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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_DECODE_H_
+#define DRACO_COMPRESSION_DECODE_H_
+
+#include "draco/compression/config/compression_shared.h"
+#include "draco/compression/config/decoder_options.h"
+#include "draco/core/decoder_buffer.h"
+#include "draco/core/status_or.h"
+#include "draco/draco_features.h"
+#include "draco/mesh/mesh.h"
+
+namespace draco {
+
+// Class responsible for decoding of meshes and point clouds that were
+// compressed by a Draco encoder.
+class Decoder {
+ public:
+  // Returns the geometry type encoded in the input |in_buffer|.
+  // The return value is one of POINT_CLOUD, MESH or INVALID_GEOMETRY in case
+  // the input data is invalid.
+  // The decoded geometry type can be used to choose an appropriate decoding
+  // function for a given geometry type (see below).
+  static StatusOr<EncodedGeometryType> GetEncodedGeometryType(
+      DecoderBuffer *in_buffer);
+
+  // Decodes point cloud from the provided buffer. The buffer must be filled
+  // with data that was encoded with either the EncodePointCloudToBuffer or
+  // EncodeMeshToBuffer methods in encode.h. In case the input buffer contains
+  // mesh, the returned instance can be down-casted to Mesh.
+  StatusOr<std::unique_ptr<PointCloud>> DecodePointCloudFromBuffer(
+      DecoderBuffer *in_buffer);
+
+  // Decodes a triangular mesh from the provided buffer. The mesh must be filled
+  // with data that was encoded using the EncodeMeshToBuffer method in encode.h.
+  // The function will return nullptr in case the input is invalid or if it was
+  // encoded with the EncodePointCloudToBuffer method.
+  StatusOr<std::unique_ptr<Mesh>> DecodeMeshFromBuffer(
+      DecoderBuffer *in_buffer);
+
+  // Decodes the buffer into a provided geometry. If the geometry is
+  // incompatible with the encoded data. For example, when |out_geometry| is
+  // draco::Mesh while the data contains a point cloud, the function will return
+  // an error status.
+  Status DecodeBufferToGeometry(DecoderBuffer *in_buffer,
+                                PointCloud *out_geometry);
+  Status DecodeBufferToGeometry(DecoderBuffer *in_buffer, Mesh *out_geometry);
+
+  // When set, the decoder is going to skip attribute transform for a given
+  // attribute type. For example for quantized attributes, the decoder would
+  // skip the dequantization step and the returned geometry would contain an
+  // attribute with quantized values. The attribute would also contain an
+  // instance of AttributeTransform class that is used to describe the skipped
+  // transform, including all parameters that are needed to perform the
+  // transform manually.
+  void SetSkipAttributeTransform(GeometryAttribute::Type att_type);
+
+  // Returns the options instance used by the decoder that can be used by users
+  // to control the decoding process.
+  DecoderOptions *options() { return &options_; }
+
+ private:
+  DecoderOptions options_;
+};
+
+}  // namespace draco
+
+#endif  // DRACO_COMPRESSION_DECODE_H_