unsafe void PlayerThread(object o)
{
var lastNoteWasRelease = false;
var lastReleaseTime = DateTime.Now;
var activeChannel = -1;
var waitEvents = new WaitHandle[] { stopEvent, frameEvent };
NesApu.InitAndReset(apuIndex, sampleRate, palMode, expansionAudio, numExpansionChannels, dmcCallback);
for (int i = 0; i < channelStates.Length; i++)
{
NesApu.EnableChannel(apuIndex, i, 0);
}
while (true)
{
int idx = WaitHandle.WaitAny(waitEvents);
if (idx == 0)
{
break;
}
if (!noteQueue.IsEmpty)
{
PlayerNote lastNote = new PlayerNote();
while (noteQueue.TryDequeue(out PlayerNote note))
{
lastNote = note;
}
activeChannel = lastNote.channel;
if (activeChannel >= 0)
{
channelStates[activeChannel].PlayNote(lastNote.note);
if (lastNote.note.IsRelease)
{
lastNoteWasRelease = true;
lastReleaseTime = DateTime.Now;
}
else
{
lastNoteWasRelease = false;
}
}
for (int i = 0; i < channelStates.Length; i++)
{
NesApu.EnableChannel(apuIndex, i, i == activeChannel ? 1 : 0);
}
}
if (lastNoteWasRelease &&
activeChannel >= 0 &&
Settings.InstrumentStopTime >= 0 &&
DateTime.Now.Subtract(lastReleaseTime).TotalSeconds >= Settings.InstrumentStopTime)
{
NesApu.EnableChannel(apuIndex, activeChannel, 0);
activeChannel = -1;
}
if (activeChannel >= 0)
{
channelStates[activeChannel].UpdateEnvelopes();
channelStates[activeChannel].UpdateAPU();
for (int i = 0; i < Envelope.Count; i++)
{
envelopeFrames[i] = channelStates[activeChannel].GetEnvelopeFrame(i);
}
}
else
{
for (int i = 0; i < Envelope.Count; i++)
{
envelopeFrames[i] = 0;
}
foreach (var channel in channelStates)
{
channel.ClearNote();
}
}
EndFrame();
}
audioStream.Stop();
while (sampleQueue.TryDequeue(out _))
{
;
}
}
unsafe void PlayerThread(object o)
{
var startInfo = (SongPlayerStartInfo)o;
var song = startInfo.song;
var channels = PlayerBase.CreateChannelStates(song.Project, apuIndex);
var advance = true;
var tempoCounter = 0;
var playPattern = 0;
var playNote = 0;
var jumpPattern = -1;
var jumpNote = -1;
var speed = song.Speed;
playPosition = startInfo.frame;
NesApu.InitAndReset(apuIndex, SampleRate, GetNesApuExpansionAudio(song.Project), dmcCallback);
if (startInfo.frame != 0)
{
NesApu.StartSeeking(apuIndex);
#if DEBUG
NesApu.seeking = true;
#endif
while (playPattern * song.PatternLength + playNote < startInfo.frame)
{
var dummyAdvance = false;
if (!AdvanceTempo(song, speed, LoopMode.None, ref tempoCounter, ref playPattern, ref playNote, ref jumpPattern, ref jumpNote, ref dummyAdvance))
{
break;
}
foreach (var channel in channels)
{
channel.Advance(song, playPattern, playNote);
channel.ProcessEffects(song, playPattern, playNote, ref jumpPattern, ref jumpNote, ref speed);
channel.UpdateEnvelopes();
channel.UpdateAPU();
}
}
NesApu.StopSeeking(apuIndex);
#if DEBUG
NesApu.seeking = false;
#endif
jumpPattern = -1;
jumpNote = -1;
}
var waitEvents = new WaitHandle[] { stopEvent, frameEvent };
while (true)
{
int idx = WaitHandle.WaitAny(waitEvents);
if (idx == 0)
{
break;
}
// !advance is to handle first frame.
if (!advance && !AdvanceTempo(song, speed, loopMode, ref tempoCounter, ref playPattern, ref playNote, ref jumpPattern, ref jumpNote, ref advance))
{
break;
}
// Advance to next note.
if (advance)
{
playPosition = playPattern * song.PatternLength + playNote;
foreach (var channel in channels)
{
channel.Advance(song, playPattern, playNote);
channel.ProcessEffects(song, playPattern, playNote, ref jumpPattern, ref jumpNote, ref speed);
}
advance = false;
}
// Update envelopes + APU registers.
foreach (var channel in channels)
{
channel.UpdateEnvelopes();
channel.UpdateAPU();
}
// Mute.
for (int i = 0; i < channels.Length; i++)
{
NesApu.EnableChannel(apuIndex, i, (channelMask & (1 << i)));
}
EndFrameAndQueueSamples();
}
audioStream.Stop();
while (sampleQueue.TryDequeue(out _))
{
;
}
}
