rtsp: Merge the AVOption lists
[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"
1617ad97 29#include "avformat.h"
e731b8d8 30#include "avio_internal.h"
1617ad97 31
db0ed93e 32#include <sys/time.h>
a8475bbd
LB
33#if HAVE_POLL_H
34#include <poll.h>
6ad1c9c9 35#endif
ea452b54 36#include <strings.h>
e4a9e3cc 37#include "internal.h"
42572ef5 38#include "network.h"
cbfa66d0 39#include "os_support.h"
f5d33f52 40#include "http.h"
c971ff19 41#include "rtsp.h"
1617ad97 42
302879cb 43#include "rtpdec.h"
e9dea59f 44#include "rdt.h"
965a3ddb 45#include "rtpdec_formats.h"
a493f80a 46#include "rtpenc_chain.h"
5652bb94 47#include "url.h"
17fff881 48#include "rtpenc.h"
4934884a 49
1617ad97
FB
50//#define DEBUG
51
a8475bbd 52/* Timeout values for socket poll, in ms,
9cba6f5f 53 * and read_packet(), in seconds */
a8475bbd 54#define POLL_TIMEOUT_MS 100
9cba6f5f 55#define READ_PACKET_TIMEOUT_S 10
a8475bbd 56#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 57#define SDP_MAX_SIZE 16384
96a7c975 58#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
9cba6f5f 59
17fff881
MS
60const AVOption ff_rtsp_options[] = {
61 { "initial_pause", "Don't start playing the stream immediately", offsetof(RTSPState, initial_pause), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
62 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
63 { NULL },
64};
65
1ef36a70
RB
66static void get_word_until_chars(char *buf, int buf_size,
67 const char *sep, const char **pp)
1617ad97
FB
68{
69 const char *p;
70 char *q;
71
72 p = *pp;
30619e6e 73 p += strspn(p, SPACE_CHARS);
1617ad97
FB
74 q = buf;
75 while (!strchr(sep, *p) && *p != '\0') {
76 if ((q - buf) < buf_size - 1)
77 *q++ = *p;
78 p++;
79 }
80 if (buf_size > 0)
81 *q = '\0';
82 *pp = p;
83}
84
1ef36a70
RB
85static void get_word_sep(char *buf, int buf_size, const char *sep,
86 const char **pp)
1617ad97 87{
1ef36a70
RB
88 if (**pp == '/') (*pp)++;
89 get_word_until_chars(buf, buf_size, sep, pp);
90}
1617ad97 91
1ef36a70
RB
92static void get_word(char *buf, int buf_size, const char **pp)
93{
94 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
95}
96
8bf0f969
MS
97/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
98 * and end time.
99 * Used for seeking in the rtp stream.
100 */
101static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
102{
103 char buf[256];
104
105 p += strspn(p, SPACE_CHARS);
106 if (!av_stristart(p, "npt=", &p))
107 return;
108
109 *start = AV_NOPTS_VALUE;
110 *end = AV_NOPTS_VALUE;
111
112 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 113 av_parse_time(start, buf, 1);
8bf0f969
MS
114 if (*p == '-') {
115 p++;
116 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 117 av_parse_time(end, buf, 1);
8bf0f969
MS
118 }
119// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
120// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
121}
122
123static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
124{
125 struct addrinfo hints, *ai = NULL;
126 memset(&hints, 0, sizeof(hints));
127 hints.ai_flags = AI_NUMERICHOST;
128 if (getaddrinfo(buf, NULL, &hints, &ai))
129 return -1;
130 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
131 freeaddrinfo(ai);
132 return 0;
133}
134
44b70ce5 135#if CONFIG_RTPDEC
003eb642
MS
136static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
137 RTSPStream *rtsp_st, AVCodecContext *codec)
138{
139 if (!handler)
140 return;
141 codec->codec_id = handler->codec_id;
142 rtsp_st->dynamic_handler = handler;
9261e6cf
MS
143 if (handler->alloc)
144 rtsp_st->dynamic_protocol_context = handler->alloc();
003eb642
MS
145}
146
c8965800 147/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 148static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 149 AVStream *st, RTSPStream *rtsp_st,
c8965800 150 int payload_type, const char *p)
93ced3e8 151{
86b6e387 152 AVCodecContext *codec = st->codec;
93ced3e8 153 char buf[256];
d1ccf0e0
RD
154 int i;
155 AVCodec *c;
7b49ce2e 156 const char *c_name;
93ced3e8 157
d1ccf0e0 158 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
159 * see if we can handle this kind of payload.
160 * The space should normally not be there but some Real streams or
161 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
162 * have a trailing space. */
163 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 164 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
165 RTPDynamicProtocolHandler *handler =
166 ff_rtp_handler_find_by_name(buf, codec->codec_type);
167 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
168 /* If no dynamic handler was found, check with the list of standard
169 * allocated types, if such a stream for some reason happens to
170 * use a private payload type. This isn't handled in rtpdec.c, since
171 * the format name from the rtpmap line never is passed into rtpdec. */
172 if (!rtsp_st->dynamic_handler)
173 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 174 } else {
c8965800
RB
175 /* We are in a standard case
176 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 177 /* search into AVRtpPayloadTypes[] */
7ed19d7f 178 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
179 }
180
181 c = avcodec_find_decoder(codec->codec_id);
182 if (c && c->name)
7b49ce2e 183 c_name = c->name;
d1ccf0e0 184 else
170870b7 185 c_name = "(null)";
d1ccf0e0 186
7515ed0c
RB
187 get_word_sep(buf, sizeof(buf), "/", &p);
188 i = atoi(buf);
189 switch (codec->codec_type) {
72415b2a 190 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
191 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
192 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
193 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
194 if (i > 0) {
195 codec->sample_rate = i;
86b6e387 196 av_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
197 get_word_sep(buf, sizeof(buf), "/", &p);
198 i = atoi(buf);
199 if (i > 0)
200 codec->channels = i;
201 // TODO: there is a bug here; if it is a mono stream, and
202 // less than 22000Hz, faad upconverts to stereo and twice
203 // the frequency. No problem, but the sample rate is being
204 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 205 }
7515ed0c
RB
206 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
207 codec->sample_rate);
208 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
209 codec->channels);
210 break;
72415b2a 211 case AVMEDIA_TYPE_VIDEO:
7515ed0c 212 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387
MS
213 if (i > 0)
214 av_set_pts_info(st, 32, 1, i);
7515ed0c
RB
215 break;
216 default:
217 break;
218 }
219 return 0;
93ced3e8
FB
220}
221
c2bfd816 222/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
223 * is broken out as a function because it is used in rtp_h264.c, which is
224 * forthcoming. */
3307e6ea 225int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 226 char *value, int value_size)
d0deedcb 227{
30619e6e 228 *p += strspn(*p, SPACE_CHARS);
c8965800 229 if (**p) {
d0deedcb
RM
230 get_word_sep(attr, attr_size, "=", p);
231 if (**p == '=')
232 (*p)++;
233 get_word_sep(value, value_size, ";", p);
234 if (**p == ';')
235 (*p)++;
236 return 1;
237 }
238 return 0;
239}
240
93ced3e8
FB
241typedef struct SDPParseState {
242 /* SDP only */
3fbd12d1 243 struct sockaddr_storage default_ip;
c8965800
RB
244 int default_ttl;
245 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
246} SDPParseState;
247
248static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
249 int letter, const char *buf)
250{
8b1ab7bf 251 RTSPState *rt = s->priv_data;
1617ad97
FB
252 char buf1[64], st_type[64];
253 const char *p;
72415b2a 254 enum AVMediaType codec_type;
fb65d2ca 255 int payload_type, i;
1617ad97
FB
256 AVStream *st;
257 RTSPStream *rtsp_st;
3fbd12d1 258 struct sockaddr_storage sdp_ip;
93ced3e8
FB
259 int ttl;
260
dfd2a005 261 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
262
263 p = buf;
cb760a47
RB
264 if (s1->skip_media && letter != 'm')
265 return;
c8965800 266 switch (letter) {
93ced3e8
FB
267 case 'c':
268 get_word(buf1, sizeof(buf1), &p);
269 if (strcmp(buf1, "IN") != 0)
270 return;
271 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 272 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
273 return;
274 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 275 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
276 return;
277 ttl = 16;
278 if (*p == '/') {
279 p++;
280 get_word_sep(buf1, sizeof(buf1), "/", &p);
281 ttl = atoi(buf1);
282 }
283 if (s->nb_streams == 0) {
284 s1->default_ip = sdp_ip;
285 s1->default_ttl = ttl;
286 } else {
d9c0510e 287 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
288 rtsp_st->sdp_ip = sdp_ip;
289 rtsp_st->sdp_ttl = ttl;
290 }
291 break;
1617ad97 292 case 's':
d2d67e42 293 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
294 break;
295 case 'i':
296 if (s->nb_streams == 0) {
d2d67e42 297 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
298 break;
299 }
300 break;
301 case 'm':
302 /* new stream */
cb760a47 303 s1->skip_media = 0;
1617ad97
FB
304 get_word(st_type, sizeof(st_type), &p);
305 if (!strcmp(st_type, "audio")) {
72415b2a 306 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 307 } else if (!strcmp(st_type, "video")) {
72415b2a 308 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 309 } else if (!strcmp(st_type, "application")) {
72415b2a 310 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 311 } else {
cb760a47 312 s1->skip_media = 1;
1617ad97
FB
313 return;
314 }
1617ad97
FB
315 rtsp_st = av_mallocz(sizeof(RTSPStream));
316 if (!rtsp_st)
317 return;
8b1ab7bf
FB
318 rtsp_st->stream_index = -1;
319 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
320
321 rtsp_st->sdp_ip = s1->default_ip;
322 rtsp_st->sdp_ttl = s1->default_ttl;
323
93ced3e8
FB
324 get_word(buf1, sizeof(buf1), &p); /* port */
325 rtsp_st->sdp_port = atoi(buf1);
326
327 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 328
93ced3e8
FB
329 /* XXX: handle list of formats */
330 get_word(buf1, sizeof(buf1), &p); /* format list */
331 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 332
7ed19d7f 333 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
334 /* no corresponding stream */
335 } else {
b2dd842d 336 st = av_new_stream(s, rt->nb_rtsp_streams - 1);
8b1ab7bf
FB
337 if (!st)
338 return;
8b1ab7bf 339 rtsp_st->stream_index = st->index;
01f4895c 340 st->codec->codec_type = codec_type;
d1ccf0e0 341 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 342 RTPDynamicProtocolHandler *handler;
8b1ab7bf 343 /* if standard payload type, we can find the codec right now */
bf6d9818 344 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
345 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
346 st->codec->sample_rate > 0)
86b6e387 347 av_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
348 /* Even static payload types may need a custom depacketizer */
349 handler = ff_rtp_handler_find_by_id(
350 rtsp_st->sdp_payload_type, st->codec->codec_type);
351 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
352 }
353 }
1617ad97 354 /* put a default control url */
00eb13e0 355 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 356 sizeof(rtsp_st->control_url));
1617ad97
FB
357 break;
358 case 'a':
00eb13e0
AS
359 if (av_strstart(p, "control:", &p)) {
360 if (s->nb_streams == 0) {
361 if (!strncmp(p, "rtsp://", 7))
362 av_strlcpy(rt->control_uri, p,
363 sizeof(rt->control_uri));
364 } else {
0b6a7ff4
MS
365 char proto[32];
366 /* get the control url */
d9c0510e 367 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 368
0b6a7ff4
MS
369 /* XXX: may need to add full url resolution */
370 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
371 NULL, NULL, 0, p);
372 if (proto[0] == '\0') {
373 /* relative control URL */
374 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
375 av_strlcat(rtsp_st->control_url, "/",
376 sizeof(rtsp_st->control_url));
377 av_strlcat(rtsp_st->control_url, p,
378 sizeof(rtsp_st->control_url));
379 } else
380 av_strlcpy(rtsp_st->control_url, p,
381 sizeof(rtsp_st->control_url));
00eb13e0 382 }
83d14c85 383 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 384 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 385 get_word(buf1, sizeof(buf1), &p);
93ced3e8 386 payload_type = atoi(buf1);
83d14c85 387 st = s->streams[s->nb_streams - 1];
d9c0510e 388 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
86b6e387 389 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
390 } else if (av_strstart(p, "fmtp:", &p) ||
391 av_strstart(p, "framesize:", &p)) {
93ced3e8 392 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
393 // let dynamic protocol handlers have a stab at the line.
394 get_word(buf1, sizeof(buf1), &p);
395 payload_type = atoi(buf1);
d9c0510e
MS
396 for (i = 0; i < rt->nb_rtsp_streams; i++) {
397 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
398 if (rtsp_st->sdp_payload_type == payload_type &&
399 rtsp_st->dynamic_handler &&
400 rtsp_st->dynamic_handler->parse_sdp_a_line)
401 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
402 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 403 }
c8965800 404 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
405 int64_t start, end;
406
407 // this is so that seeking on a streamed file can work.
408 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
409 s->start_time = start;
410 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
411 s->duration = (end == AV_NOPTS_VALUE) ?
412 AV_NOPTS_VALUE : end - start;
119b4668
RB
413 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
414 if (atoi(p) == 1)
415 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
416 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
417 s->nb_streams > 0) {
418 st = s->streams[s->nb_streams - 1];
419 st->codec->sample_rate = atoi(p);
1a30d541
RB
420 } else {
421 if (rt->server_type == RTSP_SERVER_WMS)
422 ff_wms_parse_sdp_a_line(s, p);
423 if (s->nb_streams > 0) {
c4a3d032
RB
424 if (rt->server_type == RTSP_SERVER_REAL)
425 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
426
d9c0510e 427 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
c4a3d032
RB
428 if (rtsp_st->dynamic_handler &&
429 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
430 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
431 s->nb_streams - 1,
c4a3d032 432 rtsp_st->dynamic_protocol_context, buf);
1a30d541 433 }
1617ad97
FB
434 }
435 break;
436 }
437}
438
0526c6f7 439int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 440{
a8475bbd 441 RTSPState *rt = s->priv_data;
1617ad97
FB
442 const char *p;
443 int letter;
9211bcdd
RB
444 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
445 * contain long SDP lines containing complete ASF Headers (several
446 * kB) or arrays of MDPR (RM stream descriptor) headers plus
447 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
448 * buffer is large.
449 *
afcea58c
JA
450 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
451 * in rtpdec_xiph.c. */
373afbaf 452 char buf[16384], *q;
93ced3e8 453 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 454
93ced3e8 455 memset(s1, 0, sizeof(SDPParseState));
1617ad97 456 p = content;
c8965800 457 for (;;) {
30619e6e 458 p += strspn(p, SPACE_CHARS);
1617ad97
FB
459 letter = *p;
460 if (letter == '\0')
461 break;
462 p++;
463 if (*p != '=')
464 goto next_line;
465 p++;
466 /* get the content */
467 q = buf;
b6892136 468 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
469 if ((q - buf) < sizeof(buf) - 1)
470 *q++ = *p;
471 p++;
472 }
473 *q = '\0';
93ced3e8 474 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
475 next_line:
476 while (*p != '\n' && *p != '\0')
477 p++;
478 if (*p == '\n')
479 p++;
480 }
a8475bbd
LB
481 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
482 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
483 return 0;
484}
44b70ce5 485#endif /* CONFIG_RTPDEC */
1617ad97 486
93e7490e
MS
487void ff_rtsp_undo_setup(AVFormatContext *s)
488{
489 RTSPState *rt = s->priv_data;
490 int i;
491
492 for (i = 0; i < rt->nb_rtsp_streams; i++) {
493 RTSPStream *rtsp_st = rt->rtsp_streams[i];
494 if (!rtsp_st)
495 continue;
496 if (rtsp_st->transport_priv) {
497 if (s->oformat) {
498 AVFormatContext *rtpctx = rtsp_st->transport_priv;
499 av_write_trailer(rtpctx);
500 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
501 uint8_t *ptr;
6dc7d80d 502 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
503 av_free(ptr);
504 } else {
22a3212e 505 avio_close(rtpctx->pb);
93e7490e 506 }
b22dbb29 507 avformat_free_context(rtpctx);
93e7490e
MS
508 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
509 ff_rdt_parse_close(rtsp_st->transport_priv);
510 else if (CONFIG_RTPDEC)
bfc6db44 511 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
512 }
513 rtsp_st->transport_priv = NULL;
514 if (rtsp_st->rtp_handle)
e52a9145 515 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
516 rtsp_st->rtp_handle = NULL;
517 }
518}
519
1ced9da3 520/* close and free RTSP streams */
3307e6ea 521void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 522{
52aa4338 523 RTSPState *rt = s->priv_data;
1ced9da3
LA
524 int i;
525 RTSPStream *rtsp_st;
526
93e7490e 527 ff_rtsp_undo_setup(s);
c8965800 528 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
529 rtsp_st = rt->rtsp_streams[i];
530 if (rtsp_st) {
1ced9da3 531 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 532 rtsp_st->dynamic_handler->free(
c8965800 533 rtsp_st->dynamic_protocol_context);
ea7f0807 534 av_free(rtsp_st);
1ced9da3
LA
535 }
536 }
537 av_free(rt->rtsp_streams);
538 if (rt->asf_ctx) {
539 av_close_input_stream (rt->asf_ctx);
540 rt->asf_ctx = NULL;
541 }
a8475bbd 542 av_free(rt->p);
96a7c975 543 av_free(rt->recvbuf);
1ced9da3
LA
544}
545
c8965800 546static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
547{
548 RTSPState *rt = s->priv_data;
549 AVStream *st = NULL;
550
551 /* open the RTP context */
552 if (rtsp_st->stream_index >= 0)
553 st = s->streams[rtsp_st->stream_index];
554 if (!st)
555 s->ctx_flags |= AVFMTCTX_NOHEADER;
556
44b70ce5 557 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
558 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
559 rtsp_st->rtp_handle,
560 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 561 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 562 rtsp_st->rtp_handle = NULL;
44b70ce5 563 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
564 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
565 rtsp_st->dynamic_protocol_context,
566 rtsp_st->dynamic_handler);
44b70ce5 567 else if (CONFIG_RTPDEC)
bfc6db44 568 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
569 rtsp_st->sdp_payload_type,
570 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
571 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
572
573 if (!rtsp_st->transport_priv) {
574 return AVERROR(ENOMEM);
44b70ce5 575 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 576 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
577 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
578 rtsp_st->dynamic_protocol_context,
579 rtsp_st->dynamic_handler);
1ced9da3
LA
580 }
581 }
582
583 return 0;
584}
585
6f5a3d0a 586#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
587static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
588{
589 const char *p;
590 int v;
591
592 p = *pp;
30619e6e 593 p += strspn(p, SPACE_CHARS);
1617ad97
FB
594 v = strtol(p, (char **)&p, 10);
595 if (*p == '-') {
596 p++;
597 *min_ptr = v;
598 v = strtol(p, (char **)&p, 10);
599 *max_ptr = v;
600 } else {
601 *min_ptr = v;
602 *max_ptr = v;
603 }
604 *pp = p;
605}
606
607/* XXX: only one transport specification is parsed */
a9e534d5 608static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
609{
610 char transport_protocol[16];
611 char profile[16];
612 char lower_transport[16];
613 char parameter[16];
614 RTSPTransportField *th;
615 char buf[256];
115329f1 616
1617ad97 617 reply->nb_transports = 0;
115329f1 618
c8965800 619 for (;;) {
30619e6e 620 p += strspn(p, SPACE_CHARS);
1617ad97
FB
621 if (*p == '\0')
622 break;
623
624 th = &reply->transports[reply->nb_transports];
625
115329f1 626 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 627 "/", &p);
e1502118 628 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
629 get_word_sep(profile, sizeof(profile), "/;,", &p);
630 lower_transport[0] = '\0';
631 /* rtp/avp/<protocol> */
632 if (*p == '/') {
7ecc634e
LB
633 get_word_sep(lower_transport, sizeof(lower_transport),
634 ";,", &p);
119b4668
RB
635 }
636 th->transport = RTSP_TRANSPORT_RTP;
637 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
638 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 639 /* x-pn-tng/<protocol> */
e1502118
LB
640 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
641 profile[0] = '\0';
119b4668 642 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 643 }
b6892136 644 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 645 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 646 else
90abbdba 647 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 648
1617ad97
FB
649 if (*p == ';')
650 p++;
651 /* get each parameter */
652 while (*p != '\0' && *p != ',') {
653 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
654 if (!strcmp(parameter, "port")) {
655 if (*p == '=') {
656 p++;
657 rtsp_parse_range(&th->port_min, &th->port_max, &p);
658 }
659 } else if (!strcmp(parameter, "client_port")) {
660 if (*p == '=') {
661 p++;
115329f1 662 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
663 &th->client_port_max, &p);
664 }
665 } else if (!strcmp(parameter, "server_port")) {
666 if (*p == '=') {
667 p++;
115329f1 668 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
669 &th->server_port_max, &p);
670 }
671 } else if (!strcmp(parameter, "interleaved")) {
672 if (*p == '=') {
673 p++;
115329f1 674 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
675 &th->interleaved_max, &p);
676 }
677 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
678 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
679 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
680 } else if (!strcmp(parameter, "ttl")) {
681 if (*p == '=') {
682 p++;
683 th->ttl = strtol(p, (char **)&p, 10);
684 }
685 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
686 if (*p == '=') {
687 p++;
688 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 689 get_sockaddr(buf, &th->destination);
1617ad97 690 }
619298a8
JW
691 } else if (!strcmp(parameter, "source")) {
692 if (*p == '=') {
693 p++;
694 get_word_sep(buf, sizeof(buf), ";,", &p);
695 av_strlcpy(th->source, buf, sizeof(th->source));
696 }
1617ad97 697 }
619298a8 698
1617ad97
FB
699 while (*p != ';' && *p != '\0' && *p != ',')
700 p++;
701 if (*p == ';')
702 p++;
703 }
704 if (*p == ',')
705 p++;
706
707 reply->nb_transports++;
708 }
709}
710
29db7c3a
MS
711static void handle_rtp_info(RTSPState *rt, const char *url,
712 uint32_t seq, uint32_t rtptime)
713{
714 int i;
715 if (!rtptime || !url[0])
716 return;
717 if (rt->transport != RTSP_TRANSPORT_RTP)
718 return;
719 for (i = 0; i < rt->nb_rtsp_streams; i++) {
720 RTSPStream *rtsp_st = rt->rtsp_streams[i];
721 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
722 if (!rtpctx)
723 continue;
724 if (!strcmp(rtsp_st->control_url, url)) {
725 rtpctx->base_timestamp = rtptime;
726 break;
727 }
728 }
729}
730
731static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
732{
733 int read = 0;
734 char key[20], value[1024], url[1024] = "";
735 uint32_t seq = 0, rtptime = 0;
736
737 for (;;) {
738 p += strspn(p, SPACE_CHARS);
739 if (!*p)
740 break;
741 get_word_sep(key, sizeof(key), "=", &p);
742 if (*p != '=')
743 break;
744 p++;
745 get_word_sep(value, sizeof(value), ";, ", &p);
746 read++;
747 if (!strcmp(key, "url"))
748 av_strlcpy(url, value, sizeof(url));
749 else if (!strcmp(key, "seq"))
4515f9b5 750 seq = strtoul(value, NULL, 10);
29db7c3a 751 else if (!strcmp(key, "rtptime"))
4515f9b5 752 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
753 if (*p == ',') {
754 handle_rtp_info(rt, url, seq, rtptime);
755 url[0] = '\0';
756 seq = rtptime = 0;
757 read = 0;
758 }
759 if (*p)
760 p++;
761 }
762 if (read > 0)
763 handle_rtp_info(rt, url, seq, rtptime);
764}
765
2626308a 766void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 767 RTSPState *rt, const char *method)
1617ad97
FB
768{
769 const char *p;
770
771 /* NOTE: we do case independent match for broken servers */
772 p = buf;
f7d78f36 773 if (av_stristart(p, "Session:", &p)) {
30e79845 774 int t;
1617ad97 775 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
776 if (av_stristart(p, ";timeout=", &p) &&
777 (t = strtol(p, NULL, 10)) > 0) {
778 reply->timeout = t;
779 }
f7d78f36 780 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 781 reply->content_length = strtol(p, NULL, 10);
f7d78f36 782 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 783 rtsp_parse_transport(reply, p);
f7d78f36 784 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 785 reply->seq = strtol(p, NULL, 10);
f7d78f36 786 } else if (av_stristart(p, "Range:", &p)) {
31693e00 787 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 788 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 789 p += strspn(p, SPACE_CHARS);
30aa6aed 790 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 791 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 792 p += strspn(p, SPACE_CHARS);
7a86bafa 793 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
794 } else if (av_stristart(p, "Notice:", &p) ||
795 av_stristart(p, "X-Notice:", &p)) {
796 reply->notice = strtol(p, NULL, 10);
d243ba30 797 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 798 p += strspn(p, SPACE_CHARS);
d243ba30 799 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 800 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 801 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
802 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
803 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 804 p += strspn(p, SPACE_CHARS);
acc9ed14 805 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 806 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 807 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
808 if (method && !strcmp(method, "DESCRIBE"))
809 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
810 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
811 p += strspn(p, SPACE_CHARS);
812 if (method && !strcmp(method, "PLAY"))
813 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
814 } else if (av_stristart(p, "Public:", &p) && rt) {
815 if (strstr(p, "GET_PARAMETER") &&
816 method && !strcmp(method, "OPTIONS"))
817 rt->get_parameter_supported = 1;
30eae325
MS
818 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
819 p += strspn(p, SPACE_CHARS);
820 rt->accept_dynamic_rate = atoi(p);
1617ad97
FB
821 }
822}
823
b7b8fc34 824/* skip a RTP/TCP interleaved packet */
ec55edba 825void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
826{
827 RTSPState *rt = s->priv_data;
828 int ret, len, len1;
829 uint8_t buf[1024];
830
dce37564 831 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
832 if (ret != 3)
833 return;
80fb8234 834 len = AV_RB16(buf + 1);
67c9cd69 835
dfd2a005 836 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 837
b7b8fc34
FB
838 /* skip payload */
839 while (len > 0) {
840 len1 = len;
841 if (len1 > sizeof(buf))
842 len1 = sizeof(buf);
dce37564 843 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
844 if (ret != len1)
845 return;
846 len -= len1;
847 }
848}
1617ad97 849
3307e6ea 850int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 851 unsigned char **content_ptr,
3df54c6b 852 int return_on_interleaved_data, const char *method)
1617ad97
FB
853{
854 RTSPState *rt = s->priv_data;
855 char buf[4096], buf1[1024], *q;
856 unsigned char ch;
857 const char *p;
7e726132 858 int ret, content_length, line_count = 0;
1617ad97
FB
859 unsigned char *content = NULL;
860
d541a7d2 861 memset(reply, 0, sizeof(*reply));
1617ad97 862
1617ad97 863 /* parse reply (XXX: use buffers) */
1617ad97 864 rt->last_reply[0] = '\0';
c8965800 865 for (;;) {
1617ad97 866 q = buf;
c8965800 867 for (;;) {
dce37564 868 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 869 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 870 if (ret != 1)
2401660d 871 return AVERROR_EOF;
1617ad97
FB
872 if (ch == '\n')
873 break;
b7b8fc34
FB
874 if (ch == '$') {
875 /* XXX: only parse it if first char on line ? */
7e726132
RB
876 if (return_on_interleaved_data) {
877 return 1;
878 } else
ec55edba 879 ff_rtsp_skip_packet(s);
b7b8fc34 880 } else if (ch != '\r') {
1617ad97
FB
881 if ((q - buf) < sizeof(buf) - 1)
882 *q++ = ch;
883 }
884 }
885 *q = '\0';
67c9cd69 886
dfd2a005 887 av_dlog(s, "line='%s'\n", buf);
67c9cd69 888
1617ad97
FB
889 /* test if last line */
890 if (buf[0] == '\0')
891 break;
892 p = buf;
893 if (line_count == 0) {
894 /* get reply code */
895 get_word(buf1, sizeof(buf1), &p);
896 get_word(buf1, sizeof(buf1), &p);
897 reply->status_code = atoi(buf1);
d93fdcbf 898 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 899 } else {
77223c53 900 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
901 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
902 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
903 }
904 line_count++;
905 }
115329f1 906
1617ad97 907 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 908 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 909
1617ad97
FB
910 content_length = reply->content_length;
911 if (content_length > 0) {
912 /* leave some room for a trailing '\0' (useful for simple parsing) */
913 content = av_malloc(content_length + 1);
dce37564 914 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
915 content[content_length] = '\0';
916 }
917 if (content_ptr)
918 *content_ptr = content;
e2e2e7dd
AB
919 else
920 av_free(content);
7e726132 921
7ed8211b
LB
922 if (rt->seq != reply->seq) {
923 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
924 rt->seq, reply->seq);
925 }
926
fccb1770
RB
927 /* EOS */
928 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
929 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 930 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 931 rt->state = RTSP_STATE_IDLE;
c8965800 932 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 933 return AVERROR(EIO); /* data or server error */
c8965800 934 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
935 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
936 return AVERROR(EPERM);
937
7e726132 938 return 0;
1617ad97
FB
939}
940
57c4d01e
DEP
941/**
942 * Send a command to the RTSP server without waiting for the reply.
943 *
944 * @param s RTSP (de)muxer context
945 * @param method the method for the request
946 * @param url the target url for the request
947 * @param headers extra header lines to include in the request
948 * @param send_content if non-null, the data to send as request body content
949 * @param send_content_length the length of the send_content data, or 0 if
950 * send_content is null
951 *
952 * @return zero if success, nonzero otherwise
953 */
954static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
955 const char *method, const char *url,
956 const char *headers,
957 const unsigned char *send_content,
958 int send_content_length)
29b9f58b
RB
959{
960 RTSPState *rt = s->priv_data;
f5d33f52
JA
961 char buf[4096], *out_buf;
962 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 963
f5d33f52
JA
964 /* Add in RTSP headers */
965 out_buf = buf;
29b9f58b 966 rt->seq++;
b17d11c6
MS
967 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
968 if (headers)
969 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 970 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
971 if (rt->session_id[0] != '\0' && (!headers ||
972 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 973 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 974 }
aa8bf2fb
MS
975 if (rt->auth[0]) {
976 char *str = ff_http_auth_create_response(&rt->auth_state,
977 rt->auth, url, method);
978 if (str)
979 av_strlcat(buf, str, sizeof(buf));
980 av_free(str);
981 }
dfd017bf
MS
982 if (send_content_length > 0 && send_content)
983 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 984 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 985
f5d33f52
JA
986 /* base64 encode rtsp if tunneling */
987 if (rt->control_transport == RTSP_MODE_TUNNEL) {
988 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
989 out_buf = base64buf;
990 }
991
dfd2a005 992 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 993
925e908b 994 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
995 if (send_content_length > 0 && send_content) {
996 if (rt->control_transport == RTSP_MODE_TUNNEL) {
997 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
998 "with content data not supported\n");
999 return AVERROR_PATCHWELCOME;
1000 }
925e908b 1001 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1002 }
30e79845 1003 rt->last_cmd_time = av_gettime();
d0382374
JA
1004
1005 return 0;
30e79845
RB
1006}
1007
d0382374 1008int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1009 const char *url, const char *headers)
dfd017bf 1010{
d0382374 1011 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1012}
1013
d0382374 1014int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1015 const char *headers, RTSPMessageHeader *reply,
1016 unsigned char **content_ptr)
30e79845 1017{
d0382374 1018 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1019 content_ptr, NULL, 0);
29b9f58b
RB
1020}
1021
d0382374 1022int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1023 const char *method, const char *url,
1024 const char *header,
1025 RTSPMessageHeader *reply,
1026 unsigned char **content_ptr,
1027 const unsigned char *send_content,
1028 int send_content_length)
dfd017bf 1029{
30af0779
MS
1030 RTSPState *rt = s->priv_data;
1031 HTTPAuthType cur_auth_type;
d0382374 1032 int ret;
30af0779
MS
1033
1034retry:
1035 cur_auth_type = rt->auth_state.auth_type;
d0382374 1036 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1037 send_content,
1038 send_content_length)))
d0382374 1039 return ret;
dfd017bf 1040
3df54c6b 1041 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1042 return ret;
30af0779
MS
1043
1044 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1045 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1046 goto retry;
d0382374 1047
bf55cf19 1048 if (reply->status_code > 400){
d93fdcbf 1049 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1050 method,
d93fdcbf
LB
1051 reply->status_code,
1052 reply->reason);
bf55cf19
LB
1053 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1054 }
1055
d0382374 1056 return 0;
dfd017bf
MS
1057}
1058
fef5649a 1059int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1060 int lower_transport, const char *real_challenge)
1617ad97
FB
1061{
1062 RTSPState *rt = s->priv_data;
f830c9a4 1063 int rtx, j, i, err, interleave = 0;
1617ad97 1064 RTSPStream *rtsp_st;
a9e534d5 1065 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1066 char cmd[2048];
e9dea59f
RB
1067 const char *trans_pref;
1068
119b4668 1069 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1070 trans_pref = "x-pn-tng";
1071 else
1072 trans_pref = "RTP/AVP";
115329f1 1073
30e79845
RB
1074 /* default timeout: 1 minute */
1075 rt->timeout = 60;
1076
1617ad97
FB
1077 /* for each stream, make the setup request */
1078 /* XXX: we assume the same server is used for the control of each
c8965800 1079 * RTSP stream */
d1ccf0e0 1080
c8965800 1081 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1082 char transport[2048];
1083
f75e3da5 1084 /*
f830c9a4
RB
1085 * WMS serves all UDP data over a single connection, the RTX, which
1086 * isn't necessarily the first in the SDP but has to be the first
1087 * to be set up, else the second/third SETUP will fail with a 461.
1088 */
1089 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1090 rt->server_type == RTSP_SERVER_WMS) {
1091 if (i == 0) {
1092 /* rtx first */
1093 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1094 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1095 if (len >= 4 &&
c8965800
RB
1096 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1097 "/rtx"))
f830c9a4
RB
1098 break;
1099 }
1100 if (rtx == rt->nb_rtsp_streams)
1101 return -1; /* no RTX found */
1102 rtsp_st = rt->rtsp_streams[rtx];
1103 } else
1104 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1105 } else
2fea9650 1106 rtsp_st = rt->rtsp_streams[i];
1617ad97 1107
1617ad97 1108 /* RTP/UDP */
90abbdba 1109 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1110 char buf[256];
85fb7b34 1111
f830c9a4
RB
1112 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1113 port = reply->transports[0].client_port_min;
1114 goto have_port;
1115 }
1116
85fb7b34 1117 /* first try in specified port range */
d1ccf0e0 1118 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1119 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1120 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1121 "?localport=%d", j);
c8965800
RB
1122 /* we will use two ports per rtp stream (rtp and rtcp) */
1123 j += 2;
59d96941 1124 if (ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE) == 0)
85fb7b34
FB
1125 goto rtp_opened;
1126 }
1617ad97 1127 }
85fb7b34 1128
a3b058b7
MS
1129 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1130 err = AVERROR(EIO);
1131 goto fail;
85fb7b34
FB
1132
1133 rtp_opened:
bfc6db44 1134 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1135 have_port:
0ad306bc 1136 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1137 "%s/UDP;", trans_pref);
1138 if (rt->server_type != RTSP_SERVER_REAL)
1139 av_strlcat(transport, "unicast;", sizeof(transport));
1140 av_strlcatf(transport, sizeof(transport),
1141 "client_port=%d", port);
f830c9a4
RB
1142 if (rt->transport == RTSP_TRANSPORT_RTP &&
1143 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1144 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1145 }
1146
1147 /* RTP/TCP */
90abbdba 1148 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1149 /* For WMS streams, the application streams are only used for
090438cc
RB
1150 * UDP. When trying to set it up for TCP streams, the server
1151 * will return an error. Therefore, we skip those streams. */
1152 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1153 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1154 AVMEDIA_TYPE_DATA)
090438cc 1155 continue;
0ad306bc 1156 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1157 "%s/TCP;", trans_pref);
895678f8 1158 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1159 av_strlcat(transport, "unicast;", sizeof(transport));
1160 av_strlcatf(transport, sizeof(transport),
1161 "interleaved=%d-%d",
1162 interleave, interleave + 1);
1163 interleave += 2;
1617ad97
FB
1164 }
1165
90abbdba 1166 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1167 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1168 "%s/UDP;multicast", trans_pref);
1617ad97 1169 }
69adcc4f
MS
1170 if (s->oformat) {
1171 av_strlcat(transport, ";mode=receive", sizeof(transport));
1172 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1173 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1174 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1175 snprintf(cmd, sizeof(cmd),
b6892136 1176 "Transport: %s\r\n",
b17d11c6 1177 transport);
76b0d03d
MS
1178 if (rt->accept_dynamic_rate)
1179 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1180 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1181 char real_res[41], real_csum[9];
1182 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1183 real_challenge);
1184 av_strlcatf(cmd, sizeof(cmd),
1185 "If-Match: %s\r\n"
1186 "RealChallenge2: %s, sd=%s\r\n",
1187 rt->session_id, real_res, real_csum);
1188 }
b17d11c6 1189 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1190 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1191 err = 1;
1192 goto fail;
7e6ca34f
RB
1193 } else if (reply->status_code != RTSP_STATUS_OK ||
1194 reply->nb_transports != 1) {
1617ad97
FB
1195 err = AVERROR_INVALIDDATA;
1196 goto fail;
1197 }
1198
1199 /* XXX: same protocol for all streams is required */
1200 if (i > 0) {
119b4668
RB
1201 if (reply->transports[0].lower_transport != rt->lower_transport ||
1202 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1203 err = AVERROR_INVALIDDATA;
1204 goto fail;
1205 }
1206 } else {
90abbdba 1207 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1208 rt->transport = reply->transports[0].transport;
1617ad97
FB
1209 }
1210
8c579c1c
MS
1211 /* Fail if the server responded with another lower transport mode
1212 * than what we requested. */
1213 if (reply->transports[0].lower_transport != lower_transport) {
1214 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1215 err = AVERROR_INVALIDDATA;
1216 goto fail;
1617ad97
FB
1217 }
1218
90abbdba
RB
1219 switch(reply->transports[0].lower_transport) {
1220 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1221 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1222 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1223 break;
115329f1 1224
c8965800 1225 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1226 char url[1024], options[30] = "";
c8965800 1227
a92c30d7
MS
1228 if (rt->filter_source)
1229 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1230 /* Use source address if specified */
1231 if (reply->transports[0].source[0]) {
1232 ff_url_join(url, sizeof(url), "rtp", NULL,
1233 reply->transports[0].source,
d8407339 1234 reply->transports[0].server_port_min, "%s", options);
619298a8 1235 } else {
7bac991f 1236 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1237 reply->transports[0].server_port_min, "%s", options);
619298a8 1238 }
c8965800 1239 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1240 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1241 err = AVERROR_INVALIDDATA;
1242 goto fail;
1617ad97 1243 }
9c8fa20d
MS
1244 /* Try to initialize the connection state in a
1245 * potential NAT router by sending dummy packets.
1246 * RTP/RTCP dummy packets are used for RDT, too.
1247 */
44b70ce5
MS
1248 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1249 CONFIG_RTPDEC)
bfc6db44 1250 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1251 break;
c8965800
RB
1252 }
1253 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1254 char url[1024], namebuf[50];
1255 struct sockaddr_storage addr;
c8965800
RB
1256 int port, ttl;
1257
7934b15d
MS
1258 if (reply->transports[0].destination.ss_family) {
1259 addr = reply->transports[0].destination;
c8965800
RB
1260 port = reply->transports[0].port_min;
1261 ttl = reply->transports[0].ttl;
1262 } else {
7934b15d 1263 addr = rtsp_st->sdp_ip;
c8965800
RB
1264 port = rtsp_st->sdp_port;
1265 ttl = rtsp_st->sdp_ttl;
1266 }
7934b15d
MS
1267 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1268 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1269 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1270 port, "?ttl=%d", ttl);
59d96941 1271 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE) < 0) {
c8965800
RB
1272 err = AVERROR_INVALIDDATA;
1273 goto fail;
1617ad97
FB
1274 }
1275 break;
1276 }
c8965800 1277 }
d1ccf0e0 1278
ee0cb67f 1279 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1280 goto fail;
1617ad97
FB
1281 }
1282
30e79845
RB
1283 if (reply->timeout > 0)
1284 rt->timeout = reply->timeout;
1285
2e889ae4 1286 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1287 rt->need_subscription = 1;
1288
53620bba
RB
1289 return 0;
1290
1291fail:
aeb2de1c 1292 ff_rtsp_undo_setup(s);
53620bba
RB
1293 return err;
1294}
1295
b8c2c41d
JA
1296void ff_rtsp_close_connections(AVFormatContext *s)
1297{
1298 RTSPState *rt = s->priv_data;
e52a9145
AK
1299 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1300 ffurl_close(rt->rtsp_hd);
6217b645 1301 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1302}
1303
3307e6ea 1304int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1305{
1306 RTSPState *rt = s->priv_data;
921da217
LB
1307 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1308 char *option_list, *option, *filename;
03f8fc08 1309 int port, err, tcp_fd;
354b7573 1310 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1311 int lower_transport_mask = 0;
2762a7a2 1312 char real_challenge[64] = "";
03f8fc08
MS
1313 struct sockaddr_storage peer;
1314 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1315
1316 if (!ff_network_init())
1317 return AVERROR(EIO);
c8965800 1318redirect:
f5d33f52 1319 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1320 /* extract hostname and port */
f3bfe388 1321 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1322 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1323 if (*auth) {
aa8bf2fb 1324 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1325 }
53620bba
RB
1326 if (port < 0)
1327 port = RTSP_DEFAULT_PORT;
1328
1329 /* search for options */
602eb779 1330 option_list = strrchr(path, '?');
53620bba 1331 if (option_list) {
2a21adf9
MS
1332 /* Strip out the RTSP specific options, write out the rest of
1333 * the options back into the same string. */
1334 filename = option_list;
c8965800 1335 while (option_list) {
53620bba 1336 /* move the option pointer */
921da217 1337 option = ++option_list;
53620bba
RB
1338 option_list = strchr(option_list, '&');
1339 if (option_list)
921da217
LB
1340 *option_list = 0;
1341
53620bba 1342 /* handle the options */
c8965800 1343 if (!strcmp(option, "udp")) {
7a033e08 1344 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1345 } else if (!strcmp(option, "multicast")) {
7a033e08 1346 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1347 } else if (!strcmp(option, "tcp")) {
7a033e08 1348 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1349 } else if(!strcmp(option, "http")) {
1350 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1351 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7
MS
1352 } else if (!strcmp(option, "filter_src")) {
1353 rt->filter_source = 1;
c8965800 1354 } else {
2a21adf9
MS
1355 /* Write options back into the buffer, using memmove instead
1356 * of strcpy since the strings may overlap. */
1357 int len = strlen(option);
1358 memmove(++filename, option, len);
1359 filename += len;
921da217
LB
1360 if (option_list) *filename = '&';
1361 }
53620bba 1362 }
921da217 1363 *filename = 0;
53620bba
RB
1364 }
1365
90abbdba 1366 if (!lower_transport_mask)
2a1d51c5 1367 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1368
3e24c770 1369 if (s->oformat) {
b7dc88fc
MS
1370 /* Only UDP or TCP - UDP multicast isn't supported. */
1371 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1372 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1373 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1374 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1375 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1376 err = AVERROR(EINVAL);
1377 goto fail;
1378 }
1379 }
1380
4bc5cc23
MS
1381 /* Construct the URI used in request; this is similar to s->filename,
1382 * but with authentication credentials removed and RTSP specific options
1383 * stripped out. */
1384 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1385 host, port, "%s", path);
1386
f5d33f52
JA
1387 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1388 /* set up initial handshake for tunneling */
1389 char httpname[1024];
1390 char sessioncookie[17];
1391 char headers[1024];
1392
10ed37b5 1393 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1394 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1395 av_get_random_seed(), av_get_random_seed());
1396
1397 /* GET requests */
59d96941 1398 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ) < 0) {
f5d33f52
JA
1399 err = AVERROR(EIO);
1400 goto fail;
1401 }
1402
1403 /* generate GET headers */
1404 snprintf(headers, sizeof(headers),
1405 "x-sessioncookie: %s\r\n"
1406 "Accept: application/x-rtsp-tunnelled\r\n"
1407 "Pragma: no-cache\r\n"
1408 "Cache-Control: no-cache\r\n",
1409 sessioncookie);
00e4a1f4 1410 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1411
1412 /* complete the connection */
62eaaeac 1413 if (ffurl_connect(rt->rtsp_hd)) {
f5d33f52
JA
1414 err = AVERROR(EIO);
1415 goto fail;
1416 }
1417
1418 /* POST requests */
59d96941 1419 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE) < 0 ) {
f5d33f52
JA
1420 err = AVERROR(EIO);
1421 goto fail;
1422 }
1423
1424 /* generate POST headers */
1425 snprintf(headers, sizeof(headers),
1426 "x-sessioncookie: %s\r\n"
1427 "Content-Type: application/x-rtsp-tunnelled\r\n"
1428 "Pragma: no-cache\r\n"
1429 "Cache-Control: no-cache\r\n"
1430 "Content-Length: 32767\r\n"
1431 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1432 sessioncookie);
00e4a1f4
JA
1433 ff_http_set_headers(rt->rtsp_hd_out, headers);
1434 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1435
a8ead332
MS
1436 /* Initialize the authentication state for the POST session. The HTTP
1437 * protocol implementation doesn't properly handle multi-pass
1438 * authentication for POST requests, since it would require one of
1439 * the following:
1440 * - implementing Expect: 100-continue, which many HTTP servers
1441 * don't support anyway, even less the RTSP servers that do HTTP
1442 * tunneling
1443 * - sending the whole POST data until getting a 401 reply specifying
1444 * what authentication method to use, then resending all that data
1445 * - waiting for potential 401 replies directly after sending the
1446 * POST header (waiting for some unspecified time)
1447 * Therefore, we copy the full auth state, which works for both basic
1448 * and digest. (For digest, we would have to synchronize the nonce
1449 * count variable between the two sessions, if we'd do more requests
1450 * with the original session, though.)
1451 */
1452 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1453
9290f15d 1454 /* complete the connection */
62eaaeac 1455 if (ffurl_connect(rt->rtsp_hd_out)) {
9290f15d
MS
1456 err = AVERROR(EIO);
1457 goto fail;
1458 }
f5d33f52 1459 } else {
48e77473 1460 /* open the tcp connection */
41874d0a 1461 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
59d96941 1462 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE) < 0) {
41874d0a
JA
1463 err = AVERROR(EIO);
1464 goto fail;
1465 }
00e4a1f4 1466 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1467 }
53620bba
RB
1468 rt->seq = 0;
1469
1869ea03 1470 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1471 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1472 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1473 NULL, 0, NI_NUMERICHOST);
1474 }
1475
c8965800
RB
1476 /* request options supported by the server; this also detects server
1477 * type */
1cf151e9 1478 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1479 cmd[0] = 0;
2e889ae4 1480 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1481 av_strlcat(cmd,
f75e3da5 1482 /*
1cf151e9
RB
1483 * The following entries are required for proper
1484 * streaming from a Realmedia server. They are
1485 * interdependent in some way although we currently
1486 * don't quite understand how. Values were copied
1487 * from mplayer SVN r23589.
f75e3da5
DB
1488 * ClientChallenge is a 16-byte ID in hex
1489 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1490 */
1491 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1492 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1493 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1494 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1495 sizeof(cmd));
b17d11c6 1496 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1497 if (reply->status_code != RTSP_STATUS_OK) {
1498 err = AVERROR_INVALIDDATA;
1499 goto fail;
1500 }
1501
1502 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1503 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1504 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1505 continue;
7a86bafa
RB
1506 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1507 rt->server_type = RTSP_SERVER_WMS;
c8965800 1508 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1509 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1510 break;
1511 }
1512
44b70ce5 1513 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1514 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1515 else if (CONFIG_RTSP_MUXER)
c2688f3a 1516 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1517 if (err)
53620bba 1518 goto fail;
53620bba 1519
8a8754d8 1520 do {
c8965800
RB
1521 int lower_transport = ff_log2_tab[lower_transport_mask &
1522 ~(lower_transport_mask - 1)];
8a8754d8 1523
fef5649a 1524 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1525 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1526 real_challenge : NULL);
8a8754d8 1527 if (err < 0)
7e6ca34f 1528 goto fail;
90abbdba
RB
1529 lower_transport_mask &= ~(1 << lower_transport);
1530 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1531 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1532 goto fail;
1533 }
1534 } while (err);
53620bba 1535
2762a7a2
MS
1536 rt->lower_transport_mask = lower_transport_mask;
1537 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1538 rt->state = RTSP_STATE_IDLE;
c8965800 1539 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1540 return 0;
1541 fail:
3307e6ea 1542 ff_rtsp_close_streams(s);
b8c2c41d 1543 ff_rtsp_close_connections(s);
35cfd646 1544 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1545 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1546 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1547 reply->status_code,
1548 s->filename);
1549 goto redirect;
1550 }
57b5555c 1551 ff_network_close();
1617ad97
FB
1552 return err;
1553}
2e802e38 1554#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1555
44b70ce5 1556#if CONFIG_RTPDEC
0e59034e 1557static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1558 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1559{
1560 RTSPState *rt = s->priv_data;
1561 RTSPStream *rtsp_st;
a8475bbd
LB
1562 int n, i, ret, tcp_fd, timeout_cnt = 0;
1563 int max_p = 0;
1564 struct pollfd *p = rt->p;
0e59034e 1565
c8965800 1566 for (;;) {
0e59034e 1567 if (url_interrupt_cb())
c76374c6 1568 return AVERROR_EXIT;
321259c1
MS
1569 if (wait_end && wait_end - av_gettime() < 0)
1570 return AVERROR(EAGAIN);
a8475bbd 1571 max_p = 0;
0e59034e 1572 if (rt->rtsp_hd) {
1869ea03 1573 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1574 p[max_p].fd = tcp_fd;
1575 p[max_p++].events = POLLIN;
0e59034e 1576 } else {
0e59034e
RB
1577 tcp_fd = -1;
1578 }
c8965800 1579 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1580 rtsp_st = rt->rtsp_streams[i];
1581 if (rtsp_st->rtp_handle) {
1869ea03 1582 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1583 p[max_p++].events = POLLIN;
bfc6db44 1584 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1585 p[max_p++].events = POLLIN;
0e59034e
RB
1586 }
1587 }
a8475bbd 1588 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1589 if (n > 0) {
a8475bbd 1590 int j = 1 - (tcp_fd == -1);
9cba6f5f 1591 timeout_cnt = 0;
c8965800 1592 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1593 rtsp_st = rt->rtsp_streams[i];
1594 if (rtsp_st->rtp_handle) {
a8475bbd 1595 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1596 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1597 if (ret > 0) {
1598 *prtsp_st = rtsp_st;
1599 return ret;
1600 }
1601 }
a8475bbd 1602 j+=2;
0e59034e
RB
1603 }
1604 }
5fe8021a 1605#if CONFIG_RTSP_DEMUXER
a8475bbd 1606 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1607 RTSPMessageHeader reply;
1608
3df54c6b 1609 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1610 if (ret < 0)
1611 return ret;
0e59034e 1612 /* XXX: parse message */
c02fd3d2 1613 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1614 return 0;
1615 }
5fe8021a 1616#endif
9cba6f5f 1617 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1618 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1619 } else if (n < 0 && errno != EINTR)
1620 return AVERROR(errno);
0e59034e
RB
1621 }
1622}
1623
0526c6f7 1624int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1625{
1626 RTSPState *rt = s->priv_data;
1627 int ret, len;
321259c1
MS
1628 RTSPStream *rtsp_st, *first_queue_st = NULL;
1629 int64_t wait_end = 0;
0e59034e 1630
b20359f5
JA
1631 if (rt->nb_byes == rt->nb_rtsp_streams)
1632 return AVERROR_EOF;
1633
0e59034e
RB
1634 /* get next frames from the same RTP packet */
1635 if (rt->cur_transport_priv) {
c8965800 1636 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1637 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1638 } else
bfc6db44 1639 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1640 if (ret == 0) {
1641 rt->cur_transport_priv = NULL;
1642 return 0;
1643 } else if (ret == 1) {
1644 return 0;
c8965800 1645 } else
0e59034e 1646 rt->cur_transport_priv = NULL;
0e59034e
RB
1647 }
1648
321259c1
MS
1649 if (rt->transport == RTSP_TRANSPORT_RTP) {
1650 int i;
1651 int64_t first_queue_time = 0;
1652 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1653 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1654 int64_t queue_time;
1655 if (!rtpctx)
1656 continue;
1657 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1658 if (queue_time && (queue_time - first_queue_time < 0 ||
1659 !first_queue_time)) {
1660 first_queue_time = queue_time;
1661 first_queue_st = rt->rtsp_streams[i];
1662 }
1663 }
1664 if (first_queue_time)
1665 wait_end = first_queue_time + s->max_delay;
1666 }
1667
0e59034e
RB
1668 /* read next RTP packet */
1669 redo:
96a7c975
MS
1670 if (!rt->recvbuf) {
1671 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1672 if (!rt->recvbuf)
1673 return AVERROR(ENOMEM);
1674 }
1675
0e59034e
RB
1676 switch(rt->lower_transport) {
1677 default:
5fe8021a 1678#if CONFIG_RTSP_DEMUXER
0e59034e 1679 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1680 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1681 break;
5fe8021a 1682#endif
0e59034e
RB
1683 case RTSP_LOWER_TRANSPORT_UDP:
1684 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1685 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1686 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1687 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1688 break;
1689 }
321259c1
MS
1690 if (len == AVERROR(EAGAIN) && first_queue_st &&
1691 rt->transport == RTSP_TRANSPORT_RTP) {
1692 rtsp_st = first_queue_st;
bfc6db44 1693 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1694 goto end;
1695 }
0e59034e
RB
1696 if (len < 0)
1697 return len;
1698 if (len == 0)
1699 return AVERROR_EOF;
c8965800 1700 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1701 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1702 } else {
bfc6db44 1703 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1704 if (ret < 0) {
1705 /* Either bad packet, or a RTCP packet. Check if the
1706 * first_rtcp_ntp_time field was initialized. */
1707 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1708 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1709 /* first_rtcp_ntp_time has been initialized for this stream,
1710 * copy the same value to all other uninitialized streams,
1711 * in order to map their timestamp origin to the same ntp time
1712 * as this one. */
1713 int i;
3a1cdcc7
MS
1714 AVStream *st = NULL;
1715 if (rtsp_st->stream_index >= 0)
1716 st = s->streams[rtsp_st->stream_index];
2cab6b48 1717 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1718 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1719 AVStream *st2 = NULL;
1720 if (rt->rtsp_streams[i]->stream_index >= 0)
1721 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1722 if (rtpctx2 && st && st2 &&
1723 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1724 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1725 rtpctx2->rtcp_ts_offset = av_rescale_q(
1726 rtpctx->rtcp_ts_offset, st->time_base,
1727 st2->time_base);
1728 }
2cab6b48
MS
1729 }
1730 }
b20359f5
JA
1731 if (ret == -RTCP_BYE) {
1732 rt->nb_byes++;
1733
1734 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1735 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1736
1737 if (rt->nb_byes == rt->nb_rtsp_streams)
1738 return AVERROR_EOF;
1739 }
2cab6b48
MS
1740 }
1741 }
321259c1 1742end:
0e59034e
RB
1743 if (ret < 0)
1744 goto redo;
c8965800 1745 if (ret == 1)
0e59034e
RB
1746 /* more packets may follow, so we save the RTP context */
1747 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1748
1749 return ret;
1750}
44b70ce5 1751#endif /* CONFIG_RTPDEC */
0e59034e 1752
44b70ce5 1753#if CONFIG_SDP_DEMUXER
cb1fdc61 1754static int sdp_probe(AVProbeData *p1)
93ced3e8 1755{
0e1ceacd 1756 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1757
3fbd12d1 1758 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1759 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1760 if (p + sizeof("c=IN IP") - 1 < p_end &&
1761 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1762 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1763
c8965800 1764 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1765 if (++p >= p_end)
cb1fdc61 1766 break;
cb1fdc61
FB
1767 if (*p == '\r')
1768 p++;
1769 }
93ced3e8
FB
1770 return 0;
1771}
1772
c8965800 1773static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1774{
8b1ab7bf 1775 RTSPState *rt = s->priv_data;
93ced3e8
FB
1776 RTSPStream *rtsp_st;
1777 int size, i, err;
1778 char *content;
1779 char url[1024];
1780
57b5555c
MS
1781 if (!ff_network_init())
1782 return AVERROR(EIO);
1783
93ced3e8
FB
1784 /* read the whole sdp file */
1785 /* XXX: better loading */
1786 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1787 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1788 if (size <= 0) {
1789 av_free(content);
1790 return AVERROR_INVALIDDATA;
1791 }
1792 content[size] ='\0';
1793
f81c7ac7 1794 err = ff_sdp_parse(s, content);
93ced3e8 1795 av_free(content);
f81c7ac7 1796 if (err) goto fail;
93ced3e8
FB
1797
1798 /* open each RTP stream */
c8965800 1799 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1800 char namebuf[50];
8b1ab7bf 1801 rtsp_st = rt->rtsp_streams[i];
115329f1 1802
3fbd12d1
MS
1803 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1804 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1805 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1806 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1807 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1808 rtsp_st->sdp_ttl);
59d96941 1809 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE) < 0) {
93ced3e8
FB
1810 err = AVERROR_INVALIDDATA;
1811 goto fail;
1812 }
ee0cb67f 1813 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1814 goto fail;
93ced3e8
FB
1815 }
1816 return 0;
c8965800 1817fail:
3307e6ea 1818 ff_rtsp_close_streams(s);
57b5555c 1819 ff_network_close();
93ced3e8
FB
1820 return err;
1821}
1822
93ced3e8
FB
1823static int sdp_read_close(AVFormatContext *s)
1824{
3307e6ea 1825 ff_rtsp_close_streams(s);
57b5555c 1826 ff_network_close();
93ced3e8
FB
1827 return 0;
1828}
1829
c6610a21 1830AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1831 .name = "sdp",
1832 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1833 .priv_data_size = sizeof(RTSPState),
1834 .read_probe = sdp_probe,
1835 .read_header = sdp_read_header,
1836 .read_packet = ff_rtsp_fetch_packet,
1837 .read_close = sdp_read_close,
93ced3e8 1838};
44b70ce5 1839#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1840
44b70ce5 1841#if CONFIG_RTP_DEMUXER
44594cc7
MS
1842static int rtp_probe(AVProbeData *p)
1843{
1844 if (av_strstart(p->filename, "rtp:", NULL))
1845 return AVPROBE_SCORE_MAX;
1846 return 0;
1847}
1848
1849static int rtp_read_header(AVFormatContext *s,
1850 AVFormatParameters *ap)
1851{
1852 uint8_t recvbuf[1500];
1853 char host[500], sdp[500];
1854 int ret, port;
1855 URLContext* in = NULL;
1856 int payload_type;
1857 AVCodecContext codec;
1858 struct sockaddr_storage addr;
ae628ec1 1859 AVIOContext pb;
44594cc7
MS
1860 socklen_t addrlen = sizeof(addr);
1861
1862 if (!ff_network_init())
1863 return AVERROR(EIO);
1864
59d96941 1865 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ);
44594cc7
MS
1866 if (ret)
1867 goto fail;
1868
1869 while (1) {
bc371aca 1870 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
1871 if (ret == AVERROR(EAGAIN))
1872 continue;
1873 if (ret < 0)
1874 goto fail;
1875 if (ret < 12) {
1876 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1877 continue;
1878 }
1879
1880 if ((recvbuf[0] & 0xc0) != 0x80) {
1881 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1882 "received\n");
1883 continue;
1884 }
1885
1886 payload_type = recvbuf[1] & 0x7f;
1887 break;
1888 }
1869ea03 1889 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 1890 ffurl_close(in);
44594cc7
MS
1891 in = NULL;
1892
1893 memset(&codec, 0, sizeof(codec));
1894 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1895 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1896 "without an SDP file describing it\n",
1897 payload_type);
1898 goto fail;
1899 }
1900 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1901 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1902 "properly you need an SDP file "
1903 "describing it\n");
1904 }
1905
1906 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1907 NULL, 0, s->filename);
1908
1909 snprintf(sdp, sizeof(sdp),
1910 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1911 addr.ss_family == AF_INET ? 4 : 6, host,
1912 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1913 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1914 port, payload_type);
1915 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1916
e731b8d8 1917 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
1918 s->pb = &pb;
1919
1920 /* sdp_read_header initializes this again */
1921 ff_network_close();
1922
1923 ret = sdp_read_header(s, ap);
1924 s->pb = NULL;
1925 return ret;
1926
1927fail:
1928 if (in)
e52a9145 1929 ffurl_close(in);
44594cc7
MS
1930 ff_network_close();
1931 return ret;
1932}
1933
c6610a21 1934AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
1935 .name = "rtp",
1936 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
1937 .priv_data_size = sizeof(RTSPState),
1938 .read_probe = rtp_probe,
1939 .read_header = rtp_read_header,
1940 .read_packet = ff_rtsp_fetch_packet,
1941 .read_close = sdp_read_close,
44594cc7
MS
1942 .flags = AVFMT_NOFILE,
1943};
44b70ce5 1944#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1945