3 ms·

Parallel compression/decompression is already possible via Z_SYNC_FLUSH.

• Retr0id 1y ago
  Parallel decompression of Z_SYNC_FLUSH'd data is not possible without additional metadata to tell you where the sync points are.
  • meindnoch 1y ago
    True. Although this can be mitigated in a backwards compatible manner, by adding a new PNG chunk that points to the locations of the sync points.
    • Retr0id 1y ago
      Yes, such a chunk is being considered for introduction in future PNG revisions.