Commits from @MartB and more ...

- Commit: 1d9165f403
- New default QT capture implementation
- UploadHandler added to Effects Configurator to allow uploading GIF files
- Docker compile script and instruction
- Travis Fix

include/grabber/QtGrabber.h

@@ -0,0 +1,96 @@
+#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);
+
+	virtual ~QtGrabber();
+
+	///
+	/// 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
+	///
+	const 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;
+};

include/grabber/QtWrapper.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <hyperion/GrabberWrapper.h>
+#include <grabber/QtGrabber.h>
+
+///
+/// The QtWrapper uses QtFramework API's to get a picture from system
+///
+class QtWrapper: public GrabberWrapper
+{
+public:
+	///
+	/// Constructs the framebuffer frame grabber with a specified grab size and update rate.
+	///
+	/// @param[in] cropLeft          Remove from left [pixels]
+	/// @param[in] cropRight 	     Remove from right [pixels]
+	/// @param[in] cropTop           Remove from top [pixels]
+	/// @param[in] cropBottom        Remove from bottom [pixels]
+	/// @param[in] pixelDecimation   Decimation factor for image [pixels]
+	/// @param[in] updateRate_Hz     The image grab rate [Hz]
+	///
+	QtWrapper(int cropLeft, int cropRight, int cropTop, int cropBottom, int pixelDecimation, int display, const unsigned updateRate_Hz);
+
+	///
+	/// Destructor of this qt frame grabber. Releases any claimed resources.
+	///
+	virtual ~QtWrapper() {};
+
+public slots:
+	///
+	/// Performs a single frame grab and computes the led-colors
+	///
+	virtual void action();
+
+private:
+	/// The actual grabber
+	QtGrabber _grabber;
+};