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author | Eric Laurent <elaurent@google.com> | 2010-07-09 12:28:50 -0700 |
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committer | Eric Laurent <elaurent@google.com> | 2010-07-17 06:33:00 -0700 |
commit | 2c8e5cab3faa6d360e222b7a6c40a80083d021ac (patch) | |
tree | fd19b8baa829edb78116b089d1122ea4ef0921e1 /media/libeffects/lvm/lib/Common/src/Shift_Sat_v16xv16.c | |
parent | ada2ac8e09b6d3f2b3c3155a852ba0fffae1b592 (diff) | |
download | frameworks_av-2c8e5cab3faa6d360e222b7a6c40a80083d021ac.zip frameworks_av-2c8e5cab3faa6d360e222b7a6c40a80083d021ac.tar.gz frameworks_av-2c8e5cab3faa6d360e222b7a6c40a80083d021ac.tar.bz2 |
First submission of audio effect library from NXP software.
This CL contains the first open sourceable version of the audio effect library from NXP software.
The effects implemented are:
- Bass boost
- Virtualizer (stereo widening)
- Equalizer
- Spectrum analyzer
Source file for the effect engines are located under libeffects/lvm/lib
The wrapper implementing the interface with the audio effect framework in under libeffects/lvm/wrapper
The code of other effect libraries has also been reorganized fo clarity:
- the effect factory is now under libeffects/factory
- the test equalizer and reverb effects are under libeffect/testlibs
- the visualizer is under libeffects/virtualizer
Change-Id: I8d91e2181f81b89f8fc0c1e1e6bf552c5809b2eb
Diffstat (limited to 'media/libeffects/lvm/lib/Common/src/Shift_Sat_v16xv16.c')
-rwxr-xr-x | media/libeffects/lvm/lib/Common/src/Shift_Sat_v16xv16.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/Common/src/Shift_Sat_v16xv16.c b/media/libeffects/lvm/lib/Common/src/Shift_Sat_v16xv16.c new file mode 100755 index 0000000..e449a7f --- /dev/null +++ b/media/libeffects/lvm/lib/Common/src/Shift_Sat_v16xv16.c @@ -0,0 +1,89 @@ +/* + * 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. + */ + +/********************************************************************************** + + $Author: beq07716 $ + $Revision: 1000 $ + $Date: 2010-06-28 13:08:20 +0200 (Mon, 28 Jun 2010) $ + +***********************************************************************************/ + +/********************************************************************************** + INCLUDE FILES +***********************************************************************************/ + +#include "VectorArithmetic.h" + +/********************************************************************************** + FUNCTION Shift_Sat_v16xv16 +***********************************************************************************/ + +void Shift_Sat_v16xv16 (const LVM_INT16 val, + const LVM_INT16 *src, + LVM_INT16 *dst, + LVM_INT16 n) +{ + LVM_INT32 temp; + LVM_INT32 ii; + LVM_INT16 RShift; + if(val>0) + { + for (ii = n; ii != 0; ii--) + { + temp = (LVM_INT32)*src; + src++; + + temp = temp << val; + + if (temp > 0x00007FFF) + { + *dst = 0x7FFF; + } + else if (temp < -0x00008000) + { + *dst = - 0x8000; + } + else + { + *dst = (LVM_INT16)temp; + } + dst++; + } + } + else if(val<0) + { + RShift=(LVM_INT16)(-val); + + for (ii = n; ii != 0; ii--) + { + *dst = (LVM_INT16)(*src >> RShift); + dst++; + src++; + } + } + else + { + if(src!=dst) + { + Copy_16(src,dst,n); + } + } + return; +} + +/**********************************************************************************/ |