public static void MainLoop <U>(
AudioFilePlayGeneratorParams <T, W> generatorParams,
Synthesizer.DataOutCallbackMethod <OutputGeneric <T, U, W> > dataCallback,
OutputGeneric <T, U, W> dataCallbackState,
Synthesizer.StopTask stopper)
{
try
{
const int NUMPOINTS = 256;
float[] buffer = new float[NUMPOINTS];
float[] buffer2 = new float[NUMPOINTS * 2];
int c;
while ((c = generatorParams.reader.ReadPoints(buffer, 0, buffer.Length)) != 0)
{
if (stopper.Stopped)
{
break;
}
if (generatorParams.reader.NumChannels == NumChannelsType.eSampleStereo)
{
dataCallback(
dataCallbackState,
buffer,
0,
c / 2);
}
else
{
for (int i = 0; i < c; i++)
{
buffer2[2 * i + 0] = buffer[i];
buffer2[2 * i + 1] = buffer[i];
}
dataCallback(
dataCallbackState,
buffer2,
0,
c);
}
}
}
catch (Exception exception)
{
generatorParams.exception = exception;
stopper.Stop();
}
}
public static void SynthesizerMainLoop <U>(
SynthesizerGeneratorParams <T, W> generatorParams,
Synthesizer.DataOutCallbackMethod <OutputGeneric <T, U, W> > dataCallback,
OutputGeneric <T, U, W> dataCallbackState,
Synthesizer.StopTask stopper)
{
try
{
generatorParams.result = Synthesizer.DoSynthesizer(
generatorParams.document,
dataCallback,
dataCallbackState,
generatorParams.listOfTracks,
generatorParams.keyTrack,
generatorParams.frameToStartAt,
generatorParams.samplingRate * generatorParams.oversamplingFactor,
generatorParams.oversamplingFactor,
generatorParams.envelopeRate,
generatorParams.defaultBeatsPerMinute,
generatorParams.overallVolumeScalingReciprocal,
generatorParams.scanningGap,
stopper,
generatorParams.showSummary,
out generatorParams.errorInfo,
generatorParams.interactionLog,
generatorParams.deterministic,
generatorParams.randomSeed,
generatorParams.automationSettings);
}
catch (Exception exception)
{
Program.WriteLog("SynthesizerMainLoop", exception.ToString());
generatorParams.exception = exception;
stopper.Stop();
}
finally
{
generatorParams.completed = true;
}
}
public static void MainLoop<U>(
WaveTableTestGeneratorParams<T, W> generatorParams,
Synthesizer.DataOutCallbackMethod<OutputGeneric<T, U, W>> dataCallback,
OutputGeneric<T, U, W> dataCallbackState,
Synthesizer.StopTask stopper)
{
try
{
// Unoptimized - since only one runs at a time this codepath is not perf critical (unlike the
// resampler loops in the synth engine)
int NumTables = generatorParams.data.NumTables;
float[][] ReferenceArray = new float[NumTables][];
for (int i = 0; i < NumTables; i++)
{
ReferenceArray[i] = generatorParams.data.ListOfTables[i].frames;
}
int PlaybackSamplingRate = generatorParams.samplingRate;
if (PlaybackSamplingRate < Constants.MINSAMPLINGRATE)
{
PlaybackSamplingRate = Constants.MINSAMPLINGRATE;
}
if (PlaybackSamplingRate > Constants.MAXSAMPLINGRATE)
{
PlaybackSamplingRate = Constants.MAXSAMPLINGRATE;
}
int FramesPerTable = generatorParams.data.NumFrames;
/* this is the initial index into the wave table */
Synthesizer.Fixed64 WaveformIndex = new Synthesizer.Fixed64();
/* this is the 16.16 bit fixed point number used to increment the index */
/* into the wave table */
Synthesizer.Fixed64 WaveformIncrementor = new Synthesizer.Fixed64(
FramesPerTable * generatorParams.frequency / PlaybackSamplingRate);
/* the number of times each wave slice has to be used */
int NumberOfIterationsAttack = (int)(generatorParams.attack * PlaybackSamplingRate);
int NumberOfIterationsDecay = (int)(generatorParams.decay * PlaybackSamplingRate);
const int SOUNDBUFFERLENGTHFRAMES = 256;
float[] OutputBuffer = new float[SOUNDBUFFERLENGTHFRAMES * 2];
int OutputIndex = 0;
for (int i = 0; i < NumberOfIterationsAttack + NumberOfIterationsDecay; i++)
{
/* compute wave table index for attack/decay phase */
double TableIndex;
if (i < NumberOfIterationsAttack)
{
TableIndex = (double)i / NumberOfIterationsAttack;
}
else
{
TableIndex = (double)(NumberOfIterationsDecay + NumberOfIterationsAttack - i) / NumberOfIterationsDecay;
}
float Value = Synthesizer.WaveTableIndexer(
WaveformIndex.Double,
TableIndex * (NumTables - 1),
NumTables,
FramesPerTable,
ReferenceArray,
true/*EnableCrossWaveTableInterpolation*/);
WaveformIndex += WaveformIncrementor;
OutputBuffer[2 * OutputIndex + 0] = OutputBuffer[2 * OutputIndex + 1] = Value * .5f;
OutputIndex++;
if (OutputIndex == SOUNDBUFFERLENGTHFRAMES)
{
dataCallback(
dataCallbackState,
OutputBuffer,
0,
SOUNDBUFFERLENGTHFRAMES);
OutputIndex = 0;
if (stopper.Stopped)
{
return;
}
}
}
dataCallback(
dataCallbackState,
OutputBuffer,
0,
OutputIndex);
}
catch (Exception exception)
{
generatorParams.exception = exception;
stopper.Stop();
}
}
public static void MainLoop <U>(
PlayFileWithEffectsGeneratorParams <T, W> generatorParams,
Synthesizer.DataOutCallbackMethod <OutputGeneric <T, U, W> > dataCallback,
OutputGeneric <T, U, W> dataCallbackState,
Synthesizer.StopTask stopper)
{
try
{
generatorParams.result = Synthesizer.SynthStateRec.InitializeSynthesizer(
out generatorParams.synthState,
generatorParams.mainWindow.Document,
new List <TrackObjectRec>(),
null,
0 /*FrameToStartAt*/,
generatorParams.reader.SamplingRate,
1 /*Oversampling*/,
generatorParams.mainWindow.Document.EnvelopeUpdateRate,
(LargeBCDType)generatorParams.mainWindow.Document.DefaultBeatsPerMinute,
1 /*OverallVolumeScalingReciprocal*/,
(LargeBCDType)0d /*ScanningGap*/,
out generatorParams.errorInfo,
TextWriter.Synchronized(generatorParams.interactionLog),
generatorParams.mainWindow.Document.Deterministic,
generatorParams.mainWindow.Document.Seed,
new Synthesizer.AutomationSettings());
if (generatorParams.result != Synthesizer.SynthErrorCodes.eSynthDone)
{
return;
}
// HACK!
generatorParams.result = Synthesizer.NewTrackEffectGenerator(
generatorParams.effectSpec,
generatorParams.synthState.SynthParams0,
out generatorParams.synthState.ScoreEffectProcessor);
if (generatorParams.result != Synthesizer.SynthErrorCodes.eSynthDone)
{
return;
}
while (!stopper.Stopped)
{
// TODO: shouldn't ask for nAllocatedPointsOneChannel, that's slightly inaccurate. Should
// use the clock logic in SynthGenerateOneCycle -- see e.g. nActualFrames
int c;
if (generatorParams.reader.NumChannels == NumChannelsType.eSampleMono)
{
c = generatorParams.reader.ReadPoints(
generatorParams.synthState.SynthParams0.workspace,
generatorParams.synthState.SynthParams0.ScoreWorkspaceLOffset,
generatorParams.synthState.SynthParams0.nAllocatedPointsOneChannel);
Synthesizer.FloatVectorCopy(
generatorParams.synthState.SynthParams0.workspace,
generatorParams.synthState.SynthParams0.ScoreWorkspaceLOffset,
generatorParams.synthState.SynthParams0.workspace,
generatorParams.synthState.SynthParams0.ScoreWorkspaceROffset,
c);
}
else
{
c = generatorParams.reader.ReadPoints(
generatorParams.synthState.SynthParams0.workspace,
generatorParams.synthState.SynthParams0.SectionWorkspaceLOffset,
generatorParams.synthState.SynthParams0.nAllocatedPointsOneChannel * 2);
c /= 2;
Synthesizer.FloatVectorMakeUninterleaved(
generatorParams.synthState.SynthParams0.workspace,
generatorParams.synthState.SynthParams0.SectionWorkspaceLOffset,
generatorParams.synthState.SynthParams0.workspace,
generatorParams.synthState.SynthParams0.ScoreWorkspaceLOffset,
generatorParams.synthState.SynthParams0.workspace,
generatorParams.synthState.SynthParams0.ScoreWorkspaceROffset,
c);
}
if (c == 0)
{
break;
}
// HACK!
// Should create specialized version of Synthesizer.SynthGenerateOneCycle that does this
Synthesizer.UpdateStateTrackEffectGenerator(
generatorParams.synthState.ScoreEffectProcessor,
generatorParams.synthState.SynthParams0);
Synthesizer.ApplyTrackEffectGenerator(
generatorParams.synthState.ScoreEffectProcessor,
generatorParams.synthState.SynthParams0.workspace,
c,
generatorParams.synthState.SynthParams0.ScoreWorkspaceLOffset,
generatorParams.synthState.SynthParams0.ScoreWorkspaceROffset,
generatorParams.synthState.SynthParams0);
Synthesizer.FloatVectorMakeInterleaved(
generatorParams.synthState.SynthParams0.workspace,
generatorParams.synthState.SynthParams0.ScoreWorkspaceLOffset,
generatorParams.synthState.SynthParams0.workspace,
generatorParams.synthState.SynthParams0.ScoreWorkspaceROffset,
c,
generatorParams.synthState.SynthParams0.workspace,
generatorParams.synthState.SynthParams0.SectionWorkspaceLOffset);
dataCallback(
dataCallbackState,
generatorParams.synthState.SynthParams0.workspace,
generatorParams.synthState.SynthParams0.SectionWorkspaceLOffset,
c);
}
}
catch (Exception exception)
{
generatorParams.exception = exception;
stopper.Stop();
}
}
