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Telegram/SourceFiles/media/streaming/media_streaming_file_delegate.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
+
+namespace FFmpeg {
+class Packet;
+} // namespace FFmpeg
+
+namespace Media {
+namespace Streaming {
+
+struct Stream;
+enum class Error;
+
+class FileDelegate {
+public:
+	[[nodiscard]] virtual Mode fileOpenMode() = 0;
+	[[nodiscard]] virtual bool fileReady(
+		int headerSize,
+		Stream &&video,
+		Stream &&audio) = 0;
+	virtual void fileError(Error error) = 0;
+	virtual void fileWaitingForData() = 0;
+	virtual void fileFullInCache(bool fullInCache) = 0;
+
+	virtual void fileProcessEndOfFile() = 0;
+	// Return true if reading and processing more packets is desired.
+	// Return false if sleeping until 'wake()' is called is desired.
+	[[nodiscard]] virtual bool fileProcessPackets(
+		base::flat_map<int, std::vector<FFmpeg::Packet>> &packets) = 0;
+	// Also returns true after fileProcessEndOfFile() if looping is desired.
+	[[nodiscard]] virtual bool fileReadMore() = 0;
+};
+
+} // namespace Streaming
+} // namespace Media