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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 CMDUTILS_H
23 #define 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 #if CONFIG_OPENCL
109 int opt_opencl(void *optctx, const char *opt, const char *arg);
110 
111 int opt_opencl_bench(void *optctx, const char *opt, const char *arg);
112 #endif
113 
114 /**
115  * Limit the execution time.
116  */
117 int opt_timelimit(void *optctx, const char *opt, const char *arg);
118 
119 /**
120  * Parse a string and return its corresponding value as a double.
121  * Exit from the application if the string cannot be correctly
122  * parsed or the corresponding value is invalid.
123  *
124  * @param context the context of the value to be set (e.g. the
125  * corresponding command line option name)
126  * @param numstr the string to be parsed
127  * @param type the type (OPT_INT64 or OPT_FLOAT) as which the
128  * string should be parsed
129  * @param min the minimum valid accepted value
130  * @param max the maximum valid accepted value
131  */
132 double parse_number_or_die(const char *context, const char *numstr, int type,
133  double min, double max);
134 
135 /**
136  * Parse a string specifying a time and return its corresponding
137  * value as a number of microseconds. Exit from the application if
138  * the string cannot be correctly parsed.
139  *
140  * @param context the context of the value to be set (e.g. the
141  * corresponding command line option name)
142  * @param timestr the string to be parsed
143  * @param is_duration a flag which tells how to interpret timestr, if
144  * not zero timestr is interpreted as a duration, otherwise as a
145  * date
146  *
147  * @see av_parse_time()
148  */
149 int64_t parse_time_or_die(const char *context, const char *timestr,
150  int is_duration);
151 
152 typedef struct SpecifierOpt {
153  char *specifier; /**< stream/chapter/program/... specifier */
154  union {
156  int i;
157  int64_t i64;
158  float f;
159  double dbl;
160  } u;
161 } SpecifierOpt;
162 
163 typedef struct OptionDef {
164  const char *name;
165  int flags;
166 #define HAS_ARG 0x0001
167 #define OPT_BOOL 0x0002
168 #define OPT_EXPERT 0x0004
169 #define OPT_STRING 0x0008
170 #define OPT_VIDEO 0x0010
171 #define OPT_AUDIO 0x0020
172 #define OPT_INT 0x0080
173 #define OPT_FLOAT 0x0100
174 #define OPT_SUBTITLE 0x0200
175 #define OPT_INT64 0x0400
176 #define OPT_EXIT 0x0800
177 #define OPT_DATA 0x1000
178 #define OPT_PERFILE 0x2000 /* the option is per-file (currently ffmpeg-only).
179  implied by OPT_OFFSET or OPT_SPEC */
180 #define OPT_OFFSET 0x4000 /* option is specified as an offset in a passed optctx */
181 #define OPT_SPEC 0x8000 /* option is to be stored in an array of SpecifierOpt.
182  Implies OPT_OFFSET. Next element after the offset is
183  an int containing element count in the array. */
184 #define OPT_TIME 0x10000
185 #define OPT_DOUBLE 0x20000
186 #define OPT_INPUT 0x40000
187 #define OPT_OUTPUT 0x80000
188  union {
189  void *dst_ptr;
190  int (*func_arg)(void *, const char *, const char *);
191  size_t off;
192  } u;
193  const char *help;
194  const char *argname;
195 } OptionDef;
196 
197 /**
198  * Print help for all options matching specified flags.
199  *
200  * @param options a list of options
201  * @param msg title of this group. Only printed if at least one option matches.
202  * @param req_flags print only options which have all those flags set.
203  * @param rej_flags don't print options which have any of those flags set.
204  * @param alt_flags print only options that have at least one of those flags set
205  */
206 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
207  int rej_flags, int alt_flags);
208 
209 /**
210  * Show help for all options with given flags in class and all its
211  * children.
212  */
213 void show_help_children(const AVClass *class, int flags);
214 
215 /**
216  * Per-fftool specific help handler. Implemented in each
217  * fftool, called by show_help().
218  */
219 void show_help_default(const char *opt, const char *arg);
220 
221 /**
222  * Generic -h handler common to all fftools.
223  */
224 int show_help(void *optctx, const char *opt, const char *arg);
225 
226 /**
227  * Parse the command line arguments.
228  *
229  * @param optctx an opaque options context
230  * @param argc number of command line arguments
231  * @param argv values of command line arguments
232  * @param options Array with the definitions required to interpret every
233  * option of the form: -option_name [argument]
234  * @param parse_arg_function Name of the function called to process every
235  * argument without a leading option name flag. NULL if such arguments do
236  * not have to be processed.
237  */
238 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
239  void (* parse_arg_function)(void *optctx, const char*));
240 
241 /**
242  * Parse one given option.
243  *
244  * @return on success 1 if arg was consumed, 0 otherwise; negative number on error
245  */
246 int parse_option(void *optctx, const char *opt, const char *arg,
247  const OptionDef *options);
248 
249 /**
250  * An option extracted from the commandline.
251  * Cannot use AVDictionary because of options like -map which can be
252  * used multiple times.
253  */
254 typedef struct Option {
255  const OptionDef *opt;
256  const char *key;
257  const char *val;
258 } Option;
259 
260 typedef struct OptionGroupDef {
261  /**< group name */
262  const char *name;
263  /**
264  * Option to be used as group separator. Can be NULL for groups which
265  * are terminated by a non-option argument (e.g. ffmpeg output files)
266  */
267  const char *sep;
268  /**
269  * Option flags that must be set on each option that is
270  * applied to this group
271  */
272  int flags;
274 
275 typedef struct OptionGroup {
277  const char *arg;
278 
280  int nb_opts;
281 
287 } OptionGroup;
288 
289 /**
290  * A list of option groups that all have the same group type
291  * (e.g. input files or output files)
292  */
293 typedef struct OptionGroupList {
295 
299 
300 typedef struct OptionParseContext {
302 
305 
306  /* parsing state */
309 
310 /**
311  * Parse an options group and write results into optctx.
312  *
313  * @param optctx an app-specific options context. NULL for global options group
314  */
315 int parse_optgroup(void *optctx, OptionGroup *g);
316 
317 /**
318  * Split the commandline into an intermediate form convenient for further
319  * processing.
320  *
321  * The commandline is assumed to be composed of options which either belong to a
322  * group (those with OPT_SPEC, OPT_OFFSET or OPT_PERFILE) or are global
323  * (everything else).
324  *
325  * A group (defined by an OptionGroupDef struct) is a sequence of options
326  * terminated by either a group separator option (e.g. -i) or a parameter that
327  * is not an option (doesn't start with -). A group without a separator option
328  * must always be first in the supplied groups list.
329  *
330  * All options within the same group are stored in one OptionGroup struct in an
331  * OptionGroupList, all groups with the same group definition are stored in one
332  * OptionGroupList in OptionParseContext.groups. The order of group lists is the
333  * same as the order of group definitions.
334  */
335 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
336  const OptionDef *options,
337  const OptionGroupDef *groups, int nb_groups);
338 
339 /**
340  * Free all allocated memory in an OptionParseContext.
341  */
343 
344 /**
345  * Find the '-loglevel' option in the command line args and apply it.
346  */
347 void parse_loglevel(int argc, char **argv, const OptionDef *options);
348 
349 /**
350  * Return index of option opt in argv or 0 if not found.
351  */
352 int locate_option(int argc, char **argv, const OptionDef *options,
353  const char *optname);
354 
355 /**
356  * Check if the given stream matches a stream specifier.
357  *
358  * @param s Corresponding format context.
359  * @param st Stream from s to be checked.
360  * @param spec A stream specifier of the [v|a|s|d]:[<stream index>] form.
361  *
362  * @return 1 if the stream matches, 0 if it doesn't, <0 on error
363  */
364 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec);
365 
366 /**
367  * Filter out options for given codec.
368  *
369  * Create a new options dictionary containing only the options from
370  * opts which apply to the codec with ID codec_id.
371  *
372  * @param opts dictionary to place options in
373  * @param codec_id ID of the codec that should be filtered for
374  * @param s Corresponding format context.
375  * @param st A stream from s for which the options should be filtered.
376  * @param codec The particular codec for which the options should be filtered.
377  * If null, the default one is looked up according to the codec id.
378  * @return a pointer to the created dictionary
379  */
381  AVFormatContext *s, AVStream *st, AVCodec *codec);
382 
383 /**
384  * Setup AVCodecContext options for avformat_find_stream_info().
385  *
386  * Create an array of dictionaries, one dictionary for each stream
387  * contained in s.
388  * Each dictionary will contain the options from codec_opts which can
389  * be applied to the corresponding stream codec context.
390  *
391  * @return pointer to the created array of dictionaries, NULL if it
392  * cannot be created
393  */
395  AVDictionary *codec_opts);
396 
397 /**
398  * Print an error message to stderr, indicating filename and a human
399  * readable description of the error code err.
400  *
401  * If strerror_r() is not available the use of this function in a
402  * multithreaded application may be unsafe.
403  *
404  * @see av_strerror()
405  */
406 void print_error(const char *filename, int err);
407 
408 /**
409  * Print the program banner to stderr. The banner contents depend on the
410  * current version of the repository and of the libav* libraries used by
411  * the program.
412  */
413 void show_banner(int argc, char **argv, const OptionDef *options);
414 
415 /**
416  * Print the version of the program to stdout. The version message
417  * depends on the current versions of the repository and of the libav*
418  * libraries.
419  * This option processing function does not utilize the arguments.
420  */
421 int show_version(void *optctx, const char *opt, const char *arg);
422 
423 /**
424  * Print the build configuration of the program to stdout. The contents
425  * depend on the definition of FFMPEG_CONFIGURATION.
426  * This option processing function does not utilize the arguments.
427  */
428 int show_buildconf(void *optctx, const char *opt, const char *arg);
429 
430 /**
431  * Print the license of the program to stdout. The license depends on
432  * the license of the libraries compiled into the program.
433  * This option processing function does not utilize the arguments.
434  */
435 int show_license(void *optctx, const char *opt, const char *arg);
436 
437 /**
438  * Print a listing containing all the formats supported by the
439  * program (including devices).
440  * This option processing function does not utilize the arguments.
441  */
442 int show_formats(void *optctx, const char *opt, const char *arg);
443 
444 /**
445  * Print a listing containing all the muxers supported by the
446  * program (including devices).
447  * This option processing function does not utilize the arguments.
448  */
449 int show_muxers(void *optctx, const char *opt, const char *arg);
450 
451 /**
452  * Print a listing containing all the demuxer supported by the
453  * program (including devices).
454  * This option processing function does not utilize the arguments.
455  */
456 int show_demuxers(void *optctx, const char *opt, const char *arg);
457 
458 /**
459  * Print a listing containing all the devices supported by the
460  * program.
461  * This option processing function does not utilize the arguments.
462  */
463 int show_devices(void *optctx, const char *opt, const char *arg);
464 
465 #if CONFIG_AVDEVICE
466 /**
467  * Print a listing containing autodetected sinks of the output device.
468  * Device name with options may be passed as an argument to limit results.
469  */
470 int show_sinks(void *optctx, const char *opt, const char *arg);
471 
472 /**
473  * Print a listing containing autodetected sources of the input device.
474  * Device name with options may be passed as an argument to limit results.
475  */
476 int show_sources(void *optctx, const char *opt, const char *arg);
477 #endif
478 
479 /**
480  * Print a listing containing all the codecs supported by the
481  * program.
482  * This option processing function does not utilize the arguments.
483  */
484 int show_codecs(void *optctx, const char *opt, const char *arg);
485 
486 /**
487  * Print a listing containing all the decoders supported by the
488  * program.
489  */
490 int show_decoders(void *optctx, const char *opt, const char *arg);
491 
492 /**
493  * Print a listing containing all the encoders supported by the
494  * program.
495  */
496 int show_encoders(void *optctx, const char *opt, const char *arg);
497 
498 /**
499  * Print a listing containing all the filters supported by the
500  * program.
501  * This option processing function does not utilize the arguments.
502  */
503 int show_filters(void *optctx, const char *opt, const char *arg);
504 
505 /**
506  * Print a listing containing all the bit stream filters supported by the
507  * program.
508  * This option processing function does not utilize the arguments.
509  */
510 int show_bsfs(void *optctx, const char *opt, const char *arg);
511 
512 /**
513  * Print a listing containing all the protocols supported by the
514  * program.
515  * This option processing function does not utilize the arguments.
516  */
517 int show_protocols(void *optctx, const char *opt, const char *arg);
518 
519 /**
520  * Print a listing containing all the pixel formats supported by the
521  * program.
522  * This option processing function does not utilize the arguments.
523  */
524 int show_pix_fmts(void *optctx, const char *opt, const char *arg);
525 
526 /**
527  * Print a listing containing all the standard channel layouts supported by
528  * the program.
529  * This option processing function does not utilize the arguments.
530  */
531 int show_layouts(void *optctx, const char *opt, const char *arg);
532 
533 /**
534  * Print a listing containing all the sample formats supported by the
535  * program.
536  */
537 int show_sample_fmts(void *optctx, const char *opt, const char *arg);
538 
539 /**
540  * Print a listing containing all the color names and values recognized
541  * by the program.
542  */
543 int show_colors(void *optctx, const char *opt, const char *arg);
544 
545 /**
546  * Return a positive value if a line read from standard input
547  * starts with [yY], otherwise return 0.
548  */
549 int read_yesno(void);
550 
551 /**
552  * Get a file corresponding to a preset file.
553  *
554  * If is_path is non-zero, look for the file in the path preset_name.
555  * Otherwise search for a file named arg.ffpreset in the directories
556  * $FFMPEG_DATADIR (if set), $HOME/.ffmpeg, and in the datadir defined
557  * at configuration time or in a "ffpresets" folder along the executable
558  * on win32, in that order. If no such file is found and
559  * codec_name is defined, then search for a file named
560  * codec_name-preset_name.avpreset in the above-mentioned directories.
561  *
562  * @param filename buffer where the name of the found filename is written
563  * @param filename_size size in bytes of the filename buffer
564  * @param preset_name name of the preset to search
565  * @param is_path tell if preset_name is a filename path
566  * @param codec_name name of the codec for which to look for the
567  * preset, may be NULL
568  */
569 FILE *get_preset_file(char *filename, size_t filename_size,
570  const char *preset_name, int is_path, const char *codec_name);
571 
572 /**
573  * Realloc array to hold new_size elements of elem_size.
574  * Calls exit() on failure.
575  *
576  * @param array array to reallocate
577  * @param elem_size size in bytes of each element
578  * @param size new element count will be written here
579  * @param new_size number of elements to place in reallocated array
580  * @return reallocated array
581  */
582 void *grow_array(void *array, int elem_size, int *size, int new_size);
583 
584 #define media_type_string av_get_media_type_string
585 
586 #define GROW_ARRAY(array, nb_elems)\
587  array = grow_array(array, sizeof(*array), &nb_elems, nb_elems + 1)
588 
589 #define GET_PIX_FMT_NAME(pix_fmt)\
590  const char *name = av_get_pix_fmt_name(pix_fmt);
591 
592 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
593  const char *name = av_get_sample_fmt_name(sample_fmt)
594 
595 #define GET_SAMPLE_RATE_NAME(rate)\
596  char name[16];\
597  snprintf(name, sizeof(name), "%d", rate);
598 
599 #define GET_CH_LAYOUT_NAME(ch_layout)\
600  char name[16];\
601  snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
602 
603 #define GET_CH_LAYOUT_DESC(ch_layout)\
604  char name[128];\
605  av_get_channel_layout_string(name, sizeof(name), 0, ch_layout);
606 
607 double get_rotation(AVStream *st);
608 
609 #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:446
int show_bsfs(void *optctx, const char *opt, const char *arg)
Print a listing containing all the bit stream filters supported by the program.
Definition: cmdutils.c:1599
int opt_codec_debug(void *optctx, const char *opt, const char *arg)
AVDictionary * resample_opts
Definition: cmdutils.h:284
const char * s
Definition: avisynth_c.h:768
enum AVCodecID codec_id
Definition: ffmpeg_vaapi.c:149
AVDictionary * swr_opts
Definition: cmdutils.h:286
int show_pix_fmts(void *optctx, const char *opt, const char *arg)
Print a listing containing all the pixel formats supported by the program.
Definition: cmdutils.c:1686
const char * name
< group name
Definition: cmdutils.h:262
int parse_optgroup(void *optctx, OptionGroup *g)
Parse an options group and write results into optctx.
Definition: cmdutils.c:413
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the given stream matches a stream specifier.
Definition: cmdutils.c:1994
void uninit_parse_context(OptionParseContext *octx)
Free all allocated memory in an OptionParseContext.
Definition: cmdutils.c:726
const char * fmt
Definition: avisynth_c.h:769
int(* func_arg)(void *, const char *, const char *)
Definition: cmdutils.h:190
Main libavfilter public API header.
const char * g
Definition: vf_curves.c:112
double dbl
Definition: cmdutils.h:159
const char * arg
Definition: cmdutils.h:277
AVCodecContext * avcodec_opts[AVMEDIA_TYPE_NB]
const char * sep
Option to be used as group separator.
Definition: cmdutils.h:267
int hide_banner
Definition: cmdutils.c:76
AVCodec.
Definition: avcodec.h:3601
int show_decoders(void *optctx, const char *opt, const char *arg)
Print a listing containing all the decoders supported by the program.
Definition: cmdutils.c:1587
void register_exit(void(*cb)(int ret))
Register a program-specific cleanup routine.
Definition: cmdutils.c:130
Format I/O context.
Definition: avformat.h:1338
int opt_max_alloc(void *optctx, const char *opt, const char *arg)
Definition: cmdutils.c:1024
AVDictionary * format_opts
Definition: cmdutils.c:72
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:143
static const OptionGroupDef groups[]
Definition: ffmpeg_opt.c:3197
int opt_timelimit(void *optctx, const char *opt, const char *arg)
Limit the execution time.
Definition: cmdutils.c:1038
int show_protocols(void *optctx, const char *opt, const char *arg)
Print a listing containing all the protocols supported by the program.
Definition: cmdutils.c:1611
int nb_opts
Definition: cmdutils.h:280
void parse_loglevel(int argc, char **argv, const OptionDef *options)
Find the '-loglevel' option in the command line args and apply it.
Definition: cmdutils.c:505
static int flags
Definition: log.c:57
external API header
ptrdiff_t size
Definition: opengl_enc.c:101
const OptionDef options[]
Definition: ffserver.c:3950
void uninit_opts(void)
Uninitialize the cmdutils option system, in particular free the *_opts contexts and their contents...
Definition: cmdutils.c:89
int flags
Option flags that must be set on each option that is applied to this group.
Definition: cmdutils.h:272
int show_license(void *optctx, const char *opt, const char *arg)
Print the license of the program to stdout.
Definition: cmdutils.c:1178
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:191
AVDictionary * swr_opts
Definition: cmdutils.c:71
int show_layouts(void *optctx, const char *opt, const char *arg)
Print a listing containing all the standard channel layouts supported by the program.
Definition: cmdutils.c:1719
int show_buildconf(void *optctx, const char *opt, const char *arg)
Print the build configuration of the program to stdout.
Definition: cmdutils.c:1170
void init_opts(void)
Initialize the cmdutils option system, in particular allocate the *_opts contexts.
Definition: cmdutils.c:84
const char * arg
Definition: jacosubdec.c:66
const char * name
Definition: cmdutils.h:164
int flags
Definition: cmdutils.h:165
const char * val
Definition: cmdutils.h:257
int show_demuxers(void *optctx, const char *opt, const char *arg)
Print a listing containing all the demuxer supported by the program (including devices).
Definition: cmdutils.c:1328
int show_colors(void *optctx, const char *opt, const char *arg)
Print a listing containing all the color names and values recognized by the program.
Definition: cmdutils.c:1672
const int program_birth_year
program birth year, defined by the program for show_banner()
Definition: ffmpeg.c:110
AVDictionary ** setup_find_stream_info_opts(AVFormatContext *s, AVDictionary *codec_opts)
Setup AVCodecContext options for avformat_find_stream_info().
Definition: cmdutils.c:2059
AVDictionary * opts
Definition: movenc.c:50
OptionGroup * groups
Definition: cmdutils.h:296
size_t off
Definition: cmdutils.h:191
AVDictionary * sws_dict
Definition: cmdutils.c:70
int opt_opencl(void *optctx, const char *opt, const char *arg)
int64_t i64
Definition: cmdutils.h:157
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
void show_help_default(const char *opt, const char *arg)
Per-fftool specific help handler.
Definition: ffmpeg_opt.c:3116
FILE * get_preset_file(char *filename, size_t filename_size, const char *preset_name, int is_path, const char *codec_name)
Get a file corresponding to a preset file.
Definition: cmdutils.c:1944
int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options)
Parse one given option.
Definition: cmdutils.c:349
int opt_default(void *optctx, const char *opt, const char *arg)
Fallback for options that are not explicitly handled, these will be parsed through AVOptions...
Definition: cmdutils.c:544
char * specifier
stream/chapter/program/...
Definition: cmdutils.h:153
void * dst_ptr
Definition: cmdutils.h:189
int opt_loglevel(void *optctx, const char *opt, const char *arg)
Set the libav* libraries log level.
Definition: cmdutils.c:870
uint8_t * str
Definition: cmdutils.h:155
int opt_report(const char *opt)
Definition: cmdutils.c:1019
Stream structure.
Definition: avformat.h:889
int show_version(void *optctx, const char *opt, const char *arg)
Print the version of the program to stdout.
Definition: cmdutils.c:1161
void show_banner(int argc, char **argv, const OptionDef *options)
Print the program banner to stderr.
Definition: cmdutils.c:1150
Libavcodec external API header.
const char * help
Definition: cmdutils.h:193
int show_formats(void *optctx, const char *opt, const char *arg)
Print a listing containing all the formats supported by the program (including devices).
Definition: cmdutils.c:1318
main external API structure.
Definition: avcodec.h:1676
int show_devices(void *optctx, const char *opt, const char *arg)
Print a listing containing all the devices supported by the program.
Definition: cmdutils.c:1333
int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration)
Parse a string specifying a time and return its corresponding value as a number of microseconds...
Definition: cmdutils.c:164
AVDictionary * codec_opts
Definition: cmdutils.c:72
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:2002
const OptionGroupDef * group_def
Definition: cmdutils.h:276
Describe the class of an AVClass context structure.
Definition: log.h:67
const char * argname
Definition: cmdutils.h:194
int show_codecs(void *optctx, const char *opt, const char *arg)
Print a listing containing all the codecs supported by the program.
Definition: cmdutils.c:1494
int split_commandline(OptionParseContext *octx, int argc, char *argv[], const OptionDef *options, const OptionGroupDef *groups, int nb_groups)
Split the commandline into an intermediate form convenient for further processing.
Definition: cmdutils.c:752
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:135
int show_muxers(void *optctx, const char *opt, const char *arg)
Print a listing containing all the muxers supported by the program (including devices).
Definition: cmdutils.c:1323
An option extracted from the commandline.
Definition: cmdutils.h:254
Main libavformat public API header.
int
AVDictionary * format_opts
Definition: cmdutils.h:283
#define av_noreturn
Definition: attributes.h:163
OptionGroupList * groups
Definition: cmdutils.h:303
void show_help_options(const OptionDef *options, const char *msg, int req_flags, int rej_flags, int alt_flags)
Print help for all options matching specified flags.
Definition: cmdutils.c:176
OptionGroup global_opts
Definition: cmdutils.h:301
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:2079
const char * key
Definition: cmdutils.h:256
int show_encoders(void *optctx, const char *opt, const char *arg)
Print a listing containing all the encoders supported by the program.
Definition: cmdutils.c:1593
void show_help_children(const AVClass *class, int flags)
Show help for all options with given flags in class and all its children.
Definition: cmdutils.c:205
int show_help(void *optctx, const char *opt, const char *arg)
Generic -h handler common to all fftools.
Definition: cmdutils.c:1899
const OptionDef * opt
Definition: cmdutils.h:255
AVDictionary * resample_opts
Definition: cmdutils.c:72
int show_sample_fmts(void *optctx, const char *opt, const char *arg)
Print a listing containing all the sample formats supported by the program.
Definition: cmdutils.c:1748
union SpecifierOpt::@0 u
OptionGroup cur_group
Definition: cmdutils.h:307
AVDictionary * codec_opts
Definition: cmdutils.h:282
Option * opts
Definition: cmdutils.h:279
void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
Trivial log callback.
Definition: cmdutils.c:98
union OptionDef::@1 u
double get_rotation(AVStream *st)
Definition: cmdutils.c:2098
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:1051
AVDictionary * sws_dict
Definition: cmdutils.h:285
int show_filters(void *optctx, const char *opt, const char *arg)
Print a listing containing all the filters supported by the program.
Definition: cmdutils.c:1626
void init_dynload(void)
Initialize dynamic library loading.
Definition: cmdutils.c:119
int opt_cpuflags(void *optctx, const char *opt, const char *arg)
Override the cpuflags.
Definition: cmdutils.c:858
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:1933
const char program_name[]
program name, defined by the program for show_version().
Definition: ffmpeg.c:109
int opt_opencl_bench(void *optctx, const char *opt, const char *arg)