1/*
2**
3** Copyright 2015, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18#include <stdint.h>
19#include <sys/types.h>
20
21#include <binder/Parcel.h>
22#include <binder/IMemory.h>
23#include <media/ICrypto.h>
24#include <media/IDrm.h>
25#include <media/IMediaDrmService.h>
26
27#include <utils/Errors.h>  // for status_t
28#include <utils/String8.h>
29
30namespace android {
31
32enum {
33    MAKE_CRYPTO = IBinder::FIRST_CALL_TRANSACTION,
34    MAKE_DRM,
35};
36
37class BpMediaDrmService: public BpInterface<IMediaDrmService>
38{
39public:
40    explicit BpMediaDrmService(const sp<IBinder>& impl)
41        : BpInterface<IMediaDrmService>(impl)
42    {
43    }
44
45    virtual sp<ICrypto> makeCrypto() {
46        Parcel data, reply;
47        data.writeInterfaceToken(IMediaDrmService::getInterfaceDescriptor());
48        remote()->transact(MAKE_CRYPTO, data, &reply);
49        return interface_cast<ICrypto>(reply.readStrongBinder());
50    }
51
52    virtual sp<IDrm> makeDrm() {
53        Parcel data, reply;
54        data.writeInterfaceToken(IMediaDrmService::getInterfaceDescriptor());
55        remote()->transact(MAKE_DRM, data, &reply);
56        return interface_cast<IDrm>(reply.readStrongBinder());
57    }
58
59};
60
61IMPLEMENT_META_INTERFACE(MediaDrmService, "android.media.IMediaDrmService");
62
63// ----------------------------------------------------------------------
64
65status_t BnMediaDrmService::onTransact(
66    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
67{
68    switch (code) {
69        case MAKE_CRYPTO: {
70            CHECK_INTERFACE(IMediaDrmService, data, reply);
71            sp<ICrypto> crypto = makeCrypto();
72            reply->writeStrongBinder(IInterface::asBinder(crypto));
73            return NO_ERROR;
74        } break;
75        case MAKE_DRM: {
76            CHECK_INTERFACE(IMediaDrmService, data, reply);
77            sp<IDrm> drm = makeDrm();
78            reply->writeStrongBinder(IInterface::asBinder(drm));
79            return NO_ERROR;
80        } break;
81        default:
82            return BBinder::onTransact(code, data, reply, flags);
83    }
84}
85
86// ----------------------------------------------------------------------------
87
88} // namespace android
89