static void *ym2608_start(int sndindex, int clock, const void *config)
{
static const struct YM2608interface generic_2608 =
{
{
AY8910_LEGACY_OUTPUT | AY8910_SINGLE_OUTPUT,
AY8910_DEFAULT_LOADS,
NULL, NULL, NULL, NULL
},
NULL,
0,
};
const struct YM2608interface *intf = config ? config : &generic_2608;
int rate = clock/72;
void *pcmbufa;
int pcmsizea;
struct ym2608_info *info;
info = auto_malloc(sizeof(*info));
memset(info, 0, sizeof(*info));
info->intf = intf;
/* FIXME: Force to use simgle output */
info->psg = ay8910_start_ym(SOUND_YM2608, sndindex, clock, &intf->ay8910_intf);
if (!info->psg) return NULL;
/* Timer Handler set */
info->timer[0] = timer_alloc(timer_callback_2608_0, info);
info->timer[1] = timer_alloc(timer_callback_2608_1, info);
/* stream system initialize */
info->stream = stream_create(0,2,rate,info,ym2608_stream_update);
/* setup adpcm buffers */
pcmbufa = (void *)(memory_region(info->intf->pcmrom));
pcmsizea = memory_region_length(info->intf->pcmrom);
/* initialize YM2608 */
info->chip = YM2608Init(info,sndindex,clock,rate,
pcmbufa,pcmsizea,
timer_handler,IRQHandler,&psgintf);
state_save_register_postload(Machine, ym2608_postload, info);
if (info->chip)
return info;
/* error */
return NULL;
}
static void *ym2608_start(int sndindex, int clock, const void *config)
{
static const struct YM2608interface generic_2608 = { 0 };
const struct YM2608interface *intf = config ? config : &generic_2608;
int rate = Machine->sample_rate;
void *pcmbufa;
int pcmsizea;
struct ym2608_info *info;
info = auto_malloc(sizeof(*info));
memset(info, 0, sizeof(*info));
info->intf = intf;
info->psg = ay8910_start_ym(SOUND_YM2608, sndindex, clock, 1, intf->portAread, intf->portBread, intf->portAwrite, intf->portBwrite);
if (!info->psg) return NULL;
/* Timer Handler set */
info->timer[0] =timer_alloc_ptr(timer_callback_2608_0, info);
info->timer[1] =timer_alloc_ptr(timer_callback_2608_1, info);
/* stream system initialize */
info->stream = stream_create(0,2,rate,info,ym2608_stream_update);
/* setup adpcm buffers */
pcmbufa = (void *)(memory_region(info->intf->pcmrom));
pcmsizea = memory_region_length(info->intf->pcmrom);
/* initialize YM2608 */
info->chip = YM2608Init(info,sndindex,clock,rate,
pcmbufa,pcmsizea,
TimerHandler,IRQHandler,&psgintf);
state_save_register_func_postload_ptr(ym2608_postload, info);
if (info->chip)
return info;
/* error */
return NULL;
}
int YM2608_sh_start(const struct MachineSound *msound)
{
int i,j;
int rate = Machine->sample_rate;
char buf[YM2608_NUMBUF][40];
const char *name[YM2608_NUMBUF];
int mixed_vol,vol[YM2608_NUMBUF];
void *pcmbufa[YM2608_NUMBUF];
int pcmsizea[YM2608_NUMBUF];
int rhythm_pos[6+1];
struct GameSamples *psSamples;
int total_size,r_offset,s_size;
intf = (const struct YM2608interface *)msound->sound_interface;
if( intf->num > MAX_2608 ) return 1;
if (AY8910_sh_start(msound)) return 1;
/* Timer Handler set */
FMTimerInit();
/* stream system initialize */
for (i = 0;i < intf->num;i++)
{
/* stream setup */
mixed_vol = intf->volumeFM[i];
/* stream setup */
for (j = 0 ; j < YM2608_NUMBUF ; j++)
{
name[j]=buf[j];
vol[j] = mixed_vol & 0xffff;
mixed_vol>>=16;
sprintf(buf[j],"%s #%d Ch%d",sound_name(msound),i,j+1);
}
stream[i] = stream_init_multi(YM2608_NUMBUF,name,vol,rate,i,YM2608UpdateOne);
/* setup adpcm buffers */
pcmbufa[i] = (void *)(memory_region(intf->pcmrom[i]));
pcmsizea[i] = memory_region_length(intf->pcmrom[i]);
}
/* rythm rom build */
rhythm_buf = 0;
#ifdef YM2608_USE_SAMPLES
psSamples = readsamples(ym2608_pDrumNames,"ym2608");
#else
psSamples = 0;
#endif
if( psSamples )
{
/* calcrate total data size */
total_size = 0;
for( i=0;i<6;i++)
{
s_size = psSamples->sample[i]->length;
total_size += s_size ? s_size : 1;
}
/* aloocate rythm data */
rhythm_buf = (short int*)malloc(total_size * sizeof(signed short));
if( rhythm_buf==0 ) return 0;
r_offset = 0;
/* merge sampling data */
for(i=0;i<6;i++)
{
/* set start point */
rhythm_pos[i] = r_offset*2;
/* copy sample data */
s_size = psSamples->sample[i]->length;
if(s_size && psSamples->sample[i]->data)
{
if( psSamples->sample[i]->resolution==16 )
{
signed short *s_ptr = (signed short *)psSamples->sample[i]->data;
for(j=0;j<s_size;j++) rhythm_buf[r_offset++] = *s_ptr++;
}else{
signed char *s_ptr = (signed char *)psSamples->sample[i]->data;
for(j=0;j<s_size;j++) rhythm_buf[r_offset++] = (*s_ptr++)*0x0101;
}
}else rhythm_buf[r_offset++] = 0;
/* set end point */
rhythm_pos[i+1] = r_offset*2;
}
freesamples( psSamples );
}else
{
/* aloocate rythm data */
rhythm_buf = (short int*)malloc(6 * sizeof(signed short));
if( rhythm_buf==0 ) return 0;
for(i=0;i<6;i++)
{
/* set start point */
rhythm_pos[i] = i*2;
rhythm_buf[i] = 0;
/* set end point */
rhythm_pos[i+1] = (i+1)*2;
}
}
/**** initialize YM2608 ****/
if (YM2608Init(intf->num,intf->baseclock,rate,
pcmbufa,pcmsizea,rhythm_buf,rhythm_pos,
TimerHandler,IRQHandler) == 0)
return 0;
/* error */
return 1;
}
