rtsp: Move rtsp_read_close
[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
a8475bbd
LB
33#if HAVE_POLL_H
34#include <poll.h>
6ad1c9c9 35#endif
e4a9e3cc 36#include "internal.h"
42572ef5 37#include "network.h"
cbfa66d0 38#include "os_support.h"
f5d33f52 39#include "http.h"
c971ff19 40#include "rtsp.h"
1617ad97 41
302879cb 42#include "rtpdec.h"
e9dea59f 43#include "rdt.h"
965a3ddb 44#include "rtpdec_formats.h"
a493f80a 45#include "rtpenc_chain.h"
5652bb94 46#include "url.h"
17fff881 47#include "rtpenc.h"
4934884a 48
1617ad97
FB
49//#define DEBUG
50
a8475bbd 51/* Timeout values for socket poll, in ms,
9cba6f5f 52 * and read_packet(), in seconds */
a8475bbd 53#define POLL_TIMEOUT_MS 100
9cba6f5f 54#define READ_PACKET_TIMEOUT_S 10
a8475bbd 55#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 56#define SDP_MAX_SIZE 16384
96a7c975 57#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
ccfa8aa2 58#define DEFAULT_REORDERING_DELAY 100000
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{
a92be9b8 159 struct addrinfo hints = { 0 }, *ai = NULL;
8bf0f969
MS
160 hints.ai_flags = AI_NUMERICHOST;
161 if (getaddrinfo(buf, NULL, &hints, &ai))
162 return -1;
163 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
164 freeaddrinfo(ai);
165 return 0;
166}
167
44b70ce5 168#if CONFIG_RTPDEC
003eb642
MS
169static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
170 RTSPStream *rtsp_st, AVCodecContext *codec)
171{
172 if (!handler)
173 return;
174 codec->codec_id = handler->codec_id;
175 rtsp_st->dynamic_handler = handler;
4b3dc857 176 if (handler->alloc) {
9261e6cf 177 rtsp_st->dynamic_protocol_context = handler->alloc();
4b3dc857
MS
178 if (!rtsp_st->dynamic_protocol_context)
179 rtsp_st->dynamic_handler = NULL;
180 }
003eb642
MS
181}
182
c8965800 183/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 184static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 185 AVStream *st, RTSPStream *rtsp_st,
c8965800 186 int payload_type, const char *p)
93ced3e8 187{
86b6e387 188 AVCodecContext *codec = st->codec;
93ced3e8 189 char buf[256];
d1ccf0e0
RD
190 int i;
191 AVCodec *c;
7b49ce2e 192 const char *c_name;
93ced3e8 193
d1ccf0e0 194 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
195 * see if we can handle this kind of payload.
196 * The space should normally not be there but some Real streams or
197 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
198 * have a trailing space. */
199 get_word_sep(buf, sizeof(buf), "/ ", &p);
6099543a
MS
200 if (payload_type < RTP_PT_PRIVATE) {
201 /* We are in a standard case
202 * (from http://www.iana.org/assignments/rtp-parameters). */
203 /* search into AVRtpPayloadTypes[] */
204 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
205 }
206
207 if (codec->codec_id == CODEC_ID_NONE) {
003eb642
MS
208 RTPDynamicProtocolHandler *handler =
209 ff_rtp_handler_find_by_name(buf, codec->codec_type);
210 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
211 /* If no dynamic handler was found, check with the list of standard
212 * allocated types, if such a stream for some reason happens to
213 * use a private payload type. This isn't handled in rtpdec.c, since
214 * the format name from the rtpmap line never is passed into rtpdec. */
215 if (!rtsp_st->dynamic_handler)
216 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
217 }
218
219 c = avcodec_find_decoder(codec->codec_id);
220 if (c && c->name)
7b49ce2e 221 c_name = c->name;
d1ccf0e0 222 else
170870b7 223 c_name = "(null)";
d1ccf0e0 224
7515ed0c
RB
225 get_word_sep(buf, sizeof(buf), "/", &p);
226 i = atoi(buf);
227 switch (codec->codec_type) {
72415b2a 228 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
229 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
230 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
231 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
232 if (i > 0) {
233 codec->sample_rate = i;
c3f9ebf7 234 avpriv_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
235 get_word_sep(buf, sizeof(buf), "/", &p);
236 i = atoi(buf);
237 if (i > 0)
238 codec->channels = i;
239 // TODO: there is a bug here; if it is a mono stream, and
240 // less than 22000Hz, faad upconverts to stereo and twice
241 // the frequency. No problem, but the sample rate is being
242 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 243 }
7515ed0c
RB
244 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
245 codec->sample_rate);
246 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
247 codec->channels);
248 break;
72415b2a 249 case AVMEDIA_TYPE_VIDEO:
7515ed0c 250 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387 251 if (i > 0)
c3f9ebf7 252 avpriv_set_pts_info(st, 32, 1, i);
7515ed0c
RB
253 break;
254 default:
255 break;
256 }
25836606
MS
257 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init)
258 rtsp_st->dynamic_handler->init(s, st->index,
259 rtsp_st->dynamic_protocol_context);
7515ed0c 260 return 0;
93ced3e8
FB
261}
262
c2bfd816 263/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
264 * is broken out as a function because it is used in rtp_h264.c, which is
265 * forthcoming. */
3307e6ea 266int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 267 char *value, int value_size)
d0deedcb 268{
30619e6e 269 *p += strspn(*p, SPACE_CHARS);
c8965800 270 if (**p) {
d0deedcb
RM
271 get_word_sep(attr, attr_size, "=", p);
272 if (**p == '=')
273 (*p)++;
274 get_word_sep(value, value_size, ";", p);
275 if (**p == ';')
276 (*p)++;
277 return 1;
278 }
279 return 0;
280}
281
93ced3e8
FB
282typedef struct SDPParseState {
283 /* SDP only */
3fbd12d1 284 struct sockaddr_storage default_ip;
c8965800
RB
285 int default_ttl;
286 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
287} SDPParseState;
288
289static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
290 int letter, const char *buf)
291{
8b1ab7bf 292 RTSPState *rt = s->priv_data;
1617ad97
FB
293 char buf1[64], st_type[64];
294 const char *p;
72415b2a 295 enum AVMediaType codec_type;
fb65d2ca 296 int payload_type, i;
1617ad97
FB
297 AVStream *st;
298 RTSPStream *rtsp_st;
3fbd12d1 299 struct sockaddr_storage sdp_ip;
93ced3e8
FB
300 int ttl;
301
dfd2a005 302 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
303
304 p = buf;
cb760a47
RB
305 if (s1->skip_media && letter != 'm')
306 return;
c8965800 307 switch (letter) {
93ced3e8
FB
308 case 'c':
309 get_word(buf1, sizeof(buf1), &p);
310 if (strcmp(buf1, "IN") != 0)
311 return;
312 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 313 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
314 return;
315 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 316 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
317 return;
318 ttl = 16;
319 if (*p == '/') {
320 p++;
321 get_word_sep(buf1, sizeof(buf1), "/", &p);
322 ttl = atoi(buf1);
323 }
324 if (s->nb_streams == 0) {
325 s1->default_ip = sdp_ip;
326 s1->default_ttl = ttl;
327 } else {
d9c0510e 328 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
329 rtsp_st->sdp_ip = sdp_ip;
330 rtsp_st->sdp_ttl = ttl;
331 }
332 break;
1617ad97 333 case 's':
d2d67e42 334 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
335 break;
336 case 'i':
337 if (s->nb_streams == 0) {
d2d67e42 338 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
339 break;
340 }
341 break;
342 case 'm':
343 /* new stream */
cb760a47 344 s1->skip_media = 0;
f011fcd6 345 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
346 get_word(st_type, sizeof(st_type), &p);
347 if (!strcmp(st_type, "audio")) {
72415b2a 348 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 349 } else if (!strcmp(st_type, "video")) {
72415b2a 350 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 351 } else if (!strcmp(st_type, "application")) {
72415b2a 352 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
353 }
354 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 355 s1->skip_media = 1;
1617ad97
FB
356 return;
357 }
1617ad97
FB
358 rtsp_st = av_mallocz(sizeof(RTSPStream));
359 if (!rtsp_st)
360 return;
8b1ab7bf
FB
361 rtsp_st->stream_index = -1;
362 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
363
364 rtsp_st->sdp_ip = s1->default_ip;
365 rtsp_st->sdp_ttl = s1->default_ttl;
366
93ced3e8
FB
367 get_word(buf1, sizeof(buf1), &p); /* port */
368 rtsp_st->sdp_port = atoi(buf1);
369
370 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 371
93ced3e8
FB
372 /* XXX: handle list of formats */
373 get_word(buf1, sizeof(buf1), &p); /* format list */
374 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 375
7ed19d7f 376 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf 377 /* no corresponding stream */
45600148
MS
378 } else if (rt->server_type == RTSP_SERVER_WMS &&
379 codec_type == AVMEDIA_TYPE_DATA) {
380 /* RTX stream, a stream that carries all the other actual
381 * audio/video streams. Don't expose this to the callers. */
8b1ab7bf 382 } else {
84ad31ff 383 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
384 if (!st)
385 return;
84ad31ff 386 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 387 rtsp_st->stream_index = st->index;
01f4895c 388 st->codec->codec_type = codec_type;
d1ccf0e0 389 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 390 RTPDynamicProtocolHandler *handler;
8b1ab7bf 391 /* if standard payload type, we can find the codec right now */
bf6d9818 392 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
393 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
394 st->codec->sample_rate > 0)
c3f9ebf7 395 avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
396 /* Even static payload types may need a custom depacketizer */
397 handler = ff_rtp_handler_find_by_id(
398 rtsp_st->sdp_payload_type, st->codec->codec_type);
399 init_rtp_handler(handler, rtsp_st, st->codec);
25836606
MS
400 if (handler && handler->init)
401 handler->init(s, st->index,
402 rtsp_st->dynamic_protocol_context);
8b1ab7bf
FB
403 }
404 }
1617ad97 405 /* put a default control url */
00eb13e0 406 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 407 sizeof(rtsp_st->control_url));
1617ad97
FB
408 break;
409 case 'a':
00eb13e0
AS
410 if (av_strstart(p, "control:", &p)) {
411 if (s->nb_streams == 0) {
412 if (!strncmp(p, "rtsp://", 7))
413 av_strlcpy(rt->control_uri, p,
414 sizeof(rt->control_uri));
415 } else {
0b6a7ff4
MS
416 char proto[32];
417 /* get the control url */
d9c0510e 418 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 419
0b6a7ff4
MS
420 /* XXX: may need to add full url resolution */
421 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
422 NULL, NULL, 0, p);
423 if (proto[0] == '\0') {
424 /* relative control URL */
425 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
426 av_strlcat(rtsp_st->control_url, "/",
427 sizeof(rtsp_st->control_url));
428 av_strlcat(rtsp_st->control_url, p,
429 sizeof(rtsp_st->control_url));
430 } else
431 av_strlcpy(rtsp_st->control_url, p,
432 sizeof(rtsp_st->control_url));
00eb13e0 433 }
83d14c85 434 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 435 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 436 get_word(buf1, sizeof(buf1), &p);
93ced3e8 437 payload_type = atoi(buf1);
d9c0510e 438 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
45600148
MS
439 if (rtsp_st->stream_index >= 0) {
440 st = s->streams[rtsp_st->stream_index];
441 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
442 }
7fc8ac7f
JA
443 } else if (av_strstart(p, "fmtp:", &p) ||
444 av_strstart(p, "framesize:", &p)) {
93ced3e8 445 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
446 // let dynamic protocol handlers have a stab at the line.
447 get_word(buf1, sizeof(buf1), &p);
448 payload_type = atoi(buf1);
d9c0510e
MS
449 for (i = 0; i < rt->nb_rtsp_streams; i++) {
450 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
451 if (rtsp_st->sdp_payload_type == payload_type &&
452 rtsp_st->dynamic_handler &&
453 rtsp_st->dynamic_handler->parse_sdp_a_line)
454 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
455 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 456 }
c8965800 457 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
458 int64_t start, end;
459
460 // this is so that seeking on a streamed file can work.
461 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
462 s->start_time = start;
463 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
464 s->duration = (end == AV_NOPTS_VALUE) ?
465 AV_NOPTS_VALUE : end - start;
119b4668
RB
466 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
467 if (atoi(p) == 1)
468 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
469 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
470 s->nb_streams > 0) {
471 st = s->streams[s->nb_streams - 1];
472 st->codec->sample_rate = atoi(p);
1a30d541
RB
473 } else {
474 if (rt->server_type == RTSP_SERVER_WMS)
475 ff_wms_parse_sdp_a_line(s, p);
476 if (s->nb_streams > 0) {
45600148
MS
477 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
478
c4a3d032 479 if (rt->server_type == RTSP_SERVER_REAL)
45600148 480 ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
c4a3d032 481
c4a3d032
RB
482 if (rtsp_st->dynamic_handler &&
483 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800 484 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
45600148 485 rtsp_st->stream_index,
c4a3d032 486 rtsp_st->dynamic_protocol_context, buf);
1a30d541 487 }
1617ad97
FB
488 }
489 break;
490 }
491}
492
0526c6f7 493int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 494{
a8475bbd 495 RTSPState *rt = s->priv_data;
1617ad97
FB
496 const char *p;
497 int letter;
9211bcdd
RB
498 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
499 * contain long SDP lines containing complete ASF Headers (several
500 * kB) or arrays of MDPR (RM stream descriptor) headers plus
501 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
502 * buffer is large.
503 *
afcea58c
JA
504 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
505 * in rtpdec_xiph.c. */
373afbaf 506 char buf[16384], *q;
a92be9b8 507 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
115329f1 508
1617ad97 509 p = content;
c8965800 510 for (;;) {
30619e6e 511 p += strspn(p, SPACE_CHARS);
1617ad97
FB
512 letter = *p;
513 if (letter == '\0')
514 break;
515 p++;
516 if (*p != '=')
517 goto next_line;
518 p++;
519 /* get the content */
520 q = buf;
b6892136 521 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
522 if ((q - buf) < sizeof(buf) - 1)
523 *q++ = *p;
524 p++;
525 }
526 *q = '\0';
93ced3e8 527 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
528 next_line:
529 while (*p != '\n' && *p != '\0')
530 p++;
531 if (*p == '\n')
532 p++;
533 }
a8475bbd
LB
534 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
535 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
536 return 0;
537}
44b70ce5 538#endif /* CONFIG_RTPDEC */
1617ad97 539
93e7490e
MS
540void ff_rtsp_undo_setup(AVFormatContext *s)
541{
542 RTSPState *rt = s->priv_data;
543 int i;
544
545 for (i = 0; i < rt->nb_rtsp_streams; i++) {
546 RTSPStream *rtsp_st = rt->rtsp_streams[i];
547 if (!rtsp_st)
548 continue;
549 if (rtsp_st->transport_priv) {
550 if (s->oformat) {
551 AVFormatContext *rtpctx = rtsp_st->transport_priv;
552 av_write_trailer(rtpctx);
553 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
554 uint8_t *ptr;
6dc7d80d 555 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
556 av_free(ptr);
557 } else {
22a3212e 558 avio_close(rtpctx->pb);
93e7490e 559 }
b22dbb29 560 avformat_free_context(rtpctx);
93e7490e
MS
561 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
562 ff_rdt_parse_close(rtsp_st->transport_priv);
563 else if (CONFIG_RTPDEC)
bfc6db44 564 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
565 }
566 rtsp_st->transport_priv = NULL;
567 if (rtsp_st->rtp_handle)
e52a9145 568 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
569 rtsp_st->rtp_handle = NULL;
570 }
571}
572
1ced9da3 573/* close and free RTSP streams */
3307e6ea 574void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 575{
52aa4338 576 RTSPState *rt = s->priv_data;
1ced9da3
LA
577 int i;
578 RTSPStream *rtsp_st;
579
93e7490e 580 ff_rtsp_undo_setup(s);
c8965800 581 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
582 rtsp_st = rt->rtsp_streams[i];
583 if (rtsp_st) {
1ced9da3 584 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 585 rtsp_st->dynamic_handler->free(
c8965800 586 rtsp_st->dynamic_protocol_context);
ea7f0807 587 av_free(rtsp_st);
1ced9da3
LA
588 }
589 }
590 av_free(rt->rtsp_streams);
591 if (rt->asf_ctx) {
cd3716b9 592 avformat_close_input(&rt->asf_ctx);
1ced9da3 593 }
a8475bbd 594 av_free(rt->p);
96a7c975 595 av_free(rt->recvbuf);
1ced9da3
LA
596}
597
c8965800 598static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
599{
600 RTSPState *rt = s->priv_data;
601 AVStream *st = NULL;
602
603 /* open the RTP context */
604 if (rtsp_st->stream_index >= 0)
605 st = s->streams[rtsp_st->stream_index];
606 if (!st)
607 s->ctx_flags |= AVFMTCTX_NOHEADER;
608
44b70ce5 609 if (s->oformat && CONFIG_RTSP_MUXER) {
68c81308
MS
610 int ret = ff_rtp_chain_mux_open(&rtsp_st->transport_priv, s, st,
611 rtsp_st->rtp_handle,
612 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 613 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 614 rtsp_st->rtp_handle = NULL;
68c81308
MS
615 if (ret < 0)
616 return ret;
44b70ce5 617 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
618 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
619 rtsp_st->dynamic_protocol_context,
620 rtsp_st->dynamic_handler);
44b70ce5 621 else if (CONFIG_RTPDEC)
bfc6db44 622 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
623 rtsp_st->sdp_payload_type,
624 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
625 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
626
627 if (!rtsp_st->transport_priv) {
628 return AVERROR(ENOMEM);
44b70ce5 629 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 630 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
631 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
632 rtsp_st->dynamic_protocol_context,
633 rtsp_st->dynamic_handler);
1ced9da3
LA
634 }
635 }
636
637 return 0;
638}
639
6f5a3d0a 640#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
641static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
642{
ddce7dab
MR
643 const char *q;
644 char *p;
1617ad97
FB
645 int v;
646
ddce7dab
MR
647 q = *pp;
648 q += strspn(q, SPACE_CHARS);
649 v = strtol(q, &p, 10);
1617ad97
FB
650 if (*p == '-') {
651 p++;
652 *min_ptr = v;
ddce7dab 653 v = strtol(p, &p, 10);
1617ad97
FB
654 *max_ptr = v;
655 } else {
656 *min_ptr = v;
657 *max_ptr = v;
658 }
659 *pp = p;
660}
661
662/* XXX: only one transport specification is parsed */
a9e534d5 663static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
664{
665 char transport_protocol[16];
666 char profile[16];
667 char lower_transport[16];
668 char parameter[16];
669 RTSPTransportField *th;
670 char buf[256];
115329f1 671
1617ad97 672 reply->nb_transports = 0;
115329f1 673
c8965800 674 for (;;) {
30619e6e 675 p += strspn(p, SPACE_CHARS);
1617ad97
FB
676 if (*p == '\0')
677 break;
678
679 th = &reply->transports[reply->nb_transports];
680
115329f1 681 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 682 "/", &p);
bb3244de 683 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
684 get_word_sep(profile, sizeof(profile), "/;,", &p);
685 lower_transport[0] = '\0';
686 /* rtp/avp/<protocol> */
687 if (*p == '/') {
7ecc634e
LB
688 get_word_sep(lower_transport, sizeof(lower_transport),
689 ";,", &p);
119b4668
RB
690 }
691 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
692 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
693 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 694 /* x-pn-tng/<protocol> */
e1502118
LB
695 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
696 profile[0] = '\0';
119b4668 697 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 698 }
bb3244de 699 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 700 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 701 else
90abbdba 702 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 703
1617ad97
FB
704 if (*p == ';')
705 p++;
706 /* get each parameter */
707 while (*p != '\0' && *p != ',') {
708 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
709 if (!strcmp(parameter, "port")) {
710 if (*p == '=') {
711 p++;
712 rtsp_parse_range(&th->port_min, &th->port_max, &p);
713 }
714 } else if (!strcmp(parameter, "client_port")) {
715 if (*p == '=') {
716 p++;
115329f1 717 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
718 &th->client_port_max, &p);
719 }
720 } else if (!strcmp(parameter, "server_port")) {
721 if (*p == '=') {
722 p++;
115329f1 723 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
724 &th->server_port_max, &p);
725 }
726 } else if (!strcmp(parameter, "interleaved")) {
727 if (*p == '=') {
728 p++;
115329f1 729 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
730 &th->interleaved_max, &p);
731 }
732 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
733 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
734 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
735 } else if (!strcmp(parameter, "ttl")) {
736 if (*p == '=') {
737 p++;
738 th->ttl = strtol(p, (char **)&p, 10);
739 }
740 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
741 if (*p == '=') {
742 p++;
743 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 744 get_sockaddr(buf, &th->destination);
1617ad97 745 }
619298a8
JW
746 } else if (!strcmp(parameter, "source")) {
747 if (*p == '=') {
748 p++;
749 get_word_sep(buf, sizeof(buf), ";,", &p);
750 av_strlcpy(th->source, buf, sizeof(th->source));
751 }
45b06858
JO
752 } else if (!strcmp(parameter, "mode")) {
753 if (*p == '=') {
754 p++;
755 get_word_sep(buf, sizeof(buf), ";, ", &p);
756 if (!strcmp(buf, "record") ||
757 !strcmp(buf, "receive"))
758 th->mode_record = 1;
759 }
1617ad97 760 }
619298a8 761
1617ad97
FB
762 while (*p != ';' && *p != '\0' && *p != ',')
763 p++;
764 if (*p == ';')
765 p++;
766 }
767 if (*p == ',')
768 p++;
769
770 reply->nb_transports++;
771 }
772}
773
29db7c3a
MS
774static void handle_rtp_info(RTSPState *rt, const char *url,
775 uint32_t seq, uint32_t rtptime)
776{
777 int i;
778 if (!rtptime || !url[0])
779 return;
780 if (rt->transport != RTSP_TRANSPORT_RTP)
781 return;
782 for (i = 0; i < rt->nb_rtsp_streams; i++) {
783 RTSPStream *rtsp_st = rt->rtsp_streams[i];
784 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
785 if (!rtpctx)
786 continue;
787 if (!strcmp(rtsp_st->control_url, url)) {
788 rtpctx->base_timestamp = rtptime;
789 break;
790 }
791 }
792}
793
794static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
795{
796 int read = 0;
797 char key[20], value[1024], url[1024] = "";
798 uint32_t seq = 0, rtptime = 0;
799
800 for (;;) {
801 p += strspn(p, SPACE_CHARS);
802 if (!*p)
803 break;
804 get_word_sep(key, sizeof(key), "=", &p);
805 if (*p != '=')
806 break;
807 p++;
808 get_word_sep(value, sizeof(value), ";, ", &p);
809 read++;
810 if (!strcmp(key, "url"))
811 av_strlcpy(url, value, sizeof(url));
812 else if (!strcmp(key, "seq"))
4515f9b5 813 seq = strtoul(value, NULL, 10);
29db7c3a 814 else if (!strcmp(key, "rtptime"))
4515f9b5 815 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
816 if (*p == ',') {
817 handle_rtp_info(rt, url, seq, rtptime);
818 url[0] = '\0';
819 seq = rtptime = 0;
820 read = 0;
821 }
822 if (*p)
823 p++;
824 }
825 if (read > 0)
826 handle_rtp_info(rt, url, seq, rtptime);
827}
828
2626308a 829void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 830 RTSPState *rt, const char *method)
1617ad97
FB
831{
832 const char *p;
833
834 /* NOTE: we do case independent match for broken servers */
835 p = buf;
f7d78f36 836 if (av_stristart(p, "Session:", &p)) {
30e79845 837 int t;
1617ad97 838 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
839 if (av_stristart(p, ";timeout=", &p) &&
840 (t = strtol(p, NULL, 10)) > 0) {
841 reply->timeout = t;
842 }
f7d78f36 843 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 844 reply->content_length = strtol(p, NULL, 10);
f7d78f36 845 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 846 rtsp_parse_transport(reply, p);
f7d78f36 847 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 848 reply->seq = strtol(p, NULL, 10);
f7d78f36 849 } else if (av_stristart(p, "Range:", &p)) {
31693e00 850 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 851 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 852 p += strspn(p, SPACE_CHARS);
30aa6aed 853 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 854 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 855 p += strspn(p, SPACE_CHARS);
7a86bafa 856 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
857 } else if (av_stristart(p, "Notice:", &p) ||
858 av_stristart(p, "X-Notice:", &p)) {
859 reply->notice = strtol(p, NULL, 10);
d243ba30 860 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 861 p += strspn(p, SPACE_CHARS);
d243ba30 862 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 863 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 864 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
865 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
866 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 867 p += strspn(p, SPACE_CHARS);
acc9ed14 868 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 869 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 870 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
871 if (method && !strcmp(method, "DESCRIBE"))
872 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
873 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
874 p += strspn(p, SPACE_CHARS);
875 if (method && !strcmp(method, "PLAY"))
876 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
877 } else if (av_stristart(p, "Public:", &p) && rt) {
878 if (strstr(p, "GET_PARAMETER") &&
879 method && !strcmp(method, "OPTIONS"))
880 rt->get_parameter_supported = 1;
30eae325
MS
881 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
882 p += strspn(p, SPACE_CHARS);
883 rt->accept_dynamic_rate = atoi(p);
fcd0298c
JO
884 } else if (av_stristart(p, "Content-Type:", &p)) {
885 p += strspn(p, SPACE_CHARS);
886 av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1617ad97
FB
887 }
888}
889
b7b8fc34 890/* skip a RTP/TCP interleaved packet */
ec55edba 891void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
892{
893 RTSPState *rt = s->priv_data;
894 int ret, len, len1;
895 uint8_t buf[1024];
896
dce37564 897 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
898 if (ret != 3)
899 return;
80fb8234 900 len = AV_RB16(buf + 1);
67c9cd69 901
dfd2a005 902 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 903
b7b8fc34
FB
904 /* skip payload */
905 while (len > 0) {
906 len1 = len;
907 if (len1 > sizeof(buf))
908 len1 = sizeof(buf);
dce37564 909 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
910 if (ret != len1)
911 return;
912 len -= len1;
913 }
914}
1617ad97 915
3307e6ea 916int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 917 unsigned char **content_ptr,
3df54c6b 918 int return_on_interleaved_data, const char *method)
1617ad97
FB
919{
920 RTSPState *rt = s->priv_data;
921 char buf[4096], buf1[1024], *q;
922 unsigned char ch;
923 const char *p;
1a6b9a98 924 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
925 unsigned char *content = NULL;
926
1a6b9a98
TW
927start:
928 line_count = 0;
929 request = 0;
930 content = NULL;
d541a7d2 931 memset(reply, 0, sizeof(*reply));
1617ad97 932
1617ad97 933 /* parse reply (XXX: use buffers) */
1617ad97 934 rt->last_reply[0] = '\0';
c8965800 935 for (;;) {
1617ad97 936 q = buf;
c8965800 937 for (;;) {
dce37564 938 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 939 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 940 if (ret != 1)
2401660d 941 return AVERROR_EOF;
1617ad97
FB
942 if (ch == '\n')
943 break;
b7b8fc34
FB
944 if (ch == '$') {
945 /* XXX: only parse it if first char on line ? */
7e726132
RB
946 if (return_on_interleaved_data) {
947 return 1;
948 } else
ec55edba 949 ff_rtsp_skip_packet(s);
b7b8fc34 950 } else if (ch != '\r') {
1617ad97
FB
951 if ((q - buf) < sizeof(buf) - 1)
952 *q++ = ch;
953 }
954 }
955 *q = '\0';
67c9cd69 956
dfd2a005 957 av_dlog(s, "line='%s'\n", buf);
67c9cd69 958
1617ad97
FB
959 /* test if last line */
960 if (buf[0] == '\0')
961 break;
962 p = buf;
963 if (line_count == 0) {
964 /* get reply code */
965 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
966 if (!strncmp(buf1, "RTSP/", 5)) {
967 get_word(buf1, sizeof(buf1), &p);
968 reply->status_code = atoi(buf1);
969 av_strlcpy(reply->reason, p, sizeof(reply->reason));
970 } else {
971 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
972 get_word(buf1, sizeof(buf1), &p); // object
973 request = 1;
974 }
1617ad97 975 } else {
77223c53 976 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
977 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
978 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
979 }
980 line_count++;
981 }
115329f1 982
1a6b9a98 983 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 984 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 985
1617ad97
FB
986 content_length = reply->content_length;
987 if (content_length > 0) {
988 /* leave some room for a trailing '\0' (useful for simple parsing) */
989 content = av_malloc(content_length + 1);
dce37564 990 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
991 content[content_length] = '\0';
992 }
993 if (content_ptr)
994 *content_ptr = content;
e2e2e7dd
AB
995 else
996 av_free(content);
7e726132 997
1a6b9a98
TW
998 if (request) {
999 char buf[1024];
1000 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1001 const char* ptr = buf;
1002
1003 if (!strcmp(reply->reason, "OPTIONS")) {
1004 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1005 if (reply->seq)
1006 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1007 if (reply->session_id[0])
1008 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1009 reply->session_id);
1010 } else {
1011 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1012 }
1013 av_strlcat(buf, "\r\n", sizeof(buf));
1014
1015 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1016 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1017 ptr = base64buf;
1018 }
1019 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1020
1021 rt->last_cmd_time = av_gettime();
1022 /* Even if the request from the server had data, it is not the data
1023 * that the caller wants or expects. The memory could also be leaked
1024 * if the actual following reply has content data. */
1025 if (content_ptr)
1026 av_freep(content_ptr);
1027 /* If method is set, this is called from ff_rtsp_send_cmd,
1028 * where a reply to exactly this request is awaited. For
705eeb5e 1029 * callers from within packet receiving, we just want to
1a6b9a98
TW
1030 * return to the caller and go back to receiving packets. */
1031 if (method)
1032 goto start;
1033 return 0;
1034 }
1035
7ed8211b
LB
1036 if (rt->seq != reply->seq) {
1037 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1038 rt->seq, reply->seq);
1039 }
1040
fccb1770
RB
1041 /* EOS */
1042 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1043 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1044 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1045 rt->state = RTSP_STATE_IDLE;
c8965800 1046 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1047 return AVERROR(EIO); /* data or server error */
c8965800 1048 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1049 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1050 return AVERROR(EPERM);
1051
7e726132 1052 return 0;
1617ad97
FB
1053}
1054
57c4d01e
DEP
1055/**
1056 * Send a command to the RTSP server without waiting for the reply.
1057 *
1058 * @param s RTSP (de)muxer context
1059 * @param method the method for the request
1060 * @param url the target url for the request
1061 * @param headers extra header lines to include in the request
1062 * @param send_content if non-null, the data to send as request body content
1063 * @param send_content_length the length of the send_content data, or 0 if
1064 * send_content is null
1065 *
1066 * @return zero if success, nonzero otherwise
1067 */
1068static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1069 const char *method, const char *url,
1070 const char *headers,
1071 const unsigned char *send_content,
1072 int send_content_length)
29b9f58b
RB
1073{
1074 RTSPState *rt = s->priv_data;
f5d33f52
JA
1075 char buf[4096], *out_buf;
1076 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1077
f5d33f52
JA
1078 /* Add in RTSP headers */
1079 out_buf = buf;
29b9f58b 1080 rt->seq++;
b17d11c6
MS
1081 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1082 if (headers)
1083 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1084 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1085 if (rt->session_id[0] != '\0' && (!headers ||
1086 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1087 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1088 }
aa8bf2fb
MS
1089 if (rt->auth[0]) {
1090 char *str = ff_http_auth_create_response(&rt->auth_state,
1091 rt->auth, url, method);
1092 if (str)
1093 av_strlcat(buf, str, sizeof(buf));
1094 av_free(str);
1095 }
dfd017bf
MS
1096 if (send_content_length > 0 && send_content)
1097 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1098 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1099
f5d33f52
JA
1100 /* base64 encode rtsp if tunneling */
1101 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1102 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1103 out_buf = base64buf;
1104 }
1105
dfd2a005 1106 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1107
925e908b 1108 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1109 if (send_content_length > 0 && send_content) {
1110 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1111 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1112 "with content data not supported\n");
1113 return AVERROR_PATCHWELCOME;
1114 }
925e908b 1115 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1116 }
30e79845 1117 rt->last_cmd_time = av_gettime();
d0382374
JA
1118
1119 return 0;
30e79845
RB
1120}
1121
d0382374 1122int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1123 const char *url, const char *headers)
dfd017bf 1124{
d0382374 1125 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1126}
1127
d0382374 1128int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1129 const char *headers, RTSPMessageHeader *reply,
1130 unsigned char **content_ptr)
30e79845 1131{
d0382374 1132 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1133 content_ptr, NULL, 0);
29b9f58b
RB
1134}
1135
d0382374 1136int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1137 const char *method, const char *url,
1138 const char *header,
1139 RTSPMessageHeader *reply,
1140 unsigned char **content_ptr,
1141 const unsigned char *send_content,
1142 int send_content_length)
dfd017bf 1143{
30af0779
MS
1144 RTSPState *rt = s->priv_data;
1145 HTTPAuthType cur_auth_type;
2f96cc1f 1146 int ret, attempts = 0;
30af0779
MS
1147
1148retry:
1149 cur_auth_type = rt->auth_state.auth_type;
d0382374 1150 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1151 send_content,
1152 send_content_length)))
d0382374 1153 return ret;
dfd017bf 1154
3df54c6b 1155 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1156 return ret;
2f96cc1f 1157 attempts++;
30af0779 1158
2f96cc1f
MS
1159 if (reply->status_code == 401 &&
1160 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1161 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1162 goto retry;
d0382374 1163
bf55cf19 1164 if (reply->status_code > 400){
d93fdcbf 1165 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1166 method,
d93fdcbf
LB
1167 reply->status_code,
1168 reply->reason);
bf55cf19
LB
1169 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1170 }
1171
d0382374 1172 return 0;
dfd017bf
MS
1173}
1174
fef5649a 1175int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1176 int lower_transport, const char *real_challenge)
1617ad97
FB
1177{
1178 RTSPState *rt = s->priv_data;
58f09785 1179 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1180 RTSPStream *rtsp_st;
a9e534d5 1181 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1182 char cmd[2048];
e9dea59f
RB
1183 const char *trans_pref;
1184
119b4668 1185 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1186 trans_pref = "x-pn-tng";
1187 else
1188 trans_pref = "RTP/AVP";
115329f1 1189
30e79845
RB
1190 /* default timeout: 1 minute */
1191 rt->timeout = 60;
1192
1617ad97
FB
1193 /* for each stream, make the setup request */
1194 /* XXX: we assume the same server is used for the control of each
c8965800 1195 * RTSP stream */
d1ccf0e0 1196
58f09785
DV
1197 /* Choose a random starting offset within the first half of the
1198 * port range, to allow for a number of ports to try even if the offset
1199 * happens to be at the end of the random range. */
1200 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1201 /* even random offset */
1202 port_off -= port_off & 0x01;
1203
1204 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1205 char transport[2048];
1206
f75e3da5 1207 /*
f830c9a4
RB
1208 * WMS serves all UDP data over a single connection, the RTX, which
1209 * isn't necessarily the first in the SDP but has to be the first
1210 * to be set up, else the second/third SETUP will fail with a 461.
1211 */
1212 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1213 rt->server_type == RTSP_SERVER_WMS) {
1214 if (i == 0) {
1215 /* rtx first */
1216 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1217 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1218 if (len >= 4 &&
c8965800
RB
1219 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1220 "/rtx"))
f830c9a4
RB
1221 break;
1222 }
1223 if (rtx == rt->nb_rtsp_streams)
1224 return -1; /* no RTX found */
1225 rtsp_st = rt->rtsp_streams[rtx];
1226 } else
1227 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1228 } else
2fea9650 1229 rtsp_st = rt->rtsp_streams[i];
1617ad97 1230
1617ad97 1231 /* RTP/UDP */
90abbdba 1232 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1233 char buf[256];
85fb7b34 1234
f830c9a4
RB
1235 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1236 port = reply->transports[0].client_port_min;
1237 goto have_port;
1238 }
1239
85fb7b34 1240 /* first try in specified port range */
dbb06b8c 1241 while (j <= rt->rtp_port_max) {
bc495bad
DV
1242 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1243 "?localport=%d", j);
1244 /* we will use two ports per rtp stream (rtp and rtcp) */
1245 j += 2;
1246 if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1247 &s->interrupt_callback, NULL))
1248 goto rtp_opened;
1617ad97 1249 }
85fb7b34 1250
a3b058b7
MS
1251 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1252 err = AVERROR(EIO);
1253 goto fail;
85fb7b34
FB
1254
1255 rtp_opened:
bfc6db44 1256 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1257 have_port:
0ad306bc 1258 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1259 "%s/UDP;", trans_pref);
1260 if (rt->server_type != RTSP_SERVER_REAL)
1261 av_strlcat(transport, "unicast;", sizeof(transport));
1262 av_strlcatf(transport, sizeof(transport),
1263 "client_port=%d", port);
f830c9a4
RB
1264 if (rt->transport == RTSP_TRANSPORT_RTP &&
1265 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1266 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1267 }
1268
1269 /* RTP/TCP */
90abbdba 1270 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1271 /* For WMS streams, the application streams are only used for
090438cc
RB
1272 * UDP. When trying to set it up for TCP streams, the server
1273 * will return an error. Therefore, we skip those streams. */
1274 if (rt->server_type == RTSP_SERVER_WMS &&
45600148
MS
1275 (rtsp_st->stream_index < 0 ||
1276 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1277 AVMEDIA_TYPE_DATA))
090438cc 1278 continue;
0ad306bc 1279 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1280 "%s/TCP;", trans_pref);
895678f8 1281 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1282 av_strlcat(transport, "unicast;", sizeof(transport));
1283 av_strlcatf(transport, sizeof(transport),
1284 "interleaved=%d-%d",
1285 interleave, interleave + 1);
1286 interleave += 2;
1617ad97
FB
1287 }
1288
90abbdba 1289 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1290 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1291 "%s/UDP;multicast", trans_pref);
1617ad97 1292 }
69adcc4f 1293 if (s->oformat) {
bbc80386 1294 av_strlcat(transport, ";mode=record", sizeof(transport));
69adcc4f 1295 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1296 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1297 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1298 snprintf(cmd, sizeof(cmd),
b6892136 1299 "Transport: %s\r\n",
b17d11c6 1300 transport);
76b0d03d
MS
1301 if (rt->accept_dynamic_rate)
1302 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1303 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1304 char real_res[41], real_csum[9];
1305 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1306 real_challenge);
1307 av_strlcatf(cmd, sizeof(cmd),
1308 "If-Match: %s\r\n"
1309 "RealChallenge2: %s, sd=%s\r\n",
1310 rt->session_id, real_res, real_csum);
1311 }
b17d11c6 1312 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1313 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1314 err = 1;
1315 goto fail;
7e6ca34f
RB
1316 } else if (reply->status_code != RTSP_STATUS_OK ||
1317 reply->nb_transports != 1) {
1617ad97
FB
1318 err = AVERROR_INVALIDDATA;
1319 goto fail;
1320 }
1321
1322 /* XXX: same protocol for all streams is required */
1323 if (i > 0) {
119b4668
RB
1324 if (reply->transports[0].lower_transport != rt->lower_transport ||
1325 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1326 err = AVERROR_INVALIDDATA;
1327 goto fail;
1328 }
1329 } else {
90abbdba 1330 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1331 rt->transport = reply->transports[0].transport;
1617ad97
FB
1332 }
1333
8c579c1c
MS
1334 /* Fail if the server responded with another lower transport mode
1335 * than what we requested. */
1336 if (reply->transports[0].lower_transport != lower_transport) {
1337 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1338 err = AVERROR_INVALIDDATA;
1339 goto fail;
1617ad97
FB
1340 }
1341
90abbdba
RB
1342 switch(reply->transports[0].lower_transport) {
1343 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1344 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1345 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1346 break;
115329f1 1347
c8965800 1348 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1349 char url[1024], options[30] = "";
c8965800 1350
9867aea5 1351 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1352 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1353 /* Use source address if specified */
1354 if (reply->transports[0].source[0]) {
1355 ff_url_join(url, sizeof(url), "rtp", NULL,
1356 reply->transports[0].source,
d8407339 1357 reply->transports[0].server_port_min, "%s", options);
619298a8 1358 } else {
7bac991f 1359 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1360 reply->transports[0].server_port_min, "%s", options);
619298a8 1361 }
c8965800 1362 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1363 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1364 err = AVERROR_INVALIDDATA;
1365 goto fail;
1617ad97 1366 }
9c8fa20d
MS
1367 /* Try to initialize the connection state in a
1368 * potential NAT router by sending dummy packets.
1369 * RTP/RTCP dummy packets are used for RDT, too.
1370 */
44b70ce5
MS
1371 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1372 CONFIG_RTPDEC)
bfc6db44 1373 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1374 break;
c8965800
RB
1375 }
1376 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1377 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1378 struct sockaddr_storage addr;
c8965800
RB
1379 int port, ttl;
1380
7934b15d
MS
1381 if (reply->transports[0].destination.ss_family) {
1382 addr = reply->transports[0].destination;
c8965800
RB
1383 port = reply->transports[0].port_min;
1384 ttl = reply->transports[0].ttl;
1385 } else {
7934b15d 1386 addr = rtsp_st->sdp_ip;
c8965800
RB
1387 port = rtsp_st->sdp_port;
1388 ttl = rtsp_st->sdp_ttl;
1389 }
6294d708
MS
1390 if (ttl > 0)
1391 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1392 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1393 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1394 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1395 port, "%s", optbuf);
6f1b7b39 1396 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1397 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1398 err = AVERROR_INVALIDDATA;
1399 goto fail;
1617ad97
FB
1400 }
1401 break;
1402 }
c8965800 1403 }
d1ccf0e0 1404
ee0cb67f 1405 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1406 goto fail;
1617ad97
FB
1407 }
1408
62c3c8ca 1409 if (rt->nb_rtsp_streams && reply->timeout > 0)
30e79845
RB
1410 rt->timeout = reply->timeout;
1411
2e889ae4 1412 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1413 rt->need_subscription = 1;
1414
53620bba
RB
1415 return 0;
1416
1417fail:
aeb2de1c 1418 ff_rtsp_undo_setup(s);
53620bba
RB
1419 return err;
1420}
1421
b8c2c41d
JA
1422void ff_rtsp_close_connections(AVFormatContext *s)
1423{
1424 RTSPState *rt = s->priv_data;
e52a9145
AK
1425 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1426 ffurl_close(rt->rtsp_hd);
6217b645 1427 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1428}
1429
3307e6ea 1430int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1431{
1432 RTSPState *rt = s->priv_data;
921da217 1433 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
03f8fc08 1434 int port, err, tcp_fd;
354b7573 1435 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1436 int lower_transport_mask = 0;
2762a7a2 1437 char real_challenge[64] = "";
03f8fc08
MS
1438 struct sockaddr_storage peer;
1439 socklen_t peer_len = sizeof(peer);
57b5555c 1440
dbb06b8c
MS
1441 if (rt->rtp_port_max < rt->rtp_port_min) {
1442 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1443 "than min port %d\n", rt->rtp_port_max,
1444 rt->rtp_port_min);
1445 return AVERROR(EINVAL);
1446 }
1447
57b5555c
MS
1448 if (!ff_network_init())
1449 return AVERROR(EIO);
eca4850c 1450
4fa57d52 1451 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1452 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
4fa57d52 1453
f5d33f52 1454 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1455 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1456 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1457 rt->control_transport = RTSP_MODE_TUNNEL;
1458 }
1459 /* Only pass through valid flags from here */
1460 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1461
1462redirect:
1463 lower_transport_mask = rt->lower_transport_mask;
53620bba 1464 /* extract hostname and port */
f3bfe388 1465 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1466 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1467 if (*auth) {
aa8bf2fb 1468 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1469 }
53620bba
RB
1470 if (port < 0)
1471 port = RTSP_DEFAULT_PORT;
1472
90abbdba 1473 if (!lower_transport_mask)
2a1d51c5 1474 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1475
3e24c770 1476 if (s->oformat) {
b7dc88fc
MS
1477 /* Only UDP or TCP - UDP multicast isn't supported. */
1478 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1479 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1480 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1481 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1482 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1483 err = AVERROR(EINVAL);
1484 goto fail;
1485 }
1486 }
1487
4bc5cc23
MS
1488 /* Construct the URI used in request; this is similar to s->filename,
1489 * but with authentication credentials removed and RTSP specific options
1490 * stripped out. */
1491 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1492 host, port, "%s", path);
1493
f5d33f52
JA
1494 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1495 /* set up initial handshake for tunneling */
1496 char httpname[1024];
1497 char sessioncookie[17];
1498 char headers[1024];
1499
10ed37b5 1500 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1501 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1502 av_get_random_seed(), av_get_random_seed());
1503
1504 /* GET requests */
6f1b7b39
MS
1505 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1506 &s->interrupt_callback) < 0) {
f5d33f52
JA
1507 err = AVERROR(EIO);
1508 goto fail;
1509 }
1510
1511 /* generate GET headers */
1512 snprintf(headers, sizeof(headers),
1513 "x-sessioncookie: %s\r\n"
1514 "Accept: application/x-rtsp-tunnelled\r\n"
1515 "Pragma: no-cache\r\n"
1516 "Cache-Control: no-cache\r\n",
1517 sessioncookie);
196bf28c 1518 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1519
1520 /* complete the connection */
ddffc2fd 1521 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1522 err = AVERROR(EIO);
1523 goto fail;
1524 }
1525
1526 /* POST requests */
6f1b7b39
MS
1527 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1528 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1529 err = AVERROR(EIO);
1530 goto fail;
1531 }
1532
1533 /* generate POST headers */
1534 snprintf(headers, sizeof(headers),
1535 "x-sessioncookie: %s\r\n"
1536 "Content-Type: application/x-rtsp-tunnelled\r\n"
1537 "Pragma: no-cache\r\n"
1538 "Cache-Control: no-cache\r\n"
1539 "Content-Length: 32767\r\n"
1540 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1541 sessioncookie);
196bf28c 1542 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1543 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1544
a8ead332
MS
1545 /* Initialize the authentication state for the POST session. The HTTP
1546 * protocol implementation doesn't properly handle multi-pass
1547 * authentication for POST requests, since it would require one of
1548 * the following:
1549 * - implementing Expect: 100-continue, which many HTTP servers
1550 * don't support anyway, even less the RTSP servers that do HTTP
1551 * tunneling
1552 * - sending the whole POST data until getting a 401 reply specifying
1553 * what authentication method to use, then resending all that data
1554 * - waiting for potential 401 replies directly after sending the
1555 * POST header (waiting for some unspecified time)
1556 * Therefore, we copy the full auth state, which works for both basic
1557 * and digest. (For digest, we would have to synchronize the nonce
1558 * count variable between the two sessions, if we'd do more requests
1559 * with the original session, though.)
1560 */
1561 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1562
9290f15d 1563 /* complete the connection */
ddffc2fd 1564 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1565 err = AVERROR(EIO);
1566 goto fail;
1567 }
f5d33f52 1568 } else {
48e77473 1569 /* open the tcp connection */
41874d0a 1570 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1571 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1572 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1573 err = AVERROR(EIO);
1574 goto fail;
1575 }
00e4a1f4 1576 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1577 }
53620bba
RB
1578 rt->seq = 0;
1579
1869ea03 1580 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1581 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1582 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1583 NULL, 0, NI_NUMERICHOST);
1584 }
1585
c8965800
RB
1586 /* request options supported by the server; this also detects server
1587 * type */
1cf151e9 1588 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1589 cmd[0] = 0;
2e889ae4 1590 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1591 av_strlcat(cmd,
f75e3da5 1592 /*
1cf151e9
RB
1593 * The following entries are required for proper
1594 * streaming from a Realmedia server. They are
1595 * interdependent in some way although we currently
1596 * don't quite understand how. Values were copied
1597 * from mplayer SVN r23589.
f75e3da5
DB
1598 * ClientChallenge is a 16-byte ID in hex
1599 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1600 */
1601 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1602 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1603 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1604 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1605 sizeof(cmd));
b17d11c6 1606 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1607 if (reply->status_code != RTSP_STATUS_OK) {
1608 err = AVERROR_INVALIDDATA;
1609 goto fail;
1610 }
1611
1612 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1613 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1614 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1615 continue;
bb3244de 1616 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1617 rt->server_type = RTSP_SERVER_WMS;
c8965800 1618 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1619 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1620 break;
1621 }
1622
44b70ce5 1623 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1624 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1625 else if (CONFIG_RTSP_MUXER)
c2688f3a 1626 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1627 if (err)
53620bba 1628 goto fail;
53620bba 1629
8a8754d8 1630 do {
c8965800
RB
1631 int lower_transport = ff_log2_tab[lower_transport_mask &
1632 ~(lower_transport_mask - 1)];
8a8754d8 1633
fef5649a 1634 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1635 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1636 real_challenge : NULL);
8a8754d8 1637 if (err < 0)
7e6ca34f 1638 goto fail;
90abbdba
RB
1639 lower_transport_mask &= ~(1 << lower_transport);
1640 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1641 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1642 goto fail;
1643 }
1644 } while (err);
53620bba 1645
2762a7a2
MS
1646 rt->lower_transport_mask = lower_transport_mask;
1647 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1648 rt->state = RTSP_STATE_IDLE;
c8965800 1649 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1650 return 0;
1651 fail:
3307e6ea 1652 ff_rtsp_close_streams(s);
b8c2c41d 1653 ff_rtsp_close_connections(s);
35cfd646 1654 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1655 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1656 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1657 reply->status_code,
1658 s->filename);
1659 goto redirect;
1660 }
57b5555c 1661 ff_network_close();
1617ad97
FB
1662 return err;
1663}
2e802e38 1664#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1665
44b70ce5 1666#if CONFIG_RTPDEC
0e59034e 1667static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1668 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1669{
1670 RTSPState *rt = s->priv_data;
1671 RTSPStream *rtsp_st;
a8475bbd
LB
1672 int n, i, ret, tcp_fd, timeout_cnt = 0;
1673 int max_p = 0;
1674 struct pollfd *p = rt->p;
0e59034e 1675
c8965800 1676 for (;;) {
9957cdbf 1677 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1678 return AVERROR_EXIT;
321259c1
MS
1679 if (wait_end && wait_end - av_gettime() < 0)
1680 return AVERROR(EAGAIN);
a8475bbd 1681 max_p = 0;
0e59034e 1682 if (rt->rtsp_hd) {
1869ea03 1683 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1684 p[max_p].fd = tcp_fd;
1685 p[max_p++].events = POLLIN;
0e59034e 1686 } else {
0e59034e
RB
1687 tcp_fd = -1;
1688 }
c8965800 1689 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1690 rtsp_st = rt->rtsp_streams[i];
1691 if (rtsp_st->rtp_handle) {
1869ea03 1692 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1693 p[max_p++].events = POLLIN;
bfc6db44 1694 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1695 p[max_p++].events = POLLIN;
0e59034e
RB
1696 }
1697 }
a8475bbd 1698 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1699 if (n > 0) {
a8475bbd 1700 int j = 1 - (tcp_fd == -1);
9cba6f5f 1701 timeout_cnt = 0;
c8965800 1702 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1703 rtsp_st = rt->rtsp_streams[i];
1704 if (rtsp_st->rtp_handle) {
a8475bbd 1705 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1706 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1707 if (ret > 0) {
1708 *prtsp_st = rtsp_st;
1709 return ret;
1710 }
1711 }
a8475bbd 1712 j+=2;
0e59034e
RB
1713 }
1714 }
5fe8021a 1715#if CONFIG_RTSP_DEMUXER
a8475bbd 1716 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1717 RTSPMessageHeader reply;
1718
3df54c6b 1719 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1720 if (ret < 0)
1721 return ret;
0e59034e 1722 /* XXX: parse message */
c02fd3d2 1723 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1724 return 0;
1725 }
5fe8021a 1726#endif
9cba6f5f 1727 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1728 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1729 } else if (n < 0 && errno != EINTR)
1730 return AVERROR(errno);
0e59034e
RB
1731 }
1732}
1733
0526c6f7 1734int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1735{
1736 RTSPState *rt = s->priv_data;
1737 int ret, len;
321259c1
MS
1738 RTSPStream *rtsp_st, *first_queue_st = NULL;
1739 int64_t wait_end = 0;
0e59034e 1740
b20359f5
JA
1741 if (rt->nb_byes == rt->nb_rtsp_streams)
1742 return AVERROR_EOF;
1743
0e59034e
RB
1744 /* get next frames from the same RTP packet */
1745 if (rt->cur_transport_priv) {
c8965800 1746 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1747 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1748 } else
bfc6db44 1749 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1750 if (ret == 0) {
1751 rt->cur_transport_priv = NULL;
1752 return 0;
1753 } else if (ret == 1) {
1754 return 0;
c8965800 1755 } else
0e59034e 1756 rt->cur_transport_priv = NULL;
0e59034e
RB
1757 }
1758
321259c1
MS
1759 if (rt->transport == RTSP_TRANSPORT_RTP) {
1760 int i;
1761 int64_t first_queue_time = 0;
1762 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1763 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1764 int64_t queue_time;
1765 if (!rtpctx)
1766 continue;
1767 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1768 if (queue_time && (queue_time - first_queue_time < 0 ||
1769 !first_queue_time)) {
1770 first_queue_time = queue_time;
1771 first_queue_st = rt->rtsp_streams[i];
1772 }
1773 }
1774 if (first_queue_time)
1775 wait_end = first_queue_time + s->max_delay;
1776 }
1777
0e59034e
RB
1778 /* read next RTP packet */
1779 redo:
96a7c975
MS
1780 if (!rt->recvbuf) {
1781 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1782 if (!rt->recvbuf)
1783 return AVERROR(ENOMEM);
1784 }
1785
0e59034e
RB
1786 switch(rt->lower_transport) {
1787 default:
5fe8021a 1788#if CONFIG_RTSP_DEMUXER
0e59034e 1789 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1790 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1791 break;
5fe8021a 1792#endif
0e59034e
RB
1793 case RTSP_LOWER_TRANSPORT_UDP:
1794 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1795 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1796 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1797 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1798 break;
1799 }
321259c1
MS
1800 if (len == AVERROR(EAGAIN) && first_queue_st &&
1801 rt->transport == RTSP_TRANSPORT_RTP) {
1802 rtsp_st = first_queue_st;
bfc6db44 1803 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1804 goto end;
1805 }
0e59034e
RB
1806 if (len < 0)
1807 return len;
1808 if (len == 0)
1809 return AVERROR_EOF;
c8965800 1810 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1811 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1812 } else {
bfc6db44 1813 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1814 if (ret < 0) {
1815 /* Either bad packet, or a RTCP packet. Check if the
1816 * first_rtcp_ntp_time field was initialized. */
1817 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1818 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1819 /* first_rtcp_ntp_time has been initialized for this stream,
1820 * copy the same value to all other uninitialized streams,
1821 * in order to map their timestamp origin to the same ntp time
1822 * as this one. */
1823 int i;
3a1cdcc7
MS
1824 AVStream *st = NULL;
1825 if (rtsp_st->stream_index >= 0)
1826 st = s->streams[rtsp_st->stream_index];
2cab6b48 1827 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1828 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1829 AVStream *st2 = NULL;
1830 if (rt->rtsp_streams[i]->stream_index >= 0)
1831 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1832 if (rtpctx2 && st && st2 &&
1833 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1834 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1835 rtpctx2->rtcp_ts_offset = av_rescale_q(
1836 rtpctx->rtcp_ts_offset, st->time_base,
1837 st2->time_base);
1838 }
2cab6b48
MS
1839 }
1840 }
b20359f5
JA
1841 if (ret == -RTCP_BYE) {
1842 rt->nb_byes++;
1843
1844 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1845 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1846
1847 if (rt->nb_byes == rt->nb_rtsp_streams)
1848 return AVERROR_EOF;
1849 }
2cab6b48
MS
1850 }
1851 }
321259c1 1852end:
0e59034e
RB
1853 if (ret < 0)
1854 goto redo;
c8965800 1855 if (ret == 1)
0e59034e
RB
1856 /* more packets may follow, so we save the RTP context */
1857 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1858
1859 return ret;
1860}
44b70ce5 1861#endif /* CONFIG_RTPDEC */
0e59034e 1862
44b70ce5 1863#if CONFIG_SDP_DEMUXER
cb1fdc61 1864static int sdp_probe(AVProbeData *p1)
93ced3e8 1865{
0e1ceacd 1866 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1867
3fbd12d1 1868 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1869 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1870 if (p + sizeof("c=IN IP") - 1 < p_end &&
1871 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1872 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1873
c8965800 1874 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1875 if (++p >= p_end)
cb1fdc61 1876 break;
cb1fdc61
FB
1877 if (*p == '\r')
1878 p++;
1879 }
93ced3e8
FB
1880 return 0;
1881}
1882
6e9651d1 1883static int sdp_read_header(AVFormatContext *s)
93ced3e8 1884{
8b1ab7bf 1885 RTSPState *rt = s->priv_data;
93ced3e8
FB
1886 RTSPStream *rtsp_st;
1887 int size, i, err;
1888 char *content;
1889 char url[1024];
1890
57b5555c
MS
1891 if (!ff_network_init())
1892 return AVERROR(EIO);
1893
4fa57d52 1894 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1895 s->max_delay = DEFAULT_REORDERING_DELAY;
4fa57d52 1896
93ced3e8
FB
1897 /* read the whole sdp file */
1898 /* XXX: better loading */
1899 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1900 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1901 if (size <= 0) {
1902 av_free(content);
1903 return AVERROR_INVALIDDATA;
1904 }
1905 content[size] ='\0';
1906
f81c7ac7 1907 err = ff_sdp_parse(s, content);
93ced3e8 1908 av_free(content);
f81c7ac7 1909 if (err) goto fail;
93ced3e8
FB
1910
1911 /* open each RTP stream */
c8965800 1912 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1913 char namebuf[50];
8b1ab7bf 1914 rtsp_st = rt->rtsp_streams[i];
115329f1 1915
3fbd12d1
MS
1916 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1917 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1918 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1919 namebuf, rtsp_st->sdp_port,
51369f28
MS
1920 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1921 rtsp_st->sdp_ttl,
1922 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
6f1b7b39 1923 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1924 &s->interrupt_callback, NULL) < 0) {
93ced3e8
FB
1925 err = AVERROR_INVALIDDATA;
1926 goto fail;
1927 }
ee0cb67f 1928 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1929 goto fail;
93ced3e8
FB
1930 }
1931 return 0;
c8965800 1932fail:
3307e6ea 1933 ff_rtsp_close_streams(s);
57b5555c 1934 ff_network_close();
93ced3e8
FB
1935 return err;
1936}
1937
93ced3e8
FB
1938static int sdp_read_close(AVFormatContext *s)
1939{
3307e6ea 1940 ff_rtsp_close_streams(s);
57b5555c 1941 ff_network_close();
93ced3e8
FB
1942 return 0;
1943}
1944
51369f28
MS
1945static const AVClass sdp_demuxer_class = {
1946 .class_name = "SDP demuxer",
1947 .item_name = av_default_item_name,
1948 .option = sdp_options,
1949 .version = LIBAVUTIL_VERSION_INT,
1950};
1951
c6610a21 1952AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1953 .name = "sdp",
1954 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1955 .priv_data_size = sizeof(RTSPState),
1956 .read_probe = sdp_probe,
1957 .read_header = sdp_read_header,
1958 .read_packet = ff_rtsp_fetch_packet,
1959 .read_close = sdp_read_close,
17934c18 1960 .priv_class = &sdp_demuxer_class,
93ced3e8 1961};
44b70ce5 1962#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1963
44b70ce5 1964#if CONFIG_RTP_DEMUXER
44594cc7
MS
1965static int rtp_probe(AVProbeData *p)
1966{
1967 if (av_strstart(p->filename, "rtp:", NULL))
1968 return AVPROBE_SCORE_MAX;
1969 return 0;
1970}
1971
6e9651d1 1972static int rtp_read_header(AVFormatContext *s)
44594cc7
MS
1973{
1974 uint8_t recvbuf[1500];
1975 char host[500], sdp[500];
1976 int ret, port;
1977 URLContext* in = NULL;
1978 int payload_type;
a92be9b8 1979 AVCodecContext codec = { 0 };
44594cc7 1980 struct sockaddr_storage addr;
ae628ec1 1981 AVIOContext pb;
44594cc7 1982 socklen_t addrlen = sizeof(addr);
30266038 1983 RTSPState *rt = s->priv_data;
44594cc7
MS
1984
1985 if (!ff_network_init())
1986 return AVERROR(EIO);
1987
6f1b7b39 1988 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 1989 &s->interrupt_callback, NULL);
44594cc7
MS
1990 if (ret)
1991 goto fail;
1992
1993 while (1) {
bc371aca 1994 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
1995 if (ret == AVERROR(EAGAIN))
1996 continue;
1997 if (ret < 0)
1998 goto fail;
1999 if (ret < 12) {
2000 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2001 continue;
2002 }
2003
2004 if ((recvbuf[0] & 0xc0) != 0x80) {
2005 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2006 "received\n");
2007 continue;
2008 }
2009
298a587f 2010 if (RTP_PT_IS_RTCP(recvbuf[1]))
f3a094f2
MS
2011 continue;
2012
44594cc7
MS
2013 payload_type = recvbuf[1] & 0x7f;
2014 break;
2015 }
1869ea03 2016 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 2017 ffurl_close(in);
44594cc7
MS
2018 in = NULL;
2019
44594cc7
MS
2020 if (ff_rtp_get_codec_info(&codec, payload_type)) {
2021 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2022 "without an SDP file describing it\n",
2023 payload_type);
2024 goto fail;
2025 }
2026 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
2027 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2028 "properly you need an SDP file "
2029 "describing it\n");
2030 }
2031
2032 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2033 NULL, 0, s->filename);
2034
2035 snprintf(sdp, sizeof(sdp),
2036 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2037 addr.ss_family == AF_INET ? 4 : 6, host,
2038 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
2039 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2040 port, payload_type);
2041 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2042
e731b8d8 2043 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2044 s->pb = &pb;
2045
2046 /* sdp_read_header initializes this again */
2047 ff_network_close();
2048
30266038
MS
2049 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2050
6e9651d1 2051 ret = sdp_read_header(s);
44594cc7
MS
2052 s->pb = NULL;
2053 return ret;
2054
2055fail:
2056 if (in)
e52a9145 2057 ffurl_close(in);
44594cc7
MS
2058 ff_network_close();
2059 return ret;
2060}
2061
51369f28
MS
2062static const AVClass rtp_demuxer_class = {
2063 .class_name = "RTP demuxer",
2064 .item_name = av_default_item_name,
2065 .option = rtp_options,
2066 .version = LIBAVUTIL_VERSION_INT,
2067};
2068
c6610a21 2069AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
2070 .name = "rtp",
2071 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
2072 .priv_data_size = sizeof(RTSPState),
2073 .read_probe = rtp_probe,
2074 .read_header = rtp_read_header,
2075 .read_packet = ff_rtsp_fetch_packet,
2076 .read_close = sdp_read_close,
17934c18
MS
2077 .flags = AVFMT_NOFILE,
2078 .priv_class = &rtp_demuxer_class,
44594cc7 2079};
44b70ce5 2080#endif /* CONFIG_RTP_DEMUXER */