PLDataSource Class Reference

#include <pldatasrc.h>

Inheritance diagram for PLDataSource:

List of all members.

Public Member Functions
	PLDataSource (PLIProgressNotification *pNotification=NULL)
virtual void	Open (const char *pszName, int FileSize)
virtual void	Close ()
char *	GetName ()
virtual PLBYTE *	GetBufferPtr (int MinBytesInBuffer)=0
	Read but don't advance file pointer.
virtual PLBYTE *	ReadNBytes (int n)
	This needs to be overridden in derived classes.
int	GetFileSize ()
virtual PLBYTE *	ReadEverything ()=0
PLBYTE *	Read1Byte ()
PLBYTE *	Read2Bytes ()
PLBYTE *	Read4Bytes ()
void	OProgressNotification (double part)
	handles progress notification from other libs
void	AlignToWord ()
void	Skip (int n)
void	CheckEOF ()
	Test to see if we didn't go past the end of the file.

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Detailed Description

This is a base class for a source of picture data. It defines methods to open, close, and read from data sources. Does byte-order-conversions in the ReadByte, ReadWord, and ReadLong routines.

Definition at line 27 of file pldatasrc.h.

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Constructor & Destructor Documentation

PLDataSource::PLDataSource (  PLIProgressNotification *  pNotification = NULL  )

Constructs a new data source. pNotification points to an object that reacts to progress notification messages.

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Member Function Documentation

virtual PLBYTE* PLDataSource::ReadEverything (   )  [pure virtual]

This is a legacy routine that interferes with progress notifications. Don't call it! Implemented in PLFileSource, PLMemSource, and PLResourceSource.

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The documentation for this class was generated from the following file:

• pldatasrc.h

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