DeinterlacedFrame.cc

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#include "DeinterlacedFrame.hh"
#include <cassert>
 
namespace openmsx {
 
void DeinterlacedFrame::init(FrameSource* evenField, FrameSource* oddField)
{
        FrameSource::init(FieldType::NONINTERLACED);
        // TODO: I think these assertions make sense, but we cannot currently
        //       guarantee them. See TODO in PostProcessor::paint.
        //assert(evenField->getField() == FrameSource::FieldType::EVEN);
        //assert(oddField->getField() == FrameSource::FieldType::ODD);
        assert(evenField->getHeight() == oddField->getHeight());
        setHeight(2 * evenField->getHeight());
        fields[0] = evenField;
        fields[1] = oddField;
}
 
unsigned DeinterlacedFrame::getLineWidth(unsigned line) const
{
        return fields[line & 1]->getLineWidth(line >> 1);
}
 
std::span<const FrameSource::Pixel> DeinterlacedFrame::getUnscaledLine(
        unsigned line, std::span<Pixel> helpBuf) const
{
        return fields[line & 1]->getUnscaledLine(line >> 1, helpBuf);
}
 
} // namespace openmsx