xdas_wire.h

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/*----------------------------------------------------------------------------
 * Copyright (c) 2006, Novell, Inc.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are 
 * met:
 * 
 *     * Redistributions of source code must retain the above copyright 
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright 
 *       notice, this list of conditions and the following disclaimer in the 
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Novell nor the names of its contributors 
 *       may be used to endorse or promote products derived from this 
 *       software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *--------------------------------------------------------------------------*/

#ifndef XDAS_WIRE_H_INCLUDED
#define XDAS_WIRE_H_INCLUDED

#include "xdas_base.h"

#include <stddef.h>

#define AS_UINT16(p)\
   (uint16_t)((((uint8_t *)(p))[0] <<  8) |\
              (((uint8_t *)(p))[1]      ))

#define AS_UINT24(p)\
   (uint32_t)((((uint8_t *)(p))[0] << 16) |\
              (((uint8_t *)(p))[1] <<  8) |\
              (((uint8_t *)(p))[2]      ))

#define AS_UINT32(p)\
   (uint32_t)((((uint8_t *)(p))[0] << 24) |\
              (((uint8_t *)(p))[1] << 16) |\
              (((uint8_t *)(p))[2] <<  8) |\
              (((uint8_t *)(p))[3]      ))

#define TO_UINT16(p,v)\
   ((((uint8_t *)(p))[0]=(uint8_t)(((v) >>  8) & 0xff)),\
    (((uint8_t *)(p))[1]=(uint8_t)(((v)      ) & 0xff)))

#define TO_UINT24(p,v)\
   ((((uint8_t *)(p))[0]=(uint8_t)(((v) >> 16) & 0xff)),\
    (((uint8_t *)(p))[1]=(uint8_t)(((v) >>  8) & 0xff)),\
    (((uint8_t *)(p))[2]=(uint8_t)(((v)      ) & 0xff)))

#define TO_UINT32(p,v)\
   ((((uint8_t *)(p))[0]=(uint8_t)(((v) >> 24) & 0xff)),\
    (((uint8_t *)(p))[1]=(uint8_t)(((v) >> 16) & 0xff)),\
    (((uint8_t *)(p))[2]=(uint8_t)(((v) >>  8) & 0xff)),\
    (((uint8_t *)(p))[3]=(uint8_t)(((v)      ) & 0xff)))

/* @} */

uint16_t xdas_get_uint16(char ** cpp);
uint32_t xdas_get_uint24(char ** cpp);
uint32_t xdas_get_uint32(char ** cpp);

void xdas_put_uint16(char ** cpp, size_t val);
void xdas_put_uint24(char ** cpp, size_t val);
void xdas_put_uint32(char ** cpp, size_t val);

#endif /* XDAS_WIRE_H_INCLUDED */