-.. -*- coding: utf-8; mode: rst -*-
+.. Permission is granted to copy, distribute and/or modify this
+.. document under the terms of the GNU Free Documentation License,
+.. Version 1.1 or any later version published by the Free Software
+.. Foundation, with no Invariant Sections, no Front-Cover Texts
+.. and no Back-Cover Texts. A copy of the license is included at
+.. Documentation/media/uapi/fdl-appendix.rst.
+..
+.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
.. _extended-controls:
``V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA (integer)``
Loop filter alpha coefficient, defined in the H264 standard.
+ This value corresponds to the slice_alpha_c0_offset_div2 slice header
+ field, and should be in the range of -6 to +6, inclusive. The actual alpha
+ offset FilterOffsetA is twice this value.
Applicable to the H264 encoder.
``V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA (integer)``
Loop filter beta coefficient, defined in the H264 standard.
+ This corresponds to the slice_beta_offset_div2 slice header field, and
+ should be in the range of -6 to +6, inclusive. The actual beta offset
+ FilterOffsetB is twice this value.
Applicable to the H264 encoder.
.. _v4l2-mpeg-video-h264-entropy-mode:
configuring a stateless hardware decoding pipeline for MPEG-2.
The bitstream parameters are defined according to :ref:`mpeg2part2`.
+ .. note::
+
+ This compound control is not yet part of the public kernel API and
+ it is expected to change.
+
.. c:type:: v4l2_ctrl_mpeg2_slice_params
.. cssclass:: longtable
Specifies quantization matrices (as extracted from the bitstream) for the
associated MPEG-2 slice data.
+ .. note::
+
+ This compound control is not yet part of the public kernel API and
+ it is expected to change.
+
.. c:type:: v4l2_ctrl_mpeg2_quantization
.. cssclass:: longtable