eas_wtsynth.h revision a8c89077d78769bf4840fa91609edc51fe2fa02d 
1/*----------------------------------------------------------------------------
2 *
3 * File:
4 * eas_wtsynth.h
5 *
6 * Contents and purpose:
7 * This file defines the interface for synthesizer engine
8 *
9 * Copyright Sonic Network Inc. 2004
10
11 * Licensed under the Apache License, Version 2.0 (the "License");
12 * you may not use this file except in compliance with the License.
13 * You may obtain a copy of the License at
14 *
15 *      http://www.apache.org/licenses/LICENSE-2.0
16 *
17 * Unless required by applicable law or agreed to in writing, software
18 * distributed under the License is distributed on an "AS IS" BASIS,
19 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 * See the License for the specific language governing permissions and
21 * limitations under the License.
22 *
23 *----------------------------------------------------------------------------
24 * Revision Control:
25 *   $Revision: 82 $
26 *   $Date: 2006-07-10 11:45:19 -0700 (Mon, 10 Jul 2006) $
27 *----------------------------------------------------------------------------
28*/
29
30#ifndef _EAS_WTSYNTH_H
31#define _EAS_WTSYNTH_H
32
33#include "eas_sndlib.h"
34#include "eas_wtengine.h"
35
36/* adjust the filter cutoff frequency to the sample rate */
37#if defined (_SAMPLE_RATE_8000)
38#define FILTER_CUTOFF_FREQ_ADJUST       0
39#elif defined (_SAMPLE_RATE_16000)
40#define FILTER_CUTOFF_FREQ_ADJUST       1200
41#elif defined (_SAMPLE_RATE_20000)
42#define FILTER_CUTOFF_FREQ_ADJUST       1586
43#elif defined (_SAMPLE_RATE_22050)
44#define FILTER_CUTOFF_FREQ_ADJUST       1756
45#elif defined (_SAMPLE_RATE_24000)
46#define FILTER_CUTOFF_FREQ_ADJUST       1902
47#elif defined (_SAMPLE_RATE_32000)
48#define FILTER_CUTOFF_FREQ_ADJUST       2400
49#elif defined (_SAMPLE_RATE_44100)
50#define FILTER_CUTOFF_FREQ_ADJUST       2956
51#elif defined (_SAMPLE_RATE_48000)
52#define FILTER_CUTOFF_FREQ_ADJUST       3102
53#else
54#error "_SAMPLE_RATE_XXXXX must be defined to valid rate"
55#endif
56
57/* function prototypes */
58void WT_UpdateLFO (S_LFO_CONTROL *pLFO, EAS_I16 phaseInc);
59
60#if defined(_FILTER_ENABLED) || defined(DLS_SYNTHESIZER)
61void WT_SetFilterCoeffs (S_WT_INT_FRAME *pIntFrame, EAS_I32 cutoff, EAS_I32 resonance);
62#endif
63
64#endif
65
66
67