yolo.h

/*
 * Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#ifndef _YOLO_H_
#define _YOLO_H_

#include "trt_utils.h"
#include "NvInfer.h"

#include <stdint.h>
#include <string>
#include <vector>
#include <memory>

/**
 * Holds all the file paths required to build a network.
 */
struct NetworkInfo
{
    std::string networkType;
    std::string configFilePath;
    std::string wtsFilePath;
    std::string deviceType;
    std::string inputBlobName;
};

/**
 * Holds information about an output tensor of the yolo network.
 */
struct TensorInfo
{
    std::string blobName;
    uint stride{0};
    uint gridSize{0};
    uint numClasses{0};
    uint numBBoxes{0};
    uint64_t volume{0};
    std::vector<uint> masks;
    std::vector<float> anchors;
    int bindingIndex{-1};
    float* hostBuffer{nullptr};
};

class Yolo
{
public:
    Yolo(const NetworkInfo& networkInfo, nvinfer1::IBuilder* builder);
    virtual ~Yolo();

    nvinfer1::ICudaEngine *createEngine ();

protected:
    //std::string m_EnginePath;
    const std::string m_NetworkType;
    const std::string m_ConfigFilePath;
    const std::string m_WtsFilePath;
    const std::string m_DeviceType;
    const std::string m_InputBlobName;
    std::vector<TensorInfo> m_OutputTensors;
    std::vector<std::map<std::string, std::string>> m_configBlocks;
    uint m_InputH;
    uint m_InputW;
    uint m_InputC;
    uint64_t m_InputSize;

    // TRT specific members
    nvinfer1::IBuilder* m_Builder;
    std::unique_ptr<YoloTinyMaxpoolPaddingFormula> m_TinyMaxpoolPaddingFormula;

private:
    nvinfer1::INetworkDefinition *createYoloNetwork (
        std::vector<float> &weights, std::vector<nvinfer1::Weights> &trtWeights);
    std::vector<std::map<std::string, std::string>> parseConfigFile (
        const std::string cfgFilePath);
    void parseConfigBlocks ();
    void destroyNetworkUtils (
        nvinfer1::INetworkDefinition *network,
        std::vector<nvinfer1::Weights>& trtWeights);
};

#endif // _YOLO_H_