Examples with LzmaEncoderProps info.ata4.io.lzma.LzmaEncoderProps used on opensource projects

Example 1 with LzmaEncoderProps

use of info.ata4.io.lzma.LzmaEncoderProps in project disunity by ata4.

the class BundleWriter method write.

public void write(Bundle bundle, Progress progress) throws IOException {
    this.bundle = bundle;
    // add offset placeholders
    levelOffsetMap.clear();
    bundle.entries().stream().filter(entry -> {
        if (bundle.entries().size() == 1) {
            return true;
        }
        String name = entry.name();
        return name.equals("mainData") || name.startsWith("level");
    }).forEach(entry -> levelOffsetMap.put(entry, new MutablePair<>(0L, 0L)));
    BundleHeader header = bundle.header();
    header.levelByteEnd().clear();
    header.levelByteEnd().addAll(levelOffsetMap.values());
    header.numberOfLevelsToDownload(levelOffsetMap.size());
    // write header
    out.writeStruct(header);
    header.headerSize((int) out.position());
    // write bundle data
    if (header.compressed()) {
        // write data to temporary file
        try (DataWriter outData = DataWriters.forFile(dataFile, CREATE, WRITE, TRUNCATE_EXISTING)) {
            writeData(outData, progress);
        }
        // configure LZMA encoder
        LzmaEncoderProps props = new LzmaEncoderProps();
        // 8 MiB
        props.setDictionarySize(1 << 23);
        // maximum
        props.setNumFastBytes(273);
        props.setUncompressedSize(Files.size(dataFile));
        props.setEndMarkerMode(true);
        // stream the temporary bundle data compressed into the bundle file
        try (OutputStream os = new LzmaOutputStream(new BufferedOutputStream(out.stream()), props)) {
            Files.copy(dataFile, os);
        }
        for (MutablePair<Long, Long> levelOffset : levelOffsetMap.values()) {
            levelOffset.setLeft(out.size());
        }
    } else {
        // write data directly to file
        writeData(out, progress);
    }
    // update header
    int fileSize = (int) out.size();
    header.completeFileSize(fileSize);
    header.minimumStreamedBytes(fileSize);
    out.position(0);
    out.writeStruct(header);
}