hyperion.ng/include/grabber/X11Grabber.h

127 lines
3.0 KiB
C++

#pragma once
#include <QAbstractEventDispatcher>
#include <QAbstractNativeEventFilter>
#include <QCoreApplication>
// QT includes
#include <QObject>
#include <QJsonObject>
#include <QJsonArray>
#include <QJsonDocument>
// Hyperion-utils includes
#include <utils/ColorRgb.h>
#include <hyperion/Grabber.h>
// X11 includes
#include <X11/Xlib.h>
#include <X11/extensions/Xrandr.h>
#include <X11/extensions/Xrender.h>
#include <X11/extensions/XShm.h>
#include <sys/ipc.h>
#include <sys/shm.h>
class X11Grabber : public Grabber , public QAbstractNativeEventFilter
{
public:
X11Grabber(int cropLeft=0, int cropRight=0, int cropTop=0, int cropBottom=0);
~X11Grabber() override;
bool open();
bool setupDisplay();
///
/// 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)
///
int grabFrame(Image<ColorRgb> & image, bool forceUpdate=false);
///
/// update dimension according current screen
int updateScreenDimensions(bool force=false);
void setVideoMode(VideoMode mode) override;
///
/// @brief Apply new width/height values, overwrite Grabber.h implementation as X11 doesn't use width/height, just pixelDecimation to calc dimensions
///
bool setWidthHeight(int width, int height) override { return true; }
///
/// @brief Apply new pixelDecimation
///
bool setPixelDecimation(int pixelDecimation) override;
///
/// Set the crop values
/// @param cropLeft Left pixel crop
/// @param cropRight Right pixel crop
/// @param cropTop Top pixel crop
/// @param cropBottom Bottom pixel crop
///
void setCropping(int cropLeft, int cropRight, int cropTop, int cropBottom) override;
///
/// @brief Discover X11 screens available (for configuration).
///
/// @param[in] params Parameters used to overwrite discovery default behaviour
///
/// @return A JSON structure holding a list of devices found
///
QJsonObject discover(const QJsonObject& params);
protected:
#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
bool nativeEventFilter(const QByteArray & eventType, void * message, qintptr * result) override;
#else
bool nativeEventFilter(const QByteArray & eventType, void * message, long int * result) override;
#endif
private:
void freeResources();
void setupResources();
/// Reference to the X11 display (nullptr if not opened)
Display* _x11Display;
Window _window;
XWindowAttributes _windowAttr;
XImage* _xImage;
XShmSegmentInfo _shminfo;
Pixmap _pixmap;
XRenderPictFormat* _srcFormat;
XRenderPictFormat* _dstFormat;
XRenderPictureAttributes _pictAttr;
Picture _srcPicture;
Picture _dstPicture;
int _XRandREventBase;
XTransform _transform;
unsigned _calculatedWidth;
unsigned _calculatedHeight;
unsigned _src_x;
unsigned _src_y;
bool _XShmAvailable;
bool _XShmPixmapAvailable;
bool _XRenderAvailable;
bool _XRandRAvailable;
bool _isWayland;
Logger * _logger;
Image<ColorRgb> _image;
};