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media: v4l2-ctrl: add controls for long term reference.

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Long Term Reference (LTR) frames are the frames that are encoded
sometime in the past and stored in the DPB buffer list to be used
as reference to encode future frames.
This change adds controls to enable this feature.

Signed-off-by: Dikshita Agarwal <dikshita@codeaurora.org>
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Dikshita Agarwal 2021-03-24 10:54:31 +01:00 • committed by Mauro Carvalho Chehab
parent ddbcd0c58a
commit f15c54cf3f
3 changed files with 35 additions and 0 deletions
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3
include/uapi/linux/v4l2-controls.h
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@ -429,6 +429,9 @@ enum v4l2_mpeg_video_multi_slice_mode {
#define V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME (V4L2_CID_CODEC_BASE+229)
#define V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID (V4L2_CID_CODEC_BASE+230)
#define V4L2_CID_MPEG_VIDEO_AU_DELIMITER (V4L2_CID_CODEC_BASE+231)
#define V4L2_CID_MPEG_VIDEO_LTR_COUNT (V4L2_CID_CODEC_BASE+232)
#define V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX (V4L2_CID_CODEC_BASE+233)
#define V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES (V4L2_CID_CODEC_BASE+234)
/* CIDs for the MPEG-2 Part 2 (H.262) codec */
#define V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL (V4L2_CID_CODEC_BASE+270)