From 890a126423344e779362fc557198d8624f6f2346 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Sat, 18 Sep 2021 20:29:52 +0300
Subject: [PATCH] Use shared provider for interaction animations.

---
 .../view/history_view_emoji_interactions.cpp  | 25 +++++++++++++------
 .../view/history_view_emoji_interactions.h    |  4 +++
 Telegram/lib_lottie                           |  2 +-
 3 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/Telegram/SourceFiles/history/view/history_view_emoji_interactions.cpp b/Telegram/SourceFiles/history/view/history_view_emoji_interactions.cpp
index 449f36578..55ad1657f 100644
--- a/Telegram/SourceFiles/history/view/history_view_emoji_interactions.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_emoji_interactions.cpp
@@ -145,14 +145,25 @@ std::unique_ptr<Lottie::SinglePlayer> EmojiInteractions::preparePlayer(
 	};
 	const auto data = media->bytes();
 	const auto filepath = document->filepath();
-	return std::make_unique<Lottie::SinglePlayer>(
-		kCachesCount,
-		get,
-		put,
-		Lottie::ReadContent(data, filepath),
-		Lottie::FrameRequest{
-			_emojiSize * kSizeMultiplier * style::DevicePixelRatio() },
+	const auto request = Lottie::FrameRequest{
+		_emojiSize * kSizeMultiplier * style::DevicePixelRatio(),
+	};
+	auto &weakProvider = _sharedProviders[document];
+	auto shared = [&] {
+		if (const auto result = weakProvider.lock()) {
+			return result;
+		}
+		const auto result = Lottie::SinglePlayer::SharedProvider(
+			kCachesCount,
+			get,
+			put,
+			Lottie::ReadContent(data, filepath),
+			request,
 			Lottie::Quality::High);
+		weakProvider = result;
+		return result;
+	}();
+	return std::make_unique<Lottie::SinglePlayer>(std::move(shared), request);
 }
 
 void EmojiInteractions::visibleAreaUpdated(
diff --git a/Telegram/SourceFiles/history/view/history_view_emoji_interactions.h b/Telegram/SourceFiles/history/view/history_view_emoji_interactions.h
index 8184091df..aceca3432 100644
--- a/Telegram/SourceFiles/history/view/history_view_emoji_interactions.h
+++ b/Telegram/SourceFiles/history/view/history_view_emoji_interactions.h
@@ -17,6 +17,7 @@ struct EmojiInteractionPlayRequest;
 
 namespace Lottie {
 class SinglePlayer;
+class FrameProvider;
 } // namespace Lottie
 
 namespace Main {
@@ -81,6 +82,9 @@ private:
 	std::vector<Delayed> _delayed;
 	rpl::event_stream<QRect> _updateRequests;
 	rpl::event_stream<QString> _playStarted;
+	base::flat_map<
+		not_null<DocumentData*>,
+		std::weak_ptr<Lottie::FrameProvider>> _sharedProviders;
 
 	rpl::lifetime _lifetime;
 
diff --git a/Telegram/lib_lottie b/Telegram/lib_lottie
index 11003d490..6e3c468a9 160000
--- a/Telegram/lib_lottie
+++ b/Telegram/lib_lottie
@@ -1 +1 @@
-Subproject commit 11003d490b8a89b5b62e4185ea34b79565b5da16
+Subproject commit 6e3c468a9c58ecaf576c9b44599b816e5b03e98a