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/*
* SPDX-FileCopyrightText: Copyright 2021 Arm Limited and/or its affiliates <open-source-office@arm.com>
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ASR_CLASSIFIER_HPP
#define ASR_CLASSIFIER_HPP
#include "Classifier.hpp"
namespace arm {
namespace app {
class AsrClassifier : public Classifier {
public:
/**
* @brief Gets the top N classification results from the
* output vector.
* @param[in] outputTensor Inference output tensor from an NN model.
* @param[out] vecResults A vector of classification results
* populated by this function.
* @param[in] labels Labels vector to match classified classes
* @param[in] topNCount Number of top classifications to pick.
* @param[in] use_softmax Whether softmax scaling should be applied to model output.
* @return true if successful, false otherwise.
**/
bool GetClassificationResults(TfLiteTensor* outputTensor,
std::vector<ClassificationResult>& vecResults,
const std::vector<std::string>& labels,
uint32_t topNCount, bool use_softmax = false) override;
private:
/**
* @brief Utility function that gets the top 1 classification results from the
* output tensor (vector of vector).
* @param[in] tensor Inference output tensor from an NN model.
* @param[out] vecResults Vector of classification results populated by this function.
* @param[in] labels Labels vector to match classified classes.
* @param[in] scale Quantization scale.
* @param[in] zeroPoint Quantization zero point.
* @return true if successful, false otherwise.
**/
template<typename T>
bool GetTopResults(TfLiteTensor* tensor,
std::vector<ClassificationResult>& vecResults,
const std::vector<std::string>& labels, double scale, double zeroPoint);
};
} /* namespace app */
} /* namespace arm */
#endif /* ASR_CLASSIFIER_HPP */
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