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82 lines
3.3 KiB
Java
Executable File
82 lines
3.3 KiB
Java
Executable File
/*--------------------------------------------------------------------------
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* Copyright 2011 Taro L. Saito
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*--------------------------------------------------------------------------*/
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//--------------------------------------
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// snappy-java Project
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//
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// SnappyNative.java
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// Since: 2011/03/30
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//
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// $URL$
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// $Author$
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//--------------------------------------
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package org.xerial.snappy;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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/**
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* <b>Internal only - Do not use this class.</b> JNI interface of the
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* {@link SnappyNativeAPI} implementation. The native method in this class is
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* defined in SnappyNative.h (genereted by javah) and SnappyNative.cpp
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*
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* <p>
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* <b> DO NOT USE THIS CLASS since the direct use of this class might break the
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* native library code loading in {@link SnappyLoader}. </b>
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* </p>
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*
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* @author leo
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*
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*/
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public class SnappyNative implements SnappyNativeAPI
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{
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public native String nativeLibraryVersion();
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// ------------------------------------------------------------------------
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// Generic compression/decompression routines.
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// ------------------------------------------------------------------------
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public native int rawCompress(ByteBuffer input, int inputOffset, int inputLength, ByteBuffer compressed,
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int outputOffset) throws IOException;
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public native int rawCompress(Object input, int inputOffset, int inputByteLength, Object output, int outputOffset);
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public native int rawUncompress(ByteBuffer compressed, int inputOffset, int inputLength, ByteBuffer uncompressed,
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int outputOffset) throws IOException;
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public native int rawUncompress(Object input, int inputOffset, int inputLength, Object output, int outputOffset)
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throws IOException;
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// Returns the maximal size of the compressed representation of
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// input data that is "source_bytes" bytes in length;
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public native int maxCompressedLength(int source_bytes);
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// This operation takes O(1) time.
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public native int uncompressedLength(ByteBuffer compressed, int offset, int len) throws IOException;
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public native int uncompressedLength(Object input, int offset, int len) throws IOException;
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public native boolean isValidCompressedBuffer(ByteBuffer compressed, int offset, int len) throws IOException;
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public native boolean isValidCompressedBuffer(Object input, int offset, int len) throws IOException;
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public native void arrayCopy(Object src, int offset, int byteLength, Object dest, int dOffset) throws IOException;
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public void throw_error(int errorCode) throws IOException {
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throw new IOException(String.format("%s(%d)", SnappyErrorCode.getErrorMessage(errorCode), errorCode));
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}
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}
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