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[v3,02/19] media: uapi: h264: Further clarify scaling lists order

Message ID 20200814133634.95665-3-ezequiel@collabora.com (mailing list archive)
State New, archived
Headers show
Series Clean H264 stateless uAPI | expand

Commit Message

Ezequiel Garcia Aug. 14, 2020, 1:36 p.m. UTC 
Commit 0b0393d59eb4a ("media: uapi: h264: clarify
expected scaling_list_4x4/8x8 order") improved the
documentation on H264 scaling lists order.

This commit improves the documentation by clarifying
that the lists themselves are expected in raster scan order.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
v2:
* Use "raster scan order" instead of "matrix order"
---
 Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
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Patch

diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index b9b2617c3bda..694037ce888a 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -1725,12 +1725,14 @@  enum v4l2_mpeg_video_h264_hierarchical_coding_type -
       - ``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.
+        Inter Cb, Inter Cr. The values on each scaling list are
+        expected in raster scan order.
     * - __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.
+        Intra Cr, Inter Cr. The values on each scaling list are
+        expected in raster scan order.
 
 ``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS (struct)``
     Specifies the slice parameters (as extracted from the bitstream)