diff --git a/include/gui/BufferQueueDefs.h b/include/gui/BufferQueueDefs.h
new file mode 100644
index 0000000..bccc881
--- /dev/null
+++ b/include/gui/BufferQueueDefs.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2014 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_GUI_BUFFERQUEUECOREDEFS_H
+#define ANDROID_GUI_BUFFERQUEUECOREDEFS_H
+
+#include <gui/BufferSlot.h>
+
+namespace android {
+    class BufferQueueCore;
+
+    namespace BufferQueueDefs {
+        // BufferQueue will keep track of at most this value of buffers.
+        // Attempts at runtime to increase the number of buffers past this
+        // will fail.
+        enum { NUM_BUFFER_SLOTS = 32 };
+
+        typedef BufferSlot SlotsType[NUM_BUFFER_SLOTS];
+    } // namespace BufferQueueDefs
+} // namespace android
+
+#endif