public override int start(Mame.MachineSound msound)
{
OKIM6295interface intf = (OKIM6295interface)msound.sound_interface;
string stream_name;
int i;
/* reset the ADPCM system */
num_voices = (byte)(intf.num * MAX_OKIM6295_VOICES);
compute_tables();
sample_list = null;
/* initialize the voices */
for (i = 0; i < num_voices; i++)
{
int chip = i / MAX_OKIM6295_VOICES;
int voice = i % MAX_OKIM6295_VOICES;
/* reset the OKI-specific parameters */
okim6295_command[chip] = -1;
okim6295_base[chip][voice] = 0;
/* generate the name and create the stream */
stream_name = Mame.sprintf("%s #%d (voice %d)", Mame.sound_name(msound), chip, voice);
_adpcm[i].stream = Mame.stream_init(stream_name, intf.mixing_level[chip], Mame.Machine.sample_rate, i, adpcm_update);
if (_adpcm[i].stream == -1)
return 1;
/* initialize the rest of the structure */
_adpcm[i].region_base = Mame.memory_region(intf.region[chip]);
_adpcm[i].volume = 255;
_adpcm[i].signal = unchecked((uint)-2);
if (Mame.Machine.sample_rate != 0)
_adpcm[i].source_step = (uint)((double)intf.frequency[chip] * (double)FRAC_ONE / (double)Mame.Machine.sample_rate);
}
/* success */
return 0;
}
public override void stop()
{
sample_list = null;
throw new NotImplementedException();
}
public override int start(Mame.MachineSound msound)
{
ADPCMinterface intf = (ADPCMinterface)msound.sound_interface;
string stream_name;
/* reset the ADPCM system */
num_voices = (byte)intf.num;
compute_tables();
sample_list = null;
/* generate the sample table, if one is needed */
if (intf.init != null)
{
/* allocate memory for it */
sample_list = new ADPCMsample[257];
if (sample_list == null)
return 1;
for (int i = 0; i < 257; i++)
sample_list[i] = new ADPCMsample();
/* callback to initialize */
intf.init(intf, sample_list, 256);
}
/* initialize the voices */
//memset(adpcm, 0, sizeof(adpcm));
for (int i = 0; i < num_voices; i++)
{
/* generate the name and create the stream */
stream_name = Mame.sprintf("%s #%d", Mame.sound_name(msound), i);
adpcm[i].stream = Mame.stream_init(stream_name, intf.mixing_level[i], Mame.Machine.sample_rate, i, okim6295.adpcm_update);
if (adpcm[i].stream == -1)
return 1;
/* initialize the rest of the structure */
adpcm[i].region_base = Mame.memory_region(intf.region);
adpcm[i].volume = 255;
adpcm[i].signal = unchecked((uint)-2);
if (Mame.Machine.sample_rate != 0)
adpcm[i].source_step = (uint)((double)intf.frequency * (double)FRAC_ONE / (double)Mame.Machine.sample_rate);
}
/* success */
return 0;
}
