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feat: add ability to disable units temporarily

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Quite often the user wants to experiment what particular unit(s) add
to the sound. This commit adds ability to disable any set of units
temporarily, without actually deleting them. Ctrl-D disables and
re-enables the units. Disabled units are considered non-existent in
the patch.

Closes #116.
This commit is contained in:
5684185+vsariola@users.noreply.github.com
2024-02-19 21:36:14 +02:00
parent 2b3f6d8200
commit 17312bbe4e
9 changed files with 95 additions and 23 deletions
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16
patch.go
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@ -44,6 +44,10 @@ type (
// unit, VarArgs is the delaytimes, in samples, of the different delaylines
// in the unit.
VarArgs []int `yaml:",flow,omitempty"`
// Disabled is a flag that can be set to true to disable the unit.
// Disabled units are considered to be not present in the patch.
Disabled bool `yaml:",omitempty"`
}
// UnitParameter documents one parameter that an unit takes
@ -220,7 +224,7 @@ func (u *Unit) Copy() Unit {
}
varArgs := make([]int, len(u.VarArgs))
copy(varArgs, u.VarArgs)
return Unit{Type: u.Type, Parameters: parameters, VarArgs: varArgs, ID: u.ID}
return Unit{Type: u.Type, Parameters: parameters, VarArgs: varArgs, ID: u.ID, Disabled: u.Disabled}
}
// StackChange returns how this unit will affect the signal stack. "pop" and
@ -230,6 +234,9 @@ func (u *Unit) Copy() Unit {
// unit). Effects that just change the topmost signal and will not change the
// number of signals on the stack and thus return 0.
func (u *Unit) StackChange() int {
if u.Disabled {
return 0
}
switch u.Type {
case "addp", "mulp", "pop", "out", "outaux", "aux":
return -1 - u.Parameters["stereo"]
@ -249,6 +256,9 @@ func (u *Unit) StackChange() int {
// this unit is executed. Used to prevent stack underflow. Units producing
// signals do not care what is on the stack before and will return 0.
func (u *Unit) StackNeed() int {
if u.Disabled {
return 0
}
switch u.Type {
case "", "envelope", "oscillator", "noise", "receive", "loadnote", "loadval", "in":
return 0
@ -350,14 +360,14 @@ func (p Patch) InstrumentForVoice(voice int) (int, error) {
// given id. Two units should never have the same id, but if they do, then the
// first match is returned. Id 0 is interpreted as "no id", thus searching for
// id 0 returns an error. Error is also returned if the searched id is not
// found.
// found. FindUnit considers disabled units as non-existent.
func (p Patch) FindUnit(id int) (instrIndex int, unitIndex int, err error) {
if id == 0 {
return 0, 0, errors.New("FindUnit called with id 0")
}
for i, instr := range p {
for u, unit := range instr.Units {
if unit.ID == id {
if unit.ID == id && !unit.Disabled {
return i, u, nil
}
}