dlls/dmcompos/chordmap.c

   1 /* IDirectMusicChordMap 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 "dmcompos_private.h"
  21
  22 WINE_DEFAULT_DEBUG_CHANNEL(dmcompos);
  23 WINE_DECLARE_DEBUG_CHANNEL(dmfile);
  24
  25 static ULONG WINAPI IDirectMusicChordMapImpl_IUnknown_AddRef (LPUNKNOWN iface);
  26 static ULONG WINAPI IDirectMusicChordMapImpl_IDirectMusicChordMap_AddRef (LPDIRECTMUSICCHORDMAP iface);
  27 static ULONG WINAPI IDirectMusicChordMapImpl_IDirectMusicObject_AddRef (LPDIRECTMUSICOBJECT iface);
  28 static ULONG WINAPI IDirectMusicChordMapImpl_IPersistStream_AddRef (LPPERSISTSTREAM iface);
  29
  30 /*****************************************************************************
  31  * IDirectMusicChordMapImpl implementation
  32  */
  33 /* IDirectMusicChordMapImpl IUnknown part: */
  34 static HRESULT WINAPI IDirectMusicChordMapImpl_IUnknown_QueryInterface (LPUNKNOWN iface, REFIID riid, LPVOID *ppobj) {
  35         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, UnknownVtbl, iface);
  36         TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ppobj);
  37
  38         if (IsEqualIID (riid, &IID_IUnknown)) {
  39                 *ppobj = &This->UnknownVtbl;
  40                 IDirectMusicChordMapImpl_IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
  41                 return S_OK;
  42         } else if (IsEqualIID (riid, &IID_IDirectMusicChordMap)) {
  43                 *ppobj = &This->ChordMapVtbl;
  44                 IDirectMusicChordMapImpl_IDirectMusicChordMap_AddRef ((LPDIRECTMUSICCHORDMAP)&This->ChordMapVtbl);
  45                 return S_OK;
  46         } else if (IsEqualIID (riid, &IID_IDirectMusicObject)) {
  47                 *ppobj = &This->ObjectVtbl;
  48                 IDirectMusicChordMapImpl_IDirectMusicObject_AddRef ((LPDIRECTMUSICOBJECT)&This->ObjectVtbl);
  49                 return S_OK;
  50         } else if (IsEqualIID (riid, &IID_IPersistStream)) {
  51                 *ppobj = &This->PersistStreamVtbl;
  52                 IDirectMusicChordMapImpl_IPersistStream_AddRef ((LPPERSISTSTREAM)&This->PersistStreamVtbl);
  53                 return S_OK;
  54         }
  55
  56         WARN("(%p, %s, %p): not found\n", This, debugstr_dmguid(riid), ppobj);
  57         return E_NOINTERFACE;
  58 }
  59
  60 static ULONG WINAPI IDirectMusicChordMapImpl_IUnknown_AddRef (LPUNKNOWN iface) {
  61         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, UnknownVtbl, iface);
  62         ULONG ref = InterlockedIncrement(&This->ref);
  63
  64         TRACE("(%p): AddRef from %d\n", This, ref - 1);
  65
  66         DMCOMPOS_LockModule();
  67
  68         return ref;
  69 }
  70
  71 static ULONG WINAPI IDirectMusicChordMapImpl_IUnknown_Release (LPUNKNOWN iface) {
  72         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, UnknownVtbl, iface);
  73         ULONG ref = InterlockedDecrement(&This->ref);
  74
  75         TRACE("(%p): ReleaseRef to %d\n", This, ref);
  76
  77         if (ref == 0) {
  78                 HeapFree(GetProcessHeap(), 0, This);
  79         }
  80
  81         DMCOMPOS_UnlockModule();
  82
  83         return ref;
  84 }
  85
  86 static const IUnknownVtbl DirectMusicChordMap_Unknown_Vtbl = {
  87         IDirectMusicChordMapImpl_IUnknown_QueryInterface,
  88         IDirectMusicChordMapImpl_IUnknown_AddRef,
  89         IDirectMusicChordMapImpl_IUnknown_Release
  90 };
  91
  92 /* IDirectMusicChordMapImpl IDirectMusicChordMap part: */
  93 static HRESULT WINAPI IDirectMusicChordMapImpl_IDirectMusicChordMap_QueryInterface (LPDIRECTMUSICCHORDMAP iface, REFIID riid, LPVOID *ppobj) {
  94         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, ChordMapVtbl, iface);
  95         return IDirectMusicChordMapImpl_IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
  96 }
  97
  98 static ULONG WINAPI IDirectMusicChordMapImpl_IDirectMusicChordMap_AddRef (LPDIRECTMUSICCHORDMAP iface) {
  99         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, ChordMapVtbl, iface);
 100         return IDirectMusicChordMapImpl_IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
 101 }
 102
 103 static ULONG WINAPI IDirectMusicChordMapImpl_IDirectMusicChordMap_Release (LPDIRECTMUSICCHORDMAP iface) {
 104         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, ChordMapVtbl, iface);
 105         return IDirectMusicChordMapImpl_IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
 106 }
 107
 108 static HRESULT WINAPI IDirectMusicChordMapImpl_IDirectMusicChordMap_GetScale (LPDIRECTMUSICCHORDMAP iface, DWORD* pdwScale) {
 109         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, ChordMapVtbl, iface);
 110         FIXME("(%p, %p): stub\n", This, pdwScale);
 111         return S_OK;
 112 }
 113
 114 static const IDirectMusicChordMapVtbl DirectMusicChordMap_ChordMap_Vtbl = {
 115         IDirectMusicChordMapImpl_IDirectMusicChordMap_QueryInterface,
 116         IDirectMusicChordMapImpl_IDirectMusicChordMap_AddRef,
 117         IDirectMusicChordMapImpl_IDirectMusicChordMap_Release,
 118         IDirectMusicChordMapImpl_IDirectMusicChordMap_GetScale
 119 };
 120
 121 /* IDirectMusicChordMapImpl IDirectMusicObject part: */
 122 static HRESULT WINAPI IDirectMusicChordMapImpl_IDirectMusicObject_QueryInterface (LPDIRECTMUSICOBJECT iface, REFIID riid, LPVOID *ppobj) {
 123         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, ObjectVtbl, iface);
 124         return IDirectMusicChordMapImpl_IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
 125 }
 126
 127 static ULONG WINAPI IDirectMusicChordMapImpl_IDirectMusicObject_AddRef (LPDIRECTMUSICOBJECT iface) {
 128         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, ObjectVtbl, iface);
 129         return IDirectMusicChordMapImpl_IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
 130 }
 131
 132 static ULONG WINAPI IDirectMusicChordMapImpl_IDirectMusicObject_Release (LPDIRECTMUSICOBJECT iface) {
 133         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, ObjectVtbl, iface);
 134         return IDirectMusicChordMapImpl_IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
 135 }
 136
 137 static HRESULT WINAPI IDirectMusicChordMapImpl_IDirectMusicObject_GetDescriptor (LPDIRECTMUSICOBJECT iface, LPDMUS_OBJECTDESC pDesc) {
 138         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, ObjectVtbl, iface);
 139         TRACE("(%p, %p)\n", This, pDesc);
 140         /* I think we shouldn't return pointer here since then values can be changed; it'd be a mess */
 141         memcpy (pDesc, This->pDesc, This->pDesc->dwSize);
 142         return S_OK;
 143 }
 144
 145 static HRESULT WINAPI IDirectMusicChordMapImpl_IDirectMusicObject_SetDescriptor (LPDIRECTMUSICOBJECT iface, LPDMUS_OBJECTDESC pDesc) {
 146         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, ObjectVtbl, iface);
 147         TRACE("(%p, %p): setting descriptor:\n%s\n", This, pDesc, debugstr_DMUS_OBJECTDESC (pDesc));
 148
 149         /* According to MSDN, we should copy only given values, not whole struct */
 150         if (pDesc->dwValidData & DMUS_OBJ_OBJECT)
 151                 This->pDesc->guidObject = pDesc->guidObject;
 152         if (pDesc->dwValidData & DMUS_OBJ_CLASS)
 153                 This->pDesc->guidClass = pDesc->guidClass;
 154         if (pDesc->dwValidData & DMUS_OBJ_NAME)
 155                 lstrcpynW (This->pDesc->wszName, pDesc->wszName, DMUS_MAX_NAME);
 156         if (pDesc->dwValidData & DMUS_OBJ_CATEGORY)
 157                 lstrcpynW (This->pDesc->wszCategory, pDesc->wszCategory, DMUS_MAX_CATEGORY);
 158         if (pDesc->dwValidData & DMUS_OBJ_FILENAME)
 159                 lstrcpynW (This->pDesc->wszFileName, pDesc->wszFileName, DMUS_MAX_FILENAME);
 160         if (pDesc->dwValidData & DMUS_OBJ_VERSION)
 161                 This->pDesc->vVersion = pDesc->vVersion;
 162         if (pDesc->dwValidData & DMUS_OBJ_DATE)
 163                 This->pDesc->ftDate = pDesc->ftDate;
 164         if (pDesc->dwValidData & DMUS_OBJ_MEMORY) {
 165                 This->pDesc->llMemLength = pDesc->llMemLength;
 166                 memcpy (This->pDesc->pbMemData, pDesc->pbMemData, pDesc->llMemLength);
 167         }
 168         if (pDesc->dwValidData & DMUS_OBJ_STREAM) {
 169                 /* according to MSDN, we copy the stream */
 170                 IStream_Clone (pDesc->pStream, &This->pDesc->pStream);
 171         }
 172
 173         /* add new flags */
 174         This->pDesc->dwValidData |= pDesc->dwValidData;
 175
 176         return S_OK;
 177 }
 178
 179 static HRESULT WINAPI IDirectMusicChordMapImpl_IDirectMusicObject_ParseDescriptor (LPDIRECTMUSICOBJECT iface, LPSTREAM pStream, LPDMUS_OBJECTDESC pDesc) {
 180         DMUS_PRIVATE_CHUNK Chunk;
 181         DWORD StreamSize, StreamCount, ListSize[1], ListCount[1];
 182         LARGE_INTEGER liMove; /* used when skipping chunks */
 183
 184         TRACE("(%p, %p)\n", pStream, pDesc);
 185
 186         /* FIXME: should this be determined from stream? */
 187         pDesc->dwValidData |= DMUS_OBJ_CLASS;
 188         pDesc->guidClass = CLSID_DirectMusicChordMap;
 189
 190         IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 191         TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 192         switch (Chunk.fccID) {
 193                 case FOURCC_RIFF: {
 194                         IStream_Read (pStream, &Chunk.fccID, sizeof(FOURCC), NULL);
 195                         TRACE_(dmfile)(": RIFF chunk of type %s", debugstr_fourcc(Chunk.fccID));
 196                         StreamSize = Chunk.dwSize - sizeof(FOURCC);
 197                         StreamCount = 0;
 198                         if (Chunk.fccID == DMUS_FOURCC_CHORDMAP_FORM) {
 199                                 TRACE_(dmfile)(": chord map form\n");
 200                                 do {
 201                                         IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 202                                         StreamCount += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
 203                                         TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 204                                         switch (Chunk.fccID) {
 205                                                 case DMUS_FOURCC_GUID_CHUNK: {
 206                                                         TRACE_(dmfile)(": GUID chunk\n");
 207                                                         pDesc->dwValidData |= DMUS_OBJ_OBJECT;
 208                                                         IStream_Read (pStream, &pDesc->guidObject, Chunk.dwSize, NULL);
 209                                                         break;
 210                                                 }
 211                                                 case DMUS_FOURCC_VERSION_CHUNK: {
 212                                                         TRACE_(dmfile)(": version chunk\n");
 213                                                         pDesc->dwValidData |= DMUS_OBJ_VERSION;
 214                                                         IStream_Read (pStream, &pDesc->vVersion, Chunk.dwSize, NULL);
 215                                                         break;
 216                                                 }
 217                                                 case DMUS_FOURCC_CATEGORY_CHUNK: {
 218                                                         TRACE_(dmfile)(": category chunk\n");
 219                                                         pDesc->dwValidData |= DMUS_OBJ_CATEGORY;
 220                                                         IStream_Read (pStream, pDesc->wszCategory, Chunk.dwSize, NULL);
 221                                                         break;
 222                                                 }
 223                                                 case FOURCC_LIST: {
 224                                                         IStream_Read (pStream, &Chunk.fccID, sizeof(FOURCC), NULL);
 225                                                         TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
 226                                                         ListSize[0] = Chunk.dwSize - sizeof(FOURCC);
 227                                                         ListCount[0] = 0;
 228                                                         switch (Chunk.fccID) {
 229                                                                 /* evil M$ UNFO list, which can (!?) contain INFO elements */
 230                                                                 case DMUS_FOURCC_UNFO_LIST: {
 231                                                                         TRACE_(dmfile)(": UNFO list\n");
 232                                                                         do {
 233                                                                                 IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 234                                                                                 ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
 235                                                                                 TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 236                                                                                 switch (Chunk.fccID) {
 237                                                                                         /* don't ask me why, but M$ puts INFO elements in UNFO list sometimes
 238                                              (though strings seem to be valid unicode) */
 239                                                                                         case mmioFOURCC('I','N','A','M'):
 240                                                                                         case DMUS_FOURCC_UNAM_CHUNK: {
 241                                                                                                 TRACE_(dmfile)(": name chunk\n");
 242                                                                                                 pDesc->dwValidData |= DMUS_OBJ_NAME;
 243                                                                                                 IStream_Read (pStream, pDesc->wszName, Chunk.dwSize, NULL);
 244                                                                                                 break;
 245                                                                                         }
 246                                                                                         case mmioFOURCC('I','A','R','T'):
 247                                                                                         case DMUS_FOURCC_UART_CHUNK: {
 248                                                                                                 TRACE_(dmfile)(": artist chunk (ignored)\n");
 249                                                                                                 liMove.QuadPart = Chunk.dwSize;
 250                                                                                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 251                                                                                                 break;
 252                                                                                         }
 253                                                                                         case mmioFOURCC('I','C','O','P'):
 254                                                                                         case DMUS_FOURCC_UCOP_CHUNK: {
 255                                                                                                 TRACE_(dmfile)(": copyright chunk (ignored)\n");
 256                                                                                                 liMove.QuadPart = Chunk.dwSize;
 257                                                                                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 258                                                                                                 break;
 259                                                                                         }
 260                                                                                         case mmioFOURCC('I','S','B','J'):
 261                                                                                         case DMUS_FOURCC_USBJ_CHUNK: {
 262                                                                                                 TRACE_(dmfile)(": subject chunk (ignored)\n");
 263                                                                                                 liMove.QuadPart = Chunk.dwSize;
 264                                                                                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 265                                                                                                 break;
 266                                                                                         }
 267                                                                                         case mmioFOURCC('I','C','M','T'):
 268                                                                                         case DMUS_FOURCC_UCMT_CHUNK: {
 269                                                                                                 TRACE_(dmfile)(": comment chunk (ignored)\n");
 270                                                                                                 liMove.QuadPart = Chunk.dwSize;
 271                                                                                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 272                                                                                                 break;
 273                                                                                         }
 274                                                                                         default: {
 275                                                                                                 TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 276                                                                                                 liMove.QuadPart = Chunk.dwSize;
 277                                                                                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 278                                                                                                 break;
 279                                                                                         }
 280                                                                                 }
 281                                                                                 TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
 282                                                                         } while (ListCount[0] < ListSize[0]);
 283                                                                         break;
 284                                                                 }
 285                                                                 default: {
 286                                                                         TRACE_(dmfile)(": unknown (skipping)\n");
 287                                                                         liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
 288                                                                         IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 289                                                                         break;
 290                                                                 }
 291                                                         }
 292                                                         break;
 293                                                 }
 294                                                 default: {
 295                                                         TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 296                                                         liMove.QuadPart = Chunk.dwSize;
 297                                                         IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 298                                                         break;
 299                                                 }
 300                                         }
 301                                         TRACE_(dmfile)(": StreamCount[0] = %d < StreamSize[0] = %d\n", StreamCount, StreamSize);
 302                                 } while (StreamCount < StreamSize);
 303                         } else {
 304                                 TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 305                                 liMove.QuadPart = StreamSize;
 306                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
 307                                 return E_FAIL;
 308                         }
 309
 310                         TRACE_(dmfile)(": reading finished\n");
 311                         break;
 312                 }
 313                 default: {
 314                         TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 315                         liMove.QuadPart = Chunk.dwSize;
 316                         IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
 317                         return DMUS_E_INVALIDFILE;
 318                 }
 319         }
 320
 321         TRACE(": returning descriptor:\n%s\n", debugstr_DMUS_OBJECTDESC (pDesc));
 322
 323         return S_OK;
 324 }
 325
 326 static const IDirectMusicObjectVtbl DirectMusicChordMap_Object_Vtbl = {
 327         IDirectMusicChordMapImpl_IDirectMusicObject_QueryInterface,
 328         IDirectMusicChordMapImpl_IDirectMusicObject_AddRef,
 329         IDirectMusicChordMapImpl_IDirectMusicObject_Release,
 330         IDirectMusicChordMapImpl_IDirectMusicObject_GetDescriptor,
 331         IDirectMusicChordMapImpl_IDirectMusicObject_SetDescriptor,
 332         IDirectMusicChordMapImpl_IDirectMusicObject_ParseDescriptor
 333 };
 334
 335
 336 /* IDirectMusicChordMapImpl IPersistStream part: */
 337 static HRESULT WINAPI IDirectMusicChordMapImpl_IPersistStream_QueryInterface (LPPERSISTSTREAM iface, REFIID riid, LPVOID *ppobj) {
 338         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, PersistStreamVtbl, iface);
 339         return IDirectMusicChordMapImpl_IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
 340 }
 341
 342 static ULONG WINAPI IDirectMusicChordMapImpl_IPersistStream_AddRef (LPPERSISTSTREAM iface) {
 343         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, PersistStreamVtbl, iface);
 344         return IDirectMusicChordMapImpl_IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
 345 }
 346
 347 static ULONG WINAPI IDirectMusicChordMapImpl_IPersistStream_Release (LPPERSISTSTREAM iface) {
 348         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, PersistStreamVtbl, iface);
 349         return IDirectMusicChordMapImpl_IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
 350 }
 351
 352 static HRESULT WINAPI IDirectMusicChordMapImpl_IPersistStream_GetClassID (LPPERSISTSTREAM iface, CLSID* pClassID) {
 353         return E_NOTIMPL;
 354 }
 355
 356 static HRESULT WINAPI IDirectMusicChordMapImpl_IPersistStream_IsDirty (LPPERSISTSTREAM iface) {
 357         return E_NOTIMPL;
 358 }
 359
 360 static HRESULT WINAPI IDirectMusicChordMapImpl_IPersistStream_Load (LPPERSISTSTREAM iface, IStream* pStm) {
 361         ICOM_THIS_MULTI(IDirectMusicChordMapImpl, PersistStreamVtbl, iface);
 362
 363         FOURCC chunkID;
 364         DWORD chunkSize, StreamSize, StreamCount, ListSize[3], ListCount[3];
 365         LARGE_INTEGER liMove; /* used when skipping chunks */
 366
 367         FIXME("(%p, %p): Loading not implemented yet\n", This, pStm);
 368         IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
 369         IStream_Read (pStm, &chunkSize, sizeof(DWORD), NULL);
 370         TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
 371         switch (chunkID) {
 372                 case FOURCC_RIFF: {
 373                         IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
 374                         TRACE_(dmfile)(": RIFF chunk of type %s", debugstr_fourcc(chunkID));
 375                         StreamSize = chunkSize - sizeof(FOURCC);
 376                         StreamCount = 0;
 377                         switch (chunkID) {
 378                                 case DMUS_FOURCC_CHORDMAP_FORM: {
 379                                         TRACE_(dmfile)(": chordmap form\n");
 380                                         do {
 381                                                 IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
 382                                                 IStream_Read (pStm, &chunkSize, sizeof(FOURCC), NULL);
 383                                                 StreamCount += sizeof(FOURCC) + sizeof(DWORD) + chunkSize;
 384                                                 TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
 385                                                 switch (chunkID) {
 386                                                         case DMUS_FOURCC_GUID_CHUNK: {
 387                                                                 TRACE_(dmfile)(": GUID chunk\n");
 388                                                                 This->pDesc->dwValidData |= DMUS_OBJ_OBJECT;
 389                                                                 IStream_Read (pStm, &This->pDesc->guidObject, chunkSize, NULL);
 390                                                                 break;
 391                                                         }
 392                                                         case DMUS_FOURCC_VERSION_CHUNK: {
 393                                                                 TRACE_(dmfile)(": version chunk\n");
 394                                                                 This->pDesc->dwValidData |= DMUS_OBJ_VERSION;
 395                                                                 IStream_Read (pStm, &This->pDesc->vVersion, chunkSize, NULL);
 396                                                                 break;
 397                                                         }
 398                                                         case DMUS_FOURCC_CATEGORY_CHUNK: {
 399                                                                 TRACE_(dmfile)(": category chunk\n");
 400                                                                 This->pDesc->dwValidData |= DMUS_OBJ_CATEGORY;
 401                                                                 IStream_Read (pStm, This->pDesc->wszCategory, chunkSize, NULL);
 402                                                                 break;
 403                                                         }
 404                                                         case FOURCC_LIST: {
 405                                                                 IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
 406                                                                 TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(chunkID));
 407                                                                 ListSize[0] = chunkSize - sizeof(FOURCC);
 408                                                                 ListCount[0] = 0;
 409                                                                 switch (chunkID) {
 410                                                                         case DMUS_FOURCC_UNFO_LIST: {
 411                                                                                 TRACE_(dmfile)(": UNFO list\n");
 412                                                                                 do {
 413                                                                                         IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
 414                                                                                         IStream_Read (pStm, &chunkSize, sizeof(FOURCC), NULL);
 415                                                                                         ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + chunkSize;
 416                                                                                         TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
 417                                                                                         switch (chunkID) {
 418                                                                                                 /* don't ask me why, but M$ puts INFO elements in UNFO list sometimes
 419                                               (though strings seem to be valid unicode) */
 420                                                                                                 case mmioFOURCC('I','N','A','M'):
 421                                                                                                 case DMUS_FOURCC_UNAM_CHUNK: {
 422                                                                                                         TRACE_(dmfile)(": name chunk\n");
 423                                                                                                         This->pDesc->dwValidData |= DMUS_OBJ_NAME;
 424                                                                                                         IStream_Read (pStm, This->pDesc->wszName, chunkSize, NULL);
 425                                                                                                         break;
 426                                                                                                 }
 427                                                                                                 case mmioFOURCC('I','A','R','T'):
 428                                                                                                 case DMUS_FOURCC_UART_CHUNK: {
 429                                                                                                         TRACE_(dmfile)(": artist chunk (ignored)\n");
 430                                                                                                         liMove.QuadPart = chunkSize;
 431                                                                                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 432                                                                                                         break;
 433                                                                                                 }
 434                                                                                                 case mmioFOURCC('I','C','O','P'):
 435                                                                                                 case DMUS_FOURCC_UCOP_CHUNK: {
 436                                                                                                         TRACE_(dmfile)(": copyright chunk (ignored)\n");
 437                                                                                                         liMove.QuadPart = chunkSize;
 438                                                                                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 439                                                                                                         break;
 440                                                                                                 }
 441                                                                                                 case mmioFOURCC('I','S','B','J'):
 442                                                                                                 case DMUS_FOURCC_USBJ_CHUNK: {
 443                                                                                                         TRACE_(dmfile)(": subject chunk (ignored)\n");
 444                                                                                                         liMove.QuadPart = chunkSize;
 445                                                                                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 446                                                                                                         break;
 447                                                                                                 }
 448                                                                                                 case mmioFOURCC('I','C','M','T'):
 449                                                                                                 case DMUS_FOURCC_UCMT_CHUNK: {
 450                                                                                                         TRACE_(dmfile)(": comment chunk (ignored)\n");
 451                                                                                                         liMove.QuadPart = chunkSize;
 452                                                                                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 453                                                                                                         break;
 454                                                                                                 }
 455                                                                                                 default: {
 456                                                                                                         TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 457                                                                                                         liMove.QuadPart = chunkSize;
 458                                                                                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 459                                                                                                         break;
 460                                                                                                 }
 461                                                                                         }
 462                                                                                         TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
 463                                                                                 } while (ListCount[0] < ListSize[0]);
 464                                                                                 break;
 465                                                                         }
 466                                                                         default: {
 467                                                                                 TRACE_(dmfile)(": unknown (skipping)\n");
 468                                                                                 liMove.QuadPart = chunkSize - sizeof(FOURCC);
 469                                                                                 IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 470                                                                                 break;
 471                                                                         }
 472                                                                 }
 473                                                                 break;
 474                                                         }
 475                                                         default: {
 476                                                                 TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 477                                                                 liMove.QuadPart = chunkSize;
 478                                                                 IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 479                                                                 break;
 480                                                         }
 481                                                 }
 482                                                 TRACE_(dmfile)(": StreamCount[0] = %d < StreamSize[0] = %d\n", StreamCount, StreamSize);
 483                                         } while (StreamCount < StreamSize);
 484                                         break;
 485                                 }
 486                                 default: {
 487                                         TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 488                                         liMove.QuadPart = StreamSize;
 489                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
 490                                         return E_FAIL;
 491                                 }
 492                         }
 493                         TRACE_(dmfile)(": reading finished\n");
 494                         break;
 495                 }
 496                 default: {
 497                         TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 498                         liMove.QuadPart = chunkSize;
 499                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
 500                         return E_FAIL;
 501                 }
 502         }
 503
 504         return S_OK;
 505 }
 506
 507 static HRESULT WINAPI IDirectMusicChordMapImpl_IPersistStream_Save (LPPERSISTSTREAM iface, IStream* pStm, BOOL fClearDirty) {
 508         return E_NOTIMPL;
 509 }
 510
 511 static HRESULT WINAPI IDirectMusicChordMapImpl_IPersistStream_GetSizeMax (LPPERSISTSTREAM iface, ULARGE_INTEGER* pcbSize) {
 512         return E_NOTIMPL;
 513 }
 514
 515 static const IPersistStreamVtbl DirectMusicChordMap_PersistStream_Vtbl = {
 516         IDirectMusicChordMapImpl_IPersistStream_QueryInterface,
 517         IDirectMusicChordMapImpl_IPersistStream_AddRef,
 518         IDirectMusicChordMapImpl_IPersistStream_Release,
 519         IDirectMusicChordMapImpl_IPersistStream_GetClassID,
 520         IDirectMusicChordMapImpl_IPersistStream_IsDirty,
 521         IDirectMusicChordMapImpl_IPersistStream_Load,
 522         IDirectMusicChordMapImpl_IPersistStream_Save,
 523         IDirectMusicChordMapImpl_IPersistStream_GetSizeMax
 524 };
 525
 526 /* for ClassFactory */
 527 HRESULT WINAPI DMUSIC_CreateDirectMusicChordMapImpl (LPCGUID lpcGUID, LPVOID* ppobj, LPUNKNOWN pUnkOuter) {
 528         IDirectMusicChordMapImpl* obj;
 529
 530         obj = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusicChordMapImpl));
 531         if (NULL == obj) {
 532                 *ppobj = NULL;
 533                 return E_OUTOFMEMORY;
 534         }
 535         obj->UnknownVtbl = &DirectMusicChordMap_Unknown_Vtbl;
 536         obj->ChordMapVtbl = &DirectMusicChordMap_ChordMap_Vtbl;
 537         obj->ObjectVtbl = &DirectMusicChordMap_Object_Vtbl;
 538         obj->PersistStreamVtbl = &DirectMusicChordMap_PersistStream_Vtbl;
 539         obj->pDesc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DMUS_OBJECTDESC));
 540         DM_STRUCT_INIT(obj->pDesc);
 541         obj->pDesc->dwValidData |= DMUS_OBJ_CLASS;
 542         obj->pDesc->guidClass = CLSID_DirectMusicChordMap;
 543         obj->ref = 0; /* will be inited by QueryInterface */
 544
 545         return IDirectMusicChordMapImpl_IUnknown_QueryInterface ((LPUNKNOWN)&obj->UnknownVtbl, lpcGUID, ppobj);
 546 }