1 /*
2  * Copyright 2020 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef MEGA_COMMON_OBOESTREAM_H
18 #define MEGA_COMMON_OBOESTREAM_H
19 
20 #include <cstdint>
21 #include <mutex>
22 
23 #include <StreamBase.h>
24 
25 class OboeStream: public StreamBase {
26 public:
27     static Result OboeErrorToMegaAudioError(oboe::Result oboeError);
28 
29     virtual Result teardownStream() override;
30 
31     virtual Result startStream() override;
32     virtual Result stopStream() override;
33 
34     StreamBase::Result getTimeStamp(oboe::FrameTimestamp* timeStamp);
35 
36 protected:
OboeStream(int32_t subtype)37     OboeStream(int32_t subtype) : mSubtype(subtype), mStreamStarted(false) {}
38 
39     // determine native back-end to use.
40     // either SUB_TYPE_OBOE_DEFAULT, SUB_TYPE_OBOE_AAUDIO or SUB_TYPE_OBOE_OPENSL_ES
41     int32_t mSubtype;
42 
43     // Oboe Audio Stream
44     std::shared_ptr<oboe::AudioStream>  mAudioStream;
45     bool    mStreamStarted;
46 
47     std::mutex mStreamLock;
48 
49     Result teardownStream_l();
50 };
51 
52 #endif //MEGA_COMMON_OBOESTREAM_H
53