The DispmanxFrameGrabber is used for creating snapshots of the display (screenshots) with a downsized and scaled resolution. More...
#include <DispmanxFrameGrabber.h>
Inheritance diagram for DispmanxFrameGrabber:
Public Member Functions | |
| DispmanxFrameGrabber (const unsigned width, const unsigned height) | |
| Construct a DispmanxFrameGrabber that will capture snapshots with specified dimensions. More... | |
| int | grabFrame (Image< ColorRgb > &image) |
| Captures a single snapshot of the display and writes the data to the given image. More... | |
| virtual bool | setWidthHeight (int width, int height) |
| Set new width and height for dispmanx, overwrite Grabber.h impl. | |
 Public Member Functions inherited from Grabber | |
| Grabber (QString grabberName, int width=0, int height=0, int cropLeft=0, int cropRight=0, int cropTop=0, int cropBottom=0) | |
| virtual void | setVideoMode (VideoMode mode) |
| Set the video mode (2D/3D) More... | |
| virtual void | setCropping (unsigned cropLeft, unsigned cropRight, unsigned cropTop, unsigned cropBottom) |
| Apply new crop values, on errors reject the values. | |
| virtual void | setPixelDecimation (int pixelDecimation) |
| Apply new pixelDecimation (used from x11 and qt) | |
| virtual void | setSignalThreshold (double redSignalThreshold, double greenSignalThreshold, double blueSignalThreshold, int noSignalCounterThreshold=50) |
| Apply new signalThreshold (used from v4l) | |
| virtual void | setSignalDetectionOffset (double verticalMin, double horizontalMin, double verticalMax, double horizontalMax) |
| Apply new SignalDetectionOffset (used from v4l) | |
| virtual void | setSignalDetectionEnable (bool enable) |
| Apply SignalDetectionEnable (used from v4l) | |
| virtual void | setDeviceVideoStandard (QString device, VideoStandard videoStandard) |
| Apply device and videoStanded (used from v4l) | |
| virtual void | setDisplayIndex (int index) |
| Apply display index (used from qt) | |
| virtual void | setDevicePath (const QString &path) |
| Apply path for device (used from framebuffer) | |
| virtual int | getImageWidth () |
| get current resulting height of image (after crop) | |
| virtual int | getImageHeight () |
| get current resulting width of image (after crop) | |
| void | setEnabled (bool enable) |
| Prevent the real capture implementation from capturing if disabled. | |
Additional Inherited Members | |
| Protected Attributes inherited from Grabber | |
| ImageResampler | _imageResampler |
| bool | _useImageResampler |
| VideoMode | _videoMode |
| the selected VideoMode | |
| int | _width |
| With of the captured snapshot [pixels]. | |
| int | _height |
| Height of the captured snapshot [pixels]. | |
| int | _cropLeft |
| int | _cropRight |
| int | _cropTop |
| int | _cropBottom |
| bool | _enabled |
| Logger * | _log |
| logger instance | |
Detailed Description
The DispmanxFrameGrabber is used for creating snapshots of the display (screenshots) with a downsized and scaled resolution.
Constructor & Destructor Documentation
§ DispmanxFrameGrabber()
| DispmanxFrameGrabber::DispmanxFrameGrabber | ( | const unsigned | width, |
| const unsigned | height | ||
| ) |
Construct a DispmanxFrameGrabber that will capture snapshots with specified dimensions.
- Parameters
-
[in] width The width of the captured screenshot [in] height The heigth of the captured screenshot
Member Function Documentation
§ grabFrame()
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)
- Parameters
-
[out] image The snapped screenshot (should be initialized with correct width and height)
The documentation for this class was generated from the following files:
- include/grabber/DispmanxFrameGrabber.h
- libsrc/grabber/dispmanx/DispmanxFrameGrabber.cpp
