1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef CRYPTO_H_ 18 19 #define CRYPTO_H_ 20 21 #include <media/ICrypto.h> 22 #include <utils/threads.h> 23 #include <utils/KeyedVector.h> 24 25 #include "SharedLibrary.h" 26 27 namespace android { 28 29 struct CryptoFactory; 30 struct CryptoPlugin; 31 32 struct Crypto : public BnCrypto { 33 Crypto(); 34 virtual ~Crypto(); 35 36 virtual status_t initCheck() const; 37 38 virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]); 39 40 virtual status_t createPlugin( 41 const uint8_t uuid[16], const void *data, size_t size); 42 43 virtual status_t destroyPlugin(); 44 45 virtual bool requiresSecureDecoderComponent( 46 const char *mime) const; 47 48 virtual void notifyResolution(uint32_t width, uint32_t height); 49 50 virtual ssize_t decrypt( 51 bool secure, 52 const uint8_t key[16], 53 const uint8_t iv[16], 54 CryptoPlugin::Mode mode, 55 const void *srcPtr, 56 const CryptoPlugin::SubSample *subSamples, size_t numSubSamples, 57 void *dstPtr, 58 AString *errorDetailMsg); 59 60 private: 61 mutable Mutex mLock; 62 63 status_t mInitCheck; 64 sp<SharedLibrary> mLibrary; 65 CryptoFactory *mFactory; 66 CryptoPlugin *mPlugin; 67 68 static KeyedVector<Vector<uint8_t>, String8> mUUIDToLibraryPathMap; 69 static KeyedVector<String8, wp<SharedLibrary> > mLibraryPathToOpenLibraryMap; 70 static Mutex mMapLock; 71 72 void findFactoryForScheme(const uint8_t uuid[16]); 73 bool loadLibraryForScheme(const String8 &path, const uint8_t uuid[16]); 74 void closeFactory(); 75 76 DISALLOW_EVIL_CONSTRUCTORS(Crypto); 77 }; 78 79 } // namespace android 80 81 #endif // CRYPTO_H_ 82
