dlls/mf/topology_loader.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 #include <stdarg.h>
  20 #include <stddef.h>
  21
  22 #define COBJMACROS
  23 #include "windef.h"
  24 #include "winbase.h"
  25
  26 #include "mfidl.h"
  27
  28 #include "wine/debug.h"
  29 #include "wine/list.h"
  30
  31 #include "mf_private.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(mfplat);
  34
  35 struct topology_loader
  36 {
  37     IMFTopoLoader IMFTopoLoader_iface;
  38     LONG refcount;
  39 };
  40
  41 static inline struct topology_loader *impl_from_IMFTopoLoader(IMFTopoLoader *iface)
  42 {
  43     return CONTAINING_RECORD(iface, struct topology_loader, IMFTopoLoader_iface);
  44 }
  45
  46 static HRESULT WINAPI topology_loader_QueryInterface(IMFTopoLoader *iface, REFIID riid, void **out)
  47 {
  48     TRACE("iface %p, riid %s, out %p.\n", iface, debugstr_guid(riid), out);
  49
  50     if (IsEqualIID(riid, &IID_IMFTopoLoader)
  51             || IsEqualIID(riid, &IID_IUnknown))
  52     {
  53         *out = iface;
  54         IMFTopoLoader_AddRef(iface);
  55         return S_OK;
  56     }
  57
  58     WARN("Unsupported %s.\n", debugstr_guid(riid));
  59     *out = NULL;
  60     return E_NOINTERFACE;
  61 }
  62
  63 static ULONG WINAPI topology_loader_AddRef(IMFTopoLoader *iface)
  64 {
  65     struct topology_loader *loader = impl_from_IMFTopoLoader(iface);
  66     ULONG refcount = InterlockedIncrement(&loader->refcount);
  67     TRACE("iface %p, refcount %lu.\n", iface, refcount);
  68     return refcount;
  69 }
  70
  71 static ULONG WINAPI topology_loader_Release(IMFTopoLoader *iface)
  72 {
  73     struct topology_loader *loader = impl_from_IMFTopoLoader(iface);
  74     ULONG refcount = InterlockedDecrement(&loader->refcount);
  75
  76     TRACE("iface %p, refcount %lu.\n", iface, refcount);
  77
  78     if (!refcount)
  79         free(loader);
  80
  81     return refcount;
  82 }
  83
  84 struct topoloader_context
  85 {
  86     IMFTopology *input_topology;
  87     IMFTopology *output_topology;
  88 };
  89
  90 static HRESULT topology_loader_clone_node(struct topoloader_context *context, IMFTopologyNode *node, IMFTopologyNode **clone)
  91 {
  92     MF_TOPOLOGY_TYPE node_type;
  93     HRESULT hr;
  94     TOPOID id;
  95
  96     if (FAILED(hr = IMFTopologyNode_GetTopoNodeID(node, &id)))
  97         return hr;
  98     if (SUCCEEDED(hr = IMFTopology_GetNodeByID(context->output_topology, id, clone)))
  99         return hr;
 100
 101     IMFTopologyNode_GetNodeType(node, &node_type);
 102     if (FAILED(hr = MFCreateTopologyNode(node_type, clone)))
 103         return hr;
 104
 105     hr = IMFTopologyNode_CloneFrom(*clone, node);
 106     if (SUCCEEDED(hr))
 107         hr = IMFTopology_AddNode(context->output_topology, *clone);
 108
 109     if (FAILED(hr))
 110     {
 111         IMFTopologyNode_Release(*clone);
 112         *clone = NULL;
 113     }
 114     return hr;
 115 }
 116
 117 struct transform_output_type
 118 {
 119     IMFMediaType *type;
 120     IMFTransform *transform;
 121     IMFActivate *activate;
 122 };
 123
 124 struct connect_context
 125 {
 126     struct topoloader_context *context;
 127     IMFTopologyNode *upstream_node;
 128     IMFTopologyNode *sink;
 129     IMFMediaTypeHandler *sink_handler;
 130     unsigned int output_index;
 131     unsigned int input_index;
 132     GUID converter_category;
 133     GUID decoder_category;
 134 };
 135
 136 struct topology_branch
 137 {
 138     struct
 139     {
 140         IMFTopologyNode *node;
 141         DWORD stream;
 142     } up, down;
 143
 144     struct list entry;
 145 };
 146
 147 static const char *debugstr_topology_branch(struct topology_branch *branch)
 148 {
 149     return wine_dbg_sprintf("%p:%lu to %p:%lu", branch->up.node, branch->up.stream, branch->down.node, branch->down.stream);
 150 }
 151
 152 static HRESULT topology_branch_create(IMFTopologyNode *source, DWORD source_stream,
 153             IMFTopologyNode *sink, DWORD sink_stream, struct topology_branch **out)
 154 {
 155     struct topology_branch *branch;
 156
 157     if (!(branch = calloc(1, sizeof(*branch))))
 158         return E_OUTOFMEMORY;
 159
 160     IMFTopologyNode_AddRef((branch->up.node = source));
 161     branch->up.stream = source_stream;
 162     IMFTopologyNode_AddRef((branch->down.node = sink));
 163     branch->down.stream = sink_stream;
 164
 165     *out = branch;
 166     return S_OK;
 167 }
 168
 169 static void topology_branch_destroy(struct topology_branch *branch)
 170 {
 171     IMFTopologyNode_Release(branch->up.node);
 172     IMFTopologyNode_Release(branch->down.node);
 173     free(branch);
 174 }
 175
 176 static HRESULT topology_branch_clone_nodes(struct topoloader_context *context, struct topology_branch *branch)
 177 {
 178     IMFTopologyNode *up, *down;
 179     HRESULT hr;
 180
 181     if (FAILED(hr = topology_loader_clone_node(context, branch->up.node, &up)))
 182         return hr;
 183     if (FAILED(hr = topology_loader_clone_node(context, branch->down.node, &down)))
 184     {
 185         IMFTopologyNode_Release(up);
 186         return hr;
 187     }
 188
 189     IMFTopologyNode_Release(branch->up.node);
 190     IMFTopologyNode_Release(branch->down.node);
 191     branch->up.node = up;
 192     branch->down.node = down;
 193     return hr;
 194 }
 195
 196 static HRESULT topology_node_list_branches(IMFTopologyNode *node, struct list *branches)
 197 {
 198     struct topology_branch *branch;
 199     DWORD i, count, down_stream;
 200     IMFTopologyNode *down_node;
 201     HRESULT hr;
 202
 203     hr = IMFTopologyNode_GetOutputCount(node, &count);
 204     for (i = 0; SUCCEEDED(hr) && i < count; ++i)
 205     {
 206         if (FAILED(IMFTopologyNode_GetOutput(node, i, &down_node, &down_stream)))
 207             continue;
 208
 209         if (SUCCEEDED(hr = topology_branch_create(node, i, down_node, down_stream, &branch)))
 210             list_add_tail(branches, &branch->entry);
 211
 212         IMFTopologyNode_Release(down_node);
 213     }
 214
 215     return hr;
 216 }
 217
 218 static HRESULT topology_branch_fill_media_type(IMFMediaType *up_type, IMFMediaType *down_type)
 219 {
 220     HRESULT hr = S_OK;
 221     PROPVARIANT value;
 222     UINT32 count;
 223     GUID key;
 224
 225     if (FAILED(hr = IMFMediaType_GetCount(up_type, &count)))
 226         return hr;
 227
 228     while (count--)
 229     {
 230         PropVariantInit(&value);
 231         hr = IMFMediaType_GetItemByIndex(up_type, count, &key, &value);
 232         if (SUCCEEDED(hr) && FAILED(IMFMediaType_GetItem(down_type, &key, NULL)))
 233             hr = IMFMediaType_SetItem(down_type, &key, &value);
 234         PropVariantClear(&value);
 235         if (FAILED(hr))
 236             return hr;
 237     }
 238
 239     return hr;
 240 }
 241
 242 static HRESULT topology_branch_connect(IMFTopology *topology, MF_CONNECT_METHOD method_mask,
 243         struct topology_branch *branch, BOOL enumerate_source_types);
 244 static HRESULT topology_branch_connect_down(IMFTopology *topology, MF_CONNECT_METHOD method_mask,
 245         struct topology_branch *branch, IMFMediaType *up_type);
 246 static HRESULT topology_branch_connect_indirect(IMFTopology *topology, MF_CONNECT_METHOD method_mask,
 247         struct topology_branch *branch, IMFMediaType *up_type, IMFMediaType *down_type)
 248 {
 249     BOOL decoder = (method_mask & MF_CONNECT_ALLOW_DECODER) == MF_CONNECT_ALLOW_DECODER;
 250     MFT_REGISTER_TYPE_INFO input_info, output_info;
 251     IMFTransform *transform;
 252     IMFActivate **activates;
 253     IMFTopologyNode *node;
 254     unsigned int i, count;
 255     GUID category, guid;
 256     HRESULT hr;
 257
 258     TRACE("topology %p, method_mask %#x, branch %s, up_type %p, down_type %p.\n",
 259             topology, method_mask, debugstr_topology_branch(branch), up_type, down_type);
 260
 261     if (FAILED(hr = IMFMediaType_GetMajorType(up_type, &input_info.guidMajorType)))
 262         return hr;
 263     if (FAILED(hr = IMFMediaType_GetGUID(up_type, &MF_MT_SUBTYPE, &input_info.guidSubtype)))
 264         return hr;
 265     if (!down_type)
 266         output_info = input_info;
 267     else
 268     {
 269         if (FAILED(hr = IMFMediaType_GetMajorType(down_type, &output_info.guidMajorType)))
 270             return hr;
 271         if (FAILED(hr = IMFMediaType_GetGUID(down_type, &MF_MT_SUBTYPE, &output_info.guidSubtype)))
 272             return hr;
 273     }
 274
 275     if (IsEqualGUID(&input_info.guidMajorType, &MFMediaType_Audio))
 276         category = decoder ? MFT_CATEGORY_AUDIO_DECODER : MFT_CATEGORY_AUDIO_EFFECT;
 277     else if (IsEqualGUID(&input_info.guidMajorType, &MFMediaType_Video))
 278         category = decoder ? MFT_CATEGORY_VIDEO_DECODER : MFT_CATEGORY_VIDEO_PROCESSOR;
 279     else
 280         return MF_E_INVALIDMEDIATYPE;
 281
 282     if (FAILED(hr = MFCreateTopologyNode(MF_TOPOLOGY_TRANSFORM_NODE, &node)))
 283         return hr;
 284     if (!decoder)
 285         method_mask = MF_CONNECT_DIRECT;
 286     else
 287     {
 288         IMFTopologyNode_SetUINT32(node, &MF_TOPONODE_DECODER, 1);
 289         method_mask = MF_CONNECT_ALLOW_CONVERTER;
 290     }
 291
 292     if (FAILED(hr = MFTEnumEx(category, MFT_ENUM_FLAG_ALL, &input_info, decoder ? NULL : &output_info, &activates, &count)))
 293         return hr;
 294
 295     for (i = 0, hr = MF_E_TRANSFORM_NOT_POSSIBLE_FOR_CURRENT_MEDIATYPE_COMBINATION; i < count; ++i)
 296     {
 297         struct topology_branch down_branch = {.up.node = node, .down = branch->down};
 298         struct topology_branch up_branch = {.up = branch->up, .down.node = node};
 299
 300         if (FAILED(IMFActivate_ActivateObject(activates[i], &IID_IMFTransform, (void **)&transform)))
 301             continue;
 302
 303         IMFTopologyNode_SetObject(node, (IUnknown *)transform);
 304         IMFTopologyNode_DeleteItem(node, &MF_TOPONODE_TRANSFORM_OBJECTID);
 305         if (SUCCEEDED(IMFActivate_GetGUID(activates[i], &MFT_TRANSFORM_CLSID_Attribute, &guid)))
 306             IMFTopologyNode_SetGUID(node, &MF_TOPONODE_TRANSFORM_OBJECTID, &guid);
 307
 308         hr = topology_branch_connect_down(topology, MF_CONNECT_DIRECT, &up_branch, up_type);
 309         if (down_type)
 310         {
 311             if (SUCCEEDED(hr))
 312                 hr = topology_branch_fill_media_type(up_type, down_type);
 313             if (SUCCEEDED(hr))
 314                 hr = IMFTransform_SetOutputType(transform, 0, down_type, 0);
 315             if (SUCCEEDED(hr))
 316                 method_mask = MF_CONNECT_DIRECT;
 317         }
 318         IMFTransform_Release(transform);
 319
 320         if (SUCCEEDED(hr))
 321             hr = topology_branch_connect(topology, method_mask, &down_branch, !down_type);
 322         if (SUCCEEDED(hr))
 323             hr = IMFTopology_AddNode(topology, node);
 324         if (SUCCEEDED(hr))
 325             break;
 326     }
 327
 328     IMFTopologyNode_Release(node);
 329     for (i = 0; i < count; ++i)
 330         IMFActivate_Release(activates[i]);
 331     CoTaskMemFree(activates);
 332
 333     if (!count)
 334         return MF_E_TOPO_CODEC_NOT_FOUND;
 335     return hr;
 336 }
 337
 338 static HRESULT topology_branch_get_current_type(IMFMediaTypeHandler *handler, IMFMediaType **type)
 339 {
 340     IMFMediaType *media_type;
 341     HRESULT hr;
 342     DWORD i;
 343
 344     hr = IMFMediaTypeHandler_GetCurrentMediaType(handler, type);
 345     if (hr != MF_E_NOT_INITIALIZED)
 346         return hr;
 347
 348     for (i = 0; SUCCEEDED(hr = IMFMediaTypeHandler_GetMediaTypeByIndex(handler, i, &media_type)); i++)
 349     {
 350         if (SUCCEEDED(hr = IMFMediaTypeHandler_IsMediaTypeSupported(handler, media_type, NULL)))
 351         {
 352             *type = media_type;
 353             return hr;
 354         }
 355
 356         IMFMediaType_Release(media_type);
 357     }
 358
 359     return hr;
 360 }
 361
 362 static HRESULT topology_branch_connect_down(IMFTopology *topology, MF_CONNECT_METHOD method_mask,
 363         struct topology_branch *branch, IMFMediaType *up_type)
 364 {
 365     IMFMediaTypeHandler *down_handler;
 366     IMFMediaType *down_type = NULL;
 367     MF_CONNECT_METHOD method;
 368     DWORD flags;
 369     HRESULT hr;
 370
 371     TRACE("topology %p, method_mask %#x, branch %s, up_type %p.\n",
 372             topology, method_mask, debugstr_topology_branch(branch), up_type);
 373
 374     if (FAILED(IMFTopologyNode_GetUINT32(branch->down.node, &MF_TOPONODE_CONNECT_METHOD, &method)))
 375         method = MF_CONNECT_ALLOW_DECODER;
 376
 377     if (FAILED(hr = topology_node_get_type_handler(branch->down.node, branch->down.stream, FALSE, &down_handler)))
 378         return hr;
 379
 380     if (SUCCEEDED(hr = topology_branch_get_current_type(down_handler, &down_type))
 381             && IMFMediaType_IsEqual(up_type, down_type, &flags) == S_OK)
 382     {
 383         TRACE("Connecting branch %s with current type %p.\n", debugstr_topology_branch(branch), up_type);
 384         hr = IMFTopologyNode_ConnectOutput(branch->up.node, branch->up.stream, branch->down.node, branch->down.stream);
 385         goto done;
 386     }
 387
 388     if (SUCCEEDED(hr = IMFMediaTypeHandler_IsMediaTypeSupported(down_handler, up_type, NULL))
 389             && SUCCEEDED(hr = IMFMediaTypeHandler_SetCurrentMediaType(down_handler, up_type)))
 390     {
 391         TRACE("Connected branch %s with upstream type %p.\n", debugstr_topology_branch(branch), up_type);
 392         hr = IMFTopologyNode_ConnectOutput(branch->up.node, branch->up.stream, branch->down.node, branch->down.stream);
 393         goto done;
 394     }
 395
 396     if (FAILED(hr) && (method & method_mask & MF_CONNECT_ALLOW_CONVERTER) == MF_CONNECT_ALLOW_CONVERTER)
 397         hr = topology_branch_connect_indirect(topology, MF_CONNECT_ALLOW_CONVERTER,
 398                 branch, up_type, down_type);
 399
 400     if (FAILED(hr) && (method & method_mask & MF_CONNECT_ALLOW_DECODER) == MF_CONNECT_ALLOW_DECODER)
 401         hr = topology_branch_connect_indirect(topology, MF_CONNECT_ALLOW_DECODER,
 402                 branch, up_type, down_type);
 403
 404 done:
 405     if (down_type)
 406         IMFMediaType_Release(down_type);
 407     IMFMediaTypeHandler_Release(down_handler);
 408
 409     return hr;
 410 }
 411
 412 static HRESULT topology_branch_foreach_up_types(IMFTopology *topology, MF_CONNECT_METHOD method_mask,
 413         struct topology_branch *branch)
 414 {
 415     IMFMediaTypeHandler *handler;
 416     IMFMediaType *type;
 417     DWORD index = 0;
 418     HRESULT hr;
 419
 420     if (FAILED(hr = topology_node_get_type_handler(branch->up.node, branch->up.stream, TRUE, &handler)))
 421         return hr;
 422
 423     while (SUCCEEDED(hr = IMFMediaTypeHandler_GetMediaTypeByIndex(handler, index++, &type)))
 424     {
 425         hr = topology_branch_connect_down(topology, method_mask, branch, type);
 426         if (SUCCEEDED(hr))
 427             hr = IMFMediaTypeHandler_SetCurrentMediaType(handler, type);
 428         IMFMediaType_Release(type);
 429         if (SUCCEEDED(hr))
 430             break;
 431     }
 432
 433     IMFMediaTypeHandler_Release(handler);
 434     return hr;
 435 }
 436
 437 static HRESULT topology_branch_connect(IMFTopology *topology, MF_CONNECT_METHOD method_mask,
 438         struct topology_branch *branch, BOOL enumerate_source_types)
 439 {
 440     MF_CONNECT_METHOD method;
 441     HRESULT hr;
 442
 443     TRACE("topology %p, method_mask %#x, branch %s.\n", topology, method_mask, debugstr_topology_branch(branch));
 444
 445     if (FAILED(IMFTopologyNode_GetUINT32(branch->up.node, &MF_TOPONODE_CONNECT_METHOD, &method)))
 446         method = MF_CONNECT_DIRECT;
 447
 448     if (enumerate_source_types)
 449     {
 450         if (method & MF_CONNECT_RESOLVE_INDEPENDENT_OUTPUTTYPES)
 451             hr = topology_branch_foreach_up_types(topology, method_mask & MF_CONNECT_ALLOW_DECODER, branch);
 452         else
 453         {
 454             hr = topology_branch_foreach_up_types(topology, method_mask & MF_CONNECT_DIRECT, branch);
 455             if (FAILED(hr))
 456                 hr = topology_branch_foreach_up_types(topology, method_mask & MF_CONNECT_ALLOW_CONVERTER, branch);
 457             if (FAILED(hr))
 458                 hr = topology_branch_foreach_up_types(topology, method_mask & MF_CONNECT_ALLOW_DECODER, branch);
 459         }
 460     }
 461     else
 462     {
 463         IMFMediaTypeHandler *up_handler;
 464         IMFMediaType *up_type;
 465
 466         if (FAILED(hr = topology_node_get_type_handler(branch->up.node, branch->up.stream, TRUE, &up_handler)))
 467             return hr;
 468         if (SUCCEEDED(hr = IMFMediaTypeHandler_GetCurrentMediaType(up_handler, &up_type))
 469                 || SUCCEEDED(hr = IMFMediaTypeHandler_GetMediaTypeByIndex(up_handler, 0, &up_type)))
 470         {
 471             hr = topology_branch_connect_down(topology, method_mask, branch, up_type);
 472             IMFMediaType_Release(up_type);
 473         }
 474         IMFMediaTypeHandler_Release(up_handler);
 475     }
 476
 477     TRACE("returning %#lx\n", hr);
 478     return hr;
 479 }
 480
 481 static HRESULT topology_loader_resolve_branches(struct topoloader_context *context, struct list *branches,
 482         BOOL enumerate_source_types)
 483 {
 484     struct list new_branches = LIST_INIT(new_branches);
 485     struct topology_branch *branch, *next;
 486     MF_TOPOLOGY_TYPE node_type;
 487     HRESULT hr = S_OK;
 488
 489     LIST_FOR_EACH_ENTRY_SAFE(branch, next, branches, struct topology_branch, entry)
 490     {
 491         list_remove(&branch->entry);
 492
 493         if (FAILED(hr = topology_node_list_branches(branch->down.node, &new_branches)))
 494             WARN("Failed to list branches from branch %s\n", debugstr_topology_branch(branch));
 495         else if (FAILED(hr = IMFTopologyNode_GetNodeType(branch->up.node, &node_type)))
 496             WARN("Failed to get source node type for branch %s\n", debugstr_topology_branch(branch));
 497         else if (FAILED(hr = topology_branch_clone_nodes(context, branch)))
 498             WARN("Failed to clone nodes for branch %s\n", debugstr_topology_branch(branch));
 499         else
 500             hr = topology_branch_connect(context->output_topology, MF_CONNECT_ALLOW_DECODER,
 501                     branch, enumerate_source_types);
 502
 503         topology_branch_destroy(branch);
 504         if (FAILED(hr))
 505             break;
 506     }
 507
 508     list_move_tail(branches, &new_branches);
 509     return hr;
 510 }
 511
 512 static BOOL topology_loader_is_node_d3d_aware(IMFTopologyNode *node)
 513 {
 514     IMFAttributes *attributes;
 515     unsigned int d3d_aware = 0;
 516     IMFTransform *transform;
 517
 518     if (FAILED(topology_node_get_object(node, &IID_IMFAttributes, (void **)&attributes)))
 519         return FALSE;
 520
 521     IMFAttributes_GetUINT32(attributes, &MF_SA_D3D_AWARE, &d3d_aware);
 522     IMFAttributes_Release(attributes);
 523
 524     if (!d3d_aware && SUCCEEDED(topology_node_get_object(node, &IID_IMFTransform, (void **)&transform)))
 525     {
 526         d3d_aware = mf_is_sample_copier_transform(transform);
 527         IMFTransform_Release(transform);
 528     }
 529
 530     return !!d3d_aware;
 531 }
 532
 533 static HRESULT topology_loader_create_copier(IMFTopologyNode *upstream_node, DWORD upstream_output,
 534         IMFTopologyNode *downstream_node, unsigned int downstream_input, IMFTransform **copier)
 535 {
 536     IMFMediaType *input_type = NULL, *output_type = NULL;
 537     IMFTransform *transform;
 538     HRESULT hr;
 539
 540     if (FAILED(hr = MFCreateSampleCopierMFT(&transform)))
 541         return hr;
 542
 543     if (FAILED(hr = MFGetTopoNodeCurrentType(upstream_node, upstream_output, TRUE, &input_type)))
 544         WARN("Failed to get upstream media type hr %#lx.\n", hr);
 545
 546     if (SUCCEEDED(hr) && FAILED(hr = MFGetTopoNodeCurrentType(downstream_node, downstream_input, FALSE, &output_type)))
 547         WARN("Failed to get downstream media type hr %#lx.\n", hr);
 548
 549     if (SUCCEEDED(hr) && FAILED(hr = IMFTransform_SetInputType(transform, 0, input_type, 0)))
 550         WARN("Input type wasn't accepted, hr %#lx.\n", hr);
 551
 552     if (SUCCEEDED(hr) && FAILED(hr = IMFTransform_SetOutputType(transform, 0, output_type, 0)))
 553         WARN("Output type wasn't accepted, hr %#lx.\n", hr);
 554
 555     if (SUCCEEDED(hr))
 556     {
 557         *copier = transform;
 558         IMFTransform_AddRef(*copier);
 559     }
 560
 561     if (input_type)
 562         IMFMediaType_Release(input_type);
 563     if (output_type)
 564         IMFMediaType_Release(output_type);
 565
 566     IMFTransform_Release(transform);
 567
 568     return hr;
 569 }
 570
 571 static HRESULT topology_loader_connect_copier(struct topoloader_context *context, IMFTopologyNode *upstream_node,
 572         DWORD upstream_output, IMFTopologyNode *downstream_node, DWORD downstream_input, IMFTransform *copier)
 573 {
 574     IMFTopologyNode *copier_node;
 575     HRESULT hr;
 576
 577     if (FAILED(hr = MFCreateTopologyNode(MF_TOPOLOGY_TRANSFORM_NODE, &copier_node)))
 578         return hr;
 579
 580     IMFTopologyNode_SetObject(copier_node, (IUnknown *)copier);
 581     IMFTopology_AddNode(context->output_topology, copier_node);
 582     IMFTopologyNode_ConnectOutput(upstream_node, upstream_output, copier_node, 0);
 583     IMFTopologyNode_ConnectOutput(copier_node, 0, downstream_node, downstream_input);
 584
 585     IMFTopologyNode_Release(copier_node);
 586
 587     return S_OK;
 588 }
 589
 590 /* Right now this should be used for output nodes only. */
 591 static HRESULT topology_loader_connect_d3d_aware_input(struct topoloader_context *context,
 592         IMFTopologyNode *node)
 593 {
 594     IMFTopologyNode *upstream_node;
 595     IMFTransform *copier = NULL;
 596     IMFStreamSink *stream_sink;
 597     DWORD upstream_output;
 598     HRESULT hr;
 599
 600     if (FAILED(hr = topology_node_get_object(node, &IID_IMFStreamSink, (void **)&stream_sink)))
 601         return hr;
 602
 603     if (topology_loader_is_node_d3d_aware(node))
 604     {
 605         if (SUCCEEDED(IMFTopologyNode_GetInput(node, 0, &upstream_node, &upstream_output)))
 606         {
 607             if (!topology_loader_is_node_d3d_aware(upstream_node))
 608             {
 609                 if (SUCCEEDED(hr = topology_loader_create_copier(upstream_node, upstream_output, node, 0, &copier)))
 610                 {
 611                     hr = topology_loader_connect_copier(context, upstream_node, upstream_output, node, 0, copier);
 612                     IMFTransform_Release(copier);
 613                 }
 614             }
 615             IMFTopologyNode_Release(upstream_node);
 616         }
 617     }
 618
 619     IMFStreamSink_Release(stream_sink);
 620
 621     return hr;
 622 }
 623
 624 static void topology_loader_resolve_complete(struct topoloader_context *context)
 625 {
 626     MF_TOPOLOGY_TYPE node_type;
 627     IMFTopologyNode *node;
 628     WORD i, node_count;
 629     HRESULT hr;
 630
 631     IMFTopology_GetNodeCount(context->output_topology, &node_count);
 632
 633     for (i = 0; i < node_count; ++i)
 634     {
 635         if (SUCCEEDED(IMFTopology_GetNode(context->output_topology, i, &node)))
 636         {
 637             IMFTopologyNode_GetNodeType(node, &node_type);
 638
 639             if (node_type == MF_TOPOLOGY_OUTPUT_NODE)
 640             {
 641                 /* Set MF_TOPONODE_STREAMID for all outputs. */
 642                 if (FAILED(IMFTopologyNode_GetItem(node, &MF_TOPONODE_STREAMID, NULL)))
 643                     IMFTopologyNode_SetUINT32(node, &MF_TOPONODE_STREAMID, 0);
 644
 645                 if (FAILED(hr = topology_loader_connect_d3d_aware_input(context, node)))
 646                     WARN("Failed to connect D3D-aware input, hr %#lx.\n", hr);
 647             }
 648             else if (node_type == MF_TOPOLOGY_SOURCESTREAM_NODE)
 649             {
 650                 /* Set MF_TOPONODE_MEDIASTART for all sources. */
 651                 if (FAILED(IMFTopologyNode_GetItem(node, &MF_TOPONODE_MEDIASTART, NULL)))
 652                     IMFTopologyNode_SetUINT64(node, &MF_TOPONODE_MEDIASTART, 0);
 653             }
 654
 655             IMFTopologyNode_Release(node);
 656         }
 657     }
 658 }
 659
 660 static HRESULT WINAPI topology_loader_Load(IMFTopoLoader *iface, IMFTopology *input_topology,
 661         IMFTopology **ret_topology, IMFTopology *current_topology)
 662 {
 663     struct list branches = LIST_INIT(branches);
 664     struct topoloader_context context = { 0 };
 665     struct topology_branch *branch, *next;
 666     UINT32 enumerate_source_types;
 667     IMFTopology *output_topology;
 668     MF_TOPOLOGY_TYPE node_type;
 669     IMFTopologyNode *node;
 670     unsigned short i = 0;
 671     IMFStreamSink *sink;
 672     IUnknown *object;
 673     HRESULT hr = E_FAIL;
 674
 675     FIXME("iface %p, input_topology %p, ret_topology %p, current_topology %p stub!\n",
 676           iface, input_topology, ret_topology, current_topology);
 677
 678     if (current_topology)
 679         FIXME("Current topology instance is ignored.\n");
 680
 681     /* Basic sanity checks for input topology:
 682
 683        - source nodes must have stream descriptor set;
 684        - sink nodes must be resolved to stream sink objects;
 685     */
 686     while (SUCCEEDED(IMFTopology_GetNode(input_topology, i++, &node)))
 687     {
 688         IMFTopologyNode_GetNodeType(node, &node_type);
 689
 690         switch (node_type)
 691         {
 692             case MF_TOPOLOGY_OUTPUT_NODE:
 693                 if (SUCCEEDED(hr = IMFTopologyNode_GetObject(node, &object)))
 694                 {
 695                     /* Sinks must be bound beforehand. */
 696                     if (FAILED(IUnknown_QueryInterface(object, &IID_IMFStreamSink, (void **)&sink)))
 697                         hr = MF_E_TOPO_SINK_ACTIVATES_UNSUPPORTED;
 698                     else if (sink)
 699                         IMFStreamSink_Release(sink);
 700                     IUnknown_Release(object);
 701                 }
 702                 break;
 703             case MF_TOPOLOGY_SOURCESTREAM_NODE:
 704                 hr = IMFTopologyNode_GetItem(node, &MF_TOPONODE_STREAM_DESCRIPTOR, NULL);
 705                 break;
 706             default:
 707                 ;
 708         }
 709
 710         IMFTopologyNode_Release(node);
 711         if (FAILED(hr))
 712             return hr;
 713     }
 714
 715     if (FAILED(hr = MFCreateTopology(&output_topology)))
 716         return hr;
 717
 718     IMFTopology_CopyAllItems(input_topology, (IMFAttributes *)output_topology);
 719
 720     context.input_topology = input_topology;
 721     context.output_topology = output_topology;
 722
 723     for (i = 0; SUCCEEDED(IMFTopology_GetNode(input_topology, i, &node)); i++)
 724     {
 725         hr = topology_node_list_branches(node, &branches);
 726         IMFTopologyNode_Release(node);
 727         if (FAILED(hr))
 728             break;
 729     }
 730     if (SUCCEEDED(hr) && list_empty(&branches))
 731         hr = MF_E_TOPO_UNSUPPORTED;
 732
 733     if (FAILED(IMFTopology_GetUINT32(input_topology, &MF_TOPOLOGY_ENUMERATE_SOURCE_TYPES,
 734             &enumerate_source_types)))
 735         enumerate_source_types = 0;
 736
 737     while (SUCCEEDED(hr) && !list_empty(&branches))
 738         hr = topology_loader_resolve_branches(&context, &branches, enumerate_source_types);
 739
 740     LIST_FOR_EACH_ENTRY_SAFE(branch, next, &branches, struct topology_branch, entry)
 741     {
 742         WARN("Failed to resolve branch %s\n", debugstr_topology_branch(branch));
 743         list_remove(&branch->entry);
 744         topology_branch_destroy(branch);
 745     }
 746
 747     if (FAILED(hr))
 748         IMFTopology_Release(output_topology);
 749     else
 750     {
 751         topology_loader_resolve_complete(&context);
 752         *ret_topology = output_topology;
 753     }
 754
 755     return hr;
 756 }
 757
 758 static const IMFTopoLoaderVtbl topology_loader_vtbl =
 759 {
 760     topology_loader_QueryInterface,
 761     topology_loader_AddRef,
 762     topology_loader_Release,
 763     topology_loader_Load,
 764 };
 765
 766 /***********************************************************************
 767  *      MFCreateTopoLoader (mf.@)
 768  */
 769 HRESULT WINAPI MFCreateTopoLoader(IMFTopoLoader **loader)
 770 {
 771     struct topology_loader *object;
 772
 773     TRACE("loader %p.\n", loader);
 774
 775     if (!loader)
 776         return E_POINTER;
 777
 778     if (!(object = calloc(1, sizeof(*object))))
 779         return E_OUTOFMEMORY;
 780
 781     object->IMFTopoLoader_iface.lpVtbl = &topology_loader_vtbl;
 782     object->refcount = 1;
 783
 784     *loader = &object->IMFTopoLoader_iface;
 785
 786     return S_OK;
 787 }