1 /* 2 * Copyright 2016, 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 SECURE_BUFFER_H_ 18 19 #define SECURE_BUFFER_H_ 20 21 #include <media/ICrypto.h> 22 #include <media/MediaCodecBuffer.h> 23 24 namespace android { 25 26 class NativeHandle; 27 28 /** 29 * Secure MediaCodecBuffer implementation. 30 * 31 * For classes outside of MediaCodec, this buffer is an opaque buffer only with 32 * the size information. For decryption, it exposes underlying handle/pointer 33 * and its type, which can be fed to ICrypto::decrypt(). 34 */ 35 class SecureBuffer : public MediaCodecBuffer { 36 public: 37 SecureBuffer(const sp<AMessage> &format, const void *ptr, size_t size); 38 SecureBuffer(const sp<AMessage> &format, const sp<NativeHandle> &handle, size_t size); 39 40 virtual ~SecureBuffer() = default; 41 42 void *getDestinationPointer(); 43 ICrypto::DestinationType getDestinationType(); 44 45 private: 46 SecureBuffer() = delete; 47 48 const void *mPointer; 49 const sp<NativeHandle> mHandle; 50 }; 51 52 } // namespace android 53 54 #endif // SECURE_BUFFER_H_ 55
