[Mp4-tech] Limitation of Max Bin Number For One MB

[Alan Yan - SH]

Dear Experts,
I have a question regarding the restriction of max bin number when CABAC
is used.
I can see from the spec, there is a limitation on the max bin number in
a NALU, but I'd like to find out if there is also a limitation for one
MB.
I searched in the spec and did not find it (there are limitations for
number of times read_bits( 1 ) is called, but it is not limitations for
number of times DecodeBin() is called). Maybe the two have some
relationship which imposed an implied limitation on the number of times
DecodeBin() is called for one MB?
I have a feeling that if there is no such limitation on the max bin
number for one MB, the time for decoding a MB will be hard to estimate
and this have a bad influence on the real-time pipeline decoding
architecture. In this way, a decoded-buffer of NALU for CABAC decoding
will be needed to balance the influence.
Thanks in advance for your help.
Best Regards,
alan
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