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opencv/modules/core/src/matrix_transform.cpp
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rogday e16cb8b4a2 Merge pull request #21703 from rogday:transpose 
Add n-dimensional transpose to core

* add n-dimensional transpose to core

* add performance test, write sequentially and address review comments
2022-03-14 13:10:04 +00:00

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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html
#include "precomp.hpp"
#include "opencl_kernels_core.hpp"
#include "opencv2/core/detail/dispatch_helper.impl.hpp"
namespace cv {
////////////////////////////////////// transpose /////////////////////////////////////////
template<typename T> static void
transpose_( const uchar* src, size_t sstep, uchar* dst, size_t dstep, Size sz )
{
int i=0, j, m = sz.width, n = sz.height;
#if CV_ENABLE_UNROLLED
for(; i <= m - 4; i += 4 )
{
T* d0 = (T*)(dst + dstep*i);
T* d1 = (T*)(dst + dstep*(i+1));
T* d2 = (T*)(dst + dstep*(i+2));
T* d3 = (T*)(dst + dstep*(i+3));
for( j = 0; j <= n - 4; j += 4 )
{
const T* s0 = (const T*)(src + i*sizeof(T) + sstep*j);
const T* s1 = (const T*)(src + i*sizeof(T) + sstep*(j+1));
const T* s2 = (const T*)(src + i*sizeof(T) + sstep*(j+2));
const T* s3 = (const T*)(src + i*sizeof(T) + sstep*(j+3));
d0[j] = s0[0]; d0[j+1] = s1[0]; d0[j+2] = s2[0]; d0[j+3] = s3[0];
d1[j] = s0[1]; d1[j+1] = s1[1]; d1[j+2] = s2[1]; d1[j+3] = s3[1];
d2[j] = s0[2]; d2[j+1] = s1[2]; d2[j+2] = s2[2]; d2[j+3] = s3[2];
d3[j] = s0[3]; d3[j+1] = s1[3]; d3[j+2] = s2[3]; d3[j+3] = s3[3];
}
for( ; j < n; j++ )
{
const T* s0 = (const T*)(src + i*sizeof(T) + j*sstep);
d0[j] = s0[0]; d1[j] = s0[1]; d2[j] = s0[2]; d3[j] = s0[3];
}
}
#endif
for( ; i < m; i++ )
{
T* d0 = (T*)(dst + dstep*i);
j = 0;
#if CV_ENABLE_UNROLLED
for(; j <= n - 4; j += 4 )
{
const T* s0 = (const T*)(src + i*sizeof(T) + sstep*j);
const T* s1 = (const T*)(src + i*sizeof(T) + sstep*(j+1));
const T* s2 = (const T*)(src + i*sizeof(T) + sstep*(j+2));
const T* s3 = (const T*)(src + i*sizeof(T) + sstep*(j+3));
d0[j] = s0[0]; d0[j+1] = s1[0]; d0[j+2] = s2[0]; d0[j+3] = s3[0];
}
#endif
for( ; j < n; j++ )
{
const T* s0 = (const T*)(src + i*sizeof(T) + j*sstep);
d0[j] = s0[0];
}
}
}
template<typename T> static void
transposeI_( uchar* data, size_t step, int n )
{
for( int i = 0; i < n; i++ )
{
T* row = (T*)(data + step*i);
uchar* data1 = data + i*sizeof(T);
for( int j = i+1; j < n; j++ )
std::swap( row[j], *(T*)(data1 + step*j) );
}
}
typedef void (*TransposeFunc)( const uchar* src, size_t sstep, uchar* dst, size_t dstep, Size sz );
typedef void (*TransposeInplaceFunc)( uchar* data, size_t step, int n );
#define DEF_TRANSPOSE_FUNC(suffix, type) \
static void transpose_##suffix( const uchar* src, size_t sstep, uchar* dst, size_t dstep, Size sz ) \
{ transpose_<type>(src, sstep, dst, dstep, sz); } \
\
static void transposeI_##suffix( uchar* data, size_t step, int n ) \
{ transposeI_<type>(data, step, n); }
DEF_TRANSPOSE_FUNC(8u, uchar)
DEF_TRANSPOSE_FUNC(16u, ushort)
DEF_TRANSPOSE_FUNC(8uC3, Vec3b)
DEF_TRANSPOSE_FUNC(32s, int)
DEF_TRANSPOSE_FUNC(16uC3, Vec3s)
DEF_TRANSPOSE_FUNC(32sC2, Vec2i)
DEF_TRANSPOSE_FUNC(32sC3, Vec3i)
DEF_TRANSPOSE_FUNC(32sC4, Vec4i)
DEF_TRANSPOSE_FUNC(32sC6, Vec6i)
DEF_TRANSPOSE_FUNC(32sC8, Vec8i)
static TransposeFunc transposeTab[] =
{
0, transpose_8u, transpose_16u, transpose_8uC3, transpose_32s, 0, transpose_16uC3, 0,
transpose_32sC2, 0, 0, 0, transpose_32sC3, 0, 0, 0, transpose_32sC4,
0, 0, 0, 0, 0, 0, 0, transpose_32sC6, 0, 0, 0, 0, 0, 0, 0, transpose_32sC8
};
static TransposeInplaceFunc transposeInplaceTab[] =
{
0, transposeI_8u, transposeI_16u, transposeI_8uC3, transposeI_32s, 0, transposeI_16uC3, 0,
transposeI_32sC2, 0, 0, 0, transposeI_32sC3, 0, 0, 0, transposeI_32sC4,
0, 0, 0, 0, 0, 0, 0, transposeI_32sC6, 0, 0, 0, 0, 0, 0, 0, transposeI_32sC8
};
#ifdef HAVE_OPENCL
static bool ocl_transpose( InputArray _src, OutputArray _dst )
{
const ocl::Device & dev = ocl::Device::getDefault();
const int TILE_DIM = 32, BLOCK_ROWS = 8;
int type = _src.type(), cn = CV_MAT_CN(type), depth = CV_MAT_DEPTH(type),
rowsPerWI = dev.isIntel() ? 4 : 1;
UMat src = _src.getUMat();
_dst.create(src.cols, src.rows, type);
UMat dst = _dst.getUMat();
String kernelName("transpose");
bool inplace = dst.u == src.u;
if (inplace)
{
CV_Assert(dst.cols == dst.rows);
kernelName += "_inplace";
}
else
{
// check required local memory size
size_t required_local_memory = (size_t) TILE_DIM*(TILE_DIM+1)*CV_ELEM_SIZE(type);
if (required_local_memory > ocl::Device::getDefault().localMemSize())
return false;
}
ocl::Kernel k(kernelName.c_str(), ocl::core::transpose_oclsrc,
format("-D T=%s -D T1=%s -D cn=%d -D TILE_DIM=%d -D BLOCK_ROWS=%d -D rowsPerWI=%d%s",
ocl::memopTypeToStr(type), ocl::memopTypeToStr(depth),
cn, TILE_DIM, BLOCK_ROWS, rowsPerWI, inplace ? " -D INPLACE" : ""));
if (k.empty())
return false;
if (inplace)
k.args(ocl::KernelArg::ReadWriteNoSize(dst), dst.rows);
else
k.args(ocl::KernelArg::ReadOnly(src),
ocl::KernelArg::WriteOnlyNoSize(dst));
size_t localsize[2] = { TILE_DIM, BLOCK_ROWS };
size_t globalsize[2] = { (size_t)src.cols, inplace ? ((size_t)src.rows + rowsPerWI - 1) / rowsPerWI : (divUp((size_t)src.rows, TILE_DIM) * BLOCK_ROWS) };
if (inplace && dev.isIntel())
{
localsize[0] = 16;
localsize[1] = dev.maxWorkGroupSize() / localsize[0];
}
return k.run(2, globalsize, localsize, false);
}
#endif
#ifdef HAVE_IPP
static bool ipp_transpose( Mat &src, Mat &dst )
{
CV_INSTRUMENT_REGION_IPP();
int type = src.type();
typedef IppStatus (CV_STDCALL * IppiTranspose)(const void * pSrc, int srcStep, void * pDst, int dstStep, IppiSize roiSize);
typedef IppStatus (CV_STDCALL * IppiTransposeI)(const void * pSrcDst, int srcDstStep, IppiSize roiSize);
IppiTranspose ippiTranspose = 0;
IppiTransposeI ippiTranspose_I = 0;
if (dst.data == src.data && dst.cols == dst.rows)
{
CV_SUPPRESS_DEPRECATED_START
ippiTranspose_I =
type == CV_8UC1 ? (IppiTransposeI)ippiTranspose_8u_C1IR :
type == CV_8UC3 ? (IppiTransposeI)ippiTranspose_8u_C3IR :
type == CV_8UC4 ? (IppiTransposeI)ippiTranspose_8u_C4IR :
type == CV_16UC1 ? (IppiTransposeI)ippiTranspose_16u_C1IR :
type == CV_16UC3 ? (IppiTransposeI)ippiTranspose_16u_C3IR :
type == CV_16UC4 ? (IppiTransposeI)ippiTranspose_16u_C4IR :
type == CV_16SC1 ? (IppiTransposeI)ippiTranspose_16s_C1IR :
type == CV_16SC3 ? (IppiTransposeI)ippiTranspose_16s_C3IR :
type == CV_16SC4 ? (IppiTransposeI)ippiTranspose_16s_C4IR :
type == CV_32SC1 ? (IppiTransposeI)ippiTranspose_32s_C1IR :
type == CV_32SC3 ? (IppiTransposeI)ippiTranspose_32s_C3IR :
type == CV_32SC4 ? (IppiTransposeI)ippiTranspose_32s_C4IR :
type == CV_32FC1 ? (IppiTransposeI)ippiTranspose_32f_C1IR :
type == CV_32FC3 ? (IppiTransposeI)ippiTranspose_32f_C3IR :
type == CV_32FC4 ? (IppiTransposeI)ippiTranspose_32f_C4IR : 0;
CV_SUPPRESS_DEPRECATED_END
}
else
{
ippiTranspose =
type == CV_8UC1 ? (IppiTranspose)ippiTranspose_8u_C1R :
type == CV_8UC3 ? (IppiTranspose)ippiTranspose_8u_C3R :
type == CV_8UC4 ? (IppiTranspose)ippiTranspose_8u_C4R :
type == CV_16UC1 ? (IppiTranspose)ippiTranspose_16u_C1R :
type == CV_16UC3 ? (IppiTranspose)ippiTranspose_16u_C3R :
type == CV_16UC4 ? (IppiTranspose)ippiTranspose_16u_C4R :
type == CV_16SC1 ? (IppiTranspose)ippiTranspose_16s_C1R :
type == CV_16SC3 ? (IppiTranspose)ippiTranspose_16s_C3R :
type == CV_16SC4 ? (IppiTranspose)ippiTranspose_16s_C4R :
type == CV_32SC1 ? (IppiTranspose)ippiTranspose_32s_C1R :
type == CV_32SC3 ? (IppiTranspose)ippiTranspose_32s_C3R :
type == CV_32SC4 ? (IppiTranspose)ippiTranspose_32s_C4R :
type == CV_32FC1 ? (IppiTranspose)ippiTranspose_32f_C1R :
type == CV_32FC3 ? (IppiTranspose)ippiTranspose_32f_C3R :
type == CV_32FC4 ? (IppiTranspose)ippiTranspose_32f_C4R : 0;
}
IppiSize roiSize = { src.cols, src.rows };
if (ippiTranspose != 0)
{
if (CV_INSTRUMENT_FUN_IPP(ippiTranspose, src.ptr(), (int)src.step, dst.ptr(), (int)dst.step, roiSize) >= 0)
return true;
}
else if (ippiTranspose_I != 0)
{
if (CV_INSTRUMENT_FUN_IPP(ippiTranspose_I, dst.ptr(), (int)dst.step, roiSize) >= 0)
return true;
}
return false;
}
#endif
void transpose( InputArray _src, OutputArray _dst )
{
CV_INSTRUMENT_REGION();
int type = _src.type(), esz = CV_ELEM_SIZE(type);
CV_Assert( _src.dims() <= 2 && esz <= 32 );
CV_OCL_RUN(_dst.isUMat(),
ocl_transpose(_src, _dst))
Mat src = _src.getMat();
if( src.empty() )
{
_dst.release();
return;
}
_dst.create(src.cols, src.rows, src.type());
Mat dst = _dst.getMat();
// handle the case of single-column/single-row matrices, stored in STL vectors.
if( src.rows != dst.cols || src.cols != dst.rows )
{
CV_Assert( src.size() == dst.size() && (src.cols == 1 || src.rows == 1) );
src.copyTo(dst);
return;
}
CV_IPP_RUN_FAST(ipp_transpose(src, dst))
if( dst.data == src.data )
{
TransposeInplaceFunc func = transposeInplaceTab[esz];
CV_Assert( func != 0 );
CV_Assert( dst.cols == dst.rows );
func( dst.ptr(), dst.step, dst.rows );
}
else
{
TransposeFunc func = transposeTab[esz];
CV_Assert( func != 0 );
func( src.ptr(), src.step, dst.ptr(), dst.step, src.size() );
}
}
void transposeND(InputArray src_, const std::vector<int>& order, OutputArray dst_)
{
Mat inp = src_.getMat();
CV_Assert(inp.isContinuous());
CV_CheckEQ(inp.channels(), 1, "Input array should be single-channel");
CV_CheckEQ(order.size(), static_cast<size_t>(inp.dims), "Number of dimensions shouldn't change");
auto order_ = order;
std::sort(order_.begin(), order_.end());
for (size_t i = 0; i < order_.size(); ++i)
{
CV_CheckEQ(static_cast<size_t>(order_[i]), i, "New order should be a valid permutation of the old one");
}
std::vector<int> newShape(order.size());
for (size_t i = 0; i < order.size(); ++i)
{
newShape[i] = inp.size[order[i]];
}
dst_.create(static_cast<int>(newShape.size()), newShape.data(), inp.type());
Mat out = dst_.getMat();
CV_Assert(out.isContinuous());
CV_Assert(inp.data != out.data);
int continuous_idx = 0;
for (int i = static_cast<int>(order.size()) - 1; i >= 0; --i)
{
if (order[i] != i)
{
continuous_idx = i + 1;
break;
}
}
size_t continuous_size = continuous_idx == 0 ? out.total() : out.step1(continuous_idx - 1);
size_t outer_size = out.total() / continuous_size;
std::vector<size_t> steps(order.size());
for (int i = 0; i < static_cast<int>(steps.size()); ++i)
{
steps[i] = inp.step1(order[i]);
}
auto* src = inp.ptr<const unsigned char>();
auto* dst = out.ptr<unsigned char>();
size_t src_offset = 0;
size_t es = out.elemSize();
for (size_t i = 0; i < outer_size; ++i)
{
std::memcpy(dst, src + es * src_offset, es * continuous_size);
dst += es * continuous_size;
for (int j = continuous_idx - 1; j >= 0; --j)
{
src_offset += steps[j];
if ((src_offset / steps[j]) % out.size[j] != 0)
{
break;
}
src_offset -= steps[j] * out.size[j];
}
}
}
#if CV_SIMD128
template<typename V> CV_ALWAYS_INLINE void flipHoriz_single( const uchar* src, size_t sstep, uchar* dst, size_t dstep, Size size, size_t esz )
{
typedef typename V::lane_type T;
int end = (int)(size.width*esz);
int width = (end + 1)/2;
int width_1 = width & -v_uint8x16::nlanes;
int i, j;
#if CV_STRONG_ALIGNMENT
CV_Assert(isAligned<sizeof(T)>(src, dst));
#endif
for( ; size.height--; src += sstep, dst += dstep )
{
for( i = 0, j = end; i < width_1; i += v_uint8x16::nlanes, j -= v_uint8x16::nlanes )
{
V t0, t1;
t0 = v_load((T*)((uchar*)src + i));
t1 = v_load((T*)((uchar*)src + j - v_uint8x16::nlanes));
t0 = v_reverse(t0);
t1 = v_reverse(t1);
v_store((T*)(dst + j - v_uint8x16::nlanes), t0);
v_store((T*)(dst + i), t1);
}
if (isAligned<sizeof(T)>(src, dst))
{
for ( ; i < width; i += sizeof(T), j -= sizeof(T) )
{
T t0, t1;
t0 = *((T*)((uchar*)src + i));
t1 = *((T*)((uchar*)src + j - sizeof(T)));
*((T*)(dst + j - sizeof(T))) = t0;
*((T*)(dst + i)) = t1;
}
}
else
{
for ( ; i < width; i += sizeof(T), j -= sizeof(T) )
{
for (int k = 0; k < (int)sizeof(T); k++)
{
uchar t0, t1;
t0 = *((uchar*)src + i + k);
t1 = *((uchar*)src + j + k - sizeof(T));
*(dst + j + k - sizeof(T)) = t0;
*(dst + i + k) = t1;
}
}
}
}
}
template<typename T1, typename T2> CV_ALWAYS_INLINE void flipHoriz_double( const uchar* src, size_t sstep, uchar* dst, size_t dstep, Size size, size_t esz )
{
int end = (int)(size.width*esz);
int width = (end + 1)/2;
#if CV_STRONG_ALIGNMENT
CV_Assert(isAligned<sizeof(T1)>(src, dst));
CV_Assert(isAligned<sizeof(T2)>(src, dst));
#endif
for( ; size.height--; src += sstep, dst += dstep )
{
for ( int i = 0, j = end; i < width; i += sizeof(T1) + sizeof(T2), j -= sizeof(T1) + sizeof(T2) )
{
T1 t0, t1;
T2 t2, t3;
t0 = *((T1*)((uchar*)src + i));
t2 = *((T2*)((uchar*)src + i + sizeof(T1)));
t1 = *((T1*)((uchar*)src + j - sizeof(T1) - sizeof(T2)));
t3 = *((T2*)((uchar*)src + j - sizeof(T2)));
*((T1*)(dst + j - sizeof(T1) - sizeof(T2))) = t0;
*((T2*)(dst + j - sizeof(T2))) = t2;
*((T1*)(dst + i)) = t1;
*((T2*)(dst + i + sizeof(T1))) = t3;
}
}
}
#endif
static void
flipHoriz( const uchar* src, size_t sstep, uchar* dst, size_t dstep, Size size, size_t esz )
{
#if CV_SIMD
#if CV_STRONG_ALIGNMENT
size_t alignmentMark = ((size_t)src)|((size_t)dst)|sstep|dstep;
#endif
if (esz == 2 * v_uint8x16::nlanes)
{
int end = (int)(size.width*esz);
int width = end/2;
for( ; size.height--; src += sstep, dst += dstep )
{
for( int i = 0, j = end - 2 * v_uint8x16::nlanes; i < width; i += 2 * v_uint8x16::nlanes, j -= 2 * v_uint8x16::nlanes )
{
#if CV_SIMD256
v_uint8x32 t0, t1;
t0 = v256_load((uchar*)src + i);
t1 = v256_load((uchar*)src + j);
v_store(dst + j, t0);
v_store(dst + i, t1);
#else
v_uint8x16 t0, t1, t2, t3;
t0 = v_load((uchar*)src + i);
t1 = v_load((uchar*)src + i + v_uint8x16::nlanes);
t2 = v_load((uchar*)src + j);
t3 = v_load((uchar*)src + j + v_uint8x16::nlanes);
v_store(dst + j, t0);
v_store(dst + j + v_uint8x16::nlanes, t1);
v_store(dst + i, t2);
v_store(dst + i + v_uint8x16::nlanes, t3);
#endif
}
}
}
else if (esz == v_uint8x16::nlanes)
{
int end = (int)(size.width*esz);
int width = end/2;
for( ; size.height--; src += sstep, dst += dstep )
{
for( int i = 0, j = end - v_uint8x16::nlanes; i < width; i += v_uint8x16::nlanes, j -= v_uint8x16::nlanes )
{
v_uint8x16 t0, t1;
t0 = v_load((uchar*)src + i);
t1 = v_load((uchar*)src + j);
v_store(dst + j, t0);
v_store(dst + i, t1);
}
}
}
else if (esz == 8
#if CV_STRONG_ALIGNMENT
&& isAligned<sizeof(uint64)>(alignmentMark)
#endif
)
{
flipHoriz_single<v_uint64x2>(src, sstep, dst, dstep, size, esz);
}
else if (esz == 4
#if CV_STRONG_ALIGNMENT
&& isAligned<sizeof(unsigned)>(alignmentMark)
#endif
)
{
flipHoriz_single<v_uint32x4>(src, sstep, dst, dstep, size, esz);
}
else if (esz == 2
#if CV_STRONG_ALIGNMENT
&& isAligned<sizeof(ushort)>(alignmentMark)
#endif
)
{
flipHoriz_single<v_uint16x8>(src, sstep, dst, dstep, size, esz);
}
else if (esz == 1)
{
flipHoriz_single<v_uint8x16>(src, sstep, dst, dstep, size, esz);
}
else if (esz == 24
#if CV_STRONG_ALIGNMENT
&& isAligned<sizeof(uint64_t)>(alignmentMark)
#endif
)
{
int end = (int)(size.width*esz);
int width = (end + 1)/2;
for( ; size.height--; src += sstep, dst += dstep )
{
for ( int i = 0, j = end; i < width; i += v_uint8x16::nlanes + sizeof(uint64_t), j -= v_uint8x16::nlanes + sizeof(uint64_t) )
{
v_uint8x16 t0, t1;
uint64_t t2, t3;
t0 = v_load((uchar*)src + i);
t2 = *((uint64_t*)((uchar*)src + i + v_uint8x16::nlanes));
t1 = v_load((uchar*)src + j - v_uint8x16::nlanes - sizeof(uint64_t));
t3 = *((uint64_t*)((uchar*)src + j - sizeof(uint64_t)));
v_store(dst + j - v_uint8x16::nlanes - sizeof(uint64_t), t0);
*((uint64_t*)(dst + j - sizeof(uint64_t))) = t2;
v_store(dst + i, t1);
*((uint64_t*)(dst + i + v_uint8x16::nlanes)) = t3;
}
}
}
#if !CV_STRONG_ALIGNMENT
else if (esz == 12)
{
flipHoriz_double<uint64_t,uint>(src, sstep, dst, dstep, size, esz);
}
else if (esz == 6)
{
flipHoriz_double<uint,ushort>(src, sstep, dst, dstep, size, esz);
}
else if (esz == 3)
{
flipHoriz_double<ushort,uchar>(src, sstep, dst, dstep, size, esz);
}
#endif
else
#endif // CV_SIMD
{
int i, j, limit = (int)(((size.width + 1)/2)*esz);
AutoBuffer<int> _tab(size.width*esz);
int* tab = _tab.data();
for( i = 0; i < size.width; i++ )
for( size_t k = 0; k < esz; k++ )
tab[i*esz + k] = (int)((size.width - i - 1)*esz + k);
for( ; size.height--; src += sstep, dst += dstep )
{
for( i = 0; i < limit; i++ )
{
j = tab[i];
uchar t0 = src[i], t1 = src[j];
dst[i] = t1; dst[j] = t0;
}
}
}
}
static void
flipVert( const uchar* src0, size_t sstep, uchar* dst0, size_t dstep, Size size, size_t esz )
{
const uchar* src1 = src0 + (size.height - 1)*sstep;
uchar* dst1 = dst0 + (size.height - 1)*dstep;
size.width *= (int)esz;
for( int y = 0; y < (size.height + 1)/2; y++, src0 += sstep, src1 -= sstep,
dst0 += dstep, dst1 -= dstep )
{
int i = 0;
#if CV_SIMD
#if CV_STRONG_ALIGNMENT
if (isAligned<sizeof(int)>(src0, src1, dst0, dst1))
#endif
{
for (; i <= size.width - CV_SIMD_WIDTH; i += CV_SIMD_WIDTH)
{
v_int32 t0 = vx_load((int*)(src0 + i));
v_int32 t1 = vx_load((int*)(src1 + i));
v_store((int*)(dst0 + i), t1);
v_store((int*)(dst1 + i), t0);
}
}
#if CV_STRONG_ALIGNMENT
else
{
for (; i <= size.width - CV_SIMD_WIDTH; i += CV_SIMD_WIDTH)
{
v_uint8 t0 = vx_load(src0 + i);
v_uint8 t1 = vx_load(src1 + i);
v_store(dst0 + i, t1);
v_store(dst1 + i, t0);
}
}
#endif
#endif
if (isAligned<sizeof(int)>(src0, src1, dst0, dst1))
{
for( ; i <= size.width - 16; i += 16 )
{
int t0 = ((int*)(src0 + i))[0];
int t1 = ((int*)(src1 + i))[0];
((int*)(dst0 + i))[0] = t1;
((int*)(dst1 + i))[0] = t0;
t0 = ((int*)(src0 + i))[1];
t1 = ((int*)(src1 + i))[1];
((int*)(dst0 + i))[1] = t1;
((int*)(dst1 + i))[1] = t0;
t0 = ((int*)(src0 + i))[2];
t1 = ((int*)(src1 + i))[2];
((int*)(dst0 + i))[2] = t1;
((int*)(dst1 + i))[2] = t0;
t0 = ((int*)(src0 + i))[3];
t1 = ((int*)(src1 + i))[3];
((int*)(dst0 + i))[3] = t1;
((int*)(dst1 + i))[3] = t0;
}
for( ; i <= size.width - 4; i += 4 )
{
int t0 = ((int*)(src0 + i))[0];
int t1 = ((int*)(src1 + i))[0];
((int*)(dst0 + i))[0] = t1;
((int*)(dst1 + i))[0] = t0;
}
}
for( ; i < size.width; i++ )
{
uchar t0 = src0[i];
uchar t1 = src1[i];
dst0[i] = t1;
dst1[i] = t0;
}
}
}
#ifdef HAVE_OPENCL
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);
const ocl::Device & dev = ocl::Device::getDefault();
int type = _src.type(), depth = CV_MAT_DEPTH(type), cn = CV_MAT_CN(type),
flipType, kercn = std::min(ocl::predictOptimalVectorWidth(_src, _dst), 4);
bool doubleSupport = dev.doubleFPConfig() > 0;
if (!doubleSupport && depth == CV_64F)
kercn = cn;
if (cn > 4)
return false;
const char * kernelName;
if (flipCode == 0)
kernelName = "arithm_flip_rows", flipType = FLIP_ROWS;
else if (flipCode > 0)
kernelName = "arithm_flip_cols", flipType = FLIP_COLS;
else
kernelName = "arithm_flip_rows_cols", flipType = FLIP_BOTH;
int pxPerWIy = (dev.isIntel() && (dev.type() & ocl::Device::TYPE_GPU)) ? 4 : 1;
kercn = (cn!=3 || flipType == FLIP_ROWS) ? std::max(kercn, cn) : cn;
ocl::Kernel k(kernelName, ocl::core::flip_oclsrc,
format( "-D T=%s -D T1=%s -D DEPTH=%d -D cn=%d -D PIX_PER_WI_Y=%d -D kercn=%d",
kercn != cn ? ocl::typeToStr(CV_MAKE_TYPE(depth, kercn)) : ocl::vecopTypeToStr(CV_MAKE_TYPE(depth, kercn)),
kercn != cn ? ocl::typeToStr(depth) : ocl::vecopTypeToStr(depth), depth, cn, pxPerWIy, kercn));
if (k.empty())
return false;
Size size = _src.size();
_dst.create(size, type);
UMat src = _src.getUMat(), dst = _dst.getUMat();
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, cn, kercn), rows, cols);
size_t maxWorkGroupSize = dev.maxWorkGroupSize();
CV_Assert(maxWorkGroupSize % 4 == 0);
size_t globalsize[2] = { (size_t)cols, ((size_t)rows + pxPerWIy - 1) / pxPerWIy },
localsize[2] = { maxWorkGroupSize / 4, 4 };
return k.run(2, globalsize, (flipType == FLIP_COLS) && !dev.isIntel() ? localsize : NULL, false);
}
#endif
#if defined HAVE_IPP
static bool ipp_flip(Mat &src, Mat &dst, int flip_mode)
{
#ifdef HAVE_IPP_IW
CV_INSTRUMENT_REGION_IPP();
// Details: https://github.com/opencv/opencv/issues/12943
if (flip_mode <= 0 /* swap rows */
&& cv::ipp::getIppTopFeatures() != ippCPUID_SSE42
&& (int64_t)(src.total()) * src.elemSize() >= CV_BIG_INT(0x80000000)/*2Gb*/
)
return false;
IppiAxis ippMode;
if(flip_mode < 0)
ippMode = ippAxsBoth;
else if(flip_mode == 0)
ippMode = ippAxsHorizontal;
else
ippMode = ippAxsVertical;
try
{
::ipp::IwiImage iwSrc = ippiGetImage(src);
::ipp::IwiImage iwDst = ippiGetImage(dst);
CV_INSTRUMENT_FUN_IPP(::ipp::iwiMirror, iwSrc, iwDst, ippMode);
}
catch(const ::ipp::IwException &)
{
return false;
}
return true;
#else
CV_UNUSED(src); CV_UNUSED(dst); CV_UNUSED(flip_mode);
return false;
#endif
}
#endif
void flip( InputArray _src, OutputArray _dst, int flip_mode )
{
CV_INSTRUMENT_REGION();
CV_Assert( _src.dims() <= 2 );
Size size = _src.size();
if (flip_mode < 0)
{
if (size.width == 1)
flip_mode = 0;
if (size.height == 1)
flip_mode = 1;
}
if ((size.width == 1 && flip_mode > 0) ||
(size.height == 1 && flip_mode == 0))
{
return _src.copyTo(_dst);
}
CV_OCL_RUN( _dst.isUMat(), ocl_flip(_src, _dst, flip_mode))
Mat src = _src.getMat();
int type = src.type();
_dst.create( size, type );
Mat dst = _dst.getMat();
CV_IPP_RUN_FAST(ipp_flip(src, dst, flip_mode));
size_t esz = CV_ELEM_SIZE(type);
if( flip_mode <= 0 )
flipVert( src.ptr(), src.step, dst.ptr(), dst.step, src.size(), esz );
else
flipHoriz( src.ptr(), src.step, dst.ptr(), dst.step, src.size(), esz );
if( flip_mode < 0 )
flipHoriz( dst.ptr(), dst.step, dst.ptr(), dst.step, dst.size(), esz );
}
void rotate(InputArray _src, OutputArray _dst, int rotateMode)
{
CV_Assert(_src.dims() <= 2);
switch (rotateMode)
{
case ROTATE_90_CLOCKWISE:
transpose(_src, _dst);
flip(_dst, _dst, 1);
break;
case ROTATE_180:
flip(_src, _dst, -1);
break;
case ROTATE_90_COUNTERCLOCKWISE:
transpose(_src, _dst);
flip(_dst, _dst, 0);
break;
default:
break;
}
}
} // namespace
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