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dunkaist |
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;;================================================================================================;; |
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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 . ;; |
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;; ;; |
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;;================================================================================================;; |
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include 'tiff.inc' |
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;include '../../../../../system/board/trunk/debug.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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168 |
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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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mov [decompress], tiff._.decompress.ccitt1d |
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jmp .decompressor_defined |
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jmp .quit |
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.decompressor_defined: |
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183 |
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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 .bpp8 |
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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 .bpp4 |
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;error report!! |
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201 |
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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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.bpp8: |
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cmp [ebx + tiff_extra.palette], 0 |
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je .bpp8.grayscale |
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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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.bpp8.grayscale: |
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mov edi, [edx + Image.Palette] |
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mov eax, 0xff000000 |
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@@: |
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stosd |
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add eax, 0x00010101 |
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jnc @b |
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jmp .common |
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249 |
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.bpp16: |
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jmp .common |
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252 |
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.bpp24: |
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jmp .common |
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255 |
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.bpp32: |
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jmp .common |
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258 |
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259 |
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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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264 |
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265 |
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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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273 |
jmp .l_s |
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274 |
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.s_s: |
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xor eax, eax |
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lodsw_ |
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278 |
push esi |
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279 |
mov esi, eax |
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add esi, [_data] |
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281 |
xor ecx, ecx |
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282 |
mov cx, word[edx] |
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283 |
test [_endianness], 1 |
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284 |
jz @f |
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285 |
xchg cl, ch |
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@@: |
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287 |
add edx, 2 |
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288 |
stdcall [decompress], [retvalue] |
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289 |
pop esi |
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290 |
dec [ebx + tiff_extra.offsets_number] |
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291 |
jnz .s_s |
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292 |
jmp .decoded |
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293 |
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294 |
.s_l: |
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295 |
xor eax, eax |
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296 |
lodsw_ |
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297 |
push esi |
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298 |
mov esi, eax |
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299 |
add esi, [_data] |
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300 |
mov ecx, [edx] |
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301 |
test [_endianness], 1 |
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302 |
jz @f |
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303 |
bswap ecx |
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304 |
@@: |
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305 |
add edx, 4 |
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306 |
stdcall [decompress], [retvalue] |
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307 |
pop esi |
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308 |
dec [ebx + tiff_extra.offsets_number] |
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309 |
jnz .s_l |
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310 |
jmp .decoded |
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311 |
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312 |
.l_s: |
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313 |
lodsd_ |
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314 |
push esi |
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315 |
mov esi, eax |
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316 |
add esi, [_data] |
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317 |
xor ecx, ecx |
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318 |
mov cx, word[edx] |
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319 |
test [_endianness], 1 |
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320 |
jz @f |
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321 |
xchg cl, ch |
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322 |
@@: |
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323 |
add edx, 2 |
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324 |
stdcall [decompress], [retvalue] |
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325 |
pop esi |
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326 |
dec [ebx + tiff_extra.offsets_number] |
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327 |
jnz .l_s |
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328 |
jmp .decoded |
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329 |
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330 |
.l_l: |
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331 |
lodsd_ |
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332 |
push esi |
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333 |
mov esi, eax |
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334 |
add esi, [_data] |
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335 |
mov ecx, [edx] |
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336 |
test [_endianness], 1 |
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337 |
jz @f |
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338 |
bswap ecx |
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339 |
@@: |
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340 |
add edx, 4 |
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341 |
stdcall [decompress], [retvalue] |
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342 |
pop esi |
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343 |
dec [ebx + tiff_extra.offsets_number] |
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344 |
jnz .l_l |
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345 |
jmp .decoded |
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346 |
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347 |
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348 |
.decoded: |
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349 |
cmp [ebx + tiff_extra.samples_per_pixel], 3 |
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350 |
jne .pop_quit |
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351 |
mov eax, [retvalue] |
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352 |
mov esi, [eax + Image.Data] |
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353 |
mov edi, [eax + Image.Data] |
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354 |
mov ecx, [eax + Image.Width] |
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355 |
imul ecx, [eax + Image.Height] |
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356 |
@@: |
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357 |
lodsw |
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358 |
movsb |
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359 |
mov byte[esi - 1], al |
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360 |
add edi, 2 |
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361 |
dec ecx |
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362 |
jnz @b |
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363 |
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364 |
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365 |
.pop_quit: |
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366 |
pop esi |
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367 |
.quit: |
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368 |
pop edi edx ebx |
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369 |
mov eax, [retvalue] |
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370 |
ret |
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371 |
endp |
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372 |
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373 |
proc tiff._.parse_IFDE _data, _endianness |
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374 |
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375 |
push ebx edx edi |
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376 |
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377 |
lodsw_ |
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378 |
mov edx, tiff.IFDE_tag_table.begin |
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379 |
mov ecx, (tiff.IFDE_tag_table.end-tiff.IFDE_tag_table.begin)/8 |
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380 |
.tag: |
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381 |
cmp ax, word[edx] |
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382 |
jne @f |
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383 |
lodsw_ |
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384 |
jmp dword[edx + 4] |
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385 |
@@: |
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386 |
add edx, 8 |
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387 |
dec ecx |
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388 |
jnz .tag |
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389 |
.tag_default: ; unknown/unsupported/uninteresting/unimportant |
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390 |
lodsw |
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391 |
lodsd |
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392 |
lodsd |
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393 |
jmp .quit ; just skip it |
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394 |
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395 |
.tag_100: |
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396 |
cmp ax, TIFF.IFDE_TYPE.SHORT |
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397 |
jne @f |
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398 |
lodsd |
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399 |
xor eax, eax |
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400 |
lodsw_ |
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401 |
mov [ebx + tiff_extra.image_width], eax |
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402 |
lodsw |
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403 |
jmp .quit |
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404 |
@@: |
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405 |
cmp ax, TIFF.IFDE_TYPE.LONG |
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406 |
jne @f |
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407 |
lodsd |
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408 |
lodsd_ |
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409 |
mov [ebx + tiff_extra.image_width], eax |
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410 |
jmp .quit |
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411 |
@@: |
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412 |
jmp .quit |
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413 |
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414 |
.tag_101: |
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415 |
cmp ax, TIFF.IFDE_TYPE.SHORT |
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416 |
jne @f |
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417 |
lodsd |
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418 |
xor eax, eax |
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419 |
lodsw_ |
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420 |
mov [ebx + tiff_extra.image_height], eax |
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421 |
lodsw |
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422 |
jmp .quit |
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423 |
@@: |
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|
424 |
cmp ax, TIFF.IFDE_TYPE.LONG |
|
|
425 |
jne @f |
|
|
426 |
lodsd |
|
|
427 |
lodsd_ |
|
|
428 |
mov [ebx + tiff_extra.image_height], eax |
|
|
429 |
jmp .quit |
|
|
430 |
@@: |
|
|
431 |
jmp .quit |
|
|
432 |
|
|
|
433 |
.tag_102: |
|
|
434 |
lodsd_ |
|
|
435 |
imul eax, TIFF.IFDE_TYPE_LENGTH.SHORT |
|
|
436 |
cmp eax, 4 |
|
|
437 |
ja @f |
|
|
438 |
xor eax, eax |
|
|
439 |
lodsw_ |
|
|
440 |
mov [ebx + tiff_extra.bits_per_sample], eax |
|
|
441 |
lodsw |
|
|
442 |
jmp .quit |
|
|
443 |
@@: |
|
|
444 |
lodsd_ |
|
|
445 |
add eax, [_data] |
|
|
446 |
push esi |
|
|
447 |
mov esi, eax |
|
|
448 |
xor eax, eax |
|
|
449 |
lodsw_ |
|
|
450 |
pop esi |
|
|
451 |
mov [ebx + tiff_extra.bits_per_sample], eax |
|
|
452 |
jmp .quit |
|
|
453 |
|
|
|
454 |
.tag_103: |
|
|
455 |
cmp ax, TIFF.IFDE_TYPE.SHORT |
|
|
456 |
jne @f |
|
|
457 |
lodsd |
|
|
458 |
xor eax, eax |
|
|
459 |
lodsw_ |
|
|
460 |
mov [ebx + tiff_extra.compression], eax |
|
|
461 |
lodsw |
|
|
462 |
jmp .quit |
|
|
463 |
@@: |
|
|
464 |
jmp .quit |
|
|
465 |
|
|
|
466 |
.tag_106: |
|
|
467 |
cmp ax, TIFF.IFDE_TYPE.SHORT |
|
|
468 |
jne @f |
|
|
469 |
lodsd |
|
|
470 |
xor eax, eax |
|
|
471 |
lodsw_ |
|
|
472 |
mov [ebx + tiff_extra.photometric], eax |
|
|
473 |
lodsw |
|
|
474 |
jmp .quit |
|
|
475 |
@@: |
|
|
476 |
|
|
|
477 |
jmp .quit |
|
|
478 |
|
|
|
479 |
.tag_111: |
|
|
480 |
cmp ax, TIFF.IFDE_TYPE.SHORT |
|
|
481 |
jne @f |
|
|
482 |
mov [ebx + tiff_extra.strip_offsets_length], TIFF.IFDE_TYPE_LENGTH.SHORT |
|
|
483 |
jmp .tag_111.common |
|
|
484 |
@@: |
|
|
485 |
mov [ebx + tiff_extra.strip_offsets_length], TIFF.IFDE_TYPE_LENGTH.LONG |
|
|
486 |
.tag_111.common: |
|
|
487 |
lodsd_ |
|
|
488 |
mov [ebx + tiff_extra.offsets_number], eax |
|
|
489 |
imul eax, [ebx+tiff_extra.strip_offsets_length] |
|
|
490 |
cmp eax, 4 |
|
|
491 |
ja @f |
|
|
492 |
mov [ebx + tiff_extra.strip_offsets], esi |
|
|
493 |
lodsd |
|
|
494 |
jmp .quit |
|
|
495 |
@@: |
|
|
496 |
lodsd_ |
|
|
497 |
add eax, [_data] |
|
|
498 |
mov [ebx + tiff_extra.strip_offsets], eax |
|
|
499 |
jmp .quit |
|
|
500 |
|
|
|
501 |
.tag_115: |
|
|
502 |
lodsd_ |
|
|
503 |
imul eax, TIFF.IFDE_TYPE_LENGTH.SHORT |
|
|
504 |
cmp eax, 4 |
|
|
505 |
ja @f |
|
|
506 |
xor eax, eax |
|
|
507 |
lodsw_ |
|
|
508 |
mov [ebx + tiff_extra.samples_per_pixel], eax |
|
|
509 |
lodsw |
|
|
510 |
jmp .quit |
|
|
511 |
@@: |
|
|
512 |
lodsd_ |
|
|
513 |
add eax, [_data] |
|
|
514 |
movzx eax, word[eax] |
|
|
515 |
jmp .quit |
|
|
516 |
|
|
|
517 |
.tag_116: |
|
|
518 |
cmp ax, TIFF.IFDE_TYPE.SHORT |
|
|
519 |
jne @f |
|
|
520 |
lodsd |
|
|
521 |
xor eax, eax |
|
|
522 |
lodsw_ |
|
|
523 |
mov [ebx + tiff_extra.rows_per_strip], eax |
|
|
524 |
lodsw |
|
|
525 |
jmp .quit |
|
|
526 |
@@: |
|
|
527 |
lodsd |
|
|
528 |
lodsd_ |
|
|
529 |
mov [ebx + tiff_extra.rows_per_strip], eax |
|
|
530 |
jmp .quit |
|
|
531 |
|
|
|
532 |
.tag_117: |
|
|
533 |
cmp ax, TIFF.IFDE_TYPE.SHORT |
|
|
534 |
jne @f |
|
|
535 |
mov [ebx + tiff_extra.strip_byte_counts_length], TIFF.IFDE_TYPE_LENGTH.SHORT |
|
|
536 |
jmp .tag_117.common |
|
|
537 |
@@: |
|
|
538 |
mov [ebx + tiff_extra.strip_byte_counts_length], TIFF.IFDE_TYPE_LENGTH.LONG |
|
|
539 |
.tag_117.common: |
|
|
540 |
lodsd_ |
|
|
541 |
imul eax, [ebx + tiff_extra.strip_byte_counts_length] |
|
|
542 |
cmp eax, 4 |
|
|
543 |
ja @f |
|
|
544 |
mov [ebx + tiff_extra.strip_byte_counts], esi |
|
|
545 |
lodsd |
|
|
546 |
jmp .quit |
|
|
547 |
@@: |
|
|
548 |
lodsd_ |
|
|
549 |
add eax, [_data] |
|
|
550 |
mov [ebx + tiff_extra.strip_byte_counts], eax |
|
|
551 |
jmp .quit |
|
|
552 |
|
|
|
553 |
.tag_140: |
|
|
554 |
lodsd |
|
|
555 |
lodsd_ |
|
|
556 |
add eax, [_data] |
|
|
557 |
mov [ebx + tiff_extra.palette], eax |
|
|
558 |
jmp .quit |
|
|
559 |
|
|
|
560 |
.quit: |
|
|
561 |
pop edi edx ebx |
|
|
562 |
ret |
|
|
563 |
endp |
|
|
564 |
|
|
|
565 |
|
|
|
566 |
proc tiff._.define_image_type |
|
|
567 |
|
|
|
568 |
xor eax, eax |
|
|
569 |
|
|
|
570 |
cmp [ebx + tiff_extra.bits_per_sample], 1 |
|
|
571 |
jg .not_bilevel |
|
|
572 |
mov eax, Image.bpp1 |
|
|
573 |
jmp .quit |
|
|
574 |
.not_bilevel: |
|
|
575 |
cmp [ebx + tiff_extra.palette], 0 |
|
|
576 |
je .without_palette |
|
|
577 |
cmp [ebx + tiff_extra.bits_per_sample], 4 |
|
|
578 |
jne @f |
|
|
579 |
mov eax, Image.bpp4 |
|
|
580 |
jmp .quit |
|
|
581 |
@@: |
|
|
582 |
cmp [ebx + tiff_extra.bits_per_sample], 8 |
|
|
583 |
jne @f |
|
|
584 |
mov eax, Image.bpp8 |
|
|
585 |
jmp .quit |
|
|
586 |
@@: |
|
|
587 |
jmp .quit |
|
|
588 |
.without_palette: |
|
|
589 |
cmp [ebx + tiff_extra.samples_per_pixel], 1 |
|
|
590 |
jg .not_grayscale |
|
|
591 |
cmp [ebx + tiff_extra.bits_per_sample], 4 |
|
|
592 |
jne @f |
|
|
593 |
mov eax, Image.bpp4 |
|
|
594 |
jmp .quit |
|
|
595 |
@@: |
|
|
596 |
cmp [ebx + tiff_extra.bits_per_sample], 8 |
|
|
597 |
jne @f |
|
|
598 |
mov eax, Image.bpp8 |
|
|
599 |
jmp .quit |
|
|
600 |
.not_grayscale: |
|
|
601 |
cmp [ebx + tiff_extra.samples_per_pixel], 3 |
|
|
602 |
jne @f |
|
|
603 |
mov eax, Image.bpp24 |
|
|
604 |
jmp .quit |
|
|
605 |
@@: |
|
|
606 |
jmp .quit |
|
|
607 |
.quit: |
|
|
608 |
ret |
|
|
609 |
endp |
|
|
610 |
|
|
|
611 |
|
|
|
612 |
proc tiff._.decompress.uncompressed _image |
|
|
613 |
|
|
|
614 |
rep movsb |
|
|
615 |
ret |
|
|
616 |
endp |
|
|
617 |
|
|
|
618 |
|
|
|
619 |
proc tiff._.decompress.packbits _image |
|
|
620 |
|
|
|
621 |
push ebx ecx edx esi |
|
|
622 |
|
|
|
623 |
mov edx, ecx |
|
|
624 |
|
|
|
625 |
.decode: |
|
|
626 |
lodsb |
|
|
627 |
dec edx |
| 2397 |
dunkaist |
628 |
cmp al, 0x7f |
| 2388 |
dunkaist |
629 |
jbe .different |
|
|
630 |
cmp al, 0x80 |
|
|
631 |
jne .identical |
|
|
632 |
test edx, edx |
|
|
633 |
jz .quit |
|
|
634 |
jmp .decode |
|
|
635 |
|
|
|
636 |
.identical: |
|
|
637 |
neg al |
|
|
638 |
inc al |
|
|
639 |
movzx ecx, al |
|
|
640 |
dec edx |
|
|
641 |
lodsb |
|
|
642 |
rep stosb |
|
|
643 |
test edx, edx |
|
|
644 |
jnz .decode |
|
|
645 |
jmp .quit |
|
|
646 |
|
|
|
647 |
.different: |
|
|
648 |
movzx ecx, al |
|
|
649 |
inc ecx |
|
|
650 |
sub edx, ecx |
|
|
651 |
rep movsb |
|
|
652 |
test edx, edx |
|
|
653 |
jnz .decode |
|
|
654 |
|
|
|
655 |
.quit: |
|
|
656 |
pop esi edx ecx ebx |
|
|
657 |
ret |
|
|
658 |
endp |
|
|
659 |
|
|
|
660 |
|
|
|
661 |
proc tiff._.decompress.ccitt1d _image |
|
|
662 |
locals |
|
|
663 |
current_tree rd 1 |
|
|
664 |
old_tree rd 1 |
|
|
665 |
width rd 1 |
|
|
666 |
height rd 1 |
|
|
667 |
width_left rd 1 |
|
|
668 |
is_makeup rd 1 |
|
|
669 |
endl |
|
|
670 |
push ebx ecx edx esi |
|
|
671 |
mov [is_makeup], 0 |
|
|
672 |
|
|
|
673 |
mov ebx, [_image] |
|
|
674 |
push [ebx + Image.Height] |
|
|
675 |
pop [height] |
|
|
676 |
push [ebx + Image.Width] |
|
|
677 |
pop [width] |
|
|
678 |
|
|
|
679 |
mov edx, esi |
|
|
680 |
.next_scanline: |
|
|
681 |
push [width] |
|
|
682 |
pop [width_left] |
|
|
683 |
dec [height] |
|
|
684 |
js .error |
|
|
685 |
mov [current_tree], tiff._.huffman_tree_white.begin |
|
|
686 |
mov [old_tree], tiff._.huffman_tree_black.begin |
|
|
687 |
mov ebx, 0 |
|
|
688 |
mov ecx, 8 |
|
|
689 |
.next_run: |
|
|
690 |
mov esi, [current_tree] |
|
|
691 |
.branch: |
|
|
692 |
lodsd |
|
|
693 |
btr eax, 31 |
|
|
694 |
jnc .not_a_leaf |
|
|
695 |
cmp eax, 63 |
|
|
696 |
seta byte[is_makeup] |
|
|
697 |
ja @f |
|
|
698 |
push [current_tree] |
|
|
699 |
push [old_tree] |
|
|
700 |
pop [current_tree] |
|
|
701 |
pop [old_tree] |
|
|
702 |
@@: |
|
|
703 |
stdcall tiff._.write_run, [width_left], [current_tree] |
|
|
704 |
mov [width_left], eax |
|
|
705 |
test byte[is_makeup], 0x01 |
|
|
706 |
jnz .next_run |
|
|
707 |
test eax, eax |
|
|
708 |
jnz .next_run |
|
|
709 |
jmp .next_scanline |
|
|
710 |
.not_a_leaf: |
|
|
711 |
test bh, bh |
|
|
712 |
jnz @f |
|
|
713 |
mov bl, byte[edx] |
|
|
714 |
inc edx |
|
|
715 |
mov bh, 8 |
|
|
716 |
@@: |
|
|
717 |
test al, 0x02 |
|
|
718 |
jz .not_a_corner |
|
|
719 |
dec bh |
|
|
720 |
sal bl, 1 |
|
|
721 |
lahf |
|
|
722 |
and ah, 0x03 |
|
|
723 |
cmp al, ah |
|
|
724 |
jne .error |
|
|
725 |
mov esi, [esi] |
|
|
726 |
jmp .branch |
|
|
727 |
.not_a_corner: |
|
|
728 |
lodsd |
|
|
729 |
dec bh |
|
|
730 |
sal bl, 1 |
|
|
731 |
jc .branch |
|
|
732 |
mov esi, eax |
|
|
733 |
jmp .branch |
|
|
734 |
.error: |
|
|
735 |
.quit: |
|
|
736 |
pop esi edx ecx ebx |
|
|
737 |
ret |
|
|
738 |
endp |
|
|
739 |
|
|
|
740 |
|
|
|
741 |
proc tiff._.write_run _width_left, _current_tree |
|
|
742 |
|
|
|
743 |
push ebx |
|
|
744 |
|
|
|
745 |
test eax, eax |
|
|
746 |
jz .done |
|
|
747 |
sub [_width_left], eax |
|
|
748 |
js .error |
|
|
749 |
cmp esi, tiff._.huffman_tree_black.begin |
|
|
750 |
seta bh |
|
|
751 |
|
|
|
752 |
cmp ecx, eax |
|
|
753 |
ja .one_byte |
|
|
754 |
.many_bytes: |
|
|
755 |
mov bl, [edi] |
|
|
756 |
@@: |
|
|
757 |
shl bl, 1 |
|
|
758 |
or bl, bh |
|
|
759 |
dec eax |
|
|
760 |
dec ecx |
|
|
761 |
jnz @b |
|
|
762 |
mov [edi], bl |
|
|
763 |
inc edi |
|
|
764 |
mov ecx, eax |
|
|
765 |
and eax, 0x07 |
|
|
766 |
shr ecx, 3 |
|
|
767 |
|
|
|
768 |
push eax |
|
|
769 |
xor eax, eax |
|
|
770 |
test bh, bh |
|
|
771 |
jz @f |
|
|
772 |
dec al |
|
|
773 |
@@: |
|
|
774 |
rep stosb |
|
|
775 |
pop eax |
|
|
776 |
|
|
|
777 |
mov ecx, 8 |
|
|
778 |
test eax, eax |
|
|
779 |
jz .done |
|
|
780 |
|
|
|
781 |
.one_byte: |
|
|
782 |
mov bl, [edi] |
|
|
783 |
@@: |
|
|
784 |
shl bl, 1 |
|
|
785 |
or bl, bh |
|
|
786 |
dec ecx |
|
|
787 |
dec eax |
|
|
788 |
jnz @b |
|
|
789 |
mov byte[edi], bl |
|
|
790 |
|
|
|
791 |
cmp [_width_left], 0 |
|
|
792 |
jne .done |
|
|
793 |
mov bl, [edi] |
|
|
794 |
shl bl, cl |
|
|
795 |
mov byte[edi], bl |
|
|
796 |
inc edi |
|
|
797 |
.done: |
|
|
798 |
mov eax, [_width_left] |
|
|
799 |
jmp .quit |
|
|
800 |
.error: |
|
|
801 |
.quit: |
|
|
802 |
pop ebx |
|
|
803 |
ret |
|
|
804 |
endp |
|
|
805 |
|
|
|
806 |
|
|
|
807 |
proc tiff._.get_word _endianness |
|
|
808 |
|
|
|
809 |
lodsw |
|
|
810 |
test [_endianness], 1 |
|
|
811 |
jnz @f |
|
|
812 |
ret |
|
|
813 |
@@: |
|
|
814 |
xchg al, ah |
|
|
815 |
ret |
|
|
816 |
endp |
|
|
817 |
|
|
|
818 |
|
|
|
819 |
proc tiff._.get_dword _endianness |
|
|
820 |
|
|
|
821 |
lodsd |
|
|
822 |
test [_endianness], 1 |
|
|
823 |
jnz @f |
|
|
824 |
ret |
|
|
825 |
@@: |
|
|
826 |
bswap eax |
|
|
827 |
ret |
|
|
828 |
|
|
|
829 |
ret |
|
|
830 |
endp |
|
|
831 |
|
|
|
832 |
|
|
|
833 |
;;================================================================================================;; |
|
|
834 |
;;////////////////////////////////////////////////////////////////////////////////////////////////;; |
|
|
835 |
;;================================================================================================;; |
|
|
836 |
;! Below is private data you should never use directly from your code ;; |
|
|
837 |
;;================================================================================================;; |
|
|
838 |
;;////////////////////////////////////////////////////////////////////////////////////////////////;; |
|
|
839 |
;;================================================================================================;; |
|
|
840 |
tiff.IFDE_tag_table.begin: |
|
|
841 |
.tag_100: dd 0x0100, tiff._.parse_IFDE.tag_100 ; image width |
|
|
842 |
.tag_101: dd 0x0101, tiff._.parse_IFDE.tag_101 ; image height (this is called 'length' in spec) |
|
|
843 |
.tag_102: dd 0x0102, tiff._.parse_IFDE.tag_102 ; bits per sample |
|
|
844 |
.tag_103: dd 0x0103, tiff._.parse_IFDE.tag_103 ; compression |
|
|
845 |
.tag_106: dd 0x0106, tiff._.parse_IFDE.tag_106 ; photometric interpretation |
|
|
846 |
.tag_111: dd 0x0111, tiff._.parse_IFDE.tag_111 ; strip offsets |
|
|
847 |
.tag_115: dd 0x0115, tiff._.parse_IFDE.tag_115 ; samples per pixel |
|
|
848 |
.tag_116: dd 0x0116, tiff._.parse_IFDE.tag_116 ; rows per strip |
|
|
849 |
.tag_117: dd 0x0117, tiff._.parse_IFDE.tag_117 ; strip byte counts |
|
|
850 |
.tag_140: dd 0x0140, tiff._.parse_IFDE.tag_140 ; color map |
|
|
851 |
tiff.IFDE_tag_table.end: |
|
|
852 |
|
|
|
853 |
include 'huffman.asm' ; huffman trees for ccitt1d compression method |