// 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;

}