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