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 = outputs->streams[j].connection->id;
 716
 717             /* Skip node lookup in destination topology, assuming same node order. */
 718             if (SUCCEEDED(hr = topology_get_node_by_id(topology, id, &node)))
 719                 topology_node_connect_output(topology->nodes.nodes[i], j, node, input_index);
 720         }
 721     }
 722
 723     /* Copy attributes and id. */
 724     hr = IMFTopology_CopyAllItems(src, (IMFAttributes *)&topology->IMFTopology_iface);
 725     if (SUCCEEDED(hr))
 726         topology->id = src_topology->id;
 727
 728     return S_OK;
 729 }
 730
 731 static HRESULT WINAPI topology_GetNodeByID(IMFTopology *iface, TOPOID id, IMFTopologyNode **ret)
 732 {
 733     struct topology *topology = impl_from_IMFTopology(iface);
 734     struct topology_node *node;
 735     HRESULT hr;
 736
 737     TRACE("%p, %p.\n", iface, ret);
 738
 739     if (SUCCEEDED(hr = topology_get_node_by_id(topology, id, &node)))
 740     {
 741         *ret = &node->IMFTopologyNode_iface;
 742         IMFTopologyNode_AddRef(*ret);
 743     }
 744     else
 745         *ret = NULL;
 746
 747     return hr;
 748 }
 749
 750 static HRESULT topology_get_node_collection(const struct topology *topology, MF_TOPOLOGY_TYPE node_type,
 751         IMFCollection **collection)
 752 {
 753     HRESULT hr;
 754     size_t i;
 755
 756     if (!collection)
 757         return E_POINTER;
 758
 759     if (FAILED(hr = MFCreateCollection(collection)))
 760         return hr;
 761
 762     for (i = 0; i < topology->nodes.count; ++i)
 763     {
 764         if (topology->nodes.nodes[i]->node_type == node_type)
 765         {
 766             if (FAILED(hr = IMFCollection_AddElement(*collection,
 767                     (IUnknown *)&topology->nodes.nodes[i]->IMFTopologyNode_iface)))
 768             {
 769                 IMFCollection_Release(*collection);
 770                 *collection = NULL;
 771                 break;
 772             }
 773         }
 774     }
 775
 776     return hr;
 777 }
 778
 779 static HRESULT WINAPI topology_GetSourceNodeCollection(IMFTopology *iface, IMFCollection **collection)
 780 {
 781     struct topology *topology = impl_from_IMFTopology(iface);
 782
 783     TRACE("%p, %p.\n", iface, collection);
 784
 785     return topology_get_node_collection(topology, MF_TOPOLOGY_SOURCESTREAM_NODE, collection);
 786 }
 787
 788 static HRESULT WINAPI topology_GetOutputNodeCollection(IMFTopology *iface, IMFCollection **collection)
 789 {
 790     struct topology *topology = impl_from_IMFTopology(iface);
 791
 792     TRACE("%p, %p.\n", iface, collection);
 793
 794     return topology_get_node_collection(topology, MF_TOPOLOGY_OUTPUT_NODE, collection);
 795 }
 796
 797 static const IMFTopologyVtbl topologyvtbl =
 798 {
 799     topology_QueryInterface,
 800     topology_AddRef,
 801     topology_Release,
 802     topology_GetItem,
 803     topology_GetItemType,
 804     topology_CompareItem,
 805     topology_Compare,
 806     topology_GetUINT32,
 807     topology_GetUINT64,
 808     topology_GetDouble,
 809     topology_GetGUID,
 810     topology_GetStringLength,
 811     topology_GetString,
 812     topology_GetAllocatedString,
 813     topology_GetBlobSize,
 814     topology_GetBlob,
 815     topology_GetAllocatedBlob,
 816     topology_GetUnknown,
 817     topology_SetItem,
 818     topology_DeleteItem,
 819     topology_DeleteAllItems,
 820     topology_SetUINT32,
 821     topology_SetUINT64,
 822     topology_SetDouble,
 823     topology_SetGUID,
 824     topology_SetString,
 825     topology_SetBlob,
 826     topology_SetUnknown,
 827     topology_LockStore,
 828     topology_UnlockStore,
 829     topology_GetCount,
 830     topology_GetItemByIndex,
 831     topology_CopyAllItems,
 832     topology_GetTopologyID,
 833     topology_AddNode,
 834     topology_RemoveNode,
 835     topology_GetNodeCount,
 836     topology_GetNode,
 837     topology_Clear,
 838     topology_CloneFrom,
 839     topology_GetNodeByID,
 840     topology_GetSourceNodeCollection,
 841     topology_GetOutputNodeCollection,
 842 };
 843
 844 static struct topology *unsafe_impl_from_IMFTopology(IMFTopology *iface)
 845 {
 846     if (!iface || iface->lpVtbl != &topologyvtbl)
 847         return NULL;
 848     return impl_from_IMFTopology(iface);
 849 }
 850
 851 static TOPOID topology_generate_id(void)
 852 {
 853     TOPOID old;
 854
 855     do
 856     {
 857         old = next_topology_id;
 858     }
 859     while (InterlockedCompareExchange64((LONG64 *)&next_topology_id, old + 1, old) != old);
 860
 861     return next_topology_id;
 862 }
 863
 864 /***********************************************************************
 865  *      MFCreateTopology (mf.@)
 866  */
 867 HRESULT WINAPI MFCreateTopology(IMFTopology **topology)
 868 {
 869     struct topology *object;
 870     HRESULT hr;
 871
 872     TRACE("%p.\n", topology);
 873
 874     if (!topology)
 875         return E_POINTER;
 876
 877     if (!(object = calloc(1, sizeof(*object))))
 878         return E_OUTOFMEMORY;
 879
 880     object->IMFTopology_iface.lpVtbl = &topologyvtbl;
 881     object->refcount = 1;
 882
 883     hr = MFCreateAttributes(&object->attributes, 0);
 884     if (FAILED(hr))
 885     {
 886         IMFTopology_Release(&object->IMFTopology_iface);
 887         return hr;
 888     }
 889
 890     object->id = topology_generate_id();
 891
 892     *topology = &object->IMFTopology_iface;
 893
 894     return S_OK;
 895 }
 896
 897 static HRESULT WINAPI topology_node_QueryInterface(IMFTopologyNode *iface, REFIID riid, void **out)
 898 {
 899     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 900
 901     TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), out);
 902
 903     if (IsEqualIID(riid, &IID_IMFTopologyNode) ||
 904             IsEqualIID(riid, &IID_IMFAttributes) ||
 905             IsEqualIID(riid, &IID_IUnknown))
 906     {
 907         *out = &node->IMFTopologyNode_iface;
 908         IMFTopologyNode_AddRef(iface);
 909         return S_OK;
 910     }
 911
 912     WARN("Unsupported interface %s.\n", debugstr_guid(riid));
 913     *out = NULL;
 914
 915     return E_NOINTERFACE;
 916 }
 917
 918 static ULONG WINAPI topology_node_AddRef(IMFTopologyNode *iface)
 919 {
 920     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 921     ULONG refcount = InterlockedIncrement(&node->refcount);
 922
 923     TRACE("%p, refcount %lu.\n", iface, refcount);
 924
 925     return refcount;
 926 }
 927
 928 static ULONG WINAPI topology_node_Release(IMFTopologyNode *iface)
 929 {
 930     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 931     ULONG refcount = InterlockedDecrement(&node->refcount);
 932     unsigned int i;
 933
 934     TRACE("%p, refcount %lu.\n", iface, refcount);
 935
 936     if (!refcount)
 937     {
 938         if (node->object)
 939             IUnknown_Release(node->object);
 940         if (node->input_type)
 941             IMFMediaType_Release(node->input_type);
 942         for (i = 0; i < node->inputs.count; ++i)
 943         {
 944             if (node->inputs.streams[i].preferred_type)
 945                 IMFMediaType_Release(node->inputs.streams[i].preferred_type);
 946         }
 947         for (i = 0; i < node->outputs.count; ++i)
 948         {
 949             if (node->outputs.streams[i].preferred_type)
 950                 IMFMediaType_Release(node->outputs.streams[i].preferred_type);
 951         }
 952         free(node->inputs.streams);
 953         free(node->outputs.streams);
 954         IMFAttributes_Release(node->attributes);
 955         DeleteCriticalSection(&node->cs);
 956         free(node);
 957     }
 958
 959     return refcount;
 960 }
 961
 962 static HRESULT WINAPI topology_node_GetItem(IMFTopologyNode *iface, REFGUID key, PROPVARIANT *value)
 963 {
 964     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 965
 966     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
 967
 968     return IMFAttributes_GetItem(node->attributes, key, value);
 969 }
 970
 971 static HRESULT WINAPI topology_node_GetItemType(IMFTopologyNode *iface, REFGUID key, MF_ATTRIBUTE_TYPE *type)
 972 {
 973     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 974
 975     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), type);
 976
 977     return IMFAttributes_GetItemType(node->attributes, key, type);
 978 }
 979
 980 static HRESULT WINAPI topology_node_CompareItem(IMFTopologyNode *iface, REFGUID key, REFPROPVARIANT value, BOOL *result)
 981 {
 982     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 983
 984     TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), value, result);
 985
 986     return IMFAttributes_CompareItem(node->attributes, key, value, result);
 987 }
 988
 989 static HRESULT WINAPI topology_node_Compare(IMFTopologyNode *iface, IMFAttributes *theirs,
 990         MF_ATTRIBUTES_MATCH_TYPE type, BOOL *result)
 991 {
 992     struct topology_node *node = impl_from_IMFTopologyNode(iface);
 993
 994     TRACE("%p, %p, %d, %p.\n", iface, theirs, type, result);
 995
 996     return IMFAttributes_Compare(node->attributes, theirs, type, result);
 997 }
 998
 999 static HRESULT WINAPI topology_node_GetUINT32(IMFTopologyNode *iface, REFGUID key, UINT32 *value)
1000 {
1001     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1002
1003     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
1004
1005     return IMFAttributes_GetUINT32(node->attributes, key, value);
1006 }
1007
1008 static HRESULT WINAPI topology_node_GetUINT64(IMFTopologyNode *iface, REFGUID key, UINT64 *value)
1009 {
1010     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1011
1012     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
1013
1014     return IMFAttributes_GetUINT64(node->attributes, key, value);
1015 }
1016
1017 static HRESULT WINAPI topology_node_GetDouble(IMFTopologyNode *iface, REFGUID key, double *value)
1018 {
1019     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1020
1021     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
1022
1023     return IMFAttributes_GetDouble(node->attributes, key, value);
1024 }
1025
1026 static HRESULT WINAPI topology_node_GetGUID(IMFTopologyNode *iface, REFGUID key, GUID *value)
1027 {
1028     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1029
1030     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
1031
1032     return IMFAttributes_GetGUID(node->attributes, key, value);
1033 }
1034
1035 static HRESULT WINAPI topology_node_GetStringLength(IMFTopologyNode *iface, REFGUID key, UINT32 *length)
1036 {
1037     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1038
1039     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), length);
1040
1041     return IMFAttributes_GetStringLength(node->attributes, key, length);
1042 }
1043
1044 static HRESULT WINAPI topology_node_GetString(IMFTopologyNode *iface, REFGUID key, WCHAR *value,
1045         UINT32 size, UINT32 *length)
1046 {
1047     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1048
1049     TRACE("%p, %s, %p, %d, %p.\n", iface, debugstr_guid(key), value, size, length);
1050
1051     return IMFAttributes_GetString(node->attributes, key, value, size, length);
1052 }
1053
1054 static HRESULT WINAPI topology_node_GetAllocatedString(IMFTopologyNode *iface, REFGUID key,
1055         WCHAR **value, UINT32 *length)
1056 {
1057     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1058
1059     TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), value, length);
1060
1061     return IMFAttributes_GetAllocatedString(node->attributes, key, value, length);
1062 }
1063
1064 static HRESULT WINAPI topology_node_GetBlobSize(IMFTopologyNode *iface, REFGUID key, UINT32 *size)
1065 {
1066     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1067
1068     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), size);
1069
1070     return IMFAttributes_GetBlobSize(node->attributes, key, size);
1071 }
1072
1073 static HRESULT WINAPI topology_node_GetBlob(IMFTopologyNode *iface, REFGUID key, UINT8 *buf,
1074         UINT32 bufsize, UINT32 *blobsize)
1075 {
1076     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1077
1078     TRACE("%p, %s, %p, %d, %p.\n", iface, debugstr_guid(key), buf, bufsize, blobsize);
1079
1080     return IMFAttributes_GetBlob(node->attributes, key, buf, bufsize, blobsize);
1081 }
1082
1083 static HRESULT WINAPI topology_node_GetAllocatedBlob(IMFTopologyNode *iface, REFGUID key, UINT8 **buf, UINT32 *size)
1084 {
1085     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1086
1087     TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), buf, size);
1088
1089     return IMFAttributes_GetAllocatedBlob(node->attributes, key, buf, size);
1090 }
1091
1092 static HRESULT WINAPI topology_node_GetUnknown(IMFTopologyNode *iface, REFGUID key, REFIID riid, void **ppv)
1093 {
1094     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1095
1096     TRACE("%p, %s, %s, %p.\n", iface, debugstr_guid(key), debugstr_guid(riid), ppv);
1097
1098     return IMFAttributes_GetUnknown(node->attributes, key, riid, ppv);
1099 }
1100
1101 static HRESULT WINAPI topology_node_SetItem(IMFTopologyNode *iface, REFGUID key, REFPROPVARIANT value)
1102 {
1103     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1104
1105     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
1106
1107     return IMFAttributes_SetItem(node->attributes, key, value);
1108 }
1109
1110 static HRESULT WINAPI topology_node_DeleteItem(IMFTopologyNode *iface, REFGUID key)
1111 {
1112     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1113
1114     TRACE("%p, %s.\n", iface, debugstr_guid(key));
1115
1116     return IMFAttributes_DeleteItem(node->attributes, key);
1117 }
1118
1119 static HRESULT WINAPI topology_node_DeleteAllItems(IMFTopologyNode *iface)
1120 {
1121     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1122
1123     TRACE("%p.\n", iface);
1124
1125     return IMFAttributes_DeleteAllItems(node->attributes);
1126 }
1127
1128 static HRESULT WINAPI topology_node_SetUINT32(IMFTopologyNode *iface, REFGUID key, UINT32 value)
1129 {
1130     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1131
1132     TRACE("%p, %s, %d.\n", iface, debugstr_guid(key), value);
1133
1134     return IMFAttributes_SetUINT32(node->attributes, key, value);
1135 }
1136
1137 static HRESULT WINAPI topology_node_SetUINT64(IMFTopologyNode *iface, REFGUID key, UINT64 value)
1138 {
1139     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1140
1141     TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), wine_dbgstr_longlong(value));
1142
1143     return IMFAttributes_SetUINT64(node->attributes, key, value);
1144 }
1145
1146 static HRESULT WINAPI topology_node_SetDouble(IMFTopologyNode *iface, REFGUID key, double value)
1147 {
1148     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1149
1150     TRACE("%p, %s, %f.\n", iface, debugstr_guid(key), value);
1151
1152     return IMFAttributes_SetDouble(node->attributes, key, value);
1153 }
1154
1155 static HRESULT WINAPI topology_node_SetGUID(IMFTopologyNode *iface, REFGUID key, REFGUID value)
1156 {
1157     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1158
1159     TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), debugstr_guid(value));
1160
1161     return IMFAttributes_SetGUID(node->attributes, key, value);
1162 }
1163
1164 static HRESULT WINAPI topology_node_SetString(IMFTopologyNode *iface, REFGUID key, const WCHAR *value)
1165 {
1166     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1167
1168     TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), debugstr_w(value));
1169
1170     return IMFAttributes_SetString(node->attributes, key, value);
1171 }
1172
1173 static HRESULT WINAPI topology_node_SetBlob(IMFTopologyNode *iface, REFGUID key, const UINT8 *buf, UINT32 size)
1174 {
1175     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1176
1177     TRACE("%p, %s, %p, %d.\n", iface, debugstr_guid(key), buf, size);
1178
1179     return IMFAttributes_SetBlob(node->attributes, key, buf, size);
1180 }
1181
1182 static HRESULT WINAPI topology_node_SetUnknown(IMFTopologyNode *iface, REFGUID key, IUnknown *unknown)
1183 {
1184     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1185
1186     TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), unknown);
1187
1188     return IMFAttributes_SetUnknown(node->attributes, key, unknown);
1189 }
1190
1191 static HRESULT WINAPI topology_node_LockStore(IMFTopologyNode *iface)
1192 {
1193     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1194
1195     TRACE("%p.\n", iface);
1196
1197     return IMFAttributes_LockStore(node->attributes);
1198 }
1199
1200 static HRESULT WINAPI topology_node_UnlockStore(IMFTopologyNode *iface)
1201 {
1202     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1203
1204     TRACE("%p.\n", iface);
1205
1206     return IMFAttributes_UnlockStore(node->attributes);
1207 }
1208
1209 static HRESULT WINAPI topology_node_GetCount(IMFTopologyNode *iface, UINT32 *count)
1210 {
1211     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1212
1213     TRACE("%p, %p.\n", iface, count);
1214
1215     return IMFAttributes_GetCount(node->attributes, count);
1216 }
1217
1218 static HRESULT WINAPI topology_node_GetItemByIndex(IMFTopologyNode *iface, UINT32 index, GUID *key, PROPVARIANT *value)
1219 {
1220     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1221
1222     TRACE("%p, %u, %p, %p.\n", iface, index, key, value);
1223
1224     return IMFAttributes_GetItemByIndex(node->attributes, index, key, value);
1225 }
1226
1227 static HRESULT WINAPI topology_node_CopyAllItems(IMFTopologyNode *iface, IMFAttributes *dest)
1228 {
1229     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1230
1231     TRACE("%p, %p.\n", iface, dest);
1232
1233     return IMFAttributes_CopyAllItems(node->attributes, dest);
1234 }
1235
1236 static HRESULT topology_node_set_object(struct topology_node *node, IUnknown *object)
1237 {
1238     static const GUID *iids[3] = { &IID_IPersist, &IID_IPersistStorage, &IID_IPersistPropertyBag };
1239     IPersist *persist = NULL;
1240     BOOL has_object_id;
1241     GUID object_id;
1242     unsigned int i;
1243     HRESULT hr;
1244
1245     has_object_id = IMFAttributes_GetGUID(node->attributes, &MF_TOPONODE_TRANSFORM_OBJECTID, &object_id) == S_OK;
1246
1247     if (object && !has_object_id)
1248     {
1249         for (i = 0; i < ARRAY_SIZE(iids); ++i)
1250         {
1251             persist = NULL;
1252             if (SUCCEEDED(hr = IUnknown_QueryInterface(object, iids[i], (void **)&persist)))
1253                 break;
1254         }
1255
1256         if (persist)
1257         {
1258             if (FAILED(hr = IPersist_GetClassID(persist, &object_id)))
1259             {
1260                 IPersist_Release(persist);
1261                 persist = NULL;
1262             }
1263         }
1264     }
1265
1266     EnterCriticalSection(&node->cs);
1267
1268     if (node->object)
1269         IUnknown_Release(node->object);
1270     node->object = object;
1271     if (node->object)
1272         IUnknown_AddRef(node->object);
1273
1274     if (persist)
1275         IMFAttributes_SetGUID(node->attributes, &MF_TOPONODE_TRANSFORM_OBJECTID, &object_id);
1276
1277     LeaveCriticalSection(&node->cs);
1278
1279     if (persist)
1280         IPersist_Release(persist);
1281
1282     return S_OK;
1283 }
1284
1285 static HRESULT WINAPI topology_node_SetObject(IMFTopologyNode *iface, IUnknown *object)
1286 {
1287     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1288
1289     TRACE("%p, %p.\n", iface, object);
1290
1291     return topology_node_set_object(node, object);
1292 }
1293
1294 static HRESULT WINAPI topology_node_GetObject(IMFTopologyNode *iface, IUnknown **object)
1295 {
1296     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1297
1298     TRACE("%p, %p.\n", iface, object);
1299
1300     if (!object)
1301         return E_POINTER;
1302
1303     EnterCriticalSection(&node->cs);
1304
1305     *object = node->object;
1306     if (*object)
1307         IUnknown_AddRef(*object);
1308
1309     LeaveCriticalSection(&node->cs);
1310
1311     return *object ? S_OK : E_FAIL;
1312 }
1313
1314 static HRESULT WINAPI topology_node_GetNodeType(IMFTopologyNode *iface, MF_TOPOLOGY_TYPE *node_type)
1315 {
1316     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1317
1318     TRACE("%p, %p.\n", iface, node_type);
1319
1320     *node_type = node->node_type;
1321
1322     return S_OK;
1323 }
1324
1325 static HRESULT WINAPI topology_node_GetTopoNodeID(IMFTopologyNode *iface, TOPOID *id)
1326 {
1327     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1328
1329     TRACE("%p, %p.\n", iface, id);
1330
1331     *id = node->id;
1332
1333     return S_OK;
1334 }
1335
1336 static HRESULT WINAPI topology_node_SetTopoNodeID(IMFTopologyNode *iface, TOPOID id)
1337 {
1338     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1339
1340     TRACE("%p, %s.\n", iface, wine_dbgstr_longlong(id));
1341
1342     node->id = id;
1343
1344     return S_OK;
1345 }
1346
1347 static HRESULT WINAPI topology_node_GetInputCount(IMFTopologyNode *iface, DWORD *count)
1348 {
1349     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1350
1351     TRACE("%p, %p.\n", iface, count);
1352
1353     *count = node->inputs.count;
1354
1355     return S_OK;
1356 }
1357
1358 static HRESULT WINAPI topology_node_GetOutputCount(IMFTopologyNode *iface, DWORD *count)
1359 {
1360     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1361
1362     TRACE("%p, %p.\n", iface, count);
1363
1364     *count = node->outputs.count;
1365
1366     return S_OK;
1367 }
1368
1369 static void topology_node_set_stream_type(struct node_stream *stream, IMFMediaType *mediatype)
1370 {
1371     if (stream->preferred_type)
1372         IMFMediaType_Release(stream->preferred_type);
1373     stream->preferred_type = mediatype;
1374     if (stream->preferred_type)
1375         IMFMediaType_AddRef(stream->preferred_type);
1376 }
1377
1378 static HRESULT topology_node_connect_output(struct topology_node *node, DWORD output_index,
1379         struct topology_node *connection, DWORD input_index)
1380 {
1381     struct node_stream *stream;
1382     HRESULT hr;
1383
1384     if (node->node_type == MF_TOPOLOGY_OUTPUT_NODE || connection->node_type == MF_TOPOLOGY_SOURCESTREAM_NODE)
1385          return E_FAIL;
1386
1387     EnterCriticalSection(&node->cs);
1388     EnterCriticalSection(&connection->cs);
1389
1390     topology_node_disconnect_output(node, output_index);
1391     if (input_index < connection->inputs.count)
1392     {
1393         stream = &connection->inputs.streams[input_index];
1394         if (stream->connection)
1395             topology_node_disconnect_output(stream->connection, stream->connection_stream);
1396     }
1397
1398     hr = topology_node_reserve_streams(&node->outputs, output_index);
1399     if (SUCCEEDED(hr))
1400     {
1401         size_t old_count = connection->inputs.count;
1402         hr = topology_node_reserve_streams(&connection->inputs, input_index);
1403         if (SUCCEEDED(hr) && !old_count && connection->input_type)
1404         {
1405             topology_node_set_stream_type(connection->inputs.streams, connection->input_type);
1406             IMFMediaType_Release(connection->input_type);
1407             connection->input_type = NULL;
1408         }
1409     }
1410
1411     if (SUCCEEDED(hr))
1412     {
1413         node->outputs.streams[output_index].connection = connection;
1414         IMFTopologyNode_AddRef(&node->outputs.streams[output_index].connection->IMFTopologyNode_iface);
1415         node->outputs.streams[output_index].connection_stream = input_index;
1416         connection->inputs.streams[input_index].connection = node;
1417         IMFTopologyNode_AddRef(&connection->inputs.streams[input_index].connection->IMFTopologyNode_iface);
1418         connection->inputs.streams[input_index].connection_stream = output_index;
1419     }
1420
1421     LeaveCriticalSection(&connection->cs);
1422     LeaveCriticalSection(&node->cs);
1423
1424     return hr;
1425 }
1426
1427 static HRESULT WINAPI topology_node_ConnectOutput(IMFTopologyNode *iface, DWORD output_index,
1428         IMFTopologyNode *peer, DWORD input_index)
1429 {
1430     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1431     struct topology_node *connection = unsafe_impl_from_IMFTopologyNode(peer);
1432
1433     TRACE("%p, %lu, %p, %lu.\n", iface, output_index, peer, input_index);
1434
1435     if (!connection)
1436     {
1437         WARN("External node implementations are not supported.\n");
1438         return E_UNEXPECTED;
1439     }
1440
1441     return topology_node_connect_output(node, output_index, connection, input_index);
1442 }
1443
1444 static HRESULT WINAPI topology_node_DisconnectOutput(IMFTopologyNode *iface, DWORD output_index)
1445 {
1446     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1447
1448     TRACE("%p, %lu.\n", iface, output_index);
1449
1450     return topology_node_disconnect_output(node, output_index);
1451 }
1452
1453 static HRESULT WINAPI topology_node_GetInput(IMFTopologyNode *iface, DWORD input_index, IMFTopologyNode **ret,
1454         DWORD *output_index)
1455 {
1456     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1457     HRESULT hr = S_OK;
1458
1459     TRACE("%p, %lu, %p, %p.\n", iface, input_index, ret, output_index);
1460
1461     EnterCriticalSection(&node->cs);
1462
1463     if (input_index < node->inputs.count)
1464     {
1465         const struct node_stream *stream = &node->inputs.streams[input_index];
1466
1467         if (stream->connection)
1468         {
1469             *ret = &stream->connection->IMFTopologyNode_iface;
1470             IMFTopologyNode_AddRef(*ret);
1471             *output_index = stream->connection_stream;
1472         }
1473         else
1474             hr = MF_E_NOT_FOUND;
1475     }
1476     else
1477         hr = E_INVALIDARG;
1478
1479     LeaveCriticalSection(&node->cs);
1480
1481     return hr;
1482 }
1483
1484 static HRESULT WINAPI topology_node_GetOutput(IMFTopologyNode *iface, DWORD output_index, IMFTopologyNode **ret,
1485         DWORD *input_index)
1486 {
1487     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1488     HRESULT hr = S_OK;
1489
1490     TRACE("%p, %lu, %p, %p.\n", iface, output_index, ret, input_index);
1491
1492     EnterCriticalSection(&node->cs);
1493
1494     if (output_index < node->outputs.count)
1495     {
1496         const struct node_stream *stream = &node->outputs.streams[output_index];
1497
1498         if (stream->connection)
1499         {
1500             *ret = &stream->connection->IMFTopologyNode_iface;
1501             IMFTopologyNode_AddRef(*ret);
1502             *input_index = stream->connection_stream;
1503         }
1504         else
1505             hr = MF_E_NOT_FOUND;
1506     }
1507     else
1508         hr = E_INVALIDARG;
1509
1510     LeaveCriticalSection(&node->cs);
1511
1512     return hr;
1513 }
1514
1515 static HRESULT WINAPI topology_node_SetOutputPrefType(IMFTopologyNode *iface, DWORD index, IMFMediaType *mediatype)
1516 {
1517     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1518     HRESULT hr = S_OK;
1519
1520     TRACE("%p, %lu, %p.\n", iface, index, mediatype);
1521
1522     EnterCriticalSection(&node->cs);
1523
1524     if (node->node_type != MF_TOPOLOGY_OUTPUT_NODE)
1525     {
1526         if (SUCCEEDED(hr = topology_node_reserve_streams(&node->outputs, index)))
1527             topology_node_set_stream_type(&node->outputs.streams[index], mediatype);
1528     }
1529     else
1530         hr = E_NOTIMPL;
1531
1532     LeaveCriticalSection(&node->cs);
1533
1534     return hr;
1535 }
1536
1537 static HRESULT topology_node_get_pref_type(struct node_streams *streams, unsigned int index, IMFMediaType **mediatype)
1538 {
1539     *mediatype = streams->streams[index].preferred_type;
1540     if (*mediatype)
1541     {
1542         IMFMediaType_AddRef(*mediatype);
1543         return S_OK;
1544     }
1545
1546     return E_FAIL;
1547 }
1548
1549 static HRESULT WINAPI topology_node_GetOutputPrefType(IMFTopologyNode *iface, DWORD index, IMFMediaType **mediatype)
1550 {
1551     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1552     HRESULT hr = S_OK;
1553
1554     TRACE("%p, %lu, %p.\n", iface, index, mediatype);
1555
1556     EnterCriticalSection(&node->cs);
1557
1558     if (index < node->outputs.count)
1559         hr = topology_node_get_pref_type(&node->outputs, index, mediatype);
1560     else
1561         hr = E_INVALIDARG;
1562
1563     LeaveCriticalSection(&node->cs);
1564
1565     return hr;
1566 }
1567
1568 static HRESULT WINAPI topology_node_SetInputPrefType(IMFTopologyNode *iface, DWORD index, IMFMediaType *mediatype)
1569 {
1570     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1571     HRESULT hr = S_OK;
1572
1573     TRACE("%p, %lu, %p.\n", iface, index, mediatype);
1574
1575     EnterCriticalSection(&node->cs);
1576
1577     switch (node->node_type)
1578     {
1579         case MF_TOPOLOGY_TEE_NODE:
1580             if (index)
1581             {
1582                 hr = MF_E_INVALIDTYPE;
1583                 break;
1584             }
1585             if (node->inputs.count)
1586                 topology_node_set_stream_type(&node->inputs.streams[index], mediatype);
1587             else
1588             {
1589                 if (node->input_type)
1590                     IMFMediaType_Release(node->input_type);
1591                 node->input_type = mediatype;
1592                 if (node->input_type)
1593                     IMFMediaType_AddRef(node->input_type);
1594             }
1595             break;
1596         case MF_TOPOLOGY_SOURCESTREAM_NODE:
1597             hr = E_NOTIMPL;
1598             break;
1599         default:
1600             if (SUCCEEDED(hr = topology_node_reserve_streams(&node->inputs, index)))
1601                 topology_node_set_stream_type(&node->inputs.streams[index], mediatype);
1602     }
1603
1604     LeaveCriticalSection(&node->cs);
1605
1606     return hr;
1607 }
1608
1609 static HRESULT WINAPI topology_node_GetInputPrefType(IMFTopologyNode *iface, DWORD index, IMFMediaType **mediatype)
1610 {
1611     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1612     HRESULT hr = S_OK;
1613
1614     TRACE("%p, %lu, %p.\n", iface, index, mediatype);
1615
1616     EnterCriticalSection(&node->cs);
1617
1618     if (index < node->inputs.count)
1619     {
1620         hr = topology_node_get_pref_type(&node->inputs, index, mediatype);
1621     }
1622     else if (node->node_type == MF_TOPOLOGY_TEE_NODE && node->input_type)
1623     {
1624         *mediatype = node->input_type;
1625         IMFMediaType_AddRef(*mediatype);
1626     }
1627     else
1628         hr = E_INVALIDARG;
1629
1630     LeaveCriticalSection(&node->cs);
1631
1632     return hr;
1633 }
1634
1635 static HRESULT WINAPI topology_node_CloneFrom(IMFTopologyNode *iface, IMFTopologyNode *src_node)
1636 {
1637     struct topology_node *node = impl_from_IMFTopologyNode(iface);
1638     MF_TOPOLOGY_TYPE node_type;
1639     IMFMediaType *mediatype;
1640     IUnknown *object;
1641     DWORD count, i;
1642     TOPOID topoid;
1643     HRESULT hr;
1644
1645     TRACE("%p, %p.\n", iface, src_node);
1646
1647     if (FAILED(hr = IMFTopologyNode_GetNodeType(src_node, &node_type)))
1648         return hr;
1649
1650     if (node->node_type != node_type)
1651         return MF_E_INVALIDREQUEST;
1652
1653     if (FAILED(hr = IMFTopologyNode_GetTopoNodeID(src_node, &topoid)))
1654         return hr;
1655
1656     object = NULL;
1657     IMFTopologyNode_GetObject(src_node, &object);
1658
1659     EnterCriticalSection(&node->cs);
1660
1661     hr = IMFTopologyNode_CopyAllItems(src_node, node->attributes);
1662
1663     if (SUCCEEDED(hr))
1664         hr = topology_node_set_object(node, object);
1665
1666     if (SUCCEEDED(hr))
1667         node->id = topoid;
1668
1669     if (SUCCEEDED(IMFTopologyNode_GetInputCount(src_node, &count)))
1670     {
1671         for (i = 0; i < count; ++i)
1672         {
1673             if (SUCCEEDED(IMFTopologyNode_GetInputPrefType(src_node, i, &mediatype)))
1674             {
1675                 IMFTopologyNode_SetInputPrefType(iface, i, mediatype);
1676                 IMFMediaType_Release(mediatype);
1677             }
1678         }
1679     }
1680
1681     if (SUCCEEDED(IMFTopologyNode_GetOutputCount(src_node, &count)))
1682     {
1683         for (i = 0; i < count; ++i)
1684         {
1685             if (SUCCEEDED(IMFTopologyNode_GetOutputPrefType(src_node, i, &mediatype)))
1686             {
1687                 IMFTopologyNode_SetOutputPrefType(iface, i, mediatype);
1688                 IMFMediaType_Release(mediatype);
1689             }
1690         }
1691     }
1692
1693     LeaveCriticalSection(&node->cs);
1694
1695     if (object)
1696         IUnknown_Release(object);
1697
1698     return hr;
1699 }
1700
1701 static const IMFTopologyNodeVtbl topologynodevtbl =
1702 {
1703     topology_node_QueryInterface,
1704     topology_node_AddRef,
1705     topology_node_Release,
1706     topology_node_GetItem,
1707     topology_node_GetItemType,
1708     topology_node_CompareItem,
1709     topology_node_Compare,
1710     topology_node_GetUINT32,
1711     topology_node_GetUINT64,
1712     topology_node_GetDouble,
1713     topology_node_GetGUID,
1714     topology_node_GetStringLength,
1715     topology_node_GetString,
1716     topology_node_GetAllocatedString,
1717     topology_node_GetBlobSize,
1718     topology_node_GetBlob,
1719     topology_node_GetAllocatedBlob,
1720     topology_node_GetUnknown,
1721     topology_node_SetItem,
1722     topology_node_DeleteItem,
1723     topology_node_DeleteAllItems,
1724     topology_node_SetUINT32,
1725     topology_node_SetUINT64,
1726     topology_node_SetDouble,
1727     topology_node_SetGUID,
1728     topology_node_SetString,
1729     topology_node_SetBlob,
1730     topology_node_SetUnknown,
1731     topology_node_LockStore,
1732     topology_node_UnlockStore,
1733     topology_node_GetCount,
1734     topology_node_GetItemByIndex,
1735     topology_node_CopyAllItems,
1736     topology_node_SetObject,
1737     topology_node_GetObject,
1738     topology_node_GetNodeType,
1739     topology_node_GetTopoNodeID,
1740     topology_node_SetTopoNodeID,
1741     topology_node_GetInputCount,
1742     topology_node_GetOutputCount,
1743     topology_node_ConnectOutput,
1744     topology_node_DisconnectOutput,
1745     topology_node_GetInput,
1746     topology_node_GetOutput,
1747     topology_node_SetOutputPrefType,
1748     topology_node_GetOutputPrefType,
1749     topology_node_SetInputPrefType,
1750     topology_node_GetInputPrefType,
1751     topology_node_CloneFrom,
1752 };
1753
1754 static HRESULT create_topology_node(MF_TOPOLOGY_TYPE node_type, struct topology_node **node)
1755 {
1756     HRESULT hr;
1757
1758     if (!(*node = calloc(1, sizeof(**node))))
1759         return E_OUTOFMEMORY;
1760
1761     (*node)->IMFTopologyNode_iface.lpVtbl = &topologynodevtbl;
1762     (*node)->refcount = 1;
1763     (*node)->node_type = node_type;
1764     hr = MFCreateAttributes(&(*node)->attributes, 0);
1765     if (FAILED(hr))
1766     {
1767         free(*node);
1768         return hr;
1769     }
1770     (*node)->id = ((TOPOID)GetCurrentProcessId() << 32) | InterlockedIncrement(&next_node_id);
1771     InitializeCriticalSection(&(*node)->cs);
1772
1773     return S_OK;
1774 }
1775
1776 HRESULT topology_node_get_object(IMFTopologyNode *node, REFIID riid, void **obj)
1777 {
1778     IUnknown *unk;
1779     HRESULT hr;
1780
1781     *obj = NULL;
1782
1783     if (SUCCEEDED(hr = IMFTopologyNode_GetObject(node, &unk)))
1784     {
1785         hr = IUnknown_QueryInterface(unk, riid, obj);
1786         IUnknown_Release(unk);
1787     }
1788
1789     return hr;
1790 }
1791
1792 /***********************************************************************
1793  *      MFCreateTopologyNode (mf.@)
1794  */
1795 HRESULT WINAPI MFCreateTopologyNode(MF_TOPOLOGY_TYPE node_type, IMFTopologyNode **node)
1796 {
1797     struct topology_node *object;
1798     HRESULT hr;
1799
1800     TRACE("%d, %p.\n", node_type, node);
1801
1802     if (!node)
1803         return E_POINTER;
1804
1805     hr = create_topology_node(node_type, &object);
1806     if (SUCCEEDED(hr))
1807         *node = &object->IMFTopologyNode_iface;
1808
1809     return hr;
1810 }
1811
1812 /* private helper for node types without an actual IMFMediaTypeHandler */
1813 struct type_handler
1814 {
1815     IMFMediaTypeHandler IMFMediaTypeHandler_iface;
1816     LONG refcount;
1817
1818     IMFTopologyNode *node;
1819     DWORD stream;
1820     BOOL output;
1821
1822     IMFTransform *transform;
1823 };
1824
1825 static struct type_handler *impl_from_IMFMediaTypeHandler(IMFMediaTypeHandler *iface)
1826 {
1827     return CONTAINING_RECORD(iface, struct type_handler, IMFMediaTypeHandler_iface);
1828 }
1829
1830 static HRESULT WINAPI type_handler_QueryInterface(IMFMediaTypeHandler *iface, REFIID riid, void **obj)
1831 {
1832     if (IsEqualIID(riid, &IID_IMFMediaTypeHandler)
1833             || IsEqualIID(riid, &IID_IUnknown))
1834     {
1835         IMFMediaTypeHandler_AddRef((*obj = iface));
1836         return S_OK;
1837     }
1838
1839     *obj = NULL;
1840     return E_NOINTERFACE;
1841 }
1842
1843 static ULONG WINAPI type_handler_AddRef(IMFMediaTypeHandler *iface)
1844 {
1845     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1846     ULONG refcount = InterlockedIncrement(&handler->refcount);
1847     return refcount;
1848 }
1849
1850 static ULONG WINAPI type_handler_Release(IMFMediaTypeHandler *iface)
1851 {
1852     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1853     ULONG refcount = InterlockedDecrement(&handler->refcount);
1854
1855     if (!refcount)
1856     {
1857         if (handler->transform)
1858             IMFTransform_Release(handler->transform);
1859         IMFTopologyNode_Release(handler->node);
1860         free(handler);
1861     }
1862
1863     return refcount;
1864 }
1865
1866 static HRESULT WINAPI type_handler_IsMediaTypeSupported(IMFMediaTypeHandler *iface, IMFMediaType *in_type,
1867         IMFMediaType **out_type)
1868 {
1869     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1870     IMFMediaType *type;
1871     DWORD flags;
1872     HRESULT hr;
1873
1874     if (out_type)
1875         *out_type = NULL;
1876
1877     if (handler->transform)
1878     {
1879         if (handler->output)
1880             return IMFTransform_SetOutputType(handler->transform, handler->stream, in_type, MFT_SET_TYPE_TEST_ONLY);
1881         else
1882             return IMFTransform_SetInputType(handler->transform, handler->stream, in_type, MFT_SET_TYPE_TEST_ONLY);
1883     }
1884
1885     if (FAILED(hr = IMFMediaTypeHandler_GetCurrentMediaType(iface, &type)))
1886         return hr;
1887
1888     hr = IMFMediaType_IsEqual(type, in_type, &flags);
1889     IMFMediaType_Release(type);
1890     return hr;
1891 }
1892
1893 static HRESULT WINAPI type_handler_GetMediaTypeCount(IMFMediaTypeHandler *iface, DWORD *count)
1894 {
1895     return E_NOTIMPL;
1896 }
1897
1898 static HRESULT WINAPI type_handler_GetMediaTypeByIndex(IMFMediaTypeHandler *iface, DWORD index,
1899         IMFMediaType **type)
1900 {
1901     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1902
1903     if (handler->transform)
1904     {
1905         if (handler->output)
1906             return IMFTransform_GetOutputAvailableType(handler->transform, handler->stream, index, type);
1907         else
1908             return IMFTransform_GetInputAvailableType(handler->transform, handler->stream, index, type);
1909     }
1910
1911     if (index)
1912         return MF_E_NO_MORE_TYPES;
1913
1914     return IMFMediaTypeHandler_GetCurrentMediaType(iface, type);
1915 }
1916
1917 static HRESULT WINAPI type_handler_SetCurrentMediaType(IMFMediaTypeHandler *iface, IMFMediaType *type)
1918 {
1919     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1920
1921     if (handler->transform)
1922     {
1923         if (handler->output)
1924             return IMFTransform_SetOutputType(handler->transform, handler->stream, type, 0);
1925         else
1926             return IMFTransform_SetInputType(handler->transform, handler->stream, type, 0);
1927     }
1928
1929     return IMFTopologyNode_SetInputPrefType(handler->node, handler->stream, type);
1930 }
1931
1932 static HRESULT WINAPI type_handler_GetCurrentMediaType(IMFMediaTypeHandler *iface, IMFMediaType **type)
1933 {
1934     struct type_handler *handler = impl_from_IMFMediaTypeHandler(iface);
1935     UINT32 output;
1936
1937     if (handler->transform)
1938     {
1939         if (handler->output)
1940             return IMFTransform_GetOutputCurrentType(handler->transform, handler->stream, type);
1941         else
1942             return IMFTransform_GetInputCurrentType(handler->transform, handler->stream, type);
1943     }
1944
1945     if (SUCCEEDED(IMFTopologyNode_GetInputPrefType(handler->node, 0, type)))
1946         return S_OK;
1947
1948     if (FAILED(IMFTopologyNode_GetUINT32(handler->node, &MF_TOPONODE_PRIMARYOUTPUT, &output)))
1949         output = 0;
1950
1951     return IMFTopologyNode_GetOutputPrefType(handler->node, output, type);
1952 }
1953
1954 static HRESULT WINAPI type_handler_GetMajorType(IMFMediaTypeHandler *iface, GUID *type)
1955 {
1956     IMFMediaType *media_type;
1957     HRESULT hr;
1958
1959     if (FAILED(hr = IMFMediaTypeHandler_GetCurrentMediaType(iface, &media_type)))
1960         return hr;
1961
1962     hr = IMFMediaType_GetMajorType(media_type, type);
1963     IMFMediaType_Release(media_type);
1964     return hr;
1965 }
1966
1967 static const IMFMediaTypeHandlerVtbl type_handler_vtbl =
1968 {
1969     type_handler_QueryInterface,
1970     type_handler_AddRef,
1971     type_handler_Release,
1972     type_handler_IsMediaTypeSupported,
1973     type_handler_GetMediaTypeCount,
1974     type_handler_GetMediaTypeByIndex,
1975     type_handler_SetCurrentMediaType,
1976     type_handler_GetCurrentMediaType,
1977     type_handler_GetMajorType,
1978 };
1979
1980 static HRESULT type_handler_create(IMFTopologyNode *node, DWORD stream, BOOL output, IMFTransform *transform, IMFMediaTypeHandler **out)
1981 {
1982     struct type_handler *handler;
1983
1984     if (!(handler = calloc(1, sizeof(*handler)))) return E_OUTOFMEMORY;
1985     handler->IMFMediaTypeHandler_iface.lpVtbl = &type_handler_vtbl;
1986     handler->refcount = 1;
1987     handler->stream = stream;
1988     handler->output = output;
1989     IMFTopologyNode_AddRef((handler->node = node));
1990     if (transform)
1991         IMFTransform_AddRef((handler->transform = transform));
1992
1993     *out = &handler->IMFMediaTypeHandler_iface;
1994     return S_OK;
1995 }
1996
1997 HRESULT topology_node_get_type_handler(IMFTopologyNode *node, DWORD stream,
1998         BOOL output, IMFMediaTypeHandler **handler)
1999 {
2000     MF_TOPOLOGY_TYPE node_type;
2001     IMFStreamSink *stream_sink;
2002     IMFStreamDescriptor *sd;
2003     IMFTransform *transform;
2004     HRESULT hr;
2005
2006     if (FAILED(hr = IMFTopologyNode_GetNodeType(node, &node_type)))
2007         return hr;
2008
2009     switch (node_type)
2010     {
2011         case MF_TOPOLOGY_OUTPUT_NODE:
2012             if (output || stream)
2013                 return MF_E_INVALIDSTREAMNUMBER;
2014
2015             if (SUCCEEDED(hr = topology_node_get_object(node, &IID_IMFStreamSink, (void **)&stream_sink)))
2016             {
2017                 hr = IMFStreamSink_GetMediaTypeHandler(stream_sink, handler);
2018                 IMFStreamSink_Release(stream_sink);
2019             }
2020             break;
2021         case MF_TOPOLOGY_SOURCESTREAM_NODE:
2022             if (!output || stream)
2023                 return MF_E_INVALIDSTREAMNUMBER;
2024
2025             if (SUCCEEDED(hr = IMFTopologyNode_GetUnknown(node, &MF_TOPONODE_STREAM_DESCRIPTOR,
2026                     &IID_IMFStreamDescriptor, (void **)&sd)))
2027             {
2028                 hr = IMFStreamDescriptor_GetMediaTypeHandler(sd, handler);
2029                 IMFStreamDescriptor_Release(sd);
2030             }
2031             break;
2032         case MF_TOPOLOGY_TRANSFORM_NODE:
2033             if (SUCCEEDED(hr = topology_node_get_object(node, &IID_IMFTransform, (void **)&transform)))
2034             {
2035                 hr = type_handler_create(node, stream, output, transform, handler);
2036                 IMFTransform_Release(transform);
2037             }
2038             break;
2039         case MF_TOPOLOGY_TEE_NODE:
2040             hr = type_handler_create(node, stream, output, NULL, handler);
2041             break;
2042         default:
2043             WARN("Unexpected node type %u.\n", node_type);
2044             return MF_E_UNEXPECTED;
2045     }
2046
2047     return hr;
2048 }
2049
2050 /***********************************************************************
2051  *      MFGetTopoNodeCurrentType (mf.@)
2052  */
2053 HRESULT WINAPI MFGetTopoNodeCurrentType(IMFTopologyNode *node, DWORD stream, BOOL output, IMFMediaType **type)
2054 {
2055     IMFMediaTypeHandler *handler;
2056     HRESULT hr;
2057
2058     TRACE("%p, %lu, %d, %p.\n", node, stream, output, type);
2059
2060     if (FAILED(hr = topology_node_get_type_handler(node, stream, output, &handler)))
2061         return hr;
2062
2063     hr = IMFMediaTypeHandler_GetCurrentMediaType(handler, type);
2064     IMFMediaTypeHandler_Release(handler);
2065     return hr;
2066 }
2067
2068 static HRESULT WINAPI seq_source_QueryInterface(IMFSequencerSource *iface, REFIID riid, void **out)
2069 {
2070     struct seq_source *seq_source = impl_from_IMFSequencerSource(iface);
2071
2072     TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), out);
2073
2074     *out = NULL;
2075
2076     if (IsEqualIID(riid, &IID_IMFSequencerSource) ||
2077             IsEqualIID(riid, &IID_IUnknown))
2078     {
2079         *out = &seq_source->IMFSequencerSource_iface;
2080     }
2081     else if (IsEqualIID(riid, &IID_IMFMediaSourceTopologyProvider))
2082     {
2083         *out = &seq_source->IMFMediaSourceTopologyProvider_iface;
2084     }
2085     else
2086     {
2087         WARN("Unimplemented %s.\n", debugstr_guid(riid));
2088         return E_NOINTERFACE;
2089     }
2090
2091     if (*out)
2092         IUnknown_AddRef((IUnknown *)*out);
2093
2094     return S_OK;
2095 }
2096
2097 static ULONG WINAPI seq_source_AddRef(IMFSequencerSource *iface)
2098 {
2099     struct seq_source *seq_source = impl_from_IMFSequencerSource(iface);
2100     ULONG refcount = InterlockedIncrement(&seq_source->refcount);
2101
2102     TRACE("%p, refcount %lu.\n", iface, refcount);
2103
2104     return refcount;
2105 }
2106
2107 static ULONG WINAPI seq_source_Release(IMFSequencerSource *iface)
2108 {
2109     struct seq_source *seq_source = impl_from_IMFSequencerSource(iface);
2110     ULONG refcount = InterlockedDecrement(&seq_source->refcount);
2111
2112     TRACE("%p, refcount %lu.\n", iface, refcount);
2113
2114     if (!refcount)
2115         free(seq_source);
2116
2117     return refcount;
2118 }
2119
2120 static HRESULT WINAPI seq_source_AppendTopology(IMFSequencerSource *iface, IMFTopology *topology,
2121         DWORD flags, MFSequencerElementId *id)
2122 {
2123     FIXME("%p, %p, %lx, %p.\n", iface, topology, flags, id);
2124
2125     return E_NOTIMPL;
2126 }
2127
2128 static HRESULT WINAPI seq_source_DeleteTopology(IMFSequencerSource *iface, MFSequencerElementId id)
2129 {
2130     FIXME("%p, %#lx.\n", iface, id);
2131
2132     return E_NOTIMPL;
2133 }
2134
2135 static HRESULT WINAPI seq_source_GetPresentationContext(IMFSequencerSource *iface,
2136         IMFPresentationDescriptor *descriptor, MFSequencerElementId *id, IMFTopology **topology)
2137 {
2138     FIXME("%p, %p, %p, %p.\n", iface, descriptor, id, topology);
2139
2140     return E_NOTIMPL;
2141 }
2142
2143 static HRESULT WINAPI seq_source_UpdateTopology(IMFSequencerSource *iface, MFSequencerElementId id,
2144         IMFTopology *topology)
2145 {
2146     FIXME("%p, %#lx, %p.\n", iface, id, topology);
2147
2148     return E_NOTIMPL;
2149 }
2150
2151 static HRESULT WINAPI seq_source_UpdateTopologyFlags(IMFSequencerSource *iface, MFSequencerElementId id, DWORD flags)
2152 {
2153     FIXME("%p, %#lx, %#lx.\n", iface, id, flags);
2154
2155     return E_NOTIMPL;
2156 }
2157
2158 static HRESULT WINAPI seq_source_topology_provider_QueryInterface(IMFMediaSourceTopologyProvider *iface, REFIID riid,
2159         void **obj)
2160 {
2161     struct seq_source *seq_source = impl_from_IMFMediaSourceTopologyProvider(iface);
2162     return IMFSequencerSource_QueryInterface(&seq_source->IMFSequencerSource_iface, riid, obj);
2163 }
2164
2165 static ULONG WINAPI seq_source_topology_provider_AddRef(IMFMediaSourceTopologyProvider *iface)
2166 {
2167     struct seq_source *seq_source = impl_from_IMFMediaSourceTopologyProvider(iface);
2168     return IMFSequencerSource_AddRef(&seq_source->IMFSequencerSource_iface);
2169 }
2170
2171 static ULONG WINAPI seq_source_topology_provider_Release(IMFMediaSourceTopologyProvider *iface)
2172 {
2173     struct seq_source *seq_source = impl_from_IMFMediaSourceTopologyProvider(iface);
2174     return IMFSequencerSource_Release(&seq_source->IMFSequencerSource_iface);
2175 }
2176
2177 static HRESULT WINAPI seq_source_topology_provider_GetMediaSourceTopology(IMFMediaSourceTopologyProvider *iface,
2178         IMFPresentationDescriptor *pd, IMFTopology **topology)
2179 {
2180     FIXME("%p, %p, %p.\n", iface, pd, topology);
2181
2182     return E_NOTIMPL;
2183 }
2184
2185 static const IMFMediaSourceTopologyProviderVtbl seq_source_topology_provider_vtbl =
2186 {
2187     seq_source_topology_provider_QueryInterface,
2188     seq_source_topology_provider_AddRef,
2189     seq_source_topology_provider_Release,
2190     seq_source_topology_provider_GetMediaSourceTopology,
2191 };
2192
2193 static const IMFSequencerSourceVtbl seqsourcevtbl =
2194 {
2195     seq_source_QueryInterface,
2196     seq_source_AddRef,
2197     seq_source_Release,
2198     seq_source_AppendTopology,
2199     seq_source_DeleteTopology,
2200     seq_source_GetPresentationContext,
2201     seq_source_UpdateTopology,
2202     seq_source_UpdateTopologyFlags,
2203 };
2204
2205 /***********************************************************************
2206  *      MFCreateSequencerSource (mf.@)
2207  */
2208 HRESULT WINAPI MFCreateSequencerSource(IUnknown *reserved, IMFSequencerSource **seq_source)
2209 {
2210     struct seq_source *object;
2211
2212     TRACE("%p, %p.\n", reserved, seq_source);
2213
2214     if (!seq_source)
2215         return E_POINTER;
2216
2217     if (!(object = calloc(1, sizeof(*object))))
2218         return E_OUTOFMEMORY;
2219
2220     object->IMFSequencerSource_iface.lpVtbl = &seqsourcevtbl;
2221     object->IMFMediaSourceTopologyProvider_iface.lpVtbl = &seq_source_topology_provider_vtbl;
2222     object->refcount = 1;
2223
2224     *seq_source = &object->IMFSequencerSource_iface;
2225
2226     return S_OK;
2227 }