linux-kernel - [PATCH v7 07/17] media: uapi: HEVC: Add SEI pic struct flags

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Message-Id: <20220614074947.160316-8-benjamin.gaignard@collabora.com>
Date:   Tue, 14 Jun 2022 09:49:37 +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, andrzej.p@...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,
        kernel@...labora.com,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH v7 07/17] media: uapi: HEVC: Add SEI pic struct flags

The possible values for the field_pic field in the v4l2_hevc_dpb_entry
structure are defined in the table D.2 in HEVC specification section D.3.3.
Add flags and documentation for each of them.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
---
 .../media/v4l/ext-ctrls-codec.rst             | 54 +++++++++++++++++++
 include/media/hevc-ctrls.h                    | 14 +++++
 2 files changed, 68 insertions(+)

diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index a7803b241612..1ccf6dda61b3 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -3218,6 +3218,7 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
     * - __u8
       - ``field_pic``
       - Whether the reference is a field picture or a frame.
+        See :ref:`HEVC dpb field pic Flags <hevc_dpb_field_pic_flags>`
     * - __u16
       - ``pic_order_cnt[2]``
       - The picture order count of the reference. Only the first element of the
@@ -3231,6 +3232,59 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
 
     \normalsize
 
+.. _hevc_dpb_field_pic_flags:
+
+``HEVC dpb field pic Flags``
+
+.. raw:: latex
+
+    \scriptsize
+
+.. flat-table::
+    :header-rows:  0
+    :stub-columns: 0
+    :widths:       1 1 2
+
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_FRAME``
+      - 0
+      - (progressive) Frame
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_TOP_FIELD``
+      - 1
+      - Top field
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_FIELD``
+      - 2
+      - Bottom field
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_TOP_BOTTOM``
+      - 3
+      - Top field, bottom field, in that order
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_TOP``
+      - 4
+      - Bottom field, top field, in that order
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_TOP_BOTTOM_TOP``
+      - 5
+      - Top field, bottom field, top field repeated, in that order
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM``
+      - 6
+      - Bottom field, top field, bottom field repeated, in that order
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_FRAME_DOUBLING``
+      - 7
+      - Frame doubling
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_FRAME_TRIPLING``
+      - 8
+      - Frame tripling
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_TOP_PAIRED_PREVIOUS_BOTTOM``
+      - 9
+      - Top field paired with previous bottom field in output order
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_PAIRED_PREVIOUS_TOP``
+      - 10
+      - Bottom field paired with previous top field in output order
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_TOP_PAIRED_NEXT_BOTTOM``
+      - 11
+      - Top field paired with next bottom field in output order
+    * - ``V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_PAIRED_NEXT_TOP``
+      - 12
+      - Bottom field paired with next top field in output order
+
 .. c:type:: v4l2_hevc_pred_weight_table
 
 .. raw:: latex
diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h
index 01c1795c57a9..f3695ab44389 100644
--- a/include/media/hevc-ctrls.h
+++ b/include/media/hevc-ctrls.h
@@ -132,6 +132,20 @@ struct v4l2_ctrl_hevc_pps {
 
 #define V4L2_HEVC_DPB_ENTRY_LONG_TERM_REFERENCE	0x01
 
+#define V4L2_HEVC_SEI_PIC_STRUCT_FRAME				0
+#define V4L2_HEVC_SEI_PIC_STRUCT_TOP_FIELD			1
+#define V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_FIELD			2
+#define V4L2_HEVC_SEI_PIC_STRUCT_TOP_BOTTOM			3
+#define V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_TOP			4
+#define V4L2_HEVC_SEI_PIC_STRUCT_TOP_BOTTOM_TOP			5
+#define V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM		6
+#define V4L2_HEVC_SEI_PIC_STRUCT_FRAME_DOUBLING			7
+#define V4L2_HEVC_SEI_PIC_STRUCT_FRAME_TRIPLING			8
+#define V4L2_HEVC_SEI_PIC_STRUCT_TOP_PAIRED_PREVIOUS_BOTTOM	9
+#define V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_PAIRED_PREVIOUS_TOP	10
+#define V4L2_HEVC_SEI_PIC_STRUCT_TOP_PAIRED_NEXT_BOTTOM		11
+#define V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_PAIRED_NEXT_TOP		12
+
 #define V4L2_HEVC_DPB_ENTRIES_NUM_MAX		16
 
 struct v4l2_hevc_dpb_entry {
-- 
2.32.0