;;================================================================================================;;
;;//// libimg.asm //// (c) mike.dld, 2007-2008, (c) diamond, 2009, (c) dunkaist, 2011-2013 ///////;;
;;================================================================================================;;
;; ;;
;; 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 ;;
;; Lesser General Public License as published by the Free Software Foundation, either version 2.1 ;;
;; 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 ;;
;; Lesser General Public License for more details. ;;
;; ;;
;; You should have received a copy of the GNU Lesser 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'
include '../../../../config.inc'
;include '../../../../debug.inc'
purge section,mov,add,sub
include 'libimg.inc'
section '.flat' code readable align 16
include 'bmp/bmp.asm'
include 'gif/gif.asm'
include 'jpeg/jpeg.asm'
include 'png/png.asm'
include 'tga/tga.asm'
include 'z80/z80.asm'
include 'ico_cur/ico_cur.asm'
include 'pcx/pcx.asm'
include 'xcf/xcf.asm'
include 'tiff/tiff.asm'
include 'pnm/pnm.asm'
include 'wbmp/wbmp.asm'
include 'xbm/xbm.asm'
include 'scale.asm'
include 'convert.asm'
;include 'transform.asm'
;;================================================================================================;;
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
call img.initialize.jpeg
xor eax, eax
cpuid
cmp ecx, 'ntel'
jnz @f
mov dword [img._.do_rgb.handlers + (Image.bpp15-1)*4], img._.do_rgb.bpp15.intel
mov dword [img._.do_rgb.handlers + (Image.bpp16-1)*4], img._.do_rgb.bpp16.intel
@@:
.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_rgb2 _img, _out ;/////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? decodes image data into RGB triplets and stores them where [_out] points to ;;
;;------------------------------------------------------------------------------------------------;;
;> [_img] = pointer to source image ;;
;> [_out] = where to store RGB triplets ;;
;;------------------------------------------------------------------------------------------------;;
;< none ;;
;;================================================================================================;;
push esi edi
mov esi, [_img]
stdcall img._.validate, esi
or eax, eax
jnz .ret
mov edi, [_out]
call img._.do_rgb
.ret:
pop edi esi
ret
endp
;;================================================================================================;;
proc img.to_rgb _img ;////////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? decodes image data into RGB triplets and returns pointer to memory area containing them ;;
;;------------------------------------------------------------------------------------------------;;
;> [_img] = pointer to source image ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 / pointer to rgb_data (array of [rgb] triplets) ;;
;;================================================================================================;;
push esi edi
mov esi, [_img]
stdcall img._.validate, esi
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
call img._.do_rgb
pop eax
pop edi esi
ret
.error:
xor eax, eax
pop edi esi
ret
endp
;;================================================================================================;;
proc img._.do_rgb ;///////////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? decodes [esi + Image.Data] data into RGB triplets and stores them at [edi] ;;
;;------------------------------------------------------------------------------------------------;;
;> esi = pointer to source image ;;
;> edi = pointer to memory to store RGB triplets ;;
;;------------------------------------------------------------------------------------------------;;
;< none ;;
;;================================================================================================;;
mov ecx, [esi + Image.Width]
imul ecx, [esi + Image.Height]
mov eax, [esi + Image.Type]
jmp dword [.handlers + (eax-1)*4]
align 16
.bpp8i:
; 8 BPP WITH PALETTE -> 24 BPP
push ebx
mov ebx, [esi + Image.Palette]
mov esi, [esi + Image.Data]
sub ecx, 1
jz .bpp8i.last
@@:
movzx eax, byte [esi]
add esi, 1
mov eax, [ebx + eax*4]
mov [edi], eax
add edi, 3
sub ecx, 1
jnz @b
.bpp8i.last:
movzx eax, byte [esi]
mov eax, [ebx + eax*4]
mov [edi], ax
shr eax, 16
mov [edi+2], al
pop ebx
ret
align 16
.bpp8g:
; 8 BPP GRAYSCALE -> 24 BPP
mov esi, [esi + Image.Data]
@@:
lodsb
mov ah, al
stosb
stosw
dec ecx
jnz @b
ret
;
;align 16
;.bpp8a: ; considered application layer, may be changed in the future
;; 8a BPP -> 24 BPP
; mov esi, [esi + Image.Data]
;@@:
; lodsw
; mov ah, al
; stosb
; stosw
; dec ecx
; jnz @b
; ret
; 15 BPP -> 24 BPP
.bpp15.intel:
push ebx ebp
sub ecx, 4
jb .bpp15.tail
align 16
.bpp15.intel.loop:
repeat 2
mov ebx, [esi]
mov al, [esi]
mov ah, [esi+1]
add esi, 4
and al, 0x1F
and ah, 0x1F shl 2
mov ebp, ebx
mov dl, al
mov dh, ah
shr al, 2
shr ah, 4
shl dl, 3
shl dh, 1
and ebp, 0x1F shl 5
add al, dl
add ah, dh
shr ebp, 2
mov [edi], al
mov [edi+2], ah
mov eax, ebx
mov ebx, ebp
shr eax, 16
shr ebx, 5
add ebx, ebp
mov ebp, eax
mov [edi+1], bl
and eax, (0x1F) or (0x1F shl 10)
and ebp, 0x1F shl 5
lea edx, [eax+eax]
shr al, 2
mov ebx, ebp
shr ah, 4
shl dl, 2
shr ebx, 2
shr ebp, 7
add al, dl
add ah, dh
mov [edi+3], al
add ebx, ebp
mov [edi+5], ah
mov [edi+4], bl
add edi, 6
end repeat
sub ecx, 4
jnb .bpp15.intel.loop
.bpp15.tail:
add ecx, 4
jz .bpp15.done
@@:
movzx eax, word [esi]
mov ebx, eax
add esi, 2
and eax, (0x1F) or (0x1F shl 10)
and ebx, 0x1F shl 5
lea edx, [eax+eax]
shr al, 2
mov ebp, ebx
shr ebx, 2
shr ah, 4
shl dl, 2
shr ebp, 7
add eax, edx
add ebx, ebp
mov [edi], al
mov [edi+1], bl
mov [edi+2], ah
add edi, 3
sub ecx, 1
jnz @b
.bpp15.done:
pop ebp ebx
ret
.bpp15.amd:
push ebx ebp
sub ecx, 4
jb .bpp15.tail
align 16
.bpp15.amd.loop:
repeat 4
if (% mod 2) = 1
mov eax, dword [esi]
mov ebx, dword [esi]
else
movzx eax, word [esi]
mov ebx, eax
end if
add esi, 2
and eax, (0x1F) or (0x1F shl 10)
and ebx, 0x1F shl 5
lea edx, [eax+eax]
shr al, 2
mov ebp, ebx
shr ebx, 2
shr ah, 4
shl dl, 2
shr ebp, 7
add eax, edx
add ebx, ebp
mov [edi], al
mov [edi+1], bl
mov [edi+2], ah
add edi, 3
end repeat
sub ecx, 4
jnb .bpp15.amd.loop
jmp .bpp15.tail
; 16 BPP -> 24 BPP
.bpp16.intel:
push ebx ebp
sub ecx, 4
jb .bpp16.tail
align 16
.bpp16.intel.loop:
repeat 2
mov ebx, [esi]
mov al, [esi]
mov ah, [esi+1]
add esi, 4
and al, 0x1F
and ah, 0x1F shl 3
mov ebp, ebx
mov dl, al
mov dh, ah
shr al, 2
shr ah, 5
shl dl, 3
and ebp, 0x3F shl 5
add al, dl
add ah, dh
shr ebp, 3
mov [edi], al
mov [edi+2], ah
mov eax, ebx
mov ebx, ebp
shr eax, 16
shr ebx, 6
add ebx, ebp
mov ebp, eax
mov [edi+1], bl
and eax, (0x1F) or (0x1F shl 11)
and ebp, 0x3F shl 5
mov edx, eax
shr al, 2
mov ebx, ebp
shr ah, 5
shl dl, 3
shr ebx, 3
shr ebp, 9
add al, dl
add ah, dh
mov [edi+3], al
add ebx, ebp
mov [edi+5], ah
mov [edi+4], bl
add edi, 6
end repeat
sub ecx, 4
jnb .bpp16.intel.loop
.bpp16.tail:
add ecx, 4
jz .bpp16.done
@@:
movzx eax, word [esi]
mov ebx, eax
add esi, 2
and eax, (0x1F) or (0x1F shl 11)
and ebx, 0x3F shl 5
mov edx, eax
shr al, 2
mov ebp, ebx
shr ebx, 3
shr ah, 5
shl dl, 3
shr ebp, 9
add eax, edx
add ebx, ebp
mov [edi], al
mov [edi+1], bl
mov [edi+2], ah
add edi, 3
sub ecx, 1
jnz @b
.bpp16.done:
pop ebp ebx
ret
.bpp16.amd:
push ebx ebp
sub ecx, 4
jb .bpp16.tail
align 16
.bpp16.amd.loop:
repeat 4
if (% mod 2) = 1
mov eax, dword [esi]
mov ebx, dword [esi]
else
movzx eax, word [esi]
mov ebx, eax
end if
add esi, 2
and eax, (0x1F) or (0x1F shl 11)
and ebx, 0x3F shl 5
mov edx, eax
shr al, 2
mov ebp, ebx
shr ebx, 3
shr ah, 5
shl dl, 3
shr ebp, 9
add eax, edx
add ebx, ebp
mov [edi], al
mov [edi+1], bl
mov [edi+2], ah
add edi, 3
end repeat
sub ecx, 4
jnb .bpp16.amd.loop
jmp .bpp16.tail
align 16
.bpp24:
; 24 BPP -> 24 BPP
lea ecx, [ecx*3 + 3]
mov esi, [esi + Image.Data]
shr ecx, 2
rep movsd
ret
align 16
.bpp32:
; 32 BPP -> 24 BPP
mov esi, [esi + Image.Data]
@@:
mov eax, [esi]
mov [edi], ax
shr eax, 16
mov [edi+2], al
add esi, 4
add edi, 3
sub ecx, 1
jnz @b
@@:
ret
align 16
.bpp1:
push ebx ebp
mov ebp, [esi + Image.Width]
mov edx, [esi + Image.Height]
shl edx, 16
mov ebx, [esi + Image.Palette]
mov esi, [esi + Image.Data]
.bpp1.pre:
mov dx, bp
mov ecx, 7
.bpp1.begin:
xor eax, eax
bt [esi], ecx
adc eax, 0
mov eax, [ebx + eax*4]
mov [edi], ax
shr eax, 16
mov [edi + 2], al
add edi, 3
dec dx
jz .bpp1.end_line
dec ecx
jns .bpp1.begin
mov ecx, 7
inc esi
jmp .bpp1.begin
.bpp1.end_line:
sub edx, 0x10000
jz .bpp1.quit
inc esi
jmp .bpp1.pre
.bpp1.quit:
pop ebp ebx
ret
align 16
.bpp2i:
push ebx ebp
mov ebp, [esi + Image.Width]
mov edx, [esi + Image.Height]
shl edx, 16
mov ebx, [esi + Image.Palette]
mov esi, [esi + Image.Data]
.bpp2i.pre:
mov dx, bp
mov ecx, 3
.bpp2i.begin:
mov eax, 3
shl ecx, 1
shl eax, cl
and al, [esi]
shr eax, cl
shr ecx, 1
mov eax, [ebx + eax*4]
mov [edi], ax
shr eax, 16
mov [edi + 2], al
add edi, 3
dec dx
jz .bpp2i.end_line
dec ecx
jns .bpp2i.begin
mov ecx, 3
inc esi
jmp .bpp2i.begin
.bpp2i.end_line:
sub edx, 0x10000
jz .bpp2i.quit
inc esi
jmp .bpp2i.pre
.bpp2i.quit:
pop ebp ebx
ret
align 16
.bpp4i:
push ebx ebp
mov ebp, [esi + Image.Width]
mov edx, [esi + Image.Height]
shl edx, 16
mov ebx, [esi + Image.Palette]
mov esi, [esi + Image.Data]
.bpp4i.pre:
mov dx, bp
mov ecx, 1
.bpp4i.begin:
mov eax, 15
shl ecx, 2
shl eax, cl
and al, [esi]
shr eax, cl
shr ecx, 2
mov eax, [ebx + eax*4]
mov [edi], ax
shr eax, 16
mov [edi + 2], al
add edi, 3
dec dx
jz .bpp4i.end_line
dec ecx
jns .bpp4i.begin
mov ecx, 1
inc esi
jmp .bpp4i.begin
.bpp4i.end_line:
sub edx, 0x10000
jz .bpp4i.quit
inc esi
jmp .bpp4i.pre
.bpp4i.quit:
pop ebp ebx
ret
endp
;;================================================================================================;;
proc img.decode _data, _length, _options ;////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? decodes loaded into memory graphic file ;;
;;------------------------------------------------------------------------------------------------;;
;> [_data] = pointer to file in memory ;;
;> [_length] = size in bytes of memory area pointed to by [_data] ;;
;> [_options] = 0 / pointer to the structure of additional options ;;
;;------------------------------------------------------------------------------------------------;;
;< 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], eax ;0
jnz @b
pop ebx
ret
@@: mov eax, [ebx + FormatsTableEntry.Decode]
pop ebx
leave
jmp eax
endp
;;================================================================================================;;
proc img.encode _img, _common, _specific ;////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? encode image to some format ;;
;;------------------------------------------------------------------------------------------------;;
;> [_img] = pointer to input image ;;
;> [_common] = some most important options ;;
; 0x00 : byte : format id (defined in libimg.inc) ;;
; 0x01 : byte : fast encoding (0) / best compression ratio (255) ;;
; 0 : store uncompressed data (if supported both by the format and libimg) ;;
; 1 - 255 : use compression, if supported ;;
; this option may be ignored if any format specific options are defined ;;
; i.e. the 0 here will be ignored if some compression algorithm is specified ;;
; 0x02 : byte : flags (bitfield) ;;
; 0x01 : return an error if format specific conditions cannot be met ;;
; 0x02 : preserve current bit depth. means 8bpp/16bpp/24bpp and so on ;;
; 0x04 : delete alpha channel, if any ;;
; 0x08 : flush alpha channel with 0xff, if any; add it if none ;;
; 0x03 : byte : reserved, must be 0 ;;
;> [_specific] = 0 / pointer to the structure of format specific options ;;
; see <format_name>.inc for description ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 / pointer to encoded data ;;
;< ecx = error code / the size of encoded data ;;
; 1 : out of memory ;;
; 2 : format is not supported ;;
; 3 : specific conditions cannot be satisfied ;;
; 4 : bit depth cannot be preserved ;;
;;================================================================================================;;
mov ebx, [_img]
movzx eax, byte[_common]
dec eax
imul eax, sizeof.FormatsTableEntry
add eax, FormatsTableEntry.Capabilities
add eax, img.formats_table
mov eax, [eax]
test eax, 1 ; is encoding to this format supported at all?
jnz @f
mov ecx, LIBIMG_ERROR_FORMAT
jmp .error
@@:
mov ecx, [ebx + Image.Type]
mov edx, 1
shl edx, cl
test eax, edx
jnz .bit_depth_ok
test byte[_common+2], LIBIMG_ENCODE_STRICT_BIT_DEPTH
jz @f
mov ecx, LIBIMG_ERROR_BIT_DEPTH
jmp .error
@@:
mov edx, 1 SHL Image.bpp24
test eax, edx
jnz @f
mov ecx, LIBIMG_ERROR_BIT_DEPTH
jmp .error
@@:
stdcall img.create, [ebx + Image.Width], [ebx + Image.Height], Image.bpp24
test eax, eax
jnz @f
mov ecx, LIBIMG_ERROR_OUT_OF_MEMORY
jmp .error
@@:
push eax
stdcall img.to_rgb2, ebx, [eax + Image.Data]
pop ebx
.bit_depth_ok:
movzx eax, byte[_common]
dec eax
imul eax, sizeof.FormatsTableEntry
add eax, FormatsTableEntry.Encode
add eax, img.formats_table
mov eax, [eax]
stdcall eax, [_img], [_common], [_specific]
push eax ecx
cmp ebx, [_img]
je @f
stdcall img.destroy, ebx
@@:
pop ecx eax
jmp .quit
.error:
xor eax, eax
.quit:
ret
endp
;;================================================================================================;;
proc img.create _width, _height, _type ;//////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? creates an Image structure and initializes some its fields ;;
;;------------------------------------------------------------------------------------------------;;
;> [_width] = width of an image in pixels ;;
;> [_height] = height of an image in pixels ;;
;> [_type] = one of the Image.bppN constants from libimg.inc ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 / pointer to image ;;
;;================================================================================================;;
push ecx
stdcall img._.new
or eax, eax
jz .error
mov ecx, [_type]
mov [eax + Image.Type], ecx
push eax
stdcall img._.resize_data, eax, [_width], [_height]
or eax, eax
jz .error.2
pop eax
jmp .ret
.error.2:
; pop eax
stdcall img._.delete; eax
xor eax, eax
.error:
.ret:
pop ecx
ret
endp
;;================================================================================================;;
proc img.destroy.layer _img ;/////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? frees memory occupied by an image and all the memory regions its fields point to ;;
;? for image sequences deletes only one frame and fixes Previous/Next pointers ;;
;;------------------------------------------------------------------------------------------------;;
;> [_img] = pointer to image ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 (fail) / 1 (success) ;;
;;================================================================================================;;
mov eax, [_img]
mov edx, [eax + Image.Previous]
test edx, edx
jz @f
push [eax + Image.Next]
pop [edx + Image.Next]
@@:
mov edx, [eax + Image.Next]
test edx, edx
jz @f
push [eax + Image.Previous]
pop [edx + Image.Previous]
@@:
stdcall img._.delete, eax
ret
endp
;;================================================================================================;;
proc img.destroy _img ;///////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? frees memory occupied by an image and all the memory regions its fields point to ;;
;? follows Previous/Next pointers and deletes all the images in sequence ;;
;;------------------------------------------------------------------------------------------------;;
;> [_img] = pointer to image ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 (fail) / 1 (success) ;;
;;================================================================================================;;
push 1
mov eax, [_img]
mov eax, [eax + Image.Previous]
.destroy_prev_loop:
test eax, eax
jz .destroy_prev_done
pushd [eax + Image.Previous]
stdcall img._.delete, eax
test eax, eax
jnz @f
mov byte [esp+4], 0
@@:
pop eax
jmp .destroy_prev_loop
.destroy_prev_done:
mov eax, [_img]
.destroy_next_loop:
pushd [eax + Image.Next]
stdcall img._.delete, eax
test eax, eax
jnz @f
mov byte [esp+4], 0
@@:
pop eax
test eax, eax
jnz .destroy_next_loop
pop eax
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.layer _img, _flip_kind ;////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Flip image layer ;;
;;------------------------------------------------------------------------------------------------;;
;> _img = pointer to image ;;
;> _flip_kind = one of FLIP_* constants ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = false / true ;;
;;================================================================================================;;
locals
scanline_len dd ?
endl
push ebx esi edi
mov ebx, [_img]
stdcall img._.validate, ebx
or eax, eax
jnz .error
mov ecx, [ebx + Image.Height]
mov eax, [ebx + Image.Width]
call img._.get_scanline_len
mov [scanline_len], eax
test [_flip_kind], FLIP_VERTICAL
jz .dont_flip_vert
imul eax, ecx
sub eax, [scanline_len]
shr ecx, 1
mov esi, [ebx + Image.Data]
lea edi, [esi + eax]
.next_line_vert:
push ecx
mov ecx, [scanline_len]
push ecx
shr ecx, 2
@@:
dec ecx
js @f
mov eax, [esi]
xchg eax, [edi]
mov [esi], eax
add esi, 4
add edi, 4
jmp @b
@@:
pop ecx
and ecx, 3
jz .cont_line_vert
@@:
mov al, [esi]
xchg al, [edi]
mov [esi], al
add esi, 1
add edi, 1
dec ecx
jnz @b
.cont_line_vert:
pop ecx
mov eax, [scanline_len]
shl eax, 1
sub edi, eax
dec ecx
jnz .next_line_vert
.dont_flip_vert:
test [_flip_kind], FLIP_HORIZONTAL
jz .exit
mov ecx, [ebx + Image.Height]
mov eax, [ebx + Image.Type]
mov esi, [ebx + Image.Data]
mov edi, [scanline_len]
add edi, esi
jmp dword [.handlers_horz + (eax-1)*4]
.bpp32_horz:
sub edi, 4
.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
sub ecx, 1
jnz @b
pop edi esi ecx
add esi, [scanline_len]
add edi, [scanline_len]
dec ecx
jnz .next_line_horz
jmp .exit
.bpp1x_horz:
sub edi, 2
.next_line_horz1x:
push ecx esi edi
mov ecx, [ebx + Image.Width]
@@: mov ax, [esi]
mov dx, [edi]
mov [edi], ax
mov [esi], dx
add esi, 2
sub edi, 2
sub ecx, 2
ja @b
pop edi esi ecx
add esi, [scanline_len]
add edi, [scanline_len]
dec ecx
jnz .next_line_horz1x
jmp .exit
.bpp8ig_horz:
dec edi
.next_line_horz8ig:
push ecx esi edi
mov ecx, [scanline_len]
shr ecx, 1
@@: mov al, [esi]
mov dl, [edi]
mov [edi], al
mov [esi], dl
add esi, 1
sub edi, 1
sub ecx, 1
jnz @b
pop edi esi ecx
add esi, [scanline_len]
add edi, [scanline_len]
dec ecx
jnz .next_line_horz8ig
jmp .exit
.bpp24_horz:
sub edi, 3
.next_line_horz24:
push ecx esi edi
mov ecx, [ebx + Image.Width]
@@:
mov al, [esi]
mov dl, [edi]
mov [edi], al
mov [esi], dl
mov al, [esi+1]
mov dl, [edi+1]
mov [edi+1], al
mov [esi+1], dl
mov al, [esi+2]
mov dl, [edi+2]
mov [edi+2], al
mov [esi+2], dl
add esi, 3
sub edi, 3
sub ecx, 2
ja @b
pop edi esi ecx
add esi, [scanline_len]
add edi, [scanline_len]
dec ecx
jnz .next_line_horz24
jmp .exit
.bpp1_horz:
mov edi, [scanline_len]
mov edx, [ebx + Image.Width]
and edx, 7
neg edx
add edx, 8
and edx, 7
.bpp1_horz.begin:
push ebx edx esi
mov eax, 7
add edi, esi
sub edi, 1
mov ebx, [ebx + Image.Width]
shr ebx, 1
.bpp1_horz.bit:
bt [edi], edx
jc @f
btr [esi], eax
jmp .bpp1_horz.right
@@:
bts [esi], eax
.bpp1_horz.right:
jnc @f
bts [edi], edx
jmp .bpp1_horz.bit_done
@@:
btr [edi], edx
.bpp1_horz.bit_done:
inc edx
and edx, 7
jnz @f
dec edi
@@:
dec eax
jns @f
mov eax, 7
inc esi
@@:
dec ebx
jnz .bpp1_horz.bit
pop esi edx ebx
add esi, [scanline_len]
mov edi, [scanline_len]
dec ecx
jnz .bpp1_horz.begin
jmp .exit
.bpp2i_horz:
mov edi, [scanline_len]
mov edx, [ebx + Image.Width]
and edx, 3
neg edx
add edx, 4
and edx, 3
.bpp2i_horz.begin:
push ebx edx esi
mov eax, 3
add edi, esi
sub edi, 1
mov ebx, [ebx + Image.Width]
shr ebx, 1
.bpp2i_horz.pixel:
push ebx ecx
mov ebx, 3
mov ecx, edx
shl ebx, cl
shl ebx, cl
and bl, [edi]
shr ebx, cl
shr ebx, cl
mov bh, 3
mov ecx, eax
shl ebx, cl
shl ebx, cl
not bh
and bh, [esi]
or bl, bh
mov bh, [esi]
mov [esi], bl
shr ebx, 8
shr ebx, cl
shr ebx, cl
and ebx, 3
mov bh, 3
mov ecx, edx
shl ebx, cl
shl ebx, cl
not bh
and bh, [edi]
or bl, bh
mov [edi], bl
pop ecx ebx
.bpp2i_horz.pixel_done:
inc edx
and edx, 3
jnz @f
dec edi
@@:
dec eax
jns @f
mov eax, 3
inc esi
@@:
dec ebx
jnz .bpp2i_horz.pixel
pop esi edx ebx
add esi, [scanline_len]
mov edi, [scanline_len]
dec ecx
jnz .bpp2i_horz.begin
jmp .exit
.bpp4i_horz:
mov edi, [scanline_len]
mov edx, [ebx + Image.Width]
and edx, 1
neg edx
add edx, 2
and edx, 1
.bpp4i_horz.begin:
push ebx edx esi
mov eax, 1
add edi, esi
sub edi, 1
mov ebx, [ebx + Image.Width]
shr ebx, 1
.bpp4i_horz.pixel:
push ebx ecx
mov ebx, 15
mov ecx, edx
shl ecx, 2
shl ebx, cl
and bl, [edi]
shr ebx, cl
mov bh, 15
mov ecx, eax
shl ecx, 2
shl ebx, cl
not bh
and bh, [esi]
or bl, bh
mov bh, [esi]
mov [esi], bl
shr ebx, 8
shr ebx, cl
and ebx, 15
mov bh, 15
mov ecx, edx
shl ecx, 2
shl ebx, cl
not bh
and bh, [edi]
or bl, bh
mov [edi], bl
pop ecx ebx
.bpp4i_horz.pixel_done:
inc edx
and edx, 1
jnz @f
dec edi
@@:
dec eax
jns @f
mov eax, 1
inc esi
@@:
dec ebx
jnz .bpp4i_horz.pixel
pop esi edx ebx
add esi, [scanline_len]
mov edi, [scanline_len]
dec ecx
jnz .bpp4i_horz.begin
jmp .exit
.exit:
xor eax, eax
inc eax
pop edi esi ebx
ret
.error:
xor eax, eax
pop edi esi ebx
ret
endp
;;================================================================================================;;
proc img.flip _img, _flip_kind ;//////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Flip all layers of image ;;
;;------------------------------------------------------------------------------------------------;;
;> _img = pointer to image ;;
;> _flip_kind = one of FLIP_* constants ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = false / true ;;
;;================================================================================================;;
push 1
mov ebx, [_img]
@@:
mov eax, [ebx + Image.Previous]
test eax, eax
jz .loop
mov ebx, eax
jmp @b
.loop:
stdcall img.flip.layer, ebx, [_flip_kind]
test eax, eax
jnz @f
mov byte [esp], 0
@@:
mov ebx, [ebx + Image.Next]
test ebx, ebx
jnz .loop
pop eax
ret
endp
;;================================================================================================;;
proc img.rotate.layer _img, _rotate_kind ;////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Rotate image layer ;;
;;------------------------------------------------------------------------------------------------;;
;> _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
mov ebx, [_img]
stdcall img._.validate, ebx
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 eax, [ebx + Image.Height]
mov [scanline_pixels_new], eax
call img._.get_scanline_len
mov [scanline_len_new], eax
invoke mem.alloc, eax
or eax, eax
jz .error
mov [line_buffer], eax
mov eax, [ebx + Image.Width]
mov ecx, eax
call img._.get_scanline_len
mov [scanline_len_old], eax
mov eax, [scanline_len_new]
imul eax, ecx
add eax, [ebx + Image.Data]
mov [pixels_ptr], eax
cmp [ebx + Image.Type], Image.bpp1
jz .rotate_ccw1
cmp [ebx + Image.Type], Image.bpp2i
jz .rotate_ccw2i
cmp [ebx + Image.Type], Image.bpp4i
jz .rotate_ccw4i
cmp [ebx + Image.Type], Image.bpp8i
jz .rotate_ccw8ig
cmp [ebx + Image.Type], Image.bpp8g
jz .rotate_ccw8ig
cmp [ebx + Image.Type], Image.bpp24
jz .rotate_ccw24
cmp [ebx + Image.Type], Image.bpp32
jz .rotate_ccw32
.next_column_ccw_low1x:
dec ecx
js .exchange_dims
push ecx
mov edx, [scanline_len_old]
add [scanline_len_old], -2
mov ecx, [scanline_pixels_new]
mov esi, [ebx + Image.Data]
mov edi, [line_buffer]
@@: mov ax, [esi]
mov [edi], ax
add esi, edx
add edi, 2
sub ecx, 1
jnz @b
mov eax, [scanline_pixels_new]
mov edi, [ebx + Image.Data]
lea esi, [edi + 2]
mov edx, [scanline_len_old]
@@: mov ecx, edx
shr ecx, 2
rep movsd
mov ecx, edx
and ecx, 3
rep movsb
add esi, 1
sub eax, 1
jnz @b
mov eax, [scanline_len_new]
sub [pixels_ptr], eax
mov ecx, [scanline_pixels_new]
mov esi, [line_buffer]
mov edi, [pixels_ptr]
mov edx, ecx
shr ecx, 2
rep movsd
mov ecx, edx
and ecx, 3
rep movsb
pop ecx
jmp .next_column_ccw_low1x
.rotate_ccw32:
.next_column_ccw_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, [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_ccw8ig:
.next_column_ccw_low8ig:
dec ecx
js .exchange_dims
push ecx
mov edx, [scanline_len_old]
add [scanline_len_old], -1
mov ecx, [scanline_pixels_new]
mov esi, [ebx + Image.Data]
mov edi, [line_buffer]
@@: mov al, [esi]
mov [edi], al
add esi, edx
add edi, 1
sub ecx, 1
jnz @b
mov eax, [scanline_pixels_new]
mov edi, [ebx + Image.Data]
lea esi, [edi + 1]
mov edx, [scanline_len_old]
@@: mov ecx, edx
shr ecx, 2
rep movsd
mov ecx, edx
and ecx, 3
rep movsb
add esi, 1
sub eax, 1
jnz @b
mov eax, [scanline_len_new]
sub [pixels_ptr], eax
mov ecx, [scanline_pixels_new]
mov esi, [line_buffer]
mov edi, [pixels_ptr]
mov edx, ecx
shr ecx, 2
rep movsd
mov ecx, edx
and ecx, 3
rep movsb
pop ecx
jmp .next_column_ccw_low8ig
.rotate_ccw24:
.next_column_ccw_low24:
dec ecx
js .exchange_dims
push ecx
mov edx, [scanline_len_old]
add [scanline_len_old], -3
mov ecx, [scanline_pixels_new]
mov esi, [ebx + Image.Data]
mov edi, [line_buffer]
@@: mov al, [esi]
mov [edi], al
mov al, [esi+1]
mov [edi+1], al
mov al, [esi+2]
mov [edi+2], al
add esi, edx
add edi, 3
sub ecx, 1
jnz @b
mov eax, [scanline_pixels_new]
mov edi, [ebx + Image.Data]
lea esi, [edi + 3]
mov edx, [scanline_len_old]
@@: mov ecx, edx
shr ecx, 2
rep movsd
mov ecx, edx
and ecx, 3
rep movsb
add esi, 3
sub eax, 1
jnz @b
mov eax, [scanline_len_new]
sub [pixels_ptr], eax
mov ecx, eax
mov esi, [line_buffer]
mov edi, [pixels_ptr]
shr ecx, 2
rep movsd
mov ecx, eax
and ecx, 3
rep movsb
pop ecx
jmp .next_column_ccw_low24
.rotate_ccw1:
push ecx edx
mov eax, [ebx + Image.Height]
add eax, 7
shr eax, 3
imul eax, [ebx + Image.Width]
push eax ; save new data size
invoke mem.alloc, eax
or eax, eax
jz .error
push eax ; save pointer to new data
mov ecx, [ebx + Image.Width]
and ecx, 7
neg ecx
add ecx, 8
and ecx, 7
mov edi, eax
mov esi, [ebx + Image.Data]
mov eax, 7
mov edx, [scanline_len_old]
dec edx
add esi, edx
.rotate_ccw1.begin:
bt [esi], ecx
jc .rotate_ccw1.one
.rotate_ccw1.zero:
btr [edi], eax
jmp @f
.rotate_ccw1.one:
bts [edi], eax
@@:
add esi, [scanline_len_old]
dec [scanline_pixels_new]
jz .rotate_ccw1.end_of_line
sub eax, 1
adc edi, 0
and eax, 7
jmp .rotate_ccw1.begin
.rotate_ccw1.end_of_line:
inc edi
mov eax, [ebx + Image.Height]
mov [scanline_pixels_new], eax
mov eax, 7
inc ecx
and ecx, 7
jz @f
mov esi, [ebx + Image.Data]
add esi, edx
jmp .rotate_ccw1.begin
@@:
dec edx
js .rotate_ccw1.quit
mov esi, [ebx + Image.Data]
add esi, edx
jmp .rotate_ccw1.begin
.rotate_ccw1.quit:
pop esi ; get pointer to new data
mov edi, [ebx + Image.Data]
pop ecx ; get new data size
rep movsb
invoke mem.free, esi
pop edx ecx
jmp .exchange_dims
.rotate_ccw2i:
push ecx edx
mov eax, [ebx + Image.Height]
add eax, 3
shr eax, 2
imul eax, [ebx + Image.Width]
push eax ; save new data size
invoke mem.alloc, eax
or eax, eax
jz .error
push eax ; save pointer to new data
mov ecx, [ebx + Image.Width]
and ecx, 3
neg ecx
add ecx, 4
and ecx, 3
mov edi, eax
mov esi, [ebx + Image.Data]
mov eax, 3
mov edx, [scanline_len_old]
dec edx
add esi, edx
.rotate_ccw2i.begin:
push ebx ecx
mov ebx, 3
shl ebx, cl
shl ebx, cl
and bl, [esi]
shr ebx, cl
shr ebx, cl
mov bh, 3
mov ecx, eax
shl ebx, cl
shl ebx, cl
not bh
and bh, [edi]
or bl, bh
mov [edi], bl
pop ecx ebx
add esi, [scanline_len_old]
dec [scanline_pixels_new]
jz .rotate_ccw2i.end_of_line
sub eax, 1
adc edi, 0
and eax, 3
jmp .rotate_ccw2i.begin
.rotate_ccw2i.end_of_line:
inc edi
mov eax, 3
mov esi, [ebx + Image.Height]
mov [scanline_pixels_new], esi
inc ecx
and ecx, 3
jz @f
mov esi, [ebx + Image.Data]
add esi, edx
jmp .rotate_ccw2i.begin
@@:
dec edx
js .rotate_ccw2i.quit
mov esi, [ebx + Image.Data]
add esi, edx
jmp .rotate_ccw2i.begin
.rotate_ccw2i.quit:
pop esi ; get pointer to new data
mov edi, [ebx + Image.Data]
pop ecx ; get new data size
rep movsb
invoke mem.free, esi
pop edx ecx
jmp .exchange_dims
.rotate_ccw4i:
push ecx edx
mov eax, [ebx + Image.Height]
add eax, 1
shr eax, 1
imul eax, [ebx + Image.Width]
push eax ; save new data size
invoke mem.alloc, eax
or eax, eax
jz .error
push eax ; save pointer to new data
mov ecx, [ebx + Image.Width]
and ecx, 1
neg ecx
add ecx, 2
and ecx, 1
mov edi, eax
mov esi, [ebx + Image.Data]
mov eax, 1
mov edx, [scanline_len_old]
dec edx
add esi, edx
.rotate_ccw4i.begin:
push ebx ecx
mov ebx, 15
shl ecx, 2
shl ebx, cl
and bl, [esi]
shr ebx, cl
mov bh, 15
mov ecx, eax
shl ecx, 2
shl ebx, cl
not bh
and bh, [edi]
or bl, bh
mov [edi], bl
pop ecx ebx
add esi, [scanline_len_old]
dec [scanline_pixels_new]
jz .rotate_ccw4i.end_of_line
sub eax, 1
adc edi, 0
and eax, 1
jmp .rotate_ccw4i.begin
.rotate_ccw4i.end_of_line:
inc edi
mov eax, 1
mov esi, [ebx + Image.Height]
mov [scanline_pixels_new], esi
inc ecx
and ecx, 1
jz @f
mov esi, [ebx + Image.Data]
add esi, edx
jmp .rotate_ccw4i.begin
@@:
dec edx
js .rotate_ccw4i.quit
mov esi, [ebx + Image.Data]
add esi, edx
jmp .rotate_ccw4i.begin
.rotate_ccw4i.quit:
pop esi ; get pointer to new data
mov edi, [ebx + Image.Data]
pop ecx ; get new data size
rep movsb
invoke mem.free, esi
pop edx ecx
jmp .exchange_dims
.rotate_cw_low:
mov eax, [ebx + Image.Height]
mov [scanline_pixels_new], eax
call img._.get_scanline_len
mov [scanline_len_new], eax
invoke mem.alloc, eax
or eax, eax
jz .error
mov [line_buffer], eax
mov eax, [ebx + Image.Width]
mov ecx, eax
call img._.get_scanline_len
mov [scanline_len_old], eax
mov eax, [scanline_len_new]
imul eax, ecx
add eax, [ebx + Image.Data]
mov [pixels_ptr], eax
cmp [ebx + Image.Type], Image.bpp1
jz .rotate_cw1
cmp [ebx + Image.Type], Image.bpp2i
jz .rotate_cw2i
cmp [ebx + Image.Type], Image.bpp4i
jz .rotate_cw4i
cmp [ebx + Image.Type], Image.bpp8i
jz .rotate_cw8ig
cmp [ebx + Image.Type], Image.bpp8g
jz .rotate_cw8ig
cmp [ebx + Image.Type], Image.bpp24
jz .rotate_cw24
cmp [ebx + Image.Type], Image.bpp32
jz .rotate_cw32
.next_column_cw_low1x:
dec ecx
js .exchange_dims
push ecx
mov edx, [scanline_len_old]
add [scanline_len_old], -2
mov ecx, [scanline_pixels_new]
mov esi, [pixels_ptr]
add esi, -2
mov edi, [line_buffer]
@@: mov ax, [esi]
mov [edi], ax
sub esi, edx
add edi, 2
sub ecx, 1
jnz @b
mov eax, [scanline_pixels_new]
dec eax
mov edi, [ebx + Image.Data]
add edi, [scanline_len_old]
lea esi, [edi + 2]
mov edx, [scanline_len_old]
@@: mov ecx, edx
shr ecx, 2
rep movsd
mov ecx, edx
and ecx, 3
rep movsb
add esi, 3
sub eax, 1
jnz @b
mov eax, [scanline_len_new]
sub [pixels_ptr], eax
mov ecx, eax
mov esi, [line_buffer]
mov edi, [pixels_ptr]
shr ecx, 2
rep movsd
mov ecx, eax
and ecx, 3
rep movsb
pop ecx
jmp .next_column_cw_low1x
.rotate_cw32:
.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
.rotate_cw8ig:
.next_column_cw_low8ig:
dec ecx
js .exchange_dims
push ecx
mov edx, [scanline_len_old]
add [scanline_len_old], -1
mov ecx, [scanline_pixels_new]
mov esi, [pixels_ptr]
add esi, -1
mov edi, [line_buffer]
@@: mov al, [esi]
mov [edi], al
sub esi, edx
add edi, 1
sub ecx, 1
jnz @b
mov eax, [scanline_pixels_new]
dec eax
mov edi, [ebx + Image.Data]
add edi, [scanline_len_old]
lea esi, [edi + 1]
mov edx, [scanline_len_old]
@@: mov ecx, edx
shr ecx, 2
rep movsd
mov ecx, edx
and ecx, 3
rep movsb
add esi, 1
sub eax, 1
jnz @b
mov eax, [scanline_len_new]
sub [pixels_ptr], eax
mov ecx, eax
mov esi, [line_buffer]
mov edi, [pixels_ptr]
shr ecx, 2
rep movsd
mov ecx, eax
and ecx, 3
rep movsb
pop ecx
jmp .next_column_cw_low8ig
.rotate_cw24:
.next_column_cw_low24:
dec ecx
js .exchange_dims
push ecx
mov edx, [scanline_len_old]
add [scanline_len_old], -3
mov ecx, [scanline_pixels_new]
mov esi, [pixels_ptr]
add esi, -3
mov edi, [line_buffer]
@@: mov al, [esi]
mov [edi], al
mov al, [esi+1]
mov [edi+1], al
mov al, [esi+2]
mov [edi+2], al
sub esi, edx
add edi, 3
sub ecx, 1
jnz @b
mov eax, [scanline_pixels_new]
dec eax
mov edi, [ebx + Image.Data]
add edi, [scanline_len_old]
lea esi, [edi + 3]
mov edx, [scanline_len_old]
@@: mov ecx, edx
shr ecx, 2
rep movsd
mov ecx, edx
and ecx, 3
rep movsb
add esi, 3
sub eax, 1
jnz @b
mov eax, [scanline_len_new]
sub [pixels_ptr], eax
mov ecx, eax
mov esi, [line_buffer]
mov edi, [pixels_ptr]
shr ecx, 2
rep movsd
mov ecx, eax
and ecx, 3
rep movsb
pop ecx
jmp .next_column_cw_low24
.rotate_cw1:
push ecx edx
mov eax, [ebx + Image.Height]
add eax, 7
shr eax, 3
imul [ebx + Image.Width]
push eax ; save new data size
invoke mem.alloc, eax
or eax, eax
jz .error
push eax ; save pointer to new data
mov edi, eax
mov esi, [ebx + Image.Data]
mov eax, [ebx + Image.Height]
dec eax
imul eax, [scanline_len_old]
add esi, eax
mov eax, 7
mov ecx, 7
mov edx, 0
.rotate_cw1.begin:
bt [esi], ecx
jc .rotate_cw1.one
.rotate_cw1.zero:
btr [edi], eax
jmp @f
.rotate_cw1.one:
bts [edi], eax
@@:
sub esi, [scanline_len_old]
dec [scanline_pixels_new]
jz .rotate_cw1.end_of_line
sub eax, 1
adc edi, 0
and eax, 7
jmp .rotate_cw1.begin
.rotate_cw1.end_of_line:
inc edi
mov eax, [ebx + Image.Height]
mov [scanline_pixels_new], eax
mov eax, 7
dec ecx
jns @f
mov ecx, 7
inc edx
cmp edx, [scanline_len_old]
je .rotate_cw1.quit
@@:
mov esi, [ebx + Image.Height]
dec esi
imul esi, [scanline_len_old]
add esi, [ebx + Image.Data]
add esi, edx
jmp .rotate_cw1.begin
.rotate_cw1.quit:
pop eax ; get pointer to new data
mov esi, eax
mov edi, [ebx + Image.Data]
pop ecx ; get new data size
rep movsb
invoke mem.free, eax
pop edx ecx
jmp .exchange_dims
.rotate_cw2i:
push ecx edx
mov eax, [ebx + Image.Height]
add eax, 3
shr eax, 2
imul [ebx + Image.Width]
push eax ; save new data size
invoke mem.alloc, eax
or eax, eax
jz .error
push eax ; save pointer to new data
mov edi, eax
mov esi, [ebx + Image.Data]
mov eax, [ebx + Image.Height]
dec eax
imul eax, [scanline_len_old]
add esi, eax
mov eax, 3
mov ecx, 3
mov edx, 0
.rotate_cw2i.begin:
push ebx ecx
mov ebx, 3
shl ebx, cl
shl ebx, cl
and bl, [esi]
shr ebx, cl
shr ebx, cl
mov bh, 3
mov ecx, eax
shl ebx, cl
shl ebx, cl
not bh
and bh, [edi]
or bl, bh
mov [edi], bl
pop ecx ebx
sub esi, [scanline_len_old]
dec [scanline_pixels_new]
jz .rotate_cw2i.end_of_line
sub eax, 1
adc edi, 0
and eax, 3
jmp .rotate_cw2i.begin
.rotate_cw2i.end_of_line:
inc edi
mov eax, [ebx + Image.Height]
mov [scanline_pixels_new], eax
mov eax, 3
dec ecx
jns @f
mov ecx, 3
inc edx
cmp edx, [scanline_len_old]
je .rotate_cw2i.quit
@@:
mov esi, [ebx + Image.Height]
dec esi
imul esi, [scanline_len_old]
add esi, [ebx + Image.Data]
add esi, edx
jmp .rotate_cw2i.begin
.rotate_cw2i.quit:
pop eax ; get pointer to new data
mov esi, eax
mov edi, [ebx + Image.Data]
pop ecx ; get new data size
rep movsb
invoke mem.free, eax
pop edx ecx
jmp .exchange_dims
.rotate_cw4i:
push ecx edx
mov eax, [ebx + Image.Height]
add eax, 1
shr eax, 1
imul [ebx + Image.Width]
push eax ; save new data size
invoke mem.alloc, eax
or eax, eax
jz .error
push eax ; save pointer to new data
mov edi, eax
mov esi, [ebx + Image.Data]
mov eax, [ebx + Image.Height]
dec eax
imul eax, [scanline_len_old]
add esi, eax
mov eax, 1
mov ecx, 1
mov edx, 0
.rotate_cw4i.begin:
push ebx ecx
mov ebx, 15
shl ecx, 2
shl ebx, cl
and bl, [esi]
shr ebx, cl
mov bh, 15
mov ecx, eax
shl ecx, 2
shl ebx, cl
not bh
and bh, [edi]
or bl, bh
mov [edi], bl
pop ecx ebx
sub esi, [scanline_len_old]
dec [scanline_pixels_new]
jz .rotate_cw4i.end_of_line
sub eax, 1
adc edi, 0
and eax, 1
jmp .rotate_cw4i.begin
.rotate_cw4i.end_of_line:
inc edi
mov eax, [ebx + Image.Height]
mov [scanline_pixels_new], eax
mov eax, 1
dec ecx
jns @f
mov ecx, 1
inc edx
cmp edx, [scanline_len_old]
je .rotate_cw4i.quit
@@:
mov esi, [ebx + Image.Height]
dec esi
imul esi, [scanline_len_old]
add esi, [ebx + Image.Data]
add esi, edx
jmp .rotate_cw4i.begin
.rotate_cw4i.quit:
pop eax ; get pointer to new data
mov esi, eax
mov edi, [ebx + Image.Data]
pop ecx ; get new data size
rep movsb
invoke mem.free, eax
pop edx ecx
jmp .exchange_dims
.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
;;================================================================================================;;
proc img.rotate _img, _rotate_kind ;//////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Rotate all layers of image ;;
;;------------------------------------------------------------------------------------------------;;
;> _img = pointer to image ;;
;> _rotate_kind = one of ROTATE_* constants ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = false / true ;;
;;================================================================================================;;
push 1
mov ebx, [_img]
@@:
mov eax, [ebx + Image.Previous]
test eax, eax
jz .loop
mov ebx, eax
jmp @b
.loop:
stdcall img.rotate.layer, ebx, [_rotate_kind]
test eax, eax
jnz @f
mov byte [esp], 0
@@:
mov ebx, [ebx + Image.Next]
test ebx, ebx
jnz .loop
pop eax
ret
endp
;;================================================================================================;;
proc img.draw _img, _x, _y, _width, _height, _xpos, _ypos ;///////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Draw image in the window ;;
;;------------------------------------------------------------------------------------------------;;
;> _img = pointer to image ;;
;>_x = x-coordinate in the window ;;
;>_y = y-coordinate in the window ;;
;>_width = maximum width to draw ;;
;>_height = maximum height to draw ;;
;>_xpos = offset in image by x-axis ;;
;>_ypos = offset in image by y-axis ;;
;;------------------------------------------------------------------------------------------------;;
;< no return value ;;
;;================================================================================================;;
push ebx esi edi
mov ebx, [_img]
stdcall img._.validate, ebx
test eax, eax
jnz .done
mov ecx, [ebx + Image.Width]
sub ecx, [_xpos]
jbe .done
cmp ecx, [_width]
jb @f
mov ecx, [_width]
@@:
mov edx, [ebx + Image.Height]
sub edx, [_ypos]
jbe .done
cmp edx, [_height]
jb @f
mov edx, [_height]
@@:
mov eax, [ebx + Image.Width]
sub eax, ecx
call img._.get_scanline_len
shl ecx, 16
add ecx, edx
push eax
mov eax, [ebx + Image.Width]
imul eax, [_ypos]
add eax, [_xpos]
call img._.get_scanline_len
add eax, [ebx + Image.Data]
mov edx, [_x - 2]
mov dx, word [_y]
mov esi, [ebx + Image.Type]
mov esi, [type2bpp + (esi-1)*4]
mov edi, [ebx + Image.Palette]
xchg eax, ebx
pop eax
push ebp
push 65
pop ebp
xchg eax, ebp
int 40h
pop ebp
.done:
pop edi esi ebx
ret
endp
align 4
img.formats_table:
.bmp dd LIBIMG_FORMAT_BMP, img.is.bmp, img.decode.bmp, img.encode.bmp, 1 + (1 SHL Image.bpp24) + (1 SHL Image.bpp32)
.ico dd LIBIMG_FORMAT_ICO, img.is.ico, img.decode.ico_cur, img.encode.ico, 0
.cur dd LIBIMG_FORMAT_CUR, img.is.cur, img.decode.ico_cur, img.encode.cur, 0
.gif dd LIBIMG_FORMAT_GIF, img.is.gif, img.decode.gif, img.encode.gif, 0
.png dd LIBIMG_FORMAT_PNG, img.is.png, img.decode.png, img.encode.png, 0
.jpg dd LIBIMG_FORMAT_JPEG, img.is.jpg, img.decode.jpg, img.encode.jpg, 0
.tga dd LIBIMG_FORMAT_TGA, img.is.tga, img.decode.tga, img.encode.tga, 0
.pcx dd LIBIMG_FORMAT_PCX, img.is.pcx, img.decode.pcx, img.encode.pcx, 0
.xcf dd LIBIMG_FORMAT_XCF, img.is.xcf, img.decode.xcf, img.encode.xcf, 0
.tiff dd LIBIMG_FORMAT_TIFF, img.is.tiff, img.decode.tiff, img.encode.tiff,0
.pnm dd LIBIMG_FORMAT_PNM, img.is.pnm, img.decode.pnm, img.encode.pnm, 1 + (1 SHL Image.bpp1) + (1 SHL Image.bpp8g) + (1 SHL Image.bpp24)
.wbmp dd LIBIMG_FORMAT_WBMP, img.is.wbmp, img.decode.wbmp, img.encode.wbmp,0
.xbm dd LIBIMG_FORMAT_XBM, img.is.xbm, img.decode.xbm, img.encode.xbm, 0
.z80 dd LIBIMG_FORMAT_Z80, img.is.z80, img.decode.z80, img.encode.z80, 0 ;this must be the last entry as there are no signatures in z80 screens at all
dd 0
align 4
img.types_table: ; entries order must correspond to type defnitions in libimg.inc
dd 0 ; there is no Image.bpp* = 0
.bpp8i dd (1 SHL Image.bpp24)
.bpp24 dd (1 SHL Image.bpp24) OR (1 SHL Image.bpp8g)
.bpp32 dd (1 SHL Image.bpp24)
.bpp15 dd (1 SHL Image.bpp24)
.bpp16 dd (1 SHL Image.bpp24)
.bpp1 dd (1 SHL Image.bpp24)
.bpp8g dd (1 SHL Image.bpp24) OR (1 SHL Image.bpp1 )
.bpp8a dd (1 SHL Image.bpp24)
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
;! 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
test eax, eax
jz @f
push ecx
xor ecx, ecx
mov [eax + Image.Data], ecx
mov [eax + Image.Type], ecx
mov [eax + Image.Flags], ecx
mov [eax + Image.Extended], ecx
mov [eax + Image.Previous], ecx
mov [eax + Image.Next], ecx
pop ecx
@@:
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 esi
mov ebx, [_img]
mov eax, [_height]
; our memory is limited, [_width]*[_height] must not overflow
; image with width or height greater than 65535 is most likely bogus
cmp word [_width+2], 0
jnz .error
cmp word [_height+2], 0
jnz .error
imul eax, [_width]
test eax, eax
jz .error
cmp [ebx + Image.Type], Image.bpp1
jz .bpp1
cmp [ebx + Image.Type], Image.bpp2i
jz .bpp2i
cmp [ebx + Image.Type], Image.bpp4i
jz .bpp4i
cmp [ebx + Image.Type], Image.bpp8i
jz .bpp8i
cmp [ebx + Image.Type], Image.bpp8g
jz .bpp8g
cmp [ebx + Image.Type], Image.bpp8a
jz .bpp8a
cmp [ebx + Image.Type], Image.bpp24
jz .bpp24
.bpp32:
shl eax, 2
jmp @f
.bpp24:
lea eax, [eax*3]
jmp @f
.bpp8i:
add eax, 256*4 ; for palette
.bpp8g:
jmp @f
.bpp8a:
shl eax, 1
jmp @f
.bpp4i:
mov eax, [_width]
add eax, 1
shr eax, 1
imul eax, [_height]
mov ecx, eax
mov eax, [_height]
add eax, 1
shr eax, 1
imul eax, [_width]
cmp eax, ecx
jge .bpp4i.skip
mov eax, ecx
.bpp4i.skip:
add eax, 16*4 ; for palette
jmp @f
.bpp2i:
mov eax, [_width]
add eax, 3
shr eax, 2
imul eax, [_height]
mov ecx, eax
mov eax, [_height]
add eax, 3
shr eax, 2
imul eax, [_width]
cmp eax, ecx
jge .bpp2i.skip
mov eax, ecx
.bpp2i.skip:
add eax, 4*4 ; for palette
jmp @f
.bpp1:
mov eax, [_width]
add eax, 7
shr eax, 3
imul eax, [_height]
mov ecx, eax
mov eax, [_height]
add eax, 7
shr eax, 3
imul eax, [_width]
cmp eax, ecx
jge .bpp1.skip
mov eax, ecx
.bpp1.skip:
add eax, 2*4 ; for palette
@@:
mov esi, eax
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]
cmp [ebx + Image.Type], Image.bpp8i
jnz @f
lea esi, [eax + esi - 256*4]
mov [ebx + Image.Palette], esi
jmp .ret
@@:
cmp [ebx + Image.Type], Image.bpp1
jnz @f
lea esi, [eax + esi - 2*4]
mov [ebx + Image.Palette], esi
jmp .ret
@@:
cmp [ebx + Image.Type], Image.bpp2i
jnz @f
lea esi, [eax + esi - 4*4]
mov [ebx + Image.Palette], esi
jmp .ret
@@:
cmp [ebx + Image.Type], Image.bpp4i
jnz .ret
lea esi, [eax + esi - 16*4]
mov [ebx + Image.Palette], esi
jmp .ret
.error:
xor eax, eax
.ret:
pop esi ebx
ret
endp
;;================================================================================================;;
img._.get_scanline_len: ;/////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;> --- TBD --- ;;
;;------------------------------------------------------------------------------------------------;;
;< --- TBD --- ;;
;;================================================================================================;;
cmp [ebx + Image.Type], Image.bpp1
jz .bpp1.1
cmp [ebx + Image.Type], Image.bpp2i
jz .bpp2i.1
cmp [ebx + Image.Type], Image.bpp4i
jz .bpp4i.1
cmp [ebx + Image.Type], Image.bpp8i
jz .bpp8.1
cmp [ebx + Image.Type], Image.bpp8g
jz .bpp8.1
cmp [ebx + Image.Type], Image.bpp8a
jz .bpp8a.1
cmp [ebx + Image.Type], Image.bpp24
jz .bpp24.1
add eax, eax
cmp [ebx + Image.Type], Image.bpp32
jnz .quit
add eax, eax
jmp .quit
.bpp24.1:
lea eax, [eax*3]
jmp .quit
.bpp1.1:
add eax, 7
shr eax, 3
jmp .quit
.bpp2i.1:
add eax, 3
shr eax, 2
jmp .quit
.bpp4i.1:
add eax, 1
shr eax, 1
jmp .quit
.bpp8a.1:
shl eax, 1
.bpp8.1:
.quit:
ret
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
;! Below is private data you should never use directly from your code ;;
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
align 4
type2bpp dd 8, 24, 32, 15, 16, 1, 9, 2, 4
img._.do_rgb.handlers:
dd img._.do_rgb.bpp8i
dd img._.do_rgb.bpp24
dd img._.do_rgb.bpp32
dd img._.do_rgb.bpp15.amd ; can be overwritten in lib_init
dd img._.do_rgb.bpp16.amd ; can be overwritten in lib_init
dd img._.do_rgb.bpp1
dd img._.do_rgb.bpp8g
dd img._.do_rgb.bpp2i
dd img._.do_rgb.bpp4i
img.flip.layer.handlers_horz:
dd img.flip.layer.bpp8ig_horz
dd img.flip.layer.bpp24_horz
dd img.flip.layer.bpp32_horz
dd img.flip.layer.bpp1x_horz
dd img.flip.layer.bpp1x_horz
dd img.flip.layer.bpp1_horz
dd img.flip.layer.bpp8ig_horz
dd img.flip.layer.bpp2i_horz
dd img.flip.layer.bpp4i_horz
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
;! Exported functions section ;;
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
align 4
@EXPORT:
export \
lib_init , 'lib_init' , \
0x00050007 , '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.to_rgb2 , 'img_to_rgb2' , \
img.decode , 'img_decode' , \
img.encode , 'img_encode' , \
img.create , 'img_create' , \
img.destroy , 'img_destroy' , \
img.destroy.layer, 'img_destroy_layer', \
img.count , 'img_count' , \
img.lock_bits , 'img_lock_bits' , \
img.unlock_bits , 'img_unlock_bits' , \
img.flip , 'img_flip' , \
img.flip.layer , 'img_flip_layer' , \
img.rotate , 'img_rotate' , \
img.rotate.layer , 'img_rotate_layer' , \
img.draw , 'img_draw' , \
img.scale , 'img_scale' , \
img.convert , 'img_convert' , \
img.formats_table, 'img_formats_table'
; import from deflate unpacker
; is initialized only when PNG loading is requested
align 4
@IMPORT:
library archiver, 'archiver.obj'
import archiver, \
deflate_unpack2, 'deflate_unpack2'
align 4
; mutex for unpacker loading
deflate_loader_mutex dd 0
; default palette for GIF - b&w
gif_default_palette:
db 0, 0, 0
db 0xFF, 0xFF, 0xFF
section '.data' data readable writable align 16
; uninitialized data - global constant tables
mem.alloc dd ?
mem.free dd ?
mem.realloc dd ?
dll.load dd ?
; data for YCbCr -> RGB translation
color_table_1 rd 256
color_table_2 rd 256
color_table_3 rd 256
color_table_4 rd 256