FFmpeg  4.0
libsrt.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 /**
20  * @file
21  * Haivision Open SRT (Secure Reliable Transport) protocol
22  */
23 
24 #include <srt/srt.h>
25 
26 #include "libavutil/avassert.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/parseutils.h"
29 #include "libavutil/time.h"
30 
31 #include "avformat.h"
32 #include "internal.h"
33 #include "network.h"
34 #include "os_support.h"
35 #include "url.h"
36 
37 enum SRTMode {
41 };
42 
43 typedef struct SRTContext {
44  const AVClass *class;
45  int fd;
46  int eid;
47  int64_t rw_timeout;
48  int64_t listen_timeout;
51 
52  int64_t maxbw;
53  int pbkeylen;
54  char *passphrase;
55  int mss;
56  int ffs;
57  int ipttl;
58  int iptos;
59  int64_t inputbw;
60  int oheadbw;
61  int64_t tsbpddelay;
62  int tlpktdrop;
63  int nakreport;
64  int64_t connect_timeout;
65  enum SRTMode mode;
66 } SRTContext;
67 
68 #define D AV_OPT_FLAG_DECODING_PARAM
69 #define E AV_OPT_FLAG_ENCODING_PARAM
70 #define OFFSET(x) offsetof(SRTContext, x)
71 static const AVOption libsrt_options[] = {
72  { "rw_timeout", "Timeout of socket I/O operations", OFFSET(rw_timeout), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E },
73  { "listen_timeout", "Connection awaiting timeout", OFFSET(listen_timeout), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E },
74  { "send_buffer_size", "Socket send buffer size (in bytes)", OFFSET(send_buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
75  { "recv_buffer_size", "Socket receive buffer size (in bytes)", OFFSET(recv_buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
76  { "maxbw", "Maximum bandwidth (bytes per second) that the connection can use", OFFSET(maxbw), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E },
77  { "pbkeylen", "Crypto key len in bytes {16,24,32} Default: 16 (128-bit)", OFFSET(pbkeylen), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 32, .flags = D|E },
78  { "passphrase", "Crypto PBKDF2 Passphrase size[0,10..64] 0:disable crypto", OFFSET(passphrase), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E },
79  { "mss", "The Maximum Segment Size", OFFSET(mss), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1500, .flags = D|E },
80  { "ffs", "Flight flag size (window size) (in bytes)", OFFSET(ffs), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
81  { "ipttl", "IP Time To Live", OFFSET(ipttl), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 255, .flags = D|E },
82  { "iptos", "IP Type of Service", OFFSET(iptos), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 255, .flags = D|E },
83  { "inputbw", "Estimated input stream rate", OFFSET(inputbw), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E },
84  { "oheadbw", "MaxBW ceiling based on % over input stream rate", OFFSET(oheadbw), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 100, .flags = D|E },
85  { "tsbpddelay", "TsbPd receiver delay to absorb burst of missed packet retransmission", OFFSET(tsbpddelay), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E },
86  { "tlpktdrop", "Enable receiver pkt drop", OFFSET(tlpktdrop), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, .flags = D|E },
87  { "nakreport", "Enable receiver to send periodic NAK reports", OFFSET(nakreport), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, .flags = D|E },
88  { "connect_timeout", "Connect timeout. Caller default: 3000, rendezvous (x 10)", OFFSET(connect_timeout), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E },
89  { "mode", "Connection mode (caller, listener, rendezvous)", OFFSET(mode), AV_OPT_TYPE_INT, { .i64 = SRT_MODE_CALLER }, SRT_MODE_CALLER, SRT_MODE_RENDEZVOUS, .flags = D|E, "mode" },
90  { "caller", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = SRT_MODE_CALLER }, INT_MIN, INT_MAX, .flags = D|E, "mode" },
91  { "listener", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = SRT_MODE_LISTENER }, INT_MIN, INT_MAX, .flags = D|E, "mode" },
92  { "rendezvous", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = SRT_MODE_RENDEZVOUS }, INT_MIN, INT_MAX, .flags = D|E, "mode" },
93  { NULL }
94 };
95 
97 {
98  int err = srt_getlasterror(NULL);
99  av_log(h, AV_LOG_ERROR, "%s\n", srt_getlasterror_str());
100  if (err == SRT_EASYNCRCV)
101  return AVERROR(EAGAIN);
102  return AVERROR_UNKNOWN;
103 }
104 
105 static int libsrt_socket_nonblock(int socket, int enable)
106 {
107  int ret = srt_setsockopt(socket, 0, SRTO_SNDSYN, &enable, sizeof(enable));
108  if (ret < 0)
109  return ret;
110  return srt_setsockopt(socket, 0, SRTO_RCVSYN, &enable, sizeof(enable));
111 }
112 
113 static int libsrt_network_wait_fd(URLContext *h, int eid, int fd, int write)
114 {
115  int ret, len = 1;
116  int modes = write ? SRT_EPOLL_OUT : SRT_EPOLL_IN;
117  SRTSOCKET ready[1];
118 
119  if (srt_epoll_add_usock(eid, fd, &modes) < 0)
120  return libsrt_neterrno(h);
121  if (write) {
122  ret = srt_epoll_wait(eid, 0, 0, ready, &len, POLLING_TIME, 0, 0, 0, 0);
123  } else {
124  ret = srt_epoll_wait(eid, ready, &len, 0, 0, POLLING_TIME, 0, 0, 0, 0);
125  }
126  if (ret < 0) {
127  if (srt_getlasterror(NULL) == SRT_ETIMEOUT)
128  ret = AVERROR(EAGAIN);
129  else
130  ret = libsrt_neterrno(h);
131  } else {
132  ret = 0;
133  }
134  if (srt_epoll_remove_usock(eid, fd) < 0)
135  return libsrt_neterrno(h);
136  return ret;
137 }
138 
139 /* TODO de-duplicate code from ff_network_wait_fd_timeout() */
140 
141 static int libsrt_network_wait_fd_timeout(URLContext *h, int eid, int fd, int write, int64_t timeout, AVIOInterruptCB *int_cb)
142 {
143  int ret;
144  int64_t wait_start = 0;
145 
146  while (1) {
147  if (ff_check_interrupt(int_cb))
148  return AVERROR_EXIT;
149  ret = libsrt_network_wait_fd(h, eid, fd, write);
150  if (ret != AVERROR(EAGAIN))
151  return ret;
152  if (timeout > 0) {
153  if (!wait_start)
154  wait_start = av_gettime_relative();
155  else if (av_gettime_relative() - wait_start > timeout)
156  return AVERROR(ETIMEDOUT);
157  }
158  }
159 }
160 
161 static int libsrt_listen(int eid, int fd, const struct sockaddr *addr, socklen_t addrlen, URLContext *h, int timeout)
162 {
163  int ret;
164  int reuse = 1;
165  if (srt_setsockopt(fd, SOL_SOCKET, SRTO_REUSEADDR, &reuse, sizeof(reuse))) {
166  av_log(h, AV_LOG_WARNING, "setsockopt(SRTO_REUSEADDR) failed\n");
167  }
168  ret = srt_bind(fd, addr, addrlen);
169  if (ret)
170  return libsrt_neterrno(h);
171 
172  ret = srt_listen(fd, 1);
173  if (ret)
174  return libsrt_neterrno(h);
175 
176  while ((ret = libsrt_network_wait_fd_timeout(h, eid, fd, 1, timeout, &h->interrupt_callback))) {
177  switch (ret) {
178  case AVERROR(ETIMEDOUT):
179  continue;
180  default:
181  return ret;
182  }
183  }
184 
185  ret = srt_accept(fd, NULL, NULL);
186  if (ret < 0)
187  return libsrt_neterrno(h);
188  if (libsrt_socket_nonblock(ret, 1) < 0)
189  av_log(h, AV_LOG_DEBUG, "libsrt_socket_nonblock failed\n");
190 
191  return ret;
192 }
193 
194 static int libsrt_listen_connect(int eid, int fd, const struct sockaddr *addr, socklen_t addrlen, int timeout, URLContext *h, int will_try_next)
195 {
196  int ret;
197 
198  if (libsrt_socket_nonblock(fd, 1) < 0)
199  av_log(h, AV_LOG_DEBUG, "ff_socket_nonblock failed\n");
200 
201  while ((ret = srt_connect(fd, addr, addrlen))) {
202  ret = libsrt_neterrno(h);
203  switch (ret) {
204  case AVERROR(EINTR):
206  return AVERROR_EXIT;
207  continue;
208  case AVERROR(EINPROGRESS):
209  case AVERROR(EAGAIN):
210  ret = libsrt_network_wait_fd_timeout(h, eid, fd, 1, timeout, &h->interrupt_callback);
211  if (ret < 0)
212  return ret;
213  ret = srt_getlasterror(NULL);
214  srt_clearlasterror();
215  if (ret != 0) {
216  char buf[128];
217  ret = AVERROR(ret);
218  av_strerror(ret, buf, sizeof(buf));
219  if (will_try_next)
221  "Connection to %s failed (%s), trying next address\n",
222  h->filename, buf);
223  else
224  av_log(h, AV_LOG_ERROR, "Connection to %s failed: %s\n",
225  h->filename, buf);
226  }
227  default:
228  return ret;
229  }
230  }
231  return ret;
232 }
233 
234 static int libsrt_setsockopt(URLContext *h, int fd, SRT_SOCKOPT optname, const char * optnamestr, const void * optval, int optlen)
235 {
236  if (srt_setsockopt(fd, 0, optname, optval, optlen) < 0) {
237  av_log(h, AV_LOG_ERROR, "failed to set option %s on socket: %s\n", optnamestr, srt_getlasterror_str());
238  return AVERROR(EIO);
239  }
240  return 0;
241 }
242 
243 /* - The "POST" options can be altered any time on a connected socket.
244  They MAY have also some meaning when set prior to connecting; such
245  option is SRTO_RCVSYN, which makes connect/accept call asynchronous.
246  Because of that this option is treated special way in this app. */
248 {
249  SRTContext *s = h->priv_data;
250 
251  if ((s->inputbw >= 0 && libsrt_setsockopt(h, fd, SRTO_INPUTBW, "SRTO_INPUTBW", &s->inputbw, sizeof(s->inputbw)) < 0) ||
252  (s->oheadbw >= 0 && libsrt_setsockopt(h, fd, SRTO_OHEADBW, "SRTO_OHEADBW", &s->oheadbw, sizeof(s->oheadbw)) < 0)) {
253  return AVERROR(EIO);
254  }
255  return 0;
256 }
257 
258 /* - The "PRE" options must be set prior to connecting and can't be altered
259  on a connected socket, however if set on a listening socket, they are
260  derived by accept-ed socket. */
262 {
263  SRTContext *s = h->priv_data;
264  int yes = 1;
265  int tsbpddelay = s->tsbpddelay / 1000;
267 
268  if ((s->mode == SRT_MODE_RENDEZVOUS && libsrt_setsockopt(h, fd, SRTO_RENDEZVOUS, "SRTO_RENDEZVOUS", &yes, sizeof(yes)) < 0) ||
269  (s->maxbw >= 0 && libsrt_setsockopt(h, fd, SRTO_MAXBW, "SRTO_MAXBW", &s->maxbw, sizeof(s->maxbw)) < 0) ||
270  (s->pbkeylen >= 0 && libsrt_setsockopt(h, fd, SRTO_PBKEYLEN, "SRTO_PBKEYLEN", &s->pbkeylen, sizeof(s->pbkeylen)) < 0) ||
271  (s->passphrase && libsrt_setsockopt(h, fd, SRTO_PASSPHRASE, "SRTO_PASSPHRASE", &s->passphrase, sizeof(s->passphrase)) < 0) ||
272  (s->mss >= 0 && libsrt_setsockopt(h, fd, SRTO_MSS, "SRTO_MMS", &s->mss, sizeof(s->mss)) < 0) ||
273  (s->ffs >= 0 && libsrt_setsockopt(h, fd, SRTO_FC, "SRTO_FC", &s->ffs, sizeof(s->ffs)) < 0) ||
274  (s->ipttl >= 0 && libsrt_setsockopt(h, fd, SRTO_IPTTL, "SRTO_UPTTL", &s->ipttl, sizeof(s->ipttl)) < 0) ||
275  (s->iptos >= 0 && libsrt_setsockopt(h, fd, SRTO_IPTOS, "SRTO_IPTOS", &s->iptos, sizeof(s->iptos)) < 0) ||
276  (tsbpddelay >= 0 && libsrt_setsockopt(h, fd, SRTO_TSBPDDELAY, "SRTO_TSBPDELAY", &tsbpddelay, sizeof(tsbpddelay)) < 0) ||
277  (s->tlpktdrop >= 0 && libsrt_setsockopt(h, fd, SRTO_TLPKTDROP, "SRTO_TLPKDROP", &s->tlpktdrop, sizeof(s->tlpktdrop)) < 0) ||
278  (s->nakreport >= 0 && libsrt_setsockopt(h, fd, SRTO_NAKREPORT, "SRTO_NAKREPORT", &s->nakreport, sizeof(s->nakreport)) < 0) ||
279  (connect_timeout >= 0 && libsrt_setsockopt(h, fd, SRTO_CONNTIMEO, "SRTO_CONNTIMEO", &connect_timeout, sizeof(connect_timeout)) <0 )) {
280  return AVERROR(EIO);
281  }
282  return 0;
283 }
284 
285 
286 static int libsrt_setup(URLContext *h, const char *uri, int flags)
287 {
288  struct addrinfo hints = { 0 }, *ai, *cur_ai;
289  int port, fd = -1;
290  SRTContext *s = h->priv_data;
291  const char *p;
292  char buf[256];
293  int ret;
294  char hostname[1024],proto[1024],path[1024];
295  char portstr[10];
296  int open_timeout = 5000000;
297  int eid;
298 
299  eid = srt_epoll_create();
300  if (eid < 0)
301  return libsrt_neterrno(h);
302  s->eid = eid;
303 
304  av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
305  &port, path, sizeof(path), uri);
306  if (strcmp(proto, "srt"))
307  return AVERROR(EINVAL);
308  if (port <= 0 || port >= 65536) {
309  av_log(h, AV_LOG_ERROR, "Port missing in uri\n");
310  return AVERROR(EINVAL);
311  }
312  p = strchr(uri, '?');
313  if (p) {
314  if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) {
315  s->rw_timeout = strtol(buf, NULL, 10);
316  }
317  if (av_find_info_tag(buf, sizeof(buf), "listen_timeout", p)) {
318  s->listen_timeout = strtol(buf, NULL, 10);
319  }
320  }
321  if (s->rw_timeout >= 0) {
322  open_timeout = h->rw_timeout = s->rw_timeout;
323  }
324  hints.ai_family = AF_UNSPEC;
325  hints.ai_socktype = SOCK_DGRAM;
326  snprintf(portstr, sizeof(portstr), "%d", port);
327  if (s->mode == SRT_MODE_LISTENER)
328  hints.ai_flags |= AI_PASSIVE;
329  ret = getaddrinfo(hostname[0] ? hostname : NULL, portstr, &hints, &ai);
330  if (ret) {
331  av_log(h, AV_LOG_ERROR,
332  "Failed to resolve hostname %s: %s\n",
333  hostname, gai_strerror(ret));
334  return AVERROR(EIO);
335  }
336 
337  cur_ai = ai;
338 
339  restart:
340 
341  fd = srt_socket(cur_ai->ai_family, cur_ai->ai_socktype, 0);
342  if (fd < 0) {
343  ret = libsrt_neterrno(h);
344  goto fail;
345  }
346 
347  if ((ret = libsrt_set_options_pre(h, fd)) < 0) {
348  goto fail;
349  }
350 
351  /* Set the socket's send or receive buffer sizes, if specified.
352  If unspecified or setting fails, system default is used. */
353  if (s->recv_buffer_size > 0) {
354  srt_setsockopt(fd, SOL_SOCKET, SRTO_UDP_RCVBUF, &s->recv_buffer_size, sizeof (s->recv_buffer_size));
355  }
356  if (s->send_buffer_size > 0) {
357  srt_setsockopt(fd, SOL_SOCKET, SRTO_UDP_SNDBUF, &s->send_buffer_size, sizeof (s->send_buffer_size));
358  }
359  if (s->mode == SRT_MODE_LISTENER) {
360  // multi-client
361  if ((ret = libsrt_listen(s->eid, fd, cur_ai->ai_addr, cur_ai->ai_addrlen, h, open_timeout / 1000)) < 0)
362  goto fail1;
363  fd = ret;
364  } else {
365  if (s->mode == SRT_MODE_RENDEZVOUS) {
366  ret = srt_bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen);
367  if (ret)
368  goto fail1;
369  }
370 
371  if ((ret = libsrt_listen_connect(s->eid, fd, cur_ai->ai_addr, cur_ai->ai_addrlen,
372  open_timeout / 1000, h, !!cur_ai->ai_next)) < 0) {
373  if (ret == AVERROR_EXIT)
374  goto fail1;
375  else
376  goto fail;
377  }
378  }
379  if ((ret = libsrt_set_options_post(h, fd)) < 0) {
380  goto fail;
381  }
382 
383  h->is_streamed = 1;
384  s->fd = fd;
385 
386  freeaddrinfo(ai);
387  return 0;
388 
389  fail:
390  if (cur_ai->ai_next) {
391  /* Retry with the next sockaddr */
392  cur_ai = cur_ai->ai_next;
393  if (fd >= 0)
394  srt_close(fd);
395  ret = 0;
396  goto restart;
397  }
398  fail1:
399  if (fd >= 0)
400  srt_close(fd);
401  freeaddrinfo(ai);
402  return ret;
403 }
404 
405 static int libsrt_open(URLContext *h, const char *uri, int flags)
406 {
407  SRTContext *s = h->priv_data;
408  const char * p;
409  char buf[256];
410 
411  if (srt_startup() < 0) {
412  return AVERROR_UNKNOWN;
413  }
414 
415  /* SRT options (srt/srt.h) */
416  p = strchr(uri, '?');
417  if (p) {
418  if (av_find_info_tag(buf, sizeof(buf), "maxbw", p)) {
419  s->maxbw = strtoll(buf, NULL, 0);
420  }
421  if (av_find_info_tag(buf, sizeof(buf), "pbkeylen", p)) {
422  s->pbkeylen = strtol(buf, NULL, 10);
423  }
424  if (av_find_info_tag(buf, sizeof(buf), "passphrase", p)) {
425  s->passphrase = av_strndup(buf, strlen(buf));
426  }
427  if (av_find_info_tag(buf, sizeof(buf), "mss", p)) {
428  s->mss = strtol(buf, NULL, 10);
429  }
430  if (av_find_info_tag(buf, sizeof(buf), "ffs", p)) {
431  s->ffs = strtol(buf, NULL, 10);
432  }
433  if (av_find_info_tag(buf, sizeof(buf), "ipttl", p)) {
434  s->ipttl = strtol(buf, NULL, 10);
435  }
436  if (av_find_info_tag(buf, sizeof(buf), "iptos", p)) {
437  s->iptos = strtol(buf, NULL, 10);
438  }
439  if (av_find_info_tag(buf, sizeof(buf), "inputbw", p)) {
440  s->inputbw = strtoll(buf, NULL, 10);
441  }
442  if (av_find_info_tag(buf, sizeof(buf), "oheadbw", p)) {
443  s->oheadbw = strtoll(buf, NULL, 10);
444  }
445  if (av_find_info_tag(buf, sizeof(buf), "tsbpddelay", p)) {
446  s->tsbpddelay = strtol(buf, NULL, 10);
447  }
448  if (av_find_info_tag(buf, sizeof(buf), "tlpktdrop", p)) {
449  s->tlpktdrop = strtol(buf, NULL, 10);
450  }
451  if (av_find_info_tag(buf, sizeof(buf), "nakreport", p)) {
452  s->nakreport = strtol(buf, NULL, 10);
453  }
454  if (av_find_info_tag(buf, sizeof(buf), "connect_timeout", p)) {
455  s->connect_timeout = strtol(buf, NULL, 10);
456  }
457  if (av_find_info_tag(buf, sizeof(buf), "mode", p)) {
458  if (!strcmp(buf, "caller")) {
459  s->mode = SRT_MODE_CALLER;
460  } else if (!strcmp(buf, "listener")) {
461  s->mode = SRT_MODE_LISTENER;
462  } else if (!strcmp(buf, "rendezvous")) {
464  } else {
465  return AVERROR(EIO);
466  }
467  }
468  }
469  return libsrt_setup(h, uri, flags);
470 }
471 
472 static int libsrt_read(URLContext *h, uint8_t *buf, int size)
473 {
474  SRTContext *s = h->priv_data;
475  int ret;
476 
477  if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
479  if (ret)
480  return ret;
481  }
482 
483  ret = srt_recvmsg(s->fd, buf, size);
484  if (ret < 0) {
485  ret = libsrt_neterrno(h);
486  }
487 
488  return ret;
489 }
490 
491 static int libsrt_write(URLContext *h, const uint8_t *buf, int size)
492 {
493  SRTContext *s = h->priv_data;
494  int ret;
495 
496  if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
498  if (ret)
499  return ret;
500  }
501 
502  ret = srt_sendmsg(s->fd, buf, size, -1, 0);
503  if (ret < 0) {
504  ret = libsrt_neterrno(h);
505  }
506 
507  return ret;
508 }
509 
511 {
512  SRTContext *s = h->priv_data;
513 
514  srt_close(s->fd);
515 
516  srt_epoll_release(s->eid);
517 
518  srt_cleanup();
519 
520  return 0;
521 }
522 
524 {
525  SRTContext *s = h->priv_data;
526  return s->fd;
527 }
528 
529 static const AVClass libsrt_class = {
530  .class_name = "libsrt",
531  .item_name = av_default_item_name,
532  .option = libsrt_options,
533  .version = LIBAVUTIL_VERSION_INT,
534 };
535 
537  .name = "srt",
538  .url_open = libsrt_open,
539  .url_read = libsrt_read,
540  .url_write = libsrt_write,
541  .url_close = libsrt_close,
542  .url_get_file_handle = libsrt_get_file_handle,
543  .priv_data_size = sizeof(SRTContext),
545  .priv_data_class = &libsrt_class,
546 };
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:4691
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
int size
#define URL_PROTOCOL_FLAG_NETWORK
Definition: url.h:34
AVOption.
Definition: opt.h:246
static int libsrt_open(URLContext *h, const char *uri, int flags)
Definition: libsrt.c:405
int tlpktdrop
Definition: libsrt.c:62
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define D
Definition: libsrt.c:68
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int recv_buffer_size
Definition: libsrt.c:49
int is_streamed
true if streamed (no seek possible), default = false
Definition: url.h:45
AVIOInterruptCB interrupt_callback
Definition: url.h:47
int64_t listen_timeout
Definition: libsrt.c:48
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
int64_t rw_timeout
maximum time to wait for (network) read/write operation completion, in mcs
Definition: url.h:48
#define AI_PASSIVE
Definition: network.h:176
int flags
Definition: url.h:43
#define freeaddrinfo
Definition: network.h:215
static int libsrt_setsockopt(URLContext *h, int fd, SRT_SOCKOPT optname, const char *optnamestr, const void *optval, int optlen)
Definition: libsrt.c:234
static int libsrt_socket_nonblock(int socket, int enable)
Definition: libsrt.c:105
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
uint8_t
AVOptions.
miscellaneous OS support macros and functions.
int nakreport
Definition: libsrt.c:63
int64_t inputbw
Definition: libsrt.c:59
char * passphrase
Definition: libsrt.c:54
int eid
Definition: libsrt.c:46
static int flags
Definition: log.c:55
int av_find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
Attempt to find a specific tag in a URL.
Definition: parseutils.c:743
#define av_log(a,...)
Callback for checking whether to abort blocking functions.
Definition: avio.h:58
int oheadbw
Definition: libsrt.c:60
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
static const AVClass libsrt_class
Definition: libsrt.c:529
static int libsrt_setup(URLContext *h, const char *uri, int flags)
Definition: libsrt.c:286
const AVIOInterruptCB int_cb
Definition: ffmpeg.c:475
static int libsrt_listen(int eid, int fd, const struct sockaddr *addr, socklen_t addrlen, URLContext *h, int timeout)
Definition: libsrt.c:161
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
static int libsrt_set_options_post(URLContext *h, int fd)
Definition: libsrt.c:247
int64_t tsbpddelay
Definition: libsrt.c:61
simple assert() macros that are a bit more flexible than ISO C assert().
int pbkeylen
Definition: libsrt.c:53
#define fail()
Definition: checkasm.h:116
static int libsrt_network_wait_fd(URLContext *h, int eid, int fd, int write)
Definition: libsrt.c:113
int fd
Definition: libsrt.c:45
static int libsrt_read(URLContext *h, uint8_t *buf, int size)
Definition: libsrt.c:472
static int libsrt_network_wait_fd_timeout(URLContext *h, int eid, int fd, int write, int64_t timeout, AVIOInterruptCB *int_cb)
Definition: libsrt.c:141
enum SRTMode mode
Definition: libsrt.c:65
static int libsrt_get_file_handle(URLContext *h)
Definition: libsrt.c:523
int64_t maxbw
Definition: libsrt.c:52
#define AVERROR_EXIT
Immediate exit was requested; the called function should not be restarted.
Definition: error.h:56
static const AVOption libsrt_options[]
Definition: libsrt.c:71
int ff_check_interrupt(AVIOInterruptCB *cb)
Check if the user has requested to interrupt a blocking function associated with cb.
Definition: avio.c:664
#define AVIO_FLAG_NONBLOCK
Use non-blocking mode.
Definition: avio.h:673
int iptos
Definition: libsrt.c:58
void * buf
Definition: avisynth_c.h:690
Definition: url.h:38
const URLProtocol ff_libsrt_protocol
Definition: libsrt.c:536
Describe the class of an AVClass context structure.
Definition: log.h:67
void * priv_data
Definition: url.h:41
#define gai_strerror
Definition: network.h:222
#define snprintf
Definition: snprintf.h:34
misc parsing utilities
#define POLLING_TIME
Definition: network.h:246
const char * name
Definition: url.h:55
int ai_socktype
Definition: network.h:137
int64_t av_gettime_relative(void)
Get the current time in microseconds since some unspecified starting point.
Definition: time.c:56
int ipttl
Definition: libsrt.c:57
int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
Put a description of the AVERROR code errnum in errbuf.
Definition: error.c:105
int64_t connect_timeout
Definition: libsrt.c:64
#define getaddrinfo
Definition: network.h:214
Main libavformat public API header.
int64_t rw_timeout
Definition: libsrt.c:47
int ffs
Definition: libsrt.c:56
char * filename
specified URL
Definition: url.h:42
#define OFFSET(x)
Definition: libsrt.c:70
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
int send_buffer_size
Definition: libsrt.c:50
#define E
Definition: libsrt.c:69
static const SiprModeParam modes[MODE_COUNT]
Definition: sipr.c:69
static int libsrt_write(URLContext *h, const uint8_t *buf, int size)
Definition: libsrt.c:491
int len
int mss
Definition: libsrt.c:55
static int libsrt_close(URLContext *h)
Definition: libsrt.c:510
SRTMode
Definition: libsrt.c:37
int ai_flags
Definition: network.h:135
static int libsrt_listen_connect(int eid, int fd, const struct sockaddr *addr, socklen_t addrlen, int timeout, URLContext *h, int will_try_next)
Definition: libsrt.c:194
unbuffered private I/O API
mode
Use these values in ebur128_init (or&#39;ed).
Definition: ebur128.h:83
char * av_strndup(const char *s, size_t len)
Duplicate a substring of a string.
Definition: mem.c:263
static int libsrt_set_options_pre(URLContext *h, int fd)
Definition: libsrt.c:261
static int libsrt_neterrno(URLContext *h)
Definition: libsrt.c:96
int ai_family
Definition: network.h:136