Пример #1
0
//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;
}
Пример #2
0
/**
 * @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;
}