IAudioRecord.cpp revision 7562408b2261d38415453378b6188f74fda99d88 
1/*
2**
3** Copyright 2007, 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
23#include <media/IAudioRecord.h>
24
25namespace android {
26
27enum {
28    GET_CBLK = IBinder::FIRST_CALL_TRANSACTION,
29    START,
30    STOP
31};
32
33class BpAudioRecord : public BpInterface<IAudioRecord>
34{
35public:
36    BpAudioRecord(const sp<IBinder>& impl)
37        : BpInterface<IAudioRecord>(impl)
38    {
39    }
40
41    virtual status_t start()
42    {
43        Parcel data, reply;
44        data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
45        remote()->transact(START, data, &reply);
46        return reply.readInt32();
47    }
48
49    virtual void stop()
50    {
51        Parcel data, reply;
52        data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
53        remote()->transact(STOP, data, &reply);
54    }
55
56    virtual sp<IMemory> getCblk() const
57    {
58        Parcel data, reply;
59        data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
60        remote()->transact(GET_CBLK, data, &reply);
61        return interface_cast<IMemory>(reply.readStrongBinder());
62    }
63};
64
65IMPLEMENT_META_INTERFACE(AudioRecord, "android.media.IAudioRecord");
66
67// ----------------------------------------------------------------------
68
69#define CHECK_INTERFACE(interface, data, reply) \
70        do { if (!data.enforceInterface(interface::getInterfaceDescriptor())) { \
71            LOGW("Call incorrectly routed to " #interface); \
72            return PERMISSION_DENIED; \
73        } } while (0)
74
75status_t BnAudioRecord::onTransact(
76    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
77{
78    switch(code) {
79       case GET_CBLK: {
80            CHECK_INTERFACE(IAudioRecord, data, reply);
81            reply->writeStrongBinder(getCblk()->asBinder());
82            return NO_ERROR;
83        } break;
84        case START: {
85            CHECK_INTERFACE(IAudioRecord, data, reply);
86            reply->writeInt32(start());
87            return NO_ERROR;
88        } break;
89        case STOP: {
90            CHECK_INTERFACE(IAudioRecord, data, reply);
91            stop();
92            return NO_ERROR;
93        } break;
94        default:
95            return BBinder::onTransact(code, data, reply, flags);
96    }
97}
98
99}; // namespace android
100
101