exp/i2s: loop recording 30 mins to file

exp/i2s/main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"fmt"
 	"log"
 	"os"
 	"time"
@@ -10,29 +9,14 @@ import (
 	yalsa "github.com/yobert/alsa"
 )
 
-const i2sDevName = 	
+const i2sDevName = "simple-card_codec_link snd-soc-dummy-dai-0"
 
 func main() {
 	// Set capture type.
-	var i string
-	var i2s bool
-	fmt.Printf("Force I2S recording? (y/n): ")
-	fmt.Scan(&i)
-	if i == "y" {
-		i2s = true
-	} else {
-		i2s = false
-	}
+	var i2s bool = true
 
 	// Set recording length.
-	var duration time.Duration
-	var err error
-	fmt.Printf("Recording time: ")
-	fmt.Scan(&i)
-	duration, err = time.ParseDuration(i)
-	if err != nil {
-		duration = 5 * time.Second
-	}
+	var duration time.Duration = 30 * time.Minute
 
 	// Find devices.
 	cards, err := yalsa.OpenCards()
@@ -119,6 +103,8 @@ func main() {
 		return
 	}
 
+	// Record audio.
+	for {
 		buf := dev.NewBufferDuration(duration)
 		log.Println("recording for:", duration)
 		err = dev.Read(buf.Data)
@@ -128,7 +114,8 @@ func main() {
 		}
 		log.Println("Recording stopped.")
 
-	file, err := os.Create("audio.wav")
+		fileName := "audio-" + time.Now().Format("2006-01-02_15-04-05") + ".wav"
+		file, err := os.Create(fileName)
 		if err != nil {
 			log.Println("failed to create file:", err)
 			return
@@ -150,5 +137,6 @@ func main() {
 		}
 
 		log.Println("Audio saved to audio.wav")
+	}
 
 }