libavformat: Set the default for the max_delay option to -1
[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 },
c2ff63e3 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;
1a6b9a98 903 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
904 unsigned char *content = NULL;
905
1a6b9a98
TW
906start:
907 line_count = 0;
908 request = 0;
909 content = NULL;
d541a7d2 910 memset(reply, 0, sizeof(*reply));
1617ad97 911
1617ad97 912 /* parse reply (XXX: use buffers) */
1617ad97 913 rt->last_reply[0] = '\0';
c8965800 914 for (;;) {
1617ad97 915 q = buf;
c8965800 916 for (;;) {
dce37564 917 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 918 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 919 if (ret != 1)
2401660d 920 return AVERROR_EOF;
1617ad97
FB
921 if (ch == '\n')
922 break;
b7b8fc34
FB
923 if (ch == '$') {
924 /* XXX: only parse it if first char on line ? */
7e726132
RB
925 if (return_on_interleaved_data) {
926 return 1;
927 } else
ec55edba 928 ff_rtsp_skip_packet(s);
b7b8fc34 929 } else if (ch != '\r') {
1617ad97
FB
930 if ((q - buf) < sizeof(buf) - 1)
931 *q++ = ch;
932 }
933 }
934 *q = '\0';
67c9cd69 935
dfd2a005 936 av_dlog(s, "line='%s'\n", buf);
67c9cd69 937
1617ad97
FB
938 /* test if last line */
939 if (buf[0] == '\0')
940 break;
941 p = buf;
942 if (line_count == 0) {
943 /* get reply code */
944 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
945 if (!strncmp(buf1, "RTSP/", 5)) {
946 get_word(buf1, sizeof(buf1), &p);
947 reply->status_code = atoi(buf1);
948 av_strlcpy(reply->reason, p, sizeof(reply->reason));
949 } else {
950 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
951 get_word(buf1, sizeof(buf1), &p); // object
952 request = 1;
953 }
1617ad97 954 } else {
77223c53 955 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
956 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
957 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
958 }
959 line_count++;
960 }
115329f1 961
1a6b9a98 962 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 963 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 964
1617ad97
FB
965 content_length = reply->content_length;
966 if (content_length > 0) {
967 /* leave some room for a trailing '\0' (useful for simple parsing) */
968 content = av_malloc(content_length + 1);
dce37564 969 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
970 content[content_length] = '\0';
971 }
972 if (content_ptr)
973 *content_ptr = content;
e2e2e7dd
AB
974 else
975 av_free(content);
7e726132 976
1a6b9a98
TW
977 if (request) {
978 char buf[1024];
979 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
980 const char* ptr = buf;
981
982 if (!strcmp(reply->reason, "OPTIONS")) {
983 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
984 if (reply->seq)
985 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
986 if (reply->session_id[0])
987 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
988 reply->session_id);
989 } else {
990 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
991 }
992 av_strlcat(buf, "\r\n", sizeof(buf));
993
994 if (rt->control_transport == RTSP_MODE_TUNNEL) {
995 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
996 ptr = base64buf;
997 }
998 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
999
1000 rt->last_cmd_time = av_gettime();
1001 /* Even if the request from the server had data, it is not the data
1002 * that the caller wants or expects. The memory could also be leaked
1003 * if the actual following reply has content data. */
1004 if (content_ptr)
1005 av_freep(content_ptr);
1006 /* If method is set, this is called from ff_rtsp_send_cmd,
1007 * where a reply to exactly this request is awaited. For
705eeb5e 1008 * callers from within packet receiving, we just want to
1a6b9a98
TW
1009 * return to the caller and go back to receiving packets. */
1010 if (method)
1011 goto start;
1012 return 0;
1013 }
1014
7ed8211b
LB
1015 if (rt->seq != reply->seq) {
1016 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1017 rt->seq, reply->seq);
1018 }
1019
fccb1770
RB
1020 /* EOS */
1021 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1022 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1023 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1024 rt->state = RTSP_STATE_IDLE;
c8965800 1025 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1026 return AVERROR(EIO); /* data or server error */
c8965800 1027 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1028 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1029 return AVERROR(EPERM);
1030
7e726132 1031 return 0;
1617ad97
FB
1032}
1033
57c4d01e
DEP
1034/**
1035 * Send a command to the RTSP server without waiting for the reply.
1036 *
1037 * @param s RTSP (de)muxer context
1038 * @param method the method for the request
1039 * @param url the target url for the request
1040 * @param headers extra header lines to include in the request
1041 * @param send_content if non-null, the data to send as request body content
1042 * @param send_content_length the length of the send_content data, or 0 if
1043 * send_content is null
1044 *
1045 * @return zero if success, nonzero otherwise
1046 */
1047static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1048 const char *method, const char *url,
1049 const char *headers,
1050 const unsigned char *send_content,
1051 int send_content_length)
29b9f58b
RB
1052{
1053 RTSPState *rt = s->priv_data;
f5d33f52
JA
1054 char buf[4096], *out_buf;
1055 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1056
f5d33f52
JA
1057 /* Add in RTSP headers */
1058 out_buf = buf;
29b9f58b 1059 rt->seq++;
b17d11c6
MS
1060 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1061 if (headers)
1062 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1063 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1064 if (rt->session_id[0] != '\0' && (!headers ||
1065 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1066 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1067 }
aa8bf2fb
MS
1068 if (rt->auth[0]) {
1069 char *str = ff_http_auth_create_response(&rt->auth_state,
1070 rt->auth, url, method);
1071 if (str)
1072 av_strlcat(buf, str, sizeof(buf));
1073 av_free(str);
1074 }
dfd017bf
MS
1075 if (send_content_length > 0 && send_content)
1076 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1077 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1078
f5d33f52
JA
1079 /* base64 encode rtsp if tunneling */
1080 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1081 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1082 out_buf = base64buf;
1083 }
1084
dfd2a005 1085 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1086
925e908b 1087 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1088 if (send_content_length > 0 && send_content) {
1089 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1090 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1091 "with content data not supported\n");
1092 return AVERROR_PATCHWELCOME;
1093 }
925e908b 1094 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1095 }
30e79845 1096 rt->last_cmd_time = av_gettime();
d0382374
JA
1097
1098 return 0;
30e79845
RB
1099}
1100
d0382374 1101int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1102 const char *url, const char *headers)
dfd017bf 1103{
d0382374 1104 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1105}
1106
d0382374 1107int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1108 const char *headers, RTSPMessageHeader *reply,
1109 unsigned char **content_ptr)
30e79845 1110{
d0382374 1111 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1112 content_ptr, NULL, 0);
29b9f58b
RB
1113}
1114
d0382374 1115int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1116 const char *method, const char *url,
1117 const char *header,
1118 RTSPMessageHeader *reply,
1119 unsigned char **content_ptr,
1120 const unsigned char *send_content,
1121 int send_content_length)
dfd017bf 1122{
30af0779
MS
1123 RTSPState *rt = s->priv_data;
1124 HTTPAuthType cur_auth_type;
2f96cc1f 1125 int ret, attempts = 0;
30af0779
MS
1126
1127retry:
1128 cur_auth_type = rt->auth_state.auth_type;
d0382374 1129 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1130 send_content,
1131 send_content_length)))
d0382374 1132 return ret;
dfd017bf 1133
3df54c6b 1134 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1135 return ret;
2f96cc1f 1136 attempts++;
30af0779 1137
2f96cc1f
MS
1138 if (reply->status_code == 401 &&
1139 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1140 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1141 goto retry;
d0382374 1142
bf55cf19 1143 if (reply->status_code > 400){
d93fdcbf 1144 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1145 method,
d93fdcbf
LB
1146 reply->status_code,
1147 reply->reason);
bf55cf19
LB
1148 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1149 }
1150
d0382374 1151 return 0;
dfd017bf
MS
1152}
1153
fef5649a 1154int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1155 int lower_transport, const char *real_challenge)
1617ad97
FB
1156{
1157 RTSPState *rt = s->priv_data;
58f09785 1158 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1159 RTSPStream *rtsp_st;
a9e534d5 1160 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1161 char cmd[2048];
e9dea59f
RB
1162 const char *trans_pref;
1163
119b4668 1164 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1165 trans_pref = "x-pn-tng";
1166 else
1167 trans_pref = "RTP/AVP";
115329f1 1168
30e79845
RB
1169 /* default timeout: 1 minute */
1170 rt->timeout = 60;
1171
1617ad97
FB
1172 /* for each stream, make the setup request */
1173 /* XXX: we assume the same server is used for the control of each
c8965800 1174 * RTSP stream */
d1ccf0e0 1175
58f09785
DV
1176 /* Choose a random starting offset within the first half of the
1177 * port range, to allow for a number of ports to try even if the offset
1178 * happens to be at the end of the random range. */
1179 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1180 /* even random offset */
1181 port_off -= port_off & 0x01;
1182
1183 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1184 char transport[2048];
1185
f75e3da5 1186 /*
f830c9a4
RB
1187 * WMS serves all UDP data over a single connection, the RTX, which
1188 * isn't necessarily the first in the SDP but has to be the first
1189 * to be set up, else the second/third SETUP will fail with a 461.
1190 */
1191 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1192 rt->server_type == RTSP_SERVER_WMS) {
1193 if (i == 0) {
1194 /* rtx first */
1195 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1196 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1197 if (len >= 4 &&
c8965800
RB
1198 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1199 "/rtx"))
f830c9a4
RB
1200 break;
1201 }
1202 if (rtx == rt->nb_rtsp_streams)
1203 return -1; /* no RTX found */
1204 rtsp_st = rt->rtsp_streams[rtx];
1205 } else
1206 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1207 } else
2fea9650 1208 rtsp_st = rt->rtsp_streams[i];
1617ad97 1209
1617ad97 1210 /* RTP/UDP */
90abbdba 1211 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1212 char buf[256];
85fb7b34 1213
f830c9a4
RB
1214 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1215 port = reply->transports[0].client_port_min;
1216 goto have_port;
1217 }
1218
85fb7b34 1219 /* first try in specified port range */
dbb06b8c 1220 while (j <= rt->rtp_port_max) {
bc495bad
DV
1221 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1222 "?localport=%d", j);
1223 /* we will use two ports per rtp stream (rtp and rtcp) */
1224 j += 2;
1225 if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1226 &s->interrupt_callback, NULL))
1227 goto rtp_opened;
1617ad97 1228 }
85fb7b34 1229
a3b058b7
MS
1230 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1231 err = AVERROR(EIO);
1232 goto fail;
85fb7b34
FB
1233
1234 rtp_opened:
bfc6db44 1235 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1236 have_port:
0ad306bc 1237 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1238 "%s/UDP;", trans_pref);
1239 if (rt->server_type != RTSP_SERVER_REAL)
1240 av_strlcat(transport, "unicast;", sizeof(transport));
1241 av_strlcatf(transport, sizeof(transport),
1242 "client_port=%d", port);
f830c9a4
RB
1243 if (rt->transport == RTSP_TRANSPORT_RTP &&
1244 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1245 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1246 }
1247
1248 /* RTP/TCP */
90abbdba 1249 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1250 /* For WMS streams, the application streams are only used for
090438cc
RB
1251 * UDP. When trying to set it up for TCP streams, the server
1252 * will return an error. Therefore, we skip those streams. */
1253 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1254 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1255 AVMEDIA_TYPE_DATA)
090438cc 1256 continue;
0ad306bc 1257 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1258 "%s/TCP;", trans_pref);
895678f8 1259 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1260 av_strlcat(transport, "unicast;", sizeof(transport));
1261 av_strlcatf(transport, sizeof(transport),
1262 "interleaved=%d-%d",
1263 interleave, interleave + 1);
1264 interleave += 2;
1617ad97
FB
1265 }
1266
90abbdba 1267 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1268 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1269 "%s/UDP;multicast", trans_pref);
1617ad97 1270 }
69adcc4f
MS
1271 if (s->oformat) {
1272 av_strlcat(transport, ";mode=receive", sizeof(transport));
1273 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1274 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1275 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1276 snprintf(cmd, sizeof(cmd),
b6892136 1277 "Transport: %s\r\n",
b17d11c6 1278 transport);
76b0d03d
MS
1279 if (rt->accept_dynamic_rate)
1280 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1281 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1282 char real_res[41], real_csum[9];
1283 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1284 real_challenge);
1285 av_strlcatf(cmd, sizeof(cmd),
1286 "If-Match: %s\r\n"
1287 "RealChallenge2: %s, sd=%s\r\n",
1288 rt->session_id, real_res, real_csum);
1289 }
b17d11c6 1290 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1291 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1292 err = 1;
1293 goto fail;
7e6ca34f
RB
1294 } else if (reply->status_code != RTSP_STATUS_OK ||
1295 reply->nb_transports != 1) {
1617ad97
FB
1296 err = AVERROR_INVALIDDATA;
1297 goto fail;
1298 }
1299
1300 /* XXX: same protocol for all streams is required */
1301 if (i > 0) {
119b4668
RB
1302 if (reply->transports[0].lower_transport != rt->lower_transport ||
1303 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1304 err = AVERROR_INVALIDDATA;
1305 goto fail;
1306 }
1307 } else {
90abbdba 1308 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1309 rt->transport = reply->transports[0].transport;
1617ad97
FB
1310 }
1311
8c579c1c
MS
1312 /* Fail if the server responded with another lower transport mode
1313 * than what we requested. */
1314 if (reply->transports[0].lower_transport != lower_transport) {
1315 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1316 err = AVERROR_INVALIDDATA;
1317 goto fail;
1617ad97
FB
1318 }
1319
90abbdba
RB
1320 switch(reply->transports[0].lower_transport) {
1321 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1322 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1323 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1324 break;
115329f1 1325
c8965800 1326 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1327 char url[1024], options[30] = "";
c8965800 1328
9867aea5 1329 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1330 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1331 /* Use source address if specified */
1332 if (reply->transports[0].source[0]) {
1333 ff_url_join(url, sizeof(url), "rtp", NULL,
1334 reply->transports[0].source,
d8407339 1335 reply->transports[0].server_port_min, "%s", options);
619298a8 1336 } else {
7bac991f 1337 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1338 reply->transports[0].server_port_min, "%s", options);
619298a8 1339 }
c8965800 1340 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1341 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1342 err = AVERROR_INVALIDDATA;
1343 goto fail;
1617ad97 1344 }
9c8fa20d
MS
1345 /* Try to initialize the connection state in a
1346 * potential NAT router by sending dummy packets.
1347 * RTP/RTCP dummy packets are used for RDT, too.
1348 */
44b70ce5
MS
1349 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1350 CONFIG_RTPDEC)
bfc6db44 1351 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1352 break;
c8965800
RB
1353 }
1354 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1355 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1356 struct sockaddr_storage addr;
c8965800
RB
1357 int port, ttl;
1358
7934b15d
MS
1359 if (reply->transports[0].destination.ss_family) {
1360 addr = reply->transports[0].destination;
c8965800
RB
1361 port = reply->transports[0].port_min;
1362 ttl = reply->transports[0].ttl;
1363 } else {
7934b15d 1364 addr = rtsp_st->sdp_ip;
c8965800
RB
1365 port = rtsp_st->sdp_port;
1366 ttl = rtsp_st->sdp_ttl;
1367 }
6294d708
MS
1368 if (ttl > 0)
1369 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1370 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1371 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1372 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1373 port, "%s", optbuf);
6f1b7b39 1374 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1375 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1376 err = AVERROR_INVALIDDATA;
1377 goto fail;
1617ad97
FB
1378 }
1379 break;
1380 }
c8965800 1381 }
d1ccf0e0 1382
ee0cb67f 1383 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1384 goto fail;
1617ad97
FB
1385 }
1386
30e79845
RB
1387 if (reply->timeout > 0)
1388 rt->timeout = reply->timeout;
1389
2e889ae4 1390 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1391 rt->need_subscription = 1;
1392
53620bba
RB
1393 return 0;
1394
1395fail:
aeb2de1c 1396 ff_rtsp_undo_setup(s);
53620bba
RB
1397 return err;
1398}
1399
b8c2c41d
JA
1400void ff_rtsp_close_connections(AVFormatContext *s)
1401{
1402 RTSPState *rt = s->priv_data;
e52a9145
AK
1403 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1404 ffurl_close(rt->rtsp_hd);
6217b645 1405 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1406}
1407
3307e6ea 1408int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1409{
1410 RTSPState *rt = s->priv_data;
921da217 1411 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
03f8fc08 1412 int port, err, tcp_fd;
354b7573 1413 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1414 int lower_transport_mask = 0;
2762a7a2 1415 char real_challenge[64] = "";
03f8fc08
MS
1416 struct sockaddr_storage peer;
1417 socklen_t peer_len = sizeof(peer);
57b5555c 1418
dbb06b8c
MS
1419 if (rt->rtp_port_max < rt->rtp_port_min) {
1420 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1421 "than min port %d\n", rt->rtp_port_max,
1422 rt->rtp_port_min);
1423 return AVERROR(EINVAL);
1424 }
1425
57b5555c
MS
1426 if (!ff_network_init())
1427 return AVERROR(EIO);
eca4850c 1428
4fa57d52
MS
1429 if (s->max_delay < 0) /* Not set by the caller */
1430 s->max_delay = 0;
1431
f5d33f52 1432 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1433 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1434 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1435 rt->control_transport = RTSP_MODE_TUNNEL;
1436 }
1437 /* Only pass through valid flags from here */
1438 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1439
1440redirect:
1441 lower_transport_mask = rt->lower_transport_mask;
53620bba 1442 /* extract hostname and port */
f3bfe388 1443 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1444 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1445 if (*auth) {
aa8bf2fb 1446 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1447 }
53620bba
RB
1448 if (port < 0)
1449 port = RTSP_DEFAULT_PORT;
1450
90abbdba 1451 if (!lower_transport_mask)
2a1d51c5 1452 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1453
3e24c770 1454 if (s->oformat) {
b7dc88fc
MS
1455 /* Only UDP or TCP - UDP multicast isn't supported. */
1456 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1457 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1458 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1459 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1460 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1461 err = AVERROR(EINVAL);
1462 goto fail;
1463 }
1464 }
1465
4bc5cc23
MS
1466 /* Construct the URI used in request; this is similar to s->filename,
1467 * but with authentication credentials removed and RTSP specific options
1468 * stripped out. */
1469 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1470 host, port, "%s", path);
1471
f5d33f52
JA
1472 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1473 /* set up initial handshake for tunneling */
1474 char httpname[1024];
1475 char sessioncookie[17];
1476 char headers[1024];
1477
10ed37b5 1478 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1479 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1480 av_get_random_seed(), av_get_random_seed());
1481
1482 /* GET requests */
6f1b7b39
MS
1483 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1484 &s->interrupt_callback) < 0) {
f5d33f52
JA
1485 err = AVERROR(EIO);
1486 goto fail;
1487 }
1488
1489 /* generate GET headers */
1490 snprintf(headers, sizeof(headers),
1491 "x-sessioncookie: %s\r\n"
1492 "Accept: application/x-rtsp-tunnelled\r\n"
1493 "Pragma: no-cache\r\n"
1494 "Cache-Control: no-cache\r\n",
1495 sessioncookie);
196bf28c 1496 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1497
1498 /* complete the connection */
ddffc2fd 1499 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1500 err = AVERROR(EIO);
1501 goto fail;
1502 }
1503
1504 /* POST requests */
6f1b7b39
MS
1505 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1506 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1507 err = AVERROR(EIO);
1508 goto fail;
1509 }
1510
1511 /* generate POST headers */
1512 snprintf(headers, sizeof(headers),
1513 "x-sessioncookie: %s\r\n"
1514 "Content-Type: application/x-rtsp-tunnelled\r\n"
1515 "Pragma: no-cache\r\n"
1516 "Cache-Control: no-cache\r\n"
1517 "Content-Length: 32767\r\n"
1518 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1519 sessioncookie);
196bf28c 1520 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1521 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1522
a8ead332
MS
1523 /* Initialize the authentication state for the POST session. The HTTP
1524 * protocol implementation doesn't properly handle multi-pass
1525 * authentication for POST requests, since it would require one of
1526 * the following:
1527 * - implementing Expect: 100-continue, which many HTTP servers
1528 * don't support anyway, even less the RTSP servers that do HTTP
1529 * tunneling
1530 * - sending the whole POST data until getting a 401 reply specifying
1531 * what authentication method to use, then resending all that data
1532 * - waiting for potential 401 replies directly after sending the
1533 * POST header (waiting for some unspecified time)
1534 * Therefore, we copy the full auth state, which works for both basic
1535 * and digest. (For digest, we would have to synchronize the nonce
1536 * count variable between the two sessions, if we'd do more requests
1537 * with the original session, though.)
1538 */
1539 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1540
9290f15d 1541 /* complete the connection */
ddffc2fd 1542 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1543 err = AVERROR(EIO);
1544 goto fail;
1545 }
f5d33f52 1546 } else {
48e77473 1547 /* open the tcp connection */
41874d0a 1548 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1549 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1550 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1551 err = AVERROR(EIO);
1552 goto fail;
1553 }
00e4a1f4 1554 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1555 }
53620bba
RB
1556 rt->seq = 0;
1557
1869ea03 1558 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1559 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1560 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1561 NULL, 0, NI_NUMERICHOST);
1562 }
1563
c8965800
RB
1564 /* request options supported by the server; this also detects server
1565 * type */
1cf151e9 1566 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1567 cmd[0] = 0;
2e889ae4 1568 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1569 av_strlcat(cmd,
f75e3da5 1570 /*
1cf151e9
RB
1571 * The following entries are required for proper
1572 * streaming from a Realmedia server. They are
1573 * interdependent in some way although we currently
1574 * don't quite understand how. Values were copied
1575 * from mplayer SVN r23589.
f75e3da5
DB
1576 * ClientChallenge is a 16-byte ID in hex
1577 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1578 */
1579 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1580 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1581 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1582 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1583 sizeof(cmd));
b17d11c6 1584 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1585 if (reply->status_code != RTSP_STATUS_OK) {
1586 err = AVERROR_INVALIDDATA;
1587 goto fail;
1588 }
1589
1590 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1591 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1592 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1593 continue;
bb3244de 1594 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1595 rt->server_type = RTSP_SERVER_WMS;
c8965800 1596 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1597 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1598 break;
1599 }
1600
44b70ce5 1601 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1602 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1603 else if (CONFIG_RTSP_MUXER)
c2688f3a 1604 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1605 if (err)
53620bba 1606 goto fail;
53620bba 1607
8a8754d8 1608 do {
c8965800
RB
1609 int lower_transport = ff_log2_tab[lower_transport_mask &
1610 ~(lower_transport_mask - 1)];
8a8754d8 1611
fef5649a 1612 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1613 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1614 real_challenge : NULL);
8a8754d8 1615 if (err < 0)
7e6ca34f 1616 goto fail;
90abbdba
RB
1617 lower_transport_mask &= ~(1 << lower_transport);
1618 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1619 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1620 goto fail;
1621 }
1622 } while (err);
53620bba 1623
2762a7a2
MS
1624 rt->lower_transport_mask = lower_transport_mask;
1625 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1626 rt->state = RTSP_STATE_IDLE;
c8965800 1627 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1628 return 0;
1629 fail:
3307e6ea 1630 ff_rtsp_close_streams(s);
b8c2c41d 1631 ff_rtsp_close_connections(s);
35cfd646 1632 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1633 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1634 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1635 reply->status_code,
1636 s->filename);
1637 goto redirect;
1638 }
57b5555c 1639 ff_network_close();
1617ad97
FB
1640 return err;
1641}
2e802e38 1642#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1643
44b70ce5 1644#if CONFIG_RTPDEC
0e59034e 1645static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1646 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1647{
1648 RTSPState *rt = s->priv_data;
1649 RTSPStream *rtsp_st;
a8475bbd
LB
1650 int n, i, ret, tcp_fd, timeout_cnt = 0;
1651 int max_p = 0;
1652 struct pollfd *p = rt->p;
0e59034e 1653
c8965800 1654 for (;;) {
9957cdbf 1655 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1656 return AVERROR_EXIT;
321259c1
MS
1657 if (wait_end && wait_end - av_gettime() < 0)
1658 return AVERROR(EAGAIN);
a8475bbd 1659 max_p = 0;
0e59034e 1660 if (rt->rtsp_hd) {
1869ea03 1661 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1662 p[max_p].fd = tcp_fd;
1663 p[max_p++].events = POLLIN;
0e59034e 1664 } else {
0e59034e
RB
1665 tcp_fd = -1;
1666 }
c8965800 1667 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1668 rtsp_st = rt->rtsp_streams[i];
1669 if (rtsp_st->rtp_handle) {
1869ea03 1670 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1671 p[max_p++].events = POLLIN;
bfc6db44 1672 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1673 p[max_p++].events = POLLIN;
0e59034e
RB
1674 }
1675 }
a8475bbd 1676 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1677 if (n > 0) {
a8475bbd 1678 int j = 1 - (tcp_fd == -1);
9cba6f5f 1679 timeout_cnt = 0;
c8965800 1680 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1681 rtsp_st = rt->rtsp_streams[i];
1682 if (rtsp_st->rtp_handle) {
a8475bbd 1683 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1684 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1685 if (ret > 0) {
1686 *prtsp_st = rtsp_st;
1687 return ret;
1688 }
1689 }
a8475bbd 1690 j+=2;
0e59034e
RB
1691 }
1692 }
5fe8021a 1693#if CONFIG_RTSP_DEMUXER
a8475bbd 1694 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1695 RTSPMessageHeader reply;
1696
3df54c6b 1697 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1698 if (ret < 0)
1699 return ret;
0e59034e 1700 /* XXX: parse message */
c02fd3d2 1701 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1702 return 0;
1703 }
5fe8021a 1704#endif
9cba6f5f 1705 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1706 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1707 } else if (n < 0 && errno != EINTR)
1708 return AVERROR(errno);
0e59034e
RB
1709 }
1710}
1711
0526c6f7 1712int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1713{
1714 RTSPState *rt = s->priv_data;
1715 int ret, len;
321259c1
MS
1716 RTSPStream *rtsp_st, *first_queue_st = NULL;
1717 int64_t wait_end = 0;
0e59034e 1718
b20359f5
JA
1719 if (rt->nb_byes == rt->nb_rtsp_streams)
1720 return AVERROR_EOF;
1721
0e59034e
RB
1722 /* get next frames from the same RTP packet */
1723 if (rt->cur_transport_priv) {
c8965800 1724 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1725 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1726 } else
bfc6db44 1727 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1728 if (ret == 0) {
1729 rt->cur_transport_priv = NULL;
1730 return 0;
1731 } else if (ret == 1) {
1732 return 0;
c8965800 1733 } else
0e59034e 1734 rt->cur_transport_priv = NULL;
0e59034e
RB
1735 }
1736
321259c1
MS
1737 if (rt->transport == RTSP_TRANSPORT_RTP) {
1738 int i;
1739 int64_t first_queue_time = 0;
1740 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1741 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1742 int64_t queue_time;
1743 if (!rtpctx)
1744 continue;
1745 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1746 if (queue_time && (queue_time - first_queue_time < 0 ||
1747 !first_queue_time)) {
1748 first_queue_time = queue_time;
1749 first_queue_st = rt->rtsp_streams[i];
1750 }
1751 }
1752 if (first_queue_time)
1753 wait_end = first_queue_time + s->max_delay;
1754 }
1755
0e59034e
RB
1756 /* read next RTP packet */
1757 redo:
96a7c975
MS
1758 if (!rt->recvbuf) {
1759 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1760 if (!rt->recvbuf)
1761 return AVERROR(ENOMEM);
1762 }
1763
0e59034e
RB
1764 switch(rt->lower_transport) {
1765 default:
5fe8021a 1766#if CONFIG_RTSP_DEMUXER
0e59034e 1767 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1768 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1769 break;
5fe8021a 1770#endif
0e59034e
RB
1771 case RTSP_LOWER_TRANSPORT_UDP:
1772 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1773 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1774 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1775 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1776 break;
1777 }
321259c1
MS
1778 if (len == AVERROR(EAGAIN) && first_queue_st &&
1779 rt->transport == RTSP_TRANSPORT_RTP) {
1780 rtsp_st = first_queue_st;
bfc6db44 1781 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1782 goto end;
1783 }
0e59034e
RB
1784 if (len < 0)
1785 return len;
1786 if (len == 0)
1787 return AVERROR_EOF;
c8965800 1788 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1789 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1790 } else {
bfc6db44 1791 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1792 if (ret < 0) {
1793 /* Either bad packet, or a RTCP packet. Check if the
1794 * first_rtcp_ntp_time field was initialized. */
1795 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1796 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1797 /* first_rtcp_ntp_time has been initialized for this stream,
1798 * copy the same value to all other uninitialized streams,
1799 * in order to map their timestamp origin to the same ntp time
1800 * as this one. */
1801 int i;
3a1cdcc7
MS
1802 AVStream *st = NULL;
1803 if (rtsp_st->stream_index >= 0)
1804 st = s->streams[rtsp_st->stream_index];
2cab6b48 1805 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1806 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1807 AVStream *st2 = NULL;
1808 if (rt->rtsp_streams[i]->stream_index >= 0)
1809 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1810 if (rtpctx2 && st && st2 &&
1811 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1812 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1813 rtpctx2->rtcp_ts_offset = av_rescale_q(
1814 rtpctx->rtcp_ts_offset, st->time_base,
1815 st2->time_base);
1816 }
2cab6b48
MS
1817 }
1818 }
b20359f5
JA
1819 if (ret == -RTCP_BYE) {
1820 rt->nb_byes++;
1821
1822 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1823 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1824
1825 if (rt->nb_byes == rt->nb_rtsp_streams)
1826 return AVERROR_EOF;
1827 }
2cab6b48
MS
1828 }
1829 }
321259c1 1830end:
0e59034e
RB
1831 if (ret < 0)
1832 goto redo;
c8965800 1833 if (ret == 1)
0e59034e
RB
1834 /* more packets may follow, so we save the RTP context */
1835 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1836
1837 return ret;
1838}
44b70ce5 1839#endif /* CONFIG_RTPDEC */
0e59034e 1840
44b70ce5 1841#if CONFIG_SDP_DEMUXER
cb1fdc61 1842static int sdp_probe(AVProbeData *p1)
93ced3e8 1843{
0e1ceacd 1844 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1845
3fbd12d1 1846 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1847 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1848 if (p + sizeof("c=IN IP") - 1 < p_end &&
1849 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1850 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1851
c8965800 1852 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1853 if (++p >= p_end)
cb1fdc61 1854 break;
cb1fdc61
FB
1855 if (*p == '\r')
1856 p++;
1857 }
93ced3e8
FB
1858 return 0;
1859}
1860
6e9651d1 1861static int sdp_read_header(AVFormatContext *s)
93ced3e8 1862{
8b1ab7bf 1863 RTSPState *rt = s->priv_data;
93ced3e8
FB
1864 RTSPStream *rtsp_st;
1865 int size, i, err;
1866 char *content;
1867 char url[1024];
1868
57b5555c
MS
1869 if (!ff_network_init())
1870 return AVERROR(EIO);
1871
4fa57d52
MS
1872 if (s->max_delay < 0) /* Not set by the caller */
1873 s->max_delay = 0;
1874
93ced3e8
FB
1875 /* read the whole sdp file */
1876 /* XXX: better loading */
1877 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1878 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1879 if (size <= 0) {
1880 av_free(content);
1881 return AVERROR_INVALIDDATA;
1882 }
1883 content[size] ='\0';
1884
f81c7ac7 1885 err = ff_sdp_parse(s, content);
93ced3e8 1886 av_free(content);
f81c7ac7 1887 if (err) goto fail;
93ced3e8
FB
1888
1889 /* open each RTP stream */
c8965800 1890 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1891 char namebuf[50];
8b1ab7bf 1892 rtsp_st = rt->rtsp_streams[i];
115329f1 1893
3fbd12d1
MS
1894 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1895 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1896 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1897 namebuf, rtsp_st->sdp_port,
51369f28
MS
1898 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1899 rtsp_st->sdp_ttl,
1900 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
6f1b7b39 1901 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1902 &s->interrupt_callback, NULL) < 0) {
93ced3e8
FB
1903 err = AVERROR_INVALIDDATA;
1904 goto fail;
1905 }
ee0cb67f 1906 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1907 goto fail;
93ced3e8
FB
1908 }
1909 return 0;
c8965800 1910fail:
3307e6ea 1911 ff_rtsp_close_streams(s);
57b5555c 1912 ff_network_close();
93ced3e8
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1913 return err;
1914}
1915
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FB
1916static int sdp_read_close(AVFormatContext *s)
1917{
3307e6ea 1918 ff_rtsp_close_streams(s);
57b5555c 1919 ff_network_close();
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1920 return 0;
1921}
1922
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MS
1923static const AVClass sdp_demuxer_class = {
1924 .class_name = "SDP demuxer",
1925 .item_name = av_default_item_name,
1926 .option = sdp_options,
1927 .version = LIBAVUTIL_VERSION_INT,
1928};
1929
c6610a21 1930AVInputFormat ff_sdp_demuxer = {
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1931 .name = "sdp",
1932 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1933 .priv_data_size = sizeof(RTSPState),
1934 .read_probe = sdp_probe,
1935 .read_header = sdp_read_header,
1936 .read_packet = ff_rtsp_fetch_packet,
1937 .read_close = sdp_read_close,
17934c18 1938 .priv_class = &sdp_demuxer_class,
93ced3e8 1939};
44b70ce5 1940#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1941
44b70ce5 1942#if CONFIG_RTP_DEMUXER
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1943static int rtp_probe(AVProbeData *p)
1944{
1945 if (av_strstart(p->filename, "rtp:", NULL))
1946 return AVPROBE_SCORE_MAX;
1947 return 0;
1948}
1949
6e9651d1 1950static int rtp_read_header(AVFormatContext *s)
44594cc7
MS
1951{
1952 uint8_t recvbuf[1500];
1953 char host[500], sdp[500];
1954 int ret, port;
1955 URLContext* in = NULL;
1956 int payload_type;
1957 AVCodecContext codec;
1958 struct sockaddr_storage addr;
ae628ec1 1959 AVIOContext pb;
44594cc7 1960 socklen_t addrlen = sizeof(addr);
30266038 1961 RTSPState *rt = s->priv_data;
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MS
1962
1963 if (!ff_network_init())
1964 return AVERROR(EIO);
1965
6f1b7b39 1966 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 1967 &s->interrupt_callback, NULL);
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MS
1968 if (ret)
1969 goto fail;
1970
1971 while (1) {
bc371aca 1972 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
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MS
1973 if (ret == AVERROR(EAGAIN))
1974 continue;
1975 if (ret < 0)
1976 goto fail;
1977 if (ret < 12) {
1978 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1979 continue;
1980 }
1981
1982 if ((recvbuf[0] & 0xc0) != 0x80) {
1983 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1984 "received\n");
1985 continue;
1986 }
1987
298a587f 1988 if (RTP_PT_IS_RTCP(recvbuf[1]))
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1989 continue;
1990
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1991 payload_type = recvbuf[1] & 0x7f;
1992 break;
1993 }
1869ea03 1994 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 1995 ffurl_close(in);
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MS
1996 in = NULL;
1997
1998 memset(&codec, 0, sizeof(codec));
1999 if (ff_rtp_get_codec_info(&codec, payload_type)) {
2000 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2001 "without an SDP file describing it\n",
2002 payload_type);
2003 goto fail;
2004 }
2005 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
2006 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2007 "properly you need an SDP file "
2008 "describing it\n");
2009 }
2010
2011 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2012 NULL, 0, s->filename);
2013
2014 snprintf(sdp, sizeof(sdp),
2015 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2016 addr.ss_family == AF_INET ? 4 : 6, host,
2017 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
2018 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2019 port, payload_type);
2020 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2021
e731b8d8 2022 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
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MS
2023 s->pb = &pb;
2024
2025 /* sdp_read_header initializes this again */
2026 ff_network_close();
2027
30266038
MS
2028 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2029
6e9651d1 2030 ret = sdp_read_header(s);
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MS
2031 s->pb = NULL;
2032 return ret;
2033
2034fail:
2035 if (in)
e52a9145 2036 ffurl_close(in);
44594cc7
MS
2037 ff_network_close();
2038 return ret;
2039}
2040
51369f28
MS
2041static const AVClass rtp_demuxer_class = {
2042 .class_name = "RTP demuxer",
2043 .item_name = av_default_item_name,
2044 .option = rtp_options,
2045 .version = LIBAVUTIL_VERSION_INT,
2046};
2047
c6610a21 2048AVInputFormat ff_rtp_demuxer = {
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2049 .name = "rtp",
2050 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
2051 .priv_data_size = sizeof(RTSPState),
2052 .read_probe = rtp_probe,
2053 .read_header = rtp_read_header,
2054 .read_packet = ff_rtsp_fetch_packet,
2055 .read_close = sdp_read_close,
17934c18
MS
2056 .flags = AVFMT_NOFILE,
2057 .priv_class = &rtp_demuxer_class,
44594cc7 2058};
44b70ce5 2059#endif /* CONFIG_RTP_DEMUXER */