502 lines
25 KiB
NASM
502 lines
25 KiB
NASM
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;;================================================================================================;;
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;;//// libimg.asm //// (c) mike.dld, 2007-2008 ///////////////////////////////////////////////////;;
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;;================================================================================================;;
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;; ;;
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;; This file is part of Common development libraries (Libs-Dev). ;;
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;; ;;
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;; Libs-Dev is free software: you can redistribute it and/or modify it under the terms of the GNU ;;
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;; General Public License as published by the Free Software Foundation, either version 3 of the ;;
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;; License, or (at your option) any later version. ;;
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;; ;;
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;; Libs-Dev is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without ;;
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;; even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ;;
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;; General Public License for more details. ;;
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;; ;;
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;; You should have received a copy of the GNU General Public License along with Libs-Dev. If not, ;;
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;; see <http://www.gnu.org/licenses/>. ;;
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;; ;;
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;;================================================================================================;;
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format MS COFF
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public @EXPORT as 'EXPORTS'
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include '../../../../struct.inc'
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include '../../../../proc32.inc'
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include '../../../../macros.inc'
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purge section,mov;add,sub
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include 'libimg.inc'
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section '.flat' code readable align 16
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include 'bmp/bmp.asm'
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include 'gif/gif.asm'
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mem.alloc dd ?
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mem.free dd ?
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mem.realloc dd ?
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dll.load dd ?
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;;================================================================================================;;
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proc lib_init ;///////////////////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Library entry point (called after library load) ;;
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;;------------------------------------------------------------------------------------------------;;
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;> eax = pointer to memory allocation routine ;;
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;> ebx = pointer to memory freeing routine ;;
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;> ecx = pointer to memory reallocation routine ;;
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;> edx = pointer to library loading routine ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 1 (fail) / 0 (ok) (library initialization result) ;;
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;;================================================================================================;;
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mov [mem.alloc], eax
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mov [mem.free], ebx
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mov [mem.realloc], ecx
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mov [dll.load], edx
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.ok: xor eax,eax
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ret
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endp
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;;================================================================================================;;
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proc img.is_img _data, _length ;//////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< --- TBD --- ;;
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;;================================================================================================;;
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push ebx
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mov ebx, img._.formats_table
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@@: stdcall [ebx + FormatsTableEntry.Is], [_data], [_length]
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or eax, eax
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jnz @f
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add ebx, sizeof.FormatsTableEntry
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cmp dword[ebx], 0
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jnz @b
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xor eax, eax
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@@: pop ebx
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ret
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endp
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;;================================================================================================;;
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proc img.info _data, _length ;////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< --- TBD --- ;;
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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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proc img.from_file _filename ;////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 / pointer to image ;;
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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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proc img.to_file _img, _filename ;////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = false / true ;;
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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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proc img.from_rgb _rgb_data ;/////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 / pointer to image ;;
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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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proc img.to_rgb _img ;////////////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 / pointer to rgb_data (array of [rgb] triplets) ;;
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;;================================================================================================;;
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push esi edi
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stdcall img._.validate, [_img]
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or eax, eax
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jnz .error
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mov esi, [_img]
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mov ecx, [esi + Image.Width]
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imul ecx, [esi + Image.Height]
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lea eax, [ecx * 3 + 4 * 3]
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invoke mem.alloc, eax
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or eax, eax
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jz .error
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mov edi, eax
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push eax
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mov eax, [esi + Image.Width]
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stosd
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mov eax, [esi + Image.Height]
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stosd
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mov esi, [esi + Image.Data]
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@@: dec ecx
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js @f
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movsd
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dec edi
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jmp @b
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@@: pop eax
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pop edi esi
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ret
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.error:
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xor eax, eax
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pop edi esi
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ret
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endp
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;;================================================================================================;;
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proc img.decode _data, _length ;//////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 / pointer to image ;;
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;;================================================================================================;;
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push ebx
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mov ebx, img._.formats_table
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@@: stdcall [ebx + FormatsTableEntry.Is], [_data], [_length]
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or eax, eax
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jnz @f
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add ebx, sizeof.FormatsTableEntry
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cmp dword[ebx], 0
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jnz @f
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jmp .error
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@@: stdcall [ebx + FormatsTableEntry.Decode], [_data], [_length]
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.error:
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ret
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endp
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;;================================================================================================;;
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proc img.encode _img, _p_length ;/////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 / pointer to encoded data ;;
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;< [_p_length] = 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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proc img.create _width, _height ;/////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 / pointer to image ;;
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;;================================================================================================;;
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push ecx
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stdcall img._.new
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or eax, eax
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jz .error
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push eax
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stdcall img._resize_data, eax, [_width], [_height]
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or eax, eax
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jz .error.2
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pop eax
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ret
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.error.2:
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; pop eax
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stdcall img._.delete; eax
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xor eax, eax
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.error:
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pop ecx
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ret
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endp
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;;================================================================================================;;
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proc img.destroy _img ;///////////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = false / true ;;
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;;================================================================================================;;
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;TODO: link Next and Previous
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stdcall img._.delete, [_img]
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ret
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endp
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;;================================================================================================;;
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proc img._resize_data _img, _width, _height ;/////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< --- TBD --- ;;
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;;================================================================================================;;
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push ebx
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mov ebx, [_img]
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mov eax, [_height]
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imul eax, [_width]
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shl eax, 2
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invoke mem.realloc, [ebx + Image.Data], eax
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or eax, eax
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jz .error
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mov [ebx + Image.Data], eax
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push [_width]
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pop [ebx + Image.Width]
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push [_height]
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pop [ebx + Image.Height]
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.error:
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pop ebx
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ret
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endp
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;;================================================================================================;;
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proc img.lock_bits _img, _start_line, _end_line ;/////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 / pointer to bits ;;
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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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proc img.unlock_bits _img, _lock ;////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = false / true ;;
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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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;;//// image processing //////////////////////////////////////////////////////////////////////////;;
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;;================================================================================================;;
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proc img.flip _img, _flip_kind ;//////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = false / true ;;
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;;================================================================================================;;
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locals
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scanline_len dd ?
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endl
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push esi edi
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stdcall img._.validate, [_img]
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or eax, eax
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jnz .error
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mov esi, [_img]
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mov ecx, [esi + Image.Height]
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mov eax, [esi + Image.Width]
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shl eax, 2
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mov [scanline_len], eax
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test [_flip_kind], FLIP_VERTICAL
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jz .dont_flip_vert
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imul eax, ecx
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sub eax, [scanline_len]
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shr ecx, 1
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mov esi, [esi + Image.Data]
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lea edi, [esi + eax]
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.next_line_vert:
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push ecx
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mov ecx, [scanline_len]
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@@: lodsd
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xchg eax, [edi]
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mov [esi - 4], eax
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add edi, 4
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add ecx, -4
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jnz @b
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mov eax, [scanline_len]
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shl eax, 1
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sub edi, eax
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pop ecx
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dec ecx
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jnz .next_line_vert
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.dont_flip_vert:
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test [_flip_kind], FLIP_HORIZONTAL
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jz .exit
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;TODO: horz flip code
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.exit:
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xor eax, eax
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inc eax
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pop edi esi
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ret
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.error:
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xor eax, eax
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pop edi esi
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ret
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endp
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;;================================================================================================;;
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;;////////////////////////////////////////////////////////////////////////////////////////////////;;
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;;================================================================================================;;
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;! Below are private procs you should never call directly from your code ;;
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;;================================================================================================;;
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;;////////////////////////////////////////////////////////////////////////////////////////////////;;
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;;================================================================================================;;
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;;================================================================================================;;
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proc img._.validate, _img ;///////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;< --- TBD --- ;;
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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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proc img._.new ;//////////////////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
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;> --- TBD --- ;;
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;;------------------------------------------------------------------------------------------------;;
|
||
|
|
;< eax = 0 / pointer to image ;;
|
||
|
|
;;================================================================================================;;
|
||
|
|
invoke mem.alloc, sizeof.Image
|
||
|
|
ret
|
||
|
|
endp
|
||
|
|
|
||
|
|
;;================================================================================================;;
|
||
|
|
proc img._.delete _img ;//////////////////////////////////////////////////////////////////////////;;
|
||
|
|
;;------------------------------------------------------------------------------------------------;;
|
||
|
|
;? --- TBD --- ;;
|
||
|
|
;;------------------------------------------------------------------------------------------------;;
|
||
|
|
;> --- TBD --- ;;
|
||
|
|
;;------------------------------------------------------------------------------------------------;;
|
||
|
|
;< eax = false / true ;;
|
||
|
|
;;================================================================================================;;
|
||
|
|
push edx
|
||
|
|
mov edx, [_img]
|
||
|
|
cmp [edx + Image.Data], 0
|
||
|
|
je @f
|
||
|
|
invoke mem.free, [edx + Image.Data]
|
||
|
|
@@: cmp [edx + Image.Extended], 0
|
||
|
|
je @f
|
||
|
|
invoke mem.free, [edx + Image.Extended]
|
||
|
|
@@: invoke mem.free, edx
|
||
|
|
pop edx
|
||
|
|
ret
|
||
|
|
endp
|
||
|
|
|
||
|
|
|
||
|
|
;;================================================================================================;;
|
||
|
|
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
|
||
|
|
;;================================================================================================;;
|
||
|
|
;! Below is private data you should never use directly from your code ;;
|
||
|
|
;;================================================================================================;;
|
||
|
|
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
|
||
|
|
;;================================================================================================;;
|
||
|
|
|
||
|
|
|
||
|
|
img._.formats_table:
|
||
|
|
.bmp dd img.is.bmp, img.decode.bmp, img.encode.bmp
|
||
|
|
; .ico dd img.is.ico, img.decode.ico, img.encode.ico
|
||
|
|
; .cur dd img.is.cur, img.decode.cur, img.encode.cur
|
||
|
|
.gif dd img.is.gif, img.decode.gif, img.encode.gif
|
||
|
|
; .png dd img.is.png, img.decode.png, img.encode.png
|
||
|
|
; .jpg dd img.is.jpg, img.decode.jpg, img.encode.jpg
|
||
|
|
dd 0
|
||
|
|
|
||
|
|
|
||
|
|
;;================================================================================================;;
|
||
|
|
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
|
||
|
|
;;================================================================================================;;
|
||
|
|
;! Exported functions section ;;
|
||
|
|
;;================================================================================================;;
|
||
|
|
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
|
||
|
|
;;================================================================================================;;
|
||
|
|
|
||
|
|
|
||
|
|
align 16
|
||
|
|
@EXPORT:
|
||
|
|
|
||
|
|
export \
|
||
|
|
lib_init , 'lib_init' , \
|
||
|
|
0x00010001 , 'version' , \
|
||
|
|
img.is_img , 'img.is_img' , \
|
||
|
|
img.info , 'img.info' , \
|
||
|
|
img.from_file , 'img.from_file' , \
|
||
|
|
img.to_file , 'img.to_file' , \
|
||
|
|
img.from_rgb , 'img.from_rgb' , \
|
||
|
|
img.to_rgb , 'img.to_rgb' , \
|
||
|
|
img.decode , 'img.decode' , \
|
||
|
|
img.encode , 'img.encode' , \
|
||
|
|
img.create , 'img.create' , \
|
||
|
|
img.destroy , 'img.destroy' , \
|
||
|
|
img.lock_bits , 'img.lock_bits' , \
|
||
|
|
img.unlock_bits , 'img.unlock_bits'
|