IAudioRecord.cpp revision 34f1d8ecd23169a5f299937e3aaf1bd7937578a0 
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#define LOG_TAG "IAudioRecord"
19//#define LOG_NDEBUG 0
20#include <utils/Log.h>
21
22#include <stdint.h>
23#include <sys/types.h>
24
25#include <binder/Parcel.h>
26
27#include <media/IAudioRecord.h>
28
29namespace android {
30
31enum {
32    GET_CBLK = IBinder::FIRST_CALL_TRANSACTION,
33    START,
34    STOP
35};
36
37class BpAudioRecord : public BpInterface<IAudioRecord>
38{
39public:
40    BpAudioRecord(const sp<IBinder>& impl)
41        : BpInterface<IAudioRecord>(impl)
42    {
43    }
44
45    virtual status_t start()
46    {
47        Parcel data, reply;
48        data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
49        status_t status = remote()->transact(START, data, &reply);
50        if (status == NO_ERROR) {
51            status = reply.readInt32();
52        } else {
53            LOGW("start() error: %s", strerror(-status));
54        }
55        return status;
56    }
57
58    virtual void stop()
59    {
60        Parcel data, reply;
61        data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
62        remote()->transact(STOP, data, &reply);
63    }
64
65    virtual sp<IMemory> getCblk() const
66    {
67        Parcel data, reply;
68        sp<IMemory> cblk;
69        data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
70        status_t status = remote()->transact(GET_CBLK, data, &reply);
71        if (status == NO_ERROR) {
72            cblk = interface_cast<IMemory>(reply.readStrongBinder());
73        }
74        return cblk;
75    }
76};
77
78IMPLEMENT_META_INTERFACE(AudioRecord, "android.media.IAudioRecord");
79
80// ----------------------------------------------------------------------
81
82status_t BnAudioRecord::onTransact(
83    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
84{
85    switch(code) {
86       case GET_CBLK: {
87            CHECK_INTERFACE(IAudioRecord, data, reply);
88            reply->writeStrongBinder(getCblk()->asBinder());
89            return NO_ERROR;
90        } break;
91        case START: {
92            CHECK_INTERFACE(IAudioRecord, data, reply);
93            reply->writeInt32(start());
94            return NO_ERROR;
95        } break;
96        case STOP: {
97            CHECK_INTERFACE(IAudioRecord, data, reply);
98            stop();
99            return NO_ERROR;
100        } break;
101        default:
102            return BBinder::onTransact(code, data, reply, flags);
103    }
104}
105
106}; // namespace android
107
108