| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef MEDIA_CDM_PLAYER_TRACKER_IMPL_H_ |
| #define MEDIA_CDM_PLAYER_TRACKER_IMPL_H_ |
| |
| #include <map> |
| |
| #include "base/callback.h" |
| #include "base/macros.h" |
| #include "base/synchronization/lock.h" |
| #include "base/thread_annotations.h" |
| #include "media/base/media_export.h" |
| #include "media/base/player_tracker.h" |
| |
| namespace media { |
| |
| // A common implementation that can be shared by different PlayerTracker |
| // implementations. This class is thread safe and can be called on any thread. |
| class MEDIA_EXPORT PlayerTrackerImpl : public PlayerTracker { |
| public: |
| PlayerTrackerImpl(); |
| ~PlayerTrackerImpl() override; |
| |
| // PlayerTracker implementation. |
| int RegisterPlayer(const base::Closure& new_key_cb, |
| const base::Closure& cdm_unset_cb) override; |
| void UnregisterPlayer(int registration_id) override; |
| |
| // Helpers methods to fire registered callbacks. |
| void NotifyNewKey(); |
| void NotifyCdmUnset(); |
| |
| private: |
| struct PlayerCallbacks { |
| PlayerCallbacks(const base::Closure& new_key_cb, |
| const base::Closure& cdm_unset_cb); |
| PlayerCallbacks(const PlayerCallbacks& other); |
| ~PlayerCallbacks(); |
| |
| base::Closure new_key_cb; |
| base::Closure cdm_unset_cb; |
| }; |
| |
| base::Lock lock_; |
| int next_registration_id_ GUARDED_BY(lock_); |
| std::map<int, PlayerCallbacks> player_callbacks_map_ GUARDED_BY(lock_); |
| |
| DISALLOW_COPY_AND_ASSIGN(PlayerTrackerImpl); |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_CDM_PLAYER_TRACKER_IMPL_H_ |