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3ecd809 Jun 10, 2015
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/*********************************************************************
Blosc - Blocked Shuffling and Compression Library
Author: Francesc Alted <francesc@blosc.org>
See LICENSES/BLOSC.txt for details about copyright and rights to use.
**********************************************************************/
/*********************************************************************
The code in this file is heavily based on FastLZ, a lightning-fast
lossless compression library. See LICENSES/FASTLZ.txt for details
about copyright and rights to use.
**********************************************************************/
#ifndef BLOSCLZ_H
#define BLOSCLZ_H
#if defined (__cplusplus)
extern "C" {
#endif
/**
Compress a block of data in the input buffer and returns the size of
compressed block. The size of input buffer is specified by
length. The minimum input buffer size is 16.
The output buffer must be at least 5% larger than the input buffer
and can not be smaller than 66 bytes.
If the input is not compressible, or output does not fit in maxout
bytes, the return value will be 0 and you will have to discard the
output buffer.
The acceleration parameter is related with the frequency for
updating the internal hash. An acceleration of 1 means that the
internal hash is updated at full rate. A value < 1 is not allowed
and will be silently set to 1.
The input buffer and the output buffer can not overlap.
*/
int blosclz_compress(const int opt_level, const void* input, int length,
void* output, int maxout, int accel);
/**
Decompress a block of compressed data and returns the size of the
decompressed block. If error occurs, e.g. the compressed data is
corrupted or the output buffer is not large enough, then 0 (zero)
will be returned instead.
The input buffer and the output buffer can not overlap.
Decompression is memory safe and guaranteed not to write the output buffer
more than what is specified in maxout.
*/
int blosclz_decompress(const void* input, int length, void* output, int maxout);
#if defined (__cplusplus)
}
#endif
#endif /* BLOSCLZ_H */