forked from KolibriOS/kolibrios
720 lines
22 KiB
NASM
720 lines
22 KiB
NASM
;;================================================================================================;;
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;;//// bmp.asm //// (c) mike.dld, 2007-2008 //////////////////////////////////////////////////////;;
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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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;; General Public License as published by the Free Software Foundation, either version 3 of the ;;
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;; 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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;; General Public License for more details. ;;
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;; ;;
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;; You should have received a copy of the GNU General Public License along with Libs-Dev. If not, ;;
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;; see <http://www.gnu.org/licenses/>. ;;
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;; ;;
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;;================================================================================================;;
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;; ;;
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;; References: ;;
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;; 1. "Microsoft Windows Bitmap File Format Summary" ;;
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;; from "Encyclopedia of Graphics File Formats" by O'Reilly ;;
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;; http://www.fileformat.info/format/bmp/ ;;
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;; ;;
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;;================================================================================================;;
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include 'bmp.inc'
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;;================================================================================================;;
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proc img.is.bmp _data, _length ;//////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Determine if raw data could be decoded (is in BMP format) ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _data = raw data as read from file/stream ;;
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;> _length = data length ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = false / true ;;
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;;================================================================================================;;
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cmp [_length], 2
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jb .nope
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mov eax, [_data]
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cmp word[eax], 'BM'
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je .yep
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.nope:
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xor eax, eax
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ret
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.yep:
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xor eax,eax
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inc eax
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ret
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endp
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;;================================================================================================;;
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proc img.decode.bmp _data, _length ;//////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Decode data into image if it contains correctly formed raw data in BMP format ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _data = raw data as read from file/stream ;;
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;> _length = data length ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 (error) or pointer to image ;;
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;;================================================================================================;;
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locals
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img dd ?
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endl
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push ebx
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stdcall img.is.bmp, [_data], [_length]
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or eax, eax
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jz .error
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mov ebx, [_data]
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; cmp [ebx + bmp.Header.info.Compression], bmp.BI_RGB
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; je @f
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; mov eax, [ebx + bmp.Header.file.Size]
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; cmp eax, [_length]
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; jne .error
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@@: stdcall img.create, [ebx + bmp.Header.info.Width], [ebx + bmp.Header.info.Height]
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or eax, eax
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jz .error
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mov [img], eax
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mov edx, eax
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invoke mem.alloc, sizeof.bmp.Image
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or eax, eax
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jz .error
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mov [edx + Image.Extended], eax
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mov esi, ebx
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add esi, sizeof.bmp.FileHeader
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mov edi, eax
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mov ecx, sizeof.bmp.InfoHeader
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rep movsb
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mov eax, [ebx + bmp.Header.info.Compression]
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cmp eax, bmp.BI_RGB
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jne @f
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stdcall ._.rgb
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jmp .decoded
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@@: cmp eax, bmp.BI_RLE8
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jne @f
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stdcall ._.rle
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jmp .decoded
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@@: cmp eax, bmp.BI_RLE4
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jne @f
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stdcall ._.rle
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jmp .decoded
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@@: cmp eax, bmp.BI_BITFIELDS
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jne @f
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stdcall ._.bitfields
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jmp .decoded
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@@: cmp eax, bmp.BI_JPEG
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jne @f
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stdcall ._.jpeg
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jmp .decoded
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@@: cmp eax, bmp.BI_PNG
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jne .error
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stdcall ._.png
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.decoded:
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or eax, eax
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jz @f
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stdcall img.destroy, [img]
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jmp .error
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@@: stdcall img.flip, [img], FLIP_VERTICAL
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mov eax, [img]
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ret
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.error:
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xor eax, eax
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pop ebx
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ret
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endp
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;;================================================================================================;;
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proc img.encode.bmp _img, _p_length ;/////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Encode image into raw data in BMP format ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _img = pointer to image ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 (error) or pointer to encoded data ;;
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;< _p_length = encoded data length ;;
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;;================================================================================================;;
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xor eax, eax
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ret
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endp
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;;================================================================================================;;
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;;////////////////////////////////////////////////////////////////////////////////////////////////;;
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;;================================================================================================;;
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;! Below are private procs you should never call directly from your code ;;
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;;================================================================================================;;
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;;////////////////////////////////////////////////////////////////////////////////////////////////;;
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;;================================================================================================;;
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;;================================================================================================;;
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proc img.decode.bmp._.rgb ;///////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> ebx = raw image data ;;
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;> edx = image data ;;
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;;------------------------------------------------------------------------------------------------;;
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;< --- TBD --- ;;
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;;================================================================================================;;
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mov ecx, [edx + Image.Extended]
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mov [ecx + bmp.Image.info.AlphaMask], 0
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mov edi, [edx + Image.Data]
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movzx eax, [ebx + bmp.Header.info.BitCount]
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cmp eax, 32
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je .32bpp
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cmp eax, 24
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je .24bpp
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cmp eax, 16
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je .16bpp
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cmp eax, 8
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je .8bpp
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cmp eax, 4
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je .4bpp
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cmp eax, 1
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je .1bpp
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jmp .error
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;;------------------------------------------------------------------------------------------------;;
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img.decode.bmp._.rgb.32bpp:
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mov [ecx + bmp.Image.info.RedMask], 00000000111111110000000000000000b ; 8-0-0
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mov [ecx + bmp.Image.info.GreenMask], 00000000000000001111111100000000b ; 0-8-0
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mov [ecx + bmp.Image.info.BlueMask], 00000000000000000000000011111111b ; 0-0-8
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stdcall img.decode.bmp._.bitfields
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ret
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;;------------------------------------------------------------------------------------------------;;
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img.decode.bmp._.rgb.24bpp:
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mov esi, ebx
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add esi, [ebx + bmp.Header.file.OffBits]
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mov ecx, [ebx + bmp.Header.info.Height]
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.next_line:
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push ecx
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mov ecx, [ebx + bmp.Header.info.Width]
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xor edx, edx
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.next_line_pixel:
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movsd
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dec esi
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inc edx
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dec ecx
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jnz .next_line_pixel
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and edx, 0x03
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add esi, edx
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pop ecx
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dec ecx
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jnz .next_line
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jmp img.decode.bmp._.rgb.exit
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;;------------------------------------------------------------------------------------------------;;
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img.decode.bmp._.rgb.16bpp:
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mov [ecx + bmp.Image.info.RedMask], 00000000000000000111110000000000b ; 5-0-0
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mov [ecx + bmp.Image.info.GreenMask], 00000000000000000000001111100000b ; 0-5-0
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mov [ecx + bmp.Image.info.BlueMask], 00000000000000000000000000011111b ; 0-0-5
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stdcall img.decode.bmp._.bitfields
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ret
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;;------------------------------------------------------------------------------------------------;;
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img.decode.bmp._.rgb.8bpp:
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mov esi, ebx
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add esi, [ebx + bmp.Header.file.OffBits]
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mov ecx, [ebx + bmp.Header.info.Height]
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.next_line:
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push ecx
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mov ecx, [ebx + bmp.Header.info.Width]
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.next_line_dword:
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lodsb
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and eax, 0x000000FF
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mov eax, [ebx + eax * 4 + bmp.Header.info.Palette]
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stosd
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dec ecx
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jnz .next_line_dword
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pop ecx
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dec ecx
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jnz .next_line
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jmp img.decode.bmp._.rgb.exit
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;;------------------------------------------------------------------------------------------------;;
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img.decode.bmp._.rgb.4bpp:
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mov esi, ebx
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add esi, [ebx + bmp.Header.file.OffBits]
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mov ecx, [ebx + bmp.Header.info.Height]
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.next_line:
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push ecx
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mov ecx, [ebx + bmp.Header.info.Width]
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.next_line_dword:
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push ecx
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lodsd
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bswap eax
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xchg edx, eax
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mov ecx, 32 / 4
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.next_pixel:
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rol edx, 4
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mov al, dl
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and eax, 0x0000000F
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mov eax, [ebx + eax * 4 + bmp.Header.info.Palette]
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stosd
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dec dword[esp]
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jz @f
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dec ecx
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jnz .next_pixel
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@@: pop ecx
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or ecx, ecx
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jnz .next_line_dword
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pop ecx
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dec ecx
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jnz .next_line
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jmp img.decode.bmp._.rgb.exit
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;;------------------------------------------------------------------------------------------------;;
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img.decode.bmp._.rgb.1bpp:
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mov esi, ebx
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add esi, [ebx + bmp.Header.file.OffBits]
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mov ecx, [ebx + bmp.Header.info.Height]
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.next_line:
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push ecx
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mov ecx, [ebx + bmp.Header.info.Width]
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.next_line_dword:
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push ecx
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lodsd
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bswap eax
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xchg edx, eax
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mov ecx, 32 / 1
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.next_pixel:
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rol edx, 1
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mov al, dl
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and eax, 0x00000001
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mov eax, [ebx + eax * 4 + bmp.Header.info.Palette]
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stosd
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dec dword[esp]
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jz @f
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dec ecx
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jnz .next_pixel
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@@: pop ecx
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or ecx, ecx
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jnz .next_line_dword
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pop ecx
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dec ecx
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jnz .next_line
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jmp img.decode.bmp._.rgb.exit
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;;------------------------------------------------------------------------------------------------;;
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img.decode.bmp._.rgb.exit:
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xor eax, eax
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ret
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img.decode.bmp._.rgb.error:
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or eax, -1
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ret
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endp
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;;================================================================================================;;
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proc img.decode.bmp._.rle ;///////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> ebx = raw image data ;;
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;> edx = image data ;;
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;;------------------------------------------------------------------------------------------------;;
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;< --- TBD --- ;;
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;;================================================================================================;;
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locals
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scanline_len dd ?
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marker_x dd ?
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marker_y dd ?
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abs_mode_addr dd ?
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enc_mode_addr dd ?
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endl
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mov edi, [edx + Image.Data]
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mov [abs_mode_addr], .absolute_mode.rle8
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mov [enc_mode_addr], .encoded_mode.rle8
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cmp [ebx + bmp.Header.info.Compression], bmp.BI_RLE4
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jne @f
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mov [abs_mode_addr], .absolute_mode.rle4
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mov [enc_mode_addr], .encoded_mode.rle4
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@@: mov esi, ebx
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add esi, [ebx + bmp.Header.file.OffBits]
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mov eax, [edx + Image.Width]
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shl eax, 2
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mov [scanline_len], eax
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xor eax, eax
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mov [marker_x], eax
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mov [marker_y], eax
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.next_run:
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xor eax, eax
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lodsb
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or al, al
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jz .escape_mode
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jmp [enc_mode_addr]
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.escape_mode:
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lodsb
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cmp al, 0
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je .end_of_scanline
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cmp al, 1
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je .exit
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cmp al, 2
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je .offset_marker
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jmp [abs_mode_addr]
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.end_of_scanline: ; 0
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mov eax, [marker_x]
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shl eax, 2
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neg eax
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add eax, [scanline_len]
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add edi, eax
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mov [marker_x], 0
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inc [marker_y]
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jmp .next_run
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.offset_marker: ; 2: dx, dy
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lodsb
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mov edx, [marker_x]
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add edx, eax
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cmp edx, [ebx + bmp.Header.info.Width]
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jae .exit
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mov [marker_x], edx
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shl eax, 2
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add edi, eax
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lodsb
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and eax, 0x0FF
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mov edx, [marker_y]
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add edx, eax
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cmp edx, [ebx + bmp.Header.info.Height]
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jae .exit
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mov [marker_y], edx
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imul eax, [scanline_len]
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add edi, eax
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jmp .next_run
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.encoded_mode.rle8: ; N: b1 * N
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mov edx, eax
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lodsb
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mov eax, [ebx + eax * 4 + bmp.Header.info.Palette]
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@@: dec edx
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js .fix_marker
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stosd
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inc [marker_x]
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jmp @b
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.absolute_mode.rle8: ; N: b1 .. bN
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mov edx, eax
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push eax
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@@: dec edx
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js @f
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lodsb
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and eax, 0x0FF
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mov eax, [ebx + eax * 4 + bmp.Header.info.Palette]
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stosd
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inc [marker_x]
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jmp @b
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@@: pop eax
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test eax, 1
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jz .fix_marker
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inc esi
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jmp .fix_marker
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.encoded_mode.rle4: ; N: b1 * N
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mov edx, eax
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lodsb
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mov ecx, eax
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shr ecx, 4
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mov ecx, [ebx + ecx * 4 + bmp.Header.info.Palette]
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and eax, 0x00F
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mov eax, [ebx + eax * 4 + bmp.Header.info.Palette]
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@@: dec edx
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js .fix_marker
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test edx, 1
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jz .odd
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mov [edi], ecx
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add edi, 4
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inc [marker_x]
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jmp @b
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.odd:
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stosd
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inc [marker_x]
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jmp @b
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.absolute_mode.rle4: ; N: b1 .. bN
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mov edx, eax
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push eax
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@@: dec edx
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js @f
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lodsb
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and eax, 0x0FF
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mov ecx, eax
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shr eax, 4
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mov eax, [ebx + eax * 4 + bmp.Header.info.Palette]
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stosd
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inc [marker_x]
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dec edx
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js @f
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mov eax, ecx
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and eax, 0x00F
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mov eax, [ebx + eax * 4 + bmp.Header.info.Palette]
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stosd
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inc [marker_x]
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jmp @b
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@@: pop eax
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and eax, 0x03
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jz .fix_marker
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cmp eax, 3
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je .fix_marker
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inc esi
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jmp .fix_marker
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.fix_marker:
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mov eax, [marker_x]
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@@: sub eax, [ebx + bmp.Header.info.Width]
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jle .next_run
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mov [marker_x], eax
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inc [marker_y]
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jmp @b
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.exit:
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xor eax, eax
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ret
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.error:
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or eax, -1
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ret
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endp
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;;================================================================================================;;
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proc img.decode.bmp._.bitfields ;/////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> ebx = raw image data ;;
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;> edx = image data ;;
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;;------------------------------------------------------------------------------------------------;;
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;< --- TBD --- ;;
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;;================================================================================================;;
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locals
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shift bmp.RgbByteQuad
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unshift bmp.RgbByteQuad
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mask bmp.RgbQuad
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delta dd ?
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endl
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push esi edi
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mov esi, [edx + Image.Extended]
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mov ecx, [esi + bmp.Image.info.RedMask]
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call .calc_shift
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mov [shift.Red], al
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mov [mask.Red], ecx
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call .calc_unshift
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mov [unshift.Red], al
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mov ecx, [esi + bmp.Image.info.GreenMask]
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call .calc_shift
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mov [shift.Green], al
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mov [unshift.Green], al
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mov [mask.Green], ecx
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call .calc_unshift
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mov [unshift.Green], al
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mov ecx, [esi + bmp.Image.info.BlueMask]
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call .calc_shift
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mov [shift.Blue], al
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mov [unshift.Blue], al
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mov [mask.Blue], ecx
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call .calc_unshift
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mov [unshift.Blue], al
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mov ecx, [esi + bmp.Image.info.AlphaMask]
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|
call .calc_shift
|
|
mov [shift.Alpha], al
|
|
mov [unshift.Alpha], al
|
|
mov [mask.Alpha], ecx
|
|
call .calc_unshift
|
|
mov [unshift.Alpha], al
|
|
|
|
mov edi, [edx + Image.Data]
|
|
mov esi, ebx
|
|
add esi, [ebx + bmp.Header.file.OffBits]
|
|
|
|
mov [delta], 4
|
|
movzx eax, [ebx + bmp.Header.info.BitCount]
|
|
cmp eax, 32
|
|
je @f
|
|
cmp eax, 16
|
|
jne .error
|
|
mov [delta], 2
|
|
|
|
;;------------------------------------------------------------------------------------------------;;
|
|
|
|
@@: mov ecx, [edx + Image.Height]
|
|
|
|
.next_line:
|
|
push ecx
|
|
mov ecx, [edx + Image.Width]
|
|
|
|
.next_pixel:
|
|
push ecx
|
|
|
|
mov eax, [esi]
|
|
mov cl, [shift.Blue]
|
|
shr eax, cl
|
|
and eax, [mask.Blue]
|
|
mov cl, [unshift.Blue]
|
|
shl eax, cl
|
|
stosb
|
|
|
|
mov eax, [esi]
|
|
mov cl, [shift.Green]
|
|
shr eax, cl
|
|
and eax, [mask.Green]
|
|
mov cl, [unshift.Green]
|
|
shl eax, cl
|
|
stosb
|
|
|
|
mov eax, [esi]
|
|
mov cl, [shift.Red]
|
|
shr eax, cl
|
|
and eax, [mask.Red]
|
|
mov cl, [unshift.Red]
|
|
shl eax, cl
|
|
stosb
|
|
|
|
mov eax, [esi]
|
|
mov cl, [shift.Alpha]
|
|
shr eax, cl
|
|
and eax, [mask.Alpha]
|
|
mov cl, [unshift.Alpha]
|
|
shl eax, cl
|
|
stosb
|
|
|
|
add esi, [delta]
|
|
|
|
pop ecx
|
|
dec ecx
|
|
jnz .next_pixel
|
|
|
|
pop ecx
|
|
dec ecx
|
|
jnz .next_line
|
|
|
|
;;------------------------------------------------------------------------------------------------;;
|
|
|
|
.exit:
|
|
xor eax, eax
|
|
pop edi esi
|
|
ret
|
|
|
|
.error:
|
|
or eax, -1
|
|
pop edi esi
|
|
ret
|
|
|
|
.calc_shift:
|
|
xor eax, eax
|
|
or ecx, ecx
|
|
jnz @f
|
|
retn
|
|
@@: test ecx, 1
|
|
jnz @f
|
|
.zz: shr ecx, 1
|
|
inc eax
|
|
jmp @b
|
|
@@: test ecx, 0100000000b
|
|
jnz .zz
|
|
retn
|
|
.calc_unshift:
|
|
xor eax, eax
|
|
or ecx, ecx
|
|
jnz @f
|
|
retn
|
|
@@: test ecx, 1
|
|
jz @f
|
|
shr ecx, 1
|
|
inc eax
|
|
jmp @b
|
|
@@: sub eax, 8
|
|
neg eax
|
|
retn
|
|
endp
|
|
|
|
;;================================================================================================;;
|
|
proc img.decode.bmp._.jpeg ;//////////////////////////////////////////////////////////////////////;;
|
|
;;------------------------------------------------------------------------------------------------;;
|
|
;? --- TBD --- ;;
|
|
;;------------------------------------------------------------------------------------------------;;
|
|
;> ebx = raw image data ;;
|
|
;> edx = image data ;;
|
|
;;------------------------------------------------------------------------------------------------;;
|
|
;< --- TBD --- ;;
|
|
;;================================================================================================;;
|
|
xor eax, eax
|
|
ret
|
|
endp
|
|
|
|
;;================================================================================================;;
|
|
proc img.decode.bmp._.png ;///////////////////////////////////////////////////////////////////////;;
|
|
;;------------------------------------------------------------------------------------------------;;
|
|
;? --- TBD --- ;;
|
|
;;------------------------------------------------------------------------------------------------;;
|
|
;> ebx = raw image data ;;
|
|
;> edx = image data ;;
|
|
;;------------------------------------------------------------------------------------------------;;
|
|
;< --- TBD --- ;;
|
|
;;================================================================================================;;
|
|
xor eax, eax
|
|
ret
|
|
endp
|
|
|
|
|
|
;;================================================================================================;;
|
|
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
|
|
;;================================================================================================;;
|
|
;! Below is private data you should never use directly from your code ;;
|
|
;;================================================================================================;;
|
|
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
|
|
;;================================================================================================;;
|
|
|
|
|
|
;
|