USB_UVC_DETECT/DataManager/DataPipe.h

#ifndef DATAPipe_H
#define DATAPipe_H

#include <queue>
#include <thread>
#include <memory>
#include <mutex>
#include <condition_variable>
#include <functional>
#include "DataPackage.h"

#define BUFFER_SIZE 30

template <typename T>
class DataPipe
{
public:
    DataPipe(size_t bufferSize = BUFFER_SIZE);
    ~DataPipe();

    void pushData(T *data);
    bool popData(T *&data);

private:
    size_t m_bufferSize;
    std::queue<T *> m_bufferQueue;
    std::mutex m_mtx;
    std::condition_variable m_cv;
};

template <typename T>
DataPipe<T>::DataPipe(size_t bufferSize) : m_bufferSize(bufferSize) {}

template <typename T>
DataPipe<T>::~DataPipe() {}

template <typename T>
void DataPipe<T>::pushData(T *data)
{
    std::unique_lock<std::mutex> lock(m_mtx);
    if (m_bufferQueue.size() >= m_bufferSize)
    {
        m_bufferQueue.pop();
    }
    m_bufferQueue.push(data);
    m_cv.notify_one();
}

template <typename T>
bool DataPipe<T>::popData(T *&data)
{
    std::unique_lock<std::mutex> lock(m_mtx);
    if (m_bufferQueue.empty())
    {
        return false;
    }
    data = m_bufferQueue.front();
    m_bufferQueue.pop();
    return true;
}

typedef std::shared_ptr<DataPipe<DataPackage>> DataPipePtr;

#endif // DATAPipe_H