Michele Di Giorgio | 7217563 | 2018-05-01 16:52:00 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2018 ARM Limited. |
| 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all |
| 14 | * copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | #include "ChannelShuffle.h" |
| 25 | |
| 26 | #include "arm_compute/core/Types.h" |
| 27 | #include "tests/validation/Helpers.h" |
| 28 | |
| 29 | namespace arm_compute |
| 30 | { |
| 31 | namespace test |
| 32 | { |
| 33 | namespace validation |
| 34 | { |
| 35 | namespace reference |
| 36 | { |
| 37 | // Refence implementation for channel shuffle taken from https://github.com/pytorch/pytorch/blob/master/caffe2/operators/channel_shuffle_op.h |
| 38 | template <typename T> |
| 39 | SimpleTensor<T> channel_shuffle(const SimpleTensor<T> &src, int num_groups) |
| 40 | { |
| 41 | // Create reference |
| 42 | SimpleTensor<T> dst{ src.shape(), src.data_type(), src.num_channels(), src.fixed_point_position(), src.quantization_info() }; |
| 43 | |
| 44 | const int M = src.shape()[0]; |
| 45 | const int N = src.shape()[1]; |
| 46 | const int num_channels = src.shape()[2]; |
| 47 | const int batches = src.shape()[3]; |
| 48 | const int MxN = M * N; |
| 49 | const int channels_in_group = num_channels / num_groups; |
| 50 | |
| 51 | const T *src_ref = src.data(); |
| 52 | T *dst_ref = dst.data(); |
| 53 | |
| 54 | for(int n = 0; n < batches; ++n) |
| 55 | { |
| 56 | for(int g = 0; g < num_groups; ++g) |
| 57 | { |
| 58 | // Gather the group g block (of size channels_in_group * MxN) from output channels |
| 59 | // g + 0 * G, g + 1 * G, g + 2 * G, g + G * (K - 1) etc. |
Michele Di Giorgio | efac7c6 | 2018-05-16 00:02:35 +0100 | [diff] [blame] | 60 | const T *src_ptr = src_ref + g * channels_in_group * MxN + n * num_channels * MxN; |
| 61 | T *dst_ptr = dst_ref + g * MxN + n * num_channels * MxN; |
Michele Di Giorgio | 7217563 | 2018-05-01 16:52:00 +0100 | [diff] [blame] | 62 | for(int i = 0; i < channels_in_group; ++i) |
| 63 | { |
Michele Di Giorgio | efac7c6 | 2018-05-16 00:02:35 +0100 | [diff] [blame] | 64 | std::copy(src_ptr + i * MxN, |
| 65 | src_ptr + (i + 1) * MxN, |
| 66 | dst_ptr + i * num_groups * MxN); |
Michele Di Giorgio | 7217563 | 2018-05-01 16:52:00 +0100 | [diff] [blame] | 67 | } |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | return dst; |
| 72 | } |
| 73 | |
| 74 | template SimpleTensor<uint8_t> channel_shuffle(const SimpleTensor<uint8_t> &src, int num_groups); |
| 75 | template SimpleTensor<uint16_t> channel_shuffle(const SimpleTensor<uint16_t> &src, int num_groups); |
| 76 | template SimpleTensor<uint32_t> channel_shuffle(const SimpleTensor<uint32_t> &src, int num_groups); |
| 77 | template SimpleTensor<half> channel_shuffle(const SimpleTensor<half> &src, int num_groups); |
| 78 | template SimpleTensor<float> channel_shuffle(const SimpleTensor<float> &src, int num_groups); |
| 79 | } // namespace reference |
| 80 | } // namespace validation |
| 81 | } // namespace test |
| 82 | } // namespace arm_compute |