1193 lines
24 KiB
NASM
1193 lines
24 KiB
NASM
;;================================================================================================;;
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;;//// tiff.asm //// (c) dunkaist, 2011-2012 /////////////////////////////////////////////////////;;
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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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include 'tiff.inc'
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;;================================================================================================;;
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proc img.is.tiff _data, _length ;/////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Determine if raw data could be decoded (is in tiff 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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push esi
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mov esi, [_data]
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lodsw
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cmp ax, word 'II'
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je .little_endian
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cmp ax, word 'MM'
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je .big_endian
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jmp .is_not_tiff
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.little_endian:
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lodsw
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cmp ax, 0x002A
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je .is_tiff
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jmp .is_not_tiff
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.big_endian:
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lodsw
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cmp ax, 0x2A00
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je .is_tiff
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.is_not_tiff:
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pop esi
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xor eax, eax
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ret
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.is_tiff:
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pop esi
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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.tiff _data, _length, _options ;///////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Decode data into image if it contains correctly formed raw data in tiff 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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_endianness rd 1 ; 0 stands for LE, otherwise BE
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retvalue rd 1 ; 0 (error) or pointer to image
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endl
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push ebx edx esi edi
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mov esi, [_data]
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lodsw
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mov [_endianness], 0
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cmp ax, word 'II'
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seta byte[_endianness]
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lodsw_
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lodsd_
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@@:
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stdcall tiff._.parse_IFD, [_data], eax, [_endianness]
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mov ebx, eax
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mov [retvalue], eax
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lodsd_
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test eax, eax
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; jnz @b
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.quit:
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mov eax, [retvalue]
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pop edi esi edx ebx
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ret
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endp
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;;================================================================================================;;
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proc img.encode.tiff _img, _p_length, _options ;//////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Encode image into raw data in tiff 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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proc tiff._.parse_IFD _data, _IFD, _endianness
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locals
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extended rd 1
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retvalue rd 1
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decompress rd 1
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endl
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push ebx edx edi
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mov [retvalue], 0
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invoke mem.alloc, sizeof.tiff_extra
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test eax, eax
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jz .quit
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mov [extended], eax
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mov ebx, eax
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mov edi, eax
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mov ecx, sizeof.tiff_extra/4
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xor eax, eax
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rep stosd
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mov esi, [_IFD]
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add esi, [_data]
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lodsw_
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movzx ecx, ax
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@@:
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push ecx
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stdcall tiff._.parse_IFDE, [_data], [_endianness]
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pop ecx
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dec ecx
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jnz @b
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call tiff._.define_image_type
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stdcall img.create, [ebx + tiff_extra.image_width], [ebx + tiff_extra.image_height], eax
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test eax, eax
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jz .quit
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mov [retvalue], eax
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mov edx, eax
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mov [edx + Image.Extended], ebx
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cmp [ebx+tiff_extra.compression], TIFF.COMPRESSION.UNCOMPRESSED
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jne @f
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mov [decompress], tiff._.decompress.uncompressed
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jmp .decompressor_defined
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@@:
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cmp [ebx + tiff_extra.compression], TIFF.COMPRESSION.PACKBITS
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jne @f
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mov [decompress], tiff._.decompress.packbits
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jmp .decompressor_defined
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@@:
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cmp [ebx + tiff_extra.compression], TIFF.COMPRESSION.LZW
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jne @f
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mov [decompress], tiff._.decompress.lzw
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jmp .decompressor_defined
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@@:
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cmp [ebx + tiff_extra.compression], TIFF.COMPRESSION.CCITT1D
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jne @f
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mov [decompress], tiff._.decompress.ccitt1d
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jmp .decompressor_defined
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@@:
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mov [decompress], 0
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jmp .quit
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.decompressor_defined:
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push esi ; fixme!!
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mov ecx, [edx + Image.Type]
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dec ecx
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jz .bpp8i
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dec ecx
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jz .bpp24
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dec ecx
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jz .bpp32
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dec ecx
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dec ecx ; tiff doesn't handle 15bpp images
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jz .bpp16
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dec ecx
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jz .bpp1
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dec ecx
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jz .bpp8g
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dec ecx
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jz .bpp8a
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;error report!!
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.bpp1:
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.bpp1.palette:
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mov edi, [edx+Image.Palette]
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cmp [ebx + tiff_extra.photometric], TIFF.PHOTOMETRIC.BLACK_IS_ZERO
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jne .bpp1.white_is_zero
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.bpp1.black_is_zero:
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mov [edi], dword 0x00000000
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mov [edi + 4], dword 0x00ffffff
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jmp .common
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.bpp1.white_is_zero:
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mov [edi], dword 0x00ffffff
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mov [edi + 4], dword 0x00000000
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jmp .common
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.bpp4:
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jmp .common
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.bpp8i:
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mov esi, [ebx + tiff_extra.palette]
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mov ah, 2
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.bpp8.channel:
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mov edi, eax
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and edi, 0x0000ff00
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shr edi, 8
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add edi, [edx + Image.Palette]
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mov ecx, 256
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@@:
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lodsb
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stosb
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lodsb
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add edi, 3
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dec ecx
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jnz @b
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dec ah
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jns .bpp8.channel
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jmp .common
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.bpp8g:
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jmp .common
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.bpp8a:
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jmp .common
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.bpp16:
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jmp .common
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.bpp24:
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jmp .common
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.bpp32:
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jmp .common
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.common:
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mov edi, [edx+Image.Data]
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mov esi, [ebx+tiff_extra.strip_offsets]
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mov edx, [ebx+tiff_extra.strip_byte_counts]
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cmp [ebx + tiff_extra.strip_offsets_length], TIFF.IFDE_TYPE_LENGTH.SHORT
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jne .l_x
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cmp [ebx + tiff_extra.strip_byte_counts_length], TIFF.IFDE_TYPE_LENGTH.SHORT
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jne .s_l
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jmp .s_s
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.l_x: cmp [ebx + tiff_extra.strip_byte_counts_length], TIFF.IFDE_TYPE_LENGTH.SHORT
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jne .l_l
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jmp .l_s
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.s_s:
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xor eax, eax
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lodsw_
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push esi
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mov esi, eax
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add esi, [_data]
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xor ecx, ecx
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mov cx, word[edx]
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test [_endianness], 1
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jz @f
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xchg cl, ch
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@@:
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add edx, 2
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stdcall [decompress], [retvalue]
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pop esi
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dec [ebx + tiff_extra.offsets_number]
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jnz .s_s
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jmp .decoded
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.s_l:
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xor eax, eax
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lodsw_
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push esi
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mov esi, eax
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add esi, [_data]
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mov ecx, [edx]
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test [_endianness], 1
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jz @f
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bswap ecx
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@@:
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add edx, 4
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stdcall [decompress], [retvalue]
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pop esi
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dec [ebx + tiff_extra.offsets_number]
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jnz .s_l
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jmp .decoded
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.l_s:
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lodsd_
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push esi
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mov esi, eax
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add esi, [_data]
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xor ecx, ecx
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mov cx, word[edx]
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test [_endianness], 1
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jz @f
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xchg cl, ch
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@@:
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add edx, 2
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stdcall [decompress], [retvalue]
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pop esi
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dec [ebx + tiff_extra.offsets_number]
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jnz .l_s
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jmp .decoded
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.l_l:
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lodsd_
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push esi
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mov esi, eax
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add esi, [_data]
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mov ecx, [edx]
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test [_endianness], 1
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jz @f
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bswap ecx
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@@:
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add edx, 4
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stdcall [decompress], [retvalue]
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pop esi
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dec [ebx + tiff_extra.offsets_number]
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jnz .l_l
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jmp .decoded
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.decoded:
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.post.rgb_bgr:
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cmp [ebx + tiff_extra.samples_per_pixel], 3
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jne .post.rgba_bgra
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mov eax, [retvalue]
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mov esi, [eax + Image.Data]
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mov edi, [eax + Image.Data]
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mov ecx, [eax + Image.Width]
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imul ecx, [eax + Image.Height]
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@@:
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lodsw
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movsb
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mov byte[esi - 1], al
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add edi, 2
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dec ecx
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jnz @b
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.post.rgba_bgra:
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cmp [ebx + tiff_extra.samples_per_pixel], 4
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jne .post.bpp8a_to_bpp8g
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mov eax, [retvalue]
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mov esi, [eax + Image.Data]
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mov edi, [eax + Image.Data]
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mov ecx, [eax + Image.Width]
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imul ecx, [eax + Image.Height]
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@@:
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lodsw
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movsb
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mov byte[esi - 1], al
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add edi, 3
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add esi, 1
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dec ecx
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jnz @b
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.post.bpp8a_to_bpp8g:
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mov eax, [retvalue]
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cmp [eax + Image.Type], Image.bpp8a
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jne .post.predictor
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mov ebx, [retvalue]
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stdcall tiff._.pack_8a, ebx
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mov [ebx + Image.Type], Image.bpp8g
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.post.predictor:
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cmp [ebx + tiff_extra.predictor], 2 ; Horizontal differencing
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jne .post.end
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cmp [ebx + tiff_extra.image_width], 1
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je .post.end
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push ebx
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mov edi, [ebx + tiff_extra.samples_per_pixel]
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mov edx, edi
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mov ebx, [retvalue]
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.post.predictor.plane:
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mov esi, [ebx + Image.Data]
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sub esi, 1
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add esi, edx
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mov ecx, [ebx + Image.Height]
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.post.predictor.line:
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push ecx
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mov ecx, [ebx + Image.Width]
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sub ecx, 1
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mov ah, byte[esi]
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add esi, edi
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@@:
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mov al, byte[esi]
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add al, ah
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mov byte[esi], al
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add esi, edi
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shl eax, 8
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dec ecx
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jnz @b
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pop ecx
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dec ecx
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jnz .post.predictor.line
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dec edx
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jnz .post.predictor.plane
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pop ebx
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.post.end:
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.pop_quit:
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pop esi
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.quit:
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pop edi edx ebx
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mov eax, [retvalue]
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ret
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endp
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proc tiff._.parse_IFDE _data, _endianness
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push ebx edx edi
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lodsw_
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mov edx, tiff.IFDE_tag_table.begin
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mov ecx, (tiff.IFDE_tag_table.end-tiff.IFDE_tag_table.begin)/8
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.tag:
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cmp ax, word[edx]
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jne @f
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lodsw_
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jmp dword[edx + 4]
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@@:
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add edx, 8
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dec ecx
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jnz .tag
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.tag_default: ; unknown/unsupported/unimportant
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lodsw
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lodsd
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lodsd
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jmp .quit ; just skip it
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.tag_100: ; ImageWidth
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cmp ax, TIFF.IFDE_TYPE.SHORT
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jne @f
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lodsd
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xor eax, eax
|
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lodsw_
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mov [ebx + tiff_extra.image_width], eax
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lodsw
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jmp .quit
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@@:
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cmp ax, TIFF.IFDE_TYPE.LONG
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jne @f
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lodsd
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lodsd_
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mov [ebx + tiff_extra.image_width], eax
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jmp .quit
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@@:
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jmp .quit
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.tag_101: ; ImageHeight
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cmp ax, TIFF.IFDE_TYPE.SHORT
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jne @f
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lodsd
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xor eax, eax
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lodsw_
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mov [ebx + tiff_extra.image_height], eax
|
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lodsw
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jmp .quit
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@@:
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cmp ax, TIFF.IFDE_TYPE.LONG
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jne @f
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lodsd
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lodsd_
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mov [ebx + tiff_extra.image_height], eax
|
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jmp .quit
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@@:
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jmp .quit
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.tag_102: ; BitsPerSample
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lodsd_
|
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imul eax, TIFF.IFDE_TYPE_LENGTH.SHORT
|
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cmp eax, 4
|
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ja @f
|
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xor eax, eax
|
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lodsw_
|
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mov [ebx + tiff_extra.bits_per_sample], eax
|
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lodsw
|
|
jmp .quit
|
|
@@:
|
|
lodsd_
|
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add eax, [_data]
|
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push esi
|
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mov esi, eax
|
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xor eax, eax
|
|
lodsw_
|
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pop esi
|
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mov [ebx + tiff_extra.bits_per_sample], eax
|
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jmp .quit
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|
|
.tag_103: ; Compression
|
|
cmp ax, TIFF.IFDE_TYPE.SHORT
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jne @f
|
|
lodsd
|
|
xor eax, eax
|
|
lodsw_
|
|
mov [ebx + tiff_extra.compression], eax
|
|
lodsw
|
|
jmp .quit
|
|
@@:
|
|
jmp .quit
|
|
|
|
.tag_106: ; PhotometricInterpretation
|
|
cmp ax, TIFF.IFDE_TYPE.SHORT
|
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jne @f
|
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lodsd
|
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xor eax, eax
|
|
lodsw_
|
|
mov [ebx + tiff_extra.photometric], eax
|
|
lodsw
|
|
jmp .quit
|
|
@@:
|
|
|
|
jmp .quit
|
|
|
|
.tag_111: ; StripOffsets
|
|
cmp ax, TIFF.IFDE_TYPE.SHORT
|
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jne @f
|
|
mov [ebx + tiff_extra.strip_offsets_length], TIFF.IFDE_TYPE_LENGTH.SHORT
|
|
jmp .tag_111.common
|
|
@@:
|
|
mov [ebx + tiff_extra.strip_offsets_length], TIFF.IFDE_TYPE_LENGTH.LONG
|
|
.tag_111.common:
|
|
lodsd_
|
|
mov [ebx + tiff_extra.offsets_number], eax
|
|
imul eax, [ebx+tiff_extra.strip_offsets_length]
|
|
cmp eax, 4
|
|
ja @f
|
|
mov [ebx + tiff_extra.strip_offsets], esi
|
|
lodsd
|
|
jmp .quit
|
|
@@:
|
|
lodsd_
|
|
add eax, [_data]
|
|
mov [ebx + tiff_extra.strip_offsets], eax
|
|
jmp .quit
|
|
|
|
.tag_115: ; SamplesPerPixel
|
|
lodsd_
|
|
imul eax, TIFF.IFDE_TYPE_LENGTH.SHORT
|
|
cmp eax, 4
|
|
ja @f
|
|
xor eax, eax
|
|
lodsw_
|
|
mov [ebx + tiff_extra.samples_per_pixel], eax
|
|
lodsw
|
|
jmp .quit
|
|
@@:
|
|
lodsd_
|
|
add eax, [_data]
|
|
movzx eax, word[eax]
|
|
jmp .quit
|
|
|
|
.tag_116: ; RowsPerStrip
|
|
cmp ax, TIFF.IFDE_TYPE.SHORT
|
|
jne @f
|
|
lodsd
|
|
xor eax, eax
|
|
lodsw_
|
|
mov [ebx + tiff_extra.rows_per_strip], eax
|
|
lodsw
|
|
jmp .quit
|
|
@@:
|
|
lodsd
|
|
lodsd_
|
|
mov [ebx + tiff_extra.rows_per_strip], eax
|
|
jmp .quit
|
|
|
|
.tag_117: ; StripByteCounts
|
|
cmp ax, TIFF.IFDE_TYPE.SHORT
|
|
jne @f
|
|
mov [ebx + tiff_extra.strip_byte_counts_length], TIFF.IFDE_TYPE_LENGTH.SHORT
|
|
jmp .tag_117.common
|
|
@@:
|
|
mov [ebx + tiff_extra.strip_byte_counts_length], TIFF.IFDE_TYPE_LENGTH.LONG
|
|
.tag_117.common:
|
|
lodsd_
|
|
imul eax, [ebx + tiff_extra.strip_byte_counts_length]
|
|
cmp eax, 4
|
|
ja @f
|
|
mov [ebx + tiff_extra.strip_byte_counts], esi
|
|
lodsd
|
|
jmp .quit
|
|
@@:
|
|
lodsd_
|
|
add eax, [_data]
|
|
mov [ebx + tiff_extra.strip_byte_counts], eax
|
|
jmp .quit
|
|
|
|
.tag_13d: ; Predictor
|
|
cmp ax, TIFF.IFDE_TYPE.SHORT
|
|
jne @f
|
|
lodsd
|
|
xor eax, eax
|
|
lodsw_
|
|
mov [ebx + tiff_extra.predictor], eax
|
|
lodsw
|
|
@@:
|
|
jmp .quit
|
|
|
|
.tag_140: ; ColorMap
|
|
lodsd
|
|
lodsd_
|
|
add eax, [_data]
|
|
mov [ebx + tiff_extra.palette], eax
|
|
jmp .quit
|
|
.tag_152: ; ExtraSamples
|
|
mov [ebx + tiff_extra.extra_samples], esi
|
|
mov ecx, [ebx + tiff_extra.extra_samples_number]
|
|
rep lodsw ; ignored
|
|
jmp .quit
|
|
|
|
.quit:
|
|
pop edi edx ebx
|
|
ret
|
|
endp
|
|
|
|
|
|
proc tiff._.define_image_type
|
|
|
|
xor eax, eax
|
|
|
|
cmp [ebx + tiff_extra.photometric], TIFF.PHOTOMETRIC.RGB
|
|
jne .not_full_color
|
|
mov eax, -3
|
|
add eax, [ebx + tiff_extra.samples_per_pixel]
|
|
mov [ebx + tiff_extra.extra_samples_number], eax
|
|
dec eax
|
|
jns @f
|
|
mov eax, Image.bpp24
|
|
jmp .quit
|
|
@@:
|
|
dec eax
|
|
jns @f
|
|
mov eax, Image.bpp32
|
|
; mov [ebx + tiff_extra.extra_samples_number], 0
|
|
jmp .quit
|
|
@@:
|
|
.not_full_color: ; grayscale, indexed, bilevel
|
|
cmp [ebx + tiff_extra.bits_per_sample], 1
|
|
jg .not_bilevel
|
|
mov eax, Image.bpp1
|
|
jmp .quit
|
|
.not_bilevel: ; grayscale, indexed
|
|
cmp [ebx + tiff_extra.palette], 0
|
|
je .without_palette
|
|
cmp [ebx + tiff_extra.bits_per_sample], 4
|
|
jne @f
|
|
; mov eax, Image.bpp4
|
|
jmp .quit
|
|
@@:
|
|
cmp [ebx + tiff_extra.bits_per_sample], 8
|
|
jne @f
|
|
mov eax, Image.bpp8i
|
|
jmp .quit
|
|
@@:
|
|
jmp .quit
|
|
.without_palette: ; grayscale
|
|
mov eax, -1
|
|
add eax, [ebx + tiff_extra.samples_per_pixel]
|
|
mov [ebx + tiff_extra.extra_samples_number], eax
|
|
dec eax
|
|
jns @f
|
|
mov eax, Image.bpp8g
|
|
jmp .quit
|
|
@@:
|
|
mov eax, Image.bpp8a
|
|
jmp .quit
|
|
.quit:
|
|
ret
|
|
endp
|
|
|
|
|
|
proc tiff._.decompress.uncompressed _image
|
|
|
|
rep movsb
|
|
ret
|
|
endp
|
|
|
|
|
|
proc tiff._.decompress.packbits _image
|
|
|
|
push ebx ecx edx esi
|
|
|
|
mov edx, ecx
|
|
|
|
.decode:
|
|
lodsb
|
|
dec edx
|
|
cmp al, 0x7f
|
|
jbe .different
|
|
cmp al, 0x80
|
|
jne .identical
|
|
test edx, edx
|
|
jz .quit
|
|
jmp .decode
|
|
|
|
.identical:
|
|
neg al
|
|
inc al
|
|
movzx ecx, al
|
|
dec edx
|
|
lodsb
|
|
rep stosb
|
|
test edx, edx
|
|
jnz .decode
|
|
jmp .quit
|
|
|
|
.different:
|
|
movzx ecx, al
|
|
inc ecx
|
|
sub edx, ecx
|
|
rep movsb
|
|
test edx, edx
|
|
jnz .decode
|
|
|
|
.quit:
|
|
pop esi edx ecx ebx
|
|
ret
|
|
endp
|
|
|
|
|
|
proc tiff._.decompress.ccitt1d _image
|
|
locals
|
|
current_tree rd 1
|
|
old_tree rd 1
|
|
width rd 1
|
|
height rd 1
|
|
width_left rd 1
|
|
is_makeup rd 1
|
|
endl
|
|
push ebx ecx edx esi
|
|
mov [is_makeup], 0
|
|
|
|
mov ebx, [_image]
|
|
push [ebx + Image.Height]
|
|
pop [height]
|
|
push [ebx + Image.Width]
|
|
pop [width]
|
|
|
|
mov edx, esi
|
|
.next_scanline:
|
|
push [width]
|
|
pop [width_left]
|
|
dec [height]
|
|
js .error
|
|
mov [current_tree], tiff._.huffman_tree_white.begin
|
|
mov [old_tree], tiff._.huffman_tree_black.begin
|
|
mov ebx, 0
|
|
mov ecx, 8
|
|
.next_run:
|
|
mov esi, [current_tree]
|
|
.branch:
|
|
lodsd
|
|
btr eax, 31
|
|
jnc .not_a_leaf
|
|
cmp eax, 63
|
|
seta byte[is_makeup]
|
|
ja @f
|
|
push [current_tree]
|
|
push [old_tree]
|
|
pop [current_tree]
|
|
pop [old_tree]
|
|
@@:
|
|
stdcall tiff._.write_run, [width_left], [current_tree]
|
|
mov [width_left], eax
|
|
test byte[is_makeup], 0x01
|
|
jnz .next_run
|
|
test eax, eax
|
|
jnz .next_run
|
|
jmp .next_scanline
|
|
.not_a_leaf:
|
|
test bh, bh
|
|
jnz @f
|
|
mov bl, byte[edx]
|
|
inc edx
|
|
mov bh, 8
|
|
@@:
|
|
test al, 0x02
|
|
jz .not_a_corner
|
|
dec bh
|
|
sal bl, 1
|
|
lahf
|
|
and ah, 0x03
|
|
cmp al, ah
|
|
jne .error
|
|
mov esi, [esi]
|
|
jmp .branch
|
|
.not_a_corner:
|
|
lodsd
|
|
dec bh
|
|
sal bl, 1
|
|
jc .branch
|
|
mov esi, eax
|
|
jmp .branch
|
|
.error:
|
|
.quit:
|
|
pop esi edx ecx ebx
|
|
ret
|
|
endp
|
|
|
|
|
|
proc tiff._.decompress.lzw _image
|
|
locals
|
|
cur_shift rd 1 ; 9 -- 12
|
|
shift_counter rd 1 ; how many shifts of current length remained
|
|
bits_left rd 1 ; in current byte ( pointed to by [esi] )
|
|
table rd 1
|
|
table_size rd 1 ; the number of entries
|
|
old_code rd 1
|
|
next_table_entry rd 1 ; where to place new entry
|
|
endl
|
|
push ebx ecx edx esi
|
|
|
|
mov [table], 0
|
|
mov [bits_left], 8
|
|
mov [cur_shift], 9
|
|
|
|
.begin:
|
|
|
|
; .getnextcode:
|
|
xor eax, eax
|
|
mov edx, [cur_shift]
|
|
|
|
lodsb
|
|
mov ecx, [bits_left]
|
|
mov ch, cl
|
|
neg cl
|
|
add cl, 8
|
|
shl al, cl
|
|
mov cl, ch
|
|
shl eax, cl
|
|
sub edx, [bits_left]
|
|
; second_byte
|
|
cmp edx, 8
|
|
je .enough_zero
|
|
jb .enough_nonzero
|
|
sub edx, 8
|
|
lodsb
|
|
shl eax, 8
|
|
jmp .third_byte
|
|
.enough_zero:
|
|
mov [bits_left], 8
|
|
lodsb
|
|
jmp .code_done
|
|
.enough_nonzero:
|
|
mov al, byte[esi]
|
|
neg edx
|
|
add edx, 8
|
|
mov ecx, edx
|
|
mov [bits_left], edx
|
|
shr eax, cl
|
|
jmp .code_done
|
|
.third_byte:
|
|
mov al, byte[esi]
|
|
neg edx
|
|
add edx, 8
|
|
mov ecx, edx
|
|
mov [bits_left], edx
|
|
shr eax, cl
|
|
.code_done:
|
|
|
|
|
|
mov ebx, eax
|
|
cmp ebx, 0x101 ; end of information
|
|
je .quit
|
|
cmp ebx, 0x100 ; clear code
|
|
jne .no_clear_code
|
|
|
|
cmp [table], 0
|
|
jne @f
|
|
invoke mem.alloc, 256 + 63488 ; 256 + (2^8 + 2^9 + 2^10 + 2^11 + 2^12)*(4+4)
|
|
test eax, eax
|
|
jz .quit
|
|
mov [table], eax
|
|
@@:
|
|
mov eax, [table]
|
|
mov [next_table_entry], eax
|
|
add [next_table_entry], 256 + (256*8) + 2*8
|
|
mov [cur_shift], 9
|
|
mov [shift_counter], 256-3 ; clear code, end of information, why -3?
|
|
mov [table_size], 257
|
|
|
|
push edi
|
|
mov ecx, 256
|
|
mov edi, [table]
|
|
mov ebx, edi
|
|
add edi, 256
|
|
mov eax, 0
|
|
@@:
|
|
mov byte[ebx], al
|
|
mov [edi], ebx
|
|
add edi, 4
|
|
add ebx, 1
|
|
add eax, 1
|
|
mov [edi], dword 1
|
|
add edi, 4
|
|
dec ecx
|
|
jnz @b
|
|
pop edi
|
|
; .getnextcode:
|
|
xor eax, eax
|
|
mov edx, [cur_shift]
|
|
|
|
lodsb
|
|
mov ecx, [bits_left]
|
|
mov ch, cl
|
|
neg cl
|
|
add cl, 8
|
|
shl al, cl
|
|
mov cl, ch
|
|
shl eax, cl
|
|
sub edx, [bits_left]
|
|
; second_byte
|
|
cmp edx, 8
|
|
je .enough_zero2
|
|
jb .enough_nonzero2
|
|
sub edx, 8
|
|
lodsb
|
|
shl eax, 8
|
|
jmp .third_byte2
|
|
.enough_zero2:
|
|
mov [bits_left], 8
|
|
lodsb
|
|
jmp .code_done2
|
|
.enough_nonzero2:
|
|
mov al, byte[esi]
|
|
neg edx
|
|
add edx, 8
|
|
mov ecx, edx
|
|
mov [bits_left], edx
|
|
shr eax, cl
|
|
jmp .code_done2
|
|
.third_byte2:
|
|
mov al, byte[esi]
|
|
neg edx
|
|
add edx, 8
|
|
mov ecx, edx
|
|
mov [bits_left], edx
|
|
shr eax, cl
|
|
.code_done2:
|
|
|
|
|
|
mov [old_code], eax
|
|
cmp eax, 0x101 ; end of information
|
|
je .quit
|
|
|
|
push esi
|
|
mov esi, [table]
|
|
lea esi, [esi + eax*8 + 256]
|
|
mov ecx, dword[esi+4]
|
|
|
|
mov edx, [next_table_entry]
|
|
mov [edx], edi
|
|
lea eax, [ecx + 1]
|
|
mov [edx + 4], eax
|
|
add [next_table_entry], 8
|
|
|
|
mov esi, [esi]
|
|
rep movsb
|
|
pop esi
|
|
jmp .begin
|
|
.no_clear_code:
|
|
cmp eax, [table_size]
|
|
ja .not_in_table
|
|
mov [old_code], eax
|
|
push esi
|
|
mov esi, [table]
|
|
lea esi, [esi + eax*8 + 256]
|
|
mov ecx, dword[esi + 4]
|
|
|
|
mov edx, [next_table_entry]
|
|
mov [edx], edi
|
|
lea eax, [ecx + 1]
|
|
mov [edx + 4], eax
|
|
add [next_table_entry], 8
|
|
add [table_size], 1
|
|
|
|
mov esi, [esi]
|
|
rep movsb
|
|
pop esi
|
|
|
|
dec [shift_counter]
|
|
jnz @f
|
|
mov ecx, [cur_shift]
|
|
add [cur_shift], 1
|
|
mov edx, 1
|
|
shl edx, cl
|
|
mov [shift_counter], edx
|
|
@@:
|
|
jmp .begin
|
|
|
|
.not_in_table:
|
|
xchg eax, [old_code]
|
|
push esi
|
|
mov esi, [table]
|
|
lea esi, [esi + eax*8 + 256]
|
|
mov ecx, dword[esi+4]
|
|
|
|
mov edx, [next_table_entry]
|
|
mov [edx], edi
|
|
lea eax, [ecx + 2]
|
|
mov [edx + 4], eax
|
|
add [next_table_entry], 8
|
|
add [table_size], 1
|
|
|
|
mov esi, [esi]
|
|
mov al, [esi]
|
|
rep movsb
|
|
mov byte[edi], al
|
|
add edi, 1
|
|
pop esi
|
|
|
|
dec [shift_counter]
|
|
jnz @f
|
|
mov ecx, [cur_shift]
|
|
add [cur_shift], 1
|
|
mov edx, 1
|
|
shl edx, cl
|
|
mov [shift_counter], edx
|
|
@@:
|
|
jmp .begin
|
|
|
|
.quit:
|
|
cmp [table], 0
|
|
je @f
|
|
invoke mem.free, [table]
|
|
@@:
|
|
pop esi edx ecx ebx
|
|
ret
|
|
endp
|
|
|
|
|
|
proc tiff._.write_run _width_left, _current_tree
|
|
|
|
push ebx
|
|
|
|
test eax, eax
|
|
jz .done
|
|
sub [_width_left], eax
|
|
js .error
|
|
cmp esi, tiff._.huffman_tree_black.begin
|
|
seta bh
|
|
|
|
cmp ecx, eax
|
|
ja .one_byte
|
|
.many_bytes:
|
|
mov bl, [edi]
|
|
@@:
|
|
shl bl, 1
|
|
or bl, bh
|
|
dec eax
|
|
dec ecx
|
|
jnz @b
|
|
mov [edi], bl
|
|
inc edi
|
|
mov ecx, eax
|
|
and eax, 0x07
|
|
shr ecx, 3
|
|
|
|
push eax
|
|
xor eax, eax
|
|
test bh, bh
|
|
jz @f
|
|
dec al
|
|
@@:
|
|
rep stosb
|
|
pop eax
|
|
|
|
mov ecx, 8
|
|
test eax, eax
|
|
jz .done
|
|
|
|
.one_byte:
|
|
mov bl, [edi]
|
|
@@:
|
|
shl bl, 1
|
|
or bl, bh
|
|
dec ecx
|
|
dec eax
|
|
jnz @b
|
|
mov byte[edi], bl
|
|
|
|
cmp [_width_left], 0
|
|
jne .done
|
|
mov bl, [edi]
|
|
shl bl, cl
|
|
mov byte[edi], bl
|
|
inc edi
|
|
.done:
|
|
mov eax, [_width_left]
|
|
jmp .quit
|
|
.error:
|
|
.quit:
|
|
pop ebx
|
|
ret
|
|
endp
|
|
|
|
|
|
proc tiff._.get_word _endianness
|
|
|
|
lodsw
|
|
test [_endianness], 1
|
|
jnz @f
|
|
ret
|
|
@@:
|
|
xchg al, ah
|
|
ret
|
|
endp
|
|
|
|
|
|
proc tiff._.get_dword _endianness
|
|
|
|
lodsd
|
|
test [_endianness], 1
|
|
jnz @f
|
|
ret
|
|
@@:
|
|
bswap eax
|
|
ret
|
|
|
|
ret
|
|
endp
|
|
|
|
|
|
proc tiff._.pack_8a _img
|
|
mov ebx, [_img]
|
|
mov esi, [ebx + Image.Data]
|
|
mov edi, esi
|
|
mov ecx, [ebx + Image.Width]
|
|
imul ecx, [ebx + Image.Height]
|
|
@@:
|
|
lodsw
|
|
stosb
|
|
dec ecx
|
|
jnz @b
|
|
ret
|
|
endp
|
|
|
|
;;================================================================================================;;
|
|
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
|
|
;;================================================================================================;;
|
|
;! Below is private data you should never use directly from your code ;;
|
|
;;================================================================================================;;
|
|
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
|
|
;;================================================================================================;;
|
|
tiff.IFDE_tag_table.begin:
|
|
.tag_100: dd 0x0100, tiff._.parse_IFDE.tag_100 ; image width
|
|
.tag_101: dd 0x0101, tiff._.parse_IFDE.tag_101 ; image height (this is called 'length' in spec)
|
|
.tag_102: dd 0x0102, tiff._.parse_IFDE.tag_102 ; bits per sample
|
|
.tag_103: dd 0x0103, tiff._.parse_IFDE.tag_103 ; compression
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.tag_106: dd 0x0106, tiff._.parse_IFDE.tag_106 ; photometric interpretation
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.tag_111: dd 0x0111, tiff._.parse_IFDE.tag_111 ; strip offsets
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.tag_115: dd 0x0115, tiff._.parse_IFDE.tag_115 ; samples per pixel
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.tag_116: dd 0x0116, tiff._.parse_IFDE.tag_116 ; rows per strip
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.tag_117: dd 0x0117, tiff._.parse_IFDE.tag_117 ; strip byte counts
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.tag_13d: dd 0x013d, tiff._.parse_IFDE.tag_13d ; predictor
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.tag_140: dd 0x0140, tiff._.parse_IFDE.tag_140 ; color map
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.tag_152: dd 0x0152, tiff._.parse_IFDE.tag_152 ; extra samples
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tiff.IFDE_tag_table.end:
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include 'huffman.asm' ; huffman trees for ccitt1d compression method
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