dlls/winegstreamer/video_processor.c

   1 /* Copyright 2022 Rémi Bernon for CodeWeavers
   2  *
   3  * This library is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU Lesser General Public
   5  * License as published by the Free Software Foundation; either
   6  * version 2.1 of the License, or (at your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * Lesser General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public
  14  * License along with this library; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  16  */
  17
  18 #include "gst_private.h"
  19
  20 #include "mfapi.h"
  21 #include "mferror.h"
  22 #include "mfobjects.h"
  23 #include "mftransform.h"
  24 #include "wmcodecdsp.h"
  25
  26 #include "wine/debug.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(mfplat);
  29 WINE_DECLARE_DEBUG_CHANNEL(winediag);
  30
  31 static const GUID *const input_types[] =
  32 {
  33     &MFVideoFormat_IYUV,
  34     &MFVideoFormat_YV12,
  35     &MFVideoFormat_NV12,
  36     &MFVideoFormat_420O,
  37     &MFVideoFormat_UYVY,
  38     &MFVideoFormat_YUY2,
  39     &MEDIASUBTYPE_P208,
  40     &MFVideoFormat_NV11,
  41     &MFVideoFormat_AYUV,
  42     &MFVideoFormat_ARGB32,
  43     &MFVideoFormat_RGB32,
  44     &MFVideoFormat_RGB24,
  45     &MFVideoFormat_I420,
  46     &MFVideoFormat_YVYU,
  47     &MFVideoFormat_RGB555,
  48     &MFVideoFormat_RGB565,
  49     &MFVideoFormat_RGB8,
  50     &MFVideoFormat_Y216,
  51     &MFVideoFormat_v410,
  52     &MFVideoFormat_Y41P,
  53     &MFVideoFormat_Y41T,
  54     &MFVideoFormat_Y42T,
  55 };
  56 static const GUID *const output_types[] =
  57 {
  58     &MFVideoFormat_YUY2,
  59     &MFVideoFormat_IYUV,
  60     &MFVideoFormat_I420,
  61     &MFVideoFormat_NV12,
  62     &MFVideoFormat_RGB24,
  63     &MFVideoFormat_ARGB32,
  64     &MFVideoFormat_RGB32,
  65     &MFVideoFormat_YV12,
  66     &MFVideoFormat_AYUV,
  67     &MFVideoFormat_RGB555,
  68     &MFVideoFormat_RGB565,
  69 };
  70
  71 struct video_processor
  72 {
  73     IMFTransform IMFTransform_iface;
  74     LONG refcount;
  75
  76     IMFMediaType *input_type;
  77     IMFMediaType *output_type;
  78     IMFAttributes *attributes;
  79     IMFAttributes *output_attributes;
  80
  81     struct wg_transform *wg_transform;
  82     struct wg_sample_queue *wg_sample_queue;
  83 };
  84
  85 static HRESULT try_create_wg_transform(struct video_processor *impl)
  86 {
  87     struct wg_format input_format, output_format;
  88
  89     if (impl->wg_transform)
  90         wg_transform_destroy(impl->wg_transform);
  91     impl->wg_transform = NULL;
  92
  93     mf_media_type_to_wg_format(impl->input_type, &input_format);
  94     if (input_format.major_type == WG_MAJOR_TYPE_UNKNOWN)
  95         return MF_E_INVALIDMEDIATYPE;
  96
  97     mf_media_type_to_wg_format(impl->output_type, &output_format);
  98     if (output_format.major_type == WG_MAJOR_TYPE_UNKNOWN)
  99         return MF_E_INVALIDMEDIATYPE;
 100
 101     if (!(impl->wg_transform = wg_transform_create(&input_format, &output_format)))
 102         return E_FAIL;
 103
 104     return S_OK;
 105 }
 106
 107 static struct video_processor *impl_from_IMFTransform(IMFTransform *iface)
 108 {
 109     return CONTAINING_RECORD(iface, struct video_processor, IMFTransform_iface);
 110 }
 111
 112 static HRESULT WINAPI video_processor_QueryInterface(IMFTransform *iface, REFIID iid, void **out)
 113 {
 114     struct video_processor *impl = impl_from_IMFTransform(iface);
 115
 116     TRACE("iface %p, iid %s, out %p.\n", iface, debugstr_guid(iid), out);
 117
 118     if (IsEqualGUID(iid, &IID_IMFTransform))
 119         *out = &impl->IMFTransform_iface;
 120     else
 121     {
 122         *out = NULL;
 123         WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
 124         return E_NOINTERFACE;
 125     }
 126
 127     IUnknown_AddRef((IUnknown *)*out);
 128     return S_OK;
 129 }
 130
 131 static ULONG WINAPI video_processor_AddRef(IMFTransform *iface)
 132 {
 133     struct video_processor *impl = impl_from_IMFTransform(iface);
 134     ULONG refcount = InterlockedIncrement(&impl->refcount);
 135
 136     TRACE("iface %p increasing refcount to %lu.\n", iface, refcount);
 137
 138     return refcount;
 139 }
 140
 141 static ULONG WINAPI video_processor_Release(IMFTransform *iface)
 142 {
 143     struct video_processor *impl = impl_from_IMFTransform(iface);
 144     ULONG refcount = InterlockedDecrement(&impl->refcount);
 145
 146     TRACE("iface %p decreasing refcount to %lu.\n", iface, refcount);
 147
 148     if (!refcount)
 149     {
 150         if (impl->wg_transform)
 151             wg_transform_destroy(impl->wg_transform);
 152         if (impl->input_type)
 153             IMFMediaType_Release(impl->input_type);
 154         if (impl->output_type)
 155             IMFMediaType_Release(impl->output_type);
 156         if (impl->attributes)
 157             IMFAttributes_Release(impl->attributes);
 158         if (impl->output_attributes)
 159             IMFAttributes_Release(impl->output_attributes);
 160
 161         wg_sample_queue_destroy(impl->wg_sample_queue);
 162         free(impl);
 163     }
 164
 165     return refcount;
 166 }
 167
 168 static HRESULT WINAPI video_processor_GetStreamLimits(IMFTransform *iface, DWORD *input_minimum,
 169         DWORD *input_maximum, DWORD *output_minimum, DWORD *output_maximum)
 170 {
 171     TRACE("iface %p, input_minimum %p, input_maximum %p, output_minimum %p, output_maximum %p.\n",
 172             iface, input_minimum, input_maximum, output_minimum, output_maximum);
 173     *input_minimum = *input_maximum = *output_minimum = *output_maximum = 1;
 174     return S_OK;
 175 }
 176
 177 static HRESULT WINAPI video_processor_GetStreamCount(IMFTransform *iface, DWORD *inputs, DWORD *outputs)
 178 {
 179     TRACE("iface %p, inputs %p, outputs %p.\n", iface, inputs, outputs);
 180     *inputs = *outputs = 1;
 181     return S_OK;
 182 }
 183
 184 static HRESULT WINAPI video_processor_GetStreamIDs(IMFTransform *iface, DWORD input_size, DWORD *inputs,
 185         DWORD output_size, DWORD *outputs)
 186 {
 187     FIXME("iface %p, input_size %lu, inputs %p, output_size %lu, outputs %p stub!\n", iface,
 188             input_size, inputs, output_size, outputs);
 189     return E_NOTIMPL;
 190 }
 191
 192 static HRESULT WINAPI video_processor_GetInputStreamInfo(IMFTransform *iface, DWORD id, MFT_INPUT_STREAM_INFO *info)
 193 {
 194     struct video_processor *impl = impl_from_IMFTransform(iface);
 195     UINT32 sample_size;
 196     UINT64 framesize;
 197     GUID subtype;
 198     HRESULT hr;
 199
 200     TRACE("iface %p, id %#lx, info %p.\n", iface, id, info);
 201
 202     if (id)
 203         return MF_E_INVALIDSTREAMNUMBER;
 204
 205     if (impl->input_type && SUCCEEDED(hr = IMFMediaType_GetGUID(impl->input_type, &MF_MT_SUBTYPE, &subtype))
 206             && SUCCEEDED(hr = IMFMediaType_GetUINT64(impl->input_type, &MF_MT_FRAME_SIZE, &framesize)))
 207         MFCalculateImageSize(&subtype, framesize >> 32, (UINT32)framesize, &sample_size);
 208     else
 209         sample_size = 0;
 210
 211     info->dwFlags = 0;
 212     info->cbSize = sample_size;
 213     info->cbAlignment = 0;
 214     info->hnsMaxLatency = 0;
 215     info->cbMaxLookahead = 0;
 216
 217     return S_OK;
 218 }
 219
 220 static HRESULT WINAPI video_processor_GetOutputStreamInfo(IMFTransform *iface, DWORD id, MFT_OUTPUT_STREAM_INFO *info)
 221 {
 222     struct video_processor *impl = impl_from_IMFTransform(iface);
 223     UINT32 sample_size;
 224     UINT64 framesize;
 225     GUID subtype;
 226     HRESULT hr;
 227
 228     TRACE("iface %p, id %#lx, info %p.\n", iface, id, info);
 229
 230     if (id)
 231         return MF_E_INVALIDSTREAMNUMBER;
 232
 233     if (impl->output_type && SUCCEEDED(hr = IMFMediaType_GetGUID(impl->output_type, &MF_MT_SUBTYPE, &subtype))
 234             && SUCCEEDED(hr = IMFMediaType_GetUINT64(impl->output_type, &MF_MT_FRAME_SIZE, &framesize)))
 235         MFCalculateImageSize(&subtype, framesize >> 32, (UINT32)framesize, &sample_size);
 236     else
 237         sample_size = 0;
 238
 239     info->dwFlags = 0;
 240     info->cbSize = sample_size;
 241     info->cbAlignment = 0;
 242
 243     return S_OK;
 244 }
 245
 246 static HRESULT WINAPI video_processor_GetAttributes(IMFTransform *iface, IMFAttributes **attributes)
 247 {
 248     struct video_processor *impl = impl_from_IMFTransform(iface);
 249
 250     FIXME("iface %p, attributes %p stub!\n", iface, attributes);
 251
 252     IMFAttributes_AddRef((*attributes = impl->attributes));
 253     return S_OK;
 254 }
 255
 256 static HRESULT WINAPI video_processor_GetInputStreamAttributes(IMFTransform *iface, DWORD id, IMFAttributes **attributes)
 257 {
 258     FIXME("iface %p, id %#lx, attributes %p stub!\n", iface, id, attributes);
 259     return E_NOTIMPL;
 260 }
 261
 262 static HRESULT WINAPI video_processor_GetOutputStreamAttributes(IMFTransform *iface, DWORD id, IMFAttributes **attributes)
 263 {
 264     struct video_processor *impl = impl_from_IMFTransform(iface);
 265
 266     FIXME("iface %p, id %#lx, attributes %p stub!\n", iface, id, attributes);
 267
 268     IMFAttributes_AddRef((*attributes = impl->output_attributes));
 269     return S_OK;
 270 }
 271
 272 static HRESULT WINAPI video_processor_DeleteInputStream(IMFTransform *iface, DWORD id)
 273 {
 274     FIXME("iface %p, id %#lx stub!\n", iface, id);
 275     return E_NOTIMPL;
 276 }
 277
 278 static HRESULT WINAPI video_processor_AddInputStreams(IMFTransform *iface, DWORD streams, DWORD *ids)
 279 {
 280     FIXME("iface %p, streams %lu, ids %p stub!\n", iface, streams, ids);
 281     return E_NOTIMPL;
 282 }
 283
 284 static HRESULT WINAPI video_processor_GetInputAvailableType(IMFTransform *iface, DWORD id, DWORD index,
 285         IMFMediaType **type)
 286 {
 287     IMFMediaType *media_type;
 288     const GUID *subtype;
 289     HRESULT hr;
 290
 291     TRACE("iface %p, id %#lx, index %#lx, type %p.\n", iface, id, index, type);
 292
 293     *type = NULL;
 294
 295     if (index >= ARRAY_SIZE(input_types))
 296         return MF_E_NO_MORE_TYPES;
 297     subtype = input_types[index];
 298
 299     if (FAILED(hr = MFCreateMediaType(&media_type)))
 300         return hr;
 301
 302     if (FAILED(hr = IMFMediaType_SetGUID(media_type, &MF_MT_MAJOR_TYPE, &MFMediaType_Video)))
 303         goto done;
 304     if (FAILED(hr = IMFMediaType_SetGUID(media_type, &MF_MT_SUBTYPE, subtype)))
 305         goto done;
 306
 307     IMFMediaType_AddRef((*type = media_type));
 308
 309 done:
 310     IMFMediaType_Release(media_type);
 311     return hr;
 312 }
 313
 314 static HRESULT WINAPI video_processor_GetOutputAvailableType(IMFTransform *iface, DWORD id, DWORD index,
 315         IMFMediaType **type)
 316 {
 317     struct video_processor *impl = impl_from_IMFTransform(iface);
 318     IMFMediaType *media_type;
 319     UINT64 frame_size;
 320     GUID subtype;
 321     HRESULT hr;
 322
 323     TRACE("iface %p, id %#lx, index %#lx, type %p.\n", iface, id, index, type);
 324
 325     *type = NULL;
 326
 327     if (!impl->input_type)
 328         return MF_E_NO_MORE_TYPES;
 329
 330     if (FAILED(hr = IMFMediaType_GetGUID(impl->input_type, &MF_MT_SUBTYPE, &subtype))
 331             || FAILED(hr = IMFMediaType_GetUINT64(impl->input_type, &MF_MT_FRAME_SIZE, &frame_size)))
 332         return hr;
 333
 334     if (index > ARRAY_SIZE(output_types))
 335         return MF_E_NO_MORE_TYPES;
 336     if (index > 0)
 337         subtype = *output_types[index - 1];
 338
 339     if (FAILED(hr = MFCreateMediaType(&media_type)))
 340         return hr;
 341
 342     if (FAILED(hr = IMFMediaType_SetGUID(media_type, &MF_MT_MAJOR_TYPE, &MFMediaType_Video)))
 343         goto done;
 344     if (FAILED(hr = IMFMediaType_SetGUID(media_type, &MF_MT_SUBTYPE, &subtype)))
 345         goto done;
 346     if (FAILED(hr = IMFMediaType_SetUINT64(media_type, &MF_MT_FRAME_SIZE, frame_size)))
 347         goto done;
 348
 349     IMFMediaType_AddRef((*type = media_type));
 350
 351 done:
 352     IMFMediaType_Release(media_type);
 353     return hr;
 354 }
 355
 356 static HRESULT WINAPI video_processor_SetInputType(IMFTransform *iface, DWORD id, IMFMediaType *type, DWORD flags)
 357 {
 358     struct video_processor *impl = impl_from_IMFTransform(iface);
 359     GUID major, subtype;
 360     UINT64 frame_size;
 361     HRESULT hr;
 362     ULONG i;
 363
 364     TRACE("iface %p, id %#lx, type %p, flags %#lx.\n", iface, id, type, flags);
 365
 366     if (FAILED(IMFMediaType_GetGUID(type, &MF_MT_MAJOR_TYPE, &major))
 367             || !IsEqualGUID(&major, &MFMediaType_Video))
 368         return E_INVALIDARG;
 369     if (FAILED(IMFMediaType_GetGUID(type, &MF_MT_SUBTYPE, &subtype)))
 370         return MF_E_INVALIDMEDIATYPE;
 371     if (FAILED(hr = IMFMediaType_GetUINT64(type, &MF_MT_FRAME_SIZE, &frame_size)))
 372         return hr;
 373
 374     for (i = 0; i < ARRAY_SIZE(input_types); ++i)
 375         if (IsEqualGUID(&subtype, input_types[i]))
 376             break;
 377     if (i == ARRAY_SIZE(input_types))
 378         return MF_E_INVALIDMEDIATYPE;
 379     if (flags & MFT_SET_TYPE_TEST_ONLY)
 380         return S_OK;
 381
 382     if (impl->input_type)
 383         IMFMediaType_Release(impl->input_type);
 384     IMFMediaType_AddRef((impl->input_type = type));
 385
 386     if (impl->output_type && FAILED(hr = try_create_wg_transform(impl)))
 387     {
 388         IMFMediaType_Release(impl->input_type);
 389         impl->input_type = NULL;
 390     }
 391
 392     return hr;
 393 }
 394
 395 static HRESULT WINAPI video_processor_SetOutputType(IMFTransform *iface, DWORD id, IMFMediaType *type, DWORD flags)
 396 {
 397     struct video_processor *impl = impl_from_IMFTransform(iface);
 398     GUID major, subtype;
 399     UINT64 frame_size;
 400     HRESULT hr;
 401     ULONG i;
 402
 403     TRACE("iface %p, id %#lx, type %p, flags %#lx.\n", iface, id, type, flags);
 404
 405     if (FAILED(IMFMediaType_GetGUID(type, &MF_MT_MAJOR_TYPE, &major))
 406             || !IsEqualGUID(&major, &MFMediaType_Video))
 407         return E_INVALIDARG;
 408     if (FAILED(IMFMediaType_GetGUID(type, &MF_MT_SUBTYPE, &subtype)))
 409         return MF_E_INVALIDMEDIATYPE;
 410     if (FAILED(hr = IMFMediaType_GetUINT64(type, &MF_MT_FRAME_SIZE, &frame_size)))
 411         return hr;
 412
 413     for (i = 0; i < ARRAY_SIZE(output_types); ++i)
 414         if (IsEqualGUID(&subtype, output_types[i]))
 415             break;
 416     if (i == ARRAY_SIZE(output_types))
 417         return MF_E_INVALIDMEDIATYPE;
 418     if (flags & MFT_SET_TYPE_TEST_ONLY)
 419         return S_OK;
 420
 421     if (impl->output_type)
 422         IMFMediaType_Release(impl->output_type);
 423     IMFMediaType_AddRef((impl->output_type = type));
 424
 425     if (impl->input_type && FAILED(hr = try_create_wg_transform(impl)))
 426     {
 427         IMFMediaType_Release(impl->output_type);
 428         impl->output_type = NULL;
 429     }
 430
 431     return hr;
 432 }
 433
 434 static HRESULT WINAPI video_processor_GetInputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
 435 {
 436     struct video_processor *impl = impl_from_IMFTransform(iface);
 437     HRESULT hr;
 438
 439     TRACE("iface %p, id %#lx, type %p.\n", iface, id, type);
 440
 441     if (id != 0)
 442         return MF_E_INVALIDSTREAMNUMBER;
 443
 444     if (!impl->input_type)
 445         return MF_E_TRANSFORM_TYPE_NOT_SET;
 446
 447     if (FAILED(hr = MFCreateMediaType(type)))
 448         return hr;
 449
 450     if (FAILED(hr = IMFMediaType_CopyAllItems(impl->input_type, (IMFAttributes *)*type)))
 451         IMFMediaType_Release(*type);
 452
 453     return hr;
 454 }
 455
 456 static HRESULT WINAPI video_processor_GetOutputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
 457 {
 458     struct video_processor *impl = impl_from_IMFTransform(iface);
 459     HRESULT hr;
 460
 461     TRACE("iface %p, id %#lx, type %p.\n", iface, id, type);
 462
 463     if (id != 0)
 464         return MF_E_INVALIDSTREAMNUMBER;
 465
 466     if (!impl->output_type)
 467         return MF_E_TRANSFORM_TYPE_NOT_SET;
 468
 469     if (FAILED(hr = MFCreateMediaType(type)))
 470         return hr;
 471
 472     if (FAILED(hr = IMFMediaType_CopyAllItems(impl->output_type, (IMFAttributes *)*type)))
 473         IMFMediaType_Release(*type);
 474
 475     return hr;
 476 }
 477
 478 static HRESULT WINAPI video_processor_GetInputStatus(IMFTransform *iface, DWORD id, DWORD *flags)
 479 {
 480     struct video_processor *impl = impl_from_IMFTransform(iface);
 481
 482     FIXME("iface %p, id %#lx, flags %p stub!\n", iface, id, flags);
 483
 484     if (!impl->input_type)
 485         return MF_E_TRANSFORM_TYPE_NOT_SET;
 486
 487     *flags = MFT_INPUT_STATUS_ACCEPT_DATA;
 488     return S_OK;
 489 }
 490
 491 static HRESULT WINAPI video_processor_GetOutputStatus(IMFTransform *iface, DWORD *flags)
 492 {
 493     struct video_processor *impl = impl_from_IMFTransform(iface);
 494
 495     FIXME("iface %p, flags %p stub!\n", iface, flags);
 496
 497     if (!impl->output_type)
 498         return MF_E_TRANSFORM_TYPE_NOT_SET;
 499
 500     return E_NOTIMPL;
 501 }
 502
 503 static HRESULT WINAPI video_processor_SetOutputBounds(IMFTransform *iface, LONGLONG lower, LONGLONG upper)
 504 {
 505     FIXME("iface %p, lower %I64d, upper %I64d stub!\n", iface, lower, upper);
 506     return E_NOTIMPL;
 507 }
 508
 509 static HRESULT WINAPI video_processor_ProcessEvent(IMFTransform *iface, DWORD id, IMFMediaEvent *event)
 510 {
 511     FIXME("iface %p, id %#lx, event %p stub!\n", iface, id, event);
 512     return E_NOTIMPL;
 513 }
 514
 515 static HRESULT WINAPI video_processor_ProcessMessage(IMFTransform *iface, MFT_MESSAGE_TYPE message, ULONG_PTR param)
 516 {
 517     FIXME("iface %p, message %#x, param %#Ix stub!\n", iface, message, param);
 518     return S_OK;
 519 }
 520
 521 static HRESULT WINAPI video_processor_ProcessInput(IMFTransform *iface, DWORD id, IMFSample *sample, DWORD flags)
 522 {
 523     struct video_processor *impl = impl_from_IMFTransform(iface);
 524
 525     TRACE("iface %p, id %#lx, sample %p, flags %#lx.\n", iface, id, sample, flags);
 526
 527     if (!impl->wg_transform)
 528         return MF_E_TRANSFORM_TYPE_NOT_SET;
 529
 530     return wg_transform_push_mf(impl->wg_transform, sample, impl->wg_sample_queue);
 531 }
 532
 533 static HRESULT WINAPI video_processor_ProcessOutput(IMFTransform *iface, DWORD flags, DWORD count,
 534         MFT_OUTPUT_DATA_BUFFER *samples, DWORD *status)
 535 {
 536     struct video_processor *impl = impl_from_IMFTransform(iface);
 537     MFT_OUTPUT_STREAM_INFO info;
 538     struct wg_sample *wg_sample;
 539     HRESULT hr;
 540
 541     TRACE("iface %p, flags %#lx, count %lu, samples %p, status %p.\n", iface, flags, count, samples, status);
 542
 543     if (count != 1)
 544         return E_INVALIDARG;
 545
 546     if (FAILED(hr = IMFTransform_GetOutputStreamInfo(iface, 0, &info)))
 547         return hr;
 548
 549     if (!impl->wg_transform)
 550         return MF_E_TRANSFORM_TYPE_NOT_SET;
 551
 552     samples[0].dwStatus = 0;
 553     if (!samples[0].pSample) return E_INVALIDARG;
 554
 555     if (FAILED(hr = wg_sample_create_mf(samples[0].pSample, &wg_sample)))
 556         return hr;
 557
 558     if (wg_sample->max_size < info.cbSize)
 559     {
 560         wg_sample_release(wg_sample);
 561         return MF_E_BUFFERTOOSMALL;
 562     }
 563
 564     if (SUCCEEDED(hr = wg_transform_read_mf(impl->wg_transform, wg_sample, NULL,
 565             &samples[0].dwStatus)))
 566         wg_sample_queue_flush(impl->wg_sample_queue, false);
 567
 568     wg_sample_release(wg_sample);
 569
 570     return hr;
 571 }
 572
 573 static const IMFTransformVtbl video_processor_vtbl =
 574 {
 575     video_processor_QueryInterface,
 576     video_processor_AddRef,
 577     video_processor_Release,
 578     video_processor_GetStreamLimits,
 579     video_processor_GetStreamCount,
 580     video_processor_GetStreamIDs,
 581     video_processor_GetInputStreamInfo,
 582     video_processor_GetOutputStreamInfo,
 583     video_processor_GetAttributes,
 584     video_processor_GetInputStreamAttributes,
 585     video_processor_GetOutputStreamAttributes,
 586     video_processor_DeleteInputStream,
 587     video_processor_AddInputStreams,
 588     video_processor_GetInputAvailableType,
 589     video_processor_GetOutputAvailableType,
 590     video_processor_SetInputType,
 591     video_processor_SetOutputType,
 592     video_processor_GetInputCurrentType,
 593     video_processor_GetOutputCurrentType,
 594     video_processor_GetInputStatus,
 595     video_processor_GetOutputStatus,
 596     video_processor_SetOutputBounds,
 597     video_processor_ProcessEvent,
 598     video_processor_ProcessMessage,
 599     video_processor_ProcessInput,
 600     video_processor_ProcessOutput,
 601 };
 602
 603 HRESULT video_processor_create(REFIID riid, void **ret)
 604 {
 605     static const struct wg_format input_format =
 606     {
 607         .major_type = WG_MAJOR_TYPE_VIDEO,
 608         .u.video =
 609         {
 610             .format = WG_VIDEO_FORMAT_I420,
 611             .width = 1920,
 612             .height = 1080,
 613         },
 614     };
 615     static const struct wg_format output_format =
 616     {
 617         .major_type = WG_MAJOR_TYPE_VIDEO,
 618         .u.video =
 619         {
 620             .format = WG_VIDEO_FORMAT_NV12,
 621             .width = 1920,
 622             .height = 1080,
 623         },
 624     };
 625     struct wg_transform *transform;
 626     struct video_processor *impl;
 627     HRESULT hr;
 628
 629     TRACE("riid %s, ret %p.\n", debugstr_guid(riid), ret);
 630
 631     if (!(transform = wg_transform_create(&input_format, &output_format)))
 632     {
 633         ERR_(winediag)("GStreamer doesn't support video conversion, please install appropriate plugins.\n");
 634         return E_FAIL;
 635     }
 636     wg_transform_destroy(transform);
 637
 638     if (!(impl = calloc(1, sizeof(*impl))))
 639         return E_OUTOFMEMORY;
 640
 641     if (FAILED(hr = MFCreateAttributes(&impl->attributes, 0)))
 642         goto failed;
 643     if (FAILED(hr = MFCreateAttributes(&impl->output_attributes, 0)))
 644         goto failed;
 645     if (FAILED(hr = wg_sample_queue_create(&impl->wg_sample_queue)))
 646         goto failed;
 647
 648     impl->IMFTransform_iface.lpVtbl = &video_processor_vtbl;
 649     impl->refcount = 1;
 650
 651     *ret = &impl->IMFTransform_iface;
 652     TRACE("Created %p\n", *ret);
 653     return S_OK;
 654
 655 failed:
 656     if (impl->output_attributes)
 657         IMFAttributes_Release(impl->output_attributes);
 658     if (impl->attributes)
 659         IMFAttributes_Release(impl->attributes);
 660     free(impl);
 661     return hr;
 662 }