basic loop, mp3 support, default image, resize all images to same size

go.mod

@@ -3,6 +3,10 @@ module cmus2obs
 go 1.22.1
 
 require (
-	github.com/go-flac/flacpicture v0.3.0 // indirect
+	github.com/bogem/id3v2/v2 v2.1.4
-	github.com/go-flac/go-flac v1.0.0 // indirect
+	github.com/go-flac/flacpicture v0.3.0
+	github.com/go-flac/go-flac v1.0.0
+	golang.org/x/image v0.15.0
 )
+
+require golang.org/x/text v0.14.0 // indirect

go.sum

@@ -1,4 +1,34 @@
+github.com/bogem/id3v2/v2 v2.1.4 h1:CEwe+lS2p6dd9UZRlPc1zbFNIha2mb2qzT1cCEoNWoI=
+github.com/bogem/id3v2/v2 v2.1.4/go.mod h1:l+gR8MZ6rc9ryPTPkX77smS5Me/36gxkMgDayZ9G1vY=
 github.com/go-flac/flacpicture v0.3.0 h1:LkmTxzFLIynwfhHiZsX0s8xcr3/u33MzvV89u+zOT8I=
 github.com/go-flac/flacpicture v0.3.0/go.mod h1:DPbrzVYQ3fJcvSgLFp9HXIrEQEdfdk/+m0nQCzwodZI=
 github.com/go-flac/go-flac v1.0.0 h1:6qI9XOVLcO50xpzm3nXvO31BgDgHhnr/p/rER/K/doY=
 github.com/go-flac/go-flac v1.0.0/go.mod h1:WnZhcpmq4u1UdZMNn9LYSoASpWOCMOoxXxcWEHSzkW8=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/image v0.15.0 h1:kOELfmgrmJlw4Cdb7g/QGuB3CvDrXbqEIww/pNtNBm8=
+golang.org/x/image v0.15.0/go.mod h1:HUYqC05R2ZcZ3ejNQsIHQDQiwWM4JBqmm6MKANTp4LE=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

main.go

@@ -1,60 +1,92 @@
 package main
 
 import (
+	"bytes"
 	"errors"
 	"fmt"
+	"image"
 	"log"
 	"os"
 	"strings"
+	"time"
 
 	"os/exec"
 
+	"github.com/bogem/id3v2/v2"
 	"github.com/go-flac/flacpicture"
 	"github.com/go-flac/go-flac"
+	"golang.org/x/image/draw"
+
+	_ "image/gif"
+	"image/jpeg"
+	_ "image/jpeg"
+	_ "image/png"
 )
 
-const TIMER = 2
+const (
+	TIMER      = 2
+	IMAGE_SIZE = 700
+)
 
 func main() {
-	c := exec.Command("cmus-remote", "-Q")
+	for {
-	o, _ := c.Output()
+		c := exec.Command("cmus-remote", "-Q")
-	remoteResp := strings.Split(string(o), "\n")
+		o, _ := c.Output()
-	//Album
+		remoteResp := strings.Split(string(o), "\n")
-	album, err := getAttribute(remoteResp, "tag album ")
+		//Album
-	if err != nil {
+		album, err := getAttribute(remoteResp, "tag album ")
-		album = "Unknown"
-	}
-	//artist
-	artist, err := getAttribute(remoteResp, "tag artist ")
-	if err != nil {
-		artist = "Unknown"
-	}
-	// Title
-	title, err := getAttribute(remoteResp, "tag title ")
-	if err != nil {
-		title = "Unknown"
-	}
-
-	filepath, err := getAttribute(remoteResp, "file ")
-	if err != nil {
-		log.Fatal(err.Error())
-	}
-	img := make([]byte, 0)
-	if strings.HasSuffix(filepath, ".flac") {
-		img, err = getFlacArt(filepath)
 		if err != nil {
+			album = "Unknown"
+		}
+		//artist
+		artist, err := getAttribute(remoteResp, "tag artist ")
+		if err != nil {
+			artist = "Unknown"
+		}
+		// Title
+		title, err := getAttribute(remoteResp, "tag title ")
+		if err != nil {
+			title = "Unknown"
+		}
+
+		filepath, err := getAttribute(remoteResp, "file ")
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+
+		img := make([]byte, 0)
+		if strings.HasSuffix(filepath, ".flac") {
+			img, err = getFlacArt(filepath)
+			if err != nil {
+				img = defaultArt()
+			}
+		} else if strings.HasSuffix(filepath, ".mp3") {
+			img, err = getMP3Art(filepath)
+			if err != nil {
+				img = defaultArt()
+			}
+		} else {
 			img = defaultArt()
 		}
-	} else if strings.HasSuffix(filepath, ".mp3") {
+		imgBuff := bytes.NewBuffer(img)
-		getMP3Art()
-	} else {
-		defaultArt()
-	}
 
-	writeTxt("SongAlbum", album)
+		imgOrig, _, err := image.Decode(imgBuff)
-	writeTxt("SongArtist", artist)
+		if err != nil {
-	writeTxt("SongTitle", title)
+			log.Fatal(err.Error())
-	writeJpg("AlbumArt", img)
+		}
+		imgOut := image.NewRGBA(image.Rect(0, 0, IMAGE_SIZE, IMAGE_SIZE))
+
+		draw.BiLinear.Scale(imgOut, imgOut.Rect, imgOrig, imgOrig.Bounds(), draw.Over, nil)
+
+		jpeg.Encode(imgBuff, imgOut, nil)
+
+		writeTxt("SongAlbum", album)
+		writeTxt("SongArtist", artist)
+		writeTxt("SongTitle", title)
+		writeJpg("AlbumArt", img)
+
+		time.Sleep(TIMER * time.Second)
+	}
 }
 
 func getFlacArt(s string) ([]byte, error) {
@@ -71,15 +103,37 @@ func getFlacArt(s string) ([]byte, error) {
 	return nil, errors.New("no image found")
 }
 
-func getMP3Art() {
+func getMP3Art(s string) ([]byte, error) {
-
+	tags, err := id3v2.Open(s, id3v2.Options{Parse: true})
+	if err != nil {
+		return nil, errors.New("can't open mp3 tags")
+	}
+	defer tags.Close()
+	pic := tags.GetFrames(tags.CommonID("Attached picture"))
+	if pic != nil {
+		return pic[0].(id3v2.PictureFrame).Picture, nil //i literally do not care if it has multiple pictures, pick the first one.
+	}
+	return nil, errors.New("no image found")
 }
 
 func defaultArt() []byte {
-	return nil
+	file, err := os.Open("default.jpg")
+	if err != nil {
+		log.Fatal(err.Error())
+	}
+	defer file.Close()
+	info, err := file.Stat()
+	if err != nil {
+		log.Fatal(err.Error())
+	}
+	art := make([]byte, info.Size())
+
+	file.Read(art)
+	return art
 }
 
 func writeJpg(filename string, input []byte) {
+	os.Mkdir("output", 0755)
 	f, err := os.Create("./output/" + filename + ".jpg")
 	if err != nil {
 		log.Fatal(err.Error())
@@ -90,6 +144,7 @@ func writeJpg(filename string, input []byte) {
 }
 
 func writeTxt(filename, input string) {
+	os.Mkdir("output", 0755)
 	f, err := os.Create("./output/" + filename + ".txt")
 	if err != nil {
 		log.Fatal(err.Error())