Source code of Windows XP (NT5)
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/*==========================================================================
*
* Copyright (C) 1995 - 1997 Microsoft Corporation. All Rights Reserved.
*
* File: dpsp.c
* Content: sample direct play service provider, based on winsock
* History:
* Date By Reason
* ==== == ======
* 10/31/96 andyco created it. happy holloween!
***************************************************************************/
#include "dpsp.h"
// get the player data for pod. extract ip addr. use netmeeting to place call.
HRESULT WINAPI SP_OpenVoice(LPDPSP_OPENVOICEDATA pod)
{
SOCKADDR_IN * pin;
INT iAddrLen = sizeof(SOCKADDR_IN);
HRESULT hr=DP_OK;
DWORD dwSize = sizeof(SPPLAYERDATA);
LPSPPLAYERDATA ppdTo;
DWORD dwDataSize = sizeof(GLOBALDATA);
LPGLOBALDATA pgd;
// get the global data
hr =pod->lpISP->lpVtbl->GetSPData(pod->lpISP,(LPVOID *)&pgd,&dwDataSize,DPGET_LOCAL);
if (FAILED(hr) || (dwDataSize != sizeof(GLOBALDATA) ))
{
DPF_ERR("couldn't get SP data from DirectPlay - failing");
return E_FAIL;
}
// tcp only!
if (pgd->AddressFamily != AF_INET)
{
DPF_ERR("voice only supported for TCP / IP");
ASSERT(FALSE);
return E_FAIL;
}
// get to address
hr = pod->lpISP->lpVtbl->GetSPPlayerData(pod->lpISP,pod->idTo,&ppdTo,&dwSize,DPGET_REMOTE);
if (FAILED(hr))
{
ASSERT(FALSE);
return hr;
}
pin = (SOCKADDR_IN *) DGRAM_PSOCKADDR(ppdTo);
DPF(0,"calling hostname = %s\n",inet_ntoa(pin->sin_addr));
hr = OpenVoice(inet_ntoa(pin->sin_addr));
if (FAILED(hr))
{
DPF(0,"open voice failed - hr = 0x%08lx\n",hr);
}
else
{
gbVoiceOpen = TRUE;
}
return hr;
} // SP_OpenVoice
HRESULT WINAPI SP_CloseVoice(LPDPSP_CLOSEVOICEDATA pod)
{
HRESULT hr;
hr = CloseVoice();
if (FAILED(hr))
{
DPF(0,"close voice failed - hr = 0x%08lx\n",hr);
}
// even if it failed, give up on this call...
gbVoiceOpen = FALSE;
return hr;
} // SP_CloseVoice