vf_lut3d.c File Reference

3D Lookup table filter More...

#include <float.h>
#include "config_components.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/file_open.h"
#include "libavutil/intfloat.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "drawutils.h"
#include "filters.h"
#include "video.h"
#include "lut3d.h"

Go to the source code of this file.

Macros
#define	R   0
#define	G   1
#define	B   2
#define	A   3
#define	OFFSET(x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	TFLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
#define	COMMON_OPTIONS
#define	EXPONENT_MASK   0x7F800000
#define	MANTISSA_MASK   0x007FFFFF
#define	SIGN_MASK   0x80000000
#define	NEAR(x)
#define	PREV(x)
#define	NEXT(x)
#define	DEFINE_INTERP_FUNC_PLANAR(name, nbits, depth)
#define	DEFINE_INTERP_FUNC_PLANAR_FLOAT(name, depth)
#define	DEFINE_INTERP_FUNC(name, nbits)
#define	MAX_LINE_SIZE   512
#define	NEXT_LINE(loop_cond)
#define	NEXT_LINE_OR_GOTO(loop_cond, label)
#define	SET_COLOR(id)
#define	NEXT_FLOAT_OR_GOTO(value, label)

Functions
static float	sanitizef (float f)
static float	lerpf (float v0, float v1, float f)
static struct rgbvec	lerp (const struct rgbvec *v0, const struct rgbvec *v1, float f)
static struct rgbvec	interp_nearest (const LUT3DContext *lut3d, const struct rgbvec *s)
	Get the nearest defined point.
static struct rgbvec	interp_trilinear (const LUT3DContext *lut3d, const struct rgbvec *s)
	Interpolate using the 8 vertices of a cube.
static struct rgbvec	interp_pyramid (const LUT3DContext *lut3d, const struct rgbvec *s)
static struct rgbvec	interp_prism (const LUT3DContext *lut3d, const struct rgbvec *s)
static struct rgbvec	interp_tetrahedral (const LUT3DContext *lut3d, const struct rgbvec *s)
	Tetrahedral interpolation.
static float	prelut_interp_1d_linear (const Lut3DPreLut *prelut, int idx, const float s)
static struct rgbvec	apply_prelut (const Lut3DPreLut *prelut, const struct rgbvec *s)
static int	skip_line (const char *p)
static char *	fget_next_word (char *dst, int max, FILE *f)
static int	allocate_3dlut (AVFilterContext *ctx, int lutsize, int prelut)
static int	parse_dat (AVFilterContext *ctx, FILE *f)
static int	parse_cube (AVFilterContext *ctx, FILE *f)
static int	parse_3dl (AVFilterContext *ctx, FILE *f)
static int	parse_m3d (AVFilterContext *ctx, FILE *f)
static int	nearest_sample_index (float *data, float x, int low, int hi)
static int	parse_cinespace (AVFilterContext *ctx, FILE *f)
static int	set_identity_matrix (AVFilterContext *ctx, int size)

Variables
static enum AVPixelFormat	pix_fmts []

Detailed Description

3D Lookup table filter

Definition in file vf_lut3d.c.

Macro Definition Documentation

R

#define R   0

Definition at line 42 of file vf_lut3d.c.

G

#define G   1

Definition at line 43 of file vf_lut3d.c.

B

#define B   2

Definition at line 44 of file vf_lut3d.c.

A

#define A   3

Definition at line 45 of file vf_lut3d.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(LUT3DContext, x)

Definition at line 47 of file vf_lut3d.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 48 of file vf_lut3d.c.

TFLAGS

#define TFLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 49 of file vf_lut3d.c.

COMMON_OPTIONS

#define COMMON_OPTIONS

Value:

    { "interp", "select interpolation mode", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERPOLATE_TETRAHEDRAL}, 0, NB_INTERP_MODE-1, TFLAGS, .unit = "interp_mode" }, \
        { "nearest",     "use values from the nearest defined points",            0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_NEAREST},     0, 0, TFLAGS, .unit = "interp_mode" }, \
        { "trilinear",   "interpolate values using the 8 points defining a cube", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_TRILINEAR},   0, 0, TFLAGS, .unit = "interp_mode" }, \
        { "tetrahedral", "interpolate values using a tetrahedron",                0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_TETRAHEDRAL}, 0, 0, TFLAGS, .unit = "interp_mode" }, \
        { "pyramid",     "interpolate values using a pyramid",                    0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_PYRAMID},     0, 0, TFLAGS, .unit = "interp_mode" }, \
        { "prism",       "interpolate values using a prism",                      0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_PRISM},       0, 0, TFLAGS, .unit = "interp_mode" }, \
    { NULL }

Definition at line 50 of file vf_lut3d.c.

EXPONENT_MASK

#define EXPONENT_MASK   0x7F800000

Definition at line 59 of file vf_lut3d.c.

Referenced by sanitizef().

MANTISSA_MASK

#define MANTISSA_MASK   0x007FFFFF

Definition at line 60 of file vf_lut3d.c.

Referenced by sanitizef().

SIGN_MASK

#define SIGN_MASK   0x80000000

Definition at line 61 of file vf_lut3d.c.

Referenced by sanitizef().

NEAR

#define NEAR

(

x

)

Value:

((int)((x) + .5))

Definition at line 96 of file vf_lut3d.c.

Referenced by interp_nearest().

PREV

#define PREV

(

x

)

Value:

((int)(x))

Definition at line 97 of file vf_lut3d.c.

Referenced by config_input(), denoise(), interp_prism(), interp_pyramid(), interp_tetrahedral(), interp_trilinear(), prelut_interp_1d_linear(), and uninit().

NEXT

#define NEXT

(

x

)

Value:

(FFMIN((int)(x) + 1, lut3d->lutsize - 1))

Definition at line 98 of file vf_lut3d.c.

Referenced by config_input(), denoise(), interp_prism(), interp_pyramid(), interp_tetrahedral(), interp_trilinear(), and uninit().

DEFINE_INTERP_FUNC_PLANAR

#define DEFINE_INTERP_FUNC_PLANAR	(		name,
			nbits,
			depth )

Definition at line 321 of file vf_lut3d.c.

DEFINE_INTERP_FUNC_PLANAR_FLOAT

#define DEFINE_INTERP_FUNC_PLANAR_FLOAT	(		name,
			depth )

Definition at line 419 of file vf_lut3d.c.

DEFINE_INTERP_FUNC

#define DEFINE_INTERP_FUNC	(		name,
			nbits )

Definition at line 486 of file vf_lut3d.c.

MAX_LINE_SIZE

#define MAX_LINE_SIZE   512

Definition at line 547 of file vf_lut3d.c.

Referenced by check_draw_edges(), check_rgb24toyv12(), check_rgb_to_uv(), check_rgb_to_y(), check_rgba_to_a(), check_semiplanar(), check_xyz12Torgb48le(), check_yuv2packed1(), check_yuv2packed2(), check_yuv2packedX(), check_yuv2rgb(), checkasm_check_sw_rgb(), parse_3dl(), parse_cinespace(), parse_cube(), parse_dat(), and parse_m3d().

NEXT_LINE

#define NEXT_LINE

(

loop_cond

)

Value:

    do {                           \
    if (!fgets(line, sizeof(line), f)) {                    \
        av_log(ctx, AV_LOG_ERROR, "Unexpected EOF\n");      \
        return AVERROR_INVALIDDATA;                         \
    }                                                       \
} while (loop_cond)

Definition at line 590 of file vf_lut3d.c.

Referenced by parse_3dl(), parse_cube(), parse_dat(), and parse_m3d().

NEXT_LINE_OR_GOTO

#define NEXT_LINE_OR_GOTO	(		loop_cond,
			label )

Value:

    do {            \
    if (!fgets(line, sizeof(line), f)) {                    \
        av_log(ctx, AV_LOG_ERROR, "Unexpected EOF\n");      \
        ret = AVERROR_INVALIDDATA;                          \
        goto label;                                         \
    }                                                       \
} while (loop_cond)

Definition at line 597 of file vf_lut3d.c.

Referenced by parse_cinespace().

SET_COLOR

#define SET_COLOR

(

id

)

Value:

    do {                  \
    while (av_isspace(*p))                  \
        p++;                                \
    switch (*p) {                           \
    case 'r': rgb_map[id] = 0; break;       \
    case 'g': rgb_map[id] = 1; break;       \
    case 'b': rgb_map[id] = 2; break;       \
    }                                       \
    while (*p && !av_isspace(*p))           \
        p++;                                \
} while (0)

Referenced by parse_m3d().

NEXT_FLOAT_OR_GOTO

#define NEXT_FLOAT_OR_GOTO	(		value,
			label )

Value:

    if (!fget_next_word(line, sizeof(line) ,f)) {           \
        ret = AVERROR_INVALIDDATA;                          \
        goto label;                                         \
    }                                                       \
    if (av_sscanf(line, "%f", &value) != 1) {               \
        ret = AVERROR_INVALIDDATA;                          \
        goto label;                                         \
    }

Definition at line 865 of file vf_lut3d.c.

Referenced by parse_cinespace().

Function Documentation

sanitizef()

static float sanitizef ( float f )

inlinestatic

Definition at line 63 of file vf_lut3d.c.

Referenced by parse_cinespace().

lerpf()

static float lerpf ( float v0, float v1, float f )

inlinestatic

Definition at line 83 of file vf_lut3d.c.

Referenced by lerp(), parse_cinespace(), and prelut_interp_1d_linear().

lerp()

static struct rgbvec lerp ( const struct rgbvec * v0, const struct rgbvec * v1, float f )

inlinestatic

Definition at line 88 of file vf_lut3d.c.

Referenced by interp_trilinear().

interp_nearest()

static struct rgbvec interp_nearest ( const LUT3DContext * lut3d, const struct rgbvec * s )

inlinestatic

Get the nearest defined point.

Definition at line 103 of file vf_lut3d.c.

Referenced by interp_nearest().

interp_trilinear()

static struct rgbvec interp_trilinear ( const LUT3DContext * lut3d, const struct rgbvec * s )

inlinestatic

Interpolate using the 8 vertices of a cube.

See also

https://en.wikipedia.org/wiki/Trilinear_interpolation

Definition at line 113 of file vf_lut3d.c.

Referenced by interp_trilinear().

interp_pyramid()

static struct rgbvec interp_pyramid ( const LUT3DContext * lut3d, const struct rgbvec * s )

inlinestatic

Definition at line 139 of file vf_lut3d.c.

Referenced by interp_pyramid().

interp_prism()

static struct rgbvec interp_prism ( const LUT3DContext * lut3d, const struct rgbvec * s )

inlinestatic

Definition at line 189 of file vf_lut3d.c.

Referenced by interp_prism().

interp_tetrahedral()

static struct rgbvec interp_tetrahedral ( const LUT3DContext * lut3d, const struct rgbvec * s )

inlinestatic

Tetrahedral interpolation.

Based on code found in Truelight Software Library paper.

See also

http://www.filmlight.ltd.uk/pdf/whitepapers/FL-TL-TN-0057-SoftwareLib.pdf

Definition at line 238 of file vf_lut3d.c.

Referenced by interp_tetrahedral().

prelut_interp_1d_linear()

static float prelut_interp_1d_linear ( const Lut3DPreLut * prelut, int idx, const float s )

inlinestatic

Definition at line 293 of file vf_lut3d.c.

Referenced by apply_prelut().

apply_prelut()

static struct rgbvec apply_prelut ( const Lut3DPreLut * prelut, const struct rgbvec * s )

inlinestatic

Definition at line 307 of file vf_lut3d.c.

Referenced by apply_prelut().

skip_line()

static int skip_line ( const char * p )

static

Definition at line 549 of file vf_lut3d.c.

Referenced by parse_3dl(), parse_cinespace(), parse_cube(), and parse_dat().

fget_next_word()

static char * fget_next_word ( char * dst, int max, FILE * f )

static

Definition at line 556 of file vf_lut3d.c.

allocate_3dlut()

static int allocate_3dlut ( AVFilterContext * ctx, int lutsize, int prelut )

static

Definition at line 605 of file vf_lut3d.c.

Referenced by parse_3dl(), parse_cinespace(), parse_cube(), parse_dat(), parse_m3d(), and set_identity_matrix().

parse_dat()

static int parse_dat ( AVFilterContext * ctx, FILE * f )

static

Definition at line 640 of file vf_lut3d.c.

parse_cube()

static int parse_cube ( AVFilterContext * ctx, FILE * f )

static

Definition at line 675 of file vf_lut3d.c.

parse_3dl()

static int parse_3dl ( AVFilterContext * ctx, FILE * f )

static

Definition at line 733 of file vf_lut3d.c.

parse_m3d()

static int parse_m3d ( AVFilterContext * ctx, FILE * f )

static

Definition at line 768 of file vf_lut3d.c.

nearest_sample_index()

static int nearest_sample_index ( float * data, float x, int low, int hi )

static

Definition at line 837 of file vf_lut3d.c.

Referenced by parse_cinespace().

parse_cinespace()

static int parse_cinespace ( AVFilterContext * ctx, FILE * f )

static

Definition at line 875 of file vf_lut3d.c.

set_identity_matrix()

static int set_identity_matrix ( AVFilterContext * ctx, int size )

static

Definition at line 1072 of file vf_lut3d.c.

Variable Documentation

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_RGB24,  AV_PIX_FMT_BGR24,
    AV_PIX_FMT_RGBA,   AV_PIX_FMT_BGRA,
    AV_PIX_FMT_ARGB,   AV_PIX_FMT_ABGR,
    AV_PIX_FMT_0RGB,   AV_PIX_FMT_0BGR,
    AV_PIX_FMT_RGB0,   AV_PIX_FMT_BGR0,
    AV_PIX_FMT_RGB48,  AV_PIX_FMT_BGR48,
    AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,
    AV_PIX_FMT_GBRP,   AV_PIX_FMT_GBRAP,
    AV_PIX_FMT_GBRP9,
    AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
    AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12,
    AV_PIX_FMT_GBRP14,
    AV_PIX_FMT_GBRP16,  AV_PIX_FMT_GBRAP16,
    AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
    AV_PIX_FMT_NONE
}

Definition at line 1097 of file vf_lut3d.c.