mirror of
https://github.com/cwinfo/matterbridge.git
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53cafa9f3d
This commit adds support for go/cgo tgs conversion when building with the -tags `cgo` The default binaries are still "pure" go and uses the old way of converting. * Move lottie_convert.py conversion code to its own file * Add optional libtgsconverter * Update vendor * Apply suggestions from code review * Update bridge/helper/libtgsconverter.go Co-authored-by: Wim <wim@42.be>
127 lines
3.1 KiB
C++
127 lines
3.1 KiB
C++
/*
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* Copyright (c) 2020 Samsung Electronics Co., Ltd. All rights reserved.
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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
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* 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 THE
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* SOFTWARE.
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*/
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#ifndef VCOWPTR_H
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#define VCOWPTR_H
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#include <cassert>
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#include <atomic>
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template <typename T>
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class vcow_ptr {
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struct model {
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std::atomic<std::size_t> mRef{1};
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model() = default;
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template <class... Args>
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explicit model(Args&&... args) : mValue(std::forward<Args>(args)...){}
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explicit model(const T& other) : mValue(other){}
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T mValue;
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};
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model* mModel;
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public:
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using element_type = T;
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vcow_ptr()
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{
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static model default_s;
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mModel = &default_s;
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++mModel->mRef;
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}
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~vcow_ptr()
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{
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if (mModel && (--mModel->mRef == 0)) delete mModel;
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}
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template <class... Args>
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explicit vcow_ptr(Args&&... args) : mModel(new model(std::forward<Args>(args)...))
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{
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}
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vcow_ptr(const vcow_ptr& x) noexcept : mModel(x.mModel)
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{
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assert(mModel);
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++mModel->mRef;
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}
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vcow_ptr(vcow_ptr&& x) noexcept : mModel(x.mModel)
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{
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assert(mModel);
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x.mModel = nullptr;
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}
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auto operator=(const vcow_ptr& x) noexcept -> vcow_ptr&
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{
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*this = vcow_ptr(x);
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return *this;
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}
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auto operator=(vcow_ptr&& x) noexcept -> vcow_ptr&
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{
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auto tmp = std::move(x);
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swap(*this, tmp);
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return *this;
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}
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auto operator*() const noexcept -> const element_type& { return read(); }
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auto operator-> () const noexcept -> const element_type* { return &read(); }
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std::size_t refCount() const noexcept
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{
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assert(mModel);
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return mModel->mRef;
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}
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bool unique() const noexcept
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{
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assert(mModel);
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return mModel->mRef == 1;
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}
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auto write() -> element_type&
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{
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if (!unique()) *this = vcow_ptr(read());
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return mModel->mValue;
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}
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auto read() const noexcept -> const element_type&
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{
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assert(mModel);
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return mModel->mValue;
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}
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friend inline void swap(vcow_ptr& x, vcow_ptr& y) noexcept
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{
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std::swap(x.mModel, y.mModel);
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}
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};
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#endif // VCOWPTR_H
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