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//
// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include "Decoder.hpp"
std::pair<int, float> kws::Decoder::decodeOutput(std::vector<int8_t>& modelOutput)
{
std::vector<float> dequantisedOutput;
//Normalise vector values into new vector
for (auto& value : modelOutput)
{
float normalisedModelOutput = this->quantisationScale * (static_cast<float >(value) -
static_cast<float >(this->quantisationOffset));
dequantisedOutput.push_back(normalisedModelOutput);
}
//Get largest value in modelOutput
const std::vector<float>::iterator& maxElementIterator = std::max_element(dequantisedOutput.begin(),
dequantisedOutput.end());
//Find the labelMapIndex of the largest value which corresponds to a key in a label map
int labelMapIndex = static_cast<int>(std::distance(dequantisedOutput.begin(), maxElementIterator));
//Round to two DP
float maxModelOutputProbability = std::roundf((*maxElementIterator) * 100) / 100;
return std::make_pair(labelMapIndex, maxModelOutputProbability);
}
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