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IlvPPMStreamer Class Reference

Bitmap streamer class. More...

#include <ilviews/bitmaps/ppm.h>

Inheritance diagram for IlvPPMStreamer:
IlvBitmapStreamer IlvValueInterface

Public Member Functions

 IlvPPMStreamer ()
 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...
 
IlBoolean isBinary () const
 Gets whether the generated PPM stream is written in binary mode. More...
 
IlvBitmapDataread (ILVSTDPREF istream &stream)
 Reads a PPM image from a stream. More...
 
void setBinary (IlBoolean interlace)
 Sets whether the generated PPM stream is written in binary mode. More...
 
IlBoolean write (IlvBitmapData *data, ILVSTDPREF ostream &stream)
 Writes an IlvBitmapData to a PPM 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...
 
IlvQuantizergetQuantizer () const
 Returns the quantizer used by this streamer. More...
 
virtual IlvBitmapDataread (std::istream &stream)
 Reads from a stream. More...
 
virtual IlvBitmapInformationreadInfo (std::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 rpCallback, IlAny arg=0)
 Sets the callback for read progression. More...
 
virtual void setWriteProgressCallback (IlvProgressCallback wpCallback, IlAny arg=0)
 Sets the callback for write progression. More...
 
virtual IlBoolean write (IlvBitmapData *bitmapData, std::ostream &stream)
 Writes an IlvBitmapData to a stream. More...
 
- Public Member Functions inherited from IlvValueInterface
virtual IlBoolean applyValue (const IlvValue &value)
 Apply an accessor. More...
 
virtual IlBoolean changeValue (const IlvValue &val)
 Changes the value of an accessor. More...
 
virtual IlBoolean changeValues (const IlvValue *values, IlUShort count=0)
 Changes several accessor values simultaneously. More...
 
virtual void getAccessors (const IlSymbol *const **names, const IlvValueTypeClass *const **types, IlUInt &count) const
 Retrieves the list of available accessors of an object. More...
 
virtual IlvValuequeryValue (IlvValue &val) const
 Retrieves an accessor value. More...
 
virtual void queryValues (IlvValue *values, IlUShort count) const
 Retrieves multiple accessor values simultaneously. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from IlvBitmapStreamer
static IlvBitmapStreamerGet (const char *name)
 Returns a streamer from its name. More...
 
static IlvBitmapStreamer ** GetRegisteredStreamers (IlUInt &count)
 Returns the registered streamers. More...
 
static IlvBitmapRead (IlvDisplay *display, std::istream &stream, const IlUChar *signature, IlUInt signatureLen)
 Reads a bitmap using the registered streamers. More...
 
static IlvBitmapDataReadBitmapData (std::istream &stream, const IlUChar *signature, IlUInt signatureLen)
 Reads bitmap data using the registered streamers. More...
 
static IlvBitmapInformationReadInfo (std::istream &stream, const IlUChar *signature, IlUInt signatureLen)
 Reads bitmap information using the registered streamers. More...
 
static void Register (IlvBitmapStreamer *streamer)
 Registers the given streamer. More...
 
static IlBoolean UnRegister (IlvBitmapStreamer *streamer)
 Unregisters the given streamer. More...
 

Detailed Description

Bitmap streamer class.

Library: ilvppm

This streamer provides methods to deal with a stream containing a PPM image.
This streamer can read and write.
When reading or writing, callbacks will be called at each scanline. The data is written in binary mode.

Member Function Documentation

◆ canRead()

IlBoolean IlvPPMStreamer::canRead ( ) const
virtual

Indicates that the instance can read from a stream.

Returns
Always IlTrue.

Reimplemented from IlvBitmapStreamer.

◆ canWrite()

IlBoolean IlvPPMStreamer::canWrite ( ) const
virtual

Indicates that the instance can write to a stream.

Returns
Always IlTrue.

Reimplemented from IlvBitmapStreamer.

◆ checkSignature()

IlBoolean IlvPPMStreamer::checkSignature ( const IlUChar data,
IlUInt  size 
)
virtual

Checks the signature of the input stream.

Parameters
dataThe data containing the signature of the stream.
sizeThe size of the data containing the signature.
Returns
IlTrue if the data contains a PPM signature.

Implements IlvBitmapStreamer.

◆ isBinary()

IlBoolean IlvPPMStreamer::isBinary ( ) const

Gets whether the generated PPM stream is written in binary mode.

Returns
IlTrue if the generated PPM stream is binary.

◆ read()

IlvBitmapData* IlvPPMStreamer::read ( ILVSTDPREF istream &  stream)

Reads a PPM image from a stream.

Parameters
streamThe stream to read from.
Returns
An instance of IlvBitmapData.

◆ setBinary()

void IlvPPMStreamer::setBinary ( IlBoolean  interlace)

Sets whether the generated PPM stream is written in binary mode.

Parameters
interlaceIlTrue if the stream is in binary mode.

◆ write()

IlBoolean IlvPPMStreamer::write ( IlvBitmapData data,
ILVSTDPREF ostream &  stream 
)

Writes an IlvBitmapData to a PPM stream.

Parameters
dataThe bitmap data to write.
streamThe stream to write to.
Returns
IlTrue if the bitmap data has been written.