public Result CreateVideoDecoder(VideoDecoderDescription description, VideoDecoderConfig config, out ID3D11VideoDecoder decoder)
{
return(CreateVideoDecoder(ref description, ref config, out decoder));
}
private void CreateHarwareAccelerationContext(GraphicsDevice graphicsDevice, AVCodecContext *pAVCodecContext, AVCodec *pCodec)
{
var videoDevice = graphicsDevice?.NativeDevice?.QueryInterface <VideoDevice1>();
var videoContext = graphicsDevice?.NativeDeviceContext?.QueryInterface <VideoContext1>();
if (videoDevice == null || videoContext == null)
{
return;
}
foreach (var profile in FindVideoFormatCompatibleProfiles(videoDevice, *pCodec))
{
// Create and configure the video decoder
var videoDecoderDescription = new VideoDecoderDescription
{
Guid = profile,
SampleWidth = pAVCodecContext->width,
SampleHeight = pAVCodecContext->height,
OutputFormat = DecoderOuputFormat,
};
videoDevice.GetVideoDecoderConfigCount(ref videoDecoderDescription, out var configCount);
for (var i = 0; i < configCount; ++i)
{
// get and check the decoder configuration for the profile
videoDevice.GetVideoDecoderConfig(ref videoDecoderDescription, i, out var decoderConfig);
//if (check to performe on the config)
// continue;
// create the decoder from the configuration
videoDevice.CreateVideoDecoder(ref videoDecoderDescription, ref decoderConfig, out videoHardwareDecoder);
// create the decoder output view
var videoDecoderOutputViewDescription = new VideoDecoderOutputViewDescription
{
DecodeProfile = profile,
Dimension = VdovDimension.Texture2D,
Texture2D = new Texture2DVdov {
ArraySlice = 0,
},
};
DecoderOutputTexture = Texture.New2D(graphicsDevice, pAVCodecContext->width, pAVCodecContext->height, (PixelFormat)DecoderOuputFormat, TextureFlags.RenderTarget | TextureFlags.ShaderResource);
videoDevice.CreateVideoDecoderOutputView(DecoderOutputTexture.NativeResource, ref videoDecoderOutputViewDescription, out videoHardwareDecoderView);
// Create and fill the hardware context
var contextd3d11 = ffmpeg.av_d3d11va_alloc_context();
var iVideoContext = new ID3D11VideoContext {
lpVtbl = (ID3D11VideoContextVtbl *)videoContext.NativePointer
};
videoContextHandle = new PinnedObject <ID3D11VideoContext>(iVideoContext);
contextd3d11->video_context = (ID3D11VideoContext *)videoContextHandle.Pointer;
var iVideoDecoder = new ID3D11VideoDecoder {
lpVtbl = (ID3D11VideoDecoderVtbl *)videoHardwareDecoder.NativePointer
};
videoDecoderHandle = new PinnedObject <ID3D11VideoDecoder>(iVideoDecoder);
contextd3d11->decoder = (ID3D11VideoDecoder *)videoDecoderHandle.Pointer;
decoderConfigHandle = new PinnedObject <D3D11_VIDEO_DECODER_CONFIG>(decoderConfig.ToFFmpegDecoderConfig());
contextd3d11->cfg = (D3D11_VIDEO_DECODER_CONFIG *)decoderConfigHandle.Pointer;
var iVideoOutputView = new ID3D11VideoDecoderOutputView {
lpVtbl = (ID3D11VideoDecoderOutputViewVtbl *)videoHardwareDecoderView.NativePointer
};
decoderOuputViewsHandle = new PinnedObject <ID3D11VideoDecoderOutputView>(iVideoOutputView, true);
contextd3d11->surface = (ID3D11VideoDecoderOutputView **)decoderOuputViewsHandle.Pointer;
contextd3d11->surface_count = 1;
pAVCodecContext->hwaccel_context = contextd3d11;
}
}
}
