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Object-Oriented Graphics Rendering Engine
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Ogre::Codec Class Referenceabstract

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

#include <OgreCodec.h>

+ Inheritance diagram for Ogre::Codec:
+ Collaboration diagram for Ogre::Codec:

Classes

class  CodecData
 

Public Types

typedef SharedPtr< CodecDataCodecDataPtr
 
typedef ConstMapIterator
< CodecList
CodecIterator
 
typedef std::pair
< MemoryDataStreamPtr,
CodecDataPtr
DecodeResult
 Result of a decoding; both a decoded data stream and CodecData metadata. More...
 

Public Member Functions

virtual ~Codec ()
 
virtual DecodeResult decode (DataStreamPtr &input) const =0
 Codes the data from the input chunk into the output chunk. More...
 
virtual DataStreamPtr encode (MemoryDataStreamPtr &input, CodecDataPtr &pData) const =0
 Codes the data in the input stream and saves the result in the output stream. More...
 
virtual void encodeToFile (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. More...
 
virtual String getDataType () const =0
 Returns the type of the data that supported by this codec as a String. More...
 
virtual String getType () const =0
 Returns the type of the codec as a String. More...
 
virtual bool magicNumberMatch (const char *magicNumberPtr, size_t maxbytes) const
 Returns whether a magic number header matches this codec. More...
 
virtual String magicNumberToFileExt (const char *magicNumberPtr, size_t maxbytes) const =0
 Maps a magic number header to a file extension, if this codec recognises it. More...
 
void operator delete (void *ptr)
 
void operator delete (void *ptr, void *)
 
void operator delete (void *ptr, const char *, int, const char *)
 
void operator delete[] (void *ptr)
 
void operator delete[] (void *ptr, const char *, int, const char *)
 
void * operator new (size_t sz, const char *file, int line, const char *func)
 operator new, with debug line info More...
 
void * operator new (size_t sz)
 
void * operator new (size_t sz, void *ptr)
 placement operator new More...
 
void * operator new[] (size_t sz, const char *file, int line, const char *func)
 array operator new, with debug line info More...
 
void * operator new[] (size_t sz)
 

Static Public Member Functions

static CodecgetCodec (const String &extension)
 Gets the codec registered for the passed in file extension. More...
 
static CodecgetCodec (char *magicNumberPtr, size_t maxbytes)
 Gets the codec that can handle the given 'magic' identifier. More...
 
static CodecIterator getCodecIterator (void)
 Gets the iterator for the registered codecs. More...
 
static StringVector getExtensions (void)
 Gets the file extension list for the registered codecs. More...
 
static bool isCodecRegistered (const String &codecType)
 Return whether a codec is registered already. More...
 
static void registerCodec (Codec *pCodec)
 Registers a new codec in the database. More...
 
static void unregisterCodec (Codec *pCodec)
 Unregisters a codec from the database. More...
 

Protected Types

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

Static Protected Attributes

static CodecList msMapCodecs
 A map that contains all the registered codecs. More...
 

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 54 of file OgreCodec.h.

Member Typedef Documentation

Definition at line 72 of file OgreCodec.h.

Definition at line 74 of file OgreCodec.h.

typedef map< String, Codec* >::type Ogre::Codec::CodecList
protected

Definition at line 57 of file OgreCodec.h.

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

Definition at line 139 of file OgreCodec.h.

Constructor & Destructor Documentation

virtual Ogre::Codec::~Codec ( )
virtual

Member Function Documentation

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

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

Parameters
inputStream containing the encoded data

Implemented in Ogre::DDSCodec, Ogre::FreeImageCodec, Ogre::ETCCodec, Ogre::PVRTCCodec, and Ogre::EXRCodec.

virtual DataStreamPtr Ogre::Codec::encode ( 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::DDSCodec, Ogre::FreeImageCodec, Ogre::ETCCodec, and Ogre::PVRTCCodec.

virtual void Ogre::Codec::encodeToFile ( 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
inputThe input data
outFileNameThe filename to write to
pDataExtra information to be passed to the codec (codec type specific)

Implemented in Ogre::DDSCodec, Ogre::FreeImageCodec, Ogre::ETCCodec, and Ogre::PVRTCCodec.

static Codec* Ogre::Codec::getCodec ( const String extension)
static

Gets the codec registered for the passed in file extension.

static Codec* Ogre::Codec::getCodec ( char *  magicNumberPtr,
size_t  maxbytes 
)
static

Gets the codec that can handle the given 'magic' identifier.

Parameters
magicNumberPtrPointer to a stream of bytes which should identify the file. Note that this may be more than needed - each codec may be looking for a different size magic number.
maxbytesThe number of bytes passed
static CodecIterator Ogre::Codec::getCodecIterator ( void  )
inlinestatic

Gets the iterator for the registered codecs.

Definition at line 106 of file OgreCodec.h.

virtual String Ogre::Codec::getDataType ( ) const
pure virtual

Returns the type of the data that supported by this codec as a String.

Implemented in Ogre::ImageCodec.

static StringVector Ogre::Codec::getExtensions ( void  )
static

Gets the file extension list for the registered codecs.

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

Returns the type of the codec as a String.

Implemented in Ogre::DDSCodec, Ogre::FreeImageCodec, Ogre::ETCCodec, Ogre::PVRTCCodec, and Ogre::EXRCodec.

Referenced by registerCodec(), and unregisterCodec().

static bool Ogre::Codec::isCodecRegistered ( const String codecType)
inlinestatic

Return whether a codec is registered already.

Definition at line 93 of file OgreCodec.h.

virtual bool Ogre::Codec::magicNumberMatch ( const char *  magicNumberPtr,
size_t  maxbytes 
) const
inlinevirtual

Returns whether a magic number header matches this codec.

Parameters
magicNumberPtrPointer to a stream of bytes which should identify the file. Note that this may be more than needed - each codec may be looking for a different size magic number.
maxbytesThe number of bytes passed

Definition at line 159 of file OgreCodec.h.

virtual String Ogre::Codec::magicNumberToFileExt ( const char *  magicNumberPtr,
size_t  maxbytes 
) const
pure virtual

Maps a magic number header to a file extension, if this codec recognises it.

Parameters
magicNumberPtrPointer to a stream of bytes which should identify the file. Note that this may be more than needed - each codec may be looking for a different size magic number.
maxbytesThe number of bytes passed
Returns
A blank string if the magic number was unknown, or a file extension.

Implemented in Ogre::DDSCodec, Ogre::FreeImageCodec, Ogre::ETCCodec, Ogre::PVRTCCodec, and Ogre::EXRCodec.

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete ( void *  ptr)
inlineinherited

Definition at line 96 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete ( void *  ptr,
void *   
)
inlineinherited

Definition at line 102 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete ( void *  ptr,
const char *  ,
int  ,
const char *   
)
inlineinherited

Definition at line 108 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete[] ( void *  ptr)
inlineinherited

Definition at line 113 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete[] ( void *  ptr,
const char *  ,
int  ,
const char *   
)
inlineinherited

Definition at line 119 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new ( size_t  sz,
const char *  file,
int  line,
const char *  func 
)
inlineinherited

operator new, with debug line info

Definition at line 68 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new ( size_t  sz)
inlineinherited

Definition at line 73 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new ( size_t  sz,
void *  ptr 
)
inlineinherited

placement operator new

Definition at line 79 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new[] ( size_t  sz,
const char *  file,
int  line,
const char *  func 
)
inlineinherited

array operator new, with debug line info

Definition at line 86 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new[] ( size_t  sz)
inlineinherited

Definition at line 91 of file OgreMemoryAllocatedObject.h.

static void Ogre::Codec::registerCodec ( Codec pCodec)
inlinestatic

Registers a new codec in the database.

Definition at line 81 of file OgreCodec.h.

References Ogre::Exception::ERR_DUPLICATE_ITEM, getType(), and OGRE_EXCEPT.

static void Ogre::Codec::unregisterCodec ( Codec pCodec)
inlinestatic

Unregisters a codec from the database.

Definition at line 100 of file OgreCodec.h.

References getType().

Member Data Documentation

CodecList Ogre::Codec::msMapCodecs
staticprotected

A map that contains all the registered codecs.

Definition at line 60 of file OgreCodec.h.


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