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diff --git a/extern/audaspace/plugins/wasapi/WASAPIDevice.h b/extern/audaspace/plugins/wasapi/WASAPIDevice.h
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+/*******************************************************************************
+ * Copyright 2009-2016 Jörg Müller
+ *
+ * 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.
+ ******************************************************************************/
+
+#pragma once
+
+#ifdef WASAPI_PLUGIN
+#define AUD_BUILD_PLUGIN
+#endif
+
+/**
+ * @file WASAPIDevice.h
+ * @ingroup plugin
+ * The WASAPIDevice class.
+ */
+
+#include "devices/SoftwareDevice.h"
+
+#include <thread>
+
+#include <windows.h>
+#include <audioclient.h>
+#include <mmdeviceapi.h>
+#include <mmreg.h>
+
+AUD_NAMESPACE_BEGIN
+
+/**
+ * This device plays back through WASAPI, the Windows audio API.
+ */
+class AUD_PLUGIN_API WASAPIDevice : public SoftwareDevice
+{
+private:
+	/**
+	 * Whether there is currently playback.
+	 */
+	bool m_playing;
+
+	IMMDeviceEnumerator* m_imm_device_enumerator;
+	IMMDevice* m_imm_device;
+	IAudioClient* m_audio_client;
+	WAVEFORMATEXTENSIBLE m_wave_format_extensible;
+
+	/**
+	 * The streaming thread.
+	 */
+	std::thread m_thread;
+
+	/**
+	 * Starts the streaming thread.
+	 */
+	AUD_LOCAL void start();
+
+	/**
+	 * Streaming thread main function.
+	 */
+	AUD_LOCAL void updateStream();
+
+	// delete copy constructor and operator=
+	WASAPIDevice(const WASAPIDevice&) = delete;
+	WASAPIDevice& operator=(const WASAPIDevice&) = delete;
+
+protected:
+	virtual void playing(bool playing);
+
+public:
+	/**
+	 * Opens the WASAPI audio device for playback.
+	 * \param specs The wanted audio specification.
+	 * \param buffersize The size of the internal buffer.
+	 * \note The specification really used for opening the device may differ.
+	 * \exception Exception Thrown if the audio device cannot be opened.
+	 */
+	WASAPIDevice(DeviceSpecs specs, int buffersize = AUD_DEFAULT_BUFFER_SIZE);
+
+	/**
+	 * Closes the WASAPI audio device.
+	 */
+	virtual ~WASAPIDevice();
+
+	/**
+	 * Registers this plugin.
+	 */
+	static void registerPlugin();
+};
+
+AUD_NAMESPACE_END