1 /*
2  * Copyright (c) 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 AUDIO_WRAPPER_H
17 #define AUDIO_WRAPPER_H
18 
19 #include <cstdint>
20 #include <memory>
21 #include <mutex>
22 #include <unordered_map>
23 
24 #include "coder_wrapper.h"
25 #include "single_instance.h"
26 
27 namespace OHOS {
28 namespace AI {
29 class AudioWrapper {
30 DECLARE_SINGLE_INSTANCE(AudioWrapper);
31 
32 public:
33     /* Initializes audio wrapper to convert AAC to PCM. */
34     int32_t Init(ConvertType typeId, intptr_t &handler);
35 
36     /* Sets coder mode, indicate whether to CodecInit. */
37     void SetCodecMode(bool needCodec);
38 
39     /* Sets configuration of specific coder. */
40     int32_t SetConfig(intptr_t handler, const CoderConfig &config);
41 
42     /* Starts specific coder. */
43     int32_t StartCodec(intptr_t handler);
44 
45     /* Convert CoderStream from source to converted. */
46     int32_t Convert(intptr_t handler, const CoderStream &source, CoderStream &converted);
47 
48     /* Deinits specific coder. */
49     int32_t Deinit(intptr_t handler);
50 
51     /* Clears all coders. */
52     void Release();
53 
54 private:
55     void InitAudioDecoder(intptr_t &handler);
56 
57 private:
58     std::mutex mutex_;
59     std::unordered_map<intptr_t, CoderWrapper *> coders_;
60     bool hasInitCodec_ = false;
61     bool needCodec_ = true;
62 };
63 } // namespace AI
64 } // namespace OHOS
65 #endif // AUDIO_WRAPPER_H