Pretty embarassing bug; we shouldn't use av_strlcatf() on an uninitialized
[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
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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
c482500f 46#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 47int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 48#endif
85fb7b34 49
1ef36a70 50#define SPACE_CHARS " \t\r\n"
da1e126e
RB
51/* we use memchr() instead of strchr() here because strchr() will return
52 * the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */
53#define redir_isspace(c) memchr(SPACE_CHARS, c, 4)
1617ad97
FB
54static void skip_spaces(const char **pp)
55{
56 const char *p;
57 p = *pp;
58 while (redir_isspace(*p))
59 p++;
60 *pp = p;
61}
62
1ef36a70
RB
63static void get_word_until_chars(char *buf, int buf_size,
64 const char *sep, const char **pp)
1617ad97
FB
65{
66 const char *p;
67 char *q;
68
69 p = *pp;
70 skip_spaces(&p);
71 q = buf;
72 while (!strchr(sep, *p) && *p != '\0') {
73 if ((q - buf) < buf_size - 1)
74 *q++ = *p;
75 p++;
76 }
77 if (buf_size > 0)
78 *q = '\0';
79 *pp = p;
80}
81
1ef36a70
RB
82static void get_word_sep(char *buf, int buf_size, const char *sep,
83 const char **pp)
1617ad97 84{
1ef36a70
RB
85 if (**pp == '/') (*pp)++;
86 get_word_until_chars(buf, buf_size, sep, pp);
87}
1617ad97 88
1ef36a70
RB
89static void get_word(char *buf, int buf_size, const char **pp)
90{
91 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
92}
93
c8965800 94/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3
RB
95static int sdp_parse_rtpmap(AVFormatContext *s,
96 AVCodecContext *codec, RTSPStream *rtsp_st,
c8965800 97 int payload_type, const char *p)
93ced3e8
FB
98{
99 char buf[256];
d1ccf0e0
RD
100 int i;
101 AVCodec *c;
7b49ce2e 102 const char *c_name;
93ced3e8 103
d1ccf0e0 104 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
105 * see if we can handle this kind of payload.
106 * The space should normally not be there but some Real streams or
107 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
108 * have a trailing space. */
109 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 110 if (payload_type >= RTP_PT_PRIVATE) {
c8965800
RB
111 RTPDynamicProtocolHandler *handler;
112 for (handler = RTPFirstDynamicPayloadHandler;
113 handler; handler = handler->next) {
114 if (!strcasecmp(buf, handler->enc_name) &&
115 codec->codec_type == handler->codec_type) {
116 codec->codec_id = handler->codec_id;
117 rtsp_st->dynamic_handler = handler;
118 if (handler->open)
119 rtsp_st->dynamic_protocol_context = handler->open();
d1ccf0e0
RD
120 break;
121 }
4934884a 122 }
93ced3e8 123 } else {
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124 /* We are in a standard case
125 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 126 /* search into AVRtpPayloadTypes[] */
7ed19d7f 127 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
128 }
129
130 c = avcodec_find_decoder(codec->codec_id);
131 if (c && c->name)
7b49ce2e 132 c_name = c->name;
d1ccf0e0 133 else
c8965800 134 c_name = (char *) NULL;
d1ccf0e0
RD
135
136 if (c_name) {
137 get_word_sep(buf, sizeof(buf), "/", &p);
138 i = atoi(buf);
139 switch (codec->codec_type) {
c8965800 140 case CODEC_TYPE_AUDIO:
8f3c87f3 141 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
c8965800
RB
142 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
143 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
144 if (i > 0) {
145 codec->sample_rate = i;
146 get_word_sep(buf, sizeof(buf), "/", &p);
147 i = atoi(buf);
148 if (i > 0)
149 codec->channels = i;
150 // TODO: there is a bug here; if it is a mono stream, and
151 // less than 22000Hz, faad upconverts to stereo and twice
152 // the frequency. No problem, but the sample rate is being
153 // set here by the sdp line. Patch on its way. (rdm)
154 }
8f3c87f3 155 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
c8965800 156 codec->sample_rate);
8f3c87f3 157 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
c8965800
RB
158 codec->channels);
159 break;
160 case CODEC_TYPE_VIDEO:
8f3c87f3 161 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
c8965800
RB
162 break;
163 default:
164 break;
d1ccf0e0
RD
165 }
166 return 0;
93ced3e8 167 }
d1ccf0e0
RD
168
169 return -1;
93ced3e8
FB
170}
171
c8965800 172/* return the length and optionally the data */
93ced3e8
FB
173static int hex_to_data(uint8_t *data, const char *p)
174{
175 int c, len, v;
176
177 len = 0;
178 v = 1;
c8965800 179 for (;;) {
93ced3e8 180 skip_spaces(&p);
6a8c8b36 181 if (*p == '\0')
93ced3e8 182 break;
c8965800 183 c = toupper((unsigned char) *p++);
93ced3e8
FB
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) {
c8965800
RB
205 case CODEC_ID_MPEG4:
206 case CODEC_ID_AAC:
207 if (!strcmp(attr, "config")) {
208 /* decode the hexa encoded parameter */
209 int len = hex_to_data(NULL, value);
210 if (codec->extradata)
211 av_free(codec->extradata);
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;
219 case CODEC_ID_VORBIS:
220 ff_vorbis_parse_fmtp_config(codec, ctx, attr, value);
221 break;
222 default:
223 break;
d1ccf0e0
RD
224 }
225 return;
226}
227
644e7acb 228typedef struct {
7b49ce2e 229 const char *str;
c8965800
RB
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{
c8965800
RB
239 { "SizeLength", ATTR_NAME_TYPE_INT,
240 offsetof(RTPPayloadData, sizelength) },
241 { "IndexLength", ATTR_NAME_TYPE_INT,
242 offsetof(RTPPayloadData, indexlength) },
243 { "IndexDeltaLength", ATTR_NAME_TYPE_INT,
244 offsetof(RTPPayloadData, indexdeltalength) },
245 { "profile-level-id", ATTR_NAME_TYPE_INT,
246 offsetof(RTPPayloadData, profile_level_id) },
247 { "StreamType", ATTR_NAME_TYPE_INT,
248 offsetof(RTPPayloadData, streamtype) },
249 { "mode", ATTR_NAME_TYPE_STR,
250 offsetof(RTPPayloadData, mode) },
251 { NULL, -1, -1 },
d1ccf0e0
RD
252};
253
c8965800
RB
254/* parse the attribute line from the fmtp a line of an sdp resonse. This
255 * is broken out as a function because it is used in rtp_h264.c, which is
256 * forthcoming. */
257int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
258 char *value, int value_size)
d0deedcb
RM
259{
260 skip_spaces(p);
c8965800 261 if (**p) {
d0deedcb
RM
262 get_word_sep(attr, attr_size, "=", p);
263 if (**p == '=')
264 (*p)++;
265 get_word_sep(value, value_size, ";", p);
266 if (**p == ';')
267 (*p)++;
268 return 1;
269 }
270 return 0;
271}
272
d1ccf0e0
RD
273/* parse a SDP line and save stream attributes */
274static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
275{
276 char attr[256];
373afbaf
RB
277 /* Vorbis setup headers can be up to 12KB and are sent base64
278 * encoded, giving a 12KB * (4/3) = 16KB FMTP line. */
279 char value[16384];
d1ccf0e0 280 int i;
d1ccf0e0 281 RTSPStream *rtsp_st = st->priv_data;
01f4895c 282 AVCodecContext *codec = st->codec;
be73a544 283 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
284
285 /* loop on each attribute */
c8965800
RB
286 while (rtsp_next_attr_and_value(&p, attr, sizeof(attr),
287 value, sizeof(value))) {
288 /* grab the codec extra_data from the config parameter of the fmtp
289 * line */
e6327fba
RB
290 sdp_parse_fmtp_config(codec, rtsp_st->dynamic_protocol_context,
291 attr, value);
d1ccf0e0
RD
292 /* Looking for a known attribute */
293 for (i = 0; attr_names[i].str; ++i) {
294 if (!strcasecmp(attr, attr_names[i].str)) {
c8965800
RB
295 if (attr_names[i].type == ATTR_NAME_TYPE_INT) {
296 *(int *)((char *)rtp_payload_data +
297 attr_names[i].offset) = atoi(value);
298 } else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
299 *(char **)((char *)rtp_payload_data +
300 attr_names[i].offset) = av_strdup(value);
bb270c08 301 }
93ced3e8 302 }
93ced3e8
FB
303 }
304}
305
debe86bf 306/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
31693e00
RM
307 * and end time.
308 * Used for seeking in the rtp stream.
309 */
310static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
311{
312 char buf[256];
313
314 skip_spaces(&p);
f7d78f36 315 if (!av_stristart(p, "npt=", &p))
31693e00
RM
316 return;
317
318 *start = AV_NOPTS_VALUE;
319 *end = AV_NOPTS_VALUE;
320
321 get_word_sep(buf, sizeof(buf), "-", &p);
322 *start = parse_date(buf, 1);
323 if (*p == '-') {
324 p++;
325 get_word_sep(buf, sizeof(buf), "-", &p);
326 *end = parse_date(buf, 1);
327 }
328// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
329// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
330}
331
93ced3e8
FB
332typedef struct SDPParseState {
333 /* SDP only */
334 struct in_addr default_ip;
c8965800
RB
335 int default_ttl;
336 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
337} SDPParseState;
338
339static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
340 int letter, const char *buf)
341{
8b1ab7bf 342 RTSPState *rt = s->priv_data;
1617ad97
FB
343 char buf1[64], st_type[64];
344 const char *p;
fb65d2ca
DP
345 enum CodecType codec_type;
346 int payload_type, i;
1617ad97
FB
347 AVStream *st;
348 RTSPStream *rtsp_st;
93ced3e8
FB
349 struct in_addr sdp_ip;
350 int ttl;
351
67c9cd69 352 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
353
354 p = buf;
cb760a47
RB
355 if (s1->skip_media && letter != 'm')
356 return;
c8965800 357 switch (letter) {
93ced3e8
FB
358 case 'c':
359 get_word(buf1, sizeof(buf1), &p);
360 if (strcmp(buf1, "IN") != 0)
361 return;
362 get_word(buf1, sizeof(buf1), &p);
363 if (strcmp(buf1, "IP4") != 0)
364 return;
365 get_word_sep(buf1, sizeof(buf1), "/", &p);
366 if (inet_aton(buf1, &sdp_ip) == 0)
367 return;
368 ttl = 16;
369 if (*p == '/') {
370 p++;
371 get_word_sep(buf1, sizeof(buf1), "/", &p);
372 ttl = atoi(buf1);
373 }
374 if (s->nb_streams == 0) {
375 s1->default_ip = sdp_ip;
376 s1->default_ttl = ttl;
377 } else {
378 st = s->streams[s->nb_streams - 1];
379 rtsp_st = st->priv_data;
380 rtsp_st->sdp_ip = sdp_ip;
381 rtsp_st->sdp_ttl = ttl;
382 }
383 break;
1617ad97 384 case 's':
da61e413 385 av_metadata_set(&s->metadata, "title", p);
1617ad97
FB
386 break;
387 case 'i':
388 if (s->nb_streams == 0) {
da61e413 389 av_metadata_set(&s->metadata, "comment", p);
1617ad97
FB
390 break;
391 }
392 break;
393 case 'm':
394 /* new stream */
cb760a47 395 s1->skip_media = 0;
1617ad97
FB
396 get_word(st_type, sizeof(st_type), &p);
397 if (!strcmp(st_type, "audio")) {
398 codec_type = CODEC_TYPE_AUDIO;
399 } else if (!strcmp(st_type, "video")) {
400 codec_type = CODEC_TYPE_VIDEO;
090438cc
RB
401 } else if (!strcmp(st_type, "application")) {
402 codec_type = CODEC_TYPE_DATA;
1617ad97 403 } else {
cb760a47 404 s1->skip_media = 1;
1617ad97
FB
405 return;
406 }
1617ad97
FB
407 rtsp_st = av_mallocz(sizeof(RTSPStream));
408 if (!rtsp_st)
409 return;
8b1ab7bf
FB
410 rtsp_st->stream_index = -1;
411 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
412
413 rtsp_st->sdp_ip = s1->default_ip;
414 rtsp_st->sdp_ttl = s1->default_ttl;
415
93ced3e8
FB
416 get_word(buf1, sizeof(buf1), &p); /* port */
417 rtsp_st->sdp_port = atoi(buf1);
418
419 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 420
93ced3e8
FB
421 /* XXX: handle list of formats */
422 get_word(buf1, sizeof(buf1), &p); /* format list */
423 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 424
7ed19d7f 425 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
426 /* no corresponding stream */
427 } else {
428 st = av_new_stream(s, 0);
429 if (!st)
430 return;
431 st->priv_data = rtsp_st;
432 rtsp_st->stream_index = st->index;
01f4895c 433 st->codec->codec_type = codec_type;
d1ccf0e0 434 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 435 /* if standard payload type, we can find the codec right now */
bf6d9818 436 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
437 }
438 }
1617ad97 439 /* put a default control url */
c8965800
RB
440 av_strlcpy(rtsp_st->control_url, s->filename,
441 sizeof(rtsp_st->control_url));
1617ad97
FB
442 break;
443 case 'a':
f7d78f36 444 if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
1617ad97
FB
445 char proto[32];
446 /* get the control url */
447 st = s->streams[s->nb_streams - 1];
448 rtsp_st = st->priv_data;
115329f1 449
1617ad97 450 /* XXX: may need to add full url resolution */
c8965800
RB
451 url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
452 NULL, NULL, 0, p);
1617ad97
FB
453 if (proto[0] == '\0') {
454 /* relative control URL */
c8965800
RB
455 av_strlcat(rtsp_st->control_url, "/",
456 sizeof(rtsp_st->control_url));
457 av_strlcat(rtsp_st->control_url, p,
458 sizeof(rtsp_st->control_url));
459 } else
460 av_strlcpy(rtsp_st->control_url, p,
461 sizeof(rtsp_st->control_url));
83d14c85 462 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 463 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 464 get_word(buf1, sizeof(buf1), &p);
93ced3e8 465 payload_type = atoi(buf1);
83d14c85 466 st = s->streams[s->nb_streams - 1];
ff16f551 467 rtsp_st = st->priv_data;
8f3c87f3 468 sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p);
f7d78f36 469 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 470 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 471 get_word(buf1, sizeof(buf1), &p);
93ced3e8 472 payload_type = atoi(buf1);
c8965800
RB
473 for (i = 0; i < s->nb_streams; i++) {
474 st = s->streams[i];
93ced3e8
FB
475 rtsp_st = st->priv_data;
476 if (rtsp_st->sdp_payload_type == payload_type) {
c8965800
RB
477 if (!(rtsp_st->dynamic_handler &&
478 rtsp_st->dynamic_handler->parse_sdp_a_line &&
479 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
480 i, rtsp_st->dynamic_protocol_context, buf)))
ed787542 481 sdp_parse_fmtp(st, p);
93ced3e8
FB
482 }
483 }
c8965800 484 } else if (av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
485 // let dynamic protocol handlers have a stab at the line.
486 get_word(buf1, sizeof(buf1), &p);
487 payload_type = atoi(buf1);
c8965800
RB
488 for (i = 0; i < s->nb_streams; i++) {
489 st = s->streams[i];
d0deedcb 490 rtsp_st = st->priv_data;
c8965800
RB
491 if (rtsp_st->sdp_payload_type == payload_type &&
492 rtsp_st->dynamic_handler &&
493 rtsp_st->dynamic_handler->parse_sdp_a_line)
494 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
495 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 496 }
c8965800 497 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
498 int64_t start, end;
499
500 // this is so that seeking on a streamed file can work.
501 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
502 s->start_time = start;
503 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
504 s->duration = (end == AV_NOPTS_VALUE) ?
505 AV_NOPTS_VALUE : end - start;
119b4668
RB
506 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
507 if (atoi(p) == 1)
508 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
509 } else {
510 if (rt->server_type == RTSP_SERVER_WMS)
511 ff_wms_parse_sdp_a_line(s, p);
512 if (s->nb_streams > 0) {
c4a3d032
RB
513 if (rt->server_type == RTSP_SERVER_REAL)
514 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
515
516 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
517 if (rtsp_st->dynamic_handler &&
518 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
519 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
520 s->nb_streams - 1,
c4a3d032 521 rtsp_st->dynamic_protocol_context, buf);
1a30d541 522 }
1617ad97
FB
523 }
524 break;
525 }
526}
527
5c91a675 528static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
529{
530 const char *p;
531 int letter;
9211bcdd
RB
532 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
533 * contain long SDP lines containing complete ASF Headers (several
534 * kB) or arrays of MDPR (RM stream descriptor) headers plus
535 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
536 * buffer is large.
537 *
538 * The Vorbis FMTP line can be up to 16KB - see sdp_parse_fmtp. */
539 char buf[16384], *q;
93ced3e8 540 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 541
93ced3e8 542 memset(s1, 0, sizeof(SDPParseState));
1617ad97 543 p = content;
c8965800 544 for (;;) {
1617ad97
FB
545 skip_spaces(&p);
546 letter = *p;
547 if (letter == '\0')
548 break;
549 p++;
550 if (*p != '=')
551 goto next_line;
552 p++;
553 /* get the content */
554 q = buf;
b6892136 555 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
556 if ((q - buf) < sizeof(buf) - 1)
557 *q++ = *p;
558 p++;
559 }
560 *q = '\0';
93ced3e8 561 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
562 next_line:
563 while (*p != '\n' && *p != '\0')
564 p++;
565 if (*p == '\n')
566 p++;
567 }
568 return 0;
569}
570
1ced9da3
LA
571/* close and free RTSP streams */
572static void rtsp_close_streams(RTSPState *rt)
573{
574 int i;
575 RTSPStream *rtsp_st;
576
c8965800 577 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
578 rtsp_st = rt->rtsp_streams[i];
579 if (rtsp_st) {
580 if (rtsp_st->transport_priv) {
581 if (rt->transport == RTSP_TRANSPORT_RDT)
582 ff_rdt_parse_close(rtsp_st->transport_priv);
583 else
584 rtp_parse_close(rtsp_st->transport_priv);
585 }
586 if (rtsp_st->rtp_handle)
587 url_close(rtsp_st->rtp_handle);
588 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
589 rtsp_st->dynamic_handler->close(
590 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
591 }
592 }
593 av_free(rt->rtsp_streams);
594 if (rt->asf_ctx) {
595 av_close_input_stream (rt->asf_ctx);
596 rt->asf_ctx = NULL;
597 }
598 av_freep(&rt->auth_b64);
599}
600
c8965800 601static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
602{
603 RTSPState *rt = s->priv_data;
604 AVStream *st = NULL;
605
606 /* open the RTP context */
607 if (rtsp_st->stream_index >= 0)
608 st = s->streams[rtsp_st->stream_index];
609 if (!st)
610 s->ctx_flags |= AVFMTCTX_NOHEADER;
611
612 if (rt->transport == RTSP_TRANSPORT_RDT)
613 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
614 rtsp_st->dynamic_protocol_context,
615 rtsp_st->dynamic_handler);
616 else
617 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
618 rtsp_st->sdp_payload_type,
619 &rtsp_st->rtp_payload_data);
620
621 if (!rtsp_st->transport_priv) {
622 return AVERROR(ENOMEM);
623 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
c8965800 624 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
625 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
626 rtsp_st->dynamic_protocol_context,
627 rtsp_st->dynamic_handler);
628 }
629 }
630
631 return 0;
632}
633
103dfbe2 634#if CONFIG_RTSP_DEMUXER
1ced9da3
LA
635static int rtsp_probe(AVProbeData *p)
636{
637 if (av_strstart(p->filename, "rtsp:", NULL))
638 return AVPROBE_SCORE_MAX;
639 return 0;
640}
641
1617ad97
FB
642static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
643{
644 const char *p;
645 int v;
646
647 p = *pp;
648 skip_spaces(&p);
649 v = strtol(p, (char **)&p, 10);
650 if (*p == '-') {
651 p++;
652 *min_ptr = v;
653 v = strtol(p, (char **)&p, 10);
654 *max_ptr = v;
655 } else {
656 *min_ptr = v;
657 *max_ptr = v;
658 }
659 *pp = p;
660}
661
662/* XXX: only one transport specification is parsed */
a9e534d5 663static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
664{
665 char transport_protocol[16];
666 char profile[16];
667 char lower_transport[16];
668 char parameter[16];
669 RTSPTransportField *th;
670 char buf[256];
115329f1 671
1617ad97 672 reply->nb_transports = 0;
115329f1 673
c8965800 674 for (;;) {
1617ad97
FB
675 skip_spaces(&p);
676 if (*p == '\0')
677 break;
678
679 th = &reply->transports[reply->nb_transports];
680
115329f1 681 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 682 "/", &p);
e1502118 683 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
684 get_word_sep(profile, sizeof(profile), "/;,", &p);
685 lower_transport[0] = '\0';
686 /* rtp/avp/<protocol> */
687 if (*p == '/') {
7ecc634e
LB
688 get_word_sep(lower_transport, sizeof(lower_transport),
689 ";,", &p);
119b4668
RB
690 }
691 th->transport = RTSP_TRANSPORT_RTP;
692 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
693 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 694 /* x-pn-tng/<protocol> */
e1502118
LB
695 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
696 profile[0] = '\0';
119b4668 697 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 698 }
b6892136 699 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 700 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 701 else
90abbdba 702 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 703
1617ad97
FB
704 if (*p == ';')
705 p++;
706 /* get each parameter */
707 while (*p != '\0' && *p != ',') {
708 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
709 if (!strcmp(parameter, "port")) {
710 if (*p == '=') {
711 p++;
712 rtsp_parse_range(&th->port_min, &th->port_max, &p);
713 }
714 } else if (!strcmp(parameter, "client_port")) {
715 if (*p == '=') {
716 p++;
115329f1 717 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
718 &th->client_port_max, &p);
719 }
720 } else if (!strcmp(parameter, "server_port")) {
721 if (*p == '=') {
722 p++;
115329f1 723 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
724 &th->server_port_max, &p);
725 }
726 } else if (!strcmp(parameter, "interleaved")) {
727 if (*p == '=') {
728 p++;
115329f1 729 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
730 &th->interleaved_max, &p);
731 }
732 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
733 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
734 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
735 } else if (!strcmp(parameter, "ttl")) {
736 if (*p == '=') {
737 p++;
738 th->ttl = strtol(p, (char **)&p, 10);
739 }
740 } else if (!strcmp(parameter, "destination")) {
741 struct in_addr ipaddr;
742
743 if (*p == '=') {
744 p++;
745 get_word_sep(buf, sizeof(buf), ";,", &p);
115329f1 746 if (inet_aton(buf, &ipaddr))
1617ad97
FB
747 th->destination = ntohl(ipaddr.s_addr);
748 }
749 }
750 while (*p != ';' && *p != '\0' && *p != ',')
751 p++;
752 if (*p == ';')
753 p++;
754 }
755 if (*p == ',')
756 p++;
757
758 reply->nb_transports++;
759 }
760}
761
a9e534d5 762void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
763{
764 const char *p;
765
766 /* NOTE: we do case independent match for broken servers */
767 p = buf;
f7d78f36 768 if (av_stristart(p, "Session:", &p)) {
30e79845 769 int t;
1617ad97 770 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
771 if (av_stristart(p, ";timeout=", &p) &&
772 (t = strtol(p, NULL, 10)) > 0) {
773 reply->timeout = t;
774 }
f7d78f36 775 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 776 reply->content_length = strtol(p, NULL, 10);
f7d78f36 777 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 778 rtsp_parse_transport(reply, p);
f7d78f36 779 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 780 reply->seq = strtol(p, NULL, 10);
f7d78f36 781 } else if (av_stristart(p, "Range:", &p)) {
31693e00 782 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
783 } else if (av_stristart(p, "RealChallenge1:", &p)) {
784 skip_spaces(&p);
785 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
786 } else if (av_stristart(p, "Server:", &p)) {
787 skip_spaces(&p);
788 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
789 } else if (av_stristart(p, "Notice:", &p) ||
790 av_stristart(p, "X-Notice:", &p)) {
791 reply->notice = strtol(p, NULL, 10);
d243ba30
LB
792 } else if (av_stristart(p, "Location:", &p)) {
793 skip_spaces(&p);
794 av_strlcpy(reply->location, p , sizeof(reply->location));
1617ad97
FB
795 }
796}
797
b7b8fc34
FB
798/* skip a RTP/TCP interleaved packet */
799static void rtsp_skip_packet(AVFormatContext *s)
800{
801 RTSPState *rt = s->priv_data;
802 int ret, len, len1;
803 uint8_t buf[1024];
804
0e848977 805 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
806 if (ret != 3)
807 return;
80fb8234 808 len = AV_RB16(buf + 1);
67c9cd69
BC
809
810 dprintf(s, "skipping RTP packet len=%d\n", len);
811
b7b8fc34
FB
812 /* skip payload */
813 while (len > 0) {
814 len1 = len;
815 if (len1 > sizeof(buf))
816 len1 = sizeof(buf);
0e848977 817 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
818 if (ret != len1)
819 return;
820 len -= len1;
821 }
822}
1617ad97 823
7e726132
RB
824/**
825 * Read a RTSP message from the server, or prepare to read data
826 * packets if we're reading data interleaved over the TCP/RTSP
827 * connection as well.
828 *
829 * @param s RTSP demuxer context
830 * @param reply pointer where the RTSP message header will be stored
831 * @param content_ptr pointer where the RTSP message body, if any, will
702d0a9e 832 * be stored (length is in reply)
7e726132
RB
833 * @param return_on_interleaved_data whether the function may return if we
834 * encounter a data marker ('$'), which precedes data
835 * packets over interleaved TCP/RTSP connections. If this
836 * is set, this function will return 1 after encountering
837 * a '$'. If it is not set, the function will skip any
838 * data packets (if they are encountered), until a reply
839 * has been fully parsed. If no more data is available
840 * without parsing a reply, it will return an error.
841 *
842 * @returns 1 if a data packets is ready to be received, -1 on error,
843 * and 0 on success.
844 */
c8965800
RB
845static int rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
846 unsigned char **content_ptr,
847 int return_on_interleaved_data)
1617ad97
FB
848{
849 RTSPState *rt = s->priv_data;
850 char buf[4096], buf1[1024], *q;
851 unsigned char ch;
852 const char *p;
7e726132 853 int ret, content_length, line_count = 0;
1617ad97
FB
854 unsigned char *content = NULL;
855
d541a7d2 856 memset(reply, 0, sizeof(*reply));
1617ad97 857
1617ad97 858 /* parse reply (XXX: use buffers) */
1617ad97 859 rt->last_reply[0] = '\0';
c8965800 860 for (;;) {
1617ad97 861 q = buf;
c8965800 862 for (;;) {
0e848977 863 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 864#ifdef DEBUG_RTP_TCP
67c9cd69 865 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
866#endif
867 if (ret != 1)
868 return -1;
1617ad97
FB
869 if (ch == '\n')
870 break;
b7b8fc34
FB
871 if (ch == '$') {
872 /* XXX: only parse it if first char on line ? */
7e726132
RB
873 if (return_on_interleaved_data) {
874 return 1;
875 } else
b7b8fc34
FB
876 rtsp_skip_packet(s);
877 } else if (ch != '\r') {
1617ad97
FB
878 if ((q - buf) < sizeof(buf) - 1)
879 *q++ = ch;
880 }
881 }
882 *q = '\0';
67c9cd69
BC
883
884 dprintf(s, "line='%s'\n", buf);
885
1617ad97
FB
886 /* test if last line */
887 if (buf[0] == '\0')
888 break;
889 p = buf;
890 if (line_count == 0) {
891 /* get reply code */
892 get_word(buf1, sizeof(buf1), &p);
893 get_word(buf1, sizeof(buf1), &p);
894 reply->status_code = atoi(buf1);
895 } else {
896 rtsp_parse_line(reply, p);
75e61b0e
MR
897 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
898 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
899 }
900 line_count++;
901 }
115329f1 902
1617ad97 903 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 904 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 905
1617ad97
FB
906 content_length = reply->content_length;
907 if (content_length > 0) {
908 /* leave some room for a trailing '\0' (useful for simple parsing) */
909 content = av_malloc(content_length + 1);
0e848977 910 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
911 content[content_length] = '\0';
912 }
913 if (content_ptr)
914 *content_ptr = content;
e2e2e7dd
AB
915 else
916 av_free(content);
7e726132 917
fccb1770
RB
918 /* EOS */
919 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
920 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 921 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 922 rt->state = RTSP_STATE_IDLE;
c8965800 923 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 924 return AVERROR(EIO); /* data or server error */
c8965800 925 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
926 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
927 return AVERROR(EPERM);
928
7e726132 929 return 0;
1617ad97
FB
930}
931
c8965800
RB
932static void rtsp_send_cmd_async(AVFormatContext *s,
933 const char *cmd, RTSPMessageHeader *reply,
934 unsigned char **content_ptr)
29b9f58b
RB
935{
936 RTSPState *rt = s->priv_data;
937 char buf[4096], buf1[1024];
938
939 rt->seq++;
940 av_strlcpy(buf, cmd, sizeof(buf));
941 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
942 av_strlcat(buf, buf1, sizeof(buf));
943 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
944 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
945 av_strlcat(buf, buf1, sizeof(buf));
946 }
f9337897
RB
947 if (rt->auth_b64)
948 av_strlcatf(buf, sizeof(buf),
ba93ea6d
RB
949 "Authorization: Basic %s\r\n",
950 rt->auth_b64);
29b9f58b 951 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69
BC
952
953 dprintf(s, "Sending:\n%s--\n", buf);
954
29b9f58b 955 url_write(rt->rtsp_hd, buf, strlen(buf));
30e79845
RB
956 rt->last_cmd_time = av_gettime();
957}
958
c8965800
RB
959static void rtsp_send_cmd(AVFormatContext *s,
960 const char *cmd, RTSPMessageHeader *reply,
961 unsigned char **content_ptr)
30e79845
RB
962{
963 rtsp_send_cmd_async(s, cmd, reply, content_ptr);
29b9f58b 964
7e726132 965 rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
966}
967
53620bba
RB
968/**
969 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
970 */
c8965800
RB
971static int make_setup_request(AVFormatContext *s, const char *host, int port,
972 int lower_transport, const char *real_challenge)
1617ad97
FB
973{
974 RTSPState *rt = s->priv_data;
f830c9a4 975 int rtx, j, i, err, interleave = 0;
1617ad97 976 RTSPStream *rtsp_st;
a9e534d5 977 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 978 char cmd[2048];
e9dea59f
RB
979 const char *trans_pref;
980
119b4668 981 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
982 trans_pref = "x-pn-tng";
983 else
984 trans_pref = "RTP/AVP";
115329f1 985
30e79845
RB
986 /* default timeout: 1 minute */
987 rt->timeout = 60;
988
1617ad97
FB
989 /* for each stream, make the setup request */
990 /* XXX: we assume the same server is used for the control of each
c8965800 991 * RTSP stream */
d1ccf0e0 992
c8965800 993 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
994 char transport[2048];
995
f830c9a4
RB
996 /**
997 * WMS serves all UDP data over a single connection, the RTX, which
998 * isn't necessarily the first in the SDP but has to be the first
999 * to be set up, else the second/third SETUP will fail with a 461.
1000 */
1001 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1002 rt->server_type == RTSP_SERVER_WMS) {
1003 if (i == 0) {
1004 /* rtx first */
1005 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1006 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1007 if (len >= 4 &&
c8965800
RB
1008 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1009 "/rtx"))
f830c9a4
RB
1010 break;
1011 }
1012 if (rtx == rt->nb_rtsp_streams)
1013 return -1; /* no RTX found */
1014 rtsp_st = rt->rtsp_streams[rtx];
1015 } else
1016 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1017 } else
2fea9650 1018 rtsp_st = rt->rtsp_streams[i];
1617ad97 1019
1617ad97 1020 /* RTP/UDP */
90abbdba 1021 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1022 char buf[256];
85fb7b34 1023
f830c9a4
RB
1024 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1025 port = reply->transports[0].client_port_min;
1026 goto have_port;
1027 }
1028
85fb7b34 1029 /* first try in specified port range */
d1ccf0e0 1030 if (RTSP_RTP_PORT_MIN != 0) {
c8965800
RB
1031 while (j <= RTSP_RTP_PORT_MAX) {
1032 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d",
1033 host, j);
1034 /* we will use two ports per rtp stream (rtp and rtcp) */
1035 j += 2;
1036 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1037 goto rtp_opened;
1038 }
1617ad97 1039 }
85fb7b34 1040
c8965800
RB
1041#if 0
1042 /* then try on any port */
1043 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1044 err = AVERROR_INVALIDDATA;
1045 goto fail;
1046 }
1047#endif
85fb7b34
FB
1048
1049 rtp_opened:
8b1ab7bf 1050 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1051 have_port:
0ad306bc 1052 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1053 "%s/UDP;", trans_pref);
1054 if (rt->server_type != RTSP_SERVER_REAL)
1055 av_strlcat(transport, "unicast;", sizeof(transport));
1056 av_strlcatf(transport, sizeof(transport),
1057 "client_port=%d", port);
f830c9a4
RB
1058 if (rt->transport == RTSP_TRANSPORT_RTP &&
1059 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1060 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1061 }
1062
1063 /* RTP/TCP */
90abbdba 1064 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1065 /** For WMS streams, the application streams are only used for
1066 * UDP. When trying to set it up for TCP streams, the server
1067 * will return an error. Therefore, we skip those streams. */
1068 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800
RB
1069 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1070 CODEC_TYPE_DATA)
090438cc 1071 continue;
0ad306bc 1072 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1073 "%s/TCP;", trans_pref);
1074 if (rt->server_type == RTSP_SERVER_WMS)
1075 av_strlcat(transport, "unicast;", sizeof(transport));
1076 av_strlcatf(transport, sizeof(transport),
1077 "interleaved=%d-%d",
1078 interleave, interleave + 1);
1079 interleave += 2;
1617ad97
FB
1080 }
1081
90abbdba 1082 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1083 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1084 "%s/UDP;multicast", trans_pref);
1617ad97 1085 }
d1c6e47c
RB
1086 if (rt->server_type == RTSP_SERVER_REAL ||
1087 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1088 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1089 snprintf(cmd, sizeof(cmd),
b6892136
FB
1090 "SETUP %s RTSP/1.0\r\n"
1091 "Transport: %s\r\n",
1617ad97 1092 rtsp_st->control_url, transport);
2e889ae4 1093 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1094 char real_res[41], real_csum[9];
1095 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1096 real_challenge);
1097 av_strlcatf(cmd, sizeof(cmd),
1098 "If-Match: %s\r\n"
1099 "RealChallenge2: %s, sd=%s\r\n",
1100 rt->session_id, real_res, real_csum);
1101 }
1617ad97 1102 rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1103 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1104 err = 1;
1105 goto fail;
7e6ca34f
RB
1106 } else if (reply->status_code != RTSP_STATUS_OK ||
1107 reply->nb_transports != 1) {
1617ad97
FB
1108 err = AVERROR_INVALIDDATA;
1109 goto fail;
1110 }
1111
1112 /* XXX: same protocol for all streams is required */
1113 if (i > 0) {
119b4668
RB
1114 if (reply->transports[0].lower_transport != rt->lower_transport ||
1115 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1116 err = AVERROR_INVALIDDATA;
1117 goto fail;
1118 }
1119 } else {
90abbdba 1120 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1121 rt->transport = reply->transports[0].transport;
1617ad97
FB
1122 }
1123
1124 /* close RTP connection if not choosen */
90abbdba
RB
1125 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1126 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1127 url_close(rtsp_st->rtp_handle);
1128 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1129 }
1130
90abbdba
RB
1131 switch(reply->transports[0].lower_transport) {
1132 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1133 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1134 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1135 break;
115329f1 1136
c8965800
RB
1137 case RTSP_LOWER_TRANSPORT_UDP: {
1138 char url[1024];
1139
1140 /* XXX: also use address if specified */
1141 snprintf(url, sizeof(url), "rtp://%s:%d",
1142 host, reply->transports[0].server_port_min);
1143 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1144 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1145 err = AVERROR_INVALIDDATA;
1146 goto fail;
1617ad97
FB
1147 }
1148 break;
c8965800
RB
1149 }
1150 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1151 char url[1024];
1152 struct in_addr in;
1153 int port, ttl;
1154
1155 if (reply->transports[0].destination) {
1156 in.s_addr = htonl(reply->transports[0].destination);
1157 port = reply->transports[0].port_min;
1158 ttl = reply->transports[0].ttl;
1159 } else {
1160 in = rtsp_st->sdp_ip;
1161 port = rtsp_st->sdp_port;
1162 ttl = rtsp_st->sdp_ttl;
1163 }
1164 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
1165 inet_ntoa(in), port, ttl);
1166 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1167 err = AVERROR_INVALIDDATA;
1168 goto fail;
1617ad97
FB
1169 }
1170 break;
1171 }
c8965800 1172 }
d1ccf0e0 1173
ee0cb67f 1174 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1175 goto fail;
1617ad97
FB
1176 }
1177
30e79845
RB
1178 if (reply->timeout > 0)
1179 rt->timeout = reply->timeout;
1180
2e889ae4 1181 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1182 rt->need_subscription = 1;
1183
53620bba
RB
1184 return 0;
1185
1186fail:
c8965800 1187 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1188 if (rt->rtsp_streams[i]->rtp_handle) {
1189 url_close(rt->rtsp_streams[i]->rtp_handle);
1190 rt->rtsp_streams[i]->rtp_handle = NULL;
1191 }
1192 }
53620bba
RB
1193 return err;
1194}
1195
1ced9da3
LA
1196static int rtsp_read_play(AVFormatContext *s)
1197{
1198 RTSPState *rt = s->priv_data;
1199 RTSPMessageHeader reply1, *reply = &reply1;
1200 char cmd[1024];
1201
1202 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
1203
1204 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1205 if (rt->state == RTSP_STATE_PAUSED) {
1206 snprintf(cmd, sizeof(cmd),
1207 "PLAY %s RTSP/1.0\r\n",
1208 s->filename);
1209 } else {
1210 snprintf(cmd, sizeof(cmd),
1211 "PLAY %s RTSP/1.0\r\n"
1212 "Range: npt=%0.3f-\r\n",
1213 s->filename,
1214 (double)rt->seek_timestamp / AV_TIME_BASE);
1215 }
1216 rtsp_send_cmd(s, cmd, reply, NULL);
1217 if (reply->status_code != RTSP_STATUS_OK) {
1218 return -1;
1219 }
1220 }
1221 rt->state = RTSP_STATE_PLAYING;
1222 return 0;
1223}
1224
53620bba
RB
1225static int rtsp_read_header(AVFormatContext *s,
1226 AVFormatParameters *ap)
1227{
1228 RTSPState *rt = s->priv_data;
921da217
LB
1229 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1230 char *option_list, *option, *filename;
53620bba
RB
1231 URLContext *rtsp_hd;
1232 int port, ret, err;
a9e534d5 1233 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1234 unsigned char *content = NULL;
90abbdba 1235 int lower_transport_mask = 0;
1cf151e9 1236 char real_challenge[64];
c8965800 1237redirect:
53620bba 1238 /* extract hostname and port */
f9337897 1239 url_split(NULL, 0, auth, sizeof(auth),
53620bba 1240 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897
RB
1241 if (*auth) {
1242 int auth_len = strlen(auth), b64_len = ((auth_len + 2) / 3) * 4 + 1;
1243
1244 if (!(rt->auth_b64 = av_malloc(b64_len)))
1245 return AVERROR(ENOMEM);
1246 if (!av_base64_encode(rt->auth_b64, b64_len, auth, auth_len)) {
1247 err = AVERROR(EINVAL);
1248 goto fail;
1249 }
1250 }
53620bba
RB
1251 if (port < 0)
1252 port = RTSP_DEFAULT_PORT;
1253
1254 /* search for options */
1255 option_list = strchr(path, '?');
1256 if (option_list) {
921da217 1257 filename = strchr(s->filename, '?');
c8965800 1258 while (option_list) {
53620bba 1259 /* move the option pointer */
921da217 1260 option = ++option_list;
53620bba
RB
1261 option_list = strchr(option_list, '&');
1262 if (option_list)
921da217
LB
1263 *option_list = 0;
1264
53620bba 1265 /* handle the options */
c8965800 1266 if (!strcmp(option, "udp")) {
90abbdba 1267 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1268 } else if (!strcmp(option, "multicast")) {
90abbdba 1269 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1270 } else if (!strcmp(option, "tcp")) {
90abbdba 1271 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
c8965800 1272 } else {
921da217
LB
1273 strcpy(++filename, option);
1274 filename += strlen(option);
1275 if (option_list) *filename = '&';
1276 }
53620bba 1277 }
921da217 1278 *filename = 0;
53620bba
RB
1279 }
1280
90abbdba 1281 if (!lower_transport_mask)
2a1d51c5 1282 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba
RB
1283
1284 /* open the tcp connexion */
1285 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
f9337897
RB
1286 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) {
1287 err = AVERROR(EIO);
1288 goto fail;
1289 }
53620bba
RB
1290 rt->rtsp_hd = rtsp_hd;
1291 rt->seq = 0;
1292
c8965800
RB
1293 /* request options supported by the server; this also detects server
1294 * type */
1cf151e9
RB
1295 for (rt->server_type = RTSP_SERVER_RTP;;) {
1296 snprintf(cmd, sizeof(cmd),
1297 "OPTIONS %s RTSP/1.0\r\n", s->filename);
2e889ae4 1298 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1299 av_strlcat(cmd,
1300 /**
1301 * The following entries are required for proper
1302 * streaming from a Realmedia server. They are
1303 * interdependent in some way although we currently
1304 * don't quite understand how. Values were copied
1305 * from mplayer SVN r23589.
1306 * @param CompanyID is a 16-byte ID in base64
1307 * @param ClientChallenge is a 16-byte ID in hex
1308 */
1309 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1310 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1311 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1312 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1313 sizeof(cmd));
1314 rtsp_send_cmd(s, cmd, reply, NULL);
1315 if (reply->status_code != RTSP_STATUS_OK) {
1316 err = AVERROR_INVALIDDATA;
1317 goto fail;
1318 }
1319
1320 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1321 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1322 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1323 continue;
7a86bafa
RB
1324 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1325 rt->server_type = RTSP_SERVER_WMS;
c8965800 1326 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1327 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1328 break;
1329 }
1330
53620bba
RB
1331 /* describe the stream */
1332 snprintf(cmd, sizeof(cmd),
1333 "DESCRIBE %s RTSP/1.0\r\n"
1334 "Accept: application/sdp\r\n",
1335 s->filename);
2e889ae4 1336 if (rt->server_type == RTSP_SERVER_REAL) {
897ade1b
RB
1337 /**
1338 * The Require: attribute is needed for proper streaming from
1339 * Realmedia servers.
1340 */
1341 av_strlcat(cmd,
1342 "Require: com.real.retain-entity-for-setup\r\n",
1343 sizeof(cmd));
1344 }
53620bba
RB
1345 rtsp_send_cmd(s, cmd, reply, &content);
1346 if (!content) {
1347 err = AVERROR_INVALIDDATA;
1348 goto fail;
1349 }
1350 if (reply->status_code != RTSP_STATUS_OK) {
1351 err = AVERROR_INVALIDDATA;
1352 goto fail;
1353 }
1354
1355 /* now we got the SDP description, we parse it */
1356 ret = sdp_parse(s, (const char *)content);
1357 av_freep(&content);
1358 if (ret < 0) {
1359 err = AVERROR_INVALIDDATA;
1360 goto fail;
1361 }
1362
8a8754d8 1363 do {
c8965800
RB
1364 int lower_transport = ff_log2_tab[lower_transport_mask &
1365 ~(lower_transport_mask - 1)];
8a8754d8 1366
90abbdba 1367 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1368 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1369 real_challenge : NULL);
8a8754d8 1370 if (err < 0)
7e6ca34f 1371 goto fail;
90abbdba
RB
1372 lower_transport_mask &= ~(1 << lower_transport);
1373 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1374 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1375 goto fail;
1376 }
1377 } while (err);
53620bba 1378
ff762d6e 1379 rt->state = RTSP_STATE_IDLE;
c8965800 1380 rt->seek_timestamp = 0; /* default is to start stream at position zero */
c04c3282 1381 if (ap->initial_pause) {
ff762d6e
FB
1382 /* do not start immediately */
1383 } else {
1384 if (rtsp_read_play(s) < 0) {
1385 err = AVERROR_INVALIDDATA;
1617ad97
FB
1386 goto fail;
1387 }
1388 }
1617ad97
FB
1389 return 0;
1390 fail:
8b1ab7bf 1391 rtsp_close_streams(rt);
1617ad97
FB
1392 av_freep(&content);
1393 url_close(rt->rtsp_hd);
d243ba30
LB
1394 if (reply->status_code >=300 && reply->status_code < 400) {
1395 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1396 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1397 reply->status_code,
1398 s->filename);
1399 goto redirect;
1400 }
1617ad97
FB
1401 return err;
1402}
1403
0e59034e
RB
1404static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1405 uint8_t *buf, int buf_size)
1406{
1407 RTSPState *rt = s->priv_data;
1408 RTSPStream *rtsp_st;
1409 fd_set rfds;
1410 int fd, fd_max, n, i, ret, tcp_fd;
1411 struct timeval tv;
1412
c8965800 1413 for (;;) {
0e59034e
RB
1414 if (url_interrupt_cb())
1415 return AVERROR(EINTR);
1416 FD_ZERO(&rfds);
1417 if (rt->rtsp_hd) {
1418 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1419 FD_SET(tcp_fd, &rfds);
1420 } else {
1421 fd_max = 0;
1422 tcp_fd = -1;
1423 }
c8965800 1424 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1425 rtsp_st = rt->rtsp_streams[i];
1426 if (rtsp_st->rtp_handle) {
1427 /* currently, we cannot probe RTCP handle because of
1428 * blocking restrictions */
1429 fd = url_get_file_handle(rtsp_st->rtp_handle);
1430 if (fd > fd_max)
1431 fd_max = fd;
1432 FD_SET(fd, &rfds);
1433 }
1434 }
1435 tv.tv_sec = 0;
1436 tv.tv_usec = 100 * 1000;
1437 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1438 if (n > 0) {
c8965800 1439 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1440 rtsp_st = rt->rtsp_streams[i];
1441 if (rtsp_st->rtp_handle) {
1442 fd = url_get_file_handle(rtsp_st->rtp_handle);
1443 if (FD_ISSET(fd, &rfds)) {
1444 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1445 if (ret > 0) {
1446 *prtsp_st = rtsp_st;
1447 return ret;
1448 }
1449 }
1450 }
1451 }
1452#if CONFIG_RTSP_DEMUXER
1453 if (FD_ISSET(tcp_fd, &rfds)) {
1454 RTSPMessageHeader reply;
1455
1456 rtsp_read_reply(s, &reply, NULL, 0);
1457 /* XXX: parse message */
1458 if (rt->state != RTSP_STATE_PLAYING)
1459 return 0;
1460 }
1461#endif
1462 }
1463 }
1464}
1465
8b1ab7bf
FB
1466static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1467 uint8_t *buf, int buf_size)
1617ad97
FB
1468{
1469 RTSPState *rt = s->priv_data;
b6892136 1470 int id, len, i, ret;
1617ad97 1471 RTSPStream *rtsp_st;
1617ad97 1472
b6892136 1473#ifdef DEBUG_RTP_TCP
67c9cd69 1474 dprintf(s, "tcp_read_packet:\n");
b6892136 1475#endif
c8965800
RB
1476redo:
1477 for (;;) {
7e726132
RB
1478 RTSPMessageHeader reply;
1479
1480 ret = rtsp_read_reply(s, &reply, NULL, 1);
1481 if (ret == -1)
8b1ab7bf 1482 return -1;
7e726132 1483 if (ret == 1) /* received '$' */
1617ad97 1484 break;
7e726132 1485 /* XXX: parse message */
fccb1770
RB
1486 if (rt->state != RTSP_STATE_PLAYING)
1487 return 0;
1617ad97 1488 }
0e848977 1489 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1490 if (ret != 3)
8b1ab7bf 1491 return -1;
c8965800 1492 id = buf[0];
80fb8234 1493 len = AV_RB16(buf + 1);
b6892136 1494#ifdef DEBUG_RTP_TCP
67c9cd69 1495 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1496#endif
8b1ab7bf 1497 if (len > buf_size || len < 12)
1617ad97
FB
1498 goto redo;
1499 /* get the data */
0e848977 1500 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1501 if (ret != len)
8b1ab7bf 1502 return -1;
985b05d3 1503 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1504 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1505 return -1;
115329f1 1506
1617ad97 1507 /* find the matching stream */
c8965800 1508 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1509 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1510 if (id >= rtsp_st->interleaved_min &&
1511 id <= rtsp_st->interleaved_max)
1617ad97
FB
1512 goto found;
1513 }
1514 goto redo;
c8965800 1515found:
8b1ab7bf
FB
1516 *prtsp_st = rtsp_st;
1517 return len;
1617ad97
FB
1518}
1519
0e59034e
RB
1520static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1521{
1522 RTSPState *rt = s->priv_data;
1523 int ret, len;
1524 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1525 RTSPStream *rtsp_st;
1526
1527 /* get next frames from the same RTP packet */
1528 if (rt->cur_transport_priv) {
c8965800 1529 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1530 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1531 } else
0e59034e
RB
1532 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1533 if (ret == 0) {
1534 rt->cur_transport_priv = NULL;
1535 return 0;
1536 } else if (ret == 1) {
1537 return 0;
c8965800 1538 } else
0e59034e 1539 rt->cur_transport_priv = NULL;
0e59034e
RB
1540 }
1541
1542 /* read next RTP packet */
1543 redo:
1544 switch(rt->lower_transport) {
1545 default:
1546#if CONFIG_RTSP_DEMUXER
1547 case RTSP_LOWER_TRANSPORT_TCP:
1548 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1549 break;
1550#endif
1551 case RTSP_LOWER_TRANSPORT_UDP:
1552 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1553 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1554 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1555 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1556 break;
1557 }
1558 if (len < 0)
1559 return len;
1560 if (len == 0)
1561 return AVERROR_EOF;
c8965800 1562 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1563 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
c8965800 1564 } else
0e59034e
RB
1565 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
1566 if (ret < 0)
1567 goto redo;
c8965800 1568 if (ret == 1)
0e59034e
RB
1569 /* more packets may follow, so we save the RTP context */
1570 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1571
1572 return ret;
1573}
1574
c8965800 1575static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1576{
1577 RTSPState *rt = s->priv_data;
98713182 1578 int ret;
30e79845
RB
1579 RTSPMessageHeader reply1, *reply = &reply1;
1580 char cmd[1024];
8b1ab7bf 1581
572c6a38 1582 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1583 int i;
572c6a38 1584 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1585
572c6a38
RB
1586 for (i = 0; i < s->nb_streams; i++)
1587 cache[i] = s->streams[i]->discard;
1588
1589 if (!rt->need_subscription) {
1590 if (memcmp (cache, rt->real_setup_cache,
1591 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1592 snprintf(cmd, sizeof(cmd),
572c6a38
RB
1593 "SET_PARAMETER %s RTSP/1.0\r\n"
1594 "Unsubscribe: %s\r\n",
1595 s->filename, rt->last_subscription);
1596 rtsp_send_cmd(s, cmd, reply, NULL);
1597 if (reply->status_code != RTSP_STATUS_OK)
1598 return AVERROR_INVALIDDATA;
1599 rt->need_subscription = 1;
1600 }
1256d16b 1601 }
1256d16b 1602
572c6a38
RB
1603 if (rt->need_subscription) {
1604 int r, rule_nr, first = 1;
1605
1606 memcpy(rt->real_setup_cache, cache,
1607 sizeof(enum AVDiscard) * s->nb_streams);
1608 rt->last_subscription[0] = 0;
1609
1610 snprintf(cmd, sizeof(cmd),
1611 "SET_PARAMETER %s RTSP/1.0\r\n"
1612 "Subscribe: ",
1613 s->filename);
1614 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1615 rule_nr = 0;
1616 for (r = 0; r < s->nb_streams; r++) {
1617 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1618 if (s->streams[r]->discard != AVDISCARD_ALL) {
1619 if (!first)
1620 av_strlcat(rt->last_subscription, ",",
1621 sizeof(rt->last_subscription));
1622 ff_rdt_subscribe_rule(
1623 rt->last_subscription,
1624 sizeof(rt->last_subscription), i, rule_nr);
1625 first = 0;
1626 }
1627 rule_nr++;
1628 }
1629 }
1630 }
1631 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1632 rtsp_send_cmd(s, cmd, reply, NULL);
1633 if (reply->status_code != RTSP_STATUS_OK)
1634 return AVERROR_INVALIDDATA;
1635 rt->need_subscription = 0;
1636
1637 if (rt->state == RTSP_STATE_PLAYING)
1638 rtsp_read_play (s);
1639 }
1256d16b
RB
1640 }
1641
d7250724 1642 ret = rtsp_fetch_packet(s, pkt);
c8965800 1643 if (ret < 0)
98713182 1644 return ret;
30e79845
RB
1645
1646 /* send dummy request to keep TCP connection alive */
1647 if ((rt->server_type == RTSP_SERVER_WMS ||
1648 rt->server_type == RTSP_SERVER_REAL) &&
1649 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1650 if (rt->server_type == RTSP_SERVER_WMS) {
1651 snprintf(cmd, sizeof(cmd) - 1,
1652 "GET_PARAMETER %s RTSP/1.0\r\n",
1653 s->filename);
1654 rtsp_send_cmd_async(s, cmd, reply, NULL);
1655 } else {
1656 rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n",
1657 reply, NULL);
1658 }
1659 }
1660
8b1ab7bf 1661 return 0;
1617ad97
FB
1662}
1663
ff762d6e
FB
1664/* pause the stream */
1665static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1666{
ff762d6e 1667 RTSPState *rt = s->priv_data;
a9e534d5 1668 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1669 char cmd[1024];
1670
b7b8fc34 1671 rt = s->priv_data;
115329f1 1672
ff762d6e
FB
1673 if (rt->state != RTSP_STATE_PLAYING)
1674 return 0;
2e889ae4 1675 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1676 snprintf(cmd, sizeof(cmd),
1677 "PAUSE %s RTSP/1.0\r\n",
1678 s->filename);
1679 rtsp_send_cmd(s, cmd, reply, NULL);
1680 if (reply->status_code != RTSP_STATUS_OK) {
1681 return -1;
1682 }
1256d16b 1683 }
5f86057f
RB
1684 rt->state = RTSP_STATE_PAUSED;
1685 return 0;
b7b8fc34
FB
1686}
1687
115329f1 1688static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1689 int64_t timestamp, int flags)
ff762d6e
FB
1690{
1691 RTSPState *rt = s->priv_data;
115329f1 1692
c8965800
RB
1693 rt->seek_timestamp = av_rescale_q(timestamp,
1694 s->streams[stream_index]->time_base,
1695 AV_TIME_BASE_Q);
ff762d6e
FB
1696 switch(rt->state) {
1697 default:
1698 case RTSP_STATE_IDLE:
1699 break;
1700 case RTSP_STATE_PLAYING:
ec606b36
LB
1701 if (rtsp_read_pause(s) != 0)
1702 return -1;
1703 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1704 if (rtsp_read_play(s) != 0)
1705 return -1;
1706 break;
1707 case RTSP_STATE_PAUSED:
1708 rt->state = RTSP_STATE_IDLE;
1709 break;
1710 }
1711 return 0;
1712}
1713
1617ad97
FB
1714static int rtsp_read_close(AVFormatContext *s)
1715{
1716 RTSPState *rt = s->priv_data;
a9e534d5 1717 RTSPMessageHeader reply1, *reply = &reply1;
1617ad97
FB
1718 char cmd[1024];
1719
b6892136 1720#if 0
1617ad97 1721 /* NOTE: it is valid to flush the buffer here */
90abbdba 1722 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1723 url_fclose(&rt->rtsp_gb);
1724 }
b6892136 1725#endif
115329f1 1726 snprintf(cmd, sizeof(cmd),
b6892136 1727 "TEARDOWN %s RTSP/1.0\r\n",
1617ad97
FB
1728 s->filename);
1729 rtsp_send_cmd(s, cmd, reply, NULL);
1730
8b1ab7bf 1731 rtsp_close_streams(rt);
1617ad97
FB
1732 url_close(rt->rtsp_hd);
1733 return 0;
1734}
1735
d2a067d1 1736AVInputFormat rtsp_demuxer = {
1617ad97 1737 "rtsp",
bde15e74 1738 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1739 sizeof(RTSPState),
1740 rtsp_probe,
1741 rtsp_read_header,
1742 rtsp_read_packet,
1743 rtsp_read_close,
ff762d6e 1744 rtsp_read_seek,
bb76a117 1745 .flags = AVFMT_NOFILE,
ff762d6e
FB
1746 .read_play = rtsp_read_play,
1747 .read_pause = rtsp_read_pause,
1617ad97 1748};
96862926 1749#endif
1617ad97 1750
cb1fdc61 1751static int sdp_probe(AVProbeData *p1)
93ced3e8 1752{
0e1ceacd 1753 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1754
1755 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1756 while (p < p_end && *p != '\0') {
c8965800
RB
1757 if (p + sizeof("c=IN IP4") - 1 < p_end &&
1758 av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1759 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1760
c8965800 1761 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1762 if (++p >= p_end)
cb1fdc61 1763 break;
cb1fdc61
FB
1764 if (*p == '\r')
1765 p++;
1766 }
93ced3e8
FB
1767 return 0;
1768}
1769
1770#define SDP_MAX_SIZE 8192
1771
c8965800 1772static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1773{
8b1ab7bf 1774 RTSPState *rt = s->priv_data;
93ced3e8
FB
1775 RTSPStream *rtsp_st;
1776 int size, i, err;
1777 char *content;
1778 char url[1024];
1779
1780 /* read the whole sdp file */
1781 /* XXX: better loading */
1782 content = av_malloc(SDP_MAX_SIZE);
899681cd 1783 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1784 if (size <= 0) {
1785 av_free(content);
1786 return AVERROR_INVALIDDATA;
1787 }
1788 content[size] ='\0';
1789
1790 sdp_parse(s, content);
1791 av_free(content);
1792
1793 /* open each RTP stream */
c8965800 1794 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1795 rtsp_st = rt->rtsp_streams[i];
115329f1 1796
d2bf42be 1797 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
115329f1 1798 inet_ntoa(rtsp_st->sdp_ip),
93ced3e8 1799 rtsp_st->sdp_port,
d2bf42be 1800 rtsp_st->sdp_port,
93ced3e8 1801 rtsp_st->sdp_ttl);
dbf30963 1802 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1803 err = AVERROR_INVALIDDATA;
1804 goto fail;
1805 }
ee0cb67f 1806 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1807 goto fail;
93ced3e8
FB
1808 }
1809 return 0;
c8965800 1810fail:
8b1ab7bf 1811 rtsp_close_streams(rt);
93ced3e8
FB
1812 return err;
1813}
1814
93ced3e8
FB
1815static int sdp_read_close(AVFormatContext *s)
1816{
8b1ab7bf
FB
1817 RTSPState *rt = s->priv_data;
1818 rtsp_close_streams(rt);
93ced3e8
FB
1819 return 0;
1820}
1821
ff70e601 1822AVInputFormat sdp_demuxer = {
93ced3e8 1823 "sdp",
bde15e74 1824 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1825 sizeof(RTSPState),
1826 sdp_probe,
1827 sdp_read_header,
d7250724 1828 rtsp_fetch_packet,
93ced3e8
FB
1829 sdp_read_close,
1830};