68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop 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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It 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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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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#include "media/media_clip_implementation.h"
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namespace Media {
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namespace Clip {
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namespace internal {
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class QtGifReaderImplementation : public ReaderImplementation {
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public:
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QtGifReaderImplementation(FileLocation *location, QByteArray *data);
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ReadResult readFramesTill(TimeMs frameMs, TimeMs systemMs) override;
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TimeMs frameRealTime() const override;
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TimeMs framePresentationTime() const override;
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bool renderFrame(QImage &to, bool &hasAlpha, const QSize &size) override;
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TimeMs durationMs() const override;
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bool hasAudio() const override {
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return false;
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}
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bool start(Mode mode, TimeMs &positionMs) override;
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~QtGifReaderImplementation();
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private:
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bool jumpToStart();
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ReadResult readNextFrame();
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Mode _mode = Mode::Normal;
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std::unique_ptr<QImageReader> _reader;
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int _framesLeft = 0;
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TimeMs _frameRealTime = 0;
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TimeMs _frameTime = 0;
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int _frameDelay = 0;
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QImage _frame;
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};
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} // namespace internal
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} // namespace Clip
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} // namespace Media
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