protected void LoadThumbnailFromMediaInformaion(IMediaItemInfo item, IMediaInformation mediaInformation)
{
if (mediaInformation != null)
{
//재생 시간 설정
item.Duration = mediaInformation.NaturalDuration;
mediaInformation.GetBitmapPixelBuffer(ThumbnailSize).Completed = (bufferResult, bufferStatus) =>
{
if (bufferStatus == AsyncStatus.Completed)
{
var buffer = bufferResult.GetResults();
if (buffer != null)
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
WriteableBitmap wb = BitmapFactory.New(0, 0);
//wb.FromPixelBuffer(buffer, (int)ThumbnailSize.Width, (int)ThumbnailSize.Height).AsAsyncOperation().Completed = async (bitmap, bitmapStatus) =>
BitmapFactory.FromPixelBuffer(buffer, (int)ThumbnailSize.Width, (int)ThumbnailSize.Height).AsAsyncOperation().Completed = async(bitmap, bitmapStatus) =>
{
if (bitmapStatus == AsyncStatus.Completed)
{
var newWb = bitmap.GetResults();
item.ImageItemsSource = newWb;
//썸네일 저장
if (item is StorageItemInfo)
{
await SaveThumbail(item as StorageItemInfo, buffer.ToArray());
}
else if (item is NetworkItemInfo)
{
await SaveThumbail(item as NetworkItemInfo, buffer.ToArray());
}
}
};
});
}
}
mediaInformation = null;
};
}
}
protected async Task <ImageSource> GetThumbnailAsync(IMediaItemInfo item, IMediaInformation mediaInformation)
{
ImageSource imageSource = null;
if (mediaInformation != null)
{
var buffer = await mediaInformation.GetBitmapPixelBuffer(ThumbnailSize);
if (buffer != null)
{
await DispatcherHelper.RunAsync(async() =>
{
//imageSource = await BitmapFactory.New(0, 0).FromPixelBuffer(buffer, (int)ThumbnailSize.Width, (int)ThumbnailSize.Height);
imageSource = await BitmapFactory.FromPixelBuffer(buffer, (int)ThumbnailSize.Width, (int)ThumbnailSize.Height);
//PNG로 압축 및 DB저장
item.Duration = mediaInformation.NaturalDuration;
//썸네일 저장
if (item is StorageItemInfo)
{
await SaveThumbail(item as StorageItemInfo, buffer.ToArray());
}
else if (item is NetworkItemInfo)
{
await SaveThumbail(item as NetworkItemInfo, buffer.ToArray());
}
//비동기 처리 임으로 여기서 초기화 해야함.
mediaInformation = null;
});
}
else
{
mediaInformation = null;
}
}
return(imageSource);
}