blob: 198fcc205878a14690ae5f519ee07161b3108386 [file] [log] [blame]
#
# Copyright 2019 The Android Open-Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import os
from common import BlockDifference, EmptyImage, GetUserImage
# The joint list of user image partitions of source and target builds.
# - Items should be added to the list if new dynamic partitions are added.
# - Items should not be removed from the list even if dynamic partitions are
# deleted. When generating an incremental OTA package, this script needs to
# know that an image is present in source build but not in target build.
USERIMAGE_PARTITIONS = [
"product",
"system_ext",
]
def GetUserImages(input_tmp, input_zip):
return {partition: GetUserImage(partition, input_tmp, input_zip)
for partition in USERIMAGE_PARTITIONS
if os.path.exists(os.path.join(input_tmp,
"IMAGES", partition + ".img"))}
def FullOTA_GetBlockDifferences(info):
images = GetUserImages(info.input_tmp, info.input_zip)
return [BlockDifference(partition, image)
for partition, image in images.items()]
def IncrementalOTA_GetBlockDifferences(info):
source_images = GetUserImages(info.source_tmp, info.source_zip)
target_images = GetUserImages(info.target_tmp, info.target_zip)
# Use EmptyImage() as a placeholder for partitions that will be deleted.
for partition in source_images:
target_images.setdefault(partition, EmptyImage())
# Use source_images.get() because new partitions are not in source_images.
return [BlockDifference(partition, target_image, source_images.get(partition))
for partition, target_image in target_images.items()]