include/nitro/SND_exChannel_shared.h


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#ifndef GUARD_SND_EXCHANNEL_SHARED_H
#define GUARD_SND_EXCHANNEL_SHARED_H

#include "nitro/types.h"

#define SND_ENV_ATTACK 0
#define SND_ENV_DECAY 1
#define SND_ENV_SUSTAIN 2
#define SND_ENV_RELEASE 3

#define SND_CHN_TYPE_PCM 0
#define SND_CHN_TYPE_PSG 1
#define SND_CHN_TYPE_NOISE 2

#define SND_CHN_SYNC_START 0x1
#define SND_CHN_SYNC_STOP 0x2
#define SND_CHN_SYNC_TIMER 0x4
#define SND_CHN_SYNC_VOLUME 0x8
#define SND_CHN_SYNC_PAN 0x10

#define SND_LFO_PITCH 0
#define SND_LFO_VOLUME 1
#define SND_LFO_PAN 2

struct SNDWaveParam {
    u8 format;      // 0x0
    u8 loopEnabled; // 0x1
    u16 samplerate; // 0x2
    u16 timer;      // 0x4
    u16 loopStart;  // 0x6
    u32 loopLength; // 0x8
}; // size = 0xC

struct SNDLfoParam {
    u8 target;  // 0x0
    u8 speed;   // 0x1
    u8 depth;   // 0x2
    u8 range;   // 0x3
    u16 delay;  // 0x4
}; // size = 0x6

struct SNDLfo {
    struct SNDLfoParam param;   // 0x0
    u16 delayCounter;           // 0x6
    u16 counter;                // 0x8
}; // size = 0xA

struct SNDExChannel;

typedef void (*SNDExChannelCallback)(struct SNDExChannel *chn, int status, void *userData);

struct SNDExChannel {
    u8 id;              // 0x00
    u8 type;            // 0x01
    u8 envStatus;       // 0x02

    struct {
        u8 active : 1;
        u8 start : 1;
        u8 autoSweep : 1;
        u8 syncFlag : 5;
    } flags;            // 0x03

    u8 panRange;        // 0x04
    u8 rootMidiKey;     // 0x05
    s16 userDecay2;     // 0x06

    u8 midiKey;         // 0x08
    u8 velocity;        // 0x09
    s8 initPan;         // 0x0A
    s8 userPan;         // 0x0B

    s16 userDecay;      // 0x0C
    s16 userPitch;      // 0x0E

    s32 envAttenuation; // 0x10
    s32 sweepCounter;   // 0x14
    s32 sweepLength;    // 0x18

    u8 envAttack;       // 0x1C
    u8 envSustain;      // 0x1D
    u16 envDecay;       // 0x1E
    u16 envRelease;     // 0x20
    u8 priority;        // 0x22
    u8 pan;             // 0x23
    u16 volume;         // 0x24
    u16 timer;          // 0x26

    struct SNDLfo lfo;  // 0x28

    s16 sweepPitch;     // 0x32

    s32 length;         // 0x34

    struct SNDWaveParam waveParam;  // 0x38

    union {
        const void *waveDataPtr;
        s32 dutyCycle;
    };                  // 0x44

    SNDExChannelCallback callback; // 0x48
    void *callbackUserData; // 0x4C

    struct SNDExChannel *channelLLNext; // 0x50
};  // size = 0x54

#endif //GUARD_SND_EXCHANNEL_SHARED_H