Creating the audio_modem component

components/audio_modem/public/whispernet_client.h

Index: components/audio_modem/public/whispernet_client.h
diff --git a/components/copresence/public/whispernet_client.h b/components/audio_modem/public/whispernet_client.h
similarity index 58%
rename from components/copresence/public/whispernet_client.h
rename to components/audio_modem/public/whispernet_client.h
index e8a1cd30aff1350e13897e0997c913afc549af98..c7219c8ff2d263a8822de593d77f12aacad6cbf1 100644
--- a/components/copresence/public/whispernet_client.h
+++ b/components/audio_modem/public/whispernet_client.h
@@ -2,30 +2,36 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_COPRESENCE_PUBLIC_WHISPERNET_CLIENT_H_
-#define COMPONENTS_COPRESENCE_PUBLIC_WHISPERNET_CLIENT_H_
+#ifndef COMPONENTS_AUDIO_MODEM_PUBLIC_WHISPERNET_CLIENT_H_
+#define COMPONENTS_AUDIO_MODEM_PUBLIC_WHISPERNET_CLIENT_H_
 
 #include <string>
 
-#include "components/copresence/public/copresence_constants.h"
+#include "base/memory/ref_counted.h"
+#include "components/audio_modem/public/audio_modem_types.h"
+#include "media/base/audio_bus.h"
 
-namespace media {
-class AudioBusRefCounted;
-}
+namespace audio_modem {
 
-namespace copresence {
+// Generic callback to indicate a boolean success or failure.
+using SuccessCallback = base::Callback<void(bool)>;
 
-// The interface that the whispernet client needs to implement. These methods
-// provide us the ability to use the audio medium in copresence. Currently since
-// the only medium that copresence uses is audio, the implementation of this
-// interface is required.
+// 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>&)>;
+
+// A client for the Whispernet audio library,
+// responsible for the actual encoding and decoding of tokens.
 class WhispernetClient {
  public:
   // Initialize the whispernet client and call the callback when done. The
   // parameter indicates whether we succeeded or failed.
   virtual void Initialize(const SuccessCallback& init_callback) = 0;
-  // Copresence will call this before making any calls to its destructors.
-  virtual void Shutdown() = 0;
 
   // Fires an event to request a token encode.
   virtual void EncodeToken(const std::string& token, AudioType type) = 0;
@@ -36,8 +42,7 @@ class WhispernetClient {
   // Fires an event to request detection of a whispernet broadcast.
   virtual void DetectBroadcast() = 0;
 
-  // Callback registreation methods. These are the callbacks that will be
-  // registered by Copresence to receive data.
+  // Callback registration methods. The modem will set these to receive data.
   virtual void RegisterTokensCallback(
       const TokensCallback& tokens_callback) = 0;
   virtual void RegisterSamplesCallback(
@@ -55,6 +60,6 @@ class WhispernetClient {
   virtual ~WhispernetClient() {}
 };
 
-}  // namespace copresence
+}  // namespace audio_modem
 
-#endif  // COMPONENTS_COPRESENCE_PUBLIC_WHISPERNET_CLIENT_H_
+#endif  // COMPONENTS_AUDIO_MODEM_PUBLIC_WHISPERNET_CLIENT_H_