FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
cmdutils.h
Go to the documentation of this file.
1 /*
2  * Various utilities for command line tools
3  * copyright (c) 2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef FFTOOLS_CMDUTILS_H
23 #define FFTOOLS_CMDUTILS_H
24 
25 #include <stdint.h>
26 
27 #include "config.h"
28 #include "libavcodec/avcodec.h"
29 #include "libavfilter/avfilter.h"
30 #include "libavformat/avformat.h"
31 #include "libswscale/swscale.h"
32 
33 #ifdef _WIN32
34 #undef main /* We don't want SDL to override our main() */
35 #endif
36 
37 /**
38  * program name, defined by the program for show_version().
39  */
40 extern const char program_name[];
41 
42 /**
43  * program birth year, defined by the program for show_banner()
44  */
45 extern const int program_birth_year;
46 
49 extern AVDictionary *sws_dict;
50 extern AVDictionary *swr_opts;
52 extern int hide_banner;
53 
54 /**
55  * Register a program-specific cleanup routine.
56  */
57 void register_exit(void (*cb)(int ret));
58 
59 /**
60  * Wraps exit with a program-specific cleanup routine.
61  */
62 void exit_program(int ret) av_noreturn;
63 
64 /**
65  * Initialize dynamic library loading
66  */
67 void init_dynload(void);
68 
69 /**
70  * Initialize the cmdutils option system, in particular
71  * allocate the *_opts contexts.
72  */
73 void init_opts(void);
74 /**
75  * Uninitialize the cmdutils option system, in particular
76  * free the *_opts contexts and their contents.
77  */
78 void uninit_opts(void);
79 
80 /**
81  * Trivial log callback.
82  * Only suitable for opt_help and similar since it lacks prefix handling.
83  */
84 void log_callback_help(void* ptr, int level, const char* fmt, va_list vl);
85 
86 /**
87  * Override the cpuflags.
88  */
89 int opt_cpuflags(void *optctx, const char *opt, const char *arg);
90 
91 /**
92  * Fallback for options that are not explicitly handled, these will be
93  * parsed through AVOptions.
94  */
95 int opt_default(void *optctx, const char *opt, const char *arg);
96 
97 /**
98  * Set the libav* libraries log level.
99  */
100 int opt_loglevel(void *optctx, const char *opt, const char *arg);
101 
102 int opt_report(const char *opt);
103 
104 int opt_max_alloc(void *optctx, const char *opt, const char *arg);
105 
106 int opt_codec_debug(void *optctx, const char *opt, const char *arg);
107 
108 #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  uint64_t ui64;
159  float f;
160  double dbl;
161  } u;
162 } SpecifierOpt;
163 
164 typedef struct OptionDef {
165  const char *name;
166  int flags;
167 #define HAS_ARG 0x0001
168 #define OPT_BOOL 0x0002
169 #define OPT_EXPERT 0x0004
170 #define OPT_STRING 0x0008
171 #define OPT_VIDEO 0x0010
172 #define OPT_AUDIO 0x0020
173 #define OPT_INT 0x0080
174 #define OPT_FLOAT 0x0100
175 #define OPT_SUBTITLE 0x0200
176 #define OPT_INT64 0x0400
177 #define OPT_EXIT 0x0800
178 #define OPT_DATA 0x1000
179 #define OPT_PERFILE 0x2000 /* the option is per-file (currently ffmpeg-only).
180  implied by OPT_OFFSET or OPT_SPEC */
181 #define OPT_OFFSET 0x4000 /* option is specified as an offset in a passed optctx */
182 #define OPT_SPEC 0x8000 /* option is to be stored in an array of SpecifierOpt.
183  Implies OPT_OFFSET. Next element after the offset is
184  an int containing element count in the array. */
185 #define OPT_TIME 0x10000
186 #define OPT_DOUBLE 0x20000
187 #define OPT_INPUT 0x40000
188 #define OPT_OUTPUT 0x80000
189  union {
190  void *dst_ptr;
191  int (*func_arg)(void *, const char *, const char *);
192  size_t off;
193  } u;
194  const char *help;
195  const char *argname;
196 } OptionDef;
197 
198 /**
199  * Print help for all options matching specified flags.
200  *
201  * @param options a list of options
202  * @param msg title of this group. Only printed if at least one option matches.
203  * @param req_flags print only options which have all those flags set.
204  * @param rej_flags don't print options which have any of those flags set.
205  * @param alt_flags print only options that have at least one of those flags set
206  */
207 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
208  int rej_flags, int alt_flags);
209 
210 #if CONFIG_OPENCL
211 #define CMDUTILS_COMMON_OPTIONS_OPENCL \
212  { "opencl_bench", OPT_EXIT, {.func_arg = opt_opencl_bench}, \
213  "run benchmark on all OpenCL devices and show results" }, \
214  { "opencl_options", HAS_ARG, {.func_arg = opt_opencl}, \
215  "set OpenCL environment options" }, \
216 
217 #else
218 #define CMDUTILS_COMMON_OPTIONS_OPENCL
219 #endif
220 
221 #if CONFIG_AVDEVICE
222 #define CMDUTILS_COMMON_OPTIONS_AVDEVICE \
223  { "sources" , OPT_EXIT | HAS_ARG, { .func_arg = show_sources }, \
224  "list sources of the input device", "device" }, \
225  { "sinks" , OPT_EXIT | HAS_ARG, { .func_arg = show_sinks }, \
226  "list sinks of the output device", "device" }, \
227 
228 #else
229 #define CMDUTILS_COMMON_OPTIONS_AVDEVICE
230 #endif
231 
232 #define CMDUTILS_COMMON_OPTIONS \
233  { "L", OPT_EXIT, { .func_arg = show_license }, "show license" }, \
234  { "h", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
235  { "?", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
236  { "help", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
237  { "-help", OPT_EXIT, { .func_arg = show_help }, "show help", "topic" }, \
238  { "version", OPT_EXIT, { .func_arg = show_version }, "show version" }, \
239  { "buildconf", OPT_EXIT, { .func_arg = show_buildconf }, "show build configuration" }, \
240  { "formats", OPT_EXIT, { .func_arg = show_formats }, "show available formats" }, \
241  { "muxers", OPT_EXIT, { .func_arg = show_muxers }, "show available muxers" }, \
242  { "demuxers", OPT_EXIT, { .func_arg = show_demuxers }, "show available demuxers" }, \
243  { "devices", OPT_EXIT, { .func_arg = show_devices }, "show available devices" }, \
244  { "codecs", OPT_EXIT, { .func_arg = show_codecs }, "show available codecs" }, \
245  { "decoders", OPT_EXIT, { .func_arg = show_decoders }, "show available decoders" }, \
246  { "encoders", OPT_EXIT, { .func_arg = show_encoders }, "show available encoders" }, \
247  { "bsfs", OPT_EXIT, { .func_arg = show_bsfs }, "show available bit stream filters" }, \
248  { "protocols", OPT_EXIT, { .func_arg = show_protocols }, "show available protocols" }, \
249  { "filters", OPT_EXIT, { .func_arg = show_filters }, "show available filters" }, \
250  { "pix_fmts", OPT_EXIT, { .func_arg = show_pix_fmts }, "show available pixel formats" }, \
251  { "layouts", OPT_EXIT, { .func_arg = show_layouts }, "show standard channel layouts" }, \
252  { "sample_fmts", OPT_EXIT, { .func_arg = show_sample_fmts }, "show available audio sample formats" }, \
253  { "colors", OPT_EXIT, { .func_arg = show_colors }, "show available color names" }, \
254  { "loglevel", HAS_ARG, { .func_arg = opt_loglevel }, "set logging level", "loglevel" }, \
255  { "v", HAS_ARG, { .func_arg = opt_loglevel }, "set logging level", "loglevel" }, \
256  { "report", 0, { (void*)opt_report }, "generate a report" }, \
257  { "max_alloc", HAS_ARG, { .func_arg = opt_max_alloc }, "set maximum size of a single allocated block", "bytes" }, \
258  { "cpuflags", HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpuflags }, "force specific cpu flags", "flags" }, \
259  { "hide_banner", OPT_BOOL | OPT_EXPERT, {&hide_banner}, "do not show program banner", "hide_banner" }, \
260  CMDUTILS_COMMON_OPTIONS_OPENCL \
261  CMDUTILS_COMMON_OPTIONS_AVDEVICE \
262 
263 /**
264  * Show help for all options with given flags in class and all its
265  * children.
266  */
267 void show_help_children(const AVClass *class, int flags);
268 
269 /**
270  * Per-fftool specific help handler. Implemented in each
271  * fftool, called by show_help().
272  */
273 void show_help_default(const char *opt, const char *arg);
274 
275 /**
276  * Generic -h handler common to all fftools.
277  */
278 int show_help(void *optctx, const char *opt, const char *arg);
279 
280 /**
281  * Parse the command line arguments.
282  *
283  * @param optctx an opaque options context
284  * @param argc number of command line arguments
285  * @param argv values of command line arguments
286  * @param options Array with the definitions required to interpret every
287  * option of the form: -option_name [argument]
288  * @param parse_arg_function Name of the function called to process every
289  * argument without a leading option name flag. NULL if such arguments do
290  * not have to be processed.
291  */
292 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
293  void (* parse_arg_function)(void *optctx, const char*));
294 
295 /**
296  * Parse one given option.
297  *
298  * @return on success 1 if arg was consumed, 0 otherwise; negative number on error
299  */
300 int parse_option(void *optctx, const char *opt, const char *arg,
301  const OptionDef *options);
302 
303 /**
304  * An option extracted from the commandline.
305  * Cannot use AVDictionary because of options like -map which can be
306  * used multiple times.
307  */
308 typedef struct Option {
309  const OptionDef *opt;
310  const char *key;
311  const char *val;
312 } Option;
313 
314 typedef struct OptionGroupDef {
315  /**< group name */
316  const char *name;
317  /**
318  * Option to be used as group separator. Can be NULL for groups which
319  * are terminated by a non-option argument (e.g. ffmpeg output files)
320  */
321  const char *sep;
322  /**
323  * Option flags that must be set on each option that is
324  * applied to this group
325  */
326  int flags;
328 
329 typedef struct OptionGroup {
331  const char *arg;
332 
334  int nb_opts;
335 
341 } OptionGroup;
342 
343 /**
344  * A list of option groups that all have the same group type
345  * (e.g. input files or output files)
346  */
347 typedef struct OptionGroupList {
349 
353 
354 typedef struct OptionParseContext {
356 
359 
360  /* parsing state */
363 
364 /**
365  * Parse an options group and write results into optctx.
366  *
367  * @param optctx an app-specific options context. NULL for global options group
368  */
369 int parse_optgroup(void *optctx, OptionGroup *g);
370 
371 /**
372  * Split the commandline into an intermediate form convenient for further
373  * processing.
374  *
375  * The commandline is assumed to be composed of options which either belong to a
376  * group (those with OPT_SPEC, OPT_OFFSET or OPT_PERFILE) or are global
377  * (everything else).
378  *
379  * A group (defined by an OptionGroupDef struct) is a sequence of options
380  * terminated by either a group separator option (e.g. -i) or a parameter that
381  * is not an option (doesn't start with -). A group without a separator option
382  * must always be first in the supplied groups list.
383  *
384  * All options within the same group are stored in one OptionGroup struct in an
385  * OptionGroupList, all groups with the same group definition are stored in one
386  * OptionGroupList in OptionParseContext.groups. The order of group lists is the
387  * same as the order of group definitions.
388  */
389 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
390  const OptionDef *options,
391  const OptionGroupDef *groups, int nb_groups);
392 
393 /**
394  * Free all allocated memory in an OptionParseContext.
395  */
397 
398 /**
399  * Find the '-loglevel' option in the command line args and apply it.
400  */
401 void parse_loglevel(int argc, char **argv, const OptionDef *options);
402 
403 /**
404  * Return index of option opt in argv or 0 if not found.
405  */
406 int locate_option(int argc, char **argv, const OptionDef *options,
407  const char *optname);
408 
409 /**
410  * Check if the given stream matches a stream specifier.
411  *
412  * @param s Corresponding format context.
413  * @param st Stream from s to be checked.
414  * @param spec A stream specifier of the [v|a|s|d]:[<stream index>] form.
415  *
416  * @return 1 if the stream matches, 0 if it doesn't, <0 on error
417  */
418 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec);
419 
420 /**
421  * Filter out options for given codec.
422  *
423  * Create a new options dictionary containing only the options from
424  * opts which apply to the codec with ID codec_id.
425  *
426  * @param opts dictionary to place options in
427  * @param codec_id ID of the codec that should be filtered for
428  * @param s Corresponding format context.
429  * @param st A stream from s for which the options should be filtered.
430  * @param codec The particular codec for which the options should be filtered.
431  * If null, the default one is looked up according to the codec id.
432  * @return a pointer to the created dictionary
433  */
435  AVFormatContext *s, AVStream *st, AVCodec *codec);
436 
437 /**
438  * Setup AVCodecContext options for avformat_find_stream_info().
439  *
440  * Create an array of dictionaries, one dictionary for each stream
441  * contained in s.
442  * Each dictionary will contain the options from codec_opts which can
443  * be applied to the corresponding stream codec context.
444  *
445  * @return pointer to the created array of dictionaries, NULL if it
446  * cannot be created
447  */
449  AVDictionary *codec_opts);
450 
451 /**
452  * Print an error message to stderr, indicating filename and a human
453  * readable description of the error code err.
454  *
455  * If strerror_r() is not available the use of this function in a
456  * multithreaded application may be unsafe.
457  *
458  * @see av_strerror()
459  */
460 void print_error(const char *filename, int err);
461 
462 /**
463  * Print the program banner to stderr. The banner contents depend on the
464  * current version of the repository and of the libav* libraries used by
465  * the program.
466  */
467 void show_banner(int argc, char **argv, const OptionDef *options);
468 
469 /**
470  * Print the version of the program to stdout. The version message
471  * depends on the current versions of the repository and of the libav*
472  * libraries.
473  * This option processing function does not utilize the arguments.
474  */
475 int show_version(void *optctx, const char *opt, const char *arg);
476 
477 /**
478  * Print the build configuration of the program to stdout. The contents
479  * depend on the definition of FFMPEG_CONFIGURATION.
480  * This option processing function does not utilize the arguments.
481  */
482 int show_buildconf(void *optctx, const char *opt, const char *arg);
483 
484 /**
485  * Print the license of the program to stdout. The license depends on
486  * the license of the libraries compiled into the program.
487  * This option processing function does not utilize the arguments.
488  */
489 int show_license(void *optctx, const char *opt, const char *arg);
490 
491 /**
492  * Print a listing containing all the formats supported by the
493  * program (including devices).
494  * This option processing function does not utilize the arguments.
495  */
496 int show_formats(void *optctx, const char *opt, const char *arg);
497 
498 /**
499  * Print a listing containing all the muxers supported by the
500  * program (including devices).
501  * This option processing function does not utilize the arguments.
502  */
503 int show_muxers(void *optctx, const char *opt, const char *arg);
504 
505 /**
506  * Print a listing containing all the demuxer supported by the
507  * program (including devices).
508  * This option processing function does not utilize the arguments.
509  */
510 int show_demuxers(void *optctx, const char *opt, const char *arg);
511 
512 /**
513  * Print a listing containing all the devices supported by the
514  * program.
515  * This option processing function does not utilize the arguments.
516  */
517 int show_devices(void *optctx, const char *opt, const char *arg);
518 
519 #if CONFIG_AVDEVICE
520 /**
521  * Print a listing containing autodetected sinks of the output device.
522  * Device name with options may be passed as an argument to limit results.
523  */
524 int show_sinks(void *optctx, const char *opt, const char *arg);
525 
526 /**
527  * Print a listing containing autodetected sources of the input device.
528  * Device name with options may be passed as an argument to limit results.
529  */
530 int show_sources(void *optctx, const char *opt, const char *arg);
531 #endif
532 
533 /**
534  * Print a listing containing all the codecs supported by the
535  * program.
536  * This option processing function does not utilize the arguments.
537  */
538 int show_codecs(void *optctx, const char *opt, const char *arg);
539 
540 /**
541  * Print a listing containing all the decoders supported by the
542  * program.
543  */
544 int show_decoders(void *optctx, const char *opt, const char *arg);
545 
546 /**
547  * Print a listing containing all the encoders supported by the
548  * program.
549  */
550 int show_encoders(void *optctx, const char *opt, const char *arg);
551 
552 /**
553  * Print a listing containing all the filters supported by the
554  * program.
555  * This option processing function does not utilize the arguments.
556  */
557 int show_filters(void *optctx, const char *opt, const char *arg);
558 
559 /**
560  * Print a listing containing all the bit stream filters supported by the
561  * program.
562  * This option processing function does not utilize the arguments.
563  */
564 int show_bsfs(void *optctx, const char *opt, const char *arg);
565 
566 /**
567  * Print a listing containing all the protocols supported by the
568  * program.
569  * This option processing function does not utilize the arguments.
570  */
571 int show_protocols(void *optctx, const char *opt, const char *arg);
572 
573 /**
574  * Print a listing containing all the pixel formats supported by the
575  * program.
576  * This option processing function does not utilize the arguments.
577  */
578 int show_pix_fmts(void *optctx, const char *opt, const char *arg);
579 
580 /**
581  * Print a listing containing all the standard channel layouts supported by
582  * the program.
583  * This option processing function does not utilize the arguments.
584  */
585 int show_layouts(void *optctx, const char *opt, const char *arg);
586 
587 /**
588  * Print a listing containing all the sample formats supported by the
589  * program.
590  */
591 int show_sample_fmts(void *optctx, const char *opt, const char *arg);
592 
593 /**
594  * Print a listing containing all the color names and values recognized
595  * by the program.
596  */
597 int show_colors(void *optctx, const char *opt, const char *arg);
598 
599 /**
600  * Return a positive value if a line read from standard input
601  * starts with [yY], otherwise return 0.
602  */
603 int read_yesno(void);
604 
605 /**
606  * Get a file corresponding to a preset file.
607  *
608  * If is_path is non-zero, look for the file in the path preset_name.
609  * Otherwise search for a file named arg.ffpreset in the directories
610  * $FFMPEG_DATADIR (if set), $HOME/.ffmpeg, and in the datadir defined
611  * at configuration time or in a "ffpresets" folder along the executable
612  * on win32, in that order. If no such file is found and
613  * codec_name is defined, then search for a file named
614  * codec_name-preset_name.avpreset in the above-mentioned directories.
615  *
616  * @param filename buffer where the name of the found filename is written
617  * @param filename_size size in bytes of the filename buffer
618  * @param preset_name name of the preset to search
619  * @param is_path tell if preset_name is a filename path
620  * @param codec_name name of the codec for which to look for the
621  * preset, may be NULL
622  */
623 FILE *get_preset_file(char *filename, size_t filename_size,
624  const char *preset_name, int is_path, const char *codec_name);
625 
626 /**
627  * Realloc array to hold new_size elements of elem_size.
628  * Calls exit() on failure.
629  *
630  * @param array array to reallocate
631  * @param elem_size size in bytes of each element
632  * @param size new element count will be written here
633  * @param new_size number of elements to place in reallocated array
634  * @return reallocated array
635  */
636 void *grow_array(void *array, int elem_size, int *size, int new_size);
637 
638 #define media_type_string av_get_media_type_string
639 
640 #define GROW_ARRAY(array, nb_elems)\
641  array = grow_array(array, sizeof(*array), &nb_elems, nb_elems + 1)
642 
643 #define GET_PIX_FMT_NAME(pix_fmt)\
644  const char *name = av_get_pix_fmt_name(pix_fmt);
645 
646 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
647  const char *name = av_get_sample_fmt_name(sample_fmt)
648 
649 #define GET_SAMPLE_RATE_NAME(rate)\
650  char name[16];\
651  snprintf(name, sizeof(name), "%d", rate);
652 
653 #define GET_CH_LAYOUT_NAME(ch_layout)\
654  char name[16];\
655  snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
656 
657 #define GET_CH_LAYOUT_DESC(ch_layout)\
658  char name[128];\
659  av_get_channel_layout_string(name, sizeof(name), 0, ch_layout);
660 
661 double get_rotation(AVStream *st);
662 
663 #endif /* FFTOOLS_CMDUTILS_H */
int locate_option(int argc, char **argv, const OptionDef *options, const char *optname)
Return index of option opt in argv or 0 if not found.
Definition: cmdutils.c:447
int show_bsfs(void *optctx, const char *opt, const char *arg)
Print a listing containing all the bit stream filters supported by the program.
Definition: cmdutils.c:1600
int opt_codec_debug(void *optctx, const char *opt, const char *arg)
AVDictionary * resample_opts
Definition: cmdutils.h:338
const char * s
Definition: avisynth_c.h:768
AVDictionary * swr_opts
Definition: cmdutils.h:340
int show_pix_fmts(void *optctx, const char *opt, const char *arg)
Print a listing containing all the pixel formats supported by the program.
Definition: cmdutils.c:1687
uint64_t ui64
Definition: cmdutils.h:158
const char * name
< group name
Definition: cmdutils.h:316
int parse_optgroup(void *optctx, OptionGroup *g)
Parse an options group and write results into optctx.
Definition: cmdutils.c:414
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the given stream matches a stream specifier.
Definition: cmdutils.c:1995
void uninit_parse_context(OptionParseContext *octx)
Free all allocated memory in an OptionParseContext.
Definition: cmdutils.c:727
const char * fmt
Definition: avisynth_c.h:769
int(* func_arg)(void *, const char *, const char *)
Definition: cmdutils.h:191
Main libavfilter public API header.
const char * g
Definition: vf_curves.c:112
double dbl
Definition: cmdutils.h:160
const char * arg
Definition: cmdutils.h:331
AVCodecContext * avcodec_opts[AVMEDIA_TYPE_NB]
const char * sep
Option to be used as group separator.
Definition: cmdutils.h:321
int hide_banner
Definition: cmdutils.c:77
AVCodec.
Definition: avcodec.h:3289
int show_decoders(void *optctx, const char *opt, const char *arg)
Print a listing containing all the decoders supported by the program.
Definition: cmdutils.c:1588
void register_exit(void(*cb)(int ret))
Register a program-specific cleanup routine.
Definition: cmdutils.c:131
Format I/O context.
Definition: avformat.h:1325
int opt_max_alloc(void *optctx, const char *opt, const char *arg)
Definition: cmdutils.c:1025
AVDictionary * format_opts
Definition: cmdutils.c:73
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:106
uint8_t
double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max)
Parse a string and return its corresponding value as a double.
Definition: cmdutils.c:144
static const OptionGroupDef groups[]
Definition: ffmpeg_opt.c:3271
int opt_timelimit(void *optctx, const char *opt, const char *arg)
Limit the execution time.
Definition: cmdutils.c:1039
int show_protocols(void *optctx, const char *opt, const char *arg)
Print a listing containing all the protocols supported by the program.
Definition: cmdutils.c:1612
int nb_opts
Definition: cmdutils.h:334
void parse_loglevel(int argc, char **argv, const OptionDef *options)
Find the '-loglevel' option in the command line args and apply it.
Definition: cmdutils.c:506
static int flags
Definition: log.c:57
external API header
ptrdiff_t size
Definition: opengl_enc.c:101
const OptionDef options[]
Definition: ffserver.c:3948
void uninit_opts(void)
Uninitialize the cmdutils option system, in particular free the *_opts contexts and their contents...
Definition: cmdutils.c:90
int flags
Option flags that must be set on each option that is applied to this group.
Definition: cmdutils.h:326
int show_license(void *optctx, const char *opt, const char *arg)
Print the license of the program to stdout.
Definition: cmdutils.c:1179
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:214
AVDictionary * swr_opts
Definition: cmdutils.c:72
int show_layouts(void *optctx, const char *opt, const char *arg)
Print a listing containing all the standard channel layouts supported by the program.
Definition: cmdutils.c:1720
int show_buildconf(void *optctx, const char *opt, const char *arg)
Print the build configuration of the program to stdout.
Definition: cmdutils.c:1171
void init_opts(void)
Initialize the cmdutils option system, in particular allocate the *_opts contexts.
Definition: cmdutils.c:85
const char * arg
Definition: jacosubdec.c:66
const char * name
Definition: cmdutils.h:165
int flags
Definition: cmdutils.h:166
const char * val
Definition: cmdutils.h:311
int show_demuxers(void *optctx, const char *opt, const char *arg)
Print a listing containing all the demuxer supported by the program (including devices).
Definition: cmdutils.c:1329
int show_colors(void *optctx, const char *opt, const char *arg)
Print a listing containing all the color names and values recognized by the program.
Definition: cmdutils.c:1673
const int program_birth_year
program birth year, defined by the program for show_banner()
Definition: ffmpeg.c:113
AVDictionary ** setup_find_stream_info_opts(AVFormatContext *s, AVDictionary *codec_opts)
Setup AVCodecContext options for avformat_find_stream_info().
Definition: cmdutils.c:2060
AVDictionary * opts
Definition: movenc.c:50
OptionGroup * groups
Definition: cmdutils.h:350
size_t off
Definition: cmdutils.h:192
AVDictionary * sws_dict
Definition: cmdutils.c:71
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:348
A list of option groups that all have the same group type (e.g.
Definition: cmdutils.h:347
void show_help_default(const char *opt, const char *arg)
Per-fftool specific help handler.
Definition: ffmpeg_opt.c:3190
FILE * get_preset_file(char *filename, size_t filename_size, const char *preset_name, int is_path, const char *codec_name)
Get a file corresponding to a preset file.
Definition: cmdutils.c:1945
int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options)
Parse one given option.
Definition: cmdutils.c:350
int opt_default(void *optctx, const char *opt, const char *arg)
Fallback for options that are not explicitly handled, these will be parsed through AVOptions...
Definition: cmdutils.c:545
char * specifier
stream/chapter/program/...
Definition: cmdutils.h:153
enum AVCodecID codec_id
Definition: vaapi_decode.c:236
void * dst_ptr
Definition: cmdutils.h:190
union SpecifierOpt::@36 u
int opt_loglevel(void *optctx, const char *opt, const char *arg)
Set the libav* libraries log level.
Definition: cmdutils.c:871
uint8_t * str
Definition: cmdutils.h:155
int opt_report(const char *opt)
Definition: cmdutils.c:1020
Stream structure.
Definition: avformat.h:872
int show_version(void *optctx, const char *opt, const char *arg)
Print the version of the program to stdout.
Definition: cmdutils.c:1162
void show_banner(int argc, char **argv, const OptionDef *options)
Print the program banner to stderr.
Definition: cmdutils.c:1151
Libavcodec external API header.
const char * help
Definition: cmdutils.h:194
int show_formats(void *optctx, const char *opt, const char *arg)
Print a listing containing all the formats supported by the program (including devices).
Definition: cmdutils.c:1319
main external API structure.
Definition: avcodec.h:1481
int show_devices(void *optctx, const char *opt, const char *arg)
Print a listing containing all the devices supported by the program.
Definition: cmdutils.c:1334
int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration)
Parse a string specifying a time and return its corresponding value as a number of microseconds...
Definition: cmdutils.c:165
AVDictionary * codec_opts
Definition: cmdutils.c:73
GLint GLenum type
Definition: opengl_enc.c:105
AVDictionary * filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id, AVFormatContext *s, AVStream *st, AVCodec *codec)
Filter out options for given codec.
Definition: cmdutils.c:2003
const OptionGroupDef * group_def
Definition: cmdutils.h:330
Describe the class of an AVClass context structure.
Definition: log.h:67
const char * argname
Definition: cmdutils.h:195
int show_codecs(void *optctx, const char *opt, const char *arg)
Print a listing containing all the codecs supported by the program.
Definition: cmdutils.c:1495
int split_commandline(OptionParseContext *octx, int argc, char *argv[], const OptionDef *options, const OptionGroupDef *groups, int nb_groups)
Split the commandline into an intermediate form convenient for further processing.
Definition: cmdutils.c:753
uint8_t level
Definition: svq3.c:207
void parse_options(void *optctx, int argc, char **argv, const OptionDef *options, void(*parse_arg_function)(void *optctx, const char *))
Parse the command line arguments.
void exit_program(int ret) av_noreturn
Wraps exit with a program-specific cleanup routine.
Definition: cmdutils.c:136
int show_muxers(void *optctx, const char *opt, const char *arg)
Print a listing containing all the muxers supported by the program (including devices).
Definition: cmdutils.c:1324
An option extracted from the commandline.
Definition: cmdutils.h:308
Main libavformat public API header.
int
AVDictionary * format_opts
Definition: cmdutils.h:337
#define av_noreturn
Definition: attributes.h:162
OptionGroupList * groups
Definition: cmdutils.h:357
void show_help_options(const OptionDef *options, const char *msg, int req_flags, int rej_flags, int alt_flags)
Print help for all options matching specified flags.
Definition: cmdutils.c:177
OptionGroup global_opts
Definition: cmdutils.h:355
AVFormatContext * avformat_opts
void * grow_array(void *array, int elem_size, int *size, int new_size)
Realloc array to hold new_size elements of elem_size.
Definition: cmdutils.c:2080
const char * key
Definition: cmdutils.h:310
int show_encoders(void *optctx, const char *opt, const char *arg)
Print a listing containing all the encoders supported by the program.
Definition: cmdutils.c:1594
void show_help_children(const AVClass *class, int flags)
Show help for all options with given flags in class and all its children.
Definition: cmdutils.c:206
int show_help(void *optctx, const char *opt, const char *arg)
Generic -h handler common to all fftools.
Definition: cmdutils.c:1900
const OptionDef * opt
Definition: cmdutils.h:309
AVDictionary * resample_opts
Definition: cmdutils.c:73
int show_sample_fmts(void *optctx, const char *opt, const char *arg)
Print a listing containing all the sample formats supported by the program.
Definition: cmdutils.c:1749
OptionGroup cur_group
Definition: cmdutils.h:361
AVDictionary * codec_opts
Definition: cmdutils.h:336
Option * opts
Definition: cmdutils.h:333
void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
Trivial log callback.
Definition: cmdutils.c:99
double get_rotation(AVStream *st)
Definition: cmdutils.c:2099
static int array[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:106
void print_error(const char *filename, int err)
Print an error message to stderr, indicating filename and a human readable description of the error c...
Definition: cmdutils.c:1052
union OptionDef::@37 u
AVDictionary * sws_dict
Definition: cmdutils.h:339
int show_filters(void *optctx, const char *opt, const char *arg)
Print a listing containing all the filters supported by the program.
Definition: cmdutils.c:1627
void init_dynload(void)
Initialize dynamic library loading.
Definition: cmdutils.c:120
int opt_cpuflags(void *optctx, const char *opt, const char *arg)
Override the cpuflags.
Definition: cmdutils.c:859
float min
int read_yesno(void)
Return a positive value if a line read from standard input starts with [yY], otherwise return 0...
Definition: cmdutils.c:1934
const char program_name[]
program name, defined by the program for show_version().
Definition: ffmpeg.c:112
int opt_opencl_bench(void *optctx, const char *opt, const char *arg)