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Implement changes according to new spec

Lauros Pajunenrequested to merge
rtp-updates-sa4-134 into main
  • Related issues:
  • Requested reviewers:

Description of the change

Implement changes according to new spec

- 5 bits for PI size
- Only 1 byte per orientation component
- Add compact positions for ISM and reverse ISM PI

Affected operating points

  • Describe here as well as possible what operating points are affected and how
  • In minimum, there should be a status for bitstream compatibility and output bit exactness
  • For bitstream compatibility, the following levels are helpful for describing encoder
    1. Produced bitstream is BE compared to previous state.
    2. Produced bitstream is non-BE but it is fully backwards compatible for decoding. Decoded output may differ.
    3. Produced bitstream is non-BC. Old decoder cannot decode the produced bitstream correctly.
  • For output difference, use BE or non-BE. Additionally, amount of difference can be presented.

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