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1 /*
2  * Copyright (c) 2023 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 NAPI_AUDIO_CAPTURER_READ_DATA_CALLBACK_H
17 #define NAPI_AUDIO_CAPTURER_READ_DATA_CALLBACK_H
18 
19 #include "napi/native_api.h"
20 #include "napi/native_node_api.h"
21 #include "napi_audio_capturer.h"
22 #include "napi_audio_capturer_callbacks.h"
23 
24 namespace OHOS {
25 namespace AudioStandard {
26 class NapiCapturerReadDataCallback : public AudioCapturerReadCallback {
27 public:
28     NapiCapturerReadDataCallback(napi_env env, NapiAudioCapturer *napiCapturer);
29     virtual ~NapiCapturerReadDataCallback();
30     void OnReadData(size_t length) override;
31 
32     void AddCallbackReference(const std::string &callbackName, napi_value args);
33     void RemoveCallbackReference(napi_env env, napi_value callback);
34     void RemoveNapiCapturer();
35     void CreateReadDataTsfn(napi_env env);
36 
37 private:
38     struct CapturerReadDataJsCallback {
39         std::shared_ptr<AutoRef> callback = nullptr;
40         std::string callbackName = "unknown";
41         BufferDesc bufDesc {};
42         NapiAudioCapturer *capturerNapiObj;
43         NapiCapturerReadDataCallback *readDataCallbackPtr;
44     };
45 
46     static void CaptureReadDataTsfnFinalize(napi_env env, void *data, void *hint);
47     static void SafeJsCallbackCapturerReadDataWork(napi_env env, napi_value js_cb, void *context, void *data);
48     static void SafeJsCallbackCapturerReadDataWorkInner(CapturerReadDataJsCallback *event);
49     void OnJsCapturerReadDataCallback(std::unique_ptr<CapturerReadDataJsCallback> &jsCb);
50 
51     std::mutex mutex_;
52     napi_env env_ = nullptr;
53     std::shared_ptr<AutoRef> capturerReadDataCallback_ = nullptr;
54     NapiAudioCapturer *napiCapturer_;
55     bool isCallbackInited_ = false;
56     bool regAcReadDataTsfn_ = false;
57     napi_threadsafe_function acReadDataTsfn_ = nullptr;
58 };
59 }  // namespace AudioStandard
60 }  // namespace OHOS
61 #endif // NAPI_AUDIO_CAPTURER_READ_DATA_CALLBACK_H