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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