Module: Omnizip::Algorithms::PPMd8::Constants

Included in:

Omnizip::Algorithms::PPMd8, Context, Decoder, Encoder, Model, RestorationMethod

Defined in:

lib/omnizip/algorithms/ppmd8/constants.rb

Overview

Constants specific to PPMd8 algorithm

PPMd8 adds restoration methods and enhanced memory management compared to PPMd7.

Constant Summary

RESTORE_METHOD_RESTART =

Restoration method constants

0

RESTORE_METHOD_CUT_OFF =

1

DEFAULT_RESTORE_METHOD =

RESTORE_METHOD_RESTART

PROB_TOTAL =

Probability scaling factors

2048

MAX_FREQ =

124

INIT_ESCAPE_FREQ =

1

SEE_CONTEXTS =

Context management

25

SUFFIX_CONTEXTS =

32

INT_BITS =

Update intervals

7

PERIOD_BITS =

7

BIN_SCALE =

1 << 13

INTERVAL =

1 << INT_BITS

UNIT_SIZE =

Memory management

12

MAX_STATES =

256

UNIT_ALLOC_SIZE =

12

GLUE_COUNT_THRESHOLD =

PPMd8-specific: glue counting threshold

255