| 42 | { |
| 43 | public: |
| 44 | void setup(TensorShape shape, |
| 45 | DataType data_type, |
| 46 | DataLayout data_layout, |
| 47 | InterpolationPolicy policy, |
| 48 | BorderMode border_mode, |
| 49 | SamplingPolicy sampling_policy) |
| 50 | { |
| 51 | constexpr float max_width = 8192.0f; |
| 52 | constexpr float max_height = 6384.0f; |
| 53 | |
| 54 | // Change shape in case of NHWC. |
| 55 | if (data_layout == DataLayout::NHWC) |
| 56 | { |
| 57 | permute(shape, PermutationVector(2U, 0U, 1U)); |
| 58 | } |
| 59 | |
| 60 | std::mt19937 generator(library->seed()); |
| 61 | std::uniform_real_distribution<float> distribution_float(0.25f, 3.0f); |
| 62 | float scale_x = distribution_float(generator); |
| 63 | float scale_y = distribution_float(generator); |
| 64 | |
| 65 | scale_x = ((shape.x() * scale_x) > max_width) ? (max_width / shape.x()) : scale_x; |
| 66 | scale_y = ((shape.y() * scale_y) > max_height) ? (max_height / shape.y()) : scale_y; |
| 67 | |
| 68 | std::uniform_int_distribution<uint8_t> distribution_u8(0, 255); |
| 69 | uint8_t constant_border_value = static_cast<uint8_t>(distribution_u8(generator)); |
| 70 | |
| 71 | const int idx_width = get_data_layout_dimension_index(data_layout, DataLayoutDimension::WIDTH); |
| 72 | const int idx_height = get_data_layout_dimension_index(data_layout, DataLayoutDimension::HEIGHT); |
| 73 | |
| 74 | TensorShape shape_scaled(shape); |
| 75 | shape_scaled.set(idx_width, shape[idx_width] * scale_x); |
| 76 | shape_scaled.set(idx_height, shape[idx_height] * scale_y); |
| 77 | |
| 78 | // Create tensors |
| 79 | src = create_tensor<TensorType>(shape, data_type); |
| 80 | dst = create_tensor<TensorType>(shape_scaled, data_type); |
| 81 | |
| 82 | // Create and configure function |
| 83 | scale_func.configure(&src, &dst, |
| 84 | ScaleKernelInfo{policy, border_mode, constant_border_value, sampling_policy, false}); |
| 85 | |
| 86 | // Allocate tensors |
| 87 | src.allocator()->allocate(); |
| 88 | dst.allocator()->allocate(); |
| 89 | } |
| 90 | |
| 91 | void run() |
| 92 | { |