hyperion.ng/include/grabber/QtGrabber.h

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#pragma once
#include <QObject>
// Hyperion-utils includes
#include <utils/ColorRgb.h>
#include <hyperion/Grabber.h>
class QScreen;
///
/// @brief The platform capture implementation based on QT API
///
class QtGrabber : public Grabber
{
public:
QtGrabber(int cropLeft, int cropRight, int cropTop, int cropBottom, int pixelDecimation, int display);
~QtGrabber() override;
///
/// Captures a single snapshot of the display and writes the data to the given image. The
/// provided image should have the same dimensions as the configured values (_width and
/// _height)
///
/// @param[out] image The snapped screenshot (should be initialized with correct width and
/// height)
///
virtual int grabFrame(Image<ColorRgb> & image);
///
/// @brief Set a new video mode
///
virtual void setVideoMode(VideoMode mode);
///
/// @brief Apply new width/height values, overwrite Grabber.h implementation as qt doesn't use width/height, just pixelDecimation to calc dimensions
///
virtual bool setWidthHeight(int width, int height) { return true; };
///
/// @brief Apply new pixelDecimation
///
virtual void setPixelDecimation(int pixelDecimation);
///
/// Set the crop values
/// @param cropLeft Left pixel crop
/// @param cropRight Right pixel crop
/// @param cropTop Top pixel crop
/// @param cropBottom Bottom pixel crop
///
virtual void setCropping(unsigned cropLeft, unsigned cropRight, unsigned cropTop, unsigned cropBottom);
///
/// @brief Apply display index
///
virtual void setDisplayIndex(int index);
private slots:
///
/// @brief is called whenever the current _screen changes it's geometry
/// @param geo The new geometry
///
void geometryChanged(const QRect &geo);
private:
///
/// @brief Setup a new capture display, will free the previous one
/// @return True on success, false if no display is found
///
bool setupDisplay();
///
/// @brief Is called whenever we need new screen dimension calculations based on window geometry
///
int updateScreenDimensions(const bool& force);
///
/// @brief free the _screen pointer
///
void freeResources();
private:
unsigned _display;
int _pixelDecimation;
unsigned _screenWidth;
unsigned _screenHeight;
unsigned _src_x;
unsigned _src_y;
unsigned _src_x_max;
unsigned _src_y_max;
QScreen* _screen;
};