Libav
rtspdec.c
Go to the documentation of this file.
1 /*
2  * RTSP demuxer
3  * Copyright (c) 2002 Fabrice Bellard
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
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
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "libavutil/avstring.h"
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/mathematics.h"
25 #include "libavutil/random_seed.h"
26 #include "libavutil/time.h"
27 #include "avformat.h"
28 
29 #include "internal.h"
30 #include "network.h"
31 #include "os_support.h"
32 #include "rtpproto.h"
33 #include "rtsp.h"
34 #include "rdt.h"
35 #include "url.h"
36 
37 static const struct RTSPStatusMessage {
39  const char *message;
40 } status_messages[] = {
41  { RTSP_STATUS_OK, "OK" },
42  { RTSP_STATUS_METHOD, "Method Not Allowed" },
43  { RTSP_STATUS_BANDWIDTH, "Not Enough Bandwidth" },
44  { RTSP_STATUS_SESSION, "Session Not Found" },
45  { RTSP_STATUS_STATE, "Method Not Valid in This State" },
46  { RTSP_STATUS_AGGREGATE, "Aggregate operation not allowed" },
47  { RTSP_STATUS_ONLY_AGGREGATE, "Only aggregate operation allowed" },
48  { RTSP_STATUS_TRANSPORT, "Unsupported transport" },
49  { RTSP_STATUS_INTERNAL, "Internal Server Error" },
50  { RTSP_STATUS_SERVICE, "Service Unavailable" },
51  { RTSP_STATUS_VERSION, "RTSP Version not supported" },
52  { 0, "NULL" }
53 };
54 
56 {
57  RTSPState *rt = s->priv_data;
58 
59  if (!(rt->rtsp_flags & RTSP_FLAG_LISTEN))
60  ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
61 
65  rt->real_setup = NULL;
67  return 0;
68 }
69 
70 static inline int read_line(AVFormatContext *s, char *rbuf, const int rbufsize,
71  int *rbuflen)
72 {
73  RTSPState *rt = s->priv_data;
74  int idx = 0;
75  int ret = 0;
76  *rbuflen = 0;
77 
78  do {
79  ret = ffurl_read_complete(rt->rtsp_hd, rbuf + idx, 1);
80  if (ret <= 0)
81  return ret ? ret : AVERROR_EOF;
82  if (rbuf[idx] == '\r') {
83  /* Ignore */
84  } else if (rbuf[idx] == '\n') {
85  rbuf[idx] = '\0';
86  *rbuflen = idx;
87  return 0;
88  } else
89  idx++;
90  } while (idx < rbufsize);
91  av_log(s, AV_LOG_ERROR, "Message too long\n");
92  return AVERROR(EIO);
93 }
94 
96  const char *extracontent, uint16_t seq)
97 {
98  RTSPState *rt = s->priv_data;
99  char message[4096];
100  int index = 0;
101  while (status_messages[index].code) {
102  if (status_messages[index].code == code) {
103  snprintf(message, sizeof(message), "RTSP/1.0 %d %s\r\n",
104  code, status_messages[index].message);
105  break;
106  }
107  index++;
108  }
109  if (!status_messages[index].code)
110  return AVERROR(EINVAL);
111  av_strlcatf(message, sizeof(message), "CSeq: %d\r\n", seq);
112  av_strlcatf(message, sizeof(message), "Server: %s\r\n", LIBAVFORMAT_IDENT);
113  if (extracontent)
114  av_strlcat(message, extracontent, sizeof(message));
115  av_strlcat(message, "\r\n", sizeof(message));
116  av_dlog(s, "Sending response:\n%s", message);
117  ffurl_write(rt->rtsp_hd, message, strlen(message));
118 
119  return 0;
120 }
121 
122 static inline int check_sessionid(AVFormatContext *s,
123  RTSPMessageHeader *request)
124 {
125  RTSPState *rt = s->priv_data;
126  unsigned char *session_id = rt->session_id;
127  if (!session_id[0]) {
128  av_log(s, AV_LOG_WARNING, "There is no session-id at the moment\n");
129  return 0;
130  }
131  if (strcmp(session_id, request->session_id)) {
132  av_log(s, AV_LOG_ERROR, "Unexpected session-id %s\n",
133  request->session_id);
136  }
137  return 0;
138 }
139 
140 static inline int rtsp_read_request(AVFormatContext *s,
141  RTSPMessageHeader *request,
142  const char *method)
143 {
144  RTSPState *rt = s->priv_data;
145  char rbuf[1024];
146  int rbuflen, ret;
147  do {
148  ret = read_line(s, rbuf, sizeof(rbuf), &rbuflen);
149  if (ret)
150  return ret;
151  if (rbuflen > 1) {
152  av_dlog(s, "Parsing[%d]: %s\n", rbuflen, rbuf);
153  ff_rtsp_parse_line(request, rbuf, rt, method);
154  }
155  } while (rbuflen > 0);
156  if (request->seq != rt->seq + 1) {
157  av_log(s, AV_LOG_ERROR, "Unexpected Sequence number %d\n",
158  request->seq);
159  return AVERROR(EINVAL);
160  }
161  if (rt->session_id[0] && strcmp(method, "OPTIONS")) {
162  ret = check_sessionid(s, request);
163  if (ret)
164  return ret;
165  }
166 
167  return 0;
168 }
169 
171 {
172  RTSPState *rt = s->priv_data;
173  RTSPMessageHeader request = { 0 };
174  char sdp[4096];
175  int ret;
176 
177  ret = rtsp_read_request(s, &request, "ANNOUNCE");
178  if (ret)
179  return ret;
180  rt->seq++;
181  if (strcmp(request.content_type, "application/sdp")) {
182  av_log(s, AV_LOG_ERROR, "Unexpected content type %s\n",
183  request.content_type);
186  }
187  if (request.content_length && request.content_length < sizeof(sdp) - 1) {
188  /* Read SDP */
189  if (ffurl_read_complete(rt->rtsp_hd, sdp, request.content_length)
190  < request.content_length) {
191  av_log(s, AV_LOG_ERROR,
192  "Unable to get complete SDP Description in ANNOUNCE\n");
194  return AVERROR(EIO);
195  }
196  sdp[request.content_length] = '\0';
197  av_log(s, AV_LOG_VERBOSE, "SDP: %s\n", sdp);
198  ret = ff_sdp_parse(s, sdp);
199  if (ret)
200  return ret;
201  rtsp_send_reply(s, RTSP_STATUS_OK, NULL, request.seq);
202  return 0;
203  }
204  av_log(s, AV_LOG_ERROR,
205  "Content-Length header value exceeds sdp allocated buffer (4KB)\n");
207  "Content-Length exceeds buffer size", request.seq);
208  return AVERROR(EIO);
209 }
210 
212 {
213  RTSPState *rt = s->priv_data;
214  RTSPMessageHeader request = { 0 };
215  int ret = 0;
216 
217  /* Parsing headers */
218  ret = rtsp_read_request(s, &request, "OPTIONS");
219  if (ret)
220  return ret;
221  rt->seq++;
222  /* Send Reply */
224  "Public: ANNOUNCE, PAUSE, SETUP, TEARDOWN, RECORD\r\n",
225  request.seq);
226  return 0;
227 }
228 
229 static int rtsp_read_setup(AVFormatContext *s, char* host, char *controlurl)
230 {
231  RTSPState *rt = s->priv_data;
232  RTSPMessageHeader request = { 0 };
233  int ret = 0;
234  char url[1024];
235  RTSPStream *rtsp_st;
236  char responseheaders[1024];
237  int localport = -1;
238  int transportidx = 0;
239  int streamid = 0;
240 
241  ret = rtsp_read_request(s, &request, "SETUP");
242  if (ret)
243  return ret;
244  rt->seq++;
245  if (!request.nb_transports) {
246  av_log(s, AV_LOG_ERROR, "No transport defined in SETUP\n");
247  return AVERROR_INVALIDDATA;
248  }
249  for (transportidx = 0; transportidx < request.nb_transports;
250  transportidx++) {
251  if (!request.transports[transportidx].mode_record ||
252  (request.transports[transportidx].lower_transport !=
254  request.transports[transportidx].lower_transport !=
256  av_log(s, AV_LOG_ERROR, "mode=record/receive not set or transport"
257  " protocol not supported (yet)\n");
258  return AVERROR_INVALIDDATA;
259  }
260  }
261  if (request.nb_transports > 1)
262  av_log(s, AV_LOG_WARNING, "More than one transport not supported, "
263  "using first of all\n");
264  for (streamid = 0; streamid < rt->nb_rtsp_streams; streamid++) {
265  if (!strcmp(rt->rtsp_streams[streamid]->control_url,
266  controlurl))
267  break;
268  }
269  if (streamid == rt->nb_rtsp_streams) {
270  av_log(s, AV_LOG_ERROR, "Unable to find requested track\n");
272  }
273  rtsp_st = rt->rtsp_streams[streamid];
274  localport = rt->rtp_port_min;
275 
278  if ((ret = ff_rtsp_open_transport_ctx(s, rtsp_st))) {
280  return ret;
281  }
282  rtsp_st->interleaved_min = request.transports[0].interleaved_min;
283  rtsp_st->interleaved_max = request.transports[0].interleaved_max;
284  snprintf(responseheaders, sizeof(responseheaders), "Transport: "
285  "RTP/AVP/TCP;unicast;mode=receive;interleaved=%d-%d"
286  "\r\n", request.transports[0].interleaved_min,
287  request.transports[0].interleaved_max);
288  } else {
289  do {
290  ff_url_join(url, sizeof(url), "rtp", NULL, host, localport, NULL);
291  av_dlog(s, "Opening: %s", url);
292  ret = ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
293  &s->interrupt_callback, NULL);
294  if (ret)
295  localport += 2;
296  } while (ret || localport > rt->rtp_port_max);
297  if (localport > rt->rtp_port_max) {
299  return ret;
300  }
301 
302  av_dlog(s, "Listening on: %d",
304  if ((ret = ff_rtsp_open_transport_ctx(s, rtsp_st))) {
306  return ret;
307  }
308 
309  localport = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
310  snprintf(responseheaders, sizeof(responseheaders), "Transport: "
311  "RTP/AVP/UDP;unicast;mode=receive;source=%s;"
312  "client_port=%d-%d;server_port=%d-%d\r\n",
313  host, request.transports[0].client_port_min,
314  request.transports[0].client_port_max, localport,
315  localport + 1);
316  }
317 
318  /* Establish sessionid if not previously set */
319  /* Put this in a function? */
320  /* RFC 2326: session id must be at least 8 digits */
321  while (strlen(rt->session_id) < 8)
322  av_strlcatf(rt->session_id, 512, "%u", av_get_random_seed());
323 
324  av_strlcatf(responseheaders, sizeof(responseheaders), "Session: %s\r\n",
325  rt->session_id);
326  /* Send Reply */
327  rtsp_send_reply(s, RTSP_STATUS_OK, responseheaders, request.seq);
328 
329  rt->state = RTSP_STATE_PAUSED;
330  return 0;
331 }
332 
334 {
335  RTSPState *rt = s->priv_data;
336  RTSPMessageHeader request = { 0 };
337  int ret = 0;
338  char responseheaders[1024];
339 
340  ret = rtsp_read_request(s, &request, "RECORD");
341  if (ret)
342  return ret;
343  ret = check_sessionid(s, &request);
344  if (ret)
345  return ret;
346  rt->seq++;
347  snprintf(responseheaders, sizeof(responseheaders), "Session: %s\r\n",
348  rt->session_id);
349  rtsp_send_reply(s, RTSP_STATUS_OK, responseheaders, request.seq);
350 
352  return 0;
353 }
354 
355 static inline int parse_command_line(AVFormatContext *s, const char *line,
356  int linelen, char *uri, int urisize,
357  char *method, int methodsize,
358  enum RTSPMethod *methodcode)
359 {
360  RTSPState *rt = s->priv_data;
361  const char *linept, *searchlinept;
362  linept = strchr(line, ' ');
363  if (linept - line > methodsize - 1) {
364  av_log(s, AV_LOG_ERROR, "Method string too long\n");
365  return AVERROR(EIO);
366  }
367  memcpy(method, line, linept - line);
368  method[linept - line] = '\0';
369  linept++;
370  if (!strcmp(method, "ANNOUNCE"))
371  *methodcode = ANNOUNCE;
372  else if (!strcmp(method, "OPTIONS"))
373  *methodcode = OPTIONS;
374  else if (!strcmp(method, "RECORD"))
375  *methodcode = RECORD;
376  else if (!strcmp(method, "SETUP"))
377  *methodcode = SETUP;
378  else if (!strcmp(method, "PAUSE"))
379  *methodcode = PAUSE;
380  else if (!strcmp(method, "TEARDOWN"))
381  *methodcode = TEARDOWN;
382  else
383  *methodcode = UNKNOWN;
384  /* Check method with the state */
385  if (rt->state == RTSP_STATE_IDLE) {
386  if ((*methodcode != ANNOUNCE) && (*methodcode != OPTIONS)) {
387  av_log(s, AV_LOG_ERROR, "Unexpected command in Idle State %s\n",
388  line);
390  }
391  } else if (rt->state == RTSP_STATE_PAUSED) {
392  if ((*methodcode != OPTIONS) && (*methodcode != RECORD)
393  && (*methodcode != SETUP)) {
394  av_log(s, AV_LOG_ERROR, "Unexpected command in Paused State %s\n",
395  line);
397  }
398  } else if (rt->state == RTSP_STATE_STREAMING) {
399  if ((*methodcode != PAUSE) && (*methodcode != OPTIONS)
400  && (*methodcode != TEARDOWN)) {
401  av_log(s, AV_LOG_ERROR, "Unexpected command in Streaming State"
402  " %s\n", line);
404  }
405  } else {
406  av_log(s, AV_LOG_ERROR, "Unexpected State [%d]\n", rt->state);
407  return AVERROR_BUG;
408  }
409 
410  searchlinept = strchr(linept, ' ');
411  if (!searchlinept) {
412  av_log(s, AV_LOG_ERROR, "Error parsing message URI\n");
413  return AVERROR_INVALIDDATA;
414  }
415  if (searchlinept - linept > urisize - 1) {
416  av_log(s, AV_LOG_ERROR, "uri string length exceeded buffer size\n");
417  return AVERROR(EIO);
418  }
419  memcpy(uri, linept, searchlinept - linept);
420  uri[searchlinept - linept] = '\0';
421  if (strcmp(rt->control_uri, uri)) {
422  char host[128], path[512], auth[128];
423  int port;
424  char ctl_host[128], ctl_path[512], ctl_auth[128];
425  int ctl_port;
426  av_url_split(NULL, 0, auth, sizeof(auth), host, sizeof(host), &port,
427  path, sizeof(path), uri);
428  av_url_split(NULL, 0, ctl_auth, sizeof(ctl_auth), ctl_host,
429  sizeof(ctl_host), &ctl_port, ctl_path, sizeof(ctl_path),
430  rt->control_uri);
431  if (strcmp(host, ctl_host))
432  av_log(s, AV_LOG_INFO, "Host %s differs from expected %s\n",
433  host, ctl_host);
434  if (strcmp(path, ctl_path) && *methodcode != SETUP)
435  av_log(s, AV_LOG_WARNING, "WARNING: Path %s differs from expected"
436  " %s\n", path, ctl_path);
437  if (*methodcode == ANNOUNCE) {
438  av_log(s, AV_LOG_INFO,
439  "Updating control URI to %s\n", uri);
440  av_strlcpy(rt->control_uri, uri, sizeof(rt->control_uri));
441  }
442  }
443 
444  linept = searchlinept + 1;
445  if (!av_strstart(linept, "RTSP/1.0", NULL)) {
446  av_log(s, AV_LOG_ERROR, "Error parsing protocol or version\n");
448  }
449  return 0;
450 }
451 
453 {
454  RTSPState *rt = s->priv_data;
455  unsigned char rbuf[4096];
456  unsigned char method[10];
457  char uri[500];
458  int ret;
459  int rbuflen = 0;
460  RTSPMessageHeader request = { 0 };
461  enum RTSPMethod methodcode;
462 
463  ret = read_line(s, rbuf, sizeof(rbuf), &rbuflen);
464  if (ret < 0)
465  return ret;
466  ret = parse_command_line(s, rbuf, rbuflen, uri, sizeof(uri), method,
467  sizeof(method), &methodcode);
468  if (ret) {
469  av_log(s, AV_LOG_ERROR, "RTSP: Unexpected Command\n");
470  return ret;
471  }
472 
473  ret = rtsp_read_request(s, &request, method);
474  if (ret)
475  return ret;
476  rt->seq++;
477  if (methodcode == PAUSE) {
478  rt->state = RTSP_STATE_PAUSED;
479  ret = rtsp_send_reply(s, RTSP_STATUS_OK, NULL , request.seq);
480  // TODO: Missing date header in response
481  } else if (methodcode == OPTIONS) {
483  "Public: ANNOUNCE, PAUSE, SETUP, TEARDOWN, "
484  "RECORD\r\n", request.seq);
485  } else if (methodcode == TEARDOWN) {
486  rt->state = RTSP_STATE_IDLE;
487  ret = rtsp_send_reply(s, RTSP_STATUS_OK, NULL , request.seq);
488  return 0;
489  }
490  return ret;
491 }
492 
494 {
495  RTSPState *rt = s->priv_data;
496  RTSPMessageHeader reply1, *reply = &reply1;
497  int i;
498  char cmd[1024];
499 
500  av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
501  rt->nb_byes = 0;
502 
503  if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
504  if (rt->transport == RTSP_TRANSPORT_RTP) {
505  for (i = 0; i < rt->nb_rtsp_streams; i++) {
506  RTSPStream *rtsp_st = rt->rtsp_streams[i];
507  RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
508  if (!rtpctx)
509  continue;
513  rtpctx->base_timestamp = 0;
514  rtpctx->timestamp = 0;
515  rtpctx->unwrapped_timestamp = 0;
516  rtpctx->rtcp_ts_offset = 0;
517  }
518  }
519  if (rt->state == RTSP_STATE_PAUSED) {
520  cmd[0] = 0;
521  } else {
522  snprintf(cmd, sizeof(cmd),
523  "Range: npt=%"PRId64".%03"PRId64"-\r\n",
525  rt->seek_timestamp / (AV_TIME_BASE / 1000) % 1000);
526  }
527  ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
528  if (reply->status_code != RTSP_STATUS_OK) {
529  return -1;
530  }
531  if (rt->transport == RTSP_TRANSPORT_RTP &&
532  reply->range_start != AV_NOPTS_VALUE) {
533  for (i = 0; i < rt->nb_rtsp_streams; i++) {
534  RTSPStream *rtsp_st = rt->rtsp_streams[i];
535  RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
536  AVStream *st = NULL;
537  if (!rtpctx || rtsp_st->stream_index < 0)
538  continue;
539  st = s->streams[rtsp_st->stream_index];
540  rtpctx->range_start_offset =
542  st->time_base);
543  }
544  }
545  }
547  return 0;
548 }
549 
550 /* pause the stream */
552 {
553  RTSPState *rt = s->priv_data;
554  RTSPMessageHeader reply1, *reply = &reply1;
555 
556  if (rt->state != RTSP_STATE_STREAMING)
557  return 0;
558  else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
559  ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
560  if (reply->status_code != RTSP_STATUS_OK) {
561  return -1;
562  }
563  }
564  rt->state = RTSP_STATE_PAUSED;
565  return 0;
566 }
567 
569 {
570  RTSPState *rt = s->priv_data;
571  char cmd[1024];
572  unsigned char *content = NULL;
573  int ret;
574 
575  /* describe the stream */
576  snprintf(cmd, sizeof(cmd),
577  "Accept: application/sdp\r\n");
578  if (rt->server_type == RTSP_SERVER_REAL) {
583  av_strlcat(cmd,
584  "Require: com.real.retain-entity-for-setup\r\n",
585  sizeof(cmd));
586  }
587  ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
588  if (!content)
589  return AVERROR_INVALIDDATA;
590  if (reply->status_code != RTSP_STATUS_OK) {
591  av_freep(&content);
592  return AVERROR_INVALIDDATA;
593  }
594 
595  av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", content);
596  /* now we got the SDP description, we parse it */
597  ret = ff_sdp_parse(s, (const char *)content);
598  av_freep(&content);
599  if (ret < 0)
600  return ret;
601 
602  return 0;
603 }
604 
606 {
607  RTSPState *rt = s->priv_data;
608  char host[128], path[512], auth[128];
609  char uri[500];
610  int port;
611  char tcpname[500];
612  unsigned char rbuf[4096];
613  unsigned char method[10];
614  int rbuflen = 0;
615  int ret;
616  enum RTSPMethod methodcode;
617 
618  /* extract hostname and port */
619  av_url_split(NULL, 0, auth, sizeof(auth), host, sizeof(host), &port,
620  path, sizeof(path), s->filename);
621 
622  /* ff_url_join. No authorization by now (NULL) */
623  ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL, host,
624  port, "%s", path);
625 
626  if (port < 0)
627  port = RTSP_DEFAULT_PORT;
628 
629  /* Create TCP connection */
630  ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port,
631  "?listen&listen_timeout=%d", rt->initial_timeout * 1000);
632 
633  if (ret = ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
634  &s->interrupt_callback, NULL)) {
635  av_log(s, AV_LOG_ERROR, "Unable to open RTSP for listening\n");
636  return ret;
637  }
638  rt->state = RTSP_STATE_IDLE;
639  rt->rtsp_hd_out = rt->rtsp_hd;
640  for (;;) { /* Wait for incoming RTSP messages */
641  ret = read_line(s, rbuf, sizeof(rbuf), &rbuflen);
642  if (ret < 0)
643  return ret;
644  ret = parse_command_line(s, rbuf, rbuflen, uri, sizeof(uri), method,
645  sizeof(method), &methodcode);
646  if (ret) {
647  av_log(s, AV_LOG_ERROR, "RTSP: Unexpected Command\n");
648  return ret;
649  }
650 
651  if (methodcode == ANNOUNCE) {
652  ret = rtsp_read_announce(s);
653  rt->state = RTSP_STATE_PAUSED;
654  } else if (methodcode == OPTIONS) {
655  ret = rtsp_read_options(s);
656  } else if (methodcode == RECORD) {
657  ret = rtsp_read_record(s);
658  if (!ret)
659  return 0; // We are ready for streaming
660  } else if (methodcode == SETUP)
661  ret = rtsp_read_setup(s, host, uri);
662  if (ret) {
663  ffurl_close(rt->rtsp_hd);
664  return AVERROR_INVALIDDATA;
665  }
666  }
667  return 0;
668 }
669 
670 static int rtsp_probe(AVProbeData *p)
671 {
672  if (av_strstart(p->filename, "rtsp:", NULL))
673  return AVPROBE_SCORE_MAX;
674  return 0;
675 }
676 
678 {
679  RTSPState *rt = s->priv_data;
680  int ret;
681 
682  if (rt->initial_timeout > 0)
684 
685  if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
686  ret = rtsp_listen(s);
687  if (ret)
688  return ret;
689  } else {
690  ret = ff_rtsp_connect(s);
691  if (ret)
692  return ret;
693 
694  rt->real_setup_cache = !s->nb_streams ? NULL :
695  av_mallocz(2 * s->nb_streams * sizeof(*rt->real_setup_cache));
696  if (!rt->real_setup_cache && s->nb_streams)
697  return AVERROR(ENOMEM);
698  rt->real_setup = rt->real_setup_cache + s->nb_streams;
699 
700  if (rt->initial_pause) {
701  /* do not start immediately */
702  } else {
703  if (rtsp_read_play(s) < 0) {
706  return AVERROR_INVALIDDATA;
707  }
708  }
709  }
710 
711  return 0;
712 }
713 
715  uint8_t *buf, int buf_size)
716 {
717  RTSPState *rt = s->priv_data;
718  int id, len, i, ret;
719  RTSPStream *rtsp_st;
720 
721  av_dlog(s, "tcp_read_packet:\n");
722 redo:
723  for (;;) {
724  RTSPMessageHeader reply;
725 
726  ret = ff_rtsp_read_reply(s, &reply, NULL, 1, NULL);
727  if (ret < 0)
728  return ret;
729  if (ret == 1) /* received '$' */
730  break;
731  /* XXX: parse message */
732  if (rt->state != RTSP_STATE_STREAMING)
733  return 0;
734  }
735  ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
736  if (ret != 3)
737  return -1;
738  id = buf[0];
739  len = AV_RB16(buf + 1);
740  av_dlog(s, "id=%d len=%d\n", id, len);
741  if (len > buf_size || len < 12)
742  goto redo;
743  /* get the data */
744  ret = ffurl_read_complete(rt->rtsp_hd, buf, len);
745  if (ret != len)
746  return -1;
747  if (rt->transport == RTSP_TRANSPORT_RDT &&
748  ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
749  return -1;
750 
751  /* find the matching stream */
752  for (i = 0; i < rt->nb_rtsp_streams; i++) {
753  rtsp_st = rt->rtsp_streams[i];
754  if (id >= rtsp_st->interleaved_min &&
755  id <= rtsp_st->interleaved_max)
756  goto found;
757  }
758  goto redo;
759 found:
760  *prtsp_st = rtsp_st;
761  return len;
762 }
763 
765 {
766  RTSPState *rt = s->priv_data;
767  char host[1024];
768  int port;
769 
770  av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port, NULL, 0,
771  s->filename);
772  ff_rtsp_undo_setup(s, 0);
774  rt->real_challenge);
775 }
776 
778 {
779  RTSPState *rt = s->priv_data;
780  int ret;
781  RTSPMessageHeader reply1, *reply = &reply1;
782  char cmd[1024];
783 
784 retry:
785  if (rt->server_type == RTSP_SERVER_REAL) {
786  int i;
787 
788  for (i = 0; i < s->nb_streams; i++)
789  rt->real_setup[i] = s->streams[i]->discard;
790 
791  if (!rt->need_subscription) {
792  if (memcmp (rt->real_setup, rt->real_setup_cache,
793  sizeof(enum AVDiscard) * s->nb_streams)) {
794  snprintf(cmd, sizeof(cmd),
795  "Unsubscribe: %s\r\n",
796  rt->last_subscription);
797  ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
798  cmd, reply, NULL);
799  if (reply->status_code != RTSP_STATUS_OK)
800  return AVERROR_INVALIDDATA;
801  rt->need_subscription = 1;
802  }
803  }
804 
805  if (rt->need_subscription) {
806  int r, rule_nr, first = 1;
807 
808  memcpy(rt->real_setup_cache, rt->real_setup,
809  sizeof(enum AVDiscard) * s->nb_streams);
810  rt->last_subscription[0] = 0;
811 
812  snprintf(cmd, sizeof(cmd),
813  "Subscribe: ");
814  for (i = 0; i < rt->nb_rtsp_streams; i++) {
815  rule_nr = 0;
816  for (r = 0; r < s->nb_streams; r++) {
817  if (s->streams[r]->id == i) {
818  if (s->streams[r]->discard != AVDISCARD_ALL) {
819  if (!first)
820  av_strlcat(rt->last_subscription, ",",
821  sizeof(rt->last_subscription));
823  rt->last_subscription,
824  sizeof(rt->last_subscription), i, rule_nr);
825  first = 0;
826  }
827  rule_nr++;
828  }
829  }
830  }
831  av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
832  ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
833  cmd, reply, NULL);
834  if (reply->status_code != RTSP_STATUS_OK)
835  return AVERROR_INVALIDDATA;
836  rt->need_subscription = 0;
837 
838  if (rt->state == RTSP_STATE_STREAMING)
839  rtsp_read_play (s);
840  }
841  }
842 
843  ret = ff_rtsp_fetch_packet(s, pkt);
844  if (ret < 0) {
845  if (ret == AVERROR(ETIMEDOUT) && !rt->packets) {
848  RTSPMessageHeader reply1, *reply = &reply1;
849  av_log(s, AV_LOG_WARNING, "UDP timeout, retrying with TCP\n");
850  if (rtsp_read_pause(s) != 0)
851  return -1;
852  // TEARDOWN is required on Real-RTSP, but might make
853  // other servers close the connection.
854  if (rt->server_type == RTSP_SERVER_REAL)
855  ff_rtsp_send_cmd(s, "TEARDOWN", rt->control_uri, NULL,
856  reply, NULL);
857  rt->session_id[0] = '\0';
858  if (resetup_tcp(s) == 0) {
859  rt->state = RTSP_STATE_IDLE;
860  rt->need_subscription = 1;
861  if (rtsp_read_play(s) != 0)
862  return -1;
863  goto retry;
864  }
865  }
866  }
867  return ret;
868  }
869  rt->packets++;
870 
871  if (!(rt->rtsp_flags & RTSP_FLAG_LISTEN)) {
872  /* send dummy request to keep TCP connection alive */
873  if ((av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2 ||
874  rt->auth_state.stale) {
875  if (rt->server_type == RTSP_SERVER_WMS ||
876  (rt->server_type != RTSP_SERVER_REAL &&
878  ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
879  } else {
880  ff_rtsp_send_cmd_async(s, "OPTIONS", rt->control_uri, NULL);
881  }
882  /* The stale flag should be reset when creating the auth response in
883  * ff_rtsp_send_cmd_async, but reset it here just in case we never
884  * called the auth code (if we didn't have any credentials set). */
885  rt->auth_state.stale = 0;
886  }
887  }
888 
889  return 0;
890 }
891 
892 static int rtsp_read_seek(AVFormatContext *s, int stream_index,
893  int64_t timestamp, int flags)
894 {
895  RTSPState *rt = s->priv_data;
896 
897  rt->seek_timestamp = av_rescale_q(timestamp,
898  s->streams[stream_index]->time_base,
900  switch(rt->state) {
901  default:
902  case RTSP_STATE_IDLE:
903  break;
905  if (rtsp_read_pause(s) != 0)
906  return -1;
908  if (rtsp_read_play(s) != 0)
909  return -1;
910  break;
911  case RTSP_STATE_PAUSED:
912  rt->state = RTSP_STATE_IDLE;
913  break;
914  }
915  return 0;
916 }
917 
918 static const AVClass rtsp_demuxer_class = {
919  .class_name = "RTSP demuxer",
920  .item_name = av_default_item_name,
921  .option = ff_rtsp_options,
922  .version = LIBAVUTIL_VERSION_INT,
923 };
924 
926  .name = "rtsp",
927  .long_name = NULL_IF_CONFIG_SMALL("RTSP input"),
928  .priv_data_size = sizeof(RTSPState),
934  .flags = AVFMT_NOFILE,
935  .read_play = rtsp_read_play,
936  .read_pause = rtsp_read_pause,
937  .priv_class = &rtsp_demuxer_class,
938 };
int interleaved_min
interleave ids, if TCP transport; each TCP/RTSP data packet starts with a '$', stream length and stre...
Definition: rtsp.h:92
void av_url_split(char *proto, int proto_size, char *authorization, int authorization_size, char *hostname, int hostname_size, int *port_ptr, char *path, int path_size, const char *url)
Split a URL string into components.
Definition: utils.c:2705
int rtp_port_min
Minimum and maximum local UDP ports.
Definition: rtsp.h:386
Realmedia Data Transport.
Definition: rtsp.h:58
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:54
static int rtsp_read_options(AVFormatContext *s)
Definition: rtspdec.c:211
int ff_rtp_get_local_rtp_port(URLContext *h)
Return the local rtp port used by the RTP connection.
Definition: rtpproto.c:498
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1163
static const struct RTSPStatusMessage status_messages[]
enum AVCodecID id
Definition: mxfenc.c:84
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:525
char content_type[64]
Content type header.
Definition: rtsp.h:186
static int rtsp_read_request(AVFormatContext *s, RTSPMessageHeader *request, const char *method)
Definition: rtspdec.c:140
static int rtsp_read_close(AVFormatContext *s)
Definition: rtspdec.c:55
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:129
char control_uri[1024]
some MS RTSP streams contain a URL in the SDP that we need to use for all subsequent RTSP requests...
Definition: rtsp.h:316
static int rtsp_read_header(AVFormatContext *s)
Definition: rtspdec.c:677
int ffurl_write(URLContext *h, const unsigned char *buf, int size)
Write size bytes from buf to the resource accessed by h.
Definition: avio.c:276
#define RTSP_DEFAULT_PORT
Definition: rtsp.h:72
Windows Media server.
Definition: rtsp.h:208
int64_t range_start_offset
Definition: rtpdec.h:157
int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
Open RTSP transport context.
Definition: rtsp.c:732
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
static int rtsp_probe(AVProbeData *p)
Definition: rtspdec.c:670
enum AVDiscard * real_setup
current stream setup.
Definition: rtsp.h:295
static int resetup_tcp(AVFormatContext *s)
Definition: rtspdec.c:764
enum AVDiscard * real_setup_cache
stream setup during the last frame read.
Definition: rtsp.h:291
int mode_record
transport set to record data
Definition: rtsp.h:111
int ff_rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
Get the description of the stream and set up the RTSPStream child objects.
Definition: rtspdec.c:568
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
void ff_network_close(void)
Definition: network.c:150
UDP/unicast.
Definition: rtsp.h:38
int seq
sequence number
Definition: rtsp.h:143
initialized and sending/receiving data
Definition: rtsp.h:196
RTSPMethod
Definition: rtspcodes.h:40
char real_challenge[64]
the "RealChallenge1:" field from the server
Definition: rtsp.h:269
static int rtsp_read_pause(AVFormatContext *s)
Definition: rtspdec.c:551
const char * message
Definition: rtspdec.c:39
av_dlog(ac->avr,"%d samples - audio_convert: %s to %s (%s)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic?ac->func_descr_generic:ac->func_descr)
int ff_rtsp_tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st, uint8_t *buf, int buf_size)
Receive one RTP packet from an TCP interleaved RTSP stream.
Definition: rtspdec.c:714
discard all
Definition: avcodec.h:568
void ff_rdt_subscribe_rule(char *cmd, int size, int stream_nr, int rule_nr)
Add subscription information to Subscribe parameter string.
Definition: rdt.c:384
#define RTSP_FLAG_LISTEN
Wait for incoming connections.
Definition: rtsp.h:404
char session_id[512]
copy of RTSPMessageHeader->session_id, i.e.
Definition: rtsp.h:244
int64_t seek_timestamp
the seek value requested when calling av_seek_frame().
Definition: rtsp.h:238
static int rtsp_send_reply(AVFormatContext *s, enum RTSPStatusCode code, const char *extracontent, uint16_t seq)
Definition: rtspdec.c:95
static int check_sessionid(AVFormatContext *s, RTSPMessageHeader *request)
Definition: rtspdec.c:122
int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port, int lower_transport, const char *real_challenge)
Do the SETUP requests for each stream for the chosen lower transport mode.
enum RTSPLowerTransport lower_transport
network layer transport protocol; e.g.
Definition: rtsp.h:120
This describes the server response to each RTSP command.
Definition: rtsp.h:126
enum RTSPStatusCode code
Definition: rtspdec.c:38
void av_freep(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
Definition: mem.c:198
RTSPTransportField transports[RTSP_MAX_TRANSPORTS]
describes the complete "Transport:" line of the server in response to a SETUP RTSP command by the cli...
Definition: rtsp.h:141
Format I/O context.
Definition: avformat.h:922
int ff_rtsp_connect(AVFormatContext *s)
Connect to the RTSP server and set up the individual media streams.
static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rtspdec.c:777
int get_parameter_supported
Whether the server supports the GET_PARAMETER method.
Definition: rtsp.h:358
#define AV_RB16(x)
Definition: intreadwrite.h:208
Standards-compliant RTP.
Definition: rtsp.h:57
uint8_t
char session_id[512]
the "Session:" field.
Definition: rtsp.h:147
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:38
miscellaneous OS support macros and functions.
void ff_rtp_reset_packet_queue(RTPDemuxContext *s)
Definition: rtpdec.c:656
int id
Format-specific stream ID.
Definition: avformat.h:706
void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf, RTSPState *rt, const char *method)
int initial_timeout
Timeout to wait for incoming connections.
Definition: rtsp.h:391
static int read_line(AVFormatContext *s, char *rbuf, const int rbufsize, int *rbuflen)
Definition: rtspdec.c:70
URLContext * rtsp_hd_out
Additional output handle, used when input and output are done separately, eg for HTTP tunneling...
Definition: rtsp.h:327
Aggregate operation not allowed.
Definition: rtspcodes.h:32
static int rtsp_read_setup(AVFormatContext *s, char *host, char *controlurl)
Definition: rtspdec.c:229
#define AVERROR_PROTOCOL_NOT_FOUND
Protocol not found.
Definition: error.h:58
Service Unavailable.
Definition: rtspcodes.h:36
Describe a single stream, as identified by a single m= line block in the SDP content.
Definition: rtsp.h:420
static int flags
Definition: log.c:44
enum RTSPStatusCode status_code
response code from server
Definition: rtsp.h:130
#define AVERROR_EOF
End of file.
Definition: error.h:51
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:139
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:409
#define LIBAVFORMAT_IDENT
Definition: version.h:44
int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url, const char *headers, RTSPMessageHeader *reply, unsigned char **content_ptr)
Send a command to the RTSP server and wait for the reply.
static int rtsp_read_play(AVFormatContext *s)
Definition: rtspdec.c:493
int nb_transports
number of items in the 'transports' variable below
Definition: rtsp.h:133
Only aggregate operation allowed.
Definition: rtspcodes.h:33
#define r
Definition: input.c:51
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq) av_const
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:129
int ff_sdp_parse(AVFormatContext *s, const char *content)
Parse an SDP description of streams by populating an RTSPState struct within the AVFormatContext; als...
int ff_rtsp_parse_streaming_commands(AVFormatContext *s)
Parse RTSP commands (OPTIONS, PAUSE and TEARDOWN) during streaming in listen mode.
Definition: rtspdec.c:452
Private data for the RTSP demuxer.
Definition: rtsp.h:217
int64_t last_cmd_time
timestamp of the last RTSP command that we sent to the RTSP server.
Definition: rtsp.h:254
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:123
int timeout
copy of RTSPMessageHeader->timeout, i.e.
Definition: rtsp.h:249
void * priv_data
Format private data.
Definition: avformat.h:950
char filename[1024]
input or output filename
Definition: avformat.h:998
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:150
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:144
const AVOption ff_rtsp_options[]
Definition: rtsp.c:78
Definition: graph2dot.c:49
URLContext * rtsp_hd
Definition: rtsp.h:219
int64_t rtcp_ts_offset
Definition: rtpdec.h:180
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:81
static int parse_command_line(AVFormatContext *s, const char *line, int linelen, char *uri, int urisize, char *method, int methodsize, enum RTSPMethod *methodcode)
Definition: rtspdec.c:355
struct RTSPStream ** rtsp_streams
streams in this session
Definition: rtsp.h:224
static int rtsp_read_record(AVFormatContext *s)
Definition: rtspdec.c:333
uint32_t timestamp
Definition: rtpdec.h:153
int stream_index
corresponding stream index, if any.
Definition: rtsp.h:425
int seq
RTSP command sequence number.
Definition: rtsp.h:240
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:978
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:37
int nb_rtsp_streams
number of items in the 'rtsp_streams' variable
Definition: rtsp.h:222
int64_t first_rtcp_ntp_time
Definition: rtpdec.h:178
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:234
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
int content_length
length of the data following this header
Definition: rtsp.h:128
char last_subscription[1024]
the last value of the "SET_PARAMETER Subscribe:" RTSP command.
Definition: rtsp.h:300
const char * filename
Definition: avformat.h:396
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:990
int64_t last_rtcp_ntp_time
Definition: rtpdec.h:176
Method Not Allowed.
Definition: rtspcodes.h:28
LIBAVUTIL_VERSION_INT
Definition: eval.c:55
int stale
Auth ok, but needs to be resent with a new nonce.
Definition: httpauth.h:71
int ff_rdt_parse_header(const uint8_t *buf, int len, int *pset_id, int *pseq_no, int *pstream_id, int *pis_keyframe, uint32_t *ptimestamp)
Actual data handling.
Definition: rdt.c:190
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:544
if(ac->has_optimized_func)
Stream structure.
Definition: avformat.h:699
int ff_url_join(char *str, int size, const char *proto, const char *authorization, const char *hostname, int port, const char *fmt,...)
Definition: url.c:36
int nb_byes
Definition: rtsp.h:335
enum RTSPLowerTransport lower_transport
the negotiated network layer transport protocol; e.g.
Definition: rtsp.h:261
NULL
Definition: eval.c:55
#define AV_LOG_INFO
Standard information.
Definition: log.h:134
void ff_rtsp_undo_setup(AVFormatContext *s, int send_packets)
Undo the effect of ff_rtsp_make_setup_request, close the transport_priv and rtp_handle fields...
Definition: rtsp.c:663
int rtp_port_max
Definition: rtsp.h:386
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:240
int64_t unwrapped_timestamp
Definition: rtpdec.h:156
enum RTSPTransport transport
the negotiated data/packet transport protocol; e.g.
Definition: rtsp.h:257
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
Definition: libcdio.c:114
#define AVERROR_BUG
Bug detected, please report the issue.
Definition: error.h:60
int rtsp_flags
Various option flags for the RTSP muxer/demuxer.
Definition: rtsp.h:376
int client_port_max
Definition: rtsp.h:100
Describe the class of an AVClass context structure.
Definition: log.h:33
AVInputFormat ff_rtsp_demuxer
Definition: rtspdec.c:925
int index
Definition: gxfenc.c:72
static int rtsp_listen(AVFormatContext *s)
Definition: rtspdec.c:605
not initialized
Definition: rtsp.h:195
void ff_rtsp_close_streams(AVFormatContext *s)
Close and free all streams within the RTSP (de)muxer.
Definition: rtsp.c:699
This structure contains the data a format has to probe a file.
Definition: avformat.h:395
size_t av_strlcat(char *dst, const char *src, size_t size)
Append the string src to the string dst, but to a total length of no more than size - 1 bytes...
Definition: avstring.c:91
int interleaved_max
Definition: rtsp.h:92
enum RTSPServerType server_type
brand of server that we're talking to; e.g.
Definition: rtsp.h:266
int ffurl_close(URLContext *h)
Close the resource accessed by the URLContext h, and free the memory used by it.
Definition: avio.c:297
RTSPStatusCode
RTSP handling.
Definition: rtspcodes.h:26
int64_t range_start
Time range of the streams that the server will stream.
Definition: rtsp.h:137
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:404
enum RTSPClientState state
indicator of whether we are currently receiving data from the server.
Definition: rtsp.h:230
Not Enough Bandwidth.
Definition: rtspcodes.h:29
int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
Receive one packet from the RTSPStreams set up in the AVFormatContext (which should contain a RTSPSta...
int av_strstart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str.
Definition: avstring.c:32
static const AVClass rtsp_demuxer_class
Definition: rtspdec.c:918
initialized, requesting a seek
Definition: rtsp.h:198
int ffurl_open(URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options)
Create an URLContext for accessing to the resource indicated by url, and open it. ...
Definition: avio.c:211
int need_subscription
The following are used for Real stream selection.
Definition: rtsp.h:287
int ffurl_read_complete(URLContext *h, unsigned char *buf, int size)
Read as many bytes as possible (up to size), calling the read function multiple times if necessary...
Definition: avio.c:269
Main libavformat public API header.
static int rtsp_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: rtspdec.c:892
uint32_t base_timestamp
Definition: rtpdec.h:154
initialized, but not receiving data
Definition: rtsp.h:197
int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply, unsigned char **content_ptr, int return_on_interleaved_data, const char *method)
Read a RTSP message from the server, or prepare to read data packets if we're reading data interleave...
int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method, const char *url, const char *headers)
Send a command to the RTSP server without waiting for the reply.
#define AVERROR_OPTION_NOT_FOUND
Option not found.
Definition: error.h:56
TCP; interleaved in RTSP.
Definition: rtsp.h:39
HTTPAuthState auth_state
authentication state
Definition: rtsp.h:275
int len
Unsupported transport.
Definition: rtspcodes.h:34
#define AVIO_FLAG_READ_WRITE
read-write pseudo flag
Definition: avio.h:294
char control_url[1024]
url for this stream (from SDP)
Definition: rtsp.h:431
Method Not Valid in This State.
Definition: rtspcodes.h:31
#define AVERROR_STREAM_NOT_FOUND
Stream not found.
Definition: error.h:59
uint64_t packets
The number of returned packets.
Definition: rtsp.h:348
AVDiscard
Definition: avcodec.h:560
Realmedia-style server.
Definition: rtsp.h:207
int lower_transport_mask
A mask with all requested transport methods.
Definition: rtsp.h:343
static int rtsp_read_announce(AVFormatContext *s)
Definition: rtspdec.c:170
RTSP Version not supported.
Definition: rtspcodes.h:37
unbuffered private I/O API
uint32_t av_get_random_seed(void)
Get random data.
Definition: random_seed.c:95
Internal Server Error.
Definition: rtspcodes.h:35
Session Not Found.
Definition: rtspcodes.h:30
av_default_item_name
Return the context name.
Definition: dnxhdenc.c:52
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:741
int interleaved_max
Definition: rtsp.h:429
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:762
int interleaved_min
interleave IDs; copies of RTSPTransportField->interleaved_min/max for the selected transport...
Definition: rtsp.h:429
This structure stores compressed data.
Definition: avcodec.h:950
void ff_rtsp_close_connections(AVFormatContext *s)
Close all connection handles within the RTSP (de)muxer.
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...) av_printf_format(3
Append output to a string, according to a format.
URLContext * rtp_handle
RTP stream handle (if UDP)
Definition: rtsp.h:421
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:228
void * av_mallocz(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:205
void * transport_priv
RTP/RDT parse context if input, RTP AVFormatContext if output.
Definition: rtsp.h:422
int client_port_min
UDP client ports; these should be the local ports of the UDP RTP (and RTCP) sockets over which we rec...
Definition: rtsp.h:100
int initial_pause
Do not begin to play the stream immediately.
Definition: rtsp.h:363