hyperion.ng/libsrc/hyperion/Grabber.cpp

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#include <hyperion/Grabber.h>
Grabber::Grabber(QString grabberName, int width, int height, int cropLeft, int cropRight, int cropTop, int cropBottom)
: _imageResampler()
, _useImageResampler(true)
, _videoMode(VIDEO_2D)
, _width(width)
, _height(height)
, _cropLeft(0)
, _cropRight(0)
, _cropTop(0)
, _cropBottom(0)
, _enabled(true)
, _log(Logger::getInstance(grabberName))
{
Grabber::setVideoMode(VIDEO_2D);
Grabber::setCropping(cropLeft, cropRight, cropTop, cropBottom);
}
Grabber::~Grabber()
{
}
void Grabber::setEnabled(bool enable)
{
Info(_log,"Capture interface is now %s", enable ? "enabled" : "disabled");
_enabled = enable;
}
void Grabber::setVideoMode(VideoMode mode)
{
Debug(_log,"Set videomode to %d", mode);
_videoMode = mode;
if ( _useImageResampler )
{
_imageResampler.setVideoMode(_videoMode);
}
}
void Grabber::setCropping(unsigned cropLeft, unsigned cropRight, unsigned cropTop, unsigned cropBottom)
{
if (_width>0 && _height>0)
{
if (cropLeft + cropRight >= (unsigned)_width || cropTop + cropBottom >= (unsigned)_height)
{
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Error(_log, "Rejecting invalid crop values: left: %d, right: %d, top: %d, bottom: %d, higher than height/width %d/%d", cropLeft, cropRight, cropTop, cropBottom, _height, _width);
return;
}
}
_cropLeft = cropLeft;
_cropRight = cropRight;
_cropTop = cropTop;
_cropBottom = cropBottom;
if ( _useImageResampler )
{
_imageResampler.setCropping(cropLeft, cropRight, cropTop, cropBottom);
}
else
{
_imageResampler.setCropping(0, 0, 0, 0);
}
if (cropLeft > 0 || cropRight > 0 || cropTop > 0 || cropBottom > 0)
{
Info(_log, "Cropping image: width=%d height=%d; crop: left=%d right=%d top=%d bottom=%d ", _width, _height, cropLeft, cropRight, cropTop, cropBottom);
}
}
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bool Grabber::setWidthHeight(int width, int height)
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{
// eval changes with crop
if ( (width>0 && height>0) && (_width != width || _height != height) )
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{
if (_cropLeft + _cropRight >= width || _cropTop + _cropBottom >= height)
{
Error(_log, "Rejecting invalid width/height values as it collides with image cropping: width: %d, height: %d", width, height);
return false;
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}
Debug(_log, "Set new width: %d, height: %d for capture", width, height);
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_width = width;
_height = height;
return true;
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}
return false;
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}