1/*
2 * Copyright (C) 2017 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 LICENSE_FETCHER_H_
18#define LICENSE_FETCHER_H_
19
20#include "protos/license_protos.pb.h"
21#include <media/stagefright/foundation/ABase.h>
22
23namespace android {
24namespace clearkeycas {
25
26// Interface for classes which request a license.
27class LicenseFetcher {
28public:
29    LicenseFetcher() {}
30    virtual ~LicenseFetcher() {}
31
32    // Initializes resources set in subclass-specific calls. This must be called
33    // before threads are started.
34    virtual status_t Init(const char *input) = 0;
35
36    // Fetches license based on |asset_id|.  On return, |asset| contains the
37    // decrypted asset_key needed to decrypt content keys.
38    // |asset| must be non-null.
39    virtual status_t FetchLicense(
40            uint64_t asset_id, clearkeycas::Asset* asset) = 0;
41
42private:
43    DISALLOW_EVIL_CONSTRUCTORS(LicenseFetcher);
44};
45
46}  // namespace clearkeycas
47}  // namespace android
48
49#endif  // LICENSE_FETCHER_H_
50