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BrotliCodec.java
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209 lines (181 loc) · 5.46 KB
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.orc.impl;
import com.aayushatharva.brotli4j.Brotli4jLoader;
import com.aayushatharva.brotli4j.decoder.DecoderJNI;
import com.aayushatharva.brotli4j.encoder.Encoder;
import org.apache.orc.CompressionCodec;
import org.apache.orc.CompressionKind;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* @since 2.0.0
*/
public class BrotliCodec implements CompressionCodec, DirectDecompressionCodec {
// load jni library.
static {
Brotli4jLoader.ensureAvailability();
}
public BrotliCodec() {
}
static class BrotliOptions implements Options {
private Encoder.Mode mode = Encoder.Mode.GENERIC;
private int quality = -1;
private int lgwin = -1;
BrotliOptions() {
}
BrotliOptions(int quality, int lgwin, Encoder.Mode mode) {
this.quality = quality;
this.lgwin = lgwin;
this.mode = mode;
}
@Override
public Options copy() {
return new BrotliOptions(quality, lgwin, mode);
}
@Override
public Options setSpeed(SpeedModifier newValue) {
switch (newValue) {
case FAST:
// best speed + 1.
quality = 1;
break;
case DEFAULT:
// best quality. Keep default with default value.
quality = -1;
break;
case FASTEST:
// best speed.
quality = 0;
break;
default:
break;
}
return this;
}
@Override
public Options setData(DataKind newValue) {
switch (newValue) {
case BINARY:
mode = Encoder.Mode.GENERIC;
break;
case TEXT:
mode = Encoder.Mode.TEXT;
break;
default:
break;
}
return this;
}
public Encoder.Parameters brotli4jParameter() {
return new Encoder.Parameters()
.setQuality(quality).setWindow(lgwin).setMode(mode);
}
}
private static final BrotliCodec.BrotliOptions DEFAULT_OPTIONS = new BrotliOptions();
@Override
public Options getDefaultOptions() {
return DEFAULT_OPTIONS;
}
@Override
public boolean compress(
ByteBuffer in,
ByteBuffer out,
ByteBuffer overflow,
Options options) throws IOException {
BrotliOptions brotliOptions = (BrotliOptions) options;
int inBytes = in.remaining();
byte[] compressed = Encoder.compress(
in.array(), in.arrayOffset() + in.position(), inBytes, brotliOptions.brotli4jParameter());
int outBytes = compressed.length;
if (outBytes < inBytes) {
int remaining = out.remaining();
if (remaining >= outBytes) {
System.arraycopy(compressed, 0, out.array(), out.arrayOffset() +
out.position(), outBytes);
out.position(out.position() + outBytes);
} else {
System.arraycopy(compressed, 0, out.array(), out.arrayOffset() +
out.position(), remaining);
out.position(out.limit());
System.arraycopy(compressed, remaining, overflow.array(),
overflow.arrayOffset(), outBytes - remaining);
overflow.position(outBytes - remaining);
}
return true;
} else {
return false;
}
}
@Override
public void decompress(ByteBuffer in, ByteBuffer out) throws IOException {
int compressedBytes = in.remaining();
DecoderJNI.Wrapper decoder = new DecoderJNI.Wrapper(compressedBytes);
try {
decoder.getInputBuffer().put(in);
decoder.push(compressedBytes);
while (decoder.getStatus() != DecoderJNI.Status.DONE) {
switch (decoder.getStatus()) {
case OK:
decoder.push(0);
break;
case NEEDS_MORE_OUTPUT:
ByteBuffer buffer = decoder.pull();
out.put(buffer);
break;
case NEEDS_MORE_INPUT:
// Give decoder a chance to process the remaining of the buffered byte.
decoder.push(0);
// If decoder still needs input, this means that stream is truncated.
if (decoder.getStatus() == DecoderJNI.Status.NEEDS_MORE_INPUT) {
return;
}
break;
default:
return;
}
}
} finally {
out.flip();
decoder.destroy();
}
}
@Override
public boolean isAvailable() {
return true;
}
@Override
public CompressionKind getKind() {
return CompressionKind.BROTLI;
}
@Override
public void directDecompress(ByteBuffer in, ByteBuffer out) throws IOException {
// decompress work well for both direct and heap.
decompress(in, out);
}
@Override
public void reset() {
}
@Override
public void destroy() {
}
@Override
public void close() {
OrcCodecPool.returnCodec(CompressionKind.BROTLI, this);
}
}