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rtspdec.c
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1 /*
2  * RTSP demuxer
3  * Copyright (c) 2002 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 "tls.h"
36 #include "url.h"
37 
38 static const struct RTSPStatusMessage {
40  const char *message;
41 } status_messages[] = {
42  { RTSP_STATUS_OK, "OK" },
43  { RTSP_STATUS_METHOD, "Method Not Allowed" },
44  { RTSP_STATUS_BANDWIDTH, "Not Enough Bandwidth" },
45  { RTSP_STATUS_SESSION, "Session Not Found" },
46  { RTSP_STATUS_STATE, "Method Not Valid in This State" },
47  { RTSP_STATUS_AGGREGATE, "Aggregate operation not allowed" },
48  { RTSP_STATUS_ONLY_AGGREGATE, "Only aggregate operation allowed" },
49  { RTSP_STATUS_TRANSPORT, "Unsupported transport" },
50  { RTSP_STATUS_INTERNAL, "Internal Server Error" },
51  { RTSP_STATUS_SERVICE, "Service Unavailable" },
52  { RTSP_STATUS_VERSION, "RTSP Version not supported" },
53  { 0, "NULL" }
54 };
55 
57 {
58  RTSPState *rt = s->priv_data;
59 
60  if (!(rt->rtsp_flags & RTSP_FLAG_LISTEN))
61  ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
62 
66  rt->real_setup = NULL;
68  return 0;
69 }
70 
71 static inline int read_line(AVFormatContext *s, char *rbuf, const int rbufsize,
72  int *rbuflen)
73 {
74  RTSPState *rt = s->priv_data;
75  int idx = 0;
76  int ret = 0;
77  *rbuflen = 0;
78 
79  do {
80  ret = ffurl_read_complete(rt->rtsp_hd, rbuf + idx, 1);
81  if (ret <= 0)
82  return ret ? ret : AVERROR_EOF;
83  if (rbuf[idx] == '\r') {
84  /* Ignore */
85  } else if (rbuf[idx] == '\n') {
86  rbuf[idx] = '\0';
87  *rbuflen = idx;
88  return 0;
89  } else
90  idx++;
91  } while (idx < rbufsize);
92  av_log(s, AV_LOG_ERROR, "Message too long\n");
93  return AVERROR(EIO);
94 }
95 
97  const char *extracontent, uint16_t seq)
98 {
99  RTSPState *rt = s->priv_data;
100  char message[4096];
101  int index = 0;
102  while (status_messages[index].code) {
103  if (status_messages[index].code == code) {
104  snprintf(message, sizeof(message), "RTSP/1.0 %d %s\r\n",
105  code, status_messages[index].message);
106  break;
107  }
108  index++;
109  }
110  if (!status_messages[index].code)
111  return AVERROR(EINVAL);
112  av_strlcatf(message, sizeof(message), "CSeq: %d\r\n", seq);
113  av_strlcatf(message, sizeof(message), "Server: %s\r\n", LIBAVFORMAT_IDENT);
114  if (extracontent)
115  av_strlcat(message, extracontent, sizeof(message));
116  av_strlcat(message, "\r\n", sizeof(message));
117  av_log(s, AV_LOG_TRACE, "Sending response:\n%s", message);
118  ffurl_write(rt->rtsp_hd_out, message, strlen(message));
119 
120  return 0;
121 }
122 
123 static inline int check_sessionid(AVFormatContext *s,
124  RTSPMessageHeader *request)
125 {
126  RTSPState *rt = s->priv_data;
127  unsigned char *session_id = rt->session_id;
128  if (!session_id[0]) {
129  av_log(s, AV_LOG_WARNING, "There is no session-id at the moment\n");
130  return 0;
131  }
132  if (strcmp(session_id, request->session_id)) {
133  av_log(s, AV_LOG_ERROR, "Unexpected session-id %s\n",
134  request->session_id);
137  }
138  return 0;
139 }
140 
142  RTSPMessageHeader *request,
143  const char *method)
144 {
145  RTSPState *rt = s->priv_data;
146  char rbuf[1024];
147  int rbuflen, ret;
148  do {
149  ret = read_line(s, rbuf, sizeof(rbuf), &rbuflen);
150  if (ret)
151  return ret;
152  if (rbuflen > 1) {
153  av_log(s, AV_LOG_TRACE, "Parsing[%d]: %s\n", rbuflen, rbuf);
154  ff_rtsp_parse_line(s, request, rbuf, rt, method);
155  }
156  } while (rbuflen > 0);
157  if (request->seq != rt->seq + 1) {
158  av_log(s, AV_LOG_ERROR, "Unexpected Sequence number %d\n",
159  request->seq);
160  return AVERROR(EINVAL);
161  }
162  if (rt->session_id[0] && strcmp(method, "OPTIONS")) {
163  ret = check_sessionid(s, request);
164  if (ret)
165  return ret;
166  }
167 
168  return 0;
169 }
170 
172 {
173  RTSPState *rt = s->priv_data;
174  RTSPMessageHeader request = { 0 };
175  char sdp[4096];
176  int ret;
177 
178  ret = rtsp_read_request(s, &request, "ANNOUNCE");
179  if (ret)
180  return ret;
181  rt->seq++;
182  if (strcmp(request.content_type, "application/sdp")) {
183  av_log(s, AV_LOG_ERROR, "Unexpected content type %s\n",
184  request.content_type);
187  }
188  if (request.content_length && request.content_length < sizeof(sdp) - 1) {
189  /* Read SDP */
190  if (ffurl_read_complete(rt->rtsp_hd, sdp, request.content_length)
191  < request.content_length) {
192  av_log(s, AV_LOG_ERROR,
193  "Unable to get complete SDP Description in ANNOUNCE\n");
195  return AVERROR(EIO);
196  }
197  sdp[request.content_length] = '\0';
198  av_log(s, AV_LOG_VERBOSE, "SDP: %s\n", sdp);
199  ret = ff_sdp_parse(s, sdp);
200  if (ret)
201  return ret;
202  rtsp_send_reply(s, RTSP_STATUS_OK, NULL, request.seq);
203  return 0;
204  }
205  av_log(s, AV_LOG_ERROR,
206  "Content-Length header value exceeds sdp allocated buffer (4KB)\n");
208  "Content-Length exceeds buffer size", request.seq);
209  return AVERROR(EIO);
210 }
211 
213 {
214  RTSPState *rt = s->priv_data;
215  RTSPMessageHeader request = { 0 };
216  int ret = 0;
217 
218  /* Parsing headers */
219  ret = rtsp_read_request(s, &request, "OPTIONS");
220  if (ret)
221  return ret;
222  rt->seq++;
223  /* Send Reply */
225  "Public: ANNOUNCE, PAUSE, SETUP, TEARDOWN, RECORD\r\n",
226  request.seq);
227  return 0;
228 }
229 
230 static int rtsp_read_setup(AVFormatContext *s, char* host, char *controlurl)
231 {
232  RTSPState *rt = s->priv_data;
233  RTSPMessageHeader request = { 0 };
234  int ret = 0;
235  char url[1024];
236  RTSPStream *rtsp_st;
237  char responseheaders[1024];
238  int localport = -1;
239  int transportidx = 0;
240  int streamid = 0;
241 
242  ret = rtsp_read_request(s, &request, "SETUP");
243  if (ret)
244  return ret;
245  rt->seq++;
246  if (!request.nb_transports) {
247  av_log(s, AV_LOG_ERROR, "No transport defined in SETUP\n");
248  return AVERROR_INVALIDDATA;
249  }
250  for (transportidx = 0; transportidx < request.nb_transports;
251  transportidx++) {
252  if (!request.transports[transportidx].mode_record ||
253  (request.transports[transportidx].lower_transport !=
255  request.transports[transportidx].lower_transport !=
257  av_log(s, AV_LOG_ERROR, "mode=record/receive not set or transport"
258  " protocol not supported (yet)\n");
259  return AVERROR_INVALIDDATA;
260  }
261  }
262  if (request.nb_transports > 1)
263  av_log(s, AV_LOG_WARNING, "More than one transport not supported, "
264  "using first of all\n");
265  for (streamid = 0; streamid < rt->nb_rtsp_streams; streamid++) {
266  if (!strcmp(rt->rtsp_streams[streamid]->control_url,
267  controlurl))
268  break;
269  }
270  if (streamid == rt->nb_rtsp_streams) {
271  av_log(s, AV_LOG_ERROR, "Unable to find requested track\n");
273  }
274  rtsp_st = rt->rtsp_streams[streamid];
275  localport = rt->rtp_port_min;
276 
279  if ((ret = ff_rtsp_open_transport_ctx(s, rtsp_st))) {
281  return ret;
282  }
283  rtsp_st->interleaved_min = request.transports[0].interleaved_min;
284  rtsp_st->interleaved_max = request.transports[0].interleaved_max;
285  snprintf(responseheaders, sizeof(responseheaders), "Transport: "
286  "RTP/AVP/TCP;unicast;mode=receive;interleaved=%d-%d"
287  "\r\n", request.transports[0].interleaved_min,
288  request.transports[0].interleaved_max);
289  } else {
290  do {
292  char buf[256];
293  snprintf(buf, sizeof(buf), "%d", rt->buffer_size);
294  av_dict_set(&opts, "buffer_size", buf, 0);
295  ff_url_join(url, sizeof(url), "rtp", NULL, host, localport, NULL);
296  av_log(s, AV_LOG_TRACE, "Opening: %s", url);
298  &s->interrupt_callback, &opts,
300  av_dict_free(&opts);
301  if (ret)
302  localport += 2;
303  } while (ret || localport > rt->rtp_port_max);
304  if (localport > rt->rtp_port_max) {
306  return ret;
307  }
308 
309  av_log(s, AV_LOG_TRACE, "Listening on: %d",
311  if ((ret = ff_rtsp_open_transport_ctx(s, rtsp_st))) {
313  return ret;
314  }
315 
316  localport = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
317  snprintf(responseheaders, sizeof(responseheaders), "Transport: "
318  "RTP/AVP/UDP;unicast;mode=receive;source=%s;"
319  "client_port=%d-%d;server_port=%d-%d\r\n",
320  host, request.transports[0].client_port_min,
321  request.transports[0].client_port_max, localport,
322  localport + 1);
323  }
324 
325  /* Establish sessionid if not previously set */
326  /* Put this in a function? */
327  /* RFC 2326: session id must be at least 8 digits */
328  while (strlen(rt->session_id) < 8)
329  av_strlcatf(rt->session_id, 512, "%u", av_get_random_seed());
330 
331  av_strlcatf(responseheaders, sizeof(responseheaders), "Session: %s\r\n",
332  rt->session_id);
333  /* Send Reply */
334  rtsp_send_reply(s, RTSP_STATUS_OK, responseheaders, request.seq);
335 
336  rt->state = RTSP_STATE_PAUSED;
337  return 0;
338 }
339 
341 {
342  RTSPState *rt = s->priv_data;
343  RTSPMessageHeader request = { 0 };
344  int ret = 0;
345  char responseheaders[1024];
346 
347  ret = rtsp_read_request(s, &request, "RECORD");
348  if (ret)
349  return ret;
350  ret = check_sessionid(s, &request);
351  if (ret)
352  return ret;
353  rt->seq++;
354  snprintf(responseheaders, sizeof(responseheaders), "Session: %s\r\n",
355  rt->session_id);
356  rtsp_send_reply(s, RTSP_STATUS_OK, responseheaders, request.seq);
357 
359  return 0;
360 }
361 
362 static inline int parse_command_line(AVFormatContext *s, const char *line,
363  int linelen, char *uri, int urisize,
364  char *method, int methodsize,
365  enum RTSPMethod *methodcode)
366 {
367  RTSPState *rt = s->priv_data;
368  const char *linept, *searchlinept;
369  linept = strchr(line, ' ');
370 
371  if (!linept) {
372  av_log(s, AV_LOG_ERROR, "Error parsing method string\n");
373  return AVERROR_INVALIDDATA;
374  }
375 
376  if (linept - line > methodsize - 1) {
377  av_log(s, AV_LOG_ERROR, "Method string too long\n");
378  return AVERROR(EIO);
379  }
380  memcpy(method, line, linept - line);
381  method[linept - line] = '\0';
382  linept++;
383  if (!strcmp(method, "ANNOUNCE"))
384  *methodcode = ANNOUNCE;
385  else if (!strcmp(method, "OPTIONS"))
386  *methodcode = OPTIONS;
387  else if (!strcmp(method, "RECORD"))
388  *methodcode = RECORD;
389  else if (!strcmp(method, "SETUP"))
390  *methodcode = SETUP;
391  else if (!strcmp(method, "PAUSE"))
392  *methodcode = PAUSE;
393  else if (!strcmp(method, "TEARDOWN"))
394  *methodcode = TEARDOWN;
395  else
396  *methodcode = UNKNOWN;
397  /* Check method with the state */
398  if (rt->state == RTSP_STATE_IDLE) {
399  if ((*methodcode != ANNOUNCE) && (*methodcode != OPTIONS)) {
400  av_log(s, AV_LOG_ERROR, "Unexpected command in Idle State %s\n",
401  line);
403  }
404  } else if (rt->state == RTSP_STATE_PAUSED) {
405  if ((*methodcode != OPTIONS) && (*methodcode != RECORD)
406  && (*methodcode != SETUP)) {
407  av_log(s, AV_LOG_ERROR, "Unexpected command in Paused State %s\n",
408  line);
410  }
411  } else if (rt->state == RTSP_STATE_STREAMING) {
412  if ((*methodcode != PAUSE) && (*methodcode != OPTIONS)
413  && (*methodcode != TEARDOWN)) {
414  av_log(s, AV_LOG_ERROR, "Unexpected command in Streaming State"
415  " %s\n", line);
417  }
418  } else {
419  av_log(s, AV_LOG_ERROR, "Unexpected State [%d]\n", rt->state);
420  return AVERROR_BUG;
421  }
422 
423  searchlinept = strchr(linept, ' ');
424  if (!searchlinept) {
425  av_log(s, AV_LOG_ERROR, "Error parsing message URI\n");
426  return AVERROR_INVALIDDATA;
427  }
428  if (searchlinept - linept > urisize - 1) {
429  av_log(s, AV_LOG_ERROR, "uri string length exceeded buffer size\n");
430  return AVERROR(EIO);
431  }
432  memcpy(uri, linept, searchlinept - linept);
433  uri[searchlinept - linept] = '\0';
434  if (strcmp(rt->control_uri, uri)) {
435  char host[128], path[512], auth[128];
436  int port;
437  char ctl_host[128], ctl_path[512], ctl_auth[128];
438  int ctl_port;
439  av_url_split(NULL, 0, auth, sizeof(auth), host, sizeof(host), &port,
440  path, sizeof(path), uri);
441  av_url_split(NULL, 0, ctl_auth, sizeof(ctl_auth), ctl_host,
442  sizeof(ctl_host), &ctl_port, ctl_path, sizeof(ctl_path),
443  rt->control_uri);
444  if (strcmp(host, ctl_host))
445  av_log(s, AV_LOG_INFO, "Host %s differs from expected %s\n",
446  host, ctl_host);
447  if (strcmp(path, ctl_path) && *methodcode != SETUP)
448  av_log(s, AV_LOG_WARNING, "WARNING: Path %s differs from expected"
449  " %s\n", path, ctl_path);
450  if (*methodcode == ANNOUNCE) {
451  av_log(s, AV_LOG_INFO,
452  "Updating control URI to %s\n", uri);
453  av_strlcpy(rt->control_uri, uri, sizeof(rt->control_uri));
454  }
455  }
456 
457  linept = searchlinept + 1;
458  if (!av_strstart(linept, "RTSP/1.0", NULL)) {
459  av_log(s, AV_LOG_ERROR, "Error parsing protocol or version\n");
461  }
462  return 0;
463 }
464 
466 {
467  RTSPState *rt = s->priv_data;
468  unsigned char rbuf[4096];
469  unsigned char method[10];
470  char uri[500];
471  int ret;
472  int rbuflen = 0;
473  RTSPMessageHeader request = { 0 };
474  enum RTSPMethod methodcode;
475 
476  ret = read_line(s, rbuf, sizeof(rbuf), &rbuflen);
477  if (ret < 0)
478  return ret;
479  ret = parse_command_line(s, rbuf, rbuflen, uri, sizeof(uri), method,
480  sizeof(method), &methodcode);
481  if (ret) {
482  av_log(s, AV_LOG_ERROR, "RTSP: Unexpected Command\n");
483  return ret;
484  }
485 
486  ret = rtsp_read_request(s, &request, method);
487  if (ret)
488  return ret;
489  rt->seq++;
490  if (methodcode == PAUSE) {
491  rt->state = RTSP_STATE_PAUSED;
492  ret = rtsp_send_reply(s, RTSP_STATUS_OK, NULL , request.seq);
493  // TODO: Missing date header in response
494  } else if (methodcode == OPTIONS) {
496  "Public: ANNOUNCE, PAUSE, SETUP, TEARDOWN, "
497  "RECORD\r\n", request.seq);
498  } else if (methodcode == TEARDOWN) {
499  rt->state = RTSP_STATE_IDLE;
500  ret = rtsp_send_reply(s, RTSP_STATUS_OK, NULL , request.seq);
501  return 0;
502  }
503  return ret;
504 }
505 
507 {
508  RTSPState *rt = s->priv_data;
509  RTSPMessageHeader reply1, *reply = &reply1;
510  int i;
511  char cmd[1024];
512 
513  av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
514  rt->nb_byes = 0;
515 
517  for (i = 0; i < rt->nb_rtsp_streams; i++) {
518  RTSPStream *rtsp_st = rt->rtsp_streams[i];
519  /* Try to initialize the connection state in a
520  * potential NAT router by sending dummy packets.
521  * RTP/RTCP dummy packets are used for RDT, too.
522  */
523  if (rtsp_st->rtp_handle &&
524  !(rt->server_type == RTSP_SERVER_WMS && i > 1))
526  }
527  }
528  if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
529  if (rt->transport == RTSP_TRANSPORT_RTP) {
530  for (i = 0; i < rt->nb_rtsp_streams; i++) {
531  RTSPStream *rtsp_st = rt->rtsp_streams[i];
532  RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
533  if (!rtpctx)
534  continue;
538  rtpctx->base_timestamp = 0;
539  rtpctx->timestamp = 0;
540  rtpctx->unwrapped_timestamp = 0;
541  rtpctx->rtcp_ts_offset = 0;
542  }
543  }
544  if (rt->state == RTSP_STATE_PAUSED) {
545  cmd[0] = 0;
546  } else {
547  snprintf(cmd, sizeof(cmd),
548  "Range: npt=%"PRId64".%03"PRId64"-\r\n",
550  rt->seek_timestamp / (AV_TIME_BASE / 1000) % 1000);
551  }
552  ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
553  if (reply->status_code != RTSP_STATUS_OK) {
554  return ff_rtsp_averror(reply->status_code, -1);
555  }
556  if (rt->transport == RTSP_TRANSPORT_RTP &&
557  reply->range_start != AV_NOPTS_VALUE) {
558  for (i = 0; i < rt->nb_rtsp_streams; i++) {
559  RTSPStream *rtsp_st = rt->rtsp_streams[i];
560  RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
561  AVStream *st = NULL;
562  if (!rtpctx || rtsp_st->stream_index < 0)
563  continue;
564 
565  st = s->streams[rtsp_st->stream_index];
566  rtpctx->range_start_offset =
568  st->time_base);
569  }
570  }
571  }
573  return 0;
574 }
575 
576 /* pause the stream */
578 {
579  RTSPState *rt = s->priv_data;
580  RTSPMessageHeader reply1, *reply = &reply1;
581 
582  if (rt->state != RTSP_STATE_STREAMING)
583  return 0;
584  else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
585  ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
586  if (reply->status_code != RTSP_STATUS_OK) {
587  return ff_rtsp_averror(reply->status_code, -1);
588  }
589  }
590  rt->state = RTSP_STATE_PAUSED;
591  return 0;
592 }
593 
595 {
596  RTSPState *rt = s->priv_data;
597  char cmd[1024];
598  unsigned char *content = NULL;
599  int ret;
600 
601  /* describe the stream */
602  snprintf(cmd, sizeof(cmd),
603  "Accept: application/sdp\r\n");
604  if (rt->server_type == RTSP_SERVER_REAL) {
605  /**
606  * The Require: attribute is needed for proper streaming from
607  * Realmedia servers.
608  */
609  av_strlcat(cmd,
610  "Require: com.real.retain-entity-for-setup\r\n",
611  sizeof(cmd));
612  }
613  ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
614  if (reply->status_code != RTSP_STATUS_OK) {
615  av_freep(&content);
617  }
618  if (!content)
619  return AVERROR_INVALIDDATA;
620 
621  av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", content);
622  /* now we got the SDP description, we parse it */
623  ret = ff_sdp_parse(s, (const char *)content);
624  av_freep(&content);
625  if (ret < 0)
626  return ret;
627 
628  return 0;
629 }
630 
632 {
633  RTSPState *rt = s->priv_data;
634  char proto[128], host[128], path[512], auth[128];
635  char uri[500];
636  int port;
637  int default_port = RTSP_DEFAULT_PORT;
638  char tcpname[500];
639  const char *lower_proto = "tcp";
640  unsigned char rbuf[4096];
641  unsigned char method[10];
642  int rbuflen = 0;
643  int ret;
644  enum RTSPMethod methodcode;
645 
646  /* extract hostname and port */
647  av_url_split(proto, sizeof(proto), auth, sizeof(auth), host, sizeof(host),
648  &port, path, sizeof(path), s->filename);
649 
650  /* ff_url_join. No authorization by now (NULL) */
651  ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL, host,
652  port, "%s", path);
653 
654  if (!strcmp(proto, "rtsps")) {
655  lower_proto = "tls";
656  default_port = RTSPS_DEFAULT_PORT;
657  }
658 
659  if (port < 0)
660  port = default_port;
661 
662  /* Create TCP connection */
663  ff_url_join(tcpname, sizeof(tcpname), lower_proto, NULL, host, port,
664  "?listen&listen_timeout=%d", rt->initial_timeout * 1000);
665 
666  if (ret = ffurl_open_whitelist(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
669  av_log(s, AV_LOG_ERROR, "Unable to open RTSP for listening\n");
670  return ret;
671  }
672  rt->state = RTSP_STATE_IDLE;
673  rt->rtsp_hd_out = rt->rtsp_hd;
674  for (;;) { /* Wait for incoming RTSP messages */
675  ret = read_line(s, rbuf, sizeof(rbuf), &rbuflen);
676  if (ret < 0)
677  return ret;
678  ret = parse_command_line(s, rbuf, rbuflen, uri, sizeof(uri), method,
679  sizeof(method), &methodcode);
680  if (ret) {
681  av_log(s, AV_LOG_ERROR, "RTSP: Unexpected Command\n");
682  return ret;
683  }
684 
685  if (methodcode == ANNOUNCE) {
686  ret = rtsp_read_announce(s);
687  rt->state = RTSP_STATE_PAUSED;
688  } else if (methodcode == OPTIONS) {
689  ret = rtsp_read_options(s);
690  } else if (methodcode == RECORD) {
691  ret = rtsp_read_record(s);
692  if (!ret)
693  return 0; // We are ready for streaming
694  } else if (methodcode == SETUP)
695  ret = rtsp_read_setup(s, host, uri);
696  if (ret) {
697  ffurl_close(rt->rtsp_hd);
698  return AVERROR_INVALIDDATA;
699  }
700  }
701 }
702 
703 static int rtsp_probe(AVProbeData *p)
704 {
705  if (
707  av_strstart(p->filename, "rtsps:", NULL) ||
708 #endif
709  av_strstart(p->filename, "rtsp:", NULL))
710  return AVPROBE_SCORE_MAX;
711  return 0;
712 }
713 
715 {
716  RTSPState *rt = s->priv_data;
717  int ret;
718 
719  if (rt->initial_timeout > 0)
721 
722  if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
723  ret = rtsp_listen(s);
724  if (ret)
725  return ret;
726  } else {
727  ret = ff_rtsp_connect(s);
728  if (ret)
729  return ret;
730 
731  rt->real_setup_cache = !s->nb_streams ? NULL :
732  av_mallocz_array(s->nb_streams, 2 * sizeof(*rt->real_setup_cache));
733  if (!rt->real_setup_cache && s->nb_streams)
734  return AVERROR(ENOMEM);
735  rt->real_setup = rt->real_setup_cache + s->nb_streams;
736 
737  if (rt->initial_pause) {
738  /* do not start immediately */
739  } else {
740  if ((ret = rtsp_read_play(s)) < 0) {
743  return ret;
744  }
745  }
746  }
747 
748  return 0;
749 }
750 
752  uint8_t *buf, int buf_size)
753 {
754  RTSPState *rt = s->priv_data;
755  int id, len, i, ret;
756  RTSPStream *rtsp_st;
757 
758  av_log(s, AV_LOG_TRACE, "tcp_read_packet:\n");
759 redo:
760  for (;;) {
761  RTSPMessageHeader reply;
762 
763  ret = ff_rtsp_read_reply(s, &reply, NULL, 1, NULL);
764  if (ret < 0)
765  return ret;
766  if (ret == 1) /* received '$' */
767  break;
768  /* XXX: parse message */
769  if (rt->state != RTSP_STATE_STREAMING)
770  return 0;
771  }
772  ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
773  if (ret != 3)
774  return -1;
775  id = buf[0];
776  len = AV_RB16(buf + 1);
777  av_log(s, AV_LOG_TRACE, "id=%d len=%d\n", id, len);
778  if (len > buf_size || len < 8)
779  goto redo;
780  /* get the data */
781  ret = ffurl_read_complete(rt->rtsp_hd, buf, len);
782  if (ret != len)
783  return -1;
784  if (rt->transport == RTSP_TRANSPORT_RDT &&
785  ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
786  return -1;
787 
788  /* find the matching stream */
789  for (i = 0; i < rt->nb_rtsp_streams; i++) {
790  rtsp_st = rt->rtsp_streams[i];
791  if (id >= rtsp_st->interleaved_min &&
792  id <= rtsp_st->interleaved_max)
793  goto found;
794  }
795  goto redo;
796 found:
797  *prtsp_st = rtsp_st;
798  return len;
799 }
800 
802 {
803  RTSPState *rt = s->priv_data;
804  char host[1024];
805  int port;
806 
807  av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port, NULL, 0,
808  s->filename);
809  ff_rtsp_undo_setup(s, 0);
811  rt->real_challenge);
812 }
813 
815 {
816  RTSPState *rt = s->priv_data;
817  int ret;
818  RTSPMessageHeader reply1, *reply = &reply1;
819  char cmd[1024];
820 
821 retry:
822  if (rt->server_type == RTSP_SERVER_REAL) {
823  int i;
824 
825  for (i = 0; i < s->nb_streams; i++)
826  rt->real_setup[i] = s->streams[i]->discard;
827 
828  if (!rt->need_subscription) {
829  if (memcmp (rt->real_setup, rt->real_setup_cache,
830  sizeof(enum AVDiscard) * s->nb_streams)) {
831  snprintf(cmd, sizeof(cmd),
832  "Unsubscribe: %s\r\n",
833  rt->last_subscription);
834  ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
835  cmd, reply, NULL);
836  if (reply->status_code != RTSP_STATUS_OK)
838  rt->need_subscription = 1;
839  }
840  }
841 
842  if (rt->need_subscription) {
843  int r, rule_nr, first = 1;
844 
845  memcpy(rt->real_setup_cache, rt->real_setup,
846  sizeof(enum AVDiscard) * s->nb_streams);
847  rt->last_subscription[0] = 0;
848 
849  snprintf(cmd, sizeof(cmd),
850  "Subscribe: ");
851  for (i = 0; i < rt->nb_rtsp_streams; i++) {
852  rule_nr = 0;
853  for (r = 0; r < s->nb_streams; r++) {
854  if (s->streams[r]->id == i) {
855  if (s->streams[r]->discard != AVDISCARD_ALL) {
856  if (!first)
857  av_strlcat(rt->last_subscription, ",",
858  sizeof(rt->last_subscription));
860  rt->last_subscription,
861  sizeof(rt->last_subscription), i, rule_nr);
862  first = 0;
863  }
864  rule_nr++;
865  }
866  }
867  }
868  av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
869  ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
870  cmd, reply, NULL);
871  if (reply->status_code != RTSP_STATUS_OK)
873  rt->need_subscription = 0;
874 
875  if (rt->state == RTSP_STATE_STREAMING)
876  rtsp_read_play (s);
877  }
878  }
879 
880  ret = ff_rtsp_fetch_packet(s, pkt);
881  if (ret < 0) {
882  if (ret == AVERROR(ETIMEDOUT) && !rt->packets) {
885  RTSPMessageHeader reply1, *reply = &reply1;
886  av_log(s, AV_LOG_WARNING, "UDP timeout, retrying with TCP\n");
887  if (rtsp_read_pause(s) != 0)
888  return -1;
889  // TEARDOWN is required on Real-RTSP, but might make
890  // other servers close the connection.
891  if (rt->server_type == RTSP_SERVER_REAL)
892  ff_rtsp_send_cmd(s, "TEARDOWN", rt->control_uri, NULL,
893  reply, NULL);
894  rt->session_id[0] = '\0';
895  if (resetup_tcp(s) == 0) {
896  rt->state = RTSP_STATE_IDLE;
897  rt->need_subscription = 1;
898  if (rtsp_read_play(s) != 0)
899  return -1;
900  goto retry;
901  }
902  }
903  }
904  return ret;
905  }
906  rt->packets++;
907 
908  if (!(rt->rtsp_flags & RTSP_FLAG_LISTEN)) {
909  /* send dummy request to keep TCP connection alive */
910  if ((av_gettime_relative() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2 ||
911  rt->auth_state.stale) {
912  if (rt->server_type == RTSP_SERVER_WMS ||
913  (rt->server_type != RTSP_SERVER_REAL &&
915  ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
916  } else {
917  ff_rtsp_send_cmd_async(s, "OPTIONS", rt->control_uri, NULL);
918  }
919  /* The stale flag should be reset when creating the auth response in
920  * ff_rtsp_send_cmd_async, but reset it here just in case we never
921  * called the auth code (if we didn't have any credentials set). */
922  rt->auth_state.stale = 0;
923  }
924  }
925 
926  return 0;
927 }
928 
929 static int rtsp_read_seek(AVFormatContext *s, int stream_index,
930  int64_t timestamp, int flags)
931 {
932  RTSPState *rt = s->priv_data;
933  int ret;
934 
935  rt->seek_timestamp = av_rescale_q(timestamp,
936  s->streams[stream_index]->time_base,
938  switch(rt->state) {
939  default:
940  case RTSP_STATE_IDLE:
941  break;
943  if ((ret = rtsp_read_pause(s)) != 0)
944  return ret;
946  if ((ret = rtsp_read_play(s)) != 0)
947  return ret;
948  break;
949  case RTSP_STATE_PAUSED:
950  rt->state = RTSP_STATE_IDLE;
951  break;
952  }
953  return 0;
954 }
955 
956 static const AVClass rtsp_demuxer_class = {
957  .class_name = "RTSP demuxer",
958  .item_name = av_default_item_name,
959  .option = ff_rtsp_options,
960  .version = LIBAVUTIL_VERSION_INT,
961 };
962 
964  .name = "rtsp",
965  .long_name = NULL_IF_CONFIG_SMALL("RTSP input"),
966  .priv_data_size = sizeof(RTSPState),
972  .flags = AVFMT_NOFILE,
973  .read_play = rtsp_read_play,
974  .read_pause = rtsp_read_pause,
975  .priv_class = &rtsp_demuxer_class,
976 };
int interleaved_min
interleave ids, if TCP transport; each TCP/RTSP data packet starts with a '$', stream length and stre...
Definition: rtsp.h:93
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:4607
int rtp_port_min
Minimum and maximum local UDP ports.
Definition: rtsp.h:387
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
Realmedia Data Transport.
Definition: rtsp.h:58
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static int rtsp_read_options(AVFormatContext *s)
Definition: rtspdec.c:212
int ff_rtp_get_local_rtp_port(URLContext *h)
Return the local rtp port used by the RTP connection.
Definition: rtpproto.c:627
int ffurl_open_whitelist(URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options, const char *whitelist, const char *blacklist, URLContext *parent)
Create an URLContext for accessing to the resource indicated by url, and open it. ...
Definition: avio.c:309
void ff_rtp_send_punch_packets(URLContext *rtp_handle)
Send a dummy packet on both port pairs to set up the connection state in potential NAT routers...
Definition: rtpdec.c:386
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1605
static const struct RTSPStatusMessage status_messages[]
char content_type[64]
Content type header.
Definition: rtsp.h:187
static int rtsp_read_request(AVFormatContext *s, RTSPMessageHeader *request, const char *method)
Definition: rtspdec.c:141
static int rtsp_read_close(AVFormatContext *s)
Definition: rtspdec.c:56
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * filename
Definition: avformat.h:462
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:317
static int rtsp_read_header(AVFormatContext *s)
Definition: rtspdec.c:714
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:421
#define RTSP_DEFAULT_PORT
Definition: rtsp.h:72
Windows Media server.
Definition: rtsp.h:209
int64_t range_start_offset
Definition: rtpdec.h:159
int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
Open RTSP transport context.
Definition: rtsp.c:796
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:703
enum AVDiscard * real_setup
current stream setup.
Definition: rtsp.h:296
static int resetup_tcp(AVFormatContext *s)
Definition: rtspdec.c:801
enum AVDiscard * real_setup_cache
stream setup during the last frame read.
Definition: rtsp.h:292
int mode_record
transport set to record data
Definition: rtsp.h:112
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:594
void ff_network_close(void)
Definition: network.c:102
UDP/unicast.
Definition: rtsp.h:38
int seq
sequence number
Definition: rtsp.h:144
initialized and sending/receiving data
Definition: rtsp.h:197
RTSPMethod
Definition: rtspcodes.h:129
char real_challenge[64]
the "RealChallenge1:" field from the server
Definition: rtsp.h:270
static int rtsp_read_pause(AVFormatContext *s)
Definition: rtspdec.c:577
const char * message
Definition: rtspdec.c:40
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:751
discard all
Definition: avcodec.h:825
static AVPacket pkt
uint64_t last_rtcp_ntp_time
Definition: rtpdec.h:178
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
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:87
#define RTSP_FLAG_LISTEN
Wait for incoming connections.
Definition: rtsp.h:418
char session_id[512]
copy of RTSPMessageHeader->session_id, i.e.
Definition: rtsp.h:245
int64_t seek_timestamp
the seek value requested when calling av_seek_frame().
Definition: rtsp.h:239
static int rtsp_send_reply(AVFormatContext *s, enum RTSPStatusCode code, const char *extracontent, uint16_t seq)
Definition: rtspdec.c:96
static int check_sessionid(AVFormatContext *s, RTSPMessageHeader *request)
Definition: rtspdec.c:123
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:121
This describes the server response to each RTSP command.
Definition: rtsp.h:127
Definition: ftp.c:34
enum RTSPStatusCode code
Definition: rtspdec.c:39
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:142
Format I/O context.
Definition: avformat.h:1349
int ff_rtsp_connect(AVFormatContext *s)
Connect to the RTSP server and set up the individual media streams.
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:72
uint64_t first_rtcp_ntp_time
Definition: rtpdec.h:180
static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rtspdec.c:814
int get_parameter_supported
Whether the server supports the GET_PARAMETER method.
Definition: rtsp.h:359
Standards-compliant RTP.
Definition: rtsp.h:57
uint8_t
char session_id[512]
the "Session:" field.
Definition: rtsp.h:148
miscellaneous OS support macros and functions.
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
void ff_rtp_reset_packet_queue(RTPDemuxContext *s)
Definition: rtpdec.c:694
int id
Format-specific stream ID.
Definition: avformat.h:896
int initial_timeout
Timeout to wait for incoming connections.
Definition: rtsp.h:392
static int read_line(AVFormatContext *s, char *rbuf, const int rbufsize, int *rbuflen)
Definition: rtspdec.c:71
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1417
URLContext * rtsp_hd_out
Additional output handle, used when input and output are done separately, eg for HTTP tunneling...
Definition: rtsp.h:328
static int rtsp_read_setup(AVFormatContext *s, char *host, char *controlurl)
Definition: rtspdec.c:230
#define AVERROR_PROTOCOL_NOT_FOUND
Protocol not found.
Definition: error.h:63
Describe a single stream, as identified by a single m= line block in the SDP content.
Definition: rtsp.h:435
char * protocol_whitelist
',' separated list of allowed protocols.
Definition: avformat.h:1887
static int flags
Definition: log.c:57
enum RTSPStatusCode status_code
response code from server
Definition: rtsp.h:131
#define AVERROR_EOF
End of file.
Definition: error.h:55
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
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:506
static int ff_rtsp_averror(enum RTSPStatusCode status_code, int default_averror)
Definition: rtspcodes.h:144
#define av_log(a,...)
int nb_transports
number of items in the 'transports' variable below
Definition: rtsp.h:134
void ff_rtsp_parse_line(AVFormatContext *s, RTSPMessageHeader *reply, const char *buf, RTSPState *rt, const char *method)
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
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:465
Private data for the RTSP demuxer.
Definition: rtsp.h:218
int64_t last_cmd_time
timestamp of the last RTSP command that we sent to the RTSP server.
Definition: rtsp.h:255
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int timeout
copy of RTSPMessageHeader->timeout, i.e.
Definition: rtsp.h:250
av_default_item_name
#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:179
const char * r
Definition: vf_curves.c:111
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
const AVOption ff_rtsp_options[]
Definition: rtsp.c:82
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
Definition: graph2dot.c:48
URLContext * rtsp_hd
Definition: rtsp.h:220
#define CONFIG_TLS_PROTOCOL
Definition: tls.h:29
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:229
int64_t rtcp_ts_offset
Definition: rtpdec.h:182
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:83
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:362
struct RTSPStream ** rtsp_streams
streams in this session
Definition: rtsp.h:225
static int rtsp_read_record(AVFormatContext *s)
Definition: rtspdec.c:340
uint32_t timestamp
Definition: rtpdec.h:155
int stream_index
corresponding stream index, if any.
Definition: rtsp.h:440
int seq
RTSP command sequence number.
Definition: rtsp.h:241
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1405
AVDictionary * opts
Definition: movenc.c:50
#define LIBAVFORMAT_IDENT
Definition: version.h:46
char filename[1024]
input or output filename
Definition: avformat.h:1425
int nb_rtsp_streams
number of items in the 'rtsp_streams' variable
Definition: rtsp.h:223
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
int content_length
length of the data following this header
Definition: rtsp.h:129
char last_subscription[1024]
the last value of the "SET_PARAMETER Subscribe:" RTSP command.
Definition: rtsp.h:301
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:509
Stream structure.
Definition: avformat.h:889
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
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:336
enum RTSPLowerTransport lower_transport
the negotiated network layer transport protocol; e.g.
Definition: rtsp.h:262
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
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:726
int rtp_port_max
Definition: rtsp.h:387
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
int64_t unwrapped_timestamp
Definition: rtpdec.h:158
enum RTSPTransport transport
the negotiated data/packet transport protocol; e.g.
Definition: rtsp.h:258
void * buf
Definition: avisynth_c.h:690
#define RTSPS_DEFAULT_PORT
Definition: rtsp.h:73
#define AVIO_FLAG_READ_WRITE
read-write pseudo flag
Definition: avio.h:624
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
int rtsp_flags
Various option flags for the RTSP muxer/demuxer.
Definition: rtsp.h:377
int client_port_max
Definition: rtsp.h:101
Describe the class of an AVClass context structure.
Definition: log.h:67
AVInputFormat ff_rtsp_demuxer
Definition: rtspdec.c:963
int index
Definition: gxfenc.c:89
static int rtsp_listen(AVFormatContext *s)
Definition: rtspdec.c:631
not initialized
Definition: rtsp.h:196
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:101
void ff_rtsp_close_streams(AVFormatContext *s)
Close and free all streams within the RTSP (de)muxer.
Definition: rtsp.c:760
#define snprintf
Definition: snprintf.h:34
int buffer_size
Definition: rtsp.h:410
This structure contains the data a format has to probe a file.
Definition: avformat.h:461
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:93
int interleaved_max
Definition: rtsp.h:93
int64_t av_gettime_relative(void)
Get the current time in microseconds since some unspecified starting point.
Definition: time.c:56
enum RTSPServerType server_type
brand of server that we're talking to; e.g.
Definition: rtsp.h:267
int ffurl_close(URLContext *h)
Definition: avio.c:467
RTSPStatusCode
RTSP handling.
Definition: rtspcodes.h:31
int64_t range_start
Time range of the streams that the server will stream.
Definition: rtsp.h:138
enum RTSPClientState state
indicator of whether we are currently receiving data from the server.
Definition: rtsp.h:231
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...
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:473
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:34
Main libavformat public API header.
static const AVClass rtsp_demuxer_class
Definition: rtspdec.c:956
if(ret< 0)
Definition: vf_mcdeint.c:282
initialized, requesting a seek
Definition: rtsp.h:199
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:478
int need_subscription
The following are used for Real stream selection.
Definition: rtsp.h:288
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:414
static int rtsp_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: rtspdec.c:929
uint32_t base_timestamp
Definition: rtpdec.h:156
initialized, but not receiving data
Definition: rtsp.h:198
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:61
TCP; interleaved in RTSP.
Definition: rtsp.h:39
HTTPAuthState auth_state
authentication state
Definition: rtsp.h:276
int len
char control_url[1024]
url for this stream (from SDP)
Definition: rtsp.h:446
void * priv_data
Format private data.
Definition: avformat.h:1377
#define AVERROR_STREAM_NOT_FOUND
Stream not found.
Definition: error.h:65
uint64_t packets
The number of returned packets.
Definition: rtsp.h:349
AVDiscard
Definition: avcodec.h:816
char * protocol_blacklist
',' separated list of disallowed protocols.
Definition: avformat.h:1922
Realmedia-style server.
Definition: rtsp.h:208
int lower_transport_mask
A mask with all requested transport methods.
Definition: rtsp.h:344
static int rtsp_read_announce(AVFormatContext *s)
Definition: rtspdec.c:171
#define av_freep(p)
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:664
unbuffered private I/O API
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:120
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:926
int interleaved_max
Definition: rtsp.h:444
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:952
enum AVCodecID id
int interleaved_min
interleave IDs; copies of RTSPTransportField->interleaved_min/max for the selected transport...
Definition: rtsp.h:444
This structure stores compressed data.
Definition: avcodec.h:1634
void ff_rtsp_close_connections(AVFormatContext *s)
Close all connection handles within the RTSP (de)muxer.
URLContext * rtp_handle
RTP stream handle (if UDP)
Definition: rtsp.h:436
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
void * transport_priv
RTP/RDT parse context if input, RTP AVFormatContext if output.
Definition: rtsp.h:437
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:101
int initial_pause
Do not begin to play the stream immediately.
Definition: rtsp.h:364