PNMFileTypeRegistry Class Reference

This class maintains the set of all known PNMFileTypes in the universe. More...

List of all members.

Public Member Functions
int	getNumTypes ()
	Returns the total number of types registered.
PNMFileType	getType (int n)
	Returns the nth type registered.
PNMFileType	getTypeByHandle (TypeHandle handle)
	Returns the PNMFileType instance stored in the registry for the given TypeHandle, e.g.
PNMFileType	getTypeFromExtension (string filename)
	Tries to determine what the PNMFileType is likely to be for a particular image file based on its extension.
PNMFileType	getTypeFromMagicNumber (string magic_number)
	Tries to determine what the PNMFileType is likely to be for a particular image file based on its magic number, the first two bytes read from the file.
list	getTypes ()
	write (ostream out, int indent_level)
	Writes a list of supported image file types to the indicated output stream, one per line.
	write (ostream out)
	Writes a list of supported image file types to the indicated output stream, one per line.
Static Public Member Functions
static PNMFileTypeRegistry	getGlobalPtr ()
	Returns a pointer to the global PNMFileTypeRegistry object.

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Detailed Description

This class maintains the set of all known PNMFileTypes in the universe.

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Member Function Documentation

static PNMFileTypeRegistry getGlobalPtr

(

)

[static]

Returns a pointer to the global PNMFileTypeRegistry object.

int getNumTypes

(

)

Returns the total number of types registered.

PNMFileType getType

(

int

n

)

Returns the nth type registered.

PNMFileType getTypeByHandle

(

TypeHandle

handle

)

Returns the PNMFileType instance stored in the registry for the given TypeHandle, e.g.

as retrieved by a previous call to get_type() on the type instance.

PNMFileType getTypeFromExtension

(

string

filename

)

Tries to determine what the PNMFileType is likely to be for a particular image file based on its extension.

Returns a suitable PNMFileType pointer, or NULL if no type can be determined.

PNMFileType getTypeFromMagicNumber

(

string

magic_number

)

Tries to determine what the PNMFileType is likely to be for a particular image file based on its magic number, the first two bytes read from the file.

Returns a suitable PNMFileType pointer, or NULL if no type can be determined.

list getTypes

(

)

write	(	ostream	out,
		int	indent_level
	)

Writes a list of supported image file types to the indicated output stream, one per line.

write

(

ostream

out

)

Writes a list of supported image file types to the indicated output stream, one per line.