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<p class=MsoPlainText><font size=1 face="Courier New"><span lang=EN-GB
style='font-size:8.0pt'>> To be honest I somehow avoided being the person to
implement FMO in any of</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> our projects (maybe I avoided it on purpose ;)), but from what I
can</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> gather</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> from others it isn't as horrible as it first appears. There are two
nasty</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> bits that I am aware of:</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> </span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> 1. We write hardware decoders and the amount of expensive on-chip
RAM</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> required to calculate the availability of macroblock neighbours is
just</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span lang=EN-GB
style='font-size:8.0pt'>> too much to justify for this one task. </span></font><font
size=1><span style='font-size:8.0pt'>So this calculation has to be done in</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> software and beforehand and downloaded to the chip, which is a
complexity</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> that we don't like.</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> </span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> 2. Without FMO the loop filter can work in the pipeline filtering
each</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> macroblock as it is decoded and without requiring too much RAM.
With FMO</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> this cannot be done and solving this really messes up the design.</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> Cheers,</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'>> -Ryan</span></font></p>
<p class=MsoPlainText><font size=1 face="Courier New"><span style='font-size:
8.0pt'> </span></font></p>
<p class=MsoPlainText><font size=1 color=blue face="Courier New"><span
lang=EN-GB style='font-size:8.0pt;color:blue'>Thank you for taking the time to
explain. </span></font></p>
<p class=MsoPlainText><font size=1 color=blue face="Courier New"><span
lang=EN-GB style='font-size:8.0pt;color:blue'>Regards</span></font></p>
<p class=MsoPlainText><font size=1 color=blue face="Courier New"><span
lang=EN-GB style='font-size:8.0pt;color:blue'>
Peter</span></font></p>
<p class=MsoPlainText><font size=1 color=blue face="Courier New"><span
lang=EN-GB style='font-size:8.0pt;color:blue'> </span></font></p>
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