author | MattD <mattd@symbian.org> |
Tue, 23 Mar 2010 13:32:10 +0000 | |
branch | NewGraphicsArchitecture |
changeset 21 | b77288873c88 |
parent 0 | 5d03bc08d59c |
permissions | -rw-r--r-- |
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// Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// CompositionSurfaceUpdate.h |
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// Interface to be implemented and registered with SUS by listener for surface content update messages. |
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// |
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#ifndef __COMPOSITIONSURFACEUPDATE_H__ |
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#define __COMPOSITIONSURFACEUPDATE_H__ |
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|
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/** |
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* \brief Interface to implement and register with SUS to receive ContentUpdated() notifications. |
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* |
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* |
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**/ |
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NONSHARABLE_CLASS(MCompositionSurfaceUpdate) |
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{ |
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public: |
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enum |
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{ |
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KUidCompositionSurfaceUpdate = 0x10286498, |
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ETypeId= KUidCompositionSurfaceUpdate |
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}; |
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/*-------------------------------------------------------------------*//*! |
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* \brief Gets the API version number of the |
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* implementation. |
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* |
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* @return 1 for Oghma conformant implementation, |
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* 2 for Sphinx (Maybe). |
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* 3 for Native Stream first version. |
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*//*-------------------------------------------------------------------*/ |
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|
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virtual TInt ApiVersion (void) = 0; |
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|
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/*-------------------------------------------------------------------*//*! |
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* \brief Gets the internal version number of the |
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* implementation. |
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* |
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* @return The version number of the |
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* instance. |
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*//*-------------------------------------------------------------------*/ |
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|
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virtual TVersion InternalVersion (void) = 0; |
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|
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/*-------------------------------------------------------------------*//*! |
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* \brief A function that responds to surface content notifications. |
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* |
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* When the contents of a surface change, this function gets called |
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* by a mechanism that is an implementation detail of the graphics |
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* driver together with the Native Stream and Compositor implementations. |
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* The call can originate from different processes and the |
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* Native Stream together with the Compositor implementation |
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* relays the information content of it, through implementation |
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* specific means, to trigger the actual composition soon after this |
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* call - this composition call should be synchronized with the |
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* refresh rate of the screen. |
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* |
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* @param aSurface The surface that has been updated. |
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* @param aBuffer The buffer of the surface to be used in |
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* composition. Integer starting from 0. |
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* @param aRegion The sub-area that has the updates. If NULL, the |
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* whole surface is considered changed. |
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* @param aStatusConsumed A request status object or NULL. If not NULL, then the |
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* request status is completed once the receiver |
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* does not anymore need the contents of the |
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* surface to render the update. This may happen |
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* before actually displaying the finished frame. |
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* @param aStatusDisplayed This is signaled after the composited frame |
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* is posted the to display for the first time after |
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* the update. After this the value in |
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* aTimeStamp is valid, if the value in the |
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* status object is KErrNone. Can be NULL, if |
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* no signal is desired. |
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* @param aTimeStamp Value of the User::FastCounter() right after the |
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* display refresh that signaled aStatusDisplayed. |
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* @param aStatusDispXTimes This is signaled when the surface has been on |
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* the screen for aDisplayedXTimes refreshes, |
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* including the update that signaled aStatusDisplayed. |
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* Can be NULL, if no signal is wanted. |
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* @param aDisplayedXTimes The number of refreshes after which aStatusDispXTimes |
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* is signaled or NULL. If values is provided, it must be |
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* >= 1. |
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* |
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* @pre The MCompositionSurfaceUpdate implementation is waiting for content |
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* update notifications. |
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* @pre aSurface.IsNull() returns EFalse. |
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* @pre The surface aSurface is registered with the receiver or all status |
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* requests are completed with KErrArgument. |
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* @pre Either both aStatusDisplayed and aTimeStamp are NULL or neither |
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* of them are. |
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* @pre Either both aStatusDispXTimes and aDisplayedXTimes are NULL or |
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* neither of them are. |
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* @post The MCompositionSurfaceUpdate implementation is waiting for vsync |
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* or another synchronisation method to trigger composition, |
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* depending on cached visibility information. |
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* @note The updated region is used only as an optimisation hint. |
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* the current contents of the surface are always used for |
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* composition independent of the aRegion. |
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* @see Surface Update API Specification for further details |
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* about the semantics of the parameters and return values |
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* of the TRequestStatus objects. |
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*//*-------------------------------------------------------------------*/ |
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112 |
|
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virtual void ContentUpdated (const TSurfaceId& aSurface, |
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TInt aBuffer, |
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const TRegion* aRegion, |
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TRequestStatus* aStatusConsumed, |
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TRequestStatus* aStatusDisplayed, |
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TUint32* aTimeStamp, |
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TRequestStatus* aStatusDispXTimes, |
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TInt* aDisplayedXTimes) = 0; |
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public: |
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/** Get Extension Interface. |
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* Implemented using the CBase::Extension_() mechanism |
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* Note that the pointer returned is only good for the lifetime of the called CBase derived object. |
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* @param aExtensionId The GUID/ Well-known ID of the interface |
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* @return pointer to the interface or NULL if not available |
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**/ |
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inline TAny* GetInterface(TUint aExtensionId); |
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/** Get Extension Interface - templated helper. |
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* Resolves the ID and returned pointer based on the class name. |
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* Note that the pointer returned is only good for the lifetime of the called CBase derived object. |
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* Class name should support ETypeId intergral value, else use non-template version. |
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* @param MClass The class of the interface with embedded GUID / Well known ID |
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* @return pointer to the interface or NULL if not available |
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**/ |
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template <class MClass> MClass* GetInterface() |
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{ |
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return static_cast<MClass*>(GetInterface(MClass::ETypeId)); |
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} |
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140 |
|
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protected: //From CBase |
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virtual TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1)=0; |
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143 |
|
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}; |
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145 |
|
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inline TAny* MCompositionSurfaceUpdate::GetInterface(TUint aExtensionId) |
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{ |
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TAny* retVal=NULL; |
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//Note that extension is intentionally not overloaded in MCompositionSurfaceUpdate |
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if (this->Extension_(aExtensionId,retVal,NULL)<KErrNone) |
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{ |
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return NULL; |
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} |
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else |
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{ |
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return retVal; |
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} |
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} |
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|
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#endif //__COMPOSITIONSURFACEUPDATE_H__ |