--- hatari/src/includes/audio.h	2019/04/01 07:10:34	1.1.1.4
+++ hatari/src/includes/audio.h	2019/04/01 07:14:44	1.1.1.7
@@ -8,8 +8,6 @@
 #ifndef HATARI_AUDIO_H
 #define HATARI_AUDIO_H
 
-#include <SDL_types.h>
-
 /* Frequency index */
 enum
 {
@@ -18,20 +16,8 @@ enum
   FREQ_44Khz
 };
 
-/* Ramp settings to fade sound in/out */
-enum
-{
-  RAMP_HOLD,
-  RAMP_UP,
-  RAMP_DOWN
-};
-#define  RAMP_UP_VOLUME_LEVEL  0.20f    /* (1.0f/5.f) */
-#define  RAMP_DOWN_VOLUME_LEVEL  0.20f  /* (1.0f/5.f) */
-
-
-extern int SoundPlayBackFrequencies[];
-extern BOOL bDisableSound;
-extern BOOL bSoundWorking;
+extern const int SoundPlayBackFrequencies[];
+extern bool bSoundWorking;
 extern int OutputAudioFreqIndex;
 extern int SoundBufferSize;
 extern int CompleteSndBufIdx;
@@ -42,7 +28,6 @@ extern void Audio_Lock(void);
 extern void Audio_Unlock(void);
 extern void Audio_FreeSoundBuffer(void);
 extern void Audio_SetOutputAudioFreq(int Frequency);
-extern void Audio_EnableAudio(BOOL bEnable);
-extern void Audio_WriteSamplesIntoBuffer(Sint8 *pSamples,int Index, int Length, int RampSetting, Sint8 *pDestBuffer);
+extern void Audio_EnableAudio(bool bEnable);
 
 #endif  /* HATARI_AUDIO_H */