Add blurhashes to ImageBlurHashes for all images

2 files changed, 80 insertions, 21 deletions

diff --git a/Emby.Server.Implementations/Dto/DtoService.cs b/Emby.Server.Implementations/Dto/DtoService.cs
index 77a734ebf..38c4f940d 100644
--- a/Emby.Server.Implementations/Dto/DtoService.cs
+++ b/Emby.Server.Implementations/Dto/DtoService.cs
@@ -605,7 +605,7 @@ namespace Emby.Server.Implementations.Dto
 
                 if (dictionary.TryGetValue(person.Name, out Person entity))
                 {
-                    baseItemPerson.PrimaryImageTag = GetImageCacheTag(entity, ImageType.Primary);
+                    baseItemPerson.PrimaryImageTag = GetTagAndFillBlurhash(dto, entity, ImageType.Primary);
                     baseItemPerson.Id = entity.Id.ToString("N", CultureInfo.InvariantCulture);
                     list.Add(baseItemPerson);
                 }
@@ -654,6 +654,70 @@ namespace Emby.Server.Implementations.Dto
             return _libraryManager.GetGenreId(name);
         }
 
+        private string GetTagAndFillBlurhash(BaseItemDto dto, BaseItem item, ImageType imageType, int imageIndex = 0)
+        {
+            var image = item.GetImageInfo(imageType, imageIndex);
+            if (image != null)
+            {
+                return GetTagAndFillBlurhash(dto, item, image);
+            }
+
+            return null;
+        }
+
+        private string GetTagAndFillBlurhash(BaseItemDto dto, BaseItem item, ItemImageInfo image)
+        {
+            var tag = GetImageCacheTag(item, image);
+            if (!string.IsNullOrEmpty(image.BlurHash))
+            {
+                if (dto.ImageBlurHashes == null)
+                {
+                    dto.ImageBlurHashes = new Dictionary<ImageType, Dictionary<string, string>>();
+                }
+
+                if (!dto.ImageBlurHashes.ContainsKey(image.Type))
+                {
+                    dto.ImageBlurHashes[image.Type] = new Dictionary<string, string>();
+                }
+
+                dto.ImageBlurHashes[image.Type][tag] = image.BlurHash;
+            }
+
+            return tag;
+        }
+
+        private string[] GetTagsAndFillBlurhashes(BaseItemDto dto, BaseItem item, ImageType imageType, int limit)
+        {
+            return GetTagsAndFillBlurhashes(dto, item, imageType, item.GetImages(imageType).Take(limit).ToList());
+        }
+
+        private string[] GetTagsAndFillBlurhashes(BaseItemDto dto, BaseItem item, ImageType imageType, List<ItemImageInfo> images)
+        {
+            var tags = GetImageTags(item, images);
+            var hashes = new Dictionary<string, string>();
+            for (int i = 0; i < images.Count; i++)
+            {
+                var img = images[i];
+                if (!string.IsNullOrEmpty(img.BlurHash))
+                {
+                    var tag = tags[i];
+                    hashes[tag] = img.BlurHash;
+                }
+            }
+
+            if (hashes.Count > 0)
+            {
+                if (dto.ImageBlurHashes == null)
+                {
+                    dto.ImageBlurHashes = new Dictionary<ImageType, Dictionary<string, string>>();
+                }
+
+                dto.ImageBlurHashes[imageType] = hashes;
+            }
+
+            return tags;
+        }
+
         /// <summary>
         /// Sets simple property values on a DTOBaseItem
         /// </summary>
@@ -674,8 +738,8 @@ namespace Emby.Server.Implementations.Dto
                 dto.LockData = item.IsLocked;
                 dto.ForcedSortName = item.ForcedSortName;
             }
-            dto.Container = item.Container;
 
+            dto.Container = item.Container;
             dto.EndDate = item.EndDate;
 
             if (options.ContainsField(ItemFields.ExternalUrls))
@@ -694,10 +758,12 @@ namespace Emby.Server.Implementations.Dto
                 dto.AspectRatio = hasAspectRatio.AspectRatio;
             }
 
+            dto.ImageBlurHashes = new Dictionary<ImageType, Dictionary<string, string>>();
+
             var backdropLimit = options.GetImageLimit(ImageType.Backdrop);
             if (backdropLimit > 0)
             {
-                dto.BackdropImageTags = GetImageTags(item, item.GetImages(ImageType.Backdrop).Take(backdropLimit).ToList());
+                dto.BackdropImageTags = GetTagsAndFillBlurhashes(dto, item, ImageType.Backdrop, backdropLimit);
             }
 
             if (options.ContainsField(ItemFields.ScreenshotImageTags))
@@ -705,7 +771,7 @@ namespace Emby.Server.Implementations.Dto
                 var screenshotLimit = options.GetImageLimit(ImageType.Screenshot);
                 if (screenshotLimit > 0)
                 {
-                    dto.ScreenshotImageTags = GetImageTags(item, item.GetImages(ImageType.Screenshot).Take(screenshotLimit).ToList());
+                    dto.ScreenshotImageTags = GetTagsAndFillBlurhashes(dto, item, ImageType.Screenshot, screenshotLimit);
                 }
             }
 
@@ -718,7 +784,6 @@ namespace Emby.Server.Implementations.Dto
             if (options.EnableImages)
             {
                 dto.ImageTags = new Dictionary<ImageType, string>();
-                dto.ImageBlurHashes = new Dictionary<ImageType, string>();
 
                 // Prevent implicitly captured closure
                 var currentItem = item;
@@ -726,18 +791,12 @@ namespace Emby.Server.Implementations.Dto
                 {
                     if (options.GetImageLimit(image.Type) > 0)
                     {
-                        var tag = GetImageCacheTag(item, image);
+                        var tag = GetTagAndFillBlurhash(dto, item, image);
 
                         if (tag != null)
                         {
                             dto.ImageTags[image.Type] = tag;
                         }
-
-                        var hash = image.BlurHash;
-                        if (!string.IsNullOrEmpty(hash))
-                        {
-                            dto.ImageBlurHashes[image.Type] = image.BlurHash;
-                        }
                     }
                 }
             }
@@ -877,8 +936,7 @@ namespace Emby.Server.Implementations.Dto
                 if (albumParent != null)
                 {
                     dto.AlbumId = albumParent.Id;
-
-                    dto.AlbumPrimaryImageTag = GetImageCacheTag(albumParent, ImageType.Primary);
+                    dto.AlbumPrimaryImageTag = GetTagAndFillBlurhash(dto, albumParent, ImageType.Primary);
                 }
 
                 //if (options.ContainsField(ItemFields.MediaSourceCount))
@@ -1105,7 +1163,7 @@ namespace Emby.Server.Implementations.Dto
                     episodeSeries = episodeSeries ?? episode.Series;
                     if (episodeSeries != null)
                     {
-                        dto.SeriesPrimaryImageTag = GetImageCacheTag(episodeSeries, ImageType.Primary);
+                        dto.SeriesPrimaryImageTag = GetTagAndFillBlurhash(dto, episodeSeries, ImageType.Primary);
                     }
                 }
 
@@ -1151,7 +1209,7 @@ namespace Emby.Server.Implementations.Dto
                     series = series ?? season.Series;
                     if (series != null)
                     {
-                        dto.SeriesPrimaryImageTag = GetImageCacheTag(series, ImageType.Primary);
+                        dto.SeriesPrimaryImageTag = GetTagAndFillBlurhash(dto, series, ImageType.Primary);
                     }
                 }
             }
@@ -1281,7 +1339,7 @@ namespace Emby.Server.Implementations.Dto
                     if (image != null)
                     {
                         dto.ParentLogoItemId = GetDtoId(parent);
-                        dto.ParentLogoImageTag = GetImageCacheTag(parent, image);
+                        dto.ParentLogoImageTag = GetTagAndFillBlurhash(dto, parent, image);
                     }
                 }
                 if (artLimit > 0 && !(imageTags != null && imageTags.ContainsKey(ImageType.Art)) && dto.ParentArtItemId == null)
@@ -1291,7 +1349,7 @@ namespace Emby.Server.Implementations.Dto
                     if (image != null)
                     {
                         dto.ParentArtItemId = GetDtoId(parent);
-                        dto.ParentArtImageTag = GetImageCacheTag(parent, image);
+                        dto.ParentArtImageTag = GetTagAndFillBlurhash(dto, parent, image);
                     }
                 }
                 if (thumbLimit > 0 && !(imageTags != null && imageTags.ContainsKey(ImageType.Thumb)) && (dto.ParentThumbItemId == null || parent is Series) && !(parent is ICollectionFolder) && !(parent is UserView))
@@ -1301,7 +1359,7 @@ namespace Emby.Server.Implementations.Dto
                     if (image != null)
                     {
                         dto.ParentThumbItemId = GetDtoId(parent);
-                        dto.ParentThumbImageTag = GetImageCacheTag(parent, image);
+                        dto.ParentThumbImageTag = GetTagAndFillBlurhash(dto, parent, image);
                     }
                 }
                 if (backdropLimit > 0 && !((dto.BackdropImageTags != null && dto.BackdropImageTags.Length > 0) || (dto.ParentBackdropImageTags != null && dto.ParentBackdropImageTags.Length > 0)))
@@ -1311,7 +1369,7 @@ namespace Emby.Server.Implementations.Dto
                     if (images.Count > 0)
                     {
                         dto.ParentBackdropItemId = GetDtoId(parent);
-                        dto.ParentBackdropImageTags = GetImageTags(parent, images);
+                        dto.ParentBackdropImageTags = GetTagsAndFillBlurhashes(dto, parent, ImageType.Backdrop, images);
                     }
                 }
 
diff --git a/MediaBrowser.Model/Dto/BaseItemDto.cs b/MediaBrowser.Model/Dto/BaseItemDto.cs
index 734bcaf81..fc1cb01db 100644
--- a/MediaBrowser.Model/Dto/BaseItemDto.cs
+++ b/MediaBrowser.Model/Dto/BaseItemDto.cs
@@ -512,9 +512,10 @@ namespace MediaBrowser.Model.Dto
 
         /// <summary>
         /// Gets or sets the blurhashes for the image tags.
+        /// Maps image type to dictionary mapping image tag to blurhash value.
         /// </summary>
         /// <value>The blurhashes.</value>
-        public Dictionary<ImageType, string> ImageBlurHashes { get; set; }
+        public Dictionary<ImageType, Dictionary<string, string>> ImageBlurHashes { get; set; }
 
         /// <summary>
         /// Gets or sets the series studio.