public static extern bool WaveformPlayerOutputPPGEx(ref PLAY_RAW_DATA ppgChanel1Data, ref PLAY_RAW_DATA ppgChanel2Data);
public static extern bool WaveformPlayerOutputECGAndPPG(ref PLAY_RAW_DATA ecgData, PPGChannel channelNo, ref PLAY_RAW_DATA ppgData);
public static extern bool WaveformPlayerOutputPPG(PPGChannel channelNo, ref PLAY_RAW_DATA ppgData);
public static extern bool WaveformPlayerOutputECG(ref PLAY_RAW_DATA data);