Class CMdaImageDataWriteUtility

Interface status:

deprecated

7.0s - Replaced by Image Conversion library - see CImageEncoder

class CMdaImageDataWriteUtility : public CMdaImageUtility;

Description

Base class used in the derivation of CMdaImageBitmapToDescUtility and CMdaImageBitmapToFileUtility.

It has no user accessible functions.

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...

Members

Defined in 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.
• ~CMdaImageDataWriteUtility()

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.
• 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:

• CMdaImageBitmapToDescUtilityThis class has been deprecated in 7.0s, it's functionality is now part of the Im...
• CMdaImageBitmapToFileUtilityImplements format conversion of a bitmap to a file-based image.

Interface status:

deprecated

Inherited from: CMdaImageDataWriteUtility

virtual ~CMdaImageDataWriteUtility();

Description

Interface status:

deprecated

Inherited from: CMdaImageDataWriteUtility

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

Description

Parameters

CFbsBitmap &aBitmap Not used. const TRect &aSourceRect Not used. TInt aFrameNumber Not used.

Interface status:

deprecated

Inherited from: CMdaImageDataWriteUtility

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

Description

Parameters

CFbsBitmap &aBitmap Not used. CFbsBitmap &aMaskBitmap Not used. TInt aFrameNumber Not used.

See also:

• CMdaImageUtility::ConvertL(CFbsBitmap &,CFbsBitmap &,TInt)Begins the image conversion operation for the specified frame overloaded functio...

Interface status:

deprecated

Inherited from: CMdaImageDataWriteUtility

IMPORT_C virtual void CancelConvertL();

Description

Cancels the conversion operation.

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

Interface status:

deprecated

Inherited from: CMdaImageDataWriteUtility

protected: 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 CMdaImageDataWriteUtility::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)

CMdaImageDataWriteUtility::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 CMdaImageDataWriteUtility::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: CMdaImageDataWriteUtility

protected: virtual void DoCancel();

Description

Implements cancellation of an outstanding request.

This function is called as part of the active object's CActive::Cancel().

It must call the appropriate cancel function offered by the active object's asynchronous service provider. The asynchronous service provider's cancel is expected to act immediately.

CMdaImageDataWriteUtility::DoCancel() must not wait for event completion; this is handled by CActive::Cancel().

See also:

• CActive::Cancel()Cancels the wait for completion of an outstanding request.

Interface status:

deprecated

Inherited from: CMdaImageDataWriteUtility

protected: virtual CImageEncoder* Encoder() const;

Description

Return value

CImageEncoder *

Interface status:

deprecated

Inherited from: CMdaImageDataWriteUtility

virtual void ImageWriteUtil_Reserved1();

Description

Interface status:

deprecated

Inherited from: CMdaImageDataWriteUtility

virtual void ImageWriteUtil_Reserved2();

Description

Interface status:

deprecated

Inherited from: CMdaImageDataWriteUtility

virtual void ImageWriteUtil_Reserved3();

Description

Interface status:

deprecated

Inherited from: CMdaImageDataWriteUtility

protected: virtual void DoClose();

Description