components/copresence/handlers/directive_handler.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_HANDLERS_DIRECTIVE_HANDLER_H_
   6 #define COMPONENTS_COPRESENCE_HANDLERS_DIRECTIVE_HANDLER_H_
   7
   8 #include <string>
   9
  10 #include "base/macros.h"
  11 #include "components/audio_modem/public/whispernet_client.h"
  12
  13 namespace copresence {
  14
  15 class Directive;
  16
  17 // The directive handler manages transmit and receive directives.
  18 class DirectiveHandler {
  19  public:
  20   DirectiveHandler() {}
  21   virtual ~DirectiveHandler() {}
  22
  23   // Starts processing directives with the provided Whispernet delegate.
  24   // Directives will be queued until this function is called.
  25   // |whispernet_client| is owned by the caller and must outlive the
  26   // DirectiveHandler.
  27   // |tokens_cb| is called for all audio tokens found in recorded audio.
  28   // TODO(ckehoe): This is no longer needed. Merge into the constructor.
  29   virtual void Start(audio_modem::WhispernetClient* whispernet_client,
  30                      const audio_modem::TokensCallback& tokens_cb) = 0;
  31
  32   // Adds a directive to handle.
  33   virtual void AddDirective(const Directive& directive) = 0;
  34
  35   // Removes any directives associated with the given operation id.
  36   virtual void RemoveDirectives(const std::string& op_id) = 0;
  37
  38   // TODO(ckehoe): Move the Modem to be owned by CopresenceManager.
  39   // Then this will not need to be passed all the way down the tree.
  40   virtual const std::string
  41   GetCurrentAudioToken(audio_modem::AudioType type) const = 0;
  42   virtual bool IsAudioTokenHeard(audio_modem::AudioType type) const = 0;
  43
  44  private:
  45   DISALLOW_COPY_AND_ASSIGN(DirectiveHandler);
  46 };
  47
  48 }  // namespace copresence
  49
  50 #endif  // COMPONENTS_COPRESENCE_HANDLERS_DIRECTIVE_HANDLER_H_