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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/lib/ScalarArithmetic.h | |
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/lib/ScalarArithmetic.h')
-rwxr-xr-x | media/libeffects/lvm/lib/Common/lib/ScalarArithmetic.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/Common/lib/ScalarArithmetic.h b/media/libeffects/lvm/lib/Common/lib/ScalarArithmetic.h new file mode 100755 index 0000000..c66e201 --- /dev/null +++ b/media/libeffects/lvm/lib/Common/lib/ScalarArithmetic.h @@ -0,0 +1,68 @@ +/* + * 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) $*/ +/* */ +/************************************************************************/ + +#ifndef __SCALARARITHMETIC_H__ +#define __SCALARARITHMETIC_H__ + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + + +/*######################################################################################*/ +/* Include files */ +/*######################################################################################*/ + +#include "LVM_Types.h" + +/*######################################################################################*/ +/* Extern function prototypes */ +/*######################################################################################*/ + +/* Absolute value including the corner case for the extreme negative value */ +LVM_INT32 Abs_32(LVM_INT32 input); + +/**************************************************************************************** + * Name : dB_to_Lin32() + * Input : Signed 16-bit integer + * MSB (16) = sign bit + * (15->05) = integer part + * (04->01) = decimal part + * Output : Signed 32-bit integer + * MSB (32) = sign bit + * (31->16) = integer part + * (15->01) = decimal part + * Returns : Lin value format 1.16.15 + ****************************************************************************************/ + +LVM_INT32 dB_to_Lin32(LVM_INT16 db_fix); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* __SCALARARITHMETIC_H__ */ + + |