59 lines
2.1 KiB
C++
59 lines
2.1 KiB
C++
// Copyright (C) 2003-2008 Dolphin Project.
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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, version 2.0.
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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 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#ifndef _FIFO_H
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#define _FIFO_H
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#include "Common.h"
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// inline for speed!
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class FifoReader
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{
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u8 *ptr;
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u8 *end;
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u8 *tempPtr; //single element stack :P
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u8 *tempEnd;
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bool pushed;
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public:
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void Init(u8 *_ptr, u8 *_end)
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{
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ptr = _ptr; end = _end; pushed = false;
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}
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bool IsPushed() {return pushed;}
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void Push(u8 *_ptr, u8 *_end) {pushed = true; tempPtr = ptr; tempEnd = end; ptr = _ptr; end = _end;}
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void Pop() {pushed = false; ptr = tempPtr; end = tempEnd;}
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u8 Peek8 (int offset) const { return ptr[offset]; }
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u16 Peek16(int offset) const { return Common::swap16(*(u16*)(ptr+offset)); }
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u32 Peek32(int offset) const { return Common::swap32(*(u32*)(ptr+offset)); }
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u8 Read8 () {return *ptr++;}
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u16 Read16() {const u16 value = Common::swap16(*((u16*)ptr)); ptr+=2; return value;}
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u32 Read32() {const u32 value = Common::swap32(*((u32*)ptr)); ptr+=4; return value;}
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float Read32F() {const u32 value = Common::swap32(*((u32*)ptr)); ptr+=4; return *(float*)&value;}
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int GetRemainSize() const { return (int)(end - ptr); }
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u8 *GetPtr() const { return ptr; }
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void MoveEndForward() { end += 32; }
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u8 *GetEnd() const { return end; }
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};
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extern FifoReader fifo;
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void Fifo_Init();
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void Fifo_Shutdown();
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void Fifo_EnterLoop(const SVideoInitialize &video_initialize);
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#endif
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