;;================================================================================================;;
;;//// libimg.asm //// (c) mike.dld, 2007-2008 ///////////////////////////////////////////////////;;
;;================================================================================================;;
;; ;;
;; This file is part of Common development libraries (Libs-Dev). ;;
;; ;;
;; Libs-Dev is free software: you can redistribute it and/or modify it under the terms of the GNU ;;
;; General Public License as published by the Free Software Foundation, either version 3 of the ;;
;; License, or (at your option) any later version. ;;
;; ;;
;; Libs-Dev is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without ;;
;; even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ;;
;; General Public License for more details. ;;
;; ;;
;; You should have received a copy of the GNU General Public License along with Libs-Dev. If not, ;;
;; see <http://www.gnu.org/licenses/>. ;;
;; ;;
;;================================================================================================;;
format MS COFF
public @EXPORT as 'EXPORTS'
include '../../../../struct.inc'
include '../../../../proc32.inc'
include '../../../../macros.inc'
purge section,mov;add,sub
include 'libimg.inc'
section '.flat' code readable align 16
include 'bmp/bmp.asm'
include 'gif/gif.asm'
mem.alloc dd ?
mem.free dd ?
mem.realloc dd ?
dll.load dd ?
;;================================================================================================;;
proc lib_init ;///////////////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Library entry point (called after library load) ;;
;;------------------------------------------------------------------------------------------------;;
;> eax = pointer to memory allocation routine ;;
;> ebx = pointer to memory freeing routine ;;
;> ecx = pointer to memory reallocation routine ;;
;> edx = pointer to library loading routine ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 1 (fail) / 0 (ok) (library initialization result) ;;
;;================================================================================================;;
mov [mem.alloc], eax
mov [mem.free], ebx
mov [mem.realloc], ecx
mov [dll.load], edx
.ok: xor eax,eax
ret
endp
;;================================================================================================;;
proc img.is_img _data, _length ;//////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< --- TBD --- ;;
;;================================================================================================;;
push ebx
mov ebx, img._.formats_table
@@: stdcall [ebx + FormatsTableEntry.Is], [_data], [_length]
or eax, eax
jnz @f
add ebx, sizeof.FormatsTableEntry
cmp dword[ebx], 0
jnz @b
xor eax, eax
@@: pop ebx
ret
endp
;;================================================================================================;;
proc img.info _data, _length ;////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< --- TBD --- ;;
;;================================================================================================;;
xor eax, eax
ret
endp
;;================================================================================================;;
proc img.from_file _filename ;////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 / pointer to image ;;
;;================================================================================================;;
xor eax, eax
ret
endp
;;================================================================================================;;
proc img.to_file _img, _filename ;////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = false / true ;;
;;================================================================================================;;
xor eax, eax
ret
endp
;;================================================================================================;;
proc img.from_rgb _rgb_data ;/////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 / pointer to image ;;
;;================================================================================================;;
xor eax, eax
ret
endp
;;================================================================================================;;
proc img.to_rgb _img ;////////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 / pointer to rgb_data (array of [rgb] triplets) ;;
;;================================================================================================;;
push esi edi
stdcall img._.validate, [_img]
or eax, eax
jnz .error
mov esi, [_img]
mov ecx, [esi + Image.Width]
imul ecx, [esi + Image.Height]
lea eax, [ecx * 3 + 4 * 3]
invoke mem.alloc, eax
or eax, eax
jz .error
mov edi, eax
push eax
mov eax, [esi + Image.Width]
stosd
mov eax, [esi + Image.Height]
stosd
mov esi, [esi + Image.Data]
@@: dec ecx
js @f
movsd
dec edi
jmp @b
@@: pop eax
pop edi esi
ret
.error:
xor eax, eax
pop edi esi
ret
endp
;;================================================================================================;;
proc img.decode _data, _length ;//////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 / pointer to image ;;
;;================================================================================================;;
push ebx
mov ebx, img._.formats_table
@@: stdcall [ebx + FormatsTableEntry.Is], [_data], [_length]
or eax, eax
jnz @f
add ebx, sizeof.FormatsTableEntry
cmp dword[ebx], 0
jnz @f
jmp .error
@@: stdcall [ebx + FormatsTableEntry.Decode], [_data], [_length]
.error:
ret
endp
;;================================================================================================;;
proc img.encode _img, _p_length ;/////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 / pointer to encoded data ;;
;< [_p_length] = data length ;;
;;================================================================================================;;
xor eax, eax
ret
endp
;;================================================================================================;;
proc img.create _width, _height ;/////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 / pointer to image ;;
;;================================================================================================;;
push ecx
stdcall img._.new
or eax, eax
jz .error
push eax
stdcall img._.resize_data, eax, [_width], [_height]
or eax, eax
jz .error.2
pop eax
ret
.error.2:
; pop eax
stdcall img._.delete; eax
xor eax, eax
.error:
pop ecx
ret
endp
;;================================================================================================;;
proc img.destroy _img ;///////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = false / true ;;
;;================================================================================================;;
;TODO: link Next and Previous
stdcall img._.delete, [_img]
ret
endp
;;================================================================================================;;
proc img.count _img ;/////////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Get number of images in the list (e.g. in animated GIF file) ;;
;;------------------------------------------------------------------------------------------------;;
;> _img = pointer to image ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = -1 (fail) / >0 (ok) ;;
;;================================================================================================;;
push ecx edx
mov edx, [_img]
stdcall img._.validate, edx
or eax, eax
jnz .error
@@: mov eax, [edx + Image.Previous]
or eax, eax
jz @f
mov edx, eax
jmp @b
@@: xor ecx, ecx
@@: inc ecx
mov eax, [edx + Image.Next]
or eax, eax
jz .exit
mov edx, eax
jmp @b
.exit:
mov eax, ecx
pop edx ecx
ret
.error:
or eax, -1
pop edx ecx
ret
endp
;;//// image processing //////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
proc img.lock_bits _img, _start_line, _end_line ;/////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 / pointer to bits ;;
;;================================================================================================;;
xor eax, eax
ret
endp
;;================================================================================================;;
proc img.unlock_bits _img, _lock ;////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = false / true ;;
;;================================================================================================;;
xor eax, eax
ret
endp
;;================================================================================================;;
proc img.flip _img, _flip_kind ;//////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Flip image ;;
;;------------------------------------------------------------------------------------------------;;
;> _img = pointer to image ;;
;> _flip_kind = one of FLIP_* constants ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = false / true ;;
;;================================================================================================;;
locals
scanline_len dd ?
endl
push esi edi
stdcall img._.validate, [_img]
or eax, eax
jnz .error
mov esi, [_img]
mov ecx, [esi + Image.Height]
mov eax, [esi + Image.Width]
shl eax, 2
mov [scanline_len], eax
push esi
test [_flip_kind], FLIP_VERTICAL
jz .dont_flip_vert
imul eax, ecx
sub eax, [scanline_len]
shr ecx, 1
mov esi, [esi + Image.Data]
lea edi, [esi + eax]
.next_line_vert:
push ecx
mov ecx, [scanline_len]
shr ecx, 2
@@: lodsd
xchg eax, [edi]
mov [esi - 4], eax
add edi, 4
dec ecx
jnz @b
pop ecx
mov eax, [scanline_len]
shl eax, 1
sub edi, eax
dec ecx
jnz .next_line_vert
.dont_flip_vert:
pop esi
test [_flip_kind], FLIP_HORIZONTAL
jz .exit
mov ecx, [esi + Image.Height]
mov esi, [esi + Image.Data]
lea edi, [esi - 4]
add edi, [scanline_len]
.next_line_horz:
push ecx esi edi
mov ecx, [scanline_len]
shr ecx, 3
@@: mov eax, [esi]
xchg eax, [edi]
mov [esi], eax
add esi, 4
add edi, -4
dec ecx
jnz @b
pop edi esi ecx
add esi, [scanline_len]
add edi, [scanline_len]
dec ecx
jnz .next_line_horz
.exit:
xor eax, eax
inc eax
pop edi esi
ret
.error:
xor eax, eax
pop edi esi
ret
endp
;;================================================================================================;;
proc img.rotate _img, _rotate_kind ;//////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Rotate image ;;
;;------------------------------------------------------------------------------------------------;;
;> _img = pointer to image ;;
;> _rotate_kind = one of ROTATE_* constants ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = false / true ;;
;;================================================================================================;;
locals
scanline_len_old dd ?
scanline_len_new dd ?
scanline_pixels_new dd ?
line_buffer dd ?
pixels_ptr dd ?
endl
mov [line_buffer], 0
push ebx esi edi
stdcall img._.validate, [_img]
or eax, eax
jnz .error
cmp [_rotate_kind], ROTATE_90_CCW
je .rotate_ccw_low
cmp [_rotate_kind], ROTATE_90_CW
je .rotate_cw_low
cmp [_rotate_kind], ROTATE_180
je .flip
jmp .exit
.rotate_ccw_low:
mov ebx, [_img]
mov eax, [ebx + Image.Height]
mov [scanline_pixels_new], eax
shl eax, 2
mov [scanline_len_new], eax
invoke mem.alloc, eax
or eax, eax
jz .error
mov [line_buffer], eax
mov ecx, [ebx + Image.Width]
lea eax, [ecx * 4]
mov [scanline_len_old], eax
mov eax, [scanline_len_new]
imul eax, ecx
add eax, [ebx + Image.Data]
mov [pixels_ptr], eax
.next_column_ccw_low:
dec ecx
jz .exchange_dims
push ecx
mov edx, [scanline_len_old]
add [scanline_len_old], -4
mov ecx, [scanline_pixels_new]
mov esi, [ebx + Image.Data]
mov edi, [line_buffer]
@@: mov eax, [esi]
stosd
add esi, edx
dec ecx
jnz @b
mov eax, [scanline_pixels_new]
mov edi, [ebx + Image.Data]
lea esi, [edi + 4]
mov edx, [scanline_len_old]
shr edx, 2
@@: mov ecx, edx
rep movsd
add esi, 4
dec eax
jnz @b
mov eax, [scanline_len_new]
sub [pixels_ptr], eax
mov ecx, [scanline_pixels_new]
mov esi, [line_buffer]
mov edi, [pixels_ptr]
rep movsd
pop ecx
jmp .next_column_ccw_low
.rotate_cw_low:
mov ebx, [_img]
mov eax, [ebx + Image.Height]
mov [scanline_pixels_new], eax
shl eax, 2
mov [scanline_len_new], eax
invoke mem.alloc, eax
or eax, eax
jz .error
mov [line_buffer], eax
mov ecx, [ebx + Image.Width]
lea eax, [ecx * 4]
mov [scanline_len_old], eax
mov eax, [scanline_len_new]
imul eax, ecx
add eax, [ebx + Image.Data]
mov [pixels_ptr], eax
.next_column_cw_low:
dec ecx
js .exchange_dims
push ecx
mov edx, [scanline_len_old]
add [scanline_len_old], -4
mov ecx, [scanline_pixels_new]
mov esi, [pixels_ptr]
add esi, -4
mov edi, [line_buffer]
@@: mov eax, [esi]
stosd
sub esi, edx
dec ecx
jnz @b
mov eax, [scanline_pixels_new]
dec eax
mov edi, [ebx + Image.Data]
add edi, [scanline_len_old]
lea esi, [edi + 4]
mov edx, [scanline_len_old]
shr edx, 2
@@: mov ecx, edx
rep movsd
add esi, 4
dec eax
jnz @b
mov eax, [scanline_len_new]
sub [pixels_ptr], eax
mov ecx, [scanline_pixels_new]
mov esi, [line_buffer]
mov edi, [pixels_ptr]
rep movsd
pop ecx
jmp .next_column_cw_low
.flip:
jmp .exit
.exchange_dims:
push [ebx + Image.Width] [ebx + Image.Height]
pop [ebx + Image.Width] [ebx + Image.Height]
.exit:
invoke mem.free, [line_buffer]
xor eax, eax
inc eax
pop edi esi ebx
ret
.error:
invoke mem.free, [line_buffer]
xor eax, eax
pop edi esi ebx
ret
endp
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
;! Below are private procs you should never call directly from your code ;;
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
;;================================================================================================;;
proc img._.validate, _img ;///////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< --- TBD --- ;;
;;================================================================================================;;
xor eax, eax
ret
endp
;;================================================================================================;;
proc img._.new ;//////////////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< 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
;;================================================================================================;;
proc img._.resize_data _img, _width, _height ;////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< --- TBD --- ;;
;;================================================================================================;;
push ebx
mov ebx, [_img]
mov eax, [_height]
imul eax, [_width]
shl eax, 2
invoke mem.realloc, [ebx + Image.Data], eax
or eax, eax
jz .error
mov [ebx + Image.Data], eax
push [_width]
pop [ebx + Image.Width]
push [_height]
pop [ebx + Image.Height]
.error:
pop ebx
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.count , 'img.count' , \
img.lock_bits , 'img.lock_bits' , \
img.unlock_bits , 'img.unlock_bits' , \
img.flip , 'img.flip' , \
img.rotate , 'img.rotate'