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fix: native synth building on go 1.21

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go v1.21 is more strict about giving methods to C.structs and was complaining about "cannot define new methods on non-local type *C.Synth". The solution was a local type alias: type BridgeSynth C.Synth
This commit is contained in:
5684185+vsariola@users.noreply.github.com 2023-08-27 12:24:06 +03:00
parent c040bdedee
commit d82d151f49
1 changed files with 12 additions and 6 deletions
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18
vm/compiler/bridge/bridge.go
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@ -16,12 +16,14 @@ import (
type BridgeService struct {
}
type BridgeSynth C.Synth
func (s BridgeService) Compile(patch sointu.Patch, bpm int) (sointu.Synth, error) {
synth, err := Synth(patch, bpm)
return synth, err
}
func Synth(patch sointu.Patch, bpm int) (*C.Synth, error) {
func Synth(patch sointu.Patch, bpm int) (*BridgeSynth, error) {
s := new(C.Synth)
if n := patch.NumDelayLines(); n > 64 {
return nil, fmt.Errorf("native bridge has currently a hard limit of 64 delaylines; patch uses %v", n)
@ -53,7 +55,7 @@ func Synth(patch sointu.Patch, bpm int) (*C.Synth, error) {
s.NumVoices = C.uint(comPatch.NumVoices)
s.Polyphony = C.uint(comPatch.PolyphonyBitmask)
s.RandSeed = 1
return s, nil
return (*BridgeSynth)(s), nil
}
// Render renders until the buffer is full or the modulated time is reached, whichever
@ -77,7 +79,8 @@ func Synth(patch sointu.Patch, bpm int) (*C.Synth, error) {
// time > maxtime, as it is modulated and the time could advance by 2 or more, so the loop
// exit condition would fire when the time is already past maxtime.
// Under no conditions, nsamples >= len(buffer)/2 i.e. guaranteed to never overwrite the buffer.
func (synth *C.Synth) Render(buffer []float32, maxtime int) (int, int, error) {
func (bridgesynth *BridgeSynth) Render(buffer []float32, maxtime int) (int, int, error) {
synth := (*C.Synth)(bridgesynth)
// TODO: syncBuffer is not getting passed to cgo; do we want to even try to support the syncing with the native bridge
if len(buffer)%1 == 1 {
return -1, -1, errors.New("RenderTime writes stereo signals, so buffer should have even length")
@ -92,7 +95,8 @@ func (synth *C.Synth) Render(buffer []float32, maxtime int) (int, int, error) {
}
// Trigger is part of C.Synths' implementation of sointu.Synth interface
func (s *C.Synth) Trigger(voice int, note byte) {
func (bridgesynth *BridgeSynth) Trigger(voice int, note byte) {
s := (*C.Synth)(bridgesynth)
if voice < 0 || voice >= len(s.SynthWrk.Voices) {
return
}
@ -101,7 +105,8 @@ func (s *C.Synth) Trigger(voice int, note byte) {
}
// Release is part of C.Synths' implementation of sointu.Synth interface
func (s *C.Synth) Release(voice int) {
func (bridgesynth *BridgeSynth) Release(voice int) {
s := (*C.Synth)(bridgesynth)
if voice < 0 || voice >= len(s.SynthWrk.Voices) {
return
}
@ -109,7 +114,8 @@ func (s *C.Synth) Release(voice int) {
}
// Update
func (s *C.Synth) Update(patch sointu.Patch, bpm int) error {
func (bridgesynth *BridgeSynth) Update(patch sointu.Patch, bpm int) error {
s := (*C.Synth)(bridgesynth)
if n := patch.NumDelayLines(); n > 64 {
return fmt.Errorf("native bridge has currently a hard limit of 64 delaylines; patch uses %v", n)
}