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[non-BE] [non-IO] [split-non-BE] Number of objects signaling correction in OMASA LBR fix 1074

vasilache requested to merge 1074-number-of-objects-signaling-correction-in-omasa-low-rate into main
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Reason why this change is needed

  • When signaling the number of objects, in the low bitrate OMASA, prerendering coding mode, for the cases where the number of objects should be written on 2 bits only, an extra bit is redundantly written.

Description of the change

  • The 3 and 4 objects are signaled with 2 bits (instead of 3) and only the 1 and 2 objects are signaled with 3 bits.

Affected operating points

  • non-BE, non-IO, non-BC in OMASA low bit rates, where pre-rendering coding mode is used (until 16.4kbps for 1 obj and up until 24.4kbps for 2,3,4 objects.

Related to #1074 (closed)

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