sl@0: /*
sl@0:  * LIBOIL - Library of Optimized Inner Loops
sl@0:  * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
sl@0:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
sl@0:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
sl@0:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
sl@0:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
sl@0:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
sl@0:  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
sl@0:  * POSSIBILITY OF SUCH DAMAGE.
sl@0:  */
sl@0: //Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 
sl@0: 
sl@0: #ifdef HAVE_CONFIG_H
sl@0: #include "config.h"
sl@0: #endif
sl@0: 
sl@0: #include <liboil/liboilfunction.h>
sl@0: #include "liboil/dct/dct.h"
sl@0: #include <math.h>
sl@0: 
sl@0: 
sl@0: /**
sl@0:  * oil_mdct12_f64:
sl@0:  * @d_6:
sl@0:  * @s_12:
sl@0:  *
sl@0:  * Performs a Modified Discrete Cosine Transform (MDCT)
sl@0:  * on the source array @s_12 and places the result in @d_6.
sl@0:  */
sl@0: OIL_DEFINE_CLASS (mdct12_f64, "double *d_6, double *s_12");
sl@0: /**
sl@0:  * oil_imdct12_f64:
sl@0:  * @d_12:
sl@0:  * @s_6:
sl@0:  *
sl@0:  * Performs a Inverse Modified Discrete Cosine Transform (IMDCT)
sl@0:  * on the source array @s_6 and places the result in @d_12.
sl@0:  */
sl@0: OIL_DEFINE_CLASS (imdct12_f64, "double *d_12, double *s_6");
sl@0: /**
sl@0:  * oil_mdct36_f64:
sl@0:  * @d_18:
sl@0:  * @s_36:
sl@0:  *
sl@0:  * Performs a Modified Discrete Cosine Transform (MDCT)
sl@0:  * on the source array @s_36 and places the result in @d_18.
sl@0:  */
sl@0: OIL_DEFINE_CLASS (mdct36_f64, "double *d_18, double *s_36");
sl@0: /**
sl@0:  * oil_imdct36_f64:
sl@0:  * @d_36:
sl@0:  * @s_18:
sl@0:  *
sl@0:  * Performs a Inverse Modified Discrete Cosine Transform (IMDCT)
sl@0:  * on the source array @s_18 and places the result in @d_36.
sl@0:  */
sl@0: OIL_DEFINE_CLASS (imdct36_f64, "double *d_36, double *s_18");
sl@0: 
sl@0: static void
sl@0: mdct12_f64_ref(double *dest, const double *src)
sl@0: {
sl@0:   int j, k;
sl@0:   double x;
sl@0:   int N = 6;
sl@0: 
sl@0:   for(j=0;j<N;j++){
sl@0:     x = 0;
sl@0:     for(k=0;k<2*N;k++){
sl@0:       x += src[k] * cos (M_PI/N * (j+0.5) * (k + 0.5 * (N+1)));
sl@0:     }
sl@0:     dest[j] = x;
sl@0:   }
sl@0: }
sl@0: OIL_DEFINE_IMPL_REF (mdct12_f64_ref, mdct12_f64);
sl@0: 
sl@0: 
sl@0: static void
sl@0: imdct12_f64_ref(double *dest, const double *src)
sl@0: {
sl@0:   int j,k;
sl@0:   double x;
sl@0:   int N = 6;
sl@0: 
sl@0:   for(k=0;k<2*N;k++){
sl@0:     x = 0;
sl@0:     for(j=0;j<N;j++){
sl@0:       x += src[j] * cos (M_PI/N * (j+0.5) * (k+0.5*(N + 1)));
sl@0:     }
sl@0:     dest[k] = x;
sl@0:   }
sl@0: }
sl@0: OIL_DEFINE_IMPL_REF (imdct12_f64_ref, imdct12_f64);
sl@0: 
sl@0: static void
sl@0: mdct36_f64_ref(double *dest, const double *src)
sl@0: {
sl@0:   int j, k;
sl@0:   double x;
sl@0:   int N = 18;
sl@0: 
sl@0:   for(j=0;j<N;j++){
sl@0:     x = 0;
sl@0:     for(k=0;k<2*N;k++){
sl@0:       x += src[k] * cos (M_PI/N * (j+0.5) * (k + 0.5 * (N+1)));
sl@0:     }
sl@0:     dest[j] = x;
sl@0:   }
sl@0: }
sl@0: OIL_DEFINE_IMPL_REF (mdct36_f64_ref, mdct36_f64);
sl@0: 
sl@0: 
sl@0: static void
sl@0: imdct36_f64_ref(double *dest, const double *src)
sl@0: {
sl@0:   int j,k;
sl@0:   double x;
sl@0:   int N = 18;
sl@0: 
sl@0:   for(k=0;k<2*N;k++){
sl@0:     x = 0;
sl@0:     for(j=0;j<N;j++){
sl@0:       x += src[j] * cos (M_PI/N * (j+0.5) * (k+0.5*(N + 1)));
sl@0:     }
sl@0:     dest[k] = x;
sl@0:   }
sl@0: }
sl@0: OIL_DEFINE_IMPL_REF (imdct36_f64_ref, imdct36_f64);
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionClass* __oil_function_class_mdct12_f64() {
sl@0: 		return &_oil_function_class_mdct12_f64;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionClass* __oil_function_class_imdct12_f64() {
sl@0: 		return &_oil_function_class_imdct12_f64;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionClass* __oil_function_class_mdct36_f64() {
sl@0: 		return &_oil_function_class_mdct36_f64;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionClass* __oil_function_class_imdct36_f64() {
sl@0: 		return &_oil_function_class_imdct36_f64;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_mdct12_f64_ref() {
sl@0: 		return &_oil_function_impl_mdct12_f64_ref;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_imdct12_f64_ref() {
sl@0: 		return &_oil_function_impl_imdct12_f64_ref;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_mdct36_f64_ref() {
sl@0: 		return &_oil_function_impl_mdct36_f64_ref;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_imdct36_f64_ref() {
sl@0: 		return &_oil_function_impl_imdct36_f64_ref;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: EXPORT_C void** _oil_function_class_ptr_mdct12_f64 ()	{
sl@0: 	oil_function_class_ptr_mdct12_f64 = __oil_function_class_mdct12_f64();
sl@0: 	return &oil_function_class_ptr_mdct12_f64->func;
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: EXPORT_C void** _oil_function_class_ptr_imdct12_f64 ()	{
sl@0: 	oil_function_class_ptr_imdct12_f64 = __oil_function_class_imdct12_f64();
sl@0: 	return &oil_function_class_ptr_imdct12_f64->func;
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: EXPORT_C void** _oil_function_class_ptr_mdct36_f64 ()	{
sl@0: 	oil_function_class_ptr_mdct36_f64 = __oil_function_class_mdct36_f64();
sl@0: 	return &oil_function_class_ptr_mdct36_f64->func;
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: EXPORT_C void** _oil_function_class_ptr_imdct36_f64 ()	{
sl@0: 	oil_function_class_ptr_imdct36_f64 = __oil_function_class_imdct36_f64();
sl@0: 	return &oil_function_class_ptr_imdct36_f64->func;
sl@0: 	}
sl@0: #endif
sl@0: