| 15 | { |
| 16 | |
| 17 | class TransposeLoop |
| 18 | { |
| 19 | public: |
| 20 | using size_type = unsigned int; |
| 21 | |
| 22 | TransposeLoop(const armnn::TensorShape& srcShape, const armnn::PermutationVector& mappings) |
| 23 | : m_SrcShape(srcShape) |
| 24 | { |
| 25 | if (srcShape.GetNumDimensions() != mappings.GetSize()) |
| 26 | { |
| 27 | std::stringstream msg; |
| 28 | msg << "Transpose: Number of shape dimensions (" << srcShape.GetNumDimensions() << |
| 29 | ") does not match the size of the mappings (" << mappings.GetSize() << ")"; |
| 30 | throw armnn::InvalidArgumentException(msg.str()); |
| 31 | } |
| 32 | |
| 33 | const size_type numDims = srcShape.GetNumDimensions(); |
| 34 | |
| 35 | size_type srcStride = 1U; |
| 36 | size_type dstStride = 1U; |
| 37 | |
| 38 | for (size_type i = numDims - 1U, k = 0U; k < numDims; ++k, --i) |
| 39 | { |
| 40 | m_SrcStrides[i] = srcStride; |
| 41 | m_DstStrides[mappings[i]] = dstStride; |
| 42 | |
| 43 | srcStride *= srcShape[i]; |
| 44 | dstStride *= srcShape[mappings[i]]; |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | void Unroll(const void* srcData, void* dstData, size_t dataTypeSize) |
| 49 | { |
| 50 | if (srcData == nullptr) |
| 51 | { |
| 52 | throw armnn::Exception("Transpose: Source Data pointer is null"); |
| 53 | } |
| 54 | if (dstData == nullptr) |
| 55 | { |
| 56 | throw armnn::Exception("Transpose: Destination Data pointer is null"); |
| 57 | } |
| 58 | if (dataTypeSize == 0) |
| 59 | { |
| 60 | throw armnn::Exception("Transpose: dataTypeSize is zero"); |
| 61 | } |
| 62 | |
| 63 | const unsigned char* srcDataPtr = reinterpret_cast<const unsigned char*>(srcData); |
| 64 | unsigned char* dstDataPtr = reinterpret_cast<unsigned char*>(dstData); |
| 65 | |
| 66 | const unsigned char* const srcEndPtr = srcDataPtr + m_SrcShape.GetNumElements() * dataTypeSize; |
| 67 | unsigned char* const dstEndPtr = dstDataPtr + m_SrcShape.GetNumElements() * dataTypeSize; |
| 68 | |
| 69 | Unroll(0, srcDataPtr, dstDataPtr, srcEndPtr, dstEndPtr, dataTypeSize); |
| 70 | } |
| 71 | |
| 72 | private: |
| 73 | void Unroll(size_type dimension, |
| 74 | const unsigned char* srcData, unsigned char* dstData, |