internal LadspaInstance(LadspaDescriptor descriptor, IntPtr handle, int sampleRate, int bufferSize)
{
if (bufferSize < 512)
{
bufferSize = 512;
}
LadspaDescriptor = descriptor;
this.handle = handle;
this.bufferSize = bufferSize;
this.sampleRate = sampleRate;
int inputCount = 0, outputCount = 0;
for (int i = 0; i < descriptor.Ports.Length; i++)
{
if (descriptor.Ports[i].PortType != LadspaPortType.Audio)
{
continue;
}
LadspaPortDirection dir = descriptor.Ports[i].PortDirection;
if (dir == LadspaPortDirection.Input)
{
inputCount++;
}
else if (dir == LadspaPortDirection.Output)
{
outputCount++;
}
}
InputCount = inputCount;
OutputCount = outputCount;
dataOffsets = new int[descriptor.Ports.Length];
inputOffsets = new int[inputCount];
outputOffsets = new int[outputCount];
paramBuffer = new float[1];
if (descriptor.ConnectPort != null)
{
int dataSize = 0, blockSize = (int)(bufferSize * 4);
inputCount = 0; outputCount = 0;
for (int i = 0; i < descriptor.Ports.Length; i++)
{
dataOffsets[i] = dataSize;
if (descriptor.Ports[i].PortType != LadspaPortType.Audio)
{
dataSize += 4;
}
else
{
LadspaPortDirection dir = descriptor.Ports[i].PortDirection;
if (dir == LadspaPortDirection.Input)
{
inputOffsets[inputCount++] = dataSize;
}
else if (dir == LadspaPortDirection.Output)
{
outputOffsets[outputCount++] = dataSize;
}
dataSize += blockSize;
}
}
if (dataSize > 0)
{
data = Marshal.AllocHGlobal(dataSize);
RtlZeroMemory(data, dataSize);
ResetParameters();
for (uint i = 0; i < descriptor.Ports.Length; i++)
{
descriptor.ConnectPort(handle, i, IntPtr.Add(data, dataOffsets[i]));
}
}
}
}
internal LadspaPort(LadspaDescriptor descriptor, int index,
LadspaPortDescriptorEnum type, LadspaPortRangeHintsEnum hints, string name,
float minBound, float maxBound)
{
Descriptor = descriptor;
Index = index;
Type = type;
Name = name;
Hints = hints;
PortType = type.HasFlag(LadspaPortDescriptorEnum.LADSPA_PORT_CONTROL) ? LadspaPortType.Control :
type.HasFlag(LadspaPortDescriptorEnum.LADSPA_PORT_AUDIO) ? LadspaPortType.Audio : LadspaPortType.Unknown;
PortDirection = type.HasFlag(LadspaPortDescriptorEnum.LADSPA_PORT_INPUT) ? LadspaPortDirection.Input :
type.HasFlag(LadspaPortDescriptorEnum.LADSPA_PORT_OUTPUT) ? LadspaPortDirection.Output : LadspaPortDirection.Unknown;
IsLogarithmic = hints.HasFlag(LadspaPortRangeHintsEnum.LADSPA_HINT_LOGARITHMIC);
IsInteger = hints.HasFlag(LadspaPortRangeHintsEnum.LADSPA_HINT_INTEGER);
IsSampleRateMultiple = hints.HasFlag(LadspaPortRangeHintsEnum.LADSPA_HINT_SAMPLE_RATE);
IsToggled = hints.HasFlag(LadspaPortRangeHintsEnum.LADSPA_HINT_TOGGLED);
if (hints.HasFlag(LadspaPortRangeHintsEnum.LADSPA_HINT_BOUNDED_BELOW))
{
MinimumValue = minBound;
}
else
{
MinimumValue = 0;
}
if (hints.HasFlag(LadspaPortRangeHintsEnum.LADSPA_HINT_BOUNDED_ABOVE))
{
MaximumValue = maxBound;
}
else
{
MaximumValue = 1;
}
switch (hints & LadspaPortRangeHintsEnum.LADSPA_HINT_DEFAULT_MASK)
{
case LadspaPortRangeHintsEnum.LADSPA_HINT_DEFAULT_MINIMUM: DefaultValue = MinimumValue; break;
case LadspaPortRangeHintsEnum.LADSPA_HINT_DEFAULT_LOW:
DefaultValue = IsLogarithmic ? (float)Math.Exp((Math.Log(MinimumValue) * 3 + Math.Log(MaximumValue)) * 0.25) :
(MinimumValue * 3 + MaximumValue) * 0.25f;
break;
case LadspaPortRangeHintsEnum.LADSPA_HINT_DEFAULT_MIDDLE:
DefaultValue = IsLogarithmic ? (float)Math.Exp((Math.Log(MinimumValue) + Math.Log(MaximumValue)) * 0.5) :
(MinimumValue + MaximumValue) * 0.5f;
break;
case LadspaPortRangeHintsEnum.LADSPA_HINT_DEFAULT_HIGH:
DefaultValue = IsLogarithmic ? (float)Math.Exp((Math.Log(MinimumValue) + Math.Log(MaximumValue) * 3) * 0.25) :
(MinimumValue + MaximumValue * 3) * 0.25f;
break;
case LadspaPortRangeHintsEnum.LADSPA_HINT_DEFAULT_MAXIMUM: DefaultValue = MaximumValue; break;
case LadspaPortRangeHintsEnum.LADSPA_HINT_DEFAULT_0: DefaultValue = 0; break;
case LadspaPortRangeHintsEnum.LADSPA_HINT_DEFAULT_1: DefaultValue = 1; break;
case LadspaPortRangeHintsEnum.LADSPA_HINT_DEFAULT_100: DefaultValue = 100; break;
case LadspaPortRangeHintsEnum.LADSPA_HINT_DEFAULT_440: DefaultValue = 440; break;
default: break;
}
}
