Merge functional code from get_word() and get_word_sep() into a single
[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
1ef36a70
RB
60#define SPACE_CHARS " \t\r\n"
61#define redir_isspace(c) strchr(SPACE_CHARS, c)
1617ad97
FB
62static void skip_spaces(const char **pp)
63{
64 const char *p;
65 p = *pp;
66 while (redir_isspace(*p))
67 p++;
68 *pp = p;
69}
70
1ef36a70
RB
71static void get_word_until_chars(char *buf, int buf_size,
72 const char *sep, const char **pp)
1617ad97
FB
73{
74 const char *p;
75 char *q;
76
77 p = *pp;
78 skip_spaces(&p);
79 q = buf;
80 while (!strchr(sep, *p) && *p != '\0') {
81 if ((q - buf) < buf_size - 1)
82 *q++ = *p;
83 p++;
84 }
85 if (buf_size > 0)
86 *q = '\0';
87 *pp = p;
88}
89
1ef36a70
RB
90static void get_word_sep(char *buf, int buf_size, const char *sep,
91 const char **pp)
1617ad97 92{
1ef36a70
RB
93 if (**pp == '/') (*pp)++;
94 get_word_until_chars(buf, buf_size, sep, pp);
95}
1617ad97 96
1ef36a70
RB
97static void get_word(char *buf, int buf_size, const char **pp)
98{
99 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
100}
101
93ced3e8
FB
102/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other
103 params>] */
4934884a 104static int sdp_parse_rtpmap(AVCodecContext *codec, RTSPStream *rtsp_st, int payload_type, const char *p)
93ced3e8
FB
105{
106 char buf[256];
d1ccf0e0
RD
107 int i;
108 AVCodec *c;
7b49ce2e 109 const char *c_name;
93ced3e8 110
d1ccf0e0
RD
111 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
112 see if we can handle this kind of payload */
93ced3e8 113 get_word_sep(buf, sizeof(buf), "/", &p);
d1ccf0e0 114 if (payload_type >= RTP_PT_PRIVATE) {
4934884a
RM
115 RTPDynamicProtocolHandler *handler= RTPFirstDynamicPayloadHandler;
116 while(handler) {
743b3890 117 if (!strcasecmp(buf, handler->enc_name) && (codec->codec_type == handler->codec_type)) {
4934884a
RM
118 codec->codec_id = handler->codec_id;
119 rtsp_st->dynamic_handler= handler;
120 if(handler->open) {
121 rtsp_st->dynamic_protocol_context= handler->open();
122 }
d1ccf0e0
RD
123 break;
124 }
4934884a
RM
125 handler= handler->next;
126 }
93ced3e8 127 } else {
d1ccf0e0
RD
128 /* We are in a standard case ( from http://www.iana.org/assignments/rtp-parameters) */
129 /* search into AVRtpPayloadTypes[] */
7ed19d7f 130 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
131 }
132
133 c = avcodec_find_decoder(codec->codec_id);
134 if (c && c->name)
7b49ce2e 135 c_name = c->name;
d1ccf0e0
RD
136 else
137 c_name = (char *)NULL;
138
139 if (c_name) {
140 get_word_sep(buf, sizeof(buf), "/", &p);
141 i = atoi(buf);
142 switch (codec->codec_type) {
143 case CODEC_TYPE_AUDIO:
144 av_log(codec, AV_LOG_DEBUG, " audio codec set to : %s\n", c_name);
145 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
146 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
147 if (i > 0) {
148 codec->sample_rate = i;
149 get_word_sep(buf, sizeof(buf), "/", &p);
150 i = atoi(buf);
151 if (i > 0)
152 codec->channels = i;
d0deedcb
RM
153 // TODO: there is a bug here; if it is a mono stream, and less than 22000Hz, faad upconverts to stereo and twice the
154 // frequency. No problem, but the sample rate is being set here by the sdp line. Upcoming patch forthcoming. (rdm)
d1ccf0e0
RD
155 }
156 av_log(codec, AV_LOG_DEBUG, " audio samplerate set to : %i\n", codec->sample_rate);
157 av_log(codec, AV_LOG_DEBUG, " audio channels set to : %i\n", codec->channels);
158 break;
159 case CODEC_TYPE_VIDEO:
160 av_log(codec, AV_LOG_DEBUG, " video codec set to : %s\n", c_name);
161 break;
162 default:
163 break;
164 }
165 return 0;
93ced3e8 166 }
d1ccf0e0
RD
167
168 return -1;
93ced3e8
FB
169}
170
171/* return the length and optionnaly the data */
172static int hex_to_data(uint8_t *data, const char *p)
173{
174 int c, len, v;
175
176 len = 0;
177 v = 1;
178 for(;;) {
179 skip_spaces(&p);
180 if (p == '\0')
181 break;
182 c = toupper((unsigned char)*p++);
183 if (c >= '0' && c <= '9')
184 c = c - '0';
185 else if (c >= 'A' && c <= 'F')
186 c = c - 'A' + 10;
187 else
188 break;
189 v = (v << 4) | c;
190 if (v & 0x100) {
191 if (data)
192 data[len] = v;
193 len++;
194 v = 1;
195 }
196 }
197 return len;
198}
199
d1ccf0e0
RD
200static void sdp_parse_fmtp_config(AVCodecContext *codec, char *attr, char *value)
201{
202 switch (codec->codec_id) {
203 case CODEC_ID_MPEG4:
cbee7a69 204 case CODEC_ID_AAC:
d1ccf0e0
RD
205 if (!strcmp(attr, "config")) {
206 /* decode the hexa encoded parameter */
207 int len = hex_to_data(NULL, value);
208 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
209 if (!codec->extradata)
210 return;
211 codec->extradata_size = len;
212 hex_to_data(codec->extradata, value);
213 }
214 break;
215 default:
216 break;
217 }
218 return;
219}
220
644e7acb 221typedef struct {
7b49ce2e 222 const char *str;
d1ccf0e0
RD
223 uint16_t type;
224 uint32_t offset;
644e7acb 225} AttrNameMap;
d1ccf0e0
RD
226
227/* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
228#define ATTR_NAME_TYPE_INT 0
229#define ATTR_NAME_TYPE_STR 1
644e7acb 230static const AttrNameMap attr_names[]=
d1ccf0e0 231{
be73a544
LA
232 {"SizeLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, sizelength)},
233 {"IndexLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexlength)},
234 {"IndexDeltaLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexdeltalength)},
235 {"profile-level-id", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, profile_level_id)},
236 {"StreamType", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, streamtype)},
237 {"mode", ATTR_NAME_TYPE_STR, offsetof(RTPPayloadData, mode)},
d1ccf0e0
RD
238 {NULL, -1, -1},
239};
240
d0deedcb
RM
241/** parse the attribute line from the fmtp a line of an sdp resonse. This is broken out as a function
242* because it is used in rtp_h264.c, which is forthcoming.
243*/
244int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size)
245{
246 skip_spaces(p);
247 if(**p)
248 {
249 get_word_sep(attr, attr_size, "=", p);
250 if (**p == '=')
251 (*p)++;
252 get_word_sep(value, value_size, ";", p);
253 if (**p == ';')
254 (*p)++;
255 return 1;
256 }
257 return 0;
258}
259
d1ccf0e0
RD
260/* parse a SDP line and save stream attributes */
261static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
262{
263 char attr[256];
264 char value[4096];
d1ccf0e0
RD
265 int i;
266
267 RTSPStream *rtsp_st = st->priv_data;
01f4895c 268 AVCodecContext *codec = st->codec;
be73a544 269 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
270
271 /* loop on each attribute */
1ad20f96
RM
272 while(rtsp_next_attr_and_value(&p, attr, sizeof(attr), value, sizeof(value)))
273 {
bb270c08 274 /* grab the codec extra_data from the config parameter of the fmtp line */
d1ccf0e0
RD
275 sdp_parse_fmtp_config(codec, attr, value);
276 /* Looking for a known attribute */
277 for (i = 0; attr_names[i].str; ++i) {
278 if (!strcasecmp(attr, attr_names[i].str)) {
279 if (attr_names[i].type == ATTR_NAME_TYPE_INT)
280 *(int *)((char *)rtp_payload_data + attr_names[i].offset) = atoi(value);
281 else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
282 *(char **)((char *)rtp_payload_data + attr_names[i].offset) = av_strdup(value);
bb270c08 283 }
93ced3e8 284 }
93ced3e8
FB
285 }
286}
287
31693e00
RM
288/** Parse a string \p in the form of Range:npt=xx-xx, and determine the start
289 * and end time.
290 * Used for seeking in the rtp stream.
291 */
292static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
293{
294 char buf[256];
295
296 skip_spaces(&p);
f7d78f36 297 if (!av_stristart(p, "npt=", &p))
31693e00
RM
298 return;
299
300 *start = AV_NOPTS_VALUE;
301 *end = AV_NOPTS_VALUE;
302
303 get_word_sep(buf, sizeof(buf), "-", &p);
304 *start = parse_date(buf, 1);
305 if (*p == '-') {
306 p++;
307 get_word_sep(buf, sizeof(buf), "-", &p);
308 *end = parse_date(buf, 1);
309 }
310// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
311// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
312}
313
93ced3e8
FB
314typedef struct SDPParseState {
315 /* SDP only */
316 struct in_addr default_ip;
317 int default_ttl;
cb760a47 318 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
319} SDPParseState;
320
321static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
322 int letter, const char *buf)
323{
8b1ab7bf 324 RTSPState *rt = s->priv_data;
1617ad97
FB
325 char buf1[64], st_type[64];
326 const char *p;
fb65d2ca
DP
327 enum CodecType codec_type;
328 int payload_type, i;
1617ad97
FB
329 AVStream *st;
330 RTSPStream *rtsp_st;
93ced3e8
FB
331 struct in_addr sdp_ip;
332 int ttl;
333
1617ad97
FB
334#ifdef DEBUG
335 printf("sdp: %c='%s'\n", letter, buf);
336#endif
337
338 p = buf;
cb760a47
RB
339 if (s1->skip_media && letter != 'm')
340 return;
1617ad97 341 switch(letter) {
93ced3e8
FB
342 case 'c':
343 get_word(buf1, sizeof(buf1), &p);
344 if (strcmp(buf1, "IN") != 0)
345 return;
346 get_word(buf1, sizeof(buf1), &p);
347 if (strcmp(buf1, "IP4") != 0)
348 return;
349 get_word_sep(buf1, sizeof(buf1), "/", &p);
350 if (inet_aton(buf1, &sdp_ip) == 0)
351 return;
352 ttl = 16;
353 if (*p == '/') {
354 p++;
355 get_word_sep(buf1, sizeof(buf1), "/", &p);
356 ttl = atoi(buf1);
357 }
358 if (s->nb_streams == 0) {
359 s1->default_ip = sdp_ip;
360 s1->default_ttl = ttl;
361 } else {
362 st = s->streams[s->nb_streams - 1];
363 rtsp_st = st->priv_data;
364 rtsp_st->sdp_ip = sdp_ip;
365 rtsp_st->sdp_ttl = ttl;
366 }
367 break;
1617ad97 368 case 's':
da61e413 369 av_metadata_set(&s->metadata, "title", p);
1617ad97
FB
370 break;
371 case 'i':
372 if (s->nb_streams == 0) {
da61e413 373 av_metadata_set(&s->metadata, "comment", p);
1617ad97
FB
374 break;
375 }
376 break;
377 case 'm':
378 /* new stream */
cb760a47 379 s1->skip_media = 0;
1617ad97
FB
380 get_word(st_type, sizeof(st_type), &p);
381 if (!strcmp(st_type, "audio")) {
382 codec_type = CODEC_TYPE_AUDIO;
383 } else if (!strcmp(st_type, "video")) {
384 codec_type = CODEC_TYPE_VIDEO;
090438cc
RB
385 } else if (!strcmp(st_type, "application")) {
386 codec_type = CODEC_TYPE_DATA;
1617ad97 387 } else {
cb760a47 388 s1->skip_media = 1;
1617ad97
FB
389 return;
390 }
1617ad97
FB
391 rtsp_st = av_mallocz(sizeof(RTSPStream));
392 if (!rtsp_st)
393 return;
8b1ab7bf
FB
394 rtsp_st->stream_index = -1;
395 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
396
397 rtsp_st->sdp_ip = s1->default_ip;
398 rtsp_st->sdp_ttl = s1->default_ttl;
399
93ced3e8
FB
400 get_word(buf1, sizeof(buf1), &p); /* port */
401 rtsp_st->sdp_port = atoi(buf1);
402
403 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 404
93ced3e8
FB
405 /* XXX: handle list of formats */
406 get_word(buf1, sizeof(buf1), &p); /* format list */
407 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 408
7ed19d7f 409 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
410 /* no corresponding stream */
411 } else {
412 st = av_new_stream(s, 0);
413 if (!st)
414 return;
415 st->priv_data = rtsp_st;
416 rtsp_st->stream_index = st->index;
01f4895c 417 st->codec->codec_type = codec_type;
d1ccf0e0 418 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 419 /* if standard payload type, we can find the codec right now */
bf6d9818 420 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
421 }
422 }
1617ad97 423 /* put a default control url */
75e61b0e 424 av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url));
1617ad97
FB
425 break;
426 case 'a':
f7d78f36 427 if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
1617ad97
FB
428 char proto[32];
429 /* get the control url */
430 st = s->streams[s->nb_streams - 1];
431 rtsp_st = st->priv_data;
115329f1 432
1617ad97 433 /* XXX: may need to add full url resolution */
6ba5cbc6 434 url_split(proto, sizeof(proto), NULL, 0, NULL, 0, NULL, NULL, 0, p);
1617ad97
FB
435 if (proto[0] == '\0') {
436 /* relative control URL */
75e61b0e
MR
437 av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url));
438 av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 439 } else {
75e61b0e 440 av_strlcpy(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 441 }
83d14c85 442 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 443 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 444 get_word(buf1, sizeof(buf1), &p);
93ced3e8 445 payload_type = atoi(buf1);
83d14c85 446 st = s->streams[s->nb_streams - 1];
ff16f551
RB
447 rtsp_st = st->priv_data;
448 sdp_parse_rtpmap(st->codec, rtsp_st, payload_type, p);
f7d78f36 449 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 450 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 451 get_word(buf1, sizeof(buf1), &p);
93ced3e8
FB
452 payload_type = atoi(buf1);
453 for(i = 0; i < s->nb_streams;i++) {
454 st = s->streams[i];
455 rtsp_st = st->priv_data;
456 if (rtsp_st->sdp_payload_type == payload_type) {
4934884a 457 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 458 if(!rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf)) {
4934884a
RM
459 sdp_parse_fmtp(st, p);
460 }
461 } else {
ed787542 462 sdp_parse_fmtp(st, p);
4934884a 463 }
93ced3e8
FB
464 }
465 }
f7d78f36 466 } else if(av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
467 // let dynamic protocol handlers have a stab at the line.
468 get_word(buf1, sizeof(buf1), &p);
469 payload_type = atoi(buf1);
470 for(i = 0; i < s->nb_streams;i++) {
471 st = s->streams[i];
472 rtsp_st = st->priv_data;
473 if (rtsp_st->sdp_payload_type == payload_type) {
474 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 475 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf);
d0deedcb
RM
476 }
477 }
478 }
f7d78f36 479 } else if(av_strstart(p, "range:", &p)) {
31693e00
RM
480 int64_t start, end;
481
482 // this is so that seeking on a streamed file can work.
483 rtsp_parse_range_npt(p, &start, &end);
484 s->start_time= start;
485 s->duration= (end==AV_NOPTS_VALUE)?AV_NOPTS_VALUE:end-start; // AV_NOPTS_VALUE means live broadcast (and can't seek)
119b4668
RB
486 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
487 if (atoi(p) == 1)
488 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
489 } else {
490 if (rt->server_type == RTSP_SERVER_WMS)
491 ff_wms_parse_sdp_a_line(s, p);
492 if (s->nb_streams > 0) {
c4a3d032
RB
493 if (rt->server_type == RTSP_SERVER_REAL)
494 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
495
496 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
497 if (rtsp_st->dynamic_handler &&
498 rtsp_st->dynamic_handler->parse_sdp_a_line)
499 rtsp_st->dynamic_handler->parse_sdp_a_line(s, s->nb_streams - 1,
500 rtsp_st->dynamic_protocol_context, buf);
1a30d541 501 }
1617ad97
FB
502 }
503 break;
504 }
505}
506
5c91a675 507static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
508{
509 const char *p;
510 int letter;
9211bcdd
RB
511 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
512 * contain long SDP lines containing complete ASF Headers (several
513 * kB) or arrays of MDPR (RM stream descriptor) headers plus
514 * "rulebooks" describing their properties. Therefore, the SDP line
515 * buffer is large. */
e322d3f5 516 char buf[8192], *q;
93ced3e8 517 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 518
93ced3e8 519 memset(s1, 0, sizeof(SDPParseState));
1617ad97
FB
520 p = content;
521 for(;;) {
522 skip_spaces(&p);
523 letter = *p;
524 if (letter == '\0')
525 break;
526 p++;
527 if (*p != '=')
528 goto next_line;
529 p++;
530 /* get the content */
531 q = buf;
b6892136 532 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
533 if ((q - buf) < sizeof(buf) - 1)
534 *q++ = *p;
535 p++;
536 }
537 *q = '\0';
93ced3e8 538 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
539 next_line:
540 while (*p != '\n' && *p != '\0')
541 p++;
542 if (*p == '\n')
543 p++;
544 }
545 return 0;
546}
547
548static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
549{
550 const char *p;
551 int v;
552
553 p = *pp;
554 skip_spaces(&p);
555 v = strtol(p, (char **)&p, 10);
556 if (*p == '-') {
557 p++;
558 *min_ptr = v;
559 v = strtol(p, (char **)&p, 10);
560 *max_ptr = v;
561 } else {
562 *min_ptr = v;
563 *max_ptr = v;
564 }
565 *pp = p;
566}
567
568/* XXX: only one transport specification is parsed */
a9e534d5 569static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
570{
571 char transport_protocol[16];
572 char profile[16];
573 char lower_transport[16];
574 char parameter[16];
575 RTSPTransportField *th;
576 char buf[256];
115329f1 577
1617ad97 578 reply->nb_transports = 0;
115329f1 579
1617ad97
FB
580 for(;;) {
581 skip_spaces(&p);
582 if (*p == '\0')
583 break;
584
585 th = &reply->transports[reply->nb_transports];
586
115329f1 587 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97
FB
588 "/", &p);
589 if (*p == '/')
590 p++;
e1502118 591 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
592 get_word_sep(profile, sizeof(profile), "/;,", &p);
593 lower_transport[0] = '\0';
594 /* rtp/avp/<protocol> */
595 if (*p == '/') {
596 p++;
597 get_word_sep(lower_transport, sizeof(lower_transport),
598 ";,", &p);
119b4668
RB
599 }
600 th->transport = RTSP_TRANSPORT_RTP;
601 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
602 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 603 /* x-pn-tng/<protocol> */
e1502118
LB
604 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
605 profile[0] = '\0';
119b4668 606 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 607 }
b6892136 608 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 609 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 610 else
90abbdba 611 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 612
1617ad97
FB
613 if (*p == ';')
614 p++;
615 /* get each parameter */
616 while (*p != '\0' && *p != ',') {
617 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
618 if (!strcmp(parameter, "port")) {
619 if (*p == '=') {
620 p++;
621 rtsp_parse_range(&th->port_min, &th->port_max, &p);
622 }
623 } else if (!strcmp(parameter, "client_port")) {
624 if (*p == '=') {
625 p++;
115329f1 626 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
627 &th->client_port_max, &p);
628 }
629 } else if (!strcmp(parameter, "server_port")) {
630 if (*p == '=') {
631 p++;
115329f1 632 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
633 &th->server_port_max, &p);
634 }
635 } else if (!strcmp(parameter, "interleaved")) {
636 if (*p == '=') {
637 p++;
115329f1 638 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
639 &th->interleaved_max, &p);
640 }
641 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
642 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
643 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
644 } else if (!strcmp(parameter, "ttl")) {
645 if (*p == '=') {
646 p++;
647 th->ttl = strtol(p, (char **)&p, 10);
648 }
649 } else if (!strcmp(parameter, "destination")) {
650 struct in_addr ipaddr;
651
652 if (*p == '=') {
653 p++;
654 get_word_sep(buf, sizeof(buf), ";,", &p);
115329f1 655 if (inet_aton(buf, &ipaddr))
1617ad97
FB
656 th->destination = ntohl(ipaddr.s_addr);
657 }
658 }
659 while (*p != ';' && *p != '\0' && *p != ',')
660 p++;
661 if (*p == ';')
662 p++;
663 }
664 if (*p == ',')
665 p++;
666
667 reply->nb_transports++;
668 }
669}
670
a9e534d5 671void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
672{
673 const char *p;
674
675 /* NOTE: we do case independent match for broken servers */
676 p = buf;
f7d78f36 677 if (av_stristart(p, "Session:", &p)) {
1617ad97 678 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
f7d78f36 679 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 680 reply->content_length = strtol(p, NULL, 10);
f7d78f36 681 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 682 rtsp_parse_transport(reply, p);
f7d78f36 683 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 684 reply->seq = strtol(p, NULL, 10);
f7d78f36 685 } else if (av_stristart(p, "Range:", &p)) {
31693e00 686 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
687 } else if (av_stristart(p, "RealChallenge1:", &p)) {
688 skip_spaces(&p);
689 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
690 } else if (av_stristart(p, "Server:", &p)) {
691 skip_spaces(&p);
692 av_strlcpy(reply->server, p, sizeof(reply->server));
1617ad97
FB
693 }
694}
695
2a42b5c3
LS
696static int url_readbuf(URLContext *h, unsigned char *buf, int size)
697{
698 int ret, len;
699
700 len = 0;
701 while (len < size) {
702 ret = url_read(h, buf+len, size-len);
703 if (ret < 1)
704 return ret;
705 len += ret;
706 }
707 return len;
708}
709
b7b8fc34
FB
710/* skip a RTP/TCP interleaved packet */
711static void rtsp_skip_packet(AVFormatContext *s)
712{
713 RTSPState *rt = s->priv_data;
714 int ret, len, len1;
715 uint8_t buf[1024];
716
2a42b5c3 717 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
718 if (ret != 3)
719 return;
80fb8234 720 len = AV_RB16(buf + 1);
b7b8fc34
FB
721#ifdef DEBUG
722 printf("skipping RTP packet len=%d\n", len);
723#endif
724 /* skip payload */
725 while (len > 0) {
726 len1 = len;
727 if (len1 > sizeof(buf))
728 len1 = sizeof(buf);
2a42b5c3 729 ret = url_readbuf(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
730 if (ret != len1)
731 return;
732 len -= len1;
733 }
734}
1617ad97 735
7e726132
RB
736/**
737 * Read a RTSP message from the server, or prepare to read data
738 * packets if we're reading data interleaved over the TCP/RTSP
739 * connection as well.
740 *
741 * @param s RTSP demuxer context
742 * @param reply pointer where the RTSP message header will be stored
743 * @param content_ptr pointer where the RTSP message body, if any, will
744 * be stored (length is in \p reply)
745 * @param return_on_interleaved_data whether the function may return if we
746 * encounter a data marker ('$'), which precedes data
747 * packets over interleaved TCP/RTSP connections. If this
748 * is set, this function will return 1 after encountering
749 * a '$'. If it is not set, the function will skip any
750 * data packets (if they are encountered), until a reply
751 * has been fully parsed. If no more data is available
752 * without parsing a reply, it will return an error.
753 *
754 * @returns 1 if a data packets is ready to be received, -1 on error,
755 * and 0 on success.
756 */
757static int
29b9f58b 758rtsp_read_reply (AVFormatContext *s, RTSPMessageHeader *reply,
7e726132 759 unsigned char **content_ptr, int return_on_interleaved_data)
1617ad97
FB
760{
761 RTSPState *rt = s->priv_data;
762 char buf[4096], buf1[1024], *q;
763 unsigned char ch;
764 const char *p;
7e726132 765 int ret, content_length, line_count = 0;
1617ad97
FB
766 unsigned char *content = NULL;
767
d541a7d2 768 memset(reply, 0, sizeof(*reply));
1617ad97 769
1617ad97 770 /* parse reply (XXX: use buffers) */
1617ad97
FB
771 rt->last_reply[0] = '\0';
772 for(;;) {
773 q = buf;
774 for(;;) {
7e726132
RB
775 ret = url_readbuf(rt->rtsp_hd, &ch, 1);
776#ifdef DEBUG_RTP_TCP
777 printf("ret=%d c=%02x [%c]\n", ret, ch, ch);
778#endif
779 if (ret != 1)
780 return -1;
1617ad97
FB
781 if (ch == '\n')
782 break;
b7b8fc34
FB
783 if (ch == '$') {
784 /* XXX: only parse it if first char on line ? */
7e726132
RB
785 if (return_on_interleaved_data) {
786 return 1;
787 } else
b7b8fc34
FB
788 rtsp_skip_packet(s);
789 } else if (ch != '\r') {
1617ad97
FB
790 if ((q - buf) < sizeof(buf) - 1)
791 *q++ = ch;
792 }
793 }
794 *q = '\0';
795#ifdef DEBUG
796 printf("line='%s'\n", buf);
797#endif
798 /* test if last line */
799 if (buf[0] == '\0')
800 break;
801 p = buf;
802 if (line_count == 0) {
803 /* get reply code */
804 get_word(buf1, sizeof(buf1), &p);
805 get_word(buf1, sizeof(buf1), &p);
806 reply->status_code = atoi(buf1);
807 } else {
808 rtsp_parse_line(reply, p);
75e61b0e
MR
809 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
810 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
811 }
812 line_count++;
813 }
115329f1 814
1617ad97 815 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 816 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 817
1617ad97
FB
818 content_length = reply->content_length;
819 if (content_length > 0) {
820 /* leave some room for a trailing '\0' (useful for simple parsing) */
821 content = av_malloc(content_length + 1);
2a42b5c3 822 (void)url_readbuf(rt->rtsp_hd, content, content_length);
1617ad97
FB
823 content[content_length] = '\0';
824 }
825 if (content_ptr)
826 *content_ptr = content;
e2e2e7dd
AB
827 else
828 av_free(content);
7e726132
RB
829
830 return 0;
1617ad97
FB
831}
832
29b9f58b
RB
833static void rtsp_send_cmd(AVFormatContext *s,
834 const char *cmd, RTSPMessageHeader *reply,
835 unsigned char **content_ptr)
836{
837 RTSPState *rt = s->priv_data;
838 char buf[4096], buf1[1024];
839
840 rt->seq++;
841 av_strlcpy(buf, cmd, sizeof(buf));
842 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
843 av_strlcat(buf, buf1, sizeof(buf));
844 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
845 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
846 av_strlcat(buf, buf1, sizeof(buf));
847 }
848 av_strlcat(buf, "\r\n", sizeof(buf));
849#ifdef DEBUG
850 printf("Sending:\n%s--\n", buf);
851#endif
852 url_write(rt->rtsp_hd, buf, strlen(buf));
853
7e726132 854 rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
855}
856
1617ad97 857
8b1ab7bf
FB
858/* close and free RTSP streams */
859static void rtsp_close_streams(RTSPState *rt)
860{
861 int i;
862 RTSPStream *rtsp_st;
863
864 for(i=0;i<rt->nb_rtsp_streams;i++) {
865 rtsp_st = rt->rtsp_streams[i];
866 if (rtsp_st) {
0a861b6f 867 if (rtsp_st->transport_priv) {
accc248f 868 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 869 ff_rdt_parse_close(rtsp_st->transport_priv);
accc248f 870 else
0a861b6f 871 rtp_parse_close(rtsp_st->transport_priv);
accc248f 872 }
8b1ab7bf
FB
873 if (rtsp_st->rtp_handle)
874 url_close(rtsp_st->rtp_handle);
4934884a
RM
875 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
876 rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
8b1ab7bf 877 }
8b1ab7bf
FB
878 }
879 av_free(rt->rtsp_streams);
1a30d541
RB
880 if (rt->asf_ctx) {
881 av_close_input_stream (rt->asf_ctx);
882 rt->asf_ctx = NULL;
883 }
8b1ab7bf
FB
884}
885
ee0cb67f
RB
886static int
887rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
888{
accc248f 889 RTSPState *rt = s->priv_data;
ee0cb67f
RB
890 AVStream *st = NULL;
891
a6789dca
RB
892 /* open the RTP context */
893 if (rtsp_st->stream_index >= 0)
894 st = s->streams[rtsp_st->stream_index];
895 if (!st)
896 s->ctx_flags |= AVFMTCTX_NOHEADER;
accc248f
RB
897
898 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 899 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
accc248f
RB
900 rtsp_st->dynamic_protocol_context,
901 rtsp_st->dynamic_handler);
902 else
0a861b6f 903 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
5c918b27
RB
904 rtsp_st->sdp_payload_type,
905 &rtsp_st->rtp_payload_data);
a6789dca 906
0a861b6f 907 if (!rtsp_st->transport_priv) {
a6789dca 908 return AVERROR(ENOMEM);
accc248f 909 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
a6789dca 910 if(rtsp_st->dynamic_handler) {
0a861b6f 911 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
99a1d191
RB
912 rtsp_st->dynamic_protocol_context,
913 rtsp_st->dynamic_handler);
ee0cb67f 914 }
a6789dca 915 }
ee0cb67f
RB
916
917 return 0;
918}
919
53620bba
RB
920/**
921 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
922 */
923static int
e9dea59f 924make_setup_request (AVFormatContext *s, const char *host, int port,
90abbdba 925 int lower_transport, const char *real_challenge)
1617ad97
FB
926{
927 RTSPState *rt = s->priv_data;
f830c9a4 928 int rtx, j, i, err, interleave = 0;
1617ad97 929 RTSPStream *rtsp_st;
a9e534d5 930 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 931 char cmd[2048];
e9dea59f
RB
932 const char *trans_pref;
933
119b4668 934 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
935 trans_pref = "x-pn-tng";
936 else
937 trans_pref = "RTP/AVP";
115329f1 938
1617ad97
FB
939 /* for each stream, make the setup request */
940 /* XXX: we assume the same server is used for the control of each
941 RTSP stream */
d1ccf0e0
RD
942
943 for(j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
944 char transport[2048];
945
f830c9a4
RB
946 /**
947 * WMS serves all UDP data over a single connection, the RTX, which
948 * isn't necessarily the first in the SDP but has to be the first
949 * to be set up, else the second/third SETUP will fail with a 461.
950 */
951 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
952 rt->server_type == RTSP_SERVER_WMS) {
953 if (i == 0) {
954 /* rtx first */
955 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
956 int len = strlen(rt->rtsp_streams[rtx]->control_url);
957 if (len >= 4 &&
958 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, "/rtx"))
959 break;
960 }
961 if (rtx == rt->nb_rtsp_streams)
962 return -1; /* no RTX found */
963 rtsp_st = rt->rtsp_streams[rtx];
964 } else
965 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
966 } else
2fea9650 967 rtsp_st = rt->rtsp_streams[i];
1617ad97 968
1617ad97 969 /* RTP/UDP */
90abbdba 970 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 971 char buf[256];
85fb7b34 972
f830c9a4
RB
973 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
974 port = reply->transports[0].client_port_min;
975 goto have_port;
976 }
977
85fb7b34 978 /* first try in specified port range */
d1ccf0e0
RD
979 if (RTSP_RTP_PORT_MIN != 0) {
980 while(j <= RTSP_RTP_PORT_MAX) {
b316aa1a 981 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d", host, j);
ecdcbbf6 982 j += 2; /* we will use two port by rtp stream (rtp and rtcp) */
dbf30963 983 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) {
85fb7b34 984 goto rtp_opened;
d1ccf0e0 985 }
85fb7b34 986 }
1617ad97 987 }
85fb7b34 988
d1ccf0e0
RD
989/* then try on any port
990** if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
991** err = AVERROR_INVALIDDATA;
992** goto fail;
993** }
994*/
85fb7b34
FB
995
996 rtp_opened:
8b1ab7bf 997 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 998 have_port:
0ad306bc 999 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1000 "%s/UDP;", trans_pref);
1001 if (rt->server_type != RTSP_SERVER_REAL)
1002 av_strlcat(transport, "unicast;", sizeof(transport));
1003 av_strlcatf(transport, sizeof(transport),
1004 "client_port=%d", port);
f830c9a4
RB
1005 if (rt->transport == RTSP_TRANSPORT_RTP &&
1006 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1007 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1008 }
1009
1010 /* RTP/TCP */
90abbdba 1011 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1012 /** For WMS streams, the application streams are only used for
1013 * UDP. When trying to set it up for TCP streams, the server
1014 * will return an error. Therefore, we skip those streams. */
1015 if (rt->server_type == RTSP_SERVER_WMS &&
1016 s->streams[rtsp_st->stream_index]->codec->codec_type == CODEC_TYPE_DATA)
1017 continue;
0ad306bc 1018 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1019 "%s/TCP;", trans_pref);
1020 if (rt->server_type == RTSP_SERVER_WMS)
1021 av_strlcat(transport, "unicast;", sizeof(transport));
1022 av_strlcatf(transport, sizeof(transport),
1023 "interleaved=%d-%d",
1024 interleave, interleave + 1);
1025 interleave += 2;
1617ad97
FB
1026 }
1027
90abbdba 1028 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1029 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1030 "%s/UDP;multicast", trans_pref);
1617ad97 1031 }
d1c6e47c
RB
1032 if (rt->server_type == RTSP_SERVER_REAL ||
1033 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1034 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1035 snprintf(cmd, sizeof(cmd),
b6892136
FB
1036 "SETUP %s RTSP/1.0\r\n"
1037 "Transport: %s\r\n",
1617ad97 1038 rtsp_st->control_url, transport);
2e889ae4 1039 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1040 char real_res[41], real_csum[9];
1041 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1042 real_challenge);
1043 av_strlcatf(cmd, sizeof(cmd),
1044 "If-Match: %s\r\n"
1045 "RealChallenge2: %s, sd=%s\r\n",
1046 rt->session_id, real_res, real_csum);
1047 }
1617ad97 1048 rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1049 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1050 err = 1;
1051 goto fail;
7e6ca34f
RB
1052 } else if (reply->status_code != RTSP_STATUS_OK ||
1053 reply->nb_transports != 1) {
1617ad97
FB
1054 err = AVERROR_INVALIDDATA;
1055 goto fail;
1056 }
1057
1058 /* XXX: same protocol for all streams is required */
1059 if (i > 0) {
119b4668
RB
1060 if (reply->transports[0].lower_transport != rt->lower_transport ||
1061 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1062 err = AVERROR_INVALIDDATA;
1063 goto fail;
1064 }
1065 } else {
90abbdba 1066 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1067 rt->transport = reply->transports[0].transport;
1617ad97
FB
1068 }
1069
1070 /* close RTP connection if not choosen */
90abbdba
RB
1071 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1072 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1073 url_close(rtsp_st->rtp_handle);
1074 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1075 }
1076
90abbdba
RB
1077 switch(reply->transports[0].lower_transport) {
1078 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1079 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1080 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1081 break;
115329f1 1082
90abbdba 1083 case RTSP_LOWER_TRANSPORT_UDP:
1617ad97
FB
1084 {
1085 char url[1024];
115329f1 1086
1617ad97 1087 /* XXX: also use address if specified */
115329f1 1088 snprintf(url, sizeof(url), "rtp://%s:%d",
1617ad97 1089 host, reply->transports[0].server_port_min);
f830c9a4
RB
1090 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1091 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1617ad97
FB
1092 err = AVERROR_INVALIDDATA;
1093 goto fail;
1094 }
1095 }
1096 break;
90abbdba 1097 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1617ad97
FB
1098 {
1099 char url[1024];
d02678ec 1100 struct in_addr in;
1617ad97 1101
d02678ec 1102 in.s_addr = htonl(reply->transports[0].destination);
35b74c3d 1103 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
d02678ec
LB
1104 inet_ntoa(in),
1105 reply->transports[0].port_min,
1106 reply->transports[0].ttl);
dbf30963 1107 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1617ad97
FB
1108 err = AVERROR_INVALIDDATA;
1109 goto fail;
1110 }
1111 }
1112 break;
1113 }
d1ccf0e0 1114
ee0cb67f 1115 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1116 goto fail;
1617ad97
FB
1117 }
1118
2e889ae4 1119 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1120 rt->need_subscription = 1;
1121
53620bba
RB
1122 return 0;
1123
1124fail:
8a8754d8
RB
1125 for (i=0; i<rt->nb_rtsp_streams; i++) {
1126 if (rt->rtsp_streams[i]->rtp_handle) {
1127 url_close(rt->rtsp_streams[i]->rtp_handle);
1128 rt->rtsp_streams[i]->rtp_handle = NULL;
1129 }
1130 }
53620bba
RB
1131 return err;
1132}
1133
1134static int rtsp_read_header(AVFormatContext *s,
1135 AVFormatParameters *ap)
1136{
1137 RTSPState *rt = s->priv_data;
1138 char host[1024], path[1024], tcpname[1024], cmd[2048], *option_list, *option;
1139 URLContext *rtsp_hd;
1140 int port, ret, err;
a9e534d5 1141 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1142 unsigned char *content = NULL;
90abbdba 1143 int lower_transport_mask = 0;
1cf151e9 1144 char real_challenge[64];
53620bba
RB
1145
1146 /* extract hostname and port */
1147 url_split(NULL, 0, NULL, 0,
1148 host, sizeof(host), &port, path, sizeof(path), s->filename);
1149 if (port < 0)
1150 port = RTSP_DEFAULT_PORT;
1151
1152 /* search for options */
1153 option_list = strchr(path, '?');
1154 if (option_list) {
1155 /* remove the options from the path */
1156 *option_list++ = 0;
1157 while(option_list) {
1158 /* move the option pointer */
1159 option = option_list;
1160 option_list = strchr(option_list, '&');
1161 if (option_list)
1162 *(option_list++) = 0;
1163 /* handle the options */
1164 if (strcmp(option, "udp") == 0)
90abbdba 1165 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
53620bba 1166 else if (strcmp(option, "multicast") == 0)
90abbdba 1167 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
53620bba 1168 else if (strcmp(option, "tcp") == 0)
90abbdba 1169 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
53620bba
RB
1170 }
1171 }
1172
90abbdba 1173 if (!lower_transport_mask)
2a1d51c5 1174 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba
RB
1175
1176 /* open the tcp connexion */
1177 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
1178 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0)
1179 return AVERROR(EIO);
1180 rt->rtsp_hd = rtsp_hd;
1181 rt->seq = 0;
1182
1cf151e9
RB
1183 /* request options supported by the server; this also detects server type */
1184 for (rt->server_type = RTSP_SERVER_RTP;;) {
1185 snprintf(cmd, sizeof(cmd),
1186 "OPTIONS %s RTSP/1.0\r\n", s->filename);
2e889ae4 1187 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1188 av_strlcat(cmd,
1189 /**
1190 * The following entries are required for proper
1191 * streaming from a Realmedia server. They are
1192 * interdependent in some way although we currently
1193 * don't quite understand how. Values were copied
1194 * from mplayer SVN r23589.
1195 * @param CompanyID is a 16-byte ID in base64
1196 * @param ClientChallenge is a 16-byte ID in hex
1197 */
1198 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1199 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1200 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1201 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1202 sizeof(cmd));
1203 rtsp_send_cmd(s, cmd, reply, NULL);
1204 if (reply->status_code != RTSP_STATUS_OK) {
1205 err = AVERROR_INVALIDDATA;
1206 goto fail;
1207 }
1208
1209 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1210 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1211 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1212 continue;
7a86bafa
RB
1213 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1214 rt->server_type = RTSP_SERVER_WMS;
2e889ae4 1215 } else if (rt->server_type == RTSP_SERVER_REAL) {
1cf151e9
RB
1216 strcpy(real_challenge, reply->real_challenge);
1217 }
1218 break;
1219 }
1220
53620bba
RB
1221 /* describe the stream */
1222 snprintf(cmd, sizeof(cmd),
1223 "DESCRIBE %s RTSP/1.0\r\n"
1224 "Accept: application/sdp\r\n",
1225 s->filename);
2e889ae4 1226 if (rt->server_type == RTSP_SERVER_REAL) {
897ade1b
RB
1227 /**
1228 * The Require: attribute is needed for proper streaming from
1229 * Realmedia servers.
1230 */
1231 av_strlcat(cmd,
1232 "Require: com.real.retain-entity-for-setup\r\n",
1233 sizeof(cmd));
1234 }
53620bba
RB
1235 rtsp_send_cmd(s, cmd, reply, &content);
1236 if (!content) {
1237 err = AVERROR_INVALIDDATA;
1238 goto fail;
1239 }
1240 if (reply->status_code != RTSP_STATUS_OK) {
1241 err = AVERROR_INVALIDDATA;
1242 goto fail;
1243 }
1244
1245 /* now we got the SDP description, we parse it */
1246 ret = sdp_parse(s, (const char *)content);
1247 av_freep(&content);
1248 if (ret < 0) {
1249 err = AVERROR_INVALIDDATA;
1250 goto fail;
1251 }
1252
8a8754d8 1253 do {
90abbdba 1254 int lower_transport = ff_log2_tab[lower_transport_mask & ~(lower_transport_mask - 1)];
8a8754d8 1255
90abbdba 1256 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1257 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1258 real_challenge : NULL);
8a8754d8 1259 if (err < 0)
7e6ca34f 1260 goto fail;
90abbdba
RB
1261 lower_transport_mask &= ~(1 << lower_transport);
1262 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1263 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1264 goto fail;
1265 }
1266 } while (err);
53620bba 1267
ff762d6e
FB
1268 rt->state = RTSP_STATE_IDLE;
1269 rt->seek_timestamp = 0; /* default is to start stream at position
1270 zero */
c04c3282 1271 if (ap->initial_pause) {
ff762d6e
FB
1272 /* do not start immediately */
1273 } else {
1274 if (rtsp_read_play(s) < 0) {
1275 err = AVERROR_INVALIDDATA;
1617ad97
FB
1276 goto fail;
1277 }
1278 }
1617ad97
FB
1279 return 0;
1280 fail:
8b1ab7bf 1281 rtsp_close_streams(rt);
1617ad97
FB
1282 av_freep(&content);
1283 url_close(rt->rtsp_hd);
1284 return err;
1285}
1286
8b1ab7bf
FB
1287static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1288 uint8_t *buf, int buf_size)
1617ad97
FB
1289{
1290 RTSPState *rt = s->priv_data;
b6892136 1291 int id, len, i, ret;
1617ad97 1292 RTSPStream *rtsp_st;
1617ad97 1293
b6892136
FB
1294#ifdef DEBUG_RTP_TCP
1295 printf("tcp_read_packet:\n");
1296#endif
1617ad97
FB
1297 redo:
1298 for(;;) {
7e726132
RB
1299 RTSPMessageHeader reply;
1300
1301 ret = rtsp_read_reply(s, &reply, NULL, 1);
1302 if (ret == -1)
8b1ab7bf 1303 return -1;
7e726132 1304 if (ret == 1) /* received '$' */
1617ad97 1305 break;
7e726132 1306 /* XXX: parse message */
1617ad97 1307 }
2a42b5c3 1308 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b6892136 1309 if (ret != 3)
8b1ab7bf 1310 return -1;
b6892136 1311 id = buf[0];
80fb8234 1312 len = AV_RB16(buf + 1);
b6892136
FB
1313#ifdef DEBUG_RTP_TCP
1314 printf("id=%d len=%d\n", id, len);
1315#endif
8b1ab7bf 1316 if (len > buf_size || len < 12)
1617ad97
FB
1317 goto redo;
1318 /* get the data */
2a42b5c3 1319 ret = url_readbuf(rt->rtsp_hd, buf, len);
b6892136 1320 if (ret != len)
8b1ab7bf 1321 return -1;
985b05d3 1322 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1323 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1324 return -1;
115329f1 1325
1617ad97 1326 /* find the matching stream */
8b1ab7bf
FB
1327 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1328 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1329 if (id >= rtsp_st->interleaved_min &&
1330 id <= rtsp_st->interleaved_max)
1617ad97
FB
1331 goto found;
1332 }
1333 goto redo;
1334 found:
8b1ab7bf
FB
1335 *prtsp_st = rtsp_st;
1336 return len;
1617ad97
FB
1337}
1338
115329f1 1339static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
8b1ab7bf 1340 uint8_t *buf, int buf_size)
1617ad97 1341{
8b1ab7bf 1342 RTSPState *rt = s->priv_data;
1617ad97
FB
1343 RTSPStream *rtsp_st;
1344 fd_set rfds;
7e726132 1345 int fd, fd_max, n, i, ret, tcp_fd;
1617ad97
FB
1346 struct timeval tv;
1347
1348 for(;;) {
b7b8fc34 1349 if (url_interrupt_cb())
a960a1e0 1350 return AVERROR(EINTR);
1617ad97 1351 FD_ZERO(&rfds);
7e726132
RB
1352 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1353 FD_SET(tcp_fd, &rfds);
8b1ab7bf
FB
1354 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1355 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1356 if (rtsp_st->rtp_handle) {
2fea9650
RB
1357 /* currently, we cannot probe RTCP handle because of
1358 * blocking restrictions */
bc8763cd
RB
1359 fd = url_get_file_handle(rtsp_st->rtp_handle);
1360 if (fd > fd_max)
1361 fd_max = fd;
1362 FD_SET(fd, &rfds);
f830c9a4 1363 }
1617ad97 1364 }
1617ad97 1365 tv.tv_sec = 0;
b7b8fc34 1366 tv.tv_usec = 100 * 1000;
1617ad97
FB
1367 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1368 if (n > 0) {
8b1ab7bf
FB
1369 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1370 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1371 if (rtsp_st->rtp_handle) {
bc8763cd
RB
1372 fd = url_get_file_handle(rtsp_st->rtp_handle);
1373 if (FD_ISSET(fd, &rfds)) {
2fea9650
RB
1374 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1375 if (ret > 0) {
1376 *prtsp_st = rtsp_st;
1377 return ret;
1378 }
1617ad97
FB
1379 }
1380 }
1381 }
7e726132
RB
1382 if (FD_ISSET(tcp_fd, &rfds)) {
1383 RTSPMessageHeader reply;
1384
1385 rtsp_read_reply(s, &reply, NULL, 0);
1386 /* XXX: parse message */
1387 }
1617ad97
FB
1388 }
1389 }
1390}
1391
1392static int rtsp_read_packet(AVFormatContext *s,
1393 AVPacket *pkt)
1394{
1395 RTSPState *rt = s->priv_data;
8b1ab7bf
FB
1396 RTSPStream *rtsp_st;
1397 int ret, len;
e49906c3 1398 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
8b1ab7bf 1399
572c6a38 1400 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1401 int i;
a9e534d5 1402 RTSPMessageHeader reply1, *reply = &reply1;
572c6a38 1403 enum AVDiscard cache[MAX_STREAMS];
1256d16b
RB
1404 char cmd[1024];
1405
572c6a38
RB
1406 for (i = 0; i < s->nb_streams; i++)
1407 cache[i] = s->streams[i]->discard;
1408
1409 if (!rt->need_subscription) {
1410 if (memcmp (cache, rt->real_setup_cache,
1411 sizeof(enum AVDiscard) * s->nb_streams)) {
1412 av_strlcatf(cmd, sizeof(cmd),
1413 "SET_PARAMETER %s RTSP/1.0\r\n"
1414 "Unsubscribe: %s\r\n",
1415 s->filename, rt->last_subscription);
1416 rtsp_send_cmd(s, cmd, reply, NULL);
1417 if (reply->status_code != RTSP_STATUS_OK)
1418 return AVERROR_INVALIDDATA;
1419 rt->need_subscription = 1;
1420 }
1256d16b 1421 }
1256d16b 1422
572c6a38
RB
1423 if (rt->need_subscription) {
1424 int r, rule_nr, first = 1;
1425
1426 memcpy(rt->real_setup_cache, cache,
1427 sizeof(enum AVDiscard) * s->nb_streams);
1428 rt->last_subscription[0] = 0;
1429
1430 snprintf(cmd, sizeof(cmd),
1431 "SET_PARAMETER %s RTSP/1.0\r\n"
1432 "Subscribe: ",
1433 s->filename);
1434 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1435 rule_nr = 0;
1436 for (r = 0; r < s->nb_streams; r++) {
1437 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1438 if (s->streams[r]->discard != AVDISCARD_ALL) {
1439 if (!first)
1440 av_strlcat(rt->last_subscription, ",",
1441 sizeof(rt->last_subscription));
1442 ff_rdt_subscribe_rule(
1443 rt->last_subscription,
1444 sizeof(rt->last_subscription), i, rule_nr);
1445 first = 0;
1446 }
1447 rule_nr++;
1448 }
1449 }
1450 }
1451 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1452 rtsp_send_cmd(s, cmd, reply, NULL);
1453 if (reply->status_code != RTSP_STATUS_OK)
1454 return AVERROR_INVALIDDATA;
1455 rt->need_subscription = 0;
1456
1457 if (rt->state == RTSP_STATE_PLAYING)
1458 rtsp_read_play (s);
1459 }
1256d16b
RB
1460 }
1461
8b1ab7bf 1462 /* get next frames from the same RTP packet */
0a861b6f 1463 if (rt->cur_transport_priv) {
119b4668 1464 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1465 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
4fce284c 1466 else
0a861b6f 1467 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
8b1ab7bf 1468 if (ret == 0) {
0a861b6f 1469 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1470 return 0;
1471 } else if (ret == 1) {
1472 return 0;
1473 } else {
0a861b6f 1474 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1475 }
1476 }
1617ad97 1477
8b1ab7bf
FB
1478 /* read next RTP packet */
1479 redo:
90abbdba 1480 switch(rt->lower_transport) {
1617ad97 1481 default:
90abbdba 1482 case RTSP_LOWER_TRANSPORT_TCP:
8b1ab7bf 1483 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1617ad97 1484 break;
90abbdba
RB
1485 case RTSP_LOWER_TRANSPORT_UDP:
1486 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
8b1ab7bf 1487 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
0a861b6f
RB
1488 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1489 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1617ad97
FB
1490 break;
1491 }
8b1ab7bf 1492 if (len < 0)
489b0d4d 1493 return len;
119b4668 1494 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1495 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
4fce284c 1496 else
0a861b6f 1497 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
8b1ab7bf
FB
1498 if (ret < 0)
1499 goto redo;
1500 if (ret == 1) {
1501 /* more packets may follow, so we save the RTP context */
0a861b6f 1502 rt->cur_transport_priv = rtsp_st->transport_priv;
8b1ab7bf
FB
1503 }
1504 return 0;
1617ad97
FB
1505}
1506
ff762d6e 1507static int rtsp_read_play(AVFormatContext *s)
b7b8fc34 1508{
ff762d6e 1509 RTSPState *rt = s->priv_data;
a9e534d5 1510 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1511 char cmd[1024];
1512
bc874dae 1513 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
ff762d6e 1514
2e889ae4 1515 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1516 if (rt->state == RTSP_STATE_PAUSED) {
1517 snprintf(cmd, sizeof(cmd),
1518 "PLAY %s RTSP/1.0\r\n",
1519 s->filename);
1520 } else {
1521 snprintf(cmd, sizeof(cmd),
1522 "PLAY %s RTSP/1.0\r\n"
1523 "Range: npt=%0.3f-\r\n",
1524 s->filename,
1525 (double)rt->seek_timestamp / AV_TIME_BASE);
1526 }
1527 rtsp_send_cmd(s, cmd, reply, NULL);
1528 if (reply->status_code != RTSP_STATUS_OK) {
1529 return -1;
1530 }
1256d16b 1531 }
5f86057f
RB
1532 rt->state = RTSP_STATE_PLAYING;
1533 return 0;
b7b8fc34
FB
1534}
1535
ff762d6e
FB
1536/* pause the stream */
1537static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1538{
ff762d6e 1539 RTSPState *rt = s->priv_data;
a9e534d5 1540 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1541 char cmd[1024];
1542
b7b8fc34 1543 rt = s->priv_data;
115329f1 1544
ff762d6e
FB
1545 if (rt->state != RTSP_STATE_PLAYING)
1546 return 0;
2e889ae4 1547 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1548 snprintf(cmd, sizeof(cmd),
1549 "PAUSE %s RTSP/1.0\r\n",
1550 s->filename);
1551 rtsp_send_cmd(s, cmd, reply, NULL);
1552 if (reply->status_code != RTSP_STATUS_OK) {
1553 return -1;
1554 }
1256d16b 1555 }
5f86057f
RB
1556 rt->state = RTSP_STATE_PAUSED;
1557 return 0;
b7b8fc34
FB
1558}
1559
115329f1 1560static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1561 int64_t timestamp, int flags)
ff762d6e
FB
1562{
1563 RTSPState *rt = s->priv_data;
115329f1 1564
50755217 1565 rt->seek_timestamp = av_rescale_q(timestamp, s->streams[stream_index]->time_base, AV_TIME_BASE_Q);
ff762d6e
FB
1566 switch(rt->state) {
1567 default:
1568 case RTSP_STATE_IDLE:
1569 break;
1570 case RTSP_STATE_PLAYING:
1571 if (rtsp_read_play(s) != 0)
1572 return -1;
1573 break;
1574 case RTSP_STATE_PAUSED:
1575 rt->state = RTSP_STATE_IDLE;
1576 break;
1577 }
1578 return 0;
1579}
1580
1617ad97
FB
1581static int rtsp_read_close(AVFormatContext *s)
1582{
1583 RTSPState *rt = s->priv_data;
a9e534d5 1584 RTSPMessageHeader reply1, *reply = &reply1;
1617ad97
FB
1585 char cmd[1024];
1586
b6892136 1587#if 0
1617ad97 1588 /* NOTE: it is valid to flush the buffer here */
90abbdba 1589 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1590 url_fclose(&rt->rtsp_gb);
1591 }
b6892136 1592#endif
115329f1 1593 snprintf(cmd, sizeof(cmd),
b6892136 1594 "TEARDOWN %s RTSP/1.0\r\n",
1617ad97
FB
1595 s->filename);
1596 rtsp_send_cmd(s, cmd, reply, NULL);
1597
8b1ab7bf 1598 rtsp_close_streams(rt);
1617ad97
FB
1599 url_close(rt->rtsp_hd);
1600 return 0;
1601}
1602
b250f9c6 1603#if CONFIG_RTSP_DEMUXER
d2a067d1 1604AVInputFormat rtsp_demuxer = {
1617ad97 1605 "rtsp",
bde15e74 1606 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1607 sizeof(RTSPState),
1608 rtsp_probe,
1609 rtsp_read_header,
1610 rtsp_read_packet,
1611 rtsp_read_close,
ff762d6e 1612 rtsp_read_seek,
bb76a117 1613 .flags = AVFMT_NOFILE,
ff762d6e
FB
1614 .read_play = rtsp_read_play,
1615 .read_pause = rtsp_read_pause,
1617ad97 1616};
96862926 1617#endif
1617ad97 1618
cb1fdc61 1619static int sdp_probe(AVProbeData *p1)
93ced3e8 1620{
0e1ceacd 1621 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1622
1623 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1624 while (p < p_end && *p != '\0') {
f7d78f36 1625 if (p + sizeof("c=IN IP4") - 1 < p_end && av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1626 return AVPROBE_SCORE_MAX / 2;
0e1ceacd
MN
1627
1628 while(p < p_end - 1 && *p != '\n') p++;
1629 if (++p >= p_end)
cb1fdc61 1630 break;
cb1fdc61
FB
1631 if (*p == '\r')
1632 p++;
1633 }
93ced3e8
FB
1634 return 0;
1635}
1636
1637#define SDP_MAX_SIZE 8192
1638
1639static int sdp_read_header(AVFormatContext *s,
1640 AVFormatParameters *ap)
1641{
8b1ab7bf 1642 RTSPState *rt = s->priv_data;
93ced3e8
FB
1643 RTSPStream *rtsp_st;
1644 int size, i, err;
1645 char *content;
1646 char url[1024];
1647
1648 /* read the whole sdp file */
1649 /* XXX: better loading */
1650 content = av_malloc(SDP_MAX_SIZE);
899681cd 1651 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1652 if (size <= 0) {
1653 av_free(content);
1654 return AVERROR_INVALIDDATA;
1655 }
1656 content[size] ='\0';
1657
1658 sdp_parse(s, content);
1659 av_free(content);
1660
1661 /* open each RTP stream */
8b1ab7bf
FB
1662 for(i=0;i<rt->nb_rtsp_streams;i++) {
1663 rtsp_st = rt->rtsp_streams[i];
115329f1 1664
d2bf42be 1665 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
115329f1 1666 inet_ntoa(rtsp_st->sdp_ip),
93ced3e8 1667 rtsp_st->sdp_port,
d2bf42be 1668 rtsp_st->sdp_port,
93ced3e8 1669 rtsp_st->sdp_ttl);
dbf30963 1670 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1671 err = AVERROR_INVALIDDATA;
1672 goto fail;
1673 }
ee0cb67f 1674 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1675 goto fail;
93ced3e8
FB
1676 }
1677 return 0;
1678 fail:
8b1ab7bf 1679 rtsp_close_streams(rt);
93ced3e8
FB
1680 return err;
1681}
1682
1683static int sdp_read_packet(AVFormatContext *s,
1684 AVPacket *pkt)
1685{
8b1ab7bf 1686 return rtsp_read_packet(s, pkt);
93ced3e8
FB
1687}
1688
1689static int sdp_read_close(AVFormatContext *s)
1690{
8b1ab7bf
FB
1691 RTSPState *rt = s->priv_data;
1692 rtsp_close_streams(rt);
93ced3e8
FB
1693 return 0;
1694}
1695
b250f9c6 1696#if CONFIG_SDP_DEMUXER
ff70e601 1697AVInputFormat sdp_demuxer = {
93ced3e8 1698 "sdp",
bde15e74 1699 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1700 sizeof(RTSPState),
1701 sdp_probe,
1702 sdp_read_header,
1703 sdp_read_packet,
1704 sdp_read_close,
1705};
ff70e601 1706#endif
93ced3e8 1707
b250f9c6 1708#if CONFIG_REDIR_DEMUXER
1617ad97
FB
1709/* dummy redirector format (used directly in av_open_input_file now) */
1710static int redir_probe(AVProbeData *pd)
1711{
1712 const char *p;
1713 p = pd->buf;
1714 while (redir_isspace(*p))
1715 p++;
f7d78f36
MR
1716 if (av_strstart(p, "http://", NULL) ||
1717 av_strstart(p, "rtsp://", NULL))
1617ad97
FB
1718 return AVPROBE_SCORE_MAX;
1719 return 0;
1720}
1721
e8acf0ed 1722static int redir_read_header(AVFormatContext *s, AVFormatParameters *ap)
1617ad97
FB
1723{
1724 char buf[4096], *q;
1725 int c;
1726 AVFormatContext *ic = NULL;
e8acf0ed 1727 ByteIOContext *f = s->pb;
1617ad97
FB
1728
1729 /* parse each URL and try to open it */
1730 c = url_fgetc(f);
1731 while (c != URL_EOF) {
1732 /* skip spaces */
1733 for(;;) {
1734 if (!redir_isspace(c))
1735 break;
1736 c = url_fgetc(f);
1737 }
1738 if (c == URL_EOF)
1739 break;
1740 /* record url */
1741 q = buf;
1742 for(;;) {
1743 if (c == URL_EOF || redir_isspace(c))
1744 break;
1745 if ((q - buf) < sizeof(buf) - 1)
1746 *q++ = c;
1747 c = url_fgetc(f);
1748 }
1749 *q = '\0';
1750 //printf("URL='%s'\n", buf);
1751 /* try to open the media file */
1752 if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
1753 break;
1754 }
1617ad97 1755 if (!ic)
6f3e0b21 1756 return AVERROR(EIO);
e8acf0ed
LA
1757
1758 *s = *ic;
1759 url_fclose(f);
1760
1761 return 0;
1617ad97
FB
1762}
1763
d2a067d1 1764AVInputFormat redir_demuxer = {
1617ad97 1765 "redir",
bde15e74 1766 NULL_IF_CONFIG_SMALL("Redirector format"),
1617ad97
FB
1767 0,
1768 redir_probe,
e8acf0ed 1769 redir_read_header,
1617ad97
FB
1770 NULL,
1771 NULL,
1772};
e7047005 1773#endif