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media: uapi: HEVC: Add num_delta_pocs_of_ref_rps_idx field

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[ Upstream commit ae440c5da3 ]

Some drivers firmwares parse by themselves slice header and need
num_delta_pocs_of_ref_rps_idx value to parse slice header
short_term_ref_pic_set().
Use one of the 4 reserved bytes to store this value without
changing the v4l2_ctrl_hevc_decode_params structure size and padding.

This value also exist in DXVA API.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil: fix typo in num_delta_pocs_of_ref_rps_idx doc]
Stable-dep-of: 297160d411 ("media: mediatek: vcodec: move core context from device to each instance")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Benjamin Gaignard
2023-05-24 16:07:38 +08:00
committed by Greg Kroah-Hartman
parent 36148a9b14
commit b608025733
2 changed files with 12 additions and 1 deletions
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include/uapi/linux/v4l2-controls.h
+5 -1
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@@ -2411,6 +2411,9 @@ 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
* @num_delta_pocs_of_ref_rps_idx: same as the derived value NumDeltaPocs[RefRpsIdx],
* can be used to parse the RPS data in slice headers
* instead of skipping it with @short_term_ref_pic_set_size.
* @reserved: padding field. Should be zeroed by applications.
* @dpb: the decoded picture buffer, for meta-data about reference frames
* @flags: see V4L2_HEVC_DECODE_PARAM_FLAG_{}
@@ -2426,7 +2429,8 @@ struct v4l2_ctrl_hevc_decode_params {
__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];
__u8 reserved[4];
__u8 num_delta_pocs_of_ref_rps_idx;
__u8 reserved[3];
struct v4l2_hevc_dpb_entry dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
__u64 flags;
};