StreamStateBase.h

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// Copyright (c) 2017 Computer Vision Center (CVC) at the Universitat Autonoma
// de Barcelona (UAB).
//
// This work is licensed under the terms of the MIT license.
// For a copy, see <https://opensource.org/licenses/MIT>.
 
#pragma once
 
#include "carla/NonCopyable.h"
#include "carla/streaming/detail/Session.h"
#include "carla/streaming/detail/Token.h"
 
#include <memory>
 
namespace carla {
 
  class BufferPool;
 
namespace streaming {
namespace detail {
 
  /// Shared state among all the copies of a stream. Provides access to the
  /// underlying server session(s) if active.
  class StreamStateBase : private NonCopyable {
  public:
 
    explicit StreamStateBase(const token_type &token);
 
    virtual ~StreamStateBase();
 
    const token_type &token() const {
      return _token;
    }
 
    Buffer MakeBuffer();
 
    virtual void ConnectSession(std::shared_ptr<Session> session) = 0;
 
    virtual void DisconnectSession(std::shared_ptr<Session> session) = 0;
 
    virtual void ClearSessions() = 0;
 
  private:
 
    const token_type _token;
 
    const std::shared_ptr<BufferPool> _buffer_pool;
  };
 
} // namespace detail
} // namespace streaming
} // namespace carla