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diff --git a/sound/nullsoundsystem.h b/sound/nullsoundsystem.h
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--- a/sound/nullsoundsystem.h
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-/*
- * libjingle
- * Copyright 2004--2010, Google Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. 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.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 TALK_SOUND_NULLSOUNDSYSTEM_H_
-#define TALK_SOUND_NULLSOUNDSYSTEM_H_
-
-#include "talk/sound/soundsysteminterface.h"
-
-namespace cricket {
-
-class SoundDeviceLocator;
-class SoundInputStreamInterface;
-class SoundOutputStreamInterface;
-
-// A simple reference sound system that drops output samples and generates
-// no input samples.
-class NullSoundSystem : public SoundSystemInterface {
- public:
- static SoundSystemInterface *Create() {
- return new NullSoundSystem();
- }
-
- virtual ~NullSoundSystem();
-
- virtual bool Init();
- virtual void Terminate();
-
- virtual bool EnumeratePlaybackDevices(SoundDeviceLocatorList *devices);
- virtual bool EnumerateCaptureDevices(SoundDeviceLocatorList *devices);
-
- virtual SoundOutputStreamInterface *OpenPlaybackDevice(
- const SoundDeviceLocator *device,
- const OpenParams &params);
- virtual SoundInputStreamInterface *OpenCaptureDevice(
- const SoundDeviceLocator *device,
- const OpenParams &params);
-
- virtual bool GetDefaultPlaybackDevice(SoundDeviceLocator **device);
- virtual bool GetDefaultCaptureDevice(SoundDeviceLocator **device);
-
- virtual const char *GetName() const;
-};
-
-} // namespace cricket
-
-#endif // TALK_SOUND_NULLSOUNDSYSTEM_H_