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Telegram/SourceFiles/media/streaming/media_streaming_document.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_player.h"
+#include "ui/effects/radial_animation.h"
+#include "ui/effects/animations.h"
+#include "base/timer.h"
+
+class DocumentData;
+
+namespace Media::Streaming {
+
+class Instance;
+class Loader;
+
+struct QualityDescriptor {
+	uint32 sizeInBytes = 0;
+	uint32 height = 0;
+};
+
+class Document {
+public:
+	Document(
+		not_null<DocumentData*> document,
+		std::shared_ptr<Reader> reader,
+		std::vector<QualityDescriptor> otherQualities = {});
+	Document(
+		not_null<PhotoData*> photo,
+		std::shared_ptr<Reader> reader,
+		std::vector<QualityDescriptor> otherQualities = {});
+	explicit Document(std::unique_ptr<Loader> loader);
+
+	void play(const PlaybackOptions &options);
+	void saveFrameToCover();
+
+	[[nodiscard]] Player &player();
+	[[nodiscard]] const Player &player() const;
+	[[nodiscard]] const Information &info() const;
+
+	[[nodiscard]] bool waitingShown() const;
+	[[nodiscard]] float64 waitingOpacity() const;
+	[[nodiscard]] Ui::RadialState waitingState() const;
+
+	void setOtherQualities(std::vector<QualityDescriptor> value);
+	[[nodiscard]] rpl::producer<int> switchQualityRequests() const;
+
+private:
+	Document(
+		std::shared_ptr<Reader> reader,
+		DocumentData *document,
+		PhotoData *photo,
+		std::vector<QualityDescriptor> otherQualities);
+
+	friend class Instance;
+
+	void registerInstance(not_null<Instance*> instance);
+	void unregisterInstance(not_null<Instance*> instance);
+	void refreshPlayerPriority();
+
+	void waitingCallback();
+	void checkForQualitySwitch(SpeedEstimate estimate);
+	bool checkSwitchToHigherQuality();
+	bool checkSwitchToLowerQuality();
+
+	void handleUpdate(Update &&update);
+	void handleError(Error &&error);
+
+	void ready(Information &&info);
+	void waitingChange(bool waiting);
+
+	void validateGoodThumbnail();
+	void resubscribe();
+
+	DocumentData *_document = nullptr;
+	PhotoData *_photo = nullptr;
+	Player _player;
+	Information _info;
+
+	rpl::lifetime _subscription;
+
+	mutable Ui::InfiniteRadialAnimation _radial;
+	Ui::Animations::Simple _fading;
+	base::Timer _timer;
+	base::flat_set<not_null<Instance*>> _instances;
+	std::vector<QualityDescriptor> _otherQualities;
+	rpl::event_stream<int> _switchQualityRequests;
+	SpeedEstimate _lastSpeedEstimate;
+	bool _waiting = false;
+
+};
+
+} // namespace Media::Streaming