1.. SPDX-License-Identifier: GPL-2.0 2.. c:namespace:: V4L 3 4Guidelines for Video4Linux pixel format 4CCs 5============================================ 6 7Guidelines for Video4Linux 4CC codes defined using v4l2_fourcc() are 8specified in this document. First of the characters defines the nature of 9the pixel format, compression and colour space. The interpretation of the 10other three characters depends on the first one. 11 12Existing 4CCs may not obey these guidelines. 13 14Raw bayer 15--------- 16 17The following first characters are used by raw bayer formats: 18 19- B: raw bayer, uncompressed 20- b: raw bayer, DPCM compressed 21- a: A-law compressed 22- u: u-law compressed 23 242nd character: pixel order 25 26- B: BGGR 27- G: GBRG 28- g: GRBG 29- R: RGGB 30 313rd character: uncompressed bits-per-pixel 0--9, A-- 32 334th character: compressed bits-per-pixel 0--9, A-- 34