mpris_server_example.go

package main

import (
	"log"

	"github.com/godbus/dbus/v5"
	"github.com/godbus/dbus/v5/prop"
)

type Instancee struct {
	props *prop.Properties
	conn  *dbus.Conn
}

var player = map[string]*prop.Prop{
	"PlaybackStatus": newProp("Playing", nil),
	"Rate":           newProp(1.0, nil),
	"Metadata":       newProp(map[string]interface{}{}, nil),
	"Volume":         newProp(float64(100), nil),
	"Position":       newProp(int64(0), nil),
	"MinimumRate":    newProp(1.0, nil),
	"MaximumRate":    newProp(1.0, nil),
	"CanGoNext":      newProp(false, nil),
	"CanGoPrevious":  newProp(false, nil),
	"CanPlay":        newProp(true, nil),
	"CanPause":       newProp(true, nil),
	"CanSeek":        newProp(false, nil),
	"CanControl":     newProp(false, nil),
}

var mediaPlayer2 = map[string]*prop.Prop{
	"CanQuit":             newProp(false, nil),
	"CanRaise":            newProp(false, nil),
	"HasTrackList":        newProp(false, nil),
	"Identity":            newProp("myPlayer", nil),
	"SupportedUriSchemes": newProp([]string{}, nil),
	"SupportedMimeTypes":  newProp([]string{}, nil),
}

func main() {
	conn, err := dbus.ConnectSessionBus()
	if err != nil {
		log.Fatalln(err)
	}

	ins := &Instancee{
		conn: conn,
	}

	ins.props, err = prop.Export(
		conn,
		"/org/mpris/MediaPlayer2",
		map[string]map[string]*prop.Prop{
			"org.mpris.MediaPlayer2":        mediaPlayer2,
			"org.mpris.MediaPlayer2.Player": player,
		},
	)
	if err != nil {
		log.Fatalln(err)
	}

	reply, err := conn.RequestName("org.mpris.MediaPlayer2.myPlayer", dbus.NameFlagReplaceExisting)
	if err != nil {
		log.Fatalln(err)
	}
	if reply != dbus.RequestNameReplyPrimaryOwner {
		log.Fatalln("Name already taken")
	}

	select {}
}

func newProp(value interface{}, cb func(*prop.Change) *dbus.Error) *prop.Prop {
	return &prop.Prop{
		Value:    value,
		Writable: true,
		Emit:     prop.EmitTrue,
		Callback: cb,
	}
}