dlls/dmusic/download.c

   1 /* IDirectMusicDownload Implementation
   2  *
   3  * Copyright (C) 2003-2004 Rok Mandeljc
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "dmusic_private.h"
  21
  22 WINE_DEFAULT_DEBUG_CHANNEL(dmusic);
  23
  24 /* IDirectMusicDownloadImpl IUnknown part: */
  25 static HRESULT WINAPI IDirectMusicDownloadImpl_QueryInterface (LPDIRECTMUSICDOWNLOAD iface, REFIID riid, LPVOID *ppobj) {
  26         IDirectMusicDownloadImpl *This = (IDirectMusicDownloadImpl *)iface;
  27         TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ppobj);
  28
  29         if (IsEqualIID (riid, &IID_IUnknown)
  30                 || IsEqualIID (riid, &IID_IDirectMusicDownload)) {
  31                 IUnknown_AddRef(iface);
  32                 *ppobj = This;
  33                 return S_OK;
  34         }
  35         WARN("(%p, %s, %p): not found\n", This, debugstr_dmguid(riid), ppobj);
  36         return E_NOINTERFACE;
  37 }
  38
  39 static ULONG WINAPI IDirectMusicDownloadImpl_AddRef (LPDIRECTMUSICDOWNLOAD iface) {
  40         IDirectMusicDownloadImpl *This = (IDirectMusicDownloadImpl *)iface;
  41         ULONG refCount = InterlockedIncrement(&This->ref);
  42
  43         TRACE("(%p)->(ref before=%u)\n", This, refCount - 1);
  44
  45         DMUSIC_LockModule();
  46
  47         return refCount;
  48 }
  49
  50 static ULONG WINAPI IDirectMusicDownloadImpl_Release (LPDIRECTMUSICDOWNLOAD iface) {
  51         IDirectMusicDownloadImpl *This = (IDirectMusicDownloadImpl *)iface;
  52         ULONG refCount = InterlockedDecrement(&This->ref);
  53
  54         TRACE("(%p)->(ref before=%u)\n", This, refCount + 1);
  55
  56         if (!refCount) {
  57                 HeapFree(GetProcessHeap(), 0, This);
  58         }
  59
  60         DMUSIC_UnlockModule();
  61
  62         return refCount;
  63 }
  64
  65 /* IDirectMusicDownloadImpl IDirectMusicDownload part: */
  66 static HRESULT WINAPI IDirectMusicDownloadImpl_GetBuffer (LPDIRECTMUSICDOWNLOAD iface, void** ppvBuffer, DWORD* pdwSize) {
  67         IDirectMusicDownloadImpl *This = (IDirectMusicDownloadImpl *)iface;
  68         FIXME("(%p, %p, %p): stub\n", This, ppvBuffer, pdwSize);
  69         return S_OK;
  70 }
  71
  72 static const IDirectMusicDownloadVtbl DirectMusicDownload_Vtbl = {
  73         IDirectMusicDownloadImpl_QueryInterface,
  74         IDirectMusicDownloadImpl_AddRef,
  75         IDirectMusicDownloadImpl_Release,
  76         IDirectMusicDownloadImpl_GetBuffer
  77 };
  78
  79 /* for ClassFactory */
  80 HRESULT DMUSIC_CreateDirectMusicDownloadImpl (LPCGUID lpcGUID, LPVOID* ppobj, LPUNKNOWN pUnkOuter) {
  81         IDirectMusicDownloadImpl* dmdl;
  82
  83         dmdl = HeapAlloc (GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusicDownloadImpl));
  84         if (NULL == dmdl) {
  85                 *ppobj = NULL;
  86                 return E_OUTOFMEMORY;
  87         }
  88         dmdl->lpVtbl = &DirectMusicDownload_Vtbl;
  89         dmdl->ref = 0; /* will be inited by QueryInterface */
  90
  91         return IDirectMusicDownloadImpl_QueryInterface ((LPDIRECTMUSICDOWNLOAD)dmdl, lpcGUID, ppobj);
  92 }