private async void FrameReader_FrameArrived(MultiSourceMediaFrameReader sender, MultiSourceMediaFrameArrivedEventArgs args)
{
if (capturing)
{
capturing = false;
using (MultiSourceMediaFrameReference muxedFrameRef = sender.TryAcquireLatestFrame())
using (MediaFrameReference colorFrameRef = muxedFrameRef.TryGetFrameReferenceBySourceId(_colorSourceId))
using (MediaFrameReference depthFrameRef = muxedFrameRef.TryGetFrameReferenceBySourceId(_depthSourceId))
{
_frameReceived.Set();
// do something with the frames
VideoMediaFrame colorFrame = colorFrameRef.VideoMediaFrame;
VideoMediaFrame depthFrame = depthFrameRef.VideoMediaFrame;
SoftwareBitmap colorBitmap = colorFrame?.SoftwareBitmap;
SoftwareBitmap depthBitmap = depthFrame?.SoftwareBitmap;
StorageFolder storageFolder = ApplicationData.Current.LocalFolder;
StorageFile outputFile = await storageFolder.CreateFileAsync("image.png", CreationCollisionOption.ReplaceExisting);
SaveSoftwareBitmapToFile(colorBitmap, outputFile);
colorBitmap.Dispose();
depthBitmap.Dispose();
}
}
}
// <SnippetMultiFrameArrived>
private void MultiFrameReader_FrameArrived(MultiSourceMediaFrameReader sender, MultiSourceMediaFrameArrivedEventArgs args)
{
using (MultiSourceMediaFrameReference muxedFrame =
sender.TryAcquireLatestFrame())
using (MediaFrameReference colorFrame =
muxedFrame.TryGetFrameReferenceBySourceId(_colorSourceId))
using (MediaFrameReference depthFrame =
muxedFrame.TryGetFrameReferenceBySourceId(_depthSourceId))
{
// Notify the listener thread that the frame has been received.
_frameReceived.Set();
_frameRenderer.ProcessFrame(depthFrame);
}
}
// </SnippetMultiFrameDeclarations>
private async void InitMultiFrame()
{
// <SnippetSelectColorAndDepth>
var allGroups = await MediaFrameSourceGroup.FindAllAsync();
var eligibleGroups = allGroups.Select(g => new
{
Group = g,
// For each source kind, find the source which offers that kind of media frame,
// or null if there is no such source.
SourceInfos = new MediaFrameSourceInfo[]
{
g.SourceInfos.FirstOrDefault(info => info.SourceKind == MediaFrameSourceKind.Color),
g.SourceInfos.FirstOrDefault(info => info.SourceKind == MediaFrameSourceKind.Depth)
}
}).Where(g => g.SourceInfos.Any(info => info != null)).ToList();
if (eligibleGroups.Count == 0)
{
System.Diagnostics.Debug.WriteLine("No source group with color, depth or infrared found.");
return;
}
var selectedGroupIndex = 0; // Select the first eligible group
MediaFrameSourceGroup selectedGroup = eligibleGroups[selectedGroupIndex].Group;
MediaFrameSourceInfo colorSourceInfo = eligibleGroups[selectedGroupIndex].SourceInfos[0];
MediaFrameSourceInfo depthSourceInfo = eligibleGroups[selectedGroupIndex].SourceInfos[1];
// </SnippetSelectColorAndDepth>
// <SnippetMultiFrameInitMediaCapture>
mediaCapture = new MediaCapture();
var settings = new MediaCaptureInitializationSettings()
{
SourceGroup = selectedGroup,
SharingMode = MediaCaptureSharingMode.ExclusiveControl,
MemoryPreference = MediaCaptureMemoryPreference.Cpu,
StreamingCaptureMode = StreamingCaptureMode.Video
};
await mediaCapture.InitializeAsync(settings);
// </SnippetMultiFrameInitMediaCapture>
// <SnippetGetColorAndDepthSource>
MediaFrameSource colorSource =
mediaCapture.FrameSources.Values.FirstOrDefault(
s => s.Info.SourceKind == MediaFrameSourceKind.Color);
MediaFrameSource depthSource =
mediaCapture.FrameSources.Values.FirstOrDefault(
s => s.Info.SourceKind == MediaFrameSourceKind.Depth);
if (colorSource == null || depthSource == null)
{
System.Diagnostics.Debug.WriteLine("MediaCapture doesn't have the Color and Depth streams");
return;
}
_colorSourceId = colorSource.Info.Id;
_depthSourceId = depthSource.Info.Id;
// </SnippetGetColorAndDepthSource>
// <SnippetInitMultiFrameReader>
_multiFrameReader = await mediaCapture.CreateMultiSourceFrameReaderAsync(
new[] { colorSource, depthSource });
_multiFrameReader.FrameArrived += MultiFrameReader_FrameArrived;
_frameRenderer = new FrameRenderer(imageElement);
MultiSourceMediaFrameReaderStartStatus startStatus =
await _multiFrameReader.StartAsync();
if (startStatus != MultiSourceMediaFrameReaderStartStatus.Success)
{
throw new InvalidOperationException(
"Unable to start reader: " + startStatus);
}
this.CorrelationFailed += MainPage_CorrelationFailed;
Task.Run(() => NotifyAboutCorrelationFailure(_tokenSource.Token));
// </SnippetInitMultiFrameReader>
}
private async void init()
{
var frameSourceGroups = await MediaFrameSourceGroup.FindAllAsync();
LogError("checkpoint 1.1");
var targetGroups = frameSourceGroups.Select(g => new
{
Group = g,
SourceInfos = new MediaFrameSourceInfo[]
{
g.SourceInfos.FirstOrDefault(info => info.SourceKind == MediaFrameSourceKind.Color),
g.SourceInfos.FirstOrDefault(info => info.SourceKind == MediaFrameSourceKind.Depth),
}
}).Where(g => g.SourceInfos.Any(info => info != null)).ToList();
LogError("checkpoint 1.2");
if (targetGroups.Count == 0)
{
LogError("No source groups found.");
return;
}
MediaFrameSourceGroup mediaSourceGroup = targetGroups[0].Group;
LogError("checkpoint 1.3");
mediaCapture = new MediaCapture();
LogError("checkpoint 1.4");
var settings = new MediaCaptureInitializationSettings()
{
SourceGroup = mediaSourceGroup,
SharingMode = MediaCaptureSharingMode.ExclusiveControl,
MemoryPreference = MediaCaptureMemoryPreference.Cpu,
StreamingCaptureMode = StreamingCaptureMode.Video
};
LogError("checkpoint 1.5");
await mediaCapture.InitializeAsync(settings);
LogError("checkpoint 1.6");
MediaFrameSource colorSource =
mediaCapture.FrameSources.Values.FirstOrDefault(
s => s.Info.SourceKind == MediaFrameSourceKind.Color);
MediaFrameSource depthSource =
mediaCapture.FrameSources.Values.FirstOrDefault(
s => s.Info.SourceKind == MediaFrameSourceKind.Depth);
LogError("checkpoint 1.7");
if (colorSource == null || depthSource == null)
{
LogError("Cannot find color or depth stream.");
return;
}
MediaFrameFormat colorFormat = colorSource.SupportedFormats.Where(format =>
{
return(format.VideoFormat.Width >= 640 &&
format.Subtype == MediaEncodingSubtypes.Rgb24);
}).FirstOrDefault();
MediaFrameFormat depthFormat = depthSource.SupportedFormats.Where(format =>
{
return(format.VideoFormat.Width >= 640 &&
format.Subtype == MediaEncodingSubtypes.D16);
}).FirstOrDefault();
await colorSource.SetFormatAsync(colorFormat);
await depthSource.SetFormatAsync(depthFormat);
_colorSourceId = colorSource.Info.Id;
_depthSourceId = depthSource.Info.Id;
_frameReader = await mediaCapture.CreateMultiSourceFrameReaderAsync(
new[] { colorSource, depthSource });
_frameReader.FrameArrived += FrameReader_FrameArrived;
MultiSourceMediaFrameReaderStartStatus startStatus = await _frameReader.StartAsync();
if (startStatus != MultiSourceMediaFrameReaderStartStatus.Success)
{
throw new InvalidOperationException("Unable to start reader: " + startStatus);
}
this.CorrelationFailed += MainPage_CorrelationFailed;
Task.Run(() => NotifyAboutCorrelationFailure(_tokenSource.Token));
}