//设置播放通知，一般用处有二：
//1. 通知程序写入下一段声音数据
//2. 通知做某一个操作
HRESULT SetStopNotification(HANDLE hEvent, LPDIRECTSOUNDBUFFER8 lpDsbSecondary){
LPDIRECTSOUNDNOTIFY8 lpDsNotify;
DSBPOSITIONNOTIFY PositionNotify;
HRESULT hr;
if (SUCCEEDED(hr =
lpDsbSecondary->QueryInterface(IID_IDirectSoundNotify8, (LPVOID*)lpDsNotify)
)){
PositionNotify.dwOffset = DSBPN_OFFSETSTOP;
PositionNotify.hEventNotify = hEvent;
hr = lpDsNotify->SetNotificationPositions(1, &PositionNotify);
lpDsNotify->Release();
}
return hr;
}
/**
* @brief Configures the replay buffer so that at appropriate positions of replay, a notification is sent.
* @details
* @param[in] p_secondary_buffer
* @param[in] notify_array
* @param[in] notify_array_count
* @return
*/
static HRESULT set_play_notifications(LPDIRECTSOUNDBUFFER8 p_secondary_buffer,
DSBPOSITIONNOTIFY * notify_array,
size_t notify_array_count)
{
HRESULT hr;
LPDIRECTSOUNDNOTIFY8 p_notify_itf = NULL;
hr = p_secondary_buffer->QueryInterface(IID_IDirectSoundNotify8, (LPVOID*)&p_notify_itf);
if (SUCCEEDED(hr))
{
hr = p_notify_itf->SetNotificationPositions(notify_array_count, notify_array);
p_notify_itf->Release();
debug_outputln("%4.4u %s : 0x%8.8x %u", __LINE__, __FILE__, hr, notify_array_count);
for (size_t idx = 0; idx < notify_array_count; ++idx)
{
debug_outputln("%4.4u %s : 0x%8.8x %u", __LINE__, __FILE__, notify_array[idx].hEventNotify, notify_array[idx].dwOffset);
}
}
return hr;
}