libgsm: add flush function to reset the decoder state when seeking
[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"
1617ad97 29#include "avformat.h"
e731b8d8 30#include "avio_internal.h"
1617ad97 31
db0ed93e 32#include <sys/time.h>
a8475bbd
LB
33#if HAVE_POLL_H
34#include <poll.h>
6ad1c9c9 35#endif
ea452b54 36#include <strings.h>
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
17fff881 68const AVOption ff_rtsp_options[] = {
2c9aa024 69 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {0}, 0, 1, DEC },
17fff881 70 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
eca4850c
MS
71 { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
72 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
73 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
74 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
75 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {(1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
3a6765fb 76 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
17fff881
MS
77 { NULL },
78};
79
51369f28
MS
80static const AVOption sdp_options[] = {
81 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
82 { NULL },
83};
84
85static const AVOption rtp_options[] = {
86 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
87 { NULL },
88};
89
1ef36a70
RB
90static void get_word_until_chars(char *buf, int buf_size,
91 const char *sep, const char **pp)
1617ad97
FB
92{
93 const char *p;
94 char *q;
95
96 p = *pp;
30619e6e 97 p += strspn(p, SPACE_CHARS);
1617ad97
FB
98 q = buf;
99 while (!strchr(sep, *p) && *p != '\0') {
100 if ((q - buf) < buf_size - 1)
101 *q++ = *p;
102 p++;
103 }
104 if (buf_size > 0)
105 *q = '\0';
106 *pp = p;
107}
108
1ef36a70
RB
109static void get_word_sep(char *buf, int buf_size, const char *sep,
110 const char **pp)
1617ad97 111{
1ef36a70
RB
112 if (**pp == '/') (*pp)++;
113 get_word_until_chars(buf, buf_size, sep, pp);
114}
1617ad97 115
1ef36a70
RB
116static void get_word(char *buf, int buf_size, const char **pp)
117{
118 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
119}
120
8bf0f969
MS
121/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
122 * and end time.
123 * Used for seeking in the rtp stream.
124 */
125static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
126{
127 char buf[256];
128
129 p += strspn(p, SPACE_CHARS);
130 if (!av_stristart(p, "npt=", &p))
131 return;
132
133 *start = AV_NOPTS_VALUE;
134 *end = AV_NOPTS_VALUE;
135
136 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 137 av_parse_time(start, buf, 1);
8bf0f969
MS
138 if (*p == '-') {
139 p++;
140 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 141 av_parse_time(end, buf, 1);
8bf0f969
MS
142 }
143// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
144// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
145}
146
147static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
148{
149 struct addrinfo hints, *ai = NULL;
150 memset(&hints, 0, sizeof(hints));
151 hints.ai_flags = AI_NUMERICHOST;
152 if (getaddrinfo(buf, NULL, &hints, &ai))
153 return -1;
154 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
155 freeaddrinfo(ai);
156 return 0;
157}
158
44b70ce5 159#if CONFIG_RTPDEC
003eb642
MS
160static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
161 RTSPStream *rtsp_st, AVCodecContext *codec)
162{
163 if (!handler)
164 return;
165 codec->codec_id = handler->codec_id;
166 rtsp_st->dynamic_handler = handler;
9261e6cf
MS
167 if (handler->alloc)
168 rtsp_st->dynamic_protocol_context = handler->alloc();
003eb642
MS
169}
170
c8965800 171/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 172static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 173 AVStream *st, RTSPStream *rtsp_st,
c8965800 174 int payload_type, const char *p)
93ced3e8 175{
86b6e387 176 AVCodecContext *codec = st->codec;
93ced3e8 177 char buf[256];
d1ccf0e0
RD
178 int i;
179 AVCodec *c;
7b49ce2e 180 const char *c_name;
93ced3e8 181
d1ccf0e0 182 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
183 * see if we can handle this kind of payload.
184 * The space should normally not be there but some Real streams or
185 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
186 * have a trailing space. */
187 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 188 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
189 RTPDynamicProtocolHandler *handler =
190 ff_rtp_handler_find_by_name(buf, codec->codec_type);
191 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
192 /* If no dynamic handler was found, check with the list of standard
193 * allocated types, if such a stream for some reason happens to
194 * use a private payload type. This isn't handled in rtpdec.c, since
195 * the format name from the rtpmap line never is passed into rtpdec. */
196 if (!rtsp_st->dynamic_handler)
197 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 198 } else {
c8965800
RB
199 /* We are in a standard case
200 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 201 /* search into AVRtpPayloadTypes[] */
7ed19d7f 202 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
203 }
204
205 c = avcodec_find_decoder(codec->codec_id);
206 if (c && c->name)
7b49ce2e 207 c_name = c->name;
d1ccf0e0 208 else
170870b7 209 c_name = "(null)";
d1ccf0e0 210
7515ed0c
RB
211 get_word_sep(buf, sizeof(buf), "/", &p);
212 i = atoi(buf);
213 switch (codec->codec_type) {
72415b2a 214 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
215 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
216 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
217 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
218 if (i > 0) {
219 codec->sample_rate = i;
86b6e387 220 av_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
221 get_word_sep(buf, sizeof(buf), "/", &p);
222 i = atoi(buf);
223 if (i > 0)
224 codec->channels = i;
225 // TODO: there is a bug here; if it is a mono stream, and
226 // less than 22000Hz, faad upconverts to stereo and twice
227 // the frequency. No problem, but the sample rate is being
228 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 229 }
7515ed0c
RB
230 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
231 codec->sample_rate);
232 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
233 codec->channels);
234 break;
72415b2a 235 case AVMEDIA_TYPE_VIDEO:
7515ed0c 236 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387
MS
237 if (i > 0)
238 av_set_pts_info(st, 32, 1, i);
7515ed0c
RB
239 break;
240 default:
241 break;
242 }
243 return 0;
93ced3e8
FB
244}
245
c2bfd816 246/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
247 * is broken out as a function because it is used in rtp_h264.c, which is
248 * forthcoming. */
3307e6ea 249int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 250 char *value, int value_size)
d0deedcb 251{
30619e6e 252 *p += strspn(*p, SPACE_CHARS);
c8965800 253 if (**p) {
d0deedcb
RM
254 get_word_sep(attr, attr_size, "=", p);
255 if (**p == '=')
256 (*p)++;
257 get_word_sep(value, value_size, ";", p);
258 if (**p == ';')
259 (*p)++;
260 return 1;
261 }
262 return 0;
263}
264
93ced3e8
FB
265typedef struct SDPParseState {
266 /* SDP only */
3fbd12d1 267 struct sockaddr_storage default_ip;
c8965800
RB
268 int default_ttl;
269 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
270} SDPParseState;
271
272static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
273 int letter, const char *buf)
274{
8b1ab7bf 275 RTSPState *rt = s->priv_data;
1617ad97
FB
276 char buf1[64], st_type[64];
277 const char *p;
72415b2a 278 enum AVMediaType codec_type;
fb65d2ca 279 int payload_type, i;
1617ad97
FB
280 AVStream *st;
281 RTSPStream *rtsp_st;
3fbd12d1 282 struct sockaddr_storage sdp_ip;
93ced3e8
FB
283 int ttl;
284
dfd2a005 285 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
286
287 p = buf;
cb760a47
RB
288 if (s1->skip_media && letter != 'm')
289 return;
c8965800 290 switch (letter) {
93ced3e8
FB
291 case 'c':
292 get_word(buf1, sizeof(buf1), &p);
293 if (strcmp(buf1, "IN") != 0)
294 return;
295 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 296 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
297 return;
298 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 299 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
300 return;
301 ttl = 16;
302 if (*p == '/') {
303 p++;
304 get_word_sep(buf1, sizeof(buf1), "/", &p);
305 ttl = atoi(buf1);
306 }
307 if (s->nb_streams == 0) {
308 s1->default_ip = sdp_ip;
309 s1->default_ttl = ttl;
310 } else {
d9c0510e 311 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
312 rtsp_st->sdp_ip = sdp_ip;
313 rtsp_st->sdp_ttl = ttl;
314 }
315 break;
1617ad97 316 case 's':
d2d67e42 317 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
318 break;
319 case 'i':
320 if (s->nb_streams == 0) {
d2d67e42 321 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
322 break;
323 }
324 break;
325 case 'm':
326 /* new stream */
cb760a47 327 s1->skip_media = 0;
1617ad97
FB
328 get_word(st_type, sizeof(st_type), &p);
329 if (!strcmp(st_type, "audio")) {
72415b2a 330 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 331 } else if (!strcmp(st_type, "video")) {
72415b2a 332 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 333 } else if (!strcmp(st_type, "application")) {
72415b2a 334 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 335 } else {
cb760a47 336 s1->skip_media = 1;
1617ad97
FB
337 return;
338 }
1617ad97
FB
339 rtsp_st = av_mallocz(sizeof(RTSPStream));
340 if (!rtsp_st)
341 return;
8b1ab7bf
FB
342 rtsp_st->stream_index = -1;
343 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
344
345 rtsp_st->sdp_ip = s1->default_ip;
346 rtsp_st->sdp_ttl = s1->default_ttl;
347
93ced3e8
FB
348 get_word(buf1, sizeof(buf1), &p); /* port */
349 rtsp_st->sdp_port = atoi(buf1);
350
351 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 352
93ced3e8
FB
353 /* XXX: handle list of formats */
354 get_word(buf1, sizeof(buf1), &p); /* format list */
355 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 356
7ed19d7f 357 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
358 /* no corresponding stream */
359 } else {
84ad31ff 360 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
361 if (!st)
362 return;
84ad31ff 363 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 364 rtsp_st->stream_index = st->index;
01f4895c 365 st->codec->codec_type = codec_type;
d1ccf0e0 366 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 367 RTPDynamicProtocolHandler *handler;
8b1ab7bf 368 /* if standard payload type, we can find the codec right now */
bf6d9818 369 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
370 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
371 st->codec->sample_rate > 0)
86b6e387 372 av_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
373 /* Even static payload types may need a custom depacketizer */
374 handler = ff_rtp_handler_find_by_id(
375 rtsp_st->sdp_payload_type, st->codec->codec_type);
376 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
377 }
378 }
1617ad97 379 /* put a default control url */
00eb13e0 380 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 381 sizeof(rtsp_st->control_url));
1617ad97
FB
382 break;
383 case 'a':
00eb13e0
AS
384 if (av_strstart(p, "control:", &p)) {
385 if (s->nb_streams == 0) {
386 if (!strncmp(p, "rtsp://", 7))
387 av_strlcpy(rt->control_uri, p,
388 sizeof(rt->control_uri));
389 } else {
0b6a7ff4
MS
390 char proto[32];
391 /* get the control url */
d9c0510e 392 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 393
0b6a7ff4
MS
394 /* XXX: may need to add full url resolution */
395 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
396 NULL, NULL, 0, p);
397 if (proto[0] == '\0') {
398 /* relative control URL */
399 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
400 av_strlcat(rtsp_st->control_url, "/",
401 sizeof(rtsp_st->control_url));
402 av_strlcat(rtsp_st->control_url, p,
403 sizeof(rtsp_st->control_url));
404 } else
405 av_strlcpy(rtsp_st->control_url, p,
406 sizeof(rtsp_st->control_url));
00eb13e0 407 }
83d14c85 408 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 409 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 410 get_word(buf1, sizeof(buf1), &p);
93ced3e8 411 payload_type = atoi(buf1);
83d14c85 412 st = s->streams[s->nb_streams - 1];
d9c0510e 413 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
86b6e387 414 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
415 } else if (av_strstart(p, "fmtp:", &p) ||
416 av_strstart(p, "framesize:", &p)) {
93ced3e8 417 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
418 // let dynamic protocol handlers have a stab at the line.
419 get_word(buf1, sizeof(buf1), &p);
420 payload_type = atoi(buf1);
d9c0510e
MS
421 for (i = 0; i < rt->nb_rtsp_streams; i++) {
422 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
423 if (rtsp_st->sdp_payload_type == payload_type &&
424 rtsp_st->dynamic_handler &&
425 rtsp_st->dynamic_handler->parse_sdp_a_line)
426 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
427 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 428 }
c8965800 429 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
430 int64_t start, end;
431
432 // this is so that seeking on a streamed file can work.
433 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
434 s->start_time = start;
435 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
436 s->duration = (end == AV_NOPTS_VALUE) ?
437 AV_NOPTS_VALUE : end - start;
119b4668
RB
438 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
439 if (atoi(p) == 1)
440 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
441 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
442 s->nb_streams > 0) {
443 st = s->streams[s->nb_streams - 1];
444 st->codec->sample_rate = atoi(p);
1a30d541
RB
445 } else {
446 if (rt->server_type == RTSP_SERVER_WMS)
447 ff_wms_parse_sdp_a_line(s, p);
448 if (s->nb_streams > 0) {
c4a3d032
RB
449 if (rt->server_type == RTSP_SERVER_REAL)
450 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
451
d9c0510e 452 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
c4a3d032
RB
453 if (rtsp_st->dynamic_handler &&
454 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
455 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
456 s->nb_streams - 1,
c4a3d032 457 rtsp_st->dynamic_protocol_context, buf);
1a30d541 458 }
1617ad97
FB
459 }
460 break;
461 }
462}
463
0526c6f7 464int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 465{
a8475bbd 466 RTSPState *rt = s->priv_data;
1617ad97
FB
467 const char *p;
468 int letter;
9211bcdd
RB
469 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
470 * contain long SDP lines containing complete ASF Headers (several
471 * kB) or arrays of MDPR (RM stream descriptor) headers plus
472 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
473 * buffer is large.
474 *
afcea58c
JA
475 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
476 * in rtpdec_xiph.c. */
373afbaf 477 char buf[16384], *q;
93ced3e8 478 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 479
93ced3e8 480 memset(s1, 0, sizeof(SDPParseState));
1617ad97 481 p = content;
c8965800 482 for (;;) {
30619e6e 483 p += strspn(p, SPACE_CHARS);
1617ad97
FB
484 letter = *p;
485 if (letter == '\0')
486 break;
487 p++;
488 if (*p != '=')
489 goto next_line;
490 p++;
491 /* get the content */
492 q = buf;
b6892136 493 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
494 if ((q - buf) < sizeof(buf) - 1)
495 *q++ = *p;
496 p++;
497 }
498 *q = '\0';
93ced3e8 499 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
500 next_line:
501 while (*p != '\n' && *p != '\0')
502 p++;
503 if (*p == '\n')
504 p++;
505 }
a8475bbd
LB
506 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
507 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
508 return 0;
509}
44b70ce5 510#endif /* CONFIG_RTPDEC */
1617ad97 511
93e7490e
MS
512void ff_rtsp_undo_setup(AVFormatContext *s)
513{
514 RTSPState *rt = s->priv_data;
515 int i;
516
517 for (i = 0; i < rt->nb_rtsp_streams; i++) {
518 RTSPStream *rtsp_st = rt->rtsp_streams[i];
519 if (!rtsp_st)
520 continue;
521 if (rtsp_st->transport_priv) {
522 if (s->oformat) {
523 AVFormatContext *rtpctx = rtsp_st->transport_priv;
524 av_write_trailer(rtpctx);
525 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
526 uint8_t *ptr;
6dc7d80d 527 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
528 av_free(ptr);
529 } else {
22a3212e 530 avio_close(rtpctx->pb);
93e7490e 531 }
b22dbb29 532 avformat_free_context(rtpctx);
93e7490e
MS
533 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
534 ff_rdt_parse_close(rtsp_st->transport_priv);
535 else if (CONFIG_RTPDEC)
bfc6db44 536 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
537 }
538 rtsp_st->transport_priv = NULL;
539 if (rtsp_st->rtp_handle)
e52a9145 540 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
541 rtsp_st->rtp_handle = NULL;
542 }
543}
544
1ced9da3 545/* close and free RTSP streams */
3307e6ea 546void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 547{
52aa4338 548 RTSPState *rt = s->priv_data;
1ced9da3
LA
549 int i;
550 RTSPStream *rtsp_st;
551
93e7490e 552 ff_rtsp_undo_setup(s);
c8965800 553 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
554 rtsp_st = rt->rtsp_streams[i];
555 if (rtsp_st) {
1ced9da3 556 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 557 rtsp_st->dynamic_handler->free(
c8965800 558 rtsp_st->dynamic_protocol_context);
ea7f0807 559 av_free(rtsp_st);
1ced9da3
LA
560 }
561 }
562 av_free(rt->rtsp_streams);
563 if (rt->asf_ctx) {
564 av_close_input_stream (rt->asf_ctx);
565 rt->asf_ctx = NULL;
566 }
a8475bbd 567 av_free(rt->p);
96a7c975 568 av_free(rt->recvbuf);
1ced9da3
LA
569}
570
c8965800 571static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
572{
573 RTSPState *rt = s->priv_data;
574 AVStream *st = NULL;
575
576 /* open the RTP context */
577 if (rtsp_st->stream_index >= 0)
578 st = s->streams[rtsp_st->stream_index];
579 if (!st)
580 s->ctx_flags |= AVFMTCTX_NOHEADER;
581
44b70ce5 582 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
583 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
584 rtsp_st->rtp_handle,
585 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 586 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 587 rtsp_st->rtp_handle = NULL;
44b70ce5 588 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
589 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
590 rtsp_st->dynamic_protocol_context,
591 rtsp_st->dynamic_handler);
44b70ce5 592 else if (CONFIG_RTPDEC)
bfc6db44 593 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
594 rtsp_st->sdp_payload_type,
595 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
596 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
597
598 if (!rtsp_st->transport_priv) {
599 return AVERROR(ENOMEM);
44b70ce5 600 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 601 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
602 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
603 rtsp_st->dynamic_protocol_context,
604 rtsp_st->dynamic_handler);
1ced9da3
LA
605 }
606 }
607
608 return 0;
609}
610
6f5a3d0a 611#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
612static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
613{
614 const char *p;
615 int v;
616
617 p = *pp;
30619e6e 618 p += strspn(p, SPACE_CHARS);
1617ad97
FB
619 v = strtol(p, (char **)&p, 10);
620 if (*p == '-') {
621 p++;
622 *min_ptr = v;
623 v = strtol(p, (char **)&p, 10);
624 *max_ptr = v;
625 } else {
626 *min_ptr = v;
627 *max_ptr = v;
628 }
629 *pp = p;
630}
631
632/* XXX: only one transport specification is parsed */
a9e534d5 633static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
634{
635 char transport_protocol[16];
636 char profile[16];
637 char lower_transport[16];
638 char parameter[16];
639 RTSPTransportField *th;
640 char buf[256];
115329f1 641
1617ad97 642 reply->nb_transports = 0;
115329f1 643
c8965800 644 for (;;) {
30619e6e 645 p += strspn(p, SPACE_CHARS);
1617ad97
FB
646 if (*p == '\0')
647 break;
648
649 th = &reply->transports[reply->nb_transports];
650
115329f1 651 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 652 "/", &p);
e1502118 653 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
654 get_word_sep(profile, sizeof(profile), "/;,", &p);
655 lower_transport[0] = '\0';
656 /* rtp/avp/<protocol> */
657 if (*p == '/') {
7ecc634e
LB
658 get_word_sep(lower_transport, sizeof(lower_transport),
659 ";,", &p);
119b4668
RB
660 }
661 th->transport = RTSP_TRANSPORT_RTP;
662 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
663 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 664 /* x-pn-tng/<protocol> */
e1502118
LB
665 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
666 profile[0] = '\0';
119b4668 667 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 668 }
b6892136 669 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 670 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 671 else
90abbdba 672 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 673
1617ad97
FB
674 if (*p == ';')
675 p++;
676 /* get each parameter */
677 while (*p != '\0' && *p != ',') {
678 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
679 if (!strcmp(parameter, "port")) {
680 if (*p == '=') {
681 p++;
682 rtsp_parse_range(&th->port_min, &th->port_max, &p);
683 }
684 } else if (!strcmp(parameter, "client_port")) {
685 if (*p == '=') {
686 p++;
115329f1 687 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
688 &th->client_port_max, &p);
689 }
690 } else if (!strcmp(parameter, "server_port")) {
691 if (*p == '=') {
692 p++;
115329f1 693 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
694 &th->server_port_max, &p);
695 }
696 } else if (!strcmp(parameter, "interleaved")) {
697 if (*p == '=') {
698 p++;
115329f1 699 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
700 &th->interleaved_max, &p);
701 }
702 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
703 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
704 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
705 } else if (!strcmp(parameter, "ttl")) {
706 if (*p == '=') {
707 p++;
708 th->ttl = strtol(p, (char **)&p, 10);
709 }
710 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
711 if (*p == '=') {
712 p++;
713 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 714 get_sockaddr(buf, &th->destination);
1617ad97 715 }
619298a8
JW
716 } else if (!strcmp(parameter, "source")) {
717 if (*p == '=') {
718 p++;
719 get_word_sep(buf, sizeof(buf), ";,", &p);
720 av_strlcpy(th->source, buf, sizeof(th->source));
721 }
1617ad97 722 }
619298a8 723
1617ad97
FB
724 while (*p != ';' && *p != '\0' && *p != ',')
725 p++;
726 if (*p == ';')
727 p++;
728 }
729 if (*p == ',')
730 p++;
731
732 reply->nb_transports++;
733 }
734}
735
29db7c3a
MS
736static void handle_rtp_info(RTSPState *rt, const char *url,
737 uint32_t seq, uint32_t rtptime)
738{
739 int i;
740 if (!rtptime || !url[0])
741 return;
742 if (rt->transport != RTSP_TRANSPORT_RTP)
743 return;
744 for (i = 0; i < rt->nb_rtsp_streams; i++) {
745 RTSPStream *rtsp_st = rt->rtsp_streams[i];
746 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
747 if (!rtpctx)
748 continue;
749 if (!strcmp(rtsp_st->control_url, url)) {
750 rtpctx->base_timestamp = rtptime;
751 break;
752 }
753 }
754}
755
756static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
757{
758 int read = 0;
759 char key[20], value[1024], url[1024] = "";
760 uint32_t seq = 0, rtptime = 0;
761
762 for (;;) {
763 p += strspn(p, SPACE_CHARS);
764 if (!*p)
765 break;
766 get_word_sep(key, sizeof(key), "=", &p);
767 if (*p != '=')
768 break;
769 p++;
770 get_word_sep(value, sizeof(value), ";, ", &p);
771 read++;
772 if (!strcmp(key, "url"))
773 av_strlcpy(url, value, sizeof(url));
774 else if (!strcmp(key, "seq"))
4515f9b5 775 seq = strtoul(value, NULL, 10);
29db7c3a 776 else if (!strcmp(key, "rtptime"))
4515f9b5 777 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
778 if (*p == ',') {
779 handle_rtp_info(rt, url, seq, rtptime);
780 url[0] = '\0';
781 seq = rtptime = 0;
782 read = 0;
783 }
784 if (*p)
785 p++;
786 }
787 if (read > 0)
788 handle_rtp_info(rt, url, seq, rtptime);
789}
790
2626308a 791void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 792 RTSPState *rt, const char *method)
1617ad97
FB
793{
794 const char *p;
795
796 /* NOTE: we do case independent match for broken servers */
797 p = buf;
f7d78f36 798 if (av_stristart(p, "Session:", &p)) {
30e79845 799 int t;
1617ad97 800 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
801 if (av_stristart(p, ";timeout=", &p) &&
802 (t = strtol(p, NULL, 10)) > 0) {
803 reply->timeout = t;
804 }
f7d78f36 805 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 806 reply->content_length = strtol(p, NULL, 10);
f7d78f36 807 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 808 rtsp_parse_transport(reply, p);
f7d78f36 809 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 810 reply->seq = strtol(p, NULL, 10);
f7d78f36 811 } else if (av_stristart(p, "Range:", &p)) {
31693e00 812 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 813 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 814 p += strspn(p, SPACE_CHARS);
30aa6aed 815 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 816 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 817 p += strspn(p, SPACE_CHARS);
7a86bafa 818 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
819 } else if (av_stristart(p, "Notice:", &p) ||
820 av_stristart(p, "X-Notice:", &p)) {
821 reply->notice = strtol(p, NULL, 10);
d243ba30 822 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 823 p += strspn(p, SPACE_CHARS);
d243ba30 824 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 825 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 826 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
827 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
828 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 829 p += strspn(p, SPACE_CHARS);
acc9ed14 830 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 831 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 832 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
833 if (method && !strcmp(method, "DESCRIBE"))
834 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
835 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
836 p += strspn(p, SPACE_CHARS);
837 if (method && !strcmp(method, "PLAY"))
838 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
839 } else if (av_stristart(p, "Public:", &p) && rt) {
840 if (strstr(p, "GET_PARAMETER") &&
841 method && !strcmp(method, "OPTIONS"))
842 rt->get_parameter_supported = 1;
30eae325
MS
843 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
844 p += strspn(p, SPACE_CHARS);
845 rt->accept_dynamic_rate = atoi(p);
1617ad97
FB
846 }
847}
848
b7b8fc34 849/* skip a RTP/TCP interleaved packet */
ec55edba 850void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
851{
852 RTSPState *rt = s->priv_data;
853 int ret, len, len1;
854 uint8_t buf[1024];
855
dce37564 856 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
857 if (ret != 3)
858 return;
80fb8234 859 len = AV_RB16(buf + 1);
67c9cd69 860
dfd2a005 861 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 862
b7b8fc34
FB
863 /* skip payload */
864 while (len > 0) {
865 len1 = len;
866 if (len1 > sizeof(buf))
867 len1 = sizeof(buf);
dce37564 868 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
869 if (ret != len1)
870 return;
871 len -= len1;
872 }
873}
1617ad97 874
3307e6ea 875int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 876 unsigned char **content_ptr,
3df54c6b 877 int return_on_interleaved_data, const char *method)
1617ad97
FB
878{
879 RTSPState *rt = s->priv_data;
880 char buf[4096], buf1[1024], *q;
881 unsigned char ch;
882 const char *p;
7e726132 883 int ret, content_length, line_count = 0;
1617ad97
FB
884 unsigned char *content = NULL;
885
d541a7d2 886 memset(reply, 0, sizeof(*reply));
1617ad97 887
1617ad97 888 /* parse reply (XXX: use buffers) */
1617ad97 889 rt->last_reply[0] = '\0';
c8965800 890 for (;;) {
1617ad97 891 q = buf;
c8965800 892 for (;;) {
dce37564 893 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 894 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 895 if (ret != 1)
2401660d 896 return AVERROR_EOF;
1617ad97
FB
897 if (ch == '\n')
898 break;
b7b8fc34
FB
899 if (ch == '$') {
900 /* XXX: only parse it if first char on line ? */
7e726132
RB
901 if (return_on_interleaved_data) {
902 return 1;
903 } else
ec55edba 904 ff_rtsp_skip_packet(s);
b7b8fc34 905 } else if (ch != '\r') {
1617ad97
FB
906 if ((q - buf) < sizeof(buf) - 1)
907 *q++ = ch;
908 }
909 }
910 *q = '\0';
67c9cd69 911
dfd2a005 912 av_dlog(s, "line='%s'\n", buf);
67c9cd69 913
1617ad97
FB
914 /* test if last line */
915 if (buf[0] == '\0')
916 break;
917 p = buf;
918 if (line_count == 0) {
919 /* get reply code */
920 get_word(buf1, sizeof(buf1), &p);
921 get_word(buf1, sizeof(buf1), &p);
922 reply->status_code = atoi(buf1);
d93fdcbf 923 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 924 } else {
77223c53 925 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
926 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
927 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
928 }
929 line_count++;
930 }
115329f1 931
1617ad97 932 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 933 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 934
1617ad97
FB
935 content_length = reply->content_length;
936 if (content_length > 0) {
937 /* leave some room for a trailing '\0' (useful for simple parsing) */
938 content = av_malloc(content_length + 1);
dce37564 939 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
940 content[content_length] = '\0';
941 }
942 if (content_ptr)
943 *content_ptr = content;
e2e2e7dd
AB
944 else
945 av_free(content);
7e726132 946
7ed8211b
LB
947 if (rt->seq != reply->seq) {
948 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
949 rt->seq, reply->seq);
950 }
951
fccb1770
RB
952 /* EOS */
953 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
954 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 955 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 956 rt->state = RTSP_STATE_IDLE;
c8965800 957 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 958 return AVERROR(EIO); /* data or server error */
c8965800 959 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
960 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
961 return AVERROR(EPERM);
962
7e726132 963 return 0;
1617ad97
FB
964}
965
57c4d01e
DEP
966/**
967 * Send a command to the RTSP server without waiting for the reply.
968 *
969 * @param s RTSP (de)muxer context
970 * @param method the method for the request
971 * @param url the target url for the request
972 * @param headers extra header lines to include in the request
973 * @param send_content if non-null, the data to send as request body content
974 * @param send_content_length the length of the send_content data, or 0 if
975 * send_content is null
976 *
977 * @return zero if success, nonzero otherwise
978 */
979static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
980 const char *method, const char *url,
981 const char *headers,
982 const unsigned char *send_content,
983 int send_content_length)
29b9f58b
RB
984{
985 RTSPState *rt = s->priv_data;
f5d33f52
JA
986 char buf[4096], *out_buf;
987 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 988
f5d33f52
JA
989 /* Add in RTSP headers */
990 out_buf = buf;
29b9f58b 991 rt->seq++;
b17d11c6
MS
992 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
993 if (headers)
994 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 995 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
996 if (rt->session_id[0] != '\0' && (!headers ||
997 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 998 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 999 }
aa8bf2fb
MS
1000 if (rt->auth[0]) {
1001 char *str = ff_http_auth_create_response(&rt->auth_state,
1002 rt->auth, url, method);
1003 if (str)
1004 av_strlcat(buf, str, sizeof(buf));
1005 av_free(str);
1006 }
dfd017bf
MS
1007 if (send_content_length > 0 && send_content)
1008 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1009 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1010
f5d33f52
JA
1011 /* base64 encode rtsp if tunneling */
1012 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1013 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1014 out_buf = base64buf;
1015 }
1016
dfd2a005 1017 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1018
925e908b 1019 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1020 if (send_content_length > 0 && send_content) {
1021 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1022 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1023 "with content data not supported\n");
1024 return AVERROR_PATCHWELCOME;
1025 }
925e908b 1026 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1027 }
30e79845 1028 rt->last_cmd_time = av_gettime();
d0382374
JA
1029
1030 return 0;
30e79845
RB
1031}
1032
d0382374 1033int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1034 const char *url, const char *headers)
dfd017bf 1035{
d0382374 1036 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1037}
1038
d0382374 1039int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1040 const char *headers, RTSPMessageHeader *reply,
1041 unsigned char **content_ptr)
30e79845 1042{
d0382374 1043 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1044 content_ptr, NULL, 0);
29b9f58b
RB
1045}
1046
d0382374 1047int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1048 const char *method, const char *url,
1049 const char *header,
1050 RTSPMessageHeader *reply,
1051 unsigned char **content_ptr,
1052 const unsigned char *send_content,
1053 int send_content_length)
dfd017bf 1054{
30af0779
MS
1055 RTSPState *rt = s->priv_data;
1056 HTTPAuthType cur_auth_type;
d0382374 1057 int ret;
30af0779
MS
1058
1059retry:
1060 cur_auth_type = rt->auth_state.auth_type;
d0382374 1061 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1062 send_content,
1063 send_content_length)))
d0382374 1064 return ret;
dfd017bf 1065
3df54c6b 1066 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1067 return ret;
30af0779
MS
1068
1069 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1070 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1071 goto retry;
d0382374 1072
bf55cf19 1073 if (reply->status_code > 400){
d93fdcbf 1074 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1075 method,
d93fdcbf
LB
1076 reply->status_code,
1077 reply->reason);
bf55cf19
LB
1078 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1079 }
1080
d0382374 1081 return 0;
dfd017bf
MS
1082}
1083
fef5649a 1084int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1085 int lower_transport, const char *real_challenge)
1617ad97
FB
1086{
1087 RTSPState *rt = s->priv_data;
f830c9a4 1088 int rtx, j, i, err, interleave = 0;
1617ad97 1089 RTSPStream *rtsp_st;
a9e534d5 1090 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1091 char cmd[2048];
e9dea59f
RB
1092 const char *trans_pref;
1093
119b4668 1094 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1095 trans_pref = "x-pn-tng";
1096 else
1097 trans_pref = "RTP/AVP";
115329f1 1098
30e79845
RB
1099 /* default timeout: 1 minute */
1100 rt->timeout = 60;
1101
1617ad97
FB
1102 /* for each stream, make the setup request */
1103 /* XXX: we assume the same server is used for the control of each
c8965800 1104 * RTSP stream */
d1ccf0e0 1105
c8965800 1106 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1107 char transport[2048];
1108
f75e3da5 1109 /*
f830c9a4
RB
1110 * WMS serves all UDP data over a single connection, the RTX, which
1111 * isn't necessarily the first in the SDP but has to be the first
1112 * to be set up, else the second/third SETUP will fail with a 461.
1113 */
1114 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1115 rt->server_type == RTSP_SERVER_WMS) {
1116 if (i == 0) {
1117 /* rtx first */
1118 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1119 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1120 if (len >= 4 &&
c8965800
RB
1121 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1122 "/rtx"))
f830c9a4
RB
1123 break;
1124 }
1125 if (rtx == rt->nb_rtsp_streams)
1126 return -1; /* no RTX found */
1127 rtsp_st = rt->rtsp_streams[rtx];
1128 } else
1129 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1130 } else
2fea9650 1131 rtsp_st = rt->rtsp_streams[i];
1617ad97 1132
1617ad97 1133 /* RTP/UDP */
90abbdba 1134 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1135 char buf[256];
85fb7b34 1136
f830c9a4
RB
1137 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1138 port = reply->transports[0].client_port_min;
1139 goto have_port;
1140 }
1141
85fb7b34 1142 /* first try in specified port range */
d1ccf0e0 1143 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1144 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1145 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1146 "?localport=%d", j);
c8965800
RB
1147 /* we will use two ports per rtp stream (rtp and rtcp) */
1148 j += 2;
59d96941 1149 if (ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE) == 0)
85fb7b34
FB
1150 goto rtp_opened;
1151 }
1617ad97 1152 }
85fb7b34 1153
a3b058b7
MS
1154 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1155 err = AVERROR(EIO);
1156 goto fail;
85fb7b34
FB
1157
1158 rtp_opened:
bfc6db44 1159 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1160 have_port:
0ad306bc 1161 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1162 "%s/UDP;", trans_pref);
1163 if (rt->server_type != RTSP_SERVER_REAL)
1164 av_strlcat(transport, "unicast;", sizeof(transport));
1165 av_strlcatf(transport, sizeof(transport),
1166 "client_port=%d", port);
f830c9a4
RB
1167 if (rt->transport == RTSP_TRANSPORT_RTP &&
1168 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1169 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1170 }
1171
1172 /* RTP/TCP */
90abbdba 1173 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1174 /* For WMS streams, the application streams are only used for
090438cc
RB
1175 * UDP. When trying to set it up for TCP streams, the server
1176 * will return an error. Therefore, we skip those streams. */
1177 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1178 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1179 AVMEDIA_TYPE_DATA)
090438cc 1180 continue;
0ad306bc 1181 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1182 "%s/TCP;", trans_pref);
895678f8 1183 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1184 av_strlcat(transport, "unicast;", sizeof(transport));
1185 av_strlcatf(transport, sizeof(transport),
1186 "interleaved=%d-%d",
1187 interleave, interleave + 1);
1188 interleave += 2;
1617ad97
FB
1189 }
1190
90abbdba 1191 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1192 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1193 "%s/UDP;multicast", trans_pref);
1617ad97 1194 }
69adcc4f
MS
1195 if (s->oformat) {
1196 av_strlcat(transport, ";mode=receive", sizeof(transport));
1197 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1198 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1199 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1200 snprintf(cmd, sizeof(cmd),
b6892136 1201 "Transport: %s\r\n",
b17d11c6 1202 transport);
76b0d03d
MS
1203 if (rt->accept_dynamic_rate)
1204 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1205 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1206 char real_res[41], real_csum[9];
1207 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1208 real_challenge);
1209 av_strlcatf(cmd, sizeof(cmd),
1210 "If-Match: %s\r\n"
1211 "RealChallenge2: %s, sd=%s\r\n",
1212 rt->session_id, real_res, real_csum);
1213 }
b17d11c6 1214 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1215 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1216 err = 1;
1217 goto fail;
7e6ca34f
RB
1218 } else if (reply->status_code != RTSP_STATUS_OK ||
1219 reply->nb_transports != 1) {
1617ad97
FB
1220 err = AVERROR_INVALIDDATA;
1221 goto fail;
1222 }
1223
1224 /* XXX: same protocol for all streams is required */
1225 if (i > 0) {
119b4668
RB
1226 if (reply->transports[0].lower_transport != rt->lower_transport ||
1227 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1228 err = AVERROR_INVALIDDATA;
1229 goto fail;
1230 }
1231 } else {
90abbdba 1232 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1233 rt->transport = reply->transports[0].transport;
1617ad97
FB
1234 }
1235
8c579c1c
MS
1236 /* Fail if the server responded with another lower transport mode
1237 * than what we requested. */
1238 if (reply->transports[0].lower_transport != lower_transport) {
1239 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1240 err = AVERROR_INVALIDDATA;
1241 goto fail;
1617ad97
FB
1242 }
1243
90abbdba
RB
1244 switch(reply->transports[0].lower_transport) {
1245 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1246 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1247 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1248 break;
115329f1 1249
c8965800 1250 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1251 char url[1024], options[30] = "";
c8965800 1252
9867aea5 1253 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1254 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1255 /* Use source address if specified */
1256 if (reply->transports[0].source[0]) {
1257 ff_url_join(url, sizeof(url), "rtp", NULL,
1258 reply->transports[0].source,
d8407339 1259 reply->transports[0].server_port_min, "%s", options);
619298a8 1260 } else {
7bac991f 1261 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1262 reply->transports[0].server_port_min, "%s", options);
619298a8 1263 }
c8965800 1264 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1265 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1266 err = AVERROR_INVALIDDATA;
1267 goto fail;
1617ad97 1268 }
9c8fa20d
MS
1269 /* Try to initialize the connection state in a
1270 * potential NAT router by sending dummy packets.
1271 * RTP/RTCP dummy packets are used for RDT, too.
1272 */
44b70ce5
MS
1273 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1274 CONFIG_RTPDEC)
bfc6db44 1275 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1276 break;
c8965800
RB
1277 }
1278 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1279 char url[1024], namebuf[50];
1280 struct sockaddr_storage addr;
c8965800
RB
1281 int port, ttl;
1282
7934b15d
MS
1283 if (reply->transports[0].destination.ss_family) {
1284 addr = reply->transports[0].destination;
c8965800
RB
1285 port = reply->transports[0].port_min;
1286 ttl = reply->transports[0].ttl;
1287 } else {
7934b15d 1288 addr = rtsp_st->sdp_ip;
c8965800
RB
1289 port = rtsp_st->sdp_port;
1290 ttl = rtsp_st->sdp_ttl;
1291 }
7934b15d
MS
1292 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1293 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1294 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1295 port, "?ttl=%d", ttl);
59d96941 1296 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE) < 0) {
c8965800
RB
1297 err = AVERROR_INVALIDDATA;
1298 goto fail;
1617ad97
FB
1299 }
1300 break;
1301 }
c8965800 1302 }
d1ccf0e0 1303
ee0cb67f 1304 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1305 goto fail;
1617ad97
FB
1306 }
1307
30e79845
RB
1308 if (reply->timeout > 0)
1309 rt->timeout = reply->timeout;
1310
2e889ae4 1311 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1312 rt->need_subscription = 1;
1313
53620bba
RB
1314 return 0;
1315
1316fail:
aeb2de1c 1317 ff_rtsp_undo_setup(s);
53620bba
RB
1318 return err;
1319}
1320
b8c2c41d
JA
1321void ff_rtsp_close_connections(AVFormatContext *s)
1322{
1323 RTSPState *rt = s->priv_data;
e52a9145
AK
1324 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1325 ffurl_close(rt->rtsp_hd);
6217b645 1326 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1327}
1328
3307e6ea 1329int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1330{
1331 RTSPState *rt = s->priv_data;
921da217
LB
1332 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1333 char *option_list, *option, *filename;
03f8fc08 1334 int port, err, tcp_fd;
354b7573 1335 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1336 int lower_transport_mask = 0;
2762a7a2 1337 char real_challenge[64] = "";
03f8fc08
MS
1338 struct sockaddr_storage peer;
1339 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1340
1341 if (!ff_network_init())
1342 return AVERROR(EIO);
eca4850c 1343
f5d33f52 1344 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1345 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1346 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1347 rt->control_transport = RTSP_MODE_TUNNEL;
1348 }
1349 /* Only pass through valid flags from here */
1350 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1351
1352redirect:
1353 lower_transport_mask = rt->lower_transport_mask;
53620bba 1354 /* extract hostname and port */
f3bfe388 1355 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1356 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1357 if (*auth) {
aa8bf2fb 1358 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1359 }
53620bba
RB
1360 if (port < 0)
1361 port = RTSP_DEFAULT_PORT;
1362
eca4850c 1363#if FF_API_RTSP_URL_OPTIONS
53620bba 1364 /* search for options */
602eb779 1365 option_list = strrchr(path, '?');
53620bba 1366 if (option_list) {
2a21adf9
MS
1367 /* Strip out the RTSP specific options, write out the rest of
1368 * the options back into the same string. */
1369 filename = option_list;
c8965800 1370 while (option_list) {
eca4850c 1371 int handled = 1;
53620bba 1372 /* move the option pointer */
921da217 1373 option = ++option_list;
53620bba
RB
1374 option_list = strchr(option_list, '&');
1375 if (option_list)
921da217
LB
1376 *option_list = 0;
1377
53620bba 1378 /* handle the options */
c8965800 1379 if (!strcmp(option, "udp")) {
7a033e08 1380 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1381 } else if (!strcmp(option, "multicast")) {
7a033e08 1382 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1383 } else if (!strcmp(option, "tcp")) {
7a033e08 1384 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1385 } else if(!strcmp(option, "http")) {
1386 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1387 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7 1388 } else if (!strcmp(option, "filter_src")) {
9867aea5 1389 rt->rtsp_flags |= RTSP_FLAG_FILTER_SRC;
c8965800 1390 } else {
2a21adf9
MS
1391 /* Write options back into the buffer, using memmove instead
1392 * of strcpy since the strings may overlap. */
1393 int len = strlen(option);
1394 memmove(++filename, option, len);
1395 filename += len;
921da217 1396 if (option_list) *filename = '&';
eca4850c 1397 handled = 0;
921da217 1398 }
eca4850c
MS
1399 if (handled)
1400 av_log(s, AV_LOG_WARNING, "Options passed via URL are "
1401 "deprecated, use -rtsp_transport "
1402 "and -rtsp_flags instead.\n");
53620bba 1403 }
921da217 1404 *filename = 0;
53620bba 1405 }
eca4850c 1406#endif
53620bba 1407
90abbdba 1408 if (!lower_transport_mask)
2a1d51c5 1409 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1410
3e24c770 1411 if (s->oformat) {
b7dc88fc
MS
1412 /* Only UDP or TCP - UDP multicast isn't supported. */
1413 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1414 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1415 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1416 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1417 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1418 err = AVERROR(EINVAL);
1419 goto fail;
1420 }
1421 }
1422
4bc5cc23
MS
1423 /* Construct the URI used in request; this is similar to s->filename,
1424 * but with authentication credentials removed and RTSP specific options
1425 * stripped out. */
1426 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1427 host, port, "%s", path);
1428
f5d33f52
JA
1429 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1430 /* set up initial handshake for tunneling */
1431 char httpname[1024];
1432 char sessioncookie[17];
1433 char headers[1024];
1434
10ed37b5 1435 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1436 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1437 av_get_random_seed(), av_get_random_seed());
1438
1439 /* GET requests */
59d96941 1440 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ) < 0) {
f5d33f52
JA
1441 err = AVERROR(EIO);
1442 goto fail;
1443 }
1444
1445 /* generate GET headers */
1446 snprintf(headers, sizeof(headers),
1447 "x-sessioncookie: %s\r\n"
1448 "Accept: application/x-rtsp-tunnelled\r\n"
1449 "Pragma: no-cache\r\n"
1450 "Cache-Control: no-cache\r\n",
1451 sessioncookie);
00e4a1f4 1452 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1453
1454 /* complete the connection */
62eaaeac 1455 if (ffurl_connect(rt->rtsp_hd)) {
f5d33f52
JA
1456 err = AVERROR(EIO);
1457 goto fail;
1458 }
1459
1460 /* POST requests */
59d96941 1461 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE) < 0 ) {
f5d33f52
JA
1462 err = AVERROR(EIO);
1463 goto fail;
1464 }
1465
1466 /* generate POST headers */
1467 snprintf(headers, sizeof(headers),
1468 "x-sessioncookie: %s\r\n"
1469 "Content-Type: application/x-rtsp-tunnelled\r\n"
1470 "Pragma: no-cache\r\n"
1471 "Cache-Control: no-cache\r\n"
1472 "Content-Length: 32767\r\n"
1473 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1474 sessioncookie);
00e4a1f4
JA
1475 ff_http_set_headers(rt->rtsp_hd_out, headers);
1476 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1477
a8ead332
MS
1478 /* Initialize the authentication state for the POST session. The HTTP
1479 * protocol implementation doesn't properly handle multi-pass
1480 * authentication for POST requests, since it would require one of
1481 * the following:
1482 * - implementing Expect: 100-continue, which many HTTP servers
1483 * don't support anyway, even less the RTSP servers that do HTTP
1484 * tunneling
1485 * - sending the whole POST data until getting a 401 reply specifying
1486 * what authentication method to use, then resending all that data
1487 * - waiting for potential 401 replies directly after sending the
1488 * POST header (waiting for some unspecified time)
1489 * Therefore, we copy the full auth state, which works for both basic
1490 * and digest. (For digest, we would have to synchronize the nonce
1491 * count variable between the two sessions, if we'd do more requests
1492 * with the original session, though.)
1493 */
1494 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1495
9290f15d 1496 /* complete the connection */
62eaaeac 1497 if (ffurl_connect(rt->rtsp_hd_out)) {
9290f15d
MS
1498 err = AVERROR(EIO);
1499 goto fail;
1500 }
f5d33f52 1501 } else {
48e77473 1502 /* open the tcp connection */
41874d0a 1503 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
59d96941 1504 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE) < 0) {
41874d0a
JA
1505 err = AVERROR(EIO);
1506 goto fail;
1507 }
00e4a1f4 1508 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1509 }
53620bba
RB
1510 rt->seq = 0;
1511
1869ea03 1512 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1513 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1514 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1515 NULL, 0, NI_NUMERICHOST);
1516 }
1517
c8965800
RB
1518 /* request options supported by the server; this also detects server
1519 * type */
1cf151e9 1520 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1521 cmd[0] = 0;
2e889ae4 1522 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1523 av_strlcat(cmd,
f75e3da5 1524 /*
1cf151e9
RB
1525 * The following entries are required for proper
1526 * streaming from a Realmedia server. They are
1527 * interdependent in some way although we currently
1528 * don't quite understand how. Values were copied
1529 * from mplayer SVN r23589.
f75e3da5
DB
1530 * ClientChallenge is a 16-byte ID in hex
1531 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1532 */
1533 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1534 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1535 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1536 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1537 sizeof(cmd));
b17d11c6 1538 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1539 if (reply->status_code != RTSP_STATUS_OK) {
1540 err = AVERROR_INVALIDDATA;
1541 goto fail;
1542 }
1543
1544 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1545 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1546 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1547 continue;
7a86bafa
RB
1548 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1549 rt->server_type = RTSP_SERVER_WMS;
c8965800 1550 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1551 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1552 break;
1553 }
1554
44b70ce5 1555 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1556 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1557 else if (CONFIG_RTSP_MUXER)
c2688f3a 1558 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1559 if (err)
53620bba 1560 goto fail;
53620bba 1561
8a8754d8 1562 do {
c8965800
RB
1563 int lower_transport = ff_log2_tab[lower_transport_mask &
1564 ~(lower_transport_mask - 1)];
8a8754d8 1565
fef5649a 1566 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1567 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1568 real_challenge : NULL);
8a8754d8 1569 if (err < 0)
7e6ca34f 1570 goto fail;
90abbdba
RB
1571 lower_transport_mask &= ~(1 << lower_transport);
1572 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1573 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1574 goto fail;
1575 }
1576 } while (err);
53620bba 1577
2762a7a2
MS
1578 rt->lower_transport_mask = lower_transport_mask;
1579 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1580 rt->state = RTSP_STATE_IDLE;
c8965800 1581 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1582 return 0;
1583 fail:
3307e6ea 1584 ff_rtsp_close_streams(s);
b8c2c41d 1585 ff_rtsp_close_connections(s);
35cfd646 1586 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1587 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1588 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1589 reply->status_code,
1590 s->filename);
1591 goto redirect;
1592 }
57b5555c 1593 ff_network_close();
1617ad97
FB
1594 return err;
1595}
2e802e38 1596#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1597
44b70ce5 1598#if CONFIG_RTPDEC
0e59034e 1599static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1600 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1601{
1602 RTSPState *rt = s->priv_data;
1603 RTSPStream *rtsp_st;
a8475bbd
LB
1604 int n, i, ret, tcp_fd, timeout_cnt = 0;
1605 int max_p = 0;
1606 struct pollfd *p = rt->p;
0e59034e 1607
c8965800 1608 for (;;) {
0e59034e 1609 if (url_interrupt_cb())
c76374c6 1610 return AVERROR_EXIT;
321259c1
MS
1611 if (wait_end && wait_end - av_gettime() < 0)
1612 return AVERROR(EAGAIN);
a8475bbd 1613 max_p = 0;
0e59034e 1614 if (rt->rtsp_hd) {
1869ea03 1615 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1616 p[max_p].fd = tcp_fd;
1617 p[max_p++].events = POLLIN;
0e59034e 1618 } else {
0e59034e
RB
1619 tcp_fd = -1;
1620 }
c8965800 1621 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1622 rtsp_st = rt->rtsp_streams[i];
1623 if (rtsp_st->rtp_handle) {
1869ea03 1624 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1625 p[max_p++].events = POLLIN;
bfc6db44 1626 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1627 p[max_p++].events = POLLIN;
0e59034e
RB
1628 }
1629 }
a8475bbd 1630 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1631 if (n > 0) {
a8475bbd 1632 int j = 1 - (tcp_fd == -1);
9cba6f5f 1633 timeout_cnt = 0;
c8965800 1634 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1635 rtsp_st = rt->rtsp_streams[i];
1636 if (rtsp_st->rtp_handle) {
a8475bbd 1637 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1638 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1639 if (ret > 0) {
1640 *prtsp_st = rtsp_st;
1641 return ret;
1642 }
1643 }
a8475bbd 1644 j+=2;
0e59034e
RB
1645 }
1646 }
5fe8021a 1647#if CONFIG_RTSP_DEMUXER
a8475bbd 1648 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1649 RTSPMessageHeader reply;
1650
3df54c6b 1651 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1652 if (ret < 0)
1653 return ret;
0e59034e 1654 /* XXX: parse message */
c02fd3d2 1655 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1656 return 0;
1657 }
5fe8021a 1658#endif
9cba6f5f 1659 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1660 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1661 } else if (n < 0 && errno != EINTR)
1662 return AVERROR(errno);
0e59034e
RB
1663 }
1664}
1665
0526c6f7 1666int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1667{
1668 RTSPState *rt = s->priv_data;
1669 int ret, len;
321259c1
MS
1670 RTSPStream *rtsp_st, *first_queue_st = NULL;
1671 int64_t wait_end = 0;
0e59034e 1672
b20359f5
JA
1673 if (rt->nb_byes == rt->nb_rtsp_streams)
1674 return AVERROR_EOF;
1675
0e59034e
RB
1676 /* get next frames from the same RTP packet */
1677 if (rt->cur_transport_priv) {
c8965800 1678 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1679 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1680 } else
bfc6db44 1681 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1682 if (ret == 0) {
1683 rt->cur_transport_priv = NULL;
1684 return 0;
1685 } else if (ret == 1) {
1686 return 0;
c8965800 1687 } else
0e59034e 1688 rt->cur_transport_priv = NULL;
0e59034e
RB
1689 }
1690
321259c1
MS
1691 if (rt->transport == RTSP_TRANSPORT_RTP) {
1692 int i;
1693 int64_t first_queue_time = 0;
1694 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1695 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1696 int64_t queue_time;
1697 if (!rtpctx)
1698 continue;
1699 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1700 if (queue_time && (queue_time - first_queue_time < 0 ||
1701 !first_queue_time)) {
1702 first_queue_time = queue_time;
1703 first_queue_st = rt->rtsp_streams[i];
1704 }
1705 }
1706 if (first_queue_time)
1707 wait_end = first_queue_time + s->max_delay;
1708 }
1709
0e59034e
RB
1710 /* read next RTP packet */
1711 redo:
96a7c975
MS
1712 if (!rt->recvbuf) {
1713 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1714 if (!rt->recvbuf)
1715 return AVERROR(ENOMEM);
1716 }
1717
0e59034e
RB
1718 switch(rt->lower_transport) {
1719 default:
5fe8021a 1720#if CONFIG_RTSP_DEMUXER
0e59034e 1721 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1722 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1723 break;
5fe8021a 1724#endif
0e59034e
RB
1725 case RTSP_LOWER_TRANSPORT_UDP:
1726 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1727 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1728 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1729 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1730 break;
1731 }
321259c1
MS
1732 if (len == AVERROR(EAGAIN) && first_queue_st &&
1733 rt->transport == RTSP_TRANSPORT_RTP) {
1734 rtsp_st = first_queue_st;
bfc6db44 1735 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1736 goto end;
1737 }
0e59034e
RB
1738 if (len < 0)
1739 return len;
1740 if (len == 0)
1741 return AVERROR_EOF;
c8965800 1742 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1743 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1744 } else {
bfc6db44 1745 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1746 if (ret < 0) {
1747 /* Either bad packet, or a RTCP packet. Check if the
1748 * first_rtcp_ntp_time field was initialized. */
1749 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1750 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1751 /* first_rtcp_ntp_time has been initialized for this stream,
1752 * copy the same value to all other uninitialized streams,
1753 * in order to map their timestamp origin to the same ntp time
1754 * as this one. */
1755 int i;
3a1cdcc7
MS
1756 AVStream *st = NULL;
1757 if (rtsp_st->stream_index >= 0)
1758 st = s->streams[rtsp_st->stream_index];
2cab6b48 1759 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1760 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1761 AVStream *st2 = NULL;
1762 if (rt->rtsp_streams[i]->stream_index >= 0)
1763 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1764 if (rtpctx2 && st && st2 &&
1765 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1766 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1767 rtpctx2->rtcp_ts_offset = av_rescale_q(
1768 rtpctx->rtcp_ts_offset, st->time_base,
1769 st2->time_base);
1770 }
2cab6b48
MS
1771 }
1772 }
b20359f5
JA
1773 if (ret == -RTCP_BYE) {
1774 rt->nb_byes++;
1775
1776 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1777 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1778
1779 if (rt->nb_byes == rt->nb_rtsp_streams)
1780 return AVERROR_EOF;
1781 }
2cab6b48
MS
1782 }
1783 }
321259c1 1784end:
0e59034e
RB
1785 if (ret < 0)
1786 goto redo;
c8965800 1787 if (ret == 1)
0e59034e
RB
1788 /* more packets may follow, so we save the RTP context */
1789 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1790
1791 return ret;
1792}
44b70ce5 1793#endif /* CONFIG_RTPDEC */
0e59034e 1794
44b70ce5 1795#if CONFIG_SDP_DEMUXER
cb1fdc61 1796static int sdp_probe(AVProbeData *p1)
93ced3e8 1797{
0e1ceacd 1798 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1799
3fbd12d1 1800 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1801 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1802 if (p + sizeof("c=IN IP") - 1 < p_end &&
1803 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1804 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1805
c8965800 1806 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1807 if (++p >= p_end)
cb1fdc61 1808 break;
cb1fdc61
FB
1809 if (*p == '\r')
1810 p++;
1811 }
93ced3e8
FB
1812 return 0;
1813}
1814
c8965800 1815static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1816{
8b1ab7bf 1817 RTSPState *rt = s->priv_data;
93ced3e8
FB
1818 RTSPStream *rtsp_st;
1819 int size, i, err;
1820 char *content;
1821 char url[1024];
1822
57b5555c
MS
1823 if (!ff_network_init())
1824 return AVERROR(EIO);
1825
93ced3e8
FB
1826 /* read the whole sdp file */
1827 /* XXX: better loading */
1828 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1829 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1830 if (size <= 0) {
1831 av_free(content);
1832 return AVERROR_INVALIDDATA;
1833 }
1834 content[size] ='\0';
1835
f81c7ac7 1836 err = ff_sdp_parse(s, content);
93ced3e8 1837 av_free(content);
f81c7ac7 1838 if (err) goto fail;
93ced3e8
FB
1839
1840 /* open each RTP stream */
c8965800 1841 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1842 char namebuf[50];
8b1ab7bf 1843 rtsp_st = rt->rtsp_streams[i];
115329f1 1844
3fbd12d1
MS
1845 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1846 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1847 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1848 namebuf, rtsp_st->sdp_port,
51369f28
MS
1849 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1850 rtsp_st->sdp_ttl,
1851 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
59d96941 1852 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE) < 0) {
93ced3e8
FB
1853 err = AVERROR_INVALIDDATA;
1854 goto fail;
1855 }
ee0cb67f 1856 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1857 goto fail;
93ced3e8
FB
1858 }
1859 return 0;
c8965800 1860fail:
3307e6ea 1861 ff_rtsp_close_streams(s);
57b5555c 1862 ff_network_close();
93ced3e8
FB
1863 return err;
1864}
1865
93ced3e8
FB
1866static int sdp_read_close(AVFormatContext *s)
1867{
3307e6ea 1868 ff_rtsp_close_streams(s);
57b5555c 1869 ff_network_close();
93ced3e8
FB
1870 return 0;
1871}
1872
51369f28
MS
1873static const AVClass sdp_demuxer_class = {
1874 .class_name = "SDP demuxer",
1875 .item_name = av_default_item_name,
1876 .option = sdp_options,
1877 .version = LIBAVUTIL_VERSION_INT,
1878};
1879
c6610a21 1880AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1881 .name = "sdp",
1882 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1883 .priv_data_size = sizeof(RTSPState),
1884 .read_probe = sdp_probe,
1885 .read_header = sdp_read_header,
1886 .read_packet = ff_rtsp_fetch_packet,
1887 .read_close = sdp_read_close,
51369f28 1888 .priv_class = &sdp_demuxer_class
93ced3e8 1889};
44b70ce5 1890#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1891
44b70ce5 1892#if CONFIG_RTP_DEMUXER
44594cc7
MS
1893static int rtp_probe(AVProbeData *p)
1894{
1895 if (av_strstart(p->filename, "rtp:", NULL))
1896 return AVPROBE_SCORE_MAX;
1897 return 0;
1898}
1899
1900static int rtp_read_header(AVFormatContext *s,
1901 AVFormatParameters *ap)
1902{
1903 uint8_t recvbuf[1500];
1904 char host[500], sdp[500];
1905 int ret, port;
1906 URLContext* in = NULL;
1907 int payload_type;
1908 AVCodecContext codec;
1909 struct sockaddr_storage addr;
ae628ec1 1910 AVIOContext pb;
44594cc7
MS
1911 socklen_t addrlen = sizeof(addr);
1912
1913 if (!ff_network_init())
1914 return AVERROR(EIO);
1915
59d96941 1916 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ);
44594cc7
MS
1917 if (ret)
1918 goto fail;
1919
1920 while (1) {
bc371aca 1921 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
1922 if (ret == AVERROR(EAGAIN))
1923 continue;
1924 if (ret < 0)
1925 goto fail;
1926 if (ret < 12) {
1927 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1928 continue;
1929 }
1930
1931 if ((recvbuf[0] & 0xc0) != 0x80) {
1932 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1933 "received\n");
1934 continue;
1935 }
1936
1937 payload_type = recvbuf[1] & 0x7f;
1938 break;
1939 }
1869ea03 1940 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 1941 ffurl_close(in);
44594cc7
MS
1942 in = NULL;
1943
1944 memset(&codec, 0, sizeof(codec));
1945 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1946 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1947 "without an SDP file describing it\n",
1948 payload_type);
1949 goto fail;
1950 }
1951 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1952 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1953 "properly you need an SDP file "
1954 "describing it\n");
1955 }
1956
1957 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1958 NULL, 0, s->filename);
1959
1960 snprintf(sdp, sizeof(sdp),
1961 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1962 addr.ss_family == AF_INET ? 4 : 6, host,
1963 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1964 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1965 port, payload_type);
1966 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1967
e731b8d8 1968 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
1969 s->pb = &pb;
1970
1971 /* sdp_read_header initializes this again */
1972 ff_network_close();
1973
1974 ret = sdp_read_header(s, ap);
1975 s->pb = NULL;
1976 return ret;
1977
1978fail:
1979 if (in)
e52a9145 1980 ffurl_close(in);
44594cc7
MS
1981 ff_network_close();
1982 return ret;
1983}
1984
51369f28
MS
1985static const AVClass rtp_demuxer_class = {
1986 .class_name = "RTP demuxer",
1987 .item_name = av_default_item_name,
1988 .option = rtp_options,
1989 .version = LIBAVUTIL_VERSION_INT,
1990};
1991
c6610a21 1992AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
1993 .name = "rtp",
1994 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
1995 .priv_data_size = sizeof(RTSPState),
1996 .read_probe = rtp_probe,
1997 .read_header = rtp_read_header,
1998 .read_packet = ff_rtsp_fetch_packet,
1999 .read_close = sdp_read_close,
44594cc7 2000 .flags = AVFMT_NOFILE,
51369f28 2001 .priv_class = &rtp_demuxer_class
44594cc7 2002};
44b70ce5 2003#endif /* CONFIG_RTP_DEMUXER */
44594cc7 2004