[daala] Can I implement entropy of AV1 encoder without back-propagation of precarry buffer?

[Knight Kim]

Hello,

I am implementing entropy HW for AV1 video codec.
I want to make the HW with the smallest precarry buffer.
Currently, aom encoder is scanning reverse direction adding precarry to
previous buffer point.
It means that I should keep all bitstreams in a tile, and scan all the
bitstreams then generate it.
At HW point of view, this kind of operation is quite inefficient.
Is there any way to implement the entropy encoder without precarry
back-propagation?
Can I determine the maximum length of back-propagation?

Thanks.
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