1Guidelines for Video4Linux pixel format 4CCs 2============================================ 3 4Guidelines for Video4Linux 4CC codes defined using v4l2_fourcc() are 5specified in this document. First of the characters defines the nature of 6the pixel format, compression and colour space. The interpretation of the 7other three characters depends on the first one. 8 9Existing 4CCs may not obey these guidelines. 10 11Raw bayer 12--------- 13 14The following first characters are used by raw bayer formats: 15 16- B: raw bayer, uncompressed 17- b: raw bayer, DPCM compressed 18- a: A-law compressed 19- u: u-law compressed 20 212nd character: pixel order 22 23- B: BGGR 24- G: GBRG 25- g: GRBG 26- R: RGGB 27 283rd character: uncompressed bits-per-pixel 0--9, A-- 29 304th character: compressed bits-per-pixel 0--9, A-- 31