[PATCH v4 04/15] media: uapi: HEVC: Add missing fields in HEVC controls

Benjamin Gaignard
2022-02-28T14:21:12Z

Complete the HEVC controls with missing fields from H.265 specifications.
Even if these fields aren't used by the current mainlined drivers
they will be need for (at least) rkvdec driver.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/v4l/ext-ctrls-codec.rst | 22 +++++++++++++++++++
include/media/hevc-ctrls.h | 6 ++++-
2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index 4cd7c541fc30..d096cb75993a 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -2661,6 +2661,16 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
:stub-columns: 0
:widths: 1 1 2

+ * - __u8
+ - ``video_parameter_set_id``
+ - Specifies the value of the vps_video_parameter_set_id of the active VPS
+ as descibed in section "7.4.3.2.1 General sequence parameter set RBSP semantics"
+ of H.265 specifications.
+ * - __u8
+ - ``seq_parameter_set_id``
+ - Provides an identifier for the SPS for reference by other syntax elements
+ as descibed in section "7.4.3.2.1 General sequence parameter set RBSP semantics"
+ of H.265 specifications.
* - __u16
- ``pic_width_in_luma_samples``
-
@@ -2800,6 +2810,9 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
:stub-columns: 0
:widths: 1 1 2

+ * - __u8
+ - ``pic_parameter_set_id``
+ - Identifies the PPS for reference by other syntax elements.
* - __u8
- ``num_extra_slice_header_bits``
-
@@ -3026,6 +3039,15 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
* - __u8
- ``ref_idx_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
- The list of L1 reference elements as indices in the DPB.
+ * - __u16
+ - ``short_term_ref_pic_set_size``
+ - Specifies the number of st_ref_pic_set( ) syntax structures included in the SPS.
+ The value of num_short_term_ref_pic_sets shall be in the range of 0 to 64, inclusive.
+ * - __u16
+ - ``long_term_ref_pic_set_size``
+ - Specifies the number of candidate long-term reference pictures that are specified
+ in the SPS. The value of num_long_term_ref_pics_sps shall be in the range
+ of 0 to 32, inclusive.
* - __u8
- ``padding``
- Applications and drivers must set this to zero.
diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h
index 01ccda48d8c5..a329e086a89a 100644
--- a/include/media/hevc-ctrls.h
+++ b/include/media/hevc-ctrls.h
@@ -58,6 +58,8 @@ enum v4l2_mpeg_video_hevc_start_code {
/* The controls are not stable at the moment and will likely be reworked. */
struct v4l2_ctrl_hevc_sps {
/* ISO/IEC 23008-2, ITU-T Rec. H.265: Sequence parameter set */
+ __u8 video_parameter_set_id;
+ __u8 seq_parameter_set_id;
__u16 pic_width_in_luma_samples;
__u16 pic_height_in_luma_samples;
__u8 bit_depth_luma_minus8;
@@ -108,6 +110,7 @@ struct v4l2_ctrl_hevc_sps {

struct v4l2_ctrl_hevc_pps {
/* ISO/IEC 23008-2, ITU-T Rec. H.265: Picture parameter set */
+ __u8 pic_parameter_set_id;
__u8 num_extra_slice_header_bits;
__u8 num_ref_idx_l0_default_active_minus1;
__u8 num_ref_idx_l1_default_active_minus1;
@@ -199,7 +202,8 @@ struct v4l2_ctrl_hevc_slice_params {
__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 */
--
2.32.0