82 lines
2.1 KiB
C++
82 lines
2.1 KiB
C++
/*
|
|
This file is part of Telegram Desktop,
|
|
the official desktop version of Telegram messaging app, see https://telegram.org
|
|
|
|
Telegram Desktop is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
It is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
In addition, as a special exception, the copyright holders give permission
|
|
to link the code of portions of this program with the OpenSSL library.
|
|
|
|
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
|
|
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
|
|
*/
|
|
#pragma once
|
|
|
|
class FileLocation;
|
|
|
|
namespace Media {
|
|
namespace Clip {
|
|
namespace internal {
|
|
|
|
class ReaderImplementation {
|
|
public:
|
|
ReaderImplementation(FileLocation *location, QByteArray *data)
|
|
: _location(location)
|
|
, _data(data) {
|
|
}
|
|
enum class Mode {
|
|
Silent,
|
|
Normal,
|
|
Inspecting, // Not playing video, but reading data.
|
|
};
|
|
|
|
enum class ReadResult {
|
|
Success,
|
|
Error,
|
|
EndOfFile,
|
|
};
|
|
// Read frames till current frame will have presentation time > frameMs, systemMs = getms().
|
|
virtual ReadResult readFramesTill(TimeMs frameMs, TimeMs systemMs) = 0;
|
|
|
|
// Get current frame real and presentation time.
|
|
virtual TimeMs frameRealTime() const = 0;
|
|
virtual TimeMs framePresentationTime() const = 0;
|
|
|
|
// Render current frame to an image with specific size.
|
|
virtual bool renderFrame(QImage &to, bool &hasAlpha, const QSize &size) = 0;
|
|
|
|
virtual TimeMs durationMs() const = 0;
|
|
virtual bool hasAudio() const = 0;
|
|
|
|
virtual bool start(Mode mode, TimeMs &positionMs) = 0;
|
|
|
|
virtual ~ReaderImplementation() {
|
|
}
|
|
int64 dataSize() const {
|
|
return _dataSize;
|
|
}
|
|
|
|
protected:
|
|
FileLocation *_location;
|
|
QByteArray *_data;
|
|
QFile _file;
|
|
QBuffer _buffer;
|
|
QIODevice *_device = nullptr;
|
|
int64 _dataSize = 0;
|
|
|
|
void initDevice();
|
|
|
|
};
|
|
|
|
} // namespace internal
|
|
} // namespace Clip
|
|
} // namespace Media
|