/*
 * LIBOIL - Library of Optimized Inner Loops
 * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */
//Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <liboil/liboilfunction.h>
#include "liboil/dct/dct.h"
#include <math.h>


/**
 * oil_imdct32_f32:
 * @d_32:
 * @s_32:
 *
 * Performs a Inverse Modified Discrete Cosine Transform (IMDCT)
 * on the source array @s_32 and places the result in @d_32.
 */
OIL_DEFINE_CLASS (imdct32_f32, "float *d_32, float *s_32");

static void imdct32_f32_ref (float *dest, const float *src)
{
	double x;
	int i,j;
	double coeff;

	for(i=0;i<32;i++){
		x = 0;
		for(j=0;j<32;j++){
			coeff = cos((M_PI/32)*i*(j+0.5));
			x += coeff * src[j];
		}
		dest[i] = x;
	}
}

OIL_DEFINE_IMPL_REF (imdct32_f32_ref, imdct32_f32);



#ifdef	__SYMBIAN32__
 
OilFunctionClass* __oil_function_class_imdct32_f32() {
		return &_oil_function_class_imdct32_f32;
}
#endif



#ifdef	__SYMBIAN32__
 
OilFunctionImpl* __oil_function_impl_imdct32_f32_ref() {
		return &_oil_function_impl_imdct32_f32_ref;
}
#endif



#ifdef	__SYMBIAN32__
 
EXPORT_C void** _oil_function_class_ptr_imdct32_f32 ()	{
	oil_function_class_ptr_imdct32_f32 = __oil_function_class_imdct32_f32();
	return &oil_function_class_ptr_imdct32_f32->func;
	}
#endif

