protected override void UpdateAfter()
{
foreach (var entry in _psgEntries)
{
entry.WasActive = entry.Active;
entry.Active = false;
}
bool sync = false;
lvPsgWaveforms.BeginUpdate();
lvChannels.BeginUpdate();
for (int i = 0; i < 6; i++)
{
var ch = PCE.PSG.Channels[i];
// these conditions mean a sample isn't playing
if (!ch.Enabled)
{
lvChannels.Items[i].SubItems[1].Text = "-";
lvChannels.Items[i].SubItems[2].Text = "-";
lvChannels.Items[i].SubItems[3].Text = "(disabled)";
_lastSamples[i] = null;
continue;
}
if (ch.DDA)
{
lvChannels.Items[i].SubItems[1].Text = "-";
lvChannels.Items[i].SubItems[2].Text = "-";
lvChannels.Items[i].SubItems[3].Text = "(DDA)";
_lastSamples[i] = null;
continue;
}
lvChannels.Items[i].SubItems[1].Text = ch.Volume.ToString();
lvChannels.Items[i].SubItems[2].Text = ch.Frequency.ToString();
if (ch.NoiseChannel)
{
lvChannels.Items[i].SubItems[3].Text = "(noise)";
_lastSamples[i] = null;
continue;
}
if (ch.Volume == 0)
{
_lastSamples[i] = null;
continue;
}
lvChannels.Items[i].SubItems[3].Text = "-";
// ok, a sample is playing. copy out the waveform
short[] waveform = (short[])ch.Wave.Clone();
// hash it
var ms = new MemoryStream(_waveformTemp);
var bw = new BinaryWriter(ms);
foreach (var s in waveform)
{
bw.Write(s);
}
bw.Flush();
var md5 = MD5Checksum.ComputeDigestHex(_waveformTemp);
if (!_psgEntryTable.TryGetValue(md5, out var entry))
{
entry = new PsgEntry
{
Name = md5,
WaveForm = waveform,
Active = true,
HitCount = 1,
Index = _psgEntries.Count
};
_psgEntries.Add(entry);
_psgEntryTable[md5] = entry;
sync = true;
_lastSamples[i] = entry;
}
else
{
entry.Active = true;
// are we playing the same sample as before?
if (_lastSamples[i] != entry)
{
_lastSamples[i] = entry;
entry.HitCount++;
if (entry.Index < lvPsgWaveforms.Items.Count)
{
lvPsgWaveforms.Items[entry.Index].SubItems[1].Text = entry.HitCount.ToString();
}
else
{
sync = true;
}
}
}
lvChannels.Items[i].SubItems[3].Text = entry.Name;
}
if (sync)
{
SyncLists();
}
lvPsgWaveforms.EndUpdate();
lvChannels.EndUpdate();
}