components/copresence/public/copresence_constants.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_COPRESENCE_PUBLIC_COPRESENCE_CONSTANTS_
   6 #define COMPONENTS_COPRESENCE_PUBLIC_COPRESENCE_CONSTANTS_
   7
   8 #include "media/base/channel_layout.h"
   9
  10 namespace copresence {
  11
  12 // Audio constants. Currently used from the AudioPlayer/AudioRecorder.
  13 // TODO(rkc): Make these values configurable then remove them from here.
  14 // Number of repetitions of the audio token in one sequence of samples.
  15 extern const int kDefaultRepetitions;
  16
  17 // The default sample rate. We need to ensure that both the recorder and the
  18 // player on _all platforms use the same rate.
  19 extern const float kDefaultSampleRate;
  20 extern const int kDefaultBitsPerSample;
  21
  22 // 18500 for ultrasound, needs to be consistent between platforms.
  23 extern const float kDefaultCarrierFrequency;
  24
  25 // The next two really need to be configurable since they don't need to be
  26 // consistent across platforms, or even playing/recording.
  27 extern const int kDefaultChannels;
  28 extern const media::ChannelLayout kDefaultChannelLayout;
  29
  30 }  // namespace copresence
  31
  32 #endif  // COMPONENTS_COPRESENCE_PUBLIC_COPRESENCE_CONSTANTS_