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diff src/audio/mint/SDL_mintaudio_xbios.c @ 1662:782fd950bd46 SDL-1.3

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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents a8181c4040b8
children 4da1ee79c9af
line wrap: on
line diff
--- a/src/audio/mint/SDL_mintaudio_xbios.c	Sun May 21 17:27:13 2006 +0000
+++ b/src/audio/mint/SDL_mintaudio_xbios.c	Sun May 28 13:04:16 2006 +0000
@@ -66,422 +66,455 @@
 
 /*--- 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);
 
 /*--- Audio driver bootstrap functions ---*/
 
-static int Audio_Available(void)
+static int
+Audio_Available (void)
 {
-	unsigned long dummy;
-	const char *envr = SDL_getenv("SDL_AUDIODRIVER");
+    unsigned long dummy;
+    const char *envr = SDL_getenv ("SDL_AUDIODRIVER");
 
-	SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND);
+    SDL_MintAudio_mint_present = (Getcookie (C_MiNT, &dummy) == C_FOUND);
 
-	/* We can't use XBIOS in interrupt with Magic, don't know about thread */
-	if (Getcookie(C_MagX, &dummy) == C_FOUND) {
-		return(0);
-	}
+    /* We can't use XBIOS in interrupt with Magic, don't know about thread */
+    if (Getcookie (C_MagX, &dummy) == C_FOUND) {
+        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);
-	}
+    /* 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);
+    }
 
-	/* 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 "XBIOS audio available!\n"));
-	return(1);
+    DEBUG_PRINT ((DEBUG_NAME "XBIOS 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_XBIOS_bootstrap = {
-	MINT_AUDIO_DRIVER_NAME, "MiNT XBIOS audio driver",
-	Audio_Available, Audio_CreateDevice
+    MINT_AUDIO_DRIVER_NAME, "MiNT XBIOS 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 */
-	SDL_MintAudio_WaitThread();
-	Buffoper(0);
+    /* Stop replay */
+    SDL_MintAudio_WaitThread ();
+    Buffoper (0);
 
-	if (!SDL_MintAudio_mint_present) {
-		/* Uninstall interrupt */
-		Jdisint(MFP_DMASOUND);
-	}
+    if (!SDL_MintAudio_mint_present) {
+        /* Uninstall interrupt */
+        Jdisint (MFP_DMASOUND);
+    }
 
-	/* 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 ();
 }
 
 /* Falcon XBIOS implementation of Devconnect() is buggy with external clock */
-static void Devconnect2(int src, int dst, int sclk, int pre)
-{		
-	static const unsigned short MASK1[3] = { 0, 0x6000, 0 };
-	static const unsigned short MASK2[4] = { 0xFFF0, 0xFF8F, 0xF0FF, 0x0FFF };
-	static const unsigned short INDEX1[4] = {  1, 3, 5, 7 };
-	static const unsigned short INDEX2[4] = {  0, 2, 4, 6 };
-	unsigned short sync_div,dev_ctrl,dest_ctrl;
-	void *oldstack;
+static void
+Devconnect2 (int src, int dst, int sclk, int pre)
+{
+    static const unsigned short MASK1[3] = { 0, 0x6000, 0 };
+    static const unsigned short MASK2[4] = { 0xFFF0, 0xFF8F, 0xF0FF, 0x0FFF };
+    static const unsigned short INDEX1[4] = { 1, 3, 5, 7 };
+    static const unsigned short INDEX2[4] = { 0, 2, 4, 6 };
+    unsigned short sync_div, dev_ctrl, dest_ctrl;
+    void *oldstack;
 
-	if (dst==0) {
-		return;
-	}
-
-	oldstack=(void *)Super(0);
+    if (dst == 0) {
+        return;
+    }
 
-	dev_ctrl = DMAAUDIO_IO.dev_ctrl;
-	dest_ctrl = DMAAUDIO_IO.dest_ctrl;
-	dev_ctrl &= MASK2[src];
+    oldstack = (void *) Super (0);
+
+    dev_ctrl = DMAAUDIO_IO.dev_ctrl;
+    dest_ctrl = DMAAUDIO_IO.dest_ctrl;
+    dev_ctrl &= MASK2[src];
 
-	if (src==ADC) {
-		dev_ctrl |= MASK1[sclk];
-	} else {
-		dev_ctrl |= (INDEX1[sclk] << (src<<4));
-	}
+    if (src == ADC) {
+        dev_ctrl |= MASK1[sclk];
+    } else {
+        dev_ctrl |= (INDEX1[sclk] << (src << 4));
+    }
 
-	if (dst & DMAREC) {		
-		dest_ctrl &= 0xFFF0;
-		dest_ctrl |= INDEX1[src];
-	}
+    if (dst & DMAREC) {
+        dest_ctrl &= 0xFFF0;
+        dest_ctrl |= INDEX1[src];
+    }
 
-	if (dst & DSPRECV) {		
-		dest_ctrl &= 0xFF8F;
-		dest_ctrl |= (INDEX1[src]<<4); 
-	}
+    if (dst & DSPRECV) {
+        dest_ctrl &= 0xFF8F;
+        dest_ctrl |= (INDEX1[src] << 4);
+    }
 
-	if (dst & EXTOUT) {		
-		dest_ctrl &= 0xF0FF;
-		dest_ctrl |= (INDEX1[src]<<8); 
-	}
+    if (dst & EXTOUT) {
+        dest_ctrl &= 0xF0FF;
+        dest_ctrl |= (INDEX1[src] << 8);
+    }
 
-	if (dst & DAC) {		
-		dev_ctrl &= 0x0FFF;
-		dev_ctrl |= MASK1[sclk]; 
-		dest_ctrl &=  0x0FFF;
-		dest_ctrl |= (INDEX2[src]<<12); 
-	}
+    if (dst & DAC) {
+        dev_ctrl &= 0x0FFF;
+        dev_ctrl |= MASK1[sclk];
+        dest_ctrl &= 0x0FFF;
+        dest_ctrl |= (INDEX2[src] << 12);
+    }
 
-	sync_div = DMAAUDIO_IO.sync_div;
-	if (sclk==CLKEXT) {
-		pre<<=8;
-		sync_div &= 0xF0FF;
-	} else {
-		sync_div &= 0xFFF0;
-	}
-	sync_div |= pre;
+    sync_div = DMAAUDIO_IO.sync_div;
+    if (sclk == CLKEXT) {
+        pre <<= 8;
+        sync_div &= 0xF0FF;
+    } else {
+        sync_div &= 0xFFF0;
+    }
+    sync_div |= pre;
 
-	DMAAUDIO_IO.dev_ctrl = dev_ctrl;
-	DMAAUDIO_IO.dest_ctrl = dest_ctrl;
-	DMAAUDIO_IO.sync_div = sync_div;
+    DMAAUDIO_IO.dev_ctrl = dev_ctrl;
+    DMAAUDIO_IO.dest_ctrl = dest_ctrl;
+    DMAAUDIO_IO.sync_div = sync_div;
 
-	Super(oldstack);
+    Super (oldstack);
 }
 
-static void Mint_CheckExternalClock(_THIS)
+static void
+Mint_CheckExternalClock (_THIS)
 {
 #define SIZE_BUF_CLOCK_MEASURE (44100/10)
 
-	unsigned long cookie_snd;
-	char *buffer;
-	int i, j;
+    unsigned long cookie_snd;
+    char *buffer;
+    int i, j;
 
-	/* DSP present with its GPIO port ? */
-	if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
-		return;
-	}
-	if ((cookie_snd & SND_DSP)==0) {
-		return;
-	}
+    /* DSP present with its GPIO port ? */
+    if (Getcookie (C__SND, &cookie_snd) == C_NOTFOUND) {
+        return;
+    }
+    if ((cookie_snd & SND_DSP) == 0) {
+        return;
+    }
+
+    buffer = Atari_SysMalloc (SIZE_BUF_CLOCK_MEASURE, MX_STRAM);
+    if (buffer == NULL) {
+        DEBUG_PRINT ((DEBUG_NAME "Not enough memory for the measure\n"));
+        return;
+    }
+    SDL_memset (buffer, 0, SIZE_BUF_CLOCK_MEASURE);
 
-	buffer = Atari_SysMalloc(SIZE_BUF_CLOCK_MEASURE, MX_STRAM);
-	if (buffer==NULL) {
-		DEBUG_PRINT((DEBUG_NAME "Not enough memory for the measure\n"));
-		return;
-	}
-	SDL_memset(buffer, 0, SIZE_BUF_CLOCK_MEASURE);
+    Buffoper (0);
+    Settracks (0, 0);
+    Setmontracks (0);
+    Setmode (MONO8);
+    Jdisint (MFP_TIMERA);
 
-	Buffoper(0);
-	Settracks(0,0);
-	Setmontracks(0);
-	Setmode(MONO8);
-	Jdisint(MFP_TIMERA);
+    for (i = 0; i < 2; i++) {
+        Gpio (GPIO_SET, 7);     /* DSP port gpio outputs */
+        Gpio (GPIO_WRITE, 2 + i);       /* 22.5792/24.576 MHz for 44.1/48KHz */
+        Devconnect2 (DMAPLAY, DAC, CLKEXT, CLK50K);     /* Matrix and clock source */
+        Setbuffer (0, buffer, buffer + SIZE_BUF_CLOCK_MEASURE); /* Set buffer */
+        Xbtimer (XB_TIMERA, 5, 38, SDL_MintAudio_XbiosInterruptMeasureClock);   /* delay mode timer A, prediv /64, 1KHz */
+        Jenabint (MFP_TIMERA);
+        SDL_MintAudio_clocktics = 0;
+        Buffoper (SB_PLA_ENA);
+        usleep (110000);
+
+        if ((Buffoper (-1) & 1) == 0) {
+            if (SDL_MintAudio_clocktics) {
+                unsigned long khz;
 
-	for (i=0; i<2; i++) {
-		Gpio(GPIO_SET,7);      /* DSP port gpio outputs */
-		Gpio(GPIO_WRITE,2+i);  /* 22.5792/24.576 MHz for 44.1/48KHz */
-		Devconnect2(DMAPLAY, DAC, CLKEXT, CLK50K);  /* Matrix and clock source */
-		Setbuffer(0, buffer, buffer + SIZE_BUF_CLOCK_MEASURE);		           /* Set buffer */
-		Xbtimer(XB_TIMERA, 5, 38, SDL_MintAudio_XbiosInterruptMeasureClock); /* delay mode timer A, prediv /64, 1KHz */
-		Jenabint(MFP_TIMERA);
-		SDL_MintAudio_clocktics = 0;
-		Buffoper(SB_PLA_ENA);
-		usleep(110000);
-
-		if((Buffoper(-1) & 1)==0) {
-			if (SDL_MintAudio_clocktics) {
-				unsigned long khz;
-
-				khz = ((SIZE_BUF_CLOCK_MEASURE/SDL_MintAudio_clocktics) +1) & 0xFFFFFFFE;
-				DEBUG_PRINT((DEBUG_NAME "measure %d: freq=%lu KHz\n", i+1, khz));
+                khz =
+                    ((SIZE_BUF_CLOCK_MEASURE /
+                      SDL_MintAudio_clocktics) + 1) & 0xFFFFFFFE;
+                DEBUG_PRINT ((DEBUG_NAME "measure %d: freq=%lu KHz\n",
+                              i + 1, khz));
 
-				if(khz==44) {
-					for (j=1; j<4; j++) {
-						SDL_MintAudio_AddFrequency(this, MASTERCLOCK_44K/(MASTERPREDIV_FALCON*(1<<j)), MASTERCLOCK_44K, (1<<j)-1, 2+i);
-					}
-				} else if (khz==48) {
-					for (j=1; j<4; j++) {
-						SDL_MintAudio_AddFrequency(this, MASTERCLOCK_48K/(MASTERPREDIV_FALCON*(1<<j)), MASTERCLOCK_48K, (1<<j)-1, 2+i);
-					}
-				}
-			} else {
-				DEBUG_PRINT((DEBUG_NAME "No measure\n"));
-			}
-		} else {
-			DEBUG_PRINT((DEBUG_NAME "No SDMA clock\n"));
-		}
+                if (khz == 44) {
+                    for (j = 1; j < 4; j++) {
+                        SDL_MintAudio_AddFrequency (this,
+                                                    MASTERCLOCK_44K
+                                                    /
+                                                    (MASTERPREDIV_FALCON
+                                                     * (1 << j)),
+                                                    MASTERCLOCK_44K,
+                                                    (1 << j) - 1, 2 + i);
+                    }
+                } else if (khz == 48) {
+                    for (j = 1; j < 4; j++) {
+                        SDL_MintAudio_AddFrequency (this,
+                                                    MASTERCLOCK_48K
+                                                    /
+                                                    (MASTERPREDIV_FALCON
+                                                     * (1 << j)),
+                                                    MASTERCLOCK_48K,
+                                                    (1 << j) - 1, 2 + i);
+                    }
+                }
+            } else {
+                DEBUG_PRINT ((DEBUG_NAME "No measure\n"));
+            }
+        } else {
+            DEBUG_PRINT ((DEBUG_NAME "No SDMA clock\n"));
+        }
 
-		Buffoper(0);             /* stop */
-		Jdisint(MFP_TIMERA);     /* Uninstall interrupt */
-	}
+        Buffoper (0);           /* stop */
+        Jdisint (MFP_TIMERA);   /* Uninstall interrupt */
+    }
 
-	Mfree(buffer);
+    Mfree (buffer);
 }
 
-static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec)
+static int
+Mint_CheckAudio (_THIS, SDL_AudioSpec * spec)
 {
-	int i;
-	Uint32 extclock;
+    int i;
+    Uint32 extclock;
 
-	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));
 
-	spec->format |= 0x8000;	/* Audio is always signed */
-	if ((spec->format & 0x00ff)==16) {
-		spec->format |= 0x1000;	/* Audio is always big endian */
-		spec->channels=2;	/* 16 bits always stereo */
-	}
+    spec->format |= 0x8000;     /* Audio is always signed */
+    if ((spec->format & 0x00ff) == 16) {
+        spec->format |= 0x1000; /* Audio is always big endian */
+        spec->channels = 2;     /* 16 bits always stereo */
+    }
 
-	MINTAUDIO_freqcount=0;
+    MINTAUDIO_freqcount = 0;
+
+    /* Add external clocks if present */
+    Mint_CheckExternalClock (this);
 
-	/* Add external clocks if present */
-	Mint_CheckExternalClock(this);
-
-	/* Standard clocks */
-	for (i=1;i<12;i++) {
-		/* Remove unusable Falcon codec predivisors */
-		if ((i==6) || (i==8) || (i==10)) {
-			continue;
-		}
-		SDL_MintAudio_AddFrequency(this, MASTERCLOCK_FALCON1/(MASTERPREDIV_FALCON*(i+1)), MASTERCLOCK_FALCON1, i, -1);
-	}
+    /* Standard clocks */
+    for (i = 1; i < 12; i++) {
+        /* Remove unusable Falcon codec predivisors */
+        if ((i == 6) || (i == 8) || (i == 10)) {
+            continue;
+        }
+        SDL_MintAudio_AddFrequency (this,
+                                    MASTERCLOCK_FALCON1 /
+                                    (MASTERPREDIV_FALCON * (i + 1)),
+                                    MASTERCLOCK_FALCON1, i, -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));
+    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;
+    return 0;
 }
 
-static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec)
+static void
+Mint_InitAudio (_THIS, SDL_AudioSpec * spec)
 {
-	int channels_mode, dmaclock, prediv;
-	void *buffer;
+    int channels_mode, dmaclock, prediv;
+    void *buffer;
 
-	/* Stop currently playing sound */
-	SDL_MintAudio_quit_thread = SDL_FALSE;
-	SDL_MintAudio_thread_finished = SDL_TRUE;
-	SDL_MintAudio_WaitThread();
-	Buffoper(0);
-
-	/* Set replay tracks */
-	Settracks(0,0);
-	Setmontracks(0);
+    /* Stop currently playing sound */
+    SDL_MintAudio_quit_thread = SDL_FALSE;
+    SDL_MintAudio_thread_finished = SDL_TRUE;
+    SDL_MintAudio_WaitThread ();
+    Buffoper (0);
 
-	/* Select replay format */
-	channels_mode=STEREO16;
-	switch (spec->format & 0xff) {
-		case 8:
-			if (spec->channels==2) {
-				channels_mode=STEREO8;
-			} else {
-				channels_mode=MONO8;
-			}
-			break;
-	}
-	if (Setmode(channels_mode)<0) {
-		DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n"));
-	}
+    /* Set replay tracks */
+    Settracks (0, 0);
+    Setmontracks (0);
+
+    /* Select replay format */
+    channels_mode = STEREO16;
+    switch (spec->format & 0xff) {
+    case 8:
+        if (spec->channels == 2) {
+            channels_mode = STEREO8;
+        } else {
+            channels_mode = MONO8;
+        }
+        break;
+    }
+    if (Setmode (channels_mode) < 0) {
+        DEBUG_PRINT ((DEBUG_NAME "Setmode() failed\n"));
+    }
 
-	dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock;
-	prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
-	if (MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits != -1) {
-		Gpio(GPIO_SET,7);		/* DSP port gpio outputs */
-		Gpio(GPIO_WRITE, MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits);
-		Devconnect2(DMAPLAY, DAC|EXTOUT, CLKEXT, prediv);
-	} else {
-		Devconnect2(DMAPLAY, DAC, CLK25M, prediv);
-	}
+    dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock;
+    prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
+    if (MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits != -1) {
+        Gpio (GPIO_SET, 7);     /* DSP port gpio outputs */
+        Gpio (GPIO_WRITE, MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits);
+        Devconnect2 (DMAPLAY, DAC | EXTOUT, CLKEXT, prediv);
+    } else {
+        Devconnect2 (DMAPLAY, DAC, CLK25M, prediv);
+    }
+
+    /* Set buffer */
+    buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
+    if (Setbuffer (0, buffer, buffer + spec->size) < 0) {
+        DEBUG_PRINT ((DEBUG_NAME "Setbuffer() failed\n"));
+    }
 
-	/* Set buffer */
-	buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
-	if (Setbuffer(0, buffer, buffer + spec->size)<0) {
-		DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n"));
-	}
-	
-	if (SDL_MintAudio_mint_present) {
-		SDL_MintAudio_thread_pid = tfork(SDL_MintAudio_Thread, 0);
-	} else {
-		/* Install interrupt */
-		Jdisint(MFP_DMASOUND);
-		Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt);
-		Jenabint(MFP_DMASOUND);
+    if (SDL_MintAudio_mint_present) {
+        SDL_MintAudio_thread_pid = tfork (SDL_MintAudio_Thread, 0);
+    } else {
+        /* Install interrupt */
+        Jdisint (MFP_DMASOUND);
+        Xbtimer (XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt);
+        Jenabint (MFP_DMASOUND);
 
-		if (Setinterrupt(SI_TIMERA, SI_PLAY)<0) {
-			DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n"));
-		}
-	}
+        if (Setinterrupt (SI_TIMERA, SI_PLAY) < 0) {
+            DEBUG_PRINT ((DEBUG_NAME "Setinterrupt() failed\n"));
+        }
+    }
 
-	/* Go */
-	Buffoper(SB_PLA_ENA|SB_PLA_RPT);
-	DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
+    /* Go */
+    Buffoper (SB_PLA_ENA | SB_PLA_RPT);
+    DEBUG_PRINT ((DEBUG_NAME "hardware initialized\n"));
 }
 
-static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec)
+static int
+Mint_OpenAudio (_THIS, SDL_AudioSpec * spec)
 {
-	/* Lock sound system */
-	if (Locksnd()!=1) {
-   	    SDL_SetError("Mint_OpenAudio: Audio system already in use");
-        return(-1);
-	}
-
-	SDL_MintAudio_device = this;
+    /* Lock sound system */
+    if (Locksnd () != 1) {
+        SDL_SetError ("Mint_OpenAudio: Audio system already in use");
+        return (-1);
+    }
 
-	/* Check audio capabilities */
-	if (Mint_CheckAudio(this, spec)==-1) {
-		return -1;
-	}
+    SDL_MintAudio_device = this;
 
-	SDL_CalculateAudioSpec(spec);
+    /* Check audio capabilities */
+    if (Mint_CheckAudio (this, spec) == -1) {
+        return -1;
+    }
 
-	/* Allocate memory for audio buffers in DMA-able RAM */
-	DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size));
+    SDL_CalculateAudioSpec (spec);
+
+    /* Allocate memory for audio buffers in DMA-able RAM */
+    DEBUG_PRINT ((DEBUG_NAME "buffer size=%d\n", spec->size));
 
-	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_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;
 
-	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]));
+    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);
+    /* Setup audio hardware */
+    Mint_InitAudio (this, spec);
 
-    return(1);	/* We don't use SDL threaded audio */
+    return (1);                 /* We don't use SDL threaded audio */
 }
+
+/* vi: set ts=4 sw=4 expandtab: */