You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.6 KiB
57 lines
1.6 KiB
4 months ago
|
/*
|
||
|
* 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_
|