ivideosource.h

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#pragma once

#include "videoframe.h"
#include "except.h"
#include "iobservable.h"
#include "macros.h"

class IVideoSource : public gg::IObservable
{
public:
    virtual ~IVideoSource()
    {

    }

public:
    virtual gg::ColourSpace get_colour()
    {
        return _colour;
    }

    virtual bool get_frame_dimensions(int & width, int & height) = 0;

    virtual bool get_frame(gg::VideoFrame & frame) = 0;

    virtual double get_frame_rate() = 0;

    virtual void set_sub_frame(int x, int y, int width, int height) = 0;

    virtual void get_full_frame() { _get_sub_frame = false; }

    void set_number_of_frames_to_burn(unsigned int burn_num)
    {
        _num_burn_frames = burn_num;
    }

    unsigned int get_number_of_frames_to_burn()
    {
        return _num_burn_frames;
    }

protected:
    IVideoSource()
        :_get_sub_frame(false), _num_burn_frames(0)
    {}

    IVideoSource(gg::ColourSpace colour)
        : _colour(colour)
        , _get_sub_frame(false)
        , _num_burn_frames(0)
    {

    }

    gg::ColourSpace _colour;

    bool            _get_sub_frame;

    unsigned int    _num_burn_frames;

protected:
    DISALLOW_COPY_AND_ASSIGNMENT(IVideoSource);
};