private Stream GetImageThumbnailStream(string type, string imageGuid, string width = null, string height = null)
{
if (type != "T" && type != "R" && type != "M")
{
throw new Exception("Unsupported image type");
}
idCatalogItem catalogItem = null;
Stream imageStream = null;
using (TransactionScope scope = new TransactionScope(TransactionScopeOption.Required, readUncommittedTransactionOptions))
{
catalogItem = db.idCatalogItem.Include("idFilePath").Single(x => x.GUID == imageGuid);
if (catalogItem == null)
{
throw new Exception("CatalogItem not found");
}
if (type == "R" && catalogItem.idHasRecipe == 0)
{
throw new Exception("Image has no recipe");
}
//Check if CatalogItem has a recipe, if yes try to get the recipe image
if (type == "M" && catalogItem.idHasRecipe > 0)
{
type = "R";
}
Boolean keepAspectRatio = Boolean.Parse(ConfigurationManager.AppSettings["KeepAspectRatio"]);
Boolean setGenericVideoThumbnailOnError = Boolean.Parse(ConfigurationManager.AppSettings["SetGenericVideoThumbnailOnError"]);
idThumbs thumb = null;
lock (dbThumbs)
{
//Searching with FirstOrDefault because PhotoSupreme sometimes stores the Thumbnail twice
thumb = dbThumbs.idThumbs.FirstOrDefault(x => x.ImageGUID == imageGuid && x.idType == type);
//If recipe image is not found, return the M image,
//because the programm cannot yet generate the recipe image
if (thumb == null && type == "R")
{
type = "M";
//Searching with FirstOrDefault because PhotoSupreme sometimes stores the Thumbnail twice
thumb = dbThumbs.idThumbs.FirstOrDefault(x => x.ImageGUID == imageGuid && x.idType == type);
}
}
if (thumb == null && Boolean.Parse(ConfigurationManager.AppSettings["CreateThumbnails"]))
{
SaveImageThumbnailResult result = StaticFunctions.SaveImageThumbnail(catalogItem, ref db, ref dbThumbs, new List <String>()
{
type
}, keepAspectRatio, setGenericVideoThumbnailOnError);
foreach (Exception ex in result.Exceptions)
{
log.Error(ex.ToString());
}
if (result.ImageStreams.Count > 0)
{
imageStream = result.ImageStreams.First();
if (IsRequestRest())
{
WebOperationContext.Current.OutgoingResponse.ContentType = "image/jpeg";
}
log.Info(String.Format("Client {0}:{1} called GetImageThumbnail with type: {2} imageGuid: {3} (returned resizedImageStream)",
clientEndpoint.Address, clientEndpoint.Port, type, imageGuid));
}
else
{
log.Info(String.Format("Client {0}:{1} called GetImageThumbnail with type: {2} imageGuid: {3} (returned null)",
clientEndpoint.Address, clientEndpoint.Port, type, imageGuid));
}
}
else
{
imageStream = new MemoryStream(thumb.idThumb);
if (IsRequestRest())
{
WebOperationContext.Current.OutgoingResponse.ContentType = "image/jpeg";
}
log.Info(String.Format("Client {0}:{1} called GetImageThumbnail with type: {2} imageGuid: {3} (returned imageStream)",
clientEndpoint.Address, clientEndpoint.Port, type, imageGuid));
}
scope.Complete();
}
if (width != null && height != null)
{
TransformGroup transformGroup = new TransformGroup();
BitmapSource bitmapSource = StaticFunctions.GetBitmapFrameFromImageStream(imageStream, "JPG");
StaticFunctions.Resize(ref bitmapSource, ref transformGroup, int.Parse(width), int.Parse(height));
if (transformGroup != null && transformGroup.Children.Count > 0)
{
TransformedBitmap tb = new TransformedBitmap();
tb.BeginInit();
tb.Source = bitmapSource;
tb.Transform = transformGroup;
tb.EndInit();
bitmapSource = tb;
BitmapFrame transformedBitmapFrame = BitmapFrame.Create(bitmapSource);
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
encoder.Frames.Add(transformedBitmapFrame);
imageStream = new System.IO.MemoryStream();
encoder.Save(imageStream);
imageStream.Position = 0;
}
}
return(imageStream);
}
public static SaveImageThumbnailResult SaveImageThumbnail(idCatalogItem catalogItem, ref IDImagerDB db, ref IDImagerDB dbThumbs,
List<String> types, Boolean keepAspectRatio, Boolean setGenericVideoThumbnailOnError)
{
SaveImageThumbnailResult result = new SaveImageThumbnailResult();
Stream imageStream = null;
String filePath = null;
try
{
filePath = GetImageFilePath(catalogItem);
BitmapFrame bitmapFrame;
if (ImageFileExtensions.Contains(catalogItem.idFileType))
{
imageStream = GetImageFileStream(filePath);
bitmapFrame = GetBitmapFrameFromImageStream(imageStream, catalogItem.idFileType);
}
else if (VideoFileExtensions.Contains(catalogItem.idFileType))
{
try
{
bitmapFrame = BitmapFrame.Create((BitmapSource)GenerateVideoThumbnail(filePath, new TimeSpan(0, 0, 0)));
}
catch (Exception ex)
{
if (setGenericVideoThumbnailOnError)
{
result.Exceptions.Add(new Exception(String.Format("Video thumbnail generation for imageGUID {0} file {1} failed. Generic thumbnails has been set.", catalogItem.GUID, filePath), ex));
Assembly assembly = Assembly.GetExecutingAssembly();
Stream genericVideoThumbnailStream = assembly.GetManifestResourceStream(@"IDBrowserServiceCode.Images.image_ph2.png");
bitmapFrame = BitmapFrame.Create(genericVideoThumbnailStream);
}
else
{
result.Exceptions.Add(new Exception(String.Format("Video thumbnail generation for imageGUID {0} file {1} failed.", catalogItem.GUID, filePath), ex));
return result;
}
}
}
else
{
throw new Exception(String.Format("File type {0} not supported", catalogItem.idFileType));
}
foreach (String type in types)
{
int imageWidth;
int imageHeight;
if (type.Equals("T"))
{
imageWidth = 160;
imageHeight = 120;
}
else
{
imageWidth = Int32.Parse(ConfigurationManager.AppSettings["MThumbmailWidth"]);
imageHeight = Int32.Parse(ConfigurationManager.AppSettings["MThumbnailHeight"]);
}
XDocument recipeXDocument = null;
if (type.Equals("T") || type.Equals("R"))
{
if (catalogItem.idHasRecipe > 0)
recipeXDocument = GetRecipeXDocument(db, catalogItem);
}
TransformGroup transformGroup = new TransformGroup();
if (bitmapFrame.PixelWidth > imageWidth && bitmapFrame.PixelHeight > imageHeight)
{
double scaleX;
double scaleY;
foreach (ScaleTransform existingScaleTransform in transformGroup.Children.OfType<ScaleTransform>().ToList())
transformGroup.Children.Remove(existingScaleTransform);
if (bitmapFrame.PixelWidth > bitmapFrame.PixelHeight)
{
scaleX = (double)imageWidth / (double)bitmapFrame.PixelWidth;
scaleY = (double)imageHeight / (double)bitmapFrame.PixelHeight;
}
else
{
scaleX = (double)imageHeight / (double)bitmapFrame.PixelHeight;
scaleY = (double)imageWidth / (double)bitmapFrame.PixelWidth;
}
ScaleTransform scaleTransform = new ScaleTransform(scaleX, scaleY, 0, 0);
transformGroup.Children.Add(scaleTransform);
}
Rotation rotation = StaticFunctions.GetRotation(bitmapFrame);
if (rotation != Rotation.Rotate0)
{
RotateTransform rotateTransform = new RotateTransform();
switch (rotation)
{
case Rotation.Rotate90:
rotateTransform.Angle = 90;
break;
case Rotation.Rotate180:
rotateTransform.Angle = 180;
break;
case Rotation.Rotate270:
rotateTransform.Angle = 270;
break;
}
transformGroup.Children.Add(rotateTransform);
}
Stream resizedImageStream = imageStream;
BitmapSource bitmapSource = bitmapFrame;
if (Recipe.ApplyXmpRecipe(recipeXDocument, ref bitmapSource, transformGroup))
{
BitmapFrame transformedBitmapFrame = BitmapFrame.Create(bitmapSource);
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
encoder.Frames.Add(transformedBitmapFrame);
resizedImageStream = new System.IO.MemoryStream();
encoder.Save(resizedImageStream);
resizedImageStream.Position = 0;
}
lock (dbThumbs)
{
idThumbs newThumb = new idThumbs();
newThumb.GUID = Guid.NewGuid().ToString().ToUpper();
newThumb.ImageGUID = catalogItem.GUID;
newThumb.idThumb = StreamToByteArray(resizedImageStream);
newThumb.idType = type;
dbThumbs.idThumbs.Add(newThumb);
}
result.ImageStreams.Add(resizedImageStream);
}
if (imageStream != null) { imageStream.Close(); }
dbThumbs.SaveChanges();
}
catch (Exception ex)
{
if (imageStream != null) { imageStream.Close(); }
result.Exceptions.Add(new Exception(String.Format("Error generating thumbnail for imageGUID {0} file {1}", catalogItem.GUID, filePath), ex));
}
return result;
}
public async static Task <SaveImageThumbnailResult> SaveImageThumbnail(idCatalogItem catalogItem, IDImagerDB db, IDImagerThumbsDB dbThumbs,
List <string> types, ServiceSettings serviceSettings)
{
SaveImageThumbnailResult result = new SaveImageThumbnailResult();
Stream imageStream = null;
String filePath = null;
try
{
filePath = GetImageFilePath(catalogItem, serviceSettings.FilePathReplace);
imageStream = GetImageFileStream(filePath);
foreach (String type in types)
{
int imageWidth;
int imageHeight;
if (type.Equals("T"))
{
imageWidth = 160;
imageHeight = 120;
}
else
{
imageWidth = serviceSettings.MThumbmailWidth;
imageHeight = serviceSettings.MThumbnailHeight;
}
XmpRecipeContainer xmpRecipeContainer = null;
if (type.Equals("T") || type.Equals("R"))
{
if (catalogItem.idHasRecipe > 0)
{
XDocument recipeXDocument = await GetRecipeXDocument(db, catalogItem);
xmpRecipeContainer = XmpRecipeHelper.ParseXmlRecepie(recipeXDocument);
}
}
MemoryStream resizedImageStream = new MemoryStream();
MagickReadSettings magickReadSettings = null;
if (Enum.TryParse <MagickFormat>(catalogItem.idFileType, true, out MagickFormat magickFormat))
{
magickReadSettings = new MagickReadSettings {
Format = magickFormat
};
}
imageStream.Position = 0;
MagickImage image = new MagickImage(imageStream, magickReadSettings)
{
Format = MagickFormat.Jpeg,
};
image.Resize(imageWidth, imageHeight);
if (xmpRecipeContainer != null)
{
XmpRecipeHelper.ApplyXmpRecipe(xmpRecipeContainer, image);
}
image.Write(resizedImageStream);
resizedImageStream.Position = 0;
bool boolThumbExists = await dbThumbs.idThumbs
.AnyAsync(x => x.ImageGUID == catalogItem.GUID && x.idType == type);
if (!boolThumbExists)
{
idThumbs newThumb = new idThumbs
{
GUID = Guid.NewGuid().ToString().ToUpper(),
ImageGUID = catalogItem.GUID,
idThumb = StreamToByteArray(resizedImageStream),
idType = type
};
dbThumbs.idThumbs.Add(newThumb);
}
result.ImageStreams.Add(resizedImageStream);
}
if (imageStream != null)
{
imageStream.Close();
}
await dbThumbs.SaveChangesAsync();
}
catch (Exception ex)
{
if (imageStream != null)
{
imageStream.Close();
}
result.Exceptions.Add(new Exception(String.Format("Error generating thumbnail for imageGUID {0} file {1}", catalogItem.GUID, filePath), ex));
}
return(result);
}
