Code cleanup / speedup and preparing for LZX.

RW4ArchiveTool/Archives/Compression/lzx/lzx.h

@@ -0,0 +1,60 @@
+#pragma once
+
+/***************************************************************************
+*                        lzx.h - LZX decompression routines               *
+*                           -------------------                           *
+*                                                                         *
+*  maintainer: Jed Wing <jedwin@ugcs.caltech.edu>                         *
+*  source:     modified lzx.c from cabextract v0.5                        *
+*  notes:      This file was taken from cabextract v0.5, which was,       *
+*              itself, a modified version of the lzx decompression code   *
+*              from unlzx.                                                *
+***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   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.  Note that an exemption to this   *
+ *   license has been granted by Stuart Caie for the purposes of           *
+ *   distribution with chmlib.  This does not, to the best of my           *
+ *   knowledge, constitute a change in the license of this (the LZX) code  *
+ *   in general.                                                           *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef INCLUDED_LZX_H
+#define INCLUDED_LZX_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+  /* return codes */
+#define DECR_OK (0)
+#define DECR_DATAFORMAT (1)
+#define DECR_ILLEGALDATA (2)
+#define DECR_NOMEMORY (3)
+
+/* opaque state structure */
+  struct lzx_state;
+
+  /* create an lzx state object */
+  struct lzx_state* lzx_init(int window);
+
+  /* destroy an lzx state object */
+  void lzx_teardown(struct lzx_state* pState);
+
+  /* reset an lzx stream */
+  void lzx_reset(struct lzx_state* pState);
+
+  /* decompress an LZX compressed block */
+  int lzx_decompress(struct lzx_state* pState, unsigned char* inpos, unsigned char* outpos, int inlen,
+    int outlen);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* INCLUDED_LZX_H */