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Annotation of embedaddon/miniupnpd/codelength.h, revision 1.1

1.1     ! misho       1: /* $Id: codelength.h,v 1.1 2008/10/06 22:04:06 nanard Exp $ */
        !             2: /* Project : miniupnp
        !             3:  * Author : Thomas BERNARD
        !             4:  * copyright (c) 2005-2008 Thomas Bernard
        !             5:  * This software is subjet to the conditions detailed in the
        !             6:  * provided LICENCE file. */
        !             7: #ifndef __CODELENGTH_H__
        !             8: #define __CODELENGTH_H__
        !             9: 
        !            10: /* Encode length by using 7bit per Byte :
        !            11:  * Most significant bit of each byte specifies that the
        !            12:  * following byte is part of the code */
        !            13: #define DECODELENGTH(n, p) n = 0; \
        !            14:                            do { n = (n << 7) | (*p & 0x7f); } \
        !            15:                            while(*(p++)&0x80);
        !            16: 
        !            17: #define CODELENGTH(n, p) if(n>=268435456) *(p++) = (n >> 28) | 0x80; \
        !            18:                          if(n>=2097152) *(p++) = (n >> 21) | 0x80; \
        !            19:                          if(n>=16384) *(p++) = (n >> 14) | 0x80; \
        !            20:                          if(n>=128) *(p++) = (n >> 7) | 0x80; \
        !            21:                          *(p++) = n & 0x7f;
        !            22: 
        !            23: #endif
        !            24: