static void *ym3812_start(int sndindex, int clock, const void *config)
{
static const struct YM3812interface dummy = { 0 };
int rate = Machine->sample_rate;
struct ym3812_info *info;
info = auto_malloc(sizeof(*info));
memset(info, 0, sizeof(*info));
info->intf = config ? config : &dummy;
rate = clock/72;
/* stream system initialize */
info->chip = YM3812Init(sndindex,clock,rate);
if (!info->chip)
return NULL;
info->stream = stream_create(0,1,rate,info,ym3812_stream_update);
/* YM3812 setup */
YM3812SetTimerHandler (info->chip, TimerHandler_3812, info);
YM3812SetIRQHandler (info->chip, IRQHandler_3812, info);
YM3812SetUpdateHandler(info->chip, _stream_update_3812, info);
info->timer[0] = timer_alloc_ptr(timer_callback_3812_0, info);
info->timer[1] = timer_alloc_ptr(timer_callback_3812_1, info);
return info;
}
int YM3812_sh_start(const struct MachineSound *msound)
{
int i;
int rate = Machine->sample_rate;
intf_3812 = msound->sound_interface;
if( intf_3812->num > MAX_3812 ) return 1;
if (options.use_filter)
rate = intf_3812->baseclock/72;
/* Timer state clear */
memset(Timer_3812,0,sizeof(Timer_3812));
/* stream system initialize */
if ( YM3812Init(intf_3812->num,intf_3812->baseclock,rate) != 0)
return 1;
for (i = 0;i < intf_3812->num;i++)
{
/* stream setup */
char name[40];
int vol = intf_3812->mixing_level[i];
/* emulator create */
/* stream setup */
sprintf(name,"%s #%d",sound_name(msound),i);
stream_3812[i] = stream_init(name,vol,rate,i,YM3812UpdateOne);
/* YM3812 setup */
YM3812SetTimerHandler (i, TimerHandler_3812, i*2);
YM3812SetIRQHandler (i, IRQHandler_3812, i);
YM3812SetUpdateHandler(i, stream_update, stream_3812[i]);
Timer_3812[i*2+0] = timer_alloc(timer_callback_3812);
Timer_3812[i*2+1] = timer_alloc(timer_callback_3812);
}
return 0;
}
