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package org.xerial.snappy;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* Snappy compressor/decompressor interface. The implementation can be JNI binding or pure-java Snappy implementation.
*/
public interface SnappyApi
{
// ------------------------------------------------------------------------
// Generic compression/decompression routines.
// ------------------------------------------------------------------------
long rawCompress(long inputAddr, long inputSize, long destAddr)
throws IOException;
long rawUncompress(long inputAddr, long inputSize, long destAddr)
throws IOException;
int rawCompress(ByteBuffer input, int inputOffset, int inputLength, ByteBuffer compressed,
int outputOffset)
throws IOException;
int rawCompress(Object input, int inputOffset, int inputByteLength, Object output, int outputOffset)
throws IOException;
int rawUncompress(ByteBuffer compressed, int inputOffset, int inputLength, ByteBuffer uncompressed,
int outputOffset)
throws IOException;
int rawUncompress(Object input, int inputOffset, int inputLength, Object output, int outputOffset)
throws IOException;
// Returns the maximal size of the compressed representation of
// input data that is "source_bytes" bytes in length;
int maxCompressedLength(int source_bytes);
// This operation takes O(1) time.
int uncompressedLength(ByteBuffer compressed, int offset, int len)
throws IOException;
int uncompressedLength(Object input, int offset, int len)
throws IOException;
long uncompressedLength(long inputAddr, long len)
throws IOException;
boolean isValidCompressedBuffer(ByteBuffer compressed, int offset, int len)
throws IOException;
boolean isValidCompressedBuffer(Object input, int offset, int len)
throws IOException;
boolean isValidCompressedBuffer(long inputAddr, long offset, long len)
throws IOException;
void arrayCopy(Object src, int offset, int byteLength, Object dest, int dOffset)
throws IOException;
}
