ICrypto.h revision ed3e3e046840d5bf1ca84a8c0cc097425e89d6d6 
1/*
2 * Copyright (C) 2012 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#include <binder/IInterface.h>
18#include <media/stagefright/foundation/ABase.h>
19
20#ifndef ANDROID_ICRYPTO_H_
21
22#define ANDROID_ICRYPTO_H_
23
24namespace android {
25
26struct ICrypto : public IInterface {
27    DECLARE_META_INTERFACE(Crypto);
28
29    virtual status_t initialize() = 0;
30    virtual status_t terminate() = 0;
31
32    virtual status_t setEntitlementKey(
33            const void *key, size_t keyLength) = 0;
34
35    virtual status_t setEntitlementControlMessage(
36            const void *msg, size_t msgLength) = 0;
37
38    // "dstData" is in media_server's address space (but inaccessible).
39    virtual ssize_t decryptVideo(
40            const void *iv, size_t ivLength,
41            const void *srcData, size_t srcDataSize,
42            void *dstData, size_t dstDataOffset) = 0;
43
44    // "dstData" is in the calling process' address space.
45    virtual ssize_t decryptAudio(
46            const void *iv, size_t ivLength,
47            const void *srcData, size_t srcDataSize,
48            void *dstData, size_t dstDataSize) = 0;
49
50private:
51    DISALLOW_EVIL_CONSTRUCTORS(ICrypto);
52};
53
54struct BnCrypto : public BnInterface<ICrypto> {
55    virtual status_t onTransact(
56            uint32_t code, const Parcel &data, Parcel *reply,
57            uint32_t flags = 0);
58};
59
60}  // namespace android
61
62#endif // ANDROID_ICRYPTO_H_
63
64