private void TimerTick(EngineContext context)
{
if (!_eventTimer.Enabled || _isStopping) {
return;
}
context.TickCount = (context.SoundChannel != null) && context.SoundChannel.IsPlaying
? (int) context.SoundChannel.Position : context.StartOffset + ((int) context.Timekeeper.ElapsedMilliseconds);
var num = context.TickCount / context.CurrentSequence.EventPeriod;
if ((context.TickCount >= context.SequenceTickLength) || (num >= context.MaxEvent)) {
_fmod.Stop(context.SoundChannel);
context.Timekeeper.Stop();
context.Timekeeper.Reset();
if (IsLooping) {
LogAudio(_engineContext.CurrentSequence);
StartContextAudio(_engineContext);
context.Timekeeper.Start();
OnSequenceChange();
}
else {
Host.Invoke(new MethodInvoker(Stop));
}
}
else if (num != context.LastIndex) {
context.LastIndex = num;
FireEvent(context, context.LastIndex);
}
}
private void StartAudio(EngineContext context)
{
if (((Mode != EngineMode.Asynchronous) && (context.SoundChannel != null)) && context.SoundChannel.Paused) {
context.SoundChannel.Paused = false;
}
}
private void StartContextAudio(EngineContext context)
{
if (context.CurrentSequence.Audio == null) {
return;
}
if (Host.InvokeRequired) {
MethodInvoker method = delegate {
PrepareAudio(context, context.StartOffset);
StartAudio(context);
};
Host.Invoke(method);
}
else {
PrepareAudio(context, context.StartOffset);
StartAudio(context);
}
}
private void PrepareAudio(EngineContext context, int millisecondPosition)
{
if (((Mode == EngineMode.Asynchronous) || (context.SoundChannel == null)) || (millisecondPosition == -1)) {
return;
}
_fmod.Play(context.SoundChannel, true);
context.SoundChannel.Position = (uint) millisecondPosition;
context.SoundChannel.Frequency = AudioSpeed;
}
private void InitEngineContext(ref EngineContext context, int sequenceIndex)
{
if (context == null) {
return;
}
context.Timekeeper.Stop();
if (Host.InvokeRequired) {
Host.Invoke(new InitEngineContextDelegate(InitEngineContext), context, sequenceIndex);
}
else if ((sequenceIndex == -1) || (CurrentObject.EventSequences.Count <= sequenceIndex)) {
FinalizeEngineContext(context);
}
else {
var executableObject = CurrentObject.EventSequences[sequenceIndex].Sequence;
if (context.RouterContext == null) {
context.RouterContext = _plugInRouter.CreateContext(new byte[executableObject.FullChannelCount],
_useSequencePluginData ? executableObject.PlugInData : CurrentObject.SetupData,
executableObject);
}
if (CurrentObject.Mask.Length > sequenceIndex) {
context.ChannelMask = CurrentObject.Mask[sequenceIndex];
}
context.TickCount = 0;
context.LastIndex = -1;
context.SequenceTickLength = executableObject.Time;
context.StartOffset = 0;
context.SoundChannel = executableObject.Audio != null ? _fmod.LoadSound(Path.Combine(Paths.AudioPath, executableObject.Audio.FileName), context.SoundChannel) : _fmod.LoadSound(null);
context.CurrentSequence = executableObject;
context.MaxEvent = context.CurrentSequence.TotalEventPeriods;
context.LastPeriod = new byte[context.CurrentSequence.FullChannels.Count];
for (var i = 0; i < context.LastPeriod.Length; i++) {
context.LastPeriod[i] = (byte) i;
}
context.Data = ReconfigureSourceData(executableObject);
}
}
private void FireEvent(EngineContext context, int index)
{
if ((!context.Timekeeper.IsRunning || !_eventTimer.Enabled) || _isStopping) {
return;
}
for (var i = 0; i < context.CurrentSequence.FullChannels.Count; i++) {
context.RouterContext.EngineBuffer[i] = context.Data[i, index];
}
HardwareUpdate(context.RouterContext.EngineBuffer);
}
private void FinalizeEngineContext(EngineContext context, bool shutdownRouterContext = true)
{
if (context == null) {
return;
}
if (shutdownRouterContext && (context.RouterContext != null)) {
_plugInRouter.Shutdown(context.RouterContext);
context.RouterContext = null;
}
if (context.SoundChannel != null) {
_fmod.ReleaseSound(context.SoundChannel);
context.SoundChannel = null;
}
if (!context.Timekeeper.IsRunning) {
return;
}
context.Timekeeper.Stop();
context.Timekeeper.Reset();
}
private void ConstructUsing(EngineMode mode, Host host, int audioDeviceIndex)
{
Mode = mode;
_host = host;
_plugInRouter = Host.Router;
if (mode == EngineMode.Synchronous) {
_eventTimer = new Timer(1.0);
_eventTimer.Elapsed += EventTimerElapsed;
_fmod = fmod.GetInstance(audioDeviceIndex);
}
else {
_eventTimer = null;
_fmod = null;
}
_engineContext = new EngineContext();
InstanceList.Add(this);
}
