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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef HTMLMediaElementEncryptedMedia_h |
| 6 #define HTMLMediaElementEncryptedMedia_h |
| 7 |
| 8 #include "core/events/EventTarget.h" |
| 9 #include "heap/Handle.h" |
| 10 #include "platform/Supplementable.h" |
| 11 #include "platform/graphics/media/MediaPlayer.h" |
| 12 #include "public/platform/WebMediaPlayerClient.h" |
| 13 #include "wtf/Forward.h" |
| 14 |
| 15 namespace WebCore { |
| 16 |
| 17 class ExceptionState; |
| 18 class HTMLMediaElement; |
| 19 class MediaKeys; |
| 20 |
| 21 class HTMLMediaElementEncryptedMedia : public Supplement<HTMLMediaElement> { |
| 22 public: |
| 23 // encrypted media extensions (v0.1b) |
| 24 static void webkitGenerateKeyRequest(HTMLMediaElement&, const String& keySys
tem, PassRefPtr<Uint8Array> initData, ExceptionState&); |
| 25 static void webkitGenerateKeyRequest(HTMLMediaElement&, const String& keySys
tem, ExceptionState&); |
| 26 static void webkitAddKey(HTMLMediaElement&, const String& keySystem, PassRef
Ptr<Uint8Array> key, PassRefPtr<Uint8Array> initData, const String& sessionId, E
xceptionState&); |
| 27 static void webkitAddKey(HTMLMediaElement&, const String& keySystem, PassRef
Ptr<Uint8Array> key, ExceptionState&); |
| 28 static void webkitCancelKeyRequest(HTMLMediaElement&, const String& keySyste
m, const String& sessionId, ExceptionState&); |
| 29 |
| 30 DEFINE_STATIC_ATTRIBUTE_EVENT_LISTENER(webkitkeyadded); |
| 31 DEFINE_STATIC_ATTRIBUTE_EVENT_LISTENER(webkitkeyerror); |
| 32 DEFINE_STATIC_ATTRIBUTE_EVENT_LISTENER(webkitkeymessage); |
| 33 DEFINE_STATIC_ATTRIBUTE_EVENT_LISTENER(webkitneedkey); |
| 34 |
| 35 // encrypted media extensions (WD) |
| 36 static MediaKeys* mediaKeys(HTMLMediaElement&); |
| 37 static void setMediaKeys(HTMLMediaElement&, MediaKeys*, ExceptionState&); |
| 38 DEFINE_STATIC_ATTRIBUTE_EVENT_LISTENER(needkey); |
| 39 |
| 40 static void keyAdded(HTMLMediaElement&, const String& keySystem, const Strin
g& sessionId); |
| 41 static void keyError(HTMLMediaElement&, const String& keySystem, const Strin
g& sessionId, blink::WebMediaPlayerClient::MediaKeyErrorCode, unsigned short sys
temCode); |
| 42 static void keyMessage(HTMLMediaElement&, const String& keySystem, const Str
ing& sessionId, const unsigned char* message, unsigned messageLength, const blin
k::WebURL& defaultURL); |
| 43 static void keyNeeded(HTMLMediaElement&, const String& contentType, const un
signed char* initData, unsigned initDataLength); |
| 44 static void playerDestroyed(HTMLMediaElement&); |
| 45 static blink::WebContentDecryptionModule* contentDecryptionModule(HTMLMediaE
lement&); |
| 46 |
| 47 virtual ~HTMLMediaElementEncryptedMedia(); |
| 48 static HTMLMediaElementEncryptedMedia& from(HTMLMediaElement&); |
| 49 static const char* supplementName(); |
| 50 |
| 51 private: |
| 52 HTMLMediaElementEncryptedMedia(); |
| 53 void generateKeyRequest(blink::WebMediaPlayer*, const String& keySystem, Pas
sRefPtr<Uint8Array> initData, ExceptionState&); |
| 54 void addKey(blink::WebMediaPlayer*, const String& keySystem, PassRefPtr<Uint
8Array> key, PassRefPtr<Uint8Array> initData, const String& sessionId, Exception
State&); |
| 55 void cancelKeyRequest(blink::WebMediaPlayer*, const String& keySystem, const
String& sessionId, ExceptionState&); |
| 56 |
| 57 // EventTarget |
| 58 bool setAttributeEventListener(const AtomicString& eventType, PassRefPtr<Eve
ntListener>); |
| 59 EventListener* getAttributeEventListener(const AtomicString& eventType); |
| 60 |
| 61 // Currently we have both EME v0.1b and EME WD implemented in media element. |
| 62 // But we do not want to support both at the same time. The one used first |
| 63 // will be supported. Use |m_emeMode| to track this selection. |
| 64 // FIXME: Remove EmeMode once EME v0.1b support is removed. See crbug.com/24
9976. |
| 65 enum EmeMode { EmeModeNotSelected, EmeModePrefixed, EmeModeUnprefixed }; |
| 66 |
| 67 // check (and set if necessary) the encrypted media extensions (EME) mode |
| 68 // (v0.1b or WD). Returns whether the mode is allowed and successfully set. |
| 69 bool setEmeMode(EmeMode, ExceptionState&); |
| 70 |
| 71 blink::WebContentDecryptionModule* contentDecryptionModule(); |
| 72 void setMediaKeysInternal(HTMLMediaElement&, MediaKeys*); |
| 73 |
| 74 EmeMode m_emeMode; |
| 75 |
| 76 RefPtrWillBePersistent<MediaKeys> m_mediaKeys; |
| 77 }; |
| 78 |
| 79 } |
| 80 |
| 81 #endif |
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