public async Task Fill(StorageFolder mainfolder)
{
if (SourcePrivate.Count > 0)
{
SourcePrivate.Clear();
}
MainFolder = mainfolder;
IndexedState folderIndexedState = await MainFolder.GetIndexedStateAsync();
if (folderIndexedState == IndexedState.NotIndexed || folderIndexedState == IndexedState.Unknown)
{
//Only possible in indexed directories.
}
else
{
//this method only works for indexed stuff ( known folders only )
//For More Details visit https://blogs.msdn.microsoft.com/adamdwilson/2017/12/20/fast-file-enumeration-with-partially-initialized-storagefiles/
await FillUpFolders();
FillAds();
await FillUpFiles();
}
}
private async Task FillUpFiles()
{
uint index = 0;
var VideoQuery = FileHelper.GetVideoFilesQuery(MainFolder, _thumbnailReqestedSize);
IReadOnlyList <StorageFile> files = await VideoQuery.GetFilesAsync(index, _stepSize);
index += _stepSize;
while (files.Count != 0)
{
var fileTask = VideoQuery.GetFilesAsync(index, _stepSize).AsTask();
foreach (StorageFile file in files)
{
var vv = new Video
{
MyVideoFile = file,
Thumbnail = new BitmapImage(new Uri("ms-appx:///Assets/SplashScreen.scale-200.png"))
};
SourcePrivate.Add(vv);
//set duration
IDictionary <string, object> size = await file.Properties.RetrievePropertiesAsync(
FileHelper.RequiredVideoProperties);
var ticks = Convert.ToInt64(size["System.Media.Duration"]);
vv.Duration = TimeSpan.FromTicks(ticks).ToString(@"hh\:mm\:ss");
//set asyncronosly thumbnail
BitmapImage bitm = null;
using (var imgSource = await vv.MyVideoFile?.GetScaledImageAsThumbnailAsync(ThumbnailMode.VideosView, _thumbnailReqestedSize, ThumbnailOptions.UseCurrentScale))
{
if (imgSource != default(object))//bsically null checking in a better way
{
bitm = new BitmapImage();
await bitm.SetSourceAsync(imgSource);
}
}
if (!(bitm is default(BitmapImage)))
{
vv.Thumbnail = bitm;
}
}
files = await fileTask;
index += _stepSize;
}
}
private async Task FillUpFolders()
{
uint index = 0;
var VideoQuery = FileHelper.GetVideoFoldersQuery(MainFolder);
IReadOnlyList <StorageFolder> folders = await VideoQuery.GetFoldersAsync(index, _stepSize);
index += _stepSize;
while (folders.Count != 0)
{
var folderTask = VideoQuery.GetFoldersAsync(index, _stepSize).AsTask();
foreach (StorageFolder folder in folders)
{
var vv = new Folder
{
MyStorageFolder = folder
};
SourcePrivate.Add(vv);
}
folders = await folderTask;
index += _stepSize;
}
}
private void FillAds()
{
var ad = new NativeAdData();
SourcePrivate.Add(ad);
}
