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/post_decode_vad.h

@@ -0,0 +1,72 @@
+/*
+ *  Copyright (c) 2013 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_POST_DECODE_VAD_H_
+#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_POST_DECODE_VAD_H_
+
+#include <string>  // size_t
+
+#include "webrtc/api/audio_codecs/audio_decoder.h"
+#include "webrtc/common_audio/vad/include/webrtc_vad.h"
+#include "webrtc/common_types.h"  // NULL
+#include "webrtc/modules/audio_coding/neteq/defines.h"
+#include "webrtc/modules/audio_coding/neteq/packet.h"
+#include "webrtc/rtc_base/constructormagic.h"
+#include "webrtc/typedefs.h"
+
+namespace webrtc {
+
+class PostDecodeVad {
+ public:
+  PostDecodeVad()
+      : enabled_(false),
+        running_(false),
+        active_speech_(true),
+        sid_interval_counter_(0),
+        vad_instance_(NULL) {
+  }
+
+  virtual ~PostDecodeVad();
+
+  // Enables post-decode VAD.
+  void Enable();
+
+  // Disables post-decode VAD.
+  void Disable();
+
+  // Initializes post-decode VAD.
+  void Init();
+
+  // Updates post-decode VAD with the audio data in |signal| having |length|
+  // samples. The data is of type |speech_type|, at the sample rate |fs_hz|.
+  void Update(int16_t* signal, size_t length,
+              AudioDecoder::SpeechType speech_type, bool sid_frame, int fs_hz);
+
+  // Accessors.
+  bool enabled() const { return enabled_; }
+  bool running() const { return running_; }
+  bool active_speech() const { return active_speech_; }
+
+ private:
+  static const int kVadMode = 0;  // Sets aggressiveness to "Normal".
+  // Number of Update() calls without CNG/SID before re-enabling VAD.
+  static const int kVadAutoEnable = 3000;
+
+  bool enabled_;
+  bool running_;
+  bool active_speech_;
+  int sid_interval_counter_;
+  ::VadInst* vad_instance_;
+
+  RTC_DISALLOW_COPY_AND_ASSIGN(PostDecodeVad);
+};
+
+}  // namespace webrtc
+#endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_POST_DECODE_VAD_H_