; IMGVIEW.ASM
;
; This program displays jpeg images. The window can be resized.
;
; Version 0.0 END OF 2003
; Octavio Vega
; Version 0.1 7th March 2004
; Mike Hibbett ( very small part! )
; Version 0.11 7th April 2004
; Ville Turjanmaa ( 'set_as_bgr' function )
; Version 0.12 29th May 2004
; Ivan Poddubny (correct "set_as_bgr"+parameters+boot+...)
; Version 0.12 30 de mayo 2004
; Octavio Vega
; bugs correction and slideshow
; version 0.13 3 de junio 2004
; Octavio Vega
; unos retoques
; version 0.14 10th August 2004
; Mike Hibbett Added setting default colours
; version 0.15 24th August 2006
; diamond (rewritten to function 70)
;
memsize=20000h
org 0
PARAMS = memsize - 1024
appname equ 'Jpegview '
version equ '0.15'
use32
db 'MENUET01' ; 8 byte id
dd 0x01 ; header version
dd START ; start of code
dd I_END ; size of image
dd memsize ; memory for app
dd memsize - 1024 ; esp
dd PARAMS , 0x0 ; I_Param , I_Icon
stack_size=4096 + 1024
include 'macros.inc'
START: ; start of execution
cmp [PARAMS], byte 0
jne check_parameters
; Calculate the 'free' memory available
; to the application, and create the malloc block from it
.l1:
mov ecx,memsize-fin-stack_size
mov edi,fin
call add_mem
call colorprecalc ;inicializa tablas usadas para pasar de ybr a bgr
call draw_window
call read_string.rs_done
still:
push still
mov ebx,100 ;1 second
mov eax,23 ; wait here for event
int 0x40
cmp eax,1 ; redraw request ?
je draw_window
cmp eax,2 ; key in buffer ?
je read_string
cmp eax,3 ; button in buffer ?
je button
jmp display_next
button: ; BUTTON
mov eax,17
int 0x40
cmp ah,3
je set_as_bgr2
cmp ah,2
je slideshow
cmp ah,1 ; CLOSE PROGRAM
jne close_program.exit
close_program:
mov eax,-1
int 0x40
.exit:
ret
; Put a 'chunk' of the image on the window
put_image:
pushad
lea ebp,[edx+eax+7]
cmp [winxs],bp
jc .l1
lea ebp,[ecx+ebx+20+2+17]
cmp [winys],bp
jc .l1
add eax,2 ; offset for boarder
add ebx,2 ; offset for title bar
push ax ; pox
push bx ; pos
push cx ; size
push dx ; size
pop ecx
pop edx
mov ebx,edi
mov eax,7
int 40h ; Put image function
.l1:
popad
ret
;******************************************************************************
check_parameters:
cmp [PARAMS], dword "BOOT" ; received BOOT parameter -> goto handler
je boot_set_background
mov edi, name_string ; clear string with file name
mov al, 0
mov ecx, 100
rep stosb
mov ecx, 100 ; calculate length of parameter string
mov edi, PARAMS
repne scasb
sub edi, PARAMS
mov ecx, edi
mov esi, PARAMS ; copy parameters to file name
mov edi, name_string
cld
rep movsb
jmp START.l1 ; return to beggining of the progra
;******************************************************************************
boot_set_background:
mov ecx,memsize-fin-stack_size ; size
mov edi,fin ; pointer
call add_mem ; mark memory from fin to 0x100000-1024 as free
call colorprecalc ; calculate colors
mov esi,name_string
call open
test eax,eax
jz close_program
call jpeg_info
mov dword [jpeg_st],ebp
call set_as_bgr2 ; set wallpaper
jmp close_program ; close the program right now
;******************************************************************************
;******************************************************************************
set_as_bgr2:
mov ebp,dword[jpeg_st]
test ebp,ebp
jz .end
mov eax, 15
mov ebx, 1
mov ecx, [ebp + x_size]
mov edx, [ebp + y_size]
int 0x40
mov dword [ebp+draw_ptr],put_chunk_to_bgr
call jpeg_display
; Stretch the image to fit
mov eax, 15
mov ebx, 4
mov ecx, 2
int 0x40
mov eax, 15
mov ebx, 3
int 0x40
.end:
ret
;******************************************************************************
put_chunk_to_bgr:
pushad
mov [x_pointer], edi
mov esi, ecx
imul esi, 3
mov [x_numofbytes], esi
mov ecx, [ebp + x_size]
imul ecx, ebx
add ecx, eax
imul ecx, 3
mov [x_offset], ecx
mov [x_counter], edx
mov eax, [ebp + x_size]
imul eax, 3
mov [x_numofb2], eax
.new_string:
mov eax, 15
mov ebx, 5
mov ecx, [x_pointer]
mov edx, [x_offset]
mov esi, [x_numofbytes]
int 0x40
mov eax, [x_numofbytes]
add [x_pointer], eax
mov eax, [x_numofb2]
add [x_offset], eax
dec [x_counter]
jnz .new_string
popad
ret
;******************************************************************************
; *********************************************
; ******* WINDOW DEFINITIONS AND DRAW ********
; *********************************************
draw_window:
mov eax,48
mov ebx,3
mov ecx,sc
mov edx,sizeof.system_colors
int 0x40
mov eax,12
mov ebx,1
int 0x40
; Draw the window to the appropriate size - it may have
; been resized by the user
cmp [winxs], 0
jne dw_001
; Give the screen some inital defaults
mov [winxs], 400
mov [winys], 300
mov ax, 100
mov [winxo], ax
mov [winyo], ax
jmp dw_002
dw_001:
mov eax, 9
mov ebx, memsize - 1024
mov ecx, -1
int 0x40
mov eax, [ebx + 34]
mov [winxo], ax
mov eax, [ebx + 38]
mov [winyo], ax
mov eax, [ebx + 42]
mov [winxs], ax
mov eax, [ebx + 46]
mov [winys], ax
dw_002:
mov ebx, dword [winxo-2]
mov bx, [winxs]
mov ecx, dword [winyo-2]
mov cx, [winys]
xor eax,eax ; DRAW WINDOW
mov edx,[sc.work]
or edx,0x33000000
mov edi,header ; WINDOW LABEL
int 0x40
mov eax,8 ; BUTTON 2: slideshow
mov ebx,57
mov cx, [winys]
sub cx, 39
shl ecx, 16
add ecx, 12
mov esi, [sc.work_button]
mov edx,2
int 0x40
mov eax,4 ; Button text
movzx ebx, word [winys]
add ebx, 3 shl 16 - 36
mov ecx,[sc.work_button_text]
mov edx,setname
mov esi,setnamelen-setname
int 0x40
mov eax,8 ; BUTTON 3: set as background
mov bx, [winxs]
sub bx, 65
shl ebx, 16
mov bx,55
mov cx, [winys]
sub cx, 39
shl ecx, 16
add ecx, 12
mov esi, [sc.work_button]
mov edx,3
int 0x40
mov eax,4 ; Button text
movzx ebx, word [winxs]
sub ebx, 63
shl ebx,16
mov bx, word [winys]
sub bx,36
mov ecx,[sc.work_button_text]
mov edx,setbgr
mov esi,setbgrlen-setbgr
int 0x40
call print_strings
call load_image
mov eax,12 ; function 12:tell os about windowdraw
mov ebx,2 ; 2, end of draw
int 0x40
ret
; Read in the image file name.
read_string:
movzx edi,byte[name_string.cursor]
add edi,name_string
mov eax,2
int 0x40 ; Get the key value
shr eax,8
cmp eax,13 ; Return key ends input
je .rs_done
cmp eax,8
jnz .nobsl
cmp edi,name_string
je .exit
dec edi
mov [edi],byte 0;'_'
dec byte[name_string.cursor]
jmp print_strings
.exit: ret
.nobsl:
cmp eax,31
jbe .exit
cmp eax,97
jb .keyok
sub eax,32
.keyok:
mov ah,0
stosw
cmp edi,name_string.end
jnc print_strings
inc byte[name_string.cursor]
jmp print_strings
.rs_done:
call print_strings
mov esi,name_string
call open
test eax,eax
jz .exit
call jpeg_info
test ebp,ebp
jz close
xchg [jpeg_st],ebp
call jpeg_close
load_image:
mov eax,13 ; clear picture area
movzx ebx, word [winxs]
add ebx, 1 shl 16 -10
movzx ecx, word [winys]
sub ecx, 40
add ecx, 1 shl 16
mov edx,[sc.work]
int 0x40
mov ebp,[jpeg_st]
test ebp,ebp
jz .exit
mov dword [ebp+draw_ptr],put_image
jmp jpeg_display
.exit: ret
print_strings:
pusha
mov eax,13 ; clear text area
movzx ebx, word [winxs]
add ebx, 59 shl 16 -125
mov cx, [winys]
sub cx, 39
shl ecx, 16
add ecx, 12
mov edx,0xffffff
int 0x40
mov eax,4 ;
movzx ebx, word [winys]
add ebx, 61 shl 16 - 37
mov ecx,0x000000
mov edx,name_string
mov esi,60
int 0x40
popa
ret
slideshow:
cmp [file_dir], 0
jnz .exit
cmp [jpeg_st], 0
jz .exit
mov esi, name_string
movzx ecx, byte [name_string.cursor]
.l1:
cmp byte [esi+ecx], '/'
jz .l2
loop .l1
.exit:
ret
.l2:
mov byte [esi+ecx], 0
call open
mov byte [esi+ecx], '/'
test eax, eax
jz .exit
test byte [fileattr], 0x10
jz .exit
mov [file_dir], eax
inc ecx
mov [name_string.cursor], cl
display_next:
mov ebx, [file_dir]
test ebx, ebx
jnz @f
ret
@@:
mov byte [ebx], 1
mov byte [ebx+12], 1
mov dword [ebx+16], dirinfo
mov eax, 70
int 0x40
mov eax, [file_dir]
inc dword [eax+4]
cmp ebx, 1
jz @f
mov eax, [file_dir]
and [file_dir], 0
jmp close
@@:
movzx edi, byte [name_string.cursor]
add edi, name_string
lea esi, [dirinfo+32+40]
@@:
lodsb
stosb
test al, al
jnz @b
mov ecx, name_string.end
sub ecx, edi
rep stosb
call print_strings
mov esi,name_string
call open
test eax,eax
jz display_next
call jpeg_info
test ebp,ebp
jnz .l6
call close
jmp display_next
.l6:
mov dword[ebp+draw_ptr],put_image
push ebp
xchg [jpeg_st],ebp
call jpeg_close
pop ebp
jmp jpeg_display
include 'filelib.asm'
include 'memlib.asm'
include 'jpeglib.asm'
; DATA AREA
wcolor dd 0x000000
header db appname,version,0
setname db 'SLIDESHOW'
setnamelen:
setbgr db ' BGR '
setbgrlen:
x_pointer dd 0
x_offset dd 0
x_numofbytes dd 0
x_numofb2 dd 0
x_counter dd 0
winxo dw 0
winyo dw 0
winxs dw 0
winys dw 0
jpeg_st dd 0
file_dir dd 0
name_string: db '/rd/1/jpegview.jpg',0
rb 256
.end:
.cursor: db 19
.cursor2: db 0
align 4
rgb16: db 0,4,8,13,17,21,25,29,34,38,42,46,50,55,59,63
rgb4: db 0,21,42,63
include 'jpegdat.asm'
align 4
iniciomemoria:
dd -(iniciomemoria+4),-(iniciomemoria+4),(iniciomemoria+4),.l1,0
.l1 dd 0
fin:
I_END:
sc system_colors
fileattr: rb 40
dirinfo: rb 32+304