audio_coding: remove "main" directory

webrtc/modules/audio_coding/main/acm2/call_statistics.h

-/*
- *  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_MAIN_ACM2_CALL_STATISTICS_H_
-#define WEBRTC_MODULES_AUDIO_CODING_MAIN_ACM2_CALL_STATISTICS_H_
-
-#include "webrtc/common_types.h"
-#include "webrtc/modules/include/module_common_types.h"
-
-//
-// This class is for book keeping of calls to ACM. It is not useful to log API
-// calls which are supposed to be called every 10ms, e.g. PlayoutData10Ms(),
-// however, it is useful to know the number of such calls in a given time
-// interval. The current implementation covers calls to PlayoutData10Ms() with
-// detailed accounting of the decoded speech type.
-//
-// Thread Safety
-// =============
-// Please note that this class in not thread safe. The class must be protected
-// if different APIs are called from different threads.
-//
-
-namespace webrtc {
-
-namespace acm2 {
-
-class CallStatistics {
- public:
-  CallStatistics() {}
-  ~CallStatistics() {}
-
-  // Call this method to indicate that NetEq engaged in decoding. |speech_type|
-  // is the audio-type according to NetEq.
-  void DecodedByNetEq(AudioFrame::SpeechType speech_type);
-
-  // Call this method to indicate that a decoding call resulted in generating
-  // silence, i.e. call to NetEq is bypassed and the output audio is zero.
-  void DecodedBySilenceGenerator();
-
-  // Get statistics for decoding. The statistics include the number of calls to
-  // NetEq and silence generator, as well as the type of speech pulled of off
-  // NetEq, c.f. declaration of AudioDecodingCallStats for detailed description.
-  const AudioDecodingCallStats& GetDecodingStatistics() const;
-
- private:
-  // Reset the decoding statistics.
-  void ResetDecodingStatistics();
-
-  AudioDecodingCallStats decoding_stat_;
-};
-
-}  // namespace acm2
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_MODULES_AUDIO_CODING_MAIN_ACM2_CALL_STATISTICS_H_