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https://github.com/n64decomp/mk64
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MegaMech
114 lines
3.2 KiB
C
114 lines
3.2 KiB
C
#ifndef AUDIO_INTERNAL_H
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#define AUDIO_INTERNAL_H
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#include <PR/ultratypes.h>
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// No-op printf macro which leaves string literals in rodata in IDO. IDO
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// doesn't support variadic macros, so instead we let the parameter list
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// expand to a no-op comma expression. Another possibility is that it might
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// have expanded to something with "if (0)". See also goddard/gd_main.h.
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// On US/JP, -sopt optimizes away these except for external.c.
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#ifdef __sgi
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#define stubbed_printf
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#else
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#define stubbed_printf(...)
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#endif
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#define stubbed_printf_0(msg) stubbed_printf(msg)
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#define stubbed_printf_1(msg, a) stubbed_printf(msg, a)
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#define stubbed_printf_2(msg, a, b) stubbed_printf(msg, a, b)
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#define stubbed_printf_3(msg, a, b, c) stubbed_printf(msg, a, b, c)
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struct AdsrEnvelope {
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s16 delay;
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s16 arg;
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}; // size = 0x4
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struct AdpcmLoop {
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u32 start;
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u32 end;
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u32 count;
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u32 pad;
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s16 state[16]; // only exists if count != 0. 8-byte aligned
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};
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struct AdpcmBook {
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s32 order;
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s32 npredictors;
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s16 book[1]; // size 8 * order * npredictors. 8-byte aligned
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};
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struct AudioBankSample {
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u8 unused;
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u8 loaded;
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u8 *sampleAddr;
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struct AdpcmLoop *loop;
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struct AdpcmBook *book;
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u32 sampleSize; // never read. either 0 or 1 mod 9, depending on padding
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};
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struct AudioBankSound {
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struct AudioBankSample *sample;
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f32 tuning; // frequency scale factor
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}; // size = 0x8
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struct NoteSub
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{
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/*0x00*/ volatile u8 enabled : 1;
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/*0x00*/ u8 needsInit : 1;
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/*0x00*/ u8 finished : 1;
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/*0x00*/ u8 envMixerNeedsInit : 1;
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/*0x00*/ u8 stereoStrongRight : 1;
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/*0x00*/ u8 stereoStrongLeft : 1;
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/*0x00*/ u8 stereoHeadsetEffects : 1;
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/*0x00*/ u8 usesHeadsetPanEffects : 1;
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/*0x01*/ u8 reverbIndex : 3;
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/*0x01*/ u8 bookOffset : 3;
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/*0x01*/ u8 isSyntheticWave : 1;
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/*0x01*/ u8 hasTwoAdpcmParts : 1;
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/*0x02*/ u8 bankId;
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/*0x03*/ u8 headsetPanRight;
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/*0x04*/ u8 headsetPanLeft;
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/*0x05*/ u8 reverbVol;
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/*0x06*/ u16 targetVolLeft;
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/*0x08*/ u16 targetVolRight;
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/*0x0A*/ u16 resamplingRateFixedPoint; // stored as signed but loaded as u16
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/*0x0C*/ union {
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s16 *samples;
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struct AudioBankSound *audioBankSound;
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} sound;
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};
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struct AudioSessionSettings {
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/*0x00*/ u32 frequency;
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/*0x04*/ u8 maxSimultaneousNotes;
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/*0x05*/ u8 reverbDownsampleRate; // always 1
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/*0x06*/ u16 reverbWindowSize;
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/*0x08*/ u16 reverbGain;
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/*0x0A*/ u16 volume;
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/*0x0C*/ u32 persistentSeqMem;
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/*0x10*/ u32 persistentBankMem;
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/*0x14*/ u32 temporarySeqMem;
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/*0x18*/ u32 temporaryBankMem;
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}; // size = 0x1C
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struct AudioBufferParametersEU {
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/*0x00*/ s16 presetUnk4; // audio frames per vsync?
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/*0x02*/ u16 frequency;
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/*0x04*/ u16 aiFrequency; // ?16
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/*0x06*/ s16 samplesPerFrameTarget;
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/*0x08*/ s16 maxAiBufferLength;
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/*0x0A*/ s16 minAiBufferLength;
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/*0x0C*/ s16 updatesPerFrame;
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/*0x0E*/ s16 samplesPerUpdate;
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/*0x10*/ s16 samplesPerUpdateMax;
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/*0x12*/ s16 samplesPerUpdateMin;
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/*0x14*/ f32 resampleRate; // contains 32000.0f / frequency
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/*0x18*/ f32 updatesPerFrameInv; // 1.0f / updatesPerFrame
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/*0x1C*/ f32 unkUpdatesPerFrameScaled; // 3.0f / (1280.0f * updatesPerFrame)
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};
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#endif
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