1 /*---------------------------------------------------------------------------*
2   Project:  NintendoWare
3   File:     snd_CurveLfo.h
4 
5   Copyright (C)2009-2010 Nintendo Co., Ltd./HAL Laboratory, Inc.  All rights reserved.
6 
7   These coded instructions, statements, and computer programs contain
8   proprietary information of Nintendo of America Inc. and/or Nintendo
9   Company Ltd., and are protected by Federal copyright law.  They may
10   not be disclosed to third parties or copied or duplicated in any form,
11   in whole or in part, without the prior written consent of Nintendo.
12 
13   $Revision: 13145 $
14  *---------------------------------------------------------------------------*/
15 
16 #ifndef NW_SND_CURVE_LFO_H_
17 #define NW_SND_CURVE_LFO_H_
18 
19 #include <nn/types.h>
20 
21 namespace nw {
22 namespace snd {
23 namespace internal {
24 
25 /* ========================================================================
26         structure definition
27    ======================================================================== */
28 
29 struct CurveLfoParam
30 {
31     f32 depth;
32     f32 speed;   // [Hz]
33     u32 delay;
34     u8  range;
35     u8  padding[3];
36 
CurveLfoParamCurveLfoParam37     CurveLfoParam() { Initialize(); }
38     void Initialize();
39 };
40 
41 /* ========================================================================
42         class definition
43    ======================================================================== */
44 
45 class CurveLfo
46 {
47     /* ------------------------------------------------------------------------
48             constant declaration
49        ------------------------------------------------------------------------ */
50   private:
51     static const int TABLE_SIZE         = 32;
52     static const int PERIOD             = TABLE_SIZE * 4;
53 
54     /* ------------------------------------------------------------------------
55             static member
56        ------------------------------------------------------------------------ */
57   private:
58     static s8 GetSinIdx( int index );
59 
60    /* ------------------------------------------------------------------------
61             class member
62        ------------------------------------------------------------------------ */
63   public:
CurveLfo()64     CurveLfo() : m_DelayCounter(0), m_Counter( 0.0f ) {}
65     void Reset();
66 
67     void Update( int msec );
68     f32  GetValue() const;
69 
SetParam(const CurveLfoParam & lfoParam)70     void SetParam( const CurveLfoParam& lfoParam ) { m_Param = lfoParam; /* copy */ }
GetParam()71     CurveLfoParam& GetParam() { return m_Param; }
GetParam()72     const CurveLfoParam& GetParam() const { return m_Param; }
73 
74   private:
75     CurveLfoParam m_Param;
76     u32      m_DelayCounter;
77     f32      m_Counter;
78 };
79 
80 } // namespace nw::snd::internal
81 } // namespace nw::snd
82 } // namespace nw
83 
84 
85 #endif /* NW_SND_CURVE_LFO_H_ */
86 
87