dlls/dmusic/download.c

   1 /*
   2  * IDirectMusicDownload Implementation
   3  *
   4  * Copyright (C) 2003-2004 Rok Mandeljc
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "dmusic_private.h"
  22 #include "dmobject.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(dmusic);
  25
  26 static inline IDirectMusicDownloadImpl* impl_from_IDirectMusicDownload(IDirectMusicDownload *iface)
  27 {
  28     return CONTAINING_RECORD(iface, IDirectMusicDownloadImpl, IDirectMusicDownload_iface);
  29 }
  30
  31 /* IDirectMusicDownloadImpl IUnknown part: */
  32 static HRESULT WINAPI IDirectMusicDownloadImpl_QueryInterface(IDirectMusicDownload *iface, REFIID riid, void **ret_iface)
  33 {
  34     TRACE("(%p, %s, %p)\n", iface, debugstr_dmguid(riid), ret_iface);
  35
  36     if (IsEqualIID(riid, &IID_IUnknown) ||
  37         IsEqualIID(riid, &IID_IDirectMusicDownload))
  38     {
  39         IDirectMusicDownload_AddRef(iface);
  40         *ret_iface = iface;
  41         return S_OK;
  42     }
  43
  44     *ret_iface = NULL;
  45     WARN("(%p, %s, %p): not found\n", iface, debugstr_dmguid(riid), ret_iface);
  46     return E_NOINTERFACE;
  47 }
  48
  49 static ULONG WINAPI IDirectMusicDownloadImpl_AddRef(IDirectMusicDownload *iface)
  50 {
  51     IDirectMusicDownloadImpl *This = impl_from_IDirectMusicDownload(iface);
  52     ULONG ref = InterlockedIncrement(&This->ref);
  53
  54     TRACE("(%p): new ref = %lu\n", iface, ref);
  55
  56     return ref;
  57 }
  58
  59 static ULONG WINAPI IDirectMusicDownloadImpl_Release(IDirectMusicDownload *iface)
  60 {
  61     IDirectMusicDownloadImpl *This = impl_from_IDirectMusicDownload(iface);
  62     ULONG ref = InterlockedDecrement(&This->ref);
  63
  64     TRACE("(%p): new ref = %lu\n", iface, ref);
  65
  66     if (!ref) {
  67         HeapFree(GetProcessHeap(), 0, This);
  68         DMUSIC_UnlockModule();
  69     }
  70
  71     return ref;
  72 }
  73
  74 /* IDirectMusicDownloadImpl IDirectMusicDownload part: */
  75 static HRESULT WINAPI IDirectMusicDownloadImpl_GetBuffer(IDirectMusicDownload *iface, void **buffer, DWORD *size)
  76 {
  77     FIXME("(%p, %p, %p): stub\n", iface, buffer, size);
  78
  79     return S_OK;
  80 }
  81
  82 static const IDirectMusicDownloadVtbl DirectMusicDownload_Vtbl = {
  83     IDirectMusicDownloadImpl_QueryInterface,
  84     IDirectMusicDownloadImpl_AddRef,
  85     IDirectMusicDownloadImpl_Release,
  86     IDirectMusicDownloadImpl_GetBuffer
  87 };
  88
  89 /* for ClassFactory */
  90 HRESULT DMUSIC_CreateDirectMusicDownloadImpl(const GUID *guid, void **ret_iface, IUnknown *unk_outer)
  91 {
  92     IDirectMusicDownloadImpl *download;
  93
  94     download = HeapAlloc(GetProcessHeap(), 0, sizeof(*download));
  95     if (!download)
  96     {
  97         *ret_iface = NULL;
  98         return E_OUTOFMEMORY;
  99     }
 100
 101     download->IDirectMusicDownload_iface.lpVtbl = &DirectMusicDownload_Vtbl;
 102     download->ref = 1;
 103     *ret_iface = download;
 104
 105     DMUSIC_LockModule();
 106     return S_OK;
 107 }