Make wmaprodec.c:decode_init() return AVERROR_INVALIDDATA /
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
1617ad97
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
1617ad97 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
1617ad97
FB
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1617ad97 20 */
245976da 21
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);
b7dc88fc
MS
587 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
588 uint8_t *ptr;
589 url_close_dyn_buf(rtpctx->pb, &ptr);
590 av_free(ptr);
591 } else {
685e76b5 592 url_fclose(rtpctx->pb);
b7dc88fc 593 }
f86f6656
MS
594 av_metadata_free(&rtpctx->streams[0]->metadata);
595 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
596 av_free(rtpctx->streams[0]);
597 av_free(rtpctx);
598 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
599 ff_rdt_parse_close(rtsp_st->transport_priv);
600 else
601 rtp_parse_close(rtsp_st->transport_priv);
602 }
603 if (rtsp_st->rtp_handle)
604 url_close(rtsp_st->rtp_handle);
605 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
606 rtsp_st->dynamic_handler->close(
607 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
608 }
609 }
610 av_free(rt->rtsp_streams);
611 if (rt->asf_ctx) {
612 av_close_input_stream (rt->asf_ctx);
613 rt->asf_ctx = NULL;
614 }
615 av_freep(&rt->auth_b64);
616}
617
5c7fd910
MS
618static void *rtsp_rtp_mux_open(AVFormatContext *s, AVStream *st,
619 URLContext *handle)
620{
c07c6f81 621 RTSPState *rt = s->priv_data;
fd450a51
MS
622 AVFormatContext *rtpctx;
623 int ret;
624 AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
625
626 if (!rtp_format)
627 return NULL;
628
629 /* Allocate an AVFormatContext for each output stream */
630 rtpctx = avformat_alloc_context();
631 if (!rtpctx)
632 return NULL;
633
634 rtpctx->oformat = rtp_format;
635 if (!av_new_stream(rtpctx, 0)) {
636 av_free(rtpctx);
637 return NULL;
638 }
639 /* Copy the max delay setting; the rtp muxer reads this. */
640 rtpctx->max_delay = s->max_delay;
641 /* Copy other stream parameters. */
642 rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
643
c07c6f81
MS
644 /* Set the synchronized start time. */
645 rtpctx->start_time_realtime = rt->start_time;
646
fd450a51
MS
647 /* Remove the local codec, link to the original codec
648 * context instead, to give the rtp muxer access to
649 * codec parameters. */
650 av_free(rtpctx->streams[0]->codec);
651 rtpctx->streams[0]->codec = st->codec;
652
b7dc88fc 653 if (handle) {
685e76b5 654 url_fdopen(&rtpctx->pb, handle);
b7dc88fc
MS
655 } else
656 url_open_dyn_packet_buf(&rtpctx->pb, RTSP_TCP_MAX_PACKET_SIZE);
fd450a51
MS
657 ret = av_write_header(rtpctx);
658
659 if (ret) {
b7dc88fc 660 if (handle) {
685e76b5 661 url_fclose(rtpctx->pb);
b7dc88fc
MS
662 } else {
663 uint8_t *ptr;
664 url_close_dyn_buf(rtpctx->pb, &ptr);
665 av_free(ptr);
666 }
fd450a51
MS
667 av_free(rtpctx->streams[0]);
668 av_free(rtpctx);
669 return NULL;
670 }
671
672 /* Copy the RTP AVStream timebase back to the original AVStream */
673 st->time_base = rtpctx->streams[0]->time_base;
674 return rtpctx;
675}
676
c8965800 677static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
678{
679 RTSPState *rt = s->priv_data;
680 AVStream *st = NULL;
681
682 /* open the RTP context */
683 if (rtsp_st->stream_index >= 0)
684 st = s->streams[rtsp_st->stream_index];
685 if (!st)
686 s->ctx_flags |= AVFMTCTX_NOHEADER;
687
fd450a51
MS
688 if (s->oformat) {
689 rtsp_st->transport_priv = rtsp_rtp_mux_open(s, st, rtsp_st->rtp_handle);
690 /* Ownage of rtp_handle is passed to the rtp mux context */
691 rtsp_st->rtp_handle = NULL;
692 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
693 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
694 rtsp_st->dynamic_protocol_context,
695 rtsp_st->dynamic_handler);
696 else
697 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
698 rtsp_st->sdp_payload_type,
699 &rtsp_st->rtp_payload_data);
700
701 if (!rtsp_st->transport_priv) {
702 return AVERROR(ENOMEM);
703 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
c8965800 704 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
705 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
706 rtsp_st->dynamic_protocol_context,
707 rtsp_st->dynamic_handler);
708 }
709 }
710
711 return 0;
712}
713
6f5a3d0a 714#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1ced9da3
LA
715static int rtsp_probe(AVProbeData *p)
716{
717 if (av_strstart(p->filename, "rtsp:", NULL))
718 return AVPROBE_SCORE_MAX;
719 return 0;
720}
721
1617ad97
FB
722static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
723{
724 const char *p;
725 int v;
726
727 p = *pp;
728 skip_spaces(&p);
729 v = strtol(p, (char **)&p, 10);
730 if (*p == '-') {
731 p++;
732 *min_ptr = v;
733 v = strtol(p, (char **)&p, 10);
734 *max_ptr = v;
735 } else {
736 *min_ptr = v;
737 *max_ptr = v;
738 }
739 *pp = p;
740}
741
742/* XXX: only one transport specification is parsed */
a9e534d5 743static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
744{
745 char transport_protocol[16];
746 char profile[16];
747 char lower_transport[16];
748 char parameter[16];
749 RTSPTransportField *th;
750 char buf[256];
115329f1 751
1617ad97 752 reply->nb_transports = 0;
115329f1 753
c8965800 754 for (;;) {
1617ad97
FB
755 skip_spaces(&p);
756 if (*p == '\0')
757 break;
758
759 th = &reply->transports[reply->nb_transports];
760
115329f1 761 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 762 "/", &p);
e1502118 763 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
764 get_word_sep(profile, sizeof(profile), "/;,", &p);
765 lower_transport[0] = '\0';
766 /* rtp/avp/<protocol> */
767 if (*p == '/') {
7ecc634e
LB
768 get_word_sep(lower_transport, sizeof(lower_transport),
769 ";,", &p);
119b4668
RB
770 }
771 th->transport = RTSP_TRANSPORT_RTP;
772 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
773 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 774 /* x-pn-tng/<protocol> */
e1502118
LB
775 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
776 profile[0] = '\0';
119b4668 777 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 778 }
b6892136 779 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 780 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 781 else
90abbdba 782 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 783
1617ad97
FB
784 if (*p == ';')
785 p++;
786 /* get each parameter */
787 while (*p != '\0' && *p != ',') {
788 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
789 if (!strcmp(parameter, "port")) {
790 if (*p == '=') {
791 p++;
792 rtsp_parse_range(&th->port_min, &th->port_max, &p);
793 }
794 } else if (!strcmp(parameter, "client_port")) {
795 if (*p == '=') {
796 p++;
115329f1 797 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
798 &th->client_port_max, &p);
799 }
800 } else if (!strcmp(parameter, "server_port")) {
801 if (*p == '=') {
802 p++;
115329f1 803 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
804 &th->server_port_max, &p);
805 }
806 } else if (!strcmp(parameter, "interleaved")) {
807 if (*p == '=') {
808 p++;
115329f1 809 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
810 &th->interleaved_max, &p);
811 }
812 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
813 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
814 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
815 } else if (!strcmp(parameter, "ttl")) {
816 if (*p == '=') {
817 p++;
818 th->ttl = strtol(p, (char **)&p, 10);
819 }
820 } else if (!strcmp(parameter, "destination")) {
821 struct in_addr ipaddr;
822
823 if (*p == '=') {
824 p++;
825 get_word_sep(buf, sizeof(buf), ";,", &p);
ac11d562 826 if (ff_inet_aton(buf, &ipaddr))
1617ad97
FB
827 th->destination = ntohl(ipaddr.s_addr);
828 }
829 }
830 while (*p != ';' && *p != '\0' && *p != ',')
831 p++;
832 if (*p == ';')
833 p++;
834 }
835 if (*p == ',')
836 p++;
837
838 reply->nb_transports++;
839 }
840}
841
3307e6ea 842void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
843{
844 const char *p;
845
846 /* NOTE: we do case independent match for broken servers */
847 p = buf;
f7d78f36 848 if (av_stristart(p, "Session:", &p)) {
30e79845 849 int t;
1617ad97 850 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
851 if (av_stristart(p, ";timeout=", &p) &&
852 (t = strtol(p, NULL, 10)) > 0) {
853 reply->timeout = t;
854 }
f7d78f36 855 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 856 reply->content_length = strtol(p, NULL, 10);
f7d78f36 857 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 858 rtsp_parse_transport(reply, p);
f7d78f36 859 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 860 reply->seq = strtol(p, NULL, 10);
f7d78f36 861 } else if (av_stristart(p, "Range:", &p)) {
31693e00 862 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
863 } else if (av_stristart(p, "RealChallenge1:", &p)) {
864 skip_spaces(&p);
865 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
866 } else if (av_stristart(p, "Server:", &p)) {
867 skip_spaces(&p);
868 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
869 } else if (av_stristart(p, "Notice:", &p) ||
870 av_stristart(p, "X-Notice:", &p)) {
871 reply->notice = strtol(p, NULL, 10);
d243ba30
LB
872 } else if (av_stristart(p, "Location:", &p)) {
873 skip_spaces(&p);
874 av_strlcpy(reply->location, p , sizeof(reply->location));
1617ad97
FB
875 }
876}
877
b7b8fc34 878/* skip a RTP/TCP interleaved packet */
ec55edba 879void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
880{
881 RTSPState *rt = s->priv_data;
882 int ret, len, len1;
883 uint8_t buf[1024];
884
0e848977 885 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
886 if (ret != 3)
887 return;
80fb8234 888 len = AV_RB16(buf + 1);
67c9cd69
BC
889
890 dprintf(s, "skipping RTP packet len=%d\n", len);
891
b7b8fc34
FB
892 /* skip payload */
893 while (len > 0) {
894 len1 = len;
895 if (len1 > sizeof(buf))
896 len1 = sizeof(buf);
0e848977 897 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
898 if (ret != len1)
899 return;
900 len -= len1;
901 }
902}
1617ad97 903
3307e6ea 904int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
905 unsigned char **content_ptr,
906 int return_on_interleaved_data)
1617ad97
FB
907{
908 RTSPState *rt = s->priv_data;
909 char buf[4096], buf1[1024], *q;
910 unsigned char ch;
911 const char *p;
7e726132 912 int ret, content_length, line_count = 0;
1617ad97
FB
913 unsigned char *content = NULL;
914
d541a7d2 915 memset(reply, 0, sizeof(*reply));
1617ad97 916
1617ad97 917 /* parse reply (XXX: use buffers) */
1617ad97 918 rt->last_reply[0] = '\0';
c8965800 919 for (;;) {
1617ad97 920 q = buf;
c8965800 921 for (;;) {
0e848977 922 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 923#ifdef DEBUG_RTP_TCP
67c9cd69 924 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
925#endif
926 if (ret != 1)
927 return -1;
1617ad97
FB
928 if (ch == '\n')
929 break;
b7b8fc34
FB
930 if (ch == '$') {
931 /* XXX: only parse it if first char on line ? */
7e726132
RB
932 if (return_on_interleaved_data) {
933 return 1;
934 } else
ec55edba 935 ff_rtsp_skip_packet(s);
b7b8fc34 936 } else if (ch != '\r') {
1617ad97
FB
937 if ((q - buf) < sizeof(buf) - 1)
938 *q++ = ch;
939 }
940 }
941 *q = '\0';
67c9cd69
BC
942
943 dprintf(s, "line='%s'\n", buf);
944
1617ad97
FB
945 /* test if last line */
946 if (buf[0] == '\0')
947 break;
948 p = buf;
949 if (line_count == 0) {
950 /* get reply code */
951 get_word(buf1, sizeof(buf1), &p);
952 get_word(buf1, sizeof(buf1), &p);
953 reply->status_code = atoi(buf1);
954 } else {
3307e6ea 955 ff_rtsp_parse_line(reply, p);
75e61b0e
MR
956 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
957 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
958 }
959 line_count++;
960 }
115329f1 961
1617ad97 962 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 963 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 964
1617ad97
FB
965 content_length = reply->content_length;
966 if (content_length > 0) {
967 /* leave some room for a trailing '\0' (useful for simple parsing) */
968 content = av_malloc(content_length + 1);
0e848977 969 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
970 content[content_length] = '\0';
971 }
972 if (content_ptr)
973 *content_ptr = content;
e2e2e7dd
AB
974 else
975 av_free(content);
7e726132 976
7ed8211b
LB
977 if (rt->seq != reply->seq) {
978 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
979 rt->seq, reply->seq);
980 }
981
fccb1770
RB
982 /* EOS */
983 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
984 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 985 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 986 rt->state = RTSP_STATE_IDLE;
c8965800 987 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 988 return AVERROR(EIO); /* data or server error */
c8965800 989 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
990 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
991 return AVERROR(EPERM);
992
7e726132 993 return 0;
1617ad97
FB
994}
995
3307e6ea 996void ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
93993933
MS
997 const char *cmd,
998 const unsigned char *send_content,
999 int send_content_length)
29b9f58b
RB
1000{
1001 RTSPState *rt = s->priv_data;
1002 char buf[4096], buf1[1024];
1003
1004 rt->seq++;
1005 av_strlcpy(buf, cmd, sizeof(buf));
1006 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
1007 av_strlcat(buf, buf1, sizeof(buf));
1008 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
1009 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
1010 av_strlcat(buf, buf1, sizeof(buf));
1011 }
f9337897
RB
1012 if (rt->auth_b64)
1013 av_strlcatf(buf, sizeof(buf),
ba93ea6d
RB
1014 "Authorization: Basic %s\r\n",
1015 rt->auth_b64);
dfd017bf
MS
1016 if (send_content_length > 0 && send_content)
1017 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1018 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69
BC
1019
1020 dprintf(s, "Sending:\n%s--\n", buf);
1021
29b9f58b 1022 url_write(rt->rtsp_hd, buf, strlen(buf));
dfd017bf
MS
1023 if (send_content_length > 0 && send_content)
1024 url_write(rt->rtsp_hd, send_content, send_content_length);
30e79845
RB
1025 rt->last_cmd_time = av_gettime();
1026}
1027
3307e6ea 1028void ff_rtsp_send_cmd_async(AVFormatContext *s, const char *cmd)
dfd017bf 1029{
3307e6ea 1030 ff_rtsp_send_cmd_with_content_async(s, cmd, NULL, 0);
dfd017bf
MS
1031}
1032
3307e6ea 1033void ff_rtsp_send_cmd(AVFormatContext *s,
93993933
MS
1034 const char *cmd, RTSPMessageHeader *reply,
1035 unsigned char **content_ptr)
30e79845 1036{
b1cc5540 1037 ff_rtsp_send_cmd_with_content(s, cmd, reply, content_ptr, NULL, 0);
29b9f58b
RB
1038}
1039
3307e6ea 1040void ff_rtsp_send_cmd_with_content(AVFormatContext *s,
e9fea405
MS
1041 const char *cmd,
1042 RTSPMessageHeader *reply,
1043 unsigned char **content_ptr,
1044 const unsigned char *send_content,
1045 int send_content_length)
dfd017bf 1046{
3307e6ea 1047 ff_rtsp_send_cmd_with_content_async(s, cmd, send_content, send_content_length);
dfd017bf 1048
3307e6ea 1049 ff_rtsp_read_reply(s, reply, content_ptr, 0);
dfd017bf
MS
1050}
1051
53620bba
RB
1052/**
1053 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
1054 */
c8965800
RB
1055static int make_setup_request(AVFormatContext *s, const char *host, int port,
1056 int lower_transport, const char *real_challenge)
1617ad97
FB
1057{
1058 RTSPState *rt = s->priv_data;
f830c9a4 1059 int rtx, j, i, err, interleave = 0;
1617ad97 1060 RTSPStream *rtsp_st;
a9e534d5 1061 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1062 char cmd[2048];
e9dea59f
RB
1063 const char *trans_pref;
1064
119b4668 1065 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1066 trans_pref = "x-pn-tng";
1067 else
1068 trans_pref = "RTP/AVP";
115329f1 1069
30e79845
RB
1070 /* default timeout: 1 minute */
1071 rt->timeout = 60;
1072
1617ad97
FB
1073 /* for each stream, make the setup request */
1074 /* XXX: we assume the same server is used for the control of each
c8965800 1075 * RTSP stream */
d1ccf0e0 1076
c8965800 1077 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1078 char transport[2048];
1079
f830c9a4
RB
1080 /**
1081 * WMS serves all UDP data over a single connection, the RTX, which
1082 * isn't necessarily the first in the SDP but has to be the first
1083 * to be set up, else the second/third SETUP will fail with a 461.
1084 */
1085 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1086 rt->server_type == RTSP_SERVER_WMS) {
1087 if (i == 0) {
1088 /* rtx first */
1089 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1090 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1091 if (len >= 4 &&
c8965800
RB
1092 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1093 "/rtx"))
f830c9a4
RB
1094 break;
1095 }
1096 if (rtx == rt->nb_rtsp_streams)
1097 return -1; /* no RTX found */
1098 rtsp_st = rt->rtsp_streams[rtx];
1099 } else
1100 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1101 } else
2fea9650 1102 rtsp_st = rt->rtsp_streams[i];
1617ad97 1103
1617ad97 1104 /* RTP/UDP */
90abbdba 1105 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1106 char buf[256];
85fb7b34 1107
f830c9a4
RB
1108 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1109 port = reply->transports[0].client_port_min;
1110 goto have_port;
1111 }
1112
85fb7b34 1113 /* first try in specified port range */
d1ccf0e0 1114 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1115 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1116 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1117 "?localport=%d", j);
c8965800
RB
1118 /* we will use two ports per rtp stream (rtp and rtcp) */
1119 j += 2;
1120 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1121 goto rtp_opened;
1122 }
1617ad97 1123 }
85fb7b34 1124
c8965800
RB
1125#if 0
1126 /* then try on any port */
1127 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1128 err = AVERROR_INVALIDDATA;
1129 goto fail;
1130 }
1131#endif
85fb7b34
FB
1132
1133 rtp_opened:
8b1ab7bf 1134 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1135 have_port:
0ad306bc 1136 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1137 "%s/UDP;", trans_pref);
1138 if (rt->server_type != RTSP_SERVER_REAL)
1139 av_strlcat(transport, "unicast;", sizeof(transport));
1140 av_strlcatf(transport, sizeof(transport),
1141 "client_port=%d", port);
f830c9a4
RB
1142 if (rt->transport == RTSP_TRANSPORT_RTP &&
1143 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1144 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1145 }
1146
1147 /* RTP/TCP */
90abbdba 1148 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1149 /** For WMS streams, the application streams are only used for
1150 * UDP. When trying to set it up for TCP streams, the server
1151 * will return an error. Therefore, we skip those streams. */
1152 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800
RB
1153 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1154 CODEC_TYPE_DATA)
090438cc 1155 continue;
0ad306bc 1156 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1157 "%s/TCP;", trans_pref);
1158 if (rt->server_type == RTSP_SERVER_WMS)
1159 av_strlcat(transport, "unicast;", sizeof(transport));
1160 av_strlcatf(transport, sizeof(transport),
1161 "interleaved=%d-%d",
1162 interleave, interleave + 1);
1163 interleave += 2;
1617ad97
FB
1164 }
1165
90abbdba 1166 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1167 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1168 "%s/UDP;multicast", trans_pref);
1617ad97 1169 }
69adcc4f
MS
1170 if (s->oformat) {
1171 av_strlcat(transport, ";mode=receive", sizeof(transport));
1172 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1173 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1174 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1175 snprintf(cmd, sizeof(cmd),
b6892136
FB
1176 "SETUP %s RTSP/1.0\r\n"
1177 "Transport: %s\r\n",
1617ad97 1178 rtsp_st->control_url, transport);
2e889ae4 1179 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1180 char real_res[41], real_csum[9];
1181 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1182 real_challenge);
1183 av_strlcatf(cmd, sizeof(cmd),
1184 "If-Match: %s\r\n"
1185 "RealChallenge2: %s, sd=%s\r\n",
1186 rt->session_id, real_res, real_csum);
1187 }
3307e6ea 1188 ff_rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1189 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1190 err = 1;
1191 goto fail;
7e6ca34f
RB
1192 } else if (reply->status_code != RTSP_STATUS_OK ||
1193 reply->nb_transports != 1) {
1617ad97
FB
1194 err = AVERROR_INVALIDDATA;
1195 goto fail;
1196 }
1197
1198 /* XXX: same protocol for all streams is required */
1199 if (i > 0) {
119b4668
RB
1200 if (reply->transports[0].lower_transport != rt->lower_transport ||
1201 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1202 err = AVERROR_INVALIDDATA;
1203 goto fail;
1204 }
1205 } else {
90abbdba 1206 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1207 rt->transport = reply->transports[0].transport;
1617ad97
FB
1208 }
1209
1210 /* close RTP connection if not choosen */
90abbdba
RB
1211 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1212 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1213 url_close(rtsp_st->rtp_handle);
1214 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1215 }
1216
90abbdba
RB
1217 switch(reply->transports[0].lower_transport) {
1218 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1219 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1220 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1221 break;
115329f1 1222
c8965800
RB
1223 case RTSP_LOWER_TRANSPORT_UDP: {
1224 char url[1024];
1225
1226 /* XXX: also use address if specified */
57b5555c
MS
1227 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1228 reply->transports[0].server_port_min, NULL);
c8965800
RB
1229 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1230 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1231 err = AVERROR_INVALIDDATA;
1232 goto fail;
1617ad97 1233 }
9c8fa20d
MS
1234 /* Try to initialize the connection state in a
1235 * potential NAT router by sending dummy packets.
1236 * RTP/RTCP dummy packets are used for RDT, too.
1237 */
30ff7c5c 1238 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat)
9c8fa20d 1239 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1240 break;
c8965800
RB
1241 }
1242 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1243 char url[1024];
1244 struct in_addr in;
1245 int port, ttl;
1246
1247 if (reply->transports[0].destination) {
1248 in.s_addr = htonl(reply->transports[0].destination);
1249 port = reply->transports[0].port_min;
1250 ttl = reply->transports[0].ttl;
1251 } else {
1252 in = rtsp_st->sdp_ip;
1253 port = rtsp_st->sdp_port;
1254 ttl = rtsp_st->sdp_ttl;
1255 }
57b5555c
MS
1256 ff_url_join(url, sizeof(url), "rtp", NULL, inet_ntoa(in),
1257 port, "?ttl=%d", ttl);
c8965800
RB
1258 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1259 err = AVERROR_INVALIDDATA;
1260 goto fail;
1617ad97
FB
1261 }
1262 break;
1263 }
c8965800 1264 }
d1ccf0e0 1265
ee0cb67f 1266 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1267 goto fail;
1617ad97
FB
1268 }
1269
30e79845
RB
1270 if (reply->timeout > 0)
1271 rt->timeout = reply->timeout;
1272
2e889ae4 1273 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1274 rt->need_subscription = 1;
1275
53620bba
RB
1276 return 0;
1277
1278fail:
c8965800 1279 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1280 if (rt->rtsp_streams[i]->rtp_handle) {
1281 url_close(rt->rtsp_streams[i]->rtp_handle);
1282 rt->rtsp_streams[i]->rtp_handle = NULL;
1283 }
1284 }
53620bba
RB
1285 return err;
1286}
1287
1ced9da3
LA
1288static int rtsp_read_play(AVFormatContext *s)
1289{
1290 RTSPState *rt = s->priv_data;
1291 RTSPMessageHeader reply1, *reply = &reply1;
1292 char cmd[1024];
1293
1294 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
1295
1296 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1297 if (rt->state == RTSP_STATE_PAUSED) {
1298 snprintf(cmd, sizeof(cmd),
1299 "PLAY %s RTSP/1.0\r\n",
00eb13e0 1300 rt->control_uri);
1ced9da3
LA
1301 } else {
1302 snprintf(cmd, sizeof(cmd),
1303 "PLAY %s RTSP/1.0\r\n"
1304 "Range: npt=%0.3f-\r\n",
00eb13e0 1305 rt->control_uri,
1ced9da3
LA
1306 (double)rt->seek_timestamp / AV_TIME_BASE);
1307 }
3307e6ea 1308 ff_rtsp_send_cmd(s, cmd, reply, NULL);
1ced9da3
LA
1309 if (reply->status_code != RTSP_STATUS_OK) {
1310 return -1;
1311 }
1312 }
c02fd3d2 1313 rt->state = RTSP_STATE_STREAMING;
1ced9da3
LA
1314 return 0;
1315}
1316
6e69f6c4 1317static int rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
e23d195d
MS
1318{
1319 RTSPState *rt = s->priv_data;
e23d195d
MS
1320 char cmd[1024];
1321 unsigned char *content = NULL;
1322 int ret;
1323
1324 /* describe the stream */
1325 snprintf(cmd, sizeof(cmd),
1326 "DESCRIBE %s RTSP/1.0\r\n"
1327 "Accept: application/sdp\r\n",
db76ca7f 1328 rt->control_uri);
e23d195d
MS
1329 if (rt->server_type == RTSP_SERVER_REAL) {
1330 /**
1331 * The Require: attribute is needed for proper streaming from
1332 * Realmedia servers.
1333 */
1334 av_strlcat(cmd,
1335 "Require: com.real.retain-entity-for-setup\r\n",
1336 sizeof(cmd));
1337 }
3307e6ea 1338 ff_rtsp_send_cmd(s, cmd, reply, &content);
e23d195d
MS
1339 if (!content)
1340 return AVERROR_INVALIDDATA;
1341 if (reply->status_code != RTSP_STATUS_OK) {
1342 av_freep(&content);
1343 return AVERROR_INVALIDDATA;
1344 }
1345
1346 /* now we got the SDP description, we parse it */
1347 ret = sdp_parse(s, (const char *)content);
1348 av_freep(&content);
1349 if (ret < 0)
1350 return AVERROR_INVALIDDATA;
1351
1352 return 0;
1353}
1354
26cb700c 1355static int rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
3e24c770
MS
1356{
1357 RTSPState *rt = s->priv_data;
1358 RTSPMessageHeader reply1, *reply = &reply1;
1359 char cmd[1024];
1360 int i;
1361 char *sdp;
26cb700c 1362 AVFormatContext sdp_ctx, *ctx_array[1];
c07c6f81
MS
1363
1364 rt->start_time = av_gettime();
3e24c770
MS
1365
1366 /* Announce the stream */
1367 snprintf(cmd, sizeof(cmd),
1368 "ANNOUNCE %s RTSP/1.0\r\n"
1369 "Content-Type: application/sdp\r\n",
db76ca7f 1370 rt->control_uri);
3e24c770
MS
1371 sdp = av_mallocz(8192);
1372 if (sdp == NULL)
1373 return AVERROR(ENOMEM);
26cb700c
MS
1374 /* We create the SDP based on the RTSP AVFormatContext where we
1375 * aren't allowed to change the filename field. (We create the SDP
1376 * based on the RTSP context since the contexts for the RTP streams
1377 * don't exist yet.) In order to specify a custom URL with the actual
1378 * peer IP instead of the originally specified hostname, we create
1379 * a temporary copy of the AVFormatContext, where the custom URL is set.
1380 *
1381 * FIXME: Create the SDP without copying the AVFormatContext.
1382 * This either requires setting up the RTP stream AVFormatContexts
1383 * already here (complicating things immensely) or getting a more
1384 * flexible SDP creation interface.
1385 */
1386 sdp_ctx = *s;
1387 ff_url_join(sdp_ctx.filename, sizeof(sdp_ctx.filename),
1388 "rtsp", NULL, addr, -1, NULL);
1389 ctx_array[0] = &sdp_ctx;
1390 if (avf_sdp_create(ctx_array, 1, sdp, 8192)) {
3e24c770
MS
1391 av_free(sdp);
1392 return AVERROR_INVALIDDATA;
1393 }
1394 av_log(s, AV_LOG_INFO, "SDP:\n%s\n", sdp);
3307e6ea 1395 ff_rtsp_send_cmd_with_content(s, cmd, reply, NULL, sdp, strlen(sdp));
3e24c770
MS
1396 av_free(sdp);
1397 if (reply->status_code != RTSP_STATUS_OK)
1398 return AVERROR_INVALIDDATA;
1399
1400 /* Set up the RTSPStreams for each AVStream */
1401 for (i = 0; i < s->nb_streams; i++) {
1402 RTSPStream *rtsp_st;
1403 AVStream *st = s->streams[i];
1404
1405 rtsp_st = av_mallocz(sizeof(RTSPStream));
1406 if (!rtsp_st)
1407 return AVERROR(ENOMEM);
1408 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
1409
1410 st->priv_data = rtsp_st;
1411 rtsp_st->stream_index = i;
1412
db76ca7f 1413 av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));
3e24c770
MS
1414 /* Note, this must match the relative uri set in the sdp content */
1415 av_strlcatf(rtsp_st->control_url, sizeof(rtsp_st->control_url),
1416 "/streamid=%d", i);
1417 }
1418
1419 return 0;
1420}
1421
3307e6ea 1422int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1423{
1424 RTSPState *rt = s->priv_data;
921da217
LB
1425 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1426 char *option_list, *option, *filename;
53620bba 1427 URLContext *rtsp_hd;
03f8fc08 1428 int port, err, tcp_fd;
a9e534d5 1429 RTSPMessageHeader reply1, *reply = &reply1;
90abbdba 1430 int lower_transport_mask = 0;
1cf151e9 1431 char real_challenge[64];
03f8fc08
MS
1432 struct sockaddr_storage peer;
1433 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1434
1435 if (!ff_network_init())
1436 return AVERROR(EIO);
c8965800 1437redirect:
53620bba 1438 /* extract hostname and port */
c5c6e67c 1439 ff_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1440 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897
RB
1441 if (*auth) {
1442 int auth_len = strlen(auth), b64_len = ((auth_len + 2) / 3) * 4 + 1;
1443
1444 if (!(rt->auth_b64 = av_malloc(b64_len)))
1445 return AVERROR(ENOMEM);
1446 if (!av_base64_encode(rt->auth_b64, b64_len, auth, auth_len)) {
1447 err = AVERROR(EINVAL);
1448 goto fail;
1449 }
1450 }
53620bba
RB
1451 if (port < 0)
1452 port = RTSP_DEFAULT_PORT;
1453
1454 /* search for options */
602eb779 1455 option_list = strrchr(path, '?');
53620bba 1456 if (option_list) {
2a21adf9
MS
1457 /* Strip out the RTSP specific options, write out the rest of
1458 * the options back into the same string. */
1459 filename = option_list;
c8965800 1460 while (option_list) {
53620bba 1461 /* move the option pointer */
921da217 1462 option = ++option_list;
53620bba
RB
1463 option_list = strchr(option_list, '&');
1464 if (option_list)
921da217
LB
1465 *option_list = 0;
1466
53620bba 1467 /* handle the options */
c8965800 1468 if (!strcmp(option, "udp")) {
7a033e08 1469 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1470 } else if (!strcmp(option, "multicast")) {
7a033e08 1471 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1472 } else if (!strcmp(option, "tcp")) {
7a033e08 1473 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
c8965800 1474 } else {
2a21adf9
MS
1475 /* Write options back into the buffer, using memmove instead
1476 * of strcpy since the strings may overlap. */
1477 int len = strlen(option);
1478 memmove(++filename, option, len);
1479 filename += len;
921da217
LB
1480 if (option_list) *filename = '&';
1481 }
53620bba 1482 }
921da217 1483 *filename = 0;
53620bba
RB
1484 }
1485
90abbdba 1486 if (!lower_transport_mask)
2a1d51c5 1487 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1488
3e24c770 1489 if (s->oformat) {
b7dc88fc
MS
1490 /* Only UDP or TCP - UDP multicast isn't supported. */
1491 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1492 (1 << RTSP_LOWER_TRANSPORT_TCP);
3e24c770
MS
1493 if (!lower_transport_mask) {
1494 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1495 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1496 err = AVERROR(EINVAL);
1497 goto fail;
1498 }
1499 }
1500
53620bba 1501 /* open the tcp connexion */
57b5555c 1502 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
f9337897
RB
1503 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) {
1504 err = AVERROR(EIO);
1505 goto fail;
1506 }
53620bba
RB
1507 rt->rtsp_hd = rtsp_hd;
1508 rt->seq = 0;
1509
03f8fc08
MS
1510 tcp_fd = url_get_file_handle(rtsp_hd);
1511 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1512 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1513 NULL, 0, NI_NUMERICHOST);
1514 }
1515
2a21adf9
MS
1516 /* Construct the URI used in request; this is similar to s->filename,
1517 * but with authentication credentials removed and RTSP specific options
1518 * stripped out. */
1519 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1520 host, port, "%s", path);
c8965800
RB
1521 /* request options supported by the server; this also detects server
1522 * type */
1cf151e9
RB
1523 for (rt->server_type = RTSP_SERVER_RTP;;) {
1524 snprintf(cmd, sizeof(cmd),
db76ca7f 1525 "OPTIONS %s RTSP/1.0\r\n", rt->control_uri);
2e889ae4 1526 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1527 av_strlcat(cmd,
1528 /**
1529 * The following entries are required for proper
1530 * streaming from a Realmedia server. They are
1531 * interdependent in some way although we currently
1532 * don't quite understand how. Values were copied
1533 * from mplayer SVN r23589.
1534 * @param CompanyID is a 16-byte ID in base64
1535 * @param ClientChallenge is a 16-byte ID in hex
1536 */
1537 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1538 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1539 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1540 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1541 sizeof(cmd));
3307e6ea 1542 ff_rtsp_send_cmd(s, cmd, reply, NULL);
1cf151e9
RB
1543 if (reply->status_code != RTSP_STATUS_OK) {
1544 err = AVERROR_INVALIDDATA;
1545 goto fail;
1546 }
1547
1548 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1549 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1550 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1551 continue;
7a86bafa
RB
1552 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1553 rt->server_type = RTSP_SERVER_WMS;
c8965800 1554 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1555 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1556 break;
1557 }
1558
3e24c770 1559 if (s->iformat)
6e69f6c4 1560 err = rtsp_setup_input_streams(s, reply);
3e24c770 1561 else
26cb700c 1562 err = rtsp_setup_output_streams(s, host);
e23d195d 1563 if (err)
53620bba 1564 goto fail;
53620bba 1565
8a8754d8 1566 do {
c8965800
RB
1567 int lower_transport = ff_log2_tab[lower_transport_mask &
1568 ~(lower_transport_mask - 1)];
8a8754d8 1569
90abbdba 1570 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1571 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1572 real_challenge : NULL);
8a8754d8 1573 if (err < 0)
7e6ca34f 1574 goto fail;
90abbdba
RB
1575 lower_transport_mask &= ~(1 << lower_transport);
1576 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1577 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1578 goto fail;
1579 }
1580 } while (err);
53620bba 1581
ff762d6e 1582 rt->state = RTSP_STATE_IDLE;
c8965800 1583 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1584 return 0;
1585 fail:
3307e6ea 1586 ff_rtsp_close_streams(s);
1617ad97 1587 url_close(rt->rtsp_hd);
35cfd646 1588 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1589 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1590 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1591 reply->status_code,
1592 s->filename);
1593 goto redirect;
1594 }
57b5555c 1595 ff_network_close();
1617ad97
FB
1596 return err;
1597}
6f5a3d0a 1598#endif
1617ad97 1599
6f5a3d0a 1600#if CONFIG_RTSP_DEMUXER
4280f9bb
MS
1601static int rtsp_read_header(AVFormatContext *s,
1602 AVFormatParameters *ap)
1603{
1604 RTSPState *rt = s->priv_data;
1605 int ret;
1606
3307e6ea 1607 ret = ff_rtsp_connect(s);
4280f9bb
MS
1608 if (ret)
1609 return ret;
1610
1611 if (ap->initial_pause) {
1612 /* do not start immediately */
1613 } else {
1614 if (rtsp_read_play(s) < 0) {
3307e6ea 1615 ff_rtsp_close_streams(s);
4280f9bb
MS
1616 url_close(rt->rtsp_hd);
1617 return AVERROR_INVALIDDATA;
1618 }
1619 }
1620
1621 return 0;
1622}
1623
0e59034e
RB
1624static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1625 uint8_t *buf, int buf_size)
1626{
1627 RTSPState *rt = s->priv_data;
1628 RTSPStream *rtsp_st;
1629 fd_set rfds;
1630 int fd, fd_max, n, i, ret, tcp_fd;
1631 struct timeval tv;
1632
c8965800 1633 for (;;) {
0e59034e
RB
1634 if (url_interrupt_cb())
1635 return AVERROR(EINTR);
1636 FD_ZERO(&rfds);
1637 if (rt->rtsp_hd) {
1638 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1639 FD_SET(tcp_fd, &rfds);
1640 } else {
1641 fd_max = 0;
1642 tcp_fd = -1;
1643 }
c8965800 1644 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1645 rtsp_st = rt->rtsp_streams[i];
1646 if (rtsp_st->rtp_handle) {
1647 /* currently, we cannot probe RTCP handle because of
1648 * blocking restrictions */
1649 fd = url_get_file_handle(rtsp_st->rtp_handle);
1650 if (fd > fd_max)
1651 fd_max = fd;
1652 FD_SET(fd, &rfds);
1653 }
1654 }
1655 tv.tv_sec = 0;
1656 tv.tv_usec = 100 * 1000;
1657 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1658 if (n > 0) {
c8965800 1659 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1660 rtsp_st = rt->rtsp_streams[i];
1661 if (rtsp_st->rtp_handle) {
1662 fd = url_get_file_handle(rtsp_st->rtp_handle);
1663 if (FD_ISSET(fd, &rfds)) {
1664 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1665 if (ret > 0) {
1666 *prtsp_st = rtsp_st;
1667 return ret;
1668 }
1669 }
1670 }
1671 }
1672#if CONFIG_RTSP_DEMUXER
27000636 1673 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1674 RTSPMessageHeader reply;
1675
3032276b
MS
1676 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1677 if (ret < 0)
1678 return ret;
0e59034e 1679 /* XXX: parse message */
c02fd3d2 1680 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1681 return 0;
1682 }
1683#endif
1684 }
1685 }
1686}
1687
8b1ab7bf
FB
1688static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1689 uint8_t *buf, int buf_size)
1617ad97
FB
1690{
1691 RTSPState *rt = s->priv_data;
b6892136 1692 int id, len, i, ret;
1617ad97 1693 RTSPStream *rtsp_st;
1617ad97 1694
b6892136 1695#ifdef DEBUG_RTP_TCP
67c9cd69 1696 dprintf(s, "tcp_read_packet:\n");
b6892136 1697#endif
c8965800
RB
1698redo:
1699 for (;;) {
7e726132
RB
1700 RTSPMessageHeader reply;
1701
3307e6ea 1702 ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
7e726132 1703 if (ret == -1)
8b1ab7bf 1704 return -1;
7e726132 1705 if (ret == 1) /* received '$' */
1617ad97 1706 break;
7e726132 1707 /* XXX: parse message */
c02fd3d2 1708 if (rt->state != RTSP_STATE_STREAMING)
fccb1770 1709 return 0;
1617ad97 1710 }
0e848977 1711 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1712 if (ret != 3)
8b1ab7bf 1713 return -1;
c8965800 1714 id = buf[0];
80fb8234 1715 len = AV_RB16(buf + 1);
b6892136 1716#ifdef DEBUG_RTP_TCP
67c9cd69 1717 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1718#endif
8b1ab7bf 1719 if (len > buf_size || len < 12)
1617ad97
FB
1720 goto redo;
1721 /* get the data */
0e848977 1722 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1723 if (ret != len)
8b1ab7bf 1724 return -1;
985b05d3 1725 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1726 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1727 return -1;
115329f1 1728
1617ad97 1729 /* find the matching stream */
c8965800 1730 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1731 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1732 if (id >= rtsp_st->interleaved_min &&
1733 id <= rtsp_st->interleaved_max)
1617ad97
FB
1734 goto found;
1735 }
1736 goto redo;
c8965800 1737found:
8b1ab7bf
FB
1738 *prtsp_st = rtsp_st;
1739 return len;
1617ad97
FB
1740}
1741
0e59034e
RB
1742static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1743{
1744 RTSPState *rt = s->priv_data;
1745 int ret, len;
1746 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1747 RTSPStream *rtsp_st;
1748
1749 /* get next frames from the same RTP packet */
1750 if (rt->cur_transport_priv) {
c8965800 1751 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1752 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1753 } else
0e59034e
RB
1754 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1755 if (ret == 0) {
1756 rt->cur_transport_priv = NULL;
1757 return 0;
1758 } else if (ret == 1) {
1759 return 0;
c8965800 1760 } else
0e59034e 1761 rt->cur_transport_priv = NULL;
0e59034e
RB
1762 }
1763
1764 /* read next RTP packet */
1765 redo:
1766 switch(rt->lower_transport) {
1767 default:
1768#if CONFIG_RTSP_DEMUXER
1769 case RTSP_LOWER_TRANSPORT_TCP:
1770 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1771 break;
1772#endif
1773 case RTSP_LOWER_TRANSPORT_UDP:
1774 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1775 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1776 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1777 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1778 break;
1779 }
1780 if (len < 0)
1781 return len;
1782 if (len == 0)
1783 return AVERROR_EOF;
c8965800 1784 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1785 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
c8965800 1786 } else
0e59034e
RB
1787 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
1788 if (ret < 0)
1789 goto redo;
c8965800 1790 if (ret == 1)
0e59034e
RB
1791 /* more packets may follow, so we save the RTP context */
1792 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1793
1794 return ret;
1795}
1796
c8965800 1797static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1798{
1799 RTSPState *rt = s->priv_data;
98713182 1800 int ret;
30e79845
RB
1801 RTSPMessageHeader reply1, *reply = &reply1;
1802 char cmd[1024];
8b1ab7bf 1803
572c6a38 1804 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1805 int i;
572c6a38 1806 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1807
572c6a38
RB
1808 for (i = 0; i < s->nb_streams; i++)
1809 cache[i] = s->streams[i]->discard;
1810
1811 if (!rt->need_subscription) {
1812 if (memcmp (cache, rt->real_setup_cache,
1813 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1814 snprintf(cmd, sizeof(cmd),
7eaa646f
RB
1815 "SET_PARAMETER %s RTSP/1.0\r\n"
1816 "Unsubscribe: %s\r\n",
00eb13e0 1817 rt->control_uri, rt->last_subscription);
3307e6ea 1818 ff_rtsp_send_cmd(s, cmd, reply, NULL);
572c6a38
RB
1819 if (reply->status_code != RTSP_STATUS_OK)
1820 return AVERROR_INVALIDDATA;
1821 rt->need_subscription = 1;
1822 }
1256d16b 1823 }
1256d16b 1824
572c6a38
RB
1825 if (rt->need_subscription) {
1826 int r, rule_nr, first = 1;
1827
1828 memcpy(rt->real_setup_cache, cache,
1829 sizeof(enum AVDiscard) * s->nb_streams);
1830 rt->last_subscription[0] = 0;
1831
1832 snprintf(cmd, sizeof(cmd),
1833 "SET_PARAMETER %s RTSP/1.0\r\n"
1834 "Subscribe: ",
00eb13e0 1835 rt->control_uri);
572c6a38
RB
1836 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1837 rule_nr = 0;
1838 for (r = 0; r < s->nb_streams; r++) {
1839 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1840 if (s->streams[r]->discard != AVDISCARD_ALL) {
1841 if (!first)
1842 av_strlcat(rt->last_subscription, ",",
1843 sizeof(rt->last_subscription));
1844 ff_rdt_subscribe_rule(
1845 rt->last_subscription,
1846 sizeof(rt->last_subscription), i, rule_nr);
1847 first = 0;
1848 }
1849 rule_nr++;
1850 }
1851 }
1852 }
1853 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
3307e6ea 1854 ff_rtsp_send_cmd(s, cmd, reply, NULL);
572c6a38
RB
1855 if (reply->status_code != RTSP_STATUS_OK)
1856 return AVERROR_INVALIDDATA;
1857 rt->need_subscription = 0;
1858
c02fd3d2 1859 if (rt->state == RTSP_STATE_STREAMING)
572c6a38
RB
1860 rtsp_read_play (s);
1861 }
1256d16b
RB
1862 }
1863
d7250724 1864 ret = rtsp_fetch_packet(s, pkt);
c8965800 1865 if (ret < 0)
98713182 1866 return ret;
30e79845
RB
1867
1868 /* send dummy request to keep TCP connection alive */
1869 if ((rt->server_type == RTSP_SERVER_WMS ||
1870 rt->server_type == RTSP_SERVER_REAL) &&
1871 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1872 if (rt->server_type == RTSP_SERVER_WMS) {
1873 snprintf(cmd, sizeof(cmd) - 1,
1874 "GET_PARAMETER %s RTSP/1.0\r\n",
00eb13e0 1875 rt->control_uri);
3307e6ea 1876 ff_rtsp_send_cmd_async(s, cmd);
30e79845 1877 } else {
3307e6ea 1878 ff_rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n");
30e79845
RB
1879 }
1880 }
1881
8b1ab7bf 1882 return 0;
1617ad97
FB
1883}
1884
ff762d6e
FB
1885/* pause the stream */
1886static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1887{
ff762d6e 1888 RTSPState *rt = s->priv_data;
a9e534d5 1889 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1890 char cmd[1024];
1891
b7b8fc34 1892 rt = s->priv_data;
115329f1 1893
c02fd3d2 1894 if (rt->state != RTSP_STATE_STREAMING)
ff762d6e 1895 return 0;
2e889ae4 1896 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1897 snprintf(cmd, sizeof(cmd),
1898 "PAUSE %s RTSP/1.0\r\n",
00eb13e0 1899 rt->control_uri);
3307e6ea 1900 ff_rtsp_send_cmd(s, cmd, reply, NULL);
99b2ac07
RB
1901 if (reply->status_code != RTSP_STATUS_OK) {
1902 return -1;
1903 }
1256d16b 1904 }
5f86057f
RB
1905 rt->state = RTSP_STATE_PAUSED;
1906 return 0;
b7b8fc34
FB
1907}
1908
115329f1 1909static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1910 int64_t timestamp, int flags)
ff762d6e
FB
1911{
1912 RTSPState *rt = s->priv_data;
115329f1 1913
c8965800
RB
1914 rt->seek_timestamp = av_rescale_q(timestamp,
1915 s->streams[stream_index]->time_base,
1916 AV_TIME_BASE_Q);
ff762d6e
FB
1917 switch(rt->state) {
1918 default:
1919 case RTSP_STATE_IDLE:
1920 break;
c02fd3d2 1921 case RTSP_STATE_STREAMING:
ec606b36
LB
1922 if (rtsp_read_pause(s) != 0)
1923 return -1;
1924 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1925 if (rtsp_read_play(s) != 0)
1926 return -1;
1927 break;
1928 case RTSP_STATE_PAUSED:
1929 rt->state = RTSP_STATE_IDLE;
1930 break;
1931 }
1932 return 0;
1933}
1934
1617ad97
FB
1935static int rtsp_read_close(AVFormatContext *s)
1936{
1937 RTSPState *rt = s->priv_data;
1617ad97
FB
1938 char cmd[1024];
1939
b6892136 1940#if 0
1617ad97 1941 /* NOTE: it is valid to flush the buffer here */
90abbdba 1942 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1943 url_fclose(&rt->rtsp_gb);
1944 }
b6892136 1945#endif
115329f1 1946 snprintf(cmd, sizeof(cmd),
b6892136 1947 "TEARDOWN %s RTSP/1.0\r\n",
db76ca7f 1948 rt->control_uri);
3307e6ea 1949 ff_rtsp_send_cmd_async(s, cmd);
1617ad97 1950
3307e6ea 1951 ff_rtsp_close_streams(s);
1617ad97 1952 url_close(rt->rtsp_hd);
57b5555c 1953 ff_network_close();
1617ad97
FB
1954 return 0;
1955}
1956
d2a067d1 1957AVInputFormat rtsp_demuxer = {
1617ad97 1958 "rtsp",
bde15e74 1959 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1960 sizeof(RTSPState),
1961 rtsp_probe,
1962 rtsp_read_header,
1963 rtsp_read_packet,
1964 rtsp_read_close,
ff762d6e 1965 rtsp_read_seek,
bb76a117 1966 .flags = AVFMT_NOFILE,
ff762d6e
FB
1967 .read_play = rtsp_read_play,
1968 .read_pause = rtsp_read_pause,
1617ad97 1969};
96862926 1970#endif
1617ad97 1971
cb1fdc61 1972static int sdp_probe(AVProbeData *p1)
93ced3e8 1973{
0e1ceacd 1974 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1975
1976 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1977 while (p < p_end && *p != '\0') {
c8965800
RB
1978 if (p + sizeof("c=IN IP4") - 1 < p_end &&
1979 av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1980 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1981
c8965800 1982 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1983 if (++p >= p_end)
cb1fdc61 1984 break;
cb1fdc61
FB
1985 if (*p == '\r')
1986 p++;
1987 }
93ced3e8
FB
1988 return 0;
1989}
1990
1991#define SDP_MAX_SIZE 8192
1992
c8965800 1993static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1994{
8b1ab7bf 1995 RTSPState *rt = s->priv_data;
93ced3e8
FB
1996 RTSPStream *rtsp_st;
1997 int size, i, err;
1998 char *content;
1999 char url[1024];
2000
57b5555c
MS
2001 if (!ff_network_init())
2002 return AVERROR(EIO);
2003
93ced3e8
FB
2004 /* read the whole sdp file */
2005 /* XXX: better loading */
2006 content = av_malloc(SDP_MAX_SIZE);
899681cd 2007 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2008 if (size <= 0) {
2009 av_free(content);
2010 return AVERROR_INVALIDDATA;
2011 }
2012 content[size] ='\0';
2013
2014 sdp_parse(s, content);
2015 av_free(content);
2016
2017 /* open each RTP stream */
c8965800 2018 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 2019 rtsp_st = rt->rtsp_streams[i];
115329f1 2020
57b5555c
MS
2021 ff_url_join(url, sizeof(url), "rtp", NULL,
2022 inet_ntoa(rtsp_st->sdp_ip), rtsp_st->sdp_port,
2023 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
2024 rtsp_st->sdp_ttl);
dbf30963 2025 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
2026 err = AVERROR_INVALIDDATA;
2027 goto fail;
2028 }
ee0cb67f 2029 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2030 goto fail;
93ced3e8
FB
2031 }
2032 return 0;
c8965800 2033fail:
3307e6ea 2034 ff_rtsp_close_streams(s);
57b5555c 2035 ff_network_close();
93ced3e8
FB
2036 return err;
2037}
2038
93ced3e8
FB
2039static int sdp_read_close(AVFormatContext *s)
2040{
3307e6ea 2041 ff_rtsp_close_streams(s);
57b5555c 2042 ff_network_close();
93ced3e8
FB
2043 return 0;
2044}
2045
ff70e601 2046AVInputFormat sdp_demuxer = {
93ced3e8 2047 "sdp",
bde15e74 2048 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
2049 sizeof(RTSPState),
2050 sdp_probe,
2051 sdp_read_header,
d7250724 2052 rtsp_fetch_packet,
93ced3e8
FB
2053 sdp_read_close,
2054};