History

ziv-gabel ebc759d833 Initial commit: AOSP 12 vendor with modifications for Unplugged OS		2025-10-06 13:59:42 +00:00
..
puffin	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
scripts	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
src	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
.clang-format	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
Android.bp	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
BUILD.gn	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
libpuffdiff.pc	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
libpuffpatch.pc	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
LICENSE	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
Makefile	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
METADATA	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
OWNERS	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
PRESUBMIT.cfg	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
PREUPLOAD.cfg	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
README.md	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
README.version	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00
TEST_MAPPING	Initial commit: AOSP 12 vendor with modifications for Unplugged OS	2025-10-06 13:59:42 +00:00

README.md

Puffin

Source code for Puffin: A utility for deterministic DEFLATE recompression.

TODO(ahassani): Describe the directory structure and how-tos.

Glossary

Alphabet A value that occurs in the input stream. It can be either a literal:[0..255], and end of block sign [256], a length[257..285], or a distance [0..29].
Huffman code A variable length code representing the Huffman encoded of an alphabet. Huffman codes can be created uniquely using Huffman code length array.
Huffman code array An array which an array index identifies a Huffman code and the array element in that index represents the corresponding alphabet. Throughout the code, Huffman code arrays are identified by vectors with postfix hcodes_.
Huffman reverse code array An array which an array index identifies an alphabet and the array element in that index contains the Huffman code of the alphabet. Throughout the code, The Huffman reverse code arrays are identified by vectors with postfix rcodes_.
Huffman code length The number of bits in a Huffman code.
Huffman code length array An array of Huffman code lengths with the array index as the alphabet. Throughout the code, Huffman code length arrays are identified by vectors with postfix lens_.