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This commit is contained in:
5684185+vsariola@users.noreply.github.com
2025-10-23 14:53:08 +03:00
parent 7f03664870
commit fa7901c7c6
9 changed files with 184 additions and 62 deletions
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31
vm/go_synth.go
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@ -7,6 +7,7 @@ import (
"math"
"os"
"path/filepath"
"time"
"github.com/vsariola/sointu"
)
@ -27,6 +28,7 @@ type (
stack []float32
state synthState
delaylines []delayline
cpuLoad sointu.CPULoad
}
// GoSynther is a Synther implementation that can converts patches into
@ -118,6 +120,14 @@ func (s *GoSynth) Release(voiceIndex int) {
func (s *GoSynth) Close() {}
func (s *GoSynth) NumCores() int { return 1 }
func (s *GoSynth) CPULoad(loads []sointu.CPULoad) {
if len(loads) < 1 {
return
}
loads[0] = s.cpuLoad
}
func (s *GoSynth) Update(patch sointu.Patch, bpm int) error {
bytecode, err := NewBytecode(patch, AllFeatures{}, bpm)
if err != nil {
@ -146,7 +156,10 @@ func (s *GoSynth) Update(patch sointu.Patch, bpm int) error {
return nil
}
func (s *GoSynth) Render(buffer sointu.AudioBuffer, maxtime int) (samples int, time int, renderError error) {
func (s *GoSynth) Render(buffer sointu.AudioBuffer, maxtime int) (samples int, renderTime int, renderError error) {
startTime := time.Now()
defer func() { s.cpuLoad.Update(time.Since(startTime), int64(samples)) }()
defer func() {
if err := recover(); err != nil {
renderError = fmt.Errorf("render panicced: %v", err)
@ -156,7 +169,7 @@ func (s *GoSynth) Render(buffer sointu.AudioBuffer, maxtime int) (samples int, t
stack := s.stack[:]
stack = append(stack, []float32{0, 0, 0, 0}...)
synth := &s.state
for time < maxtime && len(buffer) > 0 {
for renderTime < maxtime && len(buffer) > 0 {
opcodesInstr := s.bytecode.Opcodes
operandsInstr := s.bytecode.Operands
opcodes, operands := opcodesInstr, operandsInstr
@ -185,7 +198,7 @@ func (s *GoSynth) Render(buffer sointu.AudioBuffer, maxtime int) (samples int, t
}
tcount := transformCounts[opNoStereo-1]
if len(operands) < tcount {
return samples, time, errors.New("operand stream ended prematurely")
return samples, renderTime, errors.New("operand stream ended prematurely")
}
voice := &voices[0]
unit := &units[0]
@ -292,7 +305,7 @@ func (s *GoSynth) Render(buffer sointu.AudioBuffer, maxtime int) (samples int, t
r := unit.state[0] + float32(math.Exp2(float64(stack[l-1]*2.206896551724138))-1)
w := int(r+1.5) - 1
unit.state[0] = r - float32(w)
time += w
renderTime += w
stack = stack[:l-1]
case opIn:
var channel byte
@ -584,26 +597,26 @@ func (s *GoSynth) Render(buffer sointu.AudioBuffer, maxtime int) (samples int, t
case opSync:
break
default:
return samples, time, errors.New("invalid / unimplemented opcode")
return samples, renderTime, errors.New("invalid / unimplemented opcode")
}
units = units[1:]
}
if len(stack) < 4 {
return samples, time, errors.New("stack underflow")
return samples, renderTime, errors.New("stack underflow")
}
if len(stack) > 4 {
return samples, time, errors.New("stack not empty")
return samples, renderTime, errors.New("stack not empty")
}
buffer[0][0], buffer[0][1] = synth.outputs[0], synth.outputs[1]
synth.outputs[0] = 0
synth.outputs[1] = 0
buffer = buffer[1:]
samples++
time++
renderTime++
s.state.globalTime++
}
s.stack = stack[:0]
return samples, time, nil
return samples, renderTime, nil
}
func (s *synthState) rand() float32 {