Moving src/webrtc into src/.

In order to eliminate the WebRTC Subtree mirror in Chromium, 
WebRTC is moving the content of the src/webrtc directory up
to the src/ directory.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org

Bug: chromium:611808
Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38
Reviewed-on: https://webrtc-review.googlesource.com/1560
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19845}

modules/audio_coding/neteq/tools/audio_sink.h

@@ -0,0 +1,71 @@
+/*
+ *  Copyright (c) 2014 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_MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_SINK_H_
+#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_SINK_H_
+
+#include "webrtc/modules/include/module_common_types.h"
+#include "webrtc/rtc_base/constructormagic.h"
+#include "webrtc/typedefs.h"
+
+namespace webrtc {
+namespace test {
+
+// Interface class for an object receiving raw output audio from test
+// applications.
+class AudioSink {
+ public:
+  AudioSink() {}
+  virtual ~AudioSink() {}
+
+  // Writes |num_samples| from |audio| to the AudioSink. Returns true if
+  // successful, otherwise false.
+  virtual bool WriteArray(const int16_t* audio, size_t num_samples) = 0;
+
+  // Writes |audio_frame| to the AudioSink. Returns true if successful,
+  // otherwise false.
+  bool WriteAudioFrame(const AudioFrame& audio_frame) {
+    return WriteArray(
+        audio_frame.data(),
+        audio_frame.samples_per_channel_ * audio_frame.num_channels_);
+  }
+
+ private:
+  RTC_DISALLOW_COPY_AND_ASSIGN(AudioSink);
+};
+
+// Forks the output audio to two AudioSink objects.
+class AudioSinkFork : public AudioSink {
+ public:
+  AudioSinkFork(AudioSink* left, AudioSink* right)
+      : left_sink_(left), right_sink_(right) {}
+
+  bool WriteArray(const int16_t* audio, size_t num_samples) override;
+
+ private:
+  AudioSink* left_sink_;
+  AudioSink* right_sink_;
+
+  RTC_DISALLOW_COPY_AND_ASSIGN(AudioSinkFork);
+};
+
+// An AudioSink implementation that does nothing.
+class VoidAudioSink : public AudioSink {
+ public:
+  VoidAudioSink() = default;
+  bool WriteArray(const int16_t* audio, size_t num_samples) override;
+
+ private:
+  RTC_DISALLOW_COPY_AND_ASSIGN(VoidAudioSink);
+};
+
+}  // namespace test
+}  // namespace webrtc
+#endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_SINK_H_