281 lines
9.2 KiB
ReStructuredText
281 lines
9.2 KiB
ReStructuredText
|
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
|
|||
|
|
|
|||
|
|
.. _pixfmt-reserved:
|
|||
|
|
|
|||
|
|
***************************
|
|||
|
|
Reserved Format Identifiers
|
|||
|
|
***************************
|
|||
|
|
|
|||
|
|
These formats are not defined by this specification, they are just
|
|||
|
|
listed for reference and to avoid naming conflicts. If you want to
|
|||
|
|
register your own format, send an e-mail to the linux-media mailing list
|
|||
|
|
`https://linuxtv.org/lists.php <https://linuxtv.org/lists.php>`__
|
|||
|
|
for inclusion in the ``videodev2.h`` file. If you want to share your
|
|||
|
|
format with other developers add a link to your documentation and send a
|
|||
|
|
copy to the linux-media mailing list for inclusion in this section. If
|
|||
|
|
you think your format should be listed in a standard format section
|
|||
|
|
please make a proposal on the linux-media mailing list.
|
|||
|
|
|
|||
|
|
|
|||
|
|
.. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.5cm}|
|
|||
|
|
|
|||
|
|
.. raw:: latex
|
|||
|
|
|
|||
|
|
\small
|
|||
|
|
|
|||
|
|
.. _reserved-formats:
|
|||
|
|
|
|||
|
|
.. flat-table:: Reserved Image Formats
|
|||
|
|
:header-rows: 1
|
|||
|
|
:stub-columns: 0
|
|||
|
|
:widths: 3 1 4
|
|||
|
|
|
|||
|
|
* - Identifier
|
|||
|
|
- Code
|
|||
|
|
- Details
|
|||
|
|
* .. _V4L2-PIX-FMT-DV:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_DV``
|
|||
|
|
- 'dvsd'
|
|||
|
|
- unknown
|
|||
|
|
* .. _V4L2-PIX-FMT-ET61X251:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_ET61X251``
|
|||
|
|
- 'E625'
|
|||
|
|
- Compressed format of the ET61X251 driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-HI240:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_HI240``
|
|||
|
|
- 'HI24'
|
|||
|
|
- 8 bit RGB format used by the BTTV driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-CPIA1:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_CPIA1``
|
|||
|
|
- 'CPIA'
|
|||
|
|
- YUV format used by the gspca cpia1 driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-JPGL:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_JPGL``
|
|||
|
|
- 'JPGL'
|
|||
|
|
- JPEG-Light format (Pegasus Lossless JPEG) used in Divio webcams NW
|
|||
|
|
80x.
|
|||
|
|
* .. _V4L2-PIX-FMT-SPCA501:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_SPCA501``
|
|||
|
|
- 'S501'
|
|||
|
|
- YUYV per line used by the gspca driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-SPCA505:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_SPCA505``
|
|||
|
|
- 'S505'
|
|||
|
|
- YYUV per line used by the gspca driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-SPCA508:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_SPCA508``
|
|||
|
|
- 'S508'
|
|||
|
|
- YUVY per line used by the gspca driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-SPCA561:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_SPCA561``
|
|||
|
|
- 'S561'
|
|||
|
|
- Compressed GBRG Bayer format used by the gspca driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-PAC207:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_PAC207``
|
|||
|
|
- 'P207'
|
|||
|
|
- Compressed BGGR Bayer format used by the gspca driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-MR97310A:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_MR97310A``
|
|||
|
|
- 'M310'
|
|||
|
|
- Compressed BGGR Bayer format used by the gspca driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-JL2005BCD:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_JL2005BCD``
|
|||
|
|
- 'JL20'
|
|||
|
|
- JPEG compressed RGGB Bayer format used by the gspca driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-OV511:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_OV511``
|
|||
|
|
- 'O511'
|
|||
|
|
- OV511 JPEG format used by the gspca driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-OV518:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_OV518``
|
|||
|
|
- 'O518'
|
|||
|
|
- OV518 JPEG format used by the gspca driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-PJPG:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_PJPG``
|
|||
|
|
- 'PJPG'
|
|||
|
|
- Pixart 73xx JPEG format used by the gspca driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-SE401:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_SE401``
|
|||
|
|
- 'S401'
|
|||
|
|
- Compressed RGB format used by the gspca se401 driver
|
|||
|
|
* .. _V4L2-PIX-FMT-SQ905C:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_SQ905C``
|
|||
|
|
- '905C'
|
|||
|
|
- Compressed RGGB bayer format used by the gspca driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-MJPEG:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_MJPEG``
|
|||
|
|
- 'MJPG'
|
|||
|
|
- Compressed format used by the Zoran driver
|
|||
|
|
* .. _V4L2-PIX-FMT-PWC1:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_PWC1``
|
|||
|
|
- 'PWC1'
|
|||
|
|
- Compressed format of the PWC driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-PWC2:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_PWC2``
|
|||
|
|
- 'PWC2'
|
|||
|
|
- Compressed format of the PWC driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-SN9C10X:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_SN9C10X``
|
|||
|
|
- 'S910'
|
|||
|
|
- Compressed format of the SN9C102 driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-SN9C20X-I420:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_SN9C20X_I420``
|
|||
|
|
- 'S920'
|
|||
|
|
- YUV 4:2:0 format of the gspca sn9c20x driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-SN9C2028:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_SN9C2028``
|
|||
|
|
- 'SONX'
|
|||
|
|
- Compressed GBRG bayer format of the gspca sn9c2028 driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-STV0680:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_STV0680``
|
|||
|
|
- 'S680'
|
|||
|
|
- Bayer format of the gspca stv0680 driver.
|
|||
|
|
* .. _V4L2-PIX-FMT-WNVA:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_WNVA``
|
|||
|
|
- 'WNVA'
|
|||
|
|
- Used by the Winnov Videum driver,
|
|||
|
|
`http://www.thedirks.org/winnov/ <http://www.thedirks.org/winnov/>`__
|
|||
|
|
* .. _V4L2-PIX-FMT-TM6000:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_TM6000``
|
|||
|
|
- 'TM60'
|
|||
|
|
- Used by Trident tm6000
|
|||
|
|
* .. _V4L2-PIX-FMT-CIT-YYVYUY:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_CIT_YYVYUY``
|
|||
|
|
- 'CITV'
|
|||
|
|
- Used by xirlink CIT, found at IBM webcams.
|
|||
|
|
|
|||
|
|
Uses one line of Y then 1 line of VYUY
|
|||
|
|
* .. _V4L2-PIX-FMT-KONICA420:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_KONICA420``
|
|||
|
|
- 'KONI'
|
|||
|
|
- Used by Konica webcams.
|
|||
|
|
|
|||
|
|
YUV420 planar in blocks of 256 pixels.
|
|||
|
|
* .. _V4L2-PIX-FMT-YYUV:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_YYUV``
|
|||
|
|
- 'YYUV'
|
|||
|
|
- unknown
|
|||
|
|
* .. _V4L2-PIX-FMT-Y4:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_Y4``
|
|||
|
|
- 'Y04 '
|
|||
|
|
- Old 4-bit greyscale format. Only the most significant 4 bits of
|
|||
|
|
each byte are used, the other bits are set to 0.
|
|||
|
|
* .. _V4L2-PIX-FMT-Y6:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_Y6``
|
|||
|
|
- 'Y06 '
|
|||
|
|
- Old 6-bit greyscale format. Only the most significant 6 bits of
|
|||
|
|
each byte are used, the other bits are set to 0.
|
|||
|
|
* .. _V4L2-PIX-FMT-S5C-UYVY-JPG:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_S5C_UYVY_JPG``
|
|||
|
|
- 'S5CI'
|
|||
|
|
- Two-planar format used by Samsung S5C73MX cameras. The first plane
|
|||
|
|
contains interleaved JPEG and UYVY image data, followed by meta
|
|||
|
|
data in form of an array of offsets to the UYVY data blocks. The
|
|||
|
|
actual pointer array follows immediately the interleaved JPEG/UYVY
|
|||
|
|
data, the number of entries in this array equals the height of the
|
|||
|
|
UYVY image. Each entry is a 4-byte unsigned integer in big endian
|
|||
|
|
order and it's an offset to a single pixel line of the UYVY image.
|
|||
|
|
The first plane can start either with JPEG or UYVY data chunk. The
|
|||
|
|
size of a single UYVY block equals the UYVY image's width
|
|||
|
|
multiplied by 2. The size of a JPEG chunk depends on the image and
|
|||
|
|
can vary with each line.
|
|||
|
|
|
|||
|
|
The second plane, at an offset of 4084 bytes, contains a 4-byte
|
|||
|
|
offset to the pointer array in the first plane. This offset is
|
|||
|
|
followed by a 4-byte value indicating size of the pointer array.
|
|||
|
|
All numbers in the second plane are also in big endian order.
|
|||
|
|
Remaining data in the second plane is undefined. The information
|
|||
|
|
in the second plane allows to easily find location of the pointer
|
|||
|
|
array, which can be different for each frame. The size of the
|
|||
|
|
pointer array is constant for given UYVY image height.
|
|||
|
|
|
|||
|
|
In order to extract UYVY and JPEG frames an application can
|
|||
|
|
initially set a data pointer to the start of first plane and then
|
|||
|
|
add an offset from the first entry of the pointers table. Such a
|
|||
|
|
pointer indicates start of an UYVY image pixel line. Whole UYVY
|
|||
|
|
line can be copied to a separate buffer. These steps should be
|
|||
|
|
repeated for each line, i.e. the number of entries in the pointer
|
|||
|
|
array. Anything what's in between the UYVY lines is JPEG data and
|
|||
|
|
should be concatenated to form the JPEG stream.
|
|||
|
|
* .. _V4L2-PIX-FMT-MT21C:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_MT21C``
|
|||
|
|
- 'MT21'
|
|||
|
|
- Compressed two-planar YVU420 format used by Mediatek MT8173, MT8192,
|
|||
|
|
MT8195 and more. The compression is lossless. This format have
|
|||
|
|
similitude with ``V4L2_PIX_FMT_MM21`` in term of alignment and tiling.
|
|||
|
|
It remains an opaque intermediate format and the MDP hardware must be
|
|||
|
|
used to convert ``V4L2_PIX_FMT_MT21C`` to ``V4L2_PIX_FMT_NV12M``,
|
|||
|
|
``V4L2_PIX_FMT_YUV420M`` or ``V4L2_PIX_FMT_YVU420``.
|
|||
|
|
* .. _V4L2-PIX-FMT-QC08C:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_QC08C``
|
|||
|
|
- 'QC08C'
|
|||
|
|
- Compressed Macro-tile 8-Bit YUV420 format used by Qualcomm platforms.
|
|||
|
|
It is an opaque intermediate format. The used compression is lossless
|
|||
|
|
and it is used by various multimedia hardware blocks like GPU, display
|
|||
|
|
controllers, ISP and video accelerators.
|
|||
|
|
It contains four planes for progressive video and eight planes for
|
|||
|
|
interlaced video.
|
|||
|
|
* .. _V4L2-PIX-FMT-QC10C:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_QC10C``
|
|||
|
|
- 'QC10C'
|
|||
|
|
- Compressed Macro-tile 10-Bit YUV420 format used by Qualcomm platforms.
|
|||
|
|
It is an opaque intermediate format. The used compression is lossless
|
|||
|
|
and it is used by various multimedia hardware blocks like GPU, display
|
|||
|
|
controllers, ISP and video accelerators.
|
|||
|
|
It contains four planes for progressive video.
|
|||
|
|
* .. _V4L2-PIX-FMT-AJPG:
|
|||
|
|
|
|||
|
|
- ``V4L2_PIX_FMT_AJPG``
|
|||
|
|
- 'AJPG'
|
|||
|
|
- ASPEED JPEG format used by the aspeed-video driver on Aspeed platforms,
|
|||
|
|
which is generally adapted for remote KVM.
|
|||
|
|
On each frame compression, I will compare the new frame with previous
|
|||
|
|
one to decide which macroblock's data is changed, and only the changed
|
|||
|
|
macroblocks will be compressed.
|
|||
|
|
|
|||
|
|
The implementation is based on AST2600 A3 datasheet, revision 0.9, which
|
|||
|
|
is not publicly available. Or you can reference Video stream data format
|
|||
|
|
– ASPEED mode compression of SDK_User_Guide which available on
|
|||
|
|
`github <https://github.com/AspeedTech-BMC/openbmc/releases/>`__.
|
|||
|
|
|
|||
|
|
Decoder's implementation can be found here,
|
|||
|
|
`aspeed_codec <https://github.com/AspeedTech-BMC/aspeed_codec/>`__
|
|||
|
|
.. raw:: latex
|
|||
|
|
|
|||
|
|
\normalsize
|