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LibreELEC.tv/packages/linux/patches/rockchip/rockchip-0004-FROMGIT-6.18-media-uapi-HEVC-Add-v4l2_ctrl_hevc_ext_.patch
Christian Hewitt 334b6a6e6b linux: add Rockchip kernel and patches for Linux 6.16.y and 6.17.y 
Patches for RK356X, RK3576 and RK3588 are placed in a 'rockchip'
folder under the Linux package dir. Boards use a common aarch64
arch defconfig.

Patches for RK3288, RK3328 and RK3399 are moved to a 'rockchip-old'
folder under the Linux package dir. Boards continue to use device
level 6.16.y defconfigs to ensure all drivers are present, except
for RK3288 which has been moved to the project level folder to be
the common arm arch defconfig.

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
2025-09-12 09:31:57 +00:00

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From ba2f7791641e70ab3a6ad8605622a46a99f4b667 Mon Sep 17 00:00:00 2001
From: Detlev Casanova <detlev.casanova@collabora.com>
Date: Thu, 24 Jul 2025 14:10:18 -0400
Subject: [PATCH 004/108] FROMGIT(6.18): media: uapi: HEVC: Add
v4l2_ctrl_hevc_ext_sps_[ls]t_rps controls
Some hardware (e.g.: Rockchip's rk3588 hevc decoder) need the
long and short term reference information for HEVC decoding.
Add controls to provide it as the raw data form the stream.
Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
---
.../media/v4l/ext-ctrls-codec-stateless.rst | 114 ++++++++++++++++++
.../media/v4l/vidioc-queryctrl.rst | 12 ++
.../media/videodev2.h.rst.exceptions | 2 +
3 files changed, 128 insertions(+)
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst
index 0da635691fdc..bb6772cf3cee 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst
@@ -2958,6 +2958,120 @@ This structure contains all loop filter related parameters. See sections
- 0x00000004
-
+``V4L2_CID_STATELESS_HEVC_EXT_SPS_LT_RPS (struct)``
+ Specifies the list of Long-Term reference sets parameters from the SPS.
+ These parameters are defined according to :ref:`hevc`.
+ They are described in section 7.4.3.2.1 "General sequence parameter set
+ RBSP semantics" of the specification.
+ This control is a dynamically sized 1-dimensional array,
+ V4L2_CTRL_FLAG_DYNAMIC_ARRAY flag must be set when using it.
+
+.. c:type:: v4l2_ctrl_hevc_ext_sps_lt_rps
+
+.. cssclass:: longtable
+
+.. flat-table:: struct v4l2_ctrl_hevc_ext_sps_lt_rps
+ :header-rows: 0
+ :stub-columns: 0
+ :widths: 1 1 2
+
+ * - __u16
+ - ``lt_ref_pic_poc_lsb_sps``
+ - Long term reference picture order count as described in section 7.4.3.2.1
+ "General sequence parameter set RBSP semantics" of the specification.
+ * - __u8
+ - ``flags``
+ - See :ref:`Extended Long-Term RPS Flags <hevc_ext_sps_lt_rps_flags>`
+
+.. _hevc_ext_sps_lt_rps_flags:
+
+``Extended SPS Long-Term RPS Flags``
+
+.. cssclass:: longtable
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+ :widths: 1 1 2
+
+ * - ``V4L2_HEVC_EXT_SPS_LT_RPS_FLAG_USED_LT``
+ - 0x00000001
+ - Specifies if the long-term reference picture is used 7.4.3.2.1 "General sequence parameter
+ set RBSP semantics" of the specification.
+
+``V4L2_CID_STATELESS_HEVC_EXT_SPS_ST_RPS (struct)``
+ Specifies the list of Short-Term reference sets parameters from the SPS.
+ These parameters are defined according to :ref:`hevc`.
+ They are described in section 7.4.8 "Short-term reference picture set
+ semantics" of the specification.
+ This control is a dynamically sized 1-dimensional array,
+ V4L2_CTRL_FLAG_DYNAMIC_ARRAY flag must be set when using it.
+
+.. c:type:: v4l2_ctrl_hevc_ext_sps_st_rps
+
+.. cssclass:: longtable
+
+.. flat-table:: struct v4l2_ctrl_hevc_ext_sps_st_rps
+ :header-rows: 0
+ :stub-columns: 0
+ :widths: 1 1 2
+
+ * - __u8
+ - ``delta_idx_minus1``
+ - Specifies the delta compare to the index. See details in section 7.4.8 "Short-term
+ reference picture set semantics" of the specification.
+ * - __u8
+ - ``delta_rps_sign``
+ - Sign of the delta as specified in section 7.4.8 "Short-term reference picture set
+ semantics" of the specification.
+ * - __u16
+ - ``abs_delta_rps_minus1``
+ - Absolute delta RPS as specified in section 7.4.8 "Short-term reference picture set
+ semantics" of the specification.
+ * - __u8
+ - ``num_negative_pics``
+ - Number of short-term RPS entries that have picture order count values less than the
+ picture order count value of the current picture.
+ * - __u8
+ - ``num_positive_pics``
+ - Number of short-term RPS entries that have picture order count values greater than the
+ picture order count value of the current picture.
+ * - __u32
+ - ``used_by_curr_pic``
+ - Bit i specifies if short-term RPS i is used by the current picture.
+ * - __u32
+ - ``use_delta_flag``
+ - Bit i specifies if short-term RPS i is included in the short-term RPS entries.
+ * - __u16
+ - ``delta_poc_s0_minus1[16]``
+ - Specifies the negative picture order count delta for the i-th entry in the short-term RPS.
+ See details in section 7.4.8 "Short-term reference picture set semantics" of the
+ specification.
+ * - __u16
+ - ``delta_poc_s1_minus1[16]``
+ - Specifies the positive picture order count delta for the i-th entry in the short-term RPS.
+ See details in section 7.4.8 "Short-term reference picture set semantics" of the
+ specification.
+ * - __u8
+ - ``flags``
+ - See :ref:`Extended Short-Term RPS Flags <hevc_ext_sps_st_rps_flags>`
+
+.. _hevc_ext_sps_st_rps_flags:
+
+``Extended SPS Short-Term RPS Flags``
+
+.. cssclass:: longtable
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+ :widths: 1 1 2
+
+ * - ``V4L2_HEVC_EXT_SPS_ST_RPS_FLAG_INTER_REF_PIC_SET_PRED``
+ - 0x00000001
+ - Specifies if the short-term RPS is predicted from another short term RPS. See details in
+ section 7.4.8 "Short-term reference picture set semantics" of the specification.
+
.. _v4l2-codec-stateless-av1:
``V4L2_CID_STATELESS_AV1_SEQUENCE (struct)``
diff --git a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
index 3549417c7feb..128c044d2e3c 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
@@ -523,6 +523,18 @@ See also the examples in :ref:`control`.
- n/a
- A struct :c:type:`v4l2_ctrl_hevc_decode_params`, containing HEVC
decoding parameters for stateless video decoders.
+ * - ``V4L2_CTRL_TYPE_HEVC_EXT_SPS_LT_RPS``
+ - n/a
+ - n/a
+ - n/a
+ - A struct :c:type:`v4l2_ctrl_hevc_ext_sps_lt_rps`, containing HEVC
+ extended Long-Term RPS for stateless video decoders.
+ * - ``V4L2_CTRL_TYPE_HEVC_EXT_SPS_ST_RPS``
+ - n/a
+ - n/a
+ - n/a
+ - A struct :c:type:`v4l2_ctrl_hevc_ext_sps_st_rps`, containing HEVC
+ extended Short-Term RPS for stateless video decoders.
* - ``V4L2_CTRL_TYPE_VP9_COMPRESSED_HDR``
- n/a
- n/a
diff --git a/Documentation/userspace-api/media/videodev2.h.rst.exceptions b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
index 35d3456cc812..1663fdf8444c 100644
--- a/Documentation/userspace-api/media/videodev2.h.rst.exceptions
+++ b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
@@ -149,6 +149,8 @@ replace symbol V4L2_CTRL_TYPE_H264_DECODE_PARAMS :c:type:`v4l2_ctrl_type`
replace symbol V4L2_CTRL_TYPE_HEVC_SPS :c:type:`v4l2_ctrl_type`
replace symbol V4L2_CTRL_TYPE_HEVC_PPS :c:type:`v4l2_ctrl_type`
replace symbol V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS :c:type:`v4l2_ctrl_type`
+replace symbol V4L2_CTRL_TYPE_HEVC_EXT_SPS_ST_RPS :c:type:`v4l2_ctrl_type`
+replace symbol V4L2_CTRL_TYPE_HEVC_EXT_SPS_LT_RPS :c:type:`v4l2_ctrl_type`
replace symbol V4L2_CTRL_TYPE_AREA :c:type:`v4l2_ctrl_type`
replace symbol V4L2_CTRL_TYPE_RECT :c:type:`v4l2_ctrl_type`
replace symbol V4L2_CTRL_TYPE_FWHT_PARAMS :c:type:`v4l2_ctrl_type`
--
2.34.1
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