90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
// 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_IO_POINT_CLOUD_IO_H_
|
|
#define DRACO_IO_POINT_CLOUD_IO_H_
|
|
|
|
#include "draco/compression/config/compression_shared.h"
|
|
#include "draco/compression/decode.h"
|
|
#include "draco/compression/expert_encode.h"
|
|
|
|
namespace draco {
|
|
|
|
template <typename OutStreamT>
|
|
OutStreamT WritePointCloudIntoStream(const PointCloud *pc, OutStreamT &&os,
|
|
PointCloudEncodingMethod method,
|
|
const EncoderOptions &options) {
|
|
EncoderBuffer buffer;
|
|
EncoderOptions local_options = options;
|
|
ExpertEncoder encoder(*pc);
|
|
encoder.Reset(local_options);
|
|
encoder.SetEncodingMethod(method);
|
|
if (!encoder.EncodeToBuffer(&buffer).ok()) {
|
|
os.setstate(std::ios_base::badbit);
|
|
return os;
|
|
}
|
|
|
|
os.write(static_cast<const char *>(buffer.data()), buffer.size());
|
|
|
|
return os;
|
|
}
|
|
|
|
template <typename OutStreamT>
|
|
OutStreamT WritePointCloudIntoStream(const PointCloud *pc, OutStreamT &&os,
|
|
PointCloudEncodingMethod method) {
|
|
const EncoderOptions options = EncoderOptions::CreateDefaultOptions();
|
|
return WritePointCloudIntoStream(pc, os, method, options);
|
|
}
|
|
|
|
template <typename OutStreamT>
|
|
OutStreamT &WritePointCloudIntoStream(const PointCloud *pc, OutStreamT &&os) {
|
|
return WritePointCloudIntoStream(pc, os, POINT_CLOUD_SEQUENTIAL_ENCODING);
|
|
}
|
|
|
|
template <typename InStreamT>
|
|
InStreamT &ReadPointCloudFromStream(std::unique_ptr<PointCloud> *point_cloud,
|
|
InStreamT &&is) {
|
|
// Determine size of stream and write into a vector
|
|
const auto start_pos = is.tellg();
|
|
is.seekg(0, std::ios::end);
|
|
const std::streampos is_size = is.tellg() - start_pos;
|
|
is.seekg(start_pos);
|
|
std::vector<char> data(is_size);
|
|
is.read(&data[0], is_size);
|
|
|
|
// Create a point cloud from that data.
|
|
DecoderBuffer buffer;
|
|
buffer.Init(&data[0], data.size());
|
|
Decoder decoder;
|
|
auto statusor = decoder.DecodePointCloudFromBuffer(&buffer);
|
|
*point_cloud = std::move(statusor).value();
|
|
if (!statusor.ok() || *point_cloud == nullptr) {
|
|
is.setstate(std::ios_base::badbit);
|
|
}
|
|
|
|
return is;
|
|
}
|
|
|
|
// Reads a point cloud from a file. The function automatically chooses the
|
|
// correct decoder based on the extension of the files. Currently, .obj and .ply
|
|
// files are supported. Other file extensions are processed by the default
|
|
// draco::PointCloudDecoder.
|
|
// Returns nullptr with an error status if the decoding failed.
|
|
StatusOr<std::unique_ptr<PointCloud>> ReadPointCloudFromFile(
|
|
const std::string &file_name);
|
|
|
|
} // namespace draco
|
|
|
|
#endif // DRACO_IO_POINT_CLOUD_IO_H_
|