103 lines
2.0 KiB
Go
103 lines
2.0 KiB
Go
package main
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import (
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"fmt"
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"log"
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"os/exec"
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p "github.com/mafik/pulseaudio"
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)
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var SoundVolume = "🔊:0%"
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var pa *p.Client
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// UpdateVolumeInfo updates info about current Sound Volume.
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func UpdateVolumeInfo() {
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var err error
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pa, err = p.NewClient()
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// It can happen if no pulseaudio server running for current user.
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// If no server running we have to run one.
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if err != nil {
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if err := PaReinit(); err != nil {
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log.Print(err)
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return
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}
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}
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vol, err := pa.Volume()
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if err != nil {
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log.Printf("Unable get volume from pulseaudio server: %s", err)
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return
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}
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SoundVolume = fmt.Sprintf("%s:%d%%", Conf.SimpleVolumePa.Symbol, int64(vol*100))
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UpdateReady <- true
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for {
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// Subscribe to update notification channel, to get info that volume changed
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pulseUpdate, err := pa.Updates()
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if err != nil {
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log.Printf("Unable to subscribe to pulseaudio updates: %s", err)
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return
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}
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// Rake update events
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for range pulseUpdate {
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vol, err = pa.Volume()
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if err != nil {
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log.Printf("Unable get volume from pulseaudio server: %s", err)
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return
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}
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SoundVolume = fmt.Sprintf("%s:%d%%", Conf.SimpleVolumePa.Symbol, int64(vol*100))
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UpdateReady <- true
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}
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if err := PaReinit(); err != nil {
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log.Print(err)
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return
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}
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}
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// This code is unreachable :(
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pa.Close()
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}
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// PaReinit re-inits pulseaudio and connection to it.
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func PaReinit() error {
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var err error
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// If we out of updates, it seems that someone killed pulseaudio server. Restart it.
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cmd := exec.Command("pulseaudio", "--check")
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if err := cmd.Run(); err == nil {
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return fmt.Errorf("pulseaudio is already running, but we have troubles contacting it: %w", err)
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}
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cmd = exec.Command("pulseaudio", "--start")
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if err := cmd.Run(); err != nil {
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return fmt.Errorf("unable to initialize pulseaudio server instance: %w", err)
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} //nolint:wsl
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pa, err = p.NewClient()
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if err != nil {
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return fmt.Errorf("unable to make client connection to pulseaudio: %s", err)
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} //nolint:wsl
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return err
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}
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