| /* |
| * 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.carbondata.core.datastore.compression; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| public interface Compressor { |
| |
| String getName(); |
| |
| ByteBuffer compressByte(ByteBuffer compInput); |
| |
| ByteBuffer compressByte(byte[] unCompInput); |
| |
| byte[] compressByte(byte[] unCompInput, int byteSize); |
| |
| byte[] unCompressByte(byte[] compInput); |
| |
| byte[] unCompressByte(byte[] compInput, int offset, int length); |
| |
| ByteBuffer compressShort(short[] unCompInput); |
| |
| short[] unCompressShort(byte[] compInput, int offset, int length); |
| |
| ByteBuffer compressInt(int[] unCompInput); |
| |
| int[] unCompressInt(byte[] compInput, int offset, int length); |
| |
| ByteBuffer compressLong(long[] unCompInput); |
| |
| long[] unCompressLong(byte[] compInput, int offset, int length); |
| |
| ByteBuffer compressFloat(float[] unCompInput); |
| |
| float[] unCompressFloat(byte[] compInput, int offset, int length); |
| |
| ByteBuffer compressDouble(double[] unCompInput); |
| |
| double[] unCompressDouble(byte[] compInput, int offset, int length); |
| |
| long rawCompress(long inputAddress, int inputSize, long outputAddress) throws IOException; |
| |
| long rawUncompress(byte[] input, byte[] output) throws IOException; |
| |
| long maxCompressedLength(long inputSize); |
| |
| /** |
| * Whether this compressor support zero-copy during compression. |
| * Zero-copy means that the compressor support receiving memory address (pointer) |
| * and returning result in memory address (pointer). |
| * Currently not all java version of the compressors support this feature. |
| * @return true if it supports, otherwise return false |
| */ |
| boolean supportUnsafe(); |
| |
| int unCompressedLength(byte[] data, int offset, int length); |
| |
| int rawUncompress(byte[] data, int offset, int length, byte[] output); |
| |
| boolean supportReusableBuffer(); |
| } |