Method Player_Create

Source/Engine/Video/MF/VideoBackendMF.cpp:468–517

}

bool VideoBackendMF::Player_Create(const VideoBackendPlayerInfo& info, VideoBackendPlayer& player)
{
    PROFILE_CPU();
    PROFILE_MEM(Video);
    player = VideoBackendPlayer();
    auto& playerMF = player.GetBackendState<VideoPlayerMF>();

    // Load media
    IMFAttributes* attributes = nullptr;
    HRESULT hr = MFCreateAttributes(&attributes, 1);
    if (FAILED(hr))
    {
        VIDEO_API_MF_ERROR(MFCreateAttributes, hr);
        return true;
    }
    attributes->SetUINT32(MF_READWRITE_ENABLE_HARDWARE_TRANSFORMS, 1);
    attributes->SetUINT32(MF_SOURCE_READER_ENABLE_VIDEO_PROCESSING, 1);
    IMFSourceReader* sourceReader = nullptr;
    hr = MFCreateSourceReaderFromURL(*info.Url, attributes, &sourceReader);
    attributes->Release();
    if (FAILED(hr) || !sourceReader)
    {
        VIDEO_API_MF_ERROR(MFCreateSourceReaderFromURL, hr);
        return true;
    }
    sourceReader->SetStreamSelection(MF_SOURCE_READER_FIRST_VIDEO_STREAM, 1);
    bool hasAudio = sourceReader->SetStreamSelection(MF_SOURCE_READER_FIRST_AUDIO_STREAM, 1) == S_OK;
    playerMF.SourceReader = sourceReader;

    // Read media info
    if (MF::Configure(player, playerMF, MF_SOURCE_READER_FIRST_VIDEO_STREAM) ||
        hasAudio && MF::Configure(player, playerMF, MF_SOURCE_READER_FIRST_AUDIO_STREAM))
        return true;
    PROPVARIANT var;
    hr = sourceReader->GetPresentationAttribute(MF_SOURCE_READER_MEDIASOURCE, MF_PD_DURATION, &var);
    if (SUCCEEDED(hr))
    {
        player.Duration.Ticks = var.vt == VT_UI8 ? var.uhVal.QuadPart : 0;
        PropVariantClear(&var);
    }

    // Setup player data
    player.Backend = this;
    playerMF.Loop = info.Loop;
    playerMF.FirstFrame = 1;
    player.Created(info);
    MF::Players.Add(&player);

    return false;
}

void VideoBackendMF::Player_Destroy(VideoBackendPlayer& player)
{