2 // Copyright © 2017 Arm Ltd. All rights reserved.
3 // See LICENSE file in the project root for full license information.
8 #include "RefWorkloadUtils.hpp"
10 #include "backends/WorkloadData.hpp"
12 #include <armnn/Tensor.hpp>
14 #include <boost/assert.hpp>
19 template <typename DataType>
20 void Splitter(const SplitterQueueDescriptor& data)
22 const TensorInfo& inputInfo0 = GetTensorInfo(data.m_Inputs[0]);
24 for (unsigned int index = 0; index < inputInfo0.GetNumElements(); ++index)
26 unsigned int indices[MaxNumOfTensorDimensions];
28 unsigned int indexRemainder = index;
29 unsigned int dimensionStride = inputInfo0.GetNumElements();
31 for (unsigned int i = 0; i<inputInfo0.GetNumDimensions(); i++)
33 dimensionStride /= inputInfo0.GetShape()[i];
34 indices[i] = indexRemainder / dimensionStride; // use integer division to round down
35 indexRemainder -= indices[i] * dimensionStride;
38 for (unsigned int viewIdx = 0; viewIdx < data.m_ViewOrigins.size(); ++viewIdx)
40 SplitterQueueDescriptor::ViewOrigin const& view = data.m_ViewOrigins[viewIdx];
42 //split view extents are defined by the size of (the corresponding) input tensor
43 const TensorInfo& outputInfo = GetTensorInfo(data.m_Outputs[viewIdx]);
45 // check all dimensions to see if this element is inside the given input view
46 bool insideView = true;
47 for (unsigned int i = 0; i<outputInfo.GetNumDimensions(); i++)
49 if (indices[i] < view.m_Origin[i])
53 if (indices[i] >= view.m_Origin[i] + outputInfo.GetShape()[i])
61 unsigned int outIndex = 0;
62 unsigned int dimensionStride = 1;
64 for (unsigned int i = outputInfo.GetNumDimensions(); i-- > 0;)
66 outIndex += dimensionStride * (indices[i] - view.m_Origin[i]);
67 dimensionStride *= outputInfo.GetShape()[i];
70 //we are within the view, copy input data to the output corresponding to this view
71 DataType* outputData = GetOutputTensorData<DataType>(viewIdx, data);
72 BOOST_ASSERT(outputData);
74 const DataType* inputData = GetInputTensorData<DataType>(0, data);
75 BOOST_ASSERT(inputData);
77 outputData[outIndex] = inputData[index];