iplab2rgb.cc: speedup for copyAndClamp(), #5964
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@@ -570,9 +570,20 @@ public:
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*/
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static void xyz2rgb (float x, float y, float z, float &r, float &g, float &b, const double rgb_xyz[3][3]);
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static void xyz2r (float x, float y, float z, float &r, const double rgb_xyz[3][3]);
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static void xyz2rgb (float x, float y, float z, float &r, float &g, float &b, const float rgb_xyz[3][3]);
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static inline void xyz2rgb (float x, float y, float z, float &r, float &g, float &b, const float rgb_xyz[3][3])
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{
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r = ((rgb_xyz[0][0] * x + rgb_xyz[0][1] * y + rgb_xyz[0][2] * z)) ;
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g = ((rgb_xyz[1][0] * x + rgb_xyz[1][1] * y + rgb_xyz[1][2] * z)) ;
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b = ((rgb_xyz[2][0] * x + rgb_xyz[2][1] * y + rgb_xyz[2][2] * z)) ;
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}
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#ifdef __SSE2__
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static void xyz2rgb (vfloat x, vfloat y, vfloat z, vfloat &r, vfloat &g, vfloat &b, const vfloat rgb_xyz[3][3]);
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static inline void xyz2rgb (vfloat x, vfloat y, vfloat z, vfloat &r, vfloat &g, vfloat &b, const vfloat rgb_xyz[3][3])
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{
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r = ((rgb_xyz[0][0] * x + rgb_xyz[0][1] * y + rgb_xyz[0][2] * z)) ;
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g = ((rgb_xyz[1][0] * x + rgb_xyz[1][1] * y + rgb_xyz[1][2] * z)) ;
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b = ((rgb_xyz[2][0] * x + rgb_xyz[2][1] * y + rgb_xyz[2][2] * z)) ;
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}
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#endif
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@@ -603,12 +614,40 @@ public:
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* @param y Y coordinate [0 ; 65535] ; can be negative! (return value)
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* @param z Z coordinate [0 ; 65535] ; can be negative! (return value)
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*/
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static void Lab2XYZ(float L, float a, float b, float &x, float &y, float &z);
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static inline void Lab2XYZ(float L, float a, float b, float &x, float &y, float &z)
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{
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float LL = L / 327.68f;
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float aa = a / 327.68f;
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float bb = b / 327.68f;
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float fy = (c1By116 * LL) + c16By116; // (L+16)/116
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float fx = (0.002f * aa) + fy;
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float fz = fy - (0.005f * bb);
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x = 65535.f * f2xyz(fx) * D50x;
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z = 65535.f * f2xyz(fz) * D50z;
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y = (LL > epskapf) ? 65535.f * fy * fy * fy : 65535.f * LL / kappaf;
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}
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static void L2XYZ(float L, float &x, float &y, float &z);
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static float L2Y(float L);
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#ifdef __SSE2__
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static void Lab2XYZ(vfloat L, vfloat a, vfloat b, vfloat &x, vfloat &y, vfloat &z);
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static inline void Lab2XYZ(vfloat L, vfloat a, vfloat b, vfloat &x, vfloat &y, vfloat &z)
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{
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vfloat c327d68 = F2V(327.68f);
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L /= c327d68;
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a /= c327d68;
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b /= c327d68;
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vfloat fy = F2V(c1By116) * L + F2V(c16By116);
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vfloat fx = F2V(0.002f) * a + fy;
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vfloat fz = fy - (F2V(0.005f) * b);
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vfloat c65535 = F2V(65535.f);
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x = c65535 * f2xyz(fx) * F2V(D50x);
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z = c65535 * f2xyz(fz) * F2V(D50z);
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vfloat res1 = fy * fy * fy;
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vfloat res2 = L / F2V(kappa);
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y = vself(vmaskf_gt(L, F2V(epskap)), res1, res2);
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y *= c65535;
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}
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#endif // __SSE2__
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/**
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