Method SerializeImage

src/pdf/PDFBitmap.cpp:299–335

}  // namespace

void PDFBitmap::SerializeImage(const std::shared_ptr<Image>& image, int /*encodingQuality*/,
                               PDFDocumentImpl* doc, PDFIndirectReference ref) {
  auto dimensions = ISize::Make(image->width(), image->height());

  ;
  if (Types::Get(image.get()) == Types::ImageType::Codec) {
    const auto codecImage = static_cast<CodecImage*>(image.get());
    if (auto data = codecImage->getCodec()->getEncodedData()) {
      if (DoJpeg(std::move(data), YUVColorSpace::JPEG_FULL, doc, dimensions, ref)) {
        return;
      }
    }
  }

  //TODO (YGaurora): is image opaque,encode as jpeg
  auto image2bitmap = [](Context* context, const std::shared_ptr<Image>& image) {
    auto surface = Surface::Make(context, image->width(), image->height());
    auto canvas = surface->getCanvas();
    canvas->drawImage(image);

    Bitmap bitmap(surface->width(), surface->height());
    auto pixels = bitmap.lockPixels();
    //bitmap in pdf must be unpremultiplied
    if (surface->readPixels(bitmap.info().makeAlphaType(AlphaType::Unpremultiplied), pixels)) {
      bitmap.unlockPixels();
      return bitmap;
    }
    return Bitmap();
  };

  auto bitmap = image2bitmap(doc->context(), image);
  if (bitmap.isEmpty()) {
    return;
  }
  auto pixmap = Pixmap(bitmap);
  DoDeflatedImage(pixmap, doc, bitmap.isOpaque(), ref);
}

PDFIndirectReference PDFBitmap::Serialize(const std::shared_ptr<Image>& image,
                                          PDFDocumentImpl* document, int encodingQuality) {