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added RGBA <-> mRGBA

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This commit is contained in:
Ilya Lavrenov 2013-11-14 12:02:32 +04:00
parent 1b7c5b201d
commit fe76b2116a
3 changed files with 67 additions and 0 deletions
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9
modules/ocl/src/color.cpp
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@ -461,6 +461,15 @@ static void cvtColor_caller(const oclMat &src, oclMat &dst, int code, int dcn)
toRGB_caller(src, dst, bidx, kernelName, format(" -D hrange=%d -D hscale=%f", hrange, 6.f/hrange));
break;
}
case CV_RGBA2mRGBA: case CV_mRGBA2RGBA:
{
CV_Assert(scn == 4 && depth == CV_8U);
dst.create(sz, CV_MAKETYPE(depth, 4));
std::string kernelName = code == CV_RGBA2mRGBA ? "RGBA2mRGBA" : "mRGBA2RGBA";
fromRGB_caller(src, dst, 0, kernelName);
break;
}
default:
CV_Error( CV_StsBadFlag, "Unknown/unsupported color conversion code" );
}

53
modules/ocl/src/opencl/cvt_color.cl
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@ -962,3 +962,56 @@ __kernel void HLS2RGB(int cols, int rows, int src_step, int dst_step, int bidx,
}
#endif
/////////////////////////// RGBA <-> mRGBA (alpha premultiplied) //////////////
#ifdef DEPTH_0
__kernel void RGBA2mRGBA(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);
uchar v0 = src[src_idx], v1 = src[src_idx + 1];
uchar v2 = src[src_idx + 2], v3 = src[src_idx + 3];
dst[dst_idx] = (v0 * v3 + HALF_MAX) / MAX_NUM;
dst[dst_idx + 1] = (v1 * v3 + HALF_MAX) / MAX_NUM;
dst[dst_idx + 2] = (v2 * v3 + HALF_MAX) / MAX_NUM;
dst[dst_idx + 3] = v3;
}
}
__kernel void mRGBA2RGBA(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);
uchar v0 = src[src_idx], v1 = src[src_idx + 1];
uchar v2 = src[src_idx + 2], v3 = src[src_idx + 3];
uchar v3_half = v3 / 2;
dst[dst_idx] = v3 == 0 ? 0 : (v0 * MAX_NUM + v3_half) / v3;
dst[dst_idx + 1] = v3 == 0 ? 0 : (v1 * MAX_NUM + v3_half) / v3;
dst[dst_idx + 2] = v3 == 0 ? 0 : (v2 * MAX_NUM + v3_half) / v3;
dst[dst_idx + 3] = v3;
}
}
#endif

5
modules/ocl/test/test_color.cpp
View File

@ -259,6 +259,11 @@ OCL_TEST_P(CvtColor8u, BGR5552GRAY) { doTest(2, 1, CVTCODE(BGR5552GRAY)); }
OCL_TEST_P(CvtColor8u, GRAY2BGR565) { doTest(1, 2, CVTCODE(GRAY2BGR565)); }
OCL_TEST_P(CvtColor8u, GRAY2BGR555) { doTest(1, 2, CVTCODE(GRAY2BGR555)); }
// RGBA <-> mRGBA
OCL_TEST_P(CvtColor8u, RGBA2mRGBA) { doTest(4, 4, CVTCODE(RGBA2mRGBA)); }
OCL_TEST_P(CvtColor8u, mRGBA2RGBA) { doTest(4, 4, CVTCODE(mRGBA2RGBA)); }
// YUV -> RGBA_NV12
struct CvtColor_YUV420 :