pdf::Image::Image(PoDoFo::PdfObject *pObject) :
        width((const l_int32) pObject->GetDictionary().GetKeyAsLong(PoDoFo::PdfName::FromEscaped("Width"))),
        height((const l_int32) pObject->GetDictionary().GetKeyAsLong(PoDoFo::PdfName::FromEscaped("Height"))),
        bpp((const int8_t) pObject->GetDictionary().GetKeyAsLong(PoDoFo::PdfName::FromEscaped("BitsPerComponent"))) {

    char *tmp;
    long len;
    dynamic_cast<PoDoFo::PdfMemStream *>(pObject->GetStream())->GetFilteredCopy(&tmp, &len);

    Magick::Blob blob;
    blob.updateNoCopy(tmp, (size_t) len, Magick::Blob::MallocAllocator);
    Magick::Image im(blob, Magick::Geometry(width, height), 2, "gray");

    std::string pnm_header = "P5\n" + std::to_string(width) + " " + std::to_string(height) + "\n255\n";

    unsigned char *buffer = (unsigned char *) malloc(width * height + pnm_header.size());

    memcpy(buffer, pnm_header.c_str(), pnm_header.size());
    im.write(0, 0, width, height, "I", MagickCore::StorageType::CharPixel, buffer + pnm_header.size());

    pix_image = pixReadMemPnm(buffer, width * height + pnm_header.size());
    free(buffer);
}