rtsp: Simplify AVOption definitions
[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
2c9aa024
MS
60#define OFFSET(x) offsetof(RTSPState, x)
61#define DEC AV_OPT_FLAG_DECODING_PARAM
17fff881 62const AVOption ff_rtsp_options[] = {
2c9aa024 63 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {0}, 0, 1, DEC },
17fff881
MS
64 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
65 { NULL },
66};
67
1ef36a70
RB
68static void get_word_until_chars(char *buf, int buf_size,
69 const char *sep, const char **pp)
1617ad97
FB
70{
71 const char *p;
72 char *q;
73
74 p = *pp;
30619e6e 75 p += strspn(p, SPACE_CHARS);
1617ad97
FB
76 q = buf;
77 while (!strchr(sep, *p) && *p != '\0') {
78 if ((q - buf) < buf_size - 1)
79 *q++ = *p;
80 p++;
81 }
82 if (buf_size > 0)
83 *q = '\0';
84 *pp = p;
85}
86
1ef36a70
RB
87static void get_word_sep(char *buf, int buf_size, const char *sep,
88 const char **pp)
1617ad97 89{
1ef36a70
RB
90 if (**pp == '/') (*pp)++;
91 get_word_until_chars(buf, buf_size, sep, pp);
92}
1617ad97 93
1ef36a70
RB
94static void get_word(char *buf, int buf_size, const char **pp)
95{
96 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
97}
98
8bf0f969
MS
99/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
100 * and end time.
101 * Used for seeking in the rtp stream.
102 */
103static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
104{
105 char buf[256];
106
107 p += strspn(p, SPACE_CHARS);
108 if (!av_stristart(p, "npt=", &p))
109 return;
110
111 *start = AV_NOPTS_VALUE;
112 *end = AV_NOPTS_VALUE;
113
114 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 115 av_parse_time(start, buf, 1);
8bf0f969
MS
116 if (*p == '-') {
117 p++;
118 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 119 av_parse_time(end, buf, 1);
8bf0f969
MS
120 }
121// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
122// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
123}
124
125static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
126{
127 struct addrinfo hints, *ai = NULL;
128 memset(&hints, 0, sizeof(hints));
129 hints.ai_flags = AI_NUMERICHOST;
130 if (getaddrinfo(buf, NULL, &hints, &ai))
131 return -1;
132 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
133 freeaddrinfo(ai);
134 return 0;
135}
136
44b70ce5 137#if CONFIG_RTPDEC
003eb642
MS
138static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
139 RTSPStream *rtsp_st, AVCodecContext *codec)
140{
141 if (!handler)
142 return;
143 codec->codec_id = handler->codec_id;
144 rtsp_st->dynamic_handler = handler;
9261e6cf
MS
145 if (handler->alloc)
146 rtsp_st->dynamic_protocol_context = handler->alloc();
003eb642
MS
147}
148
c8965800 149/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 150static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 151 AVStream *st, RTSPStream *rtsp_st,
c8965800 152 int payload_type, const char *p)
93ced3e8 153{
86b6e387 154 AVCodecContext *codec = st->codec;
93ced3e8 155 char buf[256];
d1ccf0e0
RD
156 int i;
157 AVCodec *c;
7b49ce2e 158 const char *c_name;
93ced3e8 159
d1ccf0e0 160 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
161 * see if we can handle this kind of payload.
162 * The space should normally not be there but some Real streams or
163 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
164 * have a trailing space. */
165 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 166 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
167 RTPDynamicProtocolHandler *handler =
168 ff_rtp_handler_find_by_name(buf, codec->codec_type);
169 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
170 /* If no dynamic handler was found, check with the list of standard
171 * allocated types, if such a stream for some reason happens to
172 * use a private payload type. This isn't handled in rtpdec.c, since
173 * the format name from the rtpmap line never is passed into rtpdec. */
174 if (!rtsp_st->dynamic_handler)
175 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 176 } else {
c8965800
RB
177 /* We are in a standard case
178 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 179 /* search into AVRtpPayloadTypes[] */
7ed19d7f 180 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
181 }
182
183 c = avcodec_find_decoder(codec->codec_id);
184 if (c && c->name)
7b49ce2e 185 c_name = c->name;
d1ccf0e0 186 else
170870b7 187 c_name = "(null)";
d1ccf0e0 188
7515ed0c
RB
189 get_word_sep(buf, sizeof(buf), "/", &p);
190 i = atoi(buf);
191 switch (codec->codec_type) {
72415b2a 192 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
193 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
194 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
195 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
196 if (i > 0) {
197 codec->sample_rate = i;
86b6e387 198 av_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
199 get_word_sep(buf, sizeof(buf), "/", &p);
200 i = atoi(buf);
201 if (i > 0)
202 codec->channels = i;
203 // TODO: there is a bug here; if it is a mono stream, and
204 // less than 22000Hz, faad upconverts to stereo and twice
205 // the frequency. No problem, but the sample rate is being
206 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 207 }
7515ed0c
RB
208 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
209 codec->sample_rate);
210 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
211 codec->channels);
212 break;
72415b2a 213 case AVMEDIA_TYPE_VIDEO:
7515ed0c 214 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387
MS
215 if (i > 0)
216 av_set_pts_info(st, 32, 1, i);
7515ed0c
RB
217 break;
218 default:
219 break;
220 }
221 return 0;
93ced3e8
FB
222}
223
c2bfd816 224/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
225 * is broken out as a function because it is used in rtp_h264.c, which is
226 * forthcoming. */
3307e6ea 227int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 228 char *value, int value_size)
d0deedcb 229{
30619e6e 230 *p += strspn(*p, SPACE_CHARS);
c8965800 231 if (**p) {
d0deedcb
RM
232 get_word_sep(attr, attr_size, "=", p);
233 if (**p == '=')
234 (*p)++;
235 get_word_sep(value, value_size, ";", p);
236 if (**p == ';')
237 (*p)++;
238 return 1;
239 }
240 return 0;
241}
242
93ced3e8
FB
243typedef struct SDPParseState {
244 /* SDP only */
3fbd12d1 245 struct sockaddr_storage default_ip;
c8965800
RB
246 int default_ttl;
247 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
248} SDPParseState;
249
250static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
251 int letter, const char *buf)
252{
8b1ab7bf 253 RTSPState *rt = s->priv_data;
1617ad97
FB
254 char buf1[64], st_type[64];
255 const char *p;
72415b2a 256 enum AVMediaType codec_type;
fb65d2ca 257 int payload_type, i;
1617ad97
FB
258 AVStream *st;
259 RTSPStream *rtsp_st;
3fbd12d1 260 struct sockaddr_storage sdp_ip;
93ced3e8
FB
261 int ttl;
262
dfd2a005 263 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
264
265 p = buf;
cb760a47
RB
266 if (s1->skip_media && letter != 'm')
267 return;
c8965800 268 switch (letter) {
93ced3e8
FB
269 case 'c':
270 get_word(buf1, sizeof(buf1), &p);
271 if (strcmp(buf1, "IN") != 0)
272 return;
273 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 274 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
275 return;
276 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 277 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
278 return;
279 ttl = 16;
280 if (*p == '/') {
281 p++;
282 get_word_sep(buf1, sizeof(buf1), "/", &p);
283 ttl = atoi(buf1);
284 }
285 if (s->nb_streams == 0) {
286 s1->default_ip = sdp_ip;
287 s1->default_ttl = ttl;
288 } else {
d9c0510e 289 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
290 rtsp_st->sdp_ip = sdp_ip;
291 rtsp_st->sdp_ttl = ttl;
292 }
293 break;
1617ad97 294 case 's':
d2d67e42 295 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
296 break;
297 case 'i':
298 if (s->nb_streams == 0) {
d2d67e42 299 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
300 break;
301 }
302 break;
303 case 'm':
304 /* new stream */
cb760a47 305 s1->skip_media = 0;
1617ad97
FB
306 get_word(st_type, sizeof(st_type), &p);
307 if (!strcmp(st_type, "audio")) {
72415b2a 308 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 309 } else if (!strcmp(st_type, "video")) {
72415b2a 310 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 311 } else if (!strcmp(st_type, "application")) {
72415b2a 312 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 313 } else {
cb760a47 314 s1->skip_media = 1;
1617ad97
FB
315 return;
316 }
1617ad97
FB
317 rtsp_st = av_mallocz(sizeof(RTSPStream));
318 if (!rtsp_st)
319 return;
8b1ab7bf
FB
320 rtsp_st->stream_index = -1;
321 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
322
323 rtsp_st->sdp_ip = s1->default_ip;
324 rtsp_st->sdp_ttl = s1->default_ttl;
325
93ced3e8
FB
326 get_word(buf1, sizeof(buf1), &p); /* port */
327 rtsp_st->sdp_port = atoi(buf1);
328
329 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 330
93ced3e8
FB
331 /* XXX: handle list of formats */
332 get_word(buf1, sizeof(buf1), &p); /* format list */
333 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 334
7ed19d7f 335 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
336 /* no corresponding stream */
337 } else {
b2dd842d 338 st = av_new_stream(s, rt->nb_rtsp_streams - 1);
8b1ab7bf
FB
339 if (!st)
340 return;
8b1ab7bf 341 rtsp_st->stream_index = st->index;
01f4895c 342 st->codec->codec_type = codec_type;
d1ccf0e0 343 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 344 RTPDynamicProtocolHandler *handler;
8b1ab7bf 345 /* if standard payload type, we can find the codec right now */
bf6d9818 346 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
347 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
348 st->codec->sample_rate > 0)
86b6e387 349 av_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
350 /* Even static payload types may need a custom depacketizer */
351 handler = ff_rtp_handler_find_by_id(
352 rtsp_st->sdp_payload_type, st->codec->codec_type);
353 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
354 }
355 }
1617ad97 356 /* put a default control url */
00eb13e0 357 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 358 sizeof(rtsp_st->control_url));
1617ad97
FB
359 break;
360 case 'a':
00eb13e0
AS
361 if (av_strstart(p, "control:", &p)) {
362 if (s->nb_streams == 0) {
363 if (!strncmp(p, "rtsp://", 7))
364 av_strlcpy(rt->control_uri, p,
365 sizeof(rt->control_uri));
366 } else {
0b6a7ff4
MS
367 char proto[32];
368 /* get the control url */
d9c0510e 369 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 370
0b6a7ff4
MS
371 /* XXX: may need to add full url resolution */
372 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
373 NULL, NULL, 0, p);
374 if (proto[0] == '\0') {
375 /* relative control URL */
376 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
377 av_strlcat(rtsp_st->control_url, "/",
378 sizeof(rtsp_st->control_url));
379 av_strlcat(rtsp_st->control_url, p,
380 sizeof(rtsp_st->control_url));
381 } else
382 av_strlcpy(rtsp_st->control_url, p,
383 sizeof(rtsp_st->control_url));
00eb13e0 384 }
83d14c85 385 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 386 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 387 get_word(buf1, sizeof(buf1), &p);
93ced3e8 388 payload_type = atoi(buf1);
83d14c85 389 st = s->streams[s->nb_streams - 1];
d9c0510e 390 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
86b6e387 391 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
392 } else if (av_strstart(p, "fmtp:", &p) ||
393 av_strstart(p, "framesize:", &p)) {
93ced3e8 394 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
395 // let dynamic protocol handlers have a stab at the line.
396 get_word(buf1, sizeof(buf1), &p);
397 payload_type = atoi(buf1);
d9c0510e
MS
398 for (i = 0; i < rt->nb_rtsp_streams; i++) {
399 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
400 if (rtsp_st->sdp_payload_type == payload_type &&
401 rtsp_st->dynamic_handler &&
402 rtsp_st->dynamic_handler->parse_sdp_a_line)
403 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
404 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 405 }
c8965800 406 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
407 int64_t start, end;
408
409 // this is so that seeking on a streamed file can work.
410 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
411 s->start_time = start;
412 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
413 s->duration = (end == AV_NOPTS_VALUE) ?
414 AV_NOPTS_VALUE : end - start;
119b4668
RB
415 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
416 if (atoi(p) == 1)
417 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
418 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
419 s->nb_streams > 0) {
420 st = s->streams[s->nb_streams - 1];
421 st->codec->sample_rate = atoi(p);
1a30d541
RB
422 } else {
423 if (rt->server_type == RTSP_SERVER_WMS)
424 ff_wms_parse_sdp_a_line(s, p);
425 if (s->nb_streams > 0) {
c4a3d032
RB
426 if (rt->server_type == RTSP_SERVER_REAL)
427 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
428
d9c0510e 429 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
c4a3d032
RB
430 if (rtsp_st->dynamic_handler &&
431 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
432 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
433 s->nb_streams - 1,
c4a3d032 434 rtsp_st->dynamic_protocol_context, buf);
1a30d541 435 }
1617ad97
FB
436 }
437 break;
438 }
439}
440
0526c6f7 441int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 442{
a8475bbd 443 RTSPState *rt = s->priv_data;
1617ad97
FB
444 const char *p;
445 int letter;
9211bcdd
RB
446 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
447 * contain long SDP lines containing complete ASF Headers (several
448 * kB) or arrays of MDPR (RM stream descriptor) headers plus
449 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
450 * buffer is large.
451 *
afcea58c
JA
452 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
453 * in rtpdec_xiph.c. */
373afbaf 454 char buf[16384], *q;
93ced3e8 455 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 456
93ced3e8 457 memset(s1, 0, sizeof(SDPParseState));
1617ad97 458 p = content;
c8965800 459 for (;;) {
30619e6e 460 p += strspn(p, SPACE_CHARS);
1617ad97
FB
461 letter = *p;
462 if (letter == '\0')
463 break;
464 p++;
465 if (*p != '=')
466 goto next_line;
467 p++;
468 /* get the content */
469 q = buf;
b6892136 470 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
471 if ((q - buf) < sizeof(buf) - 1)
472 *q++ = *p;
473 p++;
474 }
475 *q = '\0';
93ced3e8 476 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
477 next_line:
478 while (*p != '\n' && *p != '\0')
479 p++;
480 if (*p == '\n')
481 p++;
482 }
a8475bbd
LB
483 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
484 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
485 return 0;
486}
44b70ce5 487#endif /* CONFIG_RTPDEC */
1617ad97 488
93e7490e
MS
489void ff_rtsp_undo_setup(AVFormatContext *s)
490{
491 RTSPState *rt = s->priv_data;
492 int i;
493
494 for (i = 0; i < rt->nb_rtsp_streams; i++) {
495 RTSPStream *rtsp_st = rt->rtsp_streams[i];
496 if (!rtsp_st)
497 continue;
498 if (rtsp_st->transport_priv) {
499 if (s->oformat) {
500 AVFormatContext *rtpctx = rtsp_st->transport_priv;
501 av_write_trailer(rtpctx);
502 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
503 uint8_t *ptr;
6dc7d80d 504 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
505 av_free(ptr);
506 } else {
22a3212e 507 avio_close(rtpctx->pb);
93e7490e 508 }
b22dbb29 509 avformat_free_context(rtpctx);
93e7490e
MS
510 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
511 ff_rdt_parse_close(rtsp_st->transport_priv);
512 else if (CONFIG_RTPDEC)
bfc6db44 513 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
514 }
515 rtsp_st->transport_priv = NULL;
516 if (rtsp_st->rtp_handle)
e52a9145 517 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
518 rtsp_st->rtp_handle = NULL;
519 }
520}
521
1ced9da3 522/* close and free RTSP streams */
3307e6ea 523void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 524{
52aa4338 525 RTSPState *rt = s->priv_data;
1ced9da3
LA
526 int i;
527 RTSPStream *rtsp_st;
528
93e7490e 529 ff_rtsp_undo_setup(s);
c8965800 530 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
531 rtsp_st = rt->rtsp_streams[i];
532 if (rtsp_st) {
1ced9da3 533 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 534 rtsp_st->dynamic_handler->free(
c8965800 535 rtsp_st->dynamic_protocol_context);
ea7f0807 536 av_free(rtsp_st);
1ced9da3
LA
537 }
538 }
539 av_free(rt->rtsp_streams);
540 if (rt->asf_ctx) {
541 av_close_input_stream (rt->asf_ctx);
542 rt->asf_ctx = NULL;
543 }
a8475bbd 544 av_free(rt->p);
96a7c975 545 av_free(rt->recvbuf);
1ced9da3
LA
546}
547
c8965800 548static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
549{
550 RTSPState *rt = s->priv_data;
551 AVStream *st = NULL;
552
553 /* open the RTP context */
554 if (rtsp_st->stream_index >= 0)
555 st = s->streams[rtsp_st->stream_index];
556 if (!st)
557 s->ctx_flags |= AVFMTCTX_NOHEADER;
558
44b70ce5 559 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
560 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
561 rtsp_st->rtp_handle,
562 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 563 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 564 rtsp_st->rtp_handle = NULL;
44b70ce5 565 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
566 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
567 rtsp_st->dynamic_protocol_context,
568 rtsp_st->dynamic_handler);
44b70ce5 569 else if (CONFIG_RTPDEC)
bfc6db44 570 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
571 rtsp_st->sdp_payload_type,
572 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
573 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
574
575 if (!rtsp_st->transport_priv) {
576 return AVERROR(ENOMEM);
44b70ce5 577 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 578 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
579 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
580 rtsp_st->dynamic_protocol_context,
581 rtsp_st->dynamic_handler);
1ced9da3
LA
582 }
583 }
584
585 return 0;
586}
587
6f5a3d0a 588#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
589static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
590{
591 const char *p;
592 int v;
593
594 p = *pp;
30619e6e 595 p += strspn(p, SPACE_CHARS);
1617ad97
FB
596 v = strtol(p, (char **)&p, 10);
597 if (*p == '-') {
598 p++;
599 *min_ptr = v;
600 v = strtol(p, (char **)&p, 10);
601 *max_ptr = v;
602 } else {
603 *min_ptr = v;
604 *max_ptr = v;
605 }
606 *pp = p;
607}
608
609/* XXX: only one transport specification is parsed */
a9e534d5 610static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
611{
612 char transport_protocol[16];
613 char profile[16];
614 char lower_transport[16];
615 char parameter[16];
616 RTSPTransportField *th;
617 char buf[256];
115329f1 618
1617ad97 619 reply->nb_transports = 0;
115329f1 620
c8965800 621 for (;;) {
30619e6e 622 p += strspn(p, SPACE_CHARS);
1617ad97
FB
623 if (*p == '\0')
624 break;
625
626 th = &reply->transports[reply->nb_transports];
627
115329f1 628 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 629 "/", &p);
e1502118 630 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
631 get_word_sep(profile, sizeof(profile), "/;,", &p);
632 lower_transport[0] = '\0';
633 /* rtp/avp/<protocol> */
634 if (*p == '/') {
7ecc634e
LB
635 get_word_sep(lower_transport, sizeof(lower_transport),
636 ";,", &p);
119b4668
RB
637 }
638 th->transport = RTSP_TRANSPORT_RTP;
639 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
640 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 641 /* x-pn-tng/<protocol> */
e1502118
LB
642 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
643 profile[0] = '\0';
119b4668 644 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 645 }
b6892136 646 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 647 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 648 else
90abbdba 649 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 650
1617ad97
FB
651 if (*p == ';')
652 p++;
653 /* get each parameter */
654 while (*p != '\0' && *p != ',') {
655 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
656 if (!strcmp(parameter, "port")) {
657 if (*p == '=') {
658 p++;
659 rtsp_parse_range(&th->port_min, &th->port_max, &p);
660 }
661 } else if (!strcmp(parameter, "client_port")) {
662 if (*p == '=') {
663 p++;
115329f1 664 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
665 &th->client_port_max, &p);
666 }
667 } else if (!strcmp(parameter, "server_port")) {
668 if (*p == '=') {
669 p++;
115329f1 670 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
671 &th->server_port_max, &p);
672 }
673 } else if (!strcmp(parameter, "interleaved")) {
674 if (*p == '=') {
675 p++;
115329f1 676 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
677 &th->interleaved_max, &p);
678 }
679 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
680 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
681 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
682 } else if (!strcmp(parameter, "ttl")) {
683 if (*p == '=') {
684 p++;
685 th->ttl = strtol(p, (char **)&p, 10);
686 }
687 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
688 if (*p == '=') {
689 p++;
690 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 691 get_sockaddr(buf, &th->destination);
1617ad97 692 }
619298a8
JW
693 } else if (!strcmp(parameter, "source")) {
694 if (*p == '=') {
695 p++;
696 get_word_sep(buf, sizeof(buf), ";,", &p);
697 av_strlcpy(th->source, buf, sizeof(th->source));
698 }
1617ad97 699 }
619298a8 700
1617ad97
FB
701 while (*p != ';' && *p != '\0' && *p != ',')
702 p++;
703 if (*p == ';')
704 p++;
705 }
706 if (*p == ',')
707 p++;
708
709 reply->nb_transports++;
710 }
711}
712
29db7c3a
MS
713static void handle_rtp_info(RTSPState *rt, const char *url,
714 uint32_t seq, uint32_t rtptime)
715{
716 int i;
717 if (!rtptime || !url[0])
718 return;
719 if (rt->transport != RTSP_TRANSPORT_RTP)
720 return;
721 for (i = 0; i < rt->nb_rtsp_streams; i++) {
722 RTSPStream *rtsp_st = rt->rtsp_streams[i];
723 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
724 if (!rtpctx)
725 continue;
726 if (!strcmp(rtsp_st->control_url, url)) {
727 rtpctx->base_timestamp = rtptime;
728 break;
729 }
730 }
731}
732
733static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
734{
735 int read = 0;
736 char key[20], value[1024], url[1024] = "";
737 uint32_t seq = 0, rtptime = 0;
738
739 for (;;) {
740 p += strspn(p, SPACE_CHARS);
741 if (!*p)
742 break;
743 get_word_sep(key, sizeof(key), "=", &p);
744 if (*p != '=')
745 break;
746 p++;
747 get_word_sep(value, sizeof(value), ";, ", &p);
748 read++;
749 if (!strcmp(key, "url"))
750 av_strlcpy(url, value, sizeof(url));
751 else if (!strcmp(key, "seq"))
4515f9b5 752 seq = strtoul(value, NULL, 10);
29db7c3a 753 else if (!strcmp(key, "rtptime"))
4515f9b5 754 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
755 if (*p == ',') {
756 handle_rtp_info(rt, url, seq, rtptime);
757 url[0] = '\0';
758 seq = rtptime = 0;
759 read = 0;
760 }
761 if (*p)
762 p++;
763 }
764 if (read > 0)
765 handle_rtp_info(rt, url, seq, rtptime);
766}
767
2626308a 768void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 769 RTSPState *rt, const char *method)
1617ad97
FB
770{
771 const char *p;
772
773 /* NOTE: we do case independent match for broken servers */
774 p = buf;
f7d78f36 775 if (av_stristart(p, "Session:", &p)) {
30e79845 776 int t;
1617ad97 777 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
778 if (av_stristart(p, ";timeout=", &p) &&
779 (t = strtol(p, NULL, 10)) > 0) {
780 reply->timeout = t;
781 }
f7d78f36 782 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 783 reply->content_length = strtol(p, NULL, 10);
f7d78f36 784 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 785 rtsp_parse_transport(reply, p);
f7d78f36 786 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 787 reply->seq = strtol(p, NULL, 10);
f7d78f36 788 } else if (av_stristart(p, "Range:", &p)) {
31693e00 789 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 790 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 791 p += strspn(p, SPACE_CHARS);
30aa6aed 792 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 793 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 794 p += strspn(p, SPACE_CHARS);
7a86bafa 795 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
796 } else if (av_stristart(p, "Notice:", &p) ||
797 av_stristart(p, "X-Notice:", &p)) {
798 reply->notice = strtol(p, NULL, 10);
d243ba30 799 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 800 p += strspn(p, SPACE_CHARS);
d243ba30 801 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 802 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 803 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
804 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
805 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 806 p += strspn(p, SPACE_CHARS);
acc9ed14 807 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 808 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 809 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
810 if (method && !strcmp(method, "DESCRIBE"))
811 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
812 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
813 p += strspn(p, SPACE_CHARS);
814 if (method && !strcmp(method, "PLAY"))
815 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
816 } else if (av_stristart(p, "Public:", &p) && rt) {
817 if (strstr(p, "GET_PARAMETER") &&
818 method && !strcmp(method, "OPTIONS"))
819 rt->get_parameter_supported = 1;
30eae325
MS
820 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
821 p += strspn(p, SPACE_CHARS);
822 rt->accept_dynamic_rate = atoi(p);
1617ad97
FB
823 }
824}
825
b7b8fc34 826/* skip a RTP/TCP interleaved packet */
ec55edba 827void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
828{
829 RTSPState *rt = s->priv_data;
830 int ret, len, len1;
831 uint8_t buf[1024];
832
dce37564 833 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
834 if (ret != 3)
835 return;
80fb8234 836 len = AV_RB16(buf + 1);
67c9cd69 837
dfd2a005 838 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 839
b7b8fc34
FB
840 /* skip payload */
841 while (len > 0) {
842 len1 = len;
843 if (len1 > sizeof(buf))
844 len1 = sizeof(buf);
dce37564 845 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
846 if (ret != len1)
847 return;
848 len -= len1;
849 }
850}
1617ad97 851
3307e6ea 852int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 853 unsigned char **content_ptr,
3df54c6b 854 int return_on_interleaved_data, const char *method)
1617ad97
FB
855{
856 RTSPState *rt = s->priv_data;
857 char buf[4096], buf1[1024], *q;
858 unsigned char ch;
859 const char *p;
7e726132 860 int ret, content_length, line_count = 0;
1617ad97
FB
861 unsigned char *content = NULL;
862
d541a7d2 863 memset(reply, 0, sizeof(*reply));
1617ad97 864
1617ad97 865 /* parse reply (XXX: use buffers) */
1617ad97 866 rt->last_reply[0] = '\0';
c8965800 867 for (;;) {
1617ad97 868 q = buf;
c8965800 869 for (;;) {
dce37564 870 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 871 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 872 if (ret != 1)
2401660d 873 return AVERROR_EOF;
1617ad97
FB
874 if (ch == '\n')
875 break;
b7b8fc34
FB
876 if (ch == '$') {
877 /* XXX: only parse it if first char on line ? */
7e726132
RB
878 if (return_on_interleaved_data) {
879 return 1;
880 } else
ec55edba 881 ff_rtsp_skip_packet(s);
b7b8fc34 882 } else if (ch != '\r') {
1617ad97
FB
883 if ((q - buf) < sizeof(buf) - 1)
884 *q++ = ch;
885 }
886 }
887 *q = '\0';
67c9cd69 888
dfd2a005 889 av_dlog(s, "line='%s'\n", buf);
67c9cd69 890
1617ad97
FB
891 /* test if last line */
892 if (buf[0] == '\0')
893 break;
894 p = buf;
895 if (line_count == 0) {
896 /* get reply code */
897 get_word(buf1, sizeof(buf1), &p);
898 get_word(buf1, sizeof(buf1), &p);
899 reply->status_code = atoi(buf1);
d93fdcbf 900 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 901 } else {
77223c53 902 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
903 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
904 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
905 }
906 line_count++;
907 }
115329f1 908
1617ad97 909 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 910 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 911
1617ad97
FB
912 content_length = reply->content_length;
913 if (content_length > 0) {
914 /* leave some room for a trailing '\0' (useful for simple parsing) */
915 content = av_malloc(content_length + 1);
dce37564 916 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
917 content[content_length] = '\0';
918 }
919 if (content_ptr)
920 *content_ptr = content;
e2e2e7dd
AB
921 else
922 av_free(content);
7e726132 923
7ed8211b
LB
924 if (rt->seq != reply->seq) {
925 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
926 rt->seq, reply->seq);
927 }
928
fccb1770
RB
929 /* EOS */
930 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
931 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 932 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 933 rt->state = RTSP_STATE_IDLE;
c8965800 934 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 935 return AVERROR(EIO); /* data or server error */
c8965800 936 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
937 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
938 return AVERROR(EPERM);
939
7e726132 940 return 0;
1617ad97
FB
941}
942
57c4d01e
DEP
943/**
944 * Send a command to the RTSP server without waiting for the reply.
945 *
946 * @param s RTSP (de)muxer context
947 * @param method the method for the request
948 * @param url the target url for the request
949 * @param headers extra header lines to include in the request
950 * @param send_content if non-null, the data to send as request body content
951 * @param send_content_length the length of the send_content data, or 0 if
952 * send_content is null
953 *
954 * @return zero if success, nonzero otherwise
955 */
956static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
957 const char *method, const char *url,
958 const char *headers,
959 const unsigned char *send_content,
960 int send_content_length)
29b9f58b
RB
961{
962 RTSPState *rt = s->priv_data;
f5d33f52
JA
963 char buf[4096], *out_buf;
964 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 965
f5d33f52
JA
966 /* Add in RTSP headers */
967 out_buf = buf;
29b9f58b 968 rt->seq++;
b17d11c6
MS
969 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
970 if (headers)
971 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 972 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
973 if (rt->session_id[0] != '\0' && (!headers ||
974 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 975 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 976 }
aa8bf2fb
MS
977 if (rt->auth[0]) {
978 char *str = ff_http_auth_create_response(&rt->auth_state,
979 rt->auth, url, method);
980 if (str)
981 av_strlcat(buf, str, sizeof(buf));
982 av_free(str);
983 }
dfd017bf
MS
984 if (send_content_length > 0 && send_content)
985 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 986 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 987
f5d33f52
JA
988 /* base64 encode rtsp if tunneling */
989 if (rt->control_transport == RTSP_MODE_TUNNEL) {
990 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
991 out_buf = base64buf;
992 }
993
dfd2a005 994 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 995
925e908b 996 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
997 if (send_content_length > 0 && send_content) {
998 if (rt->control_transport == RTSP_MODE_TUNNEL) {
999 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1000 "with content data not supported\n");
1001 return AVERROR_PATCHWELCOME;
1002 }
925e908b 1003 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1004 }
30e79845 1005 rt->last_cmd_time = av_gettime();
d0382374
JA
1006
1007 return 0;
30e79845
RB
1008}
1009
d0382374 1010int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1011 const char *url, const char *headers)
dfd017bf 1012{
d0382374 1013 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1014}
1015
d0382374 1016int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1017 const char *headers, RTSPMessageHeader *reply,
1018 unsigned char **content_ptr)
30e79845 1019{
d0382374 1020 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1021 content_ptr, NULL, 0);
29b9f58b
RB
1022}
1023
d0382374 1024int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1025 const char *method, const char *url,
1026 const char *header,
1027 RTSPMessageHeader *reply,
1028 unsigned char **content_ptr,
1029 const unsigned char *send_content,
1030 int send_content_length)
dfd017bf 1031{
30af0779
MS
1032 RTSPState *rt = s->priv_data;
1033 HTTPAuthType cur_auth_type;
d0382374 1034 int ret;
30af0779
MS
1035
1036retry:
1037 cur_auth_type = rt->auth_state.auth_type;
d0382374 1038 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1039 send_content,
1040 send_content_length)))
d0382374 1041 return ret;
dfd017bf 1042
3df54c6b 1043 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1044 return ret;
30af0779
MS
1045
1046 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1047 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1048 goto retry;
d0382374 1049
bf55cf19 1050 if (reply->status_code > 400){
d93fdcbf 1051 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1052 method,
d93fdcbf
LB
1053 reply->status_code,
1054 reply->reason);
bf55cf19
LB
1055 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1056 }
1057
d0382374 1058 return 0;
dfd017bf
MS
1059}
1060
fef5649a 1061int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1062 int lower_transport, const char *real_challenge)
1617ad97
FB
1063{
1064 RTSPState *rt = s->priv_data;
f830c9a4 1065 int rtx, j, i, err, interleave = 0;
1617ad97 1066 RTSPStream *rtsp_st;
a9e534d5 1067 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1068 char cmd[2048];
e9dea59f
RB
1069 const char *trans_pref;
1070
119b4668 1071 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1072 trans_pref = "x-pn-tng";
1073 else
1074 trans_pref = "RTP/AVP";
115329f1 1075
30e79845
RB
1076 /* default timeout: 1 minute */
1077 rt->timeout = 60;
1078
1617ad97
FB
1079 /* for each stream, make the setup request */
1080 /* XXX: we assume the same server is used for the control of each
c8965800 1081 * RTSP stream */
d1ccf0e0 1082
c8965800 1083 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1084 char transport[2048];
1085
f75e3da5 1086 /*
f830c9a4
RB
1087 * WMS serves all UDP data over a single connection, the RTX, which
1088 * isn't necessarily the first in the SDP but has to be the first
1089 * to be set up, else the second/third SETUP will fail with a 461.
1090 */
1091 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1092 rt->server_type == RTSP_SERVER_WMS) {
1093 if (i == 0) {
1094 /* rtx first */
1095 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1096 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1097 if (len >= 4 &&
c8965800
RB
1098 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1099 "/rtx"))
f830c9a4
RB
1100 break;
1101 }
1102 if (rtx == rt->nb_rtsp_streams)
1103 return -1; /* no RTX found */
1104 rtsp_st = rt->rtsp_streams[rtx];
1105 } else
1106 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1107 } else
2fea9650 1108 rtsp_st = rt->rtsp_streams[i];
1617ad97 1109
1617ad97 1110 /* RTP/UDP */
90abbdba 1111 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1112 char buf[256];
85fb7b34 1113
f830c9a4
RB
1114 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1115 port = reply->transports[0].client_port_min;
1116 goto have_port;
1117 }
1118
85fb7b34 1119 /* first try in specified port range */
d1ccf0e0 1120 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1121 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1122 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1123 "?localport=%d", j);
c8965800
RB
1124 /* we will use two ports per rtp stream (rtp and rtcp) */
1125 j += 2;
59d96941 1126 if (ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE) == 0)
85fb7b34
FB
1127 goto rtp_opened;
1128 }
1617ad97 1129 }
85fb7b34 1130
a3b058b7
MS
1131 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1132 err = AVERROR(EIO);
1133 goto fail;
85fb7b34
FB
1134
1135 rtp_opened:
bfc6db44 1136 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1137 have_port:
0ad306bc 1138 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1139 "%s/UDP;", trans_pref);
1140 if (rt->server_type != RTSP_SERVER_REAL)
1141 av_strlcat(transport, "unicast;", sizeof(transport));
1142 av_strlcatf(transport, sizeof(transport),
1143 "client_port=%d", port);
f830c9a4
RB
1144 if (rt->transport == RTSP_TRANSPORT_RTP &&
1145 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1146 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1147 }
1148
1149 /* RTP/TCP */
90abbdba 1150 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1151 /* For WMS streams, the application streams are only used for
090438cc
RB
1152 * UDP. When trying to set it up for TCP streams, the server
1153 * will return an error. Therefore, we skip those streams. */
1154 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1155 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1156 AVMEDIA_TYPE_DATA)
090438cc 1157 continue;
0ad306bc 1158 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1159 "%s/TCP;", trans_pref);
895678f8 1160 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1161 av_strlcat(transport, "unicast;", sizeof(transport));
1162 av_strlcatf(transport, sizeof(transport),
1163 "interleaved=%d-%d",
1164 interleave, interleave + 1);
1165 interleave += 2;
1617ad97
FB
1166 }
1167
90abbdba 1168 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1169 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1170 "%s/UDP;multicast", trans_pref);
1617ad97 1171 }
69adcc4f
MS
1172 if (s->oformat) {
1173 av_strlcat(transport, ";mode=receive", sizeof(transport));
1174 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1175 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1176 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1177 snprintf(cmd, sizeof(cmd),
b6892136 1178 "Transport: %s\r\n",
b17d11c6 1179 transport);
76b0d03d
MS
1180 if (rt->accept_dynamic_rate)
1181 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1182 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1183 char real_res[41], real_csum[9];
1184 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1185 real_challenge);
1186 av_strlcatf(cmd, sizeof(cmd),
1187 "If-Match: %s\r\n"
1188 "RealChallenge2: %s, sd=%s\r\n",
1189 rt->session_id, real_res, real_csum);
1190 }
b17d11c6 1191 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1192 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1193 err = 1;
1194 goto fail;
7e6ca34f
RB
1195 } else if (reply->status_code != RTSP_STATUS_OK ||
1196 reply->nb_transports != 1) {
1617ad97
FB
1197 err = AVERROR_INVALIDDATA;
1198 goto fail;
1199 }
1200
1201 /* XXX: same protocol for all streams is required */
1202 if (i > 0) {
119b4668
RB
1203 if (reply->transports[0].lower_transport != rt->lower_transport ||
1204 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1205 err = AVERROR_INVALIDDATA;
1206 goto fail;
1207 }
1208 } else {
90abbdba 1209 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1210 rt->transport = reply->transports[0].transport;
1617ad97
FB
1211 }
1212
8c579c1c
MS
1213 /* Fail if the server responded with another lower transport mode
1214 * than what we requested. */
1215 if (reply->transports[0].lower_transport != lower_transport) {
1216 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1217 err = AVERROR_INVALIDDATA;
1218 goto fail;
1617ad97
FB
1219 }
1220
90abbdba
RB
1221 switch(reply->transports[0].lower_transport) {
1222 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1223 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1224 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1225 break;
115329f1 1226
c8965800 1227 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1228 char url[1024], options[30] = "";
c8965800 1229
a92c30d7
MS
1230 if (rt->filter_source)
1231 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1232 /* Use source address if specified */
1233 if (reply->transports[0].source[0]) {
1234 ff_url_join(url, sizeof(url), "rtp", NULL,
1235 reply->transports[0].source,
d8407339 1236 reply->transports[0].server_port_min, "%s", options);
619298a8 1237 } else {
7bac991f 1238 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1239 reply->transports[0].server_port_min, "%s", options);
619298a8 1240 }
c8965800 1241 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1242 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1243 err = AVERROR_INVALIDDATA;
1244 goto fail;
1617ad97 1245 }
9c8fa20d
MS
1246 /* Try to initialize the connection state in a
1247 * potential NAT router by sending dummy packets.
1248 * RTP/RTCP dummy packets are used for RDT, too.
1249 */
44b70ce5
MS
1250 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1251 CONFIG_RTPDEC)
bfc6db44 1252 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1253 break;
c8965800
RB
1254 }
1255 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1256 char url[1024], namebuf[50];
1257 struct sockaddr_storage addr;
c8965800
RB
1258 int port, ttl;
1259
7934b15d
MS
1260 if (reply->transports[0].destination.ss_family) {
1261 addr = reply->transports[0].destination;
c8965800
RB
1262 port = reply->transports[0].port_min;
1263 ttl = reply->transports[0].ttl;
1264 } else {
7934b15d 1265 addr = rtsp_st->sdp_ip;
c8965800
RB
1266 port = rtsp_st->sdp_port;
1267 ttl = rtsp_st->sdp_ttl;
1268 }
7934b15d
MS
1269 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1270 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1271 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1272 port, "?ttl=%d", ttl);
59d96941 1273 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE) < 0) {
c8965800
RB
1274 err = AVERROR_INVALIDDATA;
1275 goto fail;
1617ad97
FB
1276 }
1277 break;
1278 }
c8965800 1279 }
d1ccf0e0 1280
ee0cb67f 1281 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1282 goto fail;
1617ad97
FB
1283 }
1284
30e79845
RB
1285 if (reply->timeout > 0)
1286 rt->timeout = reply->timeout;
1287
2e889ae4 1288 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1289 rt->need_subscription = 1;
1290
53620bba
RB
1291 return 0;
1292
1293fail:
aeb2de1c 1294 ff_rtsp_undo_setup(s);
53620bba
RB
1295 return err;
1296}
1297
b8c2c41d
JA
1298void ff_rtsp_close_connections(AVFormatContext *s)
1299{
1300 RTSPState *rt = s->priv_data;
e52a9145
AK
1301 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1302 ffurl_close(rt->rtsp_hd);
6217b645 1303 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1304}
1305
3307e6ea 1306int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1307{
1308 RTSPState *rt = s->priv_data;
921da217
LB
1309 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1310 char *option_list, *option, *filename;
03f8fc08 1311 int port, err, tcp_fd;
354b7573 1312 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1313 int lower_transport_mask = 0;
2762a7a2 1314 char real_challenge[64] = "";
03f8fc08
MS
1315 struct sockaddr_storage peer;
1316 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1317
1318 if (!ff_network_init())
1319 return AVERROR(EIO);
c8965800 1320redirect:
f5d33f52 1321 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1322 /* extract hostname and port */
f3bfe388 1323 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1324 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1325 if (*auth) {
aa8bf2fb 1326 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1327 }
53620bba
RB
1328 if (port < 0)
1329 port = RTSP_DEFAULT_PORT;
1330
1331 /* search for options */
602eb779 1332 option_list = strrchr(path, '?');
53620bba 1333 if (option_list) {
2a21adf9
MS
1334 /* Strip out the RTSP specific options, write out the rest of
1335 * the options back into the same string. */
1336 filename = option_list;
c8965800 1337 while (option_list) {
53620bba 1338 /* move the option pointer */
921da217 1339 option = ++option_list;
53620bba
RB
1340 option_list = strchr(option_list, '&');
1341 if (option_list)
921da217
LB
1342 *option_list = 0;
1343
53620bba 1344 /* handle the options */
c8965800 1345 if (!strcmp(option, "udp")) {
7a033e08 1346 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1347 } else if (!strcmp(option, "multicast")) {
7a033e08 1348 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1349 } else if (!strcmp(option, "tcp")) {
7a033e08 1350 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1351 } else if(!strcmp(option, "http")) {
1352 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1353 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7
MS
1354 } else if (!strcmp(option, "filter_src")) {
1355 rt->filter_source = 1;
c8965800 1356 } else {
2a21adf9
MS
1357 /* Write options back into the buffer, using memmove instead
1358 * of strcpy since the strings may overlap. */
1359 int len = strlen(option);
1360 memmove(++filename, option, len);
1361 filename += len;
921da217
LB
1362 if (option_list) *filename = '&';
1363 }
53620bba 1364 }
921da217 1365 *filename = 0;
53620bba
RB
1366 }
1367
90abbdba 1368 if (!lower_transport_mask)
2a1d51c5 1369 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1370
3e24c770 1371 if (s->oformat) {
b7dc88fc
MS
1372 /* Only UDP or TCP - UDP multicast isn't supported. */
1373 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1374 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1375 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1376 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1377 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1378 err = AVERROR(EINVAL);
1379 goto fail;
1380 }
1381 }
1382
4bc5cc23
MS
1383 /* Construct the URI used in request; this is similar to s->filename,
1384 * but with authentication credentials removed and RTSP specific options
1385 * stripped out. */
1386 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1387 host, port, "%s", path);
1388
f5d33f52
JA
1389 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1390 /* set up initial handshake for tunneling */
1391 char httpname[1024];
1392 char sessioncookie[17];
1393 char headers[1024];
1394
10ed37b5 1395 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1396 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1397 av_get_random_seed(), av_get_random_seed());
1398
1399 /* GET requests */
59d96941 1400 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ) < 0) {
f5d33f52
JA
1401 err = AVERROR(EIO);
1402 goto fail;
1403 }
1404
1405 /* generate GET headers */
1406 snprintf(headers, sizeof(headers),
1407 "x-sessioncookie: %s\r\n"
1408 "Accept: application/x-rtsp-tunnelled\r\n"
1409 "Pragma: no-cache\r\n"
1410 "Cache-Control: no-cache\r\n",
1411 sessioncookie);
00e4a1f4 1412 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1413
1414 /* complete the connection */
62eaaeac 1415 if (ffurl_connect(rt->rtsp_hd)) {
f5d33f52
JA
1416 err = AVERROR(EIO);
1417 goto fail;
1418 }
1419
1420 /* POST requests */
59d96941 1421 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE) < 0 ) {
f5d33f52
JA
1422 err = AVERROR(EIO);
1423 goto fail;
1424 }
1425
1426 /* generate POST headers */
1427 snprintf(headers, sizeof(headers),
1428 "x-sessioncookie: %s\r\n"
1429 "Content-Type: application/x-rtsp-tunnelled\r\n"
1430 "Pragma: no-cache\r\n"
1431 "Cache-Control: no-cache\r\n"
1432 "Content-Length: 32767\r\n"
1433 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1434 sessioncookie);
00e4a1f4
JA
1435 ff_http_set_headers(rt->rtsp_hd_out, headers);
1436 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1437
a8ead332
MS
1438 /* Initialize the authentication state for the POST session. The HTTP
1439 * protocol implementation doesn't properly handle multi-pass
1440 * authentication for POST requests, since it would require one of
1441 * the following:
1442 * - implementing Expect: 100-continue, which many HTTP servers
1443 * don't support anyway, even less the RTSP servers that do HTTP
1444 * tunneling
1445 * - sending the whole POST data until getting a 401 reply specifying
1446 * what authentication method to use, then resending all that data
1447 * - waiting for potential 401 replies directly after sending the
1448 * POST header (waiting for some unspecified time)
1449 * Therefore, we copy the full auth state, which works for both basic
1450 * and digest. (For digest, we would have to synchronize the nonce
1451 * count variable between the two sessions, if we'd do more requests
1452 * with the original session, though.)
1453 */
1454 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1455
9290f15d 1456 /* complete the connection */
62eaaeac 1457 if (ffurl_connect(rt->rtsp_hd_out)) {
9290f15d
MS
1458 err = AVERROR(EIO);
1459 goto fail;
1460 }
f5d33f52 1461 } else {
48e77473 1462 /* open the tcp connection */
41874d0a 1463 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
59d96941 1464 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE) < 0) {
41874d0a
JA
1465 err = AVERROR(EIO);
1466 goto fail;
1467 }
00e4a1f4 1468 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1469 }
53620bba
RB
1470 rt->seq = 0;
1471
1869ea03 1472 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1473 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1474 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1475 NULL, 0, NI_NUMERICHOST);
1476 }
1477
c8965800
RB
1478 /* request options supported by the server; this also detects server
1479 * type */
1cf151e9 1480 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1481 cmd[0] = 0;
2e889ae4 1482 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1483 av_strlcat(cmd,
f75e3da5 1484 /*
1cf151e9
RB
1485 * The following entries are required for proper
1486 * streaming from a Realmedia server. They are
1487 * interdependent in some way although we currently
1488 * don't quite understand how. Values were copied
1489 * from mplayer SVN r23589.
f75e3da5
DB
1490 * ClientChallenge is a 16-byte ID in hex
1491 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1492 */
1493 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1494 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1495 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1496 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1497 sizeof(cmd));
b17d11c6 1498 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1499 if (reply->status_code != RTSP_STATUS_OK) {
1500 err = AVERROR_INVALIDDATA;
1501 goto fail;
1502 }
1503
1504 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1505 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1506 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1507 continue;
7a86bafa
RB
1508 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1509 rt->server_type = RTSP_SERVER_WMS;
c8965800 1510 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1511 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1512 break;
1513 }
1514
44b70ce5 1515 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1516 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1517 else if (CONFIG_RTSP_MUXER)
c2688f3a 1518 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1519 if (err)
53620bba 1520 goto fail;
53620bba 1521
8a8754d8 1522 do {
c8965800
RB
1523 int lower_transport = ff_log2_tab[lower_transport_mask &
1524 ~(lower_transport_mask - 1)];
8a8754d8 1525
fef5649a 1526 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1527 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1528 real_challenge : NULL);
8a8754d8 1529 if (err < 0)
7e6ca34f 1530 goto fail;
90abbdba
RB
1531 lower_transport_mask &= ~(1 << lower_transport);
1532 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1533 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1534 goto fail;
1535 }
1536 } while (err);
53620bba 1537
2762a7a2
MS
1538 rt->lower_transport_mask = lower_transport_mask;
1539 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1540 rt->state = RTSP_STATE_IDLE;
c8965800 1541 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1542 return 0;
1543 fail:
3307e6ea 1544 ff_rtsp_close_streams(s);
b8c2c41d 1545 ff_rtsp_close_connections(s);
35cfd646 1546 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1547 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1548 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1549 reply->status_code,
1550 s->filename);
1551 goto redirect;
1552 }
57b5555c 1553 ff_network_close();
1617ad97
FB
1554 return err;
1555}
2e802e38 1556#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1557
44b70ce5 1558#if CONFIG_RTPDEC
0e59034e 1559static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1560 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1561{
1562 RTSPState *rt = s->priv_data;
1563 RTSPStream *rtsp_st;
a8475bbd
LB
1564 int n, i, ret, tcp_fd, timeout_cnt = 0;
1565 int max_p = 0;
1566 struct pollfd *p = rt->p;
0e59034e 1567
c8965800 1568 for (;;) {
0e59034e 1569 if (url_interrupt_cb())
c76374c6 1570 return AVERROR_EXIT;
321259c1
MS
1571 if (wait_end && wait_end - av_gettime() < 0)
1572 return AVERROR(EAGAIN);
a8475bbd 1573 max_p = 0;
0e59034e 1574 if (rt->rtsp_hd) {
1869ea03 1575 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1576 p[max_p].fd = tcp_fd;
1577 p[max_p++].events = POLLIN;
0e59034e 1578 } else {
0e59034e
RB
1579 tcp_fd = -1;
1580 }
c8965800 1581 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1582 rtsp_st = rt->rtsp_streams[i];
1583 if (rtsp_st->rtp_handle) {
1869ea03 1584 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1585 p[max_p++].events = POLLIN;
bfc6db44 1586 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1587 p[max_p++].events = POLLIN;
0e59034e
RB
1588 }
1589 }
a8475bbd 1590 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1591 if (n > 0) {
a8475bbd 1592 int j = 1 - (tcp_fd == -1);
9cba6f5f 1593 timeout_cnt = 0;
c8965800 1594 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1595 rtsp_st = rt->rtsp_streams[i];
1596 if (rtsp_st->rtp_handle) {
a8475bbd 1597 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1598 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1599 if (ret > 0) {
1600 *prtsp_st = rtsp_st;
1601 return ret;
1602 }
1603 }
a8475bbd 1604 j+=2;
0e59034e
RB
1605 }
1606 }
5fe8021a 1607#if CONFIG_RTSP_DEMUXER
a8475bbd 1608 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1609 RTSPMessageHeader reply;
1610
3df54c6b 1611 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1612 if (ret < 0)
1613 return ret;
0e59034e 1614 /* XXX: parse message */
c02fd3d2 1615 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1616 return 0;
1617 }
5fe8021a 1618#endif
9cba6f5f 1619 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1620 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1621 } else if (n < 0 && errno != EINTR)
1622 return AVERROR(errno);
0e59034e
RB
1623 }
1624}
1625
0526c6f7 1626int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1627{
1628 RTSPState *rt = s->priv_data;
1629 int ret, len;
321259c1
MS
1630 RTSPStream *rtsp_st, *first_queue_st = NULL;
1631 int64_t wait_end = 0;
0e59034e 1632
b20359f5
JA
1633 if (rt->nb_byes == rt->nb_rtsp_streams)
1634 return AVERROR_EOF;
1635
0e59034e
RB
1636 /* get next frames from the same RTP packet */
1637 if (rt->cur_transport_priv) {
c8965800 1638 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1639 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1640 } else
bfc6db44 1641 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1642 if (ret == 0) {
1643 rt->cur_transport_priv = NULL;
1644 return 0;
1645 } else if (ret == 1) {
1646 return 0;
c8965800 1647 } else
0e59034e 1648 rt->cur_transport_priv = NULL;
0e59034e
RB
1649 }
1650
321259c1
MS
1651 if (rt->transport == RTSP_TRANSPORT_RTP) {
1652 int i;
1653 int64_t first_queue_time = 0;
1654 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1655 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1656 int64_t queue_time;
1657 if (!rtpctx)
1658 continue;
1659 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1660 if (queue_time && (queue_time - first_queue_time < 0 ||
1661 !first_queue_time)) {
1662 first_queue_time = queue_time;
1663 first_queue_st = rt->rtsp_streams[i];
1664 }
1665 }
1666 if (first_queue_time)
1667 wait_end = first_queue_time + s->max_delay;
1668 }
1669
0e59034e
RB
1670 /* read next RTP packet */
1671 redo:
96a7c975
MS
1672 if (!rt->recvbuf) {
1673 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1674 if (!rt->recvbuf)
1675 return AVERROR(ENOMEM);
1676 }
1677
0e59034e
RB
1678 switch(rt->lower_transport) {
1679 default:
5fe8021a 1680#if CONFIG_RTSP_DEMUXER
0e59034e 1681 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1682 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1683 break;
5fe8021a 1684#endif
0e59034e
RB
1685 case RTSP_LOWER_TRANSPORT_UDP:
1686 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1687 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1688 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1689 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1690 break;
1691 }
321259c1
MS
1692 if (len == AVERROR(EAGAIN) && first_queue_st &&
1693 rt->transport == RTSP_TRANSPORT_RTP) {
1694 rtsp_st = first_queue_st;
bfc6db44 1695 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1696 goto end;
1697 }
0e59034e
RB
1698 if (len < 0)
1699 return len;
1700 if (len == 0)
1701 return AVERROR_EOF;
c8965800 1702 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1703 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1704 } else {
bfc6db44 1705 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1706 if (ret < 0) {
1707 /* Either bad packet, or a RTCP packet. Check if the
1708 * first_rtcp_ntp_time field was initialized. */
1709 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1710 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1711 /* first_rtcp_ntp_time has been initialized for this stream,
1712 * copy the same value to all other uninitialized streams,
1713 * in order to map their timestamp origin to the same ntp time
1714 * as this one. */
1715 int i;
3a1cdcc7
MS
1716 AVStream *st = NULL;
1717 if (rtsp_st->stream_index >= 0)
1718 st = s->streams[rtsp_st->stream_index];
2cab6b48 1719 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1720 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1721 AVStream *st2 = NULL;
1722 if (rt->rtsp_streams[i]->stream_index >= 0)
1723 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1724 if (rtpctx2 && st && st2 &&
1725 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1726 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1727 rtpctx2->rtcp_ts_offset = av_rescale_q(
1728 rtpctx->rtcp_ts_offset, st->time_base,
1729 st2->time_base);
1730 }
2cab6b48
MS
1731 }
1732 }
b20359f5
JA
1733 if (ret == -RTCP_BYE) {
1734 rt->nb_byes++;
1735
1736 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1737 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1738
1739 if (rt->nb_byes == rt->nb_rtsp_streams)
1740 return AVERROR_EOF;
1741 }
2cab6b48
MS
1742 }
1743 }
321259c1 1744end:
0e59034e
RB
1745 if (ret < 0)
1746 goto redo;
c8965800 1747 if (ret == 1)
0e59034e
RB
1748 /* more packets may follow, so we save the RTP context */
1749 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1750
1751 return ret;
1752}
44b70ce5 1753#endif /* CONFIG_RTPDEC */
0e59034e 1754
44b70ce5 1755#if CONFIG_SDP_DEMUXER
cb1fdc61 1756static int sdp_probe(AVProbeData *p1)
93ced3e8 1757{
0e1ceacd 1758 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1759
3fbd12d1 1760 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1761 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1762 if (p + sizeof("c=IN IP") - 1 < p_end &&
1763 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1764 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1765
c8965800 1766 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1767 if (++p >= p_end)
cb1fdc61 1768 break;
cb1fdc61
FB
1769 if (*p == '\r')
1770 p++;
1771 }
93ced3e8
FB
1772 return 0;
1773}
1774
c8965800 1775static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1776{
8b1ab7bf 1777 RTSPState *rt = s->priv_data;
93ced3e8
FB
1778 RTSPStream *rtsp_st;
1779 int size, i, err;
1780 char *content;
1781 char url[1024];
1782
57b5555c
MS
1783 if (!ff_network_init())
1784 return AVERROR(EIO);
1785
93ced3e8
FB
1786 /* read the whole sdp file */
1787 /* XXX: better loading */
1788 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1789 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1790 if (size <= 0) {
1791 av_free(content);
1792 return AVERROR_INVALIDDATA;
1793 }
1794 content[size] ='\0';
1795
f81c7ac7 1796 err = ff_sdp_parse(s, content);
93ced3e8 1797 av_free(content);
f81c7ac7 1798 if (err) goto fail;
93ced3e8
FB
1799
1800 /* open each RTP stream */
c8965800 1801 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1802 char namebuf[50];
8b1ab7bf 1803 rtsp_st = rt->rtsp_streams[i];
115329f1 1804
3fbd12d1
MS
1805 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1806 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1807 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1808 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1809 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1810 rtsp_st->sdp_ttl);
59d96941 1811 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE) < 0) {
93ced3e8
FB
1812 err = AVERROR_INVALIDDATA;
1813 goto fail;
1814 }
ee0cb67f 1815 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1816 goto fail;
93ced3e8
FB
1817 }
1818 return 0;
c8965800 1819fail:
3307e6ea 1820 ff_rtsp_close_streams(s);
57b5555c 1821 ff_network_close();
93ced3e8
FB
1822 return err;
1823}
1824
93ced3e8
FB
1825static int sdp_read_close(AVFormatContext *s)
1826{
3307e6ea 1827 ff_rtsp_close_streams(s);
57b5555c 1828 ff_network_close();
93ced3e8
FB
1829 return 0;
1830}
1831
c6610a21 1832AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1833 .name = "sdp",
1834 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1835 .priv_data_size = sizeof(RTSPState),
1836 .read_probe = sdp_probe,
1837 .read_header = sdp_read_header,
1838 .read_packet = ff_rtsp_fetch_packet,
1839 .read_close = sdp_read_close,
93ced3e8 1840};
44b70ce5 1841#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1842
44b70ce5 1843#if CONFIG_RTP_DEMUXER
44594cc7
MS
1844static int rtp_probe(AVProbeData *p)
1845{
1846 if (av_strstart(p->filename, "rtp:", NULL))
1847 return AVPROBE_SCORE_MAX;
1848 return 0;
1849}
1850
1851static int rtp_read_header(AVFormatContext *s,
1852 AVFormatParameters *ap)
1853{
1854 uint8_t recvbuf[1500];
1855 char host[500], sdp[500];
1856 int ret, port;
1857 URLContext* in = NULL;
1858 int payload_type;
1859 AVCodecContext codec;
1860 struct sockaddr_storage addr;
ae628ec1 1861 AVIOContext pb;
44594cc7
MS
1862 socklen_t addrlen = sizeof(addr);
1863
1864 if (!ff_network_init())
1865 return AVERROR(EIO);
1866
59d96941 1867 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ);
44594cc7
MS
1868 if (ret)
1869 goto fail;
1870
1871 while (1) {
bc371aca 1872 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
1873 if (ret == AVERROR(EAGAIN))
1874 continue;
1875 if (ret < 0)
1876 goto fail;
1877 if (ret < 12) {
1878 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1879 continue;
1880 }
1881
1882 if ((recvbuf[0] & 0xc0) != 0x80) {
1883 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1884 "received\n");
1885 continue;
1886 }
1887
1888 payload_type = recvbuf[1] & 0x7f;
1889 break;
1890 }
1869ea03 1891 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 1892 ffurl_close(in);
44594cc7
MS
1893 in = NULL;
1894
1895 memset(&codec, 0, sizeof(codec));
1896 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1897 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1898 "without an SDP file describing it\n",
1899 payload_type);
1900 goto fail;
1901 }
1902 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1903 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1904 "properly you need an SDP file "
1905 "describing it\n");
1906 }
1907
1908 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1909 NULL, 0, s->filename);
1910
1911 snprintf(sdp, sizeof(sdp),
1912 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1913 addr.ss_family == AF_INET ? 4 : 6, host,
1914 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1915 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1916 port, payload_type);
1917 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1918
e731b8d8 1919 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
1920 s->pb = &pb;
1921
1922 /* sdp_read_header initializes this again */
1923 ff_network_close();
1924
1925 ret = sdp_read_header(s, ap);
1926 s->pb = NULL;
1927 return ret;
1928
1929fail:
1930 if (in)
e52a9145 1931 ffurl_close(in);
44594cc7
MS
1932 ff_network_close();
1933 return ret;
1934}
1935
c6610a21 1936AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
1937 .name = "rtp",
1938 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
1939 .priv_data_size = sizeof(RTSPState),
1940 .read_probe = rtp_probe,
1941 .read_header = rtp_read_header,
1942 .read_packet = ff_rtsp_fetch_packet,
1943 .read_close = sdp_read_close,
44594cc7
MS
1944 .flags = AVFMT_NOFILE,
1945};
44b70ce5 1946#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1947