ddhinit.cpp

IMX31开发板

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to use
// this source code. For a copy of the EULA, please see the LICENSE.RTF on your
// install media.
//
//------------------------------------------------------------------------------
//
//  Copyright (C) 2005-2006, Freescale Semiconductor, Inc. All Rights Reserved.
//  THIS SOURCE CODE, AND ITS USE AND DISTRIBUTION, IS SUBJECT TO THE TERMS
//  AND CONDITIONS OF THE APPLICABLE LICENSE AGREEMENT
//
//------------------------------------------------------------------------------

#ifndef PLAT_WPC
#ifndef PLAT_SMARTPHONE
#include "precomp.h"

// Misc function prototypes
EXTERN_C BOOL mmHALInit( LPDDHALINFO lpddhi, BOOL reset, DWORD modeidx );


EXTERN_C BOOL WINAPI HALInit(
	LPDDHALINFO lpddhi,
	BOOL reset,
	DWORD modeidx )
{
	//SCODE sc = S_OK;

	DEBUGENTER(mmHALInit);

	if( !g_pGPE )	// in case this is called more than once...
	{
		DEBUGMSG( GPE_ZONE_INIT,(TEXT("DDHAL_IF calling GetGPE()\r\n")));
		g_pGPE = (DDGPE*)GetGPE();
		// If GetGPE allocation failed, return.
		if (!g_pGPE)
		{
			RETAILMSG(1, (TEXT("HALInit: GPE allocation failed.\r\n")));
			return(FALSE);
		}

		DEBUGMSG( GPE_ZONE_INIT,(TEXT("GetGPE() returned g_pGPE=0x%08x\r\n"), g_pGPE));

		// Video memory info:
		g_pDDrawPrimarySurface = (DDGPESurf*)(g_pGPE->PrimarySurface());
		DEBUGMSG( GPE_ZONE_INIT,(TEXT("g_pDDrawPrimarySurface: 0x%08x\r\n"), g_pDDrawPrimarySurface));
	}
/*
	// If GPE is currently rotated, don't allow DDraw to use the driver.
	if (g_pGPE->IsRotate())
	{
		RETAILMSG(1, (TEXT("HALInit: GPE is rotated.\r\n")));
		return(FALSE);
	}
*/
	// Initialize the hardware and the callbacks
	buildDDHALInfo(lpddhi, modeidx);

	DEBUGLEAVE(mmHALInit);

    return TRUE;
}


EXTERN_C BOOL UpdateHALInit(
	LPDDRAWI_DIRECTDRAW_GBL lpDD,           // driver struct
	DWORD modeidx )
{
    DDHALINFO   ddhalinfo;

	DEBUGENTER(UpdateHALInit);

	memset(&ddhalinfo, 0, sizeof(ddhalinfo));
	ddhalinfo.dwSize = sizeof(ddhalinfo);

	buildDDHALInfo(&ddhalinfo, modeidx);

	lpDD->vmiData = ddhalinfo.vmiData;
	lpDD->dwMonitorFrequency = ddhalinfo.dwMonitorFrequency;
	lpDD->ddCaps = ddhalinfo.ddCaps;

	DEBUGLEAVE(UpdateHALInit);
	return TRUE;
}

#endif // PLAT_SMARTPHONE
#endif // PLAT_WPC