Isabella Gottardi | 02aabcc | 2017-10-12 17:28:51 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2017 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 "Histogram.h" |
| 25 | |
| 26 | #include "Utils.h" |
| 27 | #include "arm_compute/core/Helpers.h" |
| 28 | |
| 29 | namespace arm_compute |
| 30 | { |
| 31 | namespace test |
| 32 | { |
| 33 | namespace validation |
| 34 | { |
| 35 | namespace reference |
| 36 | { |
| 37 | template <typename T> |
| 38 | SimpleTensor<uint32_t> histogram(const SimpleTensor<T> &src, size_t num_bins, int32_t offset, uint32_t range) |
| 39 | { |
| 40 | SimpleTensor<uint32_t> dst(TensorShape(num_bins), DataType::U32); |
| 41 | |
| 42 | // Clear the distribution |
| 43 | for(size_t element_idx = 0; element_idx < num_bins; ++element_idx) |
| 44 | { |
| 45 | dst[element_idx] = 0; |
| 46 | } |
| 47 | |
| 48 | // Create the histogram |
| 49 | for(int element_idx = 0; element_idx < src.num_elements(); ++element_idx) |
| 50 | { |
| 51 | if((offset <= src[element_idx]) && (src[element_idx] < (offset + range))) |
| 52 | { |
| 53 | const int index = (src[element_idx] - offset) * num_bins / range; |
| 54 | dst[index]++; |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | return dst; |
| 59 | } |
| 60 | |
| 61 | template SimpleTensor<uint32_t> histogram(const SimpleTensor<uint8_t> &src, size_t num_bins, int32_t offset, uint32_t range); |
| 62 | } // namespace reference |
| 63 | } // namespace validation |
| 64 | } // namespace test |
| 65 | } // namespace arm_compute |