/* * 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 MODULES_AUDIO_DEVICE_ANDROID_AUDIO_COMMON_H_ #define MODULES_AUDIO_DEVICE_ANDROID_AUDIO_COMMON_H_ namespace webrtc { const int kDefaultSampleRate = 44100; // Delay estimates for the two different supported modes. These values are based // on real-time round-trip delay estimates on a large set of devices and they // are lower bounds since the filter length is 128 ms, so the AEC works for // delays in the range [50, ~170] ms and [150, ~270] ms. Note that, in most // cases, the lowest delay estimate will not be utilized since devices that // support low-latency output audio often supports HW AEC as well. const int kLowLatencyModeDelayEstimateInMilliseconds = 50; const int kHighLatencyModeDelayEstimateInMilliseconds = 150; } // namespace webrtc #endif // MODULES_AUDIO_DEVICE_ANDROID_AUDIO_COMMON_H_