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
  23 WINE_DEFAULT_DEBUG_CHANNEL(dmusic);
  24
  25 static inline IDirectMusicDownloadImpl* impl_from_IDirectMusicDownload(IDirectMusicDownload *iface)
  26 {
  27     return CONTAINING_RECORD(iface, IDirectMusicDownloadImpl, IDirectMusicDownload_iface);
  28 }
  29
  30 /* IDirectMusicDownloadImpl IUnknown part: */
  31 static HRESULT WINAPI IDirectMusicDownloadImpl_QueryInterface(IDirectMusicDownload *iface, REFIID riid, void **ret_iface)
  32 {
  33     TRACE("(%p, %s, %p)\n", iface, debugstr_dmguid(riid), ret_iface);
  34
  35     if (IsEqualIID(riid, &IID_IUnknown) ||
  36         IsEqualIID(riid, &IID_IDirectMusicDownload))
  37     {
  38         IDirectMusicDownload_AddRef(iface);
  39         *ret_iface = iface;
  40         return S_OK;
  41     }
  42
  43     *ret_iface = NULL;
  44     WARN("(%p, %s, %p): not found\n", iface, debugstr_dmguid(riid), ret_iface);
  45     return E_NOINTERFACE;
  46 }
  47
  48 static ULONG WINAPI IDirectMusicDownloadImpl_AddRef(IDirectMusicDownload *iface)
  49 {
  50     IDirectMusicDownloadImpl *This = impl_from_IDirectMusicDownload(iface);
  51     ULONG ref = InterlockedIncrement(&This->ref);
  52
  53     TRACE("(%p)->(): new ref = %u\n", iface, ref);
  54
  55     return ref;
  56 }
  57
  58 static ULONG WINAPI IDirectMusicDownloadImpl_Release(IDirectMusicDownload *iface)
  59 {
  60     IDirectMusicDownloadImpl *This = impl_from_IDirectMusicDownload(iface);
  61     ULONG ref = InterlockedDecrement(&This->ref);
  62
  63     TRACE("(%p)->(): new ref = %u\n", iface, ref);
  64
  65     if (!ref) {
  66         HeapFree(GetProcessHeap(), 0, This);
  67         DMUSIC_UnlockModule();
  68     }
  69
  70     return ref;
  71 }
  72
  73 /* IDirectMusicDownloadImpl IDirectMusicDownload part: */
  74 static HRESULT WINAPI IDirectMusicDownloadImpl_GetBuffer(IDirectMusicDownload *iface, void **buffer, DWORD *size)
  75 {
  76     FIXME("(%p, %p, %p): stub\n", iface, buffer, size);
  77
  78     return S_OK;
  79 }
  80
  81 static const IDirectMusicDownloadVtbl DirectMusicDownload_Vtbl = {
  82     IDirectMusicDownloadImpl_QueryInterface,
  83     IDirectMusicDownloadImpl_AddRef,
  84     IDirectMusicDownloadImpl_Release,
  85     IDirectMusicDownloadImpl_GetBuffer
  86 };
  87
  88 /* for ClassFactory */
  89 HRESULT DMUSIC_CreateDirectMusicDownloadImpl(const GUID *guid, void **ret_iface, IUnknown *unk_outer)
  90 {
  91     IDirectMusicDownloadImpl *download;
  92
  93     download = HeapAlloc(GetProcessHeap(), 0, sizeof(*download));
  94     if (!download)
  95     {
  96         *ret_iface = NULL;
  97         return E_OUTOFMEMORY;
  98     }
  99
 100     download->IDirectMusicDownload_iface.lpVtbl = &DirectMusicDownload_Vtbl;
 101     download->ref = 1;
 102     *ret_iface = download;
 103
 104     DMUSIC_LockModule();
 105     return S_OK;
 106 }