Uint32 _buffering_unit=1;
uint32 _buffering_unit=1;
static	size_t calc_sample_buffer(Uint16 _samplerate){	Uint32 _buffering_unit=1;	while(_buffering_unit<_samplerate/10U)		_buffering_unit<<=1;	// _buffering_unit=128;	return _buffering_unit;}