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diff --git a/extern/draco/draco/src/draco/compression/attributes/sequential_integer_attribute_decoder.h b/extern/draco/draco/src/draco/compression/attributes/sequential_integer_attribute_decoder.h
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+++ b/extern/draco/draco/src/draco/compression/attributes/sequential_integer_attribute_decoder.h
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+// Copyright 2016 The Draco Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#ifndef DRACO_COMPRESSION_ATTRIBUTES_SEQUENTIAL_INTEGER_ATTRIBUTE_DECODER_H_
+#define DRACO_COMPRESSION_ATTRIBUTES_SEQUENTIAL_INTEGER_ATTRIBUTE_DECODER_H_
+
+#include "draco/compression/attributes/prediction_schemes/prediction_scheme_decoder.h"
+#include "draco/compression/attributes/sequential_attribute_decoder.h"
+#include "draco/draco_features.h"
+
+namespace draco {
+
+// Decoder for attributes encoded with the SequentialIntegerAttributeEncoder.
+class SequentialIntegerAttributeDecoder : public SequentialAttributeDecoder {
+ public:
+  SequentialIntegerAttributeDecoder();
+  bool Init(PointCloudDecoder *decoder, int attribute_id) override;
+
+  bool TransformAttributeToOriginalFormat(
+      const std::vector<PointIndex> &point_ids) override;
+
+ protected:
+  bool DecodeValues(const std::vector<PointIndex> &point_ids,
+                    DecoderBuffer *in_buffer) override;
+  virtual bool DecodeIntegerValues(const std::vector<PointIndex> &point_ids,
+                                   DecoderBuffer *in_buffer);
+
+  // Returns a prediction scheme that should be used for decoding of the
+  // integer values.
+  virtual std::unique_ptr<PredictionSchemeTypedDecoderInterface<int32_t>>
+  CreateIntPredictionScheme(PredictionSchemeMethod method,
+                            PredictionSchemeTransformType transform_type);
+
+  // Returns the number of integer attribute components. In general, this
+  // can be different from the number of components of the input attribute.
+  virtual int32_t GetNumValueComponents() const {
+    return attribute()->num_components();
+  }
+
+  // Called after all integer values are decoded. The implementation should
+  // use this method to store the values into the attribute.
+  virtual bool StoreValues(uint32_t num_values);
+
+  void PreparePortableAttribute(int num_entries, int num_components);
+
+  int32_t *GetPortableAttributeData() {
+    if (portable_attribute()->size() == 0) {
+      return nullptr;
+    }
+    return reinterpret_cast<int32_t *>(
+        portable_attribute()->GetAddress(AttributeValueIndex(0)));
+  }
+
+ private:
+  // Stores decoded values into the attribute with a data type AttributeTypeT.
+  template <typename AttributeTypeT>
+  void StoreTypedValues(uint32_t num_values);
+
+  std::unique_ptr<PredictionSchemeTypedDecoderInterface<int32_t>>
+      prediction_scheme_;
+};
+
+}  // namespace draco
+
+#endif  // DRACO_COMPRESSION_ATTRIBUTES_SEQUENTIAL_INTEGER_ATTRIBUTE_DECODER_H_