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Differential D6342 Diff 20011 extern/draco/dracoenc/src/draco/io/mesh_io.cc

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extern/draco/dracoenc/src/draco/io/mesh_io.cc

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#include <fstream> #include <fstream>
#include "draco/io/file_utils.h"
#include "draco/io/obj_decoder.h" #include "draco/io/obj_decoder.h"
#include "draco/io/parser_utils.h"
#include "draco/io/ply_decoder.h" #include "draco/io/ply_decoder.h"
namespace draco { namespace draco {
namespace {
// Returns the file extension in lowercase if present, else ""
inline std::string LowercaseFileExtension(const std::string &filename) {
size_t pos = filename.find_last_of('.');
if (pos == std::string::npos || pos >= filename.length() - 1)
return "";
return parser::ToLower(filename.substr(pos + 1));
}
} // namespace
StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name) { StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name) {
return ReadMeshFromFile(file_name, false); const Options options;
return ReadMeshFromFile(file_name, options);
} }
StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name, StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name,
bool use_metadata) { bool use_metadata) {
Options options;
options.SetBool("use_metadata", use_metadata);
return ReadMeshFromFile(file_name, options);
}
StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name,
const Options &options) {
std::unique_ptr<Mesh> mesh(new Mesh()); std::unique_ptr<Mesh> mesh(new Mesh());
// Analyze file extension. // Analyze file extension.
const std::string extension = LowercaseFileExtension(file_name); const std::string extension = LowercaseFileExtension(file_name);
if (extension == "obj") { if (extension == "obj") {
// Wavefront OBJ file format. // Wavefront OBJ file format.
ObjDecoder obj_decoder; ObjDecoder obj_decoder;
obj_decoder.set_use_metadata(use_metadata); obj_decoder.set_use_metadata(options.GetBool("use_metadata", false));
const Status obj_status = obj_decoder.DecodeFromFile(file_name, mesh.get()); const Status obj_status = obj_decoder.DecodeFromFile(file_name, mesh.get());
if (!obj_status.ok()) if (!obj_status.ok())
return obj_status; return obj_status;
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if (extension == "ply") { if (extension == "ply") {
// Wavefront PLY file format. // Wavefront PLY file format.
PlyDecoder ply_decoder; PlyDecoder ply_decoder;
if (!ply_decoder.DecodeFromFile(file_name, mesh.get())) DRACO_RETURN_IF_ERROR(ply_decoder.DecodeFromFile(file_name, mesh.get()));
return Status(Status::ERROR, "Unknown error.");
return std::move(mesh); return std::move(mesh);
} }
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// draco encoding methods. // draco encoding methods.
std::ifstream is(file_name.c_str(), std::ios::binary); std::ifstream is(file_name.c_str(), std::ios::binary);
if (!is) if (!is)
return Status(Status::ERROR, "Invalid input stream."); return Status(Status::DRACO_ERROR, "Invalid input stream.");
if (!ReadMeshFromStream(&mesh, is).good()) if (!ReadMeshFromStream(&mesh, is).good())
return Status(Status::ERROR, return Status(Status::DRACO_ERROR,
"Unknown error."); // Error reading the stream. "Unknown error."); // Error reading the stream.
return std::move(mesh); return std::move(mesh);
} }
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