Steve2/src/dev/audio/speaker.h

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//
// speaker.h
// A2Mac
//
// Created by Tamas Rudnai on 5/9/20.
// Copyright © 2020 GameAlloy. All rights reserved.
//
#ifndef speaker_h
#define speaker_h
#include <stdio.h>
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#include <OpenAL/al.h>
#include <OpenAL/alc.h>
// very loud
//#define SPKR_LEVEL_MIN (-28000)
//#define SPKR_LEVEL_MAX (+28000)
// loud
//#define SPKR_LEVEL_MIN (-5000)
//#define SPKR_LEVEL_MAX (+5000)
// medium
#define SPKR_LEVEL_MIN (-3000)
#define SPKR_LEVEL_MAX (+3000)
// quiet
//#define SPKR_LEVEL_MIN (-1000)
//#define SPKR_LEVEL_MAX (+1000)
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#define SPKR_LEVEL_ZERO 0 // as defined in OpenAL documentation for 8bit PCM
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extern const unsigned spkr_sample_rate;
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extern const unsigned spkr_buf_alloc_size;
extern unsigned spkr_buf_size;
extern unsigned spkr_fps;
extern int16_t spkr_samples [];
extern unsigned spkr_sample_idx;
extern int spkr_level;
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extern int freeBuffers;
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extern int spkr_extra_buf;
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extern unsigned spkr_play_timeout;
extern unsigned spkr_play_time;
extern void spkr_init(void);
extern void spkr_exit(void);
extern void spkr_update(void);
extern void spkr_toggle(void);
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extern void spkr_load_sfx( const char * bundlePath );
extern void spkr_play_disk_motor(void);
extern void spkr_stop_disk_motor( int time );
extern void spkr_update_disk_sfx(void);
extern void spkr_play_disk_arm(void);
extern void spkr_play_disk_ioerr(void);
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#endif /* speaker_h */