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| include 'win32a.inc'
format PE console
entry start
section '.c' code readable executable
start:
cinvoke fopen, sFileName, sFmt
cmp eax, 0
jz fError1
mov [fout], eax
cinvoke fread, buf, 1, 4*1024*1024, [fout]
mov [len], eax
cinvoke fclose, [fout]
; cinvoke printf, s2, eax
mov eax,dword[buf+12h]
mov [x], eax
mov eax,dword[buf+16h]
mov [y], eax
cinvoke fopen, sFileName, sFmt
mov eax, [len]
sub eax, 36h
cdq
mov ebx, 3
div ebx
mov ecx, eax
mov esi, buf+36h
mov edi, esi
mov [min1], 255
mov [min2], 255
mov [min3], 255
mov [max1], 0
mov [max2], 0
mov [max3], 0
rdtsc
mov [a1], eax
mov [a2], edx
loop1: lodsb
cmp al, [min1]
jae @f
mov [min1],al
@@:
cmp al, [max1]
jbe @f
mov [max1],al
@@:
lodsb
cmp al, [min2]
jae @f
mov [min2],al
@@:
cmp al, [max2]
jbe @f
mov [max2],al
@@:
lodsb
cmp al, [min3]
jae @f
mov [min3],al
@@:
cmp al, [max3]
jbe @f
mov [max3],al
@@:
loop loop1
mov eax, [len]
sub eax, 36h
cdq
mov ebx, 3
div ebx
mov ecx, eax
mov esi, buf+36h
mov edi, esi
loop2:
mov bl, [min1]
mov bh, [max1]
call norm
mov bl, [min2]
mov bh, [max2]
call norm
mov bl, [min3]
mov bh, [max3]
call norm
loop loop2
rdtsc
sub eax, [a1]
sbb edx, [a2]
cinvoke printf, s2, eax, edx
cinvoke fwrite, buf, [len], 1, [fout]
cinvoke fclose, [fout]
exit: cinvoke system,cmd
invoke ExitProcess,0
fError1:cinvoke printf, sEr1
jmp exit
norm:
lodsb
sub al, bl
mov ah, 255
mul ah
sub bh, bl
div bh
stosb
ret
section '.d' data readable writeable
sFileName db 'lab5.bmp',0
sFmt db 'r+b',0
s2 db 'time=%I64d',13,10,0
sEr1 db 'File open error.',13,10,0
cmd db 'pause',0
fout dd ?
buf rb 4*1024*1024
len dd ?
x dd ?
y dd ?
min1 db ?
min2 db ?
min3 db ?
max1 db ?
max2 db ?
max3 db ?
a1 dd ?
a2 dd ?
section '.i' import data readable
library kernel,'kernel32.dll',\
msvcrt,'msvcrt.dll'
import kernel,\
ExitProcess,'ExitProcess'
import msvcrt,\
printf,'printf',\
fread,'fread',\
fopen,'fopen',\
fclose,'fclose',\
fwrite,'fwrite',\
system,'system' |
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