diff options
Diffstat (limited to 'media/libeffects/lvm/lib/Common/src/Mac3s_Sat_32x16.c')
-rwxr-xr-x | media/libeffects/lvm/lib/Common/src/Mac3s_Sat_32x16.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/Common/src/Mac3s_Sat_32x16.c b/media/libeffects/lvm/lib/Common/src/Mac3s_Sat_32x16.c new file mode 100755 index 0000000..746a273 --- /dev/null +++ b/media/libeffects/lvm/lib/Common/src/Mac3s_Sat_32x16.c @@ -0,0 +1,80 @@ +/* + * 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" +#include "LVM_Macros.h" + +/********************************************************************************** + FUNCTION MAC3S_16X16 +***********************************************************************************/ + +void Mac3s_Sat_32x16( const LVM_INT32 *src, + const LVM_INT16 val, + LVM_INT32 *dst, + LVM_INT16 n) +{ + LVM_INT16 ii; + LVM_INT32 srcval,temp, dInVal, dOutVal; + + + for (ii = n; ii != 0; ii--) + { + srcval=*src; + src++; + + MUL32x16INTO32(srcval,val,temp,15) + + dInVal = *dst; + dOutVal = temp + dInVal; + + + if ((((dOutVal ^ temp) & (dOutVal ^ dInVal)) >> 31)!=0) /* overflow / underflow */ + { + if(temp<0) + { + dOutVal=0x80000000l; + } + else + { + dOutVal=0x7FFFFFFFl; + } + } + + *dst = dOutVal; + dst++; + } + + return; +} + +/**********************************************************************************/ + + + |