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 #include "native_engine/native_engine.h"
17 #include "quickjs_native_array_buffer.h"
18
19 struct QuickJsArrayCallback {
CreateNewInstanceQuickJsArrayCallback20 static QuickJsArrayCallback* CreateNewInstance() { return new QuickJsArrayCallback(); }
21 NativeEngine* engine = nullptr;
22 NativeFinalize cb = nullptr;
23 void* hint = nullptr;
24 };
25
QuickJSNativeArrayBuffer(QuickJSNativeEngine * engine,JSValue value)26 QuickJSNativeArrayBuffer::QuickJSNativeArrayBuffer(QuickJSNativeEngine* engine, JSValue value)
27 : QuickJSNativeObject(engine, value)
28 {
29 }
30
QuickJSNativeArrayBuffer(QuickJSNativeEngine * engine,uint8_t ** data,size_t length)31 QuickJSNativeArrayBuffer::QuickJSNativeArrayBuffer(QuickJSNativeEngine* engine, uint8_t** data, size_t length)
32 : QuickJSNativeArrayBuffer(engine, JS_NULL)
33 {
34 size_t size = 0;
35 value_ = JS_NewArrayBufferCopy(engine_->GetContext(), nullptr, length);
36 *data = JS_GetArrayBuffer(engine_->GetContext(), &size, value_);
37 }
38
QuickJSNativeArrayBuffer(QuickJSNativeEngine * engine,uint8_t * data,size_t length,NativeFinalize cb,void * hint)39 QuickJSNativeArrayBuffer::QuickJSNativeArrayBuffer(QuickJSNativeEngine* engine,
40 uint8_t* data,
41 size_t length,
42 NativeFinalize cb,
43 void* hint)
44 : QuickJSNativeObject(engine, JS_NULL)
45 {
46 auto cbinfo = QuickJsArrayCallback::CreateNewInstance();
47 if (cbinfo != nullptr) {
48 cbinfo->engine = engine_;
49 cbinfo->cb = cb;
50 cbinfo->hint = hint;
51 }
52 value_ = JS_NewArrayBuffer(
53 engine_->GetContext(), data, length,
54 [](JSRuntime* rt, void* opaque, void* ptr) -> void {
55 auto cbinfo = reinterpret_cast<QuickJsArrayCallback*>(opaque);
56 if (cbinfo != nullptr) {
57 cbinfo->cb(cbinfo->engine, ptr, cbinfo->hint);
58 delete cbinfo;
59 }
60 },
61 (void*)cbinfo, false);
62 }
63
~QuickJSNativeArrayBuffer()64 QuickJSNativeArrayBuffer::~QuickJSNativeArrayBuffer() {}
65
GetInterface(int interfaceId)66 void* QuickJSNativeArrayBuffer::GetInterface(int interfaceId)
67 {
68 return (NativeArrayBuffer::INTERFACE_ID == interfaceId) ? (NativeArrayBuffer*)this
69 : QuickJSNativeObject::GetInterface(interfaceId);
70 }
71
GetBuffer()72 void* QuickJSNativeArrayBuffer::GetBuffer()
73 {
74 void* buffer = nullptr;
75 size_t bufferSize = 0;
76 buffer = JS_GetArrayBuffer(engine_->GetContext(), &bufferSize, value_);
77 return buffer;
78 }
79
GetLength()80 size_t QuickJSNativeArrayBuffer::GetLength()
81 {
82 size_t bufferSize = 0;
83 JS_GetArrayBuffer(engine_->GetContext(), &bufferSize, value_);
84 return bufferSize;
85 }
86
IsDetachedArrayBuffer()87 bool QuickJSNativeArrayBuffer::IsDetachedArrayBuffer()
88 {
89 void* buffer = nullptr;
90 size_t bufferSize = 0;
91 buffer = JS_GetArrayBuffer(engine_->GetContext(), &bufferSize, value_);
92 return (buffer == nullptr);
93 }
94
DetachArrayBuffer()95 bool QuickJSNativeArrayBuffer::DetachArrayBuffer()
96 {
97 if (!IsDetachedArrayBuffer()) {
98 JS_DetachArrayBuffer(engine_->GetContext(), value_);
99 return true;
100 } else {
101 return false;
102 }
103 }
104