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|
package main
import (
"flag"
"fmt"
"log"
"os"
"strconv"
"mrogalski.eu/go/pulseaudio"
)
func main() {
flag.Parse()
c, e := pulseaudio.NewClient()
if e != nil {
log.Println(e)
os.Exit(1)
}
if os.Args[0] == "puvol-cont" {
cont(c)
} else {
single(c)
}
}
func printvol(c *pulseaudio.Client) float32 {
muted, e := c.Mute()
if muted {
fmt.Println("🔇")
return 0
}
v, e := c.Volume()
if e != nil {
fmt.Println(e)
} else {
var c rune
if v < 0.1 {
c = ''
} else if v < 0.5 {
c = ''
} else if v < 0.8 {
c = ''
} else {
c = ''
}
fmt.Printf("%c % 2d%%\n", c, int(100*v))
}
return v
}
func cont(c *pulseaudio.Client) {
ch, e := c.Updates()
if e != nil {
log.Println(e)
os.Exit(2)
}
for {
printvol(c)
_ = <-ch
}
}
func single(c *pulseaudio.Client) {
if len(os.Args) == 1 {
printvol(c)
return
}
switch a := os.Args[1]; a {
case "toggle":
c.ToggleMute()
printvol(c)
case "mute", "unmute":
c.SetMute(a == "mute")
printvol(c)
case "inc", "dec":
v, e := c.Volume()
if e != nil {
log.Println(e)
os.Exit(2)
}
if a == "inc" {
v += 0.1
} else if a == "dec" {
v -= 0.1
}
if v <= 0 {
v = 0
}
c.SetVolume(float32(v))
printvol(c)
case "set":
if len(os.Args) < 3 {
log.Println("missing volume")
os.Exit(3)
}
v, e := strconv.ParseFloat(os.Args[2], 32)
if e != nil {
log.Println(e)
os.Exit(4)
}
c.SetVolume(float32(v))
printvol(c)
default:
printvol(c)
}
}
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