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rotate_host.hpp
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1 /*
2  * Copyright (c) 2025 Advanced Micro Devices, Inc. All rights reserved.
3  * Permission is hereby granted, free of charge, to any person obtaining a copy
4  * of this software and associated documentation files (the "Software"), to deal
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7  * copies of the Software, and to permit persons to whom the Software is
8  * furnished to do so, subject to the following conditions:
9  *
10  * The above copyright notice and this permission notice shall be included in
11  * all copies or substantial portions of the Software.
12  *
13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
19  * THE SOFTWARE.
20  */
21 
22 #pragma once
23 
24 namespace Kernels::Host {
25 template <typename SrcWrapper, typename DstWrapper, typename MatWrapper>
26 void rotate(SrcWrapper src, DstWrapper dst, MatWrapper affineMat) {
27 #pragma omp parallel for
28  for (int b = 0; b < dst.batches(); b++) {
29  for (int y = 0; y < dst.height(); y++) {
30  for (int x = 0; x < dst.width(); x++) {
31  const auto xShift = x - affineMat[2];
32  const auto yShift = y - affineMat[5];
33 
34  const float srcX = static_cast<float>(xShift * affineMat[0] + yShift * -affineMat[1]);
35  const float srcY = static_cast<float>(xShift * -affineMat[3] + yShift * affineMat[4]);
36 
37  dst.at(b, y, x, 0) = src.at(b, srcY, srcX, 0);
38  }
39  }
40  }
41 }
42 } // namespace Kernels::Host
Definition: bilateral_filter_host.hpp:34
void rotate(SrcWrapper src, DstWrapper dst, MatWrapper affineMat)
Definition: rotate_host.hpp:26