The media documentation says that the V4L2_COLORSPACE_SMPTE170M colorspace
should be used for SDTV and V4L2_COLORSPACE_REC709 for HDTV but the driver
didn't set the colorimetry when userspace provided
V4L2_COLORSPACE_DEFAULT.
Use 576p display resolution as a threshold to set this as suggested by
EIA CEA 861B.
Signed-off-by: Thibault Saunier <thibault.saun...@osg.samsung.com>
---
Changes in v5: None
Changes in v4:
- Set the colorspace only if the user passed V4L2_COLORSPACE_DEFAULT, in
all other cases just use what userspace provided.
Changes in v3:
- Do not check values in the g_fmt functions as Andrzej explained in previous
review
- Set colorspace if user passed V4L2_COLORSPACE_DEFAULT in
Changes in v2: None
drivers/media/platform/s5p-mfc/s5p_mfc_dec.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c
b/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c
index 367ef8e8dbf0..0976c3e0a5ce 100644
--- a/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c
@@ -354,6 +354,11 @@ static int vidioc_g_fmt(struct file *file, void *priv,
struct v4l2_format *f)
pix_mp->plane_fmt[0].sizeimage = ctx->luma_size;
pix_mp->plane_fmt[1].bytesperline = ctx->buf_width;
pix_mp->plane_fmt[1].sizeimage = ctx->chroma_size;
+
+ if (pix_mp->width > 720 && pix_mp->height > 576) /* HD */
+ pix_mp->colorspace = V4L2_COLORSPACE_REC709;
+ else /* SD */
+ pix_mp->colorspace = V4L2_COLORSPACE_SMPTE170M;
} else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
/* This is run on OUTPUT
The buffer contains compressed image
@@ -378,6 +383,7 @@ static int vidioc_g_fmt(struct file *file, void *priv,
struct v4l2_format *f)
static int vidioc_try_fmt(struct file *file, void *priv, struct v4l2_format *f)
{
struct s5p_mfc_dev *dev = video_drvdata(file);
+ struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
struct s5p_mfc_fmt *fmt;
mfc_debug(2, "Type is %d\n", f->type);
@@ -405,6 +411,14 @@ static int vidioc_try_fmt(struct file *file, void *priv,
struct v4l2_format *f)
mfc_err("Unsupported format by this MFC version.\n");
return -EINVAL;
}
+
+ if (pix_mp->colorspace == V4L2_COLORSPACE_DEFAULT) {
+ if (pix_mp->width > 720 &&
+ pix_mp->height > 576) /* HD */
+ pix_mp->colorspace = V4L2_COLORSPACE_REC709;
+ else /* SD */
+ pix_mp->colorspace = V4L2_COLORSPACE_SMPTE170M;
+ }
}
return 0;
--
2.11.1
