private async Task <Windows.Storage.StorageFile> ReencodePhotoAsync(Windows.Storage.StorageFile tempStorageFile, Windows.Storage.FileProperties.PhotoOrientation photoRotation)
{
Windows.Storage.Streams.IRandomAccessStream inputStream = null;
Windows.Storage.Streams.IRandomAccessStream outputStream = null;
Windows.Storage.StorageFile photoStorage = null;
try
{
String newPhotoFilename = photoId + "_" + photoCount.ToString() + ".jpg";
inputStream = await tempStorageFile.OpenAsync(Windows.Storage.FileAccessMode.Read);
var decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(inputStream);
photoStorage = await currentFolder.CreateFileAsync(newPhotoFilename, Windows.Storage.CreationCollisionOption.GenerateUniqueName);
outputStream = await photoStorage.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);
outputStream.Size = 0;
var encoder = await Windows.Graphics.Imaging.BitmapEncoder.CreateForTranscodingAsync(outputStream, decoder);
var properties = new Windows.Graphics.Imaging.BitmapPropertySet();
properties.Add("System.Photo.Orientation", new Windows.Graphics.Imaging.BitmapTypedValue(photoRotation, Windows.Foundation.PropertyType.UInt16));
await encoder.BitmapProperties.SetPropertiesAsync(properties);
await encoder.FlushAsync();
}
finally
{
if (inputStream != null)
{
inputStream.Dispose();
}
if (outputStream != null)
{
outputStream.Dispose();
}
var asyncAction = tempStorageFile.DeleteAsync(Windows.Storage.StorageDeleteOption.PermanentDelete);
}
return(photoStorage);
}
async void Save(Stream stream, string filename, string type)
{
stream.Position = 0;
StorageFile stFile;
if (!(Windows.Foundation.Metadata.ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons")))
{
FileSavePicker savePicker = new FileSavePicker();
savePicker.DefaultFileExtension = type;
savePicker.SuggestedFileName = filename.Substring(0, filename.IndexOf("."));
if (type == ".pdf")
{
savePicker.FileTypeChoices.Add("Adobe PDF Document", new List <string>()
{
type
});
}
else
{
savePicker.FileTypeChoices.Add("JPG", new List <string>()
{
type
});
}
stFile = await savePicker.PickSaveFileAsync();
}
else
{
StorageFolder local = Windows.Storage.ApplicationData.Current.LocalFolder;
stFile = await local.CreateFileAsync(filename, CreationCollisionOption.ReplaceExisting);
}
if (stFile != null)
{
Windows.Storage.Streams.IRandomAccessStream fileStream = await stFile.OpenAsync(FileAccessMode.ReadWrite);
Stream st = fileStream.AsStreamForWrite();
st.Write((stream as MemoryStream).ToArray(), 0, (int)stream.Length);
st.Flush();
st.Dispose();
fileStream.Dispose();
}
}
public void Dispose()
{
internalStream.Dispose();
}