void UMat::copyTo(OutputArray _dst) const { int dtype = _dst.type(); if( _dst.fixedType() && dtype != type() ) { CV_Assert( channels() == CV_MAT_CN(dtype) ); convertTo( _dst, dtype ); return; } if( empty() ) { _dst.release(); return; } size_t i, sz[CV_MAX_DIM], srcofs[CV_MAX_DIM], dstofs[CV_MAX_DIM], esz = elemSize(); for( i = 0; i < (size_t)dims; i++ ) sz[i] = size.p[i]; sz[dims-1] *= esz; ndoffset(srcofs); srcofs[dims-1] *= esz; _dst.create( dims, size.p, type() ); if( _dst.isUMat() ) { UMat dst = _dst.getUMat(); if( u == dst.u && dst.offset == offset ) return; if (u->currAllocator == dst.u->currAllocator) { dst.ndoffset(dstofs); dstofs[dims-1] *= esz; u->currAllocator->copy(u, dst.u, dims, sz, srcofs, step.p, dstofs, dst.step.p, false); return; } } Mat dst = _dst.getMat(); u->currAllocator->download(u, dst.data, dims, sz, srcofs, step.p, dst.step.p); }
/* dst = src */ void Mat::copyTo( OutputArray _dst ) const { int dtype = _dst.type(); if( _dst.fixedType() && dtype != type() ) { CV_Assert( channels() == CV_MAT_CN(dtype) ); convertTo( _dst, dtype ); return; } if( empty() ) { _dst.release(); return; } if( _dst.isUMat() ) { _dst.create( dims, size.p, type() ); UMat dst = _dst.getUMat(); size_t i, sz[CV_MAX_DIM], dstofs[CV_MAX_DIM], esz = elemSize(); for( i = 0; i < (size_t)dims; i++ ) sz[i] = size.p[i]; sz[dims-1] *= esz; dst.ndoffset(dstofs); dstofs[dims-1] *= esz; dst.u->currAllocator->upload(dst.u, data, dims, sz, dstofs, dst.step.p, step.p); return; } if( dims <= 2 ) { _dst.create( rows, cols, type() ); Mat dst = _dst.getMat(); if( data == dst.data ) return; if( rows > 0 && cols > 0 ) { const uchar* sptr = data; uchar* dptr = dst.data; Size sz = getContinuousSize(*this, dst); size_t len = sz.width*elemSize(); for( ; sz.height--; sptr += step, dptr += dst.step ) memcpy( dptr, sptr, len ); } return; } _dst.create( dims, size, type() ); Mat dst = _dst.getMat(); if( data == dst.data ) return; if( total() != 0 ) { const Mat* arrays[] = { this, &dst }; uchar* ptrs[2]; NAryMatIterator it(arrays, ptrs, 2); size_t sz = it.size*elemSize(); for( size_t i = 0; i < it.nplanes; i++, ++it ) memcpy(ptrs[1], ptrs[0], sz); } }