diff options
| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-17 22:03:31 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-18 04:41:07 +0300 |
| commit | 70c95242c45d7e6af4c0b4aba4119280eb3aa5de (patch) | |
| tree | 5f53f78613b175a3798a7aafe06d7fa5e292a391 /Documentation/media/v4l-drivers/fourcc.rst | |
| parent | bde8bea759f45f24392d3114f550e05ec9635bd9 (diff) | |
| download | linux-70c95242c45d7e6af4c0b4aba4119280eb3aa5de.tar.xz | |
[media] doc-rst: Move v4l docs to media/v4l-drivers
Move V4L documentation files to media/v4l-drivers. Those aren't
core stuff, so they don't fit at the kAPI document.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media/v4l-drivers/fourcc.rst')
| -rw-r--r-- | Documentation/media/v4l-drivers/fourcc.rst | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/media/v4l-drivers/fourcc.rst b/Documentation/media/v4l-drivers/fourcc.rst new file mode 100644 index 000000000000..41241af1ebfe --- /dev/null +++ b/Documentation/media/v4l-drivers/fourcc.rst @@ -0,0 +1,32 @@ +Guidelines for Linux4Linux 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. + +Formats +======= + +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-- |