Libav
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/attributes.h"
#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

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_VIDEO_PARAM
 
#define YUV_FORMATS
 
#define RGB_FORMATS
 
#define DEFINE_LUT_FILTER(name_, description_, init_, options)
 

Enumerations

enum  var_name {
  VAR_E, VAR_INTERLACED, VAR_N, VAR_PHI,
  VAR_PI, VAR_PREV_INPTS, VAR_PREV_OUTPTS, VAR_PTS,
  VAR_STARTPTS, VAR_TB, VAR_RTCTIME, VAR_RTCSTART,
  VAR_S, VAR_SR, VAR_VARS_NB, VAR_E,
  VAR_PHI, VAR_PI, VAR_AVTB, VAR_INTB,
  VAR_SR, VAR_VARS_NB, VAR_PI, VAR_PHI,
  VAR_E, VAR_W, VAR_H, VAR_A,
  VAR_DAR, VAR_SAR, VAR_HSUB, VAR_VSUB,
  VARS_NB, VAR_W, VAR_H, VAR_CW,
  VAR_CH, VAR_HSUB, VAR_VSUB, VARS_NB,
  VAR_E, VAR_PHI, VAR_PI, 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_N, VAR_T, VAR_VARS_NB,
  VAR_E, VAR_PHI, VAR_PI, VAR_MAIN_W,
  VAR_MW, VAR_MAIN_H, VAR_MH, VAR_TEXT_W,
  VAR_TW, VAR_TEXT_H, VAR_TH, VAR_X,
  VAR_Y, VAR_N, VAR_T, VAR_VARS_NB,
  VAR_E, VAR_PHI, VAR_PI, VAR_W,
  VAR_H, VAR_VAL, VAR_MAXVAL, VAR_MINVAL,
  VAR_NEGVAL, VAR_CLIPVAL, VAR_VARS_NB, VAR_E,
  VAR_PHI, VAR_PI, VAR_MAIN_W, VAR_MW,
  VAR_MAIN_H, VAR_MH, VAR_OVERLAY_W, VAR_OW,
  VAR_OVERLAY_H, VAR_OH, VAR_VARS_NB, VAR_PI,
  VAR_PHI, VAR_E, 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_HSUB, VAR_VSUB, VARS_NB,
  VAR_PI, VAR_PHI, VAR_E, VAR_IN_W,
  VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W,
  VAR_OW, VAR_OUT_H, VAR_OH, VAR_A,
  VAR_DAR, VAR_SAR, VAR_HSUB, VAR_VSUB,
  VARS_NB, VAR_E, VAR_PHI, VAR_PI,
  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_N, VAR_SELECTED_N, VAR_PREV_SELECTED_N,
  VAR_KEY, VAR_VARS_NB, VAR_E, VAR_PHI,
  VAR_PI, VAR_AVTB, VAR_VARS_NB
}
 

Functions

static av_cold int init (AVFilterContext *ctx)
 
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 lut_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 79 of file vf_lut.c.

Referenced by config_props().

#define U   1

Definition at line 80 of file vf_lut.c.

Referenced by config_props().

#define V   2

Definition at line 81 of file vf_lut.c.

Referenced by config_props().

#define R   0

Definition at line 82 of file vf_lut.c.

Referenced by config_props().

#define G   1

Definition at line 83 of file vf_lut.c.

Referenced by config_props().

#define B   2

Definition at line 84 of file vf_lut.c.

Referenced by config_props().

#define A   3

Definition at line 85 of file vf_lut.c.

Referenced by config_props().

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

Definition at line 87 of file vf_lut.c.

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 88 of file vf_lut.c.

#define YUV_FORMATS
Value:
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:70
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:104
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of PIX_FMT_YUV440P and setting color_range ...
Definition: pixfmt.h:103
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV422P and setting color_...
Definition: pixfmt.h:78
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:69
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV420P and setting color_...
Definition: pixfmt.h:77
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:71
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:65
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV444P and setting color_...
Definition: pixfmt.h:79
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:72
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:102

Definition at line 131 of file vf_lut.c.

#define RGB_FORMATS
Value:
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:67
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:97
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:98
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:95
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:96
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:68

Definition at line 138 of file vf_lut.c.

#define DEFINE_LUT_FILTER (   name_,
  description_,
  init_,
  options 
)
Value:
static const AVClass name_ ## _class = { \
.class_name = #name_, \
.item_name = av_default_item_name, \
.option = options, \
.version = LIBAVUTIL_VERSION_INT, \
}; \
AVFilter ff_vf_##name_ = { \
.name = #name_, \
.description = NULL_IF_CONFIG_SMALL(description_), \
.priv_size = sizeof(LutContext), \
.priv_class = &name_ ## _class, \
\
.init = init_, \
.uninit = uninit, \
\
.inputs = inputs, \
}
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:38
const OptionDef options[]
Definition: avconv_opt.c:2187
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:145
static av_cold int init(AVFilterContext *ctx)
Definition: vf_lut.c:105
LIBAVUTIL_VERSION_INT
Definition: eval.c:55
static const AVFilterPad outputs[]
Definition: vf_lut.c:349
av_default_item_name
Definition: dnxhdenc.c:52
static int query_formats(AVFilterContext *ctx)
Definition: vf_lut.c:147
Describe the class of an AVClass context structure.
Definition: log.h:33
static const AVFilterPad inputs[]
Definition: vf_lut.c:341
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_lut.c:119

Definition at line 354 of file vf_lut.c.

Enumeration Type Documentation

enum var_name
Enumerator
VAR_E 
VAR_INTERLACED 
VAR_N 
VAR_PHI 
VAR_PI 
VAR_PREV_INPTS 
VAR_PREV_OUTPTS 
VAR_PTS 
VAR_STARTPTS 
VAR_TB 
VAR_RTCTIME 
VAR_RTCSTART 
VAR_S 
VAR_SR 
VAR_VARS_NB 
VAR_E 
VAR_PHI 
VAR_PI 
VAR_AVTB 
VAR_INTB 
VAR_SR 
VAR_VARS_NB 
VAR_PI 
VAR_PHI 
VAR_E 
VAR_W 
VAR_H 
VAR_A 
VAR_DAR 
VAR_SAR 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_W 
VAR_H 
VAR_CW 
VAR_CH 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_E 
VAR_PHI 
VAR_PI 
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_N 
VAR_T 
VAR_VARS_NB 
VAR_E 
VAR_PHI 
VAR_PI 
VAR_MAIN_W 
VAR_MW 
VAR_MAIN_H 
VAR_MH 
VAR_TEXT_W 
VAR_TW 
VAR_TEXT_H 
VAR_TH 
VAR_X 
VAR_Y 
VAR_N 
VAR_T 
VAR_VARS_NB 
VAR_E 
VAR_PHI 
VAR_PI 
VAR_W 
VAR_H 
VAR_VAL 
VAR_MAXVAL 
VAR_MINVAL 
VAR_NEGVAL 
VAR_CLIPVAL 
VAR_VARS_NB 
VAR_E 
VAR_PHI 
VAR_PI 
VAR_MAIN_W 
VAR_MW 
VAR_MAIN_H 
VAR_MH 
VAR_OVERLAY_W 
VAR_OW 
VAR_OVERLAY_H 
VAR_OH 
VAR_VARS_NB 
VAR_PI 
VAR_PHI 
VAR_E 
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_HSUB 
VAR_VSUB 
VARS_NB 
VAR_PI 
VAR_PHI 
VAR_E 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_A 
VAR_DAR 
VAR_SAR 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_E 
VAR_PHI 
VAR_PI 
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_N 
VAR_SELECTED_N 
VAR_PREV_SELECTED_N 
VAR_KEY 
VAR_VARS_NB 
VAR_E 
VAR_PHI 
VAR_PI 
VAR_AVTB 
VAR_VARS_NB 

Definition at line 52 of file vf_lut.c.

Function Documentation

static av_cold int init ( AVFilterContext ctx)
static

Definition at line 105 of file vf_lut.c.

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 119 of file vf_lut.c.

static int query_formats ( AVFilterContext ctx)
static

Definition at line 147 of file vf_lut.c.

static double clip ( void opaque,
double  val 
)
static

Clip value val in the minval - maxval range.

Definition at line 162 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 175 of file vf_lut.c.

static int config_props ( AVFilterLink inlink)
static

Definition at line 197 of file vf_lut.c.

static int filter_frame ( AVFilterLink inlink,
AVFrame in 
)
static

Definition at line 286 of file vf_lut.c.

Variable Documentation

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

Definition at line 38 of file vf_lut.c.

Referenced by config_props().

const AVOption lut_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 },
}
#define G
Definition: vf_lut.c:83
#define A
Definition: vf_lut.c:85
#define R
Definition: vf_lut.c:82
#define OFFSET(x)
Definition: vf_lut.c:87
#define U
Definition: vf_lut.c:80
NULL
Definition: eval.c:55
#define V
Definition: vf_lut.c:81
#define Y
Definition: vf_lut.c:79
#define FLAGS
Definition: vf_lut.c:88
#define B
Definition: vf_lut.c:84

Definition at line 90 of file vf_lut.c.

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

Definition at line 143 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 144 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 145 of file vf_lut.c.

Referenced by query_formats().

double(* const funcs1[])(void *, double)
static
Initial value:
= {
}
NULL
Definition: eval.c:55
static double clip(void *opaque, double val)
Clip value val in the minval - maxval range.
Definition: vf_lut.c:162
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:175

Definition at line 185 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: eval.c:55

Definition at line 191 of file vf_lut.c.

Referenced by config_props().

const AVFilterPad inputs[]
static
Initial value:
= {
{ .name = "default",
.filter_frame = filter_frame,
.config_props = config_props,
},
{ .name = NULL}
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_lut.c:286
NULL
Definition: eval.c:55
static int config_props(AVFilterLink *inlink)
Definition: vf_lut.c:197

Definition at line 341 of file vf_lut.c.

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

Definition at line 349 of file vf_lut.c.