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