rtpdec: Handle MP3 in RealRTSP
[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) {
6a7e31a9 329 RTPDynamicProtocolHandler *handler;
8b1ab7bf 330 /* if standard payload type, we can find the codec right now */
bf6d9818 331 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
6a7e31a9
MS
332 /* Even static payload types may need a custom depacketizer */
333 handler = ff_rtp_handler_find_by_id(
334 rtsp_st->sdp_payload_type, st->codec->codec_type);
335 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
336 }
337 }
1617ad97 338 /* put a default control url */
00eb13e0 339 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 340 sizeof(rtsp_st->control_url));
1617ad97
FB
341 break;
342 case 'a':
00eb13e0
AS
343 if (av_strstart(p, "control:", &p)) {
344 if (s->nb_streams == 0) {
345 if (!strncmp(p, "rtsp://", 7))
346 av_strlcpy(rt->control_uri, p,
347 sizeof(rt->control_uri));
348 } else {
0b6a7ff4
MS
349 char proto[32];
350 /* get the control url */
351 st = s->streams[s->nb_streams - 1];
352 rtsp_st = st->priv_data;
115329f1 353
0b6a7ff4
MS
354 /* XXX: may need to add full url resolution */
355 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
356 NULL, NULL, 0, p);
357 if (proto[0] == '\0') {
358 /* relative control URL */
359 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
360 av_strlcat(rtsp_st->control_url, "/",
361 sizeof(rtsp_st->control_url));
362 av_strlcat(rtsp_st->control_url, p,
363 sizeof(rtsp_st->control_url));
364 } else
365 av_strlcpy(rtsp_st->control_url, p,
366 sizeof(rtsp_st->control_url));
00eb13e0 367 }
83d14c85 368 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 369 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 370 get_word(buf1, sizeof(buf1), &p);
93ced3e8 371 payload_type = atoi(buf1);
83d14c85 372 st = s->streams[s->nb_streams - 1];
ff16f551 373 rtsp_st = st->priv_data;
8f3c87f3 374 sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p);
7fc8ac7f
JA
375 } else if (av_strstart(p, "fmtp:", &p) ||
376 av_strstart(p, "framesize:", &p)) {
93ced3e8 377 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
378 // let dynamic protocol handlers have a stab at the line.
379 get_word(buf1, sizeof(buf1), &p);
380 payload_type = atoi(buf1);
c8965800
RB
381 for (i = 0; i < s->nb_streams; i++) {
382 st = s->streams[i];
d0deedcb 383 rtsp_st = st->priv_data;
c8965800
RB
384 if (rtsp_st->sdp_payload_type == payload_type &&
385 rtsp_st->dynamic_handler &&
386 rtsp_st->dynamic_handler->parse_sdp_a_line)
387 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
388 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 389 }
c8965800 390 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
391 int64_t start, end;
392
393 // this is so that seeking on a streamed file can work.
394 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
395 s->start_time = start;
396 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
397 s->duration = (end == AV_NOPTS_VALUE) ?
398 AV_NOPTS_VALUE : end - start;
119b4668
RB
399 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
400 if (atoi(p) == 1)
401 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
402 } else {
403 if (rt->server_type == RTSP_SERVER_WMS)
404 ff_wms_parse_sdp_a_line(s, p);
405 if (s->nb_streams > 0) {
c4a3d032
RB
406 if (rt->server_type == RTSP_SERVER_REAL)
407 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
408
409 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
410 if (rtsp_st->dynamic_handler &&
411 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
412 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
413 s->nb_streams - 1,
c4a3d032 414 rtsp_st->dynamic_protocol_context, buf);
1a30d541 415 }
1617ad97
FB
416 }
417 break;
418 }
419}
420
0526c6f7 421int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
422{
423 const char *p;
424 int letter;
9211bcdd
RB
425 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
426 * contain long SDP lines containing complete ASF Headers (several
427 * kB) or arrays of MDPR (RM stream descriptor) headers plus
428 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
429 * buffer is large.
430 *
afcea58c
JA
431 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
432 * in rtpdec_xiph.c. */
373afbaf 433 char buf[16384], *q;
93ced3e8 434 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 435
93ced3e8 436 memset(s1, 0, sizeof(SDPParseState));
1617ad97 437 p = content;
c8965800 438 for (;;) {
30619e6e 439 p += strspn(p, SPACE_CHARS);
1617ad97
FB
440 letter = *p;
441 if (letter == '\0')
442 break;
443 p++;
444 if (*p != '=')
445 goto next_line;
446 p++;
447 /* get the content */
448 q = buf;
b6892136 449 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
450 if ((q - buf) < sizeof(buf) - 1)
451 *q++ = *p;
452 p++;
453 }
454 *q = '\0';
93ced3e8 455 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
456 next_line:
457 while (*p != '\n' && *p != '\0')
458 p++;
459 if (*p == '\n')
460 p++;
461 }
462 return 0;
463}
44b70ce5 464#endif /* CONFIG_RTPDEC */
1617ad97 465
1ced9da3 466/* close and free RTSP streams */
3307e6ea 467void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 468{
52aa4338 469 RTSPState *rt = s->priv_data;
1ced9da3
LA
470 int i;
471 RTSPStream *rtsp_st;
472
c8965800 473 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
474 rtsp_st = rt->rtsp_streams[i];
475 if (rtsp_st) {
476 if (rtsp_st->transport_priv) {
fd450a51
MS
477 if (s->oformat) {
478 AVFormatContext *rtpctx = rtsp_st->transport_priv;
479 av_write_trailer(rtpctx);
b7dc88fc
MS
480 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
481 uint8_t *ptr;
482 url_close_dyn_buf(rtpctx->pb, &ptr);
483 av_free(ptr);
484 } else {
685e76b5 485 url_fclose(rtpctx->pb);
b7dc88fc 486 }
f86f6656
MS
487 av_metadata_free(&rtpctx->streams[0]->metadata);
488 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
489 av_free(rtpctx->streams[0]);
490 av_free(rtpctx);
44b70ce5 491 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3 492 ff_rdt_parse_close(rtsp_st->transport_priv);
44b70ce5 493 else if (CONFIG_RTPDEC)
1ced9da3
LA
494 rtp_parse_close(rtsp_st->transport_priv);
495 }
496 if (rtsp_st->rtp_handle)
497 url_close(rtsp_st->rtp_handle);
498 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
499 rtsp_st->dynamic_handler->close(
500 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
501 }
502 }
503 av_free(rt->rtsp_streams);
504 if (rt->asf_ctx) {
505 av_close_input_stream (rt->asf_ctx);
506 rt->asf_ctx = NULL;
507 }
96a7c975 508 av_free(rt->recvbuf);
1ced9da3
LA
509}
510
c8965800 511static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
512{
513 RTSPState *rt = s->priv_data;
514 AVStream *st = NULL;
515
516 /* open the RTP context */
517 if (rtsp_st->stream_index >= 0)
518 st = s->streams[rtsp_st->stream_index];
519 if (!st)
520 s->ctx_flags |= AVFMTCTX_NOHEADER;
521
44b70ce5 522 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
523 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
524 rtsp_st->rtp_handle,
525 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 526 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 527 rtsp_st->rtp_handle = NULL;
44b70ce5 528 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
529 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
530 rtsp_st->dynamic_protocol_context,
531 rtsp_st->dynamic_handler);
44b70ce5 532 else if (CONFIG_RTPDEC)
1ced9da3 533 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
534 rtsp_st->sdp_payload_type,
535 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
536 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
537
538 if (!rtsp_st->transport_priv) {
539 return AVERROR(ENOMEM);
44b70ce5 540 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 541 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
542 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
543 rtsp_st->dynamic_protocol_context,
544 rtsp_st->dynamic_handler);
545 }
546 }
547
548 return 0;
549}
550
6f5a3d0a 551#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
552static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
553{
554 const char *p;
555 int v;
556
557 p = *pp;
30619e6e 558 p += strspn(p, SPACE_CHARS);
1617ad97
FB
559 v = strtol(p, (char **)&p, 10);
560 if (*p == '-') {
561 p++;
562 *min_ptr = v;
563 v = strtol(p, (char **)&p, 10);
564 *max_ptr = v;
565 } else {
566 *min_ptr = v;
567 *max_ptr = v;
568 }
569 *pp = p;
570}
571
572/* XXX: only one transport specification is parsed */
a9e534d5 573static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
574{
575 char transport_protocol[16];
576 char profile[16];
577 char lower_transport[16];
578 char parameter[16];
579 RTSPTransportField *th;
580 char buf[256];
115329f1 581
1617ad97 582 reply->nb_transports = 0;
115329f1 583
c8965800 584 for (;;) {
30619e6e 585 p += strspn(p, SPACE_CHARS);
1617ad97
FB
586 if (*p == '\0')
587 break;
588
589 th = &reply->transports[reply->nb_transports];
590
115329f1 591 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 592 "/", &p);
e1502118 593 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
594 get_word_sep(profile, sizeof(profile), "/;,", &p);
595 lower_transport[0] = '\0';
596 /* rtp/avp/<protocol> */
597 if (*p == '/') {
7ecc634e
LB
598 get_word_sep(lower_transport, sizeof(lower_transport),
599 ";,", &p);
119b4668
RB
600 }
601 th->transport = RTSP_TRANSPORT_RTP;
602 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
603 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 604 /* x-pn-tng/<protocol> */
e1502118
LB
605 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
606 profile[0] = '\0';
119b4668 607 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 608 }
b6892136 609 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 610 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 611 else
90abbdba 612 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 613
1617ad97
FB
614 if (*p == ';')
615 p++;
616 /* get each parameter */
617 while (*p != '\0' && *p != ',') {
618 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
619 if (!strcmp(parameter, "port")) {
620 if (*p == '=') {
621 p++;
622 rtsp_parse_range(&th->port_min, &th->port_max, &p);
623 }
624 } else if (!strcmp(parameter, "client_port")) {
625 if (*p == '=') {
626 p++;
115329f1 627 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
628 &th->client_port_max, &p);
629 }
630 } else if (!strcmp(parameter, "server_port")) {
631 if (*p == '=') {
632 p++;
115329f1 633 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
634 &th->server_port_max, &p);
635 }
636 } else if (!strcmp(parameter, "interleaved")) {
637 if (*p == '=') {
638 p++;
115329f1 639 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
640 &th->interleaved_max, &p);
641 }
642 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
643 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
644 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
645 } else if (!strcmp(parameter, "ttl")) {
646 if (*p == '=') {
647 p++;
648 th->ttl = strtol(p, (char **)&p, 10);
649 }
650 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
651 if (*p == '=') {
652 p++;
653 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 654 get_sockaddr(buf, &th->destination);
1617ad97 655 }
619298a8
JW
656 } else if (!strcmp(parameter, "source")) {
657 if (*p == '=') {
658 p++;
659 get_word_sep(buf, sizeof(buf), ";,", &p);
660 av_strlcpy(th->source, buf, sizeof(th->source));
661 }
1617ad97 662 }
619298a8 663
1617ad97
FB
664 while (*p != ';' && *p != '\0' && *p != ',')
665 p++;
666 if (*p == ';')
667 p++;
668 }
669 if (*p == ',')
670 p++;
671
672 reply->nb_transports++;
673 }
674}
675
2626308a
MS
676void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
677 HTTPAuthState *auth_state)
1617ad97
FB
678{
679 const char *p;
680
681 /* NOTE: we do case independent match for broken servers */
682 p = buf;
f7d78f36 683 if (av_stristart(p, "Session:", &p)) {
30e79845 684 int t;
1617ad97 685 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
686 if (av_stristart(p, ";timeout=", &p) &&
687 (t = strtol(p, NULL, 10)) > 0) {
688 reply->timeout = t;
689 }
f7d78f36 690 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 691 reply->content_length = strtol(p, NULL, 10);
f7d78f36 692 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 693 rtsp_parse_transport(reply, p);
f7d78f36 694 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 695 reply->seq = strtol(p, NULL, 10);
f7d78f36 696 } else if (av_stristart(p, "Range:", &p)) {
31693e00 697 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 698 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 699 p += strspn(p, SPACE_CHARS);
30aa6aed 700 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 701 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 702 p += strspn(p, SPACE_CHARS);
7a86bafa 703 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
704 } else if (av_stristart(p, "Notice:", &p) ||
705 av_stristart(p, "X-Notice:", &p)) {
706 reply->notice = strtol(p, NULL, 10);
d243ba30 707 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 708 p += strspn(p, SPACE_CHARS);
d243ba30 709 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a 710 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
30619e6e 711 p += strspn(p, SPACE_CHARS);
2626308a
MS
712 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
713 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
30619e6e 714 p += strspn(p, SPACE_CHARS);
2626308a 715 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
dd22cfb1
MS
716 } else if (av_stristart(p, "Content-Base:", &p)) {
717 p += strspn(p, SPACE_CHARS);
718 av_strlcpy(reply->content_base, p , sizeof(reply->content_base));
1617ad97
FB
719 }
720}
721
b7b8fc34 722/* skip a RTP/TCP interleaved packet */
ec55edba 723void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
724{
725 RTSPState *rt = s->priv_data;
726 int ret, len, len1;
727 uint8_t buf[1024];
728
0e848977 729 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
730 if (ret != 3)
731 return;
80fb8234 732 len = AV_RB16(buf + 1);
67c9cd69
BC
733
734 dprintf(s, "skipping RTP packet len=%d\n", len);
735
b7b8fc34
FB
736 /* skip payload */
737 while (len > 0) {
738 len1 = len;
739 if (len1 > sizeof(buf))
740 len1 = sizeof(buf);
0e848977 741 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
742 if (ret != len1)
743 return;
744 len -= len1;
745 }
746}
1617ad97 747
3307e6ea 748int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
749 unsigned char **content_ptr,
750 int return_on_interleaved_data)
1617ad97
FB
751{
752 RTSPState *rt = s->priv_data;
753 char buf[4096], buf1[1024], *q;
754 unsigned char ch;
755 const char *p;
7e726132 756 int ret, content_length, line_count = 0;
1617ad97
FB
757 unsigned char *content = NULL;
758
d541a7d2 759 memset(reply, 0, sizeof(*reply));
1617ad97 760
1617ad97 761 /* parse reply (XXX: use buffers) */
1617ad97 762 rt->last_reply[0] = '\0';
c8965800 763 for (;;) {
1617ad97 764 q = buf;
c8965800 765 for (;;) {
0e848977 766 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 767#ifdef DEBUG_RTP_TCP
67c9cd69 768 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
769#endif
770 if (ret != 1)
2401660d 771 return AVERROR_EOF;
1617ad97
FB
772 if (ch == '\n')
773 break;
b7b8fc34
FB
774 if (ch == '$') {
775 /* XXX: only parse it if first char on line ? */
7e726132
RB
776 if (return_on_interleaved_data) {
777 return 1;
778 } else
ec55edba 779 ff_rtsp_skip_packet(s);
b7b8fc34 780 } else if (ch != '\r') {
1617ad97
FB
781 if ((q - buf) < sizeof(buf) - 1)
782 *q++ = ch;
783 }
784 }
785 *q = '\0';
67c9cd69
BC
786
787 dprintf(s, "line='%s'\n", buf);
788
1617ad97
FB
789 /* test if last line */
790 if (buf[0] == '\0')
791 break;
792 p = buf;
793 if (line_count == 0) {
794 /* get reply code */
795 get_word(buf1, sizeof(buf1), &p);
796 get_word(buf1, sizeof(buf1), &p);
797 reply->status_code = atoi(buf1);
d93fdcbf 798 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 799 } else {
2626308a 800 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
801 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
802 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
803 }
804 line_count++;
805 }
115329f1 806
1617ad97 807 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 808 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 809
1617ad97
FB
810 content_length = reply->content_length;
811 if (content_length > 0) {
812 /* leave some room for a trailing '\0' (useful for simple parsing) */
813 content = av_malloc(content_length + 1);
0e848977 814 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
815 content[content_length] = '\0';
816 }
817 if (content_ptr)
818 *content_ptr = content;
e2e2e7dd
AB
819 else
820 av_free(content);
7e726132 821
7ed8211b
LB
822 if (rt->seq != reply->seq) {
823 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
824 rt->seq, reply->seq);
825 }
826
fccb1770
RB
827 /* EOS */
828 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
829 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 830 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 831 rt->state = RTSP_STATE_IDLE;
c8965800 832 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 833 return AVERROR(EIO); /* data or server error */
c8965800 834 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
835 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
836 return AVERROR(EPERM);
837
7e726132 838 return 0;
1617ad97
FB
839}
840
d0382374 841int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
842 const char *method, const char *url,
843 const char *headers,
844 const unsigned char *send_content,
845 int send_content_length)
29b9f58b
RB
846{
847 RTSPState *rt = s->priv_data;
f5d33f52
JA
848 char buf[4096], *out_buf;
849 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 850
f5d33f52
JA
851 /* Add in RTSP headers */
852 out_buf = buf;
29b9f58b 853 rt->seq++;
b17d11c6
MS
854 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
855 if (headers)
856 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 857 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
858 if (rt->session_id[0] != '\0' && (!headers ||
859 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 860 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 861 }
aa8bf2fb
MS
862 if (rt->auth[0]) {
863 char *str = ff_http_auth_create_response(&rt->auth_state,
864 rt->auth, url, method);
865 if (str)
866 av_strlcat(buf, str, sizeof(buf));
867 av_free(str);
868 }
dfd017bf
MS
869 if (send_content_length > 0 && send_content)
870 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 871 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 872
f5d33f52
JA
873 /* base64 encode rtsp if tunneling */
874 if (rt->control_transport == RTSP_MODE_TUNNEL) {
875 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
876 out_buf = base64buf;
877 }
878
67c9cd69
BC
879 dprintf(s, "Sending:\n%s--\n", buf);
880
f5d33f52
JA
881 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
882 if (send_content_length > 0 && send_content) {
883 if (rt->control_transport == RTSP_MODE_TUNNEL) {
884 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
885 "with content data not supported\n");
886 return AVERROR_PATCHWELCOME;
887 }
b8c2c41d 888 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 889 }
30e79845 890 rt->last_cmd_time = av_gettime();
d0382374
JA
891
892 return 0;
30e79845
RB
893}
894
d0382374 895int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 896 const char *url, const char *headers)
dfd017bf 897{
d0382374 898 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
899}
900
d0382374 901int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
902 const char *headers, RTSPMessageHeader *reply,
903 unsigned char **content_ptr)
30e79845 904{
d0382374 905 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 906 content_ptr, NULL, 0);
29b9f58b
RB
907}
908
d0382374 909int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
910 const char *method, const char *url,
911 const char *header,
912 RTSPMessageHeader *reply,
913 unsigned char **content_ptr,
914 const unsigned char *send_content,
915 int send_content_length)
dfd017bf 916{
30af0779
MS
917 RTSPState *rt = s->priv_data;
918 HTTPAuthType cur_auth_type;
d0382374 919 int ret;
30af0779
MS
920
921retry:
922 cur_auth_type = rt->auth_state.auth_type;
d0382374 923 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
924 send_content,
925 send_content_length)))
d0382374 926 return ret;
dfd017bf 927
d0382374
JA
928 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
929 return ret;
30af0779
MS
930
931 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
932 rt->auth_state.auth_type != HTTP_AUTH_NONE)
933 goto retry;
d0382374 934
bf55cf19 935 if (reply->status_code > 400){
d93fdcbf 936 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 937 method,
d93fdcbf
LB
938 reply->status_code,
939 reply->reason);
bf55cf19
LB
940 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
941 }
942
d0382374 943 return 0;
dfd017bf
MS
944}
945
53620bba 946/**
32e543f8 947 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 948 */
c8965800
RB
949static int make_setup_request(AVFormatContext *s, const char *host, int port,
950 int lower_transport, const char *real_challenge)
1617ad97
FB
951{
952 RTSPState *rt = s->priv_data;
f830c9a4 953 int rtx, j, i, err, interleave = 0;
1617ad97 954 RTSPStream *rtsp_st;
a9e534d5 955 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 956 char cmd[2048];
e9dea59f
RB
957 const char *trans_pref;
958
119b4668 959 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
960 trans_pref = "x-pn-tng";
961 else
962 trans_pref = "RTP/AVP";
115329f1 963
30e79845
RB
964 /* default timeout: 1 minute */
965 rt->timeout = 60;
966
1617ad97
FB
967 /* for each stream, make the setup request */
968 /* XXX: we assume the same server is used for the control of each
c8965800 969 * RTSP stream */
d1ccf0e0 970
c8965800 971 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
972 char transport[2048];
973
f830c9a4
RB
974 /**
975 * WMS serves all UDP data over a single connection, the RTX, which
976 * isn't necessarily the first in the SDP but has to be the first
977 * to be set up, else the second/third SETUP will fail with a 461.
978 */
979 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
980 rt->server_type == RTSP_SERVER_WMS) {
981 if (i == 0) {
982 /* rtx first */
983 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
984 int len = strlen(rt->rtsp_streams[rtx]->control_url);
985 if (len >= 4 &&
c8965800
RB
986 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
987 "/rtx"))
f830c9a4
RB
988 break;
989 }
990 if (rtx == rt->nb_rtsp_streams)
991 return -1; /* no RTX found */
992 rtsp_st = rt->rtsp_streams[rtx];
993 } else
994 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
995 } else
2fea9650 996 rtsp_st = rt->rtsp_streams[i];
1617ad97 997
1617ad97 998 /* RTP/UDP */
90abbdba 999 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1000 char buf[256];
85fb7b34 1001
f830c9a4
RB
1002 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1003 port = reply->transports[0].client_port_min;
1004 goto have_port;
1005 }
1006
85fb7b34 1007 /* first try in specified port range */
d1ccf0e0 1008 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1009 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1010 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1011 "?localport=%d", j);
c8965800
RB
1012 /* we will use two ports per rtp stream (rtp and rtcp) */
1013 j += 2;
1014 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1015 goto rtp_opened;
1016 }
1617ad97 1017 }
85fb7b34 1018
c8965800
RB
1019#if 0
1020 /* then try on any port */
1021 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1022 err = AVERROR_INVALIDDATA;
1023 goto fail;
1024 }
1025#endif
85fb7b34
FB
1026
1027 rtp_opened:
67f34aaa 1028 port = rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1029 have_port:
0ad306bc 1030 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1031 "%s/UDP;", trans_pref);
1032 if (rt->server_type != RTSP_SERVER_REAL)
1033 av_strlcat(transport, "unicast;", sizeof(transport));
1034 av_strlcatf(transport, sizeof(transport),
1035 "client_port=%d", port);
f830c9a4
RB
1036 if (rt->transport == RTSP_TRANSPORT_RTP &&
1037 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1038 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1039 }
1040
1041 /* RTP/TCP */
90abbdba 1042 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1043 /** For WMS streams, the application streams are only used for
1044 * UDP. When trying to set it up for TCP streams, the server
1045 * will return an error. Therefore, we skip those streams. */
1046 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1047 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1048 AVMEDIA_TYPE_DATA)
090438cc 1049 continue;
0ad306bc 1050 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1051 "%s/TCP;", trans_pref);
1052 if (rt->server_type == RTSP_SERVER_WMS)
1053 av_strlcat(transport, "unicast;", sizeof(transport));
1054 av_strlcatf(transport, sizeof(transport),
1055 "interleaved=%d-%d",
1056 interleave, interleave + 1);
1057 interleave += 2;
1617ad97
FB
1058 }
1059
90abbdba 1060 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1061 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1062 "%s/UDP;multicast", trans_pref);
1617ad97 1063 }
69adcc4f
MS
1064 if (s->oformat) {
1065 av_strlcat(transport, ";mode=receive", sizeof(transport));
1066 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1067 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1068 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1069 snprintf(cmd, sizeof(cmd),
b6892136 1070 "Transport: %s\r\n",
b17d11c6 1071 transport);
44b70ce5 1072 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1073 char real_res[41], real_csum[9];
1074 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1075 real_challenge);
1076 av_strlcatf(cmd, sizeof(cmd),
1077 "If-Match: %s\r\n"
1078 "RealChallenge2: %s, sd=%s\r\n",
1079 rt->session_id, real_res, real_csum);
1080 }
b17d11c6 1081 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1082 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1083 err = 1;
1084 goto fail;
7e6ca34f
RB
1085 } else if (reply->status_code != RTSP_STATUS_OK ||
1086 reply->nb_transports != 1) {
1617ad97
FB
1087 err = AVERROR_INVALIDDATA;
1088 goto fail;
1089 }
1090
1091 /* XXX: same protocol for all streams is required */
1092 if (i > 0) {
119b4668
RB
1093 if (reply->transports[0].lower_transport != rt->lower_transport ||
1094 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1095 err = AVERROR_INVALIDDATA;
1096 goto fail;
1097 }
1098 } else {
90abbdba 1099 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1100 rt->transport = reply->transports[0].transport;
1617ad97
FB
1101 }
1102
2901cc9a 1103 /* close RTP connection if not chosen */
90abbdba
RB
1104 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1105 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1106 url_close(rtsp_st->rtp_handle);
1107 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1108 }
1109
90abbdba
RB
1110 switch(reply->transports[0].lower_transport) {
1111 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1112 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1113 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1114 break;
115329f1 1115
c8965800
RB
1116 case RTSP_LOWER_TRANSPORT_UDP: {
1117 char url[1024];
1118
619298a8
JW
1119 /* Use source address if specified */
1120 if (reply->transports[0].source[0]) {
1121 ff_url_join(url, sizeof(url), "rtp", NULL,
1122 reply->transports[0].source,
1123 reply->transports[0].server_port_min, NULL);
1124 } else {
7bac991f
RB
1125 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1126 reply->transports[0].server_port_min, NULL);
619298a8 1127 }
c8965800
RB
1128 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1129 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1130 err = AVERROR_INVALIDDATA;
1131 goto fail;
1617ad97 1132 }
9c8fa20d
MS
1133 /* Try to initialize the connection state in a
1134 * potential NAT router by sending dummy packets.
1135 * RTP/RTCP dummy packets are used for RDT, too.
1136 */
44b70ce5
MS
1137 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1138 CONFIG_RTPDEC)
9c8fa20d 1139 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1140 break;
c8965800
RB
1141 }
1142 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1143 char url[1024], namebuf[50];
1144 struct sockaddr_storage addr;
c8965800
RB
1145 int port, ttl;
1146
7934b15d
MS
1147 if (reply->transports[0].destination.ss_family) {
1148 addr = reply->transports[0].destination;
c8965800
RB
1149 port = reply->transports[0].port_min;
1150 ttl = reply->transports[0].ttl;
1151 } else {
7934b15d 1152 addr = rtsp_st->sdp_ip;
c8965800
RB
1153 port = rtsp_st->sdp_port;
1154 ttl = rtsp_st->sdp_ttl;
1155 }
7934b15d
MS
1156 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1157 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1158 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1159 port, "?ttl=%d", ttl);
c8965800
RB
1160 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1161 err = AVERROR_INVALIDDATA;
1162 goto fail;
1617ad97
FB
1163 }
1164 break;
1165 }
c8965800 1166 }
d1ccf0e0 1167
ee0cb67f 1168 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1169 goto fail;
1617ad97
FB
1170 }
1171
30e79845
RB
1172 if (reply->timeout > 0)
1173 rt->timeout = reply->timeout;
1174
2e889ae4 1175 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1176 rt->need_subscription = 1;
1177
53620bba
RB
1178 return 0;
1179
1180fail:
c8965800 1181 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1182 if (rt->rtsp_streams[i]->rtp_handle) {
1183 url_close(rt->rtsp_streams[i]->rtp_handle);
1184 rt->rtsp_streams[i]->rtp_handle = NULL;
1185 }
1186 }
53620bba
RB
1187 return err;
1188}
1189
b8c2c41d
JA
1190void ff_rtsp_close_connections(AVFormatContext *s)
1191{
1192 RTSPState *rt = s->priv_data;
1193 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1194 url_close(rt->rtsp_hd);
6217b645 1195 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1196}
1197
3307e6ea 1198int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1199{
1200 RTSPState *rt = s->priv_data;
921da217
LB
1201 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1202 char *option_list, *option, *filename;
03f8fc08 1203 int port, err, tcp_fd;
354b7573 1204 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1205 int lower_transport_mask = 0;
1cf151e9 1206 char real_challenge[64];
03f8fc08
MS
1207 struct sockaddr_storage peer;
1208 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1209
1210 if (!ff_network_init())
1211 return AVERROR(EIO);
c8965800 1212redirect:
f5d33f52 1213 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1214 /* extract hostname and port */
f3bfe388 1215 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1216 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1217 if (*auth) {
aa8bf2fb 1218 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1219 }
53620bba
RB
1220 if (port < 0)
1221 port = RTSP_DEFAULT_PORT;
1222
1223 /* search for options */
602eb779 1224 option_list = strrchr(path, '?');
53620bba 1225 if (option_list) {
2a21adf9
MS
1226 /* Strip out the RTSP specific options, write out the rest of
1227 * the options back into the same string. */
1228 filename = option_list;
c8965800 1229 while (option_list) {
53620bba 1230 /* move the option pointer */
921da217 1231 option = ++option_list;
53620bba
RB
1232 option_list = strchr(option_list, '&');
1233 if (option_list)
921da217
LB
1234 *option_list = 0;
1235
53620bba 1236 /* handle the options */
c8965800 1237 if (!strcmp(option, "udp")) {
7a033e08 1238 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1239 } else if (!strcmp(option, "multicast")) {
7a033e08 1240 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1241 } else if (!strcmp(option, "tcp")) {
7a033e08 1242 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1243 } else if(!strcmp(option, "http")) {
1244 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1245 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1246 } else {
2a21adf9
MS
1247 /* Write options back into the buffer, using memmove instead
1248 * of strcpy since the strings may overlap. */
1249 int len = strlen(option);
1250 memmove(++filename, option, len);
1251 filename += len;
921da217
LB
1252 if (option_list) *filename = '&';
1253 }
53620bba 1254 }
921da217 1255 *filename = 0;
53620bba
RB
1256 }
1257
90abbdba 1258 if (!lower_transport_mask)
2a1d51c5 1259 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1260
3e24c770 1261 if (s->oformat) {
b7dc88fc
MS
1262 /* Only UDP or TCP - UDP multicast isn't supported. */
1263 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1264 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1265 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1266 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1267 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1268 err = AVERROR(EINVAL);
1269 goto fail;
1270 }
1271 }
1272
4bc5cc23
MS
1273 /* Construct the URI used in request; this is similar to s->filename,
1274 * but with authentication credentials removed and RTSP specific options
1275 * stripped out. */
1276 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1277 host, port, "%s", path);
1278
f5d33f52
JA
1279 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1280 /* set up initial handshake for tunneling */
1281 char httpname[1024];
1282 char sessioncookie[17];
1283 char headers[1024];
1284
10ed37b5 1285 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1286 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1287 av_get_random_seed(), av_get_random_seed());
1288
1289 /* GET requests */
9290f15d 1290 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1291 err = AVERROR(EIO);
1292 goto fail;
1293 }
1294
1295 /* generate GET headers */
1296 snprintf(headers, sizeof(headers),
1297 "x-sessioncookie: %s\r\n"
1298 "Accept: application/x-rtsp-tunnelled\r\n"
1299 "Pragma: no-cache\r\n"
1300 "Cache-Control: no-cache\r\n",
1301 sessioncookie);
00e4a1f4 1302 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1303
1304 /* complete the connection */
9290f15d 1305 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1306 err = AVERROR(EIO);
1307 goto fail;
1308 }
1309
1310 /* POST requests */
9290f15d 1311 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1312 err = AVERROR(EIO);
1313 goto fail;
1314 }
1315
1316 /* generate POST headers */
1317 snprintf(headers, sizeof(headers),
1318 "x-sessioncookie: %s\r\n"
1319 "Content-Type: application/x-rtsp-tunnelled\r\n"
1320 "Pragma: no-cache\r\n"
1321 "Cache-Control: no-cache\r\n"
1322 "Content-Length: 32767\r\n"
1323 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1324 sessioncookie);
00e4a1f4
JA
1325 ff_http_set_headers(rt->rtsp_hd_out, headers);
1326 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1327
a8ead332
MS
1328 /* Initialize the authentication state for the POST session. The HTTP
1329 * protocol implementation doesn't properly handle multi-pass
1330 * authentication for POST requests, since it would require one of
1331 * the following:
1332 * - implementing Expect: 100-continue, which many HTTP servers
1333 * don't support anyway, even less the RTSP servers that do HTTP
1334 * tunneling
1335 * - sending the whole POST data until getting a 401 reply specifying
1336 * what authentication method to use, then resending all that data
1337 * - waiting for potential 401 replies directly after sending the
1338 * POST header (waiting for some unspecified time)
1339 * Therefore, we copy the full auth state, which works for both basic
1340 * and digest. (For digest, we would have to synchronize the nonce
1341 * count variable between the two sessions, if we'd do more requests
1342 * with the original session, though.)
1343 */
1344 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1345
9290f15d
MS
1346 /* complete the connection */
1347 if (url_connect(rt->rtsp_hd_out)) {
1348 err = AVERROR(EIO);
1349 goto fail;
1350 }
f5d33f52 1351 } else {
48e77473 1352 /* open the tcp connection */
41874d0a 1353 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1354 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1355 err = AVERROR(EIO);
1356 goto fail;
1357 }
00e4a1f4 1358 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1359 }
53620bba
RB
1360 rt->seq = 0;
1361
00e4a1f4 1362 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1363 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1364 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1365 NULL, 0, NI_NUMERICHOST);
1366 }
1367
c8965800
RB
1368 /* request options supported by the server; this also detects server
1369 * type */
1cf151e9 1370 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1371 cmd[0] = 0;
2e889ae4 1372 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1373 av_strlcat(cmd,
1374 /**
1375 * The following entries are required for proper
1376 * streaming from a Realmedia server. They are
1377 * interdependent in some way although we currently
1378 * don't quite understand how. Values were copied
1379 * from mplayer SVN r23589.
1380 * @param CompanyID is a 16-byte ID in base64
1381 * @param ClientChallenge is a 16-byte ID in hex
1382 */
1383 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1384 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1385 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1386 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1387 sizeof(cmd));
b17d11c6 1388 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1389 if (reply->status_code != RTSP_STATUS_OK) {
1390 err = AVERROR_INVALIDDATA;
1391 goto fail;
1392 }
1393
1394 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1395 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1396 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1397 continue;
7a86bafa
RB
1398 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1399 rt->server_type = RTSP_SERVER_WMS;
c8965800 1400 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1401 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1402 break;
1403 }
1404
44b70ce5 1405 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1406 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1407 else if (CONFIG_RTSP_MUXER)
c2688f3a 1408 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1409 if (err)
53620bba 1410 goto fail;
53620bba 1411
8a8754d8 1412 do {
c8965800
RB
1413 int lower_transport = ff_log2_tab[lower_transport_mask &
1414 ~(lower_transport_mask - 1)];
8a8754d8 1415
90abbdba 1416 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1417 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1418 real_challenge : NULL);
8a8754d8 1419 if (err < 0)
7e6ca34f 1420 goto fail;
90abbdba
RB
1421 lower_transport_mask &= ~(1 << lower_transport);
1422 if (lower_transport_mask == 0 && err == 1) {
adef229e 1423 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1424 goto fail;
1425 }
1426 } while (err);
53620bba 1427
ff762d6e 1428 rt->state = RTSP_STATE_IDLE;
c8965800 1429 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1430 return 0;
1431 fail:
3307e6ea 1432 ff_rtsp_close_streams(s);
b8c2c41d 1433 ff_rtsp_close_connections(s);
35cfd646 1434 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1435 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1436 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1437 reply->status_code,
1438 s->filename);
1439 goto redirect;
1440 }
57b5555c 1441 ff_network_close();
1617ad97
FB
1442 return err;
1443}
2e802e38 1444#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1445
44b70ce5 1446#if CONFIG_RTPDEC
0e59034e 1447static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1448 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1449{
1450 RTSPState *rt = s->priv_data;
1451 RTSPStream *rtsp_st;
1452 fd_set rfds;
a1ba71aa 1453 int fd, fd_rtcp, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1454 struct timeval tv;
1455
c8965800 1456 for (;;) {
0e59034e
RB
1457 if (url_interrupt_cb())
1458 return AVERROR(EINTR);
321259c1
MS
1459 if (wait_end && wait_end - av_gettime() < 0)
1460 return AVERROR(EAGAIN);
0e59034e
RB
1461 FD_ZERO(&rfds);
1462 if (rt->rtsp_hd) {
1463 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1464 FD_SET(tcp_fd, &rfds);
1465 } else {
1466 fd_max = 0;
1467 tcp_fd = -1;
1468 }
c8965800 1469 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1470 rtsp_st = rt->rtsp_streams[i];
1471 if (rtsp_st->rtp_handle) {
0e59034e 1472 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1473 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1474 if (FFMAX(fd, fd_rtcp) > fd_max)
1475 fd_max = FFMAX(fd, fd_rtcp);
0e59034e 1476 FD_SET(fd, &rfds);
a1ba71aa 1477 FD_SET(fd_rtcp, &rfds);
0e59034e
RB
1478 }
1479 }
1480 tv.tv_sec = 0;
9cba6f5f 1481 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1482 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1483 if (n > 0) {
9cba6f5f 1484 timeout_cnt = 0;
c8965800 1485 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1486 rtsp_st = rt->rtsp_streams[i];
1487 if (rtsp_st->rtp_handle) {
1488 fd = url_get_file_handle(rtsp_st->rtp_handle);
a1ba71aa
JA
1489 fd_rtcp = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1490 if (FD_ISSET(fd_rtcp, &rfds) || FD_ISSET(fd, &rfds)) {
0e59034e
RB
1491 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1492 if (ret > 0) {
1493 *prtsp_st = rtsp_st;
1494 return ret;
1495 }
1496 }
1497 }
1498 }
5fe8021a 1499#if CONFIG_RTSP_DEMUXER
27000636 1500 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1501 RTSPMessageHeader reply;
1502
3032276b
MS
1503 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1504 if (ret < 0)
1505 return ret;
0e59034e 1506 /* XXX: parse message */
c02fd3d2 1507 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1508 return 0;
1509 }
5fe8021a 1510#endif
9cba6f5f 1511 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1512 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1513 } else if (n < 0 && errno != EINTR)
1514 return AVERROR(errno);
0e59034e
RB
1515 }
1516}
1517
0526c6f7 1518int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1519{
1520 RTSPState *rt = s->priv_data;
1521 int ret, len;
321259c1
MS
1522 RTSPStream *rtsp_st, *first_queue_st = NULL;
1523 int64_t wait_end = 0;
0e59034e 1524
b20359f5
JA
1525 if (rt->nb_byes == rt->nb_rtsp_streams)
1526 return AVERROR_EOF;
1527
0e59034e
RB
1528 /* get next frames from the same RTP packet */
1529 if (rt->cur_transport_priv) {
c8965800 1530 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1531 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1532 } else
0e59034e
RB
1533 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1534 if (ret == 0) {
1535 rt->cur_transport_priv = NULL;
1536 return 0;
1537 } else if (ret == 1) {
1538 return 0;
c8965800 1539 } else
0e59034e 1540 rt->cur_transport_priv = NULL;
0e59034e
RB
1541 }
1542
321259c1
MS
1543 if (rt->transport == RTSP_TRANSPORT_RTP) {
1544 int i;
1545 int64_t first_queue_time = 0;
1546 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1547 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
1548 int64_t queue_time = ff_rtp_queued_packet_time(rtpctx);
1549 if (queue_time && (queue_time - first_queue_time < 0 ||
1550 !first_queue_time)) {
1551 first_queue_time = queue_time;
1552 first_queue_st = rt->rtsp_streams[i];
1553 }
1554 }
1555 if (first_queue_time)
1556 wait_end = first_queue_time + s->max_delay;
1557 }
1558
0e59034e
RB
1559 /* read next RTP packet */
1560 redo:
96a7c975
MS
1561 if (!rt->recvbuf) {
1562 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1563 if (!rt->recvbuf)
1564 return AVERROR(ENOMEM);
1565 }
1566
0e59034e
RB
1567 switch(rt->lower_transport) {
1568 default:
5fe8021a 1569#if CONFIG_RTSP_DEMUXER
0e59034e 1570 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1571 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1572 break;
5fe8021a 1573#endif
0e59034e
RB
1574 case RTSP_LOWER_TRANSPORT_UDP:
1575 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1576 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
0e59034e
RB
1577 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1578 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1579 break;
1580 }
321259c1
MS
1581 if (len == AVERROR(EAGAIN) && first_queue_st &&
1582 rt->transport == RTSP_TRANSPORT_RTP) {
1583 rtsp_st = first_queue_st;
1584 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1585 goto end;
1586 }
0e59034e
RB
1587 if (len < 0)
1588 return len;
1589 if (len == 0)
1590 return AVERROR_EOF;
c8965800 1591 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1592 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1593 } else {
ad4ad27f 1594 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1595 if (ret < 0) {
1596 /* Either bad packet, or a RTCP packet. Check if the
1597 * first_rtcp_ntp_time field was initialized. */
1598 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1599 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1600 /* first_rtcp_ntp_time has been initialized for this stream,
1601 * copy the same value to all other uninitialized streams,
1602 * in order to map their timestamp origin to the same ntp time
1603 * as this one. */
1604 int i;
1605 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1606 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
2cab6b48
MS
1607 if (rtpctx2 &&
1608 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE)
1609 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
1610 }
1611 }
b20359f5
JA
1612 if (ret == -RTCP_BYE) {
1613 rt->nb_byes++;
1614
1615 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1616 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1617
1618 if (rt->nb_byes == rt->nb_rtsp_streams)
1619 return AVERROR_EOF;
1620 }
2cab6b48
MS
1621 }
1622 }
321259c1 1623end:
0e59034e
RB
1624 if (ret < 0)
1625 goto redo;
c8965800 1626 if (ret == 1)
0e59034e
RB
1627 /* more packets may follow, so we save the RTP context */
1628 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1629
1630 return ret;
1631}
44b70ce5 1632#endif /* CONFIG_RTPDEC */
0e59034e 1633
44b70ce5 1634#if CONFIG_SDP_DEMUXER
cb1fdc61 1635static int sdp_probe(AVProbeData *p1)
93ced3e8 1636{
0e1ceacd 1637 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1638
3fbd12d1 1639 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1640 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1641 if (p + sizeof("c=IN IP") - 1 < p_end &&
1642 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1643 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1644
c8965800 1645 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1646 if (++p >= p_end)
cb1fdc61 1647 break;
cb1fdc61
FB
1648 if (*p == '\r')
1649 p++;
1650 }
93ced3e8
FB
1651 return 0;
1652}
1653
c8965800 1654static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1655{
8b1ab7bf 1656 RTSPState *rt = s->priv_data;
93ced3e8
FB
1657 RTSPStream *rtsp_st;
1658 int size, i, err;
1659 char *content;
1660 char url[1024];
1661
57b5555c
MS
1662 if (!ff_network_init())
1663 return AVERROR(EIO);
1664
93ced3e8
FB
1665 /* read the whole sdp file */
1666 /* XXX: better loading */
1667 content = av_malloc(SDP_MAX_SIZE);
899681cd 1668 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1669 if (size <= 0) {
1670 av_free(content);
1671 return AVERROR_INVALIDDATA;
1672 }
1673 content[size] ='\0';
1674
0526c6f7 1675 ff_sdp_parse(s, content);
93ced3e8
FB
1676 av_free(content);
1677
1678 /* open each RTP stream */
c8965800 1679 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1680 char namebuf[50];
8b1ab7bf 1681 rtsp_st = rt->rtsp_streams[i];
115329f1 1682
3fbd12d1
MS
1683 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1684 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1685 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1686 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1687 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1688 rtsp_st->sdp_ttl);
dbf30963 1689 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1690 err = AVERROR_INVALIDDATA;
1691 goto fail;
1692 }
ee0cb67f 1693 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1694 goto fail;
93ced3e8
FB
1695 }
1696 return 0;
c8965800 1697fail:
3307e6ea 1698 ff_rtsp_close_streams(s);
57b5555c 1699 ff_network_close();
93ced3e8
FB
1700 return err;
1701}
1702
93ced3e8
FB
1703static int sdp_read_close(AVFormatContext *s)
1704{
3307e6ea 1705 ff_rtsp_close_streams(s);
57b5555c 1706 ff_network_close();
93ced3e8
FB
1707 return 0;
1708}
1709
ff70e601 1710AVInputFormat sdp_demuxer = {
93ced3e8 1711 "sdp",
bde15e74 1712 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1713 sizeof(RTSPState),
1714 sdp_probe,
1715 sdp_read_header,
0526c6f7 1716 ff_rtsp_fetch_packet,
93ced3e8
FB
1717 sdp_read_close,
1718};
44b70ce5 1719#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1720
44b70ce5 1721#if CONFIG_RTP_DEMUXER
44594cc7
MS
1722static int rtp_probe(AVProbeData *p)
1723{
1724 if (av_strstart(p->filename, "rtp:", NULL))
1725 return AVPROBE_SCORE_MAX;
1726 return 0;
1727}
1728
1729static int rtp_read_header(AVFormatContext *s,
1730 AVFormatParameters *ap)
1731{
1732 uint8_t recvbuf[1500];
1733 char host[500], sdp[500];
1734 int ret, port;
1735 URLContext* in = NULL;
1736 int payload_type;
1737 AVCodecContext codec;
1738 struct sockaddr_storage addr;
1739 ByteIOContext pb;
1740 socklen_t addrlen = sizeof(addr);
1741
1742 if (!ff_network_init())
1743 return AVERROR(EIO);
1744
1745 ret = url_open(&in, s->filename, URL_RDONLY);
1746 if (ret)
1747 goto fail;
1748
1749 while (1) {
1750 ret = url_read(in, recvbuf, sizeof(recvbuf));
1751 if (ret == AVERROR(EAGAIN))
1752 continue;
1753 if (ret < 0)
1754 goto fail;
1755 if (ret < 12) {
1756 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1757 continue;
1758 }
1759
1760 if ((recvbuf[0] & 0xc0) != 0x80) {
1761 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1762 "received\n");
1763 continue;
1764 }
1765
1766 payload_type = recvbuf[1] & 0x7f;
1767 break;
1768 }
1769 getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
1770 url_close(in);
1771 in = NULL;
1772
1773 memset(&codec, 0, sizeof(codec));
1774 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1775 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1776 "without an SDP file describing it\n",
1777 payload_type);
1778 goto fail;
1779 }
1780 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1781 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1782 "properly you need an SDP file "
1783 "describing it\n");
1784 }
1785
1786 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1787 NULL, 0, s->filename);
1788
1789 snprintf(sdp, sizeof(sdp),
1790 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1791 addr.ss_family == AF_INET ? 4 : 6, host,
1792 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1793 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1794 port, payload_type);
1795 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1796
1797 init_put_byte(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
1798 s->pb = &pb;
1799
1800 /* sdp_read_header initializes this again */
1801 ff_network_close();
1802
1803 ret = sdp_read_header(s, ap);
1804 s->pb = NULL;
1805 return ret;
1806
1807fail:
1808 if (in)
1809 url_close(in);
1810 ff_network_close();
1811 return ret;
1812}
1813
1814AVInputFormat rtp_demuxer = {
1815 "rtp",
1816 NULL_IF_CONFIG_SMALL("RTP input format"),
1817 sizeof(RTSPState),
1818 rtp_probe,
1819 rtp_read_header,
0526c6f7 1820 ff_rtsp_fetch_packet,
44594cc7
MS
1821 sdp_read_close,
1822 .flags = AVFMT_NOFILE,
1823};
44b70ce5 1824#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1825