76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
#ifndef AUDIO_SYNTHESIS_H
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#define AUDIO_SYNTHESIS_H
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#include "internal.h"
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#define DEFAULT_LEN_1CH 0x140
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#define DEFAULT_LEN_2CH 0x280
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#ifdef VERSION_EU
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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 lengths[2]; // first length in ring buffer (max until end) and 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*/ u8 resampleFlags;
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/*0x01, 0x01*/ u8 useReverb;
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/*0x02, 0x02*/ u8 framesLeftToIgnore;
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/*0x03, 0x03*/ u8 curFrame;
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#ifdef VERSION_EU
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/* 0x04*/ u8 downsampleRate;
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/* 0x06*/ u16 windowSize; // same as bufSizePerChannel
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#endif
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/*0x04, 0x08*/ u16 reverbGain;
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/*0x06, 0x0A*/ u16 resampleRate;
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/*0x08, 0x0C*/ s32 nextRingBufferPos;
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/*0x0C, 0x10*/ s32 unkC; // never read
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/*0x10, 0x14*/ 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*/ s16 *resampleStateLeft;
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/*0x20, 0x24*/ s16 *resampleStateRight;
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/*0x24, 0x28*/ s16 *unk24; // never read
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/*0x28, 0x2C*/ s16 *unk28; // never read
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/*0x2C, 0x30*/ struct ReverbRingBufferItem items[2][MAX_UPDATES_PER_FRAME];
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#ifdef VERSION_EU
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u8 pad[16];
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#endif
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}; // 0xCC <= size <= 0x100
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#if defined(VERSION_EU)
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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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u64 *synthesis_execute(u64 *cmdBuf, s32 *writtenCmds, u16 *aiBuf, s32 bufLen);
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#ifndef VERSION_EU
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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 reverb);
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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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