FillNextBuffer
BBuffer* FillNextBuffer( multi_buffer_info &MBI,
BBuffer* buffer = channel.FillNextBuffer(BufferDuration());
BBuffer* buffer = FillNextBuffer(event->event_time);
BBuffer* FillNextBuffer(bigtime_t event_time);
BBuffer* buffer = FillNextBuffer(event->event_time);
BBuffer* FillNextBuffer(bigtime_t event_time);
BBuffer* buffer = FillNextBuffer(event->event_time);
BBuffer* FillNextBuffer(bigtime_t eventTime);