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_DAUDIO_HDF_CALLBACK_H
17 #define HDF_I_DAUDIO_HDF_CALLBACK_H
18 
19 #include <string>
20 #include "types.h"
21 
22 namespace OHOS {
23 namespace DistributedHardware {
24 class IDAudioHDFCallback {
25 public:
26     virtual int32_t OpenDevice(int32_t devId, int32_t dhId) = 0;
27     virtual int32_t CloseDevice(int32_t devId, int32_t dhId = 0;
28     virtual int32_t SetParameters(int32_t devId, int32_t dhId, struct AudioParameter &param) = 0;
29     virtual int32_t NotifyEvent(int32_t devId, int32_t dhId, struct DAudioEvent &event) = 0;
30     virtual int32_t WriteStreamData(int32_t devId, int32_t dhId, struct AudioStreamData &data) = 0;
31     virtual struct AudioStreamData* ReadStreamData(int32_t devId, int32_t dhId) = 0;
32     virtual int32_t ReadMmapPosition(int32_t devId, int32_t dhId,
33         uint64_t &frames, struct CurrentTime &time) = 0;
34     virtual int32_t RefreshAshmemInfo(int32_t devId, int32_t dhId,
35         int32_t fd, int32_t ashmemLength, int32_t lengthPerTrans) = 0;
36 } // namespace DistributedHardware
37 } // namespace OHOS
38 } // HDF_I_DAUDIO_HDF_CALLBACK_H
39 #endif