public BitmapSource GetBitmapSource(FrameKey frameKey, CancellationTokenSource cancellationTokenSource)
{
//Console.WriteLine("GetBitmapSource internal START " + frameKey.ToString());
BitmapSource bitmapSource = null;
WeakReference weakReference = null;
if (m_FrameBitmapSources.TryGetValue(frameKey.ToString(), out weakReference) == true)
{
bitmapSource = weakReference.Target as BitmapSource;
//Console.WriteLine("GetBitmapSource internal, already contains bitmap source frame key (but perhaps weak reference is dead) " + frameKey.ToString());
//Console.WriteLine(weakReference.IsAlive ? "hashed bitmap source is Alive" : "bitmap source Died");
}
if (bitmapSource == null) //means either weak reference was not found, or was found but target bitmapsource died
{
bitmapSource = GetTiffBitmapSource(frameKey.FileName, frameKey.FrameIndex, cancellationTokenSource);
if (weakReference == null) //if earlier attempt to find key failed
{
//if (m_FrameBitmapSources.TryGetValue(frameKey.ToString(), out weakReference) == false)
//{
m_FrameBitmapSources.TryAdd(frameKey.ToString(), weakReference = new WeakReference(bitmapSource));
//}
}
weakReference.Target = bitmapSource;
}
m_FrameBitmapSourcesToForceKeep.AddOrUpdate(frameKey.ToString(), bitmapSource, (k, x) => x == null ? bitmapSource : x);
SetScore(frameKey, long.MaxValue);
//Console.WriteLine("GetBitmapSource internal END " + frameKey.ToString());
return(bitmapSource);
}
public RenderTargetBitmap GetRenderTargetBitmap(FrameKey frameKey, CancellationTokenSource cancellationTokenSource)
{
//Console.WriteLine("GetRenderTargetBitmap internal START " + frameKey.ToString());
RenderTargetBitmap renderTargetBitmap = null;
WeakReference weakReference = null;
if (m_FrameRenderTargetBitmaps.TryGetValue(frameKey.ToStringExt(), out weakReference) == true)
{
renderTargetBitmap = weakReference.Target as RenderTargetBitmap;
//Console.WriteLine("GetBitmapSource internal, already contains bitmap source frame key (but perhaps weak reference is dead) " + frameKey.ToString());
//Console.WriteLine(weakReference.IsAlive ? "hashed bitmap source is Alive" : "bitmap source Died");
}
if (renderTargetBitmap == null) //means either weak reference was not found, or was found but target bitmapsource died
{
renderTargetBitmap = GetNewRenderTargetBitmap(frameKey, cancellationTokenSource);
if (weakReference == null) //if earlier attempt to find key failed
{
//if (m_FrameBitmapSources.TryGetValue(frameKey.ToString(), out weakReference) == false)
//{
m_FrameRenderTargetBitmaps.TryAdd(frameKey.ToStringExt(), weakReference = new WeakReference(renderTargetBitmap));
m_RenderTargetBitmapInstances
.AddOrUpdate(
frameKey.ToString(),
new List <string>()
{
frameKey.ToStringExt()
},
(k, x) =>
{
x.Add(frameKey.ToStringExt());
return(x);
});
//}
}
weakReference.Target = renderTargetBitmap;
}
m_FrameRenderTargetBitmapsToForceKeep
.AddOrUpdate(frameKey.ToStringExt(), renderTargetBitmap, (k, x) => x == null ? renderTargetBitmap : x);
//SetScore(frameKey, long.MaxValue); //no need to set score here, it is set when retrieving the bitmap source
//Console.WriteLine("GetRenderTargetBitmap internal END " + frameKey.ToString());
return(renderTargetBitmap);
}
public void SetScore(FrameKey frameKey, long ticks)
{
m_FrameScores.AddOrUpdate(frameKey.ToString(), ticks, (k, x) => ticks);
}
