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#ifndef __SOUND_H__
#define __SOUND_H__
#include "defs.h"
struct sndchan
{
/* S1, S2, S3, S4 */
int on, len, skip, cont;
unsigned int pos;
/* S1, S2, S4 */
int enlen, envol, endir, enlenreload;
/* S1, S2 */
const byte *wave;
/* S1 only */
int swlen, swlenreload, swsteps, swstep, swdir;
/* S3 only */
int outputlevel;
/* S4 only */
int shiftskip, shiftpos, shiftright, shiftleft;
int nsteps, clock;
};
struct snd
{
int level1, level2, balance;
bool gbDigitalSound;
int rate;
int quality;
struct sndchan ch[4];
};
extern struct snd snd;
#if defined(ICODE_ATTR) && defined(CPU_ARM)
#undef ICODE_ATTR
#define ICODE_ATTR
#endif
byte sound_read(byte r) ICODE_ATTR;
void sound_write(byte r, byte b) ICODE_ATTR;
void sound_dirty(void);
void sound_reset(void);
void sound_mix(void) ICODE_ATTR;
#endif
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