Implement better image selection strategy

app/src/main/java/org/schabi/newpipe/App.java

@@ -20,6 +20,7 @@ import org.schabi.newpipe.extractor.downloader.Downloader;
 import org.schabi.newpipe.ktx.ExceptionUtils;
 import org.schabi.newpipe.settings.NewPipeSettings;
 import org.schabi.newpipe.util.Localization;
+import org.schabi.newpipe.util.image.ImageStrategy;
 import org.schabi.newpipe.util.image.PicassoHelper;
 import org.schabi.newpipe.util.ServiceHelper;
 import org.schabi.newpipe.util.StateSaver;
@@ -100,7 +101,7 @@ public class App extends Application {
         // Initialize image loader
         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
         PicassoHelper.init(this);
-        PicassoHelper.setPreferredImageQuality(PreferredImageQuality.fromPreferenceKey(this,
+        ImageStrategy.setPreferredImageQuality(PreferredImageQuality.fromPreferenceKey(this,
                 prefs.getString(getString(R.string.image_quality_key),
                         getString(R.string.image_quality_default))));
         PicassoHelper.setIndicatorsEnabled(MainActivity.DEBUG

app/src/main/java/org/schabi/newpipe/database/playlist/PlaylistStreamEntry.kt

@@ -7,7 +7,7 @@ import org.schabi.newpipe.database.playlist.model.PlaylistStreamEntity
 import org.schabi.newpipe.database.stream.model.StreamEntity
 import org.schabi.newpipe.database.stream.model.StreamStateEntity
 import org.schabi.newpipe.extractor.stream.StreamInfoItem
-import org.schabi.newpipe.util.image.PicassoHelper
+import org.schabi.newpipe.util.image.ImageStrategy
 
 data class PlaylistStreamEntry(
     @Embedded
@@ -29,7 +29,7 @@ data class PlaylistStreamEntry(
         item.duration = streamEntity.duration
         item.uploaderName = streamEntity.uploader
         item.uploaderUrl = streamEntity.uploaderUrl
-        item.thumbnails = PicassoHelper.urlToImageList(streamEntity.thumbnailUrl)
+        item.thumbnails = ImageStrategy.urlToImageList(streamEntity.thumbnailUrl)
 
         return item
     }

app/src/main/java/org/schabi/newpipe/database/playlist/model/PlaylistRemoteEntity.java

@@ -11,7 +11,7 @@ import androidx.room.PrimaryKey;
 import org.schabi.newpipe.database.playlist.PlaylistLocalItem;
 import org.schabi.newpipe.extractor.playlist.PlaylistInfo;
 import org.schabi.newpipe.util.Constants;
-import org.schabi.newpipe.util.image.PicassoHelper;
+import org.schabi.newpipe.util.image.ImageStrategy;
 
 import static org.schabi.newpipe.database.LocalItem.LocalItemType.PLAYLIST_REMOTE_ITEM;
 import static org.schabi.newpipe.database.playlist.model.PlaylistRemoteEntity.REMOTE_PLAYLIST_NAME;
@@ -70,7 +70,7 @@ public class PlaylistRemoteEntity implements PlaylistLocalItem {
     @Ignore
     public PlaylistRemoteEntity(final PlaylistInfo info) {
         this(info.getServiceId(), info.getName(), info.getUrl(),
-                PicassoHelper.choosePreferredImage(info.getThumbnails()),
+                ImageStrategy.choosePreferredImage(info.getThumbnails()),
                 info.getUploaderName(), info.getStreamCount());
     }
 
@@ -85,7 +85,7 @@ public class PlaylistRemoteEntity implements PlaylistLocalItem {
                 && TextUtils.equals(getName(), info.getName())
                 && TextUtils.equals(getUrl(), info.getUrl())
                 && TextUtils.equals(getThumbnailUrl(),
-                PicassoHelper.choosePreferredImage(info.getThumbnails()))
+                ImageStrategy.choosePreferredImage(info.getThumbnails()))
                 && TextUtils.equals(getUploader(), info.getUploaderName());
     }
 

app/src/main/java/org/schabi/newpipe/database/stream/StreamStatisticsEntry.kt

@@ -7,7 +7,7 @@ import org.schabi.newpipe.database.history.model.StreamHistoryEntity
 import org.schabi.newpipe.database.stream.model.StreamEntity
 import org.schabi.newpipe.database.stream.model.StreamStateEntity.STREAM_PROGRESS_MILLIS
 import org.schabi.newpipe.extractor.stream.StreamInfoItem
-import org.schabi.newpipe.util.image.PicassoHelper
+import org.schabi.newpipe.util.image.ImageStrategy
 import java.time.OffsetDateTime
 
 class StreamStatisticsEntry(
@@ -31,7 +31,7 @@ class StreamStatisticsEntry(
         item.duration = streamEntity.duration
         item.uploaderName = streamEntity.uploader
         item.uploaderUrl = streamEntity.uploaderUrl
-        item.thumbnails = PicassoHelper.urlToImageList(streamEntity.thumbnailUrl)
+        item.thumbnails = ImageStrategy.urlToImageList(streamEntity.thumbnailUrl)
 
         return item
     }

app/src/main/java/org/schabi/newpipe/database/stream/model/StreamEntity.kt

@@ -13,7 +13,7 @@ import org.schabi.newpipe.extractor.stream.StreamInfo
 import org.schabi.newpipe.extractor.stream.StreamInfoItem
 import org.schabi.newpipe.extractor.stream.StreamType
 import org.schabi.newpipe.player.playqueue.PlayQueueItem
-import org.schabi.newpipe.util.image.PicassoHelper
+import org.schabi.newpipe.util.image.ImageStrategy
 import java.io.Serializable
 import java.time.OffsetDateTime
 
@@ -68,7 +68,7 @@ data class StreamEntity(
     constructor(item: StreamInfoItem) : this(
         serviceId = item.serviceId, url = item.url, title = item.name,
         streamType = item.streamType, duration = item.duration, uploader = item.uploaderName,
-        uploaderUrl = item.uploaderUrl, thumbnailUrl = PicassoHelper.choosePreferredImage(item.thumbnails), viewCount = item.viewCount,
+        uploaderUrl = item.uploaderUrl, thumbnailUrl = ImageStrategy.choosePreferredImage(item.thumbnails), viewCount = item.viewCount,
         textualUploadDate = item.textualUploadDate, uploadDate = item.uploadDate?.offsetDateTime(),
         isUploadDateApproximation = item.uploadDate?.isApproximation
     )
@@ -77,7 +77,7 @@ data class StreamEntity(
     constructor(info: StreamInfo) : this(
         serviceId = info.serviceId, url = info.url, title = info.name,
         streamType = info.streamType, duration = info.duration, uploader = info.uploaderName,
-        uploaderUrl = info.uploaderUrl, thumbnailUrl = PicassoHelper.choosePreferredImage(info.thumbnails), viewCount = info.viewCount,
+        uploaderUrl = info.uploaderUrl, thumbnailUrl = ImageStrategy.choosePreferredImage(info.thumbnails), viewCount = info.viewCount,
         textualUploadDate = info.textualUploadDate, uploadDate = info.uploadDate?.offsetDateTime(),
         isUploadDateApproximation = info.uploadDate?.isApproximation
     )
@@ -87,7 +87,7 @@ data class StreamEntity(
         serviceId = item.serviceId, url = item.url, title = item.title,
         streamType = item.streamType, duration = item.duration, uploader = item.uploader,
         uploaderUrl = item.uploaderUrl,
-        thumbnailUrl = PicassoHelper.choosePreferredImage(item.thumbnails)
+        thumbnailUrl = ImageStrategy.choosePreferredImage(item.thumbnails)
     )
 
     fun toStreamInfoItem(): StreamInfoItem {
@@ -95,7 +95,7 @@ data class StreamEntity(
         item.duration = duration
         item.uploaderName = uploader
         item.uploaderUrl = uploaderUrl
-        item.thumbnails = PicassoHelper.urlToImageList(thumbnailUrl)
+        item.thumbnails = ImageStrategy.urlToImageList(thumbnailUrl)
 
         if (viewCount != null) item.viewCount = viewCount as Long
         item.textualUploadDate = textualUploadDate

app/src/main/java/org/schabi/newpipe/database/subscription/SubscriptionEntity.java

@@ -10,7 +10,7 @@ import androidx.room.PrimaryKey;
 import org.schabi.newpipe.extractor.channel.ChannelInfo;
 import org.schabi.newpipe.extractor.channel.ChannelInfoItem;
 import org.schabi.newpipe.util.Constants;
-import org.schabi.newpipe.util.image.PicassoHelper;
+import org.schabi.newpipe.util.image.ImageStrategy;
 
 import static org.schabi.newpipe.database.subscription.SubscriptionEntity.SUBSCRIPTION_SERVICE_ID;
 import static org.schabi.newpipe.database.subscription.SubscriptionEntity.SUBSCRIPTION_TABLE;
@@ -58,7 +58,7 @@ public class SubscriptionEntity {
         final SubscriptionEntity result = new SubscriptionEntity();
         result.setServiceId(info.getServiceId());
         result.setUrl(info.getUrl());
-        result.setData(info.getName(), PicassoHelper.choosePreferredImage(info.getAvatars()),
+        result.setData(info.getName(), ImageStrategy.choosePreferredImage(info.getAvatars()),
                 info.getDescription(), info.getSubscriberCount());
         return result;
     }
@@ -139,7 +139,7 @@ public class SubscriptionEntity {
     @Ignore
     public ChannelInfoItem toChannelInfoItem() {
         final ChannelInfoItem item = new ChannelInfoItem(getServiceId(), getUrl(), getName());
-        item.setThumbnails(PicassoHelper.urlToImageList(getAvatarUrl()));
+        item.setThumbnails(ImageStrategy.urlToImageList(getAvatarUrl()));
         item.setSubscriberCount(getSubscriberCount());
         item.setDescription(getDescription());
         return item;

app/src/main/java/org/schabi/newpipe/fragments/detail/DescriptionFragment.java

@@ -17,7 +17,7 @@ import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.util.Localization;
 
 import java.util.List;
-import org.schabi.newpipe.util.image.PicassoHelper;
+import org.schabi.newpipe.util.image.ImageStrategy;
 
 import icepick.State;
 
@@ -114,7 +114,7 @@ public class DescriptionFragment extends BaseDescriptionFragment {
         addMetadataItem(inflater, layout, true, R.string.metadata_host,
                 streamInfo.getHost());
         addMetadataItem(inflater, layout, true, R.string.metadata_thumbnail_url,
-                PicassoHelper.choosePreferredImage(streamInfo.getThumbnails()));
+                ImageStrategy.choosePreferredImage(streamInfo.getThumbnails()));
     }
 
     private void addPrivacyMetadataItem(final LayoutInflater inflater, final LinearLayout layout) {

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelAboutFragment.java

@@ -17,7 +17,7 @@ import org.schabi.newpipe.extractor.stream.Description;
 import org.schabi.newpipe.fragments.detail.BaseDescriptionFragment;
 import org.schabi.newpipe.util.DeviceUtils;
 import org.schabi.newpipe.util.Localization;
-import org.schabi.newpipe.util.image.PicassoHelper;
+import org.schabi.newpipe.util.image.ImageStrategy;
 
 import java.util.List;
 
@@ -101,8 +101,8 @@ public class ChannelAboutFragment extends BaseDescriptionFragment {
         }
 
         addMetadataItem(inflater, layout, true, R.string.metadata_avatar_url,
-                PicassoHelper.choosePreferredImage(channelInfo.getAvatars()));
+                ImageStrategy.choosePreferredImage(channelInfo.getAvatars()));
         addMetadataItem(inflater, layout, true, R.string.metadata_banner_url,
-                PicassoHelper.choosePreferredImage(channelInfo.getBanners()));
+                ImageStrategy.choosePreferredImage(channelInfo.getBanners()));
     }
 }

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelFragment.java

@@ -49,6 +49,7 @@ import org.schabi.newpipe.util.ExtractorHelper;
 import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.StateSaver;
+import org.schabi.newpipe.util.image.ImageStrategy;
 import org.schabi.newpipe.util.image.PicassoHelper;
 import org.schabi.newpipe.util.ThemeHelper;
 import org.schabi.newpipe.util.external_communication.ShareUtils;
@@ -147,7 +148,7 @@ public class ChannelFragment extends BaseStateFragment<ChannelInfo>
 
         setTitle(name);
         binding.channelTitleView.setText(name);
-        if (!PicassoHelper.shouldLoadImages()) {
+        if (!ImageStrategy.shouldLoadImages()) {
             // do not waste space for the banner if it is not going to be loaded
             binding.channelBannerImage.setImageDrawable(null);
         }
@@ -354,7 +355,7 @@ public class ChannelFragment extends BaseStateFragment<ChannelInfo>
                 channel.setServiceId(info.getServiceId());
                 channel.setUrl(info.getUrl());
                 channel.setData(info.getName(),
-                        PicassoHelper.choosePreferredImage(info.getAvatars()),
+                        ImageStrategy.choosePreferredImage(info.getAvatars()),
                         info.getDescription(),
                         info.getSubscriberCount());
                 channelSubscription = null;
@@ -578,7 +579,7 @@ public class ChannelFragment extends BaseStateFragment<ChannelInfo>
         currentInfo = result;
         setInitialData(result.getServiceId(), result.getOriginalUrl(), result.getName());
 
-        if (PicassoHelper.shouldLoadImages() && !result.getBanners().isEmpty()) {
+        if (ImageStrategy.shouldLoadImages() && !result.getBanners().isEmpty()) {
             PicassoHelper.loadBanner(result.getBanners()).tag(PICASSO_CHANNEL_TAG)
                     .into(binding.channelBannerImage);
         } else {

app/src/main/java/org/schabi/newpipe/info_list/holder/CommentsMiniInfoItemHolder.java

@@ -31,6 +31,7 @@ import org.schabi.newpipe.local.history.HistoryRecordManager;
 import org.schabi.newpipe.util.DeviceUtils;
 import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.NavigationHelper;
+import org.schabi.newpipe.util.image.ImageStrategy;
 import org.schabi.newpipe.util.image.PicassoHelper;
 import org.schabi.newpipe.util.external_communication.ShareUtils;
 import org.schabi.newpipe.util.text.CommentTextOnTouchListener;
@@ -98,7 +99,7 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
         final CommentsInfoItem item = (CommentsInfoItem) infoItem;
 
         PicassoHelper.loadAvatar(item.getUploaderAvatars()).into(itemThumbnailView);
-        if (PicassoHelper.shouldLoadImages()) {
+        if (ImageStrategy.shouldLoadImages()) {
             itemThumbnailView.setVisibility(View.VISIBLE);
             itemRoot.setPadding(commentVerticalPadding, commentVerticalPadding,
                     commentVerticalPadding, commentVerticalPadding);

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionFragment.kt

@@ -61,7 +61,7 @@ import org.schabi.newpipe.util.OnClickGesture
 import org.schabi.newpipe.util.ServiceHelper
 import org.schabi.newpipe.util.ThemeHelper.getGridSpanCountChannels
 import org.schabi.newpipe.util.external_communication.ShareUtils
-import org.schabi.newpipe.util.image.PicassoHelper
+import org.schabi.newpipe.util.image.ImageStrategy
 import java.text.SimpleDateFormat
 import java.util.Date
 import java.util.Locale
@@ -343,7 +343,7 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
             when (i) {
                 0 -> ShareUtils.shareText(
                     requireContext(), selectedItem.name, selectedItem.url,
-                    PicassoHelper.choosePreferredImage(selectedItem.thumbnails)
+                    ImageStrategy.choosePreferredImage(selectedItem.thumbnails)
                 )
                 1 -> ShareUtils.openUrlInBrowser(requireContext(), selectedItem.url)
                 2 -> deleteChannel(selectedItem)

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionManager.kt

@@ -19,7 +19,7 @@ import org.schabi.newpipe.extractor.feed.FeedInfo
 import org.schabi.newpipe.extractor.stream.StreamInfoItem
 import org.schabi.newpipe.local.feed.FeedDatabaseManager
 import org.schabi.newpipe.util.ExtractorHelper
-import org.schabi.newpipe.util.image.PicassoHelper
+import org.schabi.newpipe.util.image.ImageStrategy
 
 class SubscriptionManager(context: Context) {
     private val database = NewPipeDatabase.getInstance(context)
@@ -74,7 +74,7 @@ class SubscriptionManager(context: Context) {
                 Completable.fromRunnable {
                     it.setData(
                         info.name,
-                        PicassoHelper.choosePreferredImage(info.avatars),
+                        ImageStrategy.choosePreferredImage(info.avatars),
                         info.description,
                         info.subscriberCount
                     )
@@ -105,7 +105,7 @@ class SubscriptionManager(context: Context) {
         } else if (info is ChannelInfo) {
             subscriptionEntity.setData(
                 info.name,
-                PicassoHelper.choosePreferredImage(info.avatars),
+                ImageStrategy.choosePreferredImage(info.avatars),
                 info.description,
                 info.subscriberCount
             )

app/src/main/java/org/schabi/newpipe/player/mediaitem/ExceptionTag.java

@@ -3,7 +3,7 @@ package org.schabi.newpipe.player.mediaitem;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.extractor.stream.StreamType;
 import org.schabi.newpipe.player.playqueue.PlayQueueItem;
-import org.schabi.newpipe.util.image.PicassoHelper;
+import org.schabi.newpipe.util.image.ImageStrategy;
 
 import java.util.List;
 import java.util.Optional;
@@ -75,7 +75,7 @@ public final class ExceptionTag implements MediaItemTag {
 
     @Override
     public String getThumbnailUrl() {
-        return PicassoHelper.choosePreferredImage(item.getThumbnails());
+        return ImageStrategy.choosePreferredImage(item.getThumbnails());
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/player/mediaitem/StreamInfoTag.java

@@ -6,7 +6,7 @@ import org.schabi.newpipe.extractor.stream.AudioStream;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.extractor.stream.StreamType;
 import org.schabi.newpipe.extractor.stream.VideoStream;
-import org.schabi.newpipe.util.image.PicassoHelper;
+import org.schabi.newpipe.util.image.ImageStrategy;
 
 import java.util.Collections;
 import java.util.List;
@@ -96,7 +96,7 @@ public final class StreamInfoTag implements MediaItemTag {
 
     @Override
     public String getThumbnailUrl() {
-        return PicassoHelper.choosePreferredImage(streamInfo.getThumbnails());
+        return ImageStrategy.choosePreferredImage(streamInfo.getThumbnails());
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/player/mediasession/PlayQueueNavigator.java

@@ -20,7 +20,7 @@ import com.google.android.exoplayer2.util.Util;
 import org.schabi.newpipe.player.Player;
 import org.schabi.newpipe.player.playqueue.PlayQueue;
 import org.schabi.newpipe.player.playqueue.PlayQueueItem;
-import org.schabi.newpipe.util.image.PicassoHelper;
+import org.schabi.newpipe.util.image.ImageStrategy;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -139,7 +139,7 @@ public class PlayQueueNavigator implements MediaSessionConnector.QueueNavigator
         descBuilder.setExtras(additionalMetadata);
 
         final Uri thumbnailUri = Uri.parse(
-                PicassoHelper.choosePreferredImage(item.getThumbnails()));
+                ImageStrategy.choosePreferredImage(item.getThumbnails()));
         if (thumbnailUri != null) {
             descBuilder.setIconUri(thumbnailUri);
         }

app/src/main/java/org/schabi/newpipe/settings/ContentSettingsFragment.java

@@ -31,6 +31,7 @@ import org.schabi.newpipe.extractor.localization.Localization;
 import org.schabi.newpipe.streams.io.NoFileManagerSafeGuard;
 import org.schabi.newpipe.streams.io.StoredFileHelper;
 import org.schabi.newpipe.util.NavigationHelper;
+import org.schabi.newpipe.util.image.ImageStrategy;
 import org.schabi.newpipe.util.image.PicassoHelper;
 import org.schabi.newpipe.util.ZipHelper;
 import org.schabi.newpipe.util.image.PreferredImageQuality;
@@ -109,7 +110,7 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
         final Preference imageQualityPreference = requirePreference(R.string.image_quality_key);
         imageQualityPreference.setOnPreferenceChangeListener(
                 (preference, newValue) -> {
-                    PicassoHelper.setPreferredImageQuality(PreferredImageQuality
+                    ImageStrategy.setPreferredImageQuality(PreferredImageQuality
                             .fromPreferenceKey(requireContext(), (String) newValue));
                     try {
                         PicassoHelper.clearCache(preference.getContext());

app/src/main/java/org/schabi/newpipe/util/external_communication/ShareUtils.java

@@ -24,6 +24,7 @@ import androidx.core.content.FileProvider;
 import org.schabi.newpipe.BuildConfig;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.Image;
+import org.schabi.newpipe.util.image.ImageStrategy;
 import org.schabi.newpipe.util.image.PicassoHelper;
 
 import java.io.File;
@@ -251,7 +252,7 @@ public final class ShareUtils {
         // If loading of images has been disabled, don't try to generate a content preview
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q
                 && !TextUtils.isEmpty(imagePreviewUrl)
-                && PicassoHelper.shouldLoadImages()) {
+                && ImageStrategy.shouldLoadImages()) {
 
             final ClipData clipData = generateClipDataForImagePreview(context, imagePreviewUrl);
             if (clipData != null) {
@@ -276,14 +277,14 @@ public final class ShareUtils {
      * @param title   the title of the content
      * @param content the content to share
      * @param images  a set of possible {@link Image}s of the subject, among which to choose with
-     *                {@link PicassoHelper#choosePreferredImage(List)} since that's likely to
+     *                {@link ImageStrategy#choosePreferredImage(List)} since that's likely to
      *                provide an image that is in Picasso's cache
      */
     public static void shareText(@NonNull final Context context,
                                  @NonNull final String title,
                                  final String content,
                                  final List<Image> images) {
-        shareText(context, title, content, PicassoHelper.choosePreferredImage(images));
+        shareText(context, title, content, ImageStrategy.choosePreferredImage(images));
     }
 
     /**

app/src/main/java/org/schabi/newpipe/util/image/ImageStrategy.java

@@ -0,0 +1,115 @@
+package org.schabi.newpipe.util.image;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import org.schabi.newpipe.extractor.Image;
+
+import java.util.Comparator;
+import java.util.List;
+
+public final class ImageStrategy {
+
+    // the height thresholds also used by the extractor (TODO move them to the extractor)
+    private static final int LOW_MEDIUM = 175;
+    private static final int MEDIUM_HIGH = 720;
+
+    private static PreferredImageQuality preferredImageQuality = PreferredImageQuality.MEDIUM;
+
+    private ImageStrategy() {
+    }
+
+    public static void setPreferredImageQuality(final PreferredImageQuality preferredImageQuality) {
+        ImageStrategy.preferredImageQuality = preferredImageQuality;
+    }
+
+    public static boolean shouldLoadImages() {
+        return preferredImageQuality != PreferredImageQuality.NONE;
+    }
+
+
+    private static double estimatePixelCount(final Image image,
+                                             final double widthOverHeight,
+                                             final boolean unknownsLast) {
+        if (image.getHeight() == Image.HEIGHT_UNKNOWN) {
+            if (image.getWidth() == Image.WIDTH_UNKNOWN) {
+                switch (image.getEstimatedResolutionLevel()) {
+                    case LOW:
+                        return unknownsLast
+                                ? (LOW_MEDIUM - 1) * (LOW_MEDIUM - 1) * widthOverHeight
+                                : 0;
+                    case MEDIUM:
+                        return unknownsLast
+                                ? (MEDIUM_HIGH - 1) * (MEDIUM_HIGH - 1) * widthOverHeight
+                                : LOW_MEDIUM * LOW_MEDIUM * widthOverHeight;
+                    case HIGH:
+                        return unknownsLast
+                                ? 1e20 // less than 1e21 to prefer over fully unknown image sizes
+                                : MEDIUM_HIGH * MEDIUM_HIGH * widthOverHeight;
+                    default:
+                    case UNKNOWN:
+                        // images whose size is completely unknown will be avoided when possible
+                        return unknownsLast ? 1e21 : -1;
+                }
+
+            } else {
+                return image.getWidth() * image.getWidth() / widthOverHeight;
+            }
+
+        } else if (image.getWidth() == Image.WIDTH_UNKNOWN) {
+            return image.getHeight() * image.getHeight() * widthOverHeight;
+
+        } else {
+            return image.getHeight() * image.getWidth();
+        }
+    }
+
+    @Nullable
+    public static String choosePreferredImage(@NonNull final List<Image> images) {
+        if (preferredImageQuality == PreferredImageQuality.NONE) {
+            return null; // do not load images
+        }
+
+        final double widthOverHeight = images.stream()
+                .filter(image -> image.getHeight() != Image.HEIGHT_UNKNOWN
+                        && image.getWidth() != Image.WIDTH_UNKNOWN)
+                .mapToDouble(image -> ((double) image.getWidth()) / image.getHeight())
+                .findFirst()
+                .orElse(1.0);
+
+        final Comparator<Image> comparator;
+        switch (preferredImageQuality) {
+            case LOW:
+                comparator = Comparator.comparingDouble(
+                        image -> estimatePixelCount(image, widthOverHeight, true));
+                break;
+            default:
+            case MEDIUM:
+                comparator = Comparator.comparingDouble(image -> {
+                    final double pixelCount = estimatePixelCount(image, widthOverHeight, true);
+                    final double mediumHeight = (LOW_MEDIUM + MEDIUM_HIGH) / 2.0;
+                    return Math.abs(pixelCount - mediumHeight * mediumHeight * widthOverHeight);
+                });
+                break;
+            case HIGH:
+                comparator = Comparator.<Image>comparingDouble(
+                        image -> estimatePixelCount(image, widthOverHeight, false))
+                        .reversed();
+                break;
+        }
+
+        return images.stream()
+                .min(comparator)
+                .map(Image::getUrl)
+                .orElse(null);
+    }
+
+    @NonNull
+    public static List<Image> urlToImageList(@Nullable final String url) {
+        if (url == null) {
+            return List.of();
+        } else {
+            return List.of(new Image(url, -1, -1, Image.ResolutionLevel.UNKNOWN));
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/util/image/PicassoHelper.java

@@ -2,13 +2,13 @@ package org.schabi.newpipe.util.image;
 
 import static org.schabi.newpipe.MainActivity.DEBUG;
 import static org.schabi.newpipe.extractor.utils.Utils.isNullOrEmpty;
+import static org.schabi.newpipe.util.image.ImageStrategy.choosePreferredImage;
 
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.util.Log;
 
-import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.core.graphics.BitmapCompat;
 
@@ -21,11 +21,9 @@ import com.squareup.picasso.Transformation;
 
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.Image;
-import org.schabi.newpipe.extractor.Image.ResolutionLevel;
 
 import java.io.File;
 import java.io.IOException;
-import java.util.Comparator;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 
@@ -46,7 +44,6 @@ public final class PicassoHelper {
     @SuppressLint("StaticFieldLeak")
     private static Picasso picassoInstance;
 
-    private static PreferredImageQuality preferredImageQuality = PreferredImageQuality.MEDIUM;
 
     public static void init(final Context context) {
         picassoCache = new LruCache(10 * 1024 * 1024);
@@ -92,14 +89,6 @@ public final class PicassoHelper {
         picassoInstance.setIndicatorsEnabled(enabled); // useful for debugging
     }
 
-    public static void setPreferredImageQuality(final PreferredImageQuality preferredImageQuality) {
-        PicassoHelper.preferredImageQuality = preferredImageQuality;
-    }
-
-    public static boolean shouldLoadImages() {
-        return preferredImageQuality != PreferredImageQuality.NONE;
-    }
-
 
     public static RequestCreator loadAvatar(final List<Image> images) {
         return loadImageDefault(images, R.drawable.placeholder_person);
@@ -227,41 +216,4 @@ public final class PicassoHelper {
             return requestCreator;
         }
     }
-
-    @Nullable
-    public static String choosePreferredImage(final List<Image> images) {
-        final Comparator<Image> comparator;
-        switch (preferredImageQuality) {
-            case NONE:
-                return null;
-            case HIGH:
-                comparator = Comparator.comparingInt(Image::getHeight).reversed();
-                break;
-            default:
-            case MEDIUM:
-                comparator = Comparator.comparingInt(image -> Math.abs(image.getHeight() - 450));
-                break;
-            case LOW:
-                comparator = Comparator.comparingInt(Image::getHeight);
-                break;
-        }
-
-        return images.stream()
-                .filter(image -> image.getEstimatedResolutionLevel() != ResolutionLevel.UNKNOWN)
-                .min(comparator)
-                .map(Image::getUrl)
-                .orElseGet(() -> images.stream()
-                        .findAny()
-                        .map(Image::getUrl)
-                        .orElse(null));
-    }
-
-    @NonNull
-    public static List<Image> urlToImageList(@Nullable final String url) {
-        if (url == null) {
-            return List.of();
-        } else {
-            return List.of(new Image(url, -1, -1, ResolutionLevel.UNKNOWN));
-        }
-    }
 }