diff options
Diffstat (limited to 'media/libeffects/lvm/lib/Common/src/Shift_Sat_v32xv32.c')
-rwxr-xr-x | media/libeffects/lvm/lib/Common/src/Shift_Sat_v32xv32.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/Common/src/Shift_Sat_v32xv32.c b/media/libeffects/lvm/lib/Common/src/Shift_Sat_v32xv32.c new file mode 100755 index 0000000..0ab98ea --- /dev/null +++ b/media/libeffects/lvm/lib/Common/src/Shift_Sat_v32xv32.c @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2004-2010 NXP Software + * Copyright (C) 2010 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/************************************************************************/ +/* */ +/* Project:: */ +/* $Author: beq07716 $*/ +/* $Revision: 1000 $*/ +/* $Date: 2010-06-28 13:08:20 +0200 (Mon, 28 Jun 2010) $*/ +/* */ +/************************************************************************/ + +/********************************************************************************** + INCLUDE FILES +***********************************************************************************/ + +#include "VectorArithmetic.h" + +/********************************************************************************** + FUNCTION Shift_Sat_v32xv32 +***********************************************************************************/ + +void Shift_Sat_v32xv32 (const LVM_INT16 val, + const LVM_INT32 *src, + LVM_INT32 *dst, + LVM_INT16 n) +{ + LVM_INT32 ii; + LVM_INT16 RShift; + + if(val>0) + { + LVM_INT32 a,b; + + for (ii = n; ii != 0; ii--) + { + a=*src; + src++; + + b=(a<<val); + + if( (b>>val) != a ) /* if overflow occured, right shift will show difference*/ + { + if(a<0) + { + b=0x80000000l; + } + else + { + b=0x7FFFFFFFl; + } + } + + *dst = b; + dst++; + } + } + else if(val<0) + { + RShift=(LVM_INT16)(-val); + for (ii = n; ii != 0; ii--) + { + *dst = (*src >> RShift); + dst++; + src++; + } + } + else + { + if(src!=dst) + { + Copy_16((LVM_INT16 *)src,(LVM_INT16 *)dst,(LVM_INT16)(n<<1)); + } + } + return; +} + +/**********************************************************************************/ |