FFmpeg  4.4.4
cmdutils.c
Go to the documentation of this file.
1 /*
2  * Various utilities for command line tools
3  * Copyright (c) 2000-2003 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 <string.h>
23 #include <stdint.h>
24 #include <stdlib.h>
25 #include <errno.h>
26 #include <math.h>
27 
28 /* Include only the enabled headers since some compilers (namely, Sun
29  Studio) will not omit unused inline functions and create undefined
30  references to libraries that are not being built. */
31 
32 #include "config.h"
33 #include "compat/va_copy.h"
34 #include "libavformat/avformat.h"
35 #include "libavfilter/avfilter.h"
36 #include "libavdevice/avdevice.h"
38 #include "libswscale/swscale.h"
41 #include "libavutil/attributes.h"
42 #include "libavutil/avassert.h"
43 #include "libavutil/avstring.h"
44 #include "libavutil/bprint.h"
45 #include "libavutil/display.h"
46 #include "libavutil/mathematics.h"
47 #include "libavutil/imgutils.h"
48 #include "libavutil/libm.h"
49 #include "libavutil/parseutils.h"
50 #include "libavutil/pixdesc.h"
51 #include "libavutil/eval.h"
52 #include "libavutil/dict.h"
53 #include "libavutil/opt.h"
54 #include "libavutil/cpu.h"
55 #include "libavutil/ffversion.h"
56 #include "libavutil/version.h"
57 #include "cmdutils.h"
58 #if HAVE_SYS_RESOURCE_H
59 #include <sys/time.h>
60 #include <sys/resource.h>
61 #endif
62 #ifdef _WIN32
63 #include <windows.h>
64 #endif
65 
66 static int init_report(const char *env);
67 
71 
72 static FILE *report_file;
74 int hide_banner = 0;
75 
80 };
81 
82 void init_opts(void)
83 {
84  av_dict_set(&sws_dict, "flags", "bicubic", 0);
85 }
86 
87 void uninit_opts(void)
88 {
94 }
95 
96 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
97 {
98  vfprintf(stdout, fmt, vl);
99 }
100 
101 static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
102 {
103  va_list vl2;
104  char line[1024];
105  static int print_prefix = 1;
106 
107  va_copy(vl2, vl);
108  av_log_default_callback(ptr, level, fmt, vl);
109  av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
110  va_end(vl2);
111  if (report_file_level >= level) {
112  fputs(line, report_file);
113  fflush(report_file);
114  }
115 }
116 
117 void init_dynload(void)
118 {
119 #if HAVE_SETDLLDIRECTORY && defined(_WIN32)
120  /* Calling SetDllDirectory with the empty string (but not NULL) removes the
121  * current working directory from the DLL search path as a security pre-caution. */
122  SetDllDirectory("");
123 #endif
124 }
125 
126 static void (*program_exit)(int ret);
127 
128 void register_exit(void (*cb)(int ret))
129 {
130  program_exit = cb;
131 }
132 
133 void exit_program(int ret)
134 {
135  if (program_exit)
136  program_exit(ret);
137 
138  exit(ret);
139 }
140 
141 double parse_number_or_die(const char *context, const char *numstr, int type,
142  double min, double max)
143 {
144  char *tail;
145  const char *error;
146  double d = av_strtod(numstr, &tail);
147  if (*tail)
148  error = "Expected number for %s but found: %s\n";
149  else if (d < min || d > max)
150  error = "The value for %s was %s which is not within %f - %f\n";
151  else if (type == OPT_INT64 && (int64_t)d != d)
152  error = "Expected int64 for %s but found %s\n";
153  else if (type == OPT_INT && (int)d != d)
154  error = "Expected int for %s but found %s\n";
155  else
156  return d;
157  av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
158  exit_program(1);
159  return 0;
160 }
161 
162 int64_t parse_time_or_die(const char *context, const char *timestr,
163  int is_duration)
164 {
165  int64_t us;
166  if (av_parse_time(&us, timestr, is_duration) < 0) {
167  av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
168  is_duration ? "duration" : "date", context, timestr);
169  exit_program(1);
170  }
171  return us;
172 }
173 
174 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
175  int rej_flags, int alt_flags)
176 {
177  const OptionDef *po;
178  int first;
179 
180  first = 1;
181  for (po = options; po->name; po++) {
182  char buf[128];
183 
184  if (((po->flags & req_flags) != req_flags) ||
185  (alt_flags && !(po->flags & alt_flags)) ||
186  (po->flags & rej_flags))
187  continue;
188 
189  if (first) {
190  printf("%s\n", msg);
191  first = 0;
192  }
193  av_strlcpy(buf, po->name, sizeof(buf));
194  if (po->argname) {
195  av_strlcat(buf, " ", sizeof(buf));
196  av_strlcat(buf, po->argname, sizeof(buf));
197  }
198  printf("-%-17s %s\n", buf, po->help);
199  }
200  printf("\n");
201 }
202 
203 void show_help_children(const AVClass *class, int flags)
204 {
205  void *iter = NULL;
206  const AVClass *child;
207  if (class->option) {
208  av_opt_show2(&class, NULL, flags, 0);
209  printf("\n");
210  }
211 
212  while (child = av_opt_child_class_iterate(class, &iter))
213  show_help_children(child, flags);
214 }
215 
216 static const OptionDef *find_option(const OptionDef *po, const char *name)
217 {
218  while (po->name) {
219  const char *end;
220  if (av_strstart(name, po->name, &end) && (!*end || *end == ':'))
221  break;
222  po++;
223  }
224  return po;
225 }
226 
227 /* _WIN32 means using the windows libc - cygwin doesn't define that
228  * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
229  * it doesn't provide the actual command line via GetCommandLineW(). */
230 #if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
231 #include <shellapi.h>
232 /* Will be leaked on exit */
233 static char** win32_argv_utf8 = NULL;
234 static int win32_argc = 0;
235 
236 /**
237  * Prepare command line arguments for executable.
238  * For Windows - perform wide-char to UTF-8 conversion.
239  * Input arguments should be main() function arguments.
240  * @param argc_ptr Arguments number (including executable)
241  * @param argv_ptr Arguments list.
242  */
243 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
244 {
245  char *argstr_flat;
246  wchar_t **argv_w;
247  int i, buffsize = 0, offset = 0;
248 
249  if (win32_argv_utf8) {
250  *argc_ptr = win32_argc;
251  *argv_ptr = win32_argv_utf8;
252  return;
253  }
254 
255  win32_argc = 0;
256  argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
257  if (win32_argc <= 0 || !argv_w)
258  return;
259 
260  /* determine the UTF-8 buffer size (including NULL-termination symbols) */
261  for (i = 0; i < win32_argc; i++)
262  buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
263  NULL, 0, NULL, NULL);
264 
265  win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
266  argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
267  if (!win32_argv_utf8) {
268  LocalFree(argv_w);
269  return;
270  }
271 
272  for (i = 0; i < win32_argc; i++) {
273  win32_argv_utf8[i] = &argstr_flat[offset];
274  offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
275  &argstr_flat[offset],
276  buffsize - offset, NULL, NULL);
277  }
278  win32_argv_utf8[i] = NULL;
279  LocalFree(argv_w);
280 
281  *argc_ptr = win32_argc;
282  *argv_ptr = win32_argv_utf8;
283 }
284 #else
285 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
286 {
287  /* nothing to do */
288 }
289 #endif /* HAVE_COMMANDLINETOARGVW */
290 
291 static int write_option(void *optctx, const OptionDef *po, const char *opt,
292  const char *arg)
293 {
294  /* new-style options contain an offset into optctx, old-style address of
295  * a global var*/
296  void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
297  (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
298  int *dstcount;
299 
300  if (po->flags & OPT_SPEC) {
301  SpecifierOpt **so = dst;
302  char *p = strchr(opt, ':');
303  char *str;
304 
305  dstcount = (int *)(so + 1);
306  *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
307  str = av_strdup(p ? p + 1 : "");
308  if (!str)
309  return AVERROR(ENOMEM);
310  (*so)[*dstcount - 1].specifier = str;
311  dst = &(*so)[*dstcount - 1].u;
312  }
313 
314  if (po->flags & OPT_STRING) {
315  char *str;
316  str = av_strdup(arg);
317  av_freep(dst);
318  if (!str)
319  return AVERROR(ENOMEM);
320  *(char **)dst = str;
321  } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
322  *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
323  } else if (po->flags & OPT_INT64) {
324  *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
325  } else if (po->flags & OPT_TIME) {
326  *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
327  } else if (po->flags & OPT_FLOAT) {
328  *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
329  } else if (po->flags & OPT_DOUBLE) {
330  *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
331  } else if (po->u.func_arg) {
332  int ret = po->u.func_arg(optctx, opt, arg);
333  if (ret < 0) {
335  "Failed to set value '%s' for option '%s': %s\n",
336  arg, opt, av_err2str(ret));
337  return ret;
338  }
339  }
340  if (po->flags & OPT_EXIT)
341  exit_program(0);
342 
343  return 0;
344 }
345 
346 int parse_option(void *optctx, const char *opt, const char *arg,
347  const OptionDef *options)
348 {
349  const OptionDef *po;
350  int ret;
351 
352  po = find_option(options, opt);
353  if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
354  /* handle 'no' bool option */
355  po = find_option(options, opt + 2);
356  if ((po->name && (po->flags & OPT_BOOL)))
357  arg = "0";
358  } else if (po->flags & OPT_BOOL)
359  arg = "1";
360 
361  if (!po->name)
362  po = find_option(options, "default");
363  if (!po->name) {
364  av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
365  return AVERROR(EINVAL);
366  }
367  if (po->flags & HAS_ARG && !arg) {
368  av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
369  return AVERROR(EINVAL);
370  }
371 
372  ret = write_option(optctx, po, opt, arg);
373  if (ret < 0)
374  return ret;
375 
376  return !!(po->flags & HAS_ARG);
377 }
378 
379 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
380  void (*parse_arg_function)(void *, const char*))
381 {
382  const char *opt;
383  int optindex, handleoptions = 1, ret;
384 
385  /* perform system-dependent conversions for arguments list */
386  prepare_app_arguments(&argc, &argv);
387 
388  /* parse options */
389  optindex = 1;
390  while (optindex < argc) {
391  opt = argv[optindex++];
392 
393  if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
394  if (opt[1] == '-' && opt[2] == '\0') {
395  handleoptions = 0;
396  continue;
397  }
398  opt++;
399 
400  if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
401  exit_program(1);
402  optindex += ret;
403  } else {
404  if (parse_arg_function)
405  parse_arg_function(optctx, opt);
406  }
407  }
408 }
409 
410 int parse_optgroup(void *optctx, OptionGroup *g)
411 {
412  int i, ret;
413 
414  av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
415  g->group_def->name, g->arg);
416 
417  for (i = 0; i < g->nb_opts; i++) {
418  Option *o = &g->opts[i];
419 
420  if (g->group_def->flags &&
421  !(g->group_def->flags & o->opt->flags)) {
422  av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
423  "%s %s -- you are trying to apply an input option to an "
424  "output file or vice versa. Move this option before the "
425  "file it belongs to.\n", o->key, o->opt->help,
426  g->group_def->name, g->arg);
427  return AVERROR(EINVAL);
428  }
429 
430  av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
431  o->key, o->opt->help, o->val);
432 
433  ret = write_option(optctx, o->opt, o->key, o->val);
434  if (ret < 0)
435  return ret;
436  }
437 
438  av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
439 
440  return 0;
441 }
442 
443 int locate_option(int argc, char **argv, const OptionDef *options,
444  const char *optname)
445 {
446  const OptionDef *po;
447  int i;
448 
449  for (i = 1; i < argc; i++) {
450  const char *cur_opt = argv[i];
451 
452  if (*cur_opt++ != '-')
453  continue;
454 
455  po = find_option(options, cur_opt);
456  if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
457  po = find_option(options, cur_opt + 2);
458 
459  if ((!po->name && !strcmp(cur_opt, optname)) ||
460  (po->name && !strcmp(optname, po->name)))
461  return i;
462 
463  if (!po->name || po->flags & HAS_ARG)
464  i++;
465  }
466  return 0;
467 }
468 
469 static void dump_argument(const char *a)
470 {
471  const unsigned char *p;
472 
473  for (p = a; *p; p++)
474  if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
475  *p == '_' || (*p >= 'a' && *p <= 'z')))
476  break;
477  if (!*p) {
478  fputs(a, report_file);
479  return;
480  }
481  fputc('"', report_file);
482  for (p = a; *p; p++) {
483  if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
484  fprintf(report_file, "\\%c", *p);
485  else if (*p < ' ' || *p > '~')
486  fprintf(report_file, "\\x%02x", *p);
487  else
488  fputc(*p, report_file);
489  }
490  fputc('"', report_file);
491 }
492 
493 static void check_options(const OptionDef *po)
494 {
495  while (po->name) {
496  if (po->flags & OPT_PERFILE)
498  po++;
499  }
500 }
501 
502 void parse_loglevel(int argc, char **argv, const OptionDef *options)
503 {
504  int idx = locate_option(argc, argv, options, "loglevel");
505  const char *env;
506 
508 
509  if (!idx)
510  idx = locate_option(argc, argv, options, "v");
511  if (idx && argv[idx + 1])
512  opt_loglevel(NULL, "loglevel", argv[idx + 1]);
513  idx = locate_option(argc, argv, options, "report");
514  if ((env = getenv("FFREPORT")) || idx) {
515  init_report(env);
516  if (report_file) {
517  int i;
518  fprintf(report_file, "Command line:\n");
519  for (i = 0; i < argc; i++) {
520  dump_argument(argv[i]);
521  fputc(i < argc - 1 ? ' ' : '\n', report_file);
522  }
523  fflush(report_file);
524  }
525  }
526  idx = locate_option(argc, argv, options, "hide_banner");
527  if (idx)
528  hide_banner = 1;
529 }
530 
531 static const AVOption *opt_find(void *obj, const char *name, const char *unit,
532  int opt_flags, int search_flags)
533 {
534  const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
535  if(o && !o->flags)
536  return NULL;
537  return o;
538 }
539 
540 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS && (arg[0]=='-' || arg[0]=='+')) ? AV_DICT_APPEND : 0
541 int opt_default(void *optctx, const char *opt, const char *arg)
542 {
543  const AVOption *o;
544  int consumed = 0;
545  char opt_stripped[128];
546  const char *p;
547  const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
548 #if CONFIG_AVRESAMPLE
549  const AVClass *rc = avresample_get_class();
550 #endif
551 #if CONFIG_SWSCALE
552  const AVClass *sc = sws_get_class();
553 #endif
554 #if CONFIG_SWRESAMPLE
555  const AVClass *swr_class = swr_get_class();
556 #endif
557 
558  if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
560 
561  if (!(p = strchr(opt, ':')))
562  p = opt + strlen(opt);
563  av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
564 
565  if ((o = opt_find(&cc, opt_stripped, NULL, 0,
567  ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
568  (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
569  av_dict_set(&codec_opts, opt, arg, FLAGS);
570  consumed = 1;
571  }
572  if ((o = opt_find(&fc, opt, NULL, 0,
574  av_dict_set(&format_opts, opt, arg, FLAGS);
575  if (consumed)
576  av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
577  consumed = 1;
578  }
579 #if CONFIG_SWSCALE
580  if (!consumed && (o = opt_find(&sc, opt, NULL, 0,
582  struct SwsContext *sws = sws_alloc_context();
583  int ret = av_opt_set(sws, opt, arg, 0);
584  sws_freeContext(sws);
585  if (!strcmp(opt, "srcw") || !strcmp(opt, "srch") ||
586  !strcmp(opt, "dstw") || !strcmp(opt, "dsth") ||
587  !strcmp(opt, "src_format") || !strcmp(opt, "dst_format")) {
588  av_log(NULL, AV_LOG_ERROR, "Directly using swscale dimensions/format options is not supported, please use the -s or -pix_fmt options\n");
589  return AVERROR(EINVAL);
590  }
591  if (ret < 0) {
592  av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
593  return ret;
594  }
595 
596  av_dict_set(&sws_dict, opt, arg, FLAGS);
597 
598  consumed = 1;
599  }
600 #else
601  if (!consumed && !strcmp(opt, "sws_flags")) {
602  av_log(NULL, AV_LOG_WARNING, "Ignoring %s %s, due to disabled swscale\n", opt, arg);
603  consumed = 1;
604  }
605 #endif
606 #if CONFIG_SWRESAMPLE
607  if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
609  struct SwrContext *swr = swr_alloc();
610  int ret = av_opt_set(swr, opt, arg, 0);
611  swr_free(&swr);
612  if (ret < 0) {
613  av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
614  return ret;
615  }
616  av_dict_set(&swr_opts, opt, arg, FLAGS);
617  consumed = 1;
618  }
619 #endif
620 #if CONFIG_AVRESAMPLE
621  if ((o=opt_find(&rc, opt, NULL, 0,
624  consumed = 1;
625  }
626 #endif
627 
628  if (consumed)
629  return 0;
631 }
632 
633 /*
634  * Check whether given option is a group separator.
635  *
636  * @return index of the group definition that matched or -1 if none
637  */
638 static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
639  const char *opt)
640 {
641  int i;
642 
643  for (i = 0; i < nb_groups; i++) {
644  const OptionGroupDef *p = &groups[i];
645  if (p->sep && !strcmp(p->sep, opt))
646  return i;
647  }
648 
649  return -1;
650 }
651 
652 /*
653  * Finish parsing an option group.
654  *
655  * @param group_idx which group definition should this group belong to
656  * @param arg argument of the group delimiting option
657  */
658 static void finish_group(OptionParseContext *octx, int group_idx,
659  const char *arg)
660 {
661  OptionGroupList *l = &octx->groups[group_idx];
662  OptionGroup *g;
663 
664  GROW_ARRAY(l->groups, l->nb_groups);
665  g = &l->groups[l->nb_groups - 1];
666 
667  *g = octx->cur_group;
668  g->arg = arg;
669  g->group_def = l->group_def;
670  g->sws_dict = sws_dict;
671  g->swr_opts = swr_opts;
672  g->codec_opts = codec_opts;
673  g->format_opts = format_opts;
674  g->resample_opts = resample_opts;
675 
676  codec_opts = NULL;
677  format_opts = NULL;
679  sws_dict = NULL;
680  swr_opts = NULL;
681  init_opts();
682 
683  memset(&octx->cur_group, 0, sizeof(octx->cur_group));
684 }
685 
686 /*
687  * Add an option instance to currently parsed group.
688  */
689 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
690  const char *key, const char *val)
691 {
692  int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
693  OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
694 
695  GROW_ARRAY(g->opts, g->nb_opts);
696  g->opts[g->nb_opts - 1].opt = opt;
697  g->opts[g->nb_opts - 1].key = key;
698  g->opts[g->nb_opts - 1].val = val;
699 }
700 
702  const OptionGroupDef *groups, int nb_groups)
703 {
704  static const OptionGroupDef global_group = { "global" };
705  int i;
706 
707  memset(octx, 0, sizeof(*octx));
708 
709  octx->nb_groups = nb_groups;
710  octx->groups = av_mallocz_array(octx->nb_groups, sizeof(*octx->groups));
711  if (!octx->groups)
712  exit_program(1);
713 
714  for (i = 0; i < octx->nb_groups; i++)
715  octx->groups[i].group_def = &groups[i];
716 
717  octx->global_opts.group_def = &global_group;
718  octx->global_opts.arg = "";
719 
720  init_opts();
721 }
722 
724 {
725  int i, j;
726 
727  for (i = 0; i < octx->nb_groups; i++) {
728  OptionGroupList *l = &octx->groups[i];
729 
730  for (j = 0; j < l->nb_groups; j++) {
731  av_freep(&l->groups[j].opts);
735 
736  av_dict_free(&l->groups[j].sws_dict);
737  av_dict_free(&l->groups[j].swr_opts);
738  }
739  av_freep(&l->groups);
740  }
741  av_freep(&octx->groups);
742 
743  av_freep(&octx->cur_group.opts);
744  av_freep(&octx->global_opts.opts);
745 
746  uninit_opts();
747 }
748 
749 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
750  const OptionDef *options,
751  const OptionGroupDef *groups, int nb_groups)
752 {
753  int optindex = 1;
754  int dashdash = -2;
755 
756  /* perform system-dependent conversions for arguments list */
757  prepare_app_arguments(&argc, &argv);
758 
759  init_parse_context(octx, groups, nb_groups);
760  av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
761 
762  while (optindex < argc) {
763  const char *opt = argv[optindex++], *arg;
764  const OptionDef *po;
765  int ret;
766 
767  av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
768 
769  if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
770  dashdash = optindex;
771  continue;
772  }
773  /* unnamed group separators, e.g. output filename */
774  if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
775  finish_group(octx, 0, opt);
776  av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
777  continue;
778  }
779  opt++;
780 
781 #define GET_ARG(arg) \
782 do { \
783  arg = argv[optindex++]; \
784  if (!arg) { \
785  av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
786  return AVERROR(EINVAL); \
787  } \
788 } while (0)
789 
790  /* named group separators, e.g. -i */
791  if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
792  GET_ARG(arg);
793  finish_group(octx, ret, arg);
794  av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
795  groups[ret].name, arg);
796  continue;
797  }
798 
799  /* normal options */
800  po = find_option(options, opt);
801  if (po->name) {
802  if (po->flags & OPT_EXIT) {
803  /* optional argument, e.g. -h */
804  arg = argv[optindex++];
805  } else if (po->flags & HAS_ARG) {
806  GET_ARG(arg);
807  } else {
808  arg = "1";
809  }
810 
811  add_opt(octx, po, opt, arg);
812  av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
813  "argument '%s'.\n", po->name, po->help, arg);
814  continue;
815  }
816 
817  /* AVOptions */
818  if (argv[optindex]) {
819  ret = opt_default(NULL, opt, argv[optindex]);
820  if (ret >= 0) {
821  av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
822  "argument '%s'.\n", opt, argv[optindex]);
823  optindex++;
824  continue;
825  } else if (ret != AVERROR_OPTION_NOT_FOUND) {
826  av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
827  "with argument '%s'.\n", opt, argv[optindex]);
828  return ret;
829  }
830  }
831 
832  /* boolean -nofoo options */
833  if (opt[0] == 'n' && opt[1] == 'o' &&
834  (po = find_option(options, opt + 2)) &&
835  po->name && po->flags & OPT_BOOL) {
836  add_opt(octx, po, opt, "0");
837  av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
838  "argument 0.\n", po->name, po->help);
839  continue;
840  }
841 
842  av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
844  }
845 
847  av_log(NULL, AV_LOG_WARNING, "Trailing option(s) found in the "
848  "command: may be ignored.\n");
849 
850  av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
851 
852  return 0;
853 }
854 
855 int opt_cpuflags(void *optctx, const char *opt, const char *arg)
856 {
857  int ret;
858  unsigned flags = av_get_cpu_flags();
859 
860  if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
861  return ret;
862 
864  return 0;
865 }
866 
867 int opt_loglevel(void *optctx, const char *opt, const char *arg)
868 {
869  const struct { const char *name; int level; } log_levels[] = {
870  { "quiet" , AV_LOG_QUIET },
871  { "panic" , AV_LOG_PANIC },
872  { "fatal" , AV_LOG_FATAL },
873  { "error" , AV_LOG_ERROR },
874  { "warning", AV_LOG_WARNING },
875  { "info" , AV_LOG_INFO },
876  { "verbose", AV_LOG_VERBOSE },
877  { "debug" , AV_LOG_DEBUG },
878  { "trace" , AV_LOG_TRACE },
879  };
880  const char *token;
881  char *tail;
882  int flags = av_log_get_flags();
883  int level = av_log_get_level();
884  int cmd, i = 0;
885 
886  av_assert0(arg);
887  while (*arg) {
888  token = arg;
889  if (*token == '+' || *token == '-') {
890  cmd = *token++;
891  } else {
892  cmd = 0;
893  }
894  if (!i && !cmd) {
895  flags = 0; /* missing relative prefix, build absolute value */
896  }
897  if (!strncmp(token, "repeat", 6)) {
898  if (cmd == '-') {
900  } else {
902  }
903  arg = token + 6;
904  } else if (!strncmp(token, "level", 5)) {
905  if (cmd == '-') {
907  } else {
909  }
910  arg = token + 5;
911  } else {
912  break;
913  }
914  i++;
915  }
916  if (!*arg) {
917  goto end;
918  } else if (*arg == '+') {
919  arg++;
920  } else if (!i) {
921  flags = av_log_get_flags(); /* level value without prefix, reset flags */
922  }
923 
924  for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
925  if (!strcmp(log_levels[i].name, arg)) {
926  level = log_levels[i].level;
927  goto end;
928  }
929  }
930 
931  level = strtol(arg, &tail, 10);
932  if (*tail) {
933  av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
934  "Possible levels are numbers or:\n", arg);
935  for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
936  av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
937  exit_program(1);
938  }
939 
940 end:
943  return 0;
944 }
945 
946 static void expand_filename_template(AVBPrint *bp, const char *template,
947  struct tm *tm)
948 {
949  int c;
950 
951  while ((c = *(template++))) {
952  if (c == '%') {
953  if (!(c = *(template++)))
954  break;
955  switch (c) {
956  case 'p':
957  av_bprintf(bp, "%s", program_name);
958  break;
959  case 't':
960  av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
961  tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
962  tm->tm_hour, tm->tm_min, tm->tm_sec);
963  break;
964  case '%':
965  av_bprint_chars(bp, c, 1);
966  break;
967  }
968  } else {
969  av_bprint_chars(bp, c, 1);
970  }
971  }
972 }
973 
974 static int init_report(const char *env)
975 {
976  char *filename_template = NULL;
977  char *key, *val;
978  int ret, count = 0;
979  int prog_loglevel, envlevel = 0;
980  time_t now;
981  struct tm *tm;
982  AVBPrint filename;
983 
984  if (report_file) /* already opened */
985  return 0;
986  time(&now);
987  tm = localtime(&now);
988 
989  while (env && *env) {
990  if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
991  if (count)
993  "Failed to parse FFREPORT environment variable: %s\n",
994  av_err2str(ret));
995  break;
996  }
997  if (*env)
998  env++;
999  count++;
1000  if (!strcmp(key, "file")) {
1001  av_free(filename_template);
1002  filename_template = val;
1003  val = NULL;
1004  } else if (!strcmp(key, "level")) {
1005  char *tail;
1006  report_file_level = strtol(val, &tail, 10);
1007  if (*tail) {
1008  av_log(NULL, AV_LOG_FATAL, "Invalid report file level\n");
1009  exit_program(1);
1010  }
1011  envlevel = 1;
1012  } else {
1013  av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
1014  }
1015  av_free(val);
1016  av_free(key);
1017  }
1018 
1020  expand_filename_template(&filename,
1021  av_x_if_null(filename_template, "%p-%t.log"), tm);
1022  av_free(filename_template);
1023  if (!av_bprint_is_complete(&filename)) {
1024  av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
1025  return AVERROR(ENOMEM);
1026  }
1027 
1028  prog_loglevel = av_log_get_level();
1029  if (!envlevel)
1030  report_file_level = FFMAX(report_file_level, prog_loglevel);
1031 
1032  report_file = fopen(filename.str, "w");
1033  if (!report_file) {
1034  int ret = AVERROR(errno);
1035  av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
1036  filename.str, strerror(errno));
1037  return ret;
1038  }
1041  "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
1042  "Report written to \"%s\"\n"
1043  "Log level: %d\n",
1044  program_name,
1045  tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
1046  tm->tm_hour, tm->tm_min, tm->tm_sec,
1047  filename.str, report_file_level);
1048  av_bprint_finalize(&filename, NULL);
1049  return 0;
1050 }
1051 
1052 int opt_report(void *optctx, const char *opt, const char *arg)
1053 {
1054  return init_report(NULL);
1055 }
1056 
1057 int opt_max_alloc(void *optctx, const char *opt, const char *arg)
1058 {
1059  char *tail;
1060  size_t max;
1061 
1062  max = strtol(arg, &tail, 10);
1063  if (*tail) {
1064  av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
1065  exit_program(1);
1066  }
1067  av_max_alloc(max);
1068  return 0;
1069 }
1070 
1071 int opt_timelimit(void *optctx, const char *opt, const char *arg)
1072 {
1073 #if HAVE_SETRLIMIT
1074  int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
1075  struct rlimit rl = { lim, lim + 1 };
1076  if (setrlimit(RLIMIT_CPU, &rl))
1077  perror("setrlimit");
1078 #else
1079  av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
1080 #endif
1081  return 0;
1082 }
1083 
1084 void print_error(const char *filename, int err)
1085 {
1086  char errbuf[128];
1087  const char *errbuf_ptr = errbuf;
1088 
1089  if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
1090  errbuf_ptr = strerror(AVUNERROR(err));
1091  av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
1092 }
1093 
1094 static int warned_cfg = 0;
1095 
1096 #define INDENT 1
1097 #define SHOW_VERSION 2
1098 #define SHOW_CONFIG 0
1099 #define SHOW_COPYRIGHT 8
1100 
1101 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
1102  if (CONFIG_##LIBNAME) { \
1103  const char *indent = flags & INDENT? " " : ""; \
1104  if (flags & SHOW_VERSION) { \
1105  unsigned int version = libname##_version(); \
1106  av_log(NULL, level, \
1107  "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n", \
1108  indent, #libname, \
1109  LIB##LIBNAME##_VERSION_MAJOR, \
1110  LIB##LIBNAME##_VERSION_MINOR, \
1111  LIB##LIBNAME##_VERSION_MICRO, \
1112  AV_VERSION_MAJOR(version), AV_VERSION_MINOR(version),\
1113  AV_VERSION_MICRO(version)); \
1114  } \
1115  if (flags & SHOW_CONFIG) { \
1116  const char *cfg = libname##_configuration(); \
1117  if (strcmp(FFMPEG_CONFIGURATION, cfg)) { \
1118  if (!warned_cfg) { \
1119  av_log(NULL, level, \
1120  "%sWARNING: library configuration mismatch\n", \
1121  indent); \
1122  warned_cfg = 1; \
1123  } \
1124  av_log(NULL, level, "%s%-11s configuration: %s\n", \
1125  indent, #libname, cfg); \
1126  } \
1127  } \
1128  } \
1129 
1130 static void print_all_libs_info(int flags, int level)
1131 {
1132  PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
1133  PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
1134  PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
1135  PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
1136  PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
1137  PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
1138  PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
1139  PRINT_LIB_INFO(swresample, SWRESAMPLE, flags, level);
1140  PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
1141 }
1142 
1143 static void print_program_info(int flags, int level)
1144 {
1145  const char *indent = flags & INDENT? " " : "";
1146 
1147  av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
1148  if (flags & SHOW_COPYRIGHT)
1149  av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
1151  av_log(NULL, level, "\n");
1152  av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
1153 
1154  av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
1155 }
1156 
1157 static void print_buildconf(int flags, int level)
1158 {
1159  const char *indent = flags & INDENT ? " " : "";
1160  char str[] = { FFMPEG_CONFIGURATION };
1161  char *conflist, *remove_tilde, *splitconf;
1162 
1163  // Change all the ' --' strings to '~--' so that
1164  // they can be identified as tokens.
1165  while ((conflist = strstr(str, " --")) != NULL) {
1166  conflist[0] = '~';
1167  }
1168 
1169  // Compensate for the weirdness this would cause
1170  // when passing 'pkg-config --static'.
1171  while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
1172  remove_tilde[sizeof("pkg-config~") - 2] = ' ';
1173  }
1174 
1175  splitconf = strtok(str, "~");
1176  av_log(NULL, level, "\n%sconfiguration:\n", indent);
1177  while (splitconf != NULL) {
1178  av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
1179  splitconf = strtok(NULL, "~");
1180  }
1181 }
1182 
1183 void show_banner(int argc, char **argv, const OptionDef *options)
1184 {
1185  int idx = locate_option(argc, argv, options, "version");
1186  if (hide_banner || idx)
1187  return;
1188 
1192 }
1193 
1194 int show_version(void *optctx, const char *opt, const char *arg)
1195 {
1199 
1200  return 0;
1201 }
1202 
1203 int show_buildconf(void *optctx, const char *opt, const char *arg)
1204 {
1207 
1208  return 0;
1209 }
1210 
1211 int show_license(void *optctx, const char *opt, const char *arg)
1212 {
1213 #if CONFIG_NONFREE
1214  printf(
1215  "This version of %s has nonfree parts compiled in.\n"
1216  "Therefore it is not legally redistributable.\n",
1217  program_name );
1218 #elif CONFIG_GPLV3
1219  printf(
1220  "%s is free software; you can redistribute it and/or modify\n"
1221  "it under the terms of the GNU General Public License as published by\n"
1222  "the Free Software Foundation; either version 3 of the License, or\n"
1223  "(at your option) any later version.\n"
1224  "\n"
1225  "%s is distributed in the hope that it will be useful,\n"
1226  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1227  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1228  "GNU General Public License for more details.\n"
1229  "\n"
1230  "You should have received a copy of the GNU General Public License\n"
1231  "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1233 #elif CONFIG_GPL
1234  printf(
1235  "%s is free software; you can redistribute it and/or modify\n"
1236  "it under the terms of the GNU General Public License as published by\n"
1237  "the Free Software Foundation; either version 2 of the License, or\n"
1238  "(at your option) any later version.\n"
1239  "\n"
1240  "%s is distributed in the hope that it will be useful,\n"
1241  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1242  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1243  "GNU General Public License for more details.\n"
1244  "\n"
1245  "You should have received a copy of the GNU General Public License\n"
1246  "along with %s; if not, write to the Free Software\n"
1247  "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1249 #elif CONFIG_LGPLV3
1250  printf(
1251  "%s is free software; you can redistribute it and/or modify\n"
1252  "it under the terms of the GNU Lesser General Public License as published by\n"
1253  "the Free Software Foundation; either version 3 of the License, or\n"
1254  "(at your option) any later version.\n"
1255  "\n"
1256  "%s is distributed in the hope that it will be useful,\n"
1257  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1258  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1259  "GNU Lesser General Public License for more details.\n"
1260  "\n"
1261  "You should have received a copy of the GNU Lesser General Public License\n"
1262  "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1264 #else
1265  printf(
1266  "%s is free software; you can redistribute it and/or\n"
1267  "modify it under the terms of the GNU Lesser General Public\n"
1268  "License as published by the Free Software Foundation; either\n"
1269  "version 2.1 of the License, or (at your option) any later version.\n"
1270  "\n"
1271  "%s is distributed in the hope that it will be useful,\n"
1272  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1273  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
1274  "Lesser General Public License for more details.\n"
1275  "\n"
1276  "You should have received a copy of the GNU Lesser General Public\n"
1277  "License along with %s; if not, write to the Free Software\n"
1278  "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1280 #endif
1281 
1282  return 0;
1283 }
1284 
1285 static int is_device(const AVClass *avclass)
1286 {
1287  if (!avclass)
1288  return 0;
1289  return AV_IS_INPUT_DEVICE(avclass->category) || AV_IS_OUTPUT_DEVICE(avclass->category);
1290 }
1291 
1292 static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only, int muxdemuxers)
1293 {
1294  void *ifmt_opaque = NULL;
1295  const AVInputFormat *ifmt = NULL;
1296  void *ofmt_opaque = NULL;
1297  const AVOutputFormat *ofmt = NULL;
1298  const char *last_name;
1299  int is_dev;
1300 
1301  printf("%s\n"
1302  " D. = Demuxing supported\n"
1303  " .E = Muxing supported\n"
1304  " --\n", device_only ? "Devices:" : "File formats:");
1305  last_name = "000";
1306  for (;;) {
1307  int decode = 0;
1308  int encode = 0;
1309  const char *name = NULL;
1310  const char *long_name = NULL;
1311 
1312  if (muxdemuxers !=SHOW_DEMUXERS) {
1313  ofmt_opaque = NULL;
1314  while ((ofmt = av_muxer_iterate(&ofmt_opaque))) {
1315  is_dev = is_device(ofmt->priv_class);
1316  if (!is_dev && device_only)
1317  continue;
1318  if ((!name || strcmp(ofmt->name, name) < 0) &&
1319  strcmp(ofmt->name, last_name) > 0) {
1320  name = ofmt->name;
1321  long_name = ofmt->long_name;
1322  encode = 1;
1323  }
1324  }
1325  }
1326  if (muxdemuxers != SHOW_MUXERS) {
1327  ifmt_opaque = NULL;
1328  while ((ifmt = av_demuxer_iterate(&ifmt_opaque))) {
1329  is_dev = is_device(ifmt->priv_class);
1330  if (!is_dev && device_only)
1331  continue;
1332  if ((!name || strcmp(ifmt->name, name) < 0) &&
1333  strcmp(ifmt->name, last_name) > 0) {
1334  name = ifmt->name;
1335  long_name = ifmt->long_name;
1336  encode = 0;
1337  }
1338  if (name && strcmp(ifmt->name, name) == 0)
1339  decode = 1;
1340  }
1341  }
1342  if (!name)
1343  break;
1344  last_name = name;
1345 
1346  printf(" %s%s %-15s %s\n",
1347  decode ? "D" : " ",
1348  encode ? "E" : " ",
1349  name,
1350  long_name ? long_name:" ");
1351  }
1352  return 0;
1353 }
1354 
1355 int show_formats(void *optctx, const char *opt, const char *arg)
1356 {
1357  return show_formats_devices(optctx, opt, arg, 0, SHOW_DEFAULT);
1358 }
1359 
1360 int show_muxers(void *optctx, const char *opt, const char *arg)
1361 {
1362  return show_formats_devices(optctx, opt, arg, 0, SHOW_MUXERS);
1363 }
1364 
1365 int show_demuxers(void *optctx, const char *opt, const char *arg)
1366 {
1367  return show_formats_devices(optctx, opt, arg, 0, SHOW_DEMUXERS);
1368 }
1369 
1370 int show_devices(void *optctx, const char *opt, const char *arg)
1371 {
1372  return show_formats_devices(optctx, opt, arg, 1, SHOW_DEFAULT);
1373 }
1374 
1375 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
1376  if (codec->field) { \
1377  const type *p = codec->field; \
1378  \
1379  printf(" Supported " list_name ":"); \
1380  while (*p != term) { \
1381  get_name(*p); \
1382  printf(" %s", name); \
1383  p++; \
1384  } \
1385  printf("\n"); \
1386  } \
1387 
1388 static void print_codec(const AVCodec *c)
1389 {
1390  int encoder = av_codec_is_encoder(c);
1391 
1392  printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
1393  c->long_name ? c->long_name : "");
1394 
1395  printf(" General capabilities: ");
1396  if (c->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)
1397  printf("horizband ");
1398  if (c->capabilities & AV_CODEC_CAP_DR1)
1399  printf("dr1 ");
1400  if (c->capabilities & AV_CODEC_CAP_TRUNCATED)
1401  printf("trunc ");
1402  if (c->capabilities & AV_CODEC_CAP_DELAY)
1403  printf("delay ");
1404  if (c->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME)
1405  printf("small ");
1406  if (c->capabilities & AV_CODEC_CAP_SUBFRAMES)
1407  printf("subframes ");
1408  if (c->capabilities & AV_CODEC_CAP_EXPERIMENTAL)
1409  printf("exp ");
1410  if (c->capabilities & AV_CODEC_CAP_CHANNEL_CONF)
1411  printf("chconf ");
1412  if (c->capabilities & AV_CODEC_CAP_PARAM_CHANGE)
1413  printf("paramchange ");
1414  if (c->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)
1415  printf("variable ");
1416  if (c->capabilities & (AV_CODEC_CAP_FRAME_THREADS |
1419  printf("threads ");
1420  if (c->capabilities & AV_CODEC_CAP_AVOID_PROBING)
1421  printf("avoidprobe ");
1422  if (c->capabilities & AV_CODEC_CAP_HARDWARE)
1423  printf("hardware ");
1424  if (c->capabilities & AV_CODEC_CAP_HYBRID)
1425  printf("hybrid ");
1426  if (!c->capabilities)
1427  printf("none");
1428  printf("\n");
1429 
1430  if (c->type == AVMEDIA_TYPE_VIDEO ||
1431  c->type == AVMEDIA_TYPE_AUDIO) {
1432  printf(" Threading capabilities: ");
1433  switch (c->capabilities & (AV_CODEC_CAP_FRAME_THREADS |
1437  AV_CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
1438  case AV_CODEC_CAP_FRAME_THREADS: printf("frame"); break;
1439  case AV_CODEC_CAP_SLICE_THREADS: printf("slice"); break;
1440  case AV_CODEC_CAP_OTHER_THREADS: printf("other"); break;
1441  default: printf("none"); break;
1442  }
1443  printf("\n");
1444  }
1445 
1446  if (avcodec_get_hw_config(c, 0)) {
1447  printf(" Supported hardware devices: ");
1448  for (int i = 0;; i++) {
1449  const AVCodecHWConfig *config = avcodec_get_hw_config(c, i);
1450  if (!config)
1451  break;
1452  printf("%s ", av_hwdevice_get_type_name(config->device_type));
1453  }
1454  printf("\n");
1455  }
1456 
1457  if (c->supported_framerates) {
1458  const AVRational *fps = c->supported_framerates;
1459 
1460  printf(" Supported framerates:");
1461  while (fps->num) {
1462  printf(" %d/%d", fps->num, fps->den);
1463  fps++;
1464  }
1465  printf("\n");
1466  }
1467  PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
1469  PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
1471  PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
1473  PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
1474  0, GET_CH_LAYOUT_DESC);
1475 
1476  if (c->priv_class) {
1477  show_help_children(c->priv_class,
1480  }
1481 }
1482 
1484 {
1485  switch (type) {
1486  case AVMEDIA_TYPE_VIDEO: return 'V';
1487  case AVMEDIA_TYPE_AUDIO: return 'A';
1488  case AVMEDIA_TYPE_DATA: return 'D';
1489  case AVMEDIA_TYPE_SUBTITLE: return 'S';
1490  case AVMEDIA_TYPE_ATTACHMENT:return 'T';
1491  default: return '?';
1492  }
1493 }
1494 
1495 static const AVCodec *next_codec_for_id(enum AVCodecID id, void **iter,
1496  int encoder)
1497 {
1498  const AVCodec *c;
1499  while ((c = av_codec_iterate(iter))) {
1500  if (c->id == id &&
1501  (encoder ? av_codec_is_encoder(c) : av_codec_is_decoder(c)))
1502  return c;
1503  }
1504  return NULL;
1505 }
1506 
1507 static int compare_codec_desc(const void *a, const void *b)
1508 {
1509  const AVCodecDescriptor * const *da = a;
1510  const AVCodecDescriptor * const *db = b;
1511 
1512  return (*da)->type != (*db)->type ? FFDIFFSIGN((*da)->type, (*db)->type) :
1513  strcmp((*da)->name, (*db)->name);
1514 }
1515 
1516 static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
1517 {
1518  const AVCodecDescriptor *desc = NULL;
1519  const AVCodecDescriptor **codecs;
1520  unsigned nb_codecs = 0, i = 0;
1521 
1522  while ((desc = avcodec_descriptor_next(desc)))
1523  nb_codecs++;
1524  if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
1525  av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
1526  exit_program(1);
1527  }
1528  desc = NULL;
1529  while ((desc = avcodec_descriptor_next(desc)))
1530  codecs[i++] = desc;
1531  av_assert0(i == nb_codecs);
1532  qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
1533  *rcodecs = codecs;
1534  return nb_codecs;
1535 }
1536 
1537 static void print_codecs_for_id(enum AVCodecID id, int encoder)
1538 {
1539  void *iter = NULL;
1540  const AVCodec *codec;
1541 
1542  printf(" (%s: ", encoder ? "encoders" : "decoders");
1543 
1544  while ((codec = next_codec_for_id(id, &iter, encoder)))
1545  printf("%s ", codec->name);
1546 
1547  printf(")");
1548 }
1549 
1550 int show_codecs(void *optctx, const char *opt, const char *arg)
1551 {
1552  const AVCodecDescriptor **codecs;
1553  unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1554 
1555  printf("Codecs:\n"
1556  " D..... = Decoding supported\n"
1557  " .E.... = Encoding supported\n"
1558  " ..V... = Video codec\n"
1559  " ..A... = Audio codec\n"
1560  " ..S... = Subtitle codec\n"
1561  " ...I.. = Intra frame-only codec\n"
1562  " ....L. = Lossy compression\n"
1563  " .....S = Lossless compression\n"
1564  " -------\n");
1565  for (i = 0; i < nb_codecs; i++) {
1566  const AVCodecDescriptor *desc = codecs[i];
1567  const AVCodec *codec;
1568  void *iter = NULL;
1569 
1570  if (strstr(desc->name, "_deprecated"))
1571  continue;
1572 
1573  printf(" ");
1574  printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1575  printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1576 
1577  printf("%c", get_media_type_char(desc->type));
1578  printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1579  printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1580  printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1581 
1582  printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1583 
1584  /* print decoders/encoders when there's more than one or their
1585  * names are different from codec name */
1586  while ((codec = next_codec_for_id(desc->id, &iter, 0))) {
1587  if (strcmp(codec->name, desc->name)) {
1588  print_codecs_for_id(desc->id, 0);
1589  break;
1590  }
1591  }
1592  iter = NULL;
1593  while ((codec = next_codec_for_id(desc->id, &iter, 1))) {
1594  if (strcmp(codec->name, desc->name)) {
1595  print_codecs_for_id(desc->id, 1);
1596  break;
1597  }
1598  }
1599 
1600  printf("\n");
1601  }
1602  av_free(codecs);
1603  return 0;
1604 }
1605 
1606 static void print_codecs(int encoder)
1607 {
1608  const AVCodecDescriptor **codecs;
1609  unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1610 
1611  printf("%s:\n"
1612  " V..... = Video\n"
1613  " A..... = Audio\n"
1614  " S..... = Subtitle\n"
1615  " .F.... = Frame-level multithreading\n"
1616  " ..S... = Slice-level multithreading\n"
1617  " ...X.. = Codec is experimental\n"
1618  " ....B. = Supports draw_horiz_band\n"
1619  " .....D = Supports direct rendering method 1\n"
1620  " ------\n",
1621  encoder ? "Encoders" : "Decoders");
1622  for (i = 0; i < nb_codecs; i++) {
1623  const AVCodecDescriptor *desc = codecs[i];
1624  const AVCodec *codec;
1625  void *iter = NULL;
1626 
1627  while ((codec = next_codec_for_id(desc->id, &iter, encoder))) {
1628  printf(" %c", get_media_type_char(desc->type));
1629  printf((codec->capabilities & AV_CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1630  printf((codec->capabilities & AV_CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1631  printf((codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1632  printf((codec->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
1633  printf((codec->capabilities & AV_CODEC_CAP_DR1) ? "D" : ".");
1634 
1635  printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1636  if (strcmp(codec->name, desc->name))
1637  printf(" (codec %s)", desc->name);
1638 
1639  printf("\n");
1640  }
1641  }
1642  av_free(codecs);
1643 }
1644 
1645 int show_decoders(void *optctx, const char *opt, const char *arg)
1646 {
1647  print_codecs(0);
1648  return 0;
1649 }
1650 
1651 int show_encoders(void *optctx, const char *opt, const char *arg)
1652 {
1653  print_codecs(1);
1654  return 0;
1655 }
1656 
1657 int show_bsfs(void *optctx, const char *opt, const char *arg)
1658 {
1659  const AVBitStreamFilter *bsf = NULL;
1660  void *opaque = NULL;
1661 
1662  printf("Bitstream filters:\n");
1663  while ((bsf = av_bsf_iterate(&opaque)))
1664  printf("%s\n", bsf->name);
1665  printf("\n");
1666  return 0;
1667 }
1668 
1669 int show_protocols(void *optctx, const char *opt, const char *arg)
1670 {
1671  void *opaque = NULL;
1672  const char *name;
1673 
1674  printf("Supported file protocols:\n"
1675  "Input:\n");
1676  while ((name = avio_enum_protocols(&opaque, 0)))
1677  printf(" %s\n", name);
1678  printf("Output:\n");
1679  while ((name = avio_enum_protocols(&opaque, 1)))
1680  printf(" %s\n", name);
1681  return 0;
1682 }
1683 
1684 int show_filters(void *optctx, const char *opt, const char *arg)
1685 {
1686 #if CONFIG_AVFILTER
1687  const AVFilter *filter = NULL;
1688  char descr[64], *descr_cur;
1689  void *opaque = NULL;
1690  int i, j;
1691  const AVFilterPad *pad;
1692 
1693  printf("Filters:\n"
1694  " T.. = Timeline support\n"
1695  " .S. = Slice threading\n"
1696  " ..C = Command support\n"
1697  " A = Audio input/output\n"
1698  " V = Video input/output\n"
1699  " N = Dynamic number and/or type of input/output\n"
1700  " | = Source or sink filter\n");
1701  while ((filter = av_filter_iterate(&opaque))) {
1702  descr_cur = descr;
1703  for (i = 0; i < 2; i++) {
1704  if (i) {
1705  *(descr_cur++) = '-';
1706  *(descr_cur++) = '>';
1707  }
1708  pad = i ? filter->outputs : filter->inputs;
1709  for (j = 0; pad && avfilter_pad_get_name(pad, j); j++) {
1710  if (descr_cur >= descr + sizeof(descr) - 4)
1711  break;
1712  *(descr_cur++) = get_media_type_char(avfilter_pad_get_type(pad, j));
1713  }
1714  if (!j)
1715  *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
1716  ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
1717  }
1718  *descr_cur = 0;
1719  printf(" %c%c%c %-17s %-10s %s\n",
1720  filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
1721  filter->flags & AVFILTER_FLAG_SLICE_THREADS ? 'S' : '.',
1722  filter->process_command ? 'C' : '.',
1723  filter->name, descr, filter->description);
1724  }
1725 #else
1726  printf("No filters available: libavfilter disabled\n");
1727 #endif
1728  return 0;
1729 }
1730 
1731 int show_colors(void *optctx, const char *opt, const char *arg)
1732 {
1733  const char *name;
1734  const uint8_t *rgb;
1735  int i;
1736 
1737  printf("%-32s #RRGGBB\n", "name");
1738 
1739  for (i = 0; name = av_get_known_color_name(i, &rgb); i++)
1740  printf("%-32s #%02x%02x%02x\n", name, rgb[0], rgb[1], rgb[2]);
1741 
1742  return 0;
1743 }
1744 
1745 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1746 {
1747  const AVPixFmtDescriptor *pix_desc = NULL;
1748 
1749  printf("Pixel formats:\n"
1750  "I.... = Supported Input format for conversion\n"
1751  ".O... = Supported Output format for conversion\n"
1752  "..H.. = Hardware accelerated format\n"
1753  "...P. = Paletted format\n"
1754  "....B = Bitstream format\n"
1755  "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1756  "-----\n");
1757 
1758 #if !CONFIG_SWSCALE
1759 # define sws_isSupportedInput(x) 0
1760 # define sws_isSupportedOutput(x) 0
1761 #endif
1762 
1763  while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1765  printf("%c%c%c%c%c %-16s %d %2d\n",
1766  sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1767  sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1768  pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL ? 'H' : '.',
1769  pix_desc->flags & AV_PIX_FMT_FLAG_PAL ? 'P' : '.',
1770  pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
1771  pix_desc->name,
1772  pix_desc->nb_components,
1773  av_get_bits_per_pixel(pix_desc));
1774  }
1775  return 0;
1776 }
1777 
1778 int show_layouts(void *optctx, const char *opt, const char *arg)
1779 {
1780  int i = 0;
1781  uint64_t layout, j;
1782  const char *name, *descr;
1783 
1784  printf("Individual channels:\n"
1785  "NAME DESCRIPTION\n");
1786  for (i = 0; i < 63; i++) {
1787  name = av_get_channel_name((uint64_t)1 << i);
1788  if (!name)
1789  continue;
1790  descr = av_get_channel_description((uint64_t)1 << i);
1791  printf("%-14s %s\n", name, descr);
1792  }
1793  printf("\nStandard channel layouts:\n"
1794  "NAME DECOMPOSITION\n");
1795  for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
1796  if (name) {
1797  printf("%-14s ", name);
1798  for (j = 1; j; j <<= 1)
1799  if ((layout & j))
1800  printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
1801  printf("\n");
1802  }
1803  }
1804  return 0;
1805 }
1806 
1807 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1808 {
1809  int i;
1810  char fmt_str[128];
1811  for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1812  printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1813  return 0;
1814 }
1815 
1816 static void show_help_codec(const char *name, int encoder)
1817 {
1818  const AVCodecDescriptor *desc;
1819  const AVCodec *codec;
1820 
1821  if (!name) {
1822  av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1823  return;
1824  }
1825 
1826  codec = encoder ? avcodec_find_encoder_by_name(name) :
1828 
1829  if (codec)
1830  print_codec(codec);
1831  else if ((desc = avcodec_descriptor_get_by_name(name))) {
1832  void *iter = NULL;
1833  int printed = 0;
1834 
1835  while ((codec = next_codec_for_id(desc->id, &iter, encoder))) {
1836  printed = 1;
1837  print_codec(codec);
1838  }
1839 
1840  if (!printed) {
1841  av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
1842  "but no %s for it are available. FFmpeg might need to be "
1843  "recompiled with additional external libraries.\n",
1844  name, encoder ? "encoders" : "decoders");
1845  }
1846  } else {
1847  av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
1848  name);
1849  }
1850 }
1851 
1852 static void show_help_demuxer(const char *name)
1853 {
1854  const AVInputFormat *fmt = av_find_input_format(name);
1855 
1856  if (!fmt) {
1857  av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1858  return;
1859  }
1860 
1861  printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1862 
1863  if (fmt->extensions)
1864  printf(" Common extensions: %s.\n", fmt->extensions);
1865 
1866  if (fmt->priv_class)
1868 }
1869 
1870 static void show_help_protocol(const char *name)
1871 {
1872  const AVClass *proto_class;
1873 
1874  if (!name) {
1875  av_log(NULL, AV_LOG_ERROR, "No protocol name specified.\n");
1876  return;
1877  }
1878 
1879  proto_class = avio_protocol_get_class(name);
1880  if (!proto_class) {
1881  av_log(NULL, AV_LOG_ERROR, "Unknown protocol '%s'.\n", name);
1882  return;
1883  }
1884 
1886 }
1887 
1888 static void show_help_muxer(const char *name)
1889 {
1890  const AVCodecDescriptor *desc;
1891  const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1892 
1893  if (!fmt) {
1894  av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1895  return;
1896  }
1897 
1898  printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1899 
1900  if (fmt->extensions)
1901  printf(" Common extensions: %s.\n", fmt->extensions);
1902  if (fmt->mime_type)
1903  printf(" Mime type: %s.\n", fmt->mime_type);
1904  if (fmt->video_codec != AV_CODEC_ID_NONE &&
1906  printf(" Default video codec: %s.\n", desc->name);
1907  }
1908  if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1910  printf(" Default audio codec: %s.\n", desc->name);
1911  }
1912  if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1914  printf(" Default subtitle codec: %s.\n", desc->name);
1915  }
1916 
1917  if (fmt->priv_class)
1919 }
1920 
1921 #if CONFIG_AVFILTER
1922 static void show_help_filter(const char *name)
1923 {
1924 #if CONFIG_AVFILTER
1925  const AVFilter *f = avfilter_get_by_name(name);
1926  int i, count;
1927 
1928  if (!name) {
1929  av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
1930  return;
1931  } else if (!f) {
1932  av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
1933  return;
1934  }
1935 
1936  printf("Filter %s\n", f->name);
1937  if (f->description)
1938  printf(" %s\n", f->description);
1939 
1940  if (f->flags & AVFILTER_FLAG_SLICE_THREADS)
1941  printf(" slice threading supported\n");
1942 
1943  printf(" Inputs:\n");
1944  count = avfilter_pad_count(f->inputs);
1945  for (i = 0; i < count; i++) {
1946  printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
1948  }
1949  if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)
1950  printf(" dynamic (depending on the options)\n");
1951  else if (!count)
1952  printf(" none (source filter)\n");
1953 
1954  printf(" Outputs:\n");
1955  count = avfilter_pad_count(f->outputs);
1956  for (i = 0; i < count; i++) {
1957  printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
1959  }
1960  if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS)
1961  printf(" dynamic (depending on the options)\n");
1962  else if (!count)
1963  printf(" none (sink filter)\n");
1964 
1965  if (f->priv_class)
1968  if (f->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)
1969  printf("This filter has support for timeline through the 'enable' option.\n");
1970 #else
1971  av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
1972  "can not to satisfy request\n");
1973 #endif
1974 }
1975 #endif
1976 
1977 static void show_help_bsf(const char *name)
1978 {
1980 
1981  if (!name) {
1982  av_log(NULL, AV_LOG_ERROR, "No bitstream filter name specified.\n");
1983  return;
1984  } else if (!bsf) {
1985  av_log(NULL, AV_LOG_ERROR, "Unknown bit stream filter '%s'.\n", name);
1986  return;
1987  }
1988 
1989  printf("Bit stream filter %s\n", bsf->name);
1990  PRINT_CODEC_SUPPORTED(bsf, codec_ids, enum AVCodecID, "codecs",
1992  if (bsf->priv_class)
1994 }
1995 
1996 int show_help(void *optctx, const char *opt, const char *arg)
1997 {
1998  char *topic, *par;
2000 
2001  topic = av_strdup(arg ? arg : "");
2002  if (!topic)
2003  return AVERROR(ENOMEM);
2004  par = strchr(topic, '=');
2005  if (par)
2006  *par++ = 0;
2007 
2008  if (!*topic) {
2009  show_help_default(topic, par);
2010  } else if (!strcmp(topic, "decoder")) {
2011  show_help_codec(par, 0);
2012  } else if (!strcmp(topic, "encoder")) {
2013  show_help_codec(par, 1);
2014  } else if (!strcmp(topic, "demuxer")) {
2015  show_help_demuxer(par);
2016  } else if (!strcmp(topic, "muxer")) {
2017  show_help_muxer(par);
2018  } else if (!strcmp(topic, "protocol")) {
2019  show_help_protocol(par);
2020 #if CONFIG_AVFILTER
2021  } else if (!strcmp(topic, "filter")) {
2022  show_help_filter(par);
2023 #endif
2024  } else if (!strcmp(topic, "bsf")) {
2025  show_help_bsf(par);
2026  } else {
2027  show_help_default(topic, par);
2028  }
2029 
2030  av_freep(&topic);
2031  return 0;
2032 }
2033 
2034 int read_yesno(void)
2035 {
2036  int c = getchar();
2037  int yesno = (av_toupper(c) == 'Y');
2038 
2039  while (c != '\n' && c != EOF)
2040  c = getchar();
2041 
2042  return yesno;
2043 }
2044 
2045 FILE *get_preset_file(char *filename, size_t filename_size,
2046  const char *preset_name, int is_path,
2047  const char *codec_name)
2048 {
2049  FILE *f = NULL;
2050  int i;
2051  const char *base[3] = { getenv("FFMPEG_DATADIR"),
2052  getenv("HOME"),
2053  FFMPEG_DATADIR, };
2054 
2055  if (is_path) {
2056  av_strlcpy(filename, preset_name, filename_size);
2057  f = fopen(filename, "r");
2058  } else {
2059 #if HAVE_GETMODULEHANDLE && defined(_WIN32)
2060  char datadir[MAX_PATH], *ls;
2061  base[2] = NULL;
2062 
2063  if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
2064  {
2065  for (ls = datadir; ls < datadir + strlen(datadir); ls++)
2066  if (*ls == '\\') *ls = '/';
2067 
2068  if (ls = strrchr(datadir, '/'))
2069  {
2070  *ls = 0;
2071  strncat(datadir, "/ffpresets", sizeof(datadir) - 1 - strlen(datadir));
2072  base[2] = datadir;
2073  }
2074  }
2075 #endif
2076  for (i = 0; i < 3 && !f; i++) {
2077  if (!base[i])
2078  continue;
2079  snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
2080  i != 1 ? "" : "/.ffmpeg", preset_name);
2081  f = fopen(filename, "r");
2082  if (!f && codec_name) {
2083  snprintf(filename, filename_size,
2084  "%s%s/%s-%s.ffpreset",
2085  base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
2086  preset_name);
2087  f = fopen(filename, "r");
2088  }
2089  }
2090  }
2091 
2092  return f;
2093 }
2094 
2095 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
2096 {
2097  int ret = avformat_match_stream_specifier(s, st, spec);
2098  if (ret < 0)
2099  av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
2100  return ret;
2101 }
2102 
2104  AVFormatContext *s, AVStream *st, const AVCodec *codec)
2105 {
2106  AVDictionary *ret = NULL;
2107  AVDictionaryEntry *t = NULL;
2108  int flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM
2110  char prefix = 0;
2111  const AVClass *cc = avcodec_get_class();
2112 
2113  if (!codec)
2114  codec = s->oformat ? avcodec_find_encoder(codec_id)
2116 
2117  switch (st->codecpar->codec_type) {
2118  case AVMEDIA_TYPE_VIDEO:
2119  prefix = 'v';
2121  break;
2122  case AVMEDIA_TYPE_AUDIO:
2123  prefix = 'a';
2125  break;
2126  case AVMEDIA_TYPE_SUBTITLE:
2127  prefix = 's';
2129  break;
2130  }
2131 
2132  while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
2133  const AVClass *priv_class;
2134  char *p = strchr(t->key, ':');
2135 
2136  /* check stream specification in opt name */
2137  if (p)
2138  switch (check_stream_specifier(s, st, p + 1)) {
2139  case 1: *p = 0; break;
2140  case 0: continue;
2141  default: exit_program(1);
2142  }
2143 
2144  if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
2145  !codec ||
2146  ((priv_class = codec->priv_class) &&
2147  av_opt_find(&priv_class, t->key, NULL, flags,
2149  av_dict_set(&ret, t->key, t->value, 0);
2150  else if (t->key[0] == prefix &&
2151  av_opt_find(&cc, t->key + 1, NULL, flags,
2153  av_dict_set(&ret, t->key + 1, t->value, 0);
2154 
2155  if (p)
2156  *p = ':';
2157  }
2158  return ret;
2159 }
2160 
2163 {
2164  int i;
2165  AVDictionary **opts;
2166 
2167  if (!s->nb_streams)
2168  return NULL;
2169  opts = av_mallocz_array(s->nb_streams, sizeof(*opts));
2170  if (!opts) {
2172  "Could not alloc memory for stream options.\n");
2173  return NULL;
2174  }
2175  for (i = 0; i < s->nb_streams; i++)
2176  opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codecpar->codec_id,
2177  s, s->streams[i], NULL);
2178  return opts;
2179 }
2180 
2181 void *grow_array(void *array, int elem_size, int *size, int new_size)
2182 {
2183  if (new_size >= INT_MAX / elem_size) {
2184  av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
2185  exit_program(1);
2186  }
2187  if (*size < new_size) {
2188  uint8_t *tmp = av_realloc_array(array, new_size, elem_size);
2189  if (!tmp) {
2190  av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
2191  exit_program(1);
2192  }
2193  memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
2194  *size = new_size;
2195  return tmp;
2196  }
2197  return array;
2198 }
2199 
2201 {
2202  uint8_t* displaymatrix = av_stream_get_side_data(st,
2204  double theta = 0;
2205  if (displaymatrix)
2206  theta = -av_display_rotation_get((int32_t*) displaymatrix);
2207 
2208  theta -= 360*floor(theta/360 + 0.9/360);
2209 
2210  if (fabs(theta - 90*round(theta/90)) > 2)
2211  av_log(NULL, AV_LOG_WARNING, "Odd rotation angle.\n"
2212  "If you want to help, upload a sample "
2213  "of this file to https://streams.videolan.org/upload/ "
2214  "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)");
2215 
2216  return theta;
2217 }
2218 
2219 #if CONFIG_AVDEVICE
2220 static int print_device_sources(AVInputFormat *fmt, AVDictionary *opts)
2221 {
2222  int ret, i;
2223  AVDeviceInfoList *device_list = NULL;
2224 
2225  if (!fmt || !fmt->priv_class || !AV_IS_INPUT_DEVICE(fmt->priv_class->category))
2226  return AVERROR(EINVAL);
2227 
2228  printf("Auto-detected sources for %s:\n", fmt->name);
2229  if (!fmt->get_device_list) {
2230  ret = AVERROR(ENOSYS);
2231  printf("Cannot list sources. Not implemented.\n");
2232  goto fail;
2233  }
2234 
2235  if ((ret = avdevice_list_input_sources(fmt, NULL, opts, &device_list)) < 0) {
2236  printf("Cannot list sources.\n");
2237  goto fail;
2238  }
2239 
2240  for (i = 0; i < device_list->nb_devices; i++) {
2241  printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2242  device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2243  }
2244 
2245  fail:
2246  avdevice_free_list_devices(&device_list);
2247  return ret;
2248 }
2249 
2250 static int print_device_sinks(AVOutputFormat *fmt, AVDictionary *opts)
2251 {
2252  int ret, i;
2253  AVDeviceInfoList *device_list = NULL;
2254 
2255  if (!fmt || !fmt->priv_class || !AV_IS_OUTPUT_DEVICE(fmt->priv_class->category))
2256  return AVERROR(EINVAL);
2257 
2258  printf("Auto-detected sinks for %s:\n", fmt->name);
2259  if (!fmt->get_device_list) {
2260  ret = AVERROR(ENOSYS);
2261  printf("Cannot list sinks. Not implemented.\n");
2262  goto fail;
2263  }
2264 
2265  if ((ret = avdevice_list_output_sinks(fmt, NULL, opts, &device_list)) < 0) {
2266  printf("Cannot list sinks.\n");
2267  goto fail;
2268  }
2269 
2270  for (i = 0; i < device_list->nb_devices; i++) {
2271  printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2272  device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2273  }
2274 
2275  fail:
2276  avdevice_free_list_devices(&device_list);
2277  return ret;
2278 }
2279 
2280 static int show_sinks_sources_parse_arg(const char *arg, char **dev, AVDictionary **opts)
2281 {
2282  int ret;
2283  if (arg) {
2284  char *opts_str = NULL;
2285  av_assert0(dev && opts);
2286  *dev = av_strdup(arg);
2287  if (!*dev)
2288  return AVERROR(ENOMEM);
2289  if ((opts_str = strchr(*dev, ','))) {
2290  *(opts_str++) = '\0';
2291  if (opts_str[0] && ((ret = av_dict_parse_string(opts, opts_str, "=", ":", 0)) < 0)) {
2292  av_freep(dev);
2293  return ret;
2294  }
2295  }
2296  } else
2297  printf("\nDevice name is not provided.\n"
2298  "You can pass devicename[,opt1=val1[,opt2=val2...]] as an argument.\n\n");
2299  return 0;
2300 }
2301 
2302 int show_sources(void *optctx, const char *opt, const char *arg)
2303 {
2304  AVInputFormat *fmt = NULL;
2305  char *dev = NULL;
2306  AVDictionary *opts = NULL;
2307  int ret = 0;
2308  int error_level = av_log_get_level();
2309 
2311 
2312  if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2313  goto fail;
2314 
2315  do {
2316  fmt = av_input_audio_device_next(fmt);
2317  if (fmt) {
2318  if (!strcmp(fmt->name, "lavfi"))
2319  continue; //it's pointless to probe lavfi
2320  if (dev && !av_match_name(dev, fmt->name))
2321  continue;
2322  print_device_sources(fmt, opts);
2323  }
2324  } while (fmt);
2325  do {
2326  fmt = av_input_video_device_next(fmt);
2327  if (fmt) {
2328  if (dev && !av_match_name(dev, fmt->name))
2329  continue;
2330  print_device_sources(fmt, opts);
2331  }
2332  } while (fmt);
2333  fail:
2334  av_dict_free(&opts);
2335  av_free(dev);
2336  av_log_set_level(error_level);
2337  return ret;
2338 }
2339 
2340 int show_sinks(void *optctx, const char *opt, const char *arg)
2341 {
2342  AVOutputFormat *fmt = NULL;
2343  char *dev = NULL;
2344  AVDictionary *opts = NULL;
2345  int ret = 0;
2346  int error_level = av_log_get_level();
2347 
2349 
2350  if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2351  goto fail;
2352 
2353  do {
2354  fmt = av_output_audio_device_next(fmt);
2355  if (fmt) {
2356  if (dev && !av_match_name(dev, fmt->name))
2357  continue;
2358  print_device_sinks(fmt, opts);
2359  }
2360  } while (fmt);
2361  do {
2362  fmt = av_output_video_device_next(fmt);
2363  if (fmt) {
2364  if (dev && !av_match_name(dev, fmt->name))
2365  continue;
2366  print_device_sinks(fmt, opts);
2367  }
2368  } while (fmt);
2369  fail:
2370  av_dict_free(&opts);
2371  av_free(dev);
2372  av_log_set_level(error_level);
2373  return ret;
2374 }
2375 
2376 #endif
static enum AVCodecID codec_ids[]
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:925
static double val(void *priv, double ch)
Definition: aeval.c:76
Macro definitions for various function/variable attributes.
#define av_unused
Definition: attributes.h:131
uint8_t
int32_t
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
Main libavdevice API header.
Main libavfilter public API header.
Main libavformat public API header.
const char * avio_enum_protocols(void **opaque, int output)
Iterate through names of available protocols.
Definition: protocols.c:114
const AVClass * avio_protocol_get_class(const char *name)
Get AVClass by names of available protocols.
Definition: protocols.c:129
external API header
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
Definition: bprint.c:69
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
void av_bprint_chars(AVBPrint *buf, char c, unsigned n)
Append char c n times to a print buffer.
Definition: bprint.c:140
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
Definition: bprint.h:185
#define AV_BPRINT_SIZE_AUTOMATIC
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define fc(width, name, range_min, range_max)
Definition: cbs_av1.c:551
#define us(width, name, range_min, range_max, subs,...)
Definition: cbs_h2645.c:278
#define s(width, name)
Definition: cbs_vp9.c:257
#define f(width, name)
Definition: cbs_vp9.c:255
static av_always_inline void filter(int16_t *output, ptrdiff_t out_stride, const int16_t *low, ptrdiff_t low_stride, const int16_t *high, ptrdiff_t high_stride, int len, int clip)
Definition: cfhddsp.c:27
uint64_t layout
#define fail()
Definition: checkasm.h:133
void exit_program(int ret)
Wraps exit with a program-specific cleanup routine.
Definition: cmdutils.c:133
static int match_group_separator(const OptionGroupDef *groups, int nb_groups, const char *opt)
Definition: cmdutils.c:638
int show_decoders(void *optctx, const char *opt, const char *arg)
Print a listing containing all the decoders supported by the program.
Definition: cmdutils.c:1645
int hide_banner
Definition: cmdutils.c:74
int opt_loglevel(void *optctx, const char *opt, const char *arg)
Set the libav* libraries log level.
Definition: cmdutils.c:867
AVDictionary * resample_opts
Definition: cmdutils.c:70
void show_help_children(const AVClass *class, int flags)
Show help for all options with given flags in class and all its children.
Definition: cmdutils.c:203
int opt_cpuflags(void *optctx, const char *opt, const char *arg)
Override the cpuflags.
Definition: cmdutils.c:855
static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
Definition: cmdutils.c:285
void init_dynload(void)
Initialize dynamic library loading.
Definition: cmdutils.c:117
int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options)
Parse one given option.
Definition: cmdutils.c:346
int show_help(void *optctx, const char *opt, const char *arg)
Generic -h handler common to all fftools.
Definition: cmdutils.c:1996
void show_help_options(const OptionDef *options, const char *msg, int req_flags, int rej_flags, int alt_flags)
Print help for all options matching specified flags.
Definition: cmdutils.c:174
static const OptionDef * find_option(const OptionDef *po, const char *name)
Definition: cmdutils.c:216
static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
Definition: cmdutils.c:101
static void show_help_bsf(const char *name)
Definition: cmdutils.c:1977
int opt_default(void *optctx, const char *opt, const char *arg)
Fallback for options that are not explicitly handled, these will be parsed through AVOptions.
Definition: cmdutils.c:541
void print_error(const char *filename, int err)
Print an error message to stderr, indicating filename and a human readable description of the error c...
Definition: cmdutils.c:1084
static void show_help_codec(const char *name, int encoder)
Definition: cmdutils.c:1816
int show_filters(void *optctx, const char *opt, const char *arg)
Print a listing containing all the filters supported by the program.
Definition: cmdutils.c:1684
static void show_help_demuxer(const char *name)
Definition: cmdutils.c:1852
int show_sample_fmts(void *optctx, const char *opt, const char *arg)
Print a listing containing all the sample formats supported by the program.
Definition: cmdutils.c:1807
#define SHOW_CONFIG
Definition: cmdutils.c:1098
AVDictionary * swr_opts
Definition: cmdutils.c:69
int read_yesno(void)
Return a positive value if a line read from standard input starts with [yY], otherwise return 0.
Definition: cmdutils.c:2034
static int report_file_level
Definition: cmdutils.c:73
static void print_codecs(int encoder)
Definition: cmdutils.c:1606
show_muxdemuxers
Definition: cmdutils.c:76
@ SHOW_DEFAULT
Definition: cmdutils.c:77
@ SHOW_DEMUXERS
Definition: cmdutils.c:78
@ SHOW_MUXERS
Definition: cmdutils.c:79
#define SHOW_VERSION
Definition: cmdutils.c:1097
FILE * get_preset_file(char *filename, size_t filename_size, const char *preset_name, int is_path, const char *codec_name)
Get a file corresponding to a preset file.
Definition: cmdutils.c:2045
int show_muxers(void *optctx, const char *opt, const char *arg)
Print a listing containing all the muxers supported by the program (including devices).
Definition: cmdutils.c:1360
int locate_option(int argc, char **argv, const OptionDef *options, const char *optname)
Return index of option opt in argv or 0 if not found.
Definition: cmdutils.c:443
#define INDENT
Definition: cmdutils.c:1096
static int compare_codec_desc(const void *a, const void *b)
Definition: cmdutils.c:1507
int show_bsfs(void *optctx, const char *opt, const char *arg)
Print a listing containing all the bit stream filters supported by the program.
Definition: cmdutils.c:1657
static FILE * report_file
Definition: cmdutils.c:72
void * grow_array(void *array, int elem_size, int *size, int new_size)
Realloc array to hold new_size elements of elem_size.
Definition: cmdutils.c:2181
static int write_option(void *optctx, const OptionDef *po, const char *opt, const char *arg)
Definition: cmdutils.c:291
static void print_all_libs_info(int flags, int level)
Definition: cmdutils.c:1130
AVDictionary ** setup_find_stream_info_opts(AVFormatContext *s, AVDictionary *codec_opts)
Setup AVCodecContext options for avformat_find_stream_info().
Definition: cmdutils.c:2161
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the given stream matches a stream specifier.
Definition: cmdutils.c:2095
static void(* program_exit)(int ret)
Definition: cmdutils.c:126
static void init_parse_context(OptionParseContext *octx, const OptionGroupDef *groups, int nb_groups)
Definition: cmdutils.c:701
static void add_opt(OptionParseContext *octx, const OptionDef *opt, const char *key, const char *val)
Definition: cmdutils.c:689
#define FLAGS
Definition: cmdutils.c:540
static void print_buildconf(int flags, int level)
Definition: cmdutils.c:1157
#define PRINT_LIB_INFO(libname, LIBNAME, flags, level)
Definition: cmdutils.c:1101
AVDictionary * filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id, AVFormatContext *s, AVStream *st, const AVCodec *codec)
Filter out options for given codec.
Definition: cmdutils.c:2103
int show_layouts(void *optctx, const char *opt, const char *arg)
Print a listing containing all the standard channel layouts supported by the program.
Definition: cmdutils.c:1778
static void dump_argument(const char *a)
Definition: cmdutils.c:469
int show_encoders(void *optctx, const char *opt, const char *arg)
Print a listing containing all the encoders supported by the program.
Definition: cmdutils.c:1651
#define GET_ARG(arg)
static void finish_group(OptionParseContext *octx, int group_idx, const char *arg)
Definition: cmdutils.c:658
int show_version(void *optctx, const char *opt, const char *arg)
Print the version of the program to stdout.
Definition: cmdutils.c:1194
static void expand_filename_template(AVBPrint *bp, const char *template, struct tm *tm)
Definition: cmdutils.c:946
void parse_loglevel(int argc, char **argv, const OptionDef *options)
Find the '-loglevel' option in the command line args and apply it.
Definition: cmdutils.c:502
static void show_help_protocol(const char *name)
Definition: cmdutils.c:1870
static const AVCodec * next_codec_for_id(enum AVCodecID id, void **iter, int encoder)
Definition: cmdutils.c:1495
void parse_options(void *optctx, int argc, char **argv, const OptionDef *options, void(*parse_arg_function)(void *, const char *))
Definition: cmdutils.c:379
static char get_media_type_char(enum AVMediaType type)
Definition: cmdutils.c:1483
void uninit_parse_context(OptionParseContext *octx)
Free all allocated memory in an OptionParseContext.
Definition: cmdutils.c:723
int split_commandline(OptionParseContext *octx, int argc, char *argv[], const OptionDef *options, const OptionGroupDef *groups, int nb_groups)
Split the commandline into an intermediate form convenient for further processing.
Definition: cmdutils.c:749
double get_rotation(AVStream *st)
Definition: cmdutils.c:2200
void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
Trivial log callback.
Definition: cmdutils.c:96
AVDictionary * format_opts
Definition: cmdutils.c:70
void show_banner(int argc, char **argv, const OptionDef *options)
Print the program banner to stderr.
Definition: cmdutils.c:1183
static void show_help_muxer(const char *name)
Definition: cmdutils.c:1888
int opt_timelimit(void *optctx, const char *opt, const char *arg)
Limit the execution time.
Definition: cmdutils.c:1071
int show_license(void *optctx, const char *opt, const char *arg)
Print the license of the program to stdout.
Definition: cmdutils.c:1211
static int warned_cfg
Definition: cmdutils.c:1094
int show_codecs(void *optctx, const char *opt, const char *arg)
Print a listing containing all the codecs supported by the program.
Definition: cmdutils.c:1550
int show_buildconf(void *optctx, const char *opt, const char *arg)
Print the build configuration of the program to stdout.
Definition: cmdutils.c:1203
int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration)
Parse a string specifying a time and return its corresponding value as a number of microseconds.
Definition: cmdutils.c:162
void register_exit(void(*cb)(int ret))
Register a program-specific cleanup routine.
Definition: cmdutils.c:128
static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only, int muxdemuxers)
Definition: cmdutils.c:1292
AVDictionary * codec_opts
Definition: cmdutils.c:70
int show_devices(void *optctx, const char *opt, const char *arg)
Print a listing containing all the devices supported by the program.
Definition: cmdutils.c:1370
static void print_program_info(int flags, int level)
Definition: cmdutils.c:1143
static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
Definition: cmdutils.c:1516
#define SHOW_COPYRIGHT
Definition: cmdutils.c:1099
void uninit_opts(void)
Uninitialize the cmdutils option system, in particular free the *_opts contexts and their contents.
Definition: cmdutils.c:87
static void print_codec(const AVCodec *c)
Definition: cmdutils.c:1388
int show_formats(void *optctx, const char *opt, const char *arg)
Print a listing containing all the formats supported by the program (including devices).
Definition: cmdutils.c:1355
#define sws_isSupportedOutput(x)
static int is_device(const AVClass *avclass)
Definition: cmdutils.c:1285
int show_protocols(void *optctx, const char *opt, const char *arg)
Print a listing containing all the protocols supported by the program.
Definition: cmdutils.c:1669
int parse_optgroup(void *optctx, OptionGroup *g)
Parse an options group and write results into optctx.
Definition: cmdutils.c:410
static const AVOption * opt_find(void *obj, const char *name, const char *unit, int opt_flags, int search_flags)
Definition: cmdutils.c:531
int opt_max_alloc(void *optctx, const char *opt, const char *arg)
Definition: cmdutils.c:1057
static void check_options(const OptionDef *po)
Definition: cmdutils.c:493
int opt_report(void *optctx, const char *opt, const char *arg)
Definition: cmdutils.c:1052
void init_opts(void)
Initialize the cmdutils option system, in particular allocate the *_opts contexts.
Definition: cmdutils.c:82
int show_colors(void *optctx, const char *opt, const char *arg)
Print a listing containing all the color names and values recognized by the program.
Definition: cmdutils.c:1731
double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max)
Parse a string and return its corresponding value as a double.
Definition: cmdutils.c:141
static int init_report(const char *env)
Definition: cmdutils.c:974
#define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name)
Definition: cmdutils.c:1375
int show_pix_fmts(void *optctx, const char *opt, const char *arg)
Print a listing containing all the pixel formats supported by the program.
Definition: cmdutils.c:1745
int show_demuxers(void *optctx, const char *opt, const char *arg)
Print a listing containing all the demuxer supported by the program (including devices).
Definition: cmdutils.c:1365
#define sws_isSupportedInput(x)
AVDictionary * sws_dict
Definition: cmdutils.c:68
static void print_codecs_for_id(enum AVCodecID id, int encoder)
Definition: cmdutils.c:1537
const char program_name[]
program name, defined by the program for show_version().
Definition: ffmpeg.c:109
#define GET_SAMPLE_RATE_NAME(rate)
Definition: cmdutils.h:631
#define OPT_SPEC
Definition: cmdutils.h:175
#define OPT_BOOL
Definition: cmdutils.h:162
#define media_type_string
Definition: cmdutils.h:617
#define OPT_INT64
Definition: cmdutils.h:170
#define OPT_PERFILE
Definition: cmdutils.h:173
#define GET_CODEC_NAME(id)
Definition: cmdutils.h:625
#define OPT_INT
Definition: cmdutils.h:167
#define OPT_FLOAT
Definition: cmdutils.h:168
#define OPT_INPUT
Definition: cmdutils.h:178
#define GET_PIX_FMT_NAME(pix_fmt)
Definition: cmdutils.h:622
#define OPT_DOUBLE
Definition: cmdutils.h:177
void show_help_default(const char *opt, const char *arg)
Per-fftool specific help handler.
Definition: ffmpeg_opt.c:3228
#define OPT_STRING
Definition: cmdutils.h:164
#define GET_CH_LAYOUT_DESC(ch_layout)
Definition: cmdutils.h:639
#define GROW_ARRAY(array, nb_elems)
Definition: cmdutils.h:619
#define GET_SAMPLE_FMT_NAME(sample_fmt)
Definition: cmdutils.h:628
#define OPT_EXIT
Definition: cmdutils.h:171
#define OPT_OUTPUT
Definition: cmdutils.h:179
#define OPT_TIME
Definition: cmdutils.h:176
const int program_birth_year
program birth year, defined by the program for show_banner()
Definition: ffmpeg.c:110
#define OPT_OFFSET
Definition: cmdutils.h:174
#define HAS_ARG
Definition: cmdutils.h:161
#define FFMIN(a, b)
Definition: common.h:105
#define FFMAX(a, b)
Definition: common.h:103
#define FFDIFFSIGN(x, y)
Comparator.
Definition: common.h:101
#define FFMPEG_CONFIGURATION
Definition: config.h:4
#define CONFIG_THIS_YEAR
Definition: config.h:6
#define FFMPEG_DATADIR
Definition: config.h:7
#define CC_IDENT
Definition: config.h:9
#define NULL
Definition: coverity.c:32
void av_force_cpu_flags(int arg)
Disables cpu detection and forces the specified flags.
Definition: cpu.c:67
int av_parse_cpu_caps(unsigned *flags, const char *s)
Parse CPU caps from a string and update the given AV_CPU_* flags based on that.
Definition: cpu.c:196
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:95
static __device__ float fabs(float a)
Definition: cuda_runtime.h:182
static __device__ float floor(float a)
Definition: cuda_runtime.h:173
#define max(a, b)
Definition: cuda_runtime.h:33
static struct codec_string codecs[]
static const uint16_t channel_layouts[7]
Definition: dca_lbr.c:114
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
static enum AVPixelFormat pix_fmt
Public dictionary API.
Display matrix.
static void encode(AVCodecContext *ctx, AVFrame *frame, AVPacket *pkt, FILE *output)
Definition: encode_audio.c:95
double av_strtod(const char *numstr, char **tail)
Parse the string in numstr and return its value as a double.
Definition: eval.c:106
simple arithmetic expression evaluator
const OptionDef options[]
#define FFMPEG_VERSION
Definition: ffversion.h:4
int av_opt_get_key_value(const char **ropts, const char *key_val_sep, const char *pairs_sep, unsigned flags, char **rkey, char **rval)
Extract a key-value pair from the beginning of a string.
Definition: opt.c:1537
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
Definition: opt.h:560
#define AV_OPT_SEARCH_FAKE_OBJ
The obj passed to av_opt_find() is fake – only a double pointer to AVClass instead of a required poin...
Definition: opt.h:568
const AVOption * av_opt_find(void *obj, const char *name, const char *unit, int opt_flags, int search_flags)
Look for an option in an object.
Definition: opt.c:1661
FF_ENABLE_DEPRECATION_WARNINGS const AVClass * av_opt_child_class_iterate(const AVClass *parent, void **iter)
Iterate over potential AVOptions-enabled children of parent.
Definition: opt.c:1731
int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
Show the obj options.
Definition: opt.c:1346
int av_get_standard_channel_layout(unsigned index, uint64_t *layout, const char **name)
Get the value and name of a standard channel layout.
const char * av_get_channel_description(uint64_t channel)
Get the description of a given channel.
const char * av_get_channel_name(uint64_t channel)
Get the name of a given channel.
#define AV_CODEC_CAP_DRAW_HORIZ_BAND
Decoder can use draw_horiz_band callback.
Definition: codec.h:44
#define AV_CODEC_PROP_LOSSY
Codec supports lossy compression.
Definition: codec_desc.h:78
const AVCodecDescriptor * avcodec_descriptor_get_by_name(const char *name)
Definition: codec_desc.c:3516
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
Definition: allcodecs.c:946
#define AV_CODEC_CAP_TRUNCATED
Definition: codec.h:53
int av_codec_is_encoder(const AVCodec *codec)
Definition: utils.c:74
#define AV_CODEC_CAP_OTHER_THREADS
Codec supports multithreading through a method other than slice- or frame-level multithreading.
Definition: codec.h:122
#define AV_CODEC_CAP_AVOID_PROBING
Decoder is not a preferred choice for probing.
Definition: codec.h:139
#define AV_CODEC_CAP_VARIABLE_FRAME_SIZE
Audio encoder supports receiving a different number of samples in each call.
Definition: codec.h:129
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: codec.h:77
const AVCodecHWConfig * avcodec_get_hw_config(const AVCodec *codec, int index)
Retrieve supported hardware configurations for a codec.
Definition: utils.c:910
#define AV_CODEC_PROP_LOSSLESS
Codec supports lossless compression.
Definition: codec_desc.h:82
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
#define AV_CODEC_CAP_SUBFRAMES
Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time,...
Definition: codec.h:95
int av_codec_is_decoder(const AVCodec *codec)
Definition: utils.c:79
#define AV_CODEC_PROP_INTRA_ONLY
Codec uses only intra compression.
Definition: codec_desc.h:72
AVCodec * avcodec_find_decoder_by_name(const char *name)
Find a registered decoder with the specified name.
Definition: allcodecs.c:974
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:112
const AVCodec * av_codec_iterate(void **opaque)
Iterate over all registered codecs.
Definition: allcodecs.c:859
const AVCodecDescriptor * avcodec_descriptor_next(const AVCodecDescriptor *prev)
Iterate over all codec descriptors known to libavcodec.
Definition: codec_desc.c:3507
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: allcodecs.c:941
AVCodec * avcodec_find_encoder_by_name(const char *name)
Find a registered encoder with the specified name.
Definition: allcodecs.c:969
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:46
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:3501
#define AV_CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
Definition: codec.h:104
#define AV_CODEC_CAP_PARAM_CHANGE
Codec supports changed parameters at any point.
Definition: codec.h:116
#define AV_CODEC_CAP_HARDWARE
Codec is backed by a hardware implementation.
Definition: codec.h:157
#define AV_CODEC_CAP_SMALL_LAST_FRAME
Codec can be fed a final frame with a smaller size.
Definition: codec.h:82
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:108
const AVBitStreamFilter * av_bsf_get_by_name(const char *name)
const AVClass * avcodec_get_class(void)
Get the AVClass for AVCodecContext.
Definition: options.c:311
#define AV_CODEC_CAP_HYBRID
Codec is potentially backed by a hardware implementation, but not necessarily.
Definition: codec.h:164
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: codec.h:100
const AVBitStreamFilter * av_bsf_iterate(void **opaque)
Iterate over all registered bitstream filters.
@ AV_CODEC_ID_NONE
Definition: codec_id.h:47
@ AV_PKT_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: packet.h:108
int avdevice_list_input_sources(AVInputFormat *device, const char *device_name, AVDictionary *device_options, AVDeviceInfoList **device_list)
List devices.
Definition: avdevice.c:123
int avdevice_list_output_sinks(AVOutputFormat *device, const char *device_name, AVDictionary *device_options, AVDeviceInfoList **device_list)
Definition: avdevice.c:134
AVInputFormat * av_input_video_device_next(AVInputFormat *d)
Video input devices iterator.
Definition: alldevices.c:128
AVInputFormat * av_input_audio_device_next(AVInputFormat *d)
Audio input devices iterator.
Definition: alldevices.c:123
void avdevice_free_list_devices(AVDeviceInfoList **device_list)
Convenient function to free result of avdevice_list_devices().
Definition: avdevice.c:145
AVOutputFormat * av_output_video_device_next(AVOutputFormat *d)
Video output devices iterator.
Definition: alldevices.c:138
AVOutputFormat * av_output_audio_device_next(AVOutputFormat *d)
Audio output devices iterator.
Definition: alldevices.c:133
const AVOutputFormat * av_muxer_iterate(void **opaque)
Iterate over all registered muxers.
Definition: allformats.c:541
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, size_t *size)
Get side information from stream.
const AVClass * avformat_get_class(void)
Get the AVClass for AVFormatContext.
Definition: options.c:246
const AVInputFormat * av_demuxer_iterate(void **opaque)
Iterate over all registered demuxers.
Definition: allformats.c:558
ff_const59 AVInputFormat * av_find_input_format(const char *short_name)
Find AVInputFormat based on the short name of the input format.
Definition: format.c:118
ff_const59 AVOutputFormat * av_guess_format(const char *short_name, const char *filename, const char *mime_type)
Return the output format in the list of registered output formats which best matches the provided par...
Definition: format.c:51
int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the stream st contained in s is matched by the stream specifier spec.
Definition: utils.c:5326
const AVFilter * av_filter_iterate(void **opaque)
Iterate over all registered filters.
Definition: allfilters.c:534
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
Definition: avfilter.h:112
enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx)
Get the type of an AVFilterPad.
Definition: avfilter.c:1055
const char * avfilter_pad_get_name(const AVFilterPad *pads, int pad_idx)
Get the name of an AVFilterPad.
Definition: avfilter.c:1050
#define AVFILTER_FLAG_SUPPORT_TIMELINE
Handy mask to test whether the filter supports or no the timeline feature (internally or generically)...
Definition: avfilter.h:139
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
const AVFilter * avfilter_get_by_name(const char *name)
Get a filter definition matching the given name.
Definition: allfilters.c:545
int avfilter_pad_count(const AVFilterPad *pads)
Get the number of elements in a NULL-terminated array of AVFilterPads (e.g.
Definition: avfilter.c:561
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
Definition: avfilter.h:106
attribute_deprecated const AVClass * avresample_get_class(void)
Definition: options.c:110
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:203
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key,...
Definition: dict.h:70
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
int av_dict_parse_string(AVDictionary **pm, const char *str, const char *key_val_sep, const char *pairs_sep, int flags)
Parse the key/value pairs list and add the parsed entries to a dictionary.
Definition: dict.c:180
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
#define AVUNERROR(e)
Definition: error.h:44
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
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
#define AVERROR(e)
Definition: error.h:43
#define AVERROR_OPTION_NOT_FOUND
Option not found.
Definition: error.h:61
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:220
#define AV_LOG_PANIC
Something went really wrong and we will crash now.
Definition: log.h:181
#define AV_LOG_QUIET
Print no output.
Definition: log.h:176
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_FATAL
Something went wrong and recovery is not possible.
Definition: log.h:188
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:210
#define AV_LOG_INFO
Standard information.
Definition: log.h:205
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
void av_log_set_callback(void(*callback)(void *, int, const char *, va_list))
Set the logging callback.
Definition: log.c:455
void av_log_set_level(int level)
Set the log level.
Definition: log.c:440
void av_log_default_callback(void *ptr, int level, const char *fmt, va_list vl)
Default logging callback.
Definition: log.c:346
#define AV_LOG_SKIP_REPEATED
Skip repeated messages, this requires the user app to use av_log() instead of (f)printf as the 2 woul...
Definition: log.h:384
int av_log_get_flags(void)
Definition: log.c:450
#define AV_LOG_PRINT_LEVEL
Include the log severity in messages originating from codecs.
Definition: log.h:392
int av_log_get_level(void)
Get the current log level.
Definition: log.c:435
void av_log_format_line(void *ptr, int level, const char *fmt, va_list vl, char *line, int line_size, int *print_prefix)
Format a line of log the same way as the default callback.
Definition: log.c:328
void av_log_set_flags(int arg)
Definition: log.c:445
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Allocate, reallocate, or free an array.
Definition: mem.c:198
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:245
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:190
void av_max_alloc(size_t max)
Set the maximum size that may be allocated in one block.
Definition: mem.c:73
static void * av_x_if_null(const void *p, const void *x)
Return x default pointer in case p is NULL.
Definition: avutil.h:308
AVMediaType
Definition: avutil.h:199
@ AVMEDIA_TYPE_ATTACHMENT
Opaque data information usually sparse.
Definition: avutil.h:205
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
@ AVMEDIA_TYPE_DATA
Opaque data information usually continuous.
Definition: avutil.h:203
char * av_get_sample_fmt_string(char *buf, int buf_size, enum AVSampleFormat sample_fmt)
Generate a string corresponding to the sample format with sample_fmt, or a header if sample_fmt is ne...
Definition: samplefmt.c:93
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
@ AV_SAMPLE_FMT_NB
Number of sample formats. DO NOT USE if linking dynamically.
Definition: samplefmt.h:74
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:59
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 av_match_name(const char *name, const char *names)
Match instances of a name in a comma-separated list of names.
Definition: avstring.c:353
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
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 av_const int av_toupper(int c)
Locale-independent conversion of ASCII characters to uppercase.
Definition: avstring.h:236
double av_display_rotation_get(const int32_t matrix[9])
Extract the rotation component of the transformation matrix.
Definition: display.c:34
const AVClass * sws_get_class(void)
Get the AVClass for swsContext.
Definition: options.c:95
struct SwsContext * sws_alloc_context(void)
Allocate an empty SwsContext.
Definition: utils.c:1093
void sws_freeContext(struct SwsContext *swsContext)
Free the swscaler context swsContext.
Definition: utils.c:2337
const AVClass * swr_get_class(void)
Get the AVClass for SwrContext.
Definition: options.c:144
av_cold void swr_free(SwrContext **ss)
Free the given SwrContext and set the pointer to NULL.
Definition: swresample.c:137
av_cold struct SwrContext * swr_alloc(void)
Allocate SwrContext.
Definition: options.c:149
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:465
const char * av_hwdevice_get_type_name(enum AVHWDeviceType type)
Get the string name of an AVHWDeviceType.
Definition: hwcontext.c:92
cl_device_type type
const char * key
misc image utilities
int i
Definition: input.c:407
const char * arg
Definition: jacosubdec.c:66
Libavutil version macros.
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:309
Replacements for frequently missing libm functions.
static av_always_inline av_const double round(double x)
Definition: libm.h:444
const char * desc
Definition: libsvtav1.c:79
#define AV_IS_OUTPUT_DEVICE(category)
Definition: log.h:55
#define AV_IS_INPUT_DEVICE(category)
Definition: log.h:50
#define INFINITY
Definition: mathematics.h:67
AVOptions.
#define AV_OPT_FLAG_FILTERING_PARAM
a generic parameter which can be set by the user for filtering
Definition: opt.h:294
#define AV_OPT_FLAG_BSF_PARAM
a generic parameter which can be set by the user for bit stream filtering
Definition: opt.h:292
#define AV_OPT_FLAG_AUDIO_PARAM
Definition: opt.h:280
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:279
#define AV_OPT_FLAG_VIDEO_PARAM
Definition: opt.h:281
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:278
#define AV_OPT_FLAG_SUBTITLE_PARAM
Definition: opt.h:282
const char * av_get_known_color_name(int color_idx, const uint8_t **rgbp)
Get the name of a color from the internal table of hard-coded named colors.
Definition: parseutils.c:434
int av_parse_time(int64_t *timeval, const char *timestr, int duration)
Parse timestr and return in *time a corresponding number of microseconds.
Definition: parseutils.c:587
misc parsing utilities
enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc)
Definition: pixdesc.c:2592
const AVPixFmtDescriptor * av_pix_fmt_desc_next(const AVPixFmtDescriptor *prev)
Iterate over all pixel format descriptors known to libavutil.
Definition: pixdesc.c:2580
int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel used by the pixel format described by pixdesc.
Definition: pixdesc.c:2525
#define AV_PIX_FMT_FLAG_BITSTREAM
All values of a component are bit-wise packed end to end.
Definition: pixdesc.h:136
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:140
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
const char * class
Definition: pixdesc_query.c:27
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
external API header
const char * name
Definition: qsvenc.c:46
typedef void(RENAME(mix_any_func_type))
static const SheerTable rgb[2]
#define FF_ARRAY_ELEMS(a)
#define snprintf
Definition: snprintf.h:34
const AVClass * priv_class
A class for the private data, used to declare bitstream filter private AVOptions.
Definition: bsf.h:117
const char * name
Definition: bsf.h:99
Describe the class of an AVClass context structure.
Definition: log.h:67
AVClassCategory category
Category used for visualization (like color) This is only set if the category is equal for all object...
Definition: log.h:133
This struct describes the properties of a single codec described by an AVCodecID.
Definition: codec_desc.h:38
enum AVHWDeviceType device_type
The device type associated with the configuration.
Definition: codec.h:464
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
AVCodec.
Definition: codec.h:197
const AVClass * priv_class
AVClass for the private context.
Definition: codec.h:223
const char * long_name
Descriptive name for the codec, meant to be more human readable than name.
Definition: codec.h:209
const char * name
Name of the codec implementation.
Definition: codec.h:204
int capabilities
Codec capabilities.
Definition: codec.h:216
List of devices.
Definition: avdevice.h:465
int nb_devices
number of autodetected devices
Definition: avdevice.h:467
int default_device
index of default device or -1 if no default
Definition: avdevice.h:468
AVDeviceInfo ** devices
list of autodetected devices
Definition: avdevice.h:466
char * device_description
human friendly name
Definition: avdevice.h:459
char * device_name
device name, format depends on device
Definition: avdevice.h:458
char * key
Definition: dict.h:82
char * value
Definition: dict.h:83
A filter pad used for either input or output.
Definition: internal.h:54
Filter definition.
Definition: avfilter.h:145
Format I/O context.
Definition: avformat.h:1232
const char * long_name
Descriptive name for the format, meant to be more human-readable than name.
Definition: avformat.h:652
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:645
int(* get_device_list)(struct AVFormatContext *s, struct AVDeviceInfoList *device_list)
Returns device list with it properties.
Definition: avformat.h:772
const char * extensions
If extensions are defined, then no probe is done.
Definition: avformat.h:666
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:670
AVOption.
Definition: opt.h:248
int flags
Definition: opt.h:277
const char * extensions
comma-separated filename extensions
Definition: avformat.h:499
enum AVCodecID video_codec
default video codec
Definition: avformat.h:502
enum AVCodecID audio_codec
default audio codec
Definition: avformat.h:501
const char * long_name
Descriptive name for the format, meant to be more human-readable than name.
Definition: avformat.h:497
const char * name
Definition: avformat.h:491
const char * mime_type
Definition: avformat.h:498
int(* get_device_list)(struct AVFormatContext *s, struct AVDeviceInfoList *device_list)
Returns device list with it properties.
Definition: avformat.h:592
enum AVCodecID subtitle_codec
default subtitle codec
Definition: avformat.h:503
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:519
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
const char * name
Definition: pixdesc.h:82
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
Stream structure.
Definition: avformat.h:873
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
union OptionDef::@1 u
int flags
Definition: cmdutils.h:160
size_t off
Definition: cmdutils.h:183
const char * name
Definition: cmdutils.h:159
const char * argname
Definition: cmdutils.h:186
void * dst_ptr
Definition: cmdutils.h:181
const char * help
Definition: cmdutils.h:185
int(* func_arg)(void *, const char *, const char *)
Definition: cmdutils.h:182
const char * sep
Option to be used as group separator.
Definition: cmdutils.h:300
A list of option groups that all have the same group type (e.g.
Definition: cmdutils.h:326
OptionGroup * groups
Definition: cmdutils.h:329
const OptionGroupDef * group_def
Definition: cmdutils.h:327
int nb_opts
Definition: cmdutils.h:313
const OptionGroupDef * group_def
Definition: cmdutils.h:309
AVDictionary * codec_opts
Definition: cmdutils.h:315
AVDictionary * swr_opts
Definition: cmdutils.h:319
Option * opts
Definition: cmdutils.h:312
AVDictionary * sws_dict
Definition: cmdutils.h:318
const char * arg
Definition: cmdutils.h:310
AVDictionary * format_opts
Definition: cmdutils.h:316
AVDictionary * resample_opts
Definition: cmdutils.h:317
OptionGroup global_opts
Definition: cmdutils.h:334
OptionGroupList * groups
Definition: cmdutils.h:336
OptionGroup cur_group
Definition: cmdutils.h:340
An option extracted from the commandline.
Definition: cmdutils.h:287
const char * key
Definition: cmdutils.h:289
const OptionDef * opt
Definition: cmdutils.h:288
const char * val
Definition: cmdutils.h:290
The libswresample context.
Definition: graph2dot.c:48
Definition: rpzaenc.c:58
uint8_t level
Definition: svq3.c:206
libswresample public header
static int swscale(SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
Definition: swscale.c:238
external API header
#define av_free(p)
#define av_freep(p)
#define av_log(a,...)
static void error(const char *err)
static uint8_t tmp[11]
Definition: aes_ctr.c:27
static int array[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:106
AVDictionary * opts
Definition: movenc.c:50
int size
#define va_copy(dst, src)
Definition: va_copy.h:31
enum AVCodecID codec_id
Definition: vaapi_decode.c:369
const char * b
Definition: vf_curves.c:118
const char * g
Definition: vf_curves.c:117
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:215
static const uint8_t offset[127][2]
Definition: vf_spp.c:107
float min
uint8_t base
Definition: vp3data.h:141
static double c[64]