#pragma once #include <stdint.h>#include <stdbool.h>#include <SDL2/SDL.h>#include "ft2_replayer.h"#include "ft2_cpu.h" enum{	FREQ_TABLE_LINEAR = 0,	FREQ_TABLE_AMIGA = 1,}; #define DEFAULT_AUDIO_FREQ 48000 #define MIN_AUDIO_FREQ 44100 #if CPU_64BIT#define MAX_AUDIO_FREQ 96000#else#define MAX_AUDIO_FREQ 48000#endif #define MAX_AUDIO_DEVICES 99 // more bits makes little sense here #define BPM_FRAC_BITS 52#define BPM_FRAC_SCALE (1ULL << BPM_FRAC_BITS)#define BPM_FRAC_MASK (BPM_FRAC_SCALE-1) #define TICK_TIME_FRAC_BITS 52#define TICK_TIME_FRAC_SCALE (1ULL << TICK_TIME_FRAC_BITS)#define TICK_TIME_FRAC_MASK (TICK_TIME_FRAC_SCALE-1) // for audio/video sync queue. (2^n-1 - don't change this! Queue buffer is already BIG in size)#define SYNC_QUEUE_LEN 4095 typedef struct audio_t{	char *currInputDevice, *currOutputDevice, *lastWorkingAudioDeviceName;	char *inputDeviceNames[MAX_AUDIO_DEVICES], *outputDeviceNames[MAX_AUDIO_DEVICES];	volatile bool locked, resetSyncTickTimeFlag, volumeRampingFlag;	bool linearPeriodsFlag, rescanAudioDevicesSupported;	volatile uint8_t interpolationType;	int32_t inputDeviceNum, outputDeviceNum, lastWorkingAudioFreq, lastWorkingAudioBits;	uint32_t quickVolRampSamples, freq; 	uint32_t tickSampleCounter, samplesPerTickInt, samplesPerTickIntTab[(MAX_BPM-MIN_BPM)+1];	uint64_t tickSampleCounterFrac, samplesPerTickFrac, samplesPerTickFracTab[(MAX_BPM-MIN_BPM)+1]; 	uint32_t audLatencyPerfValInt, tickTimeIntTab[(MAX_BPM-MIN_BPM)+1];	uint64_t audLatencyPerfValFrac, tickTimeFracTab[(MAX_BPM-MIN_BPM)+1]; 	uint64_t tickTime64, tickTime64Frac; 	float *fMixBufferL, *fMixBufferR;	double dHz2MixDeltaMul, dAudioLatencyMs; 	SDL_AudioDeviceID dev;	uint32_t wantFreq, haveFreq, wantSamples, haveSamples;} audio_t; typedef struct{	const int8_t *base8, *revBase8;	const int16_t *base16, *revBase16;	bool active, samplingBackwards, isFadeOutVoice, hasLooped;	uint8_t mixFuncOffset, panning, loopType, scopeVolume;	int32_t position, sampleEnd, loopStart, loopLength, oldPeriod;	uint32_t volumeRampLength; 	uintCPUWord_t positionFrac, delta, oldDelta, scopeDelta; 	// if (loopEnabled && hasLooped && samplingPos <= loopStart+SINC_MAX_LEFT_TAPS) readFixedTapsFromThisPointer();	const int8_t *leftEdgeTaps8;	const int16_t *leftEdgeTaps16; 	const float *fSincLUT;	double dVolume;	float fCurrVolumeL, fCurrVolumeR, fVolumeLDelta, fVolumeRDelta, fTargetVolumeL, fTargetVolumeR;} voice_t; #ifdef _MSC_VER#pragma pack(push)#pragma pack(1)#endiftypedef struct pattSyncData_t // used for audio/video sync queue (pack to save RAM){	uint8_t pattNum, globalVolume, songPos, tick, speed, row, BPM;	uint64_t timestamp;}#ifdef __GNUC____attribute__ ((packed))#endifpattSyncData_t;#ifdef _MSC_VER#pragma pack(pop)#endif typedef struct pattSync_t{	volatile int32_t readPos, writePos;	pattSyncData_t data[SYNC_QUEUE_LEN+1];} pattSync_t; typedef struct chSyncData_t{	syncedChannel_t channels[MAX_CHANNELS];	uint64_t timestamp;} chSyncData_t; typedef struct chSync_t{	volatile int32_t readPos, writePos;	chSyncData_t data[SYNC_QUEUE_LEN+1];} chSync_t; void resetCachedMixerVars(void);int32_t pattQueueReadSize(void);int32_t pattQueueWriteSize(void);bool pattQueuePush(pattSyncData_t t);bool pattQueuePop(void);bool pattQueuePop(void);pattSyncData_t *pattQueuePeek(void);uint64_t getPattQueueTimestamp(void);int32_t chQueueReadSize(void);int32_t chQueueWriteSize(void);bool chQueuePush(chSyncData_t t);bool chQueuePop(void);chSyncData_t *chQueuePeek(void);uint64_t getChQueueTimestamp(void);void resetSyncQueues(void); void decreaseMasterVol(void);void increaseMasterVol(void); void calcPanningTable(void);void setAudioAmp(int16_t amp, int16_t masterVol, bool bitDepth32Flag);void setNewAudioFreq(uint32_t freq);void setBackOldAudioFreq(void);void setMixerBPM(int32_t bpm);void audioSetVolRamp(bool volRamp);void audioSetInterpolationType(uint8_t interpolationType);void stopVoice(int32_t i);bool setupAudio(bool showErrorMsg);void closeAudio(void);void pauseAudio(void);void resumeAudio(void);bool setNewAudioSettings(void);void resetAudioDither(void);void lockAudio(void);void unlockAudio(void);void lockMixerCallback(void);void unlockMixerCallback(void);void resetRampVolumes(void);void updateVoices(void);void mixReplayerTickToBuffer(uint32_t samplesToMix, uint8_t *stream, uint8_t bitDepth); // in ft2_audio.cextern audio_t audio;extern pattSyncData_t *pattSyncEntry;extern chSyncData_t *chSyncEntry;extern chSync_t chSync;extern pattSync_t pattSync; extern volatile bool pattQueueClearing, chQueueClearing;