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