void fluid_win32_destroy_window(void)
{
HWND hwnd = fluid_win32_get_window();
if (hwnd) {
DestroyWindow(hwnd);
fluid_wnd = 0;
}
}
/*
* new_fluid_dsound_audio_driver
*/
fluid_audio_driver_t*
new_fluid_dsound_audio_driver(fluid_settings_t* settings, fluid_synth_t* synth)
{
HRESULT hr;
DSBUFFERDESC desc;
fluid_dsound_audio_driver_t* dev = NULL;
DSCAPS caps;
char *buf1;
DWORD bytes1;
double sample_rate;
int periods, period_size;
fluid_dsound_devsel_t devsel;
/* check if the globals are initialized */
if (FLUID_HINSTANCE == NULL) {
FLUID_LOG(FLUID_ERR, "FluidSynth hinstance not set, which is needed for DirectSound");
return NULL;
}
/*
if (fluid_wnd == NULL) {
if (fluid_win32_create_window() != 0) {
FLUID_LOG(FLUID_ERR, "Couldn't create window needed for DirectSound");
return NULL;
}
}
*/
/* create and clear the driver data */
dev = FLUID_NEW(fluid_dsound_audio_driver_t);
if (dev == NULL) {
FLUID_LOG(FLUID_ERR, "Out of memory");
return NULL;
}
FLUID_MEMSET(dev, 0, sizeof(fluid_dsound_audio_driver_t));
dev->synth = synth;
dev->cont = 1;
fluid_settings_getnum(settings, "synth.sample-rate", &sample_rate);
fluid_settings_getint(settings, "audio.periods", &periods);
fluid_settings_getint(settings, "audio.period-size", &period_size);
/* check the format */
if (!fluid_settings_str_equal(settings, "audio.sample-format", "16bits")) {
FLUID_LOG(FLUID_ERR, "Unhandled sample format");
goto error_recovery;
}
dev->frame_size = 2 * sizeof(short);
dev->buffer_byte_size = period_size * dev->frame_size;
dev->queue_byte_size = periods * dev->buffer_byte_size;
dev->write = fluid_synth_write_s16;
/* create and initialize the buffer format */
dev->format = (WAVEFORMATEX*) FLUID_MALLOC(sizeof(WAVEFORMATEX));
if (dev->format == NULL) {
FLUID_LOG(FLUID_ERR, "Out of memory");
goto error_recovery;
}
ZeroMemory(dev->format, sizeof(WAVEFORMATEX));
dev->format->wFormatTag = WAVE_FORMAT_PCM;
dev->format->nChannels = 2;
dev->format->wBitsPerSample = 16;
dev->format->nSamplesPerSec = (DWORD) sample_rate;
dev->format->nBlockAlign = (WORD) dev->frame_size;
dev->format->nAvgBytesPerSec = dev->format->nSamplesPerSec * dev->frame_size;
dev->format->cbSize = 0;
devsel.devGUID = NULL;
/* get the selected device name. if none is specified, use NULL for the default device. */
if(fluid_settings_dupstr(settings, "audio.dsound.device", &devsel.devname) == FLUID_OK /* ++ alloc device name */
&& devsel.devname && strlen (devsel.devname) > 0) {
/* look for the GUID of the selected device */
DirectSoundEnumerate((LPDSENUMCALLBACK) fluid_dsound_enum_callback2, (void *)&devsel);
}
if (devsel.devname) FLUID_FREE (devsel.devname); /* -- free device name */
/* open DirectSound */
hr = DirectSoundCreate(devsel.devGUID, &dev->direct_sound, NULL);
if (hr != DS_OK) {
FLUID_LOG(FLUID_ERR, "Failed to create the DirectSound object");
goto error_recovery;
}
hr = IDirectSound_SetCooperativeLevel(dev->direct_sound, fluid_win32_get_window(), DSSCL_PRIORITY);
if (hr != DS_OK) {
FLUID_LOG(FLUID_ERR, "Failed to set the cooperative level");
goto error_recovery;
}
caps.dwSize = sizeof(caps);
hr = IDirectSound_GetCaps(dev->direct_sound, &caps);
if (hr != DS_OK) {
FLUID_LOG(FLUID_ERR, "Failed to query the device capacities");
goto error_recovery;
}
/* create primary buffer */
ZeroMemory(&desc, sizeof(DSBUFFERDESC));
desc.dwSize = sizeof(DSBUFFERDESC);
desc.dwFlags = DSBCAPS_PRIMARYBUFFER;
if (caps.dwFreeHwMixingStreamingBuffers > 0) {
desc.dwFlags |= DSBCAPS_LOCHARDWARE;
}
hr = IDirectSound_CreateSoundBuffer(dev->direct_sound, &desc, &dev->prim_buffer, NULL);
if (hr != DS_OK) {
FLUID_LOG(FLUID_ERR, "Failed to allocate the primary buffer");
goto error_recovery;
}
/* set the primary sound buffer to this format. if it fails, just
print a warning. */
hr = IDirectSoundBuffer_SetFormat(dev->prim_buffer, dev->format);
if (hr != DS_OK) {
FLUID_LOG(FLUID_WARN, "Can't set format of primary sound buffer", fluid_win32_error(hr));
}
/* initialize the buffer description */
ZeroMemory(&desc, sizeof(DSBUFFERDESC));
desc.dwSize = sizeof(DSBUFFERDESC);
desc.dwFlags = DSBCAPS_GLOBALFOCUS | DSBCAPS_GETCURRENTPOSITION2;
desc.lpwfxFormat = dev->format;
desc.dwBufferBytes = dev->queue_byte_size;
desc.dwReserved = 0;
if (caps.dwFreeHwMixingStreamingBuffers > 0) {
desc.dwFlags |= DSBCAPS_LOCHARDWARE;
}
/* create the secondary sound buffer */
hr = IDirectSound_CreateSoundBuffer(dev->direct_sound, &desc, &dev->sec_buffer, NULL);
if (hr != DS_OK) {
FLUID_LOG(FLUID_ERR, "dsound: Can't create sound buffer: %s", fluid_win32_error(hr));
goto error_recovery;
}
/* Lock */
hr = IDirectSoundBuffer_Lock(dev->sec_buffer, 0, 0, (void*) &buf1, &bytes1, 0, 0, DSBLOCK_ENTIREBUFFER);
if ((hr != DS_OK) || (buf1 == NULL)) {
FLUID_LOG(FLUID_PANIC, "Failed to lock the audio buffer. Exiting.");
goto error_recovery;
}
/* fill the buffer with silence */
memset(buf1, 0, bytes1);
/* Unlock */
IDirectSoundBuffer_Unlock(dev->sec_buffer, buf1, bytes1, 0, 0);
/* start the audio thread */
dev->thread = CreateThread(NULL, 0, &fluid_dsound_audio_run, (LPVOID) dev, 0, &dev->threadID);
if (dev->thread == NULL) {
goto error_recovery;
}
return (fluid_audio_driver_t*) dev;
error_recovery:
delete_fluid_dsound_audio_driver((fluid_audio_driver_t*) dev);
return NULL;
}