Create a copy of talk/sound under webrtc/sound.

BUG=3379
R=andrew@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/22379004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@6986 4adac7df-926f-26a2-2b94-8c16560cd09d

1 files changed, 53 insertions, 0 deletions

diff --git a/sound/nullsoundsystem.h b/sound/nullsoundsystem.h
new file mode 100644
index 00000000..6b749976
--- /dev/null
+++ b/sound/nullsoundsystem.h
@@ -0,0 +1,53 @@
+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_SOUND_NULLSOUNDSYSTEM_H_
+#define WEBRTC_SOUND_NULLSOUNDSYSTEM_H_
+
+#include "webrtc/sound/soundsysteminterface.h"
+
+namespace rtc {
+
+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 rtc
+
+#endif  // WEBRTC_SOUND_NULLSOUNDSYSTEM_H_