dolphin/Source/Plugins/Plugin_VideoDX9/Src/Fifo.h

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#ifndef _FIFO_H
#define _FIFO_H
#include "Common.h"
// inline for speed!
class FifoReader
{
u8 *ptr;
u8 *end;
u8 *tempPtr; //single element stack :P
u8 *tempEnd;
bool pushed;
public:
void Init(u8 *_ptr, u8 *_end)
{
ptr = _ptr; end = _end; pushed = false;
}
bool IsPushed() {return pushed;}
void Push(u8 *_ptr, u8 *_end) {pushed = true; tempPtr = ptr; tempEnd = end; ptr = _ptr; end = _end;}
void Pop() {pushed = false; ptr = tempPtr; end = tempEnd;}
u8 Peek8 (int offset) { return ptr[offset]; }
u16 Peek16(int offset) { return _byteswap_ushort(*(u16*)(ptr+offset)); }
u32 Peek32(int offset) { return _byteswap_ulong(*(u32*)(ptr+offset)); }
u8 Read8 () {return *ptr++;}
u16 Read16() {const u16 value = _byteswap_ushort(*((u16*)ptr)); ptr+=2; return value;}
u32 Read32() {const u32 value = _byteswap_ulong(*((u32*)ptr)); ptr+=4; return value;}
float Read32F() {const u32 value = _byteswap_ulong(*((u32*)ptr)); ptr+=4; return *(float*)&value;}
size_t GetRemainSize() const { return (int)(end - ptr); }
u8 *GetPtr() const { return ptr; }
void MoveEndForward() { end += 32; }
u8 *GetEnd() const { return end; }
};
extern FifoReader fifo;
void Fifo_Init();
void Fifo_Shutdown();
#endif