1 files changed, 54 insertions, 0 deletions
diff --git a/dom/media/gmp/GMPVideoHost.h b/dom/media/gmp/GMPVideoHost.h
new file mode 100644
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+++ b/dom/media/gmp/GMPVideoHost.h
@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GMPVideoHost_h_
+#define GMPVideoHost_h_
+
+#include "gmp-video-host.h"
+#include "gmp-video-plane.h"
+#include "gmp-video-frame.h"
+#include "nsTArray.h"
+
+namespace mozilla::gmp {
+
+class GMPSharedMemManager;
+class GMPPlaneImpl;
+class GMPVideoEncodedFrameImpl;
+
+class GMPVideoHostImpl : public GMPVideoHost {
+ public:
+  explicit GMPVideoHostImpl(GMPSharedMemManager* aSharedMemMgr);
+  virtual ~GMPVideoHostImpl();
+
+  // Used for shared memory allocation and deallocation.
+  GMPSharedMemManager* SharedMemMgr();
+  void DoneWithAPI();
+  void ActorDestroyed();
+  void PlaneCreated(GMPPlaneImpl* aPlane);
+  void PlaneDestroyed(GMPPlaneImpl* aPlane);
+  void EncodedFrameCreated(GMPVideoEncodedFrameImpl* aEncodedFrame);
+  void EncodedFrameDestroyed(GMPVideoEncodedFrameImpl* aFrame);
+
+  // GMPVideoHost
+  GMPErr CreateFrame(GMPVideoFrameFormat aFormat,
+                     GMPVideoFrame** aFrame) override;
+  GMPErr CreatePlane(GMPPlane** aPlane) override;
+
+ private:
+  // All shared memory allocations have to be made by an IPDL actor.
+  // This is a reference to the owning actor. If this reference is
+  // null then the actor has died and all allocations must fail.
+  GMPSharedMemManager* mSharedMemMgr;
+
+  // We track all of these things because they need to handle further
+  // allocations through us and we need to notify them when they
+  // can't use us any more.
+  nsTArray<GMPPlaneImpl*> mPlanes;
+  nsTArray<GMPVideoEncodedFrameImpl*> mEncodedFrames;
+};
+
+}  // namespace mozilla::gmp
+
+#endif  // GMPVideoHost_h_