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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_CRYPTO_PLUGIN_H_
     18 #define CLEARKEY_CRYPTO_PLUGIN_H_
     19 
     20 #include <media/hardware/CryptoAPI.h>
     21 #include <media/stagefright/foundation/ABase.h>
     22 #include <media/stagefright/foundation/AString.h>
     23 #include <utils/Errors.h>
     24 #include <utils/StrongPointer.h>
     25 
     26 #include "ClearKeyTypes.h"
     27 #include "Session.h"
     28 #include "Utils.h"
     29 
     30 namespace clearkeydrm {
     31 
     32 class CryptoPlugin : public android::CryptoPlugin {
     33 public:
     34     CryptoPlugin(const android::Vector<uint8_t>& sessionId) {
     35         mInitStatus = setMediaDrmSession(sessionId);
     36     }
     37 
     38     virtual ~CryptoPlugin() {}
     39 
     40     virtual bool requiresSecureDecoderComponent(const char* mime) const {
     41         UNUSED(mime);
     42         return false;
     43     }
     44 
     45     virtual ssize_t decrypt(
     46             bool secure, const KeyId keyId, const Iv iv,
     47             Mode mode, const Pattern &pattern, const void* srcPtr,
     48             const SubSample* subSamples, size_t numSubSamples,
     49             void* dstPtr, android::AString* errorDetailMsg);
     50 
     51     virtual android::status_t setMediaDrmSession(
     52             const android::Vector<uint8_t>& sessionId);
     53 
     54     android::status_t getInitStatus() const {return mInitStatus;}
     55 
     56 private:
     57     DISALLOW_EVIL_CONSTRUCTORS(CryptoPlugin);
     58 
     59     android::sp<Session> mSession;
     60     android::status_t mInitStatus;
     61 };
     62 
     63 } // namespace clearkeydrm
     64 
     65 #endif // CLEARKEY_CRYPTO_PLUGIN_H_
     66