IAudioRecord.cpp revision 0ec23ce0d1ff79566c402bc30df3074f6e25a22b 
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(int /*AudioSystem::sync_event_t*/ event, int triggerSession)
46    {
47        Parcel data, reply;
48        data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
49        data.writeInt32(event);
50        data.writeInt32(triggerSession);
51        status_t status = remote()->transact(START, data, &reply);
52        if (status == NO_ERROR) {
53            status = reply.readInt32();
54        } else {
55            ALOGW("start() error: %s", strerror(-status));
56        }
57        return status;
58    }
59
60    virtual void stop()
61    {
62        Parcel data, reply;
63        data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
64        remote()->transact(STOP, data, &reply);
65    }
66
67    virtual sp<IMemory> getCblk() const
68    {
69        Parcel data, reply;
70        sp<IMemory> cblk;
71        data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
72        status_t status = remote()->transact(GET_CBLK, data, &reply);
73        if (status == NO_ERROR) {
74            cblk = interface_cast<IMemory>(reply.readStrongBinder());
75        }
76        return cblk;
77    }
78};
79
80IMPLEMENT_META_INTERFACE(AudioRecord, "android.media.IAudioRecord");
81
82// ----------------------------------------------------------------------
83
84status_t BnAudioRecord::onTransact(
85    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
86{
87    switch (code) {
88        case GET_CBLK: {
89            CHECK_INTERFACE(IAudioRecord, data, reply);
90            reply->writeStrongBinder(getCblk()->asBinder());
91            return NO_ERROR;
92        } break;
93        case START: {
94            CHECK_INTERFACE(IAudioRecord, data, reply);
95            int /*AudioSystem::sync_event_t*/ event = data.readInt32();
96            int triggerSession = data.readInt32();
97            reply->writeInt32(start(event, triggerSession));
98            return NO_ERROR;
99        } break;
100        case STOP: {
101            CHECK_INTERFACE(IAudioRecord, data, reply);
102            stop();
103            return NO_ERROR;
104        } break;
105        default:
106            return BBinder::onTransact(code, data, reply, flags);
107    }
108}
109
110}; // namespace android
111