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#ifndef GUARD_M4A_INTERNAL_H
#define GUARD_M4A_INTERNAL_H
#include "global.h"
typedef struct MusicPlayerTrack MusicPlayerTrack;
typedef struct MusicPlayerInfo MusicPlayerInfo;
typedef struct WaveData {
u16 type;
u16 status;
u32 freq;
u32 loopStart;
u32 size; // number of samples
s8 data[1]; // samples
} WaveData;
#define TONEDATA_TYPE_CGB 0x07
#define TONEDATA_TYPE_FIX 0x08
#define TONEDATA_TYPE_SPL 0x40 // key split
#define TONEDATA_TYPE_RHY 0x80 // rhythm
#define TONEDATA_P_S_PAN 0xc0
#define TONEDATA_P_S_PAM TONEDATA_P_S_PAN
typedef struct ToneData {
u8 type;
u8 key;
u8 length; // sound length (compatible sound)
u8 pan_sweep; // pan or sweep (compatible sound ch. 1)
WaveData* wav;
u8 attack;
u8 decay;
u8 sustain;
u8 release;
} ToneData;
typedef struct SongHeader {
u8 trackCount;
u8 blockCount;
u8 priority;
u8 reverb;
ToneData* tone;
u8* part[1];
} SongHeader;
typedef struct Song {
const SongHeader* header;
u16 musicPlayerIndex;
u16 me;
} Song;
typedef struct SoundChannel {
u8 statusFlags;
u8 type;
u8 rightVolume;
u8 leftVolume;
u8 attack;
u8 decay;
u8 sustain;
u8 release;
u8 key;
u8 envelopeVolume;
u8 envelopeVolumeRight;
u8 envelopeVolumeLeft;
u8 echoVolume;
u8 echoLength;
u8 unk0;
u8 unk1;
u8 gateTime;
u8 midiKey;
u8 velocity;
u8 priority;
u8 rhythmPan;
u8 unk2[3];
u32 count;
u32 fw;
u32 frequency;
WaveData* wav;
u32 currentPointer;
MusicPlayerTrack* track;
u32 prev;
u32 next;
u32 unk3;
u16 xpi;
u16 xpc;
} SoundChannel;
typedef void (*MPlayMainFunc)(MusicPlayerInfo*);
// typedef above
struct MusicPlayerInfo {
const SongHeader* songHeader;
u32 status;
u8 trackCount;
u8 priority;
u8 cmd;
u8 unk_B;
u32 clock;
u8 gap[8];
u8* memAccArea;
u16 tempoD;
u16 tempoU;
u16 tempoI;
u16 tempoC;
u16 fadeOI;
u16 fadeOC;
u16 fadeOV;
MusicPlayerTrack* tracks;
ToneData* tone;
u32 ident;
MPlayMainFunc func;
u32* intp;
};
#define MPT_FLG_VOLSET 0x01
#define MPT_FLG_VOLCHG 0x03
#define MPT_FLG_PITSET 0x04
#define MPT_FLG_PITCHG 0x0C
#define MPT_FLG_START 0x40
#define MPT_FLG_EXIST 0x80
// typedef above
struct MusicPlayerTrack {
u8 flags;
u8 wait;
u8 patternLevel;
u8 repN;
u8 gateTime;
u8 key;
u8 velocity;
u8 runningStatus;
u8 keyM;
u8 pitM;
s8 keyShift;
s8 keyShiftX;
s8 tune;
u8 pitX;
s8 bend;
u8 bendRange;
u8 volMR;
u8 volML;
u8 vol;
u8 volX;
s8 pan;
s8 panX;
s8 modM;
u8 mod;
u8 modT;
u8 lfoSpeed;
u8 lfoSpeedC;
u8 lfoDelay;
u8 lfoDelayC;
u8 priority;
u8 echoVolume;
u8 echoLength;
SoundChannel* chan;
ToneData tone;
u8 gap[10];
u16 unk_3A;
u32 unk_3C;
u8* cmdPtr;
u8* patternStack[3];
};
typedef struct MusicPlayer {
MusicPlayerInfo* info;
MusicPlayerTrack* tracks;
u8 nTracks;
u16 unk_A;
} MusicPlayer;
extern const MusicPlayer gMusicPlayers[];
extern const Song gSongTable[];
void m4aSoundMain(void);
void m4aSoundVSync(void);
void m4aSoundInit(void);
void m4aSongNumStart(u16 n);
void m4aSongNumStartOrContinue(u16 n);
void m4aSongNumStop(u16 n);
void m4aMPlayAllStop(void);
void m4aMPlayImmInit(MusicPlayerInfo* mplayInfo);
void m4aMPlayTempoControl(MusicPlayerInfo* mplayInfo, u16 tempo);
void m4aMPlayVolumeControl(MusicPlayerInfo* mplayInfo, u16 trackBits, u16 volume);
void m4aSoundVSyncOn(void);
void m4aSoundVSyncOff(void);
#endif // GUARD_M4A_INTERNAL_H
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