From 32e3cd9593a5d765d0dcb710038f0565de9d54c7 Mon Sep 17 00:00:00 2001
From: Martchus <martchus@gmx.net>
Date: Sat, 14 Nov 2020 22:56:47 +0100
Subject: [PATCH] Fix computing MPEG audio frame size

---
 mpegaudio/mpegaudioframe.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mpegaudio/mpegaudioframe.h b/mpegaudio/mpegaudioframe.h
index 90c5921..81a6cca 100644
--- a/mpegaudio/mpegaudioframe.h
+++ b/mpegaudio/mpegaudioframe.h
@@ -119,8 +119,8 @@ inline std::uint16_t MpegAudioFrame::bitrate() const
  */
 constexpr std::uint32_t MpegAudioFrame::paddingSize() const
 {
-    if (isValid()) {
-        return (m_header & 0x60000u) == 0x60000u ? 4u : 1u * (m_header & 0x200u);
+    if (isValid() && (m_header & 0x200u)) {
+        return (m_header & 0x60000u) == 0x60000u ? 4u /* layer 1 */ : 1u /* layer 2 and 3 */;
     } else {
         return 0;
     }