Remove avcodec_thread_execute from avcodec.h, and make static functions that
[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"
1617ad97
FB
25#include "avformat.h"
26
db0ed93e 27#include <sys/time.h>
b250f9c6 28#if HAVE_SYS_SELECT_H
933bd8e2 29#include <sys/select.h>
6ad1c9c9 30#endif
ea452b54 31#include <strings.h>
e4a9e3cc 32#include "internal.h"
42572ef5 33#include "network.h"
cbfa66d0 34#include "os_support.h"
c971ff19 35#include "rtsp.h"
1617ad97 36
302879cb 37#include "rtpdec.h"
e9dea59f 38#include "rdt.h"
f65919af
MS
39#include "rtpdec_asf.h"
40#include "rtpdec_vorbis.h"
4934884a 41
1617ad97 42//#define DEBUG
b6892136 43//#define DEBUG_RTP_TCP
1617ad97 44
c482500f 45#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 46int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 47#endif
85fb7b34 48
1ef36a70 49#define SPACE_CHARS " \t\r\n"
da1e126e
RB
50/* we use memchr() instead of strchr() here because strchr() will return
51 * the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */
52#define redir_isspace(c) memchr(SPACE_CHARS, c, 4)
1617ad97
FB
53static void skip_spaces(const char **pp)
54{
55 const char *p;
56 p = *pp;
57 while (redir_isspace(*p))
58 p++;
59 *pp = p;
60}
61
1ef36a70
RB
62static void get_word_until_chars(char *buf, int buf_size,
63 const char *sep, const char **pp)
1617ad97
FB
64{
65 const char *p;
66 char *q;
67
68 p = *pp;
69 skip_spaces(&p);
70 q = buf;
71 while (!strchr(sep, *p) && *p != '\0') {
72 if ((q - buf) < buf_size - 1)
73 *q++ = *p;
74 p++;
75 }
76 if (buf_size > 0)
77 *q = '\0';
78 *pp = p;
79}
80
1ef36a70
RB
81static void get_word_sep(char *buf, int buf_size, const char *sep,
82 const char **pp)
1617ad97 83{
1ef36a70
RB
84 if (**pp == '/') (*pp)++;
85 get_word_until_chars(buf, buf_size, sep, pp);
86}
1617ad97 87
1ef36a70
RB
88static void get_word(char *buf, int buf_size, const char **pp)
89{
90 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
91}
92
c8965800 93/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3
RB
94static int sdp_parse_rtpmap(AVFormatContext *s,
95 AVCodecContext *codec, RTSPStream *rtsp_st,
c8965800 96 int payload_type, const char *p)
93ced3e8
FB
97{
98 char buf[256];
d1ccf0e0
RD
99 int i;
100 AVCodec *c;
7b49ce2e 101 const char *c_name;
93ced3e8 102
d1ccf0e0 103 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
104 * see if we can handle this kind of payload.
105 * The space should normally not be there but some Real streams or
106 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
107 * have a trailing space. */
108 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 109 if (payload_type >= RTP_PT_PRIVATE) {
c8965800
RB
110 RTPDynamicProtocolHandler *handler;
111 for (handler = RTPFirstDynamicPayloadHandler;
112 handler; handler = handler->next) {
113 if (!strcasecmp(buf, handler->enc_name) &&
114 codec->codec_type == handler->codec_type) {
115 codec->codec_id = handler->codec_id;
116 rtsp_st->dynamic_handler = handler;
117 if (handler->open)
118 rtsp_st->dynamic_protocol_context = handler->open();
d1ccf0e0
RD
119 break;
120 }
4934884a 121 }
93ced3e8 122 } else {
c8965800
RB
123 /* We are in a standard case
124 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 125 /* search into AVRtpPayloadTypes[] */
7ed19d7f 126 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
127 }
128
129 c = avcodec_find_decoder(codec->codec_id);
130 if (c && c->name)
7b49ce2e 131 c_name = c->name;
d1ccf0e0 132 else
170870b7 133 c_name = "(null)";
d1ccf0e0 134
7515ed0c
RB
135 get_word_sep(buf, sizeof(buf), "/", &p);
136 i = atoi(buf);
137 switch (codec->codec_type) {
138 case CODEC_TYPE_AUDIO:
139 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
140 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
141 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
142 if (i > 0) {
143 codec->sample_rate = i;
144 get_word_sep(buf, sizeof(buf), "/", &p);
145 i = atoi(buf);
146 if (i > 0)
147 codec->channels = i;
148 // TODO: there is a bug here; if it is a mono stream, and
149 // less than 22000Hz, faad upconverts to stereo and twice
150 // the frequency. No problem, but the sample rate is being
151 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 152 }
7515ed0c
RB
153 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
154 codec->sample_rate);
155 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
156 codec->channels);
157 break;
158 case CODEC_TYPE_VIDEO:
159 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
160 break;
161 default:
162 break;
163 }
164 return 0;
93ced3e8
FB
165}
166
c8965800 167/* return the length and optionally the data */
93ced3e8
FB
168static int hex_to_data(uint8_t *data, const char *p)
169{
170 int c, len, v;
171
172 len = 0;
173 v = 1;
c8965800 174 for (;;) {
93ced3e8 175 skip_spaces(&p);
6a8c8b36 176 if (*p == '\0')
93ced3e8 177 break;
c8965800 178 c = toupper((unsigned char) *p++);
93ced3e8
FB
179 if (c >= '0' && c <= '9')
180 c = c - '0';
181 else if (c >= 'A' && c <= 'F')
182 c = c - 'A' + 10;
183 else
184 break;
185 v = (v << 4) | c;
186 if (v & 0x100) {
187 if (data)
188 data[len] = v;
189 len++;
190 v = 1;
191 }
192 }
193 return len;
194}
195
e6327fba
RB
196static void sdp_parse_fmtp_config(AVCodecContext * codec, void *ctx,
197 char *attr, char *value)
d1ccf0e0
RD
198{
199 switch (codec->codec_id) {
c8965800
RB
200 case CODEC_ID_MPEG4:
201 case CODEC_ID_AAC:
202 if (!strcmp(attr, "config")) {
203 /* decode the hexa encoded parameter */
204 int len = hex_to_data(NULL, value);
205 if (codec->extradata)
206 av_free(codec->extradata);
207 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
208 if (!codec->extradata)
209 return;
210 codec->extradata_size = len;
211 hex_to_data(codec->extradata, value);
212 }
213 break;
214 case CODEC_ID_VORBIS:
215 ff_vorbis_parse_fmtp_config(codec, ctx, attr, value);
216 break;
217 default:
218 break;
d1ccf0e0
RD
219 }
220 return;
221}
222
644e7acb 223typedef struct {
7b49ce2e 224 const char *str;
c8965800
RB
225 uint16_t type;
226 uint32_t offset;
644e7acb 227} AttrNameMap;
d1ccf0e0
RD
228
229/* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
230#define ATTR_NAME_TYPE_INT 0
231#define ATTR_NAME_TYPE_STR 1
644e7acb 232static const AttrNameMap attr_names[]=
d1ccf0e0 233{
c8965800
RB
234 { "SizeLength", ATTR_NAME_TYPE_INT,
235 offsetof(RTPPayloadData, sizelength) },
236 { "IndexLength", ATTR_NAME_TYPE_INT,
237 offsetof(RTPPayloadData, indexlength) },
238 { "IndexDeltaLength", ATTR_NAME_TYPE_INT,
239 offsetof(RTPPayloadData, indexdeltalength) },
240 { "profile-level-id", ATTR_NAME_TYPE_INT,
241 offsetof(RTPPayloadData, profile_level_id) },
242 { "StreamType", ATTR_NAME_TYPE_INT,
243 offsetof(RTPPayloadData, streamtype) },
244 { "mode", ATTR_NAME_TYPE_STR,
245 offsetof(RTPPayloadData, mode) },
246 { NULL, -1, -1 },
d1ccf0e0
RD
247};
248
c8965800
RB
249/* parse the attribute line from the fmtp a line of an sdp resonse. This
250 * is broken out as a function because it is used in rtp_h264.c, which is
251 * forthcoming. */
3307e6ea 252int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 253 char *value, int value_size)
d0deedcb
RM
254{
255 skip_spaces(p);
c8965800 256 if (**p) {
d0deedcb
RM
257 get_word_sep(attr, attr_size, "=", p);
258 if (**p == '=')
259 (*p)++;
260 get_word_sep(value, value_size, ";", p);
261 if (**p == ';')
262 (*p)++;
263 return 1;
264 }
265 return 0;
266}
267
d1ccf0e0
RD
268/* parse a SDP line and save stream attributes */
269static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
270{
271 char attr[256];
373afbaf
RB
272 /* Vorbis setup headers can be up to 12KB and are sent base64
273 * encoded, giving a 12KB * (4/3) = 16KB FMTP line. */
274 char value[16384];
d1ccf0e0 275 int i;
d1ccf0e0 276 RTSPStream *rtsp_st = st->priv_data;
01f4895c 277 AVCodecContext *codec = st->codec;
be73a544 278 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
279
280 /* loop on each attribute */
3307e6ea 281 while (ff_rtsp_next_attr_and_value(&p, attr, sizeof(attr),
93993933 282 value, sizeof(value))) {
c8965800
RB
283 /* grab the codec extra_data from the config parameter of the fmtp
284 * line */
e6327fba
RB
285 sdp_parse_fmtp_config(codec, rtsp_st->dynamic_protocol_context,
286 attr, value);
d1ccf0e0
RD
287 /* Looking for a known attribute */
288 for (i = 0; attr_names[i].str; ++i) {
289 if (!strcasecmp(attr, attr_names[i].str)) {
c8965800
RB
290 if (attr_names[i].type == ATTR_NAME_TYPE_INT) {
291 *(int *)((char *)rtp_payload_data +
292 attr_names[i].offset) = atoi(value);
293 } else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
294 *(char **)((char *)rtp_payload_data +
295 attr_names[i].offset) = av_strdup(value);
bb270c08 296 }
93ced3e8 297 }
93ced3e8
FB
298 }
299}
300
debe86bf 301/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
31693e00
RM
302 * and end time.
303 * Used for seeking in the rtp stream.
304 */
305static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
306{
307 char buf[256];
308
309 skip_spaces(&p);
f7d78f36 310 if (!av_stristart(p, "npt=", &p))
31693e00
RM
311 return;
312
313 *start = AV_NOPTS_VALUE;
314 *end = AV_NOPTS_VALUE;
315
316 get_word_sep(buf, sizeof(buf), "-", &p);
317 *start = parse_date(buf, 1);
318 if (*p == '-') {
319 p++;
320 get_word_sep(buf, sizeof(buf), "-", &p);
321 *end = parse_date(buf, 1);
322 }
323// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
324// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
325}
326
93ced3e8
FB
327typedef struct SDPParseState {
328 /* SDP only */
329 struct in_addr default_ip;
c8965800
RB
330 int default_ttl;
331 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
332} SDPParseState;
333
334static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
335 int letter, const char *buf)
336{
8b1ab7bf 337 RTSPState *rt = s->priv_data;
1617ad97
FB
338 char buf1[64], st_type[64];
339 const char *p;
fb65d2ca
DP
340 enum CodecType codec_type;
341 int payload_type, i;
1617ad97
FB
342 AVStream *st;
343 RTSPStream *rtsp_st;
93ced3e8
FB
344 struct in_addr sdp_ip;
345 int ttl;
346
67c9cd69 347 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
348
349 p = buf;
cb760a47
RB
350 if (s1->skip_media && letter != 'm')
351 return;
c8965800 352 switch (letter) {
93ced3e8
FB
353 case 'c':
354 get_word(buf1, sizeof(buf1), &p);
355 if (strcmp(buf1, "IN") != 0)
356 return;
357 get_word(buf1, sizeof(buf1), &p);
358 if (strcmp(buf1, "IP4") != 0)
359 return;
360 get_word_sep(buf1, sizeof(buf1), "/", &p);
ac11d562 361 if (ff_inet_aton(buf1, &sdp_ip) == 0)
93ced3e8
FB
362 return;
363 ttl = 16;
364 if (*p == '/') {
365 p++;
366 get_word_sep(buf1, sizeof(buf1), "/", &p);
367 ttl = atoi(buf1);
368 }
369 if (s->nb_streams == 0) {
370 s1->default_ip = sdp_ip;
371 s1->default_ttl = ttl;
372 } else {
373 st = s->streams[s->nb_streams - 1];
374 rtsp_st = st->priv_data;
375 rtsp_st->sdp_ip = sdp_ip;
376 rtsp_st->sdp_ttl = ttl;
377 }
378 break;
1617ad97 379 case 's':
da61e413 380 av_metadata_set(&s->metadata, "title", p);
1617ad97
FB
381 break;
382 case 'i':
383 if (s->nb_streams == 0) {
da61e413 384 av_metadata_set(&s->metadata, "comment", p);
1617ad97
FB
385 break;
386 }
387 break;
388 case 'm':
389 /* new stream */
cb760a47 390 s1->skip_media = 0;
1617ad97
FB
391 get_word(st_type, sizeof(st_type), &p);
392 if (!strcmp(st_type, "audio")) {
393 codec_type = CODEC_TYPE_AUDIO;
394 } else if (!strcmp(st_type, "video")) {
395 codec_type = CODEC_TYPE_VIDEO;
090438cc
RB
396 } else if (!strcmp(st_type, "application")) {
397 codec_type = CODEC_TYPE_DATA;
1617ad97 398 } else {
cb760a47 399 s1->skip_media = 1;
1617ad97
FB
400 return;
401 }
1617ad97
FB
402 rtsp_st = av_mallocz(sizeof(RTSPStream));
403 if (!rtsp_st)
404 return;
8b1ab7bf
FB
405 rtsp_st->stream_index = -1;
406 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
407
408 rtsp_st->sdp_ip = s1->default_ip;
409 rtsp_st->sdp_ttl = s1->default_ttl;
410
93ced3e8
FB
411 get_word(buf1, sizeof(buf1), &p); /* port */
412 rtsp_st->sdp_port = atoi(buf1);
413
414 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 415
93ced3e8
FB
416 /* XXX: handle list of formats */
417 get_word(buf1, sizeof(buf1), &p); /* format list */
418 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 419
7ed19d7f 420 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
421 /* no corresponding stream */
422 } else {
423 st = av_new_stream(s, 0);
424 if (!st)
425 return;
426 st->priv_data = rtsp_st;
427 rtsp_st->stream_index = st->index;
01f4895c 428 st->codec->codec_type = codec_type;
d1ccf0e0 429 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 430 /* if standard payload type, we can find the codec right now */
bf6d9818 431 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
432 }
433 }
1617ad97 434 /* put a default control url */
00eb13e0 435 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 436 sizeof(rtsp_st->control_url));
1617ad97
FB
437 break;
438 case 'a':
00eb13e0
AS
439 if (av_strstart(p, "control:", &p)) {
440 if (s->nb_streams == 0) {
441 if (!strncmp(p, "rtsp://", 7))
442 av_strlcpy(rt->control_uri, p,
443 sizeof(rt->control_uri));
444 } else {
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 */
c5c6e67c 451 ff_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
f984dcf6 452 NULL, NULL, 0, p);
1617ad97
FB
453 if (proto[0] == '\0') {
454 /* relative control URL */
00eb13e0 455 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
c8965800
RB
456 av_strlcat(rtsp_st->control_url, "/",
457 sizeof(rtsp_st->control_url));
458 av_strlcat(rtsp_st->control_url, p,
459 sizeof(rtsp_st->control_url));
460 } else
461 av_strlcpy(rtsp_st->control_url, p,
462 sizeof(rtsp_st->control_url));
00eb13e0 463 }
83d14c85 464 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 465 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 466 get_word(buf1, sizeof(buf1), &p);
93ced3e8 467 payload_type = atoi(buf1);
83d14c85 468 st = s->streams[s->nb_streams - 1];
ff16f551 469 rtsp_st = st->priv_data;
8f3c87f3 470 sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p);
f7d78f36 471 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 472 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 473 get_word(buf1, sizeof(buf1), &p);
93ced3e8 474 payload_type = atoi(buf1);
c8965800
RB
475 for (i = 0; i < s->nb_streams; i++) {
476 st = s->streams[i];
93ced3e8
FB
477 rtsp_st = st->priv_data;
478 if (rtsp_st->sdp_payload_type == payload_type) {
c8965800
RB
479 if (!(rtsp_st->dynamic_handler &&
480 rtsp_st->dynamic_handler->parse_sdp_a_line &&
481 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
482 i, rtsp_st->dynamic_protocol_context, buf)))
ed787542 483 sdp_parse_fmtp(st, p);
93ced3e8
FB
484 }
485 }
c8965800 486 } else if (av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
487 // let dynamic protocol handlers have a stab at the line.
488 get_word(buf1, sizeof(buf1), &p);
489 payload_type = atoi(buf1);
c8965800
RB
490 for (i = 0; i < s->nb_streams; i++) {
491 st = s->streams[i];
d0deedcb 492 rtsp_st = st->priv_data;
c8965800
RB
493 if (rtsp_st->sdp_payload_type == payload_type &&
494 rtsp_st->dynamic_handler &&
495 rtsp_st->dynamic_handler->parse_sdp_a_line)
496 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
497 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 498 }
c8965800 499 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
500 int64_t start, end;
501
502 // this is so that seeking on a streamed file can work.
503 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
504 s->start_time = start;
505 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
506 s->duration = (end == AV_NOPTS_VALUE) ?
507 AV_NOPTS_VALUE : end - start;
119b4668
RB
508 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
509 if (atoi(p) == 1)
510 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
511 } else {
512 if (rt->server_type == RTSP_SERVER_WMS)
513 ff_wms_parse_sdp_a_line(s, p);
514 if (s->nb_streams > 0) {
c4a3d032
RB
515 if (rt->server_type == RTSP_SERVER_REAL)
516 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
517
518 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
519 if (rtsp_st->dynamic_handler &&
520 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
521 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
522 s->nb_streams - 1,
c4a3d032 523 rtsp_st->dynamic_protocol_context, buf);
1a30d541 524 }
1617ad97
FB
525 }
526 break;
527 }
528}
529
5c91a675 530static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
531{
532 const char *p;
533 int letter;
9211bcdd
RB
534 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
535 * contain long SDP lines containing complete ASF Headers (several
536 * kB) or arrays of MDPR (RM stream descriptor) headers plus
537 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
538 * buffer is large.
539 *
540 * The Vorbis FMTP line can be up to 16KB - see sdp_parse_fmtp. */
541 char buf[16384], *q;
93ced3e8 542 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 543
93ced3e8 544 memset(s1, 0, sizeof(SDPParseState));
1617ad97 545 p = content;
c8965800 546 for (;;) {
1617ad97
FB
547 skip_spaces(&p);
548 letter = *p;
549 if (letter == '\0')
550 break;
551 p++;
552 if (*p != '=')
553 goto next_line;
554 p++;
555 /* get the content */
556 q = buf;
b6892136 557 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
558 if ((q - buf) < sizeof(buf) - 1)
559 *q++ = *p;
560 p++;
561 }
562 *q = '\0';
93ced3e8 563 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
564 next_line:
565 while (*p != '\n' && *p != '\0')
566 p++;
567 if (*p == '\n')
568 p++;
569 }
570 return 0;
571}
572
1ced9da3 573/* close and free RTSP streams */
3307e6ea 574void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 575{
52aa4338 576 RTSPState *rt = s->priv_data;
1ced9da3
LA
577 int i;
578 RTSPStream *rtsp_st;
579
c8965800 580 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
581 rtsp_st = rt->rtsp_streams[i];
582 if (rtsp_st) {
583 if (rtsp_st->transport_priv) {
fd450a51
MS
584 if (s->oformat) {
585 AVFormatContext *rtpctx = rtsp_st->transport_priv;
586 av_write_trailer(rtpctx);
587 url_fclose(rtpctx->pb);
f86f6656
MS
588 av_metadata_free(&rtpctx->streams[0]->metadata);
589 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
590 av_free(rtpctx->streams[0]);
591 av_free(rtpctx);
592 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
593 ff_rdt_parse_close(rtsp_st->transport_priv);
594 else
595 rtp_parse_close(rtsp_st->transport_priv);
596 }
597 if (rtsp_st->rtp_handle)
598 url_close(rtsp_st->rtp_handle);
599 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
600 rtsp_st->dynamic_handler->close(
601 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
602 }
603 }
604 av_free(rt->rtsp_streams);
605 if (rt->asf_ctx) {
606 av_close_input_stream (rt->asf_ctx);
607 rt->asf_ctx = NULL;
608 }
609 av_freep(&rt->auth_b64);
610}
611
5c7fd910
MS
612static void *rtsp_rtp_mux_open(AVFormatContext *s, AVStream *st,
613 URLContext *handle)
614{
fd450a51
MS
615 AVFormatContext *rtpctx;
616 int ret;
617 AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
618
619 if (!rtp_format)
620 return NULL;
621
622 /* Allocate an AVFormatContext for each output stream */
623 rtpctx = avformat_alloc_context();
624 if (!rtpctx)
625 return NULL;
626
627 rtpctx->oformat = rtp_format;
628 if (!av_new_stream(rtpctx, 0)) {
629 av_free(rtpctx);
630 return NULL;
631 }
632 /* Copy the max delay setting; the rtp muxer reads this. */
633 rtpctx->max_delay = s->max_delay;
634 /* Copy other stream parameters. */
635 rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
636
637 /* Remove the local codec, link to the original codec
638 * context instead, to give the rtp muxer access to
639 * codec parameters. */
640 av_free(rtpctx->streams[0]->codec);
641 rtpctx->streams[0]->codec = st->codec;
642
643 url_fdopen(&rtpctx->pb, handle);
644 ret = av_write_header(rtpctx);
645
646 if (ret) {
647 url_fclose(rtpctx->pb);
648 av_free(rtpctx->streams[0]);
649 av_free(rtpctx);
650 return NULL;
651 }
652
653 /* Copy the RTP AVStream timebase back to the original AVStream */
654 st->time_base = rtpctx->streams[0]->time_base;
655 return rtpctx;
656}
657
c8965800 658static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
659{
660 RTSPState *rt = s->priv_data;
661 AVStream *st = NULL;
662
663 /* open the RTP context */
664 if (rtsp_st->stream_index >= 0)
665 st = s->streams[rtsp_st->stream_index];
666 if (!st)
667 s->ctx_flags |= AVFMTCTX_NOHEADER;
668
fd450a51
MS
669 if (s->oformat) {
670 rtsp_st->transport_priv = rtsp_rtp_mux_open(s, st, rtsp_st->rtp_handle);
671 /* Ownage of rtp_handle is passed to the rtp mux context */
672 rtsp_st->rtp_handle = NULL;
673 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
674 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
675 rtsp_st->dynamic_protocol_context,
676 rtsp_st->dynamic_handler);
677 else
678 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
679 rtsp_st->sdp_payload_type,
680 &rtsp_st->rtp_payload_data);
681
682 if (!rtsp_st->transport_priv) {
683 return AVERROR(ENOMEM);
684 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
c8965800 685 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
686 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
687 rtsp_st->dynamic_protocol_context,
688 rtsp_st->dynamic_handler);
689 }
690 }
691
692 return 0;
693}
694
6f5a3d0a 695#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1ced9da3
LA
696static int rtsp_probe(AVProbeData *p)
697{
698 if (av_strstart(p->filename, "rtsp:", NULL))
699 return AVPROBE_SCORE_MAX;
700 return 0;
701}
702
1617ad97
FB
703static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
704{
705 const char *p;
706 int v;
707
708 p = *pp;
709 skip_spaces(&p);
710 v = strtol(p, (char **)&p, 10);
711 if (*p == '-') {
712 p++;
713 *min_ptr = v;
714 v = strtol(p, (char **)&p, 10);
715 *max_ptr = v;
716 } else {
717 *min_ptr = v;
718 *max_ptr = v;
719 }
720 *pp = p;
721}
722
723/* XXX: only one transport specification is parsed */
a9e534d5 724static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
725{
726 char transport_protocol[16];
727 char profile[16];
728 char lower_transport[16];
729 char parameter[16];
730 RTSPTransportField *th;
731 char buf[256];
115329f1 732
1617ad97 733 reply->nb_transports = 0;
115329f1 734
c8965800 735 for (;;) {
1617ad97
FB
736 skip_spaces(&p);
737 if (*p == '\0')
738 break;
739
740 th = &reply->transports[reply->nb_transports];
741
115329f1 742 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 743 "/", &p);
e1502118 744 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
745 get_word_sep(profile, sizeof(profile), "/;,", &p);
746 lower_transport[0] = '\0';
747 /* rtp/avp/<protocol> */
748 if (*p == '/') {
7ecc634e
LB
749 get_word_sep(lower_transport, sizeof(lower_transport),
750 ";,", &p);
119b4668
RB
751 }
752 th->transport = RTSP_TRANSPORT_RTP;
753 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
754 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 755 /* x-pn-tng/<protocol> */
e1502118
LB
756 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
757 profile[0] = '\0';
119b4668 758 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 759 }
b6892136 760 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 761 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 762 else
90abbdba 763 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 764
1617ad97
FB
765 if (*p == ';')
766 p++;
767 /* get each parameter */
768 while (*p != '\0' && *p != ',') {
769 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
770 if (!strcmp(parameter, "port")) {
771 if (*p == '=') {
772 p++;
773 rtsp_parse_range(&th->port_min, &th->port_max, &p);
774 }
775 } else if (!strcmp(parameter, "client_port")) {
776 if (*p == '=') {
777 p++;
115329f1 778 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
779 &th->client_port_max, &p);
780 }
781 } else if (!strcmp(parameter, "server_port")) {
782 if (*p == '=') {
783 p++;
115329f1 784 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
785 &th->server_port_max, &p);
786 }
787 } else if (!strcmp(parameter, "interleaved")) {
788 if (*p == '=') {
789 p++;
115329f1 790 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
791 &th->interleaved_max, &p);
792 }
793 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
794 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
795 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
796 } else if (!strcmp(parameter, "ttl")) {
797 if (*p == '=') {
798 p++;
799 th->ttl = strtol(p, (char **)&p, 10);
800 }
801 } else if (!strcmp(parameter, "destination")) {
802 struct in_addr ipaddr;
803
804 if (*p == '=') {
805 p++;
806 get_word_sep(buf, sizeof(buf), ";,", &p);
ac11d562 807 if (ff_inet_aton(buf, &ipaddr))
1617ad97
FB
808 th->destination = ntohl(ipaddr.s_addr);
809 }
810 }
811 while (*p != ';' && *p != '\0' && *p != ',')
812 p++;
813 if (*p == ';')
814 p++;
815 }
816 if (*p == ',')
817 p++;
818
819 reply->nb_transports++;
820 }
821}
822
3307e6ea 823void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
824{
825 const char *p;
826
827 /* NOTE: we do case independent match for broken servers */
828 p = buf;
f7d78f36 829 if (av_stristart(p, "Session:", &p)) {
30e79845 830 int t;
1617ad97 831 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
832 if (av_stristart(p, ";timeout=", &p) &&
833 (t = strtol(p, NULL, 10)) > 0) {
834 reply->timeout = t;
835 }
f7d78f36 836 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 837 reply->content_length = strtol(p, NULL, 10);
f7d78f36 838 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 839 rtsp_parse_transport(reply, p);
f7d78f36 840 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 841 reply->seq = strtol(p, NULL, 10);
f7d78f36 842 } else if (av_stristart(p, "Range:", &p)) {
31693e00 843 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
844 } else if (av_stristart(p, "RealChallenge1:", &p)) {
845 skip_spaces(&p);
846 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
847 } else if (av_stristart(p, "Server:", &p)) {
848 skip_spaces(&p);
849 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
850 } else if (av_stristart(p, "Notice:", &p) ||
851 av_stristart(p, "X-Notice:", &p)) {
852 reply->notice = strtol(p, NULL, 10);
d243ba30
LB
853 } else if (av_stristart(p, "Location:", &p)) {
854 skip_spaces(&p);
855 av_strlcpy(reply->location, p , sizeof(reply->location));
1617ad97
FB
856 }
857}
858
b7b8fc34
FB
859/* skip a RTP/TCP interleaved packet */
860static void rtsp_skip_packet(AVFormatContext *s)
861{
862 RTSPState *rt = s->priv_data;
863 int ret, len, len1;
864 uint8_t buf[1024];
865
0e848977 866 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
867 if (ret != 3)
868 return;
80fb8234 869 len = AV_RB16(buf + 1);
67c9cd69
BC
870
871 dprintf(s, "skipping RTP packet len=%d\n", len);
872
b7b8fc34
FB
873 /* skip payload */
874 while (len > 0) {
875 len1 = len;
876 if (len1 > sizeof(buf))
877 len1 = sizeof(buf);
0e848977 878 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
879 if (ret != len1)
880 return;
881 len -= len1;
882 }
883}
1617ad97 884
3307e6ea 885int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
886 unsigned char **content_ptr,
887 int return_on_interleaved_data)
1617ad97
FB
888{
889 RTSPState *rt = s->priv_data;
890 char buf[4096], buf1[1024], *q;
891 unsigned char ch;
892 const char *p;
7e726132 893 int ret, content_length, line_count = 0;
1617ad97
FB
894 unsigned char *content = NULL;
895
d541a7d2 896 memset(reply, 0, sizeof(*reply));
1617ad97 897
1617ad97 898 /* parse reply (XXX: use buffers) */
1617ad97 899 rt->last_reply[0] = '\0';
c8965800 900 for (;;) {
1617ad97 901 q = buf;
c8965800 902 for (;;) {
0e848977 903 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 904#ifdef DEBUG_RTP_TCP
67c9cd69 905 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
906#endif
907 if (ret != 1)
908 return -1;
1617ad97
FB
909 if (ch == '\n')
910 break;
b7b8fc34
FB
911 if (ch == '$') {
912 /* XXX: only parse it if first char on line ? */
7e726132
RB
913 if (return_on_interleaved_data) {
914 return 1;
915 } else
b7b8fc34
FB
916 rtsp_skip_packet(s);
917 } else if (ch != '\r') {
1617ad97
FB
918 if ((q - buf) < sizeof(buf) - 1)
919 *q++ = ch;
920 }
921 }
922 *q = '\0';
67c9cd69
BC
923
924 dprintf(s, "line='%s'\n", buf);
925
1617ad97
FB
926 /* test if last line */
927 if (buf[0] == '\0')
928 break;
929 p = buf;
930 if (line_count == 0) {
931 /* get reply code */
932 get_word(buf1, sizeof(buf1), &p);
933 get_word(buf1, sizeof(buf1), &p);
934 reply->status_code = atoi(buf1);
935 } else {
3307e6ea 936 ff_rtsp_parse_line(reply, p);
75e61b0e
MR
937 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
938 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
939 }
940 line_count++;
941 }
115329f1 942
1617ad97 943 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 944 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 945
1617ad97
FB
946 content_length = reply->content_length;
947 if (content_length > 0) {
948 /* leave some room for a trailing '\0' (useful for simple parsing) */
949 content = av_malloc(content_length + 1);
0e848977 950 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
951 content[content_length] = '\0';
952 }
953 if (content_ptr)
954 *content_ptr = content;
e2e2e7dd
AB
955 else
956 av_free(content);
7e726132 957
fccb1770
RB
958 /* EOS */
959 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
960 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 961 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 962 rt->state = RTSP_STATE_IDLE;
c8965800 963 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 964 return AVERROR(EIO); /* data or server error */
c8965800 965 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
966 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
967 return AVERROR(EPERM);
968
7e726132 969 return 0;
1617ad97
FB
970}
971
3307e6ea 972void ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
93993933
MS
973 const char *cmd,
974 const unsigned char *send_content,
975 int send_content_length)
29b9f58b
RB
976{
977 RTSPState *rt = s->priv_data;
978 char buf[4096], buf1[1024];
979
980 rt->seq++;
981 av_strlcpy(buf, cmd, sizeof(buf));
982 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
983 av_strlcat(buf, buf1, sizeof(buf));
984 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
985 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
986 av_strlcat(buf, buf1, sizeof(buf));
987 }
f9337897
RB
988 if (rt->auth_b64)
989 av_strlcatf(buf, sizeof(buf),
ba93ea6d
RB
990 "Authorization: Basic %s\r\n",
991 rt->auth_b64);
dfd017bf
MS
992 if (send_content_length > 0 && send_content)
993 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 994 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69
BC
995
996 dprintf(s, "Sending:\n%s--\n", buf);
997
29b9f58b 998 url_write(rt->rtsp_hd, buf, strlen(buf));
dfd017bf
MS
999 if (send_content_length > 0 && send_content)
1000 url_write(rt->rtsp_hd, send_content, send_content_length);
30e79845
RB
1001 rt->last_cmd_time = av_gettime();
1002}
1003
3307e6ea 1004void ff_rtsp_send_cmd_async(AVFormatContext *s, const char *cmd)
dfd017bf 1005{
3307e6ea 1006 ff_rtsp_send_cmd_with_content_async(s, cmd, NULL, 0);
dfd017bf
MS
1007}
1008
3307e6ea 1009void ff_rtsp_send_cmd(AVFormatContext *s,
93993933
MS
1010 const char *cmd, RTSPMessageHeader *reply,
1011 unsigned char **content_ptr)
30e79845 1012{
3307e6ea 1013 ff_rtsp_send_cmd_async(s, cmd);
29b9f58b 1014
3307e6ea 1015 ff_rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
1016}
1017
3307e6ea 1018void ff_rtsp_send_cmd_with_content(AVFormatContext *s,
af037f80
MS
1019 const char *cmd,
1020 RTSPMessageHeader *reply,
1021 unsigned char **content_ptr,
1022 const unsigned char *send_content,
1023 int send_content_length)
dfd017bf 1024{
3307e6ea 1025 ff_rtsp_send_cmd_with_content_async(s, cmd, send_content, send_content_length);
dfd017bf 1026
3307e6ea 1027 ff_rtsp_read_reply(s, reply, content_ptr, 0);
dfd017bf
MS
1028}
1029
53620bba
RB
1030/**
1031 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
1032 */
c8965800
RB
1033static int make_setup_request(AVFormatContext *s, const char *host, int port,
1034 int lower_transport, const char *real_challenge)
1617ad97
FB
1035{
1036 RTSPState *rt = s->priv_data;
f830c9a4 1037 int rtx, j, i, err, interleave = 0;
1617ad97 1038 RTSPStream *rtsp_st;
a9e534d5 1039 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1040 char cmd[2048];
e9dea59f
RB
1041 const char *trans_pref;
1042
119b4668 1043 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1044 trans_pref = "x-pn-tng";
1045 else
1046 trans_pref = "RTP/AVP";
115329f1 1047
30e79845
RB
1048 /* default timeout: 1 minute */
1049 rt->timeout = 60;
1050
1617ad97
FB
1051 /* for each stream, make the setup request */
1052 /* XXX: we assume the same server is used for the control of each
c8965800 1053 * RTSP stream */
d1ccf0e0 1054
c8965800 1055 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1056 char transport[2048];
1057
f830c9a4
RB
1058 /**
1059 * WMS serves all UDP data over a single connection, the RTX, which
1060 * isn't necessarily the first in the SDP but has to be the first
1061 * to be set up, else the second/third SETUP will fail with a 461.
1062 */
1063 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1064 rt->server_type == RTSP_SERVER_WMS) {
1065 if (i == 0) {
1066 /* rtx first */
1067 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1068 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1069 if (len >= 4 &&
c8965800
RB
1070 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1071 "/rtx"))
f830c9a4
RB
1072 break;
1073 }
1074 if (rtx == rt->nb_rtsp_streams)
1075 return -1; /* no RTX found */
1076 rtsp_st = rt->rtsp_streams[rtx];
1077 } else
1078 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1079 } else
2fea9650 1080 rtsp_st = rt->rtsp_streams[i];
1617ad97 1081
1617ad97 1082 /* RTP/UDP */
90abbdba 1083 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1084 char buf[256];
85fb7b34 1085
f830c9a4
RB
1086 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1087 port = reply->transports[0].client_port_min;
1088 goto have_port;
1089 }
1090
85fb7b34 1091 /* first try in specified port range */
d1ccf0e0 1092 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1093 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1094 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1095 "?localport=%d", j);
c8965800
RB
1096 /* we will use two ports per rtp stream (rtp and rtcp) */
1097 j += 2;
1098 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1099 goto rtp_opened;
1100 }
1617ad97 1101 }
85fb7b34 1102
c8965800
RB
1103#if 0
1104 /* then try on any port */
1105 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1106 err = AVERROR_INVALIDDATA;
1107 goto fail;
1108 }
1109#endif
85fb7b34
FB
1110
1111 rtp_opened:
8b1ab7bf 1112 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1113 have_port:
0ad306bc 1114 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1115 "%s/UDP;", trans_pref);
1116 if (rt->server_type != RTSP_SERVER_REAL)
1117 av_strlcat(transport, "unicast;", sizeof(transport));
1118 av_strlcatf(transport, sizeof(transport),
1119 "client_port=%d", port);
f830c9a4
RB
1120 if (rt->transport == RTSP_TRANSPORT_RTP &&
1121 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1122 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1123 }
1124
1125 /* RTP/TCP */
90abbdba 1126 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1127 /** For WMS streams, the application streams are only used for
1128 * UDP. When trying to set it up for TCP streams, the server
1129 * will return an error. Therefore, we skip those streams. */
1130 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800
RB
1131 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1132 CODEC_TYPE_DATA)
090438cc 1133 continue;
0ad306bc 1134 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1135 "%s/TCP;", trans_pref);
1136 if (rt->server_type == RTSP_SERVER_WMS)
1137 av_strlcat(transport, "unicast;", sizeof(transport));
1138 av_strlcatf(transport, sizeof(transport),
1139 "interleaved=%d-%d",
1140 interleave, interleave + 1);
1141 interleave += 2;
1617ad97
FB
1142 }
1143
90abbdba 1144 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1145 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1146 "%s/UDP;multicast", trans_pref);
1617ad97 1147 }
69adcc4f
MS
1148 if (s->oformat) {
1149 av_strlcat(transport, ";mode=receive", sizeof(transport));
1150 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1151 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1152 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1153 snprintf(cmd, sizeof(cmd),
b6892136
FB
1154 "SETUP %s RTSP/1.0\r\n"
1155 "Transport: %s\r\n",
1617ad97 1156 rtsp_st->control_url, transport);
2e889ae4 1157 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1158 char real_res[41], real_csum[9];
1159 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1160 real_challenge);
1161 av_strlcatf(cmd, sizeof(cmd),
1162 "If-Match: %s\r\n"
1163 "RealChallenge2: %s, sd=%s\r\n",
1164 rt->session_id, real_res, real_csum);
1165 }
3307e6ea 1166 ff_rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1167 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1168 err = 1;
1169 goto fail;
7e6ca34f
RB
1170 } else if (reply->status_code != RTSP_STATUS_OK ||
1171 reply->nb_transports != 1) {
1617ad97
FB
1172 err = AVERROR_INVALIDDATA;
1173 goto fail;
1174 }
1175
1176 /* XXX: same protocol for all streams is required */
1177 if (i > 0) {
119b4668
RB
1178 if (reply->transports[0].lower_transport != rt->lower_transport ||
1179 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1180 err = AVERROR_INVALIDDATA;
1181 goto fail;
1182 }
1183 } else {
90abbdba 1184 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1185 rt->transport = reply->transports[0].transport;
1617ad97
FB
1186 }
1187
1188 /* close RTP connection if not choosen */
90abbdba
RB
1189 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1190 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1191 url_close(rtsp_st->rtp_handle);
1192 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1193 }
1194
90abbdba
RB
1195 switch(reply->transports[0].lower_transport) {
1196 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1197 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1198 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1199 break;
115329f1 1200
c8965800
RB
1201 case RTSP_LOWER_TRANSPORT_UDP: {
1202 char url[1024];
1203
1204 /* XXX: also use address if specified */
57b5555c
MS
1205 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1206 reply->transports[0].server_port_min, NULL);
c8965800
RB
1207 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1208 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1209 err = AVERROR_INVALIDDATA;
1210 goto fail;
1617ad97 1211 }
9c8fa20d
MS
1212 /* Try to initialize the connection state in a
1213 * potential NAT router by sending dummy packets.
1214 * RTP/RTCP dummy packets are used for RDT, too.
1215 */
30ff7c5c 1216 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat)
9c8fa20d 1217 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1218 break;
c8965800
RB
1219 }
1220 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1221 char url[1024];
1222 struct in_addr in;
1223 int port, ttl;
1224
1225 if (reply->transports[0].destination) {
1226 in.s_addr = htonl(reply->transports[0].destination);
1227 port = reply->transports[0].port_min;
1228 ttl = reply->transports[0].ttl;
1229 } else {
1230 in = rtsp_st->sdp_ip;
1231 port = rtsp_st->sdp_port;
1232 ttl = rtsp_st->sdp_ttl;
1233 }
57b5555c
MS
1234 ff_url_join(url, sizeof(url), "rtp", NULL, inet_ntoa(in),
1235 port, "?ttl=%d", ttl);
c8965800
RB
1236 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1237 err = AVERROR_INVALIDDATA;
1238 goto fail;
1617ad97
FB
1239 }
1240 break;
1241 }
c8965800 1242 }
d1ccf0e0 1243
ee0cb67f 1244 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1245 goto fail;
1617ad97
FB
1246 }
1247
30e79845
RB
1248 if (reply->timeout > 0)
1249 rt->timeout = reply->timeout;
1250
2e889ae4 1251 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1252 rt->need_subscription = 1;
1253
53620bba
RB
1254 return 0;
1255
1256fail:
c8965800 1257 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1258 if (rt->rtsp_streams[i]->rtp_handle) {
1259 url_close(rt->rtsp_streams[i]->rtp_handle);
1260 rt->rtsp_streams[i]->rtp_handle = NULL;
1261 }
1262 }
53620bba
RB
1263 return err;
1264}
1265
1ced9da3
LA
1266static int rtsp_read_play(AVFormatContext *s)
1267{
1268 RTSPState *rt = s->priv_data;
1269 RTSPMessageHeader reply1, *reply = &reply1;
1270 char cmd[1024];
1271
1272 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
1273
1274 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1275 if (rt->state == RTSP_STATE_PAUSED) {
1276 snprintf(cmd, sizeof(cmd),
1277 "PLAY %s RTSP/1.0\r\n",
00eb13e0 1278 rt->control_uri);
1ced9da3
LA
1279 } else {
1280 snprintf(cmd, sizeof(cmd),
1281 "PLAY %s RTSP/1.0\r\n"
1282 "Range: npt=%0.3f-\r\n",
00eb13e0 1283 rt->control_uri,
1ced9da3
LA
1284 (double)rt->seek_timestamp / AV_TIME_BASE);
1285 }
3307e6ea 1286 ff_rtsp_send_cmd(s, cmd, reply, NULL);
1ced9da3
LA
1287 if (reply->status_code != RTSP_STATUS_OK) {
1288 return -1;
1289 }
1290 }
c02fd3d2 1291 rt->state = RTSP_STATE_STREAMING;
1ced9da3
LA
1292 return 0;
1293}
1294
e23d195d
MS
1295static int rtsp_setup_input_streams(AVFormatContext *s)
1296{
1297 RTSPState *rt = s->priv_data;
1298 RTSPMessageHeader reply1, *reply = &reply1;
1299 char cmd[1024];
1300 unsigned char *content = NULL;
1301 int ret;
1302
1303 /* describe the stream */
1304 snprintf(cmd, sizeof(cmd),
1305 "DESCRIBE %s RTSP/1.0\r\n"
1306 "Accept: application/sdp\r\n",
db76ca7f 1307 rt->control_uri);
e23d195d
MS
1308 if (rt->server_type == RTSP_SERVER_REAL) {
1309 /**
1310 * The Require: attribute is needed for proper streaming from
1311 * Realmedia servers.
1312 */
1313 av_strlcat(cmd,
1314 "Require: com.real.retain-entity-for-setup\r\n",
1315 sizeof(cmd));
1316 }
3307e6ea 1317 ff_rtsp_send_cmd(s, cmd, reply, &content);
e23d195d
MS
1318 if (!content)
1319 return AVERROR_INVALIDDATA;
1320 if (reply->status_code != RTSP_STATUS_OK) {
1321 av_freep(&content);
1322 return AVERROR_INVALIDDATA;
1323 }
1324
1325 /* now we got the SDP description, we parse it */
1326 ret = sdp_parse(s, (const char *)content);
1327 av_freep(&content);
1328 if (ret < 0)
1329 return AVERROR_INVALIDDATA;
1330
1331 return 0;
1332}
1333
26cb700c 1334static int rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
3e24c770
MS
1335{
1336 RTSPState *rt = s->priv_data;
1337 RTSPMessageHeader reply1, *reply = &reply1;
1338 char cmd[1024];
1339 int i;
1340 char *sdp;
26cb700c 1341 AVFormatContext sdp_ctx, *ctx_array[1];
3e24c770
MS
1342
1343 /* Announce the stream */
1344 snprintf(cmd, sizeof(cmd),
1345 "ANNOUNCE %s RTSP/1.0\r\n"
1346 "Content-Type: application/sdp\r\n",
db76ca7f 1347 rt->control_uri);
3e24c770
MS
1348 sdp = av_mallocz(8192);
1349 if (sdp == NULL)
1350 return AVERROR(ENOMEM);
26cb700c
MS
1351 /* We create the SDP based on the RTSP AVFormatContext where we
1352 * aren't allowed to change the filename field. (We create the SDP
1353 * based on the RTSP context since the contexts for the RTP streams
1354 * don't exist yet.) In order to specify a custom URL with the actual
1355 * peer IP instead of the originally specified hostname, we create
1356 * a temporary copy of the AVFormatContext, where the custom URL is set.
1357 *
1358 * FIXME: Create the SDP without copying the AVFormatContext.
1359 * This either requires setting up the RTP stream AVFormatContexts
1360 * already here (complicating things immensely) or getting a more
1361 * flexible SDP creation interface.
1362 */
1363 sdp_ctx = *s;
1364 ff_url_join(sdp_ctx.filename, sizeof(sdp_ctx.filename),
1365 "rtsp", NULL, addr, -1, NULL);
1366 ctx_array[0] = &sdp_ctx;
1367 if (avf_sdp_create(ctx_array, 1, sdp, 8192)) {
3e24c770
MS
1368 av_free(sdp);
1369 return AVERROR_INVALIDDATA;
1370 }
1371 av_log(s, AV_LOG_INFO, "SDP:\n%s\n", sdp);
3307e6ea 1372 ff_rtsp_send_cmd_with_content(s, cmd, reply, NULL, sdp, strlen(sdp));
3e24c770
MS
1373 av_free(sdp);
1374 if (reply->status_code != RTSP_STATUS_OK)
1375 return AVERROR_INVALIDDATA;
1376
1377 /* Set up the RTSPStreams for each AVStream */
1378 for (i = 0; i < s->nb_streams; i++) {
1379 RTSPStream *rtsp_st;
1380 AVStream *st = s->streams[i];
1381
1382 rtsp_st = av_mallocz(sizeof(RTSPStream));
1383 if (!rtsp_st)
1384 return AVERROR(ENOMEM);
1385 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
1386
1387 st->priv_data = rtsp_st;
1388 rtsp_st->stream_index = i;
1389
db76ca7f 1390 av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));
3e24c770
MS
1391 /* Note, this must match the relative uri set in the sdp content */
1392 av_strlcatf(rtsp_st->control_url, sizeof(rtsp_st->control_url),
1393 "/streamid=%d", i);
1394 }
1395
1396 return 0;
1397}
1398
3307e6ea 1399int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1400{
1401 RTSPState *rt = s->priv_data;
921da217
LB
1402 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1403 char *option_list, *option, *filename;
53620bba 1404 URLContext *rtsp_hd;
03f8fc08 1405 int port, err, tcp_fd;
a9e534d5 1406 RTSPMessageHeader reply1, *reply = &reply1;
90abbdba 1407 int lower_transport_mask = 0;
1cf151e9 1408 char real_challenge[64];
03f8fc08
MS
1409 struct sockaddr_storage peer;
1410 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1411
1412 if (!ff_network_init())
1413 return AVERROR(EIO);
c8965800 1414redirect:
53620bba 1415 /* extract hostname and port */
c5c6e67c 1416 ff_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1417 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897
RB
1418 if (*auth) {
1419 int auth_len = strlen(auth), b64_len = ((auth_len + 2) / 3) * 4 + 1;
1420
1421 if (!(rt->auth_b64 = av_malloc(b64_len)))
1422 return AVERROR(ENOMEM);
1423 if (!av_base64_encode(rt->auth_b64, b64_len, auth, auth_len)) {
1424 err = AVERROR(EINVAL);
1425 goto fail;
1426 }
1427 }
53620bba
RB
1428 if (port < 0)
1429 port = RTSP_DEFAULT_PORT;
1430
1431 /* search for options */
1432 option_list = strchr(path, '?');
1433 if (option_list) {
921da217 1434 filename = strchr(s->filename, '?');
c8965800 1435 while (option_list) {
53620bba 1436 /* move the option pointer */
921da217 1437 option = ++option_list;
53620bba
RB
1438 option_list = strchr(option_list, '&');
1439 if (option_list)
921da217
LB
1440 *option_list = 0;
1441
53620bba 1442 /* handle the options */
c8965800 1443 if (!strcmp(option, "udp")) {
90abbdba 1444 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1445 } else if (!strcmp(option, "multicast")) {
90abbdba 1446 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1447 } else if (!strcmp(option, "tcp")) {
90abbdba 1448 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
c8965800 1449 } else {
921da217
LB
1450 strcpy(++filename, option);
1451 filename += strlen(option);
1452 if (option_list) *filename = '&';
1453 }
53620bba 1454 }
921da217 1455 *filename = 0;
53620bba
RB
1456 }
1457
90abbdba 1458 if (!lower_transport_mask)
2a1d51c5 1459 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1460
3e24c770
MS
1461 if (s->oformat) {
1462 /* Only UDP output is supported at the moment. */
1463 lower_transport_mask &= 1 << RTSP_LOWER_TRANSPORT_UDP;
1464 if (!lower_transport_mask) {
1465 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
1466 "only UDP is supported for output.\n");
1467 err = AVERROR(EINVAL);
1468 goto fail;
1469 }
1470 }
1471
53620bba 1472 /* open the tcp connexion */
57b5555c 1473 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
f9337897
RB
1474 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) {
1475 err = AVERROR(EIO);
1476 goto fail;
1477 }
53620bba
RB
1478 rt->rtsp_hd = rtsp_hd;
1479 rt->seq = 0;
1480
03f8fc08
MS
1481 tcp_fd = url_get_file_handle(rtsp_hd);
1482 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1483 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1484 NULL, 0, NI_NUMERICHOST);
1485 }
1486
c8965800
RB
1487 /* request options supported by the server; this also detects server
1488 * type */
00eb13e0
AS
1489 av_strlcpy(rt->control_uri, s->filename,
1490 sizeof(rt->control_uri));
1cf151e9
RB
1491 for (rt->server_type = RTSP_SERVER_RTP;;) {
1492 snprintf(cmd, sizeof(cmd),
db76ca7f 1493 "OPTIONS %s RTSP/1.0\r\n", rt->control_uri);
2e889ae4 1494 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1495 av_strlcat(cmd,
1496 /**
1497 * The following entries are required for proper
1498 * streaming from a Realmedia server. They are
1499 * interdependent in some way although we currently
1500 * don't quite understand how. Values were copied
1501 * from mplayer SVN r23589.
1502 * @param CompanyID is a 16-byte ID in base64
1503 * @param ClientChallenge is a 16-byte ID in hex
1504 */
1505 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1506 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1507 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1508 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1509 sizeof(cmd));
3307e6ea 1510 ff_rtsp_send_cmd(s, cmd, reply, NULL);
1cf151e9
RB
1511 if (reply->status_code != RTSP_STATUS_OK) {
1512 err = AVERROR_INVALIDDATA;
1513 goto fail;
1514 }
1515
1516 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1517 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1518 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1519 continue;
7a86bafa
RB
1520 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1521 rt->server_type = RTSP_SERVER_WMS;
c8965800 1522 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1523 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1524 break;
1525 }
1526
3e24c770 1527 if (s->iformat)
2efc97c2 1528 err = rtsp_setup_input_streams(s);
3e24c770 1529 else
26cb700c 1530 err = rtsp_setup_output_streams(s, host);
e23d195d 1531 if (err)
53620bba 1532 goto fail;
53620bba 1533
8a8754d8 1534 do {
c8965800
RB
1535 int lower_transport = ff_log2_tab[lower_transport_mask &
1536 ~(lower_transport_mask - 1)];
8a8754d8 1537
90abbdba 1538 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1539 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1540 real_challenge : NULL);
8a8754d8 1541 if (err < 0)
7e6ca34f 1542 goto fail;
90abbdba
RB
1543 lower_transport_mask &= ~(1 << lower_transport);
1544 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1545 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1546 goto fail;
1547 }
1548 } while (err);
53620bba 1549
ff762d6e 1550 rt->state = RTSP_STATE_IDLE;
c8965800 1551 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1552 return 0;
1553 fail:
3307e6ea 1554 ff_rtsp_close_streams(s);
1617ad97 1555 url_close(rt->rtsp_hd);
35cfd646 1556 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1557 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1558 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1559 reply->status_code,
1560 s->filename);
1561 goto redirect;
1562 }
57b5555c 1563 ff_network_close();
1617ad97
FB
1564 return err;
1565}
6f5a3d0a 1566#endif
1617ad97 1567
6f5a3d0a 1568#if CONFIG_RTSP_DEMUXER
4280f9bb
MS
1569static int rtsp_read_header(AVFormatContext *s,
1570 AVFormatParameters *ap)
1571{
1572 RTSPState *rt = s->priv_data;
1573 int ret;
1574
3307e6ea 1575 ret = ff_rtsp_connect(s);
4280f9bb
MS
1576 if (ret)
1577 return ret;
1578
1579 if (ap->initial_pause) {
1580 /* do not start immediately */
1581 } else {
1582 if (rtsp_read_play(s) < 0) {
3307e6ea 1583 ff_rtsp_close_streams(s);
4280f9bb
MS
1584 url_close(rt->rtsp_hd);
1585 return AVERROR_INVALIDDATA;
1586 }
1587 }
1588
1589 return 0;
1590}
1591
0e59034e
RB
1592static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1593 uint8_t *buf, int buf_size)
1594{
1595 RTSPState *rt = s->priv_data;
1596 RTSPStream *rtsp_st;
1597 fd_set rfds;
1598 int fd, fd_max, n, i, ret, tcp_fd;
1599 struct timeval tv;
1600
c8965800 1601 for (;;) {
0e59034e
RB
1602 if (url_interrupt_cb())
1603 return AVERROR(EINTR);
1604 FD_ZERO(&rfds);
1605 if (rt->rtsp_hd) {
1606 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1607 FD_SET(tcp_fd, &rfds);
1608 } else {
1609 fd_max = 0;
1610 tcp_fd = -1;
1611 }
c8965800 1612 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1613 rtsp_st = rt->rtsp_streams[i];
1614 if (rtsp_st->rtp_handle) {
1615 /* currently, we cannot probe RTCP handle because of
1616 * blocking restrictions */
1617 fd = url_get_file_handle(rtsp_st->rtp_handle);
1618 if (fd > fd_max)
1619 fd_max = fd;
1620 FD_SET(fd, &rfds);
1621 }
1622 }
1623 tv.tv_sec = 0;
1624 tv.tv_usec = 100 * 1000;
1625 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1626 if (n > 0) {
c8965800 1627 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1628 rtsp_st = rt->rtsp_streams[i];
1629 if (rtsp_st->rtp_handle) {
1630 fd = url_get_file_handle(rtsp_st->rtp_handle);
1631 if (FD_ISSET(fd, &rfds)) {
1632 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1633 if (ret > 0) {
1634 *prtsp_st = rtsp_st;
1635 return ret;
1636 }
1637 }
1638 }
1639 }
1640#if CONFIG_RTSP_DEMUXER
27000636 1641 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1642 RTSPMessageHeader reply;
1643
3307e6ea 1644 ff_rtsp_read_reply(s, &reply, NULL, 0);
0e59034e 1645 /* XXX: parse message */
c02fd3d2 1646 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1647 return 0;
1648 }
1649#endif
1650 }
1651 }
1652}
1653
8b1ab7bf
FB
1654static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1655 uint8_t *buf, int buf_size)
1617ad97
FB
1656{
1657 RTSPState *rt = s->priv_data;
b6892136 1658 int id, len, i, ret;
1617ad97 1659 RTSPStream *rtsp_st;
1617ad97 1660
b6892136 1661#ifdef DEBUG_RTP_TCP
67c9cd69 1662 dprintf(s, "tcp_read_packet:\n");
b6892136 1663#endif
c8965800
RB
1664redo:
1665 for (;;) {
7e726132
RB
1666 RTSPMessageHeader reply;
1667
3307e6ea 1668 ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
7e726132 1669 if (ret == -1)
8b1ab7bf 1670 return -1;
7e726132 1671 if (ret == 1) /* received '$' */
1617ad97 1672 break;
7e726132 1673 /* XXX: parse message */
c02fd3d2 1674 if (rt->state != RTSP_STATE_STREAMING)
fccb1770 1675 return 0;
1617ad97 1676 }
0e848977 1677 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1678 if (ret != 3)
8b1ab7bf 1679 return -1;
c8965800 1680 id = buf[0];
80fb8234 1681 len = AV_RB16(buf + 1);
b6892136 1682#ifdef DEBUG_RTP_TCP
67c9cd69 1683 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1684#endif
8b1ab7bf 1685 if (len > buf_size || len < 12)
1617ad97
FB
1686 goto redo;
1687 /* get the data */
0e848977 1688 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1689 if (ret != len)
8b1ab7bf 1690 return -1;
985b05d3 1691 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1692 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1693 return -1;
115329f1 1694
1617ad97 1695 /* find the matching stream */
c8965800 1696 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1697 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1698 if (id >= rtsp_st->interleaved_min &&
1699 id <= rtsp_st->interleaved_max)
1617ad97
FB
1700 goto found;
1701 }
1702 goto redo;
c8965800 1703found:
8b1ab7bf
FB
1704 *prtsp_st = rtsp_st;
1705 return len;
1617ad97
FB
1706}
1707
0e59034e
RB
1708static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1709{
1710 RTSPState *rt = s->priv_data;
1711 int ret, len;
1712 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1713 RTSPStream *rtsp_st;
1714
1715 /* get next frames from the same RTP packet */
1716 if (rt->cur_transport_priv) {
c8965800 1717 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1718 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1719 } else
0e59034e
RB
1720 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1721 if (ret == 0) {
1722 rt->cur_transport_priv = NULL;
1723 return 0;
1724 } else if (ret == 1) {
1725 return 0;
c8965800 1726 } else
0e59034e 1727 rt->cur_transport_priv = NULL;
0e59034e
RB
1728 }
1729
1730 /* read next RTP packet */
1731 redo:
1732 switch(rt->lower_transport) {
1733 default:
1734#if CONFIG_RTSP_DEMUXER
1735 case RTSP_LOWER_TRANSPORT_TCP:
1736 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1737 break;
1738#endif
1739 case RTSP_LOWER_TRANSPORT_UDP:
1740 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1741 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1742 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1743 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1744 break;
1745 }
1746 if (len < 0)
1747 return len;
1748 if (len == 0)
1749 return AVERROR_EOF;
c8965800 1750 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1751 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
c8965800 1752 } else
0e59034e
RB
1753 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
1754 if (ret < 0)
1755 goto redo;
c8965800 1756 if (ret == 1)
0e59034e
RB
1757 /* more packets may follow, so we save the RTP context */
1758 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1759
1760 return ret;
1761}
1762
c8965800 1763static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1764{
1765 RTSPState *rt = s->priv_data;
98713182 1766 int ret;
30e79845
RB
1767 RTSPMessageHeader reply1, *reply = &reply1;
1768 char cmd[1024];
8b1ab7bf 1769
572c6a38 1770 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1771 int i;
572c6a38 1772 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1773
572c6a38
RB
1774 for (i = 0; i < s->nb_streams; i++)
1775 cache[i] = s->streams[i]->discard;
1776
1777 if (!rt->need_subscription) {
1778 if (memcmp (cache, rt->real_setup_cache,
1779 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1780 snprintf(cmd, sizeof(cmd),
7eaa646f
RB
1781 "SET_PARAMETER %s RTSP/1.0\r\n"
1782 "Unsubscribe: %s\r\n",
00eb13e0 1783 rt->control_uri, rt->last_subscription);
3307e6ea 1784 ff_rtsp_send_cmd(s, cmd, reply, NULL);
572c6a38
RB
1785 if (reply->status_code != RTSP_STATUS_OK)
1786 return AVERROR_INVALIDDATA;
1787 rt->need_subscription = 1;
1788 }
1256d16b 1789 }
1256d16b 1790
572c6a38
RB
1791 if (rt->need_subscription) {
1792 int r, rule_nr, first = 1;
1793
1794 memcpy(rt->real_setup_cache, cache,
1795 sizeof(enum AVDiscard) * s->nb_streams);
1796 rt->last_subscription[0] = 0;
1797
1798 snprintf(cmd, sizeof(cmd),
1799 "SET_PARAMETER %s RTSP/1.0\r\n"
1800 "Subscribe: ",
00eb13e0 1801 rt->control_uri);
572c6a38
RB
1802 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1803 rule_nr = 0;
1804 for (r = 0; r < s->nb_streams; r++) {
1805 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1806 if (s->streams[r]->discard != AVDISCARD_ALL) {
1807 if (!first)
1808 av_strlcat(rt->last_subscription, ",",
1809 sizeof(rt->last_subscription));
1810 ff_rdt_subscribe_rule(
1811 rt->last_subscription,
1812 sizeof(rt->last_subscription), i, rule_nr);
1813 first = 0;
1814 }
1815 rule_nr++;
1816 }
1817 }
1818 }
1819 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
3307e6ea 1820 ff_rtsp_send_cmd(s, cmd, reply, NULL);
572c6a38
RB
1821 if (reply->status_code != RTSP_STATUS_OK)
1822 return AVERROR_INVALIDDATA;
1823 rt->need_subscription = 0;
1824
c02fd3d2 1825 if (rt->state == RTSP_STATE_STREAMING)
572c6a38
RB
1826 rtsp_read_play (s);
1827 }
1256d16b
RB
1828 }
1829
d7250724 1830 ret = rtsp_fetch_packet(s, pkt);
c8965800 1831 if (ret < 0)
98713182 1832 return ret;
30e79845
RB
1833
1834 /* send dummy request to keep TCP connection alive */
1835 if ((rt->server_type == RTSP_SERVER_WMS ||
1836 rt->server_type == RTSP_SERVER_REAL) &&
1837 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1838 if (rt->server_type == RTSP_SERVER_WMS) {
1839 snprintf(cmd, sizeof(cmd) - 1,
1840 "GET_PARAMETER %s RTSP/1.0\r\n",
00eb13e0 1841 rt->control_uri);
3307e6ea 1842 ff_rtsp_send_cmd_async(s, cmd);
30e79845 1843 } else {
3307e6ea 1844 ff_rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n");
30e79845
RB
1845 }
1846 }
1847
8b1ab7bf 1848 return 0;
1617ad97
FB
1849}
1850
ff762d6e
FB
1851/* pause the stream */
1852static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1853{
ff762d6e 1854 RTSPState *rt = s->priv_data;
a9e534d5 1855 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1856 char cmd[1024];
1857
b7b8fc34 1858 rt = s->priv_data;
115329f1 1859
c02fd3d2 1860 if (rt->state != RTSP_STATE_STREAMING)
ff762d6e 1861 return 0;
2e889ae4 1862 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1863 snprintf(cmd, sizeof(cmd),
1864 "PAUSE %s RTSP/1.0\r\n",
00eb13e0 1865 rt->control_uri);
3307e6ea 1866 ff_rtsp_send_cmd(s, cmd, reply, NULL);
99b2ac07
RB
1867 if (reply->status_code != RTSP_STATUS_OK) {
1868 return -1;
1869 }
1256d16b 1870 }
5f86057f
RB
1871 rt->state = RTSP_STATE_PAUSED;
1872 return 0;
b7b8fc34
FB
1873}
1874
115329f1 1875static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1876 int64_t timestamp, int flags)
ff762d6e
FB
1877{
1878 RTSPState *rt = s->priv_data;
115329f1 1879
c8965800
RB
1880 rt->seek_timestamp = av_rescale_q(timestamp,
1881 s->streams[stream_index]->time_base,
1882 AV_TIME_BASE_Q);
ff762d6e
FB
1883 switch(rt->state) {
1884 default:
1885 case RTSP_STATE_IDLE:
1886 break;
c02fd3d2 1887 case RTSP_STATE_STREAMING:
ec606b36
LB
1888 if (rtsp_read_pause(s) != 0)
1889 return -1;
1890 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1891 if (rtsp_read_play(s) != 0)
1892 return -1;
1893 break;
1894 case RTSP_STATE_PAUSED:
1895 rt->state = RTSP_STATE_IDLE;
1896 break;
1897 }
1898 return 0;
1899}
1900
1617ad97
FB
1901static int rtsp_read_close(AVFormatContext *s)
1902{
1903 RTSPState *rt = s->priv_data;
1617ad97
FB
1904 char cmd[1024];
1905
b6892136 1906#if 0
1617ad97 1907 /* NOTE: it is valid to flush the buffer here */
90abbdba 1908 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1909 url_fclose(&rt->rtsp_gb);
1910 }
b6892136 1911#endif
115329f1 1912 snprintf(cmd, sizeof(cmd),
b6892136 1913 "TEARDOWN %s RTSP/1.0\r\n",
db76ca7f 1914 rt->control_uri);
3307e6ea 1915 ff_rtsp_send_cmd_async(s, cmd);
1617ad97 1916
3307e6ea 1917 ff_rtsp_close_streams(s);
1617ad97 1918 url_close(rt->rtsp_hd);
57b5555c 1919 ff_network_close();
1617ad97
FB
1920 return 0;
1921}
1922
d2a067d1 1923AVInputFormat rtsp_demuxer = {
1617ad97 1924 "rtsp",
bde15e74 1925 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1926 sizeof(RTSPState),
1927 rtsp_probe,
1928 rtsp_read_header,
1929 rtsp_read_packet,
1930 rtsp_read_close,
ff762d6e 1931 rtsp_read_seek,
bb76a117 1932 .flags = AVFMT_NOFILE,
ff762d6e
FB
1933 .read_play = rtsp_read_play,
1934 .read_pause = rtsp_read_pause,
1617ad97 1935};
96862926 1936#endif
1617ad97 1937
cb1fdc61 1938static int sdp_probe(AVProbeData *p1)
93ced3e8 1939{
0e1ceacd 1940 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1941
1942 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1943 while (p < p_end && *p != '\0') {
c8965800
RB
1944 if (p + sizeof("c=IN IP4") - 1 < p_end &&
1945 av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1946 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1947
c8965800 1948 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1949 if (++p >= p_end)
cb1fdc61 1950 break;
cb1fdc61
FB
1951 if (*p == '\r')
1952 p++;
1953 }
93ced3e8
FB
1954 return 0;
1955}
1956
1957#define SDP_MAX_SIZE 8192
1958
c8965800 1959static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1960{
8b1ab7bf 1961 RTSPState *rt = s->priv_data;
93ced3e8
FB
1962 RTSPStream *rtsp_st;
1963 int size, i, err;
1964 char *content;
1965 char url[1024];
1966
57b5555c
MS
1967 if (!ff_network_init())
1968 return AVERROR(EIO);
1969
93ced3e8
FB
1970 /* read the whole sdp file */
1971 /* XXX: better loading */
1972 content = av_malloc(SDP_MAX_SIZE);
899681cd 1973 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1974 if (size <= 0) {
1975 av_free(content);
1976 return AVERROR_INVALIDDATA;
1977 }
1978 content[size] ='\0';
1979
1980 sdp_parse(s, content);
1981 av_free(content);
1982
1983 /* open each RTP stream */
c8965800 1984 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1985 rtsp_st = rt->rtsp_streams[i];
115329f1 1986
57b5555c
MS
1987 ff_url_join(url, sizeof(url), "rtp", NULL,
1988 inet_ntoa(rtsp_st->sdp_ip), rtsp_st->sdp_port,
1989 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1990 rtsp_st->sdp_ttl);
dbf30963 1991 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1992 err = AVERROR_INVALIDDATA;
1993 goto fail;
1994 }
ee0cb67f 1995 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1996 goto fail;
93ced3e8
FB
1997 }
1998 return 0;
c8965800 1999fail:
3307e6ea 2000 ff_rtsp_close_streams(s);
57b5555c 2001 ff_network_close();
93ced3e8
FB
2002 return err;
2003}
2004
93ced3e8
FB
2005static int sdp_read_close(AVFormatContext *s)
2006{
3307e6ea 2007 ff_rtsp_close_streams(s);
57b5555c 2008 ff_network_close();
93ced3e8
FB
2009 return 0;
2010}
2011
ff70e601 2012AVInputFormat sdp_demuxer = {
93ced3e8 2013 "sdp",
bde15e74 2014 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
2015 sizeof(RTSPState),
2016 sdp_probe,
2017 sdp_read_header,
d7250724 2018 rtsp_fetch_packet,
93ced3e8
FB
2019 sdp_read_close,
2020};