import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

gfx/gl/EGLUtils.h

@@ -0,0 +1,60 @@
+/* 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 EGLUTILS_H_
+#define EGLUTILS_H_
+
+#include "GLContextTypes.h"
+#include "GLTypes.h"
+#include "mozilla/Assertions.h"
+
+namespace mozilla {
+namespace gl {
+
+class GLLibraryEGL;
+
+bool DoesEGLContextSupportSharingWithEGLImage(GLContext* gl);
+EGLImage CreateEGLImage(GLContext* gl, GLuint tex);
+
+////////////////////////////////////////////////////////////////////////
+// EGLImageWrapper
+
+class EGLImageWrapper
+{
+public:
+    static EGLImageWrapper* Create(GLContext* gl, GLuint tex);
+
+private:
+    GLLibraryEGL& mLibrary;
+    const EGLDisplay mDisplay;
+public:
+    const EGLImage mImage;
+private:
+    EGLSync mSync;
+
+    EGLImageWrapper(GLLibraryEGL& library,
+                    EGLDisplay display,
+                    EGLImage image)
+        : mLibrary(library)
+        , mDisplay(display)
+        , mImage(image)
+        , mSync(0)
+    {
+        MOZ_ASSERT(mImage);
+    }
+
+public:
+    ~EGLImageWrapper();
+
+    // Insert a sync point on the given context, which should be the current active
+    // context.
+    bool FenceSync(GLContext* gl);
+
+    bool ClientWaitSync();
+};
+
+} // namespace gl
+} // namespace mozilla
+
+#endif