mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-11-30 21:26:51 -05:00
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
#ifndef _MEMBLOCK_H
|
|
#define _MEMBLOCK_H
|
|
|
|
//#include <bfc/wasabi_std.h>
|
|
#include <bfc/std_mem.h>
|
|
//#include <wasabicfg.h>
|
|
|
|
#ifdef _DEBUG
|
|
extern int memblocks_totalsize;
|
|
#endif
|
|
|
|
class VoidMemBlock {
|
|
protected:
|
|
VoidMemBlock(int size=0, const void *data=0);
|
|
~VoidMemBlock();
|
|
|
|
void *setSize(int newsize);
|
|
void *setMinimumSize(int newminsize, int increment=0);
|
|
void *getMemory() const { return mem; }
|
|
void setMemory(const void *data, int datalen, int offsetby=0);
|
|
int getSize() const;
|
|
|
|
int isMine(void *ptr);
|
|
|
|
void zeroMemory();
|
|
|
|
private:
|
|
void *mem;
|
|
int size;
|
|
};
|
|
|
|
// just a convenient resizeable block of memory wrapper
|
|
// doesn't handle constructors or anything, meant for int, char, etc.
|
|
template <class T>
|
|
class MemBlock : private VoidMemBlock {
|
|
public:
|
|
MemBlock(int _size = 0, const T *data = NULL) : VoidMemBlock(_size*sizeof(T), data) {}
|
|
MemBlock(const MemBlock<T> &source) : VoidMemBlock(source.getSizeInBytes(), source.getMemory()) {}
|
|
MemBlock(const MemBlock<T> *source) : VoidMemBlock(source->getSizeInBytes(), source->getMemory()) {}
|
|
|
|
T *setSize(int newsize) {
|
|
return static_cast<T*>(VoidMemBlock::setSize(newsize * sizeof(T)));
|
|
}
|
|
T *setMinimumSize(int newminsize, int increment = 0) {
|
|
return static_cast<T*>(VoidMemBlock::setMinimumSize(newminsize * sizeof(T), increment*sizeof(T)));
|
|
}
|
|
|
|
T *getMemory() const { return static_cast<T *>(VoidMemBlock::getMemory()); }
|
|
T *getMemory(int offset) const { return static_cast<T *>(VoidMemBlock::getMemory())+offset; } // note pointer arithmetic
|
|
T *m() const { return getMemory(); }
|
|
T *m(int offset) const { return getMemory(offset); }
|
|
operator T *() const { return getMemory(); }
|
|
T& operator() (unsigned int ofs) { return getMemory()[ofs]; }
|
|
const T& operator() (unsigned int ofs) const { return getMemory()[ofs]; }
|
|
|
|
void copyTo(T *dest) { MEMCPY(getMemory(), dest, getSizeInBytes()); }
|
|
|
|
int getSize() const { return VoidMemBlock::getSize()/sizeof(T); }// # of T's
|
|
int getSizeInBytes() const { return VoidMemBlock::getSize(); }
|
|
|
|
int isMine(T *ptr) { return VoidMemBlock::isMine(ptr); }
|
|
|
|
void setMemory(const T *data, int datalen, int offsetby = 0) { VoidMemBlock::setMemory(data, datalen*sizeof(T), offsetby*sizeof(T)); } // # of T's
|
|
void zeroMemory() { VoidMemBlock::zeroMemory(); }
|
|
|
|
void reverse() {
|
|
const int nitems = getSize();
|
|
if (nitems <= 1) return;
|
|
MemBlock<T> nm(this);
|
|
T *mymem = getMemory(), *revmem = nm.getMemory();
|
|
for (int i = 0, j = nitems-1; j >= 0; i++, j--) {
|
|
MEMCPY(mymem+i, revmem+j, sizeof(T));
|
|
}
|
|
}
|
|
};
|
|
|
|
// just a convenience class for a 2d MemBlock<>
|
|
template <class T>
|
|
class MemMatrix : public MemBlock<T> {
|
|
public:
|
|
MemMatrix(int _width, int height, const T *data = NULL) : MemBlock<T>(_width * height, data), width(_width) {}
|
|
|
|
T *setSize(int _width, int height) {
|
|
MemBlock<T>::setSize(width * height);
|
|
width = _width;
|
|
}
|
|
|
|
// () access i.e. obj(x,y)
|
|
T& operator() (unsigned int x, unsigned int y) {
|
|
return *MemBlock<T>::m(x + y * width);
|
|
}
|
|
const T& operator() (unsigned int x, unsigned int y) const {
|
|
return *MemBlock<T>::m(x + y * width);
|
|
}
|
|
|
|
private:
|
|
int width;
|
|
};
|
|
|
|
|
|
#endif
|