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Telegram/SourceFiles/storage/file_download_mtproto.h

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+/*
+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 "storage/file_download.h"
+#include "storage/download_manager_mtproto.h"
+
+class mtpFileLoader final
+	: public FileLoader
+	, private Storage::DownloadMtprotoTask {
+public:
+	mtpFileLoader(
+		not_null<Main::Session*> session,
+		const StorageFileLocation &location,
+		Data::FileOrigin origin,
+		LocationType type,
+		const QString &toFile,
+		int64 loadSize,
+		int64 fullSize,
+		LoadToCacheSetting toCache,
+		LoadFromCloudSetting fromCloud,
+		bool autoLoading,
+		uint8 cacheTag);
+	mtpFileLoader(
+		not_null<Main::Session*> session,
+		const WebFileLocation &location,
+		int64 loadSize,
+		int64 fullSize,
+		LoadFromCloudSetting fromCloud,
+		bool autoLoading,
+		uint8 cacheTag);
+	mtpFileLoader(
+		not_null<Main::Session*> session,
+		const GeoPointLocation &location,
+		int64 loadSize,
+		int64 fullSize,
+		LoadFromCloudSetting fromCloud,
+		bool autoLoading,
+		uint8 cacheTag);
+	mtpFileLoader(
+		not_null<Main::Session*> session,
+		const AudioAlbumThumbLocation &location,
+		int64 loadSize,
+		int64 fullSize,
+		LoadFromCloudSetting fromCloud,
+		bool autoLoading,
+		uint8 cacheTag);
+	~mtpFileLoader();
+
+	Data::FileOrigin fileOrigin() const override;
+	uint64 objId() const override;
+
+private:
+	Storage::Cache::Key cacheKey() const override;
+	std::optional<MediaKey> fileLocationKey() const override;
+	void startLoading() override;
+	void startLoadingWithPartial(const QByteArray &data) override;
+	void cancelHook() override;
+
+	bool readyToRequest() const override;
+	int64 takeNextRequestOffset() override;
+	bool feedPart(int64 offset, const QByteArray &bytes) override;
+	void cancelOnFail() override;
+	bool setWebFileSizeHook(int64 size) override;
+
+	bool _lastComplete = false;
+	int64 _nextRequestOffset = 0;
+
+};