chrome/browser/copresence/chrome_whispernet_client.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 CHROME_BROWSER_COPRESENCE_CHROME_WHISPERNET_CLIENT_H_
   6 #define CHROME_BROWSER_COPRESENCE_CHROME_WHISPERNET_CLIENT_H_
   7
   8 #include <string>
   9
  10 #include "base/callback.h"
  11 #include "base/macros.h"
  12 #include "base/memory/scoped_vector.h"
  13 #include "chrome/browser/copresence/chrome_whispernet_config.h"
  14 #include "components/audio_modem/public/whispernet_client.h"
  15
  16 namespace content {
  17 class BrowserContext;
  18 }
  19
  20 namespace extensions {
  21
  22 struct Event;
  23 class EventRouter;
  24
  25 namespace api {
  26 namespace copresence_private {
  27 struct AudioParameters;
  28 }
  29 }
  30
  31 }  // namespace extensions
  32
  33 namespace media {
  34 class AudioBusRefCounted;
  35 }
  36
  37 // This class is responsible for communication with our whispernet_proxy
  38 // extension that talks to the whispernet audio library.
  39 class ChromeWhispernetClient final : public audio_modem::WhispernetClient {
  40  public:
  41   // The browser context needs to outlive this class.
  42   explicit ChromeWhispernetClient(content::BrowserContext* browser_context);
  43   ~ChromeWhispernetClient() override;
  44
  45   // WhispernetClient overrides:
  46   void Initialize(const audio_modem::SuccessCallback& init_callback) override;
  47   void EncodeToken(const std::string& token_str,
  48                    audio_modem::AudioType type,
  49                    const audio_modem::TokenParameters token_params[2]) override;
  50   void DecodeSamples(
  51       audio_modem::AudioType type,
  52       const std::string& samples,
  53       const audio_modem::TokenParameters token_params[2]) override;
  54   void RegisterTokensCallback(
  55       const audio_modem::TokensCallback& tokens_callback) override;
  56   void RegisterSamplesCallback(
  57       const audio_modem::SamplesCallback& samples_callback) override;
  58
  59   audio_modem::TokensCallback GetTokensCallback() override;
  60   audio_modem::SamplesCallback GetSamplesCallback() override;
  61   audio_modem::SuccessCallback GetInitializedCallback() override;
  62
  63   static const char kWhispernetProxyExtensionId[];
  64
  65  private:
  66   // Fire an event to configure whispernet with the given audio parameters.
  67   void AudioConfiguration(const AudioParamData& params);
  68
  69   void SendEventIfLoaded(scoped_ptr<extensions::Event> event);
  70
  71   // This gets called when the proxy extension loads.
  72   void OnExtensionLoaded(bool success);
  73
  74   content::BrowserContext* const browser_context_;
  75   extensions::EventRouter* const event_router_;
  76   std::string client_id_;
  77
  78   audio_modem::SuccessCallback extension_loaded_callback_;
  79   audio_modem::SuccessCallback init_callback_;
  80
  81   audio_modem::TokensCallback tokens_callback_;
  82   audio_modem::SamplesCallback samples_callback_;
  83
  84   ScopedVector<extensions::Event> queued_events_;
  85   bool extension_loaded_;
  86
  87   DISALLOW_COPY_AND_ASSIGN(ChromeWhispernetClient);
  88 };
  89
  90 #endif  // CHROME_BROWSER_COPRESENCE_CHROME_WHISPERNET_CLIENT_H_