text: /*
   * Copyright 2020 Nikolay Sivov
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #define COBJMACROS
  
  #include "evr.h"
  #include "d3d9.h"
  #include "dxva2api.h"
  #include "mfapi.h"
  #include "mferror.h"
  
  #include "evr_classes.h"
  
  #include "initguid.h"
  #include "evr9.h"
  #include "evcode.h"
  
  #include "wine/debug.h"
  
  WINE_DEFAULT_DEBUG_CHANNEL(evr);
  
  #define MAX_MIXER_INPUT_STREAMS 16
  
  struct input_stream
  {
      unsigned int id;
      IMFAttributes *attributes;
      IMFMediaType *media_type;
      MFVideoNormalizedRect rect;
      unsigned int zorder;
      IMFSample *sample;
      unsigned int sample_requested : 1;
  };
  
  struct rt_format
  {
      GUID device;
      D3DFORMAT format;
      IMFMediaType *media_type;
  };
  
  struct output_stream
  {
      IMFMediaType *media_type;
      struct rt_format *rt_formats;
      unsigned int rt_formats_count;
  };
  
  struct video_mixer
  {
      IMFTransform IMFTransform_iface;
      IMFVideoDeviceID IMFVideoDeviceID_iface;
      IMFTopologyServiceLookupClient IMFTopologyServiceLookupClient_iface;
      IMFVideoMixerControl2 IMFVideoMixerControl2_iface;
      IMFGetService IMFGetService_iface;
      IMFVideoMixerBitmap IMFVideoMixerBitmap_iface;
      IMFVideoPositionMapper IMFVideoPositionMapper_iface;
      IMFVideoProcessor IMFVideoProcessor_iface;
      IMFAttributes IMFAttributes_iface;
      IMFQualityAdvise IMFQualityAdvise_iface;
      IMFClockStateSink IMFClockStateSink_iface;
      IUnknown IUnknown_inner;
      IUnknown *outer_unk;
      LONG refcount;
  
      struct input_stream inputs[MAX_MIXER_INPUT_STREAMS];
      unsigned int input_ids[MAX_MIXER_INPUT_STREAMS];
      unsigned int input_count;
      struct output_stream output;
  
      IDirect3DDeviceManager9 *device_manager;
      IDirectXVideoProcessor *processor;
      HANDLE device_handle;
  
      IMediaEventSink *event_sink;
      IMFAttributes *attributes;
      IMFAttributes *internal_attributes;
      unsigned int mixing_flags;
      unsigned int is_streaming;
      COLORREF bkgnd_color;
      LONGLONG lower_bound;
      LONGLONG upper_bound;
      CRITICAL_SECTION cs;
  };
  
  static struct video_mixer *impl_from_IUnknown(IUnknown *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IUnknown_inner);
  }
  
  static struct video_mixer *impl_from_IMFTransform(IMFTransform *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IMFTransform_iface);
  }
  
  static struct video_mixer *impl_from_IMFVideoDeviceID(IMFVideoDeviceID *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IMFVideoDeviceID_iface);
  }
  
  static struct video_mixer *impl_from_IMFTopologyServiceLookupClient(IMFTopologyServiceLookupClient *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IMFTopologyServiceLookupClient_iface);
  }
  
  static struct video_mixer *impl_from_IMFVideoMixerControl2(IMFVideoMixerControl2 *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IMFVideoMixerControl2_iface);
  }
  
  static struct video_mixer *impl_from_IMFGetService(IMFGetService *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IMFGetService_iface);
  }
  
  static struct video_mixer *impl_from_IMFVideoMixerBitmap(IMFVideoMixerBitmap *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IMFVideoMixerBitmap_iface);
  }
  
  static struct video_mixer *impl_from_IMFVideoPositionMapper(IMFVideoPositionMapper *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IMFVideoPositionMapper_iface);
  }
  
  static struct video_mixer *impl_from_IMFVideoProcessor(IMFVideoProcessor *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IMFVideoProcessor_iface);
  }
  
  static struct video_mixer *impl_from_IMFAttributes(IMFAttributes *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IMFAttributes_iface);
  }
  
  static struct video_mixer *impl_from_IMFQualityAdvise(IMFQualityAdvise *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IMFQualityAdvise_iface);
  }
  
  static struct video_mixer *impl_from_IMFClockStateSink(IMFClockStateSink *iface)
  {
      return CONTAINING_RECORD(iface, struct video_mixer, IMFClockStateSink_iface);
  }
  
  static int __cdecl video_mixer_compare_input_id(const void *a, const void *b)
  {
      const unsigned int *key = a;
      const struct input_stream *input = b;
  
      if (*key > input->id) return 1;
      if (*key < input->id) return -1;
      return 0;
  }
  
  static HRESULT video_mixer_get_input(const struct video_mixer *mixer, unsigned int id, struct input_stream **stream)
  {
      *stream = bsearch(&id, mixer->inputs, mixer->input_count, sizeof(*mixer->inputs), video_mixer_compare_input_id);
      return *stream ? S_OK : MF_E_INVALIDSTREAMNUMBER;
  }
  
  static void video_mixer_init_input(struct input_stream *stream)
  {
      if (SUCCEEDED(MFCreateAttributes(&stream->attributes, 1)))
          IMFAttributes_SetUINT32(stream->attributes, &MF_SA_REQUIRED_SAMPLE_COUNT, 1);
      stream->rect.left = stream->rect.top = 0.0f;
      stream->rect.right = stream->rect.bottom = 1.0f;
  }
  
  static void video_mixer_clear_types(struct video_mixer *mixer)
  {
      unsigned int i;
  
      for (i = 0; i < mixer->input_count; ++i)
      {
          if (mixer->inputs[i].media_type)
              IMFMediaType_Release(mixer->inputs[i].media_type);
          mixer->inputs[i].media_type = NULL;
          if (mixer->inputs[i].sample)
              IMFSample_Release(mixer->inputs[i].sample);
          mixer->inputs[i].sample = NULL;
      }
      for (i = 0; i < mixer->output.rt_formats_count; ++i)
      {
          IMFMediaType_Release(mixer->output.rt_formats[i].media_type);
      }
      free(mixer->output.rt_formats);
      if (mixer->output.media_type)
          IMFMediaType_Release(mixer->output.media_type);
      mixer->output.media_type = NULL;
  }
  
  static HRESULT WINAPI video_mixer_inner_QueryInterface(IUnknown *iface, REFIID riid, void **obj)
  {
      struct video_mixer *mixer = impl_from_IUnknown(iface);
  
      TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), obj);
  
      if (IsEqualIID(riid, &IID_IUnknown))
      {
          *obj = iface;
      }
      else if (IsEqualIID(riid, &IID_IMFTransform))
      {
          *obj = &mixer->IMFTransform_iface;
      }
      else if (IsEqualIID(riid, &IID_IMFVideoDeviceID))
      {
          *obj = &mixer->IMFVideoDeviceID_iface;
      }
      else if (IsEqualIID(riid, &IID_IMFTopologyServiceLookupClient))
      {
          *obj = &mixer->IMFTopologyServiceLookupClient_iface;
      }
      else if (IsEqualIID(riid, &IID_IMFVideoMixerControl2) ||
              IsEqualIID(riid, &IID_IMFVideoMixerControl))
      {
          *obj = &mixer->IMFVideoMixerControl2_iface;
      }
      else if (IsEqualIID(riid, &IID_IMFGetService))
      {
          *obj = &mixer->IMFGetService_iface;
      }
      else if (IsEqualIID(riid, &IID_IMFVideoMixerBitmap))
      {
          *obj = &mixer->IMFVideoMixerBitmap_iface;
      }
      else if (IsEqualIID(riid, &IID_IMFVideoPositionMapper))
      {
          *obj = &mixer->IMFVideoPositionMapper_iface;
      }
      else if (IsEqualIID(riid, &IID_IMFVideoProcessor))
      {
          *obj = &mixer->IMFVideoProcessor_iface;
      }
      else if (IsEqualIID(riid, &IID_IMFAttributes))
      {
          *obj = &mixer->IMFAttributes_iface;
      }
      else if (IsEqualIID(riid, &IID_IMFQualityAdvise))
      {
          *obj = &mixer->IMFQualityAdvise_iface;
      }
      else if (IsEqualIID(riid, &IID_IMFClockStateSink))
      {
          *obj = &mixer->IMFClockStateSink_iface;
      }
      else
      {
          WARN("Unsupported interface %s.\n", debugstr_guid(riid));
          *obj = NULL;
          return E_NOINTERFACE;
      }
  
      IUnknown_AddRef((IUnknown *)*obj);
      return S_OK;
  }
  
  static ULONG WINAPI video_mixer_inner_AddRef(IUnknown *iface)
  {
      struct video_mixer *mixer = impl_from_IUnknown(iface);
      ULONG refcount = InterlockedIncrement(&mixer->refcount);
  
      TRACE("%p, refcount %u.\n", iface, refcount);
  
      return refcount;
  }
  
  static void video_mixer_release_device_manager(struct video_mixer *mixer)
  {
      if (mixer->processor)
          IDirectXVideoProcessor_Release(mixer->processor);
      if (mixer->device_manager)
      {
          IDirect3DDeviceManager9_CloseDeviceHandle(mixer->device_manager, mixer->device_handle);
          IDirect3DDeviceManager9_Release(mixer->device_manager);
      }
      mixer->device_handle = NULL;
      mixer->device_manager = NULL;
      mixer->processor = NULL;
  }
  
  static ULONG WINAPI video_mixer_inner_Release(IUnknown *iface)
  {
      struct video_mixer *mixer = impl_from_IUnknown(iface);
      ULONG refcount = InterlockedDecrement(&mixer->refcount);
      unsigned int i;
  
      TRACE("%p, refcount %u.\n", iface, refcount);
  
      if (!refcount)
      {
          for (i = 0; i < mixer->input_count; ++i)
          {
              if (mixer->inputs[i].attributes)
                  IMFAttributes_Release(mixer->inputs[i].attributes);
          }
          video_mixer_clear_types(mixer);
          video_mixer_release_device_manager(mixer);
          if (mixer->attributes)
              IMFAttributes_Release(mixer->attributes);
          if (mixer->internal_attributes)
              IMFAttributes_Release(mixer->internal_attributes);
          DeleteCriticalSection(&mixer->cs);
          free(mixer);
      }
  
      return refcount;
  }
  
  static const IUnknownVtbl video_mixer_inner_vtbl =
  {
      video_mixer_inner_QueryInterface,
      video_mixer_inner_AddRef,
      video_mixer_inner_Release,
  };
  
  static HRESULT WINAPI video_mixer_transform_QueryInterface(IMFTransform *iface, REFIID riid, void **obj)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      return IUnknown_QueryInterface(mixer->outer_unk, riid, obj);
  }
  
  static ULONG WINAPI video_mixer_transform_AddRef(IMFTransform *iface)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      return IUnknown_AddRef(mixer->outer_unk);
  }
  
  static ULONG WINAPI video_mixer_transform_Release(IMFTransform *iface)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      return IUnknown_Release(mixer->outer_unk);
  }
  
  static HRESULT WINAPI video_mixer_transform_GetStreamLimits(IMFTransform *iface, DWORD *input_minimum,
          DWORD *input_maximum, DWORD *output_minimum, DWORD *output_maximum)
  {
      TRACE("%p, %p, %p, %p, %p.\n", iface, input_minimum, input_maximum, output_minimum, output_maximum);
  
      *input_minimum = 1;
      *input_maximum = MAX_MIXER_INPUT_STREAMS;
      *output_minimum = 1;
      *output_maximum = 1;
  
      return S_OK;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetStreamCount(IMFTransform *iface, DWORD *inputs, DWORD *outputs)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
  
      TRACE("%p, %p, %p.\n", iface, inputs, outputs);
  
      EnterCriticalSection(&mixer->cs);
      if (inputs) *inputs = mixer->input_count;
      if (outputs) *outputs = 1;
      LeaveCriticalSection(&mixer->cs);
  
      return S_OK;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetStreamIDs(IMFTransform *iface, DWORD input_size, DWORD *inputs,
          DWORD output_size, DWORD *outputs)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      HRESULT hr = S_OK;
  
      TRACE("%p, %u, %p, %u, %p.\n", iface, input_size, inputs, output_size, outputs);
  
      EnterCriticalSection(&mixer->cs);
      if (mixer->input_count > input_size || !output_size)
          hr = MF_E_BUFFERTOOSMALL;
      else if (inputs)
          memcpy(inputs, mixer->input_ids, mixer->input_count * sizeof(*inputs));
      if (outputs) *outputs = 0;
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetInputStreamInfo(IMFTransform *iface, DWORD id, MFT_INPUT_STREAM_INFO *info)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      struct input_stream *input;
      HRESULT hr;
  
      TRACE("%p, %u, %p.\n", iface, id, info);
  
      EnterCriticalSection(&mixer->cs);
  
      if (SUCCEEDED(hr = video_mixer_get_input(mixer, id, &input)))
      {
          memset(info, 0, sizeof(*info));
          if (id)
              info->dwFlags |= MFT_INPUT_STREAM_REMOVABLE | MFT_INPUT_STREAM_OPTIONAL;
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetOutputStreamInfo(IMFTransform *iface, DWORD id, MFT_OUTPUT_STREAM_INFO *info)
  {
      TRACE("%p, %u, %p.\n", iface, id, info);
  
      if (id)
          return MF_E_INVALIDSTREAMNUMBER;
  
      memset(info, 0, sizeof(*info));
  
      return S_OK;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetAttributes(IMFTransform *iface, IMFAttributes **attributes)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
  
      TRACE("%p, %p.\n", iface, attributes);
  
      if (!attributes)
          return E_POINTER;
  
      *attributes = mixer->attributes;
      IMFAttributes_AddRef(*attributes);
  
      return S_OK;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetInputStreamAttributes(IMFTransform *iface, DWORD id,
          IMFAttributes **attributes)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      struct input_stream *input;
      HRESULT hr;
  
      TRACE("%p, %u, %p.\n", iface, id, attributes);
  
      EnterCriticalSection(&mixer->cs);
  
      if (SUCCEEDED(hr = video_mixer_get_input(mixer, id, &input)))
      {
          *attributes = input->attributes;
          if (*attributes)
              IMFAttributes_AddRef(*attributes);
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetOutputStreamAttributes(IMFTransform *iface, DWORD id,
          IMFAttributes **attributes)
  {
      TRACE("%p, %u, %p.\n", iface, id, attributes);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_transform_DeleteInputStream(IMFTransform *iface, DWORD id)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      struct input_stream *input;
      unsigned int idx;
      HRESULT hr;
  
      TRACE("%p, %u.\n", iface, id);
  
      if (!id)
          return MF_E_INVALIDSTREAMNUMBER;
  
      EnterCriticalSection(&mixer->cs);
  
      /* Can't delete reference stream. */
      if (SUCCEEDED(hr = video_mixer_get_input(mixer, id, &input)))
      {
          mixer->input_count--;
          idx = input - mixer->inputs;
          if (idx < mixer->input_count)
          {
              if (mixer->inputs[idx].attributes)
                  IMFAttributes_Release(mixer->inputs[idx].attributes);
              memmove(&mixer->inputs[idx], &mixer->inputs[idx + 1], (mixer->input_count - idx) * sizeof(*mixer->inputs));
              memmove(&mixer->input_ids[idx], &mixer->input_ids[idx + 1], (mixer->input_count - idx) *
                      sizeof(*mixer->input_ids));
          }
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static int __cdecl video_mixer_add_input_sort_compare(const void *a, const void *b)
  {
      const struct input_stream *left = a, *right = b;
      return left->id != right->id ? (left->id < right->id ? -1 : 1) : 0;
  };
  
  static HRESULT WINAPI video_mixer_transform_AddInputStreams(IMFTransform *iface, DWORD count, DWORD *ids)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      struct input_stream inputs[MAX_MIXER_INPUT_STREAMS] = { {0} };
      struct input_stream *input;
      unsigned int i, len;
      HRESULT hr = S_OK;
  
      TRACE("%p, %u, %p.\n", iface, count, ids);
  
      if (!ids)
          return E_POINTER;
  
      EnterCriticalSection(&mixer->cs);
      if (count > ARRAY_SIZE(mixer->inputs) - mixer->input_count)
          hr = E_INVALIDARG;
      else
      {
          /* Test for collisions. */
          memcpy(inputs, mixer->inputs, mixer->input_count * sizeof(*inputs));
          for (i = 0; i < count; ++i)
              inputs[i + mixer->input_count].id = ids[i];
  
          len = mixer->input_count + count;
  
          qsort(inputs, len, sizeof(*inputs), video_mixer_add_input_sort_compare);
  
          for (i = 1; i < len; ++i)
          {
              if (inputs[i - 1].id == inputs[i].id)
              {
                  hr = E_INVALIDARG;
                  break;
              }
          }
  
          if (SUCCEEDED(hr))
          {
              unsigned int zorder = mixer->input_count;
  
              for (i = 0; i < count; ++i)
              {
                  if ((input = bsearch(&ids[i], inputs, len, sizeof(*inputs), video_mixer_compare_input_id)))
                      video_mixer_init_input(input);
              }
              memcpy(&mixer->input_ids[mixer->input_count], ids, count * sizeof(*ids));
              memcpy(mixer->inputs, inputs, len * sizeof(*inputs));
              mixer->input_count += count;
  
              for (i = 0; i < count; ++i)
              {
                  if (SUCCEEDED(video_mixer_get_input(mixer, ids[i], &input)))
                      input->zorder = zorder;
                  zorder++;
              }
          }
      }
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetInputAvailableType(IMFTransform *iface, DWORD id, DWORD index,
          IMFMediaType **type)
  {
      TRACE("%p, %u, %u, %p.\n", iface, id, index, type);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetOutputAvailableType(IMFTransform *iface, DWORD id, DWORD index,
          IMFMediaType **type)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      HRESULT hr = S_OK;
  
      TRACE("%p, %u, %u, %p.\n", iface, id, index, type);
  
      if (id)
          return MF_E_INVALIDSTREAMNUMBER;
  
      EnterCriticalSection(&mixer->cs);
  
      if (!mixer->inputs[0].media_type)
          hr = MF_E_TRANSFORM_TYPE_NOT_SET;
      else if (index >= mixer->output.rt_formats_count)
          hr = MF_E_NO_MORE_TYPES;
      else
      {
          if (SUCCEEDED(hr = MFCreateMediaType(type)))
              hr = IMFMediaType_CopyAllItems(mixer->output.rt_formats[index].media_type, (IMFAttributes *)*type);
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT video_mixer_init_dxva_videodesc(IMFMediaType *media_type, DXVA2_VideoDesc *video_desc)
  {
      const MFVIDEOFORMAT *video_format;
      IMFVideoMediaType *video_type;
      BOOL is_compressed = TRUE;
      HRESULT hr = S_OK;
  
      if (FAILED(IMFMediaType_QueryInterface(media_type, &IID_IMFVideoMediaType, (void **)&video_type)))
          return MF_E_INVALIDMEDIATYPE;
  
      video_format = IMFVideoMediaType_GetVideoFormat(video_type);
      IMFVideoMediaType_IsCompressedFormat(video_type, &is_compressed);
  
      if (!video_format || !video_format->videoInfo.dwWidth || !video_format->videoInfo.dwHeight || is_compressed)
      {
          hr = MF_E_INVALIDMEDIATYPE;
          goto done;
      }
  
      memset(video_desc, 0, sizeof(*video_desc));
      video_desc->SampleWidth = video_format->videoInfo.dwWidth;
      video_desc->SampleHeight = video_format->videoInfo.dwHeight;
      video_desc->Format = video_format->surfaceInfo.Format;
  
  done:
      IMFVideoMediaType_Release(video_type);
  
      return hr;
  }
  
  static void video_mixer_append_rt_format(struct rt_format *rt_formats, unsigned int *count,
          const GUID *device, D3DFORMAT format)
  {
      unsigned int i;
  
      for (i = 0; i < *count; ++i)
      {
          if (rt_formats[i].format == format) return;
      }
  
      rt_formats[*count].format = format;
      rt_formats[*count].device = *device;
      *count += 1;
  }
  
  static unsigned int video_mixer_get_interlace_mode_from_video_desc(const DXVA2_VideoDesc *video_desc)
  {
      switch (video_desc->SampleFormat.SampleFormat)
      {
          case DXVA2_SampleFieldInterleavedEvenFirst:
              return MFVideoInterlace_FieldInterleavedUpperFirst;
          case DXVA2_SampleFieldInterleavedOddFirst:
              return MFVideoInterlace_FieldInterleavedLowerFirst;
          case DXVA2_SampleFieldSingleEven:
              return MFVideoInterlace_FieldSingleUpper;
          case DXVA2_SampleFieldSingleOdd:
              return MFVideoInterlace_FieldSingleLower;
          default:
              return MFVideoInterlace_Progressive;
      }
  }
  
  static HRESULT video_mixer_collect_output_types(struct video_mixer *mixer, const DXVA2_VideoDesc *video_desc,
          IMFMediaType *media_type, IDirectXVideoProcessorService *service, unsigned int device_count,
          const GUID *devices, unsigned int flags)
  {
      unsigned int i, j, format_count, count, interlace_mode;
      struct rt_format *rt_formats = NULL, *ptr;
      HRESULT hr = MF_E_INVALIDMEDIATYPE;
      MFVideoArea aperture;
      D3DFORMAT *formats;
      GUID subtype;
  
      count = 0;
      for (i = 0; i < device_count; ++i)
      {
          if (SUCCEEDED(IDirectXVideoProcessorService_GetVideoProcessorRenderTargets(service, &devices[i], video_desc,
                &format_count, &formats)))
          {
              if (!(ptr = realloc(rt_formats, (count + format_count) * sizeof(*rt_formats))))
              {
                  hr = E_OUTOFMEMORY;
                  count = 0;
                  CoTaskMemFree(formats);
                  break;
              }
              rt_formats = ptr;
  
              for (j = 0; j < format_count; ++j)
                  video_mixer_append_rt_format(rt_formats, &count, &devices[i], formats[j]);
  
              CoTaskMemFree(formats);
          }
      }
  
      if (count && !(flags & MFT_SET_TYPE_TEST_ONLY))
      {
          if (!(mixer->output.rt_formats = calloc(count, sizeof(*mixer->output.rt_formats))))
          {
              free(rt_formats);
              return E_OUTOFMEMORY;
          }
  
          memcpy(&subtype, &MFVideoFormat_Base, sizeof(subtype));
          memset(&aperture, 0, sizeof(aperture));
          aperture.Area.cx = video_desc->SampleWidth;
          aperture.Area.cy = video_desc->SampleHeight;
          interlace_mode = video_mixer_get_interlace_mode_from_video_desc(video_desc);
          for (i = 0; i < count; ++i)
          {
              IMFMediaType *rt_media_type;
  
              subtype.Data1 = rt_formats[i].format;
              mixer->output.rt_formats[i] = rt_formats[i];
  
              MFCreateMediaType(&rt_media_type);
              IMFMediaType_CopyAllItems(media_type, (IMFAttributes *)rt_media_type);
              IMFMediaType_SetGUID(rt_media_type, &MF_MT_SUBTYPE, &subtype);
              IMFMediaType_SetBlob(rt_media_type, &MF_MT_GEOMETRIC_APERTURE, (const UINT8 *)&aperture, sizeof(aperture));
              IMFMediaType_SetBlob(rt_media_type, &MF_MT_MINIMUM_DISPLAY_APERTURE, (const UINT8 *)&aperture, sizeof(aperture));
              IMFMediaType_SetUINT32(rt_media_type, &MF_MT_INTERLACE_MODE, interlace_mode);
  
              mixer->output.rt_formats[i].media_type = rt_media_type;
          }
          mixer->output.rt_formats_count = count;
      }
  
      free(rt_formats);
  
      return count ? S_OK : hr;
  }
  
  static HRESULT video_mixer_open_device_handle(struct video_mixer *mixer)
  {
      IDirect3DDeviceManager9_CloseDeviceHandle(mixer->device_manager, mixer->device_handle);
      mixer->device_handle = NULL;
      return IDirect3DDeviceManager9_OpenDeviceHandle(mixer->device_manager, &mixer->device_handle);
  }
  
  static HRESULT video_mixer_get_processor_service(struct video_mixer *mixer, IDirectXVideoProcessorService **service)
  {
      HRESULT hr;
  
      if (!mixer->device_handle)
      {
          if (FAILED(hr = IDirect3DDeviceManager9_OpenDeviceHandle(mixer->device_manager, &mixer->device_handle)))
              return hr;
      }
  
      for (;;)
      {
          hr = IDirect3DDeviceManager9_GetVideoService(mixer->device_manager, mixer->device_handle,
                  &IID_IDirectXVideoProcessorService, (void **)service);
          if (hr == DXVA2_E_NEW_VIDEO_DEVICE)
          {
              if (SUCCEEDED(hr = video_mixer_open_device_handle(mixer)))
                  continue;
          }
          break;
      }
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_SetInputType(IMFTransform *iface, DWORD id, IMFMediaType *media_type, DWORD flags)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      IDirectXVideoProcessorService *service;
      DXVA2_VideoDesc video_desc;
      HRESULT hr = E_NOTIMPL;
      unsigned int count;
      GUID *guids;
  
      TRACE("%p, %u, %p, %#x.\n", iface, id, media_type, flags);
  
      EnterCriticalSection(&mixer->cs);
  
      if (!(flags & MFT_SET_TYPE_TEST_ONLY))
          video_mixer_clear_types(mixer);
  
      if (!mixer->device_manager)
          hr = MF_E_NOT_INITIALIZED;
      else
      {
          if (SUCCEEDED(hr = video_mixer_get_processor_service(mixer, &service)))
          {
              if (SUCCEEDED(hr = video_mixer_init_dxva_videodesc(media_type, &video_desc)))
              {
                  if (!id)
                  {
                      if (SUCCEEDED(hr = IDirectXVideoProcessorService_GetVideoProcessorDeviceGuids(service, &video_desc,
                              &count, &guids)))
                      {
                          if (SUCCEEDED(hr = video_mixer_collect_output_types(mixer, &video_desc, media_type,
                                  service, count, guids, flags)) && !(flags & MFT_SET_TYPE_TEST_ONLY))
                          {
                              if (mixer->inputs[0].media_type)
                                  IMFMediaType_Release(mixer->inputs[0].media_type);
                              mixer->inputs[0].media_type = media_type;
                              IMFMediaType_AddRef(mixer->inputs[0].media_type);
                          }
                          CoTaskMemFree(guids);
                      }
                  }
                  else
                  {
                      FIXME("Unimplemented for substreams.\n");
                      hr = E_NOTIMPL;
                  }
              }
              IDirectXVideoProcessorService_Release(service);
          }
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_SetOutputType(IMFTransform *iface, DWORD id, IMFMediaType *type, DWORD flags)
  {
      const unsigned int equality_flags = MF_MEDIATYPE_EQUAL_MAJOR_TYPES | MF_MEDIATYPE_EQUAL_FORMAT_TYPES;
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      HRESULT hr = MF_E_INVALIDMEDIATYPE;
      unsigned int i, compare_flags;
      BOOL is_compressed = TRUE;
  
      TRACE("%p, %u, %p, %#x.\n", iface, id, type, flags);
  
      if (id)
          return MF_E_INVALIDSTREAMNUMBER;
  
      if (!type)
          return E_INVALIDARG;
  
      if (FAILED(IMFMediaType_IsCompressedFormat(type, &is_compressed)) || is_compressed)
          return MF_E_INVALIDMEDIATYPE;
  
      EnterCriticalSection(&mixer->cs);
  
      for (i = 0; i < mixer->output.rt_formats_count; ++i)
      {
          compare_flags = 0;
          if (FAILED(IMFMediaType_IsEqual(type, mixer->output.rt_formats[i].media_type, &compare_flags)))
              continue;
  
          if ((compare_flags & equality_flags) == equality_flags)
          {
              hr = S_OK;
              break;
          }
      }
  
      if (SUCCEEDED(hr) && !(flags & MFT_SET_TYPE_TEST_ONLY))
      {
          IDirectXVideoProcessorService *service;
  
          if (SUCCEEDED(hr = video_mixer_get_processor_service(mixer, &service)))
          {
              DXVA2_VideoDesc video_desc;
              GUID subtype = { 0 };
              D3DFORMAT rt_format;
  
              if (mixer->processor)
                  IDirectXVideoProcessor_Release(mixer->processor);
              mixer->processor = NULL;
  
              video_mixer_init_dxva_videodesc(mixer->inputs[0].media_type, &video_desc);
              IMFMediaType_GetGUID(type, &MF_MT_SUBTYPE, &subtype);
              rt_format = subtype.Data1;
  
              if (SUCCEEDED(hr = IDirectXVideoProcessorService_CreateVideoProcessor(service, &mixer->output.rt_formats[i].device,
                      &video_desc, rt_format, MAX_MIXER_INPUT_STREAMS, &mixer->processor)))
              {
                  if (mixer->output.media_type)
                      IMFMediaType_Release(mixer->output.media_type);
                  mixer->output.media_type = type;
                  IMFMediaType_AddRef(mixer->output.media_type);
              }
  
              IDirectXVideoProcessorService_Release(service);
          }
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetInputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      struct input_stream *stream;
      HRESULT hr;
  
      TRACE("%p, %u, %p.\n", iface, id, type);
  
      EnterCriticalSection(&mixer->cs);
  
      if (SUCCEEDED(hr = video_mixer_get_input(mixer, id, &stream)))
      {
          if (!stream->media_type)
              hr = MF_E_TRANSFORM_TYPE_NOT_SET;
          else
          {
              *type = stream->media_type;
              IMFMediaType_AddRef(*type);
          }
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetOutputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      HRESULT hr = S_OK;
  
      TRACE("%p, %u, %p.\n", iface, id, type);
  
      if (id)
          return MF_E_INVALIDSTREAMNUMBER;
  
      EnterCriticalSection(&mixer->cs);
  
      if (!mixer->output.media_type)
          hr = MF_E_TRANSFORM_TYPE_NOT_SET;
      else
      {
          *type = mixer->output.media_type;
          IMFMediaType_AddRef(*type);
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetInputStatus(IMFTransform *iface, DWORD id, DWORD *status)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      struct input_stream *stream;
      HRESULT hr;
  
      TRACE("%p, %u, %p.\n", iface, id, status);
  
      if (!status)
          return E_POINTER;
  
      EnterCriticalSection(&mixer->cs);
  
      if (!mixer->output.media_type)
          hr = MF_E_TRANSFORM_TYPE_NOT_SET;
      else if (SUCCEEDED(hr = video_mixer_get_input(mixer, id, &stream)))
      {
          *status = stream->sample ? 0 : MFT_INPUT_STATUS_ACCEPT_DATA;
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_GetOutputStatus(IMFTransform *iface, DWORD *status)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      HRESULT hr = S_OK;
      unsigned int i;
  
      TRACE("%p, %p.\n", iface, status);
  
      if (!status)
          return E_POINTER;
  
      EnterCriticalSection(&mixer->cs);
  
      if (!mixer->output.media_type)
          hr = MF_E_TRANSFORM_TYPE_NOT_SET;
      else
      {
          *status = MFT_OUTPUT_STATUS_SAMPLE_READY;
          for (i = 0; i < mixer->input_count; ++i)
          {
              if (!mixer->inputs[i].sample)
              {
                  *status = 0;
                  break;
              }
          }
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_SetOutputBounds(IMFTransform *iface, LONGLONG lower, LONGLONG upper)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
  
      TRACE("%p, %s, %s.\n", iface, wine_dbgstr_longlong(lower), wine_dbgstr_longlong(upper));
  
      EnterCriticalSection(&mixer->cs);
  
      mixer->lower_bound = lower;
      mixer->upper_bound = upper;
  
      LeaveCriticalSection(&mixer->cs);
  
      return S_OK;
  }
  
  static HRESULT WINAPI video_mixer_transform_ProcessEvent(IMFTransform *iface, DWORD id, IMFMediaEvent *event)
  {
      FIXME("%p, %u, %p.\n", iface, id, event);
  
      return E_NOTIMPL;
  }
  
  static void video_mixer_request_sample(struct video_mixer *mixer, unsigned int idx)
  {
      if (!mixer->event_sink || mixer->inputs[idx].sample_requested)
          return;
  
      IMediaEventSink_Notify(mixer->event_sink, EC_SAMPLE_NEEDED, idx, 0);
      mixer->inputs[idx].sample_requested = 1;
  }
  
  static HRESULT WINAPI video_mixer_transform_ProcessMessage(IMFTransform *iface, MFT_MESSAGE_TYPE message, ULONG_PTR param)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      HRESULT hr = S_OK;
      unsigned int i;
  
      TRACE("%p, %#x, %#lx.\n", iface, message, param);
  
      switch (message)
      {
          case MFT_MESSAGE_SET_D3D_MANAGER:
  
              EnterCriticalSection(&mixer->cs);
  
              video_mixer_release_device_manager(mixer);
              if (param)
                  hr = IUnknown_QueryInterface((IUnknown *)param, &IID_IDirect3DDeviceManager9, (void **)&mixer->device_manager);
  
              LeaveCriticalSection(&mixer->cs);
  
              break;
  
          case MFT_MESSAGE_COMMAND_FLUSH:
  
              EnterCriticalSection(&mixer->cs);
  
              for (i = 0; i < mixer->input_count; ++i)
              {
                  if (mixer->inputs[i].sample)
                  {
                      IMFSample_Release(mixer->inputs[i].sample);
                      mixer->inputs[i].sample = NULL;
                      mixer->inputs[i].sample_requested = 0;
                  }
              }
  
              LeaveCriticalSection(&mixer->cs);
  
              break;
  
          case MFT_MESSAGE_NOTIFY_BEGIN_STREAMING:
          case MFT_MESSAGE_NOTIFY_END_STREAMING:
  
              EnterCriticalSection(&mixer->cs);
  
              if (!mixer->is_streaming)
              {
                  for (i = 0; i < mixer->input_count; ++i)
                      video_mixer_request_sample(mixer, i);
              }
  
              mixer->is_streaming = message == MFT_MESSAGE_NOTIFY_BEGIN_STREAMING;
  
              LeaveCriticalSection(&mixer->cs);
  
              break;
  
          case MFT_MESSAGE_COMMAND_DRAIN:
              break;
  
          default:
              WARN("Message not handled %d.\n", message);
              hr = E_NOTIMPL;
      }
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_ProcessInput(IMFTransform *iface, DWORD id, IMFSample *sample, DWORD flags)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      struct input_stream *input;
      HRESULT hr;
  
      TRACE("%p, %u, %p, %#x.\n", iface, id, sample, flags);
  
      if (!sample)
          return E_POINTER;
  
      EnterCriticalSection(&mixer->cs);
  
      if (SUCCEEDED(hr = video_mixer_get_input(mixer, id, &input)))
      {
          if (!input->media_type || !mixer->output.media_type)
              hr = MF_E_TRANSFORM_TYPE_NOT_SET;
          else if (input->sample)
              hr = MF_E_NOTACCEPTING;
          else
          {
              mixer->is_streaming = 1;
              input->sample_requested = 0;
              input->sample = sample;
              IMFSample_AddRef(input->sample);
          }
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT video_mixer_get_sample_surface(IMFSample *sample, IDirect3DSurface9 **surface)
  {
      IMFMediaBuffer *buffer;
      IMFGetService *gs;
      HRESULT hr;
  
      if (FAILED(hr = IMFSample_GetBufferByIndex(sample, 0, &buffer)))
          return hr;
  
      hr = IMFMediaBuffer_QueryInterface(buffer, &IID_IMFGetService, (void **)&gs);
      IMFMediaBuffer_Release(buffer);
      if (FAILED(hr))
          return hr;
  
      hr = IMFGetService_GetService(gs, &MR_BUFFER_SERVICE, &IID_IDirect3DSurface9, (void **)surface);
      IMFGetService_Release(gs);
      return hr;
  }
  
  static HRESULT video_mixer_get_d3d_device(struct video_mixer *mixer, IDirect3DDevice9 **device)
  {
      HRESULT hr;
  
      for (;;)
      {
          hr = IDirect3DDeviceManager9_LockDevice(mixer->device_manager, mixer->device_handle,
                  device, TRUE);
          if (hr == DXVA2_E_NEW_VIDEO_DEVICE)
          {
              if (SUCCEEDED(hr = video_mixer_open_device_handle(mixer)))
                  continue;
          }
          break;
      }
  
      return hr;
  }
  
  static void video_mixer_scale_rect(RECT *rect, unsigned int width, unsigned int height,
          const MFVideoNormalizedRect *scale)
  {
      if (rect->left == 0.0f && rect->top == 0.0f && rect->right == 1.0f && rect->bottom == 1.0f)
      {
          SetRect(rect, 0, 0, width, height);
      }
      else
      {
          rect->left = width * scale->left;
          rect->right = width * scale->right;
          rect->top = height * scale->top;
          rect->bottom = height * scale->bottom;
      }
  }
  
  static void video_mixer_render(struct video_mixer *mixer, IDirect3DSurface9 *rt)
  {
      DXVA2_VideoSample samples[1] = {{ 0 }};
      DXVA2_VideoProcessBltParams params = { 0 };
      MFVideoNormalizedRect zoom_rect;
      struct input_stream *stream;
      IDirect3DSurface9 *surface;
      D3DSURFACE_DESC desc;
      HRESULT hr;
  
      IDirect3DSurface9_GetDesc(rt, &desc);
  
      if (FAILED(IMFAttributes_GetBlob(mixer->attributes, &VIDEO_ZOOM_RECT, (UINT8 *)&zoom_rect,
              sizeof(zoom_rect), NULL)))
      {
          zoom_rect.left = zoom_rect.top = 0.0f;
          zoom_rect.right = zoom_rect.bottom = 1.0f;
      }
  
      video_mixer_scale_rect(&params.TargetRect, desc.Width, desc.Height, &zoom_rect);
  
      /* FIXME: for now only handle reference stream. */
  
      video_mixer_get_input(mixer, 0, &stream);
  
      if (FAILED(hr = video_mixer_get_sample_surface(stream->sample, &surface)))
      {
          WARN("Failed to get source surface, hr %#x.\n", hr);
          return;
      }
  
      IDirect3DSurface9_GetDesc(surface, &desc);
  
      samples[0].SrcSurface = surface;
      SetRect(&samples[0].SrcRect, 0, 0, desc.Width, desc.Height);
      video_mixer_scale_rect(&samples[0].DstRect, desc.Width, desc.Height, &stream->rect);
  
      if (FAILED(hr = IDirectXVideoProcessor_VideoProcessBlt(mixer->processor, rt, &params, samples, 1, NULL)))
          WARN("Failed to process samples, hr %#x.\n", hr);
  
      IDirect3DSurface9_Release(surface);
  }
  
  static HRESULT video_mixer_get_sample_desired_time(IMFSample *sample, LONGLONG *timestamp, LONGLONG *duration)
  {
      IMFDesiredSample *desired;
      HRESULT hr;
  
      if (SUCCEEDED(hr = IMFSample_QueryInterface(sample, &IID_IMFDesiredSample, (void **)&desired)))
      {
          hr = IMFDesiredSample_GetDesiredSampleTimeAndDuration(desired, timestamp, duration);
          IMFDesiredSample_Release(desired);
      }
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_transform_ProcessOutput(IMFTransform *iface, DWORD flags, DWORD count,
          MFT_OUTPUT_DATA_BUFFER *buffers, DWORD *status)
  {
      struct video_mixer *mixer = impl_from_IMFTransform(iface);
      LONGLONG timestamp, duration;
      IDirect3DSurface9 *surface;
      IDirect3DDevice9 *device;
      unsigned int i;
      HRESULT hr;
  
      TRACE("%p, %#x, %u, %p, %p.\n", iface, flags, count, buffers, status);
  
      if (!buffers || !count || count > 1 || !buffers->pSample)
          return E_INVALIDARG;
  
      if (buffers->dwStreamID)
          return MF_E_INVALIDSTREAMNUMBER;
  
      *status = 0;
  
      EnterCriticalSection(&mixer->cs);
  
      if (SUCCEEDED(hr = video_mixer_get_sample_surface(buffers->pSample, &surface)))
      {
          if (mixer->is_streaming)
          {
              for (i = 0; i < mixer->input_count; ++i)
              {
                  if (!mixer->inputs[i].sample)
                  {
                      hr = MF_E_TRANSFORM_NEED_MORE_INPUT;
                      break;
                  }
              }
  
              if (SUCCEEDED(hr))
              {
                  video_mixer_render(mixer, surface);
  
                  timestamp = duration = 0;
                  if (SUCCEEDED(IMFSample_GetSampleTime(mixer->inputs[0].sample, &timestamp)))
                  {
                      IMFSample_SetSampleTime(buffers->pSample, timestamp);
  
                      IMFSample_GetSampleDuration(mixer->inputs[0].sample, &duration);
                      IMFSample_SetSampleDuration(buffers->pSample, duration);
                  }
              }
  
              if (SUCCEEDED(hr))
              {
                  for (i = 0; i < mixer->input_count; ++i)
                  {
                      if (mixer->inputs[i].sample)
                          IMFSample_Release(mixer->inputs[i].sample);
                      mixer->inputs[i].sample = NULL;
                      video_mixer_request_sample(mixer, i);
                  }
              }
          }
          else
          {
              if (SUCCEEDED(video_mixer_get_sample_desired_time(buffers->pSample, &timestamp, &duration)))
              {
                  if (SUCCEEDED(hr = video_mixer_get_d3d_device(mixer, &device)))
                  {
                      IDirect3DDevice9_ColorFill(device, surface, NULL, 0);
                      IDirect3DDeviceManager9_UnlockDevice(mixer->device_manager, mixer->device_handle, FALSE);
                      IDirect3DDevice9_Release(device);
                  }
              }
              else
                  hr = MF_E_TRANSFORM_NEED_MORE_INPUT;
          }
          IDirect3DSurface9_Release(surface);
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static const IMFTransformVtbl video_mixer_transform_vtbl =
  {
      video_mixer_transform_QueryInterface,
      video_mixer_transform_AddRef,
      video_mixer_transform_Release,
      video_mixer_transform_GetStreamLimits,
      video_mixer_transform_GetStreamCount,
      video_mixer_transform_GetStreamIDs,
      video_mixer_transform_GetInputStreamInfo,
      video_mixer_transform_GetOutputStreamInfo,
      video_mixer_transform_GetAttributes,
      video_mixer_transform_GetInputStreamAttributes,
      video_mixer_transform_GetOutputStreamAttributes,
      video_mixer_transform_DeleteInputStream,
      video_mixer_transform_AddInputStreams,
      video_mixer_transform_GetInputAvailableType,
      video_mixer_transform_GetOutputAvailableType,
      video_mixer_transform_SetInputType,
      video_mixer_transform_SetOutputType,
      video_mixer_transform_GetInputCurrentType,
      video_mixer_transform_GetOutputCurrentType,
      video_mixer_transform_GetInputStatus,
      video_mixer_transform_GetOutputStatus,
      video_mixer_transform_SetOutputBounds,
      video_mixer_transform_ProcessEvent,
      video_mixer_transform_ProcessMessage,
      video_mixer_transform_ProcessInput,
      video_mixer_transform_ProcessOutput,
  };
  
  static HRESULT WINAPI video_mixer_device_id_QueryInterface(IMFVideoDeviceID *iface, REFIID riid, void **obj)
  {
      struct video_mixer *mixer = impl_from_IMFVideoDeviceID(iface);
      return IMFTransform_QueryInterface(&mixer->IMFTransform_iface, riid, obj);
  }
  
  static ULONG WINAPI video_mixer_device_id_AddRef(IMFVideoDeviceID *iface)
  {
      struct video_mixer *mixer = impl_from_IMFVideoDeviceID(iface);
      return IMFTransform_AddRef(&mixer->IMFTransform_iface);
  }
  
  static ULONG WINAPI video_mixer_device_id_Release(IMFVideoDeviceID *iface)
  {
      struct video_mixer *mixer = impl_from_IMFVideoDeviceID(iface);
      return IMFTransform_Release(&mixer->IMFTransform_iface);
  }
  
  static HRESULT WINAPI video_mixer_device_id_GetDeviceID(IMFVideoDeviceID *iface, IID *device_id)
  {
      TRACE("%p, %p.\n", iface, device_id);
  
      if (!device_id)
          return E_POINTER;
  
      memcpy(device_id, &IID_IDirect3DDevice9, sizeof(*device_id));
  
      return S_OK;
  }
  
  static const IMFVideoDeviceIDVtbl video_mixer_device_id_vtbl =
  {
      video_mixer_device_id_QueryInterface,
      video_mixer_device_id_AddRef,
      video_mixer_device_id_Release,
      video_mixer_device_id_GetDeviceID,
  };
  
  static HRESULT WINAPI video_mixer_service_client_QueryInterface(IMFTopologyServiceLookupClient *iface,
          REFIID riid, void **obj)
  {
      struct video_mixer *mixer = impl_from_IMFTopologyServiceLookupClient(iface);
      return IMFTransform_QueryInterface(&mixer->IMFTransform_iface, riid, obj);
  }
  
  static ULONG WINAPI video_mixer_service_client_AddRef(IMFTopologyServiceLookupClient *iface)
  {
      struct video_mixer *mixer = impl_from_IMFTopologyServiceLookupClient(iface);
      return IMFTransform_AddRef(&mixer->IMFTransform_iface);
  }
  
  static ULONG WINAPI video_mixer_service_client_Release(IMFTopologyServiceLookupClient *iface)
  {
      struct video_mixer *mixer = impl_from_IMFTopologyServiceLookupClient(iface);
      return IMFTransform_Release(&mixer->IMFTransform_iface);
  }
  
  static HRESULT WINAPI video_mixer_service_client_InitServicePointers(IMFTopologyServiceLookupClient *iface,
          IMFTopologyServiceLookup *service_lookup)
  {
      struct video_mixer *mixer = impl_from_IMFTopologyServiceLookupClient(iface);
      unsigned int count;
      HRESULT hr;
  
      TRACE("%p, %p.\n", iface, service_lookup);
  
      if (!service_lookup)
          return E_POINTER;
  
      EnterCriticalSection(&mixer->cs);
  
      count = 1;
      if (FAILED(hr = IMFTopologyServiceLookup_LookupService(service_lookup, MF_SERVICE_LOOKUP_GLOBAL, 0,
              &MR_VIDEO_RENDER_SERVICE, &IID_IMediaEventSink, (void **)&mixer->event_sink, &count)))
      {
          WARN("Failed to get renderer event sink, hr %#x.\n", hr);
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_service_client_ReleaseServicePointers(IMFTopologyServiceLookupClient *iface)
  {
      struct video_mixer *mixer = impl_from_IMFTopologyServiceLookupClient(iface);
  
      TRACE("%p.\n", iface);
  
      EnterCriticalSection(&mixer->cs);
  
      if (mixer->event_sink)
          IMediaEventSink_Release(mixer->event_sink);
      mixer->event_sink = NULL;
  
      LeaveCriticalSection(&mixer->cs);
  
      return S_OK;
  }
  
  static const IMFTopologyServiceLookupClientVtbl video_mixer_service_client_vtbl =
  {
      video_mixer_service_client_QueryInterface,
      video_mixer_service_client_AddRef,
      video_mixer_service_client_Release,
      video_mixer_service_client_InitServicePointers,
      video_mixer_service_client_ReleaseServicePointers,
  };
  
  static HRESULT WINAPI video_mixer_control_QueryInterface(IMFVideoMixerControl2 *iface, REFIID riid, void **obj)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerControl2(iface);
      return IMFTransform_QueryInterface(&mixer->IMFTransform_iface, riid, obj);
  }
  
  static ULONG WINAPI video_mixer_control_AddRef(IMFVideoMixerControl2 *iface)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerControl2(iface);
      return IMFTransform_AddRef(&mixer->IMFTransform_iface);
  }
  
  static ULONG WINAPI video_mixer_control_Release(IMFVideoMixerControl2 *iface)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerControl2(iface);
      return IMFTransform_Release(&mixer->IMFTransform_iface);
  }
  
  static HRESULT WINAPI video_mixer_control_SetStreamZOrder(IMFVideoMixerControl2 *iface, DWORD id, DWORD zorder)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerControl2(iface);
      struct input_stream *stream;
      HRESULT hr;
  
      TRACE("%p, %u, %u.\n", iface, id, zorder);
  
      /* Can't change reference stream. */
      if (!id && zorder)
          return E_INVALIDARG;
  
      EnterCriticalSection(&mixer->cs);
  
      if (zorder >= mixer->input_count)
          hr = E_INVALIDARG;
      else if (SUCCEEDED(hr = video_mixer_get_input(mixer, id, &stream)))
      {
          /* Lowest zorder only applies to reference stream. */
          if (id && !zorder)
              hr = MF_E_INVALIDREQUEST;
          else
              stream->zorder = zorder;
      }
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_control_GetStreamZOrder(IMFVideoMixerControl2 *iface, DWORD id, DWORD *zorder)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerControl2(iface);
      struct input_stream *stream;
      HRESULT hr;
  
      TRACE("%p, %u, %p.\n", iface, id, zorder);
  
      if (!zorder)
          return E_POINTER;
  
      EnterCriticalSection(&mixer->cs);
  
      if (SUCCEEDED(hr = video_mixer_get_input(mixer, id, &stream)))
          *zorder = stream->zorder;
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_control_SetStreamOutputRect(IMFVideoMixerControl2 *iface, DWORD id,
          const MFVideoNormalizedRect *rect)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerControl2(iface);
      struct input_stream *stream;
      HRESULT hr;
  
      TRACE("%p, %u, %p.\n", iface, id, rect);
  
      if (!rect)
          return E_POINTER;
  
      if (rect->left > rect->right || rect->top > rect->bottom ||
              rect->left < 0.0f || rect->top < 0.0f || rect->right > 1.0f || rect->bottom > 1.0f)
      {
          return E_INVALIDARG;
      }
  
      EnterCriticalSection(&mixer->cs);
  
      if (SUCCEEDED(hr = video_mixer_get_input(mixer, id, &stream)))
          stream->rect = *rect;
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_control_GetStreamOutputRect(IMFVideoMixerControl2 *iface, DWORD id,
          MFVideoNormalizedRect *rect)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerControl2(iface);
      struct input_stream *stream;
      HRESULT hr;
  
      TRACE("%p, %u, %p.\n", iface, id, rect);
  
      if (!rect)
          return E_POINTER;
  
      EnterCriticalSection(&mixer->cs);
  
      if (SUCCEEDED(hr = video_mixer_get_input(mixer, id, &stream)))
          *rect = stream->rect;
  
      LeaveCriticalSection(&mixer->cs);
  
      return hr;
  }
  
  static HRESULT WINAPI video_mixer_control_SetMixingPrefs(IMFVideoMixerControl2 *iface, DWORD flags)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerControl2(iface);
  
      TRACE("%p, %#x.\n", iface, flags);
  
      EnterCriticalSection(&mixer->cs);
      mixer->mixing_flags = flags;
      LeaveCriticalSection(&mixer->cs);
  
      return S_OK;
  }
  
  static HRESULT WINAPI video_mixer_control_GetMixingPrefs(IMFVideoMixerControl2 *iface, DWORD *flags)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerControl2(iface);
  
      TRACE("%p, %p.\n", iface, flags);
  
      if (!flags)
          return E_POINTER;
  
      EnterCriticalSection(&mixer->cs);
      *flags = mixer->mixing_flags;
      LeaveCriticalSection(&mixer->cs);
  
      return S_OK;
  }
  
  static const IMFVideoMixerControl2Vtbl video_mixer_control_vtbl =
  {
      video_mixer_control_QueryInterface,
      video_mixer_control_AddRef,
      video_mixer_control_Release,
      video_mixer_control_SetStreamZOrder,
      video_mixer_control_GetStreamZOrder,
      video_mixer_control_SetStreamOutputRect,
      video_mixer_control_GetStreamOutputRect,
      video_mixer_control_SetMixingPrefs,
      video_mixer_control_GetMixingPrefs,
  };
  
  static HRESULT WINAPI video_mixer_getservice_QueryInterface(IMFGetService *iface, REFIID riid, void **obj)
  {
      struct video_mixer *mixer = impl_from_IMFGetService(iface);
      return IMFTransform_QueryInterface(&mixer->IMFTransform_iface, riid, obj);
  }
  
  static ULONG WINAPI video_mixer_getservice_AddRef(IMFGetService *iface)
  {
      struct video_mixer *mixer = impl_from_IMFGetService(iface);
      return IMFTransform_AddRef(&mixer->IMFTransform_iface);
  }
  
  static ULONG WINAPI video_mixer_getservice_Release(IMFGetService *iface)
  {
      struct video_mixer *mixer = impl_from_IMFGetService(iface);
      return IMFTransform_Release(&mixer->IMFTransform_iface);
  }
  
  static HRESULT WINAPI video_mixer_getservice_GetService(IMFGetService *iface, REFGUID service, REFIID riid, void **obj)
  {
      TRACE("%p, %s, %s, %p.\n", iface, debugstr_guid(service), debugstr_guid(riid), obj);
  
      if (IsEqualGUID(service, &MR_VIDEO_MIXER_SERVICE))
      {
          if (IsEqualIID(riid, &IID_IMFVideoMixerBitmap) ||
                  IsEqualIID(riid, &IID_IMFVideoProcessor) ||
                  IsEqualIID(riid, &IID_IMFVideoPositionMapper) ||
                  IsEqualIID(riid, &IID_IMFVideoMixerControl) ||
                  IsEqualIID(riid, &IID_IMFVideoMixerControl2))
          {
              return IMFGetService_QueryInterface(iface, riid, obj);
          }
  
          return E_NOINTERFACE;
      }
  
      FIXME("Unsupported service %s, riid %s.\n", debugstr_guid(service), debugstr_guid(riid));
  
      return MF_E_UNSUPPORTED_SERVICE;
  }
  
  static const IMFGetServiceVtbl video_mixer_getservice_vtbl =
  {
      video_mixer_getservice_QueryInterface,
      video_mixer_getservice_AddRef,
      video_mixer_getservice_Release,
      video_mixer_getservice_GetService,
  };
  
  static HRESULT WINAPI video_mixer_bitmap_QueryInterface(IMFVideoMixerBitmap *iface, REFIID riid, void **obj)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerBitmap(iface);
      return IMFTransform_QueryInterface(&mixer->IMFTransform_iface, riid, obj);
  }
  
  static ULONG WINAPI video_mixer_bitmap_AddRef(IMFVideoMixerBitmap *iface)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerBitmap(iface);
      return IMFTransform_AddRef(&mixer->IMFTransform_iface);
  }
  
  static ULONG WINAPI video_mixer_bitmap_Release(IMFVideoMixerBitmap *iface)
  {
      struct video_mixer *mixer = impl_from_IMFVideoMixerBitmap(iface);
      return IMFTransform_Release(&mixer->IMFTransform_iface);
  }
  
  static HRESULT WINAPI video_mixer_bitmap_SetAlphaBitmap(IMFVideoMixerBitmap *iface, const MFVideoAlphaBitmap *bitmap)
  {
      FIXME("%p, %p.\n", iface, bitmap);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_bitmap_ClearAlphaBitmap(IMFVideoMixerBitmap *iface)
  {
      FIXME("%p.\n", iface);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_bitmap_UpdateAlphaBitmapParameters(IMFVideoMixerBitmap *iface,
          const MFVideoAlphaBitmapParams *params)
  {
      FIXME("%p, %p.\n", iface, params);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_bitmap_GetAlphaBitmapParameters(IMFVideoMixerBitmap *iface, MFVideoAlphaBitmapParams *params)
  {
      FIXME("%p, %p.\n", iface, params);
  
      return E_NOTIMPL;
  }
  
  static const IMFVideoMixerBitmapVtbl video_mixer_bitmap_vtbl =
  {
      video_mixer_bitmap_QueryInterface,
      video_mixer_bitmap_AddRef,
      video_mixer_bitmap_Release,
      video_mixer_bitmap_SetAlphaBitmap,
      video_mixer_bitmap_ClearAlphaBitmap,
      video_mixer_bitmap_UpdateAlphaBitmapParameters,
      video_mixer_bitmap_GetAlphaBitmapParameters,
  };
  
  static HRESULT WINAPI video_mixer_position_mapper_QueryInterface(IMFVideoPositionMapper *iface, REFIID riid, void **obj)
  {
      struct video_mixer *mixer = impl_from_IMFVideoPositionMapper(iface);
      return IMFTransform_QueryInterface(&mixer->IMFTransform_iface, riid, obj);
  }
  
  static ULONG WINAPI video_mixer_position_mapper_AddRef(IMFVideoPositionMapper *iface)
  {
      struct video_mixer *mixer = impl_from_IMFVideoPositionMapper(iface);
      return IMFTransform_AddRef(&mixer->IMFTransform_iface);
  }
  
  static ULONG WINAPI video_mixer_position_mapper_Release(IMFVideoPositionMapper *iface)
  {
      struct video_mixer *mixer = impl_from_IMFVideoPositionMapper(iface);
      return IMFTransform_Release(&mixer->IMFTransform_iface);
  }
  
  static HRESULT WINAPI video_mixer_position_mapper_MapOutputCoordinateToInputStream(IMFVideoPositionMapper *iface,
          float x_out, float y_out, DWORD output_stream, DWORD input_stream, float *x_in, float *y_in)
  {
      FIXME("%p, %f, %f, %u, %u, %p, %p.\n", iface, x_out, y_out, output_stream, input_stream, x_in, y_in);
  
      return E_NOTIMPL;
  }
  
  static const IMFVideoPositionMapperVtbl video_mixer_position_mapper_vtbl =
  {
      video_mixer_position_mapper_QueryInterface,
      video_mixer_position_mapper_AddRef,
      video_mixer_position_mapper_Release,
      video_mixer_position_mapper_MapOutputCoordinateToInputStream,
  };
  
  static HRESULT WINAPI video_mixer_processor_QueryInterface(IMFVideoProcessor *iface, REFIID riid, void **obj)
  {
      struct video_mixer *mixer = impl_from_IMFVideoProcessor(iface);
      return IMFTransform_QueryInterface(&mixer->IMFTransform_iface, riid, obj);
  }
  
  static ULONG WINAPI video_mixer_processor_AddRef(IMFVideoProcessor *iface)
  {
      struct video_mixer *mixer = impl_from_IMFVideoProcessor(iface);
      return IMFTransform_AddRef(&mixer->IMFTransform_iface);
  }
  
  static ULONG WINAPI video_mixer_processor_Release(IMFVideoProcessor *iface)
  {
      struct video_mixer *mixer = impl_from_IMFVideoProcessor(iface);
      return IMFTransform_Release(&mixer->IMFTransform_iface);
  }
  
  static HRESULT WINAPI video_mixer_processor_GetAvailableVideoProcessorModes(IMFVideoProcessor *iface, UINT *count,
          GUID **modes)
  {
      FIXME("%p, %p, %p.\n", iface, count, modes);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_processor_GetVideoProcessorCaps(IMFVideoProcessor *iface, GUID *mode,
          DXVA2_VideoProcessorCaps *caps)
  {
      FIXME("%p, %s, %p.\n", iface, debugstr_guid(mode), caps);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_processor_GetVideoProcessorMode(IMFVideoProcessor *iface, GUID *mode)
  {
      FIXME("%p, %p.\n", iface, mode);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_processor_SetVideoProcessorMode(IMFVideoProcessor *iface, GUID *mode)
  {
      FIXME("%p, %s.\n", iface, debugstr_guid(mode));
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_processor_GetProcAmpRange(IMFVideoProcessor *iface, DWORD prop, DXVA2_ValueRange *range)
  {
      FIXME("%p, %#x, %p.\n", iface, prop, range);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_processor_GetProcAmpValues(IMFVideoProcessor *iface, DWORD flags, DXVA2_ProcAmpValues *values)
  {
      FIXME("%p, %#x, %p.\n", iface, flags, values);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_processor_SetProcAmpValues(IMFVideoProcessor *iface, DWORD flags, DXVA2_ProcAmpValues *values)
  {
      FIXME("%p, %#x, %p.\n", iface, flags, values);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_processor_GetFilteringRange(IMFVideoProcessor *iface, DWORD prop, DXVA2_ValueRange *range)
  {
      FIXME("%p, %#x, %p.\n", iface, prop, range);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_processor_GetFilteringValue(IMFVideoProcessor *iface, DWORD prop, DXVA2_Fixed32 *value)
  {
      FIXME("%p, %#x, %p.\n", iface, prop, value);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_processor_SetFilteringValue(IMFVideoProcessor *iface, DWORD prop, DXVA2_Fixed32 *value)
  {
      FIXME("%p, %#x, %p.\n", iface, prop, value);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_processor_GetBackgroundColor(IMFVideoProcessor *iface, COLORREF *color)
  {
      struct video_mixer *mixer = impl_from_IMFVideoProcessor(iface);
  
      TRACE("%p, %p.\n", iface, color);
  
      if (!color)
          return E_POINTER;
  
      EnterCriticalSection(&mixer->cs);
      *color = mixer->bkgnd_color;
      LeaveCriticalSection(&mixer->cs);
  
      return S_OK;
  }
  
  static HRESULT WINAPI video_mixer_processor_SetBackgroundColor(IMFVideoProcessor *iface, COLORREF color)
  {
      struct video_mixer *mixer = impl_from_IMFVideoProcessor(iface);
  
      TRACE("%p, %#x.\n", iface, color);
  
      EnterCriticalSection(&mixer->cs);
      mixer->bkgnd_color = color;
      LeaveCriticalSection(&mixer->cs);
  
      return S_OK;
  }
  
  static const IMFVideoProcessorVtbl video_mixer_processor_vtbl =
  {
      video_mixer_processor_QueryInterface,
      video_mixer_processor_AddRef,
      video_mixer_processor_Release,
      video_mixer_processor_GetAvailableVideoProcessorModes,
      video_mixer_processor_GetVideoProcessorCaps,
      video_mixer_processor_GetVideoProcessorMode,
      video_mixer_processor_SetVideoProcessorMode,
      video_mixer_processor_GetProcAmpRange,
      video_mixer_processor_GetProcAmpValues,
      video_mixer_processor_SetProcAmpValues,
      video_mixer_processor_GetFilteringRange,
      video_mixer_processor_GetFilteringValue,
      video_mixer_processor_SetFilteringValue,
      video_mixer_processor_GetBackgroundColor,
      video_mixer_processor_SetBackgroundColor,
  };
  
  static HRESULT WINAPI video_mixer_attributes_QueryInterface(IMFAttributes *iface, REFIID riid, void **out)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
      return IMFTransform_QueryInterface(&mixer->IMFTransform_iface, riid, out);
  }
  
  static ULONG WINAPI video_mixer_attributes_AddRef(IMFAttributes *iface)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
      return IMFTransform_AddRef(&mixer->IMFTransform_iface);
  }
  
  static ULONG WINAPI video_mixer_attributes_Release(IMFAttributes *iface)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
      return IMFTransform_Release(&mixer->IMFTransform_iface);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetItem(IMFAttributes *iface, REFGUID key, PROPVARIANT *value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
  
      return IMFAttributes_GetItem(mixer->internal_attributes, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetItemType(IMFAttributes *iface, REFGUID key, MF_ATTRIBUTE_TYPE *type)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), type);
  
      return IMFAttributes_GetItemType(mixer->internal_attributes, key, type);
  }
  
  static HRESULT WINAPI video_mixer_attributes_CompareItem(IMFAttributes *iface, REFGUID key,
          REFPROPVARIANT value, BOOL *result)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), value, result);
  
      return IMFAttributes_CompareItem(mixer->internal_attributes, key, value, result);
  }
  
  static HRESULT WINAPI video_mixer_attributes_Compare(IMFAttributes *iface, IMFAttributes *theirs,
          MF_ATTRIBUTES_MATCH_TYPE match_type, BOOL *ret)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %p, %d, %p.\n", iface, theirs, match_type, ret);
  
      return IMFAttributes_Compare(mixer->internal_attributes, theirs, match_type, ret);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetUINT32(IMFAttributes *iface, REFGUID key, UINT32 *value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
  
      return IMFAttributes_GetUINT32(mixer->internal_attributes, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetUINT64(IMFAttributes *iface, REFGUID key, UINT64 *value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
  
      return IMFAttributes_GetUINT64(mixer->internal_attributes, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetDouble(IMFAttributes *iface, REFGUID key, double *value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
  
      return IMFAttributes_GetDouble(mixer->internal_attributes, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetGUID(IMFAttributes *iface, REFGUID key, GUID *value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
  
      return IMFAttributes_GetGUID(mixer->internal_attributes, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetStringLength(IMFAttributes *iface, REFGUID key, UINT32 *length)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), length);
  
      return IMFAttributes_GetStringLength(mixer->internal_attributes, key, length);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetString(IMFAttributes *iface, REFGUID key, WCHAR *value,
          UINT32 size, UINT32 *length)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p, %d, %p.\n", iface, debugstr_guid(key), value, size, length);
  
      return IMFAttributes_GetString(mixer->internal_attributes, key, value, size, length);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetAllocatedString(IMFAttributes *iface, REFGUID key,
          WCHAR **value, UINT32 *length)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), value, length);
  
      return IMFAttributes_GetAllocatedString(mixer->internal_attributes, key, value, length);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetBlobSize(IMFAttributes *iface, REFGUID key, UINT32 *size)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), size);
  
      return IMFAttributes_GetBlobSize(mixer->internal_attributes, key, size);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetBlob(IMFAttributes *iface, REFGUID key, UINT8 *buf,
                  UINT32 bufsize, UINT32 *blobsize)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p, %d, %p.\n", iface, debugstr_guid(key), buf, bufsize, blobsize);
  
      return IMFAttributes_GetBlob(mixer->internal_attributes, key, buf, bufsize, blobsize);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetAllocatedBlob(IMFAttributes *iface, REFGUID key, UINT8 **buf, UINT32 *size)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p, %p.\n", iface, debugstr_guid(key), buf, size);
  
      return IMFAttributes_GetAllocatedBlob(mixer->internal_attributes, key, buf, size);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetUnknown(IMFAttributes *iface, REFGUID key, REFIID riid, void **out)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %s, %p.\n", iface, debugstr_guid(key), debugstr_guid(riid), out);
  
      return IMFAttributes_GetUnknown(mixer->internal_attributes, key, riid, out);
  }
  
  static HRESULT WINAPI video_mixer_attributes_SetItem(IMFAttributes *iface, REFGUID key, REFPROPVARIANT value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), value);
  
      return IMFAttributes_SetItem(mixer->internal_attributes, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_DeleteItem(IMFAttributes *iface, REFGUID key)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s.\n", iface, debugstr_guid(key));
  
      return IMFAttributes_DeleteItem(mixer->internal_attributes, key);
  }
  
  static HRESULT WINAPI video_mixer_attributes_DeleteAllItems(IMFAttributes *iface)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p.\n", iface);
  
      return IMFAttributes_DeleteAllItems(mixer->internal_attributes);
  }
  
  static HRESULT WINAPI video_mixer_attributes_SetUINT32(IMFAttributes *iface, REFGUID key, UINT32 value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %u.\n", iface, debugstr_guid(key), value);
  
      return IMFAttributes_SetUINT32(mixer->internal_attributes, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_SetUINT64(IMFAttributes *iface, REFGUID key, UINT64 value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), wine_dbgstr_longlong(value));
  
      return IMFAttributes_SetUINT64(mixer->internal_attributes, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_SetDouble(IMFAttributes *iface, REFGUID key, double value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %f.\n", iface, debugstr_guid(key), value);
  
      return IMFAttributes_SetDouble(mixer->internal_attributes, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_SetGUID(IMFAttributes *iface, REFGUID key, REFGUID value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), debugstr_guid(value));
  
      return IMFAttributes_SetGUID(mixer->internal_attributes, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_SetString(IMFAttributes *iface, REFGUID key, const WCHAR *value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %s.\n", iface, debugstr_guid(key), debugstr_w(value));
  
      return IMFAttributes_SetString(mixer->internal_attributes, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_SetBlob(IMFAttributes *iface, REFGUID key, const UINT8 *buf, UINT32 size)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p, %u.\n", iface, debugstr_guid(key), buf, size);
  
      return IMFAttributes_SetBlob(mixer->internal_attributes, key, buf, size);
  }
  
  static HRESULT WINAPI video_mixer_attributes_SetUnknown(IMFAttributes *iface, REFGUID key, IUnknown *unknown)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %s, %p.\n", iface, debugstr_guid(key), unknown);
  
      return IMFAttributes_SetUnknown(mixer->internal_attributes, key, unknown);
  }
  
  static HRESULT WINAPI video_mixer_attributes_LockStore(IMFAttributes *iface)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p.\n", iface);
  
      return IMFAttributes_LockStore(mixer->internal_attributes);
  }
  
  static HRESULT WINAPI video_mixer_attributes_UnlockStore(IMFAttributes *iface)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p.\n", iface);
  
      return IMFAttributes_UnlockStore(mixer->internal_attributes);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetCount(IMFAttributes *iface, UINT32 *count)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %p.\n", iface, count);
  
      return IMFAttributes_GetCount(mixer->internal_attributes, count);
  }
  
  static HRESULT WINAPI video_mixer_attributes_GetItemByIndex(IMFAttributes *iface, UINT32 index,
          GUID *key, PROPVARIANT *value)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %u, %p, %p.\n", iface, index, key, value);
  
      return IMFAttributes_GetItemByIndex(mixer->internal_attributes, index, key, value);
  }
  
  static HRESULT WINAPI video_mixer_attributes_CopyAllItems(IMFAttributes *iface, IMFAttributes *dest)
  {
      struct video_mixer *mixer = impl_from_IMFAttributes(iface);
  
      TRACE("%p, %p.\n", iface, dest);
  
      return IMFAttributes_CopyAllItems(mixer->internal_attributes, dest);
  }
  
  static const IMFAttributesVtbl video_mixer_attributes_vtbl =
  {
      video_mixer_attributes_QueryInterface,
      video_mixer_attributes_AddRef,
      video_mixer_attributes_Release,
      video_mixer_attributes_GetItem,
      video_mixer_attributes_GetItemType,
      video_mixer_attributes_CompareItem,
      video_mixer_attributes_Compare,
      video_mixer_attributes_GetUINT32,
      video_mixer_attributes_GetUINT64,
      video_mixer_attributes_GetDouble,
      video_mixer_attributes_GetGUID,
      video_mixer_attributes_GetStringLength,
      video_mixer_attributes_GetString,
      video_mixer_attributes_GetAllocatedString,
      video_mixer_attributes_GetBlobSize,
      video_mixer_attributes_GetBlob,
      video_mixer_attributes_GetAllocatedBlob,
      video_mixer_attributes_GetUnknown,
      video_mixer_attributes_SetItem,
      video_mixer_attributes_DeleteItem,
      video_mixer_attributes_DeleteAllItems,
      video_mixer_attributes_SetUINT32,
      video_mixer_attributes_SetUINT64,
      video_mixer_attributes_SetDouble,
      video_mixer_attributes_SetGUID,
      video_mixer_attributes_SetString,
      video_mixer_attributes_SetBlob,
      video_mixer_attributes_SetUnknown,
      video_mixer_attributes_LockStore,
      video_mixer_attributes_UnlockStore,
      video_mixer_attributes_GetCount,
      video_mixer_attributes_GetItemByIndex,
      video_mixer_attributes_CopyAllItems
  };
  
  static HRESULT WINAPI video_mixer_quality_advise_QueryInterface(IMFQualityAdvise *iface, REFIID riid, void **out)
  {
      struct video_mixer *mixer = impl_from_IMFQualityAdvise(iface);
      return IMFTransform_QueryInterface(&mixer->IMFTransform_iface, riid, out);
  }
  
  static ULONG WINAPI video_mixer_quality_advise_AddRef(IMFQualityAdvise *iface)
  {
      struct video_mixer *mixer = impl_from_IMFQualityAdvise(iface);
      return IMFTransform_AddRef(&mixer->IMFTransform_iface);
  }
  
  static ULONG WINAPI video_mixer_quality_advise_Release(IMFQualityAdvise *iface)
  {
      struct video_mixer *mixer = impl_from_IMFQualityAdvise(iface);
      return IMFTransform_Release(&mixer->IMFTransform_iface);
  }
  
  static HRESULT WINAPI video_mixer_quality_advise_SetDropMode(IMFQualityAdvise *iface, MF_QUALITY_DROP_MODE mode)
  {
      FIXME("%p, %u.\n", iface, mode);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_quality_advise_SetQualityLevel(IMFQualityAdvise *iface, MF_QUALITY_LEVEL level)
  {
      FIXME("%p, %u.\n", iface, level);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_quality_advise_GetDropMode(IMFQualityAdvise *iface, MF_QUALITY_DROP_MODE *mode)
  {
      FIXME("%p, %p.\n", iface, mode);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_quality_advise_GetQualityLevel(IMFQualityAdvise *iface, MF_QUALITY_LEVEL *level)
  {
      FIXME("%p, %p.\n", iface, level);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_quality_advise_DropTime(IMFQualityAdvise *iface, LONGLONG interval)
  {
      FIXME("%p, %s.\n", iface, wine_dbgstr_longlong(interval));
  
      return E_NOTIMPL;
  }
  
  static const IMFQualityAdviseVtbl video_mixer_quality_advise_vtbl =
  {
      video_mixer_quality_advise_QueryInterface,
      video_mixer_quality_advise_AddRef,
      video_mixer_quality_advise_Release,
      video_mixer_quality_advise_SetDropMode,
      video_mixer_quality_advise_SetQualityLevel,
      video_mixer_quality_advise_GetDropMode,
      video_mixer_quality_advise_GetQualityLevel,
      video_mixer_quality_advise_DropTime,
  };
  
  static HRESULT WINAPI video_mixer_clock_state_sink_QueryInterface(IMFClockStateSink *iface,
          REFIID riid, void **out)
  {
      struct video_mixer *mixer = impl_from_IMFClockStateSink(iface);
      return IMFTransform_QueryInterface(&mixer->IMFTransform_iface, riid, out);
  }
  
  static ULONG WINAPI video_mixer_clock_state_sink_AddRef(IMFClockStateSink *iface)
  {
      struct video_mixer *mixer = impl_from_IMFClockStateSink(iface);
      return IMFTransform_AddRef(&mixer->IMFTransform_iface);
  }
  
  static ULONG WINAPI video_mixer_clock_state_sink_Release(IMFClockStateSink *iface)
  {
      struct video_mixer *mixer = impl_from_IMFClockStateSink(iface);
      return IMFTransform_Release(&mixer->IMFTransform_iface);
  }
  
  static HRESULT WINAPI video_mixer_clock_state_sink_OnClockStart(IMFClockStateSink *iface,
          MFTIME systime, LONGLONG offset)
  {
      FIXME("%p.\n", iface);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_clock_state_sink_OnClockStop(IMFClockStateSink *iface,
          MFTIME systime)
  {
      FIXME("%p.\n", iface);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_clock_state_sink_OnClockPause(IMFClockStateSink *iface,
          MFTIME systime)
  {
      FIXME("%p.\n", iface);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_clock_state_sink_OnClockRestart(IMFClockStateSink *iface,
          MFTIME systime)
  {
      FIXME("%p.\n", iface);
  
      return E_NOTIMPL;
  }
  
  static HRESULT WINAPI video_mixer_clock_state_sink_OnClockSetRate(IMFClockStateSink *iface,
          MFTIME systime, float rate)
  {
      FIXME("%p, %f.\n", iface, rate);
  
      return E_NOTIMPL;
  }
  
  static const IMFClockStateSinkVtbl video_mixer_clock_state_sink_vtbl =
  {
      video_mixer_clock_state_sink_QueryInterface,
      video_mixer_clock_state_sink_AddRef,
      video_mixer_clock_state_sink_Release,
      video_mixer_clock_state_sink_OnClockStart,
      video_mixer_clock_state_sink_OnClockStop,
      video_mixer_clock_state_sink_OnClockPause,
      video_mixer_clock_state_sink_OnClockRestart,
      video_mixer_clock_state_sink_OnClockSetRate,
  };
  
  HRESULT WINAPI MFCreateVideoMixer(IUnknown *owner, REFIID riid_device, REFIID riid, void **obj)
  {
      TRACE("%p, %s, %s, %p.\n", owner, debugstr_guid(riid_device), debugstr_guid(riid), obj);
  
      *obj = NULL;
  
      if (!IsEqualIID(riid_device, &IID_IDirect3DDevice9))
          return E_INVALIDARG;
  
      return CoCreateInstance(&CLSID_MFVideoMixer9, owner, CLSCTX_INPROC_SERVER, riid, obj);
  }
  
  HRESULT evr_mixer_create(IUnknown *outer, void **out)
  {
      struct video_mixer *object;
      MFVideoNormalizedRect rect;
      HRESULT hr;
  
      if (!(object = calloc(1, sizeof(*object))))
          return E_OUTOFMEMORY;
  
      object->IMFTransform_iface.lpVtbl = &video_mixer_transform_vtbl;
      object->IMFVideoDeviceID_iface.lpVtbl = &video_mixer_device_id_vtbl;
      object->IMFTopologyServiceLookupClient_iface.lpVtbl = &video_mixer_service_client_vtbl;
      object->IMFVideoMixerControl2_iface.lpVtbl = &video_mixer_control_vtbl;
      object->IMFGetService_iface.lpVtbl = &video_mixer_getservice_vtbl;
      object->IMFVideoMixerBitmap_iface.lpVtbl = &video_mixer_bitmap_vtbl;
      object->IMFVideoPositionMapper_iface.lpVtbl = &video_mixer_position_mapper_vtbl;
      object->IMFVideoProcessor_iface.lpVtbl = &video_mixer_processor_vtbl;
      object->IMFAttributes_iface.lpVtbl = &video_mixer_attributes_vtbl;
      object->IMFQualityAdvise_iface.lpVtbl = &video_mixer_quality_advise_vtbl;
      object->IMFClockStateSink_iface.lpVtbl = &video_mixer_clock_state_sink_vtbl;
      object->IUnknown_inner.lpVtbl = &video_mixer_inner_vtbl;
      object->outer_unk = outer ? outer : &object->IUnknown_inner;
      object->refcount = 1;
      object->input_count = 1;
      object->lower_bound = MFT_OUTPUT_BOUND_LOWER_UNBOUNDED;
      object->upper_bound = MFT_OUTPUT_BOUND_UPPER_UNBOUNDED;
      video_mixer_init_input(&object->inputs[0]);
      InitializeCriticalSection(&object->cs);
      if (FAILED(hr = MFCreateAttributes(&object->attributes, 0)))
      {
          IUnknown_Release(&object->IUnknown_inner);
          return hr;
      }
      if (FAILED(hr = MFCreateAttributes(&object->internal_attributes, 0)))
      {
          IUnknown_Release(&object->IUnknown_inner);
          return hr;
      }
  
      /* Default attributes configuration. */
  
      rect.left = rect.top = 0.0f;
      rect.right = rect.bottom = 1.0f;
      IMFAttributes_SetBlob(object->attributes, &VIDEO_ZOOM_RECT, (const UINT8 *)&rect, sizeof(rect));
  
      IMFAttributes_SetUINT32(object->internal_attributes, &MF_SA_D3D_AWARE, 1);
  
      *out = &object->IUnknown_inner;
  
      return S_OK;
  }
  