public static double[] AsDoubles(Synthesizer.Fixed64[] a)
{
//Debug.Assert(sizeof(Synthesizer.Fixed64) == sizeof(double));
UnsafeArrayCastLong cast = new UnsafeArrayCastLong();
cast.fixed64s = a;
return cast.doubles;
}
public static long[] AsLongs(double[] a)
{
Debug.Assert(sizeof(long) == sizeof(double));
UnsafeArrayCastLong cast = new UnsafeArrayCastLong();
cast.doubles = a;
return cast.longs;
}
public static double[] AsDoubles(ulong[] a)
{
Debug.Assert(sizeof(ulong) == sizeof(double));
UnsafeArrayCastLong cast = new UnsafeArrayCastLong();
cast.ulongs = a;
return cast.doubles;
}
/* generate one sequence of samples */
public SynthErrorCodes Generate(
int nActualFrames,
float[] workspace,
int RawBufferLOffset,
int RawBufferROffset,
int PrivateWorkspaceLOffset,
int PrivateWorkspaceROffset,
SynthParamRec SynthParams)
{
SynthErrorCodes error = SynthErrorCodes.eSynthDone;
WaveTableStateRec State = this;
#if DEBUG
Debug.Assert(!SynthParams.ScratchWorkspace1InUse);
SynthParams.ScratchWorkspace1InUse = true;
Debug.Assert(!SynthParams.ScratchWorkspace3InUse);
SynthParams.ScratchWorkspace3InUse = true;
#endif
int loudnessWorkspaceOffset = SynthParams.ScratchWorkspace1LOffset;
int indexWorkspaceOffset = SynthParams.ScratchWorkspace3Offset;
double[] indexWorkspace = UnsafeArrayCastLong.AsDoubles(SynthParams.ScratchWorkspace3);
if (State.PreStartCountdown <= 0)
{
if (State.OscEffectGenerator == null)
{
/* normal case */
if (State.WaveTableWasDefined)
{
Wave_Stereo(
State,
nActualFrames,
workspace,
RawBufferLOffset,
RawBufferROffset,
loudnessWorkspaceOffset,
indexWorkspace,
indexWorkspaceOffset);
}
}
else
{
/* effect postprocessing case */
/* initialize private storage */
FloatVectorZero(
workspace,
PrivateWorkspaceLOffset,
nActualFrames);
FloatVectorZero(
workspace,
PrivateWorkspaceROffset,
nActualFrames);
/* generate waveform */
if (State.WaveTableWasDefined)
{
Wave_Stereo(
State,
nActualFrames,
workspace,
PrivateWorkspaceLOffset,
PrivateWorkspaceROffset,
loudnessWorkspaceOffset,
indexWorkspace,
indexWorkspaceOffset);
}
#if DEBUG
SynthParams.ScratchWorkspace1InUse = false;
SynthParams.ScratchWorkspace3InUse = false;
#endif
/* apply processor to it */
error = ApplyOscEffectGenerator(
State.OscEffectGenerator,
workspace,
PrivateWorkspaceLOffset,
PrivateWorkspaceROffset,
nActualFrames,
SynthParams);
if (error != SynthErrorCodes.eSynthDone)
{
goto Error;
}
/* copy out data */
FloatVectorAcc(
workspace,
PrivateWorkspaceLOffset,
workspace,
RawBufferLOffset,
nActualFrames);
FloatVectorAcc(
workspace,
PrivateWorkspaceROffset,
workspace,
RawBufferROffset,
nActualFrames);
}
}
Error:
#if DEBUG
SynthParams.ScratchWorkspace1InUse = false;
SynthParams.ScratchWorkspace3InUse = false;
#endif
return(error);
}