Class CMdaImageBitmapToFileUtility

Interface status:

deprecated

class CMdaImageBitmapToFileUtility : public CMdaImageDataWriteUtility;

Description

Implements format conversion of a bitmap to a file-based image.

Replaced by Image Conversion library - use CImageEncoder::FileNewL(RFs &,const TDesC &,const TDesC8 &,const TOptions)

The class provides functions to create an instance of this conversion utility and to create the file. Conversion is performed using the image conversion utility interface.

Derivation

• MMdaObjectStateChangeObserver - ...

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

• CActive - The core class of the active object abstraction.

• CMdaImageUtility - Defines the public interface to image conversion.

• CMdaImageDataWriteUtility - Base class used in the derivation of CMdaImageBitmapToDescUtility and CMdaImageB...

• CMdaImageBitmapToFileUtility - Implements format conversion of a bitmap to a file-based image.

Members

Defined in CMdaImageBitmapToFileUtility:

• CreateL(const TDesC &,TMdaClipFormat *,TMdaPackage *,TMdaPackage *)Creates a new file to receive the file-based image.
• NewL(MMdaImageUtilObserver &,CMdaServer *)Constructs a new instance of the bitmap to file-based image conversion utility.

Inherited from CActive:

• CActive(TInt)Constructs the active object with the specified priority.
• Cancel()Cancels the wait for completion of an outstanding request.
• Deque()Removes the active object from the active scheduler's list of active objects.
• EPriorityHighA priority higher than EPriorityUserInput.
• EPriorityIdleA low priority, useful for active objects representing background processing.
• EPriorityLowA priority higher than EPriorityIdle but lower than EPriorityStandard.
• EPriorityStandardMost active objects will have this priority.
• EPriorityUserInputA priority higher than EPriorityStandard; useful for active objects handling use...
• Extension_(TUint,TAny *&,TAny *)Extension function
• IsActive()constDetermines whether the active object has a request outstanding.
• IsAdded()constDetermines whether the active object has been added to the active scheduler's li...
• Priority()constGets the priority of the active object.
• RunError(TInt)Handles a leave occurring in the request completion event handler CActive::RunL(...
• SetActive()Indicates that the active object has issued a request and that it is now outstan...
• SetPriority(TInt)Sets the priority of the active object.
• TPriorityDefines standard priorities for active objects.
• iStatusThe request status associated with an asynchronous request.

Inherited from CBase:

• Delete(CBase *)Deletes the specified object.
• 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 CMdaImageDataWriteUtility:

• CancelConvertL()Cancels the conversion operation.
• ConvertL(CFbsBitmap &,CFbsBitmap &,TInt)
• ConvertL(CFbsBitmap &,const TRect &,TInt)
• DoCancel()Implements cancellation of an outstanding request.
• DoClose()
• Encoder()const
• ImageWriteUtil_Reserved1()
• ImageWriteUtil_Reserved2()
• ImageWriteUtil_Reserved3()
• RunL()Handles an active object's request completion event.

Inherited from CMdaImageUtility:

• Close()Closes the open file-based or descriptor-based image.
• ConvertL(CFbsBitmap &,TInt)Begins the image conversion operation for the specified frame overloaded functio...
• FrameCount()constReturns the number of frames in the image, counting from the first frame in the ...
• FrameInfo(TInt,TFrameInfo &)constRetrieves information about the specified frame.
• ImageUtil_Reserved1()
• ImageUtil_Reserved2()
• ImageUtil_Reserved3()
• ImageUtil_Reserved4()
• MoscoStateChangeEvent(CBase *,TInt,TInt,TInt)

See also:

• CImageEncoder::FileNewL(RFs &,const TDesC &,const TDesC8 &,const TOptions)Creates an encoder based on a specified MIME type and write output to a named fi...

Interface status:

deprecated

Inherited from: CMdaImageBitmapToFileUtility

IMPORT_C static CMdaImageBitmapToFileUtility* NewL(MMdaImageUtilObserver &aObserver, CMdaServer *aServer=0);

Description

Constructs a new instance of the bitmap to file-based image conversion utility.

The function leaves if this object cannot be created.

Parameters

MMdaImageUtilObserver &aObserver The image utility observer interface CMdaServer *aServer A pointer to a server object. The default is NULL which means that one is automatically constructed and owned by this conversion utility object. If not NULL, the client must construct, and be responsible for, the server object. This option may be more efficient if a number of conversion utility objects are to be created.

Return value

CMdaImageBitmapToFileUtility * A pointer to the new instance of the bitmap to file-based image conversion utility.

Interface status:

deprecated

Inherited from: CMdaImageBitmapToFileUtility

IMPORT_C void CreateL(const TDesC &aFileName, TMdaClipFormat *aFormat, TMdaPackage *aCodec, TMdaPackage *aExtra);

Description

Creates a new file to receive the file-based image.

The function is asynchronous. When the operation is complete, successfully or otherwise, the callback function MMdaImageUtilObserver::MiuoCreateComplete(TInt) is called. The file must be have been created before any conversion operation can start. Note, however, that the file will expand to accommodate the data i.e. image data is not truncated if the original size of the file is too small.

Parameters

const TDesC16 &aFileName The full path name of the file to be created. TMdaClipFormat *aFormat The data format. TMdaPackage *aCodec The codec to use. TMdaPackage *aExtra Any additional information which the Media Server may need to recognise the data format.