IlvRGBStreamer Class Reference

Bitmap streamer class. More...

#include <ilviews/bitmaps/rgb.h>

Inheritance diagram for IlvRGBStreamer:

Public Member Functions
	IlvRGBStreamer ()
	Constructor.
IlBoolean	canRead () const
	Indicates that the instance can read from a stream. More...
IlBoolean	canWrite () const
	Indicates that the instance can write to a stream. More...
IlBoolean	checkSignature (const IlUChar *data, IlUInt size)
	Checks the signature of the input stream. More...
IlUInt	getAlphaLevel () const
	Gets the alpha level of the RGB streamer. More...
IlvBitmapData *	read (IL_STDPREF istream &stream)
	Reads an RGB image from a stream. More...
void	setAlphaLevel (IlUInt level)
	Sets the alpha level for the RGB stream. More...
IlBoolean	write (IlvBitmapData *data, IL_STDPREF ostream &stream)
	Writes an IlvBitmapData to a stream. More...
Public Member Functions inherited from IlvBitmapStreamer
virtual void	callReadProgressCallback (IlUInt current, IlUInt max)
	Calls the callback for read progression. More...
virtual void	callWriteProgressCallback (IlUInt current, IlUInt max)
	Calls the callback for write progression. More...
virtual const char *	getName () const
	Returns the internal name of the streamer. More...
IlvQuantizer *	getQuantizer () const
	Returns the quantizer used by this streamer. More...
virtual IlvBitmapInformation *	readInfo (IL_STDPREF istream &stream)
	Reads information from a stream. More...
void	setQuantizer (IlvQuantizer *quantizer)
	Sets the quantizer used (if needed) by this streamer. More...
virtual void	setReadProgressCallback (IlvProgressCallback rCallback, IlAny arg=0)
	Sets the callback for read progression. More...
virtual void	setWriteProgressCallback (IlvProgressCallback wCallback, IlAny arg=0)
	Sets the callback for write progression. More...
virtual	~IlvBitmapStreamer ()
	Reads a bitmap using the registered streamers. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvBitmapStreamer
static void	Register (IlvBitmapStreamer *streamer)
	Registers the given streamer. More...
static IlBoolean	UnRegister (IlvBitmapStreamer *streamer)
	Unregisters the given streamer. More...
static IlvBitmapStreamer *	Get (const char *name)
	Reads a bitmap using the registered streamers. More...
static IlvBitmap *	Read (IlvDisplay *display, IL_STDPREF istream &stream, const IlUChar *signature, IlUInt signatureLen)
	Reads a bitmap using the registered streamers. More...
static IlvBitmapData *	ReadBitmapData (IL_STDPREF istream &stream, const IlUChar *signature, IlUInt signatureLen)
	Reads bitmap data using the registered streamers. More...
static IlvBitmapInformation *	ReadInfo (IL_STDPREF istream &stream, const IlUChar *signature, IlUInt signatureLen)
	Reads bitmap information using the registered streamers. More...
static IlvBitmapStreamer **	GetRegisteredStreamers (IlUInt &count)
	Returns the registered streamers. More...
static IlBoolean	CheckInModules (const IlUChar *sigbuffer, const IlUChar *filename=0)
	Reads a bitmap using the registered streamers. More...
static	IlListOf (IlvBitmapStreamers)*_Streamers
	Reads a bitmap using the registered streamers. More...
Protected Member Functions inherited from IlvBitmapStreamer
	IlvBitmapStreamer ()
	Reads a bitmap using the registered streamers. More...
Protected Attributes inherited from IlvBitmapStreamer
IlvProgressCallback	_readProgressCallback
	Reads a bitmap using the registered streamers. More...
IlAny	_argr
	Reads a bitmap using the registered streamers. More...
IlvProgressCallback	_writeProgressCallback
	Reads a bitmap using the registered streamers. More...
IlAny	_argw
	Reads a bitmap using the registered streamers. More...
IlvQuantizer *	_quantizer
	Reads a bitmap using the registered streamers. More...

Detailed Description

Bitmap streamer class.

Library: display

This streamer provides methods to deal with a stream containing an RGB image. It supports reading from all RGB streams. This streamer can only read.
When reading images, callbacks will be called at each scanline.

Member Function Documentation

IlBoolean IlvRGBStreamer::canRead ( ) const

virtual

Indicates that the instance can read from a stream.

Returns

IlTrue.

Reimplemented from IlvBitmapStreamer.

IlBoolean IlvRGBStreamer::canWrite ( ) const

virtual

Indicates that the instance can write to a stream.

Returns

IlTrue.

Reimplemented from IlvBitmapStreamer.

IlBoolean IlvRGBStreamer::checkSignature ( const IlUChar *  data, IlUInt  size  )

virtual

Checks the signature of the input stream.

Parameters

data	The data containing the signature of the stream.
size	The size of the data containing the signature.

Returns

IlTrue if the data contains an RGB signature.

Implements IlvBitmapStreamer.

IlUInt IlvRGBStreamer::getAlphaLevel

(

)

const

Gets the alpha level of the RGB streamer.

Returns

The alpha level.

IlvBitmapData* IlvRGBStreamer::read ( IL_STDPREF istream &  stream )

virtual

Reads an RGB image from a stream.

Parameters

stream

The stream to read from.

Returns

An instance of IlvBitmapData.

Reimplemented from IlvBitmapStreamer.

void IlvRGBStreamer::setAlphaLevel

(

IlUInt

level

)

Sets the alpha level for the RGB stream.

Alpha levels greater than the given argument are converted to a fully opaque value while alpha levels smaller than the given argument are converted to a fully transparent value.

Parameters

level

The alpha level.

IlBoolean IlvRGBStreamer::write ( IlvBitmapData *  bitmapData, IL_STDPREF ostream &  stream  )

virtual

Writes an IlvBitmapData to a stream.

Parameters

bitmapData	The bitmap data to write.
stream	The stream to write to.

Returns

IlTrue if the bitmap data has been written.

Reimplemented from IlvBitmapStreamer.