82 lines
2.2 KiB
C++
82 lines
2.2 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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class FileLocation;
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namespace Media {
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namespace Clip {
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namespace internal {
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class ReaderImplementation {
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public:
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ReaderImplementation(FileLocation *location, QByteArray *data)
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: _location(location)
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, _data(data) {
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}
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enum class Mode {
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OnlyGifv,
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Silent,
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Normal,
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};
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enum class ReadResult {
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Success,
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Error,
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EndOfFile,
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};
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// Read frames till current frame will have presentation time > frameMs, systemMs = getms().
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virtual ReadResult readFramesTill(TimeMs frameMs, TimeMs systemMs) = 0;
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// Get current frame real and presentation time.
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virtual TimeMs frameRealTime() const = 0;
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virtual TimeMs framePresentationTime() const = 0;
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// Render current frame to an image with specific size.
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virtual bool renderFrame(QImage &to, bool &hasAlpha, const QSize &size) = 0;
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virtual TimeMs durationMs() const = 0;
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virtual bool hasAudio() const = 0;
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virtual void pauseAudio() = 0;
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virtual void resumeAudio() = 0;
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virtual bool start(Mode mode, TimeMs &positionMs) = 0;
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virtual ~ReaderImplementation() {
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}
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int64 dataSize() const {
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return _dataSize;
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}
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protected:
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FileLocation *_location;
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QByteArray *_data;
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QFile _file;
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QBuffer _buffer;
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QIODevice *_device = nullptr;
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int64 _dataSize = 0;
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void initDevice();
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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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