tdesktop/Telegram/SourceFiles/media/media_clip_qtgif.h

55 lines
1.2 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#pragma once
#include "media/media_clip_implementation.h"
namespace Media {
namespace Clip {
namespace internal {
class QtGifReaderImplementation : public ReaderImplementation {
public:
QtGifReaderImplementation(FileLocation *location, QByteArray *data);
ReadResult readFramesTill(TimeMs frameMs, TimeMs systemMs) override;
TimeMs frameRealTime() const override;
TimeMs framePresentationTime() const override;
bool renderFrame(QImage &to, bool &hasAlpha, const QSize &size) override;
TimeMs durationMs() const override;
bool hasAudio() const override {
return false;
}
bool start(Mode mode, TimeMs &positionMs) override;
~QtGifReaderImplementation();
private:
bool jumpToStart();
ReadResult readNextFrame();
Mode _mode = Mode::Normal;
std::unique_ptr<QImageReader> _reader;
int _framesLeft = 0;
TimeMs _frameRealTime = 0;
TimeMs _frameTime = 0;
int _frameDelay = 0;
QImage _frame;
};
} // namespace internal
} // namespace Clip
} // namespace Media