From 9b94940251ac7cdb5c833c44fa069f978ac706ff Mon Sep 17 00:00:00 2001
From: Nicolas Werner <nicolas.werner@hotmail.de>
Date: Thu, 3 Sep 2020 21:16:29 +0200
Subject: [PATCH] Reduce allocations

---
 blurhash.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/blurhash.cpp b/blurhash.cpp
index 03ec39c3..a4adf89f 100644
--- a/blurhash.cpp
+++ b/blurhash.cpp
@@ -260,6 +260,7 @@ decode(std::string_view blurhash, size_t width, size_t height, size_t bytesPerPi
 
         Components components{};
         std::vector<Color> values;
+        values.reserve(blurhash.size() / 2);
         try {
                 components = unpackComponents(decode83(blurhash.substr(0, 1)));
 
@@ -277,7 +278,7 @@ decode(std::string_view blurhash, size_t width, size_t height, size_t bytesPerPi
                 return {};
         }
 
-        i.image.reserve(height * width * 3);
+        i.image.reserve(height * width * bytesPerPixel);
 
         for (size_t y = 0; y < height; y++) {
                 for (size_t x = 0; x < width; x++) {