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cmdutils.c
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1 /*
2  * Various utilities for command line tools
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <string.h>
23 #include <stdint.h>
24 #include <stdlib.h>
25 #include <errno.h>
26 #include <math.h>
27 
28 /* Include only the enabled headers since some compilers (namely, Sun
29  Studio) will not omit unused inline functions and create undefined
30  references to libraries that are not being built. */
31 
32 #include "config.h"
33 #include "compat/va_copy.h"
34 #include "libavformat/avformat.h"
35 #include "libavfilter/avfilter.h"
36 #include "libavdevice/avdevice.h"
38 #include "libswscale/swscale.h"
41 #include "libavutil/avassert.h"
42 #include "libavutil/avstring.h"
43 #include "libavutil/bprint.h"
44 #include "libavutil/display.h"
45 #include "libavutil/mathematics.h"
46 #include "libavutil/imgutils.h"
47 #include "libavutil/libm.h"
48 #include "libavutil/parseutils.h"
49 #include "libavutil/pixdesc.h"
50 #include "libavutil/eval.h"
51 #include "libavutil/dict.h"
52 #include "libavutil/opt.h"
53 #include "libavutil/cpu.h"
54 #include "libavutil/ffversion.h"
55 #include "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 
65 static int init_report(const char *env);
66 
70 
71 static FILE *report_file;
73 int hide_banner = 0;
74 
75 void init_opts(void)
76 {
77  av_dict_set(&sws_dict, "flags", "bicubic", 0);
78 }
79 
80 void uninit_opts(void)
81 {
82  av_dict_free(&swr_opts);
83  av_dict_free(&sws_dict);
84  av_dict_free(&format_opts);
85  av_dict_free(&codec_opts);
86  av_dict_free(&resample_opts);
87 }
88 
89 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
90 {
91  vfprintf(stdout, fmt, vl);
92 }
93 
94 static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
95 {
96  va_list vl2;
97  char line[1024];
98  static int print_prefix = 1;
99 
100  va_copy(vl2, vl);
101  av_log_default_callback(ptr, level, fmt, vl);
102  av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
103  va_end(vl2);
104  if (report_file_level >= level) {
105  fputs(line, report_file);
106  fflush(report_file);
107  }
108 }
109 
110 void init_dynload(void)
111 {
112 #ifdef _WIN32
113  /* Calling SetDllDirectory with the empty string (but not NULL) removes the
114  * current working directory from the DLL search path as a security pre-caution. */
115  SetDllDirectory("");
116 #endif
117 }
118 
119 static void (*program_exit)(int ret);
120 
121 void register_exit(void (*cb)(int ret))
122 {
123  program_exit = cb;
124 }
125 
126 void exit_program(int ret)
127 {
128  if (program_exit)
129  program_exit(ret);
130 
131  exit(ret);
132 }
133 
134 double parse_number_or_die(const char *context, const char *numstr, int type,
135  double min, double max)
136 {
137  char *tail;
138  const char *error;
139  double d = av_strtod(numstr, &tail);
140  if (*tail)
141  error = "Expected number for %s but found: %s\n";
142  else if (d < min || d > max)
143  error = "The value for %s was %s which is not within %f - %f\n";
144  else if (type == OPT_INT64 && (int64_t)d != d)
145  error = "Expected int64 for %s but found %s\n";
146  else if (type == OPT_INT && (int)d != d)
147  error = "Expected int for %s but found %s\n";
148  else
149  return d;
150  av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
151  exit_program(1);
152  return 0;
153 }
154 
155 int64_t parse_time_or_die(const char *context, const char *timestr,
156  int is_duration)
157 {
158  int64_t us;
159  if (av_parse_time(&us, timestr, is_duration) < 0) {
160  av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
161  is_duration ? "duration" : "date", context, timestr);
162  exit_program(1);
163  }
164  return us;
165 }
166 
167 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
168  int rej_flags, int alt_flags)
169 {
170  const OptionDef *po;
171  int first;
172 
173  first = 1;
174  for (po = options; po->name; po++) {
175  char buf[64];
176 
177  if (((po->flags & req_flags) != req_flags) ||
178  (alt_flags && !(po->flags & alt_flags)) ||
179  (po->flags & rej_flags))
180  continue;
181 
182  if (first) {
183  printf("%s\n", msg);
184  first = 0;
185  }
186  av_strlcpy(buf, po->name, sizeof(buf));
187  if (po->argname) {
188  av_strlcat(buf, " ", sizeof(buf));
189  av_strlcat(buf, po->argname, sizeof(buf));
190  }
191  printf("-%-17s %s\n", buf, po->help);
192  }
193  printf("\n");
194 }
195 
196 void show_help_children(const AVClass *class, int flags)
197 {
198  const AVClass *child = NULL;
199  if (class->option) {
200  av_opt_show2(&class, NULL, flags, 0);
201  printf("\n");
202  }
203 
204  while (child = av_opt_child_class_next(class, child))
205  show_help_children(child, flags);
206 }
207 
208 static const OptionDef *find_option(const OptionDef *po, const char *name)
209 {
210  const char *p = strchr(name, ':');
211  int len = p ? p - name : strlen(name);
212 
213  while (po->name) {
214  if (!strncmp(name, po->name, len) && strlen(po->name) == len)
215  break;
216  po++;
217  }
218  return po;
219 }
220 
221 /* _WIN32 means using the windows libc - cygwin doesn't define that
222  * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
223  * it doesn't provide the actual command line via GetCommandLineW(). */
224 #if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
225 #include <windows.h>
226 #include <shellapi.h>
227 /* Will be leaked on exit */
228 static char** win32_argv_utf8 = NULL;
229 static int win32_argc = 0;
230 
231 /**
232  * Prepare command line arguments for executable.
233  * For Windows - perform wide-char to UTF-8 conversion.
234  * Input arguments should be main() function arguments.
235  * @param argc_ptr Arguments number (including executable)
236  * @param argv_ptr Arguments list.
237  */
238 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
239 {
240  char *argstr_flat;
241  wchar_t **argv_w;
242  int i, buffsize = 0, offset = 0;
243 
244  if (win32_argv_utf8) {
245  *argc_ptr = win32_argc;
246  *argv_ptr = win32_argv_utf8;
247  return;
248  }
249 
250  win32_argc = 0;
251  argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
252  if (win32_argc <= 0 || !argv_w)
253  return;
254 
255  /* determine the UTF-8 buffer size (including NULL-termination symbols) */
256  for (i = 0; i < win32_argc; i++)
257  buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
258  NULL, 0, NULL, NULL);
259 
260  win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
261  argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
262  if (!win32_argv_utf8) {
263  LocalFree(argv_w);
264  return;
265  }
266 
267  for (i = 0; i < win32_argc; i++) {
268  win32_argv_utf8[i] = &argstr_flat[offset];
269  offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
270  &argstr_flat[offset],
271  buffsize - offset, NULL, NULL);
272  }
273  win32_argv_utf8[i] = NULL;
274  LocalFree(argv_w);
275 
276  *argc_ptr = win32_argc;
277  *argv_ptr = win32_argv_utf8;
278 }
279 #else
280 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
281 {
282  /* nothing to do */
283 }
284 #endif /* HAVE_COMMANDLINETOARGVW */
285 
286 static int write_option(void *optctx, const OptionDef *po, const char *opt,
287  const char *arg)
288 {
289  /* new-style options contain an offset into optctx, old-style address of
290  * a global var*/
291  void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
292  (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
293  int *dstcount;
294 
295  if (po->flags & OPT_SPEC) {
296  SpecifierOpt **so = dst;
297  char *p = strchr(opt, ':');
298  char *str;
299 
300  dstcount = (int *)(so + 1);
301  *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
302  str = av_strdup(p ? p + 1 : "");
303  if (!str)
304  return AVERROR(ENOMEM);
305  (*so)[*dstcount - 1].specifier = str;
306  dst = &(*so)[*dstcount - 1].u;
307  }
308 
309  if (po->flags & OPT_STRING) {
310  char *str;
311  str = av_strdup(arg);
312  av_freep(dst);
313  if (!str)
314  return AVERROR(ENOMEM);
315  *(char **)dst = str;
316  } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
317  *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
318  } else if (po->flags & OPT_INT64) {
319  *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
320  } else if (po->flags & OPT_TIME) {
321  *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
322  } else if (po->flags & OPT_FLOAT) {
323  *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
324  } else if (po->flags & OPT_DOUBLE) {
325  *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
326  } else if (po->u.func_arg) {
327  int ret = po->u.func_arg(optctx, opt, arg);
328  if (ret < 0) {
330  "Failed to set value '%s' for option '%s': %s\n",
331  arg, opt, av_err2str(ret));
332  return ret;
333  }
334  }
335  if (po->flags & OPT_EXIT)
336  exit_program(0);
337 
338  return 0;
339 }
340 
341 int parse_option(void *optctx, const char *opt, const char *arg,
342  const OptionDef *options)
343 {
344  const OptionDef *po;
345  int ret;
346 
347  po = find_option(options, opt);
348  if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
349  /* handle 'no' bool option */
350  po = find_option(options, opt + 2);
351  if ((po->name && (po->flags & OPT_BOOL)))
352  arg = "0";
353  } else if (po->flags & OPT_BOOL)
354  arg = "1";
355 
356  if (!po->name)
357  po = find_option(options, "default");
358  if (!po->name) {
359  av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
360  return AVERROR(EINVAL);
361  }
362  if (po->flags & HAS_ARG && !arg) {
363  av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
364  return AVERROR(EINVAL);
365  }
366 
367  ret = write_option(optctx, po, opt, arg);
368  if (ret < 0)
369  return ret;
370 
371  return !!(po->flags & HAS_ARG);
372 }
373 
374 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
375  void (*parse_arg_function)(void *, const char*))
376 {
377  const char *opt;
378  int optindex, handleoptions = 1, ret;
379 
380  /* perform system-dependent conversions for arguments list */
381  prepare_app_arguments(&argc, &argv);
382 
383  /* parse options */
384  optindex = 1;
385  while (optindex < argc) {
386  opt = argv[optindex++];
387 
388  if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
389  if (opt[1] == '-' && opt[2] == '\0') {
390  handleoptions = 0;
391  continue;
392  }
393  opt++;
394 
395  if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
396  exit_program(1);
397  optindex += ret;
398  } else {
399  if (parse_arg_function)
400  parse_arg_function(optctx, opt);
401  }
402  }
403 }
404 
405 int parse_optgroup(void *optctx, OptionGroup *g)
406 {
407  int i, ret;
408 
409  av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
410  g->group_def->name, g->arg);
411 
412  for (i = 0; i < g->nb_opts; i++) {
413  Option *o = &g->opts[i];
414 
415  if (g->group_def->flags &&
416  !(g->group_def->flags & o->opt->flags)) {
417  av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
418  "%s %s -- you are trying to apply an input option to an "
419  "output file or vice versa. Move this option before the "
420  "file it belongs to.\n", o->key, o->opt->help,
421  g->group_def->name, g->arg);
422  return AVERROR(EINVAL);
423  }
424 
425  av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
426  o->key, o->opt->help, o->val);
427 
428  ret = write_option(optctx, o->opt, o->key, o->val);
429  if (ret < 0)
430  return ret;
431  }
432 
433  av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
434 
435  return 0;
436 }
437 
438 int locate_option(int argc, char **argv, const OptionDef *options,
439  const char *optname)
440 {
441  const OptionDef *po;
442  int i;
443 
444  for (i = 1; i < argc; i++) {
445  const char *cur_opt = argv[i];
446 
447  if (*cur_opt++ != '-')
448  continue;
449 
450  po = find_option(options, cur_opt);
451  if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
452  po = find_option(options, cur_opt + 2);
453 
454  if ((!po->name && !strcmp(cur_opt, optname)) ||
455  (po->name && !strcmp(optname, po->name)))
456  return i;
457 
458  if (!po->name || po->flags & HAS_ARG)
459  i++;
460  }
461  return 0;
462 }
463 
464 static void dump_argument(const char *a)
465 {
466  const unsigned char *p;
467 
468  for (p = a; *p; p++)
469  if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
470  *p == '_' || (*p >= 'a' && *p <= 'z')))
471  break;
472  if (!*p) {
473  fputs(a, report_file);
474  return;
475  }
476  fputc('"', report_file);
477  for (p = a; *p; p++) {
478  if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
479  fprintf(report_file, "\\%c", *p);
480  else if (*p < ' ' || *p > '~')
481  fprintf(report_file, "\\x%02x", *p);
482  else
483  fputc(*p, report_file);
484  }
485  fputc('"', report_file);
486 }
487 
488 static void check_options(const OptionDef *po)
489 {
490  while (po->name) {
491  if (po->flags & OPT_PERFILE)
493  po++;
494  }
495 }
496 
497 void parse_loglevel(int argc, char **argv, const OptionDef *options)
498 {
499  int idx = locate_option(argc, argv, options, "loglevel");
500  const char *env;
501 
502  check_options(options);
503 
504  if (!idx)
505  idx = locate_option(argc, argv, options, "v");
506  if (idx && argv[idx + 1])
507  opt_loglevel(NULL, "loglevel", argv[idx + 1]);
508  idx = locate_option(argc, argv, options, "report");
509  if ((env = getenv("FFREPORT")) || idx) {
510  init_report(env);
511  if (report_file) {
512  int i;
513  fprintf(report_file, "Command line:\n");
514  for (i = 0; i < argc; i++) {
515  dump_argument(argv[i]);
516  fputc(i < argc - 1 ? ' ' : '\n', report_file);
517  }
518  fflush(report_file);
519  }
520  }
521  idx = locate_option(argc, argv, options, "hide_banner");
522  if (idx)
523  hide_banner = 1;
524 }
525 
526 static const AVOption *opt_find(void *obj, const char *name, const char *unit,
527  int opt_flags, int search_flags)
528 {
529  const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
530  if(o && !o->flags)
531  return NULL;
532  return o;
533 }
534 
535 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS && (arg[0]=='-' || arg[0]=='+')) ? AV_DICT_APPEND : 0
536 int opt_default(void *optctx, const char *opt, const char *arg)
537 {
538  const AVOption *o;
539  int consumed = 0;
540  char opt_stripped[128];
541  const char *p;
542  const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
543 #if CONFIG_AVRESAMPLE
544  const AVClass *rc = avresample_get_class();
545 #endif
546 #if CONFIG_SWSCALE
547  const AVClass *sc = sws_get_class();
548 #endif
549 #if CONFIG_SWRESAMPLE
550  const AVClass *swr_class = swr_get_class();
551 #endif
552 
553  if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
555 
556  if (!(p = strchr(opt, ':')))
557  p = opt + strlen(opt);
558  av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
559 
560  if ((o = opt_find(&cc, opt_stripped, NULL, 0,
562  ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
563  (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
564  av_dict_set(&codec_opts, opt, arg, FLAGS);
565  consumed = 1;
566  }
567  if ((o = opt_find(&fc, opt, NULL, 0,
569  av_dict_set(&format_opts, opt, arg, FLAGS);
570  if (consumed)
571  av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
572  consumed = 1;
573  }
574 #if CONFIG_SWSCALE
575  if (!consumed && (o = opt_find(&sc, opt, NULL, 0,
577  struct SwsContext *sws = sws_alloc_context();
578  int ret = av_opt_set(sws, opt, arg, 0);
579  sws_freeContext(sws);
580  if (!strcmp(opt, "srcw") || !strcmp(opt, "srch") ||
581  !strcmp(opt, "dstw") || !strcmp(opt, "dsth") ||
582  !strcmp(opt, "src_format") || !strcmp(opt, "dst_format")) {
583  av_log(NULL, AV_LOG_ERROR, "Directly using swscale dimensions/format options is not supported, please use the -s or -pix_fmt options\n");
584  return AVERROR(EINVAL);
585  }
586  if (ret < 0) {
587  av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
588  return ret;
589  }
590 
591  av_dict_set(&sws_dict, opt, arg, FLAGS);
592 
593  consumed = 1;
594  }
595 #else
596  if (!consumed && !strcmp(opt, "sws_flags")) {
597  av_log(NULL, AV_LOG_WARNING, "Ignoring %s %s, due to disabled swscale\n", opt, arg);
598  consumed = 1;
599  }
600 #endif
601 #if CONFIG_SWRESAMPLE
602  if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
604  struct SwrContext *swr = swr_alloc();
605  int ret = av_opt_set(swr, opt, arg, 0);
606  swr_free(&swr);
607  if (ret < 0) {
608  av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
609  return ret;
610  }
611  av_dict_set(&swr_opts, opt, arg, FLAGS);
612  consumed = 1;
613  }
614 #endif
615 #if CONFIG_AVRESAMPLE
616  if ((o=opt_find(&rc, opt, NULL, 0,
618  av_dict_set(&resample_opts, opt, arg, FLAGS);
619  consumed = 1;
620  }
621 #endif
622 
623  if (consumed)
624  return 0;
626 }
627 
628 /*
629  * Check whether given option is a group separator.
630  *
631  * @return index of the group definition that matched or -1 if none
632  */
633 static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
634  const char *opt)
635 {
636  int i;
637 
638  for (i = 0; i < nb_groups; i++) {
639  const OptionGroupDef *p = &groups[i];
640  if (p->sep && !strcmp(p->sep, opt))
641  return i;
642  }
643 
644  return -1;
645 }
646 
647 /*
648  * Finish parsing an option group.
649  *
650  * @param group_idx which group definition should this group belong to
651  * @param arg argument of the group delimiting option
652  */
653 static void finish_group(OptionParseContext *octx, int group_idx,
654  const char *arg)
655 {
656  OptionGroupList *l = &octx->groups[group_idx];
657  OptionGroup *g;
658 
659  GROW_ARRAY(l->groups, l->nb_groups);
660  g = &l->groups[l->nb_groups - 1];
661 
662  *g = octx->cur_group;
663  g->arg = arg;
664  g->group_def = l->group_def;
665  g->sws_dict = sws_dict;
666  g->swr_opts = swr_opts;
667  g->codec_opts = codec_opts;
670 
671  codec_opts = NULL;
672  format_opts = NULL;
673  resample_opts = NULL;
674  sws_dict = NULL;
675  swr_opts = NULL;
676  init_opts();
677 
678  memset(&octx->cur_group, 0, sizeof(octx->cur_group));
679 }
680 
681 /*
682  * Add an option instance to currently parsed group.
683  */
684 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
685  const char *key, const char *val)
686 {
687  int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
688  OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
689 
690  GROW_ARRAY(g->opts, g->nb_opts);
691  g->opts[g->nb_opts - 1].opt = opt;
692  g->opts[g->nb_opts - 1].key = key;
693  g->opts[g->nb_opts - 1].val = val;
694 }
695 
697  const OptionGroupDef *groups, int nb_groups)
698 {
699  static const OptionGroupDef global_group = { "global" };
700  int i;
701 
702  memset(octx, 0, sizeof(*octx));
703 
704  octx->nb_groups = nb_groups;
705  octx->groups = av_mallocz_array(octx->nb_groups, sizeof(*octx->groups));
706  if (!octx->groups)
707  exit_program(1);
708 
709  for (i = 0; i < octx->nb_groups; i++)
710  octx->groups[i].group_def = &groups[i];
711 
712  octx->global_opts.group_def = &global_group;
713  octx->global_opts.arg = "";
714 
715  init_opts();
716 }
717 
719 {
720  int i, j;
721 
722  for (i = 0; i < octx->nb_groups; i++) {
723  OptionGroupList *l = &octx->groups[i];
724 
725  for (j = 0; j < l->nb_groups; j++) {
726  av_freep(&l->groups[j].opts);
730 
731  av_dict_free(&l->groups[j].sws_dict);
732  av_dict_free(&l->groups[j].swr_opts);
733  }
734  av_freep(&l->groups);
735  }
736  av_freep(&octx->groups);
737 
738  av_freep(&octx->cur_group.opts);
739  av_freep(&octx->global_opts.opts);
740 
741  uninit_opts();
742 }
743 
744 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
745  const OptionDef *options,
746  const OptionGroupDef *groups, int nb_groups)
747 {
748  int optindex = 1;
749  int dashdash = -2;
750 
751  /* perform system-dependent conversions for arguments list */
752  prepare_app_arguments(&argc, &argv);
753 
754  init_parse_context(octx, groups, nb_groups);
755  av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
756 
757  while (optindex < argc) {
758  const char *opt = argv[optindex++], *arg;
759  const OptionDef *po;
760  int ret;
761 
762  av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
763 
764  if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
765  dashdash = optindex;
766  continue;
767  }
768  /* unnamed group separators, e.g. output filename */
769  if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
770  finish_group(octx, 0, opt);
771  av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
772  continue;
773  }
774  opt++;
775 
776 #define GET_ARG(arg) \
777 do { \
778  arg = argv[optindex++]; \
779  if (!arg) { \
780  av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
781  return AVERROR(EINVAL); \
782  } \
783 } while (0)
784 
785  /* named group separators, e.g. -i */
786  if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
787  GET_ARG(arg);
788  finish_group(octx, ret, arg);
789  av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
790  groups[ret].name, arg);
791  continue;
792  }
793 
794  /* normal options */
795  po = find_option(options, opt);
796  if (po->name) {
797  if (po->flags & OPT_EXIT) {
798  /* optional argument, e.g. -h */
799  arg = argv[optindex++];
800  } else if (po->flags & HAS_ARG) {
801  GET_ARG(arg);
802  } else {
803  arg = "1";
804  }
805 
806  add_opt(octx, po, opt, arg);
807  av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
808  "argument '%s'.\n", po->name, po->help, arg);
809  continue;
810  }
811 
812  /* AVOptions */
813  if (argv[optindex]) {
814  ret = opt_default(NULL, opt, argv[optindex]);
815  if (ret >= 0) {
816  av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
817  "argument '%s'.\n", opt, argv[optindex]);
818  optindex++;
819  continue;
820  } else if (ret != AVERROR_OPTION_NOT_FOUND) {
821  av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
822  "with argument '%s'.\n", opt, argv[optindex]);
823  return ret;
824  }
825  }
826 
827  /* boolean -nofoo options */
828  if (opt[0] == 'n' && opt[1] == 'o' &&
829  (po = find_option(options, opt + 2)) &&
830  po->name && po->flags & OPT_BOOL) {
831  add_opt(octx, po, opt, "0");
832  av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
833  "argument 0.\n", po->name, po->help);
834  continue;
835  }
836 
837  av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
839  }
840 
841  if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
842  av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
843  "commandline.\n");
844 
845  av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
846 
847  return 0;
848 }
849 
850 int opt_cpuflags(void *optctx, const char *opt, const char *arg)
851 {
852  int ret;
853  unsigned flags = av_get_cpu_flags();
854 
855  if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
856  return ret;
857 
858  av_force_cpu_flags(flags);
859  return 0;
860 }
861 
862 int opt_loglevel(void *optctx, const char *opt, const char *arg)
863 {
864  const struct { const char *name; int level; } log_levels[] = {
865  { "quiet" , AV_LOG_QUIET },
866  { "panic" , AV_LOG_PANIC },
867  { "fatal" , AV_LOG_FATAL },
868  { "error" , AV_LOG_ERROR },
869  { "warning", AV_LOG_WARNING },
870  { "info" , AV_LOG_INFO },
871  { "verbose", AV_LOG_VERBOSE },
872  { "debug" , AV_LOG_DEBUG },
873  { "trace" , AV_LOG_TRACE },
874  };
875  char *tail;
876  int level;
877  int flags;
878  int i;
879 
880  flags = av_log_get_flags();
881  tail = strstr(arg, "repeat");
882  if (tail)
883  flags &= ~AV_LOG_SKIP_REPEATED;
884  else
885  flags |= AV_LOG_SKIP_REPEATED;
886 
887  av_log_set_flags(flags);
888  if (tail == arg)
889  arg += 6 + (arg[6]=='+');
890  if(tail && !*arg)
891  return 0;
892 
893  for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
894  if (!strcmp(log_levels[i].name, arg)) {
895  av_log_set_level(log_levels[i].level);
896  return 0;
897  }
898  }
899 
900  level = strtol(arg, &tail, 10);
901  if (*tail) {
902  av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
903  "Possible levels are numbers or:\n", arg);
904  for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
905  av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
906  exit_program(1);
907  }
908  av_log_set_level(level);
909  return 0;
910 }
911 
912 static void expand_filename_template(AVBPrint *bp, const char *template,
913  struct tm *tm)
914 {
915  int c;
916 
917  while ((c = *(template++))) {
918  if (c == '%') {
919  if (!(c = *(template++)))
920  break;
921  switch (c) {
922  case 'p':
923  av_bprintf(bp, "%s", program_name);
924  break;
925  case 't':
926  av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
927  tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
928  tm->tm_hour, tm->tm_min, tm->tm_sec);
929  break;
930  case '%':
931  av_bprint_chars(bp, c, 1);
932  break;
933  }
934  } else {
935  av_bprint_chars(bp, c, 1);
936  }
937  }
938 }
939 
940 static int init_report(const char *env)
941 {
942  char *filename_template = NULL;
943  char *key, *val;
944  int ret, count = 0;
945  time_t now;
946  struct tm *tm;
947  AVBPrint filename;
948 
949  if (report_file) /* already opened */
950  return 0;
951  time(&now);
952  tm = localtime(&now);
953 
954  while (env && *env) {
955  if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
956  if (count)
958  "Failed to parse FFREPORT environment variable: %s\n",
959  av_err2str(ret));
960  break;
961  }
962  if (*env)
963  env++;
964  count++;
965  if (!strcmp(key, "file")) {
966  av_free(filename_template);
967  filename_template = val;
968  val = NULL;
969  } else if (!strcmp(key, "level")) {
970  char *tail;
971  report_file_level = strtol(val, &tail, 10);
972  if (*tail) {
973  av_log(NULL, AV_LOG_FATAL, "Invalid report file level\n");
974  exit_program(1);
975  }
976  } else {
977  av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
978  }
979  av_free(val);
980  av_free(key);
981  }
982 
983  av_bprint_init(&filename, 0, 1);
984  expand_filename_template(&filename,
985  av_x_if_null(filename_template, "%p-%t.log"), tm);
986  av_free(filename_template);
987  if (!av_bprint_is_complete(&filename)) {
988  av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
989  return AVERROR(ENOMEM);
990  }
991 
992  report_file = fopen(filename.str, "w");
993  if (!report_file) {
994  int ret = AVERROR(errno);
995  av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
996  filename.str, strerror(errno));
997  return ret;
998  }
1001  "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
1002  "Report written to \"%s\"\n",
1003  program_name,
1004  tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
1005  tm->tm_hour, tm->tm_min, tm->tm_sec,
1006  filename.str);
1007  av_bprint_finalize(&filename, NULL);
1008  return 0;
1009 }
1010 
1011 int opt_report(const char *opt)
1012 {
1013  return init_report(NULL);
1014 }
1015 
1016 int opt_max_alloc(void *optctx, const char *opt, const char *arg)
1017 {
1018  char *tail;
1019  size_t max;
1020 
1021  max = strtol(arg, &tail, 10);
1022  if (*tail) {
1023  av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
1024  exit_program(1);
1025  }
1026  av_max_alloc(max);
1027  return 0;
1028 }
1029 
1030 int opt_timelimit(void *optctx, const char *opt, const char *arg)
1031 {
1032 #if HAVE_SETRLIMIT
1033  int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
1034  struct rlimit rl = { lim, lim + 1 };
1035  if (setrlimit(RLIMIT_CPU, &rl))
1036  perror("setrlimit");
1037 #else
1038  av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
1039 #endif
1040  return 0;
1041 }
1042 
1043 void print_error(const char *filename, int err)
1044 {
1045  char errbuf[128];
1046  const char *errbuf_ptr = errbuf;
1047 
1048  if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
1049  errbuf_ptr = strerror(AVUNERROR(err));
1050  av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
1051 }
1052 
1053 static int warned_cfg = 0;
1054 
1055 #define INDENT 1
1056 #define SHOW_VERSION 2
1057 #define SHOW_CONFIG 4
1058 #define SHOW_COPYRIGHT 8
1059 
1060 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
1061  if (CONFIG_##LIBNAME) { \
1062  const char *indent = flags & INDENT? " " : ""; \
1063  if (flags & SHOW_VERSION) { \
1064  unsigned int version = libname##_version(); \
1065  av_log(NULL, level, \
1066  "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n", \
1067  indent, #libname, \
1068  LIB##LIBNAME##_VERSION_MAJOR, \
1069  LIB##LIBNAME##_VERSION_MINOR, \
1070  LIB##LIBNAME##_VERSION_MICRO, \
1071  AV_VERSION_MAJOR(version), AV_VERSION_MINOR(version),\
1072  AV_VERSION_MICRO(version)); \
1073  } \
1074  if (flags & SHOW_CONFIG) { \
1075  const char *cfg = libname##_configuration(); \
1076  if (strcmp(FFMPEG_CONFIGURATION, cfg)) { \
1077  if (!warned_cfg) { \
1078  av_log(NULL, level, \
1079  "%sWARNING: library configuration mismatch\n", \
1080  indent); \
1081  warned_cfg = 1; \
1082  } \
1083  av_log(NULL, level, "%s%-11s configuration: %s\n", \
1084  indent, #libname, cfg); \
1085  } \
1086  } \
1087  } \
1088 
1089 static void print_all_libs_info(int flags, int level)
1090 {
1091  PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
1092  PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
1093  PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
1094  PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
1095  PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
1096  PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
1097  PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
1098  PRINT_LIB_INFO(swresample, SWRESAMPLE, flags, level);
1099  PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
1100 }
1101 
1102 static void print_program_info(int flags, int level)
1103 {
1104  const char *indent = flags & INDENT? " " : "";
1105 
1106  av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
1107  if (flags & SHOW_COPYRIGHT)
1108  av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
1109  program_birth_year, CONFIG_THIS_YEAR);
1110  av_log(NULL, level, "\n");
1111  av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
1112 
1113  av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
1114 }
1115 
1116 static void print_buildconf(int flags, int level)
1117 {
1118  const char *indent = flags & INDENT ? " " : "";
1119  char str[] = { FFMPEG_CONFIGURATION };
1120  char *conflist, *remove_tilde, *splitconf;
1121 
1122  // Change all the ' --' strings to '~--' so that
1123  // they can be identified as tokens.
1124  while ((conflist = strstr(str, " --")) != NULL) {
1125  strncpy(conflist, "~--", 3);
1126  }
1127 
1128  // Compensate for the weirdness this would cause
1129  // when passing 'pkg-config --static'.
1130  while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
1131  strncpy(remove_tilde, "pkg-config ", 11);
1132  }
1133 
1134  splitconf = strtok(str, "~");
1135  av_log(NULL, level, "\n%sconfiguration:\n", indent);
1136  while (splitconf != NULL) {
1137  av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
1138  splitconf = strtok(NULL, "~");
1139  }
1140 }
1141 
1142 void show_banner(int argc, char **argv, const OptionDef *options)
1143 {
1144  int idx = locate_option(argc, argv, options, "version");
1145  if (hide_banner || idx)
1146  return;
1147 
1151 }
1152 
1153 int show_version(void *optctx, const char *opt, const char *arg)
1154 {
1158 
1159  return 0;
1160 }
1161 
1162 int show_buildconf(void *optctx, const char *opt, const char *arg)
1163 {
1166 
1167  return 0;
1168 }
1169 
1170 int show_license(void *optctx, const char *opt, const char *arg)
1171 {
1172 #if CONFIG_NONFREE
1173  printf(
1174  "This version of %s has nonfree parts compiled in.\n"
1175  "Therefore it is not legally redistributable.\n",
1176  program_name );
1177 #elif CONFIG_GPLV3
1178  printf(
1179  "%s is free software; you can redistribute it and/or modify\n"
1180  "it under the terms of the GNU General Public License as published by\n"
1181  "the Free Software Foundation; either version 3 of the License, or\n"
1182  "(at your option) any later version.\n"
1183  "\n"
1184  "%s is distributed in the hope that it will be useful,\n"
1185  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1186  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1187  "GNU General Public License for more details.\n"
1188  "\n"
1189  "You should have received a copy of the GNU General Public License\n"
1190  "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1192 #elif CONFIG_GPL
1193  printf(
1194  "%s is free software; you can redistribute it and/or modify\n"
1195  "it under the terms of the GNU General Public License as published by\n"
1196  "the Free Software Foundation; either version 2 of the License, or\n"
1197  "(at your option) any later version.\n"
1198  "\n"
1199  "%s is distributed in the hope that it will be useful,\n"
1200  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1201  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1202  "GNU General Public License for more details.\n"
1203  "\n"
1204  "You should have received a copy of the GNU General Public License\n"
1205  "along with %s; if not, write to the Free Software\n"
1206  "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1208 #elif CONFIG_LGPLV3
1209  printf(
1210  "%s is free software; you can redistribute it and/or modify\n"
1211  "it under the terms of the GNU Lesser General Public License as published by\n"
1212  "the Free Software Foundation; either version 3 of the License, or\n"
1213  "(at your option) any later version.\n"
1214  "\n"
1215  "%s is distributed in the hope that it will be useful,\n"
1216  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1217  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1218  "GNU Lesser General Public License for more details.\n"
1219  "\n"
1220  "You should have received a copy of the GNU Lesser General Public License\n"
1221  "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1223 #else
1224  printf(
1225  "%s is free software; you can redistribute it and/or\n"
1226  "modify it under the terms of the GNU Lesser General Public\n"
1227  "License as published by the Free Software Foundation; either\n"
1228  "version 2.1 of the License, or (at your option) any later version.\n"
1229  "\n"
1230  "%s is distributed in the hope that it will be useful,\n"
1231  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1232  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
1233  "Lesser General Public License for more details.\n"
1234  "\n"
1235  "You should have received a copy of the GNU Lesser General Public\n"
1236  "License along with %s; if not, write to the Free Software\n"
1237  "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1239 #endif
1240 
1241  return 0;
1242 }
1243 
1244 static int is_device(const AVClass *avclass)
1245 {
1246  if (!avclass)
1247  return 0;
1248  return AV_IS_INPUT_DEVICE(avclass->category) || AV_IS_OUTPUT_DEVICE(avclass->category);
1249 }
1250 
1251 static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only)
1252 {
1253  AVInputFormat *ifmt = NULL;
1254  AVOutputFormat *ofmt = NULL;
1255  const char *last_name;
1256  int is_dev;
1257 
1258  printf("%s\n"
1259  " D. = Demuxing supported\n"
1260  " .E = Muxing supported\n"
1261  " --\n", device_only ? "Devices:" : "File formats:");
1262  last_name = "000";
1263  for (;;) {
1264  int decode = 0;
1265  int encode = 0;
1266  const char *name = NULL;
1267  const char *long_name = NULL;
1268 
1269  while ((ofmt = av_oformat_next(ofmt))) {
1270  is_dev = is_device(ofmt->priv_class);
1271  if (!is_dev && device_only)
1272  continue;
1273  if ((!name || strcmp(ofmt->name, name) < 0) &&
1274  strcmp(ofmt->name, last_name) > 0) {
1275  name = ofmt->name;
1276  long_name = ofmt->long_name;
1277  encode = 1;
1278  }
1279  }
1280  while ((ifmt = av_iformat_next(ifmt))) {
1281  is_dev = is_device(ifmt->priv_class);
1282  if (!is_dev && device_only)
1283  continue;
1284  if ((!name || strcmp(ifmt->name, name) < 0) &&
1285  strcmp(ifmt->name, last_name) > 0) {
1286  name = ifmt->name;
1287  long_name = ifmt->long_name;
1288  encode = 0;
1289  }
1290  if (name && strcmp(ifmt->name, name) == 0)
1291  decode = 1;
1292  }
1293  if (!name)
1294  break;
1295  last_name = name;
1296 
1297  printf(" %s%s %-15s %s\n",
1298  decode ? "D" : " ",
1299  encode ? "E" : " ",
1300  name,
1301  long_name ? long_name:" ");
1302  }
1303  return 0;
1304 }
1305 
1306 int show_formats(void *optctx, const char *opt, const char *arg)
1307 {
1308  return show_formats_devices(optctx, opt, arg, 0);
1309 }
1310 
1311 int show_devices(void *optctx, const char *opt, const char *arg)
1312 {
1313  return show_formats_devices(optctx, opt, arg, 1);
1314 }
1315 
1316 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
1317  if (codec->field) { \
1318  const type *p = codec->field; \
1319  \
1320  printf(" Supported " list_name ":"); \
1321  while (*p != term) { \
1322  get_name(*p); \
1323  printf(" %s", name); \
1324  p++; \
1325  } \
1326  printf("\n"); \
1327  } \
1328 
1329 static void print_codec(const AVCodec *c)
1330 {
1331  int encoder = av_codec_is_encoder(c);
1332 
1333  printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
1334  c->long_name ? c->long_name : "");
1335 
1336  printf(" General capabilities: ");
1338  printf("horizband ");
1339  if (c->capabilities & AV_CODEC_CAP_DR1)
1340  printf("dr1 ");
1342  printf("trunc ");
1344  printf("delay ");
1346  printf("small ");
1348  printf("subframes ");
1350  printf("exp ");
1352  printf("chconf ");
1354  printf("paramchange ");
1356  printf("variable ");
1360  printf("threads ");
1361  if (!c->capabilities)
1362  printf("none");
1363  printf("\n");
1364 
1365  if (c->type == AVMEDIA_TYPE_VIDEO ||
1366  c->type == AVMEDIA_TYPE_AUDIO) {
1367  printf(" Threading capabilities: ");
1372  AV_CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
1373  case AV_CODEC_CAP_FRAME_THREADS: printf("frame"); break;
1374  case AV_CODEC_CAP_SLICE_THREADS: printf("slice"); break;
1375  case AV_CODEC_CAP_AUTO_THREADS : printf("auto"); break;
1376  default: printf("none"); break;
1377  }
1378  printf("\n");
1379  }
1380 
1381  if (c->supported_framerates) {
1382  const AVRational *fps = c->supported_framerates;
1383 
1384  printf(" Supported framerates:");
1385  while (fps->num) {
1386  printf(" %d/%d", fps->num, fps->den);
1387  fps++;
1388  }
1389  printf("\n");
1390  }
1391  PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
1393  PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
1395  PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
1397  PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
1398  0, GET_CH_LAYOUT_DESC);
1399 
1400  if (c->priv_class) {
1404  }
1405 }
1406 
1408 {
1409  switch (type) {
1410  case AVMEDIA_TYPE_VIDEO: return 'V';
1411  case AVMEDIA_TYPE_AUDIO: return 'A';
1412  case AVMEDIA_TYPE_DATA: return 'D';
1413  case AVMEDIA_TYPE_SUBTITLE: return 'S';
1414  case AVMEDIA_TYPE_ATTACHMENT:return 'T';
1415  default: return '?';
1416  }
1417 }
1418 
1419 static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
1420  int encoder)
1421 {
1422  while ((prev = av_codec_next(prev))) {
1423  if (prev->id == id &&
1424  (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
1425  return prev;
1426  }
1427  return NULL;
1428 }
1429 
1430 static int compare_codec_desc(const void *a, const void *b)
1431 {
1432  const AVCodecDescriptor * const *da = a;
1433  const AVCodecDescriptor * const *db = b;
1434 
1435  return (*da)->type != (*db)->type ? FFDIFFSIGN((*da)->type, (*db)->type) :
1436  strcmp((*da)->name, (*db)->name);
1437 }
1438 
1439 static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
1440 {
1441  const AVCodecDescriptor *desc = NULL;
1442  const AVCodecDescriptor **codecs;
1443  unsigned nb_codecs = 0, i = 0;
1444 
1445  while ((desc = avcodec_descriptor_next(desc)))
1446  nb_codecs++;
1447  if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
1448  av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
1449  exit_program(1);
1450  }
1451  desc = NULL;
1452  while ((desc = avcodec_descriptor_next(desc)))
1453  codecs[i++] = desc;
1454  av_assert0(i == nb_codecs);
1455  qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
1456  *rcodecs = codecs;
1457  return nb_codecs;
1458 }
1459 
1460 static void print_codecs_for_id(enum AVCodecID id, int encoder)
1461 {
1462  const AVCodec *codec = NULL;
1463 
1464  printf(" (%s: ", encoder ? "encoders" : "decoders");
1465 
1466  while ((codec = next_codec_for_id(id, codec, encoder)))
1467  printf("%s ", codec->name);
1468 
1469  printf(")");
1470 }
1471 
1472 int show_codecs(void *optctx, const char *opt, const char *arg)
1473 {
1474  const AVCodecDescriptor **codecs;
1475  unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1476 
1477  printf("Codecs:\n"
1478  " D..... = Decoding supported\n"
1479  " .E.... = Encoding supported\n"
1480  " ..V... = Video codec\n"
1481  " ..A... = Audio codec\n"
1482  " ..S... = Subtitle codec\n"
1483  " ...I.. = Intra frame-only codec\n"
1484  " ....L. = Lossy compression\n"
1485  " .....S = Lossless compression\n"
1486  " -------\n");
1487  for (i = 0; i < nb_codecs; i++) {
1488  const AVCodecDescriptor *desc = codecs[i];
1489  const AVCodec *codec = NULL;
1490 
1491  if (strstr(desc->name, "_deprecated"))
1492  continue;
1493 
1494  printf(" ");
1495  printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1496  printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1497 
1498  printf("%c", get_media_type_char(desc->type));
1499  printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1500  printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1501  printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1502 
1503  printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1504 
1505  /* print decoders/encoders when there's more than one or their
1506  * names are different from codec name */
1507  while ((codec = next_codec_for_id(desc->id, codec, 0))) {
1508  if (strcmp(codec->name, desc->name)) {
1509  print_codecs_for_id(desc->id, 0);
1510  break;
1511  }
1512  }
1513  codec = NULL;
1514  while ((codec = next_codec_for_id(desc->id, codec, 1))) {
1515  if (strcmp(codec->name, desc->name)) {
1516  print_codecs_for_id(desc->id, 1);
1517  break;
1518  }
1519  }
1520 
1521  printf("\n");
1522  }
1523  av_free(codecs);
1524  return 0;
1525 }
1526 
1527 static void print_codecs(int encoder)
1528 {
1529  const AVCodecDescriptor **codecs;
1530  unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1531 
1532  printf("%s:\n"
1533  " V..... = Video\n"
1534  " A..... = Audio\n"
1535  " S..... = Subtitle\n"
1536  " .F.... = Frame-level multithreading\n"
1537  " ..S... = Slice-level multithreading\n"
1538  " ...X.. = Codec is experimental\n"
1539  " ....B. = Supports draw_horiz_band\n"
1540  " .....D = Supports direct rendering method 1\n"
1541  " ------\n",
1542  encoder ? "Encoders" : "Decoders");
1543  for (i = 0; i < nb_codecs; i++) {
1544  const AVCodecDescriptor *desc = codecs[i];
1545  const AVCodec *codec = NULL;
1546 
1547  while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1548  printf(" %c", get_media_type_char(desc->type));
1549  printf((codec->capabilities & AV_CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1550  printf((codec->capabilities & AV_CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1551  printf((codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1552  printf((codec->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
1553  printf((codec->capabilities & AV_CODEC_CAP_DR1) ? "D" : ".");
1554 
1555  printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1556  if (strcmp(codec->name, desc->name))
1557  printf(" (codec %s)", desc->name);
1558 
1559  printf("\n");
1560  }
1561  }
1562  av_free(codecs);
1563 }
1564 
1565 int show_decoders(void *optctx, const char *opt, const char *arg)
1566 {
1567  print_codecs(0);
1568  return 0;
1569 }
1570 
1571 int show_encoders(void *optctx, const char *opt, const char *arg)
1572 {
1573  print_codecs(1);
1574  return 0;
1575 }
1576 
1577 int show_bsfs(void *optctx, const char *opt, const char *arg)
1578 {
1579  AVBitStreamFilter *bsf = NULL;
1580 
1581  printf("Bitstream filters:\n");
1582  while ((bsf = av_bitstream_filter_next(bsf)))
1583  printf("%s\n", bsf->name);
1584  printf("\n");
1585  return 0;
1586 }
1587 
1588 int show_protocols(void *optctx, const char *opt, const char *arg)
1589 {
1590  void *opaque = NULL;
1591  const char *name;
1592 
1593  printf("Supported file protocols:\n"
1594  "Input:\n");
1595  while ((name = avio_enum_protocols(&opaque, 0)))
1596  printf(" %s\n", name);
1597  printf("Output:\n");
1598  while ((name = avio_enum_protocols(&opaque, 1)))
1599  printf(" %s\n", name);
1600  return 0;
1601 }
1602 
1603 int show_filters(void *optctx, const char *opt, const char *arg)
1604 {
1605 #if CONFIG_AVFILTER
1606  const AVFilter *filter = NULL;
1607  char descr[64], *descr_cur;
1608  int i, j;
1609  const AVFilterPad *pad;
1610 
1611  printf("Filters:\n"
1612  " T.. = Timeline support\n"
1613  " .S. = Slice threading\n"
1614  " ..C = Command support\n"
1615  " A = Audio input/output\n"
1616  " V = Video input/output\n"
1617  " N = Dynamic number and/or type of input/output\n"
1618  " | = Source or sink filter\n");
1619  while ((filter = avfilter_next(filter))) {
1620  descr_cur = descr;
1621  for (i = 0; i < 2; i++) {
1622  if (i) {
1623  *(descr_cur++) = '-';
1624  *(descr_cur++) = '>';
1625  }
1626  pad = i ? filter->outputs : filter->inputs;
1627  for (j = 0; pad && avfilter_pad_get_name(pad, j); j++) {
1628  if (descr_cur >= descr + sizeof(descr) - 4)
1629  break;
1630  *(descr_cur++) = get_media_type_char(avfilter_pad_get_type(pad, j));
1631  }
1632  if (!j)
1633  *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
1634  ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
1635  }
1636  *descr_cur = 0;
1637  printf(" %c%c%c %-17s %-10s %s\n",
1638  filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
1639  filter->flags & AVFILTER_FLAG_SLICE_THREADS ? 'S' : '.',
1640  filter->process_command ? 'C' : '.',
1641  filter->name, descr, filter->description);
1642  }
1643 #else
1644  printf("No filters available: libavfilter disabled\n");
1645 #endif
1646  return 0;
1647 }
1648 
1649 int show_colors(void *optctx, const char *opt, const char *arg)
1650 {
1651  const char *name;
1652  const uint8_t *rgb;
1653  int i;
1654 
1655  printf("%-32s #RRGGBB\n", "name");
1656 
1657  for (i = 0; name = av_get_known_color_name(i, &rgb); i++)
1658  printf("%-32s #%02x%02x%02x\n", name, rgb[0], rgb[1], rgb[2]);
1659 
1660  return 0;
1661 }
1662 
1663 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1664 {
1665  const AVPixFmtDescriptor *pix_desc = NULL;
1666 
1667  printf("Pixel formats:\n"
1668  "I.... = Supported Input format for conversion\n"
1669  ".O... = Supported Output format for conversion\n"
1670  "..H.. = Hardware accelerated format\n"
1671  "...P. = Paletted format\n"
1672  "....B = Bitstream format\n"
1673  "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1674  "-----\n");
1675 
1676 #if !CONFIG_SWSCALE
1677 # define sws_isSupportedInput(x) 0
1678 # define sws_isSupportedOutput(x) 0
1679 #endif
1680 
1681  while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1682  enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1683  printf("%c%c%c%c%c %-16s %d %2d\n",
1684  sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1685  sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1686  pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL ? 'H' : '.',
1687  pix_desc->flags & AV_PIX_FMT_FLAG_PAL ? 'P' : '.',
1688  pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
1689  pix_desc->name,
1690  pix_desc->nb_components,
1691  av_get_bits_per_pixel(pix_desc));
1692  }
1693  return 0;
1694 }
1695 
1696 int show_layouts(void *optctx, const char *opt, const char *arg)
1697 {
1698  int i = 0;
1699  uint64_t layout, j;
1700  const char *name, *descr;
1701 
1702  printf("Individual channels:\n"
1703  "NAME DESCRIPTION\n");
1704  for (i = 0; i < 63; i++) {
1705  name = av_get_channel_name((uint64_t)1 << i);
1706  if (!name)
1707  continue;
1708  descr = av_get_channel_description((uint64_t)1 << i);
1709  printf("%-14s %s\n", name, descr);
1710  }
1711  printf("\nStandard channel layouts:\n"
1712  "NAME DECOMPOSITION\n");
1713  for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
1714  if (name) {
1715  printf("%-14s ", name);
1716  for (j = 1; j; j <<= 1)
1717  if ((layout & j))
1718  printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
1719  printf("\n");
1720  }
1721  }
1722  return 0;
1723 }
1724 
1725 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1726 {
1727  int i;
1728  char fmt_str[128];
1729  for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1730  printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1731  return 0;
1732 }
1733 
1734 static void show_help_codec(const char *name, int encoder)
1735 {
1736  const AVCodecDescriptor *desc;
1737  const AVCodec *codec;
1738 
1739  if (!name) {
1740  av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1741  return;
1742  }
1743 
1744  codec = encoder ? avcodec_find_encoder_by_name(name) :
1746 
1747  if (codec)
1748  print_codec(codec);
1749  else if ((desc = avcodec_descriptor_get_by_name(name))) {
1750  int printed = 0;
1751 
1752  while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1753  printed = 1;
1754  print_codec(codec);
1755  }
1756 
1757  if (!printed) {
1758  av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
1759  "but no %s for it are available. FFmpeg might need to be "
1760  "recompiled with additional external libraries.\n",
1761  name, encoder ? "encoders" : "decoders");
1762  }
1763  } else {
1764  av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
1765  name);
1766  }
1767 }
1768 
1769 static void show_help_demuxer(const char *name)
1770 {
1771  const AVInputFormat *fmt = av_find_input_format(name);
1772 
1773  if (!fmt) {
1774  av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1775  return;
1776  }
1777 
1778  printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1779 
1780  if (fmt->extensions)
1781  printf(" Common extensions: %s.\n", fmt->extensions);
1782 
1783  if (fmt->priv_class)
1785 }
1786 
1787 static void show_help_muxer(const char *name)
1788 {
1789  const AVCodecDescriptor *desc;
1790  const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1791 
1792  if (!fmt) {
1793  av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1794  return;
1795  }
1796 
1797  printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1798 
1799  if (fmt->extensions)
1800  printf(" Common extensions: %s.\n", fmt->extensions);
1801  if (fmt->mime_type)
1802  printf(" Mime type: %s.\n", fmt->mime_type);
1803  if (fmt->video_codec != AV_CODEC_ID_NONE &&
1804  (desc = avcodec_descriptor_get(fmt->video_codec))) {
1805  printf(" Default video codec: %s.\n", desc->name);
1806  }
1807  if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1808  (desc = avcodec_descriptor_get(fmt->audio_codec))) {
1809  printf(" Default audio codec: %s.\n", desc->name);
1810  }
1811  if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1812  (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
1813  printf(" Default subtitle codec: %s.\n", desc->name);
1814  }
1815 
1816  if (fmt->priv_class)
1818 }
1819 
1820 #if CONFIG_AVFILTER
1821 static void show_help_filter(const char *name)
1822 {
1823 #if CONFIG_AVFILTER
1824  const AVFilter *f = avfilter_get_by_name(name);
1825  int i, count;
1826 
1827  if (!name) {
1828  av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
1829  return;
1830  } else if (!f) {
1831  av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
1832  return;
1833  }
1834 
1835  printf("Filter %s\n", f->name);
1836  if (f->description)
1837  printf(" %s\n", f->description);
1838 
1840  printf(" slice threading supported\n");
1841 
1842  printf(" Inputs:\n");
1843  count = avfilter_pad_count(f->inputs);
1844  for (i = 0; i < count; i++) {
1845  printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
1847  }
1849  printf(" dynamic (depending on the options)\n");
1850  else if (!count)
1851  printf(" none (source filter)\n");
1852 
1853  printf(" Outputs:\n");
1854  count = avfilter_pad_count(f->outputs);
1855  for (i = 0; i < count; i++) {
1856  printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
1858  }
1860  printf(" dynamic (depending on the options)\n");
1861  else if (!count)
1862  printf(" none (sink filter)\n");
1863 
1864  if (f->priv_class)
1868  printf("This filter has support for timeline through the 'enable' option.\n");
1869 #else
1870  av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
1871  "can not to satisfy request\n");
1872 #endif
1873 }
1874 #endif
1875 
1876 int show_help(void *optctx, const char *opt, const char *arg)
1877 {
1878  char *topic, *par;
1880 
1881  topic = av_strdup(arg ? arg : "");
1882  if (!topic)
1883  return AVERROR(ENOMEM);
1884  par = strchr(topic, '=');
1885  if (par)
1886  *par++ = 0;
1887 
1888  if (!*topic) {
1889  show_help_default(topic, par);
1890  } else if (!strcmp(topic, "decoder")) {
1891  show_help_codec(par, 0);
1892  } else if (!strcmp(topic, "encoder")) {
1893  show_help_codec(par, 1);
1894  } else if (!strcmp(topic, "demuxer")) {
1895  show_help_demuxer(par);
1896  } else if (!strcmp(topic, "muxer")) {
1897  show_help_muxer(par);
1898 #if CONFIG_AVFILTER
1899  } else if (!strcmp(topic, "filter")) {
1900  show_help_filter(par);
1901 #endif
1902  } else {
1903  show_help_default(topic, par);
1904  }
1905 
1906  av_freep(&topic);
1907  return 0;
1908 }
1909 
1910 int read_yesno(void)
1911 {
1912  int c = getchar();
1913  int yesno = (av_toupper(c) == 'Y');
1914 
1915  while (c != '\n' && c != EOF)
1916  c = getchar();
1917 
1918  return yesno;
1919 }
1920 
1921 FILE *get_preset_file(char *filename, size_t filename_size,
1922  const char *preset_name, int is_path,
1923  const char *codec_name)
1924 {
1925  FILE *f = NULL;
1926  int i;
1927  const char *base[3] = { getenv("FFMPEG_DATADIR"),
1928  getenv("HOME"),
1929  FFMPEG_DATADIR, };
1930 
1931  if (is_path) {
1932  av_strlcpy(filename, preset_name, filename_size);
1933  f = fopen(filename, "r");
1934  } else {
1935 #ifdef _WIN32
1936  char datadir[MAX_PATH], *ls;
1937  base[2] = NULL;
1938 
1939  if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
1940  {
1941  for (ls = datadir; ls < datadir + strlen(datadir); ls++)
1942  if (*ls == '\\') *ls = '/';
1943 
1944  if (ls = strrchr(datadir, '/'))
1945  {
1946  *ls = 0;
1947  strncat(datadir, "/ffpresets", sizeof(datadir) - 1 - strlen(datadir));
1948  base[2] = datadir;
1949  }
1950  }
1951 #endif
1952  for (i = 0; i < 3 && !f; i++) {
1953  if (!base[i])
1954  continue;
1955  snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
1956  i != 1 ? "" : "/.ffmpeg", preset_name);
1957  f = fopen(filename, "r");
1958  if (!f && codec_name) {
1959  snprintf(filename, filename_size,
1960  "%s%s/%s-%s.ffpreset",
1961  base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
1962  preset_name);
1963  f = fopen(filename, "r");
1964  }
1965  }
1966  }
1967 
1968  return f;
1969 }
1970 
1971 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
1972 {
1973  int ret = avformat_match_stream_specifier(s, st, spec);
1974  if (ret < 0)
1975  av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
1976  return ret;
1977 }
1978 
1980  AVFormatContext *s, AVStream *st, AVCodec *codec)
1981 {
1982  AVDictionary *ret = NULL;
1983  AVDictionaryEntry *t = NULL;
1986  char prefix = 0;
1987  const AVClass *cc = avcodec_get_class();
1988 
1989  if (!codec)
1990  codec = s->oformat ? avcodec_find_encoder(codec_id)
1991  : avcodec_find_decoder(codec_id);
1992 
1993  switch (st->codec->codec_type) {
1994  case AVMEDIA_TYPE_VIDEO:
1995  prefix = 'v';
1996  flags |= AV_OPT_FLAG_VIDEO_PARAM;
1997  break;
1998  case AVMEDIA_TYPE_AUDIO:
1999  prefix = 'a';
2000  flags |= AV_OPT_FLAG_AUDIO_PARAM;
2001  break;
2002  case AVMEDIA_TYPE_SUBTITLE:
2003  prefix = 's';
2004  flags |= AV_OPT_FLAG_SUBTITLE_PARAM;
2005  break;
2006  }
2007 
2008  while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
2009  char *p = strchr(t->key, ':');
2010 
2011  /* check stream specification in opt name */
2012  if (p)
2013  switch (check_stream_specifier(s, st, p + 1)) {
2014  case 1: *p = 0; break;
2015  case 0: continue;
2016  default: exit_program(1);
2017  }
2018 
2019  if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
2020  !codec ||
2021  (codec->priv_class &&
2022  av_opt_find(&codec->priv_class, t->key, NULL, flags,
2024  av_dict_set(&ret, t->key, t->value, 0);
2025  else if (t->key[0] == prefix &&
2026  av_opt_find(&cc, t->key + 1, NULL, flags,
2028  av_dict_set(&ret, t->key + 1, t->value, 0);
2029 
2030  if (p)
2031  *p = ':';
2032  }
2033  return ret;
2034 }
2035 
2037  AVDictionary *codec_opts)
2038 {
2039  int i;
2040  AVDictionary **opts;
2041 
2042  if (!s->nb_streams)
2043  return NULL;
2044  opts = av_mallocz_array(s->nb_streams, sizeof(*opts));
2045  if (!opts) {
2047  "Could not alloc memory for stream options.\n");
2048  return NULL;
2049  }
2050  for (i = 0; i < s->nb_streams; i++)
2051  opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id,
2052  s, s->streams[i], NULL);
2053  return opts;
2054 }
2055 
2056 void *grow_array(void *array, int elem_size, int *size, int new_size)
2057 {
2058  if (new_size >= INT_MAX / elem_size) {
2059  av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
2060  exit_program(1);
2061  }
2062  if (*size < new_size) {
2063  uint8_t *tmp = av_realloc_array(array, new_size, elem_size);
2064  if (!tmp) {
2065  av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
2066  exit_program(1);
2067  }
2068  memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
2069  *size = new_size;
2070  return tmp;
2071  }
2072  return array;
2073 }
2074 
2076 {
2077  AVDictionaryEntry *rotate_tag = av_dict_get(st->metadata, "rotate", NULL, 0);
2078  uint8_t* displaymatrix = av_stream_get_side_data(st,
2080  double theta = 0;
2081 
2082  if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
2083  char *tail;
2084  theta = av_strtod(rotate_tag->value, &tail);
2085  if (*tail)
2086  theta = 0;
2087  }
2088  if (displaymatrix && !theta)
2089  theta = -av_display_rotation_get((int32_t*) displaymatrix);
2090 
2091  theta -= 360*floor(theta/360 + 0.9/360);
2092 
2093  if (fabs(theta - 90*round(theta/90)) > 2)
2094  av_log(NULL, AV_LOG_WARNING, "Odd rotation angle.\n"
2095  "If you want to help, upload a sample "
2096  "of this file to ftp://upload.ffmpeg.org/incoming/ "
2097  "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)");
2098 
2099  return theta;
2100 }
2101 
2102 #if CONFIG_AVDEVICE
2103 static int print_device_sources(AVInputFormat *fmt, AVDictionary *opts)
2104 {
2105  int ret, i;
2106  AVDeviceInfoList *device_list = NULL;
2107 
2108  if (!fmt || !fmt->priv_class || !AV_IS_INPUT_DEVICE(fmt->priv_class->category))
2109  return AVERROR(EINVAL);
2110 
2111  printf("Audo-detected sources for %s:\n", fmt->name);
2112  if (!fmt->get_device_list) {
2113  ret = AVERROR(ENOSYS);
2114  printf("Cannot list sources. Not implemented.\n");
2115  goto fail;
2116  }
2117 
2118  if ((ret = avdevice_list_input_sources(fmt, NULL, opts, &device_list)) < 0) {
2119  printf("Cannot list sources.\n");
2120  goto fail;
2121  }
2122 
2123  for (i = 0; i < device_list->nb_devices; i++) {
2124  printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2125  device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2126  }
2127 
2128  fail:
2129  avdevice_free_list_devices(&device_list);
2130  return ret;
2131 }
2132 
2133 static int print_device_sinks(AVOutputFormat *fmt, AVDictionary *opts)
2134 {
2135  int ret, i;
2136  AVDeviceInfoList *device_list = NULL;
2137 
2138  if (!fmt || !fmt->priv_class || !AV_IS_OUTPUT_DEVICE(fmt->priv_class->category))
2139  return AVERROR(EINVAL);
2140 
2141  printf("Audo-detected sinks for %s:\n", fmt->name);
2142  if (!fmt->get_device_list) {
2143  ret = AVERROR(ENOSYS);
2144  printf("Cannot list sinks. Not implemented.\n");
2145  goto fail;
2146  }
2147 
2148  if ((ret = avdevice_list_output_sinks(fmt, NULL, opts, &device_list)) < 0) {
2149  printf("Cannot list sinks.\n");
2150  goto fail;
2151  }
2152 
2153  for (i = 0; i < device_list->nb_devices; i++) {
2154  printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2155  device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2156  }
2157 
2158  fail:
2159  avdevice_free_list_devices(&device_list);
2160  return ret;
2161 }
2162 
2163 static int show_sinks_sources_parse_arg(const char *arg, char **dev, AVDictionary **opts)
2164 {
2165  int ret;
2166  if (arg) {
2167  char *opts_str = NULL;
2168  av_assert0(dev && opts);
2169  *dev = av_strdup(arg);
2170  if (!*dev)
2171  return AVERROR(ENOMEM);
2172  if ((opts_str = strchr(*dev, ','))) {
2173  *(opts_str++) = '\0';
2174  if (opts_str[0] && ((ret = av_dict_parse_string(opts, opts_str, "=", ":", 0)) < 0)) {
2175  av_freep(dev);
2176  return ret;
2177  }
2178  }
2179  } else
2180  printf("\nDevice name is not provided.\n"
2181  "You can pass devicename[,opt1=val1[,opt2=val2...]] as an argument.\n\n");
2182  return 0;
2183 }
2184 
2185 int show_sources(void *optctx, const char *opt, const char *arg)
2186 {
2187  AVInputFormat *fmt = NULL;
2188  char *dev = NULL;
2189  AVDictionary *opts = NULL;
2190  int ret = 0;
2191  int error_level = av_log_get_level();
2192 
2194 
2195  if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2196  goto fail;
2197 
2198  do {
2199  fmt = av_input_audio_device_next(fmt);
2200  if (fmt) {
2201  if (!strcmp(fmt->name, "lavfi"))
2202  continue; //it's pointless to probe lavfi
2203  if (dev && !av_match_name(dev, fmt->name))
2204  continue;
2205  print_device_sources(fmt, opts);
2206  }
2207  } while (fmt);
2208  do {
2209  fmt = av_input_video_device_next(fmt);
2210  if (fmt) {
2211  if (dev && !av_match_name(dev, fmt->name))
2212  continue;
2213  print_device_sources(fmt, opts);
2214  }
2215  } while (fmt);
2216  fail:
2217  av_dict_free(&opts);
2218  av_free(dev);
2219  av_log_set_level(error_level);
2220  return ret;
2221 }
2222 
2223 int show_sinks(void *optctx, const char *opt, const char *arg)
2224 {
2225  AVOutputFormat *fmt = NULL;
2226  char *dev = NULL;
2227  AVDictionary *opts = NULL;
2228  int ret = 0;
2229  int error_level = av_log_get_level();
2230 
2232 
2233  if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2234  goto fail;
2235 
2236  do {
2237  fmt = av_output_audio_device_next(fmt);
2238  if (fmt) {
2239  if (dev && !av_match_name(dev, fmt->name))
2240  continue;
2241  print_device_sinks(fmt, opts);
2242  }
2243  } while (fmt);
2244  do {
2245  fmt = av_output_video_device_next(fmt);
2246  if (fmt) {
2247  if (dev && !av_match_name(dev, fmt->name))
2248  continue;
2249  print_device_sinks(fmt, opts);
2250  }
2251  } while (fmt);
2252  fail:
2253  av_dict_free(&opts);
2254  av_free(dev);
2255  av_log_set_level(error_level);
2256  return ret;
2257 }
2258 
2259 #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:110
int parse_optgroup(void *optctx, OptionGroup *g)
Parse an options group and write results into optctx.
Definition: cmdutils.c:405
#define NULL
Definition: coverity.c:32
#define AV_CODEC_PROP_INTRA_ONLY
Codec uses only intra compression.
Definition: avcodec.h:693
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:1565
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: utils.c:3043
const char * name
< group name
Definition: cmdutils.h:262
static void finish_group(OptionParseContext *octx, int group_idx, const char *arg)
Definition: cmdutils.c:653
#define FLAGS
Definition: cmdutils.c:535
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:245
int show_license(void *optctx, const char *opt, const char *arg)
Print the license of the program to stdout.
Definition: cmdutils.c:1170
#define AV_CODEC_PROP_LOSSY
Codec supports lossy compression.
Definition: avcodec.h:699
#define AV_OPT_FLAG_SUBTITLE_PARAM
Definition: opt.h:282
double get_rotation(AVStream *st)
Definition: cmdutils.c:2075
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:89
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:744
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:2215
const AVClass * av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
Iterate over potential AVOptions-enabled children of parent.
Definition: opt.c:1624
int opt_loglevel(void *optctx, const char *opt, const char *arg)
Set the libav* libraries log level.
Definition: cmdutils.c:862
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:1971
#define INDENT
Definition: cmdutils.c:1055
#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:1030
char * device_name
device name, format depends on device
Definition: avdevice.h:454
int num
Numerator.
Definition: rational.h:59
#define AV_OPT_FLAG_AUDIO_PARAM
Definition: opt.h:280
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:1142
static int is_device(const AVClass *avclass)
Definition: cmdutils.c:1244
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:1588
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:589
static const AVOption * opt_find(void *obj, const char *name, const char *unit, int opt_flags, int search_flags)
Definition: cmdutils.c:526
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: avcodec.h:1013
enum AVMediaType type
Definition: avcodec.h:3586
#define AV_CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
Definition: avcodec.h:1017
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:1311
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:1306
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:1033
#define OPT_DOUBLE
Definition: cmdutils.h:185
static void check_options(const OptionDef *po)
Definition: cmdutils.c:488
#define OPT_FLOAT
Definition: cmdutils.h:173
AVCodec.
Definition: avcodec.h:3573
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:1663
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:1979
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:718
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:2981
Format I/O context.
Definition: avformat.h:1327
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
#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:983
static int warned_cfg
Definition: cmdutils.c:1053
#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:1472
supported_samplerates
Public dictionary API.
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:97
static void dump_argument(const char *a)
Definition: cmdutils.c:464
void register_exit(void(*cb)(int ret))
Register a program-specific cleanup routine.
Definition: cmdutils.c:121
void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
Trivial log callback.
Definition: cmdutils.c:89
uint8_t
av_cold struct SwrContext * swr_alloc(void)
Allocate SwrContext.
Definition: options.c:149
Opaque data information usually continuous.
Definition: avutil.h:197
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:536
#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:3044
static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
Definition: cmdutils.c:1439
AVS_FilterInfo AVS_Value child
Definition: avisynth_c.h:731
#define AV_CODEC_PROP_LOSSLESS
Codec supports lossless compression.
Definition: avcodec.h:703
int opt_max_alloc(void *optctx, const char *opt, const char *arg)
Definition: cmdutils.c:1016
#define media_type_string
Definition: cmdutils.h:570
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: avcodec.h:1414
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:4724
#define OPT_OFFSET
Definition: cmdutils.h:180
static void init_parse_context(OptionParseContext *octx, const OptionGroupDef *groups, int nb_groups)
Definition: cmdutils.c:696
#define AV_IS_INPUT_DEVICE(category)
Definition: log.h:50
int show_buildconf(void *optctx, const char *opt, const char *arg)
Print the build configuration of the program to stdout.
Definition: cmdutils.c:1162
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
Definition: utils.c:5021
void init_opts(void)
Initialize the cmdutils option system, in particular allocate the *_opts contexts.
Definition: cmdutils.c:75
int hide_banner
Definition: cmdutils.c:73
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:1395
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:5755
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:687
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:374
#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:1089
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
const AVClass * avformat_get_class(void)
Get the AVClass for AVFormatContext.
Definition: options.c:155
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:497
#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:167
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:3969
static void print_codecs(int encoder)
Definition: cmdutils.c:1527
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:438
#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:275
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1346
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:2036
AVCodec * avcodec_find_encoder_by_name(const char *name)
Find a registered encoder with the specified name.
Definition: utils.c:3048
AVDictionary * format_opts
Definition: cmdutils.c:69
int show_help(void *optctx, const char *opt, const char *arg)
Generic -h handler common to all fftools.
Definition: cmdutils.c:1876
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:302
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:3587
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
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:292
#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:95
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:1725
#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:3592
#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
const char * arg
Definition: jacosubdec.c:66
#define SHOW_COPYRIGHT
Definition: cmdutils.c:1058
static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only)
Definition: cmdutils.c:1251
const char * name
Definition: cmdutils.h:164
static void show_help_muxer(const char *name)
Definition: cmdutils.c:1787
int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options)
Parse one given option.
Definition: cmdutils.c:341
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:1316
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:3580
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:671
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 * 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:1603
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:82
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1021
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:181
#define AV_CODEC_CAP_VARIABLE_FRAME_SIZE
Audio encoder supports receiving a different number of samples in each call.
Definition: avcodec.h:1037
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:2971
AVDictionary * sws_dict
Definition: cmdutils.c:67
static const OptionDef * find_option(const OptionDef *po, const char *name)
Definition: cmdutils.c:208
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:1011
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: avcodec.h:675
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:1566
#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:1383
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:2282
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:952
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:1649
static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
Definition: cmdutils.c:94
#define AV_CODEC_CAP_SMALL_LAST_FRAME
Codec can be fed a final frame with a smaller size.
Definition: avcodec.h:988
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:556
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:1577
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
static void print_codecs_for_id(enum AVCodecID id, int encoder)
Definition: cmdutils.c:1460
static int init_report(const char *env)
Definition: cmdutils.c:940
const char * name
Definition: avformat.h:524
#define GET_PIX_FMT_NAME(pix_fmt)
Definition: cmdutils.h:575
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:2274
void show_help_default(const char *opt, const char *arg)
Per-fftool specific help handler.
Definition: ffmpeg_opt.c:2963
AVDictionary * resample_opts
Definition: cmdutils.c:69
#define OPT_INT64
Definition: cmdutils.h:175
AVDictionary * metadata
Definition: avformat.h:947
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:199
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:1030
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:2990
#define GET_SAMPLE_FMT_NAME(sample_fmt)
Definition: cmdutils.h:578
#define FF_ARRAY_ELEMS(a)
int flags
Definition: opt.h:274
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:126
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:669
#define INFINITY
Definition: math.h:27
Stream structure.
Definition: avformat.h:878
static char get_media_type_char(enum AVMediaType type)
Definition: cmdutils.c:1407
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1025
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:581
external API header
const char * long_name
Descriptive name for the codec, meant to be more human readable than name.
Definition: avcodec.h:3585
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:1419
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:3593
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:1252
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:281
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
Definition: utils.c:3062
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:1056
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:1921
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:1060
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:1008
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:912
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:276
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:155
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:2056
const char * argname
Definition: cmdutils.h:194
#define OPT_STRING
Definition: cmdutils.h:169
AVMediaType
Definition: avutil.h:193
const char * name
Filter name.
Definition: avfilter.h:148
const char * name
Name of the codec described by this descriptor.
Definition: avcodec.h:667
#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:1025
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:76
static void print_codec(const AVCodec *c)
Definition: cmdutils.c:1329
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:1061
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:659
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:134
#define AV_CODEC_CAP_TRUNCATED
Definition: avcodec.h:959
#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:3067
static int flags
Definition: cpu.c:47
const AVClass * priv_class
AVClass for the private context.
Definition: avcodec.h:3599
uint8_t level
Definition: svq3.c:206
static int match_group_separator(const OptionGroupDef *groups, int nb_groups, const char *opt)
Definition: cmdutils.c:633
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:661
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:752
const char * extensions
If extensions are defined, then no probe is done.
Definition: avformat.h:683
#define OPT_BOOL
Definition: cmdutils.h:167
An option extracted from the commandline.
Definition: cmdutils.h:254
static FILE * report_file
Definition: cmdutils.c:71
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:1043
#define OPT_INT
Definition: cmdutils.h:172
AVDictionary * codec_opts
Definition: cmdutils.c:69
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:1029
#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 double c[64]
static void(* program_exit)(int ret)
Definition: cmdutils.c:119
OptionGroup global_opts
Definition: cmdutils.h:301
static void print_buildconf(int flags, int level)
Definition: cmdutils.c:1116
attribute_deprecated AVBitStreamFilter * av_bitstream_filter_next(const AVBitStreamFilter *f)
If f is NULL, return the first registered bitstream filter, if f is non-NULL, return the next registe...
#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:565
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:80
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:660
#define GROW_ARRAY(array, nb_elems)
Definition: cmdutils.h:572
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:72
#define SHOW_CONFIG
Definition: cmdutils.c:1057
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:1442
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:280
int(* get_device_list)(struct AVFormatContext *s, struct AVDeviceInfoList *device_list)
Returns device list with it properties.
Definition: avformat.h:788
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:286
void av_log_set_flags(int arg)
Definition: log.c:396
AVDictionary * swr_opts
Definition: cmdutils.c:68
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:196
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:1696
#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:850
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:1910
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:662
#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:1769
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
int show_version(void *optctx, const char *opt, const char *arg)
Print the version of the program to stdout.
Definition: cmdutils.c:1153
void av_force_cpu_flags(int arg)
Disables cpu detection and forces the specified flags.
Definition: cpu.c:49
#define OPT_PERFILE
Definition: cmdutils.h: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:1102
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:431
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:958
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:1734
static int compare_codec_desc(const void *a, const void *b)
Definition: cmdutils.c:1430
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:1571
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:2270
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:684
void av_bprint_chars(AVBPrint *buf, char c, unsigned n)
Append char c n times to a print buffer.
Definition: bprint.c:140