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/*
* UAE - The Un*x Amiga Emulator
*
* Sound emulation stuff
*
* Copyright 1995, 1996, 1997 Bernd Schmidt
*/
#ifndef _UADE_AUDIO_H_
#define _UADE_AUDIO_H_
#include "sinctable.h"
#define AUDIO_DEBUG 0
/* Queue length 256 implies minimum emulated period of 8. This should be
* sufficient for all imaginable purposes. This must be power of two. */
#define SINC_QUEUE_LENGTH 256
typedef struct {
int time, output;
} sinc_queue_t;
extern struct audio_channel_data {
unsigned long adk_mask;
unsigned long evtime;
unsigned char dmaen, intreq2, data_written;
uaecptr lc, pt;
int state, wper, wlen;
int current_sample;
int sample_accum, sample_accum_time;
int output_state;
sinc_queue_t sinc_queue[SINC_QUEUE_LENGTH];
int sinc_queue_time;
int sinc_queue_head;
int vol;
uae_u16 dat, nextdat, per, len;
/* Debug variables */
uaecptr ptend, nextdatpt, nextdatptend, datpt, datptend;
} audio_channel[4];
extern void AUDxDAT (int nr, uae_u16 value);
extern void AUDxVOL (int nr, uae_u16 value);
extern void AUDxPER (int nr, uae_u16 value);
extern void AUDxLCH (int nr, uae_u16 value);
extern void AUDxLCL (int nr, uae_u16 value);
extern void AUDxLEN (int nr, uae_u16 value);
void audio_reset (void);
void audio_set_filter(int filter_type, int filter_force);
void audio_set_rate (int rate);
void audio_set_resampler(char *name);
void audio_use_text_scope(void);
void update_audio (void);
#endif
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