From ee3da352dbb1c0f99c7d845afd3a9a67aaa68ca7 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sun, 15 Jan 2017 01:30:28 +0900
Subject: [PATCH] audio: Bug fix: Fix Seek: wav file can have a tail

---
 audio/wav/decode.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/audio/wav/decode.go b/audio/wav/decode.go
index 326bf7b84..e99e41c55 100644
--- a/audio/wav/decode.go
+++ b/audio/wav/decode.go
@@ -57,6 +57,11 @@ func (s *Stream) Seek(offset int64, whence int) (int64, error) {
 		return 0, fmt.Errorf("wav: invalid offset")
 	}
 	s.remaining = s.dataSize - (n - s.headerSize)
+	// There could be a tail in wav file.
+	if s.remaining < 0 {
+		s.remaining = 0
+		return s.dataSize, nil
+	}
 	return n - s.headerSize, nil
 }