Maximum number of PH wpred weights

[bheng]

Should the range of num_lx_weights in the weighted prediction parameters semantics be limited to a max of 15?

The current range is as follows:

"The value of num_l0_weights shall be in the range of 0 to num_ref_entries[ 0 ][ RplsIdx[ 0 ] ], inclusive."

I understand the reason to allow num_ref_entries to be as large as 29. However, only the first 15 of those can ever be active (num_ref_idx_default_active <= 15), so as far as I can tell, weight 16 to 29 could never be used.

Suggest changing the range to:

"The value of num_l0_weights shall be in the range of 0 to MIN( 15, num_ref_entries[ 0 ][ RplsIdx[ 0 ] ] ), inclusive."

[yk]

Thanks! Your suggestion makes sense to me. Unless there is a different opinion, in which case we should have more discussions, I will make this change when I take the token next time.

[yk]

Fixed in Q2001-vE (for both num_l0_weights and num_l1_weights).