From 392c07adbe42f4b424495034942e3c48b6b69856 Mon Sep 17 00:00:00 2001
From: Nicolas Werner <nicolas.werner@hotmail.de>
Date: Sun, 7 Jan 2024 21:52:20 +0100
Subject: [PATCH] Faster blurhash decode

---
 src/BlurhashProvider.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/BlurhashProvider.cpp b/src/BlurhashProvider.cpp
index d4482419..1fdc9319 100644
--- a/src/BlurhashProvider.cpp
+++ b/src/BlurhashProvider.cpp
@@ -22,9 +22,14 @@ BlurhashRunnable::run()
         return;
     }
 
+    auto blurhashDecodeSize = m_requestedSize;
+    if (blurhashDecodeSize.height() > 100 && blurhashDecodeSize.width() > 100) {
+        blurhashDecodeSize.scale(100, 100, Qt::AspectRatioMode::KeepAspectRatio);
+    }
+
     auto decoded = blurhash::decode(QUrl::fromPercentEncoding(m_id.toUtf8()).toStdString(),
-                                    m_requestedSize.width(),
-                                    m_requestedSize.height());
+                                    blurhashDecodeSize.width(),
+                                    blurhashDecodeSize.height());
     if (decoded.image.empty()) {
         emit error(QStringLiteral("Failed decode!"));
         return;
@@ -36,5 +41,7 @@ BlurhashRunnable::run()
                  (int)decoded.width * 3,
                  QImage::Format_RGB888);
 
+    image = image.scaled(m_requestedSize);
+
     emit done(image.convertToFormat(QImage::Format_RGB32));
 }