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fix: more pointer type safety in example plugins

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Signed-off-by: Christopher Arndt <chris@chrisarndt.de>
This commit is contained in:
Christopher Arndt 2026-01-08 04:48:29 +01:00
parent 795a40258a
commit a724f739ac
6 changed files with 25 additions and 21 deletions
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4
examples/amp_plugin.nim
View File

@ -33,7 +33,7 @@ proc instantiate(descriptor: ptr Lv2Descriptor; sampleRate: cdouble;
if plug.map.isNil:
freeShared(plug)
return nil
return cast[Lv2Handle](nil)
let logPtr = cast[ptr Log](lv2FeaturesData(features, lv2LogLog))
@ -43,7 +43,7 @@ proc instantiate(descriptor: ptr Lv2Descriptor; sampleRate: cdouble;
plug.log.note("nymph amp LV2 plugin instance created.")
return cast[Lv2Handle](plug)
except OutOfMemDefect:
return nil
return cast[Lv2Handle](nil)
proc connectPort(instance: Lv2Handle; port: cuint;

6
examples/faustlpf_plugin.nim
View File

@ -21,12 +21,12 @@ proc instantiate(descriptor: ptr Lv2Descriptor; sampleRate: cdouble;
bundlePath: cstring; features: ptr UncheckedArray[ptr Lv2Feature]):
Lv2Handle {.cdecl.} =
try:
let plug = cast[ptr FaustLPFPlugin](createShared(FaustLPFPlugin))
let plug: ptr FaustLPFPlugin = createShared(FaustLPFPlugin)
plug.flt = newfaustlpf()
initfaustlpf(plug.flt, sampleRate.cint)
return cast[Lv2Handle](plug)
except OutOfMemDefect:
return nil
return cast[Lv2Handle](nil)
proc connectPort(instance: Lv2Handle; port: cuint;
@ -73,7 +73,7 @@ let descriptor = Lv2Descriptor(
)
proc lv2Descriptor(index: cuint): ptr Lv2Descriptor {.
cdecl, exportc, dynlib, extern: "lv2_descriptor".} =
cdecl, dynlib, exportc: "lv2_descriptor".} =
if index == 0:
NimMain()
return addr(descriptor)

19
examples/miditranspose_plugin.nim
View File

@ -28,16 +28,19 @@ type
proc instantiate(descriptor: ptr Lv2Descriptor; sampleRate: cdouble;
bundlePath: cstring; features: ptr UncheckedArray[ptr Lv2Feature]):
Lv2Handle {.cdecl.} =
let plug: ptr MidiTransposePlugin = createShared(MidiTransposePlugin)
plug.map = cast[ptr UridMap](lv2FeaturesData(features, lv2UridMap))
try:
let plug: ptr MidiTransposePlugin = createShared(MidiTransposePlugin)
plug.map = cast[ptr UridMap](lv2FeaturesData(features, lv2UridMap))
if plug.map.isNil:
freeShared(plug)
return nil
if plug.map.isNil:
freeShared(plug)
return cast[Lv2Handle](nil)
plug.midi_urid = plug.map.map(plug.map.handle, lv2MidiMidiEvent)
plug.midi_urid = plug.map.map(plug.map.handle, lv2MidiMidiEvent)
return cast[Lv2Handle](plug)
return cast[Lv2Handle](plug)
except OutOfMemDefect:
return cast[Lv2Handle](nil)
proc connectPort(instance: Lv2Handle; port: cuint;
@ -95,7 +98,7 @@ let descriptor = Lv2Descriptor(
)
proc lv2Descriptor(index: cuint): ptr Lv2Descriptor {.
cdecl, exportc, dynlib, extern: "lv2_descriptor".} =
cdecl, dynlib, exportc: "lv2_descriptor".} =
if index == 0:
NimMain()
return addr(descriptor)

6
examples/multimodefilter_plugin.nim
View File

@ -27,12 +27,12 @@ proc instantiate(descriptor: ptr Lv2Descriptor; sampleRate: cdouble;
bundlePath: cstring; features: ptr UncheckedArray[ptr Lv2Feature]):
Lv2Handle {.cdecl.} =
try:
let plug = createShared(SVFPlugin)
let plug: ptr SVFPlugin = createShared(SVFPlugin)
plug.svf = initSVFilter(fmLowPass, sampleRate)
plug.smoothCutoff = initParamSmooth(20.0, sampleRate)
return cast[Lv2Handle](plug)
except OutOfMemDefect:
return nil
return cast[Lv2Handle](nil)
proc connectPort(instance: Lv2Handle; port: cuint;
@ -91,7 +91,7 @@ let descriptor = Lv2Descriptor(
)
proc lv2Descriptor(index: cuint): ptr Lv2Descriptor {.
cdecl, exportc, dynlib, extern: "lv2_descriptor".} =
cdecl, dynlib, exportc: "lv2_descriptor".} =
if index == 0:
NimMain()
return addr(descriptor)

6
examples/tiltfilter_plugin.nim
View File

@ -30,12 +30,12 @@ proc instantiate(descriptor: ptr Lv2Descriptor; sampleRate: cdouble;
bundlePath: cstring; features: ptr UncheckedArray[ptr Lv2Feature]):
Lv2Handle {.cdecl.} =
try:
let plug = createShared(TiltFilterPlugin)
let plug: ptr TiltFilterPlugin = createShared(TiltFilterPlugin)
plug.flt = initTiltFilter(10_000.0, 1.0, fmLowPass, sampleRate)
plug.smoothFreq = initParamSmooth(20.0, sampleRate)
return cast[Lv2Handle](plug)
except OutOfMemDefect:
return nil
return cast[Lv2Handle](nil)
proc connectPort(instance: Lv2Handle; port: cuint;
@ -91,7 +91,7 @@ let descriptor = Lv2Descriptor(
)
proc lv2Descriptor(index: cuint): ptr Lv2Descriptor {.
cdecl, exportc, dynlib, extern: "lv2_descriptor".} =
cdecl, dynlib, exportc: "lv2_descriptor".} =
if index == 0:
NimMain()
return addr(descriptor)

3
src/nymph/core.nim
View File

@ -92,7 +92,8 @@ const
lv2CoreInstanceSampleRate* = lv2CorePrefix & "sampleRate"
lv2CoreInstanceToggled* = lv2CorePrefix & "toggled"
type Lv2Handle* = pointer
type
Lv2Handle* = distinct pointer
type Lv2Feature* = object
uri*: cstring