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From 88eb3b015b6f61252fd214d39fc7fc0379ee0442 Mon Sep 17 00:00:00 2001
From: Jernej Skrabec <jernej.skrabec@siol.net>
Date: Fri, 13 Dec 2019 17:04:27 +0100
Subject: [PATCH] media: uapi: hevc: Add segment address field
From https://patchwork.linuxtv.org/patch/60725/
Changes requested, but mainly docs.
If HEVC frame consists of multiple slices, segment address has to be
known in order to properly decode it.
Add segment address field to slice parameters.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
Documentation/media/uapi/v4l/ext-ctrls-codec.rst | 5 ++++-
include/media/hevc-ctrls.h | 5 ++++-
2 files changed, 8 insertions(+), 2 deletions(-)
--- a/Documentation/media/uapi/v4l/ext-ctrls-codec.rst
+++ b/Documentation/media/uapi/v4l/ext-ctrls-codec.rst
@@ -3969,6 +3969,9 @@ enum v4l2_mpeg_video_hevc_size_of_length
* - __u32
- ``data_bit_offset``
- Offset (in bits) to the video data in the current slice data.
+ * - __u32
+ - ``slice_segment_addr``
+ -
* - __u8
- ``nal_unit_type``
-
@@ -4046,7 +4049,7 @@ enum v4l2_mpeg_video_hevc_size_of_length
- ``num_rps_poc_lt_curr``
- The number of reference pictures in the long-term set.
* - __u8
- - ``padding[7]``
+ - ``padding[5]``
- Applications and drivers must set this to zero.
* - struct :c:type:`v4l2_hevc_dpb_entry`
- ``dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
--- a/include/media/hevc-ctrls.h
+++ b/include/media/hevc-ctrls.h
@@ -167,6 +167,9 @@ struct v4l2_ctrl_hevc_slice_params {
__u32 bit_size;
__u32 data_bit_offset;
+ /* ISO/IEC 23008-2, ITU-T Rec. H.265: General slice segment header */
+ __u32 slice_segment_addr;
+
/* ISO/IEC 23008-2, ITU-T Rec. H.265: NAL unit header */
__u8 nal_unit_type;
__u8 nuh_temporal_id_plus1;
@@ -200,7 +203,7 @@ struct v4l2_ctrl_hevc_slice_params {
__u8 num_rps_poc_st_curr_after;
__u8 num_rps_poc_lt_curr;
- __u8 padding;
+ __u8 padding[5];
/* ISO/IEC 23008-2, ITU-T Rec. H.265: General slice segment header */
struct v4l2_hevc_dpb_entry dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
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