1/* 2 * Copyright (C) 2012 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#import "config.h" 27#import "CDMPrivateAVFoundation.h" 28 29#if ENABLE(ENCRYPTED_MEDIA_V2) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 30 31#import "CDM.h" 32#import "ExceptionCode.h" 33#import "MediaPlayer.h" 34#import "MediaPlayerPrivateAVFoundationObjC.h" 35#import "SoftLinking.h" 36#import "UUID.h" 37#import <AVFoundation/AVFoundation.h> 38#import <objc/objc-runtime.h> 39 40namespace WebCore { 41 42class CDMSessionAVFoundation : public CDMSession { 43public: 44 CDMSessionAVFoundation(CDMPrivateAVFoundation* parent); 45 virtual ~CDMSessionAVFoundation() { } 46 47 virtual const String& sessionId() const OVERRIDE { return m_sessionId; } 48 virtual PassRefPtr<Uint8Array> generateKeyRequest(const String& mimeType, Uint8Array* initData, String& destinationURL, unsigned short& errorCode, unsigned long& systemCode) OVERRIDE; 49 virtual void releaseKeys() OVERRIDE; 50 virtual bool update(Uint8Array*, RefPtr<Uint8Array>& nextMessage, unsigned short& errorCode, unsigned long& systemCode) OVERRIDE; 51 52protected: 53 CDMPrivateAVFoundation* m_parent; 54 String m_sessionId; 55 RetainPtr<AVAssetResourceLoadingRequest> m_request; 56}; 57 58SOFT_LINK_FRAMEWORK_OPTIONAL(AVFoundation) 59SOFT_LINK_CLASS(AVFoundation, AVURLAsset) 60SOFT_LINK_CLASS(AVFoundation, AVAssetResourceLoadingRequest) 61#define AVURLAsset getAVURLAssetClass() 62#define AVAssetResourceLoadingRequest getAVAssetResourceLoadingRequest() 63 64 65bool CDMPrivateAVFoundation::supportsKeySystem(const String& keySystem) 66{ 67 return equalIgnoringCase(keySystem, "com.apple.fps") || equalIgnoringCase(keySystem, "com.apple.fps.1_0"); 68} 69 70bool CDMPrivateAVFoundation::supportsKeySystemAndMimeType(const String& keySystem, const String& mimeType) 71{ 72 if (!supportsKeySystem(keySystem)) 73 return false; 74 return [AVURLAsset isPlayableExtendedMIMEType:mimeType]; 75} 76 77bool CDMPrivateAVFoundation::supportsMIMEType(const String& mimeType) 78{ 79 return [AVURLAsset isPlayableExtendedMIMEType:mimeType]; 80} 81 82PassOwnPtr<CDMSession> CDMPrivateAVFoundation::createSession() 83{ 84 return adoptPtr(new CDMSessionAVFoundation(this)); 85} 86 87CDMSessionAVFoundation::CDMSessionAVFoundation(CDMPrivateAVFoundation* parent) 88 : m_parent(parent) 89 , m_sessionId(createCanonicalUUIDString()) 90{ 91} 92 93PassRefPtr<Uint8Array> CDMSessionAVFoundation::generateKeyRequest(const String& mimeType, Uint8Array* initData, String& destinationURL, unsigned short& errorCode, unsigned long& systemCode) 94{ 95 UNUSED_PARAM(mimeType); 96 97 MediaPlayer* mediaPlayer = m_parent->cdm()->mediaPlayer(); 98 if (!mediaPlayer) { 99 errorCode = NOT_SUPPORTED_ERR; 100 return 0; 101 } 102 103 String keyURI; 104 String keyID; 105 RefPtr<Uint8Array> certificate; 106 if (!MediaPlayerPrivateAVFoundationObjC::extractKeyURIKeyIDAndCertificateFromInitData(initData, keyURI, keyID, certificate)) { 107 errorCode = INVALID_STATE_ERR; 108 return 0; 109 } 110 111 m_request = MediaPlayerPrivateAVFoundationObjC::takeRequestForPlayerAndKeyURI(mediaPlayer, keyURI); 112 if (!m_request) { 113 errorCode = INVALID_STATE_ERR; 114 return 0; 115 } 116 117 m_sessionId = createCanonicalUUIDString(); 118 119 RetainPtr<NSData> certificateData = adoptNS([[NSData alloc] initWithBytes:certificate->baseAddress() length:certificate->byteLength()]); 120 NSString* assetStr = keyID; 121 RetainPtr<NSData> assetID = [NSData dataWithBytes: [assetStr cStringUsingEncoding:NSUTF8StringEncoding] length:[assetStr lengthOfBytesUsingEncoding:NSUTF8StringEncoding]]; 122 NSError* error = 0; 123 RetainPtr<NSData> keyRequest = [m_request.get() streamingContentKeyRequestDataForApp:certificateData.get() contentIdentifier:assetID.get() options:nil error:&error]; 124 125 if (!keyRequest) { 126 NSError* underlyingError = [[error userInfo] objectForKey:NSUnderlyingErrorKey]; 127 errorCode = CDM::DomainError; 128 systemCode = [underlyingError code]; 129 return 0; 130 } 131 132 errorCode = 0; 133 systemCode = 0; 134 destinationURL = String(); 135 136 RefPtr<ArrayBuffer> keyRequestBuffer = ArrayBuffer::create([keyRequest.get() bytes], [keyRequest.get() length]); 137 return Uint8Array::create(keyRequestBuffer, 0, keyRequestBuffer->byteLength()); 138} 139 140void CDMSessionAVFoundation::releaseKeys() 141{ 142} 143 144bool CDMSessionAVFoundation::update(Uint8Array* key, RefPtr<Uint8Array>& nextMessage, unsigned short& errorCode, unsigned long& systemCode) 145{ 146 if (!key) 147 return false; 148 149 RetainPtr<NSData> keyData = adoptNS([[NSData alloc] initWithBytes:key->baseAddress() length:key->byteLength()]); 150 [[m_request.get() dataRequest] respondWithData:keyData.get()]; 151 [m_request.get() finishLoading]; 152 errorCode = 0; 153 systemCode = 0; 154 nextMessage = nullptr; 155 m_request = nullptr; 156 157 return true; 158} 159 160} 161 162#endif 163