Matteo Martincigh | a8d572d | 2019-02-07 17:51:09 +0000 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2017 Arm Ltd. All rights reserved. |
| 3 | // SPDX-License-Identifier: MIT |
| 4 | // |
| 5 | |
| 6 | #pragma once |
| 7 | |
| 8 | #include <armnn/Tensor.hpp> |
| 9 | #include <armnn/TypesUtils.hpp> |
| 10 | #include <armnn/ILayerVisitor.hpp> |
| 11 | |
| 12 | #include <utility> |
| 13 | #include <limits> |
| 14 | |
| 15 | #include <boost/assert.hpp> |
| 16 | |
| 17 | namespace armnn |
| 18 | { |
| 19 | |
Ferran Balaguer | b284565 | 2019-02-27 09:42:06 +0000 | [diff] [blame] | 20 | std::pair<float, int> ComputeQAsymmParams(int numBits, double min, double max); |
Matteo Martincigh | a8d572d | 2019-02-07 17:51:09 +0000 | [diff] [blame] | 21 | |
| 22 | template<typename srcType> |
| 23 | void Quantize(const srcType* src, uint8_t* dst, size_t numElements, float& scale, int& offset) |
| 24 | { |
| 25 | BOOST_ASSERT(src); |
| 26 | BOOST_ASSERT(dst); |
| 27 | |
| 28 | float min = std::numeric_limits<srcType>::max(); |
| 29 | float max = std::numeric_limits<srcType>::lowest(); |
| 30 | for (size_t i = 0; i < numElements; ++i) |
| 31 | { |
| 32 | min = std::min(min, src[i]); |
| 33 | max = std::max(max, src[i]); |
| 34 | } |
| 35 | |
| 36 | auto qParams = ComputeQAsymmParams(8, min, max); |
Ferran Balaguer | b284565 | 2019-02-27 09:42:06 +0000 | [diff] [blame] | 37 | scale = qParams.first; |
| 38 | offset = qParams.second; |
Matteo Martincigh | a8d572d | 2019-02-07 17:51:09 +0000 | [diff] [blame] | 39 | for (size_t i = 0; i < numElements; ++i) |
| 40 | { |
| 41 | dst[i] = armnn::Quantize<uint8_t>(src[i], scale, offset); |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | ConstTensor CreateQuantizedConst(const ConstTensor& tensor, std::vector<uint8_t>& backing); |
| 46 | |
| 47 | template <typename LayerContainer> |
| 48 | void VisitLayers(const LayerContainer& layerContainer, ILayerVisitor& visitor) |
| 49 | { |
| 50 | for (auto layer : layerContainer) |
| 51 | { |
| 52 | layer->Accept(visitor); |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | } // namespace armnn |