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fix(cmd/sointu-vsti): query sample rate through host.GetTimeInfo

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Closes #222
This commit is contained in:
5684185+vsariola@users.noreply.github.com
2026-02-14 23:00:25 +02:00
parent f2f76c0e18
commit b8d9ca09f1
2 changed files with 18 additions and 2 deletions
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4
CHANGELOG.md
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@ -37,6 +37,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
roughly to -12 dBFS true peak. ([#211][i211])
### Fixed
- VSTi queries the host sample rate more robustly. Cubase previously reported
the sample rate as 0 Hz, leading to persistent error message about the sample
rate not being 44100 Hz. ([#222][i222])
- Occasional NaNs in the Trisaw oscillator when the color was 0 in the Go VM.
- The tracker thought that "sync" unit pops the value from stack, even if the VM
did not, resulting it claiming errors in patches that worked once compiled.
@ -427,3 +430,4 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
[i211]: https://github.com/vsariola/sointu/issues/211
[i215]: https://github.com/vsariola/sointu/issues/215
[i221]: https://github.com/vsariola/sointu/issues/221
[i222]: https://github.com/vsariola/sointu/issues/222

16
cmd/sointu-vsti/main.go
View File

@ -34,6 +34,14 @@ func (c *VSTIProcessContext) BPM() (bpm float64, ok bool) {
return timeInfo.Tempo, true
}
func (c *VSTIProcessContext) SampleRate() (samplerate float64, ok bool) {
timeInfo := c.host.GetTimeInfo(0)
if timeInfo == nil || timeInfo.SampleRate == 0 {
return 0, false
}
return timeInfo.SampleRate, true
}
func init() {
var (
version = int32(100)
@ -60,6 +68,7 @@ func init() {
context := &VSTIProcessContext{host: h}
buf := make(sointu.AudioBuffer, 1024)
var totalFrames int64 = 0
start := time.Now()
return vst2.Plugin{
UniqueID: [4]byte{'S', 'n', 't', 'u'},
Version: version,
@ -70,8 +79,11 @@ func init() {
Category: vst2.PluginCategorySynth,
Flags: vst2.PluginIsSynth,
ProcessFloatFunc: func(in, out vst2.FloatBuffer) {
if s := h.GetSampleRate(); math.Abs(float64(h.GetSampleRate()-44100.0)) > 1e-6 {
player.SendAlert("WrongSampleRate", fmt.Sprintf("VSTi host sample rate is %.0f Hz; sointu supports 44100 Hz only", s), tracker.Error)
if time.Since(start) > 2*time.Second { // limit the rate we query the samplerate from the host and send alerts
if s, ok := context.SampleRate(); ok && math.Abs(float64(s-44100.0)) > 1e-6 {
player.SendAlert("WrongSampleRate", fmt.Sprintf("VSTi host sample rate is %.0f Hz; Sointu supports 44100 Hz only", s), tracker.Error)
}
start = time.Now()
}
left := out.Channel(0)
right := out.Channel(1)