Implement VideoInputFormatChanged support

lu-zero / bmdtools

Basic capture and play programs for Blackmagic Design Decklink

Boost Software License 1.0

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Implement VideoInputFormatChanged support #36

Open lu-zero opened 10 years ago

lu-zero commented 10 years ago

This way should be possible to guess the video input.

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lu-zero commented 10 years ago

As per the SDK documentation you have to

Implement the VideoInputFormatChanged callback
Check if BMDDeckLinkSupportsInputFormatDetection is true
Pass bmdVideoInputEnableFormatDetection to EnableVideoInput()
Start to frame capture and wait for signal
Configure to use the correct video input.

Once that is done given that bmdcapture cannot support mid-stream changes it needs to reconfigure as usual again and starts capturing normally.