Creating the audio_modem component

components/copresence/public/copresence_constants.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_COPRESENCE_PUBLIC_COPRESENCE_CONSTANTS_H_
 #define COMPONENTS_COPRESENCE_PUBLIC_COPRESENCE_CONSTANTS_H_
 
 #include <google/protobuf/repeated_field.h>
 
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/memory/ref_counted.h"
 #include "components/copresence/tokens.h"
 #include "media/base/channel_layout.h"
 
 namespace media {
 class AudioBusRefCounted;
 }
 
 namespace copresence {
 
 class Directive;
 class SubscribedMessage;
 
-// Audio constants. Currently used from the AudioPlayer/AudioRecorder.
-// TODO(rkc): Make these values configurable then remove them from here.
-// Number of repetitions of the audio token in one sequence of samples.
-extern const int kDefaultRepetitions;
-
-// The default sample rate. We need to ensure that both the recorder and the
-// player on _all platforms use the same rate.
-extern const float kDefaultSampleRate;
-extern const int kDefaultBitsPerSample;
-
-// 18500 for ultrasound, needs to be consistent between platforms.
-extern const float kDefaultCarrierFrequency;
-
-// The next two really need to be configurable since they don't need to be
-// consistent across platforms, or even playing/recording.
-extern const int kDefaultChannels;
-extern const media::ChannelLayout kDefaultChannelLayout;
-
-// Shared structs with whispernet. TODO(rkc): These will be removed once we can
-// get protobufs working with Nacl. At that point, we'll just pass in
-// config_data.proto to the whispernet nacl wrapper directly.
-
-// We will be using fixed types in all these structures since they will be
-// stuffed into a string and then read on the other side via a completely
-// different toolchain. The struct is in its own namespace to disambiguate it
-// from the protobuf structures.
-
-namespace config {
-
-struct AudioDsssParams {
-  int64_t include_parity_symbol;
-  int64_t use_single_sideband;
-  double desired_carrier_frequency;
-  int64_t use_crc_16;
-  double coder_sample_rate;
-  int64_t bits_per_symbol;
-  int64_t min_cycles_per_frame;
-  int64_t baseband_decimation_factor;
-  int64_t upsampling_factor;
-  int64_t num_repetitions_to_play;
-};
-
-struct AdsrParams {
-  int64_t attack_time_millis;
-  int64_t decay_time_millis;
-  int64_t sustain_time_millis;
-  int64_t release_time_millis;
-  double sustain_amplitude;
-};
-
-struct AudioDtmfParams {
-  int64_t include_parity_symbol;
-  int64_t use_crc_16;
-  double coder_sample_rate;
-  int64_t baseband_decimation_factor;
-  int64_t frequencies_per_symbol;
-  int64_t window_duration_millis;
-  AdsrParams adsr_params;
-  int64_t num_repetitions_to_play;
-};
-
-struct LoggerParam {
-  int64_t clear_cached_request_duration_millis;
-  int64_t request_buffer_limit;
-};
-
-struct AudioParamData {
-  LoggerParam logger;
-  AudioDsssParams audio_dsss;
-  AudioDtmfParams audio_dtmf;
-  int64_t recording_channels;
-};
-
-}  // namespace config
-
-// These constants are used from everywhere.
-// Particularly, these are used to index the directive lists in the
-// audio manager, so do not change these enums without changing
-// audio_directive_list.[h|cc].
-enum AudioType {
-  AUDIBLE = 0,
-  INAUDIBLE = 1,
-  BOTH = 2,
-  AUDIO_TYPE_UNKNOWN = 3,
-};
-
-
-// These callbacks are used from various places in Copresence.
-
-// Generic callback to indicate a boolean success or failure.
-using SuccessCallback = base::Callback<void(bool)>;
-
-// Callback to pass around found tokens.
-using TokensCallback = base::Callback<void(const std::vector<AudioToken>&)>;
-
-// Callback to receive encoded samples from Whispernet.
-// AudioType type: Type of audio encoding - AUDIBLE or INAUDIBLE.
-// const std::string& token: The token that we encoded.
-// const scoped_refptr<media::AudioBusRefCounted>& samples - Encoded samples.
-using SamplesCallback =
-    base::Callback<void(AudioType,
-                        const std::string&,
-                        const scoped_refptr<media::AudioBusRefCounted>&)>;
-
 // Callback to pass a list of directives back to CopresenceState.
 using DirectivesCallback = base::Callback<void(const std::vector<Directive>&)>;
 
 // Callback to pass around a list of SubscribedMessages.
 using MessagesCallback = base::Callback<void(
     const google::protobuf::RepeatedPtrField<SubscribedMessage>&)>;
 
 }  // namespace copresence
 
 #endif  // COMPONENTS_COPRESENCE_PUBLIC_COPRESENCE_CONSTANTS_H_