Move array specifiers outside DECLARE_ALIGNED() invocations
[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
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 {
c8965800
RB
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
2e13ecfe 932static void rtsp_send_cmd_async(AVFormatContext *s, const char *cmd)
29b9f58b
RB
933{
934 RTSPState *rt = s->priv_data;
935 char buf[4096], buf1[1024];
936
937 rt->seq++;
938 av_strlcpy(buf, cmd, sizeof(buf));
939 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
940 av_strlcat(buf, buf1, sizeof(buf));
941 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
942 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
943 av_strlcat(buf, buf1, sizeof(buf));
944 }
f9337897
RB
945 if (rt->auth_b64)
946 av_strlcatf(buf, sizeof(buf),
ba93ea6d
RB
947 "Authorization: Basic %s\r\n",
948 rt->auth_b64);
29b9f58b 949 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69
BC
950
951 dprintf(s, "Sending:\n%s--\n", buf);
952
29b9f58b 953 url_write(rt->rtsp_hd, buf, strlen(buf));
30e79845
RB
954 rt->last_cmd_time = av_gettime();
955}
956
c8965800
RB
957static void rtsp_send_cmd(AVFormatContext *s,
958 const char *cmd, RTSPMessageHeader *reply,
959 unsigned char **content_ptr)
30e79845 960{
2e13ecfe 961 rtsp_send_cmd_async(s, cmd);
29b9f58b 962
7e726132 963 rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
964}
965
53620bba
RB
966/**
967 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
968 */
c8965800
RB
969static int make_setup_request(AVFormatContext *s, const char *host, int port,
970 int lower_transport, const char *real_challenge)
1617ad97
FB
971{
972 RTSPState *rt = s->priv_data;
f830c9a4 973 int rtx, j, i, err, interleave = 0;
1617ad97 974 RTSPStream *rtsp_st;
a9e534d5 975 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 976 char cmd[2048];
e9dea59f
RB
977 const char *trans_pref;
978
119b4668 979 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
980 trans_pref = "x-pn-tng";
981 else
982 trans_pref = "RTP/AVP";
115329f1 983
30e79845
RB
984 /* default timeout: 1 minute */
985 rt->timeout = 60;
986
1617ad97
FB
987 /* for each stream, make the setup request */
988 /* XXX: we assume the same server is used for the control of each
c8965800 989 * RTSP stream */
d1ccf0e0 990
c8965800 991 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
992 char transport[2048];
993
f830c9a4
RB
994 /**
995 * WMS serves all UDP data over a single connection, the RTX, which
996 * isn't necessarily the first in the SDP but has to be the first
997 * to be set up, else the second/third SETUP will fail with a 461.
998 */
999 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1000 rt->server_type == RTSP_SERVER_WMS) {
1001 if (i == 0) {
1002 /* rtx first */
1003 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1004 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1005 if (len >= 4 &&
c8965800
RB
1006 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1007 "/rtx"))
f830c9a4
RB
1008 break;
1009 }
1010 if (rtx == rt->nb_rtsp_streams)
1011 return -1; /* no RTX found */
1012 rtsp_st = rt->rtsp_streams[rtx];
1013 } else
1014 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1015 } else
2fea9650 1016 rtsp_st = rt->rtsp_streams[i];
1617ad97 1017
1617ad97 1018 /* RTP/UDP */
90abbdba 1019 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1020 char buf[256];
85fb7b34 1021
f830c9a4
RB
1022 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1023 port = reply->transports[0].client_port_min;
1024 goto have_port;
1025 }
1026
85fb7b34 1027 /* first try in specified port range */
d1ccf0e0 1028 if (RTSP_RTP_PORT_MIN != 0) {
c8965800
RB
1029 while (j <= RTSP_RTP_PORT_MAX) {
1030 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d",
1031 host, j);
1032 /* we will use two ports per rtp stream (rtp and rtcp) */
1033 j += 2;
1034 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1035 goto rtp_opened;
1036 }
1617ad97 1037 }
85fb7b34 1038
c8965800
RB
1039#if 0
1040 /* then try on any port */
1041 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1042 err = AVERROR_INVALIDDATA;
1043 goto fail;
1044 }
1045#endif
85fb7b34
FB
1046
1047 rtp_opened:
8b1ab7bf 1048 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1049 have_port:
0ad306bc 1050 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1051 "%s/UDP;", trans_pref);
1052 if (rt->server_type != RTSP_SERVER_REAL)
1053 av_strlcat(transport, "unicast;", sizeof(transport));
1054 av_strlcatf(transport, sizeof(transport),
1055 "client_port=%d", port);
f830c9a4
RB
1056 if (rt->transport == RTSP_TRANSPORT_RTP &&
1057 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1058 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1059 }
1060
1061 /* RTP/TCP */
90abbdba 1062 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1063 /** For WMS streams, the application streams are only used for
1064 * UDP. When trying to set it up for TCP streams, the server
1065 * will return an error. Therefore, we skip those streams. */
1066 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800
RB
1067 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1068 CODEC_TYPE_DATA)
090438cc 1069 continue;
0ad306bc 1070 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1071 "%s/TCP;", trans_pref);
1072 if (rt->server_type == RTSP_SERVER_WMS)
1073 av_strlcat(transport, "unicast;", sizeof(transport));
1074 av_strlcatf(transport, sizeof(transport),
1075 "interleaved=%d-%d",
1076 interleave, interleave + 1);
1077 interleave += 2;
1617ad97
FB
1078 }
1079
90abbdba 1080 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1081 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1082 "%s/UDP;multicast", trans_pref);
1617ad97 1083 }
d1c6e47c
RB
1084 if (rt->server_type == RTSP_SERVER_REAL ||
1085 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1086 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1087 snprintf(cmd, sizeof(cmd),
b6892136
FB
1088 "SETUP %s RTSP/1.0\r\n"
1089 "Transport: %s\r\n",
1617ad97 1090 rtsp_st->control_url, transport);
2e889ae4 1091 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1092 char real_res[41], real_csum[9];
1093 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1094 real_challenge);
1095 av_strlcatf(cmd, sizeof(cmd),
1096 "If-Match: %s\r\n"
1097 "RealChallenge2: %s, sd=%s\r\n",
1098 rt->session_id, real_res, real_csum);
1099 }
1617ad97 1100 rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1101 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1102 err = 1;
1103 goto fail;
7e6ca34f
RB
1104 } else if (reply->status_code != RTSP_STATUS_OK ||
1105 reply->nb_transports != 1) {
1617ad97
FB
1106 err = AVERROR_INVALIDDATA;
1107 goto fail;
1108 }
1109
1110 /* XXX: same protocol for all streams is required */
1111 if (i > 0) {
119b4668
RB
1112 if (reply->transports[0].lower_transport != rt->lower_transport ||
1113 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1114 err = AVERROR_INVALIDDATA;
1115 goto fail;
1116 }
1117 } else {
90abbdba 1118 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1119 rt->transport = reply->transports[0].transport;
1617ad97
FB
1120 }
1121
1122 /* close RTP connection if not choosen */
90abbdba
RB
1123 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1124 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1125 url_close(rtsp_st->rtp_handle);
1126 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1127 }
1128
90abbdba
RB
1129 switch(reply->transports[0].lower_transport) {
1130 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1131 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1132 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1133 break;
115329f1 1134
c8965800
RB
1135 case RTSP_LOWER_TRANSPORT_UDP: {
1136 char url[1024];
1137
1138 /* XXX: also use address if specified */
1139 snprintf(url, sizeof(url), "rtp://%s:%d",
1140 host, reply->transports[0].server_port_min);
1141 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1142 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1143 err = AVERROR_INVALIDDATA;
1144 goto fail;
1617ad97
FB
1145 }
1146 break;
c8965800
RB
1147 }
1148 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1149 char url[1024];
1150 struct in_addr in;
1151 int port, ttl;
1152
1153 if (reply->transports[0].destination) {
1154 in.s_addr = htonl(reply->transports[0].destination);
1155 port = reply->transports[0].port_min;
1156 ttl = reply->transports[0].ttl;
1157 } else {
1158 in = rtsp_st->sdp_ip;
1159 port = rtsp_st->sdp_port;
1160 ttl = rtsp_st->sdp_ttl;
1161 }
1162 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
1163 inet_ntoa(in), port, ttl);
1164 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1165 err = AVERROR_INVALIDDATA;
1166 goto fail;
1617ad97
FB
1167 }
1168 break;
1169 }
c8965800 1170 }
d1ccf0e0 1171
ee0cb67f 1172 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1173 goto fail;
1617ad97
FB
1174 }
1175
30e79845
RB
1176 if (reply->timeout > 0)
1177 rt->timeout = reply->timeout;
1178
2e889ae4 1179 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1180 rt->need_subscription = 1;
1181
53620bba
RB
1182 return 0;
1183
1184fail:
c8965800 1185 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1186 if (rt->rtsp_streams[i]->rtp_handle) {
1187 url_close(rt->rtsp_streams[i]->rtp_handle);
1188 rt->rtsp_streams[i]->rtp_handle = NULL;
1189 }
1190 }
53620bba
RB
1191 return err;
1192}
1193
1ced9da3
LA
1194static int rtsp_read_play(AVFormatContext *s)
1195{
1196 RTSPState *rt = s->priv_data;
1197 RTSPMessageHeader reply1, *reply = &reply1;
1198 char cmd[1024];
1199
1200 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
1201
1202 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1203 if (rt->state == RTSP_STATE_PAUSED) {
1204 snprintf(cmd, sizeof(cmd),
1205 "PLAY %s RTSP/1.0\r\n",
1206 s->filename);
1207 } else {
1208 snprintf(cmd, sizeof(cmd),
1209 "PLAY %s RTSP/1.0\r\n"
1210 "Range: npt=%0.3f-\r\n",
1211 s->filename,
1212 (double)rt->seek_timestamp / AV_TIME_BASE);
1213 }
1214 rtsp_send_cmd(s, cmd, reply, NULL);
1215 if (reply->status_code != RTSP_STATUS_OK) {
1216 return -1;
1217 }
1218 }
1219 rt->state = RTSP_STATE_PLAYING;
1220 return 0;
1221}
1222
53620bba
RB
1223static int rtsp_read_header(AVFormatContext *s,
1224 AVFormatParameters *ap)
1225{
1226 RTSPState *rt = s->priv_data;
921da217
LB
1227 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1228 char *option_list, *option, *filename;
53620bba
RB
1229 URLContext *rtsp_hd;
1230 int port, ret, err;
a9e534d5 1231 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1232 unsigned char *content = NULL;
90abbdba 1233 int lower_transport_mask = 0;
1cf151e9 1234 char real_challenge[64];
c8965800 1235redirect:
53620bba 1236 /* extract hostname and port */
f9337897 1237 url_split(NULL, 0, auth, sizeof(auth),
53620bba 1238 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897
RB
1239 if (*auth) {
1240 int auth_len = strlen(auth), b64_len = ((auth_len + 2) / 3) * 4 + 1;
1241
1242 if (!(rt->auth_b64 = av_malloc(b64_len)))
1243 return AVERROR(ENOMEM);
1244 if (!av_base64_encode(rt->auth_b64, b64_len, auth, auth_len)) {
1245 err = AVERROR(EINVAL);
1246 goto fail;
1247 }
1248 }
53620bba
RB
1249 if (port < 0)
1250 port = RTSP_DEFAULT_PORT;
1251
1252 /* search for options */
1253 option_list = strchr(path, '?');
1254 if (option_list) {
921da217 1255 filename = strchr(s->filename, '?');
c8965800 1256 while (option_list) {
53620bba 1257 /* move the option pointer */
921da217 1258 option = ++option_list;
53620bba
RB
1259 option_list = strchr(option_list, '&');
1260 if (option_list)
921da217
LB
1261 *option_list = 0;
1262
53620bba 1263 /* handle the options */
c8965800 1264 if (!strcmp(option, "udp")) {
90abbdba 1265 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1266 } else if (!strcmp(option, "multicast")) {
90abbdba 1267 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1268 } else if (!strcmp(option, "tcp")) {
90abbdba 1269 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
c8965800 1270 } else {
921da217
LB
1271 strcpy(++filename, option);
1272 filename += strlen(option);
1273 if (option_list) *filename = '&';
1274 }
53620bba 1275 }
921da217 1276 *filename = 0;
53620bba
RB
1277 }
1278
90abbdba 1279 if (!lower_transport_mask)
2a1d51c5 1280 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba
RB
1281
1282 /* open the tcp connexion */
1283 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
f9337897
RB
1284 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) {
1285 err = AVERROR(EIO);
1286 goto fail;
1287 }
53620bba
RB
1288 rt->rtsp_hd = rtsp_hd;
1289 rt->seq = 0;
1290
c8965800
RB
1291 /* request options supported by the server; this also detects server
1292 * type */
1cf151e9
RB
1293 for (rt->server_type = RTSP_SERVER_RTP;;) {
1294 snprintf(cmd, sizeof(cmd),
1295 "OPTIONS %s RTSP/1.0\r\n", s->filename);
2e889ae4 1296 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1297 av_strlcat(cmd,
1298 /**
1299 * The following entries are required for proper
1300 * streaming from a Realmedia server. They are
1301 * interdependent in some way although we currently
1302 * don't quite understand how. Values were copied
1303 * from mplayer SVN r23589.
1304 * @param CompanyID is a 16-byte ID in base64
1305 * @param ClientChallenge is a 16-byte ID in hex
1306 */
1307 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1308 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1309 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1310 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1311 sizeof(cmd));
1312 rtsp_send_cmd(s, cmd, reply, NULL);
1313 if (reply->status_code != RTSP_STATUS_OK) {
1314 err = AVERROR_INVALIDDATA;
1315 goto fail;
1316 }
1317
1318 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1319 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1320 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1321 continue;
7a86bafa
RB
1322 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1323 rt->server_type = RTSP_SERVER_WMS;
c8965800 1324 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1325 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1326 break;
1327 }
1328
53620bba
RB
1329 /* describe the stream */
1330 snprintf(cmd, sizeof(cmd),
1331 "DESCRIBE %s RTSP/1.0\r\n"
1332 "Accept: application/sdp\r\n",
1333 s->filename);
2e889ae4 1334 if (rt->server_type == RTSP_SERVER_REAL) {
897ade1b
RB
1335 /**
1336 * The Require: attribute is needed for proper streaming from
1337 * Realmedia servers.
1338 */
1339 av_strlcat(cmd,
1340 "Require: com.real.retain-entity-for-setup\r\n",
1341 sizeof(cmd));
1342 }
53620bba
RB
1343 rtsp_send_cmd(s, cmd, reply, &content);
1344 if (!content) {
1345 err = AVERROR_INVALIDDATA;
1346 goto fail;
1347 }
1348 if (reply->status_code != RTSP_STATUS_OK) {
1349 err = AVERROR_INVALIDDATA;
1350 goto fail;
1351 }
1352
1353 /* now we got the SDP description, we parse it */
1354 ret = sdp_parse(s, (const char *)content);
1355 av_freep(&content);
1356 if (ret < 0) {
1357 err = AVERROR_INVALIDDATA;
1358 goto fail;
1359 }
1360
8a8754d8 1361 do {
c8965800
RB
1362 int lower_transport = ff_log2_tab[lower_transport_mask &
1363 ~(lower_transport_mask - 1)];
8a8754d8 1364
90abbdba 1365 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1366 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1367 real_challenge : NULL);
8a8754d8 1368 if (err < 0)
7e6ca34f 1369 goto fail;
90abbdba
RB
1370 lower_transport_mask &= ~(1 << lower_transport);
1371 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1372 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1373 goto fail;
1374 }
1375 } while (err);
53620bba 1376
ff762d6e 1377 rt->state = RTSP_STATE_IDLE;
c8965800 1378 rt->seek_timestamp = 0; /* default is to start stream at position zero */
c04c3282 1379 if (ap->initial_pause) {
ff762d6e
FB
1380 /* do not start immediately */
1381 } else {
1382 if (rtsp_read_play(s) < 0) {
1383 err = AVERROR_INVALIDDATA;
1617ad97
FB
1384 goto fail;
1385 }
1386 }
1617ad97
FB
1387 return 0;
1388 fail:
8b1ab7bf 1389 rtsp_close_streams(rt);
1617ad97
FB
1390 av_freep(&content);
1391 url_close(rt->rtsp_hd);
d243ba30
LB
1392 if (reply->status_code >=300 && reply->status_code < 400) {
1393 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1394 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1395 reply->status_code,
1396 s->filename);
1397 goto redirect;
1398 }
1617ad97
FB
1399 return err;
1400}
1401
0e59034e
RB
1402static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1403 uint8_t *buf, int buf_size)
1404{
1405 RTSPState *rt = s->priv_data;
1406 RTSPStream *rtsp_st;
1407 fd_set rfds;
1408 int fd, fd_max, n, i, ret, tcp_fd;
1409 struct timeval tv;
1410
c8965800 1411 for (;;) {
0e59034e
RB
1412 if (url_interrupt_cb())
1413 return AVERROR(EINTR);
1414 FD_ZERO(&rfds);
1415 if (rt->rtsp_hd) {
1416 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1417 FD_SET(tcp_fd, &rfds);
1418 } else {
1419 fd_max = 0;
1420 tcp_fd = -1;
1421 }
c8965800 1422 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1423 rtsp_st = rt->rtsp_streams[i];
1424 if (rtsp_st->rtp_handle) {
1425 /* currently, we cannot probe RTCP handle because of
1426 * blocking restrictions */
1427 fd = url_get_file_handle(rtsp_st->rtp_handle);
1428 if (fd > fd_max)
1429 fd_max = fd;
1430 FD_SET(fd, &rfds);
1431 }
1432 }
1433 tv.tv_sec = 0;
1434 tv.tv_usec = 100 * 1000;
1435 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1436 if (n > 0) {
c8965800 1437 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1438 rtsp_st = rt->rtsp_streams[i];
1439 if (rtsp_st->rtp_handle) {
1440 fd = url_get_file_handle(rtsp_st->rtp_handle);
1441 if (FD_ISSET(fd, &rfds)) {
1442 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1443 if (ret > 0) {
1444 *prtsp_st = rtsp_st;
1445 return ret;
1446 }
1447 }
1448 }
1449 }
1450#if CONFIG_RTSP_DEMUXER
1451 if (FD_ISSET(tcp_fd, &rfds)) {
1452 RTSPMessageHeader reply;
1453
1454 rtsp_read_reply(s, &reply, NULL, 0);
1455 /* XXX: parse message */
1456 if (rt->state != RTSP_STATE_PLAYING)
1457 return 0;
1458 }
1459#endif
1460 }
1461 }
1462}
1463
8b1ab7bf
FB
1464static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1465 uint8_t *buf, int buf_size)
1617ad97
FB
1466{
1467 RTSPState *rt = s->priv_data;
b6892136 1468 int id, len, i, ret;
1617ad97 1469 RTSPStream *rtsp_st;
1617ad97 1470
b6892136 1471#ifdef DEBUG_RTP_TCP
67c9cd69 1472 dprintf(s, "tcp_read_packet:\n");
b6892136 1473#endif
c8965800
RB
1474redo:
1475 for (;;) {
7e726132
RB
1476 RTSPMessageHeader reply;
1477
1478 ret = rtsp_read_reply(s, &reply, NULL, 1);
1479 if (ret == -1)
8b1ab7bf 1480 return -1;
7e726132 1481 if (ret == 1) /* received '$' */
1617ad97 1482 break;
7e726132 1483 /* XXX: parse message */
fccb1770
RB
1484 if (rt->state != RTSP_STATE_PLAYING)
1485 return 0;
1617ad97 1486 }
0e848977 1487 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1488 if (ret != 3)
8b1ab7bf 1489 return -1;
c8965800 1490 id = buf[0];
80fb8234 1491 len = AV_RB16(buf + 1);
b6892136 1492#ifdef DEBUG_RTP_TCP
67c9cd69 1493 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1494#endif
8b1ab7bf 1495 if (len > buf_size || len < 12)
1617ad97
FB
1496 goto redo;
1497 /* get the data */
0e848977 1498 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1499 if (ret != len)
8b1ab7bf 1500 return -1;
985b05d3 1501 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1502 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1503 return -1;
115329f1 1504
1617ad97 1505 /* find the matching stream */
c8965800 1506 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1507 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1508 if (id >= rtsp_st->interleaved_min &&
1509 id <= rtsp_st->interleaved_max)
1617ad97
FB
1510 goto found;
1511 }
1512 goto redo;
c8965800 1513found:
8b1ab7bf
FB
1514 *prtsp_st = rtsp_st;
1515 return len;
1617ad97
FB
1516}
1517
0e59034e
RB
1518static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1519{
1520 RTSPState *rt = s->priv_data;
1521 int ret, len;
1522 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1523 RTSPStream *rtsp_st;
1524
1525 /* get next frames from the same RTP packet */
1526 if (rt->cur_transport_priv) {
c8965800 1527 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1528 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1529 } else
0e59034e
RB
1530 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1531 if (ret == 0) {
1532 rt->cur_transport_priv = NULL;
1533 return 0;
1534 } else if (ret == 1) {
1535 return 0;
c8965800 1536 } else
0e59034e 1537 rt->cur_transport_priv = NULL;
0e59034e
RB
1538 }
1539
1540 /* read next RTP packet */
1541 redo:
1542 switch(rt->lower_transport) {
1543 default:
1544#if CONFIG_RTSP_DEMUXER
1545 case RTSP_LOWER_TRANSPORT_TCP:
1546 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1547 break;
1548#endif
1549 case RTSP_LOWER_TRANSPORT_UDP:
1550 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1551 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1552 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1553 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1554 break;
1555 }
1556 if (len < 0)
1557 return len;
1558 if (len == 0)
1559 return AVERROR_EOF;
c8965800 1560 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1561 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
c8965800 1562 } else
0e59034e
RB
1563 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
1564 if (ret < 0)
1565 goto redo;
c8965800 1566 if (ret == 1)
0e59034e
RB
1567 /* more packets may follow, so we save the RTP context */
1568 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1569
1570 return ret;
1571}
1572
c8965800 1573static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1574{
1575 RTSPState *rt = s->priv_data;
98713182 1576 int ret;
30e79845
RB
1577 RTSPMessageHeader reply1, *reply = &reply1;
1578 char cmd[1024];
8b1ab7bf 1579
572c6a38 1580 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1581 int i;
572c6a38 1582 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1583
572c6a38
RB
1584 for (i = 0; i < s->nb_streams; i++)
1585 cache[i] = s->streams[i]->discard;
1586
1587 if (!rt->need_subscription) {
1588 if (memcmp (cache, rt->real_setup_cache,
1589 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1590 snprintf(cmd, sizeof(cmd),
7eaa646f
RB
1591 "SET_PARAMETER %s RTSP/1.0\r\n"
1592 "Unsubscribe: %s\r\n",
1593 s->filename, rt->last_subscription);
572c6a38
RB
1594 rtsp_send_cmd(s, cmd, reply, NULL);
1595 if (reply->status_code != RTSP_STATUS_OK)
1596 return AVERROR_INVALIDDATA;
1597 rt->need_subscription = 1;
1598 }
1256d16b 1599 }
1256d16b 1600
572c6a38
RB
1601 if (rt->need_subscription) {
1602 int r, rule_nr, first = 1;
1603
1604 memcpy(rt->real_setup_cache, cache,
1605 sizeof(enum AVDiscard) * s->nb_streams);
1606 rt->last_subscription[0] = 0;
1607
1608 snprintf(cmd, sizeof(cmd),
1609 "SET_PARAMETER %s RTSP/1.0\r\n"
1610 "Subscribe: ",
1611 s->filename);
1612 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1613 rule_nr = 0;
1614 for (r = 0; r < s->nb_streams; r++) {
1615 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1616 if (s->streams[r]->discard != AVDISCARD_ALL) {
1617 if (!first)
1618 av_strlcat(rt->last_subscription, ",",
1619 sizeof(rt->last_subscription));
1620 ff_rdt_subscribe_rule(
1621 rt->last_subscription,
1622 sizeof(rt->last_subscription), i, rule_nr);
1623 first = 0;
1624 }
1625 rule_nr++;
1626 }
1627 }
1628 }
1629 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1630 rtsp_send_cmd(s, cmd, reply, NULL);
1631 if (reply->status_code != RTSP_STATUS_OK)
1632 return AVERROR_INVALIDDATA;
1633 rt->need_subscription = 0;
1634
1635 if (rt->state == RTSP_STATE_PLAYING)
1636 rtsp_read_play (s);
1637 }
1256d16b
RB
1638 }
1639
d7250724 1640 ret = rtsp_fetch_packet(s, pkt);
c8965800 1641 if (ret < 0)
98713182 1642 return ret;
30e79845
RB
1643
1644 /* send dummy request to keep TCP connection alive */
1645 if ((rt->server_type == RTSP_SERVER_WMS ||
1646 rt->server_type == RTSP_SERVER_REAL) &&
1647 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1648 if (rt->server_type == RTSP_SERVER_WMS) {
1649 snprintf(cmd, sizeof(cmd) - 1,
1650 "GET_PARAMETER %s RTSP/1.0\r\n",
1651 s->filename);
2e13ecfe 1652 rtsp_send_cmd_async(s, cmd);
30e79845 1653 } else {
2e13ecfe 1654 rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n");
30e79845
RB
1655 }
1656 }
1657
8b1ab7bf 1658 return 0;
1617ad97
FB
1659}
1660
ff762d6e
FB
1661/* pause the stream */
1662static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1663{
ff762d6e 1664 RTSPState *rt = s->priv_data;
a9e534d5 1665 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1666 char cmd[1024];
1667
b7b8fc34 1668 rt = s->priv_data;
115329f1 1669
ff762d6e
FB
1670 if (rt->state != RTSP_STATE_PLAYING)
1671 return 0;
2e889ae4 1672 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1673 snprintf(cmd, sizeof(cmd),
1674 "PAUSE %s RTSP/1.0\r\n",
1675 s->filename);
1676 rtsp_send_cmd(s, cmd, reply, NULL);
1677 if (reply->status_code != RTSP_STATUS_OK) {
1678 return -1;
1679 }
1256d16b 1680 }
5f86057f
RB
1681 rt->state = RTSP_STATE_PAUSED;
1682 return 0;
b7b8fc34
FB
1683}
1684
115329f1 1685static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1686 int64_t timestamp, int flags)
ff762d6e
FB
1687{
1688 RTSPState *rt = s->priv_data;
115329f1 1689
c8965800
RB
1690 rt->seek_timestamp = av_rescale_q(timestamp,
1691 s->streams[stream_index]->time_base,
1692 AV_TIME_BASE_Q);
ff762d6e
FB
1693 switch(rt->state) {
1694 default:
1695 case RTSP_STATE_IDLE:
1696 break;
1697 case RTSP_STATE_PLAYING:
ec606b36
LB
1698 if (rtsp_read_pause(s) != 0)
1699 return -1;
1700 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1701 if (rtsp_read_play(s) != 0)
1702 return -1;
1703 break;
1704 case RTSP_STATE_PAUSED:
1705 rt->state = RTSP_STATE_IDLE;
1706 break;
1707 }
1708 return 0;
1709}
1710
1617ad97
FB
1711static int rtsp_read_close(AVFormatContext *s)
1712{
1713 RTSPState *rt = s->priv_data;
1617ad97
FB
1714 char cmd[1024];
1715
b6892136 1716#if 0
1617ad97 1717 /* NOTE: it is valid to flush the buffer here */
90abbdba 1718 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1719 url_fclose(&rt->rtsp_gb);
1720 }
b6892136 1721#endif
115329f1 1722 snprintf(cmd, sizeof(cmd),
b6892136 1723 "TEARDOWN %s RTSP/1.0\r\n",
1617ad97 1724 s->filename);
2e13ecfe 1725 rtsp_send_cmd_async(s, cmd);
1617ad97 1726
8b1ab7bf 1727 rtsp_close_streams(rt);
1617ad97
FB
1728 url_close(rt->rtsp_hd);
1729 return 0;
1730}
1731
d2a067d1 1732AVInputFormat rtsp_demuxer = {
1617ad97 1733 "rtsp",
bde15e74 1734 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1735 sizeof(RTSPState),
1736 rtsp_probe,
1737 rtsp_read_header,
1738 rtsp_read_packet,
1739 rtsp_read_close,
ff762d6e 1740 rtsp_read_seek,
bb76a117 1741 .flags = AVFMT_NOFILE,
ff762d6e
FB
1742 .read_play = rtsp_read_play,
1743 .read_pause = rtsp_read_pause,
1617ad97 1744};
96862926 1745#endif
1617ad97 1746
cb1fdc61 1747static int sdp_probe(AVProbeData *p1)
93ced3e8 1748{
0e1ceacd 1749 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1750
1751 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1752 while (p < p_end && *p != '\0') {
c8965800
RB
1753 if (p + sizeof("c=IN IP4") - 1 < p_end &&
1754 av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1755 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1756
c8965800 1757 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1758 if (++p >= p_end)
cb1fdc61 1759 break;
cb1fdc61
FB
1760 if (*p == '\r')
1761 p++;
1762 }
93ced3e8
FB
1763 return 0;
1764}
1765
1766#define SDP_MAX_SIZE 8192
1767
c8965800 1768static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1769{
8b1ab7bf 1770 RTSPState *rt = s->priv_data;
93ced3e8
FB
1771 RTSPStream *rtsp_st;
1772 int size, i, err;
1773 char *content;
1774 char url[1024];
1775
1776 /* read the whole sdp file */
1777 /* XXX: better loading */
1778 content = av_malloc(SDP_MAX_SIZE);
899681cd 1779 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1780 if (size <= 0) {
1781 av_free(content);
1782 return AVERROR_INVALIDDATA;
1783 }
1784 content[size] ='\0';
1785
1786 sdp_parse(s, content);
1787 av_free(content);
1788
1789 /* open each RTP stream */
c8965800 1790 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1791 rtsp_st = rt->rtsp_streams[i];
115329f1 1792
d2bf42be 1793 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
115329f1 1794 inet_ntoa(rtsp_st->sdp_ip),
93ced3e8 1795 rtsp_st->sdp_port,
d2bf42be 1796 rtsp_st->sdp_port,
93ced3e8 1797 rtsp_st->sdp_ttl);
dbf30963 1798 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1799 err = AVERROR_INVALIDDATA;
1800 goto fail;
1801 }
ee0cb67f 1802 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1803 goto fail;
93ced3e8
FB
1804 }
1805 return 0;
c8965800 1806fail:
8b1ab7bf 1807 rtsp_close_streams(rt);
93ced3e8
FB
1808 return err;
1809}
1810
93ced3e8
FB
1811static int sdp_read_close(AVFormatContext *s)
1812{
8b1ab7bf
FB
1813 RTSPState *rt = s->priv_data;
1814 rtsp_close_streams(rt);
93ced3e8
FB
1815 return 0;
1816}
1817
ff70e601 1818AVInputFormat sdp_demuxer = {
93ced3e8 1819 "sdp",
bde15e74 1820 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1821 sizeof(RTSPState),
1822 sdp_probe,
1823 sdp_read_header,
d7250724 1824 rtsp_fetch_packet,
93ced3e8
FB
1825 sdp_read_close,
1826};