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 #include <binder/IInterface.h> 18 #include <media/stagefright/foundation/ABase.h> 19 #include <media/hardware/CryptoAPI.h> 20 21 #ifndef ANDROID_ICRYPTO_H_ 22 23 #define ANDROID_ICRYPTO_H_ 24 25 namespace android { 26 27 struct AString; 28 class IMemory; 29 30 struct ICrypto : public IInterface { 31 DECLARE_META_INTERFACE(Crypto); 32 33 virtual status_t initCheck() const = 0; 34 35 virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]) = 0; 36 37 virtual status_t createPlugin( 38 const uint8_t uuid[16], const void *data, size_t size) = 0; 39 40 virtual status_t destroyPlugin() = 0; 41 42 virtual bool requiresSecureDecoderComponent( 43 const char *mime) const = 0; 44 45 virtual void notifyResolution(uint32_t width, uint32_t height) = 0; 46 47 virtual status_t setMediaDrmSession(const Vector<uint8_t> &sessionId) = 0; 48 49 enum DestinationType { 50 kDestinationTypeVmPointer, // non-secure 51 kDestinationTypeOpaqueHandle, // secure 52 kDestinationTypeNativeHandle // secure 53 }; 54 55 virtual ssize_t decrypt( 56 DestinationType dstType, 57 const uint8_t key[16], 58 const uint8_t iv[16], 59 CryptoPlugin::Mode mode, 60 const CryptoPlugin::Pattern &pattern, 61 const sp<IMemory> &sharedBuffer, size_t offset, 62 const CryptoPlugin::SubSample *subSamples, size_t numSubSamples, 63 void *dstPtr, 64 AString *errorDetailMsg) = 0; 65 66 private: 67 DISALLOW_EVIL_CONSTRUCTORS(ICrypto); 68 }; 69 70 struct BnCrypto : public BnInterface<ICrypto> { 71 virtual status_t onTransact( 72 uint32_t code, const Parcel &data, Parcel *reply, 73 uint32_t flags = 0); 74 private: 75 void readVector(const Parcel &data, Vector<uint8_t> &vector) const; 76 void writeVector(Parcel *reply, Vector<uint8_t> const &vector) const; 77 }; 78 79 } // namespace android 80 81 #endif // ANDROID_ICRYPTO_H_ 82