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59 lines
1.8 KiB
59 lines
1.8 KiB
/* ***** BEGIN LICENSE BLOCK *****
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*
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* This software is released under the provisions of the GPL version 2.
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* see file "COPYING". If that file is not available, the full statement
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* of the license can be found at
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*
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* http://www.fsf.org/licensing/licenses/gpl.txt
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*
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* Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
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* Copyright (c) 2005 Paul Cifarelli All Rights Reserved.
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*
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*
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* This file is part of the Helix DNA Technology. RealNetworks is the
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* developer of the Original Code and owns the copyrights in the
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* portions it created.
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*
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* This file, and the files included with this file, is distributed
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* and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
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* KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
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* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
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* ENJOYMENT OR NON-INFRINGEMENT.
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*
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* Technology Compatibility Kit Test Suite(s) Location:
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* http://www.helixcommunity.org/content/tck
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _GAIN_H_
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#define _GAIN_H_
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#include "hxtypes.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define GAIN_MAX_dB 0.0
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#define GAIN_MIN_dB -27.0
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struct GAIN_STATE;
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typedef struct GAIN_STATE GAIN_STATE;
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GAIN_STATE* gainInit(int sampleRate, int nChannels, int bytePerSample) ;
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void gainFree(GAIN_STATE*) ;
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float gainSetImmediatedB(float dB, GAIN_STATE*) ;
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float gainSetSmoothdB(float dB, GAIN_STATE*);
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float gainSetImmediate(float dB, GAIN_STATE*) ;
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float gainSetSmooth(float dB, GAIN_STATE*);
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void gainSetMute(GAIN_STATE* g);
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int gainSetTimeConstant(float millis, GAIN_STATE*) ;
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void gainFeed(unsigned char* signal, unsigned char *outsignal, int len, GAIN_STATE* g) ;
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#ifdef __cplusplus
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}
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#endif
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#endif /* _GAIN_H_ */
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