Add truncf() replacement function.
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
1617ad97
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3 * Copyright (c) 2002 Fabrice Bellard.
4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
1617ad97
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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"
1617ad97
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26#include "avformat.h"
27
db0ed93e 28#include <sys/time.h>
6ad1c9c9 29#ifdef HAVE_SYS_SELECT_H
933bd8e2 30#include <sys/select.h>
6ad1c9c9 31#endif
ea452b54 32#include <strings.h>
42572ef5 33#include "network.h"
c971ff19 34#include "rtsp.h"
1617ad97 35
4934884a 36#include "rtp_internal.h"
e9dea59f 37#include "rdt.h"
4934884a 38
1617ad97 39//#define DEBUG
b6892136 40//#define DEBUG_RTP_TCP
1617ad97 41
ff762d6e
FB
42static int rtsp_read_play(AVFormatContext *s);
43
1617ad97
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44/* XXX: currently, the only way to change the protocols consists in
45 changing this variable */
1617ad97 46
c482500f 47#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 48int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 49#endif
85fb7b34 50
1617ad97
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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
58static int redir_isspace(int c)
59{
ccd425e7 60 return c == ' ' || c == '\t' || c == '\n' || c == '\r';
1617ad97
FB
61}
62
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
115329f1 72static void get_word_sep(char *buf, int buf_size, const char *sep,
1617ad97
FB
73 const char **pp)
74{
75 const char *p;
76 char *q;
77
78 p = *pp;
d1ccf0e0
RD
79 if (*p == '/')
80 p++;
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81 skip_spaces(&p);
82 q = buf;
83 while (!strchr(sep, *p) && *p != '\0') {
84 if ((q - buf) < buf_size - 1)
85 *q++ = *p;
86 p++;
87 }
88 if (buf_size > 0)
89 *q = '\0';
90 *pp = p;
91}
92
93static void get_word(char *buf, int buf_size, const char **pp)
94{
95 const char *p;
96 char *q;
97
98 p = *pp;
99 skip_spaces(&p);
100 q = buf;
101 while (!redir_isspace(*p) && *p != '\0') {
102 if ((q - buf) < buf_size - 1)
103 *q++ = *p;
104 p++;
105 }
106 if (buf_size > 0)
107 *q = '\0';
108 *pp = p;
109}
110
93ced3e8
FB
111/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other
112 params>] */
4934884a 113static int sdp_parse_rtpmap(AVCodecContext *codec, RTSPStream *rtsp_st, int payload_type, const char *p)
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FB
114{
115 char buf[256];
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RD
116 int i;
117 AVCodec *c;
7b49ce2e 118 const char *c_name;
93ced3e8 119
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RD
120 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
121 see if we can handle this kind of payload */
93ced3e8 122 get_word_sep(buf, sizeof(buf), "/", &p);
d1ccf0e0 123 if (payload_type >= RTP_PT_PRIVATE) {
4934884a
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124 RTPDynamicProtocolHandler *handler= RTPFirstDynamicPayloadHandler;
125 while(handler) {
126 if (!strcmp(buf, handler->enc_name) && (codec->codec_type == handler->codec_type)) {
127 codec->codec_id = handler->codec_id;
128 rtsp_st->dynamic_handler= handler;
129 if(handler->open) {
130 rtsp_st->dynamic_protocol_context= handler->open();
131 }
d1ccf0e0
RD
132 break;
133 }
4934884a
RM
134 handler= handler->next;
135 }
93ced3e8 136 } else {
d1ccf0e0
RD
137 /* We are in a standard case ( from http://www.iana.org/assignments/rtp-parameters) */
138 /* search into AVRtpPayloadTypes[] */
7ed19d7f 139 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
140 }
141
142 c = avcodec_find_decoder(codec->codec_id);
143 if (c && c->name)
7b49ce2e 144 c_name = c->name;
d1ccf0e0
RD
145 else
146 c_name = (char *)NULL;
147
148 if (c_name) {
149 get_word_sep(buf, sizeof(buf), "/", &p);
150 i = atoi(buf);
151 switch (codec->codec_type) {
152 case CODEC_TYPE_AUDIO:
153 av_log(codec, AV_LOG_DEBUG, " audio codec set to : %s\n", c_name);
154 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
155 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
156 if (i > 0) {
157 codec->sample_rate = i;
158 get_word_sep(buf, sizeof(buf), "/", &p);
159 i = atoi(buf);
160 if (i > 0)
161 codec->channels = i;
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162 // TODO: there is a bug here; if it is a mono stream, and less than 22000Hz, faad upconverts to stereo and twice the
163 // frequency. No problem, but the sample rate is being set here by the sdp line. Upcoming patch forthcoming. (rdm)
d1ccf0e0
RD
164 }
165 av_log(codec, AV_LOG_DEBUG, " audio samplerate set to : %i\n", codec->sample_rate);
166 av_log(codec, AV_LOG_DEBUG, " audio channels set to : %i\n", codec->channels);
167 break;
168 case CODEC_TYPE_VIDEO:
169 av_log(codec, AV_LOG_DEBUG, " video codec set to : %s\n", c_name);
170 break;
171 default:
172 break;
173 }
174 return 0;
93ced3e8 175 }
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RD
176
177 return -1;
93ced3e8
FB
178}
179
180/* return the length and optionnaly the data */
181static int hex_to_data(uint8_t *data, const char *p)
182{
183 int c, len, v;
184
185 len = 0;
186 v = 1;
187 for(;;) {
188 skip_spaces(&p);
189 if (p == '\0')
190 break;
191 c = toupper((unsigned char)*p++);
192 if (c >= '0' && c <= '9')
193 c = c - '0';
194 else if (c >= 'A' && c <= 'F')
195 c = c - 'A' + 10;
196 else
197 break;
198 v = (v << 4) | c;
199 if (v & 0x100) {
200 if (data)
201 data[len] = v;
202 len++;
203 v = 1;
204 }
205 }
206 return len;
207}
208
d1ccf0e0
RD
209static void sdp_parse_fmtp_config(AVCodecContext *codec, char *attr, char *value)
210{
211 switch (codec->codec_id) {
212 case CODEC_ID_MPEG4:
cbee7a69 213 case CODEC_ID_AAC:
d1ccf0e0
RD
214 if (!strcmp(attr, "config")) {
215 /* decode the hexa encoded parameter */
216 int len = hex_to_data(NULL, value);
217 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
218 if (!codec->extradata)
219 return;
220 codec->extradata_size = len;
221 hex_to_data(codec->extradata, value);
222 }
223 break;
224 default:
225 break;
226 }
227 return;
228}
229
644e7acb 230typedef struct {
7b49ce2e 231 const char *str;
d1ccf0e0
RD
232 uint16_t type;
233 uint32_t offset;
644e7acb 234} AttrNameMap;
d1ccf0e0
RD
235
236/* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
237#define ATTR_NAME_TYPE_INT 0
238#define ATTR_NAME_TYPE_STR 1
644e7acb 239static const AttrNameMap attr_names[]=
d1ccf0e0 240{
be73a544
LA
241 {"SizeLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, sizelength)},
242 {"IndexLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexlength)},
243 {"IndexDeltaLength", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, indexdeltalength)},
244 {"profile-level-id", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, profile_level_id)},
245 {"StreamType", ATTR_NAME_TYPE_INT, offsetof(RTPPayloadData, streamtype)},
246 {"mode", ATTR_NAME_TYPE_STR, offsetof(RTPPayloadData, mode)},
d1ccf0e0
RD
247 {NULL, -1, -1},
248};
249
d0deedcb
RM
250/** parse the attribute line from the fmtp a line of an sdp resonse. This is broken out as a function
251* because it is used in rtp_h264.c, which is forthcoming.
252*/
253int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size)
254{
255 skip_spaces(p);
256 if(**p)
257 {
258 get_word_sep(attr, attr_size, "=", p);
259 if (**p == '=')
260 (*p)++;
261 get_word_sep(value, value_size, ";", p);
262 if (**p == ';')
263 (*p)++;
264 return 1;
265 }
266 return 0;
267}
268
d1ccf0e0
RD
269/* parse a SDP line and save stream attributes */
270static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
271{
272 char attr[256];
273 char value[4096];
d1ccf0e0
RD
274 int i;
275
276 RTSPStream *rtsp_st = st->priv_data;
01f4895c 277 AVCodecContext *codec = st->codec;
be73a544 278 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
279
280 /* loop on each attribute */
1ad20f96
RM
281 while(rtsp_next_attr_and_value(&p, attr, sizeof(attr), value, sizeof(value)))
282 {
bb270c08 283 /* grab the codec extra_data from the config parameter of the fmtp line */
d1ccf0e0
RD
284 sdp_parse_fmtp_config(codec, attr, value);
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;
327} SDPParseState;
328
329static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
330 int letter, const char *buf)
331{
8b1ab7bf 332 RTSPState *rt = s->priv_data;
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333 char buf1[64], st_type[64];
334 const char *p;
fb65d2ca
DP
335 enum CodecType codec_type;
336 int payload_type, i;
1617ad97
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337 AVStream *st;
338 RTSPStream *rtsp_st;
93ced3e8
FB
339 struct in_addr sdp_ip;
340 int ttl;
341
1617ad97
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342#ifdef DEBUG
343 printf("sdp: %c='%s'\n", letter, buf);
344#endif
345
346 p = buf;
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':
75e61b0e 375 av_strlcpy(s->title, p, sizeof(s->title));
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FB
376 break;
377 case 'i':
378 if (s->nb_streams == 0) {
75e61b0e 379 av_strlcpy(s->comment, p, sizeof(s->comment));
1617ad97
FB
380 break;
381 }
382 break;
383 case 'm':
384 /* new stream */
385 get_word(st_type, sizeof(st_type), &p);
386 if (!strcmp(st_type, "audio")) {
387 codec_type = CODEC_TYPE_AUDIO;
388 } else if (!strcmp(st_type, "video")) {
389 codec_type = CODEC_TYPE_VIDEO;
390 } else {
391 return;
392 }
1617ad97
FB
393 rtsp_st = av_mallocz(sizeof(RTSPStream));
394 if (!rtsp_st)
395 return;
8b1ab7bf
FB
396 rtsp_st->stream_index = -1;
397 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
398
399 rtsp_st->sdp_ip = s1->default_ip;
400 rtsp_st->sdp_ttl = s1->default_ttl;
401
93ced3e8
FB
402 get_word(buf1, sizeof(buf1), &p); /* port */
403 rtsp_st->sdp_port = atoi(buf1);
404
405 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 406
93ced3e8
FB
407 /* XXX: handle list of formats */
408 get_word(buf1, sizeof(buf1), &p); /* format list */
409 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 410
7ed19d7f 411 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
412 /* no corresponding stream */
413 } else {
414 st = av_new_stream(s, 0);
415 if (!st)
416 return;
417 st->priv_data = rtsp_st;
418 rtsp_st->stream_index = st->index;
01f4895c 419 st->codec->codec_type = codec_type;
d1ccf0e0 420 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 421 /* if standard payload type, we can find the codec right now */
01f4895c 422 rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
423 }
424 }
1617ad97 425 /* put a default control url */
75e61b0e 426 av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url));
1617ad97
FB
427 break;
428 case 'a':
f7d78f36 429 if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
1617ad97
FB
430 char proto[32];
431 /* get the control url */
432 st = s->streams[s->nb_streams - 1];
433 rtsp_st = st->priv_data;
115329f1 434
1617ad97 435 /* XXX: may need to add full url resolution */
6ba5cbc6 436 url_split(proto, sizeof(proto), NULL, 0, NULL, 0, NULL, NULL, 0, p);
1617ad97
FB
437 if (proto[0] == '\0') {
438 /* relative control URL */
75e61b0e
MR
439 av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url));
440 av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 441 } else {
75e61b0e 442 av_strlcpy(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
1617ad97 443 }
83d14c85 444 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 445 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 446 get_word(buf1, sizeof(buf1), &p);
93ced3e8 447 payload_type = atoi(buf1);
83d14c85 448 st = s->streams[s->nb_streams - 1];
ff16f551
RB
449 rtsp_st = st->priv_data;
450 sdp_parse_rtpmap(st->codec, rtsp_st, payload_type, p);
f7d78f36 451 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 452 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 453 get_word(buf1, sizeof(buf1), &p);
93ced3e8
FB
454 payload_type = atoi(buf1);
455 for(i = 0; i < s->nb_streams;i++) {
456 st = s->streams[i];
457 rtsp_st = st->priv_data;
458 if (rtsp_st->sdp_payload_type == payload_type) {
4934884a 459 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 460 if(!rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf)) {
4934884a
RM
461 sdp_parse_fmtp(st, p);
462 }
463 } else {
ed787542 464 sdp_parse_fmtp(st, p);
4934884a 465 }
93ced3e8
FB
466 }
467 }
f7d78f36 468 } else if(av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
469 // let dynamic protocol handlers have a stab at the line.
470 get_word(buf1, sizeof(buf1), &p);
471 payload_type = atoi(buf1);
472 for(i = 0; i < s->nb_streams;i++) {
473 st = s->streams[i];
474 rtsp_st = st->priv_data;
475 if (rtsp_st->sdp_payload_type == payload_type) {
476 if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) {
7b2a0708 477 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, rtsp_st->dynamic_protocol_context, buf);
d0deedcb
RM
478 }
479 }
480 }
f7d78f36 481 } else if(av_strstart(p, "range:", &p)) {
31693e00
RM
482 int64_t start, end;
483
484 // this is so that seeking on a streamed file can work.
485 rtsp_parse_range_npt(p, &start, &end);
486 s->start_time= start;
487 s->duration= (end==AV_NOPTS_VALUE)?AV_NOPTS_VALUE:end-start; // AV_NOPTS_VALUE means live broadcast (and can't seek)
119b4668
RB
488 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
489 if (atoi(p) == 1)
490 rt->transport = RTSP_TRANSPORT_RDT;
8646b907 491 } else if (s->nb_streams > 0) {
3ca45429
RB
492 if (rt->server_type == RTSP_SERVER_REAL)
493 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
494
8646b907
RB
495 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
496 if (rtsp_st->dynamic_handler &&
497 rtsp_st->dynamic_handler->parse_sdp_a_line)
7b2a0708 498 rtsp_st->dynamic_handler->parse_sdp_a_line(s, s->nb_streams - 1,
8646b907 499 rtsp_st->dynamic_protocol_context, buf);
1617ad97
FB
500 }
501 break;
502 }
503}
504
5c91a675 505static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
506{
507 const char *p;
508 int letter;
9211bcdd
RB
509 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
510 * contain long SDP lines containing complete ASF Headers (several
511 * kB) or arrays of MDPR (RM stream descriptor) headers plus
512 * "rulebooks" describing their properties. Therefore, the SDP line
513 * buffer is large. */
e322d3f5 514 char buf[8192], *q;
93ced3e8 515 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 516
93ced3e8 517 memset(s1, 0, sizeof(SDPParseState));
1617ad97
FB
518 p = content;
519 for(;;) {
520 skip_spaces(&p);
521 letter = *p;
522 if (letter == '\0')
523 break;
524 p++;
525 if (*p != '=')
526 goto next_line;
527 p++;
528 /* get the content */
529 q = buf;
b6892136 530 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
531 if ((q - buf) < sizeof(buf) - 1)
532 *q++ = *p;
533 p++;
534 }
535 *q = '\0';
93ced3e8 536 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
537 next_line:
538 while (*p != '\n' && *p != '\0')
539 p++;
540 if (*p == '\n')
541 p++;
542 }
543 return 0;
544}
545
546static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
547{
548 const char *p;
549 int v;
550
551 p = *pp;
552 skip_spaces(&p);
553 v = strtol(p, (char **)&p, 10);
554 if (*p == '-') {
555 p++;
556 *min_ptr = v;
557 v = strtol(p, (char **)&p, 10);
558 *max_ptr = v;
559 } else {
560 *min_ptr = v;
561 *max_ptr = v;
562 }
563 *pp = p;
564}
565
566/* XXX: only one transport specification is parsed */
567static void rtsp_parse_transport(RTSPHeader *reply, const char *p)
568{
569 char transport_protocol[16];
570 char profile[16];
571 char lower_transport[16];
572 char parameter[16];
573 RTSPTransportField *th;
574 char buf[256];
115329f1 575
1617ad97 576 reply->nb_transports = 0;
115329f1 577
1617ad97
FB
578 for(;;) {
579 skip_spaces(&p);
580 if (*p == '\0')
581 break;
582
583 th = &reply->transports[reply->nb_transports];
584
115329f1 585 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97
FB
586 "/", &p);
587 if (*p == '/')
588 p++;
e1502118 589 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
590 get_word_sep(profile, sizeof(profile), "/;,", &p);
591 lower_transport[0] = '\0';
592 /* rtp/avp/<protocol> */
593 if (*p == '/') {
594 p++;
595 get_word_sep(lower_transport, sizeof(lower_transport),
596 ";,", &p);
119b4668
RB
597 }
598 th->transport = RTSP_TRANSPORT_RTP;
599 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
600 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 601 /* x-pn-tng/<protocol> */
e1502118
LB
602 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
603 profile[0] = '\0';
119b4668 604 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 605 }
b6892136 606 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 607 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 608 else
90abbdba 609 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 610
1617ad97
FB
611 if (*p == ';')
612 p++;
613 /* get each parameter */
614 while (*p != '\0' && *p != ',') {
615 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
616 if (!strcmp(parameter, "port")) {
617 if (*p == '=') {
618 p++;
619 rtsp_parse_range(&th->port_min, &th->port_max, &p);
620 }
621 } else if (!strcmp(parameter, "client_port")) {
622 if (*p == '=') {
623 p++;
115329f1 624 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
625 &th->client_port_max, &p);
626 }
627 } else if (!strcmp(parameter, "server_port")) {
628 if (*p == '=') {
629 p++;
115329f1 630 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
631 &th->server_port_max, &p);
632 }
633 } else if (!strcmp(parameter, "interleaved")) {
634 if (*p == '=') {
635 p++;
115329f1 636 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
637 &th->interleaved_max, &p);
638 }
639 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
640 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
641 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
642 } else if (!strcmp(parameter, "ttl")) {
643 if (*p == '=') {
644 p++;
645 th->ttl = strtol(p, (char **)&p, 10);
646 }
647 } else if (!strcmp(parameter, "destination")) {
648 struct in_addr ipaddr;
649
650 if (*p == '=') {
651 p++;
652 get_word_sep(buf, sizeof(buf), ";,", &p);
115329f1 653 if (inet_aton(buf, &ipaddr))
1617ad97
FB
654 th->destination = ntohl(ipaddr.s_addr);
655 }
656 }
657 while (*p != ';' && *p != '\0' && *p != ',')
658 p++;
659 if (*p == ';')
660 p++;
661 }
662 if (*p == ',')
663 p++;
664
665 reply->nb_transports++;
666 }
667}
668
669void rtsp_parse_line(RTSPHeader *reply, const char *buf)
670{
671 const char *p;
672
673 /* NOTE: we do case independent match for broken servers */
674 p = buf;
f7d78f36 675 if (av_stristart(p, "Session:", &p)) {
1617ad97 676 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
f7d78f36 677 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 678 reply->content_length = strtol(p, NULL, 10);
f7d78f36 679 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 680 rtsp_parse_transport(reply, p);
f7d78f36 681 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 682 reply->seq = strtol(p, NULL, 10);
f7d78f36 683 } else if (av_stristart(p, "Range:", &p)) {
31693e00 684 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
685 } else if (av_stristart(p, "RealChallenge1:", &p)) {
686 skip_spaces(&p);
687 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
688 } else if (av_stristart(p, "Server:", &p)) {
689 skip_spaces(&p);
690 av_strlcpy(reply->server, p, sizeof(reply->server));
1617ad97
FB
691 }
692}
693
2a42b5c3
LS
694static int url_readbuf(URLContext *h, unsigned char *buf, int size)
695{
696 int ret, len;
697
698 len = 0;
699 while (len < size) {
700 ret = url_read(h, buf+len, size-len);
701 if (ret < 1)
702 return ret;
703 len += ret;
704 }
705 return len;
706}
707
b7b8fc34
FB
708/* skip a RTP/TCP interleaved packet */
709static void rtsp_skip_packet(AVFormatContext *s)
710{
711 RTSPState *rt = s->priv_data;
712 int ret, len, len1;
713 uint8_t buf[1024];
714
2a42b5c3 715 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
716 if (ret != 3)
717 return;
80fb8234 718 len = AV_RB16(buf + 1);
b7b8fc34
FB
719#ifdef DEBUG
720 printf("skipping RTP packet len=%d\n", len);
721#endif
722 /* skip payload */
723 while (len > 0) {
724 len1 = len;
725 if (len1 > sizeof(buf))
726 len1 = sizeof(buf);
2a42b5c3 727 ret = url_readbuf(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
728 if (ret != len1)
729 return;
730 len -= len1;
731 }
732}
1617ad97 733
115329f1
DB
734static void rtsp_send_cmd(AVFormatContext *s,
735 const char *cmd, RTSPHeader *reply,
1617ad97
FB
736 unsigned char **content_ptr)
737{
738 RTSPState *rt = s->priv_data;
739 char buf[4096], buf1[1024], *q;
740 unsigned char ch;
741 const char *p;
742 int content_length, line_count;
743 unsigned char *content = NULL;
744
745 memset(reply, 0, sizeof(RTSPHeader));
746
747 rt->seq++;
75e61b0e 748 av_strlcpy(buf, cmd, sizeof(buf));
b6892136 749 snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq);
75e61b0e 750 av_strlcat(buf, buf1, sizeof(buf));
1617ad97 751 if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
b6892136 752 snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id);
75e61b0e 753 av_strlcat(buf, buf1, sizeof(buf));
1617ad97 754 }
75e61b0e 755 av_strlcat(buf, "\r\n", sizeof(buf));
1617ad97
FB
756#ifdef DEBUG
757 printf("Sending:\n%s--\n", buf);
758#endif
759 url_write(rt->rtsp_hd, buf, strlen(buf));
760
761 /* parse reply (XXX: use buffers) */
762 line_count = 0;
763 rt->last_reply[0] = '\0';
764 for(;;) {
765 q = buf;
766 for(;;) {
2a42b5c3 767 if (url_readbuf(rt->rtsp_hd, &ch, 1) != 1)
1617ad97
FB
768 break;
769 if (ch == '\n')
770 break;
b7b8fc34
FB
771 if (ch == '$') {
772 /* XXX: only parse it if first char on line ? */
773 rtsp_skip_packet(s);
774 } else if (ch != '\r') {
1617ad97
FB
775 if ((q - buf) < sizeof(buf) - 1)
776 *q++ = ch;
777 }
778 }
779 *q = '\0';
780#ifdef DEBUG
781 printf("line='%s'\n", buf);
782#endif
783 /* test if last line */
784 if (buf[0] == '\0')
785 break;
786 p = buf;
787 if (line_count == 0) {
788 /* get reply code */
789 get_word(buf1, sizeof(buf1), &p);
790 get_word(buf1, sizeof(buf1), &p);
791 reply->status_code = atoi(buf1);
792 } else {
793 rtsp_parse_line(reply, p);
75e61b0e
MR
794 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
795 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
796 }
797 line_count++;
798 }
115329f1 799
1617ad97 800 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 801 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 802
1617ad97
FB
803 content_length = reply->content_length;
804 if (content_length > 0) {
805 /* leave some room for a trailing '\0' (useful for simple parsing) */
806 content = av_malloc(content_length + 1);
2a42b5c3 807 (void)url_readbuf(rt->rtsp_hd, content, content_length);
1617ad97
FB
808 content[content_length] = '\0';
809 }
810 if (content_ptr)
811 *content_ptr = content;
e2e2e7dd
AB
812 else
813 av_free(content);
1617ad97
FB
814}
815
1617ad97 816
8b1ab7bf
FB
817/* close and free RTSP streams */
818static void rtsp_close_streams(RTSPState *rt)
819{
820 int i;
821 RTSPStream *rtsp_st;
822
823 for(i=0;i<rt->nb_rtsp_streams;i++) {
824 rtsp_st = rt->rtsp_streams[i];
825 if (rtsp_st) {
accc248f
RB
826 if (rtsp_st->tx_ctx) {
827 if (rt->transport == RTSP_TRANSPORT_RDT)
828 ff_rdt_parse_close(rtsp_st->tx_ctx);
829 else
5c918b27 830 rtp_parse_close(rtsp_st->tx_ctx);
accc248f 831 }
8b1ab7bf
FB
832 if (rtsp_st->rtp_handle)
833 url_close(rtsp_st->rtp_handle);
4934884a
RM
834 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
835 rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
8b1ab7bf 836 }
8b1ab7bf
FB
837 }
838 av_free(rt->rtsp_streams);
839}
840
ee0cb67f
RB
841static int
842rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
843{
accc248f 844 RTSPState *rt = s->priv_data;
ee0cb67f
RB
845 AVStream *st = NULL;
846
a6789dca
RB
847 /* open the RTP context */
848 if (rtsp_st->stream_index >= 0)
849 st = s->streams[rtsp_st->stream_index];
850 if (!st)
851 s->ctx_flags |= AVFMTCTX_NOHEADER;
accc248f
RB
852
853 if (rt->transport == RTSP_TRANSPORT_RDT)
e0d1eabf 854 rtsp_st->tx_ctx = ff_rdt_parse_open(s, st->index,
accc248f
RB
855 rtsp_st->dynamic_protocol_context,
856 rtsp_st->dynamic_handler);
857 else
5c918b27
RB
858 rtsp_st->tx_ctx = rtp_parse_open(s, st, rtsp_st->rtp_handle,
859 rtsp_st->sdp_payload_type,
860 &rtsp_st->rtp_payload_data);
a6789dca 861
5465b0d4 862 if (!rtsp_st->tx_ctx) {
a6789dca 863 return AVERROR(ENOMEM);
accc248f 864 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
a6789dca 865 if(rtsp_st->dynamic_handler) {
5465b0d4 866 rtp_parse_set_dynamic_protocol(rtsp_st->tx_ctx,
99a1d191
RB
867 rtsp_st->dynamic_protocol_context,
868 rtsp_st->dynamic_handler);
ee0cb67f 869 }
a6789dca 870 }
ee0cb67f
RB
871
872 return 0;
873}
874
53620bba
RB
875/**
876 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
877 */
878static int
e9dea59f 879make_setup_request (AVFormatContext *s, const char *host, int port,
90abbdba 880 int lower_transport, const char *real_challenge)
1617ad97
FB
881{
882 RTSPState *rt = s->priv_data;
53620bba 883 int j, i, err;
1617ad97 884 RTSPStream *rtsp_st;
53620bba
RB
885 RTSPHeader reply1, *reply = &reply1;
886 char cmd[2048];
e9dea59f
RB
887 const char *trans_pref;
888
119b4668 889 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
890 trans_pref = "x-pn-tng";
891 else
892 trans_pref = "RTP/AVP";
115329f1 893
1617ad97
FB
894 /* for each stream, make the setup request */
895 /* XXX: we assume the same server is used for the control of each
896 RTSP stream */
d1ccf0e0
RD
897
898 for(j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
899 char transport[2048];
900
8b1ab7bf 901 rtsp_st = rt->rtsp_streams[i];
1617ad97 902
1617ad97 903 /* RTP/UDP */
90abbdba 904 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 905 char buf[256];
85fb7b34
FB
906
907 /* first try in specified port range */
d1ccf0e0
RD
908 if (RTSP_RTP_PORT_MIN != 0) {
909 while(j <= RTSP_RTP_PORT_MAX) {
b316aa1a 910 snprintf(buf, sizeof(buf), "rtp://%s?localport=%d", host, j);
ecdcbbf6 911 j += 2; /* we will use two port by rtp stream (rtp and rtcp) */
dbf30963 912 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) {
85fb7b34 913 goto rtp_opened;
d1ccf0e0 914 }
85fb7b34 915 }
1617ad97 916 }
85fb7b34 917
d1ccf0e0
RD
918/* then try on any port
919** if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
920** err = AVERROR_INVALIDDATA;
921** goto fail;
922** }
923*/
85fb7b34
FB
924
925 rtp_opened:
8b1ab7bf 926 port = rtp_get_local_port(rtsp_st->rtp_handle);
0ad306bc 927 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
928 "%s/UDP;", trans_pref);
929 if (rt->server_type != RTSP_SERVER_REAL)
930 av_strlcat(transport, "unicast;", sizeof(transport));
931 av_strlcatf(transport, sizeof(transport),
932 "client_port=%d", port);
119b4668 933 if (rt->transport == RTSP_TRANSPORT_RTP)
e9dea59f 934 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
935 }
936
937 /* RTP/TCP */
90abbdba 938 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
0ad306bc 939 snprintf(transport, sizeof(transport) - 1,
e9dea59f 940 "%s/TCP", trans_pref);
1617ad97
FB
941 }
942
90abbdba 943 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 944 snprintf(transport, sizeof(transport) - 1,
e9dea59f 945 "%s/UDP;multicast", trans_pref);
1617ad97 946 }
2e889ae4 947 if (rt->server_type == RTSP_SERVER_REAL)
e9dea59f 948 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 949 snprintf(cmd, sizeof(cmd),
b6892136
FB
950 "SETUP %s RTSP/1.0\r\n"
951 "Transport: %s\r\n",
1617ad97 952 rtsp_st->control_url, transport);
2e889ae4 953 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
954 char real_res[41], real_csum[9];
955 ff_rdt_calc_response_and_checksum(real_res, real_csum,
956 real_challenge);
957 av_strlcatf(cmd, sizeof(cmd),
958 "If-Match: %s\r\n"
959 "RealChallenge2: %s, sd=%s\r\n",
960 rt->session_id, real_res, real_csum);
961 }
1617ad97 962 rtsp_send_cmd(s, cmd, reply, NULL);
8a8754d8
RB
963 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
964 err = 1;
965 goto fail;
7e6ca34f
RB
966 } else if (reply->status_code != RTSP_STATUS_OK ||
967 reply->nb_transports != 1) {
1617ad97
FB
968 err = AVERROR_INVALIDDATA;
969 goto fail;
970 }
971
972 /* XXX: same protocol for all streams is required */
973 if (i > 0) {
119b4668
RB
974 if (reply->transports[0].lower_transport != rt->lower_transport ||
975 reply->transports[0].transport != rt->transport) {
1617ad97
FB
976 err = AVERROR_INVALIDDATA;
977 goto fail;
978 }
979 } else {
90abbdba 980 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 981 rt->transport = reply->transports[0].transport;
1617ad97
FB
982 }
983
984 /* close RTP connection if not choosen */
90abbdba
RB
985 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
986 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
987 url_close(rtsp_st->rtp_handle);
988 rtsp_st->rtp_handle = NULL;
1617ad97
FB
989 }
990
90abbdba
RB
991 switch(reply->transports[0].lower_transport) {
992 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
993 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
994 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
995 break;
115329f1 996
90abbdba 997 case RTSP_LOWER_TRANSPORT_UDP:
1617ad97
FB
998 {
999 char url[1024];
115329f1 1000
1617ad97 1001 /* XXX: also use address if specified */
115329f1 1002 snprintf(url, sizeof(url), "rtp://%s:%d",
1617ad97 1003 host, reply->transports[0].server_port_min);
8b1ab7bf 1004 if (rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1617ad97
FB
1005 err = AVERROR_INVALIDDATA;
1006 goto fail;
1007 }
1008 }
1009 break;
90abbdba 1010 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1617ad97
FB
1011 {
1012 char url[1024];
d02678ec 1013 struct in_addr in;
1617ad97 1014
d02678ec 1015 in.s_addr = htonl(reply->transports[0].destination);
35b74c3d 1016 snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d",
d02678ec
LB
1017 inet_ntoa(in),
1018 reply->transports[0].port_min,
1019 reply->transports[0].ttl);
dbf30963 1020 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1617ad97
FB
1021 err = AVERROR_INVALIDDATA;
1022 goto fail;
1023 }
1024 }
1025 break;
1026 }
d1ccf0e0 1027
ee0cb67f 1028 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1029 goto fail;
1617ad97
FB
1030 }
1031
2e889ae4 1032 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1033 rt->need_subscription = 1;
1034
53620bba
RB
1035 return 0;
1036
1037fail:
8a8754d8
RB
1038 for (i=0; i<rt->nb_rtsp_streams; i++) {
1039 if (rt->rtsp_streams[i]->rtp_handle) {
1040 url_close(rt->rtsp_streams[i]->rtp_handle);
1041 rt->rtsp_streams[i]->rtp_handle = NULL;
1042 }
1043 }
53620bba
RB
1044 return err;
1045}
1046
1047static int rtsp_read_header(AVFormatContext *s,
1048 AVFormatParameters *ap)
1049{
1050 RTSPState *rt = s->priv_data;
1051 char host[1024], path[1024], tcpname[1024], cmd[2048], *option_list, *option;
1052 URLContext *rtsp_hd;
1053 int port, ret, err;
1054 RTSPHeader reply1, *reply = &reply1;
1055 unsigned char *content = NULL;
90abbdba 1056 int lower_transport_mask = 0;
1cf151e9 1057 char real_challenge[64];
53620bba
RB
1058
1059 /* extract hostname and port */
1060 url_split(NULL, 0, NULL, 0,
1061 host, sizeof(host), &port, path, sizeof(path), s->filename);
1062 if (port < 0)
1063 port = RTSP_DEFAULT_PORT;
1064
1065 /* search for options */
1066 option_list = strchr(path, '?');
1067 if (option_list) {
1068 /* remove the options from the path */
1069 *option_list++ = 0;
1070 while(option_list) {
1071 /* move the option pointer */
1072 option = option_list;
1073 option_list = strchr(option_list, '&');
1074 if (option_list)
1075 *(option_list++) = 0;
1076 /* handle the options */
1077 if (strcmp(option, "udp") == 0)
90abbdba 1078 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP);
53620bba 1079 else if (strcmp(option, "multicast") == 0)
90abbdba 1080 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
53620bba 1081 else if (strcmp(option, "tcp") == 0)
90abbdba 1082 lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP);
53620bba
RB
1083 }
1084 }
1085
90abbdba
RB
1086 if (!lower_transport_mask)
1087 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_LAST) - 1;
53620bba
RB
1088
1089 /* open the tcp connexion */
1090 snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port);
1091 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0)
1092 return AVERROR(EIO);
1093 rt->rtsp_hd = rtsp_hd;
1094 rt->seq = 0;
1095
1cf151e9
RB
1096 /* request options supported by the server; this also detects server type */
1097 for (rt->server_type = RTSP_SERVER_RTP;;) {
1098 snprintf(cmd, sizeof(cmd),
1099 "OPTIONS %s RTSP/1.0\r\n", s->filename);
2e889ae4 1100 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1101 av_strlcat(cmd,
1102 /**
1103 * The following entries are required for proper
1104 * streaming from a Realmedia server. They are
1105 * interdependent in some way although we currently
1106 * don't quite understand how. Values were copied
1107 * from mplayer SVN r23589.
1108 * @param CompanyID is a 16-byte ID in base64
1109 * @param ClientChallenge is a 16-byte ID in hex
1110 */
1111 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1112 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1113 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1114 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1115 sizeof(cmd));
1116 rtsp_send_cmd(s, cmd, reply, NULL);
1117 if (reply->status_code != RTSP_STATUS_OK) {
1118 err = AVERROR_INVALIDDATA;
1119 goto fail;
1120 }
1121
1122 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1123 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1124 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1125 continue;
7a86bafa
RB
1126 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1127 rt->server_type = RTSP_SERVER_WMS;
2e889ae4 1128 } else if (rt->server_type == RTSP_SERVER_REAL) {
1cf151e9
RB
1129 strcpy(real_challenge, reply->real_challenge);
1130 }
1131 break;
1132 }
1133
53620bba
RB
1134 /* describe the stream */
1135 snprintf(cmd, sizeof(cmd),
1136 "DESCRIBE %s RTSP/1.0\r\n"
1137 "Accept: application/sdp\r\n",
1138 s->filename);
2e889ae4 1139 if (rt->server_type == RTSP_SERVER_REAL) {
897ade1b
RB
1140 /**
1141 * The Require: attribute is needed for proper streaming from
1142 * Realmedia servers.
1143 */
1144 av_strlcat(cmd,
1145 "Require: com.real.retain-entity-for-setup\r\n",
1146 sizeof(cmd));
1147 }
53620bba
RB
1148 rtsp_send_cmd(s, cmd, reply, &content);
1149 if (!content) {
1150 err = AVERROR_INVALIDDATA;
1151 goto fail;
1152 }
1153 if (reply->status_code != RTSP_STATUS_OK) {
1154 err = AVERROR_INVALIDDATA;
1155 goto fail;
1156 }
1157
1158 /* now we got the SDP description, we parse it */
1159 ret = sdp_parse(s, (const char *)content);
1160 av_freep(&content);
1161 if (ret < 0) {
1162 err = AVERROR_INVALIDDATA;
1163 goto fail;
1164 }
1165
8a8754d8 1166 do {
90abbdba 1167 int lower_transport = ff_log2_tab[lower_transport_mask & ~(lower_transport_mask - 1)];
8a8754d8 1168
90abbdba 1169 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1170 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1171 real_challenge : NULL);
8a8754d8 1172 if (err < 0)
7e6ca34f 1173 goto fail;
90abbdba
RB
1174 lower_transport_mask &= ~(1 << lower_transport);
1175 if (lower_transport_mask == 0 && err == 1) {
5ee0e139 1176 err = AVERROR(FF_NETERROR(EPROTONOSUPPORT));
8a8754d8
RB
1177 goto fail;
1178 }
1179 } while (err);
53620bba 1180
ff762d6e
FB
1181 rt->state = RTSP_STATE_IDLE;
1182 rt->seek_timestamp = 0; /* default is to start stream at position
1183 zero */
c04c3282 1184 if (ap->initial_pause) {
ff762d6e
FB
1185 /* do not start immediately */
1186 } else {
1187 if (rtsp_read_play(s) < 0) {
1188 err = AVERROR_INVALIDDATA;
1617ad97
FB
1189 goto fail;
1190 }
1191 }
1617ad97
FB
1192 return 0;
1193 fail:
8b1ab7bf 1194 rtsp_close_streams(rt);
1617ad97
FB
1195 av_freep(&content);
1196 url_close(rt->rtsp_hd);
1197 return err;
1198}
1199
8b1ab7bf
FB
1200static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1201 uint8_t *buf, int buf_size)
1617ad97
FB
1202{
1203 RTSPState *rt = s->priv_data;
b6892136 1204 int id, len, i, ret;
1617ad97 1205 RTSPStream *rtsp_st;
1617ad97 1206
b6892136
FB
1207#ifdef DEBUG_RTP_TCP
1208 printf("tcp_read_packet:\n");
1209#endif
1617ad97
FB
1210 redo:
1211 for(;;) {
2a42b5c3 1212 ret = url_readbuf(rt->rtsp_hd, buf, 1);
b6892136
FB
1213#ifdef DEBUG_RTP_TCP
1214 printf("ret=%d c=%02x [%c]\n", ret, buf[0], buf[0]);
1215#endif
1216 if (ret != 1)
8b1ab7bf 1217 return -1;
b6892136 1218 if (buf[0] == '$')
1617ad97
FB
1219 break;
1220 }
2a42b5c3 1221 ret = url_readbuf(rt->rtsp_hd, buf, 3);
b6892136 1222 if (ret != 3)
8b1ab7bf 1223 return -1;
b6892136 1224 id = buf[0];
80fb8234 1225 len = AV_RB16(buf + 1);
b6892136
FB
1226#ifdef DEBUG_RTP_TCP
1227 printf("id=%d len=%d\n", id, len);
1228#endif
8b1ab7bf 1229 if (len > buf_size || len < 12)
1617ad97
FB
1230 goto redo;
1231 /* get the data */
2a42b5c3 1232 ret = url_readbuf(rt->rtsp_hd, buf, len);
b6892136 1233 if (ret != len)
8b1ab7bf 1234 return -1;
985b05d3 1235 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1236 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1237 return -1;
115329f1 1238
1617ad97 1239 /* find the matching stream */
8b1ab7bf
FB
1240 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1241 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1242 if (id >= rtsp_st->interleaved_min &&
1243 id <= rtsp_st->interleaved_max)
1617ad97
FB
1244 goto found;
1245 }
1246 goto redo;
1247 found:
8b1ab7bf
FB
1248 *prtsp_st = rtsp_st;
1249 return len;
1617ad97
FB
1250}
1251
115329f1 1252static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
8b1ab7bf 1253 uint8_t *buf, int buf_size)
1617ad97 1254{
8b1ab7bf 1255 RTSPState *rt = s->priv_data;
1617ad97
FB
1256 RTSPStream *rtsp_st;
1257 fd_set rfds;
1258 int fd1, fd2, fd_max, n, i, ret;
1617ad97
FB
1259 struct timeval tv;
1260
1261 for(;;) {
b7b8fc34 1262 if (url_interrupt_cb())
a960a1e0 1263 return AVERROR(EINTR);
1617ad97
FB
1264 FD_ZERO(&rfds);
1265 fd_max = -1;
8b1ab7bf
FB
1266 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1267 rtsp_st = rt->rtsp_streams[i];
1617ad97 1268 /* currently, we cannot probe RTCP handle because of blocking restrictions */
8b1ab7bf 1269 rtp_get_file_handles(rtsp_st->rtp_handle, &fd1, &fd2);
1617ad97
FB
1270 if (fd1 > fd_max)
1271 fd_max = fd1;
1272 FD_SET(fd1, &rfds);
1273 }
1617ad97 1274 tv.tv_sec = 0;
b7b8fc34 1275 tv.tv_usec = 100 * 1000;
1617ad97
FB
1276 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1277 if (n > 0) {
8b1ab7bf
FB
1278 for(i = 0; i < rt->nb_rtsp_streams; i++) {
1279 rtsp_st = rt->rtsp_streams[i];
1280 rtp_get_file_handles(rtsp_st->rtp_handle, &fd1, &fd2);
1617ad97 1281 if (FD_ISSET(fd1, &rfds)) {
8b1ab7bf
FB
1282 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1283 if (ret > 0) {
1284 *prtsp_st = rtsp_st;
1617ad97
FB
1285 return ret;
1286 }
1287 }
1288 }
1289 }
1290 }
1291}
1292
1293static int rtsp_read_packet(AVFormatContext *s,
1294 AVPacket *pkt)
1295{
1296 RTSPState *rt = s->priv_data;
8b1ab7bf
FB
1297 RTSPStream *rtsp_st;
1298 int ret, len;
e49906c3 1299 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
8b1ab7bf 1300
572c6a38 1301 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b
RB
1302 int i;
1303 RTSPHeader reply1, *reply = &reply1;
572c6a38 1304 enum AVDiscard cache[MAX_STREAMS];
1256d16b
RB
1305 char cmd[1024];
1306
572c6a38
RB
1307 for (i = 0; i < s->nb_streams; i++)
1308 cache[i] = s->streams[i]->discard;
1309
1310 if (!rt->need_subscription) {
1311 if (memcmp (cache, rt->real_setup_cache,
1312 sizeof(enum AVDiscard) * s->nb_streams)) {
1313 av_strlcatf(cmd, sizeof(cmd),
1314 "SET_PARAMETER %s RTSP/1.0\r\n"
1315 "Unsubscribe: %s\r\n",
1316 s->filename, rt->last_subscription);
1317 rtsp_send_cmd(s, cmd, reply, NULL);
1318 if (reply->status_code != RTSP_STATUS_OK)
1319 return AVERROR_INVALIDDATA;
1320 rt->need_subscription = 1;
1321 }
1256d16b 1322 }
1256d16b 1323
572c6a38
RB
1324 if (rt->need_subscription) {
1325 int r, rule_nr, first = 1;
1326
1327 memcpy(rt->real_setup_cache, cache,
1328 sizeof(enum AVDiscard) * s->nb_streams);
1329 rt->last_subscription[0] = 0;
1330
1331 snprintf(cmd, sizeof(cmd),
1332 "SET_PARAMETER %s RTSP/1.0\r\n"
1333 "Subscribe: ",
1334 s->filename);
1335 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1336 rule_nr = 0;
1337 for (r = 0; r < s->nb_streams; r++) {
1338 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1339 if (s->streams[r]->discard != AVDISCARD_ALL) {
1340 if (!first)
1341 av_strlcat(rt->last_subscription, ",",
1342 sizeof(rt->last_subscription));
1343 ff_rdt_subscribe_rule(
1344 rt->last_subscription,
1345 sizeof(rt->last_subscription), i, rule_nr);
1346 first = 0;
1347 }
1348 rule_nr++;
1349 }
1350 }
1351 }
1352 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
1353 rtsp_send_cmd(s, cmd, reply, NULL);
1354 if (reply->status_code != RTSP_STATUS_OK)
1355 return AVERROR_INVALIDDATA;
1356 rt->need_subscription = 0;
1357
1358 if (rt->state == RTSP_STATE_PLAYING)
1359 rtsp_read_play (s);
1360 }
1256d16b
RB
1361 }
1362
8b1ab7bf 1363 /* get next frames from the same RTP packet */
5465b0d4 1364 if (rt->cur_tx) {
119b4668 1365 if (rt->transport == RTSP_TRANSPORT_RDT)
5465b0d4 1366 ret = ff_rdt_parse_packet(rt->cur_tx, pkt, NULL, 0);
4fce284c 1367 else
5465b0d4 1368 ret = rtp_parse_packet(rt->cur_tx, pkt, NULL, 0);
8b1ab7bf 1369 if (ret == 0) {
5465b0d4 1370 rt->cur_tx = NULL;
8b1ab7bf
FB
1371 return 0;
1372 } else if (ret == 1) {
1373 return 0;
1374 } else {
5465b0d4 1375 rt->cur_tx = NULL;
8b1ab7bf
FB
1376 }
1377 }
1617ad97 1378
8b1ab7bf
FB
1379 /* read next RTP packet */
1380 redo:
90abbdba 1381 switch(rt->lower_transport) {
1617ad97 1382 default:
90abbdba 1383 case RTSP_LOWER_TRANSPORT_TCP:
8b1ab7bf 1384 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1617ad97 1385 break;
90abbdba
RB
1386 case RTSP_LOWER_TRANSPORT_UDP:
1387 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
8b1ab7bf 1388 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
6ff1f615 1389 if (len >=0 && rtsp_st->tx_ctx && rt->transport == RTSP_TRANSPORT_RTP)
5465b0d4 1390 rtp_check_and_send_back_rr(rtsp_st->tx_ctx, len);
1617ad97
FB
1391 break;
1392 }
8b1ab7bf 1393 if (len < 0)
489b0d4d 1394 return len;
119b4668 1395 if (rt->transport == RTSP_TRANSPORT_RDT)
5465b0d4 1396 ret = ff_rdt_parse_packet(rtsp_st->tx_ctx, pkt, buf, len);
4fce284c 1397 else
5465b0d4 1398 ret = rtp_parse_packet(rtsp_st->tx_ctx, pkt, buf, len);
8b1ab7bf
FB
1399 if (ret < 0)
1400 goto redo;
1401 if (ret == 1) {
1402 /* more packets may follow, so we save the RTP context */
5465b0d4 1403 rt->cur_tx = rtsp_st->tx_ctx;
8b1ab7bf
FB
1404 }
1405 return 0;
1617ad97
FB
1406}
1407
ff762d6e 1408static int rtsp_read_play(AVFormatContext *s)
b7b8fc34 1409{
ff762d6e 1410 RTSPState *rt = s->priv_data;
b7b8fc34
FB
1411 RTSPHeader reply1, *reply = &reply1;
1412 char cmd[1024];
1413
bc874dae 1414 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
ff762d6e 1415
2e889ae4 1416 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1417 if (rt->state == RTSP_STATE_PAUSED) {
1418 snprintf(cmd, sizeof(cmd),
1419 "PLAY %s RTSP/1.0\r\n",
1420 s->filename);
1421 } else {
1422 snprintf(cmd, sizeof(cmd),
1423 "PLAY %s RTSP/1.0\r\n"
1424 "Range: npt=%0.3f-\r\n",
1425 s->filename,
1426 (double)rt->seek_timestamp / AV_TIME_BASE);
1427 }
1428 rtsp_send_cmd(s, cmd, reply, NULL);
1429 if (reply->status_code != RTSP_STATUS_OK) {
1430 return -1;
1431 }
1256d16b 1432 }
5f86057f
RB
1433 rt->state = RTSP_STATE_PLAYING;
1434 return 0;
b7b8fc34
FB
1435}
1436
ff762d6e
FB
1437/* pause the stream */
1438static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1439{
ff762d6e 1440 RTSPState *rt = s->priv_data;
b7b8fc34
FB
1441 RTSPHeader reply1, *reply = &reply1;
1442 char cmd[1024];
1443
b7b8fc34 1444 rt = s->priv_data;
115329f1 1445
ff762d6e
FB
1446 if (rt->state != RTSP_STATE_PLAYING)
1447 return 0;
2e889ae4 1448 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
99b2ac07
RB
1449 snprintf(cmd, sizeof(cmd),
1450 "PAUSE %s RTSP/1.0\r\n",
1451 s->filename);
1452 rtsp_send_cmd(s, cmd, reply, NULL);
1453 if (reply->status_code != RTSP_STATUS_OK) {
1454 return -1;
1455 }
1256d16b 1456 }
5f86057f
RB
1457 rt->state = RTSP_STATE_PAUSED;
1458 return 0;
b7b8fc34
FB
1459}
1460
115329f1 1461static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1462 int64_t timestamp, int flags)
ff762d6e
FB
1463{
1464 RTSPState *rt = s->priv_data;
115329f1 1465
50755217 1466 rt->seek_timestamp = av_rescale_q(timestamp, s->streams[stream_index]->time_base, AV_TIME_BASE_Q);
ff762d6e
FB
1467 switch(rt->state) {
1468 default:
1469 case RTSP_STATE_IDLE:
1470 break;
1471 case RTSP_STATE_PLAYING:
1472 if (rtsp_read_play(s) != 0)
1473 return -1;
1474 break;
1475 case RTSP_STATE_PAUSED:
1476 rt->state = RTSP_STATE_IDLE;
1477 break;
1478 }
1479 return 0;
1480}
1481
1617ad97
FB
1482static int rtsp_read_close(AVFormatContext *s)
1483{
1484 RTSPState *rt = s->priv_data;
1617ad97 1485 RTSPHeader reply1, *reply = &reply1;
1617ad97
FB
1486 char cmd[1024];
1487
b6892136 1488#if 0
1617ad97 1489 /* NOTE: it is valid to flush the buffer here */
90abbdba 1490 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1491 url_fclose(&rt->rtsp_gb);
1492 }
b6892136 1493#endif
115329f1 1494 snprintf(cmd, sizeof(cmd),
b6892136 1495 "TEARDOWN %s RTSP/1.0\r\n",
1617ad97
FB
1496 s->filename);
1497 rtsp_send_cmd(s, cmd, reply, NULL);
1498
8b1ab7bf 1499 rtsp_close_streams(rt);
1617ad97
FB
1500 url_close(rt->rtsp_hd);
1501 return 0;
1502}
1503
96862926 1504#ifdef CONFIG_RTSP_DEMUXER
d2a067d1 1505AVInputFormat rtsp_demuxer = {
1617ad97 1506 "rtsp",
bde15e74 1507 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1508 sizeof(RTSPState),
1509 rtsp_probe,
1510 rtsp_read_header,
1511 rtsp_read_packet,
1512 rtsp_read_close,
ff762d6e 1513 rtsp_read_seek,
bb76a117 1514 .flags = AVFMT_NOFILE,
ff762d6e
FB
1515 .read_play = rtsp_read_play,
1516 .read_pause = rtsp_read_pause,
1617ad97 1517};
96862926 1518#endif
1617ad97 1519
cb1fdc61 1520static int sdp_probe(AVProbeData *p1)
93ced3e8 1521{
0e1ceacd 1522 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1523
1524 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1525 while (p < p_end && *p != '\0') {
f7d78f36 1526 if (p + sizeof("c=IN IP4") - 1 < p_end && av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1527 return AVPROBE_SCORE_MAX / 2;
0e1ceacd
MN
1528
1529 while(p < p_end - 1 && *p != '\n') p++;
1530 if (++p >= p_end)
cb1fdc61 1531 break;
cb1fdc61
FB
1532 if (*p == '\r')
1533 p++;
1534 }
93ced3e8
FB
1535 return 0;
1536}
1537
1538#define SDP_MAX_SIZE 8192
1539
1540static int sdp_read_header(AVFormatContext *s,
1541 AVFormatParameters *ap)
1542{
8b1ab7bf 1543 RTSPState *rt = s->priv_data;
93ced3e8
FB
1544 RTSPStream *rtsp_st;
1545 int size, i, err;
1546 char *content;
1547 char url[1024];
1548
1549 /* read the whole sdp file */
1550 /* XXX: better loading */
1551 content = av_malloc(SDP_MAX_SIZE);
899681cd 1552 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1553 if (size <= 0) {
1554 av_free(content);
1555 return AVERROR_INVALIDDATA;
1556 }
1557 content[size] ='\0';
1558
1559 sdp_parse(s, content);
1560 av_free(content);
1561
1562 /* open each RTP stream */
8b1ab7bf
FB
1563 for(i=0;i<rt->nb_rtsp_streams;i++) {
1564 rtsp_st = rt->rtsp_streams[i];
115329f1 1565
d2bf42be 1566 snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d",
115329f1 1567 inet_ntoa(rtsp_st->sdp_ip),
93ced3e8 1568 rtsp_st->sdp_port,
d2bf42be 1569 rtsp_st->sdp_port,
93ced3e8 1570 rtsp_st->sdp_ttl);
dbf30963 1571 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1572 err = AVERROR_INVALIDDATA;
1573 goto fail;
1574 }
ee0cb67f 1575 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1576 goto fail;
93ced3e8
FB
1577 }
1578 return 0;
1579 fail:
8b1ab7bf 1580 rtsp_close_streams(rt);
93ced3e8
FB
1581 return err;
1582}
1583
1584static int sdp_read_packet(AVFormatContext *s,
1585 AVPacket *pkt)
1586{
8b1ab7bf 1587 return rtsp_read_packet(s, pkt);
93ced3e8
FB
1588}
1589
1590static int sdp_read_close(AVFormatContext *s)
1591{
8b1ab7bf
FB
1592 RTSPState *rt = s->priv_data;
1593 rtsp_close_streams(rt);
93ced3e8
FB
1594 return 0;
1595}
1596
ff70e601
MR
1597#ifdef CONFIG_SDP_DEMUXER
1598AVInputFormat sdp_demuxer = {
93ced3e8 1599 "sdp",
bde15e74 1600 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1601 sizeof(RTSPState),
1602 sdp_probe,
1603 sdp_read_header,
1604 sdp_read_packet,
1605 sdp_read_close,
1606};
ff70e601 1607#endif
93ced3e8 1608
e7047005 1609#ifdef CONFIG_REDIR_DEMUXER
1617ad97
FB
1610/* dummy redirector format (used directly in av_open_input_file now) */
1611static int redir_probe(AVProbeData *pd)
1612{
1613 const char *p;
1614 p = pd->buf;
1615 while (redir_isspace(*p))
1616 p++;
f7d78f36
MR
1617 if (av_strstart(p, "http://", NULL) ||
1618 av_strstart(p, "rtsp://", NULL))
1617ad97
FB
1619 return AVPROBE_SCORE_MAX;
1620 return 0;
1621}
1622
e8acf0ed 1623static int redir_read_header(AVFormatContext *s, AVFormatParameters *ap)
1617ad97
FB
1624{
1625 char buf[4096], *q;
1626 int c;
1627 AVFormatContext *ic = NULL;
e8acf0ed 1628 ByteIOContext *f = s->pb;
1617ad97
FB
1629
1630 /* parse each URL and try to open it */
1631 c = url_fgetc(f);
1632 while (c != URL_EOF) {
1633 /* skip spaces */
1634 for(;;) {
1635 if (!redir_isspace(c))
1636 break;
1637 c = url_fgetc(f);
1638 }
1639 if (c == URL_EOF)
1640 break;
1641 /* record url */
1642 q = buf;
1643 for(;;) {
1644 if (c == URL_EOF || redir_isspace(c))
1645 break;
1646 if ((q - buf) < sizeof(buf) - 1)
1647 *q++ = c;
1648 c = url_fgetc(f);
1649 }
1650 *q = '\0';
1651 //printf("URL='%s'\n", buf);
1652 /* try to open the media file */
1653 if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0)
1654 break;
1655 }
1617ad97 1656 if (!ic)
6f3e0b21 1657 return AVERROR(EIO);
e8acf0ed
LA
1658
1659 *s = *ic;
1660 url_fclose(f);
1661
1662 return 0;
1617ad97
FB
1663}
1664
d2a067d1 1665AVInputFormat redir_demuxer = {
1617ad97 1666 "redir",
bde15e74 1667 NULL_IF_CONFIG_SMALL("Redirector format"),
1617ad97
FB
1668 0,
1669 redir_probe,
e8acf0ed 1670 redir_read_header,
1617ad97
FB
1671 NULL,
1672 NULL,
1673};
e7047005 1674#endif