forked from KolibriOS/kolibrios
586 lines
12 KiB
NASM
586 lines
12 KiB
NASM
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;;================================================================================================;;
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;;//// convert.asm //// (c) dunkaist, 2012 ///////////////////////////////////////////////////////;;
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;;================================================================================================;;
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;; ;;
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;; This file is part of Common development libraries (Libs-Dev). ;;
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;; ;;
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;; Libs-Dev is free software: you can redistribute it and/or modify it under the terms of the GNU ;;
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;; Lesser General Public License as published by the Free Software Foundation, either version 2.1 ;;
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;; of the License, or (at your option) any later version. ;;
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;; ;;
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;; Libs-Dev is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without ;;
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;; even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ;;
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;; Lesser General Public License for more details. ;;
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;; ;;
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;; You should have received a copy of the GNU Lesser General Public License along with Libs-Dev. ;;
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;; If not, see <http://www.gnu.org/licenses/>. ;;
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;; ;;
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;;================================================================================================;;
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;;================================================================================================;;
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proc img.convert _src, _dst, _dst_type, _flags, _param ;;
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;;------------------------------------------------------------------------------------------------;;
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;? scale _image ;;
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;;------------------------------------------------------------------------------------------------;;
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;> [_src] = pointer to source image ;;
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;> [_flags] = see libimg.inc ;;
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;> [_dst_type] = the Image.Type of converted image ;;
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;> [_dst] = pointer to destination image, if any ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 / pointer to converted image ;;
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;< ecx = error code / undefined ;;
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;;================================================================================================;;
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locals
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width rd 1
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height rd 1
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endl
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mov ebx, [_src]
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mov eax, 1
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mov ecx, [_dst_type]
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shl eax, cl
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mov ecx, [ebx + Image.Type]
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test eax, [img.types_table + 4*ecx]
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jnz @f
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mov ecx, LIBIMG_ERROR_BIT_DEPTH
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jmp .error
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@@:
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mov eax, [_dst]
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test eax, eax
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jnz @f
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stdcall img.create, [ebx + Image.Width], [ebx + Image.Height], [_dst_type]
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test eax, eax
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jz .error
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mov [_dst], eax
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@@:
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mov edi, [eax + Image.Data]
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mov esi, [ebx + Image.Data]
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mov eax, [ebx + Image.Type]
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cmp eax, Image.bpp8i
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je .bpp8i
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cmp eax, Image.bpp8g
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je .bpp8g
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cmp eax, Image.bpp24
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je .bpp24
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cmp eax, Image.bpp32
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je .bpp32
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cmp eax, Image.bpp15
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je .bpp15
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cmp eax, Image.bpp16
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je .bpp16
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cmp eax, Image.bpp1
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je .bpp1
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cmp eax, Image.bpp8a
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je .bpp8a
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mov ecx, LIBIMG_ERROR_BIT_DEPTH
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jmp .error
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.find_in_table_and_jump:
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mov ecx, [_dst_type]
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@@:
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mov eax, [edx]
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add edx, 8
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cmp eax, ecx
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jne @b
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jmp dword[edx - 4]
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.bpp8i:
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mov edx, img.convert.bpp8i.table
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jmp .find_in_table_and_jump
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.bpp8i_to_bpp24:
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mov ecx, [ebx + Image.Width]
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imul ecx, [ebx + Image.Height]
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mov ebx, [ebx + Image.Palette]
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sub ecx, 1
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jz .bpp8i.last
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@@:
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movzx eax, byte[esi]
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add esi, 1
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mov eax, [ebx + eax*4]
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mov [edi], eax
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add edi, 3
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sub ecx, 1
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jnz @b
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.bpp8i.last:
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movzx eax, byte[esi]
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mov eax, [ebx + eax*4]
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mov [edi], ax
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shr eax, 16
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mov [edi + 2], al
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mov eax, [_dst]
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jmp .quit
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.bpp8g:
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mov edx, img.convert.bpp8g.table
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jmp .find_in_table_and_jump
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.bpp8g_to_bpp1:
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mov eax, [_dst]
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mov eax, [eax + Image.Palette]
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mov dword[eax], 0x00000000
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mov dword[eax + 4], 0x00ffffff
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mov edx, [ebx + Image.Height]
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.bpp8g_to_bpp1.line:
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mov ax, 0x0800
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mov ecx, [ebx + Image.Width]
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.bpp8g_to_bpp1.pixel:
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shl al, 1
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cmp byte[esi], 0x7f
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cmc
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adc eax, 0
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add esi, 1
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dec ah
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jnz @f
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mov byte[edi], al
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add edi, 1
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mov ax, 0x0800
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@@:
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dec ecx
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jnz .bpp8g_to_bpp1.pixel
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cmp ah, 8
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je @f
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mov cl, ah
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shl al, cl
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mov byte[edi], al
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add edi, 1
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@@:
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dec edx
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jnz .bpp8g_to_bpp1.line
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mov eax, [_dst]
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jmp .quit
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.bpp8g_to_bpp24:
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mov ecx, [ebx + Image.Width]
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imul ecx, [ebx + Image.Height]
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@@:
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mov al, byte[esi]
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mov byte[edi + 0], al
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mov byte[edi + 1], al
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mov byte[edi + 2], al
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add esi, 1
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add edi, 3
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sub ecx, 1
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jnz @b
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mov eax, [_dst]
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jmp .quit
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.bpp24:
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mov edx, img.convert.bpp24.table
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jmp .find_in_table_and_jump
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.bpp24_to_bpp24:
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mov ecx, [ebx + Image.Width]
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imul ecx, [ebx + Image.Height]
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lea ecx, [ecx*3]
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mov edx, ecx
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shr ecx, 2
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rep movsd
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mov ecx, edx
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and ecx, 3
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rep movsb
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mov eax, [_dst]
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jmp .quit
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.bpp24_to_bpp8g:
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mov ecx, [ebx + Image.Width]
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imul ecx, [ebx + Image.Height]
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@@:
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movzx ebx, byte[esi + 0]
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movzx eax, byte[esi + 1]
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add ebx, eax
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movzx eax, byte[esi + 2]
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add eax, ebx
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mov ebx, 3
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add esi, 3
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div bl
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mov byte[edi], al
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add edi, 1
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sub ecx, 1
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jnz @b
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mov eax, [_dst]
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jmp .quit
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.bpp32:
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mov edx, img.convert.bpp32.table
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jmp .find_in_table_and_jump
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.bpp32_to_bpp24:
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mov ecx, [ebx + Image.Width]
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imul ecx, [ebx + Image.Height]
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@@:
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mov eax, [esi]
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mov [edi], ax
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shr eax, 16
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mov [edi + 2], al
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add esi, 4
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add edi, 3
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sub ecx, 1
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jnz @b
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mov eax, [_dst]
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jmp .quit
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.bpp15:
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mov edx, img.convert.bpp15.table
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jmp .find_in_table_and_jump
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.bpp15_to_bpp24:
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mov ecx, [ebx + Image.Width]
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imul ecx, [ebx + Image.Height]
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.bpp15.intel: ; copypasted from do_rgb
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push ebx ebp
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sub ecx, 4
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jb .bpp15.tail
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align 16
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.bpp15.intel.loop:
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repeat 2
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mov ebx, [esi]
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mov al, [esi]
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mov ah, [esi + 1]
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add esi, 4
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and al, 0x1F
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and ah, 0x1F shl 2
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mov ebp, ebx
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mov dl, al
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mov dh, ah
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shr al, 2
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shr ah, 4
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shl dl, 3
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shl dh, 1
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and ebp, 0x1F shl 5
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add al, dl
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add ah, dh
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shr ebp, 2
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mov [edi], al
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mov [edi + 2], ah
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mov eax, ebx
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mov ebx, ebp
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shr eax, 16
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shr ebx, 5
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add ebx, ebp
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mov ebp, eax
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mov [edi + 1], bl
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and eax, (0x1F) or (0x1F shl 10)
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and ebp, 0x1F shl 5
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lea edx, [eax + eax]
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shr al, 2
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mov ebx, ebp
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shr ah, 4
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shl dl, 2
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shr ebx, 2
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shr ebp, 7
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add al, dl
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add ah, dh
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mov [edi + 3], al
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add ebx, ebp
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mov [edi + 5], ah
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mov [edi + 4], bl
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add edi, 6
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end repeat
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sub ecx, 4
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jnb .bpp15.intel.loop
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.bpp15.tail:
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add ecx, 4
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jz .bpp15.done
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@@:
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movzx eax, word [esi]
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mov ebx, eax
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add esi, 2
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and eax, (0x1F) or (0x1F shl 10)
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and ebx, 0x1F shl 5
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lea edx, [eax + eax]
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shr al, 2
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mov ebp, ebx
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shr ebx, 2
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shr ah, 4
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shl dl, 2
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shr ebp, 7
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add eax, edx
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add ebx, ebp
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mov [edi], al
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mov [edi + 1], bl
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mov [edi + 2], ah
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add edi, 3
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sub ecx, 1
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jnz @b
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.bpp15.done:
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pop ebp ebx
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mov eax, [_dst]
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jmp .quit
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.bpp15.amd:
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push ebx ebp
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sub ecx, 4
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jb .bpp15.tail
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align 16
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.bpp15.amd.loop:
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repeat 4
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if (% mod 2) = 1
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mov eax, dword[esi]
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mov ebx, dword[esi]
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else
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movzx eax, word[esi]
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mov ebx, eax
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end if
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add esi, 2
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and eax, (0x1F) or (0x1F shl 10)
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and ebx, 0x1F shl 5
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lea edx, [eax + eax]
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shr al, 2
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mov ebp, ebx
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shr ebx, 2
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shr ah, 4
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shl dl, 2
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shr ebp, 7
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add eax, edx
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add ebx, ebp
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mov [edi], al
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mov [edi + 1], bl
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mov [edi + 2], ah
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add edi, 3
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end repeat
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sub ecx, 4
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jnb .bpp15.amd.loop
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jmp .bpp15.tail
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.bpp16:
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mov edx, img.convert.bpp16.table
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jmp .find_in_table_and_jump
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.bpp16_to_bpp24:
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mov ecx, [ebx + Image.Width]
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imul ecx, [ebx + Image.Height]
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.bpp16.intel:
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push ebx ebp
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sub ecx, 4
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jb .bpp16.tail
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align 16
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.bpp16.intel.loop:
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repeat 2
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mov ebx, [esi]
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mov al, [esi]
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mov ah, [esi + 1]
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add esi, 4
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and al, 0x1F
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and ah, 0x1F shl 3
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mov ebp, ebx
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mov dl, al
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mov dh, ah
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shr al, 2
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shr ah, 5
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shl dl, 3
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and ebp, 0x3F shl 5
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add al, dl
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add ah, dh
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shr ebp, 3
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mov [edi], al
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mov [edi + 2], ah
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mov eax, ebx
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mov ebx, ebp
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shr eax, 16
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shr ebx, 6
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add ebx, ebp
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mov ebp, eax
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mov [edi + 1], bl
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and eax, (0x1F) or (0x1F shl 11)
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and ebp, 0x3F shl 5
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mov edx, eax
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shr al, 2
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mov ebx, ebp
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shr ah, 5
|
||
|
|
shl dl, 3
|
||
|
|
shr ebx, 3
|
||
|
|
shr ebp, 9
|
||
|
|
add al, dl
|
||
|
|
add ah, dh
|
||
|
|
mov [edi + 3], al
|
||
|
|
add ebx, ebp
|
||
|
|
mov [edi + 5], ah
|
||
|
|
mov [edi + 4], bl
|
||
|
|
add edi, 6
|
||
|
|
end repeat
|
||
|
|
sub ecx, 4
|
||
|
|
jnb .bpp16.intel.loop
|
||
|
|
.bpp16.tail:
|
||
|
|
add ecx, 4
|
||
|
|
jz .bpp16.done
|
||
|
|
@@:
|
||
|
|
movzx eax, word[esi]
|
||
|
|
mov ebx, eax
|
||
|
|
add esi, 2
|
||
|
|
and eax, (0x1F) or (0x1F shl 11)
|
||
|
|
and ebx, 0x3F shl 5
|
||
|
|
mov edx, eax
|
||
|
|
shr al, 2
|
||
|
|
mov ebp, ebx
|
||
|
|
shr ebx, 3
|
||
|
|
shr ah, 5
|
||
|
|
shl dl, 3
|
||
|
|
shr ebp, 9
|
||
|
|
add eax, edx
|
||
|
|
add ebx, ebp
|
||
|
|
mov [edi], al
|
||
|
|
mov [edi + 1], bl
|
||
|
|
mov [edi + 2], ah
|
||
|
|
add edi, 3
|
||
|
|
sub ecx, 1
|
||
|
|
jnz @b
|
||
|
|
.bpp16.done:
|
||
|
|
pop ebp ebx
|
||
|
|
mov eax, [_dst]
|
||
|
|
jmp .quit
|
||
|
|
|
||
|
|
.bpp16.amd:
|
||
|
|
push ebx ebp
|
||
|
|
sub ecx, 4
|
||
|
|
jb .bpp16.tail
|
||
|
|
align 16
|
||
|
|
.bpp16.amd.loop:
|
||
|
|
repeat 4
|
||
|
|
if (% mod 2) = 1
|
||
|
|
mov eax, dword[esi]
|
||
|
|
mov ebx, dword[esi]
|
||
|
|
else
|
||
|
|
movzx eax, word[esi]
|
||
|
|
mov ebx, eax
|
||
|
|
end if
|
||
|
|
add esi, 2
|
||
|
|
and eax, (0x1F) or (0x1F shl 11)
|
||
|
|
and ebx, 0x3F shl 5
|
||
|
|
mov edx, eax
|
||
|
|
shr al, 2
|
||
|
|
mov ebp, ebx
|
||
|
|
shr ebx, 3
|
||
|
|
shr ah, 5
|
||
|
|
shl dl, 3
|
||
|
|
shr ebp, 9
|
||
|
|
add eax, edx
|
||
|
|
add ebx, ebp
|
||
|
|
mov [edi], al
|
||
|
|
mov [edi + 1], bl
|
||
|
|
mov [edi + 2], ah
|
||
|
|
add edi, 3
|
||
|
|
end repeat
|
||
|
|
sub ecx, 4
|
||
|
|
jnb .bpp16.amd.loop
|
||
|
|
jmp .bpp16.tail
|
||
|
|
|
||
|
|
|
||
|
|
.bpp1:
|
||
|
|
mov edx, img.convert.bpp1.table
|
||
|
|
jmp .find_in_table_and_jump
|
||
|
|
.bpp1_to_bpp24:
|
||
|
|
push [ebx + Image.Width]
|
||
|
|
pop [width]
|
||
|
|
push [ebx + Image.Height]
|
||
|
|
pop [height]
|
||
|
|
mov edx, [ebx + Image.Palette]
|
||
|
|
.bpp1_to_bpp24.line:
|
||
|
|
mov ebx, [width]
|
||
|
|
.bpp1_to_bpp24.byte:
|
||
|
|
mov ah, 8
|
||
|
|
mov al, byte[esi]
|
||
|
|
add esi, 1
|
||
|
|
.bpp1_to_bpp24.bit:
|
||
|
|
xor ecx, ecx
|
||
|
|
shl al, 1
|
||
|
|
adc ecx, 0
|
||
|
|
mov ecx, [edx + 4*ecx]
|
||
|
|
mov word[edi], cx
|
||
|
|
shr ecx, 8
|
||
|
|
mov byte[edi + 2], ch
|
||
|
|
add edi, 3
|
||
|
|
sub ebx, 1
|
||
|
|
jnz @f
|
||
|
|
sub [height], 1
|
||
|
|
jnz .bpp1_to_bpp24.line
|
||
|
|
jmp .bpp1.done
|
||
|
|
@@:
|
||
|
|
sub ah, 1
|
||
|
|
jnz .bpp1_to_bpp24.bit
|
||
|
|
jmp .bpp1_to_bpp24.byte
|
||
|
|
.bpp1.done:
|
||
|
|
mov eax, [_dst]
|
||
|
|
jmp .quit
|
||
|
|
|
||
|
|
|
||
|
|
.bpp8a:
|
||
|
|
mov edx, img.convert.bpp8a.table
|
||
|
|
jmp .find_in_table_and_jump
|
||
|
|
.bpp8a_to_bpp1:
|
||
|
|
mov eax, [_dst]
|
||
|
|
mov eax, [eax + Image.Palette]
|
||
|
|
mov dword[eax], 0x00000000
|
||
|
|
mov dword[eax + 4], 0x00ffffff
|
||
|
|
mov edx, [ebx + Image.Height]
|
||
|
|
.bpp8a_to_bpp1.line:
|
||
|
|
mov ax, 0x0800
|
||
|
|
mov ecx, [ebx + Image.Width]
|
||
|
|
.bpp8a_to_bpp1.pixel:
|
||
|
|
shl al, 1
|
||
|
|
cmp byte[esi], 0x7f
|
||
|
|
cmc
|
||
|
|
adc eax, 0
|
||
|
|
add esi, 2
|
||
|
|
dec ah
|
||
|
|
jnz @f
|
||
|
|
mov byte[edi], al
|
||
|
|
add edi, 1
|
||
|
|
mov ax, 0x0800
|
||
|
|
@@:
|
||
|
|
dec ecx
|
||
|
|
jnz .bpp8a_to_bpp1.pixel
|
||
|
|
cmp ah, 8
|
||
|
|
je @f
|
||
|
|
mov cl, ah
|
||
|
|
shl al, cl
|
||
|
|
mov byte[edi], al
|
||
|
|
add edi, 1
|
||
|
|
@@:
|
||
|
|
dec edx
|
||
|
|
jnz .bpp8a_to_bpp1.line
|
||
|
|
mov eax, [_dst]
|
||
|
|
jmp .quit
|
||
|
|
|
||
|
|
.bpp8a_to_bpp24:
|
||
|
|
mov ecx, [ebx + Image.Width]
|
||
|
|
imul ecx, [ebx + Image.Height]
|
||
|
|
@@:
|
||
|
|
mov al, byte[esi]
|
||
|
|
mov byte[edi + 0], al
|
||
|
|
mov byte[edi + 1], al
|
||
|
|
mov byte[edi + 2], al
|
||
|
|
add esi, 2
|
||
|
|
add edi, 3
|
||
|
|
sub ecx, 1
|
||
|
|
jnz @b
|
||
|
|
mov eax, [_dst]
|
||
|
|
jmp .quit
|
||
|
|
|
||
|
|
|
||
|
|
.error:
|
||
|
|
xor eax, eax
|
||
|
|
.quit:
|
||
|
|
ret
|
||
|
|
endp
|
||
|
|
|
||
|
|
|
||
|
|
img.convert.bpp8i.table:
|
||
|
|
dd Image.bpp24, img.convert.bpp8i_to_bpp24
|
||
|
|
img.convert.bpp8g.table:
|
||
|
|
dd Image.bpp24, img.convert.bpp8g_to_bpp24
|
||
|
|
dd Image.bpp1, img.convert.bpp8g_to_bpp1
|
||
|
|
img.convert.bpp24.table:
|
||
|
|
dd Image.bpp24, img.convert.bpp24_to_bpp24
|
||
|
|
dd Image.bpp8g, img.convert.bpp24_to_bpp8g
|
||
|
|
img.convert.bpp32.table:
|
||
|
|
dd Image.bpp24, img.convert.bpp32_to_bpp24
|
||
|
|
img.convert.bpp15.table:
|
||
|
|
dd Image.bpp24, img.convert.bpp15_to_bpp24
|
||
|
|
img.convert.bpp16.table:
|
||
|
|
dd Image.bpp24, img.convert.bpp16_to_bpp24
|
||
|
|
img.convert.bpp1.table:
|
||
|
|
dd Image.bpp24, img.convert.bpp1_to_bpp24
|
||
|
|
img.convert.bpp8a.table:
|
||
|
|
dd Image.bpp24, img.convert.bpp8a_to_bpp24
|