/*
 * $Id$
 *
 * ***** BEGIN LGPL LICENSE BLOCK *****
 *
 * Copyright 2009 Jörg Hermann Müller
 *
 * This file is part of SoundSpace.
 *
 * SoundSpace is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * SoundSpace 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with SoundSpace.  If not, see <http://www.gnu.org/licenses/>.
 *
 * ***** END LGPL LICENSE BLOCK *****
 */

#include "SND_Buffer.h"
#include "SND_Space.h"

#include <cstring>
#include <malloc.h>

#define SND_ALIGN(a) (a + 16 - ((long)a & 15))

SND_Buffer::SND_Buffer(int size)
{
	m_size = size;
	m_buffer = (unsigned char*) malloc(size+15);
}

SND_Buffer::~SND_Buffer()
{
	free(m_buffer);
}

unsigned char* SND_Buffer::getBuffer()
{
	return SND_ALIGN(m_buffer);
}

int SND_Buffer::getSize()
{
	return m_size;
}

void SND_Buffer::resize(int size, bool keep)
{
	unsigned char* buffer = (unsigned char*) malloc(size+15);

	// copy old data over if wanted
	if(keep)
		memcpy(SND_ALIGN(buffer), SND_ALIGN(m_buffer), SND_MIN(size, m_size));

	free(m_buffer);

	m_buffer = buffer;
	m_size = size;
}