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