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:
CryptoPlugin(const android::Vector<uint8_t> & sessionId)34     explicit CryptoPlugin(const android::Vector<uint8_t>& sessionId) {
35         mInitStatus = setMediaDrmSession(sessionId);
36     }
37 
~CryptoPlugin()38     virtual ~CryptoPlugin() {}
39 
requiresSecureDecoderComponent(const char * mime)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 
getInitStatus()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