public int GetDuration()
{
if (m_CurrentState == MEDIAPLAYER_STATE.PLAYING || m_CurrentState == MEDIAPLAYER_STATE.PAUSED || m_CurrentState == MEDIAPLAYER_STATE.END || m_CurrentState == MEDIAPLAYER_STATE.READY || m_CurrentState == MEDIAPLAYER_STATE.STOPPED)
return Call_GetDuration();
else
return 0;
}