Scaler3.cc

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#include "Scaler3.hh"
#include "LineScalers.hh"
#include "FrameSource.hh"
#include "SuperImposeScalerOutput.hh"
#include "unreachable.hh"
#include "vla.hh"
#include "xrange.hh"
#include "build-info.hh"
#include <cstdint>
 
namespace openmsx {
 
template<std::unsigned_integral Pixel>
Scaler3<Pixel>::Scaler3(const PixelOperations<Pixel>& pixelOps_)
        : pixelOps(pixelOps_)
{
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scaleBlank1to3(
                FrameSource& src, unsigned srcStartY, unsigned /*srcEndY*/,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        for (unsigned srcY = srcStartY, dstY = dstStartY;
             dstY < dstEndY; srcY += 1, dstY += 3) {
                auto color = src.getLineColor<Pixel>(srcY);
                for (auto i : xrange(3)) {
                        dst.fillLine(dstY + i, color);
                }
        }
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scaleBlank2to3(
                FrameSource& src, unsigned srcStartY, unsigned /*srcEndY*/,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        for (unsigned srcY = srcStartY, dstY = dstStartY;
             dstY < dstEndY; srcY += 2, dstY += 3) {
                auto color0 = src.getLineColor<Pixel>(srcY + 0);
                auto color1 = src.getLineColor<Pixel>(srcY + 1);
                Pixel color01 = pixelOps.template blend<1, 1>(color0, color1);
                dst.fillLine(dstY + 0, color0);
                dst.fillLine(dstY + 1, color01);
                dst.fillLine(dstY + 2, color1);
        }
}
 
template<std::unsigned_integral Pixel>
static void doScale1(FrameSource& src,
        unsigned srcStartY, unsigned /*srcEndY*/, unsigned srcWidth,
        ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY,
        PolyLineScaler<Pixel>& scale)
{
        VLA_SSE_ALIGNED(Pixel, buf, srcWidth);
        Scale_1on1<Pixel> copy;
        for (unsigned dstY = dstStartY; dstY < dstEndY; dstY += 3, ++srcStartY) {
                auto srcLine = src.getLine(srcStartY, buf);
                auto dstLine0 = dst.acquireLine(dstY + 0);
                scale(srcLine, dstLine0);
 
                auto dstLine1 = dst.acquireLine(dstY + 1);
                copy(dstLine0, dstLine1);
 
                auto dstLine2 = dst.acquireLine(dstY + 2);
                copy(dstLine0, dstLine2);
 
                dst.releaseLine(dstY + 0, dstLine0);
                dst.releaseLine(dstY + 1, dstLine1);
                dst.releaseLine(dstY + 2, dstLine2);
        }
}
 
template<std::unsigned_integral Pixel>
static void doScaleDV(FrameSource& src,
        unsigned srcStartY, unsigned /*srcEndY*/, unsigned srcWidth,
        ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY,
        PixelOperations<Pixel> ops, PolyLineScaler<Pixel>& scale)
{
        VLA_SSE_ALIGNED(Pixel, buf, srcWidth);
        BlendLines<Pixel> blend(ops);
        for (unsigned srcY = srcStartY, dstY = dstStartY; dstY < dstEndY;
             srcY += 2, dstY += 3) {
                auto srcLine0 = src.getLine(srcY + 0, buf);
                auto dstLine0 = dst.acquireLine(dstY + 0);
                scale(srcLine0, dstLine0);
 
                auto srcLine1 = src.getLine(srcY + 1, buf);
                auto dstLine2 = dst.acquireLine(dstY + 2);
                scale(srcLine1, dstLine2);
 
                auto dstLine1 = dst.acquireLine(dstY + 1);
                blend(dstLine0, dstLine2, dstLine1);
 
                dst.releaseLine(dstY + 0, dstLine0);
                dst.releaseLine(dstY + 1, dstLine1);
                dst.releaseLine(dstY + 2, dstLine2);
        }
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale2x1to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_2on9<Pixel>> op(pixelOps);
        doScale1<Pixel>(src, srcStartY, srcEndY, srcWidth,
                        dst, dstStartY, dstEndY, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale2x2to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_2on9<Pixel>> op(pixelOps);
        doScaleDV<Pixel>(src, srcStartY, srcEndY, srcWidth,
                         dst, dstStartY, dstEndY, pixelOps, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale1x1to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_1on3<Pixel>> op;
        doScale1<Pixel>(src, srcStartY, srcEndY, srcWidth,
                        dst, dstStartY, dstEndY, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale1x2to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_1on3<Pixel>> op;
        doScaleDV<Pixel>(src, srcStartY, srcEndY, srcWidth,
                         dst, dstStartY, dstEndY, pixelOps, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale4x1to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_4on9<Pixel>> op(pixelOps);
        doScale1<Pixel>(src, srcStartY, srcEndY, srcWidth,
                        dst, dstStartY, dstEndY, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale4x2to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_4on9<Pixel>> op(pixelOps);
        doScaleDV<Pixel>(src, srcStartY, srcEndY, srcWidth,
                         dst, dstStartY, dstEndY, pixelOps, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale2x1to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_2on3<Pixel>> op(pixelOps);
        doScale1<Pixel>(src, srcStartY, srcEndY, srcWidth,
                        dst, dstStartY, dstEndY, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale2x2to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_2on3<Pixel>> op(pixelOps);
        doScaleDV<Pixel>(src, srcStartY, srcEndY, srcWidth,
                         dst, dstStartY, dstEndY, pixelOps, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale8x1to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_8on9<Pixel>> op(pixelOps);
        doScale1<Pixel>(src, srcStartY, srcEndY, srcWidth,
                        dst, dstStartY, dstEndY, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale8x2to9x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_8on9<Pixel>> op(pixelOps);
        doScaleDV<Pixel>(src, srcStartY, srcEndY, srcWidth,
                         dst, dstStartY, dstEndY, pixelOps, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale4x1to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_4on3<Pixel>> op(pixelOps);
        doScale1<Pixel>(src, srcStartY, srcEndY, srcWidth,
                        dst, dstStartY, dstEndY, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scale4x2to3x3(FrameSource& src,
                unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
                ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        PolyScale<Pixel, Scale_4on3<Pixel>> op(pixelOps);
        doScaleDV<Pixel>(src, srcStartY, srcEndY, srcWidth,
                         dst, dstStartY, dstEndY, pixelOps, op);
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::dispatchScale(FrameSource& src,
        unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
        ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        if (src.getHeight() == 240) {
                switch (srcWidth) {
                case 1:
                        scaleBlank1to3(src, srcStartY, srcEndY,
                                      dst, dstStartY, dstEndY);
                        break;
                case 213:
                        scale2x1to9x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                case 320:
                        scale1x1to3x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                case 426:
                        scale4x1to9x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                case 640:
                        scale2x1to3x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                case 853:
                        scale8x1to9x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                case 1280:
                        scale4x1to3x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                default:
                        UNREACHABLE;
                }
        } else {
                assert(src.getHeight() == 480);
                switch (srcWidth) {
                case 1:
                        scaleBlank2to3(src, srcStartY, srcEndY,
                                      dst, dstStartY, dstEndY);
                        break;
                case 213:
                        scale2x2to9x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                case 320:
                        scale1x2to3x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                case 426:
                        scale4x2to9x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                case 640:
                        scale2x2to3x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                case 853:
                        scale8x2to9x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                case 1280:
                        scale4x2to3x3(src, srcStartY, srcEndY, srcWidth,
                                      dst, dstStartY, dstEndY);
                        break;
                default:
                        UNREACHABLE;
                }
        }
}
 
template<std::unsigned_integral Pixel>
void Scaler3<Pixel>::scaleImage(FrameSource& src, const RawFrame* superImpose,
        unsigned srcStartY, unsigned srcEndY, unsigned srcWidth,
        ScalerOutput<Pixel>& dst, unsigned dstStartY, unsigned dstEndY)
{
        if (superImpose) {
                SuperImposeScalerOutput<Pixel> dst2(
                        dst, *superImpose, pixelOps);
                dispatchScale(src, srcStartY, srcEndY, srcWidth,
                              dst2, dstStartY, dstEndY);
        } else {
                dispatchScale(src, srcStartY, srcEndY, srcWidth,
                              dst, dstStartY, dstEndY);
        }
}
 
// Force template instantiation.
#if HAVE_16BPP
template class Scaler3<uint16_t>;
#endif
#if HAVE_32BPP
template class Scaler3<uint32_t>;
#endif
 
} // namespace openmsx