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Mimic Exif hierarchy in CRX #224

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PushDirectory(new T());
var directory = new T
{
Parent = Directories.OfType<TParent>().FirstOrDefault()
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This is prone to selecting the wrong parent. The first one might not be the correct one. I would suggest adding the parent directory as a constructor parameter, storing it in a field, then adding it here.

You can then remove the TParent type parameter.

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You mean an additional directory stack in QucikTimeMetadataReader? I'm not sure if adding state to the latter is better than the current solution.

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Isn't SetTiffMarker only called once? I don't think a stack is needed.

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I meant the state would be in this class (QuickTimeTiffHandler).

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@dmitry-shechtman dmitry-shechtman Sep 20, 2019

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The reader encounters the atoms in order:

  • CMT1
  • CMT2
  • CMT3
  • CMT4

For each of those, a new ITiffHandler instance is created, meaning a directory stack created from scratch every time.

N.B. I don't see a scenario in which more than one IFD0 directory exists (at least at this stage).

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Thanks for clarifying. I still feel it should be possible to pass the parent forward somehow rather than looking it up, but will have to pull down your branch to play around with it.

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