genericopenlibs/liboil/src/dct/imdct32_f32.c
changeset 18 47c74d1534e1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/liboil/src/dct/imdct32_f32.c	Fri Apr 16 16:46:38 2010 +0300
@@ -0,0 +1,93 @@
+/*
+ * 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
+