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      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_
     52