rtpdec: Move AAC depacketization code in rtpdec to a proper 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"
f65919af 41#include "rtpdec_asf.h"
4934884a 42
1617ad97 43//#define DEBUG
b6892136 44//#define DEBUG_RTP_TCP
1617ad97 45
c482500f 46#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 47int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 48#endif
85fb7b34 49
c2bfd816 50/* Timeout values for socket select, in ms,
9cba6f5f
SG
51 * and read_packet(), in seconds */
52#define SELECT_TIMEOUT_MS 100
53#define READ_PACKET_TIMEOUT_S 10
54#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / SELECT_TIMEOUT_MS
55
1ef36a70
RB
56static void get_word_until_chars(char *buf, int buf_size,
57 const char *sep, const char **pp)
1617ad97
FB
58{
59 const char *p;
60 char *q;
61
62 p = *pp;
30619e6e 63 p += strspn(p, SPACE_CHARS);
1617ad97
FB
64 q = buf;
65 while (!strchr(sep, *p) && *p != '\0') {
66 if ((q - buf) < buf_size - 1)
67 *q++ = *p;
68 p++;
69 }
70 if (buf_size > 0)
71 *q = '\0';
72 *pp = p;
73}
74
1ef36a70
RB
75static void get_word_sep(char *buf, int buf_size, const char *sep,
76 const char **pp)
1617ad97 77{
1ef36a70
RB
78 if (**pp == '/') (*pp)++;
79 get_word_until_chars(buf, buf_size, sep, pp);
80}
1617ad97 81
1ef36a70
RB
82static void get_word(char *buf, int buf_size, const char **pp)
83{
84 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
85}
86
c8965800 87/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3
RB
88static int sdp_parse_rtpmap(AVFormatContext *s,
89 AVCodecContext *codec, RTSPStream *rtsp_st,
c8965800 90 int payload_type, const char *p)
93ced3e8
FB
91{
92 char buf[256];
d1ccf0e0
RD
93 int i;
94 AVCodec *c;
7b49ce2e 95 const char *c_name;
93ced3e8 96
d1ccf0e0 97 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
98 * see if we can handle this kind of payload.
99 * The space should normally not be there but some Real streams or
100 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
101 * have a trailing space. */
102 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 103 if (payload_type >= RTP_PT_PRIVATE) {
c8965800
RB
104 RTPDynamicProtocolHandler *handler;
105 for (handler = RTPFirstDynamicPayloadHandler;
106 handler; handler = handler->next) {
107 if (!strcasecmp(buf, handler->enc_name) &&
108 codec->codec_type == handler->codec_type) {
109 codec->codec_id = handler->codec_id;
110 rtsp_st->dynamic_handler = handler;
111 if (handler->open)
112 rtsp_st->dynamic_protocol_context = handler->open();
d1ccf0e0
RD
113 break;
114 }
4934884a 115 }
93ced3e8 116 } else {
c8965800
RB
117 /* We are in a standard case
118 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 119 /* search into AVRtpPayloadTypes[] */
7ed19d7f 120 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
121 }
122
123 c = avcodec_find_decoder(codec->codec_id);
124 if (c && c->name)
7b49ce2e 125 c_name = c->name;
d1ccf0e0 126 else
170870b7 127 c_name = "(null)";
d1ccf0e0 128
7515ed0c
RB
129 get_word_sep(buf, sizeof(buf), "/", &p);
130 i = atoi(buf);
131 switch (codec->codec_type) {
72415b2a 132 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
133 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
134 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
135 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
136 if (i > 0) {
137 codec->sample_rate = i;
138 get_word_sep(buf, sizeof(buf), "/", &p);
139 i = atoi(buf);
140 if (i > 0)
141 codec->channels = i;
142 // TODO: there is a bug here; if it is a mono stream, and
143 // less than 22000Hz, faad upconverts to stereo and twice
144 // the frequency. No problem, but the sample rate is being
145 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 146 }
7515ed0c
RB
147 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
148 codec->sample_rate);
149 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
150 codec->channels);
151 break;
72415b2a 152 case AVMEDIA_TYPE_VIDEO:
7515ed0c
RB
153 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
154 break;
155 default:
156 break;
157 }
158 return 0;
93ced3e8
FB
159}
160
c2bfd816 161/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
162 * is broken out as a function because it is used in rtp_h264.c, which is
163 * forthcoming. */
3307e6ea 164int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 165 char *value, int value_size)
d0deedcb 166{
30619e6e 167 *p += strspn(*p, SPACE_CHARS);
c8965800 168 if (**p) {
d0deedcb
RM
169 get_word_sep(attr, attr_size, "=", p);
170 if (**p == '=')
171 (*p)++;
172 get_word_sep(value, value_size, ";", p);
173 if (**p == ';')
174 (*p)++;
175 return 1;
176 }
177 return 0;
178}
179
debe86bf 180/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
31693e00
RM
181 * and end time.
182 * Used for seeking in the rtp stream.
183 */
184static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
185{
186 char buf[256];
187
30619e6e 188 p += strspn(p, SPACE_CHARS);
f7d78f36 189 if (!av_stristart(p, "npt=", &p))
31693e00
RM
190 return;
191
192 *start = AV_NOPTS_VALUE;
193 *end = AV_NOPTS_VALUE;
194
195 get_word_sep(buf, sizeof(buf), "-", &p);
196 *start = parse_date(buf, 1);
197 if (*p == '-') {
198 p++;
199 get_word_sep(buf, sizeof(buf), "-", &p);
200 *end = parse_date(buf, 1);
201 }
202// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
203// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
204}
205
93ced3e8
FB
206typedef struct SDPParseState {
207 /* SDP only */
208 struct in_addr default_ip;
c8965800
RB
209 int default_ttl;
210 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
211} SDPParseState;
212
213static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
214 int letter, const char *buf)
215{
8b1ab7bf 216 RTSPState *rt = s->priv_data;
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FB
217 char buf1[64], st_type[64];
218 const char *p;
72415b2a 219 enum AVMediaType codec_type;
fb65d2ca 220 int payload_type, i;
1617ad97
FB
221 AVStream *st;
222 RTSPStream *rtsp_st;
93ced3e8
FB
223 struct in_addr sdp_ip;
224 int ttl;
225
67c9cd69 226 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
227
228 p = buf;
cb760a47
RB
229 if (s1->skip_media && letter != 'm')
230 return;
c8965800 231 switch (letter) {
93ced3e8
FB
232 case 'c':
233 get_word(buf1, sizeof(buf1), &p);
234 if (strcmp(buf1, "IN") != 0)
235 return;
236 get_word(buf1, sizeof(buf1), &p);
237 if (strcmp(buf1, "IP4") != 0)
238 return;
239 get_word_sep(buf1, sizeof(buf1), "/", &p);
ac11d562 240 if (ff_inet_aton(buf1, &sdp_ip) == 0)
93ced3e8
FB
241 return;
242 ttl = 16;
243 if (*p == '/') {
244 p++;
245 get_word_sep(buf1, sizeof(buf1), "/", &p);
246 ttl = atoi(buf1);
247 }
248 if (s->nb_streams == 0) {
249 s1->default_ip = sdp_ip;
250 s1->default_ttl = ttl;
251 } else {
252 st = s->streams[s->nb_streams - 1];
253 rtsp_st = st->priv_data;
254 rtsp_st->sdp_ip = sdp_ip;
255 rtsp_st->sdp_ttl = ttl;
256 }
257 break;
1617ad97 258 case 's':
2ef6c124 259 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
260 break;
261 case 'i':
262 if (s->nb_streams == 0) {
2ef6c124 263 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
264 break;
265 }
266 break;
267 case 'm':
268 /* new stream */
cb760a47 269 s1->skip_media = 0;
1617ad97
FB
270 get_word(st_type, sizeof(st_type), &p);
271 if (!strcmp(st_type, "audio")) {
72415b2a 272 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 273 } else if (!strcmp(st_type, "video")) {
72415b2a 274 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 275 } else if (!strcmp(st_type, "application")) {
72415b2a 276 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 277 } else {
cb760a47 278 s1->skip_media = 1;
1617ad97
FB
279 return;
280 }
1617ad97
FB
281 rtsp_st = av_mallocz(sizeof(RTSPStream));
282 if (!rtsp_st)
283 return;
8b1ab7bf
FB
284 rtsp_st->stream_index = -1;
285 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
286
287 rtsp_st->sdp_ip = s1->default_ip;
288 rtsp_st->sdp_ttl = s1->default_ttl;
289
93ced3e8
FB
290 get_word(buf1, sizeof(buf1), &p); /* port */
291 rtsp_st->sdp_port = atoi(buf1);
292
293 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 294
93ced3e8
FB
295 /* XXX: handle list of formats */
296 get_word(buf1, sizeof(buf1), &p); /* format list */
297 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 298
7ed19d7f 299 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
300 /* no corresponding stream */
301 } else {
302 st = av_new_stream(s, 0);
303 if (!st)
304 return;
305 st->priv_data = rtsp_st;
306 rtsp_st->stream_index = st->index;
01f4895c 307 st->codec->codec_type = codec_type;
d1ccf0e0 308 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 309 /* if standard payload type, we can find the codec right now */
bf6d9818 310 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
311 }
312 }
1617ad97 313 /* put a default control url */
00eb13e0 314 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 315 sizeof(rtsp_st->control_url));
1617ad97
FB
316 break;
317 case 'a':
00eb13e0
AS
318 if (av_strstart(p, "control:", &p)) {
319 if (s->nb_streams == 0) {
320 if (!strncmp(p, "rtsp://", 7))
321 av_strlcpy(rt->control_uri, p,
322 sizeof(rt->control_uri));
323 } else {
1617ad97
FB
324 char proto[32];
325 /* get the control url */
326 st = s->streams[s->nb_streams - 1];
327 rtsp_st = st->priv_data;
115329f1 328
1617ad97 329 /* XXX: may need to add full url resolution */
c5c6e67c 330 ff_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
f984dcf6 331 NULL, NULL, 0, p);
1617ad97
FB
332 if (proto[0] == '\0') {
333 /* relative control URL */
00eb13e0 334 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
c8965800
RB
335 av_strlcat(rtsp_st->control_url, "/",
336 sizeof(rtsp_st->control_url));
337 av_strlcat(rtsp_st->control_url, p,
338 sizeof(rtsp_st->control_url));
339 } else
340 av_strlcpy(rtsp_st->control_url, p,
341 sizeof(rtsp_st->control_url));
00eb13e0 342 }
83d14c85 343 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 344 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 345 get_word(buf1, sizeof(buf1), &p);
93ced3e8 346 payload_type = atoi(buf1);
83d14c85 347 st = s->streams[s->nb_streams - 1];
ff16f551 348 rtsp_st = st->priv_data;
8f3c87f3 349 sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p);
7fc8ac7f
JA
350 } else if (av_strstart(p, "fmtp:", &p) ||
351 av_strstart(p, "framesize:", &p)) {
93ced3e8 352 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
353 // let dynamic protocol handlers have a stab at the line.
354 get_word(buf1, sizeof(buf1), &p);
355 payload_type = atoi(buf1);
c8965800
RB
356 for (i = 0; i < s->nb_streams; i++) {
357 st = s->streams[i];
d0deedcb 358 rtsp_st = st->priv_data;
c8965800
RB
359 if (rtsp_st->sdp_payload_type == payload_type &&
360 rtsp_st->dynamic_handler &&
361 rtsp_st->dynamic_handler->parse_sdp_a_line)
362 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
363 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 364 }
c8965800 365 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
366 int64_t start, end;
367
368 // this is so that seeking on a streamed file can work.
369 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
370 s->start_time = start;
371 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
372 s->duration = (end == AV_NOPTS_VALUE) ?
373 AV_NOPTS_VALUE : end - start;
119b4668
RB
374 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
375 if (atoi(p) == 1)
376 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
377 } else {
378 if (rt->server_type == RTSP_SERVER_WMS)
379 ff_wms_parse_sdp_a_line(s, p);
380 if (s->nb_streams > 0) {
c4a3d032
RB
381 if (rt->server_type == RTSP_SERVER_REAL)
382 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
383
384 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
385 if (rtsp_st->dynamic_handler &&
386 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
387 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
388 s->nb_streams - 1,
c4a3d032 389 rtsp_st->dynamic_protocol_context, buf);
1a30d541 390 }
1617ad97
FB
391 }
392 break;
393 }
394}
395
5c91a675 396static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
397{
398 const char *p;
399 int letter;
9211bcdd
RB
400 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
401 * contain long SDP lines containing complete ASF Headers (several
402 * kB) or arrays of MDPR (RM stream descriptor) headers plus
403 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
404 * buffer is large.
405 *
afcea58c
JA
406 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
407 * in rtpdec_xiph.c. */
373afbaf 408 char buf[16384], *q;
93ced3e8 409 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 410
93ced3e8 411 memset(s1, 0, sizeof(SDPParseState));
1617ad97 412 p = content;
c8965800 413 for (;;) {
30619e6e 414 p += strspn(p, SPACE_CHARS);
1617ad97
FB
415 letter = *p;
416 if (letter == '\0')
417 break;
418 p++;
419 if (*p != '=')
420 goto next_line;
421 p++;
422 /* get the content */
423 q = buf;
b6892136 424 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
425 if ((q - buf) < sizeof(buf) - 1)
426 *q++ = *p;
427 p++;
428 }
429 *q = '\0';
93ced3e8 430 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
431 next_line:
432 while (*p != '\n' && *p != '\0')
433 p++;
434 if (*p == '\n')
435 p++;
436 }
437 return 0;
438}
439
1ced9da3 440/* close and free RTSP streams */
3307e6ea 441void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 442{
52aa4338 443 RTSPState *rt = s->priv_data;
1ced9da3
LA
444 int i;
445 RTSPStream *rtsp_st;
446
c8965800 447 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
448 rtsp_st = rt->rtsp_streams[i];
449 if (rtsp_st) {
450 if (rtsp_st->transport_priv) {
fd450a51
MS
451 if (s->oformat) {
452 AVFormatContext *rtpctx = rtsp_st->transport_priv;
453 av_write_trailer(rtpctx);
b7dc88fc
MS
454 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
455 uint8_t *ptr;
456 url_close_dyn_buf(rtpctx->pb, &ptr);
457 av_free(ptr);
458 } else {
685e76b5 459 url_fclose(rtpctx->pb);
b7dc88fc 460 }
f86f6656
MS
461 av_metadata_free(&rtpctx->streams[0]->metadata);
462 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
463 av_free(rtpctx->streams[0]);
464 av_free(rtpctx);
465 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
466 ff_rdt_parse_close(rtsp_st->transport_priv);
467 else
468 rtp_parse_close(rtsp_st->transport_priv);
469 }
470 if (rtsp_st->rtp_handle)
471 url_close(rtsp_st->rtp_handle);
472 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
473 rtsp_st->dynamic_handler->close(
474 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
475 }
476 }
477 av_free(rt->rtsp_streams);
478 if (rt->asf_ctx) {
479 av_close_input_stream (rt->asf_ctx);
480 rt->asf_ctx = NULL;
481 }
1ced9da3
LA
482}
483
5c7fd910
MS
484static void *rtsp_rtp_mux_open(AVFormatContext *s, AVStream *st,
485 URLContext *handle)
486{
c07c6f81 487 RTSPState *rt = s->priv_data;
fd450a51
MS
488 AVFormatContext *rtpctx;
489 int ret;
490 AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
491
492 if (!rtp_format)
493 return NULL;
494
495 /* Allocate an AVFormatContext for each output stream */
496 rtpctx = avformat_alloc_context();
497 if (!rtpctx)
498 return NULL;
499
500 rtpctx->oformat = rtp_format;
501 if (!av_new_stream(rtpctx, 0)) {
502 av_free(rtpctx);
503 return NULL;
504 }
505 /* Copy the max delay setting; the rtp muxer reads this. */
506 rtpctx->max_delay = s->max_delay;
507 /* Copy other stream parameters. */
508 rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
509
c07c6f81
MS
510 /* Set the synchronized start time. */
511 rtpctx->start_time_realtime = rt->start_time;
512
fd450a51
MS
513 /* Remove the local codec, link to the original codec
514 * context instead, to give the rtp muxer access to
515 * codec parameters. */
516 av_free(rtpctx->streams[0]->codec);
517 rtpctx->streams[0]->codec = st->codec;
518
b7dc88fc 519 if (handle) {
685e76b5 520 url_fdopen(&rtpctx->pb, handle);
b7dc88fc
MS
521 } else
522 url_open_dyn_packet_buf(&rtpctx->pb, RTSP_TCP_MAX_PACKET_SIZE);
fd450a51
MS
523 ret = av_write_header(rtpctx);
524
525 if (ret) {
b7dc88fc 526 if (handle) {
685e76b5 527 url_fclose(rtpctx->pb);
b7dc88fc
MS
528 } else {
529 uint8_t *ptr;
530 url_close_dyn_buf(rtpctx->pb, &ptr);
531 av_free(ptr);
532 }
fd450a51
MS
533 av_free(rtpctx->streams[0]);
534 av_free(rtpctx);
535 return NULL;
536 }
537
538 /* Copy the RTP AVStream timebase back to the original AVStream */
539 st->time_base = rtpctx->streams[0]->time_base;
540 return rtpctx;
541}
542
c8965800 543static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
544{
545 RTSPState *rt = s->priv_data;
546 AVStream *st = NULL;
547
548 /* open the RTP context */
549 if (rtsp_st->stream_index >= 0)
550 st = s->streams[rtsp_st->stream_index];
551 if (!st)
552 s->ctx_flags |= AVFMTCTX_NOHEADER;
553
fd450a51
MS
554 if (s->oformat) {
555 rtsp_st->transport_priv = rtsp_rtp_mux_open(s, st, rtsp_st->rtp_handle);
c2bfd816 556 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51
MS
557 rtsp_st->rtp_handle = NULL;
558 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
559 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
560 rtsp_st->dynamic_protocol_context,
561 rtsp_st->dynamic_handler);
562 else
563 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
564 rtsp_st->sdp_payload_type,
565 &rtsp_st->rtp_payload_data);
566
567 if (!rtsp_st->transport_priv) {
568 return AVERROR(ENOMEM);
569 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
c8965800 570 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
571 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
572 rtsp_st->dynamic_protocol_context,
573 rtsp_st->dynamic_handler);
574 }
575 }
576
577 return 0;
578}
579
6f5a3d0a 580#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1ced9da3
LA
581static int rtsp_probe(AVProbeData *p)
582{
583 if (av_strstart(p->filename, "rtsp:", NULL))
584 return AVPROBE_SCORE_MAX;
585 return 0;
586}
587
1617ad97
FB
588static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
589{
590 const char *p;
591 int v;
592
593 p = *pp;
30619e6e 594 p += strspn(p, SPACE_CHARS);
1617ad97
FB
595 v = strtol(p, (char **)&p, 10);
596 if (*p == '-') {
597 p++;
598 *min_ptr = v;
599 v = strtol(p, (char **)&p, 10);
600 *max_ptr = v;
601 } else {
602 *min_ptr = v;
603 *max_ptr = v;
604 }
605 *pp = p;
606}
607
608/* XXX: only one transport specification is parsed */
a9e534d5 609static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
610{
611 char transport_protocol[16];
612 char profile[16];
613 char lower_transport[16];
614 char parameter[16];
615 RTSPTransportField *th;
616 char buf[256];
115329f1 617
1617ad97 618 reply->nb_transports = 0;
115329f1 619
c8965800 620 for (;;) {
30619e6e 621 p += strspn(p, SPACE_CHARS);
1617ad97
FB
622 if (*p == '\0')
623 break;
624
625 th = &reply->transports[reply->nb_transports];
626
115329f1 627 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 628 "/", &p);
e1502118 629 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
630 get_word_sep(profile, sizeof(profile), "/;,", &p);
631 lower_transport[0] = '\0';
632 /* rtp/avp/<protocol> */
633 if (*p == '/') {
7ecc634e
LB
634 get_word_sep(lower_transport, sizeof(lower_transport),
635 ";,", &p);
119b4668
RB
636 }
637 th->transport = RTSP_TRANSPORT_RTP;
638 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
639 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 640 /* x-pn-tng/<protocol> */
e1502118
LB
641 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
642 profile[0] = '\0';
119b4668 643 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 644 }
b6892136 645 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 646 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 647 else
90abbdba 648 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 649
1617ad97
FB
650 if (*p == ';')
651 p++;
652 /* get each parameter */
653 while (*p != '\0' && *p != ',') {
654 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
655 if (!strcmp(parameter, "port")) {
656 if (*p == '=') {
657 p++;
658 rtsp_parse_range(&th->port_min, &th->port_max, &p);
659 }
660 } else if (!strcmp(parameter, "client_port")) {
661 if (*p == '=') {
662 p++;
115329f1 663 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
664 &th->client_port_max, &p);
665 }
666 } else if (!strcmp(parameter, "server_port")) {
667 if (*p == '=') {
668 p++;
115329f1 669 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
670 &th->server_port_max, &p);
671 }
672 } else if (!strcmp(parameter, "interleaved")) {
673 if (*p == '=') {
674 p++;
115329f1 675 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
676 &th->interleaved_max, &p);
677 }
678 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
679 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
680 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
681 } else if (!strcmp(parameter, "ttl")) {
682 if (*p == '=') {
683 p++;
684 th->ttl = strtol(p, (char **)&p, 10);
685 }
686 } else if (!strcmp(parameter, "destination")) {
687 struct in_addr ipaddr;
688
689 if (*p == '=') {
690 p++;
691 get_word_sep(buf, sizeof(buf), ";,", &p);
ac11d562 692 if (ff_inet_aton(buf, &ipaddr))
1617ad97
FB
693 th->destination = ntohl(ipaddr.s_addr);
694 }
695 }
696 while (*p != ';' && *p != '\0' && *p != ',')
697 p++;
698 if (*p == ';')
699 p++;
700 }
701 if (*p == ',')
702 p++;
703
704 reply->nb_transports++;
705 }
706}
707
2626308a
MS
708void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
709 HTTPAuthState *auth_state)
1617ad97
FB
710{
711 const char *p;
712
713 /* NOTE: we do case independent match for broken servers */
714 p = buf;
f7d78f36 715 if (av_stristart(p, "Session:", &p)) {
30e79845 716 int t;
1617ad97 717 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
718 if (av_stristart(p, ";timeout=", &p) &&
719 (t = strtol(p, NULL, 10)) > 0) {
720 reply->timeout = t;
721 }
f7d78f36 722 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 723 reply->content_length = strtol(p, NULL, 10);
f7d78f36 724 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 725 rtsp_parse_transport(reply, p);
f7d78f36 726 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 727 reply->seq = strtol(p, NULL, 10);
f7d78f36 728 } else if (av_stristart(p, "Range:", &p)) {
31693e00 729 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 730 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 731 p += strspn(p, SPACE_CHARS);
30aa6aed 732 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 733 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 734 p += strspn(p, SPACE_CHARS);
7a86bafa 735 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
736 } else if (av_stristart(p, "Notice:", &p) ||
737 av_stristart(p, "X-Notice:", &p)) {
738 reply->notice = strtol(p, NULL, 10);
d243ba30 739 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 740 p += strspn(p, SPACE_CHARS);
d243ba30 741 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a 742 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
30619e6e 743 p += strspn(p, SPACE_CHARS);
2626308a
MS
744 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
745 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
30619e6e 746 p += strspn(p, SPACE_CHARS);
2626308a 747 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
1617ad97
FB
748 }
749}
750
b7b8fc34 751/* skip a RTP/TCP interleaved packet */
ec55edba 752void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
753{
754 RTSPState *rt = s->priv_data;
755 int ret, len, len1;
756 uint8_t buf[1024];
757
0e848977 758 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
759 if (ret != 3)
760 return;
80fb8234 761 len = AV_RB16(buf + 1);
67c9cd69
BC
762
763 dprintf(s, "skipping RTP packet len=%d\n", len);
764
b7b8fc34
FB
765 /* skip payload */
766 while (len > 0) {
767 len1 = len;
768 if (len1 > sizeof(buf))
769 len1 = sizeof(buf);
0e848977 770 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
771 if (ret != len1)
772 return;
773 len -= len1;
774 }
775}
1617ad97 776
3307e6ea 777int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
778 unsigned char **content_ptr,
779 int return_on_interleaved_data)
1617ad97
FB
780{
781 RTSPState *rt = s->priv_data;
782 char buf[4096], buf1[1024], *q;
783 unsigned char ch;
784 const char *p;
7e726132 785 int ret, content_length, line_count = 0;
1617ad97
FB
786 unsigned char *content = NULL;
787
d541a7d2 788 memset(reply, 0, sizeof(*reply));
1617ad97 789
1617ad97 790 /* parse reply (XXX: use buffers) */
1617ad97 791 rt->last_reply[0] = '\0';
c8965800 792 for (;;) {
1617ad97 793 q = buf;
c8965800 794 for (;;) {
0e848977 795 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 796#ifdef DEBUG_RTP_TCP
67c9cd69 797 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
798#endif
799 if (ret != 1)
800 return -1;
1617ad97
FB
801 if (ch == '\n')
802 break;
b7b8fc34
FB
803 if (ch == '$') {
804 /* XXX: only parse it if first char on line ? */
7e726132
RB
805 if (return_on_interleaved_data) {
806 return 1;
807 } else
ec55edba 808 ff_rtsp_skip_packet(s);
b7b8fc34 809 } else if (ch != '\r') {
1617ad97
FB
810 if ((q - buf) < sizeof(buf) - 1)
811 *q++ = ch;
812 }
813 }
814 *q = '\0';
67c9cd69
BC
815
816 dprintf(s, "line='%s'\n", buf);
817
1617ad97
FB
818 /* test if last line */
819 if (buf[0] == '\0')
820 break;
821 p = buf;
822 if (line_count == 0) {
823 /* get reply code */
824 get_word(buf1, sizeof(buf1), &p);
825 get_word(buf1, sizeof(buf1), &p);
826 reply->status_code = atoi(buf1);
827 } else {
2626308a 828 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
829 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
830 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
831 }
832 line_count++;
833 }
115329f1 834
1617ad97 835 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 836 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 837
1617ad97
FB
838 content_length = reply->content_length;
839 if (content_length > 0) {
840 /* leave some room for a trailing '\0' (useful for simple parsing) */
841 content = av_malloc(content_length + 1);
0e848977 842 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
843 content[content_length] = '\0';
844 }
845 if (content_ptr)
846 *content_ptr = content;
e2e2e7dd
AB
847 else
848 av_free(content);
7e726132 849
7ed8211b
LB
850 if (rt->seq != reply->seq) {
851 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
852 rt->seq, reply->seq);
853 }
854
fccb1770
RB
855 /* EOS */
856 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
857 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 858 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 859 rt->state = RTSP_STATE_IDLE;
c8965800 860 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 861 return AVERROR(EIO); /* data or server error */
c8965800 862 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
863 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
864 return AVERROR(EPERM);
865
7e726132 866 return 0;
1617ad97
FB
867}
868
d0382374 869int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
870 const char *method, const char *url,
871 const char *headers,
872 const unsigned char *send_content,
873 int send_content_length)
29b9f58b
RB
874{
875 RTSPState *rt = s->priv_data;
f5d33f52
JA
876 char buf[4096], *out_buf;
877 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 878
f5d33f52
JA
879 /* Add in RTSP headers */
880 out_buf = buf;
29b9f58b 881 rt->seq++;
b17d11c6
MS
882 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
883 if (headers)
884 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 885 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
886 if (rt->session_id[0] != '\0' && (!headers ||
887 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 888 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 889 }
aa8bf2fb
MS
890 if (rt->auth[0]) {
891 char *str = ff_http_auth_create_response(&rt->auth_state,
892 rt->auth, url, method);
893 if (str)
894 av_strlcat(buf, str, sizeof(buf));
895 av_free(str);
896 }
dfd017bf
MS
897 if (send_content_length > 0 && send_content)
898 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 899 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 900
f5d33f52
JA
901 /* base64 encode rtsp if tunneling */
902 if (rt->control_transport == RTSP_MODE_TUNNEL) {
903 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
904 out_buf = base64buf;
905 }
906
67c9cd69
BC
907 dprintf(s, "Sending:\n%s--\n", buf);
908
f5d33f52
JA
909 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
910 if (send_content_length > 0 && send_content) {
911 if (rt->control_transport == RTSP_MODE_TUNNEL) {
912 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
913 "with content data not supported\n");
914 return AVERROR_PATCHWELCOME;
915 }
b8c2c41d 916 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 917 }
30e79845 918 rt->last_cmd_time = av_gettime();
d0382374
JA
919
920 return 0;
30e79845
RB
921}
922
d0382374 923int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 924 const char *url, const char *headers)
dfd017bf 925{
d0382374 926 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
927}
928
d0382374 929int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
930 const char *headers, RTSPMessageHeader *reply,
931 unsigned char **content_ptr)
30e79845 932{
d0382374 933 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 934 content_ptr, NULL, 0);
29b9f58b
RB
935}
936
d0382374 937int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
938 const char *method, const char *url,
939 const char *header,
940 RTSPMessageHeader *reply,
941 unsigned char **content_ptr,
942 const unsigned char *send_content,
943 int send_content_length)
dfd017bf 944{
30af0779
MS
945 RTSPState *rt = s->priv_data;
946 HTTPAuthType cur_auth_type;
d0382374 947 int ret;
30af0779
MS
948
949retry:
950 cur_auth_type = rt->auth_state.auth_type;
d0382374 951 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
952 send_content,
953 send_content_length)))
d0382374 954 return ret;
dfd017bf 955
d0382374
JA
956 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
957 return ret;
30af0779
MS
958
959 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
960 rt->auth_state.auth_type != HTTP_AUTH_NONE)
961 goto retry;
d0382374
JA
962
963 return 0;
dfd017bf
MS
964}
965
53620bba 966/**
32e543f8 967 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 968 */
c8965800
RB
969static int make_setup_request(AVFormatContext *s, const char *host, int port,
970 int lower_transport, const char *real_challenge)
1617ad97
FB
971{
972 RTSPState *rt = s->priv_data;
f830c9a4 973 int rtx, j, i, err, interleave = 0;
1617ad97 974 RTSPStream *rtsp_st;
a9e534d5 975 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 976 char cmd[2048];
e9dea59f
RB
977 const char *trans_pref;
978
119b4668 979 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
980 trans_pref = "x-pn-tng";
981 else
982 trans_pref = "RTP/AVP";
115329f1 983
30e79845
RB
984 /* default timeout: 1 minute */
985 rt->timeout = 60;
986
1617ad97
FB
987 /* for each stream, make the setup request */
988 /* XXX: we assume the same server is used for the control of each
c8965800 989 * RTSP stream */
d1ccf0e0 990
c8965800 991 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
992 char transport[2048];
993
f830c9a4
RB
994 /**
995 * WMS serves all UDP data over a single connection, the RTX, which
996 * isn't necessarily the first in the SDP but has to be the first
997 * to be set up, else the second/third SETUP will fail with a 461.
998 */
999 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1000 rt->server_type == RTSP_SERVER_WMS) {
1001 if (i == 0) {
1002 /* rtx first */
1003 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1004 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1005 if (len >= 4 &&
c8965800
RB
1006 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1007 "/rtx"))
f830c9a4
RB
1008 break;
1009 }
1010 if (rtx == rt->nb_rtsp_streams)
1011 return -1; /* no RTX found */
1012 rtsp_st = rt->rtsp_streams[rtx];
1013 } else
1014 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1015 } else
2fea9650 1016 rtsp_st = rt->rtsp_streams[i];
1617ad97 1017
1617ad97 1018 /* RTP/UDP */
90abbdba 1019 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1020 char buf[256];
85fb7b34 1021
f830c9a4
RB
1022 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1023 port = reply->transports[0].client_port_min;
1024 goto have_port;
1025 }
1026
85fb7b34 1027 /* first try in specified port range */
d1ccf0e0 1028 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1029 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1030 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1031 "?localport=%d", j);
c8965800
RB
1032 /* we will use two ports per rtp stream (rtp and rtcp) */
1033 j += 2;
1034 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1035 goto rtp_opened;
1036 }
1617ad97 1037 }
85fb7b34 1038
c8965800
RB
1039#if 0
1040 /* then try on any port */
1041 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1042 err = AVERROR_INVALIDDATA;
1043 goto fail;
1044 }
1045#endif
85fb7b34
FB
1046
1047 rtp_opened:
8b1ab7bf 1048 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1049 have_port:
0ad306bc 1050 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1051 "%s/UDP;", trans_pref);
1052 if (rt->server_type != RTSP_SERVER_REAL)
1053 av_strlcat(transport, "unicast;", sizeof(transport));
1054 av_strlcatf(transport, sizeof(transport),
1055 "client_port=%d", port);
f830c9a4
RB
1056 if (rt->transport == RTSP_TRANSPORT_RTP &&
1057 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1058 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1059 }
1060
1061 /* RTP/TCP */
90abbdba 1062 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1063 /** For WMS streams, the application streams are only used for
1064 * UDP. When trying to set it up for TCP streams, the server
1065 * will return an error. Therefore, we skip those streams. */
1066 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1067 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1068 AVMEDIA_TYPE_DATA)
090438cc 1069 continue;
0ad306bc 1070 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1071 "%s/TCP;", trans_pref);
1072 if (rt->server_type == RTSP_SERVER_WMS)
1073 av_strlcat(transport, "unicast;", sizeof(transport));
1074 av_strlcatf(transport, sizeof(transport),
1075 "interleaved=%d-%d",
1076 interleave, interleave + 1);
1077 interleave += 2;
1617ad97
FB
1078 }
1079
90abbdba 1080 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1081 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1082 "%s/UDP;multicast", trans_pref);
1617ad97 1083 }
69adcc4f
MS
1084 if (s->oformat) {
1085 av_strlcat(transport, ";mode=receive", sizeof(transport));
1086 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1087 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1088 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1089 snprintf(cmd, sizeof(cmd),
b6892136 1090 "Transport: %s\r\n",
b17d11c6 1091 transport);
2e889ae4 1092 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1093 char real_res[41], real_csum[9];
1094 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1095 real_challenge);
1096 av_strlcatf(cmd, sizeof(cmd),
1097 "If-Match: %s\r\n"
1098 "RealChallenge2: %s, sd=%s\r\n",
1099 rt->session_id, real_res, real_csum);
1100 }
b17d11c6 1101 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1102 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1103 err = 1;
1104 goto fail;
7e6ca34f
RB
1105 } else if (reply->status_code != RTSP_STATUS_OK ||
1106 reply->nb_transports != 1) {
1617ad97
FB
1107 err = AVERROR_INVALIDDATA;
1108 goto fail;
1109 }
1110
1111 /* XXX: same protocol for all streams is required */
1112 if (i > 0) {
119b4668
RB
1113 if (reply->transports[0].lower_transport != rt->lower_transport ||
1114 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1115 err = AVERROR_INVALIDDATA;
1116 goto fail;
1117 }
1118 } else {
90abbdba 1119 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1120 rt->transport = reply->transports[0].transport;
1617ad97
FB
1121 }
1122
1123 /* close RTP connection if not choosen */
90abbdba
RB
1124 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1125 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1126 url_close(rtsp_st->rtp_handle);
1127 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1128 }
1129
90abbdba
RB
1130 switch(reply->transports[0].lower_transport) {
1131 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1132 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1133 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1134 break;
115329f1 1135
c8965800
RB
1136 case RTSP_LOWER_TRANSPORT_UDP: {
1137 char url[1024];
1138
1139 /* XXX: also use address if specified */
57b5555c
MS
1140 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1141 reply->transports[0].server_port_min, NULL);
c8965800
RB
1142 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1143 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1144 err = AVERROR_INVALIDDATA;
1145 goto fail;
1617ad97 1146 }
9c8fa20d
MS
1147 /* Try to initialize the connection state in a
1148 * potential NAT router by sending dummy packets.
1149 * RTP/RTCP dummy packets are used for RDT, too.
1150 */
30ff7c5c 1151 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat)
9c8fa20d 1152 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1153 break;
c8965800
RB
1154 }
1155 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1156 char url[1024];
1157 struct in_addr in;
1158 int port, ttl;
1159
1160 if (reply->transports[0].destination) {
1161 in.s_addr = htonl(reply->transports[0].destination);
1162 port = reply->transports[0].port_min;
1163 ttl = reply->transports[0].ttl;
1164 } else {
1165 in = rtsp_st->sdp_ip;
1166 port = rtsp_st->sdp_port;
1167 ttl = rtsp_st->sdp_ttl;
1168 }
57b5555c
MS
1169 ff_url_join(url, sizeof(url), "rtp", NULL, inet_ntoa(in),
1170 port, "?ttl=%d", ttl);
c8965800
RB
1171 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1172 err = AVERROR_INVALIDDATA;
1173 goto fail;
1617ad97
FB
1174 }
1175 break;
1176 }
c8965800 1177 }
d1ccf0e0 1178
ee0cb67f 1179 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1180 goto fail;
1617ad97
FB
1181 }
1182
30e79845
RB
1183 if (reply->timeout > 0)
1184 rt->timeout = reply->timeout;
1185
2e889ae4 1186 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1187 rt->need_subscription = 1;
1188
53620bba
RB
1189 return 0;
1190
1191fail:
c8965800 1192 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1193 if (rt->rtsp_streams[i]->rtp_handle) {
1194 url_close(rt->rtsp_streams[i]->rtp_handle);
1195 rt->rtsp_streams[i]->rtp_handle = NULL;
1196 }
1197 }
53620bba
RB
1198 return err;
1199}
1200
1ced9da3
LA
1201static int rtsp_read_play(AVFormatContext *s)
1202{
1203 RTSPState *rt = s->priv_data;
1204 RTSPMessageHeader reply1, *reply = &reply1;
5948f822 1205 int i;
1ced9da3
LA
1206 char cmd[1024];
1207
1208 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
1209
1210 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1211 if (rt->state == RTSP_STATE_PAUSED) {
b17d11c6 1212 cmd[0] = 0;
1ced9da3
LA
1213 } else {
1214 snprintf(cmd, sizeof(cmd),
1ced9da3 1215 "Range: npt=%0.3f-\r\n",
1ced9da3
LA
1216 (double)rt->seek_timestamp / AV_TIME_BASE);
1217 }
b17d11c6 1218 ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
1ced9da3
LA
1219 if (reply->status_code != RTSP_STATUS_OK) {
1220 return -1;
1221 }
5948f822
MS
1222 if (reply->range_start != AV_NOPTS_VALUE &&
1223 rt->transport == RTSP_TRANSPORT_RTP) {
1224 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1225 RTSPStream *rtsp_st = rt->rtsp_streams[i];
1226 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1227 AVStream *st = NULL;
8d168a92
MS
1228 if (!rtpctx)
1229 continue;
5948f822
MS
1230 if (rtsp_st->stream_index >= 0)
1231 st = s->streams[rtsp_st->stream_index];
1232 rtpctx->last_rtcp_ntp_time = AV_NOPTS_VALUE;
1233 rtpctx->first_rtcp_ntp_time = AV_NOPTS_VALUE;
1234 if (st)
1235 rtpctx->range_start_offset = av_rescale_q(reply->range_start,
1236 AV_TIME_BASE_Q,
1237 st->time_base);
1238 }
1239 }
1ced9da3 1240 }
c02fd3d2 1241 rt->state = RTSP_STATE_STREAMING;
1ced9da3
LA
1242 return 0;
1243}
1244
6e69f6c4 1245static int rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
e23d195d
MS
1246{
1247 RTSPState *rt = s->priv_data;
e23d195d
MS
1248 char cmd[1024];
1249 unsigned char *content = NULL;
1250 int ret;
1251
1252 /* describe the stream */
1253 snprintf(cmd, sizeof(cmd),
b17d11c6 1254 "Accept: application/sdp\r\n");
e23d195d
MS
1255 if (rt->server_type == RTSP_SERVER_REAL) {
1256 /**
1257 * The Require: attribute is needed for proper streaming from
1258 * Realmedia servers.
1259 */
1260 av_strlcat(cmd,
1261 "Require: com.real.retain-entity-for-setup\r\n",
1262 sizeof(cmd));
1263 }
b17d11c6 1264 ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
e23d195d
MS
1265 if (!content)
1266 return AVERROR_INVALIDDATA;
1267 if (reply->status_code != RTSP_STATUS_OK) {
1268 av_freep(&content);
1269 return AVERROR_INVALIDDATA;
1270 }
1271
1272 /* now we got the SDP description, we parse it */
1273 ret = sdp_parse(s, (const char *)content);
1274 av_freep(&content);
1275 if (ret < 0)
1276 return AVERROR_INVALIDDATA;
1277
1278 return 0;
1279}
1280
26cb700c 1281static int rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
3e24c770
MS
1282{
1283 RTSPState *rt = s->priv_data;
1284 RTSPMessageHeader reply1, *reply = &reply1;
3e24c770
MS
1285 int i;
1286 char *sdp;
26cb700c 1287 AVFormatContext sdp_ctx, *ctx_array[1];
c07c6f81
MS
1288
1289 rt->start_time = av_gettime();
3e24c770
MS
1290
1291 /* Announce the stream */
3e24c770
MS
1292 sdp = av_mallocz(8192);
1293 if (sdp == NULL)
1294 return AVERROR(ENOMEM);
26cb700c
MS
1295 /* We create the SDP based on the RTSP AVFormatContext where we
1296 * aren't allowed to change the filename field. (We create the SDP
1297 * based on the RTSP context since the contexts for the RTP streams
1298 * don't exist yet.) In order to specify a custom URL with the actual
1299 * peer IP instead of the originally specified hostname, we create
1300 * a temporary copy of the AVFormatContext, where the custom URL is set.
1301 *
1302 * FIXME: Create the SDP without copying the AVFormatContext.
1303 * This either requires setting up the RTP stream AVFormatContexts
1304 * already here (complicating things immensely) or getting a more
1305 * flexible SDP creation interface.
1306 */
1307 sdp_ctx = *s;
1308 ff_url_join(sdp_ctx.filename, sizeof(sdp_ctx.filename),
1309 "rtsp", NULL, addr, -1, NULL);
1310 ctx_array[0] = &sdp_ctx;
1311 if (avf_sdp_create(ctx_array, 1, sdp, 8192)) {
3e24c770
MS
1312 av_free(sdp);
1313 return AVERROR_INVALIDDATA;
1314 }
1315 av_log(s, AV_LOG_INFO, "SDP:\n%s\n", sdp);
b17d11c6
MS
1316 ff_rtsp_send_cmd_with_content(s, "ANNOUNCE", rt->control_uri,
1317 "Content-Type: application/sdp\r\n",
1318 reply, NULL, sdp, strlen(sdp));
3e24c770
MS
1319 av_free(sdp);
1320 if (reply->status_code != RTSP_STATUS_OK)
1321 return AVERROR_INVALIDDATA;
1322
1323 /* Set up the RTSPStreams for each AVStream */
1324 for (i = 0; i < s->nb_streams; i++) {
1325 RTSPStream *rtsp_st;
1326 AVStream *st = s->streams[i];
1327
1328 rtsp_st = av_mallocz(sizeof(RTSPStream));
1329 if (!rtsp_st)
1330 return AVERROR(ENOMEM);
1331 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
1332
1333 st->priv_data = rtsp_st;
1334 rtsp_st->stream_index = i;
1335
db76ca7f 1336 av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));
3e24c770
MS
1337 /* Note, this must match the relative uri set in the sdp content */
1338 av_strlcatf(rtsp_st->control_url, sizeof(rtsp_st->control_url),
1339 "/streamid=%d", i);
1340 }
1341
1342 return 0;
1343}
1344
b8c2c41d
JA
1345void ff_rtsp_close_connections(AVFormatContext *s)
1346{
1347 RTSPState *rt = s->priv_data;
1348 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1349 url_close(rt->rtsp_hd);
6217b645 1350 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1351}
1352
3307e6ea 1353int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1354{
1355 RTSPState *rt = s->priv_data;
921da217
LB
1356 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1357 char *option_list, *option, *filename;
03f8fc08 1358 int port, err, tcp_fd;
3370289a 1359 RTSPMessageHeader reply1 = {}, *reply = &reply1;
90abbdba 1360 int lower_transport_mask = 0;
1cf151e9 1361 char real_challenge[64];
03f8fc08
MS
1362 struct sockaddr_storage peer;
1363 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1364
1365 if (!ff_network_init())
1366 return AVERROR(EIO);
c8965800 1367redirect:
f5d33f52 1368 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1369 /* extract hostname and port */
c5c6e67c 1370 ff_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1371 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1372 if (*auth) {
aa8bf2fb 1373 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1374 }
53620bba
RB
1375 if (port < 0)
1376 port = RTSP_DEFAULT_PORT;
1377
1378 /* search for options */
602eb779 1379 option_list = strrchr(path, '?');
53620bba 1380 if (option_list) {
2a21adf9
MS
1381 /* Strip out the RTSP specific options, write out the rest of
1382 * the options back into the same string. */
1383 filename = option_list;
c8965800 1384 while (option_list) {
53620bba 1385 /* move the option pointer */
921da217 1386 option = ++option_list;
53620bba
RB
1387 option_list = strchr(option_list, '&');
1388 if (option_list)
921da217
LB
1389 *option_list = 0;
1390
53620bba 1391 /* handle the options */
c8965800 1392 if (!strcmp(option, "udp")) {
7a033e08 1393 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1394 } else if (!strcmp(option, "multicast")) {
7a033e08 1395 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1396 } else if (!strcmp(option, "tcp")) {
7a033e08 1397 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1398 } else if(!strcmp(option, "http")) {
1399 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1400 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1401 } else {
2a21adf9
MS
1402 /* Write options back into the buffer, using memmove instead
1403 * of strcpy since the strings may overlap. */
1404 int len = strlen(option);
1405 memmove(++filename, option, len);
1406 filename += len;
921da217
LB
1407 if (option_list) *filename = '&';
1408 }
53620bba 1409 }
921da217 1410 *filename = 0;
53620bba
RB
1411 }
1412
90abbdba 1413 if (!lower_transport_mask)
2a1d51c5 1414 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1415
3e24c770 1416 if (s->oformat) {
b7dc88fc
MS
1417 /* Only UDP or TCP - UDP multicast isn't supported. */
1418 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1419 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1420 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1421 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1422 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1423 err = AVERROR(EINVAL);
1424 goto fail;
1425 }
1426 }
1427
4bc5cc23
MS
1428 /* Construct the URI used in request; this is similar to s->filename,
1429 * but with authentication credentials removed and RTSP specific options
1430 * stripped out. */
1431 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1432 host, port, "%s", path);
1433
f5d33f52
JA
1434 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1435 /* set up initial handshake for tunneling */
1436 char httpname[1024];
1437 char sessioncookie[17];
1438 char headers[1024];
1439
10ed37b5 1440 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1441 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1442 av_get_random_seed(), av_get_random_seed());
1443
1444 /* GET requests */
9290f15d 1445 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1446 err = AVERROR(EIO);
1447 goto fail;
1448 }
1449
1450 /* generate GET headers */
1451 snprintf(headers, sizeof(headers),
1452 "x-sessioncookie: %s\r\n"
1453 "Accept: application/x-rtsp-tunnelled\r\n"
1454 "Pragma: no-cache\r\n"
1455 "Cache-Control: no-cache\r\n",
1456 sessioncookie);
00e4a1f4 1457 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1458
1459 /* complete the connection */
9290f15d 1460 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1461 err = AVERROR(EIO);
1462 goto fail;
1463 }
1464
1465 /* POST requests */
9290f15d 1466 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1467 err = AVERROR(EIO);
1468 goto fail;
1469 }
1470
1471 /* generate POST headers */
1472 snprintf(headers, sizeof(headers),
1473 "x-sessioncookie: %s\r\n"
1474 "Content-Type: application/x-rtsp-tunnelled\r\n"
1475 "Pragma: no-cache\r\n"
1476 "Cache-Control: no-cache\r\n"
1477 "Content-Length: 32767\r\n"
1478 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1479 sessioncookie);
00e4a1f4
JA
1480 ff_http_set_headers(rt->rtsp_hd_out, headers);
1481 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1482
a8ead332
MS
1483 /* Initialize the authentication state for the POST session. The HTTP
1484 * protocol implementation doesn't properly handle multi-pass
1485 * authentication for POST requests, since it would require one of
1486 * the following:
1487 * - implementing Expect: 100-continue, which many HTTP servers
1488 * don't support anyway, even less the RTSP servers that do HTTP
1489 * tunneling
1490 * - sending the whole POST data until getting a 401 reply specifying
1491 * what authentication method to use, then resending all that data
1492 * - waiting for potential 401 replies directly after sending the
1493 * POST header (waiting for some unspecified time)
1494 * Therefore, we copy the full auth state, which works for both basic
1495 * and digest. (For digest, we would have to synchronize the nonce
1496 * count variable between the two sessions, if we'd do more requests
1497 * with the original session, though.)
1498 */
1499 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1500
9290f15d
MS
1501 /* complete the connection */
1502 if (url_connect(rt->rtsp_hd_out)) {
1503 err = AVERROR(EIO);
1504 goto fail;
1505 }
f5d33f52 1506 } else {
48e77473 1507 /* open the tcp connection */
41874d0a 1508 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1509 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1510 err = AVERROR(EIO);
1511 goto fail;
1512 }
00e4a1f4 1513 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1514 }
53620bba
RB
1515 rt->seq = 0;
1516
00e4a1f4 1517 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1518 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1519 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1520 NULL, 0, NI_NUMERICHOST);
1521 }
1522
c8965800
RB
1523 /* request options supported by the server; this also detects server
1524 * type */
1cf151e9 1525 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1526 cmd[0] = 0;
2e889ae4 1527 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1528 av_strlcat(cmd,
1529 /**
1530 * The following entries are required for proper
1531 * streaming from a Realmedia server. They are
1532 * interdependent in some way although we currently
1533 * don't quite understand how. Values were copied
1534 * from mplayer SVN r23589.
1535 * @param CompanyID is a 16-byte ID in base64
1536 * @param ClientChallenge is a 16-byte ID in hex
1537 */
1538 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1539 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1540 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1541 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1542 sizeof(cmd));
b17d11c6 1543 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1544 if (reply->status_code != RTSP_STATUS_OK) {
1545 err = AVERROR_INVALIDDATA;
1546 goto fail;
1547 }
1548
1549 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1550 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1551 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1552 continue;
7a86bafa
RB
1553 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1554 rt->server_type = RTSP_SERVER_WMS;
c8965800 1555 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1556 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1557 break;
1558 }
1559
3e24c770 1560 if (s->iformat)
6e69f6c4 1561 err = rtsp_setup_input_streams(s, reply);
3e24c770 1562 else
26cb700c 1563 err = rtsp_setup_output_streams(s, host);
e23d195d 1564 if (err)
53620bba 1565 goto fail;
53620bba 1566
8a8754d8 1567 do {
c8965800
RB
1568 int lower_transport = ff_log2_tab[lower_transport_mask &
1569 ~(lower_transport_mask - 1)];
8a8754d8 1570
90abbdba 1571 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1572 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1573 real_challenge : NULL);
8a8754d8 1574 if (err < 0)
7e6ca34f 1575 goto fail;
90abbdba
RB
1576 lower_transport_mask &= ~(1 << lower_transport);
1577 if (lower_transport_mask == 0 && err == 1) {
adef229e 1578 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1579 goto fail;
1580 }
1581 } while (err);
53620bba 1582
ff762d6e 1583 rt->state = RTSP_STATE_IDLE;
c8965800 1584 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1585 return 0;
1586 fail:
3307e6ea 1587 ff_rtsp_close_streams(s);
b8c2c41d 1588 ff_rtsp_close_connections(s);
35cfd646 1589 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1590 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1591 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1592 reply->status_code,
1593 s->filename);
1594 goto redirect;
1595 }
57b5555c 1596 ff_network_close();
1617ad97
FB
1597 return err;
1598}
6f5a3d0a 1599#endif
1617ad97 1600
6f5a3d0a 1601#if CONFIG_RTSP_DEMUXER
4280f9bb
MS
1602static int rtsp_read_header(AVFormatContext *s,
1603 AVFormatParameters *ap)
1604{
4280f9bb
MS
1605 int ret;
1606
3307e6ea 1607 ret = ff_rtsp_connect(s);
4280f9bb
MS
1608 if (ret)
1609 return ret;
1610
1611 if (ap->initial_pause) {
1612 /* do not start immediately */
1613 } else {
1614 if (rtsp_read_play(s) < 0) {
3307e6ea 1615 ff_rtsp_close_streams(s);
b8c2c41d 1616 ff_rtsp_close_connections(s);
4280f9bb
MS
1617 return AVERROR_INVALIDDATA;
1618 }
1619 }
1620
1621 return 0;
1622}
1623
0e59034e
RB
1624static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1625 uint8_t *buf, int buf_size)
1626{
1627 RTSPState *rt = s->priv_data;
1628 RTSPStream *rtsp_st;
1629 fd_set rfds;
9cba6f5f 1630 int fd, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1631 struct timeval tv;
1632
c8965800 1633 for (;;) {
0e59034e
RB
1634 if (url_interrupt_cb())
1635 return AVERROR(EINTR);
1636 FD_ZERO(&rfds);
1637 if (rt->rtsp_hd) {
1638 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1639 FD_SET(tcp_fd, &rfds);
1640 } else {
1641 fd_max = 0;
1642 tcp_fd = -1;
1643 }
c8965800 1644 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1645 rtsp_st = rt->rtsp_streams[i];
1646 if (rtsp_st->rtp_handle) {
1647 /* currently, we cannot probe RTCP handle because of
1648 * blocking restrictions */
1649 fd = url_get_file_handle(rtsp_st->rtp_handle);
1650 if (fd > fd_max)
1651 fd_max = fd;
1652 FD_SET(fd, &rfds);
1653 }
1654 }
1655 tv.tv_sec = 0;
9cba6f5f 1656 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1657 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1658 if (n > 0) {
9cba6f5f 1659 timeout_cnt = 0;
c8965800 1660 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1661 rtsp_st = rt->rtsp_streams[i];
1662 if (rtsp_st->rtp_handle) {
1663 fd = url_get_file_handle(rtsp_st->rtp_handle);
1664 if (FD_ISSET(fd, &rfds)) {
1665 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1666 if (ret > 0) {
1667 *prtsp_st = rtsp_st;
1668 return ret;
1669 }
1670 }
1671 }
1672 }
1673#if CONFIG_RTSP_DEMUXER
27000636 1674 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1675 RTSPMessageHeader reply;
1676
3032276b
MS
1677 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1678 if (ret < 0)
1679 return ret;
0e59034e 1680 /* XXX: parse message */
c02fd3d2 1681 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1682 return 0;
1683 }
1684#endif
9cba6f5f 1685 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1686 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1687 } else if (n < 0 && errno != EINTR)
1688 return AVERROR(errno);
0e59034e
RB
1689 }
1690}
1691
8b1ab7bf
FB
1692static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1693 uint8_t *buf, int buf_size)
1617ad97
FB
1694{
1695 RTSPState *rt = s->priv_data;
b6892136 1696 int id, len, i, ret;
1617ad97 1697 RTSPStream *rtsp_st;
1617ad97 1698
b6892136 1699#ifdef DEBUG_RTP_TCP
67c9cd69 1700 dprintf(s, "tcp_read_packet:\n");
b6892136 1701#endif
c8965800
RB
1702redo:
1703 for (;;) {
7e726132
RB
1704 RTSPMessageHeader reply;
1705
3307e6ea 1706 ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
7e726132 1707 if (ret == -1)
8b1ab7bf 1708 return -1;
7e726132 1709 if (ret == 1) /* received '$' */
1617ad97 1710 break;
7e726132 1711 /* XXX: parse message */
c02fd3d2 1712 if (rt->state != RTSP_STATE_STREAMING)
fccb1770 1713 return 0;
1617ad97 1714 }
0e848977 1715 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1716 if (ret != 3)
8b1ab7bf 1717 return -1;
c8965800 1718 id = buf[0];
80fb8234 1719 len = AV_RB16(buf + 1);
b6892136 1720#ifdef DEBUG_RTP_TCP
67c9cd69 1721 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1722#endif
8b1ab7bf 1723 if (len > buf_size || len < 12)
1617ad97
FB
1724 goto redo;
1725 /* get the data */
0e848977 1726 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1727 if (ret != len)
8b1ab7bf 1728 return -1;
985b05d3 1729 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1730 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1731 return -1;
115329f1 1732
1617ad97 1733 /* find the matching stream */
c8965800 1734 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1735 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1736 if (id >= rtsp_st->interleaved_min &&
1737 id <= rtsp_st->interleaved_max)
1617ad97
FB
1738 goto found;
1739 }
1740 goto redo;
c8965800 1741found:
8b1ab7bf
FB
1742 *prtsp_st = rtsp_st;
1743 return len;
1617ad97
FB
1744}
1745
0e59034e
RB
1746static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1747{
1748 RTSPState *rt = s->priv_data;
1749 int ret, len;
1750 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1751 RTSPStream *rtsp_st;
1752
1753 /* get next frames from the same RTP packet */
1754 if (rt->cur_transport_priv) {
c8965800 1755 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1756 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1757 } else
0e59034e
RB
1758 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1759 if (ret == 0) {
1760 rt->cur_transport_priv = NULL;
1761 return 0;
1762 } else if (ret == 1) {
1763 return 0;
c8965800 1764 } else
0e59034e 1765 rt->cur_transport_priv = NULL;
0e59034e
RB
1766 }
1767
1768 /* read next RTP packet */
1769 redo:
1770 switch(rt->lower_transport) {
1771 default:
1772#if CONFIG_RTSP_DEMUXER
1773 case RTSP_LOWER_TRANSPORT_TCP:
1774 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1775 break;
1776#endif
1777 case RTSP_LOWER_TRANSPORT_UDP:
1778 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1779 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1780 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1781 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1782 break;
1783 }
1784 if (len < 0)
1785 return len;
1786 if (len == 0)
1787 return AVERROR_EOF;
c8965800 1788 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1789 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48 1790 } else {
0e59034e 1791 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48
MS
1792 if (ret < 0) {
1793 /* Either bad packet, or a RTCP packet. Check if the
1794 * first_rtcp_ntp_time field was initialized. */
1795 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1796 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1797 /* first_rtcp_ntp_time has been initialized for this stream,
1798 * copy the same value to all other uninitialized streams,
1799 * in order to map their timestamp origin to the same ntp time
1800 * as this one. */
1801 int i;
1802 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1803 RTPDemuxContext *rtpctx2 = rtsp_st->transport_priv;
1804 if (rtpctx2 &&
1805 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE)
1806 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
1807 }
1808 }
1809 }
1810 }
0e59034e
RB
1811 if (ret < 0)
1812 goto redo;
c8965800 1813 if (ret == 1)
0e59034e
RB
1814 /* more packets may follow, so we save the RTP context */
1815 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1816
1817 return ret;
1818}
1819
c8965800 1820static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1821{
1822 RTSPState *rt = s->priv_data;
98713182 1823 int ret;
30e79845
RB
1824 RTSPMessageHeader reply1, *reply = &reply1;
1825 char cmd[1024];
8b1ab7bf 1826
572c6a38 1827 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1828 int i;
572c6a38 1829 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1830
572c6a38
RB
1831 for (i = 0; i < s->nb_streams; i++)
1832 cache[i] = s->streams[i]->discard;
1833
1834 if (!rt->need_subscription) {
1835 if (memcmp (cache, rt->real_setup_cache,
1836 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1837 snprintf(cmd, sizeof(cmd),
7eaa646f 1838 "Unsubscribe: %s\r\n",
b17d11c6
MS
1839 rt->last_subscription);
1840 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1841 cmd, reply, NULL);
572c6a38
RB
1842 if (reply->status_code != RTSP_STATUS_OK)
1843 return AVERROR_INVALIDDATA;
1844 rt->need_subscription = 1;
1845 }
1256d16b 1846 }
1256d16b 1847
572c6a38
RB
1848 if (rt->need_subscription) {
1849 int r, rule_nr, first = 1;
1850
1851 memcpy(rt->real_setup_cache, cache,
1852 sizeof(enum AVDiscard) * s->nb_streams);
1853 rt->last_subscription[0] = 0;
1854
1855 snprintf(cmd, sizeof(cmd),
b17d11c6 1856 "Subscribe: ");
572c6a38
RB
1857 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1858 rule_nr = 0;
1859 for (r = 0; r < s->nb_streams; r++) {
1860 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1861 if (s->streams[r]->discard != AVDISCARD_ALL) {
1862 if (!first)
1863 av_strlcat(rt->last_subscription, ",",
1864 sizeof(rt->last_subscription));
1865 ff_rdt_subscribe_rule(
1866 rt->last_subscription,
1867 sizeof(rt->last_subscription), i, rule_nr);
1868 first = 0;
1869 }
1870 rule_nr++;
1871 }
1872 }
1873 }
1874 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
b17d11c6
MS
1875 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1876 cmd, reply, NULL);
572c6a38
RB
1877 if (reply->status_code != RTSP_STATUS_OK)
1878 return AVERROR_INVALIDDATA;
1879 rt->need_subscription = 0;
1880
c02fd3d2 1881 if (rt->state == RTSP_STATE_STREAMING)
572c6a38
RB
1882 rtsp_read_play (s);
1883 }
1256d16b
RB
1884 }
1885
d7250724 1886 ret = rtsp_fetch_packet(s, pkt);
c8965800 1887 if (ret < 0)
98713182 1888 return ret;
30e79845
RB
1889
1890 /* send dummy request to keep TCP connection alive */
1891 if ((rt->server_type == RTSP_SERVER_WMS ||
1892 rt->server_type == RTSP_SERVER_REAL) &&
1893 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1894 if (rt->server_type == RTSP_SERVER_WMS) {
b17d11c6 1895 ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
30e79845 1896 } else {
b17d11c6 1897 ff_rtsp_send_cmd_async(s, "OPTIONS", "*", NULL);
30e79845
RB
1898 }
1899 }
1900
8b1ab7bf 1901 return 0;
1617ad97
FB
1902}
1903
ff762d6e
FB
1904/* pause the stream */
1905static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1906{
ff762d6e 1907 RTSPState *rt = s->priv_data;
a9e534d5 1908 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34 1909
c02fd3d2 1910 if (rt->state != RTSP_STATE_STREAMING)
ff762d6e 1911 return 0;
2e889ae4 1912 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
b17d11c6 1913 ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
99b2ac07
RB
1914 if (reply->status_code != RTSP_STATUS_OK) {
1915 return -1;
1916 }
1256d16b 1917 }
5f86057f
RB
1918 rt->state = RTSP_STATE_PAUSED;
1919 return 0;
b7b8fc34
FB
1920}
1921
115329f1 1922static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1923 int64_t timestamp, int flags)
ff762d6e
FB
1924{
1925 RTSPState *rt = s->priv_data;
115329f1 1926
c8965800
RB
1927 rt->seek_timestamp = av_rescale_q(timestamp,
1928 s->streams[stream_index]->time_base,
1929 AV_TIME_BASE_Q);
ff762d6e
FB
1930 switch(rt->state) {
1931 default:
1932 case RTSP_STATE_IDLE:
1933 break;
c02fd3d2 1934 case RTSP_STATE_STREAMING:
ec606b36
LB
1935 if (rtsp_read_pause(s) != 0)
1936 return -1;
1937 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1938 if (rtsp_read_play(s) != 0)
1939 return -1;
1940 break;
1941 case RTSP_STATE_PAUSED:
1942 rt->state = RTSP_STATE_IDLE;
1943 break;
1944 }
1945 return 0;
1946}
1947
1617ad97
FB
1948static int rtsp_read_close(AVFormatContext *s)
1949{
1950 RTSPState *rt = s->priv_data;
1617ad97 1951
b6892136 1952#if 0
1617ad97 1953 /* NOTE: it is valid to flush the buffer here */
90abbdba 1954 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1955 url_fclose(&rt->rtsp_gb);
1956 }
b6892136 1957#endif
b17d11c6 1958 ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
1617ad97 1959
3307e6ea 1960 ff_rtsp_close_streams(s);
b8c2c41d 1961 ff_rtsp_close_connections(s);
57b5555c 1962 ff_network_close();
1617ad97
FB
1963 return 0;
1964}
1965
d2a067d1 1966AVInputFormat rtsp_demuxer = {
1617ad97 1967 "rtsp",
bde15e74 1968 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1969 sizeof(RTSPState),
1970 rtsp_probe,
1971 rtsp_read_header,
1972 rtsp_read_packet,
1973 rtsp_read_close,
ff762d6e 1974 rtsp_read_seek,
bb76a117 1975 .flags = AVFMT_NOFILE,
ff762d6e
FB
1976 .read_play = rtsp_read_play,
1977 .read_pause = rtsp_read_pause,
1617ad97 1978};
96862926 1979#endif
1617ad97 1980
cb1fdc61 1981static int sdp_probe(AVProbeData *p1)
93ced3e8 1982{
0e1ceacd 1983 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1984
1985 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1986 while (p < p_end && *p != '\0') {
c8965800
RB
1987 if (p + sizeof("c=IN IP4") - 1 < p_end &&
1988 av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1989 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1990
c8965800 1991 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1992 if (++p >= p_end)
cb1fdc61 1993 break;
cb1fdc61
FB
1994 if (*p == '\r')
1995 p++;
1996 }
93ced3e8
FB
1997 return 0;
1998}
1999
2000#define SDP_MAX_SIZE 8192
2001
c8965800 2002static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 2003{
8b1ab7bf 2004 RTSPState *rt = s->priv_data;
93ced3e8
FB
2005 RTSPStream *rtsp_st;
2006 int size, i, err;
2007 char *content;
2008 char url[1024];
2009
57b5555c
MS
2010 if (!ff_network_init())
2011 return AVERROR(EIO);
2012
93ced3e8
FB
2013 /* read the whole sdp file */
2014 /* XXX: better loading */
2015 content = av_malloc(SDP_MAX_SIZE);
899681cd 2016 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2017 if (size <= 0) {
2018 av_free(content);
2019 return AVERROR_INVALIDDATA;
2020 }
2021 content[size] ='\0';
2022
2023 sdp_parse(s, content);
2024 av_free(content);
2025
2026 /* open each RTP stream */
c8965800 2027 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 2028 rtsp_st = rt->rtsp_streams[i];
115329f1 2029
57b5555c
MS
2030 ff_url_join(url, sizeof(url), "rtp", NULL,
2031 inet_ntoa(rtsp_st->sdp_ip), rtsp_st->sdp_port,
2032 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
2033 rtsp_st->sdp_ttl);
dbf30963 2034 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
2035 err = AVERROR_INVALIDDATA;
2036 goto fail;
2037 }
ee0cb67f 2038 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2039 goto fail;
93ced3e8
FB
2040 }
2041 return 0;
c8965800 2042fail:
3307e6ea 2043 ff_rtsp_close_streams(s);
57b5555c 2044 ff_network_close();
93ced3e8
FB
2045 return err;
2046}
2047
93ced3e8
FB
2048static int sdp_read_close(AVFormatContext *s)
2049{
3307e6ea 2050 ff_rtsp_close_streams(s);
57b5555c 2051 ff_network_close();
93ced3e8
FB
2052 return 0;
2053}
2054
ff70e601 2055AVInputFormat sdp_demuxer = {
93ced3e8 2056 "sdp",
bde15e74 2057 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
2058 sizeof(RTSPState),
2059 sdp_probe,
2060 sdp_read_header,
d7250724 2061 rtsp_fetch_packet,
93ced3e8
FB
2062 sdp_read_close,
2063};