This control indicates the priority id to be applied
to base layer.
Signed-off-by: Dikshita Agarwal <dikshita@xxxxxxxxxxxxxx>
---
Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst | 9 +++++++++
drivers/media/v4l2-core/v4l2-ctrls.c | 1 +
include/uapi/linux/v4l2-controls.h | 1 +
3 files changed, 11 insertions(+)
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index 6e9240a..aac1ea3 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -4407,3 +4407,12 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
to the LTR index max LTR count-1.
This is applicable to H264 and HEVC encoder and can be applied using
request api.
+
+``V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITYID (integer)``
+ Specifies a priority identifier for the NAL unit,
+ which will be applied to base layer.
+ By default this value is set to 0 for base layer.
+ And the next layer will have priority ID assigned as 1,2,3 and so on.
+ Video encode can't decide the priority id to be applied to a layer
+ so this has to come from client.
+ Valid Range: from 0 to 63
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 046198f..c973058 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -952,6 +952,7 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_MPEG_VIDEO_LTR_COUNT: return "LTR Count";
case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX: return "Mark LTR frame index";
case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAME: return "Use LTR Frame";
+ case V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITYID: return "Base Layer Priority ID";
case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS: return "MPEG-2 Slice Parameters";
case V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION: return "MPEG-2 Quantization Matrices";
case V4L2_CID_MPEG_VIDEO_FWHT_PARAMS: return "FWHT Stateless Parameters";
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 3801372..433e119 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -418,6 +418,7 @@ enum v4l2_mpeg_video_multi_slice_mode {
#define V4L2_CID_MPEG_VIDEO_LTR_COUNT (V4L2_CID_MPEG_BASE+230)
#define V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX (V4L2_CID_MPEG_BASE+231)
#define V4L2_CID_MPEG_VIDEO_USE_LTR_FRAME (V4L2_CID_MPEG_BASE+232)
+#define V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITYID (V4L2_CID_MPEG_BASE+233)
/* CIDs for the MPEG-2 Part 2 (H.262) codec */
#define V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL (V4L2_CID_MPEG_BASE+270)
--
1.9.1
