rtsp: Parse RealRTSP sample rate declarations from the SDP
[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
RB
137static int sdp_parse_rtpmap(AVFormatContext *s,
138 AVCodecContext *codec, RTSPStream *rtsp_st,
c8965800 139 int payload_type, const char *p)
93ced3e8
FB
140{
141 char buf[256];
d1ccf0e0
RD
142 int i;
143 AVCodec *c;
7b49ce2e 144 const char *c_name;
93ced3e8 145
d1ccf0e0 146 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
147 * see if we can handle this kind of payload.
148 * The space should normally not be there but some Real streams or
149 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
150 * have a trailing space. */
151 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 152 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
153 RTPDynamicProtocolHandler *handler =
154 ff_rtp_handler_find_by_name(buf, codec->codec_type);
155 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
156 /* If no dynamic handler was found, check with the list of standard
157 * allocated types, if such a stream for some reason happens to
158 * use a private payload type. This isn't handled in rtpdec.c, since
159 * the format name from the rtpmap line never is passed into rtpdec. */
160 if (!rtsp_st->dynamic_handler)
161 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 162 } else {
c8965800
RB
163 /* We are in a standard case
164 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 165 /* search into AVRtpPayloadTypes[] */
7ed19d7f 166 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
167 }
168
169 c = avcodec_find_decoder(codec->codec_id);
170 if (c && c->name)
7b49ce2e 171 c_name = c->name;
d1ccf0e0 172 else
170870b7 173 c_name = "(null)";
d1ccf0e0 174
7515ed0c
RB
175 get_word_sep(buf, sizeof(buf), "/", &p);
176 i = atoi(buf);
177 switch (codec->codec_type) {
72415b2a 178 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
179 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
180 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
181 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
182 if (i > 0) {
183 codec->sample_rate = i;
184 get_word_sep(buf, sizeof(buf), "/", &p);
185 i = atoi(buf);
186 if (i > 0)
187 codec->channels = i;
188 // TODO: there is a bug here; if it is a mono stream, and
189 // less than 22000Hz, faad upconverts to stereo and twice
190 // the frequency. No problem, but the sample rate is being
191 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 192 }
7515ed0c
RB
193 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
194 codec->sample_rate);
195 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
196 codec->channels);
197 break;
72415b2a 198 case AVMEDIA_TYPE_VIDEO:
7515ed0c
RB
199 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
200 break;
201 default:
202 break;
203 }
204 return 0;
93ced3e8
FB
205}
206
c2bfd816 207/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
208 * is broken out as a function because it is used in rtp_h264.c, which is
209 * forthcoming. */
3307e6ea 210int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 211 char *value, int value_size)
d0deedcb 212{
30619e6e 213 *p += strspn(*p, SPACE_CHARS);
c8965800 214 if (**p) {
d0deedcb
RM
215 get_word_sep(attr, attr_size, "=", p);
216 if (**p == '=')
217 (*p)++;
218 get_word_sep(value, value_size, ";", p);
219 if (**p == ';')
220 (*p)++;
221 return 1;
222 }
223 return 0;
224}
225
93ced3e8
FB
226typedef struct SDPParseState {
227 /* SDP only */
3fbd12d1 228 struct sockaddr_storage default_ip;
c8965800
RB
229 int default_ttl;
230 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
231} SDPParseState;
232
233static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
234 int letter, const char *buf)
235{
8b1ab7bf 236 RTSPState *rt = s->priv_data;
1617ad97
FB
237 char buf1[64], st_type[64];
238 const char *p;
72415b2a 239 enum AVMediaType codec_type;
fb65d2ca 240 int payload_type, i;
1617ad97
FB
241 AVStream *st;
242 RTSPStream *rtsp_st;
3fbd12d1 243 struct sockaddr_storage sdp_ip;
93ced3e8
FB
244 int ttl;
245
67c9cd69 246 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
247
248 p = buf;
cb760a47
RB
249 if (s1->skip_media && letter != 'm')
250 return;
c8965800 251 switch (letter) {
93ced3e8
FB
252 case 'c':
253 get_word(buf1, sizeof(buf1), &p);
254 if (strcmp(buf1, "IN") != 0)
255 return;
256 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 257 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
258 return;
259 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 260 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
261 return;
262 ttl = 16;
263 if (*p == '/') {
264 p++;
265 get_word_sep(buf1, sizeof(buf1), "/", &p);
266 ttl = atoi(buf1);
267 }
268 if (s->nb_streams == 0) {
269 s1->default_ip = sdp_ip;
270 s1->default_ttl = ttl;
271 } else {
272 st = s->streams[s->nb_streams - 1];
273 rtsp_st = st->priv_data;
274 rtsp_st->sdp_ip = sdp_ip;
275 rtsp_st->sdp_ttl = ttl;
276 }
277 break;
1617ad97 278 case 's':
2ef6c124 279 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
280 break;
281 case 'i':
282 if (s->nb_streams == 0) {
2ef6c124 283 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
284 break;
285 }
286 break;
287 case 'm':
288 /* new stream */
cb760a47 289 s1->skip_media = 0;
1617ad97
FB
290 get_word(st_type, sizeof(st_type), &p);
291 if (!strcmp(st_type, "audio")) {
72415b2a 292 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 293 } else if (!strcmp(st_type, "video")) {
72415b2a 294 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 295 } else if (!strcmp(st_type, "application")) {
72415b2a 296 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 297 } else {
cb760a47 298 s1->skip_media = 1;
1617ad97
FB
299 return;
300 }
1617ad97
FB
301 rtsp_st = av_mallocz(sizeof(RTSPStream));
302 if (!rtsp_st)
303 return;
8b1ab7bf
FB
304 rtsp_st->stream_index = -1;
305 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
306
307 rtsp_st->sdp_ip = s1->default_ip;
308 rtsp_st->sdp_ttl = s1->default_ttl;
309
93ced3e8
FB
310 get_word(buf1, sizeof(buf1), &p); /* port */
311 rtsp_st->sdp_port = atoi(buf1);
312
313 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 314
93ced3e8
FB
315 /* XXX: handle list of formats */
316 get_word(buf1, sizeof(buf1), &p); /* format list */
317 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 318
7ed19d7f 319 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
320 /* no corresponding stream */
321 } else {
322 st = av_new_stream(s, 0);
323 if (!st)
324 return;
325 st->priv_data = rtsp_st;
326 rtsp_st->stream_index = st->index;
01f4895c 327 st->codec->codec_type = codec_type;
d1ccf0e0 328 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 329 RTPDynamicProtocolHandler *handler;
8b1ab7bf 330 /* if standard payload type, we can find the codec right now */
bf6d9818 331 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
6a7e31a9
MS
332 /* Even static payload types may need a custom depacketizer */
333 handler = ff_rtp_handler_find_by_id(
334 rtsp_st->sdp_payload_type, st->codec->codec_type);
335 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
336 }
337 }
1617ad97 338 /* put a default control url */
00eb13e0 339 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 340 sizeof(rtsp_st->control_url));
1617ad97
FB
341 break;
342 case 'a':
00eb13e0
AS
343 if (av_strstart(p, "control:", &p)) {
344 if (s->nb_streams == 0) {
345 if (!strncmp(p, "rtsp://", 7))
346 av_strlcpy(rt->control_uri, p,
347 sizeof(rt->control_uri));
348 } else {
0b6a7ff4
MS
349 char proto[32];
350 /* get the control url */
351 st = s->streams[s->nb_streams - 1];
352 rtsp_st = st->priv_data;
115329f1 353
0b6a7ff4
MS
354 /* XXX: may need to add full url resolution */
355 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
356 NULL, NULL, 0, p);
357 if (proto[0] == '\0') {
358 /* relative control URL */
359 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
360 av_strlcat(rtsp_st->control_url, "/",
361 sizeof(rtsp_st->control_url));
362 av_strlcat(rtsp_st->control_url, p,
363 sizeof(rtsp_st->control_url));
364 } else
365 av_strlcpy(rtsp_st->control_url, p,
366 sizeof(rtsp_st->control_url));
00eb13e0 367 }
83d14c85 368 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 369 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 370 get_word(buf1, sizeof(buf1), &p);
93ced3e8 371 payload_type = atoi(buf1);
83d14c85 372 st = s->streams[s->nb_streams - 1];
ff16f551 373 rtsp_st = st->priv_data;
8f3c87f3 374 sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p);
7fc8ac7f
JA
375 } else if (av_strstart(p, "fmtp:", &p) ||
376 av_strstart(p, "framesize:", &p)) {
93ced3e8 377 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
378 // let dynamic protocol handlers have a stab at the line.
379 get_word(buf1, sizeof(buf1), &p);
380 payload_type = atoi(buf1);
c8965800
RB
381 for (i = 0; i < s->nb_streams; i++) {
382 st = s->streams[i];
d0deedcb 383 rtsp_st = st->priv_data;
c8965800
RB
384 if (rtsp_st->sdp_payload_type == payload_type &&
385 rtsp_st->dynamic_handler &&
386 rtsp_st->dynamic_handler->parse_sdp_a_line)
387 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
388 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 389 }
c8965800 390 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
391 int64_t start, end;
392
393 // this is so that seeking on a streamed file can work.
394 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
395 s->start_time = start;
396 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
397 s->duration = (end == AV_NOPTS_VALUE) ?
398 AV_NOPTS_VALUE : end - start;
119b4668
RB
399 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
400 if (atoi(p) == 1)
401 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
402 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
403 s->nb_streams > 0) {
404 st = s->streams[s->nb_streams - 1];
405 st->codec->sample_rate = atoi(p);
1a30d541
RB
406 } else {
407 if (rt->server_type == RTSP_SERVER_WMS)
408 ff_wms_parse_sdp_a_line(s, p);
409 if (s->nb_streams > 0) {
c4a3d032
RB
410 if (rt->server_type == RTSP_SERVER_REAL)
411 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
412
413 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
414 if (rtsp_st->dynamic_handler &&
415 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
416 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
417 s->nb_streams - 1,
c4a3d032 418 rtsp_st->dynamic_protocol_context, buf);
1a30d541 419 }
1617ad97
FB
420 }
421 break;
422 }
423}
424
0526c6f7 425int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
426{
427 const char *p;
428 int letter;
9211bcdd
RB
429 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
430 * contain long SDP lines containing complete ASF Headers (several
431 * kB) or arrays of MDPR (RM stream descriptor) headers plus
432 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
433 * buffer is large.
434 *
afcea58c
JA
435 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
436 * in rtpdec_xiph.c. */
373afbaf 437 char buf[16384], *q;
93ced3e8 438 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 439
93ced3e8 440 memset(s1, 0, sizeof(SDPParseState));
1617ad97 441 p = content;
c8965800 442 for (;;) {
30619e6e 443 p += strspn(p, SPACE_CHARS);
1617ad97
FB
444 letter = *p;
445 if (letter == '\0')
446 break;
447 p++;
448 if (*p != '=')
449 goto next_line;
450 p++;
451 /* get the content */
452 q = buf;
b6892136 453 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
454 if ((q - buf) < sizeof(buf) - 1)
455 *q++ = *p;
456 p++;
457 }
458 *q = '\0';
93ced3e8 459 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
460 next_line:
461 while (*p != '\n' && *p != '\0')
462 p++;
463 if (*p == '\n')
464 p++;
465 }
466 return 0;
467}
44b70ce5 468#endif /* CONFIG_RTPDEC */
1617ad97 469
1ced9da3 470/* close and free RTSP streams */
3307e6ea 471void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 472{
52aa4338 473 RTSPState *rt = s->priv_data;
1ced9da3
LA
474 int i;
475 RTSPStream *rtsp_st;
476
c8965800 477 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
478 rtsp_st = rt->rtsp_streams[i];
479 if (rtsp_st) {
480 if (rtsp_st->transport_priv) {
fd450a51
MS
481 if (s->oformat) {
482 AVFormatContext *rtpctx = rtsp_st->transport_priv;
483 av_write_trailer(rtpctx);
b7dc88fc
MS
484 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
485 uint8_t *ptr;
486 url_close_dyn_buf(rtpctx->pb, &ptr);
487 av_free(ptr);
488 } else {
685e76b5 489 url_fclose(rtpctx->pb);
b7dc88fc 490 }
f86f6656
MS
491 av_metadata_free(&rtpctx->streams[0]->metadata);
492 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
493 av_free(rtpctx->streams[0]);
494 av_free(rtpctx);
44b70ce5 495 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3 496 ff_rdt_parse_close(rtsp_st->transport_priv);
44b70ce5 497 else if (CONFIG_RTPDEC)
1ced9da3
LA
498 rtp_parse_close(rtsp_st->transport_priv);
499 }
500 if (rtsp_st->rtp_handle)
501 url_close(rtsp_st->rtp_handle);
502 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
503 rtsp_st->dynamic_handler->close(
504 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
505 }
506 }
507 av_free(rt->rtsp_streams);
508 if (rt->asf_ctx) {
509 av_close_input_stream (rt->asf_ctx);
510 rt->asf_ctx = NULL;
511 }
96a7c975 512 av_free(rt->recvbuf);
1ced9da3
LA
513}
514
c8965800 515static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
516{
517 RTSPState *rt = s->priv_data;
518 AVStream *st = NULL;
519
520 /* open the RTP context */
521 if (rtsp_st->stream_index >= 0)
522 st = s->streams[rtsp_st->stream_index];
523 if (!st)
524 s->ctx_flags |= AVFMTCTX_NOHEADER;
525
44b70ce5 526 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
527 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
528 rtsp_st->rtp_handle,
529 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 530 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 531 rtsp_st->rtp_handle = NULL;
44b70ce5 532 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
533 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
534 rtsp_st->dynamic_protocol_context,
535 rtsp_st->dynamic_handler);
44b70ce5 536 else if (CONFIG_RTPDEC)
1ced9da3 537 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
538 rtsp_st->sdp_payload_type,
539 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
540 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
541
542 if (!rtsp_st->transport_priv) {
543 return AVERROR(ENOMEM);
44b70ce5 544 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 545 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
546 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
547 rtsp_st->dynamic_protocol_context,
548 rtsp_st->dynamic_handler);
549 }
550 }
551
552 return 0;
553}
554
6f5a3d0a 555#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
556static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
557{
558 const char *p;
559 int v;
560
561 p = *pp;
30619e6e 562 p += strspn(p, SPACE_CHARS);
1617ad97
FB
563 v = strtol(p, (char **)&p, 10);
564 if (*p == '-') {
565 p++;
566 *min_ptr = v;
567 v = strtol(p, (char **)&p, 10);
568 *max_ptr = v;
569 } else {
570 *min_ptr = v;
571 *max_ptr = v;
572 }
573 *pp = p;
574}
575
576/* XXX: only one transport specification is parsed */
a9e534d5 577static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
578{
579 char transport_protocol[16];
580 char profile[16];
581 char lower_transport[16];
582 char parameter[16];
583 RTSPTransportField *th;
584 char buf[256];
115329f1 585
1617ad97 586 reply->nb_transports = 0;
115329f1 587
c8965800 588 for (;;) {
30619e6e 589 p += strspn(p, SPACE_CHARS);
1617ad97
FB
590 if (*p == '\0')
591 break;
592
593 th = &reply->transports[reply->nb_transports];
594
115329f1 595 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 596 "/", &p);
e1502118 597 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
598 get_word_sep(profile, sizeof(profile), "/;,", &p);
599 lower_transport[0] = '\0';
600 /* rtp/avp/<protocol> */
601 if (*p == '/') {
7ecc634e
LB
602 get_word_sep(lower_transport, sizeof(lower_transport),
603 ";,", &p);
119b4668
RB
604 }
605 th->transport = RTSP_TRANSPORT_RTP;
606 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
607 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 608 /* x-pn-tng/<protocol> */
e1502118
LB
609 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
610 profile[0] = '\0';
119b4668 611 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 612 }
b6892136 613 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 614 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 615 else
90abbdba 616 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 617
1617ad97
FB
618 if (*p == ';')
619 p++;
620 /* get each parameter */
621 while (*p != '\0' && *p != ',') {
622 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
623 if (!strcmp(parameter, "port")) {
624 if (*p == '=') {
625 p++;
626 rtsp_parse_range(&th->port_min, &th->port_max, &p);
627 }
628 } else if (!strcmp(parameter, "client_port")) {
629 if (*p == '=') {
630 p++;
115329f1 631 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
632 &th->client_port_max, &p);
633 }
634 } else if (!strcmp(parameter, "server_port")) {
635 if (*p == '=') {
636 p++;
115329f1 637 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
638 &th->server_port_max, &p);
639 }
640 } else if (!strcmp(parameter, "interleaved")) {
641 if (*p == '=') {
642 p++;
115329f1 643 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
644 &th->interleaved_max, &p);
645 }
646 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
647 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
648 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
649 } else if (!strcmp(parameter, "ttl")) {
650 if (*p == '=') {
651 p++;
652 th->ttl = strtol(p, (char **)&p, 10);
653 }
654 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
655 if (*p == '=') {
656 p++;
657 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 658 get_sockaddr(buf, &th->destination);
1617ad97 659 }
619298a8
JW
660 } else if (!strcmp(parameter, "source")) {
661 if (*p == '=') {
662 p++;
663 get_word_sep(buf, sizeof(buf), ";,", &p);
664 av_strlcpy(th->source, buf, sizeof(th->source));
665 }
1617ad97 666 }
619298a8 667
1617ad97
FB
668 while (*p != ';' && *p != '\0' && *p != ',')
669 p++;
670 if (*p == ';')
671 p++;
672 }
673 if (*p == ',')
674 p++;
675
676 reply->nb_transports++;
677 }
678}
679
2626308a
MS
680void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
681 HTTPAuthState *auth_state)
1617ad97
FB
682{
683 const char *p;
684
685 /* NOTE: we do case independent match for broken servers */
686 p = buf;
f7d78f36 687 if (av_stristart(p, "Session:", &p)) {
30e79845 688 int t;
1617ad97 689 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
690 if (av_stristart(p, ";timeout=", &p) &&
691 (t = strtol(p, NULL, 10)) > 0) {
692 reply->timeout = t;
693 }
f7d78f36 694 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 695 reply->content_length = strtol(p, NULL, 10);
f7d78f36 696 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 697 rtsp_parse_transport(reply, p);
f7d78f36 698 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 699 reply->seq = strtol(p, NULL, 10);
f7d78f36 700 } else if (av_stristart(p, "Range:", &p)) {
31693e00 701 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 702 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 703 p += strspn(p, SPACE_CHARS);
30aa6aed 704 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 705 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 706 p += strspn(p, SPACE_CHARS);
7a86bafa 707 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
708 } else if (av_stristart(p, "Notice:", &p) ||
709 av_stristart(p, "X-Notice:", &p)) {
710 reply->notice = strtol(p, NULL, 10);
d243ba30 711 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 712 p += strspn(p, SPACE_CHARS);
d243ba30 713 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a 714 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
30619e6e 715 p += strspn(p, SPACE_CHARS);
2626308a
MS
716 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
717 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
30619e6e 718 p += strspn(p, SPACE_CHARS);
2626308a 719 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
dd22cfb1
MS
720 } else if (av_stristart(p, "Content-Base:", &p)) {
721 p += strspn(p, SPACE_CHARS);
722 av_strlcpy(reply->content_base, p , sizeof(reply->content_base));
1617ad97
FB
723 }
724}
725
b7b8fc34 726/* skip a RTP/TCP interleaved packet */
ec55edba 727void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
728{
729 RTSPState *rt = s->priv_data;
730 int ret, len, len1;
731 uint8_t buf[1024];
732
0e848977 733 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
734 if (ret != 3)
735 return;
80fb8234 736 len = AV_RB16(buf + 1);
67c9cd69
BC
737
738 dprintf(s, "skipping RTP packet len=%d\n", len);
739
b7b8fc34
FB
740 /* skip payload */
741 while (len > 0) {
742 len1 = len;
743 if (len1 > sizeof(buf))
744 len1 = sizeof(buf);
0e848977 745 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
746 if (ret != len1)
747 return;
748 len -= len1;
749 }
750}
1617ad97 751
3307e6ea 752int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
753 unsigned char **content_ptr,
754 int return_on_interleaved_data)
1617ad97
FB
755{
756 RTSPState *rt = s->priv_data;
757 char buf[4096], buf1[1024], *q;
758 unsigned char ch;
759 const char *p;
7e726132 760 int ret, content_length, line_count = 0;
1617ad97
FB
761 unsigned char *content = NULL;
762
d541a7d2 763 memset(reply, 0, sizeof(*reply));
1617ad97 764
1617ad97 765 /* parse reply (XXX: use buffers) */
1617ad97 766 rt->last_reply[0] = '\0';
c8965800 767 for (;;) {
1617ad97 768 q = buf;
c8965800 769 for (;;) {
0e848977 770 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 771#ifdef DEBUG_RTP_TCP
67c9cd69 772 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
773#endif
774 if (ret != 1)
2401660d 775 return AVERROR_EOF;
1617ad97
FB
776 if (ch == '\n')
777 break;
b7b8fc34
FB
778 if (ch == '$') {
779 /* XXX: only parse it if first char on line ? */
7e726132
RB
780 if (return_on_interleaved_data) {
781 return 1;
782 } else
ec55edba 783 ff_rtsp_skip_packet(s);
b7b8fc34 784 } else if (ch != '\r') {
1617ad97
FB
785 if ((q - buf) < sizeof(buf) - 1)
786 *q++ = ch;
787 }
788 }
789 *q = '\0';
67c9cd69
BC
790
791 dprintf(s, "line='%s'\n", buf);
792
1617ad97
FB
793 /* test if last line */
794 if (buf[0] == '\0')
795 break;
796 p = buf;
797 if (line_count == 0) {
798 /* get reply code */
799 get_word(buf1, sizeof(buf1), &p);
800 get_word(buf1, sizeof(buf1), &p);
801 reply->status_code = atoi(buf1);
d93fdcbf 802 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 803 } else {
2626308a 804 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
805 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
806 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
807 }
808 line_count++;
809 }
115329f1 810
1617ad97 811 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 812 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 813
1617ad97
FB
814 content_length = reply->content_length;
815 if (content_length > 0) {
816 /* leave some room for a trailing '\0' (useful for simple parsing) */
817 content = av_malloc(content_length + 1);
0e848977 818 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
819 content[content_length] = '\0';
820 }
821 if (content_ptr)
822 *content_ptr = content;
e2e2e7dd
AB
823 else
824 av_free(content);
7e726132 825
7ed8211b
LB
826 if (rt->seq != reply->seq) {
827 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
828 rt->seq, reply->seq);
829 }
830
fccb1770
RB
831 /* EOS */
832 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
833 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 834 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 835 rt->state = RTSP_STATE_IDLE;
c8965800 836 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 837 return AVERROR(EIO); /* data or server error */
c8965800 838 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
839 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
840 return AVERROR(EPERM);
841
7e726132 842 return 0;
1617ad97
FB
843}
844
d0382374 845int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
846 const char *method, const char *url,
847 const char *headers,
848 const unsigned char *send_content,
849 int send_content_length)
29b9f58b
RB
850{
851 RTSPState *rt = s->priv_data;
f5d33f52
JA
852 char buf[4096], *out_buf;
853 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 854
f5d33f52
JA
855 /* Add in RTSP headers */
856 out_buf = buf;
29b9f58b 857 rt->seq++;
b17d11c6
MS
858 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
859 if (headers)
860 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 861 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
862 if (rt->session_id[0] != '\0' && (!headers ||
863 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 864 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 865 }
aa8bf2fb
MS
866 if (rt->auth[0]) {
867 char *str = ff_http_auth_create_response(&rt->auth_state,
868 rt->auth, url, method);
869 if (str)
870 av_strlcat(buf, str, sizeof(buf));
871 av_free(str);
872 }
dfd017bf
MS
873 if (send_content_length > 0 && send_content)
874 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 875 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 876
f5d33f52
JA
877 /* base64 encode rtsp if tunneling */
878 if (rt->control_transport == RTSP_MODE_TUNNEL) {
879 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
880 out_buf = base64buf;
881 }
882
67c9cd69
BC
883 dprintf(s, "Sending:\n%s--\n", buf);
884
f5d33f52
JA
885 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
886 if (send_content_length > 0 && send_content) {
887 if (rt->control_transport == RTSP_MODE_TUNNEL) {
888 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
889 "with content data not supported\n");
890 return AVERROR_PATCHWELCOME;
891 }
b8c2c41d 892 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 893 }
30e79845 894 rt->last_cmd_time = av_gettime();
d0382374
JA
895
896 return 0;
30e79845
RB
897}
898
d0382374 899int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 900 const char *url, const char *headers)
dfd017bf 901{
d0382374 902 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
903}
904
d0382374 905int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
906 const char *headers, RTSPMessageHeader *reply,
907 unsigned char **content_ptr)
30e79845 908{
d0382374 909 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 910 content_ptr, NULL, 0);
29b9f58b
RB
911}
912
d0382374 913int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
914 const char *method, const char *url,
915 const char *header,
916 RTSPMessageHeader *reply,
917 unsigned char **content_ptr,
918 const unsigned char *send_content,
919 int send_content_length)
dfd017bf 920{
30af0779
MS
921 RTSPState *rt = s->priv_data;
922 HTTPAuthType cur_auth_type;
d0382374 923 int ret;
30af0779
MS
924
925retry:
926 cur_auth_type = rt->auth_state.auth_type;
d0382374 927 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
928 send_content,
929 send_content_length)))
d0382374 930 return ret;
dfd017bf 931
d0382374
JA
932 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
933 return ret;
30af0779
MS
934
935 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
936 rt->auth_state.auth_type != HTTP_AUTH_NONE)
937 goto retry;
d0382374 938
bf55cf19 939 if (reply->status_code > 400){
d93fdcbf 940 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 941 method,
d93fdcbf
LB
942 reply->status_code,
943 reply->reason);
bf55cf19
LB
944 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
945 }
946
d0382374 947 return 0;
dfd017bf
MS
948}
949
53620bba 950/**
32e543f8 951 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 952 */
c8965800
RB
953static int make_setup_request(AVFormatContext *s, const char *host, int port,
954 int lower_transport, const char *real_challenge)
1617ad97
FB
955{
956 RTSPState *rt = s->priv_data;
f830c9a4 957 int rtx, j, i, err, interleave = 0;
1617ad97 958 RTSPStream *rtsp_st;
a9e534d5 959 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 960 char cmd[2048];
e9dea59f
RB
961 const char *trans_pref;
962
119b4668 963 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
964 trans_pref = "x-pn-tng";
965 else
966 trans_pref = "RTP/AVP";
115329f1 967
30e79845
RB
968 /* default timeout: 1 minute */
969 rt->timeout = 60;
970
1617ad97
FB
971 /* for each stream, make the setup request */
972 /* XXX: we assume the same server is used for the control of each
c8965800 973 * RTSP stream */
d1ccf0e0 974
c8965800 975 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
976 char transport[2048];
977
f830c9a4
RB
978 /**
979 * WMS serves all UDP data over a single connection, the RTX, which
980 * isn't necessarily the first in the SDP but has to be the first
981 * to be set up, else the second/third SETUP will fail with a 461.
982 */
983 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
984 rt->server_type == RTSP_SERVER_WMS) {
985 if (i == 0) {
986 /* rtx first */
987 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
988 int len = strlen(rt->rtsp_streams[rtx]->control_url);
989 if (len >= 4 &&
c8965800
RB
990 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
991 "/rtx"))
f830c9a4
RB
992 break;
993 }
994 if (rtx == rt->nb_rtsp_streams)
995 return -1; /* no RTX found */
996 rtsp_st = rt->rtsp_streams[rtx];
997 } else
998 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
999 } else
2fea9650 1000 rtsp_st = rt->rtsp_streams[i];
1617ad97 1001
1617ad97 1002 /* RTP/UDP */
90abbdba 1003 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1004 char buf[256];
85fb7b34 1005
f830c9a4
RB
1006 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1007 port = reply->transports[0].client_port_min;
1008 goto have_port;
1009 }
1010
85fb7b34 1011 /* first try in specified port range */
d1ccf0e0 1012 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1013 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1014 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1015 "?localport=%d", j);
c8965800
RB
1016 /* we will use two ports per rtp stream (rtp and rtcp) */
1017 j += 2;
1018 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1019 goto rtp_opened;
1020 }
1617ad97 1021 }
85fb7b34 1022
c8965800
RB
1023#if 0
1024 /* then try on any port */
1025 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1026 err = AVERROR_INVALIDDATA;
1027 goto fail;
1028 }
1029#endif
85fb7b34
FB
1030
1031 rtp_opened:
67f34aaa 1032 port = rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1033 have_port:
0ad306bc 1034 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1035 "%s/UDP;", trans_pref);
1036 if (rt->server_type != RTSP_SERVER_REAL)
1037 av_strlcat(transport, "unicast;", sizeof(transport));
1038 av_strlcatf(transport, sizeof(transport),
1039 "client_port=%d", port);
f830c9a4
RB
1040 if (rt->transport == RTSP_TRANSPORT_RTP &&
1041 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1042 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1043 }
1044
1045 /* RTP/TCP */
90abbdba 1046 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1047 /** For WMS streams, the application streams are only used for
1048 * UDP. When trying to set it up for TCP streams, the server
1049 * will return an error. Therefore, we skip those streams. */
1050 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1051 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1052 AVMEDIA_TYPE_DATA)
090438cc 1053 continue;
0ad306bc 1054 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1055 "%s/TCP;", trans_pref);
1056 if (rt->server_type == RTSP_SERVER_WMS)
1057 av_strlcat(transport, "unicast;", sizeof(transport));
1058 av_strlcatf(transport, sizeof(transport),
1059 "interleaved=%d-%d",
1060 interleave, interleave + 1);
1061 interleave += 2;
1617ad97
FB
1062 }
1063
90abbdba 1064 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1065 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1066 "%s/UDP;multicast", trans_pref);
1617ad97 1067 }
69adcc4f
MS
1068 if (s->oformat) {
1069 av_strlcat(transport, ";mode=receive", sizeof(transport));
1070 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1071 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1072 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1073 snprintf(cmd, sizeof(cmd),
b6892136 1074 "Transport: %s\r\n",
b17d11c6 1075 transport);
44b70ce5 1076 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1077 char real_res[41], real_csum[9];
1078 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1079 real_challenge);
1080 av_strlcatf(cmd, sizeof(cmd),
1081 "If-Match: %s\r\n"
1082 "RealChallenge2: %s, sd=%s\r\n",
1083 rt->session_id, real_res, real_csum);
1084 }
b17d11c6 1085 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1086 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1087 err = 1;
1088 goto fail;
7e6ca34f
RB
1089 } else if (reply->status_code != RTSP_STATUS_OK ||
1090 reply->nb_transports != 1) {
1617ad97
FB
1091 err = AVERROR_INVALIDDATA;
1092 goto fail;
1093 }
1094
1095 /* XXX: same protocol for all streams is required */
1096 if (i > 0) {
119b4668
RB
1097 if (reply->transports[0].lower_transport != rt->lower_transport ||
1098 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1099 err = AVERROR_INVALIDDATA;
1100 goto fail;
1101 }
1102 } else {
90abbdba 1103 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1104 rt->transport = reply->transports[0].transport;
1617ad97
FB
1105 }
1106
2901cc9a 1107 /* close RTP connection if not chosen */
90abbdba
RB
1108 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1109 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1110 url_close(rtsp_st->rtp_handle);
1111 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1112 }
1113
90abbdba
RB
1114 switch(reply->transports[0].lower_transport) {
1115 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1116 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1117 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1118 break;
115329f1 1119
c8965800
RB
1120 case RTSP_LOWER_TRANSPORT_UDP: {
1121 char url[1024];
1122
619298a8
JW
1123 /* Use source address if specified */
1124 if (reply->transports[0].source[0]) {
1125 ff_url_join(url, sizeof(url), "rtp", NULL,
1126 reply->transports[0].source,
1127 reply->transports[0].server_port_min, NULL);
1128 } else {
7bac991f
RB
1129 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1130 reply->transports[0].server_port_min, NULL);
619298a8 1131 }
c8965800
RB
1132 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1133 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1134 err = AVERROR_INVALIDDATA;
1135 goto fail;
1617ad97 1136 }
9c8fa20d
MS
1137 /* Try to initialize the connection state in a
1138 * potential NAT router by sending dummy packets.
1139 * RTP/RTCP dummy packets are used for RDT, too.
1140 */
44b70ce5
MS
1141 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1142 CONFIG_RTPDEC)
9c8fa20d 1143 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1144 break;
c8965800
RB
1145 }
1146 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1147 char url[1024], namebuf[50];
1148 struct sockaddr_storage addr;
c8965800
RB
1149 int port, ttl;
1150
7934b15d
MS
1151 if (reply->transports[0].destination.ss_family) {
1152 addr = reply->transports[0].destination;
c8965800
RB
1153 port = reply->transports[0].port_min;
1154 ttl = reply->transports[0].ttl;
1155 } else {
7934b15d 1156 addr = rtsp_st->sdp_ip;
c8965800
RB
1157 port = rtsp_st->sdp_port;
1158 ttl = rtsp_st->sdp_ttl;
1159 }
7934b15d
MS
1160 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1161 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1162 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1163 port, "?ttl=%d", ttl);
c8965800
RB
1164 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1165 err = AVERROR_INVALIDDATA;
1166 goto fail;
1617ad97
FB
1167 }
1168 break;
1169 }
c8965800 1170 }
d1ccf0e0 1171
ee0cb67f 1172 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1173 goto fail;
1617ad97
FB
1174 }
1175
30e79845
RB
1176 if (reply->timeout > 0)
1177 rt->timeout = reply->timeout;
1178
2e889ae4 1179 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1180 rt->need_subscription = 1;
1181
53620bba
RB
1182 return 0;
1183
1184fail:
c8965800 1185 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1186 if (rt->rtsp_streams[i]->rtp_handle) {
1187 url_close(rt->rtsp_streams[i]->rtp_handle);
1188 rt->rtsp_streams[i]->rtp_handle = NULL;
1189 }
1190 }
53620bba
RB
1191 return err;
1192}
1193
b8c2c41d
JA
1194void ff_rtsp_close_connections(AVFormatContext *s)
1195{
1196 RTSPState *rt = s->priv_data;
1197 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1198 url_close(rt->rtsp_hd);
6217b645 1199 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1200}
1201
3307e6ea 1202int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1203{
1204 RTSPState *rt = s->priv_data;
921da217
LB
1205 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1206 char *option_list, *option, *filename;
03f8fc08 1207 int port, err, tcp_fd;
354b7573 1208 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1209 int lower_transport_mask = 0;
1cf151e9 1210 char real_challenge[64];
03f8fc08
MS
1211 struct sockaddr_storage peer;
1212 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1213
1214 if (!ff_network_init())
1215 return AVERROR(EIO);
c8965800 1216redirect:
f5d33f52 1217 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1218 /* extract hostname and port */
f3bfe388 1219 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1220 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1221 if (*auth) {
aa8bf2fb 1222 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1223 }
53620bba
RB
1224 if (port < 0)
1225 port = RTSP_DEFAULT_PORT;
1226
1227 /* search for options */
602eb779 1228 option_list = strrchr(path, '?');
53620bba 1229 if (option_list) {
2a21adf9
MS
1230 /* Strip out the RTSP specific options, write out the rest of
1231 * the options back into the same string. */
1232 filename = option_list;
c8965800 1233 while (option_list) {
53620bba 1234 /* move the option pointer */
921da217 1235 option = ++option_list;
53620bba
RB
1236 option_list = strchr(option_list, '&');
1237 if (option_list)
921da217
LB
1238 *option_list = 0;
1239
53620bba 1240 /* handle the options */
c8965800 1241 if (!strcmp(option, "udp")) {
7a033e08 1242 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1243 } else if (!strcmp(option, "multicast")) {
7a033e08 1244 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1245 } else if (!strcmp(option, "tcp")) {
7a033e08 1246 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1247 } else if(!strcmp(option, "http")) {
1248 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1249 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1250 } else {
2a21adf9
MS
1251 /* Write options back into the buffer, using memmove instead
1252 * of strcpy since the strings may overlap. */
1253 int len = strlen(option);
1254 memmove(++filename, option, len);
1255 filename += len;
921da217
LB
1256 if (option_list) *filename = '&';
1257 }
53620bba 1258 }
921da217 1259 *filename = 0;
53620bba
RB
1260 }
1261
90abbdba 1262 if (!lower_transport_mask)
2a1d51c5 1263 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1264
3e24c770 1265 if (s->oformat) {
b7dc88fc
MS
1266 /* Only UDP or TCP - UDP multicast isn't supported. */
1267 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1268 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1269 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1270 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1271 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1272 err = AVERROR(EINVAL);
1273 goto fail;
1274 }
1275 }
1276
4bc5cc23
MS
1277 /* Construct the URI used in request; this is similar to s->filename,
1278 * but with authentication credentials removed and RTSP specific options
1279 * stripped out. */
1280 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1281 host, port, "%s", path);
1282
f5d33f52
JA
1283 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1284 /* set up initial handshake for tunneling */
1285 char httpname[1024];
1286 char sessioncookie[17];
1287 char headers[1024];
1288
10ed37b5 1289 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1290 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1291 av_get_random_seed(), av_get_random_seed());
1292
1293 /* GET requests */
9290f15d 1294 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1295 err = AVERROR(EIO);
1296 goto fail;
1297 }
1298
1299 /* generate GET headers */
1300 snprintf(headers, sizeof(headers),
1301 "x-sessioncookie: %s\r\n"
1302 "Accept: application/x-rtsp-tunnelled\r\n"
1303 "Pragma: no-cache\r\n"
1304 "Cache-Control: no-cache\r\n",
1305 sessioncookie);
00e4a1f4 1306 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1307
1308 /* complete the connection */
9290f15d 1309 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1310 err = AVERROR(EIO);
1311 goto fail;
1312 }
1313
1314 /* POST requests */
9290f15d 1315 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1316 err = AVERROR(EIO);
1317 goto fail;
1318 }
1319
1320 /* generate POST headers */
1321 snprintf(headers, sizeof(headers),
1322 "x-sessioncookie: %s\r\n"
1323 "Content-Type: application/x-rtsp-tunnelled\r\n"
1324 "Pragma: no-cache\r\n"
1325 "Cache-Control: no-cache\r\n"
1326 "Content-Length: 32767\r\n"
1327 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1328 sessioncookie);
00e4a1f4
JA
1329 ff_http_set_headers(rt->rtsp_hd_out, headers);
1330 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1331
a8ead332
MS
1332 /* Initialize the authentication state for the POST session. The HTTP
1333 * protocol implementation doesn't properly handle multi-pass
1334 * authentication for POST requests, since it would require one of
1335 * the following:
1336 * - implementing Expect: 100-continue, which many HTTP servers
1337 * don't support anyway, even less the RTSP servers that do HTTP
1338 * tunneling
1339 * - sending the whole POST data until getting a 401 reply specifying
1340 * what authentication method to use, then resending all that data
1341 * - waiting for potential 401 replies directly after sending the
1342 * POST header (waiting for some unspecified time)
1343 * Therefore, we copy the full auth state, which works for both basic
1344 * and digest. (For digest, we would have to synchronize the nonce
1345 * count variable between the two sessions, if we'd do more requests
1346 * with the original session, though.)
1347 */
1348 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1349
9290f15d
MS
1350 /* complete the connection */
1351 if (url_connect(rt->rtsp_hd_out)) {
1352 err = AVERROR(EIO);
1353 goto fail;
1354 }
f5d33f52 1355 } else {
48e77473 1356 /* open the tcp connection */
41874d0a 1357 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1358 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1359 err = AVERROR(EIO);
1360 goto fail;
1361 }
00e4a1f4 1362 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1363 }
53620bba
RB
1364 rt->seq = 0;
1365
00e4a1f4 1366 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1367 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1368 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1369 NULL, 0, NI_NUMERICHOST);
1370 }
1371
c8965800
RB
1372 /* request options supported by the server; this also detects server
1373 * type */
1cf151e9 1374 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1375 cmd[0] = 0;
2e889ae4 1376 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1377 av_strlcat(cmd,
1378 /**
1379 * The following entries are required for proper
1380 * streaming from a Realmedia server. They are
1381 * interdependent in some way although we currently
1382 * don't quite understand how. Values were copied
1383 * from mplayer SVN r23589.
1384 * @param CompanyID is a 16-byte ID in base64
1385 * @param ClientChallenge is a 16-byte ID in hex
1386 */
1387 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1388 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1389 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1390 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1391 sizeof(cmd));
b17d11c6 1392 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1393 if (reply->status_code != RTSP_STATUS_OK) {
1394 err = AVERROR_INVALIDDATA;
1395 goto fail;
1396 }
1397
1398 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1399 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1400 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1401 continue;
7a86bafa
RB
1402 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1403 rt->server_type = RTSP_SERVER_WMS;
c8965800 1404 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1405 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1406 break;
1407 }
1408
44b70ce5 1409 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1410 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1411 else if (CONFIG_RTSP_MUXER)
c2688f3a 1412 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1413 if (err)
53620bba 1414 goto fail;
53620bba 1415
8a8754d8 1416 do {
c8965800
RB
1417 int lower_transport = ff_log2_tab[lower_transport_mask &
1418 ~(lower_transport_mask - 1)];
8a8754d8 1419
90abbdba 1420 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1421 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1422 real_challenge : NULL);
8a8754d8 1423 if (err < 0)
7e6ca34f 1424 goto fail;
90abbdba
RB
1425 lower_transport_mask &= ~(1 << lower_transport);
1426 if (lower_transport_mask == 0 && err == 1) {
adef229e 1427 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1428 goto fail;
1429 }
1430 } while (err);
53620bba 1431
ff762d6e 1432 rt->state = RTSP_STATE_IDLE;
c8965800 1433 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1434 return 0;
1435 fail:
3307e6ea 1436 ff_rtsp_close_streams(s);
b8c2c41d 1437 ff_rtsp_close_connections(s);
35cfd646 1438 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1439 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1440 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1441 reply->status_code,
1442 s->filename);
1443 goto redirect;
1444 }
57b5555c 1445 ff_network_close();
1617ad97
FB
1446 return err;
1447}
2e802e38 1448#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1449
44b70ce5 1450#if CONFIG_RTPDEC
0e59034e 1451static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1452 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1453{
1454 RTSPState *rt = s->priv_data;
1455 RTSPStream *rtsp_st;
1456 fd_set rfds;
a1ba71aa 1457 int fd, fd_rtcp, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1458 struct timeval tv;
1459
c8965800 1460 for (;;) {
0e59034e
RB
1461 if (url_interrupt_cb())
1462 return AVERROR(EINTR);
321259c1
MS
1463 if (wait_end && wait_end - av_gettime() < 0)
1464 return AVERROR(EAGAIN);
0e59034e
RB
1465 FD_ZERO(&rfds);
1466 if (rt->rtsp_hd) {
1467 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1468 FD_SET(tcp_fd, &rfds);
1469 } else {
1470 fd_max = 0;
1471 tcp_fd = -1;
1472 }
c8965800 1473 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1474 rtsp_st = rt->rtsp_streams[i];
1475 if (rtsp_st->rtp_handle) {
0e59034e 1476 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1477 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1478 if (FFMAX(fd, fd_rtcp) > fd_max)
1479 fd_max = FFMAX(fd, fd_rtcp);
0e59034e 1480 FD_SET(fd, &rfds);
a1ba71aa 1481 FD_SET(fd_rtcp, &rfds);
0e59034e
RB
1482 }
1483 }
1484 tv.tv_sec = 0;
9cba6f5f 1485 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1486 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1487 if (n > 0) {
9cba6f5f 1488 timeout_cnt = 0;
c8965800 1489 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1490 rtsp_st = rt->rtsp_streams[i];
1491 if (rtsp_st->rtp_handle) {
1492 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1493 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1494 if (FD_ISSET(fd_rtcp, &rfds) || FD_ISSET(fd, &rfds)) {
0e59034e
RB
1495 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1496 if (ret > 0) {
1497 *prtsp_st = rtsp_st;
1498 return ret;
1499 }
1500 }
1501 }
1502 }
5fe8021a 1503#if CONFIG_RTSP_DEMUXER
27000636 1504 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1505 RTSPMessageHeader reply;
1506
3032276b
MS
1507 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1508 if (ret < 0)
1509 return ret;
0e59034e 1510 /* XXX: parse message */
c02fd3d2 1511 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1512 return 0;
1513 }
5fe8021a 1514#endif
9cba6f5f 1515 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1516 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1517 } else if (n < 0 && errno != EINTR)
1518 return AVERROR(errno);
0e59034e
RB
1519 }
1520}
1521
0526c6f7 1522int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1523{
1524 RTSPState *rt = s->priv_data;
1525 int ret, len;
321259c1
MS
1526 RTSPStream *rtsp_st, *first_queue_st = NULL;
1527 int64_t wait_end = 0;
0e59034e 1528
b20359f5
JA
1529 if (rt->nb_byes == rt->nb_rtsp_streams)
1530 return AVERROR_EOF;
1531
0e59034e
RB
1532 /* get next frames from the same RTP packet */
1533 if (rt->cur_transport_priv) {
c8965800 1534 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1535 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1536 } else
0e59034e
RB
1537 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1538 if (ret == 0) {
1539 rt->cur_transport_priv = NULL;
1540 return 0;
1541 } else if (ret == 1) {
1542 return 0;
c8965800 1543 } else
0e59034e 1544 rt->cur_transport_priv = NULL;
0e59034e
RB
1545 }
1546
321259c1
MS
1547 if (rt->transport == RTSP_TRANSPORT_RTP) {
1548 int i;
1549 int64_t first_queue_time = 0;
1550 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1551 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
1552 int64_t queue_time = ff_rtp_queued_packet_time(rtpctx);
1553 if (queue_time && (queue_time - first_queue_time < 0 ||
1554 !first_queue_time)) {
1555 first_queue_time = queue_time;
1556 first_queue_st = rt->rtsp_streams[i];
1557 }
1558 }
1559 if (first_queue_time)
1560 wait_end = first_queue_time + s->max_delay;
1561 }
1562
0e59034e
RB
1563 /* read next RTP packet */
1564 redo:
96a7c975
MS
1565 if (!rt->recvbuf) {
1566 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1567 if (!rt->recvbuf)
1568 return AVERROR(ENOMEM);
1569 }
1570
0e59034e
RB
1571 switch(rt->lower_transport) {
1572 default:
5fe8021a 1573#if CONFIG_RTSP_DEMUXER
0e59034e 1574 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1575 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1576 break;
5fe8021a 1577#endif
0e59034e
RB
1578 case RTSP_LOWER_TRANSPORT_UDP:
1579 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1580 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
0e59034e
RB
1581 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1582 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1583 break;
1584 }
321259c1
MS
1585 if (len == AVERROR(EAGAIN) && first_queue_st &&
1586 rt->transport == RTSP_TRANSPORT_RTP) {
1587 rtsp_st = first_queue_st;
1588 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1589 goto end;
1590 }
0e59034e
RB
1591 if (len < 0)
1592 return len;
1593 if (len == 0)
1594 return AVERROR_EOF;
c8965800 1595 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1596 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1597 } else {
ad4ad27f 1598 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1599 if (ret < 0) {
1600 /* Either bad packet, or a RTCP packet. Check if the
1601 * first_rtcp_ntp_time field was initialized. */
1602 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1603 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1604 /* first_rtcp_ntp_time has been initialized for this stream,
1605 * copy the same value to all other uninitialized streams,
1606 * in order to map their timestamp origin to the same ntp time
1607 * as this one. */
1608 int i;
1609 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1610 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
2cab6b48
MS
1611 if (rtpctx2 &&
1612 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE)
1613 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
1614 }
1615 }
b20359f5
JA
1616 if (ret == -RTCP_BYE) {
1617 rt->nb_byes++;
1618
1619 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1620 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1621
1622 if (rt->nb_byes == rt->nb_rtsp_streams)
1623 return AVERROR_EOF;
1624 }
2cab6b48
MS
1625 }
1626 }
321259c1 1627end:
0e59034e
RB
1628 if (ret < 0)
1629 goto redo;
c8965800 1630 if (ret == 1)
0e59034e
RB
1631 /* more packets may follow, so we save the RTP context */
1632 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1633
1634 return ret;
1635}
44b70ce5 1636#endif /* CONFIG_RTPDEC */
0e59034e 1637
44b70ce5 1638#if CONFIG_SDP_DEMUXER
cb1fdc61 1639static int sdp_probe(AVProbeData *p1)
93ced3e8 1640{
0e1ceacd 1641 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1642
3fbd12d1 1643 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1644 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1645 if (p + sizeof("c=IN IP") - 1 < p_end &&
1646 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1647 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1648
c8965800 1649 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1650 if (++p >= p_end)
cb1fdc61 1651 break;
cb1fdc61
FB
1652 if (*p == '\r')
1653 p++;
1654 }
93ced3e8
FB
1655 return 0;
1656}
1657
c8965800 1658static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1659{
8b1ab7bf 1660 RTSPState *rt = s->priv_data;
93ced3e8
FB
1661 RTSPStream *rtsp_st;
1662 int size, i, err;
1663 char *content;
1664 char url[1024];
1665
57b5555c
MS
1666 if (!ff_network_init())
1667 return AVERROR(EIO);
1668
93ced3e8
FB
1669 /* read the whole sdp file */
1670 /* XXX: better loading */
1671 content = av_malloc(SDP_MAX_SIZE);
899681cd 1672 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1673 if (size <= 0) {
1674 av_free(content);
1675 return AVERROR_INVALIDDATA;
1676 }
1677 content[size] ='\0';
1678
0526c6f7 1679 ff_sdp_parse(s, content);
93ced3e8
FB
1680 av_free(content);
1681
1682 /* open each RTP stream */
c8965800 1683 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1684 char namebuf[50];
8b1ab7bf 1685 rtsp_st = rt->rtsp_streams[i];
115329f1 1686
3fbd12d1
MS
1687 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1688 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1689 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1690 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1691 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1692 rtsp_st->sdp_ttl);
dbf30963 1693 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1694 err = AVERROR_INVALIDDATA;
1695 goto fail;
1696 }
ee0cb67f 1697 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1698 goto fail;
93ced3e8
FB
1699 }
1700 return 0;
c8965800 1701fail:
3307e6ea 1702 ff_rtsp_close_streams(s);
57b5555c 1703 ff_network_close();
93ced3e8
FB
1704 return err;
1705}
1706
93ced3e8
FB
1707static int sdp_read_close(AVFormatContext *s)
1708{
3307e6ea 1709 ff_rtsp_close_streams(s);
57b5555c 1710 ff_network_close();
93ced3e8
FB
1711 return 0;
1712}
1713
ff70e601 1714AVInputFormat sdp_demuxer = {
93ced3e8 1715 "sdp",
bde15e74 1716 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1717 sizeof(RTSPState),
1718 sdp_probe,
1719 sdp_read_header,
0526c6f7 1720 ff_rtsp_fetch_packet,
93ced3e8
FB
1721 sdp_read_close,
1722};
44b70ce5 1723#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1724
44b70ce5 1725#if CONFIG_RTP_DEMUXER
44594cc7
MS
1726static int rtp_probe(AVProbeData *p)
1727{
1728 if (av_strstart(p->filename, "rtp:", NULL))
1729 return AVPROBE_SCORE_MAX;
1730 return 0;
1731}
1732
1733static int rtp_read_header(AVFormatContext *s,
1734 AVFormatParameters *ap)
1735{
1736 uint8_t recvbuf[1500];
1737 char host[500], sdp[500];
1738 int ret, port;
1739 URLContext* in = NULL;
1740 int payload_type;
1741 AVCodecContext codec;
1742 struct sockaddr_storage addr;
1743 ByteIOContext pb;
1744 socklen_t addrlen = sizeof(addr);
1745
1746 if (!ff_network_init())
1747 return AVERROR(EIO);
1748
1749 ret = url_open(&in, s->filename, URL_RDONLY);
1750 if (ret)
1751 goto fail;
1752
1753 while (1) {
1754 ret = url_read(in, recvbuf, sizeof(recvbuf));
1755 if (ret == AVERROR(EAGAIN))
1756 continue;
1757 if (ret < 0)
1758 goto fail;
1759 if (ret < 12) {
1760 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1761 continue;
1762 }
1763
1764 if ((recvbuf[0] & 0xc0) != 0x80) {
1765 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1766 "received\n");
1767 continue;
1768 }
1769
1770 payload_type = recvbuf[1] & 0x7f;
1771 break;
1772 }
1773 getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
1774 url_close(in);
1775 in = NULL;
1776
1777 memset(&codec, 0, sizeof(codec));
1778 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1779 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1780 "without an SDP file describing it\n",
1781 payload_type);
1782 goto fail;
1783 }
1784 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1785 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1786 "properly you need an SDP file "
1787 "describing it\n");
1788 }
1789
1790 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1791 NULL, 0, s->filename);
1792
1793 snprintf(sdp, sizeof(sdp),
1794 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1795 addr.ss_family == AF_INET ? 4 : 6, host,
1796 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1797 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1798 port, payload_type);
1799 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1800
1801 init_put_byte(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
1802 s->pb = &pb;
1803
1804 /* sdp_read_header initializes this again */
1805 ff_network_close();
1806
1807 ret = sdp_read_header(s, ap);
1808 s->pb = NULL;
1809 return ret;
1810
1811fail:
1812 if (in)
1813 url_close(in);
1814 ff_network_close();
1815 return ret;
1816}
1817
1818AVInputFormat rtp_demuxer = {
1819 "rtp",
1820 NULL_IF_CONFIG_SMALL("RTP input format"),
1821 sizeof(RTSPState),
1822 rtp_probe,
1823 rtp_read_header,
0526c6f7 1824 ff_rtsp_fetch_packet,
44594cc7
MS
1825 sdp_read_close,
1826 .flags = AVFMT_NOFILE,
1827};
44b70ce5 1828#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1829