Use fewer macros in x86-optimized mlpdsp.
[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
RB
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)
93ced3e8
FB
105{
106 char buf[256];
d1ccf0e0
RD
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)) {
4934884a
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 }
d1ccf0e0
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123 break;
124 }
4934884a
RM
125 handler= handler->next;
126 }
93ced3e8 127 } else {
d1ccf0e0
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;
d0deedcb
RM
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
RD
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:
d1ccf0e0
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;
e6327fba
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;
d1ccf0e0
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;
1617ad97
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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;
1617ad97
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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
67c9cd69 342 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
343
344 p = buf;
cb760a47
RB
345 if (s1->skip_media && letter != 'm')
346 return;
1617ad97 347 switch(letter) {
93ced3e8
FB
348 case 'c':
349 get_word(buf1, sizeof(buf1), &p);
350 if (strcmp(buf1, "IN") != 0)
351 return;
352 get_word(buf1, sizeof(buf1), &p);
353 if (strcmp(buf1, "IP4") != 0)
354 return;
355 get_word_sep(buf1, sizeof(buf1), "/", &p);
356 if (inet_aton(buf1, &sdp_ip) == 0)
357 return;
358 ttl = 16;
359 if (*p == '/') {
360 p++;
361 get_word_sep(buf1, sizeof(buf1), "/", &p);
362 ttl = atoi(buf1);
363 }
364 if (s->nb_streams == 0) {
365 s1->default_ip = sdp_ip;
366 s1->default_ttl = ttl;
367 } else {
368 st = s->streams[s->nb_streams - 1];
369 rtsp_st = st->priv_data;
370 rtsp_st->sdp_ip = sdp_ip;
371 rtsp_st->sdp_ttl = ttl;
372 }
373 break;
1617ad97 374 case 's':
da61e413 375 av_metadata_set(&s->metadata, "title", p);
1617ad97
FB
376 break;
377 case 'i':
378 if (s->nb_streams == 0) {
da61e413 379 av_metadata_set(&s->metadata, "comment", p);
1617ad97
FB
380 break;
381 }
382 break;
383 case 'm':
384 /* new stream */
cb760a47 385 s1->skip_media = 0;
1617ad97
FB
386 get_word(st_type, sizeof(st_type), &p);
387 if (!strcmp(st_type, "audio")) {
388 codec_type = CODEC_TYPE_AUDIO;
389 } else if (!strcmp(st_type, "video")) {
390 codec_type = CODEC_TYPE_VIDEO;
090438cc
RB
391 } else if (!strcmp(st_type, "application")) {
392 codec_type = CODEC_TYPE_DATA;
1617ad97 393 } else {
cb760a47 394 s1->skip_media = 1;
1617ad97
FB
395 return;
396 }
1617ad97
FB
397 rtsp_st = av_mallocz(sizeof(RTSPStream));
398 if (!rtsp_st)
399 return;
8b1ab7bf
FB
400 rtsp_st->stream_index = -1;
401 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
402
403 rtsp_st->sdp_ip = s1->default_ip;
404 rtsp_st->sdp_ttl = s1->default_ttl;
405
93ced3e8
FB
406 get_word(buf1, sizeof(buf1), &p); /* port */
407 rtsp_st->sdp_port = atoi(buf1);
408
409 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 410
93ced3e8
FB
411 /* XXX: handle list of formats */
412 get_word(buf1, sizeof(buf1), &p); /* format list */
413 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 414
7ed19d7f 415 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
416 /* no corresponding stream */
417 } else {
418 st = av_new_stream(s, 0);
419 if (!st)
420 return;
421 st->priv_data = rtsp_st;
422 rtsp_st->stream_index = st->index;
01f4895c 423 st->codec->codec_type = codec_type;
d1ccf0e0 424 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 425 /* if standard payload type, we can find the codec right now */
bf6d9818 426 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
427 }
428 }
1617ad97 429 /* put a default control url */
75e61b0e 430 av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url));
1617ad97
FB
431 break;
432 case 'a':
f7d78f36 433 if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
1617ad97
FB
434 char proto[32];
435 /* get the control url */
436 st = s->streams[s->nb_streams - 1];
437 rtsp_st = st->priv_data;
115329f1 438
1617ad97 439 /* XXX: may need to add full url resolution */
6ba5cbc6 440 url_split(proto, sizeof(proto), NULL, 0, NULL, 0, NULL, NULL, 0, p);
1617ad97
FB
441 if (proto[0] == '\0') {
442 /* relative control URL */
75e61b0e
MR
443 av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url));
444 av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 445 } else {
75e61b0e 446 av_strlcpy(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 447 }
83d14c85 448 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 449 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 450 get_word(buf1, sizeof(buf1), &p);
93ced3e8 451 payload_type = atoi(buf1);
83d14c85 452 st = s->streams[s->nb_streams - 1];
ff16f551
RB
453 rtsp_st = st->priv_data;
454 sdp_parse_rtpmap(st->codec, rtsp_st, payload_type, p);
f7d78f36 455 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 456 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 457 get_word(buf1, sizeof(buf1), &p);
93ced3e8
FB
458 payload_type = atoi(buf1);
459 for(i = 0; i < s->nb_streams;i++) {
460 st = s->streams[i];
461 rtsp_st = st->priv_data;
462 if (rtsp_st->sdp_payload_type == payload_type) {
4934884a 463 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 464 if(!rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf)) {
4934884a
RM
465 sdp_parse_fmtp(st, p);
466 }
467 } else {
ed787542 468 sdp_parse_fmtp(st, p);
4934884a 469 }
93ced3e8
FB
470 }
471 }
f7d78f36 472 } else if(av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
473 // let dynamic protocol handlers have a stab at the line.
474 get_word(buf1, sizeof(buf1), &p);
475 payload_type = atoi(buf1);
476 for(i = 0; i < s->nb_streams;i++) {
477 st = s->streams[i];
478 rtsp_st = st->priv_data;
479 if (rtsp_st->sdp_payload_type == payload_type) {
480 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 481 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf);
d0deedcb
RM
482 }
483 }
484 }
f7d78f36 485 } else if(av_strstart(p, "range:", &p)) {
31693e00
RM
486 int64_t start, end;
487
488 // this is so that seeking on a streamed file can work.
489 rtsp_parse_range_npt(p, &start, &end);
490 s->start_time= start;
491 s->duration= (end==AV_NOPTS_VALUE)?AV_NOPTS_VALUE:end-start; // AV_NOPTS_VALUE means live broadcast (and can't seek)
119b4668
RB
492 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
493 if (atoi(p) == 1)
494 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
495 } else {
496 if (rt->server_type == RTSP_SERVER_WMS)
497 ff_wms_parse_sdp_a_line(s, p);
498 if (s->nb_streams > 0) {
c4a3d032
RB
499 if (rt->server_type == RTSP_SERVER_REAL)
500 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
501
502 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
503 if (rtsp_st->dynamic_handler &&
504 rtsp_st->dynamic_handler->parse_sdp_a_line)
505 rtsp_st->dynamic_handler->parse_sdp_a_line(s, s->nb_streams - 1,
506 rtsp_st->dynamic_protocol_context, buf);
1a30d541 507 }
1617ad97
FB
508 }
509 break;
510 }
511}
512
5c91a675 513static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
514{
515 const char *p;
516 int letter;
9211bcdd
RB
517 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
518 * contain long SDP lines containing complete ASF Headers (several
519 * kB) or arrays of MDPR (RM stream descriptor) headers plus
520 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
521 * buffer is large.
522 *
523 * The Vorbis FMTP line can be up to 16KB - see sdp_parse_fmtp. */
524 char buf[16384], *q;
93ced3e8 525 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 526
93ced3e8 527 memset(s1, 0, sizeof(SDPParseState));
1617ad97
FB
528 p = content;
529 for(;;) {
530 skip_spaces(&p);
531 letter = *p;
532 if (letter == '\0')
533 break;
534 p++;
535 if (*p != '=')
536 goto next_line;
537 p++;
538 /* get the content */
539 q = buf;
b6892136 540 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
541 if ((q - buf) < sizeof(buf) - 1)
542 *q++ = *p;
543 p++;
544 }
545 *q = '\0';
93ced3e8 546 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
547 next_line:
548 while (*p != '\n' && *p != '\0')
549 p++;
550 if (*p == '\n')
551 p++;
552 }
553 return 0;
554}
555
556static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
557{
558 const char *p;
559 int v;
560
561 p = *pp;
562 skip_spaces(&p);
563 v = strtol(p, (char **)&p, 10);
564 if (*p == '-') {
565 p++;
566 *min_ptr = v;
567 v = strtol(p, (char **)&p, 10);
568 *max_ptr = v;
569 } else {
570 *min_ptr = v;
571 *max_ptr = v;
572 }
573 *pp = p;
574}
575
576/* XXX: only one transport specification is parsed */
a9e534d5 577static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
578{
579 char transport_protocol[16];
580 char profile[16];
581 char lower_transport[16];
582 char parameter[16];
583 RTSPTransportField *th;
584 char buf[256];
115329f1 585
1617ad97 586 reply->nb_transports = 0;
115329f1 587
1617ad97
FB
588 for(;;) {
589 skip_spaces(&p);
590 if (*p == '\0')
591 break;
592
593 th = &reply->transports[reply->nb_transports];
594
115329f1 595 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 596 "/", &p);
e1502118 597 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
598 get_word_sep(profile, sizeof(profile), "/;,", &p);
599 lower_transport[0] = '\0';
600 /* rtp/avp/<protocol> */
601 if (*p == '/') {
7ecc634e
LB
602 get_word_sep(lower_transport, sizeof(lower_transport),
603 ";,", &p);
119b4668
RB
604 }
605 th->transport = RTSP_TRANSPORT_RTP;
606 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
607 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 608 /* x-pn-tng/<protocol> */
e1502118
LB
609 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
610 profile[0] = '\0';
119b4668 611 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 612 }
b6892136 613 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 614 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 615 else
90abbdba 616 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 617
1617ad97
FB
618 if (*p == ';')
619 p++;
620 /* get each parameter */
621 while (*p != '\0' && *p != ',') {
622 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
623 if (!strcmp(parameter, "port")) {
624 if (*p == '=') {
625 p++;
626 rtsp_parse_range(&th->port_min, &th->port_max, &p);
627 }
628 } else if (!strcmp(parameter, "client_port")) {
629 if (*p == '=') {
630 p++;
115329f1 631 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
632 &th->client_port_max, &p);
633 }
634 } else if (!strcmp(parameter, "server_port")) {
635 if (*p == '=') {
636 p++;
115329f1 637 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
638 &th->server_port_max, &p);
639 }
640 } else if (!strcmp(parameter, "interleaved")) {
641 if (*p == '=') {
642 p++;
115329f1 643 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
644 &th->interleaved_max, &p);
645 }
646 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
647 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
648 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
649 } else if (!strcmp(parameter, "ttl")) {
650 if (*p == '=') {
651 p++;
652 th->ttl = strtol(p, (char **)&p, 10);
653 }
654 } else if (!strcmp(parameter, "destination")) {
655 struct in_addr ipaddr;
656
657 if (*p == '=') {
658 p++;
659 get_word_sep(buf, sizeof(buf), ";,", &p);
115329f1 660 if (inet_aton(buf, &ipaddr))
1617ad97
FB
661 th->destination = ntohl(ipaddr.s_addr);
662 }
663 }
664 while (*p != ';' && *p != '\0' && *p != ',')
665 p++;
666 if (*p == ';')
667 p++;
668 }
669 if (*p == ',')
670 p++;
671
672 reply->nb_transports++;
673 }
674}
675
a9e534d5 676void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf)
1617ad97
FB
677{
678 const char *p;
679
680 /* NOTE: we do case independent match for broken servers */
681 p = buf;
f7d78f36 682 if (av_stristart(p, "Session:", &p)) {
30e79845 683 int t;
1617ad97 684 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
685 if (av_stristart(p, ";timeout=", &p) &&
686 (t = strtol(p, NULL, 10)) > 0) {
687 reply->timeout = t;
688 }
f7d78f36 689 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 690 reply->content_length = strtol(p, NULL, 10);
f7d78f36 691 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 692 rtsp_parse_transport(reply, p);
f7d78f36 693 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 694 reply->seq = strtol(p, NULL, 10);
f7d78f36 695 } else if (av_stristart(p, "Range:", &p)) {
31693e00 696 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
697 } else if (av_stristart(p, "RealChallenge1:", &p)) {
698 skip_spaces(&p);
699 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
700 } else if (av_stristart(p, "Server:", &p)) {
701 skip_spaces(&p);
702 av_strlcpy(reply->server, p, sizeof(reply->server));
1617ad97
FB
703 }
704}
705
2a42b5c3
LS
706static int url_readbuf(URLContext *h, unsigned char *buf, int size)
707{
708 int ret, len;
709
710 len = 0;
711 while (len < size) {
712 ret = url_read(h, buf+len, size-len);
713 if (ret < 1)
714 return ret;
715 len += ret;
716 }
717 return len;
718}
719
b7b8fc34
FB
720/* skip a RTP/TCP interleaved packet */
721static void rtsp_skip_packet(AVFormatContext *s)
722{
723 RTSPState *rt = s->priv_data;
724 int ret, len, len1;
725 uint8_t buf[1024];
726
2a42b5c3 727 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
728 if (ret != 3)
729 return;
80fb8234 730 len = AV_RB16(buf + 1);
67c9cd69
BC
731
732 dprintf(s, "skipping RTP packet len=%d\n", len);
733
b7b8fc34
FB
734 /* skip payload */
735 while (len > 0) {
736 len1 = len;
737 if (len1 > sizeof(buf))
738 len1 = sizeof(buf);
2a42b5c3 739 ret = url_readbuf(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
740 if (ret != len1)
741 return;
742 len -= len1;
743 }
744}
1617ad97 745
7e726132
RB
746/**
747 * Read a RTSP message from the server, or prepare to read data
748 * packets if we're reading data interleaved over the TCP/RTSP
749 * connection as well.
750 *
751 * @param s RTSP demuxer context
752 * @param reply pointer where the RTSP message header will be stored
753 * @param content_ptr pointer where the RTSP message body, if any, will
754 * be stored (length is in \p reply)
755 * @param return_on_interleaved_data whether the function may return if we
756 * encounter a data marker ('$'), which precedes data
757 * packets over interleaved TCP/RTSP connections. If this
758 * is set, this function will return 1 after encountering
759 * a '$'. If it is not set, the function will skip any
760 * data packets (if they are encountered), until a reply
761 * has been fully parsed. If no more data is available
762 * without parsing a reply, it will return an error.
763 *
764 * @returns 1 if a data packets is ready to be received, -1 on error,
765 * and 0 on success.
766 */
767static int
29b9f58b 768rtsp_read_reply (AVFormatContext *s, RTSPMessageHeader *reply,
7e726132 769 unsigned char **content_ptr, int return_on_interleaved_data)
1617ad97
FB
770{
771 RTSPState *rt = s->priv_data;
772 char buf[4096], buf1[1024], *q;
773 unsigned char ch;
774 const char *p;
7e726132 775 int ret, content_length, line_count = 0;
1617ad97
FB
776 unsigned char *content = NULL;
777
d541a7d2 778 memset(reply, 0, sizeof(*reply));
1617ad97 779
1617ad97 780 /* parse reply (XXX: use buffers) */
1617ad97
FB
781 rt->last_reply[0] = '\0';
782 for(;;) {
783 q = buf;
784 for(;;) {
7e726132
RB
785 ret = url_readbuf(rt->rtsp_hd, &ch, 1);
786#ifdef DEBUG_RTP_TCP
67c9cd69 787 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
788#endif
789 if (ret != 1)
790 return -1;
1617ad97
FB
791 if (ch == '\n')
792 break;
b7b8fc34
FB
793 if (ch == '$') {
794 /* XXX: only parse it if first char on line ? */
7e726132
RB
795 if (return_on_interleaved_data) {
796 return 1;
797 } else
b7b8fc34
FB
798 rtsp_skip_packet(s);
799 } else if (ch != '\r') {
1617ad97
FB
800 if ((q - buf) < sizeof(buf) - 1)
801 *q++ = ch;
802 }
803 }
804 *q = '\0';
67c9cd69
BC
805
806 dprintf(s, "line='%s'\n", buf);
807
1617ad97
FB
808 /* test if last line */
809 if (buf[0] == '\0')
810 break;
811 p = buf;
812 if (line_count == 0) {
813 /* get reply code */
814 get_word(buf1, sizeof(buf1), &p);
815 get_word(buf1, sizeof(buf1), &p);
816 reply->status_code = atoi(buf1);
817 } else {
818 rtsp_parse_line(reply, p);
75e61b0e
MR
819 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
820 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
821 }
822 line_count++;
823 }
115329f1 824
1617ad97 825 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 826 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 827
1617ad97
FB
828 content_length = reply->content_length;
829 if (content_length > 0) {
830 /* leave some room for a trailing '\0' (useful for simple parsing) */
831 content = av_malloc(content_length + 1);
2a42b5c3 832 (void)url_readbuf(rt->rtsp_hd, content, content_length);
1617ad97
FB
833 content[content_length] = '\0';
834 }
835 if (content_ptr)
836 *content_ptr = content;
e2e2e7dd
AB
837 else
838 av_free(content);
7e726132
RB
839
840 return 0;
1617ad97
FB
841}
842
30e79845 843static void rtsp_send_cmd_async (AVFormatContext *s,
29b9f58b
RB
844 const char *cmd, RTSPMessageHeader *reply,
845 unsigned char **content_ptr)
846{
847 RTSPState *rt = s->priv_data;
848 char buf[4096], buf1[1024];
849
850 rt->seq++;
851 av_strlcpy(buf, cmd, sizeof(buf));
852 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
853 av_strlcat(buf, buf1, sizeof(buf));
854 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
855 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
856 av_strlcat(buf, buf1, sizeof(buf));
857 }
858 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69
BC
859
860 dprintf(s, "Sending:\n%s--\n", buf);
861
29b9f58b 862 url_write(rt->rtsp_hd, buf, strlen(buf));
30e79845
RB
863 rt->last_cmd_time = av_gettime();
864}
865
866static void rtsp_send_cmd (AVFormatContext *s,
867 const char *cmd, RTSPMessageHeader *reply,
868 unsigned char **content_ptr)
869{
870 rtsp_send_cmd_async(s, cmd, reply, content_ptr);
29b9f58b 871
7e726132 872 rtsp_read_reply(s, reply, content_ptr, 0);
29b9f58b
RB
873}
874
1617ad97 875
8b1ab7bf
FB
876/* close and free RTSP streams */
877static void rtsp_close_streams(RTSPState *rt)
878{
879 int i;
880 RTSPStream *rtsp_st;
881
882 for(i=0;i<rt->nb_rtsp_streams;i++) {
883 rtsp_st = rt->rtsp_streams[i];
884 if (rtsp_st) {
0a861b6f 885 if (rtsp_st->transport_priv) {
accc248f 886 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 887 ff_rdt_parse_close(rtsp_st->transport_priv);
accc248f 888 else
0a861b6f 889 rtp_parse_close(rtsp_st->transport_priv);
accc248f 890 }
8b1ab7bf
FB
891 if (rtsp_st->rtp_handle)
892 url_close(rtsp_st->rtp_handle);
4934884a
RM
893 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
894 rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
8b1ab7bf 895 }
8b1ab7bf
FB
896 }
897 av_free(rt->rtsp_streams);
1a30d541
RB
898 if (rt->asf_ctx) {
899 av_close_input_stream (rt->asf_ctx);
900 rt->asf_ctx = NULL;
901 }
8b1ab7bf
FB
902}
903
ee0cb67f
RB
904static int
905rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
906{
accc248f 907 RTSPState *rt = s->priv_data;
ee0cb67f
RB
908 AVStream *st = NULL;
909
a6789dca
RB
910 /* open the RTP context */
911 if (rtsp_st->stream_index >= 0)
912 st = s->streams[rtsp_st->stream_index];
913 if (!st)
914 s->ctx_flags |= AVFMTCTX_NOHEADER;
accc248f
RB
915
916 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 917 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
accc248f
RB
918 rtsp_st->dynamic_protocol_context,
919 rtsp_st->dynamic_handler);
920 else
0a861b6f 921 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
5c918b27
RB
922 rtsp_st->sdp_payload_type,
923 &rtsp_st->rtp_payload_data);
a6789dca 924
0a861b6f 925 if (!rtsp_st->transport_priv) {
a6789dca 926 return AVERROR(ENOMEM);
accc248f 927 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
a6789dca 928 if(rtsp_st->dynamic_handler) {
0a861b6f 929 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
99a1d191
RB
930 rtsp_st->dynamic_protocol_context,
931 rtsp_st->dynamic_handler);
ee0cb67f 932 }
a6789dca 933 }
ee0cb67f
RB
934
935 return 0;
936}
937
53620bba
RB
938/**
939 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
940 */
941static int
e9dea59f 942make_setup_request (AVFormatContext *s, const char *host, int port,
90abbdba 943 int lower_transport, const char *real_challenge)
1617ad97
FB
944{
945 RTSPState *rt = s->priv_data;
f830c9a4 946 int rtx, j, i, err, interleave = 0;
1617ad97 947 RTSPStream *rtsp_st;
a9e534d5 948 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 949 char cmd[2048];
e9dea59f
RB
950 const char *trans_pref;
951
119b4668 952 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
953 trans_pref = "x-pn-tng";
954 else
955 trans_pref = "RTP/AVP";
115329f1 956
30e79845
RB
957 /* default timeout: 1 minute */
958 rt->timeout = 60;
959
1617ad97
FB
960 /* for each stream, make the setup request */
961 /* XXX: we assume the same server is used for the control of each
962 RTSP stream */
d1ccf0e0
RD
963
964 for(j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
965 char transport[2048];
966
f830c9a4
RB
967 /**
968 * WMS serves all UDP data over a single connection, the RTX, which
969 * isn't necessarily the first in the SDP but has to be the first
970 * to be set up, else the second/third SETUP will fail with a 461.
971 */
972 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
973 rt->server_type == RTSP_SERVER_WMS) {
974 if (i == 0) {
975 /* rtx first */
976 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
977 int len = strlen(rt->rtsp_streams[rtx]->control_url);
978 if (len >= 4 &&
979 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, "/rtx"))
980 break;
981 }
982 if (rtx == rt->nb_rtsp_streams)
983 return -1; /* no RTX found */
984 rtsp_st = rt->rtsp_streams[rtx];
985 } else
986 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
987 } else
2fea9650 988 rtsp_st = rt->rtsp_streams[i];
1617ad97 989
1617ad97 990 /* RTP/UDP */
90abbdba 991 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 992 char buf[256];
85fb7b34 993
f830c9a4
RB
994 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
995 port = reply->transports[0].client_port_min;
996 goto have_port;
997 }
998
85fb7b34 999 /* first try in specified port range */
d1ccf0e0
RD
1000 if (RTSP_RTP_PORT_MIN != 0) {
1001 while(j <= RTSP_RTP_PORT_MAX) {
b316aa1a 1002 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d", host, j);
ecdcbbf6 1003 j += 2; /* we will use two port by rtp stream (rtp and rtcp) */
dbf30963 1004 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) {
85fb7b34 1005 goto rtp_opened;
d1ccf0e0 1006 }
85fb7b34 1007 }
1617ad97 1008 }
85fb7b34 1009
d1ccf0e0
RD
1010/* then try on any port
1011** if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1012** err = AVERROR_INVALIDDATA;
1013** goto fail;
1014** }
1015*/
85fb7b34
FB
1016
1017 rtp_opened:
8b1ab7bf 1018 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1019 have_port:
0ad306bc 1020 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1021 "%s/UDP;", trans_pref);
1022 if (rt->server_type != RTSP_SERVER_REAL)
1023 av_strlcat(transport, "unicast;", sizeof(transport));
1024 av_strlcatf(transport, sizeof(transport),
1025 "client_port=%d", port);
f830c9a4
RB
1026 if (rt->transport == RTSP_TRANSPORT_RTP &&
1027 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1028 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1029 }
1030
1031 /* RTP/TCP */
90abbdba 1032 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1033 /** For WMS streams, the application streams are only used for
1034 * UDP. When trying to set it up for TCP streams, the server
1035 * will return an error. Therefore, we skip those streams. */
1036 if (rt->server_type == RTSP_SERVER_WMS &&
1037 s->streams[rtsp_st->stream_index]->codec->codec_type == CODEC_TYPE_DATA)
1038 continue;
0ad306bc 1039 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1040 "%s/TCP;", trans_pref);
1041 if (rt->server_type == RTSP_SERVER_WMS)
1042 av_strlcat(transport, "unicast;", sizeof(transport));
1043 av_strlcatf(transport, sizeof(transport),
1044 "interleaved=%d-%d",
1045 interleave, interleave + 1);
1046 interleave += 2;
1617ad97
FB
1047 }
1048
90abbdba 1049 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1050 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1051 "%s/UDP;multicast", trans_pref);
1617ad97 1052 }
d1c6e47c
RB
1053 if (rt->server_type == RTSP_SERVER_REAL ||
1054 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1055 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1056 snprintf(cmd, sizeof(cmd),
b6892136
FB
1057 "SETUP %s RTSP/1.0\r\n"
1058 "Transport: %s\r\n",
1617ad97 1059 rtsp_st->control_url, transport);
2e889ae4 1060 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1061 char real_res[41], real_csum[9];
1062 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1063 real_challenge);
1064 av_strlcatf(cmd, sizeof(cmd),
1065 "If-Match: %s\r\n"
1066 "RealChallenge2: %s, sd=%s\r\n",
1067 rt->session_id, real_res, real_csum);
1068 }
1617ad97 1069 rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
1070 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1071 err = 1;
1072 goto fail;
7e6ca34f
RB
1073 } else if (reply->status_code != RTSP_STATUS_OK ||
1074 reply->nb_transports != 1) {
1617ad97
FB
1075 err = AVERROR_INVALIDDATA;
1076 goto fail;
1077 }
1078
1079 /* XXX: same protocol for all streams is required */
1080 if (i > 0) {
119b4668
RB
1081 if (reply->transports[0].lower_transport != rt->lower_transport ||
1082 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1083 err = AVERROR_INVALIDDATA;
1084 goto fail;
1085 }
1086 } else {
90abbdba 1087 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1088 rt->transport = reply->transports[0].transport;
1617ad97
FB
1089 }
1090
1091 /* close RTP connection if not choosen */
90abbdba
RB
1092 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1093 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1094 url_close(rtsp_st->rtp_handle);
1095 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1096 }
1097
90abbdba
RB
1098 switch(reply->transports[0].lower_transport) {
1099 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1100 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1101 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1102 break;
115329f1 1103
90abbdba 1104 case RTSP_LOWER_TRANSPORT_UDP:
1617ad97
FB
1105 {
1106 char url[1024];
115329f1 1107
1617ad97 1108 /* XXX: also use address if specified */
115329f1 1109 snprintf(url, sizeof(url), "rtp://%s:%d",
1617ad97 1110 host, reply->transports[0].server_port_min);
f830c9a4
RB
1111 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1112 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1617ad97
FB
1113 err = AVERROR_INVALIDDATA;
1114 goto fail;
1115 }
1116 }
1117 break;
90abbdba 1118 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1617ad97
FB
1119 {
1120 char url[1024];
d02678ec 1121 struct in_addr in;
1617ad97 1122
d02678ec 1123 in.s_addr = htonl(reply->transports[0].destination);
35b74c3d 1124 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
d02678ec
LB
1125 inet_ntoa(in),
1126 reply->transports[0].port_min,
1127 reply->transports[0].ttl);
dbf30963 1128 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1617ad97
FB
1129 err = AVERROR_INVALIDDATA;
1130 goto fail;
1131 }
1132 }
1133 break;
1134 }
d1ccf0e0 1135
ee0cb67f 1136 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1137 goto fail;
1617ad97
FB
1138 }
1139
30e79845
RB
1140 if (reply->timeout > 0)
1141 rt->timeout = reply->timeout;
1142
2e889ae4 1143 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1144 rt->need_subscription = 1;
1145
53620bba
RB
1146 return 0;
1147
1148fail:
8a8754d8
RB
1149 for (i=0; i<rt->nb_rtsp_streams; i++) {
1150 if (rt->rtsp_streams[i]->rtp_handle) {
1151 url_close(rt->rtsp_streams[i]->rtp_handle);
1152 rt->rtsp_streams[i]->rtp_handle = NULL;
1153 }
1154 }
53620bba
RB
1155 return err;
1156}
1157
1158static int rtsp_read_header(AVFormatContext *s,
1159 AVFormatParameters *ap)
1160{
1161 RTSPState *rt = s->priv_data;
1162 char host[1024], path[1024], tcpname[1024], cmd[2048], *option_list, *option;
1163 URLContext *rtsp_hd;
1164 int port, ret, err;
a9e534d5 1165 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1166 unsigned char *content = NULL;
90abbdba 1167 int lower_transport_mask = 0;
1cf151e9 1168 char real_challenge[64];
53620bba
RB
1169
1170 /* extract hostname and port */
1171 url_split(NULL, 0, NULL, 0,
1172 host, sizeof(host), &port, path, sizeof(path), s->filename);
1173 if (port < 0)
1174 port = RTSP_DEFAULT_PORT;
1175
1176 /* search for options */
1177 option_list = strchr(path, '?');
1178 if (option_list) {
1179 /* remove the options from the path */
1180 *option_list++ = 0;
1181 while(option_list) {
1182 /* move the option pointer */
1183 option = option_list;
1184 option_list = strchr(option_list, '&');
1185 if (option_list)
1186 *(option_list++) = 0;
1187 /* handle the options */
1188 if (strcmp(option, "udp") == 0)
90abbdba 1189 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
53620bba 1190 else if (strcmp(option, "multicast") == 0)
90abbdba 1191 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
53620bba 1192 else if (strcmp(option, "tcp") == 0)
90abbdba 1193 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
53620bba
RB
1194 }
1195 }
1196
90abbdba 1197 if (!lower_transport_mask)
2a1d51c5 1198 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba
RB
1199
1200 /* open the tcp connexion */
1201 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
1202 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0)
1203 return AVERROR(EIO);
1204 rt->rtsp_hd = rtsp_hd;
1205 rt->seq = 0;
1206
1cf151e9
RB
1207 /* request options supported by the server; this also detects server type */
1208 for (rt->server_type = RTSP_SERVER_RTP;;) {
1209 snprintf(cmd, sizeof(cmd),
1210 "OPTIONS %s RTSP/1.0\r\n", s->filename);
2e889ae4 1211 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1212 av_strlcat(cmd,
1213 /**
1214 * The following entries are required for proper
1215 * streaming from a Realmedia server. They are
1216 * interdependent in some way although we currently
1217 * don't quite understand how. Values were copied
1218 * from mplayer SVN r23589.
1219 * @param CompanyID is a 16-byte ID in base64
1220 * @param ClientChallenge is a 16-byte ID in hex
1221 */
1222 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1223 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1224 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1225 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1226 sizeof(cmd));
1227 rtsp_send_cmd(s, cmd, reply, NULL);
1228 if (reply->status_code != RTSP_STATUS_OK) {
1229 err = AVERROR_INVALIDDATA;
1230 goto fail;
1231 }
1232
1233 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1234 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1235 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1236 continue;
7a86bafa
RB
1237 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1238 rt->server_type = RTSP_SERVER_WMS;
2e889ae4 1239 } else if (rt->server_type == RTSP_SERVER_REAL) {
1cf151e9
RB
1240 strcpy(real_challenge, reply->real_challenge);
1241 }
1242 break;
1243 }
1244
53620bba
RB
1245 /* describe the stream */
1246 snprintf(cmd, sizeof(cmd),
1247 "DESCRIBE %s RTSP/1.0\r\n"
1248 "Accept: application/sdp\r\n",
1249 s->filename);
2e889ae4 1250 if (rt->server_type == RTSP_SERVER_REAL) {
897ade1b
RB
1251 /**
1252 * The Require: attribute is needed for proper streaming from
1253 * Realmedia servers.
1254 */
1255 av_strlcat(cmd,
1256 "Require: com.real.retain-entity-for-setup\r\n",
1257 sizeof(cmd));
1258 }
53620bba
RB
1259 rtsp_send_cmd(s, cmd, reply, &content);
1260 if (!content) {
1261 err = AVERROR_INVALIDDATA;
1262 goto fail;
1263 }
1264 if (reply->status_code != RTSP_STATUS_OK) {
1265 err = AVERROR_INVALIDDATA;
1266 goto fail;
1267 }
1268
1269 /* now we got the SDP description, we parse it */
1270 ret = sdp_parse(s, (const char *)content);
1271 av_freep(&content);
1272 if (ret < 0) {
1273 err = AVERROR_INVALIDDATA;
1274 goto fail;
1275 }
1276
8a8754d8 1277 do {
90abbdba 1278 int lower_transport = ff_log2_tab[lower_transport_mask & ~(lower_transport_mask - 1)];
8a8754d8 1279
90abbdba 1280 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1281 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1282 real_challenge : NULL);
8a8754d8 1283 if (err < 0)
7e6ca34f 1284 goto fail;
90abbdba
RB
1285 lower_transport_mask &= ~(1 << lower_transport);
1286 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1287 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1288 goto fail;
1289 }
1290 } while (err);
53620bba 1291
ff762d6e
FB
1292 rt->state = RTSP_STATE_IDLE;
1293 rt->seek_timestamp = 0; /* default is to start stream at position
1294 zero */
c04c3282 1295 if (ap->initial_pause) {
ff762d6e
FB
1296 /* do not start immediately */
1297 } else {
1298 if (rtsp_read_play(s) < 0) {
1299 err = AVERROR_INVALIDDATA;
1617ad97
FB
1300 goto fail;
1301 }
1302 }
1617ad97
FB
1303 return 0;
1304 fail:
8b1ab7bf 1305 rtsp_close_streams(rt);
1617ad97
FB
1306 av_freep(&content);
1307 url_close(rt->rtsp_hd);
1308 return err;
1309}
1310
8b1ab7bf
FB
1311static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1312 uint8_t *buf, int buf_size)
1617ad97
FB
1313{
1314 RTSPState *rt = s->priv_data;
b6892136 1315 int id, len, i, ret;
1617ad97 1316 RTSPStream *rtsp_st;
1617ad97 1317
b6892136 1318#ifdef DEBUG_RTP_TCP
67c9cd69 1319 dprintf(s, "tcp_read_packet:\n");
b6892136 1320#endif
1617ad97
FB
1321 redo:
1322 for(;;) {
7e726132
RB
1323 RTSPMessageHeader reply;
1324
1325 ret = rtsp_read_reply(s, &reply, NULL, 1);
1326 if (ret == -1)
8b1ab7bf 1327 return -1;
7e726132 1328 if (ret == 1) /* received '$' */
1617ad97 1329 break;
7e726132 1330 /* XXX: parse message */
1617ad97 1331 }
2a42b5c3 1332 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b6892136 1333 if (ret != 3)
8b1ab7bf 1334 return -1;
b6892136 1335 id = buf[0];
80fb8234 1336 len = AV_RB16(buf + 1);
b6892136 1337#ifdef DEBUG_RTP_TCP
67c9cd69 1338 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1339#endif
8b1ab7bf 1340 if (len > buf_size || len < 12)
1617ad97
FB
1341 goto redo;
1342 /* get the data */
2a42b5c3 1343 ret = url_readbuf(rt->rtsp_hd, buf, len);
b6892136 1344 if (ret != len)
8b1ab7bf 1345 return -1;
985b05d3 1346 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1347 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1348 return -1;
115329f1 1349
1617ad97 1350 /* find the matching stream */
8b1ab7bf
FB
1351 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1352 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1353 if (id >= rtsp_st->interleaved_min &&
1354 id <= rtsp_st->interleaved_max)
1617ad97
FB
1355 goto found;
1356 }
1357 goto redo;
1358 found:
8b1ab7bf
FB
1359 *prtsp_st = rtsp_st;
1360 return len;
1617ad97
FB
1361}
1362
115329f1 1363static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
8b1ab7bf 1364 uint8_t *buf, int buf_size)
1617ad97 1365{
8b1ab7bf 1366 RTSPState *rt = s->priv_data;
1617ad97
FB
1367 RTSPStream *rtsp_st;
1368 fd_set rfds;
7e726132 1369 int fd, fd_max, n, i, ret, tcp_fd;
1617ad97
FB
1370 struct timeval tv;
1371
1372 for(;;) {
b7b8fc34 1373 if (url_interrupt_cb())
a960a1e0 1374 return AVERROR(EINTR);
1617ad97 1375 FD_ZERO(&rfds);
46ff7a5f
LA
1376 if (rt->rtsp_hd) {
1377 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1378 FD_SET(tcp_fd, &rfds);
1379 } else {
1380 fd_max = 0;
1381 tcp_fd = -1;
1382 }
8b1ab7bf
FB
1383 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1384 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1385 if (rtsp_st->rtp_handle) {
2fea9650
RB
1386 /* currently, we cannot probe RTCP handle because of
1387 * blocking restrictions */
bc8763cd
RB
1388 fd = url_get_file_handle(rtsp_st->rtp_handle);
1389 if (fd > fd_max)
1390 fd_max = fd;
1391 FD_SET(fd, &rfds);
f830c9a4 1392 }
1617ad97 1393 }
1617ad97 1394 tv.tv_sec = 0;
b7b8fc34 1395 tv.tv_usec = 100 * 1000;
1617ad97
FB
1396 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1397 if (n > 0) {
8b1ab7bf
FB
1398 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1399 rtsp_st = rt->rtsp_streams[i];
f830c9a4 1400 if (rtsp_st->rtp_handle) {
bc8763cd
RB
1401 fd = url_get_file_handle(rtsp_st->rtp_handle);
1402 if (FD_ISSET(fd, &rfds)) {
2fea9650
RB
1403 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1404 if (ret > 0) {
1405 *prtsp_st = rtsp_st;
1406 return ret;
1407 }
1617ad97
FB
1408 }
1409 }
1410 }
7e726132
RB
1411 if (FD_ISSET(tcp_fd, &rfds)) {
1412 RTSPMessageHeader reply;
1413
1414 rtsp_read_reply(s, &reply, NULL, 0);
1415 /* XXX: parse message */
1416 }
1617ad97
FB
1417 }
1418 }
1419}
1420
1421static int rtsp_read_packet(AVFormatContext *s,
1422 AVPacket *pkt)
1423{
1424 RTSPState *rt = s->priv_data;
8b1ab7bf
FB
1425 RTSPStream *rtsp_st;
1426 int ret, len;
e49906c3 1427 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
30e79845
RB
1428 RTSPMessageHeader reply1, *reply = &reply1;
1429 char cmd[1024];
8b1ab7bf 1430
572c6a38 1431 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1432 int i;
572c6a38 1433 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1434
572c6a38
RB
1435 for (i = 0; i < s->nb_streams; i++)
1436 cache[i] = s->streams[i]->discard;
1437
1438 if (!rt->need_subscription) {
1439 if (memcmp (cache, rt->real_setup_cache,
1440 sizeof(enum AVDiscard) * s->nb_streams)) {
1441 av_strlcatf(cmd, sizeof(cmd),
1442 "SET_PARAMETER %s RTSP/1.0\r\n"
1443 "Unsubscribe: %s\r\n",
1444 s->filename, rt->last_subscription);
1445 rtsp_send_cmd(s, cmd, reply, NULL);
1446 if (reply->status_code != RTSP_STATUS_OK)
1447 return AVERROR_INVALIDDATA;
1448 rt->need_subscription = 1;
1449 }
1256d16b 1450 }
1256d16b 1451
572c6a38
RB
1452 if (rt->need_subscription) {
1453 int r, rule_nr, first = 1;
1454
1455 memcpy(rt->real_setup_cache, cache,
1456 sizeof(enum AVDiscard) * s->nb_streams);
1457 rt->last_subscription[0] = 0;
1458
1459 snprintf(cmd, sizeof(cmd),
1460 "SET_PARAMETER %s RTSP/1.0\r\n"
1461 "Subscribe: ",
1462 s->filename);
1463 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1464 rule_nr = 0;
1465 for (r = 0; r < s->nb_streams; r++) {
1466 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1467 if (s->streams[r]->discard != AVDISCARD_ALL) {
1468 if (!first)
1469 av_strlcat(rt->last_subscription, ",",
1470 sizeof(rt->last_subscription));
1471 ff_rdt_subscribe_rule(
1472 rt->last_subscription,
1473 sizeof(rt->last_subscription), i, rule_nr);
1474 first = 0;
1475 }
1476 rule_nr++;
1477 }
1478 }
1479 }
1480 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1481 rtsp_send_cmd(s, cmd, reply, NULL);
1482 if (reply->status_code != RTSP_STATUS_OK)
1483 return AVERROR_INVALIDDATA;
1484 rt->need_subscription = 0;
1485
1486 if (rt->state == RTSP_STATE_PLAYING)
1487 rtsp_read_play (s);
1488 }
1256d16b
RB
1489 }
1490
8b1ab7bf 1491 /* get next frames from the same RTP packet */
0a861b6f 1492 if (rt->cur_transport_priv) {
119b4668 1493 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1494 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
4fce284c 1495 else
0a861b6f 1496 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
8b1ab7bf 1497 if (ret == 0) {
0a861b6f 1498 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1499 return 0;
1500 } else if (ret == 1) {
1501 return 0;
1502 } else {
0a861b6f 1503 rt->cur_transport_priv = NULL;
8b1ab7bf
FB
1504 }
1505 }
1617ad97 1506
8b1ab7bf
FB
1507 /* read next RTP packet */
1508 redo:
90abbdba 1509 switch(rt->lower_transport) {
1617ad97 1510 default:
90abbdba 1511 case RTSP_LOWER_TRANSPORT_TCP:
8b1ab7bf 1512 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1617ad97 1513 break;
90abbdba
RB
1514 case RTSP_LOWER_TRANSPORT_UDP:
1515 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
8b1ab7bf 1516 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
0a861b6f
RB
1517 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1518 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1617ad97
FB
1519 break;
1520 }
8b1ab7bf 1521 if (len < 0)
489b0d4d 1522 return len;
119b4668 1523 if (rt->transport == RTSP_TRANSPORT_RDT)
0a861b6f 1524 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
4fce284c 1525 else
0a861b6f 1526 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
8b1ab7bf
FB
1527 if (ret < 0)
1528 goto redo;
1529 if (ret == 1) {
1530 /* more packets may follow, so we save the RTP context */
0a861b6f 1531 rt->cur_transport_priv = rtsp_st->transport_priv;
8b1ab7bf 1532 }
30e79845
RB
1533
1534 /* send dummy request to keep TCP connection alive */
1535 if ((rt->server_type == RTSP_SERVER_WMS ||
1536 rt->server_type == RTSP_SERVER_REAL) &&
1537 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1538 if (rt->server_type == RTSP_SERVER_WMS) {
1539 snprintf(cmd, sizeof(cmd) - 1,
1540 "GET_PARAMETER %s RTSP/1.0\r\n",
1541 s->filename);
1542 rtsp_send_cmd_async(s, cmd, reply, NULL);
1543 } else {
1544 rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n",
1545 reply, NULL);
1546 }
1547 }
1548
8b1ab7bf 1549 return 0;
1617ad97
FB
1550}
1551
ff762d6e 1552static int rtsp_read_play(AVFormatContext *s)
b7b8fc34 1553{
ff762d6e 1554 RTSPState *rt = s->priv_data;
a9e534d5 1555 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1556 char cmd[1024];
1557
bc874dae 1558 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
ff762d6e 1559
2e889ae4 1560 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1561 if (rt->state == RTSP_STATE_PAUSED) {
1562 snprintf(cmd, sizeof(cmd),
1563 "PLAY %s RTSP/1.0\r\n",
1564 s->filename);
1565 } else {
1566 snprintf(cmd, sizeof(cmd),
1567 "PLAY %s RTSP/1.0\r\n"
1568 "Range: npt=%0.3f-\r\n",
1569 s->filename,
1570 (double)rt->seek_timestamp / AV_TIME_BASE);
1571 }
1572 rtsp_send_cmd(s, cmd, reply, NULL);
1573 if (reply->status_code != RTSP_STATUS_OK) {
1574 return -1;
1575 }
1256d16b 1576 }
5f86057f
RB
1577 rt->state = RTSP_STATE_PLAYING;
1578 return 0;
b7b8fc34
FB
1579}
1580
ff762d6e
FB
1581/* pause the stream */
1582static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1583{
ff762d6e 1584 RTSPState *rt = s->priv_data;
a9e534d5 1585 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34
FB
1586 char cmd[1024];
1587
b7b8fc34 1588 rt = s->priv_data;
115329f1 1589
ff762d6e
FB
1590 if (rt->state != RTSP_STATE_PLAYING)
1591 return 0;
2e889ae4 1592 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1593 snprintf(cmd, sizeof(cmd),
1594 "PAUSE %s RTSP/1.0\r\n",
1595 s->filename);
1596 rtsp_send_cmd(s, cmd, reply, NULL);
1597 if (reply->status_code != RTSP_STATUS_OK) {
1598 return -1;
1599 }
1256d16b 1600 }
5f86057f
RB
1601 rt->state = RTSP_STATE_PAUSED;
1602 return 0;
b7b8fc34
FB
1603}
1604
115329f1 1605static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1606 int64_t timestamp, int flags)
ff762d6e
FB
1607{
1608 RTSPState *rt = s->priv_data;
115329f1 1609
50755217 1610 rt->seek_timestamp = av_rescale_q(timestamp, s->streams[stream_index]->time_base, AV_TIME_BASE_Q);
ff762d6e
FB
1611 switch(rt->state) {
1612 default:
1613 case RTSP_STATE_IDLE:
1614 break;
1615 case RTSP_STATE_PLAYING:
1616 if (rtsp_read_play(s) != 0)
1617 return -1;
1618 break;
1619 case RTSP_STATE_PAUSED:
1620 rt->state = RTSP_STATE_IDLE;
1621 break;
1622 }
1623 return 0;
1624}
1625
1617ad97
FB
1626static int rtsp_read_close(AVFormatContext *s)
1627{
1628 RTSPState *rt = s->priv_data;
a9e534d5 1629 RTSPMessageHeader reply1, *reply = &reply1;
1617ad97
FB
1630 char cmd[1024];
1631
b6892136 1632#if 0
1617ad97 1633 /* NOTE: it is valid to flush the buffer here */
90abbdba 1634 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1635 url_fclose(&rt->rtsp_gb);
1636 }
b6892136 1637#endif
115329f1 1638 snprintf(cmd, sizeof(cmd),
b6892136 1639 "TEARDOWN %s RTSP/1.0\r\n",
1617ad97
FB
1640 s->filename);
1641 rtsp_send_cmd(s, cmd, reply, NULL);
1642
8b1ab7bf 1643 rtsp_close_streams(rt);
1617ad97
FB
1644 url_close(rt->rtsp_hd);
1645 return 0;
1646}
1647
b250f9c6 1648#if CONFIG_RTSP_DEMUXER
d2a067d1 1649AVInputFormat rtsp_demuxer = {
1617ad97 1650 "rtsp",
bde15e74 1651 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1652 sizeof(RTSPState),
1653 rtsp_probe,
1654 rtsp_read_header,
1655 rtsp_read_packet,
1656 rtsp_read_close,
ff762d6e 1657 rtsp_read_seek,
bb76a117 1658 .flags = AVFMT_NOFILE,
ff762d6e
FB
1659 .read_play = rtsp_read_play,
1660 .read_pause = rtsp_read_pause,
1617ad97 1661};
96862926 1662#endif
1617ad97 1663
cb1fdc61 1664static int sdp_probe(AVProbeData *p1)
93ced3e8 1665{
0e1ceacd 1666 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1667
1668 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1669 while (p < p_end && *p != '\0') {
f7d78f36 1670 if (p + sizeof("c=IN IP4") - 1 < p_end && av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1671 return AVPROBE_SCORE_MAX / 2;
0e1ceacd
MN
1672
1673 while(p < p_end - 1 && *p != '\n') p++;
1674 if (++p >= p_end)
cb1fdc61 1675 break;
cb1fdc61
FB
1676 if (*p == '\r')
1677 p++;
1678 }
93ced3e8
FB
1679 return 0;
1680}
1681
1682#define SDP_MAX_SIZE 8192
1683
1684static int sdp_read_header(AVFormatContext *s,
1685 AVFormatParameters *ap)
1686{
8b1ab7bf 1687 RTSPState *rt = s->priv_data;
93ced3e8
FB
1688 RTSPStream *rtsp_st;
1689 int size, i, err;
1690 char *content;
1691 char url[1024];
1692
1693 /* read the whole sdp file */
1694 /* XXX: better loading */
1695 content = av_malloc(SDP_MAX_SIZE);
899681cd 1696 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1697 if (size <= 0) {
1698 av_free(content);
1699 return AVERROR_INVALIDDATA;
1700 }
1701 content[size] ='\0';
1702
1703 sdp_parse(s, content);
1704 av_free(content);
1705
1706 /* open each RTP stream */
8b1ab7bf
FB
1707 for(i=0;i<rt->nb_rtsp_streams;i++) {
1708 rtsp_st = rt->rtsp_streams[i];
115329f1 1709
d2bf42be 1710 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
115329f1 1711 inet_ntoa(rtsp_st->sdp_ip),
93ced3e8 1712 rtsp_st->sdp_port,
d2bf42be 1713 rtsp_st->sdp_port,
93ced3e8 1714 rtsp_st->sdp_ttl);
dbf30963 1715 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1716 err = AVERROR_INVALIDDATA;
1717 goto fail;
1718 }
ee0cb67f 1719 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1720 goto fail;
93ced3e8
FB
1721 }
1722 return 0;
1723 fail:
8b1ab7bf 1724 rtsp_close_streams(rt);
93ced3e8
FB
1725 return err;
1726}
1727
1728static int sdp_read_packet(AVFormatContext *s,
1729 AVPacket *pkt)
1730{
8b1ab7bf 1731 return rtsp_read_packet(s, pkt);
93ced3e8
FB
1732}
1733
1734static int sdp_read_close(AVFormatContext *s)
1735{
8b1ab7bf
FB
1736 RTSPState *rt = s->priv_data;
1737 rtsp_close_streams(rt);
93ced3e8
FB
1738 return 0;
1739}
1740
b250f9c6 1741#if CONFIG_SDP_DEMUXER
ff70e601 1742AVInputFormat sdp_demuxer = {
93ced3e8 1743 "sdp",
bde15e74 1744 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1745 sizeof(RTSPState),
1746 sdp_probe,
1747 sdp_read_header,
1748 sdp_read_packet,
1749 sdp_read_close,
1750};
ff70e601 1751#endif
93ced3e8 1752
b250f9c6 1753#if CONFIG_REDIR_DEMUXER
1617ad97
FB
1754/* dummy redirector format (used directly in av_open_input_file now) */
1755static int redir_probe(AVProbeData *pd)
1756{
1757 const char *p;
1758 p = pd->buf;
36aa7bc2 1759 skip_spaces(&p);
f7d78f36
MR
1760 if (av_strstart(p, "http://", NULL) ||
1761 av_strstart(p, "rtsp://", NULL))
1617ad97
FB
1762 return AVPROBE_SCORE_MAX;
1763 return 0;
1764}
1765
e8acf0ed 1766static int redir_read_header(AVFormatContext *s, AVFormatParameters *ap)
1617ad97
FB
1767{
1768 char buf[4096], *q;
1769 int c;
1770 AVFormatContext *ic = NULL;
e8acf0ed 1771 ByteIOContext *f = s->pb;
1617ad97
FB
1772
1773 /* parse each URL and try to open it */
1774 c = url_fgetc(f);
1775 while (c != URL_EOF) {
1776 /* skip spaces */
1777 for(;;) {
1778 if (!redir_isspace(c))
1779 break;
1780 c = url_fgetc(f);
1781 }
1782 if (c == URL_EOF)
1783 break;
1784 /* record url */
1785 q = buf;
1786 for(;;) {
1787 if (c == URL_EOF || redir_isspace(c))
1788 break;
1789 if ((q - buf) < sizeof(buf) - 1)
1790 *q++ = c;
1791 c = url_fgetc(f);
1792 }
1793 *q = '\0';
1794 //printf("URL='%s'\n", buf);
1795 /* try to open the media file */
1796 if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
1797 break;
1798 }
1617ad97 1799 if (!ic)
6f3e0b21 1800 return AVERROR(EIO);
e8acf0ed
LA
1801
1802 *s = *ic;
1803 url_fclose(f);
1804
1805 return 0;
1617ad97
FB
1806}
1807
d2a067d1 1808AVInputFormat redir_demuxer = {
1617ad97 1809 "redir",
bde15e74 1810 NULL_IF_CONFIG_SMALL("Redirector format"),
1617ad97
FB
1811 0,
1812 redir_probe,
e8acf0ed 1813 redir_read_header,
1617ad97
FB
1814 NULL,
1815 NULL,
1816};
e7047005 1817#endif