Allow (and parse) incoming server messages (notices) interleaved with TCP
[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
1617ad97
FB
46/* XXX: currently, the only way to change the protocols consists in
47 changing this variable */
1617ad97 48
c482500f 49#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 50int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 51#endif
85fb7b34 52
1617ad97
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53static int rtsp_probe(AVProbeData *p)
54{
f7d78f36 55 if (av_strstart(p->filename, "rtsp:", NULL))
1617ad97
FB
56 return AVPROBE_SCORE_MAX;
57 return 0;
58}
59
60static int redir_isspace(int c)
61{
ccd425e7 62 return c == ' ' || c == '\t' || c == '\n' || c == '\r';
1617ad97
FB
63}
64
65static void skip_spaces(const char **pp)
66{
67 const char *p;
68 p = *pp;
69 while (redir_isspace(*p))
70 p++;
71 *pp = p;
72}
73
115329f1 74static void get_word_sep(char *buf, int buf_size, const char *sep,
1617ad97
FB
75 const char **pp)
76{
77 const char *p;
78 char *q;
79
80 p = *pp;
d1ccf0e0
RD
81 if (*p == '/')
82 p++;
1617ad97
FB
83 skip_spaces(&p);
84 q = buf;
85 while (!strchr(sep, *p) && *p != '\0') {
86 if ((q - buf) < buf_size - 1)
87 *q++ = *p;
88 p++;
89 }
90 if (buf_size > 0)
91 *q = '\0';
92 *pp = p;
93}
94
95static void get_word(char *buf, int buf_size, const char **pp)
96{
97 const char *p;
98 char *q;
99
100 p = *pp;
101 skip_spaces(&p);
102 q = buf;
103 while (!redir_isspace(*p) && *p != '\0') {
104 if ((q - buf) < buf_size - 1)
105 *q++ = *p;
106 p++;
107 }
108 if (buf_size > 0)
109 *q = '\0';
110 *pp = p;
111}
112
93ced3e8
FB
113/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other
114 params>] */
4934884a 115static int sdp_parse_rtpmap(AVCodecContext *codec, RTSPStream *rtsp_st, int payload_type, const char *p)
93ced3e8
FB
116{
117 char buf[256];
d1ccf0e0
RD
118 int i;
119 AVCodec *c;
7b49ce2e 120 const char *c_name;
93ced3e8 121
d1ccf0e0
RD
122 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
123 see if we can handle this kind of payload */
93ced3e8 124 get_word_sep(buf, sizeof(buf), "/", &p);
d1ccf0e0 125 if (payload_type >= RTP_PT_PRIVATE) {
4934884a
RM
126 RTPDynamicProtocolHandler *handler= RTPFirstDynamicPayloadHandler;
127 while(handler) {
743b3890 128 if (!strcasecmp(buf, handler->enc_name) && (codec->codec_type == handler->codec_type)) {
4934884a
RM
129 codec->codec_id = handler->codec_id;
130 rtsp_st->dynamic_handler= handler;
131 if(handler->open) {
132 rtsp_st->dynamic_protocol_context= handler->open();
133 }
d1ccf0e0
RD
134 break;
135 }
4934884a
RM
136 handler= handler->next;
137 }
93ced3e8 138 } else {
d1ccf0e0
RD
139 /* We are in a standard case ( from http://www.iana.org/assignments/rtp-parameters) */
140 /* search into AVRtpPayloadTypes[] */
7ed19d7f 141 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
142 }
143
144 c = avcodec_find_decoder(codec->codec_id);
145 if (c && c->name)
7b49ce2e 146 c_name = c->name;
d1ccf0e0
RD
147 else
148 c_name = (char *)NULL;
149
150 if (c_name) {
151 get_word_sep(buf, sizeof(buf), "/", &p);
152 i = atoi(buf);
153 switch (codec->codec_type) {
154 case CODEC_TYPE_AUDIO:
155 av_log(codec, AV_LOG_DEBUG, " audio codec set to : %s\n", c_name);
156 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
157 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
158 if (i > 0) {
159 codec->sample_rate = i;
160 get_word_sep(buf, sizeof(buf), "/", &p);
161 i = atoi(buf);
162 if (i > 0)
163 codec->channels = i;
d0deedcb
RM
164 // TODO: there is a bug here; if it is a mono stream, and less than 22000Hz, faad upconverts to stereo and twice the
165 // frequency. No problem, but the sample rate is being set here by the sdp line. Upcoming patch forthcoming. (rdm)
d1ccf0e0
RD
166 }
167 av_log(codec, AV_LOG_DEBUG, " audio samplerate set to : %i\n", codec->sample_rate);
168 av_log(codec, AV_LOG_DEBUG, " audio channels set to : %i\n", codec->channels);
169 break;
170 case CODEC_TYPE_VIDEO:
171 av_log(codec, AV_LOG_DEBUG, " video codec set to : %s\n", c_name);
172 break;
173 default:
174 break;
175 }
176 return 0;
93ced3e8 177 }
d1ccf0e0
RD
178
179 return -1;
93ced3e8
FB
180}
181
182/* return the length and optionnaly the data */
183static int hex_to_data(uint8_t *data, const char *p)
184{
185 int c, len, v;
186
187 len = 0;
188 v = 1;
189 for(;;) {
190 skip_spaces(&p);
191 if (p == '\0')
192 break;
193 c = toupper((unsigned char)*p++);
194 if (c >= '0' && c <= '9')
195 c = c - '0';
196 else if (c >= 'A' && c <= 'F')
197 c = c - 'A' + 10;
198 else
199 break;
200 v = (v << 4) | c;
201 if (v & 0x100) {
202 if (data)
203 data[len] = v;
204 len++;
205 v = 1;
206 }
207 }
208 return len;
209}
210
d1ccf0e0
RD
211static void sdp_parse_fmtp_config(AVCodecContext *codec, char *attr, char *value)
212{
213 switch (codec->codec_id) {
214 case CODEC_ID_MPEG4:
cbee7a69 215 case CODEC_ID_AAC:
d1ccf0e0
RD
216 if (!strcmp(attr, "config")) {
217 /* decode the hexa encoded parameter */
218 int len = hex_to_data(NULL, value);
219 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
220 if (!codec->extradata)
221 return;
222 codec->extradata_size = len;
223 hex_to_data(codec->extradata, value);
224 }
225 break;
226 default:
227 break;
228 }
229 return;
230}
231
644e7acb 232typedef struct {
7b49ce2e 233 const char *str;
d1ccf0e0
RD
234 uint16_t type;
235 uint32_t offset;
644e7acb 236} AttrNameMap;
d1ccf0e0
RD
237
238/* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
239#define ATTR_NAME_TYPE_INT 0
240#define ATTR_NAME_TYPE_STR 1
644e7acb 241static const AttrNameMap attr_names[]=
d1ccf0e0 242{
be73a544
LA
243 {"SizeLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, sizelength)},
244 {"IndexLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexlength)},
245 {"IndexDeltaLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexdeltalength)},
246 {"profile-level-id", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, profile_level_id)},
247 {"StreamType", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, streamtype)},
248 {"mode", ATTR_NAME_TYPE_STR, offsetof(RTPPayloadData, mode)},
d1ccf0e0
RD
249 {NULL, -1, -1},
250};
251
d0deedcb
RM
252/** parse the attribute line from the fmtp a line of an sdp resonse. This is broken out as a function
253* because it is used in rtp_h264.c, which is forthcoming.
254*/
255int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size)
256{
257 skip_spaces(p);
258 if(**p)
259 {
260 get_word_sep(attr, attr_size, "=", p);
261 if (**p == '=')
262 (*p)++;
263 get_word_sep(value, value_size, ";", p);
264 if (**p == ';')
265 (*p)++;
266 return 1;
267 }
268 return 0;
269}
270
d1ccf0e0
RD
271/* parse a SDP line and save stream attributes */
272static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
273{
274 char attr[256];
275 char value[4096];
d1ccf0e0
RD
276 int i;
277
278 RTSPStream *rtsp_st = st->priv_data;
01f4895c 279 AVCodecContext *codec = st->codec;
be73a544 280 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
281
282 /* loop on each attribute */
1ad20f96
RM
283 while(rtsp_next_attr_and_value(&p, attr, sizeof(attr), value, sizeof(value)))
284 {
bb270c08 285 /* grab the codec extra_data from the config parameter of the fmtp line */
d1ccf0e0
RD
286 sdp_parse_fmtp_config(codec, attr, value);
287 /* Looking for a known attribute */
288 for (i = 0; attr_names[i].str; ++i) {
289 if (!strcasecmp(attr, attr_names[i].str)) {
290 if (attr_names[i].type == ATTR_NAME_TYPE_INT)
291 *(int *)((char *)rtp_payload_data + attr_names[i].offset) = atoi(value);
292 else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
293 *(char **)((char *)rtp_payload_data + attr_names[i].offset) = av_strdup(value);
bb270c08 294 }
93ced3e8 295 }
93ced3e8
FB
296 }
297}
298
31693e00
RM
299/** Parse a string \p in the form of Range:npt=xx-xx, and determine the start
300 * and end time.
301 * Used for seeking in the rtp stream.
302 */
303static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
304{
305 char buf[256];
306
307 skip_spaces(&p);
f7d78f36 308 if (!av_stristart(p, "npt=", &p))
31693e00
RM
309 return;
310
311 *start = AV_NOPTS_VALUE;
312 *end = AV_NOPTS_VALUE;
313
314 get_word_sep(buf, sizeof(buf), "-", &p);
315 *start = parse_date(buf, 1);
316 if (*p == '-') {
317 p++;
318 get_word_sep(buf, sizeof(buf), "-", &p);
319 *end = parse_date(buf, 1);
320 }
321// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
322// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
323}
324
93ced3e8
FB
325typedef struct SDPParseState {
326 /* SDP only */
327 struct in_addr default_ip;
328 int default_ttl;
cb760a47 329 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
330} SDPParseState;
331
332static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
333 int letter, const char *buf)
334{
8b1ab7bf 335 RTSPState *rt = s->priv_data;
1617ad97
FB
336 char buf1[64], st_type[64];
337 const char *p;
fb65d2ca
DP
338 enum CodecType codec_type;
339 int payload_type, i;
1617ad97
FB
340 AVStream *st;
341 RTSPStream *rtsp_st;
93ced3e8
FB
342 struct in_addr sdp_ip;
343 int ttl;
344
1617ad97
FB
345#ifdef DEBUG
346 printf("sdp: %c='%s'\n", letter, buf);
347#endif
348
349 p = buf;
cb760a47
RB
350 if (s1->skip_media && letter != 'm')
351 return;
1617ad97 352 switch(letter) {
93ced3e8
FB
353 case 'c':
354 get_word(buf1, sizeof(buf1), &p);
355 if (strcmp(buf1, "IN") != 0)
356 return;
357 get_word(buf1, sizeof(buf1), &p);
358 if (strcmp(buf1, "IP4") != 0)
359 return;
360 get_word_sep(buf1, sizeof(buf1), "/", &p);
361 if (inet_aton(buf1, &sdp_ip) == 0)
362 return;
363 ttl = 16;
364 if (*p == '/') {
365 p++;
366 get_word_sep(buf1, sizeof(buf1), "/", &p);
367 ttl = atoi(buf1);
368 }
369 if (s->nb_streams == 0) {
370 s1->default_ip = sdp_ip;
371 s1->default_ttl = ttl;
372 } else {
373 st = s->streams[s->nb_streams - 1];
374 rtsp_st = st->priv_data;
375 rtsp_st->sdp_ip = sdp_ip;
376 rtsp_st->sdp_ttl = ttl;
377 }
378 break;
1617ad97 379 case 's':
da61e413 380 av_metadata_set(&s->metadata, "title", p);
1617ad97
FB
381 break;
382 case 'i':
383 if (s->nb_streams == 0) {
da61e413 384 av_metadata_set(&s->metadata, "comment", p);
1617ad97
FB
385 break;
386 }
387 break;
388 case 'm':
389 /* new stream */
cb760a47 390 s1->skip_media = 0;
1617ad97
FB
391 get_word(st_type, sizeof(st_type), &p);
392 if (!strcmp(st_type, "audio")) {
393 codec_type = CODEC_TYPE_AUDIO;
394 } else if (!strcmp(st_type, "video")) {
395 codec_type = CODEC_TYPE_VIDEO;
090438cc
RB
396 } else if (!strcmp(st_type, "application")) {
397 codec_type = CODEC_TYPE_DATA;
1617ad97 398 } else {
cb760a47 399 s1->skip_media = 1;
1617ad97
FB
400 return;
401 }
1617ad97
FB
402 rtsp_st = av_mallocz(sizeof(RTSPStream));
403 if (!rtsp_st)
404 return;
8b1ab7bf
FB
405 rtsp_st->stream_index = -1;
406 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
407
408 rtsp_st->sdp_ip = s1->default_ip;
409 rtsp_st->sdp_ttl = s1->default_ttl;
410
93ced3e8
FB
411 get_word(buf1, sizeof(buf1), &p); /* port */
412 rtsp_st->sdp_port = atoi(buf1);
413
414 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 415
93ced3e8
FB
416 /* XXX: handle list of formats */
417 get_word(buf1, sizeof(buf1), &p); /* format list */
418 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 419
7ed19d7f 420 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
421 /* no corresponding stream */
422 } else {
423 st = av_new_stream(s, 0);
424 if (!st)
425 return;
426 st->priv_data = rtsp_st;
427 rtsp_st->stream_index = st->index;
01f4895c 428 st->codec->codec_type = codec_type;
d1ccf0e0 429 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 430 /* if standard payload type, we can find the codec right now */
bf6d9818 431 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
432 }
433 }
1617ad97 434 /* put a default control url */
75e61b0e 435 av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url));
1617ad97
FB
436 break;
437 case 'a':
f7d78f36 438 if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
1617ad97
FB
439 char proto[32];
440 /* get the control url */
441 st = s->streams[s->nb_streams - 1];
442 rtsp_st = st->priv_data;
115329f1 443
1617ad97 444 /* XXX: may need to add full url resolution */
6ba5cbc6 445 url_split(proto, sizeof(proto), NULL, 0, NULL, 0, NULL, NULL, 0, p);
1617ad97
FB
446 if (proto[0] == '\0') {
447 /* relative control URL */
75e61b0e
MR
448 av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url));
449 av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 450 } else {
75e61b0e 451 av_strlcpy(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 452 }
83d14c85 453 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 454 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 455 get_word(buf1, sizeof(buf1), &p);
93ced3e8 456 payload_type = atoi(buf1);
83d14c85 457 st = s->streams[s->nb_streams - 1];
ff16f551
RB
458 rtsp_st = st->priv_data;
459 sdp_parse_rtpmap(st->codec, rtsp_st, payload_type, p);
f7d78f36 460 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 461 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 462 get_word(buf1, sizeof(buf1), &p);
93ced3e8
FB
463 payload_type = atoi(buf1);
464 for(i = 0; i < s->nb_streams;i++) {
465 st = s->streams[i];
466 rtsp_st = st->priv_data;
467 if (rtsp_st->sdp_payload_type == payload_type) {
4934884a 468 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 469 if(!rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf)) {
4934884a
RM
470 sdp_parse_fmtp(st, p);
471 }
472 } else {
ed787542 473 sdp_parse_fmtp(st, p);
4934884a 474 }
93ced3e8
FB
475 }
476 }
f7d78f36 477 } else if(av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
478 // let dynamic protocol handlers have a stab at the line.
479 get_word(buf1, sizeof(buf1), &p);
480 payload_type = atoi(buf1);
481 for(i = 0; i < s->nb_streams;i++) {
482 st = s->streams[i];
483 rtsp_st = st->priv_data;
484 if (rtsp_st->sdp_payload_type == payload_type) {
485 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 486 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf);
d0deedcb
RM
487 }
488 }
489 }
f7d78f36 490 } else if(av_strstart(p, "range:", &p)) {
31693e00
RM
491 int64_t start, end;
492
493 // this is so that seeking on a streamed file can work.
494 rtsp_parse_range_npt(p, &start, &end);
495 s->start_time= start;
496 s->duration= (end==AV_NOPTS_VALUE)?AV_NOPTS_VALUE:end-start; // AV_NOPTS_VALUE means live broadcast (and can't seek)
119b4668
RB
497 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
498 if (atoi(p) == 1)
499 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
500 } else {
501 if (rt->server_type == RTSP_SERVER_WMS)
502 ff_wms_parse_sdp_a_line(s, p);
503 if (s->nb_streams > 0) {
c4a3d032
RB
504 if (rt->server_type == RTSP_SERVER_REAL)
505 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
506
507 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
508 if (rtsp_st->dynamic_handler &&
509 rtsp_st->dynamic_handler->parse_sdp_a_line)
510 rtsp_st->dynamic_handler->parse_sdp_a_line(s, s->nb_streams - 1,
511 rtsp_st->dynamic_protocol_context, buf);
1a30d541 512 }
1617ad97
FB
513 }
514 break;
515 }
516}
517
5c91a675 518static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
519{
520 const char *p;
521 int letter;
9211bcdd
RB
522 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
523 * contain long SDP lines containing complete ASF Headers (several
524 * kB) or arrays of MDPR (RM stream descriptor) headers plus
525 * "rulebooks" describing their properties. Therefore, the SDP line
526 * buffer is large. */
e322d3f5 527 char buf[8192], *q;
93ced3e8 528 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 529
93ced3e8 530 memset(s1, 0, sizeof(SDPParseState));
1617ad97
FB
531 p = content;
532 for(;;) {
533 skip_spaces(&p);
534 letter = *p;
535 if (letter == '\0')
536 break;
537 p++;
538 if (*p != '=')
539 goto next_line;
540 p++;
541 /* get the content */
542 q = buf;
b6892136 543 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
544 if ((q - buf) < sizeof(buf) - 1)
545 *q++ = *p;
546 p++;
547 }
548 *q = '\0';
93ced3e8 549 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
550 next_line:
551 while (*p != '\n' && *p != '\0')
552 p++;
553 if (*p == '\n')
554 p++;
555 }
556 return 0;
557}
558
559static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
560{
561 const char *p;
562 int v;
563
564 p = *pp;
565 skip_spaces(&p);
566 v = strtol(p, (char **)&p, 10);
567 if (*p == '-') {
568 p++;
569 *min_ptr = v;
570 v = strtol(p, (char **)&p, 10);
571 *max_ptr = v;
572 } else {
573 *min_ptr = v;
574 *max_ptr = v;
575 }
576 *pp = p;
577}
578
579/* XXX: only one transport specification is parsed */
a9e534d5 580static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
581{
582 char transport_protocol[16];
583 char profile[16];
584 char lower_transport[16];
585 char parameter[16];
586 RTSPTransportField *th;
587 char buf[256];
115329f1 588
1617ad97 589 reply->nb_transports = 0;
115329f1 590
1617ad97
FB
591 for(;;) {
592 skip_spaces(&p);
593 if (*p == '\0')
594 break;
595
596 th = &reply->transports[reply->nb_transports];
597
115329f1 598 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97
FB
599 "/", &p);
600 if (*p == '/')
601 p++;
e1502118 602 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
603 get_word_sep(profile, sizeof(profile), "/;,", &p);
604 lower_transport[0] = '\0';
605 /* rtp/avp/<protocol> */
606 if (*p == '/') {
607 p++;
608 get_word_sep(lower_transport, sizeof(lower_transport),
609 ";,", &p);
119b4668
RB
610 }
611 th->transport = RTSP_TRANSPORT_RTP;
612 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
613 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 614 /* x-pn-tng/<protocol> */
e1502118
LB
615 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
616 profile[0] = '\0';
119b4668 617 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 618 }
b6892136 619 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 620 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 621 else
90abbdba 622 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 623
1617ad97
FB
624 if (*p == ';')
625 p++;
626 /* get each parameter */
627 while (*p != '\0' && *p != ',') {
628 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
629 if (!strcmp(parameter, "port")) {
630 if (*p == '=') {
631 p++;
632 rtsp_parse_range(&th->port_min, &th->port_max, &p);
633 }
634 } else if (!strcmp(parameter, "client_port")) {
635 if (*p == '=') {
636 p++;
115329f1 637 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
638 &th->client_port_max, &p);
639 }
640 } else if (!strcmp(parameter, "server_port")) {
641 if (*p == '=') {
642 p++;
115329f1 643 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
644 &th->server_port_max, &p);
645 }
646 } else if (!strcmp(parameter, "interleaved")) {
647 if (*p == '=') {
648 p++;
115329f1 649 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
650 &th->interleaved_max, &p);
651 }
652 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
653 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
654 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
655 } else if (!strcmp(parameter, "ttl")) {
656 if (*p == '=') {
657 p++;
658 th->ttl = strtol(p, (char **)&p, 10);
659 }
660 } else if (!strcmp(parameter, "destination")) {
661 struct in_addr ipaddr;
662
663 if (*p == '=') {
664 p++;
665 get_word_sep(buf, sizeof(buf), ";,", &p);
115329f1 666 if (inet_aton(buf, &ipaddr))
1617ad97
FB
667 th->destination = ntohl(ipaddr.s_addr);
668 }
669 }
670 while (*p != ';' && *p != '\0' && *p != ',')
671 p++;
672 if (*p == ';')
673 p++;
674 }
675 if (*p == ',')
676 p++;
677
678 reply->nb_transports++;
679 }
680}
681
a9e534d5 682void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
683{
684 const char *p;
685
686 /* NOTE: we do case independent match for broken servers */
687 p = buf;
f7d78f36 688 if (av_stristart(p, "Session:", &p)) {
1617ad97 689 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
f7d78f36 690 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 691 reply->content_length = strtol(p, NULL, 10);
f7d78f36 692 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 693 rtsp_parse_transport(reply, p);
f7d78f36 694 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 695 reply->seq = strtol(p, NULL, 10);
f7d78f36 696 } else if (av_stristart(p, "Range:", &p)) {
31693e00 697 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
698 } else if (av_stristart(p, "RealChallenge1:", &p)) {
699 skip_spaces(&p);
700 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
701 } else if (av_stristart(p, "Server:", &p)) {
702 skip_spaces(&p);
703 av_strlcpy(reply->server, p, sizeof(reply->server));
1617ad97
FB
704 }
705}
706
2a42b5c3
LS
707static int url_readbuf(URLContext *h, unsigned char *buf, int size)
708{
709 int ret, len;
710
711 len = 0;
712 while (len < size) {
713 ret = url_read(h, buf+len, size-len);
714 if (ret < 1)
715 return ret;
716 len += ret;
717 }
718 return len;
719}
720
b7b8fc34
FB
721/* skip a RTP/TCP interleaved packet */
722static void rtsp_skip_packet(AVFormatContext *s)
723{
724 RTSPState *rt = s->priv_data;
725 int ret, len, len1;
726 uint8_t buf[1024];
727
2a42b5c3 728 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
729 if (ret != 3)
730 return;
80fb8234 731 len = AV_RB16(buf + 1);
b7b8fc34
FB
732#ifdef DEBUG
733 printf("skipping RTP packet len=%d\n", len);
734#endif
735 /* skip payload */
736 while (len > 0) {
737 len1 = len;
738 if (len1 > sizeof(buf))
739 len1 = sizeof(buf);
2a42b5c3 740 ret = url_readbuf(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
741 if (ret != len1)
742 return;
743 len -= len1;
744 }
745}
1617ad97 746
7e726132
RB
747/**
748 * Read a RTSP message from the server, or prepare to read data
749 * packets if we're reading data interleaved over the TCP/RTSP
750 * connection as well.
751 *
752 * @param s RTSP demuxer context
753 * @param reply pointer where the RTSP message header will be stored
754 * @param content_ptr pointer where the RTSP message body, if any, will
755 * be stored (length is in \p reply)
756 * @param return_on_interleaved_data whether the function may return if we
757 * encounter a data marker ('$'), which precedes data
758 * packets over interleaved TCP/RTSP connections. If this
759 * is set, this function will return 1 after encountering
760 * a '$'. If it is not set, the function will skip any
761 * data packets (if they are encountered), until a reply
762 * has been fully parsed. If no more data is available
763 * without parsing a reply, it will return an error.
764 *
765 * @returns 1 if a data packets is ready to be received, -1 on error,
766 * and 0 on success.
767 */
768static int
29b9f58b 769rtsp_read_reply (AVFormatContext *s, RTSPMessageHeader *reply,
7e726132 770 unsigned char **content_ptr, int return_on_interleaved_data)
1617ad97
FB
771{
772 RTSPState *rt = s->priv_data;
773 char buf[4096], buf1[1024], *q;
774 unsigned char ch;
775 const char *p;
7e726132 776 int ret, content_length, line_count = 0;
1617ad97
FB
777 unsigned char *content = NULL;
778
d541a7d2 779 memset(reply, 0, sizeof(*reply));
1617ad97 780
1617ad97 781 /* parse reply (XXX: use buffers) */
1617ad97
FB
782 rt->last_reply[0] = '\0';
783 for(;;) {
784 q = buf;
785 for(;;) {
7e726132
RB
786 ret = url_readbuf(rt->rtsp_hd, &ch, 1);
787#ifdef DEBUG_RTP_TCP
788 printf("ret=%d c=%02x [%c]\n", ret, ch, ch);
789#endif
790 if (ret != 1)
791 return -1;
1617ad97
FB
792 if (ch == '\n')
793 break;
b7b8fc34
FB
794 if (ch == '$') {
795 /* XXX: only parse it if first char on line ? */
7e726132
RB
796 if (return_on_interleaved_data) {
797 return 1;
798 } else
b7b8fc34
FB
799 rtsp_skip_packet(s);
800 } else if (ch != '\r') {
1617ad97
FB
801 if ((q - buf) < sizeof(buf) - 1)
802 *q++ = ch;
803 }
804 }
805 *q = '\0';
806#ifdef DEBUG
807 printf("line='%s'\n", buf);
808#endif
809 /* test if last line */
810 if (buf[0] == '\0')
811 break;
812 p = buf;
813 if (line_count == 0) {
814 /* get reply code */
815 get_word(buf1, sizeof(buf1), &p);
816 get_word(buf1, sizeof(buf1), &p);
817 reply->status_code = atoi(buf1);
818 } else {
819 rtsp_parse_line(reply, p);
75e61b0e
MR
820 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
821 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
822 }
823 line_count++;
824 }
115329f1 825
1617ad97 826 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 827 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 828
1617ad97
FB
829 content_length = reply->content_length;
830 if (content_length > 0) {
831 /* leave some room for a trailing '\0' (useful for simple parsing) */
832 content = av_malloc(content_length + 1);
2a42b5c3 833 (void)url_readbuf(rt->rtsp_hd, content, content_length);
1617ad97
FB
834 content[content_length] = '\0';
835 }
836 if (content_ptr)
837 *content_ptr = content;
e2e2e7dd
AB
838 else
839 av_free(content);
7e726132
RB
840
841 return 0;
1617ad97
FB
842}
843
29b9f58b
RB
844static void rtsp_send_cmd(AVFormatContext *s,
845 const char *cmd, RTSPMessageHeader *reply,
846 unsigned char **content_ptr)
847{
848 RTSPState *rt = s->priv_data;
849 char buf[4096], buf1[1024];
850
851 rt->seq++;
852 av_strlcpy(buf, cmd, sizeof(buf));
853 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
854 av_strlcat(buf, buf1, sizeof(buf));
855 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
856 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
857 av_strlcat(buf, buf1, sizeof(buf));
858 }
859 av_strlcat(buf, "\r\n", sizeof(buf));
860#ifdef DEBUG
861 printf("Sending:\n%s--\n", buf);
862#endif
863 url_write(rt->rtsp_hd, buf, strlen(buf));
864
7e726132 865 rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
866}
867
1617ad97 868
8b1ab7bf
FB
869/* close and free RTSP streams */
870static void rtsp_close_streams(RTSPState *rt)
871{
872 int i;
873 RTSPStream *rtsp_st;
874
875 for(i=0;i<rt->nb_rtsp_streams;i++) {
876 rtsp_st = rt->rtsp_streams[i];
877 if (rtsp_st) {
0a861b6f 878 if (rtsp_st->transport_priv) {
accc248f 879 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 880 ff_rdt_parse_close(rtsp_st->transport_priv);
accc248f 881 else
0a861b6f 882 rtp_parse_close(rtsp_st->transport_priv);
accc248f 883 }
8b1ab7bf
FB
884 if (rtsp_st->rtp_handle)
885 url_close(rtsp_st->rtp_handle);
4934884a
RM
886 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
887 rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
8b1ab7bf 888 }
8b1ab7bf
FB
889 }
890 av_free(rt->rtsp_streams);
1a30d541
RB
891 if (rt->asf_ctx) {
892 av_close_input_stream (rt->asf_ctx);
893 rt->asf_ctx = NULL;
894 }
8b1ab7bf
FB
895}
896
ee0cb67f
RB
897static int
898rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
899{
accc248f 900 RTSPState *rt = s->priv_data;
ee0cb67f
RB
901 AVStream *st = NULL;
902
a6789dca
RB
903 /* open the RTP context */
904 if (rtsp_st->stream_index >= 0)
905 st = s->streams[rtsp_st->stream_index];
906 if (!st)
907 s->ctx_flags |= AVFMTCTX_NOHEADER;
accc248f
RB
908
909 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 910 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
accc248f
RB
911 rtsp_st->dynamic_protocol_context,
912 rtsp_st->dynamic_handler);
913 else
0a861b6f 914 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
5c918b27
RB
915 rtsp_st->sdp_payload_type,
916 &rtsp_st->rtp_payload_data);
a6789dca 917
0a861b6f 918 if (!rtsp_st->transport_priv) {
a6789dca 919 return AVERROR(ENOMEM);
accc248f 920 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
a6789dca 921 if(rtsp_st->dynamic_handler) {
0a861b6f 922 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
99a1d191
RB
923 rtsp_st->dynamic_protocol_context,
924 rtsp_st->dynamic_handler);
ee0cb67f 925 }
a6789dca 926 }
ee0cb67f
RB
927
928 return 0;
929}
930
53620bba
RB
931/**
932 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
933 */
934static int
e9dea59f 935make_setup_request (AVFormatContext *s, const char *host, int port,
90abbdba 936 int lower_transport, const char *real_challenge)
1617ad97
FB
937{
938 RTSPState *rt = s->priv_data;
f830c9a4 939 int rtx, j, i, err, interleave = 0;
1617ad97 940 RTSPStream *rtsp_st;
a9e534d5 941 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 942 char cmd[2048];
e9dea59f
RB
943 const char *trans_pref;
944
119b4668 945 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
946 trans_pref = "x-pn-tng";
947 else
948 trans_pref = "RTP/AVP";
115329f1 949
1617ad97
FB
950 /* for each stream, make the setup request */
951 /* XXX: we assume the same server is used for the control of each
952 RTSP stream */
d1ccf0e0
RD
953
954 for(j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
955 char transport[2048];
956
f830c9a4
RB
957 /**
958 * WMS serves all UDP data over a single connection, the RTX, which
959 * isn't necessarily the first in the SDP but has to be the first
960 * to be set up, else the second/third SETUP will fail with a 461.
961 */
962 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
963 rt->server_type == RTSP_SERVER_WMS) {
964 if (i == 0) {
965 /* rtx first */
966 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
967 int len = strlen(rt->rtsp_streams[rtx]->control_url);
968 if (len >= 4 &&
969 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, "/rtx"))
970 break;
971 }
972 if (rtx == rt->nb_rtsp_streams)
973 return -1; /* no RTX found */
974 rtsp_st = rt->rtsp_streams[rtx];
975 } else
976 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
977 } else
2fea9650 978 rtsp_st = rt->rtsp_streams[i];
1617ad97 979
1617ad97 980 /* RTP/UDP */
90abbdba 981 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 982 char buf[256];
85fb7b34 983
f830c9a4
RB
984 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
985 port = reply->transports[0].client_port_min;
986 goto have_port;
987 }
988
85fb7b34 989 /* first try in specified port range */
d1ccf0e0
RD
990 if (RTSP_RTP_PORT_MIN != 0) {
991 while(j <= RTSP_RTP_PORT_MAX) {
b316aa1a 992 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d", host, j);
ecdcbbf6 993 j += 2; /* we will use two port by rtp stream (rtp and rtcp) */
dbf30963 994 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) {
85fb7b34 995 goto rtp_opened;
d1ccf0e0 996 }
85fb7b34 997 }
1617ad97 998 }
85fb7b34 999
d1ccf0e0
RD
1000/* then try on any port
1001** if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1002** err = AVERROR_INVALIDDATA;
1003** goto fail;
1004** }
1005*/
85fb7b34
FB
1006
1007 rtp_opened:
8b1ab7bf 1008 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1009 have_port:
0ad306bc 1010 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1011 "%s/UDP;", trans_pref);
1012 if (rt->server_type != RTSP_SERVER_REAL)
1013 av_strlcat(transport, "unicast;", sizeof(transport));
1014 av_strlcatf(transport, sizeof(transport),
1015 "client_port=%d", port);
f830c9a4
RB
1016 if (rt->transport == RTSP_TRANSPORT_RTP &&
1017 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1018 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1019 }
1020
1021 /* RTP/TCP */
90abbdba 1022 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1023 /** For WMS streams, the application streams are only used for
1024 * UDP. When trying to set it up for TCP streams, the server
1025 * will return an error. Therefore, we skip those streams. */
1026 if (rt->server_type == RTSP_SERVER_WMS &&
1027 s->streams[rtsp_st->stream_index]->codec->codec_type == CODEC_TYPE_DATA)
1028 continue;
0ad306bc 1029 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1030 "%s/TCP;", trans_pref);
1031 if (rt->server_type == RTSP_SERVER_WMS)
1032 av_strlcat(transport, "unicast;", sizeof(transport));
1033 av_strlcatf(transport, sizeof(transport),
1034 "interleaved=%d-%d",
1035 interleave, interleave + 1);
1036 interleave += 2;
1617ad97
FB
1037 }
1038
90abbdba 1039 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1040 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1041 "%s/UDP;multicast", trans_pref);
1617ad97 1042 }
d1c6e47c
RB
1043 if (rt->server_type == RTSP_SERVER_REAL ||
1044 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1045 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1046 snprintf(cmd, sizeof(cmd),
b6892136
FB
1047 "SETUP %s RTSP/1.0\r\n"
1048 "Transport: %s\r\n",
1617ad97 1049 rtsp_st->control_url, transport);
2e889ae4 1050 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1051 char real_res[41], real_csum[9];
1052 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1053 real_challenge);
1054 av_strlcatf(cmd, sizeof(cmd),
1055 "If-Match: %s\r\n"
1056 "RealChallenge2: %s, sd=%s\r\n",
1057 rt->session_id, real_res, real_csum);
1058 }
1617ad97 1059 rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1060 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1061 err = 1;
1062 goto fail;
7e6ca34f
RB
1063 } else if (reply->status_code != RTSP_STATUS_OK ||
1064 reply->nb_transports != 1) {
1617ad97
FB
1065 err = AVERROR_INVALIDDATA;
1066 goto fail;
1067 }
1068
1069 /* XXX: same protocol for all streams is required */
1070 if (i > 0) {
119b4668
RB
1071 if (reply->transports[0].lower_transport != rt->lower_transport ||
1072 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1073 err = AVERROR_INVALIDDATA;
1074 goto fail;
1075 }
1076 } else {
90abbdba 1077 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1078 rt->transport = reply->transports[0].transport;
1617ad97
FB
1079 }
1080
1081 /* close RTP connection if not choosen */
90abbdba
RB
1082 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1083 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1084 url_close(rtsp_st->rtp_handle);
1085 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1086 }
1087
90abbdba
RB
1088 switch(reply->transports[0].lower_transport) {
1089 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1090 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1091 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1092 break;
115329f1 1093
90abbdba 1094 case RTSP_LOWER_TRANSPORT_UDP:
1617ad97
FB
1095 {
1096 char url[1024];
115329f1 1097
1617ad97 1098 /* XXX: also use address if specified */
115329f1 1099 snprintf(url, sizeof(url), "rtp://%s:%d",
1617ad97 1100 host, reply->transports[0].server_port_min);
f830c9a4
RB
1101 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1102 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1617ad97
FB
1103 err = AVERROR_INVALIDDATA;
1104 goto fail;
1105 }
1106 }
1107 break;
90abbdba 1108 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1617ad97
FB
1109 {
1110 char url[1024];
d02678ec 1111 struct in_addr in;
1617ad97 1112
d02678ec 1113 in.s_addr = htonl(reply->transports[0].destination);
35b74c3d 1114 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
d02678ec
LB
1115 inet_ntoa(in),
1116 reply->transports[0].port_min,
1117 reply->transports[0].ttl);
dbf30963 1118 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1617ad97
FB
1119 err = AVERROR_INVALIDDATA;
1120 goto fail;
1121 }
1122 }
1123 break;
1124 }
d1ccf0e0 1125
ee0cb67f 1126 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1127 goto fail;
1617ad97
FB
1128 }
1129
2e889ae4 1130 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1131 rt->need_subscription = 1;
1132
53620bba
RB
1133 return 0;
1134
1135fail:
8a8754d8
RB
1136 for (i=0; i<rt->nb_rtsp_streams; i++) {
1137 if (rt->rtsp_streams[i]->rtp_handle) {
1138 url_close(rt->rtsp_streams[i]->rtp_handle);
1139 rt->rtsp_streams[i]->rtp_handle = NULL;
1140 }
1141 }
53620bba
RB
1142 return err;
1143}
1144
1145static int rtsp_read_header(AVFormatContext *s,
1146 AVFormatParameters *ap)
1147{
1148 RTSPState *rt = s->priv_data;
1149 char host[1024], path[1024], tcpname[1024], cmd[2048], *option_list, *option;
1150 URLContext *rtsp_hd;
1151 int port, ret, err;
a9e534d5 1152 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1153 unsigned char *content = NULL;
90abbdba 1154 int lower_transport_mask = 0;
1cf151e9 1155 char real_challenge[64];
53620bba
RB
1156
1157 /* extract hostname and port */
1158 url_split(NULL, 0, NULL, 0,
1159 host, sizeof(host), &port, path, sizeof(path), s->filename);
1160 if (port < 0)
1161 port = RTSP_DEFAULT_PORT;
1162
1163 /* search for options */
1164 option_list = strchr(path, '?');
1165 if (option_list) {
1166 /* remove the options from the path */
1167 *option_list++ = 0;
1168 while(option_list) {
1169 /* move the option pointer */
1170 option = option_list;
1171 option_list = strchr(option_list, '&');
1172 if (option_list)
1173 *(option_list++) = 0;
1174 /* handle the options */
1175 if (strcmp(option, "udp") == 0)
90abbdba 1176 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
53620bba 1177 else if (strcmp(option, "multicast") == 0)
90abbdba 1178 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
53620bba 1179 else if (strcmp(option, "tcp") == 0)
90abbdba 1180 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
53620bba
RB
1181 }
1182 }
1183
90abbdba 1184 if (!lower_transport_mask)
2a1d51c5 1185 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba
RB
1186
1187 /* open the tcp connexion */
1188 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
1189 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0)
1190 return AVERROR(EIO);
1191 rt->rtsp_hd = rtsp_hd;
1192 rt->seq = 0;
1193
1cf151e9
RB
1194 /* request options supported by the server; this also detects server type */
1195 for (rt->server_type = RTSP_SERVER_RTP;;) {
1196 snprintf(cmd, sizeof(cmd),
1197 "OPTIONS %s RTSP/1.0\r\n", s->filename);
2e889ae4 1198 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1199 av_strlcat(cmd,
1200 /**
1201 * The following entries are required for proper
1202 * streaming from a Realmedia server. They are
1203 * interdependent in some way although we currently
1204 * don't quite understand how. Values were copied
1205 * from mplayer SVN r23589.
1206 * @param CompanyID is a 16-byte ID in base64
1207 * @param ClientChallenge is a 16-byte ID in hex
1208 */
1209 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1210 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1211 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1212 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1213 sizeof(cmd));
1214 rtsp_send_cmd(s, cmd, reply, NULL);
1215 if (reply->status_code != RTSP_STATUS_OK) {
1216 err = AVERROR_INVALIDDATA;
1217 goto fail;
1218 }
1219
1220 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1221 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1222 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1223 continue;
7a86bafa
RB
1224 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1225 rt->server_type = RTSP_SERVER_WMS;
2e889ae4 1226 } else if (rt->server_type == RTSP_SERVER_REAL) {
1cf151e9
RB
1227 strcpy(real_challenge, reply->real_challenge);
1228 }
1229 break;
1230 }
1231
53620bba
RB
1232 /* describe the stream */
1233 snprintf(cmd, sizeof(cmd),
1234 "DESCRIBE %s RTSP/1.0\r\n"
1235 "Accept: application/sdp\r\n",
1236 s->filename);
2e889ae4 1237 if (rt->server_type == RTSP_SERVER_REAL) {
897ade1b
RB
1238 /**
1239 * The Require: attribute is needed for proper streaming from
1240 * Realmedia servers.
1241 */
1242 av_strlcat(cmd,
1243 "Require: com.real.retain-entity-for-setup\r\n",
1244 sizeof(cmd));
1245 }
53620bba
RB
1246 rtsp_send_cmd(s, cmd, reply, &content);
1247 if (!content) {
1248 err = AVERROR_INVALIDDATA;
1249 goto fail;
1250 }
1251 if (reply->status_code != RTSP_STATUS_OK) {
1252 err = AVERROR_INVALIDDATA;
1253 goto fail;
1254 }
1255
1256 /* now we got the SDP description, we parse it */
1257 ret = sdp_parse(s, (const char *)content);
1258 av_freep(&content);
1259 if (ret < 0) {
1260 err = AVERROR_INVALIDDATA;
1261 goto fail;
1262 }
1263
8a8754d8 1264 do {
90abbdba 1265 int lower_transport = ff_log2_tab[lower_transport_mask & ~(lower_transport_mask - 1)];
8a8754d8 1266
90abbdba 1267 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1268 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1269 real_challenge : NULL);
8a8754d8 1270 if (err < 0)
7e6ca34f 1271 goto fail;
90abbdba
RB
1272 lower_transport_mask &= ~(1 << lower_transport);
1273 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1274 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1275 goto fail;
1276 }
1277 } while (err);
53620bba 1278
ff762d6e
FB
1279 rt->state = RTSP_STATE_IDLE;
1280 rt->seek_timestamp = 0; /* default is to start stream at position
1281 zero */
c04c3282 1282 if (ap->initial_pause) {
ff762d6e
FB
1283 /* do not start immediately */
1284 } else {
1285 if (rtsp_read_play(s) < 0) {
1286 err = AVERROR_INVALIDDATA;
1617ad97
FB
1287 goto fail;
1288 }
1289 }
1617ad97
FB
1290 return 0;
1291 fail:
8b1ab7bf 1292 rtsp_close_streams(rt);
1617ad97
FB
1293 av_freep(&content);
1294 url_close(rt->rtsp_hd);
1295 return err;
1296}
1297
8b1ab7bf
FB
1298static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1299 uint8_t *buf, int buf_size)
1617ad97
FB
1300{
1301 RTSPState *rt = s->priv_data;
b6892136 1302 int id, len, i, ret;
1617ad97 1303 RTSPStream *rtsp_st;
1617ad97 1304
b6892136
FB
1305#ifdef DEBUG_RTP_TCP
1306 printf("tcp_read_packet:\n");
1307#endif
1617ad97
FB
1308 redo:
1309 for(;;) {
7e726132
RB
1310 RTSPMessageHeader reply;
1311
1312 ret = rtsp_read_reply(s, &reply, NULL, 1);
1313 if (ret == -1)
8b1ab7bf 1314 return -1;
7e726132 1315 if (ret == 1) /* received '$' */
1617ad97 1316 break;
7e726132 1317 /* XXX: parse message */
1617ad97 1318 }
2a42b5c3 1319 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b6892136 1320 if (ret != 3)
8b1ab7bf 1321 return -1;
b6892136 1322 id = buf[0];
80fb8234 1323 len = AV_RB16(buf + 1);
b6892136
FB
1324#ifdef DEBUG_RTP_TCP
1325 printf("id=%d len=%d\n", id, len);
1326#endif
8b1ab7bf 1327 if (len > buf_size || len < 12)
1617ad97
FB
1328 goto redo;
1329 /* get the data */
2a42b5c3 1330 ret = url_readbuf(rt->rtsp_hd, buf, len);
b6892136 1331 if (ret != len)
8b1ab7bf 1332 return -1;
985b05d3 1333 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1334 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1335 return -1;
115329f1 1336
1617ad97 1337 /* find the matching stream */
8b1ab7bf
FB
1338 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1339 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1340 if (id >= rtsp_st->interleaved_min &&
1341 id <= rtsp_st->interleaved_max)
1617ad97
FB
1342 goto found;
1343 }
1344 goto redo;
1345 found:
8b1ab7bf
FB
1346 *prtsp_st = rtsp_st;
1347 return len;
1617ad97
FB
1348}
1349
115329f1 1350static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
8b1ab7bf 1351 uint8_t *buf, int buf_size)
1617ad97 1352{
8b1ab7bf 1353 RTSPState *rt = s->priv_data;
1617ad97
FB
1354 RTSPStream *rtsp_st;
1355 fd_set rfds;
7e726132 1356 int fd, fd_max, n, i, ret, tcp_fd;
1617ad97
FB
1357 struct timeval tv;
1358
1359 for(;;) {
b7b8fc34 1360 if (url_interrupt_cb())
a960a1e0 1361 return AVERROR(EINTR);
1617ad97 1362 FD_ZERO(&rfds);
7e726132
RB
1363 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1364 FD_SET(tcp_fd, &rfds);
8b1ab7bf
FB
1365 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1366 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1367 if (rtsp_st->rtp_handle) {
2fea9650
RB
1368 /* currently, we cannot probe RTCP handle because of
1369 * blocking restrictions */
bc8763cd
RB
1370 fd = url_get_file_handle(rtsp_st->rtp_handle);
1371 if (fd > fd_max)
1372 fd_max = fd;
1373 FD_SET(fd, &rfds);
f830c9a4 1374 }
1617ad97 1375 }
1617ad97 1376 tv.tv_sec = 0;
b7b8fc34 1377 tv.tv_usec = 100 * 1000;
1617ad97
FB
1378 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1379 if (n > 0) {
8b1ab7bf
FB
1380 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1381 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1382 if (rtsp_st->rtp_handle) {
bc8763cd
RB
1383 fd = url_get_file_handle(rtsp_st->rtp_handle);
1384 if (FD_ISSET(fd, &rfds)) {
2fea9650
RB
1385 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1386 if (ret > 0) {
1387 *prtsp_st = rtsp_st;
1388 return ret;
1389 }
1617ad97
FB
1390 }
1391 }
1392 }
7e726132
RB
1393 if (FD_ISSET(tcp_fd, &rfds)) {
1394 RTSPMessageHeader reply;
1395
1396 rtsp_read_reply(s, &reply, NULL, 0);
1397 /* XXX: parse message */
1398 }
1617ad97
FB
1399 }
1400 }
1401}
1402
1403static int rtsp_read_packet(AVFormatContext *s,
1404 AVPacket *pkt)
1405{
1406 RTSPState *rt = s->priv_data;
8b1ab7bf
FB
1407 RTSPStream *rtsp_st;
1408 int ret, len;
e49906c3 1409 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
8b1ab7bf 1410
572c6a38 1411 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1412 int i;
a9e534d5 1413 RTSPMessageHeader reply1, *reply = &reply1;
572c6a38 1414 enum AVDiscard cache[MAX_STREAMS];
1256d16b
RB
1415 char cmd[1024];
1416
572c6a38
RB
1417 for (i = 0; i < s->nb_streams; i++)
1418 cache[i] = s->streams[i]->discard;
1419
1420 if (!rt->need_subscription) {
1421 if (memcmp (cache, rt->real_setup_cache,
1422 sizeof(enum AVDiscard) * s->nb_streams)) {
1423 av_strlcatf(cmd, sizeof(cmd),
1424 "SET_PARAMETER %s RTSP/1.0\r\n"
1425 "Unsubscribe: %s\r\n",
1426 s->filename, rt->last_subscription);
1427 rtsp_send_cmd(s, cmd, reply, NULL);
1428 if (reply->status_code != RTSP_STATUS_OK)
1429 return AVERROR_INVALIDDATA;
1430 rt->need_subscription = 1;
1431 }
1256d16b 1432 }
1256d16b 1433
572c6a38
RB
1434 if (rt->need_subscription) {
1435 int r, rule_nr, first = 1;
1436
1437 memcpy(rt->real_setup_cache, cache,
1438 sizeof(enum AVDiscard) * s->nb_streams);
1439 rt->last_subscription[0] = 0;
1440
1441 snprintf(cmd, sizeof(cmd),
1442 "SET_PARAMETER %s RTSP/1.0\r\n"
1443 "Subscribe: ",
1444 s->filename);
1445 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1446 rule_nr = 0;
1447 for (r = 0; r < s->nb_streams; r++) {
1448 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1449 if (s->streams[r]->discard != AVDISCARD_ALL) {
1450 if (!first)
1451 av_strlcat(rt->last_subscription, ",",
1452 sizeof(rt->last_subscription));
1453 ff_rdt_subscribe_rule(
1454 rt->last_subscription,
1455 sizeof(rt->last_subscription), i, rule_nr);
1456 first = 0;
1457 }
1458 rule_nr++;
1459 }
1460 }
1461 }
1462 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1463 rtsp_send_cmd(s, cmd, reply, NULL);
1464 if (reply->status_code != RTSP_STATUS_OK)
1465 return AVERROR_INVALIDDATA;
1466 rt->need_subscription = 0;
1467
1468 if (rt->state == RTSP_STATE_PLAYING)
1469 rtsp_read_play (s);
1470 }
1256d16b
RB
1471 }
1472
8b1ab7bf 1473 /* get next frames from the same RTP packet */
0a861b6f 1474 if (rt->cur_transport_priv) {
119b4668 1475 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1476 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
4fce284c 1477 else
0a861b6f 1478 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
8b1ab7bf 1479 if (ret == 0) {
0a861b6f 1480 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1481 return 0;
1482 } else if (ret == 1) {
1483 return 0;
1484 } else {
0a861b6f 1485 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1486 }
1487 }
1617ad97 1488
8b1ab7bf
FB
1489 /* read next RTP packet */
1490 redo:
90abbdba 1491 switch(rt->lower_transport) {
1617ad97 1492 default:
90abbdba 1493 case RTSP_LOWER_TRANSPORT_TCP:
8b1ab7bf 1494 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1617ad97 1495 break;
90abbdba
RB
1496 case RTSP_LOWER_TRANSPORT_UDP:
1497 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
8b1ab7bf 1498 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
0a861b6f
RB
1499 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1500 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1617ad97
FB
1501 break;
1502 }
8b1ab7bf 1503 if (len < 0)
489b0d4d 1504 return len;
119b4668 1505 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1506 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
4fce284c 1507 else
0a861b6f 1508 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
8b1ab7bf
FB
1509 if (ret < 0)
1510 goto redo;
1511 if (ret == 1) {
1512 /* more packets may follow, so we save the RTP context */
0a861b6f 1513 rt->cur_transport_priv = rtsp_st->transport_priv;
8b1ab7bf
FB
1514 }
1515 return 0;
1617ad97
FB
1516}
1517
ff762d6e 1518static int rtsp_read_play(AVFormatContext *s)
b7b8fc34 1519{
ff762d6e 1520 RTSPState *rt = s->priv_data;
a9e534d5 1521 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1522 char cmd[1024];
1523
bc874dae 1524 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
ff762d6e 1525
2e889ae4 1526 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1527 if (rt->state == RTSP_STATE_PAUSED) {
1528 snprintf(cmd, sizeof(cmd),
1529 "PLAY %s RTSP/1.0\r\n",
1530 s->filename);
1531 } else {
1532 snprintf(cmd, sizeof(cmd),
1533 "PLAY %s RTSP/1.0\r\n"
1534 "Range: npt=%0.3f-\r\n",
1535 s->filename,
1536 (double)rt->seek_timestamp / AV_TIME_BASE);
1537 }
1538 rtsp_send_cmd(s, cmd, reply, NULL);
1539 if (reply->status_code != RTSP_STATUS_OK) {
1540 return -1;
1541 }
1256d16b 1542 }
5f86057f
RB
1543 rt->state = RTSP_STATE_PLAYING;
1544 return 0;
b7b8fc34
FB
1545}
1546
ff762d6e
FB
1547/* pause the stream */
1548static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1549{
ff762d6e 1550 RTSPState *rt = s->priv_data;
a9e534d5 1551 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1552 char cmd[1024];
1553
b7b8fc34 1554 rt = s->priv_data;
115329f1 1555
ff762d6e
FB
1556 if (rt->state != RTSP_STATE_PLAYING)
1557 return 0;
2e889ae4 1558 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1559 snprintf(cmd, sizeof(cmd),
1560 "PAUSE %s RTSP/1.0\r\n",
1561 s->filename);
1562 rtsp_send_cmd(s, cmd, reply, NULL);
1563 if (reply->status_code != RTSP_STATUS_OK) {
1564 return -1;
1565 }
1256d16b 1566 }
5f86057f
RB
1567 rt->state = RTSP_STATE_PAUSED;
1568 return 0;
b7b8fc34
FB
1569}
1570
115329f1 1571static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1572 int64_t timestamp, int flags)
ff762d6e
FB
1573{
1574 RTSPState *rt = s->priv_data;
115329f1 1575
50755217 1576 rt->seek_timestamp = av_rescale_q(timestamp, s->streams[stream_index]->time_base, AV_TIME_BASE_Q);
ff762d6e
FB
1577 switch(rt->state) {
1578 default:
1579 case RTSP_STATE_IDLE:
1580 break;
1581 case RTSP_STATE_PLAYING:
1582 if (rtsp_read_play(s) != 0)
1583 return -1;
1584 break;
1585 case RTSP_STATE_PAUSED:
1586 rt->state = RTSP_STATE_IDLE;
1587 break;
1588 }
1589 return 0;
1590}
1591
1617ad97
FB
1592static int rtsp_read_close(AVFormatContext *s)
1593{
1594 RTSPState *rt = s->priv_data;
a9e534d5 1595 RTSPMessageHeader reply1, *reply = &reply1;
1617ad97
FB
1596 char cmd[1024];
1597
b6892136 1598#if 0
1617ad97 1599 /* NOTE: it is valid to flush the buffer here */
90abbdba 1600 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1601 url_fclose(&rt->rtsp_gb);
1602 }
b6892136 1603#endif
115329f1 1604 snprintf(cmd, sizeof(cmd),
b6892136 1605 "TEARDOWN %s RTSP/1.0\r\n",
1617ad97
FB
1606 s->filename);
1607 rtsp_send_cmd(s, cmd, reply, NULL);
1608
8b1ab7bf 1609 rtsp_close_streams(rt);
1617ad97
FB
1610 url_close(rt->rtsp_hd);
1611 return 0;
1612}
1613
b250f9c6 1614#if CONFIG_RTSP_DEMUXER
d2a067d1 1615AVInputFormat rtsp_demuxer = {
1617ad97 1616 "rtsp",
bde15e74 1617 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1618 sizeof(RTSPState),
1619 rtsp_probe,
1620 rtsp_read_header,
1621 rtsp_read_packet,
1622 rtsp_read_close,
ff762d6e 1623 rtsp_read_seek,
bb76a117 1624 .flags = AVFMT_NOFILE,
ff762d6e
FB
1625 .read_play = rtsp_read_play,
1626 .read_pause = rtsp_read_pause,
1617ad97 1627};
96862926 1628#endif
1617ad97 1629
cb1fdc61 1630static int sdp_probe(AVProbeData *p1)
93ced3e8 1631{
0e1ceacd 1632 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1633
1634 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1635 while (p < p_end && *p != '\0') {
f7d78f36 1636 if (p + sizeof("c=IN IP4") - 1 < p_end && av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1637 return AVPROBE_SCORE_MAX / 2;
0e1ceacd
MN
1638
1639 while(p < p_end - 1 && *p != '\n') p++;
1640 if (++p >= p_end)
cb1fdc61 1641 break;
cb1fdc61
FB
1642 if (*p == '\r')
1643 p++;
1644 }
93ced3e8
FB
1645 return 0;
1646}
1647
1648#define SDP_MAX_SIZE 8192
1649
1650static int sdp_read_header(AVFormatContext *s,
1651 AVFormatParameters *ap)
1652{
8b1ab7bf 1653 RTSPState *rt = s->priv_data;
93ced3e8
FB
1654 RTSPStream *rtsp_st;
1655 int size, i, err;
1656 char *content;
1657 char url[1024];
1658
1659 /* read the whole sdp file */
1660 /* XXX: better loading */
1661 content = av_malloc(SDP_MAX_SIZE);
899681cd 1662 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1663 if (size <= 0) {
1664 av_free(content);
1665 return AVERROR_INVALIDDATA;
1666 }
1667 content[size] ='\0';
1668
1669 sdp_parse(s, content);
1670 av_free(content);
1671
1672 /* open each RTP stream */
8b1ab7bf
FB
1673 for(i=0;i<rt->nb_rtsp_streams;i++) {
1674 rtsp_st = rt->rtsp_streams[i];
115329f1 1675
d2bf42be 1676 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
115329f1 1677 inet_ntoa(rtsp_st->sdp_ip),
93ced3e8 1678 rtsp_st->sdp_port,
d2bf42be 1679 rtsp_st->sdp_port,
93ced3e8 1680 rtsp_st->sdp_ttl);
dbf30963 1681 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1682 err = AVERROR_INVALIDDATA;
1683 goto fail;
1684 }
ee0cb67f 1685 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1686 goto fail;
93ced3e8
FB
1687 }
1688 return 0;
1689 fail:
8b1ab7bf 1690 rtsp_close_streams(rt);
93ced3e8
FB
1691 return err;
1692}
1693
1694static int sdp_read_packet(AVFormatContext *s,
1695 AVPacket *pkt)
1696{
8b1ab7bf 1697 return rtsp_read_packet(s, pkt);
93ced3e8
FB
1698}
1699
1700static int sdp_read_close(AVFormatContext *s)
1701{
8b1ab7bf
FB
1702 RTSPState *rt = s->priv_data;
1703 rtsp_close_streams(rt);
93ced3e8
FB
1704 return 0;
1705}
1706
b250f9c6 1707#if CONFIG_SDP_DEMUXER
ff70e601 1708AVInputFormat sdp_demuxer = {
93ced3e8 1709 "sdp",
bde15e74 1710 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1711 sizeof(RTSPState),
1712 sdp_probe,
1713 sdp_read_header,
1714 sdp_read_packet,
1715 sdp_read_close,
1716};
ff70e601 1717#endif
93ced3e8 1718
b250f9c6 1719#if CONFIG_REDIR_DEMUXER
1617ad97
FB
1720/* dummy redirector format (used directly in av_open_input_file now) */
1721static int redir_probe(AVProbeData *pd)
1722{
1723 const char *p;
1724 p = pd->buf;
1725 while (redir_isspace(*p))
1726 p++;
f7d78f36
MR
1727 if (av_strstart(p, "http://", NULL) ||
1728 av_strstart(p, "rtsp://", NULL))
1617ad97
FB
1729 return AVPROBE_SCORE_MAX;
1730 return 0;
1731}
1732
e8acf0ed 1733static int redir_read_header(AVFormatContext *s, AVFormatParameters *ap)
1617ad97
FB
1734{
1735 char buf[4096], *q;
1736 int c;
1737 AVFormatContext *ic = NULL;
e8acf0ed 1738 ByteIOContext *f = s->pb;
1617ad97
FB
1739
1740 /* parse each URL and try to open it */
1741 c = url_fgetc(f);
1742 while (c != URL_EOF) {
1743 /* skip spaces */
1744 for(;;) {
1745 if (!redir_isspace(c))
1746 break;
1747 c = url_fgetc(f);
1748 }
1749 if (c == URL_EOF)
1750 break;
1751 /* record url */
1752 q = buf;
1753 for(;;) {
1754 if (c == URL_EOF || redir_isspace(c))
1755 break;
1756 if ((q - buf) < sizeof(buf) - 1)
1757 *q++ = c;
1758 c = url_fgetc(f);
1759 }
1760 *q = '\0';
1761 //printf("URL='%s'\n", buf);
1762 /* try to open the media file */
1763 if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
1764 break;
1765 }
1617ad97 1766 if (!ic)
6f3e0b21 1767 return AVERROR(EIO);
e8acf0ed
LA
1768
1769 *s = *ic;
1770 url_fclose(f);
1771
1772 return 0;
1617ad97
FB
1773}
1774
d2a067d1 1775AVInputFormat redir_demuxer = {
1617ad97 1776 "redir",
bde15e74 1777 NULL_IF_CONFIG_SMALL("Redirector format"),
1617ad97
FB
1778 0,
1779 redir_probe,
e8acf0ed 1780 redir_read_header,
1617ad97
FB
1781 NULL,
1782 NULL,
1783};
e7047005 1784#endif