dataSource.h File Reference

#include "pxr/pxr.h"
#include "pxr/imaging/hd/api.h"
#include "pxr/imaging/hd/dataSourceLocator.h"
#include "pxr/base/tf/token.h"
#include "pxr/base/vt/value.h"
#include <iosfwd>
#include <memory>
#include <vector>
#include <atomic>

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Classes
class	HdDataSourceBase
class	HdContainerDataSource
class	HdVectorDataSource
class	HdSampledDataSource
class	HdTypedSampledDataSource< T >
class	HdBlockDataSource

Macros
#define	HD_DECLARE_DATASOURCE_ABSTRACT(type)
#define	HD_DECLARE_DATASOURCE(type)
#define	HD_DECLARE_DATASOURCE_INITIALIZER_LIST_NEW(type, T)
#define	HD_DECLARE_DATASOURCE_HANDLES(type)

Functions
	HD_DECLARE_DATASOURCE_HANDLES (HdDataSourceBase)
	HD_DECLARE_DATASOURCE_HANDLES (HdContainerDataSource)
	HD_DECLARE_DATASOURCE_HANDLES (HdVectorDataSource)
	HD_DECLARE_DATASOURCE_HANDLES (HdSampledDataSource)
	HD_DECLARE_DATASOURCE_HANDLES (HdBlockDataSource)
HD_API bool	HdGetMergedContributingSampleTimesForInterval (size_t count, const HdSampledDataSourceHandle *inputDataSources, HdSampledDataSource::Time startTime, HdSampledDataSource::Time endTime, std::vector< HdSampledDataSource::Time > *outSampleTimes)
	Merges contributing sample times from several data sources. More...
HD_API void	HdDebugPrintDataSource (std::ostream &, HdDataSourceBaseHandle, int indentLevel=0)
	Print a datasource to a stream, for debugging/testing. More...
HD_API void	HdDebugPrintDataSource (HdDataSourceBaseHandle, int indentLevel=0)
	Print a datasource to stdout, for debugging/testing. More...

Macro Definition Documentation

#define HD_DECLARE_DATASOURCE

(

type

)

Value:

HD_DECLARE_DATASOURCE_ABSTRACT(type) \
    template <typename ... Args> \
    static Handle New(Args&& ... args) { \
        return Handle(new type(std::forward<Args>(args) ... )); \
    }

HD_DECLARE_DATASOURCE Used for instantiable classes, this defines functions for manipulating and allocating handles to this type of datasource.

Use of this macro in derived classes is important to make sure that core and client code share the same handle type and allocator.

Definition at line 52 of file dataSource.h.

#define HD_DECLARE_DATASOURCE_ABSTRACT

(

type

)

Value:

using Handle =  std::shared_ptr<type>; \
    using AtomicHandle = Handle; \
    static Handle AtomicLoad(AtomicHandle &ptr) { \
        return std::atomic_load(&ptr); \
    } \
    static void AtomicStore(AtomicHandle &ptr, const Handle &v) { \
        std::atomic_store(&ptr, v); \
    } \
    static bool AtomicCompareExchange(AtomicHandle &ptr, \
                                      AtomicHandle &expected, \
                                      const Handle &desired) { \
        return std::atomic_compare_exchange_strong(&ptr, &expected, desired); \
    } \
    static Handle Cast(const HdDataSourceBase::Handle &v) { \
        return std::dynamic_pointer_cast<type>(v); \
    }

HD_DECLARE_DATASOURCE_ABSTRACT Used for non-instantiable classes, this defines a set of functions for manipulating handles to this type of datasource.

Definition at line 28 of file dataSource.h.

#define HD_DECLARE_DATASOURCE_HANDLES

(

type

)

Value:

using type##Handle = type::Handle; \
    using type##AtomicHandle = type::AtomicHandle;

Definition at line 67 of file dataSource.h.

#define HD_DECLARE_DATASOURCE_INITIALIZER_LIST_NEW	(		type,
			T
	)

Value:

static Handle New(std::initializer_list<T> initList) { \
        return Handle(new type(initList)); \
    }

HD_DECLARE_DATASOURCE_INITIALIZER_LIST_NEW Used for declaring a New function for datasource types that have a constructor that takes an initializer_list<T>.

Definition at line 62 of file dataSource.h.

Function Documentation

HD_DECLARE_DATASOURCE_HANDLES

(

HdDataSourceBase

)

HD_DECLARE_DATASOURCE_HANDLES

(

HdContainerDataSource

)

HD_DECLARE_DATASOURCE_HANDLES

(

HdVectorDataSource

)

HD_DECLARE_DATASOURCE_HANDLES

(

HdSampledDataSource

)

HD_DECLARE_DATASOURCE_HANDLES

(

HdBlockDataSource

)

HD_API void HdDebugPrintDataSource	(	std::ostream &	,
		HdDataSourceBaseHandle	,
		int	indentLevel = 0
	)

Print a datasource to a stream, for debugging/testing.

HD_API void HdDebugPrintDataSource	(	HdDataSourceBaseHandle	,
		int	indentLevel = 0
	)

Print a datasource to stdout, for debugging/testing.

HD_API bool HdGetMergedContributingSampleTimesForInterval	(	size_t	count,
		const HdSampledDataSourceHandle *	inputDataSources,
		HdSampledDataSource::Time	startTime,
		HdSampledDataSource::Time	endTime,
		std::vector< HdSampledDataSource::Time > *	outSampleTimes
	)

Merges contributing sample times from several data sources.