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commit 9ae37cd0ea
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+/* lzo1a_99.c -- implementation of the LZO1A-99 algorithm
+
+   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
+   <markus@oberhumer.com>
+ */
+
+
+
+#include <lzoconf.h>
+#if !defined(LZO_99_UNSUPPORTED)
+
+#define COMPRESS_ID		99
+
+#define DDBITS			3
+#define CLEVEL			9
+
+
+/***********************************************************************
+//
+************************************************************************/
+
+#define LZO_NEED_DICT_H
+#include "config1a.h"
+
+
+/***********************************************************************
+// compression internal entry point.
+************************************************************************/
+
+static int
+_lzo1a_do_compress ( const lzo_byte *in,  lzo_uint  in_len,
+                           lzo_byte *out, lzo_uintp out_len,
+                           lzo_voidp wrkmem,
+                           lzo_compress_t func )
+{
+	int r;
+
+	/* don't try to compress a block that's too short */
+	if (in_len <= 0)
+	{
+		*out_len = 0;
+		r = LZO_E_OK;
+	}
+	else if (in_len <= MIN_LOOKAHEAD + 1)
+	{
+#if defined(LZO_RETURN_IF_NOT_COMPRESSIBLE)
+		*out_len = 0;
+		r = LZO_E_NOT_COMPRESSIBLE;
+#else
+		*out_len = STORE_RUN(out,in,in_len) - out;
+		r = (*out_len > in_len) ? LZO_E_OK : LZO_E_ERROR;
+#endif
+	}
+	else
+		r = func(in,in_len,out,out_len,wrkmem);
+
+	return r;
+}
+
+
+/***********************************************************************
+//
+************************************************************************/
+
+#if !defined(COMPRESS_ID)
+#define COMPRESS_ID		_LZO_ECONCAT2(DD_BITS,CLEVEL)
+#endif
+
+
+#define LZO_CODE_MATCH_INCLUDE_FILE		"lzo1a_cm.ch"
+#include "lzo1b_c.ch"
+
+
+/***********************************************************************
+//
+************************************************************************/
+
+#define LZO_COMPRESS \
+	_LZO_ECONCAT3(lzo1a_,COMPRESS_ID,_compress)
+
+#define LZO_COMPRESS_FUNC \
+	_LZO_ECONCAT3(_lzo1a_,COMPRESS_ID,_compress_func)
+
+
+/***********************************************************************
+//
+************************************************************************/
+
+LZO_PUBLIC(int)
+LZO_COMPRESS ( const lzo_byte *in,  lzo_uint  in_len,
+                     lzo_byte *out, lzo_uintp out_len,
+                     lzo_voidp wrkmem )
+{
+#if defined(__LZO_QUERY_COMPRESS)
+	if (__LZO_IS_COMPRESS_QUERY(in,in_len,out,out_len,wrkmem))
+		return __LZO_QUERY_COMPRESS(in,in_len,out,out_len,wrkmem,D_SIZE,lzo_sizeof(lzo_dict_t));
+#endif
+
+	return _lzo1a_do_compress(in,in_len,out,out_len,wrkmem,do_compress);
+}
+
+#endif
+
+/*
+vi:ts=4:et
+*/