Add a control to configure number of macroblocks for random
intra-refresh mode.
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@xxxxxxxxxx>
---
Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst | 6 ++++++
drivers/media/v4l2-core/v4l2-ctrls.c | 1 +
include/uapi/linux/v4l2-controls.h | 1 +
3 files changed, 8 insertions(+)
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index ce728c757eaf..59c5d3da4d95 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -1104,6 +1104,12 @@ enum v4l2_mpeg_video_h264_entropy_mode -
macroblocks is refreshed until the cycle completes and starts from
the top of the frame. Applicable to H264, H263 and MPEG4 encoder.
+``V4L2_CID_MPEG_VIDEO_RANDOM_INTRA_REFRESH_MB (integer)``
+ Random intra macroblock refresh. This is the number of random
+ macroblocks refreshed on every frame. Here the positions of
+ macroblocks to be refreshed on every frame is random. Applicable
+ to H264 and HEVC encoder.
+
``V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE (boolean)``
Frame level rate control enable. If this control is disabled then
the quantization parameter for each frame type is constant and set
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index ad47d00e28d6..5354547ed777 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -869,6 +869,7 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE: return "Decoder Slice Interface";
case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: return "MPEG4 Loop Filter Enable";
case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB: return "Number of Intra Refresh MBs";
+ case V4L2_CID_MPEG_VIDEO_RANDOM_INTRA_REFRESH_MB: return "Number of Random IR MBs";
case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: return "Frame Level Rate Control Enable";
case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE: return "H264 MB Level Rate Control";
case V4L2_CID_MPEG_VIDEO_HEADER_MODE: return "Sequence Header Mode";
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 7035f4fb182c..cc7676ffff67 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -421,6 +421,7 @@ enum v4l2_mpeg_video_multi_slice_mode {
#define V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE (V4L2_CID_MPEG_BASE+227)
#define V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE (V4L2_CID_MPEG_BASE+228)
#define V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME (V4L2_CID_MPEG_BASE+229)
+#define V4L2_CID_MPEG_VIDEO_RANDOM_INTRA_REFRESH_MB (V4L2_CID_MPEG_BASE+230)
/* CIDs for the MPEG-2 Part 2 (H.262) codec */
#define V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL (V4L2_CID_MPEG_BASE+270)
--
2.17.1
