diff options
Diffstat (limited to 'external/miniupnpc/codelength.h')
| -rw-r--r-- | external/miniupnpc/codelength.h | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/external/miniupnpc/codelength.h b/external/miniupnpc/codelength.h index 50d460679..ea0b005ff 100644 --- a/external/miniupnpc/codelength.h +++ b/external/miniupnpc/codelength.h @@ -1,7 +1,7 @@ /* $Id: codelength.h,v 1.3 2011/07/30 13:10:05 nanard Exp $ */ /* Project : miniupnp * Author : Thomas BERNARD - * copyright (c) 2005-2011 Thomas Bernard + * copyright (c) 2005-2015 Thomas Bernard * This software is subjet to the conditions detailed in the * provided LICENCE file. */ #ifndef CODELENGTH_H_INCLUDED @@ -10,10 +10,30 @@ /* Encode length by using 7bit per Byte : * Most significant bit of each byte specifies that the * following byte is part of the code */ + +/* n : unsigned + * p : unsigned char * + */ #define DECODELENGTH(n, p) n = 0; \ do { n = (n << 7) | (*p & 0x7f); } \ while((*(p++)&0x80) && (n<(1<<25))); +/* n : unsigned + * READ : function/macro to read one byte (unsigned char) + */ +#define DECODELENGTH_READ(n, READ) \ + n = 0; \ + do { \ + unsigned char c; \ + READ(c); \ + n = (n << 7) | (c & 0x07f); \ + if(!(c&0x80)) break; \ + } while(n<(1<<25)); + +/* n : unsigned + * p : unsigned char * + * p_limit : unsigned char * + */ #define DECODELENGTH_CHECKLIMIT(n, p, p_limit) \ n = 0; \ do { \ @@ -21,11 +41,14 @@ n = (n << 7) | (*(p) & 0x7f); \ } while((*((p)++)&0x80) && (n<(1<<25))); + +/* n : unsigned + * p : unsigned char * + */ #define CODELENGTH(n, p) if(n>=268435456) *(p++) = (n >> 28) | 0x80; \ if(n>=2097152) *(p++) = (n >> 21) | 0x80; \ if(n>=16384) *(p++) = (n >> 14) | 0x80; \ if(n>=128) *(p++) = (n >> 7) | 0x80; \ *(p++) = n & 0x7f; -#endif - +#endif /* CODELENGTH_H_INCLUDED */ |