JXLExpTool Namespace Reference

Classes
struct	JxlOutputProcessor

Functions
template<typename... Args>
QByteArray	writeCMYKLayer (const KoID &id, Args &&...args)
template<typename CSTrait >
QByteArray	writeCMYKPixels (bool isTrichromatic, int chPos, const int width, const int height, KisHLineConstIteratorSP it)

Function Documentation

writeCMYKLayer()

template<typename... Args>

QByteArray JXLExpTool::writeCMYKLayer ( const KoID & id, Args &&... args )

inline

Definition at line 65 of file kis_jpegxl_export_tools.h.

{
    if (id == Integer8BitsColorDepthID) {
        return writeCMYKPixels<KoCmykU8Traits>(std::forward<Args>(args)...);
    } else if (id == Integer16BitsColorDepthID) {
        return writeCMYKPixels<KoCmykU16Traits>(std::forward<Args>(args)...);
#ifdef HAVE_OPENEXR
    } else if (id == Float16BitsColorDepthID) {
        return writeCMYKPixels<KoCmykF16Traits>(std::forward<Args>(args)...);
#endif
    } else if (id == Float32BitsColorDepthID) {
        return writeCMYKPixels<KoCmykF32Traits>(std::forward<Args>(args)...);
    } else {
        KIS_ASSERT_X(false, "JPEGXLExport::writeLayer", "unsupported bit depth!");
        return QByteArray();
    }
}

References Float16BitsColorDepthID, Float32BitsColorDepthID, Integer16BitsColorDepthID, Integer8BitsColorDepthID, and KIS_ASSERT_X.

writeCMYKPixels()

template<typename CSTrait >

QByteArray JXLExpTool::writeCMYKPixels ( bool isTrichromatic, int chPos, const int width, const int height, KisHLineConstIteratorSP it )

inline

Definition at line 30 of file kis_jpegxl_export_tools.h.

{
    const int channels = isTrichromatic ? 3 : 1;
    const int chSize = static_cast<int>(CSTrait::pixelSize / 5);
    const int pxSize = chSize * channels;
    const int chOffset = chPos * chSize;
 
    QByteArray res;
    res.resize(width * height * pxSize);
 
    quint8 *ptr = reinterpret_cast<quint8 *>(res.data());
 
    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            const quint8 *src = it->rawDataConst();
 
            if (isTrichromatic) {
                for (int i = 0; i < channels; i++) {
                    std::memcpy(ptr, src + (i * chSize), chSize);
                    ptr += chSize;
                }
            } else {
                std::memcpy(ptr, src + chOffset, chSize);
                ptr += chSize;
            }
 
            it->nextPixel();
        }
 
        it->nextRow();
    }
    return res;
}

References KisBaseConstIteratorNG::nextPixel(), KisHLineConstIteratorNG::nextRow(), and KisBaseConstAccessor::rawDataConst().