public static async Task SecretData(StorageFile file)
{
IRandomAccessStream ram;
using (ram = await file.OpenAsync(FileAccessMode.ReadWrite))
{
GetData.Decoder = await BitmapDecoder.CreateAsync(ram);
BitmapPropertySet prop = await GetData.Decoder.BitmapProperties.GetPropertiesAsync(new string[] { Data.Misc.Secret });
if (prop.ContainsKey(Data.Misc.Secret) == true)
{
GetData.Reset_Data("Extract", "Secret");
string[] secret = ((string)prop[Data.Misc.Secret].Value).Split('|');
GetData.SecretData.Add(Data.Misc.DataPassword, secret[0]);
GetData.SecretData.Add(Data.Misc.DataType, secret[1]);
GetData.SecretData.Add(Data.Misc.DataNameFile, secret[2]);
GetData.SecretData.Add(Data.Misc.DataExtension, secret[3]);
GetData.SecretData.Add(Data.Misc.DataSecret, secret[4]);
}
else
{
GetData.Reset_Data("Extract", "Secret");
}
}
}
/// <summary>
/// Asynchronously attempts to get the oriented dimensions and EXIF orientation from the image file.
/// Sets member variables instead of returning a value with the Task.
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
private async Task GetImageInformationAsync(StorageFile file)
{
using (IRandomAccessStream stream = await file.OpenAsync(FileAccessMode.Read))
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(stream);
// The orientedPixelWidth and Height members provide the image dimensions
// reflecting any EXIF orientation.
m_displayHeightNonScaled = decoder.OrientedPixelHeight;
m_displayWidthNonScaled = decoder.OrientedPixelWidth;
try
{
// Property access using BitmapProperties is similar to using
// Windows.Storage.FileProperties (see Scenario 1); BitmapProperties accepts
// property keys such as "System.Photo.Orientation".
// The EXIF orientation flag can be also be read using native metadata queries
// such as "/app1/ifd/{ushort=274}" (JPEG) or "/ifd/{ushort=274}" (TIFF).
string[] requestedProperties = { "System.Photo.Orientation" };
BitmapPropertySet retrievedProperties =
await decoder.BitmapProperties.GetPropertiesAsync(requestedProperties);
// Check to see if the property exists in the file.
if (retrievedProperties.ContainsKey("System.Photo.Orientation"))
{
// EXIF orientation ("System.Photo.Orientation") is stored as a 16-bit unsigned integer.
m_exifOrientation = Helpers.ConvertToPhotoOrientation(
(ushort)retrievedProperties["System.Photo.Orientation"].Value
);
}
}
catch (Exception err)
{
switch (err.HResult)
{
// If the file format does not support properties continue without applying EXIF orientation.
case WINCODEC_ERR_UNSUPPORTEDOPERATION:
case WINCODEC_ERR_PROPERTYNOTSUPPORTED:
m_disableExifOrientation = true;
break;
default:
throw err;
}
}
}
}
