buffers.c

/***
 * This file is part of OpenHome, an open source home automation system.
 * Copyright (C) 2003 Jan Klötzke
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <inttypes.h>
#include "net/buffers.h"

void buf_prep_char(net_buf_t *obj, uint8_t value)
{
        obj->len++;
        *--obj->data = value;
}

void buf_prep_int(net_buf_t *obj, uint16_t value)
{
        obj->len+=2;
        obj->data-=2;
        *((uint16_t*)obj->data) = value;
}

void buf_prep_long(net_buf_t *obj, uint32_t value)
{
        obj->len+=4;
        obj->data-=4;
        *((uint32_t*)obj->data) = value;
}

void buf_app_int(net_buf_t *obj, uint16_t value)
{
        *((uint16_t*)(obj->data+obj->len)) = value;
        obj->len += 2;
}

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