services.c

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/*
 * PROJECT:     ReactOS
 * LICENSE:     GPL - See COPYING in the top level directory
 * PURPOSE:     Audio Service Plug and Play
 * COPYRIGHT:   Copyright 2009 Johannes Anderwald
 */
 
#include "audiosrv.h"
 
#define NDEBUG
#include <debug.h>
 
BOOL
WaitForService(
    SC_HANDLE hService,
    ULONG RetryCount)
{
    ULONG Index = 0;
    DWORD dwSize;
    SERVICE_STATUS_PROCESS Info;
 
    do
    {
        if (!QueryServiceStatusEx(hService, SC_STATUS_PROCESS_INFO, (LPBYTE)&Info, sizeof(SERVICE_STATUS_PROCESS), &dwSize))
        {
            DPRINT("QueryServiceStatusEx failed %x\n", GetLastError());
            break;
        }
 
        if (Info.dwCurrentState == SERVICE_RUNNING)
            return TRUE;
 
        Sleep(1000);
 
    } while (Index++ < RetryCount);
 
    DPRINT("Timeout while waiting for service to become ready %p\n", hService);
 
    return FALSE;
}
 
BOOL
StartAudioService(
    SC_HANDLE hSCManager,
    LPWSTR ServiceName,
    ULONG RetryCount)
{
    SC_HANDLE hService;
    BOOL ret;
 
    hService = OpenService(hSCManager, ServiceName, SERVICE_ALL_ACCESS);
    if (!hService)
    {
        DPRINT("Failed to open service %S %x\n", ServiceName, GetLastError());
        return FALSE;
    }
 
    if (!StartService(hService, 0, NULL))
    {
        DPRINT("Failed to start service %S %x\n", ServiceName, GetLastError());
        CloseServiceHandle(hService);
        return FALSE;
    }
 
    ret = WaitForService(hService, RetryCount);
 
    CloseServiceHandle(hService);
    return ret;
}
 
BOOL
StartSystemAudioServices(VOID)
{
    SC_HANDLE hSCManager;
 
    DPRINT("Starting system audio services\n");
 
    hSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_CONNECT);
    if (!hSCManager)
    {
        DPRINT("Failed to open service manager %x\n", GetLastError());
        return FALSE;
    }
 
    DPRINT("Starting sysaudio service\n");
    StartAudioService(hSCManager, L"sysaudio", 20);
    DPRINT("Starting wdmaud service\n");
    StartAudioService(hSCManager, L"wdmaud", 20);
 
    CloseServiceHandle(hSCManager);
    return TRUE;
}