for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
{
if( p_input->p_fmt->audio.i_physical_channels & pi_channels_src[i])
for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
{
if( p_input->p_fmt->audio.i_physical_channels & pi_channels_src[i])