--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/liboil/src/dct/idct8_f64.c Fri Apr 16 16:46:38 2010 +0300
@@ -0,0 +1,165 @@
+/*
+ * 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_idct8_f64:
+ * @d_8:
+ * @dstr:
+ * @s_8:
+ * @sstr:
+ *
+ * Performs a Inverse Discrete Cosine Transform on @s_8 and places
+ * the result in @d_8.
+ */
+OIL_DEFINE_CLASS (idct8_f64, "double *d_8, int dstr, double *s_8, int sstr");
+
+#define C0_9808 0.980785280
+#define C0_9239 0.923879532
+#define C0_8315 0.831469612
+#define C0_7071 0.707106781
+#define C0_5556 0.555570233
+#define C0_3827 0.382683432
+#define C0_1951 0.195090322
+
+static void idct8_f64_ref(double *dest, int dstr, const double *src, int sstr)
+{
+ static double idct_coeff[8][8];
+ static int idct_coeff_init = 0;
+ int i,j;
+ double x;
+
+ if(!idct_coeff_init){
+ double scale;
+
+ for(i=0;i<8;i++){
+ scale = (i==0) ? sqrt(0.125) : 0.5;
+ for(j=0;j<8;j++){
+ idct_coeff[j][i] = scale *
+ cos((M_PI/8)*i*(j+0.5));
+ }
+ }
+ idct_coeff_init = 1;
+ }
+
+ for(i=0;i<8;i++){
+ x = 0;
+ for(j=0;j<8;j++){
+ x += idct_coeff[i][j] * OIL_GET (src, sstr*j, double);
+ }
+ OIL_GET (dest, dstr*i, double) = x;
+ }
+}
+
+OIL_DEFINE_IMPL_REF (idct8_f64_ref, idct8_f64);
+
+
+static void idct8_f64_fastx(double *dest, int dstr, const double *src, int sstr)
+{
+ double s07, s16, s25, s34;
+ double d07, d16, d25, d34;
+ double ss07s34, ss16s25;
+ double ds07s34, ds16s25;
+
+ ss07s34 = C0_7071*(OIL_GET(src,sstr*0, double) + OIL_GET(src,sstr*4, double));
+ ss16s25 = C0_7071*(OIL_GET(src,sstr*0, double) - OIL_GET(src,sstr*4, double));
+
+ ds07s34 = C0_9239* OIL_GET(src,sstr*2, double) + C0_3827* OIL_GET(src,sstr*6, double);
+ ds16s25 = C0_3827* OIL_GET(src,sstr*2, double) - C0_9239* OIL_GET(src,sstr*6, double);
+
+ s07 = ss07s34 + ds07s34;
+ s34 = ss07s34 - ds07s34;
+
+ s16 = ss16s25 + ds16s25;
+ s25 = ss16s25 - ds16s25;
+
+ d07 = C0_9808* OIL_GET(src,sstr*1, double) + C0_8315* OIL_GET(src,sstr*3, double)
+ + C0_5556* OIL_GET(src,sstr*5, double) + C0_1951* OIL_GET(src,sstr*7, double);
+ d16 = C0_8315* OIL_GET(src,sstr*1, double) - C0_1951* OIL_GET(src,sstr*3, double)
+ - C0_9808* OIL_GET(src,sstr*5, double) - C0_5556* OIL_GET(src,sstr*7, double);
+ d25 = C0_5556* OIL_GET(src,sstr*1, double) - C0_9808* OIL_GET(src,sstr*3, double)
+ + C0_1951* OIL_GET(src,sstr*5, double) + C0_8315* OIL_GET(src,sstr*7, double);
+ d34 = C0_1951* OIL_GET(src,sstr*1, double) - C0_5556* OIL_GET(src,sstr*3, double)
+ + C0_8315* OIL_GET(src,sstr*5, double) - C0_9808* OIL_GET(src,sstr*7, double);
+
+ OIL_GET(dest,dstr*0, double) = 0.5 * (s07 + d07);
+ OIL_GET(dest,dstr*1, double) = 0.5 * (s16 + d16);
+ OIL_GET(dest,dstr*2, double) = 0.5 * (s25 + d25);
+ OIL_GET(dest,dstr*3, double) = 0.5 * (s34 + d34);
+ OIL_GET(dest,dstr*4, double) = 0.5 * (s34 - d34);
+ OIL_GET(dest,dstr*5, double) = 0.5 * (s25 - d25);
+ OIL_GET(dest,dstr*6, double) = 0.5 * (s16 - d16);
+ OIL_GET(dest,dstr*7, double) = 0.5 * (s07 - d07);
+
+}
+
+OIL_DEFINE_IMPL (idct8_f64_fastx, idct8_f64);
+
+
+
+
+#ifdef __SYMBIAN32__
+
+OilFunctionClass* __oil_function_class_idct8_f64() {
+ return &_oil_function_class_idct8_f64;
+}
+#endif
+
+
+
+#ifdef __SYMBIAN32__
+
+OilFunctionImpl* __oil_function_impl_idct8_f64_ref() {
+ return &_oil_function_impl_idct8_f64_ref;
+}
+#endif
+
+#ifdef __SYMBIAN32__
+
+OilFunctionImpl* __oil_function_impl_idct8_f64_fastx() {
+ return &_oil_function_impl_idct8_f64_fastx;
+}
+#endif
+
+
+
+#ifdef __SYMBIAN32__
+
+EXPORT_C void** _oil_function_class_ptr_idct8_f64 () {
+ oil_function_class_ptr_idct8_f64 = __oil_function_class_idct8_f64();
+ return &oil_function_class_ptr_idct8_f64->func;
+ }
+#endif
+