wine/dlls/dmime/segtriggertrack.c

537 lines
19 KiB
C

/* IDirectMusicSegTriggerTrack Implementation
*
* Copyright (C) 2003-2004 Rok Mandeljc
* Copyright (C) 2003-2004 Raphael Junqueira
*
* 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 "dmime_private.h"
#include "dmobject.h"
WINE_DEFAULT_DEBUG_CHANNEL(dmime);
WINE_DECLARE_DEBUG_CHANNEL(dmfile);
/*****************************************************************************
* IDirectMusicSegTriggerTrack implementation
*/
typedef struct IDirectMusicSegTriggerTrack {
IDirectMusicTrack8 IDirectMusicTrack8_iface;
struct dmobject dmobj;/* IPersistStream only */
LONG ref;
struct list Items;
} IDirectMusicSegTriggerTrack;
/* IDirectMusicSegTriggerTrack IDirectMusicTrack8 part: */
static inline IDirectMusicSegTriggerTrack *impl_from_IDirectMusicTrack8(IDirectMusicTrack8 *iface)
{
return CONTAINING_RECORD(iface, IDirectMusicSegTriggerTrack, IDirectMusicTrack8_iface);
}
static HRESULT WINAPI IDirectMusicTrack8Impl_QueryInterface(IDirectMusicTrack8 *iface, REFIID riid,
void **ret_iface)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ret_iface);
*ret_iface = NULL;
if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IDirectMusicTrack) ||
IsEqualIID(riid, &IID_IDirectMusicTrack8))
*ret_iface = iface;
else if (IsEqualIID(riid, &IID_IPersistStream))
*ret_iface = &This->dmobj.IPersistStream_iface;
else {
WARN("(%p, %s, %p): not found\n", This, debugstr_dmguid(riid), ret_iface);
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ret_iface);
return S_OK;
}
static ULONG WINAPI IDirectMusicTrack8Impl_AddRef(IDirectMusicTrack8 *iface)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
LONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) ref=%d\n", This, ref);
return ref;
}
static ULONG WINAPI IDirectMusicTrack8Impl_Release(IDirectMusicTrack8 *iface)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
LONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) ref=%d\n", This, ref);
if (!ref) {
HeapFree(GetProcessHeap(), 0, This);
DMIME_UnlockModule();
}
return ref;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_Init(IDirectMusicTrack8 *iface,
IDirectMusicSegment *pSegment)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
FIXME("(%p, %p): stub\n", This, pSegment);
return S_OK;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_InitPlay(IDirectMusicTrack8 *iface,
IDirectMusicSegmentState *pSegmentState, IDirectMusicPerformance *pPerformance,
void **ppStateData, DWORD dwVirtualTrack8ID, DWORD dwFlags)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
FIXME("(%p, %p, %p, %p, %d, %d): stub\n", This, pSegmentState, pPerformance, ppStateData, dwVirtualTrack8ID, dwFlags);
return S_OK;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_EndPlay(IDirectMusicTrack8 *iface, void *pStateData)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
FIXME("(%p, %p): stub\n", This, pStateData);
return S_OK;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_Play(IDirectMusicTrack8 *iface, void *pStateData,
MUSIC_TIME mtStart, MUSIC_TIME mtEnd, MUSIC_TIME mtOffset, DWORD dwFlags,
IDirectMusicPerformance *pPerf, IDirectMusicSegmentState *pSegSt, DWORD dwVirtualID)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
FIXME("(%p, %p, %d, %d, %d, %d, %p, %p, %d): stub\n", This, pStateData, mtStart, mtEnd, mtOffset, dwFlags, pPerf, pSegSt, dwVirtualID);
return S_OK;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_GetParam(IDirectMusicTrack8 *iface, REFGUID rguidType,
MUSIC_TIME mtTime, MUSIC_TIME *pmtNext, void *pParam)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
FIXME("(%p, %s, %d, %p, %p): stub\n", This, debugstr_dmguid(rguidType), mtTime, pmtNext, pParam);
return S_OK;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_SetParam(IDirectMusicTrack8 *iface, REFGUID rguidType,
MUSIC_TIME mtTime, void *pParam)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
FIXME("(%p, %s, %d, %p): stub\n", This, debugstr_dmguid(rguidType), mtTime, pParam);
return S_OK;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_IsParamSupported(IDirectMusicTrack8 *iface,
REFGUID rguidType)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
TRACE("(%p, %s)\n", This, debugstr_dmguid(rguidType));
/* didn't find any params */
TRACE("param unsupported\n");
return DMUS_E_TYPE_UNSUPPORTED;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_AddNotificationType(IDirectMusicTrack8 *iface,
REFGUID notiftype)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
TRACE("(%p, %s): method not implemented\n", This, debugstr_dmguid(notiftype));
return E_NOTIMPL;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_RemoveNotificationType(IDirectMusicTrack8 *iface,
REFGUID notiftype)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
TRACE("(%p, %s): method not implemented\n", This, debugstr_dmguid(notiftype));
return E_NOTIMPL;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_Clone(IDirectMusicTrack8 *iface, MUSIC_TIME mtStart,
MUSIC_TIME mtEnd, IDirectMusicTrack **ppTrack)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
FIXME("(%p, %d, %d, %p): stub\n", This, mtStart, mtEnd, ppTrack);
return S_OK;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_PlayEx(IDirectMusicTrack8 *iface, void *pStateData,
REFERENCE_TIME rtStart, REFERENCE_TIME rtEnd, REFERENCE_TIME rtOffset, DWORD dwFlags,
IDirectMusicPerformance *pPerf, IDirectMusicSegmentState *pSegSt, DWORD dwVirtualID)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
FIXME("(%p, %p, 0x%s, 0x%s, 0x%s, %d, %p, %p, %d): stub\n", This, pStateData, wine_dbgstr_longlong(rtStart),
wine_dbgstr_longlong(rtEnd), wine_dbgstr_longlong(rtOffset), dwFlags, pPerf, pSegSt, dwVirtualID);
return S_OK;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_GetParamEx(IDirectMusicTrack8 *iface,
REFGUID rguidType, REFERENCE_TIME rtTime, REFERENCE_TIME *prtNext, void *pParam,
void *pStateData, DWORD dwFlags)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
FIXME("(%p, %s, 0x%s, %p, %p, %p, %d): stub\n", This, debugstr_dmguid(rguidType),
wine_dbgstr_longlong(rtTime), prtNext, pParam, pStateData, dwFlags);
return S_OK;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_SetParamEx(IDirectMusicTrack8 *iface,
REFGUID rguidType, REFERENCE_TIME rtTime, void *pParam, void *pStateData, DWORD dwFlags)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
FIXME("(%p, %s, 0x%s, %p, %p, %d): stub\n", This, debugstr_dmguid(rguidType),
wine_dbgstr_longlong(rtTime), pParam, pStateData, dwFlags);
return S_OK;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_Compose(IDirectMusicTrack8 *iface, IUnknown *context,
DWORD trackgroup, IDirectMusicTrack **track)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
TRACE("(%p, %p, %d, %p): method not implemented\n", This, context, trackgroup, track);
return E_NOTIMPL;
}
static HRESULT WINAPI IDirectMusicTrack8Impl_Join(IDirectMusicTrack8 *iface,
IDirectMusicTrack *newtrack, MUSIC_TIME join, IUnknown *context, DWORD trackgroup,
IDirectMusicTrack **resulttrack)
{
IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
TRACE("(%p, %p, %d, %p, %d, %p): method not implemented\n", This, newtrack, join, context,
trackgroup, resulttrack);
return E_NOTIMPL;
}
static const IDirectMusicTrack8Vtbl dmtrack8_vtbl = {
IDirectMusicTrack8Impl_QueryInterface,
IDirectMusicTrack8Impl_AddRef,
IDirectMusicTrack8Impl_Release,
IDirectMusicTrack8Impl_Init,
IDirectMusicTrack8Impl_InitPlay,
IDirectMusicTrack8Impl_EndPlay,
IDirectMusicTrack8Impl_Play,
IDirectMusicTrack8Impl_GetParam,
IDirectMusicTrack8Impl_SetParam,
IDirectMusicTrack8Impl_IsParamSupported,
IDirectMusicTrack8Impl_AddNotificationType,
IDirectMusicTrack8Impl_RemoveNotificationType,
IDirectMusicTrack8Impl_Clone,
IDirectMusicTrack8Impl_PlayEx,
IDirectMusicTrack8Impl_GetParamEx,
IDirectMusicTrack8Impl_SetParamEx,
IDirectMusicTrack8Impl_Compose,
IDirectMusicTrack8Impl_Join
};
static HRESULT parse_segment(IDirectMusicSegTriggerTrack *This, DMUS_PRIVATE_CHUNK *pChunk,
IStream *pStm)
{
DMUS_PRIVATE_CHUNK Chunk;
DWORD ListSize[3], ListCount[3];
LARGE_INTEGER liMove; /* used when skipping chunks */
HRESULT hr;
IDirectMusicObject* pObject = NULL;
LPDMUS_PRIVATE_SEGMENT_ITEM pNewItem = NULL;
if (pChunk->fccID != DMUS_FOURCC_SEGMENT_LIST) {
ERR_(dmfile)(": %s chunk should be a SEGMENT list\n", debugstr_fourcc (pChunk->fccID));
return E_FAIL;
}
ListSize[0] = pChunk->dwSize - sizeof(FOURCC);
ListCount[0] = 0;
do {
IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
switch (Chunk.fccID) {
case DMUS_FOURCC_SEGMENTITEM_CHUNK: {
TRACE_(dmfile)(": segment item chunk\n");
/** alloc new item entry */
pNewItem = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, sizeof(DMUS_PRIVATE_SEGMENT_ITEM));
if (!pNewItem)
return E_OUTOFMEMORY;
IStream_Read (pStm, &pNewItem->header, sizeof(DMUS_IO_SEGMENT_ITEM_HEADER), NULL);
TRACE_(dmfile)(" - lTimePhysical: %u\n", pNewItem->header.lTimeLogical);
TRACE_(dmfile)(" - lTimePhysical: %u\n", pNewItem->header.lTimePhysical);
TRACE_(dmfile)(" - dwPlayFlags: 0x%08x\n", pNewItem->header.dwPlayFlags);
TRACE_(dmfile)(" - dwFlags: 0x%08x\n", pNewItem->header.dwFlags);
list_add_tail (&This->Items, &pNewItem->entry);
break;
}
case DMUS_FOURCC_SEGMENTITEMNAME_CHUNK: {
TRACE_(dmfile)(": segment item name chunk\n");
if (!pNewItem) {
ERR(": pNewItem not allocated, bad chunk order?\n");
return E_FAIL;
}
IStream_Read (pStm, pNewItem->wszName, Chunk.dwSize, NULL);
TRACE_(dmfile)(" - name: %s\n", debugstr_w(pNewItem->wszName));
break;
}
case FOURCC_LIST: {
IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
ListSize[1] = Chunk.dwSize - sizeof(FOURCC);
ListCount[1] = 0;
switch (Chunk.fccID) {
case DMUS_FOURCC_REF_LIST: {
FIXME_(dmfile)(": DMRF (DM References) list\n");
hr = IDirectMusicUtils_IPersistStream_ParseReference(&This->dmobj.IPersistStream_iface,
&Chunk, pStm, &pObject);
if (FAILED(hr)) {
ERR(": could not load Reference\n");
return hr;
}
if (!pNewItem) {
ERR(": pNewItem not allocated, bad chunk order?\n");
return E_FAIL;
}
pNewItem->pObject = pObject;
break;
}
default: {
TRACE_(dmfile)(": unknown (skipping)\n");
liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
break;
}
}
break;
}
default: {
TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
break;
}
}
TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
} while (ListCount[0] < ListSize[0]);
return S_OK;
}
static HRESULT parse_segments_list(IDirectMusicSegTriggerTrack *This, DMUS_PRIVATE_CHUNK *pChunk,
IStream *pStm)
{
HRESULT hr = E_FAIL;
DMUS_PRIVATE_CHUNK Chunk;
DWORD ListSize[3], ListCount[3];
LARGE_INTEGER liMove; /* used when skipping chunks */
if (pChunk->fccID != DMUS_FOURCC_SEGMENTS_LIST) {
ERR_(dmfile)(": %s chunk should be a SEGMENTS list\n", debugstr_fourcc (pChunk->fccID));
return E_FAIL;
}
ListSize[0] = pChunk->dwSize - sizeof(FOURCC);
ListCount[0] = 0;
do {
IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
switch (Chunk.fccID) {
case FOURCC_LIST: {
IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
ListSize[1] = Chunk.dwSize - sizeof(FOURCC);
ListCount[1] = 0;
switch (Chunk.fccID) {
case DMUS_FOURCC_SEGMENT_LIST: {
TRACE_(dmfile)(": SEGMENT list\n");
hr = parse_segment(This, &Chunk, pStm);
if (FAILED(hr)) return hr;
break;
}
default: {
TRACE_(dmfile)(": unknown (skipping)\n");
liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
break;
}
}
break;
}
default: {
TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
break;
}
}
TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
} while (ListCount[0] < ListSize[0]);
return S_OK;
}
static HRESULT parse_seqtrack_list(IDirectMusicSegTriggerTrack *This, DMUS_PRIVATE_CHUNK *pChunk,
IStream *pStm)
{
HRESULT hr = E_FAIL;
DMUS_PRIVATE_CHUNK Chunk;
DWORD ListSize[3], ListCount[3];
LARGE_INTEGER liMove; /* used when skipping chunks */
if (pChunk->fccID != DMUS_FOURCC_SEGTRACK_LIST) {
ERR_(dmfile)(": %s chunk should be a SEGTRACK list\n", debugstr_fourcc (pChunk->fccID));
return E_FAIL;
}
ListSize[0] = pChunk->dwSize - sizeof(FOURCC);
ListCount[0] = 0;
do {
IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
switch (Chunk.fccID) {
case DMUS_FOURCC_SEGTRACK_CHUNK: {
TRACE_(dmfile)(": segment trigger track chunk\n");
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
break;
}
case FOURCC_LIST: {
IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
ListSize[1] = Chunk.dwSize - sizeof(FOURCC);
ListCount[1] = 0;
switch (Chunk.fccID) {
case DMUS_FOURCC_SEGMENTS_LIST: {
TRACE_(dmfile)(": SEGMENTS list\n");
hr = parse_segments_list(This, &Chunk, pStm);
if (FAILED(hr)) return hr;
break;
}
default: {
TRACE_(dmfile)(": unknown (skipping)\n");
liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
break;
}
}
break;
}
default: {
TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
break;
}
}
TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
} while (ListCount[0] < ListSize[0]);
return S_OK;
}
static inline IDirectMusicSegTriggerTrack *impl_from_IPersistStream(IPersistStream *iface)
{
return CONTAINING_RECORD(iface, IDirectMusicSegTriggerTrack, dmobj.IPersistStream_iface);
}
static HRESULT WINAPI IPersistStreamImpl_Load(IPersistStream *iface, IStream *pStm)
{
IDirectMusicSegTriggerTrack *This = impl_from_IPersistStream(iface);
DMUS_PRIVATE_CHUNK Chunk;
LARGE_INTEGER liMove;
HRESULT hr;
TRACE("(%p, %p): Loading\n", This, pStm);
IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
switch (Chunk.fccID) {
case FOURCC_LIST: {
IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
switch (Chunk.fccID) {
case DMUS_FOURCC_SEGTRACK_LIST: {
TRACE_(dmfile)(": segment trigger track list\n");
hr = parse_seqtrack_list(This, &Chunk, pStm);
if (FAILED(hr)) return hr;
break;
}
default: {
TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
return E_FAIL;
}
}
TRACE_(dmfile)(": reading finished\n");
break;
}
default: {
TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
return E_FAIL;
}
}
return S_OK;
}
static const IPersistStreamVtbl persiststream_vtbl = {
dmobj_IPersistStream_QueryInterface,
dmobj_IPersistStream_AddRef,
dmobj_IPersistStream_Release,
dmobj_IPersistStream_GetClassID,
unimpl_IPersistStream_IsDirty,
IPersistStreamImpl_Load,
unimpl_IPersistStream_Save,
unimpl_IPersistStream_GetSizeMax
};
/* for ClassFactory */
HRESULT WINAPI create_dmsegtriggertrack(REFIID lpcGUID, void **ppobj)
{
IDirectMusicSegTriggerTrack *track;
HRESULT hr;
track = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*track));
if (!track) {
*ppobj = NULL;
return E_OUTOFMEMORY;
}
track->IDirectMusicTrack8_iface.lpVtbl = &dmtrack8_vtbl;
track->ref = 1;
dmobject_init(&track->dmobj, &CLSID_DirectMusicSegTriggerTrack,
(IUnknown *)&track->IDirectMusicTrack8_iface);
track->dmobj.IPersistStream_iface.lpVtbl = &persiststream_vtbl;
list_init(&track->Items);
DMIME_LockModule();
hr = IDirectMusicTrack8_QueryInterface(&track->IDirectMusicTrack8_iface, lpcGUID, ppobj);
IDirectMusicTrack8_Release(&track->IDirectMusicTrack8_iface);
return hr;
}