| // |
| // Copyright © 2019 Arm Ltd. All rights reserved. |
| // SPDX-License-Identifier: MIT |
| // |
| |
| #pragma once |
| |
| #include <armnn/Types.hpp> |
| #include <armnn/Tensor.hpp> |
| |
| #include <armnn/utility/Assert.hpp> |
| |
| namespace armnnUtils |
| { |
| |
| /// Provides access to the appropriate indexes for Channels, Height and Width based on DataLayout |
| class DataLayoutIndexed |
| { |
| public: |
| DataLayoutIndexed(armnn::DataLayout dataLayout); |
| |
| armnn::DataLayout GetDataLayout() const { return m_DataLayout; } |
| unsigned int GetChannelsIndex() const { return m_ChannelsIndex; } |
| unsigned int GetHeightIndex() const { return m_HeightIndex; } |
| unsigned int GetWidthIndex() const { return m_WidthIndex; } |
| unsigned int GetDepthIndex() const { return m_DepthIndex; } |
| |
| inline unsigned int GetIndex(const armnn::TensorShape& shape, |
| unsigned int batchIndex, unsigned int channelIndex, |
| unsigned int heightIndex, unsigned int widthIndex) const |
| { |
| ARMNN_ASSERT( batchIndex < shape[0] || ( shape[0] == 0 && batchIndex == 0 ) ); |
| ARMNN_ASSERT( channelIndex < shape[m_ChannelsIndex] || |
| ( shape[m_ChannelsIndex] == 0 && channelIndex == 0) ); |
| ARMNN_ASSERT( heightIndex < shape[m_HeightIndex] || |
| ( shape[m_HeightIndex] == 0 && heightIndex == 0) ); |
| ARMNN_ASSERT( widthIndex < shape[m_WidthIndex] || |
| ( shape[m_WidthIndex] == 0 && widthIndex == 0) ); |
| |
| /// Offset the given indices appropriately depending on the data layout |
| switch (m_DataLayout) |
| { |
| case armnn::DataLayout::NHWC: |
| batchIndex *= shape[1] * shape[2] * shape[3]; // batchIndex *= heightIndex * widthIndex * channelIndex |
| heightIndex *= shape[m_WidthIndex] * shape[m_ChannelsIndex]; |
| widthIndex *= shape[m_ChannelsIndex]; |
| /// channelIndex stays unchanged |
| break; |
| case armnn::DataLayout::NCHW: |
| default: |
| batchIndex *= shape[1] * shape[2] * shape[3]; // batchIndex *= heightIndex * widthIndex * channelIndex |
| channelIndex *= shape[m_HeightIndex] * shape[m_WidthIndex]; |
| heightIndex *= shape[m_WidthIndex]; |
| /// widthIndex stays unchanged |
| break; |
| } |
| |
| /// Get the value using the correct offset |
| return batchIndex + channelIndex + heightIndex + widthIndex; |
| } |
| |
| private: |
| armnn::DataLayout m_DataLayout; |
| unsigned int m_ChannelsIndex; |
| unsigned int m_HeightIndex; |
| unsigned int m_WidthIndex; |
| unsigned int m_DepthIndex; |
| }; |
| |
| /// Equality methods |
| bool operator==(const armnn::DataLayout& dataLayout, const DataLayoutIndexed& indexed); |
| bool operator==(const DataLayoutIndexed& indexed, const armnn::DataLayout& dataLayout); |
| |
| } // namespace armnnUtils |