On 09.02.2017 21:04, Thibault Saunier wrote:
> From: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
>
> The media documentation says that the V4L2_COLORSPACE_SMPTE170M colorspace
> should be used for SDTV and V4L2_COLORSPACE_REC709 for HDTV. But drivers
> don't agree on the display resolution that should be used as a threshold.
>
> Some drivers set V4L2_COLORSPACE_REC709 for 720p and higher while others
> set V4L2_COLORSPACE_REC709 for anything higher than 576p. Newers drivers
> use the latter and that also matches what user-space multimedia programs
> do (i.e: GStreamer), so change the driver logic to be aligned with this.
>
> Also, check for the resolution in G_FMT instead unconditionally setting
> the V4L2_COLORSPACE_REC709 colorspace.
>
> Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
Reviewed-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
--
Regards
Andrzej
> ---
> drivers/media/platform/exynos-gsc/gsc-core.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c
> index cbb03768f5d7..2beb43401987 100644
> --- a/drivers/media/platform/exynos-gsc/gsc-core.c
> +++ b/drivers/media/platform/exynos-gsc/gsc-core.c
> @@ -445,7 +445,7 @@ int gsc_try_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f)
>
> pix_mp->num_planes = fmt->num_planes;
>
> - if (pix_mp->width >= 1280) /* HD */
> + if (pix_mp->width > 720 && pix_mp->height > 576) /* HD */
> pix_mp->colorspace = V4L2_COLORSPACE_REC709;
> else /* SD */
> pix_mp->colorspace = V4L2_COLORSPACE_SMPTE170M;
> @@ -492,7 +492,10 @@ int gsc_g_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f)
> pix_mp->height = frame->f_height;
> pix_mp->field = V4L2_FIELD_NONE;
> pix_mp->pixelformat = frame->fmt->pixelformat;
> - pix_mp->colorspace = V4L2_COLORSPACE_REC709;
> + if (pix_mp->width > 720 && pix_mp->height > 576) /* HD */
> + pix_mp->colorspace = V4L2_COLORSPACE_REC709;
> + else /* SD */
> + pix_mp->colorspace = V4L2_COLORSPACE_SMPTE170M;
> pix_mp->num_planes = frame->fmt->num_planes;
>
> for (i = 0; i < pix_mp->num_planes; ++i) {
--
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