src/hardware/snd_pc98/sound/sound.h

#ifndef SOUNDCALL
#define SOUNDCALL
#endif

#if !defined(DISABLE_SOUND)

typedef void (SOUNDCALL * SOUNDCB)(void *hdl, SINT32 *pcm, UINT count);

typedef struct {
        UINT    rate;
        UINT32  hzbase;
        UINT32  clockbase;
        UINT32  minclock;
        UINT32  lastclock;
        UINT    writecount;
} SOUNDCFG;


#ifdef __cplusplus
extern "C" {
#endif

extern  SOUNDCFG        soundcfg;

BOOL sound_create(UINT rate, UINT ms);
void sound_destroy(void);

void sound_reset(void);
void sound_changeclock(void);
void sound_streamregist(void *hdl, SOUNDCB cbfn);

void sound_sync(void);

const SINT32 *sound_pcmlock(void);
void sound_pcmunlock(const SINT32 *hdl);

#if defined(SUPPORT_WAVEREC)
BOOL sound_recstart(const OEMCHAR *filename);
void sound_recstop(void);
#endif

#ifdef __cplusplus
}
#endif



// ---- PCM MIX

enum {
        PMIXFLAG_L              = 0x0001,
        PMIXFLAG_R              = 0x0002,
        PMIXFLAG_LOOP   = 0x0004
};

typedef struct {
        UINT32  playing;
        UINT32  enable;
} PMIXHDR;

typedef struct {
        SINT16  *sample;
        UINT    samples;
} PMIXDAT;

typedef struct {
const SINT16    *pcm;
        UINT            remain;
        PMIXDAT         data;
        UINT            flag;
        SINT32          volume;
} PMIXTRK;

typedef struct {
        PMIXHDR         hdr;
        PMIXTRK         trk[1];
} _PCMMIX, *PCMMIX;


#ifdef __cplusplus
extern "C" {
#endif

BRESULT pcmmix_regist(PMIXDAT *dat, void *datptr, UINT datsize, UINT rate);
BRESULT pcmmix_regfile(PMIXDAT *dat, const OEMCHAR *fname, UINT rate);

void SOUNDCALL pcmmix_getpcm(PCMMIX hdl, SINT32 *pcm, UINT count);

#ifdef __cplusplus
}
#endif

#else

#define sound_pcmlock()         (NULL)
#define sound_pcmunlock(h)
#define sound_reset()
#define sound_changeclock()
#define sound_sync()

#endif