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optimized cv::flip (CV_8UC1)

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This commit is contained in:
Ilya Lavrenov
2014-06-02 14:21:03 +04:00
parent 6d3413bc6a
commit 405f12fe80
2 changed files with 44 additions and 13 deletions
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23
modules/core/src/copy.cpp
View File

@@ -610,13 +610,13 @@ flipVert( const uchar* src0, size_t sstep, uchar* dst0, size_t dstep, Size size,
#ifdef HAVE_OPENCL
#define DIVUP(total, grain) (((total) + (grain) - 1) / (grain))
enum { FLIP_COLS = 1 << 0, FLIP_ROWS = 1 << 1, FLIP_BOTH = FLIP_ROWS | FLIP_COLS };
static bool ocl_flip(InputArray _src, OutputArray _dst, int flipCode )
{
CV_Assert(flipCode >= - 1 && flipCode <= 1);
int type = _src.type(), depth = CV_MAT_DEPTH(type), cn = CV_MAT_CN(type), flipType;
CV_Assert(flipCode >= -1 && flipCode <= 1);
int type = _src.type(), depth = CV_MAT_DEPTH(type), cn = CV_MAT_CN(type),
flipType, kercn = std::min(ocl::predictOptimalVectorWidth(_src, _dst), 4);;
if (cn > 4)
return false;
@@ -631,10 +631,12 @@ static bool ocl_flip(InputArray _src, OutputArray _dst, int flipCode )
ocl::Device dev = ocl::Device::getDefault();
int pxPerWIy = (dev.isIntel() && (dev.type() & ocl::Device::TYPE_GPU)) ? 4 : 1;
kercn = std::max(kercn, cn);
ocl::Kernel k(kernelName, ocl::core::flip_oclsrc,
format( "-D T=%s -D T1=%s -D cn=%d -D PIX_PER_WI_Y=%d", ocl::memopTypeToStr(type),
ocl::memopTypeToStr(depth), cn, pxPerWIy));
format( "-D T=%s -D T1=%s -D cn=%d -D PIX_PER_WI_Y=%d -D kercn=%d",
ocl::memopTypeToStr(CV_MAKE_TYPE(depth, kercn)),
ocl::memopTypeToStr(depth), cn, pxPerWIy, kercn));
if (k.empty())
return false;
@@ -642,20 +644,19 @@ static bool ocl_flip(InputArray _src, OutputArray _dst, int flipCode )
_dst.create(size, type);
UMat src = _src.getUMat(), dst = _dst.getUMat();
int cols = size.width, rows = size.height;
int cols = size.width * cn / kercn, rows = size.height;
cols = flipType == FLIP_COLS ? (cols + 1) >> 1 : cols;
rows = flipType & FLIP_ROWS ? (rows + 1) >> 1 : rows;
k.args(ocl::KernelArg::ReadOnlyNoSize(src),
ocl::KernelArg::WriteOnly(dst), rows, cols);
ocl::KernelArg::WriteOnly(dst, cn, kercn), rows, cols);
size_t maxWorkGroupSize = dev.maxWorkGroupSize();
CV_Assert(maxWorkGroupSize % 4 == 0);
size_t globalsize[2] = { cols, rows }, localsize[2] = { maxWorkGroupSize / 4, 4 };
globalsize[1] = DIVUP(globalsize[1], pxPerWIy);
return k.run(2, globalsize, (flipType == FLIP_COLS) && (!dev.isIntel()) ? localsize : NULL, false);
size_t globalsize[2] = { cols, (rows + pxPerWIy - 1) / pxPerWIy },
localsize[2] = { maxWorkGroupSize / 4, 4 };
return k.run(2, globalsize, (flipType == FLIP_COLS) && !dev.isIntel() ? localsize : NULL, false);
}
#endif

34
modules/core/src/opencl/flip.cl
View File

@@ -39,7 +39,7 @@
//
//M*/
#if cn != 3
#if kercn != 3
#define loadpix(addr) *(__global const T *)(addr)
#define storepix(val, addr) *(__global T *)(addr) = val
#define TSIZE (int)sizeof(T)
@@ -54,7 +54,7 @@ __kernel void arithm_flip_rows(__global const uchar * srcptr, int src_step, int
int rows, int cols, int thread_rows, int thread_cols)
{
int x = get_global_id(0);
int y0 = get_global_id(1)*PIX_PER_WI_Y;
int y0 = get_global_id(1) * PIX_PER_WI_Y;
if (x < cols)
{
@@ -100,6 +100,21 @@ __kernel void arithm_flip_rows_cols(__global const uchar * srcptr, int src_step,
T src0 = loadpix(srcptr + src_index0);
T src1 = loadpix(srcptr + src_index1);
#if kercn == 2
#if cn == 1
src0 = src0.s10;
src1 = src1.s10;
#endif
#elif kercn == 4
#if cn == 1
src0 = src0.s3210;
src1 = src1.s3210;
#elif cn == 2
src0 = src0.s2301;
src1 = src1.s2301;
#endif
#endif
storepix(src1, dstptr + dst_index0);
storepix(src0, dstptr + dst_index1);
@@ -131,6 +146,21 @@ __kernel void arithm_flip_cols(__global const uchar * srcptr, int src_step, int
T src0 = loadpix(srcptr + src_index0);
T src1 = loadpix(srcptr + src_index1);
#if kercn == 2
#if cn == 1
src0 = src0.s10;
src1 = src1.s10;
#endif
#elif kercn == 4
#if cn == 1
src0 = src0.s3210;
src1 = src1.s3210;
#elif cn == 2
src0 = src0.s2301;
src1 = src1.s2301;
#endif
#endif
storepix(src1, dstptr + dst_index0);
storepix(src0, dstptr + dst_index1);