| /*---------------------------------------------------------------------------- | |
| * | |
| * File: | |
| * eas_wtsynth.h | |
| * | |
| * Contents and purpose: | |
| * This file defines the interface for synthesizer engine | |
| * | |
| * Copyright Sonic Network Inc. 2004 | |
| * 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. | |
| * | |
| *---------------------------------------------------------------------------- | |
| * Revision Control: | |
| * $Revision: 82 $ | |
| * $Date: 2006-07-10 11:45:19 -0700 (Mon, 10 Jul 2006) $ | |
| *---------------------------------------------------------------------------- | |
| */ | |
| #ifndef _EAS_WTSYNTH_H | |
| #define _EAS_WTSYNTH_H | |
| #include "eas_sndlib.h" | |
| #include "eas_wtengine.h" | |
| /* adjust the filter cutoff frequency to the sample rate */ | |
| #if defined (_SAMPLE_RATE_8000) | |
| #define FILTER_CUTOFF_FREQ_ADJUST 0 | |
| #elif defined (_SAMPLE_RATE_16000) | |
| #define FILTER_CUTOFF_FREQ_ADJUST 1200 | |
| #elif defined (_SAMPLE_RATE_20000) | |
| #define FILTER_CUTOFF_FREQ_ADJUST 1586 | |
| #elif defined (_SAMPLE_RATE_22050) | |
| #define FILTER_CUTOFF_FREQ_ADJUST 1756 | |
| #elif defined (_SAMPLE_RATE_24000) | |
| #define FILTER_CUTOFF_FREQ_ADJUST 1902 | |
| #elif defined (_SAMPLE_RATE_32000) | |
| #define FILTER_CUTOFF_FREQ_ADJUST 2400 | |
| #elif defined (_SAMPLE_RATE_44100) | |
| #define FILTER_CUTOFF_FREQ_ADJUST 2956 | |
| #elif defined (_SAMPLE_RATE_48000) | |
| #define FILTER_CUTOFF_FREQ_ADJUST 3102 | |
| #else | |
| #error "_SAMPLE_RATE_XXXXX must be defined to valid rate" | |
| #endif | |
| /* function prototypes */ | |
| void WT_UpdateLFO (S_LFO_CONTROL *pLFO, EAS_I16 phaseInc); | |
| #if defined(_FILTER_ENABLED) || defined(DLS_SYNTHESIZER) | |
| void WT_SetFilterCoeffs (S_WT_INT_FRAME *pIntFrame, EAS_I32 cutoff, EAS_I32 resonance); | |
| #endif | |
| #endif | |