public VlcManager(DirectoryInfo dynamicLinkLibrariesPath, string[] args)
{
this.myLibraryLoader = VlcLibraryLoader.GetOrCreateLoader(dynamicLinkLibrariesPath);
IntPtr[] utf8Args = new IntPtr[args?.Length ?? 0];
try
{
for (var i = 0; i < utf8Args.Length; i++)
{
byte[] bytes = Encoding.UTF8.GetBytes(args[i]);
var buffer = Marshal.AllocHGlobal(bytes.Length + 1);
Marshal.Copy(bytes, 0, buffer, bytes.Length);
Marshal.WriteByte(buffer, bytes.Length, 0);
utf8Args[i] = buffer;
}
myVlcInstance = new VlcInstance(this, myLibraryLoader.GetInteropDelegate <CreateNewInstance>().Invoke(utf8Args.Length, utf8Args));
}
finally
{
foreach (var arg in utf8Args)
{
if (arg != IntPtr.Zero)
{
Marshal.FreeHGlobal(arg);
}
}
}
}
public void Dispose()
{
if (this.dialogCallbacksPointer != IntPtr.Zero)
{
Marshal.FreeHGlobal(this.dialogCallbacksPointer);
}
myVlcInstance.Dispose();
VlcLibraryLoader.ReleaseLoader(this.myLibraryLoader);
}
/// <summary>
/// Decrements the reference counter of the specified loader.
/// If this reference counter reaches 0, it is destroyed
/// </summary>
/// <param name="loader"></param>
public static void ReleaseLoader(VlcLibraryLoader loader)
{
lock (myLoaderInstances)
{
loader.myRefCount--;
if (loader.myRefCount == 0)
{
((IDisposable)loader).Dispose();
myLoaderInstances.Remove(loader.myDynamicLinkLibrariesPath.FullName);
}
}
}
/// <summary>
/// Creates a new VlcLibraryLoader, or get the existing one for that folder from the dictionary (increment its reference count).
/// </summary>
/// <param name="dynamicLinkLibrariesPath">The path from the dictionary</param>
/// <returns>The loader</returns>
public static VlcLibraryLoader GetOrCreateLoader(DirectoryInfo dynamicLinkLibrariesPath)
{
if (!dynamicLinkLibrariesPath.Exists)
{
throw new DirectoryNotFoundException();
}
lock (myLoaderInstances)
{
if (myLoaderInstances.ContainsKey(dynamicLinkLibrariesPath.FullName))
{
var instance = myLoaderInstances[dynamicLinkLibrariesPath.FullName];
instance.myRefCount++;
return(instance);
}
var returnedInstance = new VlcLibraryLoader(dynamicLinkLibrariesPath);
myLoaderInstances[dynamicLinkLibrariesPath.FullName] = returnedInstance;
return(returnedInstance);
}
}