public void Start1()
{
var flags = DeviceCreationFlags.VideoSupport |
DeviceCreationFlags.BgraSupport |
DeviceCreationFlags.Debug;
var device = new SharpDX.Direct3D11.Device(SharpDX.Direct3D.DriverType.Hardware, flags);
using (var multiThread = device.QueryInterface <SharpDX.Direct3D11.Multithread>())
{
multiThread.SetMultithreadProtected(true);
}
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(@"D:\Temp\4.bmp");
Texture2D rgbTexture = DxTool.GetTexture(bmp, device);
var bufTexture = new Texture2D(device,
new Texture2DDescription
{
// Format = Format.NV12,
Format = SharpDX.DXGI.Format.B8G8R8A8_UNorm,
Width = 1920,
Height = 1080,
MipLevels = 1,
ArraySize = 1,
SampleDescription = { Count = 1 },
});
device.ImmediateContext.CopyResource(rgbTexture, bufTexture);
var processor = new MfVideoProcessor(device);
var inProcArgs = new MfVideoArgs
{
Width = 1920,
Height = 1080,
Format = SharpDX.MediaFoundation.VideoFormatGuids.Argb32,
};
var outProcArgs = new MfVideoArgs
{
Width = 1920,
Height = 1080,
Format = SharpDX.MediaFoundation.VideoFormatGuids.NV12, //.Argb32,
};
processor.Setup(inProcArgs, outProcArgs);
processor.Start();
var rgbSample = MediaFactory.CreateVideoSampleFromSurface(null);
// Create the media buffer from the texture
MediaFactory.CreateDXGISurfaceBuffer(typeof(Texture2D).GUID, bufTexture, 0, false, out var mediaBuffer);
using (var buffer2D = mediaBuffer.QueryInterface <Buffer2D>())
{
mediaBuffer.CurrentLength = buffer2D.ContiguousLength;
}
rgbSample.AddBuffer(mediaBuffer);
rgbSample.SampleTime = 0;
rgbSample.SampleDuration = 0;
var result = processor.ProcessSample(rgbSample, out var nv12Sample);
Task.Run(() =>
{
Stopwatch sw = new Stopwatch();
int fps = 60;
int interval = (int)(1000.0 / fps);
int _count = 1;
long globalTime = 0;
while (true)
{
if (result)
{
globalTime += sw.ElapsedMilliseconds;
sw.Restart();
nv12Sample.SampleTime = MfTool.SecToMfTicks((globalTime / 1000.0));
nv12Sample.SampleDuration = MfTool.SecToMfTicks(((int)interval / 1000.0));
//sample.SampleTime = MfTool.SecToMfTicks((globalTime / 1000.0));
//sample.SampleDuration = MfTool.SecToMfTicks(((int)interval / 1000.0));
SampleReady?.Invoke(nv12Sample);
var msec = sw.ElapsedMilliseconds;
var delay = interval - msec;
if (delay < 0)
{
delay = 1;
}
// var delay = 1;
Thread.Sleep((int)delay);
var elapsedMilliseconds = sw.ElapsedMilliseconds;
globalTime += elapsedMilliseconds;
_count++;
}
//nv12Sample?.Dispose();
//Thread.Sleep(30);
}
});
}
public void Start()
{
logger.Debug("VideoCaptureSource::Start()");
running = true;
Task.Run(() =>
{
processor.Start();
int sampleCount = 0;
try
{
while (running)
{
int actualIndex = 0;
SourceReaderFlags flags = SourceReaderFlags.None;
long timestamp = 0;
var sample = sourceReader.ReadSample(SourceReaderIndex.FirstVideoStream, SourceReaderControlFlags.None, out actualIndex, out flags, out timestamp);
try
{
//Console.WriteLine("#" + sampleCount + " Timestamp " + timestamp + " Flags " + flags);
if (sample != null)
{
//Console.WriteLine("SampleTime " + sample.SampleTime + " SampleDuration " + sample.SampleDuration + " SampleFlags " + sample.SampleFlags);
Sample outputSample = null;
try
{
var res = processor.ProcessSample(sample, out outputSample);
if (res)
{
//Console.WriteLine("outputSample!=null" + (outputSample != null));
var mediaBuffer = outputSample.ConvertToContiguousBuffer();
var ptr = mediaBuffer.Lock(out int cbMaxLengthRef, out int cbCurrentLengthRef);
//var width = outProcArgs.Width;
//var height = outProcArgs.Height;
var dataBox = device.ImmediateContext.MapSubresource(texture, 0, MapMode.Read, MapFlags.None);
Kernel32.CopyMemory(dataBox.DataPointer, ptr, (uint)cbCurrentLengthRef);
device.ImmediateContext.UnmapSubresource(texture, 0);
device.ImmediateContext.CopyResource(texture, SharedTexture);
device.ImmediateContext.Flush();
OnBufferUpdated();
//GDI.Bitmap bmp = new GDI.Bitmap(width, height, GDI.Imaging.PixelFormat.Format32bppArgb);
//DxTool.TextureToBitmap(texture, bmp);
////var bmpData = bmp.LockBits(new GDI.Rectangle(0, 0, width, height), GDI.Imaging.ImageLockMode.WriteOnly, bmp.PixelFormat);
////uint size = (uint)(bmpData.Stride * height);
////Kernel32.CopyMemory(bmpData.Scan0, ptr, size);
////bmp.UnlockBits(bmpData);
////var fileName = @"d:\BMP\" + "#" + sampleCount + "_" + timestamp + ".bmp";
////bmp.Save(fileName, GDI.Imaging.ImageFormat.Bmp);
//bmp.Dispose();
mediaBuffer.Unlock();
mediaBuffer?.Dispose();
}
}
catch (Exception ex)
{
logger.Error(ex);
}
finally
{
if (outputSample != null)
{
outputSample.Dispose();
}
}
}
}
finally
{
sample?.Dispose();
}
sampleCount++;
}
}
catch (Exception ex)
{
logger.Error(ex);
}
finally
{
if (processor != null)
{
processor.Stop();
}
}
});
}