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cmdutils.h
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1 /*
2  * Various utilities for command line tools
3  * copyright (c) 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 #ifndef FFTOOLS_CMDUTILS_H
23 #define FFTOOLS_CMDUTILS_H
24 
25 #include <stdint.h>
26 
27 #include "config.h"
28 #include "libavcodec/avcodec.h"
29 #include "libavfilter/avfilter.h"
30 #include "libavformat/avformat.h"
31 #include "libswscale/swscale.h"
32 
33 #ifdef _WIN32
34 #undef main /* We don't want SDL to override our main() */
35 #endif
36 
37 /**
38  * program name, defined by the program for show_version().
39  */
40 extern const char program_name[];
41 
42 /**
43  * program birth year, defined by the program for show_banner()
44  */
45 extern const int program_birth_year;
46 
49 extern AVDictionary *sws_dict;
50 extern AVDictionary *swr_opts;
52 extern int hide_banner;
53 
54 /**
55  * Register a program-specific cleanup routine.
56  */
57 void register_exit(void (*cb)(int ret));
58 
59 /**
60  * Wraps exit with a program-specific cleanup routine.
61  */
62 void exit_program(int ret) av_noreturn;
63 
64 /**
65  * Initialize dynamic library loading
66  */
67 void init_dynload(void);
68 
69 /**
70  * Initialize the cmdutils option system, in particular
71  * allocate the *_opts contexts.
72  */
73 void init_opts(void);
74 /**
75  * Uninitialize the cmdutils option system, in particular
76  * free the *_opts contexts and their contents.
77  */
78 void uninit_opts(void);
79 
80 /**
81  * Trivial log callback.
82  * Only suitable for opt_help and similar since it lacks prefix handling.
83  */
84 void log_callback_help(void* ptr, int level, const char* fmt, va_list vl);
85 
86 /**
87  * Override the cpuflags.
88  */
89 int opt_cpuflags(void *optctx, const char *opt, const char *arg);
90 
91 /**
92  * Fallback for options that are not explicitly handled, these will be
93  * parsed through AVOptions.
94  */
95 int opt_default(void *optctx, const char *opt, const char *arg);
96 
97 /**
98  * Set the libav* libraries log level.
99  */
100 int opt_loglevel(void *optctx, const char *opt, const char *arg);
101 
102 int opt_report(const char *opt);
103 
104 int opt_max_alloc(void *optctx, const char *opt, const char *arg);
105 
106 int opt_codec_debug(void *optctx, const char *opt, const char *arg);
107 
108 /**
109  * Limit the execution time.
110  */
111 int opt_timelimit(void *optctx, const char *opt, const char *arg);
112 
113 /**
114  * Parse a string and return its corresponding value as a double.
115  * Exit from the application if the string cannot be correctly
116  * parsed or the corresponding value is invalid.
117  *
118  * @param context the context of the value to be set (e.g. the
119  * corresponding command line option name)
120  * @param numstr the string to be parsed
121  * @param type the type (OPT_INT64 or OPT_FLOAT) as which the
122  * string should be parsed
123  * @param min the minimum valid accepted value
124  * @param max the maximum valid accepted value
125  */
126 double parse_number_or_die(const char *context, const char *numstr, int type,
127  double min, double max);
128 
129 /**
130  * Parse a string specifying a time and return its corresponding
131  * value as a number of microseconds. Exit from the application if
132  * the string cannot be correctly parsed.
133  *
134  * @param context the context of the value to be set (e.g. the
135  * corresponding command line option name)
136  * @param timestr the string to be parsed
137  * @param is_duration a flag which tells how to interpret timestr, if
138  * not zero timestr is interpreted as a duration, otherwise as a
139  * date
140  *
141  * @see av_parse_time()
142  */
143 int64_t parse_time_or_die(const char *context, const char *timestr,
144  int is_duration);
145 
146 typedef struct SpecifierOpt {
147  char *specifier; /**< stream/chapter/program/... specifier */
148  union {
150  int i;
151  int64_t i64;
152  uint64_t ui64;
153  float f;
154  double dbl;
155  } u;
156 } SpecifierOpt;
157 
158 typedef struct OptionDef {
159  const char *name;
160  int flags;
161 #define HAS_ARG 0x0001
162 #define OPT_BOOL 0x0002
163 #define OPT_EXPERT 0x0004
164 #define OPT_STRING 0x0008
165 #define OPT_VIDEO 0x0010
166 #define OPT_AUDIO 0x0020
167 #define OPT_INT 0x0080
168 #define OPT_FLOAT 0x0100
169 #define OPT_SUBTITLE 0x0200
170 #define OPT_INT64 0x0400
171 #define OPT_EXIT 0x0800
172 #define OPT_DATA 0x1000
173 #define OPT_PERFILE 0x2000 /* the option is per-file (currently ffmpeg-only).
174  implied by OPT_OFFSET or OPT_SPEC */
175 #define OPT_OFFSET 0x4000 /* option is specified as an offset in a passed optctx */
176 #define OPT_SPEC 0x8000 /* option is to be stored in an array of SpecifierOpt.
177  Implies OPT_OFFSET. Next element after the offset is
178  an int containing element count in the array. */
179 #define OPT_TIME 0x10000
180 #define OPT_DOUBLE 0x20000
181 #define OPT_INPUT 0x40000
182 #define OPT_OUTPUT 0x80000
183  union {
184  void *dst_ptr;
185  int (*func_arg)(void *, const char *, const char *);
186  size_t off;
187  } u;
188  const char *help;
189  const char *argname;
190 } OptionDef;
191 
192 /**
193  * Print help for all options matching specified flags.
194  *
195  * @param options a list of options
196  * @param msg title of this group. Only printed if at least one option matches.
197  * @param req_flags print only options which have all those flags set.
198  * @param rej_flags don't print options which have any of those flags set.
199  * @param alt_flags print only options that have at least one of those flags set
200  */
201 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
202  int rej_flags, int alt_flags);
203 
204 #if CONFIG_AVDEVICE
205 #define CMDUTILS_COMMON_OPTIONS_AVDEVICE \
206  { "sources" , OPT_EXIT | HAS_ARG, { .func_arg = show_sources }, \
207  "list sources of the input device", "device" }, \
208  { "sinks" , OPT_EXIT | HAS_ARG, { .func_arg = show_sinks }, \
209  "list sinks of the output device", "device" }, \
210 
211 #else
212 #define CMDUTILS_COMMON_OPTIONS_AVDEVICE
213 #endif
214 
215 #define CMDUTILS_COMMON_OPTIONS \
216  { "L", OPT_EXIT, { .func_arg = show_license }, "show license" }, \
217  { "h", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
218  { "?", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
219  { "help", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
220  { "-help", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
221  { "version", OPT_EXIT, { .func_arg = show_version }, "show version" }, \
222  { "buildconf", OPT_EXIT, { .func_arg = show_buildconf }, "show build configuration" }, \
223  { "formats", OPT_EXIT, { .func_arg = show_formats }, "show available formats" }, \
224  { "muxers", OPT_EXIT, { .func_arg = show_muxers }, "show available muxers" }, \
225  { "demuxers", OPT_EXIT, { .func_arg = show_demuxers }, "show available demuxers" }, \
226  { "devices", OPT_EXIT, { .func_arg = show_devices }, "show available devices" }, \
227  { "codecs", OPT_EXIT, { .func_arg = show_codecs }, "show available codecs" }, \
228  { "decoders", OPT_EXIT, { .func_arg = show_decoders }, "show available decoders" }, \
229  { "encoders", OPT_EXIT, { .func_arg = show_encoders }, "show available encoders" }, \
230  { "bsfs", OPT_EXIT, { .func_arg = show_bsfs }, "show available bit stream filters" }, \
231  { "protocols", OPT_EXIT, { .func_arg = show_protocols }, "show available protocols" }, \
232  { "filters", OPT_EXIT, { .func_arg = show_filters }, "show available filters" }, \
233  { "pix_fmts", OPT_EXIT, { .func_arg = show_pix_fmts }, "show available pixel formats" }, \
234  { "layouts", OPT_EXIT, { .func_arg = show_layouts }, "show standard channel layouts" }, \
235  { "sample_fmts", OPT_EXIT, { .func_arg = show_sample_fmts }, "show available audio sample formats" }, \
236  { "colors", OPT_EXIT, { .func_arg = show_colors }, "show available color names" }, \
237  { "loglevel", HAS_ARG, { .func_arg = opt_loglevel }, "set logging level", "loglevel" }, \
238  { "v", HAS_ARG, { .func_arg = opt_loglevel }, "set logging level", "loglevel" }, \
239  { "report", 0, { (void*)opt_report }, "generate a report" }, \
240  { "max_alloc", HAS_ARG, { .func_arg = opt_max_alloc }, "set maximum size of a single allocated block", "bytes" }, \
241  { "cpuflags", HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpuflags }, "force specific cpu flags", "flags" }, \
242  { "hide_banner", OPT_BOOL | OPT_EXPERT, {&hide_banner}, "do not show program banner", "hide_banner" }, \
243  CMDUTILS_COMMON_OPTIONS_AVDEVICE \
244 
245 /**
246  * Show help for all options with given flags in class and all its
247  * children.
248  */
249 void show_help_children(const AVClass *class, int flags);
250 
251 /**
252  * Per-fftool specific help handler. Implemented in each
253  * fftool, called by show_help().
254  */
255 void show_help_default(const char *opt, const char *arg);
256 
257 /**
258  * Generic -h handler common to all fftools.
259  */
260 int show_help(void *optctx, const char *opt, const char *arg);
261 
262 /**
263  * Parse the command line arguments.
264  *
265  * @param optctx an opaque options context
266  * @param argc number of command line arguments
267  * @param argv values of command line arguments
268  * @param options Array with the definitions required to interpret every
269  * option of the form: -option_name [argument]
270  * @param parse_arg_function Name of the function called to process every
271  * argument without a leading option name flag. NULL if such arguments do
272  * not have to be processed.
273  */
274 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
275  void (* parse_arg_function)(void *optctx, const char*));
276 
277 /**
278  * Parse one given option.
279  *
280  * @return on success 1 if arg was consumed, 0 otherwise; negative number on error
281  */
282 int parse_option(void *optctx, const char *opt, const char *arg,
283  const OptionDef *options);
284 
285 /**
286  * An option extracted from the commandline.
287  * Cannot use AVDictionary because of options like -map which can be
288  * used multiple times.
289  */
290 typedef struct Option {
291  const OptionDef *opt;
292  const char *key;
293  const char *val;
294 } Option;
295 
296 typedef struct OptionGroupDef {
297  /**< group name */
298  const char *name;
299  /**
300  * Option to be used as group separator. Can be NULL for groups which
301  * are terminated by a non-option argument (e.g. ffmpeg output files)
302  */
303  const char *sep;
304  /**
305  * Option flags that must be set on each option that is
306  * applied to this group
307  */
308  int flags;
310 
311 typedef struct OptionGroup {
313  const char *arg;
314 
316  int nb_opts;
317 
323 } OptionGroup;
324 
325 /**
326  * A list of option groups that all have the same group type
327  * (e.g. input files or output files)
328  */
329 typedef struct OptionGroupList {
331 
335 
336 typedef struct OptionParseContext {
338 
341 
342  /* parsing state */
345 
346 /**
347  * Parse an options group and write results into optctx.
348  *
349  * @param optctx an app-specific options context. NULL for global options group
350  */
351 int parse_optgroup(void *optctx, OptionGroup *g);
352 
353 /**
354  * Split the commandline into an intermediate form convenient for further
355  * processing.
356  *
357  * The commandline is assumed to be composed of options which either belong to a
358  * group (those with OPT_SPEC, OPT_OFFSET or OPT_PERFILE) or are global
359  * (everything else).
360  *
361  * A group (defined by an OptionGroupDef struct) is a sequence of options
362  * terminated by either a group separator option (e.g. -i) or a parameter that
363  * is not an option (doesn't start with -). A group without a separator option
364  * must always be first in the supplied groups list.
365  *
366  * All options within the same group are stored in one OptionGroup struct in an
367  * OptionGroupList, all groups with the same group definition are stored in one
368  * OptionGroupList in OptionParseContext.groups. The order of group lists is the
369  * same as the order of group definitions.
370  */
371 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
372  const OptionDef *options,
373  const OptionGroupDef *groups, int nb_groups);
374 
375 /**
376  * Free all allocated memory in an OptionParseContext.
377  */
379 
380 /**
381  * Find the '-loglevel' option in the command line args and apply it.
382  */
383 void parse_loglevel(int argc, char **argv, const OptionDef *options);
384 
385 /**
386  * Return index of option opt in argv or 0 if not found.
387  */
388 int locate_option(int argc, char **argv, const OptionDef *options,
389  const char *optname);
390 
391 /**
392  * Check if the given stream matches a stream specifier.
393  *
394  * @param s Corresponding format context.
395  * @param st Stream from s to be checked.
396  * @param spec A stream specifier of the [v|a|s|d]:[<stream index>] form.
397  *
398  * @return 1 if the stream matches, 0 if it doesn't, <0 on error
399  */
400 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec);
401 
402 /**
403  * Filter out options for given codec.
404  *
405  * Create a new options dictionary containing only the options from
406  * opts which apply to the codec with ID codec_id.
407  *
408  * @param opts dictionary to place options in
409  * @param codec_id ID of the codec that should be filtered for
410  * @param s Corresponding format context.
411  * @param st A stream from s for which the options should be filtered.
412  * @param codec The particular codec for which the options should be filtered.
413  * If null, the default one is looked up according to the codec id.
414  * @return a pointer to the created dictionary
415  */
417  AVFormatContext *s, AVStream *st, AVCodec *codec);
418 
419 /**
420  * Setup AVCodecContext options for avformat_find_stream_info().
421  *
422  * Create an array of dictionaries, one dictionary for each stream
423  * contained in s.
424  * Each dictionary will contain the options from codec_opts which can
425  * be applied to the corresponding stream codec context.
426  *
427  * @return pointer to the created array of dictionaries, NULL if it
428  * cannot be created
429  */
431  AVDictionary *codec_opts);
432 
433 /**
434  * Print an error message to stderr, indicating filename and a human
435  * readable description of the error code err.
436  *
437  * If strerror_r() is not available the use of this function in a
438  * multithreaded application may be unsafe.
439  *
440  * @see av_strerror()
441  */
442 void print_error(const char *filename, int err);
443 
444 /**
445  * Print the program banner to stderr. The banner contents depend on the
446  * current version of the repository and of the libav* libraries used by
447  * the program.
448  */
449 void show_banner(int argc, char **argv, const OptionDef *options);
450 
451 /**
452  * Print the version of the program to stdout. The version message
453  * depends on the current versions of the repository and of the libav*
454  * libraries.
455  * This option processing function does not utilize the arguments.
456  */
457 int show_version(void *optctx, const char *opt, const char *arg);
458 
459 /**
460  * Print the build configuration of the program to stdout. The contents
461  * depend on the definition of FFMPEG_CONFIGURATION.
462  * This option processing function does not utilize the arguments.
463  */
464 int show_buildconf(void *optctx, const char *opt, const char *arg);
465 
466 /**
467  * Print the license of the program to stdout. The license depends on
468  * the license of the libraries compiled into the program.
469  * This option processing function does not utilize the arguments.
470  */
471 int show_license(void *optctx, const char *opt, const char *arg);
472 
473 /**
474  * Print a listing containing all the formats supported by the
475  * program (including devices).
476  * This option processing function does not utilize the arguments.
477  */
478 int show_formats(void *optctx, const char *opt, const char *arg);
479 
480 /**
481  * Print a listing containing all the muxers supported by the
482  * program (including devices).
483  * This option processing function does not utilize the arguments.
484  */
485 int show_muxers(void *optctx, const char *opt, const char *arg);
486 
487 /**
488  * Print a listing containing all the demuxer supported by the
489  * program (including devices).
490  * This option processing function does not utilize the arguments.
491  */
492 int show_demuxers(void *optctx, const char *opt, const char *arg);
493 
494 /**
495  * Print a listing containing all the devices supported by the
496  * program.
497  * This option processing function does not utilize the arguments.
498  */
499 int show_devices(void *optctx, const char *opt, const char *arg);
500 
501 #if CONFIG_AVDEVICE
502 /**
503  * Print a listing containing autodetected sinks of the output device.
504  * Device name with options may be passed as an argument to limit results.
505  */
506 int show_sinks(void *optctx, const char *opt, const char *arg);
507 
508 /**
509  * Print a listing containing autodetected sources of the input device.
510  * Device name with options may be passed as an argument to limit results.
511  */
512 int show_sources(void *optctx, const char *opt, const char *arg);
513 #endif
514 
515 /**
516  * Print a listing containing all the codecs supported by the
517  * program.
518  * This option processing function does not utilize the arguments.
519  */
520 int show_codecs(void *optctx, const char *opt, const char *arg);
521 
522 /**
523  * Print a listing containing all the decoders supported by the
524  * program.
525  */
526 int show_decoders(void *optctx, const char *opt, const char *arg);
527 
528 /**
529  * Print a listing containing all the encoders supported by the
530  * program.
531  */
532 int show_encoders(void *optctx, const char *opt, const char *arg);
533 
534 /**
535  * Print a listing containing all the filters supported by the
536  * program.
537  * This option processing function does not utilize the arguments.
538  */
539 int show_filters(void *optctx, const char *opt, const char *arg);
540 
541 /**
542  * Print a listing containing all the bit stream filters supported by the
543  * program.
544  * This option processing function does not utilize the arguments.
545  */
546 int show_bsfs(void *optctx, const char *opt, const char *arg);
547 
548 /**
549  * Print a listing containing all the protocols supported by the
550  * program.
551  * This option processing function does not utilize the arguments.
552  */
553 int show_protocols(void *optctx, const char *opt, const char *arg);
554 
555 /**
556  * Print a listing containing all the pixel formats supported by the
557  * program.
558  * This option processing function does not utilize the arguments.
559  */
560 int show_pix_fmts(void *optctx, const char *opt, const char *arg);
561 
562 /**
563  * Print a listing containing all the standard channel layouts supported by
564  * the program.
565  * This option processing function does not utilize the arguments.
566  */
567 int show_layouts(void *optctx, const char *opt, const char *arg);
568 
569 /**
570  * Print a listing containing all the sample formats supported by the
571  * program.
572  */
573 int show_sample_fmts(void *optctx, const char *opt, const char *arg);
574 
575 /**
576  * Print a listing containing all the color names and values recognized
577  * by the program.
578  */
579 int show_colors(void *optctx, const char *opt, const char *arg);
580 
581 /**
582  * Return a positive value if a line read from standard input
583  * starts with [yY], otherwise return 0.
584  */
585 int read_yesno(void);
586 
587 /**
588  * Get a file corresponding to a preset file.
589  *
590  * If is_path is non-zero, look for the file in the path preset_name.
591  * Otherwise search for a file named arg.ffpreset in the directories
592  * $FFMPEG_DATADIR (if set), $HOME/.ffmpeg, and in the datadir defined
593  * at configuration time or in a "ffpresets" folder along the executable
594  * on win32, in that order. If no such file is found and
595  * codec_name is defined, then search for a file named
596  * codec_name-preset_name.avpreset in the above-mentioned directories.
597  *
598  * @param filename buffer where the name of the found filename is written
599  * @param filename_size size in bytes of the filename buffer
600  * @param preset_name name of the preset to search
601  * @param is_path tell if preset_name is a filename path
602  * @param codec_name name of the codec for which to look for the
603  * preset, may be NULL
604  */
605 FILE *get_preset_file(char *filename, size_t filename_size,
606  const char *preset_name, int is_path, const char *codec_name);
607 
608 /**
609  * Realloc array to hold new_size elements of elem_size.
610  * Calls exit() on failure.
611  *
612  * @param array array to reallocate
613  * @param elem_size size in bytes of each element
614  * @param size new element count will be written here
615  * @param new_size number of elements to place in reallocated array
616  * @return reallocated array
617  */
618 void *grow_array(void *array, int elem_size, int *size, int new_size);
619 
620 #define media_type_string av_get_media_type_string
621 
622 #define GROW_ARRAY(array, nb_elems)\
623  array = grow_array(array, sizeof(*array), &nb_elems, nb_elems + 1)
624 
625 #define GET_PIX_FMT_NAME(pix_fmt)\
626  const char *name = av_get_pix_fmt_name(pix_fmt);
627 
628 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
629  const char *name = av_get_sample_fmt_name(sample_fmt)
630 
631 #define GET_SAMPLE_RATE_NAME(rate)\
632  char name[16];\
633  snprintf(name, sizeof(name), "%d", rate);
634 
635 #define GET_CH_LAYOUT_NAME(ch_layout)\
636  char name[16];\
637  snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
638 
639 #define GET_CH_LAYOUT_DESC(ch_layout)\
640  char name[128];\
641  av_get_channel_layout_string(name, sizeof(name), 0, ch_layout);
642 
643 double get_rotation(AVStream *st);
644 
645 #endif /* FFTOOLS_CMDUTILS_H */
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:447
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:1600
int opt_codec_debug(void *optctx, const char *opt, const char *arg)
AVDictionary * resample_opts
Definition: cmdutils.h:320
const char * s
Definition: avisynth_c.h:768
AVDictionary * swr_opts
Definition: cmdutils.h:322
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:1687
uint64_t ui64
Definition: cmdutils.h:152
const char * name
< group name
Definition: cmdutils.h:298
int parse_optgroup(void *optctx, OptionGroup *g)
Parse an options group and write results into optctx.
Definition: cmdutils.c:414
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the given stream matches a stream specifier.
Definition: cmdutils.c:1995
void uninit_parse_context(OptionParseContext *octx)
Free all allocated memory in an OptionParseContext.
Definition: cmdutils.c:727
const char * fmt
Definition: avisynth_c.h:769
int(* func_arg)(void *, const char *, const char *)
Definition: cmdutils.h:185
Main libavfilter public API header.
const char * g
Definition: vf_curves.c:112
double dbl
Definition: cmdutils.h:154
const char * arg
Definition: cmdutils.h:313
AVCodecContext * avcodec_opts[AVMEDIA_TYPE_NB]
const char * sep
Option to be used as group separator.
Definition: cmdutils.h:303
int hide_banner
Definition: cmdutils.c:77
AVCodec.
Definition: avcodec.h:3365
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:1588
void register_exit(void(*cb)(int ret))
Register a program-specific cleanup routine.
Definition: cmdutils.c:131
Format I/O context.
Definition: avformat.h:1325
int opt_max_alloc(void *optctx, const char *opt, const char *arg)
Definition: cmdutils.c:1025
AVDictionary * format_opts
Definition: cmdutils.c:73
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:106
uint8_t
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:144
static const OptionGroupDef groups[]
Definition: ffmpeg_opt.c:3272
int opt_timelimit(void *optctx, const char *opt, const char *arg)
Limit the execution time.
Definition: cmdutils.c:1039
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:1612
int nb_opts
Definition: cmdutils.h:316
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:506
static int flags
Definition: log.c:57
external API header
ptrdiff_t size
Definition: opengl_enc.c:101
const OptionDef options[]
Definition: ffserver.c:3948
void uninit_opts(void)
Uninitialize the cmdutils option system, in particular free the *_opts contexts and their contents...
Definition: cmdutils.c:90
int flags
Option flags that must be set on each option that is applied to this group.
Definition: cmdutils.h:308
int show_license(void *optctx, const char *opt, const char *arg)
Print the license of the program to stdout.
Definition: cmdutils.c:1179
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:215
AVDictionary * swr_opts
Definition: cmdutils.c:72
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:1720
int show_buildconf(void *optctx, const char *opt, const char *arg)
Print the build configuration of the program to stdout.
Definition: cmdutils.c:1171
void init_opts(void)
Initialize the cmdutils option system, in particular allocate the *_opts contexts.
Definition: cmdutils.c:85
const char * arg
Definition: jacosubdec.c:66
const char * name
Definition: cmdutils.h:159
int flags
Definition: cmdutils.h:160
const char * val
Definition: cmdutils.h:293
int show_demuxers(void *optctx, const char *opt, const char *arg)
Print a listing containing all the demuxer supported by the program (including devices).
Definition: cmdutils.c:1329
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:1673
const int program_birth_year
program birth year, defined by the program for show_banner()
Definition: ffmpeg.c:113
AVDictionary ** setup_find_stream_info_opts(AVFormatContext *s, AVDictionary *codec_opts)
Setup AVCodecContext options for avformat_find_stream_info().
Definition: cmdutils.c:2060
AVDictionary * opts
Definition: movenc.c:50
OptionGroup * groups
Definition: cmdutils.h:332
size_t off
Definition: cmdutils.h:186
AVDictionary * sws_dict
Definition: cmdutils.c:71
int64_t i64
Definition: cmdutils.h:151
const OptionGroupDef * group_def
Definition: cmdutils.h:330
A list of option groups that all have the same group type (e.g.
Definition: cmdutils.h:329
void show_help_default(const char *opt, const char *arg)
Per-fftool specific help handler.
Definition: ffmpeg_opt.c:3191
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:1945
int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options)
Parse one given option.
Definition: cmdutils.c:350
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:545
char * specifier
stream/chapter/program/...
Definition: cmdutils.h:147
enum AVCodecID codec_id
Definition: vaapi_decode.c:236
void * dst_ptr
Definition: cmdutils.h:184
union SpecifierOpt::@36 u
int opt_loglevel(void *optctx, const char *opt, const char *arg)
Set the libav* libraries log level.
Definition: cmdutils.c:871
uint8_t * str
Definition: cmdutils.h:149
int opt_report(const char *opt)
Definition: cmdutils.c:1020
Stream structure.
Definition: avformat.h:872
int show_version(void *optctx, const char *opt, const char *arg)
Print the version of the program to stdout.
Definition: cmdutils.c:1162
void show_banner(int argc, char **argv, const OptionDef *options)
Print the program banner to stderr.
Definition: cmdutils.c:1151
Libavcodec external API header.
const char * help
Definition: cmdutils.h:188
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:1319
main external API structure.
Definition: avcodec.h:1502
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:1334
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:165
AVDictionary * codec_opts
Definition: cmdutils.c:73
GLint GLenum type
Definition: opengl_enc.c:105
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:2003
const OptionGroupDef * group_def
Definition: cmdutils.h:312
Describe the class of an AVClass context structure.
Definition: log.h:67
const char * argname
Definition: cmdutils.h:189
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:1495
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:753
uint8_t level
Definition: svq3.c:207
void parse_options(void *optctx, int argc, char **argv, const OptionDef *options, void(*parse_arg_function)(void *optctx, const char *))
Parse the command line arguments.
void exit_program(int ret) av_noreturn
Wraps exit with a program-specific cleanup routine.
Definition: cmdutils.c:136
int show_muxers(void *optctx, const char *opt, const char *arg)
Print a listing containing all the muxers supported by the program (including devices).
Definition: cmdutils.c:1324
An option extracted from the commandline.
Definition: cmdutils.h:290
Main libavformat public API header.
int
AVDictionary * format_opts
Definition: cmdutils.h:319
#define av_noreturn
Definition: attributes.h:162
OptionGroupList * groups
Definition: cmdutils.h:339
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:177
OptionGroup global_opts
Definition: cmdutils.h:337
AVFormatContext * avformat_opts
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:2080
const char * key
Definition: cmdutils.h:292
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:1594
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:206
int show_help(void *optctx, const char *opt, const char *arg)
Generic -h handler common to all fftools.
Definition: cmdutils.c:1900
const OptionDef * opt
Definition: cmdutils.h:291
AVDictionary * resample_opts
Definition: cmdutils.c:73
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:1749
OptionGroup cur_group
Definition: cmdutils.h:343
AVDictionary * codec_opts
Definition: cmdutils.h:318
Option * opts
Definition: cmdutils.h:315
void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
Trivial log callback.
Definition: cmdutils.c:99
double get_rotation(AVStream *st)
Definition: cmdutils.c:2099
static int array[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:106
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:1052
union OptionDef::@37 u
AVDictionary * sws_dict
Definition: cmdutils.h:321
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:1627
void init_dynload(void)
Initialize dynamic library loading.
Definition: cmdutils.c:120
int opt_cpuflags(void *optctx, const char *opt, const char *arg)
Override the cpuflags.
Definition: cmdutils.c:859
float min
int read_yesno(void)
Return a positive value if a line read from standard input starts with [yY], otherwise return 0...
Definition: cmdutils.c:1934
const char program_name[]
program name, defined by the program for show_version().
Definition: ffmpeg.c:112