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 #ifndef HDF_I_AUDIO_VOLUME_H
17 #define HDF_I_AUDIO_VOLUME_H
18 
19 namespace OHOS {
20 namespace DistributedHardware {
21 class IAudioVolume {
22 public:
23     virtual int32_t SetMute(const bool mute) = 0;
24 
25     virtual int32_t GetMute(bool &mute) = 0;
26 
27     virtual int32_t SetVolume(const float volume) = 0;
28 
29     virtual int32_t GetVolume(float &volume) = 0;
30 
31     virtual int32_t GetGainThreshold(float &min, float &max) = 0;
32 
33     virtual int32_t SetGain(const float gain) = 0;
34 
35     virtual int32_t GetGain(float &gain) = 0;
36 };
37 } // namespace DistributedHardware
38 } // namespace OHOS
39 #endif // HDF_I_AUDIO_VOLUME_H