public static void ReadMP3CoverArt(string source, Guid mediaViewModelId, Delegates.GenerateThumbnailDone setter)
{
TagLib.File file = TagLib.File.Create(source);
if (file.Tag.Pictures.Length >= 1)
{
byte[] bytes = file.Tag.Pictures[0].Data.Data;
var bitmapImage = new BitmapImage();
bitmapImage.BeginInit();
bitmapImage.StreamSource = new MemoryStream(bytes);
bitmapImage.EndInit();
setter((BitmapSource)bitmapImage.GetCurrentValueAsFrozen(), mediaViewModelId, null);
}
}
public static void GenerateThumbnailOfPicture(string source, Guid mediaViewModelId, Delegates.GenerateThumbnailDone setter)
{
BitmapSource ret;
//BitmapMetadata meta = null;
//tentative de creation du thumbnail via Bitmap frame : très rapide et très peu couteux en mémoire !
BitmapFrame frame = BitmapFrame.Create(new Uri(source), BitmapCreateOptions.DelayCreation, BitmapCacheOption.None);
if (frame.Thumbnail == null) //echec, on tente avec BitmapImage (plus lent et couteux en mémoire)
{
BitmapImage image = new BitmapImage();
image.DecodePixelHeight = 90; //on limite à 90px de hauteur
image.BeginInit();
image.UriSource = new Uri(source);
image.CacheOption = BitmapCacheOption.None;
image.CreateOptions = BitmapCreateOptions.DelayCreation; //important pour les performances
image.EndInit();
if (image.CanFreeze) //pour éviter les memory leak
{
image.Freeze();
}
ret = image;
}
else
{
//récupération des métas de l'image
//meta = frame.Metadata as BitmapMetadata;
ret = frame.Thumbnail;
}
#region TheBlackReverand : on deactive la gestion de l'orientation dans 1 premier temps
// public enum ExifOrientations
// {
// None = 0,
// Normal = 1,
// HorizontalFlip = 2,
// Rotate180 = 3,
// VerticalFlip = 4,
// Transpose = 5,
// Rotate270 = 6,
// Transverse = 7,
// Rotate90 = 8
// }
//if ((meta != null) && (ret != null)) //si on a des meta, tentative de récupération de l'orientation
//{
// if (meta.GetQuery("/app1/ifd/{ushort=274}") != null)
// {
// orientation = (ExifOrientations)Enum.Parse(typeof(ExifOrientations), meta.GetQuery("/app1/ifd/{ushort=274}").ToString());
// }
// double angle = 0;
// switch (orientation)
// {
// case ExifOrientations.Rotate90:
// angle = -90;
// break;
// case ExifOrientations.Rotate180:
// angle = 180;
// break;
// case ExifOrientations.Rotate270:
// angle = 90;
// break;
// }
// if (angle != 0) //on doit effectuer une rotation de l'image
// {
// ret = new TransformedBitmap(ret.Clone(), new RotateTransform(angle));
// ret.Freeze();
// }
//}
#endregion
if (ret != null)
{
setter((BitmapSource)ret.GetCurrentValueAsFrozen(), mediaViewModelId, null);
}
}
public static void CaptureScreen(Uri source, Guid mediaViewModelId, Dictionary <TimeSpan, object> captureList, double scale, Delegates.GenerateThumbnailDone finalWorkerPrimary, Delegates.GenerateThumbnailDone finalWorkerThumbnail)
{
Mutex mutexLock = new Mutex(false, source.GetHashCode().ToString());
mutexLock.WaitOne();
MediaPlayer player = new MediaPlayer {
IsMuted = true, ScrubbingEnabled = true
};
player.Open(source);
player.Pause();
foreach (var pair in captureList)
{
TimeSpan timeSpan = pair.Key;
object timeSpanId = pair.Value;
player.Position = timeSpan;
int width = 0, height = 0, cpt = 0;
// Afin de compenser les temps d'acces on accord 10 essai avec 1s entre chaque essai
while (width == 0 || height == 0 && cpt < 10)
{
Thread.Sleep(1000);
width = player.NaturalVideoWidth;
height = player.NaturalVideoHeight;
cpt++;
}
RenderTargetBitmap rtb = new RenderTargetBitmap(width, height, 96, 96, PixelFormats.Pbgra32);
DrawingVisual dv = new DrawingVisual();
using (DrawingContext dc = dv.RenderOpen())
{
dc.DrawVideo(player, new Rect(0, 0, width, height));
}
rtb.Render(dv);
var frame = BitmapFrame.Create(rtb).GetCurrentValueAsFrozen();
if (finalWorkerPrimary != null)
{
finalWorkerPrimary(frame as BitmapFrame, mediaViewModelId, timeSpanId);
}
if (scale > 0 && finalWorkerThumbnail != null && frame is BitmapSource)
{
var thumbnailFrame = BitmapFrame.Create(new TransformedBitmap(frame as BitmapSource, new ScaleTransform(scale, scale))).GetCurrentValueAsFrozen();
finalWorkerThumbnail(thumbnailFrame as BitmapFrame, mediaViewModelId, timeSpanId);
}
}
player.Close();
mutexLock.ReleaseMutex();
}
public static void CaptureScreen(string source, Guid mediaViewModelId, TimeSpan timeSpan, object timeSpanId, double scale, Delegates.GenerateThumbnailDone finalWorkerPrimary, Delegates.GenerateThumbnailDone finalWorkerThumbnail)
{
CaptureScreen(new Uri(source), mediaViewModelId, new Dictionary <TimeSpan, object> {
{ timeSpan, timeSpanId }
}, scale, finalWorkerPrimary, finalWorkerThumbnail);
}
public static void CaptureScreen(Uri source, Guid mediaViewModelId, Dictionary <TimeSpan, object> captureList, Delegates.GenerateThumbnailDone finalWorkerPrimary)
{
CaptureScreen(source, mediaViewModelId, captureList, -1, finalWorkerPrimary, null);
}
public static void CaptureScreen(Uri source, Guid mediaViewModelId, TimeSpan timeSpan, object timeSpanId, Delegates.GenerateThumbnailDone finalWorkerPrimary)
{
CaptureScreen(source, mediaViewModelId, timeSpan, timeSpanId, -1, finalWorkerPrimary, null);
}
