ICrypto.h revision 1849570240443d1f75775c205fa658f7070849c6 
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#include <media/hardware/CryptoAPI.h>
20
21#ifndef ANDROID_ICRYPTO_H_
22
23#define ANDROID_ICRYPTO_H_
24
25namespace android {
26
27struct AString;
28struct IMemory;
29
30struct ICrypto : public IInterface {
31    DECLARE_META_INTERFACE(Crypto);
32
33    virtual status_t initCheck() const = 0;
34
35    virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]) = 0;
36
37    virtual status_t createPlugin(
38            const uint8_t uuid[16], const void *data, size_t size) = 0;
39
40    virtual status_t destroyPlugin() = 0;
41
42    virtual bool requiresSecureDecoderComponent(
43            const char *mime) const = 0;
44
45    virtual void notifyResolution(uint32_t width, uint32_t height) = 0;
46
47    virtual status_t setMediaDrmSession(const Vector<uint8_t> &sessionId) = 0;
48
49    virtual ssize_t decrypt(
50            bool secure,
51            const uint8_t key[16],
52            const uint8_t iv[16],
53            CryptoPlugin::Mode mode,
54            const sp<IMemory> &sharedBuffer, size_t offset,
55            const CryptoPlugin::SubSample *subSamples, size_t numSubSamples,
56            void *dstPtr,
57            AString *errorDetailMsg) = 0;
58
59private:
60    DISALLOW_EVIL_CONSTRUCTORS(ICrypto);
61};
62
63struct BnCrypto : public BnInterface<ICrypto> {
64    virtual status_t onTransact(
65            uint32_t code, const Parcel &data, Parcel *reply,
66            uint32_t flags = 0);
67private:
68    void readVector(const Parcel &data, Vector<uint8_t> &vector) const;
69    void writeVector(Parcel *reply, Vector<uint8_t> const &vector) const;
70};
71
72}  // namespace android
73
74#endif // ANDROID_ICRYPTO_H_
75