diff -r 000000000000 -r bde4ae8d615e os/ossrv/genericopenlibs/liboil/src/simdpack/clip_fast.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/os/ossrv/genericopenlibs/liboil/src/simdpack/clip_fast.c Fri Jun 15 03:10:57 2012 +0200 @@ -0,0 +1,136 @@ +/* + * LIBOIL - Library of Optimized Inner Loops + * Copyright (c) 2003,2004 David A. Schleef + * 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 +#include "liboil/simdpack/simdpack.h" + +/* This is a suprisingly fast implementation of clipping + * in straight C. It would be difficult to do it faster in asm + * without specialized opcodes. */ + +static void +clip_s16_fast (int16_t *dest, int dstr, int16_t *src, int sstr, int n, + int16_t *low, int16_t *hi) +{ + int i; + int32_t x; + + for(i=0;i>31)&(x-*low)) + (((*hi-x)>>31)&(*hi-x)); + OIL_GET(dest,i*dstr, int16_t) = x; + } +} + +OIL_DEFINE_IMPL (clip_s16_fast, clip_s16); + +static void +clip_s16_fast2 (int16_t *dest, int dstr, int16_t *src, int sstr, int n, + int16_t *low, int16_t *hi) +{ + int32_t x1, x2; + + if (n&1) { + x1 = *src; + OIL_INCREMENT(src,sstr); + x1 -= (((x1-*low)>>31)&(x1-*low)); + *dest = x1 + (((*hi-x1)>>31)&(*hi-x1)); + OIL_INCREMENT(dest,dstr); + n--; + } + while(n>0){ + x1 = *src; + OIL_INCREMENT(src,sstr); + x2 = *src; + OIL_INCREMENT(src,sstr); + x1 -= (((x1-*low)>>31)&(x1-*low)); + x2 -= (((x2-*low)>>31)&(x2-*low)); + *dest = x1 + (((*hi-x1)>>31)&(*hi-x1)); + OIL_INCREMENT(dest,dstr); + *dest = x2 + (((*hi-x2)>>31)&(*hi-x2)); + OIL_INCREMENT(dest,dstr); + n-=2; + } +} +OIL_DEFINE_IMPL (clip_s16_fast2, clip_s16); + + + + +#if 0 +/* broken */ + +/* This trick clips + * the range min^(1<<31) to max^(1<<31) incorrectly with int32_t. + * Thus the use of int64_t. */ + +static void +clip_s32_fast (int32_t *dest, int dstr, int32_t *src, int sstr, int n, + int32_t *low, int32_t *hi) +{ + int i; + int64_t x; + + for(i=0;i>63)&(x-*low)) + (((*hi-x)>>63)&(*hi-x)); + OIL_GET(dest,i*dstr,int32_t) = x; + } +} + +OIL_DEFINE_IMPL (clip_s32_fast, clip_s32); +#endif + + + + +#ifdef __SYMBIAN32__ + +OilFunctionImpl* __oil_function_impl_clip_s16_fast() { + return &_oil_function_impl_clip_s16_fast; +} +#endif + +#ifdef __SYMBIAN32__ + +OilFunctionImpl* __oil_function_impl_clip_s16_fast2() { + return &_oil_function_impl_clip_s16_fast2; +} +#endif +#if 0 +#ifdef __SYMBIAN32__ + +OilFunctionImpl* __oil_function_impl_clip_s32_fast() { + return &_oil_function_impl_clip_s32_fast; +} +#endif +#endif