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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 #ifdef _WIN32
65 #include <windows.h>
66 #endif
67 
68 static int init_report(const char *env);
69 
73 
74 static FILE *report_file;
76 int hide_banner = 0;
77 
78 void init_opts(void)
79 {
80  av_dict_set(&sws_dict, "flags", "bicubic", 0);
81 }
82 
83 void uninit_opts(void)
84 {
85  av_dict_free(&swr_opts);
86  av_dict_free(&sws_dict);
87  av_dict_free(&format_opts);
88  av_dict_free(&codec_opts);
89  av_dict_free(&resample_opts);
90 }
91 
92 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
93 {
94  vfprintf(stdout, fmt, vl);
95 }
96 
97 static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
98 {
99  va_list vl2;
100  char line[1024];
101  static int print_prefix = 1;
102 
103  va_copy(vl2, vl);
104  av_log_default_callback(ptr, level, fmt, vl);
105  av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
106  va_end(vl2);
107  if (report_file_level >= level) {
108  fputs(line, report_file);
109  fflush(report_file);
110  }
111 }
112 
113 void init_dynload(void)
114 {
115 #ifdef _WIN32
116  /* Calling SetDllDirectory with the empty string (but not NULL) removes the
117  * current working directory from the DLL search path as a security pre-caution. */
118  SetDllDirectory("");
119 #endif
120 }
121 
122 static void (*program_exit)(int ret);
123 
124 void register_exit(void (*cb)(int ret))
125 {
126  program_exit = cb;
127 }
128 
129 void exit_program(int ret)
130 {
131  if (program_exit)
132  program_exit(ret);
133 
134  exit(ret);
135 }
136 
137 double parse_number_or_die(const char *context, const char *numstr, int type,
138  double min, double max)
139 {
140  char *tail;
141  const char *error;
142  double d = av_strtod(numstr, &tail);
143  if (*tail)
144  error = "Expected number for %s but found: %s\n";
145  else if (d < min || d > max)
146  error = "The value for %s was %s which is not within %f - %f\n";
147  else if (type == OPT_INT64 && (int64_t)d != d)
148  error = "Expected int64 for %s but found %s\n";
149  else if (type == OPT_INT && (int)d != d)
150  error = "Expected int for %s but found %s\n";
151  else
152  return d;
153  av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
154  exit_program(1);
155  return 0;
156 }
157 
158 int64_t parse_time_or_die(const char *context, const char *timestr,
159  int is_duration)
160 {
161  int64_t us;
162  if (av_parse_time(&us, timestr, is_duration) < 0) {
163  av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
164  is_duration ? "duration" : "date", context, timestr);
165  exit_program(1);
166  }
167  return us;
168 }
169 
170 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
171  int rej_flags, int alt_flags)
172 {
173  const OptionDef *po;
174  int first;
175 
176  first = 1;
177  for (po = options; po->name; po++) {
178  char buf[64];
179 
180  if (((po->flags & req_flags) != req_flags) ||
181  (alt_flags && !(po->flags & alt_flags)) ||
182  (po->flags & rej_flags))
183  continue;
184 
185  if (first) {
186  printf("%s\n", msg);
187  first = 0;
188  }
189  av_strlcpy(buf, po->name, sizeof(buf));
190  if (po->argname) {
191  av_strlcat(buf, " ", sizeof(buf));
192  av_strlcat(buf, po->argname, sizeof(buf));
193  }
194  printf("-%-17s %s\n", buf, po->help);
195  }
196  printf("\n");
197 }
198 
199 void show_help_children(const AVClass *class, int flags)
200 {
201  const AVClass *child = NULL;
202  if (class->option) {
203  av_opt_show2(&class, NULL, flags, 0);
204  printf("\n");
205  }
206 
207  while (child = av_opt_child_class_next(class, child))
208  show_help_children(child, flags);
209 }
210 
211 static const OptionDef *find_option(const OptionDef *po, const char *name)
212 {
213  const char *p = strchr(name, ':');
214  int len = p ? p - name : strlen(name);
215 
216  while (po->name) {
217  if (!strncmp(name, po->name, len) && strlen(po->name) == len)
218  break;
219  po++;
220  }
221  return po;
222 }
223 
224 /* _WIN32 means using the windows libc - cygwin doesn't define that
225  * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
226  * it doesn't provide the actual command line via GetCommandLineW(). */
227 #if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
228 #include <windows.h>
229 #include <shellapi.h>
230 /* Will be leaked on exit */
231 static char** win32_argv_utf8 = NULL;
232 static int win32_argc = 0;
233 
234 /**
235  * Prepare command line arguments for executable.
236  * For Windows - perform wide-char to UTF-8 conversion.
237  * Input arguments should be main() function arguments.
238  * @param argc_ptr Arguments number (including executable)
239  * @param argv_ptr Arguments list.
240  */
241 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
242 {
243  char *argstr_flat;
244  wchar_t **argv_w;
245  int i, buffsize = 0, offset = 0;
246 
247  if (win32_argv_utf8) {
248  *argc_ptr = win32_argc;
249  *argv_ptr = win32_argv_utf8;
250  return;
251  }
252 
253  win32_argc = 0;
254  argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
255  if (win32_argc <= 0 || !argv_w)
256  return;
257 
258  /* determine the UTF-8 buffer size (including NULL-termination symbols) */
259  for (i = 0; i < win32_argc; i++)
260  buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
261  NULL, 0, NULL, NULL);
262 
263  win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
264  argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
265  if (!win32_argv_utf8) {
266  LocalFree(argv_w);
267  return;
268  }
269 
270  for (i = 0; i < win32_argc; i++) {
271  win32_argv_utf8[i] = &argstr_flat[offset];
272  offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
273  &argstr_flat[offset],
274  buffsize - offset, NULL, NULL);
275  }
276  win32_argv_utf8[i] = NULL;
277  LocalFree(argv_w);
278 
279  *argc_ptr = win32_argc;
280  *argv_ptr = win32_argv_utf8;
281 }
282 #else
283 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
284 {
285  /* nothing to do */
286 }
287 #endif /* HAVE_COMMANDLINETOARGVW */
288 
289 static int write_option(void *optctx, const OptionDef *po, const char *opt,
290  const char *arg)
291 {
292  /* new-style options contain an offset into optctx, old-style address of
293  * a global var*/
294  void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
295  (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
296  int *dstcount;
297 
298  if (po->flags & OPT_SPEC) {
299  SpecifierOpt **so = dst;
300  char *p = strchr(opt, ':');
301  char *str;
302 
303  dstcount = (int *)(so + 1);
304  *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
305  str = av_strdup(p ? p + 1 : "");
306  if (!str)
307  return AVERROR(ENOMEM);
308  (*so)[*dstcount - 1].specifier = str;
309  dst = &(*so)[*dstcount - 1].u;
310  }
311 
312  if (po->flags & OPT_STRING) {
313  char *str;
314  str = av_strdup(arg);
315  av_freep(dst);
316  if (!str)
317  return AVERROR(ENOMEM);
318  *(char **)dst = str;
319  } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
320  *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
321  } else if (po->flags & OPT_INT64) {
322  *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
323  } else if (po->flags & OPT_TIME) {
324  *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
325  } else if (po->flags & OPT_FLOAT) {
326  *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
327  } else if (po->flags & OPT_DOUBLE) {
328  *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
329  } else if (po->u.func_arg) {
330  int ret = po->u.func_arg(optctx, opt, arg);
331  if (ret < 0) {
333  "Failed to set value '%s' for option '%s': %s\n",
334  arg, opt, av_err2str(ret));
335  return ret;
336  }
337  }
338  if (po->flags & OPT_EXIT)
339  exit_program(0);
340 
341  return 0;
342 }
343 
344 int parse_option(void *optctx, const char *opt, const char *arg,
345  const OptionDef *options)
346 {
347  const OptionDef *po;
348  int ret;
349 
350  po = find_option(options, opt);
351  if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
352  /* handle 'no' bool option */
353  po = find_option(options, opt + 2);
354  if ((po->name && (po->flags & OPT_BOOL)))
355  arg = "0";
356  } else if (po->flags & OPT_BOOL)
357  arg = "1";
358 
359  if (!po->name)
360  po = find_option(options, "default");
361  if (!po->name) {
362  av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
363  return AVERROR(EINVAL);
364  }
365  if (po->flags & HAS_ARG && !arg) {
366  av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
367  return AVERROR(EINVAL);
368  }
369 
370  ret = write_option(optctx, po, opt, arg);
371  if (ret < 0)
372  return ret;
373 
374  return !!(po->flags & HAS_ARG);
375 }
376 
377 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
378  void (*parse_arg_function)(void *, const char*))
379 {
380  const char *opt;
381  int optindex, handleoptions = 1, ret;
382 
383  /* perform system-dependent conversions for arguments list */
384  prepare_app_arguments(&argc, &argv);
385 
386  /* parse options */
387  optindex = 1;
388  while (optindex < argc) {
389  opt = argv[optindex++];
390 
391  if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
392  if (opt[1] == '-' && opt[2] == '\0') {
393  handleoptions = 0;
394  continue;
395  }
396  opt++;
397 
398  if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
399  exit_program(1);
400  optindex += ret;
401  } else {
402  if (parse_arg_function)
403  parse_arg_function(optctx, opt);
404  }
405  }
406 }
407 
408 int parse_optgroup(void *optctx, OptionGroup *g)
409 {
410  int i, ret;
411 
412  av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
413  g->group_def->name, g->arg);
414 
415  for (i = 0; i < g->nb_opts; i++) {
416  Option *o = &g->opts[i];
417 
418  if (g->group_def->flags &&
419  !(g->group_def->flags & o->opt->flags)) {
420  av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
421  "%s %s -- you are trying to apply an input option to an "
422  "output file or vice versa. Move this option before the "
423  "file it belongs to.\n", o->key, o->opt->help,
424  g->group_def->name, g->arg);
425  return AVERROR(EINVAL);
426  }
427 
428  av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
429  o->key, o->opt->help, o->val);
430 
431  ret = write_option(optctx, o->opt, o->key, o->val);
432  if (ret < 0)
433  return ret;
434  }
435 
436  av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
437 
438  return 0;
439 }
440 
441 int locate_option(int argc, char **argv, const OptionDef *options,
442  const char *optname)
443 {
444  const OptionDef *po;
445  int i;
446 
447  for (i = 1; i < argc; i++) {
448  const char *cur_opt = argv[i];
449 
450  if (*cur_opt++ != '-')
451  continue;
452 
453  po = find_option(options, cur_opt);
454  if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
455  po = find_option(options, cur_opt + 2);
456 
457  if ((!po->name && !strcmp(cur_opt, optname)) ||
458  (po->name && !strcmp(optname, po->name)))
459  return i;
460 
461  if (!po->name || po->flags & HAS_ARG)
462  i++;
463  }
464  return 0;
465 }
466 
467 static void dump_argument(const char *a)
468 {
469  const unsigned char *p;
470 
471  for (p = a; *p; p++)
472  if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
473  *p == '_' || (*p >= 'a' && *p <= 'z')))
474  break;
475  if (!*p) {
476  fputs(a, report_file);
477  return;
478  }
479  fputc('"', report_file);
480  for (p = a; *p; p++) {
481  if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
482  fprintf(report_file, "\\%c", *p);
483  else if (*p < ' ' || *p > '~')
484  fprintf(report_file, "\\x%02x", *p);
485  else
486  fputc(*p, report_file);
487  }
488  fputc('"', report_file);
489 }
490 
491 static void check_options(const OptionDef *po)
492 {
493  while (po->name) {
494  if (po->flags & OPT_PERFILE)
496  po++;
497  }
498 }
499 
500 void parse_loglevel(int argc, char **argv, const OptionDef *options)
501 {
502  int idx = locate_option(argc, argv, options, "loglevel");
503  const char *env;
504 
505  check_options(options);
506 
507  if (!idx)
508  idx = locate_option(argc, argv, options, "v");
509  if (idx && argv[idx + 1])
510  opt_loglevel(NULL, "loglevel", argv[idx + 1]);
511  idx = locate_option(argc, argv, options, "report");
512  if ((env = getenv("FFREPORT")) || idx) {
513  init_report(env);
514  if (report_file) {
515  int i;
516  fprintf(report_file, "Command line:\n");
517  for (i = 0; i < argc; i++) {
518  dump_argument(argv[i]);
519  fputc(i < argc - 1 ? ' ' : '\n', report_file);
520  }
521  fflush(report_file);
522  }
523  }
524  idx = locate_option(argc, argv, options, "hide_banner");
525  if (idx)
526  hide_banner = 1;
527 }
528 
529 static const AVOption *opt_find(void *obj, const char *name, const char *unit,
530  int opt_flags, int search_flags)
531 {
532  const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
533  if(o && !o->flags)
534  return NULL;
535  return o;
536 }
537 
538 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS && (arg[0]=='-' || arg[0]=='+')) ? AV_DICT_APPEND : 0
539 int opt_default(void *optctx, const char *opt, const char *arg)
540 {
541  const AVOption *o;
542  int consumed = 0;
543  char opt_stripped[128];
544  const char *p;
545  const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
546 #if CONFIG_AVRESAMPLE
547  const AVClass *rc = avresample_get_class();
548 #endif
549 #if CONFIG_SWSCALE
550  const AVClass *sc = sws_get_class();
551 #endif
552 #if CONFIG_SWRESAMPLE
553  const AVClass *swr_class = swr_get_class();
554 #endif
555 
556  if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
558 
559  if (!(p = strchr(opt, ':')))
560  p = opt + strlen(opt);
561  av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
562 
563  if ((o = opt_find(&cc, opt_stripped, NULL, 0,
565  ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
566  (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
567  av_dict_set(&codec_opts, opt, arg, FLAGS);
568  consumed = 1;
569  }
570  if ((o = opt_find(&fc, opt, NULL, 0,
572  av_dict_set(&format_opts, opt, arg, FLAGS);
573  if (consumed)
574  av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
575  consumed = 1;
576  }
577 #if CONFIG_SWSCALE
578  if (!consumed && (o = opt_find(&sc, opt, NULL, 0,
580  struct SwsContext *sws = sws_alloc_context();
581  int ret = av_opt_set(sws, opt, arg, 0);
582  sws_freeContext(sws);
583  if (!strcmp(opt, "srcw") || !strcmp(opt, "srch") ||
584  !strcmp(opt, "dstw") || !strcmp(opt, "dsth") ||
585  !strcmp(opt, "src_format") || !strcmp(opt, "dst_format")) {
586  av_log(NULL, AV_LOG_ERROR, "Directly using swscale dimensions/format options is not supported, please use the -s or -pix_fmt options\n");
587  return AVERROR(EINVAL);
588  }
589  if (ret < 0) {
590  av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
591  return ret;
592  }
593 
594  av_dict_set(&sws_dict, opt, arg, FLAGS);
595 
596  consumed = 1;
597  }
598 #else
599  if (!consumed && !strcmp(opt, "sws_flags")) {
600  av_log(NULL, AV_LOG_WARNING, "Ignoring %s %s, due to disabled swscale\n", opt, arg);
601  consumed = 1;
602  }
603 #endif
604 #if CONFIG_SWRESAMPLE
605  if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
607  struct SwrContext *swr = swr_alloc();
608  int ret = av_opt_set(swr, opt, arg, 0);
609  swr_free(&swr);
610  if (ret < 0) {
611  av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
612  return ret;
613  }
614  av_dict_set(&swr_opts, opt, arg, FLAGS);
615  consumed = 1;
616  }
617 #endif
618 #if CONFIG_AVRESAMPLE
619  if ((o=opt_find(&rc, opt, NULL, 0,
621  av_dict_set(&resample_opts, opt, arg, FLAGS);
622  consumed = 1;
623  }
624 #endif
625 
626  if (consumed)
627  return 0;
629 }
630 
631 /*
632  * Check whether given option is a group separator.
633  *
634  * @return index of the group definition that matched or -1 if none
635  */
636 static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
637  const char *opt)
638 {
639  int i;
640 
641  for (i = 0; i < nb_groups; i++) {
642  const OptionGroupDef *p = &groups[i];
643  if (p->sep && !strcmp(p->sep, opt))
644  return i;
645  }
646 
647  return -1;
648 }
649 
650 /*
651  * Finish parsing an option group.
652  *
653  * @param group_idx which group definition should this group belong to
654  * @param arg argument of the group delimiting option
655  */
656 static void finish_group(OptionParseContext *octx, int group_idx,
657  const char *arg)
658 {
659  OptionGroupList *l = &octx->groups[group_idx];
660  OptionGroup *g;
661 
662  GROW_ARRAY(l->groups, l->nb_groups);
663  g = &l->groups[l->nb_groups - 1];
664 
665  *g = octx->cur_group;
666  g->arg = arg;
667  g->group_def = l->group_def;
668  g->sws_dict = sws_dict;
669  g->swr_opts = swr_opts;
670  g->codec_opts = codec_opts;
673 
674  codec_opts = NULL;
675  format_opts = NULL;
676  resample_opts = NULL;
677  sws_dict = NULL;
678  swr_opts = NULL;
679  init_opts();
680 
681  memset(&octx->cur_group, 0, sizeof(octx->cur_group));
682 }
683 
684 /*
685  * Add an option instance to currently parsed group.
686  */
687 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
688  const char *key, const char *val)
689 {
690  int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
691  OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
692 
693  GROW_ARRAY(g->opts, g->nb_opts);
694  g->opts[g->nb_opts - 1].opt = opt;
695  g->opts[g->nb_opts - 1].key = key;
696  g->opts[g->nb_opts - 1].val = val;
697 }
698 
700  const OptionGroupDef *groups, int nb_groups)
701 {
702  static const OptionGroupDef global_group = { "global" };
703  int i;
704 
705  memset(octx, 0, sizeof(*octx));
706 
707  octx->nb_groups = nb_groups;
708  octx->groups = av_mallocz_array(octx->nb_groups, sizeof(*octx->groups));
709  if (!octx->groups)
710  exit_program(1);
711 
712  for (i = 0; i < octx->nb_groups; i++)
713  octx->groups[i].group_def = &groups[i];
714 
715  octx->global_opts.group_def = &global_group;
716  octx->global_opts.arg = "";
717 
718  init_opts();
719 }
720 
722 {
723  int i, j;
724 
725  for (i = 0; i < octx->nb_groups; i++) {
726  OptionGroupList *l = &octx->groups[i];
727 
728  for (j = 0; j < l->nb_groups; j++) {
729  av_freep(&l->groups[j].opts);
733 
734  av_dict_free(&l->groups[j].sws_dict);
735  av_dict_free(&l->groups[j].swr_opts);
736  }
737  av_freep(&l->groups);
738  }
739  av_freep(&octx->groups);
740 
741  av_freep(&octx->cur_group.opts);
742  av_freep(&octx->global_opts.opts);
743 
744  uninit_opts();
745 }
746 
747 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
748  const OptionDef *options,
749  const OptionGroupDef *groups, int nb_groups)
750 {
751  int optindex = 1;
752  int dashdash = -2;
753 
754  /* perform system-dependent conversions for arguments list */
755  prepare_app_arguments(&argc, &argv);
756 
757  init_parse_context(octx, groups, nb_groups);
758  av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
759 
760  while (optindex < argc) {
761  const char *opt = argv[optindex++], *arg;
762  const OptionDef *po;
763  int ret;
764 
765  av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
766 
767  if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
768  dashdash = optindex;
769  continue;
770  }
771  /* unnamed group separators, e.g. output filename */
772  if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
773  finish_group(octx, 0, opt);
774  av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
775  continue;
776  }
777  opt++;
778 
779 #define GET_ARG(arg) \
780 do { \
781  arg = argv[optindex++]; \
782  if (!arg) { \
783  av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
784  return AVERROR(EINVAL); \
785  } \
786 } while (0)
787 
788  /* named group separators, e.g. -i */
789  if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
790  GET_ARG(arg);
791  finish_group(octx, ret, arg);
792  av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
793  groups[ret].name, arg);
794  continue;
795  }
796 
797  /* normal options */
798  po = find_option(options, opt);
799  if (po->name) {
800  if (po->flags & OPT_EXIT) {
801  /* optional argument, e.g. -h */
802  arg = argv[optindex++];
803  } else if (po->flags & HAS_ARG) {
804  GET_ARG(arg);
805  } else {
806  arg = "1";
807  }
808 
809  add_opt(octx, po, opt, arg);
810  av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
811  "argument '%s'.\n", po->name, po->help, arg);
812  continue;
813  }
814 
815  /* AVOptions */
816  if (argv[optindex]) {
817  ret = opt_default(NULL, opt, argv[optindex]);
818  if (ret >= 0) {
819  av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
820  "argument '%s'.\n", opt, argv[optindex]);
821  optindex++;
822  continue;
823  } else if (ret != AVERROR_OPTION_NOT_FOUND) {
824  av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
825  "with argument '%s'.\n", opt, argv[optindex]);
826  return ret;
827  }
828  }
829 
830  /* boolean -nofoo options */
831  if (opt[0] == 'n' && opt[1] == 'o' &&
832  (po = find_option(options, opt + 2)) &&
833  po->name && po->flags & OPT_BOOL) {
834  add_opt(octx, po, opt, "0");
835  av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
836  "argument 0.\n", po->name, po->help);
837  continue;
838  }
839 
840  av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
842  }
843 
844  if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
845  av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
846  "commandline.\n");
847 
848  av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
849 
850  return 0;
851 }
852 
853 int opt_cpuflags(void *optctx, const char *opt, const char *arg)
854 {
855  int ret;
856  unsigned flags = av_get_cpu_flags();
857 
858  if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
859  return ret;
860 
861  av_force_cpu_flags(flags);
862  return 0;
863 }
864 
865 int opt_loglevel(void *optctx, const char *opt, const char *arg)
866 {
867  const struct { const char *name; int level; } log_levels[] = {
868  { "quiet" , AV_LOG_QUIET },
869  { "panic" , AV_LOG_PANIC },
870  { "fatal" , AV_LOG_FATAL },
871  { "error" , AV_LOG_ERROR },
872  { "warning", AV_LOG_WARNING },
873  { "info" , AV_LOG_INFO },
874  { "verbose", AV_LOG_VERBOSE },
875  { "debug" , AV_LOG_DEBUG },
876  { "trace" , AV_LOG_TRACE },
877  };
878  char *tail;
879  int level;
880  int flags;
881  int i;
882 
883  flags = av_log_get_flags();
884  tail = strstr(arg, "repeat");
885  if (tail)
886  flags &= ~AV_LOG_SKIP_REPEATED;
887  else
888  flags |= AV_LOG_SKIP_REPEATED;
889 
890  av_log_set_flags(flags);
891  if (tail == arg)
892  arg += 6 + (arg[6]=='+');
893  if(tail && !*arg)
894  return 0;
895 
896  for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
897  if (!strcmp(log_levels[i].name, arg)) {
898  av_log_set_level(log_levels[i].level);
899  return 0;
900  }
901  }
902 
903  level = strtol(arg, &tail, 10);
904  if (*tail) {
905  av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
906  "Possible levels are numbers or:\n", arg);
907  for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
908  av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
909  exit_program(1);
910  }
911  av_log_set_level(level);
912  return 0;
913 }
914 
915 static void expand_filename_template(AVBPrint *bp, const char *template,
916  struct tm *tm)
917 {
918  int c;
919 
920  while ((c = *(template++))) {
921  if (c == '%') {
922  if (!(c = *(template++)))
923  break;
924  switch (c) {
925  case 'p':
926  av_bprintf(bp, "%s", program_name);
927  break;
928  case 't':
929  av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
930  tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
931  tm->tm_hour, tm->tm_min, tm->tm_sec);
932  break;
933  case '%':
934  av_bprint_chars(bp, c, 1);
935  break;
936  }
937  } else {
938  av_bprint_chars(bp, c, 1);
939  }
940  }
941 }
942 
943 static int init_report(const char *env)
944 {
945  char *filename_template = NULL;
946  char *key, *val;
947  int ret, count = 0;
948  time_t now;
949  struct tm *tm;
950  AVBPrint filename;
951 
952  if (report_file) /* already opened */
953  return 0;
954  time(&now);
955  tm = localtime(&now);
956 
957  while (env && *env) {
958  if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
959  if (count)
961  "Failed to parse FFREPORT environment variable: %s\n",
962  av_err2str(ret));
963  break;
964  }
965  if (*env)
966  env++;
967  count++;
968  if (!strcmp(key, "file")) {
969  av_free(filename_template);
970  filename_template = val;
971  val = NULL;
972  } else if (!strcmp(key, "level")) {
973  char *tail;
974  report_file_level = strtol(val, &tail, 10);
975  if (*tail) {
976  av_log(NULL, AV_LOG_FATAL, "Invalid report file level\n");
977  exit_program(1);
978  }
979  } else {
980  av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
981  }
982  av_free(val);
983  av_free(key);
984  }
985 
986  av_bprint_init(&filename, 0, 1);
987  expand_filename_template(&filename,
988  av_x_if_null(filename_template, "%p-%t.log"), tm);
989  av_free(filename_template);
990  if (!av_bprint_is_complete(&filename)) {
991  av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
992  return AVERROR(ENOMEM);
993  }
994 
995  report_file = fopen(filename.str, "w");
996  if (!report_file) {
997  int ret = AVERROR(errno);
998  av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
999  filename.str, strerror(errno));
1000  return ret;
1001  }
1004  "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
1005  "Report written to \"%s\"\n",
1006  program_name,
1007  tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
1008  tm->tm_hour, tm->tm_min, tm->tm_sec,
1009  filename.str);
1010  av_bprint_finalize(&filename, NULL);
1011  return 0;
1012 }
1013 
1014 int opt_report(const char *opt)
1015 {
1016  return init_report(NULL);
1017 }
1018 
1019 int opt_max_alloc(void *optctx, const char *opt, const char *arg)
1020 {
1021  char *tail;
1022  size_t max;
1023 
1024  max = strtol(arg, &tail, 10);
1025  if (*tail) {
1026  av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
1027  exit_program(1);
1028  }
1029  av_max_alloc(max);
1030  return 0;
1031 }
1032 
1033 int opt_timelimit(void *optctx, const char *opt, const char *arg)
1034 {
1035 #if HAVE_SETRLIMIT
1036  int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
1037  struct rlimit rl = { lim, lim + 1 };
1038  if (setrlimit(RLIMIT_CPU, &rl))
1039  perror("setrlimit");
1040 #else
1041  av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
1042 #endif
1043  return 0;
1044 }
1045 
1046 void print_error(const char *filename, int err)
1047 {
1048  char errbuf[128];
1049  const char *errbuf_ptr = errbuf;
1050 
1051  if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
1052  errbuf_ptr = strerror(AVUNERROR(err));
1053  av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
1054 }
1055 
1056 static int warned_cfg = 0;
1057 
1058 #define INDENT 1
1059 #define SHOW_VERSION 2
1060 #define SHOW_CONFIG 4
1061 #define SHOW_COPYRIGHT 8
1062 
1063 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
1064  if (CONFIG_##LIBNAME) { \
1065  const char *indent = flags & INDENT? " " : ""; \
1066  if (flags & SHOW_VERSION) { \
1067  unsigned int version = libname##_version(); \
1068  av_log(NULL, level, \
1069  "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n", \
1070  indent, #libname, \
1071  LIB##LIBNAME##_VERSION_MAJOR, \
1072  LIB##LIBNAME##_VERSION_MINOR, \
1073  LIB##LIBNAME##_VERSION_MICRO, \
1074  AV_VERSION_MAJOR(version), AV_VERSION_MINOR(version),\
1075  AV_VERSION_MICRO(version)); \
1076  } \
1077  if (flags & SHOW_CONFIG) { \
1078  const char *cfg = libname##_configuration(); \
1079  if (strcmp(FFMPEG_CONFIGURATION, cfg)) { \
1080  if (!warned_cfg) { \
1081  av_log(NULL, level, \
1082  "%sWARNING: library configuration mismatch\n", \
1083  indent); \
1084  warned_cfg = 1; \
1085  } \
1086  av_log(NULL, level, "%s%-11s configuration: %s\n", \
1087  indent, #libname, cfg); \
1088  } \
1089  } \
1090  } \
1091 
1092 static void print_all_libs_info(int flags, int level)
1093 {
1094  PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
1095  PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
1096  PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
1097  PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
1098  PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
1099  PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
1100  PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
1101  PRINT_LIB_INFO(swresample, SWRESAMPLE, flags, level);
1102  PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
1103 }
1104 
1105 static void print_program_info(int flags, int level)
1106 {
1107  const char *indent = flags & INDENT? " " : "";
1108 
1109  av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
1110  if (flags & SHOW_COPYRIGHT)
1111  av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
1112  program_birth_year, CONFIG_THIS_YEAR);
1113  av_log(NULL, level, "\n");
1114  av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
1115 
1116  av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
1117 }
1118 
1119 static void print_buildconf(int flags, int level)
1120 {
1121  const char *indent = flags & INDENT ? " " : "";
1122  char str[] = { FFMPEG_CONFIGURATION };
1123  char *conflist, *remove_tilde, *splitconf;
1124 
1125  // Change all the ' --' strings to '~--' so that
1126  // they can be identified as tokens.
1127  while ((conflist = strstr(str, " --")) != NULL) {
1128  strncpy(conflist, "~--", 3);
1129  }
1130 
1131  // Compensate for the weirdness this would cause
1132  // when passing 'pkg-config --static'.
1133  while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
1134  strncpy(remove_tilde, "pkg-config ", 11);
1135  }
1136 
1137  splitconf = strtok(str, "~");
1138  av_log(NULL, level, "\n%sconfiguration:\n", indent);
1139  while (splitconf != NULL) {
1140  av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
1141  splitconf = strtok(NULL, "~");
1142  }
1143 }
1144 
1145 void show_banner(int argc, char **argv, const OptionDef *options)
1146 {
1147  int idx = locate_option(argc, argv, options, "version");
1148  if (hide_banner || idx)
1149  return;
1150 
1154 }
1155 
1156 int show_version(void *optctx, const char *opt, const char *arg)
1157 {
1161 
1162  return 0;
1163 }
1164 
1165 int show_buildconf(void *optctx, const char *opt, const char *arg)
1166 {
1169 
1170  return 0;
1171 }
1172 
1173 int show_license(void *optctx, const char *opt, const char *arg)
1174 {
1175 #if CONFIG_NONFREE
1176  printf(
1177  "This version of %s has nonfree parts compiled in.\n"
1178  "Therefore it is not legally redistributable.\n",
1179  program_name );
1180 #elif CONFIG_GPLV3
1181  printf(
1182  "%s is free software; you can redistribute it and/or modify\n"
1183  "it under the terms of the GNU General Public License as published by\n"
1184  "the Free Software Foundation; either version 3 of the License, or\n"
1185  "(at your option) any later version.\n"
1186  "\n"
1187  "%s is distributed in the hope that it will be useful,\n"
1188  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1189  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1190  "GNU General Public License for more details.\n"
1191  "\n"
1192  "You should have received a copy of the GNU General Public License\n"
1193  "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1195 #elif CONFIG_GPL
1196  printf(
1197  "%s is free software; you can redistribute it and/or modify\n"
1198  "it under the terms of the GNU General Public License as published by\n"
1199  "the Free Software Foundation; either version 2 of the License, or\n"
1200  "(at your option) any later version.\n"
1201  "\n"
1202  "%s is distributed in the hope that it will be useful,\n"
1203  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1204  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1205  "GNU General Public License for more details.\n"
1206  "\n"
1207  "You should have received a copy of the GNU General Public License\n"
1208  "along with %s; if not, write to the Free Software\n"
1209  "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1211 #elif CONFIG_LGPLV3
1212  printf(
1213  "%s is free software; you can redistribute it and/or modify\n"
1214  "it under the terms of the GNU Lesser General Public License as published by\n"
1215  "the Free Software Foundation; either version 3 of the License, or\n"
1216  "(at your option) any later version.\n"
1217  "\n"
1218  "%s is distributed in the hope that it will be useful,\n"
1219  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1220  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1221  "GNU Lesser General Public License for more details.\n"
1222  "\n"
1223  "You should have received a copy of the GNU Lesser General Public License\n"
1224  "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1226 #else
1227  printf(
1228  "%s is free software; you can redistribute it and/or\n"
1229  "modify it under the terms of the GNU Lesser General Public\n"
1230  "License as published by the Free Software Foundation; either\n"
1231  "version 2.1 of the License, or (at your option) any later version.\n"
1232  "\n"
1233  "%s is distributed in the hope that it will be useful,\n"
1234  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1235  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
1236  "Lesser General Public License for more details.\n"
1237  "\n"
1238  "You should have received a copy of the GNU Lesser General Public\n"
1239  "License along with %s; if not, write to the Free Software\n"
1240  "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1242 #endif
1243 
1244  return 0;
1245 }
1246 
1247 static int is_device(const AVClass *avclass)
1248 {
1249  if (!avclass)
1250  return 0;
1251  return AV_IS_INPUT_DEVICE(avclass->category) || AV_IS_OUTPUT_DEVICE(avclass->category);
1252 }
1253 
1254 static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only)
1255 {
1256  AVInputFormat *ifmt = NULL;
1257  AVOutputFormat *ofmt = NULL;
1258  const char *last_name;
1259  int is_dev;
1260 
1261  printf("%s\n"
1262  " D. = Demuxing supported\n"
1263  " .E = Muxing supported\n"
1264  " --\n", device_only ? "Devices:" : "File formats:");
1265  last_name = "000";
1266  for (;;) {
1267  int decode = 0;
1268  int encode = 0;
1269  const char *name = NULL;
1270  const char *long_name = NULL;
1271 
1272  while ((ofmt = av_oformat_next(ofmt))) {
1273  is_dev = is_device(ofmt->priv_class);
1274  if (!is_dev && device_only)
1275  continue;
1276  if ((!name || strcmp(ofmt->name, name) < 0) &&
1277  strcmp(ofmt->name, last_name) > 0) {
1278  name = ofmt->name;
1279  long_name = ofmt->long_name;
1280  encode = 1;
1281  }
1282  }
1283  while ((ifmt = av_iformat_next(ifmt))) {
1284  is_dev = is_device(ifmt->priv_class);
1285  if (!is_dev && device_only)
1286  continue;
1287  if ((!name || strcmp(ifmt->name, name) < 0) &&
1288  strcmp(ifmt->name, last_name) > 0) {
1289  name = ifmt->name;
1290  long_name = ifmt->long_name;
1291  encode = 0;
1292  }
1293  if (name && strcmp(ifmt->name, name) == 0)
1294  decode = 1;
1295  }
1296  if (!name)
1297  break;
1298  last_name = name;
1299 
1300  printf(" %s%s %-15s %s\n",
1301  decode ? "D" : " ",
1302  encode ? "E" : " ",
1303  name,
1304  long_name ? long_name:" ");
1305  }
1306  return 0;
1307 }
1308 
1309 int show_formats(void *optctx, const char *opt, const char *arg)
1310 {
1311  return show_formats_devices(optctx, opt, arg, 0);
1312 }
1313 
1314 int show_devices(void *optctx, const char *opt, const char *arg)
1315 {
1316  return show_formats_devices(optctx, opt, arg, 1);
1317 }
1318 
1319 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
1320  if (codec->field) { \
1321  const type *p = codec->field; \
1322  \
1323  printf(" Supported " list_name ":"); \
1324  while (*p != term) { \
1325  get_name(*p); \
1326  printf(" %s", name); \
1327  p++; \
1328  } \
1329  printf("\n"); \
1330  } \
1331 
1332 static void print_codec(const AVCodec *c)
1333 {
1334  int encoder = av_codec_is_encoder(c);
1335 
1336  printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
1337  c->long_name ? c->long_name : "");
1338 
1339  printf(" General capabilities: ");
1341  printf("horizband ");
1342  if (c->capabilities & AV_CODEC_CAP_DR1)
1343  printf("dr1 ");
1345  printf("trunc ");
1347  printf("delay ");
1349  printf("small ");
1351  printf("subframes ");
1353  printf("exp ");
1355  printf("chconf ");
1357  printf("paramchange ");
1359  printf("variable ");
1363  printf("threads ");
1364  if (!c->capabilities)
1365  printf("none");
1366  printf("\n");
1367 
1368  if (c->type == AVMEDIA_TYPE_VIDEO ||
1369  c->type == AVMEDIA_TYPE_AUDIO) {
1370  printf(" Threading capabilities: ");
1375  AV_CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
1376  case AV_CODEC_CAP_FRAME_THREADS: printf("frame"); break;
1377  case AV_CODEC_CAP_SLICE_THREADS: printf("slice"); break;
1378  case AV_CODEC_CAP_AUTO_THREADS : printf("auto"); break;
1379  default: printf("none"); break;
1380  }
1381  printf("\n");
1382  }
1383 
1384  if (c->supported_framerates) {
1385  const AVRational *fps = c->supported_framerates;
1386 
1387  printf(" Supported framerates:");
1388  while (fps->num) {
1389  printf(" %d/%d", fps->num, fps->den);
1390  fps++;
1391  }
1392  printf("\n");
1393  }
1394  PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
1396  PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
1398  PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
1400  PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
1401  0, GET_CH_LAYOUT_DESC);
1402 
1403  if (c->priv_class) {
1407  }
1408 }
1409 
1411 {
1412  switch (type) {
1413  case AVMEDIA_TYPE_VIDEO: return 'V';
1414  case AVMEDIA_TYPE_AUDIO: return 'A';
1415  case AVMEDIA_TYPE_DATA: return 'D';
1416  case AVMEDIA_TYPE_SUBTITLE: return 'S';
1417  case AVMEDIA_TYPE_ATTACHMENT:return 'T';
1418  default: return '?';
1419  }
1420 }
1421 
1422 static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
1423  int encoder)
1424 {
1425  while ((prev = av_codec_next(prev))) {
1426  if (prev->id == id &&
1427  (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
1428  return prev;
1429  }
1430  return NULL;
1431 }
1432 
1433 static int compare_codec_desc(const void *a, const void *b)
1434 {
1435  const AVCodecDescriptor * const *da = a;
1436  const AVCodecDescriptor * const *db = b;
1437 
1438  return (*da)->type != (*db)->type ? FFDIFFSIGN((*da)->type, (*db)->type) :
1439  strcmp((*da)->name, (*db)->name);
1440 }
1441 
1442 static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
1443 {
1444  const AVCodecDescriptor *desc = NULL;
1445  const AVCodecDescriptor **codecs;
1446  unsigned nb_codecs = 0, i = 0;
1447 
1448  while ((desc = avcodec_descriptor_next(desc)))
1449  nb_codecs++;
1450  if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
1451  av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
1452  exit_program(1);
1453  }
1454  desc = NULL;
1455  while ((desc = avcodec_descriptor_next(desc)))
1456  codecs[i++] = desc;
1457  av_assert0(i == nb_codecs);
1458  qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
1459  *rcodecs = codecs;
1460  return nb_codecs;
1461 }
1462 
1463 static void print_codecs_for_id(enum AVCodecID id, int encoder)
1464 {
1465  const AVCodec *codec = NULL;
1466 
1467  printf(" (%s: ", encoder ? "encoders" : "decoders");
1468 
1469  while ((codec = next_codec_for_id(id, codec, encoder)))
1470  printf("%s ", codec->name);
1471 
1472  printf(")");
1473 }
1474 
1475 int show_codecs(void *optctx, const char *opt, const char *arg)
1476 {
1477  const AVCodecDescriptor **codecs;
1478  unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1479 
1480  printf("Codecs:\n"
1481  " D..... = Decoding supported\n"
1482  " .E.... = Encoding supported\n"
1483  " ..V... = Video codec\n"
1484  " ..A... = Audio codec\n"
1485  " ..S... = Subtitle codec\n"
1486  " ...I.. = Intra frame-only codec\n"
1487  " ....L. = Lossy compression\n"
1488  " .....S = Lossless compression\n"
1489  " -------\n");
1490  for (i = 0; i < nb_codecs; i++) {
1491  const AVCodecDescriptor *desc = codecs[i];
1492  const AVCodec *codec = NULL;
1493 
1494  if (strstr(desc->name, "_deprecated"))
1495  continue;
1496 
1497  printf(" ");
1498  printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1499  printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1500 
1501  printf("%c", get_media_type_char(desc->type));
1502  printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1503  printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1504  printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1505 
1506  printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1507 
1508  /* print decoders/encoders when there's more than one or their
1509  * names are different from codec name */
1510  while ((codec = next_codec_for_id(desc->id, codec, 0))) {
1511  if (strcmp(codec->name, desc->name)) {
1512  print_codecs_for_id(desc->id, 0);
1513  break;
1514  }
1515  }
1516  codec = NULL;
1517  while ((codec = next_codec_for_id(desc->id, codec, 1))) {
1518  if (strcmp(codec->name, desc->name)) {
1519  print_codecs_for_id(desc->id, 1);
1520  break;
1521  }
1522  }
1523 
1524  printf("\n");
1525  }
1526  av_free(codecs);
1527  return 0;
1528 }
1529 
1530 static void print_codecs(int encoder)
1531 {
1532  const AVCodecDescriptor **codecs;
1533  unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1534 
1535  printf("%s:\n"
1536  " V..... = Video\n"
1537  " A..... = Audio\n"
1538  " S..... = Subtitle\n"
1539  " .F.... = Frame-level multithreading\n"
1540  " ..S... = Slice-level multithreading\n"
1541  " ...X.. = Codec is experimental\n"
1542  " ....B. = Supports draw_horiz_band\n"
1543  " .....D = Supports direct rendering method 1\n"
1544  " ------\n",
1545  encoder ? "Encoders" : "Decoders");
1546  for (i = 0; i < nb_codecs; i++) {
1547  const AVCodecDescriptor *desc = codecs[i];
1548  const AVCodec *codec = NULL;
1549 
1550  while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1551  printf(" %c", get_media_type_char(desc->type));
1552  printf((codec->capabilities & AV_CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1553  printf((codec->capabilities & AV_CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1554  printf((codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1555  printf((codec->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
1556  printf((codec->capabilities & AV_CODEC_CAP_DR1) ? "D" : ".");
1557 
1558  printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1559  if (strcmp(codec->name, desc->name))
1560  printf(" (codec %s)", desc->name);
1561 
1562  printf("\n");
1563  }
1564  }
1565  av_free(codecs);
1566 }
1567 
1568 int show_decoders(void *optctx, const char *opt, const char *arg)
1569 {
1570  print_codecs(0);
1571  return 0;
1572 }
1573 
1574 int show_encoders(void *optctx, const char *opt, const char *arg)
1575 {
1576  print_codecs(1);
1577  return 0;
1578 }
1579 
1580 int show_bsfs(void *optctx, const char *opt, const char *arg)
1581 {
1582  const AVBitStreamFilter *bsf = NULL;
1583  void *opaque = NULL;
1584 
1585  printf("Bitstream filters:\n");
1586  while ((bsf = av_bsf_next(&opaque)))
1587  printf("%s\n", bsf->name);
1588  printf("\n");
1589  return 0;
1590 }
1591 
1592 int show_protocols(void *optctx, const char *opt, const char *arg)
1593 {
1594  void *opaque = NULL;
1595  const char *name;
1596 
1597  printf("Supported file protocols:\n"
1598  "Input:\n");
1599  while ((name = avio_enum_protocols(&opaque, 0)))
1600  printf(" %s\n", name);
1601  printf("Output:\n");
1602  while ((name = avio_enum_protocols(&opaque, 1)))
1603  printf(" %s\n", name);
1604  return 0;
1605 }
1606 
1607 int show_filters(void *optctx, const char *opt, const char *arg)
1608 {
1609 #if CONFIG_AVFILTER
1610  const AVFilter *filter = NULL;
1611  char descr[64], *descr_cur;
1612  int i, j;
1613  const AVFilterPad *pad;
1614 
1615  printf("Filters:\n"
1616  " T.. = Timeline support\n"
1617  " .S. = Slice threading\n"
1618  " ..C = Command support\n"
1619  " A = Audio input/output\n"
1620  " V = Video input/output\n"
1621  " N = Dynamic number and/or type of input/output\n"
1622  " | = Source or sink filter\n");
1623  while ((filter = avfilter_next(filter))) {
1624  descr_cur = descr;
1625  for (i = 0; i < 2; i++) {
1626  if (i) {
1627  *(descr_cur++) = '-';
1628  *(descr_cur++) = '>';
1629  }
1630  pad = i ? filter->outputs : filter->inputs;
1631  for (j = 0; pad && avfilter_pad_get_name(pad, j); j++) {
1632  if (descr_cur >= descr + sizeof(descr) - 4)
1633  break;
1634  *(descr_cur++) = get_media_type_char(avfilter_pad_get_type(pad, j));
1635  }
1636  if (!j)
1637  *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
1638  ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
1639  }
1640  *descr_cur = 0;
1641  printf(" %c%c%c %-17s %-10s %s\n",
1642  filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
1643  filter->flags & AVFILTER_FLAG_SLICE_THREADS ? 'S' : '.',
1644  filter->process_command ? 'C' : '.',
1645  filter->name, descr, filter->description);
1646  }
1647 #else
1648  printf("No filters available: libavfilter disabled\n");
1649 #endif
1650  return 0;
1651 }
1652 
1653 int show_colors(void *optctx, const char *opt, const char *arg)
1654 {
1655  const char *name;
1656  const uint8_t *rgb;
1657  int i;
1658 
1659  printf("%-32s #RRGGBB\n", "name");
1660 
1661  for (i = 0; name = av_get_known_color_name(i, &rgb); i++)
1662  printf("%-32s #%02x%02x%02x\n", name, rgb[0], rgb[1], rgb[2]);
1663 
1664  return 0;
1665 }
1666 
1667 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1668 {
1669  const AVPixFmtDescriptor *pix_desc = NULL;
1670 
1671  printf("Pixel formats:\n"
1672  "I.... = Supported Input format for conversion\n"
1673  ".O... = Supported Output format for conversion\n"
1674  "..H.. = Hardware accelerated format\n"
1675  "...P. = Paletted format\n"
1676  "....B = Bitstream format\n"
1677  "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1678  "-----\n");
1679 
1680 #if !CONFIG_SWSCALE
1681 # define sws_isSupportedInput(x) 0
1682 # define sws_isSupportedOutput(x) 0
1683 #endif
1684 
1685  while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1686  enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1687  printf("%c%c%c%c%c %-16s %d %2d\n",
1688  sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1689  sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1690  pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL ? 'H' : '.',
1691  pix_desc->flags & AV_PIX_FMT_FLAG_PAL ? 'P' : '.',
1692  pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
1693  pix_desc->name,
1694  pix_desc->nb_components,
1695  av_get_bits_per_pixel(pix_desc));
1696  }
1697  return 0;
1698 }
1699 
1700 int show_layouts(void *optctx, const char *opt, const char *arg)
1701 {
1702  int i = 0;
1703  uint64_t layout, j;
1704  const char *name, *descr;
1705 
1706  printf("Individual channels:\n"
1707  "NAME DESCRIPTION\n");
1708  for (i = 0; i < 63; i++) {
1709  name = av_get_channel_name((uint64_t)1 << i);
1710  if (!name)
1711  continue;
1712  descr = av_get_channel_description((uint64_t)1 << i);
1713  printf("%-14s %s\n", name, descr);
1714  }
1715  printf("\nStandard channel layouts:\n"
1716  "NAME DECOMPOSITION\n");
1717  for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
1718  if (name) {
1719  printf("%-14s ", name);
1720  for (j = 1; j; j <<= 1)
1721  if ((layout & j))
1722  printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
1723  printf("\n");
1724  }
1725  }
1726  return 0;
1727 }
1728 
1729 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1730 {
1731  int i;
1732  char fmt_str[128];
1733  for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1734  printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1735  return 0;
1736 }
1737 
1738 static void show_help_codec(const char *name, int encoder)
1739 {
1740  const AVCodecDescriptor *desc;
1741  const AVCodec *codec;
1742 
1743  if (!name) {
1744  av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1745  return;
1746  }
1747 
1748  codec = encoder ? avcodec_find_encoder_by_name(name) :
1750 
1751  if (codec)
1752  print_codec(codec);
1753  else if ((desc = avcodec_descriptor_get_by_name(name))) {
1754  int printed = 0;
1755 
1756  while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1757  printed = 1;
1758  print_codec(codec);
1759  }
1760 
1761  if (!printed) {
1762  av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
1763  "but no %s for it are available. FFmpeg might need to be "
1764  "recompiled with additional external libraries.\n",
1765  name, encoder ? "encoders" : "decoders");
1766  }
1767  } else {
1768  av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
1769  name);
1770  }
1771 }
1772 
1773 static void show_help_demuxer(const char *name)
1774 {
1775  const AVInputFormat *fmt = av_find_input_format(name);
1776 
1777  if (!fmt) {
1778  av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1779  return;
1780  }
1781 
1782  printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1783 
1784  if (fmt->extensions)
1785  printf(" Common extensions: %s.\n", fmt->extensions);
1786 
1787  if (fmt->priv_class)
1789 }
1790 
1791 static void show_help_muxer(const char *name)
1792 {
1793  const AVCodecDescriptor *desc;
1794  const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1795 
1796  if (!fmt) {
1797  av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1798  return;
1799  }
1800 
1801  printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1802 
1803  if (fmt->extensions)
1804  printf(" Common extensions: %s.\n", fmt->extensions);
1805  if (fmt->mime_type)
1806  printf(" Mime type: %s.\n", fmt->mime_type);
1807  if (fmt->video_codec != AV_CODEC_ID_NONE &&
1808  (desc = avcodec_descriptor_get(fmt->video_codec))) {
1809  printf(" Default video codec: %s.\n", desc->name);
1810  }
1811  if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1812  (desc = avcodec_descriptor_get(fmt->audio_codec))) {
1813  printf(" Default audio codec: %s.\n", desc->name);
1814  }
1815  if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1816  (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
1817  printf(" Default subtitle codec: %s.\n", desc->name);
1818  }
1819 
1820  if (fmt->priv_class)
1822 }
1823 
1824 #if CONFIG_AVFILTER
1825 static void show_help_filter(const char *name)
1826 {
1827 #if CONFIG_AVFILTER
1828  const AVFilter *f = avfilter_get_by_name(name);
1829  int i, count;
1830 
1831  if (!name) {
1832  av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
1833  return;
1834  } else if (!f) {
1835  av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
1836  return;
1837  }
1838 
1839  printf("Filter %s\n", f->name);
1840  if (f->description)
1841  printf(" %s\n", f->description);
1842 
1844  printf(" slice threading supported\n");
1845 
1846  printf(" Inputs:\n");
1847  count = avfilter_pad_count(f->inputs);
1848  for (i = 0; i < count; i++) {
1849  printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
1851  }
1853  printf(" dynamic (depending on the options)\n");
1854  else if (!count)
1855  printf(" none (source filter)\n");
1856 
1857  printf(" Outputs:\n");
1858  count = avfilter_pad_count(f->outputs);
1859  for (i = 0; i < count; i++) {
1860  printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
1862  }
1864  printf(" dynamic (depending on the options)\n");
1865  else if (!count)
1866  printf(" none (sink filter)\n");
1867 
1868  if (f->priv_class)
1872  printf("This filter has support for timeline through the 'enable' option.\n");
1873 #else
1874  av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
1875  "can not to satisfy request\n");
1876 #endif
1877 }
1878 #endif
1879 
1880 int show_help(void *optctx, const char *opt, const char *arg)
1881 {
1882  char *topic, *par;
1884 
1885  topic = av_strdup(arg ? arg : "");
1886  if (!topic)
1887  return AVERROR(ENOMEM);
1888  par = strchr(topic, '=');
1889  if (par)
1890  *par++ = 0;
1891 
1892  if (!*topic) {
1893  show_help_default(topic, par);
1894  } else if (!strcmp(topic, "decoder")) {
1895  show_help_codec(par, 0);
1896  } else if (!strcmp(topic, "encoder")) {
1897  show_help_codec(par, 1);
1898  } else if (!strcmp(topic, "demuxer")) {
1899  show_help_demuxer(par);
1900  } else if (!strcmp(topic, "muxer")) {
1901  show_help_muxer(par);
1902 #if CONFIG_AVFILTER
1903  } else if (!strcmp(topic, "filter")) {
1904  show_help_filter(par);
1905 #endif
1906  } else {
1907  show_help_default(topic, par);
1908  }
1909 
1910  av_freep(&topic);
1911  return 0;
1912 }
1913 
1914 int read_yesno(void)
1915 {
1916  int c = getchar();
1917  int yesno = (av_toupper(c) == 'Y');
1918 
1919  while (c != '\n' && c != EOF)
1920  c = getchar();
1921 
1922  return yesno;
1923 }
1924 
1925 FILE *get_preset_file(char *filename, size_t filename_size,
1926  const char *preset_name, int is_path,
1927  const char *codec_name)
1928 {
1929  FILE *f = NULL;
1930  int i;
1931  const char *base[3] = { getenv("FFMPEG_DATADIR"),
1932  getenv("HOME"),
1933  FFMPEG_DATADIR, };
1934 
1935  if (is_path) {
1936  av_strlcpy(filename, preset_name, filename_size);
1937  f = fopen(filename, "r");
1938  } else {
1939 #ifdef _WIN32
1940  char datadir[MAX_PATH], *ls;
1941  base[2] = NULL;
1942 
1943  if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
1944  {
1945  for (ls = datadir; ls < datadir + strlen(datadir); ls++)
1946  if (*ls == '\\') *ls = '/';
1947 
1948  if (ls = strrchr(datadir, '/'))
1949  {
1950  *ls = 0;
1951  strncat(datadir, "/ffpresets", sizeof(datadir) - 1 - strlen(datadir));
1952  base[2] = datadir;
1953  }
1954  }
1955 #endif
1956  for (i = 0; i < 3 && !f; i++) {
1957  if (!base[i])
1958  continue;
1959  snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
1960  i != 1 ? "" : "/.ffmpeg", preset_name);
1961  f = fopen(filename, "r");
1962  if (!f && codec_name) {
1963  snprintf(filename, filename_size,
1964  "%s%s/%s-%s.ffpreset",
1965  base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
1966  preset_name);
1967  f = fopen(filename, "r");
1968  }
1969  }
1970  }
1971 
1972  return f;
1973 }
1974 
1975 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
1976 {
1977  int ret = avformat_match_stream_specifier(s, st, spec);
1978  if (ret < 0)
1979  av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
1980  return ret;
1981 }
1982 
1984  AVFormatContext *s, AVStream *st, AVCodec *codec)
1985 {
1986  AVDictionary *ret = NULL;
1987  AVDictionaryEntry *t = NULL;
1990  char prefix = 0;
1991  const AVClass *cc = avcodec_get_class();
1992 
1993  if (!codec)
1994  codec = s->oformat ? avcodec_find_encoder(codec_id)
1995  : avcodec_find_decoder(codec_id);
1996 
1997  switch (st->codecpar->codec_type) {
1998  case AVMEDIA_TYPE_VIDEO:
1999  prefix = 'v';
2000  flags |= AV_OPT_FLAG_VIDEO_PARAM;
2001  break;
2002  case AVMEDIA_TYPE_AUDIO:
2003  prefix = 'a';
2004  flags |= AV_OPT_FLAG_AUDIO_PARAM;
2005  break;
2006  case AVMEDIA_TYPE_SUBTITLE:
2007  prefix = 's';
2008  flags |= AV_OPT_FLAG_SUBTITLE_PARAM;
2009  break;
2010  }
2011 
2012  while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
2013  char *p = strchr(t->key, ':');
2014 
2015  /* check stream specification in opt name */
2016  if (p)
2017  switch (check_stream_specifier(s, st, p + 1)) {
2018  case 1: *p = 0; break;
2019  case 0: continue;
2020  default: exit_program(1);
2021  }
2022 
2023  if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
2024  !codec ||
2025  (codec->priv_class &&
2026  av_opt_find(&codec->priv_class, t->key, NULL, flags,
2028  av_dict_set(&ret, t->key, t->value, 0);
2029  else if (t->key[0] == prefix &&
2030  av_opt_find(&cc, t->key + 1, NULL, flags,
2032  av_dict_set(&ret, t->key + 1, t->value, 0);
2033 
2034  if (p)
2035  *p = ':';
2036  }
2037  return ret;
2038 }
2039 
2041  AVDictionary *codec_opts)
2042 {
2043  int i;
2044  AVDictionary **opts;
2045 
2046  if (!s->nb_streams)
2047  return NULL;
2048  opts = av_mallocz_array(s->nb_streams, sizeof(*opts));
2049  if (!opts) {
2051  "Could not alloc memory for stream options.\n");
2052  return NULL;
2053  }
2054  for (i = 0; i < s->nb_streams; i++)
2055  opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codecpar->codec_id,
2056  s, s->streams[i], NULL);
2057  return opts;
2058 }
2059 
2060 void *grow_array(void *array, int elem_size, int *size, int new_size)
2061 {
2062  if (new_size >= INT_MAX / elem_size) {
2063  av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
2064  exit_program(1);
2065  }
2066  if (*size < new_size) {
2067  uint8_t *tmp = av_realloc_array(array, new_size, elem_size);
2068  if (!tmp) {
2069  av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
2070  exit_program(1);
2071  }
2072  memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
2073  *size = new_size;
2074  return tmp;
2075  }
2076  return array;
2077 }
2078 
2080 {
2081  AVDictionaryEntry *rotate_tag = av_dict_get(st->metadata, "rotate", NULL, 0);
2082  uint8_t* displaymatrix = av_stream_get_side_data(st,
2084  double theta = 0;
2085 
2086  if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
2087  char *tail;
2088  theta = av_strtod(rotate_tag->value, &tail);
2089  if (*tail)
2090  theta = 0;
2091  }
2092  if (displaymatrix && !theta)
2093  theta = -av_display_rotation_get((int32_t*) displaymatrix);
2094 
2095  theta -= 360*floor(theta/360 + 0.9/360);
2096 
2097  if (fabs(theta - 90*round(theta/90)) > 2)
2098  av_log(NULL, AV_LOG_WARNING, "Odd rotation angle.\n"
2099  "If you want to help, upload a sample "
2100  "of this file to ftp://upload.ffmpeg.org/incoming/ "
2101  "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)");
2102 
2103  return theta;
2104 }
2105 
2106 #if CONFIG_AVDEVICE
2107 static int print_device_sources(AVInputFormat *fmt, AVDictionary *opts)
2108 {
2109  int ret, i;
2110  AVDeviceInfoList *device_list = NULL;
2111 
2112  if (!fmt || !fmt->priv_class || !AV_IS_INPUT_DEVICE(fmt->priv_class->category))
2113  return AVERROR(EINVAL);
2114 
2115  printf("Audo-detected sources for %s:\n", fmt->name);
2116  if (!fmt->get_device_list) {
2117  ret = AVERROR(ENOSYS);
2118  printf("Cannot list sources. Not implemented.\n");
2119  goto fail;
2120  }
2121 
2122  if ((ret = avdevice_list_input_sources(fmt, NULL, opts, &device_list)) < 0) {
2123  printf("Cannot list sources.\n");
2124  goto fail;
2125  }
2126 
2127  for (i = 0; i < device_list->nb_devices; i++) {
2128  printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2129  device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2130  }
2131 
2132  fail:
2133  avdevice_free_list_devices(&device_list);
2134  return ret;
2135 }
2136 
2137 static int print_device_sinks(AVOutputFormat *fmt, AVDictionary *opts)
2138 {
2139  int ret, i;
2140  AVDeviceInfoList *device_list = NULL;
2141 
2142  if (!fmt || !fmt->priv_class || !AV_IS_OUTPUT_DEVICE(fmt->priv_class->category))
2143  return AVERROR(EINVAL);
2144 
2145  printf("Audo-detected sinks for %s:\n", fmt->name);
2146  if (!fmt->get_device_list) {
2147  ret = AVERROR(ENOSYS);
2148  printf("Cannot list sinks. Not implemented.\n");
2149  goto fail;
2150  }
2151 
2152  if ((ret = avdevice_list_output_sinks(fmt, NULL, opts, &device_list)) < 0) {
2153  printf("Cannot list sinks.\n");
2154  goto fail;
2155  }
2156 
2157  for (i = 0; i < device_list->nb_devices; i++) {
2158  printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2159  device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2160  }
2161 
2162  fail:
2163  avdevice_free_list_devices(&device_list);
2164  return ret;
2165 }
2166 
2167 static int show_sinks_sources_parse_arg(const char *arg, char **dev, AVDictionary **opts)
2168 {
2169  int ret;
2170  if (arg) {
2171  char *opts_str = NULL;
2172  av_assert0(dev && opts);
2173  *dev = av_strdup(arg);
2174  if (!*dev)
2175  return AVERROR(ENOMEM);
2176  if ((opts_str = strchr(*dev, ','))) {
2177  *(opts_str++) = '\0';
2178  if (opts_str[0] && ((ret = av_dict_parse_string(opts, opts_str, "=", ":", 0)) < 0)) {
2179  av_freep(dev);
2180  return ret;
2181  }
2182  }
2183  } else
2184  printf("\nDevice name is not provided.\n"
2185  "You can pass devicename[,opt1=val1[,opt2=val2...]] as an argument.\n\n");
2186  return 0;
2187 }
2188 
2189 int show_sources(void *optctx, const char *opt, const char *arg)
2190 {
2191  AVInputFormat *fmt = NULL;
2192  char *dev = NULL;
2193  AVDictionary *opts = NULL;
2194  int ret = 0;
2195  int error_level = av_log_get_level();
2196 
2198 
2199  if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2200  goto fail;
2201 
2202  do {
2203  fmt = av_input_audio_device_next(fmt);
2204  if (fmt) {
2205  if (!strcmp(fmt->name, "lavfi"))
2206  continue; //it's pointless to probe lavfi
2207  if (dev && !av_match_name(dev, fmt->name))
2208  continue;
2209  print_device_sources(fmt, opts);
2210  }
2211  } while (fmt);
2212  do {
2213  fmt = av_input_video_device_next(fmt);
2214  if (fmt) {
2215  if (dev && !av_match_name(dev, fmt->name))
2216  continue;
2217  print_device_sources(fmt, opts);
2218  }
2219  } while (fmt);
2220  fail:
2221  av_dict_free(&opts);
2222  av_free(dev);
2223  av_log_set_level(error_level);
2224  return ret;
2225 }
2226 
2227 int show_sinks(void *optctx, const char *opt, const char *arg)
2228 {
2229  AVOutputFormat *fmt = NULL;
2230  char *dev = NULL;
2231  AVDictionary *opts = NULL;
2232  int ret = 0;
2233  int error_level = av_log_get_level();
2234 
2236 
2237  if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2238  goto fail;
2239 
2240  do {
2241  fmt = av_output_audio_device_next(fmt);
2242  if (fmt) {
2243  if (dev && !av_match_name(dev, fmt->name))
2244  continue;
2245  print_device_sinks(fmt, opts);
2246  }
2247  } while (fmt);
2248  do {
2249  fmt = av_output_video_device_next(fmt);
2250  if (fmt) {
2251  if (dev && !av_match_name(dev, fmt->name))
2252  continue;
2253  print_device_sinks(fmt, opts);
2254  }
2255  } while (fmt);
2256  fail:
2257  av_dict_free(&opts);
2258  av_free(dev);
2259  av_log_set_level(error_level);
2260  return ret;
2261 }
2262 
2263 #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:113
int parse_optgroup(void *optctx, OptionGroup *g)
Parse an options group and write results into optctx.
Definition: cmdutils.c:408
#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:1568
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: utils.c:3060
const char * name
< group name
Definition: cmdutils.h:262
static void finish_group(OptionParseContext *octx, int group_idx, const char *arg)
Definition: cmdutils.c:656
#define FLAGS
Definition: cmdutils.c:538
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:1173
#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:2079
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:101
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:747
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:865
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:1975
#define INDENT
Definition: cmdutils.c:1058
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
Definition: avfilter.h:105
enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx)
Get the type of an AVFilterPad.
Definition: avfilter.c:1039
char * device_name
device name, format depends on device
Definition: avdevice.h:454
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3969
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:1145
static int is_device(const AVClass *avclass)
Definition: cmdutils.c:1247
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:1592
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:529
#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:3602
#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:1314
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:1309
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:491
#define OPT_FLOAT
Definition: cmdutils.h:173
AVCodec.
Definition: avcodec.h:3589
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:1667
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:1983
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:721
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:1330
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:1056
#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:1475
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:467
void register_exit(void(*cb)(int ret))
Register a program-specific cleanup routine.
Definition: cmdutils.c:124
void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
Trivial log callback.
Definition: cmdutils.c:92
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:539
#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:3099
static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
Definition: cmdutils.c:1442
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:1019
#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:1424
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:4769
#define OPT_OFFSET
Definition: cmdutils.h:180
static void init_parse_context(OptionParseContext *octx, const OptionGroupDef *groups, int nb_groups)
Definition: cmdutils.c:699
#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:1165
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
Definition: utils.c:5066
void init_opts(void)
Initialize the cmdutils option system, in particular allocate the *_opts contexts.
Definition: cmdutils.c:78
int hide_banner
Definition: cmdutils.c:76
static void filter(int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, int16_t *high, ptrdiff_t high_stride, int len, uint8_t clip)
Definition: cfhd.c:80
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1398
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:5774
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:377
#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:1092
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
const AVClass * avformat_get_class(void)
Get the AVClass for AVFormatContext.
Definition: options.c:156
void parse_loglevel(int argc, char **argv, const OptionDef *options)
Find the '-loglevel' option in the command line args and apply it.
Definition: cmdutils.c:500
#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:170
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:1530
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:441
#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:1349
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:2040
AVCodec * avcodec_find_encoder_by_name(const char *name)
Find a registered encoder with the specified name.
Definition: utils.c:3065
AVDictionary * format_opts
Definition: cmdutils.c:72
int show_help(void *optctx, const char *opt, const char *arg)
Generic -h handler common to all fftools.
Definition: cmdutils.c:1880
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:3603
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:191
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
const AVBitStreamFilter * av_bsf_next(void **opaque)
Iterate over all registered bitstream filters.
void av_log_format_line(void *ptr, int level, const char *fmt, va_list vl, char *line, int line_size, int *print_prefix)
Format a line of log the same way as the default callback.
Definition: log.c:284
#define AV_OPT_FLAG_FILTERING_PARAM
a generic parameter which can be set by the user for filtering
Definition: opt.h: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:1729
#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:3608
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3965
const char * arg
Definition: jacosubdec.c:66
#define SHOW_COPYRIGHT
Definition: cmdutils.c:1061
static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only)
Definition: cmdutils.c:1254
const char * name
Definition: cmdutils.h:164
static void show_help_muxer(const char *name)
Definition: cmdutils.c:1791
int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options)
Parse one given option.
Definition: cmdutils.c:344
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:1319
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:3596
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:1607
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:70
static const OptionDef * find_option(const OptionDef *po, const char *name)
Definition: cmdutils.c:211
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:1014
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:1386
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:1653
static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
Definition: cmdutils.c:97
#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:1580
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
static void print_codecs_for_id(enum AVCodecID id, int encoder)
Definition: cmdutils.c:1463
static int init_report(const char *env)
Definition: cmdutils.c:943
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:3018
AVDictionary * resample_opts
Definition: cmdutils.c:72
#define OPT_INT64
Definition: cmdutils.h:175
AVDictionary * metadata
Definition: avformat.h:950
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:1033
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:129
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:881
static char get_media_type_char(enum AVMediaType type)
Definition: cmdutils.c:1410
#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:3601
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:1422
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:3609
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:3079
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:1059
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:1925
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:1063
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:915
#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:158
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:2060
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:1034
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:1332
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:137
#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:3084
static int flags
Definition: cpu.c:47
const AVClass * priv_class
AVClass for the private context.
Definition: avcodec.h:3615
uint8_t level
Definition: svq3.c:207
static int match_group_separator(const OptionGroupDef *groups, int nb_groups, const char *opt)
Definition: cmdutils.c:636
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:750
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:74
Main libavformat public API header.
void print_error(const char *filename, int err)
Print an error message to stderr, indicating filename and a human readable description of the error c...
Definition: cmdutils.c:1046
#define OPT_INT
Definition: cmdutils.h:172
AVDictionary * codec_opts
Definition: cmdutils.c:72
AVDictionary * format_opts
Definition: cmdutils.h:283
#define class
Definition: math.h:25
OptionGroupList * groups
Definition: cmdutils.h:303
#define AV_CODEC_CAP_PARAM_CHANGE
Codec supports changed parameters at any point.
Definition: avcodec.h: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:122
OptionGroup global_opts
Definition: cmdutils.h:301
static void print_buildconf(int flags, int level)
Definition: cmdutils.c:1119
#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:83
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:75
#define SHOW_CONFIG
Definition: cmdutils.c:1060
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:283
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:289
void av_log_set_flags(int arg)
Definition: log.c:396
AVDictionary * swr_opts
Definition: cmdutils.c:71
void show_help_children(const AVClass *class, int flags)
Show help for all options with given flags in class and all its children.
Definition: cmdutils.c:199
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:1700
#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:853
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:1914
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:1773
const char * av_get_channel_description(uint64_t channel)
Get the description of a given channel.
static int array[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:106
#define AV_LOG_FATAL
Something went wrong and recovery is not possible.
Definition: log.h:170
AVCodecParameters * codecpar
Definition: avformat.h:1233
int show_version(void *optctx, const char *opt, const char *arg)
Print the version of the program to stdout.
Definition: cmdutils.c:1156
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:1105
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:1738
static int compare_codec_desc(const void *a, const void *b)
Definition: cmdutils.c:1433
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:1574
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:687
void av_bprint_chars(AVBPrint *buf, char c, unsigned n)
Append char c n times to a print buffer.
Definition: bprint.c:140