dlls/mf/topology.c

   1 /*
   2  * Copyright 2017 Nikolay Sivov
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19
  20 #include <stdarg.h>
  21
  22 #define COBJMACROS
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26
  27 #undef INITGUID
  28 #include <guiddef.h>
  29 #include "mfidl.h"
  30
  31 #include "wine/debug.h"
  32
  33 #include "mf_private.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(mfplat);
  36
  37 static LONG next_node_id;
  38 static TOPOID next_topology_id;
  39
  40 struct node_stream
  41 {
  42     IMFMediaType *preferred_type;
  43     struct topology_node *connection;
  44     DWORD connection_stream;
  45 };
  46
  47 struct node_streams
  48 {
  49     struct node_stream *streams;
  50     size_t size;
  51     size_t count;
  52 };
  53
  54 struct topology_node
  55 {
  56     IMFTopologyNode IMFTopologyNode_iface;
  57     LONG refcount;
  58     IMFAttributes *attributes;
  59     MF_TOPOLOGY_TYPE node_type;
  60     TOPOID id;
  61     IUnknown *object;
  62     IMFMediaType *input_type; /* Only for tee nodes. */
  63     struct node_streams inputs;
  64     struct node_streams outputs;
  65     CRITICAL_SECTION cs;
  66 };
  67
  68 struct topology
  69 {
  70     IMFTopology IMFTopology_iface;
  71     LONG refcount;
  72     IMFAttributes *attributes;
  73     struct
  74     {
  75         struct topology_node **nodes;
  76         size_t size;
  77         size_t count;
  78     } nodes;
  79     TOPOID id;
  80 };
  81
  82 struct seq_source
  83 {
  84     IMFSequencerSource IMFSequencerSource_iface;
  85     IMFMediaSourceTopologyProvider IMFMediaSourceTopologyProvider_iface;
  86     LONG refcount;
  87 };
  88
  89 static inline struct topology *impl_from_IMFTopology(IMFTopology *iface)
  90 {
  91     return CONTAINING_RECORD(iface, struct topology, IMFTopology_iface);
  92 }
  93
  94 static struct topology_node *impl_from_IMFTopologyNode(IMFTopologyNode *iface)
  95 {
  96     return CONTAINING_RECORD(iface, struct topology_node, IMFTopologyNode_iface);
  97 }
  98
  99 static const IMFTopologyNodeVtbl topologynodevtbl;
 100
 101 static struct topology_node *unsafe_impl_from_IMFTopologyNode(IMFTopologyNode *iface)
 102 {
 103     if (!iface || iface->lpVtbl != &topologynodevtbl)
 104         return NULL;
 105     return impl_from_IMFTopologyNode(iface);
 106 }
 107
 108 static HRESULT create_topology_node(MF_TOPOLOGY_TYPE node_type, struct topology_node **node);
 109 static HRESULT topology_node_connect_output(struct topology_node *node, DWORD output_index,
 110         struct topology_node *connection, DWORD input_index);
 111
 112 static struct topology *unsafe_impl_from_IMFTopology(IMFTopology *iface);
 113
 114 static struct seq_source *impl_from_IMFSequencerSource(IMFSequencerSource *iface)
 115 {
 116     return CONTAINING_RECORD(iface, struct seq_source, IMFSequencerSource_iface);
 117 }
 118
 119 static struct seq_source *impl_from_IMFMediaSourceTopologyProvider(IMFMediaSourceTopologyProvider *iface)
 120 {
 121     return CONTAINING_RECORD(iface, struct seq_source, IMFMediaSourceTopologyProvider_iface);
 122 }
 123
 124 static HRESULT topology_node_reserve_streams(struct node_streams *streams, DWORD index)
 125 {
 126     if (!mf_array_reserve((void **)&streams->streams, &streams->size, index + 1, sizeof(*streams->streams)))
 127         return E_OUTOFMEMORY;
 128
 129     if (index >= streams->count)
 130     {
 131         memset(&streams->streams[streams->count], 0, (index - streams->count + 1) * sizeof(*streams->streams));
 132         streams->count = index + 1;
 133     }
 134
 135     return S_OK;
 136 }
 137
 138 static HRESULT WINAPI topology_QueryInterface(IMFTopology *iface, REFIID riid, void **out)
 139 {
 140     struct topology *topology = impl_from_IMFTopology(iface);
 141
 142     TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), out);
 143
 144     if (IsEqualIID(riid, &IID_IMFTopology) ||
 145             IsEqualIID(riid, &IID_IMFAttributes) ||
 146             IsEqualIID(riid, &IID_IUnknown))
 147     {
 148         *out = &topology->IMFTopology_iface;
 149     }
 150     else
 151     {
 152         FIXME("(%s, %p)\n", debugstr_guid(riid), out);
 153         *out = NULL;
 154         return E_NOINTERFACE;
 155     }
 156
 157     IUnknown_AddRef((IUnknown*)*out);
 158     return S_OK;
 159 }
 160
 161 static ULONG WINAPI topology_AddRef(IMFTopology *iface)
 162 {
 163     struct topology *topology = impl_from_IMFTopology(iface);
 164     ULONG refcount = InterlockedIncrement(&topology->refcount);
 165
 166     TRACE("%p, refcount %lu.\n", iface, refcount);
 167
 168     return refcount;
 169 }
 170
 171 static HRESULT topology_node_disconnect_output(struct topology_node *node, DWORD output_index)
 172 {
 173     struct topology_node *connection = NULL;
 174     struct node_stream *stream;
 175     DWORD connection_stream;
 176     HRESULT hr = S_OK;
 177
 178     EnterCriticalSection(&node->cs);
 179
 180     if (output_index < node->outputs.count)
 181     {
 182         stream = &node->outputs.streams[output_index];
 183
 184         if (stream->connection)
 185         {
 186             connection = stream->connection;
 187             connection_stream = stream->connection_stream;
 188             stream->connection = NULL;
 189             stream->connection_stream = 0;
 190         }
 191         else
 192             hr = MF_E_NOT_FOUND;
 193     }
 194     else
 195         hr = E_INVALIDARG;
 196
 197     LeaveCriticalSection(&node->cs);
 198
 199     if (connection)
 200     {
 201         EnterCriticalSection(&connection->cs);
 202
 203         if (connection_stream < connection->inputs.count)
 204         {
 205             stream = &connection->inputs.streams[connection_stream];
 206
 207             if (stream->connection)
 208             {
 209                 stream->connection = NULL;
 210                 stream->connection_stream = 0;
 211             }
 212         }
 213
 214         LeaveCriticalSection(&connection->cs);
 215
 216         IMFTopologyNode_Release(&connection->IMFTopologyNode_iface);
 217         IMFTopologyNode_Release(&node->IMFTopologyNode_iface);
 218     }
 219
 220     return hr;
 221 }
 222
 223 static void topology_node_disconnect(struct topology_node *node)
 224 {
 225     struct node_stream *stream;
 226     size_t i;
 227
 228     for (i = 0; i < node->outputs.count; ++i)
 229         topology_node_disconnect_output(node, i);
 230
 231     for (i = 0; i < node->inputs.count; ++i)
 232     {
 233         stream = &node->inputs.streams[i];
 234         if (stream->connection)
 235             topology_node_disconnect_output(stream->connection, stream->connection_stream);
 236     }
 237 }
 238
 239 static void topology_clear(struct topology *topology)
 240 {
 241     size_t i;
 242
 243     for (i = 0; i < topology->nodes.count; ++i)
 244     {
 245         topology_node_disconnect(topology->nodes.nodes[i]);
 246         IMFTopologyNode_Release(&topology->nodes.nodes[i]->IMFTopologyNode_iface);
 247     }
 248     free(topology->nodes.nodes);
 249     topology->nodes.nodes = NULL;
 250     topology->nodes.count = 0;
 251     topology->nodes.size = 0;
 252 }
 253
 254 static ULONG WINAPI topology_Release(IMFTopology *iface)
 255 {
 256     struct topology *topology = impl_from_IMFTopology(iface);
 257     ULONG refcount = InterlockedDecrement(&topology->refcount);
 258
 259     TRACE("%p, refcount %lu.\n", iface, refcount);
 260
 261     if (!refcount)
 262     {
 263         if (topology->attributes)
 264             IMFAttributes_Release(topology->attributes);
 265         topology_clear(topology);
 266         free(topology);
 267     }
 268
 269     return refcount;
 270 }
 271
 272 static HRESULT WINAPI topology_GetItem(IMFTopology *iface, REFGUID key, PROPVARIANT *value)
 273 {
 274     struct topology *topology = impl_from_IMFTopology(iface);
 275
 276     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
 277
 278     return IMFAttributes_GetItem(topology->attributes, key, value);
 279 }
 280
 281 static HRESULT WINAPI topology_GetItemType(IMFTopology *iface, REFGUID key, MF_ATTRIBUTE_TYPE *type)
 282 {
 283     struct topology *topology = impl_from_IMFTopology(iface);
 284
 285     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), type);
 286
 287     return IMFAttributes_GetItemType(topology->attributes, key, type);
 288 }
 289
 290 static HRESULT WINAPI topology_CompareItem(IMFTopology *iface, REFGUID key, REFPROPVARIANT value, BOOL *result)
 291 {
 292     struct topology *topology = impl_from_IMFTopology(iface);
 293
 294     TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), value, result);
 295
 296     return IMFAttributes_CompareItem(topology->attributes, key, value, result);
 297 }
 298
 299 static HRESULT WINAPI topology_Compare(IMFTopology *iface, IMFAttributes *theirs, MF_ATTRIBUTES_MATCH_TYPE type,
 300         BOOL *result)
 301 {
 302     struct topology *topology = impl_from_IMFTopology(iface);
 303
 304     TRACE("%p, %p, %d, %p.\n", iface, theirs, type, result);
 305
 306     return IMFAttributes_Compare(topology->attributes, theirs, type, result);
 307 }
 308
 309 static HRESULT WINAPI topology_GetUINT32(IMFTopology *iface, REFGUID key, UINT32 *value)
 310 {
 311     struct topology *topology = impl_from_IMFTopology(iface);
 312
 313     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
 314
 315     return IMFAttributes_GetUINT32(topology->attributes, key, value);
 316 }
 317
 318 static HRESULT WINAPI topology_GetUINT64(IMFTopology *iface, REFGUID key, UINT64 *value)
 319 {
 320     struct topology *topology = impl_from_IMFTopology(iface);
 321
 322     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
 323
 324     return IMFAttributes_GetUINT64(topology->attributes, key, value);
 325 }
 326
 327 static HRESULT WINAPI topology_GetDouble(IMFTopology *iface, REFGUID key, double *value)
 328 {
 329     struct topology *topology = impl_from_IMFTopology(iface);
 330
 331     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
 332
 333     return IMFAttributes_GetDouble(topology->attributes, key, value);
 334 }
 335
 336 static HRESULT WINAPI topology_GetGUID(IMFTopology *iface, REFGUID key, GUID *value)
 337 {
 338     struct topology *topology = impl_from_IMFTopology(iface);
 339
 340     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
 341
 342     return IMFAttributes_GetGUID(topology->attributes, key, value);
 343 }
 344
 345 static HRESULT WINAPI topology_GetStringLength(IMFTopology *iface, REFGUID key, UINT32 *length)
 346 {
 347     struct topology *topology = impl_from_IMFTopology(iface);
 348
 349     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), length);
 350
 351     return IMFAttributes_GetStringLength(topology->attributes, key, length);
 352 }
 353
 354 static HRESULT WINAPI topology_GetString(IMFTopology *iface, REFGUID key, WCHAR *value,
 355         UINT32 size, UINT32 *length)
 356 {
 357     struct topology *topology = impl_from_IMFTopology(iface);
 358
 359     TRACE("%p, %s, %p, %d, %p.\n", iface, debugstr_guid(key), value, size, length);
 360
 361     return IMFAttributes_GetString(topology->attributes, key, value, size, length);
 362 }
 363
 364 static HRESULT WINAPI topology_GetAllocatedString(IMFTopology *iface, REFGUID key,
 365         WCHAR **value, UINT32 *length)
 366 {
 367     struct topology *topology = impl_from_IMFTopology(iface);
 368
 369     TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), value, length);
 370
 371     return IMFAttributes_GetAllocatedString(topology->attributes, key, value, length);
 372 }
 373
 374 static HRESULT WINAPI topology_GetBlobSize(IMFTopology *iface, REFGUID key, UINT32 *size)
 375 {
 376     struct topology *topology = impl_from_IMFTopology(iface);
 377
 378     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), size);
 379
 380     return IMFAttributes_GetBlobSize(topology->attributes, key, size);
 381 }
 382
 383 static HRESULT WINAPI topology_GetBlob(IMFTopology *iface, REFGUID key, UINT8 *buf,
 384         UINT32 bufsize, UINT32 *blobsize)
 385 {
 386     struct topology *topology = impl_from_IMFTopology(iface);
 387
 388     TRACE("%p, %s, %p, %d, %p.\n", iface, debugstr_guid(key), buf, bufsize, blobsize);
 389
 390     return IMFAttributes_GetBlob(topology->attributes, key, buf, bufsize, blobsize);
 391 }
 392
 393 static HRESULT WINAPI topology_GetAllocatedBlob(IMFTopology *iface, REFGUID key, UINT8 **buf, UINT32 *size)
 394 {
 395     struct topology *topology = impl_from_IMFTopology(iface);
 396
 397     TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), buf, size);
 398
 399     return IMFAttributes_GetAllocatedBlob(topology->attributes, key, buf, size);
 400 }
 401
 402 static HRESULT WINAPI topology_GetUnknown(IMFTopology *iface, REFGUID key, REFIID riid, void **ppv)
 403 {
 404     struct topology *topology = impl_from_IMFTopology(iface);
 405
 406     TRACE("%p, %s, %s, %p.\n", iface, debugstr_guid(key), debugstr_guid(riid), ppv);
 407
 408     return IMFAttributes_GetUnknown(topology->attributes, key, riid, ppv);
 409 }
 410
 411 static HRESULT WINAPI topology_SetItem(IMFTopology *iface, REFGUID key, REFPROPVARIANT value)
 412 {
 413     struct topology *topology = impl_from_IMFTopology(iface);
 414
 415     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
 416
 417     return IMFAttributes_SetItem(topology->attributes, key, value);
 418 }
 419
 420 static HRESULT WINAPI topology_DeleteItem(IMFTopology *iface, REFGUID key)
 421 {
 422     struct topology *topology = impl_from_IMFTopology(iface);
 423
 424     TRACE("%p, %s.\n", topology, debugstr_guid(key));
 425
 426     return IMFAttributes_DeleteItem(topology->attributes, key);
 427 }
 428
 429 static HRESULT WINAPI topology_DeleteAllItems(IMFTopology *iface)
 430 {
 431     struct topology *topology = impl_from_IMFTopology(iface);
 432
 433     TRACE("%p.\n", iface);
 434
 435     return IMFAttributes_DeleteAllItems(topology->attributes);
 436 }
 437
 438 static HRESULT WINAPI topology_SetUINT32(IMFTopology *iface, REFGUID key, UINT32 value)
 439 {
 440     struct topology *topology = impl_from_IMFTopology(iface);
 441
 442     TRACE("%p, %s, %d.\n", iface, debugstr_guid(key), value);
 443
 444     return IMFAttributes_SetUINT32(topology->attributes, key, value);
 445 }
 446
 447 static HRESULT WINAPI topology_SetUINT64(IMFTopology *iface, REFGUID key, UINT64 value)
 448 {
 449     struct topology *topology = impl_from_IMFTopology(iface);
 450
 451     TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), wine_dbgstr_longlong(value));
 452
 453     return IMFAttributes_SetUINT64(topology->attributes, key, value);
 454 }
 455
 456 static HRESULT WINAPI topology_SetDouble(IMFTopology *iface, REFGUID key, double value)
 457 {
 458     struct topology *topology = impl_from_IMFTopology(iface);
 459
 460     TRACE("%p, %s, %f.\n", iface, debugstr_guid(key), value);
 461
 462     return IMFAttributes_SetDouble(topology->attributes, key, value);
 463 }
 464
 465 static HRESULT WINAPI topology_SetGUID(IMFTopology *iface, REFGUID key, REFGUID value)
 466 {
 467     struct topology *topology = impl_from_IMFTopology(iface);
 468
 469     TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), debugstr_guid(value));
 470
 471     return IMFAttributes_SetGUID(topology->attributes, key, value);
 472 }
 473
 474 static HRESULT WINAPI topology_SetString(IMFTopology *iface, REFGUID key, const WCHAR *value)
 475 {
 476     struct topology *topology = impl_from_IMFTopology(iface);
 477
 478     TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), debugstr_w(value));
 479
 480     return IMFAttributes_SetString(topology->attributes, key, value);
 481 }
 482
 483 static HRESULT WINAPI topology_SetBlob(IMFTopology *iface, REFGUID key, const UINT8 *buf, UINT32 size)
 484 {
 485     struct topology *topology = impl_from_IMFTopology(iface);
 486
 487     TRACE("%p, %s, %p, %d.\n", iface, debugstr_guid(key), buf, size);
 488
 489     return IMFAttributes_SetBlob(topology->attributes, key, buf, size);
 490 }
 491
 492 static HRESULT WINAPI topology_SetUnknown(IMFTopology *iface, REFGUID key, IUnknown *unknown)
 493 {
 494     struct topology *topology = impl_from_IMFTopology(iface);
 495
 496     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), unknown);
 497
 498     return IMFAttributes_SetUnknown(topology->attributes, key, unknown);
 499 }
 500
 501 static HRESULT WINAPI topology_LockStore(IMFTopology *iface)
 502 {
 503     struct topology *topology = impl_from_IMFTopology(iface);
 504
 505     TRACE("%p.\n", iface);
 506
 507     return IMFAttributes_LockStore(topology->attributes);
 508 }
 509
 510 static HRESULT WINAPI topology_UnlockStore(IMFTopology *iface)
 511 {
 512     struct topology *topology = impl_from_IMFTopology(iface);
 513
 514     TRACE("%p.\n", iface);
 515
 516     return IMFAttributes_UnlockStore(topology->attributes);
 517 }
 518
 519 static HRESULT WINAPI topology_GetCount(IMFTopology *iface, UINT32 *count)
 520 {
 521     struct topology *topology = impl_from_IMFTopology(iface);
 522
 523     TRACE("%p, %p.\n", iface, count);
 524
 525     return IMFAttributes_GetCount(topology->attributes, count);
 526 }
 527
 528 static HRESULT WINAPI topology_GetItemByIndex(IMFTopology *iface, UINT32 index, GUID *key, PROPVARIANT *value)
 529 {
 530     struct topology *topology = impl_from_IMFTopology(iface);
 531
 532     TRACE("%p, %u, %p, %p.\n", iface, index, key, value);
 533
 534     return IMFAttributes_GetItemByIndex(topology->attributes, index, key, value);
 535 }
 536
 537 static HRESULT WINAPI topology_CopyAllItems(IMFTopology *iface, IMFAttributes *dest)
 538 {
 539     struct topology *topology = impl_from_IMFTopology(iface);
 540
 541     TRACE("%p, %p.\n", iface, dest);
 542
 543     return IMFAttributes_CopyAllItems(topology->attributes, dest);
 544 }
 545
 546 static HRESULT WINAPI topology_GetTopologyID(IMFTopology *iface, TOPOID *id)
 547 {
 548     struct topology *topology = impl_from_IMFTopology(iface);
 549
 550     TRACE("%p, %p.\n", iface, id);
 551
 552     if (!id)
 553         return E_POINTER;
 554
 555     *id = topology->id;
 556
 557     return S_OK;
 558 }
 559
 560 static HRESULT topology_get_node_by_id(const struct topology *topology, TOPOID id, struct topology_node **node)
 561 {
 562     size_t i = 0;
 563
 564     for (i = 0; i < topology->nodes.count; ++i)
 565     {
 566         if (topology->nodes.nodes[i]->id == id)
 567         {
 568             *node = topology->nodes.nodes[i];
 569             return S_OK;
 570         }
 571     }
 572
 573     return MF_E_NOT_FOUND;
 574 }
 575
 576 static HRESULT topology_add_node(struct topology *topology, struct topology_node *node)
 577 {
 578     struct topology_node *match;
 579
 580     if (!node)
 581         return E_POINTER;
 582
 583     if (SUCCEEDED(topology_get_node_by_id(topology, node->id, &match)))
 584         return E_INVALIDARG;
 585
 586     if (!mf_array_reserve((void **)&topology->nodes.nodes, &topology->nodes.size, topology->nodes.count + 1,
 587             sizeof(*topology->nodes.nodes)))
 588     {
 589         return E_OUTOFMEMORY;
 590     }
 591
 592     topology->nodes.nodes[topology->nodes.count++] = node;
 593     IMFTopologyNode_AddRef(&node->IMFTopologyNode_iface);
 594
 595     return S_OK;
 596 }
 597
 598 static HRESULT WINAPI topology_AddNode(IMFTopology *iface, IMFTopologyNode *node_iface)
 599 {
 600     struct topology *topology = impl_from_IMFTopology(iface);
 601     struct topology_node *node = unsafe_impl_from_IMFTopologyNode(node_iface);
 602
 603     TRACE("%p, %p.\n", iface, node_iface);
 604
 605     return topology_add_node(topology, node);
 606 }
 607
 608 static HRESULT WINAPI topology_RemoveNode(IMFTopology *iface, IMFTopologyNode *node)
 609 {
 610     struct topology *topology = impl_from_IMFTopology(iface);
 611     size_t i, count;
 612
 613     TRACE("%p, %p.\n", iface, node);
 614
 615     for (i = 0; i < topology->nodes.count; ++i)
 616     {
 617         if (&topology->nodes.nodes[i]->IMFTopologyNode_iface == node)
 618         {
 619             topology_node_disconnect(topology->nodes.nodes[i]);
 620             IMFTopologyNode_Release(&topology->nodes.nodes[i]->IMFTopologyNode_iface);
 621             count = topology->nodes.count - i - 1;
 622             if (count)
 623             {
 624                 memmove(&topology->nodes.nodes[i], &topology->nodes.nodes[i + 1],
 625                         count * sizeof(*topology->nodes.nodes));
 626             }
 627             topology->nodes.count--;
 628             return S_OK;
 629         }
 630     }
 631
 632     return E_INVALIDARG;
 633 }
 634
 635 static HRESULT WINAPI topology_GetNodeCount(IMFTopology *iface, WORD *count)
 636 {
 637     struct topology *topology = impl_from_IMFTopology(iface);
 638
 639     TRACE("%p, %p.\n", iface, count);
 640
 641     if (!count)
 642         return E_POINTER;
 643
 644     *count = topology->nodes.count;
 645
 646     return S_OK;
 647 }
 648
 649 static HRESULT WINAPI topology_GetNode(IMFTopology *iface, WORD index, IMFTopologyNode **node)
 650 {
 651     struct topology *topology = impl_from_IMFTopology(iface);
 652
 653     TRACE("%p, %u, %p.\n", iface, index, node);
 654
 655     if (!node)
 656         return E_POINTER;
 657
 658     if (index >= topology->nodes.count)
 659         return MF_E_INVALIDINDEX;
 660
 661     *node = &topology->nodes.nodes[index]->IMFTopologyNode_iface;
 662     IMFTopologyNode_AddRef(*node);
 663
 664     return S_OK;
 665 }
 666
 667 static HRESULT WINAPI topology_Clear(IMFTopology *iface)
 668 {
 669     struct topology *topology = impl_from_IMFTopology(iface);
 670
 671     TRACE("%p.\n", iface);
 672
 673     topology_clear(topology);
 674     return S_OK;
 675 }
 676
 677 static HRESULT WINAPI topology_CloneFrom(IMFTopology *iface, IMFTopology *src)
 678 {
 679     struct topology *topology = impl_from_IMFTopology(iface);
 680     struct topology *src_topology = unsafe_impl_from_IMFTopology(src);
 681     struct topology_node *node;
 682     size_t i, j;
 683     HRESULT hr;
 684
 685     TRACE("%p, %p.\n", iface, src);
 686
 687     topology_clear(topology);
 688
 689     /* Clone nodes. */
 690     for (i = 0; i < src_topology->nodes.count; ++i)
 691     {
 692         if (FAILED(hr = create_topology_node(src_topology->nodes.nodes[i]->node_type, &node)))
 693         {
 694             WARN("Failed to create a node, hr %#lx.\n", hr);
 695             break;
 696         }
 697
 698         if (SUCCEEDED(hr = IMFTopologyNode_CloneFrom(&node->IMFTopologyNode_iface,
 699                 &src_topology->nodes.nodes[i]->IMFTopologyNode_iface)))
 700         {
 701             topology_add_node(topology, node);
 702         }
 703
 704         IMFTopologyNode_Release(&node->IMFTopologyNode_iface);
 705     }
 706
 707     /* Clone connections. */
 708     for (i = 0; i < src_topology->nodes.count; ++i)
 709     {
 710         const struct node_streams *outputs = &src_topology->nodes.nodes[i]->outputs;
 711
 712         for (j = 0; j < outputs->count; ++j)
 713         {
 714             DWORD input_index = outputs->streams[j].connection_stream;
 715             TOPOID id;
 716
 717             if (!outputs->streams[j].connection)
 718                 continue;
 719
 720             id = outputs->streams[j].connection->id;
 721
 722             /* Skip node lookup in destination topology, assuming same node order. */
 723             if (SUCCEEDED(hr = topology_get_node_by_id(topology, id, &node)))
 724                 topology_node_connect_output(topology->nodes.nodes[i], j, node, input_index);
 725         }
 726     }
 727
 728     /* Copy attributes and id. */
 729     hr = IMFTopology_CopyAllItems(src, (IMFAttributes *)&topology->IMFTopology_iface);
 730     if (SUCCEEDED(hr))
 731         topology->id = src_topology->id;
 732
 733     return S_OK;
 734 }
 735
 736 static HRESULT WINAPI topology_GetNodeByID(IMFTopology *iface, TOPOID id, IMFTopologyNode **ret)
 737 {
 738     struct topology *topology = impl_from_IMFTopology(iface);
 739     struct topology_node *node;
 740     HRESULT hr;
 741
 742     TRACE("%p, %p.\n", iface, ret);
 743
 744     if (SUCCEEDED(hr = topology_get_node_by_id(topology, id, &node)))
 745     {
 746         *ret = &node->IMFTopologyNode_iface;
 747         IMFTopologyNode_AddRef(*ret);
 748     }
 749     else
 750         *ret = NULL;
 751
 752     return hr;
 753 }
 754
 755 static HRESULT topology_get_node_collection(const struct topology *topology, MF_TOPOLOGY_TYPE node_type,
 756         IMFCollection **collection)
 757 {
 758     HRESULT hr;
 759     size_t i;
 760
 761     if (!collection)
 762         return E_POINTER;
 763
 764     if (FAILED(hr = MFCreateCollection(collection)))
 765         return hr;
 766
 767     for (i = 0; i < topology->nodes.count; ++i)
 768     {
 769         if (topology->nodes.nodes[i]->node_type == node_type)
 770         {
 771             if (FAILED(hr = IMFCollection_AddElement(*collection,
 772                     (IUnknown *)&topology->nodes.nodes[i]->IMFTopologyNode_iface)))
 773             {
 774                 IMFCollection_Release(*collection);
 775                 *collection = NULL;
 776                 break;
 777             }
 778         }
 779     }
 780
 781     return hr;
 782 }
 783
 784 static HRESULT WINAPI topology_GetSourceNodeCollection(IMFTopology *iface, IMFCollection **collection)
 785 {
 786     struct topology *topology = impl_from_IMFTopology(iface);
 787
 788     TRACE("%p, %p.\n", iface, collection);
 789
 790     return topology_get_node_collection(topology, MF_TOPOLOGY_SOURCESTREAM_NODE, collection);
 791 }
 792
 793 static HRESULT WINAPI topology_GetOutputNodeCollection(IMFTopology *iface, IMFCollection **collection)
 794 {
 795     struct topology *topology = impl_from_IMFTopology(iface);
 796
 797     TRACE("%p, %p.\n", iface, collection);
 798
 799     return topology_get_node_collection(topology, MF_TOPOLOGY_OUTPUT_NODE, collection);
 800 }
 801
 802 static const IMFTopologyVtbl topologyvtbl =
 803 {
 804     topology_QueryInterface,
 805     topology_AddRef,
 806     topology_Release,
 807     topology_GetItem,
 808     topology_GetItemType,
 809     topology_CompareItem,
 810     topology_Compare,
 811     topology_GetUINT32,
 812     topology_GetUINT64,
 813     topology_GetDouble,
 814     topology_GetGUID,
 815     topology_GetStringLength,
 816     topology_GetString,
 817     topology_GetAllocatedString,
 818     topology_GetBlobSize,
 819     topology_GetBlob,
 820     topology_GetAllocatedBlob,
 821     topology_GetUnknown,
 822     topology_SetItem,
 823     topology_DeleteItem,
 824     topology_DeleteAllItems,
 825     topology_SetUINT32,
 826     topology_SetUINT64,
 827     topology_SetDouble,
 828     topology_SetGUID,
 829     topology_SetString,
 830     topology_SetBlob,
 831     topology_SetUnknown,
 832     topology_LockStore,
 833     topology_UnlockStore,
 834     topology_GetCount,
 835     topology_GetItemByIndex,
 836     topology_CopyAllItems,
 837     topology_GetTopologyID,
 838     topology_AddNode,
 839     topology_RemoveNode,
 840     topology_GetNodeCount,
 841     topology_GetNode,
 842     topology_Clear,
 843     topology_CloneFrom,
 844     topology_GetNodeByID,
 845     topology_GetSourceNodeCollection,
 846     topology_GetOutputNodeCollection,
 847 };
 848
 849 static struct topology *unsafe_impl_from_IMFTopology(IMFTopology *iface)
 850 {
 851     if (!iface || iface->lpVtbl != &topologyvtbl)
 852         return NULL;
 853     return impl_from_IMFTopology(iface);
 854 }
 855
 856 static TOPOID topology_generate_id(void)
 857 {
 858     TOPOID old;
 859
 860     do
 861     {
 862         old = next_topology_id;
 863     }
 864     while (InterlockedCompareExchange64((LONG64 *)&next_topology_id, old + 1, old) != old);
 865
 866     return next_topology_id;
 867 }
 868
 869 /***********************************************************************
 870  *      MFCreateTopology (mf.@)
 871  */
 872 HRESULT WINAPI MFCreateTopology(IMFTopology **topology)
 873 {
 874     struct topology *object;
 875     HRESULT hr;
 876
 877     TRACE("%p.\n", topology);
 878
 879     if (!topology)
 880         return E_POINTER;
 881
 882     if (!(object = calloc(1, sizeof(*object))))
 883         return E_OUTOFMEMORY;
 884
 885     object->IMFTopology_iface.lpVtbl = &topologyvtbl;
 886     object->refcount = 1;
 887
 888     hr = MFCreateAttributes(&object->attributes, 0);
 889     if (FAILED(hr))
 890     {
 891         IMFTopology_Release(&object->IMFTopology_iface);
 892         return hr;
 893     }
 894
 895     object->id = topology_generate_id();
 896
 897     *topology = &object->IMFTopology_iface;
 898
 899     return S_OK;
 900 }
 901
 902 static HRESULT WINAPI topology_node_QueryInterface(IMFTopologyNode *iface, REFIID riid, void **out)
 903 {
 904     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 905
 906     TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), out);
 907
 908     if (IsEqualIID(riid, &IID_IMFTopologyNode) ||
 909             IsEqualIID(riid, &IID_IMFAttributes) ||
 910             IsEqualIID(riid, &IID_IUnknown))
 911     {
 912         *out = &node->IMFTopologyNode_iface;
 913         IMFTopologyNode_AddRef(iface);
 914         return S_OK;
 915     }
 916
 917     WARN("Unsupported interface %s.\n", debugstr_guid(riid));
 918     *out = NULL;
 919
 920     return E_NOINTERFACE;
 921 }
 922
 923 static ULONG WINAPI topology_node_AddRef(IMFTopologyNode *iface)
 924 {
 925     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 926     ULONG refcount = InterlockedIncrement(&node->refcount);
 927
 928     TRACE("%p, refcount %lu.\n", iface, refcount);
 929
 930     return refcount;
 931 }
 932
 933 static ULONG WINAPI topology_node_Release(IMFTopologyNode *iface)
 934 {
 935     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 936     ULONG refcount = InterlockedDecrement(&node->refcount);
 937     unsigned int i;
 938
 939     TRACE("%p, refcount %lu.\n", iface, refcount);
 940
 941     if (!refcount)
 942     {
 943         if (node->object)
 944             IUnknown_Release(node->object);
 945         if (node->input_type)
 946             IMFMediaType_Release(node->input_type);
 947         for (i = 0; i < node->inputs.count; ++i)
 948         {
 949             if (node->inputs.streams[i].preferred_type)
 950                 IMFMediaType_Release(node->inputs.streams[i].preferred_type);
 951         }
 952         for (i = 0; i < node->outputs.count; ++i)
 953         {
 954             if (node->outputs.streams[i].preferred_type)
 955                 IMFMediaType_Release(node->outputs.streams[i].preferred_type);
 956         }
 957         free(node->inputs.streams);
 958         free(node->outputs.streams);
 959         IMFAttributes_Release(node->attributes);
 960         DeleteCriticalSection(&node->cs);
 961         free(node);
 962     }
 963
 964     return refcount;
 965 }
 966
 967 static HRESULT WINAPI topology_node_GetItem(IMFTopologyNode *iface, REFGUID key, PROPVARIANT *value)
 968 {
 969     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 970
 971     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
 972
 973     return IMFAttributes_GetItem(node->attributes, key, value);
 974 }
 975
 976 static HRESULT WINAPI topology_node_GetItemType(IMFTopologyNode *iface, REFGUID key, MF_ATTRIBUTE_TYPE *type)
 977 {
 978     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 979
 980     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), type);
 981
 982     return IMFAttributes_GetItemType(node->attributes, key, type);
 983 }
 984
 985 static HRESULT WINAPI topology_node_CompareItem(IMFTopologyNode *iface, REFGUID key, REFPROPVARIANT value, BOOL *result)
 986 {
 987     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 988
 989     TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), value, result);
 990
 991     return IMFAttributes_CompareItem(node->attributes, key, value, result);
 992 }
 993
 994 static HRESULT WINAPI topology_node_Compare(IMFTopologyNode *iface, IMFAttributes *theirs,
 995         MF_ATTRIBUTES_MATCH_TYPE type, BOOL *result)
 996 {
 997     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 998
 999     TRACE("%p, %p, %d, %p.\n", iface, theirs, type, result);
1000
1001     return IMFAttributes_Compare(node->attributes, theirs, type, result);
1002 }
1003
1004 static HRESULT WINAPI topology_node_GetUINT32(IMFTopologyNode *iface, REFGUID key, UINT32 *value)
1005 {
1006     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1007
1008     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
1009
1010     return IMFAttributes_GetUINT32(node->attributes, key, value);
1011 }
1012
1013 static HRESULT WINAPI topology_node_GetUINT64(IMFTopologyNode *iface, REFGUID key, UINT64 *value)
1014 {
1015     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1016
1017     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
1018
1019     return IMFAttributes_GetUINT64(node->attributes, key, value);
1020 }
1021
1022 static HRESULT WINAPI topology_node_GetDouble(IMFTopologyNode *iface, REFGUID key, double *value)
1023 {
1024     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1025
1026     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
1027
1028     return IMFAttributes_GetDouble(node->attributes, key, value);
1029 }
1030
1031 static HRESULT WINAPI topology_node_GetGUID(IMFTopologyNode *iface, REFGUID key, GUID *value)
1032 {
1033     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1034
1035     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
1036
1037     return IMFAttributes_GetGUID(node->attributes, key, value);
1038 }
1039
1040 static HRESULT WINAPI topology_node_GetStringLength(IMFTopologyNode *iface, REFGUID key, UINT32 *length)
1041 {
1042     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1043
1044     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), length);
1045
1046     return IMFAttributes_GetStringLength(node->attributes, key, length);
1047 }
1048
1049 static HRESULT WINAPI topology_node_GetString(IMFTopologyNode *iface, REFGUID key, WCHAR *value,
1050         UINT32 size, UINT32 *length)
1051 {
1052     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1053
1054     TRACE("%p, %s, %p, %d, %p.\n", iface, debugstr_guid(key), value, size, length);
1055
1056     return IMFAttributes_GetString(node->attributes, key, value, size, length);
1057 }
1058
1059 static HRESULT WINAPI topology_node_GetAllocatedString(IMFTopologyNode *iface, REFGUID key,
1060         WCHAR **value, UINT32 *length)
1061 {
1062     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1063
1064     TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), value, length);
1065
1066     return IMFAttributes_GetAllocatedString(node->attributes, key, value, length);
1067 }
1068
1069 static HRESULT WINAPI topology_node_GetBlobSize(IMFTopologyNode *iface, REFGUID key, UINT32 *size)
1070 {
1071     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1072
1073     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), size);
1074
1075     return IMFAttributes_GetBlobSize(node->attributes, key, size);
1076 }
1077
1078 static HRESULT WINAPI topology_node_GetBlob(IMFTopologyNode *iface, REFGUID key, UINT8 *buf,
1079         UINT32 bufsize, UINT32 *blobsize)
1080 {
1081     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1082
1083     TRACE("%p, %s, %p, %d, %p.\n", iface, debugstr_guid(key), buf, bufsize, blobsize);
1084
1085     return IMFAttributes_GetBlob(node->attributes, key, buf, bufsize, blobsize);
1086 }
1087
1088 static HRESULT WINAPI topology_node_GetAllocatedBlob(IMFTopologyNode *iface, REFGUID key, UINT8 **buf, UINT32 *size)
1089 {
1090     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1091
1092     TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), buf, size);
1093
1094     return IMFAttributes_GetAllocatedBlob(node->attributes, key, buf, size);
1095 }
1096
1097 static HRESULT WINAPI topology_node_GetUnknown(IMFTopologyNode *iface, REFGUID key, REFIID riid, void **ppv)
1098 {
1099     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1100
1101     TRACE("%p, %s, %s, %p.\n", iface, debugstr_guid(key), debugstr_guid(riid), ppv);
1102
1103     return IMFAttributes_GetUnknown(node->attributes, key, riid, ppv);
1104 }
1105
1106 static HRESULT WINAPI topology_node_SetItem(IMFTopologyNode *iface, REFGUID key, REFPROPVARIANT value)
1107 {
1108     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1109
1110     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
1111
1112     return IMFAttributes_SetItem(node->attributes, key, value);
1113 }
1114
1115 static HRESULT WINAPI topology_node_DeleteItem(IMFTopologyNode *iface, REFGUID key)
1116 {
1117     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1118
1119     TRACE("%p, %s.\n", iface, debugstr_guid(key));
1120
1121     return IMFAttributes_DeleteItem(node->attributes, key);
1122 }
1123
1124 static HRESULT WINAPI topology_node_DeleteAllItems(IMFTopologyNode *iface)
1125 {
1126     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1127
1128     TRACE("%p.\n", iface);
1129
1130     return IMFAttributes_DeleteAllItems(node->attributes);
1131 }
1132
1133 static HRESULT WINAPI topology_node_SetUINT32(IMFTopologyNode *iface, REFGUID key, UINT32 value)
1134 {
1135     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1136
1137     TRACE("%p, %s, %d.\n", iface, debugstr_guid(key), value);
1138
1139     return IMFAttributes_SetUINT32(node->attributes, key, value);
1140 }
1141
1142 static HRESULT WINAPI topology_node_SetUINT64(IMFTopologyNode *iface, REFGUID key, UINT64 value)
1143 {
1144     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1145
1146     TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), wine_dbgstr_longlong(value));
1147
1148     return IMFAttributes_SetUINT64(node->attributes, key, value);
1149 }
1150
1151 static HRESULT WINAPI topology_node_SetDouble(IMFTopologyNode *iface, REFGUID key, double value)
1152 {
1153     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1154
1155     TRACE("%p, %s, %f.\n", iface, debugstr_guid(key), value);
1156
1157     return IMFAttributes_SetDouble(node->attributes, key, value);
1158 }
1159
1160 static HRESULT WINAPI topology_node_SetGUID(IMFTopologyNode *iface, REFGUID key, REFGUID value)
1161 {
1162     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1163
1164     TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), debugstr_guid(value));
1165
1166     return IMFAttributes_SetGUID(node->attributes, key, value);
1167 }
1168
1169 static HRESULT WINAPI topology_node_SetString(IMFTopologyNode *iface, REFGUID key, const WCHAR *value)
1170 {
1171     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1172
1173     TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), debugstr_w(value));
1174
1175     return IMFAttributes_SetString(node->attributes, key, value);
1176 }
1177
1178 static HRESULT WINAPI topology_node_SetBlob(IMFTopologyNode *iface, REFGUID key, const UINT8 *buf, UINT32 size)
1179 {
1180     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1181
1182     TRACE("%p, %s, %p, %d.\n", iface, debugstr_guid(key), buf, size);
1183
1184     return IMFAttributes_SetBlob(node->attributes, key, buf, size);
1185 }
1186
1187 static HRESULT WINAPI topology_node_SetUnknown(IMFTopologyNode *iface, REFGUID key, IUnknown *unknown)
1188 {
1189     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1190
1191     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), unknown);
1192
1193     return IMFAttributes_SetUnknown(node->attributes, key, unknown);
1194 }
1195
1196 static HRESULT WINAPI topology_node_LockStore(IMFTopologyNode *iface)
1197 {
1198     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1199
1200     TRACE("%p.\n", iface);
1201
1202     return IMFAttributes_LockStore(node->attributes);
1203 }
1204
1205 static HRESULT WINAPI topology_node_UnlockStore(IMFTopologyNode *iface)
1206 {
1207     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1208
1209     TRACE("%p.\n", iface);
1210
1211     return IMFAttributes_UnlockStore(node->attributes);
1212 }
1213
1214 static HRESULT WINAPI topology_node_GetCount(IMFTopologyNode *iface, UINT32 *count)
1215 {
1216     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1217
1218     TRACE("%p, %p.\n", iface, count);
1219
1220     return IMFAttributes_GetCount(node->attributes, count);
1221 }
1222
1223 static HRESULT WINAPI topology_node_GetItemByIndex(IMFTopologyNode *iface, UINT32 index, GUID *key, PROPVARIANT *value)
1224 {
1225     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1226
1227     TRACE("%p, %u, %p, %p.\n", iface, index, key, value);
1228
1229     return IMFAttributes_GetItemByIndex(node->attributes, index, key, value);
1230 }
1231
1232 static HRESULT WINAPI topology_node_CopyAllItems(IMFTopologyNode *iface, IMFAttributes *dest)
1233 {
1234     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1235
1236     TRACE("%p, %p.\n", iface, dest);
1237
1238     return IMFAttributes_CopyAllItems(node->attributes, dest);
1239 }
1240
1241 static HRESULT topology_node_set_object(struct topology_node *node, IUnknown *object)
1242 {
1243     static const GUID *iids[3] = { &IID_IPersist, &IID_IPersistStorage, &IID_IPersistPropertyBag };
1244     IPersist *persist = NULL;
1245     BOOL has_object_id;
1246     GUID object_id;
1247     unsigned int i;
1248     HRESULT hr;
1249
1250     has_object_id = IMFAttributes_GetGUID(node->attributes, &MF_TOPONODE_TRANSFORM_OBJECTID, &object_id) == S_OK;
1251
1252     if (object && !has_object_id)
1253     {
1254         for (i = 0; i < ARRAY_SIZE(iids); ++i)
1255         {
1256             persist = NULL;
1257             if (SUCCEEDED(hr = IUnknown_QueryInterface(object, iids[i], (void **)&persist)))
1258                 break;
1259         }
1260
1261         if (persist)
1262         {
1263             if (FAILED(hr = IPersist_GetClassID(persist, &object_id)))
1264             {
1265                 IPersist_Release(persist);
1266                 persist = NULL;
1267             }
1268         }
1269     }
1270
1271     EnterCriticalSection(&node->cs);
1272
1273     if (node->object)
1274         IUnknown_Release(node->object);
1275     node->object = object;
1276     if (node->object)
1277         IUnknown_AddRef(node->object);
1278
1279     if (persist)
1280         IMFAttributes_SetGUID(node->attributes, &MF_TOPONODE_TRANSFORM_OBJECTID, &object_id);
1281
1282     LeaveCriticalSection(&node->cs);
1283
1284     if (persist)
1285         IPersist_Release(persist);
1286
1287     return S_OK;
1288 }
1289
1290 static HRESULT WINAPI topology_node_SetObject(IMFTopologyNode *iface, IUnknown *object)
1291 {
1292     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1293
1294     TRACE("%p, %p.\n", iface, object);
1295
1296     return topology_node_set_object(node, object);
1297 }
1298
1299 static HRESULT WINAPI topology_node_GetObject(IMFTopologyNode *iface, IUnknown **object)
1300 {
1301     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1302
1303     TRACE("%p, %p.\n", iface, object);
1304
1305     if (!object)
1306         return E_POINTER;
1307
1308     EnterCriticalSection(&node->cs);
1309
1310     *object = node->object;
1311     if (*object)
1312         IUnknown_AddRef(*object);
1313
1314     LeaveCriticalSection(&node->cs);
1315
1316     return *object ? S_OK : E_FAIL;
1317 }
1318
1319 static HRESULT WINAPI topology_node_GetNodeType(IMFTopologyNode *iface, MF_TOPOLOGY_TYPE *node_type)
1320 {
1321     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1322
1323     TRACE("%p, %p.\n", iface, node_type);
1324
1325     *node_type = node->node_type;
1326
1327     return S_OK;
1328 }
1329
1330 static HRESULT WINAPI topology_node_GetTopoNodeID(IMFTopologyNode *iface, TOPOID *id)
1331 {
1332     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1333
1334     TRACE("%p, %p.\n", iface, id);
1335
1336     *id = node->id;
1337
1338     return S_OK;
1339 }
1340
1341 static HRESULT WINAPI topology_node_SetTopoNodeID(IMFTopologyNode *iface, TOPOID id)
1342 {
1343     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1344
1345     TRACE("%p, %s.\n", iface, wine_dbgstr_longlong(id));
1346
1347     node->id = id;
1348
1349     return S_OK;
1350 }
1351
1352 static HRESULT WINAPI topology_node_GetInputCount(IMFTopologyNode *iface, DWORD *count)
1353 {
1354     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1355
1356     TRACE("%p, %p.\n", iface, count);
1357
1358     *count = node->inputs.count;
1359
1360     return S_OK;
1361 }
1362
1363 static HRESULT WINAPI topology_node_GetOutputCount(IMFTopologyNode *iface, DWORD *count)
1364 {
1365     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1366
1367     TRACE("%p, %p.\n", iface, count);
1368
1369     *count = node->outputs.count;
1370
1371     return S_OK;
1372 }
1373
1374 static void topology_node_set_stream_type(struct node_stream *stream, IMFMediaType *mediatype)
1375 {
1376     if (stream->preferred_type)
1377         IMFMediaType_Release(stream->preferred_type);
1378     stream->preferred_type = mediatype;
1379     if (stream->preferred_type)
1380         IMFMediaType_AddRef(stream->preferred_type);
1381 }
1382
1383 static HRESULT topology_node_connect_output(struct topology_node *node, DWORD output_index,
1384         struct topology_node *connection, DWORD input_index)
1385 {
1386     struct node_stream *stream;
1387     HRESULT hr;
1388
1389     if (node->node_type == MF_TOPOLOGY_OUTPUT_NODE || connection->node_type == MF_TOPOLOGY_SOURCESTREAM_NODE)
1390          return E_FAIL;
1391
1392     EnterCriticalSection(&node->cs);
1393     EnterCriticalSection(&connection->cs);
1394
1395     topology_node_disconnect_output(node, output_index);
1396     if (input_index < connection->inputs.count)
1397     {
1398         stream = &connection->inputs.streams[input_index];
1399         if (stream->connection)
1400             topology_node_disconnect_output(stream->connection, stream->connection_stream);
1401     }
1402
1403     hr = topology_node_reserve_streams(&node->outputs, output_index);
1404     if (SUCCEEDED(hr))
1405     {
1406         size_t old_count = connection->inputs.count;
1407         hr = topology_node_reserve_streams(&connection->inputs, input_index);
1408         if (SUCCEEDED(hr) && !old_count && connection->input_type)
1409         {
1410             topology_node_set_stream_type(connection->inputs.streams, connection->input_type);
1411             IMFMediaType_Release(connection->input_type);
1412             connection->input_type = NULL;
1413         }
1414     }
1415
1416     if (SUCCEEDED(hr))
1417     {
1418         node->outputs.streams[output_index].connection = connection;
1419         IMFTopologyNode_AddRef(&node->outputs.streams[output_index].connection->IMFTopologyNode_iface);
1420         node->outputs.streams[output_index].connection_stream = input_index;
1421         connection->inputs.streams[input_index].connection = node;
1422         IMFTopologyNode_AddRef(&connection->inputs.streams[input_index].connection->IMFTopologyNode_iface);
1423         connection->inputs.streams[input_index].connection_stream = output_index;
1424     }
1425
1426     LeaveCriticalSection(&connection->cs);
1427     LeaveCriticalSection(&node->cs);
1428
1429     return hr;
1430 }
1431
1432 static HRESULT WINAPI topology_node_ConnectOutput(IMFTopologyNode *iface, DWORD output_index,
1433         IMFTopologyNode *peer, DWORD input_index)
1434 {
1435     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1436     struct topology_node *connection = unsafe_impl_from_IMFTopologyNode(peer);
1437
1438     TRACE("%p, %lu, %p, %lu.\n", iface, output_index, peer, input_index);
1439
1440     if (!connection)
1441     {
1442         WARN("External node implementations are not supported.\n");
1443         return E_UNEXPECTED;
1444     }
1445
1446     return topology_node_connect_output(node, output_index, connection, input_index);
1447 }
1448
1449 static HRESULT WINAPI topology_node_DisconnectOutput(IMFTopologyNode *iface, DWORD output_index)
1450 {
1451     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1452
1453     TRACE("%p, %lu.\n", iface, output_index);
1454
1455     return topology_node_disconnect_output(node, output_index);
1456 }
1457
1458 static HRESULT WINAPI topology_node_GetInput(IMFTopologyNode *iface, DWORD input_index, IMFTopologyNode **ret,
1459         DWORD *output_index)
1460 {
1461     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1462     HRESULT hr = S_OK;
1463
1464     TRACE("%p, %lu, %p, %p.\n", iface, input_index, ret, output_index);
1465
1466     EnterCriticalSection(&node->cs);
1467
1468     if (input_index < node->inputs.count)
1469     {
1470         const struct node_stream *stream = &node->inputs.streams[input_index];
1471
1472         if (stream->connection)
1473         {
1474             *ret = &stream->connection->IMFTopologyNode_iface;
1475             IMFTopologyNode_AddRef(*ret);
1476             *output_index = stream->connection_stream;
1477         }
1478         else
1479             hr = MF_E_NOT_FOUND;
1480     }
1481     else
1482         hr = E_INVALIDARG;
1483
1484     LeaveCriticalSection(&node->cs);
1485
1486     return hr;
1487 }
1488
1489 static HRESULT WINAPI topology_node_GetOutput(IMFTopologyNode *iface, DWORD output_index, IMFTopologyNode **ret,
1490         DWORD *input_index)
1491 {
1492     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1493     HRESULT hr = S_OK;
1494
1495     TRACE("%p, %lu, %p, %p.\n", iface, output_index, ret, input_index);
1496
1497     EnterCriticalSection(&node->cs);
1498
1499     if (output_index < node->outputs.count)
1500     {
1501         const struct node_stream *stream = &node->outputs.streams[output_index];
1502
1503         if (stream->connection)
1504         {
1505             *ret = &stream->connection->IMFTopologyNode_iface;
1506             IMFTopologyNode_AddRef(*ret);
1507             *input_index = stream->connection_stream;
1508         }
1509         else
1510             hr = MF_E_NOT_FOUND;
1511     }
1512     else
1513         hr = E_INVALIDARG;
1514
1515     LeaveCriticalSection(&node->cs);
1516
1517     return hr;
1518 }
1519
1520 static HRESULT WINAPI topology_node_SetOutputPrefType(IMFTopologyNode *iface, DWORD index, IMFMediaType *mediatype)
1521 {
1522     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1523     HRESULT hr = S_OK;
1524
1525     TRACE("%p, %lu, %p.\n", iface, index, mediatype);
1526
1527     EnterCriticalSection(&node->cs);
1528
1529     if (node->node_type != MF_TOPOLOGY_OUTPUT_NODE)
1530     {
1531         if (SUCCEEDED(hr = topology_node_reserve_streams(&node->outputs, index)))
1532             topology_node_set_stream_type(&node->outputs.streams[index], mediatype);
1533     }
1534     else
1535         hr = E_NOTIMPL;
1536
1537     LeaveCriticalSection(&node->cs);
1538
1539     return hr;
1540 }
1541
1542 static HRESULT topology_node_get_pref_type(struct node_streams *streams, unsigned int index, IMFMediaType **mediatype)
1543 {
1544     *mediatype = streams->streams[index].preferred_type;
1545     if (*mediatype)
1546     {
1547         IMFMediaType_AddRef(*mediatype);
1548         return S_OK;
1549     }
1550
1551     return E_FAIL;
1552 }
1553
1554 static HRESULT WINAPI topology_node_GetOutputPrefType(IMFTopologyNode *iface, DWORD index, IMFMediaType **mediatype)
1555 {
1556     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1557     HRESULT hr = S_OK;
1558
1559     TRACE("%p, %lu, %p.\n", iface, index, mediatype);
1560
1561     EnterCriticalSection(&node->cs);
1562
1563     if (index < node->outputs.count)
1564         hr = topology_node_get_pref_type(&node->outputs, index, mediatype);
1565     else
1566         hr = E_INVALIDARG;
1567
1568     LeaveCriticalSection(&node->cs);
1569
1570     return hr;
1571 }
1572
1573 static HRESULT WINAPI topology_node_SetInputPrefType(IMFTopologyNode *iface, DWORD index, IMFMediaType *mediatype)
1574 {
1575     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1576     HRESULT hr = S_OK;
1577
1578     TRACE("%p, %lu, %p.\n", iface, index, mediatype);
1579
1580     EnterCriticalSection(&node->cs);
1581
1582     switch (node->node_type)
1583     {
1584         case MF_TOPOLOGY_TEE_NODE:
1585             if (index)
1586             {
1587                 hr = MF_E_INVALIDTYPE;
1588                 break;
1589             }
1590             if (node->inputs.count)
1591                 topology_node_set_stream_type(&node->inputs.streams[index], mediatype);
1592             else
1593             {
1594                 if (node->input_type)
1595                     IMFMediaType_Release(node->input_type);
1596                 node->input_type = mediatype;
1597                 if (node->input_type)
1598                     IMFMediaType_AddRef(node->input_type);
1599             }
1600             break;
1601         case MF_TOPOLOGY_SOURCESTREAM_NODE:
1602             hr = E_NOTIMPL;
1603             break;
1604         default:
1605             if (SUCCEEDED(hr = topology_node_reserve_streams(&node->inputs, index)))
1606                 topology_node_set_stream_type(&node->inputs.streams[index], mediatype);
1607     }
1608
1609     LeaveCriticalSection(&node->cs);
1610
1611     return hr;
1612 }
1613
1614 static HRESULT WINAPI topology_node_GetInputPrefType(IMFTopologyNode *iface, DWORD index, IMFMediaType **mediatype)
1615 {
1616     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1617     HRESULT hr = S_OK;
1618
1619     TRACE("%p, %lu, %p.\n", iface, index, mediatype);
1620
1621     EnterCriticalSection(&node->cs);
1622
1623     if (index < node->inputs.count)
1624     {
1625         hr = topology_node_get_pref_type(&node->inputs, index, mediatype);
1626     }
1627     else if (node->node_type == MF_TOPOLOGY_TEE_NODE && node->input_type)
1628     {
1629         *mediatype = node->input_type;
1630         IMFMediaType_AddRef(*mediatype);
1631     }
1632     else
1633         hr = E_INVALIDARG;
1634
1635     LeaveCriticalSection(&node->cs);
1636
1637     return hr;
1638 }
1639
1640 static HRESULT WINAPI topology_node_CloneFrom(IMFTopologyNode *iface, IMFTopologyNode *src_node)
1641 {
1642     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1643     MF_TOPOLOGY_TYPE node_type;
1644     IMFMediaType *mediatype;
1645     IUnknown *object;
1646     DWORD count, i;
1647     TOPOID topoid;
1648     HRESULT hr;
1649
1650     TRACE("%p, %p.\n", iface, src_node);
1651
1652     if (FAILED(hr = IMFTopologyNode_GetNodeType(src_node, &node_type)))
1653         return hr;
1654
1655     if (node->node_type != node_type)
1656         return MF_E_INVALIDREQUEST;
1657
1658     if (FAILED(hr = IMFTopologyNode_GetTopoNodeID(src_node, &topoid)))
1659         return hr;
1660
1661     object = NULL;
1662     IMFTopologyNode_GetObject(src_node, &object);
1663
1664     EnterCriticalSection(&node->cs);
1665
1666     hr = IMFTopologyNode_CopyAllItems(src_node, node->attributes);
1667
1668     if (SUCCEEDED(hr))
1669         hr = topology_node_set_object(node, object);
1670
1671     if (SUCCEEDED(hr))
1672         node->id = topoid;
1673
1674     if (SUCCEEDED(IMFTopologyNode_GetInputCount(src_node, &count)))
1675     {
1676         for (i = 0; i < count; ++i)
1677         {
1678             if (SUCCEEDED(IMFTopologyNode_GetInputPrefType(src_node, i, &mediatype)))
1679             {
1680                 IMFTopologyNode_SetInputPrefType(iface, i, mediatype);
1681                 IMFMediaType_Release(mediatype);
1682             }
1683         }
1684     }
1685
1686     if (SUCCEEDED(IMFTopologyNode_GetOutputCount(src_node, &count)))
1687     {
1688         for (i = 0; i < count; ++i)
1689         {
1690             if (SUCCEEDED(IMFTopologyNode_GetOutputPrefType(src_node, i, &mediatype)))
1691             {
1692                 IMFTopologyNode_SetOutputPrefType(iface, i, mediatype);
1693                 IMFMediaType_Release(mediatype);
1694             }
1695         }
1696     }
1697
1698     LeaveCriticalSection(&node->cs);
1699
1700     if (object)
1701         IUnknown_Release(object);
1702
1703     return hr;
1704 }
1705
1706 static const IMFTopologyNodeVtbl topologynodevtbl =
1707 {
1708     topology_node_QueryInterface,
1709     topology_node_AddRef,
1710     topology_node_Release,
1711     topology_node_GetItem,
1712     topology_node_GetItemType,
1713     topology_node_CompareItem,
1714     topology_node_Compare,
1715     topology_node_GetUINT32,
1716     topology_node_GetUINT64,
1717     topology_node_GetDouble,
1718     topology_node_GetGUID,
1719     topology_node_GetStringLength,
1720     topology_node_GetString,
1721     topology_node_GetAllocatedString,
1722     topology_node_GetBlobSize,
1723     topology_node_GetBlob,
1724     topology_node_GetAllocatedBlob,
1725     topology_node_GetUnknown,
1726     topology_node_SetItem,
1727     topology_node_DeleteItem,
1728     topology_node_DeleteAllItems,
1729     topology_node_SetUINT32,
1730     topology_node_SetUINT64,
1731     topology_node_SetDouble,
1732     topology_node_SetGUID,
1733     topology_node_SetString,
1734     topology_node_SetBlob,
1735     topology_node_SetUnknown,
1736     topology_node_LockStore,
1737     topology_node_UnlockStore,
1738     topology_node_GetCount,
1739     topology_node_GetItemByIndex,
1740     topology_node_CopyAllItems,
1741     topology_node_SetObject,
1742     topology_node_GetObject,
1743     topology_node_GetNodeType,
1744     topology_node_GetTopoNodeID,
1745     topology_node_SetTopoNodeID,
1746     topology_node_GetInputCount,
1747     topology_node_GetOutputCount,
1748     topology_node_ConnectOutput,
1749     topology_node_DisconnectOutput,
1750     topology_node_GetInput,
1751     topology_node_GetOutput,
1752     topology_node_SetOutputPrefType,
1753     topology_node_GetOutputPrefType,
1754     topology_node_SetInputPrefType,
1755     topology_node_GetInputPrefType,
1756     topology_node_CloneFrom,
1757 };
1758
1759 static HRESULT create_topology_node(MF_TOPOLOGY_TYPE node_type, struct topology_node **node)
1760 {
1761     HRESULT hr;
1762
1763     if (!(*node = calloc(1, sizeof(**node))))
1764         return E_OUTOFMEMORY;
1765
1766     (*node)->IMFTopologyNode_iface.lpVtbl = &topologynodevtbl;
1767     (*node)->refcount = 1;
1768     (*node)->node_type = node_type;
1769     hr = MFCreateAttributes(&(*node)->attributes, 0);
1770     if (FAILED(hr))
1771     {
1772         free(*node);
1773         return hr;
1774     }
1775     (*node)->id = ((TOPOID)GetCurrentProcessId() << 32) | InterlockedIncrement(&next_node_id);
1776     InitializeCriticalSection(&(*node)->cs);
1777
1778     return S_OK;
1779 }
1780
1781 HRESULT topology_node_get_object(IMFTopologyNode *node, REFIID riid, void **obj)
1782 {
1783     IUnknown *unk;
1784     HRESULT hr;
1785
1786     *obj = NULL;
1787
1788     if (SUCCEEDED(hr = IMFTopologyNode_GetObject(node, &unk)))
1789     {
1790         hr = IUnknown_QueryInterface(unk, riid, obj);
1791         IUnknown_Release(unk);
1792     }
1793
1794     return hr;
1795 }
1796
1797 /***********************************************************************
1798  *      MFCreateTopologyNode (mf.@)
1799  */
1800 HRESULT WINAPI MFCreateTopologyNode(MF_TOPOLOGY_TYPE node_type, IMFTopologyNode **node)
1801 {
1802     struct topology_node *object;
1803     HRESULT hr;
1804
1805     TRACE("%d, %p.\n", node_type, node);
1806
1807     if (!node)
1808         return E_POINTER;
1809
1810     hr = create_topology_node(node_type, &object);
1811     if (SUCCEEDED(hr))
1812         *node = &object->IMFTopologyNode_iface;
1813
1814     return hr;
1815 }
1816
1817 /* private helper for node types without an actual IMFMediaTypeHandler */
1818 struct type_handler
1819 {
1820     IMFMediaTypeHandler IMFMediaTypeHandler_iface;
1821     LONG refcount;
1822
1823     IMFTopologyNode *node;
1824     DWORD stream;
1825     BOOL output;
1826
1827     IMFTransform *transform;
1828 };
1829
1830 static struct type_handler *impl_from_IMFMediaTypeHandler(IMFMediaTypeHandler *iface)
1831 {
1832     return CONTAINING_RECORD(iface, struct type_handler, IMFMediaTypeHandler_iface);
1833 }
1834
1835 static HRESULT WINAPI type_handler_QueryInterface(IMFMediaTypeHandler *iface, REFIID riid, void **obj)
1836 {
1837     if (IsEqualIID(riid, &IID_IMFMediaTypeHandler)
1838             || IsEqualIID(riid, &IID_IUnknown))
1839     {
1840         IMFMediaTypeHandler_AddRef((*obj = iface));
1841         return S_OK;
1842     }
1843
1844     *obj = NULL;
1845     return E_NOINTERFACE;
1846 }
1847
1848 static ULONG WINAPI type_handler_AddRef(IMFMediaTypeHandler *iface)
1849 {
1850     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1851     ULONG refcount = InterlockedIncrement(&handler->refcount);
1852     return refcount;
1853 }
1854
1855 static ULONG WINAPI type_handler_Release(IMFMediaTypeHandler *iface)
1856 {
1857     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1858     ULONG refcount = InterlockedDecrement(&handler->refcount);
1859
1860     if (!refcount)
1861     {
1862         if (handler->transform)
1863             IMFTransform_Release(handler->transform);
1864         IMFTopologyNode_Release(handler->node);
1865         free(handler);
1866     }
1867
1868     return refcount;
1869 }
1870
1871 static HRESULT WINAPI type_handler_IsMediaTypeSupported(IMFMediaTypeHandler *iface, IMFMediaType *in_type,
1872         IMFMediaType **out_type)
1873 {
1874     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1875     IMFMediaType *type;
1876     DWORD flags;
1877     HRESULT hr;
1878
1879     if (out_type)
1880         *out_type = NULL;
1881
1882     if (handler->transform)
1883     {
1884         if (handler->output)
1885             return IMFTransform_SetOutputType(handler->transform, handler->stream, in_type, MFT_SET_TYPE_TEST_ONLY);
1886         else
1887             return IMFTransform_SetInputType(handler->transform, handler->stream, in_type, MFT_SET_TYPE_TEST_ONLY);
1888     }
1889
1890     if (FAILED(hr = IMFMediaTypeHandler_GetCurrentMediaType(iface, &type)))
1891         return hr;
1892
1893     hr = IMFMediaType_IsEqual(type, in_type, &flags);
1894     IMFMediaType_Release(type);
1895     return hr;
1896 }
1897
1898 static HRESULT WINAPI type_handler_GetMediaTypeCount(IMFMediaTypeHandler *iface, DWORD *count)
1899 {
1900     return E_NOTIMPL;
1901 }
1902
1903 static HRESULT WINAPI type_handler_GetMediaTypeByIndex(IMFMediaTypeHandler *iface, DWORD index,
1904         IMFMediaType **type)
1905 {
1906     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1907
1908     if (handler->transform)
1909     {
1910         if (handler->output)
1911             return IMFTransform_GetOutputAvailableType(handler->transform, handler->stream, index, type);
1912         else
1913             return IMFTransform_GetInputAvailableType(handler->transform, handler->stream, index, type);
1914     }
1915
1916     if (index)
1917         return MF_E_NO_MORE_TYPES;
1918
1919     return IMFMediaTypeHandler_GetCurrentMediaType(iface, type);
1920 }
1921
1922 static HRESULT WINAPI type_handler_SetCurrentMediaType(IMFMediaTypeHandler *iface, IMFMediaType *type)
1923 {
1924     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1925
1926     if (handler->transform)
1927     {
1928         if (handler->output)
1929             return IMFTransform_SetOutputType(handler->transform, handler->stream, type, 0);
1930         else
1931             return IMFTransform_SetInputType(handler->transform, handler->stream, type, 0);
1932     }
1933
1934     return IMFTopologyNode_SetInputPrefType(handler->node, handler->stream, type);
1935 }
1936
1937 static HRESULT WINAPI type_handler_GetCurrentMediaType(IMFMediaTypeHandler *iface, IMFMediaType **type)
1938 {
1939     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1940     UINT32 output;
1941
1942     if (handler->transform)
1943     {
1944         if (handler->output)
1945             return IMFTransform_GetOutputCurrentType(handler->transform, handler->stream, type);
1946         else
1947             return IMFTransform_GetInputCurrentType(handler->transform, handler->stream, type);
1948     }
1949
1950     if (SUCCEEDED(IMFTopologyNode_GetInputPrefType(handler->node, 0, type)))
1951         return S_OK;
1952
1953     if (FAILED(IMFTopologyNode_GetUINT32(handler->node, &MF_TOPONODE_PRIMARYOUTPUT, &output)))
1954         output = 0;
1955
1956     return IMFTopologyNode_GetOutputPrefType(handler->node, output, type);
1957 }
1958
1959 static HRESULT WINAPI type_handler_GetMajorType(IMFMediaTypeHandler *iface, GUID *type)
1960 {
1961     IMFMediaType *media_type;
1962     HRESULT hr;
1963
1964     if (FAILED(hr = IMFMediaTypeHandler_GetCurrentMediaType(iface, &media_type)))
1965         return hr;
1966
1967     hr = IMFMediaType_GetMajorType(media_type, type);
1968     IMFMediaType_Release(media_type);
1969     return hr;
1970 }
1971
1972 static const IMFMediaTypeHandlerVtbl type_handler_vtbl =
1973 {
1974     type_handler_QueryInterface,
1975     type_handler_AddRef,
1976     type_handler_Release,
1977     type_handler_IsMediaTypeSupported,
1978     type_handler_GetMediaTypeCount,
1979     type_handler_GetMediaTypeByIndex,
1980     type_handler_SetCurrentMediaType,
1981     type_handler_GetCurrentMediaType,
1982     type_handler_GetMajorType,
1983 };
1984
1985 static HRESULT type_handler_create(IMFTopologyNode *node, DWORD stream, BOOL output, IMFTransform *transform, IMFMediaTypeHandler **out)
1986 {
1987     struct type_handler *handler;
1988
1989     if (!(handler = calloc(1, sizeof(*handler)))) return E_OUTOFMEMORY;
1990     handler->IMFMediaTypeHandler_iface.lpVtbl = &type_handler_vtbl;
1991     handler->refcount = 1;
1992     handler->stream = stream;
1993     handler->output = output;
1994     IMFTopologyNode_AddRef((handler->node = node));
1995     if (transform)
1996         IMFTransform_AddRef((handler->transform = transform));
1997
1998     *out = &handler->IMFMediaTypeHandler_iface;
1999     return S_OK;
2000 }
2001
2002 HRESULT topology_node_get_type_handler(IMFTopologyNode *node, DWORD stream,
2003         BOOL output, IMFMediaTypeHandler **handler)
2004 {
2005     MF_TOPOLOGY_TYPE node_type;
2006     IMFStreamSink *stream_sink;
2007     IMFStreamDescriptor *sd;
2008     IMFTransform *transform;
2009     HRESULT hr;
2010
2011     if (FAILED(hr = IMFTopologyNode_GetNodeType(node, &node_type)))
2012         return hr;
2013
2014     switch (node_type)
2015     {
2016         case MF_TOPOLOGY_OUTPUT_NODE:
2017             if (output || stream)
2018                 return MF_E_INVALIDSTREAMNUMBER;
2019
2020             if (SUCCEEDED(hr = topology_node_get_object(node, &IID_IMFStreamSink, (void **)&stream_sink)))
2021             {
2022                 hr = IMFStreamSink_GetMediaTypeHandler(stream_sink, handler);
2023                 IMFStreamSink_Release(stream_sink);
2024             }
2025             break;
2026         case MF_TOPOLOGY_SOURCESTREAM_NODE:
2027             if (!output || stream)
2028                 return MF_E_INVALIDSTREAMNUMBER;
2029
2030             if (SUCCEEDED(hr = IMFTopologyNode_GetUnknown(node, &MF_TOPONODE_STREAM_DESCRIPTOR,
2031                     &IID_IMFStreamDescriptor, (void **)&sd)))
2032             {
2033                 hr = IMFStreamDescriptor_GetMediaTypeHandler(sd, handler);
2034                 IMFStreamDescriptor_Release(sd);
2035             }
2036             break;
2037         case MF_TOPOLOGY_TRANSFORM_NODE:
2038             if (SUCCEEDED(hr = topology_node_get_object(node, &IID_IMFTransform, (void **)&transform)))
2039             {
2040                 hr = type_handler_create(node, stream, output, transform, handler);
2041                 IMFTransform_Release(transform);
2042             }
2043             break;
2044         case MF_TOPOLOGY_TEE_NODE:
2045             hr = type_handler_create(node, stream, output, NULL, handler);
2046             break;
2047         default:
2048             WARN("Unexpected node type %u.\n", node_type);
2049             return MF_E_UNEXPECTED;
2050     }
2051
2052     return hr;
2053 }
2054
2055 /***********************************************************************
2056  *      MFGetTopoNodeCurrentType (mf.@)
2057  */
2058 HRESULT WINAPI MFGetTopoNodeCurrentType(IMFTopologyNode *node, DWORD stream, BOOL output, IMFMediaType **type)
2059 {
2060     IMFMediaTypeHandler *handler;
2061     HRESULT hr;
2062
2063     TRACE("%p, %lu, %d, %p.\n", node, stream, output, type);
2064
2065     if (FAILED(hr = topology_node_get_type_handler(node, stream, output, &handler)))
2066         return hr;
2067
2068     hr = IMFMediaTypeHandler_GetCurrentMediaType(handler, type);
2069     IMFMediaTypeHandler_Release(handler);
2070     return hr;
2071 }
2072
2073 static HRESULT WINAPI seq_source_QueryInterface(IMFSequencerSource *iface, REFIID riid, void **out)
2074 {
2075     struct seq_source *seq_source = impl_from_IMFSequencerSource(iface);
2076
2077     TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), out);
2078
2079     *out = NULL;
2080
2081     if (IsEqualIID(riid, &IID_IMFSequencerSource) ||
2082             IsEqualIID(riid, &IID_IUnknown))
2083     {
2084         *out = &seq_source->IMFSequencerSource_iface;
2085     }
2086     else if (IsEqualIID(riid, &IID_IMFMediaSourceTopologyProvider))
2087     {
2088         *out = &seq_source->IMFMediaSourceTopologyProvider_iface;
2089     }
2090     else
2091     {
2092         WARN("Unimplemented %s.\n", debugstr_guid(riid));
2093         return E_NOINTERFACE;
2094     }
2095
2096     if (*out)
2097         IUnknown_AddRef((IUnknown *)*out);
2098
2099     return S_OK;
2100 }
2101
2102 static ULONG WINAPI seq_source_AddRef(IMFSequencerSource *iface)
2103 {
2104     struct seq_source *seq_source = impl_from_IMFSequencerSource(iface);
2105     ULONG refcount = InterlockedIncrement(&seq_source->refcount);
2106
2107     TRACE("%p, refcount %lu.\n", iface, refcount);
2108
2109     return refcount;
2110 }
2111
2112 static ULONG WINAPI seq_source_Release(IMFSequencerSource *iface)
2113 {
2114     struct seq_source *seq_source = impl_from_IMFSequencerSource(iface);
2115     ULONG refcount = InterlockedDecrement(&seq_source->refcount);
2116
2117     TRACE("%p, refcount %lu.\n", iface, refcount);
2118
2119     if (!refcount)
2120         free(seq_source);
2121
2122     return refcount;
2123 }
2124
2125 static HRESULT WINAPI seq_source_AppendTopology(IMFSequencerSource *iface, IMFTopology *topology,
2126         DWORD flags, MFSequencerElementId *id)
2127 {
2128     FIXME("%p, %p, %lx, %p.\n", iface, topology, flags, id);
2129
2130     return E_NOTIMPL;
2131 }
2132
2133 static HRESULT WINAPI seq_source_DeleteTopology(IMFSequencerSource *iface, MFSequencerElementId id)
2134 {
2135     FIXME("%p, %#lx.\n", iface, id);
2136
2137     return E_NOTIMPL;
2138 }
2139
2140 static HRESULT WINAPI seq_source_GetPresentationContext(IMFSequencerSource *iface,
2141         IMFPresentationDescriptor *descriptor, MFSequencerElementId *id, IMFTopology **topology)
2142 {
2143     FIXME("%p, %p, %p, %p.\n", iface, descriptor, id, topology);
2144
2145     return E_NOTIMPL;
2146 }
2147
2148 static HRESULT WINAPI seq_source_UpdateTopology(IMFSequencerSource *iface, MFSequencerElementId id,
2149         IMFTopology *topology)
2150 {
2151     FIXME("%p, %#lx, %p.\n", iface, id, topology);
2152
2153     return E_NOTIMPL;
2154 }
2155
2156 static HRESULT WINAPI seq_source_UpdateTopologyFlags(IMFSequencerSource *iface, MFSequencerElementId id, DWORD flags)
2157 {
2158     FIXME("%p, %#lx, %#lx.\n", iface, id, flags);
2159
2160     return E_NOTIMPL;
2161 }
2162
2163 static HRESULT WINAPI seq_source_topology_provider_QueryInterface(IMFMediaSourceTopologyProvider *iface, REFIID riid,
2164         void **obj)
2165 {
2166     struct seq_source *seq_source = impl_from_IMFMediaSourceTopologyProvider(iface);
2167     return IMFSequencerSource_QueryInterface(&seq_source->IMFSequencerSource_iface, riid, obj);
2168 }
2169
2170 static ULONG WINAPI seq_source_topology_provider_AddRef(IMFMediaSourceTopologyProvider *iface)
2171 {
2172     struct seq_source *seq_source = impl_from_IMFMediaSourceTopologyProvider(iface);
2173     return IMFSequencerSource_AddRef(&seq_source->IMFSequencerSource_iface);
2174 }
2175
2176 static ULONG WINAPI seq_source_topology_provider_Release(IMFMediaSourceTopologyProvider *iface)
2177 {
2178     struct seq_source *seq_source = impl_from_IMFMediaSourceTopologyProvider(iface);
2179     return IMFSequencerSource_Release(&seq_source->IMFSequencerSource_iface);
2180 }
2181
2182 static HRESULT WINAPI seq_source_topology_provider_GetMediaSourceTopology(IMFMediaSourceTopologyProvider *iface,
2183         IMFPresentationDescriptor *pd, IMFTopology **topology)
2184 {
2185     FIXME("%p, %p, %p.\n", iface, pd, topology);
2186
2187     return E_NOTIMPL;
2188 }
2189
2190 static const IMFMediaSourceTopologyProviderVtbl seq_source_topology_provider_vtbl =
2191 {
2192     seq_source_topology_provider_QueryInterface,
2193     seq_source_topology_provider_AddRef,
2194     seq_source_topology_provider_Release,
2195     seq_source_topology_provider_GetMediaSourceTopology,
2196 };
2197
2198 static const IMFSequencerSourceVtbl seqsourcevtbl =
2199 {
2200     seq_source_QueryInterface,
2201     seq_source_AddRef,
2202     seq_source_Release,
2203     seq_source_AppendTopology,
2204     seq_source_DeleteTopology,
2205     seq_source_GetPresentationContext,
2206     seq_source_UpdateTopology,
2207     seq_source_UpdateTopologyFlags,
2208 };
2209
2210 /***********************************************************************
2211  *      MFCreateSequencerSource (mf.@)
2212  */
2213 HRESULT WINAPI MFCreateSequencerSource(IUnknown *reserved, IMFSequencerSource **seq_source)
2214 {
2215     struct seq_source *object;
2216
2217     TRACE("%p, %p.\n", reserved, seq_source);
2218
2219     if (!seq_source)
2220         return E_POINTER;
2221
2222     if (!(object = calloc(1, sizeof(*object))))
2223         return E_OUTOFMEMORY;
2224
2225     object->IMFSequencerSource_iface.lpVtbl = &seqsourcevtbl;
2226     object->IMFMediaSourceTopologyProvider_iface.lpVtbl = &seq_source_topology_provider_vtbl;
2227     object->refcount = 1;
2228
2229     *seq_source = &object->IMFSequencerSource_iface;
2230
2231     return S_OK;
2232 }