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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_AUDIO_TEST_H
+#define ANDROID_AUDIO_TEST_H
+
+/* Start the audio test output, this will register a virtual sound
+ * device that sends a saw signal to the audio sub-system. This is
+ * used to test that the audio backend works without having to boot
+ * a full system and launch a music application.
+ */
+extern int android_audio_test_start_out(void);
+
+#endif /* ANDROID_AUDIO_TEST_H */