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      1 /*
      2  * Copyright (C) 2013 Google 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "core/platform/graphics/ContentDecryptionModule.h"
     33 
     34 #include "core/platform/NotImplemented.h"
     35 #include "core/platform/graphics/ContentDecryptionModuleSession.h"
     36 #include "public/platform/Platform.h"
     37 
     38 namespace WebCore {
     39 
     40 bool ContentDecryptionModule::supportsKeySystem(const String& keySystem)
     41 {
     42     // FIXME: Chromium should handle this, possibly using
     43     // MIMETypeRegistry::isSupportedEncryptedMediaMIMEType().
     44     notImplemented();
     45     return keySystem == "org.w3.clearkey";
     46 }
     47 
     48 PassOwnPtr<ContentDecryptionModule> ContentDecryptionModule::create(const String& keySystem)
     49 {
     50     ASSERT(!keySystem.isEmpty());
     51     OwnPtr<WebKit::WebContentDecryptionModule> cdm = adoptPtr(WebKit::Platform::current()->createContentDecryptionModule(keySystem));
     52     if (!cdm)
     53         return nullptr;
     54     return adoptPtr(new ContentDecryptionModule(cdm.release()));
     55 }
     56 
     57 ContentDecryptionModule::ContentDecryptionModule(PassOwnPtr<WebKit::WebContentDecryptionModule> cdm)
     58     : m_cdm(cdm)
     59 {
     60     ASSERT(m_cdm);
     61 }
     62 
     63 ContentDecryptionModule::~ContentDecryptionModule()
     64 {
     65 }
     66 
     67 bool ContentDecryptionModule::supportsMIMEType(const String& mimeType)
     68 {
     69     // FIXME: Chromium should handle this, possibly using
     70     // MIMETypeRegistry::isSupportedEncryptedMediaMIMEType().
     71     notImplemented();
     72     return mimeType == "video/webm";
     73 }
     74 
     75 PassOwnPtr<ContentDecryptionModuleSession> ContentDecryptionModule::createSession(ContentDecryptionModuleSessionClient* client)
     76 {
     77     return adoptPtr(new ContentDecryptionModuleSession(m_cdm.get(), client));
     78 }
     79 
     80 } // namespace WebCore
     81