public void ReceiveTransportPlayingDuringUpdate(bool transportPlaying)
{
Debug.Assert(this.CurrentlyUpdating == true);
this.UpdatedFieldsInLastUpdate |= HostInfoFields.TransportPlaying;
if (this.TransportPlayingIsInitialized == false ||
this.TransportPlaying != transportPlaying)
{
this.ChangedFieldsInLastUpdate |= HostInfoFields.TransportPlaying;
this.TransportPlaying = transportPlaying;
this.TransportPlayingIsInitialized = true;
}
}
/// <summary>
/// This function must be called before any information is recieved through the
/// Receive...DuringUpdate() functions.
/// </summary>
public void StartUpdate()
{
Debug.Assert(this.CurrentlyUpdating == false);
CurrentlyUpdating = true;
this.UpdatedFieldsInLastUpdate = HostInfoFields.None;
this.ChangedFieldsInLastUpdate = HostInfoFields.None;
}
public void ReceiveTimeSignatureDuringUpdate(int numerator, int denominator)
{
Debug.Assert(this.CurrentlyUpdating == true);
this.UpdatedFieldsInLastUpdate |= HostInfoFields.TimeSignature;
if (this.TimeSignatureIsInitialized == false ||
this.TimeSignatureNumerator != numerator ||
this.TimeSignatureDenominator != denominator)
{
this.ChangedFieldsInLastUpdate |= HostInfoFields.TimeSignature;
this.TimeSignatureNumerator = numerator;
this.TimeSignatureDenominator = denominator;
this.TimeSignatureIsInitialized = true;
}
}
public void ReceiveTempoDuringUpdate(double tempo)
{
Debug.Assert(this.CurrentlyUpdating == true);
this.UpdatedFieldsInLastUpdate |= HostInfoFields.Tempo;
if (this.TempoIsInitialized == false || this.Tempo != tempo)
{
this.ChangedFieldsInLastUpdate |= HostInfoFields.Tempo;
this.Tempo = tempo;
this.TempoIsInitialized = true;
}
}
public void ReceiveSampleRateDuringUpdate(double sampleRate)
{
Debug.Assert(this.CurrentlyUpdating == true);
this.UpdatedFieldsInLastUpdate |= HostInfoFields.SampleRate;
if (this.SampleRateIsInitialized == false || this.SampleRate != sampleRate)
{
this.ChangedFieldsInLastUpdate |= HostInfoFields.SampleRate;
this.SampleRate = sampleRate;
this.SampleRateIsInitialized = true;
}
}
public void ReceiveBarPositionDuringUpdate(double barPos, long sampleTime)
{
Debug.Assert(this.CurrentlyUpdating == true);
this.UpdatedFieldsInLastUpdate |= HostInfoFields.BarPos;
if (this.BarPosIsInitialized == false ||
this.barPosOnLastUpdate != barPos || this.sampleTimeAtLastUpdate != sampleTime)
{
this.ChangedFieldsInLastUpdate |= HostInfoFields.BarPos;
this.barPosOnLastUpdate = barPos;
this.sampleTimeAtLastUpdate = sampleTime;
this.BarPosIsInitialized = true;
}
}
/// <summary>
/// Triggers events for subscribers to this relay's output port which will notify them of
/// changes made to the information in this relay. This function should be called after a
/// subscriber to this relay's input port is done sending information.
/// </summary>
public void FinishUpdate()
{
Debug.Assert(this.CurrentlyUpdating == true);
//Finish any updates that are dependant on multiple fields.
if (this.TempoIsInitialized == true &&
this.TimeSignatureIsInitialized == true &&
this.BarPosIsInitialized == true &&
this.SampleRateIsInitialized == true)
{
//If anything has changed that could have changed the position of the calculated
//bar 0 then it will be updated (as will this.samplesPerBar).
if (this.ChangedFieldsInLastUpdate.HasFlag(HostInfoFields.Tempo) ||
this.ChangedFieldsInLastUpdate.HasFlag(HostInfoFields.TimeSignature) ||
this.ChangedFieldsInLastUpdate.HasFlag(HostInfoFields.BarPos) ||
this.ChangedFieldsInLastUpdate.HasFlag(HostInfoFields.SampleRate))
{
double timeSig = (double)this.TimeSignatureNumerator / this.TimeSignatureDenominator;
double beatsPerBar = timeSig / (1 / 4d);
this.samplesPerBar = (beatsPerBar / this.Tempo) * (this.SampleRate * 60);
long newCalculatedBarZeroSampleTime = this.sampleTimeAtLastUpdate -
(long)System.Math.Round(this.barPosOnLastUpdate * samplesPerBar);
if (this.CalculatedBarZeroSampleTime != newCalculatedBarZeroSampleTime)
{
this.CalculatedBarZeroSampleTime = newCalculatedBarZeroSampleTime;
this.ChangedFieldsInLastUpdate |= HostInfoFields.CalculatedBarZero;
}
this.UpdatedFieldsInLastUpdate |= HostInfoFields.CalculatedBarZero;
this.CalculatedBarZeroIsInitialized = true;
}
}
CurrentlyUpdating = false;
//Send Events
if (this.HostUpdateFinished != null)
{
HostUpdateFinished(this.ChangedFieldsInLastUpdate);
}
if (this.ChangedFieldsInLastUpdate.HasFlag(HostInfoFields.SampleRate) &&
SampleRateChanged != null)
{
SampleRateChanged(this.SampleRate);
}
if (this.ChangedFieldsInLastUpdate.HasFlag(HostInfoFields.Tempo) &&
TempoChanged != null)
{
TempoChanged(this.Tempo);
}
if (this.ChangedFieldsInLastUpdate.HasFlag(HostInfoFields.TimeSignature) &&
TimeSignatureChanged != null)
{
TimeSignatureChanged(this.TimeSignatureNumerator, this.TimeSignatureDenominator);
}
if (this.ChangedFieldsInLastUpdate.HasFlag(HostInfoFields.TransportPlaying) &&
TransportPlayingChanged != null)
{
TransportPlayingChanged(this.TransportPlaying);
}
if (this.ChangedFieldsInLastUpdate.HasFlag(HostInfoFields.CalculatedBarZero) &&
CalculatedBarZeroChanged != null)
{
CalculatedBarZeroChanged(this.CalculatedBarZeroSampleTime);
}
}