#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>                 /* exit() */
#include <sys/ioctl.h>              /* ioctl() */
#include <libv4lconvert.h>
#include <iostream>
#include <vector>

class WebcamTracker
{
    public:
        WebcamTracker();
        ~WebcamTracker();
        bool open(const char * device);
        void start();

    protected:
        void requestBuffers(int num);
        void mapBuffer(int i);
        void queueBuffer(int i);
        void beginStreaming();
        void endStreaming();
        void dequeueBuffer(v4l2_buffer * dqbuf);
        void unmapBuffer(int i);
        void freeBuffers();
        void setFormat();

        bool    m_open;
        int     m_fd;
        int     m_numbufs;
        void ** m_buffers;
        int *   m_lengths;
};