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Change the Go API to have two versions: Render(buffer []float32), which always fill the whole buffer, and RenderTime(buffer []float32,int maxtime), which ends either when the buffer is full, or modulated time is reached.

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This commit is contained in:
Veikko Sariola
2020-10-27 17:26:08 +02:00
parent 7a9ac3489b
commit 5f4b85b0a4
3 changed files with 49 additions and 30 deletions
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6
song/song.go
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@ -93,7 +93,6 @@ func (s *Song) Render() ([]float32, error) {
}
synth := bridge.NewSynthState()
synth.SetPatch(s.Patch)
synth.SetSamplesPerRow(44100 * 60 / (s.BPM * 4))
curVoices := make([]int, len(s.Tracks))
for i := range curVoices {
curVoices[i] = s.FirstTrackVoice(i)
@ -104,6 +103,7 @@ func (s *Song) Render() ([]float32, error) {
}
buffer := make([]float32, samples*2)
totaln := 0
rowtime := 44100 * 60 / (s.BPM * 4)
for row := 0; row < s.TotalRows(); row++ {
patternRow := row % s.PatternRows()
pattern := row / s.PatternRows()
@ -123,8 +123,8 @@ func (s *Song) Render() ([]float32, error) {
synth.Trigger(curVoices[t], note)
}
}
n, _, _ := synth.Render(buffer[2*totaln:])
totaln += n
samples, _, _ := synth.RenderTime(buffer[2*totaln:], rowtime)
totaln += samples
}
return buffer, nil
}