The platform capture implementation based on QT API. More...
#include <QtGrabber.h>
Inheritance diagram for QtGrabber:
Public Member Functions | |
| QtGrabber (int cropLeft, int cropRight, int cropTop, int cropBottom, int pixelDecimation, int display) | |
| virtual int | grabFrame (Image< ColorRgb > &image) |
| Captures a single snapshot of the display and writes the data to the given image. More... | |
| virtual void | setVideoMode (VideoMode mode) |
| Set a new video mode. | |
| virtual bool | setWidthHeight (int width, int height) |
| Apply new width/height values, overwrite Grabber.h implementation as qt doesn't use width/height, just pixelDecimation to calc dimensions. | |
| virtual void | setPixelDecimation (int pixelDecimation) |
| Apply new pixelDecimation. | |
| virtual void | setCropping (unsigned cropLeft, unsigned cropRight, unsigned cropTop, unsigned cropBottom) |
| Set the crop values. More... | |
| virtual void | setDisplayIndex (int index) |
| Apply display index. | |
 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 | 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 | 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 platform capture implementation based on QT API.
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)
§ setCropping()
|
virtual |
Set the crop values.
- Parameters
-
cropLeft Left pixel crop cropRight Right pixel crop cropTop Top pixel crop cropBottom Bottom pixel crop
Reimplemented from Grabber.
The documentation for this class was generated from the following files:
- include/grabber/QtGrabber.h
- libsrc/grabber/qt/QtGrabber.cpp
