| Message ID | HE1PR06MB4011E174FC8A19141A3ABE95AC610@HE1PR06MB4011.eurprd06.prod.outlook.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: uapi: h264: clarify expected scaling list order | expand |
On Tue, 2019-10-29 at 00:00 +0000, Jonas Karlman wrote: > Clarify that the expected order of scaling lists should follow the order > they are listed in the H264 standard. > > The expected scaling list order, > for 4x4: Intra Y, Intra Cb, Intra Cr, Inter Y, Inter Cb, Inter Cr, > for 8x8: Intra Y, Inter Y, Intra Cb, Inter Cb, Intra Cr, Inter Cr. > > Also clarify that the values in a scaling list should be in matrix order, > the same value order that vaapi, vdpau and nvdec use. > > Signed-off-by: Jonas Karlman <jonas@kwiboo.se> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> regards Philipp
diff --git a/Documentation/media/uapi/v4l/ext-ctrls-codec.rst b/Documentation/media/uapi/v4l/ext-ctrls-codec.rst index a1209f68c5e8..28313c0f4e7c 100644 --- a/Documentation/media/uapi/v4l/ext-ctrls-codec.rst +++ b/Documentation/media/uapi/v4l/ext-ctrls-codec.rst @@ -1713,10 +1713,14 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - * - __u8 - ``scaling_list_4x4[6][16]`` - - + - Scaling matrix after applying the inverse scanning process. + Expected list order is Intra Y, Intra Cb, Intra Cr, Inter Y, + Inter Cb, Inter Cr. * - __u8 - ``scaling_list_8x8[6][64]`` - - + - Scaling matrix after applying the inverse scanning process. + Expected list order is Intra Y, Inter Y, Intra Cb, Inter Cb, + Intra Cr, Inter Cr. ``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS (struct)`` Specifies the slice parameters (as extracted from the bitstream)
Clarify that the expected order of scaling lists should follow the order they are listed in the H264 standard. The expected scaling list order, for 4x4: Intra Y, Intra Cb, Intra Cr, Inter Y, Inter Cb, Inter Cr, for 8x8: Intra Y, Inter Y, Intra Cb, Inter Cb, Intra Cr, Inter Cr. Also clarify that the values in a scaling list should be in matrix order, the same value order that vaapi, vdpau and nvdec use. Signed-off-by: Jonas Karlman <jonas@kwiboo.se> --- Documentation/media/uapi/v4l/ext-ctrls-codec.rst | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)