Mercurial > sdl-ios-xcode
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: */