From ce37c6ef08b139d038fda41955802ae49d09887e Mon Sep 17 00:00:00 2001
From: Ilya Fedin <fedin-ilja2010@ya.ru>
Date: Mon, 9 Jan 2023 04:19:59 +0400
Subject: [PATCH] Implement lossless jpeg progression

---
 Telegram/SourceFiles/storage/localimageloader.cpp | 12 +++++++++---
 Telegram/lib_ui                                   |  2 +-
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/Telegram/SourceFiles/storage/localimageloader.cpp b/Telegram/SourceFiles/storage/localimageloader.cpp
index 9ef459abc8..c6c27c1b19 100644
--- a/Telegram/SourceFiles/storage/localimageloader.cpp
+++ b/Telegram/SourceFiles/storage/localimageloader.cpp
@@ -183,9 +183,15 @@ struct PreparedFileThumbnail {
 	if (!bytes.isEmpty()
 		&& (bytes.size()
 			<= full.width() * full.height() * kRecompressAfterBpp / 8)
-		&& (format == u"jpeg"_q)
-		&& Images::IsProgressiveJpeg(bytes)) {
-		return bytes;
+		&& (format == u"jpeg"_q)) {
+		if (!Images::IsProgressiveJpeg(bytes)) {
+			if (const auto result = Images::MakeProgressiveJpeg(bytes)
+				; !result.isEmpty()) {
+				return result;
+			}
+		} else {
+			return bytes;
+		}
 	}
 
 	auto result = QByteArray();
diff --git a/Telegram/lib_ui b/Telegram/lib_ui
index 3cb645f507..6cd13e1057 160000
--- a/Telegram/lib_ui
+++ b/Telegram/lib_ui
@@ -1 +1 @@
-Subproject commit 3cb645f50704b67537167e14623840a25fbdda7a
+Subproject commit 6cd13e1057ee18f3c0e5168232e007dcaeee34b2