mirror of
https://github.com/42wim/matterbridge.git
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122 lines
4.2 KiB
C
122 lines
4.2 KiB
C
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/*
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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
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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 THE
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* SOFTWARE.
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*/
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#ifndef VRLE_H
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#define VRLE_H
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#include <vector>
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#include "vector_vcowptr.h"
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#include "vector_vglobal.h"
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#include "vector_vpoint.h"
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#include "vector_vrect.h"
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V_BEGIN_NAMESPACE
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class VRle {
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public:
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struct Span {
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short x{0};
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short y{0};
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ushort len{0};
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uchar coverage{0};
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};
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using VRleSpanCb = void (*)(size_t count, const VRle::Span *spans,
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void *userData);
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bool empty() const { return d->empty(); }
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VRect boundingRect() const { return d->bbox(); }
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void setBoundingRect(const VRect &bbox) { d->setBbox(bbox); }
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void addSpan(const VRle::Span *span, size_t count)
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{
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d.write().addSpan(span, count);
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}
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void reset() { d.write().reset(); }
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void translate(const VPoint &p) { d.write().translate(p); }
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void operator*=(uchar alpha) { d.write() *= alpha; }
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void intersect(const VRect &r, VRleSpanCb cb, void *userData) const;
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void intersect(const VRle &rle, VRleSpanCb cb, void *userData) const;
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void operator&=(const VRle &o);
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VRle operator&(const VRle &o) const;
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VRle operator-(const VRle &o) const;
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VRle operator+(const VRle &o) const { return opGeneric(o, Data::Op::Add); }
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VRle operator^(const VRle &o) const { return opGeneric(o, Data::Op::Xor); }
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friend VRle operator-(const VRect &rect, const VRle &o);
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friend VRle operator&(const VRect &rect, const VRle &o);
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bool unique() const { return d.unique(); }
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size_t refCount() const { return d.refCount(); }
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void clone(const VRle &o) { d.write().clone(o.d.read()); }
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public:
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struct View {
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Span * _data;
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size_t _size;
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View(const Span *data, size_t sz) : _data((Span *)data), _size(sz) {}
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Span * data() { return _data; }
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size_t size() { return _size; }
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};
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struct Data {
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enum class Op { Add, Xor, Substract };
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VRle::View view() const
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{
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return VRle::View(mSpans.data(), mSpans.size());
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}
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bool empty() const { return mSpans.empty(); }
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void addSpan(const VRle::Span *span, size_t count);
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void updateBbox() const;
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VRect bbox() const;
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void setBbox(const VRect &bbox) const;
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void reset();
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void translate(const VPoint &p);
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void operator*=(uchar alpha);
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void opGeneric(const VRle::Data &, const VRle::Data &, Op code);
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void opSubstract(const VRle::Data &, const VRle::Data &);
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void opIntersect(VRle::View a, VRle::View b);
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void opIntersect(const VRect &, VRle::VRleSpanCb, void *) const;
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void addRect(const VRect &rect);
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void clone(const VRle::Data &);
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std::vector<VRle::Span> mSpans;
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VPoint mOffset;
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mutable VRect mBbox;
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mutable bool mBboxDirty = true;
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};
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private:
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VRle opGeneric(const VRle &o, Data::Op opcode) const;
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vcow_ptr<Data> d;
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};
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inline void VRle::intersect(const VRect &r, VRleSpanCb cb, void *userData) const
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{
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d->opIntersect(r, cb, userData);
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}
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V_END_NAMESPACE
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#endif // VRLE_H
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