// 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_QUANTIZATION_ATTRIBUTE_ENCODER_H_
#define DRACO_COMPRESSION_ATTRIBUTES_SEQUENTIAL_QUANTIZATION_ATTRIBUTE_ENCODER_H_

#include "draco/attributes/attribute_quantization_transform.h"
#include "draco/compression/attributes/sequential_integer_attribute_encoder.h"

namespace draco {

class MeshEncoder;

// Attribute encoder that quantizes floating point attribute values. The
// quantized values can be optionally compressed using an entropy coding.
class SequentialQuantizationAttributeEncoder
    : public SequentialIntegerAttributeEncoder {
 public:
  SequentialQuantizationAttributeEncoder();
  uint8_t GetUniqueId() const override {
    return SEQUENTIAL_ATTRIBUTE_ENCODER_QUANTIZATION;
  }
  bool Init(PointCloudEncoder *encoder, int attribute_id) override;

  bool IsLossyEncoder() const override { return true; }

  bool EncodeDataNeededByPortableTransform(EncoderBuffer *out_buffer) override;

 protected:
  // Put quantized values in portable attribute for sequential encoding.
  bool PrepareValues(const std::vector<PointIndex> &point_ids,
                     int num_points) override;

 private:
  // Used for the quantization.
  AttributeQuantizationTransform attribute_quantization_transform_;
};

}  // namespace draco

#endif  // DRACO_COMPRESSION_ATTRIBUTES_SEQUENTIAL_QUANTIZATION_ATTRIBUTE_ENCODER_H_