mirror of
https://github.com/ZDoom/gzdoom-gles.git
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84cc7cbdd2
This is to improve compile times because the MSVC compiler tends to become slow with large lists of source files in a single project. This new project is still our stripped down copy of libadl, not the original, because that project contains a large amount of baggage we do not need.
217 lines
4.7 KiB
C++
217 lines
4.7 KiB
C++
/*
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* libADLMIDI is a free MIDI to WAV conversion library with OPL3 emulation
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*
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* Original ADLMIDI code: Copyright (c) 2010-2014 Joel Yliluoma <bisqwit@iki.fi>
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* ADLMIDI Library API: Copyright (c) 2015-2018 Vitaly Novichkov <admin@wohlnet.ru>
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*
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* Library is based on the ADLMIDI, a MIDI player for Linux and Windows with OPL3 emulation:
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* http://iki.fi/bisqwit/source/adlmidi.html
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ADLMIDI_PTR_HPP_THING
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#define ADLMIDI_PTR_HPP_THING
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#include <algorithm> // swap
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#include <stddef.h>
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#include <stdlib.h>
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/*
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Generic deleters for smart pointers
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*/
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template <class T>
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struct ADLMIDI_DefaultDelete
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{
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void operator()(T *x) { delete x; }
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};
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template <class T>
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struct ADLMIDI_DefaultArrayDelete
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{
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void operator()(T *x) { delete[] x; }
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};
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struct ADLMIDI_CDelete
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{
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void operator()(void *x) { free(x); }
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};
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/*
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Safe unique pointer for C++98, non-copyable but swappable.
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*/
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template< class T, class Deleter = ADLMIDI_DefaultDelete<T> >
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class AdlMIDI_UPtr
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{
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T *m_p;
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public:
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explicit AdlMIDI_UPtr(T *p)
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: m_p(p) {}
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~AdlMIDI_UPtr()
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{
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reset();
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}
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void reset(T *p = NULL)
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{
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if(p != m_p) {
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if(m_p) {
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Deleter del;
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del(m_p);
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}
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m_p = p;
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}
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}
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void swap(AdlMIDI_UPtr &other)
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{
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std::swap(m_p, other.m_p);
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}
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T *get() const
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{
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return m_p;
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}
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T &operator*() const
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{
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return *m_p;
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}
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T *operator->() const
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{
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return m_p;
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}
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T &operator[](size_t index) const
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{
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return m_p[index];
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}
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private:
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AdlMIDI_UPtr(const AdlMIDI_UPtr &);
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AdlMIDI_UPtr &operator=(const AdlMIDI_UPtr &);
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};
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template <class T>
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void swap(AdlMIDI_UPtr<T> &a, AdlMIDI_UPtr<T> &b)
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{
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a.swap(b);
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}
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/**
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Unique pointer for arrays.
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*/
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template<class T>
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class AdlMIDI_UPtrArray :
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public AdlMIDI_UPtr< T, ADLMIDI_DefaultArrayDelete<T> >
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{
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public:
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explicit AdlMIDI_UPtrArray(T *p = NULL)
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: AdlMIDI_UPtr< T, ADLMIDI_DefaultArrayDelete<T> >(p) {}
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};
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/**
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Unique pointer for C memory.
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*/
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template<class T>
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class AdlMIDI_CPtr :
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public AdlMIDI_UPtr< T, ADLMIDI_CDelete >
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{
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public:
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explicit AdlMIDI_CPtr(T *p = NULL)
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: AdlMIDI_UPtr< T, ADLMIDI_CDelete >(p) {}
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};
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/*
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Shared pointer with non-atomic counter
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FAQ: Why not std::shared_ptr? Because of Android NDK now doesn't supports it
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*/
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template< class T, class Deleter = ADLMIDI_DefaultDelete<T> >
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class AdlMIDI_SPtr
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{
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T *m_p;
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size_t *m_counter;
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public:
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explicit AdlMIDI_SPtr(T *p = NULL)
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: m_p(p), m_counter(p ? new size_t(1) : NULL) {}
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~AdlMIDI_SPtr()
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{
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reset(NULL);
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}
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AdlMIDI_SPtr(const AdlMIDI_SPtr &other)
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: m_p(other.m_p), m_counter(other.m_counter)
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{
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if(m_counter)
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++*m_counter;
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}
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AdlMIDI_SPtr &operator=(const AdlMIDI_SPtr &other)
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{
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if(this == &other)
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return *this;
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reset();
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m_p = other.m_p;
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m_counter = other.m_counter;
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if(m_counter)
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++*m_counter;
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return *this;
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}
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void reset(T *p = NULL)
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{
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if(p != m_p) {
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if(m_p && --*m_counter == 0) {
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Deleter del;
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del(m_p);
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if(!p) {
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delete m_counter;
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m_counter = NULL;
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}
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}
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m_p = p;
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if(p) {
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if(!m_counter)
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m_counter = new size_t;
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*m_counter = 1;
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}
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}
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}
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T *get() const
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{
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return m_p;
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}
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T &operator*() const
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{
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return *m_p;
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}
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T *operator->() const
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{
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return m_p;
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}
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T &operator[](size_t index) const
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{
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return m_p[index];
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}
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};
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/**
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Shared pointer for arrays.
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*/
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template<class T>
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class AdlMIDI_SPtrArray :
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public AdlMIDI_SPtr< T, ADLMIDI_DefaultArrayDelete<T> >
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{
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public:
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explicit AdlMIDI_SPtrArray(T *p = NULL)
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: AdlMIDI_SPtr< T, ADLMIDI_DefaultArrayDelete<T> >(p) {}
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};
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#endif //ADLMIDI_PTR_HPP_THING
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