Remove the word "experimental"
[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
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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
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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) {
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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 {
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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
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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++);
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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
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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{
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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{
c07c6f81 615 RTSPState *rt = s->priv_data;
fd450a51
MS
616 AVFormatContext *rtpctx;
617 int ret;
618 AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
619
620 if (!rtp_format)
621 return NULL;
622
623 /* Allocate an AVFormatContext for each output stream */
624 rtpctx = avformat_alloc_context();
625 if (!rtpctx)
626 return NULL;
627
628 rtpctx->oformat = rtp_format;
629 if (!av_new_stream(rtpctx, 0)) {
630 av_free(rtpctx);
631 return NULL;
632 }
633 /* Copy the max delay setting; the rtp muxer reads this. */
634 rtpctx->max_delay = s->max_delay;
635 /* Copy other stream parameters. */
636 rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
637
c07c6f81
MS
638 /* Set the synchronized start time. */
639 rtpctx->start_time_realtime = rt->start_time;
640
fd450a51
MS
641 /* Remove the local codec, link to the original codec
642 * context instead, to give the rtp muxer access to
643 * codec parameters. */
644 av_free(rtpctx->streams[0]->codec);
645 rtpctx->streams[0]->codec = st->codec;
646
647 url_fdopen(&rtpctx->pb, handle);
648 ret = av_write_header(rtpctx);
649
650 if (ret) {
651 url_fclose(rtpctx->pb);
652 av_free(rtpctx->streams[0]);
653 av_free(rtpctx);
654 return NULL;
655 }
656
657 /* Copy the RTP AVStream timebase back to the original AVStream */
658 st->time_base = rtpctx->streams[0]->time_base;
659 return rtpctx;
660}
661
c8965800 662static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
663{
664 RTSPState *rt = s->priv_data;
665 AVStream *st = NULL;
666
667 /* open the RTP context */
668 if (rtsp_st->stream_index >= 0)
669 st = s->streams[rtsp_st->stream_index];
670 if (!st)
671 s->ctx_flags |= AVFMTCTX_NOHEADER;
672
fd450a51
MS
673 if (s->oformat) {
674 rtsp_st->transport_priv = rtsp_rtp_mux_open(s, st, rtsp_st->rtp_handle);
675 /* Ownage of rtp_handle is passed to the rtp mux context */
676 rtsp_st->rtp_handle = NULL;
677 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
678 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
679 rtsp_st->dynamic_protocol_context,
680 rtsp_st->dynamic_handler);
681 else
682 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
683 rtsp_st->sdp_payload_type,
684 &rtsp_st->rtp_payload_data);
685
686 if (!rtsp_st->transport_priv) {
687 return AVERROR(ENOMEM);
688 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
c8965800 689 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
690 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
691 rtsp_st->dynamic_protocol_context,
692 rtsp_st->dynamic_handler);
693 }
694 }
695
696 return 0;
697}
698
6f5a3d0a 699#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1ced9da3
LA
700static int rtsp_probe(AVProbeData *p)
701{
702 if (av_strstart(p->filename, "rtsp:", NULL))
703 return AVPROBE_SCORE_MAX;
704 return 0;
705}
706
1617ad97
FB
707static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
708{
709 const char *p;
710 int v;
711
712 p = *pp;
713 skip_spaces(&p);
714 v = strtol(p, (char **)&p, 10);
715 if (*p == '-') {
716 p++;
717 *min_ptr = v;
718 v = strtol(p, (char **)&p, 10);
719 *max_ptr = v;
720 } else {
721 *min_ptr = v;
722 *max_ptr = v;
723 }
724 *pp = p;
725}
726
727/* XXX: only one transport specification is parsed */
a9e534d5 728static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
729{
730 char transport_protocol[16];
731 char profile[16];
732 char lower_transport[16];
733 char parameter[16];
734 RTSPTransportField *th;
735 char buf[256];
115329f1 736
1617ad97 737 reply->nb_transports = 0;
115329f1 738
c8965800 739 for (;;) {
1617ad97
FB
740 skip_spaces(&p);
741 if (*p == '\0')
742 break;
743
744 th = &reply->transports[reply->nb_transports];
745
115329f1 746 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 747 "/", &p);
e1502118 748 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
749 get_word_sep(profile, sizeof(profile), "/;,", &p);
750 lower_transport[0] = '\0';
751 /* rtp/avp/<protocol> */
752 if (*p == '/') {
7ecc634e
LB
753 get_word_sep(lower_transport, sizeof(lower_transport),
754 ";,", &p);
119b4668
RB
755 }
756 th->transport = RTSP_TRANSPORT_RTP;
757 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
758 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 759 /* x-pn-tng/<protocol> */
e1502118
LB
760 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
761 profile[0] = '\0';
119b4668 762 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 763 }
b6892136 764 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 765 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 766 else
90abbdba 767 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 768
1617ad97
FB
769 if (*p == ';')
770 p++;
771 /* get each parameter */
772 while (*p != '\0' && *p != ',') {
773 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
774 if (!strcmp(parameter, "port")) {
775 if (*p == '=') {
776 p++;
777 rtsp_parse_range(&th->port_min, &th->port_max, &p);
778 }
779 } else if (!strcmp(parameter, "client_port")) {
780 if (*p == '=') {
781 p++;
115329f1 782 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
783 &th->client_port_max, &p);
784 }
785 } else if (!strcmp(parameter, "server_port")) {
786 if (*p == '=') {
787 p++;
115329f1 788 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
789 &th->server_port_max, &p);
790 }
791 } else if (!strcmp(parameter, "interleaved")) {
792 if (*p == '=') {
793 p++;
115329f1 794 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
795 &th->interleaved_max, &p);
796 }
797 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
798 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
799 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
800 } else if (!strcmp(parameter, "ttl")) {
801 if (*p == '=') {
802 p++;
803 th->ttl = strtol(p, (char **)&p, 10);
804 }
805 } else if (!strcmp(parameter, "destination")) {
806 struct in_addr ipaddr;
807
808 if (*p == '=') {
809 p++;
810 get_word_sep(buf, sizeof(buf), ";,", &p);
ac11d562 811 if (ff_inet_aton(buf, &ipaddr))
1617ad97
FB
812 th->destination = ntohl(ipaddr.s_addr);
813 }
814 }
815 while (*p != ';' && *p != '\0' && *p != ',')
816 p++;
817 if (*p == ';')
818 p++;
819 }
820 if (*p == ',')
821 p++;
822
823 reply->nb_transports++;
824 }
825}
826
3307e6ea 827void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
828{
829 const char *p;
830
831 /* NOTE: we do case independent match for broken servers */
832 p = buf;
f7d78f36 833 if (av_stristart(p, "Session:", &p)) {
30e79845 834 int t;
1617ad97 835 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
836 if (av_stristart(p, ";timeout=", &p) &&
837 (t = strtol(p, NULL, 10)) > 0) {
838 reply->timeout = t;
839 }
f7d78f36 840 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 841 reply->content_length = strtol(p, NULL, 10);
f7d78f36 842 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 843 rtsp_parse_transport(reply, p);
f7d78f36 844 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 845 reply->seq = strtol(p, NULL, 10);
f7d78f36 846 } else if (av_stristart(p, "Range:", &p)) {
31693e00 847 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
848 } else if (av_stristart(p, "RealChallenge1:", &p)) {
849 skip_spaces(&p);
850 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
851 } else if (av_stristart(p, "Server:", &p)) {
852 skip_spaces(&p);
853 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
854 } else if (av_stristart(p, "Notice:", &p) ||
855 av_stristart(p, "X-Notice:", &p)) {
856 reply->notice = strtol(p, NULL, 10);
d243ba30
LB
857 } else if (av_stristart(p, "Location:", &p)) {
858 skip_spaces(&p);
859 av_strlcpy(reply->location, p , sizeof(reply->location));
1617ad97
FB
860 }
861}
862
b7b8fc34 863/* skip a RTP/TCP interleaved packet */
ec55edba 864void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
865{
866 RTSPState *rt = s->priv_data;
867 int ret, len, len1;
868 uint8_t buf[1024];
869
0e848977 870 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
871 if (ret != 3)
872 return;
80fb8234 873 len = AV_RB16(buf + 1);
67c9cd69
BC
874
875 dprintf(s, "skipping RTP packet len=%d\n", len);
876
b7b8fc34
FB
877 /* skip payload */
878 while (len > 0) {
879 len1 = len;
880 if (len1 > sizeof(buf))
881 len1 = sizeof(buf);
0e848977 882 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
883 if (ret != len1)
884 return;
885 len -= len1;
886 }
887}
1617ad97 888
3307e6ea 889int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
890 unsigned char **content_ptr,
891 int return_on_interleaved_data)
1617ad97
FB
892{
893 RTSPState *rt = s->priv_data;
894 char buf[4096], buf1[1024], *q;
895 unsigned char ch;
896 const char *p;
7e726132 897 int ret, content_length, line_count = 0;
1617ad97
FB
898 unsigned char *content = NULL;
899
d541a7d2 900 memset(reply, 0, sizeof(*reply));
1617ad97 901
1617ad97 902 /* parse reply (XXX: use buffers) */
1617ad97 903 rt->last_reply[0] = '\0';
c8965800 904 for (;;) {
1617ad97 905 q = buf;
c8965800 906 for (;;) {
0e848977 907 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 908#ifdef DEBUG_RTP_TCP
67c9cd69 909 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
910#endif
911 if (ret != 1)
912 return -1;
1617ad97
FB
913 if (ch == '\n')
914 break;
b7b8fc34
FB
915 if (ch == '$') {
916 /* XXX: only parse it if first char on line ? */
7e726132
RB
917 if (return_on_interleaved_data) {
918 return 1;
919 } else
ec55edba 920 ff_rtsp_skip_packet(s);
b7b8fc34 921 } else if (ch != '\r') {
1617ad97
FB
922 if ((q - buf) < sizeof(buf) - 1)
923 *q++ = ch;
924 }
925 }
926 *q = '\0';
67c9cd69
BC
927
928 dprintf(s, "line='%s'\n", buf);
929
1617ad97
FB
930 /* test if last line */
931 if (buf[0] == '\0')
932 break;
933 p = buf;
934 if (line_count == 0) {
935 /* get reply code */
936 get_word(buf1, sizeof(buf1), &p);
937 get_word(buf1, sizeof(buf1), &p);
938 reply->status_code = atoi(buf1);
939 } else {
3307e6ea 940 ff_rtsp_parse_line(reply, p);
75e61b0e
MR
941 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
942 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
943 }
944 line_count++;
945 }
115329f1 946
1617ad97 947 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 948 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 949
1617ad97
FB
950 content_length = reply->content_length;
951 if (content_length > 0) {
952 /* leave some room for a trailing '\0' (useful for simple parsing) */
953 content = av_malloc(content_length + 1);
0e848977 954 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
955 content[content_length] = '\0';
956 }
957 if (content_ptr)
958 *content_ptr = content;
e2e2e7dd
AB
959 else
960 av_free(content);
7e726132 961
fccb1770
RB
962 /* EOS */
963 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
964 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 965 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 966 rt->state = RTSP_STATE_IDLE;
c8965800 967 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 968 return AVERROR(EIO); /* data or server error */
c8965800 969 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
970 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
971 return AVERROR(EPERM);
972
7e726132 973 return 0;
1617ad97
FB
974}
975
3307e6ea 976void ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
93993933
MS
977 const char *cmd,
978 const unsigned char *send_content,
979 int send_content_length)
29b9f58b
RB
980{
981 RTSPState *rt = s->priv_data;
982 char buf[4096], buf1[1024];
983
984 rt->seq++;
985 av_strlcpy(buf, cmd, sizeof(buf));
986 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
987 av_strlcat(buf, buf1, sizeof(buf));
988 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
989 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
990 av_strlcat(buf, buf1, sizeof(buf));
991 }
f9337897
RB
992 if (rt->auth_b64)
993 av_strlcatf(buf, sizeof(buf),
ba93ea6d
RB
994 "Authorization: Basic %s\r\n",
995 rt->auth_b64);
dfd017bf
MS
996 if (send_content_length > 0 && send_content)
997 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 998 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69
BC
999
1000 dprintf(s, "Sending:\n%s--\n", buf);
1001
29b9f58b 1002 url_write(rt->rtsp_hd, buf, strlen(buf));
dfd017bf
MS
1003 if (send_content_length > 0 && send_content)
1004 url_write(rt->rtsp_hd, send_content, send_content_length);
30e79845
RB
1005 rt->last_cmd_time = av_gettime();
1006}
1007
3307e6ea 1008void ff_rtsp_send_cmd_async(AVFormatContext *s, const char *cmd)
dfd017bf 1009{
3307e6ea 1010 ff_rtsp_send_cmd_with_content_async(s, cmd, NULL, 0);
dfd017bf
MS
1011}
1012
3307e6ea 1013void ff_rtsp_send_cmd(AVFormatContext *s,
93993933
MS
1014 const char *cmd, RTSPMessageHeader *reply,
1015 unsigned char **content_ptr)
30e79845 1016{
3307e6ea 1017 ff_rtsp_send_cmd_async(s, cmd);
29b9f58b 1018
3307e6ea 1019 ff_rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
1020}
1021
3307e6ea 1022void ff_rtsp_send_cmd_with_content(AVFormatContext *s,
af037f80
MS
1023 const char *cmd,
1024 RTSPMessageHeader *reply,
1025 unsigned char **content_ptr,
1026 const unsigned char *send_content,
1027 int send_content_length)
dfd017bf 1028{
3307e6ea 1029 ff_rtsp_send_cmd_with_content_async(s, cmd, send_content, send_content_length);
dfd017bf 1030
3307e6ea 1031 ff_rtsp_read_reply(s, reply, content_ptr, 0);
dfd017bf
MS
1032}
1033
53620bba
RB
1034/**
1035 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
1036 */
c8965800
RB
1037static int make_setup_request(AVFormatContext *s, const char *host, int port,
1038 int lower_transport, const char *real_challenge)
1617ad97
FB
1039{
1040 RTSPState *rt = s->priv_data;
f830c9a4 1041 int rtx, j, i, err, interleave = 0;
1617ad97 1042 RTSPStream *rtsp_st;
a9e534d5 1043 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1044 char cmd[2048];
e9dea59f
RB
1045 const char *trans_pref;
1046
119b4668 1047 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1048 trans_pref = "x-pn-tng";
1049 else
1050 trans_pref = "RTP/AVP";
115329f1 1051
30e79845
RB
1052 /* default timeout: 1 minute */
1053 rt->timeout = 60;
1054
1617ad97
FB
1055 /* for each stream, make the setup request */
1056 /* XXX: we assume the same server is used for the control of each
c8965800 1057 * RTSP stream */
d1ccf0e0 1058
c8965800 1059 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1060 char transport[2048];
1061
f830c9a4
RB
1062 /**
1063 * WMS serves all UDP data over a single connection, the RTX, which
1064 * isn't necessarily the first in the SDP but has to be the first
1065 * to be set up, else the second/third SETUP will fail with a 461.
1066 */
1067 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1068 rt->server_type == RTSP_SERVER_WMS) {
1069 if (i == 0) {
1070 /* rtx first */
1071 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1072 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1073 if (len >= 4 &&
c8965800
RB
1074 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1075 "/rtx"))
f830c9a4
RB
1076 break;
1077 }
1078 if (rtx == rt->nb_rtsp_streams)
1079 return -1; /* no RTX found */
1080 rtsp_st = rt->rtsp_streams[rtx];
1081 } else
1082 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1083 } else
2fea9650 1084 rtsp_st = rt->rtsp_streams[i];
1617ad97 1085
1617ad97 1086 /* RTP/UDP */
90abbdba 1087 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1088 char buf[256];
85fb7b34 1089
f830c9a4
RB
1090 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1091 port = reply->transports[0].client_port_min;
1092 goto have_port;
1093 }
1094
85fb7b34 1095 /* first try in specified port range */
d1ccf0e0 1096 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1097 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1098 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1099 "?localport=%d", j);
c8965800
RB
1100 /* we will use two ports per rtp stream (rtp and rtcp) */
1101 j += 2;
1102 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1103 goto rtp_opened;
1104 }
1617ad97 1105 }
85fb7b34 1106
c8965800
RB
1107#if 0
1108 /* then try on any port */
1109 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1110 err = AVERROR_INVALIDDATA;
1111 goto fail;
1112 }
1113#endif
85fb7b34
FB
1114
1115 rtp_opened:
8b1ab7bf 1116 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1117 have_port:
0ad306bc 1118 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1119 "%s/UDP;", trans_pref);
1120 if (rt->server_type != RTSP_SERVER_REAL)
1121 av_strlcat(transport, "unicast;", sizeof(transport));
1122 av_strlcatf(transport, sizeof(transport),
1123 "client_port=%d", port);
f830c9a4
RB
1124 if (rt->transport == RTSP_TRANSPORT_RTP &&
1125 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1126 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1127 }
1128
1129 /* RTP/TCP */
90abbdba 1130 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1131 /** For WMS streams, the application streams are only used for
1132 * UDP. When trying to set it up for TCP streams, the server
1133 * will return an error. Therefore, we skip those streams. */
1134 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800
RB
1135 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1136 CODEC_TYPE_DATA)
090438cc 1137 continue;
0ad306bc 1138 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1139 "%s/TCP;", trans_pref);
1140 if (rt->server_type == RTSP_SERVER_WMS)
1141 av_strlcat(transport, "unicast;", sizeof(transport));
1142 av_strlcatf(transport, sizeof(transport),
1143 "interleaved=%d-%d",
1144 interleave, interleave + 1);
1145 interleave += 2;
1617ad97
FB
1146 }
1147
90abbdba 1148 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1149 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1150 "%s/UDP;multicast", trans_pref);
1617ad97 1151 }
69adcc4f
MS
1152 if (s->oformat) {
1153 av_strlcat(transport, ";mode=receive", sizeof(transport));
1154 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1155 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1156 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1157 snprintf(cmd, sizeof(cmd),
b6892136
FB
1158 "SETUP %s RTSP/1.0\r\n"
1159 "Transport: %s\r\n",
1617ad97 1160 rtsp_st->control_url, transport);
2e889ae4 1161 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1162 char real_res[41], real_csum[9];
1163 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1164 real_challenge);
1165 av_strlcatf(cmd, sizeof(cmd),
1166 "If-Match: %s\r\n"
1167 "RealChallenge2: %s, sd=%s\r\n",
1168 rt->session_id, real_res, real_csum);
1169 }
3307e6ea 1170 ff_rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1171 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1172 err = 1;
1173 goto fail;
7e6ca34f
RB
1174 } else if (reply->status_code != RTSP_STATUS_OK ||
1175 reply->nb_transports != 1) {
1617ad97
FB
1176 err = AVERROR_INVALIDDATA;
1177 goto fail;
1178 }
1179
1180 /* XXX: same protocol for all streams is required */
1181 if (i > 0) {
119b4668
RB
1182 if (reply->transports[0].lower_transport != rt->lower_transport ||
1183 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1184 err = AVERROR_INVALIDDATA;
1185 goto fail;
1186 }
1187 } else {
90abbdba 1188 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1189 rt->transport = reply->transports[0].transport;
1617ad97
FB
1190 }
1191
1192 /* close RTP connection if not choosen */
90abbdba
RB
1193 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1194 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1195 url_close(rtsp_st->rtp_handle);
1196 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1197 }
1198
90abbdba
RB
1199 switch(reply->transports[0].lower_transport) {
1200 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1201 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1202 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1203 break;
115329f1 1204
c8965800
RB
1205 case RTSP_LOWER_TRANSPORT_UDP: {
1206 char url[1024];
1207
1208 /* XXX: also use address if specified */
57b5555c
MS
1209 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1210 reply->transports[0].server_port_min, NULL);
c8965800
RB
1211 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1212 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1213 err = AVERROR_INVALIDDATA;
1214 goto fail;
1617ad97 1215 }
9c8fa20d
MS
1216 /* Try to initialize the connection state in a
1217 * potential NAT router by sending dummy packets.
1218 * RTP/RTCP dummy packets are used for RDT, too.
1219 */
30ff7c5c 1220 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat)
9c8fa20d 1221 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1222 break;
c8965800
RB
1223 }
1224 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1225 char url[1024];
1226 struct in_addr in;
1227 int port, ttl;
1228
1229 if (reply->transports[0].destination) {
1230 in.s_addr = htonl(reply->transports[0].destination);
1231 port = reply->transports[0].port_min;
1232 ttl = reply->transports[0].ttl;
1233 } else {
1234 in = rtsp_st->sdp_ip;
1235 port = rtsp_st->sdp_port;
1236 ttl = rtsp_st->sdp_ttl;
1237 }
57b5555c
MS
1238 ff_url_join(url, sizeof(url), "rtp", NULL, inet_ntoa(in),
1239 port, "?ttl=%d", ttl);
c8965800
RB
1240 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1241 err = AVERROR_INVALIDDATA;
1242 goto fail;
1617ad97
FB
1243 }
1244 break;
1245 }
c8965800 1246 }
d1ccf0e0 1247
ee0cb67f 1248 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1249 goto fail;
1617ad97
FB
1250 }
1251
30e79845
RB
1252 if (reply->timeout > 0)
1253 rt->timeout = reply->timeout;
1254
2e889ae4 1255 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1256 rt->need_subscription = 1;
1257
53620bba
RB
1258 return 0;
1259
1260fail:
c8965800 1261 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1262 if (rt->rtsp_streams[i]->rtp_handle) {
1263 url_close(rt->rtsp_streams[i]->rtp_handle);
1264 rt->rtsp_streams[i]->rtp_handle = NULL;
1265 }
1266 }
53620bba
RB
1267 return err;
1268}
1269
1ced9da3
LA
1270static int rtsp_read_play(AVFormatContext *s)
1271{
1272 RTSPState *rt = s->priv_data;
1273 RTSPMessageHeader reply1, *reply = &reply1;
1274 char cmd[1024];
1275
1276 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
1277
1278 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1279 if (rt->state == RTSP_STATE_PAUSED) {
1280 snprintf(cmd, sizeof(cmd),
1281 "PLAY %s RTSP/1.0\r\n",
00eb13e0 1282 rt->control_uri);
1ced9da3
LA
1283 } else {
1284 snprintf(cmd, sizeof(cmd),
1285 "PLAY %s RTSP/1.0\r\n"
1286 "Range: npt=%0.3f-\r\n",
00eb13e0 1287 rt->control_uri,
1ced9da3
LA
1288 (double)rt->seek_timestamp / AV_TIME_BASE);
1289 }
3307e6ea 1290 ff_rtsp_send_cmd(s, cmd, reply, NULL);
1ced9da3
LA
1291 if (reply->status_code != RTSP_STATUS_OK) {
1292 return -1;
1293 }
1294 }
c02fd3d2 1295 rt->state = RTSP_STATE_STREAMING;
1ced9da3
LA
1296 return 0;
1297}
1298
e23d195d
MS
1299static int rtsp_setup_input_streams(AVFormatContext *s)
1300{
1301 RTSPState *rt = s->priv_data;
1302 RTSPMessageHeader reply1, *reply = &reply1;
1303 char cmd[1024];
1304 unsigned char *content = NULL;
1305 int ret;
1306
1307 /* describe the stream */
1308 snprintf(cmd, sizeof(cmd),
1309 "DESCRIBE %s RTSP/1.0\r\n"
1310 "Accept: application/sdp\r\n",
db76ca7f 1311 rt->control_uri);
e23d195d
MS
1312 if (rt->server_type == RTSP_SERVER_REAL) {
1313 /**
1314 * The Require: attribute is needed for proper streaming from
1315 * Realmedia servers.
1316 */
1317 av_strlcat(cmd,
1318 "Require: com.real.retain-entity-for-setup\r\n",
1319 sizeof(cmd));
1320 }
3307e6ea 1321 ff_rtsp_send_cmd(s, cmd, reply, &content);
e23d195d
MS
1322 if (!content)
1323 return AVERROR_INVALIDDATA;
1324 if (reply->status_code != RTSP_STATUS_OK) {
1325 av_freep(&content);
1326 return AVERROR_INVALIDDATA;
1327 }
1328
1329 /* now we got the SDP description, we parse it */
1330 ret = sdp_parse(s, (const char *)content);
1331 av_freep(&content);
1332 if (ret < 0)
1333 return AVERROR_INVALIDDATA;
1334
1335 return 0;
1336}
1337
26cb700c 1338static int rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
3e24c770
MS
1339{
1340 RTSPState *rt = s->priv_data;
1341 RTSPMessageHeader reply1, *reply = &reply1;
1342 char cmd[1024];
1343 int i;
1344 char *sdp;
26cb700c 1345 AVFormatContext sdp_ctx, *ctx_array[1];
c07c6f81
MS
1346
1347 rt->start_time = av_gettime();
3e24c770
MS
1348
1349 /* Announce the stream */
1350 snprintf(cmd, sizeof(cmd),
1351 "ANNOUNCE %s RTSP/1.0\r\n"
1352 "Content-Type: application/sdp\r\n",
db76ca7f 1353 rt->control_uri);
3e24c770
MS
1354 sdp = av_mallocz(8192);
1355 if (sdp == NULL)
1356 return AVERROR(ENOMEM);
26cb700c
MS
1357 /* We create the SDP based on the RTSP AVFormatContext where we
1358 * aren't allowed to change the filename field. (We create the SDP
1359 * based on the RTSP context since the contexts for the RTP streams
1360 * don't exist yet.) In order to specify a custom URL with the actual
1361 * peer IP instead of the originally specified hostname, we create
1362 * a temporary copy of the AVFormatContext, where the custom URL is set.
1363 *
1364 * FIXME: Create the SDP without copying the AVFormatContext.
1365 * This either requires setting up the RTP stream AVFormatContexts
1366 * already here (complicating things immensely) or getting a more
1367 * flexible SDP creation interface.
1368 */
1369 sdp_ctx = *s;
1370 ff_url_join(sdp_ctx.filename, sizeof(sdp_ctx.filename),
1371 "rtsp", NULL, addr, -1, NULL);
1372 ctx_array[0] = &sdp_ctx;
1373 if (avf_sdp_create(ctx_array, 1, sdp, 8192)) {
3e24c770
MS
1374 av_free(sdp);
1375 return AVERROR_INVALIDDATA;
1376 }
1377 av_log(s, AV_LOG_INFO, "SDP:\n%s\n", sdp);
3307e6ea 1378 ff_rtsp_send_cmd_with_content(s, cmd, reply, NULL, sdp, strlen(sdp));
3e24c770
MS
1379 av_free(sdp);
1380 if (reply->status_code != RTSP_STATUS_OK)
1381 return AVERROR_INVALIDDATA;
1382
1383 /* Set up the RTSPStreams for each AVStream */
1384 for (i = 0; i < s->nb_streams; i++) {
1385 RTSPStream *rtsp_st;
1386 AVStream *st = s->streams[i];
1387
1388 rtsp_st = av_mallocz(sizeof(RTSPStream));
1389 if (!rtsp_st)
1390 return AVERROR(ENOMEM);
1391 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
1392
1393 st->priv_data = rtsp_st;
1394 rtsp_st->stream_index = i;
1395
db76ca7f 1396 av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));
3e24c770
MS
1397 /* Note, this must match the relative uri set in the sdp content */
1398 av_strlcatf(rtsp_st->control_url, sizeof(rtsp_st->control_url),
1399 "/streamid=%d", i);
1400 }
1401
1402 return 0;
1403}
1404
3307e6ea 1405int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1406{
1407 RTSPState *rt = s->priv_data;
921da217
LB
1408 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1409 char *option_list, *option, *filename;
53620bba 1410 URLContext *rtsp_hd;
03f8fc08 1411 int port, err, tcp_fd;
a9e534d5 1412 RTSPMessageHeader reply1, *reply = &reply1;
90abbdba 1413 int lower_transport_mask = 0;
1cf151e9 1414 char real_challenge[64];
03f8fc08
MS
1415 struct sockaddr_storage peer;
1416 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1417
1418 if (!ff_network_init())
1419 return AVERROR(EIO);
c8965800 1420redirect:
53620bba 1421 /* extract hostname and port */
c5c6e67c 1422 ff_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1423 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897
RB
1424 if (*auth) {
1425 int auth_len = strlen(auth), b64_len = ((auth_len + 2) / 3) * 4 + 1;
1426
1427 if (!(rt->auth_b64 = av_malloc(b64_len)))
1428 return AVERROR(ENOMEM);
1429 if (!av_base64_encode(rt->auth_b64, b64_len, auth, auth_len)) {
1430 err = AVERROR(EINVAL);
1431 goto fail;
1432 }
1433 }
53620bba
RB
1434 if (port < 0)
1435 port = RTSP_DEFAULT_PORT;
1436
1437 /* search for options */
1438 option_list = strchr(path, '?');
1439 if (option_list) {
921da217 1440 filename = strchr(s->filename, '?');
c8965800 1441 while (option_list) {
53620bba 1442 /* move the option pointer */
921da217 1443 option = ++option_list;
53620bba
RB
1444 option_list = strchr(option_list, '&');
1445 if (option_list)
921da217
LB
1446 *option_list = 0;
1447
53620bba 1448 /* handle the options */
c8965800 1449 if (!strcmp(option, "udp")) {
90abbdba 1450 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1451 } else if (!strcmp(option, "multicast")) {
90abbdba 1452 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1453 } else if (!strcmp(option, "tcp")) {
90abbdba 1454 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
c8965800 1455 } else {
921da217
LB
1456 strcpy(++filename, option);
1457 filename += strlen(option);
1458 if (option_list) *filename = '&';
1459 }
53620bba 1460 }
921da217 1461 *filename = 0;
53620bba
RB
1462 }
1463
90abbdba 1464 if (!lower_transport_mask)
2a1d51c5 1465 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1466
3e24c770
MS
1467 if (s->oformat) {
1468 /* Only UDP output is supported at the moment. */
1469 lower_transport_mask &= 1 << RTSP_LOWER_TRANSPORT_UDP;
1470 if (!lower_transport_mask) {
1471 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
1472 "only UDP is supported for output.\n");
1473 err = AVERROR(EINVAL);
1474 goto fail;
1475 }
1476 }
1477
53620bba 1478 /* open the tcp connexion */
57b5555c 1479 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
f9337897
RB
1480 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) {
1481 err = AVERROR(EIO);
1482 goto fail;
1483 }
53620bba
RB
1484 rt->rtsp_hd = rtsp_hd;
1485 rt->seq = 0;
1486
03f8fc08
MS
1487 tcp_fd = url_get_file_handle(rtsp_hd);
1488 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1489 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1490 NULL, 0, NI_NUMERICHOST);
1491 }
1492
c8965800
RB
1493 /* request options supported by the server; this also detects server
1494 * type */
00eb13e0
AS
1495 av_strlcpy(rt->control_uri, s->filename,
1496 sizeof(rt->control_uri));
1cf151e9
RB
1497 for (rt->server_type = RTSP_SERVER_RTP;;) {
1498 snprintf(cmd, sizeof(cmd),
db76ca7f 1499 "OPTIONS %s RTSP/1.0\r\n", rt->control_uri);
2e889ae4 1500 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1501 av_strlcat(cmd,
1502 /**
1503 * The following entries are required for proper
1504 * streaming from a Realmedia server. They are
1505 * interdependent in some way although we currently
1506 * don't quite understand how. Values were copied
1507 * from mplayer SVN r23589.
1508 * @param CompanyID is a 16-byte ID in base64
1509 * @param ClientChallenge is a 16-byte ID in hex
1510 */
1511 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1512 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1513 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1514 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1515 sizeof(cmd));
3307e6ea 1516 ff_rtsp_send_cmd(s, cmd, reply, NULL);
1cf151e9
RB
1517 if (reply->status_code != RTSP_STATUS_OK) {
1518 err = AVERROR_INVALIDDATA;
1519 goto fail;
1520 }
1521
1522 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1523 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1524 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1525 continue;
7a86bafa
RB
1526 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1527 rt->server_type = RTSP_SERVER_WMS;
c8965800 1528 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1529 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1530 break;
1531 }
1532
3e24c770 1533 if (s->iformat)
2efc97c2 1534 err = rtsp_setup_input_streams(s);
3e24c770 1535 else
26cb700c 1536 err = rtsp_setup_output_streams(s, host);
e23d195d 1537 if (err)
53620bba 1538 goto fail;
53620bba 1539
8a8754d8 1540 do {
c8965800
RB
1541 int lower_transport = ff_log2_tab[lower_transport_mask &
1542 ~(lower_transport_mask - 1)];
8a8754d8 1543
90abbdba 1544 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1545 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1546 real_challenge : NULL);
8a8754d8 1547 if (err < 0)
7e6ca34f 1548 goto fail;
90abbdba
RB
1549 lower_transport_mask &= ~(1 << lower_transport);
1550 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1551 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1552 goto fail;
1553 }
1554 } while (err);
53620bba 1555
ff762d6e 1556 rt->state = RTSP_STATE_IDLE;
c8965800 1557 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1558 return 0;
1559 fail:
3307e6ea 1560 ff_rtsp_close_streams(s);
1617ad97 1561 url_close(rt->rtsp_hd);
35cfd646 1562 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1563 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1564 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1565 reply->status_code,
1566 s->filename);
1567 goto redirect;
1568 }
57b5555c 1569 ff_network_close();
1617ad97
FB
1570 return err;
1571}
6f5a3d0a 1572#endif
1617ad97 1573
6f5a3d0a 1574#if CONFIG_RTSP_DEMUXER
4280f9bb
MS
1575static int rtsp_read_header(AVFormatContext *s,
1576 AVFormatParameters *ap)
1577{
1578 RTSPState *rt = s->priv_data;
1579 int ret;
1580
3307e6ea 1581 ret = ff_rtsp_connect(s);
4280f9bb
MS
1582 if (ret)
1583 return ret;
1584
1585 if (ap->initial_pause) {
1586 /* do not start immediately */
1587 } else {
1588 if (rtsp_read_play(s) < 0) {
3307e6ea 1589 ff_rtsp_close_streams(s);
4280f9bb
MS
1590 url_close(rt->rtsp_hd);
1591 return AVERROR_INVALIDDATA;
1592 }
1593 }
1594
1595 return 0;
1596}
1597
0e59034e
RB
1598static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1599 uint8_t *buf, int buf_size)
1600{
1601 RTSPState *rt = s->priv_data;
1602 RTSPStream *rtsp_st;
1603 fd_set rfds;
1604 int fd, fd_max, n, i, ret, tcp_fd;
1605 struct timeval tv;
1606
c8965800 1607 for (;;) {
0e59034e
RB
1608 if (url_interrupt_cb())
1609 return AVERROR(EINTR);
1610 FD_ZERO(&rfds);
1611 if (rt->rtsp_hd) {
1612 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1613 FD_SET(tcp_fd, &rfds);
1614 } else {
1615 fd_max = 0;
1616 tcp_fd = -1;
1617 }
c8965800 1618 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1619 rtsp_st = rt->rtsp_streams[i];
1620 if (rtsp_st->rtp_handle) {
1621 /* currently, we cannot probe RTCP handle because of
1622 * blocking restrictions */
1623 fd = url_get_file_handle(rtsp_st->rtp_handle);
1624 if (fd > fd_max)
1625 fd_max = fd;
1626 FD_SET(fd, &rfds);
1627 }
1628 }
1629 tv.tv_sec = 0;
1630 tv.tv_usec = 100 * 1000;
1631 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1632 if (n > 0) {
c8965800 1633 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1634 rtsp_st = rt->rtsp_streams[i];
1635 if (rtsp_st->rtp_handle) {
1636 fd = url_get_file_handle(rtsp_st->rtp_handle);
1637 if (FD_ISSET(fd, &rfds)) {
1638 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1639 if (ret > 0) {
1640 *prtsp_st = rtsp_st;
1641 return ret;
1642 }
1643 }
1644 }
1645 }
1646#if CONFIG_RTSP_DEMUXER
27000636 1647 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1648 RTSPMessageHeader reply;
1649
3307e6ea 1650 ff_rtsp_read_reply(s, &reply, NULL, 0);
0e59034e 1651 /* XXX: parse message */
c02fd3d2 1652 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1653 return 0;
1654 }
1655#endif
1656 }
1657 }
1658}
1659
8b1ab7bf
FB
1660static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1661 uint8_t *buf, int buf_size)
1617ad97
FB
1662{
1663 RTSPState *rt = s->priv_data;
b6892136 1664 int id, len, i, ret;
1617ad97 1665 RTSPStream *rtsp_st;
1617ad97 1666
b6892136 1667#ifdef DEBUG_RTP_TCP
67c9cd69 1668 dprintf(s, "tcp_read_packet:\n");
b6892136 1669#endif
c8965800
RB
1670redo:
1671 for (;;) {
7e726132
RB
1672 RTSPMessageHeader reply;
1673
3307e6ea 1674 ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
7e726132 1675 if (ret == -1)
8b1ab7bf 1676 return -1;
7e726132 1677 if (ret == 1) /* received '$' */
1617ad97 1678 break;
7e726132 1679 /* XXX: parse message */
c02fd3d2 1680 if (rt->state != RTSP_STATE_STREAMING)
fccb1770 1681 return 0;
1617ad97 1682 }
0e848977 1683 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1684 if (ret != 3)
8b1ab7bf 1685 return -1;
c8965800 1686 id = buf[0];
80fb8234 1687 len = AV_RB16(buf + 1);
b6892136 1688#ifdef DEBUG_RTP_TCP
67c9cd69 1689 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1690#endif
8b1ab7bf 1691 if (len > buf_size || len < 12)
1617ad97
FB
1692 goto redo;
1693 /* get the data */
0e848977 1694 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1695 if (ret != len)
8b1ab7bf 1696 return -1;
985b05d3 1697 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1698 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1699 return -1;
115329f1 1700
1617ad97 1701 /* find the matching stream */
c8965800 1702 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1703 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1704 if (id >= rtsp_st->interleaved_min &&
1705 id <= rtsp_st->interleaved_max)
1617ad97
FB
1706 goto found;
1707 }
1708 goto redo;
c8965800 1709found:
8b1ab7bf
FB
1710 *prtsp_st = rtsp_st;
1711 return len;
1617ad97
FB
1712}
1713
0e59034e
RB
1714static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1715{
1716 RTSPState *rt = s->priv_data;
1717 int ret, len;
1718 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1719 RTSPStream *rtsp_st;
1720
1721 /* get next frames from the same RTP packet */
1722 if (rt->cur_transport_priv) {
c8965800 1723 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1724 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1725 } else
0e59034e
RB
1726 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1727 if (ret == 0) {
1728 rt->cur_transport_priv = NULL;
1729 return 0;
1730 } else if (ret == 1) {
1731 return 0;
c8965800 1732 } else
0e59034e 1733 rt->cur_transport_priv = NULL;
0e59034e
RB
1734 }
1735
1736 /* read next RTP packet */
1737 redo:
1738 switch(rt->lower_transport) {
1739 default:
1740#if CONFIG_RTSP_DEMUXER
1741 case RTSP_LOWER_TRANSPORT_TCP:
1742 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1743 break;
1744#endif
1745 case RTSP_LOWER_TRANSPORT_UDP:
1746 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1747 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1748 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1749 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1750 break;
1751 }
1752 if (len < 0)
1753 return len;
1754 if (len == 0)
1755 return AVERROR_EOF;
c8965800 1756 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1757 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
c8965800 1758 } else
0e59034e
RB
1759 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
1760 if (ret < 0)
1761 goto redo;
c8965800 1762 if (ret == 1)
0e59034e
RB
1763 /* more packets may follow, so we save the RTP context */
1764 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1765
1766 return ret;
1767}
1768
c8965800 1769static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1770{
1771 RTSPState *rt = s->priv_data;
98713182 1772 int ret;
30e79845
RB
1773 RTSPMessageHeader reply1, *reply = &reply1;
1774 char cmd[1024];
8b1ab7bf 1775
572c6a38 1776 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1777 int i;
572c6a38 1778 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1779
572c6a38
RB
1780 for (i = 0; i < s->nb_streams; i++)
1781 cache[i] = s->streams[i]->discard;
1782
1783 if (!rt->need_subscription) {
1784 if (memcmp (cache, rt->real_setup_cache,
1785 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1786 snprintf(cmd, sizeof(cmd),
7eaa646f
RB
1787 "SET_PARAMETER %s RTSP/1.0\r\n"
1788 "Unsubscribe: %s\r\n",
00eb13e0 1789 rt->control_uri, rt->last_subscription);
3307e6ea 1790 ff_rtsp_send_cmd(s, cmd, reply, NULL);
572c6a38
RB
1791 if (reply->status_code != RTSP_STATUS_OK)
1792 return AVERROR_INVALIDDATA;
1793 rt->need_subscription = 1;
1794 }
1256d16b 1795 }
1256d16b 1796
572c6a38
RB
1797 if (rt->need_subscription) {
1798 int r, rule_nr, first = 1;
1799
1800 memcpy(rt->real_setup_cache, cache,
1801 sizeof(enum AVDiscard) * s->nb_streams);
1802 rt->last_subscription[0] = 0;
1803
1804 snprintf(cmd, sizeof(cmd),
1805 "SET_PARAMETER %s RTSP/1.0\r\n"
1806 "Subscribe: ",
00eb13e0 1807 rt->control_uri);
572c6a38
RB
1808 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1809 rule_nr = 0;
1810 for (r = 0; r < s->nb_streams; r++) {
1811 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1812 if (s->streams[r]->discard != AVDISCARD_ALL) {
1813 if (!first)
1814 av_strlcat(rt->last_subscription, ",",
1815 sizeof(rt->last_subscription));
1816 ff_rdt_subscribe_rule(
1817 rt->last_subscription,
1818 sizeof(rt->last_subscription), i, rule_nr);
1819 first = 0;
1820 }
1821 rule_nr++;
1822 }
1823 }
1824 }
1825 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
3307e6ea 1826 ff_rtsp_send_cmd(s, cmd, reply, NULL);
572c6a38
RB
1827 if (reply->status_code != RTSP_STATUS_OK)
1828 return AVERROR_INVALIDDATA;
1829 rt->need_subscription = 0;
1830
c02fd3d2 1831 if (rt->state == RTSP_STATE_STREAMING)
572c6a38
RB
1832 rtsp_read_play (s);
1833 }
1256d16b
RB
1834 }
1835
d7250724 1836 ret = rtsp_fetch_packet(s, pkt);
c8965800 1837 if (ret < 0)
98713182 1838 return ret;
30e79845
RB
1839
1840 /* send dummy request to keep TCP connection alive */
1841 if ((rt->server_type == RTSP_SERVER_WMS ||
1842 rt->server_type == RTSP_SERVER_REAL) &&
1843 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1844 if (rt->server_type == RTSP_SERVER_WMS) {
1845 snprintf(cmd, sizeof(cmd) - 1,
1846 "GET_PARAMETER %s RTSP/1.0\r\n",
00eb13e0 1847 rt->control_uri);
3307e6ea 1848 ff_rtsp_send_cmd_async(s, cmd);
30e79845 1849 } else {
3307e6ea 1850 ff_rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n");
30e79845
RB
1851 }
1852 }
1853
8b1ab7bf 1854 return 0;
1617ad97
FB
1855}
1856
ff762d6e
FB
1857/* pause the stream */
1858static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1859{
ff762d6e 1860 RTSPState *rt = s->priv_data;
a9e534d5 1861 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1862 char cmd[1024];
1863
b7b8fc34 1864 rt = s->priv_data;
115329f1 1865
c02fd3d2 1866 if (rt->state != RTSP_STATE_STREAMING)
ff762d6e 1867 return 0;
2e889ae4 1868 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1869 snprintf(cmd, sizeof(cmd),
1870 "PAUSE %s RTSP/1.0\r\n",
00eb13e0 1871 rt->control_uri);
3307e6ea 1872 ff_rtsp_send_cmd(s, cmd, reply, NULL);
99b2ac07
RB
1873 if (reply->status_code != RTSP_STATUS_OK) {
1874 return -1;
1875 }
1256d16b 1876 }
5f86057f
RB
1877 rt->state = RTSP_STATE_PAUSED;
1878 return 0;
b7b8fc34
FB
1879}
1880
115329f1 1881static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1882 int64_t timestamp, int flags)
ff762d6e
FB
1883{
1884 RTSPState *rt = s->priv_data;
115329f1 1885
c8965800
RB
1886 rt->seek_timestamp = av_rescale_q(timestamp,
1887 s->streams[stream_index]->time_base,
1888 AV_TIME_BASE_Q);
ff762d6e
FB
1889 switch(rt->state) {
1890 default:
1891 case RTSP_STATE_IDLE:
1892 break;
c02fd3d2 1893 case RTSP_STATE_STREAMING:
ec606b36
LB
1894 if (rtsp_read_pause(s) != 0)
1895 return -1;
1896 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1897 if (rtsp_read_play(s) != 0)
1898 return -1;
1899 break;
1900 case RTSP_STATE_PAUSED:
1901 rt->state = RTSP_STATE_IDLE;
1902 break;
1903 }
1904 return 0;
1905}
1906
1617ad97
FB
1907static int rtsp_read_close(AVFormatContext *s)
1908{
1909 RTSPState *rt = s->priv_data;
1617ad97
FB
1910 char cmd[1024];
1911
b6892136 1912#if 0
1617ad97 1913 /* NOTE: it is valid to flush the buffer here */
90abbdba 1914 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1915 url_fclose(&rt->rtsp_gb);
1916 }
b6892136 1917#endif
115329f1 1918 snprintf(cmd, sizeof(cmd),
b6892136 1919 "TEARDOWN %s RTSP/1.0\r\n",
db76ca7f 1920 rt->control_uri);
3307e6ea 1921 ff_rtsp_send_cmd_async(s, cmd);
1617ad97 1922
3307e6ea 1923 ff_rtsp_close_streams(s);
1617ad97 1924 url_close(rt->rtsp_hd);
57b5555c 1925 ff_network_close();
1617ad97
FB
1926 return 0;
1927}
1928
d2a067d1 1929AVInputFormat rtsp_demuxer = {
1617ad97 1930 "rtsp",
bde15e74 1931 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1932 sizeof(RTSPState),
1933 rtsp_probe,
1934 rtsp_read_header,
1935 rtsp_read_packet,
1936 rtsp_read_close,
ff762d6e 1937 rtsp_read_seek,
bb76a117 1938 .flags = AVFMT_NOFILE,
ff762d6e
FB
1939 .read_play = rtsp_read_play,
1940 .read_pause = rtsp_read_pause,
1617ad97 1941};
96862926 1942#endif
1617ad97 1943
cb1fdc61 1944static int sdp_probe(AVProbeData *p1)
93ced3e8 1945{
0e1ceacd 1946 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1947
1948 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1949 while (p < p_end && *p != '\0') {
c8965800
RB
1950 if (p + sizeof("c=IN IP4") - 1 < p_end &&
1951 av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1952 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1953
c8965800 1954 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1955 if (++p >= p_end)
cb1fdc61 1956 break;
cb1fdc61
FB
1957 if (*p == '\r')
1958 p++;
1959 }
93ced3e8
FB
1960 return 0;
1961}
1962
1963#define SDP_MAX_SIZE 8192
1964
c8965800 1965static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1966{
8b1ab7bf 1967 RTSPState *rt = s->priv_data;
93ced3e8
FB
1968 RTSPStream *rtsp_st;
1969 int size, i, err;
1970 char *content;
1971 char url[1024];
1972
57b5555c
MS
1973 if (!ff_network_init())
1974 return AVERROR(EIO);
1975
93ced3e8
FB
1976 /* read the whole sdp file */
1977 /* XXX: better loading */
1978 content = av_malloc(SDP_MAX_SIZE);
899681cd 1979 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1980 if (size <= 0) {
1981 av_free(content);
1982 return AVERROR_INVALIDDATA;
1983 }
1984 content[size] ='\0';
1985
1986 sdp_parse(s, content);
1987 av_free(content);
1988
1989 /* open each RTP stream */
c8965800 1990 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1991 rtsp_st = rt->rtsp_streams[i];
115329f1 1992
57b5555c
MS
1993 ff_url_join(url, sizeof(url), "rtp", NULL,
1994 inet_ntoa(rtsp_st->sdp_ip), rtsp_st->sdp_port,
1995 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1996 rtsp_st->sdp_ttl);
dbf30963 1997 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1998 err = AVERROR_INVALIDDATA;
1999 goto fail;
2000 }
ee0cb67f 2001 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2002 goto fail;
93ced3e8
FB
2003 }
2004 return 0;
c8965800 2005fail:
3307e6ea 2006 ff_rtsp_close_streams(s);
57b5555c 2007 ff_network_close();
93ced3e8
FB
2008 return err;
2009}
2010
93ced3e8
FB
2011static int sdp_read_close(AVFormatContext *s)
2012{
3307e6ea 2013 ff_rtsp_close_streams(s);
57b5555c 2014 ff_network_close();
93ced3e8
FB
2015 return 0;
2016}
2017
ff70e601 2018AVInputFormat sdp_demuxer = {
93ced3e8 2019 "sdp",
bde15e74 2020 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
2021 sizeof(RTSPState),
2022 sdp_probe,
2023 sdp_read_header,
d7250724 2024 rtsp_fetch_packet,
93ced3e8
FB
2025 sdp_read_close,
2026};