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diff --git a/src/output/plugins/sles/Engine.hxx b/src/output/plugins/sles/Engine.hxx
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+++ b/src/output/plugins/sles/Engine.hxx
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+/*
+ * Copyright (C) 2011-2012 Max Kellermann <max@duempel.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef SLES_ENGINE_HPP
+#define SLES_ENGINE_HPP
+
+#include <SLES/OpenSLES.h>
+
+namespace SLES {
+	/**
+	 * OO wrapper for an OpenSL/ES SLEngineItf variable.
+	 */
+	class Engine {
+		SLEngineItf engine;
+
+	public:
+		Engine() = default;
+		explicit Engine(SLEngineItf _engine):engine(_engine) {}
+
+		SLresult CreateAudioPlayer(SLObjectItf *pPlayer,
+					   SLDataSource *pAudioSrc, SLDataSink *pAudioSnk,
+					   SLuint32 numInterfaces,
+					   const SLInterfaceID *pInterfaceIds,
+					   const SLboolean *pInterfaceRequired) {
+			return (*engine)->CreateAudioPlayer(engine, pPlayer,
+							    pAudioSrc, pAudioSnk,
+							    numInterfaces, pInterfaceIds,
+							    pInterfaceRequired);
+		}
+
+		SLresult CreateOutputMix(SLObjectItf *pMix,
+					 SLuint32 numInterfaces,
+					 const SLInterfaceID *pInterfaceIds,
+					 const SLboolean *pInterfaceRequired) {
+			return (*engine)->CreateOutputMix(engine, pMix,
+							  numInterfaces, pInterfaceIds,
+							  pInterfaceRequired);
+		}
+	};
+}
+
+#endif