dlls/winegstreamer/h264_decoder.c

   1 /* H264 Decoder Transform
   2  *
   3  * Copyright 2022 Rémi Bernon for CodeWeavers
   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 "gst_private.h"
  21
  22 #include "mfapi.h"
  23 #include "mferror.h"
  24 #include "mfobjects.h"
  25 #include "mftransform.h"
  26
  27 #include "wine/debug.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(mfplat);
  30 WINE_DECLARE_DEBUG_CHANNEL(winediag);
  31
  32 #define ALIGN_SIZE(size, alignment) (((size) + (alignment)) & ~((alignment)))
  33
  34 static const GUID *const h264_decoder_input_types[] =
  35 {
  36     &MFVideoFormat_H264,
  37     &MFVideoFormat_H264_ES,
  38 };
  39 static const GUID *const h264_decoder_output_types[] =
  40 {
  41     &MFVideoFormat_NV12,
  42     &MFVideoFormat_YV12,
  43     &MFVideoFormat_IYUV,
  44     &MFVideoFormat_I420,
  45     &MFVideoFormat_YUY2,
  46 };
  47
  48 struct h264_decoder
  49 {
  50     IMFTransform IMFTransform_iface;
  51     LONG refcount;
  52
  53     IMFAttributes *attributes;
  54     IMFAttributes *output_attributes;
  55
  56     IMFMediaType *input_type;
  57     MFT_INPUT_STREAM_INFO input_info;
  58     IMFMediaType *output_type;
  59     MFT_OUTPUT_STREAM_INFO output_info;
  60
  61     struct wg_format wg_format;
  62     struct wg_transform *wg_transform;
  63     struct wg_sample_queue *wg_sample_queue;
  64 };
  65
  66 static struct h264_decoder *impl_from_IMFTransform(IMFTransform *iface)
  67 {
  68     return CONTAINING_RECORD(iface, struct h264_decoder, IMFTransform_iface);
  69 }
  70
  71 static HRESULT try_create_wg_transform(struct h264_decoder *decoder)
  72 {
  73     struct wg_format input_format;
  74     struct wg_format output_format;
  75
  76     if (decoder->wg_transform)
  77         wg_transform_destroy(decoder->wg_transform);
  78     decoder->wg_transform = NULL;
  79
  80     mf_media_type_to_wg_format(decoder->input_type, &input_format);
  81     if (input_format.major_type == WG_MAJOR_TYPE_UNKNOWN)
  82         return MF_E_INVALIDMEDIATYPE;
  83
  84     mf_media_type_to_wg_format(decoder->output_type, &output_format);
  85     if (output_format.major_type == WG_MAJOR_TYPE_UNKNOWN)
  86         return MF_E_INVALIDMEDIATYPE;
  87
  88     /* Don't force any specific size, H264 streams already have the metadata for it
  89      * and will generate a MF_E_TRANSFORM_STREAM_CHANGE result later.
  90      */
  91     output_format.u.video.width = 0;
  92     output_format.u.video.height = 0;
  93     output_format.u.video.fps_d = 0;
  94     output_format.u.video.fps_n = 0;
  95
  96     if (!(decoder->wg_transform = wg_transform_create(&input_format, &output_format)))
  97         return E_FAIL;
  98
  99     return S_OK;
 100 }
 101
 102 static HRESULT fill_output_media_type(struct h264_decoder *decoder, IMFMediaType *media_type)
 103 {
 104     IMFMediaType *default_type = decoder->output_type;
 105     struct wg_format *wg_format = &decoder->wg_format;
 106     UINT32 value, width, height;
 107     UINT64 ratio;
 108     GUID subtype;
 109     HRESULT hr;
 110
 111     if (FAILED(hr = IMFMediaType_GetGUID(media_type, &MF_MT_SUBTYPE, &subtype)))
 112         return hr;
 113
 114     if (FAILED(hr = IMFMediaType_GetUINT64(media_type, &MF_MT_FRAME_SIZE, &ratio)))
 115     {
 116         ratio = (UINT64)wg_format->u.video.width << 32 | wg_format->u.video.height;
 117         if (FAILED(hr = IMFMediaType_SetUINT64(media_type, &MF_MT_FRAME_SIZE, ratio)))
 118             return hr;
 119     }
 120     width = ratio >> 32;
 121     height = ratio;
 122
 123     if (FAILED(hr = IMFMediaType_GetItem(media_type, &MF_MT_FRAME_RATE, NULL)))
 124     {
 125         ratio = (UINT64)wg_format->u.video.fps_n << 32 | wg_format->u.video.fps_d;
 126         if (FAILED(hr = IMFMediaType_SetUINT64(media_type, &MF_MT_FRAME_RATE, ratio)))
 127             return hr;
 128     }
 129
 130     if (FAILED(hr = IMFMediaType_GetItem(media_type, &MF_MT_PIXEL_ASPECT_RATIO, NULL)))
 131     {
 132         ratio = (UINT64)1 << 32 | 1; /* FIXME: read it from format */
 133         if (FAILED(hr = IMFMediaType_SetUINT64(media_type, &MF_MT_PIXEL_ASPECT_RATIO, ratio)))
 134             return hr;
 135     }
 136
 137     if (FAILED(hr = IMFMediaType_GetItem(media_type, &MF_MT_SAMPLE_SIZE, NULL)))
 138     {
 139         if (FAILED(hr = MFCalculateImageSize(&subtype, width, height, &value)))
 140             return hr;
 141         if (FAILED(hr = IMFMediaType_SetUINT32(media_type, &MF_MT_SAMPLE_SIZE, value)))
 142             return hr;
 143     }
 144
 145     if (FAILED(hr = IMFMediaType_GetItem(media_type, &MF_MT_DEFAULT_STRIDE, NULL)))
 146     {
 147         if (FAILED(hr = MFGetStrideForBitmapInfoHeader(subtype.Data1, width, (LONG *)&value)))
 148             return hr;
 149         if (FAILED(hr = IMFMediaType_SetUINT32(media_type, &MF_MT_DEFAULT_STRIDE, value)))
 150             return hr;
 151     }
 152
 153     if (FAILED(hr = IMFMediaType_GetItem(media_type, &MF_MT_INTERLACE_MODE, NULL)))
 154     {
 155         if (!default_type || FAILED(hr = IMFMediaType_GetUINT32(default_type, &MF_MT_INTERLACE_MODE, &value)))
 156             value = MFVideoInterlace_MixedInterlaceOrProgressive;
 157         if (FAILED(hr = IMFMediaType_SetUINT32(media_type, &MF_MT_INTERLACE_MODE, value)))
 158             return hr;
 159     }
 160
 161     if (FAILED(hr = IMFMediaType_GetItem(media_type, &MF_MT_ALL_SAMPLES_INDEPENDENT, NULL)))
 162     {
 163         if (!default_type || FAILED(hr = IMFMediaType_GetUINT32(default_type, &MF_MT_ALL_SAMPLES_INDEPENDENT, &value)))
 164             value = 1;
 165         if (FAILED(hr = IMFMediaType_SetUINT32(media_type, &MF_MT_ALL_SAMPLES_INDEPENDENT, value)))
 166             return hr;
 167     }
 168
 169     if (FAILED(hr = IMFMediaType_GetItem(media_type, &MF_MT_VIDEO_ROTATION, NULL)))
 170     {
 171         if (!default_type || FAILED(hr = IMFMediaType_GetUINT32(default_type, &MF_MT_VIDEO_ROTATION, &value)))
 172             value = 0;
 173         if (FAILED(hr = IMFMediaType_SetUINT32(media_type, &MF_MT_VIDEO_ROTATION, value)))
 174             return hr;
 175     }
 176
 177     if (FAILED(hr = IMFMediaType_GetItem(media_type, &MF_MT_FIXED_SIZE_SAMPLES, NULL)))
 178     {
 179         if (!default_type || FAILED(hr = IMFMediaType_GetUINT32(default_type, &MF_MT_FIXED_SIZE_SAMPLES, &value)))
 180             value = 1;
 181         if (FAILED(hr = IMFMediaType_SetUINT32(media_type, &MF_MT_FIXED_SIZE_SAMPLES, value)))
 182             return hr;
 183     }
 184
 185     if (FAILED(hr = IMFMediaType_GetItem(media_type, &MF_MT_MINIMUM_DISPLAY_APERTURE, NULL))
 186             && !IsRectEmpty(&wg_format->u.video.padding))
 187     {
 188         MFVideoArea aperture =
 189         {
 190             .OffsetX = {.value = wg_format->u.video.padding.left},
 191             .OffsetY = {.value = wg_format->u.video.padding.top},
 192             .Area.cx = wg_format->u.video.width - wg_format->u.video.padding.right - wg_format->u.video.padding.left,
 193             .Area.cy = wg_format->u.video.height - wg_format->u.video.padding.bottom - wg_format->u.video.padding.top,
 194         };
 195
 196         if (FAILED(hr = IMFMediaType_SetBlob(media_type, &MF_MT_MINIMUM_DISPLAY_APERTURE,
 197                 (BYTE *)&aperture, sizeof(aperture))))
 198             return hr;
 199     }
 200
 201     return S_OK;
 202 }
 203
 204 static HRESULT WINAPI transform_QueryInterface(IMFTransform *iface, REFIID iid, void **out)
 205 {
 206     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 207
 208     TRACE("iface %p, iid %s, out %p.\n", iface, debugstr_guid(iid), out);
 209
 210     if (IsEqualGUID(iid, &IID_IUnknown) ||
 211             IsEqualGUID(iid, &IID_IMFTransform))
 212         *out = &decoder->IMFTransform_iface;
 213     else
 214     {
 215         *out = NULL;
 216         WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
 217         return E_NOINTERFACE;
 218     }
 219
 220     IUnknown_AddRef((IUnknown *)*out);
 221     return S_OK;
 222 }
 223
 224 static ULONG WINAPI transform_AddRef(IMFTransform *iface)
 225 {
 226     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 227     ULONG refcount = InterlockedIncrement(&decoder->refcount);
 228
 229     TRACE("iface %p increasing refcount to %lu.\n", decoder, refcount);
 230
 231     return refcount;
 232 }
 233
 234 static ULONG WINAPI transform_Release(IMFTransform *iface)
 235 {
 236     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 237     ULONG refcount = InterlockedDecrement(&decoder->refcount);
 238
 239     TRACE("iface %p decreasing refcount to %lu.\n", decoder, refcount);
 240
 241     if (!refcount)
 242     {
 243         if (decoder->wg_transform)
 244             wg_transform_destroy(decoder->wg_transform);
 245         if (decoder->input_type)
 246             IMFMediaType_Release(decoder->input_type);
 247         if (decoder->output_type)
 248             IMFMediaType_Release(decoder->output_type);
 249         if (decoder->output_attributes)
 250             IMFAttributes_Release(decoder->output_attributes);
 251         if (decoder->attributes)
 252             IMFAttributes_Release(decoder->attributes);
 253
 254         wg_sample_queue_destroy(decoder->wg_sample_queue);
 255         free(decoder);
 256     }
 257
 258     return refcount;
 259 }
 260
 261 static HRESULT WINAPI transform_GetStreamLimits(IMFTransform *iface, DWORD *input_minimum,
 262         DWORD *input_maximum, DWORD *output_minimum, DWORD *output_maximum)
 263 {
 264     TRACE("iface %p, input_minimum %p, input_maximum %p, output_minimum %p, output_maximum %p.\n",
 265             iface, input_minimum, input_maximum, output_minimum, output_maximum);
 266     *input_minimum = *input_maximum = *output_minimum = *output_maximum = 1;
 267     return S_OK;
 268 }
 269
 270 static HRESULT WINAPI transform_GetStreamCount(IMFTransform *iface, DWORD *inputs, DWORD *outputs)
 271 {
 272     TRACE("iface %p, inputs %p, outputs %p.\n", iface, inputs, outputs);
 273     *inputs = *outputs = 1;
 274     return S_OK;
 275 }
 276
 277 static HRESULT WINAPI transform_GetStreamIDs(IMFTransform *iface, DWORD input_size, DWORD *inputs,
 278         DWORD output_size, DWORD *outputs)
 279 {
 280     TRACE("iface %p, input_size %lu, inputs %p, output_size %lu, outputs %p.\n", iface,
 281             input_size, inputs, output_size, outputs);
 282     return E_NOTIMPL;
 283 }
 284
 285 static HRESULT WINAPI transform_GetInputStreamInfo(IMFTransform *iface, DWORD id, MFT_INPUT_STREAM_INFO *info)
 286 {
 287     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 288
 289     TRACE("iface %p, id %#lx, info %p.\n", iface, id, info);
 290
 291     *info = decoder->input_info;
 292     return S_OK;
 293 }
 294
 295 static HRESULT WINAPI transform_GetOutputStreamInfo(IMFTransform *iface, DWORD id, MFT_OUTPUT_STREAM_INFO *info)
 296 {
 297     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 298
 299     TRACE("iface %p, id %#lx, info %p.\n", iface, id, info);
 300
 301     *info = decoder->output_info;
 302     return S_OK;
 303 }
 304
 305 static HRESULT WINAPI transform_GetAttributes(IMFTransform *iface, IMFAttributes **attributes)
 306 {
 307     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 308
 309     FIXME("iface %p, attributes %p semi-stub!\n", iface, attributes);
 310
 311     if (!attributes)
 312         return E_POINTER;
 313
 314     IMFAttributes_AddRef((*attributes = decoder->attributes));
 315     return S_OK;
 316 }
 317
 318 static HRESULT WINAPI transform_GetInputStreamAttributes(IMFTransform *iface, DWORD id, IMFAttributes **attributes)
 319 {
 320     TRACE("iface %p, id %#lx, attributes %p.\n", iface, id, attributes);
 321     return E_NOTIMPL;
 322 }
 323
 324 static HRESULT WINAPI transform_GetOutputStreamAttributes(IMFTransform *iface, DWORD id, IMFAttributes **attributes)
 325 {
 326     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 327
 328     FIXME("iface %p, id %#lx, attributes %p semi-stub!\n", iface, id, attributes);
 329
 330     if (!attributes)
 331         return E_POINTER;
 332     if (id)
 333         return MF_E_INVALIDSTREAMNUMBER;
 334
 335     IMFAttributes_AddRef((*attributes = decoder->output_attributes));
 336     return S_OK;
 337 }
 338
 339 static HRESULT WINAPI transform_DeleteInputStream(IMFTransform *iface, DWORD id)
 340 {
 341     TRACE("iface %p, id %#lx.\n", iface, id);
 342     return E_NOTIMPL;
 343 }
 344
 345 static HRESULT WINAPI transform_AddInputStreams(IMFTransform *iface, DWORD streams, DWORD *ids)
 346 {
 347     TRACE("iface %p, streams %lu, ids %p.\n", iface, streams, ids);
 348     return E_NOTIMPL;
 349 }
 350
 351 static HRESULT WINAPI transform_GetInputAvailableType(IMFTransform *iface, DWORD id, DWORD index,
 352         IMFMediaType **type)
 353 {
 354     IMFMediaType *media_type;
 355     const GUID *subtype;
 356     HRESULT hr;
 357
 358     TRACE("iface %p, id %#lx, index %#lx, type %p.\n", iface, id, index, type);
 359
 360     *type = NULL;
 361
 362     if (index >= ARRAY_SIZE(h264_decoder_input_types))
 363         return MF_E_NO_MORE_TYPES;
 364     subtype = h264_decoder_input_types[index];
 365
 366     if (FAILED(hr = MFCreateMediaType(&media_type)))
 367         return hr;
 368
 369     if (SUCCEEDED(hr = IMFMediaType_SetGUID(media_type, &MF_MT_MAJOR_TYPE, &MFMediaType_Video)) &&
 370             SUCCEEDED(hr = IMFMediaType_SetGUID(media_type, &MF_MT_SUBTYPE, subtype)))
 371         IMFMediaType_AddRef((*type = media_type));
 372
 373     IMFMediaType_Release(media_type);
 374     return hr;
 375 }
 376
 377 static HRESULT WINAPI transform_GetOutputAvailableType(IMFTransform *iface, DWORD id,
 378         DWORD index, IMFMediaType **type)
 379 {
 380     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 381     IMFMediaType *media_type;
 382     const GUID *output_type;
 383     HRESULT hr;
 384
 385     TRACE("iface %p, id %#lx, index %#lx, type %p.\n", iface, id, index, type);
 386
 387     if (!decoder->input_type)
 388         return MF_E_TRANSFORM_TYPE_NOT_SET;
 389
 390     *type = NULL;
 391
 392     if (index >= ARRAY_SIZE(h264_decoder_output_types))
 393         return MF_E_NO_MORE_TYPES;
 394     output_type = h264_decoder_output_types[index];
 395
 396     if (FAILED(hr = MFCreateMediaType(&media_type)))
 397         return hr;
 398
 399     if (FAILED(hr = IMFMediaType_SetGUID(media_type, &MF_MT_MAJOR_TYPE, &MFMediaType_Video)))
 400         goto done;
 401     if (FAILED(hr = IMFMediaType_SetGUID(media_type, &MF_MT_SUBTYPE, output_type)))
 402         goto done;
 403
 404     hr = fill_output_media_type(decoder, media_type);
 405
 406 done:
 407     if (SUCCEEDED(hr))
 408         IMFMediaType_AddRef((*type = media_type));
 409
 410     IMFMediaType_Release(media_type);
 411     return hr;
 412 }
 413
 414 static HRESULT WINAPI transform_SetInputType(IMFTransform *iface, DWORD id, IMFMediaType *type, DWORD flags)
 415 {
 416     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 417     GUID major, subtype;
 418     UINT64 frame_size;
 419     HRESULT hr;
 420     ULONG i;
 421
 422     TRACE("iface %p, id %#lx, type %p, flags %#lx.\n", iface, id, type, flags);
 423
 424     if (FAILED(hr = IMFMediaType_GetGUID(type, &MF_MT_MAJOR_TYPE, &major)) ||
 425             FAILED(hr = IMFMediaType_GetGUID(type, &MF_MT_SUBTYPE, &subtype)))
 426         return E_INVALIDARG;
 427
 428     if (!IsEqualGUID(&major, &MFMediaType_Video))
 429         return MF_E_INVALIDMEDIATYPE;
 430
 431     for (i = 0; i < ARRAY_SIZE(h264_decoder_input_types); ++i)
 432         if (IsEqualGUID(&subtype, h264_decoder_input_types[i]))
 433             break;
 434     if (i == ARRAY_SIZE(h264_decoder_input_types))
 435         return MF_E_INVALIDMEDIATYPE;
 436     if (flags & MFT_SET_TYPE_TEST_ONLY)
 437         return S_OK;
 438
 439     if (decoder->output_type)
 440     {
 441         IMFMediaType_Release(decoder->output_type);
 442         decoder->output_type = NULL;
 443     }
 444
 445     if (decoder->input_type)
 446         IMFMediaType_Release(decoder->input_type);
 447     IMFMediaType_AddRef((decoder->input_type = type));
 448
 449     if (SUCCEEDED(IMFMediaType_GetUINT64(type, &MF_MT_FRAME_SIZE, &frame_size)))
 450     {
 451         decoder->wg_format.u.video.width = frame_size >> 32;
 452         decoder->wg_format.u.video.height = (UINT32)frame_size;
 453         decoder->output_info.cbSize = decoder->wg_format.u.video.width
 454                 * decoder->wg_format.u.video.height * 2;
 455     }
 456
 457     return S_OK;
 458 }
 459
 460 static HRESULT WINAPI transform_SetOutputType(IMFTransform *iface, DWORD id, IMFMediaType *type, DWORD flags)
 461 {
 462     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 463     GUID major, subtype;
 464     UINT64 frame_size;
 465     HRESULT hr;
 466     ULONG i;
 467
 468     TRACE("iface %p, id %#lx, type %p, flags %#lx.\n", iface, id, type, flags);
 469
 470     if (!decoder->input_type)
 471         return MF_E_TRANSFORM_TYPE_NOT_SET;
 472
 473     if (FAILED(hr = IMFMediaType_GetGUID(type, &MF_MT_MAJOR_TYPE, &major)) ||
 474             FAILED(hr = IMFMediaType_GetGUID(type, &MF_MT_SUBTYPE, &subtype)))
 475         return hr;
 476
 477     if (!IsEqualGUID(&major, &MFMediaType_Video))
 478         return MF_E_INVALIDMEDIATYPE;
 479
 480     for (i = 0; i < ARRAY_SIZE(h264_decoder_output_types); ++i)
 481         if (IsEqualGUID(&subtype, h264_decoder_output_types[i]))
 482             break;
 483     if (i == ARRAY_SIZE(h264_decoder_output_types))
 484         return MF_E_INVALIDMEDIATYPE;
 485
 486     if (FAILED(hr = IMFMediaType_GetUINT64(type, &MF_MT_FRAME_SIZE, &frame_size))
 487             || (frame_size >> 32) != decoder->wg_format.u.video.width
 488             || (UINT32)frame_size != decoder->wg_format.u.video.height)
 489         return MF_E_INVALIDMEDIATYPE;
 490     if (flags & MFT_SET_TYPE_TEST_ONLY)
 491         return S_OK;
 492
 493     if (decoder->output_type)
 494         IMFMediaType_Release(decoder->output_type);
 495     IMFMediaType_AddRef((decoder->output_type = type));
 496
 497     if (decoder->wg_transform)
 498     {
 499         struct wg_format output_format;
 500         mf_media_type_to_wg_format(decoder->output_type, &output_format);
 501
 502         /* Don't force any specific size, H264 streams already have the metadata for it
 503          * and will generate a MF_E_TRANSFORM_STREAM_CHANGE result later.
 504          */
 505         output_format.u.video.width = 0;
 506         output_format.u.video.height = 0;
 507         output_format.u.video.fps_d = 0;
 508         output_format.u.video.fps_n = 0;
 509
 510         if (output_format.major_type == WG_MAJOR_TYPE_UNKNOWN
 511                 || !wg_transform_set_output_format(decoder->wg_transform, &output_format))
 512         {
 513             IMFMediaType_Release(decoder->output_type);
 514             decoder->output_type = NULL;
 515             return MF_E_INVALIDMEDIATYPE;
 516         }
 517     }
 518     else if (FAILED(hr = try_create_wg_transform(decoder)))
 519     {
 520         IMFMediaType_Release(decoder->output_type);
 521         decoder->output_type = NULL;
 522     }
 523
 524     return hr;
 525 }
 526
 527 static HRESULT WINAPI transform_GetInputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
 528 {
 529     FIXME("iface %p, id %#lx, type %p stub!\n", iface, id, type);
 530     return E_NOTIMPL;
 531 }
 532
 533 static HRESULT WINAPI transform_GetOutputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
 534 {
 535     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 536     HRESULT hr;
 537
 538     FIXME("iface %p, id %#lx, type %p stub!\n", iface, id, type);
 539
 540     if (!decoder->output_type)
 541         return MF_E_TRANSFORM_TYPE_NOT_SET;
 542
 543     if (FAILED(hr = MFCreateMediaType(type)))
 544         return hr;
 545
 546     return IMFMediaType_CopyAllItems(decoder->output_type, (IMFAttributes *)*type);
 547 }
 548
 549 static HRESULT WINAPI transform_GetInputStatus(IMFTransform *iface, DWORD id, DWORD *flags)
 550 {
 551     FIXME("iface %p, id %#lx, flags %p stub!\n", iface, id, flags);
 552     return E_NOTIMPL;
 553 }
 554
 555 static HRESULT WINAPI transform_GetOutputStatus(IMFTransform *iface, DWORD *flags)
 556 {
 557     FIXME("iface %p, flags %p stub!\n", iface, flags);
 558     return E_NOTIMPL;
 559 }
 560
 561 static HRESULT WINAPI transform_SetOutputBounds(IMFTransform *iface, LONGLONG lower, LONGLONG upper)
 562 {
 563     TRACE("iface %p, lower %I64d, upper %I64d.\n", iface, lower, upper);
 564     return E_NOTIMPL;
 565 }
 566
 567 static HRESULT WINAPI transform_ProcessEvent(IMFTransform *iface, DWORD id, IMFMediaEvent *event)
 568 {
 569     FIXME("iface %p, id %#lx, event %p stub!\n", iface, id, event);
 570     return E_NOTIMPL;
 571 }
 572
 573 static HRESULT WINAPI transform_ProcessMessage(IMFTransform *iface, MFT_MESSAGE_TYPE message, ULONG_PTR param)
 574 {
 575     FIXME("iface %p, message %#x, param %Ix stub!\n", iface, message, param);
 576     return S_OK;
 577 }
 578
 579 static HRESULT WINAPI transform_ProcessInput(IMFTransform *iface, DWORD id, IMFSample *sample, DWORD flags)
 580 {
 581     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 582
 583     TRACE("iface %p, id %#lx, sample %p, flags %#lx.\n", iface, id, sample, flags);
 584
 585     if (!decoder->wg_transform)
 586         return MF_E_TRANSFORM_TYPE_NOT_SET;
 587
 588     return wg_transform_push_mf(decoder->wg_transform, sample, decoder->wg_sample_queue);
 589 }
 590
 591 static HRESULT WINAPI transform_ProcessOutput(IMFTransform *iface, DWORD flags, DWORD count,
 592         MFT_OUTPUT_DATA_BUFFER *samples, DWORD *status)
 593 {
 594     struct h264_decoder *decoder = impl_from_IMFTransform(iface);
 595     struct wg_format wg_format;
 596     UINT32 sample_size;
 597     UINT64 frame_rate;
 598     GUID subtype;
 599     HRESULT hr;
 600
 601     TRACE("iface %p, flags %#lx, count %lu, samples %p, status %p.\n", iface, flags, count, samples, status);
 602
 603     if (count != 1)
 604         return E_INVALIDARG;
 605
 606     if (!decoder->wg_transform)
 607         return MF_E_TRANSFORM_TYPE_NOT_SET;
 608
 609     *status = samples->dwStatus = 0;
 610     if (!samples->pSample)
 611         return E_INVALIDARG;
 612
 613     if (FAILED(hr = IMFMediaType_GetGUID(decoder->output_type, &MF_MT_SUBTYPE, &subtype)))
 614         return hr;
 615     if (FAILED(hr = MFCalculateImageSize(&subtype, decoder->wg_format.u.video.width,
 616             decoder->wg_format.u.video.height, &sample_size)))
 617         return hr;
 618
 619     if (SUCCEEDED(hr = wg_transform_read_mf(decoder->wg_transform, samples->pSample,
 620             sample_size, &wg_format, &samples->dwStatus)))
 621         wg_sample_queue_flush(decoder->wg_sample_queue, false);
 622
 623     if (hr == MF_E_TRANSFORM_STREAM_CHANGE)
 624     {
 625         decoder->wg_format = wg_format;
 626         decoder->output_info.cbSize = ALIGN_SIZE(decoder->wg_format.u.video.width, 0xf)
 627                 * ALIGN_SIZE(decoder->wg_format.u.video.height, 0xf) * 2;
 628
 629         /* keep the frame rate that was requested, GStreamer doesn't provide any */
 630         if (SUCCEEDED(IMFMediaType_GetUINT64(decoder->output_type, &MF_MT_FRAME_RATE, &frame_rate)))
 631         {
 632             decoder->wg_format.u.video.fps_n = frame_rate >> 32;
 633             decoder->wg_format.u.video.fps_d = (UINT32)frame_rate;
 634         }
 635
 636         samples[0].dwStatus |= MFT_OUTPUT_DATA_BUFFER_FORMAT_CHANGE;
 637         *status |= MFT_OUTPUT_DATA_BUFFER_FORMAT_CHANGE;
 638     }
 639
 640     return hr;
 641 }
 642
 643 static const IMFTransformVtbl transform_vtbl =
 644 {
 645     transform_QueryInterface,
 646     transform_AddRef,
 647     transform_Release,
 648     transform_GetStreamLimits,
 649     transform_GetStreamCount,
 650     transform_GetStreamIDs,
 651     transform_GetInputStreamInfo,
 652     transform_GetOutputStreamInfo,
 653     transform_GetAttributes,
 654     transform_GetInputStreamAttributes,
 655     transform_GetOutputStreamAttributes,
 656     transform_DeleteInputStream,
 657     transform_AddInputStreams,
 658     transform_GetInputAvailableType,
 659     transform_GetOutputAvailableType,
 660     transform_SetInputType,
 661     transform_SetOutputType,
 662     transform_GetInputCurrentType,
 663     transform_GetOutputCurrentType,
 664     transform_GetInputStatus,
 665     transform_GetOutputStatus,
 666     transform_SetOutputBounds,
 667     transform_ProcessEvent,
 668     transform_ProcessMessage,
 669     transform_ProcessInput,
 670     transform_ProcessOutput,
 671 };
 672
 673 HRESULT h264_decoder_create(REFIID riid, void **ret)
 674 {
 675     static const struct wg_format output_format =
 676     {
 677         .major_type = WG_MAJOR_TYPE_VIDEO,
 678         .u.video =
 679         {
 680             .format = WG_VIDEO_FORMAT_I420,
 681             .width = 1920,
 682             .height = 1080,
 683         },
 684     };
 685     static const struct wg_format input_format = {.major_type = WG_MAJOR_TYPE_VIDEO_H264};
 686     struct wg_transform *transform;
 687     struct h264_decoder *decoder;
 688     HRESULT hr;
 689
 690     TRACE("riid %s, ret %p.\n", debugstr_guid(riid), ret);
 691
 692     if (!(transform = wg_transform_create(&input_format, &output_format)))
 693     {
 694         ERR_(winediag)("GStreamer doesn't support H.264 decoding, please install appropriate plugins\n");
 695         return E_FAIL;
 696     }
 697     wg_transform_destroy(transform);
 698
 699     if (!(decoder = calloc(1, sizeof(*decoder))))
 700         return E_OUTOFMEMORY;
 701
 702     decoder->IMFTransform_iface.lpVtbl = &transform_vtbl;
 703     decoder->refcount = 1;
 704     decoder->wg_format.u.video.format = WG_VIDEO_FORMAT_UNKNOWN;
 705     decoder->wg_format.u.video.width = 1920;
 706     decoder->wg_format.u.video.height = 1080;
 707     decoder->wg_format.u.video.fps_n = 30000;
 708     decoder->wg_format.u.video.fps_d = 1001;
 709
 710     decoder->input_info.dwFlags = MFT_INPUT_STREAM_WHOLE_SAMPLES | MFT_INPUT_STREAM_SINGLE_SAMPLE_PER_BUFFER
 711             | MFT_INPUT_STREAM_FIXED_SAMPLE_SIZE;
 712     decoder->input_info.cbSize = 0x1000;
 713     decoder->output_info.dwFlags = MFT_OUTPUT_STREAM_WHOLE_SAMPLES | MFT_OUTPUT_STREAM_SINGLE_SAMPLE_PER_BUFFER
 714             | MFT_OUTPUT_STREAM_FIXED_SAMPLE_SIZE;
 715     decoder->output_info.cbSize = 1920 * 1088 * 2;
 716
 717     if (FAILED(hr = MFCreateAttributes(&decoder->attributes, 16)))
 718         goto failed;
 719     if (FAILED(hr = IMFAttributes_SetUINT32(decoder->attributes, &MF_LOW_LATENCY, 0)))
 720         goto failed;
 721     if (FAILED(hr = MFCreateAttributes(&decoder->output_attributes, 0)))
 722         goto failed;
 723     if (FAILED(hr = wg_sample_queue_create(&decoder->wg_sample_queue)))
 724         goto failed;
 725
 726     *ret = &decoder->IMFTransform_iface;
 727     TRACE("Created decoder %p\n", *ret);
 728     return S_OK;
 729
 730 failed:
 731     if (decoder->output_attributes)
 732         IMFAttributes_Release(decoder->output_attributes);
 733     if (decoder->attributes)
 734         IMFAttributes_Release(decoder->attributes);
 735     free(decoder);
 736     return hr;
 737 }