Libav 0.7.1
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#include <stdint.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 | OptionDef |
struct | PtsCorrectionContext |
struct | FFSinkContext |
Defines | |
#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_GRAB 0x0040 |
#define | OPT_INT 0x0080 |
#define | OPT_FLOAT 0x0100 |
#define | OPT_SUBTITLE 0x0200 |
#define | OPT_INT64 0x0400 |
#define | OPT_EXIT 0x0800 |
#define | OPT_DATA 0x1000 |
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. | |
int | opt_default (const char *opt, const char *arg) |
Fallback for options that are not explicitly handled, these will be parsed through AVOptions. | |
int | opt_loglevel (const char *opt, const char *arg) |
Set the libav* libraries log level. | |
int | opt_timelimit (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 mask, int value) |
void | parse_options (int argc, char **argv, const OptionDef *options, void(*parse_arg_function)(const char *)) |
Parse the command line arguments. | |
void | set_context_opts (void *ctx, void *opts_ctx, int flags, AVCodec *codec) |
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 (void) |
Print the program banner to stderr. | |
void | show_version (void) |
Print the version of the program to stdout. | |
void | show_license (void) |
Print the license of the program to stdout. | |
void | show_formats (void) |
Print a listing containing all the formats supported by the program. | |
void | show_codecs (void) |
Print a listing containing all the codecs supported by the program. | |
void | show_filters (void) |
Print a listing containing all the filters supported by the program. | |
void | show_bsfs (void) |
Print a listing containing all the bit stream filters supported by the program. | |
void | show_protocols (void) |
Print a listing containing all the protocols supported by the program. | |
void | show_pix_fmts (void) |
Print a listing containing all the pixel formats supported 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 | 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. | |
void | init_pts_correction (PtsCorrectionContext *ctx) |
Reset the state of the PtsCorrectionContext. | |
int64_t | guess_correct_pts (PtsCorrectionContext *ctx, int64_t pts, int64_t dts) |
Attempt to guess proper monotonic timestamps for decoded video frames which might have incorrect times. | |
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 | get_filtered_video_frame (AVFilterContext *sink, AVFrame *frame, AVFilterBufferRef **picref, AVRational *pts_tb) |
Extract a frame from sink. | |
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() | |
const char ** | opt_names |
AVCodecContext * | avcodec_opts [AVMEDIA_TYPE_NB] |
AVFormatContext * | avformat_opts |
struct SwsContext * | sws_opts |
AVDictionary * | format_opts |
AVDictionary * | video_opts |
AVDictionary * | audio_opts |
AVDictionary * | sub_opts |
AVFilter | ffsink |
#define HAS_ARG 0x0001 |
Definition at line 115 of file cmdutils.h.
Referenced by parse_options(), and show_help_options().
#define OPT_AUDIO 0x0020 |
Definition at line 120 of file cmdutils.h.
Referenced by show_help().
#define OPT_BOOL 0x0002 |
Definition at line 116 of file cmdutils.h.
Referenced by parse_options().
#define OPT_DATA 0x1000 |
Definition at line 127 of file cmdutils.h.
#define OPT_EXIT 0x0800 |
Definition at line 126 of file cmdutils.h.
Referenced by parse_options().
#define OPT_EXPERT 0x0004 |
Definition at line 117 of file cmdutils.h.
Referenced by show_help().
#define OPT_FLOAT 0x0100 |
Definition at line 123 of file cmdutils.h.
Referenced by opt_qscale(), and parse_options().
#define OPT_GRAB 0x0040 |
Definition at line 121 of file cmdutils.h.
Referenced by show_help().
#define OPT_INT 0x0080 |
Definition at line 122 of file cmdutils.h.
Referenced by opt_pass(), opt_streamid(), opt_top_field_first(), parse_number_or_die(), and parse_options().
#define OPT_INT64 0x0400 |
Definition at line 125 of file cmdutils.h.
Referenced by opt_audio_channels(), opt_audio_rate(), opt_debug(), opt_height(), opt_me_threshold(), opt_thread_count(), opt_timelimit(), opt_verbose(), opt_vismv(), opt_width(), parse_number_or_die(), and parse_options().
#define OPT_STRING 0x0008 |
Definition at line 118 of file cmdutils.h.
Referenced by parse_options().
#define OPT_SUBTITLE 0x0200 |
Definition at line 124 of file cmdutils.h.
Referenced by show_help().
#define OPT_VIDEO 0x0010 |
Definition at line 119 of file cmdutils.h.
Referenced by show_help().
int get_filtered_video_frame | ( | AVFilterContext * | sink, |
AVFrame * | frame, | ||
AVFilterBufferRef ** | picref, | ||
AVRational * | pts_tb | ||
) |
Extract a frame from sink.
Referenced by output_packet(), and video_thread().
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, in that order. If no such file is found and codec_name is defined, then search for a file named codec_name-preset_name.ffpreset in the above-mentioned directories.
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 872 of file cmdutils.c.
Referenced by ffserver_opt_preset(), and opt_preset().
int64_t guess_correct_pts | ( | PtsCorrectionContext * | ctx, |
int64_t | pts, | ||
int64_t | dts | ||
) |
Attempt to guess proper monotonic timestamps for decoded video frames which might have incorrect times.
Input timestamps may wrap around, in which case the output will as well.
pts | the pts field of the decoded AVPacket, as passed through AVCodecContext.reordered_opaque |
dts | the dts field of the decoded AVPacket |
Definition at line 851 of file cmdutils.c.
Referenced by get_video_frame(), and output_packet().
void init_opts | ( | void | ) |
Initialize the cmdutils option system, in particular allocate the *_opts contexts.
Definition at line 62 of file cmdutils.c.
Referenced by main(), opt_input_file(), and opt_output_file().
void init_pts_correction | ( | PtsCorrectionContext * | ctx | ) |
Reset the state of the PtsCorrectionContext.
Definition at line 845 of file cmdutils.c.
Referenced by get_video_frame(), and transcode().
void log_callback_help | ( | void * | ptr, |
int | level, | ||
const char * | fmt, | ||
va_list | vl | ||
) |
Trivial log callback.
Only suitable for show_help and similar since it lacks prefix handling.
Definition at line 101 of file cmdutils.c.
Referenced by show_help().
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 338 of file cmdutils.c.
Referenced by opt_bitrate(), opt_preset(), opt_target(), opt_video_channel(), and opt_video_standard().
int opt_loglevel | ( | const char * | opt, |
const char * | arg | ||
) |
Set the libav* libraries log level.
Definition at line 398 of file cmdutils.c.
int opt_timelimit | ( | const char * | opt, |
const char * | arg | ||
) |
Limit the execution time.
Definition at line 433 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.
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 106 of file cmdutils.c.
Referenced by opt_audio_channels(), opt_audio_rate(), opt_debug(), opt_height(), opt_me_threshold(), opt_pass(), opt_qscale(), opt_streamid(), opt_thread_count(), opt_timelimit(), opt_top_field_first(), 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 | ||
) |
Parse the 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. |
Definition at line 229 of file cmdutils.c.
Referenced by main().
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.
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 |
Definition at line 125 of file cmdutils.c.
Referenced by opt_duration(), opt_input_ts_offset(), opt_recording_time(), opt_recording_timestamp(), opt_seek(), opt_start_time(), and parse_forced_key_frames().
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.
Definition at line 478 of file cmdutils.c.
Referenced by decode_thread(), open_input_file(), opt_input_file(), opt_output_file(), read_ffserver_streams(), and write_frame().
int 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.
bufptr | location where pointer to buffer is returned |
size | location where size of buffer is returned |
Definition at line 821 of file cmdutils.c.
Referenced by transcode().
int read_yesno | ( | void | ) |
Return a positive value if a line read from standard input starts with [yY], otherwise return 0.
Definition at line 810 of file cmdutils.c.
Referenced by opt_output_file().
void set_context_opts | ( | void * | ctx, |
void * | opts_ctx, | ||
int | flags, | ||
AVCodec * | codec | ||
) |
Definition at line 446 of file cmdutils.c.
Referenced by decode_thread(), new_audio_stream(), new_subtitle_stream(), new_video_stream(), opt_input_file(), and stream_component_open().
void show_banner | ( | void | ) |
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 532 of file cmdutils.c.
Referenced by main().
void show_bsfs | ( | void | ) |
Print a listing containing all the bit stream filters supported by the program.
Definition at line 742 of file cmdutils.c.
void show_codecs | ( | void | ) |
Print a listing containing all the codecs supported by the program.
Definition at line 666 of file cmdutils.c.
void show_filters | ( | void | ) |
Print a listing containing all the filters supported by the program.
Definition at line 766 of file cmdutils.c.
void show_formats | ( | void | ) |
Print a listing containing all the formats supported by the program.
Definition at line 617 of file cmdutils.c.
void show_help_options | ( | const OptionDef * | options, |
const char * | msg, | ||
int | mask, | ||
int | value | ||
) |
Definition at line 136 of file cmdutils.c.
Referenced by show_help().
void show_license | ( | void | ) |
Print the license of the program to stdout.
The license depends on the license of the libraries compiled into the program.
Definition at line 548 of file cmdutils.c.
void show_pix_fmts | ( | void | ) |
Print a listing containing all the pixel formats supported by the program.
Definition at line 777 of file cmdutils.c.
Referenced by opt_frame_pix_fmt().
void show_protocols | ( | void | ) |
Print a listing containing all the protocols supported by the program.
Definition at line 752 of file cmdutils.c.
void show_version | ( | void | ) |
Print the version of the program to stdout.
The version message depends on the current versions of the repository and of the libav* libraries.
Definition at line 543 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 73 of file cmdutils.c.
Referenced by do_exit(), ffmpeg_exit(), opt_input_file(), and opt_output_file().
Definition at line 58 of file cmdutils.c.
AVCodecContext* avcodec_opts[AVMEDIA_TYPE_NB] |
Definition at line 55 of file cmdutils.c.
Referenced by decode_thread(), new_audio_stream(), new_data_stream(), new_subtitle_stream(), new_video_stream(), opt_bitrate(), opt_input_file(), show_help(), and stream_component_open().
Definition at line 56 of file cmdutils.c.
Referenced by main(), and show_help().
Definition at line 58 of file cmdutils.c.
Referenced by decode_thread(), open_input_file(), opt_input_file(), and opt_output_file().
const char** opt_names |
Definition at line 52 of file cmdutils.c.
Referenced by opt_default(), set_context_opts(), and uninit_opts().
const int program_birth_year |
program birth year, defined by the program for show_banner()
Definition at line 77 of file ffmpeg.c.
Referenced by show_banner().
const char program_name[] |
program name, defined by the program for show_version().
Definition at line 76 of file ffmpeg.c.
Referenced by compute_status(), show_banner(), show_license(), and show_version().
Definition at line 58 of file cmdutils.c.
struct SwsContext* sws_opts |
Definition at line 57 of file cmdutils.c.
Referenced by new_output_stream(), queue_picture(), and show_help().
Definition at line 58 of file cmdutils.c.