dlls/mfreadwrite/reader.c

   1 /*
   2  *
   3  * Copyright 2014 Austin English
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include <stdarg.h>
  21
  22 #define COBJMACROS
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "ole2.h"
  26 #include "rpcproxy.h"
  27
  28 #undef INITGUID
  29 #include <guiddef.h>
  30 #include "mfapi.h"
  31 #include "mfidl.h"
  32 #include "mfreadwrite.h"
  33 #include "d3d9.h"
  34 #include "initguid.h"
  35 #include "dxva2api.h"
  36
  37 #include "wine/debug.h"
  38 #include "wine/list.h"
  39
  40 #include "mf_private.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(mfplat);
  43
  44 struct stream_response
  45 {
  46     struct list entry;
  47     HRESULT status;
  48     DWORD stream_index;
  49     DWORD stream_flags;
  50     LONGLONG timestamp;
  51     IMFSample *sample;
  52 };
  53
  54 enum media_stream_state
  55 {
  56     STREAM_STATE_READY = 0,
  57     STREAM_STATE_EOS,
  58 };
  59
  60 enum media_source_state
  61 {
  62     SOURCE_STATE_STOPPED = 0,
  63     SOURCE_STATE_STARTED,
  64 };
  65
  66 enum media_stream_flags
  67 {
  68     STREAM_FLAG_SAMPLE_REQUESTED = 0x1, /* Protects from making multiple sample requests. */
  69     STREAM_FLAG_SELECTED = 0x2,         /* Mirrors descriptor, used to simplify tests when starting the source. */
  70     STREAM_FLAG_PRESENTED = 0x4,        /* Set if stream was selected last time Start() was called. */
  71     STREAM_FLAG_STOPPED = 0x8,          /* Received MEStreamStopped */
  72 };
  73
  74 struct stream_transform
  75 {
  76     IMFTransform *transform;
  77     unsigned int min_buffer_size;
  78 };
  79
  80 struct media_stream
  81 {
  82     IMFMediaStream *stream;
  83     IMFMediaType *current;
  84     struct stream_transform decoder;
  85     IMFVideoSampleAllocatorEx *allocator;
  86     DWORD id;
  87     unsigned int index;
  88     enum media_stream_state state;
  89     unsigned int flags;
  90     unsigned int requests;
  91     unsigned int responses;
  92     LONGLONG last_sample_ts;
  93     struct source_reader *reader;
  94 };
  95
  96 enum source_reader_async_op
  97 {
  98     SOURCE_READER_ASYNC_READ,
  99     SOURCE_READER_ASYNC_SEEK,
 100     SOURCE_READER_ASYNC_FLUSH,
 101     SOURCE_READER_ASYNC_SAMPLE_READY,
 102 };
 103
 104 struct source_reader_async_command
 105 {
 106     IUnknown IUnknown_iface;
 107     LONG refcount;
 108     enum source_reader_async_op op;
 109     union
 110     {
 111         struct
 112         {
 113             unsigned int flags;
 114             unsigned int stream_index;
 115         } read;
 116         struct
 117         {
 118             GUID format;
 119             PROPVARIANT position;
 120         } seek;
 121         struct
 122         {
 123             unsigned int stream_index;
 124         } flush;
 125         struct
 126         {
 127             unsigned int stream_index;
 128         } sample;
 129         struct
 130         {
 131             unsigned int stream_index;
 132         } sa;
 133     } u;
 134 };
 135
 136 enum source_reader_flags
 137 {
 138     SOURCE_READER_FLUSHING = 0x1,
 139     SOURCE_READER_SEEKING = 0x2,
 140     SOURCE_READER_SHUTDOWN_ON_RELEASE = 0x4,
 141     SOURCE_READER_D3D9_DEVICE_MANAGER = 0x8,
 142     SOURCE_READER_DXGI_DEVICE_MANAGER = 0x10,
 143     SOURCE_READER_HAS_DEVICE_MANAGER = SOURCE_READER_D3D9_DEVICE_MANAGER | SOURCE_READER_DXGI_DEVICE_MANAGER,
 144 };
 145
 146 struct source_reader
 147 {
 148     IMFSourceReader IMFSourceReader_iface;
 149     IMFAsyncCallback source_events_callback;
 150     IMFAsyncCallback stream_events_callback;
 151     IMFAsyncCallback async_commands_callback;
 152     LONG refcount;
 153     LONG public_refcount;
 154     IMFMediaSource *source;
 155     IMFPresentationDescriptor *descriptor;
 156     IMFSourceReaderCallback *async_callback;
 157     IMFAttributes *attributes;
 158     IUnknown *device_manager;
 159     unsigned int first_audio_stream_index;
 160     unsigned int first_video_stream_index;
 161     DWORD stream_count;
 162     unsigned int flags;
 163     DWORD queue;
 164     enum media_source_state source_state;
 165     struct media_stream *streams;
 166     struct list responses;
 167     CRITICAL_SECTION cs;
 168     CONDITION_VARIABLE sample_event;
 169     CONDITION_VARIABLE state_event;
 170     CONDITION_VARIABLE stop_event;
 171 };
 172
 173 static inline struct source_reader *impl_from_IMFSourceReader(IMFSourceReader *iface)
 174 {
 175     return CONTAINING_RECORD(iface, struct source_reader, IMFSourceReader_iface);
 176 }
 177
 178 static struct source_reader *impl_from_source_callback_IMFAsyncCallback(IMFAsyncCallback *iface)
 179 {
 180     return CONTAINING_RECORD(iface, struct source_reader, source_events_callback);
 181 }
 182
 183 static struct source_reader *impl_from_stream_callback_IMFAsyncCallback(IMFAsyncCallback *iface)
 184 {
 185     return CONTAINING_RECORD(iface, struct source_reader, stream_events_callback);
 186 }
 187
 188 static struct source_reader *impl_from_async_commands_callback_IMFAsyncCallback(IMFAsyncCallback *iface)
 189 {
 190     return CONTAINING_RECORD(iface, struct source_reader, async_commands_callback);
 191 }
 192
 193 static struct source_reader_async_command *impl_from_async_command_IUnknown(IUnknown *iface)
 194 {
 195     return CONTAINING_RECORD(iface, struct source_reader_async_command, IUnknown_iface);
 196 }
 197
 198 static void source_reader_release_responses(struct source_reader *reader, struct media_stream *stream);
 199
 200 static ULONG source_reader_addref(struct source_reader *reader)
 201 {
 202     return InterlockedIncrement(&reader->refcount);
 203 }
 204
 205 static ULONG source_reader_release(struct source_reader *reader)
 206 {
 207     ULONG refcount = InterlockedDecrement(&reader->refcount);
 208     unsigned int i;
 209
 210     if (!refcount)
 211     {
 212         if (reader->device_manager)
 213             IUnknown_Release(reader->device_manager);
 214         if (reader->async_callback)
 215             IMFSourceReaderCallback_Release(reader->async_callback);
 216         if (reader->descriptor)
 217             IMFPresentationDescriptor_Release(reader->descriptor);
 218         if (reader->attributes)
 219             IMFAttributes_Release(reader->attributes);
 220         IMFMediaSource_Release(reader->source);
 221
 222         for (i = 0; i < reader->stream_count; ++i)
 223         {
 224             struct media_stream *stream = &reader->streams[i];
 225
 226             if (stream->stream)
 227                 IMFMediaStream_Release(stream->stream);
 228             if (stream->current)
 229                 IMFMediaType_Release(stream->current);
 230             if (stream->decoder.transform)
 231                 IMFTransform_Release(stream->decoder.transform);
 232             if (stream->allocator)
 233                 IMFVideoSampleAllocatorEx_Release(stream->allocator);
 234         }
 235         source_reader_release_responses(reader, NULL);
 236         free(reader->streams);
 237         MFUnlockWorkQueue(reader->queue);
 238         DeleteCriticalSection(&reader->cs);
 239         free(reader);
 240     }
 241
 242     return refcount;
 243 }
 244
 245 static HRESULT WINAPI source_reader_async_command_QueryInterface(IUnknown *iface, REFIID riid, void **obj)
 246 {
 247     if (IsEqualIID(riid, &IID_IUnknown))
 248     {
 249         *obj = iface;
 250         IUnknown_AddRef(iface);
 251         return S_OK;
 252     }
 253
 254     WARN("Unsupported interface %s.\n", debugstr_guid(riid));
 255     *obj = NULL;
 256     return E_NOINTERFACE;
 257 }
 258
 259 static ULONG WINAPI source_reader_async_command_AddRef(IUnknown *iface)
 260 {
 261     struct source_reader_async_command *command = impl_from_async_command_IUnknown(iface);
 262     return InterlockedIncrement(&command->refcount);
 263 }
 264
 265 static ULONG WINAPI source_reader_async_command_Release(IUnknown *iface)
 266 {
 267     struct source_reader_async_command *command = impl_from_async_command_IUnknown(iface);
 268     ULONG refcount = InterlockedIncrement(&command->refcount);
 269
 270     if (!refcount)
 271     {
 272         if (command->op == SOURCE_READER_ASYNC_SEEK)
 273             PropVariantClear(&command->u.seek.position);
 274         free(command);
 275     }
 276
 277     return refcount;
 278 }
 279
 280 static const IUnknownVtbl source_reader_async_command_vtbl =
 281 {
 282     source_reader_async_command_QueryInterface,
 283     source_reader_async_command_AddRef,
 284     source_reader_async_command_Release,
 285 };
 286
 287 static HRESULT source_reader_create_async_op(enum source_reader_async_op op, struct source_reader_async_command **ret)
 288 {
 289     struct source_reader_async_command *command;
 290
 291     if (!(command = calloc(1, sizeof(*command))))
 292         return E_OUTOFMEMORY;
 293
 294     command->IUnknown_iface.lpVtbl = &source_reader_async_command_vtbl;
 295     command->op = op;
 296
 297     *ret = command;
 298
 299     return S_OK;
 300 }
 301
 302 static HRESULT media_event_get_object(IMFMediaEvent *event, REFIID riid, void **obj)
 303 {
 304     PROPVARIANT value;
 305     HRESULT hr;
 306
 307     PropVariantInit(&value);
 308     if (FAILED(hr = IMFMediaEvent_GetValue(event, &value)))
 309     {
 310         WARN("Failed to get event value, hr %#lx.\n", hr);
 311         return hr;
 312     }
 313
 314     if (value.vt != VT_UNKNOWN || !value.punkVal)
 315     {
 316         WARN("Unexpected value type %d.\n", value.vt);
 317         PropVariantClear(&value);
 318         return E_UNEXPECTED;
 319     }
 320
 321     hr = IUnknown_QueryInterface(value.punkVal, riid, obj);
 322     PropVariantClear(&value);
 323     if (FAILED(hr))
 324     {
 325         WARN("Unexpected object type.\n");
 326         return hr;
 327     }
 328
 329     return hr;
 330 }
 331
 332 static HRESULT media_stream_get_id(IMFMediaStream *stream, DWORD *id)
 333 {
 334     IMFStreamDescriptor *sd;
 335     HRESULT hr;
 336
 337     if (SUCCEEDED(hr = IMFMediaStream_GetStreamDescriptor(stream, &sd)))
 338     {
 339         hr = IMFStreamDescriptor_GetStreamIdentifier(sd, id);
 340         IMFStreamDescriptor_Release(sd);
 341     }
 342
 343     return hr;
 344 }
 345
 346 static HRESULT WINAPI source_reader_callback_QueryInterface(IMFAsyncCallback *iface,
 347         REFIID riid, void **obj)
 348 {
 349     TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), obj);
 350
 351     if (IsEqualIID(riid, &IID_IMFAsyncCallback) ||
 352             IsEqualIID(riid, &IID_IUnknown))
 353     {
 354         *obj = iface;
 355         IMFAsyncCallback_AddRef(iface);
 356         return S_OK;
 357     }
 358
 359     WARN("Unsupported %s.\n", debugstr_guid(riid));
 360     *obj = NULL;
 361     return E_NOINTERFACE;
 362 }
 363
 364 static ULONG WINAPI source_reader_source_events_callback_AddRef(IMFAsyncCallback *iface)
 365 {
 366     struct source_reader *reader = impl_from_source_callback_IMFAsyncCallback(iface);
 367     return source_reader_addref(reader);
 368 }
 369
 370 static ULONG WINAPI source_reader_source_events_callback_Release(IMFAsyncCallback *iface)
 371 {
 372     struct source_reader *reader = impl_from_source_callback_IMFAsyncCallback(iface);
 373     return source_reader_release(reader);
 374 }
 375
 376 static HRESULT WINAPI source_reader_callback_GetParameters(IMFAsyncCallback *iface,
 377         DWORD *flags, DWORD *queue)
 378 {
 379     return E_NOTIMPL;
 380 }
 381
 382 static void source_reader_response_ready(struct source_reader *reader, struct stream_response *response)
 383 {
 384     struct source_reader_async_command *command;
 385     struct media_stream *stream = &reader->streams[response->stream_index];
 386     HRESULT hr;
 387
 388     if (!stream->requests)
 389         return;
 390
 391     if (reader->async_callback)
 392     {
 393         if (SUCCEEDED(source_reader_create_async_op(SOURCE_READER_ASYNC_SAMPLE_READY, &command)))
 394         {
 395             command->u.sample.stream_index = stream->index;
 396             if (FAILED(hr = MFPutWorkItem(reader->queue, &reader->async_commands_callback, &command->IUnknown_iface)))
 397                 WARN("Failed to submit async result, hr %#lx.\n", hr);
 398             IUnknown_Release(&command->IUnknown_iface);
 399         }
 400     }
 401     else
 402         WakeAllConditionVariable(&reader->sample_event);
 403
 404     stream->requests--;
 405 }
 406
 407 static void source_reader_copy_sample_buffer(IMFSample *src, IMFSample *dst)
 408 {
 409     IMFMediaBuffer *buffer;
 410     LONGLONG time;
 411     DWORD flags;
 412     HRESULT hr;
 413
 414     IMFSample_CopyAllItems(src, (IMFAttributes *)dst);
 415
 416     IMFSample_SetSampleDuration(dst, 0);
 417     IMFSample_SetSampleTime(dst, 0);
 418     IMFSample_SetSampleFlags(dst, 0);
 419
 420     if (SUCCEEDED(IMFSample_GetSampleDuration(src, &time)))
 421         IMFSample_SetSampleDuration(dst, time);
 422
 423     if (SUCCEEDED(IMFSample_GetSampleTime(src, &time)))
 424         IMFSample_SetSampleTime(dst, time);
 425
 426     if (SUCCEEDED(IMFSample_GetSampleFlags(src, &flags)))
 427         IMFSample_SetSampleFlags(dst, flags);
 428
 429     if (SUCCEEDED(IMFSample_ConvertToContiguousBuffer(src, NULL)))
 430     {
 431         if (SUCCEEDED(IMFSample_GetBufferByIndex(dst, 0, &buffer)))
 432         {
 433             if (FAILED(hr = IMFSample_CopyToBuffer(src, buffer)))
 434                 WARN("Failed to copy a buffer, hr %#lx.\n", hr);
 435             IMFMediaBuffer_Release(buffer);
 436         }
 437     }
 438 }
 439
 440 static HRESULT source_reader_queue_response(struct source_reader *reader, struct media_stream *stream, HRESULT status,
 441         DWORD stream_flags, LONGLONG timestamp, IMFSample *sample)
 442 {
 443     struct stream_response *response;
 444
 445     if (!(response = calloc(1, sizeof(*response))))
 446         return E_OUTOFMEMORY;
 447
 448     response->status = status;
 449     response->stream_index = stream->index;
 450     response->stream_flags = stream_flags;
 451     response->timestamp = timestamp;
 452     response->sample = sample;
 453     if (response->sample)
 454         IMFSample_AddRef(response->sample);
 455
 456     list_add_tail(&reader->responses, &response->entry);
 457     stream->responses++;
 458
 459     source_reader_response_ready(reader, response);
 460
 461     stream->last_sample_ts = timestamp;
 462
 463     return S_OK;
 464 }
 465
 466 static HRESULT source_reader_request_sample(struct source_reader *reader, struct media_stream *stream)
 467 {
 468     HRESULT hr = S_OK;
 469
 470     if (stream->stream && !(stream->flags & STREAM_FLAG_SAMPLE_REQUESTED))
 471     {
 472         if (FAILED(hr = IMFMediaStream_RequestSample(stream->stream, NULL)))
 473             WARN("Sample request failed, hr %#lx.\n", hr);
 474         else
 475         {
 476             stream->flags |= STREAM_FLAG_SAMPLE_REQUESTED;
 477         }
 478     }
 479
 480     return hr;
 481 }
 482
 483 static HRESULT source_reader_new_stream_handler(struct source_reader *reader, IMFMediaEvent *event)
 484 {
 485     IMFMediaStream *stream;
 486     unsigned int i;
 487     DWORD id = 0;
 488     HRESULT hr;
 489
 490     if (FAILED(hr = media_event_get_object(event, &IID_IMFMediaStream, (void **)&stream)))
 491     {
 492         WARN("Failed to get stream object, hr %#lx.\n", hr);
 493         return hr;
 494     }
 495
 496     TRACE("Got new stream %p.\n", stream);
 497
 498     if (FAILED(hr = media_stream_get_id(stream, &id)))
 499     {
 500         WARN("Unidentified stream %p, hr %#lx.\n", stream, hr);
 501         IMFMediaStream_Release(stream);
 502         return hr;
 503     }
 504
 505     EnterCriticalSection(&reader->cs);
 506
 507     for (i = 0; i < reader->stream_count; ++i)
 508     {
 509         if (id == reader->streams[i].id)
 510         {
 511             if (!reader->streams[i].stream)
 512             {
 513                 reader->streams[i].stream = stream;
 514                 IMFMediaStream_AddRef(reader->streams[i].stream);
 515                 if (FAILED(hr = IMFMediaStream_BeginGetEvent(stream, &reader->stream_events_callback,
 516                         (IUnknown *)stream)))
 517                 {
 518                     WARN("Failed to subscribe to stream events, hr %#lx.\n", hr);
 519                 }
 520
 521                 if (reader->streams[i].requests)
 522                     if (FAILED(source_reader_request_sample(reader, &reader->streams[i])))
 523                         WakeAllConditionVariable(&reader->sample_event);
 524             }
 525             break;
 526         }
 527     }
 528
 529     if (i == reader->stream_count)
 530         WARN("Stream with id %#lx was not present in presentation descriptor.\n", id);
 531
 532     LeaveCriticalSection(&reader->cs);
 533
 534     IMFMediaStream_Release(stream);
 535
 536     return hr;
 537 }
 538
 539 static HRESULT source_reader_source_state_handler(struct source_reader *reader, MediaEventType event_type)
 540 {
 541     EnterCriticalSection(&reader->cs);
 542
 543     switch (event_type)
 544     {
 545         case MESourceStarted:
 546             reader->source_state = SOURCE_STATE_STARTED;
 547             reader->flags &= ~SOURCE_READER_SEEKING;
 548             break;
 549         case MESourceStopped:
 550             reader->source_state = SOURCE_STATE_STOPPED;
 551             reader->flags &= ~SOURCE_READER_SEEKING;
 552             break;
 553         case MESourceSeeked:
 554             reader->flags &= ~SOURCE_READER_SEEKING;
 555             break;
 556         default:
 557             WARN("Unhandled event %ld.\n", event_type);
 558     }
 559
 560     LeaveCriticalSection(&reader->cs);
 561
 562     WakeAllConditionVariable(&reader->state_event);
 563     if (event_type == MESourceStopped)
 564         WakeAllConditionVariable(&reader->stop_event);
 565
 566     return S_OK;
 567 }
 568
 569 static HRESULT WINAPI source_reader_source_events_callback_Invoke(IMFAsyncCallback *iface, IMFAsyncResult *result)
 570 {
 571     struct source_reader *reader = impl_from_source_callback_IMFAsyncCallback(iface);
 572     MediaEventType event_type;
 573     IMFMediaSource *source;
 574     IMFMediaEvent *event;
 575     HRESULT hr;
 576
 577     TRACE("%p, %p.\n", iface, result);
 578
 579     source = (IMFMediaSource *)IMFAsyncResult_GetStateNoAddRef(result);
 580
 581     if (FAILED(hr = IMFMediaSource_EndGetEvent(source, result, &event)))
 582         return hr;
 583
 584     IMFMediaEvent_GetType(event, &event_type);
 585
 586     TRACE("Got event %lu.\n", event_type);
 587
 588     switch (event_type)
 589     {
 590         case MENewStream:
 591             hr = source_reader_new_stream_handler(reader, event);
 592             break;
 593         case MESourceStarted:
 594         case MESourcePaused:
 595         case MESourceStopped:
 596         case MESourceSeeked:
 597             hr = source_reader_source_state_handler(reader, event_type);
 598             break;
 599         case MEBufferingStarted:
 600         case MEBufferingStopped:
 601         case MEConnectStart:
 602         case MEConnectEnd:
 603         case MEExtendedType:
 604         case MESourceCharacteristicsChanged:
 605         case MESourceMetadataChanged:
 606         case MEContentProtectionMetadata:
 607         case MEDeviceThermalStateChanged:
 608             if (reader->async_callback)
 609                 IMFSourceReaderCallback_OnEvent(reader->async_callback, MF_SOURCE_READER_MEDIASOURCE, event);
 610             break;
 611         default:
 612             ;
 613     }
 614
 615     if (FAILED(hr))
 616         WARN("Failed while handling %ld event, hr %#lx.\n", event_type, hr);
 617
 618     IMFMediaEvent_Release(event);
 619
 620     if (event_type != MESourceStopped)
 621         IMFMediaSource_BeginGetEvent(source, iface, (IUnknown *)source);
 622
 623     return S_OK;
 624 }
 625
 626 static const IMFAsyncCallbackVtbl source_events_callback_vtbl =
 627 {
 628     source_reader_callback_QueryInterface,
 629     source_reader_source_events_callback_AddRef,
 630     source_reader_source_events_callback_Release,
 631     source_reader_callback_GetParameters,
 632     source_reader_source_events_callback_Invoke,
 633 };
 634
 635 static ULONG WINAPI source_reader_stream_events_callback_AddRef(IMFAsyncCallback *iface)
 636 {
 637     struct source_reader *reader = impl_from_stream_callback_IMFAsyncCallback(iface);
 638     return source_reader_addref(reader);
 639 }
 640
 641 static ULONG WINAPI source_reader_stream_events_callback_Release(IMFAsyncCallback *iface)
 642 {
 643     struct source_reader *reader = impl_from_stream_callback_IMFAsyncCallback(iface);
 644     return source_reader_release(reader);
 645 }
 646
 647 static HRESULT source_reader_pull_stream_samples(struct source_reader *reader, struct media_stream *stream)
 648 {
 649     MFT_OUTPUT_STREAM_INFO stream_info = { 0 };
 650     MFT_OUTPUT_DATA_BUFFER out_buffer;
 651     unsigned int buffer_size;
 652     IMFMediaBuffer *buffer;
 653     LONGLONG timestamp;
 654     DWORD status;
 655     HRESULT hr;
 656
 657     if (FAILED(hr = IMFTransform_GetOutputStreamInfo(stream->decoder.transform, 0, &stream_info)))
 658     {
 659         WARN("Failed to get output stream info, hr %#lx.\n", hr);
 660         return hr;
 661     }
 662
 663     for (;;)
 664     {
 665         memset(&out_buffer, 0, sizeof(out_buffer));
 666
 667         if (!(stream_info.dwFlags & (MFT_OUTPUT_STREAM_PROVIDES_SAMPLES | MFT_OUTPUT_STREAM_CAN_PROVIDE_SAMPLES)))
 668         {
 669             if (FAILED(hr = MFCreateSample(&out_buffer.pSample)))
 670                 break;
 671
 672             buffer_size = max(stream_info.cbSize, stream->decoder.min_buffer_size);
 673
 674             if (FAILED(hr = MFCreateAlignedMemoryBuffer(buffer_size, stream_info.cbAlignment, &buffer)))
 675             {
 676                 IMFSample_Release(out_buffer.pSample);
 677                 break;
 678             }
 679
 680             IMFSample_AddBuffer(out_buffer.pSample, buffer);
 681             IMFMediaBuffer_Release(buffer);
 682         }
 683
 684         if (FAILED(hr = IMFTransform_ProcessOutput(stream->decoder.transform, 0, 1, &out_buffer, &status)))
 685         {
 686             if (out_buffer.pSample)
 687                 IMFSample_Release(out_buffer.pSample);
 688             break;
 689         }
 690
 691         timestamp = 0;
 692         if (FAILED(IMFSample_GetSampleTime(out_buffer.pSample, &timestamp)))
 693             WARN("Sample time wasn't set.\n");
 694
 695         source_reader_queue_response(reader, stream, S_OK /* FIXME */, 0, timestamp, out_buffer.pSample);
 696         if (out_buffer.pSample)
 697             IMFSample_Release(out_buffer.pSample);
 698         if (out_buffer.pEvents)
 699             IMFCollection_Release(out_buffer.pEvents);
 700     }
 701
 702     return hr;
 703 }
 704
 705 static HRESULT source_reader_process_sample(struct source_reader *reader, struct media_stream *stream,
 706         IMFSample *sample)
 707 {
 708     LONGLONG timestamp;
 709     HRESULT hr;
 710
 711     if (!stream->decoder.transform)
 712     {
 713         timestamp = 0;
 714         if (FAILED(IMFSample_GetSampleTime(sample, &timestamp)))
 715             WARN("Sample time wasn't set.\n");
 716
 717         return source_reader_queue_response(reader, stream, S_OK, 0, timestamp, sample);
 718     }
 719
 720     /* It's assumed that decoder has 1 input and 1 output, both id's are 0. */
 721
 722     hr = source_reader_pull_stream_samples(reader, stream);
 723     if (hr == MF_E_TRANSFORM_NEED_MORE_INPUT)
 724     {
 725         if (FAILED(hr = IMFTransform_ProcessInput(stream->decoder.transform, 0, sample, 0)))
 726         {
 727             WARN("Transform failed to process input, hr %#lx.\n", hr);
 728             return hr;
 729         }
 730
 731         if ((hr = source_reader_pull_stream_samples(reader, stream)) == MF_E_TRANSFORM_NEED_MORE_INPUT)
 732             return S_OK;
 733     }
 734     else
 735         WARN("Transform failed to process output, hr %#lx.\n", hr);
 736
 737     return hr;
 738 }
 739
 740 static HRESULT source_reader_media_sample_handler(struct source_reader *reader, IMFMediaStream *stream,
 741         IMFMediaEvent *event)
 742 {
 743     IMFSample *sample;
 744     unsigned int i;
 745     DWORD id = 0;
 746     HRESULT hr;
 747
 748     TRACE("Got new sample for stream %p.\n", stream);
 749
 750     if (FAILED(hr = media_event_get_object(event, &IID_IMFSample, (void **)&sample)))
 751     {
 752         WARN("Failed to get sample object, hr %#lx.\n", hr);
 753         return hr;
 754     }
 755
 756     if (FAILED(hr = media_stream_get_id(stream, &id)))
 757     {
 758         WARN("Unidentified stream %p, hr %#lx.\n", stream, hr);
 759         IMFSample_Release(sample);
 760         return hr;
 761     }
 762
 763     EnterCriticalSection(&reader->cs);
 764
 765     for (i = 0; i < reader->stream_count; ++i)
 766     {
 767         if (id == reader->streams[i].id)
 768         {
 769             /* FIXME: propagate processing errors? */
 770
 771             reader->streams[i].flags &= ~STREAM_FLAG_SAMPLE_REQUESTED;
 772             hr = source_reader_process_sample(reader, &reader->streams[i], sample);
 773             if (reader->streams[i].requests)
 774                 source_reader_request_sample(reader, &reader->streams[i]);
 775
 776             break;
 777         }
 778     }
 779
 780     if (i == reader->stream_count)
 781         WARN("Stream with id %#lx was not present in presentation descriptor.\n", id);
 782
 783     LeaveCriticalSection(&reader->cs);
 784
 785     IMFSample_Release(sample);
 786
 787     return hr;
 788 }
 789
 790 static HRESULT source_reader_media_stream_state_handler(struct source_reader *reader, IMFMediaStream *stream,
 791         IMFMediaEvent *event)
 792 {
 793     MediaEventType event_type;
 794     LONGLONG timestamp;
 795     PROPVARIANT value;
 796     unsigned int i;
 797     HRESULT hr;
 798     DWORD id;
 799
 800     IMFMediaEvent_GetType(event, &event_type);
 801
 802     if (FAILED(hr = media_stream_get_id(stream, &id)))
 803     {
 804         WARN("Unidentified stream %p, hr %#lx.\n", stream, hr);
 805         return hr;
 806     }
 807
 808     EnterCriticalSection(&reader->cs);
 809
 810     for (i = 0; i < reader->stream_count; ++i)
 811     {
 812         struct media_stream *stream = &reader->streams[i];
 813
 814         if (id == stream->id)
 815         {
 816             switch (event_type)
 817             {
 818                 case MEEndOfStream:
 819                     stream->state = STREAM_STATE_EOS;
 820                     stream->flags &= ~STREAM_FLAG_SAMPLE_REQUESTED;
 821
 822                     if (stream->decoder.transform && SUCCEEDED(IMFTransform_ProcessMessage(stream->decoder.transform,
 823                             MFT_MESSAGE_COMMAND_DRAIN, 0)))
 824                     {
 825                         if ((hr = source_reader_pull_stream_samples(reader, stream)) != MF_E_TRANSFORM_NEED_MORE_INPUT)
 826                             WARN("Failed to pull pending samples, hr %#lx.\n", hr);
 827                     }
 828
 829                     while (stream->requests)
 830                         source_reader_queue_response(reader, stream, S_OK, MF_SOURCE_READERF_ENDOFSTREAM, 0, NULL);
 831
 832                     break;
 833                 case MEStreamSeeked:
 834                 case MEStreamStarted:
 835                     stream->state = STREAM_STATE_READY;
 836                     break;
 837                 case MEStreamStopped:
 838                     stream->flags |= STREAM_FLAG_STOPPED;
 839                     break;
 840                 case MEStreamTick:
 841                     value.vt = VT_EMPTY;
 842                     hr = SUCCEEDED(IMFMediaEvent_GetValue(event, &value)) && value.vt == VT_I8 ? S_OK : E_UNEXPECTED;
 843                     timestamp = SUCCEEDED(hr) ? value.hVal.QuadPart : 0;
 844                     PropVariantClear(&value);
 845
 846                     source_reader_queue_response(reader, stream, hr, MF_SOURCE_READERF_STREAMTICK, timestamp, NULL);
 847
 848                     break;
 849                 default:
 850                     ;
 851             }
 852
 853             break;
 854         }
 855     }
 856
 857     LeaveCriticalSection(&reader->cs);
 858
 859     if (event_type == MEStreamStopped)
 860         WakeAllConditionVariable(&reader->stop_event);
 861
 862     return S_OK;
 863 }
 864
 865 static HRESULT WINAPI source_reader_stream_events_callback_Invoke(IMFAsyncCallback *iface, IMFAsyncResult *result)
 866 {
 867     struct source_reader *reader = impl_from_stream_callback_IMFAsyncCallback(iface);
 868     MediaEventType event_type;
 869     IMFMediaStream *stream;
 870     IMFMediaEvent *event;
 871     HRESULT hr;
 872
 873     TRACE("%p, %p.\n", iface, result);
 874
 875     stream = (IMFMediaStream *)IMFAsyncResult_GetStateNoAddRef(result);
 876
 877     if (FAILED(hr = IMFMediaStream_EndGetEvent(stream, result, &event)))
 878         return hr;
 879
 880     IMFMediaEvent_GetType(event, &event_type);
 881
 882     TRACE("Got event %lu.\n", event_type);
 883
 884     switch (event_type)
 885     {
 886         case MEMediaSample:
 887             hr = source_reader_media_sample_handler(reader, stream, event);
 888             break;
 889         case MEStreamSeeked:
 890         case MEStreamStarted:
 891         case MEStreamStopped:
 892         case MEStreamTick:
 893         case MEEndOfStream:
 894             hr = source_reader_media_stream_state_handler(reader, stream, event);
 895             break;
 896         default:
 897             ;
 898     }
 899
 900     if (FAILED(hr))
 901         WARN("Failed while handling %ld event, hr %#lx.\n", event_type, hr);
 902
 903     IMFMediaEvent_Release(event);
 904
 905     if (event_type != MEStreamStopped)
 906         IMFMediaStream_BeginGetEvent(stream, iface, (IUnknown *)stream);
 907
 908     return S_OK;
 909 }
 910
 911 static const IMFAsyncCallbackVtbl stream_events_callback_vtbl =
 912 {
 913     source_reader_callback_QueryInterface,
 914     source_reader_stream_events_callback_AddRef,
 915     source_reader_stream_events_callback_Release,
 916     source_reader_callback_GetParameters,
 917     source_reader_stream_events_callback_Invoke,
 918 };
 919
 920 static ULONG WINAPI source_reader_async_commands_callback_AddRef(IMFAsyncCallback *iface)
 921 {
 922     struct source_reader *reader = impl_from_async_commands_callback_IMFAsyncCallback(iface);
 923     return source_reader_addref(reader);
 924 }
 925
 926 static ULONG WINAPI source_reader_async_commands_callback_Release(IMFAsyncCallback *iface)
 927 {
 928     struct source_reader *reader = impl_from_async_commands_callback_IMFAsyncCallback(iface);
 929     return source_reader_release(reader);
 930 }
 931
 932 static struct stream_response * media_stream_detach_response(struct source_reader *reader, struct stream_response *response)
 933 {
 934     struct media_stream *stream;
 935
 936     list_remove(&response->entry);
 937
 938     if (response->stream_index < reader->stream_count)
 939     {
 940         stream = &reader->streams[response->stream_index];
 941         if (stream->responses)
 942             --stream->responses;
 943     }
 944
 945     return response;
 946 }
 947
 948 static struct stream_response *media_stream_pop_response(struct source_reader *reader, struct media_stream *stream)
 949 {
 950     struct stream_response *response;
 951     IMFSample *sample;
 952     HRESULT hr;
 953
 954     LIST_FOR_EACH_ENTRY(response, &reader->responses, struct stream_response, entry)
 955     {
 956         if (stream && response->stream_index != stream->index)
 957             continue;
 958
 959         if (!stream) stream = &reader->streams[response->stream_index];
 960
 961         if (response->sample && stream->allocator)
 962         {
 963             /* Return allocation error to the caller, while keeping original response sample in for later. */
 964             if (SUCCEEDED(hr = IMFVideoSampleAllocatorEx_AllocateSample(stream->allocator, &sample)))
 965             {
 966                 source_reader_copy_sample_buffer(response->sample, sample);
 967                 IMFSample_Release(response->sample);
 968                 response->sample = sample;
 969             }
 970             else
 971             {
 972                 if (!(response = calloc(1, sizeof(*response))))
 973                     return NULL;
 974
 975                 response->status = hr;
 976                 response->stream_flags = MF_SOURCE_READERF_ERROR;
 977                 return response;
 978             }
 979         }
 980
 981         return media_stream_detach_response(reader, response);
 982     }
 983
 984     return NULL;
 985 }
 986
 987 static void source_reader_release_response(struct stream_response *response)
 988 {
 989     if (response->sample)
 990         IMFSample_Release(response->sample);
 991     free(response);
 992 }
 993
 994 static HRESULT source_reader_get_stream_selection(const struct source_reader *reader, DWORD index, BOOL *selected)
 995 {
 996     IMFStreamDescriptor *sd;
 997
 998     if (FAILED(IMFPresentationDescriptor_GetStreamDescriptorByIndex(reader->descriptor, index, selected, &sd)))
 999         return MF_E_INVALIDSTREAMNUMBER;
1000     IMFStreamDescriptor_Release(sd);
1001
1002     return S_OK;
1003 }
1004
1005 static HRESULT source_reader_start_source(struct source_reader *reader)
1006 {
1007     BOOL selected, selection_changed = FALSE;
1008     PROPVARIANT position;
1009     HRESULT hr = S_OK;
1010     unsigned int i;
1011
1012     for (i = 0; i < reader->stream_count; ++i)
1013     {
1014         source_reader_get_stream_selection(reader, i, &selected);
1015         if (selected)
1016             reader->streams[i].flags |= STREAM_FLAG_SELECTED;
1017         else
1018             reader->streams[i].flags &= ~STREAM_FLAG_SELECTED;
1019     }
1020
1021     if (reader->source_state == SOURCE_STATE_STARTED)
1022     {
1023         for (i = 0; i < reader->stream_count; ++i)
1024         {
1025             selection_changed = !!(reader->streams[i].flags & STREAM_FLAG_SELECTED) ^
1026                     !!(reader->streams[i].flags & STREAM_FLAG_PRESENTED);
1027             if (selection_changed)
1028                 break;
1029         }
1030     }
1031
1032     position.hVal.QuadPart = 0;
1033     if (reader->source_state != SOURCE_STATE_STARTED || selection_changed)
1034     {
1035         position.vt = reader->source_state == SOURCE_STATE_STARTED ? VT_EMPTY : VT_I8;
1036
1037         /* Update cached stream selection if descriptor was accepted. */
1038         if (SUCCEEDED(hr = IMFMediaSource_Start(reader->source, reader->descriptor, &GUID_NULL, &position)))
1039         {
1040             for (i = 0; i < reader->stream_count; ++i)
1041             {
1042                 if (reader->streams[i].flags & STREAM_FLAG_SELECTED)
1043                     reader->streams[i].flags |= STREAM_FLAG_PRESENTED;
1044             }
1045         }
1046     }
1047
1048     return hr;
1049 }
1050
1051 static BOOL source_reader_got_response_for_stream(struct source_reader *reader, struct media_stream *stream)
1052 {
1053     struct stream_response *response;
1054
1055     LIST_FOR_EACH_ENTRY(response, &reader->responses, struct stream_response, entry)
1056     {
1057         if (response->stream_index == stream->index)
1058             return TRUE;
1059     }
1060
1061     return FALSE;
1062 }
1063
1064 static BOOL source_reader_get_read_result(struct source_reader *reader, struct media_stream *stream, DWORD flags,
1065         HRESULT *status, DWORD *stream_index, DWORD *stream_flags, LONGLONG *timestamp, IMFSample **sample)
1066 {
1067     struct stream_response *response = NULL;
1068     BOOL request_sample = FALSE;
1069
1070     if ((response = media_stream_pop_response(reader, stream)))
1071     {
1072         *status = response->status;
1073         *stream_index = stream->index;
1074         *stream_flags = response->stream_flags;
1075         *timestamp = response->timestamp;
1076         *sample = response->sample;
1077         if (*sample)
1078             IMFSample_AddRef(*sample);
1079
1080         source_reader_release_response(response);
1081     }
1082     else
1083     {
1084         *status = S_OK;
1085         *stream_index = stream->index;
1086         *timestamp = 0;
1087         *sample = NULL;
1088
1089         if (stream->state == STREAM_STATE_EOS)
1090         {
1091             *stream_flags = MF_SOURCE_READERF_ENDOFSTREAM;
1092         }
1093         else
1094         {
1095             request_sample = !(flags & MF_SOURCE_READER_CONTROLF_DRAIN);
1096             *stream_flags = 0;
1097         }
1098     }
1099
1100     return !request_sample;
1101 }
1102
1103 static HRESULT source_reader_get_next_selected_stream(struct source_reader *reader, DWORD *stream_index)
1104 {
1105     unsigned int i, first_selected = ~0u;
1106     BOOL selected, stream_drained;
1107     LONGLONG min_ts = MAXLONGLONG;
1108
1109     for (i = 0; i < reader->stream_count; ++i)
1110     {
1111         stream_drained = reader->streams[i].state == STREAM_STATE_EOS && !reader->streams[i].responses;
1112         selected = SUCCEEDED(source_reader_get_stream_selection(reader, i, &selected)) && selected;
1113
1114         if (selected)
1115         {
1116             if (first_selected == ~0u)
1117                 first_selected = i;
1118
1119             /* Pick the stream whose last sample had the lowest timestamp. */
1120             if (!stream_drained && reader->streams[i].last_sample_ts < min_ts)
1121             {
1122                 min_ts = reader->streams[i].last_sample_ts;
1123                 *stream_index = i;
1124             }
1125         }
1126     }
1127
1128     /* If all selected streams reached EOS, use first selected. */
1129     if (first_selected != ~0u)
1130     {
1131         if (min_ts == MAXLONGLONG)
1132             *stream_index = first_selected;
1133     }
1134
1135     return first_selected == ~0u ? MF_E_MEDIA_SOURCE_NO_STREAMS_SELECTED : S_OK;
1136 }
1137
1138 static HRESULT source_reader_get_stream_read_index(struct source_reader *reader, unsigned int index, DWORD *stream_index)
1139 {
1140     BOOL selected;
1141     HRESULT hr;
1142
1143     switch (index)
1144     {
1145         case MF_SOURCE_READER_FIRST_VIDEO_STREAM:
1146             *stream_index = reader->first_video_stream_index;
1147             break;
1148         case MF_SOURCE_READER_FIRST_AUDIO_STREAM:
1149             *stream_index = reader->first_audio_stream_index;
1150             break;
1151         case MF_SOURCE_READER_ANY_STREAM:
1152             return source_reader_get_next_selected_stream(reader, stream_index);
1153         default:
1154             *stream_index = index;
1155     }
1156
1157     /* Can't read from deselected streams. */
1158     if (SUCCEEDED(hr = source_reader_get_stream_selection(reader, *stream_index, &selected)) && !selected)
1159         hr = MF_E_INVALIDREQUEST;
1160
1161     return hr;
1162 }
1163
1164 static void source_reader_release_responses(struct source_reader *reader, struct media_stream *stream)
1165 {
1166     struct stream_response *ptr, *next;
1167
1168     LIST_FOR_EACH_ENTRY_SAFE(ptr, next, &reader->responses, struct stream_response, entry)
1169     {
1170         if (stream && stream->index != ptr->stream_index &&
1171                 ptr->stream_index != MF_SOURCE_READER_FIRST_VIDEO_STREAM &&
1172                 ptr->stream_index != MF_SOURCE_READER_FIRST_AUDIO_STREAM &&
1173                 ptr->stream_index != MF_SOURCE_READER_ANY_STREAM)
1174         {
1175             continue;
1176         }
1177         media_stream_detach_response(reader, ptr);
1178         source_reader_release_response(ptr);
1179     }
1180 }
1181
1182 static void source_reader_flush_stream(struct source_reader *reader, DWORD stream_index)
1183 {
1184     struct media_stream *stream = &reader->streams[stream_index];
1185
1186     source_reader_release_responses(reader, stream);
1187     if (stream->decoder.transform)
1188         IMFTransform_ProcessMessage(stream->decoder.transform, MFT_MESSAGE_COMMAND_FLUSH, 0);
1189     stream->requests = 0;
1190 }
1191
1192 static HRESULT source_reader_flush(struct source_reader *reader, unsigned int index)
1193 {
1194     unsigned int stream_index;
1195     HRESULT hr = S_OK;
1196
1197     if (index == MF_SOURCE_READER_ALL_STREAMS)
1198     {
1199         for (stream_index = 0; stream_index < reader->stream_count; ++stream_index)
1200             source_reader_flush_stream(reader, stream_index);
1201     }
1202     else
1203     {
1204         switch (index)
1205         {
1206             case MF_SOURCE_READER_FIRST_VIDEO_STREAM:
1207                 stream_index = reader->first_video_stream_index;
1208                 break;
1209             case MF_SOURCE_READER_FIRST_AUDIO_STREAM:
1210                 stream_index = reader->first_audio_stream_index;
1211                 break;
1212             default:
1213                 stream_index = index;
1214         }
1215
1216         if (stream_index < reader->stream_count)
1217             source_reader_flush_stream(reader, stream_index);
1218         else
1219             hr = MF_E_INVALIDSTREAMNUMBER;
1220     }
1221
1222     return hr;
1223 }
1224
1225 static HRESULT WINAPI source_reader_async_commands_callback_Invoke(IMFAsyncCallback *iface, IMFAsyncResult *result)
1226 {
1227     struct source_reader *reader = impl_from_async_commands_callback_IMFAsyncCallback(iface);
1228     struct media_stream *stream, stub_stream = { .requests = 1 };
1229     struct source_reader_async_command *command;
1230     struct stream_response *response;
1231     DWORD stream_index, stream_flags;
1232     BOOL report_sample = FALSE;
1233     IMFSample *sample = NULL;
1234     LONGLONG timestamp = 0;
1235     HRESULT hr, status;
1236     IUnknown *state;
1237
1238     if (FAILED(hr = IMFAsyncResult_GetState(result, &state)))
1239         return hr;
1240
1241     command = impl_from_async_command_IUnknown(state);
1242
1243     switch (command->op)
1244     {
1245         case SOURCE_READER_ASYNC_READ:
1246             EnterCriticalSection(&reader->cs);
1247
1248             if (SUCCEEDED(hr = source_reader_start_source(reader)))
1249             {
1250                 if (SUCCEEDED(hr = source_reader_get_stream_read_index(reader, command->u.read.stream_index, &stream_index)))
1251                 {
1252                     stream = &reader->streams[stream_index];
1253
1254                     if (!(report_sample = source_reader_get_read_result(reader, stream, command->u.read.flags, &status,
1255                             &stream_index, &stream_flags, &timestamp, &sample)))
1256                     {
1257                         stream->requests++;
1258                         source_reader_request_sample(reader, stream);
1259                         /* FIXME: set error stream/reader state on request failure */
1260                     }
1261                 }
1262                 else
1263                 {
1264                     stub_stream.index = command->u.read.stream_index;
1265                     source_reader_queue_response(reader, &stub_stream, hr, MF_SOURCE_READERF_ERROR, 0, NULL);
1266                 }
1267             }
1268
1269             LeaveCriticalSection(&reader->cs);
1270
1271             if (report_sample)
1272                 IMFSourceReaderCallback_OnReadSample(reader->async_callback, status, stream_index, stream_flags,
1273                         timestamp, sample);
1274
1275             if (sample)
1276                 IMFSample_Release(sample);
1277
1278             break;
1279
1280         case SOURCE_READER_ASYNC_SEEK:
1281
1282             EnterCriticalSection(&reader->cs);
1283             if (SUCCEEDED(IMFMediaSource_Start(reader->source, reader->descriptor, &command->u.seek.format,
1284                     &command->u.seek.position)))
1285             {
1286                 reader->flags |= SOURCE_READER_SEEKING;
1287             }
1288             LeaveCriticalSection(&reader->cs);
1289
1290             break;
1291
1292         case SOURCE_READER_ASYNC_SAMPLE_READY:
1293
1294             EnterCriticalSection(&reader->cs);
1295             response = media_stream_pop_response(reader, NULL);
1296             LeaveCriticalSection(&reader->cs);
1297
1298             if (response)
1299             {
1300                 IMFSourceReaderCallback_OnReadSample(reader->async_callback, response->status, response->stream_index,
1301                         response->stream_flags, response->timestamp, response->sample);
1302                 source_reader_release_response(response);
1303             }
1304
1305             break;
1306         case SOURCE_READER_ASYNC_FLUSH:
1307             EnterCriticalSection(&reader->cs);
1308             source_reader_flush(reader, command->u.flush.stream_index);
1309             reader->flags &= ~SOURCE_READER_FLUSHING;
1310             LeaveCriticalSection(&reader->cs);
1311
1312             IMFSourceReaderCallback_OnFlush(reader->async_callback, command->u.flush.stream_index);
1313             break;
1314         default:
1315             ;
1316     }
1317
1318     IUnknown_Release(state);
1319
1320     return S_OK;
1321 }
1322
1323 static const IMFAsyncCallbackVtbl async_commands_callback_vtbl =
1324 {
1325     source_reader_callback_QueryInterface,
1326     source_reader_async_commands_callback_AddRef,
1327     source_reader_async_commands_callback_Release,
1328     source_reader_callback_GetParameters,
1329     source_reader_async_commands_callback_Invoke,
1330 };
1331
1332 static HRESULT WINAPI src_reader_QueryInterface(IMFSourceReader *iface, REFIID riid, void **out)
1333 {
1334     struct source_reader *reader = impl_from_IMFSourceReader(iface);
1335
1336     TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), out);
1337
1338     if(IsEqualGUID(riid, &IID_IUnknown) ||
1339        IsEqualGUID(riid, &IID_IMFSourceReader))
1340     {
1341         *out = &reader->IMFSourceReader_iface;
1342     }
1343     else
1344     {
1345         FIXME("(%s, %p)\n", debugstr_guid(riid), out);
1346         *out = NULL;
1347         return E_NOINTERFACE;
1348     }
1349
1350     IUnknown_AddRef((IUnknown*)*out);
1351     return S_OK;
1352 }
1353
1354 static ULONG WINAPI src_reader_AddRef(IMFSourceReader *iface)
1355 {
1356     struct source_reader *reader = impl_from_IMFSourceReader(iface);
1357     ULONG refcount = InterlockedIncrement(&reader->public_refcount);
1358
1359     TRACE("%p, refcount %lu.\n", iface, refcount);
1360
1361     return refcount;
1362 }
1363
1364 static BOOL source_reader_is_source_stopped(const struct source_reader *reader)
1365 {
1366     unsigned int i;
1367
1368     if (reader->source_state != SOURCE_STATE_STOPPED)
1369         return FALSE;
1370
1371     for (i = 0; i < reader->stream_count; ++i)
1372     {
1373         if (reader->streams[i].stream && !(reader->streams[i].flags & STREAM_FLAG_STOPPED))
1374             return FALSE;
1375     }
1376
1377     return TRUE;
1378 }
1379
1380 static ULONG WINAPI src_reader_Release(IMFSourceReader *iface)
1381 {
1382     struct source_reader *reader = impl_from_IMFSourceReader(iface);
1383     ULONG refcount = InterlockedDecrement(&reader->public_refcount);
1384     unsigned int i;
1385
1386     TRACE("%p, refcount %lu.\n", iface, refcount);
1387
1388     if (!refcount)
1389     {
1390         if (reader->flags & SOURCE_READER_SHUTDOWN_ON_RELEASE)
1391             IMFMediaSource_Shutdown(reader->source);
1392         else if (SUCCEEDED(IMFMediaSource_Stop(reader->source)))
1393         {
1394             EnterCriticalSection(&reader->cs);
1395
1396             while (!source_reader_is_source_stopped(reader))
1397             {
1398                 SleepConditionVariableCS(&reader->stop_event, &reader->cs, INFINITE);
1399             }
1400
1401             LeaveCriticalSection(&reader->cs);
1402         }
1403
1404         for (i = 0; i < reader->stream_count; ++i)
1405         {
1406             struct media_stream *stream = &reader->streams[i];
1407             IMFVideoSampleAllocatorCallback *callback;
1408
1409             if (!stream->allocator)
1410                 continue;
1411
1412             if (SUCCEEDED(IMFVideoSampleAllocatorEx_QueryInterface(stream->allocator, &IID_IMFVideoSampleAllocatorCallback,
1413                     (void **)&callback)))
1414             {
1415                 IMFVideoSampleAllocatorCallback_SetCallback(callback, NULL);
1416                 IMFVideoSampleAllocatorCallback_Release(callback);
1417             }
1418         }
1419
1420         source_reader_release(reader);
1421     }
1422
1423     return refcount;
1424 }
1425
1426 static HRESULT WINAPI src_reader_GetStreamSelection(IMFSourceReader *iface, DWORD index, BOOL *selected)
1427 {
1428     struct source_reader *reader = impl_from_IMFSourceReader(iface);
1429
1430     TRACE("%p, %#lx, %p.\n", iface, index, selected);
1431
1432     switch (index)
1433     {
1434         case MF_SOURCE_READER_FIRST_VIDEO_STREAM:
1435             index = reader->first_video_stream_index;
1436             break;
1437         case MF_SOURCE_READER_FIRST_AUDIO_STREAM:
1438             index = reader->first_audio_stream_index;
1439             break;
1440         default:
1441             ;
1442     }
1443
1444     return source_reader_get_stream_selection(reader, index, selected);
1445 }
1446
1447 static HRESULT WINAPI src_reader_SetStreamSelection(IMFSourceReader *iface, DWORD index, BOOL selection)
1448 {
1449     struct source_reader *reader = impl_from_IMFSourceReader(iface);
1450     HRESULT hr = S_OK;
1451     BOOL selection_changed = FALSE, selected;
1452     unsigned int i;
1453
1454     TRACE("%p, %#lx, %d.\n", iface, index, selection);
1455
1456     selection = !!selection;
1457
1458     EnterCriticalSection(&reader->cs);
1459
1460     if (index == MF_SOURCE_READER_ALL_STREAMS)
1461     {
1462         for (i = 0; i < reader->stream_count; ++i)
1463         {
1464             if (!selection_changed)
1465             {
1466                 source_reader_get_stream_selection(reader, i, &selected);
1467                 selection_changed = !!(selected ^ selection);
1468             }
1469
1470             if (selection)
1471                 IMFPresentationDescriptor_SelectStream(reader->descriptor, i);
1472             else
1473                 IMFPresentationDescriptor_DeselectStream(reader->descriptor, i);
1474         }
1475     }
1476     else
1477     {
1478         switch (index)
1479         {
1480             case MF_SOURCE_READER_FIRST_VIDEO_STREAM:
1481                 index = reader->first_video_stream_index;
1482                 break;
1483             case MF_SOURCE_READER_FIRST_AUDIO_STREAM:
1484                 index = reader->first_audio_stream_index;
1485                 break;
1486             default:
1487                 ;
1488         }
1489
1490         source_reader_get_stream_selection(reader, index, &selected);
1491         selection_changed = !!(selected ^ selection);
1492
1493         if (selection)
1494             hr = IMFPresentationDescriptor_SelectStream(reader->descriptor, index);
1495         else
1496             hr = IMFPresentationDescriptor_DeselectStream(reader->descriptor, index);
1497     }
1498
1499     if (selection_changed)
1500     {
1501         for (i = 0; i < reader->stream_count; ++i)
1502         {
1503             reader->streams[i].last_sample_ts = 0;
1504         }
1505     }
1506
1507     LeaveCriticalSection(&reader->cs);
1508
1509     return SUCCEEDED(hr) ? S_OK : MF_E_INVALIDSTREAMNUMBER;
1510 }
1511
1512 static HRESULT source_reader_get_native_media_type(struct source_reader *reader, DWORD index, DWORD type_index,
1513         IMFMediaType **type)
1514 {
1515     IMFMediaTypeHandler *handler;
1516     IMFStreamDescriptor *sd;
1517     IMFMediaType *src_type;
1518     BOOL selected;
1519     HRESULT hr;
1520
1521     switch (index)
1522     {
1523         case MF_SOURCE_READER_FIRST_VIDEO_STREAM:
1524             index = reader->first_video_stream_index;
1525             break;
1526         case MF_SOURCE_READER_FIRST_AUDIO_STREAM:
1527             index = reader->first_audio_stream_index;
1528             break;
1529         default:
1530             ;
1531     }
1532
1533     if (FAILED(IMFPresentationDescriptor_GetStreamDescriptorByIndex(reader->descriptor, index, &selected, &sd)))
1534         return MF_E_INVALIDSTREAMNUMBER;
1535
1536     hr = IMFStreamDescriptor_GetMediaTypeHandler(sd, &handler);
1537     IMFStreamDescriptor_Release(sd);
1538     if (FAILED(hr))
1539         return hr;
1540
1541     if (type_index == MF_SOURCE_READER_CURRENT_TYPE_INDEX)
1542         hr = IMFMediaTypeHandler_GetCurrentMediaType(handler, &src_type);
1543     else
1544         hr = IMFMediaTypeHandler_GetMediaTypeByIndex(handler, type_index, &src_type);
1545     IMFMediaTypeHandler_Release(handler);
1546
1547     if (SUCCEEDED(hr))
1548     {
1549         if (SUCCEEDED(hr = MFCreateMediaType(type)))
1550             hr = IMFMediaType_CopyAllItems(src_type, (IMFAttributes *)*type);
1551         IMFMediaType_Release(src_type);
1552     }
1553
1554     return hr;
1555 }
1556
1557 static HRESULT WINAPI src_reader_GetNativeMediaType(IMFSourceReader *iface, DWORD index, DWORD type_index,
1558             IMFMediaType **type)
1559 {
1560     struct source_reader *reader = impl_from_IMFSourceReader(iface);
1561
1562     TRACE("%p, %#lx, %#lx, %p.\n", iface, index, type_index, type);
1563
1564     return source_reader_get_native_media_type(reader, index, type_index, type);
1565 }
1566
1567 static HRESULT WINAPI src_reader_GetCurrentMediaType(IMFSourceReader *iface, DWORD index, IMFMediaType **type)
1568 {
1569     struct source_reader *reader = impl_from_IMFSourceReader(iface);
1570     HRESULT hr;
1571
1572     TRACE("%p, %#lx, %p.\n", iface, index, type);
1573
1574     switch (index)
1575     {
1576         case MF_SOURCE_READER_FIRST_VIDEO_STREAM:
1577             index = reader->first_video_stream_index;
1578             break;
1579         case MF_SOURCE_READER_FIRST_AUDIO_STREAM:
1580             index = reader->first_audio_stream_index;
1581             break;
1582         default:
1583             ;
1584     }
1585
1586     if (index >= reader->stream_count)
1587         return MF_E_INVALIDSTREAMNUMBER;
1588
1589     if (FAILED(hr = MFCreateMediaType(type)))
1590         return hr;
1591
1592     EnterCriticalSection(&reader->cs);
1593
1594     hr = IMFMediaType_CopyAllItems(reader->streams[index].current, (IMFAttributes *)*type);
1595
1596     LeaveCriticalSection(&reader->cs);
1597
1598     return hr;
1599 }
1600
1601 static HRESULT source_reader_get_source_type_handler(struct source_reader *reader, DWORD index,
1602         IMFMediaTypeHandler **handler)
1603 {
1604     IMFStreamDescriptor *sd;
1605     BOOL selected;
1606     HRESULT hr;
1607
1608     if (FAILED(hr = IMFPresentationDescriptor_GetStreamDescriptorByIndex(reader->descriptor, index, &selected, &sd)))
1609         return hr;
1610
1611     hr = IMFStreamDescriptor_GetMediaTypeHandler(sd, handler);
1612     IMFStreamDescriptor_Release(sd);
1613
1614     return hr;
1615 }
1616
1617 static HRESULT source_reader_set_compatible_media_type(struct source_reader *reader, DWORD index, IMFMediaType *type)
1618 {
1619     IMFMediaTypeHandler *type_handler;
1620     IMFMediaType *native_type;
1621     BOOL type_set = FALSE;
1622     unsigned int i = 0;
1623     DWORD flags;
1624     HRESULT hr;
1625
1626     if (FAILED(hr = IMFMediaType_IsEqual(type, reader->streams[index].current, &flags)))
1627         return hr;
1628
1629     if (!(flags & MF_MEDIATYPE_EQUAL_MAJOR_TYPES))
1630         return MF_E_INVALIDMEDIATYPE;
1631
1632     /* No need for a decoder or type change. */
1633     if (flags & MF_MEDIATYPE_EQUAL_FORMAT_DATA)
1634         return S_OK;
1635
1636     if (FAILED(hr = source_reader_get_source_type_handler(reader, index, &type_handler)))
1637         return hr;
1638
1639     while (!type_set && IMFMediaTypeHandler_GetMediaTypeByIndex(type_handler, i++, &native_type) == S_OK)
1640     {
1641         static const DWORD compare_flags = MF_MEDIATYPE_EQUAL_MAJOR_TYPES | MF_MEDIATYPE_EQUAL_FORMAT_DATA;
1642
1643         if (SUCCEEDED(IMFMediaType_IsEqual(native_type, type, &flags)) && (flags & compare_flags) == compare_flags)
1644         {
1645             if ((type_set = SUCCEEDED(IMFMediaTypeHandler_SetCurrentMediaType(type_handler, native_type))))
1646                 IMFMediaType_CopyAllItems(native_type, (IMFAttributes *)reader->streams[index].current);
1647         }
1648
1649         IMFMediaType_Release(native_type);
1650     }
1651
1652     IMFMediaTypeHandler_Release(type_handler);
1653
1654     return type_set ? S_OK : S_FALSE;
1655 }
1656
1657 static HRESULT source_reader_create_sample_allocator_attributes(const struct source_reader *reader,
1658         IMFAttributes **attributes)
1659 {
1660     UINT32 shared = 0, shared_without_mutex = 0;
1661     HRESULT hr;
1662
1663     if (FAILED(hr = MFCreateAttributes(attributes, 1)))
1664         return hr;
1665
1666     IMFAttributes_GetUINT32(reader->attributes, &MF_SA_D3D11_SHARED, &shared);
1667     IMFAttributes_GetUINT32(reader->attributes, &MF_SA_D3D11_SHARED_WITHOUT_MUTEX, &shared_without_mutex);
1668
1669     if (shared_without_mutex)
1670         hr = IMFAttributes_SetUINT32(*attributes, &MF_SA_D3D11_SHARED_WITHOUT_MUTEX, TRUE);
1671     else if (shared)
1672         hr = IMFAttributes_SetUINT32(*attributes, &MF_SA_D3D11_SHARED, TRUE);
1673
1674     return hr;
1675 }
1676
1677 static HRESULT source_reader_setup_sample_allocator(struct source_reader *reader, unsigned int index)
1678 {
1679     struct media_stream *stream = &reader->streams[index];
1680     IMFAttributes *attributes = NULL;
1681     GUID major = { 0 };
1682     HRESULT hr;
1683
1684     IMFMediaType_GetMajorType(stream->current, &major);
1685     if (!IsEqualGUID(&major, &MFMediaType_Video))
1686         return S_OK;
1687
1688     if (!(reader->flags & SOURCE_READER_HAS_DEVICE_MANAGER))
1689         return S_OK;
1690
1691     if (!stream->allocator)
1692     {
1693         if (FAILED(hr = MFCreateVideoSampleAllocatorEx(&IID_IMFVideoSampleAllocatorEx, (void **)&stream->allocator)))
1694         {
1695             WARN("Failed to create sample allocator, hr %#lx.\n", hr);
1696             return hr;
1697         }
1698     }
1699
1700     IMFVideoSampleAllocatorEx_UninitializeSampleAllocator(stream->allocator);
1701     if (FAILED(hr = IMFVideoSampleAllocatorEx_SetDirectXManager(stream->allocator, reader->device_manager)))
1702     {
1703         WARN("Failed to set device manager, hr %#lx.\n", hr);
1704         return hr;
1705     }
1706
1707     if (FAILED(hr = source_reader_create_sample_allocator_attributes(reader, &attributes)))
1708         WARN("Failed to create allocator attributes, hr %#lx.\n", hr);
1709
1710     if (FAILED(hr = IMFVideoSampleAllocatorEx_InitializeSampleAllocatorEx(stream->allocator, 2, 8,
1711             attributes, stream->current)))
1712     {
1713         WARN("Failed to initialize sample allocator, hr %#lx.\n", hr);
1714     }
1715
1716     if (attributes)
1717         IMFAttributes_Release(attributes);
1718
1719     return hr;
1720 }
1721
1722 static HRESULT source_reader_configure_decoder(struct source_reader *reader, DWORD index, const CLSID *clsid,
1723         IMFMediaType *input_type, IMFMediaType *output_type)
1724 {
1725     IMFMediaTypeHandler *type_handler;
1726     unsigned int block_alignment = 0;
1727     IMFTransform *transform = NULL;
1728     IMFMediaType *type = NULL;
1729     GUID major = { 0 };
1730     DWORD flags;
1731     HRESULT hr;
1732     int i = 0;
1733
1734     if (FAILED(hr = CoCreateInstance(clsid, NULL, CLSCTX_INPROC_SERVER, &IID_IMFTransform, (void **)&transform)))
1735     {
1736         WARN("Failed to create transform object, hr %#lx.\n", hr);
1737         return hr;
1738     }
1739
1740     if (FAILED(hr = IMFTransform_SetInputType(transform, 0, input_type, 0)))
1741     {
1742         WARN("Failed to set decoder input type, hr %#lx.\n", hr);
1743         IMFTransform_Release(transform);
1744         return hr;
1745     }
1746
1747     /* Find the relevant output type. */
1748     while (IMFTransform_GetOutputAvailableType(transform, 0, i++, &type) == S_OK)
1749     {
1750         flags = 0;
1751
1752         if (SUCCEEDED(IMFMediaType_IsEqual(type, output_type, &flags)))
1753         {
1754             if (flags & MF_MEDIATYPE_EQUAL_FORMAT_TYPES)
1755             {
1756                 if (SUCCEEDED(IMFTransform_SetOutputType(transform, 0, type, 0)))
1757                 {
1758                     if (SUCCEEDED(source_reader_get_source_type_handler(reader, index, &type_handler)))
1759                     {
1760                         IMFMediaTypeHandler_SetCurrentMediaType(type_handler, input_type);
1761                         IMFMediaTypeHandler_Release(type_handler);
1762                     }
1763
1764                     if (FAILED(hr = IMFMediaType_CopyAllItems(type, (IMFAttributes *)reader->streams[index].current)))
1765                         WARN("Failed to copy attributes, hr %#lx.\n", hr);
1766                     if (SUCCEEDED(IMFMediaType_GetMajorType(type, &major)) && IsEqualGUID(&major, &MFMediaType_Audio))
1767                         IMFMediaType_GetUINT32(type, &MF_MT_AUDIO_BLOCK_ALIGNMENT, &block_alignment);
1768                     IMFMediaType_Release(type);
1769
1770                     if (reader->streams[index].decoder.transform)
1771                         IMFTransform_Release(reader->streams[index].decoder.transform);
1772
1773                     reader->streams[index].decoder.transform = transform;
1774                     reader->streams[index].decoder.min_buffer_size = block_alignment;
1775
1776                     return S_OK;
1777                 }
1778             }
1779         }
1780
1781         IMFMediaType_Release(type);
1782     }
1783
1784     WARN("Failed to find suitable decoder output type.\n");
1785
1786     IMFTransform_Release(transform);
1787
1788     return MF_E_TOPO_CODEC_NOT_FOUND;
1789 }
1790
1791 static HRESULT source_reader_create_decoder_for_stream(struct source_reader *reader, DWORD index, IMFMediaType *output_type)
1792 {
1793     MFT_REGISTER_TYPE_INFO in_type, out_type;
1794     CLSID *clsids, mft_clsid, category;
1795     unsigned int i = 0, count;
1796     IMFMediaType *input_type;
1797     HRESULT hr;
1798
1799     /* TODO: should we check if the source type is compressed? */
1800
1801     if (FAILED(hr = IMFMediaType_GetMajorType(output_type, &out_type.guidMajorType)))
1802         return hr;
1803
1804     if (IsEqualGUID(&out_type.guidMajorType, &MFMediaType_Video))
1805     {
1806         category = MFT_CATEGORY_VIDEO_DECODER;
1807     }
1808     else if (IsEqualGUID(&out_type.guidMajorType, &MFMediaType_Audio))
1809     {
1810         category = MFT_CATEGORY_AUDIO_DECODER;
1811     }
1812     else
1813     {
1814         WARN("Unhandled major type %s.\n", debugstr_guid(&out_type.guidMajorType));
1815         return MF_E_TOPO_CODEC_NOT_FOUND;
1816     }
1817
1818     if (FAILED(hr = IMFMediaType_GetGUID(output_type, &MF_MT_SUBTYPE, &out_type.guidSubtype)))
1819         return hr;
1820
1821     in_type.guidMajorType = out_type.guidMajorType;
1822
1823     while (source_reader_get_native_media_type(reader, index, i++, &input_type) == S_OK)
1824     {
1825         if (SUCCEEDED(IMFMediaType_GetGUID(input_type, &MF_MT_SUBTYPE, &in_type.guidSubtype)))
1826         {
1827             count = 0;
1828             if (SUCCEEDED(hr = MFTEnum(category, 0, &in_type, &out_type, NULL, &clsids, &count)) && count)
1829             {
1830                 mft_clsid = clsids[0];
1831                 CoTaskMemFree(clsids);
1832
1833                 /* TODO: Should we iterate over all of them? */
1834                 if (SUCCEEDED(source_reader_configure_decoder(reader, index, &mft_clsid, input_type, output_type)))
1835                 {
1836                     IMFMediaType_Release(input_type);
1837                     return S_OK;
1838                 }
1839
1840             }
1841         }
1842
1843         IMFMediaType_Release(input_type);
1844     }
1845
1846     return MF_E_TOPO_CODEC_NOT_FOUND;
1847 }
1848
1849 static HRESULT WINAPI src_reader_SetCurrentMediaType(IMFSourceReader *iface, DWORD index, DWORD *reserved,
1850         IMFMediaType *type)
1851 {
1852     struct source_reader *reader = impl_from_IMFSourceReader(iface);
1853     HRESULT hr;
1854
1855     TRACE("%p, %#lx, %p, %p.\n", iface, index, reserved, type);
1856
1857     switch (index)
1858     {
1859         case MF_SOURCE_READER_FIRST_VIDEO_STREAM:
1860             index = reader->first_video_stream_index;
1861             break;
1862         case MF_SOURCE_READER_FIRST_AUDIO_STREAM:
1863             index = reader->first_audio_stream_index;
1864             break;
1865         default:
1866             ;
1867     }
1868
1869     if (index >= reader->stream_count)
1870         return MF_E_INVALIDSTREAMNUMBER;
1871
1872     /* FIXME: setting the output type while streaming should trigger a flush */
1873
1874     EnterCriticalSection(&reader->cs);
1875
1876     hr = source_reader_set_compatible_media_type(reader, index, type);
1877     if (hr == S_FALSE)
1878         hr = source_reader_create_decoder_for_stream(reader, index, type);
1879     if (SUCCEEDED(hr))
1880         hr = source_reader_setup_sample_allocator(reader, index);
1881
1882     LeaveCriticalSection(&reader->cs);
1883
1884     return hr;
1885 }
1886
1887 static HRESULT WINAPI src_reader_SetCurrentPosition(IMFSourceReader *iface, REFGUID format, REFPROPVARIANT position)
1888 {
1889     struct source_reader *reader = impl_from_IMFSourceReader(iface);
1890     struct source_reader_async_command *command;
1891     unsigned int i;
1892     DWORD flags;
1893     HRESULT hr;
1894
1895     TRACE("%p, %s, %p.\n", iface, debugstr_guid(format), position);
1896
1897     if (FAILED(hr = IMFMediaSource_GetCharacteristics(reader->source, &flags)))
1898         return hr;
1899
1900     if (!(flags & MFMEDIASOURCE_CAN_SEEK))
1901         return MF_E_INVALIDREQUEST;
1902
1903     EnterCriticalSection(&reader->cs);
1904
1905     /* Check if we got pending requests. */
1906     for (i = 0; i < reader->stream_count; ++i)
1907     {
1908         if (reader->streams[i].requests)
1909         {
1910             hr = MF_E_INVALIDREQUEST;
1911             break;
1912         }
1913     }
1914
1915     if (SUCCEEDED(hr))
1916     {
1917         for (i = 0; i < reader->stream_count; ++i)
1918         {
1919             reader->streams[i].last_sample_ts = 0;
1920         }
1921
1922         if (reader->async_callback)
1923         {
1924             if (SUCCEEDED(hr = source_reader_create_async_op(SOURCE_READER_ASYNC_SEEK, &command)))
1925             {
1926                 command->u.seek.format = *format;
1927                 PropVariantCopy(&command->u.seek.position, position);
1928
1929                 hr = MFPutWorkItem(reader->queue, &reader->async_commands_callback, &command->IUnknown_iface);
1930                 IUnknown_Release(&command->IUnknown_iface);
1931             }
1932         }
1933         else
1934         {
1935             if (SUCCEEDED(IMFMediaSource_Start(reader->source, reader->descriptor, format, position)))
1936             {
1937                 reader->flags |= SOURCE_READER_SEEKING;
1938                 while (reader->flags & SOURCE_READER_SEEKING)
1939                 {
1940                     SleepConditionVariableCS(&reader->state_event, &reader->cs, INFINITE);
1941                 }
1942             }
1943         }
1944     }
1945
1946     LeaveCriticalSection(&reader->cs);
1947
1948     return hr;
1949 }
1950
1951 static HRESULT source_reader_read_sample(struct source_reader *reader, DWORD index, DWORD flags, DWORD *actual_index,
1952         DWORD *stream_flags, LONGLONG *timestamp, IMFSample **sample)
1953 {
1954     struct media_stream *stream;
1955     DWORD actual_index_tmp;
1956     LONGLONG timestamp_tmp;
1957     DWORD stream_index;
1958     HRESULT hr = S_OK;
1959
1960     if (!stream_flags || !sample)
1961         return E_POINTER;
1962
1963     *sample = NULL;
1964
1965     if (!timestamp)
1966         timestamp = &timestamp_tmp;
1967
1968     if (!actual_index)
1969         actual_index = &actual_index_tmp;
1970
1971     if (SUCCEEDED(hr = source_reader_start_source(reader)))
1972     {
1973         if (SUCCEEDED(hr = source_reader_get_stream_read_index(reader, index, &stream_index)))
1974         {
1975             *actual_index = stream_index;
1976
1977             stream = &reader->streams[stream_index];
1978
1979             if (!source_reader_get_read_result(reader, stream, flags, &hr, actual_index, stream_flags,
1980                    timestamp, sample))
1981             {
1982                 while (!source_reader_got_response_for_stream(reader, stream) && stream->state != STREAM_STATE_EOS)
1983                 {
1984                     stream->requests++;
1985                     if (FAILED(hr = source_reader_request_sample(reader, stream)))
1986                         WARN("Failed to request a sample, hr %#lx.\n", hr);
1987                     if (stream->stream && !(stream->flags & STREAM_FLAG_SAMPLE_REQUESTED))
1988                     {
1989                         *stream_flags = MF_SOURCE_READERF_ERROR;
1990                         *timestamp = 0;
1991                         break;
1992                     }
1993                     SleepConditionVariableCS(&reader->sample_event, &reader->cs, INFINITE);
1994                 }
1995                 if (SUCCEEDED(hr))
1996                     source_reader_get_read_result(reader, stream, flags, &hr, actual_index, stream_flags,
1997                        timestamp, sample);
1998             }
1999         }
2000         else
2001         {
2002             *actual_index = index;
2003             *stream_flags = MF_SOURCE_READERF_ERROR;
2004             *timestamp = 0;
2005         }
2006     }
2007
2008     TRACE("Stream %lu, got sample %p, flags %#lx.\n", *actual_index, *sample, *stream_flags);
2009
2010     return hr;
2011 }
2012
2013 static HRESULT source_reader_read_sample_async(struct source_reader *reader, unsigned int index, unsigned int flags,
2014         DWORD *actual_index, DWORD *stream_flags, LONGLONG *timestamp, IMFSample **sample)
2015 {
2016     struct source_reader_async_command *command;
2017     HRESULT hr;
2018
2019     if (actual_index || stream_flags || timestamp || sample)
2020         return E_INVALIDARG;
2021
2022     if (reader->flags & SOURCE_READER_FLUSHING)
2023         hr = MF_E_NOTACCEPTING;
2024     else
2025     {
2026         if (SUCCEEDED(hr = source_reader_create_async_op(SOURCE_READER_ASYNC_READ, &command)))
2027         {
2028             command->u.read.stream_index = index;
2029             command->u.read.flags = flags;
2030
2031             hr = MFPutWorkItem(reader->queue, &reader->async_commands_callback, &command->IUnknown_iface);
2032             IUnknown_Release(&command->IUnknown_iface);
2033         }
2034     }
2035
2036     return hr;
2037 }
2038
2039 static HRESULT WINAPI src_reader_ReadSample(IMFSourceReader *iface, DWORD index, DWORD flags, DWORD *actual_index,
2040         DWORD *stream_flags, LONGLONG *timestamp, IMFSample **sample)
2041 {
2042     struct source_reader *reader = impl_from_IMFSourceReader(iface);
2043     HRESULT hr;
2044
2045     TRACE("%p, %#lx, %#lx, %p, %p, %p, %p\n", iface, index, flags, actual_index, stream_flags, timestamp, sample);
2046
2047     EnterCriticalSection(&reader->cs);
2048
2049     while (reader->flags & SOURCE_READER_SEEKING)
2050     {
2051         SleepConditionVariableCS(&reader->state_event, &reader->cs, INFINITE);
2052     }
2053
2054     if (reader->async_callback)
2055         hr = source_reader_read_sample_async(reader, index, flags, actual_index, stream_flags, timestamp, sample);
2056     else
2057         hr = source_reader_read_sample(reader, index, flags, actual_index, stream_flags, timestamp, sample);
2058
2059     LeaveCriticalSection(&reader->cs);
2060
2061     return hr;
2062 }
2063
2064 static HRESULT source_reader_flush_async(struct source_reader *reader, unsigned int index)
2065 {
2066     struct source_reader_async_command *command;
2067     unsigned int stream_index;
2068     HRESULT hr;
2069
2070     if (reader->flags & SOURCE_READER_FLUSHING)
2071         return MF_E_INVALIDREQUEST;
2072
2073     switch (index)
2074     {
2075         case MF_SOURCE_READER_FIRST_VIDEO_STREAM:
2076             stream_index = reader->first_video_stream_index;
2077             break;
2078         case MF_SOURCE_READER_FIRST_AUDIO_STREAM:
2079             stream_index = reader->first_audio_stream_index;
2080             break;
2081         default:
2082             stream_index = index;
2083     }
2084
2085     reader->flags |= SOURCE_READER_FLUSHING;
2086
2087     if (stream_index != MF_SOURCE_READER_ALL_STREAMS && stream_index >= reader->stream_count)
2088         return MF_E_INVALIDSTREAMNUMBER;
2089
2090     if (FAILED(hr = source_reader_create_async_op(SOURCE_READER_ASYNC_FLUSH, &command)))
2091         return hr;
2092
2093     command->u.flush.stream_index = stream_index;
2094
2095     hr = MFPutWorkItem(reader->queue, &reader->async_commands_callback, &command->IUnknown_iface);
2096     IUnknown_Release(&command->IUnknown_iface);
2097
2098     return hr;
2099 }
2100
2101 static HRESULT WINAPI src_reader_Flush(IMFSourceReader *iface, DWORD index)
2102 {
2103     struct source_reader *reader = impl_from_IMFSourceReader(iface);
2104     HRESULT hr;
2105
2106     TRACE("%p, %#lx.\n", iface, index);
2107
2108     EnterCriticalSection(&reader->cs);
2109
2110     if (reader->async_callback)
2111         hr = source_reader_flush_async(reader, index);
2112     else
2113         hr = source_reader_flush(reader, index);
2114
2115     LeaveCriticalSection(&reader->cs);
2116
2117     return hr;
2118 }
2119
2120 static HRESULT WINAPI src_reader_GetServiceForStream(IMFSourceReader *iface, DWORD index, REFGUID service,
2121         REFIID riid, void **object)
2122 {
2123     struct source_reader *reader = impl_from_IMFSourceReader(iface);
2124     IUnknown *obj = NULL;
2125     HRESULT hr = S_OK;
2126
2127     TRACE("%p, %#lx, %s, %s, %p\n", iface, index, debugstr_guid(service), debugstr_guid(riid), object);
2128
2129     EnterCriticalSection(&reader->cs);
2130
2131     switch (index)
2132     {
2133         case MF_SOURCE_READER_MEDIASOURCE:
2134             obj = (IUnknown *)reader->source;
2135             break;
2136         default:
2137             if (index == MF_SOURCE_READER_FIRST_VIDEO_STREAM)
2138                 index = reader->first_video_stream_index;
2139             else if (index == MF_SOURCE_READER_FIRST_AUDIO_STREAM)
2140                 index = reader->first_audio_stream_index;
2141
2142             if (index >= reader->stream_count)
2143                 hr = MF_E_INVALIDSTREAMNUMBER;
2144             else
2145             {
2146                 obj = (IUnknown *)reader->streams[index].decoder.transform;
2147                 if (!obj) hr = E_NOINTERFACE;
2148             }
2149             break;
2150     }
2151
2152     if (obj)
2153         IUnknown_AddRef(obj);
2154
2155     LeaveCriticalSection(&reader->cs);
2156
2157     if (obj)
2158     {
2159         if (IsEqualGUID(service, &GUID_NULL))
2160         {
2161             hr = IUnknown_QueryInterface(obj, riid, object);
2162         }
2163         else
2164         {
2165             IMFGetService *gs;
2166
2167             hr = IUnknown_QueryInterface(obj, &IID_IMFGetService, (void **)&gs);
2168             if (SUCCEEDED(hr))
2169             {
2170                 hr = IMFGetService_GetService(gs, service, riid, object);
2171                 IMFGetService_Release(gs);
2172             }
2173         }
2174     }
2175
2176     if (obj)
2177         IUnknown_Release(obj);
2178
2179     return hr;
2180 }
2181
2182 static HRESULT WINAPI src_reader_GetPresentationAttribute(IMFSourceReader *iface, DWORD index,
2183         REFGUID guid, PROPVARIANT *value)
2184 {
2185     struct source_reader *reader = impl_from_IMFSourceReader(iface);
2186     IMFStreamDescriptor *sd;
2187     BOOL selected;
2188     HRESULT hr;
2189
2190     TRACE("%p, %#lx, %s, %p.\n", iface, index, debugstr_guid(guid), value);
2191
2192     switch (index)
2193     {
2194         case MF_SOURCE_READER_MEDIASOURCE:
2195             if (IsEqualGUID(guid, &MF_SOURCE_READER_MEDIASOURCE_CHARACTERISTICS))
2196             {
2197                 DWORD flags;
2198
2199                 if (FAILED(hr = IMFMediaSource_GetCharacteristics(reader->source, &flags)))
2200                     return hr;
2201
2202                 value->vt = VT_UI4;
2203                 value->ulVal = flags;
2204                 return S_OK;
2205             }
2206             else
2207             {
2208                 return IMFPresentationDescriptor_GetItem(reader->descriptor, guid, value);
2209             }
2210             break;
2211         case MF_SOURCE_READER_FIRST_VIDEO_STREAM:
2212             index = reader->first_video_stream_index;
2213             break;
2214         case MF_SOURCE_READER_FIRST_AUDIO_STREAM:
2215             index = reader->first_audio_stream_index;
2216             break;
2217         default:
2218             ;
2219     }
2220
2221     if (FAILED(hr = IMFPresentationDescriptor_GetStreamDescriptorByIndex(reader->descriptor, index, &selected, &sd)))
2222         return hr;
2223
2224     hr = IMFStreamDescriptor_GetItem(sd, guid, value);
2225     IMFStreamDescriptor_Release(sd);
2226
2227     return hr;
2228 }
2229
2230 static const IMFSourceReaderVtbl srcreader_vtbl =
2231 {
2232     src_reader_QueryInterface,
2233     src_reader_AddRef,
2234     src_reader_Release,
2235     src_reader_GetStreamSelection,
2236     src_reader_SetStreamSelection,
2237     src_reader_GetNativeMediaType,
2238     src_reader_GetCurrentMediaType,
2239     src_reader_SetCurrentMediaType,
2240     src_reader_SetCurrentPosition,
2241     src_reader_ReadSample,
2242     src_reader_Flush,
2243     src_reader_GetServiceForStream,
2244     src_reader_GetPresentationAttribute
2245 };
2246
2247 static DWORD reader_get_first_stream_index(IMFPresentationDescriptor *descriptor, const GUID *major)
2248 {
2249     DWORD count, i;
2250     BOOL selected;
2251     HRESULT hr;
2252     GUID guid;
2253
2254     if (FAILED(IMFPresentationDescriptor_GetStreamDescriptorCount(descriptor, &count)))
2255         return MF_SOURCE_READER_INVALID_STREAM_INDEX;
2256
2257     for (i = 0; i < count; ++i)
2258     {
2259         IMFMediaTypeHandler *handler;
2260         IMFStreamDescriptor *sd;
2261
2262         if (SUCCEEDED(IMFPresentationDescriptor_GetStreamDescriptorByIndex(descriptor, i, &selected, &sd)))
2263         {
2264             hr = IMFStreamDescriptor_GetMediaTypeHandler(sd, &handler);
2265             IMFStreamDescriptor_Release(sd);
2266             if (SUCCEEDED(hr))
2267             {
2268                 hr = IMFMediaTypeHandler_GetMajorType(handler, &guid);
2269                 IMFMediaTypeHandler_Release(handler);
2270                 if (FAILED(hr))
2271                 {
2272                     WARN("Failed to get stream major type, hr %#lx.\n", hr);
2273                     continue;
2274                 }
2275
2276                 if (IsEqualGUID(&guid, major))
2277                 {
2278                     return i;
2279                 }
2280             }
2281         }
2282     }
2283
2284     return MF_SOURCE_READER_INVALID_STREAM_INDEX;
2285 }
2286
2287 static HRESULT create_source_reader_from_source(IMFMediaSource *source, IMFAttributes *attributes,
2288         BOOL shutdown_on_release, REFIID riid, void **out)
2289 {
2290     struct source_reader *object;
2291     unsigned int i;
2292     HRESULT hr;
2293
2294     object = calloc(1, sizeof(*object));
2295     if (!object)
2296         return E_OUTOFMEMORY;
2297
2298     object->IMFSourceReader_iface.lpVtbl = &srcreader_vtbl;
2299     object->source_events_callback.lpVtbl = &source_events_callback_vtbl;
2300     object->stream_events_callback.lpVtbl = &stream_events_callback_vtbl;
2301     object->async_commands_callback.lpVtbl = &async_commands_callback_vtbl;
2302     object->public_refcount = 1;
2303     object->refcount = 1;
2304     list_init(&object->responses);
2305     if (shutdown_on_release)
2306         object->flags |= SOURCE_READER_SHUTDOWN_ON_RELEASE;
2307     object->source = source;
2308     IMFMediaSource_AddRef(object->source);
2309     InitializeCriticalSection(&object->cs);
2310     InitializeConditionVariable(&object->sample_event);
2311     InitializeConditionVariable(&object->state_event);
2312     InitializeConditionVariable(&object->stop_event);
2313
2314     if (FAILED(hr = IMFMediaSource_CreatePresentationDescriptor(object->source, &object->descriptor)))
2315         goto failed;
2316
2317     if (FAILED(hr = IMFPresentationDescriptor_GetStreamDescriptorCount(object->descriptor, &object->stream_count)))
2318         goto failed;
2319
2320     if (!(object->streams = calloc(object->stream_count, sizeof(*object->streams))))
2321     {
2322         hr = E_OUTOFMEMORY;
2323         goto failed;
2324     }
2325
2326     /* Set initial current media types. */
2327     for (i = 0; i < object->stream_count; ++i)
2328     {
2329         IMFMediaTypeHandler *handler;
2330         IMFStreamDescriptor *sd;
2331         IMFMediaType *src_type;
2332         BOOL selected;
2333
2334         if (FAILED(hr = MFCreateMediaType(&object->streams[i].current)))
2335             break;
2336
2337         if (FAILED(hr = IMFPresentationDescriptor_GetStreamDescriptorByIndex(object->descriptor, i, &selected, &sd)))
2338             break;
2339
2340         if (FAILED(hr = IMFStreamDescriptor_GetStreamIdentifier(sd, &object->streams[i].id)))
2341             WARN("Failed to get stream identifier, hr %#lx.\n", hr);
2342
2343         hr = IMFStreamDescriptor_GetMediaTypeHandler(sd, &handler);
2344         IMFStreamDescriptor_Release(sd);
2345         if (FAILED(hr))
2346             break;
2347
2348         hr = IMFMediaTypeHandler_GetMediaTypeByIndex(handler, 0, &src_type);
2349         IMFMediaTypeHandler_Release(handler);
2350         if (FAILED(hr))
2351             break;
2352
2353         hr = IMFMediaType_CopyAllItems(src_type, (IMFAttributes *)object->streams[i].current);
2354         IMFMediaType_Release(src_type);
2355         if (FAILED(hr))
2356             break;
2357
2358         object->streams[i].reader = object;
2359         object->streams[i].index = i;
2360     }
2361
2362     if (FAILED(hr))
2363         goto failed;
2364
2365     /* At least one major type has to be set. */
2366     object->first_audio_stream_index = reader_get_first_stream_index(object->descriptor, &MFMediaType_Audio);
2367     object->first_video_stream_index = reader_get_first_stream_index(object->descriptor, &MFMediaType_Video);
2368
2369     if (object->first_audio_stream_index == MF_SOURCE_READER_INVALID_STREAM_INDEX &&
2370             object->first_video_stream_index == MF_SOURCE_READER_INVALID_STREAM_INDEX)
2371     {
2372         hr = MF_E_ATTRIBUTENOTFOUND;
2373     }
2374
2375     if (FAILED(hr = IMFMediaSource_BeginGetEvent(object->source, &object->source_events_callback,
2376             (IUnknown *)object->source)))
2377     {
2378         goto failed;
2379     }
2380
2381     if (attributes)
2382     {
2383         object->attributes = attributes;
2384         IMFAttributes_AddRef(object->attributes);
2385
2386         IMFAttributes_GetUnknown(attributes, &MF_SOURCE_READER_ASYNC_CALLBACK, &IID_IMFSourceReaderCallback,
2387                 (void **)&object->async_callback);
2388         if (object->async_callback)
2389             TRACE("Using async callback %p.\n", object->async_callback);
2390
2391         IMFAttributes_GetUnknown(attributes, &MF_SOURCE_READER_D3D_MANAGER, &IID_IUnknown, (void **)&object->device_manager);
2392         if (object->device_manager)
2393         {
2394             IUnknown *unk = NULL;
2395
2396             if (SUCCEEDED(IUnknown_QueryInterface(object->device_manager, &IID_IMFDXGIDeviceManager, (void **)&unk)))
2397                 object->flags |= SOURCE_READER_DXGI_DEVICE_MANAGER;
2398             else if (SUCCEEDED(IUnknown_QueryInterface(object->device_manager, &IID_IDirect3DDeviceManager9, (void **)&unk)))
2399                 object->flags |= SOURCE_READER_D3D9_DEVICE_MANAGER;
2400
2401             if (!(object->flags & (SOURCE_READER_HAS_DEVICE_MANAGER)))
2402             {
2403                 WARN("Unknown device manager.\n");
2404                 IUnknown_Release(object->device_manager);
2405                 object->device_manager = NULL;
2406             }
2407
2408             if (unk)
2409                 IUnknown_Release(unk);
2410         }
2411     }
2412
2413     if (FAILED(hr = MFLockSharedWorkQueue(L"", 0, NULL, &object->queue)))
2414         WARN("Failed to acquired shared queue, hr %#lx.\n", hr);
2415
2416     if (SUCCEEDED(hr))
2417         hr = IMFSourceReader_QueryInterface(&object->IMFSourceReader_iface, riid, out);
2418
2419 failed:
2420     IMFSourceReader_Release(&object->IMFSourceReader_iface);
2421     return hr;
2422 }
2423
2424 static HRESULT create_source_reader_from_stream(IMFByteStream *stream, IMFAttributes *attributes,
2425         REFIID riid, void **out)
2426 {
2427     IPropertyStore *props = NULL;
2428     IMFSourceResolver *resolver;
2429     MF_OBJECT_TYPE obj_type;
2430     IMFMediaSource *source;
2431     HRESULT hr;
2432
2433     if (FAILED(hr = MFCreateSourceResolver(&resolver)))
2434         return hr;
2435
2436     if (attributes)
2437         IMFAttributes_GetUnknown(attributes, &MF_SOURCE_READER_MEDIASOURCE_CONFIG, &IID_IPropertyStore,
2438                 (void **)&props);
2439
2440     hr = IMFSourceResolver_CreateObjectFromByteStream(resolver, stream, NULL, MF_RESOLUTION_MEDIASOURCE
2441             | MF_RESOLUTION_CONTENT_DOES_NOT_HAVE_TO_MATCH_EXTENSION_OR_MIME_TYPE, props, &obj_type, (IUnknown **)&source);
2442     IMFSourceResolver_Release(resolver);
2443     if (props)
2444         IPropertyStore_Release(props);
2445     if (FAILED(hr))
2446         return hr;
2447
2448     hr = create_source_reader_from_source(source, attributes, TRUE, riid, out);
2449     IMFMediaSource_Release(source);
2450     return hr;
2451 }
2452
2453 static HRESULT create_source_reader_from_url(const WCHAR *url, IMFAttributes *attributes, REFIID riid, void **out)
2454 {
2455     IPropertyStore *props = NULL;
2456     IMFSourceResolver *resolver;
2457     IUnknown *object = NULL;
2458     MF_OBJECT_TYPE obj_type;
2459     IMFMediaSource *source;
2460     HRESULT hr;
2461
2462     if (FAILED(hr = MFCreateSourceResolver(&resolver)))
2463         return hr;
2464
2465     if (attributes)
2466         IMFAttributes_GetUnknown(attributes, &MF_SOURCE_READER_MEDIASOURCE_CONFIG, &IID_IPropertyStore,
2467                 (void **)&props);
2468
2469     hr = IMFSourceResolver_CreateObjectFromURL(resolver, url, MF_RESOLUTION_MEDIASOURCE, props, &obj_type,
2470             &object);
2471     if (SUCCEEDED(hr))
2472     {
2473         switch (obj_type)
2474         {
2475             case MF_OBJECT_BYTESTREAM:
2476                 hr = IMFSourceResolver_CreateObjectFromByteStream(resolver, (IMFByteStream *)object, NULL,
2477                         MF_RESOLUTION_MEDIASOURCE, props, &obj_type, (IUnknown **)&source);
2478                 break;
2479             case MF_OBJECT_MEDIASOURCE:
2480                 source = (IMFMediaSource *)object;
2481                 IMFMediaSource_AddRef(source);
2482                 break;
2483             default:
2484                 WARN("Unknown object type %d.\n", obj_type);
2485                 hr = E_UNEXPECTED;
2486         }
2487         IUnknown_Release(object);
2488     }
2489
2490     IMFSourceResolver_Release(resolver);
2491     if (props)
2492         IPropertyStore_Release(props);
2493     if (FAILED(hr))
2494         return hr;
2495
2496     hr = create_source_reader_from_source(source, attributes, TRUE, riid, out);
2497     IMFMediaSource_Release(source);
2498     return hr;
2499 }
2500
2501 static HRESULT create_source_reader_from_object(IUnknown *unk, IMFAttributes *attributes, REFIID riid, void **out)
2502 {
2503     IMFMediaSource *source = NULL;
2504     IMFByteStream *stream = NULL;
2505     HRESULT hr;
2506
2507     hr = IUnknown_QueryInterface(unk, &IID_IMFMediaSource, (void **)&source);
2508     if (FAILED(hr))
2509         hr = IUnknown_QueryInterface(unk, &IID_IMFByteStream, (void **)&stream);
2510
2511     if (source)
2512     {
2513         UINT32 disconnect = 0;
2514
2515         if (attributes)
2516             IMFAttributes_GetUINT32(attributes, &MF_SOURCE_READER_DISCONNECT_MEDIASOURCE_ON_SHUTDOWN, &disconnect);
2517         hr = create_source_reader_from_source(source, attributes, !disconnect, riid, out);
2518     }
2519     else if (stream)
2520         hr = create_source_reader_from_stream(stream, attributes, riid, out);
2521
2522     if (source)
2523         IMFMediaSource_Release(source);
2524     if (stream)
2525         IMFByteStream_Release(stream);
2526
2527     return hr;
2528 }
2529
2530 /***********************************************************************
2531  *      MFCreateSourceReaderFromByteStream (mfreadwrite.@)
2532  */
2533 HRESULT WINAPI MFCreateSourceReaderFromByteStream(IMFByteStream *stream, IMFAttributes *attributes,
2534         IMFSourceReader **reader)
2535 {
2536     TRACE("%p, %p, %p.\n", stream, attributes, reader);
2537
2538     return create_source_reader_from_object((IUnknown *)stream, attributes, &IID_IMFSourceReader, (void **)reader);
2539 }
2540
2541 /***********************************************************************
2542  *      MFCreateSourceReaderFromMediaSource (mfreadwrite.@)
2543  */
2544 HRESULT WINAPI MFCreateSourceReaderFromMediaSource(IMFMediaSource *source, IMFAttributes *attributes,
2545         IMFSourceReader **reader)
2546 {
2547     TRACE("%p, %p, %p.\n", source, attributes, reader);
2548
2549     return create_source_reader_from_object((IUnknown *)source, attributes, &IID_IMFSourceReader, (void **)reader);
2550 }
2551
2552 /***********************************************************************
2553  *      MFCreateSourceReaderFromURL (mfreadwrite.@)
2554  */
2555 HRESULT WINAPI MFCreateSourceReaderFromURL(const WCHAR *url, IMFAttributes *attributes, IMFSourceReader **reader)
2556 {
2557     TRACE("%s, %p, %p.\n", debugstr_w(url), attributes, reader);
2558
2559     return create_source_reader_from_url(url, attributes, &IID_IMFSourceReader, (void **)reader);
2560 }
2561
2562 static HRESULT WINAPI readwrite_factory_QueryInterface(IMFReadWriteClassFactory *iface, REFIID riid, void **out)
2563 {
2564     if (IsEqualIID(riid, &IID_IMFReadWriteClassFactory) ||
2565             IsEqualIID(riid, &IID_IUnknown))
2566     {
2567         *out = iface;
2568         IMFReadWriteClassFactory_AddRef(iface);
2569         return S_OK;
2570     }
2571
2572     WARN("Unsupported interface %s.\n", debugstr_guid(riid));
2573     *out = NULL;
2574     return E_NOINTERFACE;
2575 }
2576
2577 static ULONG WINAPI readwrite_factory_AddRef(IMFReadWriteClassFactory *iface)
2578 {
2579     return 2;
2580 }
2581
2582 static ULONG WINAPI readwrite_factory_Release(IMFReadWriteClassFactory *iface)
2583 {
2584     return 1;
2585 }
2586
2587 static HRESULT WINAPI readwrite_factory_CreateInstanceFromURL(IMFReadWriteClassFactory *iface, REFCLSID clsid,
2588         const WCHAR *url, IMFAttributes *attributes, REFIID riid, void **out)
2589 {
2590     TRACE("%s, %s, %p, %s, %p.\n", debugstr_guid(clsid), debugstr_w(url), attributes, debugstr_guid(riid), out);
2591
2592     if (IsEqualGUID(clsid, &CLSID_MFSourceReader))
2593     {
2594         return create_source_reader_from_url(url, attributes, &IID_IMFSourceReader, out);
2595     }
2596     else if (IsEqualGUID(clsid, &CLSID_MFSinkWriter))
2597     {
2598         return create_sink_writer_from_url(url, NULL, attributes, riid, out);
2599     }
2600
2601     FIXME("Unsupported %s.\n", debugstr_guid(clsid));
2602
2603     return E_NOTIMPL;
2604 }
2605
2606 static HRESULT WINAPI readwrite_factory_CreateInstanceFromObject(IMFReadWriteClassFactory *iface, REFCLSID clsid,
2607         IUnknown *unk, IMFAttributes *attributes, REFIID riid, void **out)
2608 {
2609     HRESULT hr;
2610
2611     TRACE("%s, %p, %p, %s, %p.\n", debugstr_guid(clsid), unk, attributes, debugstr_guid(riid), out);
2612
2613     if (IsEqualGUID(clsid, &CLSID_MFSourceReader))
2614     {
2615         return create_source_reader_from_object(unk, attributes, riid, out);
2616     }
2617     else if (IsEqualGUID(clsid, &CLSID_MFSinkWriter))
2618     {
2619         IMFByteStream *stream = NULL;
2620         IMFMediaSink *sink = NULL;
2621
2622         hr = IUnknown_QueryInterface(unk, &IID_IMFByteStream, (void **)&stream);
2623         if (FAILED(hr))
2624             hr = IUnknown_QueryInterface(unk, &IID_IMFMediaSink, (void **)&sink);
2625
2626         if (stream)
2627             hr = create_sink_writer_from_url(NULL, stream, attributes, riid, out);
2628         else if (sink)
2629             hr = create_sink_writer_from_sink(sink, attributes, riid, out);
2630
2631         if (sink)
2632             IMFMediaSink_Release(sink);
2633         if (stream)
2634             IMFByteStream_Release(stream);
2635
2636         return hr;
2637     }
2638     else
2639     {
2640         WARN("Unsupported class %s.\n", debugstr_guid(clsid));
2641         *out = NULL;
2642         return E_FAIL;
2643     }
2644 }
2645
2646 static const IMFReadWriteClassFactoryVtbl readwrite_factory_vtbl =
2647 {
2648     readwrite_factory_QueryInterface,
2649     readwrite_factory_AddRef,
2650     readwrite_factory_Release,
2651     readwrite_factory_CreateInstanceFromURL,
2652     readwrite_factory_CreateInstanceFromObject,
2653 };
2654
2655 static IMFReadWriteClassFactory readwrite_factory = { &readwrite_factory_vtbl };
2656
2657 static HRESULT WINAPI classfactory_QueryInterface(IClassFactory *iface, REFIID riid, void **out)
2658 {
2659     TRACE("%s, %p.\n", debugstr_guid(riid), out);
2660
2661     if (IsEqualGUID(riid, &IID_IClassFactory) ||
2662             IsEqualGUID(riid, &IID_IUnknown))
2663     {
2664         IClassFactory_AddRef(iface);
2665         *out = iface;
2666         return S_OK;
2667     }
2668
2669     WARN("interface %s not implemented\n", debugstr_guid(riid));
2670     *out = NULL;
2671     return E_NOINTERFACE;
2672 }
2673
2674 static ULONG WINAPI classfactory_AddRef(IClassFactory *iface)
2675 {
2676     return 2;
2677 }
2678
2679 static ULONG WINAPI classfactory_Release(IClassFactory *iface)
2680 {
2681     return 1;
2682 }
2683
2684 static HRESULT WINAPI classfactory_CreateInstance(IClassFactory *iface, IUnknown *outer, REFIID riid, void **out)
2685 {
2686     TRACE("%p, %s, %p.\n", outer, debugstr_guid(riid), out);
2687
2688     *out = NULL;
2689
2690     if (outer)
2691         return CLASS_E_NOAGGREGATION;
2692
2693     return IMFReadWriteClassFactory_QueryInterface(&readwrite_factory, riid, out);
2694 }
2695
2696 static HRESULT WINAPI classfactory_LockServer(IClassFactory *iface, BOOL dolock)
2697 {
2698     FIXME("%d.\n", dolock);
2699     return S_OK;
2700 }
2701
2702 static const IClassFactoryVtbl classfactoryvtbl =
2703 {
2704     classfactory_QueryInterface,
2705     classfactory_AddRef,
2706     classfactory_Release,
2707     classfactory_CreateInstance,
2708     classfactory_LockServer,
2709 };
2710
2711 static IClassFactory classfactory = { &classfactoryvtbl };
2712
2713 HRESULT WINAPI DllGetClassObject(REFCLSID clsid, REFIID riid, void **out)
2714 {
2715     TRACE("%s, %s, %p.\n", debugstr_guid(clsid), debugstr_guid(riid), out);
2716
2717     if (IsEqualGUID(clsid, &CLSID_MFReadWriteClassFactory))
2718         return IClassFactory_QueryInterface(&classfactory, riid, out);
2719
2720     WARN("Unsupported class %s.\n", debugstr_guid(clsid));
2721     *out = NULL;
2722     return CLASS_E_CLASSNOTAVAILABLE;
2723 }