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73bb3c8530
- Improved compression for triangular meshes (~10%) - Added WebAssembly decoder - Code cleanup + robustness fixes
75 lines
3.2 KiB
C++
75 lines
3.2 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_NORMAL_ATTRIBUTE_DECODER_H_
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#define DRACO_COMPRESSION_ATTRIBUTES_SEQUENTIAL_NORMAL_ATTRIBUTE_DECODER_H_
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#include "compression/attributes/prediction_schemes/prediction_scheme_decoder_factory.h"
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#include "compression/attributes/prediction_schemes/prediction_scheme_normal_octahedron_canonicalized_transform.h"
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#include "compression/attributes/prediction_schemes/prediction_scheme_normal_octahedron_transform.h"
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#include "compression/attributes/sequential_integer_attribute_decoder.h"
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namespace draco {
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// Decoder for attributes encoded with SequentialNormalAttributeEncoder.
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class SequentialNormalAttributeDecoder
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: public SequentialIntegerAttributeDecoder {
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public:
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SequentialNormalAttributeDecoder();
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bool Initialize(PointCloudDecoder *decoder, int attribute_id) override;
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protected:
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int32_t GetNumValueComponents() const override {
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return 2; // We quantize everything into two components.
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}
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bool DecodeIntegerValues(const std::vector<PointIndex> &point_ids,
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DecoderBuffer *in_buffer) override;
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bool StoreValues(uint32_t num_points) override;
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private:
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int32_t quantization_bits_;
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std::unique_ptr<PredictionSchemeTypedInterface<int32_t>>
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CreateIntPredictionScheme(
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PredictionSchemeMethod method,
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PredictionSchemeTransformType transform_type) override {
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switch (transform_type) {
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case PREDICTION_TRANSFORM_NORMAL_OCTAHEDRON: {
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typedef PredictionSchemeNormalOctahedronTransform<int32_t> Transform;
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// At this point the decoder has not read the quantization bits,
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// which is why we must construct the transform by default.
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// See Transform.DecodeTransformData for more details.
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return CreatePredictionSchemeForDecoder<int32_t, Transform>(
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method, attribute_id(), decoder());
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}
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case PREDICTION_TRANSFORM_NORMAL_OCTAHEDRON_CANONICALIZED: {
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typedef PredictionSchemeNormalOctahedronCanonicalizedTransform<int32_t>
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Transform;
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// At this point the decoder has not read the quantization bits,
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// which is why we must construct the transform by default.
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// See Transform.DecodeTransformData for more details.
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return CreatePredictionSchemeForDecoder<int32_t, Transform>(
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method, attribute_id(), decoder());
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}
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default:
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return nullptr; // Currently, we support only octahedron transform and
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// octahedron transform canonicalized.
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}
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}
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};
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} // namespace draco
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#endif // DRACO_COMPRESSION_ATTRIBUTES_SEQUENTIAL_NORMAL_ATTRIBUTE_DECODER_H_
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