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Telegram/SourceFiles/media/streaming/media_streaming_loader_local.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 "media/streaming/media_streaming_loader.h"
+#include "mtproto/sender.h"
+#include "data/data_file_origin.h"
+
+class ApiWrap;
+
+namespace Media {
+namespace Streaming {
+
+class LoaderLocal : public Loader, public base::has_weak_ptr {
+public:
+	LoaderLocal(std::unique_ptr<QIODevice> device);
+
+	[[nodiscard]] Storage::Cache::Key baseCacheKey() const override;
+	[[nodiscard]] int64 size() const override;
+
+	void load(int64 offset) override;
+	void cancel(int64 offset) override;
+	void resetPriorities() override;
+	void setPriority(int priority) override;
+	void stop() override;
+
+	void tryRemoveFromQueue() override;
+
+	// Parts will be sent from the main thread.
+	[[nodiscard]] rpl::producer<LoadedPart> parts() const override;
+	[[nodiscard]] rpl::producer<SpeedEstimate> speedEstimate() const override;
+
+	void attachDownloader(
+		not_null<Storage::StreamedFileDownloader*> downloader) override;
+	void clearAttachedDownloader() override;
+
+private:
+	void fail();
+
+	const std::unique_ptr<QIODevice> _device;
+	const int64 _size = 0;
+	rpl::event_stream<LoadedPart> _parts;
+
+};
+
+std::unique_ptr<LoaderLocal> MakeFileLoader(const QString &path);
+std::unique_ptr<LoaderLocal> MakeBytesLoader(const QByteArray &bytes);
+
+} // namespace Streaming
+} // namespace Media