Compression.h File Reference

#include <openvdb/Types.h>
#include <openvdb/MetaMap.h>
#include <openvdb/math/Math.h>
#include <openvdb/util/Assert.h>
#include "io.h"
#include "DelayedLoadMetadata.h"
#include <algorithm>
#include <iostream>
#include <memory>
#include <string>
#include <vector>

Go to the source code of this file.

Classes
struct	MaskCompress< ValueT, MaskT >
struct	RealToHalf< T >
	RealToHalf and its specializations define a mapping from floating-point data types to analogous half float types. More...
struct	RealToHalf< float >
struct	RealToHalf< double >
struct	RealToHalf< Vec2s >
struct	RealToHalf< Vec2d >
struct	RealToHalf< Vec3s >
struct	RealToHalf< Vec3d >
struct	HalfReader< IsReal, T >
struct	HalfReader< false, T >
	Partial specialization for non-floating-point types (no half to float promotion) More...
struct	HalfReader< true, T >
	Partial specialization for floating-point types. More...
struct	HalfWriter< IsReal, T >
struct	HalfWriter< false, T >
	Partial specialization for non-floating-point types (no float to half quantization) More...
struct	HalfWriter< true, T >
	Partial specialization for floating-point types. More...

Namespaces
	openvdb
	openvdb::v12_0
	openvdb::v12_0::io

Enumerations
enum	{ COMPRESS_NONE = 0, COMPRESS_ZIP = 0x1, COMPRESS_ACTIVE_MASK = 0x2, COMPRESS_BLOSC = 0x4 }
	OR-able bit flags for compression options on input and output streams. More...
enum	{   NO_MASK_OR_INACTIVE_VALS, NO_MASK_AND_MINUS_BG, NO_MASK_AND_ONE_INACTIVE_VAL, MASK_AND_NO_INACTIVE_VALS,   MASK_AND_ONE_INACTIVE_VAL, MASK_AND_TWO_INACTIVE_VALS, NO_MASK_AND_ALL_VALS }

Functions
OPENVDB_API std::string	compressionToString (uint32_t flags)
	Return a string describing the given compression flags. More...
template<typename T >
T	truncateRealToHalf (const T &val)
	Return the given value truncated to 16-bit float precision. More...
OPENVDB_API size_t	zipToStreamSize (const char *data, size_t numBytes)
OPENVDB_API void	zipToStream (std::ostream &, const char *data, size_t numBytes)
OPENVDB_API void	unzipFromStream (std::istream &, char *data, size_t numBytes)
OPENVDB_API size_t	bloscToStreamSize (const char *data, size_t valSize, size_t numVals)
OPENVDB_API void	bloscToStream (std::ostream &, const char *data, size_t valSize, size_t numVals)
OPENVDB_API void	bloscFromStream (std::istream &, char *data, size_t numBytes)
template<typename T >
void	readData (std::istream &is, T *data, Index count, uint32_t compression, DelayedLoadMetadata *metadata=nullptr, size_t metadataOffset=size_t(0))
	Read data from a stream. More...
template<>
void	readData< std::string > (std::istream &is, std::string *data, Index count, uint32_t, DelayedLoadMetadata *, size_t)
	Specialization for std::string input. More...
template<typename T >
size_t	writeDataSize (const T *data, Index count, uint32_t compression)
template<>
size_t	writeDataSize< std::string > (const std::string *data, Index count, uint32_t)
	Specialization for std::string output. More...
template<typename T >
void	writeData (std::ostream &os, const T *data, Index count, uint32_t compression)
template<>
void	writeData< std::string > (std::ostream &os, const std::string *data, Index count, uint32_t)
	Specialization for std::string output. More...
template<typename ValueT , typename MaskT >
void	readCompressedValues (std::istream &is, ValueT *destBuf, Index destCount, const MaskT &valueMask, bool fromHalf)
template<typename ValueT , typename MaskT >
size_t	writeCompressedValuesSize (ValueT *srcBuf, Index srcCount, const MaskT &valueMask, uint8_t maskMetadata, bool toHalf, uint32_t compress)
template<typename ValueT , typename MaskT >
void	writeCompressedValues (std::ostream &os, ValueT *srcBuf, Index srcCount, const MaskT &valueMask, const MaskT &childMask, bool toHalf)