FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
cmdutils.c
Go to the documentation of this file.
1 /*
2  * Various utilities for command line tools
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <string.h>
23 #include <stdint.h>
24 #include <stdlib.h>
25 #include <errno.h>
26 #include <math.h>
27 
28 /* Include only the enabled headers since some compilers (namely, Sun
29  Studio) will not omit unused inline functions and create undefined
30  references to libraries that are not being built. */
31 
32 #include "config.h"
33 #include "compat/va_copy.h"
34 #include "libavformat/avformat.h"
35 #include "libavfilter/avfilter.h"
36 #include "libavdevice/avdevice.h"
38 #include "libswscale/swscale.h"
41 #include "libavutil/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 "libavutil/version.h"
56 #include "cmdutils.h"
57 #if CONFIG_NETWORK
58 #include "libavformat/network.h"
59 #endif
60 #if HAVE_SYS_RESOURCE_H
61 #include <sys/time.h>
62 #include <sys/resource.h>
63 #endif
64 #ifdef _WIN32
65 #include <windows.h>
66 #endif
67 
68 static int init_report(const char *env);
69 
73 
74 static FILE *report_file;
76 int hide_banner = 0;
77 
82 };
83 
84 void init_opts(void)
85 {
86  av_dict_set(&sws_dict, "flags", "bicubic", 0);
87 }
88 
89 void uninit_opts(void)
90 {
91  av_dict_free(&swr_opts);
92  av_dict_free(&sws_dict);
93  av_dict_free(&format_opts);
94  av_dict_free(&codec_opts);
95  av_dict_free(&resample_opts);
96 }
97 
98 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
99 {
100  vfprintf(stdout, fmt, vl);
101 }
102 
103 static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
104 {
105  va_list vl2;
106  char line[1024];
107  static int print_prefix = 1;
108 
109  va_copy(vl2, vl);
110  av_log_default_callback(ptr, level, fmt, vl);
111  av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
112  va_end(vl2);
113  if (report_file_level >= level) {
114  fputs(line, report_file);
115  fflush(report_file);
116  }
117 }
118 
119 void init_dynload(void)
120 {
121 #ifdef _WIN32
122  /* Calling SetDllDirectory with the empty string (but not NULL) removes the
123  * current working directory from the DLL search path as a security pre-caution. */
124  SetDllDirectory("");
125 #endif
126 }
127 
128 static void (*program_exit)(int ret);
129 
130 void register_exit(void (*cb)(int ret))
131 {
132  program_exit = cb;
133 }
134 
135 void exit_program(int ret)
136 {
137  if (program_exit)
138  program_exit(ret);
139 
140  exit(ret);
141 }
142 
143 double parse_number_or_die(const char *context, const char *numstr, int type,
144  double min, double max)
145 {
146  char *tail;
147  const char *error;
148  double d = av_strtod(numstr, &tail);
149  if (*tail)
150  error = "Expected number for %s but found: %s\n";
151  else if (d < min || d > max)
152  error = "The value for %s was %s which is not within %f - %f\n";
153  else if (type == OPT_INT64 && (int64_t)d != d)
154  error = "Expected int64 for %s but found %s\n";
155  else if (type == OPT_INT && (int)d != d)
156  error = "Expected int for %s but found %s\n";
157  else
158  return d;
159  av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
160  exit_program(1);
161  return 0;
162 }
163 
164 int64_t parse_time_or_die(const char *context, const char *timestr,
165  int is_duration)
166 {
167  int64_t us;
168  if (av_parse_time(&us, timestr, is_duration) < 0) {
169  av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
170  is_duration ? "duration" : "date", context, timestr);
171  exit_program(1);
172  }
173  return us;
174 }
175 
176 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
177  int rej_flags, int alt_flags)
178 {
179  const OptionDef *po;
180  int first;
181 
182  first = 1;
183  for (po = options; po->name; po++) {
184  char buf[64];
185 
186  if (((po->flags & req_flags) != req_flags) ||
187  (alt_flags && !(po->flags & alt_flags)) ||
188  (po->flags & rej_flags))
189  continue;
190 
191  if (first) {
192  printf("%s\n", msg);
193  first = 0;
194  }
195  av_strlcpy(buf, po->name, sizeof(buf));
196  if (po->argname) {
197  av_strlcat(buf, " ", sizeof(buf));
198  av_strlcat(buf, po->argname, sizeof(buf));
199  }
200  printf("-%-17s %s\n", buf, po->help);
201  }
202  printf("\n");
203 }
204 
205 void show_help_children(const AVClass *class, int flags)
206 {
207  const AVClass *child = NULL;
208  if (class->option) {
209  av_opt_show2(&class, NULL, flags, 0);
210  printf("\n");
211  }
212 
213  while (child = av_opt_child_class_next(class, child))
214  show_help_children(child, flags);
215 }
216 
217 static const OptionDef *find_option(const OptionDef *po, const char *name)
218 {
219  const char *p = strchr(name, ':');
220  int len = p ? p - name : strlen(name);
221 
222  while (po->name) {
223  if (!strncmp(name, po->name, len) && strlen(po->name) == len)
224  break;
225  po++;
226  }
227  return po;
228 }
229 
230 /* _WIN32 means using the windows libc - cygwin doesn't define that
231  * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
232  * it doesn't provide the actual command line via GetCommandLineW(). */
233 #if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
234 #include <shellapi.h>
235 /* Will be leaked on exit */
236 static char** win32_argv_utf8 = NULL;
237 static int win32_argc = 0;
238 
239 /**
240  * Prepare command line arguments for executable.
241  * For Windows - perform wide-char to UTF-8 conversion.
242  * Input arguments should be main() function arguments.
243  * @param argc_ptr Arguments number (including executable)
244  * @param argv_ptr Arguments list.
245  */
246 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
247 {
248  char *argstr_flat;
249  wchar_t **argv_w;
250  int i, buffsize = 0, offset = 0;
251 
252  if (win32_argv_utf8) {
253  *argc_ptr = win32_argc;
254  *argv_ptr = win32_argv_utf8;
255  return;
256  }
257 
258  win32_argc = 0;
259  argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
260  if (win32_argc <= 0 || !argv_w)
261  return;
262 
263  /* determine the UTF-8 buffer size (including NULL-termination symbols) */
264  for (i = 0; i < win32_argc; i++)
265  buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
266  NULL, 0, NULL, NULL);
267 
268  win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
269  argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
270  if (!win32_argv_utf8) {
271  LocalFree(argv_w);
272  return;
273  }
274 
275  for (i = 0; i < win32_argc; i++) {
276  win32_argv_utf8[i] = &argstr_flat[offset];
277  offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
278  &argstr_flat[offset],
279  buffsize - offset, NULL, NULL);
280  }
281  win32_argv_utf8[i] = NULL;
282  LocalFree(argv_w);
283 
284  *argc_ptr = win32_argc;
285  *argv_ptr = win32_argv_utf8;
286 }
287 #else
288 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
289 {
290  /* nothing to do */
291 }
292 #endif /* HAVE_COMMANDLINETOARGVW */
293 
294 static int write_option(void *optctx, const OptionDef *po, const char *opt,
295  const char *arg)
296 {
297  /* new-style options contain an offset into optctx, old-style address of
298  * a global var*/
299  void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
300  (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
301  int *dstcount;
302 
303  if (po->flags & OPT_SPEC) {
304  SpecifierOpt **so = dst;
305  char *p = strchr(opt, ':');
306  char *str;
307 
308  dstcount = (int *)(so + 1);
309  *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
310  str = av_strdup(p ? p + 1 : "");
311  if (!str)
312  return AVERROR(ENOMEM);
313  (*so)[*dstcount - 1].specifier = str;
314  dst = &(*so)[*dstcount - 1].u;
315  }
316 
317  if (po->flags & OPT_STRING) {
318  char *str;
319  str = av_strdup(arg);
320  av_freep(dst);
321  if (!str)
322  return AVERROR(ENOMEM);
323  *(char **)dst = str;
324  } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
325  *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
326  } else if (po->flags & OPT_INT64) {
327  *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
328  } else if (po->flags & OPT_TIME) {
329  *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
330  } else if (po->flags & OPT_FLOAT) {
331  *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
332  } else if (po->flags & OPT_DOUBLE) {
333  *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
334  } else if (po->u.func_arg) {
335  int ret = po->u.func_arg(optctx, opt, arg);
336  if (ret < 0) {
338  "Failed to set value '%s' for option '%s': %s\n",
339  arg, opt, av_err2str(ret));
340  return ret;
341  }
342  }
343  if (po->flags & OPT_EXIT)
344  exit_program(0);
345 
346  return 0;
347 }
348 
349 int parse_option(void *optctx, const char *opt, const char *arg,
350  const OptionDef *options)
351 {
352  const OptionDef *po;
353  int ret;
354 
355  po = find_option(options, opt);
356  if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
357  /* handle 'no' bool option */
358  po = find_option(options, opt + 2);
359  if ((po->name && (po->flags & OPT_BOOL)))
360  arg = "0";
361  } else if (po->flags & OPT_BOOL)
362  arg = "1";
363 
364  if (!po->name)
365  po = find_option(options, "default");
366  if (!po->name) {
367  av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
368  return AVERROR(EINVAL);
369  }
370  if (po->flags & HAS_ARG && !arg) {
371  av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
372  return AVERROR(EINVAL);
373  }
374 
375  ret = write_option(optctx, po, opt, arg);
376  if (ret < 0)
377  return ret;
378 
379  return !!(po->flags & HAS_ARG);
380 }
381 
382 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
383  void (*parse_arg_function)(void *, const char*))
384 {
385  const char *opt;
386  int optindex, handleoptions = 1, ret;
387 
388  /* perform system-dependent conversions for arguments list */
389  prepare_app_arguments(&argc, &argv);
390 
391  /* parse options */
392  optindex = 1;
393  while (optindex < argc) {
394  opt = argv[optindex++];
395 
396  if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
397  if (opt[1] == '-' && opt[2] == '\0') {
398  handleoptions = 0;
399  continue;
400  }
401  opt++;
402 
403  if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
404  exit_program(1);
405  optindex += ret;
406  } else {
407  if (parse_arg_function)
408  parse_arg_function(optctx, opt);
409  }
410  }
411 }
412 
413 int parse_optgroup(void *optctx, OptionGroup *g)
414 {
415  int i, ret;
416 
417  av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
418  g->group_def->name, g->arg);
419 
420  for (i = 0; i < g->nb_opts; i++) {
421  Option *o = &g->opts[i];
422 
423  if (g->group_def->flags &&
424  !(g->group_def->flags & o->opt->flags)) {
425  av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
426  "%s %s -- you are trying to apply an input option to an "
427  "output file or vice versa. Move this option before the "
428  "file it belongs to.\n", o->key, o->opt->help,
429  g->group_def->name, g->arg);
430  return AVERROR(EINVAL);
431  }
432 
433  av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
434  o->key, o->opt->help, o->val);
435 
436  ret = write_option(optctx, o->opt, o->key, o->val);
437  if (ret < 0)
438  return ret;
439  }
440 
441  av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
442 
443  return 0;
444 }
445 
446 int locate_option(int argc, char **argv, const OptionDef *options,
447  const char *optname)
448 {
449  const OptionDef *po;
450  int i;
451 
452  for (i = 1; i < argc; i++) {
453  const char *cur_opt = argv[i];
454 
455  if (*cur_opt++ != '-')
456  continue;
457 
458  po = find_option(options, cur_opt);
459  if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
460  po = find_option(options, cur_opt + 2);
461 
462  if ((!po->name && !strcmp(cur_opt, optname)) ||
463  (po->name && !strcmp(optname, po->name)))
464  return i;
465 
466  if (!po->name || po->flags & HAS_ARG)
467  i++;
468  }
469  return 0;
470 }
471 
472 static void dump_argument(const char *a)
473 {
474  const unsigned char *p;
475 
476  for (p = a; *p; p++)
477  if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
478  *p == '_' || (*p >= 'a' && *p <= 'z')))
479  break;
480  if (!*p) {
481  fputs(a, report_file);
482  return;
483  }
484  fputc('"', report_file);
485  for (p = a; *p; p++) {
486  if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
487  fprintf(report_file, "\\%c", *p);
488  else if (*p < ' ' || *p > '~')
489  fprintf(report_file, "\\x%02x", *p);
490  else
491  fputc(*p, report_file);
492  }
493  fputc('"', report_file);
494 }
495 
496 static void check_options(const OptionDef *po)
497 {
498  while (po->name) {
499  if (po->flags & OPT_PERFILE)
501  po++;
502  }
503 }
504 
505 void parse_loglevel(int argc, char **argv, const OptionDef *options)
506 {
507  int idx = locate_option(argc, argv, options, "loglevel");
508  const char *env;
509 
510  check_options(options);
511 
512  if (!idx)
513  idx = locate_option(argc, argv, options, "v");
514  if (idx && argv[idx + 1])
515  opt_loglevel(NULL, "loglevel", argv[idx + 1]);
516  idx = locate_option(argc, argv, options, "report");
517  if ((env = getenv("FFREPORT")) || idx) {
518  init_report(env);
519  if (report_file) {
520  int i;
521  fprintf(report_file, "Command line:\n");
522  for (i = 0; i < argc; i++) {
523  dump_argument(argv[i]);
524  fputc(i < argc - 1 ? ' ' : '\n', report_file);
525  }
526  fflush(report_file);
527  }
528  }
529  idx = locate_option(argc, argv, options, "hide_banner");
530  if (idx)
531  hide_banner = 1;
532 }
533 
534 static const AVOption *opt_find(void *obj, const char *name, const char *unit,
535  int opt_flags, int search_flags)
536 {
537  const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
538  if(o && !o->flags)
539  return NULL;
540  return o;
541 }
542 
543 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS && (arg[0]=='-' || arg[0]=='+')) ? AV_DICT_APPEND : 0
544 int opt_default(void *optctx, const char *opt, const char *arg)
545 {
546  const AVOption *o;
547  int consumed = 0;
548  char opt_stripped[128];
549  const char *p;
550  const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
551 #if CONFIG_AVRESAMPLE
552  const AVClass *rc = avresample_get_class();
553 #endif
554 #if CONFIG_SWSCALE
555  const AVClass *sc = sws_get_class();
556 #endif
557 #if CONFIG_SWRESAMPLE
558  const AVClass *swr_class = swr_get_class();
559 #endif
560 
561  if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
563 
564  if (!(p = strchr(opt, ':')))
565  p = opt + strlen(opt);
566  av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
567 
568  if ((o = opt_find(&cc, opt_stripped, NULL, 0,
570  ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
571  (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
572  av_dict_set(&codec_opts, opt, arg, FLAGS);
573  consumed = 1;
574  }
575  if ((o = opt_find(&fc, opt, NULL, 0,
577  av_dict_set(&format_opts, opt, arg, FLAGS);
578  if (consumed)
579  av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
580  consumed = 1;
581  }
582 #if CONFIG_SWSCALE
583  if (!consumed && (o = opt_find(&sc, opt, NULL, 0,
585  struct SwsContext *sws = sws_alloc_context();
586  int ret = av_opt_set(sws, opt, arg, 0);
587  sws_freeContext(sws);
588  if (!strcmp(opt, "srcw") || !strcmp(opt, "srch") ||
589  !strcmp(opt, "dstw") || !strcmp(opt, "dsth") ||
590  !strcmp(opt, "src_format") || !strcmp(opt, "dst_format")) {
591  av_log(NULL, AV_LOG_ERROR, "Directly using swscale dimensions/format options is not supported, please use the -s or -pix_fmt options\n");
592  return AVERROR(EINVAL);
593  }
594  if (ret < 0) {
595  av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
596  return ret;
597  }
598 
599  av_dict_set(&sws_dict, opt, arg, FLAGS);
600 
601  consumed = 1;
602  }
603 #else
604  if (!consumed && !strcmp(opt, "sws_flags")) {
605  av_log(NULL, AV_LOG_WARNING, "Ignoring %s %s, due to disabled swscale\n", opt, arg);
606  consumed = 1;
607  }
608 #endif
609 #if CONFIG_SWRESAMPLE
610  if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
612  struct SwrContext *swr = swr_alloc();
613  int ret = av_opt_set(swr, opt, arg, 0);
614  swr_free(&swr);
615  if (ret < 0) {
616  av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
617  return ret;
618  }
619  av_dict_set(&swr_opts, opt, arg, FLAGS);
620  consumed = 1;
621  }
622 #endif
623 #if CONFIG_AVRESAMPLE
624  if ((o=opt_find(&rc, opt, NULL, 0,
626  av_dict_set(&resample_opts, opt, arg, FLAGS);
627  consumed = 1;
628  }
629 #endif
630 
631  if (consumed)
632  return 0;
634 }
635 
636 /*
637  * Check whether given option is a group separator.
638  *
639  * @return index of the group definition that matched or -1 if none
640  */
641 static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
642  const char *opt)
643 {
644  int i;
645 
646  for (i = 0; i < nb_groups; i++) {
647  const OptionGroupDef *p = &groups[i];
648  if (p->sep && !strcmp(p->sep, opt))
649  return i;
650  }
651 
652  return -1;
653 }
654 
655 /*
656  * Finish parsing an option group.
657  *
658  * @param group_idx which group definition should this group belong to
659  * @param arg argument of the group delimiting option
660  */
661 static void finish_group(OptionParseContext *octx, int group_idx,
662  const char *arg)
663 {
664  OptionGroupList *l = &octx->groups[group_idx];
665  OptionGroup *g;
666 
667  GROW_ARRAY(l->groups, l->nb_groups);
668  g = &l->groups[l->nb_groups - 1];
669 
670  *g = octx->cur_group;
671  g->arg = arg;
672  g->group_def = l->group_def;
673  g->sws_dict = sws_dict;
674  g->swr_opts = swr_opts;
675  g->codec_opts = codec_opts;
678 
679  codec_opts = NULL;
680  format_opts = NULL;
681  resample_opts = NULL;
682  sws_dict = NULL;
683  swr_opts = NULL;
684  init_opts();
685 
686  memset(&octx->cur_group, 0, sizeof(octx->cur_group));
687 }
688 
689 /*
690  * Add an option instance to currently parsed group.
691  */
692 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
693  const char *key, const char *val)
694 {
695  int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
696  OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
697 
698  GROW_ARRAY(g->opts, g->nb_opts);
699  g->opts[g->nb_opts - 1].opt = opt;
700  g->opts[g->nb_opts - 1].key = key;
701  g->opts[g->nb_opts - 1].val = val;
702 }
703 
705  const OptionGroupDef *groups, int nb_groups)
706 {
707  static const OptionGroupDef global_group = { "global" };
708  int i;
709 
710  memset(octx, 0, sizeof(*octx));
711 
712  octx->nb_groups = nb_groups;
713  octx->groups = av_mallocz_array(octx->nb_groups, sizeof(*octx->groups));
714  if (!octx->groups)
715  exit_program(1);
716 
717  for (i = 0; i < octx->nb_groups; i++)
718  octx->groups[i].group_def = &groups[i];
719 
720  octx->global_opts.group_def = &global_group;
721  octx->global_opts.arg = "";
722 
723  init_opts();
724 }
725 
727 {
728  int i, j;
729 
730  for (i = 0; i < octx->nb_groups; i++) {
731  OptionGroupList *l = &octx->groups[i];
732 
733  for (j = 0; j < l->nb_groups; j++) {
734  av_freep(&l->groups[j].opts);
738 
739  av_dict_free(&l->groups[j].sws_dict);
740  av_dict_free(&l->groups[j].swr_opts);
741  }
742  av_freep(&l->groups);
743  }
744  av_freep(&octx->groups);
745 
746  av_freep(&octx->cur_group.opts);
747  av_freep(&octx->global_opts.opts);
748 
749  uninit_opts();
750 }
751 
752 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
753  const OptionDef *options,
754  const OptionGroupDef *groups, int nb_groups)
755 {
756  int optindex = 1;
757  int dashdash = -2;
758 
759  /* perform system-dependent conversions for arguments list */
760  prepare_app_arguments(&argc, &argv);
761 
762  init_parse_context(octx, groups, nb_groups);
763  av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
764 
765  while (optindex < argc) {
766  const char *opt = argv[optindex++], *arg;
767  const OptionDef *po;
768  int ret;
769 
770  av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
771 
772  if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
773  dashdash = optindex;
774  continue;
775  }
776  /* unnamed group separators, e.g. output filename */
777  if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
778  finish_group(octx, 0, opt);
779  av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
780  continue;
781  }
782  opt++;
783 
784 #define GET_ARG(arg) \
785 do { \
786  arg = argv[optindex++]; \
787  if (!arg) { \
788  av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
789  return AVERROR(EINVAL); \
790  } \
791 } while (0)
792 
793  /* named group separators, e.g. -i */
794  if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
795  GET_ARG(arg);
796  finish_group(octx, ret, arg);
797  av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
798  groups[ret].name, arg);
799  continue;
800  }
801 
802  /* normal options */
803  po = find_option(options, opt);
804  if (po->name) {
805  if (po->flags & OPT_EXIT) {
806  /* optional argument, e.g. -h */
807  arg = argv[optindex++];
808  } else if (po->flags & HAS_ARG) {
809  GET_ARG(arg);
810  } else {
811  arg = "1";
812  }
813 
814  add_opt(octx, po, opt, arg);
815  av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
816  "argument '%s'.\n", po->name, po->help, arg);
817  continue;
818  }
819 
820  /* AVOptions */
821  if (argv[optindex]) {
822  ret = opt_default(NULL, opt, argv[optindex]);
823  if (ret >= 0) {
824  av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
825  "argument '%s'.\n", opt, argv[optindex]);
826  optindex++;
827  continue;
828  } else if (ret != AVERROR_OPTION_NOT_FOUND) {
829  av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
830  "with argument '%s'.\n", opt, argv[optindex]);
831  return ret;
832  }
833  }
834 
835  /* boolean -nofoo options */
836  if (opt[0] == 'n' && opt[1] == 'o' &&
837  (po = find_option(options, opt + 2)) &&
838  po->name && po->flags & OPT_BOOL) {
839  add_opt(octx, po, opt, "0");
840  av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
841  "argument 0.\n", po->name, po->help);
842  continue;
843  }
844 
845  av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
847  }
848 
849  if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
850  av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
851  "commandline.\n");
852 
853  av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
854 
855  return 0;
856 }
857 
858 int opt_cpuflags(void *optctx, const char *opt, const char *arg)
859 {
860  int ret;
861  unsigned flags = av_get_cpu_flags();
862 
863  if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
864  return ret;
865 
866  av_force_cpu_flags(flags);
867  return 0;
868 }
869 
870 int opt_loglevel(void *optctx, const char *opt, const char *arg)
871 {
872  const struct { const char *name; int level; } log_levels[] = {
873  { "quiet" , AV_LOG_QUIET },
874  { "panic" , AV_LOG_PANIC },
875  { "fatal" , AV_LOG_FATAL },
876  { "error" , AV_LOG_ERROR },
877  { "warning", AV_LOG_WARNING },
878  { "info" , AV_LOG_INFO },
879  { "verbose", AV_LOG_VERBOSE },
880  { "debug" , AV_LOG_DEBUG },
881  { "trace" , AV_LOG_TRACE },
882  };
883  char *tail;
884  int level;
885  int flags;
886  int i;
887 
888  flags = av_log_get_flags();
889  tail = strstr(arg, "repeat");
890  if (tail)
891  flags &= ~AV_LOG_SKIP_REPEATED;
892  else
893  flags |= AV_LOG_SKIP_REPEATED;
894 
895  av_log_set_flags(flags);
896  if (tail == arg)
897  arg += 6 + (arg[6]=='+');
898  if(tail && !*arg)
899  return 0;
900 
901  for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
902  if (!strcmp(log_levels[i].name, arg)) {
903  av_log_set_level(log_levels[i].level);
904  return 0;
905  }
906  }
907 
908  level = strtol(arg, &tail, 10);
909  if (*tail) {
910  av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
911  "Possible levels are numbers or:\n", arg);
912  for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
913  av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
914  exit_program(1);
915  }
916  av_log_set_level(level);
917  return 0;
918 }
919 
920 static void expand_filename_template(AVBPrint *bp, const char *template,
921  struct tm *tm)
922 {
923  int c;
924 
925  while ((c = *(template++))) {
926  if (c == '%') {
927  if (!(c = *(template++)))
928  break;
929  switch (c) {
930  case 'p':
931  av_bprintf(bp, "%s", program_name);
932  break;
933  case 't':
934  av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
935  tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
936  tm->tm_hour, tm->tm_min, tm->tm_sec);
937  break;
938  case '%':
939  av_bprint_chars(bp, c, 1);
940  break;
941  }
942  } else {
943  av_bprint_chars(bp, c, 1);
944  }
945  }
946 }
947 
948 static int init_report(const char *env)
949 {
950  char *filename_template = NULL;
951  char *key, *val;
952  int ret, count = 0;
953  time_t now;
954  struct tm *tm;
955  AVBPrint filename;
956 
957  if (report_file) /* already opened */
958  return 0;
959  time(&now);
960  tm = localtime(&now);
961 
962  while (env && *env) {
963  if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
964  if (count)
966  "Failed to parse FFREPORT environment variable: %s\n",
967  av_err2str(ret));
968  break;
969  }
970  if (*env)
971  env++;
972  count++;
973  if (!strcmp(key, "file")) {
974  av_free(filename_template);
975  filename_template = val;
976  val = NULL;
977  } else if (!strcmp(key, "level")) {
978  char *tail;
979  report_file_level = strtol(val, &tail, 10);
980  if (*tail) {
981  av_log(NULL, AV_LOG_FATAL, "Invalid report file level\n");
982  exit_program(1);
983  }
984  } else {
985  av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
986  }
987  av_free(val);
988  av_free(key);
989  }
990 
991  av_bprint_init(&filename, 0, 1);
992  expand_filename_template(&filename,
993  av_x_if_null(filename_template, "%p-%t.log"), tm);
994  av_free(filename_template);
995  if (!av_bprint_is_complete(&filename)) {
996  av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
997  return AVERROR(ENOMEM);
998  }
999 
1000  report_file = fopen(filename.str, "w");
1001  if (!report_file) {
1002  int ret = AVERROR(errno);
1003  av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
1004  filename.str, strerror(errno));
1005  return ret;
1006  }
1009  "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
1010  "Report written to \"%s\"\n",
1011  program_name,
1012  tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
1013  tm->tm_hour, tm->tm_min, tm->tm_sec,
1014  filename.str);
1015  av_bprint_finalize(&filename, NULL);
1016  return 0;
1017 }
1018 
1019 int opt_report(const char *opt)
1020 {
1021  return init_report(NULL);
1022 }
1023 
1024 int opt_max_alloc(void *optctx, const char *opt, const char *arg)
1025 {
1026  char *tail;
1027  size_t max;
1028 
1029  max = strtol(arg, &tail, 10);
1030  if (*tail) {
1031  av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
1032  exit_program(1);
1033  }
1034  av_max_alloc(max);
1035  return 0;
1036 }
1037 
1038 int opt_timelimit(void *optctx, const char *opt, const char *arg)
1039 {
1040 #if HAVE_SETRLIMIT
1041  int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
1042  struct rlimit rl = { lim, lim + 1 };
1043  if (setrlimit(RLIMIT_CPU, &rl))
1044  perror("setrlimit");
1045 #else
1046  av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
1047 #endif
1048  return 0;
1049 }
1050 
1051 void print_error(const char *filename, int err)
1052 {
1053  char errbuf[128];
1054  const char *errbuf_ptr = errbuf;
1055 
1056  if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
1057  errbuf_ptr = strerror(AVUNERROR(err));
1058  av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
1059 }
1060 
1061 static int warned_cfg = 0;
1062 
1063 #define INDENT 1
1064 #define SHOW_VERSION 2
1065 #define SHOW_CONFIG 4
1066 #define SHOW_COPYRIGHT 8
1067 
1068 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
1069  if (CONFIG_##LIBNAME) { \
1070  const char *indent = flags & INDENT? " " : ""; \
1071  if (flags & SHOW_VERSION) { \
1072  unsigned int version = libname##_version(); \
1073  av_log(NULL, level, \
1074  "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n", \
1075  indent, #libname, \
1076  LIB##LIBNAME##_VERSION_MAJOR, \
1077  LIB##LIBNAME##_VERSION_MINOR, \
1078  LIB##LIBNAME##_VERSION_MICRO, \
1079  AV_VERSION_MAJOR(version), AV_VERSION_MINOR(version),\
1080  AV_VERSION_MICRO(version)); \
1081  } \
1082  if (flags & SHOW_CONFIG) { \
1083  const char *cfg = libname##_configuration(); \
1084  if (strcmp(FFMPEG_CONFIGURATION, cfg)) { \
1085  if (!warned_cfg) { \
1086  av_log(NULL, level, \
1087  "%sWARNING: library configuration mismatch\n", \
1088  indent); \
1089  warned_cfg = 1; \
1090  } \
1091  av_log(NULL, level, "%s%-11s configuration: %s\n", \
1092  indent, #libname, cfg); \
1093  } \
1094  } \
1095  } \
1096 
1097 static void print_all_libs_info(int flags, int level)
1098 {
1099  PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
1100  PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
1101  PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
1102  PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
1103  PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
1104  PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
1105  PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
1106  PRINT_LIB_INFO(swresample, SWRESAMPLE, flags, level);
1107  PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
1108 }
1109 
1110 static void print_program_info(int flags, int level)
1111 {
1112  const char *indent = flags & INDENT? " " : "";
1113 
1114  av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
1115  if (flags & SHOW_COPYRIGHT)
1116  av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
1117  program_birth_year, CONFIG_THIS_YEAR);
1118  av_log(NULL, level, "\n");
1119  av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
1120 
1121  av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
1122 }
1123 
1124 static void print_buildconf(int flags, int level)
1125 {
1126  const char *indent = flags & INDENT ? " " : "";
1127  char str[] = { FFMPEG_CONFIGURATION };
1128  char *conflist, *remove_tilde, *splitconf;
1129 
1130  // Change all the ' --' strings to '~--' so that
1131  // they can be identified as tokens.
1132  while ((conflist = strstr(str, " --")) != NULL) {
1133  strncpy(conflist, "~--", 3);
1134  }
1135 
1136  // Compensate for the weirdness this would cause
1137  // when passing 'pkg-config --static'.
1138  while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
1139  strncpy(remove_tilde, "pkg-config ", 11);
1140  }
1141 
1142  splitconf = strtok(str, "~");
1143  av_log(NULL, level, "\n%sconfiguration:\n", indent);
1144  while (splitconf != NULL) {
1145  av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
1146  splitconf = strtok(NULL, "~");
1147  }
1148 }
1149 
1150 void show_banner(int argc, char **argv, const OptionDef *options)
1151 {
1152  int idx = locate_option(argc, argv, options, "version");
1153  if (hide_banner || idx)
1154  return;
1155 
1159 }
1160 
1161 int show_version(void *optctx, const char *opt, const char *arg)
1162 {
1166 
1167  return 0;
1168 }
1169 
1170 int show_buildconf(void *optctx, const char *opt, const char *arg)
1171 {
1174 
1175  return 0;
1176 }
1177 
1178 int show_license(void *optctx, const char *opt, const char *arg)
1179 {
1180 #if CONFIG_NONFREE
1181  printf(
1182  "This version of %s has nonfree parts compiled in.\n"
1183  "Therefore it is not legally redistributable.\n",
1184  program_name );
1185 #elif CONFIG_GPLV3
1186  printf(
1187  "%s is free software; you can redistribute it and/or modify\n"
1188  "it under the terms of the GNU General Public License as published by\n"
1189  "the Free Software Foundation; either version 3 of the License, or\n"
1190  "(at your option) any later version.\n"
1191  "\n"
1192  "%s is distributed in the hope that it will be useful,\n"
1193  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1194  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1195  "GNU General Public License for more details.\n"
1196  "\n"
1197  "You should have received a copy of the GNU General Public License\n"
1198  "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1200 #elif CONFIG_GPL
1201  printf(
1202  "%s is free software; you can redistribute it and/or modify\n"
1203  "it under the terms of the GNU General Public License as published by\n"
1204  "the Free Software Foundation; either version 2 of the License, or\n"
1205  "(at your option) any later version.\n"
1206  "\n"
1207  "%s is distributed in the hope that it will be useful,\n"
1208  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1209  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1210  "GNU General Public License for more details.\n"
1211  "\n"
1212  "You should have received a copy of the GNU General Public License\n"
1213  "along with %s; if not, write to the Free Software\n"
1214  "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1216 #elif CONFIG_LGPLV3
1217  printf(
1218  "%s is free software; you can redistribute it and/or modify\n"
1219  "it under the terms of the GNU Lesser General Public License as published by\n"
1220  "the Free Software Foundation; either version 3 of the License, or\n"
1221  "(at your option) any later version.\n"
1222  "\n"
1223  "%s is distributed in the hope that it will be useful,\n"
1224  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1225  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1226  "GNU Lesser General Public License for more details.\n"
1227  "\n"
1228  "You should have received a copy of the GNU Lesser General Public License\n"
1229  "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1231 #else
1232  printf(
1233  "%s is free software; you can redistribute it and/or\n"
1234  "modify it under the terms of the GNU Lesser General Public\n"
1235  "License as published by the Free Software Foundation; either\n"
1236  "version 2.1 of the License, or (at your option) any later version.\n"
1237  "\n"
1238  "%s is distributed in the hope that it will be useful,\n"
1239  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1240  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
1241  "Lesser General Public License for more details.\n"
1242  "\n"
1243  "You should have received a copy of the GNU Lesser General Public\n"
1244  "License along with %s; if not, write to the Free Software\n"
1245  "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1247 #endif
1248 
1249  return 0;
1250 }
1251 
1252 static int is_device(const AVClass *avclass)
1253 {
1254  if (!avclass)
1255  return 0;
1256  return AV_IS_INPUT_DEVICE(avclass->category) || AV_IS_OUTPUT_DEVICE(avclass->category);
1257 }
1258 
1259 static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only, int muxdemuxers)
1260 {
1261  AVInputFormat *ifmt = NULL;
1262  AVOutputFormat *ofmt = NULL;
1263  const char *last_name;
1264  int is_dev;
1265 
1266  printf("%s\n"
1267  " D. = Demuxing supported\n"
1268  " .E = Muxing supported\n"
1269  " --\n", device_only ? "Devices:" : "File formats:");
1270  last_name = "000";
1271  for (;;) {
1272  int decode = 0;
1273  int encode = 0;
1274  const char *name = NULL;
1275  const char *long_name = NULL;
1276 
1277  if (muxdemuxers !=SHOW_DEMUXERS) {
1278  while ((ofmt = av_oformat_next(ofmt))) {
1279  is_dev = is_device(ofmt->priv_class);
1280  if (!is_dev && device_only)
1281  continue;
1282  if ((!name || strcmp(ofmt->name, name) < 0) &&
1283  strcmp(ofmt->name, last_name) > 0) {
1284  name = ofmt->name;
1285  long_name = ofmt->long_name;
1286  encode = 1;
1287  }
1288  }
1289  }
1290  if (muxdemuxers != SHOW_MUXERS) {
1291  while ((ifmt = av_iformat_next(ifmt))) {
1292  is_dev = is_device(ifmt->priv_class);
1293  if (!is_dev && device_only)
1294  continue;
1295  if ((!name || strcmp(ifmt->name, name) < 0) &&
1296  strcmp(ifmt->name, last_name) > 0) {
1297  name = ifmt->name;
1298  long_name = ifmt->long_name;
1299  encode = 0;
1300  }
1301  if (name && strcmp(ifmt->name, name) == 0)
1302  decode = 1;
1303  }
1304  }
1305  if (!name)
1306  break;
1307  last_name = name;
1308 
1309  printf(" %s%s %-15s %s\n",
1310  decode ? "D" : " ",
1311  encode ? "E" : " ",
1312  name,
1313  long_name ? long_name:" ");
1314  }
1315  return 0;
1316 }
1317 
1318 int show_formats(void *optctx, const char *opt, const char *arg)
1319 {
1320  return show_formats_devices(optctx, opt, arg, 0, SHOW_DEFAULT);
1321 }
1322 
1323 int show_muxers(void *optctx, const char *opt, const char *arg)
1324 {
1325  return show_formats_devices(optctx, opt, arg, 0, SHOW_MUXERS);
1326 }
1327 
1328 int show_demuxers(void *optctx, const char *opt, const char *arg)
1329 {
1330  return show_formats_devices(optctx, opt, arg, 0, SHOW_DEMUXERS);
1331 }
1332 
1333 int show_devices(void *optctx, const char *opt, const char *arg)
1334 {
1335  return show_formats_devices(optctx, opt, arg, 1, SHOW_DEFAULT);
1336 }
1337 
1338 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
1339  if (codec->field) { \
1340  const type *p = codec->field; \
1341  \
1342  printf(" Supported " list_name ":"); \
1343  while (*p != term) { \
1344  get_name(*p); \
1345  printf(" %s", name); \
1346  p++; \
1347  } \
1348  printf("\n"); \
1349  } \
1350 
1351 static void print_codec(const AVCodec *c)
1352 {
1353  int encoder = av_codec_is_encoder(c);
1354 
1355  printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
1356  c->long_name ? c->long_name : "");
1357 
1358  printf(" General capabilities: ");
1360  printf("horizband ");
1361  if (c->capabilities & AV_CODEC_CAP_DR1)
1362  printf("dr1 ");
1364  printf("trunc ");
1366  printf("delay ");
1368  printf("small ");
1370  printf("subframes ");
1372  printf("exp ");
1374  printf("chconf ");
1376  printf("paramchange ");
1378  printf("variable ");
1382  printf("threads ");
1383  if (!c->capabilities)
1384  printf("none");
1385  printf("\n");
1386 
1387  if (c->type == AVMEDIA_TYPE_VIDEO ||
1388  c->type == AVMEDIA_TYPE_AUDIO) {
1389  printf(" Threading capabilities: ");
1394  AV_CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
1395  case AV_CODEC_CAP_FRAME_THREADS: printf("frame"); break;
1396  case AV_CODEC_CAP_SLICE_THREADS: printf("slice"); break;
1397  case AV_CODEC_CAP_AUTO_THREADS : printf("auto"); break;
1398  default: printf("none"); break;
1399  }
1400  printf("\n");
1401  }
1402 
1403  if (c->supported_framerates) {
1404  const AVRational *fps = c->supported_framerates;
1405 
1406  printf(" Supported framerates:");
1407  while (fps->num) {
1408  printf(" %d/%d", fps->num, fps->den);
1409  fps++;
1410  }
1411  printf("\n");
1412  }
1413  PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
1415  PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
1417  PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
1419  PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
1420  0, GET_CH_LAYOUT_DESC);
1421 
1422  if (c->priv_class) {
1426  }
1427 }
1428 
1430 {
1431  switch (type) {
1432  case AVMEDIA_TYPE_VIDEO: return 'V';
1433  case AVMEDIA_TYPE_AUDIO: return 'A';
1434  case AVMEDIA_TYPE_DATA: return 'D';
1435  case AVMEDIA_TYPE_SUBTITLE: return 'S';
1436  case AVMEDIA_TYPE_ATTACHMENT:return 'T';
1437  default: return '?';
1438  }
1439 }
1440 
1441 static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
1442  int encoder)
1443 {
1444  while ((prev = av_codec_next(prev))) {
1445  if (prev->id == id &&
1446  (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
1447  return prev;
1448  }
1449  return NULL;
1450 }
1451 
1452 static int compare_codec_desc(const void *a, const void *b)
1453 {
1454  const AVCodecDescriptor * const *da = a;
1455  const AVCodecDescriptor * const *db = b;
1456 
1457  return (*da)->type != (*db)->type ? FFDIFFSIGN((*da)->type, (*db)->type) :
1458  strcmp((*da)->name, (*db)->name);
1459 }
1460 
1461 static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
1462 {
1463  const AVCodecDescriptor *desc = NULL;
1464  const AVCodecDescriptor **codecs;
1465  unsigned nb_codecs = 0, i = 0;
1466 
1467  while ((desc = avcodec_descriptor_next(desc)))
1468  nb_codecs++;
1469  if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
1470  av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
1471  exit_program(1);
1472  }
1473  desc = NULL;
1474  while ((desc = avcodec_descriptor_next(desc)))
1475  codecs[i++] = desc;
1476  av_assert0(i == nb_codecs);
1477  qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
1478  *rcodecs = codecs;
1479  return nb_codecs;
1480 }
1481 
1482 static void print_codecs_for_id(enum AVCodecID id, int encoder)
1483 {
1484  const AVCodec *codec = NULL;
1485 
1486  printf(" (%s: ", encoder ? "encoders" : "decoders");
1487 
1488  while ((codec = next_codec_for_id(id, codec, encoder)))
1489  printf("%s ", codec->name);
1490 
1491  printf(")");
1492 }
1493 
1494 int show_codecs(void *optctx, const char *opt, const char *arg)
1495 {
1496  const AVCodecDescriptor **codecs;
1497  unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1498 
1499  printf("Codecs:\n"
1500  " D..... = Decoding supported\n"
1501  " .E.... = Encoding supported\n"
1502  " ..V... = Video codec\n"
1503  " ..A... = Audio codec\n"
1504  " ..S... = Subtitle codec\n"
1505  " ...I.. = Intra frame-only codec\n"
1506  " ....L. = Lossy compression\n"
1507  " .....S = Lossless compression\n"
1508  " -------\n");
1509  for (i = 0; i < nb_codecs; i++) {
1510  const AVCodecDescriptor *desc = codecs[i];
1511  const AVCodec *codec = NULL;
1512 
1513  if (strstr(desc->name, "_deprecated"))
1514  continue;
1515 
1516  printf(" ");
1517  printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1518  printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1519 
1520  printf("%c", get_media_type_char(desc->type));
1521  printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1522  printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1523  printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1524 
1525  printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1526 
1527  /* print decoders/encoders when there's more than one or their
1528  * names are different from codec name */
1529  while ((codec = next_codec_for_id(desc->id, codec, 0))) {
1530  if (strcmp(codec->name, desc->name)) {
1531  print_codecs_for_id(desc->id, 0);
1532  break;
1533  }
1534  }
1535  codec = NULL;
1536  while ((codec = next_codec_for_id(desc->id, codec, 1))) {
1537  if (strcmp(codec->name, desc->name)) {
1538  print_codecs_for_id(desc->id, 1);
1539  break;
1540  }
1541  }
1542 
1543  printf("\n");
1544  }
1545  av_free(codecs);
1546  return 0;
1547 }
1548 
1549 static void print_codecs(int encoder)
1550 {
1551  const AVCodecDescriptor **codecs;
1552  unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1553 
1554  printf("%s:\n"
1555  " V..... = Video\n"
1556  " A..... = Audio\n"
1557  " S..... = Subtitle\n"
1558  " .F.... = Frame-level multithreading\n"
1559  " ..S... = Slice-level multithreading\n"
1560  " ...X.. = Codec is experimental\n"
1561  " ....B. = Supports draw_horiz_band\n"
1562  " .....D = Supports direct rendering method 1\n"
1563  " ------\n",
1564  encoder ? "Encoders" : "Decoders");
1565  for (i = 0; i < nb_codecs; i++) {
1566  const AVCodecDescriptor *desc = codecs[i];
1567  const AVCodec *codec = NULL;
1568 
1569  while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1570  printf(" %c", get_media_type_char(desc->type));
1571  printf((codec->capabilities & AV_CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1572  printf((codec->capabilities & AV_CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1573  printf((codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1574  printf((codec->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
1575  printf((codec->capabilities & AV_CODEC_CAP_DR1) ? "D" : ".");
1576 
1577  printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1578  if (strcmp(codec->name, desc->name))
1579  printf(" (codec %s)", desc->name);
1580 
1581  printf("\n");
1582  }
1583  }
1584  av_free(codecs);
1585 }
1586 
1587 int show_decoders(void *optctx, const char *opt, const char *arg)
1588 {
1589  print_codecs(0);
1590  return 0;
1591 }
1592 
1593 int show_encoders(void *optctx, const char *opt, const char *arg)
1594 {
1595  print_codecs(1);
1596  return 0;
1597 }
1598 
1599 int show_bsfs(void *optctx, const char *opt, const char *arg)
1600 {
1601  const AVBitStreamFilter *bsf = NULL;
1602  void *opaque = NULL;
1603 
1604  printf("Bitstream filters:\n");
1605  while ((bsf = av_bsf_next(&opaque)))
1606  printf("%s\n", bsf->name);
1607  printf("\n");
1608  return 0;
1609 }
1610 
1611 int show_protocols(void *optctx, const char *opt, const char *arg)
1612 {
1613  void *opaque = NULL;
1614  const char *name;
1615 
1616  printf("Supported file protocols:\n"
1617  "Input:\n");
1618  while ((name = avio_enum_protocols(&opaque, 0)))
1619  printf(" %s\n", name);
1620  printf("Output:\n");
1621  while ((name = avio_enum_protocols(&opaque, 1)))
1622  printf(" %s\n", name);
1623  return 0;
1624 }
1625 
1626 int show_filters(void *optctx, const char *opt, const char *arg)
1627 {
1628 #if CONFIG_AVFILTER
1629  const AVFilter *filter = NULL;
1630  char descr[64], *descr_cur;
1631  int i, j;
1632  const AVFilterPad *pad;
1633 
1634  printf("Filters:\n"
1635  " T.. = Timeline support\n"
1636  " .S. = Slice threading\n"
1637  " ..C = Command support\n"
1638  " A = Audio input/output\n"
1639  " V = Video input/output\n"
1640  " N = Dynamic number and/or type of input/output\n"
1641  " | = Source or sink filter\n");
1642  while ((filter = avfilter_next(filter))) {
1643  descr_cur = descr;
1644  for (i = 0; i < 2; i++) {
1645  if (i) {
1646  *(descr_cur++) = '-';
1647  *(descr_cur++) = '>';
1648  }
1649  pad = i ? filter->outputs : filter->inputs;
1650  for (j = 0; pad && avfilter_pad_get_name(pad, j); j++) {
1651  if (descr_cur >= descr + sizeof(descr) - 4)
1652  break;
1653  *(descr_cur++) = get_media_type_char(avfilter_pad_get_type(pad, j));
1654  }
1655  if (!j)
1656  *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
1657  ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
1658  }
1659  *descr_cur = 0;
1660  printf(" %c%c%c %-17s %-10s %s\n",
1661  filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
1662  filter->flags & AVFILTER_FLAG_SLICE_THREADS ? 'S' : '.',
1663  filter->process_command ? 'C' : '.',
1664  filter->name, descr, filter->description);
1665  }
1666 #else
1667  printf("No filters available: libavfilter disabled\n");
1668 #endif
1669  return 0;
1670 }
1671 
1672 int show_colors(void *optctx, const char *opt, const char *arg)
1673 {
1674  const char *name;
1675  const uint8_t *rgb;
1676  int i;
1677 
1678  printf("%-32s #RRGGBB\n", "name");
1679 
1680  for (i = 0; name = av_get_known_color_name(i, &rgb); i++)
1681  printf("%-32s #%02x%02x%02x\n", name, rgb[0], rgb[1], rgb[2]);
1682 
1683  return 0;
1684 }
1685 
1686 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1687 {
1688  const AVPixFmtDescriptor *pix_desc = NULL;
1689 
1690  printf("Pixel formats:\n"
1691  "I.... = Supported Input format for conversion\n"
1692  ".O... = Supported Output format for conversion\n"
1693  "..H.. = Hardware accelerated format\n"
1694  "...P. = Paletted format\n"
1695  "....B = Bitstream format\n"
1696  "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1697  "-----\n");
1698 
1699 #if !CONFIG_SWSCALE
1700 # define sws_isSupportedInput(x) 0
1701 # define sws_isSupportedOutput(x) 0
1702 #endif
1703 
1704  while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1705  enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1706  printf("%c%c%c%c%c %-16s %d %2d\n",
1707  sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1708  sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1709  pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL ? 'H' : '.',
1710  pix_desc->flags & AV_PIX_FMT_FLAG_PAL ? 'P' : '.',
1711  pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
1712  pix_desc->name,
1713  pix_desc->nb_components,
1714  av_get_bits_per_pixel(pix_desc));
1715  }
1716  return 0;
1717 }
1718 
1719 int show_layouts(void *optctx, const char *opt, const char *arg)
1720 {
1721  int i = 0;
1722  uint64_t layout, j;
1723  const char *name, *descr;
1724 
1725  printf("Individual channels:\n"
1726  "NAME DESCRIPTION\n");
1727  for (i = 0; i < 63; i++) {
1728  name = av_get_channel_name((uint64_t)1 << i);
1729  if (!name)
1730  continue;
1731  descr = av_get_channel_description((uint64_t)1 << i);
1732  printf("%-14s %s\n", name, descr);
1733  }
1734  printf("\nStandard channel layouts:\n"
1735  "NAME DECOMPOSITION\n");
1736  for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
1737  if (name) {
1738  printf("%-14s ", name);
1739  for (j = 1; j; j <<= 1)
1740  if ((layout & j))
1741  printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
1742  printf("\n");
1743  }
1744  }
1745  return 0;
1746 }
1747 
1748 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1749 {
1750  int i;
1751  char fmt_str[128];
1752  for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1753  printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1754  return 0;
1755 }
1756 
1757 static void show_help_codec(const char *name, int encoder)
1758 {
1759  const AVCodecDescriptor *desc;
1760  const AVCodec *codec;
1761 
1762  if (!name) {
1763  av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1764  return;
1765  }
1766 
1767  codec = encoder ? avcodec_find_encoder_by_name(name) :
1769 
1770  if (codec)
1771  print_codec(codec);
1772  else if ((desc = avcodec_descriptor_get_by_name(name))) {
1773  int printed = 0;
1774 
1775  while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1776  printed = 1;
1777  print_codec(codec);
1778  }
1779 
1780  if (!printed) {
1781  av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
1782  "but no %s for it are available. FFmpeg might need to be "
1783  "recompiled with additional external libraries.\n",
1784  name, encoder ? "encoders" : "decoders");
1785  }
1786  } else {
1787  av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
1788  name);
1789  }
1790 }
1791 
1792 static void show_help_demuxer(const char *name)
1793 {
1794  const AVInputFormat *fmt = av_find_input_format(name);
1795 
1796  if (!fmt) {
1797  av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1798  return;
1799  }
1800 
1801  printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1802 
1803  if (fmt->extensions)
1804  printf(" Common extensions: %s.\n", fmt->extensions);
1805 
1806  if (fmt->priv_class)
1808 }
1809 
1810 static void show_help_muxer(const char *name)
1811 {
1812  const AVCodecDescriptor *desc;
1813  const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1814 
1815  if (!fmt) {
1816  av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1817  return;
1818  }
1819 
1820  printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1821 
1822  if (fmt->extensions)
1823  printf(" Common extensions: %s.\n", fmt->extensions);
1824  if (fmt->mime_type)
1825  printf(" Mime type: %s.\n", fmt->mime_type);
1826  if (fmt->video_codec != AV_CODEC_ID_NONE &&
1827  (desc = avcodec_descriptor_get(fmt->video_codec))) {
1828  printf(" Default video codec: %s.\n", desc->name);
1829  }
1830  if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1831  (desc = avcodec_descriptor_get(fmt->audio_codec))) {
1832  printf(" Default audio codec: %s.\n", desc->name);
1833  }
1834  if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1835  (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
1836  printf(" Default subtitle codec: %s.\n", desc->name);
1837  }
1838 
1839  if (fmt->priv_class)
1841 }
1842 
1843 #if CONFIG_AVFILTER
1844 static void show_help_filter(const char *name)
1845 {
1846 #if CONFIG_AVFILTER
1847  const AVFilter *f = avfilter_get_by_name(name);
1848  int i, count;
1849 
1850  if (!name) {
1851  av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
1852  return;
1853  } else if (!f) {
1854  av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
1855  return;
1856  }
1857 
1858  printf("Filter %s\n", f->name);
1859  if (f->description)
1860  printf(" %s\n", f->description);
1861 
1863  printf(" slice threading supported\n");
1864 
1865  printf(" Inputs:\n");
1866  count = avfilter_pad_count(f->inputs);
1867  for (i = 0; i < count; i++) {
1868  printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
1870  }
1872  printf(" dynamic (depending on the options)\n");
1873  else if (!count)
1874  printf(" none (source filter)\n");
1875 
1876  printf(" Outputs:\n");
1877  count = avfilter_pad_count(f->outputs);
1878  for (i = 0; i < count; i++) {
1879  printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
1881  }
1883  printf(" dynamic (depending on the options)\n");
1884  else if (!count)
1885  printf(" none (sink filter)\n");
1886 
1887  if (f->priv_class)
1891  printf("This filter has support for timeline through the 'enable' option.\n");
1892 #else
1893  av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
1894  "can not to satisfy request\n");
1895 #endif
1896 }
1897 #endif
1898 
1899 int show_help(void *optctx, const char *opt, const char *arg)
1900 {
1901  char *topic, *par;
1903 
1904  topic = av_strdup(arg ? arg : "");
1905  if (!topic)
1906  return AVERROR(ENOMEM);
1907  par = strchr(topic, '=');
1908  if (par)
1909  *par++ = 0;
1910 
1911  if (!*topic) {
1912  show_help_default(topic, par);
1913  } else if (!strcmp(topic, "decoder")) {
1914  show_help_codec(par, 0);
1915  } else if (!strcmp(topic, "encoder")) {
1916  show_help_codec(par, 1);
1917  } else if (!strcmp(topic, "demuxer")) {
1918  show_help_demuxer(par);
1919  } else if (!strcmp(topic, "muxer")) {
1920  show_help_muxer(par);
1921 #if CONFIG_AVFILTER
1922  } else if (!strcmp(topic, "filter")) {
1923  show_help_filter(par);
1924 #endif
1925  } else {
1926  show_help_default(topic, par);
1927  }
1928 
1929  av_freep(&topic);
1930  return 0;
1931 }
1932 
1933 int read_yesno(void)
1934 {
1935  int c = getchar();
1936  int yesno = (av_toupper(c) == 'Y');
1937 
1938  while (c != '\n' && c != EOF)
1939  c = getchar();
1940 
1941  return yesno;
1942 }
1943 
1944 FILE *get_preset_file(char *filename, size_t filename_size,
1945  const char *preset_name, int is_path,
1946  const char *codec_name)
1947 {
1948  FILE *f = NULL;
1949  int i;
1950  const char *base[3] = { getenv("FFMPEG_DATADIR"),
1951  getenv("HOME"),
1952  FFMPEG_DATADIR, };
1953 
1954  if (is_path) {
1955  av_strlcpy(filename, preset_name, filename_size);
1956  f = fopen(filename, "r");
1957  } else {
1958 #ifdef _WIN32
1959  char datadir[MAX_PATH], *ls;
1960  base[2] = NULL;
1961 
1962  if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
1963  {
1964  for (ls = datadir; ls < datadir + strlen(datadir); ls++)
1965  if (*ls == '\\') *ls = '/';
1966 
1967  if (ls = strrchr(datadir, '/'))
1968  {
1969  *ls = 0;
1970  strncat(datadir, "/ffpresets", sizeof(datadir) - 1 - strlen(datadir));
1971  base[2] = datadir;
1972  }
1973  }
1974 #endif
1975  for (i = 0; i < 3 && !f; i++) {
1976  if (!base[i])
1977  continue;
1978  snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
1979  i != 1 ? "" : "/.ffmpeg", preset_name);
1980  f = fopen(filename, "r");
1981  if (!f && codec_name) {
1982  snprintf(filename, filename_size,
1983  "%s%s/%s-%s.ffpreset",
1984  base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
1985  preset_name);
1986  f = fopen(filename, "r");
1987  }
1988  }
1989  }
1990 
1991  return f;
1992 }
1993 
1994 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
1995 {
1996  int ret = avformat_match_stream_specifier(s, st, spec);
1997  if (ret < 0)
1998  av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
1999  return ret;
2000 }
2001 
2003  AVFormatContext *s, AVStream *st, AVCodec *codec)
2004 {
2005  AVDictionary *ret = NULL;
2006  AVDictionaryEntry *t = NULL;
2009  char prefix = 0;
2010  const AVClass *cc = avcodec_get_class();
2011 
2012  if (!codec)
2013  codec = s->oformat ? avcodec_find_encoder(codec_id)
2014  : avcodec_find_decoder(codec_id);
2015 
2016  switch (st->codecpar->codec_type) {
2017  case AVMEDIA_TYPE_VIDEO:
2018  prefix = 'v';
2019  flags |= AV_OPT_FLAG_VIDEO_PARAM;
2020  break;
2021  case AVMEDIA_TYPE_AUDIO:
2022  prefix = 'a';
2023  flags |= AV_OPT_FLAG_AUDIO_PARAM;
2024  break;
2025  case AVMEDIA_TYPE_SUBTITLE:
2026  prefix = 's';
2027  flags |= AV_OPT_FLAG_SUBTITLE_PARAM;
2028  break;
2029  }
2030 
2031  while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
2032  char *p = strchr(t->key, ':');
2033 
2034  /* check stream specification in opt name */
2035  if (p)
2036  switch (check_stream_specifier(s, st, p + 1)) {
2037  case 1: *p = 0; break;
2038  case 0: continue;
2039  default: exit_program(1);
2040  }
2041 
2042  if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
2043  !codec ||
2044  (codec->priv_class &&
2045  av_opt_find(&codec->priv_class, t->key, NULL, flags,
2047  av_dict_set(&ret, t->key, t->value, 0);
2048  else if (t->key[0] == prefix &&
2049  av_opt_find(&cc, t->key + 1, NULL, flags,
2051  av_dict_set(&ret, t->key + 1, t->value, 0);
2052 
2053  if (p)
2054  *p = ':';
2055  }
2056  return ret;
2057 }
2058 
2060  AVDictionary *codec_opts)
2061 {
2062  int i;
2063  AVDictionary **opts;
2064 
2065  if (!s->nb_streams)
2066  return NULL;
2067  opts = av_mallocz_array(s->nb_streams, sizeof(*opts));
2068  if (!opts) {
2070  "Could not alloc memory for stream options.\n");
2071  return NULL;
2072  }
2073  for (i = 0; i < s->nb_streams; i++)
2074  opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codecpar->codec_id,
2075  s, s->streams[i], NULL);
2076  return opts;
2077 }
2078 
2079 void *grow_array(void *array, int elem_size, int *size, int new_size)
2080 {
2081  if (new_size >= INT_MAX / elem_size) {
2082  av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
2083  exit_program(1);
2084  }
2085  if (*size < new_size) {
2086  uint8_t *tmp = av_realloc_array(array, new_size, elem_size);
2087  if (!tmp) {
2088  av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
2089  exit_program(1);
2090  }
2091  memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
2092  *size = new_size;
2093  return tmp;
2094  }
2095  return array;
2096 }
2097 
2099 {
2100  AVDictionaryEntry *rotate_tag = av_dict_get(st->metadata, "rotate", NULL, 0);
2101  uint8_t* displaymatrix = av_stream_get_side_data(st,
2103  double theta = 0;
2104 
2105  if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
2106  char *tail;
2107  theta = av_strtod(rotate_tag->value, &tail);
2108  if (*tail)
2109  theta = 0;
2110  }
2111  if (displaymatrix && !theta)
2112  theta = -av_display_rotation_get((int32_t*) displaymatrix);
2113 
2114  theta -= 360*floor(theta/360 + 0.9/360);
2115 
2116  if (fabs(theta - 90*round(theta/90)) > 2)
2117  av_log(NULL, AV_LOG_WARNING, "Odd rotation angle.\n"
2118  "If you want to help, upload a sample "
2119  "of this file to ftp://upload.ffmpeg.org/incoming/ "
2120  "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)");
2121 
2122  return theta;
2123 }
2124 
2125 #if CONFIG_AVDEVICE
2126 static int print_device_sources(AVInputFormat *fmt, AVDictionary *opts)
2127 {
2128  int ret, i;
2129  AVDeviceInfoList *device_list = NULL;
2130 
2131  if (!fmt || !fmt->priv_class || !AV_IS_INPUT_DEVICE(fmt->priv_class->category))
2132  return AVERROR(EINVAL);
2133 
2134  printf("Auto-detected sources for %s:\n", fmt->name);
2135  if (!fmt->get_device_list) {
2136  ret = AVERROR(ENOSYS);
2137  printf("Cannot list sources. Not implemented.\n");
2138  goto fail;
2139  }
2140 
2141  if ((ret = avdevice_list_input_sources(fmt, NULL, opts, &device_list)) < 0) {
2142  printf("Cannot list sources.\n");
2143  goto fail;
2144  }
2145 
2146  for (i = 0; i < device_list->nb_devices; i++) {
2147  printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2148  device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2149  }
2150 
2151  fail:
2152  avdevice_free_list_devices(&device_list);
2153  return ret;
2154 }
2155 
2156 static int print_device_sinks(AVOutputFormat *fmt, AVDictionary *opts)
2157 {
2158  int ret, i;
2159  AVDeviceInfoList *device_list = NULL;
2160 
2161  if (!fmt || !fmt->priv_class || !AV_IS_OUTPUT_DEVICE(fmt->priv_class->category))
2162  return AVERROR(EINVAL);
2163 
2164  printf("Auto-detected sinks for %s:\n", fmt->name);
2165  if (!fmt->get_device_list) {
2166  ret = AVERROR(ENOSYS);
2167  printf("Cannot list sinks. Not implemented.\n");
2168  goto fail;
2169  }
2170 
2171  if ((ret = avdevice_list_output_sinks(fmt, NULL, opts, &device_list)) < 0) {
2172  printf("Cannot list sinks.\n");
2173  goto fail;
2174  }
2175 
2176  for (i = 0; i < device_list->nb_devices; i++) {
2177  printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2178  device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2179  }
2180 
2181  fail:
2182  avdevice_free_list_devices(&device_list);
2183  return ret;
2184 }
2185 
2186 static int show_sinks_sources_parse_arg(const char *arg, char **dev, AVDictionary **opts)
2187 {
2188  int ret;
2189  if (arg) {
2190  char *opts_str = NULL;
2191  av_assert0(dev && opts);
2192  *dev = av_strdup(arg);
2193  if (!*dev)
2194  return AVERROR(ENOMEM);
2195  if ((opts_str = strchr(*dev, ','))) {
2196  *(opts_str++) = '\0';
2197  if (opts_str[0] && ((ret = av_dict_parse_string(opts, opts_str, "=", ":", 0)) < 0)) {
2198  av_freep(dev);
2199  return ret;
2200  }
2201  }
2202  } else
2203  printf("\nDevice name is not provided.\n"
2204  "You can pass devicename[,opt1=val1[,opt2=val2...]] as an argument.\n\n");
2205  return 0;
2206 }
2207 
2208 int show_sources(void *optctx, const char *opt, const char *arg)
2209 {
2210  AVInputFormat *fmt = NULL;
2211  char *dev = NULL;
2212  AVDictionary *opts = NULL;
2213  int ret = 0;
2214  int error_level = av_log_get_level();
2215 
2217 
2218  if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2219  goto fail;
2220 
2221  do {
2222  fmt = av_input_audio_device_next(fmt);
2223  if (fmt) {
2224  if (!strcmp(fmt->name, "lavfi"))
2225  continue; //it's pointless to probe lavfi
2226  if (dev && !av_match_name(dev, fmt->name))
2227  continue;
2228  print_device_sources(fmt, opts);
2229  }
2230  } while (fmt);
2231  do {
2232  fmt = av_input_video_device_next(fmt);
2233  if (fmt) {
2234  if (dev && !av_match_name(dev, fmt->name))
2235  continue;
2236  print_device_sources(fmt, opts);
2237  }
2238  } while (fmt);
2239  fail:
2240  av_dict_free(&opts);
2241  av_free(dev);
2242  av_log_set_level(error_level);
2243  return ret;
2244 }
2245 
2246 int show_sinks(void *optctx, const char *opt, const char *arg)
2247 {
2248  AVOutputFormat *fmt = NULL;
2249  char *dev = NULL;
2250  AVDictionary *opts = NULL;
2251  int ret = 0;
2252  int error_level = av_log_get_level();
2253 
2255 
2256  if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2257  goto fail;
2258 
2259  do {
2260  fmt = av_output_audio_device_next(fmt);
2261  if (fmt) {
2262  if (dev && !av_match_name(dev, fmt->name))
2263  continue;
2264  print_device_sinks(fmt, opts);
2265  }
2266  } while (fmt);
2267  do {
2268  fmt = av_output_video_device_next(fmt);
2269  if (fmt) {
2270  if (dev && !av_match_name(dev, fmt->name))
2271  continue;
2272  print_device_sinks(fmt, opts);
2273  }
2274  } while (fmt);
2275  fail:
2276  av_dict_free(&opts);
2277  av_free(dev);
2278  av_log_set_level(error_level);
2279  return ret;
2280 }
2281 
2282 #endif
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
void init_dynload(void)
Initialize dynamic library loading.
Definition: cmdutils.c:119
int parse_optgroup(void *optctx, OptionGroup *g)
Parse an options group and write results into optctx.
Definition: cmdutils.c:413
#define NULL
Definition: coverity.c:32
#define AV_CODEC_PROP_INTRA_ONLY
Codec uses only intra compression.
Definition: avcodec.h:694
const char const char void * val
Definition: avisynth_c.h:771
AVDictionary * resample_opts
Definition: cmdutils.h:284
const char * s
Definition: avisynth_c.h:768
enum AVCodecID codec_id
Definition: ffmpeg_vaapi.c:149
AVOutputFormat * av_output_audio_device_next(AVOutputFormat *d)
Audio output devices iterator.
Definition: avdevice.c:115
Number of sample formats. DO NOT USE if linking dynamically.
Definition: samplefmt.h:74
static enum AVPixelFormat pix_fmt
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
AVDictionary * swr_opts
Definition: cmdutils.h:286
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:1587
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: utils.c:3109
const char * name
< group name
Definition: cmdutils.h:262
static void finish_group(OptionParseContext *octx, int group_idx, const char *arg)
Definition: cmdutils.c:661
#define FLAGS
Definition: cmdutils.c:543
void av_max_alloc(size_t max)
Set the maximum size that may be allocated in one block.
Definition: mem.c:73
AVOption.
Definition: opt.h:246
int show_license(void *optctx, const char *opt, const char *arg)
Print the license of the program to stdout.
Definition: cmdutils.c:1178
#define AV_CODEC_PROP_LOSSY
Codec supports lossy compression.
Definition: avcodec.h:700
#define AV_OPT_FLAG_SUBTITLE_PARAM
Definition: opt.h:283
double get_rotation(AVStream *st)
Definition: cmdutils.c:2098
const char * fmt
Definition: avisynth_c.h:769
char * device_description
human friendly name
Definition: avdevice.h:455
int(* func_arg)(void *, const char *, const char *)
Definition: cmdutils.h:190
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:93
Main libavfilter public API header.
const char * g
Definition: vf_curves.c:112
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:559
const char * desc
Definition: nvenc.c:60
void av_log_set_level(int level)
Set the log level.
Definition: log.c:391
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:752
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:2284
const AVClass * av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
Iterate over potential AVOptions-enabled children of parent.
Definition: opt.c:1654
int opt_loglevel(void *optctx, const char *opt, const char *arg)
Set the libav* libraries log level.
Definition: cmdutils.c:870
enum AVCodecID video_codec
default video codec
Definition: avformat.h:535
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the given stream matches a stream specifier.
Definition: cmdutils.c:1994
#define INDENT
Definition: cmdutils.c:1063
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
Definition: avfilter.h:105
enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx)
Get the type of an AVFilterPad.
Definition: avfilter.c:1039
char * device_name
device name, format depends on device
Definition: avdevice.h:454
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3987
int num
Numerator.
Definition: rational.h:59
#define AV_OPT_FLAG_AUDIO_PARAM
Definition: opt.h:281
const char * b
Definition: vf_curves.c:113
void show_banner(int argc, char **argv, const OptionDef *options)
Print the program banner to stderr.
Definition: cmdutils.c:1150
static int is_device(const AVClass *avclass)
Definition: cmdutils.c:1252
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:1611
int show_demuxers(void *optctx, const char *opt, const char *arg)
Print a listing containing all the demuxer supported by the program (including devices).
Definition: cmdutils.c:1328
const char * arg
Definition: cmdutils.h:277
const char * sep
Option to be used as group separator.
Definition: cmdutils.h:267
#define GET_CH_LAYOUT_DESC(ch_layout)
Definition: cmdutils.h:603
static const AVOption * opt_find(void *obj, const char *name, const char *unit, int opt_flags, int search_flags)
Definition: cmdutils.c:534
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: avcodec.h:1014
enum AVMediaType type
Definition: avcodec.h:3620
#define AV_CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
Definition: avcodec.h:1018
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
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:1333
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:1318
const AVClass * sws_get_class(void)
Get the AVClass for swsContext.
Definition: options.c:95
#define AV_CODEC_CAP_AUTO_THREADS
Codec supports avctx->thread_count == 0 (auto).
Definition: avcodec.h:1034
#define OPT_DOUBLE
Definition: cmdutils.h:185
static void check_options(const OptionDef *po)
Definition: cmdutils.c:496
#define OPT_FLOAT
Definition: cmdutils.h:173
AVCodec.
Definition: avcodec.h:3607
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:1686
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:2002
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:260
void uninit_parse_context(OptionParseContext *octx)
Free all allocated memory in an OptionParseContext.
Definition: cmdutils.c:726
int av_codec_is_decoder(const AVCodec *codec)
Definition: utils.c:173
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:2987
Format I/O context.
Definition: avformat.h:1338
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:279
int av_codec_is_encoder(const AVCodec *codec)
Definition: utils.c:168
static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only, int muxdemuxers)
Definition: cmdutils.c:1259
#define AV_LOG_QUIET
Print no output.
Definition: log.h:158
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:984
static int warned_cfg
Definition: cmdutils.c:1061
#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:1494
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:472
void register_exit(void(*cb)(int ret))
Register a program-specific cleanup routine.
Definition: cmdutils.c:130
void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
Trivial log callback.
Definition: cmdutils.c:98
uint8_t
av_cold struct SwrContext * swr_alloc(void)
Allocate SwrContext.
Definition: options.c:149
Opaque data information usually continuous.
Definition: avutil.h:203
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:544
#define OPT_OUTPUT
Definition: cmdutils.h:187
void avdevice_free_list_devices(AVDeviceInfoList **device_list)
Convenient function to free result of avdevice_list_devices().
Definition: avdevice.c:250
AVOptions.
#define HAS_ARG
Definition: cmdutils.h:166
#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:31
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
static const OptionGroupDef groups[]
Definition: ffmpeg_opt.c:3197
static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
Definition: cmdutils.c:1461
AVS_FilterInfo AVS_Value child
Definition: avisynth_c.h:731
#define AV_CODEC_PROP_LOSSLESS
Codec supports lossless compression.
Definition: avcodec.h:704
int opt_max_alloc(void *optctx, const char *opt, const char *arg)
Definition: cmdutils.c:1024
#define media_type_string
Definition: cmdutils.h:584
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: avcodec.h:1425
int nb_opts
Definition: cmdutils.h:280
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:4801
#define OPT_OFFSET
Definition: cmdutils.h:180
static void init_parse_context(OptionParseContext *octx, const OptionGroupDef *groups, int nb_groups)
Definition: cmdutils.c:704
#define AV_IS_INPUT_DEVICE(category)
Definition: log.h:50
int show_muxers(void *optctx, const char *opt, const char *arg)
Print a listing containing all the muxers supported by the program (including devices).
Definition: cmdutils.c:1323
int show_buildconf(void *optctx, const char *opt, const char *arg)
Print the build configuration of the program to stdout.
Definition: cmdutils.c:1170
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
Definition: utils.c:5098
void init_opts(void)
Initialize the cmdutils option system, in particular allocate the *_opts contexts.
Definition: cmdutils.c:84
int hide_banner
Definition: cmdutils.c:76
static void filter(int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, int16_t *high, ptrdiff_t high_stride, int len, uint8_t clip)
Definition: cfhd.c:80
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1406
int flags
A combination of AVFILTER_FLAG_*.
Definition: avfilter.h:187
AVOutputFormat * av_output_video_device_next(AVOutputFormat *d)
Video output devices iterator.
Definition: avdevice.c:121
const char * name
Definition: avcodec.h:5785
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:689
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
void parse_options(void *optctx, int argc, char **argv, const OptionDef *options, void(*parse_arg_function)(void *, const char *))
Definition: cmdutils.c:382
static int flags
Definition: log.c:57
#define OPT_SPEC
Definition: cmdutils.h:181
const AVFilter * avfilter_next(const AVFilter *prev)
Iterate over all registered filters.
Definition: avfilter.c:549
static void print_all_libs_info(int flags, int level)
Definition: cmdutils.c:1097
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
const AVClass * avformat_get_class(void)
Get the AVClass for AVFormatContext.
Definition: options.c:156
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:505
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
Definition: avfilter.h:111
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:176
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:289
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:208
const OptionDef options[]
Definition: ffserver.c:3950
static void print_codecs(int encoder)
Definition: cmdutils.c:1549
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:446
#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:276
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1357
const char * name
Definition: pixdesc.h:82
AVDictionary ** setup_find_stream_info_opts(AVFormatContext *s, AVDictionary *codec_opts)
Setup AVCodecContext options for avformat_find_stream_info().
Definition: cmdutils.c:2059
AVCodec * avcodec_find_encoder_by_name(const char *name)
Find a registered encoder with the specified name.
Definition: utils.c:3114
AVDictionary * format_opts
Definition: cmdutils.c:72
int show_help(void *optctx, const char *opt, const char *arg)
Generic -h handler common to all fftools.
Definition: cmdutils.c:1899
A filter pad used for either input or output.
Definition: internal.h:53
static void * av_x_if_null(const void *p, const void *x)
Return x default pointer in case p is NULL.
Definition: avutil.h:308
Main libavdevice API header.
int flags
Option flags that must be set on each option that is applied to this group.
Definition: cmdutils.h:272
libswresample public header
enum AVCodecID id
Definition: avcodec.h:3621
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:191
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
const AVBitStreamFilter * av_bsf_next(void **opaque)
Iterate over all registered bitstream filters.
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:293
#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:530
const char * avio_enum_protocols(void **opaque, int output)
Iterate through names of available protocols.
Definition: protocols.c:96
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:1748
#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:148
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:3626
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
#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:203
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3983
const char * arg
Definition: jacosubdec.c:66
#define SHOW_COPYRIGHT
Definition: cmdutils.c:1066
const char * name
Definition: cmdutils.h:164
static void show_help_muxer(const char *name)
Definition: cmdutils.c:1810
int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options)
Parse one given option.
Definition: cmdutils.c:349
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:359
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:140
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:1338
int av_log_get_level(void)
Get the current log level.
Definition: log.c:386
const char * name
Name of the codec implementation.
Definition: avcodec.h:3614
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:320
static av_always_inline av_const double round(double x)
Definition: libm.h:444
AVClassCategory category
Category used for visualization (like color) This is only set if the category is equal for all object...
Definition: log.h:130
Libavutil version macros.
int flags
Definition: cmdutils.h:165
const char * long_name
A more descriptive name for this codec.
Definition: avcodec.h:672
const char * val
Definition: cmdutils.h:257
AVDeviceInfo ** devices
list of autodetected devices
Definition: avdevice.h:462
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
GLsizei count
Definition: opengl_enc.c:109
static void error(const char *err)
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:226
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:1626
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:84
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1022
void av_log_default_callback(void *ptr, int level, const char *fmt, va_list vl)
Default logging callback.
Definition: log.c:302
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:183
#define AV_CODEC_CAP_VARIABLE_FRAME_SIZE
Audio encoder supports receiving a different number of samples in each call.
Definition: avcodec.h:1038
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:2977
AVDictionary * sws_dict
Definition: cmdutils.c:70
static const OptionDef * find_option(const OptionDef *po, const char *name)
Definition: cmdutils.c:217
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:429
int opt_report(const char *opt)
Definition: cmdutils.c:1019
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: avcodec.h:676
const AVFilter * avfilter_get_by_name(const char *name)
Get a filter definition matching the given name.
Definition: avfilter.c:519
const int program_birth_year
program birth year, defined by the program for show_banner()
Definition: ffmpeg.c:110
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:1596
#define FFDIFFSIGN(x, y)
Comparator.
Definition: common.h:92
#define AV_IS_OUTPUT_DEVICE(category)
Definition: log.h:55
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1394
int avdevice_list_input_sources(AVInputFormat *device, const char *device_name, AVDictionary *device_options, AVDeviceInfoList **device_list)
List devices.
Definition: avdevice.c:228
AVDictionary * opts
Definition: movenc.c:50
OptionGroup * groups
Definition: cmdutils.h:296
enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc)
Definition: pixdesc.c:2351
AVInputFormat * av_find_input_format(const char *short_name)
Find AVInputFormat based on the short name of the input format.
Definition: format.c:164
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:83
#define AV_CODEC_CAP_DRAW_HORIZ_BAND
Decoder can use draw_horiz_band callback.
Definition: avcodec.h:953
size_t off
Definition: cmdutils.h:191
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:1672
static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
Definition: cmdutils.c:103
#define AV_CODEC_CAP_SMALL_LAST_FRAME
Codec can be fed a final frame with a smaller size.
Definition: avcodec.h:989
external API header
#define FFMIN(a, b)
Definition: common.h:96
void av_log_set_callback(void(*callback)(void *, int, const char *, va_list))
Set the logging callback.
Definition: log.c:406
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
Definition: opt.h:557
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:1599
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
static void print_codecs_for_id(enum AVCodecID id, int encoder)
Definition: cmdutils.c:1482
static int init_report(const char *env)
Definition: cmdutils.c:948
const char * name
Definition: avformat.h:524
#define GET_PIX_FMT_NAME(pix_fmt)
Definition: cmdutils.h:589
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
int avdevice_list_output_sinks(AVOutputFormat *device, const char *device_name, AVDictionary *device_options, AVDeviceInfoList **device_list)
Definition: avdevice.c:239
const OptionGroupDef * group_def
Definition: cmdutils.h:294
A list of option groups that all have the same group type (e.g.
Definition: cmdutils.h:293
#define OPT_EXIT
Definition: cmdutils.h:176
void sws_freeContext(struct SwsContext *swsContext)
Free the swscaler context swsContext.
Definition: utils.c:2278
void show_help_default(const char *opt, const char *arg)
Per-fftool specific help handler.
Definition: ffmpeg_opt.c:3116
AVDictionary * resample_opts
Definition: cmdutils.c:72
#define OPT_INT64
Definition: cmdutils.h:175
AVDictionary * metadata
Definition: avformat.h:958
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:98
#define sws_isSupportedInput(x)
Opaque data information usually sparse.
Definition: avutil.h:205
const AVClass * swr_get_class(void)
Get the AVClass for SwrContext.
Definition: options.c:144
int opt_timelimit(void *optctx, const char *opt, const char *arg)
Limit the execution time.
Definition: cmdutils.c:1038
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:552
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:189
const AVCodecDescriptor * avcodec_descriptor_get_by_name(const char *name)
Definition: codec_desc.c:2996
#define GET_SAMPLE_FMT_NAME(sample_fmt)
Definition: cmdutils.h:592
#define FF_ARRAY_ELEMS(a)
int flags
Definition: opt.h:275
int(* get_device_list)(struct AVFormatContext *s, struct AVDeviceInfoList *device_list)
Returns device list with it properties.
Definition: avformat.h:613
void exit_program(int ret)
Wraps exit with a program-specific cleanup routine.
Definition: cmdutils.c:135
const AVFilterPad * inputs
List of inputs, terminated by a zeroed element.
Definition: avfilter.h:164
const char * long_name
Descriptive name for the format, meant to be more human-readable than name.
Definition: avformat.h:671
#define INFINITY
Definition: math.h:27
Stream structure.
Definition: avformat.h:889
static char get_media_type_char(enum AVMediaType type)
Definition: cmdutils.c:1429
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1026
double av_strtod(const char *numstr, char **tail)
Parse the string in numstr and return its value as a double.
Definition: eval.c:98
int av_dict_parse_string(AVDictionary **pm, const char *str, const char *key_val_sep, const char *pairs_sep, int flags)
Parse the key/value pairs list and add the parsed entries to a dictionary.
Definition: dict.c:180
#define GET_SAMPLE_RATE_NAME(rate)
Definition: cmdutils.h:595
external API header
const char * long_name
Descriptive name for the codec, meant to be more human readable than name.
Definition: avcodec.h:3619
const AVClass * priv_class
A class for the private data, used to declare filter private AVOptions.
Definition: avfilter.h:182
#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:1441
AVInputFormat * av_input_video_device_next(AVInputFormat *d)
Video input devices iterator.
Definition: avdevice.c:109
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:267
const AVRational * supported_framerates
array of supported framerates, or NULL if any, array is terminated by {0,0}
Definition: avcodec.h:3627
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
Show the obj options.
Definition: opt.c:1281
const char * help
Definition: cmdutils.h:193
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
#define AV_OPT_FLAG_VIDEO_PARAM
Definition: opt.h:282
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
Definition: utils.c:3128
show_muxdemuxers
Definition: cmdutils.c:78
int av_log_get_flags(void)
Definition: log.c:401
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:690
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:70
Replacements for frequently missing libm functions.
#define SHOW_VERSION
Definition: cmdutils.c:1064
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:1944
const OptionGroupDef * group_def
Definition: cmdutils.h:276
static const uint16_t channel_layouts[7]
Definition: dca_lbr.c:118
#define PRINT_LIB_INFO(libname, LIBNAME, flags, level)
Definition: cmdutils.c:1068
Describe the class of an AVClass context structure.
Definition: log.h:67
AVInputFormat * av_input_audio_device_next(AVInputFormat *d)
Audio input devices iterator.
Definition: avdevice.c:103
Filter definition.
Definition: avfilter.h:144
static av_const int av_toupper(int c)
Locale-independent conversion of ASCII characters to uppercase.
Definition: avstring.h:231
#define AV_CODEC_CAP_SUBFRAMES
Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time...
Definition: avcodec.h:1009
enum AVCodecID subtitle_codec
default subtitle codec
Definition: avformat.h:536
Rational number (pair of numerator and denominator).
Definition: rational.h:58
static void expand_filename_template(AVBPrint *bp, const char *template, struct tm *tm)
Definition: cmdutils.c:920
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:277
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:164
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:2079
const char * argname
Definition: cmdutils.h:194
#define OPT_STRING
Definition: cmdutils.h:169
AVMediaType
Definition: avutil.h:199
const char * name
Filter name.
Definition: avfilter.h:148
const char * name
Name of the codec described by this descriptor.
Definition: avcodec.h:668
#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:1034
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:88
static void print_codec(const AVCodec *c)
Definition: cmdutils.c:1351
misc parsing utilities
int default_device
index of default device or -1 if no default
Definition: avdevice.h:464
#define AV_PIX_FMT_FLAG_BITSTREAM
All values of a component are bit-wise packed end to end.
Definition: pixdesc.h:136
struct SwsContext * sws_alloc_context(void)
Allocate an empty SwsContext.
Definition: utils.c:1065
List of devices.
Definition: avdevice.h:461
size_t av_strlcat(char *dst, const char *src, size_t size)
Append the string src to the string dst, but to a total length of no more than size - 1 bytes...
Definition: avstring.c:93
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
This struct describes the properties of a single codec described by an AVCodecID. ...
Definition: avcodec.h:660
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:143
#define AV_CODEC_CAP_TRUNCATED
Definition: avcodec.h:960
#define OPT_TIME
Definition: cmdutils.h:184
AVCodec * avcodec_find_decoder_by_name(const char *name)
Find a registered decoder with the specified name.
Definition: utils.c:3133
const AVClass * priv_class
AVClass for the private context.
Definition: avcodec.h:3633
uint8_t level
Definition: svq3.c:207
static int match_group_separator(const OptionGroupDef *groups, int nb_groups, const char *opt)
Definition: cmdutils.c:641
static int swscale(SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
Definition: swscale.c:231
int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
Put a description of the AVERROR code errnum in errbuf.
Definition: error.c:105
enum AVMediaType type
Definition: avcodec.h:662
const char * extensions
If extensions are defined, then no probe is done.
Definition: avformat.h:685
#define OPT_BOOL
Definition: cmdutils.h:167
An option extracted from the commandline.
Definition: cmdutils.h:254
static FILE * report_file
Definition: cmdutils.c:74
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:1051
#define OPT_INT
Definition: cmdutils.h:172
AVDictionary * codec_opts
Definition: cmdutils.c:72
AVDictionary * format_opts
Definition: cmdutils.h:283
#define class
Definition: math.h:25
OptionGroupList * groups
Definition: cmdutils.h:303
#define AV_CODEC_CAP_PARAM_CHANGE
Codec supports changed parameters at any point.
Definition: avcodec.h:1030
#define AVFILTER_FLAG_SUPPORT_TIMELINE
Handy mask to test whether the filter supports or no the timeline feature (internally or generically)...
Definition: avfilter.h:138
static void(* program_exit)(int ret)
Definition: cmdutils.c:128
OptionGroup global_opts
Definition: cmdutils.h:301
static void print_buildconf(int flags, int level)
Definition: cmdutils.c:1124
#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:566
char * key
Definition: dict.h:86
int den
Denominator.
Definition: rational.h:60
void uninit_opts(void)
Uninitialize the cmdutils option system, in particular free the *_opts contexts and their contents...
Definition: cmdutils.c:89
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:256
#define AVUNERROR(e)
Definition: error.h:44
enum AVCodecID id
Definition: avcodec.h:661
#define GROW_ARRAY(array, nb_elems)
Definition: cmdutils.h:586
const OptionDef * opt
Definition: cmdutils.h:255
#define av_free(p)
const char * description
A description of the filter.
Definition: avfilter.h:155
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:87
static int report_file_level
Definition: cmdutils.c:75
#define SHOW_CONFIG
Definition: cmdutils.c:1065
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:1472
enum AVCodecID audio_codec
default audio codec
Definition: avformat.h:534
static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
Definition: cmdutils.c:288
int(* get_device_list)(struct AVFormatContext *s, struct AVDeviceInfoList *device_list)
Returns device list with it properties.
Definition: avformat.h:790
static uint8_t tmp[8]
Definition: des.c:38
static int write_option(void *optctx, const OptionDef *po, const char *opt, const char *arg)
Definition: cmdutils.c:294
void av_log_set_flags(int arg)
Definition: log.c:396
static AVCodec * c
AVDictionary * swr_opts
Definition: cmdutils.c:71
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:205
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:1719
#define GET_ARG(arg)
OptionGroup cur_group
Definition: cmdutils.h:307
int avfilter_pad_count(const AVFilterPad *pads)
Get the number of elements in a NULL-terminated array of AVFilterPads (e.g.
Definition: avfilter.c:565
int opt_cpuflags(void *optctx, const char *opt, const char *arg)
Override the cpuflags.
Definition: cmdutils.c:858
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:701
AVDictionary * codec_opts
Definition: cmdutils.h:282
Option * opts
Definition: cmdutils.h:279
int read_yesno(void)
Return a positive value if a line read from standard input starts with [yY], otherwise return 0...
Definition: cmdutils.c:1933
const AVFilterPad * outputs
List of outputs, terminated by a zeroed element.
Definition: avfilter.h:172
union OptionDef::@1 u
#define av_freep(p)
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:664
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
Definition: ffmpeg.c:2045
#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:70
static void show_help_demuxer(const char *name)
Definition: cmdutils.c:1792
const char * av_get_channel_description(uint64_t channel)
Get the description of a given channel.
static int array[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:106
#define AV_LOG_FATAL
Something went wrong and recovery is not possible.
Definition: log.h:170
AVCodecParameters * codecpar
Definition: avformat.h:1241
int show_version(void *optctx, const char *opt, const char *arg)
Print the version of the program to stdout.
Definition: cmdutils.c:1161
void av_force_cpu_flags(int arg)
Disables cpu detection and forces the specified flags.
Definition: cpu.c:62
#define OPT_PERFILE
Definition: cmdutils.h:178
AVDictionary * sws_dict
Definition: cmdutils.h:285
#define OPT_INPUT
Definition: cmdutils.h:186
const char * extensions
comma-separated filename extensions
Definition: avformat.h:532
const char * mime_type
Definition: avformat.h:531
int nb_devices
number of autodetected devices
Definition: avdevice.h:463
float min
static void print_program_info(int flags, int level)
Definition: cmdutils.c:1110
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:451
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:959
const char program_name[]
program name, defined by the program for show_version().
Definition: ffmpeg.c:109
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:1757
static int compare_codec_desc(const void *a, const void *b)
Definition: cmdutils.c:1452
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:1593
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:2339
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:692
void av_bprint_chars(AVBPrint *buf, char c, unsigned n)
Append char c n times to a print buffer.
Definition: bprint.c:140