snd_EnvGenerator.h

#ifndef NW4R_SND_ENV_GENERATOR_H
#define NW4R_SND_ENV_GENERATOR_H
 
/*******************************************************************************
 * headers
 */
 
#include <types.h>
 
/*******************************************************************************
 * classes and functions
 */
 
namespace nw4r { namespace snd { namespace detail
{
    // [R89JEL]:/bin/RVL/Debug/mainD.elf:.debug::0x28b11
    class EnvGenerator
    {
    // enums
    public:
        // [R89JEL]:/bin/RVL/Debug/mainD.elf:.debug::0x28a77
        enum Status
        {
            STATUS_ATTACK,
            STATUS_HOLD,
            STATUS_DECAY,
            STATUS_SUSTAIN,
            STATUS_RELEASE,
        };
 
    // methods
    public:
        // cdtors
        EnvGenerator();
 
        // methods
        void Init(f32 initDecibel);
        void Update(int msec);
        void Reset(f32 initDecibel);
 
        Status GetStatus() const { return mStatus; }
        f32 GetValue() const;
 
        void SetStatus(Status status) { mStatus = status; }
        void SetAttack(int attack);
        void SetHold(int hold);
        void SetDecay(int decay);
        void SetSustain(int sustain);
        void SetRelease(int release);
 
    private:
        f32 CalcRelease(int release);
        s16 CalcDecibelSquare(int scale);
 
    // static members
    public:
        static int const CALC_DECIBEL_SCALE_MAX;
 
        static int const DECIBEL_SQUARE_TABLE_SIZE = 128;
 
        static int const RELEASE_INIT = 127;
        static int const SUSTAIN_INIT = 127;
        static int const DECAY_INIT = 127;
        static int const HOLD_INIT = 0;
        static int const ATTACK_INIT = 127;
        static f32 const volatile VOLUME_INIT;
 
    private:
        static s16 const DecibelSquareTable[DECIBEL_SQUARE_TABLE_SIZE];
 
    // members
    private:
        Status  mStatus;        // size 0x04, offset 0x00
        f32     mValue;         // size 0x04, offset 0x04
        f32     mDecay;         // size 0x04, offset 0x08
        f32     mRelease;       // size 0x04, offset 0x0c
        f32     mAttack;        // size 0x04, offset 0x10
        u8      mSustain;       // size 0x01, offset 0x14
        /* 1 byte padding */
        u16     mHold;          // size 0x02, offset 0x16
        u16     mHoldCounter;   // size 0x02, offset 0x18
        /* 2 bytes padding */
    }; // size 0x1c
}}} // namespace nw4r::snd::detail
 
#endif // NW4R_SND_ENV_GENERATOR_H