[PATCH v2 0/5] MR1384: winegstreamer: Fix some quartz transform issues.

[Anton Baskanov (＠baskanov)]

- v2:
  - Allocate 3 buffers instead of 100.
  - Add support for MFSampleExtension_Discontinuity.

--
  v2: winegstreamer: Set the discontinuity flag in wg_transform.
      include: Add MFSampleExtension_Discontinuity to mfapi.h.
      winegstreamer: Allocate at least 3 buffers for MPEG audio in quartz parser.
      winegstreamer: Release the samples when stopping the quartz transform.
      winegstreamer: Hold the streaming lock while destroying wg_transform.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/1384