SetBufferDuration
void SetBufferDuration(bigtime_t duration);
SetBufferDuration(duration);
SetBufferDuration(duration);
SetBufferDuration(buffer_duration(io_format->u.raw_audio));
SetBufferDuration(buffer_duration(format.u.raw_audio));
SetBufferDuration(duration);
SetBufferDuration(duration);
SetBufferDuration(fBufferPeriod);
SetBufferDuration(duration);
SetBufferDuration(duration);
SetBufferDuration(
SetBufferDuration(
SetBufferDuration(duration);
SetBufferDuration(duration);
SetBufferDuration(duration);
SetBufferDuration((1000000LL * numBuffers) / mOutput.format.u.raw_video.field_rate);