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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 FFMPEG_CMDUTILS_H
23 #define FFMPEG_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 struct SwsContext *sws_opts;
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 the cmdutils option system, in particular
66  * allocate the *_opts contexts.
67  */
68 void init_opts(void);
69 /**
70  * Uninitialize the cmdutils option system, in particular
71  * free the *_opts contexts and their contents.
72  */
73 void uninit_opts(void);
74 
75 /**
76  * Trivial log callback.
77  * Only suitable for opt_help and similar since it lacks prefix handling.
78  */
79 void log_callback_help(void* ptr, int level, const char* fmt, va_list vl);
80 
81 /**
82  * Override the cpuflags.
83  */
84 int opt_cpuflags(void *optctx, const char *opt, const char *arg);
85 
86 /**
87  * Fallback for options that are not explicitly handled, these will be
88  * parsed through AVOptions.
89  */
90 int opt_default(void *optctx, const char *opt, const char *arg);
91 
92 /**
93  * Set the libav* libraries log level.
94  */
95 int opt_loglevel(void *optctx, const char *opt, const char *arg);
96 
97 int opt_report(const char *opt);
98 
99 int opt_max_alloc(void *optctx, const char *opt, const char *arg);
100 
101 int opt_codec_debug(void *optctx, const char *opt, const char *arg);
102 
103 #if CONFIG_OPENCL
104 int opt_opencl(void *optctx, const char *opt, const char *arg);
105 
106 int opt_opencl_bench(void *optctx, const char *opt, const char *arg);
107 #endif
108 
109 /**
110  * Limit the execution time.
111  */
112 int opt_timelimit(void *optctx, const char *opt, const char *arg);
113 
114 /**
115  * Parse a string and return its corresponding value as a double.
116  * Exit from the application if the string cannot be correctly
117  * parsed or the corresponding value is invalid.
118  *
119  * @param context the context of the value to be set (e.g. the
120  * corresponding command line option name)
121  * @param numstr the string to be parsed
122  * @param type the type (OPT_INT64 or OPT_FLOAT) as which the
123  * string should be parsed
124  * @param min the minimum valid accepted value
125  * @param max the maximum valid accepted value
126  */
127 double parse_number_or_die(const char *context, const char *numstr, int type,
128  double min, double max);
129 
130 /**
131  * Parse a string specifying a time and return its corresponding
132  * value as a number of microseconds. Exit from the application if
133  * the string cannot be correctly parsed.
134  *
135  * @param context the context of the value to be set (e.g. the
136  * corresponding command line option name)
137  * @param timestr the string to be parsed
138  * @param is_duration a flag which tells how to interpret timestr, if
139  * not zero timestr is interpreted as a duration, otherwise as a
140  * date
141  *
142  * @see av_parse_time()
143  */
144 int64_t parse_time_or_die(const char *context, const char *timestr,
145  int is_duration);
146 
147 typedef struct SpecifierOpt {
148  char *specifier; /**< stream/chapter/program/... specifier */
149  union {
151  int i;
152  int64_t i64;
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 /**
205  * Show help for all options with given flags in class and all its
206  * children.
207  */
208 void show_help_children(const AVClass *class, int flags);
209 
210 /**
211  * Per-fftool specific help handler. Implemented in each
212  * fftool, called by show_help().
213  */
214 void show_help_default(const char *opt, const char *arg);
215 
216 /**
217  * Generic -h handler common to all fftools.
218  */
219 int show_help(void *optctx, const char *opt, const char *arg);
220 
221 /**
222  * Parse the command line arguments.
223  *
224  * @param optctx an opaque options context
225  * @param argc number of command line arguments
226  * @param argv values of command line arguments
227  * @param options Array with the definitions required to interpret every
228  * option of the form: -option_name [argument]
229  * @param parse_arg_function Name of the function called to process every
230  * argument without a leading option name flag. NULL if such arguments do
231  * not have to be processed.
232  */
233 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
234  void (* parse_arg_function)(void *optctx, const char*));
235 
236 /**
237  * Parse one given option.
238  *
239  * @return on success 1 if arg was consumed, 0 otherwise; negative number on error
240  */
241 int parse_option(void *optctx, const char *opt, const char *arg,
242  const OptionDef *options);
243 
244 /**
245  * An option extracted from the commandline.
246  * Cannot use AVDictionary because of options like -map which can be
247  * used multiple times.
248  */
249 typedef struct Option {
250  const OptionDef *opt;
251  const char *key;
252  const char *val;
253 } Option;
254 
255 typedef struct OptionGroupDef {
256  /**< group name */
257  const char *name;
258  /**
259  * Option to be used as group separator. Can be NULL for groups which
260  * are terminated by a non-option argument (e.g. ffmpeg output files)
261  */
262  const char *sep;
263  /**
264  * Option flags that must be set on each option that is
265  * applied to this group
266  */
267  int flags;
269 
270 typedef struct OptionGroup {
272  const char *arg;
273 
275  int nb_opts;
276 
282 } OptionGroup;
283 
284 /**
285  * A list of option groups that all have the same group type
286  * (e.g. input files or output files)
287  */
288 typedef struct OptionGroupList {
290 
294 
295 typedef struct OptionParseContext {
297 
300 
301  /* parsing state */
304 
305 /**
306  * Parse an options group and write results into optctx.
307  *
308  * @param optctx an app-specific options context. NULL for global options group
309  */
310 int parse_optgroup(void *optctx, OptionGroup *g);
311 
312 /**
313  * Split the commandline into an intermediate form convenient for further
314  * processing.
315  *
316  * The commandline is assumed to be composed of options which either belong to a
317  * group (those with OPT_SPEC, OPT_OFFSET or OPT_PERFILE) or are global
318  * (everything else).
319  *
320  * A group (defined by an OptionGroupDef struct) is a sequence of options
321  * terminated by either a group separator option (e.g. -i) or a parameter that
322  * is not an option (doesn't start with -). A group without a separator option
323  * must always be first in the supplied groups list.
324  *
325  * All options within the same group are stored in one OptionGroup struct in an
326  * OptionGroupList, all groups with the same group definition are stored in one
327  * OptionGroupList in OptionParseContext.groups. The order of group lists is the
328  * same as the order of group definitions.
329  */
330 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
331  const OptionDef *options,
332  const OptionGroupDef *groups, int nb_groups);
333 
334 /**
335  * Free all allocated memory in an OptionParseContext.
336  */
338 
339 /**
340  * Find the '-loglevel' option in the command line args and apply it.
341  */
342 void parse_loglevel(int argc, char **argv, const OptionDef *options);
343 
344 /**
345  * Return index of option opt in argv or 0 if not found.
346  */
347 int locate_option(int argc, char **argv, const OptionDef *options,
348  const char *optname);
349 
350 /**
351  * Check if the given stream matches a stream specifier.
352  *
353  * @param s Corresponding format context.
354  * @param st Stream from s to be checked.
355  * @param spec A stream specifier of the [v|a|s|d]:[<stream index>] form.
356  *
357  * @return 1 if the stream matches, 0 if it doesn't, <0 on error
358  */
359 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec);
360 
361 /**
362  * Filter out options for given codec.
363  *
364  * Create a new options dictionary containing only the options from
365  * opts which apply to the codec with ID codec_id.
366  *
367  * @param opts dictionary to place options in
368  * @param codec_id ID of the codec that should be filtered for
369  * @param s Corresponding format context.
370  * @param st A stream from s for which the options should be filtered.
371  * @param codec The particular codec for which the options should be filtered.
372  * If null, the default one is looked up according to the codec id.
373  * @return a pointer to the created dictionary
374  */
376  AVFormatContext *s, AVStream *st, AVCodec *codec);
377 
378 /**
379  * Setup AVCodecContext options for avformat_find_stream_info().
380  *
381  * Create an array of dictionaries, one dictionary for each stream
382  * contained in s.
383  * Each dictionary will contain the options from codec_opts which can
384  * be applied to the corresponding stream codec context.
385  *
386  * @return pointer to the created array of dictionaries, NULL if it
387  * cannot be created
388  */
390  AVDictionary *codec_opts);
391 
392 /**
393  * Print an error message to stderr, indicating filename and a human
394  * readable description of the error code err.
395  *
396  * If strerror_r() is not available the use of this function in a
397  * multithreaded application may be unsafe.
398  *
399  * @see av_strerror()
400  */
401 void print_error(const char *filename, int err);
402 
403 /**
404  * Print the program banner to stderr. The banner contents depend on the
405  * current version of the repository and of the libav* libraries used by
406  * the program.
407  */
408 void show_banner(int argc, char **argv, const OptionDef *options);
409 
410 /**
411  * Print the version of the program to stdout. The version message
412  * depends on the current versions of the repository and of the libav*
413  * libraries.
414  * This option processing function does not utilize the arguments.
415  */
416 int show_version(void *optctx, const char *opt, const char *arg);
417 
418 /**
419  * Print the build configuration of the program to stdout. The contents
420  * depend on the definition of FFMPEG_CONFIGURATION.
421  * This option processing function does not utilize the arguments.
422  */
423 int show_buildconf(void *optctx, const char *opt, const char *arg);
424 
425 /**
426  * Print the license of the program to stdout. The license depends on
427  * the license of the libraries compiled into the program.
428  * This option processing function does not utilize the arguments.
429  */
430 int show_license(void *optctx, const char *opt, const char *arg);
431 
432 /**
433  * Print a listing containing all the formats supported by the
434  * program (including devices).
435  * This option processing function does not utilize the arguments.
436  */
437 int show_formats(void *optctx, const char *opt, const char *arg);
438 
439 /**
440  * Print a listing containing all the devices supported by the
441  * program.
442  * This option processing function does not utilize the arguments.
443  */
444 int show_devices(void *optctx, const char *opt, const char *arg);
445 
446 #if CONFIG_AVDEVICE
447 /**
448  * Print a listing containing audodetected sinks of the output device.
449  * Device name with options may be passed as an argument to limit results.
450  */
451 int show_sinks(void *optctx, const char *opt, const char *arg);
452 
453 /**
454  * Print a listing containing audodetected sources of the input device.
455  * Device name with options may be passed as an argument to limit results.
456  */
457 int show_sources(void *optctx, const char *opt, const char *arg);
458 #endif
459 
460 /**
461  * Print a listing containing all the codecs supported by the
462  * program.
463  * This option processing function does not utilize the arguments.
464  */
465 int show_codecs(void *optctx, const char *opt, const char *arg);
466 
467 /**
468  * Print a listing containing all the decoders supported by the
469  * program.
470  */
471 int show_decoders(void *optctx, const char *opt, const char *arg);
472 
473 /**
474  * Print a listing containing all the encoders supported by the
475  * program.
476  */
477 int show_encoders(void *optctx, const char *opt, const char *arg);
478 
479 /**
480  * Print a listing containing all the filters supported by the
481  * program.
482  * This option processing function does not utilize the arguments.
483  */
484 int show_filters(void *optctx, const char *opt, const char *arg);
485 
486 /**
487  * Print a listing containing all the bit stream filters supported by the
488  * program.
489  * This option processing function does not utilize the arguments.
490  */
491 int show_bsfs(void *optctx, const char *opt, const char *arg);
492 
493 /**
494  * Print a listing containing all the protocols supported by the
495  * program.
496  * This option processing function does not utilize the arguments.
497  */
498 int show_protocols(void *optctx, const char *opt, const char *arg);
499 
500 /**
501  * Print a listing containing all the pixel formats supported by the
502  * program.
503  * This option processing function does not utilize the arguments.
504  */
505 int show_pix_fmts(void *optctx, const char *opt, const char *arg);
506 
507 /**
508  * Print a listing containing all the standard channel layouts supported by
509  * the program.
510  * This option processing function does not utilize the arguments.
511  */
512 int show_layouts(void *optctx, const char *opt, const char *arg);
513 
514 /**
515  * Print a listing containing all the sample formats supported by the
516  * program.
517  */
518 int show_sample_fmts(void *optctx, const char *opt, const char *arg);
519 
520 /**
521  * Print a listing containing all the color names and values recognized
522  * by the program.
523  */
524 int show_colors(void *optctx, const char *opt, const char *arg);
525 
526 /**
527  * Return a positive value if a line read from standard input
528  * starts with [yY], otherwise return 0.
529  */
530 int read_yesno(void);
531 
532 /**
533  * Get a file corresponding to a preset file.
534  *
535  * If is_path is non-zero, look for the file in the path preset_name.
536  * Otherwise search for a file named arg.ffpreset in the directories
537  * $FFMPEG_DATADIR (if set), $HOME/.ffmpeg, and in the datadir defined
538  * at configuration time or in a "ffpresets" folder along the executable
539  * on win32, in that order. If no such file is found and
540  * codec_name is defined, then search for a file named
541  * codec_name-preset_name.avpreset in the above-mentioned directories.
542  *
543  * @param filename buffer where the name of the found filename is written
544  * @param filename_size size in bytes of the filename buffer
545  * @param preset_name name of the preset to search
546  * @param is_path tell if preset_name is a filename path
547  * @param codec_name name of the codec for which to look for the
548  * preset, may be NULL
549  */
550 FILE *get_preset_file(char *filename, size_t filename_size,
551  const char *preset_name, int is_path, const char *codec_name);
552 
553 /**
554  * Realloc array to hold new_size elements of elem_size.
555  * Calls exit() on failure.
556  *
557  * @param array array to reallocate
558  * @param elem_size size in bytes of each element
559  * @param size new element count will be written here
560  * @param new_size number of elements to place in reallocated array
561  * @return reallocated array
562  */
563 void *grow_array(void *array, int elem_size, int *size, int new_size);
564 
565 #define media_type_string av_get_media_type_string
566 
567 #define GROW_ARRAY(array, nb_elems)\
568  array = grow_array(array, sizeof(*array), &nb_elems, nb_elems + 1)
569 
570 #define GET_PIX_FMT_NAME(pix_fmt)\
571  const char *name = av_get_pix_fmt_name(pix_fmt);
572 
573 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
574  const char *name = av_get_sample_fmt_name(sample_fmt)
575 
576 #define GET_SAMPLE_RATE_NAME(rate)\
577  char name[16];\
578  snprintf(name, sizeof(name), "%d", rate);
579 
580 #define GET_CH_LAYOUT_NAME(ch_layout)\
581  char name[16];\
582  snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
583 
584 #define GET_CH_LAYOUT_DESC(ch_layout)\
585  char name[128];\
586  av_get_channel_layout_string(name, sizeof(name), 0, ch_layout);
587 
588 double get_rotation(AVStream *st);
589 
590 #endif /* 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:435
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:1534
int opt_codec_debug(void *optctx, const char *opt, const char *arg)
AVDictionary * resample_opts
Definition: cmdutils.h:279
const char * s
Definition: avisynth_c.h:631
AVDictionary * swr_opts
Definition: cmdutils.h:281
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:1620
const char * name
< group name
Definition: cmdutils.h:257
int parse_optgroup(void *optctx, OptionGroup *g)
Parse an options group and write results into optctx.
Definition: cmdutils.c:402
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the given stream matches a stream specifier.
Definition: cmdutils.c:1928
void uninit_parse_context(OptionParseContext *octx)
Free all allocated memory in an OptionParseContext.
Definition: cmdutils.c:706
const char * fmt
Definition: avisynth_c.h:632
int(* func_arg)(void *, const char *, const char *)
Definition: cmdutils.h:185
Main libavfilter public API header.
const char * g
Definition: vf_curves.c:108
double dbl
Definition: cmdutils.h:154
const char * arg
Definition: cmdutils.h:272
AVCodecContext * avcodec_opts[AVMEDIA_TYPE_NB]
const char * sep
Option to be used as group separator.
Definition: cmdutils.h:262
int hide_banner
Definition: cmdutils.c:72
AVCodec.
Definition: avcodec.h:3474
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:1522
void register_exit(void(*cb)(int ret))
Register a program-specific cleanup routine.
Definition: cmdutils.c:118
Format I/O context.
Definition: avformat.h:1272
int opt_max_alloc(void *optctx, const char *opt, const char *arg)
Definition: cmdutils.c:1005
AVDictionary * format_opts
Definition: cmdutils.c:68
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:97
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:131
static const OptionGroupDef groups[]
Definition: ffmpeg_opt.c:2859
int opt_timelimit(void *optctx, const char *opt, const char *arg)
Limit the execution time.
Definition: cmdutils.c:1019
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:1545
int nb_opts
Definition: cmdutils.h:275
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:494
external API header
ptrdiff_t size
Definition: opengl_enc.c:101
const OptionDef options[]
Definition: ffserver.c:3807
void uninit_opts(void)
Uninitialize the cmdutils option system, in particular free the *_opts contexts and their contents...
Definition: cmdutils.c:82
int flags
Option flags that must be set on each option that is applied to this group.
Definition: cmdutils.h:267
int show_license(void *optctx, const char *opt, const char *arg)
Print the license of the program to stdout.
Definition: cmdutils.c:1158
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:102
AVDictionary * swr_opts
Definition: cmdutils.c:67
struct SwsContext * sws_opts
Definition: cmdutils.c:66
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:1653
int show_buildconf(void *optctx, const char *opt, const char *arg)
Print the build configuration of the program to stdout.
Definition: cmdutils.c:1150
void init_opts(void)
Initialize the cmdutils option system, in particular allocate the *_opts contexts.
Definition: cmdutils.c:74
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:252
enum AVCodecID codec_id
Definition: mov_chan.c:433
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:1606
Libavcodec external API header.
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:1993
OptionGroup * groups
Definition: cmdutils.h:291
size_t off
Definition: cmdutils.h:186
int opt_opencl(void *optctx, const char *opt, const char *arg)
ret
Definition: avfilter.c:974
int64_t i64
Definition: cmdutils.h:152
const OptionGroupDef * group_def
Definition: cmdutils.h:289
A list of option groups that all have the same group type (e.g.
Definition: cmdutils.h:288
void show_help_default(const char *opt, const char *arg)
Per-fftool specific help handler.
Definition: ffmpeg_opt.c:2779
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:1878
int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options)
Parse one given option.
Definition: cmdutils.c:338
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:533
char * specifier
stream/chapter/program/...
Definition: cmdutils.h:148
void * dst_ptr
Definition: cmdutils.h:184
int opt_loglevel(void *optctx, const char *opt, const char *arg)
Set the libav* libraries log level.
Definition: cmdutils.c:851
uint8_t * str
Definition: cmdutils.h:150
int opt_report(const char *opt)
Definition: cmdutils.c:1000
Stream structure.
Definition: avformat.h:842
int show_version(void *optctx, const char *opt, const char *arg)
Print the version of the program to stdout.
Definition: cmdutils.c:1141
void show_banner(int argc, char **argv, const OptionDef *options)
Print the program banner to stderr.
Definition: cmdutils.c:1130
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:1294
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:1299
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:152
AVDictionary * codec_opts
Definition: cmdutils.c:68
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:1936
const OptionGroupDef * group_def
Definition: cmdutils.h:271
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:1429
static int flags
Definition: cpu.c:47
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:733
uint8_t level
Definition: svq3.c:150
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:123
An option extracted from the commandline.
Definition: cmdutils.h:249
Main libavformat public API header.
AVDictionary * format_opts
Definition: cmdutils.h:278
#define av_noreturn
Definition: attributes.h:155
OptionGroupList * groups
Definition: cmdutils.h:298
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:164
OptionGroup global_opts
Definition: cmdutils.h:296
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:2013
const char * key
Definition: cmdutils.h:251
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:1528
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:193
int show_help(void *optctx, const char *opt, const char *arg)
Generic -h handler common to all fftools.
Definition: cmdutils.c:1833
const OptionDef * opt
Definition: cmdutils.h:250
AVDictionary * resample_opts
Definition: cmdutils.c:68
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:1682
union SpecifierOpt::@0 u
OptionGroup cur_group
Definition: cmdutils.h:302
AVDictionary * codec_opts
Definition: cmdutils.h:277
Option * opts
Definition: cmdutils.h:274
void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
Trivial log callback.
Definition: cmdutils.c:95
union OptionDef::@1 u
double get_rotation(AVStream *st)
Definition: cmdutils.c:2032
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:1032
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:1560
int opt_cpuflags(void *optctx, const char *opt, const char *arg)
Override the cpuflags.
Definition: cmdutils.c:839
struct SwsContext * sws_opts
Definition: cmdutils.h:280
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:1867
const char program_name[]
program name, defined by the program for show_version().
Definition: ffmpeg.c:112
int opt_opencl_bench(void *optctx, const char *opt, const char *arg)