Hi Jean-Philippe, On Tuesday 29 May 2012 10:24:45 jean-philippe francois wrote: > Hi, > > omap3 ISP previewer block can convert a raw bayer image into a UYVY image. > Debayering coefficient are stored in an undocumented table. In the current > form, only GRBG format are converted correctly. > > However, the other CFA arrangement can be transformed in GRBG arrangement by > shifting the image window one pixel to the left or to the bottom. > > Here is a patch against vanilla 3.2.17, that was only tested with a BGGR > arrangement. > Is it the right way to fix this issue ? That's really a hack. I'd much rather support other Bayer orders properly by modifying the CFA coefficients table. The table is arranged as 4 blocks of 144 coefficients. If I'm not mistaken (I haven't tested it), the blocks should be arranged as follows: GRBG 0 1 2 3 RGGB 1 0 3 2 BGGR 2 3 0 1 GBRG 3 2 1 0 Would you be able to test that with your BGGR sensor ? If that's correct, it shouldn't be too difficult to modify the order dynamically based on the format. -- Regards, Laurent Pinchart -- 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
