initial commit for 0.4.18 version of Telegram Desktop

Telegram/SourceFiles/mtproto/mtpFileLoader.h

@@ -0,0 +1,88 @@
+/*
+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;
+
+};