mirror of
https://github.com/italicsjenga/agb.git
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320 lines
7.3 KiB
C
320 lines
7.3 KiB
C
/* Copyright (c) 2013-2016 Jeffrey Pfau
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GBA_AUDIO_H
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#define GBA_AUDIO_H
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#include <mgba-util/common.h>
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CXX_GUARD_START
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#include <mgba/core/cpu.h>
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#include <mgba/core/log.h>
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#include <mgba/internal/gb/audio.h>
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#include <mgba-util/circle-buffer.h>
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#define GBA_AUDIO_FIFO_SIZE 8
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#define MP2K_MAGIC 0x68736D53
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#define MP2K_MAX_SOUND_CHANNELS 12
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mLOG_DECLARE_CATEGORY(GBA_AUDIO);
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struct GBADMA;
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extern const unsigned GBA_AUDIO_SAMPLES;
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extern const int GBA_AUDIO_VOLUME_MAX;
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struct GBAAudioFIFO {
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uint32_t fifo[GBA_AUDIO_FIFO_SIZE];
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int fifoWrite;
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int fifoRead;
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uint32_t internalSample;
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int internalRemaining;
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int dmaSource;
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int8_t sample;
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};
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DECL_BITFIELD(GBARegisterSOUNDCNT_HI, uint16_t);
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DECL_BITS(GBARegisterSOUNDCNT_HI, Volume, 0, 2);
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DECL_BIT(GBARegisterSOUNDCNT_HI, VolumeChA, 2);
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DECL_BIT(GBARegisterSOUNDCNT_HI, VolumeChB, 3);
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DECL_BIT(GBARegisterSOUNDCNT_HI, ChARight, 8);
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DECL_BIT(GBARegisterSOUNDCNT_HI, ChALeft, 9);
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DECL_BIT(GBARegisterSOUNDCNT_HI, ChATimer, 10);
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DECL_BIT(GBARegisterSOUNDCNT_HI, ChAReset, 11);
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DECL_BIT(GBARegisterSOUNDCNT_HI, ChBRight, 12);
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DECL_BIT(GBARegisterSOUNDCNT_HI, ChBLeft, 13);
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DECL_BIT(GBARegisterSOUNDCNT_HI, ChBTimer, 14);
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DECL_BIT(GBARegisterSOUNDCNT_HI, ChBReset, 15);
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DECL_BITFIELD(GBARegisterSOUNDBIAS, uint16_t);
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DECL_BITS(GBARegisterSOUNDBIAS, Bias, 0, 10);
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DECL_BITS(GBARegisterSOUNDBIAS, Resolution, 14, 2);
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struct GBAAudioMixer;
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struct GBAAudio {
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struct GBA* p;
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struct GBAudio psg;
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struct GBAAudioFIFO chA;
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struct GBAAudioFIFO chB;
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int16_t lastLeft;
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int16_t lastRight;
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int clock;
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uint8_t volume;
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bool volumeChA;
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bool volumeChB;
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bool chARight;
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bool chALeft;
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bool chATimer;
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bool chBRight;
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bool chBLeft;
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bool chBTimer;
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bool enable;
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size_t samples;
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unsigned sampleRate;
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GBARegisterSOUNDBIAS soundbias;
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struct GBAAudioMixer* mixer;
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bool externalMixing;
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int32_t sampleInterval;
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bool forceDisableChA;
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bool forceDisableChB;
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int masterVolume;
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struct mTimingEvent sampleEvent;
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};
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struct GBAStereoSample {
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int16_t left;
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int16_t right;
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};
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struct GBAMP2kADSR {
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uint8_t attack;
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uint8_t decay;
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uint8_t sustain;
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uint8_t release;
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};
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struct GBAMP2kSoundChannel {
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uint8_t status;
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uint8_t type;
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uint8_t rightVolume;
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uint8_t leftVolume;
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struct GBAMP2kADSR adsr;
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uint8_t ky;
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uint8_t envelopeV;
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uint8_t envelopeRight;
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uint8_t envelopeLeft;
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uint8_t echoVolume;
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uint8_t echoLength;
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uint8_t d1;
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uint8_t d2;
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uint8_t gt;
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uint8_t midiKey;
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uint8_t ve;
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uint8_t pr;
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uint8_t rp;
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uint8_t d3[3];
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uint32_t ct;
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uint32_t fw;
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uint32_t freq;
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uint32_t waveData;
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uint32_t cp;
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uint32_t track;
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uint32_t pp;
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uint32_t np;
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uint32_t d4;
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uint16_t xpi;
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uint16_t xpc;
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};
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struct GBAMP2kContext {
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uint32_t magic;
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uint8_t pcmDmaCounter;
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uint8_t reverb;
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uint8_t maxChans;
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uint8_t masterVolume;
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uint8_t freq;
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uint8_t mode;
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uint8_t c15;
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uint8_t pcmDmaPeriod;
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uint8_t maxLines;
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uint8_t gap[3];
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int32_t pcmSamplesPerVBlank;
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int32_t pcmFreq;
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int32_t divFreq;
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uint32_t cgbChans;
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uint32_t func;
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uint32_t intp;
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uint32_t cgbSound;
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uint32_t cgbOscOff;
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uint32_t midiKeyToCgbFreq;
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uint32_t mPlayJumpTable;
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uint32_t plynote;
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uint32_t extVolPit;
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uint8_t gap2[16];
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struct GBAMP2kSoundChannel chans[MP2K_MAX_SOUND_CHANNELS];
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};
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struct GBAMP2kMusicPlayerInfo {
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uint32_t songHeader;
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uint32_t status;
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uint8_t trackCount;
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uint8_t priority;
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uint8_t cmd;
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uint8_t unk_B;
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uint32_t clock;
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uint8_t gap[8];
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uint32_t memAccArea;
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uint16_t tempoD;
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uint16_t tempoU;
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uint16_t tempoI;
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uint16_t tempoC;
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uint16_t fadeOI;
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uint16_t fadeOC;
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uint16_t fadeOV;
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uint32_t tracks;
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uint32_t tone;
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uint32_t magic;
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uint32_t func;
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uint32_t intp;
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};
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struct GBAMP2kInstrument {
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uint8_t type;
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uint8_t key;
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uint8_t length;
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union {
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uint8_t pan;
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uint8_t sweep;
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} ps;
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union {
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uint32_t waveData;
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uint32_t subTable;
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} data;
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union {
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struct GBAMP2kADSR adsr;
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uint32_t map;
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} extInfo;
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};
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struct GBAMP2kMusicPlayerTrack {
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uint8_t flags;
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uint8_t wait;
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uint8_t patternLevel;
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uint8_t repN;
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uint8_t gateTime;
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uint8_t key;
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uint8_t velocity;
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uint8_t runningStatus;
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uint8_t keyM;
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uint8_t pitM;
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int8_t keyShift;
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int8_t keyShiftX;
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int8_t tune;
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uint8_t pitX;
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int8_t bend;
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uint8_t bendRange;
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uint8_t volMR;
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uint8_t volML;
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uint8_t vol;
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uint8_t volX;
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int8_t pan;
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int8_t panX;
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int8_t modM;
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uint8_t mod;
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uint8_t modT;
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uint8_t lfoSpeed;
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uint8_t lfoSpeedC;
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uint8_t lfoDelay;
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uint8_t lfoDelayC;
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uint8_t priority;
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uint8_t echoVolume;
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uint8_t echoLength;
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uint32_t chan;
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struct GBAMP2kInstrument instrument;
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uint8_t gap[10];
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uint16_t unk_3A;
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uint32_t unk_3C;
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uint32_t cmdPtr;
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uint32_t patternStack[3];
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};
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struct GBAMP2kTrack {
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struct GBAMP2kMusicPlayerTrack track;
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struct GBAMP2kSoundChannel* channel;
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uint8_t lastCommand;
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struct CircleBuffer buffer;
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uint32_t samplePlaying;
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float currentOffset;
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bool waiting;
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};
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struct GBAAudioMixer {
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struct mCPUComponent d;
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struct GBAAudio* p;
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uint32_t contextAddress;
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bool (*engage)(struct GBAAudioMixer* mixer, uint32_t address);
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void (*vblank)(struct GBAAudioMixer* mixer);
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void (*step)(struct GBAAudioMixer* mixer);
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struct GBAMP2kContext context;
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struct GBAMP2kMusicPlayerInfo player;
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struct GBAMP2kTrack activeTracks[MP2K_MAX_SOUND_CHANNELS];
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double tempo;
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double frame;
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struct GBAStereoSample last;
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};
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void GBAAudioInit(struct GBAAudio* audio, size_t samples);
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void GBAAudioReset(struct GBAAudio* audio);
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void GBAAudioDeinit(struct GBAAudio* audio);
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void GBAAudioResizeBuffer(struct GBAAudio* audio, size_t samples);
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void GBAAudioScheduleFifoDma(struct GBAAudio* audio, int number, struct GBADMA* info);
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void GBAAudioWriteSOUND1CNT_LO(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND1CNT_HI(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND1CNT_X(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND2CNT_LO(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND2CNT_HI(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND3CNT_LO(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND3CNT_HI(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND3CNT_X(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND4CNT_LO(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUND4CNT_HI(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUNDCNT_LO(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUNDCNT_HI(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUNDCNT_X(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteSOUNDBIAS(struct GBAAudio* audio, uint16_t value);
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void GBAAudioWriteWaveRAM(struct GBAAudio* audio, int address, uint32_t value);
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uint32_t GBAAudioReadWaveRAM(struct GBAAudio* audio, int address);
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uint32_t GBAAudioWriteFIFO(struct GBAAudio* audio, int address, uint32_t value);
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void GBAAudioSampleFIFO(struct GBAAudio* audio, int fifoId, int32_t cycles);
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struct GBASerializedState;
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void GBAAudioSerialize(const struct GBAAudio* audio, struct GBASerializedState* state);
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void GBAAudioDeserialize(struct GBAAudio* audio, const struct GBASerializedState* state);
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float GBAAudioCalculateRatio(float inputSampleRate, float desiredFPS, float desiredSampleRatio);
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CXX_GUARD_END
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#endif
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