public ResultCode SaveScreenShot(byte[] screenshotData, ulong appletResourceUserId, ulong titleId, out ApplicationAlbumEntry applicationAlbumEntry)
{
applicationAlbumEntry = default;
if (screenshotData.Length == 0)
{
return(ResultCode.NullInputBuffer);
}
/*
* // NOTE: On our current implementation, appletResourceUserId starts at 0, disable it for now.
* if (appletResourceUserId == 0)
* {
* return ResultCode.InvalidArgument;
* }
*/
/*
* // Doesn't occur in our case.
* if (applicationAlbumEntry == null)
* {
* return ResultCode.NullOutputBuffer;
* }
*/
if (screenshotData.Length >= 0x384000)
{
DateTime currentDateTime = DateTime.Now;
applicationAlbumEntry = new ApplicationAlbumEntry()
{
Size = (ulong)Unsafe.SizeOf <ApplicationAlbumEntry>(),
TitleId = titleId,
AlbumFileDateTime = new AlbumFileDateTime()
{
Year = (ushort)currentDateTime.Year,
Month = (byte)currentDateTime.Month,
Day = (byte)currentDateTime.Day,
Hour = (byte)currentDateTime.Hour,
Minute = (byte)currentDateTime.Minute,
Second = (byte)currentDateTime.Second,
UniqueId = 0
},
AlbumStorage = AlbumStorage.Sd,
ContentType = ContentType.Screenshot,
Padding = new Array5 <byte>(),
Unknown0x1f = 1
};
using (SHA256 sha256Hash = SHA256.Create())
{
// NOTE: The hex hash is a HMAC-SHA256 (first 32 bytes) using a hardcoded secret key over the titleId, we can simulate it by hashing the titleId instead.
string hash = BitConverter.ToString(sha256Hash.ComputeHash(BitConverter.GetBytes(titleId))).Replace("-", "").Remove(0x20);
string folderPath = Path.Combine(_sdCardPath, "Nintendo", "Album", currentDateTime.Year.ToString("00"), currentDateTime.Month.ToString("00"), currentDateTime.Day.ToString("00"));
string filePath = GenerateFilePath(folderPath, applicationAlbumEntry, currentDateTime, hash);
// TODO: Handle that using the FS service implementation and return the right error code instead of throwing exceptions.
Directory.CreateDirectory(folderPath);
while (File.Exists(filePath))
{
applicationAlbumEntry.AlbumFileDateTime.UniqueId++;
filePath = GenerateFilePath(folderPath, applicationAlbumEntry, currentDateTime, hash);
}
// NOTE: The saved JPEG file doesn't have the limitation in the extra EXIF data.
Image.LoadPixelData <Rgba32>(screenshotData, 1280, 720).SaveAsJpegAsync(filePath);
}
return(ResultCode.Success);
}
return(ResultCode.NullInputBuffer);
}
private string GenerateFilePath(string folderPath, ApplicationAlbumEntry applicationAlbumEntry, DateTime currentDateTime, string hash)
{
string fileName = $"{currentDateTime:yyyyMMddHHmmss}{applicationAlbumEntry.AlbumFileDateTime.UniqueId:00}-{hash}.jpg";
return(Path.Combine(folderPath, fileName));
}
