From 3af36447bc990423bf1366799b944baff17b4918 Mon Sep 17 00:00:00 2001
From: Uwe Klotz <uklotz@mixxx.org>
Date: Fri, 28 Feb 2020 14:10:42 +0100
Subject: Prepare CoverArtCache for migration to new hash function

---
 src/library/coverart.cpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'src/library/coverart.cpp')

diff --git a/src/library/coverart.cpp b/src/library/coverart.cpp
index 27f317d6ba..3b43890ceb 100644
--- a/src/library/coverart.cpp
+++ b/src/library/coverart.cpp
@@ -137,6 +137,32 @@ QImage CoverInfo::loadImage(
     }
 }
 
+bool CoverInfo::refreshImageHash(
+        const QImage& loadedImage,
+        const SecurityTokenPointer& pTrackLocationToken) {
+    if (CoverImageUtils::isValidHash(hash)) {
+        // Trust that a valid hash has been calculated from the
+        // corresponding image. Otherwise we would refresh all
+        // hashes over and over again.
+        return false;
+    }
+    QImage image = loadedImage;
+    if (loadedImage.isNull()) {
+        image = loadImage(pTrackLocationToken);
+    }
+    if (image.isNull() && type != CoverInfo::NONE) {
+        kLogger.warning()
+                << "Resetting cover info"
+                << *this;
+        reset();
+        return true;
+    }
+    hash = CoverImageUtils::calculateHash(image);
+    DEBUG_ASSERT(image.isNull() || CoverImageUtils::isValidHash(hash));
+    DEBUG_ASSERT(!image.isNull() || hash == CoverImageUtils::defaultHash());
+    return true;
+}
+
 bool operator==(const CoverInfo& a, const CoverInfo& b) {
     return static_cast<const CoverInfoRelative&>(a) ==
                     static_cast<const CoverInfoRelative&>(b) &&
-- 
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