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Able to control stream volume

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This commit is contained in:
nemunaire 2023-11-15 11:31:48 +01:00
commit d2090bee67
5 changed files with 190 additions and 42 deletions
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70
inputs/pulseaudio/input.go
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@ -82,16 +82,24 @@ func (s *PulseaudioInput) IsActive() bool {
return false
}
func (s *PulseaudioInput) CurrentlyPlaying() map[string]string {
func (s *PulseaudioInput) getPASinkInputs() ([]PASinkInput, error) {
cmd := exec.Command("pactl", "-f", "json", "list", "sink-inputs")
stdoutStderr, err := cmd.CombinedOutput()
if err != nil {
log.Println("Unable to list sink-inputs:", err.Error())
return nil
return nil, fmt.Errorf("unable to list sink-inputs: %w", err)
}
var sinkinputs []PASinkInput
err = json.Unmarshal(stdoutStderr, &sinkinputs)
if err != nil {
return nil, fmt.Errorf("unable to parse sink-inputs list: %w", err)
}
return sinkinputs, nil
}
func (s *PulseaudioInput) CurrentlyPlaying() map[string]string {
sinkinputs, err := s.getPASinkInputs()
if err != nil {
log.Println("Unable to list sink-inputs:", err.Error())
return nil
@ -110,3 +118,59 @@ func (s *PulseaudioInput) CurrentlyPlaying() map[string]string {
return ret
}
func (s *PulseaudioInput) GetMixers() (map[string]*inputs.InputMixer, error) {
sinkinputs, err := s.getPASinkInputs()
if err != nil {
return nil, err
}
ret := map[string]*inputs.InputMixer{}
for _, input := range sinkinputs {
var maxvolume string
for k, vol := range input.Volume {
if maxvolume == "" || vol.Value > input.Volume[maxvolume].Value {
maxvolume = k
}
}
ret[strconv.FormatInt(input.Index, 10)] = &inputs.InputMixer{
Volume: input.Volume[maxvolume].Value,
VolumePercent: input.Volume[maxvolume].ValuePercent,
VolumeDB: input.Volume[maxvolume].DB,
Balance: input.Balance,
Mute: input.Mute,
}
}
return ret, nil
}
func (s *PulseaudioInput) SetMixer(stream string, volume *inputs.InputMixer) error {
sinkinputs, err := s.getPASinkInputs()
if err != nil {
return err
}
for _, input := range sinkinputs {
if strconv.FormatInt(input.Index, 10) == stream {
cmd := exec.Command("pactl", "set-sink-input-volume", stream, strconv.FormatUint(uint64(volume.Volume), 10))
err := cmd.Run()
if err != nil {
return fmt.Errorf("unable to set volume: %w", err)
}
if input.Mute != volume.Mute {
cmd := exec.Command("pactl", "set-sink-input-mute", stream, "toggle")
err := cmd.Run()
if err != nil {
return fmt.Errorf("unable to change mute state: %w", err)
}
}
return nil
}
}
return fmt.Errorf("unable to find stream %q", stream)
}