121 lines
3.4 KiB
ReStructuredText
121 lines
3.4 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
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******************
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Compressed Formats
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******************
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.. _compressed-formats:
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.. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}|
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.. flat-table:: Compressed Image Formats
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:header-rows: 1
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:stub-columns: 0
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:widths: 3 1 4
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* - Identifier
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- Code
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- Details
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* .. _V4L2-PIX-FMT-JPEG:
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- ``V4L2_PIX_FMT_JPEG``
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- 'JPEG'
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- TBD. See also :ref:`VIDIOC_G_JPEGCOMP <VIDIOC_G_JPEGCOMP>`,
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:ref:`VIDIOC_S_JPEGCOMP <VIDIOC_G_JPEGCOMP>`.
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* .. _V4L2-PIX-FMT-MPEG:
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- ``V4L2_PIX_FMT_MPEG``
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- 'MPEG'
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- MPEG multiplexed stream. The actual format is determined by
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extended control ``V4L2_CID_MPEG_STREAM_TYPE``, see
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:ref:`mpeg-control-id`.
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* .. _V4L2-PIX-FMT-H264:
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- ``V4L2_PIX_FMT_H264``
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- 'H264'
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- H264 video elementary stream with start codes.
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* .. _V4L2-PIX-FMT-H264-NO-SC:
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- ``V4L2_PIX_FMT_H264_NO_SC``
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- 'AVC1'
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- H264 video elementary stream without start codes.
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* .. _V4L2-PIX-FMT-H264-MVC:
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- ``V4L2_PIX_FMT_H264_MVC``
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- 'M264'
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- H264 MVC video elementary stream.
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* .. _V4L2-PIX-FMT-H263:
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- ``V4L2_PIX_FMT_H263``
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- 'H263'
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- H263 video elementary stream.
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* .. _V4L2-PIX-FMT-MPEG1:
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- ``V4L2_PIX_FMT_MPEG1``
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- 'MPG1'
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- MPEG1 video elementary stream.
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* .. _V4L2-PIX-FMT-MPEG2:
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- ``V4L2_PIX_FMT_MPEG2``
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- 'MPG2'
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- MPEG2 video elementary stream.
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* .. _V4L2-PIX-FMT-MPEG2-SLICE:
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- ``V4L2_PIX_FMT_MPEG2_SLICE``
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- 'MG2S'
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- MPEG-2 parsed slice data, as extracted from the MPEG-2 bitstream.
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This format is adapted for stateless video decoders that implement a
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MPEG-2 pipeline (using the :ref:`codec` and :ref:`media-request-api`).
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Metadata associated with the frame to decode is required to be passed
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through the ``V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS`` control and
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quantization matrices can optionally be specified through the
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``V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION`` control.
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See the :ref:`associated Codec Control IDs <v4l2-mpeg-mpeg2>`.
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Exactly one output and one capture buffer must be provided for use with
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this pixel format. The output buffer must contain the appropriate number
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of macroblocks to decode a full corresponding frame to the matching
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capture buffer.
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* .. _V4L2-PIX-FMT-MPEG4:
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- ``V4L2_PIX_FMT_MPEG4``
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- 'MPG4'
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- MPEG4 video elementary stream.
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* .. _V4L2-PIX-FMT-XVID:
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- ``V4L2_PIX_FMT_XVID``
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- 'XVID'
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- Xvid video elementary stream.
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* .. _V4L2-PIX-FMT-VC1-ANNEX-G:
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- ``V4L2_PIX_FMT_VC1_ANNEX_G``
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- 'VC1G'
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- VC1, SMPTE 421M Annex G compliant stream.
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* .. _V4L2-PIX-FMT-VC1-ANNEX-L:
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- ``V4L2_PIX_FMT_VC1_ANNEX_L``
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- 'VC1L'
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- VC1, SMPTE 421M Annex L compliant stream.
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* .. _V4L2-PIX-FMT-VP8:
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- ``V4L2_PIX_FMT_VP8``
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- 'VP80'
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- VP8 video elementary stream.
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* .. _V4L2-PIX-FMT-VP9:
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- ``V4L2_PIX_FMT_VP9``
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- 'VP90'
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- VP9 video elementary stream.
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* .. _V4L2-PIX-FMT-HEVC:
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- ``V4L2_PIX_FMT_HEVC``
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- 'HEVC'
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- HEVC/H.265 video elementary stream.
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* .. _V4L2-PIX-FMT-FWHT:
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- ``V4L2_PIX_FMT_FWHT``
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- 'FWHT'
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- Video elementary stream using a codec based on the Fast Walsh Hadamard
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Transform. This codec is implemented by the vicodec ('Virtual Codec')
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driver. See the vicodec-codec.h header for more details.
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