Why I get OutOfMemory exception when trying create a decoder - c++

Question

I'm trying to get ID3D11VideoDecoder Decoder with h264 decoder profile but catching exception on Windows Phone 8.
Using this code:
DX::ThrowIfFailed(device.Get()->QueryInterface(__uuidof(ID3D11VideoDevice), (void**)&videoDevice));
GUID guid = {0x1b81be68, 0xa0c7,0x11d3,{0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5}};
D3D11_VIDEO_DECODER_DESC *desc = new D3D11_VIDEO_DECODER_DESC();
desc->Guid = guid;
desc->OutputFormat = DXGI_FORMAT_420_OPAQUE;
desc->SampleHeight = 480;
desc->SampleWidth = 800;
D3D11_VIDEO_DECODER_CONFIG *conf = new D3D11_VIDEO_DECODER_CONFIG();
ID3D11VideoDecoder *decoder;
DX::ThrowIfFailed(videoDevice.Get()->CreateVideoDecoder(desc, conf, &decoder));
PS. I tried SharpDX for this and got the same issue.

Answer 1

It seems you didn't pass in a valid D3D11_VIDEO_DECODER_CONFIG variable. you just define a pointer of struct D3D11_VIDEO_DECODER_CONFIG and didn't set the values of it before calling function CreateVideoDecoder.
D3D11_VIDEO_DECODER_CONFIG *conf = new D3D11_VIDEO_DECODER_CONFIG();
DX::ThrowIfFailed(videoDevice.Get()->CreateVideoDecoder(desc, conf, &decoder));
You can try it as below.
D3D11_VIDEO_DECODER_CONFIG conf
ZeroMemory(&conf, sizeof(conf));
conf.guidConfigBitstreamEncryption = xxx;
...
conf.ConfigDecoderSpecific = xxx;
DX::ThrowIfFailed(videoDevice.Get()->CreateVideoDecoder(desc, conf, &decoder));

Answer 2

So, I found solution.
for H264 decoder ConfigBitstreamRaw field must be "2". Not "1", not "0". Only "2". Like this
VideoDecoderDescription decoderDescription = new VideoDecoderDescription();
decoderDescription.OutputFormat = Format.Opaque420;
decoderDescription.SampleHeight = 480;
decoderDescription.SampleWidth = 800;
decoderDescription.Guid = _formatGuid;
VideoDecoderConfig config = new VideoDecoderConfig();
config.ConfigMinRenderTargetBuffCount = 1;
config.ConfigBitstreamRaw = 2;