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#ifndef _Z64_AUDIO_H_
#define _Z64_AUDIO_H_
/**
* Structs in this repository have primarily been imported from the SM64 Decompilation.
* Many struct members are wrong; the symbol '?' next to an offset means the member is a guess.
*/
#define NO_LAYER ((SequenceChannelLayer*)(-1))
#define NO_CHANNEL ((SequenceChannel*)(-1))
#define TATUMS_PER_BEAT 48
#define IS_SEQUENCE_CHANNEL_VALID(ptr) ((u32)(ptr) != (u32)&gAudioContext.gSequenceChannelNone)
#define ADSR_STATE_DISABLED 0
#define ADSR_STATE_INITIAL 1
#define ADSR_STATE_START_LOOP 2
#define ADSR_STATE_LOOP 3
#define ADSR_STATE_FADE 4
#define ADSR_STATE_HANG 5
#define ADSR_STATE_DECAY 6
#define ADSR_STATE_RELEASE 7
#define ADSR_STATE_SUSTAIN 8
#define ADSR_DISABLE 0
#define ADSR_HANG -1
#define ADSR_GOTO -2
#define ADSR_RESTART -3
struct Note;
struct NotePool;
struct SequenceChannel;
struct SequenceChannelLayer;
typedef struct AudioListItem {
// A node in a circularly linked list. Each node is either a head or an item:
// - Items can be either detached (prev = NULL), or attached to a list.
// 'value' points to something of interest.
// - List heads are always attached; if a list is empty, its head points
// to itself. 'count' contains the size of the list.
// If the list holds notes, 'pool' points back to the pool where it lives.
// Otherwise, that member is NULL.
/* 0x00 */ struct AudioListItem* prev;
/* 0x04 */ struct AudioListItem* next;
/* 0x08 */ union {
void* value; // either Note* or SequenceChannelLayer*
s32 count;
} u;
/* 0x0C */ struct NotePool* pool;
} AudioListItem; // size = 0x10
typedef struct NotePool {
/* 0x00 */ AudioListItem disabled;
/* 0x10 */ AudioListItem decaying;
/* 0x20 */ AudioListItem releasing;
/* 0x30 */ AudioListItem active;
} NotePool;
// Pitch sliding by up to one octave in the positive direction. Negative
// direction is "supported" by setting extent to be negative. The code
// exterpolates exponentially in the wrong direction in that case, but that
// doesn't prevent seqplayer from doing it, AFAICT.
typedef struct {
/* 0x00 */ u8 mode; // bit 0x80 denotes something; the rest are an index 0-5
/* 0x02 */ u16 cur;
/* 0x04 */ u16 speed;
/* 0x08 */ f32 extent;
} Portamento; // size = 0xC
typedef struct {
/*?0x0 */ s16 delay;
/*?0x2 */ s16 arg;
} AdsrEnvelope; // size = 0x4?
typedef struct {
/*?0x00 */ u32 start;
/* 0x04 */ u32 end;
/*?0x08 */ u32 count;
/*?0x0C */ char unk_0C[0x4];
/*?0x10 */ s16 state[16]; // only exists if count != 0. 8-byte aligned
} AdpcmLoop; // size = 0x30
typedef struct {
/*?0x00 */ s32 order;
/*?0x04 */ s32 npredictors;
/*?0x08 */ s16 book[1]; // size 8 * order * npredictors. 8-byte aligned
} AdpcmBook;
typedef struct {
/* 0x00 */ u8 bits4 : 4;
/* 0x00 */ u8 bits2 : 2;
/* 0x00 */ u8 unk_bits2 : 2;
/* 0x01 */ u32 bits24 : 24;
/* 0x04 */ u8* sampleAddr;
/* 0x08 */ AdpcmLoop* loop;
/*?0x0C */ AdpcmBook* book;
} AudioBankSample; // size = 0x10
typedef struct {
/* 0x00 */ AudioBankSample* sample;
/* 0x04 */ f32 tuning; // frequency scale factor
} AudioBankSound; // size = 0x8
typedef struct {
/*?0x00 */ s16 numSamplesAfterDownsampling;
/*?0x02 */ s16 chunkLen; // never read
/* 0x04 */ s16* toDownsampleLeft;
/* 0x08 */ s16* toDownsampleRight; // data pointed to by left and right are adjacent in memory
/*?0x0C */ s32 startPos; // start pos in ring buffer
/*?0x10 */ s16 lengthA; // first length in ring buffer (from startPos, at most until end)
/*?0x12 */ s16 lengthB; // second length in ring buffer (from pos 0)
/* 0x14 */ u8 pad[8];
} ReverbRingBufferItem; // size = 0x1C
typedef struct {
/* 0x000 */ u8 unk_00;
/* 0x001 */ u8 useReverb;
/* 0x002 */ u8 unk_02;
/* 0x003 */ u8 unk_03;
/* 0x004 */ u8 downsampleRate;
/* 0x005 */ u8 unk_05;
/* 0x006 */ u16 windowSize;
/* 0x008 */ u16 unk_08;
/* 0x00A */ u16 unk_0A;
/* 0x00C */ u16 unk_0C;
/* 0x00E */ u16 unk_0E;
/* 0x010 */ u16 unk_10;
/* 0x012 */ u16 unk_12;
/* 0x014 */ u16 unk_14;
/* 0x016 */ u16 unk_16;
/* 0x018 */ u8 unk_18;
/* 0x01C */ s32 unk_1C;
/* 0x020 */ s32 unk_20;
/* 0x024 */ s32 unk_24;
/* 0x028 */ s16* unk_28;
/* 0x02C */ s16* unk_2C;
/* 0x030 */ void* unk_30;
/* 0x034 */ void* unk_34;
/* 0x038 */ void* unk_38;
/* 0x03C */ void* unk_3C;
/* 0x040 */ ReverbRingBufferItem items[2][5];
/*?0x158 */ ReverbRingBufferItem items2[2][5];
/* 0x270 */ s16* unk_270;
/* 0x274 */ s16* unk_274;
/* 0x278 */ void* unk_278;
/* 0x27C */ void* unk_27C;
/* 0x280 */ AudioBankSound sound;
/* 0x288 */ AudioBankSample sample;
/* 0x298 */ AdpcmLoop loop;
} SynthesisReverb; // size = 0x2C8
typedef struct {
/*?0x00 */ u8 loaded;
/* 0x01 */ u8 normalRangeLo;
/* 0x02 */ u8 normalRangeHi;
/* 0x03 */ u8 releaseRate;
/* 0x04 */ AdsrEnvelope* envelope;
/* 0x08 */ AudioBankSound lowNotesSound;
/* 0x10 */ AudioBankSound normalNotesSound;
/* 0x18 */ AudioBankSound highNotesSound;
} Instrument; // size >= 0x20
typedef struct {
/* 0x00 */ u8 releaseRate;
/* 0x01 */ u8 pan;
/*?0x02 */ u8 loaded;
/* 0x04 */ AudioBankSound sound;
/* 0x14 */ AdsrEnvelope *envelope;
} Drum; // size >= 0x14
typedef struct {
/* 0x00 */ u8 numInstruments;
/* 0x01 */ u8 numDrums;
/* 0x02 */ u8 unk_02;
/* 0x03 */ u8 unk_03;
/* 0x04 */ u16 numSfx;
/* 0x08 */ Instrument** instruments;
/* 0x0C */ Drum** drums;
/* 0x10 */ AudioBankSound* soundEffects;
} CtlEntry; // size = 0x14
typedef struct {
/* 0x00 */ u8* pc;
/* 0x04 */ u8* stack[4];
/* 0x14 */ u8 remLoopIters[4];
/* 0x18 */ u8 depth;
/* 0x19 */ s8 value;
} M64ScriptState; // size = 0x1C
// Also known as a Group, according to sm64 debug strings.
typedef struct {
/* 0x000 */ u8 enabled : 1;
/*?0x000 */ u8 finished : 1;
/* 0x000 */ u8 muted : 1;
/* 0x000 */ u8 seqDmaInProgress : 1;
/* 0x000 */ u8 bankDmaInProgress : 1;
/*?0x000 */ u8 recalculateVolume : 1;
/* 0x000 */ u8 unk_0b2 : 1;
/* 0x000 */ u8 unk_0b1 : 1;
/* 0x001 */ u8 state;
/* 0x002 */ u8 noteAllocPolicy;
/* 0x003 */ u8 muteBehavior;
/* 0x004 */ u8 seqId;
/* 0x005 */ u8 defaultBank;
/*?0x006 */ u8 loadingBankId;
/*?0x007 */ s8 seqVariationEu[1];
/* 0x008 */ u16 tempo; // tatums per minute
/* 0x00A */ u16 tempoAcc;
/* 0x00C */ u16 unk_0C;
/* 0x00E */ s16 transposition;
/* 0x010 */ u16 delay;
/* 0x012 */ u16 fadeTimer;
/* 0x014 */ u16 fadeTimerUnkEu;
/* 0x016 */ char pad_16[0x2];
/* 0x018 */ u8* seqData;
/* 0x01C */ f32 fadeVolume;
/* 0x020 */ f32 fadeVelocity;
/* 0x024 */ f32 volume;
/* 0x028 */ f32 muteVolumeScale;
/* 0x02C */ f32 fadeVolumeScale;
/* 0x030 */ f32 appliedFadeVolume;
/* 0x034 */ f32 unk_34;
/* 0x038 */ struct SequenceChannel* channels[16];
/*?0x078 */ M64ScriptState scriptState;
/* 0x094 */ u8* shortNoteVelocityTable;
/* 0x098 */ u8* shortNoteDurationTable;
/* 0x09C */ NotePool notePool;
/* 0x0DC */ s32 unk_DC;
/* 0x0D0 */ u32 unk_E0;
/* 0x0E4 */ u8 pad_E4[0x10]; // OSMesgQueue seqDmaMesgQueue;
/*?0x0F4 */ OSMesg seqDmaMesg;
/*?0x0F8 */ OSIoMesg seqDmaIoMesg;
/*?0x110 */ OSMesgQueue bankDmaMesgQueue;
/*?0x128 */ OSMesg bankDmaMesg;
/*?0x12C */ OSIoMesg bankDmaIoMesg;
/*?0x144 */ u8* bankDmaCurrMemAddr;
/*?0x148 */ u32 bankDmaCurrDevAddr;
/*?0x14C */ s32 bankDmaRemaining;
/* */ u8 pad_150[8];
/* 0x158 */ s8 unk_158[8]; // seqVariationEu? soundScriptIO?
} SequencePlayer; // size = 0x160
typedef struct {
/* 0x0 */ u8 releaseRate;
/* 0x1 */ u8 sustain;
/* 0x4 */ AdsrEnvelope* envelope;
} AdsrSettings; // size = 0x8
typedef struct {
/* 0x00 */ union {
struct A {
/* 0x00 */ u8 unk_0b80 : 1;
/* 0x00 */ u8 hang : 1;
/* 0x00 */ u8 decay : 1;
/* 0x00 */ u8 release : 1;
/* 0x00 */ u8 state : 4;
} s;
/* 0x00 */ u8 asByte;
} action;
/* 0x01 */ u8 envIndex;
/* 0x02 */ s16 delay;
/* 0x04 */ f32 sustain;
/* 0x08 */ f32 velocity;
/* 0x0C */ f32 fadeOutVel;
/* 0x10 */ f32 current;
/* 0x14 */ f32 target;
/* */ char pad_18[4];
/* 0x1C */ AdsrEnvelope *envelope;
} AdsrState;
typedef struct {
/* 0x00 */ u8 bit0 : 1;
/* 0x00 */ u8 bit1 : 1;
/* 0x00 */ u8 bit2 : 2;
/* 0x00 */ u8 strongRight : 1;
/* 0x00 */ u8 strongLeft : 1;
/* 0x00 */ u8 stereoHeadsetEffects : 1;
/* 0x00 */ u8 usesHeadsetPanEffects : 1;
} ReverbBitsData;
typedef union {
/* 0x00 */ ReverbBitsData s;
/* 0x00 */ u8 asByte;
} ReverbBits;
typedef struct {
/* 0x00 */ u8 reverb;
/* 0x01 */ u8 unk_1;
/* 0x02 */ u8 pan;
/* 0x03 */ ReverbBits reverbBits;
/* 0x04 */ u8 unk_4;
/* 0x06 */ u16 unk_6;
/* 0x08 */ f32 freqScale;
/* 0x0C */ f32 velocity;
/* 0x10 */ s16* unk_10;
/* 0x14 */ s16 unk_14[8];
} NoteAttributes; // size = 0x24
// Also known as a SubTrack, according to sm64 debug strings.
// Confusingly, a SubTrack is a container of Tracks.
typedef struct SequenceChannel {
/* 0x00 */ u8 enabled : 1;
/* 0x00 */ u8 finished : 1;
/* 0x00 */ u8 stopScript : 1;
/* 0x00 */ u8 stopSomething2 : 1; // sets SequenceChannelLayer.stopSomething
/* 0x00 */ u8 hasInstrument : 1;
/* 0x00 */ u8 stereoHeadsetEffects : 1;
/* 0x00 */ u8 largeNotes : 1; // notes specify duration and velocity
/* 0x00 */ u8 unused : 1; // still unused?
union {
struct {
/* 0x01 */ u8 freqScale : 1;
/* 0x01 */ u8 volume : 1;
/* 0x01 */ u8 pan : 1;
} s;
/* 0x01 */ u8 asByte;
} changes;
/* 0x02 */ u8 noteAllocPolicy;
/* 0x03 */ u8 muteBehavior;
/* 0x04 */ u8 reverb; // or dry/wet mix
/* 0x05 */ u8 notePriority; // 0-3
/* 0x06 */ u8 someOtherPriority;
/* 0x07 */ u8 bankId;
/* 0x08 */ u8 reverbIndex;
/* 0x09 */ u8 bookOffset;
/* 0x0A */ u8 newPan;
/* 0x0B */ u8 panChannelWeight; // proportion of pan that comes from the channel (0..128)
/* 0x0C */ u8 unk_0C;
/* 0x0D */ u8 velocityRandomVariance;
/* 0x0E */ u8 durationRandomVariance;
/* 0x0F */ u8 unk_0F;
/* 0x10 */ u16 vibratoRateStart;
/* 0x12 */ u16 vibratoExtentStart;
/* 0x14 */ u16 vibratoRateTarget;
/* 0x16 */ u16 vibratoExtentTarget;
/* 0x18 */ u16 vibratoRateChangeDelay;
/* 0x1A */ u16 vibratoExtentChangeDelay;
/* 0x1C */ u16 vibratoDelay;
/* 0x1E */ u16 delay;
/* 0x20 */ u16 unk_20;
/* 0x22 */ u16 pad_22;
/* 0x24 */ s16 instOrWave; // either 0 (none), instrument index + 1, or
// 0x80..0x83 for sawtooth/triangle/sine/square waves.
/* 0x26 */ s16 transposition;
/* 0x28 */ f32 volumeScale;
/* 0x2C */ f32 volume;
/* 0x30 */ s32 pan;
/* 0x34 */ f32 appliedVolume;
/* 0x38 */ f32 freqScale;
/*?0x3C */ u8 (*dynTable)[][2];
/* 0x40 */ struct Note* noteUnused; // still unused?
/*?0x44 */ struct SequenceChannelLayer* layerUnused; // still unused?
/* 0x48 */ Instrument* instrument;
/* 0x4C */ SequencePlayer* seqPlayer;
/* 0x50 */ struct SequenceChannelLayer* layers[4];
/* 0x60 */ M64ScriptState scriptState;
/* 0x7C */ AdsrSettings adsr;
/* 0x84 */ NotePool notePool;
/* 0xC4 */ s8 soundScriptIO[8]; // bridge between sound script and audio lib
/* 0xCC */ s16* unk_CC;
/* 0xD0 */ ReverbBits reverbBits;
} SequenceChannel; // size = 0xD4
// Also known as a Track, according to sm64 debug strings.
typedef struct SequenceChannelLayer {
/* 0x00 */ u8 enabled : 1;
/* 0x00 */ u8 finished : 1;
/* 0x00 */ u8 stopSomething : 1;
/* 0x00 */ u8 continuousNotes : 1; // keep the same note for consecutive notes with the same sound
/* 0x00 */ u8 bit3 : 1; // "loaded"?
/* 0x00 */ u8 ignoreDrumPan : 1;
/* 0x00 */ u8 bit1 : 1; // "has initialized continuous notes"?
/* 0x00 */ u8 notePropertiesNeedInit : 1;
/* 0x01 */ ReverbBits reverbBits;
/* 0x02 */ u8 instOrWave;
/* 0x03 */ u8 noteDuration;
/* 0x04 */ u8 semitone;
/* 0x05 */ u8 portamentoTargetNote;
/* 0x06 */ u8 pan; // 0..128
/* 0x07 */ u8 notePan;
/* 0x08 */ s16 delay;
/* 0x0A */ s16 duration;
/* 0x0C */ s16 delay2;
/* 0x0E */ u16 portamentoTime;
/* 0x10 */ s16 transposition; // #semitones added to play commands
// (m64 instruction encoding only allows referring to the limited range
// 0..0x3f; this makes 0x40..0x7f accessible as well)
/* 0x12 */ s16 shortNoteDefaultPlayPercentage;
/* 0x14 */ s16 playPercentage;
/* 0x18 */ AdsrSettings adsr;
/* 0x20 */ Portamento portamento;
/* 0x2C */ struct Note* note;
/* 0x30 */ f32 freqScale;
/* 0x34 */ f32 unk_34;
/* 0x38 */ f32 velocitySquare2;
/* 0x3C */ f32 velocitySquare; // not sure which one of those corresponds to the sm64 original
/* 0x40 */ f32 noteVelocity;
/* 0x44 */ f32 noteFreqScale;
/* 0x48 */ Instrument* instrument;
/* 0x4C */ AudioBankSound* sound;
/* 0x50 */ SequenceChannel* seqChannel;
/* 0x54 */ M64ScriptState scriptState;
/* 0x70 */ AudioListItem listItem;
} SequenceChannelLayer; // size = 0x80
typedef struct {
/*?00 */ s16 adpcmdecState[0x10];
/*?00 */ s16 finalResampleState[0x10];
/*?00 */ s16 mixEnvelopeState[0x28];
/*?00 */ s16 panResampleState[0x10];
/*?00 */ s16 panSamplesBuffer[0x20];
/*?00 */ s16 dummyResampleState[0x10];
} NoteSynthesisBuffers;
typedef struct {
/*?0x00 */ u8 restart;
/*?0x01 */ u8 sampleDmaIndex;
/*?0x02 */ u8 prevHeadsetPanRight;
/*?0x03 */ u8 prevHeadsetPanLeft;
/*?0x04 */ u16 samplePosFrac;
/*?0x08 */ s32 samplePosInt;
/* 0x0C */ NoteSynthesisBuffers* synthesisBuffers;
/*?0x10 */ s16 curVolLeft;
/*?0x12 */ s16 curVolRight;
} NoteSynthesisState;
typedef struct {
/* 0x00 */ struct SequenceChannel* seqChannel;
/* 0x04 */ u32 time;
/* 0x08 */ s16* curve;
/* 0x0C */ f32 extent;
/* 0x10 */ f32 rate;
/* 0x14 */ u8 active;
/*!0x16 */ u16 rateChangeTimer;
/* 0x18 */ u16 extentChangeTimer;
/* 0x1A */ u16 delay;
} VibratoState; // size = 0x1C
typedef struct {
/* 0x00 */ u8 priority;
/* 0x01 */ u8 waveId;
/* 0x02 */ u8 sampleCountIndex;
/* 0x03 */ u8 bankId;
/* 0x04 */ u8 unk_04;
/* 0x05 */ u8 stereoHeadsetEffects;
/* 0x06 */ s16 adsrVolScale; // unused?
/* 0x08 */ f32 portamentoFreqScale;
/* 0x0C */ f32 vibratoFreqScale;
/*?0x10 */ SequenceChannelLayer* prevParentLayer;
/* 0x14 */ SequenceChannelLayer* parentLayer;
/* 0x18 */ SequenceChannelLayer* wantedParentLayer;
/* 0x1C */ NoteAttributes attributes;
/* 0x40 */ AdsrState adsr;
// may contain portamento, vibratoState, if those are not part of Note itself
} NotePlaybackState;
typedef struct {
// these bitfields should perhaps be merged into a single struct
union {
struct {
/* 0x00 */ vu8 enabled : 1;
/* 0x00 */ u8 needsInit : 1;
/*?0x00 */ u8 finished : 1;
/*?0x00 */ u8 envMixerNeedsInit : 1;
/* 0x00 */ u8 stereoStrongRight : 1;
/* 0x00 */ u8 stereoStrongLeft : 1;
/* 0x00 */ u8 stereoHeadsetEffects : 1;
/* 0x00 */ u8 usesHeadsetPanEffects : 1;
} s;
/*?0x00 */ u8 asByte;
} bitField0;
union {
struct {
/*?0x01 */ u8 reverbIndex : 3;
/* 0x01 */ u8 bookOffset : 2;
/*?0x01 */ u8 bit2 : 1;
/*?0x01 */ u8 isSyntheticWave : 1;
/*?0x01 */ u8 hasTwoAdpcmParts : 1;
} s;
/*?0x01 */ u8 asByte;
} bitField1;
/* 0x02 */ u8 unk_2;
/*?0x03 */ u8 headsetPanRight;
/*?0x04 */ u8 headsetPanLeft;
/*?0x05 */ u8 reverbVol;
/* 0x06 */ u8 unk_06;
/* 0x07 */ u8 unk_07;
/* 0x08 */ u16 targetVolLeft;
/* 0x0A */ u16 targetVolRight;
/*?0x0C */ u16 resamplingRateFixedPoint; // stored as signed but loaded as u16
/* 0x0E */ s16 unk_10;
/* 0x10 */ union {
s16* samples;
AudioBankSound* audioBankSound;
} sound; // not sure if actually a union
/* 0x14 */ s16* unk_14;
/* 0x18 */ char pad_18[0x8];
} NoteSubEu; // size = 0x20
typedef struct Note {
/* 0x00 */ AudioListItem listItem;
/*?0x10 */ NoteSynthesisState synthesisState;
/* 0x24 */ char pad_24[0xC];
/* 0x30 */ NotePlaybackState playbackState;
/* 0x90 */ Portamento portamento;
/* 0x9C */ VibratoState vibratoState;
/* 0xB8 */ char pad_B8[0x4];
/* 0xBC */ u32 unk_BC;
/* 0xC0 */ NoteSubEu noteSubEu;
} Note; // size = 0xE0
typedef struct {
/* 0x00 */ u8 downsampleRate;
/* 0x02 */ u16 windowSize;
/* 0x04 */ u16 unk_4;
/* 0x06 */ u16 unk_6;
/* 0x08 */ u16 unk_8;
/* 0x0A */ u16 unk_A;
/* 0x0C */ u16 unk_C;
/* 0x0E */ u16 unk_E;
/* 0x10 */ s8 unk_10;
/* 0x12 */ u16 unk_12;
/* 0x14 */ s16 unk_14;
/* 0x16 */ s16 unk_16;
} ReverbSettings; // size = 0x18
typedef struct {
/*?0x00 */ u32 frequency;
/*?0x04 */ u8 unk_04;
/* 0x05 */ u8 maxSimultaneousNotes;
/* 0x06 */ u8 numSequencePlayers;
/* 0x07 */ u8 pad_07[2];
/* 0x09 */ u8 numReverbs;
/* 0x0A */ u8 pad_0A[2];
/* 0x0C */ ReverbSettings* reverbSettings;
/* 0x10 */ u16 unk_10;
/* 0x12 */ u16 unk_12;
/* 0x14 */ u16 unk_14;
/* 0x18 */ u32 persistentSeqMem;
/* 0x1C */ u32 persistentBankMem;
/* 0x20 */ u32 persistentUnusedMem;
/* 0x24 */ u32 temporarySeqMem;
/* 0x28 */ u32 temporaryBankMem;
/* 0x2C */ u32 temporaryUnusedMem;
/* 0x30 */ s32 unk_30;
/* 0x34 */ s32 unk_34;
} AudioSessionSettings; // size = 0x38
typedef struct {
/* 0x00 */ s16 presetUnk4;
/* 0x02 */ u16 frequency;
/* 0x04 */ u16 aiFrequency;
/* 0x06 */ s16 samplesPerFrameTarget;
/* 0x08 */ s16 maxAiBufferLength;
/* 0x0A */ s16 minAiBufferLength;
/* 0x0C */ s16 updatesPerFrame;
/* 0x0E */ s16 samplesPerUpdate;
/* 0x10 */ s16 samplesPerUpdateMax;
/* 0x12 */ s16 samplesPerUpdateMin;
/* 0x14 */ s16 numSequencePlayers;
/* 0x18 */ f32 resampleRate;
/* 0x1C */ f32 updatesPerFrameInv;
/* 0x20 */ f32 unkUpdatesPerFrameScaled;
/* 0x24 */ f32 unk_24;
} AudioBufferParameters;
typedef struct {
/* 0x0 */ u8* start;
/* 0x4 */ u8* cur;
/* 0x8 */ s32 size;
/* 0xC */ s32 unused; // set to 0, never read
} SoundAllocPool; // size = 0x10
typedef struct {
/* 0x0 */ u8 *ptr;
/* 0x4 */ u32 size;
/* 0x8 */ s16 poolIndex;
/* 0xA */ s16 id; // seqId or bankId
} SeqOrBankEntry; // size = 0xC
typedef struct {
/* 0x00 */ s8 unk_00;
/* 0x01 */ s8 unk_01;
/* 0x02 */ s8 unk_02;
/* 0x03 */ char pad[0x5];
/* 0x08 */ u8* unk_08;
/* 0x0C */ void* unk_0C;
/* 0x10 */ u32 size;
} UnkHeapEntry; // size = 0x14
typedef struct {
/* 0x000 */ SoundAllocPool pool;
/* 0x010 */ UnkHeapEntry entries[32];
/* 0x290 */ s32 size;
} UnkPool; // size = 0x294
typedef struct
{
/* 0x00*/ u32 numEntries;
/* 0x04*/ SoundAllocPool pool;
/* 0x14*/ SeqOrBankEntry entries[16];
} PersistentPool; // size = 0xD4
typedef struct
{
/* 0x00*/ u32 nextSide;
/* 0x04*/ SoundAllocPool pool;
/* 0x14*/ SeqOrBankEntry entries[2];
} TemporaryPool; // size = 0x3C
typedef struct
{
/* 0x000*/ PersistentPool persistent;
/* 0x0D4*/ TemporaryPool temporary;
/* 0x100*/ u8 pad[0x10];
} SoundMultiPool; // size = 0x110
typedef struct {
u32 wantPersistent;
u32 wantTemporary;
} AudioPoolSplit2; // size = 0x8
typedef struct {
u32 wantSeq;
u32 wantBank;
u32 wantUnused;
} AudioPoolSplit3; // size = 0xC
typedef struct {
u32 wantSeq;
u32 wantBank;
u32 wantUnused;
u32 wantCustom;
} AudioPoolSplit4; // size = 0x10
typedef struct {
u8* unk_0;
u8* unk_4;
u32 unk_8;
s8 unk_C;
} Struct_800E0E0C_2;
typedef struct {
char pad[0xC];
Struct_800E0E0C_2 unk_C[1]; // unknown size
} ManyStruct_800E0E0C_2;
typedef struct {
/* 0x00 */ s32 unk_00;
/* 0x04 */ AudioBankSample* sample;
/* 0x08 */ u8* unk_08;
/* 0x0C */ s32 pad;
/* 0x10 */ s32 unk_10;
} AudioStruct0D68; // size = 0x14
typedef struct {
/* 0x0000 */ char unk_0000;
/* 0x0001 */ s8 gNumSynthesisReverbs;
/* 0x0002 */ u16 unk_2;
/* 0x0004 */ u16 unk_4;
/* 0x0006 */ char unk_0006[0x0e];
/* 0x0014 */ NoteSubEu* gNoteSubsEu;
/* 0x0018 */ SynthesisReverb gSynthesisReverbs[4];
/* 0x0B38 */ char unk_0B38[0x230];
/* 0x0D68 */ AudioStruct0D68 unk_0D68[128]; // guessing at size
/* 0x1768 */ char unk_1768[4];
/* 0x176C */ s32 unk_176C;
/* 0x1770 */ char unk_1770[0xEB0];
/* 0x2620 */ s32 gSampleDmaNumListItems;
/* 0x2624 */ char unk_2624[0x210];
/* 0x2834 */ s16* unk_2834;
/* 0x2838 */ ManyStruct_800E0E0C_2* unk_2838;
/* 0x283C */ char unk_283C[0x8];
/* 0x2844 */ CtlEntry* gCtlEntries;
/* 0x2848 */ AudioBufferParameters gAudioBufferParameters;
/* 0x2870 */ f32 unk_2870;
/* 0x2874 */ s32 unk_2874;
/* 0x2874 */ s32 unk_2878;
/* 0x287C */ char unk_287C[0x14];
/* 0x2890 */ s32 gMaxAudioCmds;
/* 0x2894 */ s32 gMaxSimultaneousNotes; // (bad name)
/* 0x2898 */ s16 gTempoInternalToExternal;
/* 0x289A */ s8 gSoundMode;
/* 0x289B */ char unk_289B[0xD];
/* 0x28A8 */ s32 unk_28A8;
/* 0x28AC */ u64* gAudioCmdBuffers[2];
/* 0x28B4 */ char unk_28B4[0xAC];
/* 0x2960 */ f32 unk_2960;
/* 0x2964 */ s32 gRefreshRate;
/* 0x2968 */ s16* unk_2968[3];
/* 0x2974 */ s16 unk_2974[3];
/* 0x297C */ u32 gAudioRandom;
/* 0x2980 */ s32 gAudioErrorFlags;
/* 0x2984 */ char unk_2984[0xC];
/* 0x2990 */ SoundAllocPool gAudioSessionPool;
/* 0x29A0 */ SoundAllocPool gUnkPool;
/* 0x29B0 */ SoundAllocPool gAudioInitPool;
/* 0x29C0 */ SoundAllocPool gNotesAndBuffersPool;
/* 0x29D0 */ char unk_29D0[0x20]; // probably two unused pools
/* 0x29F0 */ SoundAllocPool gSeqAndBankPool;
/* 0x2A00 */ SoundAllocPool gPersistentCommonPool;
/* 0x2A10 */ SoundAllocPool gTemporaryCommonPool;
/* 0x2A20 */ SoundMultiPool gSeqLoadedPool;
/* 0x2B30 */ SoundMultiPool gBankLoadedPool;
/* 0x2C40 */ SoundMultiPool gUnusedLoadedPool; // rename after we figure out what this is
/* 0x2D50 */ SoundAllocPool unk_2D50;
/* 0x2D60 */ SeqOrBankEntry unk_2D60[32];
/* 0x2EE0 */ UnkPool unk_2EE0;
/* 0x3174 */ UnkPool unk_3174;
/* 0x3408 */ AudioPoolSplit4 sSessionPoolSplit;
/* 0x3418 */ AudioPoolSplit2 sSeqAndBankPoolSplit;
/* 0x3420 */ AudioPoolSplit3 sPersistentCommonPoolSplit;
/* 0x342C */ AudioPoolSplit3 sTemporaryCommonPoolSplit;
/* 0x3438 */ u8 gUnusedLoadStatus[0x30];
/* 0x3468 */ u8 gBankLoadStatus[0x30];
/* 0x3498 */ u8 gSeqLoadStatus[0x80];
/* 0x3518 */ volatile u8 gAudioResetStatus;
/* 0x3519 */ u8 gAudioResetPresetIdToLoad;
/* 0x351C */ s32 gAudioResetFadeOutFramesLeft;
/* 0x3520 */ f32* unk_3520;
/* 0x3524 */ u8* gAudioHeap;
/* 0x3528 */ u32 gAudioHeapSize;
/* 0x352C */ Note* gNotes;
/* 0x3530 */ SequencePlayer gSequencePlayers[4];
/* 0x3AB0 */ SequenceChannelLayer gSequenceLayers[64];
/* 0x5AB0 */ SequenceChannel gSequenceChannelNone;
/* 0x5B84 */ s32 gNoteSubEuOffset;
/* 0x5B88 */ AudioListItem gLayerFreeList;
} AudioContext; // size >= 0x5c50
typedef struct {
/* 0x00 */ u8 reverb; // i.e. volume
/* 0x01 */ u8 unk_1;
/* 0x02 */ u8 pan;
/* 0x03 */ ReverbBits reverbBits;
/* 0x04 */ f32 frequency;
/* 0x08 */ f32 velocity;
/* 0x0C */ char unk_0C[0x4];
/* 0x10 */ s16* unk_10;
/* 0x14 */ u8 unk_14;
/* 0x16 */ u16 unk_16;
} Reverb; // size >= 0x18
typedef struct {
/* 0x00 */ f32* posX;
/* 0x04 */ f32* posY;
/* 0x08 */ f32* posZ;
/* 0x0C */ u8 unk_C;
/* 0x10 */ f32* unk_10;
/* 0x14 */ f32* unk_14;
/* 0x18 */ f32* unk_18;
/* 0x1C */ f32 unk_1C;
/* 0x20 */ u32 unk_20;
/* 0x24 */ u8 unk_24;
/* 0x26 */ u16 unk_26;
/* 0x28 */ u16 unk_28; // "flag"
/* 0x2A */ u8 unk_2A;
/* 0x2B */ u8 unk_2B;
/* 0x2C */ u8 prev; // prev bank index
/* 0x2D */ u8 next; // next bank index
/* 0x2E */ u8 unk_2E;
/* 0x2F */ u8 unk_2F;
} SoundBankEntry; // size = 0x30
/*
* SFX IDs
*
* index 0000000111111111 observed in audio code
* & 200 0000001000000000 single bit
* & 400 0000010000000000 single bit
* & 800 0000100000000000 single bit, what we currently call SFX_FLAG
* & 600 0000011000000000 2 bits
* & A00 0000101000000000 2 bits
* & C00 0000110000000000 2 bits, observed in audio code
* & E00 0000111000000000 all 3 bits
* bank 1111000000000000 observed in audio code
*
*/
#define SFX_BANK_SHIFT(sfxId) ((sfxId >> 0xC) & 0xFF)
#define SFX_BANK_MASK(sfxId) (sfxId & 0xF000)
#define SFX_INDEX(sfxId) (sfxId & 0x01FF)
#define SFX_BANK(sfxId) SFX_BANK_SHIFT(SFX_BANK_MASK(sfxId))
#endif
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