[media] v4l: vsp1: bru: Support premultiplied alpha at the BRU inputs
Adjust the BRU blending formula to avoid the multiplication by alpha
when the corresponding input format is premultiplied. As this requires
access to the RPFs connected to the BRU inputs from the BRU module,
store pointers to the RPFs in the BRU structure when validating the
pipeline.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
diff --git a/drivers/media/platform/vsp1/vsp1_bru.h b/drivers/media/platform/vsp1/vsp1_bru.h
index 3706270..5b03479 100644
--- a/drivers/media/platform/vsp1/vsp1_bru.h
+++ b/drivers/media/platform/vsp1/vsp1_bru.h
@@ -19,6 +19,7 @@
#include "vsp1_entity.h"
struct vsp1_device;
+struct vsp1_rwpf;
#define BRU_PAD_SINK(n) (n)
#define BRU_PAD_SOURCE 4
@@ -26,7 +27,10 @@
struct vsp1_bru {
struct vsp1_entity entity;
- struct v4l2_rect compose[4];
+ struct {
+ struct vsp1_rwpf *rpf;
+ struct v4l2_rect compose;
+ } inputs[4];
};
static inline struct vsp1_bru *to_bru(struct v4l2_subdev *subdev)