And copied back to mailing list again, I don't do private consults....
DSP type doesn't matter. The YUV format spec is the same over all products, it is coming from the IEC etc standards. Also: 'neutral U,V values' is 128, and Y often only uses values in the range black=16....white=240. Values outside that range may be invalid in your hardware, and we have also seen that sharp video edges ending at a value near the Y-range limit sometimes caused wraparounds in digital output filters (AFAIR the DM642 had that problem). Kind regards, Arie de Muijnck ________________________________ From: Deepak Mundra [mailto:[EMAIL PROTECTED] Sent: Tuesday, October 21, 2008 15:10 To: Arie Muijnck Subject: Re: Getting started w/ simple JPEG encoding Hi What if i am using dm644 board ??? c64x dsp Thank you 2008/10/21 Arie Muijnck <[EMAIL PROTECTED]> * So to fix that you need to convert your gray scale to YUV format - and thats simple since gray scale is just the Y component, and you would just fill zeros into the UV. Then you feed that transformed image to the codec and your output is all compressed for you. AFAIR it's "fill in 128 into the UV" ... Arie -------------------------------------------------------- CONFIDENTIALITY NOTICE - This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain information that is confidential or legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that you must not read this transmission and that any disclosure, copying, printing, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error, please immediately notify Arie de Muijnck by telephone or [EMAIL PROTECTED] and delete the original transmission and its attachments without reading or saving in any manner.
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