public LoadVideos()
{
// scan file system for videos
backgroundWorkerScanSource = new BackgroundWorkerScanSource();
backgroundWorkerScanSource.Initialize();
backgroundWorkerScanSource.backgroundWorkerScanSource_ProgressChanged += new ProgressChangedEventHandler(BackgroundWorker_ProgressChanged);
backgroundWorkerScanSource.backgroundWorkerScanSource_RunWorkerCompleted += new RunWorkerCompletedEventHandler(BackgroundWorkerScanSource_RunWorkerCompleted);
// filter existing list for videos
backgroundWorkerFilterSource = new BackgroundWorkerFilterSource();
backgroundWorkerFilterSource.Initialize();
backgroundWorkerFilterSource.backgroundWorkerFilterSource_ProgressChanged += new ProgressChangedEventHandler(BackgroundWorker_ProgressChanged);
backgroundWorkerFilterSource.backgroundWorkerFilterSource_RunWorkerCompleted += new RunWorkerCompletedEventHandler(BackgroundWorkerFilterSource_RunWorkerCompleted);
// build gallery images for video items loaded
buildGalleryImages = new BuildGalleryImages();
buildGalleryImages.backgroundWorkerBuildGalleryImages_RunWorkerCompleted += new RunWorkerCompletedEventHandler(BackgroundWorkerBuildGalleryImages_RunWorkerCompleted);
// calc stats for video items loaded
calcVideoInfoStats = new CalcVideoInfoStats();
calcVideoInfoStats.backgroundWorkerCalcStats_RunWorkerCompleted += new RunWorkerCompletedEventHandler(BackgroundWorkerCalcStats_RunWorkerCompleted);
}
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);
}
