public List <VideoInfo> BuildImages(List <VideoInfo> videoInfos, DoWorkEventArgs doWorkEvent)
{
if (BuildGalleryImages.ThumbnailsAlreadySet())
{
return(videoInfos);
}
// Abort the operation if the user has canceled.
// Note that a call to CancelAsync may have set
// CancellationPending to true just after the
// last invocation of this method exits, so this
// code will not have the opportunity to set the
// DoWorkEventArgs.Cancel flag to true. This means
// that RunWorkerCompletedEventArgs.Cancelled will
// not be set to true in your RunWorkerCompleted
// event handler. This is a race condition.
if (backgroundWorker.CancellationPending)
{
doWorkEvent.Cancel = true;
return(null);
}
int nbrVideoInfos = videoInfos.Count();
int nbrPosters = 0;
foreach (VideoInfo videoInfo in videoInfos)
{
if (videoInfo.filter)
{
if (videoInfo.files.posterThumbnail != null)
{
videoInfo.files.posterThumbnail.Dispose();
}
continue;
}
// no files or no video, so skip
if (videoInfo.files == null || videoInfo.files.video == null)
{
continue;
}
GalleryImageThumbnailInfo galleryImageThumbnailInfo = BuildGalleryImages.GetCachedThumbnail(videoInfo);
videoInfo.files.posterThumbnail = galleryImageThumbnailInfo.thumbnail;
nbrPosters++;
// Thread.Sleep(1000); // dev
// meh, smooth out update progress
if (nbrPosters % 10 == 0)
{
percentComplete = 100 - (int)Math.Floor((decimal)(nbrVideoInfos - nbrPosters) / nbrVideoInfos * 100);
string progressMessage = "";
if (galleryImageThumbnailInfo.fromCache)
{
progressMessage += "Using Gallery cache";
}
else if (galleryImageThumbnailInfo.createdCache)
{
progressMessage += "Creating Gallery cache";
}
else
{
progressMessage += "Building Gallery";
}
progressMessage += "..";
backgroundWorker.ReportProgress(percentComplete, progressMessage);
if (backgroundWorker.CancellationPending)
{
doWorkEvent.Cancel = true;
return(null);
}
}
}
percentComplete = 100;
backgroundWorker.ReportProgress(percentComplete, "Completed Gallery");
// meh, so completed shows
Thread.Sleep(500);
return(videoInfos);
}
public static GalleryImageThumbnailInfo GetCachedThumbnail(VideoInfo videoInfo)
{
GalleryImageThumbnailInfo galleryImageThumbnailInfo = new GalleryImageThumbnailInfo();
galleryImageThumbnailInfo.fromCache = false;
galleryImageThumbnailInfo.createdCache = false;
galleryImageThumbnailInfo.thumbnail = null;
Image thumbnail = null;
string cachedThumbnailFullName = MyFile.EnsureDataFile("poster_" + videoInfo.hash, "jpg", @"cache\gallery");
if (Config.settings.gallery.cachePosterThumbnails && File.Exists(cachedThumbnailFullName))
{
// use file stream so files not locked
FileStream fileStream = new FileStream(cachedThumbnailFullName, FileMode.Open, FileAccess.Read);
thumbnail = Image.FromStream(fileStream);
fileStream.Close();
// thumbnail = Image.FromFile(cachedThumbnailFile); // locks file
galleryImageThumbnailInfo.fromCache = true;
}
else if (videoInfo.files.poster == null)
{
thumbnail = null;
}
else
{
VideoItemFile videoItemFile = videoInfo.files.poster;
string posterFullName = videoInfo.GetFullName(videoItemFile);
// skip images smaller than y or larger than x
if (videoItemFile.Length < 100)
{
MyLog.Add("Get Thumbnail: Skipping " + posterFullName + " " + MyFile.FormatSize(videoItemFile.Length));
thumbnail = null;
}
if (videoItemFile.Length > 5 * 1048576)
{
MyLog.Add("Get Thumbnail: Skipping " + posterFullName + " " + MyFile.FormatSize(videoItemFile.Length));
thumbnail = null;
}
try
{
if (!File.Exists(posterFullName))
{
thumbnail = null;
}
else
{
// size of thumbails .. TODO make a config setting
thumbnail = MyImage.GetThumbnail(posterFullName, 165, 250, Color.Black);
if (Config.settings.gallery.cachePosterThumbnails && thumbnail != null)
{
// clone image so files not locked
if (MyImage.SaveJpgImage((Image)thumbnail.Clone(), cachedThumbnailFullName))
{
galleryImageThumbnailInfo.createdCache = true;
}
}
}
}
catch (OutOfMemoryException)
{
// Image.FromFile will throw this if file is invalid/corrupted; Don't ask me why
MyLog.Add("Invalid Image; Unable to read " + posterFullName + " " + MyFile.FormatSize(videoItemFile.Length));
thumbnail = null;
}
catch (Exception ei)
{
MyLog.Add(ei.ToString());
thumbnail = null;
}
}
galleryImageThumbnailInfo.thumbnail = thumbnail;
return(galleryImageThumbnailInfo);
}