public async Task Initialize(VideoSetting videoSetting)
{
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAndAwaitAsync(CoreDispatcherPriority.Normal, async() =>
{
_threadsCount = videoSetting.UsedThreads;
_stoppedThreads = videoSetting.UsedThreads;
_lastFrameAdded.Start();
_imageQuality = new BitmapPropertySet();
var imageQualityValue = new BitmapTypedValue(videoSetting.VideoQuality, Windows.Foundation.PropertyType.Single);
_imageQuality.Add("ImageQuality", imageQualityValue);
_mediaCapture = new MediaCapture();
var frameSourceGroups = await MediaFrameSourceGroup.FindAllAsync();
var settings = new MediaCaptureInitializationSettings()
{
SharingMode = MediaCaptureSharingMode.ExclusiveControl,
//With CPU the results contain always SoftwareBitmaps, otherwise with GPU
//they preferring D3DSurface
MemoryPreference = MediaCaptureMemoryPreference.Cpu,
//Capture only video, no audio
StreamingCaptureMode = StreamingCaptureMode.Video
};
await _mediaCapture.InitializeAsync(settings);
var mediaFrameSource = _mediaCapture.FrameSources.First().Value;
var videoDeviceController = mediaFrameSource.Controller.VideoDeviceController;
videoDeviceController.DesiredOptimization = Windows.Media.Devices.MediaCaptureOptimization.Quality;
videoDeviceController.PrimaryUse = Windows.Media.Devices.CaptureUse.Video;
//Set exposure (auto light adjustment)
if (_mediaCapture.VideoDeviceController.Exposure.Capabilities.Supported &&
_mediaCapture.VideoDeviceController.Exposure.Capabilities.AutoModeSupported)
{
_mediaCapture.VideoDeviceController.Exposure.TrySetAuto(true);
}
var videoResolutionWidthHeight = VideoResolutionWidthHeight.Get(videoSetting.VideoResolution);
var videoSubType = VideoSubtypeHelper.Get(videoSetting.VideoSubtype);
//Set resolution, frame rate and video subtyp
var videoFormat = mediaFrameSource.SupportedFormats.Where(sf => sf.VideoFormat.Width == videoResolutionWidthHeight.Width &&
sf.VideoFormat.Height == videoResolutionWidthHeight.Height &&
sf.Subtype == videoSubType)
.OrderByDescending(m => m.FrameRate.Numerator / m.FrameRate.Denominator)
.First();
await mediaFrameSource.SetFormatAsync(videoFormat);
_mediaFrameReader = await _mediaCapture.CreateFrameReaderAsync(mediaFrameSource);
await _mediaFrameReader.StartAsync();
});
}
private async Task WriteResponse(HttpServerRequest request, StreamSocket socket)
{
var relativeUrlLower = request.Url.ToLowerInvariant();
var outputStream = socket.OutputStream;
//Get javascript files
if (relativeUrlLower.StartsWith("/javascript"))
{
await HttpServerResponse.WriteResponseFile(ToFolderPath(request.Url), HttpContentType.JavaScript, outputStream);
}
//Get css style files
else if (relativeUrlLower.StartsWith("/styles"))
{
await HttpServerResponse.WriteResponseFile(ToFolderPath(request.Url), HttpContentType.Css, outputStream);
}
//Get video setting
else if (relativeUrlLower.StartsWith("/videosetting"))
{
HttpServerResponse.WriteResponseJson(ConfigurationFile.VideoSetting.Stringify(), outputStream);
}
//Get supported video settings
else if (relativeUrlLower.StartsWith("/supportedvideosettings"))
{
HttpServerResponse.WriteResponseJson(ConfigurationFile.VideoSettingsSupported.Stringify(), outputStream);
}
//Set video settings
else if (relativeUrlLower.StartsWith("/savevideosetting"))
{
await _camera.Stop();
var videoSetting = new VideoSetting
{
VideoSubtype = VideoSubtypeHelper.Get(request.Body["VideoSubtype"].GetString()),
VideoResolution = (VideoResolution)request.Body["VideoResolution"].GetNumber(),
VideoQuality = request.Body["VideoQuality"].GetNumber(),
UsedThreads = (int)request.Body["UsedThreads"].GetNumber()
};
await ConfigurationFile.Write(videoSetting);
await _camera.Initialize(videoSetting);
_camera.Start();
HttpServerResponse.WriteResponseOk(outputStream);
}
//Get current camera frame
else if (relativeUrlLower.StartsWith("/videoframe"))
{
if (_camera.Frame != null)
{
var webSocket = new WebSocket(socket, request, _camera);
await webSocket.Start();
}
else
{
HttpServerResponse.WriteResponseError("Not camera fram available. Maybe there is an error or camera is not started.", outputStream);
}
}
//Get index.html page
else
{
await HttpServerResponse.WriteResponseFile(@"\Html\Index.html", HttpContentType.Html, outputStream);
}
}
