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feat(sointu, vm): implement pure-Go interpreter for bytecode

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The old "native" compiler bridged version is now started with cmd/sointu-nativetrack,
while the new pure-Go bytecode implemented bytecode interpreter is started with
cmd/sointu-track

Thus, you do not need any of the CMake / cgo stuff to run cmd/sointu-track
This commit is contained in:
vsariola
2021-03-02 20:47:17 +02:00
parent a035845b81
commit 6d2b63a5e9
13 changed files with 891 additions and 58 deletions
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26
vm/bytepatch.go
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@ -56,17 +56,6 @@ func Encode(patch sointu.Patch, featureSet FeatureSet) (*BytePatch, error) {
}
unit.Parameters["color"] = index
}
if unit.Type == "delay" {
unit.Parameters["delay"] = len(c.DelayTimes)
if unit.Parameters["stereo"] == 1 {
unit.Parameters["count"] = len(unit.VarArgs) / 2
} else {
unit.Parameters["count"] = len(unit.VarArgs)
}
for _, v := range unit.VarArgs {
c.DelayTimes = append(c.DelayTimes, uint16(v))
}
}
opcode, ok := featureSet.Opcode(unit.Type)
if !ok {
return nil, fmt.Errorf(`the targeted virtual machine is not configured to support unit type "%v"`, unit.Type)
@ -156,8 +145,19 @@ func Encode(patch sointu.Patch, featureSet FeatureSet) (*BytePatch, error) {
}
values = append(values, byte(addr&255), byte(addr>>8))
} else if unit.Type == "delay" {
countTrack := (unit.Parameters["count"] << 1) - 1 + unit.Parameters["notetracking"] // 1 means no note tracking and 1 delay, 2 means notetracking with 1 delay, 3 means no note tracking and 2 delays etc.
values = append(values, byte(unit.Parameters["delay"]), byte(countTrack))
count := len(unit.VarArgs)
if unit.Parameters["stereo"] == 1 {
count /= 2
}
if count == 0 {
continue // skip encoding delays without any delay lines
}
countTrack := count*2 - 1 + unit.Parameters["notetracking"] // 1 means no note tracking and 1 delay, 2 means notetracking with 1 delay, 3 means no note tracking and 2 delays etc.
delStart := len(c.DelayTimes)
for _, v := range unit.VarArgs {
c.DelayTimes = append(c.DelayTimes, uint16(v))
}
values = append(values, byte(delStart), byte(countTrack))
}
c.Commands = append(c.Commands, byte(opcode+unit.Parameters["stereo"]))
c.Values = append(c.Values, values...)