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#include "config.h" 27 28#if ENABLE(ENCRYPTED_MEDIA_V2) 29 30#include "CDM.h" 31 32#include "CDMPrivateMediaPlayer.h" 33#include "CDMSession.h" 34#include "MediaKeyError.h" 35#include "MediaKeys.h" 36#include <wtf/NeverDestroyed.h> 37#include <wtf/text/WTFString.h> 38 39namespace WebCore { 40 41struct CDMFactory { 42 WTF_MAKE_NONCOPYABLE(CDMFactory); WTF_MAKE_FAST_ALLOCATED; 43public: 44 CDMFactory(CreateCDM constructor, CDMSupportsKeySystem supportsKeySystem, CDMSupportsKeySystemAndMimeType supportsKeySystemAndMimeType) 45 : constructor(constructor) 46 , supportsKeySystem(supportsKeySystem) 47 , supportsKeySystemAndMimeType(supportsKeySystemAndMimeType) 48 { 49 } 50 51 CreateCDM constructor; 52 CDMSupportsKeySystem supportsKeySystem; 53 CDMSupportsKeySystemAndMimeType supportsKeySystemAndMimeType; 54}; 55 56static Vector<CDMFactory*>& installedCDMFactories() 57{ 58 static NeverDestroyed<Vector<CDMFactory*>> cdms; 59 static bool queriedCDMs = false; 60 if (!queriedCDMs) { 61 queriedCDMs = true; 62 63 // FIXME: initialize specific UA CDMs. http://webkit.org/b/109318, http://webkit.org/b/109320 64 cdms.get().append(new CDMFactory(CDMPrivateMediaPlayer::create, CDMPrivateMediaPlayer::supportsKeySystem, CDMPrivateMediaPlayer::supportsKeySystemAndMimeType)); 65 } 66 67 return cdms; 68} 69 70void CDM::registerCDMFactory(CreateCDM constructor, CDMSupportsKeySystem supportsKeySystem, CDMSupportsKeySystemAndMimeType supportsKeySystemAndMimeType) 71{ 72 installedCDMFactories().append(new CDMFactory(constructor, supportsKeySystem, supportsKeySystemAndMimeType)); 73} 74 75static CDMFactory* CDMFactoryForKeySystem(const String& keySystem) 76{ 77 Vector<CDMFactory*>& cdmFactories = installedCDMFactories(); 78 for (size_t i = 0; i < cdmFactories.size(); ++i) { 79 if (cdmFactories[i]->supportsKeySystem(keySystem)) 80 return cdmFactories[i]; 81 } 82 return 0; 83} 84 85bool CDM::supportsKeySystem(const String& keySystem) 86{ 87 return CDMFactoryForKeySystem(keySystem); 88} 89 90bool CDM::keySystemSupportsMimeType(const String& keySystem, const String& mimeType) 91{ 92 if (CDMFactory* factory = CDMFactoryForKeySystem(keySystem)) 93 return factory->supportsKeySystemAndMimeType(keySystem, mimeType); 94 return false; 95} 96 97std::unique_ptr<CDM> CDM::create(const String& keySystem) 98{ 99 if (!supportsKeySystem(keySystem)) 100 return nullptr; 101 102 return std::make_unique<CDM>(keySystem); 103} 104 105CDM::CDM(const String& keySystem) 106 : m_keySystem(keySystem) 107 , m_client(0) 108{ 109 m_private = CDMFactoryForKeySystem(keySystem)->constructor(this); 110} 111 112CDM::~CDM() 113{ 114} 115 116bool CDM::supportsMIMEType(const String& mimeType) const 117{ 118 return m_private->supportsMIMEType(mimeType); 119} 120 121std::unique_ptr<CDMSession> CDM::createSession() 122{ 123 return m_private->createSession(); 124} 125 126MediaPlayer* CDM::mediaPlayer() const 127{ 128 if (!m_client) 129 return 0; 130 return m_client->cdmMediaPlayer(this); 131} 132 133} 134 135#endif // ENABLE(ENCRYPTED_MEDIA_V2) 136