f_select.c File Reference

filter for selecting which frame passes in the filterchain More...

#include "config_components.h"
#include "libavutil/avstring.h"
#include "libavutil/eval.h"
#include "libavutil/fifo.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "audio.h"
#include "filters.h"
#include "formats.h"
#include "video.h"
#include "scene_sad.h"

Go to the source code of this file.

Data Structures
struct	SelectContext

Macros
#define	OFFSET(x)
#define	DEFINE_OPTIONS(filt_name, FLAGS)
#define	INTERLACE_TYPE_P   0
#define	INTERLACE_TYPE_T   1
#define	INTERLACE_TYPE_B   2

Enumerations
enum	var_name {   VAR_TB , VAR_PTS , VAR_START_PTS , VAR_PREV_PTS ,   VAR_PREV_SELECTED_PTS , VAR_T , VAR_START_T , VAR_PREV_T ,   VAR_PREV_SELECTED_T , VAR_PICT_TYPE , VAR_I , VAR_P ,   VAR_B , VAR_S , VAR_SI , VAR_SP ,   VAR_BI , VAR_PICT_TYPE_I , VAR_PICT_TYPE_P , VAR_PICT_TYPE_B ,   VAR_PICT_TYPE_S , VAR_PICT_TYPE_SI , VAR_PICT_TYPE_SP , VAR_PICT_TYPE_BI ,   VAR_INTERLACE_TYPE , VAR_INTERLACE_TYPE_P , VAR_INTERLACE_TYPE_T , VAR_INTERLACE_TYPE_B ,   VAR_CONSUMED_SAMPLES_N , VAR_SAMPLES_N , VAR_SAMPLE_RATE , VAR_N ,   VAR_SELECTED_N , VAR_PREV_SELECTED_N , VAR_KEY , VAR_SCENE ,   VAR_CONCATDEC_SELECT , VAR_IH , VAR_IW , VAR_VIEW ,   VAR_VARS_NB }

Functions
static av_cold int	init (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static double	get_scene_score (AVFilterContext *ctx, AVFrame *frame)
static double	get_concatdec_select (AVFrame *frame, int64_t pts)
static void	select_frame (AVFilterContext *ctx, AVFrame *frame)
static int	activate (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const char *const	var_names []

Detailed Description

filter for selecting which frame passes in the filterchain

Definition in file f_select.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(SelectContext, x)

Definition at line 172 of file f_select.c.

DEFINE_OPTIONS

#define DEFINE_OPTIONS	(		filt_name,
			FLAGS )

Value:

static const AVOption filt_name##_options[] = {                     \
    { "expr", "set an expression to use for selecting frames", OFFSET(expr_str), AV_OPT_TYPE_STRING, { .str = "1" }, .flags=FLAGS }, \
    { "e",    "set an expression to use for selecting frames", OFFSET(expr_str), AV_OPT_TYPE_STRING, { .str = "1" }, .flags=FLAGS }, \
    { "outputs", "set the number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, .flags=FLAGS }, \
    { "n",       "set the number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, .flags=FLAGS }, \
    { NULL }                                                            \
}

Definition at line 173 of file f_select.c.

INTERLACE_TYPE_P

#define INTERLACE_TYPE_P   0

Definition at line 209 of file f_select.c.

Referenced by config_input(), and select_frame().

INTERLACE_TYPE_T

#define INTERLACE_TYPE_T   1

Definition at line 210 of file f_select.c.

Referenced by config_input(), and select_frame().

INTERLACE_TYPE_B

#define INTERLACE_TYPE_B   2

Definition at line 211 of file f_select.c.

Referenced by config_input(), and select_frame().

Enumeration Type Documentation

var_name

enum var_name

Enumerator
VAR_TB
VAR_PTS
VAR_START_PTS
VAR_PREV_PTS
VAR_PREV_SELECTED_PTS
VAR_T
VAR_START_T
VAR_PREV_T
VAR_PREV_SELECTED_T
VAR_PICT_TYPE
VAR_I
VAR_P
VAR_B
VAR_S
VAR_SI
VAR_SP
VAR_BI
VAR_PICT_TYPE_I
VAR_PICT_TYPE_P
VAR_PICT_TYPE_B
VAR_PICT_TYPE_S
VAR_PICT_TYPE_SI
VAR_PICT_TYPE_SP
VAR_PICT_TYPE_BI
VAR_INTERLACE_TYPE
VAR_INTERLACE_TYPE_P
VAR_INTERLACE_TYPE_T
VAR_INTERLACE_TYPE_B
VAR_CONSUMED_SAMPLES_N
VAR_SAMPLES_N
VAR_SAMPLE_RATE
VAR_N
VAR_SELECTED_N
VAR_PREV_SELECTED_N
VAR_KEY
VAR_SCENE
VAR_CONCATDEC_SELECT
VAR_IH
VAR_IW
VAR_VIEW
VAR_VARS_NB

Definition at line 98 of file f_select.c.

Function Documentation

init()

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 182 of file f_select.c.

config_input()

static int config_input ( AVFilterLink * inlink )

static

Definition at line 213 of file f_select.c.

get_scene_score()

static double get_scene_score ( AVFilterContext * ctx, AVFrame * frame )

static

Definition at line 282 of file f_select.c.

Referenced by select_frame().

get_concatdec_select()

static double get_concatdec_select ( AVFrame * frame, int64_t pts )

static

Definition at line 314 of file f_select.c.

Referenced by select_frame().

select_frame()

static void select_frame ( AVFilterContext * ctx, AVFrame * frame )

static

Definition at line 336 of file f_select.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 428 of file f_select.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 459 of file f_select.c.

Variable Documentation

var_names

const char* const var_names[]

static

Definition at line 42 of file f_select.c.