BitmapIOMetaData Class Reference

#include <bitmap.h>

Class Description

Extends BitmapIO with additional information for automatic gamma correction etc.

See also

Class BitmapIO

Description:

This class exposes extended parameters for the BitmapIO class that relates to things like gamma correction preferences. It is returned as an extended interface of BitmapIO, returned by calling GetInterface(BITMAPIOMETADATA_INTERFACE_ID) on it.

If this interface is exposed, it can make a decision whether that BitmapIO implementation would prefer to save or load data linearly. It is called by the code in BitmapManager::Load() when loading and Bitmap::OpenOutput() when saving.

Any BitmapIO that does not expose this interface is simply assumed to use the default gamma value when reading and writing the files (the sRGB gamma of 2.2), very similar to how things worked in older 3ds Max versions.

Inheritance diagram for BitmapIOMetaData:

Public Member Functions
virtual bool	UseLinearStorage (bool save)=0
	Does this BitmapIO prefer linear data or not? More...
Public Member Functions inherited from BaseInterface
virtual UtilExport	~BaseInterface ()
	Destructor. More...
UtilExport BaseInterface *	GetInterface (Interface_ID id)
virtual UtilExport Interface_ID	GetID ()
virtual LifetimeType	LifetimeControl ()
virtual bool	RegisterNotifyCallback (InterfaceNotifyCallback *incb)
virtual void	UnRegisterNotifyCallback (InterfaceNotifyCallback *incb)
virtual BaseInterface *	AcquireInterface ()
virtual void	ReleaseInterface ()
virtual void	DeleteInterface ()
virtual BaseInterface *	CloneInterface (void *remapDir=NULL)
Public Member Functions inherited from InterfaceServer
virtual UtilExport	~InterfaceServer ()
	Destructor. More...

Additional Inherited Members
Public Types inherited from BaseInterface
enum	LifetimeType { noRelease, immediateRelease, wantsRelease, serverControlled }
Static Public Member Functions inherited from MaxHeapOperators
static UtilExport void *	operator new (size_t size)
	Standard new operator used to allocate objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, const std::nothrow_t &e)
	Standard new operator used to allocate objects if there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new (size_t size, const char *filename, int line)
	New operator used to allocate objects that takes the filename and line number where the new was called If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, int block_type, const char *filename, int line)
	New operator used to allocate objects that takes the type of memory, filename and line number where the new was called If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, const std::nothrow_t &e, const char *filename, int line)
	New operator used to allocate objects that takes the filename and line number where the new was called If there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new (size_t size, unsigned long flags)
	New operator used to allocate objects that takes extra flags to specify special operations If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, const std::nothrow_t &e, unsigned long flags)
	New operator used to allocate objects that takes extra flags to specify special operations If there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new[] (size_t size)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e)
	New operator used to allocate arrays of objects If there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new[] (size_t size, const char *filename, int line)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new[] (size_t size, int block_type, const char *filename, int line)
	New operator used to allocate arrays of objects. More...
static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e, const char *filename, int line)
	New operator used to allocate arrays of objects If there is insufficient memory, NULL will be returned. More...
static UtilExport void *	operator new[] (size_t size, unsigned long flags)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...
static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e, unsigned long flags)
	New operator used to allocate arrays of objects If there is insufficient memory, NULL will be returned. More...
static UtilExport void	operator delete (void *ptr)
	Standard delete operator used to deallocate an object If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete (void *ptr, const std::nothrow_t &e)
	Standard delete operator used to deallocate an object If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete (void *ptr, const char *filename, int line)
	Delete operator used to deallocate an object that takes the filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete (void *ptr, int block_type, const char *filename, int line)
	Delete operator used to deallocate an object that takes the type of memory, filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete (void *ptr, const std::nothrow_t &e, const char *filename, int line)
	Delete operator used to deallocate an object that takes the filename and line number where the delete was called If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete (void *ptr, unsigned long flags)
	Delete operator used to deallocate an object that takes extra flags to specify special operations If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete (void *ptr, const std::nothrow_t &e, unsigned long flags)
	Delete operator used to deallocate an object that takes extra flags to specify special operations If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete[] (void *ptr)
	Standard delete operator used to deallocate an array of objects If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, const std::nothrow_t &e)
	Standard delete operator used to deallocate an array of objects If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete[] (void *ptr, const char *filename, int line)
	Delete operator used to deallocate an array of objects that takes the filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, int block_type, const char *filename, int line)
	Delete operator used to deallocate an array of objects that takes the type of memory, filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, const std::nothrow_t &e, const char *filename, int line)
	Delete operator used to deallocate an array of objects that takes the filename and line number where the delete was called If the pointer is invalid, nothing will happen. More...
static UtilExport void	operator delete[] (void *ptr, unsigned long flags)
	Delete operator used to deallocate an array of objects that takes extra flags to specify special operations If the pointer is invalid, an exception will be thrown. More...
static UtilExport void	operator delete[] (void *ptr, const std::nothrow_t &e, unsigned long flags)
	Delete operator used to deallocate an array of objects that takes extra flags to specify special operations If the pointer is invalid, an exception will be thrown. More...
static UtilExport void *	operator new (size_t size, void *placement_ptr)
	Placement new operator. More...
static UtilExport void	operator delete (void *ptr, void *placement_ptr)
	Placement delete operator. More...

Member Function Documentation

virtual bool UseLinearStorage ( bool  save )

pure virtual

Does this BitmapIO prefer linear data or not?

Parameters

save	is true if we are saving, false for loading.

Returns

true if we prefer linear storage, false if we want to use the the default - generally sRGB - gamma.

Usage:

If this BitmapIO always wants to work with linear data, this function can just blindly return true. If, however, it can support both float formats and non-float formats depending on settings (like, for example, the DDS or RPF plugins), it needs to be able to make decisions on what to return.

To do this properly, one needs to understand the calling sequence; this function is called in two cases:

• From BitmapManager::Load() (with save set to false). Since this is called after loading, it is legal to make decisions based on the BitmapIO::bi member, for example examining BitmapIO::bi.Type().
• From Bitmap::OpenOutput() (with save set to true). Decisions need to be made based on the configuration of the bitmap plugin, since this is called before saving, the BitmapIO::bi member is in this case not valid.

An example of this is available in /MAXSDK/SAMPLES/IMAGES/RLA/RLA.CPP.