Allow audio buffer size to be configured

CHANGELOG

@@ -1,3 +1,6 @@
+0.1.2:
+- Allow audio buffer size to be configured
+
 0.1.1:
 - Improve list browsing
 

audio.go

@@ -20,6 +20,8 @@ import (
 	"github.com/faiface/beep/wav"
 )
 
+const DefaultBufferSize = 500 * time.Millisecond
+
 var (
 	playingFileName   string
 	playingFileInfo   string
@@ -110,7 +112,7 @@ func play(audioFile *AudioFile) {
 	}
 
 	if audioFile.Format.SampleRate != playingSampleRate {
-		err := speaker.Init(audioFile.Format.SampleRate, audioFile.Format.SampleRate.N(time.Second/2))
+		err := speaker.Init(audioFile.Format.SampleRate, audioFile.Format.SampleRate.N(bufferSize))
 		if err != nil {
 			log.Fatalf("failed to initialize audio device: %s", err)
 		}
@@ -204,16 +206,3 @@ func fileFormat(fileName string) string {
 		return "?"
 	}
 }
-
-func closeAudio() {
-	audioLock.Lock()
-	defer audioLock.Unlock()
-
-	speaker.Lock()
-	if playingStreamer != nil {
-		playingStreamer.Close()
-	}
-	speaker.Unlock()
-
-	speaker.Close()
-}

main.go

@@ -28,6 +28,7 @@ Copyright (c) 2020 Trevor Slocum <trevor@rocketnine.space>
 
 var (
 	printVersionInfo bool
+	bufferSize       time.Duration
 	debugAddress     string
 	cpuProfile       string
 
@@ -38,6 +39,7 @@ func main() {
 	log.SetFlags(0)
 
 	flag.BoolVar(&printVersionInfo, "version", false, "print version information and exit")
+	flag.DurationVar(&bufferSize, "buffer-size", DefaultBufferSize, "audio buffer size")
 	flag.StringVar(&debugAddress, "debug-address", "", "address to serve debug info")
 	flag.StringVar(&cpuProfile, "cpu-profile", "", "path to save CPU profiling")
 	flag.Parse()
@@ -125,8 +127,6 @@ func main() {
 	}
 
 	defer func() {
-		closeAudio()
-
 		if app != nil {
 			app.Stop()
 		}