static int
MINTSTFA_CheckAudio(_THIS)
{
int i;
DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",
SDL_AUDIO_BITSIZE(this->spec.format)));
DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format)));
DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format)));
DEBUG_PRINT(("big endian=%d, ",
SDL_AUDIO_ISBIGENDIAN(this->spec.format)));
DEBUG_PRINT(("channels=%d, ", this->spec.channels));
DEBUG_PRINT(("freq=%d\n", this->spec.freq));
if (SDL_AUDIO_BITSIZE(this->spec.format) > 16) {
this->spec.format = AUDIO_S16SYS; /* clamp out int32/float32 ... */
}
if (this->spec.channels > 2) {
this->spec.channels = 2; /* no more than stereo! */
}
/* 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));
}
#endif
MINTAUDIO_numfreq = SDL_MintAudio_SearchFrequency(this, this->spec.freq);
this->spec.freq = MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency;
DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",
SDL_AUDIO_BITSIZE(this->spec.format)));
DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format)));
DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format)));
DEBUG_PRINT(("big endian=%d, ",
SDL_AUDIO_ISBIGENDIAN(this->spec.format)));
DEBUG_PRINT(("channels=%d, ", this->spec.channels));
DEBUG_PRINT(("freq=%d\n", this->spec.freq));
return 0;
}
static void
MINTSTFA_InitAudio(_THIS)
{
void *buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
void *oldpile = (void *) Super(0);
/* Stop replay */
cookie_stfa->sound_enable = STFA_PLAY_DISABLE;
/* Select replay format */
cookie_stfa->sound_control =
MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
if (SDL_AUDIO_BITSIZE(this->spec.format) == 8) {
cookie_stfa->sound_control |= STFA_FORMAT_8BIT;
} else {
cookie_stfa->sound_control |= STFA_FORMAT_16BIT;
}
if (this->spec.channels == 2) {
cookie_stfa->sound_control |= STFA_FORMAT_STEREO;
} else {
cookie_stfa->sound_control |= STFA_FORMAT_MONO;
}
if (SDL_AUDIO_ISSIGNED(this->spec.format) != 0) {
cookie_stfa->sound_control |= STFA_FORMAT_SIGNED;
} else {
cookie_stfa->sound_control |= STFA_FORMAT_UNSIGNED;
}
if (SDL_AUDIO_ISBIGENDIAN(this->spec.format) != 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 + this->spec.size);
/* Set interrupt */
cookie_stfa->stfa_it = SDL_MintAudio_StfaInterrupt;
/* Restart replay */
cookie_stfa->sound_enable = STFA_PLAY_ENABLE | STFA_PLAY_REPEAT;
Super(oldpile);
DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
}
static int
SNDIO_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
{
SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
struct sio_par par;
int status;
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc(sizeof(*this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, sizeof(*this->hidden));
this->hidden->mixlen = this->spec.size;
/* !!! FIXME: SIO_DEVANY can be a specific device... */
if ((this->hidden->dev = SNDIO_sio_open(SIO_DEVANY, SIO_PLAY, 0)) == NULL) {
SNDIO_CloseDevice(this);
return SDL_SetError("sio_open() failed");
}
SNDIO_sio_initpar(&par);
par.rate = this->spec.freq;
par.pchan = this->spec.channels;
par.round = this->spec.samples;
par.appbufsz = par.round * 2;
/* Try for a closest match on audio format */
status = -1;
while (test_format && (status < 0)) {
if (!SDL_AUDIO_ISFLOAT(test_format)) {
par.le = SDL_AUDIO_ISLITTLEENDIAN(test_format) ? 1 : 0;
par.sig = SDL_AUDIO_ISSIGNED(test_format) ? 1 : 0;
par.bits = SDL_AUDIO_BITSIZE(test_format);
if (SNDIO_sio_setpar(this->hidden->dev, &par) == 0) {
continue;
}
if (SNDIO_sio_getpar(this->hidden->dev, &par) == 0) {
SNDIO_CloseDevice(this);
return SDL_SetError("sio_getpar() failed");
}
if (par.bps != SIO_BPS(par.bits)) {
continue;
}
if ((par.bits == 8 * par.bps) || (par.msb)) {
status = 0;
break;
}
}
test_format = SDL_NextAudioFormat();
}
if (status < 0) {
SNDIO_CloseDevice(this);
return SDL_SetError("sndio: Couldn't find any hardware audio formats");
}
if ((par.bps == 4) && (par.sig) && (par.le))
this->spec.format = AUDIO_S32LSB;
else if ((par.bps == 4) && (par.sig) && (!par.le))
this->spec.format = AUDIO_S32MSB;
else if ((par.bps == 2) && (par.sig) && (par.le))
this->spec.format = AUDIO_S16LSB;
else if ((par.bps == 2) && (par.sig) && (!par.le))
this->spec.format = AUDIO_S16MSB;
else if ((par.bps == 2) && (!par.sig) && (par.le))
this->spec.format = AUDIO_U16LSB;
else if ((par.bps == 2) && (!par.sig) && (!par.le))
this->spec.format = AUDIO_U16MSB;
else if ((par.bps == 1) && (par.sig))
this->spec.format = AUDIO_S8;
else if ((par.bps == 1) && (!par.sig))
this->spec.format = AUDIO_U8;
else {
SNDIO_CloseDevice(this);
return SDL_SetError("sndio: Got unsupported hardware audio format.");
}
this->spec.freq = par.rate;
this->spec.channels = par.pchan;
this->spec.samples = par.round;
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
SNDIO_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->hidden->mixlen);
if (!SNDIO_sio_start(this->hidden->dev)) {
return SDL_SetError("sio_start() failed");
}
/* We're ready to rock and roll. :-) */
return 0;
}
static int
COREAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
{
fprintf(stderr, "OpenDevice\n");
AudioStreamBasicDescription strdesc;
SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
int valid_datatype = 0;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
SDL_OutOfMemory();
fprintf(stderr, "OutOfMemory\n");
return (0);
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Setup a AudioStreamBasicDescription with the requested format */
SDL_memset(&strdesc, '\0', sizeof(AudioStreamBasicDescription));
strdesc.mFormatID = kAudioFormatLinearPCM;
strdesc.mFormatFlags = kLinearPCMFormatFlagIsPacked;
strdesc.mChannelsPerFrame = this->spec.channels;
strdesc.mSampleRate = this->spec.freq;
strdesc.mFramesPerPacket = 1;
while ((!valid_datatype) && (test_format)) {
this->spec.format = test_format;
/* Just a list of valid SDL formats, so people don't pass junk here. */
switch (test_format) {
case AUDIO_U8:
case AUDIO_S8:
case AUDIO_U16LSB:
case AUDIO_S16LSB:
case AUDIO_U16MSB:
case AUDIO_S16MSB:
case AUDIO_S32LSB:
case AUDIO_S32MSB:
case AUDIO_F32LSB:
case AUDIO_F32MSB:
valid_datatype = 1;
strdesc.mBitsPerChannel = SDL_AUDIO_BITSIZE(this->spec.format);
if (SDL_AUDIO_ISBIGENDIAN(this->spec.format))
strdesc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
if (SDL_AUDIO_ISFLOAT(this->spec.format))
strdesc.mFormatFlags |= kLinearPCMFormatFlagIsFloat;
else if (SDL_AUDIO_ISSIGNED(this->spec.format))
strdesc.mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger;
break;
}
}
if (!valid_datatype) { /* shouldn't happen, but just in case... */
COREAUDIO_CloseDevice(this);
fprintf(stderr, "Unsupported audio format\n");
return 0;
}
strdesc.mBytesPerFrame =
strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
strdesc.mBytesPerPacket =
strdesc.mBytesPerFrame * strdesc.mFramesPerPacket;
if (!prepare_audiounit(this, devname, iscapture, &strdesc)) {
COREAUDIO_CloseDevice(this);
fprintf(stderr, "prepare_audiounit failed\n");
return 0; /* prepare_audiounit() will call SDL_SetError()... */
}
return 1; /* good to go. */
}
SDL2SoundCore::SDL2SoundCore(
SoundMixerTypes::SoundMixerType soundMixerType__,
SoundStateTypes::SoundStateType soundStateType__)
: SoundCore(soundMixerType__,
soundStateType__),
device(0) {
// Initialize the audio device
desired.freq = desiredFreq;
desired.format = desiredFormat;
desired.channels = desiredChannels;
desired.samples = desiredSamples;
desired.callback = audioCallback;
desired.userdata = state_;
/* std::cout << "desired" << std::endl;
std::cout << "freq: " << desired.freq << std::endl;
std::cout << "format: " << desired.format << std::endl;
std::cout << "channels: " << desired.channels << std::endl;
std::cout << "samples: " << desired.samples << std::endl; */
device = SDL_OpenAudioDevice(NULL,
0,
&desired,
&obtained,
SDL_AUDIO_ALLOW_ANY_CHANGE);
/* if (device == 0) {
std::cerr << "error" << std::endl;
}
else {
std::cout << "obtained" << std::endl;
std::cout << "freq: " << obtained.freq << std::endl;
std::cout << "format: " << obtained.format << std::endl;
std::cout << "channels: " << obtained.channels << std::endl;
std::cout << "samples: " << obtained.samples << std::endl;
} */
// Translate format settings
SignednessTypes::SignednessType dataSignedness = SignednessTypes::nosign;
if ( SDL_AUDIO_ISSIGNED( desired.format ) ) {
dataSignedness = SignednessTypes::sign;
}
EndiannessTypes::EndiannessType dataEndianness = EndiannessTypes::little;
if ( SDL_AUDIO_ISBIGENDIAN( desired.format ) ) {
dataEndianness = EndiannessTypes::big;
}
// Initialize the mixer
state_->mixer().initialize(obtained.samples,
desiredChannels, // channels
// (SDL doesn't seem to record this correctly?)
dataSignedness, // signedness
dataEndianness, // endianness
(desired.format
& SDL_AUDIO_MASK_BITSIZE) / 8, // bytes per sample
desired.freq); // frequency
SDL_PauseAudioDevice(device, 0);
}
