const int SAMPLE_BUF_SIZE = 0x138 * 2; // Size of buffer for sampled voice (double buffered)
#endregion
#region Public methods
public DigitalRenderer()
{
for (int i = 0; i < voice.Length; i++)
{
voice[i] = new DRVoice();
}
// Link voices together
voice[0].mod_by = voice[2];
voice[1].mod_by = voice[0];
voice[2].mod_by = voice[1];
voice[0].mod_to = voice[1];
voice[1].mod_to = voice[2];
voice[2].mod_to = voice[0];
// Calculate triangle table
for (int i = 0; i < 0x1000; i++)
{
TriTable[i] = (UInt16)((i << 4) | (i >> 8));
TriTable[0x1fff - i] = (UInt16)((i << 4) | (i >> 8));
}
#if PRECOMPUTE_RESONANCE
#if USE_FIXPOINT_MATHS
// slow floating point doesn't matter much on startup!
for (int i = 0; i < 256; i++)
{
resonanceLP[i] = FixPoint.FixNo((227.755 - 1.7635 * i - 0.0176385 * i * i + 0.00333484 * i * i * i - 9.05683E-6 * i * i * i * i));
resonanceHP[i] = FixPoint.FixNo((366.374 - 14.0052 * i + 0.603212 * i * i - 0.000880196 * i * i * i));
}
// Pre-compute the quotient. No problem since int-part is small enough
sidquot = (Int32)((((double)SID_FREQ) * 65536) / SAMPLE_FREQ);
// compute lookup table for Math.Sin and Math.Cos
FixPoint.InitFixSinTab();
#else
for (int i = 0; i < 256; i++)
{
resonanceLP[i] = (227.755 - 1.7635 * i - 0.0176385 * i * i + 0.00333484 * i * i * i - 9.05683E-6 * i * i * i * i);
resonanceHP[i] = (366.374 - 14.0052 * i + 0.603212 * i * i - 0.000880196 * i * i * i);
}
#endif
#endif
Reset();
// System specific initialization
init_sound();
}
