public RawImage ReadRawImageFromDatabase(ThumbnailEntryModel thumbnail)
{
lock (_fileOperationLock)
{
if (_fileStream == null)
{
_fileStream = File.Open(_fileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);
}
_fileStream.Lock(thumbnail.FilePosition, thumbnail.Length);
_fileStream.Position = thumbnail.FilePosition;
var ms = new MemoryStream();
_fileStream.CopyTo(ms, thumbnail.Length);
ms.Flush();
byte[] imageData = ms.ToArray();
ms.Close();
ms.Dispose();
_fileStream.Unlock(thumbnail.FilePosition, thumbnail.Length);
return(new RawImage(imageData));
}
}
private RawImage LoadImageFromDatabase(string filename)
{
ThumbnailEntryModel thumbnail = _thumbnailRepository.GeThumbnailEntry(filename);
try
{
return(_fileManager.ReadRawImageFromDatabase(thumbnail));
}
catch (Exception ex)
{
using (LogContext.PushProperty("Data", thumbnail))
{
Log.Error(ex, "LoadImageFromDatabase failed");
}
}
return(null);
}
private int PerformThumbnailScan(string path, IProgress <ThumbnailScanProgress> progress)
{
var files = Directory.GetFiles(path);
if (!Directory.Exists(path))
{
return(0);
}
if (!path.EndsWith("\\"))
{
path += "\\";
}
int filesToScan = files.Length;
int scannedFiles = 0;
if (_abortScan)
{
return(0);
}
foreach (string fullPath in files)
{
string fileName = GeneralConverters.GetFileNameFromPath(fullPath);
if (_abortScan)
{
break;
}
if (!_fileNameRegExp.IsMatch(fileName) || _thumbnailRepository.IsCached(fullPath))
{
continue;
}
Image img = null;
try
{
img = _thumbnailRepository.GetThumbnailImage(fullPath);
}
catch (Exception exception)
{
Log.Error(exception, "Error loading file: " + fullPath);
}
if (img == null)
{
continue;
}
var fileInfo = new FileInfo(fullPath);
var thumbnail = new ThumbnailEntryModel
{
Date = DateTime.Now,
SourceImageDate = fileInfo.LastWriteTime,
FileName = fileName,
Directory = path,
SourceImageLength = fileInfo.Length,
};
IsModified = true;
// Update progress
scannedFiles++;
progress?.Report(new ThumbnailScanProgress {
TotalAmountOfFiles = filesToScan, ScannedFiles = scannedFiles
});
}
return(scannedFiles);
}
