示例#1
0
    void TiffParser::decode(Image*             pImage,
                            const byte*        pData,
                            uint32_t           size,
                            TiffCompFactoryFct createFct,
                            FindDecoderFct     findDecoderFct,
			    TiffHeaderBase*    pHeader)
    {
        assert(pImage != 0);
        assert(pData != 0);

        std::auto_ptr<TiffHeaderBase> ph;
        if (!pHeader) {
            ph = std::auto_ptr<TiffHeaderBase>(new TiffHeade2);
            pHeader = ph.get();
        }

        if (!pHeader->read(pData, size) || pHeader->offset() >= size) {
            throw Error(3, "TIFF");
        }
        TiffComponent::AutoPtr rootDir = createFct(Tag::root, Group::none);
        if (0 == rootDir.get()) return;
        rootDir->setStart(pData + pHeader->offset());

        TiffRwState::AutoPtr state(
            new TiffRwState(pHeader->byteOrder(), 0, createFct));
        TiffReader reader(pData, size, rootDir.get(), state);
        rootDir->accept(reader);

        TiffMetadataDecoder decoder(pImage, rootDir.get(), findDecoderFct, 4096);
        rootDir->accept(decoder);

    } // TiffParser::decode
示例#2
0
    ByteOrder TiffParserWorker::decode(
              ExifData&          exifData,
              IptcData&          iptcData,
              XmpData&           xmpData,
        const byte*              pData,
              uint32_t           size,
              TiffCompFactoryFct createFct,
              FindDecoderFct     findDecoderFct,
              TiffHeaderBase*    pHeader
    )
    {
        // Create standard TIFF header if necessary
        std::auto_ptr<TiffHeaderBase> ph;
        if (!pHeader) {
            ph = std::auto_ptr<TiffHeaderBase>(new TiffHeader);
            pHeader = ph.get();
        }
        TiffComponent::AutoPtr rootDir = parse(pData, size, createFct, pHeader);
        if (0 != rootDir.get()) {
            TiffDecoder decoder(exifData,
                                iptcData,
                                xmpData,
                                rootDir.get(),
                                findDecoderFct);
            rootDir->accept(decoder);
        }
        return pHeader->byteOrder();

    } // TiffParserWorker::decode
示例#3
0
    TiffComponent::AutoPtr TiffParserWorker::parse(
        const byte*              pData,
              uint32_t           size,
              TiffCompFactoryFct createFct,
              TiffHeaderBase*    pHeader
    )
    {
        if (pData == 0 || size == 0) return TiffComponent::AutoPtr(0);
        if (!pHeader->read(pData, size) || pHeader->offset() >= size) {
            throw Error(3, "TIFF");
        }
        TiffComponent::AutoPtr rootDir = createFct(Tag::root, Group::none);
        if (0 != rootDir.get()) {
            rootDir->setStart(pData + pHeader->offset());
            TiffRwState::AutoPtr state(
                new TiffRwState(pHeader->byteOrder(), 0, createFct));
            TiffReader reader(pData, size, rootDir.get(), state);
            rootDir->accept(reader);
        }
        return rootDir;

    } // TiffParserWorker::parse
示例#4
0
    WriteMethod TiffParserWorker::encode(
              Blob&              blob,
        const byte*              pData,
              uint32_t           size,
        const ExifData&          exifData,
        const IptcData&          iptcData,
        const XmpData&           xmpData,
              TiffCompFactoryFct createFct,
              FindEncoderFct     findEncoderFct,
              TiffHeaderBase*    pHeader
    )
    {
        /*
           1) parse the binary image, if one is provided, and
           2) attempt updating the parsed tree in-place ("non-intrusive writing")
           3) else, create a new tree and write a new TIFF structure ("intrusive
              writing"). If there is a parsed tree, it is only used to access the
              image data in this case.
         */
        assert(pHeader);
        assert(pHeader->byteOrder() != invalidByteOrder);
        blob.clear();
        WriteMethod writeMethod = wmIntrusive;
        TiffComponent::AutoPtr createdTree;
        TiffComponent::AutoPtr parsedTree = parse(pData, size, createFct, pHeader);
        if (0 != parsedTree.get()) {
            // Attempt to update existing TIFF components based on metadata entries
            TiffEncoder encoder(exifData,
                                iptcData,
                                xmpData,
                                parsedTree.get(),
                                pHeader->byteOrder(),
                                findEncoderFct);
            parsedTree->accept(encoder);
            if (!encoder.dirty()) writeMethod = wmNonIntrusive;
        }
        if (writeMethod == wmIntrusive) {
            createdTree = createFct(Tag::root, Group::none);
            TiffEncoder encoder(exifData,
                                iptcData,
                                xmpData,
                                createdTree.get(),
                                pHeader->byteOrder(),
                                findEncoderFct);
            // Add entries from metadata to composite
            encoder.add(createdTree.get(), parsedTree.get(), createFct);
            // Write binary representation from the composite tree
            uint32_t offset = pHeader->write(blob);
            uint32_t imageIdx(uint32_t(-1));
            uint32_t len = createdTree->write(blob, pHeader->byteOrder(), offset, uint32_t(-1), uint32_t(-1), imageIdx);
            // Avoid writing just the header if there is no IFD data
            if (len == 0) blob.clear();
#ifdef DEBUG
            std::cerr << "Intrusive writing\n";
#endif
        }
#ifdef DEBUG
        else {
            std::cerr << "Non-intrusive writing\n";
        }
#endif
        return writeMethod;
    } // TiffParserWorker::encode