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MorsGames
GitHub Repository: MorsGames/sm64plus
 Path: blob/master/src/audio/synthesis.h
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#ifndef AUDIO_SYNTHESIS_H

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#define AUDIO_SYNTHESIS_H

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#include "internal.h"

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#ifdef VERSION_SH

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#define DEFAULT_LEN_1CH 0x180

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#define DEFAULT_LEN_2CH 0x300

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#else

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#define DEFAULT_LEN_1CH 0x140

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#define DEFAULT_LEN_2CH 0x280

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#endif

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#if defined(VERSION_EU) || defined(VERSION_SH)

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#define MAX_UPDATES_PER_FRAME 5

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#else

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#define MAX_UPDATES_PER_FRAME 4

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#endif

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struct ReverbRingBufferItem

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{

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    s16 numSamplesAfterDownsampling;

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    s16 chunkLen; // never read

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    s16 *toDownsampleLeft;

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    s16 *toDownsampleRight; // data pointed to by left and right are adjacent in memory

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    s32 startPos; // start pos in ring buffer

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    s16 lengthA; // first length in ring buffer (from startPos, at most until end)

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    s16 lengthB; // second length in ring buffer (from pos 0)

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}; // size = 0x14

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struct SynthesisReverb

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{

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    /*0x00, 0x00, 0x00*/ u8 resampleFlags;

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    /*0x01, 0x01, 0x01*/ u8 useReverb;

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    /*0x02, 0x02, 0x02*/ u8 framesLeftToIgnore;

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    /*0x03, 0x03, 0x03*/ u8 curFrame;

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#if defined(VERSION_EU) || defined(VERSION_SH)

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    /*      0x04, 0x04*/ u8 downsampleRate;

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#ifdef VERSION_SH

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    /*            0x05*/ s8 unk5;

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#endif

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    /*      0x06, 0x06*/ u16 windowSize; // same as bufSizePerChannel

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#endif

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#ifdef VERSION_SH

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    /*            0x08*/ u16 unk08;

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#endif

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    /*0x04, 0x08, 0x0A*/ u16 reverbGain;

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    /*0x06, 0x0A, 0x0C*/ u16 resampleRate;

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#ifdef VERSION_SH

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    /*            0x0E*/ u16 panRight;

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    /*            0x10*/ u16 panLeft;

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#endif

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    /*0x08, 0x0C, 0x14*/ s32 nextRingBufferPos;

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    /*0x0C, 0x10, 0x18*/ s32 unkC; // never read

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    /*0x10, 0x14, 0x1C*/ s32 bufSizePerChannel;

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    struct

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    {

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        s16 *left;

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        s16 *right;

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    } ringBuffer;

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    /*0x1C, 0x20, 0x28*/ s16 *resampleStateLeft;

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    /*0x20, 0x24, 0x2C*/ s16 *resampleStateRight;

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    /*0x24, 0x28, 0x30*/ s16 *unk24; // never read

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    /*0x28, 0x2C, 0x34*/ s16 *unk28; // never read

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    /*0x2C, 0x30, 0x38*/ struct ReverbRingBufferItem items[2][MAX_UPDATES_PER_FRAME];

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#if defined(VERSION_EU) || defined(VERSION_SH)

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    // Only used in sh:

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    /*            0x100*/ s16 *unk100;

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    /*            0x104*/ s16 *unk104;

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    /*            0x108*/ s16 *unk108;

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    /*            0x10C*/ s16 *unk10C;

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#endif

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}; // 0xCC <= size <= 0x100

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#if defined(VERSION_EU) || defined(VERSION_SH)

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extern struct SynthesisReverb gSynthesisReverbs[4];

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extern s8 gNumSynthesisReverbs;

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extern struct NoteSubEu *gNoteSubsEu;

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extern f32 gLeftVolRampings[3][1024];

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extern f32 gRightVolRampings[3][1024];

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extern f32 *gCurrentLeftVolRamping; // Points to any of the three left buffers above

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extern f32 *gCurrentRightVolRamping; // Points to any of the three right buffers above

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#else

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extern struct SynthesisReverb gSynthesisReverb;

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#endif

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#ifdef VERSION_SH

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extern s16 D_SH_803479B4;

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#endif

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u64 *synthesis_execute(u64 *cmdBuf, s32 *writtenCmds, s16 *aiBuf, s32 bufLen);

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#if defined(VERSION_JP) || defined(VERSION_US)

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void note_init_volume(struct Note *note);

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void note_set_vel_pan_reverb(struct Note *note, f32 velocity, f32 pan, u8 reverbVol);

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void note_set_frequency(struct Note *note, f32 frequency);

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void note_enable(struct Note *note);

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void note_disable(struct Note *note);

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#endif

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#endif // AUDIO_SYNTHESIS_H

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