static int DX5_OpenAudio(_THIS, SDL_AudioSpec *spec)
{
HRESULT result;
WAVEFORMATEX waveformat;
/* Set basic WAVE format parameters */
memset(&waveformat, 0, sizeof(waveformat));
waveformat.wFormatTag = WAVE_FORMAT_PCM;
/* Determine the audio parameters from the AudioSpec */
switch ( spec->format & 0xFF ) {
case 8:
/* Unsigned 8 bit audio data */
spec->format = AUDIO_U8;
silence = 0x80;
waveformat.wBitsPerSample = 8;
break;
case 16:
/* Signed 16 bit audio data */
spec->format = AUDIO_S16;
silence = 0x00;
waveformat.wBitsPerSample = 16;
break;
default:
SDL_SetError("Unsupported audio format");
return(-1);
}
waveformat.nChannels = spec->channels;
waveformat.nSamplesPerSec = spec->freq;
waveformat.nBlockAlign =
waveformat.nChannels * (waveformat.wBitsPerSample/8);
waveformat.nAvgBytesPerSec =
waveformat.nSamplesPerSec * waveformat.nBlockAlign;
/* Update the fragment size as size in bytes */
SDL_CalculateAudioSpec(spec);
/* Open the audio device */
result = DSoundCreate(NULL, &sound, NULL);
if ( result != DS_OK ) {
SetDSerror("DirectSoundCreate", result);
return(-1);
}
/* Create the audio buffer to which we write */
NUM_BUFFERS = -1;
#ifdef USE_PRIMARY_BUFFER
if ( mainwin ) {
NUM_BUFFERS = CreatePrimary(sound, mainwin, &mixbuf,
&waveformat, spec->size);
}
#endif /* USE_PRIMARY_BUFFER */
if ( NUM_BUFFERS < 0 ) {
NUM_BUFFERS = CreateSecondary(sound, mainwin, &mixbuf,
&waveformat, spec->size);
if ( NUM_BUFFERS < 0 ) {
return(-1);
}
#ifdef DEBUG_SOUND
fprintf(stderr, "Using secondary audio buffer\n");
#endif
}
#ifdef DEBUG_SOUND
else
fprintf(stderr, "Using primary audio buffer\n");
#endif
/* The buffer will auto-start playing in DX5_WaitAudio() */
playing = 0;
mixlen = spec->size;
#ifdef USE_POSITION_NOTIFY
/* See if we can use DirectX 6 event notification */
if ( CreateAudioEvent(this) == 0 ) {
this->WaitAudio = DX6_WaitAudio_EventWait;
} else {
this->WaitAudio = DX5_WaitAudio_BusyWait;
}
#endif
return(0);
}
static int
DSOUND_OpenDevice(_THIS, const char *devname, int iscapture)
{
HRESULT result;
WAVEFORMATEX waveformat;
int valid_format = 0;
SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
/* !!! FIXME: handle devname */
/* !!! FIXME: handle iscapture */
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
SDL_OutOfMemory();
return 0;
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
while ((!valid_format) && (test_format)) {
switch (test_format) {
case AUDIO_U8:
case AUDIO_S16:
case AUDIO_S32:
this->spec.format = test_format;
valid_format = 1;
break;
}
test_format = SDL_NextAudioFormat();
}
if (!valid_format) {
DSOUND_CloseDevice(this);
SDL_SetError("DirectSound: Unsupported audio format");
return 0;
}
SDL_memset(&waveformat, 0, sizeof(waveformat));
waveformat.wFormatTag = WAVE_FORMAT_PCM;
waveformat.wBitsPerSample = SDL_AUDIO_BITSIZE(this->spec.format);
waveformat.nChannels = this->spec.channels;
waveformat.nSamplesPerSec = this->spec.freq;
waveformat.nBlockAlign =
waveformat.nChannels * (waveformat.wBitsPerSample / 8);
waveformat.nAvgBytesPerSec =
waveformat.nSamplesPerSec * waveformat.nBlockAlign;
/* Update the fragment size as size in bytes */
SDL_CalculateAudioSpec(&this->spec);
/* Open the audio device */
result = DSoundCreate(NULL, &this->hidden->sound, NULL);
if (result != DS_OK) {
DSOUND_CloseDevice(this);
SetDSerror("DirectSoundCreate", result);
return 0;
}
/* Create the audio buffer to which we write */
this->hidden->num_buffers = CreateSecondary(this, mainwin, &waveformat);
if (this->hidden->num_buffers < 0) {
DSOUND_CloseDevice(this);
return 0;
}
/* The buffer will auto-start playing in DSOUND_WaitDevice() */
this->hidden->mixlen = this->spec.size;
return 1; /* good to go. */
}
bool DirectSound::init()
{
HRESULT hr;
dsoundDLL = LoadLibrary("DSOUND.DLL");
HRESULT (WINAPI *DSoundCreate)(LPCGUID,LPDIRECTSOUND *,IUnknown *);
if(dsoundDLL != NULL) {
DSoundCreate = (HRESULT (WINAPI *)(LPCGUID,LPDIRECTSOUND *,IUnknown *))
GetProcAddress(dsoundDLL, "DirectSoundCreate");
if(DSoundCreate == NULL) {
theApp.directXMessage("DirectSoundCreate");
return false;
}
} else {
theApp.directXMessage("DSOUND.DLL");
return false;
}
if((hr = DSoundCreate(NULL,&pDirectSound,NULL) != DS_OK)) {
// errorMessage(myLoadString(IDS_ERROR_SOUND_CREATE), hr);
systemMessage(IDS_CANNOT_CREATE_DIRECTSOUND,
"Cannot create DirectSound %08x", hr);
pDirectSound = NULL;
dsbSecondary = NULL;
return false;
}
if((hr=pDirectSound->SetCooperativeLevel((HWND)*theApp.m_pMainWnd,
DSSCL_EXCLUSIVE)) != DS_OK) {
// errorMessage(myLoadString(IDS_ERROR_SOUND_LEVEL), hr);
systemMessage(IDS_CANNOT_SETCOOPERATIVELEVEL,
"Cannot SetCooperativeLevel %08x", hr);
return false;
}
DSBUFFERDESC dsbdesc;
ZeroMemory(&dsbdesc,sizeof(DSBUFFERDESC));
dsbdesc.dwSize=sizeof(DSBUFFERDESC);
dsbdesc.dwFlags = DSBCAPS_PRIMARYBUFFER;
if((hr=pDirectSound->CreateSoundBuffer(&dsbdesc,
&dsbPrimary,
NULL) != DS_OK)) {
// errorMessage(myLoadString(IDS_ERROR_SOUND_BUFFER),hr);
systemMessage(IDS_CANNOT_CREATESOUNDBUFFER,
"Cannot CreateSoundBuffer %08x", hr);
return false;
}
// Set primary buffer format
memset(&wfx, 0, sizeof(WAVEFORMATEX));
wfx.wFormatTag = WAVE_FORMAT_PCM;
wfx.nChannels = 2;
switch(soundQuality) {
case 2:
wfx.nSamplesPerSec = 22050;
soundBufferLen = 736*2;
soundBufferTotalLen = 7360*2;
break;
case 4:
wfx.nSamplesPerSec = 11025;
soundBufferLen = 368*2;
soundBufferTotalLen = 3680*2;
break;
default:
soundQuality = 1;
wfx.nSamplesPerSec = 44100;
soundBufferLen = 1470*2;
soundBufferTotalLen = 14700*2;
}
wfx.wBitsPerSample = 16;
wfx.nBlockAlign = (wfx.wBitsPerSample / 8) * wfx.nChannels;
wfx.nAvgBytesPerSec = wfx.nSamplesPerSec * wfx.nBlockAlign;
if((hr = dsbPrimary->SetFormat(&wfx)) != DS_OK) {
// errorMessage(myLoadString(IDS_ERROR_SOUND_PRIMARY),hr);
systemMessage(IDS_CANNOT_SETFORMAT_PRIMARY,
"Cannot SetFormat for primary %08x", hr);
return false;
}
ZeroMemory(&dsbdesc,sizeof(DSBUFFERDESC));
dsbdesc.dwSize = sizeof(DSBUFFERDESC);
dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2|DSBCAPS_CTRLPOSITIONNOTIFY;
dsbdesc.dwBufferBytes = soundBufferTotalLen;
dsbdesc.lpwfxFormat = &wfx;
if((hr = pDirectSound->CreateSoundBuffer(&dsbdesc, &dsbSecondary, NULL))
!= DS_OK) {
dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2;
if((hr = pDirectSound->CreateSoundBuffer(&dsbdesc, &dsbSecondary, NULL))
!= DS_OK) {
systemMessage(IDS_CANNOT_CREATESOUNDBUFFER_SEC,
"Cannot CreateSoundBuffer secondary %08x", hr);
return false;
}
}
dsbSecondary->SetCurrentPosition(0);
if(!theApp.useOldSync) {
hr = dsbSecondary->QueryInterface(IID_IDirectSoundNotify,
(void **)&dsbNotify);
if(!FAILED(hr)) {
dsbEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
DSBPOSITIONNOTIFY notify[10];
for(int i = 0; i < 10; i++) {
notify[i].dwOffset = i*soundBufferLen;
notify[i].hEventNotify = dsbEvent;
}
if(FAILED(dsbNotify->SetNotificationPositions(10, notify))) {
dsbNotify->Release();
dsbNotify = NULL;
CloseHandle(dsbEvent);
dsbEvent = NULL;
}
}
}
hr = dsbPrimary->Play(0,0,DSBPLAY_LOOPING);
if(hr != DS_OK) {
// errorMessage(myLoadString(IDS_ERROR_SOUND_PLAYPRIM), hr);
systemMessage(IDS_CANNOT_PLAY_PRIMARY, "Cannot Play primary %08x", hr);
return false;
}
systemSoundOn = true;
return true;
}
