从 CanvasBitmap 转换为 ID3D11Texture2D

Question

我有一个使用 Win2d 准备电影帧的程序。 该框架采用 CanvasBitmap 格式。 我想将这样的帧保存为电影。 为此，我从 CanvasBitmap 切换到 ID3D11Texture2D。 我按如下方式进行操作，但是在保存了数十个样本后，出现了“设备丢失”类型的错误。 可能原因是样品的发布。 是否有另一种方法可以从 CanvasBitmap 切换到 ID3D11Texture2D - 以便有效地保存电影帧？

int AddWin2DFrame (CanvasBitmap^ frame) 
{
    ComPtr<ID2D1Device> nativeDevice = GetWrappedResource<ID2D1Device>(frame->Device);
    ComPtr<ID2D1Bitmap1> nativeBitmap = GetWrappedResource<ID2D1Bitmap1>(frame);

    ComPtr<IDXGISurface> dxgiSurface;
    CHK(nativeBitmap->GetSurface(&dxgiSurface));
    ComPtr<ID3D11Resource> d3dResource;
    CHK(dxgiSurface.As(&d3dResource));

    Microsoft::WRL::ComPtr<IMFMediaBuffer> writeBuffer;
    CHK(MFCreateDXGISurfaceBuffer(__uuidof(ID3D11Texture2D), d3dResource.Get(), 0, false, &writeBuffer));

    ComPtr<IMF2DBuffer> p2DBuffer;
    DWORD length;
    writeBuffer->QueryInterface(__uuidof(IMF2DBuffer), &p2DBuffer);
    CHK(p2DBuffer->GetContiguousLength(&length));
    CHK(writeBuffer->SetCurrentLength(length));

    Microsoft::WRL::ComPtr<IMFSample> writeSample;

    CHK(MFCreateSample(&writeSample));

    CHK(writeSample->AddBuffer(writeBuffer.Get()));

    CHK(writeSample->SetSampleDuration(sampleDuration));
    CHK(writeSample->SetSampleTime(_hnsSampleTime));

    CHK(_spSinkWriter->WriteSample(_streamIndex, writeSample.Get()));
}

Answer 1

问题已经解决了。 通过设置 MF_SINK_WRITER_D3D_MANAGER 来修复它，如下所示：

ComPtr<IMFAttributes> spAttr;
CHK(MFCreateAttributes(&spAttr, 4));
CHK(spAttr->SetUnknown(MF_SINK_WRITER_D3D_MANAGER, deviceManager.Get()));
.........
CHK(MFCreateSinkWriterFromURL(ws1.c_str(), spByteStream.Get(), spAttr.Get(), &_spSinkWriter));