rtsp: Initialize the media_type_mask in the rtp guessing demuxer
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
2912e87a 5 * This file is part of Libav.
b78e7197 6 *
2912e87a 7 * Libav 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 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
1617ad97
FB
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
2912e87a 18 * License along with Libav; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1617ad97 20 */
245976da 21
f9337897 22#include "libavutil/base64.h"
245976da 23#include "libavutil/avstring.h"
6a5d31ac 24#include "libavutil/intreadwrite.h"
0ebcdf5c 25#include "libavutil/mathematics.h"
9fcae973 26#include "libavutil/parseutils.h"
f5d33f52 27#include "libavutil/random_seed.h"
d2d67e42 28#include "libavutil/dict.h"
d450cc4f 29#include "libavutil/opt.h"
1617ad97 30#include "avformat.h"
e731b8d8 31#include "avio_internal.h"
1617ad97 32
db0ed93e 33#include <sys/time.h>
a8475bbd
LB
34#if HAVE_POLL_H
35#include <poll.h>
6ad1c9c9 36#endif
e4a9e3cc 37#include "internal.h"
42572ef5 38#include "network.h"
cbfa66d0 39#include "os_support.h"
f5d33f52 40#include "http.h"
c971ff19 41#include "rtsp.h"
1617ad97 42
302879cb 43#include "rtpdec.h"
e9dea59f 44#include "rdt.h"
965a3ddb 45#include "rtpdec_formats.h"
a493f80a 46#include "rtpenc_chain.h"
5652bb94 47#include "url.h"
17fff881 48#include "rtpenc.h"
4934884a 49
1617ad97
FB
50//#define DEBUG
51
a8475bbd 52/* Timeout values for socket poll, in ms,
9cba6f5f 53 * and read_packet(), in seconds */
a8475bbd 54#define POLL_TIMEOUT_MS 100
9cba6f5f 55#define READ_PACKET_TIMEOUT_S 10
a8475bbd 56#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 57#define SDP_MAX_SIZE 16384
96a7c975 58#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
9cba6f5f 59
2c9aa024
MS
60#define OFFSET(x) offsetof(RTSPState, x)
61#define DEC AV_OPT_FLAG_DECODING_PARAM
eca4850c 62#define ENC AV_OPT_FLAG_ENCODING_PARAM
3a6765fb
MS
63
64#define RTSP_FLAG_OPTS(name, longname) \
65 { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
66 { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" }
67
f011fcd6
JB
68#define RTSP_MEDIATYPE_OPTS(name, longname) \
69 { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
70 { "video", "Video", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
71 { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
72 { "data", "Data", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }
73
17fff881 74const AVOption ff_rtsp_options[] = {
2c9aa024 75 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {0}, 0, 1, DEC },
17fff881 76 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
eca4850c
MS
77 { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
78 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
79 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
80 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
81 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {(1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
3a6765fb 82 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
f011fcd6 83 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
17fff881
MS
84 { NULL },
85};
86
51369f28
MS
87static const AVOption sdp_options[] = {
88 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
f011fcd6 89 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
51369f28
MS
90 { NULL },
91};
92
93static const AVOption rtp_options[] = {
94 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
95 { NULL },
96};
97
1ef36a70
RB
98static void get_word_until_chars(char *buf, int buf_size,
99 const char *sep, const char **pp)
1617ad97
FB
100{
101 const char *p;
102 char *q;
103
104 p = *pp;
30619e6e 105 p += strspn(p, SPACE_CHARS);
1617ad97
FB
106 q = buf;
107 while (!strchr(sep, *p) && *p != '\0') {
108 if ((q - buf) < buf_size - 1)
109 *q++ = *p;
110 p++;
111 }
112 if (buf_size > 0)
113 *q = '\0';
114 *pp = p;
115}
116
1ef36a70
RB
117static void get_word_sep(char *buf, int buf_size, const char *sep,
118 const char **pp)
1617ad97 119{
1ef36a70
RB
120 if (**pp == '/') (*pp)++;
121 get_word_until_chars(buf, buf_size, sep, pp);
122}
1617ad97 123
1ef36a70
RB
124static void get_word(char *buf, int buf_size, const char **pp)
125{
126 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
127}
128
8bf0f969
MS
129/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
130 * and end time.
131 * Used for seeking in the rtp stream.
132 */
133static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
134{
135 char buf[256];
136
137 p += strspn(p, SPACE_CHARS);
138 if (!av_stristart(p, "npt=", &p))
139 return;
140
141 *start = AV_NOPTS_VALUE;
142 *end = AV_NOPTS_VALUE;
143
144 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 145 av_parse_time(start, buf, 1);
8bf0f969
MS
146 if (*p == '-') {
147 p++;
148 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 149 av_parse_time(end, buf, 1);
8bf0f969
MS
150 }
151// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
152// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
153}
154
155static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
156{
157 struct addrinfo hints, *ai = NULL;
158 memset(&hints, 0, sizeof(hints));
159 hints.ai_flags = AI_NUMERICHOST;
160 if (getaddrinfo(buf, NULL, &hints, &ai))
161 return -1;
162 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
163 freeaddrinfo(ai);
164 return 0;
165}
166
44b70ce5 167#if CONFIG_RTPDEC
003eb642
MS
168static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
169 RTSPStream *rtsp_st, AVCodecContext *codec)
170{
171 if (!handler)
172 return;
173 codec->codec_id = handler->codec_id;
174 rtsp_st->dynamic_handler = handler;
4b3dc857 175 if (handler->alloc) {
9261e6cf 176 rtsp_st->dynamic_protocol_context = handler->alloc();
4b3dc857
MS
177 if (!rtsp_st->dynamic_protocol_context)
178 rtsp_st->dynamic_handler = NULL;
179 }
003eb642
MS
180}
181
c8965800 182/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 183static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 184 AVStream *st, RTSPStream *rtsp_st,
c8965800 185 int payload_type, const char *p)
93ced3e8 186{
86b6e387 187 AVCodecContext *codec = st->codec;
93ced3e8 188 char buf[256];
d1ccf0e0
RD
189 int i;
190 AVCodec *c;
7b49ce2e 191 const char *c_name;
93ced3e8 192
d1ccf0e0 193 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
194 * see if we can handle this kind of payload.
195 * The space should normally not be there but some Real streams or
196 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
197 * have a trailing space. */
198 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 199 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
200 RTPDynamicProtocolHandler *handler =
201 ff_rtp_handler_find_by_name(buf, codec->codec_type);
202 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
203 /* If no dynamic handler was found, check with the list of standard
204 * allocated types, if such a stream for some reason happens to
205 * use a private payload type. This isn't handled in rtpdec.c, since
206 * the format name from the rtpmap line never is passed into rtpdec. */
207 if (!rtsp_st->dynamic_handler)
208 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 209 } else {
c8965800
RB
210 /* We are in a standard case
211 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 212 /* search into AVRtpPayloadTypes[] */
7ed19d7f 213 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
214 }
215
216 c = avcodec_find_decoder(codec->codec_id);
217 if (c && c->name)
7b49ce2e 218 c_name = c->name;
d1ccf0e0 219 else
170870b7 220 c_name = "(null)";
d1ccf0e0 221
7515ed0c
RB
222 get_word_sep(buf, sizeof(buf), "/", &p);
223 i = atoi(buf);
224 switch (codec->codec_type) {
72415b2a 225 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
226 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
227 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
228 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
229 if (i > 0) {
230 codec->sample_rate = i;
c3f9ebf7 231 avpriv_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
232 get_word_sep(buf, sizeof(buf), "/", &p);
233 i = atoi(buf);
234 if (i > 0)
235 codec->channels = i;
236 // TODO: there is a bug here; if it is a mono stream, and
237 // less than 22000Hz, faad upconverts to stereo and twice
238 // the frequency. No problem, but the sample rate is being
239 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 240 }
7515ed0c
RB
241 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
242 codec->sample_rate);
243 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
244 codec->channels);
245 break;
72415b2a 246 case AVMEDIA_TYPE_VIDEO:
7515ed0c 247 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387 248 if (i > 0)
c3f9ebf7 249 avpriv_set_pts_info(st, 32, 1, i);
7515ed0c
RB
250 break;
251 default:
252 break;
253 }
25836606
MS
254 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init)
255 rtsp_st->dynamic_handler->init(s, st->index,
256 rtsp_st->dynamic_protocol_context);
7515ed0c 257 return 0;
93ced3e8
FB
258}
259
c2bfd816 260/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
261 * is broken out as a function because it is used in rtp_h264.c, which is
262 * forthcoming. */
3307e6ea 263int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 264 char *value, int value_size)
d0deedcb 265{
30619e6e 266 *p += strspn(*p, SPACE_CHARS);
c8965800 267 if (**p) {
d0deedcb
RM
268 get_word_sep(attr, attr_size, "=", p);
269 if (**p == '=')
270 (*p)++;
271 get_word_sep(value, value_size, ";", p);
272 if (**p == ';')
273 (*p)++;
274 return 1;
275 }
276 return 0;
277}
278
93ced3e8
FB
279typedef struct SDPParseState {
280 /* SDP only */
3fbd12d1 281 struct sockaddr_storage default_ip;
c8965800
RB
282 int default_ttl;
283 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
284} SDPParseState;
285
286static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
287 int letter, const char *buf)
288{
8b1ab7bf 289 RTSPState *rt = s->priv_data;
1617ad97
FB
290 char buf1[64], st_type[64];
291 const char *p;
72415b2a 292 enum AVMediaType codec_type;
fb65d2ca 293 int payload_type, i;
1617ad97
FB
294 AVStream *st;
295 RTSPStream *rtsp_st;
3fbd12d1 296 struct sockaddr_storage sdp_ip;
93ced3e8
FB
297 int ttl;
298
dfd2a005 299 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
300
301 p = buf;
cb760a47
RB
302 if (s1->skip_media && letter != 'm')
303 return;
c8965800 304 switch (letter) {
93ced3e8
FB
305 case 'c':
306 get_word(buf1, sizeof(buf1), &p);
307 if (strcmp(buf1, "IN") != 0)
308 return;
309 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 310 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
311 return;
312 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 313 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
314 return;
315 ttl = 16;
316 if (*p == '/') {
317 p++;
318 get_word_sep(buf1, sizeof(buf1), "/", &p);
319 ttl = atoi(buf1);
320 }
321 if (s->nb_streams == 0) {
322 s1->default_ip = sdp_ip;
323 s1->default_ttl = ttl;
324 } else {
d9c0510e 325 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
326 rtsp_st->sdp_ip = sdp_ip;
327 rtsp_st->sdp_ttl = ttl;
328 }
329 break;
1617ad97 330 case 's':
d2d67e42 331 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
332 break;
333 case 'i':
334 if (s->nb_streams == 0) {
d2d67e42 335 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
336 break;
337 }
338 break;
339 case 'm':
340 /* new stream */
cb760a47 341 s1->skip_media = 0;
f011fcd6 342 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
343 get_word(st_type, sizeof(st_type), &p);
344 if (!strcmp(st_type, "audio")) {
72415b2a 345 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 346 } else if (!strcmp(st_type, "video")) {
72415b2a 347 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 348 } else if (!strcmp(st_type, "application")) {
72415b2a 349 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
350 }
351 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 352 s1->skip_media = 1;
1617ad97
FB
353 return;
354 }
1617ad97
FB
355 rtsp_st = av_mallocz(sizeof(RTSPStream));
356 if (!rtsp_st)
357 return;
8b1ab7bf
FB
358 rtsp_st->stream_index = -1;
359 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
360
361 rtsp_st->sdp_ip = s1->default_ip;
362 rtsp_st->sdp_ttl = s1->default_ttl;
363
93ced3e8
FB
364 get_word(buf1, sizeof(buf1), &p); /* port */
365 rtsp_st->sdp_port = atoi(buf1);
366
367 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 368
93ced3e8
FB
369 /* XXX: handle list of formats */
370 get_word(buf1, sizeof(buf1), &p); /* format list */
371 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 372
7ed19d7f 373 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
374 /* no corresponding stream */
375 } else {
84ad31ff 376 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
377 if (!st)
378 return;
84ad31ff 379 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 380 rtsp_st->stream_index = st->index;
01f4895c 381 st->codec->codec_type = codec_type;
d1ccf0e0 382 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 383 RTPDynamicProtocolHandler *handler;
8b1ab7bf 384 /* if standard payload type, we can find the codec right now */
bf6d9818 385 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
386 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
387 st->codec->sample_rate > 0)
c3f9ebf7 388 avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
389 /* Even static payload types may need a custom depacketizer */
390 handler = ff_rtp_handler_find_by_id(
391 rtsp_st->sdp_payload_type, st->codec->codec_type);
392 init_rtp_handler(handler, rtsp_st, st->codec);
25836606
MS
393 if (handler && handler->init)
394 handler->init(s, st->index,
395 rtsp_st->dynamic_protocol_context);
8b1ab7bf
FB
396 }
397 }
1617ad97 398 /* put a default control url */
00eb13e0 399 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 400 sizeof(rtsp_st->control_url));
1617ad97
FB
401 break;
402 case 'a':
00eb13e0
AS
403 if (av_strstart(p, "control:", &p)) {
404 if (s->nb_streams == 0) {
405 if (!strncmp(p, "rtsp://", 7))
406 av_strlcpy(rt->control_uri, p,
407 sizeof(rt->control_uri));
408 } else {
0b6a7ff4
MS
409 char proto[32];
410 /* get the control url */
d9c0510e 411 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 412
0b6a7ff4
MS
413 /* XXX: may need to add full url resolution */
414 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
415 NULL, NULL, 0, p);
416 if (proto[0] == '\0') {
417 /* relative control URL */
418 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
419 av_strlcat(rtsp_st->control_url, "/",
420 sizeof(rtsp_st->control_url));
421 av_strlcat(rtsp_st->control_url, p,
422 sizeof(rtsp_st->control_url));
423 } else
424 av_strlcpy(rtsp_st->control_url, p,
425 sizeof(rtsp_st->control_url));
00eb13e0 426 }
83d14c85 427 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 428 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 429 get_word(buf1, sizeof(buf1), &p);
93ced3e8 430 payload_type = atoi(buf1);
83d14c85 431 st = s->streams[s->nb_streams - 1];
d9c0510e 432 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
86b6e387 433 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
434 } else if (av_strstart(p, "fmtp:", &p) ||
435 av_strstart(p, "framesize:", &p)) {
93ced3e8 436 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
437 // let dynamic protocol handlers have a stab at the line.
438 get_word(buf1, sizeof(buf1), &p);
439 payload_type = atoi(buf1);
d9c0510e
MS
440 for (i = 0; i < rt->nb_rtsp_streams; i++) {
441 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
442 if (rtsp_st->sdp_payload_type == payload_type &&
443 rtsp_st->dynamic_handler &&
444 rtsp_st->dynamic_handler->parse_sdp_a_line)
445 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
446 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 447 }
c8965800 448 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
449 int64_t start, end;
450
451 // this is so that seeking on a streamed file can work.
452 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
453 s->start_time = start;
454 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
455 s->duration = (end == AV_NOPTS_VALUE) ?
456 AV_NOPTS_VALUE : end - start;
119b4668
RB
457 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
458 if (atoi(p) == 1)
459 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
460 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
461 s->nb_streams > 0) {
462 st = s->streams[s->nb_streams - 1];
463 st->codec->sample_rate = atoi(p);
1a30d541
RB
464 } else {
465 if (rt->server_type == RTSP_SERVER_WMS)
466 ff_wms_parse_sdp_a_line(s, p);
467 if (s->nb_streams > 0) {
c4a3d032
RB
468 if (rt->server_type == RTSP_SERVER_REAL)
469 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
470
d9c0510e 471 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
c4a3d032
RB
472 if (rtsp_st->dynamic_handler &&
473 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
474 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
475 s->nb_streams - 1,
c4a3d032 476 rtsp_st->dynamic_protocol_context, buf);
1a30d541 477 }
1617ad97
FB
478 }
479 break;
480 }
481}
482
0526c6f7 483int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 484{
a8475bbd 485 RTSPState *rt = s->priv_data;
1617ad97
FB
486 const char *p;
487 int letter;
9211bcdd
RB
488 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
489 * contain long SDP lines containing complete ASF Headers (several
490 * kB) or arrays of MDPR (RM stream descriptor) headers plus
491 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
492 * buffer is large.
493 *
afcea58c
JA
494 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
495 * in rtpdec_xiph.c. */
373afbaf 496 char buf[16384], *q;
93ced3e8 497 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 498
93ced3e8 499 memset(s1, 0, sizeof(SDPParseState));
1617ad97 500 p = content;
c8965800 501 for (;;) {
30619e6e 502 p += strspn(p, SPACE_CHARS);
1617ad97
FB
503 letter = *p;
504 if (letter == '\0')
505 break;
506 p++;
507 if (*p != '=')
508 goto next_line;
509 p++;
510 /* get the content */
511 q = buf;
b6892136 512 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
513 if ((q - buf) < sizeof(buf) - 1)
514 *q++ = *p;
515 p++;
516 }
517 *q = '\0';
93ced3e8 518 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
519 next_line:
520 while (*p != '\n' && *p != '\0')
521 p++;
522 if (*p == '\n')
523 p++;
524 }
a8475bbd
LB
525 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
526 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
527 return 0;
528}
44b70ce5 529#endif /* CONFIG_RTPDEC */
1617ad97 530
93e7490e
MS
531void ff_rtsp_undo_setup(AVFormatContext *s)
532{
533 RTSPState *rt = s->priv_data;
534 int i;
535
536 for (i = 0; i < rt->nb_rtsp_streams; i++) {
537 RTSPStream *rtsp_st = rt->rtsp_streams[i];
538 if (!rtsp_st)
539 continue;
540 if (rtsp_st->transport_priv) {
541 if (s->oformat) {
542 AVFormatContext *rtpctx = rtsp_st->transport_priv;
543 av_write_trailer(rtpctx);
544 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
545 uint8_t *ptr;
6dc7d80d 546 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
547 av_free(ptr);
548 } else {
22a3212e 549 avio_close(rtpctx->pb);
93e7490e 550 }
b22dbb29 551 avformat_free_context(rtpctx);
93e7490e
MS
552 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
553 ff_rdt_parse_close(rtsp_st->transport_priv);
554 else if (CONFIG_RTPDEC)
bfc6db44 555 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
556 }
557 rtsp_st->transport_priv = NULL;
558 if (rtsp_st->rtp_handle)
e52a9145 559 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
560 rtsp_st->rtp_handle = NULL;
561 }
562}
563
1ced9da3 564/* close and free RTSP streams */
3307e6ea 565void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 566{
52aa4338 567 RTSPState *rt = s->priv_data;
1ced9da3
LA
568 int i;
569 RTSPStream *rtsp_st;
570
93e7490e 571 ff_rtsp_undo_setup(s);
c8965800 572 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
573 rtsp_st = rt->rtsp_streams[i];
574 if (rtsp_st) {
1ced9da3 575 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 576 rtsp_st->dynamic_handler->free(
c8965800 577 rtsp_st->dynamic_protocol_context);
ea7f0807 578 av_free(rtsp_st);
1ced9da3
LA
579 }
580 }
581 av_free(rt->rtsp_streams);
582 if (rt->asf_ctx) {
583 av_close_input_stream (rt->asf_ctx);
584 rt->asf_ctx = NULL;
585 }
a8475bbd 586 av_free(rt->p);
96a7c975 587 av_free(rt->recvbuf);
1ced9da3
LA
588}
589
c8965800 590static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
591{
592 RTSPState *rt = s->priv_data;
593 AVStream *st = NULL;
594
595 /* open the RTP context */
596 if (rtsp_st->stream_index >= 0)
597 st = s->streams[rtsp_st->stream_index];
598 if (!st)
599 s->ctx_flags |= AVFMTCTX_NOHEADER;
600
44b70ce5 601 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
602 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
603 rtsp_st->rtp_handle,
604 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 605 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 606 rtsp_st->rtp_handle = NULL;
44b70ce5 607 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
608 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
609 rtsp_st->dynamic_protocol_context,
610 rtsp_st->dynamic_handler);
44b70ce5 611 else if (CONFIG_RTPDEC)
bfc6db44 612 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
613 rtsp_st->sdp_payload_type,
614 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
615 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
616
617 if (!rtsp_st->transport_priv) {
618 return AVERROR(ENOMEM);
44b70ce5 619 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 620 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
621 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
622 rtsp_st->dynamic_protocol_context,
623 rtsp_st->dynamic_handler);
1ced9da3
LA
624 }
625 }
626
627 return 0;
628}
629
6f5a3d0a 630#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
631static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
632{
633 const char *p;
634 int v;
635
636 p = *pp;
30619e6e 637 p += strspn(p, SPACE_CHARS);
1617ad97
FB
638 v = strtol(p, (char **)&p, 10);
639 if (*p == '-') {
640 p++;
641 *min_ptr = v;
642 v = strtol(p, (char **)&p, 10);
643 *max_ptr = v;
644 } else {
645 *min_ptr = v;
646 *max_ptr = v;
647 }
648 *pp = p;
649}
650
651/* XXX: only one transport specification is parsed */
a9e534d5 652static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
653{
654 char transport_protocol[16];
655 char profile[16];
656 char lower_transport[16];
657 char parameter[16];
658 RTSPTransportField *th;
659 char buf[256];
115329f1 660
1617ad97 661 reply->nb_transports = 0;
115329f1 662
c8965800 663 for (;;) {
30619e6e 664 p += strspn(p, SPACE_CHARS);
1617ad97
FB
665 if (*p == '\0')
666 break;
667
668 th = &reply->transports[reply->nb_transports];
669
115329f1 670 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 671 "/", &p);
bb3244de 672 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
673 get_word_sep(profile, sizeof(profile), "/;,", &p);
674 lower_transport[0] = '\0';
675 /* rtp/avp/<protocol> */
676 if (*p == '/') {
7ecc634e
LB
677 get_word_sep(lower_transport, sizeof(lower_transport),
678 ";,", &p);
119b4668
RB
679 }
680 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
681 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
682 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 683 /* x-pn-tng/<protocol> */
e1502118
LB
684 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
685 profile[0] = '\0';
119b4668 686 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 687 }
bb3244de 688 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 689 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 690 else
90abbdba 691 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 692
1617ad97
FB
693 if (*p == ';')
694 p++;
695 /* get each parameter */
696 while (*p != '\0' && *p != ',') {
697 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
698 if (!strcmp(parameter, "port")) {
699 if (*p == '=') {
700 p++;
701 rtsp_parse_range(&th->port_min, &th->port_max, &p);
702 }
703 } else if (!strcmp(parameter, "client_port")) {
704 if (*p == '=') {
705 p++;
115329f1 706 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
707 &th->client_port_max, &p);
708 }
709 } else if (!strcmp(parameter, "server_port")) {
710 if (*p == '=') {
711 p++;
115329f1 712 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
713 &th->server_port_max, &p);
714 }
715 } else if (!strcmp(parameter, "interleaved")) {
716 if (*p == '=') {
717 p++;
115329f1 718 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
719 &th->interleaved_max, &p);
720 }
721 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
722 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
723 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
724 } else if (!strcmp(parameter, "ttl")) {
725 if (*p == '=') {
726 p++;
727 th->ttl = strtol(p, (char **)&p, 10);
728 }
729 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
730 if (*p == '=') {
731 p++;
732 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 733 get_sockaddr(buf, &th->destination);
1617ad97 734 }
619298a8
JW
735 } else if (!strcmp(parameter, "source")) {
736 if (*p == '=') {
737 p++;
738 get_word_sep(buf, sizeof(buf), ";,", &p);
739 av_strlcpy(th->source, buf, sizeof(th->source));
740 }
1617ad97 741 }
619298a8 742
1617ad97
FB
743 while (*p != ';' && *p != '\0' && *p != ',')
744 p++;
745 if (*p == ';')
746 p++;
747 }
748 if (*p == ',')
749 p++;
750
751 reply->nb_transports++;
752 }
753}
754
29db7c3a
MS
755static void handle_rtp_info(RTSPState *rt, const char *url,
756 uint32_t seq, uint32_t rtptime)
757{
758 int i;
759 if (!rtptime || !url[0])
760 return;
761 if (rt->transport != RTSP_TRANSPORT_RTP)
762 return;
763 for (i = 0; i < rt->nb_rtsp_streams; i++) {
764 RTSPStream *rtsp_st = rt->rtsp_streams[i];
765 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
766 if (!rtpctx)
767 continue;
768 if (!strcmp(rtsp_st->control_url, url)) {
769 rtpctx->base_timestamp = rtptime;
770 break;
771 }
772 }
773}
774
775static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
776{
777 int read = 0;
778 char key[20], value[1024], url[1024] = "";
779 uint32_t seq = 0, rtptime = 0;
780
781 for (;;) {
782 p += strspn(p, SPACE_CHARS);
783 if (!*p)
784 break;
785 get_word_sep(key, sizeof(key), "=", &p);
786 if (*p != '=')
787 break;
788 p++;
789 get_word_sep(value, sizeof(value), ";, ", &p);
790 read++;
791 if (!strcmp(key, "url"))
792 av_strlcpy(url, value, sizeof(url));
793 else if (!strcmp(key, "seq"))
4515f9b5 794 seq = strtoul(value, NULL, 10);
29db7c3a 795 else if (!strcmp(key, "rtptime"))
4515f9b5 796 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
797 if (*p == ',') {
798 handle_rtp_info(rt, url, seq, rtptime);
799 url[0] = '\0';
800 seq = rtptime = 0;
801 read = 0;
802 }
803 if (*p)
804 p++;
805 }
806 if (read > 0)
807 handle_rtp_info(rt, url, seq, rtptime);
808}
809
2626308a 810void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 811 RTSPState *rt, const char *method)
1617ad97
FB
812{
813 const char *p;
814
815 /* NOTE: we do case independent match for broken servers */
816 p = buf;
f7d78f36 817 if (av_stristart(p, "Session:", &p)) {
30e79845 818 int t;
1617ad97 819 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
820 if (av_stristart(p, ";timeout=", &p) &&
821 (t = strtol(p, NULL, 10)) > 0) {
822 reply->timeout = t;
823 }
f7d78f36 824 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 825 reply->content_length = strtol(p, NULL, 10);
f7d78f36 826 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 827 rtsp_parse_transport(reply, p);
f7d78f36 828 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 829 reply->seq = strtol(p, NULL, 10);
f7d78f36 830 } else if (av_stristart(p, "Range:", &p)) {
31693e00 831 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 832 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 833 p += strspn(p, SPACE_CHARS);
30aa6aed 834 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 835 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 836 p += strspn(p, SPACE_CHARS);
7a86bafa 837 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
838 } else if (av_stristart(p, "Notice:", &p) ||
839 av_stristart(p, "X-Notice:", &p)) {
840 reply->notice = strtol(p, NULL, 10);
d243ba30 841 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 842 p += strspn(p, SPACE_CHARS);
d243ba30 843 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 844 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 845 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
846 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
847 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 848 p += strspn(p, SPACE_CHARS);
acc9ed14 849 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 850 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 851 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
852 if (method && !strcmp(method, "DESCRIBE"))
853 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
854 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
855 p += strspn(p, SPACE_CHARS);
856 if (method && !strcmp(method, "PLAY"))
857 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
858 } else if (av_stristart(p, "Public:", &p) && rt) {
859 if (strstr(p, "GET_PARAMETER") &&
860 method && !strcmp(method, "OPTIONS"))
861 rt->get_parameter_supported = 1;
30eae325
MS
862 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
863 p += strspn(p, SPACE_CHARS);
864 rt->accept_dynamic_rate = atoi(p);
1617ad97
FB
865 }
866}
867
b7b8fc34 868/* skip a RTP/TCP interleaved packet */
ec55edba 869void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
870{
871 RTSPState *rt = s->priv_data;
872 int ret, len, len1;
873 uint8_t buf[1024];
874
dce37564 875 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
876 if (ret != 3)
877 return;
80fb8234 878 len = AV_RB16(buf + 1);
67c9cd69 879
dfd2a005 880 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 881
b7b8fc34
FB
882 /* skip payload */
883 while (len > 0) {
884 len1 = len;
885 if (len1 > sizeof(buf))
886 len1 = sizeof(buf);
dce37564 887 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
888 if (ret != len1)
889 return;
890 len -= len1;
891 }
892}
1617ad97 893
3307e6ea 894int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 895 unsigned char **content_ptr,
3df54c6b 896 int return_on_interleaved_data, const char *method)
1617ad97
FB
897{
898 RTSPState *rt = s->priv_data;
899 char buf[4096], buf1[1024], *q;
900 unsigned char ch;
901 const char *p;
7e726132 902 int ret, content_length, line_count = 0;
1617ad97
FB
903 unsigned char *content = NULL;
904
d541a7d2 905 memset(reply, 0, sizeof(*reply));
1617ad97 906
1617ad97 907 /* parse reply (XXX: use buffers) */
1617ad97 908 rt->last_reply[0] = '\0';
c8965800 909 for (;;) {
1617ad97 910 q = buf;
c8965800 911 for (;;) {
dce37564 912 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 913 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 914 if (ret != 1)
2401660d 915 return AVERROR_EOF;
1617ad97
FB
916 if (ch == '\n')
917 break;
b7b8fc34
FB
918 if (ch == '$') {
919 /* XXX: only parse it if first char on line ? */
7e726132
RB
920 if (return_on_interleaved_data) {
921 return 1;
922 } else
ec55edba 923 ff_rtsp_skip_packet(s);
b7b8fc34 924 } else if (ch != '\r') {
1617ad97
FB
925 if ((q - buf) < sizeof(buf) - 1)
926 *q++ = ch;
927 }
928 }
929 *q = '\0';
67c9cd69 930
dfd2a005 931 av_dlog(s, "line='%s'\n", buf);
67c9cd69 932
1617ad97
FB
933 /* test if last line */
934 if (buf[0] == '\0')
935 break;
936 p = buf;
937 if (line_count == 0) {
938 /* get reply code */
939 get_word(buf1, sizeof(buf1), &p);
940 get_word(buf1, sizeof(buf1), &p);
941 reply->status_code = atoi(buf1);
d93fdcbf 942 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 943 } else {
77223c53 944 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
945 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
946 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
947 }
948 line_count++;
949 }
115329f1 950
1617ad97 951 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 952 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 953
1617ad97
FB
954 content_length = reply->content_length;
955 if (content_length > 0) {
956 /* leave some room for a trailing '\0' (useful for simple parsing) */
957 content = av_malloc(content_length + 1);
dce37564 958 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
959 content[content_length] = '\0';
960 }
961 if (content_ptr)
962 *content_ptr = content;
e2e2e7dd
AB
963 else
964 av_free(content);
7e726132 965
7ed8211b
LB
966 if (rt->seq != reply->seq) {
967 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
968 rt->seq, reply->seq);
969 }
970
fccb1770
RB
971 /* EOS */
972 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
973 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 974 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 975 rt->state = RTSP_STATE_IDLE;
c8965800 976 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 977 return AVERROR(EIO); /* data or server error */
c8965800 978 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
979 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
980 return AVERROR(EPERM);
981
7e726132 982 return 0;
1617ad97
FB
983}
984
57c4d01e
DEP
985/**
986 * Send a command to the RTSP server without waiting for the reply.
987 *
988 * @param s RTSP (de)muxer context
989 * @param method the method for the request
990 * @param url the target url for the request
991 * @param headers extra header lines to include in the request
992 * @param send_content if non-null, the data to send as request body content
993 * @param send_content_length the length of the send_content data, or 0 if
994 * send_content is null
995 *
996 * @return zero if success, nonzero otherwise
997 */
998static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
999 const char *method, const char *url,
1000 const char *headers,
1001 const unsigned char *send_content,
1002 int send_content_length)
29b9f58b
RB
1003{
1004 RTSPState *rt = s->priv_data;
f5d33f52
JA
1005 char buf[4096], *out_buf;
1006 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1007
f5d33f52
JA
1008 /* Add in RTSP headers */
1009 out_buf = buf;
29b9f58b 1010 rt->seq++;
b17d11c6
MS
1011 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1012 if (headers)
1013 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1014 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1015 if (rt->session_id[0] != '\0' && (!headers ||
1016 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1017 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1018 }
aa8bf2fb
MS
1019 if (rt->auth[0]) {
1020 char *str = ff_http_auth_create_response(&rt->auth_state,
1021 rt->auth, url, method);
1022 if (str)
1023 av_strlcat(buf, str, sizeof(buf));
1024 av_free(str);
1025 }
dfd017bf
MS
1026 if (send_content_length > 0 && send_content)
1027 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1028 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1029
f5d33f52
JA
1030 /* base64 encode rtsp if tunneling */
1031 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1032 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1033 out_buf = base64buf;
1034 }
1035
dfd2a005 1036 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1037
925e908b 1038 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1039 if (send_content_length > 0 && send_content) {
1040 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1041 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1042 "with content data not supported\n");
1043 return AVERROR_PATCHWELCOME;
1044 }
925e908b 1045 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1046 }
30e79845 1047 rt->last_cmd_time = av_gettime();
d0382374
JA
1048
1049 return 0;
30e79845
RB
1050}
1051
d0382374 1052int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1053 const char *url, const char *headers)
dfd017bf 1054{
d0382374 1055 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1056}
1057
d0382374 1058int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1059 const char *headers, RTSPMessageHeader *reply,
1060 unsigned char **content_ptr)
30e79845 1061{
d0382374 1062 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1063 content_ptr, NULL, 0);
29b9f58b
RB
1064}
1065
d0382374 1066int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1067 const char *method, const char *url,
1068 const char *header,
1069 RTSPMessageHeader *reply,
1070 unsigned char **content_ptr,
1071 const unsigned char *send_content,
1072 int send_content_length)
dfd017bf 1073{
30af0779
MS
1074 RTSPState *rt = s->priv_data;
1075 HTTPAuthType cur_auth_type;
d0382374 1076 int ret;
30af0779
MS
1077
1078retry:
1079 cur_auth_type = rt->auth_state.auth_type;
d0382374 1080 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1081 send_content,
1082 send_content_length)))
d0382374 1083 return ret;
dfd017bf 1084
3df54c6b 1085 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1086 return ret;
30af0779
MS
1087
1088 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1089 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1090 goto retry;
d0382374 1091
bf55cf19 1092 if (reply->status_code > 400){
d93fdcbf 1093 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1094 method,
d93fdcbf
LB
1095 reply->status_code,
1096 reply->reason);
bf55cf19
LB
1097 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1098 }
1099
d0382374 1100 return 0;
dfd017bf
MS
1101}
1102
fef5649a 1103int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1104 int lower_transport, const char *real_challenge)
1617ad97
FB
1105{
1106 RTSPState *rt = s->priv_data;
f830c9a4 1107 int rtx, j, i, err, interleave = 0;
1617ad97 1108 RTSPStream *rtsp_st;
a9e534d5 1109 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1110 char cmd[2048];
e9dea59f
RB
1111 const char *trans_pref;
1112
119b4668 1113 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1114 trans_pref = "x-pn-tng";
1115 else
1116 trans_pref = "RTP/AVP";
115329f1 1117
30e79845
RB
1118 /* default timeout: 1 minute */
1119 rt->timeout = 60;
1120
1617ad97
FB
1121 /* for each stream, make the setup request */
1122 /* XXX: we assume the same server is used for the control of each
c8965800 1123 * RTSP stream */
d1ccf0e0 1124
c8965800 1125 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1126 char transport[2048];
1127
f75e3da5 1128 /*
f830c9a4
RB
1129 * WMS serves all UDP data over a single connection, the RTX, which
1130 * isn't necessarily the first in the SDP but has to be the first
1131 * to be set up, else the second/third SETUP will fail with a 461.
1132 */
1133 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1134 rt->server_type == RTSP_SERVER_WMS) {
1135 if (i == 0) {
1136 /* rtx first */
1137 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1138 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1139 if (len >= 4 &&
c8965800
RB
1140 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1141 "/rtx"))
f830c9a4
RB
1142 break;
1143 }
1144 if (rtx == rt->nb_rtsp_streams)
1145 return -1; /* no RTX found */
1146 rtsp_st = rt->rtsp_streams[rtx];
1147 } else
1148 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1149 } else
2fea9650 1150 rtsp_st = rt->rtsp_streams[i];
1617ad97 1151
1617ad97 1152 /* RTP/UDP */
90abbdba 1153 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1154 char buf[256];
85fb7b34 1155
f830c9a4
RB
1156 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1157 port = reply->transports[0].client_port_min;
1158 goto have_port;
1159 }
1160
85fb7b34 1161 /* first try in specified port range */
d1ccf0e0 1162 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1163 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1164 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1165 "?localport=%d", j);
c8965800
RB
1166 /* we will use two ports per rtp stream (rtp and rtcp) */
1167 j += 2;
6f1b7b39 1168 if (ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
ddffc2fd 1169 &s->interrupt_callback, NULL) == 0)
85fb7b34
FB
1170 goto rtp_opened;
1171 }
1617ad97 1172 }
85fb7b34 1173
a3b058b7
MS
1174 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1175 err = AVERROR(EIO);
1176 goto fail;
85fb7b34
FB
1177
1178 rtp_opened:
bfc6db44 1179 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1180 have_port:
0ad306bc 1181 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1182 "%s/UDP;", trans_pref);
1183 if (rt->server_type != RTSP_SERVER_REAL)
1184 av_strlcat(transport, "unicast;", sizeof(transport));
1185 av_strlcatf(transport, sizeof(transport),
1186 "client_port=%d", port);
f830c9a4
RB
1187 if (rt->transport == RTSP_TRANSPORT_RTP &&
1188 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1189 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1190 }
1191
1192 /* RTP/TCP */
90abbdba 1193 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1194 /* For WMS streams, the application streams are only used for
090438cc
RB
1195 * UDP. When trying to set it up for TCP streams, the server
1196 * will return an error. Therefore, we skip those streams. */
1197 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1198 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1199 AVMEDIA_TYPE_DATA)
090438cc 1200 continue;
0ad306bc 1201 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1202 "%s/TCP;", trans_pref);
895678f8 1203 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1204 av_strlcat(transport, "unicast;", sizeof(transport));
1205 av_strlcatf(transport, sizeof(transport),
1206 "interleaved=%d-%d",
1207 interleave, interleave + 1);
1208 interleave += 2;
1617ad97
FB
1209 }
1210
90abbdba 1211 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1212 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1213 "%s/UDP;multicast", trans_pref);
1617ad97 1214 }
69adcc4f
MS
1215 if (s->oformat) {
1216 av_strlcat(transport, ";mode=receive", sizeof(transport));
1217 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1218 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1219 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1220 snprintf(cmd, sizeof(cmd),
b6892136 1221 "Transport: %s\r\n",
b17d11c6 1222 transport);
76b0d03d
MS
1223 if (rt->accept_dynamic_rate)
1224 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1225 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1226 char real_res[41], real_csum[9];
1227 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1228 real_challenge);
1229 av_strlcatf(cmd, sizeof(cmd),
1230 "If-Match: %s\r\n"
1231 "RealChallenge2: %s, sd=%s\r\n",
1232 rt->session_id, real_res, real_csum);
1233 }
b17d11c6 1234 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1235 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1236 err = 1;
1237 goto fail;
7e6ca34f
RB
1238 } else if (reply->status_code != RTSP_STATUS_OK ||
1239 reply->nb_transports != 1) {
1617ad97
FB
1240 err = AVERROR_INVALIDDATA;
1241 goto fail;
1242 }
1243
1244 /* XXX: same protocol for all streams is required */
1245 if (i > 0) {
119b4668
RB
1246 if (reply->transports[0].lower_transport != rt->lower_transport ||
1247 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1248 err = AVERROR_INVALIDDATA;
1249 goto fail;
1250 }
1251 } else {
90abbdba 1252 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1253 rt->transport = reply->transports[0].transport;
1617ad97
FB
1254 }
1255
8c579c1c
MS
1256 /* Fail if the server responded with another lower transport mode
1257 * than what we requested. */
1258 if (reply->transports[0].lower_transport != lower_transport) {
1259 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1260 err = AVERROR_INVALIDDATA;
1261 goto fail;
1617ad97
FB
1262 }
1263
90abbdba
RB
1264 switch(reply->transports[0].lower_transport) {
1265 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1266 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1267 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1268 break;
115329f1 1269
c8965800 1270 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1271 char url[1024], options[30] = "";
c8965800 1272
9867aea5 1273 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1274 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1275 /* Use source address if specified */
1276 if (reply->transports[0].source[0]) {
1277 ff_url_join(url, sizeof(url), "rtp", NULL,
1278 reply->transports[0].source,
d8407339 1279 reply->transports[0].server_port_min, "%s", options);
619298a8 1280 } else {
7bac991f 1281 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1282 reply->transports[0].server_port_min, "%s", options);
619298a8 1283 }
c8965800 1284 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1285 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1286 err = AVERROR_INVALIDDATA;
1287 goto fail;
1617ad97 1288 }
9c8fa20d
MS
1289 /* Try to initialize the connection state in a
1290 * potential NAT router by sending dummy packets.
1291 * RTP/RTCP dummy packets are used for RDT, too.
1292 */
44b70ce5
MS
1293 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1294 CONFIG_RTPDEC)
bfc6db44 1295 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1296 break;
c8965800
RB
1297 }
1298 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1299 char url[1024], namebuf[50];
1300 struct sockaddr_storage addr;
c8965800
RB
1301 int port, ttl;
1302
7934b15d
MS
1303 if (reply->transports[0].destination.ss_family) {
1304 addr = reply->transports[0].destination;
c8965800
RB
1305 port = reply->transports[0].port_min;
1306 ttl = reply->transports[0].ttl;
1307 } else {
7934b15d 1308 addr = rtsp_st->sdp_ip;
c8965800
RB
1309 port = rtsp_st->sdp_port;
1310 ttl = rtsp_st->sdp_ttl;
1311 }
7934b15d
MS
1312 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1313 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1314 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1315 port, "?ttl=%d", ttl);
6f1b7b39 1316 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1317 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1318 err = AVERROR_INVALIDDATA;
1319 goto fail;
1617ad97
FB
1320 }
1321 break;
1322 }
c8965800 1323 }
d1ccf0e0 1324
ee0cb67f 1325 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1326 goto fail;
1617ad97
FB
1327 }
1328
30e79845
RB
1329 if (reply->timeout > 0)
1330 rt->timeout = reply->timeout;
1331
2e889ae4 1332 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1333 rt->need_subscription = 1;
1334
53620bba
RB
1335 return 0;
1336
1337fail:
aeb2de1c 1338 ff_rtsp_undo_setup(s);
53620bba
RB
1339 return err;
1340}
1341
b8c2c41d
JA
1342void ff_rtsp_close_connections(AVFormatContext *s)
1343{
1344 RTSPState *rt = s->priv_data;
e52a9145
AK
1345 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1346 ffurl_close(rt->rtsp_hd);
6217b645 1347 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1348}
1349
3307e6ea 1350int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1351{
1352 RTSPState *rt = s->priv_data;
921da217
LB
1353 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1354 char *option_list, *option, *filename;
03f8fc08 1355 int port, err, tcp_fd;
354b7573 1356 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1357 int lower_transport_mask = 0;
2762a7a2 1358 char real_challenge[64] = "";
03f8fc08
MS
1359 struct sockaddr_storage peer;
1360 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1361
1362 if (!ff_network_init())
1363 return AVERROR(EIO);
eca4850c 1364
f5d33f52 1365 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1366 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1367 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1368 rt->control_transport = RTSP_MODE_TUNNEL;
1369 }
1370 /* Only pass through valid flags from here */
1371 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1372
1373redirect:
1374 lower_transport_mask = rt->lower_transport_mask;
53620bba 1375 /* extract hostname and port */
f3bfe388 1376 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1377 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1378 if (*auth) {
aa8bf2fb 1379 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1380 }
53620bba
RB
1381 if (port < 0)
1382 port = RTSP_DEFAULT_PORT;
1383
eca4850c 1384#if FF_API_RTSP_URL_OPTIONS
53620bba 1385 /* search for options */
602eb779 1386 option_list = strrchr(path, '?');
53620bba 1387 if (option_list) {
2a21adf9
MS
1388 /* Strip out the RTSP specific options, write out the rest of
1389 * the options back into the same string. */
1390 filename = option_list;
c8965800 1391 while (option_list) {
eca4850c 1392 int handled = 1;
53620bba 1393 /* move the option pointer */
921da217 1394 option = ++option_list;
53620bba
RB
1395 option_list = strchr(option_list, '&');
1396 if (option_list)
921da217
LB
1397 *option_list = 0;
1398
53620bba 1399 /* handle the options */
c8965800 1400 if (!strcmp(option, "udp")) {
7a033e08 1401 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1402 } else if (!strcmp(option, "multicast")) {
7a033e08 1403 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1404 } else if (!strcmp(option, "tcp")) {
7a033e08 1405 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1406 } else if(!strcmp(option, "http")) {
1407 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1408 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7 1409 } else if (!strcmp(option, "filter_src")) {
9867aea5 1410 rt->rtsp_flags |= RTSP_FLAG_FILTER_SRC;
c8965800 1411 } else {
2a21adf9
MS
1412 /* Write options back into the buffer, using memmove instead
1413 * of strcpy since the strings may overlap. */
1414 int len = strlen(option);
1415 memmove(++filename, option, len);
1416 filename += len;
921da217 1417 if (option_list) *filename = '&';
eca4850c 1418 handled = 0;
921da217 1419 }
eca4850c
MS
1420 if (handled)
1421 av_log(s, AV_LOG_WARNING, "Options passed via URL are "
1422 "deprecated, use -rtsp_transport "
1423 "and -rtsp_flags instead.\n");
53620bba 1424 }
921da217 1425 *filename = 0;
53620bba 1426 }
eca4850c 1427#endif
53620bba 1428
90abbdba 1429 if (!lower_transport_mask)
2a1d51c5 1430 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1431
3e24c770 1432 if (s->oformat) {
b7dc88fc
MS
1433 /* Only UDP or TCP - UDP multicast isn't supported. */
1434 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1435 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1436 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1437 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1438 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1439 err = AVERROR(EINVAL);
1440 goto fail;
1441 }
1442 }
1443
4bc5cc23
MS
1444 /* Construct the URI used in request; this is similar to s->filename,
1445 * but with authentication credentials removed and RTSP specific options
1446 * stripped out. */
1447 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1448 host, port, "%s", path);
1449
f5d33f52
JA
1450 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1451 /* set up initial handshake for tunneling */
1452 char httpname[1024];
1453 char sessioncookie[17];
1454 char headers[1024];
1455
10ed37b5 1456 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1457 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1458 av_get_random_seed(), av_get_random_seed());
1459
1460 /* GET requests */
6f1b7b39
MS
1461 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1462 &s->interrupt_callback) < 0) {
f5d33f52
JA
1463 err = AVERROR(EIO);
1464 goto fail;
1465 }
1466
1467 /* generate GET headers */
1468 snprintf(headers, sizeof(headers),
1469 "x-sessioncookie: %s\r\n"
1470 "Accept: application/x-rtsp-tunnelled\r\n"
1471 "Pragma: no-cache\r\n"
1472 "Cache-Control: no-cache\r\n",
1473 sessioncookie);
196bf28c 1474 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1475
1476 /* complete the connection */
ddffc2fd 1477 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1478 err = AVERROR(EIO);
1479 goto fail;
1480 }
1481
1482 /* POST requests */
6f1b7b39
MS
1483 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1484 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1485 err = AVERROR(EIO);
1486 goto fail;
1487 }
1488
1489 /* generate POST headers */
1490 snprintf(headers, sizeof(headers),
1491 "x-sessioncookie: %s\r\n"
1492 "Content-Type: application/x-rtsp-tunnelled\r\n"
1493 "Pragma: no-cache\r\n"
1494 "Cache-Control: no-cache\r\n"
1495 "Content-Length: 32767\r\n"
1496 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1497 sessioncookie);
196bf28c 1498 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1499 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1500
a8ead332
MS
1501 /* Initialize the authentication state for the POST session. The HTTP
1502 * protocol implementation doesn't properly handle multi-pass
1503 * authentication for POST requests, since it would require one of
1504 * the following:
1505 * - implementing Expect: 100-continue, which many HTTP servers
1506 * don't support anyway, even less the RTSP servers that do HTTP
1507 * tunneling
1508 * - sending the whole POST data until getting a 401 reply specifying
1509 * what authentication method to use, then resending all that data
1510 * - waiting for potential 401 replies directly after sending the
1511 * POST header (waiting for some unspecified time)
1512 * Therefore, we copy the full auth state, which works for both basic
1513 * and digest. (For digest, we would have to synchronize the nonce
1514 * count variable between the two sessions, if we'd do more requests
1515 * with the original session, though.)
1516 */
1517 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1518
9290f15d 1519 /* complete the connection */
ddffc2fd 1520 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1521 err = AVERROR(EIO);
1522 goto fail;
1523 }
f5d33f52 1524 } else {
48e77473 1525 /* open the tcp connection */
41874d0a 1526 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1527 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1528 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1529 err = AVERROR(EIO);
1530 goto fail;
1531 }
00e4a1f4 1532 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1533 }
53620bba
RB
1534 rt->seq = 0;
1535
1869ea03 1536 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1537 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1538 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1539 NULL, 0, NI_NUMERICHOST);
1540 }
1541
c8965800
RB
1542 /* request options supported by the server; this also detects server
1543 * type */
1cf151e9 1544 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1545 cmd[0] = 0;
2e889ae4 1546 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1547 av_strlcat(cmd,
f75e3da5 1548 /*
1cf151e9
RB
1549 * The following entries are required for proper
1550 * streaming from a Realmedia server. They are
1551 * interdependent in some way although we currently
1552 * don't quite understand how. Values were copied
1553 * from mplayer SVN r23589.
f75e3da5
DB
1554 * ClientChallenge is a 16-byte ID in hex
1555 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1556 */
1557 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1558 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1559 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1560 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1561 sizeof(cmd));
b17d11c6 1562 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1563 if (reply->status_code != RTSP_STATUS_OK) {
1564 err = AVERROR_INVALIDDATA;
1565 goto fail;
1566 }
1567
1568 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1569 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1570 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1571 continue;
bb3244de 1572 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1573 rt->server_type = RTSP_SERVER_WMS;
c8965800 1574 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1575 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1576 break;
1577 }
1578
44b70ce5 1579 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1580 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1581 else if (CONFIG_RTSP_MUXER)
c2688f3a 1582 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1583 if (err)
53620bba 1584 goto fail;
53620bba 1585
8a8754d8 1586 do {
c8965800
RB
1587 int lower_transport = ff_log2_tab[lower_transport_mask &
1588 ~(lower_transport_mask - 1)];
8a8754d8 1589
fef5649a 1590 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1591 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1592 real_challenge : NULL);
8a8754d8 1593 if (err < 0)
7e6ca34f 1594 goto fail;
90abbdba
RB
1595 lower_transport_mask &= ~(1 << lower_transport);
1596 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1597 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1598 goto fail;
1599 }
1600 } while (err);
53620bba 1601
2762a7a2
MS
1602 rt->lower_transport_mask = lower_transport_mask;
1603 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1604 rt->state = RTSP_STATE_IDLE;
c8965800 1605 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1606 return 0;
1607 fail:
3307e6ea 1608 ff_rtsp_close_streams(s);
b8c2c41d 1609 ff_rtsp_close_connections(s);
35cfd646 1610 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1611 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1612 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1613 reply->status_code,
1614 s->filename);
1615 goto redirect;
1616 }
57b5555c 1617 ff_network_close();
1617ad97
FB
1618 return err;
1619}
2e802e38 1620#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1621
44b70ce5 1622#if CONFIG_RTPDEC
0e59034e 1623static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1624 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1625{
1626 RTSPState *rt = s->priv_data;
1627 RTSPStream *rtsp_st;
a8475bbd
LB
1628 int n, i, ret, tcp_fd, timeout_cnt = 0;
1629 int max_p = 0;
1630 struct pollfd *p = rt->p;
0e59034e 1631
c8965800 1632 for (;;) {
9957cdbf 1633 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1634 return AVERROR_EXIT;
321259c1
MS
1635 if (wait_end && wait_end - av_gettime() < 0)
1636 return AVERROR(EAGAIN);
a8475bbd 1637 max_p = 0;
0e59034e 1638 if (rt->rtsp_hd) {
1869ea03 1639 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1640 p[max_p].fd = tcp_fd;
1641 p[max_p++].events = POLLIN;
0e59034e 1642 } else {
0e59034e
RB
1643 tcp_fd = -1;
1644 }
c8965800 1645 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1646 rtsp_st = rt->rtsp_streams[i];
1647 if (rtsp_st->rtp_handle) {
1869ea03 1648 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1649 p[max_p++].events = POLLIN;
bfc6db44 1650 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1651 p[max_p++].events = POLLIN;
0e59034e
RB
1652 }
1653 }
a8475bbd 1654 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1655 if (n > 0) {
a8475bbd 1656 int j = 1 - (tcp_fd == -1);
9cba6f5f 1657 timeout_cnt = 0;
c8965800 1658 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1659 rtsp_st = rt->rtsp_streams[i];
1660 if (rtsp_st->rtp_handle) {
a8475bbd 1661 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1662 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1663 if (ret > 0) {
1664 *prtsp_st = rtsp_st;
1665 return ret;
1666 }
1667 }
a8475bbd 1668 j+=2;
0e59034e
RB
1669 }
1670 }
5fe8021a 1671#if CONFIG_RTSP_DEMUXER
a8475bbd 1672 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1673 RTSPMessageHeader reply;
1674
3df54c6b 1675 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1676 if (ret < 0)
1677 return ret;
0e59034e 1678 /* XXX: parse message */
c02fd3d2 1679 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1680 return 0;
1681 }
5fe8021a 1682#endif
9cba6f5f 1683 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1684 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1685 } else if (n < 0 && errno != EINTR)
1686 return AVERROR(errno);
0e59034e
RB
1687 }
1688}
1689
0526c6f7 1690int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1691{
1692 RTSPState *rt = s->priv_data;
1693 int ret, len;
321259c1
MS
1694 RTSPStream *rtsp_st, *first_queue_st = NULL;
1695 int64_t wait_end = 0;
0e59034e 1696
b20359f5
JA
1697 if (rt->nb_byes == rt->nb_rtsp_streams)
1698 return AVERROR_EOF;
1699
0e59034e
RB
1700 /* get next frames from the same RTP packet */
1701 if (rt->cur_transport_priv) {
c8965800 1702 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1703 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1704 } else
bfc6db44 1705 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1706 if (ret == 0) {
1707 rt->cur_transport_priv = NULL;
1708 return 0;
1709 } else if (ret == 1) {
1710 return 0;
c8965800 1711 } else
0e59034e 1712 rt->cur_transport_priv = NULL;
0e59034e
RB
1713 }
1714
321259c1
MS
1715 if (rt->transport == RTSP_TRANSPORT_RTP) {
1716 int i;
1717 int64_t first_queue_time = 0;
1718 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1719 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1720 int64_t queue_time;
1721 if (!rtpctx)
1722 continue;
1723 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1724 if (queue_time && (queue_time - first_queue_time < 0 ||
1725 !first_queue_time)) {
1726 first_queue_time = queue_time;
1727 first_queue_st = rt->rtsp_streams[i];
1728 }
1729 }
1730 if (first_queue_time)
1731 wait_end = first_queue_time + s->max_delay;
1732 }
1733
0e59034e
RB
1734 /* read next RTP packet */
1735 redo:
96a7c975
MS
1736 if (!rt->recvbuf) {
1737 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1738 if (!rt->recvbuf)
1739 return AVERROR(ENOMEM);
1740 }
1741
0e59034e
RB
1742 switch(rt->lower_transport) {
1743 default:
5fe8021a 1744#if CONFIG_RTSP_DEMUXER
0e59034e 1745 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1746 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1747 break;
5fe8021a 1748#endif
0e59034e
RB
1749 case RTSP_LOWER_TRANSPORT_UDP:
1750 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1751 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1752 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1753 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1754 break;
1755 }
321259c1
MS
1756 if (len == AVERROR(EAGAIN) && first_queue_st &&
1757 rt->transport == RTSP_TRANSPORT_RTP) {
1758 rtsp_st = first_queue_st;
bfc6db44 1759 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1760 goto end;
1761 }
0e59034e
RB
1762 if (len < 0)
1763 return len;
1764 if (len == 0)
1765 return AVERROR_EOF;
c8965800 1766 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1767 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1768 } else {
bfc6db44 1769 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1770 if (ret < 0) {
1771 /* Either bad packet, or a RTCP packet. Check if the
1772 * first_rtcp_ntp_time field was initialized. */
1773 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1774 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1775 /* first_rtcp_ntp_time has been initialized for this stream,
1776 * copy the same value to all other uninitialized streams,
1777 * in order to map their timestamp origin to the same ntp time
1778 * as this one. */
1779 int i;
3a1cdcc7
MS
1780 AVStream *st = NULL;
1781 if (rtsp_st->stream_index >= 0)
1782 st = s->streams[rtsp_st->stream_index];
2cab6b48 1783 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1784 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1785 AVStream *st2 = NULL;
1786 if (rt->rtsp_streams[i]->stream_index >= 0)
1787 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1788 if (rtpctx2 && st && st2 &&
1789 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1790 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1791 rtpctx2->rtcp_ts_offset = av_rescale_q(
1792 rtpctx->rtcp_ts_offset, st->time_base,
1793 st2->time_base);
1794 }
2cab6b48
MS
1795 }
1796 }
b20359f5
JA
1797 if (ret == -RTCP_BYE) {
1798 rt->nb_byes++;
1799
1800 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1801 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1802
1803 if (rt->nb_byes == rt->nb_rtsp_streams)
1804 return AVERROR_EOF;
1805 }
2cab6b48
MS
1806 }
1807 }
321259c1 1808end:
0e59034e
RB
1809 if (ret < 0)
1810 goto redo;
c8965800 1811 if (ret == 1)
0e59034e
RB
1812 /* more packets may follow, so we save the RTP context */
1813 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1814
1815 return ret;
1816}
44b70ce5 1817#endif /* CONFIG_RTPDEC */
0e59034e 1818
44b70ce5 1819#if CONFIG_SDP_DEMUXER
cb1fdc61 1820static int sdp_probe(AVProbeData *p1)
93ced3e8 1821{
0e1ceacd 1822 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1823
3fbd12d1 1824 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1825 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1826 if (p + sizeof("c=IN IP") - 1 < p_end &&
1827 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1828 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1829
c8965800 1830 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1831 if (++p >= p_end)
cb1fdc61 1832 break;
cb1fdc61
FB
1833 if (*p == '\r')
1834 p++;
1835 }
93ced3e8
FB
1836 return 0;
1837}
1838
c8965800 1839static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1840{
8b1ab7bf 1841 RTSPState *rt = s->priv_data;
93ced3e8
FB
1842 RTSPStream *rtsp_st;
1843 int size, i, err;
1844 char *content;
1845 char url[1024];
1846
57b5555c
MS
1847 if (!ff_network_init())
1848 return AVERROR(EIO);
1849
93ced3e8
FB
1850 /* read the whole sdp file */
1851 /* XXX: better loading */
1852 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1853 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1854 if (size <= 0) {
1855 av_free(content);
1856 return AVERROR_INVALIDDATA;
1857 }
1858 content[size] ='\0';
1859
f81c7ac7 1860 err = ff_sdp_parse(s, content);
93ced3e8 1861 av_free(content);
f81c7ac7 1862 if (err) goto fail;
93ced3e8
FB
1863
1864 /* open each RTP stream */
c8965800 1865 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1866 char namebuf[50];
8b1ab7bf 1867 rtsp_st = rt->rtsp_streams[i];
115329f1 1868
3fbd12d1
MS
1869 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1870 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1871 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1872 namebuf, rtsp_st->sdp_port,
51369f28
MS
1873 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1874 rtsp_st->sdp_ttl,
1875 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
6f1b7b39 1876 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1877 &s->interrupt_callback, NULL) < 0) {
93ced3e8
FB
1878 err = AVERROR_INVALIDDATA;
1879 goto fail;
1880 }
ee0cb67f 1881 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1882 goto fail;
93ced3e8
FB
1883 }
1884 return 0;
c8965800 1885fail:
3307e6ea 1886 ff_rtsp_close_streams(s);
57b5555c 1887 ff_network_close();
93ced3e8
FB
1888 return err;
1889}
1890
93ced3e8
FB
1891static int sdp_read_close(AVFormatContext *s)
1892{
3307e6ea 1893 ff_rtsp_close_streams(s);
57b5555c 1894 ff_network_close();
93ced3e8
FB
1895 return 0;
1896}
1897
51369f28
MS
1898static const AVClass sdp_demuxer_class = {
1899 .class_name = "SDP demuxer",
1900 .item_name = av_default_item_name,
1901 .option = sdp_options,
1902 .version = LIBAVUTIL_VERSION_INT,
1903};
1904
c6610a21 1905AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1906 .name = "sdp",
1907 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1908 .priv_data_size = sizeof(RTSPState),
1909 .read_probe = sdp_probe,
1910 .read_header = sdp_read_header,
1911 .read_packet = ff_rtsp_fetch_packet,
1912 .read_close = sdp_read_close,
51369f28 1913 .priv_class = &sdp_demuxer_class
93ced3e8 1914};
44b70ce5 1915#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1916
44b70ce5 1917#if CONFIG_RTP_DEMUXER
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1918static int rtp_probe(AVProbeData *p)
1919{
1920 if (av_strstart(p->filename, "rtp:", NULL))
1921 return AVPROBE_SCORE_MAX;
1922 return 0;
1923}
1924
1925static int rtp_read_header(AVFormatContext *s,
1926 AVFormatParameters *ap)
1927{
1928 uint8_t recvbuf[1500];
1929 char host[500], sdp[500];
1930 int ret, port;
1931 URLContext* in = NULL;
1932 int payload_type;
1933 AVCodecContext codec;
1934 struct sockaddr_storage addr;
ae628ec1 1935 AVIOContext pb;
44594cc7 1936 socklen_t addrlen = sizeof(addr);
30266038 1937 RTSPState *rt = s->priv_data;
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1938
1939 if (!ff_network_init())
1940 return AVERROR(EIO);
1941
6f1b7b39 1942 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 1943 &s->interrupt_callback, NULL);
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1944 if (ret)
1945 goto fail;
1946
1947 while (1) {
bc371aca 1948 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
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1949 if (ret == AVERROR(EAGAIN))
1950 continue;
1951 if (ret < 0)
1952 goto fail;
1953 if (ret < 12) {
1954 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1955 continue;
1956 }
1957
1958 if ((recvbuf[0] & 0xc0) != 0x80) {
1959 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1960 "received\n");
1961 continue;
1962 }
1963
1964 payload_type = recvbuf[1] & 0x7f;
1965 break;
1966 }
1869ea03 1967 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 1968 ffurl_close(in);
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1969 in = NULL;
1970
1971 memset(&codec, 0, sizeof(codec));
1972 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1973 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1974 "without an SDP file describing it\n",
1975 payload_type);
1976 goto fail;
1977 }
1978 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1979 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1980 "properly you need an SDP file "
1981 "describing it\n");
1982 }
1983
1984 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1985 NULL, 0, s->filename);
1986
1987 snprintf(sdp, sizeof(sdp),
1988 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1989 addr.ss_family == AF_INET ? 4 : 6, host,
1990 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1991 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1992 port, payload_type);
1993 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1994
e731b8d8 1995 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
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1996 s->pb = &pb;
1997
1998 /* sdp_read_header initializes this again */
1999 ff_network_close();
2000
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2001 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2002
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2003 ret = sdp_read_header(s, ap);
2004 s->pb = NULL;
2005 return ret;
2006
2007fail:
2008 if (in)
e52a9145 2009 ffurl_close(in);
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2010 ff_network_close();
2011 return ret;
2012}
2013
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2014static const AVClass rtp_demuxer_class = {
2015 .class_name = "RTP demuxer",
2016 .item_name = av_default_item_name,
2017 .option = rtp_options,
2018 .version = LIBAVUTIL_VERSION_INT,
2019};
2020
c6610a21 2021AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
2022 .name = "rtp",
2023 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
2024 .priv_data_size = sizeof(RTSPState),
2025 .read_probe = rtp_probe,
2026 .read_header = rtp_read_header,
2027 .read_packet = ff_rtsp_fetch_packet,
2028 .read_close = sdp_read_close,
44594cc7 2029 .flags = AVFMT_NOFILE,
51369f28 2030 .priv_class = &rtp_demuxer_class
44594cc7 2031};
44b70ce5 2032#endif /* CONFIG_RTP_DEMUXER */
44594cc7 2033