wrap.h

lzo-1.08-src.zip 高效的压缩解压代码

/* wrap.h -- wrapper functions

   This file is part of the LZO real-time data compression library.

   Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer
   All Rights Reserved.

   The LZO library is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2 of
   the License, or (at your option) any later version.

   The LZO library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with the LZO library; see the file COPYING.
   If not, write to the Free Software Foundation, Inc.,
   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

   Markus F.X.J. Oberhumer
   <[e-mail]>
 */


/*************************************************************************
// compression levels of LZO1X-999 and LZO1Y-999
**************************************************************************/

#if defined(HAVE_LZO1X_H) && !defined(LZO_999_UNSUPPORTED)

LZO_PRIVATE(int)
lzo1x_999_1_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1x_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 1);
}

LZO_PRIVATE(int)
lzo1x_999_2_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1x_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 2);
}

LZO_PRIVATE(int)
lzo1x_999_3_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1x_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 3);
}

LZO_PRIVATE(int)
lzo1x_999_4_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1x_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 4);
}

LZO_PRIVATE(int)
lzo1x_999_5_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1x_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 5);
}

LZO_PRIVATE(int)
lzo1x_999_6_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1x_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 6);
}

LZO_PRIVATE(int)
lzo1x_999_7_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1x_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 7);
}

LZO_PRIVATE(int)
lzo1x_999_8_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1x_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 8);
}

LZO_PRIVATE(int)
lzo1x_999_9_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1x_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 9);
}

#endif


#if defined(HAVE_LZO1Y_H) && !defined(LZO_999_UNSUPPORTED)

LZO_PRIVATE(int)
lzo1y_999_1_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1y_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 1);
}

LZO_PRIVATE(int)
lzo1y_999_2_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1y_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 2);
}

LZO_PRIVATE(int)
lzo1y_999_3_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1y_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 3);
}

LZO_PRIVATE(int)
lzo1y_999_4_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1y_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 4);
}

LZO_PRIVATE(int)
lzo1y_999_5_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1y_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 5);
}

LZO_PRIVATE(int)
lzo1y_999_6_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1y_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 6);
}

LZO_PRIVATE(int)
lzo1y_999_7_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1y_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 7);
}

LZO_PRIVATE(int)
lzo1y_999_8_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1y_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 8);
}

LZO_PRIVATE(int)
lzo1y_999_9_compress    ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	return lzo1y_999_compress_level(src, src_len, dst, dst_len, wrkmem,
	                                dict, dict_len, 0, 9);
}

#endif


/*************************************************************************
// other wrappers (pseudo compressors)
**************************************************************************/

LZO_PRIVATE(int)
memcpy_x_compress       ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	lzo_memcpy(dst,src,src_len);
	*dst_len = src_len;
	if (wrkmem) wrkmem = 0;	/* avoid warning */
	return 0;
}


LZO_PRIVATE(int)
memset_x_compress       ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	lzo_memset(dst,0,src_len);
	*dst_len = src_len;
	if (src) src = 0;		/* avoid warning */
	if (wrkmem) wrkmem = 0;	/* avoid warning */
	return 0;
}


LZO_PRIVATE(int)
adler32_x_compress      ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	lzo_uint32 adler;
	adler = lzo_adler32(0, NULL, 0);
	adler = lzo_adler32(adler, dst, src_len);
	*dst_len = src_len;
	if (src) src = 0;		/* avoid warning */
	if (wrkmem) wrkmem = 0;	/* avoid warning */
	return 0;
}


LZO_PRIVATE(int)
crc32_x_compress        ( const lzo_byte *src, lzo_uint  src_len,
                                lzo_byte *dst, lzo_uintp dst_len,
                                lzo_voidp wrkmem )
{
	lzo_uint32 crc;
	crc = lzo_crc32(0, NULL, 0);
	crc = lzo_crc32(crc, dst, src_len);
	*dst_len = src_len;
	if (src) src = 0;		/* avoid warning */
	if (wrkmem) wrkmem = 0;	/* avoid warning */
	return 0;
}


#if defined(MFX)
#  include "maint/t_wrap.ch"
#endif


/*
vi:ts=4:et
*/