/* DirectMusicLoader Main
 *
 * Copyright (C) 2003-2004 Rok Mandeljc
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <stdarg.h>

#define COBJMACROS

#include "windef.h"
#include "winbase.h"
#include "winnt.h"
#include "wingdi.h"
#include "winuser.h"
#include "winreg.h"
#include "objbase.h"
#include "rpcproxy.h"
#include "initguid.h"
#include "dmusici.h"

#include "dmloader_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(dmloader);

LONG module_ref = 0;

typedef struct {
    IClassFactory IClassFactory_iface;
    HRESULT WINAPI (*fnCreateInstance)(REFIID riid, void **ppv);
} IClassFactoryImpl;

/******************************************************************
 *      IClassFactory implementation
 */
static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
{
    return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
}

static HRESULT WINAPI ClassFactory_QueryInterface(IClassFactory *iface, REFIID riid, void **ppv)
{
    if (ppv == NULL)
        return E_POINTER;

    if (IsEqualGUID(&IID_IUnknown, riid))
        TRACE("(%p)->(IID_IUnknown %p)\n", iface, ppv);
    else if (IsEqualGUID(&IID_IClassFactory, riid))
        TRACE("(%p)->(IID_IClassFactory %p)\n", iface, ppv);
    else {
        FIXME("(%p)->(%s %p)\n", iface, debugstr_guid(riid), ppv);
        *ppv = NULL;
        return E_NOINTERFACE;
}

    *ppv = iface;
    IClassFactory_AddRef(iface);
    return S_OK;
}

static ULONG WINAPI ClassFactory_AddRef(IClassFactory *iface)
{
    lock_module();

    return 2; /* non-heap based object */
}

static ULONG WINAPI ClassFactory_Release(IClassFactory *iface)
{
    unlock_module();

    return 1; /* non-heap based object */
}

static HRESULT WINAPI ClassFactory_CreateInstance(IClassFactory *iface, IUnknown *pUnkOuter,
    REFIID riid, void **ret_iface)
{
    IClassFactoryImpl *This = impl_from_IClassFactory(iface);

    TRACE ("(%s, %p)\n", debugstr_dmguid(riid), ret_iface);

    if (pUnkOuter) {
        *ret_iface = NULL;
        return CLASS_E_NOAGGREGATION;
    }

    return This->fnCreateInstance(riid, ret_iface);
}

static HRESULT WINAPI ClassFactory_LockServer(IClassFactory *iface, BOOL dolock)
{
    TRACE("(%d)\n", dolock);

    if (dolock)
        lock_module();
    else
        unlock_module();

    return S_OK;
}

static const IClassFactoryVtbl classfactory_vtbl = {
    ClassFactory_QueryInterface,
    ClassFactory_AddRef,
    ClassFactory_Release,
    ClassFactory_CreateInstance,
    ClassFactory_LockServer
};

static IClassFactoryImpl dm_loader_CF = {{&classfactory_vtbl}, create_dmloader};
static IClassFactoryImpl dm_container_CF = {{&classfactory_vtbl}, create_dmcontainer};

/******************************************************************
 *		DllCanUnloadNow (DMLOADER.@)
 */
HRESULT WINAPI DllCanUnloadNow (void)
{
    TRACE("() ref=%ld\n", module_ref);

    return module_ref ? S_FALSE : S_OK;
}

/******************************************************************
 *		DllGetClassObject (DMLOADER.@)
 */
HRESULT WINAPI DllGetClassObject (REFCLSID rclsid, REFIID riid, LPVOID *ppv)
{
    TRACE("(%s, %s, %p)\n", debugstr_dmguid(rclsid), debugstr_dmguid(riid), ppv);
    if (IsEqualCLSID (rclsid, &CLSID_DirectMusicLoader) && IsEqualIID (riid, &IID_IClassFactory)) {
        IClassFactory_AddRef(&dm_loader_CF.IClassFactory_iface);
        *ppv = &dm_loader_CF.IClassFactory_iface;
        return S_OK;
    } else if (IsEqualCLSID (rclsid, &CLSID_DirectMusicContainer) && IsEqualIID (riid, &IID_IClassFactory)) {
        IClassFactory_AddRef(&dm_container_CF.IClassFactory_iface);
        *ppv = &dm_container_CF.IClassFactory_iface;
        return S_OK;
    }

    WARN(": no class found\n");
    return CLASS_E_CLASSNOTAVAILABLE;
}
