/**
* 動画ファイルをロードして、フレームサムネイルを抽出する。
*/
private async void LoadMediaSource(StorageFile source)
{
Ready = false;
//
Error.Reset();
mPlayer.Source = null;
mPreviewing = false;
mTrimmingSlider.Reset();
mFrameListView.Reset();
mExtractor.Cancel();
mFrameListView.ShowCurrentTick = false;
mComposition.Clips.Clear();
if (null != source)
{
mOriginalSource = MediaSource.CreateFromStorageFile(source);
var loader = await WvvMediaLoader.LoadAsync(mPlayer, mOriginalSource, this);
if (loader.Opened)
{
TotalRange = loader.TotalRange;
VideoSize = loader.VideoSize;
try
{
var clip = await MediaClip.CreateFromFileAsync(source);
mComposition.Clips.Add(clip.Clone());
Ready = true;
await mExtractor.ExtractAsync(clip, (s, i, img) =>
{
mFrameListView.Frames[i] = img;
},
(s, img) =>
{
mFrameListView.FrameListHeight = mExtractor.ThumbnailHeight;
for (int i = 0; i < ThumbnailCount; i++)
{
mFrameListView.Frames.Add(img);
}
mFrameListView.ShowCurrentTick = true;
});
}
catch (Exception e)
{
CmLog.error(e, "WvvTrimmingView.LoadMediaSource: Error");
Error.SetError(e);
}
}
else // not opened.
{
Error.CopyFrom(loader.Error);
}
}
}
private void OnUnloaded(object sender, RoutedEventArgs e)
{
mPlayer.Error.PropertyChanged -= Error_PropertyChanged;
mExtractor.Cancel();
Reset();
}