rtsp: Allow specifying the UDP port range via AVOptions
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
2912e87a 5 * This file is part of Libav.
b78e7197 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
1617ad97
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
1617ad97 11 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
1617ad97
FB
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
2912e87a 18 * License along with Libav; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1617ad97 20 */
245976da 21
f9337897 22#include "libavutil/base64.h"
245976da 23#include "libavutil/avstring.h"
6a5d31ac 24#include "libavutil/intreadwrite.h"
0ebcdf5c 25#include "libavutil/mathematics.h"
9fcae973 26#include "libavutil/parseutils.h"
f5d33f52 27#include "libavutil/random_seed.h"
d2d67e42 28#include "libavutil/dict.h"
d450cc4f 29#include "libavutil/opt.h"
1617ad97 30#include "avformat.h"
e731b8d8 31#include "avio_internal.h"
1617ad97 32
db0ed93e 33#include <sys/time.h>
a8475bbd
LB
34#if HAVE_POLL_H
35#include <poll.h>
6ad1c9c9 36#endif
e4a9e3cc 37#include "internal.h"
42572ef5 38#include "network.h"
cbfa66d0 39#include "os_support.h"
f5d33f52 40#include "http.h"
c971ff19 41#include "rtsp.h"
1617ad97 42
302879cb 43#include "rtpdec.h"
e9dea59f 44#include "rdt.h"
965a3ddb 45#include "rtpdec_formats.h"
a493f80a 46#include "rtpenc_chain.h"
5652bb94 47#include "url.h"
17fff881 48#include "rtpenc.h"
4934884a 49
1617ad97
FB
50//#define DEBUG
51
a8475bbd 52/* Timeout values for socket poll, in ms,
9cba6f5f 53 * and read_packet(), in seconds */
a8475bbd 54#define POLL_TIMEOUT_MS 100
9cba6f5f 55#define READ_PACKET_TIMEOUT_S 10
a8475bbd 56#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 57#define SDP_MAX_SIZE 16384
96a7c975 58#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
9cba6f5f 59
2c9aa024
MS
60#define OFFSET(x) offsetof(RTSPState, x)
61#define DEC AV_OPT_FLAG_DECODING_PARAM
eca4850c 62#define ENC AV_OPT_FLAG_ENCODING_PARAM
3a6765fb
MS
63
64#define RTSP_FLAG_OPTS(name, longname) \
65 { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
66 { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" }
67
f011fcd6
JB
68#define RTSP_MEDIATYPE_OPTS(name, longname) \
69 { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
70 { "video", "Video", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
71 { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
72 { "data", "Data", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }
73
17fff881 74const AVOption ff_rtsp_options[] = {
2c9aa024 75 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {0}, 0, 1, DEC },
17fff881 76 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
eca4850c
MS
77 { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
78 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
79 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
80 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
81 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {(1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
3a6765fb 82 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
f011fcd6 83 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
dbb06b8c
MS
84 { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
85 { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
17fff881
MS
86 { NULL },
87};
88
51369f28
MS
89static const AVOption sdp_options[] = {
90 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
f011fcd6 91 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
51369f28
MS
92 { NULL },
93};
94
95static const AVOption rtp_options[] = {
96 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
97 { NULL },
98};
99
1ef36a70
RB
100static void get_word_until_chars(char *buf, int buf_size,
101 const char *sep, const char **pp)
1617ad97
FB
102{
103 const char *p;
104 char *q;
105
106 p = *pp;
30619e6e 107 p += strspn(p, SPACE_CHARS);
1617ad97
FB
108 q = buf;
109 while (!strchr(sep, *p) && *p != '\0') {
110 if ((q - buf) < buf_size - 1)
111 *q++ = *p;
112 p++;
113 }
114 if (buf_size > 0)
115 *q = '\0';
116 *pp = p;
117}
118
1ef36a70
RB
119static void get_word_sep(char *buf, int buf_size, const char *sep,
120 const char **pp)
1617ad97 121{
1ef36a70
RB
122 if (**pp == '/') (*pp)++;
123 get_word_until_chars(buf, buf_size, sep, pp);
124}
1617ad97 125
1ef36a70
RB
126static void get_word(char *buf, int buf_size, const char **pp)
127{
128 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
129}
130
8bf0f969
MS
131/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
132 * and end time.
133 * Used for seeking in the rtp stream.
134 */
135static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
136{
137 char buf[256];
138
139 p += strspn(p, SPACE_CHARS);
140 if (!av_stristart(p, "npt=", &p))
141 return;
142
143 *start = AV_NOPTS_VALUE;
144 *end = AV_NOPTS_VALUE;
145
146 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 147 av_parse_time(start, buf, 1);
8bf0f969
MS
148 if (*p == '-') {
149 p++;
150 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 151 av_parse_time(end, buf, 1);
8bf0f969
MS
152 }
153// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
154// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
155}
156
157static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
158{
159 struct addrinfo hints, *ai = NULL;
160 memset(&hints, 0, sizeof(hints));
161 hints.ai_flags = AI_NUMERICHOST;
162 if (getaddrinfo(buf, NULL, &hints, &ai))
163 return -1;
164 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
165 freeaddrinfo(ai);
166 return 0;
167}
168
44b70ce5 169#if CONFIG_RTPDEC
003eb642
MS
170static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
171 RTSPStream *rtsp_st, AVCodecContext *codec)
172{
173 if (!handler)
174 return;
175 codec->codec_id = handler->codec_id;
176 rtsp_st->dynamic_handler = handler;
4b3dc857 177 if (handler->alloc) {
9261e6cf 178 rtsp_st->dynamic_protocol_context = handler->alloc();
4b3dc857
MS
179 if (!rtsp_st->dynamic_protocol_context)
180 rtsp_st->dynamic_handler = NULL;
181 }
003eb642
MS
182}
183
c8965800 184/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 185static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 186 AVStream *st, RTSPStream *rtsp_st,
c8965800 187 int payload_type, const char *p)
93ced3e8 188{
86b6e387 189 AVCodecContext *codec = st->codec;
93ced3e8 190 char buf[256];
d1ccf0e0
RD
191 int i;
192 AVCodec *c;
7b49ce2e 193 const char *c_name;
93ced3e8 194
d1ccf0e0 195 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
196 * see if we can handle this kind of payload.
197 * The space should normally not be there but some Real streams or
198 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
199 * have a trailing space. */
200 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 201 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
202 RTPDynamicProtocolHandler *handler =
203 ff_rtp_handler_find_by_name(buf, codec->codec_type);
204 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
205 /* If no dynamic handler was found, check with the list of standard
206 * allocated types, if such a stream for some reason happens to
207 * use a private payload type. This isn't handled in rtpdec.c, since
208 * the format name from the rtpmap line never is passed into rtpdec. */
209 if (!rtsp_st->dynamic_handler)
210 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 211 } else {
c8965800
RB
212 /* We are in a standard case
213 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 214 /* search into AVRtpPayloadTypes[] */
7ed19d7f 215 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
216 }
217
218 c = avcodec_find_decoder(codec->codec_id);
219 if (c && c->name)
7b49ce2e 220 c_name = c->name;
d1ccf0e0 221 else
170870b7 222 c_name = "(null)";
d1ccf0e0 223
7515ed0c
RB
224 get_word_sep(buf, sizeof(buf), "/", &p);
225 i = atoi(buf);
226 switch (codec->codec_type) {
72415b2a 227 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
228 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
229 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
230 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
231 if (i > 0) {
232 codec->sample_rate = i;
c3f9ebf7 233 avpriv_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
234 get_word_sep(buf, sizeof(buf), "/", &p);
235 i = atoi(buf);
236 if (i > 0)
237 codec->channels = i;
238 // TODO: there is a bug here; if it is a mono stream, and
239 // less than 22000Hz, faad upconverts to stereo and twice
240 // the frequency. No problem, but the sample rate is being
241 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 242 }
7515ed0c
RB
243 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
244 codec->sample_rate);
245 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
246 codec->channels);
247 break;
72415b2a 248 case AVMEDIA_TYPE_VIDEO:
7515ed0c 249 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387 250 if (i > 0)
c3f9ebf7 251 avpriv_set_pts_info(st, 32, 1, i);
7515ed0c
RB
252 break;
253 default:
254 break;
255 }
25836606
MS
256 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init)
257 rtsp_st->dynamic_handler->init(s, st->index,
258 rtsp_st->dynamic_protocol_context);
7515ed0c 259 return 0;
93ced3e8
FB
260}
261
c2bfd816 262/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
263 * is broken out as a function because it is used in rtp_h264.c, which is
264 * forthcoming. */
3307e6ea 265int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 266 char *value, int value_size)
d0deedcb 267{
30619e6e 268 *p += strspn(*p, SPACE_CHARS);
c8965800 269 if (**p) {
d0deedcb
RM
270 get_word_sep(attr, attr_size, "=", p);
271 if (**p == '=')
272 (*p)++;
273 get_word_sep(value, value_size, ";", p);
274 if (**p == ';')
275 (*p)++;
276 return 1;
277 }
278 return 0;
279}
280
93ced3e8
FB
281typedef struct SDPParseState {
282 /* SDP only */
3fbd12d1 283 struct sockaddr_storage default_ip;
c8965800
RB
284 int default_ttl;
285 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
286} SDPParseState;
287
288static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
289 int letter, const char *buf)
290{
8b1ab7bf 291 RTSPState *rt = s->priv_data;
1617ad97
FB
292 char buf1[64], st_type[64];
293 const char *p;
72415b2a 294 enum AVMediaType codec_type;
fb65d2ca 295 int payload_type, i;
1617ad97
FB
296 AVStream *st;
297 RTSPStream *rtsp_st;
3fbd12d1 298 struct sockaddr_storage sdp_ip;
93ced3e8
FB
299 int ttl;
300
dfd2a005 301 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
302
303 p = buf;
cb760a47
RB
304 if (s1->skip_media && letter != 'm')
305 return;
c8965800 306 switch (letter) {
93ced3e8
FB
307 case 'c':
308 get_word(buf1, sizeof(buf1), &p);
309 if (strcmp(buf1, "IN") != 0)
310 return;
311 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 312 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
313 return;
314 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 315 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
316 return;
317 ttl = 16;
318 if (*p == '/') {
319 p++;
320 get_word_sep(buf1, sizeof(buf1), "/", &p);
321 ttl = atoi(buf1);
322 }
323 if (s->nb_streams == 0) {
324 s1->default_ip = sdp_ip;
325 s1->default_ttl = ttl;
326 } else {
d9c0510e 327 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
328 rtsp_st->sdp_ip = sdp_ip;
329 rtsp_st->sdp_ttl = ttl;
330 }
331 break;
1617ad97 332 case 's':
d2d67e42 333 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
334 break;
335 case 'i':
336 if (s->nb_streams == 0) {
d2d67e42 337 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
338 break;
339 }
340 break;
341 case 'm':
342 /* new stream */
cb760a47 343 s1->skip_media = 0;
f011fcd6 344 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
345 get_word(st_type, sizeof(st_type), &p);
346 if (!strcmp(st_type, "audio")) {
72415b2a 347 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 348 } else if (!strcmp(st_type, "video")) {
72415b2a 349 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 350 } else if (!strcmp(st_type, "application")) {
72415b2a 351 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
352 }
353 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 354 s1->skip_media = 1;
1617ad97
FB
355 return;
356 }
1617ad97
FB
357 rtsp_st = av_mallocz(sizeof(RTSPStream));
358 if (!rtsp_st)
359 return;
8b1ab7bf
FB
360 rtsp_st->stream_index = -1;
361 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
362
363 rtsp_st->sdp_ip = s1->default_ip;
364 rtsp_st->sdp_ttl = s1->default_ttl;
365
93ced3e8
FB
366 get_word(buf1, sizeof(buf1), &p); /* port */
367 rtsp_st->sdp_port = atoi(buf1);
368
369 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 370
93ced3e8
FB
371 /* XXX: handle list of formats */
372 get_word(buf1, sizeof(buf1), &p); /* format list */
373 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 374
7ed19d7f 375 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
376 /* no corresponding stream */
377 } else {
84ad31ff 378 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
379 if (!st)
380 return;
84ad31ff 381 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 382 rtsp_st->stream_index = st->index;
01f4895c 383 st->codec->codec_type = codec_type;
d1ccf0e0 384 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 385 RTPDynamicProtocolHandler *handler;
8b1ab7bf 386 /* if standard payload type, we can find the codec right now */
bf6d9818 387 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
388 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
389 st->codec->sample_rate > 0)
c3f9ebf7 390 avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
391 /* Even static payload types may need a custom depacketizer */
392 handler = ff_rtp_handler_find_by_id(
393 rtsp_st->sdp_payload_type, st->codec->codec_type);
394 init_rtp_handler(handler, rtsp_st, st->codec);
25836606
MS
395 if (handler && handler->init)
396 handler->init(s, st->index,
397 rtsp_st->dynamic_protocol_context);
8b1ab7bf
FB
398 }
399 }
1617ad97 400 /* put a default control url */
00eb13e0 401 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 402 sizeof(rtsp_st->control_url));
1617ad97
FB
403 break;
404 case 'a':
00eb13e0
AS
405 if (av_strstart(p, "control:", &p)) {
406 if (s->nb_streams == 0) {
407 if (!strncmp(p, "rtsp://", 7))
408 av_strlcpy(rt->control_uri, p,
409 sizeof(rt->control_uri));
410 } else {
0b6a7ff4
MS
411 char proto[32];
412 /* get the control url */
d9c0510e 413 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 414
0b6a7ff4
MS
415 /* XXX: may need to add full url resolution */
416 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
417 NULL, NULL, 0, p);
418 if (proto[0] == '\0') {
419 /* relative control URL */
420 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
421 av_strlcat(rtsp_st->control_url, "/",
422 sizeof(rtsp_st->control_url));
423 av_strlcat(rtsp_st->control_url, p,
424 sizeof(rtsp_st->control_url));
425 } else
426 av_strlcpy(rtsp_st->control_url, p,
427 sizeof(rtsp_st->control_url));
00eb13e0 428 }
83d14c85 429 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 430 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 431 get_word(buf1, sizeof(buf1), &p);
93ced3e8 432 payload_type = atoi(buf1);
83d14c85 433 st = s->streams[s->nb_streams - 1];
d9c0510e 434 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
86b6e387 435 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
436 } else if (av_strstart(p, "fmtp:", &p) ||
437 av_strstart(p, "framesize:", &p)) {
93ced3e8 438 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
439 // let dynamic protocol handlers have a stab at the line.
440 get_word(buf1, sizeof(buf1), &p);
441 payload_type = atoi(buf1);
d9c0510e
MS
442 for (i = 0; i < rt->nb_rtsp_streams; i++) {
443 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
444 if (rtsp_st->sdp_payload_type == payload_type &&
445 rtsp_st->dynamic_handler &&
446 rtsp_st->dynamic_handler->parse_sdp_a_line)
447 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
448 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 449 }
c8965800 450 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
451 int64_t start, end;
452
453 // this is so that seeking on a streamed file can work.
454 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
455 s->start_time = start;
456 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
457 s->duration = (end == AV_NOPTS_VALUE) ?
458 AV_NOPTS_VALUE : end - start;
119b4668
RB
459 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
460 if (atoi(p) == 1)
461 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
462 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
463 s->nb_streams > 0) {
464 st = s->streams[s->nb_streams - 1];
465 st->codec->sample_rate = atoi(p);
1a30d541
RB
466 } else {
467 if (rt->server_type == RTSP_SERVER_WMS)
468 ff_wms_parse_sdp_a_line(s, p);
469 if (s->nb_streams > 0) {
c4a3d032
RB
470 if (rt->server_type == RTSP_SERVER_REAL)
471 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
472
d9c0510e 473 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
c4a3d032
RB
474 if (rtsp_st->dynamic_handler &&
475 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
476 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
477 s->nb_streams - 1,
c4a3d032 478 rtsp_st->dynamic_protocol_context, buf);
1a30d541 479 }
1617ad97
FB
480 }
481 break;
482 }
483}
484
0526c6f7 485int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 486{
a8475bbd 487 RTSPState *rt = s->priv_data;
1617ad97
FB
488 const char *p;
489 int letter;
9211bcdd
RB
490 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
491 * contain long SDP lines containing complete ASF Headers (several
492 * kB) or arrays of MDPR (RM stream descriptor) headers plus
493 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
494 * buffer is large.
495 *
afcea58c
JA
496 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
497 * in rtpdec_xiph.c. */
373afbaf 498 char buf[16384], *q;
93ced3e8 499 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 500
93ced3e8 501 memset(s1, 0, sizeof(SDPParseState));
1617ad97 502 p = content;
c8965800 503 for (;;) {
30619e6e 504 p += strspn(p, SPACE_CHARS);
1617ad97
FB
505 letter = *p;
506 if (letter == '\0')
507 break;
508 p++;
509 if (*p != '=')
510 goto next_line;
511 p++;
512 /* get the content */
513 q = buf;
b6892136 514 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
515 if ((q - buf) < sizeof(buf) - 1)
516 *q++ = *p;
517 p++;
518 }
519 *q = '\0';
93ced3e8 520 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
521 next_line:
522 while (*p != '\n' && *p != '\0')
523 p++;
524 if (*p == '\n')
525 p++;
526 }
a8475bbd
LB
527 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
528 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
529 return 0;
530}
44b70ce5 531#endif /* CONFIG_RTPDEC */
1617ad97 532
93e7490e
MS
533void ff_rtsp_undo_setup(AVFormatContext *s)
534{
535 RTSPState *rt = s->priv_data;
536 int i;
537
538 for (i = 0; i < rt->nb_rtsp_streams; i++) {
539 RTSPStream *rtsp_st = rt->rtsp_streams[i];
540 if (!rtsp_st)
541 continue;
542 if (rtsp_st->transport_priv) {
543 if (s->oformat) {
544 AVFormatContext *rtpctx = rtsp_st->transport_priv;
545 av_write_trailer(rtpctx);
546 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
547 uint8_t *ptr;
6dc7d80d 548 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
549 av_free(ptr);
550 } else {
22a3212e 551 avio_close(rtpctx->pb);
93e7490e 552 }
b22dbb29 553 avformat_free_context(rtpctx);
93e7490e
MS
554 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
555 ff_rdt_parse_close(rtsp_st->transport_priv);
556 else if (CONFIG_RTPDEC)
bfc6db44 557 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
558 }
559 rtsp_st->transport_priv = NULL;
560 if (rtsp_st->rtp_handle)
e52a9145 561 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
562 rtsp_st->rtp_handle = NULL;
563 }
564}
565
1ced9da3 566/* close and free RTSP streams */
3307e6ea 567void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 568{
52aa4338 569 RTSPState *rt = s->priv_data;
1ced9da3
LA
570 int i;
571 RTSPStream *rtsp_st;
572
93e7490e 573 ff_rtsp_undo_setup(s);
c8965800 574 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
575 rtsp_st = rt->rtsp_streams[i];
576 if (rtsp_st) {
1ced9da3 577 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 578 rtsp_st->dynamic_handler->free(
c8965800 579 rtsp_st->dynamic_protocol_context);
ea7f0807 580 av_free(rtsp_st);
1ced9da3
LA
581 }
582 }
583 av_free(rt->rtsp_streams);
584 if (rt->asf_ctx) {
cd3716b9 585 avformat_close_input(&rt->asf_ctx);
1ced9da3 586 }
a8475bbd 587 av_free(rt->p);
96a7c975 588 av_free(rt->recvbuf);
1ced9da3
LA
589}
590
c8965800 591static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
592{
593 RTSPState *rt = s->priv_data;
594 AVStream *st = NULL;
595
596 /* open the RTP context */
597 if (rtsp_st->stream_index >= 0)
598 st = s->streams[rtsp_st->stream_index];
599 if (!st)
600 s->ctx_flags |= AVFMTCTX_NOHEADER;
601
44b70ce5 602 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
603 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
604 rtsp_st->rtp_handle,
605 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 606 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 607 rtsp_st->rtp_handle = NULL;
44b70ce5 608 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
609 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
610 rtsp_st->dynamic_protocol_context,
611 rtsp_st->dynamic_handler);
44b70ce5 612 else if (CONFIG_RTPDEC)
bfc6db44 613 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
614 rtsp_st->sdp_payload_type,
615 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
616 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
617
618 if (!rtsp_st->transport_priv) {
619 return AVERROR(ENOMEM);
44b70ce5 620 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 621 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
622 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
623 rtsp_st->dynamic_protocol_context,
624 rtsp_st->dynamic_handler);
1ced9da3
LA
625 }
626 }
627
628 return 0;
629}
630
6f5a3d0a 631#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
632static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
633{
634 const char *p;
635 int v;
636
637 p = *pp;
30619e6e 638 p += strspn(p, SPACE_CHARS);
1617ad97
FB
639 v = strtol(p, (char **)&p, 10);
640 if (*p == '-') {
641 p++;
642 *min_ptr = v;
643 v = strtol(p, (char **)&p, 10);
644 *max_ptr = v;
645 } else {
646 *min_ptr = v;
647 *max_ptr = v;
648 }
649 *pp = p;
650}
651
652/* XXX: only one transport specification is parsed */
a9e534d5 653static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
654{
655 char transport_protocol[16];
656 char profile[16];
657 char lower_transport[16];
658 char parameter[16];
659 RTSPTransportField *th;
660 char buf[256];
115329f1 661
1617ad97 662 reply->nb_transports = 0;
115329f1 663
c8965800 664 for (;;) {
30619e6e 665 p += strspn(p, SPACE_CHARS);
1617ad97
FB
666 if (*p == '\0')
667 break;
668
669 th = &reply->transports[reply->nb_transports];
670
115329f1 671 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 672 "/", &p);
bb3244de 673 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
674 get_word_sep(profile, sizeof(profile), "/;,", &p);
675 lower_transport[0] = '\0';
676 /* rtp/avp/<protocol> */
677 if (*p == '/') {
7ecc634e
LB
678 get_word_sep(lower_transport, sizeof(lower_transport),
679 ";,", &p);
119b4668
RB
680 }
681 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
682 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
683 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 684 /* x-pn-tng/<protocol> */
e1502118
LB
685 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
686 profile[0] = '\0';
119b4668 687 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 688 }
bb3244de 689 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 690 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 691 else
90abbdba 692 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 693
1617ad97
FB
694 if (*p == ';')
695 p++;
696 /* get each parameter */
697 while (*p != '\0' && *p != ',') {
698 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
699 if (!strcmp(parameter, "port")) {
700 if (*p == '=') {
701 p++;
702 rtsp_parse_range(&th->port_min, &th->port_max, &p);
703 }
704 } else if (!strcmp(parameter, "client_port")) {
705 if (*p == '=') {
706 p++;
115329f1 707 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
708 &th->client_port_max, &p);
709 }
710 } else if (!strcmp(parameter, "server_port")) {
711 if (*p == '=') {
712 p++;
115329f1 713 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
714 &th->server_port_max, &p);
715 }
716 } else if (!strcmp(parameter, "interleaved")) {
717 if (*p == '=') {
718 p++;
115329f1 719 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
720 &th->interleaved_max, &p);
721 }
722 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
723 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
724 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
725 } else if (!strcmp(parameter, "ttl")) {
726 if (*p == '=') {
727 p++;
728 th->ttl = strtol(p, (char **)&p, 10);
729 }
730 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
731 if (*p == '=') {
732 p++;
733 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 734 get_sockaddr(buf, &th->destination);
1617ad97 735 }
619298a8
JW
736 } else if (!strcmp(parameter, "source")) {
737 if (*p == '=') {
738 p++;
739 get_word_sep(buf, sizeof(buf), ";,", &p);
740 av_strlcpy(th->source, buf, sizeof(th->source));
741 }
1617ad97 742 }
619298a8 743
1617ad97
FB
744 while (*p != ';' && *p != '\0' && *p != ',')
745 p++;
746 if (*p == ';')
747 p++;
748 }
749 if (*p == ',')
750 p++;
751
752 reply->nb_transports++;
753 }
754}
755
29db7c3a
MS
756static void handle_rtp_info(RTSPState *rt, const char *url,
757 uint32_t seq, uint32_t rtptime)
758{
759 int i;
760 if (!rtptime || !url[0])
761 return;
762 if (rt->transport != RTSP_TRANSPORT_RTP)
763 return;
764 for (i = 0; i < rt->nb_rtsp_streams; i++) {
765 RTSPStream *rtsp_st = rt->rtsp_streams[i];
766 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
767 if (!rtpctx)
768 continue;
769 if (!strcmp(rtsp_st->control_url, url)) {
770 rtpctx->base_timestamp = rtptime;
771 break;
772 }
773 }
774}
775
776static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
777{
778 int read = 0;
779 char key[20], value[1024], url[1024] = "";
780 uint32_t seq = 0, rtptime = 0;
781
782 for (;;) {
783 p += strspn(p, SPACE_CHARS);
784 if (!*p)
785 break;
786 get_word_sep(key, sizeof(key), "=", &p);
787 if (*p != '=')
788 break;
789 p++;
790 get_word_sep(value, sizeof(value), ";, ", &p);
791 read++;
792 if (!strcmp(key, "url"))
793 av_strlcpy(url, value, sizeof(url));
794 else if (!strcmp(key, "seq"))
4515f9b5 795 seq = strtoul(value, NULL, 10);
29db7c3a 796 else if (!strcmp(key, "rtptime"))
4515f9b5 797 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
798 if (*p == ',') {
799 handle_rtp_info(rt, url, seq, rtptime);
800 url[0] = '\0';
801 seq = rtptime = 0;
802 read = 0;
803 }
804 if (*p)
805 p++;
806 }
807 if (read > 0)
808 handle_rtp_info(rt, url, seq, rtptime);
809}
810
2626308a 811void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 812 RTSPState *rt, const char *method)
1617ad97
FB
813{
814 const char *p;
815
816 /* NOTE: we do case independent match for broken servers */
817 p = buf;
f7d78f36 818 if (av_stristart(p, "Session:", &p)) {
30e79845 819 int t;
1617ad97 820 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
821 if (av_stristart(p, ";timeout=", &p) &&
822 (t = strtol(p, NULL, 10)) > 0) {
823 reply->timeout = t;
824 }
f7d78f36 825 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 826 reply->content_length = strtol(p, NULL, 10);
f7d78f36 827 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 828 rtsp_parse_transport(reply, p);
f7d78f36 829 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 830 reply->seq = strtol(p, NULL, 10);
f7d78f36 831 } else if (av_stristart(p, "Range:", &p)) {
31693e00 832 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 833 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 834 p += strspn(p, SPACE_CHARS);
30aa6aed 835 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 836 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 837 p += strspn(p, SPACE_CHARS);
7a86bafa 838 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
839 } else if (av_stristart(p, "Notice:", &p) ||
840 av_stristart(p, "X-Notice:", &p)) {
841 reply->notice = strtol(p, NULL, 10);
d243ba30 842 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 843 p += strspn(p, SPACE_CHARS);
d243ba30 844 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 845 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 846 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
847 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
848 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 849 p += strspn(p, SPACE_CHARS);
acc9ed14 850 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 851 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 852 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
853 if (method && !strcmp(method, "DESCRIBE"))
854 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
855 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
856 p += strspn(p, SPACE_CHARS);
857 if (method && !strcmp(method, "PLAY"))
858 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
859 } else if (av_stristart(p, "Public:", &p) && rt) {
860 if (strstr(p, "GET_PARAMETER") &&
861 method && !strcmp(method, "OPTIONS"))
862 rt->get_parameter_supported = 1;
30eae325
MS
863 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
864 p += strspn(p, SPACE_CHARS);
865 rt->accept_dynamic_rate = atoi(p);
1617ad97
FB
866 }
867}
868
b7b8fc34 869/* skip a RTP/TCP interleaved packet */
ec55edba 870void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
871{
872 RTSPState *rt = s->priv_data;
873 int ret, len, len1;
874 uint8_t buf[1024];
875
dce37564 876 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
877 if (ret != 3)
878 return;
80fb8234 879 len = AV_RB16(buf + 1);
67c9cd69 880
dfd2a005 881 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 882
b7b8fc34
FB
883 /* skip payload */
884 while (len > 0) {
885 len1 = len;
886 if (len1 > sizeof(buf))
887 len1 = sizeof(buf);
dce37564 888 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
889 if (ret != len1)
890 return;
891 len -= len1;
892 }
893}
1617ad97 894
3307e6ea 895int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 896 unsigned char **content_ptr,
3df54c6b 897 int return_on_interleaved_data, const char *method)
1617ad97
FB
898{
899 RTSPState *rt = s->priv_data;
900 char buf[4096], buf1[1024], *q;
901 unsigned char ch;
902 const char *p;
7e726132 903 int ret, content_length, line_count = 0;
1617ad97
FB
904 unsigned char *content = NULL;
905
d541a7d2 906 memset(reply, 0, sizeof(*reply));
1617ad97 907
1617ad97 908 /* parse reply (XXX: use buffers) */
1617ad97 909 rt->last_reply[0] = '\0';
c8965800 910 for (;;) {
1617ad97 911 q = buf;
c8965800 912 for (;;) {
dce37564 913 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 914 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 915 if (ret != 1)
2401660d 916 return AVERROR_EOF;
1617ad97
FB
917 if (ch == '\n')
918 break;
b7b8fc34
FB
919 if (ch == '$') {
920 /* XXX: only parse it if first char on line ? */
7e726132
RB
921 if (return_on_interleaved_data) {
922 return 1;
923 } else
ec55edba 924 ff_rtsp_skip_packet(s);
b7b8fc34 925 } else if (ch != '\r') {
1617ad97
FB
926 if ((q - buf) < sizeof(buf) - 1)
927 *q++ = ch;
928 }
929 }
930 *q = '\0';
67c9cd69 931
dfd2a005 932 av_dlog(s, "line='%s'\n", buf);
67c9cd69 933
1617ad97
FB
934 /* test if last line */
935 if (buf[0] == '\0')
936 break;
937 p = buf;
938 if (line_count == 0) {
939 /* get reply code */
940 get_word(buf1, sizeof(buf1), &p);
941 get_word(buf1, sizeof(buf1), &p);
942 reply->status_code = atoi(buf1);
d93fdcbf 943 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 944 } else {
77223c53 945 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
946 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
947 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
948 }
949 line_count++;
950 }
115329f1 951
1617ad97 952 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 953 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 954
1617ad97
FB
955 content_length = reply->content_length;
956 if (content_length > 0) {
957 /* leave some room for a trailing '\0' (useful for simple parsing) */
958 content = av_malloc(content_length + 1);
dce37564 959 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
960 content[content_length] = '\0';
961 }
962 if (content_ptr)
963 *content_ptr = content;
e2e2e7dd
AB
964 else
965 av_free(content);
7e726132 966
7ed8211b
LB
967 if (rt->seq != reply->seq) {
968 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
969 rt->seq, reply->seq);
970 }
971
fccb1770
RB
972 /* EOS */
973 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
974 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 975 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 976 rt->state = RTSP_STATE_IDLE;
c8965800 977 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 978 return AVERROR(EIO); /* data or server error */
c8965800 979 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
980 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
981 return AVERROR(EPERM);
982
7e726132 983 return 0;
1617ad97
FB
984}
985
57c4d01e
DEP
986/**
987 * Send a command to the RTSP server without waiting for the reply.
988 *
989 * @param s RTSP (de)muxer context
990 * @param method the method for the request
991 * @param url the target url for the request
992 * @param headers extra header lines to include in the request
993 * @param send_content if non-null, the data to send as request body content
994 * @param send_content_length the length of the send_content data, or 0 if
995 * send_content is null
996 *
997 * @return zero if success, nonzero otherwise
998 */
999static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1000 const char *method, const char *url,
1001 const char *headers,
1002 const unsigned char *send_content,
1003 int send_content_length)
29b9f58b
RB
1004{
1005 RTSPState *rt = s->priv_data;
f5d33f52
JA
1006 char buf[4096], *out_buf;
1007 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1008
f5d33f52
JA
1009 /* Add in RTSP headers */
1010 out_buf = buf;
29b9f58b 1011 rt->seq++;
b17d11c6
MS
1012 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1013 if (headers)
1014 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1015 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1016 if (rt->session_id[0] != '\0' && (!headers ||
1017 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1018 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1019 }
aa8bf2fb
MS
1020 if (rt->auth[0]) {
1021 char *str = ff_http_auth_create_response(&rt->auth_state,
1022 rt->auth, url, method);
1023 if (str)
1024 av_strlcat(buf, str, sizeof(buf));
1025 av_free(str);
1026 }
dfd017bf
MS
1027 if (send_content_length > 0 && send_content)
1028 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1029 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1030
f5d33f52
JA
1031 /* base64 encode rtsp if tunneling */
1032 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1033 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1034 out_buf = base64buf;
1035 }
1036
dfd2a005 1037 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1038
925e908b 1039 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1040 if (send_content_length > 0 && send_content) {
1041 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1042 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1043 "with content data not supported\n");
1044 return AVERROR_PATCHWELCOME;
1045 }
925e908b 1046 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1047 }
30e79845 1048 rt->last_cmd_time = av_gettime();
d0382374
JA
1049
1050 return 0;
30e79845
RB
1051}
1052
d0382374 1053int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1054 const char *url, const char *headers)
dfd017bf 1055{
d0382374 1056 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1057}
1058
d0382374 1059int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1060 const char *headers, RTSPMessageHeader *reply,
1061 unsigned char **content_ptr)
30e79845 1062{
d0382374 1063 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1064 content_ptr, NULL, 0);
29b9f58b
RB
1065}
1066
d0382374 1067int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1068 const char *method, const char *url,
1069 const char *header,
1070 RTSPMessageHeader *reply,
1071 unsigned char **content_ptr,
1072 const unsigned char *send_content,
1073 int send_content_length)
dfd017bf 1074{
30af0779
MS
1075 RTSPState *rt = s->priv_data;
1076 HTTPAuthType cur_auth_type;
d0382374 1077 int ret;
30af0779
MS
1078
1079retry:
1080 cur_auth_type = rt->auth_state.auth_type;
d0382374 1081 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1082 send_content,
1083 send_content_length)))
d0382374 1084 return ret;
dfd017bf 1085
3df54c6b 1086 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1087 return ret;
30af0779
MS
1088
1089 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1090 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1091 goto retry;
d0382374 1092
bf55cf19 1093 if (reply->status_code > 400){
d93fdcbf 1094 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1095 method,
d93fdcbf
LB
1096 reply->status_code,
1097 reply->reason);
bf55cf19
LB
1098 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1099 }
1100
d0382374 1101 return 0;
dfd017bf
MS
1102}
1103
fef5649a 1104int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1105 int lower_transport, const char *real_challenge)
1617ad97
FB
1106{
1107 RTSPState *rt = s->priv_data;
4be386b3 1108 int rtx = 0, j, i, err, interleave = 0;
1617ad97 1109 RTSPStream *rtsp_st;
a9e534d5 1110 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1111 char cmd[2048];
e9dea59f
RB
1112 const char *trans_pref;
1113
119b4668 1114 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1115 trans_pref = "x-pn-tng";
1116 else
1117 trans_pref = "RTP/AVP";
115329f1 1118
30e79845
RB
1119 /* default timeout: 1 minute */
1120 rt->timeout = 60;
1121
1617ad97
FB
1122 /* for each stream, make the setup request */
1123 /* XXX: we assume the same server is used for the control of each
c8965800 1124 * RTSP stream */
d1ccf0e0 1125
dbb06b8c 1126 for (j = rt->rtp_port_min, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1127 char transport[2048];
1128
f75e3da5 1129 /*
f830c9a4
RB
1130 * WMS serves all UDP data over a single connection, the RTX, which
1131 * isn't necessarily the first in the SDP but has to be the first
1132 * to be set up, else the second/third SETUP will fail with a 461.
1133 */
1134 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1135 rt->server_type == RTSP_SERVER_WMS) {
1136 if (i == 0) {
1137 /* rtx first */
1138 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1139 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1140 if (len >= 4 &&
c8965800
RB
1141 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1142 "/rtx"))
f830c9a4
RB
1143 break;
1144 }
1145 if (rtx == rt->nb_rtsp_streams)
1146 return -1; /* no RTX found */
1147 rtsp_st = rt->rtsp_streams[rtx];
1148 } else
1149 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1150 } else
2fea9650 1151 rtsp_st = rt->rtsp_streams[i];
1617ad97 1152
1617ad97 1153 /* RTP/UDP */
90abbdba 1154 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1155 char buf[256];
85fb7b34 1156
f830c9a4
RB
1157 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1158 port = reply->transports[0].client_port_min;
1159 goto have_port;
1160 }
1161
85fb7b34 1162 /* first try in specified port range */
dbb06b8c 1163 while (j <= rt->rtp_port_max) {
bc495bad
DV
1164 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1165 "?localport=%d", j);
1166 /* we will use two ports per rtp stream (rtp and rtcp) */
1167 j += 2;
1168 if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1169 &s->interrupt_callback, NULL))
1170 goto rtp_opened;
1617ad97 1171 }
85fb7b34 1172
a3b058b7
MS
1173 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1174 err = AVERROR(EIO);
1175 goto fail;
85fb7b34
FB
1176
1177 rtp_opened:
bfc6db44 1178 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1179 have_port:
0ad306bc 1180 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1181 "%s/UDP;", trans_pref);
1182 if (rt->server_type != RTSP_SERVER_REAL)
1183 av_strlcat(transport, "unicast;", sizeof(transport));
1184 av_strlcatf(transport, sizeof(transport),
1185 "client_port=%d", port);
f830c9a4
RB
1186 if (rt->transport == RTSP_TRANSPORT_RTP &&
1187 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1188 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1189 }
1190
1191 /* RTP/TCP */
90abbdba 1192 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1193 /* For WMS streams, the application streams are only used for
090438cc
RB
1194 * UDP. When trying to set it up for TCP streams, the server
1195 * will return an error. Therefore, we skip those streams. */
1196 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1197 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1198 AVMEDIA_TYPE_DATA)
090438cc 1199 continue;
0ad306bc 1200 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1201 "%s/TCP;", trans_pref);
895678f8 1202 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1203 av_strlcat(transport, "unicast;", sizeof(transport));
1204 av_strlcatf(transport, sizeof(transport),
1205 "interleaved=%d-%d",
1206 interleave, interleave + 1);
1207 interleave += 2;
1617ad97
FB
1208 }
1209
90abbdba 1210 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1211 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1212 "%s/UDP;multicast", trans_pref);
1617ad97 1213 }
69adcc4f
MS
1214 if (s->oformat) {
1215 av_strlcat(transport, ";mode=receive", sizeof(transport));
1216 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1217 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1218 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1219 snprintf(cmd, sizeof(cmd),
b6892136 1220 "Transport: %s\r\n",
b17d11c6 1221 transport);
76b0d03d
MS
1222 if (rt->accept_dynamic_rate)
1223 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1224 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1225 char real_res[41], real_csum[9];
1226 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1227 real_challenge);
1228 av_strlcatf(cmd, sizeof(cmd),
1229 "If-Match: %s\r\n"
1230 "RealChallenge2: %s, sd=%s\r\n",
1231 rt->session_id, real_res, real_csum);
1232 }
b17d11c6 1233 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1234 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1235 err = 1;
1236 goto fail;
7e6ca34f
RB
1237 } else if (reply->status_code != RTSP_STATUS_OK ||
1238 reply->nb_transports != 1) {
1617ad97
FB
1239 err = AVERROR_INVALIDDATA;
1240 goto fail;
1241 }
1242
1243 /* XXX: same protocol for all streams is required */
1244 if (i > 0) {
119b4668
RB
1245 if (reply->transports[0].lower_transport != rt->lower_transport ||
1246 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1247 err = AVERROR_INVALIDDATA;
1248 goto fail;
1249 }
1250 } else {
90abbdba 1251 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1252 rt->transport = reply->transports[0].transport;
1617ad97
FB
1253 }
1254
8c579c1c
MS
1255 /* Fail if the server responded with another lower transport mode
1256 * than what we requested. */
1257 if (reply->transports[0].lower_transport != lower_transport) {
1258 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1259 err = AVERROR_INVALIDDATA;
1260 goto fail;
1617ad97
FB
1261 }
1262
90abbdba
RB
1263 switch(reply->transports[0].lower_transport) {
1264 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1265 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1266 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1267 break;
115329f1 1268
c8965800 1269 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1270 char url[1024], options[30] = "";
c8965800 1271
9867aea5 1272 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1273 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1274 /* Use source address if specified */
1275 if (reply->transports[0].source[0]) {
1276 ff_url_join(url, sizeof(url), "rtp", NULL,
1277 reply->transports[0].source,
d8407339 1278 reply->transports[0].server_port_min, "%s", options);
619298a8 1279 } else {
7bac991f 1280 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1281 reply->transports[0].server_port_min, "%s", options);
619298a8 1282 }
c8965800 1283 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1284 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1285 err = AVERROR_INVALIDDATA;
1286 goto fail;
1617ad97 1287 }
9c8fa20d
MS
1288 /* Try to initialize the connection state in a
1289 * potential NAT router by sending dummy packets.
1290 * RTP/RTCP dummy packets are used for RDT, too.
1291 */
44b70ce5
MS
1292 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1293 CONFIG_RTPDEC)
bfc6db44 1294 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1295 break;
c8965800
RB
1296 }
1297 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1298 char url[1024], namebuf[50];
1299 struct sockaddr_storage addr;
c8965800
RB
1300 int port, ttl;
1301
7934b15d
MS
1302 if (reply->transports[0].destination.ss_family) {
1303 addr = reply->transports[0].destination;
c8965800
RB
1304 port = reply->transports[0].port_min;
1305 ttl = reply->transports[0].ttl;
1306 } else {
7934b15d 1307 addr = rtsp_st->sdp_ip;
c8965800
RB
1308 port = rtsp_st->sdp_port;
1309 ttl = rtsp_st->sdp_ttl;
1310 }
7934b15d
MS
1311 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1312 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1313 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1314 port, "?ttl=%d", ttl);
6f1b7b39 1315 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1316 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1317 err = AVERROR_INVALIDDATA;
1318 goto fail;
1617ad97
FB
1319 }
1320 break;
1321 }
c8965800 1322 }
d1ccf0e0 1323
ee0cb67f 1324 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1325 goto fail;
1617ad97
FB
1326 }
1327
30e79845
RB
1328 if (reply->timeout > 0)
1329 rt->timeout = reply->timeout;
1330
2e889ae4 1331 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1332 rt->need_subscription = 1;
1333
53620bba
RB
1334 return 0;
1335
1336fail:
aeb2de1c 1337 ff_rtsp_undo_setup(s);
53620bba
RB
1338 return err;
1339}
1340
b8c2c41d
JA
1341void ff_rtsp_close_connections(AVFormatContext *s)
1342{
1343 RTSPState *rt = s->priv_data;
e52a9145
AK
1344 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1345 ffurl_close(rt->rtsp_hd);
6217b645 1346 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1347}
1348
3307e6ea 1349int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1350{
1351 RTSPState *rt = s->priv_data;
921da217
LB
1352 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1353 char *option_list, *option, *filename;
03f8fc08 1354 int port, err, tcp_fd;
354b7573 1355 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1356 int lower_transport_mask = 0;
2762a7a2 1357 char real_challenge[64] = "";
03f8fc08
MS
1358 struct sockaddr_storage peer;
1359 socklen_t peer_len = sizeof(peer);
57b5555c 1360
dbb06b8c
MS
1361 if (rt->rtp_port_max < rt->rtp_port_min) {
1362 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1363 "than min port %d\n", rt->rtp_port_max,
1364 rt->rtp_port_min);
1365 return AVERROR(EINVAL);
1366 }
1367
57b5555c
MS
1368 if (!ff_network_init())
1369 return AVERROR(EIO);
eca4850c 1370
f5d33f52 1371 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1372 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1373 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1374 rt->control_transport = RTSP_MODE_TUNNEL;
1375 }
1376 /* Only pass through valid flags from here */
1377 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1378
1379redirect:
1380 lower_transport_mask = rt->lower_transport_mask;
53620bba 1381 /* extract hostname and port */
f3bfe388 1382 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1383 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1384 if (*auth) {
aa8bf2fb 1385 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1386 }
53620bba
RB
1387 if (port < 0)
1388 port = RTSP_DEFAULT_PORT;
1389
eca4850c 1390#if FF_API_RTSP_URL_OPTIONS
53620bba 1391 /* search for options */
602eb779 1392 option_list = strrchr(path, '?');
53620bba 1393 if (option_list) {
2a21adf9
MS
1394 /* Strip out the RTSP specific options, write out the rest of
1395 * the options back into the same string. */
1396 filename = option_list;
c8965800 1397 while (option_list) {
eca4850c 1398 int handled = 1;
53620bba 1399 /* move the option pointer */
921da217 1400 option = ++option_list;
53620bba
RB
1401 option_list = strchr(option_list, '&');
1402 if (option_list)
921da217
LB
1403 *option_list = 0;
1404
53620bba 1405 /* handle the options */
c8965800 1406 if (!strcmp(option, "udp")) {
7a033e08 1407 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1408 } else if (!strcmp(option, "multicast")) {
7a033e08 1409 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1410 } else if (!strcmp(option, "tcp")) {
7a033e08 1411 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1412 } else if(!strcmp(option, "http")) {
1413 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1414 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7 1415 } else if (!strcmp(option, "filter_src")) {
9867aea5 1416 rt->rtsp_flags |= RTSP_FLAG_FILTER_SRC;
c8965800 1417 } else {
2a21adf9
MS
1418 /* Write options back into the buffer, using memmove instead
1419 * of strcpy since the strings may overlap. */
1420 int len = strlen(option);
1421 memmove(++filename, option, len);
1422 filename += len;
921da217 1423 if (option_list) *filename = '&';
eca4850c 1424 handled = 0;
921da217 1425 }
eca4850c
MS
1426 if (handled)
1427 av_log(s, AV_LOG_WARNING, "Options passed via URL are "
1428 "deprecated, use -rtsp_transport "
1429 "and -rtsp_flags instead.\n");
53620bba 1430 }
921da217 1431 *filename = 0;
53620bba 1432 }
eca4850c 1433#endif
53620bba 1434
90abbdba 1435 if (!lower_transport_mask)
2a1d51c5 1436 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1437
3e24c770 1438 if (s->oformat) {
b7dc88fc
MS
1439 /* Only UDP or TCP - UDP multicast isn't supported. */
1440 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1441 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1442 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1443 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1444 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1445 err = AVERROR(EINVAL);
1446 goto fail;
1447 }
1448 }
1449
4bc5cc23
MS
1450 /* Construct the URI used in request; this is similar to s->filename,
1451 * but with authentication credentials removed and RTSP specific options
1452 * stripped out. */
1453 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1454 host, port, "%s", path);
1455
f5d33f52
JA
1456 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1457 /* set up initial handshake for tunneling */
1458 char httpname[1024];
1459 char sessioncookie[17];
1460 char headers[1024];
1461
10ed37b5 1462 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1463 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1464 av_get_random_seed(), av_get_random_seed());
1465
1466 /* GET requests */
6f1b7b39
MS
1467 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1468 &s->interrupt_callback) < 0) {
f5d33f52
JA
1469 err = AVERROR(EIO);
1470 goto fail;
1471 }
1472
1473 /* generate GET headers */
1474 snprintf(headers, sizeof(headers),
1475 "x-sessioncookie: %s\r\n"
1476 "Accept: application/x-rtsp-tunnelled\r\n"
1477 "Pragma: no-cache\r\n"
1478 "Cache-Control: no-cache\r\n",
1479 sessioncookie);
196bf28c 1480 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1481
1482 /* complete the connection */
ddffc2fd 1483 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1484 err = AVERROR(EIO);
1485 goto fail;
1486 }
1487
1488 /* POST requests */
6f1b7b39
MS
1489 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1490 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1491 err = AVERROR(EIO);
1492 goto fail;
1493 }
1494
1495 /* generate POST headers */
1496 snprintf(headers, sizeof(headers),
1497 "x-sessioncookie: %s\r\n"
1498 "Content-Type: application/x-rtsp-tunnelled\r\n"
1499 "Pragma: no-cache\r\n"
1500 "Cache-Control: no-cache\r\n"
1501 "Content-Length: 32767\r\n"
1502 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1503 sessioncookie);
196bf28c 1504 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1505 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1506
a8ead332
MS
1507 /* Initialize the authentication state for the POST session. The HTTP
1508 * protocol implementation doesn't properly handle multi-pass
1509 * authentication for POST requests, since it would require one of
1510 * the following:
1511 * - implementing Expect: 100-continue, which many HTTP servers
1512 * don't support anyway, even less the RTSP servers that do HTTP
1513 * tunneling
1514 * - sending the whole POST data until getting a 401 reply specifying
1515 * what authentication method to use, then resending all that data
1516 * - waiting for potential 401 replies directly after sending the
1517 * POST header (waiting for some unspecified time)
1518 * Therefore, we copy the full auth state, which works for both basic
1519 * and digest. (For digest, we would have to synchronize the nonce
1520 * count variable between the two sessions, if we'd do more requests
1521 * with the original session, though.)
1522 */
1523 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1524
9290f15d 1525 /* complete the connection */
ddffc2fd 1526 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1527 err = AVERROR(EIO);
1528 goto fail;
1529 }
f5d33f52 1530 } else {
48e77473 1531 /* open the tcp connection */
41874d0a 1532 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1533 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1534 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1535 err = AVERROR(EIO);
1536 goto fail;
1537 }
00e4a1f4 1538 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1539 }
53620bba
RB
1540 rt->seq = 0;
1541
1869ea03 1542 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1543 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1544 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1545 NULL, 0, NI_NUMERICHOST);
1546 }
1547
c8965800
RB
1548 /* request options supported by the server; this also detects server
1549 * type */
1cf151e9 1550 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1551 cmd[0] = 0;
2e889ae4 1552 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1553 av_strlcat(cmd,
f75e3da5 1554 /*
1cf151e9
RB
1555 * The following entries are required for proper
1556 * streaming from a Realmedia server. They are
1557 * interdependent in some way although we currently
1558 * don't quite understand how. Values were copied
1559 * from mplayer SVN r23589.
f75e3da5
DB
1560 * ClientChallenge is a 16-byte ID in hex
1561 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1562 */
1563 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1564 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1565 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1566 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1567 sizeof(cmd));
b17d11c6 1568 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1569 if (reply->status_code != RTSP_STATUS_OK) {
1570 err = AVERROR_INVALIDDATA;
1571 goto fail;
1572 }
1573
1574 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1575 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1576 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1577 continue;
bb3244de 1578 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1579 rt->server_type = RTSP_SERVER_WMS;
c8965800 1580 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1581 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1582 break;
1583 }
1584
44b70ce5 1585 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1586 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1587 else if (CONFIG_RTSP_MUXER)
c2688f3a 1588 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1589 if (err)
53620bba 1590 goto fail;
53620bba 1591
8a8754d8 1592 do {
c8965800
RB
1593 int lower_transport = ff_log2_tab[lower_transport_mask &
1594 ~(lower_transport_mask - 1)];
8a8754d8 1595
fef5649a 1596 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1597 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1598 real_challenge : NULL);
8a8754d8 1599 if (err < 0)
7e6ca34f 1600 goto fail;
90abbdba
RB
1601 lower_transport_mask &= ~(1 << lower_transport);
1602 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1603 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1604 goto fail;
1605 }
1606 } while (err);
53620bba 1607
2762a7a2
MS
1608 rt->lower_transport_mask = lower_transport_mask;
1609 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1610 rt->state = RTSP_STATE_IDLE;
c8965800 1611 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1612 return 0;
1613 fail:
3307e6ea 1614 ff_rtsp_close_streams(s);
b8c2c41d 1615 ff_rtsp_close_connections(s);
35cfd646 1616 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1617 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1618 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1619 reply->status_code,
1620 s->filename);
1621 goto redirect;
1622 }
57b5555c 1623 ff_network_close();
1617ad97
FB
1624 return err;
1625}
2e802e38 1626#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1627
44b70ce5 1628#if CONFIG_RTPDEC
0e59034e 1629static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1630 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1631{
1632 RTSPState *rt = s->priv_data;
1633 RTSPStream *rtsp_st;
a8475bbd
LB
1634 int n, i, ret, tcp_fd, timeout_cnt = 0;
1635 int max_p = 0;
1636 struct pollfd *p = rt->p;
0e59034e 1637
c8965800 1638 for (;;) {
9957cdbf 1639 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1640 return AVERROR_EXIT;
321259c1
MS
1641 if (wait_end && wait_end - av_gettime() < 0)
1642 return AVERROR(EAGAIN);
a8475bbd 1643 max_p = 0;
0e59034e 1644 if (rt->rtsp_hd) {
1869ea03 1645 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1646 p[max_p].fd = tcp_fd;
1647 p[max_p++].events = POLLIN;
0e59034e 1648 } else {
0e59034e
RB
1649 tcp_fd = -1;
1650 }
c8965800 1651 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1652 rtsp_st = rt->rtsp_streams[i];
1653 if (rtsp_st->rtp_handle) {
1869ea03 1654 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1655 p[max_p++].events = POLLIN;
bfc6db44 1656 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1657 p[max_p++].events = POLLIN;
0e59034e
RB
1658 }
1659 }
a8475bbd 1660 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1661 if (n > 0) {
a8475bbd 1662 int j = 1 - (tcp_fd == -1);
9cba6f5f 1663 timeout_cnt = 0;
c8965800 1664 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1665 rtsp_st = rt->rtsp_streams[i];
1666 if (rtsp_st->rtp_handle) {
a8475bbd 1667 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1668 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1669 if (ret > 0) {
1670 *prtsp_st = rtsp_st;
1671 return ret;
1672 }
1673 }
a8475bbd 1674 j+=2;
0e59034e
RB
1675 }
1676 }
5fe8021a 1677#if CONFIG_RTSP_DEMUXER
a8475bbd 1678 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1679 RTSPMessageHeader reply;
1680
3df54c6b 1681 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1682 if (ret < 0)
1683 return ret;
0e59034e 1684 /* XXX: parse message */
c02fd3d2 1685 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1686 return 0;
1687 }
5fe8021a 1688#endif
9cba6f5f 1689 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1690 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1691 } else if (n < 0 && errno != EINTR)
1692 return AVERROR(errno);
0e59034e
RB
1693 }
1694}
1695
0526c6f7 1696int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1697{
1698 RTSPState *rt = s->priv_data;
1699 int ret, len;
321259c1
MS
1700 RTSPStream *rtsp_st, *first_queue_st = NULL;
1701 int64_t wait_end = 0;
0e59034e 1702
b20359f5
JA
1703 if (rt->nb_byes == rt->nb_rtsp_streams)
1704 return AVERROR_EOF;
1705
0e59034e
RB
1706 /* get next frames from the same RTP packet */
1707 if (rt->cur_transport_priv) {
c8965800 1708 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1709 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1710 } else
bfc6db44 1711 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1712 if (ret == 0) {
1713 rt->cur_transport_priv = NULL;
1714 return 0;
1715 } else if (ret == 1) {
1716 return 0;
c8965800 1717 } else
0e59034e 1718 rt->cur_transport_priv = NULL;
0e59034e
RB
1719 }
1720
321259c1
MS
1721 if (rt->transport == RTSP_TRANSPORT_RTP) {
1722 int i;
1723 int64_t first_queue_time = 0;
1724 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1725 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1726 int64_t queue_time;
1727 if (!rtpctx)
1728 continue;
1729 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1730 if (queue_time && (queue_time - first_queue_time < 0 ||
1731 !first_queue_time)) {
1732 first_queue_time = queue_time;
1733 first_queue_st = rt->rtsp_streams[i];
1734 }
1735 }
1736 if (first_queue_time)
1737 wait_end = first_queue_time + s->max_delay;
1738 }
1739
0e59034e
RB
1740 /* read next RTP packet */
1741 redo:
96a7c975
MS
1742 if (!rt->recvbuf) {
1743 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1744 if (!rt->recvbuf)
1745 return AVERROR(ENOMEM);
1746 }
1747
0e59034e
RB
1748 switch(rt->lower_transport) {
1749 default:
5fe8021a 1750#if CONFIG_RTSP_DEMUXER
0e59034e 1751 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1752 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1753 break;
5fe8021a 1754#endif
0e59034e
RB
1755 case RTSP_LOWER_TRANSPORT_UDP:
1756 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1757 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1758 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1759 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1760 break;
1761 }
321259c1
MS
1762 if (len == AVERROR(EAGAIN) && first_queue_st &&
1763 rt->transport == RTSP_TRANSPORT_RTP) {
1764 rtsp_st = first_queue_st;
bfc6db44 1765 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1766 goto end;
1767 }
0e59034e
RB
1768 if (len < 0)
1769 return len;
1770 if (len == 0)
1771 return AVERROR_EOF;
c8965800 1772 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1773 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1774 } else {
bfc6db44 1775 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1776 if (ret < 0) {
1777 /* Either bad packet, or a RTCP packet. Check if the
1778 * first_rtcp_ntp_time field was initialized. */
1779 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1780 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1781 /* first_rtcp_ntp_time has been initialized for this stream,
1782 * copy the same value to all other uninitialized streams,
1783 * in order to map their timestamp origin to the same ntp time
1784 * as this one. */
1785 int i;
3a1cdcc7
MS
1786 AVStream *st = NULL;
1787 if (rtsp_st->stream_index >= 0)
1788 st = s->streams[rtsp_st->stream_index];
2cab6b48 1789 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1790 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1791 AVStream *st2 = NULL;
1792 if (rt->rtsp_streams[i]->stream_index >= 0)
1793 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1794 if (rtpctx2 && st && st2 &&
1795 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1796 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1797 rtpctx2->rtcp_ts_offset = av_rescale_q(
1798 rtpctx->rtcp_ts_offset, st->time_base,
1799 st2->time_base);
1800 }
2cab6b48
MS
1801 }
1802 }
b20359f5
JA
1803 if (ret == -RTCP_BYE) {
1804 rt->nb_byes++;
1805
1806 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1807 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1808
1809 if (rt->nb_byes == rt->nb_rtsp_streams)
1810 return AVERROR_EOF;
1811 }
2cab6b48
MS
1812 }
1813 }
321259c1 1814end:
0e59034e
RB
1815 if (ret < 0)
1816 goto redo;
c8965800 1817 if (ret == 1)
0e59034e
RB
1818 /* more packets may follow, so we save the RTP context */
1819 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1820
1821 return ret;
1822}
44b70ce5 1823#endif /* CONFIG_RTPDEC */
0e59034e 1824
44b70ce5 1825#if CONFIG_SDP_DEMUXER
cb1fdc61 1826static int sdp_probe(AVProbeData *p1)
93ced3e8 1827{
0e1ceacd 1828 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1829
3fbd12d1 1830 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1831 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1832 if (p + sizeof("c=IN IP") - 1 < p_end &&
1833 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1834 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1835
c8965800 1836 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1837 if (++p >= p_end)
cb1fdc61 1838 break;
cb1fdc61
FB
1839 if (*p == '\r')
1840 p++;
1841 }
93ced3e8
FB
1842 return 0;
1843}
1844
c8965800 1845static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1846{
8b1ab7bf 1847 RTSPState *rt = s->priv_data;
93ced3e8
FB
1848 RTSPStream *rtsp_st;
1849 int size, i, err;
1850 char *content;
1851 char url[1024];
1852
57b5555c
MS
1853 if (!ff_network_init())
1854 return AVERROR(EIO);
1855
93ced3e8
FB
1856 /* read the whole sdp file */
1857 /* XXX: better loading */
1858 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1859 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1860 if (size <= 0) {
1861 av_free(content);
1862 return AVERROR_INVALIDDATA;
1863 }
1864 content[size] ='\0';
1865
f81c7ac7 1866 err = ff_sdp_parse(s, content);
93ced3e8 1867 av_free(content);
f81c7ac7 1868 if (err) goto fail;
93ced3e8
FB
1869
1870 /* open each RTP stream */
c8965800 1871 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1872 char namebuf[50];
8b1ab7bf 1873 rtsp_st = rt->rtsp_streams[i];
115329f1 1874
3fbd12d1
MS
1875 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1876 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1877 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1878 namebuf, rtsp_st->sdp_port,
51369f28
MS
1879 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1880 rtsp_st->sdp_ttl,
1881 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
6f1b7b39 1882 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1883 &s->interrupt_callback, NULL) < 0) {
93ced3e8
FB
1884 err = AVERROR_INVALIDDATA;
1885 goto fail;
1886 }
ee0cb67f 1887 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1888 goto fail;
93ced3e8
FB
1889 }
1890 return 0;
c8965800 1891fail:
3307e6ea 1892 ff_rtsp_close_streams(s);
57b5555c 1893 ff_network_close();
93ced3e8
FB
1894 return err;
1895}
1896
93ced3e8
FB
1897static int sdp_read_close(AVFormatContext *s)
1898{
3307e6ea 1899 ff_rtsp_close_streams(s);
57b5555c 1900 ff_network_close();
93ced3e8
FB
1901 return 0;
1902}
1903
51369f28
MS
1904static const AVClass sdp_demuxer_class = {
1905 .class_name = "SDP demuxer",
1906 .item_name = av_default_item_name,
1907 .option = sdp_options,
1908 .version = LIBAVUTIL_VERSION_INT,
1909};
1910
c6610a21 1911AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1912 .name = "sdp",
1913 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1914 .priv_data_size = sizeof(RTSPState),
1915 .read_probe = sdp_probe,
1916 .read_header = sdp_read_header,
1917 .read_packet = ff_rtsp_fetch_packet,
1918 .read_close = sdp_read_close,
51369f28 1919 .priv_class = &sdp_demuxer_class
93ced3e8 1920};
44b70ce5 1921#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1922
44b70ce5 1923#if CONFIG_RTP_DEMUXER
44594cc7
MS
1924static int rtp_probe(AVProbeData *p)
1925{
1926 if (av_strstart(p->filename, "rtp:", NULL))
1927 return AVPROBE_SCORE_MAX;
1928 return 0;
1929}
1930
1931static int rtp_read_header(AVFormatContext *s,
1932 AVFormatParameters *ap)
1933{
1934 uint8_t recvbuf[1500];
1935 char host[500], sdp[500];
1936 int ret, port;
1937 URLContext* in = NULL;
1938 int payload_type;
1939 AVCodecContext codec;
1940 struct sockaddr_storage addr;
ae628ec1 1941 AVIOContext pb;
44594cc7 1942 socklen_t addrlen = sizeof(addr);
30266038 1943 RTSPState *rt = s->priv_data;
44594cc7
MS
1944
1945 if (!ff_network_init())
1946 return AVERROR(EIO);
1947
6f1b7b39 1948 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 1949 &s->interrupt_callback, NULL);
44594cc7
MS
1950 if (ret)
1951 goto fail;
1952
1953 while (1) {
bc371aca 1954 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
1955 if (ret == AVERROR(EAGAIN))
1956 continue;
1957 if (ret < 0)
1958 goto fail;
1959 if (ret < 12) {
1960 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1961 continue;
1962 }
1963
1964 if ((recvbuf[0] & 0xc0) != 0x80) {
1965 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1966 "received\n");
1967 continue;
1968 }
1969
1970 payload_type = recvbuf[1] & 0x7f;
1971 break;
1972 }
1869ea03 1973 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 1974 ffurl_close(in);
44594cc7
MS
1975 in = NULL;
1976
1977 memset(&codec, 0, sizeof(codec));
1978 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1979 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1980 "without an SDP file describing it\n",
1981 payload_type);
1982 goto fail;
1983 }
1984 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1985 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1986 "properly you need an SDP file "
1987 "describing it\n");
1988 }
1989
1990 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1991 NULL, 0, s->filename);
1992
1993 snprintf(sdp, sizeof(sdp),
1994 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1995 addr.ss_family == AF_INET ? 4 : 6, host,
1996 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1997 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1998 port, payload_type);
1999 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2000
e731b8d8 2001 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2002 s->pb = &pb;
2003
2004 /* sdp_read_header initializes this again */
2005 ff_network_close();
2006
30266038
MS
2007 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2008
44594cc7
MS
2009 ret = sdp_read_header(s, ap);
2010 s->pb = NULL;
2011 return ret;
2012
2013fail:
2014 if (in)
e52a9145 2015 ffurl_close(in);
44594cc7
MS
2016 ff_network_close();
2017 return ret;
2018}
2019
51369f28
MS
2020static const AVClass rtp_demuxer_class = {
2021 .class_name = "RTP demuxer",
2022 .item_name = av_default_item_name,
2023 .option = rtp_options,
2024 .version = LIBAVUTIL_VERSION_INT,
2025};
2026
c6610a21 2027AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
2028 .name = "rtp",
2029 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
2030 .priv_data_size = sizeof(RTSPState),
2031 .read_probe = rtp_probe,
2032 .read_header = rtp_read_header,
2033 .read_packet = ff_rtsp_fetch_packet,
2034 .read_close = sdp_read_close,
44594cc7 2035 .flags = AVFMT_NOFILE,
51369f28 2036 .priv_class = &rtp_demuxer_class
44594cc7 2037};
44b70ce5 2038#endif /* CONFIG_RTP_DEMUXER */
44594cc7 2039