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diff --git a/android/ui-ctl-core.h b/android/ui-ctl-core.h
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+/* Copyright (C) 2010 The Android Open Source Project
+**
+** This software is licensed under the terms of the GNU General Public
+** License version 2, as published by the Free Software Foundation, and
+** may be copied, distributed, and modified under those terms.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+*/
+
+#ifndef _ANDROID_UI_CONTROL_CORE_H
+#define _ANDROID_UI_CONTROL_CORE_H
+
+/*
+ * Contains core-side of UI control protocols. For the simplicity of the
+ * implementation there are two UI control services: "ui-core control" that
+ * handle UI controls initiated in the UI, and "core-ui control" that handle UI
+ * controls initiated in the core. The reason for hawing two services is that
+ * some of the UI controls expect the core to respond with some data. The
+ * simplest way to differentiate core commands from core responses to the UI
+ * commands, is to have two separate services: one sends commands only, and
+ * another sends only responses.
+ */
+
+/*
+ * Creates and initializes Core->UI UI control service.
+ * Param:
+ *  fd - Socket descriptor for the service.
+ * Return:
+ *  0 on success, or < 0 on failure.
+ */
+extern int coreuictl_create(int fd);
+
+/*
+ * Destroys Core->UI UI control service.
+ */
+extern void coreuictl_destroy();
+
+/* Changes the scale of the emulator window at runtime.
+ * Param:
+ *  scale, is_dpi - New window scale parameters
+ * Return:
+ *  0 on success, or < 0 on failure.
+ */
+extern int coreuictl_set_window_scale(double scale, int is_dpi);
+
+/*
+ * Creates and initializes UI->Core UI control instance.
+ * Param:
+ *  fd - Socket descriptor for the service.
+ * Return:
+ *  0 on success, or < 0 on failure.
+ */
+extern int uicorectl_create(int fd);
+
+/*
+ * Destroys UI->Core UI control service.
+ */
+extern void uicorectl_destroy();
+
+#endif /* _ANDROID_UI_CONTROL_CORE_H */