// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of the License "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:

 // T_VIDEOMEMORY.CPP

 // Overview:

 // Test the video driver kernel extension that provides chunk handle to access video memory. 

 // This executable is a second process that is started by the main t_videomemory test process.

 // API Information:

 // HAL, UserSvr

 // Details:

 // - Check that we can get a chunk and that we can read/write the memory belonging to that chunk.

 // - When this process exits, the main process will check that the value has changed in it's copy 

 // - of the chunk.  

 // Platforms/Drives/Compatibility:

 // All.

 // Assumptions/Requirement/Pre-requisites:

 // Failures and causes:

 // Base Port information:

 // 

 //

 #include <e32test.h>

 #include <videodriver.h>

 #include <hal.h>

 #include <e32svr.h>

 #include <dispchannel.h>

 #include "t_videomemory.h"

 LOCAL_D RTest test(_L("T_VIDEOMEMPROCESS"));

 #ifndef __WINS__

 #define DUMP(x) test.Printf(_L(#x"= %d =0x%08x\n"), x, x)

 #endif

 LOCAL_C TInt RunTestsForScreen(TInt aScreenID)

 	{

 	TInt ret = KErrNone;

 	test.Next(_L("Checking Display Handle"));

 	// Second basic test. Use the HAL to fetch a handle

 	// to the display memory. 

 	// Check that the handle is not zero. 

 	// Get the base-address of the chunk. 

 	// Write this base address with a new value.

 	// Read with the chunk base address to see that teh new value is there. 

 	// Read the memory address from the above test and check that it changed 

 	// to the new value.

 	// Note that the memory address from above test MAY NOT BE SET - so 

 	// check to see if it's non-zero first.

 	TInt handle = 0;

 	volatile TUint32 *pChunkBase = 0;

 	ret = HAL::Get(aScreenID, HALData::EDisplayMemoryHandle,handle);

 	test ((KErrNone == ret || KErrNotSupported == ret));

 	if (KErrNone == ret)

 		{

 		test(0 != handle);

 		RChunk chunk;

 		ret = chunk.SetReturnedHandle(handle);

 	    test(KErrNone == ret);

 		if (KErrNone != ret)

 			{

 			return ret;

 			}

 		pChunkBase = reinterpret_cast<TUint32 *>(chunk.Base());

 		test.Printf(_L("Display Memory Address = %08x\n"), reinterpret_cast<TInt>(pChunkBase));

 		// Now check that we can read and write the memory that the chunk holds:

 		// First check that it contains what we expect. 

 		test(KTestValue3 == *pChunkBase);

 		// Now check that we can CHANGE it. 

 		*pChunkBase = KTestValue4;

 		test(KTestValue4 == *pChunkBase);

 		}

 	return KErrNone;

 	}

 GLDEF_C TInt E32Main()

 //

 //

     {

 	test.Title();

 #if defined(__EPOC32__) && defined(__CPU_X86)

 	test.Printf(_L("Doesn't run on X86\n"));

 #else

 	TInt ret = KErrNone;

 	TInt screen;

 	User::GetTIntParameter(12, screen);

 	test.Start(_L("Testing Video Memory HAL interfaces (second process)"));

 	//Hack: Only use screen 0 for now - use passed argument(s) later on. 

 	ret = RunTestsForScreen(screen);

 	test((ret == KErrNone));

 #endif

 	return KErrNone;

 }