fix compilation with DEBUG defined
[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
7246177d
AJ
22/* needed by inet_aton() */
23#define _SVID_SOURCE
24
245976da 25#include "libavutil/avstring.h"
6a5d31ac 26#include "libavutil/intreadwrite.h"
1617ad97
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27#include "avformat.h"
28
db0ed93e 29#include <sys/time.h>
b250f9c6 30#if HAVE_SYS_SELECT_H
933bd8e2 31#include <sys/select.h>
6ad1c9c9 32#endif
ea452b54 33#include <strings.h>
42572ef5 34#include "network.h"
c971ff19 35#include "rtsp.h"
1617ad97 36
302879cb 37#include "rtpdec.h"
e9dea59f 38#include "rdt.h"
1a30d541 39#include "rtp_asf.h"
e6327fba 40#include "rtp_vorbis.h"
4934884a 41
1617ad97 42//#define DEBUG
b6892136 43//#define DEBUG_RTP_TCP
1617ad97 44
ff762d6e
FB
45static int rtsp_read_play(AVFormatContext *s);
46
c482500f 47#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 48int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 49#endif
85fb7b34 50
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51static int rtsp_probe(AVProbeData *p)
52{
f7d78f36 53 if (av_strstart(p->filename, "rtsp:", NULL))
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54 return AVPROBE_SCORE_MAX;
55 return 0;
56}
57
1ef36a70 58#define SPACE_CHARS " \t\r\n"
da1e126e
RB
59/* we use memchr() instead of strchr() here because strchr() will return
60 * the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */
61#define redir_isspace(c) memchr(SPACE_CHARS, c, 4)
1617ad97
FB
62static void skip_spaces(const char **pp)
63{
64 const char *p;
65 p = *pp;
66 while (redir_isspace(*p))
67 p++;
68 *pp = p;
69}
70
1ef36a70
RB
71static void get_word_until_chars(char *buf, int buf_size,
72 const char *sep, const char **pp)
1617ad97
FB
73{
74 const char *p;
75 char *q;
76
77 p = *pp;
78 skip_spaces(&p);
79 q = buf;
80 while (!strchr(sep, *p) && *p != '\0') {
81 if ((q - buf) < buf_size - 1)
82 *q++ = *p;
83 p++;
84 }
85 if (buf_size > 0)
86 *q = '\0';
87 *pp = p;
88}
89
1ef36a70
RB
90static void get_word_sep(char *buf, int buf_size, const char *sep,
91 const char **pp)
1617ad97 92{
1ef36a70
RB
93 if (**pp == '/') (*pp)++;
94 get_word_until_chars(buf, buf_size, sep, pp);
95}
1617ad97 96
1ef36a70
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97static void get_word(char *buf, int buf_size, const char **pp)
98{
99 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
100}
101
93ced3e8
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102/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other
103 params>] */
4934884a 104static int sdp_parse_rtpmap(AVCodecContext *codec, RTSPStream *rtsp_st, int payload_type, const char *p)
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105{
106 char buf[256];
d1ccf0e0
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107 int i;
108 AVCodec *c;
7b49ce2e 109 const char *c_name;
93ced3e8 110
d1ccf0e0
RD
111 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
112 see if we can handle this kind of payload */
93ced3e8 113 get_word_sep(buf, sizeof(buf), "/", &p);
d1ccf0e0 114 if (payload_type >= RTP_PT_PRIVATE) {
4934884a
RM
115 RTPDynamicProtocolHandler *handler= RTPFirstDynamicPayloadHandler;
116 while(handler) {
743b3890 117 if (!strcasecmp(buf, handler->enc_name) && (codec->codec_type == handler->codec_type)) {
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RM
118 codec->codec_id = handler->codec_id;
119 rtsp_st->dynamic_handler= handler;
120 if(handler->open) {
121 rtsp_st->dynamic_protocol_context= handler->open();
122 }
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123 break;
124 }
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RM
125 handler= handler->next;
126 }
93ced3e8 127 } else {
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RD
128 /* We are in a standard case ( from http://www.iana.org/assignments/rtp-parameters) */
129 /* search into AVRtpPayloadTypes[] */
7ed19d7f 130 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
131 }
132
133 c = avcodec_find_decoder(codec->codec_id);
134 if (c && c->name)
7b49ce2e 135 c_name = c->name;
d1ccf0e0
RD
136 else
137 c_name = (char *)NULL;
138
139 if (c_name) {
140 get_word_sep(buf, sizeof(buf), "/", &p);
141 i = atoi(buf);
142 switch (codec->codec_type) {
143 case CODEC_TYPE_AUDIO:
144 av_log(codec, AV_LOG_DEBUG, " audio codec set to : %s\n", c_name);
145 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
146 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
147 if (i > 0) {
148 codec->sample_rate = i;
149 get_word_sep(buf, sizeof(buf), "/", &p);
150 i = atoi(buf);
151 if (i > 0)
152 codec->channels = i;
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153 // TODO: there is a bug here; if it is a mono stream, and less than 22000Hz, faad upconverts to stereo and twice the
154 // frequency. No problem, but the sample rate is being set here by the sdp line. Upcoming patch forthcoming. (rdm)
d1ccf0e0
RD
155 }
156 av_log(codec, AV_LOG_DEBUG, " audio samplerate set to : %i\n", codec->sample_rate);
157 av_log(codec, AV_LOG_DEBUG, " audio channels set to : %i\n", codec->channels);
158 break;
159 case CODEC_TYPE_VIDEO:
160 av_log(codec, AV_LOG_DEBUG, " video codec set to : %s\n", c_name);
161 break;
162 default:
163 break;
164 }
165 return 0;
93ced3e8 166 }
d1ccf0e0
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167
168 return -1;
93ced3e8
FB
169}
170
171/* return the length and optionnaly the data */
172static int hex_to_data(uint8_t *data, const char *p)
173{
174 int c, len, v;
175
176 len = 0;
177 v = 1;
178 for(;;) {
179 skip_spaces(&p);
6a8c8b36 180 if (*p == '\0')
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181 break;
182 c = toupper((unsigned char)*p++);
183 if (c >= '0' && c <= '9')
184 c = c - '0';
185 else if (c >= 'A' && c <= 'F')
186 c = c - 'A' + 10;
187 else
188 break;
189 v = (v << 4) | c;
190 if (v & 0x100) {
191 if (data)
192 data[len] = v;
193 len++;
194 v = 1;
195 }
196 }
197 return len;
198}
199
e6327fba
RB
200static void sdp_parse_fmtp_config(AVCodecContext * codec, void *ctx,
201 char *attr, char *value)
d1ccf0e0
RD
202{
203 switch (codec->codec_id) {
204 case CODEC_ID_MPEG4:
cbee7a69 205 case CODEC_ID_AAC:
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RD
206 if (!strcmp(attr, "config")) {
207 /* decode the hexa encoded parameter */
208 int len = hex_to_data(NULL, value);
7d09a993
RB
209 if (codec->extradata)
210 av_free(codec->extradata);
d1ccf0e0
RD
211 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
212 if (!codec->extradata)
213 return;
214 codec->extradata_size = len;
215 hex_to_data(codec->extradata, value);
216 }
217 break;
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RB
218 case CODEC_ID_VORBIS:
219 ff_vorbis_parse_fmtp_config(codec, ctx, attr, value);
220 break;
d1ccf0e0
RD
221 default:
222 break;
223 }
224 return;
225}
226
644e7acb 227typedef struct {
7b49ce2e 228 const char *str;
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RD
229 uint16_t type;
230 uint32_t offset;
644e7acb 231} AttrNameMap;
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RD
232
233/* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
234#define ATTR_NAME_TYPE_INT 0
235#define ATTR_NAME_TYPE_STR 1
644e7acb 236static const AttrNameMap attr_names[]=
d1ccf0e0 237{
be73a544
LA
238 {"SizeLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, sizelength)},
239 {"IndexLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexlength)},
240 {"IndexDeltaLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexdeltalength)},
241 {"profile-level-id", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, profile_level_id)},
242 {"StreamType", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, streamtype)},
243 {"mode", ATTR_NAME_TYPE_STR, offsetof(RTPPayloadData, mode)},
d1ccf0e0
RD
244 {NULL, -1, -1},
245};
246
d0deedcb
RM
247/** parse the attribute line from the fmtp a line of an sdp resonse. This is broken out as a function
248* because it is used in rtp_h264.c, which is forthcoming.
249*/
250int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size)
251{
252 skip_spaces(p);
78f731de 253 if(**p) {
d0deedcb
RM
254 get_word_sep(attr, attr_size, "=", p);
255 if (**p == '=')
256 (*p)++;
257 get_word_sep(value, value_size, ";", p);
258 if (**p == ';')
259 (*p)++;
260 return 1;
261 }
262 return 0;
263}
264
d1ccf0e0
RD
265/* parse a SDP line and save stream attributes */
266static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
267{
268 char attr[256];
373afbaf
RB
269 /* Vorbis setup headers can be up to 12KB and are sent base64
270 * encoded, giving a 12KB * (4/3) = 16KB FMTP line. */
271 char value[16384];
d1ccf0e0
RD
272 int i;
273
274 RTSPStream *rtsp_st = st->priv_data;
01f4895c 275 AVCodecContext *codec = st->codec;
be73a544 276 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
277
278 /* loop on each attribute */
1ad20f96
RM
279 while(rtsp_next_attr_and_value(&p, attr, sizeof(attr), value, sizeof(value)))
280 {
bb270c08 281 /* grab the codec extra_data from the config parameter of the fmtp line */
e6327fba
RB
282 sdp_parse_fmtp_config(codec, rtsp_st->dynamic_protocol_context,
283 attr, value);
d1ccf0e0
RD
284 /* Looking for a known attribute */
285 for (i = 0; attr_names[i].str; ++i) {
286 if (!strcasecmp(attr, attr_names[i].str)) {
287 if (attr_names[i].type == ATTR_NAME_TYPE_INT)
288 *(int *)((char *)rtp_payload_data + attr_names[i].offset) = atoi(value);
289 else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
290 *(char **)((char *)rtp_payload_data + attr_names[i].offset) = av_strdup(value);
bb270c08 291 }
93ced3e8 292 }
93ced3e8
FB
293 }
294}
295
31693e00
RM
296/** Parse a string \p in the form of Range:npt=xx-xx, and determine the start
297 * and end time.
298 * Used for seeking in the rtp stream.
299 */
300static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
301{
302 char buf[256];
303
304 skip_spaces(&p);
f7d78f36 305 if (!av_stristart(p, "npt=", &p))
31693e00
RM
306 return;
307
308 *start = AV_NOPTS_VALUE;
309 *end = AV_NOPTS_VALUE;
310
311 get_word_sep(buf, sizeof(buf), "-", &p);
312 *start = parse_date(buf, 1);
313 if (*p == '-') {
314 p++;
315 get_word_sep(buf, sizeof(buf), "-", &p);
316 *end = parse_date(buf, 1);
317 }
318// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
319// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
320}
321
93ced3e8
FB
322typedef struct SDPParseState {
323 /* SDP only */
324 struct in_addr default_ip;
325 int default_ttl;
cb760a47 326 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
327} SDPParseState;
328
329static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
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330 int letter, const char *buf)
331{
8b1ab7bf 332 RTSPState *rt = s->priv_data;
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333 char buf1[64], st_type[64];
334 const char *p;
fb65d2ca
DP
335 enum CodecType codec_type;
336 int payload_type, i;
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337 AVStream *st;
338 RTSPStream *rtsp_st;
93ced3e8
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339 struct in_addr sdp_ip;
340 int ttl;
341
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342#ifdef DEBUG
343 printf("sdp: %c='%s'\n", letter, buf);
344#endif
345
346 p = buf;
cb760a47
RB
347 if (s1->skip_media && letter != 'm')
348 return;
1617ad97 349 switch(letter) {
93ced3e8
FB
350 case 'c':
351 get_word(buf1, sizeof(buf1), &p);
352 if (strcmp(buf1, "IN") != 0)
353 return;
354 get_word(buf1, sizeof(buf1), &p);
355 if (strcmp(buf1, "IP4") != 0)
356 return;
357 get_word_sep(buf1, sizeof(buf1), "/", &p);
358 if (inet_aton(buf1, &sdp_ip) == 0)
359 return;
360 ttl = 16;
361 if (*p == '/') {
362 p++;
363 get_word_sep(buf1, sizeof(buf1), "/", &p);
364 ttl = atoi(buf1);
365 }
366 if (s->nb_streams == 0) {
367 s1->default_ip = sdp_ip;
368 s1->default_ttl = ttl;
369 } else {
370 st = s->streams[s->nb_streams - 1];
371 rtsp_st = st->priv_data;
372 rtsp_st->sdp_ip = sdp_ip;
373 rtsp_st->sdp_ttl = ttl;
374 }
375 break;
1617ad97 376 case 's':
da61e413 377 av_metadata_set(&s->metadata, "title", p);
1617ad97
FB
378 break;
379 case 'i':
380 if (s->nb_streams == 0) {
da61e413 381 av_metadata_set(&s->metadata, "comment", p);
1617ad97
FB
382 break;
383 }
384 break;
385 case 'm':
386 /* new stream */
cb760a47 387 s1->skip_media = 0;
1617ad97
FB
388 get_word(st_type, sizeof(st_type), &p);
389 if (!strcmp(st_type, "audio")) {
390 codec_type = CODEC_TYPE_AUDIO;
391 } else if (!strcmp(st_type, "video")) {
392 codec_type = CODEC_TYPE_VIDEO;
090438cc
RB
393 } else if (!strcmp(st_type, "application")) {
394 codec_type = CODEC_TYPE_DATA;
1617ad97 395 } else {
cb760a47 396 s1->skip_media = 1;
1617ad97
FB
397 return;
398 }
1617ad97
FB
399 rtsp_st = av_mallocz(sizeof(RTSPStream));
400 if (!rtsp_st)
401 return;
8b1ab7bf
FB
402 rtsp_st->stream_index = -1;
403 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
404
405 rtsp_st->sdp_ip = s1->default_ip;
406 rtsp_st->sdp_ttl = s1->default_ttl;
407
93ced3e8
FB
408 get_word(buf1, sizeof(buf1), &p); /* port */
409 rtsp_st->sdp_port = atoi(buf1);
410
411 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 412
93ced3e8
FB
413 /* XXX: handle list of formats */
414 get_word(buf1, sizeof(buf1), &p); /* format list */
415 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 416
7ed19d7f 417 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
418 /* no corresponding stream */
419 } else {
420 st = av_new_stream(s, 0);
421 if (!st)
422 return;
423 st->priv_data = rtsp_st;
424 rtsp_st->stream_index = st->index;
01f4895c 425 st->codec->codec_type = codec_type;
d1ccf0e0 426 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 427 /* if standard payload type, we can find the codec right now */
bf6d9818 428 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
429 }
430 }
1617ad97 431 /* put a default control url */
75e61b0e 432 av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url));
1617ad97
FB
433 break;
434 case 'a':
f7d78f36 435 if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
1617ad97
FB
436 char proto[32];
437 /* get the control url */
438 st = s->streams[s->nb_streams - 1];
439 rtsp_st = st->priv_data;
115329f1 440
1617ad97 441 /* XXX: may need to add full url resolution */
6ba5cbc6 442 url_split(proto, sizeof(proto), NULL, 0, NULL, 0, NULL, NULL, 0, p);
1617ad97
FB
443 if (proto[0] == '\0') {
444 /* relative control URL */
75e61b0e
MR
445 av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url));
446 av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 447 } else {
75e61b0e 448 av_strlcpy(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 449 }
83d14c85 450 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 451 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 452 get_word(buf1, sizeof(buf1), &p);
93ced3e8 453 payload_type = atoi(buf1);
83d14c85 454 st = s->streams[s->nb_streams - 1];
ff16f551
RB
455 rtsp_st = st->priv_data;
456 sdp_parse_rtpmap(st->codec, rtsp_st, payload_type, p);
f7d78f36 457 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 458 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 459 get_word(buf1, sizeof(buf1), &p);
93ced3e8
FB
460 payload_type = atoi(buf1);
461 for(i = 0; i < s->nb_streams;i++) {
462 st = s->streams[i];
463 rtsp_st = st->priv_data;
464 if (rtsp_st->sdp_payload_type == payload_type) {
4934884a 465 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 466 if(!rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf)) {
4934884a
RM
467 sdp_parse_fmtp(st, p);
468 }
469 } else {
ed787542 470 sdp_parse_fmtp(st, p);
4934884a 471 }
93ced3e8
FB
472 }
473 }
f7d78f36 474 } else if(av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
475 // let dynamic protocol handlers have a stab at the line.
476 get_word(buf1, sizeof(buf1), &p);
477 payload_type = atoi(buf1);
478 for(i = 0; i < s->nb_streams;i++) {
479 st = s->streams[i];
480 rtsp_st = st->priv_data;
481 if (rtsp_st->sdp_payload_type == payload_type) {
482 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 483 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf);
d0deedcb
RM
484 }
485 }
486 }
f7d78f36 487 } else if(av_strstart(p, "range:", &p)) {
31693e00
RM
488 int64_t start, end;
489
490 // this is so that seeking on a streamed file can work.
491 rtsp_parse_range_npt(p, &start, &end);
492 s->start_time= start;
493 s->duration= (end==AV_NOPTS_VALUE)?AV_NOPTS_VALUE:end-start; // AV_NOPTS_VALUE means live broadcast (and can't seek)
119b4668
RB
494 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
495 if (atoi(p) == 1)
496 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
497 } else {
498 if (rt->server_type == RTSP_SERVER_WMS)
499 ff_wms_parse_sdp_a_line(s, p);
500 if (s->nb_streams > 0) {
c4a3d032
RB
501 if (rt->server_type == RTSP_SERVER_REAL)
502 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
503
504 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
505 if (rtsp_st->dynamic_handler &&
506 rtsp_st->dynamic_handler->parse_sdp_a_line)
507 rtsp_st->dynamic_handler->parse_sdp_a_line(s, s->nb_streams - 1,
508 rtsp_st->dynamic_protocol_context, buf);
1a30d541 509 }
1617ad97
FB
510 }
511 break;
512 }
513}
514
5c91a675 515static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
516{
517 const char *p;
518 int letter;
9211bcdd
RB
519 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
520 * contain long SDP lines containing complete ASF Headers (several
521 * kB) or arrays of MDPR (RM stream descriptor) headers plus
522 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
523 * buffer is large.
524 *
525 * The Vorbis FMTP line can be up to 16KB - see sdp_parse_fmtp. */
526 char buf[16384], *q;
93ced3e8 527 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 528
93ced3e8 529 memset(s1, 0, sizeof(SDPParseState));
1617ad97
FB
530 p = content;
531 for(;;) {
532 skip_spaces(&p);
533 letter = *p;
534 if (letter == '\0')
535 break;
536 p++;
537 if (*p != '=')
538 goto next_line;
539 p++;
540 /* get the content */
541 q = buf;
b6892136 542 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
543 if ((q - buf) < sizeof(buf) - 1)
544 *q++ = *p;
545 p++;
546 }
547 *q = '\0';
93ced3e8 548 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
549 next_line:
550 while (*p != '\n' && *p != '\0')
551 p++;
552 if (*p == '\n')
553 p++;
554 }
555 return 0;
556}
557
558static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
559{
560 const char *p;
561 int v;
562
563 p = *pp;
564 skip_spaces(&p);
565 v = strtol(p, (char **)&p, 10);
566 if (*p == '-') {
567 p++;
568 *min_ptr = v;
569 v = strtol(p, (char **)&p, 10);
570 *max_ptr = v;
571 } else {
572 *min_ptr = v;
573 *max_ptr = v;
574 }
575 *pp = p;
576}
577
578/* XXX: only one transport specification is parsed */
a9e534d5 579static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
580{
581 char transport_protocol[16];
582 char profile[16];
583 char lower_transport[16];
584 char parameter[16];
585 RTSPTransportField *th;
586 char buf[256];
115329f1 587
1617ad97 588 reply->nb_transports = 0;
115329f1 589
1617ad97
FB
590 for(;;) {
591 skip_spaces(&p);
592 if (*p == '\0')
593 break;
594
595 th = &reply->transports[reply->nb_transports];
596
115329f1 597 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 598 "/", &p);
e1502118 599 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
600 get_word_sep(profile, sizeof(profile), "/;,", &p);
601 lower_transport[0] = '\0';
602 /* rtp/avp/<protocol> */
603 if (*p == '/') {
7ecc634e
LB
604 get_word_sep(lower_transport, sizeof(lower_transport),
605 ";,", &p);
119b4668
RB
606 }
607 th->transport = RTSP_TRANSPORT_RTP;
608 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
609 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 610 /* x-pn-tng/<protocol> */
e1502118
LB
611 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
612 profile[0] = '\0';
119b4668 613 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 614 }
b6892136 615 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 616 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 617 else
90abbdba 618 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 619
1617ad97
FB
620 if (*p == ';')
621 p++;
622 /* get each parameter */
623 while (*p != '\0' && *p != ',') {
624 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
625 if (!strcmp(parameter, "port")) {
626 if (*p == '=') {
627 p++;
628 rtsp_parse_range(&th->port_min, &th->port_max, &p);
629 }
630 } else if (!strcmp(parameter, "client_port")) {
631 if (*p == '=') {
632 p++;
115329f1 633 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
634 &th->client_port_max, &p);
635 }
636 } else if (!strcmp(parameter, "server_port")) {
637 if (*p == '=') {
638 p++;
115329f1 639 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
640 &th->server_port_max, &p);
641 }
642 } else if (!strcmp(parameter, "interleaved")) {
643 if (*p == '=') {
644 p++;
115329f1 645 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
646 &th->interleaved_max, &p);
647 }
648 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
649 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
650 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
651 } else if (!strcmp(parameter, "ttl")) {
652 if (*p == '=') {
653 p++;
654 th->ttl = strtol(p, (char **)&p, 10);
655 }
656 } else if (!strcmp(parameter, "destination")) {
657 struct in_addr ipaddr;
658
659 if (*p == '=') {
660 p++;
661 get_word_sep(buf, sizeof(buf), ";,", &p);
115329f1 662 if (inet_aton(buf, &ipaddr))
1617ad97
FB
663 th->destination = ntohl(ipaddr.s_addr);
664 }
665 }
666 while (*p != ';' && *p != '\0' && *p != ',')
667 p++;
668 if (*p == ';')
669 p++;
670 }
671 if (*p == ',')
672 p++;
673
674 reply->nb_transports++;
675 }
676}
677
a9e534d5 678void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
679{
680 const char *p;
681
682 /* NOTE: we do case independent match for broken servers */
683 p = buf;
f7d78f36 684 if (av_stristart(p, "Session:", &p)) {
30e79845 685 int t;
1617ad97 686 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
687 if (av_stristart(p, ";timeout=", &p) &&
688 (t = strtol(p, NULL, 10)) > 0) {
689 reply->timeout = t;
690 }
f7d78f36 691 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 692 reply->content_length = strtol(p, NULL, 10);
f7d78f36 693 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 694 rtsp_parse_transport(reply, p);
f7d78f36 695 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 696 reply->seq = strtol(p, NULL, 10);
f7d78f36 697 } else if (av_stristart(p, "Range:", &p)) {
31693e00 698 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
699 } else if (av_stristart(p, "RealChallenge1:", &p)) {
700 skip_spaces(&p);
701 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
702 } else if (av_stristart(p, "Server:", &p)) {
703 skip_spaces(&p);
704 av_strlcpy(reply->server, p, sizeof(reply->server));
1617ad97
FB
705 }
706}
707
2a42b5c3
LS
708static int url_readbuf(URLContext *h, unsigned char *buf, int size)
709{
710 int ret, len;
711
712 len = 0;
713 while (len < size) {
714 ret = url_read(h, buf+len, size-len);
715 if (ret < 1)
716 return ret;
717 len += ret;
718 }
719 return len;
720}
721
b7b8fc34
FB
722/* skip a RTP/TCP interleaved packet */
723static void rtsp_skip_packet(AVFormatContext *s)
724{
725 RTSPState *rt = s->priv_data;
726 int ret, len, len1;
727 uint8_t buf[1024];
728
2a42b5c3 729 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
730 if (ret != 3)
731 return;
80fb8234 732 len = AV_RB16(buf + 1);
b7b8fc34
FB
733#ifdef DEBUG
734 printf("skipping RTP packet len=%d\n", len);
735#endif
736 /* skip payload */
737 while (len > 0) {
738 len1 = len;
739 if (len1 > sizeof(buf))
740 len1 = sizeof(buf);
2a42b5c3 741 ret = url_readbuf(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
742 if (ret != len1)
743 return;
744 len -= len1;
745 }
746}
1617ad97 747
7e726132
RB
748/**
749 * Read a RTSP message from the server, or prepare to read data
750 * packets if we're reading data interleaved over the TCP/RTSP
751 * connection as well.
752 *
753 * @param s RTSP demuxer context
754 * @param reply pointer where the RTSP message header will be stored
755 * @param content_ptr pointer where the RTSP message body, if any, will
756 * be stored (length is in \p reply)
757 * @param return_on_interleaved_data whether the function may return if we
758 * encounter a data marker ('$'), which precedes data
759 * packets over interleaved TCP/RTSP connections. If this
760 * is set, this function will return 1 after encountering
761 * a '$'. If it is not set, the function will skip any
762 * data packets (if they are encountered), until a reply
763 * has been fully parsed. If no more data is available
764 * without parsing a reply, it will return an error.
765 *
766 * @returns 1 if a data packets is ready to be received, -1 on error,
767 * and 0 on success.
768 */
769static int
29b9f58b 770rtsp_read_reply (AVFormatContext *s, RTSPMessageHeader *reply,
7e726132 771 unsigned char **content_ptr, int return_on_interleaved_data)
1617ad97
FB
772{
773 RTSPState *rt = s->priv_data;
774 char buf[4096], buf1[1024], *q;
775 unsigned char ch;
776 const char *p;
7e726132 777 int ret, content_length, line_count = 0;
1617ad97
FB
778 unsigned char *content = NULL;
779
d541a7d2 780 memset(reply, 0, sizeof(*reply));
1617ad97 781
1617ad97 782 /* parse reply (XXX: use buffers) */
1617ad97
FB
783 rt->last_reply[0] = '\0';
784 for(;;) {
785 q = buf;
786 for(;;) {
7e726132
RB
787 ret = url_readbuf(rt->rtsp_hd, &ch, 1);
788#ifdef DEBUG_RTP_TCP
789 printf("ret=%d c=%02x [%c]\n", ret, ch, ch);
790#endif
791 if (ret != 1)
792 return -1;
1617ad97
FB
793 if (ch == '\n')
794 break;
b7b8fc34
FB
795 if (ch == '$') {
796 /* XXX: only parse it if first char on line ? */
7e726132
RB
797 if (return_on_interleaved_data) {
798 return 1;
799 } else
b7b8fc34
FB
800 rtsp_skip_packet(s);
801 } else if (ch != '\r') {
1617ad97
FB
802 if ((q - buf) < sizeof(buf) - 1)
803 *q++ = ch;
804 }
805 }
806 *q = '\0';
807#ifdef DEBUG
808 printf("line='%s'\n", buf);
809#endif
810 /* test if last line */
811 if (buf[0] == '\0')
812 break;
813 p = buf;
814 if (line_count == 0) {
815 /* get reply code */
816 get_word(buf1, sizeof(buf1), &p);
817 get_word(buf1, sizeof(buf1), &p);
818 reply->status_code = atoi(buf1);
819 } else {
820 rtsp_parse_line(reply, p);
75e61b0e
MR
821 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
822 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
823 }
824 line_count++;
825 }
115329f1 826
1617ad97 827 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 828 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 829
1617ad97
FB
830 content_length = reply->content_length;
831 if (content_length > 0) {
832 /* leave some room for a trailing '\0' (useful for simple parsing) */
833 content = av_malloc(content_length + 1);
2a42b5c3 834 (void)url_readbuf(rt->rtsp_hd, content, content_length);
1617ad97
FB
835 content[content_length] = '\0';
836 }
837 if (content_ptr)
838 *content_ptr = content;
e2e2e7dd
AB
839 else
840 av_free(content);
7e726132
RB
841
842 return 0;
1617ad97
FB
843}
844
30e79845 845static void rtsp_send_cmd_async (AVFormatContext *s,
29b9f58b
RB
846 const char *cmd, RTSPMessageHeader *reply,
847 unsigned char **content_ptr)
848{
849 RTSPState *rt = s->priv_data;
850 char buf[4096], buf1[1024];
851
852 rt->seq++;
853 av_strlcpy(buf, cmd, sizeof(buf));
854 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
855 av_strlcat(buf, buf1, sizeof(buf));
856 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
857 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
858 av_strlcat(buf, buf1, sizeof(buf));
859 }
860 av_strlcat(buf, "\r\n", sizeof(buf));
861#ifdef DEBUG
862 printf("Sending:\n%s--\n", buf);
863#endif
864 url_write(rt->rtsp_hd, buf, strlen(buf));
30e79845
RB
865 rt->last_cmd_time = av_gettime();
866}
867
868static void rtsp_send_cmd (AVFormatContext *s,
869 const char *cmd, RTSPMessageHeader *reply,
870 unsigned char **content_ptr)
871{
872 rtsp_send_cmd_async(s, cmd, reply, content_ptr);
29b9f58b 873
7e726132 874 rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
875}
876
1617ad97 877
8b1ab7bf
FB
878/* close and free RTSP streams */
879static void rtsp_close_streams(RTSPState *rt)
880{
881 int i;
882 RTSPStream *rtsp_st;
883
884 for(i=0;i<rt->nb_rtsp_streams;i++) {
885 rtsp_st = rt->rtsp_streams[i];
886 if (rtsp_st) {
0a861b6f 887 if (rtsp_st->transport_priv) {
accc248f 888 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 889 ff_rdt_parse_close(rtsp_st->transport_priv);
accc248f 890 else
0a861b6f 891 rtp_parse_close(rtsp_st->transport_priv);
accc248f 892 }
8b1ab7bf
FB
893 if (rtsp_st->rtp_handle)
894 url_close(rtsp_st->rtp_handle);
4934884a
RM
895 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
896 rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
8b1ab7bf 897 }
8b1ab7bf
FB
898 }
899 av_free(rt->rtsp_streams);
1a30d541
RB
900 if (rt->asf_ctx) {
901 av_close_input_stream (rt->asf_ctx);
902 rt->asf_ctx = NULL;
903 }
8b1ab7bf
FB
904}
905
ee0cb67f
RB
906static int
907rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
908{
accc248f 909 RTSPState *rt = s->priv_data;
ee0cb67f
RB
910 AVStream *st = NULL;
911
a6789dca
RB
912 /* open the RTP context */
913 if (rtsp_st->stream_index >= 0)
914 st = s->streams[rtsp_st->stream_index];
915 if (!st)
916 s->ctx_flags |= AVFMTCTX_NOHEADER;
accc248f
RB
917
918 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 919 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
accc248f
RB
920 rtsp_st->dynamic_protocol_context,
921 rtsp_st->dynamic_handler);
922 else
0a861b6f 923 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
5c918b27
RB
924 rtsp_st->sdp_payload_type,
925 &rtsp_st->rtp_payload_data);
a6789dca 926
0a861b6f 927 if (!rtsp_st->transport_priv) {
a6789dca 928 return AVERROR(ENOMEM);
accc248f 929 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
a6789dca 930 if(rtsp_st->dynamic_handler) {
0a861b6f 931 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
99a1d191
RB
932 rtsp_st->dynamic_protocol_context,
933 rtsp_st->dynamic_handler);
ee0cb67f 934 }
a6789dca 935 }
ee0cb67f
RB
936
937 return 0;
938}
939
53620bba
RB
940/**
941 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
942 */
943static int
e9dea59f 944make_setup_request (AVFormatContext *s, const char *host, int port,
90abbdba 945 int lower_transport, const char *real_challenge)
1617ad97
FB
946{
947 RTSPState *rt = s->priv_data;
f830c9a4 948 int rtx, j, i, err, interleave = 0;
1617ad97 949 RTSPStream *rtsp_st;
a9e534d5 950 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 951 char cmd[2048];
e9dea59f
RB
952 const char *trans_pref;
953
119b4668 954 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
955 trans_pref = "x-pn-tng";
956 else
957 trans_pref = "RTP/AVP";
115329f1 958
30e79845
RB
959 /* default timeout: 1 minute */
960 rt->timeout = 60;
961
1617ad97
FB
962 /* for each stream, make the setup request */
963 /* XXX: we assume the same server is used for the control of each
964 RTSP stream */
d1ccf0e0
RD
965
966 for(j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
967 char transport[2048];
968
f830c9a4
RB
969 /**
970 * WMS serves all UDP data over a single connection, the RTX, which
971 * isn't necessarily the first in the SDP but has to be the first
972 * to be set up, else the second/third SETUP will fail with a 461.
973 */
974 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
975 rt->server_type == RTSP_SERVER_WMS) {
976 if (i == 0) {
977 /* rtx first */
978 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
979 int len = strlen(rt->rtsp_streams[rtx]->control_url);
980 if (len >= 4 &&
981 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, "/rtx"))
982 break;
983 }
984 if (rtx == rt->nb_rtsp_streams)
985 return -1; /* no RTX found */
986 rtsp_st = rt->rtsp_streams[rtx];
987 } else
988 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
989 } else
2fea9650 990 rtsp_st = rt->rtsp_streams[i];
1617ad97 991
1617ad97 992 /* RTP/UDP */
90abbdba 993 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 994 char buf[256];
85fb7b34 995
f830c9a4
RB
996 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
997 port = reply->transports[0].client_port_min;
998 goto have_port;
999 }
1000
85fb7b34 1001 /* first try in specified port range */
d1ccf0e0
RD
1002 if (RTSP_RTP_PORT_MIN != 0) {
1003 while(j <= RTSP_RTP_PORT_MAX) {
b316aa1a 1004 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d", host, j);
ecdcbbf6 1005 j += 2; /* we will use two port by rtp stream (rtp and rtcp) */
dbf30963 1006 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) {
85fb7b34 1007 goto rtp_opened;
d1ccf0e0 1008 }
85fb7b34 1009 }
1617ad97 1010 }
85fb7b34 1011
d1ccf0e0
RD
1012/* then try on any port
1013** if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1014** err = AVERROR_INVALIDDATA;
1015** goto fail;
1016** }
1017*/
85fb7b34
FB
1018
1019 rtp_opened:
8b1ab7bf 1020 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1021 have_port:
0ad306bc 1022 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1023 "%s/UDP;", trans_pref);
1024 if (rt->server_type != RTSP_SERVER_REAL)
1025 av_strlcat(transport, "unicast;", sizeof(transport));
1026 av_strlcatf(transport, sizeof(transport),
1027 "client_port=%d", port);
f830c9a4
RB
1028 if (rt->transport == RTSP_TRANSPORT_RTP &&
1029 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1030 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1031 }
1032
1033 /* RTP/TCP */
90abbdba 1034 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1035 /** For WMS streams, the application streams are only used for
1036 * UDP. When trying to set it up for TCP streams, the server
1037 * will return an error. Therefore, we skip those streams. */
1038 if (rt->server_type == RTSP_SERVER_WMS &&
1039 s->streams[rtsp_st->stream_index]->codec->codec_type == CODEC_TYPE_DATA)
1040 continue;
0ad306bc 1041 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1042 "%s/TCP;", trans_pref);
1043 if (rt->server_type == RTSP_SERVER_WMS)
1044 av_strlcat(transport, "unicast;", sizeof(transport));
1045 av_strlcatf(transport, sizeof(transport),
1046 "interleaved=%d-%d",
1047 interleave, interleave + 1);
1048 interleave += 2;
1617ad97
FB
1049 }
1050
90abbdba 1051 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1052 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1053 "%s/UDP;multicast", trans_pref);
1617ad97 1054 }
d1c6e47c
RB
1055 if (rt->server_type == RTSP_SERVER_REAL ||
1056 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1057 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1058 snprintf(cmd, sizeof(cmd),
b6892136
FB
1059 "SETUP %s RTSP/1.0\r\n"
1060 "Transport: %s\r\n",
1617ad97 1061 rtsp_st->control_url, transport);
2e889ae4 1062 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1063 char real_res[41], real_csum[9];
1064 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1065 real_challenge);
1066 av_strlcatf(cmd, sizeof(cmd),
1067 "If-Match: %s\r\n"
1068 "RealChallenge2: %s, sd=%s\r\n",
1069 rt->session_id, real_res, real_csum);
1070 }
1617ad97 1071 rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1072 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1073 err = 1;
1074 goto fail;
7e6ca34f
RB
1075 } else if (reply->status_code != RTSP_STATUS_OK ||
1076 reply->nb_transports != 1) {
1617ad97
FB
1077 err = AVERROR_INVALIDDATA;
1078 goto fail;
1079 }
1080
1081 /* XXX: same protocol for all streams is required */
1082 if (i > 0) {
119b4668
RB
1083 if (reply->transports[0].lower_transport != rt->lower_transport ||
1084 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1085 err = AVERROR_INVALIDDATA;
1086 goto fail;
1087 }
1088 } else {
90abbdba 1089 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1090 rt->transport = reply->transports[0].transport;
1617ad97
FB
1091 }
1092
1093 /* close RTP connection if not choosen */
90abbdba
RB
1094 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1095 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1096 url_close(rtsp_st->rtp_handle);
1097 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1098 }
1099
90abbdba
RB
1100 switch(reply->transports[0].lower_transport) {
1101 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1102 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1103 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1104 break;
115329f1 1105
90abbdba 1106 case RTSP_LOWER_TRANSPORT_UDP:
1617ad97
FB
1107 {
1108 char url[1024];
115329f1 1109
1617ad97 1110 /* XXX: also use address if specified */
115329f1 1111 snprintf(url, sizeof(url), "rtp://%s:%d",
1617ad97 1112 host, reply->transports[0].server_port_min);
f830c9a4
RB
1113 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1114 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1617ad97
FB
1115 err = AVERROR_INVALIDDATA;
1116 goto fail;
1117 }
1118 }
1119 break;
90abbdba 1120 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1617ad97
FB
1121 {
1122 char url[1024];
d02678ec 1123 struct in_addr in;
1617ad97 1124
d02678ec 1125 in.s_addr = htonl(reply->transports[0].destination);
35b74c3d 1126 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
d02678ec
LB
1127 inet_ntoa(in),
1128 reply->transports[0].port_min,
1129 reply->transports[0].ttl);
dbf30963 1130 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1617ad97
FB
1131 err = AVERROR_INVALIDDATA;
1132 goto fail;
1133 }
1134 }
1135 break;
1136 }
d1ccf0e0 1137
ee0cb67f 1138 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1139 goto fail;
1617ad97
FB
1140 }
1141
30e79845
RB
1142 if (reply->timeout > 0)
1143 rt->timeout = reply->timeout;
1144
2e889ae4 1145 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1146 rt->need_subscription = 1;
1147
53620bba
RB
1148 return 0;
1149
1150fail:
8a8754d8
RB
1151 for (i=0; i<rt->nb_rtsp_streams; i++) {
1152 if (rt->rtsp_streams[i]->rtp_handle) {
1153 url_close(rt->rtsp_streams[i]->rtp_handle);
1154 rt->rtsp_streams[i]->rtp_handle = NULL;
1155 }
1156 }
53620bba
RB
1157 return err;
1158}
1159
1160static int rtsp_read_header(AVFormatContext *s,
1161 AVFormatParameters *ap)
1162{
1163 RTSPState *rt = s->priv_data;
1164 char host[1024], path[1024], tcpname[1024], cmd[2048], *option_list, *option;
1165 URLContext *rtsp_hd;
1166 int port, ret, err;
a9e534d5 1167 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1168 unsigned char *content = NULL;
90abbdba 1169 int lower_transport_mask = 0;
1cf151e9 1170 char real_challenge[64];
53620bba
RB
1171
1172 /* extract hostname and port */
1173 url_split(NULL, 0, NULL, 0,
1174 host, sizeof(host), &port, path, sizeof(path), s->filename);
1175 if (port < 0)
1176 port = RTSP_DEFAULT_PORT;
1177
1178 /* search for options */
1179 option_list = strchr(path, '?');
1180 if (option_list) {
1181 /* remove the options from the path */
1182 *option_list++ = 0;
1183 while(option_list) {
1184 /* move the option pointer */
1185 option = option_list;
1186 option_list = strchr(option_list, '&');
1187 if (option_list)
1188 *(option_list++) = 0;
1189 /* handle the options */
1190 if (strcmp(option, "udp") == 0)
90abbdba 1191 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
53620bba 1192 else if (strcmp(option, "multicast") == 0)
90abbdba 1193 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
53620bba 1194 else if (strcmp(option, "tcp") == 0)
90abbdba 1195 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
53620bba
RB
1196 }
1197 }
1198
90abbdba 1199 if (!lower_transport_mask)
2a1d51c5 1200 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba
RB
1201
1202 /* open the tcp connexion */
1203 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
1204 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0)
1205 return AVERROR(EIO);
1206 rt->rtsp_hd = rtsp_hd;
1207 rt->seq = 0;
1208
1cf151e9
RB
1209 /* request options supported by the server; this also detects server type */
1210 for (rt->server_type = RTSP_SERVER_RTP;;) {
1211 snprintf(cmd, sizeof(cmd),
1212 "OPTIONS %s RTSP/1.0\r\n", s->filename);
2e889ae4 1213 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1214 av_strlcat(cmd,
1215 /**
1216 * The following entries are required for proper
1217 * streaming from a Realmedia server. They are
1218 * interdependent in some way although we currently
1219 * don't quite understand how. Values were copied
1220 * from mplayer SVN r23589.
1221 * @param CompanyID is a 16-byte ID in base64
1222 * @param ClientChallenge is a 16-byte ID in hex
1223 */
1224 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1225 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1226 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1227 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1228 sizeof(cmd));
1229 rtsp_send_cmd(s, cmd, reply, NULL);
1230 if (reply->status_code != RTSP_STATUS_OK) {
1231 err = AVERROR_INVALIDDATA;
1232 goto fail;
1233 }
1234
1235 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1236 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1237 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1238 continue;
7a86bafa
RB
1239 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1240 rt->server_type = RTSP_SERVER_WMS;
2e889ae4 1241 } else if (rt->server_type == RTSP_SERVER_REAL) {
1cf151e9
RB
1242 strcpy(real_challenge, reply->real_challenge);
1243 }
1244 break;
1245 }
1246
53620bba
RB
1247 /* describe the stream */
1248 snprintf(cmd, sizeof(cmd),
1249 "DESCRIBE %s RTSP/1.0\r\n"
1250 "Accept: application/sdp\r\n",
1251 s->filename);
2e889ae4 1252 if (rt->server_type == RTSP_SERVER_REAL) {
897ade1b
RB
1253 /**
1254 * The Require: attribute is needed for proper streaming from
1255 * Realmedia servers.
1256 */
1257 av_strlcat(cmd,
1258 "Require: com.real.retain-entity-for-setup\r\n",
1259 sizeof(cmd));
1260 }
53620bba
RB
1261 rtsp_send_cmd(s, cmd, reply, &content);
1262 if (!content) {
1263 err = AVERROR_INVALIDDATA;
1264 goto fail;
1265 }
1266 if (reply->status_code != RTSP_STATUS_OK) {
1267 err = AVERROR_INVALIDDATA;
1268 goto fail;
1269 }
1270
1271 /* now we got the SDP description, we parse it */
1272 ret = sdp_parse(s, (const char *)content);
1273 av_freep(&content);
1274 if (ret < 0) {
1275 err = AVERROR_INVALIDDATA;
1276 goto fail;
1277 }
1278
8a8754d8 1279 do {
90abbdba 1280 int lower_transport = ff_log2_tab[lower_transport_mask & ~(lower_transport_mask - 1)];
8a8754d8 1281
90abbdba 1282 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1283 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1284 real_challenge : NULL);
8a8754d8 1285 if (err < 0)
7e6ca34f 1286 goto fail;
90abbdba
RB
1287 lower_transport_mask &= ~(1 << lower_transport);
1288 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1289 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1290 goto fail;
1291 }
1292 } while (err);
53620bba 1293
ff762d6e
FB
1294 rt->state = RTSP_STATE_IDLE;
1295 rt->seek_timestamp = 0; /* default is to start stream at position
1296 zero */
c04c3282 1297 if (ap->initial_pause) {
ff762d6e
FB
1298 /* do not start immediately */
1299 } else {
1300 if (rtsp_read_play(s) < 0) {
1301 err = AVERROR_INVALIDDATA;
1617ad97
FB
1302 goto fail;
1303 }
1304 }
1617ad97
FB
1305 return 0;
1306 fail:
8b1ab7bf 1307 rtsp_close_streams(rt);
1617ad97
FB
1308 av_freep(&content);
1309 url_close(rt->rtsp_hd);
1310 return err;
1311}
1312
8b1ab7bf
FB
1313static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1314 uint8_t *buf, int buf_size)
1617ad97
FB
1315{
1316 RTSPState *rt = s->priv_data;
b6892136 1317 int id, len, i, ret;
1617ad97 1318 RTSPStream *rtsp_st;
1617ad97 1319
b6892136
FB
1320#ifdef DEBUG_RTP_TCP
1321 printf("tcp_read_packet:\n");
1322#endif
1617ad97
FB
1323 redo:
1324 for(;;) {
7e726132
RB
1325 RTSPMessageHeader reply;
1326
1327 ret = rtsp_read_reply(s, &reply, NULL, 1);
1328 if (ret == -1)
8b1ab7bf 1329 return -1;
7e726132 1330 if (ret == 1) /* received '$' */
1617ad97 1331 break;
7e726132 1332 /* XXX: parse message */
1617ad97 1333 }
2a42b5c3 1334 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b6892136 1335 if (ret != 3)
8b1ab7bf 1336 return -1;
b6892136 1337 id = buf[0];
80fb8234 1338 len = AV_RB16(buf + 1);
b6892136
FB
1339#ifdef DEBUG_RTP_TCP
1340 printf("id=%d len=%d\n", id, len);
1341#endif
8b1ab7bf 1342 if (len > buf_size || len < 12)
1617ad97
FB
1343 goto redo;
1344 /* get the data */
2a42b5c3 1345 ret = url_readbuf(rt->rtsp_hd, buf, len);
b6892136 1346 if (ret != len)
8b1ab7bf 1347 return -1;
985b05d3 1348 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1349 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1350 return -1;
115329f1 1351
1617ad97 1352 /* find the matching stream */
8b1ab7bf
FB
1353 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1354 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1355 if (id >= rtsp_st->interleaved_min &&
1356 id <= rtsp_st->interleaved_max)
1617ad97
FB
1357 goto found;
1358 }
1359 goto redo;
1360 found:
8b1ab7bf
FB
1361 *prtsp_st = rtsp_st;
1362 return len;
1617ad97
FB
1363}
1364
115329f1 1365static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
8b1ab7bf 1366 uint8_t *buf, int buf_size)
1617ad97 1367{
8b1ab7bf 1368 RTSPState *rt = s->priv_data;
1617ad97
FB
1369 RTSPStream *rtsp_st;
1370 fd_set rfds;
7e726132 1371 int fd, fd_max, n, i, ret, tcp_fd;
1617ad97
FB
1372 struct timeval tv;
1373
1374 for(;;) {
b7b8fc34 1375 if (url_interrupt_cb())
a960a1e0 1376 return AVERROR(EINTR);
1617ad97 1377 FD_ZERO(&rfds);
46ff7a5f
LA
1378 if (rt->rtsp_hd) {
1379 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1380 FD_SET(tcp_fd, &rfds);
1381 } else {
1382 fd_max = 0;
1383 tcp_fd = -1;
1384 }
8b1ab7bf
FB
1385 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1386 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1387 if (rtsp_st->rtp_handle) {
2fea9650
RB
1388 /* currently, we cannot probe RTCP handle because of
1389 * blocking restrictions */
bc8763cd
RB
1390 fd = url_get_file_handle(rtsp_st->rtp_handle);
1391 if (fd > fd_max)
1392 fd_max = fd;
1393 FD_SET(fd, &rfds);
f830c9a4 1394 }
1617ad97 1395 }
1617ad97 1396 tv.tv_sec = 0;
b7b8fc34 1397 tv.tv_usec = 100 * 1000;
1617ad97
FB
1398 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1399 if (n > 0) {
8b1ab7bf
FB
1400 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1401 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1402 if (rtsp_st->rtp_handle) {
bc8763cd
RB
1403 fd = url_get_file_handle(rtsp_st->rtp_handle);
1404 if (FD_ISSET(fd, &rfds)) {
2fea9650
RB
1405 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1406 if (ret > 0) {
1407 *prtsp_st = rtsp_st;
1408 return ret;
1409 }
1617ad97
FB
1410 }
1411 }
1412 }
7e726132
RB
1413 if (FD_ISSET(tcp_fd, &rfds)) {
1414 RTSPMessageHeader reply;
1415
1416 rtsp_read_reply(s, &reply, NULL, 0);
1417 /* XXX: parse message */
1418 }
1617ad97
FB
1419 }
1420 }
1421}
1422
1423static int rtsp_read_packet(AVFormatContext *s,
1424 AVPacket *pkt)
1425{
1426 RTSPState *rt = s->priv_data;
8b1ab7bf
FB
1427 RTSPStream *rtsp_st;
1428 int ret, len;
e49906c3 1429 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
30e79845
RB
1430 RTSPMessageHeader reply1, *reply = &reply1;
1431 char cmd[1024];
8b1ab7bf 1432
572c6a38 1433 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1434 int i;
572c6a38 1435 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1436
572c6a38
RB
1437 for (i = 0; i < s->nb_streams; i++)
1438 cache[i] = s->streams[i]->discard;
1439
1440 if (!rt->need_subscription) {
1441 if (memcmp (cache, rt->real_setup_cache,
1442 sizeof(enum AVDiscard) * s->nb_streams)) {
1443 av_strlcatf(cmd, sizeof(cmd),
1444 "SET_PARAMETER %s RTSP/1.0\r\n"
1445 "Unsubscribe: %s\r\n",
1446 s->filename, rt->last_subscription);
1447 rtsp_send_cmd(s, cmd, reply, NULL);
1448 if (reply->status_code != RTSP_STATUS_OK)
1449 return AVERROR_INVALIDDATA;
1450 rt->need_subscription = 1;
1451 }
1256d16b 1452 }
1256d16b 1453
572c6a38
RB
1454 if (rt->need_subscription) {
1455 int r, rule_nr, first = 1;
1456
1457 memcpy(rt->real_setup_cache, cache,
1458 sizeof(enum AVDiscard) * s->nb_streams);
1459 rt->last_subscription[0] = 0;
1460
1461 snprintf(cmd, sizeof(cmd),
1462 "SET_PARAMETER %s RTSP/1.0\r\n"
1463 "Subscribe: ",
1464 s->filename);
1465 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1466 rule_nr = 0;
1467 for (r = 0; r < s->nb_streams; r++) {
1468 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1469 if (s->streams[r]->discard != AVDISCARD_ALL) {
1470 if (!first)
1471 av_strlcat(rt->last_subscription, ",",
1472 sizeof(rt->last_subscription));
1473 ff_rdt_subscribe_rule(
1474 rt->last_subscription,
1475 sizeof(rt->last_subscription), i, rule_nr);
1476 first = 0;
1477 }
1478 rule_nr++;
1479 }
1480 }
1481 }
1482 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1483 rtsp_send_cmd(s, cmd, reply, NULL);
1484 if (reply->status_code != RTSP_STATUS_OK)
1485 return AVERROR_INVALIDDATA;
1486 rt->need_subscription = 0;
1487
1488 if (rt->state == RTSP_STATE_PLAYING)
1489 rtsp_read_play (s);
1490 }
1256d16b
RB
1491 }
1492
8b1ab7bf 1493 /* get next frames from the same RTP packet */
0a861b6f 1494 if (rt->cur_transport_priv) {
119b4668 1495 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1496 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
4fce284c 1497 else
0a861b6f 1498 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
8b1ab7bf 1499 if (ret == 0) {
0a861b6f 1500 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1501 return 0;
1502 } else if (ret == 1) {
1503 return 0;
1504 } else {
0a861b6f 1505 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1506 }
1507 }
1617ad97 1508
8b1ab7bf
FB
1509 /* read next RTP packet */
1510 redo:
90abbdba 1511 switch(rt->lower_transport) {
1617ad97 1512 default:
90abbdba 1513 case RTSP_LOWER_TRANSPORT_TCP:
8b1ab7bf 1514 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1617ad97 1515 break;
90abbdba
RB
1516 case RTSP_LOWER_TRANSPORT_UDP:
1517 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
8b1ab7bf 1518 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
0a861b6f
RB
1519 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1520 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1617ad97
FB
1521 break;
1522 }
8b1ab7bf 1523 if (len < 0)
489b0d4d 1524 return len;
119b4668 1525 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1526 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
4fce284c 1527 else
0a861b6f 1528 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
8b1ab7bf
FB
1529 if (ret < 0)
1530 goto redo;
1531 if (ret == 1) {
1532 /* more packets may follow, so we save the RTP context */
0a861b6f 1533 rt->cur_transport_priv = rtsp_st->transport_priv;
8b1ab7bf 1534 }
30e79845
RB
1535
1536 /* send dummy request to keep TCP connection alive */
1537 if ((rt->server_type == RTSP_SERVER_WMS ||
1538 rt->server_type == RTSP_SERVER_REAL) &&
1539 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1540 if (rt->server_type == RTSP_SERVER_WMS) {
1541 snprintf(cmd, sizeof(cmd) - 1,
1542 "GET_PARAMETER %s RTSP/1.0\r\n",
1543 s->filename);
1544 rtsp_send_cmd_async(s, cmd, reply, NULL);
1545 } else {
1546 rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n",
1547 reply, NULL);
1548 }
1549 }
1550
8b1ab7bf 1551 return 0;
1617ad97
FB
1552}
1553
ff762d6e 1554static int rtsp_read_play(AVFormatContext *s)
b7b8fc34 1555{
ff762d6e 1556 RTSPState *rt = s->priv_data;
a9e534d5 1557 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1558 char cmd[1024];
1559
bc874dae 1560 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
ff762d6e 1561
2e889ae4 1562 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1563 if (rt->state == RTSP_STATE_PAUSED) {
1564 snprintf(cmd, sizeof(cmd),
1565 "PLAY %s RTSP/1.0\r\n",
1566 s->filename);
1567 } else {
1568 snprintf(cmd, sizeof(cmd),
1569 "PLAY %s RTSP/1.0\r\n"
1570 "Range: npt=%0.3f-\r\n",
1571 s->filename,
1572 (double)rt->seek_timestamp / AV_TIME_BASE);
1573 }
1574 rtsp_send_cmd(s, cmd, reply, NULL);
1575 if (reply->status_code != RTSP_STATUS_OK) {
1576 return -1;
1577 }
1256d16b 1578 }
5f86057f
RB
1579 rt->state = RTSP_STATE_PLAYING;
1580 return 0;
b7b8fc34
FB
1581}
1582
ff762d6e
FB
1583/* pause the stream */
1584static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1585{
ff762d6e 1586 RTSPState *rt = s->priv_data;
a9e534d5 1587 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1588 char cmd[1024];
1589
b7b8fc34 1590 rt = s->priv_data;
115329f1 1591
ff762d6e
FB
1592 if (rt->state != RTSP_STATE_PLAYING)
1593 return 0;
2e889ae4 1594 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1595 snprintf(cmd, sizeof(cmd),
1596 "PAUSE %s RTSP/1.0\r\n",
1597 s->filename);
1598 rtsp_send_cmd(s, cmd, reply, NULL);
1599 if (reply->status_code != RTSP_STATUS_OK) {
1600 return -1;
1601 }
1256d16b 1602 }
5f86057f
RB
1603 rt->state = RTSP_STATE_PAUSED;
1604 return 0;
b7b8fc34
FB
1605}
1606
115329f1 1607static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1608 int64_t timestamp, int flags)
ff762d6e
FB
1609{
1610 RTSPState *rt = s->priv_data;
115329f1 1611
50755217 1612 rt->seek_timestamp = av_rescale_q(timestamp, s->streams[stream_index]->time_base, AV_TIME_BASE_Q);
ff762d6e
FB
1613 switch(rt->state) {
1614 default:
1615 case RTSP_STATE_IDLE:
1616 break;
1617 case RTSP_STATE_PLAYING:
1618 if (rtsp_read_play(s) != 0)
1619 return -1;
1620 break;
1621 case RTSP_STATE_PAUSED:
1622 rt->state = RTSP_STATE_IDLE;
1623 break;
1624 }
1625 return 0;
1626}
1627
1617ad97
FB
1628static int rtsp_read_close(AVFormatContext *s)
1629{
1630 RTSPState *rt = s->priv_data;
a9e534d5 1631 RTSPMessageHeader reply1, *reply = &reply1;
1617ad97
FB
1632 char cmd[1024];
1633
b6892136 1634#if 0
1617ad97 1635 /* NOTE: it is valid to flush the buffer here */
90abbdba 1636 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1637 url_fclose(&rt->rtsp_gb);
1638 }
b6892136 1639#endif
115329f1 1640 snprintf(cmd, sizeof(cmd),
b6892136 1641 "TEARDOWN %s RTSP/1.0\r\n",
1617ad97
FB
1642 s->filename);
1643 rtsp_send_cmd(s, cmd, reply, NULL);
1644
8b1ab7bf 1645 rtsp_close_streams(rt);
1617ad97
FB
1646 url_close(rt->rtsp_hd);
1647 return 0;
1648}
1649
b250f9c6 1650#if CONFIG_RTSP_DEMUXER
d2a067d1 1651AVInputFormat rtsp_demuxer = {
1617ad97 1652 "rtsp",
bde15e74 1653 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1654 sizeof(RTSPState),
1655 rtsp_probe,
1656 rtsp_read_header,
1657 rtsp_read_packet,
1658 rtsp_read_close,
ff762d6e 1659 rtsp_read_seek,
bb76a117 1660 .flags = AVFMT_NOFILE,
ff762d6e
FB
1661 .read_play = rtsp_read_play,
1662 .read_pause = rtsp_read_pause,
1617ad97 1663};
96862926 1664#endif
1617ad97 1665
cb1fdc61 1666static int sdp_probe(AVProbeData *p1)
93ced3e8 1667{
0e1ceacd 1668 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1669
1670 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1671 while (p < p_end && *p != '\0') {
f7d78f36 1672 if (p + sizeof("c=IN IP4") - 1 < p_end && av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1673 return AVPROBE_SCORE_MAX / 2;
0e1ceacd
MN
1674
1675 while(p < p_end - 1 && *p != '\n') p++;
1676 if (++p >= p_end)
cb1fdc61 1677 break;
cb1fdc61
FB
1678 if (*p == '\r')
1679 p++;
1680 }
93ced3e8
FB
1681 return 0;
1682}
1683
1684#define SDP_MAX_SIZE 8192
1685
1686static int sdp_read_header(AVFormatContext *s,
1687 AVFormatParameters *ap)
1688{
8b1ab7bf 1689 RTSPState *rt = s->priv_data;
93ced3e8
FB
1690 RTSPStream *rtsp_st;
1691 int size, i, err;
1692 char *content;
1693 char url[1024];
1694
1695 /* read the whole sdp file */
1696 /* XXX: better loading */
1697 content = av_malloc(SDP_MAX_SIZE);
899681cd 1698 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1699 if (size <= 0) {
1700 av_free(content);
1701 return AVERROR_INVALIDDATA;
1702 }
1703 content[size] ='\0';
1704
1705 sdp_parse(s, content);
1706 av_free(content);
1707
1708 /* open each RTP stream */
8b1ab7bf
FB
1709 for(i=0;i<rt->nb_rtsp_streams;i++) {
1710 rtsp_st = rt->rtsp_streams[i];
115329f1 1711
d2bf42be 1712 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
115329f1 1713 inet_ntoa(rtsp_st->sdp_ip),
93ced3e8 1714 rtsp_st->sdp_port,
d2bf42be 1715 rtsp_st->sdp_port,
93ced3e8 1716 rtsp_st->sdp_ttl);
dbf30963 1717 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1718 err = AVERROR_INVALIDDATA;
1719 goto fail;
1720 }
ee0cb67f 1721 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1722 goto fail;
93ced3e8
FB
1723 }
1724 return 0;
1725 fail:
8b1ab7bf 1726 rtsp_close_streams(rt);
93ced3e8
FB
1727 return err;
1728}
1729
1730static int sdp_read_packet(AVFormatContext *s,
1731 AVPacket *pkt)
1732{
8b1ab7bf 1733 return rtsp_read_packet(s, pkt);
93ced3e8
FB
1734}
1735
1736static int sdp_read_close(AVFormatContext *s)
1737{
8b1ab7bf
FB
1738 RTSPState *rt = s->priv_data;
1739 rtsp_close_streams(rt);
93ced3e8
FB
1740 return 0;
1741}
1742
b250f9c6 1743#if CONFIG_SDP_DEMUXER
ff70e601 1744AVInputFormat sdp_demuxer = {
93ced3e8 1745 "sdp",
bde15e74 1746 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1747 sizeof(RTSPState),
1748 sdp_probe,
1749 sdp_read_header,
1750 sdp_read_packet,
1751 sdp_read_close,
1752};
ff70e601 1753#endif
93ced3e8 1754
b250f9c6 1755#if CONFIG_REDIR_DEMUXER
1617ad97
FB
1756/* dummy redirector format (used directly in av_open_input_file now) */
1757static int redir_probe(AVProbeData *pd)
1758{
1759 const char *p;
1760 p = pd->buf;
36aa7bc2 1761 skip_spaces(&p);
f7d78f36
MR
1762 if (av_strstart(p, "http://", NULL) ||
1763 av_strstart(p, "rtsp://", NULL))
1617ad97
FB
1764 return AVPROBE_SCORE_MAX;
1765 return 0;
1766}
1767
e8acf0ed 1768static int redir_read_header(AVFormatContext *s, AVFormatParameters *ap)
1617ad97
FB
1769{
1770 char buf[4096], *q;
1771 int c;
1772 AVFormatContext *ic = NULL;
e8acf0ed 1773 ByteIOContext *f = s->pb;
1617ad97
FB
1774
1775 /* parse each URL and try to open it */
1776 c = url_fgetc(f);
1777 while (c != URL_EOF) {
1778 /* skip spaces */
1779 for(;;) {
1780 if (!redir_isspace(c))
1781 break;
1782 c = url_fgetc(f);
1783 }
1784 if (c == URL_EOF)
1785 break;
1786 /* record url */
1787 q = buf;
1788 for(;;) {
1789 if (c == URL_EOF || redir_isspace(c))
1790 break;
1791 if ((q - buf) < sizeof(buf) - 1)
1792 *q++ = c;
1793 c = url_fgetc(f);
1794 }
1795 *q = '\0';
1796 //printf("URL='%s'\n", buf);
1797 /* try to open the media file */
1798 if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
1799 break;
1800 }
1617ad97 1801 if (!ic)
6f3e0b21 1802 return AVERROR(EIO);
e8acf0ed
LA
1803
1804 *s = *ic;
1805 url_fclose(f);
1806
1807 return 0;
1617ad97
FB
1808}
1809
d2a067d1 1810AVInputFormat redir_demuxer = {
1617ad97 1811 "redir",
bde15e74 1812 NULL_IF_CONFIG_SMALL("Redirector format"),
1617ad97
FB
1813 0,
1814 redir_probe,
e8acf0ed 1815 redir_read_header,
1617ad97
FB
1816 NULL,
1817 NULL,
1818};
e7047005 1819#endif