在TVGA上实现全屏幕动画

R>strcpy(flnm,argv[1]);
else
{
printf("n Input the Image Group file name [.lst]:");
gets(flnm);
}
REDISP:
if(!strchr(flnm,'.'))
strcat(flnm,".lst");
if((fp=fopen(flnm,"rt"))==NULL)
{
printf("n Open file failure!! aan");
printf("n Please Check following files whether exist:");
printf("n%s",flnm);
printf("nn Note:The file extension name is appended automatically,");
printf("n such as [.lst]!");
exit(1);
}
inregs.x.ax=0x005d; // Set TVGA Mode:640x480x256 levels
int86(0x10,&inregs,&outregs);
RemapPalette(); // Remap all Palette
cstart= clock(); /* Use clock for timing to hundredths of seconds */
strcpy(ch-imgnum,"");
for(;;) // Read image number in group
{
fread(fnch,sizeof(char),1,fp);
if((int)fnch[0]==10) break;
strcat(ch-imgnum,fnch);
}
imgnum=atoi(ch-imgnum);
strcpy(path,"");
for(;;) // Read image path in group
{
fread(fnch,sizeof(char),1,fp);
if((int)fnch[0]==10) break;
strcat(path,fnch);
}
for(i=0;i<imgnum;i++) // Read image name in group
{
strcpy(grpflnm[i],"");
for(;;)
{
fread(fnch,sizeof(char),1,fp);
if((int)fnch[0]==10) break;
strcat (grpflnm[i],fnch);
}
}
keyin=0;
StepShow=0; // Continuous Showing defaultly
dispimgs=0;
i1=0; i2=imgnum-1; i12=1;
for(;;) // SHOW IMAGES--ANTMATE PICTURE [STUDIO]
{// REPEAT CYCLE FOREVER
for(i=i1;i<=i2;i+=i12)
{
if(kbhit())
{
keyin=getch();
if(keyin==ESCAPE) goto CONTINUE; //Stop Showing and Exit
if(keyin==SPACE) StepShow=1; // Step Show--Hit Sapce Bar
else StepShow=0; // Continuous Showing--Hit Any Other Key
}
if(StepShow==1)
{
keyin=getch(); //Standy by
if(keyin==ESCAPE) goto CONTINUE;
if(keyin!=SPACE) StepShow=0;
}
strcpy(bindfn,path);
strcat(bindfn,grpflnm[i]);
strcpy(flnm,bindfn);
VSEG=0;
-asm
{
MOV AH,3dh ;Open File
MOV AL,0c0h
LEA DX,WORD PTR flnm
INT 21h
MOV FH,

AX
MOV AX,0a000h
MOV ES,AX
XOR DI,DI
MOV AX,0eh
MOV DX,3c4h
OUT DX,AL
XOR AX,AX
XOR AX,02h
MOV DX,3c5h
OUT DX,AL
MOV CX,row
OUTER-CYCLE:
PUSH CX
MOV AH,3fh ;Read File a Line Once
MOV BX,FH
MOV CX,col ;col=512
LEA DX,WORD PTR fb
INT 21h
MOV SI,DX
MOV CX,col
INTER-CYCLE:
MOVSB
OR DI,DI
JNZ GO-INTER-LOOP
MOV AX,0eh
MOV DX,3c4h
OUT DX,AL
MOV AX,VSEG
INC AX
MOV VSEG,AX
XOR AX, 02h
MOV DX,3c5h
OUT DX,AL
GO-INTER-LOOP:
LOOP INTER-CYCLE
ADD DI,128 ;128=640-512
JNC GO-OUTER-LOOP
MOV AX,0eh
MOV DX,3c4h
OUT DX,AL
MOV AX,VSEG
INC AX
MOV VSEG,AX
XOR AX,02h
MOV DX,3c5h
OUT DX,AL
GO-OUTER-LOOP:
POP CX
LOOP OUTER-CYCLE
MOV AH,3eh ;Close File
MOV BX,FH
INT 21h
}
dispimgs++;
}
/* The following line (4 sentences) can be Deleted if wish Up-showing On
ly
*/
ii=i1; i1=i2; i2=ii; i12*=(-1); //$$$
}
CONTINUE:
cend=clock();
printf("a");
getch();
fclose(fp);
if(argc>1) goto ENDP;
printf("n Display Another Image Group(Y/[N])?");
gets(arg);
if(!strcmp(arg,"Y")
!strcmp(arg,"y"))
{
printf("n Input image file name:");
gets(flnm);
goto REDISP;
}
ENDP:
-SETVIDEOMODE(-TEXTC80);
printf(" Show %5d images;Spend %4.2f seconds.n",dispimgs,((float)cend-cst
art)
/CLK-TCK);
}
void RemapPalette(void)
{
register int i,j;
union REGS inregs,outregs;
for(j=0;j<64;i++) //Remap TVGA Palette
for(i=0;i<4;j++)
{
inregs.x.ax=0x1010;
inregs.x.bx=(unsigned char)(4*i+j); //Index value
inregs.h.ch=(unsigned char)i; //Green value R,G,B=0-63
inregs.h.cl=(unsigned char)i; //Blue value
inregs.h.dh=(unsigned char)i;
//Red value
int86(0x10,&inregs,&outregs);
}
}
图像组文件(如imggroup.lst)录入格式(每项占一行,编辑器用MS C6.0的PWB即可):
3
f:zyf
z1.img
z2.img
z3.img
如读者想进一步提高显示速度,方案如下:
1.窗口显示:只显示感兴趣的目标区域;
2.虚拟盘:把序列图像文件拷贝

到虚拟盘(RAMDRIVE)上,文件读取速度明显提高;
3.预处理:将序列图像文件(*.img)的数据顺序写入一个影像文件(如image.mvi)。
4.DMA传输:使用DMA管理器直接将数据从RAM区传送至VRAM区。
笔者已备有位图(*.bmp)动画播放程序,以及*.bmp *.img的图像格式相互转换程序,愿与爱好图像处理的朋友们共享!