OpenVDB: Archive.h Source File

OpenVDB 8.1.0

Archive.h
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1 // Copyright Contributors to the OpenVDB Project
2 // SPDX-License-Identifier: MPL-2.0
3
4 #ifndef OPENVDB_IO_ARCHIVE_HAS_BEEN_INCLUDED
5 #define OPENVDB_IO_ARCHIVE_HAS_BEEN_INCLUDED
6
7 #include <openvdb/version.h>
8 #include "Compression.h" // for COMPRESS_ZIP, etc.
9 #include <openvdb/Grid.h>
10 #include <openvdb/MetaMap.h>
11 #include <openvdb/Platform.h>
12 #include <openvdb/version.h> // for VersionId
13 #include <boost/uuid/uuid.hpp>
14 #include <cstdint>
15 #include <iosfwd>
16 #include <map>
17 #include <memory>
18 #include <string>
19
20
21 class TestFile;
22
23 namespace openvdb {
24 OPENVDB_USE_VERSION_NAMESPACE
25 namespace OPENVDB_VERSION_NAME {
26 namespace io {
27
28 class GridDescriptor;
29
30
32 class OPENVDB_API Archive
33 {
34 public:
35 using Ptr = SharedPtr<Archive>;
36 using ConstPtr = SharedPtr<const Archive>;
37
38 static const uint32_t DEFAULT_COMPRESSION_FLAGS;
39
40 Archive();
41 Archive(const Archive&) = default;
42 Archive& operator=(const Archive&) = default;
43 virtual ~Archive();
44
46 virtual Ptr copy() const;
47
50 std::string getUniqueTag() const;
52 bool isIdentical(const std::string& uuidStr) const;
53
55 uint32_t fileVersion() const { return mFileVersion; }
58 VersionId libraryVersion() const { return mLibraryVersion; }
61 std::string version() const;
62
65 bool isInstancingEnabled() const { return mEnableInstancing; }
69 void setInstancingEnabled(bool b) { mEnableInstancing = b; }
70
72 static bool hasBloscCompression();
73
75 static bool hasZLibCompression();
76
78 uint32_t compression() const { return mCompression; }
83 void setCompression(uint32_t c) { mCompression = c; }
84
87 bool isGridStatsMetadataEnabled() const { return mEnableGridStats; }
90 void setGridStatsMetadataEnabled(bool b) { mEnableGridStats = b; }
91
93 virtual void write(const GridCPtrVec&, const MetaMap& = MetaMap()) const {}
94
100 static bool isDelayedLoadingEnabled();
101
102 protected:
105 bool inputHasGridOffsets() const { return mInputHasGridOffsets; }
106 void setInputHasGridOffsets(bool b) { mInputHasGridOffsets = b; }
107
112 void setFormatVersion(std::istream&);
113
119 void setLibraryVersion(std::istream&);
120
123 void setDataCompression(std::istream&);
124
127 void setGridCompression(std::ostream&, const GridBase&) const;
130 static void readGridCompression(std::istream&);
131
133 static int32_t readGridCount(std::istream&);
134
136 static void readGrid(GridBase::Ptr, const GridDescriptor&, std::istream&);
139 static void readGrid(GridBase::Ptr, const GridDescriptor&, std::istream&, const BBoxd&);
142 static void readGrid(GridBase::Ptr, const GridDescriptor&, std::istream&, const CoordBBox&);
143
144 using NamedGridMap = std::map<Name /*uniqueName*/, GridBase::Ptr>;
145
148 void connectInstance(const GridDescriptor&, const NamedGridMap&) const;
149
153 void writeGrid(GridDescriptor&, GridBase::ConstPtr, std::ostream&, bool seekable) const;
158 void writeGridInstance(GridDescriptor&, GridBase::ConstPtr,
159 std::ostream&, bool seekable) const;
160
163 bool readHeader(std::istream&);
167 void writeHeader(std::ostream&, bool seekable) const;
168
170 void write(std::ostream&, const GridPtrVec&, bool seekable, const MetaMap& = MetaMap()) const;
172 void write(std::ostream&, const GridCPtrVec&, bool seekable, const MetaMap& = MetaMap()) const;
174
175 private:
176 friend class ::TestFile;
177
179 uint32_t mFileVersion;
181 VersionId mLibraryVersion;
183 mutable boost::uuids::uuid mUuid;// needs to be mutable since writeHeader is const!
186 bool mInputHasGridOffsets;
189 bool mEnableInstancing;
191 uint32_t mCompression;
193 bool mEnableGridStats;
194 }; // class Archive
195
196 } // namespace io
197 } // namespace OPENVDB_VERSION_NAME
198 } // namespace openvdb
199
200 #endif // OPENVDB_IO_ARCHIVE_HAS_BEEN_INCLUDED
Compression.h
Grid.h
MetaMap.h
Platform.h
OPENVDB_API
#define OPENVDB_API
Helper macros for defining library symbol visibility.
Definition: Platform.h:240
openvdb::v8_1::GridBase
Abstract base class for typed grids.
Definition: Grid.h:78
openvdb::v8_1::GridBase::ConstPtr
SharedPtr< const GridBase > ConstPtr
Definition: Grid.h:81
openvdb::v8_1::GridBase::Ptr
SharedPtr< GridBase > Ptr
Definition: Grid.h:80
openvdb::v8_1::MetaMap
Container that maps names (strings) to values of arbitrary types.
Definition: MetaMap.h:20
openvdb::v8_1::io::Archive
Grid serializer/unserializer.
Definition: Archive.h:33
openvdb::v8_1::io::Archive::connectInstance
void connectInstance(const GridDescriptor &, const NamedGridMap &) const
If the grid represented by the given grid descriptor is an instance, connect it with its instance par...
openvdb::v8_1::io::Archive::setFormatVersion
void setFormatVersion(std::istream &)
Tag the given input stream with the input file format version number.
openvdb::v8_1::io::Archive::isGridStatsMetadataEnabled
bool isGridStatsMetadataEnabled() const
Return true if grid statistics (active voxel count and bounding box, etc.) are computed and written a...
Definition: Archive.h:87
openvdb::v8_1::io::Archive::setLibraryVersion
void setLibraryVersion(std::istream &)
Tag the given input stream with the version number of the library with which the input stream was cre...
openvdb::v8_1::io::Archive::readGrid
static void readGrid(GridBase::Ptr, const GridDescriptor &, std::istream &)
Populate the given grid from the input stream.
openvdb::v8_1::io::Archive::inputHasGridOffsets
bool inputHasGridOffsets() const
Return true if the input stream contains grid offsets that allow for random access or partial reading...
Definition: Archive.h:105
openvdb::v8_1::io::Archive::hasBloscCompression
static bool hasBloscCompression()
Return true if the OpenVDB library includes support for the Blosc compressor.
openvdb::v8_1::io::Archive::DEFAULT_COMPRESSION_FLAGS
static const uint32_t DEFAULT_COMPRESSION_FLAGS
Definition: Archive.h:38
openvdb::v8_1::io::Archive::setDataCompression
void setDataCompression(std::istream &)
Tag the given input stream with flags indicating whether the input stream contains compressed data an...
openvdb::v8_1::io::Archive::fileVersion
uint32_t fileVersion() const
Return the file format version number of the input stream.
Definition: Archive.h:55
openvdb::v8_1::io::Archive::operator=
Archive & operator=(const Archive &)=default
openvdb::v8_1::io::Archive::write
virtual void write(const GridCPtrVec &, const MetaMap &=MetaMap()) const
Write the grids in the given container to this archive's output stream.
Definition: Archive.h:93
openvdb::v8_1::io::Archive::readGrid
static void readGrid(GridBase::Ptr, const GridDescriptor &, std::istream &, const BBoxd &)
Populate the given grid from the input stream, but only where it intersects the given world-space bou...
openvdb::v8_1::io::Archive::getUniqueTag
std::string getUniqueTag() const
Return the UUID that was most recently written (or read, if no UUID has been written yet).
openvdb::v8_1::io::Archive::isDelayedLoadingEnabled
static bool isDelayedLoadingEnabled()
Return true if delayed loading is enabled.
openvdb::v8_1::io::Archive::setGridCompression
void setGridCompression(std::ostream &, const GridBase &) const
Tag an output stream with flags specifying only those compression options that are applicable to the ...
openvdb::v8_1::io::Archive::writeHeader
void writeHeader(std::ostream &, bool seekable) const
Write the magic number, version numbers, UUID, etc. to the given output stream.
openvdb::v8_1::io::Archive::readGridCount
static int32_t readGridCount(std::istream &)
Read in and return the number of grids on the input stream.
openvdb::v8_1::io::Archive::write
void write(std::ostream &, const GridCPtrVec &, bool seekable, const MetaMap &=MetaMap()) const
openvdb::v8_1::io::Archive::ConstPtr
SharedPtr< const Archive > ConstPtr
Definition: Archive.h:36
openvdb::v8_1::io::Archive::isInstancingEnabled
bool isInstancingEnabled() const
Return true if trees shared by multiple grids are written out only once, false if they are written ou...
Definition: Archive.h:65
openvdb::v8_1::io::Archive::readGrid
static void readGrid(GridBase::Ptr, const GridDescriptor &, std::istream &, const CoordBBox &)
Populate the given grid from the input stream, but only where it intersects the given index-space bou...
openvdb::v8_1::io::Archive::setInstancingEnabled
void setInstancingEnabled(bool b)
Specify whether trees shared by multiple grids should be written out only once (true) or once per gri...
Definition: Archive.h:69
openvdb::v8_1::io::Archive::readGridCompression
static void readGridCompression(std::istream &)
Read in the compression flags for a grid and tag the given input stream with those flags.
openvdb::v8_1::io::Archive::copy
virtual Ptr copy() const
Return a copy of this archive.
openvdb::v8_1::io::Archive::hasZLibCompression
static bool hasZLibCompression()
Return true if the OpenVDB library includes support for the ZLib compressor.
openvdb::v8_1::io::Archive::setCompression
void setCompression(uint32_t c)
Specify whether and how the data stream should be compressed.
Definition: Archive.h:83
openvdb::v8_1::io::Archive::Archive
Archive()
openvdb::v8_1::io::Archive::compression
uint32_t compression() const
Return a bit mask specifying compression options for the data stream.
Definition: Archive.h:78
openvdb::v8_1::io::Archive::NamedGridMap
std::map< Name, GridBase::Ptr > NamedGridMap
Definition: Archive.h:144
openvdb::v8_1::io::Archive::isIdentical
bool isIdentical(const std::string &uuidStr) const
Return true if the given UUID matches this archive's UUID.
openvdb::v8_1::io::Archive::writeGridInstance
void writeGridInstance(GridDescriptor &, GridBase::ConstPtr, std::ostream &, bool seekable) const
openvdb::v8_1::io::Archive::writeGrid
void writeGrid(GridDescriptor &, GridBase::ConstPtr, std::ostream &, bool seekable) const
openvdb::v8_1::io::Archive::readHeader
bool readHeader(std::istream &)
Read the magic number, version numbers, UUID, etc. from the given input stream.
openvdb::v8_1::io::Archive::Ptr
SharedPtr< Archive > Ptr
Definition: Archive.h:35
openvdb::v8_1::io::Archive::Archive
Archive(const Archive &)=default
openvdb::v8_1::io::Archive::setGridStatsMetadataEnabled
void setGridStatsMetadataEnabled(bool b)
Specify whether grid statistics (active voxel count and bounding box, etc.) should be computed and wr...
Definition: Archive.h:90
openvdb::v8_1::io::Archive::libraryVersion
VersionId libraryVersion() const
Return the (major, minor) version number of the library that was used to write the input stream.
Definition: Archive.h:58
openvdb::v8_1::io::Archive::~Archive
virtual ~Archive()
openvdb::v8_1::io::Archive::version
std::string version() const
Return a string of the form "<major>.<minor>/<format>", giving the library and file format version nu...
openvdb::v8_1::io::Archive::setInputHasGridOffsets
void setInputHasGridOffsets(bool b)
Definition: Archive.h:106
openvdb::v8_1::io::GridDescriptor
Definition: GridDescriptor.h:20
openvdb::v8_1::math::BBox< Vec3d >
openvdb::v8_1::math::CoordBBox
Axis-aligned bounding box of signed integer coordinates.
Definition: Coord.h:249
openvdb::v8_1::Name
std::string Name
Definition: Name.h:17
openvdb::v8_1::GridPtrVec
std::vector< GridBase::Ptr > GridPtrVec
Definition: Grid.h:514
openvdb::v8_1::SharedPtr
std::shared_ptr< T > SharedPtr
Definition: openvdb/Types.h:110
openvdb::v8_1::GridCPtrVec
std::vector< GridBase::ConstPtr > GridCPtrVec
Definition: Grid.h:519
openvdb
Definition: openvdb/Exceptions.h:13
openvdb::v8_1::VersionId
Definition: version.h.in:237
OPENVDB_VERSION_NAME
#define OPENVDB_VERSION_NAME
The version namespace name for this library version.
Definition: version.h.in:116
OPENVDB_USE_VERSION_NAMESPACE
#define OPENVDB_USE_VERSION_NAMESPACE
Definition: version.h.in:178