From 3fb304e5a821c92aeb0490374f10193177b5e2c4 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Mon, 4 Jan 2021 21:42:00 +0900
Subject: [PATCH] audio/internal/convert: Refactoring

---
 audio/internal/convert/float32.go | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/audio/internal/convert/float32.go b/audio/internal/convert/float32.go
index 95dcd68ba..bb06dfdb9 100644
--- a/audio/internal/convert/float32.go
+++ b/audio/internal/convert/float32.go
@@ -32,6 +32,13 @@ type f32Reader struct {
 	buf *byte
 }
 
+func max(a, b int) int {
+	if a < b {
+		return b
+	}
+	return a
+}
+
 func (f *f32Reader) Read(buf []byte) (int, error) {
 	if f.eof {
 		return 0, io.EOF
@@ -45,10 +52,7 @@ func (f *f32Reader) Read(buf []byte) (int, error) {
 		return 1, nil
 	}
 
-	bf := make([]float32, len(buf)/2)
-	if len(buf) == 1 {
-		bf = make([]float32, 1)
-	}
+	bf := make([]float32, max(len(buf)/2, 1))
 
 	n, err := f.r.Read(bf)
 	if err != nil && err != io.EOF {