Examples with DeflaterOutputStream java.util.zip.DeflaterOutputStream used on opensource projects

Example 86 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project freeplane by freeplane.

the class Dictionary method save.

/**
 * Save this dictionary to the OutputStream. The data will be compressed. After finish the OutputStream is closed.
 * @param stream the OutputStream
 * @throws IOException if an I/O error occurs.
 */
public void save(final OutputStream stream) throws IOException {
    final Deflater deflater = new Deflater();
    deflater.setLevel(Deflater.BEST_COMPRESSION);
    final DeflaterOutputStream zip = new DeflaterOutputStream(stream, deflater);
    for (int i = 0; i < size; i++) {
        zip.write(tree[i]);
        zip.write(tree[i] >> 8);
    }
    zip.flush();
    zip.close();
}

Example 87 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project navajo by Dexels.

the class JavaNetNavajoClientImpl method postNavajo.

private void postNavajo(Navajo inputNavajo, boolean useCompression, HttpURLConnection con) throws IOException {
    if (useCompression) {
        if (forceGzip) {
            con.setRequestProperty("Content-Encoding", "gzip");
            con.setRequestProperty("Accept-Encoding", "gzip");
        } else {
            con.setChunkedStreamingMode(1024);
            con.setRequestProperty("Transfer-Encoding", "chunked");
            con.setRequestProperty("Content-Encoding", "jzlib");
            con.setRequestProperty("Accept-Encoding", "jzlib");
        }
        BufferedWriter out = null;
        try {
            if (forceGzip) {
                out = new BufferedWriter(new OutputStreamWriter(new GZIPOutputStream(con.getOutputStream()), StandardCharsets.UTF_8));
            } else {
                out = new BufferedWriter(new OutputStreamWriter(new DeflaterOutputStream(con.getOutputStream()), StandardCharsets.UTF_8));
            }
            inputNavajo.write(out);
        } finally {
            if (out != null) {
                try {
                    out.flush();
                    out.close();
                } catch (IOException e) {
                    logger.error("Error: ", e);
                }
            }
        }
    } else {
        con.setRequestProperty("noCompression", "true");
        try (BufferedWriter os = new BufferedWriter(new OutputStreamWriter(con.getOutputStream(), StandardCharsets.UTF_8))) {
            inputNavajo.write(os);
        }
    }
}

Example 88 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project pdfbox by apache.

the class FlateFilter method encode.

@Override
protected void encode(InputStream input, OutputStream encoded, COSDictionary parameters) throws IOException {
    int compressionLevel = getCompressionLevel();
    Deflater deflater = new Deflater(compressionLevel);
    try (DeflaterOutputStream out = new DeflaterOutputStream(encoded, deflater)) {
        IOUtils.copy(input, out);
    }
    encoded.flush();
    deflater.end();
}

Example 89 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project jjwt by jwtk.

the class DeflateCompressionCodec method doCompress.

@Override
public byte[] doCompress(byte[] payload) throws IOException {
    Deflater deflater = new Deflater(Deflater.BEST_COMPRESSION);
    ByteArrayOutputStream outputStream = null;
    DeflaterOutputStream deflaterOutputStream = null;
    try {
        outputStream = new ByteArrayOutputStream();
        deflaterOutputStream = new DeflaterOutputStream(outputStream, deflater, true);
        deflaterOutputStream.write(payload, 0, payload.length);
        deflaterOutputStream.flush();
        return outputStream.toByteArray();
    } finally {
        Objects.nullSafeClose(outputStream, deflaterOutputStream);
    }
}

Example 90 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project bigbluebutton by bigbluebutton.

the class ScreenVideoEncoder method encodePixelsSVC2.

public static byte[] encodePixelsSVC2(int[] pixels, int width, int height) {
    changePixelScanFromBottomLeftToTopRight(pixels, width, height);
    if (paletteIndex == null)
        createPaletteIndex();
    try {
        // TODO calibrate initial size
        ByteArrayOutputStream baos1 = new ByteArrayOutputStream();
        for (int i = 0; i < pixels.length; i++) {
            writeAs15_7(pixels[i], baos1);
        }
        // baos2 contains everything from IMAGEBLOCKV2 except the DataSize field
        // TODO calibrate initial size
        ByteArrayOutputStream baos2 = new ByteArrayOutputStream();
        // IMAGEFORMAT:
        // ColorDepth: UB[2] 10 (15/7 hybrid color image); HasDiffBlocks: UB[1] 0; Zlib prime stuff (2 bits) not used (0)
        baos2.write(16);
        // No ImageBlockHeader (IMAGEDIFFPOSITION, IMAGEPRIMEPOSITION)
        Deflater deflater = new Deflater(Deflater.BEST_COMPRESSION);
        DeflaterOutputStream deflateroutputstream = new DeflaterOutputStream(baos2, deflater);
        deflateroutputstream.write(baos1.toByteArray());
        deflateroutputstream.finish();
        byte[] dataBuffer = baos2.toByteArray();
        // DataSize field
        int dataSize = dataBuffer.length;
        // TODO calibrate initial size
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        writeShort(((OutputStream) (baos)), dataSize);
        // Data
        baos.write(dataBuffer, 0, dataSize);
        return baos.toByteArray();
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}