Frame Buffer and Y Cb Cr
Hello All,
I am working on a fb driver for linux in an embedded PPC setup. I
have it working as far as linux is concerned, and I also understand the video card side of the problem.
My trouble is: Linux sends me R G B and the hardware expects Y Cb
Cr. As things work through a memory-mapped file, I am at a loss for an "intelligent" way to intercept and convert these values.
Any suggestions ?
Best - Federico
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_________________________________________ -- "'Problem' is a bleak word for challenge" - Richard Fish Muad'Dib of Caladan (Federico L. Lucifredi)- Harvard University & BU http://metcs.bu.edu/~lucifred
Quoted 4 lines · In message <[email protected]> you wrote:
My trouble is: Linux sends me R G B and the hardware expects Y Cb
Cr. As things work through a memory-mapped file, I am at a loss for an "intelligent" way to intercept and convert these values.
Have a look at the arch/ppc/8xx_io/viedo* files in our old linux-2.4 tree on the CVS server - this driver is for the video contoller on a MPC823 wich needs YCbCr.
Best regards,
Wolfgang Denk
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