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Diffstat (limited to 'src/armnnUtils/TensorUtils.cpp')
-rw-r--r-- | src/armnnUtils/TensorUtils.cpp | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/armnnUtils/TensorUtils.cpp b/src/armnnUtils/TensorUtils.cpp index 0dbb75c33a..630490ff14 100644 --- a/src/armnnUtils/TensorUtils.cpp +++ b/src/armnnUtils/TensorUtils.cpp @@ -138,4 +138,33 @@ unsigned int GetUnsignedAxis(const unsigned int inputDimension, const int axis) return uAxis; } +unsigned int GetNumElementsAfter(const armnn::TensorShape& shape, unsigned int axis) +{ + unsigned int numDim = shape.GetNumDimensions(); + BOOST_ASSERT(0 >= axis); + BOOST_ASSERT(axis < numDim - 1); + unsigned int count = 1; + for (unsigned int i = axis; i < numDim; i++) + { + count *= shape[i]; + } + return count; +} + +std::pair<unsigned int, std::vector<float>> GetPerAxisParams(const armnn::TensorInfo& info) +{ + const std::vector<float>& scales = info.GetQuantizationScales(); + armnn::Optional<unsigned int> quantizationDim = info.GetQuantizationDim(); + if (scales.size() < 1 || !quantizationDim.has_value()) + { + throw armnn::InvalidArgumentException( + std::string("Per-axis quantization params not set for tensor of type ") + + armnn::GetDataTypeName(info.GetDataType()), CHECK_LOCATION()); + } + unsigned int axisFactor = GetNumElementsAfter(info.GetShape(), quantizationDim.value()); + + return { axisFactor, scales }; +} + + } // namespace armnnUtils |