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67 lines
2.1 KiB
67 lines
2.1 KiB
/*----------------------------------------------------------------------------
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*
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* File:
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* eas_wtsynth.h
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*
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* Contents and purpose:
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* This file defines the interface for synthesizer engine
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*
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* Copyright Sonic Network Inc. 2004
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*----------------------------------------------------------------------------
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* Revision Control:
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* $Revision: 82 $
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* $Date: 2006-07-10 11:45:19 -0700 (Mon, 10 Jul 2006) $
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*----------------------------------------------------------------------------
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*/
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#ifndef _EAS_WTSYNTH_H
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#define _EAS_WTSYNTH_H
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#include "eas_sndlib.h"
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#include "eas_wtengine.h"
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/* adjust the filter cutoff frequency to the sample rate */
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#if defined (_SAMPLE_RATE_8000)
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#define FILTER_CUTOFF_FREQ_ADJUST 0
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#elif defined (_SAMPLE_RATE_16000)
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#define FILTER_CUTOFF_FREQ_ADJUST 1200
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#elif defined (_SAMPLE_RATE_20000)
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#define FILTER_CUTOFF_FREQ_ADJUST 1586
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#elif defined (_SAMPLE_RATE_22050)
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#define FILTER_CUTOFF_FREQ_ADJUST 1756
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#elif defined (_SAMPLE_RATE_24000)
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#define FILTER_CUTOFF_FREQ_ADJUST 1902
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#elif defined (_SAMPLE_RATE_32000)
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#define FILTER_CUTOFF_FREQ_ADJUST 2400
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#elif defined (_SAMPLE_RATE_44100)
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#define FILTER_CUTOFF_FREQ_ADJUST 2956
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#elif defined (_SAMPLE_RATE_48000)
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#define FILTER_CUTOFF_FREQ_ADJUST 3102
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#else
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#error "_SAMPLE_RATE_XXXXX must be defined to valid rate"
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#endif
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/* function prototypes */
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void WT_UpdateLFO (S_LFO_CONTROL *pLFO, EAS_I16 phaseInc);
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#if defined(_FILTER_ENABLED) || defined(DLS_SYNTHESIZER)
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void WT_SetFilterCoeffs (S_WT_INT_FRAME *pIntFrame, EAS_I32 cutoff, EAS_I32 resonance);
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#endif
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#endif
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