Make unprefixed EME APIs use platform and Chromium.

Source/modules/encryptedmedia/MediaKeys.cpp

 /*
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  */
 
 #include "config.h"
 #include "modules/encryptedmedia/MediaKeys.h"
 
 #if ENABLE(ENCRYPTED_MEDIA_V2)
 
 #include "core/dom/EventNames.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/platform/UUID.h"
-#include "modules/encryptedmedia/CDM.h"
+#include "core/platform/graphics/CDM.h"
 #include "modules/encryptedmedia/MediaKeyMessageEvent.h"
 #include "modules/encryptedmedia/MediaKeySession.h"
 #include "wtf/HashSet.h"
 
 namespace WebCore {
 
 PassRefPtr<MediaKeys> MediaKeys::create(const String& keySystem, ExceptionCode& ec)
 {
-    // From <http://dvcs.w3.org/hg/html-media/raw-file/tip/encrypted-media/encrypted-media.html#dom-media-keys-constructor>:
+    // From <http://dvcs.w3.org/hg/html-media/raw-file/default/encrypted-media/encrypted-media.html#dom-media-keys-constructor>:
     // The MediaKeys(keySystem) constructor must run the following steps:
 
     // 1. If keySystem is null or an empty string, throw an INVALID_ACCESS_ERR exception and abort these steps.
     if (keySystem.isNull() || keySystem.isEmpty()) {
         ec = INVALID_ACCESS_ERR;
         return 0;
     }
 
     // 2. If keySystem is not one of the user agent's supported Key Systems, throw a NOT_SUPPORTED_ERR and abort these steps.
     if (!CDM::supportsKeySystem(keySystem)) {
         ec = NOT_SUPPORTED_ERR;
         return 0;
     }
 
     // 3. Let cdm be the content decryption module corresponding to keySystem.
     // 4. Load cdm if necessary.
     OwnPtr<CDM> cdm = CDM::create(keySystem);
+    if (!cdm) {
+        ec = NOT_SUPPORTED_ERR;
+        return 0;
+    }
 
     // 5. Create a new MediaKeys object.
     // 5.1 Let the keySystem attribute be keySystem.
     // 6. Return the new object to the caller.
     return adoptRef(new MediaKeys(keySystem, cdm.release()));
 }
 
 MediaKeys::MediaKeys(const String& keySystem, PassOwnPtr<CDM> cdm)
     : m_mediaElement(0)
     , m_keySystem(keySystem)
     , m_cdm(cdm)
 {
     ScriptWrappable::init(this);
-    m_cdm->setClient(this);
 }
 
 MediaKeys::~MediaKeys()
 {
-    // From <http://dvcs.w3.org/hg/html-media/raw-file/tip/encrypted-media/encrypted-media.html#dom-media-keys-constructor>:
+    // From <http://dvcs.w3.org/hg/html-media/raw-file/default/encrypted-media/encrypted-media.html#dom-media-keys-constructor>:
     // When destroying a MediaKeys object, follow the steps in close().
-    for (size_t i = 0; i < m_sessions.size(); ++i) {
+    for (size_t i = 0; i < m_sessions.size(); ++i)
         m_sessions[i]->close();
-        m_sessions[i]->setKeys(0);
-    }
 }
 
 PassRefPtr<MediaKeySession> MediaKeys::createSession(ScriptExecutionContext* context, const String& type, Uint8Array* initData, ExceptionCode& ec)
 {
-    // From <http://dvcs.w3.org/hg/html-media/raw-file/tip/encrypted-media/encrypted-media.html#dom-createsession>:
+    // From <http://dvcs.w3.org/hg/html-media/raw-file/default/encrypted-media/encrypted-media.html#dom-createsession>:
     // The createSession(type, initData) method must run the following steps:
     // Note: The contents of initData are container-specific Initialization Data.
 
     // 1. If type is null or an empty string and initData is not null or an empty string, throw an
     // INVALID_ACCESS_ERR exception and abort these steps.
     if ((type.isNull() || type.isEmpty()) && (!initData || initData->length())) {
         ec = INVALID_ACCESS_ERR;
         return 0;
     }
 
     // 2. If type contains a MIME type that is not supported or is not supported by the keySystem, throw
     // a NOT_SUPPORTED_ERR exception and abort these steps.
-    if (!type.isNull() && !type.isEmpty() && !m_cdm->supportsMIMEType(type)) {
+    ASSERT(!type.isNull() && !type.isEmpty());
+    if (type.isNull() || type.isEmpty() || !m_cdm->supportsMIMEType(type)) {
         ec = NOT_SUPPORTED_ERR;
         return 0;
     }
 
     // 3. Create a new MediaKeySession object.
+    RefPtr<MediaKeySession> session = MediaKeySession::create(context, *m_cdm, this);
     // 3.1 Let the keySystem attribute be keySystem.
+    ASSERT(!session->keySystem().isEmpty());
     // 3.2 Let the sessionId attribute be a unique Session ID string. It may be generated by cdm.
-    RefPtr<MediaKeySession> session = MediaKeySession::create(context, this, keySystem());
+    // This is handled by m_cdm and may happen asynchronously.
 
     // 4. Add the new object to an internal list of session objects.
     m_sessions.append(session);
 
     // 5. Schedule a task to generate a key request, providing type, initData, and the new object.
     session->generateKeyRequest(type, initData);
 
     // 6. Return the new object to the caller.
     return session;
 }
 
 void MediaKeys::setMediaElement(HTMLMediaElement* element)
 {
+    // FIXME: Cause HTMLMediaElement::setMediaKeys() to throw an exception if m_mediaElement is not 0.
+    // FIXME: Hook up the CDM to the WebMediaPlayer in Chromium.
+    ASSERT(!m_mediaElement);
     m_mediaElement = element;
 }
 
-MediaPlayer* MediaKeys::cdmMediaPlayer(const CDM*) const
-{
-    if (m_mediaElement)
-        return m_mediaElement->player();
-    return 0;
-}
-
 }
 
 #endif