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Date: Fri, 25 Feb 2022 17:45:59 +0100
From: Benjamin Gaignard <benjamin.gaignard@...labora.com>
To: mchehab@...nel.org, 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, jonas@...boo.se, nicolas@...fresne.ca
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-staging@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
kernel@...labora.com, knaerzche@...il.com, jc@...esim.co.uk,
Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH v3 13/14] media: uapi: HEVC: fix padding in v4l2 control structures
Fix padding where needed to remove holes and stay align on cache boundaries
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
---
.../userspace-api/media/v4l/ext-ctrls-codec.rst | 6 +++---
drivers/media/v4l2-core/v4l2-ctrls-core.c | 1 -
include/media/hevc-ctrls.h | 15 +++++++++------
3 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index 71f7dc1c1ccd..00fa815cb5f8 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -3423,9 +3423,6 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
* - __u8
- ``num_active_dpb_entries``
- The number of entries in ``dpb``.
- * - struct :c:type:`v4l2_hevc_dpb_entry`
- - ``dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
- - The decoded picture buffer, for meta-data about reference frames.
* - __u8
- ``num_poc_st_curr_before``
- The number of reference pictures in the short-term set that come before
@@ -3449,6 +3446,9 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
- ``poc_lt_curr[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
- PocLtCurr as described in section 8.3.2 "Decoding process for reference
picture set": provides the index of the long term references in DPB array.
+ * - struct :c:type:`v4l2_hevc_dpb_entry`
+ - ``dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
+ - The decoded picture buffer, for meta-data about reference frames.
* - __u64
- ``flags``
- See :ref:`Decode Parameters Flags <hevc_decode_params_flags>`
diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c
index 694de414f545..eb1de4f699d0 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
@@ -819,7 +819,6 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
p_hevc_slice_params = p;
- zero_padding(p_hevc_slice_params->pred_weight_table);
zero_padding(*p_hevc_slice_params);
break;
diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h
index f29298c8c2f8..6bffcb2c8a1d 100644
--- a/include/media/hevc-ctrls.h
+++ b/include/media/hevc-ctrls.h
@@ -133,7 +133,9 @@ struct v4l2_ctrl_hevc_sps {
__u8 chroma_format_idc;
__u8 sps_max_sub_layers_minus1;
+ __u8 padding[6];
__u64 flags;
+ __u8 reserved[24];
};
#define V4L2_HEVC_PPS_FLAG_DEPENDENT_SLICE_SEGMENT_ENABLED (1ULL << 0)
@@ -210,9 +212,10 @@ struct v4l2_ctrl_hevc_pps {
__s8 pps_beta_offset_div2;
__s8 pps_tc_offset_div2;
__u8 log2_parallel_merge_level_minus2;
+ __u8 padding[9];
- __u8 padding[4];
__u64 flags;
+ __u8 reserved[56];
};
#define V4L2_HEVC_DPB_ENTRY_LONG_TERM_REFERENCE 0x01
@@ -271,8 +274,6 @@ struct v4l2_hevc_pred_weight_table {
__s8 delta_chroma_weight_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2];
__s8 chroma_offset_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2];
- __u8 padding[6];
-
__u8 luma_log2_weight_denom;
__s8 delta_chroma_log2_weight_denom;
};
@@ -363,18 +364,20 @@ struct v4l2_ctrl_hevc_slice_params {
/* ISO/IEC 23008-2, ITU-T Rec. H.265: Picture timing SEI message */
__u8 pic_struct;
+ __u8 reserved;
/* ISO/IEC 23008-2, ITU-T Rec. H.265: General slice segment header */
__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 */
struct v4l2_hevc_pred_weight_table pred_weight_table;
+ __u16 reserved1;
__u64 flags;
+ __u8 padding[48];
};
#define V4L2_HEVC_DECODE_PARAM_FLAG_IRAP_PIC 0x1
@@ -386,7 +389,6 @@ struct v4l2_ctrl_hevc_slice_params {
*
* @pic_order_cnt_val: picture order count
* @num_active_dpb_entries: the number of entries in dpb
- * @dpb: the decoded picture buffer, for meta-data about reference frames
* @num_poc_st_curr_before: the number of reference pictures in the short-term
* set that come before the current frame
* @num_poc_st_curr_after: the number of reference pictures in the short-term
@@ -397,18 +399,19 @@ struct v4l2_ctrl_hevc_slice_params {
* @poc_st_curr_after: provides the index of the short term after references
* in DPB array
* @poc_lt_curr: provides the index of the long term references in DPB array
+ * @dpb: the decoded picture buffer, for meta-data about reference frames
* @flags: see V4L2_HEVC_DECODE_PARAM_FLAG_{}
*/
struct v4l2_ctrl_hevc_decode_params {
__s32 pic_order_cnt_val;
__u8 num_active_dpb_entries;
- struct v4l2_hevc_dpb_entry dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
__u8 num_poc_st_curr_before;
__u8 num_poc_st_curr_after;
__u8 num_poc_lt_curr;
__u8 poc_st_curr_before[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
__u8 poc_st_curr_after[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
__u8 poc_lt_curr[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ struct v4l2_hevc_dpb_entry dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
__u64 flags;
};
--
2.32.0
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