[PATCH v2 0/12] MR9489: mf: Fix seeking within sample grabber.

[Brendan McGrath (＠redmcg)]

This fixes seeking within sample grabber by matching Windows functionality.

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  v2: mf: Request new sample before processing markers.
      mf: Remove no longer used sample_count and samples array.
      mf: Ensure we always have four requests outstanding/satisfied.
      mf: Always queue a sample unless stopped.
      mf: Keep count of samples queued.
      mf: Make flushing on sample grabber largely a no-op.
      mf/tests: Check contents of sample collection.
      mf/tests: Test seek with sample grabber whilst ignoring clock.
      mf/tests: Test samplegrabber flush then seek.
      mf/tests: Check StreamSinkMarker event.
      mf/tests: Test sample grabber {Set,Cancel}Timer.
      mf/tests: Add test for sample grabber seek.

https://gitlab.winehq.org/wine/wine/-/merge_requests/9489