85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
/*
|
|
* Copyright (C) 2018 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.
|
|
*/
|
|
|
|
#include "chre_host/fragmented_load_transaction.h"
|
|
|
|
#include <algorithm>
|
|
|
|
namespace android {
|
|
namespace chre {
|
|
|
|
namespace {
|
|
|
|
/**
|
|
* Returns a vector containing a specific subarray of the original vector.
|
|
*
|
|
* If the ending index of the subarray exceeds that of the source vector,
|
|
* the size will be truncated to the last element of the source vector.
|
|
*
|
|
* @param source the source vector
|
|
* @param start the starting index of the subarray
|
|
* @param size the size of the subarray
|
|
*
|
|
* @return the vector containing the subarray
|
|
*/
|
|
inline std::vector<uint8_t> getSubVector(const std::vector<uint8_t> &source,
|
|
size_t start, size_t size) {
|
|
size_t end = std::min(source.size(), start + size);
|
|
return (source.size() == 0)
|
|
? std::vector<uint8_t>()
|
|
: std::vector<uint8_t>(source.begin() + start,
|
|
source.begin() + end); // [start, end)
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
FragmentedLoadTransaction::FragmentedLoadTransaction(
|
|
uint32_t transactionId, uint64_t appId, uint32_t appVersion,
|
|
uint32_t appFlags, uint32_t targetApiVersion,
|
|
const std::vector<uint8_t> &appBinary, size_t fragmentSize) {
|
|
mTransactionId = transactionId;
|
|
|
|
// Start with fragmentId at 1 since 0 is used to indicate
|
|
// legacy behavior at CHRE
|
|
size_t fragmentId = 1;
|
|
size_t byteIndex = 0;
|
|
do {
|
|
if (fragmentId == 1) {
|
|
mFragmentRequests.emplace_back(
|
|
fragmentId++, transactionId, appId, appVersion, appFlags,
|
|
targetApiVersion, appBinary.size(),
|
|
getSubVector(appBinary, byteIndex, fragmentSize));
|
|
} else {
|
|
mFragmentRequests.emplace_back(
|
|
fragmentId++, transactionId,
|
|
getSubVector(appBinary, byteIndex, fragmentSize));
|
|
}
|
|
|
|
byteIndex += fragmentSize;
|
|
} while (byteIndex < appBinary.size());
|
|
}
|
|
|
|
const FragmentedLoadRequest &FragmentedLoadTransaction::getNextRequest() {
|
|
return mFragmentRequests.at(mCurrentRequestIndex++);
|
|
}
|
|
|
|
bool FragmentedLoadTransaction::isComplete() const {
|
|
return (mCurrentRequestIndex >= mFragmentRequests.size());
|
|
}
|
|
|
|
} // namespace chre
|
|
} // namespace android
|