On Thu 8 August 2013 17:01:10 Laurent Pinchart wrote: > The sample code erroneously scales the y1, pb and pr variables from the > [0.0 .. 1.0] and [-0.5 .. 0.5] ranges to [0 .. 255] and [-128 .. 127]. > Fix it. > > Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx> Regards, Hans > --- > Documentation/DocBook/media/v4l/pixfmt.xml | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml b/Documentation/DocBook/media/v4l/pixfmt.xml > index 99b8d2a..4babd4d 100644 > --- a/Documentation/DocBook/media/v4l/pixfmt.xml > +++ b/Documentation/DocBook/media/v4l/pixfmt.xml > @@ -391,9 +391,9 @@ clamp (double x) > else return r; > } > > -y1 = (255 / 219.0) * (Y1 - 16); > -pb = (255 / 224.0) * (Cb - 128); > -pr = (255 / 224.0) * (Cr - 128); > +y1 = (Y1 - 16) / 219.0; > +pb = (Cb - 128) / 224.0; > +pr = (Cr - 128) / 224.0; > > r = 1.0 * y1 + 0 * pb + 1.402 * pr; > g = 1.0 * y1 - 0.344 * pb - 0.714 * pr; > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
