diff options
Diffstat (limited to 'Documentation/userspace-api/media/v4l/pixfmt-compressed.rst')
| -rw-r--r-- | Documentation/userspace-api/media/v4l/pixfmt-compressed.rst | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst index d585909bc4e2..acad5f3ca0c1 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst @@ -57,18 +57,18 @@ Compressed Formats - H264 parsed slice data, including slice headers, either with or without the start code, as extracted from the H264 bitstream. This format is adapted for stateless video decoders that implement an - H264 pipeline (using the :ref:`mem2mem` and :ref:`media-request-api`). + H264 pipeline with the :ref:`stateless_decoder`. This pixelformat has two modifiers that must be set at least once - through the ``V4L2_CID_MPEG_VIDEO_H264_DECODE_MODE`` - and ``V4L2_CID_MPEG_VIDEO_H264_START_CODE`` controls. + through the ``V4L2_CID_STATELESS_H264_DECODE_MODE`` + and ``V4L2_CID_STATELESS_H264_START_CODE`` controls. In addition, metadata associated with the frame to decode are - required to be passed through the ``V4L2_CID_MPEG_VIDEO_H264_SPS``, - ``V4L2_CID_MPEG_VIDEO_H264_PPS``, - ``V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX``, - ``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS`` and - ``V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS`` controls. See the - :ref:`associated Codec Control IDs <v4l2-mpeg-h264>`. Exactly - one output and one capture buffer must be provided for use + required to be passed through the ``V4L2_CID_STATELESS_H264_SPS``, + ``V4L2_CID_STATELESS_H264_PPS``, + ``V4L2_CID_STATELESS_H264_SCALING_MATRIX``, + ``V4L2_CID_STATELESS_H264_SLICE_PARAMS`` and + ``V4L2_CID_STATELESS_H264_DECODE_PARAMS`` controls. See the + :ref:`associated Codec Control IDs <v4l2-codec-stateless-h264>`. + Exactly one output and one capture buffer must be provided for use with this pixel format. The output buffer must contain the appropriate number of macroblocks to decode a full corresponding frame to the matching capture buffer. @@ -77,11 +77,6 @@ Compressed Formats 7.3.2.8 "Slice layer without partitioning RBSP syntax" and the following sections. - .. note:: - - This format is not yet part of the public kernel API and it - is expected to change. - * .. _V4L2-PIX-FMT-H263: - ``V4L2_PIX_FMT_H263`` @@ -196,10 +191,10 @@ Compressed Formats through the ``V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE`` and ``V4L2_CID_MPEG_VIDEO_HEVC_START_CODE`` controls. Metadata associated with the frame to decode is required to be passed - through the following controls : - * ``V4L2_CID_MPEG_VIDEO_HEVC_SPS`` - * ``V4L2_CID_MPEG_VIDEO_HEVC_PPS`` - * ``V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS`` + through the following controls: + ``V4L2_CID_MPEG_VIDEO_HEVC_SPS``, + ``V4L2_CID_MPEG_VIDEO_HEVC_PPS``, and + ``V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS``. See the :ref:`associated Codec Control IDs <v4l2-mpeg-hevc>`. Buffers associated with this pixel format must contain the appropriate number of macroblocks to decode a full corresponding frame. @@ -222,4 +217,6 @@ Compressed Formats - ``V4L2_PIX_FMT_FWHT_STATELESS`` - 'SFWH' - Same format as V4L2_PIX_FMT_FWHT but requires stateless codec implementation. - See the :ref:`associated Codec Control IDs <v4l2-mpeg-fwht>`. + Metadata associated with the frame to decode is required to be passed + through the ``V4L2_CID_STATELESS_FWHT_PARAMS`` control. + See the :ref:`associated Codec Control ID <codec-stateless-fwht>`. |