Class CMdaImageBitmapToBitmapUtility

Interface status:

deprecated

class CMdaImageBitmapToBitmapUtility : public CMdaImageUtility;

Description

Implements bitmap to bitmap copying and colour depth conversion.

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

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.

• CMdaImageBitmapToBitmapUtility - Implements bitmap to bitmap copying and colour depth conversion.

Members

Defined in CMdaImageBitmapToBitmapUtility:

• CancelConvertL()Cancels any conversion in progress.
• ConvertL(CFbsBitmap &,CFbsBitmap &,TInt)Converts a bitmap with a mask. Not supported
• ConvertL(CFbsBitmap &,TInt)Converts a bitmap.
• DoCancel()Implements cancellation of an outstanding request.
• DoClose()
• NewL(MMdaImageUtilObserver &,CMdaServer *)Constructs and initialises a new instance of the bitmap converter.
• OpenL(CFbsBitmap &)Opens the bitmap converter utility.
• RunL()Handles an active object's request completion event.
• ~CMdaImageBitmapToBitmapUtility()Destructor.

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 CMdaImageUtility:

• Close()Closes the open file-based or descriptor-based image.
• 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: CMdaImageBitmapToBitmapUtility

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

Description

Constructs and initialises a new instance of the bitmap converter.

The function leaves if the bitmap converter 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

CMdaImageBitmapToBitmapUtility * A pointer to the new bitmap converter object.

Interface status:

deprecated

Inherited from: CMdaImageBitmapToBitmapUtility

IMPORT_C ~CMdaImageBitmapToBitmapUtility();

Description

Destructor.

Interface status:

deprecated

Inherited from: CMdaImageBitmapToBitmapUtility

IMPORT_C void OpenL(CFbsBitmap &aBitmap);

Description

Opens the bitmap converter utility.

The function is asynchronous. When the open operation is complete, successfully or otherwise, the callback function MMdaImageUtilObserver::MiuoOpenComplete(TInt) is called.

The source bitmap must be open before any conversion operation can start.

Parameters

CFbsBitmap &aBitmap The bitmap to be used as the source for subsequent conversions.

Interface status:

deprecated

Inherited from: CMdaImageBitmapToBitmapUtility

IMPORT_C virtual void ConvertL(CFbsBitmap &aBitmap, TInt aFrameNumber=0);

Description

Converts a bitmap.

The operation is asynchronous. When the conversion operation is complete, successfully or otherwise, the callback function MMdaImageUtilObserver::MiuoConvertComplete(TInt) is called.

Parameters

CFbsBitmap &aBitmap The destination bitmap. TInt aFrameNumber The frame number. This value is relative to zero.

Interface status:

deprecated

Inherited from: CMdaImageBitmapToBitmapUtility

IMPORT_C virtual void ConvertL(CFbsBitmap &aBitmap, CFbsBitmap &aMaskBitmap, TInt aFrameNumber=0);

Description

Converts a bitmap with a mask. Not supported

Parameters

CFbsBitmap &aBitmap A reference to the bitmap which is the target of the conversion operation. CFbsBitmap &aMaskBitmap The overloaded variant which takes this argument is not supported for bitmap to bitmap conversion. This variant leaves with KErrNotSupported. TInt aFrameNumber The frame number. This value is relative to zero.

Interface status:

deprecated

Inherited from: CMdaImageBitmapToBitmapUtility

IMPORT_C virtual void CancelConvertL();

Description

Cancels any conversion in progress.

The callback function MMdaImageUtilObserver::MiuoConvertComplete(TInt) is not called.

Interface status:

deprecated

Inherited from: CMdaImageBitmapToBitmapUtility

virtual void RunL();

Description

Handles an active object's request completion event.

A derived class must provide an implementation to handle the completed request. If appropriate, it may issue another request.

The function is called by the active scheduler when a request completion event occurs, i.e. after the active scheduler's WaitForAnyRequest() function completes.

Before calling this active object's CMdaImageBitmapToBitmapUtility::RunL() function, the active scheduler has:

1. decided that this is the highest priority active object with a completed request

2. marked this active object's request as complete (i.e. the request is no longer outstanding)

CMdaImageBitmapToBitmapUtility::RunL() runs under a trap harness in the active scheduler. If it leaves, then the active scheduler calls CActive::RunError(TInt) to handle the leave.

Note that once the active scheduler's Start() function has been called, all user code is run under one of the program's active object's CMdaImageBitmapToBitmapUtility::RunL() or CActive::RunError(TInt) functions.

See also:

• CActiveScheduler::Start()Starts a new wait loop under the control of the current active scheduler.
• CActiveScheduler::Error(TInt)constHandles the result of a leave occurring in an active object’s RunL() function.
• CActiveScheduler::WaitForAnyRequest()Wait for an asynchronous request to complete.

Interface status:

deprecated

Inherited from: CMdaImageBitmapToBitmapUtility

virtual void DoCancel();

Description

Implements cancellation of an outstanding request.

Interface status:

deprecated

Inherited from: CMdaImageBitmapToBitmapUtility

protected: virtual void DoClose();

Description