sl@0: // Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // openwfcstream.cpp
sl@0: // C API for surface stream implementation of OpenWF-C NativeStream 
sl@0: //
sl@0: 
sl@0: 
sl@0: //  Include Files  
sl@0: #include <e32def.h>
sl@0: #include <pixelformats.h>
sl@0: #include <graphics/suerror.h>
sl@0: #include "symbianstream.h"
sl@0: #include "surfacestream.h"
sl@0: #include "streammap.h"
sl@0: #include "openwfcpanic.h"
sl@0: 
sl@0: 
sl@0: extern "C"{
sl@0: 
sl@0: EXPORT_C TErrCode SymbianStreamAcquire( const TSurfaceId* aId, SymbianStreamType* aReturnStream)
sl@0: 	{
sl@0: 	if (aId && !aId->IsNull())
sl@0: 		{
sl@0:         CSurfaceStream* stream = NULL;
sl@0:         if (aId->Type()==TSurfaceId::EStreamHandle)
sl@0:             {
sl@0:             stream=CSurfaceStream::FromHandle(aId);
sl@0:             __ASSERT_ALWAYS(stream, Panic(EOwfSymbianStreamUnexpectedError));
sl@0:             stream->AddReference();
sl@0:             *aReturnStream= stream->ToHandle();
sl@0:             return KErrNone;
sl@0:             }
sl@0:         else
sl@0:             {
sl@0:             TRAPD(err,stream = COpenWfcStreamMap::InstanceL().AcquireL(*aId));
sl@0:             if (stream)
sl@0:                 {
sl@0:                 *aReturnStream = stream->ToHandle();
sl@0:                 return KErrNone;
sl@0:                 }
sl@0:             else
sl@0:                 {
sl@0:                 return err;
sl@0:                 }
sl@0:             }
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		*aReturnStream = NULL;
sl@0: 		return KErrBadHandle;
sl@0: 		}	
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TErrCode SymbianStreamFind( const TSurfaceId* aId, SymbianStreamType* aReturnStream)
sl@0: 	{
sl@0: 	if (aId && !aId->IsNull())
sl@0: 		{
sl@0:         CSurfaceStream* stream=NULL;
sl@0:         if (aId->Type()==TSurfaceId::EStreamHandle)
sl@0:             {
sl@0:             stream=CSurfaceStream::FromHandle(aId);
sl@0:             __ASSERT_DEBUG(stream, Panic(EOwfSymbianStreamBadArgument));
sl@0:             stream->AddReference();
sl@0:             *aReturnStream= stream->ToHandle();
sl@0:             return KErrNone;
sl@0:             }
sl@0:         else
sl@0:             {
sl@0:             TRAPD(err,stream = COpenWfcStreamMap::InstanceL().Find(*aId));
sl@0:             if (stream)
sl@0:                 {
sl@0:                 *aReturnStream = stream->ToHandle();
sl@0:                 return KErrNone;
sl@0:                 }
sl@0:             else
sl@0:                 {
sl@0:                 *aReturnStream = NULL;
sl@0:                 if (err==KErrNone)
sl@0:                     {
sl@0:                     return KErrNotFound;
sl@0:                     }
sl@0:                 else
sl@0:                     {
sl@0:                     return err;
sl@0:                     }
sl@0:                 }
sl@0:             }
sl@0:         }
sl@0: 	else
sl@0: 		{
sl@0: 		*aReturnStream = NULL;
sl@0: 		return KErrBadHandle;
sl@0: 		}	
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void SymbianStreamAddReference(SymbianStreamType aStream)
sl@0: 	{
sl@0: 	CSurfaceStream*	sstream=CSurfaceStream::FromHandle(aStream);
sl@0: 	if (sstream)
sl@0: 		{
sl@0: 		sstream->AddReference();
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TErrCode SymbianStreamGetBufferId( SymbianStreamType aStream, 
sl@0:                         SymbianStreamBuffer aBufferHandle, 
sl@0:                         khronos_int32_t* aReturnIndex, 
sl@0:                         const TSurfaceId** aReturnSurface)
sl@0: 	{
sl@0: 	CSurfaceStream*	stream=CSurfaceStream::FromHandle(aStream);
sl@0:     __ASSERT_ALWAYS(stream, Panic(EOwfSymbianStreamBadArgument));
sl@0:     if (aReturnIndex)
sl@0:         {
sl@0:         *aReturnIndex=stream->BufferHandleToIndex(aBufferHandle);
sl@0:         *aReturnSurface = &stream->SurfaceId();
sl@0:         }
sl@0:     return KErrNone;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void SymbianStreamRemoveReference(SymbianStreamType aStream)
sl@0: 	{
sl@0: 	CSurfaceStream*	stream=CSurfaceStream::FromHandle(aStream);
sl@0:     __ASSERT_ALWAYS(stream, Panic(EOwfSymbianStreamBadArgument));
sl@0:     stream->ReleaseReference();
sl@0: 	}
sl@0: EXPORT_C void SymbianStreamGetHeader( SymbianStreamType aStream,
sl@0:                             khronos_int32_t* aWidth, 
sl@0:                             khronos_int32_t* aHeight, 
sl@0:                             khronos_int32_t* aStride, 
sl@0:                             khronos_int32_t* aFormat, 
sl@0:                             khronos_int32_t* aPixelSize)
sl@0: 	{
sl@0: 	CSurfaceStream*	stream=CSurfaceStream::FromHandle(aStream);
sl@0:     __ASSERT_ALWAYS(stream, Panic(EOwfSymbianStreamBadArgument));
sl@0:     stream->GetHeader(aWidth,aHeight,aStride,aFormat,aPixelSize);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TErrCode SymbianStreamAcquireReadBuffer( SymbianStreamType aStream, SymbianStreamBuffer* aReturnBuffer)
sl@0: 	{
sl@0: 	CSurfaceStream*	stream=CSurfaceStream::FromHandle(aStream);
sl@0:     __ASSERT_ALWAYS(stream, Panic(EOwfSymbianStreamBadArgument));
sl@0:     *aReturnBuffer = stream->AcquireReadBuffer();
sl@0:     return KErrNone;
sl@0: 	}
sl@0: EXPORT_C TErrCode SymbianStreamReleaseReadBuffer( SymbianStreamType aStream, 
sl@0:                                                     SymbianStreamBuffer aBuffer)
sl@0: 	{
sl@0: 	CSurfaceStream*	stream=CSurfaceStream::FromHandle(aStream);
sl@0:     __ASSERT_ALWAYS(stream, Panic(EOwfSymbianStreamBadArgument));
sl@0:     return stream->ReleaseReadBuffer(aBuffer);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TErrCode SymbianStreamAcquireWriteBuffer( SymbianStreamType aStream, SymbianStreamBuffer* aReturnBuffer)
sl@0: 	{
sl@0: 	CSurfaceStream*	stream=CSurfaceStream::FromHandle(aStream);
sl@0:     __ASSERT_ALWAYS(stream, Panic(EOwfSymbianStreamBadArgument));
sl@0:     *aReturnBuffer = stream->AcquireWriteBuffer();
sl@0:     if (*aReturnBuffer != NULL)
sl@0:         {
sl@0:         return KErrNone;
sl@0:         }
sl@0:     else 
sl@0:         {
sl@0:         return KErrInUse;
sl@0:         }
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TErrCode SymbianStreamReleaseWriteBuffer( SymbianStreamType aStream, 
sl@0:                                                     SymbianStreamBuffer aBuffer)
sl@0: 	{
sl@0: 	CSurfaceStream*	stream=CSurfaceStream::FromHandle(aStream);
sl@0:     __ASSERT_ALWAYS(stream, Panic(EOwfSymbianStreamBadArgument));
sl@0:     stream->ReleaseWriteBuffer(aBuffer);
sl@0:     return KErrNone;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TErrCode SymbianStreamAddObserver( SymbianStreamType aStream, 
sl@0:                             SymbianStreamCallback aObserver, 
sl@0:                             void* aData)
sl@0: 	{
sl@0:     CSurfaceStream* stream=CSurfaceStream::FromHandle(aStream);
sl@0:     if (stream && aObserver)
sl@0:         {
sl@0:         SYMOWF_DEFAULT_EVENT_PARAM eventPar;
sl@0:         eventPar.length = sizeof(eventPar);
sl@0:         eventPar.event = ESOWF_NoEvent;
sl@0:         aObserver(SYMBIAN_INVALID_HANDLE, ESOWF_ObserverReturnDefaultEvent, NULL, &eventPar);
sl@0:         return stream->AddObserver(aObserver, eventPar.event, KNoAssociatedScreenNumber, aData);
sl@0:         }
sl@0:     return KErrBadHandle;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TErrCode SymbianStreamRemoveObserver( SymbianStreamType aStream, 
sl@0:                                                 void* aData, 
sl@0:                                                 SymbianStreamEventBits aEvents)
sl@0:     {
sl@0:     CSurfaceStream* stream = CSurfaceStream::FromHandle(aStream);
sl@0:     if (stream)
sl@0:         {
sl@0:             return stream->RemoveObserver(aEvents, aData);
sl@0:         }
sl@0:     return KErrBadHandle;
sl@0:     }
sl@0: 
sl@0: 
sl@0: EXPORT_C TErrCode SymbianStreamGetBufferPointer( SymbianStreamType aStream, 
sl@0:                             SymbianStreamBuffer aBuffer,
sl@0:                             void** aReturnPointer)
sl@0: 	{
sl@0: 	CSurfaceStream*	stream=CSurfaceStream::FromHandle(aStream);
sl@0:     __ASSERT_ALWAYS(stream, Panic(EOwfSymbianStreamBadArgument));
sl@0:     *aReturnPointer = NULL;
sl@0:     TRAPD(err,*aReturnPointer = stream->GetBufferPtrL(aBuffer));
sl@0:     return err;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void 
sl@0: SymbianStreamSetProtectionFlag( SymbianStreamType aStream, khronos_bool aFlag)
sl@0: 	{
sl@0: 	CSurfaceStream*	stream=CSurfaceStream::FromHandle(aStream);
sl@0: 	if (stream)
sl@0: 		{
sl@0: 		stream->SetProtectionFlag(aFlag);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /*!
sl@0:  * \brief Register a screen number for surface update notifications.
sl@0:  *
sl@0:  * \param aScreenNum Screen number.
sl@0:  * 
sl@0:  * 
sl@0:  * \return Standard error code or KErrNone
sl@0:  */
sl@0: EXPORT_C TErrCode SymbianStreamRegisterScreenNotifications( khronos_int32_t aScreenNumber, 
sl@0:                                             khronos_int32_t aPriority, 
sl@0:                                             khronos_int32_t aInternalVersion)
sl@0: 	{
sl@0: 	khronos_int32_t err2=KErrUnknown;
sl@0: 	TRAPD(err,err2=COpenWfcStreamMap::InstanceL().RegisterScreenNotifications(aScreenNumber,aPriority,aInternalVersion));
sl@0: 	if (err)
sl@0: 		{
sl@0: 		return err;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		return err2;
sl@0: 		}
sl@0: 	}
sl@0: /*!
sl@0:  * \brief Get handle to registration of a screen number for surface update notifications.
sl@0:  *
sl@0:  * \param aScreenNum Screen number.
sl@0:  * 
sl@0:  * 
sl@0:  * \return Handle to internal object (currently a CBase), or NULL if not registered
sl@0:  */
sl@0: EXPORT_C TErrCode 
sl@0: SymbianStreamHasRegisteredScreenNotifications( khronos_int32_t aScreenNumber,void** aReturnState)
sl@0:     {
sl@0:     TRAPD(err,*aReturnState=(COpenWfcStreamMap::InstanceL().RegisteredScreenNotifications(aScreenNumber)));
sl@0:     return err;
sl@0:     }
sl@0: 
sl@0: 
sl@0: /*!
sl@0:  * \brief Unregister a screen number for surface update notifications.
sl@0:  *
sl@0:  * \param aScreenNum Screen number.
sl@0:  * 
sl@0:  * 
sl@0:  * \return Standard error code or KErrNone
sl@0:  */
sl@0: EXPORT_C TErrCode 
sl@0: SymbianStreamUnregisterScreenNotifications(khronos_int32_t aScreenNumber)
sl@0: 	{
sl@0: 	khronos_int32_t err2=KErrUnknown;
sl@0: 	TRAPD(err,err2=COpenWfcStreamMap::InstanceL().UnregisterScreenNotifications(aScreenNumber));
sl@0: 	if (err)
sl@0: 		{
sl@0: 		return err;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		return err2;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /*!
sl@0:  * \brief Check if two stream objects are the same surface.
sl@0:  *
sl@0:  * \param 	aStream 	compare these two streams.
sl@0:  * \param	aStream2	compare these two streams.
sl@0:  * 
sl@0:  * \return TRUE if they are the same object.
sl@0:  */
sl@0: EXPORT_C khronos_bool SymbianStreamSame(SymbianStreamType aStream, SymbianStreamType aStream2)
sl@0: 	{
sl@0: 	if  (aStream==aStream2)
sl@0: 		return KHR_BOOLEAN_TRUE;
sl@0: 	if (!aStream || !aStream2)
sl@0: 		return KHR_BOOLEAN_FALSE;
sl@0: 	if (*aStream==*aStream2)
sl@0: 		return KHR_BOOLEAN_TRUE;
sl@0: 	SymbianStreamType found;
sl@0: 	if (	aStream->Type()!=aStream->EStreamHandle
sl@0: 		&&	aStream2->Type()==aStream2->EStreamHandle)
sl@0: 		{
sl@0: 		if(KErrNone==SymbianStreamFind(aStream,&found))
sl@0: 			{
sl@0: 			if  (found==aStream2)
sl@0: 				return KHR_BOOLEAN_TRUE;
sl@0: 			}
sl@0: 		return KHR_BOOLEAN_FALSE;
sl@0: 		}
sl@0: 	if (	aStream2->Type()!=aStream2->EStreamHandle
sl@0: 		&&	aStream->Type()==aStream->EStreamHandle)
sl@0: 		{
sl@0: 		if(KErrNone==SymbianStreamFind(aStream2,&found))
sl@0: 			{
sl@0: 			if  (aStream==found)
sl@0: 				return KHR_BOOLEAN_TRUE;
sl@0: 			}
sl@0: 		return KHR_BOOLEAN_FALSE;
sl@0: 		}
sl@0: 	return KHR_BOOLEAN_FALSE;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void
sl@0: SymbianStreamProcessNotifications(SymbianStreamType aStream, 
sl@0:                                   khronos_int32_t aEvent, 
sl@0:                                   khronos_int32_t aScreenNumber,
sl@0:                                   khronos_int32_t aSerialNumber,
sl@0:                                   khronos_int32_t* aReturnMask)
sl@0:     {
sl@0:     CSurfaceStream* stream = CSurfaceStream::FromHandle(aStream);
sl@0:     if (stream)
sl@0:         {
sl@0:         stream->ProcessNotifications(aEvent, aScreenNumber, CSurfaceStream::EDefaultOperation, aSerialNumber, aReturnMask);
sl@0:         }
sl@0:     }
sl@0: 
sl@0: EXPORT_C void
sl@0: SymbianStreamCheckVisible(SymbianStreamType aStream, 
sl@0:                           khronos_int32_t aEvent, 
sl@0:                           khronos_int32_t aScreenNumber,
sl@0:                           khronos_int32_t aSerialNumber)
sl@0:     {
sl@0:     CSurfaceStream* stream = CSurfaceStream::FromHandle(aStream);
sl@0:     if (stream)
sl@0:         {
sl@0:         stream->ProcessNotifications(aEvent, aScreenNumber, CSurfaceStream::ECheckVisibleOperation, aSerialNumber, NULL);
sl@0:         }
sl@0:     }
sl@0: 
sl@0: EXPORT_C TErrCode 
sl@0: SymbianStreamAddExtendedObserver(SymbianStreamType aStream, 
sl@0:                                 SymbianStreamCallback aObserver, 
sl@0:                                 void* aData, 
sl@0:                                 khronos_int32_t aScreenNumber, 
sl@0:                                 SymbianStreamEventBits aEvents)
sl@0:     {
sl@0:     CSurfaceStream* stream=CSurfaceStream::FromHandle(aStream);
sl@0:     if (stream && aObserver)
sl@0:         {
sl@0:         TInt ret = KErrNone;
sl@0:         if (!((ret = stream->AddObserver(aObserver, aEvents, aScreenNumber, aData)) == KErrNone) || aEvents != ESOWF_EventUpdated)
sl@0:             {
sl@0:             return ret;
sl@0:             }
sl@0:         if (!((ret = stream->AddObserver(NULL, ESOWF_EventAvailable, aScreenNumber, aData)) == KErrNone))
sl@0:             {
sl@0:             return ret;
sl@0:             }
sl@0:         if (!((ret = stream->AddObserver(NULL, ESOWF_EventDisplayed, aScreenNumber, aData)) == KErrNone))
sl@0:             {
sl@0:             return ret;
sl@0:             }
sl@0:         ret = stream->AddObserver(NULL, ESOWF_EventDisplayedX, aScreenNumber, aData);
sl@0:         return ret;
sl@0:         }
sl@0:     else
sl@0:         {
sl@0:         return KErrArgument;
sl@0:         }
sl@0:     }
sl@0: 
sl@0: 
sl@0: 
sl@0: EXPORT_C void
sl@0: SymbianStreamSetFlipState(SymbianStreamType aStream, SymOwfBool aFlip)
sl@0:     {
sl@0:     CSurfaceStream* stream = CSurfaceStream::FromHandle(aStream);
sl@0:     if (stream)
sl@0:         {
sl@0:         stream->SetFlipState(aFlip);
sl@0:         }
sl@0:     }
sl@0: 
sl@0: EXPORT_C TErrCode
sl@0: SymbianStreamGetChunkHandle(SymbianStreamType aStream, TInt* aHandle)
sl@0:     {
sl@0:     CSurfaceStream* stream = CSurfaceStream::FromHandle(aStream);
sl@0:     if (stream && aHandle)
sl@0:         {
sl@0:         *aHandle = stream->GetChunkHandle();
sl@0:         return KErrNone;
sl@0:         }
sl@0:     return KErrArgument;
sl@0:     }
sl@0: 
sl@0: }   //extern "C" helps fix and verify linkage