public ImageSource CreateImageSource(LibraryHierarchyNode libraryHierarchyNode, int width, int height, bool cache)
{
try
{
var id = this.GetImageId(libraryHierarchyNode, width, height);
if (cache)
{
var fileName = default(string);
if (FileMetaDataStore.Exists(PREFIX, id, out fileName))
{
return(this.ImageLoader.Load(fileName, 0, 0, true));
}
}
using (KeyLock.Lock(id))
{
if (cache)
{
var fileName = default(string);
if (FileMetaDataStore.Exists(PREFIX, id, out fileName))
{
return(this.ImageLoader.Load(fileName, 0, 0, true));
}
}
return(this.CreateImageSourceCore(libraryHierarchyNode, width, height, cache));
}
}
catch (Exception e)
{
Logger.Write(this, LogLevel.Error, "Error creating image source: {0}", e.Message);
return(null);
}
}
private async Task <string> ImportImage(string fileName, string id, bool overwrite)
{
if (FileMetaDataStore.Contains(fileName))
{
return(fileName);
}
var prefix = this.GetType().Name;
var result = default(string);
if (overwrite || !FileMetaDataStore.Exists(prefix, id, out result))
{
#if NET40
Semaphore.Wait();
#else
await Semaphore.WaitAsync().ConfigureAwait(false);
#endif
try
{
if (overwrite || !FileMetaDataStore.Exists(prefix, id, out result))
{
return(await FileMetaDataStore.WriteAsync(prefix, id, fileName).ConfigureAwait(false));
}
}
finally
{
Semaphore.Release();
}
}
return(result);
}
protected virtual string Resize(string id, Func <Image> factory, int width, int height)
{
var fileName = default(string);
if (FileMetaDataStore.Exists(PREFIX, id, out fileName))
{
return(fileName);
}
//TODO: Setting throwOnTimeout = false so we ignore synchronization timeout.
//TODO: I think there exists a deadlock bug in KeyLock but I haven't been able to prove it.
using (KeyLock.Lock(id, TIMEOUT, false))
{
if (FileMetaDataStore.Exists(PREFIX, id, out fileName))
{
return(fileName);
}
using (var image = new Bitmap(width, height))
{
using (var graphics = Graphics.FromImage(image))
{
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
this.Resize(graphics, factory, width, height);
}
using (var stream = new MemoryStream())
{
image.Save(stream, ImageFormat.Png);
stream.Seek(0, SeekOrigin.Begin);
return(FileMetaDataStore.Write(PREFIX, id, stream));
}
}
}
}
protected virtual string Resize(string id, Func <Image> factory, int width, int height)
{
var fileName = default(string);
if (FileMetaDataStore.Exists(PREFIX, id, out fileName))
{
return(fileName);
}
using (KeyLock.Lock(id))
{
if (FileMetaDataStore.Exists(PREFIX, id, out fileName))
{
return(fileName);
}
using (var image = new Bitmap(width, height))
{
using (var graphics = Graphics.FromImage(image))
{
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
this.Resize(graphics, factory, width, height);
}
using (var stream = new MemoryStream())
{
image.Save(stream, ImageFormat.Png);
stream.Seek(0, SeekOrigin.Begin);
return(FileMetaDataStore.Write(PREFIX, id, stream));
}
}
}
}
public ImageSource CreateImageSource(LibraryHierarchyNode libraryHierarchyNode, int width, int height)
{
var id = this.GetImageId(libraryHierarchyNode, width, height);
var fileName = default(string);
if (FileMetaDataStore.Exists(PREFIX, id, out fileName))
{
return(this.ImageLoader.Load(id, fileName, 0, 0, true));
}
//TODO: Setting throwOnTimeout = false so we ignore synchronization timeout.
//TODO: I think there exists a deadlock bug in KeyLock but I haven't been able to prove it.
using (KeyLock.Lock(id, TIMEOUT, false))
{
if (FileMetaDataStore.Exists(PREFIX, id, out fileName))
{
return(this.ImageLoader.Load(id, fileName, 0, 0, true));
}
return(this.CreateImageSourceCore(libraryHierarchyNode, width, height));
}
}
public WaveFormGenerator.WaveFormGeneratorData GetOrCreate(IOutputStream stream, int resolution, Func <WaveFormGenerator.WaveFormGeneratorData> factory)
{
var key = new Key(stream.FileName, stream.Length, resolution);
return(this.Store.GetOrAdd(key, () =>
{
if (this.Enabled.Value)
{
var id = this.GetDataId(stream, resolution);
var fileName = default(string);
if (FileMetaDataStore.Exists(PREFIX, id, out fileName))
{
var data = default(WaveFormGenerator.WaveFormGeneratorData);
if (this.TryLoad(fileName, out data))
{
return data;
}
}
}
return factory();
}));
}
public ImageSource CreateImageSource(LibraryHierarchyNode libraryHierarchyNode, int width, int height, bool cache)
{
var id = this.GetImageId(libraryHierarchyNode, width, height);
if (cache)
{
var fileName = default(string);
if (FileMetaDataStore.Exists(PREFIX, id, out fileName))
{
return this.ImageLoader.Load(fileName, 0, 0, true);
}
}
using (KeyLock.Lock(id))
{
if (cache)
{
var fileName = default(string);
if (FileMetaDataStore.Exists(PREFIX, id, out fileName))
{
return this.ImageLoader.Load(fileName, 0, 0, true);
}
}
return this.CreateImageSourceCore(libraryHierarchyNode, width, height, cache);
}
}
