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27cf67cd0f
1. Fixed crasher when dependent attributes were encoded. 2. Improved documentation to PointCloud::AddAttribute() methods 3. Fixed some of the inconsistencies with int64_t vs size_t usage 4. Fixed potential IO problems when the input stream does not start from 0.
86 lines
2.9 KiB
C++
86 lines
2.9 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_IO_POINT_CLOUD_IO_H_
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#define DRACO_IO_POINT_CLOUD_IO_H_
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#include "compression/config/compression_shared.h"
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#include "compression/decode.h"
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#include "compression/encode.h"
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namespace draco {
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template <typename OutStreamT>
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OutStreamT WritePointCloudIntoStream(const PointCloud *pc, OutStreamT &&os,
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PointCloudEncodingMethod method,
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const EncoderOptions &options) {
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EncoderBuffer buffer;
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EncoderOptions local_options = options;
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local_options.SetGlobalInt("encoding_method", method);
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if (!EncodePointCloudToBuffer(*pc, local_options, &buffer)) {
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os.setstate(std::ios_base::badbit);
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return os;
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}
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os.write(static_cast<const char *>(buffer.data()), buffer.size());
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return os;
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}
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template <typename OutStreamT>
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OutStreamT WritePointCloudIntoStream(const PointCloud *pc, OutStreamT &&os,
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PointCloudEncodingMethod method) {
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const EncoderOptions options = CreateDefaultEncoderOptions();
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return WritePointCloudIntoStream(pc, os, method, options);
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}
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template <typename OutStreamT>
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OutStreamT &WritePointCloudIntoStream(const PointCloud *pc, OutStreamT &&os) {
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return WritePointCloudIntoStream(pc, os, POINT_CLOUD_SEQUENTIAL_ENCODING);
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}
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template <typename InStreamT>
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InStreamT &ReadPointCloudFromStream(std::unique_ptr<PointCloud> *point_cloud,
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InStreamT &&is) {
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// Determine size of stream and write into a vector
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const auto start_pos = is.tellg();
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is.seekg(0, std::ios::end);
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const std::streampos is_size = is.tellg() - start_pos;
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is.seekg(start_pos);
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std::vector<char> data(is_size);
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is.read(&data[0], is_size);
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// Create a point cloud from that data.
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DecoderBuffer buffer;
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buffer.Init(&data[0], data.size());
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*point_cloud = DecodePointCloudFromBuffer(&buffer);
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if (*point_cloud == nullptr) {
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is.setstate(std::ios_base::badbit);
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}
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return is;
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}
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// Reads a point cloud from a file. The function automatically chooses the
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// correct decoder based on the extension of the files. Currently, .obj and .ply
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// files are supported. Other file extensions are processed by the default
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// draco::PointCloudDecoder.
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// Returns nullptr if the decoding failed.
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std::unique_ptr<PointCloud> ReadPointCloudFromFile(
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const std::string &file_name);
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} // namespace draco
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#endif // DRACO_IO_POINT_CLOUD_IO_H_
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