summaryrefslogtreecommitdiff
path: root/Documentation/media
diff options
context:
space:
mode:
authorPhilipp Zabel <p.zabel@pengutronix.de>2019-01-10 19:56:10 +0300
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2019-01-16 22:03:19 +0300
commitd034696cbe5a6e00f76ca4b7869c6cdef66aebd5 (patch)
tree581ec2e43fb8bf32df8f93faa36fa044e2fbccf5 /Documentation/media
parent50656bad786d001b294764e9f047c5d5b3e4db75 (diff)
downloadlinux-d034696cbe5a6e00f76ca4b7869c6cdef66aebd5.tar.xz
media: v4l2-ctrl: Add control for h.264 chroma qp offset
Allow to add fixed quantization parameter offset between luma and chroma quantization parameters. This control directly corresponds to the chroma_qp_index_offset field of the h.264 picture parameter set. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'Documentation/media')
-rw-r--r--Documentation/media/uapi/v4l/extended-controls.rst5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/media/uapi/v4l/extended-controls.rst b/Documentation/media/uapi/v4l/extended-controls.rst
index 235d0c293983..00934efdc9e4 100644
--- a/Documentation/media/uapi/v4l/extended-controls.rst
+++ b/Documentation/media/uapi/v4l/extended-controls.rst
@@ -1158,6 +1158,11 @@ enum v4l2_mpeg_video_h264_entropy_mode -
Enable constrained intra prediction for H264. Applicable to the H264
encoder.
+``V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET (integer)``
+ Specify the offset that should be added to the luma quantization
+ parameter to determine the chroma quantization parameter. Applicable
+ to the H264 encoder.
+
``V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB (integer)``
Cyclic intra macroblock refresh. This is the number of continuous
macroblocks refreshed every frame. Each frame a successive set of