embedaddon/miniupnpd/codelength.h - diff

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version 1.1, 2012/02/21 23:16:02	version 1.1.1.2, 2013/07/22 00:32:35
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/* $Id$ */	/* $Id$ */
/* Project : miniupnp	/* Project : miniupnp
* Author : Thomas BERNARD	* Author : Thomas BERNARD
* copyright (c) 2005-2008 Thomas Bernard	* copyright (c) 2005-2011 Thomas Bernard
* This software is subjet to the conditions detailed in the	* This software is subjet to the conditions detailed in the
* provided LICENCE file. */	* provided LICENCE file. */
#ifndef __CODELENGTH_H__	#ifndef CODELENGTH_H_INCLUDED
#define __CODELENGTH_H__	#define CODELENGTH_H_INCLUDED

/* Encode length by using 7bit per Byte :	/* Encode length by using 7bit per Byte :
* Most significant bit of each byte specifies that the	* Most significant bit of each byte specifies that the
* following byte is part of the code */	* following byte is part of the code */
#define DECODELENGTH(n, p) n = 0; \	#define DECODELENGTH(n, p) n = 0; \
do { n = (n << 7) \| (*p & 0x7f); } \	do { n = (n << 7) \| (*p & 0x7f); } \
while(*(p++)&0x80);	while((*(p++)&0x80) && (n<(1<<25)));

	#define DECODELENGTH_CHECKLIMIT(n, p, p_limit) \
	n = 0; \
	do { \
	if((p) >= (p_limit)) break; \
	n = (n << 7) \| (*(p) & 0x7f); \
	} while((*((p)++)&0x80) && (n<(1<<25)));

#define CODELENGTH(n, p) if(n>=268435456) *(p++) = (n >> 28) \| 0x80; \	#define CODELENGTH(n, p) if(n>=268435456) *(p++) = (n >> 28) \| 0x80; \
if(n>=2097152) *(p++) = (n >> 21) \| 0x80; \	if(n>=2097152) *(p++) = (n >> 21) \| 0x80; \