if( p_sys->i_rate > 0 && p_sys->i_channels > 0 )
{
result = p_sys->p_input->EnableAudioInput( p_sys->i_rate, bmdAudioSampleType16bitInteger, p_sys->i_channels );
if( p_sys->i_rate > 0 && p_sys->i_channels > 0 )
{
result = p_sys->p_input->EnableAudioInput( p_sys->i_rate, bmdAudioSampleType16bitInteger, p_sys->i_channels );