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Adjusting Pitch/Stride

acc3141
Beginner
‎02-29-2012 08:04 AM
435 Views
I am writing a Directshow H264 decoder using the IPP. The downstream renderer will often require a different pitch. When using YUV formats (YV12 in my case) Ifound through a mix of educated guesses and experimentation thatthe following code worked.

VideoData DataOut;
....
// if new stride proposed by downstream filter...

DataOut.SetPlanePitch(m_pitch/2, 2);
DataOut.SetPlanePitch(m_pitch/2, 1);
DataOut.SetPlanePitch(m_pitch, 0);

RGB24 on the other hand has only one plane.

Is there a 'cleaner' i.e. more general way to know how to do this based on the type? Is this documented anywhere?

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