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Linux/Documentation/userspace-api/media/v4l/fourcc.rst

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  1 .. SPDX-License-Identifier: GPL-2.0
  2 
  3 Guidelines for Video4Linux pixel format 4CCs
  4 ============================================
  5 
  6 Guidelines for Video4Linux 4CC codes defined using v4l2_fourcc() are
  7 specified in this document. First of the characters defines the nature of
  8 the pixel format, compression and colour space. The interpretation of the
  9 other three characters depends on the first one.
 10 
 11 Existing 4CCs may not obey these guidelines.
 12 
 13 Raw bayer
 14 ---------
 15 
 16 The following first characters are used by raw bayer formats:
 17 
 18 - B: raw bayer, uncompressed
 19 - b: raw bayer, DPCM compressed
 20 - a: A-law compressed
 21 - u: u-law compressed
 22 
 23 2nd character: pixel order
 24 
 25 - B: BGGR
 26 - G: GBRG
 27 - g: GRBG
 28 - R: RGGB
 29 
 30 3rd character: uncompressed bits-per-pixel 0--9, A--
 31 
 32 4th character: compressed bits-per-pixel 0--9, A--

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