コード例 #1
0
ファイル: dsound.c プロジェクト: jonakino/RetroArch
static bool dsound_start(void *data)
{
   dsound_t *ds = (dsound_t*)data;
   dsound_clear_buffer(ds);

   if (!dsound_start_thread(ds))
      return false;

   return IDirectSoundBuffer_Play(ds->dsb, 0, 0, DSBPLAY_LOOPING) == DS_OK;
}
コード例 #2
0
ファイル: dsound.c プロジェクト: Alcaro/RetroArch
static bool dsound_start(void *data, bool is_shutdown)
{
   dsound_t *ds = (dsound_t*)data;

   dsound_clear_buffer(ds);

   if (!dsound_start_thread(ds))
      return false;

   ds->is_paused = (IDirectSoundBuffer_Play(
            ds->dsb, 0, 0, DSBPLAY_LOOPING) == DS_OK) ? false : true;
   return (ds->is_paused) ? false : true;
}
コード例 #3
0
ファイル: dsound.c プロジェクト: Joonie86/RetroArch
static void *dsound_init(const char *device, unsigned rate, unsigned latency)
{
   WAVEFORMATEX wfx      = {0};
   DSBUFFERDESC bufdesc  = {0};
   struct dsound_dev dev = {0};
   dsound_t          *ds = (dsound_t*)calloc(1, sizeof(*ds));

   if (!ds)
      goto error;

   InitializeCriticalSection(&ds->crit);

   if (device)
      dev.device = strtoul(device, NULL, 0);

   RARCH_LOG("DirectSound devices:\n");
#ifndef _XBOX
   DirectSoundEnumerate(enumerate_cb, &dev);
#endif

   if (DirectSoundCreate(dev.guid, &ds->ds, NULL) != DS_OK)
      goto error;

#ifndef _XBOX
   if (IDirectSound_SetCooperativeLevel(ds->ds, GetDesktopWindow(), DSSCL_PRIORITY) != DS_OK)
      goto error;
#endif

   wfx.wFormatTag        = WAVE_FORMAT_PCM;
   wfx.nChannels         = 2;
   wfx.nSamplesPerSec    = rate;
   wfx.wBitsPerSample    = 16;
   wfx.nBlockAlign       = 2 * sizeof(int16_t);
   wfx.nAvgBytesPerSec   = rate * 2 * sizeof(int16_t);

   ds->buffer_size       = (latency * wfx.nAvgBytesPerSec) / 1000;
   ds->buffer_size      /= CHUNK_SIZE;
   ds->buffer_size      *= CHUNK_SIZE;
   if (ds->buffer_size < 4 * CHUNK_SIZE)
      ds->buffer_size    = 4 * CHUNK_SIZE;

   RARCH_LOG("[DirectSound]: Setting buffer size of %u bytes\n", ds->buffer_size);
   RARCH_LOG("[DirectSound]: Latency = %u ms\n", (unsigned)((1000 * ds->buffer_size) / wfx.nAvgBytesPerSec));

   bufdesc.dwSize        = sizeof(DSBUFFERDESC);
   bufdesc.dwFlags       = 0;
#ifndef _XBOX
   bufdesc.dwFlags       = DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_GLOBALFOCUS;
#endif
   bufdesc.dwBufferBytes = ds->buffer_size;
   bufdesc.lpwfxFormat   = &wfx;

   ds->event = CreateEvent(NULL, false, false, NULL);
   if (!ds->event)
      goto error;

   ds->buffer = fifo_new(4 * 1024);
   if (!ds->buffer)
      goto error;

   if (IDirectSound_CreateSoundBuffer(ds->ds, &bufdesc, &ds->dsb, 0) != DS_OK)
      goto error;

   IDirectSoundBuffer_SetVolume(ds->dsb, DSBVOLUME_MAX);
   IDirectSoundBuffer_SetCurrentPosition(ds->dsb, 0);

   dsound_clear_buffer(ds);

   if (IDirectSoundBuffer_Play(ds->dsb, 0, 0, DSBPLAY_LOOPING) != DS_OK)
      goto error;

   if (!dsound_start_thread(ds))
      goto error;

   return ds;

error:
   RARCH_ERR("[DirectSound] Error occured in init.\n");
   dsound_free(ds);
   return NULL;
}