private static void PropertyChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (e.Property.Name != "HostVideo")
{
return;
}
VideoPlayer that = d as VideoPlayer;
/*Clear resource at first*/
that._bitmap = null;
if (e.NewValue != null)
{
VideoVideoModel hostVideo = e.NewValue as VideoVideoModel;
that._bitmap = new WriteableBitmap(
hostVideo.Width,
hostVideo.Height,
96.0, 96.0,
PixelFormats.Bgr24,
null);
that._lastFrameTag = int.MinValue;
that.screen.Source = that._bitmap;
}
}
private void ClearData()
{
Video.Dispose();
Video = null;
_metadata = null;
_activeIdSet.Clear();
_thumbnails.Clear();
ActiveIds = null;
VideoUrl = null;
MetadataUrl = null;
ThumbnailUrls = null;
}
private void LoadData(object sender, DoWorkEventArgs e)
{
VideoVideoModel video = new VideoVideoModel(_videoUrl, _videoFilters);
Task task = video.LoadAsync();
_metadata = Metadata.Parse(_metadataUrl);
string[] thumbnailUrls = _thumbnailUrls.Split(new string[] { "; " }, StringSplitOptions.None);
if (thumbnailUrls.Length != 0)
{
string folder = Path.GetDirectoryName(thumbnailUrls[0]);
for (int i = 1; i < thumbnailUrls.Length; i++)
{
thumbnailUrls[i] = Path.Combine(folder, thumbnailUrls[i]);
}
}
List <ThumbnailViewModel> thumbnails = new List <ThumbnailViewModel>();
foreach (string url in thumbnailUrls)
{
if (!File.Exists(url))
{
continue;
}
string fileName = Path.GetFileNameWithoutExtension(url);
int id = int.Parse(fileName.Substring(fileName.Length - 6, 6));
ThumbnailViewModel thumabnail = new ThumbnailViewModel(id, _metadata.GetObjectTimestamp(id), url);
thumabnail.CheckChanged += (s, _) =>
{
UpdateActiveIds();
Video.StopBy((s as ThumbnailViewModel).FrameTimestamp, false);
};
thumabnail.Clicked += (s, _) =>
{
Video.StopBy((s as ThumbnailViewModel).FrameTimestamp, true);
};
thumbnails.Add(thumabnail);
_activeIdSet.Add(id);
}
ActiveIds = string.Join(", ", _activeIdSet);
e.Result = thumbnails;
task.Wait();
Video = video;
}
