--- hatari/src/includes/wavFormat.h	2019/04/01 07:09:16	1.1
+++ hatari/src/includes/wavFormat.h	2019/04/01 07:14:50	1.1.1.4
@@ -1,9 +1,17 @@
 /*
-  Hatari
+  Hatari - wavFormat.h
+
+  This file is distributed under the GNU Public License, version 2 or at
+  your option any later version. Read the file gpl.txt for details.
 */
 
-extern BOOL bRecordingWav;
+#ifndef HATARI_WAVFORMAT_H
+#define HATARI_WAVFORMAT_H
+
+extern bool bRecordingWav;
+
+extern bool WAVFormat_OpenFile(char *pszWavFileName);
+extern void WAVFormat_CloseFile(void);
+extern void WAVFormat_Update(Sint16 pSamples[][2], int Index, int Length);
 
-extern BOOL WAVFormat_OpenFile(/*HWND hWnd,*/ char *pszWavFileName);
-extern void WAVFormat_CloseFile(/*HWND hWnd*/);
-extern void WAVFormat_Update(char *pSamples,int Index);
+#endif