windows-server-2003/multimedia/directx/dxvb/dx7vb/dpenumconnectionsobj.cpp

//+-------------------------------------------------------------------------
//
//  Microsoft Windows
//
//  Copyright (C) Microsoft Corporation, 1998 - 1999
//
//  File:       dpenumconnectionsobj.cpp
//
//--------------------------------------------------------------------------


#include "stdafx.h"
#include "Direct.h"
#include "dms.h"
#include "DPEnumConnectionsObj.h"
#include "DPAddressObj.h"

extern  BSTR DPLGUIDtoBSTR(LPGUID pGuid);
extern  HRESULT DPLBSTRtoPPGUID(LPGUID *,BSTR);


/////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////
extern "C" BOOL FAR PASCAL myEnumConnectionsCallback(
	LPCGUID lpguidSP,
	LPVOID lpConnection,
	DWORD dwConnectionSize,
	LPCDPNAME lpName,
	DWORD dwFlags,
	LPVOID lpArg
	){

	
	DPF(1,"Entered objEnumConnectionsCallback\r\n");

	
	C_dxj_DPEnumConnectionsObject *pObj=(C_dxj_DPEnumConnectionsObject*)lpArg;
	if (pObj==NULL) return TRUE;

	if (pObj->m_nCount >= pObj->m_nMax) 
	{
		pObj->m_nMax += 10;
		if (pObj->m_pList)
		{
			void* tmp = realloc(pObj->m_pList,sizeof(DPConnection)* pObj->m_nMax);
			if (tmp)
				pObj->m_pList=(DPConnection*)tmp;
			else
				return FALSE;
		}
		else
			pObj->m_pList=(DPConnection*)malloc(sizeof(DPConnection)* pObj->m_nMax);

		if (pObj->m_pList==NULL) 
		{
			pObj->m_bProblem=TRUE;
			return FALSE;
		}

		if (pObj->m_pList2)
			pObj->m_pList2=(I_dxj_DPAddress**)realloc(pObj->m_pList,sizeof(void*) * pObj->m_nMax);
		else
			pObj->m_pList2=(I_dxj_DPAddress**)malloc(sizeof(void*) * pObj->m_nMax);

		if (pObj->m_pList2==NULL) 
		{
			pObj->m_bProblem=TRUE;
			return FALSE;
		}

	}
	
	ZeroMemory(&(pObj->m_pList[pObj->m_nCount]),sizeof(DPConnection));
	
	pObj->m_pList2[pObj->m_nCount]=NULL;


	I_dxj_DPAddress *address=NULL;
	
	if (lpName->lpszShortName)
		pObj->m_pList[pObj->m_nCount].strShortName = SysAllocString(lpName->lpszShortName);
	if (lpName->lpszLongName)
		pObj->m_pList[pObj->m_nCount].strLongName = SysAllocString(lpName->lpszLongName);
	if (lpguidSP)
		pObj->m_pList[pObj->m_nCount].strGuid = DPLGUIDtoBSTR((LPGUID)lpguidSP);
	
	pObj->m_pList[pObj->m_nCount].lFlags=(DWORD)dwFlags;

	//internal create does the addref.
	#pragma message ("make sure InternalCreate does addref")

	INTERNAL_CREATE_STRUCT(_dxj_DPAddress,(&address));		
	pObj->m_pList2[pObj->m_nCount]=address;

	if (address) address->setAddress((long)PtrToLong(lpConnection),(long)dwConnectionSize);	//bugbug SUNDOWN	
	pObj->m_nCount++;
	
	return TRUE;
}

/////////////////////////////////////////////////////////////////////////////

C_dxj_DPEnumConnectionsObject::C_dxj_DPEnumConnectionsObject()
{	
	m_nMax=0;
	m_pList=NULL;
	m_pList2=NULL;
	m_nCount=0;
	m_bProblem=FALSE;
}
C_dxj_DPEnumConnectionsObject::~C_dxj_DPEnumConnectionsObject()
{
	//empty list
	if (m_pList){
		for (int i=0;i<m_nCount;i++)
		{
			DPConnection *conn=&(m_pList[i]);
			if (conn->strShortName ) SysFreeString((BSTR)conn->strShortName);
			if (conn->strLongName) SysFreeString((BSTR)conn->strLongName);			
			if (conn->strGuid) SysFreeString((BSTR)conn->strGuid);			
		}
		free(m_pList);
	}
	if (m_pList2){
		for (int i=0;i<m_nCount;i++)
		{
			if (m_pList2[i]) m_pList2[i]->Release();
		}
		free(m_pList2);
	}

}

HRESULT C_dxj_DPEnumConnectionsObject::create(
		IDirectPlay3 * pdp,
		BSTR strGuid,
		long flags, I_dxj_DPEnumConnections **ppRet)
{
	HRESULT hr;
	C_dxj_DPEnumConnectionsObject *pNew=NULL;
	GUID g;
	LPGUID pguid=&g;

	hr=DPLBSTRtoPPGUID(&pguid,strGuid);
	if FAILED(hr) return hr;

	*ppRet=NULL;

	pNew= new CComObject<C_dxj_DPEnumConnectionsObject>;			
	if (!pNew) return E_OUTOFMEMORY;

	pNew->m_bProblem=FALSE;
	
	hr = pdp->EnumConnections(pguid,
						myEnumConnectionsCallback,
						pNew, (long)flags);

	if (pNew->m_bProblem) hr=E_OUTOFMEMORY;


	#pragma message ("make sure free on failure cleans up in enumerators on STrings and objects")
	if FAILED(hr) 
	{
		//free(pNew->m_pList);
		//pNew->m_pList=NULL;
		//destructor will clean up properly
		delete pNew;	
		return hr;
	}

	hr=pNew->QueryInterface(IID_I_dxj_DPEnumConnections,(void**)ppRet);
	return hr;
}

/* DEAD CODE
HRESULT C_dxj_DPEnumConnectionsObject::getItem( long index, DPConnection *info)
{
	if (m_pList==NULL) return E_FAIL;
	if (index < 0) return E_INVALIDARG;
	if (index >= m_nCount) return E_INVALIDARG;

	if (!info) return E_INVALIDARG;

	if (info->strGuid) SysFreeString((BSTR)info->strGuid);
	if (info->strShortName) SysFreeString((BSTR)info->strShortName);
	if (info->strLongName) SysFreeString((BSTR)info->strLongName);

	info->strGuid=SysAllocString(m_pList[index].strGuid);
	info->strShortName=SysAllocString(m_pList[index].strShortName);
	info->strLongName=SysAllocString(m_pList[index].strLongName);
	info->lFlags=m_pList[index].lFlags;
			


	return S_OK;
}
*/

HRESULT C_dxj_DPEnumConnectionsObject::getFlags( long index, long  *retV)
{
	if (m_pList==NULL) return E_FAIL;
	if (index < 1) return E_INVALIDARG;
	if (index > m_nCount) return E_INVALIDARG;
	*retV=m_pList[index-1].lFlags;
	return S_OK;
}
 
HRESULT C_dxj_DPEnumConnectionsObject::getGuid( long index, BSTR  *retV)
{
	if (m_pList==NULL) return E_FAIL;
	if (index < 1) return E_INVALIDARG;
	if (index > m_nCount) return E_INVALIDARG;
	*retV=SysAllocString(m_pList[index-1].strGuid);
	return S_OK;
}       

HRESULT C_dxj_DPEnumConnectionsObject::getName( long index, BSTR  *retV)
{
	if (m_pList==NULL) return E_FAIL;
	if (index < 1) return E_INVALIDARG;
	if (index > m_nCount) return E_INVALIDARG;
	*retV=SysAllocString(m_pList[index-1].strShortName);
	return S_OK;
}       

/*        
HRESULT C_dxj_DPEnumConnectionsObject::getLongName( long index, BSTR  *retV)
{
	if (m_pList==NULL) return E_FAIL;
	if (index < 1) return E_INVALIDARG;
	if (index > m_nCount) return E_INVALIDARG;
	*retV=SysAllocString(m_pList[index-1].strLongName);
	return S_OK;
}       
*/
HRESULT C_dxj_DPEnumConnectionsObject::getAddress(long index,I_dxj_DPAddress **ppret){
	if (m_pList2==NULL) return E_FAIL;
	if (index < 1) return E_INVALIDARG;
	if (index > m_nCount) return E_INVALIDARG;
	if (m_pList2[index-1]==NULL) return E_FAIL;
	HRESULT hr=m_pList2[index-1]->QueryInterface(IID_I_dxj_DPAddress,(void**)ppret);
	return hr;
}

HRESULT C_dxj_DPEnumConnectionsObject::getCount(long *retVal)
{
	*retVal=m_nCount;
	return S_OK;
}