static STREAM_UPDATE( s14001a_pcm_update )
{
INT32 mix[48000];
//INT32 *mixp;
S14001AChip *chip = (S14001AChip *)param;
int i;
memset(mix, 0, sizeof(mix));
//mixp = &mix[0];
for (i = 0; i < samples; i++)
{
s14001a_clock(chip);
#ifdef ACCURATE_SQUEAL
if (chip->audioout == ALTFLAG) // input from test pins -> output
{
shiftIntoFilter(chip, audiofilter(chip)); // shift over the previous outputs and stick in audioout.
outputs[0][i] = audiofilter(chip)*chip->VSU1000_amp;
}
else // normal, dac-driven output
{
shiftIntoFilter(chip, ((((INT16)chip->audioout)-8)<<9)); // shift over the previous outputs and stick in audioout 4 times. note <<9 instead of <<10, to prevent clipping, and to simulate that the filtered output normally has a somewhat lower amplitude than the driven one.
#endif
outputs[0][i] = ((((INT16)chip->audioout)-8)<<10)*chip->VSU1000_amp;
#ifdef ACCURATE_SQUEAL
}
#endif
}
}
static void s14001a_update(int ch, INT16 *buffer, int length)
{
int i;
for (i = 0; i < length; i++)
{
if (--VSU1000_counter <= 0) {
s14001a_clock();
VSU1000_counter = VSU1000_freq;
}
#ifdef PINMAME
buffer[i] = ((((INT16)audioout)-128)*36)*((21 + 2 * VSU1000_amp) / 5);
#else
buffer[i] = ((((INT16)audioout)-128)*36)*VSU1000_amp;
#endif
}
}
void s14001a_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
{
int i;
for (i = 0; i < samples; i++)
{
s14001a_clock();
#ifdef ACCURATE_SQUEAL
if (m_audioout == ALTFLAG) // input from test pins -> output
{
shiftIntoFilter(chip, audiofilter(chip)); // shift over the previous outputs and stick in audioout.
outputs[0][i] = audiofilter(chip)*m_VSU1000_amp;
}
else // normal, dac-driven output
{
shiftIntoFilter(chip, ((((INT16)m_audioout)-8)<<9)); // shift over the previous outputs and stick in audioout 4 times. note <<9 instead of <<10, to prevent clipping, and to simulate that the filtered output normally has a somewhat lower amplitude than the driven one.
#endif
outputs[0][i] = ((((INT16)m_audioout)-8)<<10)*m_VSU1000_amp;
#ifdef ACCURATE_SQUEAL
}
#endif
}
}
