| .. SPDX-License-Identifier: GPL-2.0 |
| |
| Guidelines for Video4Linux pixel format 4CCs |
| ============================================ |
| |
| Guidelines for Video4Linux 4CC codes defined using v4l2_fourcc() are |
| specified in this document. First of the characters defines the nature of |
| the pixel format, compression and colour space. The interpretation of the |
| other three characters depends on the first one. |
| |
| Existing 4CCs may not obey these guidelines. |
| |
| Raw bayer |
| --------- |
| |
| The following first characters are used by raw bayer formats: |
| |
| - B: raw bayer, uncompressed |
| - b: raw bayer, DPCM compressed |
| - a: A-law compressed |
| - u: u-law compressed |
| |
| 2nd character: pixel order |
| |
| - B: BGGR |
| - G: GBRG |
| - g: GRBG |
| - R: RGGB |
| |
| 3rd character: uncompressed bits-per-pixel 0--9, A-- |
| |
| 4th character: compressed bits-per-pixel 0--9, A-- |
