Use Media::Streaming in EditCaptionBox.

Telegram/SourceFiles/boxes/edit_caption_box.h

@@ -10,7 +10,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/abstract_box.h"
 #include "storage/storage_media_prepare.h"
 #include "ui/wrap/slide_wrap.h"
-#include "media/clip/media_clip_reader.h"
 #include "mtproto/mtproto_rpc_sender.h"
 
 namespace ChatHelpers {
@@ -37,6 +36,16 @@ namespace Window {
 class SessionController;
 } // namespace Window
 
+namespace Media {
+namespace Streaming {
+class Instance;
+class Document;
+struct Update;
+enum class Error;
+struct Information;
+} // namespace Streaming
+} // namespace Media
+
 class EditCaptionBox
 	: public Ui::BoxContent
 	, public RPCSender
@@ -46,6 +55,7 @@ public:
 		QWidget*,
 		not_null<Window::SessionController*> controller,
 		not_null<HistoryItem*> item);
+	~EditCaptionBox();
 
 protected:
 	void prepare() override;
@@ -57,8 +67,14 @@ protected:
 
 private:
 	void updateBoxSize();
-	void prepareGifPreview();
-	void clipCallback(Media::Clip::Notification notification);
+	void prepareStreamedPreview();
+	void checkStreamedIsStarted();
+	void setupStreamedPreview(
+		std::shared_ptr<::Media::Streaming::Document> shared);
+	void handleStreamingUpdate(::Media::Streaming::Update &&update);
+	void handleStreamingError(::Media::Streaming::Error &&error);
+	void streamingReady(::Media::Streaming::Information &&info);
+	void startStreamedPlayer();
 
 	void setupEmojiPanel();
 	void updateEmojiPanelGeometry();
@@ -96,7 +112,7 @@ private:
 	bool _doc = false;
 
 	QPixmap _thumb;
-	Media::Clip::ReaderPointer _gifPreview;
+	std::unique_ptr<::Media::Streaming::Instance> _streamed;
 
 	object_ptr<Ui::InputField> _field = { nullptr };
 	object_ptr<Ui::EmojiButton> _emojiToggle = { nullptr };