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116 lines
3.9 KiB
116 lines
3.9 KiB
/****************************************************************************
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Copyright (c) 2021-2023 Xiamen Yaji Software Co., Ltd.
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http://www.cocos.com
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#pragma once
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#include "base/Macros.h"
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#include "base/Ptr.h"
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#include "base/RefCounted.h"
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#include "base/memory/Memory.h"
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#include "bindings/jswrapper/Object.h"
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namespace cc {
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class ArrayBuffer : public RefCounted {
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public:
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using Ptr = IntrusivePtr<ArrayBuffer>;
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explicit ArrayBuffer(uint32_t length) : _byteLength{length} {
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_jsArrayBuffer = se::Object::createArrayBufferObject(nullptr, length);
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_jsArrayBuffer->root();
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_jsArrayBuffer->getArrayBufferData(static_cast<uint8_t **>(&_data), nullptr);
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memset(_data, 0x00, _byteLength);
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}
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ArrayBuffer(const uint8_t *data, uint32_t length) {
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reset(data, length);
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}
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ArrayBuffer() = default;
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~ArrayBuffer() override {
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if (_jsArrayBuffer) {
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_jsArrayBuffer->unroot();
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_jsArrayBuffer->decRef();
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}
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}
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inline void setJSArrayBuffer(se::Object *arrayBuffer) {
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if (_jsArrayBuffer) {
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_jsArrayBuffer->unroot();
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_jsArrayBuffer->decRef();
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}
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_jsArrayBuffer = arrayBuffer;
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_jsArrayBuffer->incRef();
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_jsArrayBuffer->root();
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size_t length{0};
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_jsArrayBuffer->getArrayBufferData(static_cast<uint8_t **>(&_data), &length);
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_byteLength = static_cast<uint32_t>(length);
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}
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inline se::Object *getJSArrayBuffer() const { return _jsArrayBuffer; }
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inline uint32_t byteLength() const { return _byteLength; }
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Ptr slice(uint32_t begin) {
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return slice(begin, _byteLength);
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}
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Ptr slice(uint32_t begin, uint32_t end) {
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CC_ASSERT_GT(end, begin);
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CC_ASSERT_LT(begin, _byteLength);
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CC_ASSERT_LE(end, _byteLength);
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uint32_t newBufByteLength = (end - begin);
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Ptr buffer = ccnew ArrayBuffer(newBufByteLength);
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memcpy(buffer->getData(), _data + begin, newBufByteLength);
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return buffer;
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}
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// Just use it to copy data. Use TypedArray to get/set data.
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inline const uint8_t *getData() const { return _data; }
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inline uint8_t *getData() { return _data; }
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inline void reset(const uint8_t *data, uint32_t length) {
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if (_jsArrayBuffer != nullptr) {
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_jsArrayBuffer->unroot();
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_jsArrayBuffer->decRef();
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}
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_jsArrayBuffer = se::Object::createArrayBufferObject(data, length);
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_jsArrayBuffer->getArrayBufferData(static_cast<uint8_t **>(&_data), nullptr);
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_byteLength = length;
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}
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private:
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se::Object *_jsArrayBuffer{nullptr};
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uint8_t *_data{nullptr};
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uint32_t _byteLength{0};
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template <class T>
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friend class TypedArrayTemp;
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friend class DataView;
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CC_DISALLOW_COPY_MOVE_ASSIGN(ArrayBuffer);
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};
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} // namespace cc
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