--- a/src/audio/mint/SDL_mintaudio_gsxb.c	Sun May 21 17:27:13 2006 +0000
+++ b/src/audio/mint/SDL_mintaudio_gsxb.c	Sun May 28 13:04:16 2006 +0000
@@ -63,352 +63,368 @@
 
 /*--- Audio driver functions ---*/
 
-static void Mint_CloseAudio(_THIS);
-static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec);
-static void Mint_LockAudio(_THIS);
-static void Mint_UnlockAudio(_THIS);
+static void Mint_CloseAudio (_THIS);
+static int Mint_OpenAudio (_THIS, SDL_AudioSpec * spec);
+static void Mint_LockAudio (_THIS);
+static void Mint_UnlockAudio (_THIS);
 
 /* To check/init hardware audio */
-static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec);
-static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec);
+static int Mint_CheckAudio (_THIS, SDL_AudioSpec * spec);
+static void Mint_InitAudio (_THIS, SDL_AudioSpec * spec);
 
 /* GSXB callbacks */
-static void Mint_GsxbInterrupt(void);
-static void Mint_GsxbNullInterrupt(void);
+static void Mint_GsxbInterrupt (void);
+static void Mint_GsxbNullInterrupt (void);
 
 /*--- Audio driver bootstrap functions ---*/
 
-static int Audio_Available(void)
+static int
+Audio_Available (void)
 {
-	const char *envr = SDL_getenv("SDL_AUDIODRIVER");
+    const char *envr = SDL_getenv ("SDL_AUDIODRIVER");
 
-	/* Check if user asked a different audio driver */
-	if ((envr) && (SDL_strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) {
-		DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n"));
-		return(0);
-	}
+    /* Check if user asked a different audio driver */
+    if ((envr) && (SDL_strcmp (envr, MINT_AUDIO_DRIVER_NAME) != 0)) {
+        DEBUG_PRINT ((DEBUG_NAME "user asked a different audio driver\n"));
+        return (0);
+    }
 
-	/* Cookie _SND present ? if not, assume ST machine */
-	if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
-		cookie_snd = SND_PSG;
-	}
+    /* Cookie _SND present ? if not, assume ST machine */
+    if (Getcookie (C__SND, &cookie_snd) == C_NOTFOUND) {
+        cookie_snd = SND_PSG;
+    }
 
-	/* Check if we have 16 bits audio */
-	if ((cookie_snd & SND_16BIT)==0) {
-		DEBUG_PRINT((DEBUG_NAME "no 16 bits sound\n"));
-	    return(0);
-	}
+    /* Check if we have 16 bits audio */
+    if ((cookie_snd & SND_16BIT) == 0) {
+        DEBUG_PRINT ((DEBUG_NAME "no 16 bits sound\n"));
+        return (0);
+    }
 
-	/* Cookie GSXB present ? */
-	cookie_gsxb = (Getcookie(C_GSXB, &cookie_gsxb) == C_FOUND);
+    /* Cookie GSXB present ? */
+    cookie_gsxb = (Getcookie (C_GSXB, &cookie_gsxb) == C_FOUND);
 
-	/* Is it GSXB ? */
-	if (((cookie_snd & SND_GSXB)==0) || (cookie_gsxb==0)) {
-		DEBUG_PRINT((DEBUG_NAME "no GSXB audio\n"));
-		return(0);
-	}
+    /* Is it GSXB ? */
+    if (((cookie_snd & SND_GSXB) == 0) || (cookie_gsxb == 0)) {
+        DEBUG_PRINT ((DEBUG_NAME "no GSXB audio\n"));
+        return (0);
+    }
 
-	/* Check if audio is lockable */
-	if (Locksnd()!=1) {
-		DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n"));
-		return(0);
-	}
+    /* Check if audio is lockable */
+    if (Locksnd () != 1) {
+        DEBUG_PRINT ((DEBUG_NAME "audio locked by other application\n"));
+        return (0);
+    }
 
-	Unlocksnd();
+    Unlocksnd ();
 
-	DEBUG_PRINT((DEBUG_NAME "GSXB audio available!\n"));
-	return(1);
+    DEBUG_PRINT ((DEBUG_NAME "GSXB audio available!\n"));
+    return (1);
 }
 
-static void Audio_DeleteDevice(SDL_AudioDevice *device)
+static void
+Audio_DeleteDevice (SDL_AudioDevice * device)
 {
-    SDL_free(device->hidden);
-    SDL_free(device);
+    SDL_free (device->hidden);
+    SDL_free (device);
 }
 
-static SDL_AudioDevice *Audio_CreateDevice(int devindex)
+static SDL_AudioDevice *
+Audio_CreateDevice (int devindex)
 {
-	SDL_AudioDevice *this;
+    SDL_AudioDevice *this;
 
-	/* Initialize all variables that we clean on shutdown */
-	this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice));
-    if ( this ) {
-        SDL_memset(this, 0, (sizeof *this));
+    /* Initialize all variables that we clean on shutdown */
+    this = (SDL_AudioDevice *) SDL_malloc (sizeof (SDL_AudioDevice));
+    if (this) {
+        SDL_memset (this, 0, (sizeof *this));
         this->hidden = (struct SDL_PrivateAudioData *)
-                SDL_malloc((sizeof *this->hidden));
+            SDL_malloc ((sizeof *this->hidden));
     }
-    if ( (this == NULL) || (this->hidden == NULL) ) {
-        SDL_OutOfMemory();
-        if ( this ) {
-            SDL_free(this);
+    if ((this == NULL) || (this->hidden == NULL)) {
+        SDL_OutOfMemory ();
+        if (this) {
+            SDL_free (this);
         }
-        return(0);
+        return (0);
     }
-    SDL_memset(this->hidden, 0, (sizeof *this->hidden));
+    SDL_memset (this->hidden, 0, (sizeof *this->hidden));
 
     /* Set the function pointers */
-    this->OpenAudio   = Mint_OpenAudio;
-    this->CloseAudio  = Mint_CloseAudio;
-    this->LockAudio   = Mint_LockAudio;
+    this->OpenAudio = Mint_OpenAudio;
+    this->CloseAudio = Mint_CloseAudio;
+    this->LockAudio = Mint_LockAudio;
     this->UnlockAudio = Mint_UnlockAudio;
-    this->free        = Audio_DeleteDevice;
+    this->free = Audio_DeleteDevice;
 
     return this;
 }
 
 AudioBootStrap MINTAUDIO_GSXB_bootstrap = {
-	MINT_AUDIO_DRIVER_NAME, "MiNT GSXB audio driver",
-	Audio_Available, Audio_CreateDevice
+    MINT_AUDIO_DRIVER_NAME, "MiNT GSXB audio driver",
+    Audio_Available, Audio_CreateDevice
 };
 
-static void Mint_LockAudio(_THIS)
+static void
+Mint_LockAudio (_THIS)
 {
-	/* Stop replay */
-	Buffoper(0);
+    /* Stop replay */
+    Buffoper (0);
 }
 
-static void Mint_UnlockAudio(_THIS)
+static void
+Mint_UnlockAudio (_THIS)
 {
-	/* Restart replay */
-	Buffoper(SB_PLA_ENA|SB_PLA_RPT);
+    /* Restart replay */
+    Buffoper (SB_PLA_ENA | SB_PLA_RPT);
 }
 
-static void Mint_CloseAudio(_THIS)
+static void
+Mint_CloseAudio (_THIS)
 {
-	/* Stop replay */
-	Buffoper(0);
+    /* Stop replay */
+    Buffoper (0);
 
-	/* Uninstall interrupt */
-	if (NSetinterrupt(2, SI_NONE, Mint_GsxbNullInterrupt)<0) {
-		DEBUG_PRINT((DEBUG_NAME "NSetinterrupt() failed in close\n"));
-	}
+    /* Uninstall interrupt */
+    if (NSetinterrupt (2, SI_NONE, Mint_GsxbNullInterrupt) < 0) {
+        DEBUG_PRINT ((DEBUG_NAME "NSetinterrupt() failed in close\n"));
+    }
 
-	/* Wait if currently playing sound */
-	while (SDL_MintAudio_mutex != 0) {
-	}
+    /* Wait if currently playing sound */
+    while (SDL_MintAudio_mutex != 0) {
+    }
 
-	/* Clear buffers */
-	if (SDL_MintAudio_audiobuf[0]) {
-		Mfree(SDL_MintAudio_audiobuf[0]);
-		SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL;
-	}
+    /* Clear buffers */
+    if (SDL_MintAudio_audiobuf[0]) {
+        Mfree (SDL_MintAudio_audiobuf[0]);
+        SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL;
+    }
 
-	/* Unlock sound system */
-	Unlocksnd();
+    /* Unlock sound system */
+    Unlocksnd ();
 }
 
-static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec)
+static int
+Mint_CheckAudio (_THIS, SDL_AudioSpec * spec)
 {
-	long snd_format;
-	int i, resolution, format_signed, format_bigendian;
+    long snd_format;
+    int i, resolution, format_signed, format_bigendian;
 
-	resolution = spec->format & 0x00ff;
-	format_signed = ((spec->format & 0x8000)!=0);
-	format_bigendian = ((spec->format & 0x1000)!=0);
+    resolution = spec->format & 0x00ff;
+    format_signed = ((spec->format & 0x8000) != 0);
+    format_bigendian = ((spec->format & 0x1000) != 0);
 
-	DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff));
-	DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
-	DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0)));
-	DEBUG_PRINT(("channels=%d, ", spec->channels));
-	DEBUG_PRINT(("freq=%d\n", spec->freq));
+    DEBUG_PRINT ((DEBUG_NAME "asked: %d bits, ", spec->format & 0x00ff));
+    DEBUG_PRINT (("signed=%d, ", ((spec->format & 0x8000) != 0)));
+    DEBUG_PRINT (("big endian=%d, ", ((spec->format & 0x1000) != 0)));
+    DEBUG_PRINT (("channels=%d, ", spec->channels));
+    DEBUG_PRINT (("freq=%d\n", spec->freq));
 
-	/* Check formats available */
-	snd_format = Sndstatus(SND_QUERYFORMATS);
-	switch (resolution) {
-		case 8:
-			if ((snd_format & SND_FORMAT8)==0) {
-				SDL_SetError("Mint_CheckAudio: 8 bits samples not supported");
-				return -1;
-			}
-			snd_format = Sndstatus(SND_QUERY8BIT);
-			break;
-		case 16:
-			if ((snd_format & SND_FORMAT16)==0) {
-				SDL_SetError("Mint_CheckAudio: 16 bits samples not supported");
-				return -1;
-			}
-			snd_format = Sndstatus(SND_QUERY16BIT);
-			break;
-		default:
-			SDL_SetError("Mint_CheckAudio: Unsupported sample resolution");
-			return -1;
-			break;
-	}
+    /* Check formats available */
+    snd_format = Sndstatus (SND_QUERYFORMATS);
+    switch (resolution) {
+    case 8:
+        if ((snd_format & SND_FORMAT8) == 0) {
+            SDL_SetError ("Mint_CheckAudio: 8 bits samples not supported");
+            return -1;
+        }
+        snd_format = Sndstatus (SND_QUERY8BIT);
+        break;
+    case 16:
+        if ((snd_format & SND_FORMAT16) == 0) {
+            SDL_SetError ("Mint_CheckAudio: 16 bits samples not supported");
+            return -1;
+        }
+        snd_format = Sndstatus (SND_QUERY16BIT);
+        break;
+    default:
+        SDL_SetError ("Mint_CheckAudio: Unsupported sample resolution");
+        return -1;
+        break;
+    }
 
-	/* Check signed/unsigned format */
-	if (format_signed) {
-		if (snd_format & SND_FORMATSIGNED) {
-			/* Ok */
-		} else if (snd_format & SND_FORMATUNSIGNED) {
-			/* Give unsigned format */
-			spec->format = spec->format & (~0x8000);
-		}
-	} else {
-		if (snd_format & SND_FORMATUNSIGNED) {
-			/* Ok */
-		} else if (snd_format & SND_FORMATSIGNED) {
-			/* Give signed format */
-			spec->format |= 0x8000;
-		}
-	}
+    /* Check signed/unsigned format */
+    if (format_signed) {
+        if (snd_format & SND_FORMATSIGNED) {
+            /* Ok */
+        } else if (snd_format & SND_FORMATUNSIGNED) {
+            /* Give unsigned format */
+            spec->format = spec->format & (~0x8000);
+        }
+    } else {
+        if (snd_format & SND_FORMATUNSIGNED) {
+            /* Ok */
+        } else if (snd_format & SND_FORMATSIGNED) {
+            /* Give signed format */
+            spec->format |= 0x8000;
+        }
+    }
 
-	if (format_bigendian) {
-		if (snd_format & SND_FORMATBIGENDIAN) {
-			/* Ok */
-		} else if (snd_format & SND_FORMATLITTLEENDIAN) {
-			/* Give little endian format */
-			spec->format = spec->format & (~0x1000);
-		}
-	} else {
-		if (snd_format & SND_FORMATLITTLEENDIAN) {
-			/* Ok */
-		} else if (snd_format & SND_FORMATBIGENDIAN) {
-			/* Give big endian format */
-			spec->format |= 0x1000;
-		}
-	}
-	
-	/* Calculate and select the closest frequency */
-	MINTAUDIO_freqcount=0;
-	for (i=1;i<4;i++) {
-		SDL_MintAudio_AddFrequency(this,
-			MASTERCLOCK_44K/(MASTERPREDIV_MILAN*(1<<i)), MASTERCLOCK_44K,
-			(1<<i)-1, -1);
-	}
+    if (format_bigendian) {
+        if (snd_format & SND_FORMATBIGENDIAN) {
+            /* Ok */
+        } else if (snd_format & SND_FORMATLITTLEENDIAN) {
+            /* Give little endian format */
+            spec->format = spec->format & (~0x1000);
+        }
+    } else {
+        if (snd_format & SND_FORMATLITTLEENDIAN) {
+            /* Ok */
+        } else if (snd_format & SND_FORMATBIGENDIAN) {
+            /* Give big endian format */
+            spec->format |= 0x1000;
+        }
+    }
+
+    /* Calculate and select the closest frequency */
+    MINTAUDIO_freqcount = 0;
+    for (i = 1; i < 4; i++) {
+        SDL_MintAudio_AddFrequency (this,
+                                    MASTERCLOCK_44K / (MASTERPREDIV_MILAN *
+                                                       (1 << i)),
+                                    MASTERCLOCK_44K, (1 << i) - 1, -1);
+    }
 
 #if 1
-	for (i=0; i<MINTAUDIO_freqcount; i++) {
-		DEBUG_PRINT((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n",
-			i, MINTAUDIO_frequencies[i].frequency, MINTAUDIO_frequencies[i].masterclock,
-			MINTAUDIO_frequencies[i].predivisor
-		));
-	}
+    for (i = 0; i < MINTAUDIO_freqcount; i++) {
+        DEBUG_PRINT ((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n",
+                      i, MINTAUDIO_frequencies[i].frequency,
+                      MINTAUDIO_frequencies[i].masterclock,
+                      MINTAUDIO_frequencies[i].predivisor));
+    }
 #endif
 
-	MINTAUDIO_numfreq=SDL_MintAudio_SearchFrequency(this, spec->freq);
-	spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency;
+    MINTAUDIO_numfreq = SDL_MintAudio_SearchFrequency (this, spec->freq);
+    spec->freq = MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency;
+
+    DEBUG_PRINT ((DEBUG_NAME "obtained: %d bits, ", spec->format & 0x00ff));
+    DEBUG_PRINT (("signed=%d, ", ((spec->format & 0x8000) != 0)));
+    DEBUG_PRINT (("big endian=%d, ", ((spec->format & 0x1000) != 0)));
+    DEBUG_PRINT (("channels=%d, ", spec->channels));
+    DEBUG_PRINT (("freq=%d\n", spec->freq));
+
+    return 0;
+}
+
+static void
+Mint_InitAudio (_THIS, SDL_AudioSpec * spec)
+{
+    int channels_mode, prediv;
+    void *buffer;
+
+    /* Stop currently playing sound */
+    Buffoper (0);
+
+    /* Set replay tracks */
+    Settracks (0, 0);
+    Setmontracks (0);
 
-	DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff));
-	DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
-	DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0)));
-	DEBUG_PRINT(("channels=%d, ", spec->channels));
-	DEBUG_PRINT(("freq=%d\n", spec->freq));
+    /* Select replay format */
+    switch (spec->format & 0xff) {
+    case 8:
+        if (spec->channels == 2) {
+            channels_mode = STEREO8;
+        } else {
+            channels_mode = MONO8;
+        }
+        break;
+    case 16:
+        if (spec->channels == 2) {
+            channels_mode = STEREO16;
+        } else {
+            channels_mode = MONO16;
+        }
+        break;
+    default:
+        channels_mode = STEREO16;
+        break;
+    }
+    if (Setmode (channels_mode) < 0) {
+        DEBUG_PRINT ((DEBUG_NAME "Setmode() failed\n"));
+    }
 
-	return 0;
+    prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
+    Devconnect (DMAPLAY, DAC, CLKEXT, prediv, 1);
+
+    /* Set buffer */
+    buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
+    if (Setbuffer (0, buffer, buffer + spec->size) < 0) {
+        DEBUG_PRINT ((DEBUG_NAME "Setbuffer() failed\n"));
+    }
+
+    /* Install interrupt */
+    if (NSetinterrupt (2, SI_PLAY, Mint_GsxbInterrupt) < 0) {
+        DEBUG_PRINT ((DEBUG_NAME "NSetinterrupt() failed\n"));
+    }
+
+    /* Go */
+    Buffoper (SB_PLA_ENA | SB_PLA_RPT);
+    DEBUG_PRINT ((DEBUG_NAME "hardware initialized\n"));
 }
 
-static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec)
+static int
+Mint_OpenAudio (_THIS, SDL_AudioSpec * spec)
 {
-	int channels_mode, prediv;
-	void *buffer;
+    /* Lock sound system */
+    if (Locksnd () != 1) {
+        SDL_SetError ("Mint_OpenAudio: Audio system already in use");
+        return (-1);
+    }
 
-	/* Stop currently playing sound */
-	Buffoper(0);
+    SDL_MintAudio_device = this;
 
-	/* Set replay tracks */
-	Settracks(0,0);
-	Setmontracks(0);
+    /* Check audio capabilities */
+    if (Mint_CheckAudio (this, spec) == -1) {
+        return -1;
+    }
+
+    SDL_CalculateAudioSpec (spec);
+
+    /* Allocate memory for audio buffers in DMA-able RAM */
+    DEBUG_PRINT ((DEBUG_NAME "buffer size=%d\n", spec->size));
 
-	/* Select replay format */
-	switch (spec->format & 0xff) {
-		case 8:
-			if (spec->channels==2) {
-				channels_mode=STEREO8;
-			} else {
-				channels_mode=MONO8;
-			}
-			break;
-		case 16:
-			if (spec->channels==2) {
-				channels_mode=STEREO16;
-			} else {
-				channels_mode=MONO16;
-			}
-			break;
-		default:
-			channels_mode=STEREO16;
-			break;
-	}
-	if (Setmode(channels_mode)<0) {
-		DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n"));
-	}
+    SDL_MintAudio_audiobuf[0] = Atari_SysMalloc (spec->size * 2, MX_STRAM);
+    if (SDL_MintAudio_audiobuf[0] == NULL) {
+        SDL_SetError ("MINT_OpenAudio: Not enough memory for audio buffer");
+        return (-1);
+    }
+    SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size;
+    SDL_MintAudio_numbuf = 0;
+    SDL_memset (SDL_MintAudio_audiobuf[0], spec->silence, spec->size * 2);
+    SDL_MintAudio_audiosize = spec->size;
+    SDL_MintAudio_mutex = 0;
 
-	prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
-	Devconnect(DMAPLAY, DAC, CLKEXT, prediv, 1);
+    DEBUG_PRINT ((DEBUG_NAME "buffer 0 at 0x%08x\n",
+                  SDL_MintAudio_audiobuf[0]));
+    DEBUG_PRINT ((DEBUG_NAME "buffer 1 at 0x%08x\n",
+                  SDL_MintAudio_audiobuf[1]));
 
-	/* Set buffer */
-	buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
-	if (Setbuffer(0, buffer, buffer + spec->size)<0) {
-		DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n"));
-	}
-	
-	/* Install interrupt */
-	if (NSetinterrupt(2, SI_PLAY, Mint_GsxbInterrupt)<0) {
-		DEBUG_PRINT((DEBUG_NAME "NSetinterrupt() failed\n"));
-	}
+    /* Setup audio hardware */
+    Mint_InitAudio (this, spec);
 
-	/* Go */
-	Buffoper(SB_PLA_ENA|SB_PLA_RPT);
-	DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
+    return (1);                 /* We don't use threaded audio */
 }
 
-static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec)
+static void
+Mint_GsxbInterrupt (void)
 {
-	/* Lock sound system */
-	if (Locksnd()!=1) {
-   	    SDL_SetError("Mint_OpenAudio: Audio system already in use");
-        return(-1);
-	}
+    Uint8 *newbuf;
 
-	SDL_MintAudio_device = this;
-
-	/* Check audio capabilities */
-	if (Mint_CheckAudio(this, spec)==-1) {
-		return -1;
-	}
-
-	SDL_CalculateAudioSpec(spec);
+    if (SDL_MintAudio_mutex)
+        return;
 
-	/* Allocate memory for audio buffers in DMA-able RAM */
-	DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size));
+    SDL_MintAudio_mutex = 1;
 
-	SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM);
-	if (SDL_MintAudio_audiobuf[0]==NULL) {
-		SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer");
-		return (-1);
-	}
-	SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ;
-	SDL_MintAudio_numbuf=0;
-	SDL_memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2);
-	SDL_MintAudio_audiosize = spec->size;
-	SDL_MintAudio_mutex = 0;
+    SDL_MintAudio_numbuf ^= 1;
+    SDL_MintAudio_Callback ();
+    newbuf = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
+    Setbuffer (0, newbuf, newbuf + SDL_MintAudio_audiosize);
 
-	DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0]));
-	DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1]));
-
-	/* Setup audio hardware */
-	Mint_InitAudio(this, spec);
-
-    return(1);	/* We don't use threaded audio */
+    SDL_MintAudio_mutex = 0;
 }
 
-static void Mint_GsxbInterrupt(void)
+static void
+Mint_GsxbNullInterrupt (void)
 {
-	Uint8 *newbuf;
-
-	if (SDL_MintAudio_mutex)
-		return;
-
-	SDL_MintAudio_mutex=1;
-
-	SDL_MintAudio_numbuf ^= 1;
-	SDL_MintAudio_Callback();
-	newbuf = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
-	Setbuffer(0, newbuf, newbuf + SDL_MintAudio_audiosize);
-
-	SDL_MintAudio_mutex=0;
 }
 
-static void Mint_GsxbNullInterrupt(void)
-{
-}
+/* vi: set ts=4 sw=4 expandtab: */