DOS SC2 .ani (frame-pack) unpacker; first version

git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@1542 8092fc87-c524-0410-9efc-e669fe64eaf9
2005-02-17 01:26:11 +00:00
parent 866b2159f4
commit 7dcdc701bc
7 changed files with 2314 additions and 0 deletions
@@ -0,0 +1,72 @@
+/**************************************************************
+    lzhuf.h
+
+	Lib-like reentrant definition of lzhuf.c
+	Please see lzhuf.c for authorship info
+**************************************************************/
+
+#ifndef LZHUF_H_INCL_
+#define LZHUF_H_INCL_
+
+/********** LZSS compression **********/
+
+#define LZHUF_N         4096    /* buffer size */
+#define LZHUF_F         60  /* lookahead buffer size */
+#define LZHUF_THRESHOLD 2
+#define LZHUF_NIL     LZHUF_N   /* leaf of tree */
+
+/* Huffman coding */
+
+#define LZHUF_N_CHAR      (256 - LZHUF_THRESHOLD + LZHUF_F)
+                /* kinds of characters (character code = 0..LZHUF_N_CHAR-1) */
+#define LZHUF_T       (LZHUF_N_CHAR * 2 - 1)    /* size of table */
+#define LZHUF_R       (LZHUF_T - 1)         /* position of root */
+#define LZHUF_MAX_FREQ    0x8000      /* updates tree when the */
+
+
+typedef void* lzhuf_handle_t;
+
+typedef struct
+{
+	unsigned long int codesize;
+	unsigned char text_buf[LZHUF_N + LZHUF_F - 1];
+	int match_position;
+	int match_length;
+	int lson[LZHUF_N + 1];
+	int rson[LZHUF_N + 257];
+	int dad[LZHUF_N + 1];
+
+	unsigned freq[LZHUF_T + 1]; /* frequency table */
+
+	int prnt[LZHUF_T + LZHUF_N_CHAR]; /* pointers to parent nodes, except for the */
+            /* elements [LZHUF_T..LZHUF_T + LZHUF_N_CHAR - 1] which are used to get */
+            /* the positions of leaves corresponding to the codes. */
+
+	int son[LZHUF_T];   /* pointers to child nodes (son[], son[] + 1) */
+
+	unsigned getbuf;
+	unsigned char getlen;
+	
+	unsigned putbuf;
+	unsigned char putlen;
+
+	/* user-settable data */
+	void* userdata;
+
+	lzhuf_handle_t infile;
+	lzhuf_handle_t outfile;
+
+	size_t (* read)(void*, size_t, size_t, lzhuf_handle_t);
+	size_t (* write)(const void*, size_t, size_t, lzhuf_handle_t);
+	int (* seek)(lzhuf_handle_t, long, int);
+	long (* tell)(lzhuf_handle_t);
+
+} lzhuf_session_t;
+
+void lzhuf_startSession(lzhuf_session_t *);
+void lzhuf_endSession(lzhuf_session_t *);
+int lzhuf_encode(lzhuf_session_t *);  /* compression */
+int lzhuf_decode(lzhuf_session_t *);  /* recover */
+
+
+#endif /* LZHUF_H_INCL_ */