--- a/guestrendering/guestvideodriver/api/src/guestvideodriver.cpp Wed Sep 29 09:49:13 2010 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,264 +0,0 @@
-// Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
-// All rights reserved.
-// This component and the accompanying materials are made available
-// under the terms of "Eclipse Public License v1.0"
-// which accompanies this distribution, and is available
-// at the URL "http://www.eclipse.org/legal/epl-v10.html".
-//
-// Initial Contributors:
-// Nokia Corporation - initial contribution.
-//
-// Contributors:
-//
-// Description:
-// Guest Video Driver Implementation
-
-#include <e32cmn.h>
-#include <e32des8.h>
-#include <e32std.h>
-#include <e32debug.h>
-
-#include <graphics/guestvideodriver.h>
-#include <graphics/guestvideodriverprotocol.h>
-#include <graphics/guestvideodriverinterfaceconstants.h>
-
-#include "remotefunctioncall.h"
-#include "serializedfunctioncall.h"
-
-// tracing
-#ifdef _DEBUG
-#include <e32debug.h>
- #define UTIL_TRACE(fmt, args...) RDebug::Printf(fmt, ##args)
- #define DRVRPANIC_ASSERT(condition, panic) if (!(condition)) { DriverPanic(panic, #condition, __LINE__); }
- #define DRVRPANIC_ASSERT_DEBUG(condition, panic) if (!(condition)) { DriverPanic(panic, #condition, __LINE__); }
-#else
- #define UTIL_TRACE(fmt, args...)
- #define DRVRPANIC_ASSERT(condition, panic) if (!(condition)) { DriverPanic(panic, NULL, __LINE__); }
- #define DRVRPANIC_ASSERT_DEBUG(condition, panic)
-#endif
-
-//Max supported request size
-const TUint32 KMaxRequestSize( VVI_PARAMETERS_INPUT_MEMORY_SIZE );
-
-typedef enum
- {
- EDriverPanicSendBufferFailed=1,
- EDriverPanicInvalidOperationType,
- EDriverPanicOperationDataTooBig,
- EDriverPanicDriverAlreadyOpen,
- EDriverPanicCreateDriverChannelFailed,
- EDriverPanicCreateThreadLockFailed,
- EDriverPanicSendBufferFnDoesNotHaveThreadLock,
- EDriverPanicBufferCommandFnDoesNotHaveThreadLock,
- EDriverPanicDriverNotOpenForExecuteCommandFn,
- EDriverPanicRequestStatusErrorInExecuteCommandFn, // 10
- EDriverPanicBufferWriteFailed,
- } TDriverPanic;
-
-_LIT(KDriverPanicCategory, "Guest VidDrv");
-
-void DriverPanic(TDriverPanic aPanicCode, char* aCondition, TInt aLine)
- {
- UTIL_TRACE("Guest Video Driver Panic %d for failed Assert (%s), at guestvideodriver.cpp:%d", aPanicCode, aCondition, aLine);
-
- User::Panic(KDriverPanicCategory, aPanicCode);
- }
-
-
-// ============================ MEMBER FUNCTIONS ===============================
-
-// -----------------------------------------------------------------------------
-// RGuestVideoDriver::RGuestVideoDriver
-// -----------------------------------------------------------------------------
-//
-EXPORT_C RGuestVideoDriver::RGuestVideoDriver() : iIsOpen(EFalse), iProcessId(0)
- {
- }
-
-// -----------------------------------------------------------------------------
-// RGuestVideoDriver::Open
-// -----------------------------------------------------------------------------
-//
-EXPORT_C TInt RGuestVideoDriver::Open()
- {
- UTIL_TRACE("RGuestVideoDriver::Open start iProcessId=0x%x, iIsOpen=%d", iProcessId, iIsOpen);
- DRVRPANIC_ASSERT(iIsOpen == EFalse, EDriverPanicDriverAlreadyOpen);
- iProcessId = RProcess().Id();
- TInt error = iThreadLock.CreateLocal(EOwnerProcess);
- DRVRPANIC_ASSERT_DEBUG( error == KErrNone, EDriverPanicCreateThreadLockFailed);
- if (!error)
- {
- error = DoCreate(
- GuestVideoDriver::KDeviceName,
- TVersion( GuestVideoDriver::KMajorVer,
- GuestVideoDriver::KMinorVer,
- GuestVideoDriver::KBuildVer ),
- KNullUnit,
- NULL,
- NULL);
- DRVRPANIC_ASSERT_DEBUG( error == KErrNone, EDriverPanicCreateDriverChannelFailed);
- if (!error)
- {
- iIsOpen = ETrue;
- }
- }
- UTIL_TRACE("RGuestVideoDriver::Open end iProcessId=0x%x, error=%d", iProcessId, error);
- return error;
- }
-
-// -----------------------------------------------------------------------------
-// RGuestVideoDriver::~RGuestVideoDriver
-// -----------------------------------------------------------------------------
-//
-EXPORT_C RGuestVideoDriver::~RGuestVideoDriver()
- {
- UTIL_TRACE("RGuestVideoDriver::~RGuestVideoDriver iProcessId=0x%x", iProcessId);
- iThreadLock.Close();
- }
-
-// -----------------------------------------------------------------------------
-// RGuestVideoDriver::ExecuteCommand
-// Syncrhonous version with local buffering
-// -----------------------------------------------------------------------------
-//
-EXPORT_C void RGuestVideoDriver::ExecuteCommand(RemoteFunctionCallData& aRequestData)
- {
- DRVRPANIC_ASSERT(iIsOpen, EDriverPanicDriverNotOpenForExecuteCommandFn);
- DRVRPANIC_ASSERT( (RemoteFunctionCallData::EOpRequestWithReply == aRequestData.Header().iOpType) ||
- (RemoteFunctionCallData::EOpRequest == aRequestData.Header().iOpType),
- EDriverPanicInvalidOperationType);
-
- //Set thread and process id
- aRequestData.SetThreadInformation(iProcessId, RThread().Id());
- TBool sendNow = (RemoteFunctionCallData::EOpRequest != aRequestData.Header().iOpType);
- if (!sendNow)
- {
- iThreadLock.Wait();
- while (!BufferCommand(aRequestData))
- {
- // Flush any queued commands & retry
- if (iBuffer.Length())
- {
- SendBuffer();
- }
- else
- { // Too big for buffer
- sendNow = ETrue;
- break;
- }
- }
- iThreadLock.Signal();
- }
-
- if (sendNow)
- {
- // Maintain order of operations by flushing queue
- iThreadLock.Wait();
- if (iBuffer.Length())
- {
- SendBuffer();
- }
- iThreadLock.Signal();
-
- TRequestStatus status;
- TPckg<RemoteFunctionCallData> data(aRequestData);
- DRVRPANIC_ASSERT(data().SerialisedLength() <= KMaxRequestSize, EDriverPanicOperationDataTooBig);
- UTIL_TRACE("RGuestVideoDriver::ExecuteCommand direct send, req length=%d", data().SerialisedLength());
- DoRequest(GuestVideoDriver::ERequestExecuteCommand, status, (TAny*)&data);
- User::WaitForRequest(status);
- // status <> 0 if write of reply data failed
- DRVRPANIC_ASSERT_DEBUG(status.Int() == KErrNone, EDriverPanicRequestStatusErrorInExecuteCommandFn);
- }
- }
-
-// Flush video Command buffer
-EXPORT_C void RGuestVideoDriver::Flush()
- {
- iThreadLock.Wait();
- if (iIsOpen && iBuffer.Length())
- {
- SendBuffer();
- }
- iThreadLock.Signal();
- }
-
-
-// -----------------------------------------------------------------------------
-// RGuestVideoDriver::BufferCommand
-// -----------------------------------------------------------------------------
-//
-TBool RGuestVideoDriver::BufferCommand( RemoteFunctionCallData& aRequestData )
- {
- DRVRPANIC_ASSERT_DEBUG(iThreadLock.IsHeld(), EDriverPanicBufferCommandFnDoesNotHaveThreadLock);
- TBool result = EFalse;
- SerializedFunctionCall data( aRequestData );
-
- const TUint32 len = aRequestData.SerialisedLength();
- const TInt alignmentAdjIndex( RemoteFunctionCallData::AlignIndex( iBuffer.Length(), 4 ) );
-
- if ( (alignmentAdjIndex + len) < iBuffer.MaxLength() )
- {
- //There is enough space left on local buffer
- iBuffer.SetLength( alignmentAdjIndex + len );
- TPtrC8 serialisedDataPtr = iBuffer.Right( len );
- TInt wlen = data.WriteToBuffer( const_cast<TUint8*>(serialisedDataPtr.Ptr()), len, 0 );
- DRVRPANIC_ASSERT(wlen == len, EDriverPanicBufferWriteFailed);
- result = ETrue;
- }
-
- UTIL_TRACE("RGuestVideoDriver::BufferCommand length=%d, Req len=%d, result=%d",
- iBuffer.Length(), len, result);
- return result;
- }
-
-// -----------------------------------------------------------------------------
-// RGuestVideoDriver::MapToHWAddress
-// -----------------------------------------------------------------------------
-//
-EXPORT_C TInt RGuestVideoDriver::MapToHWAddress( const TInt aChunkHandle, TUint32& aHWAddress )
- {
- TPckgBuf<TInt> handle( aChunkHandle );
- TPckg<TUint32> address( aHWAddress );
- return DoControl( GuestVideoDriver::ERequestMapAddress, (TAny*)&handle, (TAny*)&address );
- }
-
-// -----------------------------------------------------------------------------
-// RGuestVideDriver::GetSurfaceBufferBaseAddress
-// -----------------------------------------------------------------------------
-//
-EXPORT_C TInt RGuestVideoDriver::GetSurfaceBufferBaseAddress( TUint32& aSurfaceBufferBaseAddress )
- {
- TPckg<TUint32> address( aSurfaceBufferBaseAddress );
- return DoControl( GuestVideoDriver::ERequestSurfaceBufferBaseAddress, (TAny*)&address );
- }
-
-// -----------------------------------------------------------------------------
-// RGuestVideoDriver::EglGetSgHandles
-// -----------------------------------------------------------------------------
-//
-EXPORT_C TInt RGuestVideoDriver::EglGetSgHandles( const TUint64 aId, TUint64 *aSgHandles )
- {
- TPckg<TUint64> sgId( aId );
- TPckg<TUint64> sgHandles( *aSgHandles );
- return DoControl( GuestVideoDriver::ERequestSgHandles, (TAny*)&sgId, (TAny*)&sgHandles );
- }
-
-// -----------------------------------------------------------------------------
-// RGuestVideoDriver::SendBuffer
-// -----------------------------------------------------------------------------
-//
-void RGuestVideoDriver::SendBuffer()
- {
- UTIL_TRACE("RGuestVideoDriver::SendBuffer length=%d", iBuffer.Length());
- DRVRPANIC_ASSERT_DEBUG(iThreadLock.IsHeld(), EDriverPanicSendBufferFnDoesNotHaveThreadLock);
- TRequestStatus status;
-
- DoRequest(GuestVideoDriver::ERequestLoadCommands, status, (TAny*)&iBuffer);
-
- User::WaitForRequest( status );
-
- iBuffer.Zero();
- UTIL_TRACE("RGuestVideoDriver::SendBuffer status=%d", status.Int());
- // Commands expecting a reply should never come through here, so status should always be KErrNone
- DRVRPANIC_ASSERT(status.Int() == KErrNone, EDriverPanicSendBufferFailed);
- }