Mark AOT_ALS as a supported MPEG-4 audio object type.
[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
7246177d
AJ
22/* needed by inet_aton() */
23#define _SVID_SOURCE
24
f9337897 25#include "libavutil/base64.h"
245976da 26#include "libavutil/avstring.h"
6a5d31ac 27#include "libavutil/intreadwrite.h"
1617ad97
FB
28#include "avformat.h"
29
db0ed93e 30#include <sys/time.h>
b250f9c6 31#if HAVE_SYS_SELECT_H
933bd8e2 32#include <sys/select.h>
6ad1c9c9 33#endif
ea452b54 34#include <strings.h>
42572ef5 35#include "network.h"
c971ff19 36#include "rtsp.h"
1617ad97 37
302879cb 38#include "rtpdec.h"
e9dea59f 39#include "rdt.h"
1a30d541 40#include "rtp_asf.h"
e6327fba 41#include "rtp_vorbis.h"
4934884a 42
1617ad97 43//#define DEBUG
b6892136 44//#define DEBUG_RTP_TCP
1617ad97 45
ff762d6e
FB
46static int rtsp_read_play(AVFormatContext *s);
47
c482500f 48#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 49int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 50#endif
85fb7b34 51
1617ad97
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52static int rtsp_probe(AVProbeData *p)
53{
f7d78f36 54 if (av_strstart(p->filename, "rtsp:", NULL))
1617ad97
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55 return AVPROBE_SCORE_MAX;
56 return 0;
57}
58
1ef36a70 59#define SPACE_CHARS " \t\r\n"
da1e126e
RB
60/* we use memchr() instead of strchr() here because strchr() will return
61 * the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */
62#define redir_isspace(c) memchr(SPACE_CHARS, c, 4)
1617ad97
FB
63static void skip_spaces(const char **pp)
64{
65 const char *p;
66 p = *pp;
67 while (redir_isspace(*p))
68 p++;
69 *pp = p;
70}
71
1ef36a70
RB
72static void get_word_until_chars(char *buf, int buf_size,
73 const char *sep, const char **pp)
1617ad97
FB
74{
75 const char *p;
76 char *q;
77
78 p = *pp;
79 skip_spaces(&p);
80 q = buf;
81 while (!strchr(sep, *p) && *p != '\0') {
82 if ((q - buf) < buf_size - 1)
83 *q++ = *p;
84 p++;
85 }
86 if (buf_size > 0)
87 *q = '\0';
88 *pp = p;
89}
90
1ef36a70
RB
91static void get_word_sep(char *buf, int buf_size, const char *sep,
92 const char **pp)
1617ad97 93{
1ef36a70
RB
94 if (**pp == '/') (*pp)++;
95 get_word_until_chars(buf, buf_size, sep, pp);
96}
1617ad97 97
1ef36a70
RB
98static void get_word(char *buf, int buf_size, const char **pp)
99{
100 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
101}
102
93ced3e8
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103/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other
104 params>] */
4934884a 105static int sdp_parse_rtpmap(AVCodecContext *codec, RTSPStream *rtsp_st, int payload_type, const char *p)
93ced3e8
FB
106{
107 char buf[256];
d1ccf0e0
RD
108 int i;
109 AVCodec *c;
7b49ce2e 110 const char *c_name;
93ced3e8 111
d1ccf0e0
RD
112 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
113 see if we can handle this kind of payload */
93ced3e8 114 get_word_sep(buf, sizeof(buf), "/", &p);
d1ccf0e0 115 if (payload_type >= RTP_PT_PRIVATE) {
4934884a
RM
116 RTPDynamicProtocolHandler *handler= RTPFirstDynamicPayloadHandler;
117 while(handler) {
743b3890 118 if (!strcasecmp(buf, handler->enc_name) && (codec->codec_type == handler->codec_type)) {
4934884a
RM
119 codec->codec_id = handler->codec_id;
120 rtsp_st->dynamic_handler= handler;
121 if(handler->open) {
122 rtsp_st->dynamic_protocol_context= handler->open();
123 }
d1ccf0e0
RD
124 break;
125 }
4934884a
RM
126 handler= handler->next;
127 }
93ced3e8 128 } else {
d1ccf0e0
RD
129 /* We are in a standard case ( from http://www.iana.org/assignments/rtp-parameters) */
130 /* search into AVRtpPayloadTypes[] */
7ed19d7f 131 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
132 }
133
134 c = avcodec_find_decoder(codec->codec_id);
135 if (c && c->name)
7b49ce2e 136 c_name = c->name;
d1ccf0e0
RD
137 else
138 c_name = (char *)NULL;
139
140 if (c_name) {
141 get_word_sep(buf, sizeof(buf), "/", &p);
142 i = atoi(buf);
143 switch (codec->codec_type) {
144 case CODEC_TYPE_AUDIO:
145 av_log(codec, AV_LOG_DEBUG, " audio codec set to : %s\n", c_name);
146 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
147 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
148 if (i > 0) {
149 codec->sample_rate = i;
150 get_word_sep(buf, sizeof(buf), "/", &p);
151 i = atoi(buf);
152 if (i > 0)
153 codec->channels = i;
d0deedcb
RM
154 // TODO: there is a bug here; if it is a mono stream, and less than 22000Hz, faad upconverts to stereo and twice the
155 // frequency. No problem, but the sample rate is being set here by the sdp line. Upcoming patch forthcoming. (rdm)
d1ccf0e0
RD
156 }
157 av_log(codec, AV_LOG_DEBUG, " audio samplerate set to : %i\n", codec->sample_rate);
158 av_log(codec, AV_LOG_DEBUG, " audio channels set to : %i\n", codec->channels);
159 break;
160 case CODEC_TYPE_VIDEO:
161 av_log(codec, AV_LOG_DEBUG, " video codec set to : %s\n", c_name);
162 break;
163 default:
164 break;
165 }
166 return 0;
93ced3e8 167 }
d1ccf0e0
RD
168
169 return -1;
93ced3e8
FB
170}
171
172/* return the length and optionnaly the data */
173static int hex_to_data(uint8_t *data, const char *p)
174{
175 int c, len, v;
176
177 len = 0;
178 v = 1;
179 for(;;) {
180 skip_spaces(&p);
6a8c8b36 181 if (*p == '\0')
93ced3e8
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182 break;
183 c = toupper((unsigned char)*p++);
184 if (c >= '0' && c <= '9')
185 c = c - '0';
186 else if (c >= 'A' && c <= 'F')
187 c = c - 'A' + 10;
188 else
189 break;
190 v = (v << 4) | c;
191 if (v & 0x100) {
192 if (data)
193 data[len] = v;
194 len++;
195 v = 1;
196 }
197 }
198 return len;
199}
200
e6327fba
RB
201static void sdp_parse_fmtp_config(AVCodecContext * codec, void *ctx,
202 char *attr, char *value)
d1ccf0e0
RD
203{
204 switch (codec->codec_id) {
205 case CODEC_ID_MPEG4:
cbee7a69 206 case CODEC_ID_AAC:
d1ccf0e0
RD
207 if (!strcmp(attr, "config")) {
208 /* decode the hexa encoded parameter */
209 int len = hex_to_data(NULL, value);
7d09a993
RB
210 if (codec->extradata)
211 av_free(codec->extradata);
d1ccf0e0
RD
212 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
213 if (!codec->extradata)
214 return;
215 codec->extradata_size = len;
216 hex_to_data(codec->extradata, value);
217 }
218 break;
e6327fba
RB
219 case CODEC_ID_VORBIS:
220 ff_vorbis_parse_fmtp_config(codec, ctx, attr, value);
221 break;
d1ccf0e0
RD
222 default:
223 break;
224 }
225 return;
226}
227
644e7acb 228typedef struct {
7b49ce2e 229 const char *str;
d1ccf0e0
RD
230 uint16_t type;
231 uint32_t offset;
644e7acb 232} AttrNameMap;
d1ccf0e0
RD
233
234/* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
235#define ATTR_NAME_TYPE_INT 0
236#define ATTR_NAME_TYPE_STR 1
644e7acb 237static const AttrNameMap attr_names[]=
d1ccf0e0 238{
be73a544
LA
239 {"SizeLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, sizelength)},
240 {"IndexLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexlength)},
241 {"IndexDeltaLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexdeltalength)},
242 {"profile-level-id", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, profile_level_id)},
243 {"StreamType", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, streamtype)},
244 {"mode", ATTR_NAME_TYPE_STR, offsetof(RTPPayloadData, mode)},
d1ccf0e0
RD
245 {NULL, -1, -1},
246};
247
d0deedcb
RM
248/** parse the attribute line from the fmtp a line of an sdp resonse. This is broken out as a function
249* because it is used in rtp_h264.c, which is forthcoming.
250*/
251int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size)
252{
253 skip_spaces(p);
78f731de 254 if(**p) {
d0deedcb
RM
255 get_word_sep(attr, attr_size, "=", p);
256 if (**p == '=')
257 (*p)++;
258 get_word_sep(value, value_size, ";", p);
259 if (**p == ';')
260 (*p)++;
261 return 1;
262 }
263 return 0;
264}
265
d1ccf0e0
RD
266/* parse a SDP line and save stream attributes */
267static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
268{
269 char attr[256];
373afbaf
RB
270 /* Vorbis setup headers can be up to 12KB and are sent base64
271 * encoded, giving a 12KB * (4/3) = 16KB FMTP line. */
272 char value[16384];
d1ccf0e0
RD
273 int i;
274
275 RTSPStream *rtsp_st = st->priv_data;
01f4895c 276 AVCodecContext *codec = st->codec;
be73a544 277 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
278
279 /* loop on each attribute */
1ad20f96
RM
280 while(rtsp_next_attr_and_value(&p, attr, sizeof(attr), value, sizeof(value)))
281 {
bb270c08 282 /* grab the codec extra_data from the config parameter of the fmtp line */
e6327fba
RB
283 sdp_parse_fmtp_config(codec, rtsp_st->dynamic_protocol_context,
284 attr, value);
d1ccf0e0
RD
285 /* Looking for a known attribute */
286 for (i = 0; attr_names[i].str; ++i) {
287 if (!strcasecmp(attr, attr_names[i].str)) {
288 if (attr_names[i].type == ATTR_NAME_TYPE_INT)
289 *(int *)((char *)rtp_payload_data + attr_names[i].offset) = atoi(value);
290 else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
291 *(char **)((char *)rtp_payload_data + attr_names[i].offset) = av_strdup(value);
bb270c08 292 }
93ced3e8 293 }
93ced3e8
FB
294 }
295}
296
31693e00
RM
297/** Parse a string \p in the form of Range:npt=xx-xx, and determine the start
298 * and end time.
299 * Used for seeking in the rtp stream.
300 */
301static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
302{
303 char buf[256];
304
305 skip_spaces(&p);
f7d78f36 306 if (!av_stristart(p, "npt=", &p))
31693e00
RM
307 return;
308
309 *start = AV_NOPTS_VALUE;
310 *end = AV_NOPTS_VALUE;
311
312 get_word_sep(buf, sizeof(buf), "-", &p);
313 *start = parse_date(buf, 1);
314 if (*p == '-') {
315 p++;
316 get_word_sep(buf, sizeof(buf), "-", &p);
317 *end = parse_date(buf, 1);
318 }
319// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
320// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
321}
322
93ced3e8
FB
323typedef struct SDPParseState {
324 /* SDP only */
325 struct in_addr default_ip;
326 int default_ttl;
cb760a47 327 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
328} SDPParseState;
329
330static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
331 int letter, const char *buf)
332{
8b1ab7bf 333 RTSPState *rt = s->priv_data;
1617ad97
FB
334 char buf1[64], st_type[64];
335 const char *p;
fb65d2ca
DP
336 enum CodecType codec_type;
337 int payload_type, i;
1617ad97
FB
338 AVStream *st;
339 RTSPStream *rtsp_st;
93ced3e8
FB
340 struct in_addr sdp_ip;
341 int ttl;
342
67c9cd69 343 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
344
345 p = buf;
cb760a47
RB
346 if (s1->skip_media && letter != 'm')
347 return;
1617ad97 348 switch(letter) {
93ced3e8
FB
349 case 'c':
350 get_word(buf1, sizeof(buf1), &p);
351 if (strcmp(buf1, "IN") != 0)
352 return;
353 get_word(buf1, sizeof(buf1), &p);
354 if (strcmp(buf1, "IP4") != 0)
355 return;
356 get_word_sep(buf1, sizeof(buf1), "/", &p);
357 if (inet_aton(buf1, &sdp_ip) == 0)
358 return;
359 ttl = 16;
360 if (*p == '/') {
361 p++;
362 get_word_sep(buf1, sizeof(buf1), "/", &p);
363 ttl = atoi(buf1);
364 }
365 if (s->nb_streams == 0) {
366 s1->default_ip = sdp_ip;
367 s1->default_ttl = ttl;
368 } else {
369 st = s->streams[s->nb_streams - 1];
370 rtsp_st = st->priv_data;
371 rtsp_st->sdp_ip = sdp_ip;
372 rtsp_st->sdp_ttl = ttl;
373 }
374 break;
1617ad97 375 case 's':
da61e413 376 av_metadata_set(&s->metadata, "title", p);
1617ad97
FB
377 break;
378 case 'i':
379 if (s->nb_streams == 0) {
da61e413 380 av_metadata_set(&s->metadata, "comment", p);
1617ad97
FB
381 break;
382 }
383 break;
384 case 'm':
385 /* new stream */
cb760a47 386 s1->skip_media = 0;
1617ad97
FB
387 get_word(st_type, sizeof(st_type), &p);
388 if (!strcmp(st_type, "audio")) {
389 codec_type = CODEC_TYPE_AUDIO;
390 } else if (!strcmp(st_type, "video")) {
391 codec_type = CODEC_TYPE_VIDEO;
090438cc
RB
392 } else if (!strcmp(st_type, "application")) {
393 codec_type = CODEC_TYPE_DATA;
1617ad97 394 } else {
cb760a47 395 s1->skip_media = 1;
1617ad97
FB
396 return;
397 }
1617ad97
FB
398 rtsp_st = av_mallocz(sizeof(RTSPStream));
399 if (!rtsp_st)
400 return;
8b1ab7bf
FB
401 rtsp_st->stream_index = -1;
402 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
403
404 rtsp_st->sdp_ip = s1->default_ip;
405 rtsp_st->sdp_ttl = s1->default_ttl;
406
93ced3e8
FB
407 get_word(buf1, sizeof(buf1), &p); /* port */
408 rtsp_st->sdp_port = atoi(buf1);
409
410 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 411
93ced3e8
FB
412 /* XXX: handle list of formats */
413 get_word(buf1, sizeof(buf1), &p); /* format list */
414 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 415
7ed19d7f 416 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
417 /* no corresponding stream */
418 } else {
419 st = av_new_stream(s, 0);
420 if (!st)
421 return;
422 st->priv_data = rtsp_st;
423 rtsp_st->stream_index = st->index;
01f4895c 424 st->codec->codec_type = codec_type;
d1ccf0e0 425 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 426 /* if standard payload type, we can find the codec right now */
bf6d9818 427 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
428 }
429 }
1617ad97 430 /* put a default control url */
75e61b0e 431 av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url));
1617ad97
FB
432 break;
433 case 'a':
f7d78f36 434 if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
1617ad97
FB
435 char proto[32];
436 /* get the control url */
437 st = s->streams[s->nb_streams - 1];
438 rtsp_st = st->priv_data;
115329f1 439
1617ad97 440 /* XXX: may need to add full url resolution */
6ba5cbc6 441 url_split(proto, sizeof(proto), NULL, 0, NULL, 0, NULL, NULL, 0, p);
1617ad97
FB
442 if (proto[0] == '\0') {
443 /* relative control URL */
75e61b0e
MR
444 av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url));
445 av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 446 } else {
75e61b0e 447 av_strlcpy(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 448 }
83d14c85 449 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 450 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 451 get_word(buf1, sizeof(buf1), &p);
93ced3e8 452 payload_type = atoi(buf1);
83d14c85 453 st = s->streams[s->nb_streams - 1];
ff16f551
RB
454 rtsp_st = st->priv_data;
455 sdp_parse_rtpmap(st->codec, rtsp_st, payload_type, p);
f7d78f36 456 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 457 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 458 get_word(buf1, sizeof(buf1), &p);
93ced3e8
FB
459 payload_type = atoi(buf1);
460 for(i = 0; i < s->nb_streams;i++) {
461 st = s->streams[i];
462 rtsp_st = st->priv_data;
463 if (rtsp_st->sdp_payload_type == payload_type) {
4934884a 464 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 465 if(!rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf)) {
4934884a
RM
466 sdp_parse_fmtp(st, p);
467 }
468 } else {
ed787542 469 sdp_parse_fmtp(st, p);
4934884a 470 }
93ced3e8
FB
471 }
472 }
f7d78f36 473 } else if(av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
474 // let dynamic protocol handlers have a stab at the line.
475 get_word(buf1, sizeof(buf1), &p);
476 payload_type = atoi(buf1);
477 for(i = 0; i < s->nb_streams;i++) {
478 st = s->streams[i];
479 rtsp_st = st->priv_data;
480 if (rtsp_st->sdp_payload_type == payload_type) {
481 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 482 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf);
d0deedcb
RM
483 }
484 }
485 }
f7d78f36 486 } else if(av_strstart(p, "range:", &p)) {
31693e00
RM
487 int64_t start, end;
488
489 // this is so that seeking on a streamed file can work.
490 rtsp_parse_range_npt(p, &start, &end);
491 s->start_time= start;
492 s->duration= (end==AV_NOPTS_VALUE)?AV_NOPTS_VALUE:end-start; // AV_NOPTS_VALUE means live broadcast (and can't seek)
119b4668
RB
493 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
494 if (atoi(p) == 1)
495 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
496 } else {
497 if (rt->server_type == RTSP_SERVER_WMS)
498 ff_wms_parse_sdp_a_line(s, p);
499 if (s->nb_streams > 0) {
c4a3d032
RB
500 if (rt->server_type == RTSP_SERVER_REAL)
501 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
502
503 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
504 if (rtsp_st->dynamic_handler &&
505 rtsp_st->dynamic_handler->parse_sdp_a_line)
506 rtsp_st->dynamic_handler->parse_sdp_a_line(s, s->nb_streams - 1,
507 rtsp_st->dynamic_protocol_context, buf);
1a30d541 508 }
1617ad97
FB
509 }
510 break;
511 }
512}
513
5c91a675 514static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
515{
516 const char *p;
517 int letter;
9211bcdd
RB
518 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
519 * contain long SDP lines containing complete ASF Headers (several
520 * kB) or arrays of MDPR (RM stream descriptor) headers plus
521 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
522 * buffer is large.
523 *
524 * The Vorbis FMTP line can be up to 16KB - see sdp_parse_fmtp. */
525 char buf[16384], *q;
93ced3e8 526 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 527
93ced3e8 528 memset(s1, 0, sizeof(SDPParseState));
1617ad97
FB
529 p = content;
530 for(;;) {
531 skip_spaces(&p);
532 letter = *p;
533 if (letter == '\0')
534 break;
535 p++;
536 if (*p != '=')
537 goto next_line;
538 p++;
539 /* get the content */
540 q = buf;
b6892136 541 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
542 if ((q - buf) < sizeof(buf) - 1)
543 *q++ = *p;
544 p++;
545 }
546 *q = '\0';
93ced3e8 547 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
548 next_line:
549 while (*p != '\n' && *p != '\0')
550 p++;
551 if (*p == '\n')
552 p++;
553 }
554 return 0;
555}
556
557static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
558{
559 const char *p;
560 int v;
561
562 p = *pp;
563 skip_spaces(&p);
564 v = strtol(p, (char **)&p, 10);
565 if (*p == '-') {
566 p++;
567 *min_ptr = v;
568 v = strtol(p, (char **)&p, 10);
569 *max_ptr = v;
570 } else {
571 *min_ptr = v;
572 *max_ptr = v;
573 }
574 *pp = p;
575}
576
577/* XXX: only one transport specification is parsed */
a9e534d5 578static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
579{
580 char transport_protocol[16];
581 char profile[16];
582 char lower_transport[16];
583 char parameter[16];
584 RTSPTransportField *th;
585 char buf[256];
115329f1 586
1617ad97 587 reply->nb_transports = 0;
115329f1 588
1617ad97
FB
589 for(;;) {
590 skip_spaces(&p);
591 if (*p == '\0')
592 break;
593
594 th = &reply->transports[reply->nb_transports];
595
115329f1 596 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 597 "/", &p);
e1502118 598 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
599 get_word_sep(profile, sizeof(profile), "/;,", &p);
600 lower_transport[0] = '\0';
601 /* rtp/avp/<protocol> */
602 if (*p == '/') {
7ecc634e
LB
603 get_word_sep(lower_transport, sizeof(lower_transport),
604 ";,", &p);
119b4668
RB
605 }
606 th->transport = RTSP_TRANSPORT_RTP;
607 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
608 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 609 /* x-pn-tng/<protocol> */
e1502118
LB
610 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
611 profile[0] = '\0';
119b4668 612 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 613 }
b6892136 614 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 615 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 616 else
90abbdba 617 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 618
1617ad97
FB
619 if (*p == ';')
620 p++;
621 /* get each parameter */
622 while (*p != '\0' && *p != ',') {
623 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
624 if (!strcmp(parameter, "port")) {
625 if (*p == '=') {
626 p++;
627 rtsp_parse_range(&th->port_min, &th->port_max, &p);
628 }
629 } else if (!strcmp(parameter, "client_port")) {
630 if (*p == '=') {
631 p++;
115329f1 632 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
633 &th->client_port_max, &p);
634 }
635 } else if (!strcmp(parameter, "server_port")) {
636 if (*p == '=') {
637 p++;
115329f1 638 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
639 &th->server_port_max, &p);
640 }
641 } else if (!strcmp(parameter, "interleaved")) {
642 if (*p == '=') {
643 p++;
115329f1 644 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
645 &th->interleaved_max, &p);
646 }
647 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
648 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
649 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
650 } else if (!strcmp(parameter, "ttl")) {
651 if (*p == '=') {
652 p++;
653 th->ttl = strtol(p, (char **)&p, 10);
654 }
655 } else if (!strcmp(parameter, "destination")) {
656 struct in_addr ipaddr;
657
658 if (*p == '=') {
659 p++;
660 get_word_sep(buf, sizeof(buf), ";,", &p);
115329f1 661 if (inet_aton(buf, &ipaddr))
1617ad97
FB
662 th->destination = ntohl(ipaddr.s_addr);
663 }
664 }
665 while (*p != ';' && *p != '\0' && *p != ',')
666 p++;
667 if (*p == ';')
668 p++;
669 }
670 if (*p == ',')
671 p++;
672
673 reply->nb_transports++;
674 }
675}
676
a9e534d5 677void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
678{
679 const char *p;
680
681 /* NOTE: we do case independent match for broken servers */
682 p = buf;
f7d78f36 683 if (av_stristart(p, "Session:", &p)) {
30e79845 684 int t;
1617ad97 685 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
686 if (av_stristart(p, ";timeout=", &p) &&
687 (t = strtol(p, NULL, 10)) > 0) {
688 reply->timeout = t;
689 }
f7d78f36 690 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 691 reply->content_length = strtol(p, NULL, 10);
f7d78f36 692 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 693 rtsp_parse_transport(reply, p);
f7d78f36 694 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 695 reply->seq = strtol(p, NULL, 10);
f7d78f36 696 } else if (av_stristart(p, "Range:", &p)) {
31693e00 697 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
698 } else if (av_stristart(p, "RealChallenge1:", &p)) {
699 skip_spaces(&p);
700 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
701 } else if (av_stristart(p, "Server:", &p)) {
702 skip_spaces(&p);
703 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
704 } else if (av_stristart(p, "Notice:", &p) ||
705 av_stristart(p, "X-Notice:", &p)) {
706 reply->notice = strtol(p, NULL, 10);
d243ba30
LB
707 } else if (av_stristart(p, "Location:", &p)) {
708 skip_spaces(&p);
709 av_strlcpy(reply->location, p , sizeof(reply->location));
1617ad97
FB
710 }
711}
712
b7b8fc34
FB
713/* skip a RTP/TCP interleaved packet */
714static void rtsp_skip_packet(AVFormatContext *s)
715{
716 RTSPState *rt = s->priv_data;
717 int ret, len, len1;
718 uint8_t buf[1024];
719
0e848977 720 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
721 if (ret != 3)
722 return;
80fb8234 723 len = AV_RB16(buf + 1);
67c9cd69
BC
724
725 dprintf(s, "skipping RTP packet len=%d\n", len);
726
b7b8fc34
FB
727 /* skip payload */
728 while (len > 0) {
729 len1 = len;
730 if (len1 > sizeof(buf))
731 len1 = sizeof(buf);
0e848977 732 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
733 if (ret != len1)
734 return;
735 len -= len1;
736 }
737}
1617ad97 738
7e726132
RB
739/**
740 * Read a RTSP message from the server, or prepare to read data
741 * packets if we're reading data interleaved over the TCP/RTSP
742 * connection as well.
743 *
744 * @param s RTSP demuxer context
745 * @param reply pointer where the RTSP message header will be stored
746 * @param content_ptr pointer where the RTSP message body, if any, will
747 * be stored (length is in \p reply)
748 * @param return_on_interleaved_data whether the function may return if we
749 * encounter a data marker ('$'), which precedes data
750 * packets over interleaved TCP/RTSP connections. If this
751 * is set, this function will return 1 after encountering
752 * a '$'. If it is not set, the function will skip any
753 * data packets (if they are encountered), until a reply
754 * has been fully parsed. If no more data is available
755 * without parsing a reply, it will return an error.
756 *
757 * @returns 1 if a data packets is ready to be received, -1 on error,
758 * and 0 on success.
759 */
760static int
29b9f58b 761rtsp_read_reply (AVFormatContext *s, RTSPMessageHeader *reply,
7e726132 762 unsigned char **content_ptr, int return_on_interleaved_data)
1617ad97
FB
763{
764 RTSPState *rt = s->priv_data;
765 char buf[4096], buf1[1024], *q;
766 unsigned char ch;
767 const char *p;
7e726132 768 int ret, content_length, line_count = 0;
1617ad97
FB
769 unsigned char *content = NULL;
770
d541a7d2 771 memset(reply, 0, sizeof(*reply));
1617ad97 772
1617ad97 773 /* parse reply (XXX: use buffers) */
1617ad97
FB
774 rt->last_reply[0] = '\0';
775 for(;;) {
776 q = buf;
777 for(;;) {
0e848977 778 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 779#ifdef DEBUG_RTP_TCP
67c9cd69 780 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
781#endif
782 if (ret != 1)
783 return -1;
1617ad97
FB
784 if (ch == '\n')
785 break;
b7b8fc34
FB
786 if (ch == '$') {
787 /* XXX: only parse it if first char on line ? */
7e726132
RB
788 if (return_on_interleaved_data) {
789 return 1;
790 } else
b7b8fc34
FB
791 rtsp_skip_packet(s);
792 } else if (ch != '\r') {
1617ad97
FB
793 if ((q - buf) < sizeof(buf) - 1)
794 *q++ = ch;
795 }
796 }
797 *q = '\0';
67c9cd69
BC
798
799 dprintf(s, "line='%s'\n", buf);
800
1617ad97
FB
801 /* test if last line */
802 if (buf[0] == '\0')
803 break;
804 p = buf;
805 if (line_count == 0) {
806 /* get reply code */
807 get_word(buf1, sizeof(buf1), &p);
808 get_word(buf1, sizeof(buf1), &p);
809 reply->status_code = atoi(buf1);
810 } else {
811 rtsp_parse_line(reply, p);
75e61b0e
MR
812 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
813 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
814 }
815 line_count++;
816 }
115329f1 817
1617ad97 818 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 819 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 820
1617ad97
FB
821 content_length = reply->content_length;
822 if (content_length > 0) {
823 /* leave some room for a trailing '\0' (useful for simple parsing) */
824 content = av_malloc(content_length + 1);
0e848977 825 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
826 content[content_length] = '\0';
827 }
828 if (content_ptr)
829 *content_ptr = content;
e2e2e7dd
AB
830 else
831 av_free(content);
7e726132 832
fccb1770
RB
833 /* EOS */
834 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
835 reply->notice == 2104 /* Start-of-Stream Reached */ ||
836 reply->notice == 2306 /* Continuous Feed Terminated */)
837 rt->state = RTSP_STATE_IDLE;
838 else if (reply->notice >= 4400 && reply->notice < 5500)
839 return AVERROR(EIO); /* data or server error */
840 else if (reply->notice == 2401 /* Ticket Expired */ ||
841 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
842 return AVERROR(EPERM);
843
7e726132 844 return 0;
1617ad97
FB
845}
846
30e79845 847static void rtsp_send_cmd_async (AVFormatContext *s,
29b9f58b
RB
848 const char *cmd, RTSPMessageHeader *reply,
849 unsigned char **content_ptr)
850{
851 RTSPState *rt = s->priv_data;
852 char buf[4096], buf1[1024];
853
854 rt->seq++;
855 av_strlcpy(buf, cmd, sizeof(buf));
856 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
857 av_strlcat(buf, buf1, sizeof(buf));
858 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
859 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
860 av_strlcat(buf, buf1, sizeof(buf));
861 }
f9337897
RB
862 if (rt->auth_b64)
863 av_strlcatf(buf, sizeof(buf),
ba93ea6d
RB
864 "Authorization: Basic %s\r\n",
865 rt->auth_b64);
29b9f58b 866 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69
BC
867
868 dprintf(s, "Sending:\n%s--\n", buf);
869
29b9f58b 870 url_write(rt->rtsp_hd, buf, strlen(buf));
30e79845
RB
871 rt->last_cmd_time = av_gettime();
872}
873
874static void rtsp_send_cmd (AVFormatContext *s,
875 const char *cmd, RTSPMessageHeader *reply,
876 unsigned char **content_ptr)
877{
878 rtsp_send_cmd_async(s, cmd, reply, content_ptr);
29b9f58b 879
7e726132 880 rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
881}
882
1617ad97 883
8b1ab7bf
FB
884/* close and free RTSP streams */
885static void rtsp_close_streams(RTSPState *rt)
886{
887 int i;
888 RTSPStream *rtsp_st;
889
890 for(i=0;i<rt->nb_rtsp_streams;i++) {
891 rtsp_st = rt->rtsp_streams[i];
892 if (rtsp_st) {
0a861b6f 893 if (rtsp_st->transport_priv) {
accc248f 894 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 895 ff_rdt_parse_close(rtsp_st->transport_priv);
accc248f 896 else
0a861b6f 897 rtp_parse_close(rtsp_st->transport_priv);
accc248f 898 }
8b1ab7bf
FB
899 if (rtsp_st->rtp_handle)
900 url_close(rtsp_st->rtp_handle);
4934884a
RM
901 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
902 rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
8b1ab7bf 903 }
8b1ab7bf
FB
904 }
905 av_free(rt->rtsp_streams);
1a30d541
RB
906 if (rt->asf_ctx) {
907 av_close_input_stream (rt->asf_ctx);
908 rt->asf_ctx = NULL;
909 }
f9337897 910 av_freep(&rt->auth_b64);
8b1ab7bf
FB
911}
912
ee0cb67f
RB
913static int
914rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
915{
accc248f 916 RTSPState *rt = s->priv_data;
ee0cb67f
RB
917 AVStream *st = NULL;
918
a6789dca
RB
919 /* open the RTP context */
920 if (rtsp_st->stream_index >= 0)
921 st = s->streams[rtsp_st->stream_index];
922 if (!st)
923 s->ctx_flags |= AVFMTCTX_NOHEADER;
accc248f
RB
924
925 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 926 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
accc248f
RB
927 rtsp_st->dynamic_protocol_context,
928 rtsp_st->dynamic_handler);
929 else
0a861b6f 930 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
5c918b27
RB
931 rtsp_st->sdp_payload_type,
932 &rtsp_st->rtp_payload_data);
a6789dca 933
0a861b6f 934 if (!rtsp_st->transport_priv) {
a6789dca 935 return AVERROR(ENOMEM);
accc248f 936 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
a6789dca 937 if(rtsp_st->dynamic_handler) {
0a861b6f 938 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
99a1d191
RB
939 rtsp_st->dynamic_protocol_context,
940 rtsp_st->dynamic_handler);
ee0cb67f 941 }
a6789dca 942 }
ee0cb67f
RB
943
944 return 0;
945}
946
53620bba
RB
947/**
948 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
949 */
950static int
e9dea59f 951make_setup_request (AVFormatContext *s, const char *host, int port,
90abbdba 952 int lower_transport, const char *real_challenge)
1617ad97
FB
953{
954 RTSPState *rt = s->priv_data;
f830c9a4 955 int rtx, j, i, err, interleave = 0;
1617ad97 956 RTSPStream *rtsp_st;
a9e534d5 957 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 958 char cmd[2048];
e9dea59f
RB
959 const char *trans_pref;
960
119b4668 961 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
962 trans_pref = "x-pn-tng";
963 else
964 trans_pref = "RTP/AVP";
115329f1 965
30e79845
RB
966 /* default timeout: 1 minute */
967 rt->timeout = 60;
968
1617ad97
FB
969 /* for each stream, make the setup request */
970 /* XXX: we assume the same server is used for the control of each
971 RTSP stream */
d1ccf0e0
RD
972
973 for(j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
974 char transport[2048];
975
f830c9a4
RB
976 /**
977 * WMS serves all UDP data over a single connection, the RTX, which
978 * isn't necessarily the first in the SDP but has to be the first
979 * to be set up, else the second/third SETUP will fail with a 461.
980 */
981 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
982 rt->server_type == RTSP_SERVER_WMS) {
983 if (i == 0) {
984 /* rtx first */
985 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
986 int len = strlen(rt->rtsp_streams[rtx]->control_url);
987 if (len >= 4 &&
988 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, "/rtx"))
989 break;
990 }
991 if (rtx == rt->nb_rtsp_streams)
992 return -1; /* no RTX found */
993 rtsp_st = rt->rtsp_streams[rtx];
994 } else
995 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
996 } else
2fea9650 997 rtsp_st = rt->rtsp_streams[i];
1617ad97 998
1617ad97 999 /* RTP/UDP */
90abbdba 1000 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1001 char buf[256];
85fb7b34 1002
f830c9a4
RB
1003 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1004 port = reply->transports[0].client_port_min;
1005 goto have_port;
1006 }
1007
85fb7b34 1008 /* first try in specified port range */
d1ccf0e0
RD
1009 if (RTSP_RTP_PORT_MIN != 0) {
1010 while(j <= RTSP_RTP_PORT_MAX) {
b316aa1a 1011 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d", host, j);
ecdcbbf6 1012 j += 2; /* we will use two port by rtp stream (rtp and rtcp) */
dbf30963 1013 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) {
85fb7b34 1014 goto rtp_opened;
d1ccf0e0 1015 }
85fb7b34 1016 }
1617ad97 1017 }
85fb7b34 1018
d1ccf0e0
RD
1019/* then try on any port
1020** if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1021** err = AVERROR_INVALIDDATA;
1022** goto fail;
1023** }
1024*/
85fb7b34
FB
1025
1026 rtp_opened:
8b1ab7bf 1027 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1028 have_port:
0ad306bc 1029 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1030 "%s/UDP;", trans_pref);
1031 if (rt->server_type != RTSP_SERVER_REAL)
1032 av_strlcat(transport, "unicast;", sizeof(transport));
1033 av_strlcatf(transport, sizeof(transport),
1034 "client_port=%d", port);
f830c9a4
RB
1035 if (rt->transport == RTSP_TRANSPORT_RTP &&
1036 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1037 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1038 }
1039
1040 /* RTP/TCP */
90abbdba 1041 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1042 /** For WMS streams, the application streams are only used for
1043 * UDP. When trying to set it up for TCP streams, the server
1044 * will return an error. Therefore, we skip those streams. */
1045 if (rt->server_type == RTSP_SERVER_WMS &&
1046 s->streams[rtsp_st->stream_index]->codec->codec_type == CODEC_TYPE_DATA)
1047 continue;
0ad306bc 1048 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1049 "%s/TCP;", trans_pref);
1050 if (rt->server_type == RTSP_SERVER_WMS)
1051 av_strlcat(transport, "unicast;", sizeof(transport));
1052 av_strlcatf(transport, sizeof(transport),
1053 "interleaved=%d-%d",
1054 interleave, interleave + 1);
1055 interleave += 2;
1617ad97
FB
1056 }
1057
90abbdba 1058 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1059 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1060 "%s/UDP;multicast", trans_pref);
1617ad97 1061 }
d1c6e47c
RB
1062 if (rt->server_type == RTSP_SERVER_REAL ||
1063 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1064 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1065 snprintf(cmd, sizeof(cmd),
b6892136
FB
1066 "SETUP %s RTSP/1.0\r\n"
1067 "Transport: %s\r\n",
1617ad97 1068 rtsp_st->control_url, transport);
2e889ae4 1069 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1070 char real_res[41], real_csum[9];
1071 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1072 real_challenge);
1073 av_strlcatf(cmd, sizeof(cmd),
1074 "If-Match: %s\r\n"
1075 "RealChallenge2: %s, sd=%s\r\n",
1076 rt->session_id, real_res, real_csum);
1077 }
1617ad97 1078 rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1079 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1080 err = 1;
1081 goto fail;
7e6ca34f
RB
1082 } else if (reply->status_code != RTSP_STATUS_OK ||
1083 reply->nb_transports != 1) {
1617ad97
FB
1084 err = AVERROR_INVALIDDATA;
1085 goto fail;
1086 }
1087
1088 /* XXX: same protocol for all streams is required */
1089 if (i > 0) {
119b4668
RB
1090 if (reply->transports[0].lower_transport != rt->lower_transport ||
1091 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1092 err = AVERROR_INVALIDDATA;
1093 goto fail;
1094 }
1095 } else {
90abbdba 1096 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1097 rt->transport = reply->transports[0].transport;
1617ad97
FB
1098 }
1099
1100 /* close RTP connection if not choosen */
90abbdba
RB
1101 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1102 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1103 url_close(rtsp_st->rtp_handle);
1104 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1105 }
1106
90abbdba
RB
1107 switch(reply->transports[0].lower_transport) {
1108 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1109 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1110 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1111 break;
115329f1 1112
90abbdba 1113 case RTSP_LOWER_TRANSPORT_UDP:
1617ad97
FB
1114 {
1115 char url[1024];
115329f1 1116
1617ad97 1117 /* XXX: also use address if specified */
115329f1 1118 snprintf(url, sizeof(url), "rtp://%s:%d",
1617ad97 1119 host, reply->transports[0].server_port_min);
f830c9a4
RB
1120 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1121 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1617ad97
FB
1122 err = AVERROR_INVALIDDATA;
1123 goto fail;
1124 }
1125 }
1126 break;
90abbdba 1127 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1617ad97
FB
1128 {
1129 char url[1024];
d02678ec 1130 struct in_addr in;
224b4495
LB
1131 int port, ttl;
1132
1133 if (reply->transports[0].destination) {
1134 in.s_addr = htonl(reply->transports[0].destination);
1135 port = reply->transports[0].port_min;
1136 ttl = reply->transports[0].ttl;
1137 } else {
1138 in = rtsp_st->sdp_ip;
1139 port = rtsp_st->sdp_port;
1140 ttl = rtsp_st->sdp_ttl;
1141 }
35b74c3d 1142 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
224b4495 1143 inet_ntoa(in), port, ttl);
dbf30963 1144 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1617ad97
FB
1145 err = AVERROR_INVALIDDATA;
1146 goto fail;
1147 }
1148 }
1149 break;
1150 }
d1ccf0e0 1151
ee0cb67f 1152 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1153 goto fail;
1617ad97
FB
1154 }
1155
30e79845
RB
1156 if (reply->timeout > 0)
1157 rt->timeout = reply->timeout;
1158
2e889ae4 1159 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1160 rt->need_subscription = 1;
1161
53620bba
RB
1162 return 0;
1163
1164fail:
8a8754d8
RB
1165 for (i=0; i<rt->nb_rtsp_streams; i++) {
1166 if (rt->rtsp_streams[i]->rtp_handle) {
1167 url_close(rt->rtsp_streams[i]->rtp_handle);
1168 rt->rtsp_streams[i]->rtp_handle = NULL;
1169 }
1170 }
53620bba
RB
1171 return err;
1172}
1173
1174static int rtsp_read_header(AVFormatContext *s,
1175 AVFormatParameters *ap)
1176{
1177 RTSPState *rt = s->priv_data;
921da217
LB
1178 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1179 char *option_list, *option, *filename;
53620bba
RB
1180 URLContext *rtsp_hd;
1181 int port, ret, err;
a9e534d5 1182 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1183 unsigned char *content = NULL;
90abbdba 1184 int lower_transport_mask = 0;
1cf151e9 1185 char real_challenge[64];
d243ba30 1186 redirect:
53620bba 1187 /* extract hostname and port */
f9337897 1188 url_split(NULL, 0, auth, sizeof(auth),
53620bba 1189 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897
RB
1190 if (*auth) {
1191 int auth_len = strlen(auth), b64_len = ((auth_len + 2) / 3) * 4 + 1;
1192
1193 if (!(rt->auth_b64 = av_malloc(b64_len)))
1194 return AVERROR(ENOMEM);
1195 if (!av_base64_encode(rt->auth_b64, b64_len, auth, auth_len)) {
1196 err = AVERROR(EINVAL);
1197 goto fail;
1198 }
1199 }
53620bba
RB
1200 if (port < 0)
1201 port = RTSP_DEFAULT_PORT;
1202
1203 /* search for options */
1204 option_list = strchr(path, '?');
1205 if (option_list) {
921da217 1206 filename = strchr(s->filename, '?');
53620bba
RB
1207 while(option_list) {
1208 /* move the option pointer */
921da217 1209 option = ++option_list;
53620bba
RB
1210 option_list = strchr(option_list, '&');
1211 if (option_list)
921da217
LB
1212 *option_list = 0;
1213
53620bba
RB
1214 /* handle the options */
1215 if (strcmp(option, "udp") == 0)
90abbdba 1216 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
53620bba 1217 else if (strcmp(option, "multicast") == 0)
90abbdba 1218 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
53620bba 1219 else if (strcmp(option, "tcp") == 0)
90abbdba 1220 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
921da217
LB
1221 else {
1222 strcpy(++filename, option);
1223 filename += strlen(option);
1224 if (option_list) *filename = '&';
1225 }
53620bba 1226 }
921da217 1227 *filename = 0;
53620bba
RB
1228 }
1229
90abbdba 1230 if (!lower_transport_mask)
2a1d51c5 1231 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba
RB
1232
1233 /* open the tcp connexion */
1234 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
f9337897
RB
1235 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) {
1236 err = AVERROR(EIO);
1237 goto fail;
1238 }
53620bba
RB
1239 rt->rtsp_hd = rtsp_hd;
1240 rt->seq = 0;
1241
1cf151e9
RB
1242 /* request options supported by the server; this also detects server type */
1243 for (rt->server_type = RTSP_SERVER_RTP;;) {
1244 snprintf(cmd, sizeof(cmd),
1245 "OPTIONS %s RTSP/1.0\r\n", s->filename);
2e889ae4 1246 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1247 av_strlcat(cmd,
1248 /**
1249 * The following entries are required for proper
1250 * streaming from a Realmedia server. They are
1251 * interdependent in some way although we currently
1252 * don't quite understand how. Values were copied
1253 * from mplayer SVN r23589.
1254 * @param CompanyID is a 16-byte ID in base64
1255 * @param ClientChallenge is a 16-byte ID in hex
1256 */
1257 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1258 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1259 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1260 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1261 sizeof(cmd));
1262 rtsp_send_cmd(s, cmd, reply, NULL);
1263 if (reply->status_code != RTSP_STATUS_OK) {
1264 err = AVERROR_INVALIDDATA;
1265 goto fail;
1266 }
1267
1268 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1269 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1270 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1271 continue;
7a86bafa
RB
1272 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1273 rt->server_type = RTSP_SERVER_WMS;
2e889ae4 1274 } else if (rt->server_type == RTSP_SERVER_REAL) {
1cf151e9
RB
1275 strcpy(real_challenge, reply->real_challenge);
1276 }
1277 break;
1278 }
1279
53620bba
RB
1280 /* describe the stream */
1281 snprintf(cmd, sizeof(cmd),
1282 "DESCRIBE %s RTSP/1.0\r\n"
1283 "Accept: application/sdp\r\n",
1284 s->filename);
2e889ae4 1285 if (rt->server_type == RTSP_SERVER_REAL) {
897ade1b
RB
1286 /**
1287 * The Require: attribute is needed for proper streaming from
1288 * Realmedia servers.
1289 */
1290 av_strlcat(cmd,
1291 "Require: com.real.retain-entity-for-setup\r\n",
1292 sizeof(cmd));
1293 }
53620bba
RB
1294 rtsp_send_cmd(s, cmd, reply, &content);
1295 if (!content) {
1296 err = AVERROR_INVALIDDATA;
1297 goto fail;
1298 }
1299 if (reply->status_code != RTSP_STATUS_OK) {
1300 err = AVERROR_INVALIDDATA;
1301 goto fail;
1302 }
1303
1304 /* now we got the SDP description, we parse it */
1305 ret = sdp_parse(s, (const char *)content);
1306 av_freep(&content);
1307 if (ret < 0) {
1308 err = AVERROR_INVALIDDATA;
1309 goto fail;
1310 }
1311
8a8754d8 1312 do {
90abbdba 1313 int lower_transport = ff_log2_tab[lower_transport_mask & ~(lower_transport_mask - 1)];
8a8754d8 1314
90abbdba 1315 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1316 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1317 real_challenge : NULL);
8a8754d8 1318 if (err < 0)
7e6ca34f 1319 goto fail;
90abbdba
RB
1320 lower_transport_mask &= ~(1 << lower_transport);
1321 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1322 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1323 goto fail;
1324 }
1325 } while (err);
53620bba 1326
ff762d6e
FB
1327 rt->state = RTSP_STATE_IDLE;
1328 rt->seek_timestamp = 0; /* default is to start stream at position
1329 zero */
c04c3282 1330 if (ap->initial_pause) {
ff762d6e
FB
1331 /* do not start immediately */
1332 } else {
1333 if (rtsp_read_play(s) < 0) {
1334 err = AVERROR_INVALIDDATA;
1617ad97
FB
1335 goto fail;
1336 }
1337 }
1617ad97
FB
1338 return 0;
1339 fail:
8b1ab7bf 1340 rtsp_close_streams(rt);
1617ad97
FB
1341 av_freep(&content);
1342 url_close(rt->rtsp_hd);
d243ba30
LB
1343 if (reply->status_code >=300 && reply->status_code < 400) {
1344 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1345 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1346 reply->status_code,
1347 s->filename);
1348 goto redirect;
1349 }
1617ad97
FB
1350 return err;
1351}
1352
8b1ab7bf
FB
1353static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1354 uint8_t *buf, int buf_size)
1617ad97
FB
1355{
1356 RTSPState *rt = s->priv_data;
b6892136 1357 int id, len, i, ret;
1617ad97 1358 RTSPStream *rtsp_st;
1617ad97 1359
b6892136 1360#ifdef DEBUG_RTP_TCP
67c9cd69 1361 dprintf(s, "tcp_read_packet:\n");
b6892136 1362#endif
1617ad97
FB
1363 redo:
1364 for(;;) {
7e726132
RB
1365 RTSPMessageHeader reply;
1366
1367 ret = rtsp_read_reply(s, &reply, NULL, 1);
1368 if (ret == -1)
8b1ab7bf 1369 return -1;
7e726132 1370 if (ret == 1) /* received '$' */
1617ad97 1371 break;
7e726132 1372 /* XXX: parse message */
fccb1770
RB
1373 if (rt->state != RTSP_STATE_PLAYING)
1374 return 0;
1617ad97 1375 }
0e848977 1376 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1377 if (ret != 3)
8b1ab7bf 1378 return -1;
b6892136 1379 id = buf[0];
80fb8234 1380 len = AV_RB16(buf + 1);
b6892136 1381#ifdef DEBUG_RTP_TCP
67c9cd69 1382 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1383#endif
8b1ab7bf 1384 if (len > buf_size || len < 12)
1617ad97
FB
1385 goto redo;
1386 /* get the data */
0e848977 1387 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1388 if (ret != len)
8b1ab7bf 1389 return -1;
985b05d3 1390 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1391 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1392 return -1;
115329f1 1393
1617ad97 1394 /* find the matching stream */
8b1ab7bf
FB
1395 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1396 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1397 if (id >= rtsp_st->interleaved_min &&
1398 id <= rtsp_st->interleaved_max)
1617ad97
FB
1399 goto found;
1400 }
1401 goto redo;
1402 found:
8b1ab7bf
FB
1403 *prtsp_st = rtsp_st;
1404 return len;
1617ad97
FB
1405}
1406
115329f1 1407static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
8b1ab7bf 1408 uint8_t *buf, int buf_size)
1617ad97 1409{
8b1ab7bf 1410 RTSPState *rt = s->priv_data;
1617ad97
FB
1411 RTSPStream *rtsp_st;
1412 fd_set rfds;
7e726132 1413 int fd, fd_max, n, i, ret, tcp_fd;
1617ad97
FB
1414 struct timeval tv;
1415
1416 for(;;) {
b7b8fc34 1417 if (url_interrupt_cb())
a960a1e0 1418 return AVERROR(EINTR);
1617ad97 1419 FD_ZERO(&rfds);
46ff7a5f
LA
1420 if (rt->rtsp_hd) {
1421 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1422 FD_SET(tcp_fd, &rfds);
1423 } else {
1424 fd_max = 0;
1425 tcp_fd = -1;
1426 }
8b1ab7bf
FB
1427 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1428 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1429 if (rtsp_st->rtp_handle) {
2fea9650
RB
1430 /* currently, we cannot probe RTCP handle because of
1431 * blocking restrictions */
bc8763cd
RB
1432 fd = url_get_file_handle(rtsp_st->rtp_handle);
1433 if (fd > fd_max)
1434 fd_max = fd;
1435 FD_SET(fd, &rfds);
f830c9a4 1436 }
1617ad97 1437 }
1617ad97 1438 tv.tv_sec = 0;
b7b8fc34 1439 tv.tv_usec = 100 * 1000;
1617ad97
FB
1440 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1441 if (n > 0) {
8b1ab7bf
FB
1442 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1443 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1444 if (rtsp_st->rtp_handle) {
bc8763cd
RB
1445 fd = url_get_file_handle(rtsp_st->rtp_handle);
1446 if (FD_ISSET(fd, &rfds)) {
2fea9650
RB
1447 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1448 if (ret > 0) {
1449 *prtsp_st = rtsp_st;
1450 return ret;
1451 }
1617ad97
FB
1452 }
1453 }
1454 }
7e726132
RB
1455 if (FD_ISSET(tcp_fd, &rfds)) {
1456 RTSPMessageHeader reply;
1457
1458 rtsp_read_reply(s, &reply, NULL, 0);
1459 /* XXX: parse message */
fccb1770
RB
1460 if (rt->state != RTSP_STATE_PLAYING)
1461 return 0;
7e726132 1462 }
1617ad97
FB
1463 }
1464 }
1465}
1466
1467static int rtsp_read_packet(AVFormatContext *s,
1468 AVPacket *pkt)
1469{
1470 RTSPState *rt = s->priv_data;
8b1ab7bf
FB
1471 RTSPStream *rtsp_st;
1472 int ret, len;
e49906c3 1473 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
30e79845
RB
1474 RTSPMessageHeader reply1, *reply = &reply1;
1475 char cmd[1024];
8b1ab7bf 1476
572c6a38 1477 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1478 int i;
572c6a38 1479 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1480
572c6a38
RB
1481 for (i = 0; i < s->nb_streams; i++)
1482 cache[i] = s->streams[i]->discard;
1483
1484 if (!rt->need_subscription) {
1485 if (memcmp (cache, rt->real_setup_cache,
1486 sizeof(enum AVDiscard) * s->nb_streams)) {
1487 av_strlcatf(cmd, sizeof(cmd),
1488 "SET_PARAMETER %s RTSP/1.0\r\n"
1489 "Unsubscribe: %s\r\n",
1490 s->filename, rt->last_subscription);
1491 rtsp_send_cmd(s, cmd, reply, NULL);
1492 if (reply->status_code != RTSP_STATUS_OK)
1493 return AVERROR_INVALIDDATA;
1494 rt->need_subscription = 1;
1495 }
1256d16b 1496 }
1256d16b 1497
572c6a38
RB
1498 if (rt->need_subscription) {
1499 int r, rule_nr, first = 1;
1500
1501 memcpy(rt->real_setup_cache, cache,
1502 sizeof(enum AVDiscard) * s->nb_streams);
1503 rt->last_subscription[0] = 0;
1504
1505 snprintf(cmd, sizeof(cmd),
1506 "SET_PARAMETER %s RTSP/1.0\r\n"
1507 "Subscribe: ",
1508 s->filename);
1509 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1510 rule_nr = 0;
1511 for (r = 0; r < s->nb_streams; r++) {
1512 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1513 if (s->streams[r]->discard != AVDISCARD_ALL) {
1514 if (!first)
1515 av_strlcat(rt->last_subscription, ",",
1516 sizeof(rt->last_subscription));
1517 ff_rdt_subscribe_rule(
1518 rt->last_subscription,
1519 sizeof(rt->last_subscription), i, rule_nr);
1520 first = 0;
1521 }
1522 rule_nr++;
1523 }
1524 }
1525 }
1526 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1527 rtsp_send_cmd(s, cmd, reply, NULL);
1528 if (reply->status_code != RTSP_STATUS_OK)
1529 return AVERROR_INVALIDDATA;
1530 rt->need_subscription = 0;
1531
1532 if (rt->state == RTSP_STATE_PLAYING)
1533 rtsp_read_play (s);
1534 }
1256d16b
RB
1535 }
1536
8b1ab7bf 1537 /* get next frames from the same RTP packet */
0a861b6f 1538 if (rt->cur_transport_priv) {
119b4668 1539 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1540 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
4fce284c 1541 else
0a861b6f 1542 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
8b1ab7bf 1543 if (ret == 0) {
0a861b6f 1544 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1545 return 0;
1546 } else if (ret == 1) {
1547 return 0;
1548 } else {
0a861b6f 1549 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1550 }
1551 }
1617ad97 1552
8b1ab7bf
FB
1553 /* read next RTP packet */
1554 redo:
90abbdba 1555 switch(rt->lower_transport) {
1617ad97 1556 default:
90abbdba 1557 case RTSP_LOWER_TRANSPORT_TCP:
8b1ab7bf 1558 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1617ad97 1559 break;
90abbdba
RB
1560 case RTSP_LOWER_TRANSPORT_UDP:
1561 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
8b1ab7bf 1562 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
0a861b6f
RB
1563 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1564 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1617ad97
FB
1565 break;
1566 }
8b1ab7bf 1567 if (len < 0)
489b0d4d 1568 return len;
fccb1770
RB
1569 if (len == 0)
1570 return AVERROR_EOF;
119b4668 1571 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1572 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
4fce284c 1573 else
0a861b6f 1574 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
8b1ab7bf
FB
1575 if (ret < 0)
1576 goto redo;
1577 if (ret == 1) {
1578 /* more packets may follow, so we save the RTP context */
0a861b6f 1579 rt->cur_transport_priv = rtsp_st->transport_priv;
8b1ab7bf 1580 }
30e79845
RB
1581
1582 /* send dummy request to keep TCP connection alive */
1583 if ((rt->server_type == RTSP_SERVER_WMS ||
1584 rt->server_type == RTSP_SERVER_REAL) &&
1585 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1586 if (rt->server_type == RTSP_SERVER_WMS) {
1587 snprintf(cmd, sizeof(cmd) - 1,
1588 "GET_PARAMETER %s RTSP/1.0\r\n",
1589 s->filename);
1590 rtsp_send_cmd_async(s, cmd, reply, NULL);
1591 } else {
1592 rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n",
1593 reply, NULL);
1594 }
1595 }
1596
8b1ab7bf 1597 return 0;
1617ad97
FB
1598}
1599
ff762d6e 1600static int rtsp_read_play(AVFormatContext *s)
b7b8fc34 1601{
ff762d6e 1602 RTSPState *rt = s->priv_data;
a9e534d5 1603 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1604 char cmd[1024];
1605
bc874dae 1606 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
ff762d6e 1607
2e889ae4 1608 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1609 if (rt->state == RTSP_STATE_PAUSED) {
1610 snprintf(cmd, sizeof(cmd),
1611 "PLAY %s RTSP/1.0\r\n",
1612 s->filename);
1613 } else {
1614 snprintf(cmd, sizeof(cmd),
1615 "PLAY %s RTSP/1.0\r\n"
1616 "Range: npt=%0.3f-\r\n",
1617 s->filename,
1618 (double)rt->seek_timestamp / AV_TIME_BASE);
1619 }
1620 rtsp_send_cmd(s, cmd, reply, NULL);
1621 if (reply->status_code != RTSP_STATUS_OK) {
1622 return -1;
1623 }
1256d16b 1624 }
5f86057f
RB
1625 rt->state = RTSP_STATE_PLAYING;
1626 return 0;
b7b8fc34
FB
1627}
1628
ff762d6e
FB
1629/* pause the stream */
1630static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1631{
ff762d6e 1632 RTSPState *rt = s->priv_data;
a9e534d5 1633 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1634 char cmd[1024];
1635
b7b8fc34 1636 rt = s->priv_data;
115329f1 1637
ff762d6e
FB
1638 if (rt->state != RTSP_STATE_PLAYING)
1639 return 0;
2e889ae4 1640 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1641 snprintf(cmd, sizeof(cmd),
1642 "PAUSE %s RTSP/1.0\r\n",
1643 s->filename);
1644 rtsp_send_cmd(s, cmd, reply, NULL);
1645 if (reply->status_code != RTSP_STATUS_OK) {
1646 return -1;
1647 }
1256d16b 1648 }
5f86057f
RB
1649 rt->state = RTSP_STATE_PAUSED;
1650 return 0;
b7b8fc34
FB
1651}
1652
115329f1 1653static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1654 int64_t timestamp, int flags)
ff762d6e
FB
1655{
1656 RTSPState *rt = s->priv_data;
115329f1 1657
50755217 1658 rt->seek_timestamp = av_rescale_q(timestamp, s->streams[stream_index]->time_base, AV_TIME_BASE_Q);
ff762d6e
FB
1659 switch(rt->state) {
1660 default:
1661 case RTSP_STATE_IDLE:
1662 break;
1663 case RTSP_STATE_PLAYING:
ec606b36
LB
1664 if (rtsp_read_pause(s) != 0)
1665 return -1;
1666 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1667 if (rtsp_read_play(s) != 0)
1668 return -1;
1669 break;
1670 case RTSP_STATE_PAUSED:
1671 rt->state = RTSP_STATE_IDLE;
1672 break;
1673 }
1674 return 0;
1675}
1676
1617ad97
FB
1677static int rtsp_read_close(AVFormatContext *s)
1678{
1679 RTSPState *rt = s->priv_data;
a9e534d5 1680 RTSPMessageHeader reply1, *reply = &reply1;
1617ad97
FB
1681 char cmd[1024];
1682
b6892136 1683#if 0
1617ad97 1684 /* NOTE: it is valid to flush the buffer here */
90abbdba 1685 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1686 url_fclose(&rt->rtsp_gb);
1687 }
b6892136 1688#endif
115329f1 1689 snprintf(cmd, sizeof(cmd),
b6892136 1690 "TEARDOWN %s RTSP/1.0\r\n",
1617ad97
FB
1691 s->filename);
1692 rtsp_send_cmd(s, cmd, reply, NULL);
1693
8b1ab7bf 1694 rtsp_close_streams(rt);
1617ad97
FB
1695 url_close(rt->rtsp_hd);
1696 return 0;
1697}
1698
b250f9c6 1699#if CONFIG_RTSP_DEMUXER
d2a067d1 1700AVInputFormat rtsp_demuxer = {
1617ad97 1701 "rtsp",
bde15e74 1702 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1703 sizeof(RTSPState),
1704 rtsp_probe,
1705 rtsp_read_header,
1706 rtsp_read_packet,
1707 rtsp_read_close,
ff762d6e 1708 rtsp_read_seek,
bb76a117 1709 .flags = AVFMT_NOFILE,
ff762d6e
FB
1710 .read_play = rtsp_read_play,
1711 .read_pause = rtsp_read_pause,
1617ad97 1712};
96862926 1713#endif
1617ad97 1714
cb1fdc61 1715static int sdp_probe(AVProbeData *p1)
93ced3e8 1716{
0e1ceacd 1717 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1718
1719 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1720 while (p < p_end && *p != '\0') {
f7d78f36 1721 if (p + sizeof("c=IN IP4") - 1 < p_end && av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1722 return AVPROBE_SCORE_MAX / 2;
0e1ceacd
MN
1723
1724 while(p < p_end - 1 && *p != '\n') p++;
1725 if (++p >= p_end)
cb1fdc61 1726 break;
cb1fdc61
FB
1727 if (*p == '\r')
1728 p++;
1729 }
93ced3e8
FB
1730 return 0;
1731}
1732
1733#define SDP_MAX_SIZE 8192
1734
1735static int sdp_read_header(AVFormatContext *s,
1736 AVFormatParameters *ap)
1737{
8b1ab7bf 1738 RTSPState *rt = s->priv_data;
93ced3e8
FB
1739 RTSPStream *rtsp_st;
1740 int size, i, err;
1741 char *content;
1742 char url[1024];
1743
1744 /* read the whole sdp file */
1745 /* XXX: better loading */
1746 content = av_malloc(SDP_MAX_SIZE);
899681cd 1747 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1748 if (size <= 0) {
1749 av_free(content);
1750 return AVERROR_INVALIDDATA;
1751 }
1752 content[size] ='\0';
1753
1754 sdp_parse(s, content);
1755 av_free(content);
1756
1757 /* open each RTP stream */
8b1ab7bf
FB
1758 for(i=0;i<rt->nb_rtsp_streams;i++) {
1759 rtsp_st = rt->rtsp_streams[i];
115329f1 1760
d2bf42be 1761 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
115329f1 1762 inet_ntoa(rtsp_st->sdp_ip),
93ced3e8 1763 rtsp_st->sdp_port,
d2bf42be 1764 rtsp_st->sdp_port,
93ced3e8 1765 rtsp_st->sdp_ttl);
dbf30963 1766 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1767 err = AVERROR_INVALIDDATA;
1768 goto fail;
1769 }
ee0cb67f 1770 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1771 goto fail;
93ced3e8
FB
1772 }
1773 return 0;
1774 fail:
8b1ab7bf 1775 rtsp_close_streams(rt);
93ced3e8
FB
1776 return err;
1777}
1778
1779static int sdp_read_packet(AVFormatContext *s,
1780 AVPacket *pkt)
1781{
8b1ab7bf 1782 return rtsp_read_packet(s, pkt);
93ced3e8
FB
1783}
1784
1785static int sdp_read_close(AVFormatContext *s)
1786{
8b1ab7bf
FB
1787 RTSPState *rt = s->priv_data;
1788 rtsp_close_streams(rt);
93ced3e8
FB
1789 return 0;
1790}
1791
b250f9c6 1792#if CONFIG_SDP_DEMUXER
ff70e601 1793AVInputFormat sdp_demuxer = {
93ced3e8 1794 "sdp",
bde15e74 1795 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1796 sizeof(RTSPState),
1797 sdp_probe,
1798 sdp_read_header,
1799 sdp_read_packet,
1800 sdp_read_close,
1801};
ff70e601 1802#endif