Make sure buffer end remains constant within the loop
[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"
e6327fba 40#include "rtp_vorbis.h"
4934884a 41
1617ad97 42//#define DEBUG
b6892136 43//#define DEBUG_RTP_TCP
1617ad97 44
ff762d6e
FB
45static int rtsp_read_play(AVFormatContext *s);
46
c482500f 47#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 48int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 49#endif
85fb7b34 50
1617ad97
FB
51static int rtsp_probe(AVProbeData *p)
52{
f7d78f36 53 if (av_strstart(p->filename, "rtsp:", NULL))
1617ad97
FB
54 return AVPROBE_SCORE_MAX;
55 return 0;
56}
57
1ef36a70 58#define SPACE_CHARS " \t\r\n"
da1e126e
RB
59/* we use memchr() instead of strchr() here because strchr() will return
60 * the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */
61#define redir_isspace(c) memchr(SPACE_CHARS, c, 4)
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);
6a8c8b36 180 if (*p == '\0')
93ced3e8
FB
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
e6327fba
RB
200static void sdp_parse_fmtp_config(AVCodecContext * codec, void *ctx,
201 char *attr, char *value)
d1ccf0e0
RD
202{
203 switch (codec->codec_id) {
204 case CODEC_ID_MPEG4:
cbee7a69 205 case CODEC_ID_AAC:
d1ccf0e0
RD
206 if (!strcmp(attr, "config")) {
207 /* decode the hexa encoded parameter */
208 int len = hex_to_data(NULL, value);
7d09a993
RB
209 if (codec->extradata)
210 av_free(codec->extradata);
d1ccf0e0
RD
211 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
212 if (!codec->extradata)
213 return;
214 codec->extradata_size = len;
215 hex_to_data(codec->extradata, value);
216 }
217 break;
e6327fba
RB
218 case CODEC_ID_VORBIS:
219 ff_vorbis_parse_fmtp_config(codec, ctx, attr, value);
220 break;
d1ccf0e0
RD
221 default:
222 break;
223 }
224 return;
225}
226
644e7acb 227typedef struct {
7b49ce2e 228 const char *str;
d1ccf0e0
RD
229 uint16_t type;
230 uint32_t offset;
644e7acb 231} AttrNameMap;
d1ccf0e0
RD
232
233/* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
234#define ATTR_NAME_TYPE_INT 0
235#define ATTR_NAME_TYPE_STR 1
644e7acb 236static const AttrNameMap attr_names[]=
d1ccf0e0 237{
be73a544
LA
238 {"SizeLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, sizelength)},
239 {"IndexLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexlength)},
240 {"IndexDeltaLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexdeltalength)},
241 {"profile-level-id", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, profile_level_id)},
242 {"StreamType", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, streamtype)},
243 {"mode", ATTR_NAME_TYPE_STR, offsetof(RTPPayloadData, mode)},
d1ccf0e0
RD
244 {NULL, -1, -1},
245};
246
d0deedcb
RM
247/** parse the attribute line from the fmtp a line of an sdp resonse. This is broken out as a function
248* because it is used in rtp_h264.c, which is forthcoming.
249*/
250int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size)
251{
252 skip_spaces(p);
78f731de 253 if(**p) {
d0deedcb
RM
254 get_word_sep(attr, attr_size, "=", p);
255 if (**p == '=')
256 (*p)++;
257 get_word_sep(value, value_size, ";", p);
258 if (**p == ';')
259 (*p)++;
260 return 1;
261 }
262 return 0;
263}
264
d1ccf0e0
RD
265/* parse a SDP line and save stream attributes */
266static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
267{
268 char attr[256];
373afbaf
RB
269 /* Vorbis setup headers can be up to 12KB and are sent base64
270 * encoded, giving a 12KB * (4/3) = 16KB FMTP line. */
271 char value[16384];
d1ccf0e0
RD
272 int i;
273
274 RTSPStream *rtsp_st = st->priv_data;
01f4895c 275 AVCodecContext *codec = st->codec;
be73a544 276 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
277
278 /* loop on each attribute */
1ad20f96
RM
279 while(rtsp_next_attr_and_value(&p, attr, sizeof(attr), value, sizeof(value)))
280 {
bb270c08 281 /* grab the codec extra_data from the config parameter of the fmtp line */
e6327fba
RB
282 sdp_parse_fmtp_config(codec, rtsp_st->dynamic_protocol_context,
283 attr, value);
d1ccf0e0
RD
284 /* Looking for a known attribute */
285 for (i = 0; attr_names[i].str; ++i) {
286 if (!strcasecmp(attr, attr_names[i].str)) {
287 if (attr_names[i].type == ATTR_NAME_TYPE_INT)
288 *(int *)((char *)rtp_payload_data + attr_names[i].offset) = atoi(value);
289 else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
290 *(char **)((char *)rtp_payload_data + attr_names[i].offset) = av_strdup(value);
bb270c08 291 }
93ced3e8 292 }
93ced3e8
FB
293 }
294}
295
31693e00
RM
296/** Parse a string \p in the form of Range:npt=xx-xx, and determine the start
297 * and end time.
298 * Used for seeking in the rtp stream.
299 */
300static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
301{
302 char buf[256];
303
304 skip_spaces(&p);
f7d78f36 305 if (!av_stristart(p, "npt=", &p))
31693e00
RM
306 return;
307
308 *start = AV_NOPTS_VALUE;
309 *end = AV_NOPTS_VALUE;
310
311 get_word_sep(buf, sizeof(buf), "-", &p);
312 *start = parse_date(buf, 1);
313 if (*p == '-') {
314 p++;
315 get_word_sep(buf, sizeof(buf), "-", &p);
316 *end = parse_date(buf, 1);
317 }
318// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
319// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
320}
321
93ced3e8
FB
322typedef struct SDPParseState {
323 /* SDP only */
324 struct in_addr default_ip;
325 int default_ttl;
cb760a47 326 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
327} SDPParseState;
328
329static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
330 int letter, const char *buf)
331{
8b1ab7bf 332 RTSPState *rt = s->priv_data;
1617ad97
FB
333 char buf1[64], st_type[64];
334 const char *p;
fb65d2ca
DP
335 enum CodecType codec_type;
336 int payload_type, i;
1617ad97
FB
337 AVStream *st;
338 RTSPStream *rtsp_st;
93ced3e8
FB
339 struct in_addr sdp_ip;
340 int ttl;
341
67c9cd69 342 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
343
344 p = buf;
cb760a47
RB
345 if (s1->skip_media && letter != 'm')
346 return;
1617ad97 347 switch(letter) {
93ced3e8
FB
348 case 'c':
349 get_word(buf1, sizeof(buf1), &p);
350 if (strcmp(buf1, "IN") != 0)
351 return;
352 get_word(buf1, sizeof(buf1), &p);
353 if (strcmp(buf1, "IP4") != 0)
354 return;
355 get_word_sep(buf1, sizeof(buf1), "/", &p);
356 if (inet_aton(buf1, &sdp_ip) == 0)
357 return;
358 ttl = 16;
359 if (*p == '/') {
360 p++;
361 get_word_sep(buf1, sizeof(buf1), "/", &p);
362 ttl = atoi(buf1);
363 }
364 if (s->nb_streams == 0) {
365 s1->default_ip = sdp_ip;
366 s1->default_ttl = ttl;
367 } else {
368 st = s->streams[s->nb_streams - 1];
369 rtsp_st = st->priv_data;
370 rtsp_st->sdp_ip = sdp_ip;
371 rtsp_st->sdp_ttl = ttl;
372 }
373 break;
1617ad97 374 case 's':
da61e413 375 av_metadata_set(&s->metadata, "title", p);
1617ad97
FB
376 break;
377 case 'i':
378 if (s->nb_streams == 0) {
da61e413 379 av_metadata_set(&s->metadata, "comment", p);
1617ad97
FB
380 break;
381 }
382 break;
383 case 'm':
384 /* new stream */
cb760a47 385 s1->skip_media = 0;
1617ad97
FB
386 get_word(st_type, sizeof(st_type), &p);
387 if (!strcmp(st_type, "audio")) {
388 codec_type = CODEC_TYPE_AUDIO;
389 } else if (!strcmp(st_type, "video")) {
390 codec_type = CODEC_TYPE_VIDEO;
090438cc
RB
391 } else if (!strcmp(st_type, "application")) {
392 codec_type = CODEC_TYPE_DATA;
1617ad97 393 } else {
cb760a47 394 s1->skip_media = 1;
1617ad97
FB
395 return;
396 }
1617ad97
FB
397 rtsp_st = av_mallocz(sizeof(RTSPStream));
398 if (!rtsp_st)
399 return;
8b1ab7bf
FB
400 rtsp_st->stream_index = -1;
401 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
402
403 rtsp_st->sdp_ip = s1->default_ip;
404 rtsp_st->sdp_ttl = s1->default_ttl;
405
93ced3e8
FB
406 get_word(buf1, sizeof(buf1), &p); /* port */
407 rtsp_st->sdp_port = atoi(buf1);
408
409 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 410
93ced3e8
FB
411 /* XXX: handle list of formats */
412 get_word(buf1, sizeof(buf1), &p); /* format list */
413 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 414
7ed19d7f 415 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
416 /* no corresponding stream */
417 } else {
418 st = av_new_stream(s, 0);
419 if (!st)
420 return;
421 st->priv_data = rtsp_st;
422 rtsp_st->stream_index = st->index;
01f4895c 423 st->codec->codec_type = codec_type;
d1ccf0e0 424 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 425 /* if standard payload type, we can find the codec right now */
bf6d9818 426 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
427 }
428 }
1617ad97 429 /* put a default control url */
75e61b0e 430 av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url));
1617ad97
FB
431 break;
432 case 'a':
f7d78f36 433 if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
1617ad97
FB
434 char proto[32];
435 /* get the control url */
436 st = s->streams[s->nb_streams - 1];
437 rtsp_st = st->priv_data;
115329f1 438
1617ad97 439 /* XXX: may need to add full url resolution */
6ba5cbc6 440 url_split(proto, sizeof(proto), NULL, 0, NULL, 0, NULL, NULL, 0, p);
1617ad97
FB
441 if (proto[0] == '\0') {
442 /* relative control URL */
75e61b0e
MR
443 av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url));
444 av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 445 } else {
75e61b0e 446 av_strlcpy(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 447 }
83d14c85 448 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 449 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 450 get_word(buf1, sizeof(buf1), &p);
93ced3e8 451 payload_type = atoi(buf1);
83d14c85 452 st = s->streams[s->nb_streams - 1];
ff16f551
RB
453 rtsp_st = st->priv_data;
454 sdp_parse_rtpmap(st->codec, rtsp_st, payload_type, p);
f7d78f36 455 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 456 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 457 get_word(buf1, sizeof(buf1), &p);
93ced3e8
FB
458 payload_type = atoi(buf1);
459 for(i = 0; i < s->nb_streams;i++) {
460 st = s->streams[i];
461 rtsp_st = st->priv_data;
462 if (rtsp_st->sdp_payload_type == payload_type) {
4934884a 463 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 464 if(!rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf)) {
4934884a
RM
465 sdp_parse_fmtp(st, p);
466 }
467 } else {
ed787542 468 sdp_parse_fmtp(st, p);
4934884a 469 }
93ced3e8
FB
470 }
471 }
f7d78f36 472 } else if(av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
473 // let dynamic protocol handlers have a stab at the line.
474 get_word(buf1, sizeof(buf1), &p);
475 payload_type = atoi(buf1);
476 for(i = 0; i < s->nb_streams;i++) {
477 st = s->streams[i];
478 rtsp_st = st->priv_data;
479 if (rtsp_st->sdp_payload_type == payload_type) {
480 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 481 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf);
d0deedcb
RM
482 }
483 }
484 }
f7d78f36 485 } else if(av_strstart(p, "range:", &p)) {
31693e00
RM
486 int64_t start, end;
487
488 // this is so that seeking on a streamed file can work.
489 rtsp_parse_range_npt(p, &start, &end);
490 s->start_time= start;
491 s->duration= (end==AV_NOPTS_VALUE)?AV_NOPTS_VALUE:end-start; // AV_NOPTS_VALUE means live broadcast (and can't seek)
119b4668
RB
492 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
493 if (atoi(p) == 1)
494 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
495 } else {
496 if (rt->server_type == RTSP_SERVER_WMS)
497 ff_wms_parse_sdp_a_line(s, p);
498 if (s->nb_streams > 0) {
c4a3d032
RB
499 if (rt->server_type == RTSP_SERVER_REAL)
500 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
501
502 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
503 if (rtsp_st->dynamic_handler &&
504 rtsp_st->dynamic_handler->parse_sdp_a_line)
505 rtsp_st->dynamic_handler->parse_sdp_a_line(s, s->nb_streams - 1,
506 rtsp_st->dynamic_protocol_context, buf);
1a30d541 507 }
1617ad97
FB
508 }
509 break;
510 }
511}
512
5c91a675 513static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
514{
515 const char *p;
516 int letter;
9211bcdd
RB
517 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
518 * contain long SDP lines containing complete ASF Headers (several
519 * kB) or arrays of MDPR (RM stream descriptor) headers plus
520 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
521 * buffer is large.
522 *
523 * The Vorbis FMTP line can be up to 16KB - see sdp_parse_fmtp. */
524 char buf[16384], *q;
93ced3e8 525 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 526
93ced3e8 527 memset(s1, 0, sizeof(SDPParseState));
1617ad97
FB
528 p = content;
529 for(;;) {
530 skip_spaces(&p);
531 letter = *p;
532 if (letter == '\0')
533 break;
534 p++;
535 if (*p != '=')
536 goto next_line;
537 p++;
538 /* get the content */
539 q = buf;
b6892136 540 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
541 if ((q - buf) < sizeof(buf) - 1)
542 *q++ = *p;
543 p++;
544 }
545 *q = '\0';
93ced3e8 546 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
547 next_line:
548 while (*p != '\n' && *p != '\0')
549 p++;
550 if (*p == '\n')
551 p++;
552 }
553 return 0;
554}
555
556static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
557{
558 const char *p;
559 int v;
560
561 p = *pp;
562 skip_spaces(&p);
563 v = strtol(p, (char **)&p, 10);
564 if (*p == '-') {
565 p++;
566 *min_ptr = v;
567 v = strtol(p, (char **)&p, 10);
568 *max_ptr = v;
569 } else {
570 *min_ptr = v;
571 *max_ptr = v;
572 }
573 *pp = p;
574}
575
576/* XXX: only one transport specification is parsed */
a9e534d5 577static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
578{
579 char transport_protocol[16];
580 char profile[16];
581 char lower_transport[16];
582 char parameter[16];
583 RTSPTransportField *th;
584 char buf[256];
115329f1 585
1617ad97 586 reply->nb_transports = 0;
115329f1 587
1617ad97
FB
588 for(;;) {
589 skip_spaces(&p);
590 if (*p == '\0')
591 break;
592
593 th = &reply->transports[reply->nb_transports];
594
115329f1 595 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 596 "/", &p);
e1502118 597 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
598 get_word_sep(profile, sizeof(profile), "/;,", &p);
599 lower_transport[0] = '\0';
600 /* rtp/avp/<protocol> */
601 if (*p == '/') {
7ecc634e
LB
602 get_word_sep(lower_transport, sizeof(lower_transport),
603 ";,", &p);
119b4668
RB
604 }
605 th->transport = RTSP_TRANSPORT_RTP;
606 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
607 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 608 /* x-pn-tng/<protocol> */
e1502118
LB
609 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
610 profile[0] = '\0';
119b4668 611 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 612 }
b6892136 613 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 614 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 615 else
90abbdba 616 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 617
1617ad97
FB
618 if (*p == ';')
619 p++;
620 /* get each parameter */
621 while (*p != '\0' && *p != ',') {
622 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
623 if (!strcmp(parameter, "port")) {
624 if (*p == '=') {
625 p++;
626 rtsp_parse_range(&th->port_min, &th->port_max, &p);
627 }
628 } else if (!strcmp(parameter, "client_port")) {
629 if (*p == '=') {
630 p++;
115329f1 631 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
632 &th->client_port_max, &p);
633 }
634 } else if (!strcmp(parameter, "server_port")) {
635 if (*p == '=') {
636 p++;
115329f1 637 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
638 &th->server_port_max, &p);
639 }
640 } else if (!strcmp(parameter, "interleaved")) {
641 if (*p == '=') {
642 p++;
115329f1 643 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
644 &th->interleaved_max, &p);
645 }
646 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
647 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
648 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
649 } else if (!strcmp(parameter, "ttl")) {
650 if (*p == '=') {
651 p++;
652 th->ttl = strtol(p, (char **)&p, 10);
653 }
654 } else if (!strcmp(parameter, "destination")) {
655 struct in_addr ipaddr;
656
657 if (*p == '=') {
658 p++;
659 get_word_sep(buf, sizeof(buf), ";,", &p);
115329f1 660 if (inet_aton(buf, &ipaddr))
1617ad97
FB
661 th->destination = ntohl(ipaddr.s_addr);
662 }
663 }
664 while (*p != ';' && *p != '\0' && *p != ',')
665 p++;
666 if (*p == ';')
667 p++;
668 }
669 if (*p == ',')
670 p++;
671
672 reply->nb_transports++;
673 }
674}
675
a9e534d5 676void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
677{
678 const char *p;
679
680 /* NOTE: we do case independent match for broken servers */
681 p = buf;
f7d78f36 682 if (av_stristart(p, "Session:", &p)) {
30e79845 683 int t;
1617ad97 684 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
685 if (av_stristart(p, ";timeout=", &p) &&
686 (t = strtol(p, NULL, 10)) > 0) {
687 reply->timeout = t;
688 }
f7d78f36 689 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 690 reply->content_length = strtol(p, NULL, 10);
f7d78f36 691 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 692 rtsp_parse_transport(reply, p);
f7d78f36 693 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 694 reply->seq = strtol(p, NULL, 10);
f7d78f36 695 } else if (av_stristart(p, "Range:", &p)) {
31693e00 696 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
697 } else if (av_stristart(p, "RealChallenge1:", &p)) {
698 skip_spaces(&p);
699 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
700 } else if (av_stristart(p, "Server:", &p)) {
701 skip_spaces(&p);
702 av_strlcpy(reply->server, p, sizeof(reply->server));
1617ad97
FB
703 }
704}
705
b7b8fc34
FB
706/* skip a RTP/TCP interleaved packet */
707static void rtsp_skip_packet(AVFormatContext *s)
708{
709 RTSPState *rt = s->priv_data;
710 int ret, len, len1;
711 uint8_t buf[1024];
712
0e848977 713 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
714 if (ret != 3)
715 return;
80fb8234 716 len = AV_RB16(buf + 1);
67c9cd69
BC
717
718 dprintf(s, "skipping RTP packet len=%d\n", len);
719
b7b8fc34
FB
720 /* skip payload */
721 while (len > 0) {
722 len1 = len;
723 if (len1 > sizeof(buf))
724 len1 = sizeof(buf);
0e848977 725 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
726 if (ret != len1)
727 return;
728 len -= len1;
729 }
730}
1617ad97 731
7e726132
RB
732/**
733 * Read a RTSP message from the server, or prepare to read data
734 * packets if we're reading data interleaved over the TCP/RTSP
735 * connection as well.
736 *
737 * @param s RTSP demuxer context
738 * @param reply pointer where the RTSP message header will be stored
739 * @param content_ptr pointer where the RTSP message body, if any, will
740 * be stored (length is in \p reply)
741 * @param return_on_interleaved_data whether the function may return if we
742 * encounter a data marker ('$'), which precedes data
743 * packets over interleaved TCP/RTSP connections. If this
744 * is set, this function will return 1 after encountering
745 * a '$'. If it is not set, the function will skip any
746 * data packets (if they are encountered), until a reply
747 * has been fully parsed. If no more data is available
748 * without parsing a reply, it will return an error.
749 *
750 * @returns 1 if a data packets is ready to be received, -1 on error,
751 * and 0 on success.
752 */
753static int
29b9f58b 754rtsp_read_reply (AVFormatContext *s, RTSPMessageHeader *reply,
7e726132 755 unsigned char **content_ptr, int return_on_interleaved_data)
1617ad97
FB
756{
757 RTSPState *rt = s->priv_data;
758 char buf[4096], buf1[1024], *q;
759 unsigned char ch;
760 const char *p;
7e726132 761 int ret, content_length, line_count = 0;
1617ad97
FB
762 unsigned char *content = NULL;
763
d541a7d2 764 memset(reply, 0, sizeof(*reply));
1617ad97 765
1617ad97 766 /* parse reply (XXX: use buffers) */
1617ad97
FB
767 rt->last_reply[0] = '\0';
768 for(;;) {
769 q = buf;
770 for(;;) {
0e848977 771 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 772#ifdef DEBUG_RTP_TCP
67c9cd69 773 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
774#endif
775 if (ret != 1)
776 return -1;
1617ad97
FB
777 if (ch == '\n')
778 break;
b7b8fc34
FB
779 if (ch == '$') {
780 /* XXX: only parse it if first char on line ? */
7e726132
RB
781 if (return_on_interleaved_data) {
782 return 1;
783 } else
b7b8fc34
FB
784 rtsp_skip_packet(s);
785 } else if (ch != '\r') {
1617ad97
FB
786 if ((q - buf) < sizeof(buf) - 1)
787 *q++ = ch;
788 }
789 }
790 *q = '\0';
67c9cd69
BC
791
792 dprintf(s, "line='%s'\n", buf);
793
1617ad97
FB
794 /* test if last line */
795 if (buf[0] == '\0')
796 break;
797 p = buf;
798 if (line_count == 0) {
799 /* get reply code */
800 get_word(buf1, sizeof(buf1), &p);
801 get_word(buf1, sizeof(buf1), &p);
802 reply->status_code = atoi(buf1);
803 } else {
804 rtsp_parse_line(reply, p);
75e61b0e
MR
805 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
806 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
807 }
808 line_count++;
809 }
115329f1 810
1617ad97 811 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 812 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 813
1617ad97
FB
814 content_length = reply->content_length;
815 if (content_length > 0) {
816 /* leave some room for a trailing '\0' (useful for simple parsing) */
817 content = av_malloc(content_length + 1);
0e848977 818 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
819 content[content_length] = '\0';
820 }
821 if (content_ptr)
822 *content_ptr = content;
e2e2e7dd
AB
823 else
824 av_free(content);
7e726132
RB
825
826 return 0;
1617ad97
FB
827}
828
30e79845 829static void rtsp_send_cmd_async (AVFormatContext *s,
29b9f58b
RB
830 const char *cmd, RTSPMessageHeader *reply,
831 unsigned char **content_ptr)
832{
833 RTSPState *rt = s->priv_data;
834 char buf[4096], buf1[1024];
835
836 rt->seq++;
837 av_strlcpy(buf, cmd, sizeof(buf));
838 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
839 av_strlcat(buf, buf1, sizeof(buf));
840 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
841 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
842 av_strlcat(buf, buf1, sizeof(buf));
843 }
844 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69
BC
845
846 dprintf(s, "Sending:\n%s--\n", buf);
847
29b9f58b 848 url_write(rt->rtsp_hd, buf, strlen(buf));
30e79845
RB
849 rt->last_cmd_time = av_gettime();
850}
851
852static void rtsp_send_cmd (AVFormatContext *s,
853 const char *cmd, RTSPMessageHeader *reply,
854 unsigned char **content_ptr)
855{
856 rtsp_send_cmd_async(s, cmd, reply, content_ptr);
29b9f58b 857
7e726132 858 rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
859}
860
1617ad97 861
8b1ab7bf
FB
862/* close and free RTSP streams */
863static void rtsp_close_streams(RTSPState *rt)
864{
865 int i;
866 RTSPStream *rtsp_st;
867
868 for(i=0;i<rt->nb_rtsp_streams;i++) {
869 rtsp_st = rt->rtsp_streams[i];
870 if (rtsp_st) {
0a861b6f 871 if (rtsp_st->transport_priv) {
accc248f 872 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 873 ff_rdt_parse_close(rtsp_st->transport_priv);
accc248f 874 else
0a861b6f 875 rtp_parse_close(rtsp_st->transport_priv);
accc248f 876 }
8b1ab7bf
FB
877 if (rtsp_st->rtp_handle)
878 url_close(rtsp_st->rtp_handle);
4934884a
RM
879 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
880 rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
8b1ab7bf 881 }
8b1ab7bf
FB
882 }
883 av_free(rt->rtsp_streams);
1a30d541
RB
884 if (rt->asf_ctx) {
885 av_close_input_stream (rt->asf_ctx);
886 rt->asf_ctx = NULL;
887 }
8b1ab7bf
FB
888}
889
ee0cb67f
RB
890static int
891rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
892{
accc248f 893 RTSPState *rt = s->priv_data;
ee0cb67f
RB
894 AVStream *st = NULL;
895
a6789dca
RB
896 /* open the RTP context */
897 if (rtsp_st->stream_index >= 0)
898 st = s->streams[rtsp_st->stream_index];
899 if (!st)
900 s->ctx_flags |= AVFMTCTX_NOHEADER;
accc248f
RB
901
902 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 903 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
accc248f
RB
904 rtsp_st->dynamic_protocol_context,
905 rtsp_st->dynamic_handler);
906 else
0a861b6f 907 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
5c918b27
RB
908 rtsp_st->sdp_payload_type,
909 &rtsp_st->rtp_payload_data);
a6789dca 910
0a861b6f 911 if (!rtsp_st->transport_priv) {
a6789dca 912 return AVERROR(ENOMEM);
accc248f 913 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
a6789dca 914 if(rtsp_st->dynamic_handler) {
0a861b6f 915 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
99a1d191
RB
916 rtsp_st->dynamic_protocol_context,
917 rtsp_st->dynamic_handler);
ee0cb67f 918 }
a6789dca 919 }
ee0cb67f
RB
920
921 return 0;
922}
923
53620bba
RB
924/**
925 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
926 */
927static int
e9dea59f 928make_setup_request (AVFormatContext *s, const char *host, int port,
90abbdba 929 int lower_transport, const char *real_challenge)
1617ad97
FB
930{
931 RTSPState *rt = s->priv_data;
f830c9a4 932 int rtx, j, i, err, interleave = 0;
1617ad97 933 RTSPStream *rtsp_st;
a9e534d5 934 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 935 char cmd[2048];
e9dea59f
RB
936 const char *trans_pref;
937
119b4668 938 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
939 trans_pref = "x-pn-tng";
940 else
941 trans_pref = "RTP/AVP";
115329f1 942
30e79845
RB
943 /* default timeout: 1 minute */
944 rt->timeout = 60;
945
1617ad97
FB
946 /* for each stream, make the setup request */
947 /* XXX: we assume the same server is used for the control of each
948 RTSP stream */
d1ccf0e0
RD
949
950 for(j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
951 char transport[2048];
952
f830c9a4
RB
953 /**
954 * WMS serves all UDP data over a single connection, the RTX, which
955 * isn't necessarily the first in the SDP but has to be the first
956 * to be set up, else the second/third SETUP will fail with a 461.
957 */
958 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
959 rt->server_type == RTSP_SERVER_WMS) {
960 if (i == 0) {
961 /* rtx first */
962 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
963 int len = strlen(rt->rtsp_streams[rtx]->control_url);
964 if (len >= 4 &&
965 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, "/rtx"))
966 break;
967 }
968 if (rtx == rt->nb_rtsp_streams)
969 return -1; /* no RTX found */
970 rtsp_st = rt->rtsp_streams[rtx];
971 } else
972 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
973 } else
2fea9650 974 rtsp_st = rt->rtsp_streams[i];
1617ad97 975
1617ad97 976 /* RTP/UDP */
90abbdba 977 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 978 char buf[256];
85fb7b34 979
f830c9a4
RB
980 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
981 port = reply->transports[0].client_port_min;
982 goto have_port;
983 }
984
85fb7b34 985 /* first try in specified port range */
d1ccf0e0
RD
986 if (RTSP_RTP_PORT_MIN != 0) {
987 while(j <= RTSP_RTP_PORT_MAX) {
b316aa1a 988 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d", host, j);
ecdcbbf6 989 j += 2; /* we will use two port by rtp stream (rtp and rtcp) */
dbf30963 990 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) {
85fb7b34 991 goto rtp_opened;
d1ccf0e0 992 }
85fb7b34 993 }
1617ad97 994 }
85fb7b34 995
d1ccf0e0
RD
996/* then try on any port
997** if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
998** err = AVERROR_INVALIDDATA;
999** goto fail;
1000** }
1001*/
85fb7b34
FB
1002
1003 rtp_opened:
8b1ab7bf 1004 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1005 have_port:
0ad306bc 1006 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1007 "%s/UDP;", trans_pref);
1008 if (rt->server_type != RTSP_SERVER_REAL)
1009 av_strlcat(transport, "unicast;", sizeof(transport));
1010 av_strlcatf(transport, sizeof(transport),
1011 "client_port=%d", port);
f830c9a4
RB
1012 if (rt->transport == RTSP_TRANSPORT_RTP &&
1013 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1014 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1015 }
1016
1017 /* RTP/TCP */
90abbdba 1018 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1019 /** For WMS streams, the application streams are only used for
1020 * UDP. When trying to set it up for TCP streams, the server
1021 * will return an error. Therefore, we skip those streams. */
1022 if (rt->server_type == RTSP_SERVER_WMS &&
1023 s->streams[rtsp_st->stream_index]->codec->codec_type == CODEC_TYPE_DATA)
1024 continue;
0ad306bc 1025 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1026 "%s/TCP;", trans_pref);
1027 if (rt->server_type == RTSP_SERVER_WMS)
1028 av_strlcat(transport, "unicast;", sizeof(transport));
1029 av_strlcatf(transport, sizeof(transport),
1030 "interleaved=%d-%d",
1031 interleave, interleave + 1);
1032 interleave += 2;
1617ad97
FB
1033 }
1034
90abbdba 1035 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1036 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1037 "%s/UDP;multicast", trans_pref);
1617ad97 1038 }
d1c6e47c
RB
1039 if (rt->server_type == RTSP_SERVER_REAL ||
1040 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1041 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1042 snprintf(cmd, sizeof(cmd),
b6892136
FB
1043 "SETUP %s RTSP/1.0\r\n"
1044 "Transport: %s\r\n",
1617ad97 1045 rtsp_st->control_url, transport);
2e889ae4 1046 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1047 char real_res[41], real_csum[9];
1048 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1049 real_challenge);
1050 av_strlcatf(cmd, sizeof(cmd),
1051 "If-Match: %s\r\n"
1052 "RealChallenge2: %s, sd=%s\r\n",
1053 rt->session_id, real_res, real_csum);
1054 }
1617ad97 1055 rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1056 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1057 err = 1;
1058 goto fail;
7e6ca34f
RB
1059 } else if (reply->status_code != RTSP_STATUS_OK ||
1060 reply->nb_transports != 1) {
1617ad97
FB
1061 err = AVERROR_INVALIDDATA;
1062 goto fail;
1063 }
1064
1065 /* XXX: same protocol for all streams is required */
1066 if (i > 0) {
119b4668
RB
1067 if (reply->transports[0].lower_transport != rt->lower_transport ||
1068 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1069 err = AVERROR_INVALIDDATA;
1070 goto fail;
1071 }
1072 } else {
90abbdba 1073 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1074 rt->transport = reply->transports[0].transport;
1617ad97
FB
1075 }
1076
1077 /* close RTP connection if not choosen */
90abbdba
RB
1078 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1079 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1080 url_close(rtsp_st->rtp_handle);
1081 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1082 }
1083
90abbdba
RB
1084 switch(reply->transports[0].lower_transport) {
1085 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1086 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1087 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1088 break;
115329f1 1089
90abbdba 1090 case RTSP_LOWER_TRANSPORT_UDP:
1617ad97
FB
1091 {
1092 char url[1024];
115329f1 1093
1617ad97 1094 /* XXX: also use address if specified */
115329f1 1095 snprintf(url, sizeof(url), "rtp://%s:%d",
1617ad97 1096 host, reply->transports[0].server_port_min);
f830c9a4
RB
1097 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1098 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1617ad97
FB
1099 err = AVERROR_INVALIDDATA;
1100 goto fail;
1101 }
1102 }
1103 break;
90abbdba 1104 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1617ad97
FB
1105 {
1106 char url[1024];
d02678ec 1107 struct in_addr in;
1617ad97 1108
d02678ec 1109 in.s_addr = htonl(reply->transports[0].destination);
35b74c3d 1110 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
d02678ec
LB
1111 inet_ntoa(in),
1112 reply->transports[0].port_min,
1113 reply->transports[0].ttl);
dbf30963 1114 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1617ad97
FB
1115 err = AVERROR_INVALIDDATA;
1116 goto fail;
1117 }
1118 }
1119 break;
1120 }
d1ccf0e0 1121
ee0cb67f 1122 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1123 goto fail;
1617ad97
FB
1124 }
1125
30e79845
RB
1126 if (reply->timeout > 0)
1127 rt->timeout = reply->timeout;
1128
2e889ae4 1129 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1130 rt->need_subscription = 1;
1131
53620bba
RB
1132 return 0;
1133
1134fail:
8a8754d8
RB
1135 for (i=0; i<rt->nb_rtsp_streams; i++) {
1136 if (rt->rtsp_streams[i]->rtp_handle) {
1137 url_close(rt->rtsp_streams[i]->rtp_handle);
1138 rt->rtsp_streams[i]->rtp_handle = NULL;
1139 }
1140 }
53620bba
RB
1141 return err;
1142}
1143
1144static int rtsp_read_header(AVFormatContext *s,
1145 AVFormatParameters *ap)
1146{
1147 RTSPState *rt = s->priv_data;
1148 char host[1024], path[1024], tcpname[1024], cmd[2048], *option_list, *option;
1149 URLContext *rtsp_hd;
1150 int port, ret, err;
a9e534d5 1151 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1152 unsigned char *content = NULL;
90abbdba 1153 int lower_transport_mask = 0;
1cf151e9 1154 char real_challenge[64];
53620bba
RB
1155
1156 /* extract hostname and port */
1157 url_split(NULL, 0, NULL, 0,
1158 host, sizeof(host), &port, path, sizeof(path), s->filename);
1159 if (port < 0)
1160 port = RTSP_DEFAULT_PORT;
1161
1162 /* search for options */
1163 option_list = strchr(path, '?');
1164 if (option_list) {
1165 /* remove the options from the path */
1166 *option_list++ = 0;
1167 while(option_list) {
1168 /* move the option pointer */
1169 option = option_list;
1170 option_list = strchr(option_list, '&');
1171 if (option_list)
1172 *(option_list++) = 0;
1173 /* handle the options */
1174 if (strcmp(option, "udp") == 0)
90abbdba 1175 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
53620bba 1176 else if (strcmp(option, "multicast") == 0)
90abbdba 1177 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
53620bba 1178 else if (strcmp(option, "tcp") == 0)
90abbdba 1179 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
53620bba
RB
1180 }
1181 }
1182
90abbdba 1183 if (!lower_transport_mask)
2a1d51c5 1184 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba
RB
1185
1186 /* open the tcp connexion */
1187 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
1188 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0)
1189 return AVERROR(EIO);
1190 rt->rtsp_hd = rtsp_hd;
1191 rt->seq = 0;
1192
1cf151e9
RB
1193 /* request options supported by the server; this also detects server type */
1194 for (rt->server_type = RTSP_SERVER_RTP;;) {
1195 snprintf(cmd, sizeof(cmd),
1196 "OPTIONS %s RTSP/1.0\r\n", s->filename);
2e889ae4 1197 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1198 av_strlcat(cmd,
1199 /**
1200 * The following entries are required for proper
1201 * streaming from a Realmedia server. They are
1202 * interdependent in some way although we currently
1203 * don't quite understand how. Values were copied
1204 * from mplayer SVN r23589.
1205 * @param CompanyID is a 16-byte ID in base64
1206 * @param ClientChallenge is a 16-byte ID in hex
1207 */
1208 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1209 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1210 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1211 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1212 sizeof(cmd));
1213 rtsp_send_cmd(s, cmd, reply, NULL);
1214 if (reply->status_code != RTSP_STATUS_OK) {
1215 err = AVERROR_INVALIDDATA;
1216 goto fail;
1217 }
1218
1219 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1220 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1221 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1222 continue;
7a86bafa
RB
1223 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1224 rt->server_type = RTSP_SERVER_WMS;
2e889ae4 1225 } else if (rt->server_type == RTSP_SERVER_REAL) {
1cf151e9
RB
1226 strcpy(real_challenge, reply->real_challenge);
1227 }
1228 break;
1229 }
1230
53620bba
RB
1231 /* describe the stream */
1232 snprintf(cmd, sizeof(cmd),
1233 "DESCRIBE %s RTSP/1.0\r\n"
1234 "Accept: application/sdp\r\n",
1235 s->filename);
2e889ae4 1236 if (rt->server_type == RTSP_SERVER_REAL) {
897ade1b
RB
1237 /**
1238 * The Require: attribute is needed for proper streaming from
1239 * Realmedia servers.
1240 */
1241 av_strlcat(cmd,
1242 "Require: com.real.retain-entity-for-setup\r\n",
1243 sizeof(cmd));
1244 }
53620bba
RB
1245 rtsp_send_cmd(s, cmd, reply, &content);
1246 if (!content) {
1247 err = AVERROR_INVALIDDATA;
1248 goto fail;
1249 }
1250 if (reply->status_code != RTSP_STATUS_OK) {
1251 err = AVERROR_INVALIDDATA;
1252 goto fail;
1253 }
1254
1255 /* now we got the SDP description, we parse it */
1256 ret = sdp_parse(s, (const char *)content);
1257 av_freep(&content);
1258 if (ret < 0) {
1259 err = AVERROR_INVALIDDATA;
1260 goto fail;
1261 }
1262
8a8754d8 1263 do {
90abbdba 1264 int lower_transport = ff_log2_tab[lower_transport_mask & ~(lower_transport_mask - 1)];
8a8754d8 1265
90abbdba 1266 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1267 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1268 real_challenge : NULL);
8a8754d8 1269 if (err < 0)
7e6ca34f 1270 goto fail;
90abbdba
RB
1271 lower_transport_mask &= ~(1 << lower_transport);
1272 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1273 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1274 goto fail;
1275 }
1276 } while (err);
53620bba 1277
ff762d6e
FB
1278 rt->state = RTSP_STATE_IDLE;
1279 rt->seek_timestamp = 0; /* default is to start stream at position
1280 zero */
c04c3282 1281 if (ap->initial_pause) {
ff762d6e
FB
1282 /* do not start immediately */
1283 } else {
1284 if (rtsp_read_play(s) < 0) {
1285 err = AVERROR_INVALIDDATA;
1617ad97
FB
1286 goto fail;
1287 }
1288 }
1617ad97
FB
1289 return 0;
1290 fail:
8b1ab7bf 1291 rtsp_close_streams(rt);
1617ad97
FB
1292 av_freep(&content);
1293 url_close(rt->rtsp_hd);
1294 return err;
1295}
1296
8b1ab7bf
FB
1297static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1298 uint8_t *buf, int buf_size)
1617ad97
FB
1299{
1300 RTSPState *rt = s->priv_data;
b6892136 1301 int id, len, i, ret;
1617ad97 1302 RTSPStream *rtsp_st;
1617ad97 1303
b6892136 1304#ifdef DEBUG_RTP_TCP
67c9cd69 1305 dprintf(s, "tcp_read_packet:\n");
b6892136 1306#endif
1617ad97
FB
1307 redo:
1308 for(;;) {
7e726132
RB
1309 RTSPMessageHeader reply;
1310
1311 ret = rtsp_read_reply(s, &reply, NULL, 1);
1312 if (ret == -1)
8b1ab7bf 1313 return -1;
7e726132 1314 if (ret == 1) /* received '$' */
1617ad97 1315 break;
7e726132 1316 /* XXX: parse message */
1617ad97 1317 }
0e848977 1318 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1319 if (ret != 3)
8b1ab7bf 1320 return -1;
b6892136 1321 id = buf[0];
80fb8234 1322 len = AV_RB16(buf + 1);
b6892136 1323#ifdef DEBUG_RTP_TCP
67c9cd69 1324 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1325#endif
8b1ab7bf 1326 if (len > buf_size || len < 12)
1617ad97
FB
1327 goto redo;
1328 /* get the data */
0e848977 1329 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1330 if (ret != len)
8b1ab7bf 1331 return -1;
985b05d3 1332 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1333 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1334 return -1;
115329f1 1335
1617ad97 1336 /* find the matching stream */
8b1ab7bf
FB
1337 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1338 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1339 if (id >= rtsp_st->interleaved_min &&
1340 id <= rtsp_st->interleaved_max)
1617ad97
FB
1341 goto found;
1342 }
1343 goto redo;
1344 found:
8b1ab7bf
FB
1345 *prtsp_st = rtsp_st;
1346 return len;
1617ad97
FB
1347}
1348
115329f1 1349static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
8b1ab7bf 1350 uint8_t *buf, int buf_size)
1617ad97 1351{
8b1ab7bf 1352 RTSPState *rt = s->priv_data;
1617ad97
FB
1353 RTSPStream *rtsp_st;
1354 fd_set rfds;
7e726132 1355 int fd, fd_max, n, i, ret, tcp_fd;
1617ad97
FB
1356 struct timeval tv;
1357
1358 for(;;) {
b7b8fc34 1359 if (url_interrupt_cb())
a960a1e0 1360 return AVERROR(EINTR);
1617ad97 1361 FD_ZERO(&rfds);
46ff7a5f
LA
1362 if (rt->rtsp_hd) {
1363 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1364 FD_SET(tcp_fd, &rfds);
1365 } else {
1366 fd_max = 0;
1367 tcp_fd = -1;
1368 }
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) {
2fea9650
RB
1372 /* currently, we cannot probe RTCP handle because of
1373 * blocking restrictions */
bc8763cd
RB
1374 fd = url_get_file_handle(rtsp_st->rtp_handle);
1375 if (fd > fd_max)
1376 fd_max = fd;
1377 FD_SET(fd, &rfds);
f830c9a4 1378 }
1617ad97 1379 }
1617ad97 1380 tv.tv_sec = 0;
b7b8fc34 1381 tv.tv_usec = 100 * 1000;
1617ad97
FB
1382 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1383 if (n > 0) {
8b1ab7bf
FB
1384 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1385 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1386 if (rtsp_st->rtp_handle) {
bc8763cd
RB
1387 fd = url_get_file_handle(rtsp_st->rtp_handle);
1388 if (FD_ISSET(fd, &rfds)) {
2fea9650
RB
1389 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1390 if (ret > 0) {
1391 *prtsp_st = rtsp_st;
1392 return ret;
1393 }
1617ad97
FB
1394 }
1395 }
1396 }
7e726132
RB
1397 if (FD_ISSET(tcp_fd, &rfds)) {
1398 RTSPMessageHeader reply;
1399
1400 rtsp_read_reply(s, &reply, NULL, 0);
1401 /* XXX: parse message */
1402 }
1617ad97
FB
1403 }
1404 }
1405}
1406
1407static int rtsp_read_packet(AVFormatContext *s,
1408 AVPacket *pkt)
1409{
1410 RTSPState *rt = s->priv_data;
8b1ab7bf
FB
1411 RTSPStream *rtsp_st;
1412 int ret, len;
e49906c3 1413 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
30e79845
RB
1414 RTSPMessageHeader reply1, *reply = &reply1;
1415 char cmd[1024];
8b1ab7bf 1416
572c6a38 1417 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1418 int i;
572c6a38 1419 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1420
572c6a38
RB
1421 for (i = 0; i < s->nb_streams; i++)
1422 cache[i] = s->streams[i]->discard;
1423
1424 if (!rt->need_subscription) {
1425 if (memcmp (cache, rt->real_setup_cache,
1426 sizeof(enum AVDiscard) * s->nb_streams)) {
1427 av_strlcatf(cmd, sizeof(cmd),
1428 "SET_PARAMETER %s RTSP/1.0\r\n"
1429 "Unsubscribe: %s\r\n",
1430 s->filename, rt->last_subscription);
1431 rtsp_send_cmd(s, cmd, reply, NULL);
1432 if (reply->status_code != RTSP_STATUS_OK)
1433 return AVERROR_INVALIDDATA;
1434 rt->need_subscription = 1;
1435 }
1256d16b 1436 }
1256d16b 1437
572c6a38
RB
1438 if (rt->need_subscription) {
1439 int r, rule_nr, first = 1;
1440
1441 memcpy(rt->real_setup_cache, cache,
1442 sizeof(enum AVDiscard) * s->nb_streams);
1443 rt->last_subscription[0] = 0;
1444
1445 snprintf(cmd, sizeof(cmd),
1446 "SET_PARAMETER %s RTSP/1.0\r\n"
1447 "Subscribe: ",
1448 s->filename);
1449 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1450 rule_nr = 0;
1451 for (r = 0; r < s->nb_streams; r++) {
1452 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1453 if (s->streams[r]->discard != AVDISCARD_ALL) {
1454 if (!first)
1455 av_strlcat(rt->last_subscription, ",",
1456 sizeof(rt->last_subscription));
1457 ff_rdt_subscribe_rule(
1458 rt->last_subscription,
1459 sizeof(rt->last_subscription), i, rule_nr);
1460 first = 0;
1461 }
1462 rule_nr++;
1463 }
1464 }
1465 }
1466 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1467 rtsp_send_cmd(s, cmd, reply, NULL);
1468 if (reply->status_code != RTSP_STATUS_OK)
1469 return AVERROR_INVALIDDATA;
1470 rt->need_subscription = 0;
1471
1472 if (rt->state == RTSP_STATE_PLAYING)
1473 rtsp_read_play (s);
1474 }
1256d16b
RB
1475 }
1476
8b1ab7bf 1477 /* get next frames from the same RTP packet */
0a861b6f 1478 if (rt->cur_transport_priv) {
119b4668 1479 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1480 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
4fce284c 1481 else
0a861b6f 1482 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
8b1ab7bf 1483 if (ret == 0) {
0a861b6f 1484 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1485 return 0;
1486 } else if (ret == 1) {
1487 return 0;
1488 } else {
0a861b6f 1489 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1490 }
1491 }
1617ad97 1492
8b1ab7bf
FB
1493 /* read next RTP packet */
1494 redo:
90abbdba 1495 switch(rt->lower_transport) {
1617ad97 1496 default:
90abbdba 1497 case RTSP_LOWER_TRANSPORT_TCP:
8b1ab7bf 1498 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1617ad97 1499 break;
90abbdba
RB
1500 case RTSP_LOWER_TRANSPORT_UDP:
1501 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
8b1ab7bf 1502 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
0a861b6f
RB
1503 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1504 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1617ad97
FB
1505 break;
1506 }
8b1ab7bf 1507 if (len < 0)
489b0d4d 1508 return len;
119b4668 1509 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1510 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
4fce284c 1511 else
0a861b6f 1512 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
8b1ab7bf
FB
1513 if (ret < 0)
1514 goto redo;
1515 if (ret == 1) {
1516 /* more packets may follow, so we save the RTP context */
0a861b6f 1517 rt->cur_transport_priv = rtsp_st->transport_priv;
8b1ab7bf 1518 }
30e79845
RB
1519
1520 /* send dummy request to keep TCP connection alive */
1521 if ((rt->server_type == RTSP_SERVER_WMS ||
1522 rt->server_type == RTSP_SERVER_REAL) &&
1523 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1524 if (rt->server_type == RTSP_SERVER_WMS) {
1525 snprintf(cmd, sizeof(cmd) - 1,
1526 "GET_PARAMETER %s RTSP/1.0\r\n",
1527 s->filename);
1528 rtsp_send_cmd_async(s, cmd, reply, NULL);
1529 } else {
1530 rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n",
1531 reply, NULL);
1532 }
1533 }
1534
8b1ab7bf 1535 return 0;
1617ad97
FB
1536}
1537
ff762d6e 1538static int rtsp_read_play(AVFormatContext *s)
b7b8fc34 1539{
ff762d6e 1540 RTSPState *rt = s->priv_data;
a9e534d5 1541 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1542 char cmd[1024];
1543
bc874dae 1544 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
ff762d6e 1545
2e889ae4 1546 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1547 if (rt->state == RTSP_STATE_PAUSED) {
1548 snprintf(cmd, sizeof(cmd),
1549 "PLAY %s RTSP/1.0\r\n",
1550 s->filename);
1551 } else {
1552 snprintf(cmd, sizeof(cmd),
1553 "PLAY %s RTSP/1.0\r\n"
1554 "Range: npt=%0.3f-\r\n",
1555 s->filename,
1556 (double)rt->seek_timestamp / AV_TIME_BASE);
1557 }
1558 rtsp_send_cmd(s, cmd, reply, NULL);
1559 if (reply->status_code != RTSP_STATUS_OK) {
1560 return -1;
1561 }
1256d16b 1562 }
5f86057f
RB
1563 rt->state = RTSP_STATE_PLAYING;
1564 return 0;
b7b8fc34
FB
1565}
1566
ff762d6e
FB
1567/* pause the stream */
1568static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1569{
ff762d6e 1570 RTSPState *rt = s->priv_data;
a9e534d5 1571 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1572 char cmd[1024];
1573
b7b8fc34 1574 rt = s->priv_data;
115329f1 1575
ff762d6e
FB
1576 if (rt->state != RTSP_STATE_PLAYING)
1577 return 0;
2e889ae4 1578 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1579 snprintf(cmd, sizeof(cmd),
1580 "PAUSE %s RTSP/1.0\r\n",
1581 s->filename);
1582 rtsp_send_cmd(s, cmd, reply, NULL);
1583 if (reply->status_code != RTSP_STATUS_OK) {
1584 return -1;
1585 }
1256d16b 1586 }
5f86057f
RB
1587 rt->state = RTSP_STATE_PAUSED;
1588 return 0;
b7b8fc34
FB
1589}
1590
115329f1 1591static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1592 int64_t timestamp, int flags)
ff762d6e
FB
1593{
1594 RTSPState *rt = s->priv_data;
115329f1 1595
50755217 1596 rt->seek_timestamp = av_rescale_q(timestamp, s->streams[stream_index]->time_base, AV_TIME_BASE_Q);
ff762d6e
FB
1597 switch(rt->state) {
1598 default:
1599 case RTSP_STATE_IDLE:
1600 break;
1601 case RTSP_STATE_PLAYING:
1602 if (rtsp_read_play(s) != 0)
1603 return -1;
1604 break;
1605 case RTSP_STATE_PAUSED:
1606 rt->state = RTSP_STATE_IDLE;
1607 break;
1608 }
1609 return 0;
1610}
1611
1617ad97
FB
1612static int rtsp_read_close(AVFormatContext *s)
1613{
1614 RTSPState *rt = s->priv_data;
a9e534d5 1615 RTSPMessageHeader reply1, *reply = &reply1;
1617ad97
FB
1616 char cmd[1024];
1617
b6892136 1618#if 0
1617ad97 1619 /* NOTE: it is valid to flush the buffer here */
90abbdba 1620 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1621 url_fclose(&rt->rtsp_gb);
1622 }
b6892136 1623#endif
115329f1 1624 snprintf(cmd, sizeof(cmd),
b6892136 1625 "TEARDOWN %s RTSP/1.0\r\n",
1617ad97
FB
1626 s->filename);
1627 rtsp_send_cmd(s, cmd, reply, NULL);
1628
8b1ab7bf 1629 rtsp_close_streams(rt);
1617ad97
FB
1630 url_close(rt->rtsp_hd);
1631 return 0;
1632}
1633
b250f9c6 1634#if CONFIG_RTSP_DEMUXER
d2a067d1 1635AVInputFormat rtsp_demuxer = {
1617ad97 1636 "rtsp",
bde15e74 1637 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1638 sizeof(RTSPState),
1639 rtsp_probe,
1640 rtsp_read_header,
1641 rtsp_read_packet,
1642 rtsp_read_close,
ff762d6e 1643 rtsp_read_seek,
bb76a117 1644 .flags = AVFMT_NOFILE,
ff762d6e
FB
1645 .read_play = rtsp_read_play,
1646 .read_pause = rtsp_read_pause,
1617ad97 1647};
96862926 1648#endif
1617ad97 1649
cb1fdc61 1650static int sdp_probe(AVProbeData *p1)
93ced3e8 1651{
0e1ceacd 1652 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1653
1654 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1655 while (p < p_end && *p != '\0') {
f7d78f36 1656 if (p + sizeof("c=IN IP4") - 1 < p_end && av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1657 return AVPROBE_SCORE_MAX / 2;
0e1ceacd
MN
1658
1659 while(p < p_end - 1 && *p != '\n') p++;
1660 if (++p >= p_end)
cb1fdc61 1661 break;
cb1fdc61
FB
1662 if (*p == '\r')
1663 p++;
1664 }
93ced3e8
FB
1665 return 0;
1666}
1667
1668#define SDP_MAX_SIZE 8192
1669
1670static int sdp_read_header(AVFormatContext *s,
1671 AVFormatParameters *ap)
1672{
8b1ab7bf 1673 RTSPState *rt = s->priv_data;
93ced3e8
FB
1674 RTSPStream *rtsp_st;
1675 int size, i, err;
1676 char *content;
1677 char url[1024];
1678
1679 /* read the whole sdp file */
1680 /* XXX: better loading */
1681 content = av_malloc(SDP_MAX_SIZE);
899681cd 1682 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1683 if (size <= 0) {
1684 av_free(content);
1685 return AVERROR_INVALIDDATA;
1686 }
1687 content[size] ='\0';
1688
1689 sdp_parse(s, content);
1690 av_free(content);
1691
1692 /* open each RTP stream */
8b1ab7bf
FB
1693 for(i=0;i<rt->nb_rtsp_streams;i++) {
1694 rtsp_st = rt->rtsp_streams[i];
115329f1 1695
d2bf42be 1696 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
115329f1 1697 inet_ntoa(rtsp_st->sdp_ip),
93ced3e8 1698 rtsp_st->sdp_port,
d2bf42be 1699 rtsp_st->sdp_port,
93ced3e8 1700 rtsp_st->sdp_ttl);
dbf30963 1701 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1702 err = AVERROR_INVALIDDATA;
1703 goto fail;
1704 }
ee0cb67f 1705 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1706 goto fail;
93ced3e8
FB
1707 }
1708 return 0;
1709 fail:
8b1ab7bf 1710 rtsp_close_streams(rt);
93ced3e8
FB
1711 return err;
1712}
1713
1714static int sdp_read_packet(AVFormatContext *s,
1715 AVPacket *pkt)
1716{
8b1ab7bf 1717 return rtsp_read_packet(s, pkt);
93ced3e8
FB
1718}
1719
1720static int sdp_read_close(AVFormatContext *s)
1721{
8b1ab7bf
FB
1722 RTSPState *rt = s->priv_data;
1723 rtsp_close_streams(rt);
93ced3e8
FB
1724 return 0;
1725}
1726
b250f9c6 1727#if CONFIG_SDP_DEMUXER
ff70e601 1728AVInputFormat sdp_demuxer = {
93ced3e8 1729 "sdp",
bde15e74 1730 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1731 sizeof(RTSPState),
1732 sdp_probe,
1733 sdp_read_header,
1734 sdp_read_packet,
1735 sdp_read_close,
1736};
ff70e601 1737#endif
93ced3e8 1738
b250f9c6 1739#if CONFIG_REDIR_DEMUXER
1617ad97
FB
1740/* dummy redirector format (used directly in av_open_input_file now) */
1741static int redir_probe(AVProbeData *pd)
1742{
1743 const char *p;
1744 p = pd->buf;
36aa7bc2 1745 skip_spaces(&p);
f7d78f36
MR
1746 if (av_strstart(p, "http://", NULL) ||
1747 av_strstart(p, "rtsp://", NULL))
1617ad97
FB
1748 return AVPROBE_SCORE_MAX;
1749 return 0;
1750}
1751
e8acf0ed 1752static int redir_read_header(AVFormatContext *s, AVFormatParameters *ap)
1617ad97
FB
1753{
1754 char buf[4096], *q;
1755 int c;
1756 AVFormatContext *ic = NULL;
e8acf0ed 1757 ByteIOContext *f = s->pb;
1617ad97
FB
1758
1759 /* parse each URL and try to open it */
1760 c = url_fgetc(f);
1761 while (c != URL_EOF) {
1762 /* skip spaces */
1763 for(;;) {
1764 if (!redir_isspace(c))
1765 break;
1766 c = url_fgetc(f);
1767 }
1768 if (c == URL_EOF)
1769 break;
1770 /* record url */
1771 q = buf;
1772 for(;;) {
1773 if (c == URL_EOF || redir_isspace(c))
1774 break;
1775 if ((q - buf) < sizeof(buf) - 1)
1776 *q++ = c;
1777 c = url_fgetc(f);
1778 }
1779 *q = '\0';
1780 //printf("URL='%s'\n", buf);
1781 /* try to open the media file */
1782 if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
1783 break;
1784 }
1617ad97 1785 if (!ic)
6f3e0b21 1786 return AVERROR(EIO);
e8acf0ed
LA
1787
1788 *s = *ic;
1789 url_fclose(f);
1790
1791 return 0;
1617ad97
FB
1792}
1793
d2a067d1 1794AVInputFormat redir_demuxer = {
1617ad97 1795 "redir",
bde15e74 1796 NULL_IF_CONFIG_SMALL("Redirector format"),
1617ad97
FB
1797 0,
1798 redir_probe,
e8acf0ed 1799 redir_read_header,
1617ad97
FB
1800 NULL,
1801 NULL,
1802};
e7047005 1803#endif