1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/genericopenlibs/liboil/src/conv/conv_misc.c Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,129 @@
1.4 +/*
1.5 + * LIBOIL - Library of Optimized Inner Loops
1.6 + * Copyright (c) 2001,2003,2004 David A. Schleef <ds@schleef.org>
1.7 + * All rights reserved.
1.8 + *
1.9 + * Redistribution and use in source and binary forms, with or without
1.10 + * modification, are permitted provided that the following conditions
1.11 + * are met:
1.12 + * 1. Redistributions of source code must retain the above copyright
1.13 + * notice, this list of conditions and the following disclaimer.
1.14 + * 2. Redistributions in binary form must reproduce the above copyright
1.15 + * notice, this list of conditions and the following disclaimer in the
1.16 + * documentation and/or other materials provided with the distribution.
1.17 + *
1.18 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1.19 + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1.20 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.21 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
1.22 + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1.23 + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1.24 + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.25 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1.26 + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1.27 + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.28 + * POSSIBILITY OF SUCH DAMAGE.
1.29 + */
1.30 +//Portions Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
1.31 +
1.32 +#ifdef HAVE_CONFIG_H
1.33 +#include "config.h"
1.34 +#endif
1.35 +#include <liboil/liboilfunction.h>
1.36 +#include "conv.h"
1.37 +
1.38 +#include <math.h>
1.39 +
1.40 +
1.41 +static void
1.42 +conv_f64_s16_table(double *dest, int dest_stride, const short *src,
1.43 + int src_stride, int n)
1.44 +{
1.45 + static double ints_high[256];
1.46 + static double ints_low[256];
1.47 + static int init = 0;
1.48 + int i;
1.49 + unsigned int idx;
1.50 + if(!init){
1.51 + for(i=0;i<256;i++){
1.52 + ints_high[i]=256.0*((i<128)?i:i-256);
1.53 + ints_low[i]=i;
1.54 + }
1.55 + init = 1;
1.56 + }
1.57 +
1.58 + if(n&1){
1.59 + idx = (unsigned short)*src;
1.60 + *dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
1.61 + OIL_INCREMENT(dest, dest_stride);
1.62 + OIL_INCREMENT(src, src_stride);
1.63 + n-=1;
1.64 + }
1.65 + for(i=0;i<n;i+=2){
1.66 + idx = (unsigned short)*src;
1.67 + *dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
1.68 + OIL_INCREMENT(dest, dest_stride);
1.69 + OIL_INCREMENT(src, src_stride);
1.70 + idx = (unsigned short)*src;
1.71 + *dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
1.72 + OIL_INCREMENT(dest, dest_stride);
1.73 + OIL_INCREMENT(src, src_stride);
1.74 + }
1.75 +}
1.76 +OIL_DEFINE_IMPL(conv_f64_s16_table, conv_f64_s16);
1.77 +
1.78 +static void
1.79 +conv_f32_s16_table(float *dest, int dest_stride, const short *src,
1.80 + int src_stride, int n)
1.81 +{
1.82 + static float ints_high[256];
1.83 + static float ints_low[256];
1.84 + static int init = 0;
1.85 + int i;
1.86 + unsigned int idx;
1.87 + if(!init){
1.88 + for(i=0;i<256;i++){
1.89 + ints_high[i]=256.0*((i<128)?i:i-256);
1.90 + ints_low[i]=i;
1.91 + }
1.92 + init = 1;
1.93 + }
1.94 +
1.95 + if(n&1){
1.96 + idx = (unsigned short)*src;
1.97 + *dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
1.98 + OIL_INCREMENT(dest, dest_stride);
1.99 + OIL_INCREMENT(src, src_stride);
1.100 + n-=1;
1.101 + }
1.102 + for(i=0;i<n;i+=2){
1.103 + idx = (unsigned short)*src;
1.104 + *dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
1.105 + OIL_INCREMENT(dest, dest_stride);
1.106 + OIL_INCREMENT(src, src_stride);
1.107 + idx = (unsigned short)*src;
1.108 + *dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
1.109 + OIL_INCREMENT(dest, dest_stride);
1.110 + OIL_INCREMENT(src, src_stride);
1.111 + }
1.112 +}
1.113 +OIL_DEFINE_IMPL(conv_f32_s16_table, conv_f32_s16);
1.114 +
1.115 +
1.116 +
1.117 +
1.118 +
1.119 +#ifdef __SYMBIAN32__
1.120 +
1.121 +OilFunctionImpl* __oil_function_impl_conv_f64_s16_table() {
1.122 + return &_oil_function_impl_conv_f64_s16_table;
1.123 +}
1.124 +#endif
1.125 +
1.126 +#ifdef __SYMBIAN32__
1.127 +
1.128 +OilFunctionImpl* __oil_function_impl_conv_f32_s16_table() {
1.129 + return &_oil_function_impl_conv_f32_s16_table;
1.130 +}
1.131 +#endif
1.132 +