133 lines
2.8 KiB
C++
133 lines
2.8 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 Olive Team
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Modifications Copyright (C) 2025 mikesolar
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "framemanager.h"
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#include <QDateTime>
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#include <QDebug>
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namespace olive
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{
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FrameManager *FrameManager::instance_ = nullptr;
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const int FrameManager::kFrameLifetime = 5000;
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void FrameManager::CreateInstance()
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{
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instance_ = new FrameManager();
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}
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void FrameManager::DestroyInstance()
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{
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delete instance_;
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instance_ = nullptr;
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}
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FrameManager *FrameManager::instance()
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{
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return instance_;
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}
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char *FrameManager::Allocate(int size)
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{
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if (instance()) {
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return instance()->AllocateFromPool(size);
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} else {
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return new char[size];
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}
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}
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void FrameManager::Deallocate(int size, char *buffer)
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{
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if (instance()) {
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instance()->DeallocateToPool(size, buffer);
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} else {
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delete[] buffer;
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}
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}
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FrameManager::FrameManager()
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{
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clear_timer_.setInterval(kFrameLifetime);
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connect(&clear_timer_, &QTimer::timeout, this,
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&FrameManager::GarbageCollection);
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clear_timer_.start();
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}
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char *FrameManager::AllocateFromPool(int size)
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{
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QMutexLocker locker(&mutex_);
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std::list<Buffer> &buffer_list = pool_[size];
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char *buf = nullptr;
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if (buffer_list.empty()) {
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buf = new char[size];
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} else {
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// Take this buffer from the list
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buf = buffer_list.front().data;
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buffer_list.pop_front();
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}
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return buf;
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}
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void FrameManager::DeallocateToPool(int size, char *buffer)
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{
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QMutexLocker locker(&mutex_);
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std::list<Buffer> &buffer_list = pool_[size];
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buffer_list.push_back({ QDateTime::currentMSecsSinceEpoch(), buffer });
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}
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void FrameManager::GarbageCollection()
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{
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QMutexLocker locker(&mutex_);
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qint64 min_life = QDateTime::currentMSecsSinceEpoch() - kFrameLifetime;
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for (auto it = pool_.begin(); it != pool_.end(); it++) {
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std::list<Buffer> &list = it->second;
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while (list.size() > 0 && list.front().time < min_life) {
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delete[] list.front().data;
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list.pop_front();
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}
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}
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}
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FrameManager::~FrameManager()
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{
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QMutexLocker locker(&mutex_);
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for (auto it = pool_.begin(); it != pool_.end(); it++) {
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std::list<Buffer> &list = it->second;
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for (auto jt = list.begin(); jt != list.end(); jt++) {
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delete[] (*jt).data;
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}
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}
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pool_.clear();
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}
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}
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