cmdutils.c File Reference

#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <math.h>
#include "config.h"
#include "libavformat/avformat.h"
#include "libavfilter/avfilter.h"
#include "libavdevice/avdevice.h"
#include "libswscale/swscale.h"
#include "libpostproc/postprocess.h"
#include "libavutil/avstring.h"
#include "libavcodec/opt.h"
#include "cmdutils.h"
#include "version.h"

Go to the source code of this file.

Defines

#define PRINT_LIB_VERSION(outstream, libname, LIBNAME, indent)

Functions

double parse_number_or_die (const char *context, const char *numstr, int type, double min, double max)

Parses a string and returns its corresponding value as a double.

int64_t parse_time_or_die (const char *context, const char *timestr, int is_duration)

Parses a string specifying a time and returns its corresponding value as a number of microseconds.

void show_help_options (const OptionDef *options, const char *msg, int mask, int value)

static const OptionDef * find_option (const OptionDef *po, const char *name)

void parse_options (int argc, char **argv, const OptionDef *options, void(*parse_arg_function)(const char *))

Parses the command line arguments.

int opt_default (const char *opt, const char *arg)

Fallback for options that are not explicitly handled, these will be parsed through AVOptions.

void set_context_opts (void *ctx, void *opts_ctx, int flags)

void print_error (const char *filename, int err)

static void print_all_lib_versions (FILE *outstream, int indent)

void show_banner (void)

Prints the program banner to stderr.

void show_version (void)

Prints the version of the program to stdout.

void show_license (void)

Prints the license of the program to stdout.

void show_formats (void)

Prints a listing containing all the formats supported by the program.

Variables

const char ** opt_names

static int opt_name_count

AVCodecContext * avctx_opts [CODEC_TYPE_NB]

AVFormatContext * avformat_opts

struct SwsContext * sws_opts

const int this_year = 2012

Define Documentation

#define PRINT_LIB_VERSION ( outstream,

libname,

LIBNAME,

indent )

Value:

version= libname##_version(); \
 fprintf(outstream, "%slib%-10s %2d.%2d.%2d / %2d.%2d.%2d\n", indent? " " : "", #libname, \
 LIB##LIBNAME##_VERSION_MAJOR, LIB##LIBNAME##_VERSION_MINOR, LIB##LIBNAME##_VERSION_MICRO, \
 version >> 16, version >> 8 & 0xff, version & 0xff);

Definition at line 267 of file cmdutils.c.

Referenced by print_all_lib_versions().

Function Documentation

static const OptionDef* find_option ( const OptionDef * po,

const char * name

) [static]

Definition at line 106 of file cmdutils.c.

Referenced by parse_options().

int opt_default ( const char * opt,

const char * arg

)

Fallback for options that are not explicitly handled, these will be parsed through AVOptions.

Definition at line 175 of file cmdutils.c.

Referenced by opt_bitrate(), opt_preset(), and opt_target().

double parse_number_or_die ( const char * context,

const char * numstr,

int type,

double min,

double max

)

Parses a string and returns its corresponding value as a double.

Exits from the application if the string cannot be correctly parsed or the corresponding value is invalid.

Parameters:: context the context of the value to be set (e.g. the corresponding commandline option name)

numstr the string to be parsed

type the type (OPT_INT64 or OPT_FLOAT) as which the string should be parsed

min the minimum valid accepted value

max the maximum valid accepted value

Definition at line 55 of file cmdutils.c.

Referenced by opt_audio_channels(), opt_audio_rate(), opt_debug(), opt_height(), opt_me_threshold(), opt_thread_count(), opt_verbose(), opt_vismv(), opt_width(), and parse_options().

void parse_options ( int argc,

char ** argv,

const OptionDef * options,

void(*)(const char *) parse_arg_function

)

Parses the command line arguments.

Parameters:: options Array with the definitions required to interpret every option of the form: -<option_name> [<argument>]

parse_arg_function Name of the function called to process every argument without a leading option name flag. NULL if such arguments do not have to be processed.

Definition at line 115 of file cmdutils.c.

Referenced by main().

int64_t parse_time_or_die ( const char * context,

const char * timestr,

int is_duration

)

Parses a string specifying a time and returns its corresponding value as a number of microseconds.

Exits from the application if the string cannot be correctly parsed.

Parameters:: context the context of the value to be set (e.g. the corresponding commandline option name)

timestr the string to be parsed

is_duration a flag which tells how to interpret timestr, if not zero timestr is interpreted as a duration, otherwise as a date