| package org.brotli.dec; |
| |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| public class Decoder { |
| private static long decodeBytes(InputStream input, OutputStream output, byte[] buffer) |
| throws IOException { |
| long totalOut = 0; |
| int readBytes; |
| BrotliInputStream in = new BrotliInputStream(input); |
| in.enableLargeWindow(); |
| try { |
| while ((readBytes = in.read(buffer)) >= 0) { |
| output.write(buffer, 0, readBytes); |
| totalOut += readBytes; |
| } |
| } finally { |
| in.close(); |
| } |
| return totalOut; |
| } |
| |
| public static void main(String... args) throws IOException { |
| if (args.length != 2) { |
| System.out.println("Usage: decoder <compressed_in> <decompressed_out>"); |
| return; |
| } |
| |
| byte[] buffer = new byte[1024 * 1024]; |
| long start; |
| long bytesDecoded; |
| long end; |
| InputStream in = null; |
| OutputStream out = null; |
| try { |
| in = new FileInputStream(args[0]); |
| out = new FileOutputStream(args[1]); |
| start = System.nanoTime(); |
| bytesDecoded = decodeBytes(in, out, buffer); |
| end = System.nanoTime(); |
| } finally { |
| if (in != null) { |
| in.close(); // Hopefully, does not throw exception. |
| } |
| if (out != null) { |
| out.close(); |
| } |
| } |
| |
| double timeDelta = (end - start) / 1000000000.0; |
| if (timeDelta <= 0) { |
| return; |
| } |
| double mbDecoded = bytesDecoded / (1024.0 * 1024.0); |
| System.out.println(mbDecoded / timeDelta + " MiB/s"); |
| } |
| } |