Class CJPEGExifEncoder

class CJPEGExifEncoder : public CImageEncoder;

Description

Provides access to the exif jpeg encoder.

This class provides functions to encode jpeg images held in files or descriptors.

Derivation

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

• CImageEncoder - Provides access to the ICL (image conversion library) encoders.

• CJPEGExifEncoder - Provides access to the exif jpeg encoder.

Members

Defined in CJPEGExifEncoder:

• ConstructL()Initialises an exif encoder.
• ExifMetadata()gets the metadata associated to this instance of the encoder
• NewL()Constructs a new exif encoder.

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 CImageEncoder:

• Cancel()Asynchronously cancels any conversions currently in progress.
• Convert(TRequestStatus *,const CFbsBitmap &,const CFrameImageData *)Encodes a bitmap asynchronously.
• CustomAsync(TRequestStatus *,TInt)Sets up background convert cycle, bypassing CImageEncoder::Convert(TRequestStatu...
• CustomSyncL(TInt)Calls CImageEncoderPlugin::HandleCustomSyncL(TInt) that executes user defined pl...
• DataNewL(HBufC8 *&,const TDesC8 &,const TOptions)Creates a plugin encoder for a specified MIME type and writes output to a descri...
• DataNewL(HBufC8 *&,const TOptions,const TUid,const TUid,const TUid)Creates a plugin encoder based on optional parameters and writes output to a des...
• EOptionAlwaysThreadPerform the encoding in a separate thread
• EOptionExtReserved1Reserved.
• EOptionExtReserved2Reserved.
• EOptionExtReserved3Reserved.
• EOptionGenerateAdaptivePaletteIf the codec supports it, generate a palette based on the colors present in the ...
• EOptionNoneNo flag set
• FileNewL(RFile &,const TDesC8 &,const TOptions)Creates an encoder based on a specified MIME type and write output to a named fi...
• FileNewL(RFile &,const TOptions,const TUid,const TUid,const TUid)Creates an encoder based on a supplied parameters and writes output to a named f...
• FileNewL(RFs &,const TDesC &,const TDesC8 &,const TOptions)Creates an encoder based on a specified MIME type and write output to a named fi...
• FileNewL(RFs &,const TDesC &,const TOptions,const TUid,const TUid,const TUid)Creates an encoder based on a supplied parameters and writes output to a named f...
• GetFileTypesL(RFileExtensionMIMETypeArray &)Get a list of the file extensions that can be encoded and their corresponding MI...
• GetImageSubTypesL(const TUid,RImageTypeDescriptionArray &)For a given basic image type, returns a list of the image sub-types that can be ...
• GetImageTypesL(RImageTypeDescriptionArray &)Returns a list of the basic image types that can be encoded, based on the curren...
• ImplementationUid()constReturns the implementation UID of the encoder being used to encode the bitmap.
• Plugin()constReturns the associated CImageEncoderPlugin.
• SetEncoderThreadPriority(TThreadPriority)Set the encoder worker thread priority
• SetThumbnail(TBool)Select to encode or not the thumbnail
• TOptionsFlags to control how the image is encoded. These can be combined using an OR ope...

IMPORT_C static CJPEGExifEncoder* NewL();

Description

Constructs a new exif encoder.

A leave occurs if there is insufficient memory available.

Return value

CJPEGExifEncoder * A pointer to the new jpeg exif encoder.

protected: IMPORT_C void ConstructL();

Description

Initialises an exif encoder.

A leave occurs if the associated ICL plugin could not be instanciated

IMPORT_C MExifMetadata* ExifMetadata();

Description

gets the metadata associated to this instance of the encoder

NULL is returned if no metadata was found

Return value

MExifMetadata * A pointer to the metadata