| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef KEY_FETCHER_H_ |
| #define KEY_FETCHER_H_ |
| |
| #include <vector> |
| |
| #include <media/stagefright/foundation/ABuffer.h> |
| #include <utils/Errors.h> |
| |
| using namespace std; |
| |
| namespace android { |
| namespace clearkeycas { |
| |
| // Interface for classes which extract the content key from an Ecm. |
| class KeyFetcher { |
| public: |
| struct KeyInfo { |
| sp<ABuffer> key_bytes; |
| int key_id; |
| }; |
| |
| KeyFetcher() {} |
| virtual ~KeyFetcher() {} |
| |
| // Initializes resources set in subclass-specific calls. This must be called |
| // before threads are started. |
| virtual status_t Init() = 0; |
| |
| // Obtains content key(s) based on contents of |ecm|. |asset_id| is the |
| // internal id of the asset, |keys| is a vector containing instances of a |
| // class containing a content key and an id. |asset_id| and |keys| are |
| // owned by the caller and must be non-null. |
| virtual status_t ObtainKey(const sp<ABuffer>& ecm, |
| uint64_t* asset_id, vector<KeyInfo>* keys) = 0; |
| }; |
| |
| } // namespace clearkeycas |
| } // namespace android |
| |
| #endif // KEY_FETCHER_H_ |