| // |
| // Copyright © 2017 Arm Ltd. All rights reserved. |
| // SPDX-License-Identifier: MIT |
| // |
| |
| #pragma once |
| |
| #include "RefWorkloadUtils.hpp" |
| #include <armnn/backends/WorkloadData.hpp> |
| #include <armnn/Tensor.hpp> |
| #include <armnn/utility/Assert.hpp> |
| |
| namespace armnn |
| { |
| |
| template <typename DataType> |
| void Splitter(const SplitterQueueDescriptor& data, |
| std::vector<ITensorHandle*> inputs, |
| std::vector<ITensorHandle*> outputs) |
| { |
| const TensorInfo& inputInfo0 = GetTensorInfo(inputs[0]); |
| |
| for (unsigned int index = 0; index < inputInfo0.GetNumElements(); ++index) |
| { |
| unsigned int indices[MaxNumOfTensorDimensions] = { 0 }; |
| |
| unsigned int indexRemainder = index; |
| unsigned int dimensionStride = inputInfo0.GetNumElements(); |
| |
| for (unsigned int i = 0; i<inputInfo0.GetNumDimensions(); i++) |
| { |
| dimensionStride /= inputInfo0.GetShape()[i]; |
| indices[i] = indexRemainder / dimensionStride; // Use integer division to round down. |
| indexRemainder -= indices[i] * dimensionStride; |
| } |
| |
| for (unsigned int viewIdx = 0; viewIdx < data.m_ViewOrigins.size(); ++viewIdx) |
| { |
| SplitterQueueDescriptor::ViewOrigin const& view = data.m_ViewOrigins[viewIdx]; |
| |
| //Split view extents are defined by the size of (the corresponding) input tensor. |
| const TensorInfo& outputInfo = GetTensorInfo(outputs[viewIdx]); |
| ARMNN_ASSERT(outputInfo.GetNumDimensions() == inputInfo0.GetNumDimensions()); |
| |
| // Check all dimensions to see if this element is inside the given input view. |
| bool insideView = true; |
| for (unsigned int i = 0; i<outputInfo.GetNumDimensions(); i++) |
| { |
| if (indices[i] < view.m_Origin[i]) |
| { |
| insideView = false; |
| } |
| if (indices[i] >= view.m_Origin[i] + outputInfo.GetShape()[i]) |
| { |
| insideView = false; |
| } |
| } |
| |
| if (insideView) |
| { |
| unsigned int outIndex = 0; |
| unsigned int dimensionStride = 1; |
| |
| for (unsigned int i = outputInfo.GetNumDimensions(); i-- > 0;) |
| { |
| outIndex += dimensionStride * (indices[i] - view.m_Origin[i]); |
| dimensionStride *= outputInfo.GetShape()[i]; |
| } |
| |
| //We are within the view, to copy input data to the output corresponding to this view. |
| DataType* outputData = GetOutputTensorData<DataType>(viewIdx, data); |
| ARMNN_ASSERT(outputData); |
| |
| const DataType* inputData = GetInputTensorData<DataType>(0, data); |
| ARMNN_ASSERT(inputData); |
| |
| outputData[outIndex] = inputData[index]; |
| } |
| } |
| } |
| } |
| |
| void Split(const SplitterQueueDescriptor& data, |
| std::vector<ITensorHandle*> inputs, |
| std::vector<ITensorHandle*> outputs); |
| } //namespace armnn |