256 lines
8.1 KiB
C
256 lines
8.1 KiB
C
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/* File: audiosrvc.c */
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/* Copyright (c) 2000-2001 Microsoft Corporation */
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#define UNICODE
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#define _UNICODE
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#include "winmmi.h"
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#include "audiosrv.h"
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#define RPC_CALL_START RpcTryExcept {
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#define RPC_CALL_END_(status) } RpcExcept(1) { status = RpcExceptionCode(); } RpcEndExcept
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#define RPC_CALL_END } RpcExcept(1) { RpcExceptionCode(); } RpcEndExcept
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void __RPC_FAR * __RPC_USER MIDL_user_allocate(size_t cb)
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{
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return HeapAlloc(hHeap, HEAP_ZERO_MEMORY, cb);
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}
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void __RPC_USER MIDL_user_free( void __RPC_FAR * pv)
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{
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HeapFree(hHeap, 0, pv);
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}
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LONG AudioSrvBinding(void)
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{
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RPC_STATUS status;
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PTSTR pszUuid = NULL;
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PTSTR pszProtocolSequence = TEXT("ncalrpc");
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PTSTR pszNetworkAddress = NULL;
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PTSTR pszEndpoint = TEXT("AudioSrv");
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PTSTR pszOptions = NULL;
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PTSTR pszStringBinding = NULL;
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PTSTR pszString = NULL;
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// dprintf(("AudioSrvBinding"));
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WinAssert(NULL == AudioSrv_IfHandle);
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status = RpcStringBindingCompose(pszUuid,
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pszProtocolSequence,
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pszNetworkAddress,
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pszEndpoint,
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pszOptions,
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&pszStringBinding);
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if (RPC_S_OK == status)
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{
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status = RpcBindingFromStringBinding(pszStringBinding, &AudioSrv_IfHandle);
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RpcStringFree(&pszStringBinding);
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}
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if (RPC_S_OK != status) dprintf(("AudioSrvBinding: returning %d", status));
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return status;
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}
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void AudioSrvBindingFree(void)
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{
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RPC_STATUS status;
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// dprintf(("AudioSrvBindingFree"));
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status = AudioSrv_IfHandle ? RpcBindingFree(&AudioSrv_IfHandle) : RPC_S_OK;
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if (RPC_S_OK == status) WinAssert(NULL == AudioSrv_IfHandle);
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if (RPC_S_OK != status) dprintf(("AudioSrvBindingFree: RpcBindingFree returned %d", status));
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}
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BOOL winmmWaitForService(void)
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{
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static BOOL fWaited = FALSE;
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static BOOL fStarted = FALSE;
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const LONG Timeout = 120000;
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SC_HANDLE schScm = NULL;
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SC_HANDLE schAudioSrv = NULL;
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if (fWaited) return fStarted;
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schScm = OpenSCManager(NULL, NULL, SC_MANAGER_CONNECT);
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if (!schScm)
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{
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DWORD dw = GetLastError();
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dprintf(("winmmWaitForService: could not OpenSCManager, LastError=%d", dw));
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return FALSE;
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}
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schAudioSrv = OpenService(schScm, TEXT("AudioSrv"), SERVICE_QUERY_CONFIG | SERVICE_QUERY_STATUS);
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if (schAudioSrv)
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{
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int cWaits = 0;
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while (!fWaited) {
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SERVICE_STATUS ServiceStatus;
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if (QueryServiceStatus(schAudioSrv, &ServiceStatus))
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{
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if ( (ServiceStatus.dwCurrentState == SERVICE_RUNNING) ||
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(ServiceStatus.dwCurrentState == SERVICE_CONTINUE_PENDING) ||
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(ServiceStatus.dwCurrentState == SERVICE_PAUSE_PENDING) ||
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(ServiceStatus.dwCurrentState == SERVICE_PAUSED) )
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{
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fStarted = TRUE;
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fWaited = TRUE;
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} else if (ServiceStatus.dwCurrentState == SERVICE_STOPPED &&
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ServiceStatus.dwWin32ExitCode == ERROR_SERVICE_NEVER_STARTED)
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{
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if (cWaits == 0)
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{
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DWORD cbNeeded;
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// Check that the service StartType is set such that
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// it will start
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if (QueryServiceConfig(schAudioSrv, NULL, 0, &cbNeeded) || ERROR_INSUFFICIENT_BUFFER == GetLastError())
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{
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QUERY_SERVICE_CONFIG *ServiceConfig;
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ServiceConfig = HeapAlloc(hHeap, 0, cbNeeded);
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if (ServiceConfig) {
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if (QueryServiceConfig(schAudioSrv, ServiceConfig, cbNeeded, &cbNeeded)) {
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if (ServiceConfig->dwStartType != SERVICE_AUTO_START) {
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fWaited = TRUE;
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}
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} else {
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DWORD dwLastError = GetLastError();
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dprintf(("winmmWaitForService: QueryServiceConfig failed LastError=%d", dwLastError));
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fWaited = TRUE;
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}
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HeapFree(hHeap, 0, ServiceConfig);
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} else {
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dprintf(("winmmWaitForService: HeapAlloc failed"));
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}
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} else {
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DWORD dwLastError = GetLastError();
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dprintf(("winmmWaitForService: QueryServiceConfig failed LastError=%d", dwLastError));
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fWaited = TRUE;
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}
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}
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} else if (ServiceStatus.dwCurrentState != SERVICE_START_PENDING)
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{
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// Unfamiliar dwCurrentState, or was started and then stopped
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fWaited = TRUE;
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}
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} else {
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DWORD dwLastError = GetLastError();
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dprintf(("winmmWaitForService: QueryServiceStatus failed LastError=%d", dwLastError));
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fWaited = TRUE;
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}
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if (!fWaited && ((cWaits * 2000) > Timeout))
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{
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dprintf(("winmmWaitForService timed out. Could be design problem. Open a bug!"));
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WinAssert(FALSE);
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fWaited = TRUE;
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}
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if (!fWaited) {
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Sleep(2000);
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cWaits++;
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}
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}
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CloseServiceHandle(schAudioSrv);
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} else {
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DWORD dwLastError = GetLastError();
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dprintf(("winmmWaitForService: OpenService failed LastError=%d", dwLastError));
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}
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CloseServiceHandle(schScm);
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return fStarted;
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}
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LONG winmmRegisterSessionNotificationEvent(HANDLE hEvent, PHANDLE phRegNotify)
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{
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LONG lresult;
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winmmWaitForService();
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RPC_CALL_START;
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lresult = s_winmmRegisterSessionNotificationEvent(GetCurrentProcessId(), (RHANDLE)hEvent, (PHANDLE_SESSIONNOTIFICATION)phRegNotify);
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RPC_CALL_END_(lresult);
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return lresult;
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}
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LONG winmmUnregisterSessionNotification(HANDLE hRegNotify)
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{
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LONG lresult;
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winmmWaitForService();
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RPC_CALL_START;
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// if (!AudioSrv_IfHandle) dprintf(("winmmUnregisterSessionNotification : warning: called with AudioSrv_IfHandle == NULL"));
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// If we have a binding handle, then let's call the server to close this
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// context handle otherwise we need to call RpcSsDestroyClientContext to
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// destroy it without contacting the server
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if (AudioSrv_IfHandle)
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{
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lresult = s_winmmUnregisterSessionNotification((PHANDLE_SESSIONNOTIFICATION)&hRegNotify);
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}
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else
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{
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RpcSsDestroyClientContext(&hRegNotify);
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lresult = RPC_S_OK;
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}
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RPC_CALL_END_(lresult);
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return lresult;
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}
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LONG winmmSessionConnectState(PINT ConnectState)
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{
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LONG lresult;
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winmmWaitForService();
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RPC_CALL_START;
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lresult = s_winmmSessionConnectState(GetCurrentProcessId(), ConnectState);
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RPC_CALL_END_(lresult);
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return lresult;
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}
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LONG wdmDriverOpenDrvRegKey(IN PCTSTR DeviceInterface, IN REGSAM samDesired, OUT HKEY *phkey)
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{
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LONG lresult;
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winmmWaitForService();
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RPC_CALL_START;
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lresult = s_wdmDriverOpenDrvRegKey(GetCurrentProcessId(), DeviceInterface, samDesired, (RHANDLE*)phkey);
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RPC_CALL_END_(lresult);
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return lresult;
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}
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void winmmAdvisePreferredDeviceChange(void)
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{
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winmmWaitForService();
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RPC_CALL_START;
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s_winmmAdvisePreferredDeviceChange();
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RPC_CALL_END;
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return;
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}
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LONG winmmGetPnpInfo(OUT LONG *pcbPnpInfo, OUT PMMPNPINFO *ppPnpInfo)
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{
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LONG cbPnpInfo = 0;
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BYTE *pPnpInfo = NULL;
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LONG lresult;
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winmmWaitForService();
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RPC_CALL_START;
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lresult = s_winmmGetPnpInfo(&cbPnpInfo, &pPnpInfo);
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RPC_CALL_END_(lresult);
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if (ERROR_SUCCESS == lresult)
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{
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*pcbPnpInfo = cbPnpInfo;
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*ppPnpInfo = (PMMPNPINFO)pPnpInfo;
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}
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return lresult;
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}
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