/* update control state for effects processors. this is called once per envelope */
/* tick, and constitutes the first half of the control-update cycle. */
/* returns true if successful, or false if it failed. */
public static SynthErrorCodes UpdateStateTrackEffectGenerator(
TrackEffectGenRec Generator,
SynthParamRec SynthParams)
{
if (Generator.List != null)
{
AccentRec Accents = new AccentRec();
InitializeAccent(
ref Accents,
Generator.Accents0.Current,
Generator.Accents1.Current,
Generator.Accents2.Current,
Generator.Accents3.Current,
Generator.Accents4.Current,
Generator.Accents5.Current,
Generator.Accents6.Current,
Generator.Accents7.Current);
OneEffectRec Scan = Generator.List;
while (Scan != null)
{
SynthErrorCodes error = Scan.u.TrackUpdateState(
ref Accents,
SynthParams);
if (error != SynthErrorCodes.eSynthDone)
{
return(error);
}
Scan = Scan.Next;
}
}
return(SynthErrorCodes.eSynthDone);
}
/* apply effects to data generated during this envelope clock cycle. this is the */
/* second half of the control-update cycle. */
public static SynthErrorCodes ApplyTrackEffectGenerator(
TrackEffectGenRec Generator,
float[] workspace,
int nActualFrames,
int lOffset,
int rOffset,
SynthParamRec SynthParams)
{
OneEffectRec Scan = Generator.List;
if (Scan != null)
{
/* auto-quiescence prepass -- if input exceeds level, then enable */
if (Generator.AutoQuiescence)
{
AutoQuiescenceDetector(
Generator,
workspace,
lOffset,
rOffset,
nActualFrames,
true /*examining input data*/);
}
if (Generator.Enable)
{
while (Scan != null)
{
SynthErrorCodes error = Scan.u.Apply(
workspace,
lOffset,
rOffset,
nActualFrames,
SynthParams);
if (error != SynthErrorCodes.eSynthDone)
{
return(error);
}
Scan = Scan.Next;
}
/* auto-quiescence postpass -- if effects were applied, then */
/* examine the output */
if (Generator.AutoQuiescence)
{
AutoQuiescenceDetector(
Generator,
workspace,
lOffset,
rOffset,
nActualFrames,
false /*examining output data*/);
}
}
}
return(SynthErrorCodes.eSynthDone);
}
/* finalize before termination */
public static void FinalizeTrackEffectGenerator(
TrackEffectGenRec Generator,
SynthParamRec SynthParams,
bool writeOutputLogs)
{
OneEffectRec Scan = Generator.List;
if (Scan != null)
{
if (Generator.Enable)
{
while (Scan != null)
{
Scan.u.Finalize(
SynthParams,
writeOutputLogs);
Scan = Scan.Next;
}
}
}
}
/* create a new track effect generator */
public static SynthErrorCodes NewTrackEffectGenerator(
EffectSpecListRec SpecList,
SynthParamRec SynthParams,
out TrackEffectGenRec GeneratorOut)
{
GeneratorOut = null;
TrackEffectGenRec Generator = new TrackEffectGenRec();
Generator.Enable = true;
Generator.AutoQuiescence = EffectSpecListIsAutoQuiescenceEnabled(SpecList);
if (Generator.AutoQuiescence)
{
Generator.Enable = false; /* start with it off in this case */
Generator.GateLevel = (float)(Math.Pow(
2,
EffectSpecListGetAutoQuiescenceDecibels(SpecList) * (1 / -6.0205999132796239))
/ SynthParams.fOverallVolumeScaling);
Generator.WindowDuration = (int)(SynthParams.dEnvelopeRate
* EffectSpecListGetAutoQuiescenceWindowDuration(SpecList));
Generator.CurrentWindowDuration = 0;
}
/* this is the current envelope update index for removing things from the */
/* scanning gap list (i.e. the back edge of the scanning gap) */
/* by setting this negative, we cause the scanning gap to open. */
Generator.ExecutionIndex = -SynthParams.iScanningGapWidthInEnvelopeTicks;
/* initialize accent trackers */
InitAccentTracker(ref Generator.Accents0);
InitAccentTracker(ref Generator.Accents1);
InitAccentTracker(ref Generator.Accents2);
InitAccentTracker(ref Generator.Accents3);
InitAccentTracker(ref Generator.Accents4);
InitAccentTracker(ref Generator.Accents5);
InitAccentTracker(ref Generator.Accents6);
InitAccentTracker(ref Generator.Accents7);
/* build list of thingers */
OneEffectRec Appender = null;
int l = GetEffectSpecListLength(SpecList);
for (int i = 0; i < l; i += 1)
{
/* see if effect is enabled */
if (IsEffectFromEffectSpecListEnabled(SpecList, i))
{
OneEffectRec Effect = new OneEffectRec();
/* link */
Effect.Next = null;
if (Appender == null)
{
Generator.List = Effect;
}
else
{
Appender.Next = Effect;
}
Appender = Effect;
/* fill in fields */
EffectTypes Type = GetEffectSpecListElementType(SpecList, i);
switch (Type)
{
default:
Debug.Assert(false);
throw new ArgumentException();
case EffectTypes.eDelayEffect:
Effect.u = DelayUnifiedRec.NewTrackDelayLineProcessor(
GetDelayEffectFromEffectSpecList(SpecList, i),
SynthParams);
break;
case EffectTypes.eNLProcEffect:
Effect.u = NLProcUnifiedRec.NewTrackNLProcProcessor(
GetNLProcEffectFromEffectSpecList(SpecList, i),
SynthParams);
break;
case EffectTypes.eFilterEffect:
Effect.u = FilterArrayRec.NewTrackFilterArrayProcessor(
GetFilterEffectFromEffectSpecList(SpecList, i),
SynthParams);
break;
case EffectTypes.eAnalyzerEffect:
Effect.u = AnalyzerRec.NewAnalyzer(
GetAnalyzerEffectFromEffectSpecList(SpecList, i),
SynthParams);
break;
case EffectTypes.eHistogramEffect:
Effect.u = HistogramRec.NewHistogram(
GetHistogramEffectFromEffectSpecList(SpecList, i),
SynthParams);
break;
case EffectTypes.eResamplerEffect:
Effect.u = ResamplerRec.NewResampler(
GetResamplerEffectFromEffectSpecList(SpecList, i),
SynthParams);
break;
case EffectTypes.eCompressorEffect:
Effect.u = CompressorRec.NewTrackCompressor(
GetCompressorEffectFromEffectSpecList(SpecList, i),
SynthParams);
break;
case EffectTypes.eVocoderEffect:
Effect.u = VocoderRec.NewTrackVocoder(
GetVocoderEffectFromEffectSpecList(SpecList, i),
SynthParams);
break;
case EffectTypes.eIdealLowpassEffect:
Effect.u = IdealLPRec.NewIdealLP(
GetIdealLPEffectFromEffectSpecList(SpecList, i),
SynthParams);
break;
case EffectTypes.eConvolverEffect:
{
ConvolverRec ConvolverEffect;
SynthErrorCodes Result = ConvolverRec.NewConvolver(
GetConvolverEffectFromEffectSpecList(SpecList, i),
SynthParams,
out ConvolverEffect);
if (Result != SynthErrorCodes.eSynthDone)
{
return(Result);
}
Effect.u = ConvolverEffect;
}
break;
case EffectTypes.eUserEffect:
{
UserEffectProcRec userEffect;
SynthErrorCodes error = UserEffectProcRec.NewTrackUserEffectProc(
GetUserEffectFromEffectSpecList(SpecList, i),
SynthParams,
out userEffect);
if (error != SynthErrorCodes.eSynthDone)
{
return(error);
}
Effect.u = userEffect;
}
break;
case EffectTypes.ePluggableEffect:
{
PluggableSpec Spec = GetPluggableEffectFromEffectSpecList(SpecList, i);
Debug.Assert(Spec is PluggableTrackSpec);
PluggableTrackEffectTemplate Template = new PluggableTrackEffectTemplate(
(PluggableTrackSpec)Spec,
SynthParams);
ITrackEffect effect;
SynthErrorCodes error = Template.Create(
SynthParams,
out effect);
if (error != SynthErrorCodes.eSynthDone)
{
return(error);
}
Effect.u = effect;
}
break;
}
}
}
GeneratorOut = Generator;
return(SynthErrorCodes.eSynthDone);
}
