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/*
* Copyright (c) 2021 Arm Limited. All rights reserved.
* 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 KWS_ASR_WAV2LETTER_MODEL_HPP
#define KWS_ASR_WAV2LETTER_MODEL_HPP
#include "Model.hpp"
namespace arm {
namespace app {
namespace asr {
extern const int g_FrameLength;
extern const int g_FrameStride;
extern const float g_ScoreThreshold;
extern const int g_ctxLen;
} /* namespace asr */
} /* namespace app */
} /* namespace arm */
namespace arm {
namespace app {
class Wav2LetterModel : public Model {
public:
/* Indices for the expected model - based on input and output tensor shapes */
static constexpr uint32_t ms_inputRowsIdx = 1;
static constexpr uint32_t ms_inputColsIdx = 2;
static constexpr uint32_t ms_outputRowsIdx = 2;
static constexpr uint32_t ms_outputColsIdx = 3;
protected:
/** @brief Gets the reference to op resolver interface class. */
const tflite::MicroOpResolver& GetOpResolver() override;
/** @brief Adds operations to the op resolver instance. */
bool EnlistOperations() override;
const uint8_t* ModelPointer() override;
size_t ModelSize() override;
private:
/* Maximum number of individual operations that can be enlisted. */
static constexpr int _ms_maxOpCnt = 5;
/* A mutable op resolver instance. */
tflite::MicroMutableOpResolver<_ms_maxOpCnt> _m_opResolver;
};
} /* namespace app */
} /* namespace arm */
#endif /* KWS_ASR_WAV2LETTER_MODEL_HPP */
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