Hi Ezequiel,
On Sat 25 Apr 20, 10:46, Ezequiel Garcia wrote:
> Hi Paul,
>
> Thanks a lot for the patch.
>
> I haven't had the chance to test this,
> but I'd say you are fixing a long time issue here.
>
> I really appreciate that.
>
> On Thu, 2020-04-23 at 22:09 +0200, Paul Kocialkowski wrote:
> > Setting the output CSC mode is required for a YUV output, but must not
> > be set when the input is also YUV. Doing this (as tested with a YUV420P
> > to YUV420P conversion) results in wrong colors.
> >
> > Adapt the logic to only set the CSC mode when the output is YUV and the
> > input is RGB.
> >
> > Fixes: f7e7b48e6d79 ("[media] rockchip/rga: v4l2 m2m support")
> > Signed-off-by: Paul Kocialkowski <[email protected]>
> > ---
> > drivers/media/platform/rockchip/rga/rga-hw.c | 18 +++++++++++-------
> > 1 file changed, 11 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/media/platform/rockchip/rga/rga-hw.c
> > b/drivers/media/platform/rockchip/rga/rga-hw.c
> > index 4be6dcf292ff..cbffcf986ccf 100644
> > --- a/drivers/media/platform/rockchip/rga/rga-hw.c
> > +++ b/drivers/media/platform/rockchip/rga/rga-hw.c
> > @@ -216,13 +216,17 @@ static void rga_cmd_set_trans_info(struct rga_ctx
> > *ctx)
> > }
> >
> > if (ctx->out.fmt->hw_format >= RGA_COLOR_FMT_YUV422SP) {
>
> Since we are already here touching this code, would you mind
> adding another patch, to do some cleaning first?
>
> First, replace the nested ifs with a boolean operator.
> Then, introduce some IS_YUV (or IS_RGB) macro, making the above test
> more like IS_YUV(out_hw_format).
>
> Finally, perhaps a comment along the lines of your commit message:
>
> """
> Setting the output CSC mode is required for a YUV output,
> but must not be set when the input is also YUV.
> """
>
> Details up to you :-)
>
> After the clean-up patch, which would be just cosmetics,
> your fix should be cleaner and more clear.
All done in v3, thanks for the feedback :)
Cheers,
Paul
> Thanks,
> Ezequiel
>
> > - switch (ctx->out.colorspace) {
> > - case V4L2_COLORSPACE_REC709:
> > - dst_info.data.csc_mode = RGA_SRC_CSC_MODE_BT709_R0;
> > - break;
> > - default:
> > - dst_info.data.csc_mode = RGA_DST_CSC_MODE_BT601_R0;
> > - break;
> > + if (ctx->in.fmt->hw_format < RGA_COLOR_FMT_YUV422SP) {
> > + switch (ctx->out.colorspace) {
> > + case V4L2_COLORSPACE_REC709:
> > + dst_info.data.csc_mode =
> > + RGA_SRC_CSC_MODE_BT709_R0;
> > + break;
> > + default:
> > + dst_info.data.csc_mode =
> > + RGA_DST_CSC_MODE_BT601_R0;
> > + break;
> > + }
> > }
> > }
> >
>
>
--
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
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