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/*
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* LIBOIL - Library of Optimized Inner Loops
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* Copyright (c) 2001,2003,2004 David A. Schleef <ds@schleef.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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//Portions Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <liboil/liboilfunction.h>
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#include "conv.h"
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#include <math.h>
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static void
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conv_f64_s16_table(double *dest, int dest_stride, const short *src,
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int src_stride, int n)
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{
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static double ints_high[256];
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static double ints_low[256];
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static int init = 0;
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int i;
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unsigned int idx;
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if(!init){
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for(i=0;i<256;i++){
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ints_high[i]=256.0*((i<128)?i:i-256);
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ints_low[i]=i;
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}
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init = 1;
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}
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if(n&1){
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idx = (unsigned short)*src;
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*dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
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OIL_INCREMENT(dest, dest_stride);
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OIL_INCREMENT(src, src_stride);
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n-=1;
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}
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for(i=0;i<n;i+=2){
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idx = (unsigned short)*src;
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*dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
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OIL_INCREMENT(dest, dest_stride);
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OIL_INCREMENT(src, src_stride);
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idx = (unsigned short)*src;
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*dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
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OIL_INCREMENT(dest, dest_stride);
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OIL_INCREMENT(src, src_stride);
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}
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}
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OIL_DEFINE_IMPL(conv_f64_s16_table, conv_f64_s16);
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static void
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conv_f32_s16_table(float *dest, int dest_stride, const short *src,
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int src_stride, int n)
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{
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static float ints_high[256];
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static float ints_low[256];
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static int init = 0;
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int i;
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unsigned int idx;
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if(!init){
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for(i=0;i<256;i++){
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ints_high[i]=256.0*((i<128)?i:i-256);
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ints_low[i]=i;
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}
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init = 1;
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}
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if(n&1){
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idx = (unsigned short)*src;
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*dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
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OIL_INCREMENT(dest, dest_stride);
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OIL_INCREMENT(src, src_stride);
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n-=1;
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}
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for(i=0;i<n;i+=2){
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idx = (unsigned short)*src;
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*dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
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OIL_INCREMENT(dest, dest_stride);
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OIL_INCREMENT(src, src_stride);
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idx = (unsigned short)*src;
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*dest = ints_high[(idx>>8)] + ints_low[(idx&0xff)];
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OIL_INCREMENT(dest, dest_stride);
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OIL_INCREMENT(src, src_stride);
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}
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}
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OIL_DEFINE_IMPL(conv_f32_s16_table, conv_f32_s16);
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#ifdef __SYMBIAN32__
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OilFunctionImpl* __oil_function_impl_conv_f64_s16_table() {
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return &_oil_function_impl_conv_f64_s16_table;
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}
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#endif
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#ifdef __SYMBIAN32__
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OilFunctionImpl* __oil_function_impl_conv_f32_s16_table() {
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return &_oil_function_impl_conv_f32_s16_table;
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}
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#endif
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