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authorwdenk <wdenk>2002-03-08 21:31:05 +0000
committerwdenk <wdenk>2002-03-08 21:31:05 +0000
commit012771d88adfb5e0886591880041f05fc8b15bdd (patch)
tree9cd947b8b4c6f05cff5be1b69a0f1ca81b2c86ec /include/jffs2
parent67fc21f34ef642417e7418a0575d5b5ff70d77d8 (diff)
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Initial revision
Diffstat (limited to 'include/jffs2')
-rw-r--r--include/jffs2/compr_rubin.h11
-rw-r--r--include/jffs2/mini_inflate.h82
2 files changed, 93 insertions, 0 deletions
diff --git a/include/jffs2/compr_rubin.h b/include/jffs2/compr_rubin.h
new file mode 100644
index 0000000..f26f476
--- /dev/null
+++ b/include/jffs2/compr_rubin.h
@@ -0,0 +1,11 @@
+/* Rubin encoder/decoder header */
+/* work started at : aug 3, 1994 */
+/* last modification : aug 15, 1994 */
+/* $Id: compr_rubin.h,v 1.1 2002/01/16 23:34:32 nyet Exp $ */
+
+#define RUBIN_REG_SIZE 16
+#define UPPER_BIT_RUBIN (((long) 1)<<(RUBIN_REG_SIZE-1))
+#define LOWER_BITS_RUBIN ((((long) 1)<<(RUBIN_REG_SIZE-1))-1)
+
+void dynrubin_decompress(unsigned char *data_in, unsigned char *cpage_out,
+ unsigned long sourcelen, unsigned long dstlen);
diff --git a/include/jffs2/mini_inflate.h b/include/jffs2/mini_inflate.h
new file mode 100644
index 0000000..f79aac7
--- /dev/null
+++ b/include/jffs2/mini_inflate.h
@@ -0,0 +1,82 @@
+/*-------------------------------------------------------------------------
+ * Filename: mini_inflate.h
+ * Version: $Id: mini_inflate.h,v 1.2 2002/01/17 00:53:20 nyet Exp $
+ * Copyright: Copyright (C) 2001, Russ Dill
+ * Author: Russ Dill <Russ.Dill@asu.edu>
+ * Description: Mini deflate implementation
+ *-----------------------------------------------------------------------*/
+/*
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+typedef __SIZE_TYPE__ size;
+
+#define NO_ERROR 0
+#define COMP_UNKNOWN 1 /* The specififed bytype is invalid */
+#define CODE_NOT_FOUND 2 /* a huffman code in the stream could not be decoded */
+#define TOO_MANY_BITS 3 /* pull_bits was passed an argument that is too
+ * large */
+
+/* This struct represents an entire huffman code set. It has various lookup
+ * tables to speed decoding */
+struct huffman_set {
+ int bits; /* maximum bit length */
+ int num_symbols; /* Number of symbols this code can represent */
+ int *lengths; /* The bit length of symbols */
+ int *symbols; /* All of the symbols, sorted by the huffman code */
+ int *count; /* the number of codes of this bit length */
+ int *first; /* the first code of this bit length */
+ int *pos; /* the symbol that first represents (in the symbols
+ * array) */
+};
+
+struct bitstream {
+ unsigned char *data; /* increments as we move from byte to byte */
+ unsigned char bit; /* 0 to 7 */
+ void *(*memcpy)(void *, const void *, size);
+ unsigned long decoded; /* The number of bytes decoded */
+ int error;
+
+ int distance_count[16];
+ int distance_first[16];
+ int distance_pos[16];
+ int distance_lengths[32];
+ int distance_symbols[32];
+
+ int code_count[8];
+ int code_first[8];
+ int code_pos[8];
+ int code_lengths[19];
+ int code_symbols[19];
+
+ int length_count[16];
+ int length_first[16];
+ int length_pos[16];
+ int length_lengths[288];
+ int length_symbols[288];
+
+ struct huffman_set codes;
+ struct huffman_set lengths;
+ struct huffman_set distance;
+};
+
+#define NO_COMP 0
+#define FIXED_COMP 1
+#define DYNAMIC_COMP 2
+
+long decompress_block(unsigned char *dest, unsigned char *source,
+ void *(*inflate_memcpy)(void *dest, const void *src, size n));