1 /* 2 * Copyright (C) 2017 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_HAL_H_ 18 19 #define CRYPTO_HAL_H_ 20 21 #include <android/hardware/drm/1.0/ICryptoFactory.h> 22 #include <android/hardware/drm/1.0/ICryptoPlugin.h> 23 24 #include <media/ICrypto.h> 25 #include <utils/KeyedVector.h> 26 #include <utils/threads.h> 27 28 using ::android::hardware::drm::V1_0::ICryptoFactory; 29 using ::android::hardware::drm::V1_0::ICryptoPlugin; 30 using ::android::hardware::drm::V1_0::SharedBuffer; 31 32 class IMemoryHeap; 33 34 namespace android { 35 36 struct CryptoHal : public BnCrypto { 37 CryptoHal(); 38 virtual ~CryptoHal(); 39 40 virtual status_t initCheck() const; 41 42 virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]); 43 44 virtual status_t createPlugin( 45 const uint8_t uuid[16], const void *data, size_t size); 46 47 virtual status_t destroyPlugin(); 48 49 virtual bool requiresSecureDecoderComponent( 50 const char *mime) const; 51 52 virtual void notifyResolution(uint32_t width, uint32_t height); 53 54 virtual status_t setMediaDrmSession(const Vector<uint8_t> &sessionId); 55 56 virtual ssize_t decrypt(const uint8_t key[16], const uint8_t iv[16], 57 CryptoPlugin::Mode mode, const CryptoPlugin::Pattern &pattern, 58 const ICrypto::SourceBuffer &source, size_t offset, 59 const CryptoPlugin::SubSample *subSamples, size_t numSubSamples, 60 const ICrypto::DestinationBuffer &destination, 61 AString *errorDetailMsg); 62 setHeapCryptoHal63 virtual int32_t setHeap(const sp<IMemoryHeap>& heap) { 64 return setHeapBase(heap); 65 } unsetHeapCryptoHal66 virtual void unsetHeap(int32_t seqNum) { clearHeapBase(seqNum); } 67 68 private: 69 mutable Mutex mLock; 70 71 const Vector<sp<ICryptoFactory>> mFactories; 72 sp<ICryptoPlugin> mPlugin; 73 74 /** 75 * mInitCheck is: 76 * NO_INIT if a plugin hasn't been created yet 77 * ERROR_UNSUPPORTED if a plugin can't be created for the uuid 78 * OK after a plugin has been created and mPlugin is valid 79 */ 80 status_t mInitCheck; 81 82 KeyedVector<int32_t, uint32_t> mHeapBases; 83 uint32_t mNextBufferId; 84 int32_t mHeapSeqNum; 85 86 Vector<sp<ICryptoFactory>> makeCryptoFactories(); 87 sp<ICryptoPlugin> makeCryptoPlugin(const sp<ICryptoFactory>& factory, 88 const uint8_t uuid[16], const void *initData, size_t size); 89 90 int32_t setHeapBase(const sp<IMemoryHeap>& heap); 91 void clearHeapBase(int32_t seqNum); 92 93 status_t toSharedBuffer(const sp<IMemory>& memory, int32_t seqNum, ::SharedBuffer* buffer); 94 95 DISALLOW_EVIL_CONSTRUCTORS(CryptoHal); 96 }; 97 98 } // namespace android 99 100 #endif // CRYPTO_HAL_H_ 101