cmdutils.c File Reference

#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <math.h>
#include "config.h"
#include "compat/va_copy.h"
#include "libavformat/avformat.h"
#include "libavfilter/avfilter.h"
#include "libavdevice/avdevice.h"
#include "libavresample/avresample.h"
#include "libswscale/swscale.h"
#include "libswresample/swresample.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/mathematics.h"
#include "libavutil/imgutils.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/eval.h"
#include "libavutil/dict.h"
#include "libavutil/opt.h"
#include "cmdutils.h"
#include "version.h"

Go to the source code of this file.

Defines

#define FLAGS   (o->type == AV_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0
#define INDENT   1
#define SHOW_VERSION   2
#define SHOW_CONFIG   4
#define SHOW_COPYRIGHT   8
#define PRINT_LIB_INFO(libname, LIBNAME, flags, level)
#define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name)
#define sws_isSupportedInput(x)   0
#define sws_isSupportedOutput(x)   0

Functions

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.
static void log_callback_report (void *ptr, int level, const char *fmt, va_list vl)
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.
static const OptionDef * find_option (const OptionDef *po, const char *name)
static void prepare_app_arguments (int *argc_ptr, char ***argv_ptr)
int parse_option (void *optctx, const char *opt, const char *arg, const OptionDef *options)
 Parse one given option.
void parse_options (void *optctx, int argc, char **argv, const OptionDef *options, void(*parse_arg_function)(void *, const char *))
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.
static void dump_argument (const char *a)
void parse_loglevel (int argc, char **argv, const OptionDef *options)
 Find the '-loglevel' option in the command line args and apply it.
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_cpuflags (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.
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.
static void print_all_libs_info (int flags, int level)
static void print_program_info (int flags, int level)
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_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.
static void print_codec (const AVCodec *c)
static char get_media_type_char (enum AVMediaType type)
static const AVCodec * next_codec_for_id (enum AVCodecID id, const AVCodec *prev, int encoder)
static int compare_codec_desc (const void *a, const void *b)
static unsigned get_codecs_sorted (const AVCodecDescriptor ***rcodecs)
static void print_codecs_for_id (enum AVCodecID id, int encoder)
int show_codecs (void *optctx, const char *opt, const char *arg)
 Print a listing containing all the codecs supported by the program.
static void print_codecs (int encoder)
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_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_filters (void *optctx, const char *opt, const char *arg)
 Print a listing containing all the filters 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.
static void show_help_codec (const char *name, int encoder)
static void show_help_demuxer (const char *name)
static void show_help_muxer (const char *name)
int show_help (void *optctx, const char *opt, const char *arg)
 Generic -h handler common to all avtools.
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.
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 * grow_array (void *array, int elem_size, int *size, int new_size)
 Realloc array to hold new_size elements of elem_size.
static int alloc_buffer (FrameBuffer **pool, AVCodecContext *s, FrameBuffer **pbuf)
int codec_get_buffer (AVCodecContext *s, AVFrame *frame)
 Get a frame from the pool.
static void unref_buffer (FrameBuffer *buf)
void codec_release_buffer (AVCodecContext *s, AVFrame *frame)
 A callback to be used for AVCodecContext.release_buffer along with codec_get_buffer().
void filter_release_buffer (AVFilterBuffer *fb)
 A callback to be used for AVFilterBuffer.free.
void free_buffer_pool (FrameBuffer **pool)
 Free all the buffers in the pool.

Variables

struct SwsContext * sws_opts
SwrContext * swr_opts
AVDictionary * format_opts
AVDictionary * codec_opts
const int this_year = 2012
 this year, defined by the program for show_banner()
static FILE * report_file
static int warned_cfg = 0

Define Documentation

#define FLAGS   (o->type == AV_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0

Definition at line 435 of file cmdutils.c.

Referenced by opt_default().

#define INDENT   1

Definition at line 609 of file cmdutils.c.

Referenced by print_program_info(), and show_banner().

#define PRINT_CODEC_SUPPORTED ( codec,
field,
type,
list_name,
term,
get_name   ) 

Value:

if (codec->field) {                                                      \
        const type *p = c->field;                                            \
                                                                             \
        printf("    Supported " list_name ":");                              \
        while (*p != term) {                                                 \
            get_name(*p);                                                    \
            printf(" %s", name);                                             \
            p++;                                                             \
        }                                                                    \
        printf("\n");                                                        \
    }                                                                        \

Definition at line 811 of file cmdutils.c.

Referenced by print_codec().

#define PRINT_LIB_INFO ( libname,
LIBNAME,
flags,
level   ) 

Value:

if (CONFIG_##LIBNAME) {                                             \
        const char *indent = flags & INDENT? "  " : "";                 \
        if (flags & SHOW_VERSION) {                                     \
            unsigned int version = libname##_version();                 \
            av_log(NULL, level,                                         \
                   "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n",            \
                   indent, #libname,                                    \
                   LIB##LIBNAME##_VERSION_MAJOR,                        \
                   LIB##LIBNAME##_VERSION_MINOR,                        \
                   LIB##LIBNAME##_VERSION_MICRO,                        \
                   version >> 16, version >> 8 & 0xff, version & 0xff); \
        }                                                               \
        if (flags & SHOW_CONFIG) {                                      \
            const char *cfg = libname##_configuration();                \
            if (strcmp(FFMPEG_CONFIGURATION, cfg)) {                    \
                if (!warned_cfg) {                                      \
                    av_log(NULL, level,                                 \
                            "%sWARNING: library configuration mismatch\n", \
                            indent);                                    \
                    warned_cfg = 1;                                     \
                }                                                       \
                av_log(NULL, level, "%s%-11s configuration: %s\n",      \
                        indent, #libname, cfg);                         \
            }                                                           \
        }                                                               \
    }                                                                   \

Definition at line 614 of file cmdutils.c.

Referenced by print_all_libs_info().

#define SHOW_CONFIG   4

Definition at line 611 of file cmdutils.c.

Referenced by show_banner().

#define SHOW_COPYRIGHT   8

Definition at line 612 of file cmdutils.c.

Referenced by print_program_info(), and show_banner().

#define SHOW_VERSION   2

Definition at line 610 of file cmdutils.c.

Referenced by show_banner(), and show_version().

#define sws_isSupportedInput ( x   )     0

Referenced by query_formats(), selfTest(), show_pix_fmts(), sws_init_context(), and sws_isSupportedInput().

#define sws_isSupportedOutput ( x   )     0

Referenced by query_formats(), selfTest(), show_pix_fmts(), sws_init_context(), and sws_isSupportedOutput().

Function Documentation

static int alloc_buffer ( FrameBuffer **  pool,
AVCodecContext *  s,
FrameBuffer **  pbuf 
) [static]

Definition at line 1485 of file cmdutils.c.

Referenced by codec_get_buffer(), ff_vaapi_alloc_bitplane(), ff_vaapi_alloc_iq_matrix(), ff_vaapi_alloc_pic_param(), and pullup_get_buffer().

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 1380 of file cmdutils.c.

Referenced by copy_metadata(), filter_codec_opts(), init_input_filter(), opt_input_file(), opt_map(), and opt_output_file().

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:
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 1293 of file cmdutils.c.

Referenced by transcode_init().

int codec_get_buffer ( AVCodecContext *  s,
AVFrame *  frame 
)

Get a frame from the pool.

This is intended to be used as a callback for AVCodecContext.get_buffer.

Parameters:
s codec context. s->opaque must be a pointer to the head of the buffer pool.
frame frame->opaque will be set to point to the FrameBuffer containing the frame data.

Definition at line 1537 of file cmdutils.c.

Referenced by init_input_stream(), and video_thread().

void codec_release_buffer ( AVCodecContext *  s,
AVFrame *  frame 
)

A callback to be used for AVCodecContext.release_buffer along with codec_get_buffer().

Definition at line 1597 of file cmdutils.c.

Referenced by init_input_stream(), and video_thread().

static int compare_codec_desc ( const void *  a,
const void *  b 
) [static]

Definition at line 893 of file cmdutils.c.

Referenced by get_codecs_sorted().

static void dump_argument ( const char *  a  )  [static]

Definition at line 389 of file cmdutils.c.

Referenced by parse_loglevel().

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:
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 1388 of file cmdutils.c.

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

void filter_release_buffer ( AVFilterBuffer *  fb  ) 

A callback to be used for AVFilterBuffer.free.

Parameters:
fb buffer to free. fb->priv must be a pointer to the FrameBuffer containing the buffer data.

Definition at line 1613 of file cmdutils.c.

Referenced by decode_video(), and video_thread().

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

Definition at line 186 of file cmdutils.c.

Referenced by locate_option(), and parse_option().

void free_buffer_pool ( FrameBuffer **  pool  ) 

Free all the buffers in the pool.

This must be called after all the buffers have been released.

Definition at line 1620 of file cmdutils.c.

Referenced by exit_program(), and stream_component_close().

static unsigned get_codecs_sorted ( const AVCodecDescriptor ***  rcodecs  )  [static]

Definition at line 902 of file cmdutils.c.

Referenced by print_codecs(), and show_codecs().

static char get_media_type_char ( enum AVMediaType  type  )  [static]

Definition at line 870 of file cmdutils.c.

Referenced by print_codecs(), show_codecs(), and show_filters().

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 1330 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_program() on failure.

Parameters:
elem_size size in bytes of each element
size new element count will be written here
Returns:
reallocated array

Definition at line 1466 of file cmdutils.c.

Referenced by add_input_streams(), configure_filtergraph(), DEF_CHOOSE_FORMAT(), init_input_filter(), new_output_stream(), opt_attach(), opt_filter_complex(), opt_input_file(), opt_map(), opt_map_channel(), opt_output_file(), opt_streamid(), and parse_option().

void init_opts ( void   ) 

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

Definition at line 68 of file cmdutils.c.

Referenced by main(), and reset_options().

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 363 of file cmdutils.c.

Referenced by parse_cpuflags(), parse_loglevel(), and show_banner().

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_help(), show_help_default(), and show_version().

static void log_callback_report ( void *  ptr,
int  level,
const char *  fmt,
va_list  vl 
) [static]

Definition at line 98 of file cmdutils.c.

Referenced by opt_report().

static const AVCodec* next_codec_for_id ( enum AVCodecID  id,
const AVCodec *  prev,
int  encoder 
) [static]

Definition at line 882 of file cmdutils.c.

Referenced by print_codecs(), print_codecs_for_id(), show_codecs(), and show_help_codec().

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

Definition at line 578 of file cmdutils.c.

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

Definition at line 566 of file cmdutils.c.

Referenced by parse_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.

Definition at line 436 of file cmdutils.c.

Referenced by opt_bitrate(), opt_channel_layout(), opt_codec_debug(), opt_frame_pix_fmt(), opt_frame_size(), opt_preset(), opt_profile(), opt_target(), opt_timecode(), opt_video_channel(), and opt_video_standard().

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

Set the libav* libraries log level.

Definition at line 485 of file cmdutils.c.

Referenced by parse_loglevel().

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

Definition at line 552 of file cmdutils.c.

int opt_report ( const char *  opt  ) 

Definition at line 520 of file cmdutils.c.

Referenced by parse_loglevel().

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

Limit the execution time.

Definition at line 584 of file cmdutils.c.

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 413 of file cmdutils.c.

Referenced by main().

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 112 of file cmdutils.c.

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

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 261 of file cmdutils.c.

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

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

Definition at line 332 of file cmdutils.c.

Referenced by main(), and parse_script().

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:
parse_date()

Definition at line 133 of file cmdutils.c.

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

static void prepare_app_arguments ( int *  argc_ptr,
char ***  argv_ptr 
) [inline, static]

Definition at line 255 of file cmdutils.c.

Referenced by parse_options().

static void print_all_libs_info ( int  flags,
int  level 
) [static]

Definition at line 642 of file cmdutils.c.

Referenced by show_banner(), and show_version().

static void print_codec ( const AVCodec *  c  )  [static]

Definition at line 824 of file cmdutils.c.

Referenced by show_help_codec().

static void print_codecs ( int  encoder  )  [static]

Definition at line 987 of file cmdutils.c.

Referenced by show_decoders(), and show_encoders().

static void print_codecs_for_id ( enum AVCodecID  id,
int  encoder 
) [static]

Definition at line 923 of file cmdutils.c.

Referenced by show_codecs().

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 597 of file cmdutils.c.

Referenced by open_input_file(), opt_input_file(), opt_output_file(), process_input(), read_thread(), and write_frame().

static void print_program_info ( int  flags,
int  level 
) [static]

Definition at line 657 of file cmdutils.c.

Referenced by show_banner(), and show_version().

int read_yesno ( void   ) 

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

Definition at line 1282 of file cmdutils.c.

Referenced by assert_file_overwrite().

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 1446 of file cmdutils.c.

Referenced by opt_input_file(), and read_thread().

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 672 of file cmdutils.c.

Referenced by main().

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 1037 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 935 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 1025 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 1031 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 1063 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.

This option processing function does not utilize the arguments.

Definition at line 763 of file cmdutils.c.

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

Generic -h handler common to all avtools.

Definition at line 1254 of file cmdutils.c.

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 174 of file cmdutils.c.

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

static void show_help_codec ( const char *  name,
int  encoder 
) [static]

Definition at line 1168 of file cmdutils.c.

Referenced by show_help().

static void show_help_demuxer ( const char *  name  )  [static]

Definition at line 1203 of file cmdutils.c.

Referenced by show_help().

static void show_help_muxer ( const char *  name  )  [static]

Definition at line 1221 of file cmdutils.c.

Referenced by show_help().

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 145 of file cmdutils.c.

Referenced by show_help_default().

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 1130 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 692 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 1095 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 1048 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 1159 of file cmdutils.c.

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 683 of file cmdutils.c.

void uninit_opts ( void   ) 

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

Definition at line 79 of file cmdutils.c.

Referenced by do_exit(), exit_program(), main(), and reset_options().

static void unref_buffer ( FrameBuffer *  buf  )  [static]

Definition at line 1581 of file cmdutils.c.

Referenced by codec_release_buffer(), and filter_release_buffer().

Variable Documentation

AVDictionary * codec_opts

Definition at line 62 of file cmdutils.c.

Referenced by add_input_streams(), new_output_stream(), opt_input_file(), opt_output_file(), read_thread(), and stream_component_open().

AVDictionary* format_opts

Definition at line 62 of file cmdutils.c.

Referenced by main(), open_input_file(), opt_input_file(), opt_output_file(), and read_thread().

FILE* report_file [static]

Definition at line 66 of file cmdutils.c.

Referenced by dump_argument(), log_callback_report(), opt_report(), and parse_loglevel().

SwrContext* swr_opts

Definition at line 61 of file cmdutils.c.

Referenced by new_output_stream().

struct SwsContext* sws_opts

Definition at line 60 of file cmdutils.c.

Referenced by new_output_stream(), and queue_picture().

const int this_year = 2012

this year, defined by the program for show_banner()

Definition at line 64 of file cmdutils.c.

Referenced by ffprobe_show_program_version(), and print_program_info().

int warned_cfg = 0 [static]

Definition at line 607 of file cmdutils.c.

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