diff options
Diffstat (limited to 'meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-good/0001-v4l2-Fix-4K-colorimetry.patch')
| -rw-r--r-- | meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-good/0001-v4l2-Fix-4K-colorimetry.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-good/0001-v4l2-Fix-4K-colorimetry.patch b/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-good/0001-v4l2-Fix-4K-colorimetry.patch new file mode 100644 index 0000000000..f78818aa17 --- /dev/null +++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0-plugins-good/0001-v4l2-Fix-4K-colorimetry.patch @@ -0,0 +1,48 @@ +From 545646cccba243236e10362fe7325f89be57da1f Mon Sep 17 00:00:00 2001 +From: Nicolas Dufresne <nicolas.dufresne@collabora.com> +Date: Tue, 18 Jul 2017 11:28:37 -0400 +Subject: [PATCH] v4l2: Fix 4K colorimetry + +Since 1.6, the transfer function for BT2020 has been changed from BT709 +to BT2020_12. It's the same function, but with more precision. As a side +effect, the V4L2 colorpsace didn't match GStreamer colorspace. When +GStreamer ended up making a guess, it would not match anything supported +by V4L2 anymore. This this by using BT2020_12 for BT2020 colorspace and +BT2020 transfer function in replacement of BT709 whenever a 4K +resolution is detected. + +Upstream-Status: Backport +Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org> + +--- + sys/v4l2/gstv4l2object.c | 7 +++++-- + 1 file changed, 5 insertions(+), 2 deletions(-) + +diff --git a/sys/v4l2/gstv4l2object.c b/sys/v4l2/gstv4l2object.c +index 61244455f..aae2c55e7 100644 +--- a/sys/v4l2/gstv4l2object.c ++++ b/sys/v4l2/gstv4l2object.c +@@ -1960,7 +1960,7 @@ gst_v4l2_object_get_colorspace (struct v4l2_format *fmt, + case V4L2_COLORSPACE_BT2020: + cinfo->range = GST_VIDEO_COLOR_RANGE_16_235; + cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT2020; +- cinfo->transfer = GST_VIDEO_TRANSFER_BT709; ++ cinfo->transfer = GST_VIDEO_TRANSFER_BT2020_12; + cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT2020; + break; + case V4L2_COLORSPACE_SMPTE240M: +@@ -2062,7 +2062,10 @@ gst_v4l2_object_get_colorspace (struct v4l2_format *fmt, + + switch (transfer) { + case V4L2_XFER_FUNC_709: +- cinfo->transfer = GST_VIDEO_TRANSFER_BT709; ++ if (fmt->fmt.pix.height > 2160) ++ cinfo->transfer = GST_VIDEO_TRANSFER_BT2020_12; ++ else ++ cinfo->transfer = GST_VIDEO_TRANSFER_BT709; + break; + case V4L2_XFER_FUNC_SRGB: + cinfo->transfer = GST_VIDEO_TRANSFER_SRGB; +-- +2.14.1 + |