private void Slider_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
RxVideo.Seek((int)Slider.Value);
if (active)
{
ReceiveVideoStream();
}
}
//Rxの1つ目、映像配信のObservableを呼ぶところ
private void ReceiveVideoStream()
{
vidDisposer = RxVideo.CaptureStream()
.Where(obj => !obj.Frame.Empty()) //もし空の画像が飛んで来たらシャットアウト
.Select(obj => //画像にちょっとおめかし
{
Cv2.PutText(obj.Frame, Path.GetFileNameWithoutExtension(_videoName), new OpenCvSharp.Point(30, 30), HersheyFonts.HersheyPlain, 2, new Scalar(0, 0, 70), 3);
return(obj);
})
.ObserveOnDispatcher() //別スレッドからUIにアクセスできないため、部分的にスレッドを戻す
.Subscribe(obj => //以下、メインスレッド
{
Slider.Maximum = obj.FrameCount;
Slider.Value = obj.CurrentFrameNumber;
Image.Source = obj.Frame.ToBitmapSource();
if (obj.CurrentFrameNumber == obj.FrameCount - 1)
{
RxVideo.Close();
Slider.Value = 0;
active = false;
ChangeStatus(Mode.Video);
}
});
}
private void OpenCloseButton_Click(object sender, RoutedEventArgs e)
{
var status = (Mode)ModeCombo.SelectedIndex + 1;
switch (status)
{
case Mode.Video:
if (!active)
{
var op = new OpenFileDialog();
op.Title = "動画ファイルを開く";
op.Filter = "(*.mp4)|*.mp4";
if (op.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
active = true;
_videoName = op.FileName;
ChangeStatus(status);
RxVideo.OpenFile(_videoName, 640, 480);
ReceiveVideoStream();
PauseButton.IsEnabled = true;
Slider.IsEnabled = true;
}
}
else
{
active = false;
ChangeStatus(status);
PauseButton.IsEnabled = false;
Slider.IsEnabled = false;
vidDisposer?.Dispose();
RxVideo.Close();
}
break;
case Mode.Chart:
if (!active)
{
active = true;
ChangeStatus(status);
var timeLoc = new OpenCvSharp.Point(1100, 30);
var sinLoc = new OpenCvSharp.Point(1100, 60);
var noisySinLoc = new OpenCvSharp.Point(1100, 90);
var fontscale = 1.0;
var color = new Scalar(100, 100, 255);
//Rxの2つ目、数値のストリームを受け取る部分
RxLogger.MakeStream(10)
.Select(obj =>
{
Cv2.PutText(obj.Frame, $"Time : {obj.Time:f1}", timeLoc, HersheyFonts.HersheySimplex, fontscale, color, 2);
Cv2.PutText(obj.Frame, $"Sin : {obj.Sin:f2}", sinLoc, HersheyFonts.HersheySimplex, fontscale, color, 2);
Cv2.PutText(obj.Frame, $"NoisySin : {obj.NoisySin:f2}", noisySinLoc, HersheyFonts.HersheySimplex, fontscale, color, 2);
return(obj.Frame);
})
.ObserveOnDispatcher()
.Subscribe(frame =>
{
Image.Source = frame.ToBitmapSource();
});
}
else
{
RxLogger.Close();
active = false;
ChangeStatus(status);
}
break;
default:
break;
}
}