movdec: Set frame_size for AMR
[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
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;
9261e6cf
MS
175 if (handler->alloc)
176 rtsp_st->dynamic_protocol_context = handler->alloc();
003eb642
MS
177}
178
c8965800 179/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 180static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 181 AVStream *st, RTSPStream *rtsp_st,
c8965800 182 int payload_type, const char *p)
93ced3e8 183{
86b6e387 184 AVCodecContext *codec = st->codec;
93ced3e8 185 char buf[256];
d1ccf0e0
RD
186 int i;
187 AVCodec *c;
7b49ce2e 188 const char *c_name;
93ced3e8 189
d1ccf0e0 190 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
191 * see if we can handle this kind of payload.
192 * The space should normally not be there but some Real streams or
193 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
194 * have a trailing space. */
195 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 196 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
197 RTPDynamicProtocolHandler *handler =
198 ff_rtp_handler_find_by_name(buf, codec->codec_type);
199 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
200 /* If no dynamic handler was found, check with the list of standard
201 * allocated types, if such a stream for some reason happens to
202 * use a private payload type. This isn't handled in rtpdec.c, since
203 * the format name from the rtpmap line never is passed into rtpdec. */
204 if (!rtsp_st->dynamic_handler)
205 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 206 } else {
c8965800
RB
207 /* We are in a standard case
208 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 209 /* search into AVRtpPayloadTypes[] */
7ed19d7f 210 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
211 }
212
213 c = avcodec_find_decoder(codec->codec_id);
214 if (c && c->name)
7b49ce2e 215 c_name = c->name;
d1ccf0e0 216 else
170870b7 217 c_name = "(null)";
d1ccf0e0 218
7515ed0c
RB
219 get_word_sep(buf, sizeof(buf), "/", &p);
220 i = atoi(buf);
221 switch (codec->codec_type) {
72415b2a 222 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
223 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
224 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
225 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
226 if (i > 0) {
227 codec->sample_rate = i;
86b6e387 228 av_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
229 get_word_sep(buf, sizeof(buf), "/", &p);
230 i = atoi(buf);
231 if (i > 0)
232 codec->channels = i;
233 // TODO: there is a bug here; if it is a mono stream, and
234 // less than 22000Hz, faad upconverts to stereo and twice
235 // the frequency. No problem, but the sample rate is being
236 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 237 }
7515ed0c
RB
238 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
239 codec->sample_rate);
240 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
241 codec->channels);
242 break;
72415b2a 243 case AVMEDIA_TYPE_VIDEO:
7515ed0c 244 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387
MS
245 if (i > 0)
246 av_set_pts_info(st, 32, 1, i);
7515ed0c
RB
247 break;
248 default:
249 break;
250 }
251 return 0;
93ced3e8
FB
252}
253
c2bfd816 254/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
255 * is broken out as a function because it is used in rtp_h264.c, which is
256 * forthcoming. */
3307e6ea 257int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 258 char *value, int value_size)
d0deedcb 259{
30619e6e 260 *p += strspn(*p, SPACE_CHARS);
c8965800 261 if (**p) {
d0deedcb
RM
262 get_word_sep(attr, attr_size, "=", p);
263 if (**p == '=')
264 (*p)++;
265 get_word_sep(value, value_size, ";", p);
266 if (**p == ';')
267 (*p)++;
268 return 1;
269 }
270 return 0;
271}
272
93ced3e8
FB
273typedef struct SDPParseState {
274 /* SDP only */
3fbd12d1 275 struct sockaddr_storage default_ip;
c8965800
RB
276 int default_ttl;
277 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
278} SDPParseState;
279
280static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
281 int letter, const char *buf)
282{
8b1ab7bf 283 RTSPState *rt = s->priv_data;
1617ad97
FB
284 char buf1[64], st_type[64];
285 const char *p;
72415b2a 286 enum AVMediaType codec_type;
fb65d2ca 287 int payload_type, i;
1617ad97
FB
288 AVStream *st;
289 RTSPStream *rtsp_st;
3fbd12d1 290 struct sockaddr_storage sdp_ip;
93ced3e8
FB
291 int ttl;
292
dfd2a005 293 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
294
295 p = buf;
cb760a47
RB
296 if (s1->skip_media && letter != 'm')
297 return;
c8965800 298 switch (letter) {
93ced3e8
FB
299 case 'c':
300 get_word(buf1, sizeof(buf1), &p);
301 if (strcmp(buf1, "IN") != 0)
302 return;
303 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 304 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
305 return;
306 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 307 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
308 return;
309 ttl = 16;
310 if (*p == '/') {
311 p++;
312 get_word_sep(buf1, sizeof(buf1), "/", &p);
313 ttl = atoi(buf1);
314 }
315 if (s->nb_streams == 0) {
316 s1->default_ip = sdp_ip;
317 s1->default_ttl = ttl;
318 } else {
d9c0510e 319 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
320 rtsp_st->sdp_ip = sdp_ip;
321 rtsp_st->sdp_ttl = ttl;
322 }
323 break;
1617ad97 324 case 's':
d2d67e42 325 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
326 break;
327 case 'i':
328 if (s->nb_streams == 0) {
d2d67e42 329 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
330 break;
331 }
332 break;
333 case 'm':
334 /* new stream */
cb760a47 335 s1->skip_media = 0;
f011fcd6 336 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
337 get_word(st_type, sizeof(st_type), &p);
338 if (!strcmp(st_type, "audio")) {
72415b2a 339 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 340 } else if (!strcmp(st_type, "video")) {
72415b2a 341 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 342 } else if (!strcmp(st_type, "application")) {
72415b2a 343 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
344 }
345 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 346 s1->skip_media = 1;
1617ad97
FB
347 return;
348 }
1617ad97
FB
349 rtsp_st = av_mallocz(sizeof(RTSPStream));
350 if (!rtsp_st)
351 return;
8b1ab7bf
FB
352 rtsp_st->stream_index = -1;
353 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
354
355 rtsp_st->sdp_ip = s1->default_ip;
356 rtsp_st->sdp_ttl = s1->default_ttl;
357
93ced3e8
FB
358 get_word(buf1, sizeof(buf1), &p); /* port */
359 rtsp_st->sdp_port = atoi(buf1);
360
361 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 362
93ced3e8
FB
363 /* XXX: handle list of formats */
364 get_word(buf1, sizeof(buf1), &p); /* format list */
365 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 366
7ed19d7f 367 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
368 /* no corresponding stream */
369 } else {
84ad31ff 370 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
371 if (!st)
372 return;
84ad31ff 373 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 374 rtsp_st->stream_index = st->index;
01f4895c 375 st->codec->codec_type = codec_type;
d1ccf0e0 376 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 377 RTPDynamicProtocolHandler *handler;
8b1ab7bf 378 /* if standard payload type, we can find the codec right now */
bf6d9818 379 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
380 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
381 st->codec->sample_rate > 0)
86b6e387 382 av_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
383 /* Even static payload types may need a custom depacketizer */
384 handler = ff_rtp_handler_find_by_id(
385 rtsp_st->sdp_payload_type, st->codec->codec_type);
386 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
387 }
388 }
1617ad97 389 /* put a default control url */
00eb13e0 390 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 391 sizeof(rtsp_st->control_url));
1617ad97
FB
392 break;
393 case 'a':
00eb13e0
AS
394 if (av_strstart(p, "control:", &p)) {
395 if (s->nb_streams == 0) {
396 if (!strncmp(p, "rtsp://", 7))
397 av_strlcpy(rt->control_uri, p,
398 sizeof(rt->control_uri));
399 } else {
0b6a7ff4
MS
400 char proto[32];
401 /* get the control url */
d9c0510e 402 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 403
0b6a7ff4
MS
404 /* XXX: may need to add full url resolution */
405 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
406 NULL, NULL, 0, p);
407 if (proto[0] == '\0') {
408 /* relative control URL */
409 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
410 av_strlcat(rtsp_st->control_url, "/",
411 sizeof(rtsp_st->control_url));
412 av_strlcat(rtsp_st->control_url, p,
413 sizeof(rtsp_st->control_url));
414 } else
415 av_strlcpy(rtsp_st->control_url, p,
416 sizeof(rtsp_st->control_url));
00eb13e0 417 }
83d14c85 418 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 419 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 420 get_word(buf1, sizeof(buf1), &p);
93ced3e8 421 payload_type = atoi(buf1);
83d14c85 422 st = s->streams[s->nb_streams - 1];
d9c0510e 423 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
86b6e387 424 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
425 } else if (av_strstart(p, "fmtp:", &p) ||
426 av_strstart(p, "framesize:", &p)) {
93ced3e8 427 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
428 // let dynamic protocol handlers have a stab at the line.
429 get_word(buf1, sizeof(buf1), &p);
430 payload_type = atoi(buf1);
d9c0510e
MS
431 for (i = 0; i < rt->nb_rtsp_streams; i++) {
432 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
433 if (rtsp_st->sdp_payload_type == payload_type &&
434 rtsp_st->dynamic_handler &&
435 rtsp_st->dynamic_handler->parse_sdp_a_line)
436 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
437 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 438 }
c8965800 439 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
440 int64_t start, end;
441
442 // this is so that seeking on a streamed file can work.
443 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
444 s->start_time = start;
445 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
446 s->duration = (end == AV_NOPTS_VALUE) ?
447 AV_NOPTS_VALUE : end - start;
119b4668
RB
448 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
449 if (atoi(p) == 1)
450 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
451 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
452 s->nb_streams > 0) {
453 st = s->streams[s->nb_streams - 1];
454 st->codec->sample_rate = atoi(p);
1a30d541
RB
455 } else {
456 if (rt->server_type == RTSP_SERVER_WMS)
457 ff_wms_parse_sdp_a_line(s, p);
458 if (s->nb_streams > 0) {
c4a3d032
RB
459 if (rt->server_type == RTSP_SERVER_REAL)
460 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
461
d9c0510e 462 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
c4a3d032
RB
463 if (rtsp_st->dynamic_handler &&
464 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
465 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
466 s->nb_streams - 1,
c4a3d032 467 rtsp_st->dynamic_protocol_context, buf);
1a30d541 468 }
1617ad97
FB
469 }
470 break;
471 }
472}
473
0526c6f7 474int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 475{
a8475bbd 476 RTSPState *rt = s->priv_data;
1617ad97
FB
477 const char *p;
478 int letter;
9211bcdd
RB
479 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
480 * contain long SDP lines containing complete ASF Headers (several
481 * kB) or arrays of MDPR (RM stream descriptor) headers plus
482 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
483 * buffer is large.
484 *
afcea58c
JA
485 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
486 * in rtpdec_xiph.c. */
373afbaf 487 char buf[16384], *q;
93ced3e8 488 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 489
93ced3e8 490 memset(s1, 0, sizeof(SDPParseState));
1617ad97 491 p = content;
c8965800 492 for (;;) {
30619e6e 493 p += strspn(p, SPACE_CHARS);
1617ad97
FB
494 letter = *p;
495 if (letter == '\0')
496 break;
497 p++;
498 if (*p != '=')
499 goto next_line;
500 p++;
501 /* get the content */
502 q = buf;
b6892136 503 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
504 if ((q - buf) < sizeof(buf) - 1)
505 *q++ = *p;
506 p++;
507 }
508 *q = '\0';
93ced3e8 509 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
510 next_line:
511 while (*p != '\n' && *p != '\0')
512 p++;
513 if (*p == '\n')
514 p++;
515 }
a8475bbd
LB
516 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
517 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
518 return 0;
519}
44b70ce5 520#endif /* CONFIG_RTPDEC */
1617ad97 521
93e7490e
MS
522void ff_rtsp_undo_setup(AVFormatContext *s)
523{
524 RTSPState *rt = s->priv_data;
525 int i;
526
527 for (i = 0; i < rt->nb_rtsp_streams; i++) {
528 RTSPStream *rtsp_st = rt->rtsp_streams[i];
529 if (!rtsp_st)
530 continue;
531 if (rtsp_st->transport_priv) {
532 if (s->oformat) {
533 AVFormatContext *rtpctx = rtsp_st->transport_priv;
534 av_write_trailer(rtpctx);
535 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
536 uint8_t *ptr;
6dc7d80d 537 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
538 av_free(ptr);
539 } else {
22a3212e 540 avio_close(rtpctx->pb);
93e7490e 541 }
b22dbb29 542 avformat_free_context(rtpctx);
93e7490e
MS
543 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
544 ff_rdt_parse_close(rtsp_st->transport_priv);
545 else if (CONFIG_RTPDEC)
bfc6db44 546 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
547 }
548 rtsp_st->transport_priv = NULL;
549 if (rtsp_st->rtp_handle)
e52a9145 550 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
551 rtsp_st->rtp_handle = NULL;
552 }
553}
554
1ced9da3 555/* close and free RTSP streams */
3307e6ea 556void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 557{
52aa4338 558 RTSPState *rt = s->priv_data;
1ced9da3
LA
559 int i;
560 RTSPStream *rtsp_st;
561
93e7490e 562 ff_rtsp_undo_setup(s);
c8965800 563 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
564 rtsp_st = rt->rtsp_streams[i];
565 if (rtsp_st) {
1ced9da3 566 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 567 rtsp_st->dynamic_handler->free(
c8965800 568 rtsp_st->dynamic_protocol_context);
ea7f0807 569 av_free(rtsp_st);
1ced9da3
LA
570 }
571 }
572 av_free(rt->rtsp_streams);
573 if (rt->asf_ctx) {
574 av_close_input_stream (rt->asf_ctx);
575 rt->asf_ctx = NULL;
576 }
a8475bbd 577 av_free(rt->p);
96a7c975 578 av_free(rt->recvbuf);
1ced9da3
LA
579}
580
c8965800 581static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
582{
583 RTSPState *rt = s->priv_data;
584 AVStream *st = NULL;
585
586 /* open the RTP context */
587 if (rtsp_st->stream_index >= 0)
588 st = s->streams[rtsp_st->stream_index];
589 if (!st)
590 s->ctx_flags |= AVFMTCTX_NOHEADER;
591
44b70ce5 592 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
593 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
594 rtsp_st->rtp_handle,
595 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 596 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 597 rtsp_st->rtp_handle = NULL;
44b70ce5 598 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
599 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
600 rtsp_st->dynamic_protocol_context,
601 rtsp_st->dynamic_handler);
44b70ce5 602 else if (CONFIG_RTPDEC)
bfc6db44 603 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
604 rtsp_st->sdp_payload_type,
605 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
606 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
607
608 if (!rtsp_st->transport_priv) {
609 return AVERROR(ENOMEM);
44b70ce5 610 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 611 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
612 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
613 rtsp_st->dynamic_protocol_context,
614 rtsp_st->dynamic_handler);
1ced9da3
LA
615 }
616 }
617
618 return 0;
619}
620
6f5a3d0a 621#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
622static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
623{
624 const char *p;
625 int v;
626
627 p = *pp;
30619e6e 628 p += strspn(p, SPACE_CHARS);
1617ad97
FB
629 v = strtol(p, (char **)&p, 10);
630 if (*p == '-') {
631 p++;
632 *min_ptr = v;
633 v = strtol(p, (char **)&p, 10);
634 *max_ptr = v;
635 } else {
636 *min_ptr = v;
637 *max_ptr = v;
638 }
639 *pp = p;
640}
641
642/* XXX: only one transport specification is parsed */
a9e534d5 643static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
644{
645 char transport_protocol[16];
646 char profile[16];
647 char lower_transport[16];
648 char parameter[16];
649 RTSPTransportField *th;
650 char buf[256];
115329f1 651
1617ad97 652 reply->nb_transports = 0;
115329f1 653
c8965800 654 for (;;) {
30619e6e 655 p += strspn(p, SPACE_CHARS);
1617ad97
FB
656 if (*p == '\0')
657 break;
658
659 th = &reply->transports[reply->nb_transports];
660
115329f1 661 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 662 "/", &p);
e1502118 663 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
664 get_word_sep(profile, sizeof(profile), "/;,", &p);
665 lower_transport[0] = '\0';
666 /* rtp/avp/<protocol> */
667 if (*p == '/') {
7ecc634e
LB
668 get_word_sep(lower_transport, sizeof(lower_transport),
669 ";,", &p);
119b4668
RB
670 }
671 th->transport = RTSP_TRANSPORT_RTP;
672 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
673 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 674 /* x-pn-tng/<protocol> */
e1502118
LB
675 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
676 profile[0] = '\0';
119b4668 677 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 678 }
b6892136 679 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 680 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 681 else
90abbdba 682 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 683
1617ad97
FB
684 if (*p == ';')
685 p++;
686 /* get each parameter */
687 while (*p != '\0' && *p != ',') {
688 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
689 if (!strcmp(parameter, "port")) {
690 if (*p == '=') {
691 p++;
692 rtsp_parse_range(&th->port_min, &th->port_max, &p);
693 }
694 } else if (!strcmp(parameter, "client_port")) {
695 if (*p == '=') {
696 p++;
115329f1 697 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
698 &th->client_port_max, &p);
699 }
700 } else if (!strcmp(parameter, "server_port")) {
701 if (*p == '=') {
702 p++;
115329f1 703 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
704 &th->server_port_max, &p);
705 }
706 } else if (!strcmp(parameter, "interleaved")) {
707 if (*p == '=') {
708 p++;
115329f1 709 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
710 &th->interleaved_max, &p);
711 }
712 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
713 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
714 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
715 } else if (!strcmp(parameter, "ttl")) {
716 if (*p == '=') {
717 p++;
718 th->ttl = strtol(p, (char **)&p, 10);
719 }
720 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
721 if (*p == '=') {
722 p++;
723 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 724 get_sockaddr(buf, &th->destination);
1617ad97 725 }
619298a8
JW
726 } else if (!strcmp(parameter, "source")) {
727 if (*p == '=') {
728 p++;
729 get_word_sep(buf, sizeof(buf), ";,", &p);
730 av_strlcpy(th->source, buf, sizeof(th->source));
731 }
1617ad97 732 }
619298a8 733
1617ad97
FB
734 while (*p != ';' && *p != '\0' && *p != ',')
735 p++;
736 if (*p == ';')
737 p++;
738 }
739 if (*p == ',')
740 p++;
741
742 reply->nb_transports++;
743 }
744}
745
29db7c3a
MS
746static void handle_rtp_info(RTSPState *rt, const char *url,
747 uint32_t seq, uint32_t rtptime)
748{
749 int i;
750 if (!rtptime || !url[0])
751 return;
752 if (rt->transport != RTSP_TRANSPORT_RTP)
753 return;
754 for (i = 0; i < rt->nb_rtsp_streams; i++) {
755 RTSPStream *rtsp_st = rt->rtsp_streams[i];
756 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
757 if (!rtpctx)
758 continue;
759 if (!strcmp(rtsp_st->control_url, url)) {
760 rtpctx->base_timestamp = rtptime;
761 break;
762 }
763 }
764}
765
766static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
767{
768 int read = 0;
769 char key[20], value[1024], url[1024] = "";
770 uint32_t seq = 0, rtptime = 0;
771
772 for (;;) {
773 p += strspn(p, SPACE_CHARS);
774 if (!*p)
775 break;
776 get_word_sep(key, sizeof(key), "=", &p);
777 if (*p != '=')
778 break;
779 p++;
780 get_word_sep(value, sizeof(value), ";, ", &p);
781 read++;
782 if (!strcmp(key, "url"))
783 av_strlcpy(url, value, sizeof(url));
784 else if (!strcmp(key, "seq"))
4515f9b5 785 seq = strtoul(value, NULL, 10);
29db7c3a 786 else if (!strcmp(key, "rtptime"))
4515f9b5 787 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
788 if (*p == ',') {
789 handle_rtp_info(rt, url, seq, rtptime);
790 url[0] = '\0';
791 seq = rtptime = 0;
792 read = 0;
793 }
794 if (*p)
795 p++;
796 }
797 if (read > 0)
798 handle_rtp_info(rt, url, seq, rtptime);
799}
800
2626308a 801void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 802 RTSPState *rt, const char *method)
1617ad97
FB
803{
804 const char *p;
805
806 /* NOTE: we do case independent match for broken servers */
807 p = buf;
f7d78f36 808 if (av_stristart(p, "Session:", &p)) {
30e79845 809 int t;
1617ad97 810 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
811 if (av_stristart(p, ";timeout=", &p) &&
812 (t = strtol(p, NULL, 10)) > 0) {
813 reply->timeout = t;
814 }
f7d78f36 815 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 816 reply->content_length = strtol(p, NULL, 10);
f7d78f36 817 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 818 rtsp_parse_transport(reply, p);
f7d78f36 819 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 820 reply->seq = strtol(p, NULL, 10);
f7d78f36 821 } else if (av_stristart(p, "Range:", &p)) {
31693e00 822 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 823 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 824 p += strspn(p, SPACE_CHARS);
30aa6aed 825 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 826 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 827 p += strspn(p, SPACE_CHARS);
7a86bafa 828 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
829 } else if (av_stristart(p, "Notice:", &p) ||
830 av_stristart(p, "X-Notice:", &p)) {
831 reply->notice = strtol(p, NULL, 10);
d243ba30 832 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 833 p += strspn(p, SPACE_CHARS);
d243ba30 834 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 835 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 836 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
837 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
838 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 839 p += strspn(p, SPACE_CHARS);
acc9ed14 840 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 841 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 842 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
843 if (method && !strcmp(method, "DESCRIBE"))
844 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
845 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
846 p += strspn(p, SPACE_CHARS);
847 if (method && !strcmp(method, "PLAY"))
848 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
849 } else if (av_stristart(p, "Public:", &p) && rt) {
850 if (strstr(p, "GET_PARAMETER") &&
851 method && !strcmp(method, "OPTIONS"))
852 rt->get_parameter_supported = 1;
30eae325
MS
853 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
854 p += strspn(p, SPACE_CHARS);
855 rt->accept_dynamic_rate = atoi(p);
1617ad97
FB
856 }
857}
858
b7b8fc34 859/* skip a RTP/TCP interleaved packet */
ec55edba 860void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
861{
862 RTSPState *rt = s->priv_data;
863 int ret, len, len1;
864 uint8_t buf[1024];
865
dce37564 866 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
867 if (ret != 3)
868 return;
80fb8234 869 len = AV_RB16(buf + 1);
67c9cd69 870
dfd2a005 871 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 872
b7b8fc34
FB
873 /* skip payload */
874 while (len > 0) {
875 len1 = len;
876 if (len1 > sizeof(buf))
877 len1 = sizeof(buf);
dce37564 878 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
879 if (ret != len1)
880 return;
881 len -= len1;
882 }
883}
1617ad97 884
3307e6ea 885int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 886 unsigned char **content_ptr,
3df54c6b 887 int return_on_interleaved_data, const char *method)
1617ad97
FB
888{
889 RTSPState *rt = s->priv_data;
890 char buf[4096], buf1[1024], *q;
891 unsigned char ch;
892 const char *p;
7e726132 893 int ret, content_length, line_count = 0;
1617ad97
FB
894 unsigned char *content = NULL;
895
d541a7d2 896 memset(reply, 0, sizeof(*reply));
1617ad97 897
1617ad97 898 /* parse reply (XXX: use buffers) */
1617ad97 899 rt->last_reply[0] = '\0';
c8965800 900 for (;;) {
1617ad97 901 q = buf;
c8965800 902 for (;;) {
dce37564 903 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 904 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 905 if (ret != 1)
2401660d 906 return AVERROR_EOF;
1617ad97
FB
907 if (ch == '\n')
908 break;
b7b8fc34
FB
909 if (ch == '$') {
910 /* XXX: only parse it if first char on line ? */
7e726132
RB
911 if (return_on_interleaved_data) {
912 return 1;
913 } else
ec55edba 914 ff_rtsp_skip_packet(s);
b7b8fc34 915 } else if (ch != '\r') {
1617ad97
FB
916 if ((q - buf) < sizeof(buf) - 1)
917 *q++ = ch;
918 }
919 }
920 *q = '\0';
67c9cd69 921
dfd2a005 922 av_dlog(s, "line='%s'\n", buf);
67c9cd69 923
1617ad97
FB
924 /* test if last line */
925 if (buf[0] == '\0')
926 break;
927 p = buf;
928 if (line_count == 0) {
929 /* get reply code */
930 get_word(buf1, sizeof(buf1), &p);
931 get_word(buf1, sizeof(buf1), &p);
932 reply->status_code = atoi(buf1);
d93fdcbf 933 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 934 } else {
77223c53 935 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
936 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
937 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
938 }
939 line_count++;
940 }
115329f1 941
1617ad97 942 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 943 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 944
1617ad97
FB
945 content_length = reply->content_length;
946 if (content_length > 0) {
947 /* leave some room for a trailing '\0' (useful for simple parsing) */
948 content = av_malloc(content_length + 1);
dce37564 949 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
950 content[content_length] = '\0';
951 }
952 if (content_ptr)
953 *content_ptr = content;
e2e2e7dd
AB
954 else
955 av_free(content);
7e726132 956
7ed8211b
LB
957 if (rt->seq != reply->seq) {
958 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
959 rt->seq, reply->seq);
960 }
961
fccb1770
RB
962 /* EOS */
963 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
964 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 965 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 966 rt->state = RTSP_STATE_IDLE;
c8965800 967 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 968 return AVERROR(EIO); /* data or server error */
c8965800 969 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
970 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
971 return AVERROR(EPERM);
972
7e726132 973 return 0;
1617ad97
FB
974}
975
57c4d01e
DEP
976/**
977 * Send a command to the RTSP server without waiting for the reply.
978 *
979 * @param s RTSP (de)muxer context
980 * @param method the method for the request
981 * @param url the target url for the request
982 * @param headers extra header lines to include in the request
983 * @param send_content if non-null, the data to send as request body content
984 * @param send_content_length the length of the send_content data, or 0 if
985 * send_content is null
986 *
987 * @return zero if success, nonzero otherwise
988 */
989static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
990 const char *method, const char *url,
991 const char *headers,
992 const unsigned char *send_content,
993 int send_content_length)
29b9f58b
RB
994{
995 RTSPState *rt = s->priv_data;
f5d33f52
JA
996 char buf[4096], *out_buf;
997 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 998
f5d33f52
JA
999 /* Add in RTSP headers */
1000 out_buf = buf;
29b9f58b 1001 rt->seq++;
b17d11c6
MS
1002 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1003 if (headers)
1004 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1005 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1006 if (rt->session_id[0] != '\0' && (!headers ||
1007 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1008 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1009 }
aa8bf2fb
MS
1010 if (rt->auth[0]) {
1011 char *str = ff_http_auth_create_response(&rt->auth_state,
1012 rt->auth, url, method);
1013 if (str)
1014 av_strlcat(buf, str, sizeof(buf));
1015 av_free(str);
1016 }
dfd017bf
MS
1017 if (send_content_length > 0 && send_content)
1018 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1019 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1020
f5d33f52
JA
1021 /* base64 encode rtsp if tunneling */
1022 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1023 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1024 out_buf = base64buf;
1025 }
1026
dfd2a005 1027 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1028
925e908b 1029 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1030 if (send_content_length > 0 && send_content) {
1031 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1032 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1033 "with content data not supported\n");
1034 return AVERROR_PATCHWELCOME;
1035 }
925e908b 1036 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1037 }
30e79845 1038 rt->last_cmd_time = av_gettime();
d0382374
JA
1039
1040 return 0;
30e79845
RB
1041}
1042
d0382374 1043int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1044 const char *url, const char *headers)
dfd017bf 1045{
d0382374 1046 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1047}
1048
d0382374 1049int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1050 const char *headers, RTSPMessageHeader *reply,
1051 unsigned char **content_ptr)
30e79845 1052{
d0382374 1053 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1054 content_ptr, NULL, 0);
29b9f58b
RB
1055}
1056
d0382374 1057int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1058 const char *method, const char *url,
1059 const char *header,
1060 RTSPMessageHeader *reply,
1061 unsigned char **content_ptr,
1062 const unsigned char *send_content,
1063 int send_content_length)
dfd017bf 1064{
30af0779
MS
1065 RTSPState *rt = s->priv_data;
1066 HTTPAuthType cur_auth_type;
d0382374 1067 int ret;
30af0779
MS
1068
1069retry:
1070 cur_auth_type = rt->auth_state.auth_type;
d0382374 1071 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1072 send_content,
1073 send_content_length)))
d0382374 1074 return ret;
dfd017bf 1075
3df54c6b 1076 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1077 return ret;
30af0779
MS
1078
1079 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1080 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1081 goto retry;
d0382374 1082
bf55cf19 1083 if (reply->status_code > 400){
d93fdcbf 1084 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1085 method,
d93fdcbf
LB
1086 reply->status_code,
1087 reply->reason);
bf55cf19
LB
1088 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1089 }
1090
d0382374 1091 return 0;
dfd017bf
MS
1092}
1093
fef5649a 1094int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1095 int lower_transport, const char *real_challenge)
1617ad97
FB
1096{
1097 RTSPState *rt = s->priv_data;
f830c9a4 1098 int rtx, j, i, err, interleave = 0;
1617ad97 1099 RTSPStream *rtsp_st;
a9e534d5 1100 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1101 char cmd[2048];
e9dea59f
RB
1102 const char *trans_pref;
1103
119b4668 1104 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1105 trans_pref = "x-pn-tng";
1106 else
1107 trans_pref = "RTP/AVP";
115329f1 1108
30e79845
RB
1109 /* default timeout: 1 minute */
1110 rt->timeout = 60;
1111
1617ad97
FB
1112 /* for each stream, make the setup request */
1113 /* XXX: we assume the same server is used for the control of each
c8965800 1114 * RTSP stream */
d1ccf0e0 1115
c8965800 1116 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1117 char transport[2048];
1118
f75e3da5 1119 /*
f830c9a4
RB
1120 * WMS serves all UDP data over a single connection, the RTX, which
1121 * isn't necessarily the first in the SDP but has to be the first
1122 * to be set up, else the second/third SETUP will fail with a 461.
1123 */
1124 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1125 rt->server_type == RTSP_SERVER_WMS) {
1126 if (i == 0) {
1127 /* rtx first */
1128 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1129 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1130 if (len >= 4 &&
c8965800
RB
1131 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1132 "/rtx"))
f830c9a4
RB
1133 break;
1134 }
1135 if (rtx == rt->nb_rtsp_streams)
1136 return -1; /* no RTX found */
1137 rtsp_st = rt->rtsp_streams[rtx];
1138 } else
1139 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1140 } else
2fea9650 1141 rtsp_st = rt->rtsp_streams[i];
1617ad97 1142
1617ad97 1143 /* RTP/UDP */
90abbdba 1144 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1145 char buf[256];
85fb7b34 1146
f830c9a4
RB
1147 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1148 port = reply->transports[0].client_port_min;
1149 goto have_port;
1150 }
1151
85fb7b34 1152 /* first try in specified port range */
d1ccf0e0 1153 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1154 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1155 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1156 "?localport=%d", j);
c8965800
RB
1157 /* we will use two ports per rtp stream (rtp and rtcp) */
1158 j += 2;
59d96941 1159 if (ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE) == 0)
85fb7b34
FB
1160 goto rtp_opened;
1161 }
1617ad97 1162 }
85fb7b34 1163
a3b058b7
MS
1164 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1165 err = AVERROR(EIO);
1166 goto fail;
85fb7b34
FB
1167
1168 rtp_opened:
bfc6db44 1169 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1170 have_port:
0ad306bc 1171 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1172 "%s/UDP;", trans_pref);
1173 if (rt->server_type != RTSP_SERVER_REAL)
1174 av_strlcat(transport, "unicast;", sizeof(transport));
1175 av_strlcatf(transport, sizeof(transport),
1176 "client_port=%d", port);
f830c9a4
RB
1177 if (rt->transport == RTSP_TRANSPORT_RTP &&
1178 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1179 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1180 }
1181
1182 /* RTP/TCP */
90abbdba 1183 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1184 /* For WMS streams, the application streams are only used for
090438cc
RB
1185 * UDP. When trying to set it up for TCP streams, the server
1186 * will return an error. Therefore, we skip those streams. */
1187 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1188 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1189 AVMEDIA_TYPE_DATA)
090438cc 1190 continue;
0ad306bc 1191 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1192 "%s/TCP;", trans_pref);
895678f8 1193 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1194 av_strlcat(transport, "unicast;", sizeof(transport));
1195 av_strlcatf(transport, sizeof(transport),
1196 "interleaved=%d-%d",
1197 interleave, interleave + 1);
1198 interleave += 2;
1617ad97
FB
1199 }
1200
90abbdba 1201 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1202 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1203 "%s/UDP;multicast", trans_pref);
1617ad97 1204 }
69adcc4f
MS
1205 if (s->oformat) {
1206 av_strlcat(transport, ";mode=receive", sizeof(transport));
1207 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1208 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1209 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1210 snprintf(cmd, sizeof(cmd),
b6892136 1211 "Transport: %s\r\n",
b17d11c6 1212 transport);
76b0d03d
MS
1213 if (rt->accept_dynamic_rate)
1214 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1215 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1216 char real_res[41], real_csum[9];
1217 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1218 real_challenge);
1219 av_strlcatf(cmd, sizeof(cmd),
1220 "If-Match: %s\r\n"
1221 "RealChallenge2: %s, sd=%s\r\n",
1222 rt->session_id, real_res, real_csum);
1223 }
b17d11c6 1224 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1225 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1226 err = 1;
1227 goto fail;
7e6ca34f
RB
1228 } else if (reply->status_code != RTSP_STATUS_OK ||
1229 reply->nb_transports != 1) {
1617ad97
FB
1230 err = AVERROR_INVALIDDATA;
1231 goto fail;
1232 }
1233
1234 /* XXX: same protocol for all streams is required */
1235 if (i > 0) {
119b4668
RB
1236 if (reply->transports[0].lower_transport != rt->lower_transport ||
1237 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1238 err = AVERROR_INVALIDDATA;
1239 goto fail;
1240 }
1241 } else {
90abbdba 1242 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1243 rt->transport = reply->transports[0].transport;
1617ad97
FB
1244 }
1245
8c579c1c
MS
1246 /* Fail if the server responded with another lower transport mode
1247 * than what we requested. */
1248 if (reply->transports[0].lower_transport != lower_transport) {
1249 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1250 err = AVERROR_INVALIDDATA;
1251 goto fail;
1617ad97
FB
1252 }
1253
90abbdba
RB
1254 switch(reply->transports[0].lower_transport) {
1255 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1256 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1257 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1258 break;
115329f1 1259
c8965800 1260 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1261 char url[1024], options[30] = "";
c8965800 1262
9867aea5 1263 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1264 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1265 /* Use source address if specified */
1266 if (reply->transports[0].source[0]) {
1267 ff_url_join(url, sizeof(url), "rtp", NULL,
1268 reply->transports[0].source,
d8407339 1269 reply->transports[0].server_port_min, "%s", options);
619298a8 1270 } else {
7bac991f 1271 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1272 reply->transports[0].server_port_min, "%s", options);
619298a8 1273 }
c8965800 1274 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1275 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1276 err = AVERROR_INVALIDDATA;
1277 goto fail;
1617ad97 1278 }
9c8fa20d
MS
1279 /* Try to initialize the connection state in a
1280 * potential NAT router by sending dummy packets.
1281 * RTP/RTCP dummy packets are used for RDT, too.
1282 */
44b70ce5
MS
1283 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1284 CONFIG_RTPDEC)
bfc6db44 1285 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1286 break;
c8965800
RB
1287 }
1288 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1289 char url[1024], namebuf[50];
1290 struct sockaddr_storage addr;
c8965800
RB
1291 int port, ttl;
1292
7934b15d
MS
1293 if (reply->transports[0].destination.ss_family) {
1294 addr = reply->transports[0].destination;
c8965800
RB
1295 port = reply->transports[0].port_min;
1296 ttl = reply->transports[0].ttl;
1297 } else {
7934b15d 1298 addr = rtsp_st->sdp_ip;
c8965800
RB
1299 port = rtsp_st->sdp_port;
1300 ttl = rtsp_st->sdp_ttl;
1301 }
7934b15d
MS
1302 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1303 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1304 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1305 port, "?ttl=%d", ttl);
59d96941 1306 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE) < 0) {
c8965800
RB
1307 err = AVERROR_INVALIDDATA;
1308 goto fail;
1617ad97
FB
1309 }
1310 break;
1311 }
c8965800 1312 }
d1ccf0e0 1313
ee0cb67f 1314 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1315 goto fail;
1617ad97
FB
1316 }
1317
30e79845
RB
1318 if (reply->timeout > 0)
1319 rt->timeout = reply->timeout;
1320
2e889ae4 1321 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1322 rt->need_subscription = 1;
1323
53620bba
RB
1324 return 0;
1325
1326fail:
aeb2de1c 1327 ff_rtsp_undo_setup(s);
53620bba
RB
1328 return err;
1329}
1330
b8c2c41d
JA
1331void ff_rtsp_close_connections(AVFormatContext *s)
1332{
1333 RTSPState *rt = s->priv_data;
e52a9145
AK
1334 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1335 ffurl_close(rt->rtsp_hd);
6217b645 1336 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1337}
1338
3307e6ea 1339int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1340{
1341 RTSPState *rt = s->priv_data;
921da217
LB
1342 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1343 char *option_list, *option, *filename;
03f8fc08 1344 int port, err, tcp_fd;
354b7573 1345 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1346 int lower_transport_mask = 0;
2762a7a2 1347 char real_challenge[64] = "";
03f8fc08
MS
1348 struct sockaddr_storage peer;
1349 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1350
1351 if (!ff_network_init())
1352 return AVERROR(EIO);
eca4850c 1353
f5d33f52 1354 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1355 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1356 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1357 rt->control_transport = RTSP_MODE_TUNNEL;
1358 }
1359 /* Only pass through valid flags from here */
1360 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1361
1362redirect:
1363 lower_transport_mask = rt->lower_transport_mask;
53620bba 1364 /* extract hostname and port */
f3bfe388 1365 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1366 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1367 if (*auth) {
aa8bf2fb 1368 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1369 }
53620bba
RB
1370 if (port < 0)
1371 port = RTSP_DEFAULT_PORT;
1372
eca4850c 1373#if FF_API_RTSP_URL_OPTIONS
53620bba 1374 /* search for options */
602eb779 1375 option_list = strrchr(path, '?');
53620bba 1376 if (option_list) {
2a21adf9
MS
1377 /* Strip out the RTSP specific options, write out the rest of
1378 * the options back into the same string. */
1379 filename = option_list;
c8965800 1380 while (option_list) {
eca4850c 1381 int handled = 1;
53620bba 1382 /* move the option pointer */
921da217 1383 option = ++option_list;
53620bba
RB
1384 option_list = strchr(option_list, '&');
1385 if (option_list)
921da217
LB
1386 *option_list = 0;
1387
53620bba 1388 /* handle the options */
c8965800 1389 if (!strcmp(option, "udp")) {
7a033e08 1390 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1391 } else if (!strcmp(option, "multicast")) {
7a033e08 1392 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1393 } else if (!strcmp(option, "tcp")) {
7a033e08 1394 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1395 } else if(!strcmp(option, "http")) {
1396 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1397 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7 1398 } else if (!strcmp(option, "filter_src")) {
9867aea5 1399 rt->rtsp_flags |= RTSP_FLAG_FILTER_SRC;
c8965800 1400 } else {
2a21adf9
MS
1401 /* Write options back into the buffer, using memmove instead
1402 * of strcpy since the strings may overlap. */
1403 int len = strlen(option);
1404 memmove(++filename, option, len);
1405 filename += len;
921da217 1406 if (option_list) *filename = '&';
eca4850c 1407 handled = 0;
921da217 1408 }
eca4850c
MS
1409 if (handled)
1410 av_log(s, AV_LOG_WARNING, "Options passed via URL are "
1411 "deprecated, use -rtsp_transport "
1412 "and -rtsp_flags instead.\n");
53620bba 1413 }
921da217 1414 *filename = 0;
53620bba 1415 }
eca4850c 1416#endif
53620bba 1417
90abbdba 1418 if (!lower_transport_mask)
2a1d51c5 1419 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1420
3e24c770 1421 if (s->oformat) {
b7dc88fc
MS
1422 /* Only UDP or TCP - UDP multicast isn't supported. */
1423 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1424 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1425 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1426 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1427 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1428 err = AVERROR(EINVAL);
1429 goto fail;
1430 }
1431 }
1432
4bc5cc23
MS
1433 /* Construct the URI used in request; this is similar to s->filename,
1434 * but with authentication credentials removed and RTSP specific options
1435 * stripped out. */
1436 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1437 host, port, "%s", path);
1438
f5d33f52
JA
1439 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1440 /* set up initial handshake for tunneling */
1441 char httpname[1024];
1442 char sessioncookie[17];
1443 char headers[1024];
1444
10ed37b5 1445 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1446 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1447 av_get_random_seed(), av_get_random_seed());
1448
1449 /* GET requests */
59d96941 1450 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ) < 0) {
f5d33f52
JA
1451 err = AVERROR(EIO);
1452 goto fail;
1453 }
1454
1455 /* generate GET headers */
1456 snprintf(headers, sizeof(headers),
1457 "x-sessioncookie: %s\r\n"
1458 "Accept: application/x-rtsp-tunnelled\r\n"
1459 "Pragma: no-cache\r\n"
1460 "Cache-Control: no-cache\r\n",
1461 sessioncookie);
00e4a1f4 1462 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1463
1464 /* complete the connection */
62eaaeac 1465 if (ffurl_connect(rt->rtsp_hd)) {
f5d33f52
JA
1466 err = AVERROR(EIO);
1467 goto fail;
1468 }
1469
1470 /* POST requests */
59d96941 1471 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE) < 0 ) {
f5d33f52
JA
1472 err = AVERROR(EIO);
1473 goto fail;
1474 }
1475
1476 /* generate POST headers */
1477 snprintf(headers, sizeof(headers),
1478 "x-sessioncookie: %s\r\n"
1479 "Content-Type: application/x-rtsp-tunnelled\r\n"
1480 "Pragma: no-cache\r\n"
1481 "Cache-Control: no-cache\r\n"
1482 "Content-Length: 32767\r\n"
1483 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1484 sessioncookie);
00e4a1f4
JA
1485 ff_http_set_headers(rt->rtsp_hd_out, headers);
1486 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1487
a8ead332
MS
1488 /* Initialize the authentication state for the POST session. The HTTP
1489 * protocol implementation doesn't properly handle multi-pass
1490 * authentication for POST requests, since it would require one of
1491 * the following:
1492 * - implementing Expect: 100-continue, which many HTTP servers
1493 * don't support anyway, even less the RTSP servers that do HTTP
1494 * tunneling
1495 * - sending the whole POST data until getting a 401 reply specifying
1496 * what authentication method to use, then resending all that data
1497 * - waiting for potential 401 replies directly after sending the
1498 * POST header (waiting for some unspecified time)
1499 * Therefore, we copy the full auth state, which works for both basic
1500 * and digest. (For digest, we would have to synchronize the nonce
1501 * count variable between the two sessions, if we'd do more requests
1502 * with the original session, though.)
1503 */
1504 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1505
9290f15d 1506 /* complete the connection */
62eaaeac 1507 if (ffurl_connect(rt->rtsp_hd_out)) {
9290f15d
MS
1508 err = AVERROR(EIO);
1509 goto fail;
1510 }
f5d33f52 1511 } else {
48e77473 1512 /* open the tcp connection */
41874d0a 1513 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
59d96941 1514 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE) < 0) {
41874d0a
JA
1515 err = AVERROR(EIO);
1516 goto fail;
1517 }
00e4a1f4 1518 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1519 }
53620bba
RB
1520 rt->seq = 0;
1521
1869ea03 1522 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1523 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1524 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1525 NULL, 0, NI_NUMERICHOST);
1526 }
1527
c8965800
RB
1528 /* request options supported by the server; this also detects server
1529 * type */
1cf151e9 1530 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1531 cmd[0] = 0;
2e889ae4 1532 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1533 av_strlcat(cmd,
f75e3da5 1534 /*
1cf151e9
RB
1535 * The following entries are required for proper
1536 * streaming from a Realmedia server. They are
1537 * interdependent in some way although we currently
1538 * don't quite understand how. Values were copied
1539 * from mplayer SVN r23589.
f75e3da5
DB
1540 * ClientChallenge is a 16-byte ID in hex
1541 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1542 */
1543 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1544 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1545 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1546 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1547 sizeof(cmd));
b17d11c6 1548 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1549 if (reply->status_code != RTSP_STATUS_OK) {
1550 err = AVERROR_INVALIDDATA;
1551 goto fail;
1552 }
1553
1554 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1555 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1556 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1557 continue;
7a86bafa
RB
1558 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1559 rt->server_type = RTSP_SERVER_WMS;
c8965800 1560 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1561 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1562 break;
1563 }
1564
44b70ce5 1565 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1566 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1567 else if (CONFIG_RTSP_MUXER)
c2688f3a 1568 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1569 if (err)
53620bba 1570 goto fail;
53620bba 1571
8a8754d8 1572 do {
c8965800
RB
1573 int lower_transport = ff_log2_tab[lower_transport_mask &
1574 ~(lower_transport_mask - 1)];
8a8754d8 1575
fef5649a 1576 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1577 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1578 real_challenge : NULL);
8a8754d8 1579 if (err < 0)
7e6ca34f 1580 goto fail;
90abbdba
RB
1581 lower_transport_mask &= ~(1 << lower_transport);
1582 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1583 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1584 goto fail;
1585 }
1586 } while (err);
53620bba 1587
2762a7a2
MS
1588 rt->lower_transport_mask = lower_transport_mask;
1589 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1590 rt->state = RTSP_STATE_IDLE;
c8965800 1591 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1592 return 0;
1593 fail:
3307e6ea 1594 ff_rtsp_close_streams(s);
b8c2c41d 1595 ff_rtsp_close_connections(s);
35cfd646 1596 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1597 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1598 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1599 reply->status_code,
1600 s->filename);
1601 goto redirect;
1602 }
57b5555c 1603 ff_network_close();
1617ad97
FB
1604 return err;
1605}
2e802e38 1606#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1607
44b70ce5 1608#if CONFIG_RTPDEC
0e59034e 1609static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1610 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1611{
1612 RTSPState *rt = s->priv_data;
1613 RTSPStream *rtsp_st;
a8475bbd
LB
1614 int n, i, ret, tcp_fd, timeout_cnt = 0;
1615 int max_p = 0;
1616 struct pollfd *p = rt->p;
0e59034e 1617
c8965800 1618 for (;;) {
0e59034e 1619 if (url_interrupt_cb())
c76374c6 1620 return AVERROR_EXIT;
321259c1
MS
1621 if (wait_end && wait_end - av_gettime() < 0)
1622 return AVERROR(EAGAIN);
a8475bbd 1623 max_p = 0;
0e59034e 1624 if (rt->rtsp_hd) {
1869ea03 1625 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1626 p[max_p].fd = tcp_fd;
1627 p[max_p++].events = POLLIN;
0e59034e 1628 } else {
0e59034e
RB
1629 tcp_fd = -1;
1630 }
c8965800 1631 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1632 rtsp_st = rt->rtsp_streams[i];
1633 if (rtsp_st->rtp_handle) {
1869ea03 1634 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1635 p[max_p++].events = POLLIN;
bfc6db44 1636 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1637 p[max_p++].events = POLLIN;
0e59034e
RB
1638 }
1639 }
a8475bbd 1640 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1641 if (n > 0) {
a8475bbd 1642 int j = 1 - (tcp_fd == -1);
9cba6f5f 1643 timeout_cnt = 0;
c8965800 1644 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1645 rtsp_st = rt->rtsp_streams[i];
1646 if (rtsp_st->rtp_handle) {
a8475bbd 1647 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1648 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1649 if (ret > 0) {
1650 *prtsp_st = rtsp_st;
1651 return ret;
1652 }
1653 }
a8475bbd 1654 j+=2;
0e59034e
RB
1655 }
1656 }
5fe8021a 1657#if CONFIG_RTSP_DEMUXER
a8475bbd 1658 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1659 RTSPMessageHeader reply;
1660
3df54c6b 1661 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1662 if (ret < 0)
1663 return ret;
0e59034e 1664 /* XXX: parse message */
c02fd3d2 1665 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1666 return 0;
1667 }
5fe8021a 1668#endif
9cba6f5f 1669 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1670 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1671 } else if (n < 0 && errno != EINTR)
1672 return AVERROR(errno);
0e59034e
RB
1673 }
1674}
1675
0526c6f7 1676int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1677{
1678 RTSPState *rt = s->priv_data;
1679 int ret, len;
321259c1
MS
1680 RTSPStream *rtsp_st, *first_queue_st = NULL;
1681 int64_t wait_end = 0;
0e59034e 1682
b20359f5
JA
1683 if (rt->nb_byes == rt->nb_rtsp_streams)
1684 return AVERROR_EOF;
1685
0e59034e
RB
1686 /* get next frames from the same RTP packet */
1687 if (rt->cur_transport_priv) {
c8965800 1688 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1689 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1690 } else
bfc6db44 1691 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1692 if (ret == 0) {
1693 rt->cur_transport_priv = NULL;
1694 return 0;
1695 } else if (ret == 1) {
1696 return 0;
c8965800 1697 } else
0e59034e 1698 rt->cur_transport_priv = NULL;
0e59034e
RB
1699 }
1700
321259c1
MS
1701 if (rt->transport == RTSP_TRANSPORT_RTP) {
1702 int i;
1703 int64_t first_queue_time = 0;
1704 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1705 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1706 int64_t queue_time;
1707 if (!rtpctx)
1708 continue;
1709 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1710 if (queue_time && (queue_time - first_queue_time < 0 ||
1711 !first_queue_time)) {
1712 first_queue_time = queue_time;
1713 first_queue_st = rt->rtsp_streams[i];
1714 }
1715 }
1716 if (first_queue_time)
1717 wait_end = first_queue_time + s->max_delay;
1718 }
1719
0e59034e
RB
1720 /* read next RTP packet */
1721 redo:
96a7c975
MS
1722 if (!rt->recvbuf) {
1723 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1724 if (!rt->recvbuf)
1725 return AVERROR(ENOMEM);
1726 }
1727
0e59034e
RB
1728 switch(rt->lower_transport) {
1729 default:
5fe8021a 1730#if CONFIG_RTSP_DEMUXER
0e59034e 1731 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1732 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1733 break;
5fe8021a 1734#endif
0e59034e
RB
1735 case RTSP_LOWER_TRANSPORT_UDP:
1736 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1737 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1738 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1739 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1740 break;
1741 }
321259c1
MS
1742 if (len == AVERROR(EAGAIN) && first_queue_st &&
1743 rt->transport == RTSP_TRANSPORT_RTP) {
1744 rtsp_st = first_queue_st;
bfc6db44 1745 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1746 goto end;
1747 }
0e59034e
RB
1748 if (len < 0)
1749 return len;
1750 if (len == 0)
1751 return AVERROR_EOF;
c8965800 1752 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1753 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1754 } else {
bfc6db44 1755 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1756 if (ret < 0) {
1757 /* Either bad packet, or a RTCP packet. Check if the
1758 * first_rtcp_ntp_time field was initialized. */
1759 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1760 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1761 /* first_rtcp_ntp_time has been initialized for this stream,
1762 * copy the same value to all other uninitialized streams,
1763 * in order to map their timestamp origin to the same ntp time
1764 * as this one. */
1765 int i;
3a1cdcc7
MS
1766 AVStream *st = NULL;
1767 if (rtsp_st->stream_index >= 0)
1768 st = s->streams[rtsp_st->stream_index];
2cab6b48 1769 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1770 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1771 AVStream *st2 = NULL;
1772 if (rt->rtsp_streams[i]->stream_index >= 0)
1773 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1774 if (rtpctx2 && st && st2 &&
1775 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1776 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1777 rtpctx2->rtcp_ts_offset = av_rescale_q(
1778 rtpctx->rtcp_ts_offset, st->time_base,
1779 st2->time_base);
1780 }
2cab6b48
MS
1781 }
1782 }
b20359f5
JA
1783 if (ret == -RTCP_BYE) {
1784 rt->nb_byes++;
1785
1786 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1787 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1788
1789 if (rt->nb_byes == rt->nb_rtsp_streams)
1790 return AVERROR_EOF;
1791 }
2cab6b48
MS
1792 }
1793 }
321259c1 1794end:
0e59034e
RB
1795 if (ret < 0)
1796 goto redo;
c8965800 1797 if (ret == 1)
0e59034e
RB
1798 /* more packets may follow, so we save the RTP context */
1799 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1800
1801 return ret;
1802}
44b70ce5 1803#endif /* CONFIG_RTPDEC */
0e59034e 1804
44b70ce5 1805#if CONFIG_SDP_DEMUXER
cb1fdc61 1806static int sdp_probe(AVProbeData *p1)
93ced3e8 1807{
0e1ceacd 1808 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1809
3fbd12d1 1810 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1811 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1812 if (p + sizeof("c=IN IP") - 1 < p_end &&
1813 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1814 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1815
c8965800 1816 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1817 if (++p >= p_end)
cb1fdc61 1818 break;
cb1fdc61
FB
1819 if (*p == '\r')
1820 p++;
1821 }
93ced3e8
FB
1822 return 0;
1823}
1824
c8965800 1825static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1826{
8b1ab7bf 1827 RTSPState *rt = s->priv_data;
93ced3e8
FB
1828 RTSPStream *rtsp_st;
1829 int size, i, err;
1830 char *content;
1831 char url[1024];
1832
57b5555c
MS
1833 if (!ff_network_init())
1834 return AVERROR(EIO);
1835
93ced3e8
FB
1836 /* read the whole sdp file */
1837 /* XXX: better loading */
1838 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1839 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1840 if (size <= 0) {
1841 av_free(content);
1842 return AVERROR_INVALIDDATA;
1843 }
1844 content[size] ='\0';
1845
f81c7ac7 1846 err = ff_sdp_parse(s, content);
93ced3e8 1847 av_free(content);
f81c7ac7 1848 if (err) goto fail;
93ced3e8
FB
1849
1850 /* open each RTP stream */
c8965800 1851 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1852 char namebuf[50];
8b1ab7bf 1853 rtsp_st = rt->rtsp_streams[i];
115329f1 1854
3fbd12d1
MS
1855 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1856 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1857 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1858 namebuf, rtsp_st->sdp_port,
51369f28
MS
1859 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1860 rtsp_st->sdp_ttl,
1861 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
59d96941 1862 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE) < 0) {
93ced3e8
FB
1863 err = AVERROR_INVALIDDATA;
1864 goto fail;
1865 }
ee0cb67f 1866 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1867 goto fail;
93ced3e8
FB
1868 }
1869 return 0;
c8965800 1870fail:
3307e6ea 1871 ff_rtsp_close_streams(s);
57b5555c 1872 ff_network_close();
93ced3e8
FB
1873 return err;
1874}
1875
93ced3e8
FB
1876static int sdp_read_close(AVFormatContext *s)
1877{
3307e6ea 1878 ff_rtsp_close_streams(s);
57b5555c 1879 ff_network_close();
93ced3e8
FB
1880 return 0;
1881}
1882
51369f28
MS
1883static const AVClass sdp_demuxer_class = {
1884 .class_name = "SDP demuxer",
1885 .item_name = av_default_item_name,
1886 .option = sdp_options,
1887 .version = LIBAVUTIL_VERSION_INT,
1888};
1889
c6610a21 1890AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1891 .name = "sdp",
1892 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1893 .priv_data_size = sizeof(RTSPState),
1894 .read_probe = sdp_probe,
1895 .read_header = sdp_read_header,
1896 .read_packet = ff_rtsp_fetch_packet,
1897 .read_close = sdp_read_close,
51369f28 1898 .priv_class = &sdp_demuxer_class
93ced3e8 1899};
44b70ce5 1900#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1901
44b70ce5 1902#if CONFIG_RTP_DEMUXER
44594cc7
MS
1903static int rtp_probe(AVProbeData *p)
1904{
1905 if (av_strstart(p->filename, "rtp:", NULL))
1906 return AVPROBE_SCORE_MAX;
1907 return 0;
1908}
1909
1910static int rtp_read_header(AVFormatContext *s,
1911 AVFormatParameters *ap)
1912{
1913 uint8_t recvbuf[1500];
1914 char host[500], sdp[500];
1915 int ret, port;
1916 URLContext* in = NULL;
1917 int payload_type;
1918 AVCodecContext codec;
1919 struct sockaddr_storage addr;
ae628ec1 1920 AVIOContext pb;
44594cc7
MS
1921 socklen_t addrlen = sizeof(addr);
1922
1923 if (!ff_network_init())
1924 return AVERROR(EIO);
1925
59d96941 1926 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ);
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MS
1927 if (ret)
1928 goto fail;
1929
1930 while (1) {
bc371aca 1931 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
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MS
1932 if (ret == AVERROR(EAGAIN))
1933 continue;
1934 if (ret < 0)
1935 goto fail;
1936 if (ret < 12) {
1937 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1938 continue;
1939 }
1940
1941 if ((recvbuf[0] & 0xc0) != 0x80) {
1942 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1943 "received\n");
1944 continue;
1945 }
1946
1947 payload_type = recvbuf[1] & 0x7f;
1948 break;
1949 }
1869ea03 1950 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 1951 ffurl_close(in);
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1952 in = NULL;
1953
1954 memset(&codec, 0, sizeof(codec));
1955 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1956 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1957 "without an SDP file describing it\n",
1958 payload_type);
1959 goto fail;
1960 }
1961 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1962 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1963 "properly you need an SDP file "
1964 "describing it\n");
1965 }
1966
1967 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1968 NULL, 0, s->filename);
1969
1970 snprintf(sdp, sizeof(sdp),
1971 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1972 addr.ss_family == AF_INET ? 4 : 6, host,
1973 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1974 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1975 port, payload_type);
1976 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1977
e731b8d8 1978 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
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1979 s->pb = &pb;
1980
1981 /* sdp_read_header initializes this again */
1982 ff_network_close();
1983
1984 ret = sdp_read_header(s, ap);
1985 s->pb = NULL;
1986 return ret;
1987
1988fail:
1989 if (in)
e52a9145 1990 ffurl_close(in);
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1991 ff_network_close();
1992 return ret;
1993}
1994
51369f28
MS
1995static const AVClass rtp_demuxer_class = {
1996 .class_name = "RTP demuxer",
1997 .item_name = av_default_item_name,
1998 .option = rtp_options,
1999 .version = LIBAVUTIL_VERSION_INT,
2000};
2001
c6610a21 2002AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
2003 .name = "rtp",
2004 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
2005 .priv_data_size = sizeof(RTSPState),
2006 .read_probe = rtp_probe,
2007 .read_header = rtp_read_header,
2008 .read_packet = ff_rtsp_fetch_packet,
2009 .read_close = sdp_read_close,
44594cc7 2010 .flags = AVFMT_NOFILE,
51369f28 2011 .priv_class = &rtp_demuxer_class
44594cc7 2012};
44b70ce5 2013#endif /* CONFIG_RTP_DEMUXER */
44594cc7 2014