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115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
/*
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* IDirectMusicDownload Implementation
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*
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* Copyright (C) 2003-2004 Rok Mandeljc
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "dmusic_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(dmusic);
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struct download
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{
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IDirectMusicDownload IDirectMusicDownload_iface;
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LONG ref;
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DWORD size;
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BYTE data[];
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};
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C_ASSERT(sizeof(struct download) == offsetof(struct download, data[0]));
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static inline struct download *impl_from_IDirectMusicDownload(IDirectMusicDownload *iface)
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{
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return CONTAINING_RECORD(iface, struct download, IDirectMusicDownload_iface);
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}
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static HRESULT WINAPI download_QueryInterface(IDirectMusicDownload *iface, REFIID riid, void **ret_iface)
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{
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TRACE("(%p, %s, %p)\n", iface, debugstr_dmguid(riid), ret_iface);
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if (IsEqualIID(riid, &IID_IUnknown) ||
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IsEqualIID(riid, &IID_IDirectMusicDownload))
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{
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IDirectMusicDownload_AddRef(iface);
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*ret_iface = iface;
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return S_OK;
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}
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*ret_iface = NULL;
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WARN("(%p, %s, %p): not found\n", iface, debugstr_dmguid(riid), ret_iface);
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return E_NOINTERFACE;
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}
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static ULONG WINAPI download_AddRef(IDirectMusicDownload *iface)
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{
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struct download *This = impl_from_IDirectMusicDownload(iface);
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ULONG ref = InterlockedIncrement(&This->ref);
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TRACE("(%p): new ref = %lu\n", iface, ref);
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return ref;
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}
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static ULONG WINAPI download_Release(IDirectMusicDownload *iface)
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{
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struct download *This = impl_from_IDirectMusicDownload(iface);
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ULONG ref = InterlockedDecrement(&This->ref);
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TRACE("(%p): new ref = %lu\n", iface, ref);
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if (!ref) {
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free(This);
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}
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return ref;
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}
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static HRESULT WINAPI download_GetBuffer(IDirectMusicDownload *iface, void **buffer, DWORD *size)
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{
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struct download *This = impl_from_IDirectMusicDownload(iface);
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TRACE("(%p, %p, %p)\n", iface, buffer, size);
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*buffer = This->data;
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*size = This->size;
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return S_OK;
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}
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static const IDirectMusicDownloadVtbl download_vtbl =
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{
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download_QueryInterface,
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download_AddRef,
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download_Release,
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download_GetBuffer,
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};
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HRESULT download_create(DWORD size, IDirectMusicDownload **ret_iface)
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{
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struct download *download;
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*ret_iface = NULL;
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if (!(download = malloc(offsetof(struct download, data[size])))) return E_OUTOFMEMORY;
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download->IDirectMusicDownload_iface.lpVtbl = &download_vtbl;
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download->ref = 1;
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download->size = size;
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TRACE("Created DirectMusicDownload %p\n", download);
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*ret_iface = &download->IDirectMusicDownload_iface;
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return S_OK;
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}
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