Class CJPEGExifEncoderPlugin

class CJPEGExifEncoderPlugin : public CImageEncoderPlugin;

Description

The plugin API for Image Converter Library EXIF encoder plugins.

Derivation

• CBase - Base class for all classes to be instantiated on the heap.

• CImageEncoderPlugin - The plugin API for Image Converter Library encoder plugins.

• CJPEGExifEncoderPlugin - The plugin API for Image Converter Library EXIF encoder plugins.

Members

Defined in CJPEGExifEncoderPlugin:

• ExifMetadata()Returns the EXIF metadata associated with the image being encoded. This is a pur...

Inherited from CBase:

• Delete(CBase *)Deletes the specified object.
• Extension_(TUint,TAny *&,TAny *)Extension function
• operator new(TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TAny *)Initialises the object to binary zeroes.
• operator new(TUint,TLeave)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TLeave,TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TUint)Allocates the object from the heap and then initialises its contents to binary z...

Inherited from CImageEncoderPlugin:

• AmInThread()constIndicates if this encoder is running in a separate thread.
• Cleanup()Called when the plugin is destroyed or an encode is cancelled to perform cleanup...
• CurrentImageSizeL()constReturns the current size of the encoded image in bytes.
• DestinationData()Returns the value to be fed to CImageWriteCodec::ProcessFrameL(TBufPtr8 &), ...
• DoConvert()Performs the encoding process.
• FinishConvertL()Notifies the framework that the main frame encoding is complete, so it can tidy ...
• FrameInfoOverallSizeInPixels()constReturns the overall size of the image frame in pixels.
• HandleCustomSyncL(TInt)Called as a result of the associated CImageEncoder::CustomSyncL(TInt) function b...
• HandleProcessFrameResult(TInt,TFrameState)Deals with the result from ProcessFrameL().
• ImageWriteCodec()constReturns the plugin's write codec.
• InitConvertL()Initialises data structures prior to encoding a frame.
• InitCustomAsyncL(TInt)Called as a result of the associated CImageEncoder::CustomAsync(TRequestStatus *...
• NotifyComplete()Plugin defined actions resulting from a call by CImageEncoderPlugin::RequestComp...
• Position()constReturns the current position within the internal data buffer that is being writt...
• PrepareEncoderL(const CFrameImageData *)Allocates the specific codec used for the encoding and passes ownership to the p...
• RequestComplete(TInt)This function must be called on completion of encoding the image data.
• RequestInitL()Forces initialization of data structures prior to decoding a frame.
• SelfComplete(TInt)Must be called at the end of a slice of encoding. If called with KErrNone will c...
• SetImageWriteCodec(CImageWriteCodec *)constSets the plugin's write codec.
• SetSelfPending()May be called at the start of a slice of encoding if the encoding is expected to...
• ShouldAbort()constIndicates if an encode should abort early (ie. following a Cancel).
• Source()constReturns the bitmap which is being encoded.
• StartPosition()constReturns the starting position of the internal data buffer of the encoded image t...
• UpdateHeaderL()May be used to fill in additional fields at the end of the encoding process, whi...
• ValidSource()constChecks the validity of the bitmap which is being encoded. Returns ETrue if the b...
• WriteDataL(TInt,const TDesC8 &)Writes a descriptor to the internal data buffer of the encoded image without inc...
• WriteDataPositionIncL(TInt,const TDesC8 &)Writes a descriptor to the internal data buffer of the encoded image. In additio...

IMPORT_C virtual MExifMetadata* ExifMetadata()=0;

Description

Returns the EXIF metadata associated with the image being encoded. This is a pure virtual function that each individual plugin must implement.

Return value

MExifMetadata * A pointer to the metadata. NULL if there is no metadata available.