1 /* 2 * Copyright (C) 2013 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef MediaKeys_h 27 #define MediaKeys_h 28 29 #include "bindings/core/v8/ScriptPromise.h" 30 #include "bindings/core/v8/ScriptWrappable.h" 31 #include "core/dom/ContextLifecycleObserver.h" 32 #include "wtf/Forward.h" 33 #include "wtf/text/WTFString.h" 34 35 namespace blink { 36 37 class ExceptionState; 38 class ExecutionContext; 39 class HTMLMediaElement; 40 class MediaKeySession; 41 class ScriptState; 42 class WebContentDecryptionModule; 43 44 // References are held by JS and HTMLMediaElement. 45 // The WebContentDecryptionModule has the same lifetime as this object. 46 class MediaKeys : public GarbageCollectedFinalized<MediaKeys>, public ContextLifecycleObserver, public ScriptWrappable { 47 DEFINE_WRAPPERTYPEINFO(); 48 public: 49 static ScriptPromise create(ScriptState*, const String& keySystem); 50 virtual ~MediaKeys(); 51 keySystem()52 const String& keySystem() const { return m_keySystem; } 53 54 MediaKeySession* createSession(ScriptState*, const String& sessionType); 55 56 static bool isTypeSupported(const String& keySystem, const String& contentType); 57 58 blink::WebContentDecryptionModule* contentDecryptionModule(); 59 60 void trace(Visitor*); 61 62 // ContextLifecycleObserver 63 virtual void contextDestroyed() OVERRIDE; 64 65 private: 66 friend class MediaKeysInitializer; 67 MediaKeys(ExecutionContext*, const String& keySystem, PassOwnPtr<blink::WebContentDecryptionModule>); 68 69 const String m_keySystem; 70 OwnPtr<blink::WebContentDecryptionModule> m_cdm; 71 }; 72 73 } // namespace blink 74 75 #endif // MediaKeys_h 76