Add HE-AAC v2 support to the AAC decoder.
[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,
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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
f9337897 22#include "libavutil/base64.h"
245976da 23#include "libavutil/avstring.h"
6a5d31ac 24#include "libavutil/intreadwrite.h"
f5d33f52 25#include "libavutil/random_seed.h"
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26#include "avformat.h"
27
db0ed93e 28#include <sys/time.h>
b250f9c6 29#if HAVE_SYS_SELECT_H
933bd8e2 30#include <sys/select.h>
6ad1c9c9 31#endif
ea452b54 32#include <strings.h>
e4a9e3cc 33#include "internal.h"
42572ef5 34#include "network.h"
cbfa66d0 35#include "os_support.h"
f5d33f52 36#include "http.h"
c971ff19 37#include "rtsp.h"
1617ad97 38
302879cb 39#include "rtpdec.h"
e9dea59f 40#include "rdt.h"
f65919af 41#include "rtpdec_asf.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
c2bfd816 50/* Timeout values for socket select, in ms,
9cba6f5f
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51 * and read_packet(), in seconds */
52#define SELECT_TIMEOUT_MS 100
53#define READ_PACKET_TIMEOUT_S 10
54#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / SELECT_TIMEOUT_MS
55
1ef36a70 56#define SPACE_CHARS " \t\r\n"
da1e126e
RB
57/* we use memchr() instead of strchr() here because strchr() will return
58 * the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */
59#define redir_isspace(c) memchr(SPACE_CHARS, c, 4)
1617ad97
FB
60static void skip_spaces(const char **pp)
61{
62 const char *p;
63 p = *pp;
64 while (redir_isspace(*p))
65 p++;
66 *pp = p;
67}
68
1ef36a70
RB
69static void get_word_until_chars(char *buf, int buf_size,
70 const char *sep, const char **pp)
1617ad97
FB
71{
72 const char *p;
73 char *q;
74
75 p = *pp;
76 skip_spaces(&p);
77 q = buf;
78 while (!strchr(sep, *p) && *p != '\0') {
79 if ((q - buf) < buf_size - 1)
80 *q++ = *p;
81 p++;
82 }
83 if (buf_size > 0)
84 *q = '\0';
85 *pp = p;
86}
87
1ef36a70
RB
88static void get_word_sep(char *buf, int buf_size, const char *sep,
89 const char **pp)
1617ad97 90{
1ef36a70
RB
91 if (**pp == '/') (*pp)++;
92 get_word_until_chars(buf, buf_size, sep, pp);
93}
1617ad97 94
1ef36a70
RB
95static void get_word(char *buf, int buf_size, const char **pp)
96{
97 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
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98}
99
c8965800 100/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3
RB
101static int sdp_parse_rtpmap(AVFormatContext *s,
102 AVCodecContext *codec, RTSPStream *rtsp_st,
c8965800 103 int payload_type, const char *p)
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104{
105 char buf[256];
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106 int i;
107 AVCodec *c;
7b49ce2e 108 const char *c_name;
93ced3e8 109
d1ccf0e0 110 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
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RB
111 * see if we can handle this kind of payload.
112 * The space should normally not be there but some Real streams or
113 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
114 * have a trailing space. */
115 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 116 if (payload_type >= RTP_PT_PRIVATE) {
c8965800
RB
117 RTPDynamicProtocolHandler *handler;
118 for (handler = RTPFirstDynamicPayloadHandler;
119 handler; handler = handler->next) {
120 if (!strcasecmp(buf, handler->enc_name) &&
121 codec->codec_type == handler->codec_type) {
122 codec->codec_id = handler->codec_id;
123 rtsp_st->dynamic_handler = handler;
124 if (handler->open)
125 rtsp_st->dynamic_protocol_context = handler->open();
d1ccf0e0
RD
126 break;
127 }
4934884a 128 }
93ced3e8 129 } else {
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130 /* We are in a standard case
131 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 132 /* search into AVRtpPayloadTypes[] */
7ed19d7f 133 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
134 }
135
136 c = avcodec_find_decoder(codec->codec_id);
137 if (c && c->name)
7b49ce2e 138 c_name = c->name;
d1ccf0e0 139 else
170870b7 140 c_name = "(null)";
d1ccf0e0 141
7515ed0c
RB
142 get_word_sep(buf, sizeof(buf), "/", &p);
143 i = atoi(buf);
144 switch (codec->codec_type) {
72415b2a 145 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
146 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
147 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
148 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
149 if (i > 0) {
150 codec->sample_rate = i;
151 get_word_sep(buf, sizeof(buf), "/", &p);
152 i = atoi(buf);
153 if (i > 0)
154 codec->channels = i;
155 // TODO: there is a bug here; if it is a mono stream, and
156 // less than 22000Hz, faad upconverts to stereo and twice
157 // the frequency. No problem, but the sample rate is being
158 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 159 }
7515ed0c
RB
160 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
161 codec->sample_rate);
162 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
163 codec->channels);
164 break;
72415b2a 165 case AVMEDIA_TYPE_VIDEO:
7515ed0c
RB
166 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
167 break;
168 default:
169 break;
170 }
171 return 0;
93ced3e8
FB
172}
173
c8965800 174/* return the length and optionally the data */
93ced3e8
FB
175static int hex_to_data(uint8_t *data, const char *p)
176{
177 int c, len, v;
178
179 len = 0;
180 v = 1;
c8965800 181 for (;;) {
93ced3e8 182 skip_spaces(&p);
6a8c8b36 183 if (*p == '\0')
93ced3e8 184 break;
c8965800 185 c = toupper((unsigned char) *p++);
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FB
186 if (c >= '0' && c <= '9')
187 c = c - '0';
188 else if (c >= 'A' && c <= 'F')
189 c = c - 'A' + 10;
190 else
191 break;
192 v = (v << 4) | c;
193 if (v & 0x100) {
194 if (data)
195 data[len] = v;
196 len++;
197 v = 1;
198 }
199 }
200 return len;
201}
202
e6327fba
RB
203static void sdp_parse_fmtp_config(AVCodecContext * codec, void *ctx,
204 char *attr, char *value)
d1ccf0e0
RD
205{
206 switch (codec->codec_id) {
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RB
207 case CODEC_ID_MPEG4:
208 case CODEC_ID_AAC:
209 if (!strcmp(attr, "config")) {
210 /* decode the hexa encoded parameter */
211 int len = hex_to_data(NULL, value);
212 if (codec->extradata)
213 av_free(codec->extradata);
214 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
215 if (!codec->extradata)
216 return;
217 codec->extradata_size = len;
218 hex_to_data(codec->extradata, value);
219 }
220 break;
c8965800
RB
221 default:
222 break;
d1ccf0e0
RD
223 }
224 return;
225}
226
644e7acb 227typedef struct {
7b49ce2e 228 const char *str;
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RB
229 uint16_t type;
230 uint32_t offset;
644e7acb 231} AttrNameMap;
d1ccf0e0 232
c2bfd816 233/* All known fmtp parameters and the corresponding RTPAttrTypeEnum */
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RD
234#define ATTR_NAME_TYPE_INT 0
235#define ATTR_NAME_TYPE_STR 1
644e7acb 236static const AttrNameMap attr_names[]=
d1ccf0e0 237{
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RB
238 { "SizeLength", ATTR_NAME_TYPE_INT,
239 offsetof(RTPPayloadData, sizelength) },
240 { "IndexLength", ATTR_NAME_TYPE_INT,
241 offsetof(RTPPayloadData, indexlength) },
242 { "IndexDeltaLength", ATTR_NAME_TYPE_INT,
243 offsetof(RTPPayloadData, indexdeltalength) },
244 { "profile-level-id", ATTR_NAME_TYPE_INT,
245 offsetof(RTPPayloadData, profile_level_id) },
246 { "StreamType", ATTR_NAME_TYPE_INT,
247 offsetof(RTPPayloadData, streamtype) },
248 { "mode", ATTR_NAME_TYPE_STR,
249 offsetof(RTPPayloadData, mode) },
250 { NULL, -1, -1 },
d1ccf0e0
RD
251};
252
c2bfd816 253/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
254 * is broken out as a function because it is used in rtp_h264.c, which is
255 * forthcoming. */
3307e6ea 256int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 257 char *value, int value_size)
d0deedcb
RM
258{
259 skip_spaces(p);
c8965800 260 if (**p) {
d0deedcb
RM
261 get_word_sep(attr, attr_size, "=", p);
262 if (**p == '=')
263 (*p)++;
264 get_word_sep(value, value_size, ";", p);
265 if (**p == ';')
266 (*p)++;
267 return 1;
268 }
269 return 0;
270}
271
d1ccf0e0
RD
272/* parse a SDP line and save stream attributes */
273static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
274{
275 char attr[256];
afcea58c 276 char value[4096];
d1ccf0e0 277 int i;
d1ccf0e0 278 RTSPStream *rtsp_st = st->priv_data;
01f4895c 279 AVCodecContext *codec = st->codec;
be73a544 280 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
281
282 /* loop on each attribute */
3307e6ea 283 while (ff_rtsp_next_attr_and_value(&p, attr, sizeof(attr),
93993933 284 value, sizeof(value))) {
c8965800
RB
285 /* grab the codec extra_data from the config parameter of the fmtp
286 * line */
e6327fba
RB
287 sdp_parse_fmtp_config(codec, rtsp_st->dynamic_protocol_context,
288 attr, value);
d1ccf0e0
RD
289 /* Looking for a known attribute */
290 for (i = 0; attr_names[i].str; ++i) {
291 if (!strcasecmp(attr, attr_names[i].str)) {
c8965800
RB
292 if (attr_names[i].type == ATTR_NAME_TYPE_INT) {
293 *(int *)((char *)rtp_payload_data +
294 attr_names[i].offset) = atoi(value);
295 } else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
296 *(char **)((char *)rtp_payload_data +
297 attr_names[i].offset) = av_strdup(value);
bb270c08 298 }
93ced3e8 299 }
93ced3e8
FB
300 }
301}
302
debe86bf 303/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
31693e00
RM
304 * and end time.
305 * Used for seeking in the rtp stream.
306 */
307static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
308{
309 char buf[256];
310
311 skip_spaces(&p);
f7d78f36 312 if (!av_stristart(p, "npt=", &p))
31693e00
RM
313 return;
314
315 *start = AV_NOPTS_VALUE;
316 *end = AV_NOPTS_VALUE;
317
318 get_word_sep(buf, sizeof(buf), "-", &p);
319 *start = parse_date(buf, 1);
320 if (*p == '-') {
321 p++;
322 get_word_sep(buf, sizeof(buf), "-", &p);
323 *end = parse_date(buf, 1);
324 }
325// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
326// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
327}
328
93ced3e8
FB
329typedef struct SDPParseState {
330 /* SDP only */
331 struct in_addr default_ip;
c8965800
RB
332 int default_ttl;
333 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
334} SDPParseState;
335
336static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
337 int letter, const char *buf)
338{
8b1ab7bf 339 RTSPState *rt = s->priv_data;
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FB
340 char buf1[64], st_type[64];
341 const char *p;
72415b2a 342 enum AVMediaType codec_type;
fb65d2ca 343 int payload_type, i;
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FB
344 AVStream *st;
345 RTSPStream *rtsp_st;
93ced3e8
FB
346 struct in_addr sdp_ip;
347 int ttl;
348
67c9cd69 349 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
350
351 p = buf;
cb760a47
RB
352 if (s1->skip_media && letter != 'm')
353 return;
c8965800 354 switch (letter) {
93ced3e8
FB
355 case 'c':
356 get_word(buf1, sizeof(buf1), &p);
357 if (strcmp(buf1, "IN") != 0)
358 return;
359 get_word(buf1, sizeof(buf1), &p);
360 if (strcmp(buf1, "IP4") != 0)
361 return;
362 get_word_sep(buf1, sizeof(buf1), "/", &p);
ac11d562 363 if (ff_inet_aton(buf1, &sdp_ip) == 0)
93ced3e8
FB
364 return;
365 ttl = 16;
366 if (*p == '/') {
367 p++;
368 get_word_sep(buf1, sizeof(buf1), "/", &p);
369 ttl = atoi(buf1);
370 }
371 if (s->nb_streams == 0) {
372 s1->default_ip = sdp_ip;
373 s1->default_ttl = ttl;
374 } else {
375 st = s->streams[s->nb_streams - 1];
376 rtsp_st = st->priv_data;
377 rtsp_st->sdp_ip = sdp_ip;
378 rtsp_st->sdp_ttl = ttl;
379 }
380 break;
1617ad97 381 case 's':
2ef6c124 382 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
383 break;
384 case 'i':
385 if (s->nb_streams == 0) {
2ef6c124 386 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
387 break;
388 }
389 break;
390 case 'm':
391 /* new stream */
cb760a47 392 s1->skip_media = 0;
1617ad97
FB
393 get_word(st_type, sizeof(st_type), &p);
394 if (!strcmp(st_type, "audio")) {
72415b2a 395 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 396 } else if (!strcmp(st_type, "video")) {
72415b2a 397 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 398 } else if (!strcmp(st_type, "application")) {
72415b2a 399 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 400 } else {
cb760a47 401 s1->skip_media = 1;
1617ad97
FB
402 return;
403 }
1617ad97
FB
404 rtsp_st = av_mallocz(sizeof(RTSPStream));
405 if (!rtsp_st)
406 return;
8b1ab7bf
FB
407 rtsp_st->stream_index = -1;
408 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
409
410 rtsp_st->sdp_ip = s1->default_ip;
411 rtsp_st->sdp_ttl = s1->default_ttl;
412
93ced3e8
FB
413 get_word(buf1, sizeof(buf1), &p); /* port */
414 rtsp_st->sdp_port = atoi(buf1);
415
416 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 417
93ced3e8
FB
418 /* XXX: handle list of formats */
419 get_word(buf1, sizeof(buf1), &p); /* format list */
420 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 421
7ed19d7f 422 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
423 /* no corresponding stream */
424 } else {
425 st = av_new_stream(s, 0);
426 if (!st)
427 return;
428 st->priv_data = rtsp_st;
429 rtsp_st->stream_index = st->index;
01f4895c 430 st->codec->codec_type = codec_type;
d1ccf0e0 431 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 432 /* if standard payload type, we can find the codec right now */
bf6d9818 433 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
434 }
435 }
1617ad97 436 /* put a default control url */
00eb13e0 437 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 438 sizeof(rtsp_st->control_url));
1617ad97
FB
439 break;
440 case 'a':
00eb13e0
AS
441 if (av_strstart(p, "control:", &p)) {
442 if (s->nb_streams == 0) {
443 if (!strncmp(p, "rtsp://", 7))
444 av_strlcpy(rt->control_uri, p,
445 sizeof(rt->control_uri));
446 } else {
1617ad97
FB
447 char proto[32];
448 /* get the control url */
449 st = s->streams[s->nb_streams - 1];
450 rtsp_st = st->priv_data;
115329f1 451
1617ad97 452 /* XXX: may need to add full url resolution */
c5c6e67c 453 ff_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
f984dcf6 454 NULL, NULL, 0, p);
1617ad97
FB
455 if (proto[0] == '\0') {
456 /* relative control URL */
00eb13e0 457 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
c8965800
RB
458 av_strlcat(rtsp_st->control_url, "/",
459 sizeof(rtsp_st->control_url));
460 av_strlcat(rtsp_st->control_url, p,
461 sizeof(rtsp_st->control_url));
462 } else
463 av_strlcpy(rtsp_st->control_url, p,
464 sizeof(rtsp_st->control_url));
00eb13e0 465 }
83d14c85 466 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 467 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 468 get_word(buf1, sizeof(buf1), &p);
93ced3e8 469 payload_type = atoi(buf1);
83d14c85 470 st = s->streams[s->nb_streams - 1];
ff16f551 471 rtsp_st = st->priv_data;
8f3c87f3 472 sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p);
f7d78f36 473 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 474 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 475 get_word(buf1, sizeof(buf1), &p);
93ced3e8 476 payload_type = atoi(buf1);
c8965800
RB
477 for (i = 0; i < s->nb_streams; i++) {
478 st = s->streams[i];
93ced3e8
FB
479 rtsp_st = st->priv_data;
480 if (rtsp_st->sdp_payload_type == payload_type) {
c8965800
RB
481 if (!(rtsp_st->dynamic_handler &&
482 rtsp_st->dynamic_handler->parse_sdp_a_line &&
483 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
484 i, rtsp_st->dynamic_protocol_context, buf)))
ed787542 485 sdp_parse_fmtp(st, p);
93ced3e8
FB
486 }
487 }
c8965800 488 } else if (av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
489 // let dynamic protocol handlers have a stab at the line.
490 get_word(buf1, sizeof(buf1), &p);
491 payload_type = atoi(buf1);
c8965800
RB
492 for (i = 0; i < s->nb_streams; i++) {
493 st = s->streams[i];
d0deedcb 494 rtsp_st = st->priv_data;
c8965800
RB
495 if (rtsp_st->sdp_payload_type == payload_type &&
496 rtsp_st->dynamic_handler &&
497 rtsp_st->dynamic_handler->parse_sdp_a_line)
498 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
499 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 500 }
c8965800 501 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
502 int64_t start, end;
503
504 // this is so that seeking on a streamed file can work.
505 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
506 s->start_time = start;
507 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
508 s->duration = (end == AV_NOPTS_VALUE) ?
509 AV_NOPTS_VALUE : end - start;
119b4668
RB
510 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
511 if (atoi(p) == 1)
512 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
513 } else {
514 if (rt->server_type == RTSP_SERVER_WMS)
515 ff_wms_parse_sdp_a_line(s, p);
516 if (s->nb_streams > 0) {
c4a3d032
RB
517 if (rt->server_type == RTSP_SERVER_REAL)
518 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
519
520 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
521 if (rtsp_st->dynamic_handler &&
522 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
523 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
524 s->nb_streams - 1,
c4a3d032 525 rtsp_st->dynamic_protocol_context, buf);
1a30d541 526 }
1617ad97
FB
527 }
528 break;
529 }
530}
531
5c91a675 532static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
533{
534 const char *p;
535 int letter;
9211bcdd
RB
536 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
537 * contain long SDP lines containing complete ASF Headers (several
538 * kB) or arrays of MDPR (RM stream descriptor) headers plus
539 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
540 * buffer is large.
541 *
afcea58c
JA
542 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
543 * in rtpdec_xiph.c. */
373afbaf 544 char buf[16384], *q;
93ced3e8 545 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 546
93ced3e8 547 memset(s1, 0, sizeof(SDPParseState));
1617ad97 548 p = content;
c8965800 549 for (;;) {
1617ad97
FB
550 skip_spaces(&p);
551 letter = *p;
552 if (letter == '\0')
553 break;
554 p++;
555 if (*p != '=')
556 goto next_line;
557 p++;
558 /* get the content */
559 q = buf;
b6892136 560 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
561 if ((q - buf) < sizeof(buf) - 1)
562 *q++ = *p;
563 p++;
564 }
565 *q = '\0';
93ced3e8 566 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
567 next_line:
568 while (*p != '\n' && *p != '\0')
569 p++;
570 if (*p == '\n')
571 p++;
572 }
573 return 0;
574}
575
1ced9da3 576/* close and free RTSP streams */
3307e6ea 577void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 578{
52aa4338 579 RTSPState *rt = s->priv_data;
1ced9da3
LA
580 int i;
581 RTSPStream *rtsp_st;
582
c8965800 583 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
584 rtsp_st = rt->rtsp_streams[i];
585 if (rtsp_st) {
586 if (rtsp_st->transport_priv) {
fd450a51
MS
587 if (s->oformat) {
588 AVFormatContext *rtpctx = rtsp_st->transport_priv;
589 av_write_trailer(rtpctx);
b7dc88fc
MS
590 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
591 uint8_t *ptr;
592 url_close_dyn_buf(rtpctx->pb, &ptr);
593 av_free(ptr);
594 } else {
685e76b5 595 url_fclose(rtpctx->pb);
b7dc88fc 596 }
f86f6656
MS
597 av_metadata_free(&rtpctx->streams[0]->metadata);
598 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
599 av_free(rtpctx->streams[0]);
600 av_free(rtpctx);
601 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
602 ff_rdt_parse_close(rtsp_st->transport_priv);
603 else
604 rtp_parse_close(rtsp_st->transport_priv);
605 }
606 if (rtsp_st->rtp_handle)
607 url_close(rtsp_st->rtp_handle);
608 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
609 rtsp_st->dynamic_handler->close(
610 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
611 }
612 }
613 av_free(rt->rtsp_streams);
614 if (rt->asf_ctx) {
615 av_close_input_stream (rt->asf_ctx);
616 rt->asf_ctx = NULL;
617 }
1ced9da3
LA
618}
619
5c7fd910
MS
620static void *rtsp_rtp_mux_open(AVFormatContext *s, AVStream *st,
621 URLContext *handle)
622{
c07c6f81 623 RTSPState *rt = s->priv_data;
fd450a51
MS
624 AVFormatContext *rtpctx;
625 int ret;
626 AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
627
628 if (!rtp_format)
629 return NULL;
630
631 /* Allocate an AVFormatContext for each output stream */
632 rtpctx = avformat_alloc_context();
633 if (!rtpctx)
634 return NULL;
635
636 rtpctx->oformat = rtp_format;
637 if (!av_new_stream(rtpctx, 0)) {
638 av_free(rtpctx);
639 return NULL;
640 }
641 /* Copy the max delay setting; the rtp muxer reads this. */
642 rtpctx->max_delay = s->max_delay;
643 /* Copy other stream parameters. */
644 rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
645
c07c6f81
MS
646 /* Set the synchronized start time. */
647 rtpctx->start_time_realtime = rt->start_time;
648
fd450a51
MS
649 /* Remove the local codec, link to the original codec
650 * context instead, to give the rtp muxer access to
651 * codec parameters. */
652 av_free(rtpctx->streams[0]->codec);
653 rtpctx->streams[0]->codec = st->codec;
654
b7dc88fc 655 if (handle) {
685e76b5 656 url_fdopen(&rtpctx->pb, handle);
b7dc88fc
MS
657 } else
658 url_open_dyn_packet_buf(&rtpctx->pb, RTSP_TCP_MAX_PACKET_SIZE);
fd450a51
MS
659 ret = av_write_header(rtpctx);
660
661 if (ret) {
b7dc88fc 662 if (handle) {
685e76b5 663 url_fclose(rtpctx->pb);
b7dc88fc
MS
664 } else {
665 uint8_t *ptr;
666 url_close_dyn_buf(rtpctx->pb, &ptr);
667 av_free(ptr);
668 }
fd450a51
MS
669 av_free(rtpctx->streams[0]);
670 av_free(rtpctx);
671 return NULL;
672 }
673
674 /* Copy the RTP AVStream timebase back to the original AVStream */
675 st->time_base = rtpctx->streams[0]->time_base;
676 return rtpctx;
677}
678
c8965800 679static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
680{
681 RTSPState *rt = s->priv_data;
682 AVStream *st = NULL;
683
684 /* open the RTP context */
685 if (rtsp_st->stream_index >= 0)
686 st = s->streams[rtsp_st->stream_index];
687 if (!st)
688 s->ctx_flags |= AVFMTCTX_NOHEADER;
689
fd450a51
MS
690 if (s->oformat) {
691 rtsp_st->transport_priv = rtsp_rtp_mux_open(s, st, rtsp_st->rtp_handle);
c2bfd816 692 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51
MS
693 rtsp_st->rtp_handle = NULL;
694 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
695 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
696 rtsp_st->dynamic_protocol_context,
697 rtsp_st->dynamic_handler);
698 else
699 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
700 rtsp_st->sdp_payload_type,
701 &rtsp_st->rtp_payload_data);
702
703 if (!rtsp_st->transport_priv) {
704 return AVERROR(ENOMEM);
705 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
c8965800 706 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
707 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
708 rtsp_st->dynamic_protocol_context,
709 rtsp_st->dynamic_handler);
710 }
711 }
712
713 return 0;
714}
715
6f5a3d0a 716#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1ced9da3
LA
717static int rtsp_probe(AVProbeData *p)
718{
719 if (av_strstart(p->filename, "rtsp:", NULL))
720 return AVPROBE_SCORE_MAX;
721 return 0;
722}
723
1617ad97
FB
724static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
725{
726 const char *p;
727 int v;
728
729 p = *pp;
730 skip_spaces(&p);
731 v = strtol(p, (char **)&p, 10);
732 if (*p == '-') {
733 p++;
734 *min_ptr = v;
735 v = strtol(p, (char **)&p, 10);
736 *max_ptr = v;
737 } else {
738 *min_ptr = v;
739 *max_ptr = v;
740 }
741 *pp = p;
742}
743
744/* XXX: only one transport specification is parsed */
a9e534d5 745static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
746{
747 char transport_protocol[16];
748 char profile[16];
749 char lower_transport[16];
750 char parameter[16];
751 RTSPTransportField *th;
752 char buf[256];
115329f1 753
1617ad97 754 reply->nb_transports = 0;
115329f1 755
c8965800 756 for (;;) {
1617ad97
FB
757 skip_spaces(&p);
758 if (*p == '\0')
759 break;
760
761 th = &reply->transports[reply->nb_transports];
762
115329f1 763 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 764 "/", &p);
e1502118 765 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
766 get_word_sep(profile, sizeof(profile), "/;,", &p);
767 lower_transport[0] = '\0';
768 /* rtp/avp/<protocol> */
769 if (*p == '/') {
7ecc634e
LB
770 get_word_sep(lower_transport, sizeof(lower_transport),
771 ";,", &p);
119b4668
RB
772 }
773 th->transport = RTSP_TRANSPORT_RTP;
774 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
775 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 776 /* x-pn-tng/<protocol> */
e1502118
LB
777 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
778 profile[0] = '\0';
119b4668 779 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 780 }
b6892136 781 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 782 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 783 else
90abbdba 784 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 785
1617ad97
FB
786 if (*p == ';')
787 p++;
788 /* get each parameter */
789 while (*p != '\0' && *p != ',') {
790 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
791 if (!strcmp(parameter, "port")) {
792 if (*p == '=') {
793 p++;
794 rtsp_parse_range(&th->port_min, &th->port_max, &p);
795 }
796 } else if (!strcmp(parameter, "client_port")) {
797 if (*p == '=') {
798 p++;
115329f1 799 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
800 &th->client_port_max, &p);
801 }
802 } else if (!strcmp(parameter, "server_port")) {
803 if (*p == '=') {
804 p++;
115329f1 805 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
806 &th->server_port_max, &p);
807 }
808 } else if (!strcmp(parameter, "interleaved")) {
809 if (*p == '=') {
810 p++;
115329f1 811 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
812 &th->interleaved_max, &p);
813 }
814 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
815 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
816 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
817 } else if (!strcmp(parameter, "ttl")) {
818 if (*p == '=') {
819 p++;
820 th->ttl = strtol(p, (char **)&p, 10);
821 }
822 } else if (!strcmp(parameter, "destination")) {
823 struct in_addr ipaddr;
824
825 if (*p == '=') {
826 p++;
827 get_word_sep(buf, sizeof(buf), ";,", &p);
ac11d562 828 if (ff_inet_aton(buf, &ipaddr))
1617ad97
FB
829 th->destination = ntohl(ipaddr.s_addr);
830 }
831 }
832 while (*p != ';' && *p != '\0' && *p != ',')
833 p++;
834 if (*p == ';')
835 p++;
836 }
837 if (*p == ',')
838 p++;
839
840 reply->nb_transports++;
841 }
842}
843
2626308a
MS
844void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
845 HTTPAuthState *auth_state)
1617ad97
FB
846{
847 const char *p;
848
849 /* NOTE: we do case independent match for broken servers */
850 p = buf;
f7d78f36 851 if (av_stristart(p, "Session:", &p)) {
30e79845 852 int t;
1617ad97 853 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
854 if (av_stristart(p, ";timeout=", &p) &&
855 (t = strtol(p, NULL, 10)) > 0) {
856 reply->timeout = t;
857 }
f7d78f36 858 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 859 reply->content_length = strtol(p, NULL, 10);
f7d78f36 860 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 861 rtsp_parse_transport(reply, p);
f7d78f36 862 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 863 reply->seq = strtol(p, NULL, 10);
f7d78f36 864 } else if (av_stristart(p, "Range:", &p)) {
31693e00 865 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
866 } else if (av_stristart(p, "RealChallenge1:", &p)) {
867 skip_spaces(&p);
868 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
869 } else if (av_stristart(p, "Server:", &p)) {
870 skip_spaces(&p);
871 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
872 } else if (av_stristart(p, "Notice:", &p) ||
873 av_stristart(p, "X-Notice:", &p)) {
874 reply->notice = strtol(p, NULL, 10);
d243ba30
LB
875 } else if (av_stristart(p, "Location:", &p)) {
876 skip_spaces(&p);
877 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a
MS
878 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
879 skip_spaces(&p);
880 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
881 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
882 skip_spaces(&p);
883 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
1617ad97
FB
884 }
885}
886
b7b8fc34 887/* skip a RTP/TCP interleaved packet */
ec55edba 888void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
889{
890 RTSPState *rt = s->priv_data;
891 int ret, len, len1;
892 uint8_t buf[1024];
893
0e848977 894 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
895 if (ret != 3)
896 return;
80fb8234 897 len = AV_RB16(buf + 1);
67c9cd69
BC
898
899 dprintf(s, "skipping RTP packet len=%d\n", len);
900
b7b8fc34
FB
901 /* skip payload */
902 while (len > 0) {
903 len1 = len;
904 if (len1 > sizeof(buf))
905 len1 = sizeof(buf);
0e848977 906 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
907 if (ret != len1)
908 return;
909 len -= len1;
910 }
911}
1617ad97 912
3307e6ea 913int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
914 unsigned char **content_ptr,
915 int return_on_interleaved_data)
1617ad97
FB
916{
917 RTSPState *rt = s->priv_data;
918 char buf[4096], buf1[1024], *q;
919 unsigned char ch;
920 const char *p;
7e726132 921 int ret, content_length, line_count = 0;
1617ad97
FB
922 unsigned char *content = NULL;
923
d541a7d2 924 memset(reply, 0, sizeof(*reply));
1617ad97 925
1617ad97 926 /* parse reply (XXX: use buffers) */
1617ad97 927 rt->last_reply[0] = '\0';
c8965800 928 for (;;) {
1617ad97 929 q = buf;
c8965800 930 for (;;) {
0e848977 931 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 932#ifdef DEBUG_RTP_TCP
67c9cd69 933 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
934#endif
935 if (ret != 1)
936 return -1;
1617ad97
FB
937 if (ch == '\n')
938 break;
b7b8fc34
FB
939 if (ch == '$') {
940 /* XXX: only parse it if first char on line ? */
7e726132
RB
941 if (return_on_interleaved_data) {
942 return 1;
943 } else
ec55edba 944 ff_rtsp_skip_packet(s);
b7b8fc34 945 } else if (ch != '\r') {
1617ad97
FB
946 if ((q - buf) < sizeof(buf) - 1)
947 *q++ = ch;
948 }
949 }
950 *q = '\0';
67c9cd69
BC
951
952 dprintf(s, "line='%s'\n", buf);
953
1617ad97
FB
954 /* test if last line */
955 if (buf[0] == '\0')
956 break;
957 p = buf;
958 if (line_count == 0) {
959 /* get reply code */
960 get_word(buf1, sizeof(buf1), &p);
961 get_word(buf1, sizeof(buf1), &p);
962 reply->status_code = atoi(buf1);
963 } else {
2626308a 964 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
965 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
966 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
967 }
968 line_count++;
969 }
115329f1 970
1617ad97 971 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 972 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 973
1617ad97
FB
974 content_length = reply->content_length;
975 if (content_length > 0) {
976 /* leave some room for a trailing '\0' (useful for simple parsing) */
977 content = av_malloc(content_length + 1);
0e848977 978 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
979 content[content_length] = '\0';
980 }
981 if (content_ptr)
982 *content_ptr = content;
e2e2e7dd
AB
983 else
984 av_free(content);
7e726132 985
7ed8211b
LB
986 if (rt->seq != reply->seq) {
987 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
988 rt->seq, reply->seq);
989 }
990
fccb1770
RB
991 /* EOS */
992 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
993 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 994 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 995 rt->state = RTSP_STATE_IDLE;
c8965800 996 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 997 return AVERROR(EIO); /* data or server error */
c8965800 998 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
999 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1000 return AVERROR(EPERM);
1001
7e726132 1002 return 0;
1617ad97
FB
1003}
1004
d0382374 1005int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
1006 const char *method, const char *url,
1007 const char *headers,
1008 const unsigned char *send_content,
1009 int send_content_length)
29b9f58b
RB
1010{
1011 RTSPState *rt = s->priv_data;
f5d33f52
JA
1012 char buf[4096], *out_buf;
1013 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1014
f5d33f52
JA
1015 /* Add in RTSP headers */
1016 out_buf = buf;
29b9f58b 1017 rt->seq++;
b17d11c6
MS
1018 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1019 if (headers)
1020 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1021 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1022 if (rt->session_id[0] != '\0' && (!headers ||
1023 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1024 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1025 }
aa8bf2fb
MS
1026 if (rt->auth[0]) {
1027 char *str = ff_http_auth_create_response(&rt->auth_state,
1028 rt->auth, url, method);
1029 if (str)
1030 av_strlcat(buf, str, sizeof(buf));
1031 av_free(str);
1032 }
dfd017bf
MS
1033 if (send_content_length > 0 && send_content)
1034 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1035 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1036
f5d33f52
JA
1037 /* base64 encode rtsp if tunneling */
1038 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1039 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1040 out_buf = base64buf;
1041 }
1042
67c9cd69
BC
1043 dprintf(s, "Sending:\n%s--\n", buf);
1044
f5d33f52
JA
1045 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
1046 if (send_content_length > 0 && send_content) {
1047 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1048 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1049 "with content data not supported\n");
1050 return AVERROR_PATCHWELCOME;
1051 }
b8c2c41d 1052 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1053 }
30e79845 1054 rt->last_cmd_time = av_gettime();
d0382374
JA
1055
1056 return 0;
30e79845
RB
1057}
1058
d0382374 1059int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1060 const char *url, const char *headers)
dfd017bf 1061{
d0382374 1062 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1063}
1064
d0382374 1065int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1066 const char *headers, RTSPMessageHeader *reply,
1067 unsigned char **content_ptr)
30e79845 1068{
d0382374 1069 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1070 content_ptr, NULL, 0);
29b9f58b
RB
1071}
1072
d0382374 1073int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1074 const char *method, const char *url,
1075 const char *header,
1076 RTSPMessageHeader *reply,
1077 unsigned char **content_ptr,
1078 const unsigned char *send_content,
1079 int send_content_length)
dfd017bf 1080{
30af0779
MS
1081 RTSPState *rt = s->priv_data;
1082 HTTPAuthType cur_auth_type;
d0382374 1083 int ret;
30af0779
MS
1084
1085retry:
1086 cur_auth_type = rt->auth_state.auth_type;
d0382374 1087 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1088 send_content,
1089 send_content_length)))
d0382374 1090 return ret;
dfd017bf 1091
d0382374
JA
1092 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
1093 return ret;
30af0779
MS
1094
1095 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1096 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1097 goto retry;
d0382374
JA
1098
1099 return 0;
dfd017bf
MS
1100}
1101
53620bba 1102/**
32e543f8 1103 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 1104 */
c8965800
RB
1105static int make_setup_request(AVFormatContext *s, const char *host, int port,
1106 int lower_transport, const char *real_challenge)
1617ad97
FB
1107{
1108 RTSPState *rt = s->priv_data;
f830c9a4 1109 int rtx, j, i, err, interleave = 0;
1617ad97 1110 RTSPStream *rtsp_st;
a9e534d5 1111 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1112 char cmd[2048];
e9dea59f
RB
1113 const char *trans_pref;
1114
119b4668 1115 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1116 trans_pref = "x-pn-tng";
1117 else
1118 trans_pref = "RTP/AVP";
115329f1 1119
30e79845
RB
1120 /* default timeout: 1 minute */
1121 rt->timeout = 60;
1122
1617ad97
FB
1123 /* for each stream, make the setup request */
1124 /* XXX: we assume the same server is used for the control of each
c8965800 1125 * RTSP stream */
d1ccf0e0 1126
c8965800 1127 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1128 char transport[2048];
1129
f830c9a4
RB
1130 /**
1131 * WMS serves all UDP data over a single connection, the RTX, which
1132 * isn't necessarily the first in the SDP but has to be the first
1133 * to be set up, else the second/third SETUP will fail with a 461.
1134 */
1135 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1136 rt->server_type == RTSP_SERVER_WMS) {
1137 if (i == 0) {
1138 /* rtx first */
1139 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1140 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1141 if (len >= 4 &&
c8965800
RB
1142 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1143 "/rtx"))
f830c9a4
RB
1144 break;
1145 }
1146 if (rtx == rt->nb_rtsp_streams)
1147 return -1; /* no RTX found */
1148 rtsp_st = rt->rtsp_streams[rtx];
1149 } else
1150 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1151 } else
2fea9650 1152 rtsp_st = rt->rtsp_streams[i];
1617ad97 1153
1617ad97 1154 /* RTP/UDP */
90abbdba 1155 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1156 char buf[256];
85fb7b34 1157
f830c9a4
RB
1158 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1159 port = reply->transports[0].client_port_min;
1160 goto have_port;
1161 }
1162
85fb7b34 1163 /* first try in specified port range */
d1ccf0e0 1164 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1165 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1166 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1167 "?localport=%d", j);
c8965800
RB
1168 /* we will use two ports per rtp stream (rtp and rtcp) */
1169 j += 2;
1170 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1171 goto rtp_opened;
1172 }
1617ad97 1173 }
85fb7b34 1174
c8965800
RB
1175#if 0
1176 /* then try on any port */
1177 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1178 err = AVERROR_INVALIDDATA;
1179 goto fail;
1180 }
1181#endif
85fb7b34
FB
1182
1183 rtp_opened:
8b1ab7bf 1184 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1185 have_port:
0ad306bc 1186 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1187 "%s/UDP;", trans_pref);
1188 if (rt->server_type != RTSP_SERVER_REAL)
1189 av_strlcat(transport, "unicast;", sizeof(transport));
1190 av_strlcatf(transport, sizeof(transport),
1191 "client_port=%d", port);
f830c9a4
RB
1192 if (rt->transport == RTSP_TRANSPORT_RTP &&
1193 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1194 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1195 }
1196
1197 /* RTP/TCP */
90abbdba 1198 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1199 /** For WMS streams, the application streams are only used for
1200 * UDP. When trying to set it up for TCP streams, the server
1201 * will return an error. Therefore, we skip those streams. */
1202 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1203 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1204 AVMEDIA_TYPE_DATA)
090438cc 1205 continue;
0ad306bc 1206 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1207 "%s/TCP;", trans_pref);
1208 if (rt->server_type == RTSP_SERVER_WMS)
1209 av_strlcat(transport, "unicast;", sizeof(transport));
1210 av_strlcatf(transport, sizeof(transport),
1211 "interleaved=%d-%d",
1212 interleave, interleave + 1);
1213 interleave += 2;
1617ad97
FB
1214 }
1215
90abbdba 1216 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1217 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1218 "%s/UDP;multicast", trans_pref);
1617ad97 1219 }
69adcc4f
MS
1220 if (s->oformat) {
1221 av_strlcat(transport, ";mode=receive", sizeof(transport));
1222 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1223 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1224 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1225 snprintf(cmd, sizeof(cmd),
b6892136 1226 "Transport: %s\r\n",
b17d11c6 1227 transport);
2e889ae4 1228 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1229 char real_res[41], real_csum[9];
1230 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1231 real_challenge);
1232 av_strlcatf(cmd, sizeof(cmd),
1233 "If-Match: %s\r\n"
1234 "RealChallenge2: %s, sd=%s\r\n",
1235 rt->session_id, real_res, real_csum);
1236 }
b17d11c6 1237 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1238 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1239 err = 1;
1240 goto fail;
7e6ca34f
RB
1241 } else if (reply->status_code != RTSP_STATUS_OK ||
1242 reply->nb_transports != 1) {
1617ad97
FB
1243 err = AVERROR_INVALIDDATA;
1244 goto fail;
1245 }
1246
1247 /* XXX: same protocol for all streams is required */
1248 if (i > 0) {
119b4668
RB
1249 if (reply->transports[0].lower_transport != rt->lower_transport ||
1250 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1251 err = AVERROR_INVALIDDATA;
1252 goto fail;
1253 }
1254 } else {
90abbdba 1255 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1256 rt->transport = reply->transports[0].transport;
1617ad97
FB
1257 }
1258
1259 /* close RTP connection if not choosen */
90abbdba
RB
1260 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1261 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1262 url_close(rtsp_st->rtp_handle);
1263 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1264 }
1265
90abbdba
RB
1266 switch(reply->transports[0].lower_transport) {
1267 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1268 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1269 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1270 break;
115329f1 1271
c8965800
RB
1272 case RTSP_LOWER_TRANSPORT_UDP: {
1273 char url[1024];
1274
1275 /* XXX: also use address if specified */
57b5555c
MS
1276 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1277 reply->transports[0].server_port_min, NULL);
c8965800
RB
1278 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1279 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1280 err = AVERROR_INVALIDDATA;
1281 goto fail;
1617ad97 1282 }
9c8fa20d
MS
1283 /* Try to initialize the connection state in a
1284 * potential NAT router by sending dummy packets.
1285 * RTP/RTCP dummy packets are used for RDT, too.
1286 */
30ff7c5c 1287 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat)
9c8fa20d 1288 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1289 break;
c8965800
RB
1290 }
1291 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1292 char url[1024];
1293 struct in_addr in;
1294 int port, ttl;
1295
1296 if (reply->transports[0].destination) {
1297 in.s_addr = htonl(reply->transports[0].destination);
1298 port = reply->transports[0].port_min;
1299 ttl = reply->transports[0].ttl;
1300 } else {
1301 in = rtsp_st->sdp_ip;
1302 port = rtsp_st->sdp_port;
1303 ttl = rtsp_st->sdp_ttl;
1304 }
57b5555c
MS
1305 ff_url_join(url, sizeof(url), "rtp", NULL, inet_ntoa(in),
1306 port, "?ttl=%d", ttl);
c8965800
RB
1307 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1308 err = AVERROR_INVALIDDATA;
1309 goto fail;
1617ad97
FB
1310 }
1311 break;
1312 }
c8965800 1313 }
d1ccf0e0 1314
ee0cb67f 1315 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1316 goto fail;
1617ad97
FB
1317 }
1318
30e79845
RB
1319 if (reply->timeout > 0)
1320 rt->timeout = reply->timeout;
1321
2e889ae4 1322 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1323 rt->need_subscription = 1;
1324
53620bba
RB
1325 return 0;
1326
1327fail:
c8965800 1328 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1329 if (rt->rtsp_streams[i]->rtp_handle) {
1330 url_close(rt->rtsp_streams[i]->rtp_handle);
1331 rt->rtsp_streams[i]->rtp_handle = NULL;
1332 }
1333 }
53620bba
RB
1334 return err;
1335}
1336
1ced9da3
LA
1337static int rtsp_read_play(AVFormatContext *s)
1338{
1339 RTSPState *rt = s->priv_data;
1340 RTSPMessageHeader reply1, *reply = &reply1;
5948f822 1341 int i;
1ced9da3
LA
1342 char cmd[1024];
1343
1344 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
1345
1346 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1347 if (rt->state == RTSP_STATE_PAUSED) {
b17d11c6 1348 cmd[0] = 0;
1ced9da3
LA
1349 } else {
1350 snprintf(cmd, sizeof(cmd),
1ced9da3 1351 "Range: npt=%0.3f-\r\n",
1ced9da3
LA
1352 (double)rt->seek_timestamp / AV_TIME_BASE);
1353 }
b17d11c6 1354 ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
1ced9da3
LA
1355 if (reply->status_code != RTSP_STATUS_OK) {
1356 return -1;
1357 }
5948f822
MS
1358 if (reply->range_start != AV_NOPTS_VALUE &&
1359 rt->transport == RTSP_TRANSPORT_RTP) {
1360 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1361 RTSPStream *rtsp_st = rt->rtsp_streams[i];
1362 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1363 AVStream *st = NULL;
8d168a92
MS
1364 if (!rtpctx)
1365 continue;
5948f822
MS
1366 if (rtsp_st->stream_index >= 0)
1367 st = s->streams[rtsp_st->stream_index];
1368 rtpctx->last_rtcp_ntp_time = AV_NOPTS_VALUE;
1369 rtpctx->first_rtcp_ntp_time = AV_NOPTS_VALUE;
1370 if (st)
1371 rtpctx->range_start_offset = av_rescale_q(reply->range_start,
1372 AV_TIME_BASE_Q,
1373 st->time_base);
1374 }
1375 }
1ced9da3 1376 }
c02fd3d2 1377 rt->state = RTSP_STATE_STREAMING;
1ced9da3
LA
1378 return 0;
1379}
1380
6e69f6c4 1381static int rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
e23d195d
MS
1382{
1383 RTSPState *rt = s->priv_data;
e23d195d
MS
1384 char cmd[1024];
1385 unsigned char *content = NULL;
1386 int ret;
1387
1388 /* describe the stream */
1389 snprintf(cmd, sizeof(cmd),
b17d11c6 1390 "Accept: application/sdp\r\n");
e23d195d
MS
1391 if (rt->server_type == RTSP_SERVER_REAL) {
1392 /**
1393 * The Require: attribute is needed for proper streaming from
1394 * Realmedia servers.
1395 */
1396 av_strlcat(cmd,
1397 "Require: com.real.retain-entity-for-setup\r\n",
1398 sizeof(cmd));
1399 }
b17d11c6 1400 ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
e23d195d
MS
1401 if (!content)
1402 return AVERROR_INVALIDDATA;
1403 if (reply->status_code != RTSP_STATUS_OK) {
1404 av_freep(&content);
1405 return AVERROR_INVALIDDATA;
1406 }
1407
1408 /* now we got the SDP description, we parse it */
1409 ret = sdp_parse(s, (const char *)content);
1410 av_freep(&content);
1411 if (ret < 0)
1412 return AVERROR_INVALIDDATA;
1413
1414 return 0;
1415}
1416
26cb700c 1417static int rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
3e24c770
MS
1418{
1419 RTSPState *rt = s->priv_data;
1420 RTSPMessageHeader reply1, *reply = &reply1;
3e24c770
MS
1421 int i;
1422 char *sdp;
26cb700c 1423 AVFormatContext sdp_ctx, *ctx_array[1];
c07c6f81
MS
1424
1425 rt->start_time = av_gettime();
3e24c770
MS
1426
1427 /* Announce the stream */
3e24c770
MS
1428 sdp = av_mallocz(8192);
1429 if (sdp == NULL)
1430 return AVERROR(ENOMEM);
26cb700c
MS
1431 /* We create the SDP based on the RTSP AVFormatContext where we
1432 * aren't allowed to change the filename field. (We create the SDP
1433 * based on the RTSP context since the contexts for the RTP streams
1434 * don't exist yet.) In order to specify a custom URL with the actual
1435 * peer IP instead of the originally specified hostname, we create
1436 * a temporary copy of the AVFormatContext, where the custom URL is set.
1437 *
1438 * FIXME: Create the SDP without copying the AVFormatContext.
1439 * This either requires setting up the RTP stream AVFormatContexts
1440 * already here (complicating things immensely) or getting a more
1441 * flexible SDP creation interface.
1442 */
1443 sdp_ctx = *s;
1444 ff_url_join(sdp_ctx.filename, sizeof(sdp_ctx.filename),
1445 "rtsp", NULL, addr, -1, NULL);
1446 ctx_array[0] = &sdp_ctx;
1447 if (avf_sdp_create(ctx_array, 1, sdp, 8192)) {
3e24c770
MS
1448 av_free(sdp);
1449 return AVERROR_INVALIDDATA;
1450 }
1451 av_log(s, AV_LOG_INFO, "SDP:\n%s\n", sdp);
b17d11c6
MS
1452 ff_rtsp_send_cmd_with_content(s, "ANNOUNCE", rt->control_uri,
1453 "Content-Type: application/sdp\r\n",
1454 reply, NULL, sdp, strlen(sdp));
3e24c770
MS
1455 av_free(sdp);
1456 if (reply->status_code != RTSP_STATUS_OK)
1457 return AVERROR_INVALIDDATA;
1458
1459 /* Set up the RTSPStreams for each AVStream */
1460 for (i = 0; i < s->nb_streams; i++) {
1461 RTSPStream *rtsp_st;
1462 AVStream *st = s->streams[i];
1463
1464 rtsp_st = av_mallocz(sizeof(RTSPStream));
1465 if (!rtsp_st)
1466 return AVERROR(ENOMEM);
1467 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
1468
1469 st->priv_data = rtsp_st;
1470 rtsp_st->stream_index = i;
1471
db76ca7f 1472 av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));
3e24c770
MS
1473 /* Note, this must match the relative uri set in the sdp content */
1474 av_strlcatf(rtsp_st->control_url, sizeof(rtsp_st->control_url),
1475 "/streamid=%d", i);
1476 }
1477
1478 return 0;
1479}
1480
b8c2c41d
JA
1481void ff_rtsp_close_connections(AVFormatContext *s)
1482{
1483 RTSPState *rt = s->priv_data;
1484 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1485 url_close(rt->rtsp_hd);
1486}
1487
3307e6ea 1488int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1489{
1490 RTSPState *rt = s->priv_data;
921da217
LB
1491 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1492 char *option_list, *option, *filename;
b8c2c41d 1493 URLContext *rtsp_hd, *rtsp_hd_out;
03f8fc08 1494 int port, err, tcp_fd;
3370289a 1495 RTSPMessageHeader reply1 = {}, *reply = &reply1;
90abbdba 1496 int lower_transport_mask = 0;
1cf151e9 1497 char real_challenge[64];
03f8fc08
MS
1498 struct sockaddr_storage peer;
1499 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1500
1501 if (!ff_network_init())
1502 return AVERROR(EIO);
c8965800 1503redirect:
f5d33f52 1504 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1505 /* extract hostname and port */
c5c6e67c 1506 ff_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1507 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1508 if (*auth) {
aa8bf2fb 1509 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1510 }
53620bba
RB
1511 if (port < 0)
1512 port = RTSP_DEFAULT_PORT;
1513
1514 /* search for options */
602eb779 1515 option_list = strrchr(path, '?');
53620bba 1516 if (option_list) {
2a21adf9
MS
1517 /* Strip out the RTSP specific options, write out the rest of
1518 * the options back into the same string. */
1519 filename = option_list;
c8965800 1520 while (option_list) {
53620bba 1521 /* move the option pointer */
921da217 1522 option = ++option_list;
53620bba
RB
1523 option_list = strchr(option_list, '&');
1524 if (option_list)
921da217
LB
1525 *option_list = 0;
1526
53620bba 1527 /* handle the options */
c8965800 1528 if (!strcmp(option, "udp")) {
7a033e08 1529 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1530 } else if (!strcmp(option, "multicast")) {
7a033e08 1531 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1532 } else if (!strcmp(option, "tcp")) {
7a033e08 1533 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1534 } else if(!strcmp(option, "http")) {
1535 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1536 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1537 } else {
2a21adf9
MS
1538 /* Write options back into the buffer, using memmove instead
1539 * of strcpy since the strings may overlap. */
1540 int len = strlen(option);
1541 memmove(++filename, option, len);
1542 filename += len;
921da217
LB
1543 if (option_list) *filename = '&';
1544 }
53620bba 1545 }
921da217 1546 *filename = 0;
53620bba
RB
1547 }
1548
90abbdba 1549 if (!lower_transport_mask)
2a1d51c5 1550 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1551
3e24c770 1552 if (s->oformat) {
b7dc88fc
MS
1553 /* Only UDP or TCP - UDP multicast isn't supported. */
1554 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1555 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1556 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1557 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1558 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1559 err = AVERROR(EINVAL);
1560 goto fail;
1561 }
1562 }
1563
4bc5cc23
MS
1564 /* Construct the URI used in request; this is similar to s->filename,
1565 * but with authentication credentials removed and RTSP specific options
1566 * stripped out. */
1567 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1568 host, port, "%s", path);
1569
f5d33f52
JA
1570 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1571 /* set up initial handshake for tunneling */
1572 char httpname[1024];
1573 char sessioncookie[17];
1574 char headers[1024];
1575
1576 ff_url_join(httpname, sizeof(httpname), "http", NULL, host, port, "%s", path);
1577 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1578 av_get_random_seed(), av_get_random_seed());
1579
1580 /* GET requests */
1581 if (url_open(&rtsp_hd, httpname, URL_RDONLY) < 0) {
1582 err = AVERROR(EIO);
1583 goto fail;
1584 }
1585
1586 /* generate GET headers */
1587 snprintf(headers, sizeof(headers),
1588 "x-sessioncookie: %s\r\n"
1589 "Accept: application/x-rtsp-tunnelled\r\n"
1590 "Pragma: no-cache\r\n"
1591 "Cache-Control: no-cache\r\n",
1592 sessioncookie);
1593 ff_http_set_headers(rtsp_hd, headers);
1594
1595 /* complete the connection */
1596 if (url_read(rtsp_hd, NULL, 0)) {
d3f84dfc 1597 url_close(rtsp_hd);
f5d33f52
JA
1598 err = AVERROR(EIO);
1599 goto fail;
1600 }
1601
1602 /* POST requests */
1603 if (url_open(&rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
d3f84dfc 1604 url_close(rtsp_hd);
f5d33f52
JA
1605 err = AVERROR(EIO);
1606 goto fail;
1607 }
1608
1609 /* generate POST headers */
1610 snprintf(headers, sizeof(headers),
1611 "x-sessioncookie: %s\r\n"
1612 "Content-Type: application/x-rtsp-tunnelled\r\n"
1613 "Pragma: no-cache\r\n"
1614 "Cache-Control: no-cache\r\n"
1615 "Content-Length: 32767\r\n"
1616 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1617 sessioncookie);
1618 ff_http_set_headers(rtsp_hd_out, headers);
1619 ff_http_set_chunked_transfer_encoding(rtsp_hd_out, 0);
1620
1621 } else {
48e77473 1622 /* open the tcp connection */
41874d0a
JA
1623 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
1624 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) {
1625 err = AVERROR(EIO);
1626 goto fail;
1627 }
1628 rtsp_hd_out = rtsp_hd;
f5d33f52 1629 }
53620bba 1630 rt->rtsp_hd = rtsp_hd;
b8c2c41d 1631 rt->rtsp_hd_out = rtsp_hd_out;
53620bba
RB
1632 rt->seq = 0;
1633
03f8fc08
MS
1634 tcp_fd = url_get_file_handle(rtsp_hd);
1635 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1636 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1637 NULL, 0, NI_NUMERICHOST);
1638 }
1639
c8965800
RB
1640 /* request options supported by the server; this also detects server
1641 * type */
1cf151e9 1642 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1643 cmd[0] = 0;
2e889ae4 1644 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1645 av_strlcat(cmd,
1646 /**
1647 * The following entries are required for proper
1648 * streaming from a Realmedia server. They are
1649 * interdependent in some way although we currently
1650 * don't quite understand how. Values were copied
1651 * from mplayer SVN r23589.
1652 * @param CompanyID is a 16-byte ID in base64
1653 * @param ClientChallenge is a 16-byte ID in hex
1654 */
1655 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1656 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1657 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1658 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1659 sizeof(cmd));
b17d11c6 1660 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1661 if (reply->status_code != RTSP_STATUS_OK) {
1662 err = AVERROR_INVALIDDATA;
1663 goto fail;
1664 }
1665
1666 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1667 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1668 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1669 continue;
7a86bafa
RB
1670 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1671 rt->server_type = RTSP_SERVER_WMS;
c8965800 1672 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1673 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1674 break;
1675 }
1676
3e24c770 1677 if (s->iformat)
6e69f6c4 1678 err = rtsp_setup_input_streams(s, reply);
3e24c770 1679 else
26cb700c 1680 err = rtsp_setup_output_streams(s, host);
e23d195d 1681 if (err)
53620bba 1682 goto fail;
53620bba 1683
8a8754d8 1684 do {
c8965800
RB
1685 int lower_transport = ff_log2_tab[lower_transport_mask &
1686 ~(lower_transport_mask - 1)];
8a8754d8 1687
90abbdba 1688 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1689 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1690 real_challenge : NULL);
8a8754d8 1691 if (err < 0)
7e6ca34f 1692 goto fail;
90abbdba
RB
1693 lower_transport_mask &= ~(1 << lower_transport);
1694 if (lower_transport_mask == 0 && err == 1) {
adef229e 1695 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1696 goto fail;
1697 }
1698 } while (err);
53620bba 1699
ff762d6e 1700 rt->state = RTSP_STATE_IDLE;
c8965800 1701 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1702 return 0;
1703 fail:
3307e6ea 1704 ff_rtsp_close_streams(s);
b8c2c41d 1705 ff_rtsp_close_connections(s);
35cfd646 1706 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1707 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1708 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1709 reply->status_code,
1710 s->filename);
1711 goto redirect;
1712 }
57b5555c 1713 ff_network_close();
1617ad97
FB
1714 return err;
1715}
6f5a3d0a 1716#endif
1617ad97 1717
6f5a3d0a 1718#if CONFIG_RTSP_DEMUXER
4280f9bb
MS
1719static int rtsp_read_header(AVFormatContext *s,
1720 AVFormatParameters *ap)
1721{
4280f9bb
MS
1722 int ret;
1723
3307e6ea 1724 ret = ff_rtsp_connect(s);
4280f9bb
MS
1725 if (ret)
1726 return ret;
1727
1728 if (ap->initial_pause) {
1729 /* do not start immediately */
1730 } else {
1731 if (rtsp_read_play(s) < 0) {
3307e6ea 1732 ff_rtsp_close_streams(s);
b8c2c41d 1733 ff_rtsp_close_connections(s);
4280f9bb
MS
1734 return AVERROR_INVALIDDATA;
1735 }
1736 }
1737
1738 return 0;
1739}
1740
0e59034e
RB
1741static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1742 uint8_t *buf, int buf_size)
1743{
1744 RTSPState *rt = s->priv_data;
1745 RTSPStream *rtsp_st;
1746 fd_set rfds;
9cba6f5f 1747 int fd, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1748 struct timeval tv;
1749
c8965800 1750 for (;;) {
0e59034e
RB
1751 if (url_interrupt_cb())
1752 return AVERROR(EINTR);
1753 FD_ZERO(&rfds);
1754 if (rt->rtsp_hd) {
1755 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1756 FD_SET(tcp_fd, &rfds);
1757 } else {
1758 fd_max = 0;
1759 tcp_fd = -1;
1760 }
c8965800 1761 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1762 rtsp_st = rt->rtsp_streams[i];
1763 if (rtsp_st->rtp_handle) {
1764 /* currently, we cannot probe RTCP handle because of
1765 * blocking restrictions */
1766 fd = url_get_file_handle(rtsp_st->rtp_handle);
1767 if (fd > fd_max)
1768 fd_max = fd;
1769 FD_SET(fd, &rfds);
1770 }
1771 }
1772 tv.tv_sec = 0;
9cba6f5f 1773 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1774 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1775 if (n > 0) {
9cba6f5f 1776 timeout_cnt = 0;
c8965800 1777 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1778 rtsp_st = rt->rtsp_streams[i];
1779 if (rtsp_st->rtp_handle) {
1780 fd = url_get_file_handle(rtsp_st->rtp_handle);
1781 if (FD_ISSET(fd, &rfds)) {
1782 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1783 if (ret > 0) {
1784 *prtsp_st = rtsp_st;
1785 return ret;
1786 }
1787 }
1788 }
1789 }
1790#if CONFIG_RTSP_DEMUXER
27000636 1791 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1792 RTSPMessageHeader reply;
1793
3032276b
MS
1794 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1795 if (ret < 0)
1796 return ret;
0e59034e 1797 /* XXX: parse message */
c02fd3d2 1798 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1799 return 0;
1800 }
1801#endif
9cba6f5f 1802 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1803 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1804 } else if (n < 0 && errno != EINTR)
1805 return AVERROR(errno);
0e59034e
RB
1806 }
1807}
1808
8b1ab7bf
FB
1809static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1810 uint8_t *buf, int buf_size)
1617ad97
FB
1811{
1812 RTSPState *rt = s->priv_data;
b6892136 1813 int id, len, i, ret;
1617ad97 1814 RTSPStream *rtsp_st;
1617ad97 1815
b6892136 1816#ifdef DEBUG_RTP_TCP
67c9cd69 1817 dprintf(s, "tcp_read_packet:\n");
b6892136 1818#endif
c8965800
RB
1819redo:
1820 for (;;) {
7e726132
RB
1821 RTSPMessageHeader reply;
1822
3307e6ea 1823 ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
7e726132 1824 if (ret == -1)
8b1ab7bf 1825 return -1;
7e726132 1826 if (ret == 1) /* received '$' */
1617ad97 1827 break;
7e726132 1828 /* XXX: parse message */
c02fd3d2 1829 if (rt->state != RTSP_STATE_STREAMING)
fccb1770 1830 return 0;
1617ad97 1831 }
0e848977 1832 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1833 if (ret != 3)
8b1ab7bf 1834 return -1;
c8965800 1835 id = buf[0];
80fb8234 1836 len = AV_RB16(buf + 1);
b6892136 1837#ifdef DEBUG_RTP_TCP
67c9cd69 1838 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1839#endif
8b1ab7bf 1840 if (len > buf_size || len < 12)
1617ad97
FB
1841 goto redo;
1842 /* get the data */
0e848977 1843 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1844 if (ret != len)
8b1ab7bf 1845 return -1;
985b05d3 1846 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1847 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1848 return -1;
115329f1 1849
1617ad97 1850 /* find the matching stream */
c8965800 1851 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1852 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1853 if (id >= rtsp_st->interleaved_min &&
1854 id <= rtsp_st->interleaved_max)
1617ad97
FB
1855 goto found;
1856 }
1857 goto redo;
c8965800 1858found:
8b1ab7bf
FB
1859 *prtsp_st = rtsp_st;
1860 return len;
1617ad97
FB
1861}
1862
0e59034e
RB
1863static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1864{
1865 RTSPState *rt = s->priv_data;
1866 int ret, len;
1867 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1868 RTSPStream *rtsp_st;
1869
1870 /* get next frames from the same RTP packet */
1871 if (rt->cur_transport_priv) {
c8965800 1872 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1873 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1874 } else
0e59034e
RB
1875 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1876 if (ret == 0) {
1877 rt->cur_transport_priv = NULL;
1878 return 0;
1879 } else if (ret == 1) {
1880 return 0;
c8965800 1881 } else
0e59034e 1882 rt->cur_transport_priv = NULL;
0e59034e
RB
1883 }
1884
1885 /* read next RTP packet */
1886 redo:
1887 switch(rt->lower_transport) {
1888 default:
1889#if CONFIG_RTSP_DEMUXER
1890 case RTSP_LOWER_TRANSPORT_TCP:
1891 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1892 break;
1893#endif
1894 case RTSP_LOWER_TRANSPORT_UDP:
1895 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1896 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1897 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1898 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1899 break;
1900 }
1901 if (len < 0)
1902 return len;
1903 if (len == 0)
1904 return AVERROR_EOF;
c8965800 1905 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1906 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48 1907 } else {
0e59034e 1908 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48
MS
1909 if (ret < 0) {
1910 /* Either bad packet, or a RTCP packet. Check if the
1911 * first_rtcp_ntp_time field was initialized. */
1912 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1913 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1914 /* first_rtcp_ntp_time has been initialized for this stream,
1915 * copy the same value to all other uninitialized streams,
1916 * in order to map their timestamp origin to the same ntp time
1917 * as this one. */
1918 int i;
1919 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1920 RTPDemuxContext *rtpctx2 = rtsp_st->transport_priv;
1921 if (rtpctx2 &&
1922 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE)
1923 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
1924 }
1925 }
1926 }
1927 }
0e59034e
RB
1928 if (ret < 0)
1929 goto redo;
c8965800 1930 if (ret == 1)
0e59034e
RB
1931 /* more packets may follow, so we save the RTP context */
1932 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1933
1934 return ret;
1935}
1936
c8965800 1937static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1938{
1939 RTSPState *rt = s->priv_data;
98713182 1940 int ret;
30e79845
RB
1941 RTSPMessageHeader reply1, *reply = &reply1;
1942 char cmd[1024];
8b1ab7bf 1943
572c6a38 1944 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1945 int i;
572c6a38 1946 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1947
572c6a38
RB
1948 for (i = 0; i < s->nb_streams; i++)
1949 cache[i] = s->streams[i]->discard;
1950
1951 if (!rt->need_subscription) {
1952 if (memcmp (cache, rt->real_setup_cache,
1953 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1954 snprintf(cmd, sizeof(cmd),
7eaa646f 1955 "Unsubscribe: %s\r\n",
b17d11c6
MS
1956 rt->last_subscription);
1957 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1958 cmd, reply, NULL);
572c6a38
RB
1959 if (reply->status_code != RTSP_STATUS_OK)
1960 return AVERROR_INVALIDDATA;
1961 rt->need_subscription = 1;
1962 }
1256d16b 1963 }
1256d16b 1964
572c6a38
RB
1965 if (rt->need_subscription) {
1966 int r, rule_nr, first = 1;
1967
1968 memcpy(rt->real_setup_cache, cache,
1969 sizeof(enum AVDiscard) * s->nb_streams);
1970 rt->last_subscription[0] = 0;
1971
1972 snprintf(cmd, sizeof(cmd),
b17d11c6 1973 "Subscribe: ");
572c6a38
RB
1974 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1975 rule_nr = 0;
1976 for (r = 0; r < s->nb_streams; r++) {
1977 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1978 if (s->streams[r]->discard != AVDISCARD_ALL) {
1979 if (!first)
1980 av_strlcat(rt->last_subscription, ",",
1981 sizeof(rt->last_subscription));
1982 ff_rdt_subscribe_rule(
1983 rt->last_subscription,
1984 sizeof(rt->last_subscription), i, rule_nr);
1985 first = 0;
1986 }
1987 rule_nr++;
1988 }
1989 }
1990 }
1991 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
b17d11c6
MS
1992 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1993 cmd, reply, NULL);
572c6a38
RB
1994 if (reply->status_code != RTSP_STATUS_OK)
1995 return AVERROR_INVALIDDATA;
1996 rt->need_subscription = 0;
1997
c02fd3d2 1998 if (rt->state == RTSP_STATE_STREAMING)
572c6a38
RB
1999 rtsp_read_play (s);
2000 }
1256d16b
RB
2001 }
2002
d7250724 2003 ret = rtsp_fetch_packet(s, pkt);
c8965800 2004 if (ret < 0)
98713182 2005 return ret;
30e79845
RB
2006
2007 /* send dummy request to keep TCP connection alive */
2008 if ((rt->server_type == RTSP_SERVER_WMS ||
2009 rt->server_type == RTSP_SERVER_REAL) &&
2010 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
2011 if (rt->server_type == RTSP_SERVER_WMS) {
b17d11c6 2012 ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
30e79845 2013 } else {
b17d11c6 2014 ff_rtsp_send_cmd_async(s, "OPTIONS", "*", NULL);
30e79845
RB
2015 }
2016 }
2017
8b1ab7bf 2018 return 0;
1617ad97
FB
2019}
2020
ff762d6e
FB
2021/* pause the stream */
2022static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 2023{
ff762d6e 2024 RTSPState *rt = s->priv_data;
a9e534d5 2025 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34 2026
c02fd3d2 2027 if (rt->state != RTSP_STATE_STREAMING)
ff762d6e 2028 return 0;
2e889ae4 2029 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
b17d11c6 2030 ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
99b2ac07
RB
2031 if (reply->status_code != RTSP_STATUS_OK) {
2032 return -1;
2033 }
1256d16b 2034 }
5f86057f
RB
2035 rt->state = RTSP_STATE_PAUSED;
2036 return 0;
b7b8fc34
FB
2037}
2038
115329f1 2039static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 2040 int64_t timestamp, int flags)
ff762d6e
FB
2041{
2042 RTSPState *rt = s->priv_data;
115329f1 2043
c8965800
RB
2044 rt->seek_timestamp = av_rescale_q(timestamp,
2045 s->streams[stream_index]->time_base,
2046 AV_TIME_BASE_Q);
ff762d6e
FB
2047 switch(rt->state) {
2048 default:
2049 case RTSP_STATE_IDLE:
2050 break;
c02fd3d2 2051 case RTSP_STATE_STREAMING:
ec606b36
LB
2052 if (rtsp_read_pause(s) != 0)
2053 return -1;
2054 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
2055 if (rtsp_read_play(s) != 0)
2056 return -1;
2057 break;
2058 case RTSP_STATE_PAUSED:
2059 rt->state = RTSP_STATE_IDLE;
2060 break;
2061 }
2062 return 0;
2063}
2064
1617ad97
FB
2065static int rtsp_read_close(AVFormatContext *s)
2066{
2067 RTSPState *rt = s->priv_data;
1617ad97 2068
b6892136 2069#if 0
1617ad97 2070 /* NOTE: it is valid to flush the buffer here */
90abbdba 2071 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
2072 url_fclose(&rt->rtsp_gb);
2073 }
b6892136 2074#endif
b17d11c6 2075 ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
1617ad97 2076
3307e6ea 2077 ff_rtsp_close_streams(s);
b8c2c41d 2078 ff_rtsp_close_connections(s);
57b5555c 2079 ff_network_close();
1617ad97
FB
2080 return 0;
2081}
2082
d2a067d1 2083AVInputFormat rtsp_demuxer = {
1617ad97 2084 "rtsp",
bde15e74 2085 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
2086 sizeof(RTSPState),
2087 rtsp_probe,
2088 rtsp_read_header,
2089 rtsp_read_packet,
2090 rtsp_read_close,
ff762d6e 2091 rtsp_read_seek,
bb76a117 2092 .flags = AVFMT_NOFILE,
ff762d6e
FB
2093 .read_play = rtsp_read_play,
2094 .read_pause = rtsp_read_pause,
1617ad97 2095};
96862926 2096#endif
1617ad97 2097
cb1fdc61 2098static int sdp_probe(AVProbeData *p1)
93ced3e8 2099{
0e1ceacd 2100 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
2101
2102 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 2103 while (p < p_end && *p != '\0') {
c8965800
RB
2104 if (p + sizeof("c=IN IP4") - 1 < p_end &&
2105 av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 2106 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 2107
c8965800 2108 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 2109 if (++p >= p_end)
cb1fdc61 2110 break;
cb1fdc61
FB
2111 if (*p == '\r')
2112 p++;
2113 }
93ced3e8
FB
2114 return 0;
2115}
2116
2117#define SDP_MAX_SIZE 8192
2118
c8965800 2119static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 2120{
8b1ab7bf 2121 RTSPState *rt = s->priv_data;
93ced3e8
FB
2122 RTSPStream *rtsp_st;
2123 int size, i, err;
2124 char *content;
2125 char url[1024];
2126
57b5555c
MS
2127 if (!ff_network_init())
2128 return AVERROR(EIO);
2129
93ced3e8
FB
2130 /* read the whole sdp file */
2131 /* XXX: better loading */
2132 content = av_malloc(SDP_MAX_SIZE);
899681cd 2133 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2134 if (size <= 0) {
2135 av_free(content);
2136 return AVERROR_INVALIDDATA;
2137 }
2138 content[size] ='\0';
2139
2140 sdp_parse(s, content);
2141 av_free(content);
2142
2143 /* open each RTP stream */
c8965800 2144 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 2145 rtsp_st = rt->rtsp_streams[i];
115329f1 2146
57b5555c
MS
2147 ff_url_join(url, sizeof(url), "rtp", NULL,
2148 inet_ntoa(rtsp_st->sdp_ip), rtsp_st->sdp_port,
2149 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
2150 rtsp_st->sdp_ttl);
dbf30963 2151 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
2152 err = AVERROR_INVALIDDATA;
2153 goto fail;
2154 }
ee0cb67f 2155 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2156 goto fail;
93ced3e8
FB
2157 }
2158 return 0;
c8965800 2159fail:
3307e6ea 2160 ff_rtsp_close_streams(s);
57b5555c 2161 ff_network_close();
93ced3e8
FB
2162 return err;
2163}
2164
93ced3e8
FB
2165static int sdp_read_close(AVFormatContext *s)
2166{
3307e6ea 2167 ff_rtsp_close_streams(s);
57b5555c 2168 ff_network_close();
93ced3e8
FB
2169 return 0;
2170}
2171
ff70e601 2172AVInputFormat sdp_demuxer = {
93ced3e8 2173 "sdp",
bde15e74 2174 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
2175 sizeof(RTSPState),
2176 sdp_probe,
2177 sdp_read_header,
d7250724 2178 rtsp_fetch_packet,
93ced3e8
FB
2179 sdp_read_close,
2180};