74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
#pragma once
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#include <linux/fb.h>
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// Utils includes
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#include <utils/ColorRgb.h>
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#include <hyperion/Grabber.h>
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///
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/// The FramebufferFrameGrabber is used for creating snapshots of the display (screenshots)
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///
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class FramebufferFrameGrabber : public Grabber
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{
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public:
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///
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/// Construct a FramebufferFrameGrabber that will capture snapshots with specified dimensions.
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///
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/// @param[in] device The framebuffer device name/path
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///
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FramebufferFrameGrabber(const QString & device="/dev/fb0");
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~FramebufferFrameGrabber() override;
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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);
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///
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/// @brief Setup a new capture screen, will free the previous one
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/// @return True on success, false if no screen is found
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///
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bool setupScreen();
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QSize getScreenSize() const;
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QSize getScreenSize(const QString& device) const;
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///
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///@brief Set new width and height for framegrabber, overwrite Grabber.h implementation
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bool setWidthHeight(int width, int height) override;
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QString getPath() const {return _fbDevice;}
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///
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/// @brief Discover Framebuffer screens available (for configuration).
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///
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/// @param[in] params Parameters used to overwrite discovery default behaviour
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///
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/// @return A JSON structure holding a list of devices found
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///
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QJsonObject discover(const QJsonObject& params);
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private:
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bool openDevice();
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bool closeDevice();
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bool getScreenInfo();
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/// Framebuffer device e.g. /dev/fb0
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QString _fbDevice;
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int _fbfd;
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struct fb_var_screeninfo _varInfo;
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struct fb_fix_screeninfo _fixInfo;
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PixelFormat _pixelFormat;
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};
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