Adding metrics to AEC3

webrtc/modules/audio_processing/aec3/aec3_common.h

 /*
  *  Copyright (c) 2016 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_PROCESSING_AEC3_AEC3_COMMON_H_
 #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_AEC3_COMMON_H_
 
 #include <stddef.h>
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 
 #ifdef _MSC_VER /* visual c++ */
 #define ALIGN16_BEG __declspec(align(16))
 #define ALIGN16_END
 #else /* gcc or icc */
 #define ALIGN16_BEG
 #define ALIGN16_END __attribute__((aligned(16)))
 #endif
 
 enum class Aec3Optimization { kNone, kSse2 };
 
+constexpr int kMetricsReportingInterval = 10 * 250;

[hlundin-webrtc, 2017/02/28 10:04:22]

What is the unit? Milliseconds?

[peah-webrtc, 2017/02/28 12:57:25]

Done.

+constexpr int kMetricsComputationBlocks = 10;
+constexpr int kMetricsCollectionBlocks =
+    kMetricsReportingInterval - kMetricsComputationBlocks;
+
 constexpr size_t kFftLengthBy2 = 64;
 constexpr size_t kFftLengthBy2Plus1 = kFftLengthBy2 + 1;
 constexpr size_t kFftLengthBy2Minus1 = kFftLengthBy2 - 1;
 constexpr size_t kFftLength = 2 * kFftLengthBy2;
 
 constexpr size_t kMaxNumBands = 3;
 constexpr size_t kSubFrameLength = 80;
 
 constexpr size_t kBlockSize = kFftLengthBy2;
 constexpr size_t kExtendedBlockSize = 2 * kFftLengthBy2;
@@ skipping 35 matching lines @@
 static_assert(ValidFullBandRate(32000),
               "Test that 32 kHz is a valid sample rate");
 static_assert(ValidFullBandRate(48000),
               "Test that 48 kHz is a valid sample rate");
 static_assert(!ValidFullBandRate(8001),
               "Test that 8001 Hz is not a valid sample rate");
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_AEC3_COMMON_H_