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diff --git a/thirdparty/libsimplewebm/OpusVorbisDecoder.hpp b/thirdparty/libsimplewebm/OpusVorbisDecoder.hpp
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+++ b/thirdparty/libsimplewebm/OpusVorbisDecoder.hpp
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+/*
+	MIT License
+
+	Copyright (c) 2016 Błażej Szczygieł
+
+	Permission is hereby granted, free of charge, to any person obtaining a copy
+	of this software and associated documentation files (the "Software"), to deal
+	in the Software without restriction, including without limitation the rights
+	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+	copies of the Software, and to permit persons to whom the Software is
+	furnished to do so, subject to the following conditions:
+
+	The above copyright notice and this permission notice shall be included in all
+	copies or substantial portions of the Software.
+
+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+	SOFTWARE.
+*/
+
+#ifndef OPUSVORBISDECODER_HPP
+#define OPUSVORBISDECODER_HPP
+
+#include "WebMDemuxer.hpp"
+
+struct VorbisDecoder;
+struct OpusDecoder;
+
+class OpusVorbisDecoder
+{
+	OpusVorbisDecoder(const OpusVorbisDecoder &);
+	void operator =(const OpusVorbisDecoder &);
+public:
+	OpusVorbisDecoder(const WebMDemuxer &demuxer);
+	~OpusVorbisDecoder();
+
+	bool isOpen() const;
+
+	inline int getBufferSamples() const
+	{
+		return m_numSamples;
+	}
+
+	bool getPCMS16(WebMFrame &frame, short *buffer, int &numOutSamples);
+
+private:
+	bool openVorbis(const WebMDemuxer &demuxer);
+	bool openOpus(const WebMDemuxer &demuxer);
+
+	void close();
+
+	VorbisDecoder *m_vorbis;
+	OpusDecoder *m_opus;
+	int m_numSamples;
+	int m_channels;
+
+};
+
+#endif // OPUSVORBISDECODER_HPP