rtsp: Make rtsp_rtp_mux_open reusable
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
1617ad97
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
1617ad97 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
1617ad97
FB
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1617ad97 20 */
245976da 21
f9337897 22#include "libavutil/base64.h"
245976da 23#include "libavutil/avstring.h"
6a5d31ac 24#include "libavutil/intreadwrite.h"
f5d33f52 25#include "libavutil/random_seed.h"
1617ad97
FB
26#include "avformat.h"
27
db0ed93e 28#include <sys/time.h>
b250f9c6 29#if HAVE_SYS_SELECT_H
933bd8e2 30#include <sys/select.h>
6ad1c9c9 31#endif
ea452b54 32#include <strings.h>
e4a9e3cc 33#include "internal.h"
42572ef5 34#include "network.h"
cbfa66d0 35#include "os_support.h"
f5d33f52 36#include "http.h"
c971ff19 37#include "rtsp.h"
1617ad97 38
302879cb 39#include "rtpdec.h"
e9dea59f 40#include "rdt.h"
965a3ddb 41#include "rtpdec_formats.h"
4934884a 42
1617ad97 43//#define DEBUG
b6892136 44//#define DEBUG_RTP_TCP
1617ad97 45
c482500f 46#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 47int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 48#endif
85fb7b34 49
c2bfd816 50/* Timeout values for socket select, in ms,
9cba6f5f
SG
51 * and read_packet(), in seconds */
52#define SELECT_TIMEOUT_MS 100
53#define READ_PACKET_TIMEOUT_S 10
54#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / SELECT_TIMEOUT_MS
91af5601 55#define SDP_MAX_SIZE 16384
96a7c975 56#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
9cba6f5f 57
1ef36a70
RB
58static void get_word_until_chars(char *buf, int buf_size,
59 const char *sep, const char **pp)
1617ad97
FB
60{
61 const char *p;
62 char *q;
63
64 p = *pp;
30619e6e 65 p += strspn(p, SPACE_CHARS);
1617ad97
FB
66 q = buf;
67 while (!strchr(sep, *p) && *p != '\0') {
68 if ((q - buf) < buf_size - 1)
69 *q++ = *p;
70 p++;
71 }
72 if (buf_size > 0)
73 *q = '\0';
74 *pp = p;
75}
76
1ef36a70
RB
77static void get_word_sep(char *buf, int buf_size, const char *sep,
78 const char **pp)
1617ad97 79{
1ef36a70
RB
80 if (**pp == '/') (*pp)++;
81 get_word_until_chars(buf, buf_size, sep, pp);
82}
1617ad97 83
1ef36a70
RB
84static void get_word(char *buf, int buf_size, const char **pp)
85{
86 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
87}
88
c8965800 89/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3
RB
90static int sdp_parse_rtpmap(AVFormatContext *s,
91 AVCodecContext *codec, RTSPStream *rtsp_st,
c8965800 92 int payload_type, const char *p)
93ced3e8
FB
93{
94 char buf[256];
d1ccf0e0
RD
95 int i;
96 AVCodec *c;
7b49ce2e 97 const char *c_name;
93ced3e8 98
d1ccf0e0 99 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
100 * see if we can handle this kind of payload.
101 * The space should normally not be there but some Real streams or
102 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
103 * have a trailing space. */
104 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 105 if (payload_type >= RTP_PT_PRIVATE) {
c8965800
RB
106 RTPDynamicProtocolHandler *handler;
107 for (handler = RTPFirstDynamicPayloadHandler;
108 handler; handler = handler->next) {
109 if (!strcasecmp(buf, handler->enc_name) &&
110 codec->codec_type == handler->codec_type) {
111 codec->codec_id = handler->codec_id;
112 rtsp_st->dynamic_handler = handler;
113 if (handler->open)
114 rtsp_st->dynamic_protocol_context = handler->open();
d1ccf0e0
RD
115 break;
116 }
4934884a 117 }
160918d5
MS
118 /* If no dynamic handler was found, check with the list of standard
119 * allocated types, if such a stream for some reason happens to
120 * use a private payload type. This isn't handled in rtpdec.c, since
121 * the format name from the rtpmap line never is passed into rtpdec. */
122 if (!rtsp_st->dynamic_handler)
123 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 124 } else {
c8965800
RB
125 /* We are in a standard case
126 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 127 /* search into AVRtpPayloadTypes[] */
7ed19d7f 128 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
129 }
130
131 c = avcodec_find_decoder(codec->codec_id);
132 if (c && c->name)
7b49ce2e 133 c_name = c->name;
d1ccf0e0 134 else
170870b7 135 c_name = "(null)";
d1ccf0e0 136
7515ed0c
RB
137 get_word_sep(buf, sizeof(buf), "/", &p);
138 i = atoi(buf);
139 switch (codec->codec_type) {
72415b2a 140 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
141 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
142 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
143 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
144 if (i > 0) {
145 codec->sample_rate = i;
146 get_word_sep(buf, sizeof(buf), "/", &p);
147 i = atoi(buf);
148 if (i > 0)
149 codec->channels = i;
150 // TODO: there is a bug here; if it is a mono stream, and
151 // less than 22000Hz, faad upconverts to stereo and twice
152 // the frequency. No problem, but the sample rate is being
153 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 154 }
7515ed0c
RB
155 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
156 codec->sample_rate);
157 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
158 codec->channels);
159 break;
72415b2a 160 case AVMEDIA_TYPE_VIDEO:
7515ed0c
RB
161 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
162 break;
163 default:
164 break;
165 }
166 return 0;
93ced3e8
FB
167}
168
c2bfd816 169/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
170 * is broken out as a function because it is used in rtp_h264.c, which is
171 * forthcoming. */
3307e6ea 172int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 173 char *value, int value_size)
d0deedcb 174{
30619e6e 175 *p += strspn(*p, SPACE_CHARS);
c8965800 176 if (**p) {
d0deedcb
RM
177 get_word_sep(attr, attr_size, "=", p);
178 if (**p == '=')
179 (*p)++;
180 get_word_sep(value, value_size, ";", p);
181 if (**p == ';')
182 (*p)++;
183 return 1;
184 }
185 return 0;
186}
187
debe86bf 188/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
31693e00
RM
189 * and end time.
190 * Used for seeking in the rtp stream.
191 */
192static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
193{
194 char buf[256];
195
30619e6e 196 p += strspn(p, SPACE_CHARS);
f7d78f36 197 if (!av_stristart(p, "npt=", &p))
31693e00
RM
198 return;
199
200 *start = AV_NOPTS_VALUE;
201 *end = AV_NOPTS_VALUE;
202
203 get_word_sep(buf, sizeof(buf), "-", &p);
204 *start = parse_date(buf, 1);
205 if (*p == '-') {
206 p++;
207 get_word_sep(buf, sizeof(buf), "-", &p);
208 *end = parse_date(buf, 1);
209 }
210// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
211// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
212}
213
3fbd12d1
MS
214static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
215{
216 struct addrinfo hints, *ai = NULL;
217 memset(&hints, 0, sizeof(hints));
218 hints.ai_flags = AI_NUMERICHOST;
219 if (getaddrinfo(buf, NULL, &hints, &ai))
220 return -1;
221 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
222 freeaddrinfo(ai);
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) {
8b1ab7bf 329 /* if standard payload type, we can find the codec right now */
bf6d9818 330 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
331 }
332 }
1617ad97 333 /* put a default control url */
00eb13e0 334 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 335 sizeof(rtsp_st->control_url));
1617ad97
FB
336 break;
337 case 'a':
00eb13e0
AS
338 if (av_strstart(p, "control:", &p)) {
339 if (s->nb_streams == 0) {
340 if (!strncmp(p, "rtsp://", 7))
341 av_strlcpy(rt->control_uri, p,
342 sizeof(rt->control_uri));
343 } else {
1617ad97
FB
344 char proto[32];
345 /* get the control url */
346 st = s->streams[s->nb_streams - 1];
347 rtsp_st = st->priv_data;
115329f1 348
1617ad97 349 /* XXX: may need to add full url resolution */
f3bfe388 350 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
f984dcf6 351 NULL, NULL, 0, p);
1617ad97
FB
352 if (proto[0] == '\0') {
353 /* relative control URL */
00eb13e0 354 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
c8965800
RB
355 av_strlcat(rtsp_st->control_url, "/",
356 sizeof(rtsp_st->control_url));
357 av_strlcat(rtsp_st->control_url, p,
358 sizeof(rtsp_st->control_url));
359 } else
360 av_strlcpy(rtsp_st->control_url, p,
361 sizeof(rtsp_st->control_url));
00eb13e0 362 }
83d14c85 363 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 364 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 365 get_word(buf1, sizeof(buf1), &p);
93ced3e8 366 payload_type = atoi(buf1);
83d14c85 367 st = s->streams[s->nb_streams - 1];
ff16f551 368 rtsp_st = st->priv_data;
8f3c87f3 369 sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p);
7fc8ac7f
JA
370 } else if (av_strstart(p, "fmtp:", &p) ||
371 av_strstart(p, "framesize:", &p)) {
93ced3e8 372 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
373 // let dynamic protocol handlers have a stab at the line.
374 get_word(buf1, sizeof(buf1), &p);
375 payload_type = atoi(buf1);
c8965800
RB
376 for (i = 0; i < s->nb_streams; i++) {
377 st = s->streams[i];
d0deedcb 378 rtsp_st = st->priv_data;
c8965800
RB
379 if (rtsp_st->sdp_payload_type == payload_type &&
380 rtsp_st->dynamic_handler &&
381 rtsp_st->dynamic_handler->parse_sdp_a_line)
382 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
383 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 384 }
c8965800 385 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
386 int64_t start, end;
387
388 // this is so that seeking on a streamed file can work.
389 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
390 s->start_time = start;
391 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
392 s->duration = (end == AV_NOPTS_VALUE) ?
393 AV_NOPTS_VALUE : end - start;
119b4668
RB
394 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
395 if (atoi(p) == 1)
396 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
397 } else {
398 if (rt->server_type == RTSP_SERVER_WMS)
399 ff_wms_parse_sdp_a_line(s, p);
400 if (s->nb_streams > 0) {
c4a3d032
RB
401 if (rt->server_type == RTSP_SERVER_REAL)
402 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
403
404 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
405 if (rtsp_st->dynamic_handler &&
406 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
407 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
408 s->nb_streams - 1,
c4a3d032 409 rtsp_st->dynamic_protocol_context, buf);
1a30d541 410 }
1617ad97
FB
411 }
412 break;
413 }
414}
415
5c91a675 416static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
417{
418 const char *p;
419 int letter;
9211bcdd
RB
420 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
421 * contain long SDP lines containing complete ASF Headers (several
422 * kB) or arrays of MDPR (RM stream descriptor) headers plus
423 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
424 * buffer is large.
425 *
afcea58c
JA
426 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
427 * in rtpdec_xiph.c. */
373afbaf 428 char buf[16384], *q;
93ced3e8 429 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 430
93ced3e8 431 memset(s1, 0, sizeof(SDPParseState));
1617ad97 432 p = content;
c8965800 433 for (;;) {
30619e6e 434 p += strspn(p, SPACE_CHARS);
1617ad97
FB
435 letter = *p;
436 if (letter == '\0')
437 break;
438 p++;
439 if (*p != '=')
440 goto next_line;
441 p++;
442 /* get the content */
443 q = buf;
b6892136 444 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
445 if ((q - buf) < sizeof(buf) - 1)
446 *q++ = *p;
447 p++;
448 }
449 *q = '\0';
93ced3e8 450 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
451 next_line:
452 while (*p != '\n' && *p != '\0')
453 p++;
454 if (*p == '\n')
455 p++;
456 }
457 return 0;
458}
459
1ced9da3 460/* close and free RTSP streams */
3307e6ea 461void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 462{
52aa4338 463 RTSPState *rt = s->priv_data;
1ced9da3
LA
464 int i;
465 RTSPStream *rtsp_st;
466
c8965800 467 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
468 rtsp_st = rt->rtsp_streams[i];
469 if (rtsp_st) {
470 if (rtsp_st->transport_priv) {
fd450a51
MS
471 if (s->oformat) {
472 AVFormatContext *rtpctx = rtsp_st->transport_priv;
473 av_write_trailer(rtpctx);
b7dc88fc
MS
474 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
475 uint8_t *ptr;
476 url_close_dyn_buf(rtpctx->pb, &ptr);
477 av_free(ptr);
478 } else {
685e76b5 479 url_fclose(rtpctx->pb);
b7dc88fc 480 }
f86f6656
MS
481 av_metadata_free(&rtpctx->streams[0]->metadata);
482 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
483 av_free(rtpctx->streams[0]);
484 av_free(rtpctx);
485 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
486 ff_rdt_parse_close(rtsp_st->transport_priv);
487 else
488 rtp_parse_close(rtsp_st->transport_priv);
489 }
490 if (rtsp_st->rtp_handle)
491 url_close(rtsp_st->rtp_handle);
492 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
493 rtsp_st->dynamic_handler->close(
494 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
495 }
496 }
497 av_free(rt->rtsp_streams);
498 if (rt->asf_ctx) {
499 av_close_input_stream (rt->asf_ctx);
500 rt->asf_ctx = NULL;
501 }
96a7c975 502 av_free(rt->recvbuf);
1ced9da3
LA
503}
504
3d742230
MS
505static AVFormatContext *rtsp_rtp_mux_open(AVFormatContext *s, AVStream *st,
506 URLContext *handle, int packet_size)
5c7fd910 507{
fd450a51
MS
508 AVFormatContext *rtpctx;
509 int ret;
510 AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
511
512 if (!rtp_format)
513 return NULL;
514
515 /* Allocate an AVFormatContext for each output stream */
516 rtpctx = avformat_alloc_context();
517 if (!rtpctx)
518 return NULL;
519
520 rtpctx->oformat = rtp_format;
521 if (!av_new_stream(rtpctx, 0)) {
522 av_free(rtpctx);
523 return NULL;
524 }
525 /* Copy the max delay setting; the rtp muxer reads this. */
526 rtpctx->max_delay = s->max_delay;
527 /* Copy other stream parameters. */
528 rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
529
c07c6f81 530 /* Set the synchronized start time. */
9e6acc78 531 rtpctx->start_time_realtime = s->start_time_realtime;
c07c6f81 532
fd450a51
MS
533 /* Remove the local codec, link to the original codec
534 * context instead, to give the rtp muxer access to
535 * codec parameters. */
536 av_free(rtpctx->streams[0]->codec);
537 rtpctx->streams[0]->codec = st->codec;
538
b7dc88fc 539 if (handle) {
685e76b5 540 url_fdopen(&rtpctx->pb, handle);
b7dc88fc 541 } else
3d742230 542 url_open_dyn_packet_buf(&rtpctx->pb, packet_size);
fd450a51
MS
543 ret = av_write_header(rtpctx);
544
545 if (ret) {
b7dc88fc 546 if (handle) {
685e76b5 547 url_fclose(rtpctx->pb);
b7dc88fc
MS
548 } else {
549 uint8_t *ptr;
550 url_close_dyn_buf(rtpctx->pb, &ptr);
551 av_free(ptr);
552 }
fd450a51
MS
553 av_free(rtpctx->streams[0]);
554 av_free(rtpctx);
555 return NULL;
556 }
557
558 /* Copy the RTP AVStream timebase back to the original AVStream */
559 st->time_base = rtpctx->streams[0]->time_base;
560 return rtpctx;
561}
562
c8965800 563static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
564{
565 RTSPState *rt = s->priv_data;
566 AVStream *st = NULL;
567
568 /* open the RTP context */
569 if (rtsp_st->stream_index >= 0)
570 st = s->streams[rtsp_st->stream_index];
571 if (!st)
572 s->ctx_flags |= AVFMTCTX_NOHEADER;
573
fd450a51 574 if (s->oformat) {
3d742230
MS
575 rtsp_st->transport_priv = rtsp_rtp_mux_open(s, st, rtsp_st->rtp_handle,
576 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 577 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51
MS
578 rtsp_st->rtp_handle = NULL;
579 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
580 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
581 rtsp_st->dynamic_protocol_context,
582 rtsp_st->dynamic_handler);
583 else
584 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
585 rtsp_st->sdp_payload_type,
586 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
587 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
588
589 if (!rtsp_st->transport_priv) {
590 return AVERROR(ENOMEM);
591 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
c8965800 592 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
593 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
594 rtsp_st->dynamic_protocol_context,
595 rtsp_st->dynamic_handler);
596 }
597 }
598
599 return 0;
600}
601
6f5a3d0a 602#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1ced9da3
LA
603static int rtsp_probe(AVProbeData *p)
604{
605 if (av_strstart(p->filename, "rtsp:", NULL))
606 return AVPROBE_SCORE_MAX;
607 return 0;
608}
609
1617ad97
FB
610static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
611{
612 const char *p;
613 int v;
614
615 p = *pp;
30619e6e 616 p += strspn(p, SPACE_CHARS);
1617ad97
FB
617 v = strtol(p, (char **)&p, 10);
618 if (*p == '-') {
619 p++;
620 *min_ptr = v;
621 v = strtol(p, (char **)&p, 10);
622 *max_ptr = v;
623 } else {
624 *min_ptr = v;
625 *max_ptr = v;
626 }
627 *pp = p;
628}
629
630/* XXX: only one transport specification is parsed */
a9e534d5 631static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
632{
633 char transport_protocol[16];
634 char profile[16];
635 char lower_transport[16];
636 char parameter[16];
637 RTSPTransportField *th;
638 char buf[256];
115329f1 639
1617ad97 640 reply->nb_transports = 0;
115329f1 641
c8965800 642 for (;;) {
30619e6e 643 p += strspn(p, SPACE_CHARS);
1617ad97
FB
644 if (*p == '\0')
645 break;
646
647 th = &reply->transports[reply->nb_transports];
648
115329f1 649 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 650 "/", &p);
e1502118 651 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
652 get_word_sep(profile, sizeof(profile), "/;,", &p);
653 lower_transport[0] = '\0';
654 /* rtp/avp/<protocol> */
655 if (*p == '/') {
7ecc634e
LB
656 get_word_sep(lower_transport, sizeof(lower_transport),
657 ";,", &p);
119b4668
RB
658 }
659 th->transport = RTSP_TRANSPORT_RTP;
660 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
661 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 662 /* x-pn-tng/<protocol> */
e1502118
LB
663 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
664 profile[0] = '\0';
119b4668 665 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 666 }
b6892136 667 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 668 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 669 else
90abbdba 670 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 671
1617ad97
FB
672 if (*p == ';')
673 p++;
674 /* get each parameter */
675 while (*p != '\0' && *p != ',') {
676 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
677 if (!strcmp(parameter, "port")) {
678 if (*p == '=') {
679 p++;
680 rtsp_parse_range(&th->port_min, &th->port_max, &p);
681 }
682 } else if (!strcmp(parameter, "client_port")) {
683 if (*p == '=') {
684 p++;
115329f1 685 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
686 &th->client_port_max, &p);
687 }
688 } else if (!strcmp(parameter, "server_port")) {
689 if (*p == '=') {
690 p++;
115329f1 691 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
692 &th->server_port_max, &p);
693 }
694 } else if (!strcmp(parameter, "interleaved")) {
695 if (*p == '=') {
696 p++;
115329f1 697 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
698 &th->interleaved_max, &p);
699 }
700 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
701 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
702 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
703 } else if (!strcmp(parameter, "ttl")) {
704 if (*p == '=') {
705 p++;
706 th->ttl = strtol(p, (char **)&p, 10);
707 }
708 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
709 if (*p == '=') {
710 p++;
711 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 712 get_sockaddr(buf, &th->destination);
1617ad97 713 }
619298a8
JW
714 } else if (!strcmp(parameter, "source")) {
715 if (*p == '=') {
716 p++;
717 get_word_sep(buf, sizeof(buf), ";,", &p);
718 av_strlcpy(th->source, buf, sizeof(th->source));
719 }
1617ad97 720 }
619298a8 721
1617ad97
FB
722 while (*p != ';' && *p != '\0' && *p != ',')
723 p++;
724 if (*p == ';')
725 p++;
726 }
727 if (*p == ',')
728 p++;
729
730 reply->nb_transports++;
731 }
732}
733
2626308a
MS
734void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
735 HTTPAuthState *auth_state)
1617ad97
FB
736{
737 const char *p;
738
739 /* NOTE: we do case independent match for broken servers */
740 p = buf;
f7d78f36 741 if (av_stristart(p, "Session:", &p)) {
30e79845 742 int t;
1617ad97 743 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
744 if (av_stristart(p, ";timeout=", &p) &&
745 (t = strtol(p, NULL, 10)) > 0) {
746 reply->timeout = t;
747 }
f7d78f36 748 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 749 reply->content_length = strtol(p, NULL, 10);
f7d78f36 750 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 751 rtsp_parse_transport(reply, p);
f7d78f36 752 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 753 reply->seq = strtol(p, NULL, 10);
f7d78f36 754 } else if (av_stristart(p, "Range:", &p)) {
31693e00 755 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 756 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 757 p += strspn(p, SPACE_CHARS);
30aa6aed 758 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 759 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 760 p += strspn(p, SPACE_CHARS);
7a86bafa 761 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
762 } else if (av_stristart(p, "Notice:", &p) ||
763 av_stristart(p, "X-Notice:", &p)) {
764 reply->notice = strtol(p, NULL, 10);
d243ba30 765 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 766 p += strspn(p, SPACE_CHARS);
d243ba30 767 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a 768 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
30619e6e 769 p += strspn(p, SPACE_CHARS);
2626308a
MS
770 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
771 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
30619e6e 772 p += strspn(p, SPACE_CHARS);
2626308a 773 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
1617ad97
FB
774 }
775}
776
b7b8fc34 777/* skip a RTP/TCP interleaved packet */
ec55edba 778void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
779{
780 RTSPState *rt = s->priv_data;
781 int ret, len, len1;
782 uint8_t buf[1024];
783
0e848977 784 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
785 if (ret != 3)
786 return;
80fb8234 787 len = AV_RB16(buf + 1);
67c9cd69
BC
788
789 dprintf(s, "skipping RTP packet len=%d\n", len);
790
b7b8fc34
FB
791 /* skip payload */
792 while (len > 0) {
793 len1 = len;
794 if (len1 > sizeof(buf))
795 len1 = sizeof(buf);
0e848977 796 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
797 if (ret != len1)
798 return;
799 len -= len1;
800 }
801}
1617ad97 802
3307e6ea 803int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
804 unsigned char **content_ptr,
805 int return_on_interleaved_data)
1617ad97
FB
806{
807 RTSPState *rt = s->priv_data;
808 char buf[4096], buf1[1024], *q;
809 unsigned char ch;
810 const char *p;
7e726132 811 int ret, content_length, line_count = 0;
1617ad97
FB
812 unsigned char *content = NULL;
813
d541a7d2 814 memset(reply, 0, sizeof(*reply));
1617ad97 815
1617ad97 816 /* parse reply (XXX: use buffers) */
1617ad97 817 rt->last_reply[0] = '\0';
c8965800 818 for (;;) {
1617ad97 819 q = buf;
c8965800 820 for (;;) {
0e848977 821 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 822#ifdef DEBUG_RTP_TCP
67c9cd69 823 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
824#endif
825 if (ret != 1)
2401660d 826 return AVERROR_EOF;
1617ad97
FB
827 if (ch == '\n')
828 break;
b7b8fc34
FB
829 if (ch == '$') {
830 /* XXX: only parse it if first char on line ? */
7e726132
RB
831 if (return_on_interleaved_data) {
832 return 1;
833 } else
ec55edba 834 ff_rtsp_skip_packet(s);
b7b8fc34 835 } else if (ch != '\r') {
1617ad97
FB
836 if ((q - buf) < sizeof(buf) - 1)
837 *q++ = ch;
838 }
839 }
840 *q = '\0';
67c9cd69
BC
841
842 dprintf(s, "line='%s'\n", buf);
843
1617ad97
FB
844 /* test if last line */
845 if (buf[0] == '\0')
846 break;
847 p = buf;
848 if (line_count == 0) {
849 /* get reply code */
850 get_word(buf1, sizeof(buf1), &p);
851 get_word(buf1, sizeof(buf1), &p);
852 reply->status_code = atoi(buf1);
d93fdcbf 853 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 854 } else {
2626308a 855 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
856 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
857 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
858 }
859 line_count++;
860 }
115329f1 861
1617ad97 862 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 863 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 864
1617ad97
FB
865 content_length = reply->content_length;
866 if (content_length > 0) {
867 /* leave some room for a trailing '\0' (useful for simple parsing) */
868 content = av_malloc(content_length + 1);
0e848977 869 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
870 content[content_length] = '\0';
871 }
872 if (content_ptr)
873 *content_ptr = content;
e2e2e7dd
AB
874 else
875 av_free(content);
7e726132 876
7ed8211b
LB
877 if (rt->seq != reply->seq) {
878 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
879 rt->seq, reply->seq);
880 }
881
fccb1770
RB
882 /* EOS */
883 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
884 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 885 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 886 rt->state = RTSP_STATE_IDLE;
c8965800 887 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 888 return AVERROR(EIO); /* data or server error */
c8965800 889 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
890 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
891 return AVERROR(EPERM);
892
7e726132 893 return 0;
1617ad97
FB
894}
895
d0382374 896int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
897 const char *method, const char *url,
898 const char *headers,
899 const unsigned char *send_content,
900 int send_content_length)
29b9f58b
RB
901{
902 RTSPState *rt = s->priv_data;
f5d33f52
JA
903 char buf[4096], *out_buf;
904 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 905
f5d33f52
JA
906 /* Add in RTSP headers */
907 out_buf = buf;
29b9f58b 908 rt->seq++;
b17d11c6
MS
909 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
910 if (headers)
911 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 912 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
913 if (rt->session_id[0] != '\0' && (!headers ||
914 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 915 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 916 }
aa8bf2fb
MS
917 if (rt->auth[0]) {
918 char *str = ff_http_auth_create_response(&rt->auth_state,
919 rt->auth, url, method);
920 if (str)
921 av_strlcat(buf, str, sizeof(buf));
922 av_free(str);
923 }
dfd017bf
MS
924 if (send_content_length > 0 && send_content)
925 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 926 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 927
f5d33f52
JA
928 /* base64 encode rtsp if tunneling */
929 if (rt->control_transport == RTSP_MODE_TUNNEL) {
930 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
931 out_buf = base64buf;
932 }
933
67c9cd69
BC
934 dprintf(s, "Sending:\n%s--\n", buf);
935
f5d33f52
JA
936 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
937 if (send_content_length > 0 && send_content) {
938 if (rt->control_transport == RTSP_MODE_TUNNEL) {
939 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
940 "with content data not supported\n");
941 return AVERROR_PATCHWELCOME;
942 }
b8c2c41d 943 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 944 }
30e79845 945 rt->last_cmd_time = av_gettime();
d0382374
JA
946
947 return 0;
30e79845
RB
948}
949
d0382374 950int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 951 const char *url, const char *headers)
dfd017bf 952{
d0382374 953 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
954}
955
d0382374 956int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
957 const char *headers, RTSPMessageHeader *reply,
958 unsigned char **content_ptr)
30e79845 959{
d0382374 960 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 961 content_ptr, NULL, 0);
29b9f58b
RB
962}
963
d0382374 964int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
965 const char *method, const char *url,
966 const char *header,
967 RTSPMessageHeader *reply,
968 unsigned char **content_ptr,
969 const unsigned char *send_content,
970 int send_content_length)
dfd017bf 971{
30af0779
MS
972 RTSPState *rt = s->priv_data;
973 HTTPAuthType cur_auth_type;
d0382374 974 int ret;
30af0779
MS
975
976retry:
977 cur_auth_type = rt->auth_state.auth_type;
d0382374 978 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
979 send_content,
980 send_content_length)))
d0382374 981 return ret;
dfd017bf 982
d0382374
JA
983 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
984 return ret;
30af0779
MS
985
986 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
987 rt->auth_state.auth_type != HTTP_AUTH_NONE)
988 goto retry;
d0382374 989
bf55cf19 990 if (reply->status_code > 400){
d93fdcbf 991 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 992 method,
d93fdcbf
LB
993 reply->status_code,
994 reply->reason);
bf55cf19
LB
995 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
996 }
997
d0382374 998 return 0;
dfd017bf
MS
999}
1000
53620bba 1001/**
32e543f8 1002 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 1003 */
c8965800
RB
1004static int make_setup_request(AVFormatContext *s, const char *host, int port,
1005 int lower_transport, const char *real_challenge)
1617ad97
FB
1006{
1007 RTSPState *rt = s->priv_data;
f830c9a4 1008 int rtx, j, i, err, interleave = 0;
1617ad97 1009 RTSPStream *rtsp_st;
a9e534d5 1010 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1011 char cmd[2048];
e9dea59f
RB
1012 const char *trans_pref;
1013
119b4668 1014 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1015 trans_pref = "x-pn-tng";
1016 else
1017 trans_pref = "RTP/AVP";
115329f1 1018
30e79845
RB
1019 /* default timeout: 1 minute */
1020 rt->timeout = 60;
1021
1617ad97
FB
1022 /* for each stream, make the setup request */
1023 /* XXX: we assume the same server is used for the control of each
c8965800 1024 * RTSP stream */
d1ccf0e0 1025
c8965800 1026 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1027 char transport[2048];
1028
f830c9a4
RB
1029 /**
1030 * WMS serves all UDP data over a single connection, the RTX, which
1031 * isn't necessarily the first in the SDP but has to be the first
1032 * to be set up, else the second/third SETUP will fail with a 461.
1033 */
1034 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1035 rt->server_type == RTSP_SERVER_WMS) {
1036 if (i == 0) {
1037 /* rtx first */
1038 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1039 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1040 if (len >= 4 &&
c8965800
RB
1041 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1042 "/rtx"))
f830c9a4
RB
1043 break;
1044 }
1045 if (rtx == rt->nb_rtsp_streams)
1046 return -1; /* no RTX found */
1047 rtsp_st = rt->rtsp_streams[rtx];
1048 } else
1049 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1050 } else
2fea9650 1051 rtsp_st = rt->rtsp_streams[i];
1617ad97 1052
1617ad97 1053 /* RTP/UDP */
90abbdba 1054 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1055 char buf[256];
85fb7b34 1056
f830c9a4
RB
1057 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1058 port = reply->transports[0].client_port_min;
1059 goto have_port;
1060 }
1061
85fb7b34 1062 /* first try in specified port range */
d1ccf0e0 1063 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1064 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1065 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1066 "?localport=%d", j);
c8965800
RB
1067 /* we will use two ports per rtp stream (rtp and rtcp) */
1068 j += 2;
1069 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1070 goto rtp_opened;
1071 }
1617ad97 1072 }
85fb7b34 1073
c8965800
RB
1074#if 0
1075 /* then try on any port */
1076 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1077 err = AVERROR_INVALIDDATA;
1078 goto fail;
1079 }
1080#endif
85fb7b34
FB
1081
1082 rtp_opened:
8b1ab7bf 1083 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1084 have_port:
0ad306bc 1085 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1086 "%s/UDP;", trans_pref);
1087 if (rt->server_type != RTSP_SERVER_REAL)
1088 av_strlcat(transport, "unicast;", sizeof(transport));
1089 av_strlcatf(transport, sizeof(transport),
1090 "client_port=%d", port);
f830c9a4
RB
1091 if (rt->transport == RTSP_TRANSPORT_RTP &&
1092 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1093 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1094 }
1095
1096 /* RTP/TCP */
90abbdba 1097 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1098 /** For WMS streams, the application streams are only used for
1099 * UDP. When trying to set it up for TCP streams, the server
1100 * will return an error. Therefore, we skip those streams. */
1101 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1102 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1103 AVMEDIA_TYPE_DATA)
090438cc 1104 continue;
0ad306bc 1105 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1106 "%s/TCP;", trans_pref);
1107 if (rt->server_type == RTSP_SERVER_WMS)
1108 av_strlcat(transport, "unicast;", sizeof(transport));
1109 av_strlcatf(transport, sizeof(transport),
1110 "interleaved=%d-%d",
1111 interleave, interleave + 1);
1112 interleave += 2;
1617ad97
FB
1113 }
1114
90abbdba 1115 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1116 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1117 "%s/UDP;multicast", trans_pref);
1617ad97 1118 }
69adcc4f
MS
1119 if (s->oformat) {
1120 av_strlcat(transport, ";mode=receive", sizeof(transport));
1121 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1122 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1123 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1124 snprintf(cmd, sizeof(cmd),
b6892136 1125 "Transport: %s\r\n",
b17d11c6 1126 transport);
2e889ae4 1127 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1128 char real_res[41], real_csum[9];
1129 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1130 real_challenge);
1131 av_strlcatf(cmd, sizeof(cmd),
1132 "If-Match: %s\r\n"
1133 "RealChallenge2: %s, sd=%s\r\n",
1134 rt->session_id, real_res, real_csum);
1135 }
b17d11c6 1136 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1137 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1138 err = 1;
1139 goto fail;
7e6ca34f
RB
1140 } else if (reply->status_code != RTSP_STATUS_OK ||
1141 reply->nb_transports != 1) {
1617ad97
FB
1142 err = AVERROR_INVALIDDATA;
1143 goto fail;
1144 }
1145
1146 /* XXX: same protocol for all streams is required */
1147 if (i > 0) {
119b4668
RB
1148 if (reply->transports[0].lower_transport != rt->lower_transport ||
1149 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1150 err = AVERROR_INVALIDDATA;
1151 goto fail;
1152 }
1153 } else {
90abbdba 1154 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1155 rt->transport = reply->transports[0].transport;
1617ad97
FB
1156 }
1157
2901cc9a 1158 /* close RTP connection if not chosen */
90abbdba
RB
1159 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1160 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1161 url_close(rtsp_st->rtp_handle);
1162 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1163 }
1164
90abbdba
RB
1165 switch(reply->transports[0].lower_transport) {
1166 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1167 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1168 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1169 break;
115329f1 1170
c8965800
RB
1171 case RTSP_LOWER_TRANSPORT_UDP: {
1172 char url[1024];
1173
619298a8
JW
1174 /* Use source address if specified */
1175 if (reply->transports[0].source[0]) {
1176 ff_url_join(url, sizeof(url), "rtp", NULL,
1177 reply->transports[0].source,
1178 reply->transports[0].server_port_min, NULL);
1179 } else {
7bac991f
RB
1180 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1181 reply->transports[0].server_port_min, NULL);
619298a8 1182 }
c8965800
RB
1183 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1184 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1185 err = AVERROR_INVALIDDATA;
1186 goto fail;
1617ad97 1187 }
9c8fa20d
MS
1188 /* Try to initialize the connection state in a
1189 * potential NAT router by sending dummy packets.
1190 * RTP/RTCP dummy packets are used for RDT, too.
1191 */
30ff7c5c 1192 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat)
9c8fa20d 1193 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1194 break;
c8965800
RB
1195 }
1196 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1197 char url[1024], namebuf[50];
1198 struct sockaddr_storage addr;
c8965800
RB
1199 int port, ttl;
1200
7934b15d
MS
1201 if (reply->transports[0].destination.ss_family) {
1202 addr = reply->transports[0].destination;
c8965800
RB
1203 port = reply->transports[0].port_min;
1204 ttl = reply->transports[0].ttl;
1205 } else {
7934b15d 1206 addr = rtsp_st->sdp_ip;
c8965800
RB
1207 port = rtsp_st->sdp_port;
1208 ttl = rtsp_st->sdp_ttl;
1209 }
7934b15d
MS
1210 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1211 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1212 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1213 port, "?ttl=%d", ttl);
c8965800
RB
1214 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1215 err = AVERROR_INVALIDDATA;
1216 goto fail;
1617ad97
FB
1217 }
1218 break;
1219 }
c8965800 1220 }
d1ccf0e0 1221
ee0cb67f 1222 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1223 goto fail;
1617ad97
FB
1224 }
1225
30e79845
RB
1226 if (reply->timeout > 0)
1227 rt->timeout = reply->timeout;
1228
2e889ae4 1229 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1230 rt->need_subscription = 1;
1231
53620bba
RB
1232 return 0;
1233
1234fail:
c8965800 1235 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1236 if (rt->rtsp_streams[i]->rtp_handle) {
1237 url_close(rt->rtsp_streams[i]->rtp_handle);
1238 rt->rtsp_streams[i]->rtp_handle = NULL;
1239 }
1240 }
53620bba
RB
1241 return err;
1242}
1243
1ced9da3
LA
1244static int rtsp_read_play(AVFormatContext *s)
1245{
1246 RTSPState *rt = s->priv_data;
1247 RTSPMessageHeader reply1, *reply = &reply1;
5948f822 1248 int i;
1ced9da3
LA
1249 char cmd[1024];
1250
1251 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
b20359f5 1252 rt->nb_byes = 0;
1ced9da3
LA
1253
1254 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1255 if (rt->state == RTSP_STATE_PAUSED) {
b17d11c6 1256 cmd[0] = 0;
1ced9da3
LA
1257 } else {
1258 snprintf(cmd, sizeof(cmd),
1ced9da3 1259 "Range: npt=%0.3f-\r\n",
1ced9da3
LA
1260 (double)rt->seek_timestamp / AV_TIME_BASE);
1261 }
b17d11c6 1262 ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
1ced9da3
LA
1263 if (reply->status_code != RTSP_STATUS_OK) {
1264 return -1;
1265 }
c690fa97 1266 if (rt->transport == RTSP_TRANSPORT_RTP) {
5948f822
MS
1267 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1268 RTSPStream *rtsp_st = rt->rtsp_streams[i];
1269 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1270 AVStream *st = NULL;
8d168a92
MS
1271 if (!rtpctx)
1272 continue;
5948f822
MS
1273 if (rtsp_st->stream_index >= 0)
1274 st = s->streams[rtsp_st->stream_index];
58ee0991 1275 ff_rtp_reset_packet_queue(rtpctx);
38f8c80b 1276 if (reply->range_start != AV_NOPTS_VALUE) {
c690fa97
MS
1277 rtpctx->last_rtcp_ntp_time = AV_NOPTS_VALUE;
1278 rtpctx->first_rtcp_ntp_time = AV_NOPTS_VALUE;
1279 if (st)
1280 rtpctx->range_start_offset =
1281 av_rescale_q(reply->range_start, AV_TIME_BASE_Q,
1282 st->time_base);
38f8c80b 1283 }
5948f822
MS
1284 }
1285 }
1ced9da3 1286 }
c02fd3d2 1287 rt->state = RTSP_STATE_STREAMING;
1ced9da3
LA
1288 return 0;
1289}
1290
6e69f6c4 1291static int rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
e23d195d
MS
1292{
1293 RTSPState *rt = s->priv_data;
e23d195d
MS
1294 char cmd[1024];
1295 unsigned char *content = NULL;
1296 int ret;
1297
1298 /* describe the stream */
1299 snprintf(cmd, sizeof(cmd),
b17d11c6 1300 "Accept: application/sdp\r\n");
e23d195d
MS
1301 if (rt->server_type == RTSP_SERVER_REAL) {
1302 /**
1303 * The Require: attribute is needed for proper streaming from
1304 * Realmedia servers.
1305 */
1306 av_strlcat(cmd,
1307 "Require: com.real.retain-entity-for-setup\r\n",
1308 sizeof(cmd));
1309 }
b17d11c6 1310 ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
e23d195d
MS
1311 if (!content)
1312 return AVERROR_INVALIDDATA;
1313 if (reply->status_code != RTSP_STATUS_OK) {
1314 av_freep(&content);
1315 return AVERROR_INVALIDDATA;
1316 }
1317
6ecd7417 1318 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", content);
e23d195d
MS
1319 /* now we got the SDP description, we parse it */
1320 ret = sdp_parse(s, (const char *)content);
1321 av_freep(&content);
1322 if (ret < 0)
1323 return AVERROR_INVALIDDATA;
1324
1325 return 0;
1326}
1327
26cb700c 1328static int rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
3e24c770
MS
1329{
1330 RTSPState *rt = s->priv_data;
1331 RTSPMessageHeader reply1, *reply = &reply1;
3e24c770
MS
1332 int i;
1333 char *sdp;
26cb700c 1334 AVFormatContext sdp_ctx, *ctx_array[1];
c07c6f81 1335
9e6acc78 1336 s->start_time_realtime = av_gettime();
3e24c770
MS
1337
1338 /* Announce the stream */
28450066 1339 sdp = av_mallocz(SDP_MAX_SIZE);
3e24c770
MS
1340 if (sdp == NULL)
1341 return AVERROR(ENOMEM);
26cb700c
MS
1342 /* We create the SDP based on the RTSP AVFormatContext where we
1343 * aren't allowed to change the filename field. (We create the SDP
1344 * based on the RTSP context since the contexts for the RTP streams
1345 * don't exist yet.) In order to specify a custom URL with the actual
1346 * peer IP instead of the originally specified hostname, we create
1347 * a temporary copy of the AVFormatContext, where the custom URL is set.
1348 *
1349 * FIXME: Create the SDP without copying the AVFormatContext.
1350 * This either requires setting up the RTP stream AVFormatContexts
1351 * already here (complicating things immensely) or getting a more
1352 * flexible SDP creation interface.
1353 */
1354 sdp_ctx = *s;
1355 ff_url_join(sdp_ctx.filename, sizeof(sdp_ctx.filename),
1356 "rtsp", NULL, addr, -1, NULL);
1357 ctx_array[0] = &sdp_ctx;
28450066 1358 if (avf_sdp_create(ctx_array, 1, sdp, SDP_MAX_SIZE)) {
3e24c770
MS
1359 av_free(sdp);
1360 return AVERROR_INVALIDDATA;
1361 }
d7810f45 1362 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
b17d11c6
MS
1363 ff_rtsp_send_cmd_with_content(s, "ANNOUNCE", rt->control_uri,
1364 "Content-Type: application/sdp\r\n",
1365 reply, NULL, sdp, strlen(sdp));
3e24c770
MS
1366 av_free(sdp);
1367 if (reply->status_code != RTSP_STATUS_OK)
1368 return AVERROR_INVALIDDATA;
1369
1370 /* Set up the RTSPStreams for each AVStream */
1371 for (i = 0; i < s->nb_streams; i++) {
1372 RTSPStream *rtsp_st;
1373 AVStream *st = s->streams[i];
1374
1375 rtsp_st = av_mallocz(sizeof(RTSPStream));
1376 if (!rtsp_st)
1377 return AVERROR(ENOMEM);
1378 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
1379
1380 st->priv_data = rtsp_st;
1381 rtsp_st->stream_index = i;
1382
db76ca7f 1383 av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));
3e24c770
MS
1384 /* Note, this must match the relative uri set in the sdp content */
1385 av_strlcatf(rtsp_st->control_url, sizeof(rtsp_st->control_url),
1386 "/streamid=%d", i);
1387 }
1388
1389 return 0;
1390}
1391
b8c2c41d
JA
1392void ff_rtsp_close_connections(AVFormatContext *s)
1393{
1394 RTSPState *rt = s->priv_data;
1395 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1396 url_close(rt->rtsp_hd);
6217b645 1397 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1398}
1399
3307e6ea 1400int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1401{
1402 RTSPState *rt = s->priv_data;
921da217
LB
1403 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1404 char *option_list, *option, *filename;
03f8fc08 1405 int port, err, tcp_fd;
354b7573 1406 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1407 int lower_transport_mask = 0;
1cf151e9 1408 char real_challenge[64];
03f8fc08
MS
1409 struct sockaddr_storage peer;
1410 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1411
1412 if (!ff_network_init())
1413 return AVERROR(EIO);
c8965800 1414redirect:
f5d33f52 1415 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1416 /* extract hostname and port */
f3bfe388 1417 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1418 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1419 if (*auth) {
aa8bf2fb 1420 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1421 }
53620bba
RB
1422 if (port < 0)
1423 port = RTSP_DEFAULT_PORT;
1424
1425 /* search for options */
602eb779 1426 option_list = strrchr(path, '?');
53620bba 1427 if (option_list) {
2a21adf9
MS
1428 /* Strip out the RTSP specific options, write out the rest of
1429 * the options back into the same string. */
1430 filename = option_list;
c8965800 1431 while (option_list) {
53620bba 1432 /* move the option pointer */
921da217 1433 option = ++option_list;
53620bba
RB
1434 option_list = strchr(option_list, '&');
1435 if (option_list)
921da217
LB
1436 *option_list = 0;
1437
53620bba 1438 /* handle the options */
c8965800 1439 if (!strcmp(option, "udp")) {
7a033e08 1440 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1441 } else if (!strcmp(option, "multicast")) {
7a033e08 1442 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1443 } else if (!strcmp(option, "tcp")) {
7a033e08 1444 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1445 } else if(!strcmp(option, "http")) {
1446 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1447 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1448 } else {
2a21adf9
MS
1449 /* Write options back into the buffer, using memmove instead
1450 * of strcpy since the strings may overlap. */
1451 int len = strlen(option);
1452 memmove(++filename, option, len);
1453 filename += len;
921da217
LB
1454 if (option_list) *filename = '&';
1455 }
53620bba 1456 }
921da217 1457 *filename = 0;
53620bba
RB
1458 }
1459
90abbdba 1460 if (!lower_transport_mask)
2a1d51c5 1461 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1462
3e24c770 1463 if (s->oformat) {
b7dc88fc
MS
1464 /* Only UDP or TCP - UDP multicast isn't supported. */
1465 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1466 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1467 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1468 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1469 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1470 err = AVERROR(EINVAL);
1471 goto fail;
1472 }
1473 }
1474
4bc5cc23
MS
1475 /* Construct the URI used in request; this is similar to s->filename,
1476 * but with authentication credentials removed and RTSP specific options
1477 * stripped out. */
1478 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1479 host, port, "%s", path);
1480
f5d33f52
JA
1481 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1482 /* set up initial handshake for tunneling */
1483 char httpname[1024];
1484 char sessioncookie[17];
1485 char headers[1024];
1486
10ed37b5 1487 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1488 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1489 av_get_random_seed(), av_get_random_seed());
1490
1491 /* GET requests */
9290f15d 1492 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1493 err = AVERROR(EIO);
1494 goto fail;
1495 }
1496
1497 /* generate GET headers */
1498 snprintf(headers, sizeof(headers),
1499 "x-sessioncookie: %s\r\n"
1500 "Accept: application/x-rtsp-tunnelled\r\n"
1501 "Pragma: no-cache\r\n"
1502 "Cache-Control: no-cache\r\n",
1503 sessioncookie);
00e4a1f4 1504 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1505
1506 /* complete the connection */
9290f15d 1507 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1508 err = AVERROR(EIO);
1509 goto fail;
1510 }
1511
1512 /* POST requests */
9290f15d 1513 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1514 err = AVERROR(EIO);
1515 goto fail;
1516 }
1517
1518 /* generate POST headers */
1519 snprintf(headers, sizeof(headers),
1520 "x-sessioncookie: %s\r\n"
1521 "Content-Type: application/x-rtsp-tunnelled\r\n"
1522 "Pragma: no-cache\r\n"
1523 "Cache-Control: no-cache\r\n"
1524 "Content-Length: 32767\r\n"
1525 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1526 sessioncookie);
00e4a1f4
JA
1527 ff_http_set_headers(rt->rtsp_hd_out, headers);
1528 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1529
a8ead332
MS
1530 /* Initialize the authentication state for the POST session. The HTTP
1531 * protocol implementation doesn't properly handle multi-pass
1532 * authentication for POST requests, since it would require one of
1533 * the following:
1534 * - implementing Expect: 100-continue, which many HTTP servers
1535 * don't support anyway, even less the RTSP servers that do HTTP
1536 * tunneling
1537 * - sending the whole POST data until getting a 401 reply specifying
1538 * what authentication method to use, then resending all that data
1539 * - waiting for potential 401 replies directly after sending the
1540 * POST header (waiting for some unspecified time)
1541 * Therefore, we copy the full auth state, which works for both basic
1542 * and digest. (For digest, we would have to synchronize the nonce
1543 * count variable between the two sessions, if we'd do more requests
1544 * with the original session, though.)
1545 */
1546 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1547
9290f15d
MS
1548 /* complete the connection */
1549 if (url_connect(rt->rtsp_hd_out)) {
1550 err = AVERROR(EIO);
1551 goto fail;
1552 }
f5d33f52 1553 } else {
48e77473 1554 /* open the tcp connection */
41874d0a 1555 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1556 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1557 err = AVERROR(EIO);
1558 goto fail;
1559 }
00e4a1f4 1560 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1561 }
53620bba
RB
1562 rt->seq = 0;
1563
00e4a1f4 1564 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1565 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1566 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1567 NULL, 0, NI_NUMERICHOST);
1568 }
1569
c8965800
RB
1570 /* request options supported by the server; this also detects server
1571 * type */
1cf151e9 1572 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1573 cmd[0] = 0;
2e889ae4 1574 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1575 av_strlcat(cmd,
1576 /**
1577 * The following entries are required for proper
1578 * streaming from a Realmedia server. They are
1579 * interdependent in some way although we currently
1580 * don't quite understand how. Values were copied
1581 * from mplayer SVN r23589.
1582 * @param CompanyID is a 16-byte ID in base64
1583 * @param ClientChallenge is a 16-byte ID in hex
1584 */
1585 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1586 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1587 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1588 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1589 sizeof(cmd));
b17d11c6 1590 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1591 if (reply->status_code != RTSP_STATUS_OK) {
1592 err = AVERROR_INVALIDDATA;
1593 goto fail;
1594 }
1595
1596 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1597 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1598 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1599 continue;
7a86bafa
RB
1600 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1601 rt->server_type = RTSP_SERVER_WMS;
c8965800 1602 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1603 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1604 break;
1605 }
1606
3e24c770 1607 if (s->iformat)
6e69f6c4 1608 err = rtsp_setup_input_streams(s, reply);
3e24c770 1609 else
26cb700c 1610 err = rtsp_setup_output_streams(s, host);
e23d195d 1611 if (err)
53620bba 1612 goto fail;
53620bba 1613
8a8754d8 1614 do {
c8965800
RB
1615 int lower_transport = ff_log2_tab[lower_transport_mask &
1616 ~(lower_transport_mask - 1)];
8a8754d8 1617
90abbdba 1618 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1619 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1620 real_challenge : NULL);
8a8754d8 1621 if (err < 0)
7e6ca34f 1622 goto fail;
90abbdba
RB
1623 lower_transport_mask &= ~(1 << lower_transport);
1624 if (lower_transport_mask == 0 && err == 1) {
adef229e 1625 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1626 goto fail;
1627 }
1628 } while (err);
53620bba 1629
ff762d6e 1630 rt->state = RTSP_STATE_IDLE;
c8965800 1631 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1632 return 0;
1633 fail:
3307e6ea 1634 ff_rtsp_close_streams(s);
b8c2c41d 1635 ff_rtsp_close_connections(s);
35cfd646 1636 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1637 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1638 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1639 reply->status_code,
1640 s->filename);
1641 goto redirect;
1642 }
57b5555c 1643 ff_network_close();
1617ad97
FB
1644 return err;
1645}
2e802e38 1646#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1647
0e59034e 1648static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1649 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1650{
1651 RTSPState *rt = s->priv_data;
1652 RTSPStream *rtsp_st;
1653 fd_set rfds;
a1ba71aa 1654 int fd, fd_rtcp, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1655 struct timeval tv;
1656
c8965800 1657 for (;;) {
0e59034e
RB
1658 if (url_interrupt_cb())
1659 return AVERROR(EINTR);
321259c1
MS
1660 if (wait_end && wait_end - av_gettime() < 0)
1661 return AVERROR(EAGAIN);
0e59034e
RB
1662 FD_ZERO(&rfds);
1663 if (rt->rtsp_hd) {
1664 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1665 FD_SET(tcp_fd, &rfds);
1666 } else {
1667 fd_max = 0;
1668 tcp_fd = -1;
1669 }
c8965800 1670 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1671 rtsp_st = rt->rtsp_streams[i];
1672 if (rtsp_st->rtp_handle) {
0e59034e 1673 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1674 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1675 if (FFMAX(fd, fd_rtcp) > fd_max)
1676 fd_max = FFMAX(fd, fd_rtcp);
0e59034e 1677 FD_SET(fd, &rfds);
a1ba71aa 1678 FD_SET(fd_rtcp, &rfds);
0e59034e
RB
1679 }
1680 }
1681 tv.tv_sec = 0;
9cba6f5f 1682 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1683 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1684 if (n > 0) {
9cba6f5f 1685 timeout_cnt = 0;
c8965800 1686 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1687 rtsp_st = rt->rtsp_streams[i];
1688 if (rtsp_st->rtp_handle) {
1689 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1690 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1691 if (FD_ISSET(fd_rtcp, &rfds) || FD_ISSET(fd, &rfds)) {
0e59034e
RB
1692 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1693 if (ret > 0) {
1694 *prtsp_st = rtsp_st;
1695 return ret;
1696 }
1697 }
1698 }
1699 }
5fe8021a 1700#if CONFIG_RTSP_DEMUXER
27000636 1701 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1702 RTSPMessageHeader reply;
1703
3032276b
MS
1704 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1705 if (ret < 0)
1706 return ret;
0e59034e 1707 /* XXX: parse message */
c02fd3d2 1708 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1709 return 0;
1710 }
5fe8021a 1711#endif
9cba6f5f 1712 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1713 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1714 } else if (n < 0 && errno != EINTR)
1715 return AVERROR(errno);
0e59034e
RB
1716 }
1717}
1718
8b1ab7bf 1719static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
5fe8021a 1720 uint8_t *buf, int buf_size);
1617ad97 1721
0e59034e
RB
1722static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1723{
1724 RTSPState *rt = s->priv_data;
1725 int ret, len;
321259c1
MS
1726 RTSPStream *rtsp_st, *first_queue_st = NULL;
1727 int64_t wait_end = 0;
0e59034e 1728
b20359f5
JA
1729 if (rt->nb_byes == rt->nb_rtsp_streams)
1730 return AVERROR_EOF;
1731
0e59034e
RB
1732 /* get next frames from the same RTP packet */
1733 if (rt->cur_transport_priv) {
c8965800 1734 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1735 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1736 } else
0e59034e
RB
1737 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1738 if (ret == 0) {
1739 rt->cur_transport_priv = NULL;
1740 return 0;
1741 } else if (ret == 1) {
1742 return 0;
c8965800 1743 } else
0e59034e 1744 rt->cur_transport_priv = NULL;
0e59034e
RB
1745 }
1746
321259c1
MS
1747 if (rt->transport == RTSP_TRANSPORT_RTP) {
1748 int i;
1749 int64_t first_queue_time = 0;
1750 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1751 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
1752 int64_t queue_time = ff_rtp_queued_packet_time(rtpctx);
1753 if (queue_time && (queue_time - first_queue_time < 0 ||
1754 !first_queue_time)) {
1755 first_queue_time = queue_time;
1756 first_queue_st = rt->rtsp_streams[i];
1757 }
1758 }
1759 if (first_queue_time)
1760 wait_end = first_queue_time + s->max_delay;
1761 }
1762
0e59034e
RB
1763 /* read next RTP packet */
1764 redo:
96a7c975
MS
1765 if (!rt->recvbuf) {
1766 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1767 if (!rt->recvbuf)
1768 return AVERROR(ENOMEM);
1769 }
1770
0e59034e
RB
1771 switch(rt->lower_transport) {
1772 default:
5fe8021a 1773#if CONFIG_RTSP_DEMUXER
0e59034e 1774 case RTSP_LOWER_TRANSPORT_TCP:
96a7c975 1775 len = tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1776 break;
5fe8021a 1777#endif
0e59034e
RB
1778 case RTSP_LOWER_TRANSPORT_UDP:
1779 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1780 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
0e59034e
RB
1781 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1782 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1783 break;
1784 }
321259c1
MS
1785 if (len == AVERROR(EAGAIN) && first_queue_st &&
1786 rt->transport == RTSP_TRANSPORT_RTP) {
1787 rtsp_st = first_queue_st;
1788 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1789 goto end;
1790 }
0e59034e
RB
1791 if (len < 0)
1792 return len;
1793 if (len == 0)
1794 return AVERROR_EOF;
c8965800 1795 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1796 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1797 } else {
ad4ad27f 1798 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1799 if (ret < 0) {
1800 /* Either bad packet, or a RTCP packet. Check if the
1801 * first_rtcp_ntp_time field was initialized. */
1802 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1803 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1804 /* first_rtcp_ntp_time has been initialized for this stream,
1805 * copy the same value to all other uninitialized streams,
1806 * in order to map their timestamp origin to the same ntp time
1807 * as this one. */
1808 int i;
1809 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1810 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
2cab6b48
MS
1811 if (rtpctx2 &&
1812 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE)
1813 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
1814 }
1815 }
b20359f5
JA
1816 if (ret == -RTCP_BYE) {
1817 rt->nb_byes++;
1818
1819 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1820 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1821
1822 if (rt->nb_byes == rt->nb_rtsp_streams)
1823 return AVERROR_EOF;
1824 }
2cab6b48
MS
1825 }
1826 }
321259c1 1827end:
0e59034e
RB
1828 if (ret < 0)
1829 goto redo;
c8965800 1830 if (ret == 1)
0e59034e
RB
1831 /* more packets may follow, so we save the RTP context */
1832 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1833
1834 return ret;
1835}
1836
5fe8021a
MS
1837#if CONFIG_RTSP_DEMUXER
1838static int rtsp_read_header(AVFormatContext *s,
1839 AVFormatParameters *ap)
1840{
1841 RTSPState *rt = s->priv_data;
1842 int ret;
1843
1844 ret = ff_rtsp_connect(s);
1845 if (ret)
1846 return ret;
1847
1848 rt->real_setup_cache = av_mallocz(2 * s->nb_streams * sizeof(*rt->real_setup_cache));
1849 if (!rt->real_setup_cache)
1850 return AVERROR(ENOMEM);
1851 rt->real_setup = rt->real_setup_cache + s->nb_streams * sizeof(*rt->real_setup);
1852
1853 if (ap->initial_pause) {
1854 /* do not start immediately */
1855 } else {
1856 if (rtsp_read_play(s) < 0) {
1857 ff_rtsp_close_streams(s);
1858 ff_rtsp_close_connections(s);
1859 return AVERROR_INVALIDDATA;
1860 }
1861 }
1862
1863 return 0;
1864}
1865
1866static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1867 uint8_t *buf, int buf_size)
1868{
1869 RTSPState *rt = s->priv_data;
1870 int id, len, i, ret;
1871 RTSPStream *rtsp_st;
1872
1873#ifdef DEBUG_RTP_TCP
1874 dprintf(s, "tcp_read_packet:\n");
1875#endif
1876redo:
1877 for (;;) {
1878 RTSPMessageHeader reply;
1879
1880 ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
1881 if (ret < 0)
1882 return ret;
1883 if (ret == 1) /* received '$' */
1884 break;
1885 /* XXX: parse message */
1886 if (rt->state != RTSP_STATE_STREAMING)
1887 return 0;
1888 }
1889 ret = url_read_complete(rt->rtsp_hd, buf, 3);
1890 if (ret != 3)
1891 return -1;
1892 id = buf[0];
1893 len = AV_RB16(buf + 1);
1894#ifdef DEBUG_RTP_TCP
1895 dprintf(s, "id=%d len=%d\n", id, len);
1896#endif
1897 if (len > buf_size || len < 12)
1898 goto redo;
1899 /* get the data */
1900 ret = url_read_complete(rt->rtsp_hd, buf, len);
1901 if (ret != len)
1902 return -1;
1903 if (rt->transport == RTSP_TRANSPORT_RDT &&
1904 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
1905 return -1;
1906
1907 /* find the matching stream */
1908 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1909 rtsp_st = rt->rtsp_streams[i];
1910 if (id >= rtsp_st->interleaved_min &&
1911 id <= rtsp_st->interleaved_max)
1912 goto found;
1913 }
1914 goto redo;
1915found:
1916 *prtsp_st = rtsp_st;
1917 return len;
1918}
c8965800 1919static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1920{
1921 RTSPState *rt = s->priv_data;
98713182 1922 int ret;
30e79845
RB
1923 RTSPMessageHeader reply1, *reply = &reply1;
1924 char cmd[1024];
8b1ab7bf 1925
572c6a38 1926 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1927 int i;
1256d16b 1928
572c6a38 1929 for (i = 0; i < s->nb_streams; i++)
be73ba2f 1930 rt->real_setup[i] = s->streams[i]->discard;
572c6a38
RB
1931
1932 if (!rt->need_subscription) {
be73ba2f 1933 if (memcmp (rt->real_setup, rt->real_setup_cache,
572c6a38 1934 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1935 snprintf(cmd, sizeof(cmd),
7eaa646f 1936 "Unsubscribe: %s\r\n",
b17d11c6
MS
1937 rt->last_subscription);
1938 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1939 cmd, reply, NULL);
572c6a38
RB
1940 if (reply->status_code != RTSP_STATUS_OK)
1941 return AVERROR_INVALIDDATA;
1942 rt->need_subscription = 1;
1943 }
1256d16b 1944 }
1256d16b 1945
572c6a38
RB
1946 if (rt->need_subscription) {
1947 int r, rule_nr, first = 1;
1948
be73ba2f 1949 memcpy(rt->real_setup_cache, rt->real_setup,
572c6a38
RB
1950 sizeof(enum AVDiscard) * s->nb_streams);
1951 rt->last_subscription[0] = 0;
1952
1953 snprintf(cmd, sizeof(cmd),
b17d11c6 1954 "Subscribe: ");
572c6a38
RB
1955 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1956 rule_nr = 0;
1957 for (r = 0; r < s->nb_streams; r++) {
1958 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1959 if (s->streams[r]->discard != AVDISCARD_ALL) {
1960 if (!first)
1961 av_strlcat(rt->last_subscription, ",",
1962 sizeof(rt->last_subscription));
1963 ff_rdt_subscribe_rule(
1964 rt->last_subscription,
1965 sizeof(rt->last_subscription), i, rule_nr);
1966 first = 0;
1967 }
1968 rule_nr++;
1969 }
1970 }
1971 }
1972 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
b17d11c6
MS
1973 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1974 cmd, reply, NULL);
572c6a38
RB
1975 if (reply->status_code != RTSP_STATUS_OK)
1976 return AVERROR_INVALIDDATA;
1977 rt->need_subscription = 0;
1978
c02fd3d2 1979 if (rt->state == RTSP_STATE_STREAMING)
572c6a38
RB
1980 rtsp_read_play (s);
1981 }
1256d16b
RB
1982 }
1983
d7250724 1984 ret = rtsp_fetch_packet(s, pkt);
c8965800 1985 if (ret < 0)
98713182 1986 return ret;
30e79845
RB
1987
1988 /* send dummy request to keep TCP connection alive */
27014bf5 1989 if ((av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
30e79845 1990 if (rt->server_type == RTSP_SERVER_WMS) {
b17d11c6 1991 ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
30e79845 1992 } else {
b17d11c6 1993 ff_rtsp_send_cmd_async(s, "OPTIONS", "*", NULL);
30e79845
RB
1994 }
1995 }
1996
8b1ab7bf 1997 return 0;
1617ad97
FB
1998}
1999
ff762d6e
FB
2000/* pause the stream */
2001static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 2002{
ff762d6e 2003 RTSPState *rt = s->priv_data;
a9e534d5 2004 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34 2005
c02fd3d2 2006 if (rt->state != RTSP_STATE_STREAMING)
ff762d6e 2007 return 0;
2e889ae4 2008 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
b17d11c6 2009 ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
99b2ac07
RB
2010 if (reply->status_code != RTSP_STATUS_OK) {
2011 return -1;
2012 }
1256d16b 2013 }
5f86057f
RB
2014 rt->state = RTSP_STATE_PAUSED;
2015 return 0;
b7b8fc34
FB
2016}
2017
115329f1 2018static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 2019 int64_t timestamp, int flags)
ff762d6e
FB
2020{
2021 RTSPState *rt = s->priv_data;
115329f1 2022
c8965800
RB
2023 rt->seek_timestamp = av_rescale_q(timestamp,
2024 s->streams[stream_index]->time_base,
2025 AV_TIME_BASE_Q);
ff762d6e
FB
2026 switch(rt->state) {
2027 default:
2028 case RTSP_STATE_IDLE:
2029 break;
c02fd3d2 2030 case RTSP_STATE_STREAMING:
ec606b36
LB
2031 if (rtsp_read_pause(s) != 0)
2032 return -1;
2033 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
2034 if (rtsp_read_play(s) != 0)
2035 return -1;
2036 break;
2037 case RTSP_STATE_PAUSED:
2038 rt->state = RTSP_STATE_IDLE;
2039 break;
2040 }
2041 return 0;
2042}
2043
1617ad97
FB
2044static int rtsp_read_close(AVFormatContext *s)
2045{
2046 RTSPState *rt = s->priv_data;
1617ad97 2047
b6892136 2048#if 0
1617ad97 2049 /* NOTE: it is valid to flush the buffer here */
90abbdba 2050 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
2051 url_fclose(&rt->rtsp_gb);
2052 }
b6892136 2053#endif
b17d11c6 2054 ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
1617ad97 2055
3307e6ea 2056 ff_rtsp_close_streams(s);
b8c2c41d 2057 ff_rtsp_close_connections(s);
57b5555c 2058 ff_network_close();
be73ba2f
AJ
2059 rt->real_setup = NULL;
2060 av_freep(&rt->real_setup_cache);
1617ad97
FB
2061 return 0;
2062}
2063
d2a067d1 2064AVInputFormat rtsp_demuxer = {
1617ad97 2065 "rtsp",
bde15e74 2066 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
2067 sizeof(RTSPState),
2068 rtsp_probe,
2069 rtsp_read_header,
2070 rtsp_read_packet,
2071 rtsp_read_close,
ff762d6e 2072 rtsp_read_seek,
bb76a117 2073 .flags = AVFMT_NOFILE,
ff762d6e
FB
2074 .read_play = rtsp_read_play,
2075 .read_pause = rtsp_read_pause,
1617ad97 2076};
2e802e38 2077#endif /* CONFIG_RTSP_DEMUXER */
1617ad97 2078
cb1fdc61 2079static int sdp_probe(AVProbeData *p1)
93ced3e8 2080{
0e1ceacd 2081 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 2082
3fbd12d1 2083 /* we look for a line beginning "c=IN IP" */
0e1ceacd 2084 while (p < p_end && *p != '\0') {
3fbd12d1
MS
2085 if (p + sizeof("c=IN IP") - 1 < p_end &&
2086 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 2087 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 2088
c8965800 2089 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 2090 if (++p >= p_end)
cb1fdc61 2091 break;
cb1fdc61
FB
2092 if (*p == '\r')
2093 p++;
2094 }
93ced3e8
FB
2095 return 0;
2096}
2097
c8965800 2098static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 2099{
8b1ab7bf 2100 RTSPState *rt = s->priv_data;
93ced3e8
FB
2101 RTSPStream *rtsp_st;
2102 int size, i, err;
2103 char *content;
2104 char url[1024];
2105
57b5555c
MS
2106 if (!ff_network_init())
2107 return AVERROR(EIO);
2108
93ced3e8
FB
2109 /* read the whole sdp file */
2110 /* XXX: better loading */
2111 content = av_malloc(SDP_MAX_SIZE);
899681cd 2112 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2113 if (size <= 0) {
2114 av_free(content);
2115 return AVERROR_INVALIDDATA;
2116 }
2117 content[size] ='\0';
2118
2119 sdp_parse(s, content);
2120 av_free(content);
2121
2122 /* open each RTP stream */
c8965800 2123 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 2124 char namebuf[50];
8b1ab7bf 2125 rtsp_st = rt->rtsp_streams[i];
115329f1 2126
3fbd12d1
MS
2127 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
2128 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 2129 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 2130 namebuf, rtsp_st->sdp_port,
57b5555c
MS
2131 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
2132 rtsp_st->sdp_ttl);
dbf30963 2133 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
2134 err = AVERROR_INVALIDDATA;
2135 goto fail;
2136 }
ee0cb67f 2137 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2138 goto fail;
93ced3e8
FB
2139 }
2140 return 0;
c8965800 2141fail:
3307e6ea 2142 ff_rtsp_close_streams(s);
57b5555c 2143 ff_network_close();
93ced3e8
FB
2144 return err;
2145}
2146
93ced3e8
FB
2147static int sdp_read_close(AVFormatContext *s)
2148{
3307e6ea 2149 ff_rtsp_close_streams(s);
57b5555c 2150 ff_network_close();
93ced3e8
FB
2151 return 0;
2152}
2153
ff70e601 2154AVInputFormat sdp_demuxer = {
93ced3e8 2155 "sdp",
bde15e74 2156 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
2157 sizeof(RTSPState),
2158 sdp_probe,
2159 sdp_read_header,
d7250724 2160 rtsp_fetch_packet,
93ced3e8
FB
2161 sdp_read_close,
2162};