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-rw-r--r--Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst7
1 files changed, 7 insertions, 0 deletions
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 3d8411acd5b8..677bf0fbcc5a 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst
@@ -2923,6 +2923,13 @@ This structure contains all loop filter related parameters. See sections
- ``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.
+ * - __u8
+ - ``num_delta_pocs_of_ref_rps_idx``
+ - When the short_term_ref_pic_set_sps_flag in the slice header is equal to 0,
+ it is the same as the derived value NumDeltaPocs[RefRpsIdx]. It can be used to parse
+ the RPS data in slice headers instead of skipping it with @short_term_ref_pic_set_size.
+ When the value of short_term_ref_pic_set_sps_flag in the slice header is
+ equal to 1, num_delta_pocs_of_ref_rps_idx shall be set to 0.
* - struct :c:type:`v4l2_hevc_dpb_entry`
- ``dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
- The decoded picture buffer, for meta-data about reference frames.