Move wrapper code into sub-module; adapt/tweak examples

Signed-off-by: Christopher Arndt <chris@chrisarndt.de>

examples/amp.nim

@@ -22,9 +22,12 @@ template db2coeff(db: cfloat): cfloat =
 
 
 proc instantiate(descriptor: ptr Lv2Descriptor; sampleRate: cdouble;
-                 bundlePath: cstring; features: ptr ptr Lv2Feature):
+                 bundlePath: cstring; features: ptr UncheckedArray[ptr Lv2Feature]):
                  Lv2Handle {.cdecl.} =
-    return createShared(AmpPlugin)
+    try:
+        return createShared(AmpPlugin)
+    except OutOfMemDefect:
+        return nil
 
 
 proc connectPort(instance: Lv2Handle; port: cuint;
@@ -78,4 +81,3 @@ proc lv2Descriptor(index: cuint): ptr Lv2Descriptor {.
         result.deactivate = deactivate
         result.cleanup = cleanup
         result.extensionData = extensionData
-

examples/multimode_filter.nim

@@ -24,12 +24,15 @@ type
 
 
 proc instantiate(descriptor: ptr Lv2Descriptor; sampleRate: cdouble;
-                 bundlePath: cstring; features: ptr ptr Lv2Feature):
+                 bundlePath: cstring; features: ptr UncheckedArray[ptr Lv2Feature]):
                  Lv2Handle {.cdecl.} =
-     let plug = createShared(SVFPlugin)
-     plug.svf = initFilterSV(fmLowPass, sampleRate)
-     plug.smoothCutoff = initParamSmooth(20.0, sampleRate)
-     return plug
+    try:
+        let plug = createShared(SVFPlugin)
+        plug.svf = initFilterSV(fmLowPass, sampleRate)
+        plug.smoothCutoff = initParamSmooth(20.0, sampleRate)
+        return cast[Lv2Handle](plug)
+    except OutOfMemDefect:
+        return nil
 
 
 proc connectPort(instance: Lv2Handle; port: cuint;

examples/paramsmooth.nim

@@ -24,7 +24,7 @@ proc setSampleRate*(self: var ParamSmooth, sampleRate: float64) =
         self.z = 0.0
 
 
-proc process*(self: var ParamSmooth, sample: float): float =
+proc process*(self: var ParamSmooth, sample: float): float {.inline.} =
     self.z = (sample * self.b) + (self.z * self.a)
     return self.z
 

src/nymph.nim

@@ -1,32 +1,2 @@
-const LV2_CORE_URI* = "http://lv2plug.in/ns/lv2core"
-
-
-type Lv2Handle* = pointer
-
-
-type Lv2Feature* = object
-    uri*: cstring
-    data*: pointer
-
-
-type Lv2Descriptor* = object
-    uri*: cstring
-
-    instantiate*: proc(descriptor: ptr Lv2Descriptor, sampleRate: cdouble, bundlePath: cstring,
-                       features: ptr ptr Lv2Feature): Lv2Handle {.cdecl.}
-
-    connectPort*: proc(instance: Lv2Handle, port: cuint, dataLocation: pointer) {.cdecl.}
-
-    activate*: proc(instance: Lv2Handle) {.cdecl.}
-
-    run*: proc(instance: Lv2Handle, sampleCount: cuint) {.cdecl.}
-
-    deactivate*: proc(instance: Lv2Handle) {.cdecl.}
-
-    cleanup*: proc(instance: Lv2Handle) {.cdecl.}
-
-    extensionData*: proc(uri: cstring): pointer {.cdecl.}
-
-
-type lv2Descriptor* = proc(index: cuint): ptr Lv2Descriptor {.cdecl.}
-
+import nymph/core
+export core

src/nymph/core.nim

@@ -0,0 +1,120 @@
+const
+    lv2CoreBaseUri = "http://lv2plug.in/ns/lv2core"
+    lv2CorePrefix = lv2CoreBaseUri & "#"
+
+    # Classes (http://lv2plug.in/ns/lv2core#ref-classes):
+    lv2CoreClassAllpassPlugin = lv2CorePrefix & "AllpassPlugin"
+    lv2CoreClassAmplifierPlugin = lv2CorePrefix & "AmplifierPlugin"
+    lv2CoreClassAnalyserPlugin = lv2CorePrefix & "AnalyserPlugin"
+    lv2CoreClassAudioPort = lv2CorePrefix & "AudioPort"
+    lv2CoreClassBandpassPlugin = lv2CorePrefix & "BandpassPlugin"
+    lv2CoreClassCVPort = lv2CorePrefix & "CVPort"
+    lv2CoreClassChorusPlugin = lv2CorePrefix & "ChorusPlugin"
+    lv2CoreClassCombPlugin = lv2CorePrefix & "CombPlugin"
+    lv2CoreClassCompressorPlugin = lv2CorePrefix & "CompressorPlugin"
+    lv2CoreClassConstantPlugin = lv2CorePrefix & "ConstantPlugin"
+    lv2CoreClassControlPort = lv2CorePrefix & "ControlPort"
+    lv2CoreClassConverterPlugin = lv2CorePrefix & "ConverterPlugin"
+    lv2CoreClassDelayPlugin = lv2CorePrefix & "DelayPlugin"
+    lv2CoreClassDistortionPlugin = lv2CorePrefix & "DistortionPlugin"
+    lv2CoreClassDynamicsPlugin = lv2CorePrefix & "DynamicsPlugin"
+    lv2CoreClassEQPlugin = lv2CorePrefix & "EQPlugin"
+    lv2CoreClassEnvelopePlugin = lv2CorePrefix & "EnvelopePlugin"
+    lv2CoreClassExpanderPlugin = lv2CorePrefix & "ExpanderPlugin"
+    lv2CoreClassExtensionData = lv2CorePrefix & "ExtensionData"
+    lv2CoreClassFeature = lv2CorePrefix & "Feature"
+    lv2CoreClassFilterPlugin = lv2CorePrefix & "FilterPlugin"
+    lv2CoreClassFlangerPlugin = lv2CorePrefix & "FlangerPlugin"
+    lv2CoreClassFunctionPlugin = lv2CorePrefix & "FunctionPlugin"
+    lv2CoreClassGatePlugin = lv2CorePrefix & "GatePlugin"
+    lv2CoreClassGeneratorPlugin = lv2CorePrefix & "GeneratorPlugin"
+    lv2CoreClassHighpassPlugin = lv2CorePrefix & "HighpassPlugin"
+    lv2CoreClassInputPort = lv2CorePrefix & "InputPort"
+    lv2CoreClassInstrumentPlugin = lv2CorePrefix & "InstrumentPlugin"
+    lv2CoreClassLimiterPlugin = lv2CorePrefix & "LimiterPlugin"
+    lv2CoreClassLowpassPlugin = lv2CorePrefix & "LowpassPlugin"
+    lv2CoreClassMixerPlugin = lv2CorePrefix & "MixerPlugin"
+    lv2CoreClassModulatorPlugin = lv2CorePrefix & "ModulatorPlugin"
+    lv2CoreClassMultiEQPlugin = lv2CorePrefix & "MultiEQPlugin"
+    lv2CoreClassOscillatorPlugin = lv2CorePrefix & "OscillatorPlugin"
+    lv2CoreClassOutputPort = lv2CorePrefix & "OutputPort"
+    lv2CoreClassParaEQPlugin = lv2CorePrefix & "ParaEQPlugin"
+    lv2CoreClassPhaserPlugin = lv2CorePrefix & "PhaserPlugin"
+    lv2CoreClassPitchPlugin = lv2CorePrefix & "PitchPlugin"
+    lv2CoreClassPlugin = lv2CorePrefix & "Plugin"
+    lv2CoreClassPluginBase = lv2CorePrefix & "PluginBase"
+    lv2CoreClassPoint = lv2CorePrefix & "Point"
+    lv2CoreClassPort = lv2CorePrefix & "Port"
+    lv2CoreClassPortProperty = lv2CorePrefix & "Port"
+    lv2CoreClassResource = lv2CorePrefix & "Resource"
+    lv2CoreClassReverbPlugin = lv2CorePrefix & "ReverbPlugin"
+    lv2CoreClassScalePoint = lv2CorePrefix & "ScalePoint"
+    lv2CoreClassSimulatorPlugin = lv2CorePrefix & "SimulatorPlugin"
+    lv2CoreClassSpatialPlugin = lv2CorePrefix & "SpatialPlugin"
+    lv2CoreClassSpecification = lv2CorePrefix & "Specification"
+    lv2CoreClassSpectralPlugin = lv2CorePrefix & "SpectralPlugin"
+    lv2CoreClassUtilityPlugin = lv2CorePrefix & "UtilityPlugin"
+    lv2CoreClassWaveshaperPlugin = lv2CorePrefix & "WaveshaperPlugin"
+
+    # Properties (http://lv2plug.in/ns/lv2core#ref-properties):
+    lv2CorePropertyAppliesTo = lv2CorePrefix & "appliesTo"
+    lv2CorePropertyBinary = lv2CorePrefix & "binary"
+    lv2CorePropertyDefault = lv2CorePrefix & "default"
+    lv2CorePropertyDesignation = lv2CorePrefix & "designation"
+    lv2CorePropertyDocumentation = lv2CorePrefix & "documentation"
+    lv2CorePropertyExtensionData = lv2CorePrefix & "extensionData"
+    lv2CorePropertyIndex = lv2CorePrefix & "index"
+    lv2CorePropertyLatency = lv2CorePrefix & "latency"
+    lv2CorePropertyMaximum = lv2CorePrefix & "maximum"
+    lv2CorePropertyMicroVersion = lv2CorePrefix & "microVersion"
+    lv2CorePropertyMinimum = lv2CorePrefix & "minimum"
+    lv2CorePropertyMinorVersion = lv2CorePrefix & "minorVersion"
+    lv2CorePropertyName = lv2CorePrefix & "name"
+    lv2CorePropertyOptionalFeature = lv2CorePrefix & "optionalFeature"
+    lv2CorePropertyPort = lv2CorePrefix & "port"
+    lv2CorePropertyPortProperty = lv2CorePrefix & "portProperty"
+    lv2CorePropertyProject = lv2CorePrefix & "project"
+    lv2CorePropertyPrototype = lv2CorePrefix & "prototype"
+    lv2CorePropertyReportsLatency = lv2CorePrefix & "reportsLatency"
+    lv2CorePropertyRequiredFeature = lv2CorePrefix & "requiredFeature"
+    lv2CorePropertyScalePoint = lv2CorePrefix & "scalePoint"
+    lv2CorePropertySymbol = lv2CorePrefix & "symbol"
+
+    # Instances (http://lv2plug.in/ns/lv2core#ref-instances)
+    lv2CoreInstanceConnectionOptional = lv2CorePrefix & "connectionOptional"
+    lv2CoreInstanceControl = lv2CorePrefix & "control"
+    lv2CoreInstanceEnumeration = lv2CorePrefix & "enumeration"
+    lv2CoreInstanceFreeWheeling = lv2CorePrefix & "freeWheeling"
+    lv2CoreInstanceHardRTCapable = lv2CorePrefix & "hardRTCapable"
+    lv2CoreInstanceInPlaceBroken = lv2CorePrefix & "inPlaceBroken"
+    lv2CoreInstanceInteger = lv2CorePrefix & "integer"
+    lv2CoreInstanceIsLive = lv2CorePrefix & "isLive"
+    lv2CoreInstanceSampleRateInstance = lv2CorePrefix & "sampleRate"
+    lv2CoreInstanceToggledInstance = lv2CorePrefix & "toggled"
+
+type Lv2Handle* = pointer
+
+type Lv2Feature* = object
+    uri*: cstring
+    data*: pointer
+
+type Lv2Descriptor* = object
+    uri*: cstring
+
+    instantiate*: proc(descriptor: ptr Lv2Descriptor, sampleRate: cdouble, bundlePath: cstring,
+                       features: ptr UncheckedArray[ptr Lv2Feature]): Lv2Handle {.cdecl.}
+
+    connectPort*: proc(instance: Lv2Handle, port: cuint, dataLocation: pointer) {.cdecl.}
+
+    activate*: proc(instance: Lv2Handle) {.cdecl.}
+
+    run*: proc(instance: Lv2Handle, sampleCount: cuint) {.cdecl.}
+
+    deactivate*: proc(instance: Lv2Handle) {.cdecl.}
+
+    cleanup*: proc(instance: Lv2Handle) {.cdecl.}
+
+    extensionData*: proc(uri: cstring): pointer {.cdecl.}
+
+type lv2Descriptor* = proc(index: cuint): ptr Lv2Descriptor {.cdecl.}
+