projects / linux-block.git / blame
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|---|---|---|
| 5377d91f MH |
1 | .. -*- coding: utf-8; mode: rst -*- |
| 2 | ||
| 3 | ****************** | |
| 4 | Compressed Formats | |
| 5 | ****************** | |
| 6 | ||
| 7 | ||
| 8 | .. _compressed-formats: | |
| 9 | ||
| 5bd4bb78 MCC |
10 | .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| |
| 11 | ||
| 5377d91f MH |
12 | .. flat-table:: Compressed Image Formats |
| 13 | :header-rows: 1 | |
| 14 | :stub-columns: 0 | |
| 15 | :widths: 3 1 4 | |
| 16 | ||
| c2b66caf LP |
17 | * - Identifier |
| 18 | - Code | |
| 19 | - Details | |
| 20 | * .. _V4L2-PIX-FMT-JPEG: | |
| 21 | ||
| 22 | - ``V4L2_PIX_FMT_JPEG`` | |
| 23 | - 'JPEG' | |
| 24 | - TBD. See also :ref:`VIDIOC_G_JPEGCOMP <VIDIOC_G_JPEGCOMP>`, | |
| 25 | :ref:`VIDIOC_S_JPEGCOMP <VIDIOC_G_JPEGCOMP>`. | |
| 26 | * .. _V4L2-PIX-FMT-MPEG: | |
| 27 | ||
| 28 | - ``V4L2_PIX_FMT_MPEG`` | |
| 29 | - 'MPEG' | |
| 30 | - MPEG multiplexed stream. The actual format is determined by | |
| 31 | extended control ``V4L2_CID_MPEG_STREAM_TYPE``, see | |
| 32 | :ref:`mpeg-control-id`. | |
| 33 | * .. _V4L2-PIX-FMT-H264: | |
| 34 | ||
| 35 | - ``V4L2_PIX_FMT_H264`` | |
| 36 | - 'H264' | |
| 37 | - H264 video elementary stream with start codes. | |
| 38 | * .. _V4L2-PIX-FMT-H264-NO-SC: | |
| 39 | ||
| 40 | - ``V4L2_PIX_FMT_H264_NO_SC`` | |
| 41 | - 'AVC1' | |
| 42 | - H264 video elementary stream without start codes. | |
| 43 | * .. _V4L2-PIX-FMT-H264-MVC: | |
| 44 | ||
| 45 | - ``V4L2_PIX_FMT_H264_MVC`` | |
| 46 | - 'M264' | |
| 47 | - H264 MVC video elementary stream. | |
| 48 | * .. _V4L2-PIX-FMT-H263: | |
| 49 | ||
| 50 | - ``V4L2_PIX_FMT_H263`` | |
| 51 | - 'H263' | |
| 52 | - H263 video elementary stream. | |
| 53 | * .. _V4L2-PIX-FMT-MPEG1: | |
| 54 | ||
| 55 | - ``V4L2_PIX_FMT_MPEG1`` | |
| 56 | - 'MPG1' | |
| 57 | - MPEG1 video elementary stream. | |
| 58 | * .. _V4L2-PIX-FMT-MPEG2: | |
| 59 | ||
| 60 | - ``V4L2_PIX_FMT_MPEG2`` | |
| 61 | - 'MPG2' | |
| 62 | - MPEG2 video elementary stream. | |
| c27bb30e PK |
63 | * .. _V4L2-PIX-FMT-MPEG2-SLICE: |
| 64 | ||
| 65 | - ``V4L2_PIX_FMT_MPEG2_SLICE`` | |
| 66 | - 'MG2S' | |
| 67 | - MPEG-2 parsed slice data, as extracted from the MPEG-2 bitstream. | |
| 68 | This format is adapted for stateless video decoders that implement a | |
| 69 | MPEG-2 pipeline (using the :ref:`codec` and :ref:`media-request-api`). | |
| 70 | Metadata associated with the frame to decode is required to be passed | |
| 71 | through the ``V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS`` control and | |
| 72 | quantization matrices can optionally be specified through the | |
| 73 | ``V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION`` control. | |
| 74 | See the :ref:`associated Codec Control IDs <v4l2-mpeg-mpeg2>`. | |
| 75 | Exactly one output and one capture buffer must be provided for use with | |
| 76 | this pixel format. The output buffer must contain the appropriate number | |
| 77 | of macroblocks to decode a full corresponding frame to the matching | |
| 78 | capture buffer. | |
| c2b66caf LP |
79 | * .. _V4L2-PIX-FMT-MPEG4: |
| 80 | ||
| 81 | - ``V4L2_PIX_FMT_MPEG4`` | |
| 82 | - 'MPG4' | |
| 83 | - MPEG4 video elementary stream. | |
| 84 | * .. _V4L2-PIX-FMT-XVID: | |
| 85 | ||
| 86 | - ``V4L2_PIX_FMT_XVID`` | |
| 87 | - 'XVID' | |
| 88 | - Xvid video elementary stream. | |
| 89 | * .. _V4L2-PIX-FMT-VC1-ANNEX-G: | |
| 90 | ||
| 91 | - ``V4L2_PIX_FMT_VC1_ANNEX_G`` | |
| 92 | - 'VC1G' | |
| 93 | - VC1, SMPTE 421M Annex G compliant stream. | |
| 94 | * .. _V4L2-PIX-FMT-VC1-ANNEX-L: | |
| 95 | ||
| 96 | - ``V4L2_PIX_FMT_VC1_ANNEX_L`` | |
| 97 | - 'VC1L' | |
| 98 | - VC1, SMPTE 421M Annex L compliant stream. | |
| 99 | * .. _V4L2-PIX-FMT-VP8: | |
| 100 | ||
| 101 | - ``V4L2_PIX_FMT_VP8`` | |
| 102 | - 'VP80' | |
| 103 | - VP8 video elementary stream. | |
| 988fcf0c TL |
104 | * .. _V4L2-PIX-FMT-VP9: |
| 105 | ||
| 106 | - ``V4L2_PIX_FMT_VP9`` | |
| 107 | - 'VP90' | |
| 108 | - VP9 video elementary stream. | |
| 49f60752 SM |
109 | * .. _V4L2-PIX-FMT-HEVC: |
| 110 | ||
| 111 | - ``V4L2_PIX_FMT_HEVC`` | |
| 112 | - 'HEVC' | |
| 113 | - HEVC/H.265 video elementary stream. | |
| 62c3fce0 HV |
114 | * .. _V4L2-PIX-FMT-FWHT: |
| 115 | ||
| 116 | - ``V4L2_PIX_FMT_FWHT`` | |
| 117 | - 'FWHT' | |
| 118 | - Video elementary stream using a codec based on the Fast Walsh Hadamard | |
| 119 | Transform. This codec is implemented by the vicodec ('Virtual Codec') | |
| 21abebf0 | 120 | driver. See the codec-fwht.h header for more details. |