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
|
package main
// The spotify backend is based on the librespot-golang code released under MIT
// license.
// Authors of the librespot-golang code are:
// Copyright (c) 2015 Paul Lietar
// Copyright (c) 2015 badfortrains
// Copyright (c) 2018 Guillaume "xplodwild" Lesniak
import (
"errors"
"fmt"
"os"
// "github.com/librespot-org/librespot-golang/Spotify"
"github.com/librespot-org/librespot-golang/librespot"
"github.com/librespot-org/librespot-golang/librespot/core"
// "github.com/librespot-org/librespot-golang/librespot/utils"
"github.com/xlab/portaudio-go/portaudio"
// "github.com/xlab/vorbis-go/decoder"
)
const (
deviceName = "wrms"
// The number of samples per channel in the decoded audio
samplesPerChannel = 2048
// The samples bit depth
bitDepth = 16
// The samples format
sampleFormat = portaudio.PaFloat32
)
type SpotifyBackend struct {
session *core.Session
}
func NewSpotify() (*SpotifyBackend, error) {
spotify := SpotifyBackend{}
if err := portaudio.Initialize(); paError(err) {
return nil, errors.New(paErrorText(err))
}
var err error
username := os.Getenv("WRMS_SPOTIFY_USER")
password := os.Getenv("WRMS_SPOTIFY_PASSWORD")
if username == "" || password == "" {
return nil, errors.New("User and password for spotify must be provided")
}
spotify.session, err = librespot.Login(username, password, deviceName)
if err != nil {
return nil, err
}
return &spotify, nil
}
func (spotify *SpotifyBackend) Play(song Song) {
}
func (spotify *SpotifyBackend) Pause() {
}
func (spotify *SpotifyBackend) Search(keyword string) []Song {
session := spotify.session
resp, err := session.Mercury().Search(keyword, 12, session.Country(), session.Username())
if err != nil {
fmt.Println("Failed to search:", err)
return []Song{}
}
res := resp.Results
fmt.Println("Search results for ", keyword)
fmt.Println("=============================")
if res.Error != nil {
fmt.Println("Search result error:", res.Error)
}
fmt.Printf("\nTracks: %d (total %d)\n", len(res.Tracks.Hits), res.Tracks.Total)
for _, track := range res.Tracks.Hits {
fmt.Printf(" => %v (%s)\n", track, track.Uri)
}
return []Song{}
}
// PortAudio helpers
func paError(err portaudio.Error) bool {
return portaudio.ErrorCode(err) != portaudio.PaNoError
}
func paErrorText(err portaudio.Error) string {
return "PortAudio error: " + portaudio.GetErrorText(err)
}
|
