Libav
rtspdec.c
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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 "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 
141 static inline int rtsp_read_request(AVFormatContext *s,
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);
297  ret = ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
298  &s->interrupt_callback, &opts, rt->protocols, NULL);
299  av_dict_free(&opts);
300  if (ret)
301  localport += 2;
302  } while (ret || localport > rt->rtp_port_max);
303  if (localport > rt->rtp_port_max) {
305  return ret;
306  }
307 
308  av_log(s, AV_LOG_TRACE, "Listening on: %d",
310  if ((ret = ff_rtsp_open_transport_ctx(s, rtsp_st))) {
312  return ret;
313  }
314 
315  localport = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
316  snprintf(responseheaders, sizeof(responseheaders), "Transport: "
317  "RTP/AVP/UDP;unicast;mode=receive;source=%s;"
318  "client_port=%d-%d;server_port=%d-%d\r\n",
319  host, request.transports[0].client_port_min,
320  request.transports[0].client_port_max, localport,
321  localport + 1);
322  }
323 
324  /* Establish sessionid if not previously set */
325  /* Put this in a function? */
326  /* RFC 2326: session id must be at least 8 digits */
327  while (strlen(rt->session_id) < 8)
328  av_strlcatf(rt->session_id, 512, "%u", av_get_random_seed());
329 
330  av_strlcatf(responseheaders, sizeof(responseheaders), "Session: %s\r\n",
331  rt->session_id);
332  /* Send Reply */
333  rtsp_send_reply(s, RTSP_STATUS_OK, responseheaders, request.seq);
334 
335  rt->state = RTSP_STATE_PAUSED;
336  return 0;
337 }
338 
340 {
341  RTSPState *rt = s->priv_data;
342  RTSPMessageHeader request = { 0 };
343  int ret = 0;
344  char responseheaders[1024];
345 
346  ret = rtsp_read_request(s, &request, "RECORD");
347  if (ret)
348  return ret;
349  ret = check_sessionid(s, &request);
350  if (ret)
351  return ret;
352  rt->seq++;
353  snprintf(responseheaders, sizeof(responseheaders), "Session: %s\r\n",
354  rt->session_id);
355  rtsp_send_reply(s, RTSP_STATUS_OK, responseheaders, request.seq);
356 
358  return 0;
359 }
360 
361 static inline int parse_command_line(AVFormatContext *s, const char *line,
362  int linelen, char *uri, int urisize,
363  char *method, int methodsize,
364  enum RTSPMethod *methodcode)
365 {
366  RTSPState *rt = s->priv_data;
367  const char *linept, *searchlinept;
368  linept = strchr(line, ' ');
369 
370  if (!linept)
371  return AVERROR_INVALIDDATA;
372 
373  if (linept - line > methodsize - 1) {
374  av_log(s, AV_LOG_ERROR, "Method string too long\n");
375  return AVERROR(EIO);
376  }
377  memcpy(method, line, linept - line);
378  method[linept - line] = '\0';
379  linept++;
380  if (!strcmp(method, "ANNOUNCE"))
381  *methodcode = ANNOUNCE;
382  else if (!strcmp(method, "OPTIONS"))
383  *methodcode = OPTIONS;
384  else if (!strcmp(method, "RECORD"))
385  *methodcode = RECORD;
386  else if (!strcmp(method, "SETUP"))
387  *methodcode = SETUP;
388  else if (!strcmp(method, "PAUSE"))
389  *methodcode = PAUSE;
390  else if (!strcmp(method, "TEARDOWN"))
391  *methodcode = TEARDOWN;
392  else
393  *methodcode = UNKNOWN;
394  /* Check method with the state */
395  if (rt->state == RTSP_STATE_IDLE) {
396  if ((*methodcode != ANNOUNCE) && (*methodcode != OPTIONS)) {
397  av_log(s, AV_LOG_ERROR, "Unexpected command in Idle State %s\n",
398  line);
400  }
401  } else if (rt->state == RTSP_STATE_PAUSED) {
402  if ((*methodcode != OPTIONS) && (*methodcode != RECORD)
403  && (*methodcode != SETUP)) {
404  av_log(s, AV_LOG_ERROR, "Unexpected command in Paused State %s\n",
405  line);
407  }
408  } else if (rt->state == RTSP_STATE_STREAMING) {
409  if ((*methodcode != PAUSE) && (*methodcode != OPTIONS)
410  && (*methodcode != TEARDOWN)) {
411  av_log(s, AV_LOG_ERROR, "Unexpected command in Streaming State"
412  " %s\n", line);
414  }
415  } else {
416  av_log(s, AV_LOG_ERROR, "Unexpected State [%d]\n", rt->state);
417  return AVERROR_BUG;
418  }
419 
420  searchlinept = strchr(linept, ' ');
421  if (!searchlinept) {
422  av_log(s, AV_LOG_ERROR, "Error parsing message URI\n");
423  return AVERROR_INVALIDDATA;
424  }
425  if (searchlinept - linept > urisize - 1) {
426  av_log(s, AV_LOG_ERROR, "uri string length exceeded buffer size\n");
427  return AVERROR(EIO);
428  }
429  memcpy(uri, linept, searchlinept - linept);
430  uri[searchlinept - linept] = '\0';
431  if (strcmp(rt->control_uri, uri)) {
432  char host[128], path[512], auth[128];
433  int port;
434  char ctl_host[128], ctl_path[512], ctl_auth[128];
435  int ctl_port;
436  av_url_split(NULL, 0, auth, sizeof(auth), host, sizeof(host), &port,
437  path, sizeof(path), uri);
438  av_url_split(NULL, 0, ctl_auth, sizeof(ctl_auth), ctl_host,
439  sizeof(ctl_host), &ctl_port, ctl_path, sizeof(ctl_path),
440  rt->control_uri);
441  if (strcmp(host, ctl_host))
442  av_log(s, AV_LOG_INFO, "Host %s differs from expected %s\n",
443  host, ctl_host);
444  if (strcmp(path, ctl_path) && *methodcode != SETUP)
445  av_log(s, AV_LOG_WARNING, "WARNING: Path %s differs from expected"
446  " %s\n", path, ctl_path);
447  if (*methodcode == ANNOUNCE) {
448  av_log(s, AV_LOG_INFO,
449  "Updating control URI to %s\n", uri);
450  av_strlcpy(rt->control_uri, uri, sizeof(rt->control_uri));
451  }
452  }
453 
454  linept = searchlinept + 1;
455  if (!av_strstart(linept, "RTSP/1.0", NULL)) {
456  av_log(s, AV_LOG_ERROR, "Error parsing protocol or version\n");
458  }
459  return 0;
460 }
461 
463 {
464  RTSPState *rt = s->priv_data;
465  unsigned char rbuf[4096];
466  unsigned char method[10];
467  char uri[500];
468  int ret;
469  int rbuflen = 0;
470  RTSPMessageHeader request = { 0 };
471  enum RTSPMethod methodcode;
472 
473  ret = read_line(s, rbuf, sizeof(rbuf), &rbuflen);
474  if (ret < 0)
475  return ret;
476  ret = parse_command_line(s, rbuf, rbuflen, uri, sizeof(uri), method,
477  sizeof(method), &methodcode);
478  if (ret) {
479  av_log(s, AV_LOG_ERROR, "RTSP: Unexpected Command\n");
480  return ret;
481  }
482 
483  ret = rtsp_read_request(s, &request, method);
484  if (ret)
485  return ret;
486  rt->seq++;
487  if (methodcode == PAUSE) {
488  rt->state = RTSP_STATE_PAUSED;
489  ret = rtsp_send_reply(s, RTSP_STATUS_OK, NULL , request.seq);
490  // TODO: Missing date header in response
491  } else if (methodcode == OPTIONS) {
493  "Public: ANNOUNCE, PAUSE, SETUP, TEARDOWN, "
494  "RECORD\r\n", request.seq);
495  } else if (methodcode == TEARDOWN) {
496  rt->state = RTSP_STATE_IDLE;
497  ret = rtsp_send_reply(s, RTSP_STATUS_OK, NULL , request.seq);
498  return 0;
499  }
500  return ret;
501 }
502 
504 {
505  RTSPState *rt = s->priv_data;
506  RTSPMessageHeader reply1, *reply = &reply1;
507  int i;
508  char cmd[1024];
509 
510  av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
511  rt->nb_byes = 0;
512 
514  for (i = 0; i < rt->nb_rtsp_streams; i++) {
515  RTSPStream *rtsp_st = rt->rtsp_streams[i];
516  /* Try to initialize the connection state in a
517  * potential NAT router by sending dummy packets.
518  * RTP/RTCP dummy packets are used for RDT, too.
519  */
520  if (rtsp_st->rtp_handle &&
521  !(rt->server_type == RTSP_SERVER_WMS && i > 1))
523  }
524  }
525  if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
526  if (rt->transport == RTSP_TRANSPORT_RTP) {
527  for (i = 0; i < rt->nb_rtsp_streams; i++) {
528  RTSPStream *rtsp_st = rt->rtsp_streams[i];
529  RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
530  if (!rtpctx)
531  continue;
535  rtpctx->base_timestamp = 0;
536  rtpctx->timestamp = 0;
537  rtpctx->unwrapped_timestamp = 0;
538  rtpctx->rtcp_ts_offset = 0;
539  }
540  }
541  if (rt->state == RTSP_STATE_PAUSED) {
542  cmd[0] = 0;
543  } else {
544  snprintf(cmd, sizeof(cmd),
545  "Range: npt=%"PRId64".%03"PRId64"-\r\n",
547  rt->seek_timestamp / (AV_TIME_BASE / 1000) % 1000);
548  }
549  ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
550  if (reply->status_code != RTSP_STATUS_OK) {
551  return -1;
552  }
553  if (rt->transport == RTSP_TRANSPORT_RTP &&
554  reply->range_start != AV_NOPTS_VALUE) {
555  for (i = 0; i < rt->nb_rtsp_streams; i++) {
556  RTSPStream *rtsp_st = rt->rtsp_streams[i];
557  RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
558  AVStream *st = NULL;
559  if (!rtpctx || rtsp_st->stream_index < 0)
560  continue;
561  st = s->streams[rtsp_st->stream_index];
562  rtpctx->range_start_offset =
564  st->time_base);
565  }
566  }
567  }
569  return 0;
570 }
571 
572 /* pause the stream */
574 {
575  RTSPState *rt = s->priv_data;
576  RTSPMessageHeader reply1, *reply = &reply1;
577 
578  if (rt->state != RTSP_STATE_STREAMING)
579  return 0;
580  else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
581  ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
582  if (reply->status_code != RTSP_STATUS_OK) {
583  return -1;
584  }
585  }
586  rt->state = RTSP_STATE_PAUSED;
587  return 0;
588 }
589 
591 {
592  RTSPState *rt = s->priv_data;
593  char cmd[1024];
594  unsigned char *content = NULL;
595  int ret;
596 
597  /* describe the stream */
598  snprintf(cmd, sizeof(cmd),
599  "Accept: application/sdp\r\n");
600  if (rt->server_type == RTSP_SERVER_REAL) {
605  av_strlcat(cmd,
606  "Require: com.real.retain-entity-for-setup\r\n",
607  sizeof(cmd));
608  }
609  ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
610  if (!content)
611  return AVERROR_INVALIDDATA;
612  if (reply->status_code != RTSP_STATUS_OK) {
613  av_freep(&content);
614  return AVERROR_INVALIDDATA;
615  }
616 
617  av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", content);
618  /* now we got the SDP description, we parse it */
619  ret = ff_sdp_parse(s, (const char *)content);
620  av_freep(&content);
621  if (ret < 0)
622  return ret;
623 
624  return 0;
625 }
626 
628 {
629  RTSPState *rt = s->priv_data;
630  char proto[128], host[128], path[512], auth[128];
631  char uri[500];
632  int port;
633  int default_port = RTSP_DEFAULT_PORT;
634  char tcpname[500];
635  const char *lower_proto = "tcp";
636  unsigned char rbuf[4096];
637  unsigned char method[10];
638  int rbuflen = 0;
639  int ret;
640  enum RTSPMethod methodcode;
641 
642  if (!rt->protocols) {
644  s->protocol_blacklist);
645  if (!rt->protocols)
646  return AVERROR(ENOMEM);
647  }
648 
649  /* extract hostname and port */
650  av_url_split(proto, sizeof(proto), auth, sizeof(auth), host, sizeof(host),
651  &port, path, sizeof(path), s->filename);
652 
653  /* ff_url_join. No authorization by now (NULL) */
654  ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL, host,
655  port, "%s", path);
656 
657  if (!strcmp(proto, "rtsps")) {
658  lower_proto = "tls";
659  default_port = RTSPS_DEFAULT_PORT;
660  }
661 
662  if (port < 0)
663  port = default_port;
664 
665  /* Create TCP connection */
666  ff_url_join(tcpname, sizeof(tcpname), lower_proto, NULL, host, port,
667  "?listen&listen_timeout=%d", rt->initial_timeout * 1000);
668 
669  if (ret = ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
670  &s->interrupt_callback, NULL, rt->protocols, NULL)) {
671  av_log(s, AV_LOG_ERROR, "Unable to open RTSP for listening\n");
672  return ret;
673  }
674  rt->state = RTSP_STATE_IDLE;
675  rt->rtsp_hd_out = rt->rtsp_hd;
676  for (;;) { /* Wait for incoming RTSP messages */
677  ret = read_line(s, rbuf, sizeof(rbuf), &rbuflen);
678  if (ret < 0)
679  return ret;
680  ret = parse_command_line(s, rbuf, rbuflen, uri, sizeof(uri), method,
681  sizeof(method), &methodcode);
682  if (ret) {
683  av_log(s, AV_LOG_ERROR, "RTSP: Unexpected Command\n");
684  return ret;
685  }
686 
687  if (methodcode == ANNOUNCE) {
688  ret = rtsp_read_announce(s);
689  rt->state = RTSP_STATE_PAUSED;
690  } else if (methodcode == OPTIONS) {
691  ret = rtsp_read_options(s);
692  } else if (methodcode == RECORD) {
693  ret = rtsp_read_record(s);
694  if (!ret)
695  return 0; // We are ready for streaming
696  } else if (methodcode == SETUP)
697  ret = rtsp_read_setup(s, host, uri);
698  if (ret) {
699  ffurl_close(rt->rtsp_hd);
700  return AVERROR_INVALIDDATA;
701  }
702  }
703  return 0;
704 }
705 
706 static int rtsp_probe(AVProbeData *p)
707 {
708  if (
710  av_strstart(p->filename, "rtsps:", NULL) ||
711 #endif
712  av_strstart(p->filename, "rtsp:", NULL))
713  return AVPROBE_SCORE_MAX;
714  return 0;
715 }
716 
718 {
719  RTSPState *rt = s->priv_data;
720  int ret;
721 
722  if (rt->initial_timeout > 0)
724 
725  if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
726  ret = rtsp_listen(s);
727  if (ret)
728  return ret;
729  } else {
730  ret = ff_rtsp_connect(s);
731  if (ret)
732  return ret;
733 
734  rt->real_setup_cache = !s->nb_streams ? NULL :
735  av_mallocz(2 * s->nb_streams * sizeof(*rt->real_setup_cache));
736  if (!rt->real_setup_cache && s->nb_streams)
737  return AVERROR(ENOMEM);
738  rt->real_setup = rt->real_setup_cache + s->nb_streams;
739 
740  if (rt->initial_pause) {
741  /* do not start immediately */
742  } else {
743  if (rtsp_read_play(s) < 0) {
746  return AVERROR_INVALIDDATA;
747  }
748  }
749  }
750 
751  return 0;
752 }
753 
755  uint8_t *buf, int buf_size)
756 {
757  RTSPState *rt = s->priv_data;
758  int id, len, i, ret;
759  RTSPStream *rtsp_st;
760 
761  av_log(s, AV_LOG_TRACE, "tcp_read_packet:\n");
762 redo:
763  for (;;) {
764  RTSPMessageHeader reply;
765 
766  ret = ff_rtsp_read_reply(s, &reply, NULL, 1, NULL);
767  if (ret < 0)
768  return ret;
769  if (ret == 1) /* received '$' */
770  break;
771  /* XXX: parse message */
772  if (rt->state != RTSP_STATE_STREAMING)
773  return 0;
774  }
775  ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
776  if (ret != 3)
777  return -1;
778  id = buf[0];
779  len = AV_RB16(buf + 1);
780  av_log(s, AV_LOG_TRACE, "id=%d len=%d\n", id, len);
781  if (len > buf_size || len < 12)
782  goto redo;
783  /* get the data */
784  ret = ffurl_read_complete(rt->rtsp_hd, buf, len);
785  if (ret != len)
786  return -1;
787  if (rt->transport == RTSP_TRANSPORT_RDT &&
788  ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
789  return -1;
790 
791  /* find the matching stream */
792  for (i = 0; i < rt->nb_rtsp_streams; i++) {
793  rtsp_st = rt->rtsp_streams[i];
794  if (id >= rtsp_st->interleaved_min &&
795  id <= rtsp_st->interleaved_max)
796  goto found;
797  }
798  goto redo;
799 found:
800  *prtsp_st = rtsp_st;
801  return len;
802 }
803 
805 {
806  RTSPState *rt = s->priv_data;
807  char host[1024];
808  int port;
809 
810  av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port, NULL, 0,
811  s->filename);
812  ff_rtsp_undo_setup(s, 0);
814  rt->real_challenge);
815 }
816 
818 {
819  RTSPState *rt = s->priv_data;
820  int ret;
821  RTSPMessageHeader reply1, *reply = &reply1;
822  char cmd[1024];
823 
824 retry:
825  if (rt->server_type == RTSP_SERVER_REAL) {
826  int i;
827 
828  for (i = 0; i < s->nb_streams; i++)
829  rt->real_setup[i] = s->streams[i]->discard;
830 
831  if (!rt->need_subscription) {
832  if (memcmp (rt->real_setup, rt->real_setup_cache,
833  sizeof(enum AVDiscard) * s->nb_streams)) {
834  snprintf(cmd, sizeof(cmd),
835  "Unsubscribe: %s\r\n",
836  rt->last_subscription);
837  ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
838  cmd, reply, NULL);
839  if (reply->status_code != RTSP_STATUS_OK)
840  return AVERROR_INVALIDDATA;
841  rt->need_subscription = 1;
842  }
843  }
844 
845  if (rt->need_subscription) {
846  int r, rule_nr, first = 1;
847 
848  memcpy(rt->real_setup_cache, rt->real_setup,
849  sizeof(enum AVDiscard) * s->nb_streams);
850  rt->last_subscription[0] = 0;
851 
852  snprintf(cmd, sizeof(cmd),
853  "Subscribe: ");
854  for (i = 0; i < rt->nb_rtsp_streams; i++) {
855  rule_nr = 0;
856  for (r = 0; r < s->nb_streams; r++) {
857  if (s->streams[r]->id == i) {
858  if (s->streams[r]->discard != AVDISCARD_ALL) {
859  if (!first)
860  av_strlcat(rt->last_subscription, ",",
861  sizeof(rt->last_subscription));
863  rt->last_subscription,
864  sizeof(rt->last_subscription), i, rule_nr);
865  first = 0;
866  }
867  rule_nr++;
868  }
869  }
870  }
871  av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
872  ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
873  cmd, reply, NULL);
874  if (reply->status_code != RTSP_STATUS_OK)
875  return AVERROR_INVALIDDATA;
876  rt->need_subscription = 0;
877 
878  if (rt->state == RTSP_STATE_STREAMING)
879  rtsp_read_play (s);
880  }
881  }
882 
883  ret = ff_rtsp_fetch_packet(s, pkt);
884  if (ret < 0) {
885  if (ret == AVERROR(ETIMEDOUT) && !rt->packets) {
888  RTSPMessageHeader reply1, *reply = &reply1;
889  av_log(s, AV_LOG_WARNING, "UDP timeout, retrying with TCP\n");
890  if (rtsp_read_pause(s) != 0)
891  return -1;
892  // TEARDOWN is required on Real-RTSP, but might make
893  // other servers close the connection.
894  if (rt->server_type == RTSP_SERVER_REAL)
895  ff_rtsp_send_cmd(s, "TEARDOWN", rt->control_uri, NULL,
896  reply, NULL);
897  rt->session_id[0] = '\0';
898  if (resetup_tcp(s) == 0) {
899  rt->state = RTSP_STATE_IDLE;
900  rt->need_subscription = 1;
901  if (rtsp_read_play(s) != 0)
902  return -1;
903  goto retry;
904  }
905  }
906  }
907  return ret;
908  }
909  rt->packets++;
910 
911  if (!(rt->rtsp_flags & RTSP_FLAG_LISTEN)) {
912  /* send dummy request to keep TCP connection alive */
913  if ((av_gettime_relative() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2 ||
914  rt->auth_state.stale) {
915  if (rt->server_type == RTSP_SERVER_WMS ||
916  (rt->server_type != RTSP_SERVER_REAL &&
918  ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
919  } else {
920  ff_rtsp_send_cmd_async(s, "OPTIONS", rt->control_uri, NULL);
921  }
922  /* The stale flag should be reset when creating the auth response in
923  * ff_rtsp_send_cmd_async, but reset it here just in case we never
924  * called the auth code (if we didn't have any credentials set). */
925  rt->auth_state.stale = 0;
926  }
927  }
928 
929  return 0;
930 }
931 
932 static int rtsp_read_seek(AVFormatContext *s, int stream_index,
933  int64_t timestamp, int flags)
934 {
935  RTSPState *rt = s->priv_data;
936 
937  rt->seek_timestamp = av_rescale_q(timestamp,
938  s->streams[stream_index]->time_base,
940  switch(rt->state) {
941  default:
942  case RTSP_STATE_IDLE:
943  break;
945  if (rtsp_read_pause(s) != 0)
946  return -1;
948  if (rtsp_read_play(s) != 0)
949  return -1;
950  break;
951  case RTSP_STATE_PAUSED:
952  rt->state = RTSP_STATE_IDLE;
953  break;
954  }
955  return 0;
956 }
957 
958 static const AVClass rtsp_demuxer_class = {
959  .class_name = "RTSP demuxer",
960  .item_name = av_default_item_name,
961  .option = ff_rtsp_options,
962  .version = LIBAVUTIL_VERSION_INT,
963 };
964 
966  .name = "rtsp",
967  .long_name = NULL_IF_CONFIG_SMALL("RTSP input"),
968  .priv_data_size = sizeof(RTSPState),
974  .flags = AVFMT_NOFILE,
975  .read_play = rtsp_read_play,
976  .read_pause = rtsp_read_pause,
977  .priv_class = &rtsp_demuxer_class,
978 };
int interleaved_min
interleave ids, if TCP transport; each TCP/RTSP data packet starts with a &#39;$&#39;, 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:2870
int rtp_port_min
Minimum and maximum local UDP ports.
Definition: rtsp.h:387
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:212
int ff_rtp_get_local_rtp_port(URLContext *h)
Return the local rtp port used by the RTP connection.
Definition: rtpproto.c:541
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:366
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1181
static const struct RTSPStatusMessage status_messages[]
enum AVCodecID id
Definition: mxfenc.c:85
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:130
const char * filename
Definition: avformat.h:399
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:717
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:257
#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:789
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:706
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, 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)
enum AVDiscard * real_setup
current stream setup.
Definition: rtsp.h:296
static int resetup_tcp(AVFormatContext *s)
Definition: rtspdec.c:804
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:590
void ff_network_close(void)
Definition: network.c:77
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:40
char real_challenge[64]
the "RealChallenge1:" field from the server
Definition: rtsp.h:270
static int rtsp_read_pause(AVFormatContext *s)
Definition: rtspdec.c:573
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:754
discard all
Definition: avcodec.h:689
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:410
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
enum RTSPStatusCode code
Definition: rtspdec.c:39
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
Definition: mem.c:202
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:940
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:39
static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rtspdec.c:817
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:150
void ff_rtp_reset_packet_queue(RTPDemuxContext *s)
Definition: rtpdec.c:674
int id
Format-specific stream ID.
Definition: avformat.h:712
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:1008
URLContext * rtsp_hd_out
Additional output handle, used when input and output are done separately, eg for HTTP tunneling...
Definition: rtsp.h:328
Aggregate operation not allowed.
Definition: rtspcodes.h:32
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: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:426
char * protocol_whitelist
A comma-separated list of protocol names that can be used internally by libavformat.
Definition: avformat.h:1294
static int flags
Definition: log.c:50
enum RTSPStatusCode status_code
response code from server
Definition: rtsp.h:131
#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:140
int ffurl_open(URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options, const URLProtocol **protocols, URLContext *parent)
Create an URLContext for accessing to the resource indicated by url, and open it. ...
Definition: avio.c:175
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:503
int nb_transports
number of items in the &#39;transports&#39; variable below
Definition: rtsp.h:134
void ff_rtsp_parse_line(AVFormatContext *s, RTSPMessageHeader *reply, const char *buf, RTSPState *rt, const char *method)
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)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:99
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:462
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:124
int timeout
copy of RTSPMessageHeader->timeout, i.e.
Definition: rtsp.h:250
#define AV_RB16
Definition: intreadwrite.h:53
#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:148
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:145
const AVOption ff_rtsp_options[]
Definition: rtsp.c:80
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:175
Definition: graph2dot.c:48
URLContext * rtsp_hd
Definition: rtsp.h:220
#define CONFIG_TLS_PROTOCOL
Definition: tls.h:29
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: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:361
struct RTSPStream ** rtsp_streams
streams in this session
Definition: rtsp.h:225
static int rtsp_read_record(AVFormatContext *s)
Definition: rtspdec.c:339
uint32_t timestamp
Definition: rtpdec.h:155
int stream_index
corresponding stream index, if any.
Definition: rtsp.h:431
int seq
RTSP command sequence number.
Definition: rtsp.h:241
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:996
AVDictionary * opts
Definition: movenc.c:50
#define LIBAVFORMAT_IDENT
Definition: version.h:44
char filename[1024]
input or output filename
Definition: avformat.h:1016
int nb_rtsp_streams
number of items in the &#39;rtsp_streams&#39; variable
Definition: rtsp.h:223
int64_t first_rtcp_ntp_time
Definition: rtpdec.h:180
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:241
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
int64_t last_rtcp_ntp_time
Definition: rtpdec.h:178
Method Not Allowed.
Definition: rtspcodes.h:28
const URLProtocol ** protocols
Definition: rtsp.h:402
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:546
if(ac->has_optimized_func)
Stream structure.
Definition: avformat.h:705
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
NULL
Definition: eval.c:55
#define AV_LOG_INFO
Standard information.
Definition: log.h:135
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:718
int rtp_port_max
Definition: rtsp.h:387
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:247
int64_t unwrapped_timestamp
Definition: rtpdec.h:158
av_default_item_name
Definition: dnxhdenc.c:55
enum RTSPTransport transport
the negotiated data/packet transport protocol; e.g.
Definition: rtsp.h:258
#define RTSPS_DEFAULT_PORT
Definition: rtsp.h:73
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
Definition: libcdio.c:114
#define AVIO_FLAG_READ_WRITE
read-write pseudo flag
Definition: avio.h:370
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:68
#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:377
int client_port_max
Definition: rtsp.h:101
Describe the class of an AVClass context structure.
Definition: log.h:34
AVInputFormat ff_rtsp_demuxer
Definition: rtspdec.c:965
int index
Definition: gxfenc.c:72
static int rtsp_listen(AVFormatContext *s)
Definition: rtspdec.c:627
not initialized
Definition: rtsp.h:196
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:99
void ff_rtsp_close_streams(AVFormatContext *s)
Close and free all streams within the RTSP (de)muxer.
Definition: rtsp.c:752
int buffer_size
Definition: rtsp.h:400
This structure contains the data a format has to probe a file.
Definition: avformat.h:398
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:93
int64_t av_gettime_relative(void)
Get the current time in microseconds since some unspecified starting point.
Definition: time.c:57
enum RTSPServerType server_type
brand of server that we&#39;re talking to; e.g.
Definition: rtsp.h:267
int ffurl_close(URLContext *h)
Close the resource accessed by the URLContext h, and free the memory used by it.
Definition: avio.c:280
RTSPStatusCode
RTSP handling.
Definition: rtspcodes.h:26
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
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...
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:407
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
Main libavformat public API header.
static const AVClass rtsp_demuxer_class
Definition: rtspdec.c:958
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:412
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:250
static int rtsp_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: rtspdec.c:932
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&#39;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:276
int len
Unsupported transport.
Definition: rtspcodes.h:34
char control_url[1024]
url for this stream (from SDP)
Definition: rtsp.h:437
void * priv_data
Format private data.
Definition: avformat.h:968
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:349
AVDiscard
Definition: avcodec.h:681
char * protocol_blacklist
A comma-separated list of protocol names that will not be used internally by libavformat.
Definition: avformat.h:1285
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
RTSP Version not supported.
Definition: rtspcodes.h:37
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:529
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
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:742
int interleaved_max
Definition: rtsp.h:435
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:763
const URLProtocol ** ffurl_get_protocols(const char *whitelist, const char *blacklist)
Construct a list of protocols matching a given whitelist and/or blacklist.
Definition: protocols.c:98
int interleaved_min
interleave IDs; copies of RTSPTransportField->interleaved_min/max for the selected transport...
Definition: rtsp.h:435
This structure stores compressed data.
Definition: avcodec.h:1323
void ff_rtsp_close_connections(AVFormatContext *s)
Close all connection handles within the RTSP (de)muxer.
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:211
URLContext * rtp_handle
RTP stream handle (if UDP)
Definition: rtsp.h:427
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:235
void * transport_priv
RTP/RDT parse context if input, RTP AVFormatContext if output.
Definition: rtsp.h:428
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