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restored ocl_cvtcolor.cl

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pull/1880/head
Ilya Lavrenov 11 years ago
parent d2e1318341
commit 41d046a2db
3 changed files with 664 additions and 5 deletions
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  1. 3
      modules/core/src/ocl.cpp
  2. 5
      modules/imgproc/src/color.cpp
  3. 661
      modules/ocl/src/opencl/cvt_color.cl

3
modules/core/src/ocl.cpp
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@ -41,7 +41,6 @@
#include "precomp.hpp"
#include <map>
#include <iostream>
/*
Part of the file is an extract from the standard OpenCL headers from Khronos site.
@ -2354,7 +2353,7 @@ struct Program::Impl
retval = clBuildProgram(handle, n,
(const cl_device_id*)deviceList,
buildflags.c_str(), 0, 0);
if( retval < 0 /*== CL_BUILD_PROGRAM_FAILURE*/ )
if( retval == CL_BUILD_PROGRAM_FAILURE )
{
char buf[1<<16];
size_t retsz = 0;

5
modules/imgproc/src/color.cpp
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@ -92,7 +92,6 @@
#include "precomp.hpp"
#include "opencl_kernels.hpp"
#include <limits>
#include <iostream>
#define CV_DESCALE(x,n) (((x) + (1 << ((n)-1))) >> (n))
@ -3045,8 +3044,8 @@ void cv::cvtColor( InputArray _src, OutputArray _dst, int code, int dcn )
int stype = _src.type();
int scn = CV_MAT_CN(stype), depth = CV_MAT_DEPTH(stype), bidx;
if( use_opencl /*&& ocl_cvtColor(_src, _dst, code, dcn)*/ )
return (void)ocl_cvtColor(_src, _dst, code, dcn);
if( use_opencl && ocl_cvtColor(_src, _dst, code, dcn) )
return;
Mat src = _src.getMat(), dst;
Size sz = src.size();

661
modules/ocl/src/opencl/cvt_color.cl
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@ -91,8 +91,669 @@ enum
BLOCK_SIZE = 256
};
///////////////////////////////////// RGB <-> GRAY //////////////////////////////////////
__kernel void RGB2Gray(int cols, int rows, int src_step, int dst_step,
int bidx, __global const DATA_TYPE* src, __global DATA_TYPE* dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
int src_idx = mad24(y, src_step, src_offset + (x << 2));
int dst_idx = mad24(y, dst_step, dst_offset + x);
#ifdef DEPTH_5
dst[dst_idx] = src[src_idx + bidx] * 0.114f + src[src_idx + 1] * 0.587f + src[src_idx + (bidx^2)] * 0.299f;
#else
dst[dst_idx] = (DATA_TYPE)CV_DESCALE((src[src_idx + bidx] * B2Y + src[src_idx + 1] * G2Y + src[src_idx + (bidx^2)] * R2Y), yuv_shift);
#endif
}
}
__kernel void Gray2RGB(int cols, int rows, int src_step, int dst_step, int bidx,
__global const DATA_TYPE* src, __global DATA_TYPE* dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + (x << 2));
DATA_TYPE val = src[src_idx];
dst[dst_idx] = val;
dst[dst_idx + 1] = val;
dst[dst_idx + 2] = val;
#if dcn == 4
dst[dst_idx + 3] = MAX_NUM;
#endif
}
}
///////////////////////////////////// RGB <-> YUV //////////////////////////////////////
__constant float c_RGB2YUVCoeffs_f[5] = { 0.114f, 0.587f, 0.299f, 0.492f, 0.877f };
__constant int c_RGB2YUVCoeffs_i[5] = { B2Y, G2Y, R2Y, 8061, 14369 };
__kernel void RGB2YUV(int cols, int rows, int src_step, int dst_step,
int bidx, __global const DATA_TYPE* src, __global DATA_TYPE* dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
x <<= 2;
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
DATA_TYPE rgb[] = { src[src_idx], src[src_idx + 1], src[src_idx + 2] };
#ifdef DEPTH_5
__constant float * coeffs = c_RGB2YUVCoeffs_f;
DATA_TYPE Y = rgb[0] * coeffs[bidx^2] + rgb[1] * coeffs[1] + rgb[2] * coeffs[bidx];
DATA_TYPE Cr = (rgb[bidx^2] - Y) * coeffs[3] + HALF_MAX;
DATA_TYPE Cb = (rgb[bidx] - Y) * coeffs[4] + HALF_MAX;
#else
__constant int * coeffs = c_RGB2YUVCoeffs_i;
int delta = HALF_MAX * (1 << yuv_shift);
int Y = CV_DESCALE(rgb[0] * coeffs[bidx^2] + rgb[1] * coeffs[1] + rgb[2] * coeffs[bidx], yuv_shift);
int Cr = CV_DESCALE((rgb[bidx^2] - Y) * coeffs[3] + delta, yuv_shift);
int Cb = CV_DESCALE((rgb[bidx] - Y) * coeffs[4] + delta, yuv_shift);
#endif
dst[dst_idx] = SAT_CAST( Y );
dst[dst_idx + 1] = SAT_CAST( Cr );
dst[dst_idx + 2] = SAT_CAST( Cb );
}
}
__constant float c_YUV2RGBCoeffs_f[5] = { 2.032f, -0.395f, -0.581f, 1.140f };
__constant int c_YUV2RGBCoeffs_i[5] = { 33292, -6472, -9519, 18678 };
__kernel void YUV2RGB(int cols, int rows, int src_step, int dst_step,
int bidx, __global const DATA_TYPE* src, __global DATA_TYPE* dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
x <<= 2;
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
DATA_TYPE yuv[] = { src[src_idx], src[src_idx + 1], src[src_idx + 2] };
#ifdef DEPTH_5
__constant float * coeffs = c_YUV2RGBCoeffs_f;
float b = yuv[0] + (yuv[2] - HALF_MAX) * coeffs[3];
float g = yuv[0] + (yuv[2] - HALF_MAX) * coeffs[2] + (yuv[1] - HALF_MAX) * coeffs[1];
float r = yuv[0] + (yuv[1] - HALF_MAX) * coeffs[0];
#else
__constant int * coeffs = c_YUV2RGBCoeffs_i;
int b = yuv[0] + CV_DESCALE((yuv[2] - HALF_MAX) * coeffs[3], yuv_shift);
int g = yuv[0] + CV_DESCALE((yuv[2] - HALF_MAX) * coeffs[2] + (yuv[1] - HALF_MAX) * coeffs[1], yuv_shift);
int r = yuv[0] + CV_DESCALE((yuv[1] - HALF_MAX) * coeffs[0], yuv_shift);
#endif
dst[dst_idx + bidx] = SAT_CAST( b );
dst[dst_idx + 1] = SAT_CAST( g );
dst[dst_idx + (bidx^2)] = SAT_CAST( r );
#if dcn == 4
dst[dst_idx + 3] = MAX_NUM;
#endif
}
}
__constant int ITUR_BT_601_CY = 1220542;
__constant int ITUR_BT_601_CUB = 2116026;
__constant int ITUR_BT_601_CUG = 409993;
__constant int ITUR_BT_601_CVG = 852492;
__constant int ITUR_BT_601_CVR = 1673527;
__constant int ITUR_BT_601_SHIFT = 20;
__kernel void YUV2RGBA_NV12(int cols, int rows, int src_step, int dst_step,
int bidx, __global const uchar* src, __global uchar* dst,
int src_offset, int dst_offset)
{
const int x = get_global_id(0);
const int y = get_global_id(1);
if (y < rows / 2 && x < cols / 2 )
{
__global const uchar* ysrc = src + mad24(y << 1, src_step, (x << 1) + src_offset);
__global const uchar* usrc = src + mad24(rows + y, src_step, (x << 1) + src_offset);
__global uchar* dst1 = dst + mad24(y << 1, dst_step, (x << 3) + dst_offset);
__global uchar* dst2 = dst + mad24((y << 1) + 1, dst_step, (x << 3) + dst_offset);
int Y1 = ysrc[0];
int Y2 = ysrc[1];
int Y3 = ysrc[src_step];
int Y4 = ysrc[src_step + 1];
int U = usrc[0] - 128;
int V = usrc[1] - 128;
int ruv = (1 << (ITUR_BT_601_SHIFT - 1)) + ITUR_BT_601_CVR * V;
int guv = (1 << (ITUR_BT_601_SHIFT - 1)) - ITUR_BT_601_CVG * V - ITUR_BT_601_CUG * U;
int buv = (1 << (ITUR_BT_601_SHIFT - 1)) + ITUR_BT_601_CUB * U;
Y1 = max(0, Y1 - 16) * ITUR_BT_601_CY;
dst1[2 - bidx] = convert_uchar_sat((Y1 + ruv) >> ITUR_BT_601_SHIFT);
dst1[1] = convert_uchar_sat((Y1 + guv) >> ITUR_BT_601_SHIFT);
dst1[bidx] = convert_uchar_sat((Y1 + buv) >> ITUR_BT_601_SHIFT);
dst1[3] = 255;
Y2 = max(0, Y2 - 16) * ITUR_BT_601_CY;
dst1[6 - bidx] = convert_uchar_sat((Y2 + ruv) >> ITUR_BT_601_SHIFT);
dst1[5] = convert_uchar_sat((Y2 + guv) >> ITUR_BT_601_SHIFT);
dst1[4 + bidx] = convert_uchar_sat((Y2 + buv) >> ITUR_BT_601_SHIFT);
dst1[7] = 255;
Y3 = max(0, Y3 - 16) * ITUR_BT_601_CY;
dst2[2 - bidx] = convert_uchar_sat((Y3 + ruv) >> ITUR_BT_601_SHIFT);
dst2[1] = convert_uchar_sat((Y3 + guv) >> ITUR_BT_601_SHIFT);
dst2[bidx] = convert_uchar_sat((Y3 + buv) >> ITUR_BT_601_SHIFT);
dst2[3] = 255;
Y4 = max(0, Y4 - 16) * ITUR_BT_601_CY;
dst2[6 - bidx] = convert_uchar_sat((Y4 + ruv) >> ITUR_BT_601_SHIFT);
dst2[5] = convert_uchar_sat((Y4 + guv) >> ITUR_BT_601_SHIFT);
dst2[4 + bidx] = convert_uchar_sat((Y4 + buv) >> ITUR_BT_601_SHIFT);
dst2[7] = 255;
}
}
///////////////////////////////////// RGB <-> YCrCb //////////////////////////////////////
__constant float c_RGB2YCrCbCoeffs_f[5] = {0.299f, 0.587f, 0.114f, 0.713f, 0.564f};
__constant int c_RGB2YCrCbCoeffs_i[5] = {R2Y, G2Y, B2Y, 11682, 9241};
__kernel void RGB2YCrCb(int cols, int rows, int src_step, int dst_step,
int bidx, __global const DATA_TYPE* src, __global DATA_TYPE* dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
x <<= 2;
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
DATA_TYPE rgb[] = { src[src_idx], src[src_idx + 1], src[src_idx + 2] };
#ifdef DEPTH_5
__constant float * coeffs = c_RGB2YCrCbCoeffs_f;
DATA_TYPE Y = rgb[0] * coeffs[bidx^2] + rgb[1] * coeffs[1] + rgb[2] * coeffs[bidx];
DATA_TYPE Cr = (rgb[bidx^2] - Y) * coeffs[3] + HALF_MAX;
DATA_TYPE Cb = (rgb[bidx] - Y) * coeffs[4] + HALF_MAX;
#else
__constant int * coeffs = c_RGB2YCrCbCoeffs_i;
int delta = HALF_MAX * (1 << yuv_shift);
int Y = CV_DESCALE(rgb[0] * coeffs[bidx^2] + rgb[1] * coeffs[1] + rgb[2] * coeffs[bidx], yuv_shift);
int Cr = CV_DESCALE((rgb[bidx^2] - Y) * coeffs[3] + delta, yuv_shift);
int Cb = CV_DESCALE((rgb[bidx] - Y) * coeffs[4] + delta, yuv_shift);
#endif
dst[dst_idx] = SAT_CAST( Y );
dst[dst_idx + 1] = SAT_CAST( Cr );
dst[dst_idx + 2] = SAT_CAST( Cb );
}
}
__constant float c_YCrCb2RGBCoeffs_f[4] = { 1.403f, -0.714f, -0.344f, 1.773f };
__constant int c_YCrCb2RGBCoeffs_i[4] = { 22987, -11698, -5636, 29049 };
__kernel void YCrCb2RGB(int cols, int rows, int src_step, int dst_step,
int bidx, __global const DATA_TYPE* src, __global DATA_TYPE* dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
x <<= 2;
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
DATA_TYPE ycrcb[] = { src[src_idx], src[src_idx + 1], src[src_idx + 2] };
#ifdef DEPTH_5
__constant float * coeff = c_YCrCb2RGBCoeffs_f;
float r = ycrcb[0] + coeff[0] * (ycrcb[1] - HALF_MAX);
float g = ycrcb[0] + coeff[1] * (ycrcb[1] - HALF_MAX) + coeff[2] * (ycrcb[2] - HALF_MAX);
float b = ycrcb[0] + coeff[3] * (ycrcb[2] - HALF_MAX);
#else
__constant int * coeff = c_YCrCb2RGBCoeffs_i;
int r = ycrcb[0] + CV_DESCALE(coeff[0] * (ycrcb[1] - HALF_MAX), yuv_shift);
int g = ycrcb[0] + CV_DESCALE(coeff[1] * (ycrcb[1] - HALF_MAX) + coeff[2] * (ycrcb[2] - HALF_MAX), yuv_shift);
int b = ycrcb[0] + CV_DESCALE(coeff[3] * (ycrcb[2] - HALF_MAX), yuv_shift);
#endif
dst[dst_idx + (bidx^2)] = SAT_CAST(r);
dst[dst_idx + 1] = SAT_CAST(g);
dst[dst_idx + bidx] = SAT_CAST(b);
#if dcn == 4
dst[dst_idx + 3] = MAX_NUM;
#endif
}
}
///////////////////////////////////// RGB <-> XYZ //////////////////////////////////////
__kernel void RGB2XYZ(int cols, int rows, int src_step, int dst_step,
int bidx, __global const DATA_TYPE* src, __global DATA_TYPE* dst,
int src_offset, int dst_offset, __constant COEFF_TYPE * coeffs)
{
int dx = get_global_id(0);
int dy = get_global_id(1);
if (dy < rows && dx < cols)
{
dx <<= 2;
int src_idx = mad24(dy, src_step, src_offset + dx);
int dst_idx = mad24(dy, dst_step, dst_offset + dx);
DATA_TYPE r = src[src_idx], g = src[src_idx + 1], b = src[src_idx + 2];
#ifdef DEPTH_5
float x = r * coeffs[0] + g * coeffs[1] + b * coeffs[2];
float y = r * coeffs[3] + g * coeffs[4] + b * coeffs[5];
float z = r * coeffs[6] + g * coeffs[7] + b * coeffs[8];
#else
int x = CV_DESCALE(r * coeffs[0] + g * coeffs[1] + b * coeffs[2], xyz_shift);
int y = CV_DESCALE(r * coeffs[3] + g * coeffs[4] + b * coeffs[5], xyz_shift);
int z = CV_DESCALE(r * coeffs[6] + g * coeffs[7] + b * coeffs[8], xyz_shift);
#endif
dst[dst_idx] = SAT_CAST(x);
dst[dst_idx + 1] = SAT_CAST(y);
dst[dst_idx + 2] = SAT_CAST(z);
}
}
__kernel void XYZ2RGB(int cols, int rows, int src_step, int dst_step,
int bidx, __global const DATA_TYPE* src, __global DATA_TYPE* dst,
int src_offset, int dst_offset, __constant COEFF_TYPE * coeffs)
{
int dx = get_global_id(0);
int dy = get_global_id(1);
if (dy < rows && dx < cols)
{
dx <<= 2;
int src_idx = mad24(dy, src_step, src_offset + dx);
int dst_idx = mad24(dy, dst_step, dst_offset + dx);
DATA_TYPE x = src[src_idx], y = src[src_idx + 1], z = src[src_idx + 2];
#ifdef DEPTH_5
float b = x * coeffs[0] + y * coeffs[1] + z * coeffs[2];
float g = x * coeffs[3] + y * coeffs[4] + z * coeffs[5];
float r = x * coeffs[6] + y * coeffs[7] + z * coeffs[8];
#else
int b = CV_DESCALE(x * coeffs[0] + y * coeffs[1] + z * coeffs[2], xyz_shift);
int g = CV_DESCALE(x * coeffs[3] + y * coeffs[4] + z * coeffs[5], xyz_shift);
int r = CV_DESCALE(x * coeffs[6] + y * coeffs[7] + z * coeffs[8], xyz_shift);
#endif
dst[dst_idx] = SAT_CAST(b);
dst[dst_idx + 1] = SAT_CAST(g);
dst[dst_idx + 2] = SAT_CAST(r);
#if dcn == 4
dst[dst_idx + 3] = MAX_NUM;
#endif
}
}
///////////////////////////////////// RGB[A] <-> BGR[A] //////////////////////////////////////
__kernel void RGB(int cols, int rows, int src_step, int dst_step,
__global const DATA_TYPE * src, __global DATA_TYPE * dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
x <<= 2;
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
#ifdef REVERSE
dst[dst_idx] = src[src_idx + 2];
dst[dst_idx + 1] = src[src_idx + 1];
dst[dst_idx + 2] = src[src_idx];
#elif defined ORDER
dst[dst_idx] = src[src_idx];
dst[dst_idx + 1] = src[src_idx + 1];
dst[dst_idx + 2] = src[src_idx + 2];
#endif
#if dcn == 4
#if scn == 3
dst[dst_idx + 3] = MAX_NUM;
#else
dst[dst_idx + 3] = src[src_idx + 3];
#endif
#endif
}
}
///////////////////////////////////// RGB5x5 <-> RGB //////////////////////////////////////
__kernel void RGB5x52RGB(int cols, int rows, int src_step, int dst_step, int bidx,
__global const ushort * src, __global uchar * dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + (x << 2));
ushort t = src[src_idx];
#if greenbits == 6
dst[dst_idx + bidx] = (uchar)(t << 3);
dst[dst_idx + 1] = (uchar)((t >> 3) & ~3);
dst[dst_idx + (bidx^2)] = (uchar)((t >> 8) & ~7);
#else
dst[dst_idx + bidx] = (uchar)(t << 3);
dst[dst_idx + 1] = (uchar)((t >> 2) & ~7);
dst[dst_idx + (bidx^2)] = (uchar)((t >> 7) & ~7);
#endif
#if dcn == 4
#if greenbits == 6
dst[dst_idx + 3] = 255;
#else
dst[dst_idx + 3] = t & 0x8000 ? 255 : 0;
#endif
#endif
}
}
__kernel void RGB2RGB5x5(int cols, int rows, int src_step, int dst_step, int bidx,
__global const uchar * src, __global ushort * dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
int src_idx = mad24(y, src_step, src_offset + (x << 2));
int dst_idx = mad24(y, dst_step, dst_offset + x);
#if greenbits == 6
dst[dst_idx] = (ushort)((src[src_idx + bidx] >> 3)|((src[src_idx + 1]&~3) << 3)|((src[src_idx + (bidx^2)]&~7) << 8));
#elif scn == 3
dst[dst_idx] = (ushort)((src[src_idx + bidx] >> 3)|((src[src_idx + 1]&~7) << 2)|((src[src_idx + (bidx^2)]&~7) << 7));
#else
dst[dst_idx] = (ushort)((src[src_idx + bidx] >> 3)|((src[src_idx + 1]&~7) << 2)|
((src[src_idx + (bidx^2)]&~7) << 7)|(src[src_idx + 3] ? 0x8000 : 0));
#endif
}
}
///////////////////////////////////// RGB5x5 <-> RGB //////////////////////////////////////
__kernel void BGR5x52Gray(int cols, int rows, int src_step, int dst_step, int bidx,
__global const ushort * src, __global uchar * dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
int t = src[src_idx];
#if greenbits == 6
dst[dst_idx] = (uchar)CV_DESCALE(((t << 3) & 0xf8)*B2Y +
((t >> 3) & 0xfc)*G2Y +
((t >> 8) & 0xf8)*R2Y, yuv_shift);
#else
dst[dst_idx] = (uchar)CV_DESCALE(((t << 3) & 0xf8)*B2Y +
((t >> 2) & 0xf8)*G2Y +
((t >> 7) & 0xf8)*R2Y, yuv_shift);
#endif
}
}
__kernel void Gray2BGR5x5(int cols, int rows, int src_step, int dst_step, int bidx,
__global const uchar * src, __global ushort * dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
int t = src[src_idx];
#if greenbits == 6
dst[dst_idx] = (ushort)((t >> 3) | ((t & ~3) << 3) | ((t & ~7) << 8));
#else
t >>= 3;
dst[dst_idx] = (ushort)(t|(t << 5)|(t << 10));
#endif
}
}
///////////////////////////////////// RGB <-> HSV //////////////////////////////////////
__constant int sector_data[][3] = { {1, 3, 0}, { 1, 0, 2 }, { 3, 0, 1 }, { 0, 2, 1 }, { 0, 1, 3 }, { 2, 1, 0 } };
#ifdef DEPTH_0
__kernel void RGB2HSV(int cols, int rows, int src_step, int dst_step, int bidx,
__global const uchar * src, __global uchar * dst,
int src_offset, int dst_offset,
__constant int * sdiv_table, __constant int * hdiv_table)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
x <<= 2;
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
int b = src[src_idx + bidx], g = src[src_idx + 1], r = src[src_idx + (bidx^2)];
int h, s, v = b;
int vmin = b, diff;
int vr, vg;
v = max( v, g );
v = max( v, r );
vmin = min( vmin, g );
vmin = min( vmin, r );
diff = v - vmin;
vr = v == r ? -1 : 0;
vg = v == g ? -1 : 0;
s = (diff * sdiv_table[v] + (1 << (hsv_shift-1))) >> hsv_shift;
h = (vr & (g - b)) +
(~vr & ((vg & (b - r + 2 * diff)) + ((~vg) & (r - g + 4 * diff))));
h = (h * hdiv_table[diff] + (1 << (hsv_shift-1))) >> hsv_shift;
h += h < 0 ? hrange : 0;
dst[dst_idx] = convert_uchar_sat_rte(h);
dst[dst_idx + 1] = (uchar)s;
dst[dst_idx + 2] = (uchar)v;
}
}
__kernel void HSV2RGB(int cols, int rows, int src_step, int dst_step, int bidx,
__global const uchar * src, __global uchar * dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
x <<= 2;
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
float h = src[src_idx], s = src[src_idx + 1]*(1/255.f), v = src[src_idx + 2]*(1/255.f);
float b, g, r;
if (s != 0)
{
float tab[4];
int sector;
h *= hscale;
if( h < 0 )
do h += 6; while( h < 0 );
else if( h >= 6 )
do h -= 6; while( h >= 6 );
sector = convert_int_sat_rtn(h);
h -= sector;
if( (unsigned)sector >= 6u )
{
sector = 0;
h = 0.f;
}
tab[0] = v;
tab[1] = v*(1.f - s);
tab[2] = v*(1.f - s*h);
tab[3] = v*(1.f - s*(1.f - h));
b = tab[sector_data[sector][0]];
g = tab[sector_data[sector][1]];
r = tab[sector_data[sector][2]];
}
else
b = g = r = v;
dst[dst_idx + bidx] = convert_uchar_sat_rte(b*255.f);
dst[dst_idx + 1] = convert_uchar_sat_rte(g*255.f);
dst[dst_idx + (bidx^2)] = convert_uchar_sat_rte(r*255.f);
#if dcn == 4
dst[dst_idx + 3] = MAX_NUM;
#endif
}
}
#elif defined DEPTH_5
__kernel void RGB2HSV(int cols, int rows, int src_step, int dst_step, int bidx,
__global const float * src, __global float * dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
x <<= 2;
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
float b = src[src_idx + bidx], g = src[src_idx + 1], r = src[src_idx + (bidx^2)];
float h, s, v;
float vmin, diff;
v = vmin = r;
if( v < g ) v = g;
if( v < b ) v = b;
if( vmin > g ) vmin = g;
if( vmin > b ) vmin = b;
diff = v - vmin;
s = diff/(float)(fabs(v) + FLT_EPSILON);
diff = (float)(60./(diff + FLT_EPSILON));
if( v == r )
h = (g - b)*diff;
else if( v == g )
h = (b - r)*diff + 120.f;
else
h = (r - g)*diff + 240.f;
if( h < 0 ) h += 360.f;
dst[dst_idx] = h*hscale;
dst[dst_idx + 1] = s;
dst[dst_idx + 2] = v;
}
}
__kernel void HSV2RGB(int cols, int rows, int src_step, int dst_step, int bidx,
__global const float * src, __global float * dst,
int src_offset, int dst_offset)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (y < rows && x < cols)
{
x <<= 2;
int src_idx = mad24(y, src_step, src_offset + x);
int dst_idx = mad24(y, dst_step, dst_offset + x);
float h = src[src_idx], s = src[src_idx + 1], v = src[src_idx + 2];
float b, g, r;
if (s != 0)
{
float tab[4];
int sector;
h *= hscale;
if(h < 0)
do h += 6; while (h < 0);
else if (h >= 6)
do h -= 6; while (h >= 6);
sector = convert_int_sat_rtn(h);
h -= sector;
if ((unsigned)sector >= 6u)
{
sector = 0;
h = 0.f;
}
tab[0] = v;
tab[1] = v*(1.f - s);
tab[2] = v*(1.f - s*h);
tab[3] = v*(1.f - s*(1.f - h));
b = tab[sector_data[sector][0]];
g = tab[sector_data[sector][1]];
r = tab[sector_data[sector][2]];
}
else
b = g = r = v;
dst[dst_idx + bidx] = b;
dst[dst_idx + 1] = g;
dst[dst_idx + (bidx^2)] = r;
#if dcn == 4
dst[dst_idx + 3] = MAX_NUM;
#endif
}
}
#endif
///////////////////////////////////// RGB <-> HLS //////////////////////////////////////
#ifdef DEPTH_0

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