source/application/api/use_case/object_detection/include/YoloFastestModel.hpp

/*
 * Copyright (c) 2022 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 YOLO_FASTEST_MODEL_HPP
#define YOLO_FASTEST_MODEL_HPP

#include "Model.hpp"

namespace arm {
namespace app {
    namespace object_detection {
        extern const int originalImageSize;
        extern const int channelsImageDisplayed;
        /* NOTE: anchors are different for any given input model size, estimated during training
         * phase */
        extern const float anchor1[];
        extern const float anchor2[];
    } /* namespace object_detection */

    class YoloFastestModel : public Model {

    public:
        /* Indices for the expected model - based on input tensor shape */
        static constexpr uint32_t ms_inputRowsIdx     = 1;
        static constexpr uint32_t ms_inputColsIdx     = 2;
        static constexpr uint32_t ms_inputChannelsIdx = 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;

    private:
        /* Maximum number of individual operations that can be enlisted. */
        static constexpr int ms_maxOpCnt = 8;

        /* A mutable op resolver instance. */
        tflite::MicroMutableOpResolver<ms_maxOpCnt> m_opResolver;
    };

} /* namespace app */
} /* namespace arm */

#endif /* YOLO_FASTEST_MODEL_HPP */