1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
package main
import (
"io"
"os/exec"
"strings"
"sync"
"syscall"
"muhq.space/go/wrms/llog"
)
type Player struct {
Backends map[string]Backend
mpv *exec.Cmd
wrms *Wrms
}
func NewPlayer(wrms *Wrms, backends []string) Player {
availableBackends := map[string]Backend{}
var b Backend
var err error
for _, backend := range backends {
switch backend {
case "spotify":
b, err = NewSpotify(wrms.Config.Spotify)
case "youtube":
b = NewYoutubeBackend()
case "dummy":
b = &DummyBackend{}
case "local":
b = NewLocalBackend(wrms.Config.LocalMusicDir)
case "upload":
b = NewUploadBackend(wrms.Config.UploadDir)
default:
llog.Error("Not supported backend %s", backend)
}
if err != nil {
llog.Error("Error during initialization of the %s backend: %s", backend, err.Error())
} else {
availableBackends[backend] = b
}
}
return Player{availableBackends, nil, wrms}
}
func (player *Player) Play(song *Song) {
llog.Info("Start playing %v", song)
player.Backends[song.Source].Play(song, player)
}
func (player *Player) runMpv() {
output, err := player.mpv.CombinedOutput()
if err != nil {
llog.Debug("Mpv output: %s", output)
llog.Fatal("Mpv failed with: %s", err)
}
currentSong := wrms.CurrentSong.Load()
llog.Info("mpv finished. Resetting mpv, and calling next")
player.mpv = nil
player.Backends[currentSong.Source].OnSongFinished(currentSong)
wrms.Next()
}
func (player *Player) terminateMpv() {
if player.mpv == nil {
llog.Fatal("Trying to terminate not running mpv process")
}
player.mpv.Process.Signal(syscall.SIGTERM)
player.mpv = nil
}
const MPV_FLAGS = "--no-video"
func mpvArgv(uri string) []string {
cmd := []string{uri}
cmd = append(cmd, strings.Split(MPV_FLAGS, " ")...)
if wrms.Config.MpvFlags != "" {
cmd = append(cmd, strings.Split(wrms.Config.MpvFlags, " ")...)
}
return cmd
}
func (player *Player) startMpv(uri string) {
if player.mpv != nil {
llog.Fatal("Player has already an mpv subprocess")
}
llog.Info("Start mpv to play %s", uri)
cmd := mpvArgv(uri)
llog.Debug("Running 'mpv %s'", strings.Join(cmd, " "))
player.mpv = exec.Command("mpv", cmd...)
}
func (player *Player) PlayUri(uri string) {
player.startMpv(uri)
go player.runMpv()
}
func (player *Player) PlayData(data io.Reader) {
player.startMpv("-")
stdin, err := player.mpv.StdinPipe()
if err != nil {
llog.Fatal("Connecting to mpv Pipe failed: %v", err)
}
go func() {
defer stdin.Close()
if _, err := io.Copy(stdin, data); err != nil {
llog.Fatal("Failed to write song data to mpv: %v", err)
}
}()
go player.runMpv()
}
func (player *Player) Pause() {
if player.mpv != nil {
llog.Debug("Send SIGSTOP to mpv subprocess")
err := player.mpv.Process.Signal(syscall.SIGSTOP)
if err != nil {
llog.Fatal("Failed to send SIGSTOP to mpv")
}
}
}
func (player *Player) Continue() {
if player.mpv == nil {
llog.Warning("Continue Play but there is no running mpv process to continue")
return
}
llog.Debug("Send SIGCONT to mpv subprocess")
err := player.mpv.Process.Signal(syscall.SIGCONT)
if err != nil {
llog.Fatal("Failed to send SIGCONT to mpv")
}
}
func (player *Player) Search(pattern string) chan []Song {
var wg sync.WaitGroup
wg.Add(len(player.Backends))
ch := make(chan []Song)
for _, backend := range player.Backends {
backend := backend
go func() {
ch <- backend.Search(pattern)
wg.Done()
}()
}
go func() {
wg.Wait()
close(ch)
}()
return ch
}
|
