rtsp: Factorize code for initializing the rtp payload handler
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg 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 *
b78e7197 12 * FFmpeg 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
b78e7197 18 * License along with FFmpeg; 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"
f5d33f52 25#include "libavutil/random_seed.h"
1617ad97
FB
26#include "avformat.h"
27
db0ed93e 28#include <sys/time.h>
b250f9c6 29#if HAVE_SYS_SELECT_H
933bd8e2 30#include <sys/select.h>
6ad1c9c9 31#endif
ea452b54 32#include <strings.h>
e4a9e3cc 33#include "internal.h"
42572ef5 34#include "network.h"
cbfa66d0 35#include "os_support.h"
f5d33f52 36#include "http.h"
c971ff19 37#include "rtsp.h"
1617ad97 38
302879cb 39#include "rtpdec.h"
e9dea59f 40#include "rdt.h"
965a3ddb 41#include "rtpdec_formats.h"
a493f80a 42#include "rtpenc_chain.h"
4934884a 43
1617ad97 44//#define DEBUG
b6892136 45//#define DEBUG_RTP_TCP
1617ad97 46
c2bfd816 47/* Timeout values for socket select, in ms,
9cba6f5f
SG
48 * and read_packet(), in seconds */
49#define SELECT_TIMEOUT_MS 100
50#define READ_PACKET_TIMEOUT_S 10
51#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / SELECT_TIMEOUT_MS
91af5601 52#define SDP_MAX_SIZE 16384
96a7c975 53#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
9cba6f5f 54
1ef36a70
RB
55static void get_word_until_chars(char *buf, int buf_size,
56 const char *sep, const char **pp)
1617ad97
FB
57{
58 const char *p;
59 char *q;
60
61 p = *pp;
30619e6e 62 p += strspn(p, SPACE_CHARS);
1617ad97
FB
63 q = buf;
64 while (!strchr(sep, *p) && *p != '\0') {
65 if ((q - buf) < buf_size - 1)
66 *q++ = *p;
67 p++;
68 }
69 if (buf_size > 0)
70 *q = '\0';
71 *pp = p;
72}
73
1ef36a70
RB
74static void get_word_sep(char *buf, int buf_size, const char *sep,
75 const char **pp)
1617ad97 76{
1ef36a70
RB
77 if (**pp == '/') (*pp)++;
78 get_word_until_chars(buf, buf_size, sep, pp);
79}
1617ad97 80
1ef36a70
RB
81static void get_word(char *buf, int buf_size, const char **pp)
82{
83 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
84}
85
8bf0f969
MS
86/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
87 * and end time.
88 * Used for seeking in the rtp stream.
89 */
90static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
91{
92 char buf[256];
93
94 p += strspn(p, SPACE_CHARS);
95 if (!av_stristart(p, "npt=", &p))
96 return;
97
98 *start = AV_NOPTS_VALUE;
99 *end = AV_NOPTS_VALUE;
100
101 get_word_sep(buf, sizeof(buf), "-", &p);
102 *start = parse_date(buf, 1);
103 if (*p == '-') {
104 p++;
105 get_word_sep(buf, sizeof(buf), "-", &p);
106 *end = parse_date(buf, 1);
107 }
108// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
109// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
110}
111
112static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
113{
114 struct addrinfo hints, *ai = NULL;
115 memset(&hints, 0, sizeof(hints));
116 hints.ai_flags = AI_NUMERICHOST;
117 if (getaddrinfo(buf, NULL, &hints, &ai))
118 return -1;
119 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
120 freeaddrinfo(ai);
121 return 0;
122}
123
44b70ce5 124#if CONFIG_RTPDEC
003eb642
MS
125static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
126 RTSPStream *rtsp_st, AVCodecContext *codec)
127{
128 if (!handler)
129 return;
130 codec->codec_id = handler->codec_id;
131 rtsp_st->dynamic_handler = handler;
132 if (handler->open)
133 rtsp_st->dynamic_protocol_context = handler->open();
134}
135
c8965800 136/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3
RB
137static int sdp_parse_rtpmap(AVFormatContext *s,
138 AVCodecContext *codec, RTSPStream *rtsp_st,
c8965800 139 int payload_type, const char *p)
93ced3e8
FB
140{
141 char buf[256];
d1ccf0e0
RD
142 int i;
143 AVCodec *c;
7b49ce2e 144 const char *c_name;
93ced3e8 145
d1ccf0e0 146 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
147 * see if we can handle this kind of payload.
148 * The space should normally not be there but some Real streams or
149 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
150 * have a trailing space. */
151 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 152 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
153 RTPDynamicProtocolHandler *handler =
154 ff_rtp_handler_find_by_name(buf, codec->codec_type);
155 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
156 /* If no dynamic handler was found, check with the list of standard
157 * allocated types, if such a stream for some reason happens to
158 * use a private payload type. This isn't handled in rtpdec.c, since
159 * the format name from the rtpmap line never is passed into rtpdec. */
160 if (!rtsp_st->dynamic_handler)
161 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 162 } else {
c8965800
RB
163 /* We are in a standard case
164 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 165 /* search into AVRtpPayloadTypes[] */
7ed19d7f 166 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
167 }
168
169 c = avcodec_find_decoder(codec->codec_id);
170 if (c && c->name)
7b49ce2e 171 c_name = c->name;
d1ccf0e0 172 else
170870b7 173 c_name = "(null)";
d1ccf0e0 174
7515ed0c
RB
175 get_word_sep(buf, sizeof(buf), "/", &p);
176 i = atoi(buf);
177 switch (codec->codec_type) {
72415b2a 178 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
179 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
180 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
181 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
182 if (i > 0) {
183 codec->sample_rate = i;
184 get_word_sep(buf, sizeof(buf), "/", &p);
185 i = atoi(buf);
186 if (i > 0)
187 codec->channels = i;
188 // TODO: there is a bug here; if it is a mono stream, and
189 // less than 22000Hz, faad upconverts to stereo and twice
190 // the frequency. No problem, but the sample rate is being
191 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 192 }
7515ed0c
RB
193 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
194 codec->sample_rate);
195 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
196 codec->channels);
197 break;
72415b2a 198 case AVMEDIA_TYPE_VIDEO:
7515ed0c
RB
199 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
200 break;
201 default:
202 break;
203 }
204 return 0;
93ced3e8
FB
205}
206
c2bfd816 207/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
208 * is broken out as a function because it is used in rtp_h264.c, which is
209 * forthcoming. */
3307e6ea 210int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 211 char *value, int value_size)
d0deedcb 212{
30619e6e 213 *p += strspn(*p, SPACE_CHARS);
c8965800 214 if (**p) {
d0deedcb
RM
215 get_word_sep(attr, attr_size, "=", p);
216 if (**p == '=')
217 (*p)++;
218 get_word_sep(value, value_size, ";", p);
219 if (**p == ';')
220 (*p)++;
221 return 1;
222 }
223 return 0;
224}
225
93ced3e8
FB
226typedef struct SDPParseState {
227 /* SDP only */
3fbd12d1 228 struct sockaddr_storage default_ip;
c8965800
RB
229 int default_ttl;
230 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
231} SDPParseState;
232
233static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
234 int letter, const char *buf)
235{
8b1ab7bf 236 RTSPState *rt = s->priv_data;
1617ad97
FB
237 char buf1[64], st_type[64];
238 const char *p;
72415b2a 239 enum AVMediaType codec_type;
fb65d2ca 240 int payload_type, i;
1617ad97
FB
241 AVStream *st;
242 RTSPStream *rtsp_st;
3fbd12d1 243 struct sockaddr_storage sdp_ip;
93ced3e8
FB
244 int ttl;
245
67c9cd69 246 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
247
248 p = buf;
cb760a47
RB
249 if (s1->skip_media && letter != 'm')
250 return;
c8965800 251 switch (letter) {
93ced3e8
FB
252 case 'c':
253 get_word(buf1, sizeof(buf1), &p);
254 if (strcmp(buf1, "IN") != 0)
255 return;
256 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 257 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
258 return;
259 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 260 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
261 return;
262 ttl = 16;
263 if (*p == '/') {
264 p++;
265 get_word_sep(buf1, sizeof(buf1), "/", &p);
266 ttl = atoi(buf1);
267 }
268 if (s->nb_streams == 0) {
269 s1->default_ip = sdp_ip;
270 s1->default_ttl = ttl;
271 } else {
272 st = s->streams[s->nb_streams - 1];
273 rtsp_st = st->priv_data;
274 rtsp_st->sdp_ip = sdp_ip;
275 rtsp_st->sdp_ttl = ttl;
276 }
277 break;
1617ad97 278 case 's':
2ef6c124 279 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
280 break;
281 case 'i':
282 if (s->nb_streams == 0) {
2ef6c124 283 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
284 break;
285 }
286 break;
287 case 'm':
288 /* new stream */
cb760a47 289 s1->skip_media = 0;
1617ad97
FB
290 get_word(st_type, sizeof(st_type), &p);
291 if (!strcmp(st_type, "audio")) {
72415b2a 292 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 293 } else if (!strcmp(st_type, "video")) {
72415b2a 294 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 295 } else if (!strcmp(st_type, "application")) {
72415b2a 296 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 297 } else {
cb760a47 298 s1->skip_media = 1;
1617ad97
FB
299 return;
300 }
1617ad97
FB
301 rtsp_st = av_mallocz(sizeof(RTSPStream));
302 if (!rtsp_st)
303 return;
8b1ab7bf
FB
304 rtsp_st->stream_index = -1;
305 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
306
307 rtsp_st->sdp_ip = s1->default_ip;
308 rtsp_st->sdp_ttl = s1->default_ttl;
309
93ced3e8
FB
310 get_word(buf1, sizeof(buf1), &p); /* port */
311 rtsp_st->sdp_port = atoi(buf1);
312
313 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 314
93ced3e8
FB
315 /* XXX: handle list of formats */
316 get_word(buf1, sizeof(buf1), &p); /* format list */
317 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 318
7ed19d7f 319 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
320 /* no corresponding stream */
321 } else {
322 st = av_new_stream(s, 0);
323 if (!st)
324 return;
325 st->priv_data = rtsp_st;
326 rtsp_st->stream_index = st->index;
01f4895c 327 st->codec->codec_type = codec_type;
d1ccf0e0 328 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 329 /* if standard payload type, we can find the codec right now */
bf6d9818 330 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
331 }
332 }
1617ad97 333 /* put a default control url */
00eb13e0 334 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 335 sizeof(rtsp_st->control_url));
1617ad97
FB
336 break;
337 case 'a':
00eb13e0
AS
338 if (av_strstart(p, "control:", &p)) {
339 if (s->nb_streams == 0) {
340 if (!strncmp(p, "rtsp://", 7))
341 av_strlcpy(rt->control_uri, p,
342 sizeof(rt->control_uri));
343 } else {
0b6a7ff4
MS
344 char proto[32];
345 /* get the control url */
346 st = s->streams[s->nb_streams - 1];
347 rtsp_st = st->priv_data;
115329f1 348
0b6a7ff4
MS
349 /* XXX: may need to add full url resolution */
350 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
351 NULL, NULL, 0, p);
352 if (proto[0] == '\0') {
353 /* relative control URL */
354 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
355 av_strlcat(rtsp_st->control_url, "/",
356 sizeof(rtsp_st->control_url));
357 av_strlcat(rtsp_st->control_url, p,
358 sizeof(rtsp_st->control_url));
359 } else
360 av_strlcpy(rtsp_st->control_url, p,
361 sizeof(rtsp_st->control_url));
00eb13e0 362 }
83d14c85 363 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 364 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 365 get_word(buf1, sizeof(buf1), &p);
93ced3e8 366 payload_type = atoi(buf1);
83d14c85 367 st = s->streams[s->nb_streams - 1];
ff16f551 368 rtsp_st = st->priv_data;
8f3c87f3 369 sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p);
7fc8ac7f
JA
370 } else if (av_strstart(p, "fmtp:", &p) ||
371 av_strstart(p, "framesize:", &p)) {
93ced3e8 372 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
373 // let dynamic protocol handlers have a stab at the line.
374 get_word(buf1, sizeof(buf1), &p);
375 payload_type = atoi(buf1);
c8965800
RB
376 for (i = 0; i < s->nb_streams; i++) {
377 st = s->streams[i];
d0deedcb 378 rtsp_st = st->priv_data;
c8965800
RB
379 if (rtsp_st->sdp_payload_type == payload_type &&
380 rtsp_st->dynamic_handler &&
381 rtsp_st->dynamic_handler->parse_sdp_a_line)
382 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
383 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 384 }
c8965800 385 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
386 int64_t start, end;
387
388 // this is so that seeking on a streamed file can work.
389 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
390 s->start_time = start;
391 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
392 s->duration = (end == AV_NOPTS_VALUE) ?
393 AV_NOPTS_VALUE : end - start;
119b4668
RB
394 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
395 if (atoi(p) == 1)
396 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
397 } else {
398 if (rt->server_type == RTSP_SERVER_WMS)
399 ff_wms_parse_sdp_a_line(s, p);
400 if (s->nb_streams > 0) {
c4a3d032
RB
401 if (rt->server_type == RTSP_SERVER_REAL)
402 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
403
404 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
405 if (rtsp_st->dynamic_handler &&
406 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
407 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
408 s->nb_streams - 1,
c4a3d032 409 rtsp_st->dynamic_protocol_context, buf);
1a30d541 410 }
1617ad97
FB
411 }
412 break;
413 }
414}
415
0526c6f7 416int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
417{
418 const char *p;
419 int letter;
9211bcdd
RB
420 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
421 * contain long SDP lines containing complete ASF Headers (several
422 * kB) or arrays of MDPR (RM stream descriptor) headers plus
423 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
424 * buffer is large.
425 *
afcea58c
JA
426 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
427 * in rtpdec_xiph.c. */
373afbaf 428 char buf[16384], *q;
93ced3e8 429 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 430
93ced3e8 431 memset(s1, 0, sizeof(SDPParseState));
1617ad97 432 p = content;
c8965800 433 for (;;) {
30619e6e 434 p += strspn(p, SPACE_CHARS);
1617ad97
FB
435 letter = *p;
436 if (letter == '\0')
437 break;
438 p++;
439 if (*p != '=')
440 goto next_line;
441 p++;
442 /* get the content */
443 q = buf;
b6892136 444 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
445 if ((q - buf) < sizeof(buf) - 1)
446 *q++ = *p;
447 p++;
448 }
449 *q = '\0';
93ced3e8 450 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
451 next_line:
452 while (*p != '\n' && *p != '\0')
453 p++;
454 if (*p == '\n')
455 p++;
456 }
457 return 0;
458}
44b70ce5 459#endif /* CONFIG_RTPDEC */
1617ad97 460
1ced9da3 461/* close and free RTSP streams */
3307e6ea 462void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 463{
52aa4338 464 RTSPState *rt = s->priv_data;
1ced9da3
LA
465 int i;
466 RTSPStream *rtsp_st;
467
c8965800 468 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
469 rtsp_st = rt->rtsp_streams[i];
470 if (rtsp_st) {
471 if (rtsp_st->transport_priv) {
fd450a51
MS
472 if (s->oformat) {
473 AVFormatContext *rtpctx = rtsp_st->transport_priv;
474 av_write_trailer(rtpctx);
b7dc88fc
MS
475 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
476 uint8_t *ptr;
477 url_close_dyn_buf(rtpctx->pb, &ptr);
478 av_free(ptr);
479 } else {
685e76b5 480 url_fclose(rtpctx->pb);
b7dc88fc 481 }
f86f6656
MS
482 av_metadata_free(&rtpctx->streams[0]->metadata);
483 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
484 av_free(rtpctx->streams[0]);
485 av_free(rtpctx);
44b70ce5 486 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3 487 ff_rdt_parse_close(rtsp_st->transport_priv);
44b70ce5 488 else if (CONFIG_RTPDEC)
1ced9da3
LA
489 rtp_parse_close(rtsp_st->transport_priv);
490 }
491 if (rtsp_st->rtp_handle)
492 url_close(rtsp_st->rtp_handle);
493 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
494 rtsp_st->dynamic_handler->close(
495 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
496 }
497 }
498 av_free(rt->rtsp_streams);
499 if (rt->asf_ctx) {
500 av_close_input_stream (rt->asf_ctx);
501 rt->asf_ctx = NULL;
502 }
96a7c975 503 av_free(rt->recvbuf);
1ced9da3
LA
504}
505
c8965800 506static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
507{
508 RTSPState *rt = s->priv_data;
509 AVStream *st = NULL;
510
511 /* open the RTP context */
512 if (rtsp_st->stream_index >= 0)
513 st = s->streams[rtsp_st->stream_index];
514 if (!st)
515 s->ctx_flags |= AVFMTCTX_NOHEADER;
516
44b70ce5 517 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
518 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
519 rtsp_st->rtp_handle,
520 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 521 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 522 rtsp_st->rtp_handle = NULL;
44b70ce5 523 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
524 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
525 rtsp_st->dynamic_protocol_context,
526 rtsp_st->dynamic_handler);
44b70ce5 527 else if (CONFIG_RTPDEC)
1ced9da3 528 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
529 rtsp_st->sdp_payload_type,
530 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
531 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
532
533 if (!rtsp_st->transport_priv) {
534 return AVERROR(ENOMEM);
44b70ce5 535 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 536 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
537 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
538 rtsp_st->dynamic_protocol_context,
539 rtsp_st->dynamic_handler);
540 }
541 }
542
543 return 0;
544}
545
6f5a3d0a 546#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
547static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
548{
549 const char *p;
550 int v;
551
552 p = *pp;
30619e6e 553 p += strspn(p, SPACE_CHARS);
1617ad97
FB
554 v = strtol(p, (char **)&p, 10);
555 if (*p == '-') {
556 p++;
557 *min_ptr = v;
558 v = strtol(p, (char **)&p, 10);
559 *max_ptr = v;
560 } else {
561 *min_ptr = v;
562 *max_ptr = v;
563 }
564 *pp = p;
565}
566
567/* XXX: only one transport specification is parsed */
a9e534d5 568static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
569{
570 char transport_protocol[16];
571 char profile[16];
572 char lower_transport[16];
573 char parameter[16];
574 RTSPTransportField *th;
575 char buf[256];
115329f1 576
1617ad97 577 reply->nb_transports = 0;
115329f1 578
c8965800 579 for (;;) {
30619e6e 580 p += strspn(p, SPACE_CHARS);
1617ad97
FB
581 if (*p == '\0')
582 break;
583
584 th = &reply->transports[reply->nb_transports];
585
115329f1 586 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 587 "/", &p);
e1502118 588 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
589 get_word_sep(profile, sizeof(profile), "/;,", &p);
590 lower_transport[0] = '\0';
591 /* rtp/avp/<protocol> */
592 if (*p == '/') {
7ecc634e
LB
593 get_word_sep(lower_transport, sizeof(lower_transport),
594 ";,", &p);
119b4668
RB
595 }
596 th->transport = RTSP_TRANSPORT_RTP;
597 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
598 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 599 /* x-pn-tng/<protocol> */
e1502118
LB
600 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
601 profile[0] = '\0';
119b4668 602 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 603 }
b6892136 604 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 605 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 606 else
90abbdba 607 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 608
1617ad97
FB
609 if (*p == ';')
610 p++;
611 /* get each parameter */
612 while (*p != '\0' && *p != ',') {
613 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
614 if (!strcmp(parameter, "port")) {
615 if (*p == '=') {
616 p++;
617 rtsp_parse_range(&th->port_min, &th->port_max, &p);
618 }
619 } else if (!strcmp(parameter, "client_port")) {
620 if (*p == '=') {
621 p++;
115329f1 622 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
623 &th->client_port_max, &p);
624 }
625 } else if (!strcmp(parameter, "server_port")) {
626 if (*p == '=') {
627 p++;
115329f1 628 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
629 &th->server_port_max, &p);
630 }
631 } else if (!strcmp(parameter, "interleaved")) {
632 if (*p == '=') {
633 p++;
115329f1 634 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
635 &th->interleaved_max, &p);
636 }
637 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
638 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
639 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
640 } else if (!strcmp(parameter, "ttl")) {
641 if (*p == '=') {
642 p++;
643 th->ttl = strtol(p, (char **)&p, 10);
644 }
645 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
646 if (*p == '=') {
647 p++;
648 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 649 get_sockaddr(buf, &th->destination);
1617ad97 650 }
619298a8
JW
651 } else if (!strcmp(parameter, "source")) {
652 if (*p == '=') {
653 p++;
654 get_word_sep(buf, sizeof(buf), ";,", &p);
655 av_strlcpy(th->source, buf, sizeof(th->source));
656 }
1617ad97 657 }
619298a8 658
1617ad97
FB
659 while (*p != ';' && *p != '\0' && *p != ',')
660 p++;
661 if (*p == ';')
662 p++;
663 }
664 if (*p == ',')
665 p++;
666
667 reply->nb_transports++;
668 }
669}
670
2626308a
MS
671void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
672 HTTPAuthState *auth_state)
1617ad97
FB
673{
674 const char *p;
675
676 /* NOTE: we do case independent match for broken servers */
677 p = buf;
f7d78f36 678 if (av_stristart(p, "Session:", &p)) {
30e79845 679 int t;
1617ad97 680 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
681 if (av_stristart(p, ";timeout=", &p) &&
682 (t = strtol(p, NULL, 10)) > 0) {
683 reply->timeout = t;
684 }
f7d78f36 685 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 686 reply->content_length = strtol(p, NULL, 10);
f7d78f36 687 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 688 rtsp_parse_transport(reply, p);
f7d78f36 689 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 690 reply->seq = strtol(p, NULL, 10);
f7d78f36 691 } else if (av_stristart(p, "Range:", &p)) {
31693e00 692 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 693 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 694 p += strspn(p, SPACE_CHARS);
30aa6aed 695 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 696 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 697 p += strspn(p, SPACE_CHARS);
7a86bafa 698 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
699 } else if (av_stristart(p, "Notice:", &p) ||
700 av_stristart(p, "X-Notice:", &p)) {
701 reply->notice = strtol(p, NULL, 10);
d243ba30 702 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 703 p += strspn(p, SPACE_CHARS);
d243ba30 704 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a 705 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
30619e6e 706 p += strspn(p, SPACE_CHARS);
2626308a
MS
707 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
708 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
30619e6e 709 p += strspn(p, SPACE_CHARS);
2626308a 710 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
dd22cfb1
MS
711 } else if (av_stristart(p, "Content-Base:", &p)) {
712 p += strspn(p, SPACE_CHARS);
713 av_strlcpy(reply->content_base, p , sizeof(reply->content_base));
1617ad97
FB
714 }
715}
716
b7b8fc34 717/* skip a RTP/TCP interleaved packet */
ec55edba 718void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
719{
720 RTSPState *rt = s->priv_data;
721 int ret, len, len1;
722 uint8_t buf[1024];
723
0e848977 724 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
725 if (ret != 3)
726 return;
80fb8234 727 len = AV_RB16(buf + 1);
67c9cd69
BC
728
729 dprintf(s, "skipping RTP packet len=%d\n", len);
730
b7b8fc34
FB
731 /* skip payload */
732 while (len > 0) {
733 len1 = len;
734 if (len1 > sizeof(buf))
735 len1 = sizeof(buf);
0e848977 736 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
737 if (ret != len1)
738 return;
739 len -= len1;
740 }
741}
1617ad97 742
3307e6ea 743int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
744 unsigned char **content_ptr,
745 int return_on_interleaved_data)
1617ad97
FB
746{
747 RTSPState *rt = s->priv_data;
748 char buf[4096], buf1[1024], *q;
749 unsigned char ch;
750 const char *p;
7e726132 751 int ret, content_length, line_count = 0;
1617ad97
FB
752 unsigned char *content = NULL;
753
d541a7d2 754 memset(reply, 0, sizeof(*reply));
1617ad97 755
1617ad97 756 /* parse reply (XXX: use buffers) */
1617ad97 757 rt->last_reply[0] = '\0';
c8965800 758 for (;;) {
1617ad97 759 q = buf;
c8965800 760 for (;;) {
0e848977 761 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 762#ifdef DEBUG_RTP_TCP
67c9cd69 763 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
764#endif
765 if (ret != 1)
2401660d 766 return AVERROR_EOF;
1617ad97
FB
767 if (ch == '\n')
768 break;
b7b8fc34
FB
769 if (ch == '$') {
770 /* XXX: only parse it if first char on line ? */
7e726132
RB
771 if (return_on_interleaved_data) {
772 return 1;
773 } else
ec55edba 774 ff_rtsp_skip_packet(s);
b7b8fc34 775 } else if (ch != '\r') {
1617ad97
FB
776 if ((q - buf) < sizeof(buf) - 1)
777 *q++ = ch;
778 }
779 }
780 *q = '\0';
67c9cd69
BC
781
782 dprintf(s, "line='%s'\n", buf);
783
1617ad97
FB
784 /* test if last line */
785 if (buf[0] == '\0')
786 break;
787 p = buf;
788 if (line_count == 0) {
789 /* get reply code */
790 get_word(buf1, sizeof(buf1), &p);
791 get_word(buf1, sizeof(buf1), &p);
792 reply->status_code = atoi(buf1);
d93fdcbf 793 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 794 } else {
2626308a 795 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
796 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
797 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
798 }
799 line_count++;
800 }
115329f1 801
1617ad97 802 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 803 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 804
1617ad97
FB
805 content_length = reply->content_length;
806 if (content_length > 0) {
807 /* leave some room for a trailing '\0' (useful for simple parsing) */
808 content = av_malloc(content_length + 1);
0e848977 809 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
810 content[content_length] = '\0';
811 }
812 if (content_ptr)
813 *content_ptr = content;
e2e2e7dd
AB
814 else
815 av_free(content);
7e726132 816
7ed8211b
LB
817 if (rt->seq != reply->seq) {
818 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
819 rt->seq, reply->seq);
820 }
821
fccb1770
RB
822 /* EOS */
823 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
824 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 825 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 826 rt->state = RTSP_STATE_IDLE;
c8965800 827 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 828 return AVERROR(EIO); /* data or server error */
c8965800 829 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
830 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
831 return AVERROR(EPERM);
832
7e726132 833 return 0;
1617ad97
FB
834}
835
d0382374 836int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
837 const char *method, const char *url,
838 const char *headers,
839 const unsigned char *send_content,
840 int send_content_length)
29b9f58b
RB
841{
842 RTSPState *rt = s->priv_data;
f5d33f52
JA
843 char buf[4096], *out_buf;
844 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 845
f5d33f52
JA
846 /* Add in RTSP headers */
847 out_buf = buf;
29b9f58b 848 rt->seq++;
b17d11c6
MS
849 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
850 if (headers)
851 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 852 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
853 if (rt->session_id[0] != '\0' && (!headers ||
854 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 855 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 856 }
aa8bf2fb
MS
857 if (rt->auth[0]) {
858 char *str = ff_http_auth_create_response(&rt->auth_state,
859 rt->auth, url, method);
860 if (str)
861 av_strlcat(buf, str, sizeof(buf));
862 av_free(str);
863 }
dfd017bf
MS
864 if (send_content_length > 0 && send_content)
865 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 866 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 867
f5d33f52
JA
868 /* base64 encode rtsp if tunneling */
869 if (rt->control_transport == RTSP_MODE_TUNNEL) {
870 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
871 out_buf = base64buf;
872 }
873
67c9cd69
BC
874 dprintf(s, "Sending:\n%s--\n", buf);
875
f5d33f52
JA
876 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
877 if (send_content_length > 0 && send_content) {
878 if (rt->control_transport == RTSP_MODE_TUNNEL) {
879 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
880 "with content data not supported\n");
881 return AVERROR_PATCHWELCOME;
882 }
b8c2c41d 883 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 884 }
30e79845 885 rt->last_cmd_time = av_gettime();
d0382374
JA
886
887 return 0;
30e79845
RB
888}
889
d0382374 890int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 891 const char *url, const char *headers)
dfd017bf 892{
d0382374 893 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
894}
895
d0382374 896int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
897 const char *headers, RTSPMessageHeader *reply,
898 unsigned char **content_ptr)
30e79845 899{
d0382374 900 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 901 content_ptr, NULL, 0);
29b9f58b
RB
902}
903
d0382374 904int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
905 const char *method, const char *url,
906 const char *header,
907 RTSPMessageHeader *reply,
908 unsigned char **content_ptr,
909 const unsigned char *send_content,
910 int send_content_length)
dfd017bf 911{
30af0779
MS
912 RTSPState *rt = s->priv_data;
913 HTTPAuthType cur_auth_type;
d0382374 914 int ret;
30af0779
MS
915
916retry:
917 cur_auth_type = rt->auth_state.auth_type;
d0382374 918 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
919 send_content,
920 send_content_length)))
d0382374 921 return ret;
dfd017bf 922
d0382374
JA
923 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
924 return ret;
30af0779
MS
925
926 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
927 rt->auth_state.auth_type != HTTP_AUTH_NONE)
928 goto retry;
d0382374 929
bf55cf19 930 if (reply->status_code > 400){
d93fdcbf 931 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 932 method,
d93fdcbf
LB
933 reply->status_code,
934 reply->reason);
bf55cf19
LB
935 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
936 }
937
d0382374 938 return 0;
dfd017bf
MS
939}
940
53620bba 941/**
32e543f8 942 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 943 */
c8965800
RB
944static int make_setup_request(AVFormatContext *s, const char *host, int port,
945 int lower_transport, const char *real_challenge)
1617ad97
FB
946{
947 RTSPState *rt = s->priv_data;
f830c9a4 948 int rtx, j, i, err, interleave = 0;
1617ad97 949 RTSPStream *rtsp_st;
a9e534d5 950 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 951 char cmd[2048];
e9dea59f
RB
952 const char *trans_pref;
953
119b4668 954 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
955 trans_pref = "x-pn-tng";
956 else
957 trans_pref = "RTP/AVP";
115329f1 958
30e79845
RB
959 /* default timeout: 1 minute */
960 rt->timeout = 60;
961
1617ad97
FB
962 /* for each stream, make the setup request */
963 /* XXX: we assume the same server is used for the control of each
c8965800 964 * RTSP stream */
d1ccf0e0 965
c8965800 966 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
967 char transport[2048];
968
f830c9a4
RB
969 /**
970 * WMS serves all UDP data over a single connection, the RTX, which
971 * isn't necessarily the first in the SDP but has to be the first
972 * to be set up, else the second/third SETUP will fail with a 461.
973 */
974 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
975 rt->server_type == RTSP_SERVER_WMS) {
976 if (i == 0) {
977 /* rtx first */
978 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
979 int len = strlen(rt->rtsp_streams[rtx]->control_url);
980 if (len >= 4 &&
c8965800
RB
981 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
982 "/rtx"))
f830c9a4
RB
983 break;
984 }
985 if (rtx == rt->nb_rtsp_streams)
986 return -1; /* no RTX found */
987 rtsp_st = rt->rtsp_streams[rtx];
988 } else
989 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
990 } else
2fea9650 991 rtsp_st = rt->rtsp_streams[i];
1617ad97 992
1617ad97 993 /* RTP/UDP */
90abbdba 994 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 995 char buf[256];
85fb7b34 996
f830c9a4
RB
997 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
998 port = reply->transports[0].client_port_min;
999 goto have_port;
1000 }
1001
85fb7b34 1002 /* first try in specified port range */
d1ccf0e0 1003 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1004 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1005 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1006 "?localport=%d", j);
c8965800
RB
1007 /* we will use two ports per rtp stream (rtp and rtcp) */
1008 j += 2;
1009 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1010 goto rtp_opened;
1011 }
1617ad97 1012 }
85fb7b34 1013
c8965800
RB
1014#if 0
1015 /* then try on any port */
1016 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1017 err = AVERROR_INVALIDDATA;
1018 goto fail;
1019 }
1020#endif
85fb7b34
FB
1021
1022 rtp_opened:
67f34aaa 1023 port = rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1024 have_port:
0ad306bc 1025 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1026 "%s/UDP;", trans_pref);
1027 if (rt->server_type != RTSP_SERVER_REAL)
1028 av_strlcat(transport, "unicast;", sizeof(transport));
1029 av_strlcatf(transport, sizeof(transport),
1030 "client_port=%d", port);
f830c9a4
RB
1031 if (rt->transport == RTSP_TRANSPORT_RTP &&
1032 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1033 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1034 }
1035
1036 /* RTP/TCP */
90abbdba 1037 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1038 /** For WMS streams, the application streams are only used for
1039 * UDP. When trying to set it up for TCP streams, the server
1040 * will return an error. Therefore, we skip those streams. */
1041 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1042 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1043 AVMEDIA_TYPE_DATA)
090438cc 1044 continue;
0ad306bc 1045 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1046 "%s/TCP;", trans_pref);
1047 if (rt->server_type == RTSP_SERVER_WMS)
1048 av_strlcat(transport, "unicast;", sizeof(transport));
1049 av_strlcatf(transport, sizeof(transport),
1050 "interleaved=%d-%d",
1051 interleave, interleave + 1);
1052 interleave += 2;
1617ad97
FB
1053 }
1054
90abbdba 1055 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1056 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1057 "%s/UDP;multicast", trans_pref);
1617ad97 1058 }
69adcc4f
MS
1059 if (s->oformat) {
1060 av_strlcat(transport, ";mode=receive", sizeof(transport));
1061 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1062 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1063 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1064 snprintf(cmd, sizeof(cmd),
b6892136 1065 "Transport: %s\r\n",
b17d11c6 1066 transport);
44b70ce5 1067 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1068 char real_res[41], real_csum[9];
1069 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1070 real_challenge);
1071 av_strlcatf(cmd, sizeof(cmd),
1072 "If-Match: %s\r\n"
1073 "RealChallenge2: %s, sd=%s\r\n",
1074 rt->session_id, real_res, real_csum);
1075 }
b17d11c6 1076 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1077 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1078 err = 1;
1079 goto fail;
7e6ca34f
RB
1080 } else if (reply->status_code != RTSP_STATUS_OK ||
1081 reply->nb_transports != 1) {
1617ad97
FB
1082 err = AVERROR_INVALIDDATA;
1083 goto fail;
1084 }
1085
1086 /* XXX: same protocol for all streams is required */
1087 if (i > 0) {
119b4668
RB
1088 if (reply->transports[0].lower_transport != rt->lower_transport ||
1089 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1090 err = AVERROR_INVALIDDATA;
1091 goto fail;
1092 }
1093 } else {
90abbdba 1094 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1095 rt->transport = reply->transports[0].transport;
1617ad97
FB
1096 }
1097
2901cc9a 1098 /* close RTP connection if not chosen */
90abbdba
RB
1099 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1100 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1101 url_close(rtsp_st->rtp_handle);
1102 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1103 }
1104
90abbdba
RB
1105 switch(reply->transports[0].lower_transport) {
1106 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1107 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1108 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1109 break;
115329f1 1110
c8965800
RB
1111 case RTSP_LOWER_TRANSPORT_UDP: {
1112 char url[1024];
1113
619298a8
JW
1114 /* Use source address if specified */
1115 if (reply->transports[0].source[0]) {
1116 ff_url_join(url, sizeof(url), "rtp", NULL,
1117 reply->transports[0].source,
1118 reply->transports[0].server_port_min, NULL);
1119 } else {
7bac991f
RB
1120 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1121 reply->transports[0].server_port_min, NULL);
619298a8 1122 }
c8965800
RB
1123 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1124 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1125 err = AVERROR_INVALIDDATA;
1126 goto fail;
1617ad97 1127 }
9c8fa20d
MS
1128 /* Try to initialize the connection state in a
1129 * potential NAT router by sending dummy packets.
1130 * RTP/RTCP dummy packets are used for RDT, too.
1131 */
44b70ce5
MS
1132 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1133 CONFIG_RTPDEC)
9c8fa20d 1134 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1135 break;
c8965800
RB
1136 }
1137 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1138 char url[1024], namebuf[50];
1139 struct sockaddr_storage addr;
c8965800
RB
1140 int port, ttl;
1141
7934b15d
MS
1142 if (reply->transports[0].destination.ss_family) {
1143 addr = reply->transports[0].destination;
c8965800
RB
1144 port = reply->transports[0].port_min;
1145 ttl = reply->transports[0].ttl;
1146 } else {
7934b15d 1147 addr = rtsp_st->sdp_ip;
c8965800
RB
1148 port = rtsp_st->sdp_port;
1149 ttl = rtsp_st->sdp_ttl;
1150 }
7934b15d
MS
1151 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1152 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1153 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1154 port, "?ttl=%d", ttl);
c8965800
RB
1155 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1156 err = AVERROR_INVALIDDATA;
1157 goto fail;
1617ad97
FB
1158 }
1159 break;
1160 }
c8965800 1161 }
d1ccf0e0 1162
ee0cb67f 1163 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1164 goto fail;
1617ad97
FB
1165 }
1166
30e79845
RB
1167 if (reply->timeout > 0)
1168 rt->timeout = reply->timeout;
1169
2e889ae4 1170 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1171 rt->need_subscription = 1;
1172
53620bba
RB
1173 return 0;
1174
1175fail:
c8965800 1176 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1177 if (rt->rtsp_streams[i]->rtp_handle) {
1178 url_close(rt->rtsp_streams[i]->rtp_handle);
1179 rt->rtsp_streams[i]->rtp_handle = NULL;
1180 }
1181 }
53620bba
RB
1182 return err;
1183}
1184
b8c2c41d
JA
1185void ff_rtsp_close_connections(AVFormatContext *s)
1186{
1187 RTSPState *rt = s->priv_data;
1188 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1189 url_close(rt->rtsp_hd);
6217b645 1190 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1191}
1192
3307e6ea 1193int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1194{
1195 RTSPState *rt = s->priv_data;
921da217
LB
1196 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1197 char *option_list, *option, *filename;
03f8fc08 1198 int port, err, tcp_fd;
354b7573 1199 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1200 int lower_transport_mask = 0;
1cf151e9 1201 char real_challenge[64];
03f8fc08
MS
1202 struct sockaddr_storage peer;
1203 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1204
1205 if (!ff_network_init())
1206 return AVERROR(EIO);
c8965800 1207redirect:
f5d33f52 1208 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1209 /* extract hostname and port */
f3bfe388 1210 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1211 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1212 if (*auth) {
aa8bf2fb 1213 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1214 }
53620bba
RB
1215 if (port < 0)
1216 port = RTSP_DEFAULT_PORT;
1217
1218 /* search for options */
602eb779 1219 option_list = strrchr(path, '?');
53620bba 1220 if (option_list) {
2a21adf9
MS
1221 /* Strip out the RTSP specific options, write out the rest of
1222 * the options back into the same string. */
1223 filename = option_list;
c8965800 1224 while (option_list) {
53620bba 1225 /* move the option pointer */
921da217 1226 option = ++option_list;
53620bba
RB
1227 option_list = strchr(option_list, '&');
1228 if (option_list)
921da217
LB
1229 *option_list = 0;
1230
53620bba 1231 /* handle the options */
c8965800 1232 if (!strcmp(option, "udp")) {
7a033e08 1233 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1234 } else if (!strcmp(option, "multicast")) {
7a033e08 1235 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1236 } else if (!strcmp(option, "tcp")) {
7a033e08 1237 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1238 } else if(!strcmp(option, "http")) {
1239 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1240 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1241 } else {
2a21adf9
MS
1242 /* Write options back into the buffer, using memmove instead
1243 * of strcpy since the strings may overlap. */
1244 int len = strlen(option);
1245 memmove(++filename, option, len);
1246 filename += len;
921da217
LB
1247 if (option_list) *filename = '&';
1248 }
53620bba 1249 }
921da217 1250 *filename = 0;
53620bba
RB
1251 }
1252
90abbdba 1253 if (!lower_transport_mask)
2a1d51c5 1254 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1255
3e24c770 1256 if (s->oformat) {
b7dc88fc
MS
1257 /* Only UDP or TCP - UDP multicast isn't supported. */
1258 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1259 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1260 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1261 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1262 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1263 err = AVERROR(EINVAL);
1264 goto fail;
1265 }
1266 }
1267
4bc5cc23
MS
1268 /* Construct the URI used in request; this is similar to s->filename,
1269 * but with authentication credentials removed and RTSP specific options
1270 * stripped out. */
1271 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1272 host, port, "%s", path);
1273
f5d33f52
JA
1274 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1275 /* set up initial handshake for tunneling */
1276 char httpname[1024];
1277 char sessioncookie[17];
1278 char headers[1024];
1279
10ed37b5 1280 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1281 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1282 av_get_random_seed(), av_get_random_seed());
1283
1284 /* GET requests */
9290f15d 1285 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1286 err = AVERROR(EIO);
1287 goto fail;
1288 }
1289
1290 /* generate GET headers */
1291 snprintf(headers, sizeof(headers),
1292 "x-sessioncookie: %s\r\n"
1293 "Accept: application/x-rtsp-tunnelled\r\n"
1294 "Pragma: no-cache\r\n"
1295 "Cache-Control: no-cache\r\n",
1296 sessioncookie);
00e4a1f4 1297 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1298
1299 /* complete the connection */
9290f15d 1300 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1301 err = AVERROR(EIO);
1302 goto fail;
1303 }
1304
1305 /* POST requests */
9290f15d 1306 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1307 err = AVERROR(EIO);
1308 goto fail;
1309 }
1310
1311 /* generate POST headers */
1312 snprintf(headers, sizeof(headers),
1313 "x-sessioncookie: %s\r\n"
1314 "Content-Type: application/x-rtsp-tunnelled\r\n"
1315 "Pragma: no-cache\r\n"
1316 "Cache-Control: no-cache\r\n"
1317 "Content-Length: 32767\r\n"
1318 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1319 sessioncookie);
00e4a1f4
JA
1320 ff_http_set_headers(rt->rtsp_hd_out, headers);
1321 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1322
a8ead332
MS
1323 /* Initialize the authentication state for the POST session. The HTTP
1324 * protocol implementation doesn't properly handle multi-pass
1325 * authentication for POST requests, since it would require one of
1326 * the following:
1327 * - implementing Expect: 100-continue, which many HTTP servers
1328 * don't support anyway, even less the RTSP servers that do HTTP
1329 * tunneling
1330 * - sending the whole POST data until getting a 401 reply specifying
1331 * what authentication method to use, then resending all that data
1332 * - waiting for potential 401 replies directly after sending the
1333 * POST header (waiting for some unspecified time)
1334 * Therefore, we copy the full auth state, which works for both basic
1335 * and digest. (For digest, we would have to synchronize the nonce
1336 * count variable between the two sessions, if we'd do more requests
1337 * with the original session, though.)
1338 */
1339 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1340
9290f15d
MS
1341 /* complete the connection */
1342 if (url_connect(rt->rtsp_hd_out)) {
1343 err = AVERROR(EIO);
1344 goto fail;
1345 }
f5d33f52 1346 } else {
48e77473 1347 /* open the tcp connection */
41874d0a 1348 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1349 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1350 err = AVERROR(EIO);
1351 goto fail;
1352 }
00e4a1f4 1353 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1354 }
53620bba
RB
1355 rt->seq = 0;
1356
00e4a1f4 1357 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1358 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1359 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1360 NULL, 0, NI_NUMERICHOST);
1361 }
1362
c8965800
RB
1363 /* request options supported by the server; this also detects server
1364 * type */
1cf151e9 1365 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1366 cmd[0] = 0;
2e889ae4 1367 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1368 av_strlcat(cmd,
1369 /**
1370 * The following entries are required for proper
1371 * streaming from a Realmedia server. They are
1372 * interdependent in some way although we currently
1373 * don't quite understand how. Values were copied
1374 * from mplayer SVN r23589.
1375 * @param CompanyID is a 16-byte ID in base64
1376 * @param ClientChallenge is a 16-byte ID in hex
1377 */
1378 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1379 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1380 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1381 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1382 sizeof(cmd));
b17d11c6 1383 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1384 if (reply->status_code != RTSP_STATUS_OK) {
1385 err = AVERROR_INVALIDDATA;
1386 goto fail;
1387 }
1388
1389 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1390 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1391 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1392 continue;
7a86bafa
RB
1393 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1394 rt->server_type = RTSP_SERVER_WMS;
c8965800 1395 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1396 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1397 break;
1398 }
1399
44b70ce5 1400 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1401 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1402 else if (CONFIG_RTSP_MUXER)
c2688f3a 1403 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1404 if (err)
53620bba 1405 goto fail;
53620bba 1406
8a8754d8 1407 do {
c8965800
RB
1408 int lower_transport = ff_log2_tab[lower_transport_mask &
1409 ~(lower_transport_mask - 1)];
8a8754d8 1410
90abbdba 1411 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1412 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1413 real_challenge : NULL);
8a8754d8 1414 if (err < 0)
7e6ca34f 1415 goto fail;
90abbdba
RB
1416 lower_transport_mask &= ~(1 << lower_transport);
1417 if (lower_transport_mask == 0 && err == 1) {
adef229e 1418 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1419 goto fail;
1420 }
1421 } while (err);
53620bba 1422
ff762d6e 1423 rt->state = RTSP_STATE_IDLE;
c8965800 1424 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1425 return 0;
1426 fail:
3307e6ea 1427 ff_rtsp_close_streams(s);
b8c2c41d 1428 ff_rtsp_close_connections(s);
35cfd646 1429 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1430 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1431 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1432 reply->status_code,
1433 s->filename);
1434 goto redirect;
1435 }
57b5555c 1436 ff_network_close();
1617ad97
FB
1437 return err;
1438}
2e802e38 1439#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1440
44b70ce5 1441#if CONFIG_RTPDEC
0e59034e 1442static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1443 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1444{
1445 RTSPState *rt = s->priv_data;
1446 RTSPStream *rtsp_st;
1447 fd_set rfds;
a1ba71aa 1448 int fd, fd_rtcp, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1449 struct timeval tv;
1450
c8965800 1451 for (;;) {
0e59034e
RB
1452 if (url_interrupt_cb())
1453 return AVERROR(EINTR);
321259c1
MS
1454 if (wait_end && wait_end - av_gettime() < 0)
1455 return AVERROR(EAGAIN);
0e59034e
RB
1456 FD_ZERO(&rfds);
1457 if (rt->rtsp_hd) {
1458 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1459 FD_SET(tcp_fd, &rfds);
1460 } else {
1461 fd_max = 0;
1462 tcp_fd = -1;
1463 }
c8965800 1464 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1465 rtsp_st = rt->rtsp_streams[i];
1466 if (rtsp_st->rtp_handle) {
0e59034e 1467 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1468 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1469 if (FFMAX(fd, fd_rtcp) > fd_max)
1470 fd_max = FFMAX(fd, fd_rtcp);
0e59034e 1471 FD_SET(fd, &rfds);
a1ba71aa 1472 FD_SET(fd_rtcp, &rfds);
0e59034e
RB
1473 }
1474 }
1475 tv.tv_sec = 0;
9cba6f5f 1476 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1477 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1478 if (n > 0) {
9cba6f5f 1479 timeout_cnt = 0;
c8965800 1480 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1481 rtsp_st = rt->rtsp_streams[i];
1482 if (rtsp_st->rtp_handle) {
1483 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1484 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1485 if (FD_ISSET(fd_rtcp, &rfds) || FD_ISSET(fd, &rfds)) {
0e59034e
RB
1486 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1487 if (ret > 0) {
1488 *prtsp_st = rtsp_st;
1489 return ret;
1490 }
1491 }
1492 }
1493 }
5fe8021a 1494#if CONFIG_RTSP_DEMUXER
27000636 1495 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1496 RTSPMessageHeader reply;
1497
3032276b
MS
1498 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1499 if (ret < 0)
1500 return ret;
0e59034e 1501 /* XXX: parse message */
c02fd3d2 1502 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1503 return 0;
1504 }
5fe8021a 1505#endif
9cba6f5f 1506 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1507 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1508 } else if (n < 0 && errno != EINTR)
1509 return AVERROR(errno);
0e59034e
RB
1510 }
1511}
1512
0526c6f7 1513int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1514{
1515 RTSPState *rt = s->priv_data;
1516 int ret, len;
321259c1
MS
1517 RTSPStream *rtsp_st, *first_queue_st = NULL;
1518 int64_t wait_end = 0;
0e59034e 1519
b20359f5
JA
1520 if (rt->nb_byes == rt->nb_rtsp_streams)
1521 return AVERROR_EOF;
1522
0e59034e
RB
1523 /* get next frames from the same RTP packet */
1524 if (rt->cur_transport_priv) {
c8965800 1525 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1526 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1527 } else
0e59034e
RB
1528 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1529 if (ret == 0) {
1530 rt->cur_transport_priv = NULL;
1531 return 0;
1532 } else if (ret == 1) {
1533 return 0;
c8965800 1534 } else
0e59034e 1535 rt->cur_transport_priv = NULL;
0e59034e
RB
1536 }
1537
321259c1
MS
1538 if (rt->transport == RTSP_TRANSPORT_RTP) {
1539 int i;
1540 int64_t first_queue_time = 0;
1541 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1542 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
1543 int64_t queue_time = ff_rtp_queued_packet_time(rtpctx);
1544 if (queue_time && (queue_time - first_queue_time < 0 ||
1545 !first_queue_time)) {
1546 first_queue_time = queue_time;
1547 first_queue_st = rt->rtsp_streams[i];
1548 }
1549 }
1550 if (first_queue_time)
1551 wait_end = first_queue_time + s->max_delay;
1552 }
1553
0e59034e
RB
1554 /* read next RTP packet */
1555 redo:
96a7c975
MS
1556 if (!rt->recvbuf) {
1557 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1558 if (!rt->recvbuf)
1559 return AVERROR(ENOMEM);
1560 }
1561
0e59034e
RB
1562 switch(rt->lower_transport) {
1563 default:
5fe8021a 1564#if CONFIG_RTSP_DEMUXER
0e59034e 1565 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1566 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1567 break;
5fe8021a 1568#endif
0e59034e
RB
1569 case RTSP_LOWER_TRANSPORT_UDP:
1570 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1571 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
0e59034e
RB
1572 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1573 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1574 break;
1575 }
321259c1
MS
1576 if (len == AVERROR(EAGAIN) && first_queue_st &&
1577 rt->transport == RTSP_TRANSPORT_RTP) {
1578 rtsp_st = first_queue_st;
1579 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1580 goto end;
1581 }
0e59034e
RB
1582 if (len < 0)
1583 return len;
1584 if (len == 0)
1585 return AVERROR_EOF;
c8965800 1586 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1587 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1588 } else {
ad4ad27f 1589 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1590 if (ret < 0) {
1591 /* Either bad packet, or a RTCP packet. Check if the
1592 * first_rtcp_ntp_time field was initialized. */
1593 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1594 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1595 /* first_rtcp_ntp_time has been initialized for this stream,
1596 * copy the same value to all other uninitialized streams,
1597 * in order to map their timestamp origin to the same ntp time
1598 * as this one. */
1599 int i;
1600 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1601 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
2cab6b48
MS
1602 if (rtpctx2 &&
1603 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE)
1604 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
1605 }
1606 }
b20359f5
JA
1607 if (ret == -RTCP_BYE) {
1608 rt->nb_byes++;
1609
1610 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1611 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1612
1613 if (rt->nb_byes == rt->nb_rtsp_streams)
1614 return AVERROR_EOF;
1615 }
2cab6b48
MS
1616 }
1617 }
321259c1 1618end:
0e59034e
RB
1619 if (ret < 0)
1620 goto redo;
c8965800 1621 if (ret == 1)
0e59034e
RB
1622 /* more packets may follow, so we save the RTP context */
1623 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1624
1625 return ret;
1626}
44b70ce5 1627#endif /* CONFIG_RTPDEC */
0e59034e 1628
44b70ce5 1629#if CONFIG_SDP_DEMUXER
cb1fdc61 1630static int sdp_probe(AVProbeData *p1)
93ced3e8 1631{
0e1ceacd 1632 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1633
3fbd12d1 1634 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1635 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1636 if (p + sizeof("c=IN IP") - 1 < p_end &&
1637 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1638 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1639
c8965800 1640 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1641 if (++p >= p_end)
cb1fdc61 1642 break;
cb1fdc61
FB
1643 if (*p == '\r')
1644 p++;
1645 }
93ced3e8
FB
1646 return 0;
1647}
1648
c8965800 1649static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1650{
8b1ab7bf 1651 RTSPState *rt = s->priv_data;
93ced3e8
FB
1652 RTSPStream *rtsp_st;
1653 int size, i, err;
1654 char *content;
1655 char url[1024];
1656
57b5555c
MS
1657 if (!ff_network_init())
1658 return AVERROR(EIO);
1659
93ced3e8
FB
1660 /* read the whole sdp file */
1661 /* XXX: better loading */
1662 content = av_malloc(SDP_MAX_SIZE);
899681cd 1663 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1664 if (size <= 0) {
1665 av_free(content);
1666 return AVERROR_INVALIDDATA;
1667 }
1668 content[size] ='\0';
1669
0526c6f7 1670 ff_sdp_parse(s, content);
93ced3e8
FB
1671 av_free(content);
1672
1673 /* open each RTP stream */
c8965800 1674 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1675 char namebuf[50];
8b1ab7bf 1676 rtsp_st = rt->rtsp_streams[i];
115329f1 1677
3fbd12d1
MS
1678 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1679 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1680 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1681 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1682 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1683 rtsp_st->sdp_ttl);
dbf30963 1684 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1685 err = AVERROR_INVALIDDATA;
1686 goto fail;
1687 }
ee0cb67f 1688 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1689 goto fail;
93ced3e8
FB
1690 }
1691 return 0;
c8965800 1692fail:
3307e6ea 1693 ff_rtsp_close_streams(s);
57b5555c 1694 ff_network_close();
93ced3e8
FB
1695 return err;
1696}
1697
93ced3e8
FB
1698static int sdp_read_close(AVFormatContext *s)
1699{
3307e6ea 1700 ff_rtsp_close_streams(s);
57b5555c 1701 ff_network_close();
93ced3e8
FB
1702 return 0;
1703}
1704
ff70e601 1705AVInputFormat sdp_demuxer = {
93ced3e8 1706 "sdp",
bde15e74 1707 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1708 sizeof(RTSPState),
1709 sdp_probe,
1710 sdp_read_header,
0526c6f7 1711 ff_rtsp_fetch_packet,
93ced3e8
FB
1712 sdp_read_close,
1713};
44b70ce5 1714#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1715
44b70ce5 1716#if CONFIG_RTP_DEMUXER
44594cc7
MS
1717static int rtp_probe(AVProbeData *p)
1718{
1719 if (av_strstart(p->filename, "rtp:", NULL))
1720 return AVPROBE_SCORE_MAX;
1721 return 0;
1722}
1723
1724static int rtp_read_header(AVFormatContext *s,
1725 AVFormatParameters *ap)
1726{
1727 uint8_t recvbuf[1500];
1728 char host[500], sdp[500];
1729 int ret, port;
1730 URLContext* in = NULL;
1731 int payload_type;
1732 AVCodecContext codec;
1733 struct sockaddr_storage addr;
1734 ByteIOContext pb;
1735 socklen_t addrlen = sizeof(addr);
1736
1737 if (!ff_network_init())
1738 return AVERROR(EIO);
1739
1740 ret = url_open(&in, s->filename, URL_RDONLY);
1741 if (ret)
1742 goto fail;
1743
1744 while (1) {
1745 ret = url_read(in, recvbuf, sizeof(recvbuf));
1746 if (ret == AVERROR(EAGAIN))
1747 continue;
1748 if (ret < 0)
1749 goto fail;
1750 if (ret < 12) {
1751 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1752 continue;
1753 }
1754
1755 if ((recvbuf[0] & 0xc0) != 0x80) {
1756 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1757 "received\n");
1758 continue;
1759 }
1760
1761 payload_type = recvbuf[1] & 0x7f;
1762 break;
1763 }
1764 getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
1765 url_close(in);
1766 in = NULL;
1767
1768 memset(&codec, 0, sizeof(codec));
1769 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1770 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1771 "without an SDP file describing it\n",
1772 payload_type);
1773 goto fail;
1774 }
1775 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1776 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1777 "properly you need an SDP file "
1778 "describing it\n");
1779 }
1780
1781 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1782 NULL, 0, s->filename);
1783
1784 snprintf(sdp, sizeof(sdp),
1785 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1786 addr.ss_family == AF_INET ? 4 : 6, host,
1787 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1788 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1789 port, payload_type);
1790 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1791
1792 init_put_byte(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
1793 s->pb = &pb;
1794
1795 /* sdp_read_header initializes this again */
1796 ff_network_close();
1797
1798 ret = sdp_read_header(s, ap);
1799 s->pb = NULL;
1800 return ret;
1801
1802fail:
1803 if (in)
1804 url_close(in);
1805 ff_network_close();
1806 return ret;
1807}
1808
1809AVInputFormat rtp_demuxer = {
1810 "rtp",
1811 NULL_IF_CONFIG_SMALL("RTP input format"),
1812 sizeof(RTSPState),
1813 rtp_probe,
1814 rtp_read_header,
0526c6f7 1815 ff_rtsp_fetch_packet,
44594cc7
MS
1816 sdp_read_close,
1817 .flags = AVFMT_NOFILE,
1818};
44b70ce5 1819#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1820