From: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
The layout of the compound controls has changed to fix
32/64 bit alignment issues and the use of timestamps instead of
buffer indices to refer to buffers.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
---
.../media/uapi/v4l/extended-controls.rst | 28 +++++++++++--------
1 file changed, 17 insertions(+), 11 deletions(-)
diff --git a/Documentation/media/uapi/v4l/extended-controls.rst b/Documentation/media/uapi/v4l/extended-controls.rst
index c471408d9bf9..78d042755322 100644
--- a/Documentation/media/uapi/v4l/extended-controls.rst
+++ b/Documentation/media/uapi/v4l/extended-controls.rst
@@ -1546,17 +1546,23 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type -
- ``picture``
- Structure with MPEG-2 picture metadata, merging relevant fields from
the picture header and picture coding extension parts of the bitstream.
- * - __u8
+ * - __u64
+ - ``backward_ref_ts``
+ - Timestamp of the V4L2 capture buffer to use as backward reference, used
+ with B-coded and P-coded frames. The timestamp refers to the
+ ``timestamp`` field in struct :c:type:`v4l2_buffer`. Use the
+ :c:func:`v4l2_timeval_to_ns()` function to convert the struct
+ :c:type:`timeval` in struct :c:type:`v4l2_buffer` to a __u64.
+ * - __u64
+ - ``forward_ref_ts``
+ - Timestamp for the V4L2 capture buffer to use as forward reference, used
+ with B-coded frames. The timestamp refers to the ``timestamp`` field in
+ struct :c:type:`v4l2_buffer`. Use the :c:func:`v4l2_timeval_to_ns()`
+ function to convert the struct :c:type:`timeval` in struct
+ :c:type:`v4l2_buffer` to a __u64.
+ * - __u32
- ``quantiser_scale_code``
- Code used to determine the quantization scale to use for the IDCT.
- * - __u8
- - ``backward_ref_index``
- - Index for the V4L2 buffer to use as backward reference, used with
- B-coded and P-coded frames.
- * - __u8
- - ``forward_ref_index``
- - Index for the V4L2 buffer to use as forward reference, used with
- B-coded frames.
.. c:type:: v4l2_mpeg2_sequence
@@ -1577,7 +1583,7 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type -
- ``vbv_buffer_size``
- Used to calculate the required size of the video buffering verifier,
defined (in bits) as: 16 * 1024 * vbv_buffer_size.
- * - __u8
+ * - __u16
- ``profile_and_level_indication``
- The current profile and level indication as extracted from the
bitstream.
@@ -1635,7 +1641,7 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type -
* - __u8
- ``repeat_first_field``
- This flag affects the decoding process of progressive frames.
- * - __u8
+ * - __u16
- ``progressive_frame``
- Indicates whether the current frame is progressive.
--
2.19.2
