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(-) -- 2.20.1
