diff options
| author | Amin Hassani <ahassani@google.com> | 2017-11-09 13:46:56 -0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-11-22 17:29:40 -0800 |
| commit | efa62d959cf8f225477ab85d8ff42d5150007cf8 (patch) | |
| tree | fc0c2b20c5fbf01e6ca2c53d3441f8a90524cd6a /scripts/update_payload/common.py | |
| parent | 02855c25944b8d64e569e9e8051be514acf40438 (diff) | |
update_engine: Adds BROTLI_BSDIFF operation
Brotli compression creates on average 10%-20% smaller output than bzip2
in addition to having faster decompressor. With recent changes in bsdiff
to compress the its patch with brotli, we can use it in the
update_engine as a new operation BROTLI_BSDIFF. This operation will be
turned on in minor version 4. However, this CL only adds support for it
in the client. It will not generate BROTLI_BSDIFF operations yet.
BUG=chromium:783437
TEST=unittests pass for both update_engine and update_payload;
'brillo_update_payload {generate|verify}' passes;
'scripts/paycheck.py payload.delta' passes;
Change-Id: Ie791ba5431561c95de6fbc031a8196dbfd912288
Reviewed-on: https://chromium-review.googlesource.com/764791
Commit-Ready: Amin Hassani <ahassani@chromium.org>
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Ben Chan <benchan@chromium.org>
Diffstat (limited to 'scripts/update_payload/common.py')
| -rw-r--r-- | scripts/update_payload/common.py | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/scripts/update_payload/common.py b/scripts/update_payload/common.py index bab8a4f0..eaf06115 100644 --- a/scripts/update_payload/common.py +++ b/scripts/update_payload/common.py @@ -46,8 +46,9 @@ class OpType(object): DISCARD = _CLASS.DISCARD REPLACE_XZ = _CLASS.REPLACE_XZ PUFFDIFF = _CLASS.PUFFDIFF + BROTLI_BSDIFF = _CLASS.BROTLI_BSDIFF ALL = (REPLACE, REPLACE_BZ, MOVE, BSDIFF, SOURCE_COPY, SOURCE_BSDIFF, ZERO, - DISCARD, REPLACE_XZ, PUFFDIFF) + DISCARD, REPLACE_XZ, PUFFDIFF, BROTLI_BSDIFF) NAMES = { REPLACE: 'REPLACE', REPLACE_BZ: 'REPLACE_BZ', @@ -59,6 +60,7 @@ class OpType(object): DISCARD: 'DISCARD', REPLACE_XZ: 'REPLACE_XZ', PUFFDIFF: 'PUFFDIFF', + BROTLI_BSDIFF: 'BROTLI_BSDIFF', } def __init__(self): |