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media: uapi: hevc: Add segment address field

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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>
This commit is contained in:
Jernej Skrabec
2019-12-13 17:04:27 +01:00
committed by popcornmix
parent fc5e35c8b8
commit b5e5c2a843
2 changed files with 8 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
Documentation/media/uapi/v4l/ext-ctrls-codec.rst
View File

@@ -3991,6 +3991,9 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
* - __u32
- ``data_bit_offset``
- Offset (in bits) to the video data in the current slice data.
* - __u32
- ``slice_segment_addr``
-
* - __u8
- ``nal_unit_type``
-
@@ -4068,7 +4071,7 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
- ``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]``

5
include/media/hevc-ctrls.h
View File

@@ -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];