Try to initialize the connection state in a
1144 * potential NAT router by sending dummy packets.
1145 * RTP/RTCP dummy packets are used for RDT, too.
1146 */
44b70ce5
MS
1147 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1148 CONFIG_RTPDEC)
9c8fa20d 1149 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1150 break;
c8965800
RB
1151 }
1152 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1153 char url[1024], namebuf[50];
1154 struct sockaddr_storage addr;
c8965800
RB
1155 int port, ttl;
1156
7934b15d
MS
1157 if (reply->transports[0].destination.ss_family) {
1158 addr = reply->transports[0].destination;
c8965800
RB
1159 port = reply->transports[0].port_min;
1160 ttl = reply->transports[0].ttl;
1161 } else {
7934b15d 1162 addr = rtsp_st->sdp_ip;
c8965800
RB
1163 port = rtsp_st->sdp_port;
1164 ttl = rtsp_st->sdp_ttl;
1165 }
7934b15d
MS
1166 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1167 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1168 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1169 port, "?ttl=%d", ttl);
c8965800
RB
1170 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1171 err = AVERROR_INVALIDDATA;
1172 goto fail;
1617ad97
FB
1173 }
1174 break;
1175 }
c8965800 1176 }
d1ccf0e0 1177
ee0cb67f 1178 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1179 goto fail;
1617ad97
FB
1180 }
1181
30e79845
RB
1182 if (reply->timeout > 0)
1183 rt->timeout = reply->timeout;
1184
2e889ae4 1185 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1186 rt->need_subscription = 1;
1187
53620bba
RB
1188 return 0;
1189
1190fail:
c8965800 1191 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1192 if (rt->rtsp_streams[i]->rtp_handle) {
1193 url_close(rt->rtsp_streams[i]->rtp_handle);
1194 rt->rtsp_streams[i]->rtp_handle = NULL;
1195 }
1196 }
53620bba
RB
1197 return err;
1198}
1199
b8c2c41d
JA
1200void ff_rtsp_close_connections(AVFormatContext *s)
1201{
1202 RTSPState *rt = s->priv_data;
1203 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1204 url_close(rt->rtsp_hd);
6217b645 1205 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1206}
1207
3307e6ea 1208int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1209{
1210 RTSPState *rt = s->priv_data;
921da217
LB
1211 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1212 char *option_list, *option, *filename;
03f8fc08 1213 int port, err, tcp_fd;
354b7573 1214 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1215 int lower_transport_mask = 0;
1cf151e9 1216 char real_challenge[64];
03f8fc08
MS
1217 struct sockaddr_storage peer;
1218 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1219
1220 if (!ff_network_init())
1221 return AVERROR(EIO);
c8965800 1222redirect:
f5d33f52 1223 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1224 /* extract hostname and port */
f3bfe388 1225 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1226 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1227 if (*auth) {
aa8bf2fb 1228 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1229 }
53620bba
RB
1230 if (port < 0)
1231 port = RTSP_DEFAULT_PORT;
1232
1233 /* search for options */
602eb779 1234 option_list = strrchr(path, '?');
53620bba 1235 if (option_list) {
2a21adf9
MS
1236 /* Strip out the RTSP specific options, write out the rest of
1237 * the options back into the same string. */
1238 filename = option_list;
c8965800 1239 while (option_list) {
53620bba 1240 /* move the option pointer */
921da217 1241 option = ++option_list;
53620bba
RB
1242 option_list = strchr(option_list, '&');
1243 if (option_list)
921da217
LB
1244 *option_list = 0;
1245
53620bba 1246 /* handle the options */
c8965800 1247 if (!strcmp(option, "udp")) {
7a033e08 1248 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1249 } else if (!strcmp(option, "multicast")) {
7a033e08 1250 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1251 } else if (!strcmp(option, "tcp")) {
7a033e08 1252 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1253 } else if(!strcmp(option, "http")) {
1254 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1255 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1256 } else {
2a21adf9
MS
1257 /* Write options back into the buffer, using memmove instead
1258 * of strcpy since the strings may overlap. */
1259 int len = strlen(option);
1260 memmove(++filename, option, len);
1261 filename += len;
921da217
LB
1262 if (option_list) *filename = '&';
1263 }
53620bba 1264 }
921da217 1265 *filename = 0;
53620bba
RB
1266 }
1267
90abbdba 1268 if (!lower_transport_mask)
2a1d51c5 1269 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1270
3e24c770 1271 if (s->oformat) {
b7dc88fc
MS
1272 /* Only UDP or TCP - UDP multicast isn't supported. */
1273 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1274 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1275 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1276 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1277 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1278 err = AVERROR(EINVAL);
1279 goto fail;
1280 }
1281 }
1282
4bc5cc23
MS
1283 /* Construct the URI used in request; this is similar to s->filename,
1284 * but with authentication credentials removed and RTSP specific options
1285 * stripped out. */
1286 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1287 host, port, "%s", path);
1288
f5d33f52
JA
1289 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1290 /* set up initial handshake for tunneling */
1291 char httpname[1024];
1292 char sessioncookie[17];
1293 char headers[1024];
1294
10ed37b5 1295 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1296 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1297 av_get_random_seed(), av_get_random_seed());
1298
1299 /* GET requests */
9290f15d 1300 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1301 err = AVERROR(EIO);
1302 goto fail;
1303 }
1304
1305 /* generate GET headers */
1306 snprintf(headers, sizeof(headers),
1307 "x-sessioncookie: %s\r\n"
1308 "Accept: application/x-rtsp-tunnelled\r\n"
1309 "Pragma: no-cache\r\n"
1310 "Cache-Control: no-cache\r\n",
1311 sessioncookie);
00e4a1f4 1312 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1313
1314 /* complete the connection */
9290f15d 1315 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1316 err = AVERROR(EIO);
1317 goto fail;
1318 }
1319
1320 /* POST requests */
9290f15d 1321 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1322 err = AVERROR(EIO);
1323 goto fail;
1324 }
1325
1326 /* generate POST headers */
1327 snprintf(headers, sizeof(headers),
1328 "x-sessioncookie: %s\r\n"
1329 "Content-Type: application/x-rtsp-tunnelled\r\n"
1330 "Pragma: no-cache\r\n"
1331 "Cache-Control: no-cache\r\n"
1332 "Content-Length: 32767\r\n"
1333 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1334 sessioncookie);
00e4a1f4
JA
1335 ff_http_set_headers(rt->rtsp_hd_out, headers);
1336 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1337
a8ead332
MS
1338 /* Initialize the authentication state for the POST session. The HTTP
1339 * protocol implementation doesn't properly handle multi-pass
1340 * authentication for POST requests, since it would require one of
1341 * the following:
1342 * - implementing Expect: 100-continue, which many HTTP servers
1343 * don't support anyway, even less the RTSP servers that do HTTP
1344 * tunneling
1345 * - sending the whole POST data until getting a 401 reply specifying
1346 * what authentication method to use, then resending all that data
1347 * - waiting for potential 401 replies directly after sending the
1348 * POST header (waiting for some unspecified time)
1349 * Therefore, we copy the full auth state, which works for both basic
1350 * and digest. (For digest, we would have to synchronize the nonce
1351 * count variable between the two sessions, if we'd do more requests
1352 * with the original session, though.)
1353 */
1354 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1355
9290f15d
MS
1356 /* complete the connection */
1357 if (url_connect(rt->rtsp_hd_out)) {
1358 err = AVERROR(EIO);
1359 goto fail;
1360 }
f5d33f52 1361 } else {
48e77473 1362 /* open the tcp connection */
41874d0a 1363 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1364 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1365 err = AVERROR(EIO);
1366 goto fail;
1367 }
00e4a1f4 1368 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1369 }
53620bba
RB
1370 rt->seq = 0;
1371
00e4a1f4 1372 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1373 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1374 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1375 NULL, 0, NI_NUMERICHOST);
1376 }
1377
c8965800
RB
1378 /* request options supported by the server; this also detects server
1379 * type */
1cf151e9 1380 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1381 cmd[0] = 0;
2e889ae4 1382 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1383 av_strlcat(cmd,
1384 /**
1385 * The following entries are required for proper
1386 * streaming from a Realmedia server. They are
1387 * interdependent in some way although we currently
1388 * don't quite understand how. Values were copied
1389 * from mplayer SVN r23589.
1390 * @param CompanyID is a 16-byte ID in base64
1391 * @param ClientChallenge is a 16-byte ID in hex
1392 */
1393 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1394 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1395 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1396 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1397 sizeof(cmd));
b17d11c6 1398 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1399 if (reply->status_code != RTSP_STATUS_OK) {
1400 err = AVERROR_INVALIDDATA;
1401 goto fail;
1402 }
1403
1404 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1405 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1406 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1407 continue;
7a86bafa
RB
1408 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1409 rt->server_type = RTSP_SERVER_WMS;
c8965800 1410 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1411 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1412 break;
1413 }
1414
44b70ce5 1415 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1416 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1417 else if (CONFIG_RTSP_MUXER)
c2688f3a 1418 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1419 if (err)
53620bba 1420 goto fail;
53620bba 1421
8a8754d8 1422 do {
c8965800
RB
1423 int lower_transport = ff_log2_tab[lower_transport_mask &
1424 ~(lower_transport_mask - 1)];
8a8754d8 1425
90abbdba 1426 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1427 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1428 real_challenge : NULL);
8a8754d8 1429 if (err < 0)
7e6ca34f 1430 goto fail;
90abbdba
RB
1431 lower_transport_mask &= ~(1 << lower_transport);
1432 if (lower_transport_mask == 0 && err == 1) {
adef229e 1433 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1434 goto fail;
1435 }
1436 } while (err);
53620bba 1437
ff762d6e 1438 rt->state = RTSP_STATE_IDLE;
c8965800 1439 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1440 return 0;
1441 fail:
3307e6ea 1442 ff_rtsp_close_streams(s);
b8c2c41d 1443 ff_rtsp_close_connections(s);
35cfd646 1444 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1445 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1446 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1447 reply->status_code,
1448 s->filename);
1449 goto redirect;
1450 }
57b5555c 1451 ff_network_close();
1617ad97
FB
1452 return err;
1453}
2e802e38 1454#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1455
44b70ce5 1456#if CONFIG_RTPDEC
0e59034e 1457static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1458 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1459{
1460 RTSPState *rt = s->priv_data;
1461 RTSPStream *rtsp_st;
1462 fd_set rfds;
a1ba71aa 1463 int fd, fd_rtcp, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1464 struct timeval tv;
1465
c8965800 1466 for (;;) {
0e59034e
RB
1467 if (url_interrupt_cb())
1468 return AVERROR(EINTR);
321259c1
MS
1469 if (wait_end && wait_end - av_gettime() < 0)
1470 return AVERROR(EAGAIN);
0e59034e
RB
1471 FD_ZERO(&rfds);
1472 if (rt->rtsp_hd) {
1473 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1474 FD_SET(tcp_fd, &rfds);
1475 } else {
1476 fd_max = 0;
1477 tcp_fd = -1;
1478 }
c8965800 1479 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1480 rtsp_st = rt->rtsp_streams[i];
1481 if (rtsp_st->rtp_handle) {
0e59034e 1482 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1483 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1484 if (FFMAX(fd, fd_rtcp) > fd_max)
1485 fd_max = FFMAX(fd, fd_rtcp);
0e59034e 1486 FD_SET(fd, &rfds);
a1ba71aa 1487 FD_SET(fd_rtcp, &rfds);
0e59034e
RB
1488 }
1489 }
1490 tv.tv_sec = 0;
9cba6f5f 1491 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1492 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1493 if (n > 0) {
9cba6f5f 1494 timeout_cnt = 0;
c8965800 1495 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1496 rtsp_st = rt->rtsp_streams[i];
1497 if (rtsp_st->rtp_handle) {
1498 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1499 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1500 if (FD_ISSET(fd_rtcp, &rfds) || FD_ISSET(fd, &rfds)) {
0e59034e
RB
1501 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1502 if (ret > 0) {
1503 *prtsp_st = rtsp_st;
1504 return ret;
1505 }
1506 }
1507 }
1508 }
5fe8021a 1509#if CONFIG_RTSP_DEMUXER
27000636 1510 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1511 RTSPMessageHeader reply;
1512
3032276b
MS
1513 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1514 if (ret < 0)
1515 return ret;
0e59034e 1516 /* XXX: parse message */
c02fd3d2 1517 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1518 return 0;
1519 }
5fe8021a 1520#endif
9cba6f5f 1521 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1522 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1523 } else if (n < 0 && errno != EINTR)
1524 return AVERROR(errno);
0e59034e
RB
1525 }
1526}
1527
0526c6f7 1528int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1529{
1530 RTSPState *rt = s->priv_data;
1531 int ret, len;
321259c1
MS
1532 RTSPStream *rtsp_st, *first_queue_st = NULL;
1533 int64_t wait_end = 0;
0e59034e 1534
b20359f5
JA
1535 if (rt->nb_byes == rt->nb_rtsp_streams)
1536 return AVERROR_EOF;
1537
0e59034e
RB
1538 /* get next frames from the same RTP packet */
1539 if (rt->cur_transport_priv) {
c8965800 1540 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1541 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1542 } else
0e59034e
RB
1543 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1544 if (ret == 0) {
1545 rt->cur_transport_priv = NULL;
1546 return 0;
1547 } else if (ret == 1) {
1548 return 0;
c8965800 1549 } else
0e59034e 1550 rt->cur_transport_priv = NULL;
0e59034e
RB
1551 }
1552
321259c1
MS
1553 if (rt->transport == RTSP_TRANSPORT_RTP) {
1554 int i;
1555 int64_t first_queue_time = 0;
1556 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1557 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
1558 int64_t queue_time = ff_rtp_queued_packet_time(rtpctx);
1559 if (queue_time && (queue_time - first_queue_time < 0 ||
1560 !first_queue_time)) {
1561 first_queue_time = queue_time;
1562 first_queue_st = rt->rtsp_streams[i];
1563 }
1564 }
1565 if (first_queue_time)
1566 wait_end = first_queue_time + s->max_delay;
1567 }
1568
0e59034e
RB
1569 /* read next RTP packet */
1570 redo:
96a7c975
MS
1571 if (!rt->recvbuf) {
1572 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1573 if (!rt->recvbuf)
1574 return AVERROR(ENOMEM);
1575 }
1576
0e59034e
RB
1577 switch(rt->lower_transport) {
1578 default:
5fe8021a 1579#if CONFIG_RTSP_DEMUXER
0e59034e 1580 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1581 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1582 break;
5fe8021a 1583#endif
0e59034e
RB
1584 case RTSP_LOWER_TRANSPORT_UDP:
1585 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1586 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
0e59034e
RB
1587 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1588 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1589 break;
1590 }
321259c1
MS
1591 if (len == AVERROR(EAGAIN) && first_queue_st &&
1592 rt->transport == RTSP_TRANSPORT_RTP) {
1593 rtsp_st = first_queue_st;
1594 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1595 goto end;
1596 }
0e59034e
RB
1597 if (len < 0)
1598 return len;
1599 if (len == 0)
1600 return AVERROR_EOF;
c8965800 1601 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1602 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1603 } else {
ad4ad27f 1604 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1605 if (ret < 0) {
1606 /* Either bad packet, or a RTCP packet. Check if the
1607 * first_rtcp_ntp_time field was initialized. */
1608 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1609 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1610 /* first_rtcp_ntp_time has been initialized for this stream,
1611 * copy the same value to all other uninitialized streams,
1612 * in order to map their timestamp origin to the same ntp time
1613 * as this one. */
1614 int i;
1615 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1616 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
2cab6b48
MS
1617 if (rtpctx2 &&
1618 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE)
1619 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
1620 }
1621 }
b20359f5
JA
1622 if (ret == -RTCP_BYE) {
1623 rt->nb_byes++;
1624
1625 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1626 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1627
1628 if (rt->nb_byes == rt->nb_rtsp_streams)
1629 return AVERROR_EOF;
1630 }
2cab6b48
MS
1631 }
1632 }
321259c1 1633end:
0e59034e
RB
1634 if (ret < 0)
1635 goto redo;
c8965800 1636 if (ret == 1)
0e59034e
RB
1637 /* more packets may follow, so we save the RTP context */
1638 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1639
1640 return ret;
1641}
44b70ce5 1642#endif /* CONFIG_RTPDEC */
0e59034e 1643
44b70ce5 1644#if CONFIG_SDP_DEMUXER
cb1fdc61 1645static int sdp_probe(AVProbeData *p1)
93ced3e8 1646{
0e1ceacd 1647 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1648
3fbd12d1 1649 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1650 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1651 if (p + sizeof("c=IN IP") - 1 < p_end &&
1652 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1653 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1654
c8965800 1655 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1656 if (++p >= p_end)
cb1fdc61 1657 break;
cb1fdc61
FB
1658 if (*p == '\r')
1659 p++;
1660 }
93ced3e8
FB
1661 return 0;
1662}
1663
c8965800 1664static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1665{
8b1ab7bf 1666 RTSPState *rt = s->priv_data;
93ced3e8
FB
1667 RTSPStream *rtsp_st;
1668 int size, i, err;
1669 char *content;
1670 char url[1024];
1671
57b5555c
MS
1672 if (!ff_network_init())
1673 return AVERROR(EIO);
1674
93ced3e8
FB
1675 /* read the whole sdp file */
1676 /* XXX: better loading */
1677 content = av_malloc(SDP_MAX_SIZE);
899681cd 1678 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1679 if (size <= 0) {
1680 av_free(content);
1681 return AVERROR_INVALIDDATA;
1682 }
1683 content[size] ='\0';
1684
0526c6f7 1685 ff_sdp_parse(s, content);
93ced3e8
FB
1686 av_free(content);
1687
1688 /* open each RTP stream */
c8965800 1689 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1690 char namebuf[50];
8b1ab7bf 1691 rtsp_st = rt->rtsp_streams[i];
115329f1 1692
3fbd12d1
MS
1693 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1694 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1695 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1696 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1697 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1698 rtsp_st->sdp_ttl);
dbf30963 1699 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1700 err = AVERROR_INVALIDDATA;
1701 goto fail;
1702 }
ee0cb67f 1703 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1704 goto fail;
93ced3e8
FB
1705 }
1706 return 0;
c8965800 1707fail:
3307e6ea 1708 ff_rtsp_close_streams(s);
57b5555c 1709 ff_network_close();
93ced3e8
FB
1710 return err;
1711}
1712
93ced3e8
FB
1713static int sdp_read_close(AVFormatContext *s)
1714{
3307e6ea 1715 ff_rtsp_close_streams(s);
57b5555c 1716 ff_network_close();
93ced3e8
FB
1717 return 0;
1718}
1719
ff70e601 1720AVInputFormat sdp_demuxer = {
93ced3e8 1721 "sdp",
bde15e74 1722 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1723 sizeof(RTSPState),
1724 sdp_probe,
1725 sdp_read_header,
0526c6f7 1726 ff_rtsp_fetch_packet,
93ced3e8
FB
1727 sdp_read_close,
1728};
44b70ce5 1729#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1730
44b70ce5 1731#if CONFIG_RTP_DEMUXER
44594cc7
MS
1732static int rtp_probe(AVProbeData *p)
1733{
1734 if (av_strstart(p->filename, "rtp:", NULL))
1735 return AVPROBE_SCORE_MAX;
1736 return 0;
1737}
1738
1739static int rtp_read_header(AVFormatContext *s,
1740 AVFormatParameters *ap)
1741{
1742 uint8_t recvbuf[1500];
1743 char host[500], sdp[500];
1744 int ret, port;
1745 URLContext* in = NULL;
1746 int payload_type;
1747 AVCodecContext codec;
1748 struct sockaddr_storage addr;
1749 ByteIOContext pb;
1750 socklen_t addrlen = sizeof(addr);
1751
1752 if (!ff_network_init())
1753 return AVERROR(EIO);
1754
1755 ret = url_open(&in, s->filename, URL_RDONLY);
1756 if (ret)
1757 goto fail;
1758
1759 while (1) {
1760 ret = url_read(in, recvbuf, sizeof(recvbuf));
1761 if (ret == AVERROR(EAGAIN))
1762 continue;
1763 if (ret < 0)
1764 goto fail;
1765 if (ret < 12) {
1766 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1767 continue;
1768 }
1769
1770 if ((recvbuf[0] & 0xc0) != 0x80) {
1771 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1772 "received\n");
1773 continue;
1774 }
1775
1776 payload_type = recvbuf[1] & 0x7f;
1777 break;
1778 }
1779 getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
1780 url_close(in);
1781 in = NULL;
1782
1783 memset(&codec, 0, sizeof(codec));
1784 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1785 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1786 "without an SDP file describing it\n",
1787 payload_type);
1788 goto fail;
1789 }
1790 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1791 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1792 "properly you need an SDP file "
1793 "describing it\n");
1794 }
1795
1796 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1797 NULL, 0, s->filename);
1798
1799 snprintf(sdp, sizeof(sdp),
1800 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1801 addr.ss_family == AF_INET ? 4 : 6, host,
1802 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1803 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1804 port, payload_type);
1805 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1806
1807 init_put_byte(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
1808 s->pb = &pb;
1809
1810 /* sdp_read_header initializes this again */
1811 ff_network_close();
1812
1813 ret = sdp_read_header(s, ap);
1814 s->pb = NULL;
1815 return ret;
1816
1817fail:
1818 if (in)
1819 url_close(in);
1820 ff_network_close();
1821 return ret;
1822}
1823
1824AVInputFormat rtp_demuxer = {
1825 "rtp",
1826 NULL_IF_CONFIG_SMALL("RTP input format"),
1827 sizeof(RTSPState),
1828 rtp_probe,
1829 rtp_read_header,
0526c6f7 1830 ff_rtsp_fetch_packet,
44594cc7
MS
1831 sdp_read_close,
1832 .flags = AVFMT_NOFILE,
1833};
44b70ce5 1834#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1835