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 #include <android/hardware/drm/1.1/ICryptoFactory.h> 24 #include <android/hardware/drm/1.2/ICryptoPlugin.h> 25 26 #include <mediadrm/ICrypto.h> 27 #include <utils/KeyedVector.h> 28 #include <utils/threads.h> 29 30 namespace drm = ::android::hardware::drm; 31 using drm::V1_0::ICryptoFactory; 32 using drm::V1_0::ICryptoPlugin; 33 using drm::V1_0::SharedBuffer; 34 35 class IMemoryHeap; 36 37 namespace android { 38 39 struct CryptoHal : public BnCrypto { 40 CryptoHal(); 41 virtual ~CryptoHal(); 42 43 virtual status_t initCheck() const; 44 45 virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]); 46 47 virtual status_t createPlugin( 48 const uint8_t uuid[16], const void *data, size_t size); 49 50 virtual status_t destroyPlugin(); 51 52 virtual bool requiresSecureDecoderComponent( 53 const char *mime) const; 54 55 virtual void notifyResolution(uint32_t width, uint32_t height); 56 57 virtual status_t setMediaDrmSession(const Vector<uint8_t> &sessionId); 58 59 virtual ssize_t decrypt(const uint8_t key[16], const uint8_t iv[16], 60 CryptoPlugin::Mode mode, const CryptoPlugin::Pattern &pattern, 61 const ICrypto::SourceBuffer &source, size_t offset, 62 const CryptoPlugin::SubSample *subSamples, size_t numSubSamples, 63 const ICrypto::DestinationBuffer &destination, 64 AString *errorDetailMsg); 65 66 virtual int32_t setHeap(const sp<IMemoryHeap>& heap) { 67 return setHeapBase(heap); 68 } 69 virtual void unsetHeap(int32_t seqNum) { clearHeapBase(seqNum); } 70 71 private: 72 mutable Mutex mLock; 73 74 const Vector<sp<ICryptoFactory>> mFactories; 75 sp<ICryptoPlugin> mPlugin; 76 sp<drm::V1_2::ICryptoPlugin> mPluginV1_2; 77 78 /** 79 * mInitCheck is: 80 * NO_INIT if a plugin hasn't been created yet 81 * ERROR_UNSUPPORTED if a plugin can't be created for the uuid 82 * OK after a plugin has been created and mPlugin is valid 83 */ 84 status_t mInitCheck; 85 86 struct HeapBase { 87 HeapBase() : mBufferId(0), mSize(0) {} 88 HeapBase(uint32_t bufferId, size_t size) : 89 mBufferId(bufferId), mSize(size) {} 90 91 uint32_t getBufferId() const {return mBufferId;} 92 size_t getSize() const {return mSize;} 93 94 private: 95 uint32_t mBufferId; 96 size_t mSize; 97 }; 98 99 KeyedVector<int32_t, HeapBase> mHeapBases; 100 uint32_t mNextBufferId; 101 int32_t mHeapSeqNum; 102 103 Vector<sp<ICryptoFactory>> makeCryptoFactories(); 104 sp<ICryptoPlugin> makeCryptoPlugin(const sp<ICryptoFactory>& factory, 105 const uint8_t uuid[16], const void *initData, size_t size); 106 107 int32_t setHeapBase(const sp<IMemoryHeap>& heap); 108 void clearHeapBase(int32_t seqNum); 109 110 status_t toSharedBuffer(const sp<IMemory>& memory, int32_t seqNum, ::SharedBuffer* buffer); 111 112 DISALLOW_EVIL_CONSTRUCTORS(CryptoHal); 113 }; 114 115 } // namespace android 116 117 #endif // CRYPTO_HAL_H_ 118
