public VideoRenderer(VideoTrack videoTrack, RendererOptions options)
{
VideoTrack = videoTrack;
VideoFrameWidth = options.VideoFrameWidth;
VideoFrameHeight = options.VideoFrameHeight;
VideoFrameQueueSize = options.VideoFrameQueueSize;
videoTrack.LocalVideoFrameEncoded += OnLocalVideoFrameEncoded;
// _onMissedFrame = options.OnMissedFrame ?? OnMissedFrame;
bool debug = options.CreationFlags.HasFlag(D3D11.DeviceCreationFlags.Debug);
FactoryDXGI = new DXGI.Factory2(debug);
// Find the requested adapter.
using (var adapters = FactoryDXGI.Adapters.ToDisposableList())
{
var adapter = adapters.First(a => a.Description.VendorId == options.AdapterVendorId);
Device3D = new D3D11.Device(adapter, options.CreationFlags, options.FeatureLevels);
DeviceDXGI = Device3D.QueryInterface <DXGI.Device>();
// We need to access D3D11 on multiple threads, so enable multi-threading
ThreadLock3D = Device3D.ImmediateContext.QueryInterface <D3D11.Multithread>();
ThreadLock3D.SetMultithreadProtected(true);
}
}
public async Task EncodeAsync(IRandomAccessStream stream, uint width, uint height, uint bitrateInBps, uint frameRate)
{
if (!_isRecording)
{
_isRecording = true;
_multithread = _d3dDevice.QueryInterface <SharpDX.Direct3D11.Multithread>();
_multithread.SetMultithreadProtected(true);
_frameEvent = new ManualResetEvent(false);
_closedEvent = new ManualResetEvent(false);
_events = new[] { _closedEvent, _frameEvent };
InitializeComposeTexture(_captureItem.Size);
InitializeCapture(_captureItem.Size);
var encodingProfile = new MediaEncodingProfile();
encodingProfile.Container.Subtype = "MPEG4";
encodingProfile.Video.Subtype = "H264";
encodingProfile.Video.Width = 1920;
encodingProfile.Video.Height = 1080;
encodingProfile.Video.Bitrate = bitrateInBps;
encodingProfile.Video.FrameRate.Numerator = frameRate;
encodingProfile.Video.FrameRate.Denominator = 1;
encodingProfile.Video.PixelAspectRatio.Numerator = 1;
encodingProfile.Video.PixelAspectRatio.Denominator = 1;
var transcode = await _transcoder.PrepareMediaStreamSourceTranscodeAsync(_mediaStreamSource, stream, encodingProfile);
try
{
await transcode.TranscodeAsync();
}
catch (Exception ex)
{
Debugger.Break();
}
}
}
public MultithreadLock(SharpDX.Direct3D11.Multithread multithread)
{
_multithread = multithread;
_multithread?.Enter();
}
