// Copyright 2019 The TAL Authors. All rights reserved.
#ifndef LIB_OWCR_EXTENSION_PUBLIC_IEXTENSION_MEDIAAPPLY_DELEGATE_
#define LIB_OWCR_EXTENSION_PUBLIC_IEXTENSION_MEDIAAPPLY_DELEGATE_

#include <set>
#include <mutex>

class IExtensionMediaListener;
namespace owcr {
namespace extension {
class IExtensionMediaApplyDelegate {
 public:
  IExtensionMediaApplyDelegate() {}
  virtual ~IExtensionMediaApplyDelegate() {}

  virtual int AddListener(IExtensionMediaListener* listener) = 0;
  virtual int RemoveListener(IExtensionMediaListener* listener) = 0;

 protected:
  std::set<IExtensionMediaListener*> media_listeners_;
  std::mutex mutex_listener_;

  /*virtual void OnError(
      const char* provider_name,
      const char* provider_name_length,
      const char* reason,
      int reason_length) = 0;*/
};

}  // namespace extension
}  // namespace owcr

#endif  // LIB_OWCR_EXTENSION_PUBLIC_IEXTENSION_MEDIAAPPLY_DELEGATE_