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 <cutils/native_handle.h> 18 #include <media/hardware/CryptoAPI.h> 19 #include <media/stagefright/foundation/ABase.h> 20 #include <utils/RefBase.h> 21 #include <utils/StrongPointer.h> 22 23 #ifndef ANDROID_ICRYPTO_H_ 24 25 #define ANDROID_ICRYPTO_H_ 26 27 namespace android { 28 namespace hardware { 29 class HidlMemory; 30 namespace drm { 31 namespace V1_0 { 32 struct SharedBuffer; 33 struct DestinationBuffer; 34 } // namespace V1_0 35 36 namespace V1_4 { 37 struct LogMessage; 38 } // namespace V1_4 39 } // namespace drm 40 } // namespace hardware 41 } // namespace android 42 43 namespace drm = ::android::hardware::drm; 44 using drm::V1_0::SharedBuffer; 45 46 namespace android { 47 48 struct AString; 49 50 struct ICrypto : public RefBase { 51 ~ICryptoICrypto52 virtual ~ICrypto() {} 53 54 virtual status_t initCheck() const = 0; 55 56 virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]) = 0; 57 58 virtual status_t createPlugin( 59 const uint8_t uuid[16], const void *data, size_t size) = 0; 60 61 virtual status_t destroyPlugin() = 0; 62 63 virtual bool requiresSecureDecoderComponent( 64 const char *mime) const = 0; 65 66 virtual void notifyResolution(uint32_t width, uint32_t height) = 0; 67 68 virtual status_t setMediaDrmSession(const Vector<uint8_t> &sessionId) = 0; 69 70 enum DestinationType { 71 kDestinationTypeSharedMemory, // non-secure 72 kDestinationTypeNativeHandle // secure 73 }; 74 75 virtual ssize_t decrypt(const uint8_t /*key*/[16], const uint8_t /*iv*/[16], 76 CryptoPlugin::Mode /*mode*/, const CryptoPlugin::Pattern &/*pattern*/, 77 const drm::V1_0::SharedBuffer &/*source*/, size_t /*offset*/, 78 const CryptoPlugin::SubSample * /*subSamples*/, size_t /*numSubSamples*/, 79 const drm::V1_0::DestinationBuffer &/*destination*/, AString * /*errorDetailMsg*/) = 0; 80 81 /** 82 * Declare the heap that the shared memory source buffers passed 83 * to decrypt will be allocated from. Returns a sequence number 84 * that subsequent decrypt calls can use to refer to the heap, 85 * with -1 indicating failure. 86 */ 87 virtual int32_t setHeap(const sp<hardware::HidlMemory>& heap) = 0; 88 virtual void unsetHeap(int32_t seqNum) = 0; 89 90 virtual status_t getLogMessages(Vector<drm::V1_4::LogMessage> &logs) const = 0; 91 92 protected: ICryptoICrypto93 ICrypto() {} 94 95 private: 96 DISALLOW_EVIL_CONSTRUCTORS(ICrypto); 97 }; 98 99 } // namespace android 100 101 #endif // ANDROID_ICRYPTO_H_ 102