;*****************************************************************************
; RAW to RAW convert plugin - for zSea image viewer
; Copyright (c) 2008-2011, Marat Zakiyanov aka Mario79, aka Mario
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are met:
; * Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
; * Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in the
; documentation and/or other materials provided with the distribution.
; * Neither the name of the <organization> nor the
; names of its contributors may be used to endorse or promote products
; derived from this software without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY Marat Zakiyanov ''AS IS'' AND ANY
; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
; DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;*****************************************************************************
; Convert:
; 16b in 8b
; 1b,2b,3b in 8b
format MS COFF
public EXPORTS
section '.flat' code readable align 16
;include 'macros.inc'
include '../../../../macros.inc'
;---------------------------------------------------------------------
START:
pushad
mov eax,dword [esp+36]
mov [pointer],eax
mov eax,[eax+4]
mov [image_file],eax
mov esi,[eax+28]
add esi,eax
mov edi,esi
mov ecx,[eax+32]
; xor ebx,ebx
; mov [raw_area],ebx
; mov ebx,[pointer]
; movzx eax,word [eax+18]
; mov [ebx+24],eax
; jmp .ret_ok
cmp [eax+16],word 16
je .16b
cmp [eax+12],dword 1
je .1b
cmp [eax+12],dword 2
je .2b
cmp [eax+12],dword 4
je .4b
;---------------------------------------------------------------------
.ret_ok:
; mov ebx,[pointer]
; mov eax,[raw_area]
; mov [ebx+20],eax ; store RAW pointer
; mov [ebx+24],ecx
mov ebx,[image_file]
cmp [ebx+18],word 2
jne @f
mov eax,[ebx+12]
shr eax,1
mov [ebx+12],eax
@@:
popad
ret 4
;---------------------------------------------------------------------
.less_8b:
mov edx,[image_file]
mov ecx,[area_size]
add ecx,[edx+28]
mcall 68,20
mov [image_file],eax
mov ecx,[area_size]
mov eax,ecx
shr ecx,2
test eax,3
jz @f
inc ecx
@@:
mov esi,[raw_area]
mov edi,[image_file]
add edi,[edi+28]
cld
rep movsd
mov ecx,[raw_area]
mcall 68,13
mov eax,[image_file]
mov ebx,[pointer]
mov [ebx+4],eax
popad
ret 4
;---------------------------------------------------------------------
.16b:
cmp [eax+18],word 3
je @f ;.convert_16_in_8
cmp [eax+18],word 4
jne .16b_1
@@:
xor ebx,ebx
mov bx,[eax+18]
xchg eax,ecx
xor edx,edx
div ebx
xchg ecx,eax
shr ecx,1
mov [eax+16],word 8
mov ebx,[eax+12]
shr ebx,1
mov [eax+12],ebx
mov ebx,eax
; jmp .ret_ok
.convert_16_in_8: ; converting 16 bit sample to 8 bit
cld
lodsw
mov al,ah
stosb
lodsw
mov al,ah
stosb
lodsw
mov al,ah
stosb
cmp [ebx+18],word 4
jne @f
lodsw
mov al,ah
stosb
@@:
dec ecx
jnz .convert_16_in_8
jmp .16b_end
;---------------------------------------------------------------------
.16b_1:
cmp [eax+18],word 1
je @f ;.convert_16_in_8_1
cmp [eax+18],word 2
jne .16b_end
@@:
shr ecx,1
mov [eax+16],word 8
mov ebx,[eax+12]
shr ebx,1
mov [eax+12],ebx
.convert_16_in_8_1:
cld
lodsw
; shr ax,8
; mov al,ah
stosb
dec ecx
jnz .convert_16_in_8_1
;---------------------------------------------------------------------
.16b_end:
xor eax,eax
mov [raw_area],eax
jmp .ret_ok
;---------------------------------------------------------------------
.4b:
call .get_memory
mov edx,ebx
inc ebx
shr ebx,1
.4b_1:
push ebx edi
@@:
cld
lodsb
shl eax,8
mov al,ah
and ah,0xf
shr al,4
stosw
dec ebx
jnz @b
pop edi ebx
add edi,edx
dec ecx
jnz .4b_1
jmp .less_8b ;.ret_ok
;---------------------------------------------------------------------
.2b:
call .get_memory
; jmp .ret_ok
; shr ecx,1
mov edx,ebx
mov eax,ebx
shr ebx,2
test eax,3
jz @f
inc ebx
@@:
mov ebp,ebx
.2b_1:
push ebp edi
@@:
cld
lodsb
mov bl,al
and al,11b
shl ax,8
mov al,bl
shr al,2
and al,11b
shl eax,8
mov al,bl
shr al,4
and al,11b
shl eax,8
mov al,bl
shr al,6
and al,11b
stosd
dec ebp
jnz @b
pop edi ebp
add edi,edx
dec ecx
jnz .2b_1
jmp .less_8b ;.ret_ok
;---------------------------------------------------------------------
.1b:
call .get_memory
mov edx,ebx
mov eax,ebx
shr ebx,3
test eax,7
jz @f
inc ebx
@@:
mov ebp,ebx
.1b_1:
push ebp edi
@@:
cld
lodsb
mov bl,al
shr al,4
and al,1b
shl ax,8
mov al,bl
shr al,5
and al,1b
shl eax,8
mov al,bl
shr al,6
and al,1b
shl eax,8
mov al,bl
shr al,7
; and al,1b
; shl eax,8
stosd
mov al,bl
and al,1b
shl ax,8
mov al,bl
shr al,1
and al,1b
shl eax,8
mov al,bl
shr al,2
and al,1b
shl eax,8
mov al,bl
shr al,3
and al,1b
stosd
dec ebp
jnz @b
pop edi ebp
add edi,edx
dec ecx
jnz .1b_1
jmp .less_8b ;.ret_ok
;---------------------------------------------------------------------
.get_memory:
mov ebx,dword 8
mov [eax+16],bx
mov [eax+12],ebx
; mov esi,[eax+28]
; add esi,eax
; push ecx
mov ecx,[eax+4]
imul ecx,[eax+8]
push eax
mov [area_size],ecx
mcall 68,12
; pop ecx
mov [raw_area],eax
mov edi,eax
pop eax
mov ebx,[eax+4]
mov ecx,[eax+8]
ret
;---------------------------------------------------------------------
Convert24b:
pushad
mov [pointer],eax
mov eax,[eax+4]
mov [image_file],eax
mov esi,[eax+28]
add esi,eax
mov ebp,[eax+20]
add ebp,eax
mov ecx,[eax+4]
imul ecx,[eax+8]
push eax ecx
lea ecx,[ecx*3]
mcall 68,12
mov [raw_area],eax
mov edi,eax
pop ecx eax
cmp [eax+12],dword 32
je .32b
cmp [eax+12],dword 16
je .16b
cmp [eax+12],dword 15
je .15b
cmp [eax+12],dword 8
je .8b
.ret_ok:
mov ebx,[pointer]
mov eax,[raw_area]
mov [ebx+20],eax ; store RAW pointer
popad
ret 4
;---------------------------------------------------------------------
.32b:
cld
lodsd
stosw
shr eax,16
stosb
dec ecx
jnz .32b
jmp .ret_ok
;---------------------------------------------------------------------
.16b:
cld
lodsw
xor ebx,ebx
ror ax,11
mov bl,al
and bl,11111b
shl bl,3
shl ebx,8
rol ax,6
mov bl,al
and bl,111111b
shl bl,2
shl ebx,8
rol ax,5
mov bl,al
and bl,11111b
shl bl,3
mov eax,ebx
cld
stosw
shr eax,16
stosb
dec ecx
jnz .16b
jmp .ret_ok
;---------------------------------------------------------------------
.15b:
cld
lodsw
xor ebx,ebx
ror ax,10
mov bl,al
and bl,11111b
shl bl,3
shl ebx,8
rol ax,5
mov bl,al
and bl,11111b
shl bl,3
shl ebx,8
rol ax,5
mov bl,al
and bl,11111b
shl bl,3
mov eax,ebx
cld
stosw
shr eax,16
stosb
dec ecx
jnz .15b
jmp .ret_ok
;---------------------------------------------------------------------
.8b:
xor eax,eax
cld
lodsb
shl eax,2
mov eax,[eax+ebp]
cld
stosw
shr eax,16
stosb
dec ecx
jnz .8b
jmp .ret_ok
;---------------------------------------------------------------------
align 16
EXPORTS:
dd szStart, START
dd szVersion, 0x00010001
dd szConv_24b, Convert24b
dd 0
szStart db 'START',0
szVersion db 'version',0
szConv_24b db 'Convert24b',0
pointer dd 0
image_file dd 0
;delta dd 0
;resolution dd 0
;compression dd 0
raw_area dd 0
area_size dd 0