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/*
* Copyright 2023 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 "AlternatingImageStorage.h"
namespace aidl::android::hardware::graphics::composer3::impl {
uint8_t* AlternatingImageStorage::getRotatingScratchBuffer(std::size_t neededSize,
std::uint32_t imageIndex) {
std::size_t totalNeededSize = neededSize * kNumScratchBufferPieces;
if (mScratchBuffer.size() < totalNeededSize) {
mScratchBuffer.resize(totalNeededSize);
}
std::size_t bufferIndex = imageIndex % kNumScratchBufferPieces;
std::size_t bufferOffset = bufferIndex * neededSize;
return &mScratchBuffer[bufferOffset];
}
uint8_t* AlternatingImageStorage::getSpecialScratchBuffer(size_t neededSize) {
if (mSpecialScratchBuffer.size() < neededSize) {
mSpecialScratchBuffer.resize(neededSize);
}
return &mSpecialScratchBuffer[0];
}
} // namespace aidl::android::hardware::graphics::composer3::impl
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