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cmdutils.c
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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/avassert.h"
42 #include "libavutil/avstring.h"
43 #include "libavutil/bprint.h"
44 #include "libavutil/display.h"
45 #include "libavutil/mathematics.h"
46 #include "libavutil/imgutils.h"
47 #include "libavutil/libm.h"
48 #include "libavutil/parseutils.h"
49 #include "libavutil/pixdesc.h"
50 #include "libavutil/eval.h"
51 #include "libavutil/dict.h"
52 #include "libavutil/opt.h"
53 #include "libavutil/cpu.h"
54 #include "libavutil/ffversion.h"
55 #include "cmdutils.h"
56 #if CONFIG_NETWORK
57 #include "libavformat/network.h"
58 #endif
59 #if HAVE_SYS_RESOURCE_H
60 #include <sys/time.h>
61 #include <sys/resource.h>
62 #endif
63 
64 static int init_report(const char *env);
65 
69 
70 static FILE *report_file;
72 int hide_banner = 0;
73 
74 void init_opts(void)
75 {
76  av_dict_set(&sws_dict, "flags", "bicubic", 0);
77 }
78 
79 void uninit_opts(void)
80 {
81  av_dict_free(&swr_opts);
82  av_dict_free(&sws_dict);
83  av_dict_free(&format_opts);
84  av_dict_free(&codec_opts);
85  av_dict_free(&resample_opts);
86 }
87 
88 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
89 {
90  vfprintf(stdout, fmt, vl);
91 }
92 
93 static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
94 {
95  va_list vl2;
96  char line[1024];
97  static int print_prefix = 1;
98 
99  va_copy(vl2, vl);
100  av_log_default_callback(ptr, level, fmt, vl);
101  av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
102  va_end(vl2);
103  if (report_file_level >= level) {
104  fputs(line, report_file);
105  fflush(report_file);
106  }
107 }
108 
109 static void (*program_exit)(int ret);
110 
111 void register_exit(void (*cb)(int ret))
112 {
113  program_exit = cb;
114 }
115 
116 void exit_program(int ret)
117 {
118  if (program_exit)
119  program_exit(ret);
120 
121  exit(ret);
122 }
123 
124 double parse_number_or_die(const char *context, const char *numstr, int type,
125  double min, double max)
126 {
127  char *tail;
128  const char *error;
129  double d = av_strtod(numstr, &tail);
130  if (*tail)
131  error = "Expected number for %s but found: %s\n";
132  else if (d < min || d > max)
133  error = "The value for %s was %s which is not within %f - %f\n";
134  else if (type == OPT_INT64 && (int64_t)d != d)
135  error = "Expected int64 for %s but found %s\n";
136  else if (type == OPT_INT && (int)d != d)
137  error = "Expected int for %s but found %s\n";
138  else
139  return d;
140  av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
141  exit_program(1);
142  return 0;
143 }
144 
145 int64_t parse_time_or_die(const char *context, const char *timestr,
146  int is_duration)
147 {
148  int64_t us;
149  if (av_parse_time(&us, timestr, is_duration) < 0) {
150  av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
151  is_duration ? "duration" : "date", context, timestr);
152  exit_program(1);
153  }
154  return us;
155 }
156 
157 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
158  int rej_flags, int alt_flags)
159 {
160  const OptionDef *po;
161  int first;
162 
163  first = 1;
164  for (po = options; po->name; po++) {
165  char buf[64];
166 
167  if (((po->flags & req_flags) != req_flags) ||
168  (alt_flags && !(po->flags & alt_flags)) ||
169  (po->flags & rej_flags))
170  continue;
171 
172  if (first) {
173  printf("%s\n", msg);
174  first = 0;
175  }
176  av_strlcpy(buf, po->name, sizeof(buf));
177  if (po->argname) {
178  av_strlcat(buf, " ", sizeof(buf));
179  av_strlcat(buf, po->argname, sizeof(buf));
180  }
181  printf("-%-17s %s\n", buf, po->help);
182  }
183  printf("\n");
184 }
185 
186 void show_help_children(const AVClass *class, int flags)
187 {
188  const AVClass *child = NULL;
189  if (class->option) {
190  av_opt_show2(&class, NULL, flags, 0);
191  printf("\n");
192  }
193 
194  while (child = av_opt_child_class_next(class, child))
195  show_help_children(child, flags);
196 }
197 
198 static const OptionDef *find_option(const OptionDef *po, const char *name)
199 {
200  const char *p = strchr(name, ':');
201  int len = p ? p - name : strlen(name);
202 
203  while (po->name) {
204  if (!strncmp(name, po->name, len) && strlen(po->name) == len)
205  break;
206  po++;
207  }
208  return po;
209 }
210 
211 /* _WIN32 means using the windows libc - cygwin doesn't define that
212  * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
213  * it doesn't provide the actual command line via GetCommandLineW(). */
214 #if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
215 #include <windows.h>
216 #include <shellapi.h>
217 /* Will be leaked on exit */
218 static char** win32_argv_utf8 = NULL;
219 static int win32_argc = 0;
220 
221 /**
222  * Prepare command line arguments for executable.
223  * For Windows - perform wide-char to UTF-8 conversion.
224  * Input arguments should be main() function arguments.
225  * @param argc_ptr Arguments number (including executable)
226  * @param argv_ptr Arguments list.
227  */
228 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
229 {
230  char *argstr_flat;
231  wchar_t **argv_w;
232  int i, buffsize = 0, offset = 0;
233 
234  if (win32_argv_utf8) {
235  *argc_ptr = win32_argc;
236  *argv_ptr = win32_argv_utf8;
237  return;
238  }
239 
240  win32_argc = 0;
241  argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
242  if (win32_argc <= 0 || !argv_w)
243  return;
244 
245  /* determine the UTF-8 buffer size (including NULL-termination symbols) */
246  for (i = 0; i < win32_argc; i++)
247  buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
248  NULL, 0, NULL, NULL);
249 
250  win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
251  argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
252  if (!win32_argv_utf8) {
253  LocalFree(argv_w);
254  return;
255  }
256 
257  for (i = 0; i < win32_argc; i++) {
258  win32_argv_utf8[i] = &argstr_flat[offset];
259  offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
260  &argstr_flat[offset],
261  buffsize - offset, NULL, NULL);
262  }
263  win32_argv_utf8[i] = NULL;
264  LocalFree(argv_w);
265 
266  *argc_ptr = win32_argc;
267  *argv_ptr = win32_argv_utf8;
268 }
269 #else
270 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
271 {
272  /* nothing to do */
273 }
274 #endif /* HAVE_COMMANDLINETOARGVW */
275 
276 static int write_option(void *optctx, const OptionDef *po, const char *opt,
277  const char *arg)
278 {
279  /* new-style options contain an offset into optctx, old-style address of
280  * a global var*/
281  void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
282  (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
283  int *dstcount;
284 
285  if (po->flags & OPT_SPEC) {
286  SpecifierOpt **so = dst;
287  char *p = strchr(opt, ':');
288  char *str;
289 
290  dstcount = (int *)(so + 1);
291  *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
292  str = av_strdup(p ? p + 1 : "");
293  if (!str)
294  return AVERROR(ENOMEM);
295  (*so)[*dstcount - 1].specifier = str;
296  dst = &(*so)[*dstcount - 1].u;
297  }
298 
299  if (po->flags & OPT_STRING) {
300  char *str;
301  str = av_strdup(arg);
302  av_freep(dst);
303  if (!str)
304  return AVERROR(ENOMEM);
305  *(char **)dst = str;
306  } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
307  *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
308  } else if (po->flags & OPT_INT64) {
309  *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
310  } else if (po->flags & OPT_TIME) {
311  *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
312  } else if (po->flags & OPT_FLOAT) {
313  *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
314  } else if (po->flags & OPT_DOUBLE) {
315  *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
316  } else if (po->u.func_arg) {
317  int ret = po->u.func_arg(optctx, opt, arg);
318  if (ret < 0) {
320  "Failed to set value '%s' for option '%s': %s\n",
321  arg, opt, av_err2str(ret));
322  return ret;
323  }
324  }
325  if (po->flags & OPT_EXIT)
326  exit_program(0);
327 
328  return 0;
329 }
330 
331 int parse_option(void *optctx, const char *opt, const char *arg,
332  const OptionDef *options)
333 {
334  const OptionDef *po;
335  int ret;
336 
337  po = find_option(options, opt);
338  if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
339  /* handle 'no' bool option */
340  po = find_option(options, opt + 2);
341  if ((po->name && (po->flags & OPT_BOOL)))
342  arg = "0";
343  } else if (po->flags & OPT_BOOL)
344  arg = "1";
345 
346  if (!po->name)
347  po = find_option(options, "default");
348  if (!po->name) {
349  av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
350  return AVERROR(EINVAL);
351  }
352  if (po->flags & HAS_ARG && !arg) {
353  av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
354  return AVERROR(EINVAL);
355  }
356 
357  ret = write_option(optctx, po, opt, arg);
358  if (ret < 0)
359  return ret;
360 
361  return !!(po->flags & HAS_ARG);
362 }
363 
364 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
365  void (*parse_arg_function)(void *, const char*))
366 {
367  const char *opt;
368  int optindex, handleoptions = 1, ret;
369 
370  /* perform system-dependent conversions for arguments list */
371  prepare_app_arguments(&argc, &argv);
372 
373  /* parse options */
374  optindex = 1;
375  while (optindex < argc) {
376  opt = argv[optindex++];
377 
378  if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
379  if (opt[1] == '-' && opt[2] == '\0') {
380  handleoptions = 0;
381  continue;
382  }
383  opt++;
384 
385  if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
386  exit_program(1);
387  optindex += ret;
388  } else {
389  if (parse_arg_function)
390  parse_arg_function(optctx, opt);
391  }
392  }
393 }
394 
395 int parse_optgroup(void *optctx, OptionGroup *g)
396 {
397  int i, ret;
398 
399  av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
400  g->group_def->name, g->arg);
401 
402  for (i = 0; i < g->nb_opts; i++) {
403  Option *o = &g->opts[i];
404 
405  if (g->group_def->flags &&
406  !(g->group_def->flags & o->opt->flags)) {
407  av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
408  "%s %s -- you are trying to apply an input option to an "
409  "output file or vice versa. Move this option before the "
410  "file it belongs to.\n", o->key, o->opt->help,
411  g->group_def->name, g->arg);
412  return AVERROR(EINVAL);
413  }
414 
415  av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
416  o->key, o->opt->help, o->val);
417 
418  ret = write_option(optctx, o->opt, o->key, o->val);
419  if (ret < 0)
420  return ret;
421  }
422 
423  av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
424 
425  return 0;
426 }
427 
428 int locate_option(int argc, char **argv, const OptionDef *options,
429  const char *optname)
430 {
431  const OptionDef *po;
432  int i;
433 
434  for (i = 1; i < argc; i++) {
435  const char *cur_opt = argv[i];
436 
437  if (*cur_opt++ != '-')
438  continue;
439 
440  po = find_option(options, cur_opt);
441  if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
442  po = find_option(options, cur_opt + 2);
443 
444  if ((!po->name && !strcmp(cur_opt, optname)) ||
445  (po->name && !strcmp(optname, po->name)))
446  return i;
447 
448  if (!po->name || po->flags & HAS_ARG)
449  i++;
450  }
451  return 0;
452 }
453 
454 static void dump_argument(const char *a)
455 {
456  const unsigned char *p;
457 
458  for (p = a; *p; p++)
459  if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
460  *p == '_' || (*p >= 'a' && *p <= 'z')))
461  break;
462  if (!*p) {
463  fputs(a, report_file);
464  return;
465  }
466  fputc('"', report_file);
467  for (p = a; *p; p++) {
468  if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
469  fprintf(report_file, "\\%c", *p);
470  else if (*p < ' ' || *p > '~')
471  fprintf(report_file, "\\x%02x", *p);
472  else
473  fputc(*p, report_file);
474  }
475  fputc('"', report_file);
476 }
477 
478 static void check_options(const OptionDef *po)
479 {
480  while (po->name) {
481  if (po->flags & OPT_PERFILE)
483  po++;
484  }
485 }
486 
487 void parse_loglevel(int argc, char **argv, const OptionDef *options)
488 {
489  int idx = locate_option(argc, argv, options, "loglevel");
490  const char *env;
491 
492  check_options(options);
493 
494  if (!idx)
495  idx = locate_option(argc, argv, options, "v");
496  if (idx && argv[idx + 1])
497  opt_loglevel(NULL, "loglevel", argv[idx + 1]);
498  idx = locate_option(argc, argv, options, "report");
499  if ((env = getenv("FFREPORT")) || idx) {
500  init_report(env);
501  if (report_file) {
502  int i;
503  fprintf(report_file, "Command line:\n");
504  for (i = 0; i < argc; i++) {
505  dump_argument(argv[i]);
506  fputc(i < argc - 1 ? ' ' : '\n', report_file);
507  }
508  fflush(report_file);
509  }
510  }
511  idx = locate_option(argc, argv, options, "hide_banner");
512  if (idx)
513  hide_banner = 1;
514 }
515 
516 static const AVOption *opt_find(void *obj, const char *name, const char *unit,
517  int opt_flags, int search_flags)
518 {
519  const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
520  if(o && !o->flags)
521  return NULL;
522  return o;
523 }
524 
525 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS && (arg[0]=='-' || arg[0]=='+')) ? AV_DICT_APPEND : 0
526 int opt_default(void *optctx, const char *opt, const char *arg)
527 {
528  const AVOption *o;
529  int consumed = 0;
530  char opt_stripped[128];
531  const char *p;
532  const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
533 #if CONFIG_AVRESAMPLE
534  const AVClass *rc = avresample_get_class();
535 #endif
536  const AVClass *sc, *swr_class;
537 
538  if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
540 
541  if (!(p = strchr(opt, ':')))
542  p = opt + strlen(opt);
543  av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
544 
545  if ((o = opt_find(&cc, opt_stripped, NULL, 0,
547  ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
548  (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
549  av_dict_set(&codec_opts, opt, arg, FLAGS);
550  consumed = 1;
551  }
552  if ((o = opt_find(&fc, opt, NULL, 0,
554  av_dict_set(&format_opts, opt, arg, FLAGS);
555  if (consumed)
556  av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
557  consumed = 1;
558  }
559 #if CONFIG_SWSCALE
560  sc = sws_get_class();
561  if (!consumed && (o = opt_find(&sc, opt, NULL, 0,
563  struct SwsContext *sws = sws_alloc_context();
564  int ret = av_opt_set(sws, opt, arg, 0);
565  sws_freeContext(sws);
566  if (ret < 0) {
567  av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
568  return ret;
569  }
570 
571  av_dict_set(&sws_dict, opt, arg, FLAGS);
572 
573  consumed = 1;
574  }
575 #else
576  if (!consumed && !strcmp(opt, "sws_flags")) {
577  av_log(NULL, AV_LOG_WARNING, "Ignoring %s %s, due to disabled swscale\n", opt, arg);
578  consumed = 1;
579  }
580 #endif
581 #if CONFIG_SWRESAMPLE
582  swr_class = swr_get_class();
583  if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
585  struct SwrContext *swr = swr_alloc();
586  int ret = av_opt_set(swr, opt, arg, 0);
587  swr_free(&swr);
588  if (ret < 0) {
589  av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
590  return ret;
591  }
592  av_dict_set(&swr_opts, opt, arg, FLAGS);
593  consumed = 1;
594  }
595 #endif
596 #if CONFIG_AVRESAMPLE
597  if ((o=opt_find(&rc, opt, NULL, 0,
599  av_dict_set(&resample_opts, opt, arg, FLAGS);
600  consumed = 1;
601  }
602 #endif
603 
604  if (consumed)
605  return 0;
607 }
608 
609 /*
610  * Check whether given option is a group separator.
611  *
612  * @return index of the group definition that matched or -1 if none
613  */
614 static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
615  const char *opt)
616 {
617  int i;
618 
619  for (i = 0; i < nb_groups; i++) {
620  const OptionGroupDef *p = &groups[i];
621  if (p->sep && !strcmp(p->sep, opt))
622  return i;
623  }
624 
625  return -1;
626 }
627 
628 /*
629  * Finish parsing an option group.
630  *
631  * @param group_idx which group definition should this group belong to
632  * @param arg argument of the group delimiting option
633  */
634 static void finish_group(OptionParseContext *octx, int group_idx,
635  const char *arg)
636 {
637  OptionGroupList *l = &octx->groups[group_idx];
638  OptionGroup *g;
639 
640  GROW_ARRAY(l->groups, l->nb_groups);
641  g = &l->groups[l->nb_groups - 1];
642 
643  *g = octx->cur_group;
644  g->arg = arg;
645  g->group_def = l->group_def;
646  g->sws_dict = sws_dict;
647  g->swr_opts = swr_opts;
648  g->codec_opts = codec_opts;
651 
652  codec_opts = NULL;
653  format_opts = NULL;
654  resample_opts = NULL;
655  sws_dict = NULL;
656  swr_opts = NULL;
657  init_opts();
658 
659  memset(&octx->cur_group, 0, sizeof(octx->cur_group));
660 }
661 
662 /*
663  * Add an option instance to currently parsed group.
664  */
665 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
666  const char *key, const char *val)
667 {
668  int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
669  OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
670 
671  GROW_ARRAY(g->opts, g->nb_opts);
672  g->opts[g->nb_opts - 1].opt = opt;
673  g->opts[g->nb_opts - 1].key = key;
674  g->opts[g->nb_opts - 1].val = val;
675 }
676 
678  const OptionGroupDef *groups, int nb_groups)
679 {
680  static const OptionGroupDef global_group = { "global" };
681  int i;
682 
683  memset(octx, 0, sizeof(*octx));
684 
685  octx->nb_groups = nb_groups;
686  octx->groups = av_mallocz_array(octx->nb_groups, sizeof(*octx->groups));
687  if (!octx->groups)
688  exit_program(1);
689 
690  for (i = 0; i < octx->nb_groups; i++)
691  octx->groups[i].group_def = &groups[i];
692 
693  octx->global_opts.group_def = &global_group;
694  octx->global_opts.arg = "";
695 
696  init_opts();
697 }
698 
700 {
701  int i, j;
702 
703  for (i = 0; i < octx->nb_groups; i++) {
704  OptionGroupList *l = &octx->groups[i];
705 
706  for (j = 0; j < l->nb_groups; j++) {
707  av_freep(&l->groups[j].opts);
711 
712  av_dict_free(&l->groups[j].sws_dict);
713  av_dict_free(&l->groups[j].swr_opts);
714  }
715  av_freep(&l->groups);
716  }
717  av_freep(&octx->groups);
718 
719  av_freep(&octx->cur_group.opts);
720  av_freep(&octx->global_opts.opts);
721 
722  uninit_opts();
723 }
724 
725 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
726  const OptionDef *options,
727  const OptionGroupDef *groups, int nb_groups)
728 {
729  int optindex = 1;
730  int dashdash = -2;
731 
732  /* perform system-dependent conversions for arguments list */
733  prepare_app_arguments(&argc, &argv);
734 
735  init_parse_context(octx, groups, nb_groups);
736  av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
737 
738  while (optindex < argc) {
739  const char *opt = argv[optindex++], *arg;
740  const OptionDef *po;
741  int ret;
742 
743  av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
744 
745  if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
746  dashdash = optindex;
747  continue;
748  }
749  /* unnamed group separators, e.g. output filename */
750  if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
751  finish_group(octx, 0, opt);
752  av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
753  continue;
754  }
755  opt++;
756 
757 #define GET_ARG(arg) \
758 do { \
759  arg = argv[optindex++]; \
760  if (!arg) { \
761  av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
762  return AVERROR(EINVAL); \
763  } \
764 } while (0)
765 
766  /* named group separators, e.g. -i */
767  if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
768  GET_ARG(arg);
769  finish_group(octx, ret, arg);
770  av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
771  groups[ret].name, arg);
772  continue;
773  }
774 
775  /* normal options */
776  po = find_option(options, opt);
777  if (po->name) {
778  if (po->flags & OPT_EXIT) {
779  /* optional argument, e.g. -h */
780  arg = argv[optindex++];
781  } else if (po->flags & HAS_ARG) {
782  GET_ARG(arg);
783  } else {
784  arg = "1";
785  }
786 
787  add_opt(octx, po, opt, arg);
788  av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
789  "argument '%s'.\n", po->name, po->help, arg);
790  continue;
791  }
792 
793  /* AVOptions */
794  if (argv[optindex]) {
795  ret = opt_default(NULL, opt, argv[optindex]);
796  if (ret >= 0) {
797  av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
798  "argument '%s'.\n", opt, argv[optindex]);
799  optindex++;
800  continue;
801  } else if (ret != AVERROR_OPTION_NOT_FOUND) {
802  av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
803  "with argument '%s'.\n", opt, argv[optindex]);
804  return ret;
805  }
806  }
807 
808  /* boolean -nofoo options */
809  if (opt[0] == 'n' && opt[1] == 'o' &&
810  (po = find_option(options, opt + 2)) &&
811  po->name && po->flags & OPT_BOOL) {
812  add_opt(octx, po, opt, "0");
813  av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
814  "argument 0.\n", po->name, po->help);
815  continue;
816  }
817 
818  av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
820  }
821 
822  if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
823  av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
824  "commandline.\n");
825 
826  av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
827 
828  return 0;
829 }
830 
831 int opt_cpuflags(void *optctx, const char *opt, const char *arg)
832 {
833  int ret;
834  unsigned flags = av_get_cpu_flags();
835 
836  if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
837  return ret;
838 
839  av_force_cpu_flags(flags);
840  return 0;
841 }
842 
843 int opt_loglevel(void *optctx, const char *opt, const char *arg)
844 {
845  const struct { const char *name; int level; } log_levels[] = {
846  { "quiet" , AV_LOG_QUIET },
847  { "panic" , AV_LOG_PANIC },
848  { "fatal" , AV_LOG_FATAL },
849  { "error" , AV_LOG_ERROR },
850  { "warning", AV_LOG_WARNING },
851  { "info" , AV_LOG_INFO },
852  { "verbose", AV_LOG_VERBOSE },
853  { "debug" , AV_LOG_DEBUG },
854  { "trace" , AV_LOG_TRACE },
855  };
856  char *tail;
857  int level;
858  int flags;
859  int i;
860 
861  flags = av_log_get_flags();
862  tail = strstr(arg, "repeat");
863  if (tail)
864  flags &= ~AV_LOG_SKIP_REPEATED;
865  else
866  flags |= AV_LOG_SKIP_REPEATED;
867 
868  av_log_set_flags(flags);
869  if (tail == arg)
870  arg += 6 + (arg[6]=='+');
871  if(tail && !*arg)
872  return 0;
873 
874  for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
875  if (!strcmp(log_levels[i].name, arg)) {
876  av_log_set_level(log_levels[i].level);
877  return 0;
878  }
879  }
880 
881  level = strtol(arg, &tail, 10);
882  if (*tail) {
883  av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
884  "Possible levels are numbers or:\n", arg);
885  for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
886  av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
887  exit_program(1);
888  }
889  av_log_set_level(level);
890  return 0;
891 }
892 
893 static void expand_filename_template(AVBPrint *bp, const char *template,
894  struct tm *tm)
895 {
896  int c;
897 
898  while ((c = *(template++))) {
899  if (c == '%') {
900  if (!(c = *(template++)))
901  break;
902  switch (c) {
903  case 'p':
904  av_bprintf(bp, "%s", program_name);
905  break;
906  case 't':
907  av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
908  tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
909  tm->tm_hour, tm->tm_min, tm->tm_sec);
910  break;
911  case '%':
912  av_bprint_chars(bp, c, 1);
913  break;
914  }
915  } else {
916  av_bprint_chars(bp, c, 1);
917  }
918  }
919 }
920 
921 static int init_report(const char *env)
922 {
923  char *filename_template = NULL;
924  char *key, *val;
925  int ret, count = 0;
926  time_t now;
927  struct tm *tm;
928  AVBPrint filename;
929 
930  if (report_file) /* already opened */
931  return 0;
932  time(&now);
933  tm = localtime(&now);
934 
935  while (env && *env) {
936  if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
937  if (count)
939  "Failed to parse FFREPORT environment variable: %s\n",
940  av_err2str(ret));
941  break;
942  }
943  if (*env)
944  env++;
945  count++;
946  if (!strcmp(key, "file")) {
947  av_free(filename_template);
948  filename_template = val;
949  val = NULL;
950  } else if (!strcmp(key, "level")) {
951  char *tail;
952  report_file_level = strtol(val, &tail, 10);
953  if (*tail) {
954  av_log(NULL, AV_LOG_FATAL, "Invalid report file level\n");
955  exit_program(1);
956  }
957  } else {
958  av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
959  }
960  av_free(val);
961  av_free(key);
962  }
963 
964  av_bprint_init(&filename, 0, 1);
965  expand_filename_template(&filename,
966  av_x_if_null(filename_template, "%p-%t.log"), tm);
967  av_free(filename_template);
968  if (!av_bprint_is_complete(&filename)) {
969  av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
970  return AVERROR(ENOMEM);
971  }
972 
973  report_file = fopen(filename.str, "w");
974  if (!report_file) {
975  int ret = AVERROR(errno);
976  av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
977  filename.str, strerror(errno));
978  return ret;
979  }
982  "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
983  "Report written to \"%s\"\n",
984  program_name,
985  tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
986  tm->tm_hour, tm->tm_min, tm->tm_sec,
987  filename.str);
988  av_bprint_finalize(&filename, NULL);
989  return 0;
990 }
991 
992 int opt_report(const char *opt)
993 {
994  return init_report(NULL);
995 }
996 
997 int opt_max_alloc(void *optctx, const char *opt, const char *arg)
998 {
999  char *tail;
1000  size_t max;
1001 
1002  max = strtol(arg, &tail, 10);
1003  if (*tail) {
1004  av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
1005  exit_program(1);
1006  }
1007  av_max_alloc(max);
1008  return 0;
1009 }
1010 
1011 int opt_timelimit(void *optctx, const char *opt, const char *arg)
1012 {
1013 #if HAVE_SETRLIMIT
1014  int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
1015  struct rlimit rl = { lim, lim + 1 };
1016  if (setrlimit(RLIMIT_CPU, &rl))
1017  perror("setrlimit");
1018 #else
1019  av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
1020 #endif
1021  return 0;
1022 }
1023 
1024 void print_error(const char *filename, int err)
1025 {
1026  char errbuf[128];
1027  const char *errbuf_ptr = errbuf;
1028 
1029  if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
1030  errbuf_ptr = strerror(AVUNERROR(err));
1031  av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
1032 }
1033 
1034 static int warned_cfg = 0;
1035 
1036 #define INDENT 1
1037 #define SHOW_VERSION 2
1038 #define SHOW_CONFIG 4
1039 #define SHOW_COPYRIGHT 8
1040 
1041 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
1042  if (CONFIG_##LIBNAME) { \
1043  const char *indent = flags & INDENT? " " : ""; \
1044  if (flags & SHOW_VERSION) { \
1045  unsigned int version = libname##_version(); \
1046  av_log(NULL, level, \
1047  "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n", \
1048  indent, #libname, \
1049  LIB##LIBNAME##_VERSION_MAJOR, \
1050  LIB##LIBNAME##_VERSION_MINOR, \
1051  LIB##LIBNAME##_VERSION_MICRO, \
1052  version >> 16, version >> 8 & 0xff, version & 0xff); \
1053  } \
1054  if (flags & SHOW_CONFIG) { \
1055  const char *cfg = libname##_configuration(); \
1056  if (strcmp(FFMPEG_CONFIGURATION, cfg)) { \
1057  if (!warned_cfg) { \
1058  av_log(NULL, level, \
1059  "%sWARNING: library configuration mismatch\n", \
1060  indent); \
1061  warned_cfg = 1; \
1062  } \
1063  av_log(NULL, level, "%s%-11s configuration: %s\n", \
1064  indent, #libname, cfg); \
1065  } \
1066  } \
1067  } \
1068 
1069 static void print_all_libs_info(int flags, int level)
1070 {
1071  PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
1072  PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
1073  PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
1074  PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
1075  PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
1076  PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
1077  PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
1078  PRINT_LIB_INFO(swresample,SWRESAMPLE, flags, level);
1079  PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
1080 }
1081 
1082 static void print_program_info(int flags, int level)
1083 {
1084  const char *indent = flags & INDENT? " " : "";
1085 
1086  av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
1087  if (flags & SHOW_COPYRIGHT)
1088  av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
1089  program_birth_year, CONFIG_THIS_YEAR);
1090  av_log(NULL, level, "\n");
1091  av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
1092 
1093  av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
1094 }
1095 
1096 static void print_buildconf(int flags, int level)
1097 {
1098  const char *indent = flags & INDENT ? " " : "";
1099  char str[] = { FFMPEG_CONFIGURATION };
1100  char *conflist, *remove_tilde, *splitconf;
1101 
1102  // Change all the ' --' strings to '~--' so that
1103  // they can be identified as tokens.
1104  while ((conflist = strstr(str, " --")) != NULL) {
1105  strncpy(conflist, "~--", 3);
1106  }
1107 
1108  // Compensate for the weirdness this would cause
1109  // when passing 'pkg-config --static'.
1110  while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
1111  strncpy(remove_tilde, "pkg-config ", 11);
1112  }
1113 
1114  splitconf = strtok(str, "~");
1115  av_log(NULL, level, "\n%sconfiguration:\n", indent);
1116  while (splitconf != NULL) {
1117  av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
1118  splitconf = strtok(NULL, "~");
1119  }
1120 }
1121 
1122 void show_banner(int argc, char **argv, const OptionDef *options)
1123 {
1124  int idx = locate_option(argc, argv, options, "version");
1125  if (hide_banner || idx)
1126  return;
1127 
1131 }
1132 
1133 int show_version(void *optctx, const char *opt, const char *arg)
1134 {
1138 
1139  return 0;
1140 }
1141 
1142 int show_buildconf(void *optctx, const char *opt, const char *arg)
1143 {
1146 
1147  return 0;
1148 }
1149 
1150 int show_license(void *optctx, const char *opt, const char *arg)
1151 {
1152 #if CONFIG_NONFREE
1153  printf(
1154  "This version of %s has nonfree parts compiled in.\n"
1155  "Therefore it is not legally redistributable.\n",
1156  program_name );
1157 #elif CONFIG_GPLV3
1158  printf(
1159  "%s is free software; you can redistribute it and/or modify\n"
1160  "it under the terms of the GNU General Public License as published by\n"
1161  "the Free Software Foundation; either version 3 of the License, or\n"
1162  "(at your option) any later version.\n"
1163  "\n"
1164  "%s is distributed in the hope that it will be useful,\n"
1165  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1166  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1167  "GNU General Public License for more details.\n"
1168  "\n"
1169  "You should have received a copy of the GNU General Public License\n"
1170  "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1172 #elif CONFIG_GPL
1173  printf(
1174  "%s is free software; you can redistribute it and/or modify\n"
1175  "it under the terms of the GNU General Public License as published by\n"
1176  "the Free Software Foundation; either version 2 of the License, or\n"
1177  "(at your option) any later version.\n"
1178  "\n"
1179  "%s is distributed in the hope that it will be useful,\n"
1180  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1181  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1182  "GNU General Public License for more details.\n"
1183  "\n"
1184  "You should have received a copy of the GNU General Public License\n"
1185  "along with %s; if not, write to the Free Software\n"
1186  "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1188 #elif CONFIG_LGPLV3
1189  printf(
1190  "%s is free software; you can redistribute it and/or modify\n"
1191  "it under the terms of the GNU Lesser General Public License as published by\n"
1192  "the Free Software Foundation; either version 3 of the License, or\n"
1193  "(at your option) any later version.\n"
1194  "\n"
1195  "%s is distributed in the hope that it will be useful,\n"
1196  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1197  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1198  "GNU Lesser General Public License for more details.\n"
1199  "\n"
1200  "You should have received a copy of the GNU Lesser General Public License\n"
1201  "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1203 #else
1204  printf(
1205  "%s is free software; you can redistribute it and/or\n"
1206  "modify it under the terms of the GNU Lesser General Public\n"
1207  "License as published by the Free Software Foundation; either\n"
1208  "version 2.1 of the License, or (at your option) any later version.\n"
1209  "\n"
1210  "%s is distributed in the hope that it will be useful,\n"
1211  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1212  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
1213  "Lesser General Public License for more details.\n"
1214  "\n"
1215  "You should have received a copy of the GNU Lesser General Public\n"
1216  "License along with %s; if not, write to the Free Software\n"
1217  "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1219 #endif
1220 
1221  return 0;
1222 }
1223 
1224 static int is_device(const AVClass *avclass)
1225 {
1226  if (!avclass)
1227  return 0;
1228  return AV_IS_INPUT_DEVICE(avclass->category) || AV_IS_OUTPUT_DEVICE(avclass->category);
1229 }
1230 
1231 static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only)
1232 {
1233  AVInputFormat *ifmt = NULL;
1234  AVOutputFormat *ofmt = NULL;
1235  const char *last_name;
1236  int is_dev;
1237 
1238  printf("%s\n"
1239  " D. = Demuxing supported\n"
1240  " .E = Muxing supported\n"
1241  " --\n", device_only ? "Devices:" : "File formats:");
1242  last_name = "000";
1243  for (;;) {
1244  int decode = 0;
1245  int encode = 0;
1246  const char *name = NULL;
1247  const char *long_name = NULL;
1248 
1249  while ((ofmt = av_oformat_next(ofmt))) {
1250  is_dev = is_device(ofmt->priv_class);
1251  if (!is_dev && device_only)
1252  continue;
1253  if ((!name || strcmp(ofmt->name, name) < 0) &&
1254  strcmp(ofmt->name, last_name) > 0) {
1255  name = ofmt->name;
1256  long_name = ofmt->long_name;
1257  encode = 1;
1258  }
1259  }
1260  while ((ifmt = av_iformat_next(ifmt))) {
1261  is_dev = is_device(ifmt->priv_class);
1262  if (!is_dev && device_only)
1263  continue;
1264  if ((!name || strcmp(ifmt->name, name) < 0) &&
1265  strcmp(ifmt->name, last_name) > 0) {
1266  name = ifmt->name;
1267  long_name = ifmt->long_name;
1268  encode = 0;
1269  }
1270  if (name && strcmp(ifmt->name, name) == 0)
1271  decode = 1;
1272  }
1273  if (!name)
1274  break;
1275  last_name = name;
1276 
1277  printf(" %s%s %-15s %s\n",
1278  decode ? "D" : " ",
1279  encode ? "E" : " ",
1280  name,
1281  long_name ? long_name:" ");
1282  }
1283  return 0;
1284 }
1285 
1286 int show_formats(void *optctx, const char *opt, const char *arg)
1287 {
1288  return show_formats_devices(optctx, opt, arg, 0);
1289 }
1290 
1291 int show_devices(void *optctx, const char *opt, const char *arg)
1292 {
1293  return show_formats_devices(optctx, opt, arg, 1);
1294 }
1295 
1296 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
1297  if (codec->field) { \
1298  const type *p = codec->field; \
1299  \
1300  printf(" Supported " list_name ":"); \
1301  while (*p != term) { \
1302  get_name(*p); \
1303  printf(" %s", name); \
1304  p++; \
1305  } \
1306  printf("\n"); \
1307  } \
1308 
1309 static void print_codec(const AVCodec *c)
1310 {
1311  int encoder = av_codec_is_encoder(c);
1312 
1313  printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
1314  c->long_name ? c->long_name : "");
1315 
1316  if (c->type == AVMEDIA_TYPE_VIDEO ||
1317  c->type == AVMEDIA_TYPE_AUDIO) {
1318  printf(" Threading capabilities: ");
1322  AV_CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
1323  case AV_CODEC_CAP_FRAME_THREADS: printf("frame"); break;
1324  case AV_CODEC_CAP_SLICE_THREADS: printf("slice"); break;
1325  default: printf("no"); break;
1326  }
1327  printf("\n");
1328  }
1329 
1330  if (c->supported_framerates) {
1331  const AVRational *fps = c->supported_framerates;
1332 
1333  printf(" Supported framerates:");
1334  while (fps->num) {
1335  printf(" %d/%d", fps->num, fps->den);
1336  fps++;
1337  }
1338  printf("\n");
1339  }
1340  PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
1342  PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
1344  PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
1346  PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
1347  0, GET_CH_LAYOUT_DESC);
1348 
1349  if (c->priv_class) {
1353  }
1354 }
1355 
1357 {
1358  switch (type) {
1359  case AVMEDIA_TYPE_VIDEO: return 'V';
1360  case AVMEDIA_TYPE_AUDIO: return 'A';
1361  case AVMEDIA_TYPE_DATA: return 'D';
1362  case AVMEDIA_TYPE_SUBTITLE: return 'S';
1363  case AVMEDIA_TYPE_ATTACHMENT:return 'T';
1364  default: return '?';
1365  }
1366 }
1367 
1368 static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
1369  int encoder)
1370 {
1371  while ((prev = av_codec_next(prev))) {
1372  if (prev->id == id &&
1373  (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
1374  return prev;
1375  }
1376  return NULL;
1377 }
1378 
1379 static int compare_codec_desc(const void *a, const void *b)
1380 {
1381  const AVCodecDescriptor * const *da = a;
1382  const AVCodecDescriptor * const *db = b;
1383 
1384  return (*da)->type != (*db)->type ? (*da)->type - (*db)->type :
1385  strcmp((*da)->name, (*db)->name);
1386 }
1387 
1388 static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
1389 {
1390  const AVCodecDescriptor *desc = NULL;
1391  const AVCodecDescriptor **codecs;
1392  unsigned nb_codecs = 0, i = 0;
1393 
1394  while ((desc = avcodec_descriptor_next(desc)))
1395  nb_codecs++;
1396  if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
1397  av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
1398  exit_program(1);
1399  }
1400  desc = NULL;
1401  while ((desc = avcodec_descriptor_next(desc)))
1402  codecs[i++] = desc;
1403  av_assert0(i == nb_codecs);
1404  qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
1405  *rcodecs = codecs;
1406  return nb_codecs;
1407 }
1408 
1409 static void print_codecs_for_id(enum AVCodecID id, int encoder)
1410 {
1411  const AVCodec *codec = NULL;
1412 
1413  printf(" (%s: ", encoder ? "encoders" : "decoders");
1414 
1415  while ((codec = next_codec_for_id(id, codec, encoder)))
1416  printf("%s ", codec->name);
1417 
1418  printf(")");
1419 }
1420 
1421 int show_codecs(void *optctx, const char *opt, const char *arg)
1422 {
1423  const AVCodecDescriptor **codecs;
1424  unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1425 
1426  printf("Codecs:\n"
1427  " D..... = Decoding supported\n"
1428  " .E.... = Encoding supported\n"
1429  " ..V... = Video codec\n"
1430  " ..A... = Audio codec\n"
1431  " ..S... = Subtitle codec\n"
1432  " ...I.. = Intra frame-only codec\n"
1433  " ....L. = Lossy compression\n"
1434  " .....S = Lossless compression\n"
1435  " -------\n");
1436  for (i = 0; i < nb_codecs; i++) {
1437  const AVCodecDescriptor *desc = codecs[i];
1438  const AVCodec *codec = NULL;
1439 
1440  if (strstr(desc->name, "_deprecated"))
1441  continue;
1442 
1443  printf(" ");
1444  printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1445  printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1446 
1447  printf("%c", get_media_type_char(desc->type));
1448  printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1449  printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1450  printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1451 
1452  printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1453 
1454  /* print decoders/encoders when there's more than one or their
1455  * names are different from codec name */
1456  while ((codec = next_codec_for_id(desc->id, codec, 0))) {
1457  if (strcmp(codec->name, desc->name)) {
1458  print_codecs_for_id(desc->id, 0);
1459  break;
1460  }
1461  }
1462  codec = NULL;
1463  while ((codec = next_codec_for_id(desc->id, codec, 1))) {
1464  if (strcmp(codec->name, desc->name)) {
1465  print_codecs_for_id(desc->id, 1);
1466  break;
1467  }
1468  }
1469 
1470  printf("\n");
1471  }
1472  av_free(codecs);
1473  return 0;
1474 }
1475 
1476 static void print_codecs(int encoder)
1477 {
1478  const AVCodecDescriptor **codecs;
1479  unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1480 
1481  printf("%s:\n"
1482  " V..... = Video\n"
1483  " A..... = Audio\n"
1484  " S..... = Subtitle\n"
1485  " .F.... = Frame-level multithreading\n"
1486  " ..S... = Slice-level multithreading\n"
1487  " ...X.. = Codec is experimental\n"
1488  " ....B. = Supports draw_horiz_band\n"
1489  " .....D = Supports direct rendering method 1\n"
1490  " ------\n",
1491  encoder ? "Encoders" : "Decoders");
1492  for (i = 0; i < nb_codecs; i++) {
1493  const AVCodecDescriptor *desc = codecs[i];
1494  const AVCodec *codec = NULL;
1495 
1496  while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1497  printf(" %c", get_media_type_char(desc->type));
1498  printf((codec->capabilities & AV_CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1499  printf((codec->capabilities & AV_CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1500  printf((codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1501  printf((codec->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
1502  printf((codec->capabilities & AV_CODEC_CAP_DR1) ? "D" : ".");
1503 
1504  printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1505  if (strcmp(codec->name, desc->name))
1506  printf(" (codec %s)", desc->name);
1507 
1508  printf("\n");
1509  }
1510  }
1511  av_free(codecs);
1512 }
1513 
1514 int show_decoders(void *optctx, const char *opt, const char *arg)
1515 {
1516  print_codecs(0);
1517  return 0;
1518 }
1519 
1520 int show_encoders(void *optctx, const char *opt, const char *arg)
1521 {
1522  print_codecs(1);
1523  return 0;
1524 }
1525 
1526 int show_bsfs(void *optctx, const char *opt, const char *arg)
1527 {
1528  AVBitStreamFilter *bsf = NULL;
1529 
1530  printf("Bitstream filters:\n");
1531  while ((bsf = av_bitstream_filter_next(bsf)))
1532  printf("%s\n", bsf->name);
1533  printf("\n");
1534  return 0;
1535 }
1536 
1537 int show_protocols(void *optctx, const char *opt, const char *arg)
1538 {
1539  void *opaque = NULL;
1540  const char *name;
1541 
1542  printf("Supported file protocols:\n"
1543  "Input:\n");
1544  while ((name = avio_enum_protocols(&opaque, 0)))
1545  printf(" %s\n", name);
1546  printf("Output:\n");
1547  while ((name = avio_enum_protocols(&opaque, 1)))
1548  printf(" %s\n", name);
1549  return 0;
1550 }
1551 
1552 int show_filters(void *optctx, const char *opt, const char *arg)
1553 {
1554 #if CONFIG_AVFILTER
1555  const AVFilter *filter = NULL;
1556  char descr[64], *descr_cur;
1557  int i, j;
1558  const AVFilterPad *pad;
1559 
1560  printf("Filters:\n"
1561  " T.. = Timeline support\n"
1562  " .S. = Slice threading\n"
1563  " ..C = Command support\n"
1564  " A = Audio input/output\n"
1565  " V = Video input/output\n"
1566  " N = Dynamic number and/or type of input/output\n"
1567  " | = Source or sink filter\n");
1568  while ((filter = avfilter_next(filter))) {
1569  descr_cur = descr;
1570  for (i = 0; i < 2; i++) {
1571  if (i) {
1572  *(descr_cur++) = '-';
1573  *(descr_cur++) = '>';
1574  }
1575  pad = i ? filter->outputs : filter->inputs;
1576  for (j = 0; pad && avfilter_pad_get_name(pad, j); j++) {
1577  if (descr_cur >= descr + sizeof(descr) - 4)
1578  break;
1579  *(descr_cur++) = get_media_type_char(avfilter_pad_get_type(pad, j));
1580  }
1581  if (!j)
1582  *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
1583  ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
1584  }
1585  *descr_cur = 0;
1586  printf(" %c%c%c %-16s %-10s %s\n",
1587  filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
1588  filter->flags & AVFILTER_FLAG_SLICE_THREADS ? 'S' : '.',
1589  filter->process_command ? 'C' : '.',
1590  filter->name, descr, filter->description);
1591  }
1592 #else
1593  printf("No filters available: libavfilter disabled\n");
1594 #endif
1595  return 0;
1596 }
1597 
1598 int show_colors(void *optctx, const char *opt, const char *arg)
1599 {
1600  const char *name;
1601  const uint8_t *rgb;
1602  int i;
1603 
1604  printf("%-32s #RRGGBB\n", "name");
1605 
1606  for (i = 0; name = av_get_known_color_name(i, &rgb); i++)
1607  printf("%-32s #%02x%02x%02x\n", name, rgb[0], rgb[1], rgb[2]);
1608 
1609  return 0;
1610 }
1611 
1612 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1613 {
1614  const AVPixFmtDescriptor *pix_desc = NULL;
1615 
1616  printf("Pixel formats:\n"
1617  "I.... = Supported Input format for conversion\n"
1618  ".O... = Supported Output format for conversion\n"
1619  "..H.. = Hardware accelerated format\n"
1620  "...P. = Paletted format\n"
1621  "....B = Bitstream format\n"
1622  "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1623  "-----\n");
1624 
1625 #if !CONFIG_SWSCALE
1626 # define sws_isSupportedInput(x) 0
1627 # define sws_isSupportedOutput(x) 0
1628 #endif
1629 
1630  while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1631  enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1632  printf("%c%c%c%c%c %-16s %d %2d\n",
1633  sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1634  sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1635  pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL ? 'H' : '.',
1636  pix_desc->flags & AV_PIX_FMT_FLAG_PAL ? 'P' : '.',
1637  pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
1638  pix_desc->name,
1639  pix_desc->nb_components,
1640  av_get_bits_per_pixel(pix_desc));
1641  }
1642  return 0;
1643 }
1644 
1645 int show_layouts(void *optctx, const char *opt, const char *arg)
1646 {
1647  int i = 0;
1648  uint64_t layout, j;
1649  const char *name, *descr;
1650 
1651  printf("Individual channels:\n"
1652  "NAME DESCRIPTION\n");
1653  for (i = 0; i < 63; i++) {
1654  name = av_get_channel_name((uint64_t)1 << i);
1655  if (!name)
1656  continue;
1657  descr = av_get_channel_description((uint64_t)1 << i);
1658  printf("%-14s %s\n", name, descr);
1659  }
1660  printf("\nStandard channel layouts:\n"
1661  "NAME DECOMPOSITION\n");
1662  for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
1663  if (name) {
1664  printf("%-14s ", name);
1665  for (j = 1; j; j <<= 1)
1666  if ((layout & j))
1667  printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
1668  printf("\n");
1669  }
1670  }
1671  return 0;
1672 }
1673 
1674 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1675 {
1676  int i;
1677  char fmt_str[128];
1678  for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1679  printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1680  return 0;
1681 }
1682 
1683 static void show_help_codec(const char *name, int encoder)
1684 {
1685  const AVCodecDescriptor *desc;
1686  const AVCodec *codec;
1687 
1688  if (!name) {
1689  av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1690  return;
1691  }
1692 
1693  codec = encoder ? avcodec_find_encoder_by_name(name) :
1695 
1696  if (codec)
1697  print_codec(codec);
1698  else if ((desc = avcodec_descriptor_get_by_name(name))) {
1699  int printed = 0;
1700 
1701  while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1702  printed = 1;
1703  print_codec(codec);
1704  }
1705 
1706  if (!printed) {
1707  av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
1708  "but no %s for it are available. FFmpeg might need to be "
1709  "recompiled with additional external libraries.\n",
1710  name, encoder ? "encoders" : "decoders");
1711  }
1712  } else {
1713  av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
1714  name);
1715  }
1716 }
1717 
1718 static void show_help_demuxer(const char *name)
1719 {
1720  const AVInputFormat *fmt = av_find_input_format(name);
1721 
1722  if (!fmt) {
1723  av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1724  return;
1725  }
1726 
1727  printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1728 
1729  if (fmt->extensions)
1730  printf(" Common extensions: %s.\n", fmt->extensions);
1731 
1732  if (fmt->priv_class)
1734 }
1735 
1736 static void show_help_muxer(const char *name)
1737 {
1738  const AVCodecDescriptor *desc;
1739  const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1740 
1741  if (!fmt) {
1742  av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1743  return;
1744  }
1745 
1746  printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1747 
1748  if (fmt->extensions)
1749  printf(" Common extensions: %s.\n", fmt->extensions);
1750  if (fmt->mime_type)
1751  printf(" Mime type: %s.\n", fmt->mime_type);
1752  if (fmt->video_codec != AV_CODEC_ID_NONE &&
1753  (desc = avcodec_descriptor_get(fmt->video_codec))) {
1754  printf(" Default video codec: %s.\n", desc->name);
1755  }
1756  if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1757  (desc = avcodec_descriptor_get(fmt->audio_codec))) {
1758  printf(" Default audio codec: %s.\n", desc->name);
1759  }
1760  if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1761  (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
1762  printf(" Default subtitle codec: %s.\n", desc->name);
1763  }
1764 
1765  if (fmt->priv_class)
1767 }
1768 
1769 #if CONFIG_AVFILTER
1770 static void show_help_filter(const char *name)
1771 {
1772 #if CONFIG_AVFILTER
1773  const AVFilter *f = avfilter_get_by_name(name);
1774  int i, count;
1775 
1776  if (!name) {
1777  av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
1778  return;
1779  } else if (!f) {
1780  av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
1781  return;
1782  }
1783 
1784  printf("Filter %s\n", f->name);
1785  if (f->description)
1786  printf(" %s\n", f->description);
1787 
1789  printf(" slice threading supported\n");
1790 
1791  printf(" Inputs:\n");
1792  count = avfilter_pad_count(f->inputs);
1793  for (i = 0; i < count; i++) {
1794  printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
1796  }
1798  printf(" dynamic (depending on the options)\n");
1799  else if (!count)
1800  printf(" none (source filter)\n");
1801 
1802  printf(" Outputs:\n");
1803  count = avfilter_pad_count(f->outputs);
1804  for (i = 0; i < count; i++) {
1805  printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
1807  }
1809  printf(" dynamic (depending on the options)\n");
1810  else if (!count)
1811  printf(" none (sink filter)\n");
1812 
1813  if (f->priv_class)
1817  printf("This filter has support for timeline through the 'enable' option.\n");
1818 #else
1819  av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
1820  "can not to satisfy request\n");
1821 #endif
1822 }
1823 #endif
1824 
1825 int show_help(void *optctx, const char *opt, const char *arg)
1826 {
1827  char *topic, *par;
1829 
1830  topic = av_strdup(arg ? arg : "");
1831  if (!topic)
1832  return AVERROR(ENOMEM);
1833  par = strchr(topic, '=');
1834  if (par)
1835  *par++ = 0;
1836 
1837  if (!*topic) {
1838  show_help_default(topic, par);
1839  } else if (!strcmp(topic, "decoder")) {
1840  show_help_codec(par, 0);
1841  } else if (!strcmp(topic, "encoder")) {
1842  show_help_codec(par, 1);
1843  } else if (!strcmp(topic, "demuxer")) {
1844  show_help_demuxer(par);
1845  } else if (!strcmp(topic, "muxer")) {
1846  show_help_muxer(par);
1847 #if CONFIG_AVFILTER
1848  } else if (!strcmp(topic, "filter")) {
1849  show_help_filter(par);
1850 #endif
1851  } else {
1852  show_help_default(topic, par);
1853  }
1854 
1855  av_freep(&topic);
1856  return 0;
1857 }
1858 
1859 int read_yesno(void)
1860 {
1861  int c = getchar();
1862  int yesno = (av_toupper(c) == 'Y');
1863 
1864  while (c != '\n' && c != EOF)
1865  c = getchar();
1866 
1867  return yesno;
1868 }
1869 
1870 FILE *get_preset_file(char *filename, size_t filename_size,
1871  const char *preset_name, int is_path,
1872  const char *codec_name)
1873 {
1874  FILE *f = NULL;
1875  int i;
1876  const char *base[3] = { getenv("FFMPEG_DATADIR"),
1877  getenv("HOME"),
1878  FFMPEG_DATADIR, };
1879 
1880  if (is_path) {
1881  av_strlcpy(filename, preset_name, filename_size);
1882  f = fopen(filename, "r");
1883  } else {
1884 #ifdef _WIN32
1885  char datadir[MAX_PATH], *ls;
1886  base[2] = NULL;
1887 
1888  if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
1889  {
1890  for (ls = datadir; ls < datadir + strlen(datadir); ls++)
1891  if (*ls == '\\') *ls = '/';
1892 
1893  if (ls = strrchr(datadir, '/'))
1894  {
1895  *ls = 0;
1896  strncat(datadir, "/ffpresets", sizeof(datadir) - 1 - strlen(datadir));
1897  base[2] = datadir;
1898  }
1899  }
1900 #endif
1901  for (i = 0; i < 3 && !f; i++) {
1902  if (!base[i])
1903  continue;
1904  snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
1905  i != 1 ? "" : "/.ffmpeg", preset_name);
1906  f = fopen(filename, "r");
1907  if (!f && codec_name) {
1908  snprintf(filename, filename_size,
1909  "%s%s/%s-%s.ffpreset",
1910  base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
1911  preset_name);
1912  f = fopen(filename, "r");
1913  }
1914  }
1915  }
1916 
1917  return f;
1918 }
1919 
1920 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
1921 {
1922  int ret = avformat_match_stream_specifier(s, st, spec);
1923  if (ret < 0)
1924  av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
1925  return ret;
1926 }
1927 
1929  AVFormatContext *s, AVStream *st, AVCodec *codec)
1930 {
1931  AVDictionary *ret = NULL;
1932  AVDictionaryEntry *t = NULL;
1935  char prefix = 0;
1936  const AVClass *cc = avcodec_get_class();
1937 
1938  if (!codec)
1939  codec = s->oformat ? avcodec_find_encoder(codec_id)
1940  : avcodec_find_decoder(codec_id);
1941 
1942  switch (st->codec->codec_type) {
1943  case AVMEDIA_TYPE_VIDEO:
1944  prefix = 'v';
1945  flags |= AV_OPT_FLAG_VIDEO_PARAM;
1946  break;
1947  case AVMEDIA_TYPE_AUDIO:
1948  prefix = 'a';
1949  flags |= AV_OPT_FLAG_AUDIO_PARAM;
1950  break;
1951  case AVMEDIA_TYPE_SUBTITLE:
1952  prefix = 's';
1953  flags |= AV_OPT_FLAG_SUBTITLE_PARAM;
1954  break;
1955  }
1956 
1957  while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
1958  char *p = strchr(t->key, ':');
1959 
1960  /* check stream specification in opt name */
1961  if (p)
1962  switch (check_stream_specifier(s, st, p + 1)) {
1963  case 1: *p = 0; break;
1964  case 0: continue;
1965  default: exit_program(1);
1966  }
1967 
1968  if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
1969  !codec ||
1970  (codec->priv_class &&
1971  av_opt_find(&codec->priv_class, t->key, NULL, flags,
1973  av_dict_set(&ret, t->key, t->value, 0);
1974  else if (t->key[0] == prefix &&
1975  av_opt_find(&cc, t->key + 1, NULL, flags,
1977  av_dict_set(&ret, t->key + 1, t->value, 0);
1978 
1979  if (p)
1980  *p = ':';
1981  }
1982  return ret;
1983 }
1984 
1986  AVDictionary *codec_opts)
1987 {
1988  int i;
1989  AVDictionary **opts;
1990 
1991  if (!s->nb_streams)
1992  return NULL;
1993  opts = av_mallocz_array(s->nb_streams, sizeof(*opts));
1994  if (!opts) {
1996  "Could not alloc memory for stream options.\n");
1997  return NULL;
1998  }
1999  for (i = 0; i < s->nb_streams; i++)
2000  opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id,
2001  s, s->streams[i], NULL);
2002  return opts;
2003 }
2004 
2005 void *grow_array(void *array, int elem_size, int *size, int new_size)
2006 {
2007  if (new_size >= INT_MAX / elem_size) {
2008  av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
2009  exit_program(1);
2010  }
2011  if (*size < new_size) {
2012  uint8_t *tmp = av_realloc_array(array, new_size, elem_size);
2013  if (!tmp) {
2014  av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
2015  exit_program(1);
2016  }
2017  memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
2018  *size = new_size;
2019  return tmp;
2020  }
2021  return array;
2022 }
2023 
2025 {
2026  AVDictionaryEntry *rotate_tag = av_dict_get(st->metadata, "rotate", NULL, 0);
2027  uint8_t* displaymatrix = av_stream_get_side_data(st,
2029  double theta = 0;
2030 
2031  if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
2032  char *tail;
2033  theta = av_strtod(rotate_tag->value, &tail);
2034  if (*tail)
2035  theta = 0;
2036  }
2037  if (displaymatrix && !theta)
2038  theta = -av_display_rotation_get((int32_t*) displaymatrix);
2039 
2040  theta -= 360*floor(theta/360 + 0.9/360);
2041 
2042  if (fabs(theta - 90*round(theta/90)) > 2)
2043  av_log(NULL, AV_LOG_WARNING, "Odd rotation angle.\n"
2044  "If you want to help, upload a sample "
2045  "of this file to ftp://upload.ffmpeg.org/incoming/ "
2046  "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)");
2047 
2048  return theta;
2049 }
2050 
2051 #if CONFIG_AVDEVICE
2052 static int print_device_sources(AVInputFormat *fmt, AVDictionary *opts)
2053 {
2054  int ret, i;
2055  AVDeviceInfoList *device_list = NULL;
2056 
2057  if (!fmt || !fmt->priv_class || !AV_IS_INPUT_DEVICE(fmt->priv_class->category))
2058  return AVERROR(EINVAL);
2059 
2060  printf("Audo-detected sources for %s:\n", fmt->name);
2061  if (!fmt->get_device_list) {
2062  ret = AVERROR(ENOSYS);
2063  printf("Cannot list sources. Not implemented.\n");
2064  goto fail;
2065  }
2066 
2067  if ((ret = avdevice_list_input_sources(fmt, NULL, opts, &device_list)) < 0) {
2068  printf("Cannot list sources.\n");
2069  goto fail;
2070  }
2071 
2072  for (i = 0; i < device_list->nb_devices; i++) {
2073  printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2074  device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2075  }
2076 
2077  fail:
2078  avdevice_free_list_devices(&device_list);
2079  return ret;
2080 }
2081 
2082 static int print_device_sinks(AVOutputFormat *fmt, AVDictionary *opts)
2083 {
2084  int ret, i;
2085  AVDeviceInfoList *device_list = NULL;
2086 
2087  if (!fmt || !fmt->priv_class || !AV_IS_OUTPUT_DEVICE(fmt->priv_class->category))
2088  return AVERROR(EINVAL);
2089 
2090  printf("Audo-detected sinks for %s:\n", fmt->name);
2091  if (!fmt->get_device_list) {
2092  ret = AVERROR(ENOSYS);
2093  printf("Cannot list sinks. Not implemented.\n");
2094  goto fail;
2095  }
2096 
2097  if ((ret = avdevice_list_output_sinks(fmt, NULL, opts, &device_list)) < 0) {
2098  printf("Cannot list sinks.\n");
2099  goto fail;
2100  }
2101 
2102  for (i = 0; i < device_list->nb_devices; i++) {
2103  printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2104  device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2105  }
2106 
2107  fail:
2108  avdevice_free_list_devices(&device_list);
2109  return ret;
2110 }
2111 
2112 static int show_sinks_sources_parse_arg(const char *arg, char **dev, AVDictionary **opts)
2113 {
2114  int ret;
2115  if (arg) {
2116  char *opts_str = NULL;
2117  av_assert0(dev && opts);
2118  *dev = av_strdup(arg);
2119  if (!*dev)
2120  return AVERROR(ENOMEM);
2121  if ((opts_str = strchr(*dev, ','))) {
2122  *(opts_str++) = '\0';
2123  if (opts_str[0] && ((ret = av_dict_parse_string(opts, opts_str, "=", ":", 0)) < 0)) {
2124  av_freep(dev);
2125  return ret;
2126  }
2127  }
2128  } else
2129  printf("\nDevice name is not provided.\n"
2130  "You can pass devicename[,opt1=val1[,opt2=val2...]] as an argument.\n\n");
2131  return 0;
2132 }
2133 
2134 int show_sources(void *optctx, const char *opt, const char *arg)
2135 {
2136  AVInputFormat *fmt = NULL;
2137  char *dev = NULL;
2138  AVDictionary *opts = NULL;
2139  int ret = 0;
2140  int error_level = av_log_get_level();
2141 
2143 
2144  if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2145  goto fail;
2146 
2147  do {
2148  fmt = av_input_audio_device_next(fmt);
2149  if (fmt) {
2150  if (!strcmp(fmt->name, "lavfi"))
2151  continue; //it's pointless to probe lavfi
2152  if (dev && !av_match_name(dev, fmt->name))
2153  continue;
2154  print_device_sources(fmt, opts);
2155  }
2156  } while (fmt);
2157  do {
2158  fmt = av_input_video_device_next(fmt);
2159  if (fmt) {
2160  if (dev && !av_match_name(dev, fmt->name))
2161  continue;
2162  print_device_sources(fmt, opts);
2163  }
2164  } while (fmt);
2165  fail:
2166  av_dict_free(&opts);
2167  av_free(dev);
2168  av_log_set_level(error_level);
2169  return ret;
2170 }
2171 
2172 int show_sinks(void *optctx, const char *opt, const char *arg)
2173 {
2174  AVOutputFormat *fmt = NULL;
2175  char *dev = NULL;
2176  AVDictionary *opts = NULL;
2177  int ret = 0;
2178  int error_level = av_log_get_level();
2179 
2181 
2182  if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2183  goto fail;
2184 
2185  do {
2186  fmt = av_output_audio_device_next(fmt);
2187  if (fmt) {
2188  if (dev && !av_match_name(dev, fmt->name))
2189  continue;
2190  print_device_sinks(fmt, opts);
2191  }
2192  } while (fmt);
2193  do {
2194  fmt = av_output_video_device_next(fmt);
2195  if (fmt) {
2196  if (dev && !av_match_name(dev, fmt->name))
2197  continue;
2198  print_device_sinks(fmt, opts);
2199  }
2200  } while (fmt);
2201  fail:
2202  av_dict_free(&opts);
2203  av_free(dev);
2204  av_log_set_level(error_level);
2205  return ret;
2206 }
2207 
2208 #endif
AVOutputFormat * av_output_audio_device_next(AVOutputFormat *d)
Audio output devices iterator.
Definition: avdevice.c:115
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:115
int parse_optgroup(void *optctx, OptionGroup *g)
Parse an options group and write results into optctx.
Definition: cmdutils.c:395
#define NULL
Definition: coverity.c:32
#define AV_CODEC_PROP_INTRA_ONLY
Codec uses only intra compression.
Definition: avcodec.h:596
const char const char void * val
Definition: avisynth_c.h:634
AVDictionary * resample_opts
Definition: cmdutils.h:279
const char * s
Definition: avisynth_c.h:631
Number of sample formats. DO NOT USE if linking dynamically.
Definition: samplefmt.h:73
static enum AVPixelFormat pix_fmt
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
AVDictionary * swr_opts
Definition: cmdutils.h:281
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:1514
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: utils.c:2997
const char * name
< group name
Definition: cmdutils.h:257
static void finish_group(OptionParseContext *octx, int group_idx, const char *arg)
Definition: cmdutils.c:634
#define FLAGS
Definition: cmdutils.c:525
AVOption.
Definition: opt.h:255
int show_license(void *optctx, const char *opt, const char *arg)
Print the license of the program to stdout.
Definition: cmdutils.c:1150
#define AV_CODEC_PROP_LOSSY
Codec supports lossy compression.
Definition: avcodec.h:602
#define AV_OPT_FLAG_SUBTITLE_PARAM
Definition: opt.h:292
double get_rotation(AVStream *st)
Definition: cmdutils.c:2024
const char * fmt
Definition: avisynth_c.h:632
char * device_description
human friendly name
Definition: avdevice.h:453
int(* func_arg)(void *, const char *, const char *)
Definition: cmdutils.h:185
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
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:91
Main libavfilter public API header.
const char * g
Definition: vf_curves.c:108
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:558
void av_log_set_level(int level)
Set the log level.
Definition: log.c:382
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:725
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:2081
const AVClass * av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
Iterate over potential AVOptions-enabled children of parent.
Definition: opt.c:1539
int opt_loglevel(void *optctx, const char *opt, const char *arg)
Set the libav* libraries log level.
Definition: cmdutils.c:843
enum AVCodecID video_codec
default video codec
Definition: avformat.h:524
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the given stream matches a stream specifier.
Definition: cmdutils.c:1920
#define INDENT
Definition: cmdutils.c:1036
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
Definition: avfilter.h:431
enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx)
Get the type of an AVFilterPad.
Definition: avfilter.c:1009
char * device_name
device name, format depends on device
Definition: avdevice.h:452
int num
numerator
Definition: rational.h:44
#define AV_OPT_FLAG_AUDIO_PARAM
Definition: opt.h:290
const char * b
Definition: vf_curves.c:109
void show_banner(int argc, char **argv, const OptionDef *options)
Print the program banner to stderr.
Definition: cmdutils.c:1122
static int is_device(const AVClass *avclass)
Definition: cmdutils.c:1224
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:1537
uint8_t * av_stream_get_side_data(AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
Definition: utils.c:4559
const char * arg
Definition: cmdutils.h:272
const char * sep
Option to be used as group separator.
Definition: cmdutils.h:262
#define GET_CH_LAYOUT_DESC(ch_layout)
Definition: cmdutils.h:584
static const AVOption * opt_find(void *obj, const char *name, const char *unit, int opt_flags, int search_flags)
Definition: cmdutils.c:516
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: avcodec.h:912
enum AVMediaType type
Definition: avcodec.h:3485
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:1291
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:1286
const AVClass * sws_get_class(void)
Get the AVClass for swsContext.
Definition: options.c:97
#define OPT_DOUBLE
Definition: cmdutils.h:180
static void check_options(const OptionDef *po)
Definition: cmdutils.c:478
#define OPT_FLOAT
Definition: cmdutils.h:168
AVCodec.
Definition: avcodec.h:3472
void av_max_alloc(size_t max)
Set the maximum size that may me allocated in one block.
Definition: mem.c:73
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:1612
AVDictionary * filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id, AVFormatContext *s, AVStream *st, AVCodec *codec)
Filter out options for given codec.
Definition: cmdutils.c:1928
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
void uninit_parse_context(OptionParseContext *octx)
Free all allocated memory in an OptionParseContext.
Definition: cmdutils.c:699
int av_codec_is_decoder(const AVCodec *codec)
Definition: utils.c:179
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 AVCodecDescriptor * avcodec_descriptor_next(const AVCodecDescriptor *prev)
Iterate over all codec descriptors known to libavcodec.
Definition: codec_desc.c:2945
Format I/O context.
Definition: avformat.h:1273
const AVClass * avresample_get_class(void)
Get the AVClass for AVAudioResampleContext.
Definition: options.c:110
const AVClass * avcodec_get_class(void)
Get the AVClass for AVCodecContext.
Definition: options.c:262
int av_codec_is_encoder(const AVCodec *codec)
Definition: utils.c:174
#define AV_LOG_QUIET
Print no output.
Definition: log.h:158
static int warned_cfg
Definition: cmdutils.c:1034
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
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:1421
supported_samplerates
Public dictionary API.
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:97
static void dump_argument(const char *a)
Definition: cmdutils.c:454
void register_exit(void(*cb)(int ret))
Register a program-specific cleanup routine.
Definition: cmdutils.c:111
void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
Trivial log callback.
Definition: cmdutils.c:88
uint8_t
av_cold struct SwrContext * swr_alloc(void)
Allocate SwrContext.
Definition: options.c:148
Opaque data information usually continuous.
Definition: avutil.h:195
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:526
#define OPT_OUTPUT
Definition: cmdutils.h:182
AVOptions.
#define HAS_ARG
Definition: cmdutils.h:161
#define AV_LOG_PANIC
Something went really wrong and we will crash now.
Definition: log.h:163
#define va_copy(dst, src)
Definition: va_copy.h:28
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
static const OptionGroupDef groups[]
Definition: ffmpeg_opt.c:2885
static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
Definition: cmdutils.c:1388
AVS_FilterInfo AVS_Value child
Definition: avisynth_c.h:594
#define AV_CODEC_PROP_LOSSLESS
Codec supports lossless compression.
Definition: avcodec.h:606
int opt_max_alloc(void *optctx, const char *opt, const char *arg)
Definition: cmdutils.c:997
#define media_type_string
Definition: cmdutils.h:565
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: avcodec.h:1279
int nb_opts
Definition: cmdutils.h:275
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:4309
#define OPT_OFFSET
Definition: cmdutils.h:175
static void init_parse_context(OptionParseContext *octx, const OptionGroupDef *groups, int nb_groups)
Definition: cmdutils.c:677
#define AV_IS_INPUT_DEVICE(category)
Definition: log.h:50
int show_buildconf(void *optctx, const char *opt, const char *arg)
Print the build configuration of the program to stdout.
Definition: cmdutils.c:1142
void init_opts(void)
Initialize the cmdutils option system, in particular allocate the *_opts contexts.
Definition: cmdutils.c:74
int hide_banner
Definition: cmdutils.c:72
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1341
int flags
A combination of AVFILTER_FLAG_*.
Definition: avfilter.h:513
const char * name
Definition: avcodec.h:5374
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:653
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:39
void parse_options(void *optctx, int argc, char **argv, const OptionDef *options, void(*parse_arg_function)(void *, const char *))
Definition: cmdutils.c:364
#define OPT_SPEC
Definition: cmdutils.h:176
const AVFilter * avfilter_next(const AVFilter *prev)
Iterate over all registered filters.
Definition: avfilter.c:526
static void print_all_libs_info(int flags, int level)
Definition: cmdutils.c:1069
AVInputFormat * av_input_video_device_next(AVInputFormat *d)
Video input devices iterator.
Definition: avdevice.c:109
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
const AVClass * avformat_get_class(void)
Get the AVClass for AVFormatContext.
Definition: options.c:134
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:487
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
Definition: avfilter.h:437
external API header
ptrdiff_t size
Definition: opengl_enc.c:101
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:157
int(* process_command)(AVFilterContext *, const char *cmd, const char *arg, char *res, int res_len, int flags)
Make the filter instance process a command.
Definition: avfilter.h:615
const OptionDef options[]
Definition: ffserver.c:3807
static void print_codecs(int encoder)
Definition: cmdutils.c:1476
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:428
#define av_log(a,...)
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:285
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1292
const char * name
Definition: pixdesc.h:70
AVDictionary ** setup_find_stream_info_opts(AVFormatContext *s, AVDictionary *codec_opts)
Setup AVCodecContext options for avformat_find_stream_info().
Definition: cmdutils.c:1985
AVCodec * avcodec_find_encoder_by_name(const char *name)
Find a registered encoder with the specified name.
Definition: utils.c:3002
AVDictionary * format_opts
Definition: cmdutils.c:68
int show_help(void *optctx, const char *opt, const char *arg)
Generic -h handler common to all fftools.
Definition: cmdutils.c:1825
A filter pad used for either input or output.
Definition: internal.h:63
static void * av_x_if_null(const void *p, const void *x)
Return x default pointer in case p is NULL.
Definition: avutil.h:300
Main libavdevice API header.
int flags
Option flags that must be set on each option that is applied to this group.
Definition: cmdutils.h:267
void avdevice_free_list_devices(AVDeviceInfoList **device_list)
Convenient function to free result of avdevice_list_devices().
Definition: avdevice.c:250
libswresample public header
enum AVCodecID id
Definition: avcodec.h:3486
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:102
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
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:284
#define AV_OPT_FLAG_FILTERING_PARAM
a generic parameter which can be set by the user for filtering
Definition: opt.h:302
#define AVERROR(e)
Definition: error.h:43
const char * long_name
Descriptive name for the format, meant to be more human-readable than name.
Definition: avformat.h:519
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:1674
#define sws_isSupportedOutput(x)
AVCodec * av_codec_next(const AVCodec *c)
If c is NULL, returns the first registered codec, if c is non-NULL, returns the next registered codec...
Definition: utils.c:154
The libswresample context.
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
Definition: bprint.c:69
int capabilities
Codec capabilities.
Definition: avcodec.h:3491
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:442
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:199
const char * arg
Definition: jacosubdec.c:66
#define SHOW_COPYRIGHT
Definition: cmdutils.c:1039
static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only)
Definition: cmdutils.c:1231
const char * name
Definition: cmdutils.h:159
static void show_help_muxer(const char *name)
Definition: cmdutils.c:1736
int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options)
Parse one given option.
Definition: cmdutils.c:331
Definition: graph2dot.c:48
#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:342
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:123
simple assert() macros that are a bit more flexible than ISO C assert().
#define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name)
Definition: cmdutils.c:1296
int av_log_get_level(void)
Get the current log level.
Definition: log.c:377
const char * name
Name of the codec implementation.
Definition: avcodec.h:3479
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:342
static av_always_inline av_const double round(double x)
Definition: libm.h:162
AVClassCategory category
Category used for visualization (like color) This is only set if the category is equal for all object...
Definition: log.h:130
int avdevice_list_input_sources(AVInputFormat *device, const char *device_name, AVDictionary *device_options, AVDeviceInfoList **device_list)
List devices.
Definition: avdevice.c:228
int flags
Definition: cmdutils.h:160
const char * long_name
A more descriptive name for this codec.
Definition: avcodec.h:578
const char * val
Definition: cmdutils.h:252
enum AVCodecID codec_id
Definition: mov_chan.c:433
AVDeviceInfo ** devices
list of autodetected devices
Definition: avdevice.h:460
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
GLsizei count
Definition: opengl_enc.c:109
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:1552
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
#define fail()
Definition: checkasm.h:57
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:920
void av_log_default_callback(void *ptr, int level, const char *fmt, va_list vl)
Default logging callback.
Definition: log.c:293
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:178
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:2935
AVDictionary * sws_dict
Definition: cmdutils.c:66
static const OptionDef * find_option(const OptionDef *po, const char *name)
Definition: cmdutils.c:198
AVCodecContext * codec
Codec context associated with this stream.
Definition: avformat.h:861
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:428
int opt_report(const char *opt)
Definition: cmdutils.c:992
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: avcodec.h:582
const AVFilter * avfilter_get_by_name(const char *name)
Get a filter definition matching the given name.
Definition: avfilter.c:487
const int program_birth_year
program birth year, defined by the program for show_banner()
Definition: ffmpeg.c:113
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:1481
#define AV_IS_OUTPUT_DEVICE(category)
Definition: log.h:55
AVBitStreamFilter * av_bitstream_filter_next(const AVBitStreamFilter *f)
If f is NULL, return the first registered bitstream filter, if f is non-NULL, return the next registe...
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1329
OptionGroup * groups
Definition: cmdutils.h:291
enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc)
Definition: pixdesc.c:2148
AVInputFormat * av_find_input_format(const char *short_name)
Find AVInputFormat based on the short name of the input format.
Definition: format.c:160
static const uint16_t fc[]
Definition: dcaenc.h:41
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:71
#define AV_CODEC_CAP_DRAW_HORIZ_BAND
Decoder can use draw_horiz_band callback.
Definition: avcodec.h:851
size_t off
Definition: cmdutils.h:186
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:1598
static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
Definition: cmdutils.c:93
external API header
#define FFMIN(a, b)
Definition: common.h:81
void av_log_set_callback(void(*callback)(void *, int, const char *, va_list))
Set the logging callback.
Definition: log.c:397
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
Definition: opt.h:611
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:1526
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
int avdevice_list_output_sinks(AVOutputFormat *device, const char *device_name, AVDictionary *device_options, AVDeviceInfoList **device_list)
Definition: avdevice.c:239
static void print_codecs_for_id(enum AVCodecID id, int encoder)
Definition: cmdutils.c:1409
static int init_report(const char *env)
Definition: cmdutils.c:921
const char * avio_enum_protocols(void **opaque, int output)
Iterate through names of available protocols.
Definition: avio.c:87
const char * name
Definition: avformat.h:513
#define GET_PIX_FMT_NAME(pix_fmt)
Definition: cmdutils.h:570
int32_t
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
const OptionGroupDef * group_def
Definition: cmdutils.h:289
A list of option groups that all have the same group type (e.g.
Definition: cmdutils.h:288
#define OPT_EXIT
Definition: cmdutils.h:171
void sws_freeContext(struct SwsContext *swsContext)
Free the swscaler context swsContext.
Definition: utils.c:2225
void show_help_default(const char *opt, const char *arg)
Per-fftool specific help handler.
Definition: ffmpeg_opt.c:2805
AVDictionary * resample_opts
Definition: cmdutils.c:68
#define OPT_INT64
Definition: cmdutils.h:170
AVDictionary * metadata
Definition: avformat.h:916
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
Definition: bprint.h:185
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:94
#define sws_isSupportedInput(x)
Opaque data information usually sparse.
Definition: avutil.h:197
const AVClass * swr_get_class(void)
Get the AVClass for SwrContext.
Definition: options.c:143
int opt_timelimit(void *optctx, const char *opt, const char *arg)
Limit the execution time.
Definition: cmdutils.c:1011
AVOutputFormat * av_output_video_device_next(AVOutputFormat *d)
Video output devices iterator.
Definition: avdevice.c:121
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:541
AVOutputFormat * av_oformat_next(const AVOutputFormat *f)
If f is NULL, returns the first registered output format, if f is non-NULL, returns the next register...
Definition: format.c:53
void * dst_ptr
Definition: cmdutils.h:184
const AVCodecDescriptor * avcodec_descriptor_get_by_name(const char *name)
Definition: codec_desc.c:2954
#define GET_SAMPLE_FMT_NAME(sample_fmt)
Definition: cmdutils.h:573
#define FF_ARRAY_ELEMS(a)
int flags
Definition: opt.h:284
int(* get_device_list)(struct AVFormatContext *s, struct AVDeviceInfoList *device_list)
Returns device list with it properties.
Definition: avformat.h:602
void exit_program(int ret)
Wraps exit with a program-specific cleanup routine.
Definition: cmdutils.c:116
const AVFilterPad * inputs
List of inputs, terminated by a zeroed element.
Definition: avfilter.h:490
const char * long_name
Descriptive name for the format, meant to be more human-readable than name.
Definition: avformat.h:635
#define INFINITY
Definition: math.h:27
Stream structure.
Definition: avformat.h:842
static char get_media_type_char(enum AVMediaType type)
Definition: cmdutils.c:1356
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:924
double av_strtod(const char *numstr, char **tail)
Parse the string in numstr and return its value as a double.
Definition: eval.c:93
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:176
#define GET_SAMPLE_RATE_NAME(rate)
Definition: cmdutils.h:576
external API header
const char * long_name
Descriptive name for the codec, meant to be more human readable than name.
Definition: avcodec.h:3484
const AVClass * priv_class
A class for the private data, used to declare filter private AVOptions.
Definition: avfilter.h:508
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
static const AVCodec * next_codec_for_id(enum AVCodecID id, const AVCodec *prev, int encoder)
Definition: cmdutils.c:1368
enum AVMediaType codec_type
Definition: avcodec.h:1510
const AVRational * supported_framerates
array of supported framerates, or NULL if any, array is terminated by {0,0}
Definition: avcodec.h:3492
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:59
enum AVCodecID codec_id
Definition: avcodec.h:1519
char * av_strdup(const char *s)
Duplicate the string s.
Definition: mem.c:267
int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
Show the obj options.
Definition: opt.c:1166
const char * help
Definition: cmdutils.h:188
uint8_t flags
Definition: pixdesc.h:90
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
#define AV_OPT_FLAG_VIDEO_PARAM
Definition: opt.h:291
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
Definition: utils.c:3016
int av_log_get_flags(void)
Definition: log.c:392
av_cold void swr_free(SwrContext **ss)
Free the given SwrContext and set the pointer to NULL.
Definition: swresample.c:140
void * buf
Definition: avisynth_c.h:553
GLint GLenum type
Definition: opengl_enc.c:105
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:69
Replacements for frequently missing libm functions.
#define SHOW_VERSION
Definition: cmdutils.c:1037
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:1870
const OptionGroupDef * group_def
Definition: cmdutils.h:271
#define PRINT_LIB_INFO(libname, LIBNAME, flags, level)
Definition: cmdutils.c:1041
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:470
static av_const int av_toupper(int c)
Locale-independent conversion of ASCII characters to uppercase.
Definition: avstring.h:221
enum AVCodecID subtitle_codec
default subtitle codec
Definition: avformat.h:525
rational number numerator/denominator
Definition: rational.h:43
static void expand_filename_template(AVBPrint *bp, const char *template, struct tm *tm)
Definition: cmdutils.c:893
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:286
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:145
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:2005
const char * argname
Definition: cmdutils.h:189
#define OPT_STRING
Definition: cmdutils.h:164
AVMediaType
Definition: avutil.h:191
const char * name
Filter name.
Definition: avfilter.h:474
const char * name
Name of the codec described by this descriptor.
Definition: avcodec.h:574
#define snprintf
Definition: snprintf.h:34
const char * avfilter_pad_get_name(const AVFilterPad *pads, int pad_idx)
Get the name of an AVFilterPad.
Definition: avfilter.c:1004
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:76
static void print_codec(const AVCodec *c)
Definition: cmdutils.c:1309
misc parsing utilities
int default_device
index of default device or -1 if no default
Definition: avdevice.h:462
#define AV_PIX_FMT_FLAG_BITSTREAM
All values of a component are bit-wise packed end to end.
Definition: pixdesc.h:119
struct SwsContext * sws_alloc_context(void)
Allocate an empty SwsContext.
Definition: utils.c:1022
List of devices.
Definition: avdevice.h:459
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
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:209
This struct describes the properties of a single codec described by an AVCodecID. ...
Definition: avcodec.h:566
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:124
#define OPT_TIME
Definition: cmdutils.h:179
void * av_calloc(size_t nmemb, size_t size)
Allocate a block of nmemb * size bytes with alignment suitable for all memory accesses (including vec...
Definition: mem.c:260
AVCodec * avcodec_find_decoder_by_name(const char *name)
Find a registered decoder with the specified name.
Definition: utils.c:3021
static int flags
Definition: cpu.c:47
const AVClass * priv_class
AVClass for the private context.
Definition: avcodec.h:3498
uint8_t level
Definition: svq3.c:150
static int match_group_separator(const OptionGroupDef *groups, int nb_groups, const char *opt)
Definition: cmdutils.c:614
static int swscale(SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
Definition: swscale.c:318
int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
Put a description of the AVERROR code errnum in errbuf.
Definition: error.c:68
enum AVMediaType type
Definition: avcodec.h:568
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:523
const char * extensions
If extensions are defined, then no probe is done.
Definition: avformat.h:649
#define OPT_BOOL
Definition: cmdutils.h:162
An option extracted from the commandline.
Definition: cmdutils.h:249
static FILE * report_file
Definition: cmdutils.c:70
Main libavformat public API header.
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:1024
static void filter(MpegAudioContext *s, int ch, const short *samples, int incr)
#define OPT_INT
Definition: cmdutils.h:167
AVDictionary * codec_opts
Definition: cmdutils.c:68
AVDictionary * format_opts
Definition: cmdutils.h:278
#define class
Definition: math.h:25
OptionGroupList * groups
Definition: cmdutils.h:298
#define AVFILTER_FLAG_SUPPORT_TIMELINE
Handy mask to test whether the filter supports or no the timeline feature (internally or generically)...
Definition: avfilter.h:464
static double c[64]
static void(* program_exit)(int ret)
Definition: cmdutils.c:109
OptionGroup global_opts
Definition: cmdutils.h:296
static void print_buildconf(int flags, int level)
Definition: cmdutils.c:1096
AVInputFormat * av_input_audio_device_next(AVInputFormat *d)
Audio input devices iterator.
Definition: avdevice.c:103
#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:620
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:208
char * key
Definition: dict.h:87
int den
denominator
Definition: rational.h:45
void uninit_opts(void)
Uninitialize the cmdutils option system, in particular free the *_opts contexts and their contents...
Definition: cmdutils.c:79
double av_display_rotation_get(const int32_t matrix[9])
The display transformation matrix specifies an affine transformation that should be applied to video ...
Definition: display.c:34
const char * key
Definition: cmdutils.h:251
#define AVUNERROR(e)
Definition: error.h:44
enum AVCodecID id
Definition: avcodec.h:567
#define GROW_ARRAY(array, nb_elems)
Definition: cmdutils.h:567
const OptionDef * opt
Definition: cmdutils.h:250
#define av_free(p)
const char * description
A description of the filter.
Definition: avfilter.h:481
const char * av_get_channel_name(uint64_t channel)
Get the name of a given channel.
#define AVERROR_OPTION_NOT_FOUND
Option not found.
Definition: error.h:61
char * value
Definition: dict.h:88
static int report_file_level
Definition: cmdutils.c:71
#define SHOW_CONFIG
Definition: cmdutils.c:1038
int len
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:1358
enum AVCodecID audio_codec
default audio codec
Definition: avformat.h:523
static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
Definition: cmdutils.c:270
int(* get_device_list)(struct AVFormatContext *s, struct AVDeviceInfoList *device_list)
Returns device list with it properties.
Definition: avformat.h:754
static int write_option(void *optctx, const OptionDef *po, const char *opt, const char *arg)
Definition: cmdutils.c:276
void av_log_set_flags(int arg)
Definition: log.c:387
AVDictionary * swr_opts
Definition: cmdutils.c:67
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:186
uint64_t layout
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:1645
#define GET_ARG(arg)
OptionGroup cur_group
Definition: cmdutils.h:302
int avfilter_pad_count(const AVFilterPad *pads)
Get the number of elements in a NULL-terminated array of AVFilterPads (e.g.
Definition: avfilter.c:542
int opt_cpuflags(void *optctx, const char *opt, const char *arg)
Override the cpuflags.
Definition: cmdutils.c:831
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:228
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:701
AVDictionary * codec_opts
Definition: cmdutils.h:277
Option * opts
Definition: cmdutils.h:274
int read_yesno(void)
Return a positive value if a line read from standard input starts with [yY], otherwise return 0...
Definition: cmdutils.c:1859
const AVFilterPad * outputs
List of outputs, terminated by a zeroed element.
Definition: avfilter.h:498
union OptionDef::@1 u
#define av_freep(p)
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:628
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:72
static void show_help_demuxer(const char *name)
Definition: cmdutils.c:1718
const char * av_get_channel_description(uint64_t channel)
Get the description of a given channel.
#define AV_LOG_FATAL
Something went wrong and recovery is not possible.
Definition: log.h:170
int show_version(void *optctx, const char *opt, const char *arg)
Print the version of the program to stdout.
Definition: cmdutils.c:1133
void av_force_cpu_flags(int arg)
Disables cpu detection and forces the specified flags.
Definition: cpu.c:49
#define OPT_PERFILE
Definition: cmdutils.h:173
AVDictionary * sws_dict
Definition: cmdutils.h:280
#define OPT_INPUT
Definition: cmdutils.h:181
const char * extensions
comma-separated filename extensions
Definition: avformat.h:521
const char * mime_type
Definition: avformat.h:520
int nb_devices
number of autodetected devices
Definition: avdevice.h:461
float min
static void print_program_info(int flags, int level)
Definition: cmdutils.c:1082
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:369
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:252
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:857
const char program_name[]
program name, defined by the program for show_version().
Definition: ffmpeg.c:112
AVInputFormat * av_iformat_next(const AVInputFormat *f)
If f is NULL, returns the first registered input format, if f is non-NULL, returns the next registere...
Definition: format.c:45
static void show_help_codec(const char *name, int encoder)
Definition: cmdutils.c:1683
static int compare_codec_desc(const void *a, const void *b)
Definition: cmdutils.c:1379
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:1520
simple arithmetic expression evaluator
const AVPixFmtDescriptor * av_pix_fmt_desc_next(const AVPixFmtDescriptor *prev)
Iterate over all pixel format descriptors known to libavutil.
Definition: pixdesc.c:2136
const char * name
Definition: opengl_enc.c:103
static void add_opt(OptionParseContext *octx, const OptionDef *opt, const char *key, const char *val)
Definition: cmdutils.c:665
void av_bprint_chars(AVBPrint *buf, char c, unsigned n)
Append char c n times to a print buffer.
Definition: bprint.c:140