/// <summary>
/// Download thumbnails
/// </summary>
async private void GetThumbnails()
{
if (_getThumbnailQueue.Count == 0)
{
return;
}
var thumbFolder = new DirectoryInfo(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "ThetaImage", "thumbnails"));
thumbFolder.Create();
// Get list of thumbnails already downloaded
var existingFiles = thumbFolder.EnumerateFiles().Where(file => file.Extension.Equals(".jpg", StringComparison.CurrentCultureIgnoreCase) ||
file.Extension.Equals(".jpeg", StringComparison.CurrentCultureIgnoreCase)).ToList();
var localFiles = new Dictionary <string, FileInfo>();
foreach (var file in existingFiles)
{
localFiles.Add(file.Name, file);
}
// For each entry...
while (_getThumbnailQueue.Count > 0)
{
var anEntry = _getThumbnailQueue.Dequeue();
if (localFiles.ContainsKey(anEntry.Data.Name))
{
// if the thumbnail is already downloaded, use that .
anEntry.LocalThumbFile = localFiles[anEntry.Data.Name].FullName;
localFiles.Remove(anEntry.Data.Name);
}
else
{
// Otherwise get it from camera
var param = new ListFilesParam()
{
FileType = ThetaFileType.Image, EntryCount = 1, Detail = true, StartPosition = anEntry.EntryNo
};
try
{
var res = await _theta.ThetaApi.ListFilesAsync(param);
if (res.Entries.Length == 0)
{
continue;
}
var result = res.Entries[0];
using (var memStream = new MemoryStream())
{
await memStream.WriteAsync(result.ThumbnailData, 0, result.ThumbnailData.Length);
var newFile = new FileInfo(Path.Combine(thumbFolder.FullName, anEntry.Data.Name));
using (Stream aStream = newFile.Open(FileMode.CreateNew, FileAccess.Write))
{
memStream.Seek(0, SeekOrigin.Begin);
memStream.CopyTo(aStream);
}
anEntry.LocalThumbFile = newFile.FullName;
}
}
catch (System.Net.WebException)
{
break;
}
catch (Exception)
{
continue;
}
}
await Task.Delay(1);
}
// Delete files that are no longer exist inside the camera
foreach (var key in localFiles.Keys)
{
try
{
localFiles[key].Delete();
}
catch (IOException)
{
// This happens when we delete pictures.
// It is too soon to delete thumbnails. Safe to delete next time.
}
}
}
/// <summary>
/// Reload all files
/// </summary>
public async Task ReloadAllFilesAsync(bool force = true)
{
if (!this.Dispatcher.CheckAccess())
{
await this.Dispatcher.BeginInvoke(new Action(async() =>
{
await ReloadAllFilesAsync(force);
}));
return;
}
if (force || _deviceImages.Count == 0)
{
_deviceImages.Clear();
while (true)
{
var param = new ListFilesParam()
{
FileType = ThetaFileType.Image, EntryCount = 50, StartPosition = _deviceImages.Count, Detail = false
};
var res = await _theta.ThetaApi.ListFilesAsync(param);
foreach (var anEntry in res.Entries)
{
var wrapper = new FileEntryWrapper()
{
Data = anEntry, EntryNo = _deviceImages.Count
};
_deviceImages.Add(wrapper);
_getThumbnailQueue.Enqueue(wrapper);
}
if (_deviceImages.Count >= res.TotalEntries)
{
break;
}
}
}
var di = new DirectoryInfo(txtFolder.Text);
// Get list of thumbnails already downloaded
var existingFiles = di.EnumerateFiles().Where(file => file.Extension.Equals(".jpg", StringComparison.CurrentCultureIgnoreCase) ||
file.Extension.Equals(".jpeg", StringComparison.CurrentCultureIgnoreCase)).ToList();
var localFiles = new Dictionary <string, FileInfo>();
foreach (var file in existingFiles)
{
localFiles.Add(file.Name, file);
}
foreach (var anEntry in _deviceImages)
{
if (localFiles.ContainsKey(anEntry.Data.Name))
{
anEntry.DownloadStatus = DOWNLOAD_STATUS.DOWNLOADED;
}
}
IEnumerable <FileEntryWrapper> filteredEntries = null;
switch (cmbImageFilter.SelectedValue)
{
case PHOTO_FILTER.DOWNLOADED:
filteredEntries = from anEntry in _deviceImages where anEntry.DownloadStatus == DOWNLOAD_STATUS.DOWNLOADED select anEntry;
break;
case PHOTO_FILTER.NOT_DOWNLOADED:
filteredEntries = from anEntry in _deviceImages where anEntry.DownloadStatus != DOWNLOAD_STATUS.DOWNLOADED select anEntry;
break;
case PHOTO_FILTER.ALL:
default:
filteredEntries = _deviceImages;
break;
}
var view = (CollectionView)CollectionViewSource.GetDefaultView(filteredEntries);
var groupDesc = new PropertyGroupDescription("SimpleDate");
view.GroupDescriptions.Add(groupDesc);
groupDesc.SortDescriptions.Add(new SortDescription("Name", ListSortDirection.Descending));
lstFiles.DataContext = filteredEntries;
GetThumbnails();
}