SkYUVMath.h File Reference

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Functions
void	SkColorMatrix_RGB2YUV (SkYUVColorSpace, float m[20])
void	SkColorMatrix_YUV2RGB (SkYUVColorSpace, float m[20])
void	SkColorMatrix_DumpYUVMatrixTables ()

Function Documentation

SkColorMatrix_DumpYUVMatrixTables()

void SkColorMatrix_DumpYUVMatrixTables

(

)

Definition at line 672 of file SkYUVMath.cpp.

                                         {
    for (int i = 0; i < kLastEnum_SkYUVColorSpace; ++i) {
        SkYUVColorSpace cs = static_cast<SkYUVColorSpace>(i);
        float m[20];
        make_rgb_to_yuv_matrix(m, cs);
        dump(m, cs, true);
        SkM44 m44, im44;
        colormatrix_to_matrix44(m, &m44);
        float im[20];
#ifdef SK_DEBUG
        // be sure our coversion between matrix44 and colormatrix is perfect
        matrix44_to_colormatrix(m44, im);
        SkASSERT(memcmp(m, im, sizeof(im)) == 0);
#endif
        SkAssertResult(m44.invert(&im44));
        matrix44_to_colormatrix(im44, im);
        dump(im, cs, false);
    }
}

SkColorMatrix_RGB2YUV()

void SkColorMatrix_RGB2YUV	(	SkYUVColorSpace	cs,
		float	m[20]
	)

Definition at line 389 of file SkYUVMath.cpp.

                                                            {
    if ((unsigned)cs < (unsigned)kIdentity_SkYUVColorSpace) {
        memcpy(m, rgb_to_yuv_array[(unsigned)cs], kSizeOfColorMatrix);
    } else {
        memset(m, 0, kSizeOfColorMatrix);
        m[0] = m[6] = m[12] = m[18] = 1;
    }
}

SkColorMatrix_YUV2RGB()

void SkColorMatrix_YUV2RGB	(	SkYUVColorSpace	cs,
		float	m[20]
	)

Definition at line 398 of file SkYUVMath.cpp.

                                                            {
    if ((unsigned)cs < (unsigned)kIdentity_SkYUVColorSpace) {
        memcpy(m, yuv_to_rgb_array[(unsigned)cs], kSizeOfColorMatrix);
    } else {
        memset(m, 0, kSizeOfColorMatrix);
        m[0] = m[6] = m[12] = m[18] = 1;
    }
}