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Ogre::Codec Class Reference

Abstract class that defines a 'codec'. More...

#include <OgreCodec.h>

Inheritance diagram for Ogre::Codec:

Ogre::ImageCodec Ogre::EXRCodec Ogre::ILImageCodec List of all members.

Public Types

typedef SharedPtr< CodecData > CodecDataPtr
typedef std::pair< MemoryDataStreamPtr,
CodecDataPtr > 		DecodeResult
 Result of a decoding; both a decoded data stream and CodecData metadata.


Public Member Functions

virtual ~Codec ()
virtual DataStreamPtr code (MemoryDataStreamPtr &input, CodecDataPtr &pData) const=0
 Codes the data in the input stream and saves the result in the output stream.

virtual void codeToFile (MemoryDataStreamPtr &input, const String &outFileName, CodecDataPtr &pData) const=0
 Codes the data in the input chunk and saves the result in the output filename provided.

virtual DecodeResult decode (DataStreamPtr &input) const=0
 Codes the data from the input chunk into the output chunk.

virtual String getType () const=0
 Returns the type of the codec as a String.


Static Public Member Functions

void registerCodec (Codec *pCodec)
 Registers a new codec in the database.

void unRegisterCodec (Codec *pCodec)
 Unregisters a codec from the database.

Codec * getCodec (const String &extension)
 Gets the codec registered for the passed in file extension.


Protected Types

typedef std::map< String,
Codec * > 		CodecList

Static Protected Attributes

CodecList ms_mapCodecs
 A map that contains all the registered codecs.

Detailed Description

Abstract class that defines a 'codec'.

Remarks:
A codec class works like a two-way filter for data - data entered on one end (the decode end) gets processed and transformed into easily usable data while data passed the other way around codes it back.
The codec concept is a pretty generic one - you can easily understand how it can be used for images, sounds, archives, even compressed data.

Definition at line 43 of file OgreCodec.h.

Member Typedef Documentation

typedef SharedPtr<CodecData> Ogre::Codec::CodecDataPtr
 

Definition at line 61 of file OgreCodec.h.

typedef std::map< String, Codec* > Ogre::Codec::CodecList [protected]
 

Definition at line 46 of file OgreCodec.h.

typedef std::pair<MemoryDataStreamPtr, CodecDataPtr> Ogre::Codec::DecodeResult
 

Result of a decoding; both a decoded data stream and CodecData metadata.

Definition at line 97 of file OgreCodec.h.

Constructor & Destructor Documentation

virtual Ogre::Codec::~Codec (   )  [virtual]
 

Member Function Documentation

virtual DataStreamPtr Ogre::Codec::code (  MemoryDataStreamPtr &  input,
CodecDataPtr &  pData
)  const [pure virtual]
 

Codes the data in the input stream and saves the result in the output stream.

Implemented in Ogre::ILImageCodec, and Ogre::EXRCodec.

virtual void Ogre::Codec::codeToFile (  MemoryDataStreamPtr &  input,
const String &  outFileName,
CodecDataPtr &  pData
)  const [pure virtual]
 

Codes the data in the input chunk and saves the result in the output filename provided.

Provided for efficiency since coding to memory is progressive therefore memory required is unknown leading to reallocations.

Parameters:
input The input data
outFileName The filename to write to
pData Extra information to be passed to the codec (codec type specific)

Implemented in Ogre::ILImageCodec, and Ogre::EXRCodec.

virtual DecodeResult Ogre::Codec::decode (  DataStreamPtr &  input  )  const [pure virtual]
 

Codes the data from the input chunk into the output chunk.

Parameters:
input Stream containing the encoded data
Note:
Has a variable number of arguments, which depend on the codec type.

Implemented in Ogre::ILImageCodec, and Ogre::EXRCodec.

Codec* Ogre::Codec::getCodec (  const String &  extension  )  [static]
 

Gets the codec registered for the passed in file extension.

virtual String Ogre::Codec::getType (   )  const [pure virtual]
 

Returns the type of the codec as a String.

Implemented in Ogre::ILImageCodec, and Ogre::EXRCodec.

Referenced by registerCodec(), and unRegisterCodec().

void Ogre::Codec::registerCodec (  Codec *  pCodec  )  [static]
 

Registers a new codec in the database.

Definition at line 68 of file OgreCodec.h.

References getType().

void Ogre::Codec::unRegisterCodec (  Codec *  pCodec  )  [static]
 

Unregisters a codec from the database.

Definition at line 75 of file OgreCodec.h.

References getType().

Member Data Documentation

CodecList Ogre::Codec::ms_mapCodecs [static, protected]
 

A map that contains all the registered codecs.

Definition at line 49 of file OgreCodec.h.

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

Copyright © 2000-2005 by The OGRE Team
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sun Feb 12 13:00:16 2006