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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 #if CONFIG_OPENCL
210 #define CMDUTILS_COMMON_OPTIONS_OPENCL \
211  { "opencl_bench", OPT_EXIT, {.func_arg = opt_opencl_bench}, \
212  "run benchmark on all OpenCL devices and show results" }, \
213  { "opencl_options", HAS_ARG, {.func_arg = opt_opencl}, \
214  "set OpenCL environment options" }, \
215 
216 #else
217 #define CMDUTILS_COMMON_OPTIONS_OPENCL
218 #endif
219 
220 #if CONFIG_AVDEVICE
221 #define CMDUTILS_COMMON_OPTIONS_AVDEVICE \
222  { "sources" , OPT_EXIT | HAS_ARG, { .func_arg = show_sources }, \
223  "list sources of the input device", "device" }, \
224  { "sinks" , OPT_EXIT | HAS_ARG, { .func_arg = show_sinks }, \
225  "list sinks of the output device", "device" }, \
226 
227 #else
228 #define CMDUTILS_COMMON_OPTIONS_AVDEVICE
229 #endif
230 
231 #define CMDUTILS_COMMON_OPTIONS \
232  { "L", OPT_EXIT, { .func_arg = show_license }, "show license" }, \
233  { "h", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
234  { "?", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
235  { "help", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
236  { "-help", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
237  { "version", OPT_EXIT, { .func_arg = show_version }, "show version" }, \
238  { "buildconf", OPT_EXIT, { .func_arg = show_buildconf }, "show build configuration" }, \
239  { "formats", OPT_EXIT, { .func_arg = show_formats }, "show available formats" }, \
240  { "muxers", OPT_EXIT, { .func_arg = show_muxers }, "show available muxers" }, \
241  { "demuxers", OPT_EXIT, { .func_arg = show_demuxers }, "show available demuxers" }, \
242  { "devices", OPT_EXIT, { .func_arg = show_devices }, "show available devices" }, \
243  { "codecs", OPT_EXIT, { .func_arg = show_codecs }, "show available codecs" }, \
244  { "decoders", OPT_EXIT, { .func_arg = show_decoders }, "show available decoders" }, \
245  { "encoders", OPT_EXIT, { .func_arg = show_encoders }, "show available encoders" }, \
246  { "bsfs", OPT_EXIT, { .func_arg = show_bsfs }, "show available bit stream filters" }, \
247  { "protocols", OPT_EXIT, { .func_arg = show_protocols }, "show available protocols" }, \
248  { "filters", OPT_EXIT, { .func_arg = show_filters }, "show available filters" }, \
249  { "pix_fmts", OPT_EXIT, { .func_arg = show_pix_fmts }, "show available pixel formats" }, \
250  { "layouts", OPT_EXIT, { .func_arg = show_layouts }, "show standard channel layouts" }, \
251  { "sample_fmts", OPT_EXIT, { .func_arg = show_sample_fmts }, "show available audio sample formats" }, \
252  { "colors", OPT_EXIT, { .func_arg = show_colors }, "show available color names" }, \
253  { "loglevel", HAS_ARG, { .func_arg = opt_loglevel }, "set logging level", "loglevel" }, \
254  { "v", HAS_ARG, { .func_arg = opt_loglevel }, "set logging level", "loglevel" }, \
255  { "report", 0, { (void*)opt_report }, "generate a report" }, \
256  { "max_alloc", HAS_ARG, { .func_arg = opt_max_alloc }, "set maximum size of a single allocated block", "bytes" }, \
257  { "cpuflags", HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpuflags }, "force specific cpu flags", "flags" }, \
258  { "hide_banner", OPT_BOOL | OPT_EXPERT, {&hide_banner}, "do not show program banner", "hide_banner" }, \
259  CMDUTILS_COMMON_OPTIONS_OPENCL \
260  CMDUTILS_COMMON_OPTIONS_AVDEVICE \
261 
262 /**
263  * Show help for all options with given flags in class and all its
264  * children.
265  */
266 void show_help_children(const AVClass *class, int flags);
267 
268 /**
269  * Per-fftool specific help handler. Implemented in each
270  * fftool, called by show_help().
271  */
272 void show_help_default(const char *opt, const char *arg);
273 
274 /**
275  * Generic -h handler common to all fftools.
276  */
277 int show_help(void *optctx, const char *opt, const char *arg);
278 
279 /**
280  * Parse the command line arguments.
281  *
282  * @param optctx an opaque options context
283  * @param argc number of command line arguments
284  * @param argv values of command line arguments
285  * @param options Array with the definitions required to interpret every
286  * option of the form: -option_name [argument]
287  * @param parse_arg_function Name of the function called to process every
288  * argument without a leading option name flag. NULL if such arguments do
289  * not have to be processed.
290  */
291 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
292  void (* parse_arg_function)(void *optctx, const char*));
293 
294 /**
295  * Parse one given option.
296  *
297  * @return on success 1 if arg was consumed, 0 otherwise; negative number on error
298  */
299 int parse_option(void *optctx, const char *opt, const char *arg,
300  const OptionDef *options);
301 
302 /**
303  * An option extracted from the commandline.
304  * Cannot use AVDictionary because of options like -map which can be
305  * used multiple times.
306  */
307 typedef struct Option {
308  const OptionDef *opt;
309  const char *key;
310  const char *val;
311 } Option;
312 
313 typedef struct OptionGroupDef {
314  /**< group name */
315  const char *name;
316  /**
317  * Option to be used as group separator. Can be NULL for groups which
318  * are terminated by a non-option argument (e.g. ffmpeg output files)
319  */
320  const char *sep;
321  /**
322  * Option flags that must be set on each option that is
323  * applied to this group
324  */
325  int flags;
327 
328 typedef struct OptionGroup {
330  const char *arg;
331 
333  int nb_opts;
334 
340 } OptionGroup;
341 
342 /**
343  * A list of option groups that all have the same group type
344  * (e.g. input files or output files)
345  */
346 typedef struct OptionGroupList {
348 
352 
353 typedef struct OptionParseContext {
355 
358 
359  /* parsing state */
362 
363 /**
364  * Parse an options group and write results into optctx.
365  *
366  * @param optctx an app-specific options context. NULL for global options group
367  */
368 int parse_optgroup(void *optctx, OptionGroup *g);
369 
370 /**
371  * Split the commandline into an intermediate form convenient for further
372  * processing.
373  *
374  * The commandline is assumed to be composed of options which either belong to a
375  * group (those with OPT_SPEC, OPT_OFFSET or OPT_PERFILE) or are global
376  * (everything else).
377  *
378  * A group (defined by an OptionGroupDef struct) is a sequence of options
379  * terminated by either a group separator option (e.g. -i) or a parameter that
380  * is not an option (doesn't start with -). A group without a separator option
381  * must always be first in the supplied groups list.
382  *
383  * All options within the same group are stored in one OptionGroup struct in an
384  * OptionGroupList, all groups with the same group definition are stored in one
385  * OptionGroupList in OptionParseContext.groups. The order of group lists is the
386  * same as the order of group definitions.
387  */
388 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
389  const OptionDef *options,
390  const OptionGroupDef *groups, int nb_groups);
391 
392 /**
393  * Free all allocated memory in an OptionParseContext.
394  */
396 
397 /**
398  * Find the '-loglevel' option in the command line args and apply it.
399  */
400 void parse_loglevel(int argc, char **argv, const OptionDef *options);
401 
402 /**
403  * Return index of option opt in argv or 0 if not found.
404  */
405 int locate_option(int argc, char **argv, const OptionDef *options,
406  const char *optname);
407 
408 /**
409  * Check if the given stream matches a stream specifier.
410  *
411  * @param s Corresponding format context.
412  * @param st Stream from s to be checked.
413  * @param spec A stream specifier of the [v|a|s|d]:[<stream index>] form.
414  *
415  * @return 1 if the stream matches, 0 if it doesn't, <0 on error
416  */
417 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec);
418 
419 /**
420  * Filter out options for given codec.
421  *
422  * Create a new options dictionary containing only the options from
423  * opts which apply to the codec with ID codec_id.
424  *
425  * @param opts dictionary to place options in
426  * @param codec_id ID of the codec that should be filtered for
427  * @param s Corresponding format context.
428  * @param st A stream from s for which the options should be filtered.
429  * @param codec The particular codec for which the options should be filtered.
430  * If null, the default one is looked up according to the codec id.
431  * @return a pointer to the created dictionary
432  */
434  AVFormatContext *s, AVStream *st, AVCodec *codec);
435 
436 /**
437  * Setup AVCodecContext options for avformat_find_stream_info().
438  *
439  * Create an array of dictionaries, one dictionary for each stream
440  * contained in s.
441  * Each dictionary will contain the options from codec_opts which can
442  * be applied to the corresponding stream codec context.
443  *
444  * @return pointer to the created array of dictionaries, NULL if it
445  * cannot be created
446  */
448  AVDictionary *codec_opts);
449 
450 /**
451  * Print an error message to stderr, indicating filename and a human
452  * readable description of the error code err.
453  *
454  * If strerror_r() is not available the use of this function in a
455  * multithreaded application may be unsafe.
456  *
457  * @see av_strerror()
458  */
459 void print_error(const char *filename, int err);
460 
461 /**
462  * Print the program banner to stderr. The banner contents depend on the
463  * current version of the repository and of the libav* libraries used by
464  * the program.
465  */
466 void show_banner(int argc, char **argv, const OptionDef *options);
467 
468 /**
469  * Print the version of the program to stdout. The version message
470  * depends on the current versions of the repository and of the libav*
471  * libraries.
472  * This option processing function does not utilize the arguments.
473  */
474 int show_version(void *optctx, const char *opt, const char *arg);
475 
476 /**
477  * Print the build configuration of the program to stdout. The contents
478  * depend on the definition of FFMPEG_CONFIGURATION.
479  * This option processing function does not utilize the arguments.
480  */
481 int show_buildconf(void *optctx, const char *opt, const char *arg);
482 
483 /**
484  * Print the license of the program to stdout. The license depends on
485  * the license of the libraries compiled into the program.
486  * This option processing function does not utilize the arguments.
487  */
488 int show_license(void *optctx, const char *opt, const char *arg);
489 
490 /**
491  * Print a listing containing all the formats supported by the
492  * program (including devices).
493  * This option processing function does not utilize the arguments.
494  */
495 int show_formats(void *optctx, const char *opt, const char *arg);
496 
497 /**
498  * Print a listing containing all the muxers supported by the
499  * program (including devices).
500  * This option processing function does not utilize the arguments.
501  */
502 int show_muxers(void *optctx, const char *opt, const char *arg);
503 
504 /**
505  * Print a listing containing all the demuxer supported by the
506  * program (including devices).
507  * This option processing function does not utilize the arguments.
508  */
509 int show_demuxers(void *optctx, const char *opt, const char *arg);
510 
511 /**
512  * Print a listing containing all the devices supported by the
513  * program.
514  * This option processing function does not utilize the arguments.
515  */
516 int show_devices(void *optctx, const char *opt, const char *arg);
517 
518 #if CONFIG_AVDEVICE
519 /**
520  * Print a listing containing autodetected sinks of the output device.
521  * Device name with options may be passed as an argument to limit results.
522  */
523 int show_sinks(void *optctx, const char *opt, const char *arg);
524 
525 /**
526  * Print a listing containing autodetected sources of the input device.
527  * Device name with options may be passed as an argument to limit results.
528  */
529 int show_sources(void *optctx, const char *opt, const char *arg);
530 #endif
531 
532 /**
533  * Print a listing containing all the codecs supported by the
534  * program.
535  * This option processing function does not utilize the arguments.
536  */
537 int show_codecs(void *optctx, const char *opt, const char *arg);
538 
539 /**
540  * Print a listing containing all the decoders supported by the
541  * program.
542  */
543 int show_decoders(void *optctx, const char *opt, const char *arg);
544 
545 /**
546  * Print a listing containing all the encoders supported by the
547  * program.
548  */
549 int show_encoders(void *optctx, const char *opt, const char *arg);
550 
551 /**
552  * Print a listing containing all the filters supported by the
553  * program.
554  * This option processing function does not utilize the arguments.
555  */
556 int show_filters(void *optctx, const char *opt, const char *arg);
557 
558 /**
559  * Print a listing containing all the bit stream filters supported by the
560  * program.
561  * This option processing function does not utilize the arguments.
562  */
563 int show_bsfs(void *optctx, const char *opt, const char *arg);
564 
565 /**
566  * Print a listing containing all the protocols supported by the
567  * program.
568  * This option processing function does not utilize the arguments.
569  */
570 int show_protocols(void *optctx, const char *opt, const char *arg);
571 
572 /**
573  * Print a listing containing all the pixel formats supported by the
574  * program.
575  * This option processing function does not utilize the arguments.
576  */
577 int show_pix_fmts(void *optctx, const char *opt, const char *arg);
578 
579 /**
580  * Print a listing containing all the standard channel layouts supported by
581  * the program.
582  * This option processing function does not utilize the arguments.
583  */
584 int show_layouts(void *optctx, const char *opt, const char *arg);
585 
586 /**
587  * Print a listing containing all the sample formats supported by the
588  * program.
589  */
590 int show_sample_fmts(void *optctx, const char *opt, const char *arg);
591 
592 /**
593  * Print a listing containing all the color names and values recognized
594  * by the program.
595  */
596 int show_colors(void *optctx, const char *opt, const char *arg);
597 
598 /**
599  * Return a positive value if a line read from standard input
600  * starts with [yY], otherwise return 0.
601  */
602 int read_yesno(void);
603 
604 /**
605  * Get a file corresponding to a preset file.
606  *
607  * If is_path is non-zero, look for the file in the path preset_name.
608  * Otherwise search for a file named arg.ffpreset in the directories
609  * $FFMPEG_DATADIR (if set), $HOME/.ffmpeg, and in the datadir defined
610  * at configuration time or in a "ffpresets" folder along the executable
611  * on win32, in that order. If no such file is found and
612  * codec_name is defined, then search for a file named
613  * codec_name-preset_name.avpreset in the above-mentioned directories.
614  *
615  * @param filename buffer where the name of the found filename is written
616  * @param filename_size size in bytes of the filename buffer
617  * @param preset_name name of the preset to search
618  * @param is_path tell if preset_name is a filename path
619  * @param codec_name name of the codec for which to look for the
620  * preset, may be NULL
621  */
622 FILE *get_preset_file(char *filename, size_t filename_size,
623  const char *preset_name, int is_path, const char *codec_name);
624 
625 /**
626  * Realloc array to hold new_size elements of elem_size.
627  * Calls exit() on failure.
628  *
629  * @param array array to reallocate
630  * @param elem_size size in bytes of each element
631  * @param size new element count will be written here
632  * @param new_size number of elements to place in reallocated array
633  * @return reallocated array
634  */
635 void *grow_array(void *array, int elem_size, int *size, int new_size);
636 
637 #define media_type_string av_get_media_type_string
638 
639 #define GROW_ARRAY(array, nb_elems)\
640  array = grow_array(array, sizeof(*array), &nb_elems, nb_elems + 1)
641 
642 #define GET_PIX_FMT_NAME(pix_fmt)\
643  const char *name = av_get_pix_fmt_name(pix_fmt);
644 
645 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
646  const char *name = av_get_sample_fmt_name(sample_fmt)
647 
648 #define GET_SAMPLE_RATE_NAME(rate)\
649  char name[16];\
650  snprintf(name, sizeof(name), "%d", rate);
651 
652 #define GET_CH_LAYOUT_NAME(ch_layout)\
653  char name[16];\
654  snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
655 
656 #define GET_CH_LAYOUT_DESC(ch_layout)\
657  char name[128];\
658  av_get_channel_layout_string(name, sizeof(name), 0, ch_layout);
659 
660 double get_rotation(AVStream *st);
661 
662 #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:337
const char * s
Definition: avisynth_c.h:768
AVDictionary * swr_opts
Definition: cmdutils.h:339
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:315
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:330
AVCodecContext * avcodec_opts[AVMEDIA_TYPE_NB]
const char * sep
Option to be used as group separator.
Definition: cmdutils.h:320
int hide_banner
Definition: cmdutils.c:76
AVCodec.
Definition: avcodec.h:3730
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:1349
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: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:143
static const OptionGroupDef groups[]
Definition: ffmpeg_opt.c:3253
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:333
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:3952
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:325
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:214
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:310
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:113
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:349
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:347
A list of option groups that all have the same group type (e.g.
Definition: cmdutils.h:346
void show_help_default(const char *opt, const char *arg)
Per-fftool specific help handler.
Definition: ffmpeg_opt.c:3172
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
enum AVCodecID codec_id
Definition: vaapi_decode.c:235
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:1754
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:329
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:307
Main libavformat public API header.
int
AVDictionary * format_opts
Definition: cmdutils.h:336
#define av_noreturn
Definition: attributes.h:162
OptionGroupList * groups
Definition: cmdutils.h:356
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:354
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:309
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:308
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:360
AVDictionary * codec_opts
Definition: cmdutils.h:335
Option * opts
Definition: cmdutils.h:332
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:338
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:112
int opt_opencl_bench(void *optctx, const char *opt, const char *arg)