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Initial commit of Command & Conquer Red Alert source code.

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LFeenanEA
2025-02-27 16:15:05 +00:00
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/*
** Command & Conquer Red Alert(tm)
** Copyright 2025 Electronic Arts Inc.
**
** 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef HUFFMAN_H
#define HUFFMAN_H
/****************************************************************************
*
* C O N F I D E N T I A L --- W E S T W O O D S T U D I O S
*
*----------------------------------------------------------------------------
*
* FILE
* huffman.h
*
* DESCRIPTION
* Huffman order 0 compress/decompress definitions.
*
* PROGRAMMER
* Denzil E. Long, Jr.
*
* DATE
* May 19, 1995
*
****************************************************************************/
/* TreeNode: Huffman decoding tree node.
*
* count - Weight of the node in the tree.
* child0 - Child node 0
* child1 - Child node 1
*/
typedef struct _TreeNode {
unsigned long count;
unsigned short child0;
unsigned short child1;
} TreeNode;
/* HuffCode: This structure is used for storing the code for each symbol
* during encoding. A table of codes for each symbol is built
* from the Huffman tree.
*
* code - Code used to represent a symbol.
* bits - Length of code in bits.
*/
typedef struct _HuffCode {
unsigned short code;
short bits;
} HuffCode;
#define HUFF_EOS 256 /* End of stream symbol */
/* Prototypes */
#ifdef __cplusplus
extern "C" {
#endif
long __cdecl HuffCompress(unsigned char *data, unsigned char *buffer,
long length, char *work);
long __cdecl HuffDecompress(unsigned char *data, unsigned char *buffer,
long length, char *work);
void __cdecl HuffCount(unsigned char *data, TreeNode *nodes, long length,
long zero);
void __cdecl HuffScaleCounts(TreeNode *nodes);
long __cdecl RLEHuffCounts(TreeNode *nodes, unsigned char *buffer);
long __cdecl BuildHuffTree(TreeNode *nodes);
void __cdecl ConvertToCodes(TreeNode *nodes, HuffCode *codes,
unsigned short code, short bits, short node);
long __cdecl HuffEncode(unsigned char *data, unsigned char *buffer,
HuffCode *codes, long length);
#ifdef __cplusplus
}
#endif
#endif /* HUFFMAN_H */