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