Home | History | Annotate | Download | only in copresence 
      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 CHROME_BROWSER_COPRESENCE_CHROME_WHISPERNET_CLIENT_H_
      6 #define CHROME_BROWSER_COPRESENCE_CHROME_WHISPERNET_CLIENT_H_
      7 
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "base/callback.h"
     12 #include "base/macros.h"
     13 #include "components/copresence/public/whispernet_client.h"
     14 
     15 namespace content {
     16 class BrowserContext;
     17 }
     18 
     19 namespace extensions {
     20 namespace api {
     21 namespace copresence_private {
     22 struct AudioParameters;
     23 }
     24 }
     25 }
     26 
     27 namespace media {
     28 class AudioBusRefCounted;
     29 }
     30 
     31 // This class is responsible for communication with our ledger_proxy extension
     32 // that talks to the whispernet audio library.
     33 class ChromeWhispernetClient : public copresence::WhispernetClient {
     34  public:
     35   // The browser context needs to outlive this class.
     36   explicit ChromeWhispernetClient(content::BrowserContext* browser_context);
     37   virtual ~ChromeWhispernetClient();
     38 
     39   // WhispernetClient overrides:
     40   virtual void Initialize(const SuccessCallback& init_callback) OVERRIDE;
     41   virtual void Shutdown() OVERRIDE;
     42 
     43   virtual void EncodeToken(const std::string& token, bool audible) OVERRIDE;
     44   virtual void DecodeSamples(const std::string& samples) OVERRIDE;
     45   virtual void DetectBroadcast() OVERRIDE;
     46 
     47   virtual void RegisterTokensCallback(
     48       const TokensCallback& tokens_callback) OVERRIDE;
     49   virtual void RegisterSamplesCallback(
     50       const SamplesCallback& samples_callback) OVERRIDE;
     51   virtual void RegisterDetectBroadcastCallback(
     52       const SuccessCallback& db_callback) OVERRIDE;
     53 
     54   virtual TokensCallback GetTokensCallback() OVERRIDE;
     55   virtual SamplesCallback GetSamplesCallback() OVERRIDE;
     56   virtual SuccessCallback GetDetectBroadcastCallback() OVERRIDE;
     57   virtual SuccessCallback GetInitializedCallback() OVERRIDE;
     58 
     59   static const char kWhispernetProxyExtensionId[];
     60 
     61  private:
     62   // Fire an event to initialize whispernet with the given parameters.
     63   void InitializeWhispernet(
     64       const extensions::api::copresence_private::AudioParameters& params);
     65 
     66   // This gets called twice; once when the proxy extension loads, the second
     67   // time when we have initialized the proxy extension's encoder and decoder.
     68   void OnExtensionLoaded(bool success);
     69 
     70   content::BrowserContext* browser_context_;
     71 
     72   SuccessCallback extension_loaded_callback_;
     73   SuccessCallback init_callback_;
     74 
     75   TokensCallback tokens_callback_;
     76   SamplesCallback samples_callback_;
     77   SuccessCallback db_callback_;
     78 
     79   bool extension_loaded_;
     80 
     81   DISALLOW_COPY_AND_ASSIGN(ChromeWhispernetClient);
     82 };
     83 
     84 #endif  // CHROME_BROWSER_COPRESENCE_CHROME_WHISPERNET_CLIENT_H_
     85