[v3,0/5] media: vsp1: Phased partition overlap support

Message

Kieran Bingham April 11, 2019, 4:12 p.m. UTC

The UDS and SRU (and SHP) require expanded partition windows to support
overlapping partition windows as a means of discarding discontinous pixel data,
due to repeated pixels in their input filters.

The first four patches are clean ups and helpers to facilitate the
implementation of an updated procedure for calculating the partition windows.

The entities are iterated first backwards through the pipeline allowing them to
request an expanded input window if needed to satisfy their required output.

Then, as only the WPF can support clipping on the left edge, (though the UDS
can clip on it's right edge) the partition window is then propagated forwards
through the entity list allowing them to update any offset which will mark left
pixels to be discarded by the WPF.

Any expanded pixels to the right edge will automatically be clipped by the WPF
as it's partition window will remain fixed.

Kieran Bingham (5):
  media: vsp1: Define partition algorithm helper
  media: vsp1: Initialise partition windows
  media: vsp1: Document partition algorithm in code header
  media: vsp1: Split out pre-filter multiplier
  media: vsp1: Provide partition overlap algorithm

 drivers/media/platform/vsp1/vsp1_entity.h |   2 +-
 drivers/media/platform/vsp1/vsp1_pipe.c   |  48 +++++++-
 drivers/media/platform/vsp1/vsp1_pipe.h   |   7 ++
 drivers/media/platform/vsp1/vsp1_rpf.c    |  10 +-
 drivers/media/platform/vsp1/vsp1_sru.c    |  38 +++++-
 drivers/media/platform/vsp1/vsp1_uds.c    | 137 +++++++++++++++++++---
 drivers/media/platform/vsp1/vsp1_video.c  |  13 +-
 drivers/media/platform/vsp1/vsp1_wpf.c    |  16 ++-
 8 files changed, 241 insertions(+), 30 deletions(-)