85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
/*
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* Copyright (C) 2014 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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#include <ui/FrameStats.h>
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namespace android {
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bool FrameStats::isFixedSize() const {
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return false;
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}
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size_t FrameStats::getFlattenedSize() const {
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const size_t timestampSize = sizeof(nsecs_t);
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size_t size = timestampSize;
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size += 3 * desiredPresentTimesNano.size() * timestampSize;
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return size;
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}
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status_t FrameStats::flatten(void* buffer, size_t size) const {
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if (size < getFlattenedSize()) {
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return NO_MEMORY;
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}
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nsecs_t* timestamps = reinterpret_cast<nsecs_t*>(buffer);
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const size_t timestampSize = sizeof(nsecs_t);
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size_t frameCount = desiredPresentTimesNano.size();
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memcpy(timestamps, &refreshPeriodNano, timestampSize);
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timestamps += 1;
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memcpy(timestamps, desiredPresentTimesNano.array(), frameCount * timestampSize);
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timestamps += frameCount;
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memcpy(timestamps, actualPresentTimesNano.array(), frameCount * timestampSize);
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timestamps += frameCount;
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memcpy(timestamps, frameReadyTimesNano.array(), frameCount * timestampSize);
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return NO_ERROR;
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}
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status_t FrameStats::unflatten(void const* buffer, size_t size) {
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const size_t timestampSize = sizeof(nsecs_t);
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if (size < timestampSize) {
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return NO_MEMORY;
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}
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nsecs_t const* timestamps = reinterpret_cast<nsecs_t const*>(buffer);
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size_t frameCount = (size - timestampSize) / (3 * timestampSize);
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memcpy(&refreshPeriodNano, timestamps, timestampSize);
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timestamps += 1;
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desiredPresentTimesNano.resize(frameCount);
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memcpy(desiredPresentTimesNano.editArray(), timestamps, frameCount * timestampSize);
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timestamps += frameCount;
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actualPresentTimesNano.resize(frameCount);
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memcpy(actualPresentTimesNano.editArray(), timestamps, frameCount * timestampSize);
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timestamps += frameCount;
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frameReadyTimesNano.resize(frameCount);
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memcpy(frameReadyTimesNano.editArray(), timestamps, frameCount * timestampSize);
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return NO_ERROR;
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}
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} // namespace android
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