Compute a look-up table for binding the input value to the output value, and apply it to input video. More...

#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "drawutils.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Data Structures
struct	LutContext

Macros
#define	Y 0

#define	U 1

#define	V 2

#define	R 0

#define	G 1

#define	B 2

#define	A 3

#define	OFFSET(x) offsetof(LutContext, x)

#define	FLAGS AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_VIDEO_PARAM

#define	YUV_FORMATS

#define	RGB_FORMATS

#define	DEFINE_LUT_FILTER(name_, description_)

Enumerations
enum	var_name { VAR_B1, VAR_B2, VAR_S1, VAR_S2, VAR_T1, VAR_T2, VAR_NB, VAR_N, VAR_T, VAR_S, VAR_VARS_NB, 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_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_POS, VAR_SCENE, VAR_VARS_NB, VAR_FRAME_RATE, VAR_INTERLACED, VAR_N, VAR_NB_CONSUMED_SAMPLES, VAR_NB_SAMPLES, VAR_POS, VAR_PREV_INPTS, VAR_PREV_INT, VAR_PREV_OUTPTS, VAR_PREV_OUTT, VAR_PTS, VAR_SAMPLE_RATE, VAR_STARTPTS, VAR_STARTT, VAR_T, VAR_TB, VAR_RTCTIME, VAR_RTCSTART, VAR_VARS_NB, VAR_AVTB, VAR_INTB, VAR_SR, VAR_VARS_NB, VAR_W, VAR_H, VAR_CW, VAR_CH, VAR_HSUB, VAR_VSUB, VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH, VAR_A, VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB, VAR_X, VAR_Y, VAR_N, VAR_POS, VAR_T, VAR_VARS_NB, VAR_DAR, VAR_HSUB, VAR_VSUB, VAR_LINE_H, VAR_LH, VAR_MAIN_H, VAR_h, VAR_H, VAR_MAIN_W, VAR_w, VAR_W, VAR_MAX_GLYPH_A, VAR_ASCENT, VAR_MAX_GLYPH_D, VAR_DESCENT, VAR_MAX_GLYPH_H, VAR_MAX_GLYPH_W, VAR_N, VAR_SAR, VAR_T, VAR_TEXT_H, VAR_TH, VAR_TEXT_W, VAR_TW, VAR_X, VAR_Y, VAR_VARS_NB, VAR_N, VAR_PTS, VAR_R, VAR_T, VAR_TB, VAR_NB, VAR_W, VAR_H, VAR_VAL, VAR_MAXVAL, VAR_MINVAL, VAR_NEGVAL, VAR_CLIPVAL, VAR_VARS_NB, VAR_MAIN_W, VAR_MW, VAR_MAIN_H, VAR_MH, VAR_OVERLAY_W, VAR_OW, VAR_OVERLAY_H, VAR_OH, VAR_VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH, VAR_X, VAR_Y, VAR_A, VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB, VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH, VAR_A, VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB, VARS_NB, VAR_X, VAR_Y, VAR_W, VAR_H, VAR_TIME, VAR_SPEED, VAR_TEMPO, VAR_ORDER, VAR_PATTERN, VAR_ROW, VAR_VARS_NB }

Functions
static av_cold void	uninit (AVFilterContext *ctx)

static int	query_formats (AVFilterContext *ctx)

static double	clip (void *opaque, double val)
	Clip value val in the minval - maxval range.

static double	compute_gammaval (void *opaque, double gamma)
	Compute gamma correction for value val, assuming the minval-maxval range, val is clipped to a value contained in the same interval.

static int	config_props (AVFilterLink *inlink)

static int	filter_frame (AVFilterLink inlink, AVFilterBufferRef in)

Variables
static const char *const	var_names []

static const AVOption	options []

static enum AVPixelFormat	yuv_pix_fmts [] = { YUV_FORMATS, AV_PIX_FMT_NONE }

static enum AVPixelFormat	rgb_pix_fmts [] = { RGB_FORMATS, AV_PIX_FMT_NONE }

static enum AVPixelFormat	all_pix_fmts [] = { RGB_FORMATS, YUV_FORMATS, AV_PIX_FMT_NONE }

static double(*const	funcs1 [])(void *, double)

static const char *const	funcs1_names []

static const AVFilterPad	inputs []

static const AVFilterPad	outputs []

Detailed Description

Compute a look-up table for binding the input value to the output value, and apply it to input video.

Definition in file vf_lut.c.

Macro Definition Documentation

#define Y 0

Definition at line 71 of file vf_lut.c.

#define U 1

Definition at line 72 of file vf_lut.c.

#define V 2

Definition at line 73 of file vf_lut.c.

#define R 0

Definition at line 74 of file vf_lut.c.

#define G 1

Definition at line 75 of file vf_lut.c.

#define B 2

Definition at line 76 of file vf_lut.c.

#define A 3

Definition at line 77 of file vf_lut.c.

#define OFFSET ( x ) offsetof(LutContext, x)

Definition at line 79 of file vf_lut.c.

#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 80 of file vf_lut.c.

#define YUV_FORMATS

Value:

AV_PIX_FMT_YUV444P,  AV_PIX_FMT_YUV422P,  AV_PIX_FMT_YUV420P,    \
    AV_PIX_FMT_YUV411P,  AV_PIX_FMT_YUV410P,  AV_PIX_FMT_YUV440P,    \
    AV_PIX_FMT_YUVA420P,                                       \
    AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,   \
    AV_PIX_FMT_YUVJ440P

Definition at line 109 of file vf_lut.c.

#define RGB_FORMATS

Value:

AV_PIX_FMT_ARGB,         AV_PIX_FMT_RGBA,         \
    AV_PIX_FMT_ABGR,         AV_PIX_FMT_BGRA,         \
    AV_PIX_FMT_RGB24,        AV_PIX_FMT_BGR24

Definition at line 116 of file vf_lut.c.

#define DEFINE_LUT_FILTER	(	name_,
		description_
	)

Value:

AVFilter avfilter_vf_##name_ = {                                    \
        .name          = #name_,                                        \
        .description   = NULL_IF_CONFIG_SMALL(description_),            \
        .priv_size     = sizeof(LutContext),                            \
                                                                        \
        .init          = name_##_init,                                  \
        .uninit        = uninit,                                        \
        .query_formats = query_formats,                                 \
                                                                        \
        .inputs        = inputs,                                        \
        .outputs       = outputs,                                       \
        .priv_class    = &name_##_class,                                \
    }

Definition at line 336 of file vf_lut.c.

Enumeration Type Documentation

enum var_name

Enumerator:

VAR_B1
VAR_B2
VAR_S1
VAR_S2
VAR_T1
VAR_T2
VAR_NB
VAR_N
VAR_T
VAR_S
VAR_VARS_NB
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_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_POS
VAR_SCENE
VAR_VARS_NB
VAR_FRAME_RATE
VAR_INTERLACED
VAR_N
VAR_NB_CONSUMED_SAMPLES
VAR_NB_SAMPLES
VAR_POS
VAR_PREV_INPTS
VAR_PREV_INT
VAR_PREV_OUTPTS
VAR_PREV_OUTT
VAR_PTS
VAR_SAMPLE_RATE
VAR_STARTPTS
VAR_STARTT
VAR_T
VAR_TB
VAR_RTCTIME
VAR_RTCSTART
VAR_VARS_NB
VAR_AVTB
VAR_INTB
VAR_SR
VAR_VARS_NB
VAR_W
VAR_H
VAR_CW
VAR_CH
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VAR_X
VAR_Y
VAR_N
VAR_POS
VAR_T
VAR_VARS_NB
VAR_DAR
VAR_HSUB
VAR_VSUB
VAR_LINE_H
VAR_LH
VAR_MAIN_H
VAR_h
VAR_H
VAR_MAIN_W
VAR_w
VAR_W
VAR_MAX_GLYPH_A
VAR_ASCENT
VAR_MAX_GLYPH_D
VAR_DESCENT
VAR_MAX_GLYPH_H
VAR_MAX_GLYPH_W
VAR_N
VAR_SAR
VAR_T
VAR_TEXT_H
VAR_TH
VAR_TEXT_W
VAR_TW
VAR_X
VAR_Y
VAR_VARS_NB
VAR_N
VAR_PTS
VAR_R
VAR_T
VAR_TB
VAR_NB
VAR_W
VAR_H
VAR_VAL
VAR_MAXVAL
VAR_MINVAL
VAR_NEGVAL
VAR_CLIPVAL
VAR_VARS_NB
VAR_MAIN_W
VAR_MW
VAR_MAIN_H
VAR_MH
VAR_OVERLAY_W
VAR_OW
VAR_OVERLAY_H
VAR_OH
VAR_VARS_NB
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_X
VAR_Y
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_X
VAR_Y
VAR_W
VAR_H
VAR_TIME
VAR_SPEED
VAR_TEMPO
VAR_ORDER
VAR_PATTERN
VAR_ROW
VAR_VARS_NB

Definition at line 48 of file vf_lut.c.

Function Documentation

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 97 of file vf_lut.c.

static int query_formats ( AVFilterContext * ctx )

static

Definition at line 125 of file vf_lut.c.

static double clip	(	void *	opaque,
		double	val
	)

static

Clip value val in the minval - maxval range.

Definition at line 139 of file vf_lut.c.

Referenced by rv40_loop_filter(), and vc1_filter_line().

static double compute_gammaval	(	void *	opaque,
		double	gamma
	)

static

Compute gamma correction for value val, assuming the minval-maxval range, val is clipped to a value contained in the same interval.

Definition at line 152 of file vf_lut.c.

static int config_props ( AVFilterLink * inlink )

static

Definition at line 174 of file vf_lut.c.

static int filter_frame	(	AVFilterLink *	inlink,
		AVFilterBufferRef *	in
	)

static

Definition at line 256 of file vf_lut.c.

Variable Documentation

const char* const var_names[]

static

Initial value:

= {
    "w",        
    "h",        
    "val",      
    "maxval",   
    "minval",   
    "negval",   
    "clipval",
    NULL
}

Definition at line 37 of file vf_lut.c.

Referenced by config_props().

const AVOption options[]

static

Initial value:

= {
    {"c0", "set component #0 expression", OFFSET(comp_expr_str[0]),  AV_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX, FLAGS},
    {"c1", "set component #1 expression", OFFSET(comp_expr_str[1]),  AV_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX, FLAGS},
    {"c2", "set component #2 expression", OFFSET(comp_expr_str[2]),  AV_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX, FLAGS},
    {"c3", "set component #3 expression", OFFSET(comp_expr_str[3]),  AV_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX, FLAGS},
    {"y",  "set Y expression", OFFSET(comp_expr_str[Y]),  AV_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX, FLAGS},
    {"u",  "set U expression", OFFSET(comp_expr_str[U]),  AV_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX, FLAGS},
    {"v",  "set V expression", OFFSET(comp_expr_str[V]),  AV_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX, FLAGS},
    {"r",  "set R expression", OFFSET(comp_expr_str[R]),  AV_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX, FLAGS},
    {"g",  "set G expression", OFFSET(comp_expr_str[G]),  AV_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX, FLAGS},
    {"b",  "set B expression", OFFSET(comp_expr_str[B]),  AV_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX, FLAGS},
    {"a",  "set A expression", OFFSET(comp_expr_str[A]),  AV_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX, FLAGS},
    {NULL},
}

Definition at line 82 of file vf_lut.c.

enum AVPixelFormat yuv_pix_fmts[] = { YUV_FORMATS, AV_PIX_FMT_NONE }

static

Definition at line 121 of file vf_lut.c.

Referenced by config_props(), and query_formats().

enum AVPixelFormat rgb_pix_fmts[] = { RGB_FORMATS, AV_PIX_FMT_NONE }

static

Definition at line 122 of file vf_lut.c.

Referenced by config_props(), and query_formats().

enum AVPixelFormat all_pix_fmts[] = { RGB_FORMATS, YUV_FORMATS, AV_PIX_FMT_NONE }

static

Definition at line 123 of file vf_lut.c.

Referenced by query_formats().

double(* const funcs1[])(void *, double)

static

Initial value:

= {
    (void *)clip,
    (void *)compute_gammaval,
    NULL
}

Definition at line 162 of file vf_lut.c.

Referenced by av_expr_parse(), av_expr_parse_and_eval(), and config_props().

const char* const funcs1_names[]

static

Initial value:

= {
    "clip",
    "gammaval",
    NULL
}

Definition at line 168 of file vf_lut.c.

Referenced by config_props().

const AVFilterPad inputs[]

static

Initial value:

= {
    { .name            = "default",
      .type            = AVMEDIA_TYPE_VIDEO,
      .filter_frame    = filter_frame,
      .config_props    = config_props,
      .min_perms       = AV_PERM_READ, },
    { .name = NULL}
}

Definition at line 323 of file vf_lut.c.

const AVFilterPad outputs[]

static

Initial value:

= {
    { .name            = "default",
      .type            = AVMEDIA_TYPE_VIDEO, },
    { .name = NULL}
}

Definition at line 331 of file vf_lut.c.

Data Structures

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation