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181 lines
6.6 KiB
C
181 lines
6.6 KiB
C
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/* lzo1x.h -- public interface of the LZO1X compression algorithm
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This file is part of the LZO real-time data compression library.
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Copyright (C) 2011 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2010 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2009 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
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All Rights Reserved.
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The LZO library is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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The LZO library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the LZO library; see the file COPYING.
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If not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Markus F.X.J. Oberhumer
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<markus@oberhumer.com>
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http://www.oberhumer.com/opensource/lzo/
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*/
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#ifndef __LZO1X_H_INCLUDED
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#define __LZO1X_H_INCLUDED 1
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#ifndef __LZOCONF_H_INCLUDED
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#include "lzoconf.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/***********************************************************************
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//
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************************************************************************/
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/* Memory required for the wrkmem parameter.
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* When the required size is 0, you can also pass a NULL pointer.
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*/
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#define LZO1X_MEM_COMPRESS LZO1X_1_MEM_COMPRESS
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#define LZO1X_MEM_DECOMPRESS (0)
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#define LZO1X_MEM_OPTIMIZE (0)
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/* decompression */
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LZO_EXTERN(int)
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lzo1x_decompress ( const lzo_bytep src, lzo_uint src_len,
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lzo_bytep dst, lzo_uintp dst_len,
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lzo_voidp wrkmem /* NOT USED */ );
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/* safe decompression with overrun testing */
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LZO_EXTERN(int)
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lzo1x_decompress_safe ( const lzo_bytep src, lzo_uint src_len,
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lzo_bytep dst, lzo_uintp dst_len,
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lzo_voidp wrkmem /* NOT USED */ );
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/***********************************************************************
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//
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************************************************************************/
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#define LZO1X_1_MEM_COMPRESS ((lzo_uint32) (16384L * lzo_sizeof_dict_t))
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LZO_EXTERN(int)
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lzo1x_1_compress ( const lzo_bytep src, lzo_uint src_len,
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lzo_bytep dst, lzo_uintp dst_len,
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lzo_voidp wrkmem );
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/***********************************************************************
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// special compressor versions
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************************************************************************/
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/* this version needs only 8 KiB work memory */
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#define LZO1X_1_11_MEM_COMPRESS ((lzo_uint32) (2048L * lzo_sizeof_dict_t))
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LZO_EXTERN(int)
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lzo1x_1_11_compress ( const lzo_bytep src, lzo_uint src_len,
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lzo_bytep dst, lzo_uintp dst_len,
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lzo_voidp wrkmem );
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/* this version needs 16 KiB work memory */
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#define LZO1X_1_12_MEM_COMPRESS ((lzo_uint32) (4096L * lzo_sizeof_dict_t))
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LZO_EXTERN(int)
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lzo1x_1_12_compress ( const lzo_bytep src, lzo_uint src_len,
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lzo_bytep dst, lzo_uintp dst_len,
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lzo_voidp wrkmem );
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/* use this version if you need a little more compression speed */
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#define LZO1X_1_15_MEM_COMPRESS ((lzo_uint32) (32768L * lzo_sizeof_dict_t))
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LZO_EXTERN(int)
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lzo1x_1_15_compress ( const lzo_bytep src, lzo_uint src_len,
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lzo_bytep dst, lzo_uintp dst_len,
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lzo_voidp wrkmem );
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/***********************************************************************
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// better compression ratio at the cost of more memory and time
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************************************************************************/
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#define LZO1X_999_MEM_COMPRESS ((lzo_uint32) (14 * 16384L * sizeof(short)))
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LZO_EXTERN(int)
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lzo1x_999_compress ( const lzo_bytep src, lzo_uint src_len,
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lzo_bytep dst, lzo_uintp dst_len,
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lzo_voidp wrkmem );
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/***********************************************************************
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//
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************************************************************************/
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LZO_EXTERN(int)
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lzo1x_999_compress_dict ( const lzo_bytep src, lzo_uint src_len,
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lzo_bytep dst, lzo_uintp dst_len,
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lzo_voidp wrkmem,
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const lzo_bytep dict, lzo_uint dict_len );
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LZO_EXTERN(int)
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lzo1x_999_compress_level ( const lzo_bytep src, lzo_uint src_len,
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lzo_bytep dst, lzo_uintp dst_len,
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lzo_voidp wrkmem,
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const lzo_bytep dict, lzo_uint dict_len,
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lzo_callback_p cb,
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int compression_level );
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LZO_EXTERN(int)
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lzo1x_decompress_dict_safe ( const lzo_bytep src, lzo_uint src_len,
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lzo_bytep dst, lzo_uintp dst_len,
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lzo_voidp wrkmem /* NOT USED */,
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const lzo_bytep dict, lzo_uint dict_len );
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/***********************************************************************
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// optimize a compressed data block
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************************************************************************/
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LZO_EXTERN(int)
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lzo1x_optimize ( lzo_bytep src, lzo_uint src_len,
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lzo_bytep dst, lzo_uintp dst_len,
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lzo_voidp wrkmem /* NOT USED */ );
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* already included */
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/* vim:set ts=4 et: */
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