100 lines
2.5 KiB
C++
100 lines
2.5 KiB
C++
#pragma once
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#include <QAbstractEventDispatcher>
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#include <QAbstractNativeEventFilter>
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#include <QCoreApplication>
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#include <QObject>
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// Hyperion-utils includes
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#include <utils/ColorRgb.h>
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#include <hyperion/Grabber.h>
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// X11 includes
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#include <X11/Xlib.h>
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#include <X11/extensions/Xrandr.h>
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#include <X11/extensions/Xrender.h>
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#include <X11/extensions/XShm.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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class X11Grabber : public Grabber , public QAbstractNativeEventFilter
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{
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public:
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X11Grabber(int cropLeft, int cropRight, int cropTop, int cropBottom, int pixelDecimation);
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~X11Grabber() override;
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bool Setup();
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///
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/// Captures a single snapshot of the display and writes the data to the given image. The
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/// provided image should have the same dimensions as the configured values (_width and
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/// _height)
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///
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/// @param[out] image The snapped screenshot (should be initialized with correct width and
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/// height)
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///
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int grabFrame(Image<ColorRgb> & image, bool forceUpdate=false);
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///
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/// update dimension according current screen
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int updateScreenDimensions(bool force=false);
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void setVideoMode(VideoMode mode) override;
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///
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/// @brief Apply new width/height values, overwrite Grabber.h implementation as X11 doesn't use width/height, just pixelDecimation to calc dimensions
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///
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bool setWidthHeight(int width, int height) override { return true; }
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///
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/// @brief Apply new pixelDecimation
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///
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void setPixelDecimation(int pixelDecimation) override;
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///
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/// Set the crop values
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/// @param cropLeft Left pixel crop
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/// @param cropRight Right pixel crop
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/// @param cropTop Top pixel crop
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/// @param cropBottom Bottom pixel crop
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///
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void setCropping(unsigned cropLeft, unsigned cropRight, unsigned cropTop, unsigned cropBottom) override;
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protected:
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bool nativeEventFilter(const QByteArray & eventType, void * message, long int * result) override;
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private:
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bool _XShmAvailable, _XShmPixmapAvailable, _XRenderAvailable, _XRandRAvailable;
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XImage* _xImage;
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XShmSegmentInfo _shminfo;
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/// Reference to the X11 display (nullptr if not opened)
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Display* _x11Display;
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Window _window;
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XWindowAttributes _windowAttr;
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Pixmap _pixmap;
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XRenderPictFormat* _srcFormat;
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XRenderPictFormat* _dstFormat;
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XRenderPictureAttributes _pictAttr;
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Picture _srcPicture;
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Picture _dstPicture;
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int _XRandREventBase;
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XTransform _transform;
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int _pixelDecimation;
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unsigned _screenWidth;
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unsigned _screenHeight;
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unsigned _src_x;
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unsigned _src_y;
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Image<ColorRgb> _image;
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void freeResources();
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void setupResources();
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};
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