#894 fixed motion photo detection for xml variant of google container item

android/app/src/main/kotlin/deckers/thibault/aves/metadata/MultiPage.kt

@@ -274,7 +274,7 @@ object MultiPage {
         var foundXmp = false
 
         fun processXmp(xmpMeta: XMPMeta) {
-            offsetFromEnd = GoogleXMP.getTrailingVideoOffsetFromEnd(xmpMeta)
+            offsetFromEnd = offsetFromEnd ?: GoogleXMP.getTrailingVideoOffsetFromEnd(xmpMeta)
         }
 
         try {

android/app/src/main/kotlin/deckers/thibault/aves/metadata/xmp/GoogleXMP.kt

@@ -109,10 +109,11 @@ object GoogleXMP {
                 var hasImage = false
                 var hasVideo = false
                 for (i in 1 until count + 1) {
-                    val mime = meta.getSafeStructField(listOf(GCONTAINER_DIRECTORY_PROP_NAME, i, GCONTAINER_ITEM_PROP_NAME, GCONTAINER_ITEM_MIME_PROP_NAME))?.value
+                    val mime = getContainerItemAttribute(meta, i, GCONTAINER_ITEM_MIME_PROP_NAME)
-                    val length = meta.getSafeStructField(listOf(GCONTAINER_DIRECTORY_PROP_NAME, i, GCONTAINER_ITEM_PROP_NAME, GCONTAINER_ITEM_LENGTH_PROP_NAME))?.value
+                    val length = getContainerItemAttribute(meta, i, GCONTAINER_ITEM_LENGTH_PROP_NAME)
-                    hasImage = hasImage || MimeTypes.isImage(mime) && length != null
+                    // `length` is not always provided for the image item
-                    hasVideo = hasVideo || MimeTypes.isVideo(mime) && length != null
+                    hasImage = hasImage || MimeTypes.isImage(mime)
+                    hasVideo = hasVideo || (MimeTypes.isVideo(mime) && length != null)
                 }
                 if (hasImage && hasVideo) return true
             }
@@ -128,6 +129,13 @@ object GoogleXMP {
         return false
     }
 
+    private fun getContainerItemAttribute(meta: XMPMeta, i: Int, attribute: XMPPropName): String? {
+        // variant of `Container:Item` with `<rdf:li rdf:parseType="Resource">`
+        val mime = meta.getSafeStructField(listOf(GCONTAINER_DIRECTORY_PROP_NAME, i, GCONTAINER_ITEM_PROP_NAME, attribute))?.value
+        // variant of `Container:Item` with `<rdf:li>`
+        return mime ?: meta.getSafeStructField(listOf(GCONTAINER_DIRECTORY_PROP_NAME, i, attribute))?.value
+    }
+
     fun isPanorama(meta: XMPMeta): Boolean {
         try {
             if (gpanoRequiredProps.all { meta.doesPropExist(it) }) return true
@@ -166,10 +174,9 @@ object GoogleXMP {
             // `Container` motion photo
             val count = meta.countPropArrayItems(GCONTAINER_DIRECTORY_PROP_NAME)
             for (i in 1 until count + 1) {
-                val mime = meta.getSafeStructField(listOf(GCONTAINER_DIRECTORY_PROP_NAME, i, GCONTAINER_ITEM_PROP_NAME, GCONTAINER_ITEM_MIME_PROP_NAME))?.value
+                val mime = getContainerItemAttribute(meta, i, GCONTAINER_ITEM_MIME_PROP_NAME)
-                val length = meta.getSafeStructField(listOf(GCONTAINER_DIRECTORY_PROP_NAME, i, GCONTAINER_ITEM_PROP_NAME, GCONTAINER_ITEM_LENGTH_PROP_NAME))?.value
+                if (MimeTypes.isVideo(mime)) {
-                if (MimeTypes.isVideo(mime) && length != null) {
+                    getContainerItemAttribute(meta, i, GCONTAINER_ITEM_LENGTH_PROP_NAME)?.let { offsetFromEnd = it.toLong() }
-                    offsetFromEnd = length.toLong()
                 }
             }
         }

lib/ref/metadata/xmp.dart

@@ -24,6 +24,7 @@ class XmpNamespaces {
   static const gAudio = 'http://ns.google.com/photos/1.0/audio/';
   static const gCamera = 'http://ns.google.com/photos/1.0/camera/';
   static const gContainer = 'http://ns.google.com/photos/1.0/container/';
+  static const gContainerItem = 'http://ns.google.com/photos/1.0/container/item/';
   static const gCreations = 'http://ns.google.com/photos/1.0/creations/';
   static const gDepth = 'http://ns.google.com/photos/1.0/depthmap/';
   static const gDevice = 'http://ns.google.com/photos/dd/1.0/device/';

lib/widgets/viewer/info/metadata/xmp_namespaces.dart

@@ -90,7 +90,11 @@ class XmpNamespace extends Equatable {
   List<Widget> buildNamespaceSection(BuildContext context) {
     final props = rawProps.entries
         .map((kv) {
-          final prop = XmpProp(kv.key, kv.value);
+          final key = kv.key;
+          if (skippedProps.any((pattern) => pattern.allMatches(key).isNotEmpty)) {
+            return null;
+          }
+          final prop = XmpProp(key, kv.value);
           var extracted = false;
           cards.forEach((card) => extracted |= card.extract(prop));
           return extracted ? null : prop;
@@ -134,6 +138,8 @@ class XmpNamespace extends Equatable {
         : [];
   }
 
+  Set<RegExp> get skippedProps => {};
+
   List<XmpCardData> get cards => [];
 
   String formatValue(XmpProp prop) => prop.value;

lib/widgets/viewer/info/metadata/xmp_ns/google.dart

@@ -73,11 +73,26 @@ class XmpGCameraNamespace extends XmpGoogleNamespace {
 }
 
 class XmpGContainer extends XmpNamespace {
-  XmpGContainer({required super.schemaRegistryPrefixes, required super.rawProps}) : super(nsUri: XmpNamespaces.gContainer);
+  late final String _gContainerItemNsPrefix;
+  late final String _rdfNsPrefix;
+
+  XmpGContainer({required super.schemaRegistryPrefixes, required super.rawProps}) : super(nsUri: XmpNamespaces.gContainer) {
+    _gContainerItemNsPrefix = XmpNamespace.prefixForUri(schemaRegistryPrefixes, XmpNamespaces.gContainerItem);
+    _rdfNsPrefix = XmpNamespace.prefixForUri(schemaRegistryPrefixes, XmpNamespaces.rdf);
+  }
+
+  @override
+  late final Set<RegExp> skippedProps = {
+    // variant of `Container:Item` with `<rdf:li>`
+    RegExp(nsPrefix + r'Directory\[(\d+)\]/' + _rdfNsPrefix + r'type'),
+  };
 
   @override
   late final List<XmpCardData> cards = [
+    // variant of `Container:Item` with `<rdf:li rdf:parseType="Resource">`
     XmpCardData(RegExp(nsPrefix + r'Directory\[(\d+)\]/' + nsPrefix + r'Item/(.*)'), title: 'Directory Item'),
+    // variant of `Container:Item` with `<rdf:li>`
+    XmpCardData(RegExp(nsPrefix + r'Directory\[(\d+)\]/(' + _gContainerItemNsPrefix + r'.*)'), title: 'Directory Item'),
   ];
 }