1 /*
2 * Copyright (c) 2025 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 #ifndef LOG_TAG
16 #define LOG_TAG "NapiAudioLoopbackCallback"
17 #endif
18
19 #include "js_native_api.h"
20 #include "napi_audio_loopback_callback.h"
21 #include "napi_param_utils.h"
22 #include "napi_audio_error.h"
23
24 namespace OHOS {
25 namespace AudioStandard {
26
NapiAudioLoopbackCallback(napi_env env)27 NapiAudioLoopbackCallback::NapiAudioLoopbackCallback(napi_env env)
28 : env_(env)
29 {
30 AUDIO_DEBUG_LOG("instance create");
31 }
32
~NapiAudioLoopbackCallback()33 NapiAudioLoopbackCallback::~NapiAudioLoopbackCallback()
34 {
35 if (regArStatusChgTsfn_) {
36 napi_release_threadsafe_function(arStatusChgTsfn_, napi_tsfn_abort);
37 }
38 AUDIO_DEBUG_LOG("instance destroy");
39 }
40
OnStatusChange(const AudioLoopbackStatus status,const StateChangeCmdType cmdType)41 void NapiAudioLoopbackCallback::OnStatusChange(const AudioLoopbackStatus status,
42 const StateChangeCmdType __attribute__((unused)) cmdType)
43 {
44 std::lock_guard<std::mutex> lock(mutex_);
45 AUDIO_DEBUG_LOG("OnStatusChange is called, status: %{public}d", status);
46 CHECK_AND_RETURN_LOG(statusChangeCallback_ != nullptr, "Cannot find the reference of statusChange callback");
47
48 std::unique_ptr<AudioLoopbackJsCallback> cb = std::make_unique<AudioLoopbackJsCallback>();
49 CHECK_AND_RETURN_LOG(cb != nullptr, "No memory");
50 cb->callback = statusChangeCallback_;
51 cb->callbackName = STATUS_CHANGE_CALLBACK_NAME;
52 cb->status = status;
53 return OnJsCallbackStatusChange(cb);
54 }
55
SaveCallbackReference(const std::string & callbackName,napi_value args)56 void NapiAudioLoopbackCallback::SaveCallbackReference(const std::string &callbackName, napi_value args)
57 {
58 std::lock_guard<std::mutex> lock(mutex_);
59 // create function that will operate while save callback reference success.
60 std::function<void(std::shared_ptr<AutoRef> generatedCallback)> successed =
61 [this, callbackName](std::shared_ptr<AutoRef> generatedCallback) {
62 if (callbackName == STATUS_CHANGE_CALLBACK_NAME) {
63 statusChangeCallback_ = generatedCallback;
64 return;
65 }
66 };
67 SaveCallbackReferenceInner(callbackName, args, successed);
68 }
69
RemoveCallbackReference(const std::string & callbackName,napi_env env,napi_value callback,napi_value args)70 void NapiAudioLoopbackCallback::RemoveCallbackReference(const std::string &callbackName, napi_env env,
71 napi_value callback, napi_value args)
72 {
73 std::lock_guard<std::mutex> lock(mutex_);
74 // create function that will operate while save callback reference success.
75 std::function<void()> successed = [this, callbackName]() {
76 if (callbackName == STATUS_CHANGE_CALLBACK_NAME) {
77 statusChangeCallback_ = nullptr;
78 return;
79 }
80 };
81 RemoveCallbackReferenceInner(callbackName, env, callback, successed);
82 }
83
GetCallback(const std::string & callbackName)84 std::shared_ptr<AutoRef> NapiAudioLoopbackCallback::GetCallback(const std::string &callbackName)
85 {
86 std::shared_ptr<AutoRef> cb = nullptr;
87 if (callbackName == STATUS_CHANGE_CALLBACK_NAME) {
88 return statusChangeCallback_;
89 }
90 AUDIO_ERR_LOG("NapiAudioLoopbackCallback->GetCallback Unknown callback type: %{public}s", callbackName.c_str());
91 return cb;
92 }
93
CreateArStatusChange(napi_env env)94 void NapiAudioLoopbackCallback::CreateArStatusChange(napi_env env)
95 {
96 regArStatusChgTsfn_ = true;
97 napi_value cbName;
98 std::string callbackName = "statusChange";
99 napi_create_string_utf8(env_, callbackName.c_str(), callbackName.length(), &cbName);
100 napi_create_threadsafe_function(env, nullptr, nullptr, cbName, 0, 1, nullptr,
101 StatusChangeTsfnFinalize, nullptr, SafeJsCallbackStatusChangeWork, &arStatusChgTsfn_);
102 }
103
GetArStatusChangeTsfnFlag()104 bool NapiAudioLoopbackCallback::GetArStatusChangeTsfnFlag()
105 {
106 return regArStatusChgTsfn_;
107 }
108
GetEnv()109 napi_env &NapiAudioLoopbackCallback::GetEnv()
110 {
111 return env_;
112 }
113
CheckIfTargetCallbackName(const std::string & callbackName)114 bool NapiAudioLoopbackCallback::CheckIfTargetCallbackName(const std::string &callbackName)
115 {
116 if (callbackName == STATUS_CHANGE_CALLBACK_NAME) {
117 return true;
118 }
119 return false;
120 }
121
SafeJsCallbackStatusChangeWork(napi_env env,napi_value js_cb,void * context,void * data)122 void NapiAudioLoopbackCallback::SafeJsCallbackStatusChangeWork(napi_env env, napi_value js_cb, void *context,
123 void *data)
124 {
125 AudioLoopbackJsCallback *event = reinterpret_cast<AudioLoopbackJsCallback *>(data);
126 CHECK_AND_RETURN_LOG((event != nullptr) && (event->callback != nullptr),
127 "OnJsCallbackStatusChange: no memory");
128 std::shared_ptr<AudioLoopbackJsCallback> safeContext(
129 static_cast<AudioLoopbackJsCallback*>(data),
130 [](AudioLoopbackJsCallback *ptr) {
131 delete ptr;
132 });
133 std::string request = event->callbackName;
134 napi_ref callback = event->callback->cb_;
135 napi_handle_scope scope = nullptr;
136 napi_open_handle_scope(env, &scope);
137 CHECK_AND_RETURN_LOG(scope != nullptr, "scope is nullptr");
138 AUDIO_INFO_LOG("SafeJsCallbackStatusChangeWork: safe js callback working.");
139
140 do {
141 napi_value jsCallback = nullptr;
142 napi_status nstatus = napi_get_reference_value(env, callback, &jsCallback);
143 CHECK_AND_BREAK_LOG(nstatus == napi_ok && jsCallback != nullptr, "%{public}s get reference value fail",
144 request.c_str());
145
146 // Call back function
147 napi_value args[1] = { nullptr };
148 nstatus = NapiParamUtils::SetValueInt32(env, event->status, args[0]);
149 CHECK_AND_BREAK_LOG(nstatus == napi_ok && args[PARAM0] != nullptr,
150 "%{public}s fail to create StatusChange callback", request.c_str());
151
152 const size_t argCount = 1;
153 napi_value result = nullptr;
154 nstatus = napi_call_function(env, nullptr, jsCallback, argCount, args, &result);
155 CHECK_AND_BREAK_LOG(nstatus == napi_ok, "%{public}s fail to call StatusChange callback", request.c_str());
156 } while (0);
157 napi_close_handle_scope(env, scope);
158 }
159
StatusChangeTsfnFinalize(napi_env env,void * data,void * hint)160 void NapiAudioLoopbackCallback::StatusChangeTsfnFinalize(napi_env env, void *data, void *hint)
161 {
162 AUDIO_INFO_LOG("StatusChangeTsfnFinalize: safe thread resource release.");
163 }
164
OnJsCallbackStatusChange(std::unique_ptr<AudioLoopbackJsCallback> & jsCb)165 void NapiAudioLoopbackCallback::OnJsCallbackStatusChange(std::unique_ptr<AudioLoopbackJsCallback> &jsCb)
166 {
167 if (jsCb.get() == nullptr) {
168 AUDIO_ERR_LOG("OnJsCallbackStatusChange: jsCb.get() is null");
169 return;
170 }
171
172 AudioLoopbackJsCallback *event = jsCb.release();
173 CHECK_AND_RETURN_LOG((event != nullptr) && (event->callback != nullptr), "event is nullptr.");
174
175 napi_acquire_threadsafe_function(arStatusChgTsfn_);
176 napi_call_threadsafe_function(arStatusChgTsfn_, event, napi_tsfn_blocking);
177 }
178 } // namespace AudioStandard
179 } // namespace OHOS