Support clips Prim metadatum.

src/ascii-parser.cc

@@ -284,6 +284,9 @@ static void RegisterPrimMetas(
   // NOTE: items are expected to be all string type.
   metas["sdrMetadata"] = AsciiParser::VariableDef(value::kDictionary, "sdrMetadata");
 
+  metas["clips"] =
+      AsciiParser::VariableDef(value::kDictionary, "clips");
+
 
   // USDZ extension
   metas["sceneName"] = AsciiParser::VariableDef(value::kString, "sceneName");
@@ -2489,6 +2492,8 @@ bool AsciiParser::ParseMetaValue(const VariableDef &def, MetaVariable *outvar) {
 
   bool array_qual{false};
 
+  DCOUT("parseMeta: vartype " << vartype);
+
   if (endsWith(vartype, "[]")) {
     vartype = removeSuffix(vartype, "[]");
     array_qual = true;

src/pprinter.cc

@@ -466,6 +466,10 @@ std::string print_prim_metas(const PrimMeta &meta, const uint32_t indent) {
     ss << pprint::Indent(indent) << "active = " << to_string(meta.active.value()) << "\n";
   }
 
+  if (meta.clips) {
+    ss << print_customData(meta.clips.value(), "clips", indent);
+  }
+
   if (meta.instanceable) {
     ss << pprint::Indent(indent) << "instanceable = " << to_string(meta.instanceable.value()) << "\n";
   }

src/prim-types.cc

@@ -1791,6 +1791,14 @@ void PrimMetas::update_from(const PrimMetas &rhs, const bool override_authored)
     }
   }
 
+  if (rhs.clips) {
+    if (clips) {
+      OverrideDictionary(clips.value(), rhs.clips.value(), override_authored);
+    } else if (override_authored) {
+      clips = rhs.clips;
+    }
+  }
+
   if (rhs.customData) {
     if (customData) {
       OverrideDictionary(customData.value(), rhs.customData.value(), override_authored);

src/prim-types.hh

@@ -807,6 +807,7 @@ struct PrimMetas {
       sdrMetadata;  // 'sdrMetadata' (usdShade Prim only?)
 
   nonstd::optional<bool> instanceable; // 'instanceable'
+  nonstd::optional<Dictionary> clips; // 'clips'
 
   // String representation of Kind.
   // For user-defined Kind, it returns `_kind_str`
@@ -868,7 +869,7 @@ struct PrimMetas {
     return (active || hidden || kind || customData || references || payload ||
             inherits || variants || variantSets || specializes || displayName ||
             sceneName || doc || comment || unregisteredMetas.size() || meta.size() || apiSchemas ||
-            sdrMetadata || assetInfo || instanceable);
+            sdrMetadata || assetInfo || instanceable || clips);
   }
 
   //

src/usda-reader.cc

@@ -897,6 +897,24 @@ class USDAReader::Impl {
               "`dictionary`. got type `"
               << var.type_name() << "`");
         }
+      } else if (meta.first == "clips") {
+        DCOUT("clips. type = " << var.type_name());
+        if (var.type_id() == value::TypeTraits<Dictionary>::type_id()) {
+          if (auto pv = var.get_value<Dictionary>()) {
+            out->clips = pv.value();
+          } else {
+            PUSH_ERROR_AND_RETURN_TAG(kTag,
+                "(Internal error?) `clips` metadataum is not type "
+                "`dictionary`. got type `"
+                << var.type_name() << "`");
+          }
+
+        } else {
+          PUSH_ERROR_AND_RETURN(
+              "(Internal error?) `clips` metadataum is not type "
+              "`dictionary`. got type `"
+              << var.type_name() << "`");
+        }
       } else if (meta.first == "assetInfo") {
         DCOUT("assetInfo. type = " << var.type_name());
         if (auto pv = var.get_value<Dictionary>()) {

src/usdc-reader.cc

@@ -1829,6 +1829,15 @@ bool USDCReader::Impl::ParsePrimSpec(const crate::FieldValuePairVector &fvs,
             kTag, "`assetInfo` must be type `dictionary`, but got type `"
                       << fv.second.type_name() << "`");
       }
+    } else if (fv.first == "clips") {
+      // CustomData(dict)
+      if (auto pv = fv.second.as<CustomDataType>()) {
+        primMeta.clips = (*pv);
+      } else {
+        PUSH_ERROR_AND_RETURN_TAG(
+            kTag, "`clips` must be type `dictionary`, but got type `"
+                      << fv.second.type_name() << "`");
+      }
     } else if (fv.first == "kind") {
       if (auto pv = fv.second.as<value::token>()) {
 

tests/usda/clips-primmeta-001.usda

@@ -0,0 +1,14 @@
+#usda 1.0
+            over "GEO" (
+                clips = {
+                    dictionary geo = {
+                        double2[] active = [(1004, 0)]
+                        asset[] assetPaths = [@payload/animated_data.1004.usdc@]
+                        asset manifestAssetPath = @./clip.manifest.usda@
+                        string primPath = "/root/remi/body_M_hrc/GEO"
+                        double2[] times = []
+                    }
+                }
+            )
+{ } 
+