log2NumTokenPartitions property
log2 of the number of residual token partitions (0..3 → 1/2/4/8). Splitting tokens across multiple partitions isolates packet loss to a row-group (the decoder discards the affected partition only) and enables parallel residual decoding. Header partition (mode/MV bits) is unaffected — only DCT tokens are split.
Implementation
final int log2NumTokenPartitions;