1 files changed, 39 insertions, 0 deletions
diff --git a/widget/android/SurfaceViewWrapperSupport.h b/widget/android/SurfaceViewWrapperSupport.h
new file mode 100644
index 0000000000..fde98dd957
--- /dev/null
+++ b/widget/android/SurfaceViewWrapperSupport.h
@@ -0,0 +1,39 @@
+/* -*- Mode: c++; c-basic-offset: 2; tab-width: 20; indent-tabs-mode: nil; -*-
+ * 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 SurfaceViewWrapperSupport_h__
+#define SurfaceViewWrapperSupport_h__
+
+#include "mozilla/java/SurfaceViewWrapperNatives.h"
+#include <android/native_window.h>
+#include <android/native_window_jni.h>
+
+namespace mozilla {
+namespace widget {
+
+class SurfaceViewWrapperSupport final
+    : public java::SurfaceViewWrapper::Natives<SurfaceViewWrapperSupport> {
+ public:
+  static bool IsSurfaceAbandoned(jni::Object::Param aSurface) {
+    ANativeWindow* win =
+        ANativeWindow_fromSurface(jni::GetEnvForThread(), aSurface.Get());
+    if (!win) {
+      return true;
+    }
+
+    // If the Surface's underlying BufferQueue has been abandoned, then
+    // ANativeWindow_getWidth (or height) will return a negative value
+    // to indicate an error.
+    int32_t width = ANativeWindow_getWidth(win);
+
+    ANativeWindow_release(win);
+    return width < 0;
+  }
+};
+
+}  // namespace widget
+}  // namespace mozilla
+
+#endif  // SurfaceViewWrapperSupport_h__