[idd] transport: route immutable texture frames

idd/LGIdd/transport/ITexSink.h

@@ -0,0 +1,40 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2026 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#pragma once
+
+#include "capture/CFrameTex.h"
+#include "d3d/CInteropPool.h"
+#include "transport/FrameIn.h"
+
+class ITexSink
+{
+public:
+  virtual ~ITexSink() = default;
+
+  // Push is bounded and nonblocking. ACCEPTED transfers the self-contained
+  // frame and lease to the transport; both remain retained until its
+  // asynchronous GPU use completes. Other results retain neither object and
+  // leave sibling routes and providers untouched. A later executor must make
+  // the next accepted product full-damage after BUSY or another dropped
+  // partial update.
+  virtual PushResult Push(FrameIn frame, TexLease lease) noexcept = 0;
+  virtual PushResult Push(FrameIn frame, D11Lease lease) noexcept = 0;
+};