Allow to pick up a 'Other' image if no 'Front' or 'Media' image is found, fixes #718

src/libs/services/scanner/impl/ScannerService.cpp

@@ -508,9 +508,9 @@ namespace lms::scanner
         _scanSteps.emplace_back(std::make_unique<ScanStepAssociatePlayListTracks>(params));
         _scanSteps.emplace_back(std::make_unique<ScanStepUpdateLibraryFields>(params));
         _scanSteps.emplace_back(std::make_unique<ScanStepAssociateReleaseImages>(params));
-        _scanSteps.emplace_back(std::make_unique<ScanStepAssociateArtistImages>(params)); // must come after ScanStepAssociateReleaseImages
+        _scanSteps.emplace_back(std::make_unique<ScanStepAssociateArtistImages>(params)); // must come after ScanStepAssociateReleaseImages (because and artist image can fallback on a release image)
-        _scanSteps.emplace_back(std::make_unique<ScanStepAssociateMediumImages>(params)); // must come after ScanStepAssociateReleaseImages
+        _scanSteps.emplace_back(std::make_unique<ScanStepAssociateMediumImages>(params)); // must come after ScanStepAssociateReleaseImages (because and medium image can fallback on a release image)
-        _scanSteps.emplace_back(std::make_unique<ScanStepAssociateTrackImages>(params));  // must come after ScanStepAssociateMediumImages and ScanStepAssociateReleaseImages
+        _scanSteps.emplace_back(std::make_unique<ScanStepAssociateTrackImages>(params));  // must come after ScanStepAssociateMediumImages and ScanStepAssociateReleaseImages (because and track image can fallback on a medium or release image)
         _scanSteps.emplace_back(std::make_unique<ScanStepAssociateExternalLyrics>(params));
         _scanSteps.emplace_back(std::make_unique<ScanStepRemoveOrphanedDbEntries>(params));
         _scanSteps.emplace_back(std::make_unique<ScanStepCompact>(params));

src/libs/services/scanner/impl/steps/ScanStepAssociateReleaseImages.cpp

@@ -151,7 +151,7 @@ namespace lms::scanner
             if (artwork)
                 return artwork;
 
-            // Fallback on embedded media image
+            // Fallback on embedded Media image
             {
                 db::TrackEmbeddedImage::FindParameters params;
                 params.setRelease(release->getId());
@@ -163,6 +163,18 @@ namespace lms::scanner
                 });
             }
 
+            // Fallback on embedded Other image, as some tracks may be badly tagged
+            {
+                db::TrackEmbeddedImage::FindParameters params;
+                params.setRelease(release->getId());
+                params.setImageType(db::ImageType::Other);
+                params.setSortMethod(db::TrackEmbeddedImageSortMethod::DiscNumberThenTrackNumberThenSizeDesc);
+                db::TrackEmbeddedImage::find(session, params, [&](const db::TrackEmbeddedImage::pointer& image) {
+                    if (!artwork)
+                        artwork = db::Artwork::find(session, image->getId());
+                });
+            }
+
             return artwork;
         }
 
@@ -282,7 +294,7 @@ namespace lms::scanner
             .releaseImageFileNames = _releaseImageFileNames,
         };
 
-        ReleaseArtworkAssociationContainer artistArtworkAssociations;
+        ReleaseArtworkAssociationContainer releaseArtworkAssociations;
         auto processJobsDone = [&](std::span<std::unique_ptr<core::IJob>> jobs) {
             if (_abortScan)
                 return;
@@ -292,12 +304,12 @@ namespace lms::scanner
                 const auto& associationJob{ static_cast<const ComputeReleaseArtworkAssociationsJob&>(*job) };
                 const auto& artistAssociations{ associationJob.getAssociations() };
 
-                artistArtworkAssociations.insert(std::end(artistArtworkAssociations), std::cbegin(artistAssociations), std::cend(artistAssociations));
+                releaseArtworkAssociations.insert(std::end(releaseArtworkAssociations), std::cbegin(artistAssociations), std::cend(artistAssociations));
 
                 context.currentStepStats.processedElems += associationJob.getProcessedReleaseCount();
             }
 
-            updateReleasePreferredArtworks(session, artistArtworkAssociations, true);
+            updateReleasePreferredArtworks(session, releaseArtworkAssociations, true);
             _progressCallback(context.currentStepStats);
         };
 
@@ -311,6 +323,6 @@ namespace lms::scanner
         queue.finish();
 
         // process all remaining associations
-        updateReleasePreferredArtworks(session, artistArtworkAssociations, false);
+        updateReleasePreferredArtworks(session, releaseArtworkAssociations, false);
     }
 } // namespace lms::scanner