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/callback.h"
  11 #include "base/macros.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "components/copresence/handlers/audio/audio_directive_handler.h"
  14 #include "components/copresence/mediums/audio/audio_recorder.h"
  15
  16 namespace copresence {
  17
  18 class Directive;
  19
  20 // The directive handler manages transmit and receive directives
  21 // given to it by the manager.
  22 class DirectiveHandler {
  23  public:
  24   DirectiveHandler();
  25   virtual ~DirectiveHandler();
  26
  27   // Initialize the |audio_handler_| with the appropriate callbacks.
  28   // This function must be called before any others.
  29   // TODO(ckehoe): Instead of this, use a static Create() method
  30   //               and make the constructor private.
  31   virtual void Initialize(
  32       const AudioRecorder::DecodeSamplesCallback& decode_cb,
  33       const AudioDirectiveHandler::EncodeTokenCallback& encode_cb);
  34
  35   // Adds a directive to handle.
  36   virtual void AddDirective(const copresence::Directive& directive);
  37   // Removes any directives associated with the given operation id.
  38   virtual void RemoveDirectives(const std::string& op_id);
  39
  40   const std::string& CurrentAudibleToken() const;
  41   const std::string& CurrentInaudibleToken() const;
  42
  43  private:
  44   scoped_ptr<AudioDirectiveHandler> audio_handler_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(DirectiveHandler);
  47 };
  48
  49 }  // namespace copresence
  50
  51 #endif  // COMPONENTS_COPRESENCE_HANDLERS_DIRECTIVE_HANDLER_H_