146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)// Copyright 2014 The Chromium Authors. All rights reserved. 246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)// found in the LICENSE file. 446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#ifndef MEDIA_BASE_PLAYER_TRACKER_H_ 646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#define MEDIA_BASE_PLAYER_TRACKER_H_ 746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include "base/basictypes.h" 946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include "base/callback.h" 1046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include "media/base/media_export.h" 1146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 1246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)namespace media { 1346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 1446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)// An interface for players to register to be notified when a new decryption key 1546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)// becomes available or when the CDM is unset. 1646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)class MEDIA_EXPORT PlayerTracker { 1746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) public: 1846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual ~PlayerTracker(); 1946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 2046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // Registers player callbacks with the CDM. 2146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // - |new_key_cb| is fired when a new decryption key becomes available. 2246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // - |cdm_unset_cb| is fired when the CDM is detached from the player. 2346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // Returns a registration ID which can be used to unregister a player. 2446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual int RegisterPlayer(const base::Closure& new_key_cb, 2546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) const base::Closure& cdm_unset_cb) = 0; 2646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 2746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // Unregisters a previously registered player. This should be called when 2846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // the CDM is detached from the player (e.g. setMediaKeys(0)), or when the 2946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // player is destroyed. 3046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual void UnregisterPlayer(int registration_id) = 0; 3146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 3246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) protected: 3346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) PlayerTracker(); 3446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 3546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) private: 3646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(PlayerTracker); 3746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)}; 3846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 3946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)} // namespace media 4046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 4146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#endif // MEDIA_BASE_PLAYER_TRACKER_H_ 42