Update apiexample.c to use the newer avcodec_decode_audio2() API. This also
[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
7246177d
AJ
22/* needed by inet_aton() */
23#define _SVID_SOURCE
24
245976da 25#include "libavutil/avstring.h"
6a5d31ac 26#include "libavutil/intreadwrite.h"
1617ad97
FB
27#include "avformat.h"
28
db0ed93e 29#include <sys/time.h>
b250f9c6 30#if HAVE_SYS_SELECT_H
933bd8e2 31#include <sys/select.h>
6ad1c9c9 32#endif
ea452b54 33#include <strings.h>
42572ef5 34#include "network.h"
c971ff19 35#include "rtsp.h"
1617ad97 36
302879cb 37#include "rtpdec.h"
e9dea59f 38#include "rdt.h"
1a30d541 39#include "rtp_asf.h"
4934884a 40
1617ad97 41//#define DEBUG
b6892136 42//#define DEBUG_RTP_TCP
1617ad97 43
ff762d6e
FB
44static int rtsp_read_play(AVFormatContext *s);
45
c482500f 46#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 47int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 48#endif
85fb7b34 49
1617ad97
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50static int rtsp_probe(AVProbeData *p)
51{
f7d78f36 52 if (av_strstart(p->filename, "rtsp:", NULL))
1617ad97
FB
53 return AVPROBE_SCORE_MAX;
54 return 0;
55}
56
1ef36a70
RB
57#define SPACE_CHARS " \t\r\n"
58#define redir_isspace(c) strchr(SPACE_CHARS, c)
1617ad97
FB
59static void skip_spaces(const char **pp)
60{
61 const char *p;
62 p = *pp;
63 while (redir_isspace(*p))
64 p++;
65 *pp = p;
66}
67
1ef36a70
RB
68static void get_word_until_chars(char *buf, int buf_size,
69 const char *sep, const char **pp)
1617ad97
FB
70{
71 const char *p;
72 char *q;
73
74 p = *pp;
75 skip_spaces(&p);
76 q = buf;
77 while (!strchr(sep, *p) && *p != '\0') {
78 if ((q - buf) < buf_size - 1)
79 *q++ = *p;
80 p++;
81 }
82 if (buf_size > 0)
83 *q = '\0';
84 *pp = p;
85}
86
1ef36a70
RB
87static void get_word_sep(char *buf, int buf_size, const char *sep,
88 const char **pp)
1617ad97 89{
1ef36a70
RB
90 if (**pp == '/') (*pp)++;
91 get_word_until_chars(buf, buf_size, sep, pp);
92}
1617ad97 93
1ef36a70
RB
94static void get_word(char *buf, int buf_size, const char **pp)
95{
96 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
97}
98
93ced3e8
FB
99/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other
100 params>] */
4934884a 101static int sdp_parse_rtpmap(AVCodecContext *codec, RTSPStream *rtsp_st, int payload_type, const char *p)
93ced3e8
FB
102{
103 char buf[256];
d1ccf0e0
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104 int i;
105 AVCodec *c;
7b49ce2e 106 const char *c_name;
93ced3e8 107
d1ccf0e0
RD
108 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
109 see if we can handle this kind of payload */
93ced3e8 110 get_word_sep(buf, sizeof(buf), "/", &p);
d1ccf0e0 111 if (payload_type >= RTP_PT_PRIVATE) {
4934884a
RM
112 RTPDynamicProtocolHandler *handler= RTPFirstDynamicPayloadHandler;
113 while(handler) {
743b3890 114 if (!strcasecmp(buf, handler->enc_name) && (codec->codec_type == handler->codec_type)) {
4934884a
RM
115 codec->codec_id = handler->codec_id;
116 rtsp_st->dynamic_handler= handler;
117 if(handler->open) {
118 rtsp_st->dynamic_protocol_context= handler->open();
119 }
d1ccf0e0
RD
120 break;
121 }
4934884a
RM
122 handler= handler->next;
123 }
93ced3e8 124 } else {
d1ccf0e0
RD
125 /* We are in a standard case ( from http://www.iana.org/assignments/rtp-parameters) */
126 /* search into AVRtpPayloadTypes[] */
7ed19d7f 127 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
128 }
129
130 c = avcodec_find_decoder(codec->codec_id);
131 if (c && c->name)
7b49ce2e 132 c_name = c->name;
d1ccf0e0
RD
133 else
134 c_name = (char *)NULL;
135
136 if (c_name) {
137 get_word_sep(buf, sizeof(buf), "/", &p);
138 i = atoi(buf);
139 switch (codec->codec_type) {
140 case CODEC_TYPE_AUDIO:
141 av_log(codec, 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;
d0deedcb
RM
150 // TODO: there is a bug here; if it is a mono stream, and less than 22000Hz, faad upconverts to stereo and twice the
151 // frequency. No problem, but the sample rate is being set here by the sdp line. Upcoming patch forthcoming. (rdm)
d1ccf0e0
RD
152 }
153 av_log(codec, AV_LOG_DEBUG, " audio samplerate set to : %i\n", codec->sample_rate);
154 av_log(codec, AV_LOG_DEBUG, " audio channels set to : %i\n", codec->channels);
155 break;
156 case CODEC_TYPE_VIDEO:
157 av_log(codec, AV_LOG_DEBUG, " video codec set to : %s\n", c_name);
158 break;
159 default:
160 break;
161 }
162 return 0;
93ced3e8 163 }
d1ccf0e0
RD
164
165 return -1;
93ced3e8
FB
166}
167
168/* return the length and optionnaly the data */
169static int hex_to_data(uint8_t *data, const char *p)
170{
171 int c, len, v;
172
173 len = 0;
174 v = 1;
175 for(;;) {
176 skip_spaces(&p);
6a8c8b36 177 if (*p == '\0')
93ced3e8
FB
178 break;
179 c = toupper((unsigned char)*p++);
180 if (c >= '0' && c <= '9')
181 c = c - '0';
182 else if (c >= 'A' && c <= 'F')
183 c = c - 'A' + 10;
184 else
185 break;
186 v = (v << 4) | c;
187 if (v & 0x100) {
188 if (data)
189 data[len] = v;
190 len++;
191 v = 1;
192 }
193 }
194 return len;
195}
196
d1ccf0e0
RD
197static void sdp_parse_fmtp_config(AVCodecContext *codec, char *attr, char *value)
198{
199 switch (codec->codec_id) {
200 case CODEC_ID_MPEG4:
cbee7a69 201 case CODEC_ID_AAC:
d1ccf0e0
RD
202 if (!strcmp(attr, "config")) {
203 /* decode the hexa encoded parameter */
204 int len = hex_to_data(NULL, value);
7d09a993
RB
205 if (codec->extradata)
206 av_free(codec->extradata);
d1ccf0e0
RD
207 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
208 if (!codec->extradata)
209 return;
210 codec->extradata_size = len;
211 hex_to_data(codec->extradata, value);
212 }
213 break;
214 default:
215 break;
216 }
217 return;
218}
219
644e7acb 220typedef struct {
7b49ce2e 221 const char *str;
d1ccf0e0
RD
222 uint16_t type;
223 uint32_t offset;
644e7acb 224} AttrNameMap;
d1ccf0e0
RD
225
226/* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
227#define ATTR_NAME_TYPE_INT 0
228#define ATTR_NAME_TYPE_STR 1
644e7acb 229static const AttrNameMap attr_names[]=
d1ccf0e0 230{
be73a544
LA
231 {"SizeLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, sizelength)},
232 {"IndexLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexlength)},
233 {"IndexDeltaLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexdeltalength)},
234 {"profile-level-id", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, profile_level_id)},
235 {"StreamType", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, streamtype)},
236 {"mode", ATTR_NAME_TYPE_STR, offsetof(RTPPayloadData, mode)},
d1ccf0e0
RD
237 {NULL, -1, -1},
238};
239
d0deedcb
RM
240/** parse the attribute line from the fmtp a line of an sdp resonse. This is broken out as a function
241* because it is used in rtp_h264.c, which is forthcoming.
242*/
243int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size)
244{
245 skip_spaces(p);
78f731de 246 if(**p) {
d0deedcb
RM
247 get_word_sep(attr, attr_size, "=", p);
248 if (**p == '=')
249 (*p)++;
250 get_word_sep(value, value_size, ";", p);
251 if (**p == ';')
252 (*p)++;
253 return 1;
254 }
255 return 0;
256}
257
d1ccf0e0
RD
258/* parse a SDP line and save stream attributes */
259static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
260{
261 char attr[256];
262 char value[4096];
d1ccf0e0
RD
263 int i;
264
265 RTSPStream *rtsp_st = st->priv_data;
01f4895c 266 AVCodecContext *codec = st->codec;
be73a544 267 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
268
269 /* loop on each attribute */
1ad20f96
RM
270 while(rtsp_next_attr_and_value(&p, attr, sizeof(attr), value, sizeof(value)))
271 {
bb270c08 272 /* grab the codec extra_data from the config parameter of the fmtp line */
d1ccf0e0
RD
273 sdp_parse_fmtp_config(codec, attr, value);
274 /* Looking for a known attribute */
275 for (i = 0; attr_names[i].str; ++i) {
276 if (!strcasecmp(attr, attr_names[i].str)) {
277 if (attr_names[i].type == ATTR_NAME_TYPE_INT)
278 *(int *)((char *)rtp_payload_data + attr_names[i].offset) = atoi(value);
279 else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
280 *(char **)((char *)rtp_payload_data + attr_names[i].offset) = av_strdup(value);
bb270c08 281 }
93ced3e8 282 }
93ced3e8
FB
283 }
284}
285
31693e00
RM
286/** Parse a string \p in the form of Range:npt=xx-xx, and determine the start
287 * and end time.
288 * Used for seeking in the rtp stream.
289 */
290static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
291{
292 char buf[256];
293
294 skip_spaces(&p);
f7d78f36 295 if (!av_stristart(p, "npt=", &p))
31693e00
RM
296 return;
297
298 *start = AV_NOPTS_VALUE;
299 *end = AV_NOPTS_VALUE;
300
301 get_word_sep(buf, sizeof(buf), "-", &p);
302 *start = parse_date(buf, 1);
303 if (*p == '-') {
304 p++;
305 get_word_sep(buf, sizeof(buf), "-", &p);
306 *end = parse_date(buf, 1);
307 }
308// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
309// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
310}
311
93ced3e8
FB
312typedef struct SDPParseState {
313 /* SDP only */
314 struct in_addr default_ip;
315 int default_ttl;
cb760a47 316 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
317} SDPParseState;
318
319static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
320 int letter, const char *buf)
321{
8b1ab7bf 322 RTSPState *rt = s->priv_data;
1617ad97
FB
323 char buf1[64], st_type[64];
324 const char *p;
fb65d2ca
DP
325 enum CodecType codec_type;
326 int payload_type, i;
1617ad97
FB
327 AVStream *st;
328 RTSPStream *rtsp_st;
93ced3e8
FB
329 struct in_addr sdp_ip;
330 int ttl;
331
1617ad97
FB
332#ifdef DEBUG
333 printf("sdp: %c='%s'\n", letter, buf);
334#endif
335
336 p = buf;
cb760a47
RB
337 if (s1->skip_media && letter != 'm')
338 return;
1617ad97 339 switch(letter) {
93ced3e8
FB
340 case 'c':
341 get_word(buf1, sizeof(buf1), &p);
342 if (strcmp(buf1, "IN") != 0)
343 return;
344 get_word(buf1, sizeof(buf1), &p);
345 if (strcmp(buf1, "IP4") != 0)
346 return;
347 get_word_sep(buf1, sizeof(buf1), "/", &p);
348 if (inet_aton(buf1, &sdp_ip) == 0)
349 return;
350 ttl = 16;
351 if (*p == '/') {
352 p++;
353 get_word_sep(buf1, sizeof(buf1), "/", &p);
354 ttl = atoi(buf1);
355 }
356 if (s->nb_streams == 0) {
357 s1->default_ip = sdp_ip;
358 s1->default_ttl = ttl;
359 } else {
360 st = s->streams[s->nb_streams - 1];
361 rtsp_st = st->priv_data;
362 rtsp_st->sdp_ip = sdp_ip;
363 rtsp_st->sdp_ttl = ttl;
364 }
365 break;
1617ad97 366 case 's':
da61e413 367 av_metadata_set(&s->metadata, "title", p);
1617ad97
FB
368 break;
369 case 'i':
370 if (s->nb_streams == 0) {
da61e413 371 av_metadata_set(&s->metadata, "comment", p);
1617ad97
FB
372 break;
373 }
374 break;
375 case 'm':
376 /* new stream */
cb760a47 377 s1->skip_media = 0;
1617ad97
FB
378 get_word(st_type, sizeof(st_type), &p);
379 if (!strcmp(st_type, "audio")) {
380 codec_type = CODEC_TYPE_AUDIO;
381 } else if (!strcmp(st_type, "video")) {
382 codec_type = CODEC_TYPE_VIDEO;
090438cc
RB
383 } else if (!strcmp(st_type, "application")) {
384 codec_type = CODEC_TYPE_DATA;
1617ad97 385 } else {
cb760a47 386 s1->skip_media = 1;
1617ad97
FB
387 return;
388 }
1617ad97
FB
389 rtsp_st = av_mallocz(sizeof(RTSPStream));
390 if (!rtsp_st)
391 return;
8b1ab7bf
FB
392 rtsp_st->stream_index = -1;
393 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
394
395 rtsp_st->sdp_ip = s1->default_ip;
396 rtsp_st->sdp_ttl = s1->default_ttl;
397
93ced3e8
FB
398 get_word(buf1, sizeof(buf1), &p); /* port */
399 rtsp_st->sdp_port = atoi(buf1);
400
401 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 402
93ced3e8
FB
403 /* XXX: handle list of formats */
404 get_word(buf1, sizeof(buf1), &p); /* format list */
405 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 406
7ed19d7f 407 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
408 /* no corresponding stream */
409 } else {
410 st = av_new_stream(s, 0);
411 if (!st)
412 return;
413 st->priv_data = rtsp_st;
414 rtsp_st->stream_index = st->index;
01f4895c 415 st->codec->codec_type = codec_type;
d1ccf0e0 416 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 417 /* if standard payload type, we can find the codec right now */
bf6d9818 418 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
419 }
420 }
1617ad97 421 /* put a default control url */
75e61b0e 422 av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url));
1617ad97
FB
423 break;
424 case 'a':
f7d78f36 425 if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
1617ad97
FB
426 char proto[32];
427 /* get the control url */
428 st = s->streams[s->nb_streams - 1];
429 rtsp_st = st->priv_data;
115329f1 430
1617ad97 431 /* XXX: may need to add full url resolution */
6ba5cbc6 432 url_split(proto, sizeof(proto), NULL, 0, NULL, 0, NULL, NULL, 0, p);
1617ad97
FB
433 if (proto[0] == '\0') {
434 /* relative control URL */
75e61b0e
MR
435 av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url));
436 av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 437 } else {
75e61b0e 438 av_strlcpy(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 439 }
83d14c85 440 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 441 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 442 get_word(buf1, sizeof(buf1), &p);
93ced3e8 443 payload_type = atoi(buf1);
83d14c85 444 st = s->streams[s->nb_streams - 1];
ff16f551
RB
445 rtsp_st = st->priv_data;
446 sdp_parse_rtpmap(st->codec, rtsp_st, payload_type, p);
f7d78f36 447 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 448 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 449 get_word(buf1, sizeof(buf1), &p);
93ced3e8
FB
450 payload_type = atoi(buf1);
451 for(i = 0; i < s->nb_streams;i++) {
452 st = s->streams[i];
453 rtsp_st = st->priv_data;
454 if (rtsp_st->sdp_payload_type == payload_type) {
4934884a 455 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 456 if(!rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf)) {
4934884a
RM
457 sdp_parse_fmtp(st, p);
458 }
459 } else {
ed787542 460 sdp_parse_fmtp(st, p);
4934884a 461 }
93ced3e8
FB
462 }
463 }
f7d78f36 464 } else if(av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
465 // let dynamic protocol handlers have a stab at the line.
466 get_word(buf1, sizeof(buf1), &p);
467 payload_type = atoi(buf1);
468 for(i = 0; i < s->nb_streams;i++) {
469 st = s->streams[i];
470 rtsp_st = st->priv_data;
471 if (rtsp_st->sdp_payload_type == payload_type) {
472 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 473 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf);
d0deedcb
RM
474 }
475 }
476 }
f7d78f36 477 } else if(av_strstart(p, "range:", &p)) {
31693e00
RM
478 int64_t start, end;
479
480 // this is so that seeking on a streamed file can work.
481 rtsp_parse_range_npt(p, &start, &end);
482 s->start_time= start;
483 s->duration= (end==AV_NOPTS_VALUE)?AV_NOPTS_VALUE:end-start; // AV_NOPTS_VALUE means live broadcast (and can't seek)
119b4668
RB
484 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
485 if (atoi(p) == 1)
486 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
487 } else {
488 if (rt->server_type == RTSP_SERVER_WMS)
489 ff_wms_parse_sdp_a_line(s, p);
490 if (s->nb_streams > 0) {
c4a3d032
RB
491 if (rt->server_type == RTSP_SERVER_REAL)
492 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
493
494 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
495 if (rtsp_st->dynamic_handler &&
496 rtsp_st->dynamic_handler->parse_sdp_a_line)
497 rtsp_st->dynamic_handler->parse_sdp_a_line(s, s->nb_streams - 1,
498 rtsp_st->dynamic_protocol_context, buf);
1a30d541 499 }
1617ad97
FB
500 }
501 break;
502 }
503}
504
5c91a675 505static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
506{
507 const char *p;
508 int letter;
9211bcdd
RB
509 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
510 * contain long SDP lines containing complete ASF Headers (several
511 * kB) or arrays of MDPR (RM stream descriptor) headers plus
512 * "rulebooks" describing their properties. Therefore, the SDP line
513 * buffer is large. */
e322d3f5 514 char buf[8192], *q;
93ced3e8 515 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 516
93ced3e8 517 memset(s1, 0, sizeof(SDPParseState));
1617ad97
FB
518 p = content;
519 for(;;) {
520 skip_spaces(&p);
521 letter = *p;
522 if (letter == '\0')
523 break;
524 p++;
525 if (*p != '=')
526 goto next_line;
527 p++;
528 /* get the content */
529 q = buf;
b6892136 530 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
531 if ((q - buf) < sizeof(buf) - 1)
532 *q++ = *p;
533 p++;
534 }
535 *q = '\0';
93ced3e8 536 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
537 next_line:
538 while (*p != '\n' && *p != '\0')
539 p++;
540 if (*p == '\n')
541 p++;
542 }
543 return 0;
544}
545
546static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
547{
548 const char *p;
549 int v;
550
551 p = *pp;
552 skip_spaces(&p);
553 v = strtol(p, (char **)&p, 10);
554 if (*p == '-') {
555 p++;
556 *min_ptr = v;
557 v = strtol(p, (char **)&p, 10);
558 *max_ptr = v;
559 } else {
560 *min_ptr = v;
561 *max_ptr = v;
562 }
563 *pp = p;
564}
565
566/* XXX: only one transport specification is parsed */
a9e534d5 567static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
568{
569 char transport_protocol[16];
570 char profile[16];
571 char lower_transport[16];
572 char parameter[16];
573 RTSPTransportField *th;
574 char buf[256];
115329f1 575
1617ad97 576 reply->nb_transports = 0;
115329f1 577
1617ad97
FB
578 for(;;) {
579 skip_spaces(&p);
580 if (*p == '\0')
581 break;
582
583 th = &reply->transports[reply->nb_transports];
584
115329f1 585 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 586 "/", &p);
e1502118 587 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
588 get_word_sep(profile, sizeof(profile), "/;,", &p);
589 lower_transport[0] = '\0';
590 /* rtp/avp/<protocol> */
591 if (*p == '/') {
7ecc634e
LB
592 get_word_sep(lower_transport, sizeof(lower_transport),
593 ";,", &p);
119b4668
RB
594 }
595 th->transport = RTSP_TRANSPORT_RTP;
596 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
597 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 598 /* x-pn-tng/<protocol> */
e1502118
LB
599 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
600 profile[0] = '\0';
119b4668 601 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 602 }
b6892136 603 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 604 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 605 else
90abbdba 606 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 607
1617ad97
FB
608 if (*p == ';')
609 p++;
610 /* get each parameter */
611 while (*p != '\0' && *p != ',') {
612 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
613 if (!strcmp(parameter, "port")) {
614 if (*p == '=') {
615 p++;
616 rtsp_parse_range(&th->port_min, &th->port_max, &p);
617 }
618 } else if (!strcmp(parameter, "client_port")) {
619 if (*p == '=') {
620 p++;
115329f1 621 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
622 &th->client_port_max, &p);
623 }
624 } else if (!strcmp(parameter, "server_port")) {
625 if (*p == '=') {
626 p++;
115329f1 627 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
628 &th->server_port_max, &p);
629 }
630 } else if (!strcmp(parameter, "interleaved")) {
631 if (*p == '=') {
632 p++;
115329f1 633 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
634 &th->interleaved_max, &p);
635 }
636 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
637 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
638 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
639 } else if (!strcmp(parameter, "ttl")) {
640 if (*p == '=') {
641 p++;
642 th->ttl = strtol(p, (char **)&p, 10);
643 }
644 } else if (!strcmp(parameter, "destination")) {
645 struct in_addr ipaddr;
646
647 if (*p == '=') {
648 p++;
649 get_word_sep(buf, sizeof(buf), ";,", &p);
115329f1 650 if (inet_aton(buf, &ipaddr))
1617ad97
FB
651 th->destination = ntohl(ipaddr.s_addr);
652 }
653 }
654 while (*p != ';' && *p != '\0' && *p != ',')
655 p++;
656 if (*p == ';')
657 p++;
658 }
659 if (*p == ',')
660 p++;
661
662 reply->nb_transports++;
663 }
664}
665
a9e534d5 666void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
667{
668 const char *p;
669
670 /* NOTE: we do case independent match for broken servers */
671 p = buf;
f7d78f36 672 if (av_stristart(p, "Session:", &p)) {
1617ad97 673 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
f7d78f36 674 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 675 reply->content_length = strtol(p, NULL, 10);
f7d78f36 676 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 677 rtsp_parse_transport(reply, p);
f7d78f36 678 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 679 reply->seq = strtol(p, NULL, 10);
f7d78f36 680 } else if (av_stristart(p, "Range:", &p)) {
31693e00 681 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
682 } else if (av_stristart(p, "RealChallenge1:", &p)) {
683 skip_spaces(&p);
684 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
685 } else if (av_stristart(p, "Server:", &p)) {
686 skip_spaces(&p);
687 av_strlcpy(reply->server, p, sizeof(reply->server));
1617ad97
FB
688 }
689}
690
2a42b5c3
LS
691static int url_readbuf(URLContext *h, unsigned char *buf, int size)
692{
693 int ret, len;
694
695 len = 0;
696 while (len < size) {
697 ret = url_read(h, buf+len, size-len);
698 if (ret < 1)
699 return ret;
700 len += ret;
701 }
702 return len;
703}
704
b7b8fc34
FB
705/* skip a RTP/TCP interleaved packet */
706static void rtsp_skip_packet(AVFormatContext *s)
707{
708 RTSPState *rt = s->priv_data;
709 int ret, len, len1;
710 uint8_t buf[1024];
711
2a42b5c3 712 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
713 if (ret != 3)
714 return;
80fb8234 715 len = AV_RB16(buf + 1);
b7b8fc34
FB
716#ifdef DEBUG
717 printf("skipping RTP packet len=%d\n", len);
718#endif
719 /* skip payload */
720 while (len > 0) {
721 len1 = len;
722 if (len1 > sizeof(buf))
723 len1 = sizeof(buf);
2a42b5c3 724 ret = url_readbuf(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
725 if (ret != len1)
726 return;
727 len -= len1;
728 }
729}
1617ad97 730
7e726132
RB
731/**
732 * Read a RTSP message from the server, or prepare to read data
733 * packets if we're reading data interleaved over the TCP/RTSP
734 * connection as well.
735 *
736 * @param s RTSP demuxer context
737 * @param reply pointer where the RTSP message header will be stored
738 * @param content_ptr pointer where the RTSP message body, if any, will
739 * be stored (length is in \p reply)
740 * @param return_on_interleaved_data whether the function may return if we
741 * encounter a data marker ('$'), which precedes data
742 * packets over interleaved TCP/RTSP connections. If this
743 * is set, this function will return 1 after encountering
744 * a '$'. If it is not set, the function will skip any
745 * data packets (if they are encountered), until a reply
746 * has been fully parsed. If no more data is available
747 * without parsing a reply, it will return an error.
748 *
749 * @returns 1 if a data packets is ready to be received, -1 on error,
750 * and 0 on success.
751 */
752static int
29b9f58b 753rtsp_read_reply (AVFormatContext *s, RTSPMessageHeader *reply,
7e726132 754 unsigned char **content_ptr, 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
FB
766 rt->last_reply[0] = '\0';
767 for(;;) {
768 q = buf;
769 for(;;) {
7e726132
RB
770 ret = url_readbuf(rt->rtsp_hd, &ch, 1);
771#ifdef DEBUG_RTP_TCP
772 printf("ret=%d c=%02x [%c]\n", ret, ch, ch);
773#endif
774 if (ret != 1)
775 return -1;
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
b7b8fc34
FB
783 rtsp_skip_packet(s);
784 } else if (ch != '\r') {
1617ad97
FB
785 if ((q - buf) < sizeof(buf) - 1)
786 *q++ = ch;
787 }
788 }
789 *q = '\0';
790#ifdef DEBUG
791 printf("line='%s'\n", buf);
792#endif
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);
802 } else {
803 rtsp_parse_line(reply, p);
75e61b0e
MR
804 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
805 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
806 }
807 line_count++;
808 }
115329f1 809
1617ad97 810 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 811 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 812
1617ad97
FB
813 content_length = reply->content_length;
814 if (content_length > 0) {
815 /* leave some room for a trailing '\0' (useful for simple parsing) */
816 content = av_malloc(content_length + 1);
2a42b5c3 817 (void)url_readbuf(rt->rtsp_hd, content, content_length);
1617ad97
FB
818 content[content_length] = '\0';
819 }
820 if (content_ptr)
821 *content_ptr = content;
e2e2e7dd
AB
822 else
823 av_free(content);
7e726132
RB
824
825 return 0;
1617ad97
FB
826}
827
29b9f58b
RB
828static void rtsp_send_cmd(AVFormatContext *s,
829 const char *cmd, RTSPMessageHeader *reply,
830 unsigned char **content_ptr)
831{
832 RTSPState *rt = s->priv_data;
833 char buf[4096], buf1[1024];
834
835 rt->seq++;
836 av_strlcpy(buf, cmd, sizeof(buf));
837 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
838 av_strlcat(buf, buf1, sizeof(buf));
839 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
840 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
841 av_strlcat(buf, buf1, sizeof(buf));
842 }
843 av_strlcat(buf, "\r\n", sizeof(buf));
844#ifdef DEBUG
845 printf("Sending:\n%s--\n", buf);
846#endif
847 url_write(rt->rtsp_hd, buf, strlen(buf));
848
7e726132 849 rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
850}
851
1617ad97 852
8b1ab7bf
FB
853/* close and free RTSP streams */
854static void rtsp_close_streams(RTSPState *rt)
855{
856 int i;
857 RTSPStream *rtsp_st;
858
859 for(i=0;i<rt->nb_rtsp_streams;i++) {
860 rtsp_st = rt->rtsp_streams[i];
861 if (rtsp_st) {
0a861b6f 862 if (rtsp_st->transport_priv) {
accc248f 863 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 864 ff_rdt_parse_close(rtsp_st->transport_priv);
accc248f 865 else
0a861b6f 866 rtp_parse_close(rtsp_st->transport_priv);
accc248f 867 }
8b1ab7bf
FB
868 if (rtsp_st->rtp_handle)
869 url_close(rtsp_st->rtp_handle);
4934884a
RM
870 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
871 rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
8b1ab7bf 872 }
8b1ab7bf
FB
873 }
874 av_free(rt->rtsp_streams);
1a30d541
RB
875 if (rt->asf_ctx) {
876 av_close_input_stream (rt->asf_ctx);
877 rt->asf_ctx = NULL;
878 }
8b1ab7bf
FB
879}
880
ee0cb67f
RB
881static int
882rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
883{
accc248f 884 RTSPState *rt = s->priv_data;
ee0cb67f
RB
885 AVStream *st = NULL;
886
a6789dca
RB
887 /* open the RTP context */
888 if (rtsp_st->stream_index >= 0)
889 st = s->streams[rtsp_st->stream_index];
890 if (!st)
891 s->ctx_flags |= AVFMTCTX_NOHEADER;
accc248f
RB
892
893 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 894 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
accc248f
RB
895 rtsp_st->dynamic_protocol_context,
896 rtsp_st->dynamic_handler);
897 else
0a861b6f 898 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
5c918b27
RB
899 rtsp_st->sdp_payload_type,
900 &rtsp_st->rtp_payload_data);
a6789dca 901
0a861b6f 902 if (!rtsp_st->transport_priv) {
a6789dca 903 return AVERROR(ENOMEM);
accc248f 904 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
a6789dca 905 if(rtsp_st->dynamic_handler) {
0a861b6f 906 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
99a1d191
RB
907 rtsp_st->dynamic_protocol_context,
908 rtsp_st->dynamic_handler);
ee0cb67f 909 }
a6789dca 910 }
ee0cb67f
RB
911
912 return 0;
913}
914
53620bba
RB
915/**
916 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
917 */
918static int
e9dea59f 919make_setup_request (AVFormatContext *s, const char *host, int port,
90abbdba 920 int lower_transport, const char *real_challenge)
1617ad97
FB
921{
922 RTSPState *rt = s->priv_data;
f830c9a4 923 int rtx, j, i, err, interleave = 0;
1617ad97 924 RTSPStream *rtsp_st;
a9e534d5 925 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 926 char cmd[2048];
e9dea59f
RB
927 const char *trans_pref;
928
119b4668 929 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
930 trans_pref = "x-pn-tng";
931 else
932 trans_pref = "RTP/AVP";
115329f1 933
1617ad97
FB
934 /* for each stream, make the setup request */
935 /* XXX: we assume the same server is used for the control of each
936 RTSP stream */
d1ccf0e0
RD
937
938 for(j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
939 char transport[2048];
940
f830c9a4
RB
941 /**
942 * WMS serves all UDP data over a single connection, the RTX, which
943 * isn't necessarily the first in the SDP but has to be the first
944 * to be set up, else the second/third SETUP will fail with a 461.
945 */
946 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
947 rt->server_type == RTSP_SERVER_WMS) {
948 if (i == 0) {
949 /* rtx first */
950 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
951 int len = strlen(rt->rtsp_streams[rtx]->control_url);
952 if (len >= 4 &&
953 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, "/rtx"))
954 break;
955 }
956 if (rtx == rt->nb_rtsp_streams)
957 return -1; /* no RTX found */
958 rtsp_st = rt->rtsp_streams[rtx];
959 } else
960 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
961 } else
2fea9650 962 rtsp_st = rt->rtsp_streams[i];
1617ad97 963
1617ad97 964 /* RTP/UDP */
90abbdba 965 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 966 char buf[256];
85fb7b34 967
f830c9a4
RB
968 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
969 port = reply->transports[0].client_port_min;
970 goto have_port;
971 }
972
85fb7b34 973 /* first try in specified port range */
d1ccf0e0
RD
974 if (RTSP_RTP_PORT_MIN != 0) {
975 while(j <= RTSP_RTP_PORT_MAX) {
b316aa1a 976 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d", host, j);
ecdcbbf6 977 j += 2; /* we will use two port by rtp stream (rtp and rtcp) */
dbf30963 978 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) {
85fb7b34 979 goto rtp_opened;
d1ccf0e0 980 }
85fb7b34 981 }
1617ad97 982 }
85fb7b34 983
d1ccf0e0
RD
984/* then try on any port
985** if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
986** err = AVERROR_INVALIDDATA;
987** goto fail;
988** }
989*/
85fb7b34
FB
990
991 rtp_opened:
8b1ab7bf 992 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 993 have_port:
0ad306bc 994 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
995 "%s/UDP;", trans_pref);
996 if (rt->server_type != RTSP_SERVER_REAL)
997 av_strlcat(transport, "unicast;", sizeof(transport));
998 av_strlcatf(transport, sizeof(transport),
999 "client_port=%d", port);
f830c9a4
RB
1000 if (rt->transport == RTSP_TRANSPORT_RTP &&
1001 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1002 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1003 }
1004
1005 /* RTP/TCP */
90abbdba 1006 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1007 /** For WMS streams, the application streams are only used for
1008 * UDP. When trying to set it up for TCP streams, the server
1009 * will return an error. Therefore, we skip those streams. */
1010 if (rt->server_type == RTSP_SERVER_WMS &&
1011 s->streams[rtsp_st->stream_index]->codec->codec_type == CODEC_TYPE_DATA)
1012 continue;
0ad306bc 1013 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1014 "%s/TCP;", trans_pref);
1015 if (rt->server_type == RTSP_SERVER_WMS)
1016 av_strlcat(transport, "unicast;", sizeof(transport));
1017 av_strlcatf(transport, sizeof(transport),
1018 "interleaved=%d-%d",
1019 interleave, interleave + 1);
1020 interleave += 2;
1617ad97
FB
1021 }
1022
90abbdba 1023 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1024 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1025 "%s/UDP;multicast", trans_pref);
1617ad97 1026 }
d1c6e47c
RB
1027 if (rt->server_type == RTSP_SERVER_REAL ||
1028 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1029 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1030 snprintf(cmd, sizeof(cmd),
b6892136
FB
1031 "SETUP %s RTSP/1.0\r\n"
1032 "Transport: %s\r\n",
1617ad97 1033 rtsp_st->control_url, transport);
2e889ae4 1034 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1035 char real_res[41], real_csum[9];
1036 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1037 real_challenge);
1038 av_strlcatf(cmd, sizeof(cmd),
1039 "If-Match: %s\r\n"
1040 "RealChallenge2: %s, sd=%s\r\n",
1041 rt->session_id, real_res, real_csum);
1042 }
1617ad97 1043 rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1044 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1045 err = 1;
1046 goto fail;
7e6ca34f
RB
1047 } else if (reply->status_code != RTSP_STATUS_OK ||
1048 reply->nb_transports != 1) {
1617ad97
FB
1049 err = AVERROR_INVALIDDATA;
1050 goto fail;
1051 }
1052
1053 /* XXX: same protocol for all streams is required */
1054 if (i > 0) {
119b4668
RB
1055 if (reply->transports[0].lower_transport != rt->lower_transport ||
1056 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1057 err = AVERROR_INVALIDDATA;
1058 goto fail;
1059 }
1060 } else {
90abbdba 1061 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1062 rt->transport = reply->transports[0].transport;
1617ad97
FB
1063 }
1064
1065 /* close RTP connection if not choosen */
90abbdba
RB
1066 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1067 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1068 url_close(rtsp_st->rtp_handle);
1069 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1070 }
1071
90abbdba
RB
1072 switch(reply->transports[0].lower_transport) {
1073 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1074 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1075 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1076 break;
115329f1 1077
90abbdba 1078 case RTSP_LOWER_TRANSPORT_UDP:
1617ad97
FB
1079 {
1080 char url[1024];
115329f1 1081
1617ad97 1082 /* XXX: also use address if specified */
115329f1 1083 snprintf(url, sizeof(url), "rtp://%s:%d",
1617ad97 1084 host, reply->transports[0].server_port_min);
f830c9a4
RB
1085 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1086 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1617ad97
FB
1087 err = AVERROR_INVALIDDATA;
1088 goto fail;
1089 }
1090 }
1091 break;
90abbdba 1092 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1617ad97
FB
1093 {
1094 char url[1024];
d02678ec 1095 struct in_addr in;
1617ad97 1096
d02678ec 1097 in.s_addr = htonl(reply->transports[0].destination);
35b74c3d 1098 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
d02678ec
LB
1099 inet_ntoa(in),
1100 reply->transports[0].port_min,
1101 reply->transports[0].ttl);
dbf30963 1102 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1617ad97
FB
1103 err = AVERROR_INVALIDDATA;
1104 goto fail;
1105 }
1106 }
1107 break;
1108 }
d1ccf0e0 1109
ee0cb67f 1110 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1111 goto fail;
1617ad97
FB
1112 }
1113
2e889ae4 1114 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1115 rt->need_subscription = 1;
1116
53620bba
RB
1117 return 0;
1118
1119fail:
8a8754d8
RB
1120 for (i=0; i<rt->nb_rtsp_streams; i++) {
1121 if (rt->rtsp_streams[i]->rtp_handle) {
1122 url_close(rt->rtsp_streams[i]->rtp_handle);
1123 rt->rtsp_streams[i]->rtp_handle = NULL;
1124 }
1125 }
53620bba
RB
1126 return err;
1127}
1128
1129static int rtsp_read_header(AVFormatContext *s,
1130 AVFormatParameters *ap)
1131{
1132 RTSPState *rt = s->priv_data;
1133 char host[1024], path[1024], tcpname[1024], cmd[2048], *option_list, *option;
1134 URLContext *rtsp_hd;
1135 int port, ret, err;
a9e534d5 1136 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1137 unsigned char *content = NULL;
90abbdba 1138 int lower_transport_mask = 0;
1cf151e9 1139 char real_challenge[64];
53620bba
RB
1140
1141 /* extract hostname and port */
1142 url_split(NULL, 0, NULL, 0,
1143 host, sizeof(host), &port, path, sizeof(path), s->filename);
1144 if (port < 0)
1145 port = RTSP_DEFAULT_PORT;
1146
1147 /* search for options */
1148 option_list = strchr(path, '?');
1149 if (option_list) {
1150 /* remove the options from the path */
1151 *option_list++ = 0;
1152 while(option_list) {
1153 /* move the option pointer */
1154 option = option_list;
1155 option_list = strchr(option_list, '&');
1156 if (option_list)
1157 *(option_list++) = 0;
1158 /* handle the options */
1159 if (strcmp(option, "udp") == 0)
90abbdba 1160 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
53620bba 1161 else if (strcmp(option, "multicast") == 0)
90abbdba 1162 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
53620bba 1163 else if (strcmp(option, "tcp") == 0)
90abbdba 1164 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
53620bba
RB
1165 }
1166 }
1167
90abbdba 1168 if (!lower_transport_mask)
2a1d51c5 1169 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba
RB
1170
1171 /* open the tcp connexion */
1172 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
1173 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0)
1174 return AVERROR(EIO);
1175 rt->rtsp_hd = rtsp_hd;
1176 rt->seq = 0;
1177
1cf151e9
RB
1178 /* request options supported by the server; this also detects server type */
1179 for (rt->server_type = RTSP_SERVER_RTP;;) {
1180 snprintf(cmd, sizeof(cmd),
1181 "OPTIONS %s RTSP/1.0\r\n", s->filename);
2e889ae4 1182 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1183 av_strlcat(cmd,
1184 /**
1185 * The following entries are required for proper
1186 * streaming from a Realmedia server. They are
1187 * interdependent in some way although we currently
1188 * don't quite understand how. Values were copied
1189 * from mplayer SVN r23589.
1190 * @param CompanyID is a 16-byte ID in base64
1191 * @param ClientChallenge is a 16-byte ID in hex
1192 */
1193 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1194 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1195 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1196 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1197 sizeof(cmd));
1198 rtsp_send_cmd(s, cmd, reply, NULL);
1199 if (reply->status_code != RTSP_STATUS_OK) {
1200 err = AVERROR_INVALIDDATA;
1201 goto fail;
1202 }
1203
1204 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1205 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1206 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1207 continue;
7a86bafa
RB
1208 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1209 rt->server_type = RTSP_SERVER_WMS;
2e889ae4 1210 } else if (rt->server_type == RTSP_SERVER_REAL) {
1cf151e9
RB
1211 strcpy(real_challenge, reply->real_challenge);
1212 }
1213 break;
1214 }
1215
53620bba
RB
1216 /* describe the stream */
1217 snprintf(cmd, sizeof(cmd),
1218 "DESCRIBE %s RTSP/1.0\r\n"
1219 "Accept: application/sdp\r\n",
1220 s->filename);
2e889ae4 1221 if (rt->server_type == RTSP_SERVER_REAL) {
897ade1b
RB
1222 /**
1223 * The Require: attribute is needed for proper streaming from
1224 * Realmedia servers.
1225 */
1226 av_strlcat(cmd,
1227 "Require: com.real.retain-entity-for-setup\r\n",
1228 sizeof(cmd));
1229 }
53620bba
RB
1230 rtsp_send_cmd(s, cmd, reply, &content);
1231 if (!content) {
1232 err = AVERROR_INVALIDDATA;
1233 goto fail;
1234 }
1235 if (reply->status_code != RTSP_STATUS_OK) {
1236 err = AVERROR_INVALIDDATA;
1237 goto fail;
1238 }
1239
1240 /* now we got the SDP description, we parse it */
1241 ret = sdp_parse(s, (const char *)content);
1242 av_freep(&content);
1243 if (ret < 0) {
1244 err = AVERROR_INVALIDDATA;
1245 goto fail;
1246 }
1247
8a8754d8 1248 do {
90abbdba 1249 int lower_transport = ff_log2_tab[lower_transport_mask & ~(lower_transport_mask - 1)];
8a8754d8 1250
90abbdba 1251 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1252 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1253 real_challenge : NULL);
8a8754d8 1254 if (err < 0)
7e6ca34f 1255 goto fail;
90abbdba
RB
1256 lower_transport_mask &= ~(1 << lower_transport);
1257 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1258 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1259 goto fail;
1260 }
1261 } while (err);
53620bba 1262
ff762d6e
FB
1263 rt->state = RTSP_STATE_IDLE;
1264 rt->seek_timestamp = 0; /* default is to start stream at position
1265 zero */
c04c3282 1266 if (ap->initial_pause) {
ff762d6e
FB
1267 /* do not start immediately */
1268 } else {
1269 if (rtsp_read_play(s) < 0) {
1270 err = AVERROR_INVALIDDATA;
1617ad97
FB
1271 goto fail;
1272 }
1273 }
1617ad97
FB
1274 return 0;
1275 fail:
8b1ab7bf 1276 rtsp_close_streams(rt);
1617ad97
FB
1277 av_freep(&content);
1278 url_close(rt->rtsp_hd);
1279 return err;
1280}
1281
8b1ab7bf
FB
1282static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1283 uint8_t *buf, int buf_size)
1617ad97
FB
1284{
1285 RTSPState *rt = s->priv_data;
b6892136 1286 int id, len, i, ret;
1617ad97 1287 RTSPStream *rtsp_st;
1617ad97 1288
b6892136
FB
1289#ifdef DEBUG_RTP_TCP
1290 printf("tcp_read_packet:\n");
1291#endif
1617ad97
FB
1292 redo:
1293 for(;;) {
7e726132
RB
1294 RTSPMessageHeader reply;
1295
1296 ret = rtsp_read_reply(s, &reply, NULL, 1);
1297 if (ret == -1)
8b1ab7bf 1298 return -1;
7e726132 1299 if (ret == 1) /* received '$' */
1617ad97 1300 break;
7e726132 1301 /* XXX: parse message */
1617ad97 1302 }
2a42b5c3 1303 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b6892136 1304 if (ret != 3)
8b1ab7bf 1305 return -1;
b6892136 1306 id = buf[0];
80fb8234 1307 len = AV_RB16(buf + 1);
b6892136
FB
1308#ifdef DEBUG_RTP_TCP
1309 printf("id=%d len=%d\n", id, len);
1310#endif
8b1ab7bf 1311 if (len > buf_size || len < 12)
1617ad97
FB
1312 goto redo;
1313 /* get the data */
2a42b5c3 1314 ret = url_readbuf(rt->rtsp_hd, buf, len);
b6892136 1315 if (ret != len)
8b1ab7bf 1316 return -1;
985b05d3 1317 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1318 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1319 return -1;
115329f1 1320
1617ad97 1321 /* find the matching stream */
8b1ab7bf
FB
1322 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1323 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1324 if (id >= rtsp_st->interleaved_min &&
1325 id <= rtsp_st->interleaved_max)
1617ad97
FB
1326 goto found;
1327 }
1328 goto redo;
1329 found:
8b1ab7bf
FB
1330 *prtsp_st = rtsp_st;
1331 return len;
1617ad97
FB
1332}
1333
115329f1 1334static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
8b1ab7bf 1335 uint8_t *buf, int buf_size)
1617ad97 1336{
8b1ab7bf 1337 RTSPState *rt = s->priv_data;
1617ad97
FB
1338 RTSPStream *rtsp_st;
1339 fd_set rfds;
7e726132 1340 int fd, fd_max, n, i, ret, tcp_fd;
1617ad97
FB
1341 struct timeval tv;
1342
1343 for(;;) {
b7b8fc34 1344 if (url_interrupt_cb())
a960a1e0 1345 return AVERROR(EINTR);
1617ad97 1346 FD_ZERO(&rfds);
7e726132
RB
1347 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1348 FD_SET(tcp_fd, &rfds);
8b1ab7bf
FB
1349 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1350 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1351 if (rtsp_st->rtp_handle) {
2fea9650
RB
1352 /* currently, we cannot probe RTCP handle because of
1353 * blocking restrictions */
bc8763cd
RB
1354 fd = url_get_file_handle(rtsp_st->rtp_handle);
1355 if (fd > fd_max)
1356 fd_max = fd;
1357 FD_SET(fd, &rfds);
f830c9a4 1358 }
1617ad97 1359 }
1617ad97 1360 tv.tv_sec = 0;
b7b8fc34 1361 tv.tv_usec = 100 * 1000;
1617ad97
FB
1362 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1363 if (n > 0) {
8b1ab7bf
FB
1364 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1365 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1366 if (rtsp_st->rtp_handle) {
bc8763cd
RB
1367 fd = url_get_file_handle(rtsp_st->rtp_handle);
1368 if (FD_ISSET(fd, &rfds)) {
2fea9650
RB
1369 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1370 if (ret > 0) {
1371 *prtsp_st = rtsp_st;
1372 return ret;
1373 }
1617ad97
FB
1374 }
1375 }
1376 }
7e726132
RB
1377 if (FD_ISSET(tcp_fd, &rfds)) {
1378 RTSPMessageHeader reply;
1379
1380 rtsp_read_reply(s, &reply, NULL, 0);
1381 /* XXX: parse message */
1382 }
1617ad97
FB
1383 }
1384 }
1385}
1386
1387static int rtsp_read_packet(AVFormatContext *s,
1388 AVPacket *pkt)
1389{
1390 RTSPState *rt = s->priv_data;
8b1ab7bf
FB
1391 RTSPStream *rtsp_st;
1392 int ret, len;
e49906c3 1393 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
8b1ab7bf 1394
572c6a38 1395 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1396 int i;
a9e534d5 1397 RTSPMessageHeader reply1, *reply = &reply1;
572c6a38 1398 enum AVDiscard cache[MAX_STREAMS];
1256d16b
RB
1399 char cmd[1024];
1400
572c6a38
RB
1401 for (i = 0; i < s->nb_streams; i++)
1402 cache[i] = s->streams[i]->discard;
1403
1404 if (!rt->need_subscription) {
1405 if (memcmp (cache, rt->real_setup_cache,
1406 sizeof(enum AVDiscard) * s->nb_streams)) {
1407 av_strlcatf(cmd, sizeof(cmd),
1408 "SET_PARAMETER %s RTSP/1.0\r\n"
1409 "Unsubscribe: %s\r\n",
1410 s->filename, rt->last_subscription);
1411 rtsp_send_cmd(s, cmd, reply, NULL);
1412 if (reply->status_code != RTSP_STATUS_OK)
1413 return AVERROR_INVALIDDATA;
1414 rt->need_subscription = 1;
1415 }
1256d16b 1416 }
1256d16b 1417
572c6a38
RB
1418 if (rt->need_subscription) {
1419 int r, rule_nr, first = 1;
1420
1421 memcpy(rt->real_setup_cache, cache,
1422 sizeof(enum AVDiscard) * s->nb_streams);
1423 rt->last_subscription[0] = 0;
1424
1425 snprintf(cmd, sizeof(cmd),
1426 "SET_PARAMETER %s RTSP/1.0\r\n"
1427 "Subscribe: ",
1428 s->filename);
1429 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1430 rule_nr = 0;
1431 for (r = 0; r < s->nb_streams; r++) {
1432 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1433 if (s->streams[r]->discard != AVDISCARD_ALL) {
1434 if (!first)
1435 av_strlcat(rt->last_subscription, ",",
1436 sizeof(rt->last_subscription));
1437 ff_rdt_subscribe_rule(
1438 rt->last_subscription,
1439 sizeof(rt->last_subscription), i, rule_nr);
1440 first = 0;
1441 }
1442 rule_nr++;
1443 }
1444 }
1445 }
1446 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1447 rtsp_send_cmd(s, cmd, reply, NULL);
1448 if (reply->status_code != RTSP_STATUS_OK)
1449 return AVERROR_INVALIDDATA;
1450 rt->need_subscription = 0;
1451
1452 if (rt->state == RTSP_STATE_PLAYING)
1453 rtsp_read_play (s);
1454 }
1256d16b
RB
1455 }
1456
8b1ab7bf 1457 /* get next frames from the same RTP packet */
0a861b6f 1458 if (rt->cur_transport_priv) {
119b4668 1459 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1460 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
4fce284c 1461 else
0a861b6f 1462 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
8b1ab7bf 1463 if (ret == 0) {
0a861b6f 1464 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1465 return 0;
1466 } else if (ret == 1) {
1467 return 0;
1468 } else {
0a861b6f 1469 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1470 }
1471 }
1617ad97 1472
8b1ab7bf
FB
1473 /* read next RTP packet */
1474 redo:
90abbdba 1475 switch(rt->lower_transport) {
1617ad97 1476 default:
90abbdba 1477 case RTSP_LOWER_TRANSPORT_TCP:
8b1ab7bf 1478 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1617ad97 1479 break;
90abbdba
RB
1480 case RTSP_LOWER_TRANSPORT_UDP:
1481 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
8b1ab7bf 1482 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
0a861b6f
RB
1483 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1484 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1617ad97
FB
1485 break;
1486 }
8b1ab7bf 1487 if (len < 0)
489b0d4d 1488 return len;
119b4668 1489 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1490 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
4fce284c 1491 else
0a861b6f 1492 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
8b1ab7bf
FB
1493 if (ret < 0)
1494 goto redo;
1495 if (ret == 1) {
1496 /* more packets may follow, so we save the RTP context */
0a861b6f 1497 rt->cur_transport_priv = rtsp_st->transport_priv;
8b1ab7bf
FB
1498 }
1499 return 0;
1617ad97
FB
1500}
1501
ff762d6e 1502static int rtsp_read_play(AVFormatContext *s)
b7b8fc34 1503{
ff762d6e 1504 RTSPState *rt = s->priv_data;
a9e534d5 1505 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1506 char cmd[1024];
1507
bc874dae 1508 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
ff762d6e 1509
2e889ae4 1510 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1511 if (rt->state == RTSP_STATE_PAUSED) {
1512 snprintf(cmd, sizeof(cmd),
1513 "PLAY %s RTSP/1.0\r\n",
1514 s->filename);
1515 } else {
1516 snprintf(cmd, sizeof(cmd),
1517 "PLAY %s RTSP/1.0\r\n"
1518 "Range: npt=%0.3f-\r\n",
1519 s->filename,
1520 (double)rt->seek_timestamp / AV_TIME_BASE);
1521 }
1522 rtsp_send_cmd(s, cmd, reply, NULL);
1523 if (reply->status_code != RTSP_STATUS_OK) {
1524 return -1;
1525 }
1256d16b 1526 }
5f86057f
RB
1527 rt->state = RTSP_STATE_PLAYING;
1528 return 0;
b7b8fc34
FB
1529}
1530
ff762d6e
FB
1531/* pause the stream */
1532static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1533{
ff762d6e 1534 RTSPState *rt = s->priv_data;
a9e534d5 1535 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1536 char cmd[1024];
1537
b7b8fc34 1538 rt = s->priv_data;
115329f1 1539
ff762d6e
FB
1540 if (rt->state != RTSP_STATE_PLAYING)
1541 return 0;
2e889ae4 1542 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1543 snprintf(cmd, sizeof(cmd),
1544 "PAUSE %s RTSP/1.0\r\n",
1545 s->filename);
1546 rtsp_send_cmd(s, cmd, reply, NULL);
1547 if (reply->status_code != RTSP_STATUS_OK) {
1548 return -1;
1549 }
1256d16b 1550 }
5f86057f
RB
1551 rt->state = RTSP_STATE_PAUSED;
1552 return 0;
b7b8fc34
FB
1553}
1554
115329f1 1555static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1556 int64_t timestamp, int flags)
ff762d6e
FB
1557{
1558 RTSPState *rt = s->priv_data;
115329f1 1559
50755217 1560 rt->seek_timestamp = av_rescale_q(timestamp, s->streams[stream_index]->time_base, AV_TIME_BASE_Q);
ff762d6e
FB
1561 switch(rt->state) {
1562 default:
1563 case RTSP_STATE_IDLE:
1564 break;
1565 case RTSP_STATE_PLAYING:
1566 if (rtsp_read_play(s) != 0)
1567 return -1;
1568 break;
1569 case RTSP_STATE_PAUSED:
1570 rt->state = RTSP_STATE_IDLE;
1571 break;
1572 }
1573 return 0;
1574}
1575
1617ad97
FB
1576static int rtsp_read_close(AVFormatContext *s)
1577{
1578 RTSPState *rt = s->priv_data;
a9e534d5 1579 RTSPMessageHeader reply1, *reply = &reply1;
1617ad97
FB
1580 char cmd[1024];
1581
b6892136 1582#if 0
1617ad97 1583 /* NOTE: it is valid to flush the buffer here */
90abbdba 1584 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1585 url_fclose(&rt->rtsp_gb);
1586 }
b6892136 1587#endif
115329f1 1588 snprintf(cmd, sizeof(cmd),
b6892136 1589 "TEARDOWN %s RTSP/1.0\r\n",
1617ad97
FB
1590 s->filename);
1591 rtsp_send_cmd(s, cmd, reply, NULL);
1592
8b1ab7bf 1593 rtsp_close_streams(rt);
1617ad97
FB
1594 url_close(rt->rtsp_hd);
1595 return 0;
1596}
1597
b250f9c6 1598#if CONFIG_RTSP_DEMUXER
d2a067d1 1599AVInputFormat rtsp_demuxer = {
1617ad97 1600 "rtsp",
bde15e74 1601 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1602 sizeof(RTSPState),
1603 rtsp_probe,
1604 rtsp_read_header,
1605 rtsp_read_packet,
1606 rtsp_read_close,
ff762d6e 1607 rtsp_read_seek,
bb76a117 1608 .flags = AVFMT_NOFILE,
ff762d6e
FB
1609 .read_play = rtsp_read_play,
1610 .read_pause = rtsp_read_pause,
1617ad97 1611};
96862926 1612#endif
1617ad97 1613
cb1fdc61 1614static int sdp_probe(AVProbeData *p1)
93ced3e8 1615{
0e1ceacd 1616 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1617
1618 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1619 while (p < p_end && *p != '\0') {
f7d78f36 1620 if (p + sizeof("c=IN IP4") - 1 < p_end && av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1621 return AVPROBE_SCORE_MAX / 2;
0e1ceacd
MN
1622
1623 while(p < p_end - 1 && *p != '\n') p++;
1624 if (++p >= p_end)
cb1fdc61 1625 break;
cb1fdc61
FB
1626 if (*p == '\r')
1627 p++;
1628 }
93ced3e8
FB
1629 return 0;
1630}
1631
1632#define SDP_MAX_SIZE 8192
1633
1634static int sdp_read_header(AVFormatContext *s,
1635 AVFormatParameters *ap)
1636{
8b1ab7bf 1637 RTSPState *rt = s->priv_data;
93ced3e8
FB
1638 RTSPStream *rtsp_st;
1639 int size, i, err;
1640 char *content;
1641 char url[1024];
1642
1643 /* read the whole sdp file */
1644 /* XXX: better loading */
1645 content = av_malloc(SDP_MAX_SIZE);
899681cd 1646 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1647 if (size <= 0) {
1648 av_free(content);
1649 return AVERROR_INVALIDDATA;
1650 }
1651 content[size] ='\0';
1652
1653 sdp_parse(s, content);
1654 av_free(content);
1655
1656 /* open each RTP stream */
8b1ab7bf
FB
1657 for(i=0;i<rt->nb_rtsp_streams;i++) {
1658 rtsp_st = rt->rtsp_streams[i];
115329f1 1659
d2bf42be 1660 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
115329f1 1661 inet_ntoa(rtsp_st->sdp_ip),
93ced3e8 1662 rtsp_st->sdp_port,
d2bf42be 1663 rtsp_st->sdp_port,
93ced3e8 1664 rtsp_st->sdp_ttl);
dbf30963 1665 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1666 err = AVERROR_INVALIDDATA;
1667 goto fail;
1668 }
ee0cb67f 1669 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1670 goto fail;
93ced3e8
FB
1671 }
1672 return 0;
1673 fail:
8b1ab7bf 1674 rtsp_close_streams(rt);
93ced3e8
FB
1675 return err;
1676}
1677
1678static int sdp_read_packet(AVFormatContext *s,
1679 AVPacket *pkt)
1680{
8b1ab7bf 1681 return rtsp_read_packet(s, pkt);
93ced3e8
FB
1682}
1683
1684static int sdp_read_close(AVFormatContext *s)
1685{
8b1ab7bf
FB
1686 RTSPState *rt = s->priv_data;
1687 rtsp_close_streams(rt);
93ced3e8
FB
1688 return 0;
1689}
1690
b250f9c6 1691#if CONFIG_SDP_DEMUXER
ff70e601 1692AVInputFormat sdp_demuxer = {
93ced3e8 1693 "sdp",
bde15e74 1694 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1695 sizeof(RTSPState),
1696 sdp_probe,
1697 sdp_read_header,
1698 sdp_read_packet,
1699 sdp_read_close,
1700};
ff70e601 1701#endif
93ced3e8 1702
b250f9c6 1703#if CONFIG_REDIR_DEMUXER
1617ad97
FB
1704/* dummy redirector format (used directly in av_open_input_file now) */
1705static int redir_probe(AVProbeData *pd)
1706{
1707 const char *p;
1708 p = pd->buf;
36aa7bc2 1709 skip_spaces(&p);
f7d78f36
MR
1710 if (av_strstart(p, "http://", NULL) ||
1711 av_strstart(p, "rtsp://", NULL))
1617ad97
FB
1712 return AVPROBE_SCORE_MAX;
1713 return 0;
1714}
1715
e8acf0ed 1716static int redir_read_header(AVFormatContext *s, AVFormatParameters *ap)
1617ad97
FB
1717{
1718 char buf[4096], *q;
1719 int c;
1720 AVFormatContext *ic = NULL;
e8acf0ed 1721 ByteIOContext *f = s->pb;
1617ad97
FB
1722
1723 /* parse each URL and try to open it */
1724 c = url_fgetc(f);
1725 while (c != URL_EOF) {
1726 /* skip spaces */
1727 for(;;) {
1728 if (!redir_isspace(c))
1729 break;
1730 c = url_fgetc(f);
1731 }
1732 if (c == URL_EOF)
1733 break;
1734 /* record url */
1735 q = buf;
1736 for(;;) {
1737 if (c == URL_EOF || redir_isspace(c))
1738 break;
1739 if ((q - buf) < sizeof(buf) - 1)
1740 *q++ = c;
1741 c = url_fgetc(f);
1742 }
1743 *q = '\0';
1744 //printf("URL='%s'\n", buf);
1745 /* try to open the media file */
1746 if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
1747 break;
1748 }
1617ad97 1749 if (!ic)
6f3e0b21 1750 return AVERROR(EIO);
e8acf0ed
LA
1751
1752 *s = *ic;
1753 url_fclose(f);
1754
1755 return 0;
1617ad97
FB
1756}
1757
d2a067d1 1758AVInputFormat redir_demuxer = {
1617ad97 1759 "redir",
bde15e74 1760 NULL_IF_CONFIG_SMALL("Redirector format"),
1617ad97
FB
1761 0,
1762 redir_probe,
e8acf0ed 1763 redir_read_header,
1617ad97
FB
1764 NULL,
1765 NULL,
1766};
e7047005 1767#endif