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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_POINT_CLOUD_ALGORITHMS_FLOAT_POINTS_TREE_DECODER_H_
#define DRACO_COMPRESSION_POINT_CLOUD_ALGORITHMS_FLOAT_POINTS_TREE_DECODER_H_
#include <memory>
#include "draco/compression/config/compression_shared.h"
#include "draco/compression/point_cloud/algorithms/point_cloud_compression_method.h"
#include "draco/compression/point_cloud/algorithms/point_cloud_types.h"
#include "draco/compression/point_cloud/algorithms/quantize_points_3.h"
#include "draco/core/decoder_buffer.h"
namespace draco {
// Decodes a point cloud encoded by PointCloudTreeEncoder.
class FloatPointsTreeDecoder {
public:
FloatPointsTreeDecoder();
// Decodes a point cloud from |buffer|.
template <class OutputIteratorT>
bool DecodePointCloud(DecoderBuffer *buffer, OutputIteratorT &out);
#ifndef DRACO_OLD_GCC
template <class OutputIteratorT>
bool DecodePointCloud(DecoderBuffer *buffer, OutputIteratorT &&out);
#endif // DRACO_OLD_GCC
// Initializes a DecoderBuffer from |data|, and calls function above.
template <class OutputIteratorT>
bool DecodePointCloud(const char *data, size_t data_size,
OutputIteratorT out) {
if (data == 0 || data_size <= 0)
return false;
DecoderBuffer buffer;
buffer.Init(data, data_size);
buffer.set_bitstream_version(kDracoPointCloudBitstreamVersion);
return DecodePointCloud(&buffer, out);
}
uint32_t quantization_bits() const { return qinfo_.quantization_bits; }
uint32_t compression_level() const { return compression_level_; }
float range() const { return qinfo_.range; }
uint32_t num_points() const { return num_points_; }
uint32_t version() const { return version_; }
std::string identification_string() const {
if (method_ == KDTREE) {
return "FloatPointsTreeDecoder: IntegerPointsKDTreeDecoder";
} else {
return "FloatPointsTreeDecoder: Unsupported Method";
}
}
private:
bool DecodePointCloudKdTreeInternal(DecoderBuffer *buffer,
std::vector<Point3ui> *qpoints);
static const uint32_t version_ = 3;
QuantizationInfo qinfo_;
PointCloudCompressionMethod method_;
uint32_t num_points_;
uint32_t compression_level_;
};
#ifndef DRACO_OLD_GCC
// TODO(vytyaz): Reenable once USD migrates from GCC 4.8 to a higher version
// that can disambiguate calls to overloaded methods taking rvalue reference.
template <class OutputIteratorT>
bool FloatPointsTreeDecoder::DecodePointCloud(DecoderBuffer *buffer,
OutputIteratorT &&out) {
OutputIteratorT local = std::forward<OutputIteratorT>(out);
return DecodePointCloud(buffer, local);
}
#endif // DRACO_OLD_GCC
template <class OutputIteratorT>
bool FloatPointsTreeDecoder::DecodePointCloud(DecoderBuffer *buffer,
OutputIteratorT &out) {
std::vector<Point3ui> qpoints;
uint32_t decoded_version;
if (!buffer->Decode(&decoded_version))
return false;
if (decoded_version == 3) {
int8_t method_number;
if (!buffer->Decode(&method_number))
return false;
method_ = static_cast<PointCloudCompressionMethod>(method_number);
if (method_ == KDTREE) {
if (!DecodePointCloudKdTreeInternal(buffer, &qpoints))
return false;
} else { // Unsupported method.
fprintf(stderr, "Method not supported. \n");
return false;
}
} else if (decoded_version == 2) { // Version 2 only uses KDTREE method.
if (!DecodePointCloudKdTreeInternal(buffer, &qpoints))
return false;
} else { // Unsupported version.
fprintf(stderr, "Version not supported. \n");
return false;
}
DequantizePoints3(qpoints.begin(), qpoints.end(), qinfo_, out);
return true;
}
} // namespace draco
#endif // DRACO_COMPRESSION_POINT_CLOUD_ALGORITHMS_FLOAT_POINTS_TREE_DECODER_H_
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