1 /*
2  * Copyright (c) 2022 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #include "demo_proxy.h"
17 
18 #include "iremote_object.h"
19 #include "message_option.h"
20 #include "message_parcel.h"
21 
22 namespace OHOS {
23 namespace {
24     const int DEFAULT_INT_RET = -1;
25 }
26 
AddVolume(int volume)27 int DemoProxy::AddVolume(int volume)
28 {
29     auto remote = Remote();
30     if (remote == nullptr) {
31         return DEFAULT_INT_RET;
32     }
33     MessageParcel data;
34     data.WriteInt32(volume);
35     MessageParcel reply;
36     MessageOption option;
37     remote->SendRequest(ADD_VOLUME, data, reply, option);
38 
39     int32_t result = reply.ReadInt32();
40     return result;
41 }
42 }
43