diff options
| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2014-05-31 04:45:48 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-17 19:45:00 +0400 |
| commit | bdc2df62ae38bbab044078f4d25a7a3d9e2379c9 (patch) | |
| tree | cff7643ee75c3eaf16a1ee90185c8864045e5765 /drivers/media/platform/vsp1/vsp1_uds.h | |
| parent | a16e2794592b733d47f372f0cadcd9ff0f349ca9 (diff) | |
| download | linux-bdc2df62ae38bbab044078f4d25a7a3d9e2379c9.tar.xz | |
[media] v4l: vsp1: uds: Fix scaling of alpha layer
Pixel color components can be scaled using either bilinear interpolation
or a multitap filter. The multitap filter provides better results, but
can't be selected when the alpha layer need to be scaled down by more
than 1/2.
Disable alpha scaling when the input has a fixed alpha value, and
program the UDS to output a fixed alpha value in that case. This ensures
the multitap filter will be used whenever possible.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/platform/vsp1/vsp1_uds.h')
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_uds.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_uds.h b/drivers/media/platform/vsp1/vsp1_uds.h index 479d12df1180..031ac0da1b66 100644 --- a/drivers/media/platform/vsp1/vsp1_uds.h +++ b/drivers/media/platform/vsp1/vsp1_uds.h @@ -25,9 +25,7 @@ struct vsp1_device; struct vsp1_uds { struct vsp1_entity entity; - - unsigned int hscale; - unsigned int vscale; + bool scale_alpha; }; static inline struct vsp1_uds *to_uds(struct v4l2_subdev *subdev) @@ -37,4 +35,6 @@ static inline struct vsp1_uds *to_uds(struct v4l2_subdev *subdev) struct vsp1_uds *vsp1_uds_create(struct vsp1_device *vsp1, unsigned int index); +void vsp1_uds_set_alpha(struct vsp1_uds *uds, unsigned int alpha); + #endif /* __VSP1_UDS_H__ */ |