static IntPtr CtorFromCallbacks(LibVLC libVLC, Stream stream)
{
if (libVLC == null)
{
throw new ArgumentNullException(nameof(libVLC));
}
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
var openMedia = new OpenMedia(CallbackOpenMedia);
var readMedia = new ReadMedia(CallbackReadMedia);
var seekMedia = new SeekMedia(CallbackSeekMedia);
var closeMedia = new CloseMedia(CallbackCloseMedia);
var opaque = AddStream(stream, openMedia, readMedia, seekMedia, closeMedia);
if (opaque == IntPtr.Zero)
{
throw new InvalidOperationException("Cannot create opaque parameter");
}
return(Native.LibVLCMediaNewCallbacks(libVLC.NativeReference,
Marshal.GetFunctionPointerForDelegate(openMedia),
Marshal.GetFunctionPointerForDelegate(readMedia),
Marshal.GetFunctionPointerForDelegate(seekMedia),
Marshal.GetFunctionPointerForDelegate(closeMedia),
opaque));
}
public StreamData(IntPtr handle, Stream stream, byte[] buffer, OpenMedia openMedia, ReadMedia readMedia, SeekMedia seekMedia, CloseMedia closeMedia)
{
Handle = handle;
Stream = stream;
Buffer = buffer;
OpenMedia = openMedia;
ReadMedia = readMedia;
SeekMedia = seekMedia;
CloseMedia = closeMedia;
}
static IntPtr AddStream(Stream stream, OpenMedia openMedia, ReadMedia readMedia, SeekMedia seekMedia, CloseMedia closeMedia)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
IntPtr handle;
lock (DicStreams)
{
_streamIndex++;
handle = new IntPtr(_streamIndex);
DicStreams[handle] = new StreamData
{
Buffer = new byte[0x4000],
Handle = handle,
Stream = stream,
OpenMedia = openMedia,
ReadMedia = readMedia,
SeekMedia = seekMedia,
CloseMedia = closeMedia
};
}
return(handle);
}