FreeCalypso > hg > freecalypso-reveng
view fluid-mnf/lz.h @ 332:e5db9a45e596
frbl/reconst/serial.c: 0x1d4 static function reconstructed
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 07 Mar 2020 01:32:59 +0000 |
parents | 9cecc930d78f |
children |
line wrap: on
line source
/****************************************************************************** * FLUID (Flash Loader Utility Independent of Device) * * Simple LZ77 compressor (c) Texas Instruments, Jesper Pedersem TI-DK * * $Id: lz.h 1.4 Thu, 31 Oct 2002 13:12:27 +0100 tsj $ * ******************************************************************************/ #ifndef _LZ_H_ #define _LZ_H_ 1 // Algorithmn efficiency constants // Don't compress unless we have a > THRESHOLD match #define THRESHOLD 2 // Number of bits to use for position, when storing a match #define POS_BITS 12 #define POS_MASK 0x0FFF // Number of bits to use for length, when storing a match #define LEN_BITS 4 #define LEN_MASK 0xF000 // Size and size-mask of sliding window #define WINDOW_SIZE (1 << POS_BITS) #define WINDOW_MASK (WINDOW_SIZE - 1) // Maximum match length #define MAX_MATCH ((1 << LEN_BITS) + THRESHOLD) // This structure is only being used by lzdecode/decompress(). struct lz_s { uint8 window[WINDOW_SIZE]; // Sliding window buffer int16 window_pos; // Current window position // Static variables for get_bits() uint32 bitbuf; // buffer for remaining bits uint8 bitbuf_size; // number of bits in buffer // Global input/output buffer pointers and sizes uint8 *buffer_in; uint32 buffer_in_size; uint32 total_in_size; uint8 *buffer_out; uint32 buffer_out_size; uint32 total_out_size; }; void compress_init(void); int compress(char *outbuf, char *inbuf, int size); void decompress_init(struct lz_s *plz); int decompress(struct lz_s *plz, unsigned char *outbuf, unsigned char *inbuf, int size); #endif