パラメータを適応変化させる事により圧縮率を向上させた動的ライス・ゴロム符号を利用した可逆圧縮方式。圧縮ソフト、圧縮率のMATLABシミュレーションは詳細はInterface誌2011年8月号に掲載されるRX62Nマイコン連動特集にて掲載予定。
Lossless_lib/_bitio.h@0:d920d64db582, 2011-03-30 (annotated)
- Committer:
- lynxeyed_atsu
- Date:
- Wed Mar 30 06:05:24 2011 +0000
- Revision:
- 0:d920d64db582
alpha
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
lynxeyed_atsu | 0:d920d64db582 | 1 | #ifndef ___BITIO_H__ |
lynxeyed_atsu | 0:d920d64db582 | 2 | #define ___BITIO_H__ |
lynxeyed_atsu | 0:d920d64db582 | 3 | /* |
lynxeyed_atsu | 0:d920d64db582 | 4 | #define TRUE 1 |
lynxeyed_atsu | 0:d920d64db582 | 5 | #define FALSE 0 |
lynxeyed_atsu | 0:d920d64db582 | 6 | */ |
lynxeyed_atsu | 0:d920d64db582 | 7 | #define rightbits(n, x) ((x) & ((1U << (n)) - 1U)) |
lynxeyed_atsu | 0:d920d64db582 | 8 | |
lynxeyed_atsu | 0:d920d64db582 | 9 | #define OVERRUN 0xffff |
lynxeyed_atsu | 0:d920d64db582 | 10 | #define _lsb_k 0x0b // _lsb_k:0x09 to 0x0b? |
lynxeyed_atsu | 0:d920d64db582 | 11 | |
lynxeyed_atsu | 0:d920d64db582 | 12 | typedef unsigned int Uint; |
lynxeyed_atsu | 0:d920d64db582 | 13 | typedef unsigned char Uchar; |
lynxeyed_atsu | 0:d920d64db582 | 14 | |
lynxeyed_atsu | 0:d920d64db582 | 15 | extern FILE *infp, *outfp; |
lynxeyed_atsu | 0:d920d64db582 | 16 | extern int getcount, putcount; |
lynxeyed_atsu | 0:d920d64db582 | 17 | extern int bitbuf; |
lynxeyed_atsu | 0:d920d64db582 | 18 | |
lynxeyed_atsu | 0:d920d64db582 | 19 | /* Rice Golomb en-decoding */ |
lynxeyed_atsu | 0:d920d64db582 | 20 | extern void decode(void); |
lynxeyed_atsu | 0:d920d64db582 | 21 | extern void encode(long int n); |
lynxeyed_atsu | 0:d920d64db582 | 22 | |
lynxeyed_atsu | 0:d920d64db582 | 23 | |
lynxeyed_atsu | 0:d920d64db582 | 24 | void init_bit_o(void); |
lynxeyed_atsu | 0:d920d64db582 | 25 | void init_bit_i(void); |
lynxeyed_atsu | 0:d920d64db582 | 26 | Uint getbit(void); |
lynxeyed_atsu | 0:d920d64db582 | 27 | Uint getbits(int n); |
lynxeyed_atsu | 0:d920d64db582 | 28 | void putbit(Uint bit); |
lynxeyed_atsu | 0:d920d64db582 | 29 | void putbits(int n, Uint x); |
lynxeyed_atsu | 0:d920d64db582 | 30 | |
lynxeyed_atsu | 0:d920d64db582 | 31 | |
lynxeyed_atsu | 0:d920d64db582 | 32 | |
lynxeyed_atsu | 0:d920d64db582 | 33 | #endif |