// 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.

//

#include "draco/compression/mesh/mesh_edgebreaker_decoder.h"

#include "draco/compression/mesh/mesh_edgebreaker_decoder_impl.h"

#include "draco/compression/mesh/mesh_edgebreaker_traversal_predictive_decoder.h"

#include "draco/compression/mesh/mesh_edgebreaker_traversal_valence_decoder.h"

namespace draco {

MeshEdgebreakerDecoder::MeshEdgebreakerDecoder() {}

bool MeshEdgebreakerDecoder::CreateAttributesDecoder(int32_t att_decoder_id) {

  return impl_->CreateAttributesDecoder(att_decoder_id);

}

bool MeshEdgebreakerDecoder::InitializeDecoder() {

  uint8_t traversal_decoder_type;

  if (!buffer()->Decode(&traversal_decoder_type)) {

    return false;

  }

  impl_ = nullptr;

  if (traversal_decoder_type == MESH_EDGEBREAKER_STANDARD_ENCODING) {

#ifdef DRACO_STANDARD_EDGEBREAKER_SUPPORTED

    impl_ = std::unique_ptr<MeshEdgebreakerDecoderImplInterface>(

        new MeshEdgebreakerDecoderImpl<MeshEdgebreakerTraversalDecoder>());

#endif

  } else if (traversal_decoder_type == MESH_EDGEBREAKER_PREDICTIVE_ENCODING) {

#ifdef DRACO_BACKWARDS_COMPATIBILITY_SUPPORTED

#ifdef DRACO_PREDICTIVE_EDGEBREAKER_SUPPORTED

    impl_ = std::unique_ptr<MeshEdgebreakerDecoderImplInterface>(

        new MeshEdgebreakerDecoderImpl<

            MeshEdgebreakerTraversalPredictiveDecoder>());

#endif

#endif

  } else if (traversal_decoder_type == MESH_EDGEBREAKER_VALENCE_ENCODING) {

    impl_ = std::unique_ptr<MeshEdgebreakerDecoderImplInterface>(

        new MeshEdgebreakerDecoderImpl<

            MeshEdgebreakerTraversalValenceDecoder>());

  }

  if (!impl_) {

    return false;

  }

  if (!impl_->Init(this)) {

    return false;

  }

  return true;

}

bool MeshEdgebreakerDecoder::DecodeConnectivity() {

  return impl_->DecodeConnectivity();

}

bool MeshEdgebreakerDecoder::OnAttributesDecoded() {

  return impl_->OnAttributesDecoded();

}

}  // namespace draco