FFmpeg
Data Structures | Macros | Functions | Variables
cmdutils.h File Reference
#include <stdint.h>
#include "config.h"
#include "libavcodec/avcodec.h"
#include "libavfilter/avfilter.h"
#include "libavformat/avformat.h"
#include "libswscale/swscale.h"

Go to the source code of this file.

Data Structures

struct   SpecifierOpt
 
struct   OptionDef
 
struct   Option
  An option extracted from the commandline. More...
 
struct   OptionGroupDef
 
struct   OptionGroup
 
struct   OptionGroupList
  A list of option groups that all have the same group type (e.g. More...
 
struct   OptionParseContext
 

Macros

#define  HAS_ARG   0x0001
 
#define  OPT_BOOL   0x0002
 
#define  OPT_EXPERT   0x0004
 
#define  OPT_STRING   0x0008
 
#define  OPT_VIDEO   0x0010
 
#define  OPT_AUDIO   0x0020
 
#define  OPT_INT   0x0080
 
#define  OPT_FLOAT   0x0100
 
#define  OPT_SUBTITLE   0x0200
 
#define  OPT_INT64   0x0400
 
#define  OPT_EXIT   0x0800
 
#define  OPT_DATA   0x1000
 
#define  OPT_PERFILE
 
#define  OPT_OFFSET   0x4000 /* option is specified as an offset in a passed optctx */
 
#define  OPT_SPEC
 
#define  OPT_TIME   0x10000
 
#define  OPT_DOUBLE   0x20000
 
#define  OPT_INPUT   0x40000
 
#define  OPT_OUTPUT   0x80000
 
#define  media_type_string   av_get_media_type_string
 
#define  GROW_ARRAY(array, nb_elems)   array = grow_array(array, sizeof(*array), &nb_elems, nb_elems + 1)
 
#define  GET_PIX_FMT_NAME(pix_fmt)   const char *name = av_get_pix_fmt_name(pix_fmt);
 
#define  GET_SAMPLE_FMT_NAME(sample_fmt)   const char *name = av_get_sample_fmt_name(sample_fmt)
 
#define  GET_SAMPLE_RATE_NAME(rate)
 
#define  GET_CH_LAYOUT_NAME(ch_layout)
 
#define  GET_CH_LAYOUT_DESC(ch_layout)
 

Functions

void  register_exit (void(*cb)(int ret))
  Register a program-specific cleanup routine.
 
void  exit_program (int ret) av_noreturn
  Wraps exit with a program-specific cleanup routine.
 
void  init_opts (void)
  Initialize the cmdutils option system, in particular allocate the *_opts contexts.
 
void  uninit_opts (void)
  Uninitialize the cmdutils option system, in particular free the *_opts contexts and their contents.
 
void  log_callback_help (void *ptr, int level, const char *fmt, va_list vl)
  Trivial log callback.
 
int  opt_cpuflags (void *optctx, const char *opt, const char *arg)
  Override the cpuflags.
 
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.
 
int  opt_loglevel (void *optctx, const char *opt, const char *arg)
  Set the libav* libraries log level.
 
int  opt_report (const char *opt)
 
int  opt_max_alloc (void *optctx, const char *opt, const char *arg)
 
int  opt_codec_debug (void *optctx, const char *opt, const char *arg)
 
int  opt_timelimit (void *optctx, const char *opt, const char *arg)
  Limit the execution time.
 
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.
 
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.
 
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.
 
void  show_help_children (const AVClass *class, int flags)
  Show help for all options with given flags in class and all its children.
 
void  show_help_default (const char *opt, const char *arg)
  Per-fftool specific help handler.
 
int  show_help (void *optctx, const char *opt, const char *arg)
  Generic -h handler common to all fftools.
 
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.
 
int  parse_option (void *optctx, const char *opt, const char *arg, const OptionDef *options)
  Parse one given option.
 
int  parse_optgroup (void *optctx, OptionGroup *g)
  Parse an options group and write results into optctx.
 
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.
 
void  uninit_parse_context (OptionParseContext *octx)
  Free all allocated memory in an OptionParseContext.
 
void  parse_loglevel (int argc, char **argv, const OptionDef *options)
  Find the '-loglevel' option in the command line args and apply it.
 
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.
 
int  check_stream_specifier (AVFormatContext *s, AVStream *st, const char *spec)
  Check if the given stream matches a stream specifier.
 
AVDictionary *  filter_codec_opts (AVDictionary *opts, enum AVCodecID codec_id, AVFormatContext *s, AVStream *st, AVCodec *codec)
  Filter out options for given codec.
 
AVDictionary **  setup_find_stream_info_opts (AVFormatContext *s, AVDictionary *codec_opts)
  Setup AVCodecContext options for avformat_find_stream_info().
 
void  print_error (const char *filename, int err)
  Print an error message to stderr, indicating filename and a human readable description of the error code err.
 
void  show_banner (int argc, char **argv, const OptionDef *options)
  Print the program banner to stderr.
 
int  show_version (void *optctx, const char *opt, const char *arg)
  Print the version of the program to stdout.
 
int  show_buildconf (void *optctx, const char *opt, const char *arg)
  Print the build configuration of the program to stdout.
 
int  show_license (void *optctx, const char *opt, const char *arg)
  Print the license of the program to stdout.
 
int  show_formats (void *optctx, const char *opt, const char *arg)
  Print a listing containing all the formats supported by the program (including devices).
 
int  show_devices (void *optctx, const char *opt, const char *arg)
  Print a listing containing all the devices supported by the program.
 
int  show_codecs (void *optctx, const char *opt, const char *arg)
  Print a listing containing all the codecs supported by the program.
 
int  show_decoders (void *optctx, const char *opt, const char *arg)
  Print a listing containing all the decoders supported by the program.
 
int  show_encoders (void *optctx, const char *opt, const char *arg)
  Print a listing containing all the encoders supported by the program.
 
int  show_filters (void *optctx, const char *opt, const char *arg)
  Print a listing containing all the filters supported by the program.
 
int  show_bsfs (void *optctx, const char *opt, const char *arg)
  Print a listing containing all the bit stream filters supported by the program.
 
int  show_protocols (void *optctx, const char *opt, const char *arg)
  Print a listing containing all the protocols supported by the program.
 
int  show_pix_fmts (void *optctx, const char *opt, const char *arg)
  Print a listing containing all the pixel formats supported by the program.
 
int  show_layouts (void *optctx, const char *opt, const char *arg)
  Print a listing containing all the standard channel layouts supported by the program.
 
int  show_sample_fmts (void *optctx, const char *opt, const char *arg)
  Print a listing containing all the sample formats supported by the program.
 
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.
 
int  read_yesno (void)
  Return a positive value if a line read from standard input starts with [yY], otherwise return 0.
 
int  cmdutils_read_file (const char *filename, char **bufptr, size_t *size)
  Read the file with name filename, and put its content in a newly allocated 0-terminated buffer.
 
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.
 
void *  grow_array (void *array, int elem_size, int *size, int new_size)
  Realloc array to hold new_size elements of elem_size.
 

Variables

const char  program_name []
  program name, defined by the program for show_version().
 
const int  program_birth_year
  program birth year, defined by the program for show_banner()
 
AVCodecContext *  avcodec_opts [AVMEDIA_TYPE_NB]
 
AVFormatContext *  avformat_opts
 
struct SwsContext *  sws_opts
 
AVDictionary *  swr_opts
 
AVDictionary *  format_opts
 
AVDictionary *  codec_opts
 
AVDictionary *  resample_opts
 
int  hide_banner
 

Macro Definition Documentation

#define HAS_ARG   0x0001

Definition at line 161 of file cmdutils.h.

Referenced by locate_option(), parse_option(), and split_commandline().

#define OPT_BOOL   0x0002

Definition at line 162 of file cmdutils.h.

Referenced by parse_option(), split_commandline(), and write_option().

#define OPT_EXPERT   0x0004

Definition at line 163 of file cmdutils.h.

Referenced by show_help_default().

#define OPT_STRING   0x0008

Definition at line 164 of file cmdutils.h.

Referenced by uninit_options(), and write_option().

#define OPT_VIDEO   0x0010

Definition at line 165 of file cmdutils.h.

Referenced by show_help_default().

#define OPT_AUDIO   0x0020

Definition at line 166 of file cmdutils.h.

Referenced by show_help_default().

#define OPT_INT   0x0080

Definition at line 167 of file cmdutils.h.

Referenced by opt_show_mode(), opt_streamid(), opt_vsync(), parse_number_or_die(), and write_option().

#define OPT_FLOAT   0x0100

Definition at line 168 of file cmdutils.h.

Referenced by write_option().

#define OPT_SUBTITLE   0x0200

Definition at line 169 of file cmdutils.h.

Referenced by show_help_default().

#define OPT_INT64   0x0400

Definition at line 170 of file cmdutils.h.

Referenced by opt_height(), opt_timelimit(), opt_width(), parse_number_or_die(), and write_option().

#define OPT_EXIT   0x0800

Definition at line 171 of file cmdutils.h.

Referenced by show_help_default(), split_commandline(), and write_option().

#define OPT_DATA   0x1000

Definition at line 172 of file cmdutils.h.

#define OPT_PERFILE
Value:
0x2000 /* the option is per-file (currently ffmpeg-only).
implied by OPT_OFFSET or OPT_SPEC */

Definition at line 173 of file cmdutils.h.

Referenced by add_opt(), and show_help_default().

#define OPT_OFFSET   0x4000 /* option is specified as an offset in a passed optctx */

Definition at line 174 of file cmdutils.h.

Referenced by add_opt(), show_help_default(), uninit_options(), and write_option().

#define OPT_SPEC
Value:
0x8000 /* option is to be stored in an array of SpecifierOpt.
Implies OPT_OFFSET. Next element after the offset is
an int containing element count in the array. */

Definition at line 175 of file cmdutils.h.

Referenced by add_opt(), show_help_default(), uninit_options(), and write_option().

#define OPT_TIME   0x10000

Definition at line 176 of file cmdutils.h.

Referenced by write_option().

#define OPT_DOUBLE   0x20000

Definition at line 177 of file cmdutils.h.

Referenced by write_option().

#define OPT_INPUT   0x40000

Definition at line 178 of file cmdutils.h.

#define OPT_OUTPUT   0x80000

Definition at line 179 of file cmdutils.h.

#define media_type_string   av_get_media_type_string

Definition at line 574 of file cmdutils.h.

Referenced by print_final_stats().

#define GROW_ARRAY (   array,
  nb_elems 
)    array = grow_array(array, sizeof(*array), &nb_elems, nb_elems + 1)

Definition at line 576 of file cmdutils.h.

Referenced by add_input_streams(), add_opt(), configure_filtergraph(), DEF_CHOOSE_FORMAT(), finish_group(), init_input_filter(), main(), new_output_stream(), open_input_file(), open_output_file(), opt_attach(), opt_filter_complex(), opt_filter_complex_script(), opt_map(), and opt_map_channel().

#define GET_PIX_FMT_NAME (   pix_fmt )    const char *name = av_get_pix_fmt_name(pix_fmt);

Definition at line 579 of file cmdutils.h.

Referenced by print_codec().

#define GET_SAMPLE_FMT_NAME (   sample_fmt )    const char *name = av_get_sample_fmt_name(sample_fmt)

Definition at line 582 of file cmdutils.h.

Referenced by print_codec().

#define GET_SAMPLE_RATE_NAME (   rate )
Value:
char name[16];\
snprintf(name, sizeof(name), "%d", rate);

Definition at line 585 of file cmdutils.h.

Referenced by print_codec().

#define GET_CH_LAYOUT_NAME (   ch_layout )
Value:
char name[16];\
snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);

Definition at line 589 of file cmdutils.h.

#define GET_CH_LAYOUT_DESC (   ch_layout )
Value:
char name[128];\
av_get_channel_layout_string(name, sizeof(name), 0, ch_layout);

Definition at line 593 of file cmdutils.h.

Referenced by print_codec().

Function Documentation

void register_exit ( void(*)(int ret)  cb )

Register a program-specific cleanup routine.

Definition at line 116 of file cmdutils.c.

Referenced by main().

void exit_program ( int  ret )

Wraps exit with a program-specific cleanup routine.

Definition at line 121 of file cmdutils.c.

Referenced by abort_codec_experimental(), add_input_streams(), assert_avoptions(), assert_file_overwrite(), check_streamcopy_filters(), choose_pix_fmts(), configure_filtergraph(), copy_metadata(), decode_audio(), decode_video(), DEF_CHOOSE_FORMAT(), do_audio_out(), do_subtitle_out(), do_video_out(), do_video_stats(), dump_attachment(), filter_codec_opts(), find_codec_or_die(), flush_encoders(), get_codecs_sorted(), get_format(), get_line(), get_ost_filters(), grow_array(), init_input_filter(), init_output_filter(), init_parse_context(), init_report(), main(), new_audio_stream(), new_data_stream(), new_output_stream(), new_subtitle_stream(), new_video_stream(), open_input_file(), open_output_file(), opt_input_file(), opt_loglevel(), opt_map(), opt_map_channel(), opt_max_alloc(), opt_preset(), opt_streamid(), opt_target(), parse_forced_key_frames(), parse_matrix_coeffs(), parse_meta_type(), parse_number_or_die(), parse_options(), parse_time_or_die(), print_sdp(), process_input(), set_encoder_id(), transcode_init(), write_frame(), and write_option().

void init_opts ( void  )

Initialize the cmdutils option system, in particular allocate the *_opts contexts.

Definition at line 72 of file cmdutils.c.

Referenced by finish_group(), init_parse_context(), and main().

void uninit_opts ( void  )

Uninitialize the cmdutils option system, in particular free the *_opts contexts and their contents.

Definition at line 80 of file cmdutils.c.

Referenced by do_exit(), ffmpeg_cleanup(), main(), and uninit_parse_context().

void log_callback_help ( void *  ptr,
int  level,
const char *  fmt,
va_list  vl 
)

Trivial log callback.

Only suitable for opt_help and similar since it lacks prefix handling.

Definition at line 93 of file cmdutils.c.

Referenced by show_buildconf(), show_help(), show_help_default(), and show_version().

int opt_cpuflags ( void *  optctx,
const char *  opt,
const char *  arg 
)

Override the cpuflags.

Definition at line 825 of file cmdutils.c.

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 at line 519 of file cmdutils.c.

Referenced by opt_default_new(), opt_frame_pix_fmt(), opt_frame_size(), opt_target(), opt_video_channel(), opt_video_standard(), and split_commandline().

int opt_loglevel ( void *  optctx,
const char *  opt,
const char *  arg 
)

Set the libav* libraries log level.

Definition at line 837 of file cmdutils.c.

Referenced by parse_loglevel().

int opt_report ( const char *  opt )

Definition at line 985 of file cmdutils.c.

int opt_max_alloc ( void *  optctx,
const char *  opt,
const char *  arg 
)

Definition at line 990 of file cmdutils.c.

int opt_codec_debug ( void *  optctx,
const char *  opt,
const char *  arg 
)
int opt_timelimit ( void *  optctx,
const char *  opt,
const char *  arg 
)

Limit the execution time.

Definition at line 1004 of file cmdutils.c.

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.

Exit 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 command line 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 129 of file cmdutils.c.

Referenced by opt_height(), opt_show_mode(), opt_streamid(), opt_timelimit(), opt_vsync(), opt_width(), and write_option().

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.

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

Parameters
context the context of the value to be set (e.g. the corresponding command line 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
See Also
av_parse_time()

Definition at line 150 of file cmdutils.c.

Referenced by opt_duration(), opt_recording_timestamp(), opt_seek(), parse_forced_key_frames(), and write_option().

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.

Parameters
options a list of options
msg title of this group. Only printed if at least one option matches.
req_flags print only options which have all those flags set.
rej_flags don't print options which have any of those flags set.
alt_flags print only options that have at least one of those flags set

Definition at line 162 of file cmdutils.c.

Referenced by show_help_default().

void show_help_children ( const AVClass *  class,
int  flags 
)

Show help for all options with given flags in class and all its children.

Definition at line 191 of file cmdutils.c.

Referenced by print_codec(), show_help_children(), show_help_default(), show_help_demuxer(), and show_help_muxer().

void show_help_default ( const char *  opt,
const char *  arg 
)

Per-fftool specific help handler.

Implemented in each fftool, called by show_help().

Definition at line 2628 of file ffmpeg_opt.c.

Referenced by show_help().

int show_help ( void *  optctx,
const char *  opt,
const char *  arg 
)

Generic -h handler common to all fftools.

Definition at line 1818 of file cmdutils.c.

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

Parse the command line arguments.

Parameters
optctx an opaque options context
argc number of command line arguments
argv values of command line arguments
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.
int parse_option ( void *  optctx,
const char *  opt,
const char *  arg,
const OptionDef *  options 
)

Parse one given option.

Returns
on success 1 if arg was consumed, 0 otherwise; negative number on error

Definition at line 336 of file cmdutils.c.

Referenced by open_output_file(), opt_audio_codec(), opt_audio_filters(), opt_audio_frames(), opt_audio_qscale(), opt_channel_layout(), opt_data_codec(), opt_data_frames(), opt_old2new(), opt_qscale(), opt_recording_timestamp(), opt_subtitle_codec(), opt_target(), opt_timecode(), opt_video_codec(), opt_video_filters(), opt_video_frames(), and parse_options().

int parse_optgroup ( void *  optctx,
OptionGroup *  g 
)

Parse an options group and write results into optctx.

Parameters
optctx an app-specific options context. NULL for global options group

Definition at line 400 of file cmdutils.c.

Referenced by ffmpeg_parse_options(), and open_files().

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.

The commandline is assumed to be composed of options which either belong to a group (those with OPT_SPEC, OPT_OFFSET or OPT_PERFILE) or are global (everything else).

A group (defined by an OptionGroupDef struct) is a sequence of options terminated by either a group separator option (e.g. -i) or a parameter that is not an option (doesn't start with -). A group without a separator option must always be first in the supplied groups list.

All options within the same group are stored in one OptionGroup struct in an OptionGroupList, all groups with the same group definition are stored in one OptionGroupList in OptionParseContext.groups. The order of group lists is the same as the order of group definitions.

Definition at line 719 of file cmdutils.c.

Referenced by ffmpeg_parse_options().

void uninit_parse_context ( OptionParseContext *  octx )

Free all allocated memory in an OptionParseContext.

Definition at line 692 of file cmdutils.c.

Referenced by ffmpeg_parse_options().

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

Find the '-loglevel' option in the command line args and apply it.

Definition at line 483 of file cmdutils.c.

Referenced by main().

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 at line 433 of file cmdutils.c.

Referenced by parse_loglevel(), and show_banner().

int check_stream_specifier ( AVFormatContext *  s,
AVStream *  st,
const char *  spec 
)

Check if the given stream matches a stream specifier.

Parameters
s Corresponding format context.
st Stream from s to be checked.
spec A stream specifier of the [v|a|s|d]:[<stream index>] form.
Returns
1 if the stream matches, 0 if it doesn't, <0 on error

Definition at line 1971 of file cmdutils.c.

Referenced by copy_metadata(), filter_codec_opts(), init_input_filter(), open_input_file(), open_output_file(), and opt_map().

AVDictionary* filter_codec_opts ( AVDictionary *  opts,
enum AVCodecID  codec_id,
AVFormatContext *  s,
AVStream *  st,
AVCodec *  codec 
)

Filter out options for given codec.

Create a new options dictionary containing only the options from opts which apply to the codec with ID codec_id.

Parameters
opts dictionary to place options in
codec_id ID of the codec that should be filtered for
s Corresponding format context.
st A stream from s for which the options should be filtered.
codec The particular codec for which the options should be filtered. If null, the default one is looked up according to the codec id.
Returns
a pointer to the created dictionary

Definition at line 1979 of file cmdutils.c.

Referenced by add_input_streams(), new_output_stream(), open_input_file(), setup_find_stream_info_opts(), and stream_component_open().

AVDictionary** setup_find_stream_info_opts ( AVFormatContext *  s,
AVDictionary *  codec_opts 
)

Setup AVCodecContext options for avformat_find_stream_info().

Create an array of dictionaries, one dictionary for each stream contained in s. Each dictionary will contain the options from codec_opts which can be applied to the corresponding stream codec context.

Returns
pointer to the created array of dictionaries, NULL if it cannot be created

Definition at line 2036 of file cmdutils.c.

Referenced by open_input_file(), and read_thread().

void print_error ( const char *  filename,
int  err 
)

Print an error message to stderr, indicating filename and a human readable description of the error code err.

If strerror_r() is not available the use of this function in a multithreaded application may be unsafe.

See Also
av_strerror()

Definition at line 1017 of file cmdutils.c.

Referenced by open_input_file(), open_output_file(), process_input(), read_thread(), and write_frame().

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

Print the program banner to stderr.

The banner contents depend on the current version of the repository and of the libav* libraries used by the program.

Definition at line 1115 of file cmdutils.c.

Referenced by main().

int show_version ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print the version of the program to stdout.

The version message depends on the current versions of the repository and of the libav* libraries. This option processing function does not utilize the arguments.

Definition at line 1126 of file cmdutils.c.

int show_buildconf ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print the build configuration of the program to stdout.

The contents depend on the definition of FFMPEG_CONFIGURATION. This option processing function does not utilize the arguments.

Definition at line 1135 of file cmdutils.c.

int show_license ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print the license of the program to stdout.

The license depends on the license of the libraries compiled into the program. This option processing function does not utilize the arguments.

Definition at line 1143 of file cmdutils.c.

int show_formats ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print a listing containing all the formats supported by the program (including devices).

This option processing function does not utilize the arguments.

Definition at line 1279 of file cmdutils.c.

int show_devices ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print a listing containing all the devices supported by the program.

This option processing function does not utilize the arguments.

Definition at line 1284 of file cmdutils.c.

int show_codecs ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print a listing containing all the codecs supported by the program.

This option processing function does not utilize the arguments.

Definition at line 1414 of file cmdutils.c.

int show_decoders ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print a listing containing all the decoders supported by the program.

Definition at line 1507 of file cmdutils.c.

int show_encoders ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print a listing containing all the encoders supported by the program.

Definition at line 1513 of file cmdutils.c.

int show_filters ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print a listing containing all the filters supported by the program.

This option processing function does not utilize the arguments.

Definition at line 1545 of file cmdutils.c.

int show_bsfs ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print a listing containing all the bit stream filters supported by the program.

This option processing function does not utilize the arguments.

Definition at line 1519 of file cmdutils.c.

int show_protocols ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print a listing containing all the protocols supported by the program.

This option processing function does not utilize the arguments.

Definition at line 1530 of file cmdutils.c.

int show_pix_fmts ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print a listing containing all the pixel formats supported by the program.

This option processing function does not utilize the arguments.

Definition at line 1605 of file cmdutils.c.

int show_layouts ( void *  optctx,
const char *  opt,
const char *  arg 
)

Print a listing containing all the standard channel layouts supported by the program.

This option processing function does not utilize the arguments.

Definition at line 1638 of file cmdutils.c.

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 at line 1667 of file cmdutils.c.

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 at line 1591 of file cmdutils.c.

int read_yesno ( void  )

Return a positive value if a line read from standard input starts with [yY], otherwise return 0.

Definition at line 1852 of file cmdutils.c.

Referenced by assert_file_overwrite().

int cmdutils_read_file ( const char *  filename,
char **  bufptr,
size_t *  size 
)

Read the file with name filename, and put its content in a newly allocated 0-terminated buffer.

Parameters
filename file to read from
bufptr location where pointer to buffer is returned
size location where size of buffer is returned
Returns
>= 0 in case of success, a negative value corresponding to an AVERROR error code in case of failure.

Definition at line 1863 of file cmdutils.c.

Referenced by transcode_init().

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.

If is_path is non-zero, look for the file in the path preset_name. Otherwise search for a file named arg.ffpreset in the directories $FFMPEG_DATADIR (if set), $HOME/.ffmpeg, and in the datadir defined at configuration time or in a "ffpresets" folder along the executable on win32, in that order. If no such file is found and codec_name is defined, then search for a file named codec_name-preset_name.avpreset in the above-mentioned directories.

Parameters
filename buffer where the name of the found filename is written
filename_size size in bytes of the filename buffer
preset_name name of the preset to search
is_path tell if preset_name is a filename path
codec_name name of the codec for which to look for the preset, may be NULL

Definition at line 1921 of file cmdutils.c.

Referenced by ffserver_opt_preset(), and opt_preset().

void* grow_array ( void *  array,
int  elem_size,
int *  size,
int  new_size 
)

Realloc array to hold new_size elements of elem_size.

Calls exit() on failure.

Parameters
array array to reallocate
elem_size size in bytes of each element
size new element count will be written here
new_size number of elements to place in reallocated array
Returns
reallocated array

Definition at line 2056 of file cmdutils.c.

Referenced by opt_streamid(), and write_option().

Variable Documentation

const char program_name[]

program name, defined by the program for show_version().

Definition at line 106 of file ffmpeg.c.

Referenced by compute_status(), expand_filename_template(), init_report(), main(), print_program_info(), show_help_default(), show_license(), and show_usage().

const int program_birth_year

program birth year, defined by the program for show_banner()

Definition at line 107 of file ffmpeg.c.

Referenced by ffprobe_show_program_version(), and print_program_info().

AVCodecContext* avcodec_opts[AVMEDIA_TYPE_NB]
AVFormatContext* avformat_opts
struct SwsContext* sws_opts

Definition at line 64 of file cmdutils.c.

Referenced by finish_group(), and queue_picture().

AVDictionary* swr_opts

Definition at line 65 of file cmdutils.c.

Referenced by finish_group().

AVDictionary* format_opts

Definition at line 66 of file cmdutils.c.

Referenced by finish_group(), main(), open_input_file(), opt_default_new(), opt_target(), and read_thread().

AVDictionary * codec_opts

Definition at line 66 of file cmdutils.c.

Referenced by finish_group(), open_input_file(), opt_default_new(), opt_target(), read_thread(), and stream_component_open().

AVDictionary * resample_opts

Definition at line 66 of file cmdutils.c.

Referenced by finish_group().

int hide_banner

Definition at line 70 of file cmdutils.c.

Referenced by parse_loglevel(), and show_banner().

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