[PATCH 3/4] [media] s5p-mfc: Set colorspace in VIDIO_{G,TRY}_FMT

[Thibault Saunier]

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, also respect usespace setting.

Use 576p display resolution as a threshold to set this.

Signed-off-by: Thibault Saunier <thibault.saun...@osg.samsung.com>
---
 drivers/media/platform/s5p-mfc/s5p_mfc_dec.c | 19 +++++++++++++++++++
 1 file changed, 19 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..960d6c7052bd 100644
--- a/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c
@@ -354,6 +354,15 @@ 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->colorspace != V4L2_COLORSPACE_REC709 &&
+                       pix_mp->colorspace != V4L2_COLORSPACE_SMPTE170M &&
+                       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;
+               }
        } else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
                /* This is run on OUTPUT
                   The buffer contains compressed image
@@ -378,6 +387,7 @@ 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 +415,15 @@ 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_REC709 &&
+                       pix_mp->colorspace != V4L2_COLORSPACE_SMPTE170M &&
+                       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