bool _canStop(object o)
{
MediaSegmentViewmodel segment = PlayWholeClip ? SelectedSegment : null;
IMedia media = LoadedMedia;
if (media == null)
{
return(false);
}
TimeSpan duration = PlayWholeClip ? media.Duration : (segment == null ? media.Duration : segment.Duration);
return(duration.Ticks >= _preview.FormatDescription.FrameTicks);
}
private void _mediaSegments_SegmentAdded(object sender, MediaSegmentEventArgs e)
{
Application.Current.Dispatcher.BeginInvoke((Action) delegate()
{
IPersistentMedia media = _loadedMedia as IPersistentMedia;
if (media != null && sender == media.MediaSegments)
{
var newVM = new MediaSegmentViewmodel(media, e.Segment);
_mediaSegments.Add(newVM);
if (e.Segment == _lastAddedSegment)
{
SelectedSegment = newVM;
}
}
});
}
private void CreateCommands()
{
CommandPause = new UICommand()
{
ExecuteDelegate = o =>
{
if (LoadedMedia == null)
{
LoadedMedia = _media ?? _event?.Media;
}
else
if (_preview.PreviewIsPlaying)
{
_preview.PreviewPause();
}
else
{
_preview.PreviewPosition = 0;
NotifyPropertyChanged(nameof(Position));
}
},
CanExecuteDelegate = o =>
{
IMedia media = Media ?? (Event != null ? Event.Media : null);
return((LoadedMedia != null && LoadedMedia.MediaStatus == TMediaStatus.Available) ||
_canLoad(media));
}
};
CommandPlay = new UICommand()
{
ExecuteDelegate = o =>
{
IMedia loadedMedia = LoadedMedia;
if (loadedMedia != null)
{
if (_preview.PreviewIsPlaying)
{
_preview.PreviewPause();
}
else
{
_preview.PreviewPlay();
}
}
else
{
CommandPause.Execute(null);
if (LoadedMedia != null)
{
_preview.PreviewPlay();
}
}
},
CanExecuteDelegate = o =>
{
IMedia media = Media ?? (Event != null ? Event.Media : null);
return((LoadedMedia != null && LoadedMedia.MediaStatus == TMediaStatus.Available) ||
_canLoad(media));
}
};
CommandStop = new UICommand()
{
ExecuteDelegate = o => _mediaUnload(),
CanExecuteDelegate = _canStop
};
CommandSeek = new UICommand()
{
ExecuteDelegate = param =>
{
if (_preview.PreviewIsPlaying)
{
_preview.PreviewPause();
}
long seekFrames;
switch ((string)param)
{
case "fframe":
seekFrames = 1;
break;
case "rframe":
seekFrames = -1;
break;
case "fsecond":
seekFrames = FramesPerSecond;
break;
case "rsecond":
seekFrames = -FramesPerSecond;
break;
default:
seekFrames = 0;
break;
}
_preview.PreviewPosition = _preview.PreviewPosition + seekFrames;
NotifyPropertyChanged(nameof(Position));
},
CanExecuteDelegate = _canStop
};
CommandCopyToTcIn = new UICommand()
{
ExecuteDelegate = o => TcIn = Position,
CanExecuteDelegate = _canStop
};
CommandCopyToTcOut = new UICommand()
{
ExecuteDelegate = o => TcOut = Position,
CanExecuteDelegate = _canStop
};
CommandSaveSegment = new UICommand()
{
ExecuteDelegate = o =>
{
MediaSegmentViewmodel msVm = _selectedSegment;
IPersistentMedia media = LoadedMedia as IPersistentMedia;
if (msVm == null)
{
_lastAddedSegment = media.MediaSegments.Add(TcIn, TcOut, SelectedSegmentName);
_lastAddedSegment.Save();
}
else
{
msVm.TcIn = TcIn;
msVm.TcOut = TcOut;
msVm.SegmentName = SelectedSegmentName;
msVm.Save();
}
},
CanExecuteDelegate = o =>
{
var ss = SelectedSegment;
return(LoadedMedia != null &&
((ss == null && !string.IsNullOrEmpty(SelectedSegmentName)) ||
(ss != null && (ss.IsModified || SelectedSegmentName != ss.SegmentName || TcIn != ss.TcIn || TcOut != ss.TcOut))));
}
};
CommandDeleteSegment = new UICommand()
{
ExecuteDelegate = o =>
{
MediaSegmentViewmodel msVm = _selectedSegment;
if (msVm != null)
{
msVm.MediaSegment.Delete();
}
},
CanExecuteDelegate = o => _selectedSegment != null
};
CommandNewSegment = new UICommand()
{
ExecuteDelegate = o =>
{
var media = LoadedMedia as IPersistentMedia;
if (media != null)
{
_lastAddedSegment = media.MediaSegments.Add(TcIn, TcOut, Common.Properties.Resources._title_NewSegment);
}
},
};
CommandSetSegmentNameFocus = new UICommand()
{
ExecuteDelegate = o =>
{
IsSegmentNameFocused = true;
NotifyPropertyChanged(nameof(IsSegmentNameFocused));
},
};
}
