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      1 /*
      2  * Copyright (C) 2014 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 CLEARKEY_SESSION_H_
     18 #define CLEARKEY_SESSION_H_
     19 
     20 #include <media/stagefright/foundation/ABase.h>
     21 #include <utils/Errors.h>
     22 #include <utils/Mutex.h>
     23 #include <utils/RefBase.h>
     24 #include <utils/String8.h>
     25 #include <utils/Vector.h>
     26 
     27 #include "ClearKeyTypes.h"
     28 #include "Utils.h"
     29 
     30 namespace clearkeydrm {
     31 
     32 class Session : public android::RefBase {
     33 public:
     34     explicit Session(const android::Vector<uint8_t>& sessionId)
     35             : mSessionId(sessionId) {}
     36     virtual ~Session() {}
     37 
     38     const android::Vector<uint8_t>& sessionId() const { return mSessionId; }
     39 
     40     android::status_t getKeyRequest(
     41             const android::Vector<uint8_t>& mimeType,
     42             const android::String8& initDataType,
     43             android::Vector<uint8_t>* keyRequest) const;
     44 
     45     android::status_t provideKeyResponse(
     46             const android::Vector<uint8_t>& response);
     47 
     48     android::status_t decrypt(
     49             const KeyId keyId, const Iv iv, const void* source,
     50             void* destination, const SubSample* subSamples,
     51             size_t numSubSamples, size_t* bytesDecryptedOut);
     52 
     53 private:
     54     DISALLOW_EVIL_CONSTRUCTORS(Session);
     55 
     56     const android::Vector<uint8_t> mSessionId;
     57 
     58     android::Mutex mMapLock;
     59     KeyMap mKeyMap;
     60 };
     61 
     62 } // namespace clearkeydrm
     63 
     64 #endif // CLEARKEY_SESSION_H_
     65