rtpdec_asf: Set the no_resync_search option for the chained asf demuxer
[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
ccfa8aa2 59#define DEFAULT_REORDERING_DELAY 100000
9cba6f5f 60
2c9aa024
MS
61#define OFFSET(x) offsetof(RTSPState, x)
62#define DEC AV_OPT_FLAG_DECODING_PARAM
eca4850c 63#define ENC AV_OPT_FLAG_ENCODING_PARAM
3a6765fb
MS
64
65#define RTSP_FLAG_OPTS(name, longname) \
66 { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
67 { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" }
68
f011fcd6
JB
69#define RTSP_MEDIATYPE_OPTS(name, longname) \
70 { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
71 { "video", "Video", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
72 { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
73 { "data", "Data", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }
74
17fff881 75const AVOption ff_rtsp_options[] = {
2c9aa024 76 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {0}, 0, 1, DEC },
c2ff63e3 77 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags)
eca4850c
MS
78 { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
79 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
80 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
81 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
82 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {(1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
3a6765fb 83 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
f011fcd6 84 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
dbb06b8c
MS
85 { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
86 { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
17fff881
MS
87 { NULL },
88};
89
51369f28
MS
90static const AVOption sdp_options[] = {
91 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
f011fcd6 92 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
51369f28
MS
93 { NULL },
94};
95
96static const AVOption rtp_options[] = {
97 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
98 { NULL },
99};
100
1ef36a70
RB
101static void get_word_until_chars(char *buf, int buf_size,
102 const char *sep, const char **pp)
1617ad97
FB
103{
104 const char *p;
105 char *q;
106
107 p = *pp;
30619e6e 108 p += strspn(p, SPACE_CHARS);
1617ad97
FB
109 q = buf;
110 while (!strchr(sep, *p) && *p != '\0') {
111 if ((q - buf) < buf_size - 1)
112 *q++ = *p;
113 p++;
114 }
115 if (buf_size > 0)
116 *q = '\0';
117 *pp = p;
118}
119
1ef36a70
RB
120static void get_word_sep(char *buf, int buf_size, const char *sep,
121 const char **pp)
1617ad97 122{
1ef36a70
RB
123 if (**pp == '/') (*pp)++;
124 get_word_until_chars(buf, buf_size, sep, pp);
125}
1617ad97 126
1ef36a70
RB
127static void get_word(char *buf, int buf_size, const char **pp)
128{
129 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
130}
131
8bf0f969
MS
132/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
133 * and end time.
134 * Used for seeking in the rtp stream.
135 */
136static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
137{
138 char buf[256];
139
140 p += strspn(p, SPACE_CHARS);
141 if (!av_stristart(p, "npt=", &p))
142 return;
143
144 *start = AV_NOPTS_VALUE;
145 *end = AV_NOPTS_VALUE;
146
147 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 148 av_parse_time(start, buf, 1);
8bf0f969
MS
149 if (*p == '-') {
150 p++;
151 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 152 av_parse_time(end, buf, 1);
8bf0f969
MS
153 }
154// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
155// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
156}
157
158static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
159{
a92be9b8 160 struct addrinfo hints = { 0 }, *ai = NULL;
8bf0f969
MS
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;
a92be9b8 499 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
115329f1 500
1617ad97 501 p = content;
c8965800 502 for (;;) {
30619e6e 503 p += strspn(p, SPACE_CHARS);
1617ad97
FB
504 letter = *p;
505 if (letter == '\0')
506 break;
507 p++;
508 if (*p != '=')
509 goto next_line;
510 p++;
511 /* get the content */
512 q = buf;
b6892136 513 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
514 if ((q - buf) < sizeof(buf) - 1)
515 *q++ = *p;
516 p++;
517 }
518 *q = '\0';
93ced3e8 519 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
520 next_line:
521 while (*p != '\n' && *p != '\0')
522 p++;
523 if (*p == '\n')
524 p++;
525 }
a8475bbd
LB
526 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
527 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
528 return 0;
529}
44b70ce5 530#endif /* CONFIG_RTPDEC */
1617ad97 531
93e7490e
MS
532void ff_rtsp_undo_setup(AVFormatContext *s)
533{
534 RTSPState *rt = s->priv_data;
535 int i;
536
537 for (i = 0; i < rt->nb_rtsp_streams; i++) {
538 RTSPStream *rtsp_st = rt->rtsp_streams[i];
539 if (!rtsp_st)
540 continue;
541 if (rtsp_st->transport_priv) {
542 if (s->oformat) {
543 AVFormatContext *rtpctx = rtsp_st->transport_priv;
544 av_write_trailer(rtpctx);
545 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
546 uint8_t *ptr;
6dc7d80d 547 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
548 av_free(ptr);
549 } else {
22a3212e 550 avio_close(rtpctx->pb);
93e7490e 551 }
b22dbb29 552 avformat_free_context(rtpctx);
93e7490e
MS
553 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
554 ff_rdt_parse_close(rtsp_st->transport_priv);
555 else if (CONFIG_RTPDEC)
bfc6db44 556 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
557 }
558 rtsp_st->transport_priv = NULL;
559 if (rtsp_st->rtp_handle)
e52a9145 560 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
561 rtsp_st->rtp_handle = NULL;
562 }
563}
564
1ced9da3 565/* close and free RTSP streams */
3307e6ea 566void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 567{
52aa4338 568 RTSPState *rt = s->priv_data;
1ced9da3
LA
569 int i;
570 RTSPStream *rtsp_st;
571
93e7490e 572 ff_rtsp_undo_setup(s);
c8965800 573 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
574 rtsp_st = rt->rtsp_streams[i];
575 if (rtsp_st) {
1ced9da3 576 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 577 rtsp_st->dynamic_handler->free(
c8965800 578 rtsp_st->dynamic_protocol_context);
ea7f0807 579 av_free(rtsp_st);
1ced9da3
LA
580 }
581 }
582 av_free(rt->rtsp_streams);
583 if (rt->asf_ctx) {
cd3716b9 584 avformat_close_input(&rt->asf_ctx);
1ced9da3 585 }
a8475bbd 586 av_free(rt->p);
96a7c975 587 av_free(rt->recvbuf);
1ced9da3
LA
588}
589
c8965800 590static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
591{
592 RTSPState *rt = s->priv_data;
593 AVStream *st = NULL;
594
595 /* open the RTP context */
596 if (rtsp_st->stream_index >= 0)
597 st = s->streams[rtsp_st->stream_index];
598 if (!st)
599 s->ctx_flags |= AVFMTCTX_NOHEADER;
600
44b70ce5 601 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
602 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
603 rtsp_st->rtp_handle,
604 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 605 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 606 rtsp_st->rtp_handle = NULL;
44b70ce5 607 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
608 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
609 rtsp_st->dynamic_protocol_context,
610 rtsp_st->dynamic_handler);
44b70ce5 611 else if (CONFIG_RTPDEC)
bfc6db44 612 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
613 rtsp_st->sdp_payload_type,
614 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
615 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
616
617 if (!rtsp_st->transport_priv) {
618 return AVERROR(ENOMEM);
44b70ce5 619 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 620 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
621 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
622 rtsp_st->dynamic_protocol_context,
623 rtsp_st->dynamic_handler);
1ced9da3
LA
624 }
625 }
626
627 return 0;
628}
629
6f5a3d0a 630#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
631static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
632{
633 const char *p;
634 int v;
635
636 p = *pp;
30619e6e 637 p += strspn(p, SPACE_CHARS);
1617ad97
FB
638 v = strtol(p, (char **)&p, 10);
639 if (*p == '-') {
640 p++;
641 *min_ptr = v;
642 v = strtol(p, (char **)&p, 10);
643 *max_ptr = v;
644 } else {
645 *min_ptr = v;
646 *max_ptr = v;
647 }
648 *pp = p;
649}
650
651/* XXX: only one transport specification is parsed */
a9e534d5 652static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
653{
654 char transport_protocol[16];
655 char profile[16];
656 char lower_transport[16];
657 char parameter[16];
658 RTSPTransportField *th;
659 char buf[256];
115329f1 660
1617ad97 661 reply->nb_transports = 0;
115329f1 662
c8965800 663 for (;;) {
30619e6e 664 p += strspn(p, SPACE_CHARS);
1617ad97
FB
665 if (*p == '\0')
666 break;
667
668 th = &reply->transports[reply->nb_transports];
669
115329f1 670 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 671 "/", &p);
bb3244de 672 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
673 get_word_sep(profile, sizeof(profile), "/;,", &p);
674 lower_transport[0] = '\0';
675 /* rtp/avp/<protocol> */
676 if (*p == '/') {
7ecc634e
LB
677 get_word_sep(lower_transport, sizeof(lower_transport),
678 ";,", &p);
119b4668
RB
679 }
680 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
681 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
682 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 683 /* x-pn-tng/<protocol> */
e1502118
LB
684 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
685 profile[0] = '\0';
119b4668 686 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 687 }
bb3244de 688 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 689 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 690 else
90abbdba 691 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 692
1617ad97
FB
693 if (*p == ';')
694 p++;
695 /* get each parameter */
696 while (*p != '\0' && *p != ',') {
697 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
698 if (!strcmp(parameter, "port")) {
699 if (*p == '=') {
700 p++;
701 rtsp_parse_range(&th->port_min, &th->port_max, &p);
702 }
703 } else if (!strcmp(parameter, "client_port")) {
704 if (*p == '=') {
705 p++;
115329f1 706 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
707 &th->client_port_max, &p);
708 }
709 } else if (!strcmp(parameter, "server_port")) {
710 if (*p == '=') {
711 p++;
115329f1 712 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
713 &th->server_port_max, &p);
714 }
715 } else if (!strcmp(parameter, "interleaved")) {
716 if (*p == '=') {
717 p++;
115329f1 718 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
719 &th->interleaved_max, &p);
720 }
721 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
722 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
723 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
724 } else if (!strcmp(parameter, "ttl")) {
725 if (*p == '=') {
726 p++;
727 th->ttl = strtol(p, (char **)&p, 10);
728 }
729 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
730 if (*p == '=') {
731 p++;
732 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 733 get_sockaddr(buf, &th->destination);
1617ad97 734 }
619298a8
JW
735 } else if (!strcmp(parameter, "source")) {
736 if (*p == '=') {
737 p++;
738 get_word_sep(buf, sizeof(buf), ";,", &p);
739 av_strlcpy(th->source, buf, sizeof(th->source));
740 }
1617ad97 741 }
619298a8 742
1617ad97
FB
743 while (*p != ';' && *p != '\0' && *p != ',')
744 p++;
745 if (*p == ';')
746 p++;
747 }
748 if (*p == ',')
749 p++;
750
751 reply->nb_transports++;
752 }
753}
754
29db7c3a
MS
755static void handle_rtp_info(RTSPState *rt, const char *url,
756 uint32_t seq, uint32_t rtptime)
757{
758 int i;
759 if (!rtptime || !url[0])
760 return;
761 if (rt->transport != RTSP_TRANSPORT_RTP)
762 return;
763 for (i = 0; i < rt->nb_rtsp_streams; i++) {
764 RTSPStream *rtsp_st = rt->rtsp_streams[i];
765 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
766 if (!rtpctx)
767 continue;
768 if (!strcmp(rtsp_st->control_url, url)) {
769 rtpctx->base_timestamp = rtptime;
770 break;
771 }
772 }
773}
774
775static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
776{
777 int read = 0;
778 char key[20], value[1024], url[1024] = "";
779 uint32_t seq = 0, rtptime = 0;
780
781 for (;;) {
782 p += strspn(p, SPACE_CHARS);
783 if (!*p)
784 break;
785 get_word_sep(key, sizeof(key), "=", &p);
786 if (*p != '=')
787 break;
788 p++;
789 get_word_sep(value, sizeof(value), ";, ", &p);
790 read++;
791 if (!strcmp(key, "url"))
792 av_strlcpy(url, value, sizeof(url));
793 else if (!strcmp(key, "seq"))
4515f9b5 794 seq = strtoul(value, NULL, 10);
29db7c3a 795 else if (!strcmp(key, "rtptime"))
4515f9b5 796 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
797 if (*p == ',') {
798 handle_rtp_info(rt, url, seq, rtptime);
799 url[0] = '\0';
800 seq = rtptime = 0;
801 read = 0;
802 }
803 if (*p)
804 p++;
805 }
806 if (read > 0)
807 handle_rtp_info(rt, url, seq, rtptime);
808}
809
2626308a 810void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 811 RTSPState *rt, const char *method)
1617ad97
FB
812{
813 const char *p;
814
815 /* NOTE: we do case independent match for broken servers */
816 p = buf;
f7d78f36 817 if (av_stristart(p, "Session:", &p)) {
30e79845 818 int t;
1617ad97 819 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
820 if (av_stristart(p, ";timeout=", &p) &&
821 (t = strtol(p, NULL, 10)) > 0) {
822 reply->timeout = t;
823 }
f7d78f36 824 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 825 reply->content_length = strtol(p, NULL, 10);
f7d78f36 826 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 827 rtsp_parse_transport(reply, p);
f7d78f36 828 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 829 reply->seq = strtol(p, NULL, 10);
f7d78f36 830 } else if (av_stristart(p, "Range:", &p)) {
31693e00 831 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 832 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 833 p += strspn(p, SPACE_CHARS);
30aa6aed 834 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 835 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 836 p += strspn(p, SPACE_CHARS);
7a86bafa 837 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
838 } else if (av_stristart(p, "Notice:", &p) ||
839 av_stristart(p, "X-Notice:", &p)) {
840 reply->notice = strtol(p, NULL, 10);
d243ba30 841 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 842 p += strspn(p, SPACE_CHARS);
d243ba30 843 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 844 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 845 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
846 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
847 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 848 p += strspn(p, SPACE_CHARS);
acc9ed14 849 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 850 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 851 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
852 if (method && !strcmp(method, "DESCRIBE"))
853 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
854 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
855 p += strspn(p, SPACE_CHARS);
856 if (method && !strcmp(method, "PLAY"))
857 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
858 } else if (av_stristart(p, "Public:", &p) && rt) {
859 if (strstr(p, "GET_PARAMETER") &&
860 method && !strcmp(method, "OPTIONS"))
861 rt->get_parameter_supported = 1;
30eae325
MS
862 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
863 p += strspn(p, SPACE_CHARS);
864 rt->accept_dynamic_rate = atoi(p);
1617ad97
FB
865 }
866}
867
b7b8fc34 868/* skip a RTP/TCP interleaved packet */
ec55edba 869void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
870{
871 RTSPState *rt = s->priv_data;
872 int ret, len, len1;
873 uint8_t buf[1024];
874
dce37564 875 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
876 if (ret != 3)
877 return;
80fb8234 878 len = AV_RB16(buf + 1);
67c9cd69 879
dfd2a005 880 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 881
b7b8fc34
FB
882 /* skip payload */
883 while (len > 0) {
884 len1 = len;
885 if (len1 > sizeof(buf))
886 len1 = sizeof(buf);
dce37564 887 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
888 if (ret != len1)
889 return;
890 len -= len1;
891 }
892}
1617ad97 893
3307e6ea 894int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 895 unsigned char **content_ptr,
3df54c6b 896 int return_on_interleaved_data, const char *method)
1617ad97
FB
897{
898 RTSPState *rt = s->priv_data;
899 char buf[4096], buf1[1024], *q;
900 unsigned char ch;
901 const char *p;
1a6b9a98 902 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
903 unsigned char *content = NULL;
904
1a6b9a98
TW
905start:
906 line_count = 0;
907 request = 0;
908 content = NULL;
d541a7d2 909 memset(reply, 0, sizeof(*reply));
1617ad97 910
1617ad97 911 /* parse reply (XXX: use buffers) */
1617ad97 912 rt->last_reply[0] = '\0';
c8965800 913 for (;;) {
1617ad97 914 q = buf;
c8965800 915 for (;;) {
dce37564 916 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 917 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 918 if (ret != 1)
2401660d 919 return AVERROR_EOF;
1617ad97
FB
920 if (ch == '\n')
921 break;
b7b8fc34
FB
922 if (ch == '$') {
923 /* XXX: only parse it if first char on line ? */
7e726132
RB
924 if (return_on_interleaved_data) {
925 return 1;
926 } else
ec55edba 927 ff_rtsp_skip_packet(s);
b7b8fc34 928 } else if (ch != '\r') {
1617ad97
FB
929 if ((q - buf) < sizeof(buf) - 1)
930 *q++ = ch;
931 }
932 }
933 *q = '\0';
67c9cd69 934
dfd2a005 935 av_dlog(s, "line='%s'\n", buf);
67c9cd69 936
1617ad97
FB
937 /* test if last line */
938 if (buf[0] == '\0')
939 break;
940 p = buf;
941 if (line_count == 0) {
942 /* get reply code */
943 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
944 if (!strncmp(buf1, "RTSP/", 5)) {
945 get_word(buf1, sizeof(buf1), &p);
946 reply->status_code = atoi(buf1);
947 av_strlcpy(reply->reason, p, sizeof(reply->reason));
948 } else {
949 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
950 get_word(buf1, sizeof(buf1), &p); // object
951 request = 1;
952 }
1617ad97 953 } else {
77223c53 954 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
955 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
956 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
957 }
958 line_count++;
959 }
115329f1 960
1a6b9a98 961 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 962 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 963
1617ad97
FB
964 content_length = reply->content_length;
965 if (content_length > 0) {
966 /* leave some room for a trailing '\0' (useful for simple parsing) */
967 content = av_malloc(content_length + 1);
dce37564 968 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
969 content[content_length] = '\0';
970 }
971 if (content_ptr)
972 *content_ptr = content;
e2e2e7dd
AB
973 else
974 av_free(content);
7e726132 975
1a6b9a98
TW
976 if (request) {
977 char buf[1024];
978 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
979 const char* ptr = buf;
980
981 if (!strcmp(reply->reason, "OPTIONS")) {
982 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
983 if (reply->seq)
984 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
985 if (reply->session_id[0])
986 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
987 reply->session_id);
988 } else {
989 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
990 }
991 av_strlcat(buf, "\r\n", sizeof(buf));
992
993 if (rt->control_transport == RTSP_MODE_TUNNEL) {
994 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
995 ptr = base64buf;
996 }
997 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
998
999 rt->last_cmd_time = av_gettime();
1000 /* Even if the request from the server had data, it is not the data
1001 * that the caller wants or expects. The memory could also be leaked
1002 * if the actual following reply has content data. */
1003 if (content_ptr)
1004 av_freep(content_ptr);
1005 /* If method is set, this is called from ff_rtsp_send_cmd,
1006 * where a reply to exactly this request is awaited. For
705eeb5e 1007 * callers from within packet receiving, we just want to
1a6b9a98
TW
1008 * return to the caller and go back to receiving packets. */
1009 if (method)
1010 goto start;
1011 return 0;
1012 }
1013
7ed8211b
LB
1014 if (rt->seq != reply->seq) {
1015 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1016 rt->seq, reply->seq);
1017 }
1018
fccb1770
RB
1019 /* EOS */
1020 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1021 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1022 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1023 rt->state = RTSP_STATE_IDLE;
c8965800 1024 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1025 return AVERROR(EIO); /* data or server error */
c8965800 1026 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1027 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1028 return AVERROR(EPERM);
1029
7e726132 1030 return 0;
1617ad97
FB
1031}
1032
57c4d01e
DEP
1033/**
1034 * Send a command to the RTSP server without waiting for the reply.
1035 *
1036 * @param s RTSP (de)muxer context
1037 * @param method the method for the request
1038 * @param url the target url for the request
1039 * @param headers extra header lines to include in the request
1040 * @param send_content if non-null, the data to send as request body content
1041 * @param send_content_length the length of the send_content data, or 0 if
1042 * send_content is null
1043 *
1044 * @return zero if success, nonzero otherwise
1045 */
1046static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1047 const char *method, const char *url,
1048 const char *headers,
1049 const unsigned char *send_content,
1050 int send_content_length)
29b9f58b
RB
1051{
1052 RTSPState *rt = s->priv_data;
f5d33f52
JA
1053 char buf[4096], *out_buf;
1054 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1055
f5d33f52
JA
1056 /* Add in RTSP headers */
1057 out_buf = buf;
29b9f58b 1058 rt->seq++;
b17d11c6
MS
1059 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1060 if (headers)
1061 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1062 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1063 if (rt->session_id[0] != '\0' && (!headers ||
1064 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1065 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1066 }
aa8bf2fb
MS
1067 if (rt->auth[0]) {
1068 char *str = ff_http_auth_create_response(&rt->auth_state,
1069 rt->auth, url, method);
1070 if (str)
1071 av_strlcat(buf, str, sizeof(buf));
1072 av_free(str);
1073 }
dfd017bf
MS
1074 if (send_content_length > 0 && send_content)
1075 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1076 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1077
f5d33f52
JA
1078 /* base64 encode rtsp if tunneling */
1079 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1080 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1081 out_buf = base64buf;
1082 }
1083
dfd2a005 1084 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1085
925e908b 1086 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1087 if (send_content_length > 0 && send_content) {
1088 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1089 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1090 "with content data not supported\n");
1091 return AVERROR_PATCHWELCOME;
1092 }
925e908b 1093 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1094 }
30e79845 1095 rt->last_cmd_time = av_gettime();
d0382374
JA
1096
1097 return 0;
30e79845
RB
1098}
1099
d0382374 1100int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1101 const char *url, const char *headers)
dfd017bf 1102{
d0382374 1103 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1104}
1105
d0382374 1106int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1107 const char *headers, RTSPMessageHeader *reply,
1108 unsigned char **content_ptr)
30e79845 1109{
d0382374 1110 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1111 content_ptr, NULL, 0);
29b9f58b
RB
1112}
1113
d0382374 1114int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1115 const char *method, const char *url,
1116 const char *header,
1117 RTSPMessageHeader *reply,
1118 unsigned char **content_ptr,
1119 const unsigned char *send_content,
1120 int send_content_length)
dfd017bf 1121{
30af0779
MS
1122 RTSPState *rt = s->priv_data;
1123 HTTPAuthType cur_auth_type;
2f96cc1f 1124 int ret, attempts = 0;
30af0779
MS
1125
1126retry:
1127 cur_auth_type = rt->auth_state.auth_type;
d0382374 1128 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1129 send_content,
1130 send_content_length)))
d0382374 1131 return ret;
dfd017bf 1132
3df54c6b 1133 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1134 return ret;
2f96cc1f 1135 attempts++;
30af0779 1136
2f96cc1f
MS
1137 if (reply->status_code == 401 &&
1138 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1139 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1140 goto retry;
d0382374 1141
bf55cf19 1142 if (reply->status_code > 400){
d93fdcbf 1143 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1144 method,
d93fdcbf
LB
1145 reply->status_code,
1146 reply->reason);
bf55cf19
LB
1147 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1148 }
1149
d0382374 1150 return 0;
dfd017bf
MS
1151}
1152
fef5649a 1153int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1154 int lower_transport, const char *real_challenge)
1617ad97
FB
1155{
1156 RTSPState *rt = s->priv_data;
58f09785 1157 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1158 RTSPStream *rtsp_st;
a9e534d5 1159 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1160 char cmd[2048];
e9dea59f
RB
1161 const char *trans_pref;
1162
119b4668 1163 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1164 trans_pref = "x-pn-tng";
1165 else
1166 trans_pref = "RTP/AVP";
115329f1 1167
30e79845
RB
1168 /* default timeout: 1 minute */
1169 rt->timeout = 60;
1170
1617ad97
FB
1171 /* for each stream, make the setup request */
1172 /* XXX: we assume the same server is used for the control of each
c8965800 1173 * RTSP stream */
d1ccf0e0 1174
58f09785
DV
1175 /* Choose a random starting offset within the first half of the
1176 * port range, to allow for a number of ports to try even if the offset
1177 * happens to be at the end of the random range. */
1178 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1179 /* even random offset */
1180 port_off -= port_off & 0x01;
1181
1182 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1183 char transport[2048];
1184
f75e3da5 1185 /*
f830c9a4
RB
1186 * WMS serves all UDP data over a single connection, the RTX, which
1187 * isn't necessarily the first in the SDP but has to be the first
1188 * to be set up, else the second/third SETUP will fail with a 461.
1189 */
1190 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1191 rt->server_type == RTSP_SERVER_WMS) {
1192 if (i == 0) {
1193 /* rtx first */
1194 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1195 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1196 if (len >= 4 &&
c8965800
RB
1197 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1198 "/rtx"))
f830c9a4
RB
1199 break;
1200 }
1201 if (rtx == rt->nb_rtsp_streams)
1202 return -1; /* no RTX found */
1203 rtsp_st = rt->rtsp_streams[rtx];
1204 } else
1205 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1206 } else
2fea9650 1207 rtsp_st = rt->rtsp_streams[i];
1617ad97 1208
1617ad97 1209 /* RTP/UDP */
90abbdba 1210 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1211 char buf[256];
85fb7b34 1212
f830c9a4
RB
1213 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1214 port = reply->transports[0].client_port_min;
1215 goto have_port;
1216 }
1217
85fb7b34 1218 /* first try in specified port range */
dbb06b8c 1219 while (j <= rt->rtp_port_max) {
bc495bad
DV
1220 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1221 "?localport=%d", j);
1222 /* we will use two ports per rtp stream (rtp and rtcp) */
1223 j += 2;
1224 if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1225 &s->interrupt_callback, NULL))
1226 goto rtp_opened;
1617ad97 1227 }
85fb7b34 1228
a3b058b7
MS
1229 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1230 err = AVERROR(EIO);
1231 goto fail;
85fb7b34
FB
1232
1233 rtp_opened:
bfc6db44 1234 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1235 have_port:
0ad306bc 1236 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1237 "%s/UDP;", trans_pref);
1238 if (rt->server_type != RTSP_SERVER_REAL)
1239 av_strlcat(transport, "unicast;", sizeof(transport));
1240 av_strlcatf(transport, sizeof(transport),
1241 "client_port=%d", port);
f830c9a4
RB
1242 if (rt->transport == RTSP_TRANSPORT_RTP &&
1243 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1244 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1245 }
1246
1247 /* RTP/TCP */
90abbdba 1248 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1249 /* For WMS streams, the application streams are only used for
090438cc
RB
1250 * UDP. When trying to set it up for TCP streams, the server
1251 * will return an error. Therefore, we skip those streams. */
1252 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1253 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1254 AVMEDIA_TYPE_DATA)
090438cc 1255 continue;
0ad306bc 1256 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1257 "%s/TCP;", trans_pref);
895678f8 1258 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1259 av_strlcat(transport, "unicast;", sizeof(transport));
1260 av_strlcatf(transport, sizeof(transport),
1261 "interleaved=%d-%d",
1262 interleave, interleave + 1);
1263 interleave += 2;
1617ad97
FB
1264 }
1265
90abbdba 1266 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1267 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1268 "%s/UDP;multicast", trans_pref);
1617ad97 1269 }
69adcc4f
MS
1270 if (s->oformat) {
1271 av_strlcat(transport, ";mode=receive", sizeof(transport));
1272 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1273 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1274 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1275 snprintf(cmd, sizeof(cmd),
b6892136 1276 "Transport: %s\r\n",
b17d11c6 1277 transport);
76b0d03d
MS
1278 if (rt->accept_dynamic_rate)
1279 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1280 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1281 char real_res[41], real_csum[9];
1282 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1283 real_challenge);
1284 av_strlcatf(cmd, sizeof(cmd),
1285 "If-Match: %s\r\n"
1286 "RealChallenge2: %s, sd=%s\r\n",
1287 rt->session_id, real_res, real_csum);
1288 }
b17d11c6 1289 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1290 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1291 err = 1;
1292 goto fail;
7e6ca34f
RB
1293 } else if (reply->status_code != RTSP_STATUS_OK ||
1294 reply->nb_transports != 1) {
1617ad97
FB
1295 err = AVERROR_INVALIDDATA;
1296 goto fail;
1297 }
1298
1299 /* XXX: same protocol for all streams is required */
1300 if (i > 0) {
119b4668
RB
1301 if (reply->transports[0].lower_transport != rt->lower_transport ||
1302 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1303 err = AVERROR_INVALIDDATA;
1304 goto fail;
1305 }
1306 } else {
90abbdba 1307 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1308 rt->transport = reply->transports[0].transport;
1617ad97
FB
1309 }
1310
8c579c1c
MS
1311 /* Fail if the server responded with another lower transport mode
1312 * than what we requested. */
1313 if (reply->transports[0].lower_transport != lower_transport) {
1314 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1315 err = AVERROR_INVALIDDATA;
1316 goto fail;
1617ad97
FB
1317 }
1318
90abbdba
RB
1319 switch(reply->transports[0].lower_transport) {
1320 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1321 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1322 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1323 break;
115329f1 1324
c8965800 1325 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1326 char url[1024], options[30] = "";
c8965800 1327
9867aea5 1328 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1329 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1330 /* Use source address if specified */
1331 if (reply->transports[0].source[0]) {
1332 ff_url_join(url, sizeof(url), "rtp", NULL,
1333 reply->transports[0].source,
d8407339 1334 reply->transports[0].server_port_min, "%s", options);
619298a8 1335 } else {
7bac991f 1336 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1337 reply->transports[0].server_port_min, "%s", options);
619298a8 1338 }
c8965800 1339 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1340 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1341 err = AVERROR_INVALIDDATA;
1342 goto fail;
1617ad97 1343 }
9c8fa20d
MS
1344 /* Try to initialize the connection state in a
1345 * potential NAT router by sending dummy packets.
1346 * RTP/RTCP dummy packets are used for RDT, too.
1347 */
44b70ce5
MS
1348 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1349 CONFIG_RTPDEC)
bfc6db44 1350 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1351 break;
c8965800
RB
1352 }
1353 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1354 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1355 struct sockaddr_storage addr;
c8965800
RB
1356 int port, ttl;
1357
7934b15d
MS
1358 if (reply->transports[0].destination.ss_family) {
1359 addr = reply->transports[0].destination;
c8965800
RB
1360 port = reply->transports[0].port_min;
1361 ttl = reply->transports[0].ttl;
1362 } else {
7934b15d 1363 addr = rtsp_st->sdp_ip;
c8965800
RB
1364 port = rtsp_st->sdp_port;
1365 ttl = rtsp_st->sdp_ttl;
1366 }
6294d708
MS
1367 if (ttl > 0)
1368 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1369 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1370 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1371 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1372 port, "%s", optbuf);
6f1b7b39 1373 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1374 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1375 err = AVERROR_INVALIDDATA;
1376 goto fail;
1617ad97
FB
1377 }
1378 break;
1379 }
c8965800 1380 }
d1ccf0e0 1381
ee0cb67f 1382 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1383 goto fail;
1617ad97
FB
1384 }
1385
30e79845
RB
1386 if (reply->timeout > 0)
1387 rt->timeout = reply->timeout;
1388
2e889ae4 1389 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1390 rt->need_subscription = 1;
1391
53620bba
RB
1392 return 0;
1393
1394fail:
aeb2de1c 1395 ff_rtsp_undo_setup(s);
53620bba
RB
1396 return err;
1397}
1398
b8c2c41d
JA
1399void ff_rtsp_close_connections(AVFormatContext *s)
1400{
1401 RTSPState *rt = s->priv_data;
e52a9145
AK
1402 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1403 ffurl_close(rt->rtsp_hd);
6217b645 1404 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1405}
1406
3307e6ea 1407int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1408{
1409 RTSPState *rt = s->priv_data;
921da217 1410 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
03f8fc08 1411 int port, err, tcp_fd;
354b7573 1412 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1413 int lower_transport_mask = 0;
2762a7a2 1414 char real_challenge[64] = "";
03f8fc08
MS
1415 struct sockaddr_storage peer;
1416 socklen_t peer_len = sizeof(peer);
57b5555c 1417
dbb06b8c
MS
1418 if (rt->rtp_port_max < rt->rtp_port_min) {
1419 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1420 "than min port %d\n", rt->rtp_port_max,
1421 rt->rtp_port_min);
1422 return AVERROR(EINVAL);
1423 }
1424
57b5555c
MS
1425 if (!ff_network_init())
1426 return AVERROR(EIO);
eca4850c 1427
4fa57d52 1428 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1429 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
4fa57d52 1430
f5d33f52 1431 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1432 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1433 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1434 rt->control_transport = RTSP_MODE_TUNNEL;
1435 }
1436 /* Only pass through valid flags from here */
1437 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1438
1439redirect:
1440 lower_transport_mask = rt->lower_transport_mask;
53620bba 1441 /* extract hostname and port */
f3bfe388 1442 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1443 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1444 if (*auth) {
aa8bf2fb 1445 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1446 }
53620bba
RB
1447 if (port < 0)
1448 port = RTSP_DEFAULT_PORT;
1449
90abbdba 1450 if (!lower_transport_mask)
2a1d51c5 1451 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1452
3e24c770 1453 if (s->oformat) {
b7dc88fc
MS
1454 /* Only UDP or TCP - UDP multicast isn't supported. */
1455 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1456 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1457 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1458 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1459 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1460 err = AVERROR(EINVAL);
1461 goto fail;
1462 }
1463 }
1464
4bc5cc23
MS
1465 /* Construct the URI used in request; this is similar to s->filename,
1466 * but with authentication credentials removed and RTSP specific options
1467 * stripped out. */
1468 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1469 host, port, "%s", path);
1470
f5d33f52
JA
1471 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1472 /* set up initial handshake for tunneling */
1473 char httpname[1024];
1474 char sessioncookie[17];
1475 char headers[1024];
1476
10ed37b5 1477 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1478 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1479 av_get_random_seed(), av_get_random_seed());
1480
1481 /* GET requests */
6f1b7b39
MS
1482 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1483 &s->interrupt_callback) < 0) {
f5d33f52
JA
1484 err = AVERROR(EIO);
1485 goto fail;
1486 }
1487
1488 /* generate GET headers */
1489 snprintf(headers, sizeof(headers),
1490 "x-sessioncookie: %s\r\n"
1491 "Accept: application/x-rtsp-tunnelled\r\n"
1492 "Pragma: no-cache\r\n"
1493 "Cache-Control: no-cache\r\n",
1494 sessioncookie);
196bf28c 1495 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1496
1497 /* complete the connection */
ddffc2fd 1498 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1499 err = AVERROR(EIO);
1500 goto fail;
1501 }
1502
1503 /* POST requests */
6f1b7b39
MS
1504 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1505 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1506 err = AVERROR(EIO);
1507 goto fail;
1508 }
1509
1510 /* generate POST headers */
1511 snprintf(headers, sizeof(headers),
1512 "x-sessioncookie: %s\r\n"
1513 "Content-Type: application/x-rtsp-tunnelled\r\n"
1514 "Pragma: no-cache\r\n"
1515 "Cache-Control: no-cache\r\n"
1516 "Content-Length: 32767\r\n"
1517 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1518 sessioncookie);
196bf28c 1519 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1520 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1521
a8ead332
MS
1522 /* Initialize the authentication state for the POST session. The HTTP
1523 * protocol implementation doesn't properly handle multi-pass
1524 * authentication for POST requests, since it would require one of
1525 * the following:
1526 * - implementing Expect: 100-continue, which many HTTP servers
1527 * don't support anyway, even less the RTSP servers that do HTTP
1528 * tunneling
1529 * - sending the whole POST data until getting a 401 reply specifying
1530 * what authentication method to use, then resending all that data
1531 * - waiting for potential 401 replies directly after sending the
1532 * POST header (waiting for some unspecified time)
1533 * Therefore, we copy the full auth state, which works for both basic
1534 * and digest. (For digest, we would have to synchronize the nonce
1535 * count variable between the two sessions, if we'd do more requests
1536 * with the original session, though.)
1537 */
1538 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1539
9290f15d 1540 /* complete the connection */
ddffc2fd 1541 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1542 err = AVERROR(EIO);
1543 goto fail;
1544 }
f5d33f52 1545 } else {
48e77473 1546 /* open the tcp connection */
41874d0a 1547 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1548 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1549 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1550 err = AVERROR(EIO);
1551 goto fail;
1552 }
00e4a1f4 1553 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1554 }
53620bba
RB
1555 rt->seq = 0;
1556
1869ea03 1557 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1558 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1559 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1560 NULL, 0, NI_NUMERICHOST);
1561 }
1562
c8965800
RB
1563 /* request options supported by the server; this also detects server
1564 * type */
1cf151e9 1565 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1566 cmd[0] = 0;
2e889ae4 1567 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1568 av_strlcat(cmd,
f75e3da5 1569 /*
1cf151e9
RB
1570 * The following entries are required for proper
1571 * streaming from a Realmedia server. They are
1572 * interdependent in some way although we currently
1573 * don't quite understand how. Values were copied
1574 * from mplayer SVN r23589.
f75e3da5
DB
1575 * ClientChallenge is a 16-byte ID in hex
1576 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1577 */
1578 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1579 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1580 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1581 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1582 sizeof(cmd));
b17d11c6 1583 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1584 if (reply->status_code != RTSP_STATUS_OK) {
1585 err = AVERROR_INVALIDDATA;
1586 goto fail;
1587 }
1588
1589 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1590 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1591 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1592 continue;
bb3244de 1593 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1594 rt->server_type = RTSP_SERVER_WMS;
c8965800 1595 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1596 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1597 break;
1598 }
1599
44b70ce5 1600 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1601 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1602 else if (CONFIG_RTSP_MUXER)
c2688f3a 1603 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1604 if (err)
53620bba 1605 goto fail;
53620bba 1606
8a8754d8 1607 do {
c8965800
RB
1608 int lower_transport = ff_log2_tab[lower_transport_mask &
1609 ~(lower_transport_mask - 1)];
8a8754d8 1610
fef5649a 1611 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1612 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1613 real_challenge : NULL);
8a8754d8 1614 if (err < 0)
7e6ca34f 1615 goto fail;
90abbdba
RB
1616 lower_transport_mask &= ~(1 << lower_transport);
1617 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1618 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1619 goto fail;
1620 }
1621 } while (err);
53620bba 1622
2762a7a2
MS
1623 rt->lower_transport_mask = lower_transport_mask;
1624 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1625 rt->state = RTSP_STATE_IDLE;
c8965800 1626 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1627 return 0;
1628 fail:
3307e6ea 1629 ff_rtsp_close_streams(s);
b8c2c41d 1630 ff_rtsp_close_connections(s);
35cfd646 1631 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1632 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1633 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1634 reply->status_code,
1635 s->filename);
1636 goto redirect;
1637 }
57b5555c 1638 ff_network_close();
1617ad97
FB
1639 return err;
1640}
2e802e38 1641#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1642
44b70ce5 1643#if CONFIG_RTPDEC
0e59034e 1644static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1645 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1646{
1647 RTSPState *rt = s->priv_data;
1648 RTSPStream *rtsp_st;
a8475bbd
LB
1649 int n, i, ret, tcp_fd, timeout_cnt = 0;
1650 int max_p = 0;
1651 struct pollfd *p = rt->p;
0e59034e 1652
c8965800 1653 for (;;) {
9957cdbf 1654 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1655 return AVERROR_EXIT;
321259c1
MS
1656 if (wait_end && wait_end - av_gettime() < 0)
1657 return AVERROR(EAGAIN);
a8475bbd 1658 max_p = 0;
0e59034e 1659 if (rt->rtsp_hd) {
1869ea03 1660 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1661 p[max_p].fd = tcp_fd;
1662 p[max_p++].events = POLLIN;
0e59034e 1663 } else {
0e59034e
RB
1664 tcp_fd = -1;
1665 }
c8965800 1666 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1667 rtsp_st = rt->rtsp_streams[i];
1668 if (rtsp_st->rtp_handle) {
1869ea03 1669 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1670 p[max_p++].events = POLLIN;
bfc6db44 1671 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1672 p[max_p++].events = POLLIN;
0e59034e
RB
1673 }
1674 }
a8475bbd 1675 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1676 if (n > 0) {
a8475bbd 1677 int j = 1 - (tcp_fd == -1);
9cba6f5f 1678 timeout_cnt = 0;
c8965800 1679 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1680 rtsp_st = rt->rtsp_streams[i];
1681 if (rtsp_st->rtp_handle) {
a8475bbd 1682 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1683 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1684 if (ret > 0) {
1685 *prtsp_st = rtsp_st;
1686 return ret;
1687 }
1688 }
a8475bbd 1689 j+=2;
0e59034e
RB
1690 }
1691 }
5fe8021a 1692#if CONFIG_RTSP_DEMUXER
a8475bbd 1693 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1694 RTSPMessageHeader reply;
1695
3df54c6b 1696 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1697 if (ret < 0)
1698 return ret;
0e59034e 1699 /* XXX: parse message */
c02fd3d2 1700 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1701 return 0;
1702 }
5fe8021a 1703#endif
9cba6f5f 1704 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1705 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1706 } else if (n < 0 && errno != EINTR)
1707 return AVERROR(errno);
0e59034e
RB
1708 }
1709}
1710
0526c6f7 1711int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1712{
1713 RTSPState *rt = s->priv_data;
1714 int ret, len;
321259c1
MS
1715 RTSPStream *rtsp_st, *first_queue_st = NULL;
1716 int64_t wait_end = 0;
0e59034e 1717
b20359f5
JA
1718 if (rt->nb_byes == rt->nb_rtsp_streams)
1719 return AVERROR_EOF;
1720
0e59034e
RB
1721 /* get next frames from the same RTP packet */
1722 if (rt->cur_transport_priv) {
c8965800 1723 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1724 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1725 } else
bfc6db44 1726 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1727 if (ret == 0) {
1728 rt->cur_transport_priv = NULL;
1729 return 0;
1730 } else if (ret == 1) {
1731 return 0;
c8965800 1732 } else
0e59034e 1733 rt->cur_transport_priv = NULL;
0e59034e
RB
1734 }
1735
321259c1
MS
1736 if (rt->transport == RTSP_TRANSPORT_RTP) {
1737 int i;
1738 int64_t first_queue_time = 0;
1739 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1740 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1741 int64_t queue_time;
1742 if (!rtpctx)
1743 continue;
1744 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1745 if (queue_time && (queue_time - first_queue_time < 0 ||
1746 !first_queue_time)) {
1747 first_queue_time = queue_time;
1748 first_queue_st = rt->rtsp_streams[i];
1749 }
1750 }
1751 if (first_queue_time)
1752 wait_end = first_queue_time + s->max_delay;
1753 }
1754
0e59034e
RB
1755 /* read next RTP packet */
1756 redo:
96a7c975
MS
1757 if (!rt->recvbuf) {
1758 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1759 if (!rt->recvbuf)
1760 return AVERROR(ENOMEM);
1761 }
1762
0e59034e
RB
1763 switch(rt->lower_transport) {
1764 default:
5fe8021a 1765#if CONFIG_RTSP_DEMUXER
0e59034e 1766 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1767 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1768 break;
5fe8021a 1769#endif
0e59034e
RB
1770 case RTSP_LOWER_TRANSPORT_UDP:
1771 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1772 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1773 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1774 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1775 break;
1776 }
321259c1
MS
1777 if (len == AVERROR(EAGAIN) && first_queue_st &&
1778 rt->transport == RTSP_TRANSPORT_RTP) {
1779 rtsp_st = first_queue_st;
bfc6db44 1780 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1781 goto end;
1782 }
0e59034e
RB
1783 if (len < 0)
1784 return len;
1785 if (len == 0)
1786 return AVERROR_EOF;
c8965800 1787 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1788 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1789 } else {
bfc6db44 1790 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1791 if (ret < 0) {
1792 /* Either bad packet, or a RTCP packet. Check if the
1793 * first_rtcp_ntp_time field was initialized. */
1794 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1795 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1796 /* first_rtcp_ntp_time has been initialized for this stream,
1797 * copy the same value to all other uninitialized streams,
1798 * in order to map their timestamp origin to the same ntp time
1799 * as this one. */
1800 int i;
3a1cdcc7
MS
1801 AVStream *st = NULL;
1802 if (rtsp_st->stream_index >= 0)
1803 st = s->streams[rtsp_st->stream_index];
2cab6b48 1804 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1805 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1806 AVStream *st2 = NULL;
1807 if (rt->rtsp_streams[i]->stream_index >= 0)
1808 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1809 if (rtpctx2 && st && st2 &&
1810 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1811 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1812 rtpctx2->rtcp_ts_offset = av_rescale_q(
1813 rtpctx->rtcp_ts_offset, st->time_base,
1814 st2->time_base);
1815 }
2cab6b48
MS
1816 }
1817 }
b20359f5
JA
1818 if (ret == -RTCP_BYE) {
1819 rt->nb_byes++;
1820
1821 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1822 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1823
1824 if (rt->nb_byes == rt->nb_rtsp_streams)
1825 return AVERROR_EOF;
1826 }
2cab6b48
MS
1827 }
1828 }
321259c1 1829end:
0e59034e
RB
1830 if (ret < 0)
1831 goto redo;
c8965800 1832 if (ret == 1)
0e59034e
RB
1833 /* more packets may follow, so we save the RTP context */
1834 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1835
1836 return ret;
1837}
44b70ce5 1838#endif /* CONFIG_RTPDEC */
0e59034e 1839
44b70ce5 1840#if CONFIG_SDP_DEMUXER
cb1fdc61 1841static int sdp_probe(AVProbeData *p1)
93ced3e8 1842{
0e1ceacd 1843 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1844
3fbd12d1 1845 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1846 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1847 if (p + sizeof("c=IN IP") - 1 < p_end &&
1848 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1849 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1850
c8965800 1851 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1852 if (++p >= p_end)
cb1fdc61 1853 break;
cb1fdc61
FB
1854 if (*p == '\r')
1855 p++;
1856 }
93ced3e8
FB
1857 return 0;
1858}
1859
6e9651d1 1860static int sdp_read_header(AVFormatContext *s)
93ced3e8 1861{
8b1ab7bf 1862 RTSPState *rt = s->priv_data;
93ced3e8
FB
1863 RTSPStream *rtsp_st;
1864 int size, i, err;
1865 char *content;
1866 char url[1024];
1867
57b5555c
MS
1868 if (!ff_network_init())
1869 return AVERROR(EIO);
1870
4fa57d52 1871 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1872 s->max_delay = DEFAULT_REORDERING_DELAY;
4fa57d52 1873
93ced3e8
FB
1874 /* read the whole sdp file */
1875 /* XXX: better loading */
1876 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1877 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1878 if (size <= 0) {
1879 av_free(content);
1880 return AVERROR_INVALIDDATA;
1881 }
1882 content[size] ='\0';
1883
f81c7ac7 1884 err = ff_sdp_parse(s, content);
93ced3e8 1885 av_free(content);
f81c7ac7 1886 if (err) goto fail;
93ced3e8
FB
1887
1888 /* open each RTP stream */
c8965800 1889 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1890 char namebuf[50];
8b1ab7bf 1891 rtsp_st = rt->rtsp_streams[i];
115329f1 1892
3fbd12d1
MS
1893 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1894 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1895 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1896 namebuf, rtsp_st->sdp_port,
51369f28
MS
1897 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1898 rtsp_st->sdp_ttl,
1899 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
6f1b7b39 1900 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1901 &s->interrupt_callback, NULL) < 0) {
93ced3e8
FB
1902 err = AVERROR_INVALIDDATA;
1903 goto fail;
1904 }
ee0cb67f 1905 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1906 goto fail;
93ced3e8
FB
1907 }
1908 return 0;
c8965800 1909fail:
3307e6ea 1910 ff_rtsp_close_streams(s);
57b5555c 1911 ff_network_close();
93ced3e8
FB
1912 return err;
1913}
1914
93ced3e8
FB
1915static int sdp_read_close(AVFormatContext *s)
1916{
3307e6ea 1917 ff_rtsp_close_streams(s);
57b5555c 1918 ff_network_close();
93ced3e8
FB
1919 return 0;
1920}
1921
51369f28
MS
1922static const AVClass sdp_demuxer_class = {
1923 .class_name = "SDP demuxer",
1924 .item_name = av_default_item_name,
1925 .option = sdp_options,
1926 .version = LIBAVUTIL_VERSION_INT,
1927};
1928
c6610a21 1929AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1930 .name = "sdp",
1931 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1932 .priv_data_size = sizeof(RTSPState),
1933 .read_probe = sdp_probe,
1934 .read_header = sdp_read_header,
1935 .read_packet = ff_rtsp_fetch_packet,
1936 .read_close = sdp_read_close,
17934c18 1937 .priv_class = &sdp_demuxer_class,
93ced3e8 1938};
44b70ce5 1939#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1940
44b70ce5 1941#if CONFIG_RTP_DEMUXER
44594cc7
MS
1942static int rtp_probe(AVProbeData *p)
1943{
1944 if (av_strstart(p->filename, "rtp:", NULL))
1945 return AVPROBE_SCORE_MAX;
1946 return 0;
1947}
1948
6e9651d1 1949static int rtp_read_header(AVFormatContext *s)
44594cc7
MS
1950{
1951 uint8_t recvbuf[1500];
1952 char host[500], sdp[500];
1953 int ret, port;
1954 URLContext* in = NULL;
1955 int payload_type;
a92be9b8 1956 AVCodecContext codec = { 0 };
44594cc7 1957 struct sockaddr_storage addr;
ae628ec1 1958 AVIOContext pb;
44594cc7 1959 socklen_t addrlen = sizeof(addr);
30266038 1960 RTSPState *rt = s->priv_data;
44594cc7
MS
1961
1962 if (!ff_network_init())
1963 return AVERROR(EIO);
1964
6f1b7b39 1965 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 1966 &s->interrupt_callback, NULL);
44594cc7
MS
1967 if (ret)
1968 goto fail;
1969
1970 while (1) {
bc371aca 1971 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
1972 if (ret == AVERROR(EAGAIN))
1973 continue;
1974 if (ret < 0)
1975 goto fail;
1976 if (ret < 12) {
1977 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1978 continue;
1979 }
1980
1981 if ((recvbuf[0] & 0xc0) != 0x80) {
1982 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1983 "received\n");
1984 continue;
1985 }
1986
298a587f 1987 if (RTP_PT_IS_RTCP(recvbuf[1]))
f3a094f2
MS
1988 continue;
1989
44594cc7
MS
1990 payload_type = recvbuf[1] & 0x7f;
1991 break;
1992 }
1869ea03 1993 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 1994 ffurl_close(in);
44594cc7
MS
1995 in = NULL;
1996
44594cc7
MS
1997 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1998 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1999 "without an SDP file describing it\n",
2000 payload_type);
2001 goto fail;
2002 }
2003 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
2004 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2005 "properly you need an SDP file "
2006 "describing it\n");
2007 }
2008
2009 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2010 NULL, 0, s->filename);
2011
2012 snprintf(sdp, sizeof(sdp),
2013 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2014 addr.ss_family == AF_INET ? 4 : 6, host,
2015 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
2016 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2017 port, payload_type);
2018 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2019
e731b8d8 2020 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2021 s->pb = &pb;
2022
2023 /* sdp_read_header initializes this again */
2024 ff_network_close();
2025
30266038
MS
2026 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2027
6e9651d1 2028 ret = sdp_read_header(s);
44594cc7
MS
2029 s->pb = NULL;
2030 return ret;
2031
2032fail:
2033 if (in)
e52a9145 2034 ffurl_close(in);
44594cc7
MS
2035 ff_network_close();
2036 return ret;
2037}
2038
51369f28
MS
2039static const AVClass rtp_demuxer_class = {
2040 .class_name = "RTP demuxer",
2041 .item_name = av_default_item_name,
2042 .option = rtp_options,
2043 .version = LIBAVUTIL_VERSION_INT,
2044};
2045
c6610a21 2046AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
2047 .name = "rtp",
2048 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
2049 .priv_data_size = sizeof(RTSPState),
2050 .read_probe = rtp_probe,
2051 .read_header = rtp_read_header,
2052 .read_packet = ff_rtsp_fetch_packet,
2053 .read_close = sdp_read_close,
17934c18
MS
2054 .flags = AVFMT_NOFILE,
2055 .priv_class = &rtp_demuxer_class,
44594cc7 2056};
44b70ce5 2057#endif /* CONFIG_RTP_DEMUXER */