SZS 2.38a

1 files changed, 200 insertions, 0 deletions

diff --git a/project/src/lib-lzma.h b/project/src/lib-lzma.h
new file mode 100644
index 0000000..632d305
--- /dev/null
+++ b/project/src/lib-lzma.h
@@ -0,0 +1,200 @@
+
+/***************************************************************************
+ *                         _______ _______ _______                         *
+ *                        |  ___  |____   |  ___  |                        *
+ *                        | |   |_|    / /| |   |_|                        *
+ *                        | |_____    / / | |_____                         *
+ *                        |_____  |  / /  |_____  |                        *
+ *                         _    | | / /    _    | |                        *
+ *                        | |___| |/ /____| |___| |                        *
+ *                        |_______|_______|_______|                        *
+ *                                                                         *
+ *                            Wiimms SZS Tools                             *
+ *                          https://szs.wiimm.de/                          *
+ *                                                                         *
+ ***************************************************************************
+ *                                                                         *
+ *   This file is part of the SZS project.                                 *
+ *   Visit https://szs.wiimm.de/ for project details and sources.          *
+ *                                                                         *
+ *   Copyright (c) 2011-2023 by Dirk Clemens <wiimm@wiimm.de>              *
+ *                                                                         *
+ ***************************************************************************
+ *                                                                         *
+ *   This program 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.                                   *
+ *                                                                         *
+ *   This program 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.                          *
+ *                                                                         *
+ *   See file gpl-2.0.txt or http://www.gnu.org/licenses/gpl-2.0.txt       *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef SZS_LIB_LZMA_H
+#define SZS_LIB_LZMA_H 1
+
+#define _GNU_SOURCE 1
+
+#include "lib-std.h"
+
+//
+///////////////////////////////////////////////////////////////////////////////
+///////////////			  definitions			///////////////
+///////////////////////////////////////////////////////////////////////////////
+
+#define LZMA_MAGIC_NUM3		0x5d0000		// 3 relevant bytes
+#define XZ_MAGIC_NUM6		0xfd377a585a00ull	// 6 relevant bytes
+
+#define LZMA_DEFAULT_COMPR	6
+
+//
+///////////////////////////////////////////////////////////////////////////////
+///////////////			  helpers			///////////////
+///////////////////////////////////////////////////////////////////////////////
+
+int IsLZ
+(
+    // returns
+    // -1:    not LZ data
+    //	0:    seems to be LZ; compression level is unknown
+    //  1..9: seems to be LZ; compression level is returned
+
+    cvp			data,		// NULL or data to investigate
+    uint		size		// size of 'data'
+);
+
+//-----------------------------------------------------------------------------
+
+int IsLZMA
+(
+    // returns
+    // -1:    not LZMA data
+    //	0:    seems to be LZMA data; compression level is unknown
+    //  1..9: seems to be LZMA data; compression level is returned
+
+    cvp			data,		// NULL or data to investigate
+    uint		size		// size of 'data'
+);
+
+//-----------------------------------------------------------------------------
+
+int CalcCompressionLevelLZMA
+(
+    int			compr_level	// valid are 1..9 / 0: use default value
+);
+
+//-----------------------------------------------------------------------------
+
+int GetDicSizeByLevel ( int level );
+int GetComprLevelLZMA ( u32 dict_size );
+
+//-----------------------------------------------------------------------------
+
+int IsXZ
+(
+    // returns
+    // -1:    not XZ data
+    //	0:    seems to be LZMA data; compression level is unknown
+    //  1..9: seems to be LZMA data; compression level is returned
+
+    cvp			data,		// NULL or data to investigate
+    uint		size		// size of 'data'
+);
+
+//-----------------------------------------------------------------------------
+
+ccp GetMessageLZMA
+(
+    int			err,		// error code
+    ccp			unkown_error	// result for unkown error codes
+);
+
+//
+///////////////////////////////////////////////////////////////////////////////
+///////////////			    Encode LZMA			///////////////
+///////////////////////////////////////////////////////////////////////////////
+
+enumError EncodeLZMAbuf
+(
+    void		*dest,		// valid destination buffer
+    uint		dest_size,	// size of 'dest'
+    uint		*dest_written,	// store num bytes written to 'dest', never NULL
+
+    const void		*src,		// source buffer
+    uint		src_size,	// size of source buffer
+
+    int			compr_level,	// valid are 1..9 / 0: use default value
+    bool		add_dec_size	// true: add decompressed size
+);
+
+//-----------------------------------------------------------------------------
+
+enumError EncodeLZMA
+(
+    u8			**dest_ptr,	// result: store destination buffer addr
+    uint		*dest_written,	// store num bytes written to 'dest', never NULL
+
+    bool		use_iobuf,	// true: allow the usage of 'iobuf'
+    uint		header_size,	// insert 'header_size' bytes before dest data
+    bool		add_dec_size,	// true: add decompressed size
+
+    const void		*src,		// source buffer
+    uint		src_size,	// size of source buffer
+
+    int			compr_level	// valid are 1..9 / 0: use default value
+);
+
+//
+///////////////////////////////////////////////////////////////////////////////
+///////////////			    Decode LZMA			///////////////
+///////////////////////////////////////////////////////////////////////////////
+
+enumError DecodeLZMAbin
+(
+    u8			**dest_ptr,	// result: store destination buffer addr
+    uint		*dest_written,	// store num bytes written to 'dest', never NULL
+    uint		header_size,	// insert 'header_size' bytes before dest data
+
+    const void		*src,		// source buffer
+    uint		src_size	// size of source buffer
+);
+
+///////////////////////////////////////////////////////////////////////////////
+
+enumError DecodeLZMApart
+(
+    // decompress until dest buffer full or end of source reached
+    // return ERR_WARNING for an incomplete decompression
+
+    void		*dest_buf,	// result: store read data here
+    uint		dest_size,	// size of 'dest_buf'
+    uint		*dest_written,	// store num bytes written to 'dest_ptr', never NULL
+
+    const void		*src,		// source buffer
+    uint		src_size	// size of source buffer
+);
+
+///////////////////////////////////////////////////////////////////////////////
+
+enumError DecodeLZMAsize
+(
+    u8			**dest_ptr,	// result: store destination buffer addr
+    uint		*dest_written,	// store num bytes written to 'dest', never NULL
+    uint		header_size,	// insert 'header_size' bytes before dest data
+
+    const void		*src,		// source buffer, first 4 bytes = dest size
+    uint		src_size	// size of source buffer
+);
+
+//
+///////////////////////////////////////////////////////////////////////////////
+///////////////				END			///////////////
+///////////////////////////////////////////////////////////////////////////////
+
+#endif // SZS_LIB_LZMA_H 1
+