MCameraV2DirectViewFinder Class Reference
| class MCameraV2DirectViewFinder |
Mixin class for implementation of CCameraV2DirectViewFinder methods.
Member Functions Documentation
CreateHistogramImplFactoryL(MImplementationFactory *&)
Retrieves the concrete factory handle for the histogram implementation in order to use it specifically for a particular viewfinder.
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leave
- May leave with any error code.
Parameters
| MImplementationFactory *& aImplFactoryPtr | The concrete factory handle for the histogram implementation specific to the given view finder. |
GetDirectSnapshotImpl(TUid)
|
TAny * | GetDirectSnapshotImpl | ( | TUid | aInterface | ) | const [pure virtual] |
Provides the interface pointers for the concrete implementation of CCameraDirectSnapshot.
Parameters
| TUid aInterface | Interface uid for a particular M-class of direct snapshot. |
GetDirectViewFinderPropertiesL(TInt &, TRect &, TRect &)
| void | GetDirectViewFinderPropertiesL | ( | TInt & | aScreenNumber, |
| | TRect & | aScreenRect, |
| | TRect & | aClipRect |
| | ) | const [pure virtual] |
Retrieves the parameters associated with the direct viewfinder.
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leave
- May leave with any error code.
Parameters
| TInt & aScreenNumber | Retrieves the screen number on which the direct viewfinder is supposed to run. |
| TRect & aScreenRect | Retrieves the TRect which identifies the portion of the screen to which view finder data is to be transferred. |
| TRect & aClipRect | Retrieves the TRect which identifies the rectangle to which the screen will be clipped. |
GetImageProcessingImplFactoryL(MImplementationFactory *&)
Retrieves the concrete factory handle for the image processing implementation in order to use it specifically for a particular viewfinder.
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leave
- May leave with any error code.
Parameters
| MImplementationFactory *& aImplFactoryPtr | The concrete factory handle for the image processing implementation specific to the given view finder. |
GetViewFinderStateL(CCamera::CCameraV2DirectViewFinder::TViewFinderState &)
Retrieves the state of the direct viewfinder.
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leave
- May leave with any error code.
PauseViewFinderDirect()
| void | PauseViewFinderDirect | ( | ) | [pure virtual] |
Pauses the direct viewfinder.
Release(CCamera::CCameraV2DirectViewFinder *)
ResumeViewFinderDirect()
| void | ResumeViewFinderDirect | ( | ) | [pure virtual] |
Resumes the direct viewfinder
SetDirectViewFinderHandle(CCamera::CCameraV2DirectViewFinder *)
The pointer to the client view finder class used to pass back to the client via observer callbacks. Implementation is not supposed to destroy this object.
MDirectViewFinderObserver
SetDirectViewFinderObserver(MDirectViewFinderObserver &)
The observer for the direct view finder is passed to the implementation for passing callbacks on it.
StartViewFinderDirectL(RWsSession &, CWsScreenDevice &, RWindowBase &, TRect &)
| void | StartViewFinderDirectL | ( | RWsSession & | aWs, |
| | CWsScreenDevice & | aScreenDevice, |
| | RWindowBase & | aWindow, |
| | TRect & | aScreenRect |
| | ) | [pure virtual] |
Creates a new viewfinder and starts transfer of view finder data to the given portion of the screen using direct screen access.
The aScreenRect parameter is in screen coordinates and may be modified if, for example, the camera requires the destination to have a certain byte alignment, and so on.
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leave
- KErrInUse if another direct viewfinder is running with the same set of window parameters. May leave with any other error code.
Parameters
| RWsSession & aWs | Window server session. |
| CWsScreenDevice & aScreenDevice | Screen device. |
| RWindowBase & aWindow | Displayable window. |
| TRect & aScreenRect | Portion of the screen to which view finder data is to be transferred. This is in screen co-ordinates and may be modified if, for example, the camera requires the destination to have a certain byte alignment. |
StartViewFinderDirectL(RWsSession &, CWsScreenDevice &, RWindowBase &, TRect &, TRect &)
| void | StartViewFinderDirectL | ( | RWsSession & | aWs, |
| | CWsScreenDevice & | aScreenDevice, |
| | RWindowBase & | aWindow, |
| | TRect & | aScreenRect, |
| | TRect & | aClipRect |
| | ) | [pure virtual] |
Creates a new viewfinder and starts transfer of view finder data to the given portion of the screen using direct screen access and also clips to the specified portion of the screen.
The view finder has the same size and position as aScreenRect but is only visible in the intersection of aScreenRect and aClipRect. May leave with KErrNotSupported or KErrNotReady if Reserve() has not been called, or has not yet completed.
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leave
- KErrInUse if another direct viewfinder is running with the same set of window parameters. May leave with any other error code.
Parameters
| RWsSession & aWs | Window server session. |
| CWsScreenDevice & aScreenDevice | Screen device. |
| RWindowBase & aWindow | Displayable window. |
| TRect & aScreenRect | Portion of the screen to which view finder data is to be transferred. This is in screen coordinates and may be modified if, for example, the camera requires the destination to have a certain byte alignment. |
| TRect & aClipRect | The rectangle to which the screen will be clipped. |
StopDirectViewFinder()
| void | StopDirectViewFinder | ( | ) | [pure virtual] |
Stops the direct viewfinder.
Copyright ©2010 Nokia Corporation and/or its subsidiary(-ies).
All rights
reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License
v1.0.