BrotliDecoder.java — netty Source File

Source Code

/*
 * Copyright 2021 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.handler.codec.compression;

import com.aayushatharva.brotli4j.decoder.DecoderJNI;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.util.internal.ObjectUtil;

import java.nio.ByteBuffer;
import java.util.List;

/**
 * Decompresses a {@link ByteBuf} encoded with the brotli format.
 *
 * See <a href="https://github.com/google/brotli">brotli</a>.
 */
public final class BrotliDecoder extends ByteToMessageDecoder {

    private enum State {
        DONE, NEEDS_MORE_INPUT, ERROR
    }

    static {
        try {
            Brotli.ensureAvailability();
        } catch (Throwable throwable) {
            throw new ExceptionInInitializerError(throwable);
        }
    }

    private final int inputBufferSize;
    private DecoderJNI.Wrapper decoder;
    private boolean destroyed;
    private boolean needsRead;

    /**
     * Creates a new BrotliDecoder with a default 8kB input buffer
     */
    public BrotliDecoder() {
        this(8 * 1024);
    }

    /**
     * Creates a new BrotliDecoder
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