From: Dikshita Agarwal <dikshita@codeaurora.org>
To: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org
Cc: mchehab@kernel.org, hverkuil-cisco@xs4all.nl,
ezequiel@collabora.com, stanimir.varbanov@linaro.org,
vgarodia@codeaurora.org, majja@codeaurora.org,
Dikshita Agarwal <dikshita@codeaurora.org>
Subject: [PATCH] media: v4l2-ctrl: Add base layer priority id control.
Date: Thu, 8 Oct 2020 15:51:20 +0530 [thread overview]
Message-ID: <1602152480-3930-1-git-send-email-dikshita@codeaurora.org> (raw)
This control indicates the priority id to be applied
to base layer.
Signed-off-by: Dikshita Agarwal <dikshita@codeaurora.org>
---
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 690b066..264fb83 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -1251,6 +1251,15 @@ enum v4l2_mpeg_video_h264_entropy_mode -
Force a key frame for the next queued buffer. Applicable to
encoders. This is a general, codec-agnostic keyframe control.
+``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
+
.. _v4l2-mpeg-video-h264-cpb-size:
``V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE (integer)``
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 9296294..ec78510 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -958,6 +958,7 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE: return "Vertical MV Search Range";
case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: return "Repeat Sequence Header";
case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: return "Force Key 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 b869b54..9ed3e39 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -415,6 +415,7 @@ 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_BASELAYER_PRIORITYID (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)
--
1.9.1
reply other threads:[~2020-10-08 10:21 UTC|newest]
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