66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 Olive Team
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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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#ifndef VIEWERQUEUE_H
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#define VIEWERQUEUE_H
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#include <QLinkedList>
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#include "codec/frame.h"
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namespace olive {
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struct ViewerPlaybackFrame {
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rational timestamp;
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QVariant frame;
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};
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class ViewerQueue : public std::list<ViewerPlaybackFrame> {
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public:
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ViewerQueue() = default;
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void AppendTimewise(const ViewerPlaybackFrame& f, int playback_speed)
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{
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if (this->empty() || (this->back().timestamp < f.timestamp) == (playback_speed > 0)) {
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this->push_back(f);
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} else {
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for (auto i=this->begin(); i!=this->end(); i++) {
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if ((i->timestamp > f.timestamp) == (playback_speed > 0)) {
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this->insert(i, f);
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break;
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}
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}
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}
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}
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void PurgeBefore(const rational &time, int playback_speed)
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{
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while (!this->empty()
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&& ((playback_speed > 0 && this->front().timestamp < time) || (playback_speed < 0 && this->front().timestamp > time))) {
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this->pop_front();
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}
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}
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};
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}
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#endif // VIEWERQUEUE_H
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