[v4,0/4] media: vsp1: Phased partition overlap support

Message

Kieran Bingham May 13, 2019, 8:13 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 three 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 the partition window is propagated forwards through the entity list
allowing them to update any offset which will mark left pixels to be discarded
by the WPF (or UDS).

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


Kieran Bingham (4):
  media: vsp1: Define partition algorithm helper
  media: vsp1: Document partition algorithm in code header
  media: vsp1: Split out pre-filter calculation
  media: vsp1: Provide partition overlap algorithm

 drivers/media/platform/vsp1/vsp1_entity.h |   2 +-
 drivers/media/platform/vsp1/vsp1_pipe.c   |  70 +++++++++-
 drivers/media/platform/vsp1/vsp1_pipe.h   |  15 +-
 drivers/media/platform/vsp1/vsp1_rpf.c    |  10 +-
 drivers/media/platform/vsp1/vsp1_sru.c    |  52 ++++++-
 drivers/media/platform/vsp1/vsp1_uds.c    | 163 +++++++++++++++++++---
 drivers/media/platform/vsp1/vsp1_video.c  |  12 +-
 drivers/media/platform/vsp1/vsp1_wpf.c    |  16 ++-
 8 files changed, 299 insertions(+), 41 deletions(-)