1 /*
2  * Copyright (c) 2020-2021 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 FRAMEWORKS_AUDIO_CAPTURER_IMPL_H
17 #define FRAMEWORKS_AUDIO_CAPTURER_IMPL_H
18 
19 #include <mutex>
20 #include <sys/time.h>
21 
22 #include "audio_capturer.h"
23 
24 namespace OHOS {
25 namespace Audio {
26 enum AudioChannel {
27     AUDIO_CHANNEL_IN_MONO   = 1, /* mono */
28     AUDIO_CHANNEL_IN_STEREO = 2, /* stereo */
29     AUDIO_CHANNEL_BUTT
30 };
31 
32 class AudioSource;
33 class AudioEncoder;
34 class AudioCapturerImpl {
35 public:
36     AudioCapturerImpl();
37     virtual ~AudioCapturerImpl();
38     static bool GetMinFrameCount(int32_t sampleRate, int32_t channelCount, AudioCodecFormat audioFormat,
39                                  size_t &frameCount);
40     int32_t SetCapturerInfo(const AudioCapturerInfo info);
41     int32_t GetCapturerInfo(AudioCapturerInfo &info);
42     bool Record();
43     bool Stop();
44     bool Release();
45     int32_t Read(uint8_t *buffer, size_t userSize, bool isBlockingRead);
46     uint64_t GetFrameCount();
47     State GetStatus();
48     bool GetTimestamp(Timestamp &timestamp, Timestamp::Timebase base);
49 
50 private:
51     bool StopInternal();
52 
53     std::unique_ptr<AudioSource> audioSource_;
54     std::unique_ptr<AudioEncoder> audioEncoder_;
55     State status_ = INITIALIZED;
56     AudioCapturerInfo info_;
57     Timestamp timestamp_;
58     int32_t inputDeviceId_ = 0;
59     std::mutex mutex_;
60 };
61 }  // namespace Audio
62 }  // namespace OHOS
63 #endif  // FRAMEWORKS_AUDIO_CAPTURER_IMPL_H
64