Initial Contribution
diff --git a/include/ui/EGLDisplaySurface.h b/include/ui/EGLDisplaySurface.h
new file mode 100644
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--- /dev/null
+++ b/include/ui/EGLDisplaySurface.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_EGL_DISPLAY_SURFACE_H
+#define ANDROID_EGL_DISPLAY_SURFACE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Timers.h>
+
+#include <ui/EGLNativeSurface.h>
+#include <ui/BlitHardware.h>
+
+#include <pixelflinger/pixelflinger.h>
+#include <linux/fb.h>
+
+// ---------------------------------------------------------------------------
+namespace android {
+// ---------------------------------------------------------------------------
+
+class Region;
+class Rect;
+
+class EGLDisplaySurface : public EGLNativeSurface<EGLDisplaySurface>
+{
+public:
+ EGLDisplaySurface();
+ ~EGLDisplaySurface();
+
+ int32_t getPageFlipCount() const;
+ void copyFrontToBack(const Region& copyback);
+
+private:
+ static void hook_incRef(NativeWindowType window);
+ static void hook_decRef(NativeWindowType window);
+ static uint32_t hook_swapBuffers(NativeWindowType window);
+ static void hook_setSwapRectangle(NativeWindowType window, int l, int t, int w, int h);
+ static uint32_t hook_nextBuffer(NativeWindowType window);
+
+ uint32_t swapBuffers();
+ uint32_t nextBuffer();
+ void setSwapRectangle(int l, int t, int w, int h);
+
+ status_t mapFrameBuffer();
+
+ enum {
+ PAGE_FLIP = 0x00000001
+ };
+ GGLSurface mFb[2];
+ int mIndex;
+ uint32_t mFlags;
+ size_t mSize;
+ fb_var_screeninfo mInfo;
+ fb_fix_screeninfo mFinfo;
+ int32_t mPageFlipCount;
+ nsecs_t mTime;
+ int32_t mSwapCount;
+ nsecs_t mSleep;
+ uint32_t mFeatureFlags;
+ copybit_t* mBlitEngine;
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+// ---------------------------------------------------------------------------
+
+#endif // ANDROID_EGL_DISPLAY_SURFACE_H
+