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Implement a song struct to hold all the information of a single song (corresponding one .asm file) and Render function for it.

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This commit is contained in:
Veikko Sariola
2020-10-24 23:25:23 +03:00
parent be7a4e21f3
commit 6c90ba2067
3 changed files with 215 additions and 2 deletions
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18
bridge/bridge.go
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@ -28,6 +28,16 @@ type Instrument struct {
Units []Unit
}
type Patch []Instrument
func (p Patch) TotalVoices() int {
ret := 0
for _, i := range p {
ret += i.NumVoices
}
return ret
}
var ( // cannot be const as the rhs are not known at compile-time
Add = Opcode(C.su_add_id)
Addp = Opcode(C.su_addp_id)
@ -100,7 +110,7 @@ func (s *SynthState) Render(buffer []float32, maxRows int, callback func()) (int
return maxSamples - remaining, nil
}
func (s *SynthState) SetPatch(patch []Instrument) error {
func (s *SynthState) SetPatch(patch Patch) error {
totalVoices := 0
commands := make([]Opcode, 0)
values := make([]byte, 0)
@ -138,7 +148,7 @@ func (s *SynthState) SetPatch(patch []Instrument) error {
return nil
}
func (s *SynthState) Trigger(voice int, note int) {
func (s *SynthState) Trigger(voice int, note byte) {
cs := (*C.SynthState)(s)
cs.Synth.Voices[voice] = C.Voice{}
cs.Synth.Voices[voice].Note = C.int(note)
@ -149,6 +159,10 @@ func (s *SynthState) Release(voice int) {
cs.Synth.Voices[voice].Release = 1
}
func (s *SynthState) SetSamplesPerRow(spr int) {
s.SamplesPerRow = C.uint(spr)
}
func NewSynthState() *SynthState {
s := new(SynthState)
s.RandSeed = 1