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

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_stfa.c	Sun May 21 17:27:13 2006 +0000
+++ b/src/audio/mint/SDL_mintaudio_stfa.c	Sun May 28 13:04:16 2006 +0000
@@ -62,256 +62,270 @@
 static unsigned long cookie_snd, cookie_mch;
 static cookie_stfa_t *cookie_stfa;
 
-static const int freqs[16]={
-	4995,	6269,	7493,	8192,
-	9830,	10971,	12538,	14985,
-	16384,	19819,	21943,	24576,
-	30720,	32336,	43885,	49152
+static const int freqs[16] = {
+    4995, 6269, 7493, 8192,
+    9830, 10971, 12538, 14985,
+    16384, 19819, 21943, 24576,
+    30720, 32336, 43885, 49152
 };
 
 /*--- 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)
 {
-	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 _MCH present ? if not, assume ST machine */
-	if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) {
-		cookie_mch = MCH_ST;
-	}
+    /* Cookie _MCH present ? if not, assume ST machine */
+    if (Getcookie (C__MCH, &cookie_mch) == C_NOTFOUND) {
+        cookie_mch = MCH_ST;
+    }
 
-	/* 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;
+    }
 
-	/* Cookie STFA present ? */
-	if (Getcookie(C_STFA, (long *) &cookie_stfa) != C_FOUND) {
-		DEBUG_PRINT((DEBUG_NAME "no STFA audio\n"));
-		return(0);
-	}
+    /* Cookie STFA present ? */
+    if (Getcookie (C_STFA, (long *) &cookie_stfa) != C_FOUND) {
+        DEBUG_PRINT ((DEBUG_NAME "no STFA audio\n"));
+        return (0);
+    }
 
-	SDL_MintAudio_stfa = cookie_stfa;
+    SDL_MintAudio_stfa = cookie_stfa;
 
-	DEBUG_PRINT((DEBUG_NAME "STFA audio available!\n"));
-	return(1);
+    DEBUG_PRINT ((DEBUG_NAME "STFA 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_STFA_bootstrap = {
-	MINT_AUDIO_DRIVER_NAME, "MiNT STFA audio driver",
-	Audio_Available, Audio_CreateDevice
+    MINT_AUDIO_DRIVER_NAME, "MiNT STFA audio driver",
+    Audio_Available, Audio_CreateDevice
 };
 
-static void Mint_LockAudio(_THIS)
+static void
+Mint_LockAudio (_THIS)
 {
-	void *oldpile;
+    void *oldpile;
 
-	/* Stop replay */
-	oldpile=(void *)Super(0);
-	cookie_stfa->sound_enable=STFA_PLAY_DISABLE;
-	Super(oldpile);
+    /* Stop replay */
+    oldpile = (void *) Super (0);
+    cookie_stfa->sound_enable = STFA_PLAY_DISABLE;
+    Super (oldpile);
 }
 
-static void Mint_UnlockAudio(_THIS)
+static void
+Mint_UnlockAudio (_THIS)
 {
-	void *oldpile;
+    void *oldpile;
 
-	/* Restart replay */
-	oldpile=(void *)Super(0);
-	cookie_stfa->sound_enable=STFA_PLAY_ENABLE|STFA_PLAY_REPEAT;
-	Super(oldpile);
+    /* Restart replay */
+    oldpile = (void *) Super (0);
+    cookie_stfa->sound_enable = STFA_PLAY_ENABLE | STFA_PLAY_REPEAT;
+    Super (oldpile);
 }
 
-static void Mint_CloseAudio(_THIS)
+static void
+Mint_CloseAudio (_THIS)
 {
-	void *oldpile;
+    void *oldpile;
 
-	/* Stop replay */
-	oldpile=(void *)Super(0);
-	cookie_stfa->sound_enable=STFA_PLAY_DISABLE;
-	Super(oldpile);
+    /* Stop replay */
+    oldpile = (void *) Super (0);
+    cookie_stfa->sound_enable = STFA_PLAY_DISABLE;
+    Super (oldpile);
 
-	/* 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;
+    }
 }
 
-static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec)
+static int
+Mint_CheckAudio (_THIS, SDL_AudioSpec * spec)
 {
-	int i;
+    int i;
 
-	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 */
-	MINTAUDIO_freqcount=0;
-	for (i=0;i<16;i++) {
-		SDL_MintAudio_AddFrequency(this, freqs[i], 0, i, -1);
-	}
+    /* Check formats available */
+    MINTAUDIO_freqcount = 0;
+    for (i = 0; i < 16; i++) {
+        SDL_MintAudio_AddFrequency (this, freqs[i], 0, 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)
 {
-	void *buffer;
-	void *oldpile;
+    void *buffer;
+    void *oldpile;
 
-	buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
+    buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
 
-	oldpile=(void *)Super(0);
+    oldpile = (void *) Super (0);
 
-	/* Stop replay */
-	cookie_stfa->sound_enable=STFA_PLAY_DISABLE;
+    /* Stop replay */
+    cookie_stfa->sound_enable = STFA_PLAY_DISABLE;
 
-	/* Select replay format */
-	cookie_stfa->sound_control = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
-	if ((spec->format & 0xff)==8) {
-		cookie_stfa->sound_control |= STFA_FORMAT_8BIT;
-	} else {
-		cookie_stfa->sound_control |= STFA_FORMAT_16BIT;
-	}
-	if (spec->channels==2) {
-		cookie_stfa->sound_control |= STFA_FORMAT_STEREO;
-	} else {
-		cookie_stfa->sound_control |= STFA_FORMAT_MONO;
-	}
-	if ((spec->format & 0x8000)!=0) {
-		cookie_stfa->sound_control |= STFA_FORMAT_SIGNED;
-	} else {
-		cookie_stfa->sound_control |= STFA_FORMAT_UNSIGNED;
-	}
-	if ((spec->format & 0x1000)!=0) {
-		cookie_stfa->sound_control |= STFA_FORMAT_BIGENDIAN;
-	} else {
-		cookie_stfa->sound_control |= STFA_FORMAT_LITENDIAN;
-	}
+    /* Select replay format */
+    cookie_stfa->sound_control =
+        MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
+    if ((spec->format & 0xff) == 8) {
+        cookie_stfa->sound_control |= STFA_FORMAT_8BIT;
+    } else {
+        cookie_stfa->sound_control |= STFA_FORMAT_16BIT;
+    }
+    if (spec->channels == 2) {
+        cookie_stfa->sound_control |= STFA_FORMAT_STEREO;
+    } else {
+        cookie_stfa->sound_control |= STFA_FORMAT_MONO;
+    }
+    if ((spec->format & 0x8000) != 0) {
+        cookie_stfa->sound_control |= STFA_FORMAT_SIGNED;
+    } else {
+        cookie_stfa->sound_control |= STFA_FORMAT_UNSIGNED;
+    }
+    if ((spec->format & 0x1000) != 0) {
+        cookie_stfa->sound_control |= STFA_FORMAT_BIGENDIAN;
+    } else {
+        cookie_stfa->sound_control |= STFA_FORMAT_LITENDIAN;
+    }
 
-	/* Set buffer */
-	cookie_stfa->sound_start = (unsigned long) buffer;
-	cookie_stfa->sound_end = (unsigned long) (buffer + spec->size);
+    /* Set buffer */
+    cookie_stfa->sound_start = (unsigned long) buffer;
+    cookie_stfa->sound_end = (unsigned long) (buffer + spec->size);
 
-	/* Set interrupt */
-	cookie_stfa->stfa_it = SDL_MintAudio_StfaInterrupt;
+    /* Set interrupt */
+    cookie_stfa->stfa_it = SDL_MintAudio_StfaInterrupt;
 
-	/* Restart replay */
-	cookie_stfa->sound_enable=STFA_PLAY_ENABLE|STFA_PLAY_REPEAT;
+    /* Restart replay */
+    cookie_stfa->sound_enable = STFA_PLAY_ENABLE | STFA_PLAY_REPEAT;
 
-	Super(oldpile);
+    Super (oldpile);
 
-	DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
+    DEBUG_PRINT ((DEBUG_NAME "hardware initialized\n"));
 }
 
-static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec)
+static int
+Mint_OpenAudio (_THIS, SDL_AudioSpec * spec)
 {
-	SDL_MintAudio_device = this;
+    SDL_MintAudio_device = this;
 
-	/* Check audio capabilities */
-	if (Mint_CheckAudio(this, spec)==-1) {
-		return -1;
-	}
+    /* Check audio capabilities */
+    if (Mint_CheckAudio (this, spec) == -1) {
+        return -1;
+    }
 
-	SDL_CalculateAudioSpec(spec);
+    SDL_CalculateAudioSpec (spec);
 
-	/* Allocate memory for audio buffers in DMA-able RAM */
-	DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size));
+    /* 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 threaded audio */
+    return (1);                 /* We don't use threaded audio */
 }
+
+/* vi: set ts=4 sw=4 expandtab: */