计算机组织与结构实验MMX实验报告

计算机组织与结构实验报告姓 名：徐杨 学 号：班 级：软件74【实验题目】使用MMX指令，完成图片的淡入淡出效果，并与不使用MMX的普通淡入淡出进行比较【实验分析】图片是由一个个像素组成，对照片的每个像素逐一处理，就可达到渐变效果，常用的渐变公式为：Pixel_C= (Pixel_A- Pixel_B)*fade+Pixel_B等价的公式为Pixel_C=Pixel_A*fade+Pixel_B*(1-fade);其中fade为渐变因子，当fade从1到0逐渐改变时，就可产生渐变效果。MMX指令是为高速处理多媒体数据而设计的一组汇编指令，它提供了8个64位寄存器【实验代码】本实验中在 visual C+ 6.0 平台上编写MFC应用程序，通过比较采用C+内联汇编方式调用的MMX指令和调用API对图片像素逐个处理方法的处理效率，学习体会提高数据处理速度的方法。主要代码如下：(1) 未使用MMX 技术的代码如下，本程序采用的是像素描点的方法，一共225针，分十次扫描完毕实现的淡入淡出效果：/ MMX1View.cpp : implementation of the CMMX1View class/#include stdafx.h#include MMX1.h#include MMX1Doc.h#include MMX1View.h#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/ CMMX1ViewIMPLEMENT_DYNCREATE(CMMX1View, CView)BEGIN_MESSAGE_MAP(CMMX1View, CView)/AFX_MSG_MAP(CMMX1View)/ NOTE - the ClassWizard will add and remove mapping macros here./ DO NOT EDIT what you see in these blocks of generated code!/AFX_MSG_MAP/ Standard printing commandsON_COMMAND(ID_FILE_PRINT, CView:OnFilePrint)ON_COMMAND(ID_FILE_PRINT_DIRECT, CView:OnFilePrint)ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView:OnFilePrintPreview)END_MESSAGE_MAP()/ CMMX1View construction/destructionCMMX1View:CMMX1View()/ TODO: add construction code hereHBITMAP hBitmap=(HBITMAP)LoadImage(NULL,_T(1.bmp),IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION|LR_DEFAULTSIZE|LR_LOADFROMFILE);this-m_Bitmap.Attach(hBitmap);BITMAP BM;this-m_Bitmap.GetBitmap(&BM);/目标图像 HBITMAP tarhBitmap=(HBITMAP)LoadImage(NULL,_T(4.bmp),IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION|LR_DEFAULTSIZE|LR_LOADFROMFILE); this-m_tarBitmap.Attach(tarhBitmap);BITMAP BM2;this-m_tarBitmap.GetBitmap(&BM2);/this-m_newptr=new BYTEBM.bmWidth*BM.bmHeight*3;this-m_newptr2=new BYTEBM.bmWidth*BM.bmHeight*3;/BYTE* temp=(BYTE*)BM.bmBits;BYTE* temp2=(BYTE*)BM2.bmBits;/if(this-m_newptr=NULL)return ;BYTE *pSrc=NULL;BYTE *pDes=NULL;BYTE *pSrc2=NULL;BYTE *pDes2=NULL; for(int h=0;hBM.bmHeight;h+) for(int w=0;wm_newptr+w*3+h*BM.bmWidthBytes;/按位复制memcpy(pDes,pSrc,3);pSrc2=temp2+w*3+h*BM.bmWidthBytes;pDes2=this-m_newptr2+w*3+h*BM.bmWidthBytes;/按位复制memcpy(pDes2,pSrc2,3); this-m_BM.bmBitsPixel=BM.bmBitsPixel;this-m_BM.bmHeight=BM.bmHeight;this-m_BM.bmPlanes=BM.bmPlanes;this-m_BM.bmType=BM.bmType;this-m_BM.bmWidth=BM.bmWidth;this-m_BM.bmWidthBytes=BM.bmWidthBytes; CMMX1View:CMMX1View()BOOL CMMX1View:PreCreateWindow(CREATESTRUCT& cs)/ TODO: Modify the Window class or styles here by modifying/ the CREATESTRUCT csreturn CView:PreCreateWindow(cs);/ CMMX1View drawingvoid CMMX1View:OnDraw(CDC* pDC)CMMX1Doc* pDoc = GetDocument();ASSERT_VALID(pDoc);/ TODO: add draw code for native data hereBITMAP BM;this-m_Bitmap.GetBitmap(&BM);BITMAP BM2;this-m_tarBitmap.GetBitmap(&BM2); CDC MemDC;MemDC.CreateCompatibleDC(NULL);/BYTE *pSrc=NULL;BYTE *pDes=NULL;BYTE *pSrc2=NULL;BYTE *pDes2=NULL;CString count;for(int fade=0;fade=250;fade+=10)for(int h=0;hBM.bmHeight;h+)/Ax+(1-x)B=(A-B)x+B for(int w=0;w1 w/3 pSrc=(BYTE*)BM.bmBits+w*3+h*BM.bmWidthBytes;pSrc2=(BYTE*)BM2.bmBits+w*3+h*BM2.bmWidthBytes;int blue=(int)*pSrc;int green=(int)*(pSrc+1);int red=(int)*(pSrc+2);int tarblue=(int)*pSrc2;int targreen=(int)*(pSrc2+1);int tarred=(int)*(pSrc2+2);int realblue=(blue-tarblue)*(float)fade/255.0)+tarblue;int realred=(red-tarred)*(float)fade/255.0)+tarred;int realgreen=(green-targreen)*(float)fade/255.0)+targreen; pDC-SetPixel(w,BM.bmHeight-h,RGB(realred,realgreen,realblue); count.Format(%d,fade);pDC-TextOut(800,100,count);/ CMMX1View printingBOOL CMMX1View:OnPreparePrinting(CPrintInfo* pInfo)/ default preparationreturn DoPreparePrinting(pInfo);void CMMX1View:OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)/ TODO: add extra initialization before printingvoid CMMX1View:OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)/ TODO: add cleanup after printing/ CMMX1View diagnostics#ifdef _DEBUGvoid CMMX1View:AssertValid() constCView:AssertValid();void CMMX1View:Dump(CDumpContext& dc) constCView:Dump(dc);CMMX1Doc* CMMX1View:GetDocument() / non-debug version is inlineASSERT(m_pDocument-IsKindOf(RUNTIME_CLASS(CMMX1Doc);return (CMMX1Doc*)m_pDocument;#endif /_DEBUG/（2）使用MMX技术的代码如下 / MMX3View.cpp : implementation of the CMMX3View class/#include stdafx.h#include MMX3.h#include MMX3Doc.h#include MMX3View.h#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/ CMMX3ViewIMPLEMENT_DYNCREATE(CMMX3View, CView)BEGIN_MESSAGE_MAP(CMMX3View, CView)/AFX_MSG_MAP(CMMX3View)/ NOTE - the ClassWizard will add and remove mapping macros here./ DO NOT EDIT what you see in these blocks of generated code!/AFX_MSG_MAP/ Standard printing commandsON_COMMAND(ID_FILE_PRINT, CView:OnFilePrint)ON_COMMAND(ID_FILE_PRINT_DIRECT, CView:OnFilePrint)ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView:OnFilePrintPreview)END_MESSAGE_MAP()/ CMMX3View construction/destructionCMMX3View:CMMX3View()/ TODO: add construction code hereHBITMAP hBitmap=(HBITMAP)LoadImage(NULL,_T(1.bmp),IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION|LR_DEFAULTSIZE|LR_LOADFROMFILE);this-m_bitmap.Attach(hBitmap);/HBITMAP tarhBitmap=(HBITMAP)LoadImage(NULL,_T(4.bmp),IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION|LR_DEFAULTSIZE|LR_LOADFROMFILE); this-m_tarbitmap.Attach(tarhBitmap);/BITMAP BM;this-m_bitmap.GetBitmap(&BM);BITMAP BM2;this-m_tarbitmap.GetBitmap(&BM2);/this-m_newptr=new BYTEBM.bmWidth*BM.bmHeight*3;this-m_newptr2=new BYTEBM.bmWidth*BM.bmHeight*3;/ BYTE* temp=(BYTE*)BM.bmBits;BYTE* temp2=(BYTE*)BM2.bmBits;/if(this-m_newptr=NULL)return ;BYTE *pSrc=NULL;BYTE *pDes=NULL;BYTE *pSrc2=NULL;BYTE *pDes2=NULL; for(int h=0;hBM.bmHeight;h+) for(int w=0;wm_newptr+w*3+h*BM.bmWidthBytes;/按位复制memcpy(pDes,pSrc,3);pSrc2=temp2+w*3+h*BM.bmWidthBytes;pDes2=this-m_newptr2+w*3+h*BM.bmWidthBytes;/按位复制memcpy(pDes2,pSrc2,3); this-m_tarptr=new BYTEBM.bmWidth*BM.bmHeight*3;CMMX3View:CMMX3View()BOOL CMMX3View:PreCreateWindow(CREATESTRUCT& cs)/ TODO: Modify the Window class or styles here by modifying/ the CREATESTRUCT csreturn CView:PreCreateWindow(cs);/ CMMX3View drawingvoid CMMX3View:OnDraw(CDC* pDC)CMMX3Doc* pDoc = GetDocument();ASSERT_VALID(pDoc);/ TODO: add draw code for native data here/BITMAP BM;this-m_bitmap.GetBitmap(&BM);/BYTE temp4=0,0,0,0; /写图像BYTE* pSrc=this-m_tarptr;CString count;/120出问题for(int i=0;im_newptr,this-m_newptr2,(int)BM.bmWidth,(int)BM.bmHeight,i);for(int h=0;hBM.bmHeight;h+) for(int w=0;w1 w/3 /pSrc=(BYTE*)this-m_tarptr+w*3+h*BM.bmWidthBytes; pSrc=(BYTE*)this-m_tarptr+w*3+h*BM.bmWidthBytes; / int blue=(int)*pSrc;/int green=(int)*(pSrc+1);/int red=(int)*(pSrc+2); pDC-SetPixel(w,BM.bmHeight-h,RGB(*(pSrc+2),*(pSrc+1),*pSrc); count.Format(%d,i);pDC-TextOut(800,100,count);/ CMMX3View printingBOOL CMMX3View:OnPreparePrinting(CPrintInfo* pInfo)/ default preparationreturn DoPreparePrinting(pInfo);void CMMX3View:OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)/ TODO: add extra initialization before printingvoid CMMX3View:OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)/ TODO: add cleanup after printing/ CMMX3View diagnostics#ifdef _DEBUGvoid CMMX3View:AssertValid() constCView:AssertValid();void CMMX3View:Dump(CDumpContext& dc) constCView:Dump(dc);CMMX3Doc* CMMX3View:GetDocument() / non-debug version is inlineASSERT(m_pDocument-IsKindOf(RUNTIME_CLASS(CMMX3Doc);return (CMMX3Doc*)m_pDocument;#endif /_DEBUG/ CMMX3View message handlers/DEL void CMMX3View:HandlePtr()/DEL /DEL /DEL /DEL void CMMX3View:Handle(BYTE *pSrc, BYTE *pSrc2, BYTE *pDes, int w, int h)/DEL /DEL /DEL /DEL void CMMX3View:HANDLE(BYTE *pSrc, BYTE *pSrc2, BYTE *&pDes, int w, int h)/DEL /DEL w=w*3*h/4;/DEL _asm/DEL /DEL mov ecx,0/DEL mov eax,w/DEL /DEL /DEL /DEL BYTE CMMX3View:HANDLE(BYTE *pSrc, BYTE *pSrc2, int w, int h,int i) /* BYTE *target=this-m_tarptr;w=w*3*h/4;_int16 fade4=i*256,i*256,i*256,i*256;_int16 temp;/ecx 计数器 esi 源地址 edi 目的图像地址 ebx 新生成地址_asmmov ebx,target/目的地址mov ecx,w /像素总数mov esi,pSrc/第一幅图像地址mov edi,pSrc2/第二幅图像地址pxor mm7,mm7/清空MM7浮点寄存器，为位扩展准备操作数 movq mm3,fade/mm3调整像素比例 back:/ movd mm0,esi/源操作数 / movq temp,mm0/调试断点 movd mm1,edi/目的操作数 /movq temp,mm1/调试断点 punpcklbw mm0,mm7/源拓展 punpcklbw mm1,mm7/目的拓展 psubw mm0,mm1/原操作减去目的操作 pmulhw mm0,mm3/乘以比例 paddw mm0,mm1/加上目的操作数 packuswb mm0,mm7/压缩包 /movd temp,mm0/调试断点 movd ebx,mm0/图像送回 add esi,4/ add edi,4/ add ebx,4/loop back / emms/ return 1;*/ BYTE *target=this-m_tarptr;w=w*3*h/4;_int16 fade4=i,i,i,i;/_int16 temp4;_int16 defade4=(255-i),(255-i),(255-i),(255-i);/ecx 计数器 esi 源地址 edi 目的图像地址 ebx 新生成地址_asmmov ebx,target/目的地址mov ecx,w /像素总数mov esi,pSrc/第一幅图像地址mov edi,pSrc2/第二幅图像地址pxor mm7,mm7/清空MM7浮点寄存器，为位扩展准备操作数 movq mm3,fade/mm3调整像素比例movq mm4,defade back:/ movd mm0,esi/源操作数 / movq temp,mm0/调试断点 movd mm1,edi/目的操作数 /movq