linux-kernel - [PATCH v5 04/17] media: uapi: HEVC: Add missing fields in HEVC controls

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Date:   Thu,  7 Apr 2022 17:29:27 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     mchehab@...nel.org, hverkuil@...all.nl,
        ezequiel@...guardiasur.com.ar, p.zabel@...gutronix.de,
        gregkh@...uxfoundation.org, mripard@...nel.org,
        paul.kocialkowski@...tlin.com, wens@...e.org,
        jernej.skrabec@...il.com, samuel@...lland.org,
        nicolas.dufresne@...labora.com
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        sebastian.fricke@...labora.com,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH v5 04/17] media: uapi: HEVC: Add missing fields in HEVC controls

Complete the HEVC controls with missing fields from H.265 specifications.
Even if these fields aren't used by the current mainlined drivers
they will be need for (at least) rkvdec driver.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
---
 .../media/v4l/ext-ctrls-codec.rst             | 19 +++++++++++++++++++
 include/media/hevc-ctrls.h                    |  6 +++++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index 4cd7c541fc30..dbb08603217b 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -2661,6 +2661,16 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
     :stub-columns: 0
     :widths:       1 1 2
 
+    * - __u8
+      - ``video_parameter_set_id``
+      - Specifies the value of the vps_video_parameter_set_id of the active VPS
+        as descibed in section "7.4.3.2.1 General sequence parameter set RBSP semantics"
+        of H.265 specifications.
+    * - __u8
+      - ``seq_parameter_set_id``
+      - Provides an identifier for the SPS for reference by other syntax elements
+        as descibed in section "7.4.3.2.1 General sequence parameter set RBSP semantics"
+        of H.265 specifications.
     * - __u16
       - ``pic_width_in_luma_samples``
       -
@@ -2800,6 +2810,9 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
     :stub-columns: 0
     :widths:       1 1 2
 
+    * - __u8
+      - ``pic_parameter_set_id``
+      - Identifies the PPS for reference by other syntax elements.
     * - __u8
       - ``num_extra_slice_header_bits``
       -
@@ -3026,6 +3039,12 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
     * - __u8
       - ``ref_idx_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
       - The list of L1 reference elements as indices in the DPB.
+    * - __u16
+      - ``short_term_ref_pic_set_size``
+      - Specifies the size of short-term reference pictures set included in the SPS.
+    * - __u16
+      - ``long_term_ref_pic_set_size``
+      - Specifies the size of long-term reference pictures set include in the SPS.
     * - __u8
       - ``padding``
       - Applications and drivers must set this to zero.
diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h
index 01ccda48d8c5..a329e086a89a 100644
--- a/include/media/hevc-ctrls.h
+++ b/include/media/hevc-ctrls.h
@@ -58,6 +58,8 @@ enum v4l2_mpeg_video_hevc_start_code {
 /* The controls are not stable at the moment and will likely be reworked. */
 struct v4l2_ctrl_hevc_sps {
 	/* ISO/IEC 23008-2, ITU-T Rec. H.265: Sequence parameter set */
+	__u8	video_parameter_set_id;
+	__u8	seq_parameter_set_id;
 	__u16	pic_width_in_luma_samples;
 	__u16	pic_height_in_luma_samples;
 	__u8	bit_depth_luma_minus8;
@@ -108,6 +110,7 @@ struct v4l2_ctrl_hevc_sps {
 
 struct v4l2_ctrl_hevc_pps {
 	/* ISO/IEC 23008-2, ITU-T Rec. H.265: Picture parameter set */
+	__u8	pic_parameter_set_id;
 	__u8	num_extra_slice_header_bits;
 	__u8	num_ref_idx_l0_default_active_minus1;
 	__u8	num_ref_idx_l1_default_active_minus1;
@@ -199,7 +202,8 @@ struct v4l2_ctrl_hevc_slice_params {
 	__u32	slice_segment_addr;
 	__u8	ref_idx_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
 	__u8	ref_idx_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
-
+	__u16	short_term_ref_pic_set_size;
+	__u16	long_term_ref_pic_set_size;
 	__u8	padding;
 
 	/* ISO/IEC 23008-2, ITU-T Rec. H.265: Weighted prediction parameter */
-- 
2.32.0