Data Structures | Macros | Enumerations | Functions | Variables
vf_lut.c File Reference

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"
Include dependency graph for vf_lut.c:

Go to the source code of this file.

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_HSUB, VAR_VSUB, VAR_X, VAR_Y,
  VAR_N, VAR_POS, VAR_T, 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. More...
 
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. More...
 
static int config_props (AVFilterLink *inlink)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *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 A   3

Definition at line 77 of file vf_lut.c.

Referenced by config_props().

#define B   2

Definition at line 76 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), \
.priv_class = &name_ ## _class, \
\
.init = name_##_init, \
.uninit = uninit, \
.query_formats = query_formats, \
\
.inputs = inputs, \
.outputs = outputs, \
}
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: libavutil/internal.h:123
outputs
static const AVFilterPad outputs[]
Definition: vf_lut.c:334
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_lut.c:125
AVFilter
Filter definition.
Definition: avfilter.h:436
AVFilter::name
const char * name
filter name
Definition: avfilter.h:437
inputs
static const AVFilterPad inputs[]
Definition: vf_lut.c:326
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_lut.c:97

Definition at line 340 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 G   1

Definition at line 75 of file vf_lut.c.

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

Definition at line 79 of file vf_lut.c.

#define R   0

Definition at line 74 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
AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:70
AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:98
AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:99
AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:96
AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:97
AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:71

Definition at line 116 of file vf_lut.c.

#define U   1

Definition at line 72 of file vf_lut.c.

Referenced by config_props().

#define V   2

Definition at line 73 of file vf_lut.c.

Referenced by config_props().

#define Y   0

Definition at line 71 of file vf_lut.c.

Referenced by config_props().

#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
AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:73
AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:105
AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of PIX_FMT_YUV440P and setting color_range ...
Definition: pixfmt.h:104
AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV422P and setting color_...
Definition: pixfmt.h:81
AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:72
AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV420P and setting color_...
Definition: pixfmt.h:80
AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:74
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:68
AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV444P and setting color_...
Definition: pixfmt.h:82
AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:75
AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:103

Definition at line 109 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_HSUB 
VAR_VSUB 
VAR_X 
VAR_Y 
VAR_N 
VAR_POS 
VAR_T 
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 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,
AVFrame *  in 
)
static

Definition at line 256 of file vf_lut.c.

static int query_formats ( AVFilterContext *  ctx)
static

Definition at line 125 of file vf_lut.c.

static av_cold void uninit ( AVFilterContext *  ctx)
static

Definition at line 97 of file vf_lut.c.

Variable Documentation

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
}
NULL
NULL
Definition: eval.c:55
clip
static double clip(void *opaque, double val)
Clip value val in the minval - maxval range.
Definition: vf_lut.c:139
compute_gammaval
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 c...
Definition: vf_lut.c:152

Definition at line 162 of file vf_lut.c.

Referenced by config_props().

const char* const funcs1_names[]
static
Initial value:
= {
"clip",
"gammaval",
NULL
}
NULL
NULL
Definition: eval.c:55

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,
},
{ .name = NULL}
}
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_lut.c:256
NULL
NULL
Definition: eval.c:55
config_props
static int config_props(AVFilterLink *inlink)
Definition: vf_lut.c:174
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:143

Definition at line 326 of file vf_lut.c.

const AVOption options[]
static
Initial value:
= {
{ "c0", "set component #0 expression", OFFSET(comp_expr_str[0]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
{ "c1", "set component #1 expression", OFFSET(comp_expr_str[1]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
{ "c2", "set component #2 expression", OFFSET(comp_expr_str[2]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
{ "c3", "set component #3 expression", OFFSET(comp_expr_str[3]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
{ "y", "set Y expression", OFFSET(comp_expr_str[Y]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
{ "u", "set U expression", OFFSET(comp_expr_str[U]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
{ "v", "set V expression", OFFSET(comp_expr_str[V]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
{ "r", "set R expression", OFFSET(comp_expr_str[R]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
{ "g", "set G expression", OFFSET(comp_expr_str[G]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
{ "b", "set B expression", OFFSET(comp_expr_str[B]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
{ "a", "set A expression", OFFSET(comp_expr_str[A]), AV_OPT_TYPE_STRING, { .str = "val" }, .flags = FLAGS },
{ NULL },
}
G
#define G
Definition: vf_lut.c:75
A
#define A
Definition: vf_lut.c:77
R
#define R
Definition: vf_lut.c:74
AV_OPT_TYPE_STRING
Definition: opt.h:226
OFFSET
#define OFFSET(x)
Definition: vf_lut.c:79
U
#define U
Definition: vf_lut.c:72
NULL
NULL
Definition: eval.c:55
V
#define V
Definition: vf_lut.c:73
Y
#define Y
Definition: vf_lut.c:71
FLAGS
#define FLAGS
Definition: vf_lut.c:80
B
#define B
Definition: vf_lut.c:76

Definition at line 82 of file vf_lut.c.

const AVFilterPad outputs[]
static
Initial value:
= {
{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO, },
{ .name = NULL}
}
NULL
NULL
Definition: eval.c:55
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:143

Definition at line 334 of file vf_lut.c.

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().

const char* const var_names[]
static
Initial value:
= {
"w",
"h",
"val",
"maxval",
"minval",
"negval",
"clipval",
NULL
}
NULL
NULL
Definition: eval.c:55

Definition at line 37 of file vf_lut.c.

Referenced by config_props().

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().

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