Remove ancient redir demuxer.
[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
f9337897 25#include "libavutil/base64.h"
245976da 26#include "libavutil/avstring.h"
6a5d31ac 27#include "libavutil/intreadwrite.h"
1617ad97
FB
28#include "avformat.h"
29
db0ed93e 30#include <sys/time.h>
b250f9c6 31#if HAVE_SYS_SELECT_H
933bd8e2 32#include <sys/select.h>
6ad1c9c9 33#endif
ea452b54 34#include <strings.h>
42572ef5 35#include "network.h"
c971ff19 36#include "rtsp.h"
1617ad97 37
302879cb 38#include "rtpdec.h"
e9dea59f 39#include "rdt.h"
1a30d541 40#include "rtp_asf.h"
e6327fba 41#include "rtp_vorbis.h"
4934884a 42
1617ad97 43//#define DEBUG
b6892136 44//#define DEBUG_RTP_TCP
1617ad97 45
ff762d6e
FB
46static int rtsp_read_play(AVFormatContext *s);
47
c482500f 48#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 49int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 50#endif
85fb7b34 51
1617ad97
FB
52static int rtsp_probe(AVProbeData *p)
53{
f7d78f36 54 if (av_strstart(p->filename, "rtsp:", NULL))
1617ad97
FB
55 return AVPROBE_SCORE_MAX;
56 return 0;
57}
58
1ef36a70 59#define SPACE_CHARS " \t\r\n"
da1e126e
RB
60/* we use memchr() instead of strchr() here because strchr() will return
61 * the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */
62#define redir_isspace(c) memchr(SPACE_CHARS, c, 4)
1617ad97
FB
63static void skip_spaces(const char **pp)
64{
65 const char *p;
66 p = *pp;
67 while (redir_isspace(*p))
68 p++;
69 *pp = p;
70}
71
1ef36a70
RB
72static void get_word_until_chars(char *buf, int buf_size,
73 const char *sep, const char **pp)
1617ad97
FB
74{
75 const char *p;
76 char *q;
77
78 p = *pp;
79 skip_spaces(&p);
80 q = buf;
81 while (!strchr(sep, *p) && *p != '\0') {
82 if ((q - buf) < buf_size - 1)
83 *q++ = *p;
84 p++;
85 }
86 if (buf_size > 0)
87 *q = '\0';
88 *pp = p;
89}
90
1ef36a70
RB
91static void get_word_sep(char *buf, int buf_size, const char *sep,
92 const char **pp)
1617ad97 93{
1ef36a70
RB
94 if (**pp == '/') (*pp)++;
95 get_word_until_chars(buf, buf_size, sep, pp);
96}
1617ad97 97
1ef36a70
RB
98static void get_word(char *buf, int buf_size, const char **pp)
99{
100 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
101}
102
93ced3e8
FB
103/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other
104 params>] */
4934884a 105static int sdp_parse_rtpmap(AVCodecContext *codec, RTSPStream *rtsp_st, int payload_type, const char *p)
93ced3e8
FB
106{
107 char buf[256];
d1ccf0e0
RD
108 int i;
109 AVCodec *c;
7b49ce2e 110 const char *c_name;
93ced3e8 111
d1ccf0e0
RD
112 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
113 see if we can handle this kind of payload */
93ced3e8 114 get_word_sep(buf, sizeof(buf), "/", &p);
d1ccf0e0 115 if (payload_type >= RTP_PT_PRIVATE) {
4934884a
RM
116 RTPDynamicProtocolHandler *handler= RTPFirstDynamicPayloadHandler;
117 while(handler) {
743b3890 118 if (!strcasecmp(buf, handler->enc_name) && (codec->codec_type == handler->codec_type)) {
4934884a
RM
119 codec->codec_id = handler->codec_id;
120 rtsp_st->dynamic_handler= handler;
121 if(handler->open) {
122 rtsp_st->dynamic_protocol_context= handler->open();
123 }
d1ccf0e0
RD
124 break;
125 }
4934884a
RM
126 handler= handler->next;
127 }
93ced3e8 128 } else {
d1ccf0e0
RD
129 /* We are in a standard case ( from http://www.iana.org/assignments/rtp-parameters) */
130 /* search into AVRtpPayloadTypes[] */
7ed19d7f 131 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
132 }
133
134 c = avcodec_find_decoder(codec->codec_id);
135 if (c && c->name)
7b49ce2e 136 c_name = c->name;
d1ccf0e0
RD
137 else
138 c_name = (char *)NULL;
139
140 if (c_name) {
141 get_word_sep(buf, sizeof(buf), "/", &p);
142 i = atoi(buf);
143 switch (codec->codec_type) {
144 case CODEC_TYPE_AUDIO:
145 av_log(codec, AV_LOG_DEBUG, " audio codec set to : %s\n", c_name);
146 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
147 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
148 if (i > 0) {
149 codec->sample_rate = i;
150 get_word_sep(buf, sizeof(buf), "/", &p);
151 i = atoi(buf);
152 if (i > 0)
153 codec->channels = i;
d0deedcb
RM
154 // TODO: there is a bug here; if it is a mono stream, and less than 22000Hz, faad upconverts to stereo and twice the
155 // frequency. No problem, but the sample rate is being set here by the sdp line. Upcoming patch forthcoming. (rdm)
d1ccf0e0
RD
156 }
157 av_log(codec, AV_LOG_DEBUG, " audio samplerate set to : %i\n", codec->sample_rate);
158 av_log(codec, AV_LOG_DEBUG, " audio channels set to : %i\n", codec->channels);
159 break;
160 case CODEC_TYPE_VIDEO:
161 av_log(codec, AV_LOG_DEBUG, " video codec set to : %s\n", c_name);
162 break;
163 default:
164 break;
165 }
166 return 0;
93ced3e8 167 }
d1ccf0e0
RD
168
169 return -1;
93ced3e8
FB
170}
171
172/* return the length and optionnaly the data */
173static int hex_to_data(uint8_t *data, const char *p)
174{
175 int c, len, v;
176
177 len = 0;
178 v = 1;
179 for(;;) {
180 skip_spaces(&p);
6a8c8b36 181 if (*p == '\0')
93ced3e8
FB
182 break;
183 c = toupper((unsigned char)*p++);
184 if (c >= '0' && c <= '9')
185 c = c - '0';
186 else if (c >= 'A' && c <= 'F')
187 c = c - 'A' + 10;
188 else
189 break;
190 v = (v << 4) | c;
191 if (v & 0x100) {
192 if (data)
193 data[len] = v;
194 len++;
195 v = 1;
196 }
197 }
198 return len;
199}
200
e6327fba
RB
201static void sdp_parse_fmtp_config(AVCodecContext * codec, void *ctx,
202 char *attr, char *value)
d1ccf0e0
RD
203{
204 switch (codec->codec_id) {
205 case CODEC_ID_MPEG4:
cbee7a69 206 case CODEC_ID_AAC:
d1ccf0e0
RD
207 if (!strcmp(attr, "config")) {
208 /* decode the hexa encoded parameter */
209 int len = hex_to_data(NULL, value);
7d09a993
RB
210 if (codec->extradata)
211 av_free(codec->extradata);
d1ccf0e0
RD
212 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
213 if (!codec->extradata)
214 return;
215 codec->extradata_size = len;
216 hex_to_data(codec->extradata, value);
217 }
218 break;
e6327fba
RB
219 case CODEC_ID_VORBIS:
220 ff_vorbis_parse_fmtp_config(codec, ctx, attr, value);
221 break;
d1ccf0e0
RD
222 default:
223 break;
224 }
225 return;
226}
227
644e7acb 228typedef struct {
7b49ce2e 229 const char *str;
d1ccf0e0
RD
230 uint16_t type;
231 uint32_t offset;
644e7acb 232} AttrNameMap;
d1ccf0e0
RD
233
234/* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
235#define ATTR_NAME_TYPE_INT 0
236#define ATTR_NAME_TYPE_STR 1
644e7acb 237static const AttrNameMap attr_names[]=
d1ccf0e0 238{
be73a544
LA
239 {"SizeLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, sizelength)},
240 {"IndexLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexlength)},
241 {"IndexDeltaLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexdeltalength)},
242 {"profile-level-id", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, profile_level_id)},
243 {"StreamType", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, streamtype)},
244 {"mode", ATTR_NAME_TYPE_STR, offsetof(RTPPayloadData, mode)},
d1ccf0e0
RD
245 {NULL, -1, -1},
246};
247
d0deedcb
RM
248/** parse the attribute line from the fmtp a line of an sdp resonse. This is broken out as a function
249* because it is used in rtp_h264.c, which is forthcoming.
250*/
251int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size)
252{
253 skip_spaces(p);
78f731de 254 if(**p) {
d0deedcb
RM
255 get_word_sep(attr, attr_size, "=", p);
256 if (**p == '=')
257 (*p)++;
258 get_word_sep(value, value_size, ";", p);
259 if (**p == ';')
260 (*p)++;
261 return 1;
262 }
263 return 0;
264}
265
d1ccf0e0
RD
266/* parse a SDP line and save stream attributes */
267static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
268{
269 char attr[256];
373afbaf
RB
270 /* Vorbis setup headers can be up to 12KB and are sent base64
271 * encoded, giving a 12KB * (4/3) = 16KB FMTP line. */
272 char value[16384];
d1ccf0e0
RD
273 int i;
274
275 RTSPStream *rtsp_st = st->priv_data;
01f4895c 276 AVCodecContext *codec = st->codec;
be73a544 277 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
278
279 /* loop on each attribute */
1ad20f96
RM
280 while(rtsp_next_attr_and_value(&p, attr, sizeof(attr), value, sizeof(value)))
281 {
bb270c08 282 /* grab the codec extra_data from the config parameter of the fmtp line */
e6327fba
RB
283 sdp_parse_fmtp_config(codec, rtsp_st->dynamic_protocol_context,
284 attr, value);
d1ccf0e0
RD
285 /* Looking for a known attribute */
286 for (i = 0; attr_names[i].str; ++i) {
287 if (!strcasecmp(attr, attr_names[i].str)) {
288 if (attr_names[i].type == ATTR_NAME_TYPE_INT)
289 *(int *)((char *)rtp_payload_data + attr_names[i].offset) = atoi(value);
290 else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
291 *(char **)((char *)rtp_payload_data + attr_names[i].offset) = av_strdup(value);
bb270c08 292 }
93ced3e8 293 }
93ced3e8
FB
294 }
295}
296
31693e00
RM
297/** Parse a string \p in the form of Range:npt=xx-xx, and determine the start
298 * and end time.
299 * Used for seeking in the rtp stream.
300 */
301static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
302{
303 char buf[256];
304
305 skip_spaces(&p);
f7d78f36 306 if (!av_stristart(p, "npt=", &p))
31693e00
RM
307 return;
308
309 *start = AV_NOPTS_VALUE;
310 *end = AV_NOPTS_VALUE;
311
312 get_word_sep(buf, sizeof(buf), "-", &p);
313 *start = parse_date(buf, 1);
314 if (*p == '-') {
315 p++;
316 get_word_sep(buf, sizeof(buf), "-", &p);
317 *end = parse_date(buf, 1);
318 }
319// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
320// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
321}
322
93ced3e8
FB
323typedef struct SDPParseState {
324 /* SDP only */
325 struct in_addr default_ip;
326 int default_ttl;
cb760a47 327 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
328} SDPParseState;
329
330static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
331 int letter, const char *buf)
332{
8b1ab7bf 333 RTSPState *rt = s->priv_data;
1617ad97
FB
334 char buf1[64], st_type[64];
335 const char *p;
fb65d2ca
DP
336 enum CodecType codec_type;
337 int payload_type, i;
1617ad97
FB
338 AVStream *st;
339 RTSPStream *rtsp_st;
93ced3e8
FB
340 struct in_addr sdp_ip;
341 int ttl;
342
67c9cd69 343 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
344
345 p = buf;
cb760a47
RB
346 if (s1->skip_media && letter != 'm')
347 return;
1617ad97 348 switch(letter) {
93ced3e8
FB
349 case 'c':
350 get_word(buf1, sizeof(buf1), &p);
351 if (strcmp(buf1, "IN") != 0)
352 return;
353 get_word(buf1, sizeof(buf1), &p);
354 if (strcmp(buf1, "IP4") != 0)
355 return;
356 get_word_sep(buf1, sizeof(buf1), "/", &p);
357 if (inet_aton(buf1, &sdp_ip) == 0)
358 return;
359 ttl = 16;
360 if (*p == '/') {
361 p++;
362 get_word_sep(buf1, sizeof(buf1), "/", &p);
363 ttl = atoi(buf1);
364 }
365 if (s->nb_streams == 0) {
366 s1->default_ip = sdp_ip;
367 s1->default_ttl = ttl;
368 } else {
369 st = s->streams[s->nb_streams - 1];
370 rtsp_st = st->priv_data;
371 rtsp_st->sdp_ip = sdp_ip;
372 rtsp_st->sdp_ttl = ttl;
373 }
374 break;
1617ad97 375 case 's':
da61e413 376 av_metadata_set(&s->metadata, "title", p);
1617ad97
FB
377 break;
378 case 'i':
379 if (s->nb_streams == 0) {
da61e413 380 av_metadata_set(&s->metadata, "comment", p);
1617ad97
FB
381 break;
382 }
383 break;
384 case 'm':
385 /* new stream */
cb760a47 386 s1->skip_media = 0;
1617ad97
FB
387 get_word(st_type, sizeof(st_type), &p);
388 if (!strcmp(st_type, "audio")) {
389 codec_type = CODEC_TYPE_AUDIO;
390 } else if (!strcmp(st_type, "video")) {
391 codec_type = CODEC_TYPE_VIDEO;
090438cc
RB
392 } else if (!strcmp(st_type, "application")) {
393 codec_type = CODEC_TYPE_DATA;
1617ad97 394 } else {
cb760a47 395 s1->skip_media = 1;
1617ad97
FB
396 return;
397 }
1617ad97
FB
398 rtsp_st = av_mallocz(sizeof(RTSPStream));
399 if (!rtsp_st)
400 return;
8b1ab7bf
FB
401 rtsp_st->stream_index = -1;
402 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
403
404 rtsp_st->sdp_ip = s1->default_ip;
405 rtsp_st->sdp_ttl = s1->default_ttl;
406
93ced3e8
FB
407 get_word(buf1, sizeof(buf1), &p); /* port */
408 rtsp_st->sdp_port = atoi(buf1);
409
410 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 411
93ced3e8
FB
412 /* XXX: handle list of formats */
413 get_word(buf1, sizeof(buf1), &p); /* format list */
414 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 415
7ed19d7f 416 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
417 /* no corresponding stream */
418 } else {
419 st = av_new_stream(s, 0);
420 if (!st)
421 return;
422 st->priv_data = rtsp_st;
423 rtsp_st->stream_index = st->index;
01f4895c 424 st->codec->codec_type = codec_type;
d1ccf0e0 425 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 426 /* if standard payload type, we can find the codec right now */
bf6d9818 427 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
428 }
429 }
1617ad97 430 /* put a default control url */
75e61b0e 431 av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url));
1617ad97
FB
432 break;
433 case 'a':
f7d78f36 434 if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
1617ad97
FB
435 char proto[32];
436 /* get the control url */
437 st = s->streams[s->nb_streams - 1];
438 rtsp_st = st->priv_data;
115329f1 439
1617ad97 440 /* XXX: may need to add full url resolution */
6ba5cbc6 441 url_split(proto, sizeof(proto), NULL, 0, NULL, 0, NULL, NULL, 0, p);
1617ad97
FB
442 if (proto[0] == '\0') {
443 /* relative control URL */
75e61b0e
MR
444 av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url));
445 av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 446 } else {
75e61b0e 447 av_strlcpy(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 448 }
83d14c85 449 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 450 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 451 get_word(buf1, sizeof(buf1), &p);
93ced3e8 452 payload_type = atoi(buf1);
83d14c85 453 st = s->streams[s->nb_streams - 1];
ff16f551
RB
454 rtsp_st = st->priv_data;
455 sdp_parse_rtpmap(st->codec, rtsp_st, payload_type, p);
f7d78f36 456 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 457 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 458 get_word(buf1, sizeof(buf1), &p);
93ced3e8
FB
459 payload_type = atoi(buf1);
460 for(i = 0; i < s->nb_streams;i++) {
461 st = s->streams[i];
462 rtsp_st = st->priv_data;
463 if (rtsp_st->sdp_payload_type == payload_type) {
4934884a 464 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 465 if(!rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf)) {
4934884a
RM
466 sdp_parse_fmtp(st, p);
467 }
468 } else {
ed787542 469 sdp_parse_fmtp(st, p);
4934884a 470 }
93ced3e8
FB
471 }
472 }
f7d78f36 473 } else if(av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
474 // let dynamic protocol handlers have a stab at the line.
475 get_word(buf1, sizeof(buf1), &p);
476 payload_type = atoi(buf1);
477 for(i = 0; i < s->nb_streams;i++) {
478 st = s->streams[i];
479 rtsp_st = st->priv_data;
480 if (rtsp_st->sdp_payload_type == payload_type) {
481 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 482 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf);
d0deedcb
RM
483 }
484 }
485 }
f7d78f36 486 } else if(av_strstart(p, "range:", &p)) {
31693e00
RM
487 int64_t start, end;
488
489 // this is so that seeking on a streamed file can work.
490 rtsp_parse_range_npt(p, &start, &end);
491 s->start_time= start;
492 s->duration= (end==AV_NOPTS_VALUE)?AV_NOPTS_VALUE:end-start; // AV_NOPTS_VALUE means live broadcast (and can't seek)
119b4668
RB
493 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
494 if (atoi(p) == 1)
495 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
496 } else {
497 if (rt->server_type == RTSP_SERVER_WMS)
498 ff_wms_parse_sdp_a_line(s, p);
499 if (s->nb_streams > 0) {
c4a3d032
RB
500 if (rt->server_type == RTSP_SERVER_REAL)
501 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
502
503 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
504 if (rtsp_st->dynamic_handler &&
505 rtsp_st->dynamic_handler->parse_sdp_a_line)
506 rtsp_st->dynamic_handler->parse_sdp_a_line(s, s->nb_streams - 1,
507 rtsp_st->dynamic_protocol_context, buf);
1a30d541 508 }
1617ad97
FB
509 }
510 break;
511 }
512}
513
5c91a675 514static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
515{
516 const char *p;
517 int letter;
9211bcdd
RB
518 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
519 * contain long SDP lines containing complete ASF Headers (several
520 * kB) or arrays of MDPR (RM stream descriptor) headers plus
521 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
522 * buffer is large.
523 *
524 * The Vorbis FMTP line can be up to 16KB - see sdp_parse_fmtp. */
525 char buf[16384], *q;
93ced3e8 526 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 527
93ced3e8 528 memset(s1, 0, sizeof(SDPParseState));
1617ad97
FB
529 p = content;
530 for(;;) {
531 skip_spaces(&p);
532 letter = *p;
533 if (letter == '\0')
534 break;
535 p++;
536 if (*p != '=')
537 goto next_line;
538 p++;
539 /* get the content */
540 q = buf;
b6892136 541 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
542 if ((q - buf) < sizeof(buf) - 1)
543 *q++ = *p;
544 p++;
545 }
546 *q = '\0';
93ced3e8 547 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
548 next_line:
549 while (*p != '\n' && *p != '\0')
550 p++;
551 if (*p == '\n')
552 p++;
553 }
554 return 0;
555}
556
557static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
558{
559 const char *p;
560 int v;
561
562 p = *pp;
563 skip_spaces(&p);
564 v = strtol(p, (char **)&p, 10);
565 if (*p == '-') {
566 p++;
567 *min_ptr = v;
568 v = strtol(p, (char **)&p, 10);
569 *max_ptr = v;
570 } else {
571 *min_ptr = v;
572 *max_ptr = v;
573 }
574 *pp = p;
575}
576
577/* XXX: only one transport specification is parsed */
a9e534d5 578static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
579{
580 char transport_protocol[16];
581 char profile[16];
582 char lower_transport[16];
583 char parameter[16];
584 RTSPTransportField *th;
585 char buf[256];
115329f1 586
1617ad97 587 reply->nb_transports = 0;
115329f1 588
1617ad97
FB
589 for(;;) {
590 skip_spaces(&p);
591 if (*p == '\0')
592 break;
593
594 th = &reply->transports[reply->nb_transports];
595
115329f1 596 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 597 "/", &p);
e1502118 598 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
599 get_word_sep(profile, sizeof(profile), "/;,", &p);
600 lower_transport[0] = '\0';
601 /* rtp/avp/<protocol> */
602 if (*p == '/') {
7ecc634e
LB
603 get_word_sep(lower_transport, sizeof(lower_transport),
604 ";,", &p);
119b4668
RB
605 }
606 th->transport = RTSP_TRANSPORT_RTP;
607 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
608 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 609 /* x-pn-tng/<protocol> */
e1502118
LB
610 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
611 profile[0] = '\0';
119b4668 612 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 613 }
b6892136 614 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 615 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 616 else
90abbdba 617 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 618
1617ad97
FB
619 if (*p == ';')
620 p++;
621 /* get each parameter */
622 while (*p != '\0' && *p != ',') {
623 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
624 if (!strcmp(parameter, "port")) {
625 if (*p == '=') {
626 p++;
627 rtsp_parse_range(&th->port_min, &th->port_max, &p);
628 }
629 } else if (!strcmp(parameter, "client_port")) {
630 if (*p == '=') {
631 p++;
115329f1 632 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
633 &th->client_port_max, &p);
634 }
635 } else if (!strcmp(parameter, "server_port")) {
636 if (*p == '=') {
637 p++;
115329f1 638 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
639 &th->server_port_max, &p);
640 }
641 } else if (!strcmp(parameter, "interleaved")) {
642 if (*p == '=') {
643 p++;
115329f1 644 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
645 &th->interleaved_max, &p);
646 }
647 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
648 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
649 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
650 } else if (!strcmp(parameter, "ttl")) {
651 if (*p == '=') {
652 p++;
653 th->ttl = strtol(p, (char **)&p, 10);
654 }
655 } else if (!strcmp(parameter, "destination")) {
656 struct in_addr ipaddr;
657
658 if (*p == '=') {
659 p++;
660 get_word_sep(buf, sizeof(buf), ";,", &p);
115329f1 661 if (inet_aton(buf, &ipaddr))
1617ad97
FB
662 th->destination = ntohl(ipaddr.s_addr);
663 }
664 }
665 while (*p != ';' && *p != '\0' && *p != ',')
666 p++;
667 if (*p == ';')
668 p++;
669 }
670 if (*p == ',')
671 p++;
672
673 reply->nb_transports++;
674 }
675}
676
a9e534d5 677void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
678{
679 const char *p;
680
681 /* NOTE: we do case independent match for broken servers */
682 p = buf;
f7d78f36 683 if (av_stristart(p, "Session:", &p)) {
30e79845 684 int t;
1617ad97 685 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
686 if (av_stristart(p, ";timeout=", &p) &&
687 (t = strtol(p, NULL, 10)) > 0) {
688 reply->timeout = t;
689 }
f7d78f36 690 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 691 reply->content_length = strtol(p, NULL, 10);
f7d78f36 692 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 693 rtsp_parse_transport(reply, p);
f7d78f36 694 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 695 reply->seq = strtol(p, NULL, 10);
f7d78f36 696 } else if (av_stristart(p, "Range:", &p)) {
31693e00 697 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
698 } else if (av_stristart(p, "RealChallenge1:", &p)) {
699 skip_spaces(&p);
700 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
701 } else if (av_stristart(p, "Server:", &p)) {
702 skip_spaces(&p);
703 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
704 } else if (av_stristart(p, "Notice:", &p) ||
705 av_stristart(p, "X-Notice:", &p)) {
706 reply->notice = strtol(p, NULL, 10);
1617ad97
FB
707 }
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
0e848977 717 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
718 if (ret != 3)
719 return;
80fb8234 720 len = AV_RB16(buf + 1);
67c9cd69
BC
721
722 dprintf(s, "skipping RTP packet len=%d\n", len);
723
b7b8fc34
FB
724 /* skip payload */
725 while (len > 0) {
726 len1 = len;
727 if (len1 > sizeof(buf))
728 len1 = sizeof(buf);
0e848977 729 ret = url_read_complete(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(;;) {
0e848977 775 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 776#ifdef DEBUG_RTP_TCP
67c9cd69 777 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
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';
67c9cd69
BC
795
796 dprintf(s, "line='%s'\n", buf);
797
1617ad97
FB
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);
0e848977 822 (void)url_read_complete(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 829
fccb1770
RB
830 /* EOS */
831 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
832 reply->notice == 2104 /* Start-of-Stream Reached */ ||
833 reply->notice == 2306 /* Continuous Feed Terminated */)
834 rt->state = RTSP_STATE_IDLE;
835 else if (reply->notice >= 4400 && reply->notice < 5500)
836 return AVERROR(EIO); /* data or server error */
837 else if (reply->notice == 2401 /* Ticket Expired */ ||
838 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
839 return AVERROR(EPERM);
840
7e726132 841 return 0;
1617ad97
FB
842}
843
30e79845 844static void rtsp_send_cmd_async (AVFormatContext *s,
29b9f58b
RB
845 const char *cmd, RTSPMessageHeader *reply,
846 unsigned char **content_ptr)
847{
848 RTSPState *rt = s->priv_data;
849 char buf[4096], buf1[1024];
850
851 rt->seq++;
852 av_strlcpy(buf, cmd, sizeof(buf));
853 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
854 av_strlcat(buf, buf1, sizeof(buf));
855 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
856 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
857 av_strlcat(buf, buf1, sizeof(buf));
858 }
f9337897
RB
859 if (rt->auth_b64)
860 av_strlcatf(buf, sizeof(buf),
ba93ea6d
RB
861 "Authorization: Basic %s\r\n",
862 rt->auth_b64);
29b9f58b 863 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69
BC
864
865 dprintf(s, "Sending:\n%s--\n", buf);
866
29b9f58b 867 url_write(rt->rtsp_hd, buf, strlen(buf));
30e79845
RB
868 rt->last_cmd_time = av_gettime();
869}
870
871static void rtsp_send_cmd (AVFormatContext *s,
872 const char *cmd, RTSPMessageHeader *reply,
873 unsigned char **content_ptr)
874{
875 rtsp_send_cmd_async(s, cmd, reply, content_ptr);
29b9f58b 876
7e726132 877 rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
878}
879
1617ad97 880
8b1ab7bf
FB
881/* close and free RTSP streams */
882static void rtsp_close_streams(RTSPState *rt)
883{
884 int i;
885 RTSPStream *rtsp_st;
886
887 for(i=0;i<rt->nb_rtsp_streams;i++) {
888 rtsp_st = rt->rtsp_streams[i];
889 if (rtsp_st) {
0a861b6f 890 if (rtsp_st->transport_priv) {
accc248f 891 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 892 ff_rdt_parse_close(rtsp_st->transport_priv);
accc248f 893 else
0a861b6f 894 rtp_parse_close(rtsp_st->transport_priv);
accc248f 895 }
8b1ab7bf
FB
896 if (rtsp_st->rtp_handle)
897 url_close(rtsp_st->rtp_handle);
4934884a
RM
898 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
899 rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
8b1ab7bf 900 }
8b1ab7bf
FB
901 }
902 av_free(rt->rtsp_streams);
1a30d541
RB
903 if (rt->asf_ctx) {
904 av_close_input_stream (rt->asf_ctx);
905 rt->asf_ctx = NULL;
906 }
f9337897 907 av_freep(&rt->auth_b64);
8b1ab7bf
FB
908}
909
ee0cb67f
RB
910static int
911rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
912{
accc248f 913 RTSPState *rt = s->priv_data;
ee0cb67f
RB
914 AVStream *st = NULL;
915
a6789dca
RB
916 /* open the RTP context */
917 if (rtsp_st->stream_index >= 0)
918 st = s->streams[rtsp_st->stream_index];
919 if (!st)
920 s->ctx_flags |= AVFMTCTX_NOHEADER;
accc248f
RB
921
922 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 923 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
accc248f
RB
924 rtsp_st->dynamic_protocol_context,
925 rtsp_st->dynamic_handler);
926 else
0a861b6f 927 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
5c918b27
RB
928 rtsp_st->sdp_payload_type,
929 &rtsp_st->rtp_payload_data);
a6789dca 930
0a861b6f 931 if (!rtsp_st->transport_priv) {
a6789dca 932 return AVERROR(ENOMEM);
accc248f 933 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
a6789dca 934 if(rtsp_st->dynamic_handler) {
0a861b6f 935 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
99a1d191
RB
936 rtsp_st->dynamic_protocol_context,
937 rtsp_st->dynamic_handler);
ee0cb67f 938 }
a6789dca 939 }
ee0cb67f
RB
940
941 return 0;
942}
943
53620bba
RB
944/**
945 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
946 */
947static int
e9dea59f 948make_setup_request (AVFormatContext *s, const char *host, int port,
90abbdba 949 int lower_transport, const char *real_challenge)
1617ad97
FB
950{
951 RTSPState *rt = s->priv_data;
f830c9a4 952 int rtx, j, i, err, interleave = 0;
1617ad97 953 RTSPStream *rtsp_st;
a9e534d5 954 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 955 char cmd[2048];
e9dea59f
RB
956 const char *trans_pref;
957
119b4668 958 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
959 trans_pref = "x-pn-tng";
960 else
961 trans_pref = "RTP/AVP";
115329f1 962
30e79845
RB
963 /* default timeout: 1 minute */
964 rt->timeout = 60;
965
1617ad97
FB
966 /* for each stream, make the setup request */
967 /* XXX: we assume the same server is used for the control of each
968 RTSP stream */
d1ccf0e0
RD
969
970 for(j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
971 char transport[2048];
972
f830c9a4
RB
973 /**
974 * WMS serves all UDP data over a single connection, the RTX, which
975 * isn't necessarily the first in the SDP but has to be the first
976 * to be set up, else the second/third SETUP will fail with a 461.
977 */
978 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
979 rt->server_type == RTSP_SERVER_WMS) {
980 if (i == 0) {
981 /* rtx first */
982 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
983 int len = strlen(rt->rtsp_streams[rtx]->control_url);
984 if (len >= 4 &&
985 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, "/rtx"))
986 break;
987 }
988 if (rtx == rt->nb_rtsp_streams)
989 return -1; /* no RTX found */
990 rtsp_st = rt->rtsp_streams[rtx];
991 } else
992 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
993 } else
2fea9650 994 rtsp_st = rt->rtsp_streams[i];
1617ad97 995
1617ad97 996 /* RTP/UDP */
90abbdba 997 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 998 char buf[256];
85fb7b34 999
f830c9a4
RB
1000 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1001 port = reply->transports[0].client_port_min;
1002 goto have_port;
1003 }
1004
85fb7b34 1005 /* first try in specified port range */
d1ccf0e0
RD
1006 if (RTSP_RTP_PORT_MIN != 0) {
1007 while(j <= RTSP_RTP_PORT_MAX) {
b316aa1a 1008 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d", host, j);
ecdcbbf6 1009 j += 2; /* we will use two port by rtp stream (rtp and rtcp) */
dbf30963 1010 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) {
85fb7b34 1011 goto rtp_opened;
d1ccf0e0 1012 }
85fb7b34 1013 }
1617ad97 1014 }
85fb7b34 1015
d1ccf0e0
RD
1016/* then try on any port
1017** if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1018** err = AVERROR_INVALIDDATA;
1019** goto fail;
1020** }
1021*/
85fb7b34
FB
1022
1023 rtp_opened:
8b1ab7bf 1024 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1025 have_port:
0ad306bc 1026 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1027 "%s/UDP;", trans_pref);
1028 if (rt->server_type != RTSP_SERVER_REAL)
1029 av_strlcat(transport, "unicast;", sizeof(transport));
1030 av_strlcatf(transport, sizeof(transport),
1031 "client_port=%d", port);
f830c9a4
RB
1032 if (rt->transport == RTSP_TRANSPORT_RTP &&
1033 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1034 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1035 }
1036
1037 /* RTP/TCP */
90abbdba 1038 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1039 /** For WMS streams, the application streams are only used for
1040 * UDP. When trying to set it up for TCP streams, the server
1041 * will return an error. Therefore, we skip those streams. */
1042 if (rt->server_type == RTSP_SERVER_WMS &&
1043 s->streams[rtsp_st->stream_index]->codec->codec_type == CODEC_TYPE_DATA)
1044 continue;
0ad306bc 1045 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1046 "%s/TCP;", trans_pref);
1047 if (rt->server_type == RTSP_SERVER_WMS)
1048 av_strlcat(transport, "unicast;", sizeof(transport));
1049 av_strlcatf(transport, sizeof(transport),
1050 "interleaved=%d-%d",
1051 interleave, interleave + 1);
1052 interleave += 2;
1617ad97
FB
1053 }
1054
90abbdba 1055 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1056 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1057 "%s/UDP;multicast", trans_pref);
1617ad97 1058 }
d1c6e47c
RB
1059 if (rt->server_type == RTSP_SERVER_REAL ||
1060 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1061 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1062 snprintf(cmd, sizeof(cmd),
b6892136
FB
1063 "SETUP %s RTSP/1.0\r\n"
1064 "Transport: %s\r\n",
1617ad97 1065 rtsp_st->control_url, transport);
2e889ae4 1066 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1067 char real_res[41], real_csum[9];
1068 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1069 real_challenge);
1070 av_strlcatf(cmd, sizeof(cmd),
1071 "If-Match: %s\r\n"
1072 "RealChallenge2: %s, sd=%s\r\n",
1073 rt->session_id, real_res, real_csum);
1074 }
1617ad97 1075 rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1076 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1077 err = 1;
1078 goto fail;
7e6ca34f
RB
1079 } else if (reply->status_code != RTSP_STATUS_OK ||
1080 reply->nb_transports != 1) {
1617ad97
FB
1081 err = AVERROR_INVALIDDATA;
1082 goto fail;
1083 }
1084
1085 /* XXX: same protocol for all streams is required */
1086 if (i > 0) {
119b4668
RB
1087 if (reply->transports[0].lower_transport != rt->lower_transport ||
1088 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1089 err = AVERROR_INVALIDDATA;
1090 goto fail;
1091 }
1092 } else {
90abbdba 1093 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1094 rt->transport = reply->transports[0].transport;
1617ad97
FB
1095 }
1096
1097 /* close RTP connection if not choosen */
90abbdba
RB
1098 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1099 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1100 url_close(rtsp_st->rtp_handle);
1101 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1102 }
1103
90abbdba
RB
1104 switch(reply->transports[0].lower_transport) {
1105 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1106 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1107 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1108 break;
115329f1 1109
90abbdba 1110 case RTSP_LOWER_TRANSPORT_UDP:
1617ad97
FB
1111 {
1112 char url[1024];
115329f1 1113
1617ad97 1114 /* XXX: also use address if specified */
115329f1 1115 snprintf(url, sizeof(url), "rtp://%s:%d",
1617ad97 1116 host, reply->transports[0].server_port_min);
f830c9a4
RB
1117 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1118 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1617ad97
FB
1119 err = AVERROR_INVALIDDATA;
1120 goto fail;
1121 }
1122 }
1123 break;
90abbdba 1124 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1617ad97
FB
1125 {
1126 char url[1024];
d02678ec 1127 struct in_addr in;
1617ad97 1128
d02678ec 1129 in.s_addr = htonl(reply->transports[0].destination);
35b74c3d 1130 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
d02678ec
LB
1131 inet_ntoa(in),
1132 reply->transports[0].port_min,
1133 reply->transports[0].ttl);
dbf30963 1134 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1617ad97
FB
1135 err = AVERROR_INVALIDDATA;
1136 goto fail;
1137 }
1138 }
1139 break;
1140 }
d1ccf0e0 1141
ee0cb67f 1142 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1143 goto fail;
1617ad97
FB
1144 }
1145
30e79845
RB
1146 if (reply->timeout > 0)
1147 rt->timeout = reply->timeout;
1148
2e889ae4 1149 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1150 rt->need_subscription = 1;
1151
53620bba
RB
1152 return 0;
1153
1154fail:
8a8754d8
RB
1155 for (i=0; i<rt->nb_rtsp_streams; i++) {
1156 if (rt->rtsp_streams[i]->rtp_handle) {
1157 url_close(rt->rtsp_streams[i]->rtp_handle);
1158 rt->rtsp_streams[i]->rtp_handle = NULL;
1159 }
1160 }
53620bba
RB
1161 return err;
1162}
1163
1164static int rtsp_read_header(AVFormatContext *s,
1165 AVFormatParameters *ap)
1166{
1167 RTSPState *rt = s->priv_data;
f9337897 1168 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128], *option_list, *option;
53620bba
RB
1169 URLContext *rtsp_hd;
1170 int port, ret, err;
a9e534d5 1171 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1172 unsigned char *content = NULL;
90abbdba 1173 int lower_transport_mask = 0;
1cf151e9 1174 char real_challenge[64];
53620bba
RB
1175
1176 /* extract hostname and port */
f9337897 1177 url_split(NULL, 0, auth, sizeof(auth),
53620bba 1178 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897
RB
1179 if (*auth) {
1180 int auth_len = strlen(auth), b64_len = ((auth_len + 2) / 3) * 4 + 1;
1181
1182 if (!(rt->auth_b64 = av_malloc(b64_len)))
1183 return AVERROR(ENOMEM);
1184 if (!av_base64_encode(rt->auth_b64, b64_len, auth, auth_len)) {
1185 err = AVERROR(EINVAL);
1186 goto fail;
1187 }
1188 }
53620bba
RB
1189 if (port < 0)
1190 port = RTSP_DEFAULT_PORT;
1191
1192 /* search for options */
1193 option_list = strchr(path, '?');
1194 if (option_list) {
1195 /* remove the options from the path */
1196 *option_list++ = 0;
1197 while(option_list) {
1198 /* move the option pointer */
1199 option = option_list;
1200 option_list = strchr(option_list, '&');
1201 if (option_list)
1202 *(option_list++) = 0;
1203 /* handle the options */
1204 if (strcmp(option, "udp") == 0)
90abbdba 1205 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
53620bba 1206 else if (strcmp(option, "multicast") == 0)
90abbdba 1207 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
53620bba 1208 else if (strcmp(option, "tcp") == 0)
90abbdba 1209 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
53620bba
RB
1210 }
1211 }
1212
90abbdba 1213 if (!lower_transport_mask)
2a1d51c5 1214 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba
RB
1215
1216 /* open the tcp connexion */
1217 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
f9337897
RB
1218 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) {
1219 err = AVERROR(EIO);
1220 goto fail;
1221 }
53620bba
RB
1222 rt->rtsp_hd = rtsp_hd;
1223 rt->seq = 0;
1224
1cf151e9
RB
1225 /* request options supported by the server; this also detects server type */
1226 for (rt->server_type = RTSP_SERVER_RTP;;) {
1227 snprintf(cmd, sizeof(cmd),
1228 "OPTIONS %s RTSP/1.0\r\n", s->filename);
2e889ae4 1229 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1230 av_strlcat(cmd,
1231 /**
1232 * The following entries are required for proper
1233 * streaming from a Realmedia server. They are
1234 * interdependent in some way although we currently
1235 * don't quite understand how. Values were copied
1236 * from mplayer SVN r23589.
1237 * @param CompanyID is a 16-byte ID in base64
1238 * @param ClientChallenge is a 16-byte ID in hex
1239 */
1240 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1241 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1242 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1243 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1244 sizeof(cmd));
1245 rtsp_send_cmd(s, cmd, reply, NULL);
1246 if (reply->status_code != RTSP_STATUS_OK) {
1247 err = AVERROR_INVALIDDATA;
1248 goto fail;
1249 }
1250
1251 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1252 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1253 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1254 continue;
7a86bafa
RB
1255 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1256 rt->server_type = RTSP_SERVER_WMS;
2e889ae4 1257 } else if (rt->server_type == RTSP_SERVER_REAL) {
1cf151e9
RB
1258 strcpy(real_challenge, reply->real_challenge);
1259 }
1260 break;
1261 }
1262
53620bba
RB
1263 /* describe the stream */
1264 snprintf(cmd, sizeof(cmd),
1265 "DESCRIBE %s RTSP/1.0\r\n"
1266 "Accept: application/sdp\r\n",
1267 s->filename);
2e889ae4 1268 if (rt->server_type == RTSP_SERVER_REAL) {
897ade1b
RB
1269 /**
1270 * The Require: attribute is needed for proper streaming from
1271 * Realmedia servers.
1272 */
1273 av_strlcat(cmd,
1274 "Require: com.real.retain-entity-for-setup\r\n",
1275 sizeof(cmd));
1276 }
53620bba
RB
1277 rtsp_send_cmd(s, cmd, reply, &content);
1278 if (!content) {
1279 err = AVERROR_INVALIDDATA;
1280 goto fail;
1281 }
1282 if (reply->status_code != RTSP_STATUS_OK) {
1283 err = AVERROR_INVALIDDATA;
1284 goto fail;
1285 }
1286
1287 /* now we got the SDP description, we parse it */
1288 ret = sdp_parse(s, (const char *)content);
1289 av_freep(&content);
1290 if (ret < 0) {
1291 err = AVERROR_INVALIDDATA;
1292 goto fail;
1293 }
1294
8a8754d8 1295 do {
90abbdba 1296 int lower_transport = ff_log2_tab[lower_transport_mask & ~(lower_transport_mask - 1)];
8a8754d8 1297
90abbdba 1298 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1299 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1300 real_challenge : NULL);
8a8754d8 1301 if (err < 0)
7e6ca34f 1302 goto fail;
90abbdba
RB
1303 lower_transport_mask &= ~(1 << lower_transport);
1304 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1305 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1306 goto fail;
1307 }
1308 } while (err);
53620bba 1309
ff762d6e
FB
1310 rt->state = RTSP_STATE_IDLE;
1311 rt->seek_timestamp = 0; /* default is to start stream at position
1312 zero */
c04c3282 1313 if (ap->initial_pause) {
ff762d6e
FB
1314 /* do not start immediately */
1315 } else {
1316 if (rtsp_read_play(s) < 0) {
1317 err = AVERROR_INVALIDDATA;
1617ad97
FB
1318 goto fail;
1319 }
1320 }
1617ad97
FB
1321 return 0;
1322 fail:
8b1ab7bf 1323 rtsp_close_streams(rt);
1617ad97
FB
1324 av_freep(&content);
1325 url_close(rt->rtsp_hd);
f9337897 1326 av_freep(&rt->auth_b64);
1617ad97
FB
1327 return err;
1328}
1329
8b1ab7bf
FB
1330static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1331 uint8_t *buf, int buf_size)
1617ad97
FB
1332{
1333 RTSPState *rt = s->priv_data;
b6892136 1334 int id, len, i, ret;
1617ad97 1335 RTSPStream *rtsp_st;
1617ad97 1336
b6892136 1337#ifdef DEBUG_RTP_TCP
67c9cd69 1338 dprintf(s, "tcp_read_packet:\n");
b6892136 1339#endif
1617ad97
FB
1340 redo:
1341 for(;;) {
7e726132
RB
1342 RTSPMessageHeader reply;
1343
1344 ret = rtsp_read_reply(s, &reply, NULL, 1);
1345 if (ret == -1)
8b1ab7bf 1346 return -1;
7e726132 1347 if (ret == 1) /* received '$' */
1617ad97 1348 break;
7e726132 1349 /* XXX: parse message */
fccb1770
RB
1350 if (rt->state != RTSP_STATE_PLAYING)
1351 return 0;
1617ad97 1352 }
0e848977 1353 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1354 if (ret != 3)
8b1ab7bf 1355 return -1;
b6892136 1356 id = buf[0];
80fb8234 1357 len = AV_RB16(buf + 1);
b6892136 1358#ifdef DEBUG_RTP_TCP
67c9cd69 1359 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1360#endif
8b1ab7bf 1361 if (len > buf_size || len < 12)
1617ad97
FB
1362 goto redo;
1363 /* get the data */
0e848977 1364 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1365 if (ret != len)
8b1ab7bf 1366 return -1;
985b05d3 1367 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1368 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1369 return -1;
115329f1 1370
1617ad97 1371 /* find the matching stream */
8b1ab7bf
FB
1372 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1373 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1374 if (id >= rtsp_st->interleaved_min &&
1375 id <= rtsp_st->interleaved_max)
1617ad97
FB
1376 goto found;
1377 }
1378 goto redo;
1379 found:
8b1ab7bf
FB
1380 *prtsp_st = rtsp_st;
1381 return len;
1617ad97
FB
1382}
1383
115329f1 1384static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
8b1ab7bf 1385 uint8_t *buf, int buf_size)
1617ad97 1386{
8b1ab7bf 1387 RTSPState *rt = s->priv_data;
1617ad97
FB
1388 RTSPStream *rtsp_st;
1389 fd_set rfds;
7e726132 1390 int fd, fd_max, n, i, ret, tcp_fd;
1617ad97
FB
1391 struct timeval tv;
1392
1393 for(;;) {
b7b8fc34 1394 if (url_interrupt_cb())
a960a1e0 1395 return AVERROR(EINTR);
1617ad97 1396 FD_ZERO(&rfds);
46ff7a5f
LA
1397 if (rt->rtsp_hd) {
1398 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1399 FD_SET(tcp_fd, &rfds);
1400 } else {
1401 fd_max = 0;
1402 tcp_fd = -1;
1403 }
8b1ab7bf
FB
1404 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1405 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1406 if (rtsp_st->rtp_handle) {
2fea9650
RB
1407 /* currently, we cannot probe RTCP handle because of
1408 * blocking restrictions */
bc8763cd
RB
1409 fd = url_get_file_handle(rtsp_st->rtp_handle);
1410 if (fd > fd_max)
1411 fd_max = fd;
1412 FD_SET(fd, &rfds);
f830c9a4 1413 }
1617ad97 1414 }
1617ad97 1415 tv.tv_sec = 0;
b7b8fc34 1416 tv.tv_usec = 100 * 1000;
1617ad97
FB
1417 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1418 if (n > 0) {
8b1ab7bf
FB
1419 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1420 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1421 if (rtsp_st->rtp_handle) {
bc8763cd
RB
1422 fd = url_get_file_handle(rtsp_st->rtp_handle);
1423 if (FD_ISSET(fd, &rfds)) {
2fea9650
RB
1424 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1425 if (ret > 0) {
1426 *prtsp_st = rtsp_st;
1427 return ret;
1428 }
1617ad97
FB
1429 }
1430 }
1431 }
7e726132
RB
1432 if (FD_ISSET(tcp_fd, &rfds)) {
1433 RTSPMessageHeader reply;
1434
1435 rtsp_read_reply(s, &reply, NULL, 0);
1436 /* XXX: parse message */
fccb1770
RB
1437 if (rt->state != RTSP_STATE_PLAYING)
1438 return 0;
7e726132 1439 }
1617ad97
FB
1440 }
1441 }
1442}
1443
1444static int rtsp_read_packet(AVFormatContext *s,
1445 AVPacket *pkt)
1446{
1447 RTSPState *rt = s->priv_data;
8b1ab7bf
FB
1448 RTSPStream *rtsp_st;
1449 int ret, len;
e49906c3 1450 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
30e79845
RB
1451 RTSPMessageHeader reply1, *reply = &reply1;
1452 char cmd[1024];
8b1ab7bf 1453
572c6a38 1454 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1455 int i;
572c6a38 1456 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1457
572c6a38
RB
1458 for (i = 0; i < s->nb_streams; i++)
1459 cache[i] = s->streams[i]->discard;
1460
1461 if (!rt->need_subscription) {
1462 if (memcmp (cache, rt->real_setup_cache,
1463 sizeof(enum AVDiscard) * s->nb_streams)) {
1464 av_strlcatf(cmd, sizeof(cmd),
1465 "SET_PARAMETER %s RTSP/1.0\r\n"
1466 "Unsubscribe: %s\r\n",
1467 s->filename, rt->last_subscription);
1468 rtsp_send_cmd(s, cmd, reply, NULL);
1469 if (reply->status_code != RTSP_STATUS_OK)
1470 return AVERROR_INVALIDDATA;
1471 rt->need_subscription = 1;
1472 }
1256d16b 1473 }
1256d16b 1474
572c6a38
RB
1475 if (rt->need_subscription) {
1476 int r, rule_nr, first = 1;
1477
1478 memcpy(rt->real_setup_cache, cache,
1479 sizeof(enum AVDiscard) * s->nb_streams);
1480 rt->last_subscription[0] = 0;
1481
1482 snprintf(cmd, sizeof(cmd),
1483 "SET_PARAMETER %s RTSP/1.0\r\n"
1484 "Subscribe: ",
1485 s->filename);
1486 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1487 rule_nr = 0;
1488 for (r = 0; r < s->nb_streams; r++) {
1489 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1490 if (s->streams[r]->discard != AVDISCARD_ALL) {
1491 if (!first)
1492 av_strlcat(rt->last_subscription, ",",
1493 sizeof(rt->last_subscription));
1494 ff_rdt_subscribe_rule(
1495 rt->last_subscription,
1496 sizeof(rt->last_subscription), i, rule_nr);
1497 first = 0;
1498 }
1499 rule_nr++;
1500 }
1501 }
1502 }
1503 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1504 rtsp_send_cmd(s, cmd, reply, NULL);
1505 if (reply->status_code != RTSP_STATUS_OK)
1506 return AVERROR_INVALIDDATA;
1507 rt->need_subscription = 0;
1508
1509 if (rt->state == RTSP_STATE_PLAYING)
1510 rtsp_read_play (s);
1511 }
1256d16b
RB
1512 }
1513
8b1ab7bf 1514 /* get next frames from the same RTP packet */
0a861b6f 1515 if (rt->cur_transport_priv) {
119b4668 1516 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1517 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
4fce284c 1518 else
0a861b6f 1519 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
8b1ab7bf 1520 if (ret == 0) {
0a861b6f 1521 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1522 return 0;
1523 } else if (ret == 1) {
1524 return 0;
1525 } else {
0a861b6f 1526 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1527 }
1528 }
1617ad97 1529
8b1ab7bf
FB
1530 /* read next RTP packet */
1531 redo:
90abbdba 1532 switch(rt->lower_transport) {
1617ad97 1533 default:
90abbdba 1534 case RTSP_LOWER_TRANSPORT_TCP:
8b1ab7bf 1535 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1617ad97 1536 break;
90abbdba
RB
1537 case RTSP_LOWER_TRANSPORT_UDP:
1538 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
8b1ab7bf 1539 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
0a861b6f
RB
1540 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1541 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1617ad97
FB
1542 break;
1543 }
8b1ab7bf 1544 if (len < 0)
489b0d4d 1545 return len;
fccb1770
RB
1546 if (len == 0)
1547 return AVERROR_EOF;
119b4668 1548 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1549 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
4fce284c 1550 else
0a861b6f 1551 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
8b1ab7bf
FB
1552 if (ret < 0)
1553 goto redo;
1554 if (ret == 1) {
1555 /* more packets may follow, so we save the RTP context */
0a861b6f 1556 rt->cur_transport_priv = rtsp_st->transport_priv;
8b1ab7bf 1557 }
30e79845
RB
1558
1559 /* send dummy request to keep TCP connection alive */
1560 if ((rt->server_type == RTSP_SERVER_WMS ||
1561 rt->server_type == RTSP_SERVER_REAL) &&
1562 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1563 if (rt->server_type == RTSP_SERVER_WMS) {
1564 snprintf(cmd, sizeof(cmd) - 1,
1565 "GET_PARAMETER %s RTSP/1.0\r\n",
1566 s->filename);
1567 rtsp_send_cmd_async(s, cmd, reply, NULL);
1568 } else {
1569 rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n",
1570 reply, NULL);
1571 }
1572 }
1573
8b1ab7bf 1574 return 0;
1617ad97
FB
1575}
1576
ff762d6e 1577static int rtsp_read_play(AVFormatContext *s)
b7b8fc34 1578{
ff762d6e 1579 RTSPState *rt = s->priv_data;
a9e534d5 1580 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1581 char cmd[1024];
1582
bc874dae 1583 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
ff762d6e 1584
2e889ae4 1585 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1586 if (rt->state == RTSP_STATE_PAUSED) {
1587 snprintf(cmd, sizeof(cmd),
1588 "PLAY %s RTSP/1.0\r\n",
1589 s->filename);
1590 } else {
1591 snprintf(cmd, sizeof(cmd),
1592 "PLAY %s RTSP/1.0\r\n"
1593 "Range: npt=%0.3f-\r\n",
1594 s->filename,
1595 (double)rt->seek_timestamp / AV_TIME_BASE);
1596 }
1597 rtsp_send_cmd(s, cmd, reply, NULL);
1598 if (reply->status_code != RTSP_STATUS_OK) {
1599 return -1;
1600 }
1256d16b 1601 }
5f86057f
RB
1602 rt->state = RTSP_STATE_PLAYING;
1603 return 0;
b7b8fc34
FB
1604}
1605
ff762d6e
FB
1606/* pause the stream */
1607static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1608{
ff762d6e 1609 RTSPState *rt = s->priv_data;
a9e534d5 1610 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1611 char cmd[1024];
1612
b7b8fc34 1613 rt = s->priv_data;
115329f1 1614
ff762d6e
FB
1615 if (rt->state != RTSP_STATE_PLAYING)
1616 return 0;
2e889ae4 1617 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1618 snprintf(cmd, sizeof(cmd),
1619 "PAUSE %s RTSP/1.0\r\n",
1620 s->filename);
1621 rtsp_send_cmd(s, cmd, reply, NULL);
1622 if (reply->status_code != RTSP_STATUS_OK) {
1623 return -1;
1624 }
1256d16b 1625 }
5f86057f
RB
1626 rt->state = RTSP_STATE_PAUSED;
1627 return 0;
b7b8fc34
FB
1628}
1629
115329f1 1630static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1631 int64_t timestamp, int flags)
ff762d6e
FB
1632{
1633 RTSPState *rt = s->priv_data;
115329f1 1634
50755217 1635 rt->seek_timestamp = av_rescale_q(timestamp, s->streams[stream_index]->time_base, AV_TIME_BASE_Q);
ff762d6e
FB
1636 switch(rt->state) {
1637 default:
1638 case RTSP_STATE_IDLE:
1639 break;
1640 case RTSP_STATE_PLAYING:
ec606b36
LB
1641 if (rtsp_read_pause(s) != 0)
1642 return -1;
1643 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1644 if (rtsp_read_play(s) != 0)
1645 return -1;
1646 break;
1647 case RTSP_STATE_PAUSED:
1648 rt->state = RTSP_STATE_IDLE;
1649 break;
1650 }
1651 return 0;
1652}
1653
1617ad97
FB
1654static int rtsp_read_close(AVFormatContext *s)
1655{
1656 RTSPState *rt = s->priv_data;
a9e534d5 1657 RTSPMessageHeader reply1, *reply = &reply1;
1617ad97
FB
1658 char cmd[1024];
1659
b6892136 1660#if 0
1617ad97 1661 /* NOTE: it is valid to flush the buffer here */
90abbdba 1662 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1663 url_fclose(&rt->rtsp_gb);
1664 }
b6892136 1665#endif
115329f1 1666 snprintf(cmd, sizeof(cmd),
b6892136 1667 "TEARDOWN %s RTSP/1.0\r\n",
1617ad97
FB
1668 s->filename);
1669 rtsp_send_cmd(s, cmd, reply, NULL);
1670
8b1ab7bf 1671 rtsp_close_streams(rt);
1617ad97
FB
1672 url_close(rt->rtsp_hd);
1673 return 0;
1674}
1675
b250f9c6 1676#if CONFIG_RTSP_DEMUXER
d2a067d1 1677AVInputFormat rtsp_demuxer = {
1617ad97 1678 "rtsp",
bde15e74 1679 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1680 sizeof(RTSPState),
1681 rtsp_probe,
1682 rtsp_read_header,
1683 rtsp_read_packet,
1684 rtsp_read_close,
ff762d6e 1685 rtsp_read_seek,
bb76a117 1686 .flags = AVFMT_NOFILE,
ff762d6e
FB
1687 .read_play = rtsp_read_play,
1688 .read_pause = rtsp_read_pause,
1617ad97 1689};
96862926 1690#endif
1617ad97 1691
cb1fdc61 1692static int sdp_probe(AVProbeData *p1)
93ced3e8 1693{
0e1ceacd 1694 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1695
1696 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1697 while (p < p_end && *p != '\0') {
f7d78f36 1698 if (p + sizeof("c=IN IP4") - 1 < p_end && av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1699 return AVPROBE_SCORE_MAX / 2;
0e1ceacd
MN
1700
1701 while(p < p_end - 1 && *p != '\n') p++;
1702 if (++p >= p_end)
cb1fdc61 1703 break;
cb1fdc61
FB
1704 if (*p == '\r')
1705 p++;
1706 }
93ced3e8
FB
1707 return 0;
1708}
1709
1710#define SDP_MAX_SIZE 8192
1711
1712static int sdp_read_header(AVFormatContext *s,
1713 AVFormatParameters *ap)
1714{
8b1ab7bf 1715 RTSPState *rt = s->priv_data;
93ced3e8
FB
1716 RTSPStream *rtsp_st;
1717 int size, i, err;
1718 char *content;
1719 char url[1024];
1720
1721 /* read the whole sdp file */
1722 /* XXX: better loading */
1723 content = av_malloc(SDP_MAX_SIZE);
899681cd 1724 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1725 if (size <= 0) {
1726 av_free(content);
1727 return AVERROR_INVALIDDATA;
1728 }
1729 content[size] ='\0';
1730
1731 sdp_parse(s, content);
1732 av_free(content);
1733
1734 /* open each RTP stream */
8b1ab7bf
FB
1735 for(i=0;i<rt->nb_rtsp_streams;i++) {
1736 rtsp_st = rt->rtsp_streams[i];
115329f1 1737
d2bf42be 1738 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
115329f1 1739 inet_ntoa(rtsp_st->sdp_ip),
93ced3e8 1740 rtsp_st->sdp_port,
d2bf42be 1741 rtsp_st->sdp_port,
93ced3e8 1742 rtsp_st->sdp_ttl);
dbf30963 1743 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1744 err = AVERROR_INVALIDDATA;
1745 goto fail;
1746 }
ee0cb67f 1747 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1748 goto fail;
93ced3e8
FB
1749 }
1750 return 0;
1751 fail:
8b1ab7bf 1752 rtsp_close_streams(rt);
93ced3e8
FB
1753 return err;
1754}
1755
1756static int sdp_read_packet(AVFormatContext *s,
1757 AVPacket *pkt)
1758{
8b1ab7bf 1759 return rtsp_read_packet(s, pkt);
93ced3e8
FB
1760}
1761
1762static int sdp_read_close(AVFormatContext *s)
1763{
8b1ab7bf
FB
1764 RTSPState *rt = s->priv_data;
1765 rtsp_close_streams(rt);
93ced3e8
FB
1766 return 0;
1767}
1768
b250f9c6 1769#if CONFIG_SDP_DEMUXER
ff70e601 1770AVInputFormat sdp_demuxer = {
93ced3e8 1771 "sdp",
bde15e74 1772 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1773 sizeof(RTSPState),
1774 sdp_probe,
1775 sdp_read_header,
1776 sdp_read_packet,
1777 sdp_read_close,
1778};
ff70e601 1779#endif