tdesktop/Telegram/SourceFiles/mtproto/mtpFileLoader.h

89 lines
2.2 KiB
C++

/*
This file is part of Telegram Desktop,
an unofficial desktop 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.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014 John Preston, https://tdesktop.com
*/
#pragma once
namespace MTP {
void clearLoaderPriorities();
}
struct mtpFileLoaderQueue;
class mtpFileLoader : public QObject, public RPCSender {
Q_OBJECT
public:
mtpFileLoader(int32 dc, const int64 &volume, int32 local, const int64 &secret);
mtpFileLoader(int32 dc, const uint64 &id, const uint64 &access, mtpTypeId locType, const QString &to, int32 size);
bool done() const;
mtpTypeId fileType() const;
const QByteArray &bytes() const;
QString fileName() const;
float64 currentProgress() const;
int32 currentOffset() const;
int32 fullSize() const;
void pause();
void start(bool loadFirst = false, bool prior = true);
void cancel();
bool loading() const;
uint64 objId() const;
~mtpFileLoader();
mtpFileLoader *prev, *next;
int32 priority;
signals:
void progress(mtpFileLoader *loader);
void failed(mtpFileLoader *loader, bool started);
private:
mtpFileLoaderQueue *queue;
bool inQueue, complete;
int32 requestId;
void started(bool loadFirst, bool prior);
void removeFromQueue();
void loadNext();
void finishFail();
bool loadPart();
void partLoaded(int32 offset, const MTPupload_File &result);
bool partFailed(const RPCError &error);
int32 dc;
mtpTypeId locationType; // 0 or mtpc_inputVideoFileLocation / mtpc_inputAudioFileLocation / mtpc_inputDocumentFileLocation
int64 volume; // for photo locations
int32 local;
int64 secret;
uint64 id; // for other locations
uint64 access;
QFile file;
int32 initialSize;
QByteArray data;
int32 size;
MTPstorage_FileType type;
};