download.c

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/* IDirectMusicDownload Implementation
 *
 * 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 "dmusic_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(dmusic);

/* IDirectMusicDownloadImpl IUnknown part: */
static HRESULT WINAPI IDirectMusicDownloadImpl_QueryInterface (LPDIRECTMUSICDOWNLOAD iface, REFIID riid, LPVOID *ppobj) {
    IDirectMusicDownloadImpl *This = (IDirectMusicDownloadImpl *)iface;
    TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ppobj);

    if (IsEqualIID (riid, &IID_IUnknown) 
        || IsEqualIID (riid, &IID_IDirectMusicDownload)) {
        IUnknown_AddRef(iface);
        *ppobj = This;
        return S_OK;
    }
    WARN("(%p, %s, %p): not found\n", This, debugstr_dmguid(riid), ppobj);
    return E_NOINTERFACE;
}

static ULONG WINAPI IDirectMusicDownloadImpl_AddRef (LPDIRECTMUSICDOWNLOAD iface) {
    IDirectMusicDownloadImpl *This = (IDirectMusicDownloadImpl *)iface;
    ULONG refCount = InterlockedIncrement(&This->ref);

    TRACE("(%p)->(ref before=%u)\n", This, refCount - 1);

    DMUSIC_LockModule();

    return refCount;
}

static ULONG WINAPI IDirectMusicDownloadImpl_Release (LPDIRECTMUSICDOWNLOAD iface) {
    IDirectMusicDownloadImpl *This = (IDirectMusicDownloadImpl *)iface;
    ULONG refCount = InterlockedDecrement(&This->ref);

    TRACE("(%p)->(ref before=%u)\n", This, refCount + 1);

    if (!refCount) {
        HeapFree(GetProcessHeap(), 0, This);
    }

    DMUSIC_UnlockModule();
    
    return refCount;
}

/* IDirectMusicDownloadImpl IDirectMusicDownload part: */
static HRESULT WINAPI IDirectMusicDownloadImpl_GetBuffer (LPDIRECTMUSICDOWNLOAD iface, void** ppvBuffer, DWORD* pdwSize) {
    IDirectMusicDownloadImpl *This = (IDirectMusicDownloadImpl *)iface;
    FIXME("(%p, %p, %p): stub\n", This, ppvBuffer, pdwSize);
    return S_OK;
}

static const IDirectMusicDownloadVtbl DirectMusicDownload_Vtbl = {
    IDirectMusicDownloadImpl_QueryInterface,
    IDirectMusicDownloadImpl_AddRef,
    IDirectMusicDownloadImpl_Release,
    IDirectMusicDownloadImpl_GetBuffer
};

/* for ClassFactory */
HRESULT WINAPI DMUSIC_CreateDirectMusicDownloadImpl (LPCGUID lpcGUID, LPVOID* ppobj, LPUNKNOWN pUnkOuter) {
    IDirectMusicDownloadImpl* dmdl;
    
    dmdl = HeapAlloc (GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusicDownloadImpl));
    if (NULL == dmdl) {
        *ppobj = NULL;
        return E_OUTOFMEMORY;
    }
    dmdl->lpVtbl = &DirectMusicDownload_Vtbl;
    dmdl->ref = 0; /* will be inited by QueryInterface */
    
    return IDirectMusicDownloadImpl_QueryInterface ((LPDIRECTMUSICDOWNLOAD)dmdl, lpcGUID, ppobj);
}