SkColorMatrix.cpp File Reference

#include "include/effects/SkColorMatrix.h"
#include "src/core/SkYUVMath.h"

Go to the source code of this file.

Enumerations
enum	{   kR_Scale = 0 , kG_Scale = 6 , kB_Scale = 12 , kA_Scale = 18 ,   kR_Trans = 4 , kG_Trans = 9 , kB_Trans = 14 , kA_Trans = 19 }

Functions
static void	set_concat (float result[20], const float outer[20], const float inner[20])
static void	setrow (float row[], float r, float g, float b)

Variables
static const float	kHueR = 0.213f
static const float	kHueG = 0.715f
static const float	kHueB = 0.072f

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
kR_Scale
kG_Scale
kB_Scale
kA_Scale
kR_Trans
kG_Trans
kB_Trans
kA_Trans

Definition at line 25 of file SkColorMatrix.cpp.

     {
    kR_Scale = 0,
    kG_Scale = 6,
    kB_Scale = 12,
    kA_Scale = 18,
 
    kR_Trans = 4,
    kG_Trans = 9,
    kB_Trans = 14,
    kA_Trans = 19,
};

Function Documentation

set_concat()

static void set_concat ( float  result[20], const float  outer[20], const float  inner[20]  )

static

Definition at line 37 of file SkColorMatrix.cpp.

                                                                                       {
    float    tmp[20];
    float*   target;
 
    if (outer == result || inner == result) {
        target = tmp;   // will memcpy answer when we're done into result
    } else {
        target = result;
    }
 
    int index = 0;
    for (int j = 0; j < 20; j += 5) {
        for (int i = 0; i < 4; i++) {
            target[index++] =   outer[j + 0] * inner[i + 0] +
                                outer[j + 1] * inner[i + 5] +
                                outer[j + 2] * inner[i + 10] +
                                outer[j + 3] * inner[i + 15];
        }
        target[index++] =   outer[j + 0] * inner[4] +
                            outer[j + 1] * inner[9] +
                            outer[j + 2] * inner[14] +
                            outer[j + 3] * inner[19] +
                            outer[j + 4];
    }
 
    if (target != result) {
        std::copy_n(target, 20, result);
    }
}

setrow()

static void setrow ( float  row[], float  r, float  g, float  b  )

static

Definition at line 95 of file SkColorMatrix.cpp.

                                                           {
    row[0] = r;
    row[1] = g;
    row[2] = b;
}

Variable Documentation

kHueB

const float kHueB = 0.072f

static

Definition at line 103 of file SkColorMatrix.cpp.

kHueG

const float kHueG = 0.715f

static

Definition at line 102 of file SkColorMatrix.cpp.

kHueR

const float kHueR = 0.213f

static

Definition at line 101 of file SkColorMatrix.cpp.