avstring: Add locale independent implementations of strcasecmp/strncasecmp
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
2912e87a 5 * This file is part of Libav.
b78e7197 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
1617ad97
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
1617ad97 11 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
1617ad97
FB
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
2912e87a 18 * License along with Libav; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1617ad97 20 */
245976da 21
f9337897 22#include "libavutil/base64.h"
245976da 23#include "libavutil/avstring.h"
6a5d31ac 24#include "libavutil/intreadwrite.h"
0ebcdf5c 25#include "libavutil/mathematics.h"
9fcae973 26#include "libavutil/parseutils.h"
f5d33f52 27#include "libavutil/random_seed.h"
d2d67e42 28#include "libavutil/dict.h"
d450cc4f 29#include "libavutil/opt.h"
1617ad97 30#include "avformat.h"
e731b8d8 31#include "avio_internal.h"
1617ad97 32
db0ed93e 33#include <sys/time.h>
a8475bbd
LB
34#if HAVE_POLL_H
35#include <poll.h>
6ad1c9c9 36#endif
ea452b54 37#include <strings.h>
e4a9e3cc 38#include "internal.h"
42572ef5 39#include "network.h"
cbfa66d0 40#include "os_support.h"
f5d33f52 41#include "http.h"
c971ff19 42#include "rtsp.h"
1617ad97 43
302879cb 44#include "rtpdec.h"
e9dea59f 45#include "rdt.h"
965a3ddb 46#include "rtpdec_formats.h"
a493f80a 47#include "rtpenc_chain.h"
5652bb94 48#include "url.h"
17fff881 49#include "rtpenc.h"
4934884a 50
1617ad97
FB
51//#define DEBUG
52
a8475bbd 53/* Timeout values for socket poll, in ms,
9cba6f5f 54 * and read_packet(), in seconds */
a8475bbd 55#define POLL_TIMEOUT_MS 100
9cba6f5f 56#define READ_PACKET_TIMEOUT_S 10
a8475bbd 57#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 58#define SDP_MAX_SIZE 16384
96a7c975 59#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
9cba6f5f 60
2c9aa024
MS
61#define OFFSET(x) offsetof(RTSPState, x)
62#define DEC AV_OPT_FLAG_DECODING_PARAM
eca4850c 63#define ENC AV_OPT_FLAG_ENCODING_PARAM
3a6765fb
MS
64
65#define RTSP_FLAG_OPTS(name, longname) \
66 { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
67 { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" }
68
f011fcd6
JB
69#define RTSP_MEDIATYPE_OPTS(name, longname) \
70 { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
71 { "video", "Video", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
72 { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
73 { "data", "Data", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }
74
17fff881 75const AVOption ff_rtsp_options[] = {
2c9aa024 76 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {0}, 0, 1, DEC },
17fff881 77 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
eca4850c
MS
78 { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
79 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
80 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
81 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
82 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {(1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
3a6765fb 83 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
f011fcd6 84 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
17fff881
MS
85 { NULL },
86};
87
51369f28
MS
88static const AVOption sdp_options[] = {
89 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
f011fcd6 90 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
51369f28
MS
91 { NULL },
92};
93
94static const AVOption rtp_options[] = {
95 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
96 { NULL },
97};
98
1ef36a70
RB
99static void get_word_until_chars(char *buf, int buf_size,
100 const char *sep, const char **pp)
1617ad97
FB
101{
102 const char *p;
103 char *q;
104
105 p = *pp;
30619e6e 106 p += strspn(p, SPACE_CHARS);
1617ad97
FB
107 q = buf;
108 while (!strchr(sep, *p) && *p != '\0') {
109 if ((q - buf) < buf_size - 1)
110 *q++ = *p;
111 p++;
112 }
113 if (buf_size > 0)
114 *q = '\0';
115 *pp = p;
116}
117
1ef36a70
RB
118static void get_word_sep(char *buf, int buf_size, const char *sep,
119 const char **pp)
1617ad97 120{
1ef36a70
RB
121 if (**pp == '/') (*pp)++;
122 get_word_until_chars(buf, buf_size, sep, pp);
123}
1617ad97 124
1ef36a70
RB
125static void get_word(char *buf, int buf_size, const char **pp)
126{
127 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
128}
129
8bf0f969
MS
130/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
131 * and end time.
132 * Used for seeking in the rtp stream.
133 */
134static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
135{
136 char buf[256];
137
138 p += strspn(p, SPACE_CHARS);
139 if (!av_stristart(p, "npt=", &p))
140 return;
141
142 *start = AV_NOPTS_VALUE;
143 *end = AV_NOPTS_VALUE;
144
145 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 146 av_parse_time(start, buf, 1);
8bf0f969
MS
147 if (*p == '-') {
148 p++;
149 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 150 av_parse_time(end, buf, 1);
8bf0f969
MS
151 }
152// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
153// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
154}
155
156static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
157{
158 struct addrinfo hints, *ai = NULL;
159 memset(&hints, 0, sizeof(hints));
160 hints.ai_flags = AI_NUMERICHOST;
161 if (getaddrinfo(buf, NULL, &hints, &ai))
162 return -1;
163 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
164 freeaddrinfo(ai);
165 return 0;
166}
167
44b70ce5 168#if CONFIG_RTPDEC
003eb642
MS
169static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
170 RTSPStream *rtsp_st, AVCodecContext *codec)
171{
172 if (!handler)
173 return;
174 codec->codec_id = handler->codec_id;
175 rtsp_st->dynamic_handler = handler;
9261e6cf
MS
176 if (handler->alloc)
177 rtsp_st->dynamic_protocol_context = handler->alloc();
003eb642
MS
178}
179
c8965800 180/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 181static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 182 AVStream *st, RTSPStream *rtsp_st,
c8965800 183 int payload_type, const char *p)
93ced3e8 184{
86b6e387 185 AVCodecContext *codec = st->codec;
93ced3e8 186 char buf[256];
d1ccf0e0
RD
187 int i;
188 AVCodec *c;
7b49ce2e 189 const char *c_name;
93ced3e8 190
d1ccf0e0 191 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
192 * see if we can handle this kind of payload.
193 * The space should normally not be there but some Real streams or
194 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
195 * have a trailing space. */
196 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 197 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
198 RTPDynamicProtocolHandler *handler =
199 ff_rtp_handler_find_by_name(buf, codec->codec_type);
200 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
201 /* If no dynamic handler was found, check with the list of standard
202 * allocated types, if such a stream for some reason happens to
203 * use a private payload type. This isn't handled in rtpdec.c, since
204 * the format name from the rtpmap line never is passed into rtpdec. */
205 if (!rtsp_st->dynamic_handler)
206 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 207 } else {
c8965800
RB
208 /* We are in a standard case
209 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 210 /* search into AVRtpPayloadTypes[] */
7ed19d7f 211 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
212 }
213
214 c = avcodec_find_decoder(codec->codec_id);
215 if (c && c->name)
7b49ce2e 216 c_name = c->name;
d1ccf0e0 217 else
170870b7 218 c_name = "(null)";
d1ccf0e0 219
7515ed0c
RB
220 get_word_sep(buf, sizeof(buf), "/", &p);
221 i = atoi(buf);
222 switch (codec->codec_type) {
72415b2a 223 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
224 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
225 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
226 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
227 if (i > 0) {
228 codec->sample_rate = i;
86b6e387 229 av_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
230 get_word_sep(buf, sizeof(buf), "/", &p);
231 i = atoi(buf);
232 if (i > 0)
233 codec->channels = i;
234 // TODO: there is a bug here; if it is a mono stream, and
235 // less than 22000Hz, faad upconverts to stereo and twice
236 // the frequency. No problem, but the sample rate is being
237 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 238 }
7515ed0c
RB
239 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
240 codec->sample_rate);
241 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
242 codec->channels);
243 break;
72415b2a 244 case AVMEDIA_TYPE_VIDEO:
7515ed0c 245 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387
MS
246 if (i > 0)
247 av_set_pts_info(st, 32, 1, i);
7515ed0c
RB
248 break;
249 default:
250 break;
251 }
252 return 0;
93ced3e8
FB
253}
254
c2bfd816 255/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
256 * is broken out as a function because it is used in rtp_h264.c, which is
257 * forthcoming. */
3307e6ea 258int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 259 char *value, int value_size)
d0deedcb 260{
30619e6e 261 *p += strspn(*p, SPACE_CHARS);
c8965800 262 if (**p) {
d0deedcb
RM
263 get_word_sep(attr, attr_size, "=", p);
264 if (**p == '=')
265 (*p)++;
266 get_word_sep(value, value_size, ";", p);
267 if (**p == ';')
268 (*p)++;
269 return 1;
270 }
271 return 0;
272}
273
93ced3e8
FB
274typedef struct SDPParseState {
275 /* SDP only */
3fbd12d1 276 struct sockaddr_storage default_ip;
c8965800
RB
277 int default_ttl;
278 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
279} SDPParseState;
280
281static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
282 int letter, const char *buf)
283{
8b1ab7bf 284 RTSPState *rt = s->priv_data;
1617ad97
FB
285 char buf1[64], st_type[64];
286 const char *p;
72415b2a 287 enum AVMediaType codec_type;
fb65d2ca 288 int payload_type, i;
1617ad97
FB
289 AVStream *st;
290 RTSPStream *rtsp_st;
3fbd12d1 291 struct sockaddr_storage sdp_ip;
93ced3e8
FB
292 int ttl;
293
dfd2a005 294 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
295
296 p = buf;
cb760a47
RB
297 if (s1->skip_media && letter != 'm')
298 return;
c8965800 299 switch (letter) {
93ced3e8
FB
300 case 'c':
301 get_word(buf1, sizeof(buf1), &p);
302 if (strcmp(buf1, "IN") != 0)
303 return;
304 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 305 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
306 return;
307 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 308 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
309 return;
310 ttl = 16;
311 if (*p == '/') {
312 p++;
313 get_word_sep(buf1, sizeof(buf1), "/", &p);
314 ttl = atoi(buf1);
315 }
316 if (s->nb_streams == 0) {
317 s1->default_ip = sdp_ip;
318 s1->default_ttl = ttl;
319 } else {
d9c0510e 320 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
321 rtsp_st->sdp_ip = sdp_ip;
322 rtsp_st->sdp_ttl = ttl;
323 }
324 break;
1617ad97 325 case 's':
d2d67e42 326 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
327 break;
328 case 'i':
329 if (s->nb_streams == 0) {
d2d67e42 330 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
331 break;
332 }
333 break;
334 case 'm':
335 /* new stream */
cb760a47 336 s1->skip_media = 0;
f011fcd6 337 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
338 get_word(st_type, sizeof(st_type), &p);
339 if (!strcmp(st_type, "audio")) {
72415b2a 340 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 341 } else if (!strcmp(st_type, "video")) {
72415b2a 342 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 343 } else if (!strcmp(st_type, "application")) {
72415b2a 344 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
345 }
346 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 347 s1->skip_media = 1;
1617ad97
FB
348 return;
349 }
1617ad97
FB
350 rtsp_st = av_mallocz(sizeof(RTSPStream));
351 if (!rtsp_st)
352 return;
8b1ab7bf
FB
353 rtsp_st->stream_index = -1;
354 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
355
356 rtsp_st->sdp_ip = s1->default_ip;
357 rtsp_st->sdp_ttl = s1->default_ttl;
358
93ced3e8
FB
359 get_word(buf1, sizeof(buf1), &p); /* port */
360 rtsp_st->sdp_port = atoi(buf1);
361
362 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 363
93ced3e8
FB
364 /* XXX: handle list of formats */
365 get_word(buf1, sizeof(buf1), &p); /* format list */
366 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 367
7ed19d7f 368 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
369 /* no corresponding stream */
370 } else {
84ad31ff 371 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
372 if (!st)
373 return;
84ad31ff 374 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 375 rtsp_st->stream_index = st->index;
01f4895c 376 st->codec->codec_type = codec_type;
d1ccf0e0 377 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 378 RTPDynamicProtocolHandler *handler;
8b1ab7bf 379 /* if standard payload type, we can find the codec right now */
bf6d9818 380 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
381 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
382 st->codec->sample_rate > 0)
86b6e387 383 av_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
384 /* Even static payload types may need a custom depacketizer */
385 handler = ff_rtp_handler_find_by_id(
386 rtsp_st->sdp_payload_type, st->codec->codec_type);
387 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
388 }
389 }
1617ad97 390 /* put a default control url */
00eb13e0 391 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 392 sizeof(rtsp_st->control_url));
1617ad97
FB
393 break;
394 case 'a':
00eb13e0
AS
395 if (av_strstart(p, "control:", &p)) {
396 if (s->nb_streams == 0) {
397 if (!strncmp(p, "rtsp://", 7))
398 av_strlcpy(rt->control_uri, p,
399 sizeof(rt->control_uri));
400 } else {
0b6a7ff4
MS
401 char proto[32];
402 /* get the control url */
d9c0510e 403 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 404
0b6a7ff4
MS
405 /* XXX: may need to add full url resolution */
406 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
407 NULL, NULL, 0, p);
408 if (proto[0] == '\0') {
409 /* relative control URL */
410 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
411 av_strlcat(rtsp_st->control_url, "/",
412 sizeof(rtsp_st->control_url));
413 av_strlcat(rtsp_st->control_url, p,
414 sizeof(rtsp_st->control_url));
415 } else
416 av_strlcpy(rtsp_st->control_url, p,
417 sizeof(rtsp_st->control_url));
00eb13e0 418 }
83d14c85 419 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 420 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 421 get_word(buf1, sizeof(buf1), &p);
93ced3e8 422 payload_type = atoi(buf1);
83d14c85 423 st = s->streams[s->nb_streams - 1];
d9c0510e 424 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
86b6e387 425 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
426 } else if (av_strstart(p, "fmtp:", &p) ||
427 av_strstart(p, "framesize:", &p)) {
93ced3e8 428 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
429 // let dynamic protocol handlers have a stab at the line.
430 get_word(buf1, sizeof(buf1), &p);
431 payload_type = atoi(buf1);
d9c0510e
MS
432 for (i = 0; i < rt->nb_rtsp_streams; i++) {
433 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
434 if (rtsp_st->sdp_payload_type == payload_type &&
435 rtsp_st->dynamic_handler &&
436 rtsp_st->dynamic_handler->parse_sdp_a_line)
437 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
438 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 439 }
c8965800 440 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
441 int64_t start, end;
442
443 // this is so that seeking on a streamed file can work.
444 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
445 s->start_time = start;
446 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
447 s->duration = (end == AV_NOPTS_VALUE) ?
448 AV_NOPTS_VALUE : end - start;
119b4668
RB
449 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
450 if (atoi(p) == 1)
451 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
452 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
453 s->nb_streams > 0) {
454 st = s->streams[s->nb_streams - 1];
455 st->codec->sample_rate = atoi(p);
1a30d541
RB
456 } else {
457 if (rt->server_type == RTSP_SERVER_WMS)
458 ff_wms_parse_sdp_a_line(s, p);
459 if (s->nb_streams > 0) {
c4a3d032
RB
460 if (rt->server_type == RTSP_SERVER_REAL)
461 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
462
d9c0510e 463 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
c4a3d032
RB
464 if (rtsp_st->dynamic_handler &&
465 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
466 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
467 s->nb_streams - 1,
c4a3d032 468 rtsp_st->dynamic_protocol_context, buf);
1a30d541 469 }
1617ad97
FB
470 }
471 break;
472 }
473}
474
0526c6f7 475int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 476{
a8475bbd 477 RTSPState *rt = s->priv_data;
1617ad97
FB
478 const char *p;
479 int letter;
9211bcdd
RB
480 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
481 * contain long SDP lines containing complete ASF Headers (several
482 * kB) or arrays of MDPR (RM stream descriptor) headers plus
483 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
484 * buffer is large.
485 *
afcea58c
JA
486 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
487 * in rtpdec_xiph.c. */
373afbaf 488 char buf[16384], *q;
93ced3e8 489 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 490
93ced3e8 491 memset(s1, 0, sizeof(SDPParseState));
1617ad97 492 p = content;
c8965800 493 for (;;) {
30619e6e 494 p += strspn(p, SPACE_CHARS);
1617ad97
FB
495 letter = *p;
496 if (letter == '\0')
497 break;
498 p++;
499 if (*p != '=')
500 goto next_line;
501 p++;
502 /* get the content */
503 q = buf;
b6892136 504 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
505 if ((q - buf) < sizeof(buf) - 1)
506 *q++ = *p;
507 p++;
508 }
509 *q = '\0';
93ced3e8 510 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
511 next_line:
512 while (*p != '\n' && *p != '\0')
513 p++;
514 if (*p == '\n')
515 p++;
516 }
a8475bbd
LB
517 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
518 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
519 return 0;
520}
44b70ce5 521#endif /* CONFIG_RTPDEC */
1617ad97 522
93e7490e
MS
523void ff_rtsp_undo_setup(AVFormatContext *s)
524{
525 RTSPState *rt = s->priv_data;
526 int i;
527
528 for (i = 0; i < rt->nb_rtsp_streams; i++) {
529 RTSPStream *rtsp_st = rt->rtsp_streams[i];
530 if (!rtsp_st)
531 continue;
532 if (rtsp_st->transport_priv) {
533 if (s->oformat) {
534 AVFormatContext *rtpctx = rtsp_st->transport_priv;
535 av_write_trailer(rtpctx);
536 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
537 uint8_t *ptr;
6dc7d80d 538 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
539 av_free(ptr);
540 } else {
22a3212e 541 avio_close(rtpctx->pb);
93e7490e 542 }
b22dbb29 543 avformat_free_context(rtpctx);
93e7490e
MS
544 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
545 ff_rdt_parse_close(rtsp_st->transport_priv);
546 else if (CONFIG_RTPDEC)
bfc6db44 547 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
548 }
549 rtsp_st->transport_priv = NULL;
550 if (rtsp_st->rtp_handle)
e52a9145 551 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
552 rtsp_st->rtp_handle = NULL;
553 }
554}
555
1ced9da3 556/* close and free RTSP streams */
3307e6ea 557void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 558{
52aa4338 559 RTSPState *rt = s->priv_data;
1ced9da3
LA
560 int i;
561 RTSPStream *rtsp_st;
562
93e7490e 563 ff_rtsp_undo_setup(s);
c8965800 564 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
565 rtsp_st = rt->rtsp_streams[i];
566 if (rtsp_st) {
1ced9da3 567 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 568 rtsp_st->dynamic_handler->free(
c8965800 569 rtsp_st->dynamic_protocol_context);
ea7f0807 570 av_free(rtsp_st);
1ced9da3
LA
571 }
572 }
573 av_free(rt->rtsp_streams);
574 if (rt->asf_ctx) {
575 av_close_input_stream (rt->asf_ctx);
576 rt->asf_ctx = NULL;
577 }
a8475bbd 578 av_free(rt->p);
96a7c975 579 av_free(rt->recvbuf);
1ced9da3
LA
580}
581
c8965800 582static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
583{
584 RTSPState *rt = s->priv_data;
585 AVStream *st = NULL;
586
587 /* open the RTP context */
588 if (rtsp_st->stream_index >= 0)
589 st = s->streams[rtsp_st->stream_index];
590 if (!st)
591 s->ctx_flags |= AVFMTCTX_NOHEADER;
592
44b70ce5 593 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
594 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
595 rtsp_st->rtp_handle,
596 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 597 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 598 rtsp_st->rtp_handle = NULL;
44b70ce5 599 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
600 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
601 rtsp_st->dynamic_protocol_context,
602 rtsp_st->dynamic_handler);
44b70ce5 603 else if (CONFIG_RTPDEC)
bfc6db44 604 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
605 rtsp_st->sdp_payload_type,
606 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
607 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
608
609 if (!rtsp_st->transport_priv) {
610 return AVERROR(ENOMEM);
44b70ce5 611 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 612 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
613 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
614 rtsp_st->dynamic_protocol_context,
615 rtsp_st->dynamic_handler);
1ced9da3
LA
616 }
617 }
618
619 return 0;
620}
621
6f5a3d0a 622#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
623static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
624{
625 const char *p;
626 int v;
627
628 p = *pp;
30619e6e 629 p += strspn(p, SPACE_CHARS);
1617ad97
FB
630 v = strtol(p, (char **)&p, 10);
631 if (*p == '-') {
632 p++;
633 *min_ptr = v;
634 v = strtol(p, (char **)&p, 10);
635 *max_ptr = v;
636 } else {
637 *min_ptr = v;
638 *max_ptr = v;
639 }
640 *pp = p;
641}
642
643/* XXX: only one transport specification is parsed */
a9e534d5 644static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
645{
646 char transport_protocol[16];
647 char profile[16];
648 char lower_transport[16];
649 char parameter[16];
650 RTSPTransportField *th;
651 char buf[256];
115329f1 652
1617ad97 653 reply->nb_transports = 0;
115329f1 654
c8965800 655 for (;;) {
30619e6e 656 p += strspn(p, SPACE_CHARS);
1617ad97
FB
657 if (*p == '\0')
658 break;
659
660 th = &reply->transports[reply->nb_transports];
661
115329f1 662 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 663 "/", &p);
e1502118 664 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
665 get_word_sep(profile, sizeof(profile), "/;,", &p);
666 lower_transport[0] = '\0';
667 /* rtp/avp/<protocol> */
668 if (*p == '/') {
7ecc634e
LB
669 get_word_sep(lower_transport, sizeof(lower_transport),
670 ";,", &p);
119b4668
RB
671 }
672 th->transport = RTSP_TRANSPORT_RTP;
673 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
674 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 675 /* x-pn-tng/<protocol> */
e1502118
LB
676 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
677 profile[0] = '\0';
119b4668 678 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 679 }
b6892136 680 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 681 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 682 else
90abbdba 683 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 684
1617ad97
FB
685 if (*p == ';')
686 p++;
687 /* get each parameter */
688 while (*p != '\0' && *p != ',') {
689 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
690 if (!strcmp(parameter, "port")) {
691 if (*p == '=') {
692 p++;
693 rtsp_parse_range(&th->port_min, &th->port_max, &p);
694 }
695 } else if (!strcmp(parameter, "client_port")) {
696 if (*p == '=') {
697 p++;
115329f1 698 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
699 &th->client_port_max, &p);
700 }
701 } else if (!strcmp(parameter, "server_port")) {
702 if (*p == '=') {
703 p++;
115329f1 704 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
705 &th->server_port_max, &p);
706 }
707 } else if (!strcmp(parameter, "interleaved")) {
708 if (*p == '=') {
709 p++;
115329f1 710 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
711 &th->interleaved_max, &p);
712 }
713 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
714 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
715 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
716 } else if (!strcmp(parameter, "ttl")) {
717 if (*p == '=') {
718 p++;
719 th->ttl = strtol(p, (char **)&p, 10);
720 }
721 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
722 if (*p == '=') {
723 p++;
724 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 725 get_sockaddr(buf, &th->destination);
1617ad97 726 }
619298a8
JW
727 } else if (!strcmp(parameter, "source")) {
728 if (*p == '=') {
729 p++;
730 get_word_sep(buf, sizeof(buf), ";,", &p);
731 av_strlcpy(th->source, buf, sizeof(th->source));
732 }
1617ad97 733 }
619298a8 734
1617ad97
FB
735 while (*p != ';' && *p != '\0' && *p != ',')
736 p++;
737 if (*p == ';')
738 p++;
739 }
740 if (*p == ',')
741 p++;
742
743 reply->nb_transports++;
744 }
745}
746
29db7c3a
MS
747static void handle_rtp_info(RTSPState *rt, const char *url,
748 uint32_t seq, uint32_t rtptime)
749{
750 int i;
751 if (!rtptime || !url[0])
752 return;
753 if (rt->transport != RTSP_TRANSPORT_RTP)
754 return;
755 for (i = 0; i < rt->nb_rtsp_streams; i++) {
756 RTSPStream *rtsp_st = rt->rtsp_streams[i];
757 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
758 if (!rtpctx)
759 continue;
760 if (!strcmp(rtsp_st->control_url, url)) {
761 rtpctx->base_timestamp = rtptime;
762 break;
763 }
764 }
765}
766
767static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
768{
769 int read = 0;
770 char key[20], value[1024], url[1024] = "";
771 uint32_t seq = 0, rtptime = 0;
772
773 for (;;) {
774 p += strspn(p, SPACE_CHARS);
775 if (!*p)
776 break;
777 get_word_sep(key, sizeof(key), "=", &p);
778 if (*p != '=')
779 break;
780 p++;
781 get_word_sep(value, sizeof(value), ";, ", &p);
782 read++;
783 if (!strcmp(key, "url"))
784 av_strlcpy(url, value, sizeof(url));
785 else if (!strcmp(key, "seq"))
4515f9b5 786 seq = strtoul(value, NULL, 10);
29db7c3a 787 else if (!strcmp(key, "rtptime"))
4515f9b5 788 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
789 if (*p == ',') {
790 handle_rtp_info(rt, url, seq, rtptime);
791 url[0] = '\0';
792 seq = rtptime = 0;
793 read = 0;
794 }
795 if (*p)
796 p++;
797 }
798 if (read > 0)
799 handle_rtp_info(rt, url, seq, rtptime);
800}
801
2626308a 802void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 803 RTSPState *rt, const char *method)
1617ad97
FB
804{
805 const char *p;
806
807 /* NOTE: we do case independent match for broken servers */
808 p = buf;
f7d78f36 809 if (av_stristart(p, "Session:", &p)) {
30e79845 810 int t;
1617ad97 811 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
812 if (av_stristart(p, ";timeout=", &p) &&
813 (t = strtol(p, NULL, 10)) > 0) {
814 reply->timeout = t;
815 }
f7d78f36 816 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 817 reply->content_length = strtol(p, NULL, 10);
f7d78f36 818 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 819 rtsp_parse_transport(reply, p);
f7d78f36 820 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 821 reply->seq = strtol(p, NULL, 10);
f7d78f36 822 } else if (av_stristart(p, "Range:", &p)) {
31693e00 823 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 824 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 825 p += strspn(p, SPACE_CHARS);
30aa6aed 826 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 827 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 828 p += strspn(p, SPACE_CHARS);
7a86bafa 829 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
830 } else if (av_stristart(p, "Notice:", &p) ||
831 av_stristart(p, "X-Notice:", &p)) {
832 reply->notice = strtol(p, NULL, 10);
d243ba30 833 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 834 p += strspn(p, SPACE_CHARS);
d243ba30 835 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 836 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 837 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
838 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
839 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 840 p += strspn(p, SPACE_CHARS);
acc9ed14 841 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 842 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 843 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
844 if (method && !strcmp(method, "DESCRIBE"))
845 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
846 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
847 p += strspn(p, SPACE_CHARS);
848 if (method && !strcmp(method, "PLAY"))
849 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
850 } else if (av_stristart(p, "Public:", &p) && rt) {
851 if (strstr(p, "GET_PARAMETER") &&
852 method && !strcmp(method, "OPTIONS"))
853 rt->get_parameter_supported = 1;
30eae325
MS
854 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
855 p += strspn(p, SPACE_CHARS);
856 rt->accept_dynamic_rate = atoi(p);
1617ad97
FB
857 }
858}
859
b7b8fc34 860/* skip a RTP/TCP interleaved packet */
ec55edba 861void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
862{
863 RTSPState *rt = s->priv_data;
864 int ret, len, len1;
865 uint8_t buf[1024];
866
dce37564 867 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
868 if (ret != 3)
869 return;
80fb8234 870 len = AV_RB16(buf + 1);
67c9cd69 871
dfd2a005 872 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 873
b7b8fc34
FB
874 /* skip payload */
875 while (len > 0) {
876 len1 = len;
877 if (len1 > sizeof(buf))
878 len1 = sizeof(buf);
dce37564 879 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
880 if (ret != len1)
881 return;
882 len -= len1;
883 }
884}
1617ad97 885
3307e6ea 886int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 887 unsigned char **content_ptr,
3df54c6b 888 int return_on_interleaved_data, const char *method)
1617ad97
FB
889{
890 RTSPState *rt = s->priv_data;
891 char buf[4096], buf1[1024], *q;
892 unsigned char ch;
893 const char *p;
7e726132 894 int ret, content_length, line_count = 0;
1617ad97
FB
895 unsigned char *content = NULL;
896
d541a7d2 897 memset(reply, 0, sizeof(*reply));
1617ad97 898
1617ad97 899 /* parse reply (XXX: use buffers) */
1617ad97 900 rt->last_reply[0] = '\0';
c8965800 901 for (;;) {
1617ad97 902 q = buf;
c8965800 903 for (;;) {
dce37564 904 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 905 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 906 if (ret != 1)
2401660d 907 return AVERROR_EOF;
1617ad97
FB
908 if (ch == '\n')
909 break;
b7b8fc34
FB
910 if (ch == '$') {
911 /* XXX: only parse it if first char on line ? */
7e726132
RB
912 if (return_on_interleaved_data) {
913 return 1;
914 } else
ec55edba 915 ff_rtsp_skip_packet(s);
b7b8fc34 916 } else if (ch != '\r') {
1617ad97
FB
917 if ((q - buf) < sizeof(buf) - 1)
918 *q++ = ch;
919 }
920 }
921 *q = '\0';
67c9cd69 922
dfd2a005 923 av_dlog(s, "line='%s'\n", buf);
67c9cd69 924
1617ad97
FB
925 /* test if last line */
926 if (buf[0] == '\0')
927 break;
928 p = buf;
929 if (line_count == 0) {
930 /* get reply code */
931 get_word(buf1, sizeof(buf1), &p);
932 get_word(buf1, sizeof(buf1), &p);
933 reply->status_code = atoi(buf1);
d93fdcbf 934 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 935 } else {
77223c53 936 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
937 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
938 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
939 }
940 line_count++;
941 }
115329f1 942
1617ad97 943 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 944 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 945
1617ad97
FB
946 content_length = reply->content_length;
947 if (content_length > 0) {
948 /* leave some room for a trailing '\0' (useful for simple parsing) */
949 content = av_malloc(content_length + 1);
dce37564 950 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
951 content[content_length] = '\0';
952 }
953 if (content_ptr)
954 *content_ptr = content;
e2e2e7dd
AB
955 else
956 av_free(content);
7e726132 957
7ed8211b
LB
958 if (rt->seq != reply->seq) {
959 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
960 rt->seq, reply->seq);
961 }
962
fccb1770
RB
963 /* EOS */
964 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
965 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 966 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 967 rt->state = RTSP_STATE_IDLE;
c8965800 968 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 969 return AVERROR(EIO); /* data or server error */
c8965800 970 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
971 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
972 return AVERROR(EPERM);
973
7e726132 974 return 0;
1617ad97
FB
975}
976
57c4d01e
DEP
977/**
978 * Send a command to the RTSP server without waiting for the reply.
979 *
980 * @param s RTSP (de)muxer context
981 * @param method the method for the request
982 * @param url the target url for the request
983 * @param headers extra header lines to include in the request
984 * @param send_content if non-null, the data to send as request body content
985 * @param send_content_length the length of the send_content data, or 0 if
986 * send_content is null
987 *
988 * @return zero if success, nonzero otherwise
989 */
990static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
991 const char *method, const char *url,
992 const char *headers,
993 const unsigned char *send_content,
994 int send_content_length)
29b9f58b
RB
995{
996 RTSPState *rt = s->priv_data;
f5d33f52
JA
997 char buf[4096], *out_buf;
998 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 999
f5d33f52
JA
1000 /* Add in RTSP headers */
1001 out_buf = buf;
29b9f58b 1002 rt->seq++;
b17d11c6
MS
1003 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1004 if (headers)
1005 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1006 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1007 if (rt->session_id[0] != '\0' && (!headers ||
1008 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1009 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1010 }
aa8bf2fb
MS
1011 if (rt->auth[0]) {
1012 char *str = ff_http_auth_create_response(&rt->auth_state,
1013 rt->auth, url, method);
1014 if (str)
1015 av_strlcat(buf, str, sizeof(buf));
1016 av_free(str);
1017 }
dfd017bf
MS
1018 if (send_content_length > 0 && send_content)
1019 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1020 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1021
f5d33f52
JA
1022 /* base64 encode rtsp if tunneling */
1023 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1024 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1025 out_buf = base64buf;
1026 }
1027
dfd2a005 1028 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1029
925e908b 1030 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1031 if (send_content_length > 0 && send_content) {
1032 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1033 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1034 "with content data not supported\n");
1035 return AVERROR_PATCHWELCOME;
1036 }
925e908b 1037 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1038 }
30e79845 1039 rt->last_cmd_time = av_gettime();
d0382374
JA
1040
1041 return 0;
30e79845
RB
1042}
1043
d0382374 1044int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1045 const char *url, const char *headers)
dfd017bf 1046{
d0382374 1047 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1048}
1049
d0382374 1050int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1051 const char *headers, RTSPMessageHeader *reply,
1052 unsigned char **content_ptr)
30e79845 1053{
d0382374 1054 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1055 content_ptr, NULL, 0);
29b9f58b
RB
1056}
1057
d0382374 1058int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1059 const char *method, const char *url,
1060 const char *header,
1061 RTSPMessageHeader *reply,
1062 unsigned char **content_ptr,
1063 const unsigned char *send_content,
1064 int send_content_length)
dfd017bf 1065{
30af0779
MS
1066 RTSPState *rt = s->priv_data;
1067 HTTPAuthType cur_auth_type;
d0382374 1068 int ret;
30af0779
MS
1069
1070retry:
1071 cur_auth_type = rt->auth_state.auth_type;
d0382374 1072 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1073 send_content,
1074 send_content_length)))
d0382374 1075 return ret;
dfd017bf 1076
3df54c6b 1077 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1078 return ret;
30af0779
MS
1079
1080 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1081 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1082 goto retry;
d0382374 1083
bf55cf19 1084 if (reply->status_code > 400){
d93fdcbf 1085 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1086 method,
d93fdcbf
LB
1087 reply->status_code,
1088 reply->reason);
bf55cf19
LB
1089 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1090 }
1091
d0382374 1092 return 0;
dfd017bf
MS
1093}
1094
fef5649a 1095int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1096 int lower_transport, const char *real_challenge)
1617ad97
FB
1097{
1098 RTSPState *rt = s->priv_data;
f830c9a4 1099 int rtx, j, i, err, interleave = 0;
1617ad97 1100 RTSPStream *rtsp_st;
a9e534d5 1101 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1102 char cmd[2048];
e9dea59f
RB
1103 const char *trans_pref;
1104
119b4668 1105 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1106 trans_pref = "x-pn-tng";
1107 else
1108 trans_pref = "RTP/AVP";
115329f1 1109
30e79845
RB
1110 /* default timeout: 1 minute */
1111 rt->timeout = 60;
1112
1617ad97
FB
1113 /* for each stream, make the setup request */
1114 /* XXX: we assume the same server is used for the control of each
c8965800 1115 * RTSP stream */
d1ccf0e0 1116
c8965800 1117 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1118 char transport[2048];
1119
f75e3da5 1120 /*
f830c9a4
RB
1121 * WMS serves all UDP data over a single connection, the RTX, which
1122 * isn't necessarily the first in the SDP but has to be the first
1123 * to be set up, else the second/third SETUP will fail with a 461.
1124 */
1125 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1126 rt->server_type == RTSP_SERVER_WMS) {
1127 if (i == 0) {
1128 /* rtx first */
1129 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1130 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1131 if (len >= 4 &&
c8965800
RB
1132 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1133 "/rtx"))
f830c9a4
RB
1134 break;
1135 }
1136 if (rtx == rt->nb_rtsp_streams)
1137 return -1; /* no RTX found */
1138 rtsp_st = rt->rtsp_streams[rtx];
1139 } else
1140 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1141 } else
2fea9650 1142 rtsp_st = rt->rtsp_streams[i];
1617ad97 1143
1617ad97 1144 /* RTP/UDP */
90abbdba 1145 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1146 char buf[256];
85fb7b34 1147
f830c9a4
RB
1148 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1149 port = reply->transports[0].client_port_min;
1150 goto have_port;
1151 }
1152
85fb7b34 1153 /* first try in specified port range */
d1ccf0e0 1154 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1155 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1156 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1157 "?localport=%d", j);
c8965800
RB
1158 /* we will use two ports per rtp stream (rtp and rtcp) */
1159 j += 2;
59d96941 1160 if (ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE) == 0)
85fb7b34
FB
1161 goto rtp_opened;
1162 }
1617ad97 1163 }
85fb7b34 1164
a3b058b7
MS
1165 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1166 err = AVERROR(EIO);
1167 goto fail;
85fb7b34
FB
1168
1169 rtp_opened:
bfc6db44 1170 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1171 have_port:
0ad306bc 1172 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1173 "%s/UDP;", trans_pref);
1174 if (rt->server_type != RTSP_SERVER_REAL)
1175 av_strlcat(transport, "unicast;", sizeof(transport));
1176 av_strlcatf(transport, sizeof(transport),
1177 "client_port=%d", port);
f830c9a4
RB
1178 if (rt->transport == RTSP_TRANSPORT_RTP &&
1179 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1180 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1181 }
1182
1183 /* RTP/TCP */
90abbdba 1184 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1185 /* For WMS streams, the application streams are only used for
090438cc
RB
1186 * UDP. When trying to set it up for TCP streams, the server
1187 * will return an error. Therefore, we skip those streams. */
1188 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1189 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1190 AVMEDIA_TYPE_DATA)
090438cc 1191 continue;
0ad306bc 1192 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1193 "%s/TCP;", trans_pref);
895678f8 1194 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1195 av_strlcat(transport, "unicast;", sizeof(transport));
1196 av_strlcatf(transport, sizeof(transport),
1197 "interleaved=%d-%d",
1198 interleave, interleave + 1);
1199 interleave += 2;
1617ad97
FB
1200 }
1201
90abbdba 1202 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1203 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1204 "%s/UDP;multicast", trans_pref);
1617ad97 1205 }
69adcc4f
MS
1206 if (s->oformat) {
1207 av_strlcat(transport, ";mode=receive", sizeof(transport));
1208 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1209 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1210 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1211 snprintf(cmd, sizeof(cmd),
b6892136 1212 "Transport: %s\r\n",
b17d11c6 1213 transport);
76b0d03d
MS
1214 if (rt->accept_dynamic_rate)
1215 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1216 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1217 char real_res[41], real_csum[9];
1218 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1219 real_challenge);
1220 av_strlcatf(cmd, sizeof(cmd),
1221 "If-Match: %s\r\n"
1222 "RealChallenge2: %s, sd=%s\r\n",
1223 rt->session_id, real_res, real_csum);
1224 }
b17d11c6 1225 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1226 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1227 err = 1;
1228 goto fail;
7e6ca34f
RB
1229 } else if (reply->status_code != RTSP_STATUS_OK ||
1230 reply->nb_transports != 1) {
1617ad97
FB
1231 err = AVERROR_INVALIDDATA;
1232 goto fail;
1233 }
1234
1235 /* XXX: same protocol for all streams is required */
1236 if (i > 0) {
119b4668
RB
1237 if (reply->transports[0].lower_transport != rt->lower_transport ||
1238 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1239 err = AVERROR_INVALIDDATA;
1240 goto fail;
1241 }
1242 } else {
90abbdba 1243 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1244 rt->transport = reply->transports[0].transport;
1617ad97
FB
1245 }
1246
8c579c1c
MS
1247 /* Fail if the server responded with another lower transport mode
1248 * than what we requested. */
1249 if (reply->transports[0].lower_transport != lower_transport) {
1250 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1251 err = AVERROR_INVALIDDATA;
1252 goto fail;
1617ad97
FB
1253 }
1254
90abbdba
RB
1255 switch(reply->transports[0].lower_transport) {
1256 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1257 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1258 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1259 break;
115329f1 1260
c8965800 1261 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1262 char url[1024], options[30] = "";
c8965800 1263
9867aea5 1264 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1265 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1266 /* Use source address if specified */
1267 if (reply->transports[0].source[0]) {
1268 ff_url_join(url, sizeof(url), "rtp", NULL,
1269 reply->transports[0].source,
d8407339 1270 reply->transports[0].server_port_min, "%s", options);
619298a8 1271 } else {
7bac991f 1272 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1273 reply->transports[0].server_port_min, "%s", options);
619298a8 1274 }
c8965800 1275 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1276 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1277 err = AVERROR_INVALIDDATA;
1278 goto fail;
1617ad97 1279 }
9c8fa20d
MS
1280 /* Try to initialize the connection state in a
1281 * potential NAT router by sending dummy packets.
1282 * RTP/RTCP dummy packets are used for RDT, too.
1283 */
44b70ce5
MS
1284 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1285 CONFIG_RTPDEC)
bfc6db44 1286 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1287 break;
c8965800
RB
1288 }
1289 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1290 char url[1024], namebuf[50];
1291 struct sockaddr_storage addr;
c8965800
RB
1292 int port, ttl;
1293
7934b15d
MS
1294 if (reply->transports[0].destination.ss_family) {
1295 addr = reply->transports[0].destination;
c8965800
RB
1296 port = reply->transports[0].port_min;
1297 ttl = reply->transports[0].ttl;
1298 } else {
7934b15d 1299 addr = rtsp_st->sdp_ip;
c8965800
RB
1300 port = rtsp_st->sdp_port;
1301 ttl = rtsp_st->sdp_ttl;
1302 }
7934b15d
MS
1303 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1304 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1305 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1306 port, "?ttl=%d", ttl);
59d96941 1307 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE) < 0) {
c8965800
RB
1308 err = AVERROR_INVALIDDATA;
1309 goto fail;
1617ad97
FB
1310 }
1311 break;
1312 }
c8965800 1313 }
d1ccf0e0 1314
ee0cb67f 1315 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1316 goto fail;
1617ad97
FB
1317 }
1318
30e79845
RB
1319 if (reply->timeout > 0)
1320 rt->timeout = reply->timeout;
1321
2e889ae4 1322 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1323 rt->need_subscription = 1;
1324
53620bba
RB
1325 return 0;
1326
1327fail:
aeb2de1c 1328 ff_rtsp_undo_setup(s);
53620bba
RB
1329 return err;
1330}
1331
b8c2c41d
JA
1332void ff_rtsp_close_connections(AVFormatContext *s)
1333{
1334 RTSPState *rt = s->priv_data;
e52a9145
AK
1335 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1336 ffurl_close(rt->rtsp_hd);
6217b645 1337 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1338}
1339
3307e6ea 1340int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1341{
1342 RTSPState *rt = s->priv_data;
921da217
LB
1343 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1344 char *option_list, *option, *filename;
03f8fc08 1345 int port, err, tcp_fd;
354b7573 1346 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1347 int lower_transport_mask = 0;
2762a7a2 1348 char real_challenge[64] = "";
03f8fc08
MS
1349 struct sockaddr_storage peer;
1350 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1351
1352 if (!ff_network_init())
1353 return AVERROR(EIO);
eca4850c 1354
f5d33f52 1355 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1356 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1357 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1358 rt->control_transport = RTSP_MODE_TUNNEL;
1359 }
1360 /* Only pass through valid flags from here */
1361 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1362
1363redirect:
1364 lower_transport_mask = rt->lower_transport_mask;
53620bba 1365 /* extract hostname and port */
f3bfe388 1366 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1367 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1368 if (*auth) {
aa8bf2fb 1369 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1370 }
53620bba
RB
1371 if (port < 0)
1372 port = RTSP_DEFAULT_PORT;
1373
eca4850c 1374#if FF_API_RTSP_URL_OPTIONS
53620bba 1375 /* search for options */
602eb779 1376 option_list = strrchr(path, '?');
53620bba 1377 if (option_list) {
2a21adf9
MS
1378 /* Strip out the RTSP specific options, write out the rest of
1379 * the options back into the same string. */
1380 filename = option_list;
c8965800 1381 while (option_list) {
eca4850c 1382 int handled = 1;
53620bba 1383 /* move the option pointer */
921da217 1384 option = ++option_list;
53620bba
RB
1385 option_list = strchr(option_list, '&');
1386 if (option_list)
921da217
LB
1387 *option_list = 0;
1388
53620bba 1389 /* handle the options */
c8965800 1390 if (!strcmp(option, "udp")) {
7a033e08 1391 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1392 } else if (!strcmp(option, "multicast")) {
7a033e08 1393 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1394 } else if (!strcmp(option, "tcp")) {
7a033e08 1395 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1396 } else if(!strcmp(option, "http")) {
1397 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1398 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7 1399 } else if (!strcmp(option, "filter_src")) {
9867aea5 1400 rt->rtsp_flags |= RTSP_FLAG_FILTER_SRC;
c8965800 1401 } else {
2a21adf9
MS
1402 /* Write options back into the buffer, using memmove instead
1403 * of strcpy since the strings may overlap. */
1404 int len = strlen(option);
1405 memmove(++filename, option, len);
1406 filename += len;
921da217 1407 if (option_list) *filename = '&';
eca4850c 1408 handled = 0;
921da217 1409 }
eca4850c
MS
1410 if (handled)
1411 av_log(s, AV_LOG_WARNING, "Options passed via URL are "
1412 "deprecated, use -rtsp_transport "
1413 "and -rtsp_flags instead.\n");
53620bba 1414 }
921da217 1415 *filename = 0;
53620bba 1416 }
eca4850c 1417#endif
53620bba 1418
90abbdba 1419 if (!lower_transport_mask)
2a1d51c5 1420 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1421
3e24c770 1422 if (s->oformat) {
b7dc88fc
MS
1423 /* Only UDP or TCP - UDP multicast isn't supported. */
1424 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1425 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1426 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1427 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1428 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1429 err = AVERROR(EINVAL);
1430 goto fail;
1431 }
1432 }
1433
4bc5cc23
MS
1434 /* Construct the URI used in request; this is similar to s->filename,
1435 * but with authentication credentials removed and RTSP specific options
1436 * stripped out. */
1437 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1438 host, port, "%s", path);
1439
f5d33f52
JA
1440 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1441 /* set up initial handshake for tunneling */
1442 char httpname[1024];
1443 char sessioncookie[17];
1444 char headers[1024];
1445
10ed37b5 1446 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1447 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1448 av_get_random_seed(), av_get_random_seed());
1449
1450 /* GET requests */
59d96941 1451 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ) < 0) {
f5d33f52
JA
1452 err = AVERROR(EIO);
1453 goto fail;
1454 }
1455
1456 /* generate GET headers */
1457 snprintf(headers, sizeof(headers),
1458 "x-sessioncookie: %s\r\n"
1459 "Accept: application/x-rtsp-tunnelled\r\n"
1460 "Pragma: no-cache\r\n"
1461 "Cache-Control: no-cache\r\n",
1462 sessioncookie);
00e4a1f4 1463 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1464
1465 /* complete the connection */
62eaaeac 1466 if (ffurl_connect(rt->rtsp_hd)) {
f5d33f52
JA
1467 err = AVERROR(EIO);
1468 goto fail;
1469 }
1470
1471 /* POST requests */
59d96941 1472 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE) < 0 ) {
f5d33f52
JA
1473 err = AVERROR(EIO);
1474 goto fail;
1475 }
1476
1477 /* generate POST headers */
1478 snprintf(headers, sizeof(headers),
1479 "x-sessioncookie: %s\r\n"
1480 "Content-Type: application/x-rtsp-tunnelled\r\n"
1481 "Pragma: no-cache\r\n"
1482 "Cache-Control: no-cache\r\n"
1483 "Content-Length: 32767\r\n"
1484 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1485 sessioncookie);
00e4a1f4 1486 ff_http_set_headers(rt->rtsp_hd_out, headers);
d450cc4f 1487 av_opt_set(rt->rtsp_hd_out->priv_data, "chunksize", "-1", 0);
f5d33f52 1488
a8ead332
MS
1489 /* Initialize the authentication state for the POST session. The HTTP
1490 * protocol implementation doesn't properly handle multi-pass
1491 * authentication for POST requests, since it would require one of
1492 * the following:
1493 * - implementing Expect: 100-continue, which many HTTP servers
1494 * don't support anyway, even less the RTSP servers that do HTTP
1495 * tunneling
1496 * - sending the whole POST data until getting a 401 reply specifying
1497 * what authentication method to use, then resending all that data
1498 * - waiting for potential 401 replies directly after sending the
1499 * POST header (waiting for some unspecified time)
1500 * Therefore, we copy the full auth state, which works for both basic
1501 * and digest. (For digest, we would have to synchronize the nonce
1502 * count variable between the two sessions, if we'd do more requests
1503 * with the original session, though.)
1504 */
1505 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1506
9290f15d 1507 /* complete the connection */
62eaaeac 1508 if (ffurl_connect(rt->rtsp_hd_out)) {
9290f15d
MS
1509 err = AVERROR(EIO);
1510 goto fail;
1511 }
f5d33f52 1512 } else {
48e77473 1513 /* open the tcp connection */
41874d0a 1514 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
59d96941 1515 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE) < 0) {
41874d0a
JA
1516 err = AVERROR(EIO);
1517 goto fail;
1518 }
00e4a1f4 1519 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1520 }
53620bba
RB
1521 rt->seq = 0;
1522
1869ea03 1523 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1524 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1525 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1526 NULL, 0, NI_NUMERICHOST);
1527 }
1528
c8965800
RB
1529 /* request options supported by the server; this also detects server
1530 * type */
1cf151e9 1531 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1532 cmd[0] = 0;
2e889ae4 1533 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1534 av_strlcat(cmd,
f75e3da5 1535 /*
1cf151e9
RB
1536 * The following entries are required for proper
1537 * streaming from a Realmedia server. They are
1538 * interdependent in some way although we currently
1539 * don't quite understand how. Values were copied
1540 * from mplayer SVN r23589.
f75e3da5
DB
1541 * ClientChallenge is a 16-byte ID in hex
1542 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1543 */
1544 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1545 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1546 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1547 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1548 sizeof(cmd));
b17d11c6 1549 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1550 if (reply->status_code != RTSP_STATUS_OK) {
1551 err = AVERROR_INVALIDDATA;
1552 goto fail;
1553 }
1554
1555 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1556 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1557 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1558 continue;
7a86bafa
RB
1559 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1560 rt->server_type = RTSP_SERVER_WMS;
c8965800 1561 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1562 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1563 break;
1564 }
1565
44b70ce5 1566 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1567 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1568 else if (CONFIG_RTSP_MUXER)
c2688f3a 1569 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1570 if (err)
53620bba 1571 goto fail;
53620bba 1572
8a8754d8 1573 do {
c8965800
RB
1574 int lower_transport = ff_log2_tab[lower_transport_mask &
1575 ~(lower_transport_mask - 1)];
8a8754d8 1576
fef5649a 1577 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1578 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1579 real_challenge : NULL);
8a8754d8 1580 if (err < 0)
7e6ca34f 1581 goto fail;
90abbdba
RB
1582 lower_transport_mask &= ~(1 << lower_transport);
1583 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1584 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1585 goto fail;
1586 }
1587 } while (err);
53620bba 1588
2762a7a2
MS
1589 rt->lower_transport_mask = lower_transport_mask;
1590 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1591 rt->state = RTSP_STATE_IDLE;
c8965800 1592 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1593 return 0;
1594 fail:
3307e6ea 1595 ff_rtsp_close_streams(s);
b8c2c41d 1596 ff_rtsp_close_connections(s);
35cfd646 1597 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1598 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1599 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1600 reply->status_code,
1601 s->filename);
1602 goto redirect;
1603 }
57b5555c 1604 ff_network_close();
1617ad97
FB
1605 return err;
1606}
2e802e38 1607#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1608
44b70ce5 1609#if CONFIG_RTPDEC
0e59034e 1610static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1611 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1612{
1613 RTSPState *rt = s->priv_data;
1614 RTSPStream *rtsp_st;
a8475bbd
LB
1615 int n, i, ret, tcp_fd, timeout_cnt = 0;
1616 int max_p = 0;
1617 struct pollfd *p = rt->p;
0e59034e 1618
c8965800 1619 for (;;) {
0e59034e 1620 if (url_interrupt_cb())
c76374c6 1621 return AVERROR_EXIT;
321259c1
MS
1622 if (wait_end && wait_end - av_gettime() < 0)
1623 return AVERROR(EAGAIN);
a8475bbd 1624 max_p = 0;
0e59034e 1625 if (rt->rtsp_hd) {
1869ea03 1626 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1627 p[max_p].fd = tcp_fd;
1628 p[max_p++].events = POLLIN;
0e59034e 1629 } else {
0e59034e
RB
1630 tcp_fd = -1;
1631 }
c8965800 1632 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1633 rtsp_st = rt->rtsp_streams[i];
1634 if (rtsp_st->rtp_handle) {
1869ea03 1635 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1636 p[max_p++].events = POLLIN;
bfc6db44 1637 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1638 p[max_p++].events = POLLIN;
0e59034e
RB
1639 }
1640 }
a8475bbd 1641 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1642 if (n > 0) {
a8475bbd 1643 int j = 1 - (tcp_fd == -1);
9cba6f5f 1644 timeout_cnt = 0;
c8965800 1645 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1646 rtsp_st = rt->rtsp_streams[i];
1647 if (rtsp_st->rtp_handle) {
a8475bbd 1648 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1649 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1650 if (ret > 0) {
1651 *prtsp_st = rtsp_st;
1652 return ret;
1653 }
1654 }
a8475bbd 1655 j+=2;
0e59034e
RB
1656 }
1657 }
5fe8021a 1658#if CONFIG_RTSP_DEMUXER
a8475bbd 1659 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1660 RTSPMessageHeader reply;
1661
3df54c6b 1662 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1663 if (ret < 0)
1664 return ret;
0e59034e 1665 /* XXX: parse message */
c02fd3d2 1666 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1667 return 0;
1668 }
5fe8021a 1669#endif
9cba6f5f 1670 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1671 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1672 } else if (n < 0 && errno != EINTR)
1673 return AVERROR(errno);
0e59034e
RB
1674 }
1675}
1676
0526c6f7 1677int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1678{
1679 RTSPState *rt = s->priv_data;
1680 int ret, len;
321259c1
MS
1681 RTSPStream *rtsp_st, *first_queue_st = NULL;
1682 int64_t wait_end = 0;
0e59034e 1683
b20359f5
JA
1684 if (rt->nb_byes == rt->nb_rtsp_streams)
1685 return AVERROR_EOF;
1686
0e59034e
RB
1687 /* get next frames from the same RTP packet */
1688 if (rt->cur_transport_priv) {
c8965800 1689 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1690 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1691 } else
bfc6db44 1692 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1693 if (ret == 0) {
1694 rt->cur_transport_priv = NULL;
1695 return 0;
1696 } else if (ret == 1) {
1697 return 0;
c8965800 1698 } else
0e59034e 1699 rt->cur_transport_priv = NULL;
0e59034e
RB
1700 }
1701
321259c1
MS
1702 if (rt->transport == RTSP_TRANSPORT_RTP) {
1703 int i;
1704 int64_t first_queue_time = 0;
1705 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1706 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1707 int64_t queue_time;
1708 if (!rtpctx)
1709 continue;
1710 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1711 if (queue_time && (queue_time - first_queue_time < 0 ||
1712 !first_queue_time)) {
1713 first_queue_time = queue_time;
1714 first_queue_st = rt->rtsp_streams[i];
1715 }
1716 }
1717 if (first_queue_time)
1718 wait_end = first_queue_time + s->max_delay;
1719 }
1720
0e59034e
RB
1721 /* read next RTP packet */
1722 redo:
96a7c975
MS
1723 if (!rt->recvbuf) {
1724 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1725 if (!rt->recvbuf)
1726 return AVERROR(ENOMEM);
1727 }
1728
0e59034e
RB
1729 switch(rt->lower_transport) {
1730 default:
5fe8021a 1731#if CONFIG_RTSP_DEMUXER
0e59034e 1732 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1733 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1734 break;
5fe8021a 1735#endif
0e59034e
RB
1736 case RTSP_LOWER_TRANSPORT_UDP:
1737 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1738 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1739 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1740 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1741 break;
1742 }
321259c1
MS
1743 if (len == AVERROR(EAGAIN) && first_queue_st &&
1744 rt->transport == RTSP_TRANSPORT_RTP) {
1745 rtsp_st = first_queue_st;
bfc6db44 1746 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1747 goto end;
1748 }
0e59034e
RB
1749 if (len < 0)
1750 return len;
1751 if (len == 0)
1752 return AVERROR_EOF;
c8965800 1753 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1754 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1755 } else {
bfc6db44 1756 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1757 if (ret < 0) {
1758 /* Either bad packet, or a RTCP packet. Check if the
1759 * first_rtcp_ntp_time field was initialized. */
1760 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1761 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1762 /* first_rtcp_ntp_time has been initialized for this stream,
1763 * copy the same value to all other uninitialized streams,
1764 * in order to map their timestamp origin to the same ntp time
1765 * as this one. */
1766 int i;
3a1cdcc7
MS
1767 AVStream *st = NULL;
1768 if (rtsp_st->stream_index >= 0)
1769 st = s->streams[rtsp_st->stream_index];
2cab6b48 1770 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1771 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1772 AVStream *st2 = NULL;
1773 if (rt->rtsp_streams[i]->stream_index >= 0)
1774 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1775 if (rtpctx2 && st && st2 &&
1776 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1777 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1778 rtpctx2->rtcp_ts_offset = av_rescale_q(
1779 rtpctx->rtcp_ts_offset, st->time_base,
1780 st2->time_base);
1781 }
2cab6b48
MS
1782 }
1783 }
b20359f5
JA
1784 if (ret == -RTCP_BYE) {
1785 rt->nb_byes++;
1786
1787 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1788 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1789
1790 if (rt->nb_byes == rt->nb_rtsp_streams)
1791 return AVERROR_EOF;
1792 }
2cab6b48
MS
1793 }
1794 }
321259c1 1795end:
0e59034e
RB
1796 if (ret < 0)
1797 goto redo;
c8965800 1798 if (ret == 1)
0e59034e
RB
1799 /* more packets may follow, so we save the RTP context */
1800 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1801
1802 return ret;
1803}
44b70ce5 1804#endif /* CONFIG_RTPDEC */
0e59034e 1805
44b70ce5 1806#if CONFIG_SDP_DEMUXER
cb1fdc61 1807static int sdp_probe(AVProbeData *p1)
93ced3e8 1808{
0e1ceacd 1809 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1810
3fbd12d1 1811 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1812 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1813 if (p + sizeof("c=IN IP") - 1 < p_end &&
1814 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1815 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1816
c8965800 1817 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1818 if (++p >= p_end)
cb1fdc61 1819 break;
cb1fdc61
FB
1820 if (*p == '\r')
1821 p++;
1822 }
93ced3e8
FB
1823 return 0;
1824}
1825
c8965800 1826static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1827{
8b1ab7bf 1828 RTSPState *rt = s->priv_data;
93ced3e8
FB
1829 RTSPStream *rtsp_st;
1830 int size, i, err;
1831 char *content;
1832 char url[1024];
1833
57b5555c
MS
1834 if (!ff_network_init())
1835 return AVERROR(EIO);
1836
93ced3e8
FB
1837 /* read the whole sdp file */
1838 /* XXX: better loading */
1839 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1840 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1841 if (size <= 0) {
1842 av_free(content);
1843 return AVERROR_INVALIDDATA;
1844 }
1845 content[size] ='\0';
1846
f81c7ac7 1847 err = ff_sdp_parse(s, content);
93ced3e8 1848 av_free(content);
f81c7ac7 1849 if (err) goto fail;
93ced3e8
FB
1850
1851 /* open each RTP stream */
c8965800 1852 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1853 char namebuf[50];
8b1ab7bf 1854 rtsp_st = rt->rtsp_streams[i];
115329f1 1855
3fbd12d1
MS
1856 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1857 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1858 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1859 namebuf, rtsp_st->sdp_port,
51369f28
MS
1860 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1861 rtsp_st->sdp_ttl,
1862 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
59d96941 1863 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE) < 0) {
93ced3e8
FB
1864 err = AVERROR_INVALIDDATA;
1865 goto fail;
1866 }
ee0cb67f 1867 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1868 goto fail;
93ced3e8
FB
1869 }
1870 return 0;
c8965800 1871fail:
3307e6ea 1872 ff_rtsp_close_streams(s);
57b5555c 1873 ff_network_close();
93ced3e8
FB
1874 return err;
1875}
1876
93ced3e8
FB
1877static int sdp_read_close(AVFormatContext *s)
1878{
3307e6ea 1879 ff_rtsp_close_streams(s);
57b5555c 1880 ff_network_close();
93ced3e8
FB
1881 return 0;
1882}
1883
51369f28
MS
1884static const AVClass sdp_demuxer_class = {
1885 .class_name = "SDP demuxer",
1886 .item_name = av_default_item_name,
1887 .option = sdp_options,
1888 .version = LIBAVUTIL_VERSION_INT,
1889};
1890
c6610a21 1891AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1892 .name = "sdp",
1893 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1894 .priv_data_size = sizeof(RTSPState),
1895 .read_probe = sdp_probe,
1896 .read_header = sdp_read_header,
1897 .read_packet = ff_rtsp_fetch_packet,
1898 .read_close = sdp_read_close,
51369f28 1899 .priv_class = &sdp_demuxer_class
93ced3e8 1900};
44b70ce5 1901#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1902
44b70ce5 1903#if CONFIG_RTP_DEMUXER
44594cc7
MS
1904static int rtp_probe(AVProbeData *p)
1905{
1906 if (av_strstart(p->filename, "rtp:", NULL))
1907 return AVPROBE_SCORE_MAX;
1908 return 0;
1909}
1910
1911static int rtp_read_header(AVFormatContext *s,
1912 AVFormatParameters *ap)
1913{
1914 uint8_t recvbuf[1500];
1915 char host[500], sdp[500];
1916 int ret, port;
1917 URLContext* in = NULL;
1918 int payload_type;
1919 AVCodecContext codec;
1920 struct sockaddr_storage addr;
ae628ec1 1921 AVIOContext pb;
44594cc7
MS
1922 socklen_t addrlen = sizeof(addr);
1923
1924 if (!ff_network_init())
1925 return AVERROR(EIO);
1926
59d96941 1927 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ);
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MS
1928 if (ret)
1929 goto fail;
1930
1931 while (1) {
bc371aca 1932 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
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1933 if (ret == AVERROR(EAGAIN))
1934 continue;
1935 if (ret < 0)
1936 goto fail;
1937 if (ret < 12) {
1938 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1939 continue;
1940 }
1941
1942 if ((recvbuf[0] & 0xc0) != 0x80) {
1943 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1944 "received\n");
1945 continue;
1946 }
1947
1948 payload_type = recvbuf[1] & 0x7f;
1949 break;
1950 }
1869ea03 1951 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 1952 ffurl_close(in);
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1953 in = NULL;
1954
1955 memset(&codec, 0, sizeof(codec));
1956 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1957 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1958 "without an SDP file describing it\n",
1959 payload_type);
1960 goto fail;
1961 }
1962 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1963 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1964 "properly you need an SDP file "
1965 "describing it\n");
1966 }
1967
1968 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1969 NULL, 0, s->filename);
1970
1971 snprintf(sdp, sizeof(sdp),
1972 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1973 addr.ss_family == AF_INET ? 4 : 6, host,
1974 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1975 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1976 port, payload_type);
1977 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1978
e731b8d8 1979 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
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1980 s->pb = &pb;
1981
1982 /* sdp_read_header initializes this again */
1983 ff_network_close();
1984
1985 ret = sdp_read_header(s, ap);
1986 s->pb = NULL;
1987 return ret;
1988
1989fail:
1990 if (in)
e52a9145 1991 ffurl_close(in);
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1992 ff_network_close();
1993 return ret;
1994}
1995
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1996static const AVClass rtp_demuxer_class = {
1997 .class_name = "RTP demuxer",
1998 .item_name = av_default_item_name,
1999 .option = rtp_options,
2000 .version = LIBAVUTIL_VERSION_INT,
2001};
2002
c6610a21 2003AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
2004 .name = "rtp",
2005 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
2006 .priv_data_size = sizeof(RTSPState),
2007 .read_probe = rtp_probe,
2008 .read_header = rtp_read_header,
2009 .read_packet = ff_rtsp_fetch_packet,
2010 .read_close = sdp_read_close,
44594cc7 2011 .flags = AVFMT_NOFILE,
51369f28 2012 .priv_class = &rtp_demuxer_class
44594cc7 2013};
44b70ce5 2014#endif /* CONFIG_RTP_DEMUXER */
44594cc7 2015