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kolibrios/programs/develop/libraries/libs-dev/libimg/xcf/xcf.asm
Ivan Baravy 185caf04b2 libimg: 
new image type: grayscale (Image.bpp9)
tiff fixes for grayscale+alpha images
xcf regression bug fixed (screen mode blending, r2388)


git-svn-id: svn://kolibrios.org@2733 a494cfbc-eb01-0410-851d-a64ba20cac60
2012-06-04 03:54:14 +00:00

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;;================================================================================================;;
;;//// xcf.asm //// (c) dunkaist, 2011-2012 //////////////////////////////////////////////////////;;
;;================================================================================================;;
;; ;;
;; 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/>. ;;
;; ;;
;;================================================================================================;;
;; ;;
;; References: ;;
;; 1. "SPECIFICATION OF THE XCF FILE FORMAT" ;;
;; by Henning Makholm ;;
;; http://svn.gnome.org/viewvc/gimp/trunk/devel-docs/xcf.txt?view=markup ;;
;; 2. "Layer Modes" ;;
;; from docs.gimp.org ;;
;; http://docs.gimp.org/en/gimp-concepts-layer-modes.html ;;
;; ;;
;;================================================================================================;;
include 'xcf.inc'
;include '../../../../../system/board/trunk/debug.inc'
COMPOSITE_MODE equ MMX
; MMX | pretty fast and compatible
; SSE | a bit faster, but may be unsupported by some CPUs
MAX_LAYERS = 255
;;================================================================================================;;
proc img.is.xcf _data, _length ;//////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Determine if raw data could be decoded (is in xcf format) ;;
;;------------------------------------------------------------------------------------------------;;
;> _data = raw data as read from file/stream ;;
;> _length = data length ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = false / true ;;
;;================================================================================================;;
push edi
xor eax, eax
mov edi, [_data]
cmp dword[edi + xcf_header.magic_string], 'gimp'
jne .is_not_xcf
cmp dword[edi + xcf_header.magic_string + 4], ' xcf'
jne .is_not_xcf
cmp [edi + xcf_header.version], 'file'
je @f
cmp [edi + xcf_header.version], 'v001'
je @f
cmp [edi + xcf_header.version], 'v002'
je @f
jmp .is_not_xcf
@@:
cmp byte[edi + xcf_header.reserved], 0
jne .is_not_xcf
.is_xcf:
inc eax
.is_not_xcf:
pop edi
ret
endp
;;================================================================================================;;
proc img.decode.xcf _data, _length, _options ;////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Decode data into image if it contains correctly formed raw data in xcf format ;;
;;------------------------------------------------------------------------------------------------;;
;> _data = raw data as read from file/stream ;;
;> _length = data length ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 (error) or pointer to image ;;
;;================================================================================================;;
locals
layer_count rd 1
retvalue rd 1
endl
push ebx esi edi
mov esi, [_data]
add esi, xcf_header.width
lodsd
bswap eax
mov ebx, eax
lodsd
bswap eax
mov edx, eax
lodsd
bswap eax
test eax, eax
jz .process_rgb
dec eax
jz .process_grayscale
dec eax
jz .process_indexed
jmp .error
.process_rgb:
stdcall img.create, ebx, edx, Image.bpp32
mov [retvalue], eax
test eax, eax
jz .error
mov ebx, eax
mov edx, XCF_BASETYPE_RGB
jmp .common_process
.process_grayscale:
stdcall img.create, ebx, edx, Image.bpp8i
mov [retvalue], eax
test eax, eax
jz .error
mov ebx, eax
mov eax, [ebx + Image.Width]
imul [ebx + Image.Height]
shl eax, 1
mov [ebx + Image.Palette], eax
add eax, 256*4
invoke mem.realloc, [ebx + Image.Data], eax
mov [ebx + Image.Data], eax
add [ebx + Image.Palette], eax
mov edi, [ebx + Image.Palette]
mov eax, 0xff000000
@@:
stosd
add eax, 0x00010101
jnc @b
mov edx, XCF_BASETYPE_GRAY
jmp .common_process
.process_indexed:
stdcall img.create, ebx, edx, Image.bpp8i
mov [retvalue], eax
test eax, eax
jz .error
mov ebx, eax
mov eax, [ebx + Image.Width]
imul [ebx + Image.Height]
shl eax, 1
mov [ebx + Image.Palette], eax
add eax, 256*4
invoke mem.realloc, [ebx + Image.Data], eax
mov [ebx + Image.Data], eax
add [ebx + Image.Palette], eax
mov edx, XCF_BASETYPE_INDEXED
; jmp .common_process
.common_process:
invoke mem.alloc, sizeof.xcf_ext
or eax, eax
jz .error
mov [ebx + Image.Extended], eax
mov [eax + xcf_ext.opacity], 0xffffffff
mov [eax + xcf_ext.type], edx
stdcall xcf._.parse_properties, ebx
mov edi, esi
xor eax, eax
mov ecx, MAX_LAYERS
mov [layer_count], MAX_LAYERS-1
repne scasd
sub [layer_count], ecx
mov esi, edi
xor ecx, ecx
.still:
sub esi, 8
lodsd
bswap eax
push ecx
stdcall xcf._.decode_layer, eax, [_data]
pop ecx
test eax, eax
jz @f
push ecx
stdcall xcf._.merge_down, eax, [retvalue], ecx
pop ecx
add ecx, 1
@@:
dec [layer_count]
jnz .still
cmp [ebx + Image.Type], Image.bpp8i
jne .quit
stdcall xcf._.pack_8a, ebx
jmp .quit
.error:
mov [retvalue], 0
.quit:
pop edi esi ebx
mov eax, [retvalue]
ret
endp
;;================================================================================================;;
proc img.encode.xcf _img, _p_length, _options ;///////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? Encode image into raw data in xcf format ;;
;;------------------------------------------------------------------------------------------------;;
;> _img = pointer to image ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = 0 (error) or pointer to encoded data ;;
;< _p_length = encoded data length ;;
;;================================================================================================;;
xor eax, eax
ret
endp
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
;! Below are private procs you should never call directly from your code ;;
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
proc xcf._.parse_properties _img
mov ebx, [_img]
.begin:
lodsd
bswap eax
mov ecx, (xcf._.prop_table_end - xcf._.prop_table_begin)/8
mov edi, xcf._.prop_table_begin
.still:
cmp eax, [edi]
jne @f
jmp dword[edi + 4]
@@:
add edi, 8
dec ecx
jnz .still
lodsd
bswap eax
add esi, eax
jmp .begin
.00: ; PROP_END
lodsd
ret
.01: ; PROP_COLORMAP
lodsd
mov ecx, [ebx + Image.Extended]
cmp [ecx + xcf_ext.type], XCF_BASETYPE_INDEXED
je @f
bswap eax
add esi, eax
jmp xcf._.parse_properties.begin
@@:
lodsd
bswap eax
mov ecx, eax
mov edi, [ebx + Image.Palette]
@@:
lodsd
sub esi, 1
bswap eax
shr eax, 8
or eax, 0xff000000
stosd
dec ecx
jnz @b
jmp xcf._.parse_properties.begin
.06: ; PROP_OPACITY
lodsd
lodsd
bswap eax
mov ecx, [ebx + Image.Extended]
mov [ecx + xcf_ext.opacity], eax
jmp xcf._.parse_properties.begin
.07: ; PROP_MODE
lodsd
lodsd
bswap eax
mov ecx, [ebx + Image.Extended]
mov [ecx + xcf_ext.layer_mode], eax
jmp xcf._.parse_properties.begin
.08: ; PROP_VISIBLE
lodsd
lodsd
bswap eax
mov ecx, [ebx + Image.Extended]
mov [ecx + xcf_ext.visible], eax
jmp xcf._.parse_properties.begin
.11: ; PROP_APPLY_MASK
lodsd
lodsd
bswap eax
mov ecx, [ebx + Image.Extended]
mov [ecx + xcf_ext.apply_mask], eax
jmp xcf._.parse_properties.begin
.15: ; PROP_OFFSETS
lodsd
lodsd
mov ecx, [ebx + Image.Extended]
bswap eax
mov [ecx + xcf_ext.offset_x], eax
lodsd
bswap eax
mov [ecx + xcf_ext.offset_y], eax
jmp xcf._.parse_properties.begin
endp
proc xcf._.decode_channel _channel_begin, _data
locals
channel_width rd 1
channel_height rd 1
planes_todo rd 1
total_bpl rd 1
endl
push ebx esi edi
mov esi, [_channel_begin]
add esi, [_data]
lodsd
bswap eax
mov [channel_width], eax
mov [total_bpl], eax
lodsd
bswap eax
mov [channel_height], eax
lodsd
bswap eax
add esi, eax
stdcall img.create, [channel_width], [channel_height], Image.bpp8i
mov ebx, eax
test ebx, ebx
jz .quit
invoke mem.alloc, sizeof.xcf_ext
or eax, eax
jz .error
mov [ebx + Image.Extended], eax
stdcall xcf._.parse_properties, ebx
lodsd
bswap eax
mov esi, eax
add esi, [_data]
lodsd
lodsd
lodsd
bswap eax
mov [planes_todo], eax
lodsd
bswap eax
mov esi, eax
add esi, [_data]
lodsd
lodsd
mov edi, [ebx + Image.Data]
mov ecx, 0
@@:
lodsd
test eax, eax
jz .quit
bswap eax
add eax, [_data]
stdcall xcf._.decode_tile, eax, [channel_width], [channel_height], [total_bpl], [planes_todo], 1
add ecx, 1
jmp @b
.error:
stdcall img.destroy, ebx
mov ebx, 0
.quit:
mov eax, ebx
pop edi esi ebx
ret
endp
proc xcf._.decode_layer _layer_begin, _data
locals
layer_width rd 1
layer_height rd 1
planes_todo rd 1
total_bpl rd 1
color_step rd 1
endl
push ebx esi edi
mov esi, [_layer_begin]
add esi, [_data]
lodsd
bswap eax
mov [layer_width], eax
mov [total_bpl], eax
shl [total_bpl], 1
lodsd
bswap eax
mov [layer_height], eax
lodsd
bswap eax
mov edx, Image.bpp8a
mov [color_step], 1
cmp eax, 2
jge @f
mov [color_step], 3
mov edx, Image.bpp32
shl [total_bpl], 1
@@:
stdcall img.create, [layer_width], [layer_height], edx
mov ebx, eax
test ebx, ebx
jz .quit
invoke mem.alloc, sizeof.xcf_ext
or eax, eax
jz .error
mov [ebx + Image.Extended], eax
lodsd
bswap eax
add esi, eax
stdcall xcf._.parse_properties, ebx
mov edx, [ebx + Image.Extended]
or [edx + xcf_ext.visible], 0
jz .unvisible
lodsd
bswap eax
push esi
mov esi, eax
add esi, [_data]
lodsd
lodsd
lodsd
bswap eax
mov [planes_todo], eax
; mov ecx, [ebx + Image.Extended]
; mov [ecx + xcf_ext.planes], eax
lodsd
bswap eax
mov esi, eax
add esi, [_data]
lodsd
lodsd
mov edi, [ebx + Image.Data]
mov ecx, 0
@@:
lodsd
test eax, eax
jz @f
bswap eax
add eax, [_data]
stdcall xcf._.decode_tile, eax, [layer_width], [layer_height], [total_bpl], [planes_todo], 0
add ecx, 1
jmp @b
@@:
stdcall xcf._.apply_opacity, ebx, [color_step]
pop esi
lodsd
bswap eax
test eax, eax
jz .quit
stdcall xcf._.decode_channel, eax, [_data]
test eax, eax
jz .error
mov edx, [ebx + Image.Extended]
cmp [edx + xcf_ext.apply_mask], 0
je .quit
stdcall xcf._.apply_alpha_mask, ebx, eax, [color_step]
jmp .quit
.unvisible:
.error:
stdcall img.destroy, ebx
mov ebx, 0
.quit:
mov eax, ebx
pop edi esi ebx
ret
endp
proc xcf._.decode_tile _tile_data, _width, _height, _total_bpl, _bytes_pp, _is_channel
locals
tile_x rd 1
tile_y rd 1
tile_width rd 1
tile_height rd 1
planes_todo rd 1
color_step rd 1
endl
push ebx ecx edx esi edi
pushd [_bytes_pp]
popd [planes_todo]
cmp [_is_channel], 1
je @f
test [_bytes_pp], 0x01
jz @f
add [_bytes_pp], 1
@@:
mov ebx, [_bytes_pp]
sub ebx, 1
mov [color_step], ebx
mov esi, [_tile_data]
mov eax, ecx
mov ebx, [_width]
dec ebx
shr ebx, 6
inc ebx
mov edx, 0
div bx
mov [tile_x], edx
mov [tile_y], eax
mov [tile_width], 64
mov ebx, [_width]
test ebx, 0x0000003F
jz @f
dec ebx
shr ebx, 6
cmp ebx, [tile_x]
jne @f
mov ebx, [_width]
and ebx, 0x0000003F
mov [tile_width], ebx
@@:
mov [tile_height], 64
mov ebx, [_height]
test ebx, 0x0000003F
jz @f
dec ebx
shr ebx, 6
cmp ebx, [tile_y]
jne @f
mov ebx, [_height]
and ebx, 0x0000003F
mov [tile_height], ebx
@@:
mov eax, [_total_bpl]
shl eax, 6
mul [tile_y]
add edi, eax
mov eax, [tile_x]
shl eax, 6
imul eax, [_bytes_pp]
add edi, eax
cmp [_is_channel], 1
jne @f
stdcall xcf._.decode_color, [tile_width], [tile_height], [color_step], [_total_bpl], [_bytes_pp]
jmp .quit
@@:
mov eax, [planes_todo]
dec eax
jz .p1
dec eax
jz .p2
dec eax
jz .p3
jmp .p4
.p1:
stdcall xcf._.decode_color, [tile_width], [tile_height], [color_step], [_total_bpl], [_bytes_pp]
add edi, 1
stdcall xcf._.fill_color, [tile_width], [tile_height], [_total_bpl], [_bytes_pp], [color_step]
jmp .quit
.p2:
stdcall xcf._.decode_color, [tile_width], [tile_height], [color_step], [_total_bpl], [_bytes_pp]
add edi, 1
stdcall xcf._.decode_color, [tile_width], [tile_height], [color_step], [_total_bpl], [_bytes_pp]
jmp .quit
.p3:
add edi, 2
stdcall xcf._.decode_color, [tile_width], [tile_height], [color_step], [_total_bpl], [_bytes_pp]
sub edi, 1
stdcall xcf._.decode_color, [tile_width], [tile_height], [color_step], [_total_bpl], [_bytes_pp]
sub edi, 1
stdcall xcf._.decode_color, [tile_width], [tile_height], [color_step], [_total_bpl], [_bytes_pp]
add edi, 3
stdcall xcf._.fill_color, [tile_width], [tile_height], [_total_bpl], [_bytes_pp], [color_step]
jmp .quit
.p4:
add edi, 2
stdcall xcf._.decode_color, [tile_width], [tile_height], [color_step], [_total_bpl], [_bytes_pp]
sub edi, 1
stdcall xcf._.decode_color, [tile_width], [tile_height], [color_step], [_total_bpl], [_bytes_pp]
sub edi, 1
stdcall xcf._.decode_color, [tile_width], [tile_height], [color_step], [_total_bpl], [_bytes_pp]
add edi, 3
stdcall xcf._.decode_color, [tile_width], [tile_height], [color_step], [_total_bpl], [_bytes_pp]
; jmp .quit
.quit:
pop edi esi edx ecx ebx
ret
endp
proc xcf._.fill_color _tile_width, _tile_height, _total_bpl, _bytes_pp, _color_step
push ebx
mov edx, [_color_step]
mov ebx, [_total_bpl]
mov eax, [_bytes_pp]
mul byte[_tile_width]
sub ebx, eax
mov ch, byte[_tile_height]
mov al, 0xff
.line:
mov cl, byte[_tile_width]
@@:
stosb
add edi, edx
dec cl
jnz @b
add edi, ebx
dec ch
jnz .line
pop ebx
ret
endp
proc xcf._.decode_color _tile_width, _tile_height, _color_step, _total_bpl, _bytes_pp
locals
level_width rd 1
level_height rd 1
line_step rd 1 ; [_total_bpl] - [_tile_width]*[_bytes_pp]
endl
push edi
mov ebx, [_total_bpl]
movzx eax, byte[_bytes_pp]
mul byte[_tile_width]
sub ebx, eax
mov [line_step], ebx
mov ebx, [_tile_height]
mov edx, [_tile_width]
.decode:
lodsb
cmp al, 127
je .long_identical
jb .short_identical
test al, 0x7f
jz .long_different
jmp .short_different
.short_identical:
movzx ecx, al
add ecx, 1
lodsb
jmp .step1
.long_identical:
mov ecx, 0
lodsw
mov cx, ax
xchg cl, ch
lodsb
.step1:
cmp cx, dx
je .step2
jl .step3
xchg cx, dx
sub dx, cx
sub bx, 1
@@:
stosb
add edi, [_color_step]
loop @b
mov cx, dx
mov edx, [_tile_width]
add edi, [line_step]
jmp .step1
.step2:
@@:
stosb
add edi, [_color_step]
loop @b
mov edx, [_tile_width]
add edi, [line_step]
dec bx
jz .quit
jmp .decode
.step3:
sub dx, cx
@@:
stosb
add edi, [_color_step]
loop @b
jmp .decode
.short_different:
movzx ecx, al
neg cx
add cx, 256
jmp .step4
.long_different:
mov ecx, 0
lodsb
mov ch, al
lodsb
mov cl, al
.step4:
cmp cx, dx
je .step5
jl .step6
xchg cx, dx
sub dx, cx
sub bx, 1
@@:
movsb
add edi, [_color_step]
loop @b
mov cx, dx
mov edx, [_tile_width]
add edi, [line_step]
jmp .step4
.step5:
@@:
movsb
add edi, [_color_step]
loop @b
mov edx, [_tile_width]
add edi, [line_step]
dec bx
jz .quit
jmp .decode
.step6:
sub dx, cx
@@:
movsb
add edi, [_color_step]
loop @b
jmp .decode
.quit:
pop edi
ret
endp
proc xcf._.merge_down _img, _bottom, _layer_number
locals
copy_width rd 1
copy_height rd 1
img_x1 rd 1
img_y1 rd 1
bottom_x1 rd 1
bottom_y1 rd 1
img_total_bpl rd 1
bottom_total_bpl rd 1
img_length rd 1
bottom_length rd 1
endl
push ebx esi edi
mov ebx, [_bottom]
mov edx, [_img]
mov [img_x1], 0
push [edx + Image.Width]
pop [img_length]
mov [bottom_x1], 0
mov ecx, [ebx + Image.Width]
mov [bottom_length], ecx
mov eax, [edx + Image.Extended]
movsx eax, word[eax + xcf_ext.offset_x]
cmp eax, 0
jg .greater_x
jl .lesser_x
mov [copy_width], ecx
jmp .done_x
.greater_x:
add [bottom_x1], eax
sub [bottom_length], eax
jns .label_x
mov [copy_width], 0
jmp .done_x
.lesser_x:
sub [img_x1], eax
add [img_length], eax
jns .label_x
mov [copy_width], 0
jmp .done_x
.label_x:
mov ecx, [img_length]
cmp ecx, [bottom_length]
jng @f
mov ecx, [bottom_length]
@@:
mov [copy_width], ecx
.done_x:
mov [img_y1], 0
push [edx + Image.Height]
pop [img_length]
mov [bottom_y1], 0
mov ecx, [ebx + Image.Height]
mov [bottom_length], ecx
mov eax, [edx + Image.Extended]
movsx eax, word[eax + xcf_ext.offset_y]
cmp eax, 0
jg .greater_y
jl .lesser_y
mov [copy_height], ecx
jmp .done_y
.greater_y:
add [bottom_y1], eax
sub [bottom_length], eax
jns .label_y
mov [copy_height], 0
jmp .done_y
.lesser_y:
sub [img_y1], eax
add [img_length], eax
jns .label_y
mov [copy_height], 0
jmp .done_y
.label_y:
mov ecx, [img_length]
cmp ecx, [bottom_length]
jng @f
mov ecx, [bottom_length]
@@:
mov [copy_height], ecx
.done_y:
mov esi, [edx + Image.Data]
mov edi, [ebx + Image.Data]
mov eax, [edx + Image.Width]
imul eax, [img_y1]
add eax, [img_x1]
shl eax, 1
cmp [edx + Image.Width], Image.bpp8a
je @f
shl eax, 1
@@:
add esi, eax
mov eax, [ebx + Image.Width]
imul eax, [bottom_y1]
add eax, [bottom_x1]
shl eax, 1
cmp [ebx + Image.Width], Image.bpp8i
je @f
shl eax, 1
@@:
add edi, eax
mov eax, [edx + Image.Width]
sub eax, [copy_width]
shl eax, 1
cmp [edx + Image.Width], Image.bpp8a
je @f
shl eax, 1
@@:
mov [img_total_bpl], eax
mov eax, [ebx + Image.Width]
sub eax, [copy_width]
shl eax, 1
cmp [ebx + Image.Width], Image.bpp8i
je @f
shl eax, 1
@@:
mov [bottom_total_bpl], eax
cmp [_layer_number], 0
jne .not_first
mov ecx, [copy_width]
imul ecx, [copy_height]
cmp [ebx + Image.Type], Image.bpp8i
je .bpp8a
.bpp32:
rep movsd
jmp .done
.bpp8a:
rep movsw
jmp .done
.not_first:
push edi
mov ecx, [edx + Image.Extended]
mov eax, [ecx + xcf_ext.layer_mode]
mov ecx, [ebx + Image.Extended]
mov ecx, [ecx + xcf_ext.type]
cmp ecx, XCF_BASETYPE_RGB
jne @f
mov edx, 4
jmp .type_defined
@@:
cmp ecx, XCF_BASETYPE_GRAY
jne @f
mov edx, 8
jmp .type_defined
@@:
mov edx, 12
.type_defined:
mov ecx, (xcf._.composite_table.end - xcf._.composite_table.begin) / 8
mov edi, xcf._.composite_table.begin
.still:
cmp eax, [edi]
jne @f
add edi, edx
mov edx, [edi]
jmp .composite_found
@@:
add edi, 16
dec ecx
jnz .still
.composite_found:
pop edi
mov ecx, [ebx + Image.Extended]
cmp [ecx + xcf_ext.type], XCF_BASETYPE_INDEXED
jne @f
stdcall edx, [copy_width], [copy_height], [bottom_total_bpl], [img_total_bpl]
jmp .done
@@:
cmp eax, 1
ja @f
stdcall edx, [copy_width], [copy_height], [bottom_total_bpl], [img_total_bpl]
jmp .done
@@:
cmp [ebx + Image.Type], Image.bpp8i
jne @f
stdcall xcf._.merge_8a, [copy_width], [copy_height], [img_total_bpl], [bottom_total_bpl]
jmp .done
@@:
stdcall xcf._.merge_32, [copy_width], [copy_height], [img_total_bpl], [bottom_total_bpl]
; jmp .done
.done:
stdcall img.destroy, [_img]
pop edi esi ebx
ret
endp
proc xcf._.pack_8a _img
mov ebx, [_img]
mov esi, [ebx + Image.Data]
mov edi, esi
mov ecx, [ebx + Image.Width]
imul ecx, [ebx + Image.Height]
@@:
lodsw
stosb
dec ecx
jnz @b
ret
endp
proc xcf._.apply_opacity _img, _color_step
push ebx
mov edx, [ebx + Image.Extended]
mov edx, [edx + xcf_ext.opacity]
cmp dl, 0xff
je .quit
mov ecx, [ebx + Image.Width]
imul ecx, [ebx + Image.Height]
mov esi, [ebx + Image.Data]
mov ebx, [_color_step]
add esi, ebx
mov edi, esi
@@:
lodsb
mul dl
shr ax, 8
stosb
add esi, ebx
add edi, ebx
dec ecx
jnz @b
.quit:
pop ebx
ret
endp
proc xcf._.apply_alpha_mask _img, _mask, _color_step
push ebx
mov ebx, [_img]
mov esi, [_mask]
mov esi, [esi + Image.Data]
mov edi, [ebx + Image.Data]
mov ecx, [ebx + Image.Width]
imul ecx, [ebx + Image.Height]
mov ebx, [_color_step]
add edi, ebx
@@:
lodsb
mul byte[edi]
shr ax, 8
stosb
add edi, ebx
dec ecx
jnz @b
stdcall img.destroy, [_mask]
pop ebx
ret
endp
;;================================================================================================;;
proc xcf._.rgb2hsv ;///////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? convert color from RGB to HSV space ;;
;;------------------------------------------------------------------------------------------------;;
;> eax = color (0xAARRGGBB) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = color (0xAAHHSSVV) ;;
;;================================================================================================;;
locals
vsha rd 1
max rd 1
min rd 1
med rd 1
endl
push ebx ecx edx
mov [vsha], eax
movzx eax, byte[vsha] ; eax = al = blue
movzx ecx, byte[vsha+1] ; ecx = cl = green
movzx edx, byte[vsha+2] ; edx = dl = red
cmp al, cl
jne @f
cmp al, dl
jne @f
ror eax, 8
mov ax, 0
rol eax, 8
jmp .quit
@@:
cmp dl, cl
ja @f
cmp dl, al
ja @f
mov byte[min], dl
jmp .min_found
@@:
cmp cl, al
ja @f
cmp cl, dl
ja @f
mov byte[min], cl
jmp .min_found
@@:
mov byte[min], al
; jmp .min_found
.min_found:
cmp dl, cl
jb @f
cmp dl, al
jb @f
mov byte[max], dl
sub cx, ax
mov dx, cx
mov cx, 0
jmp .max_found
@@:
cmp cl, al
jb @f
cmp cl, dl
jb @f
mov byte[max], cl
sub ax, dx
mov dx, ax
mov cx, 85
jmp .max_found
@@:
mov byte[max], al
sub dx, cx
mov cx, 171
; jmp .max_found
.max_found:
mov al, byte[max]
sub al, byte[min]
mov byte[med], al
imul dx, 43
movsx eax, dx
ror eax, 16
mov dx, ax
rol eax, 16
mov byte[med + 1], 0
idiv word[med]
add al, cl
mov byte[vsha + 2], al
mov al, byte[max]
mov byte[vsha], al
mov byte[vsha + 1], 0
test al, al
jz @f
mov byte[vsha + 1], 0xff
cmp al, byte[med]
je @f
mov al, byte[med]
shl ax, 8
div byte[max]
mov byte[vsha + 1], al
@@:
mov eax, [vsha]
.quit:
pop edx ecx ebx
ret
endp
;;================================================================================================;;
proc xcf._.hsv2rgb ;///////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? convert color from HSV to RGB space ;;
;;------------------------------------------------------------------------------------------------;;
;> eax = color (0xAAHHSSVV) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = color (0xAARRGGBB) ;;
;;================================================================================================;;
locals
vsha rd 1
f rb 1
c rb 1
x rb 1
endl
push ebx ecx edx
mov [vsha], eax
mov bl, byte[vsha + 1]
mul bl
mov byte[c], ah
movzx eax, byte[vsha + 2]
cmp eax, 43
ja @f
lea eax, [eax*3]
shl eax, 1
mov ebx, eax
shr ebx, 7
sub eax, ebx
shr ebx, 1
sub eax, ebx
jmp .ok
@@:
cmp eax, 86
ja @f
sub eax, 44
lea eax, [eax*3]
shl eax, 1
neg al
add al, 0xff
jmp .ok
@@:
cmp eax, 129
ja @f
sub eax, 87
lea eax, [eax*3]
shl eax, 1
jmp .ok
@@:
cmp eax, 171
ja @f
sub eax, 130
lea eax, [eax*3]
shl eax, 1
neg al
add al, 0xff
jmp .ok
@@:
cmp eax, 214
ja @f
sub eax, 172
lea eax, [eax*3]
shl eax, 1
jmp .ok
@@:
sub eax, 215
lea eax, [eax*3]
shl eax, 1
neg al
add al, 0xff
; jmp .ok
.ok:
neg al
add al, 0xff
neg al
add al, 0xff
; shr ax, 8
mul byte[c]
mov byte[x], ah
mov al, byte[vsha+2]
cmp al, 43
jae @f
mov eax, [vsha]
shr eax, 8
mov ah, byte[c]
shl eax, 8
mov ah, byte[x]
mov al, 0
jmp .done
@@:
cmp al, 86
jae @f
mov eax, [vsha]
shr eax, 8
mov ah, byte[x]
shl eax, 8
mov ah, byte[c]
mov al, 0
jmp .done
@@:
cmp al, 129
jae @f
mov eax, [vsha]
shr eax, 8
mov ah, 0
shl eax, 8
mov ah, byte[c]
mov al, byte[x]
jmp .done
@@:
cmp al, 171
jae @f
mov eax, [vsha]
shr eax, 8
mov ah, 0
shl eax, 8
mov ah, byte[x]
mov al, byte[c]
jmp .done
@@:
cmp al, 214
jae @f
mov eax, [vsha]
shr eax, 8
mov ah, byte[x]
shl eax, 8
mov ah, 0
mov al, byte[c]
jmp .done
@@:
mov eax, [vsha]
shr eax, 8
mov ah, byte[c]
shl eax, 8
mov ah, 0
mov al, byte[x]
; jmp .done
.done:
mov bl, byte[vsha]
sub bl, byte[c]
ror eax, 8
add ah, bl
rol eax, 8
add ah, bl
add al, bl
.quit:
pop edx ecx ebx
ret
endp
;;================================================================================================;;
proc xcf._.rgb2hsl ;///////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? convert color from RGB to HSL space ;;
;;------------------------------------------------------------------------------------------------;;
;> eax = color (0xAARRGGBB) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = color (0xAAHHSSLL) ;;
;;================================================================================================;;
; http://www.asmcommunity.net/board/index.php?topic=7425
; iblis: "I don't know what X-Filez is, but yes you may use it however you wish. That's why I made this post, to share."
; so pixel_rgb2hsl procedure is based on code by Greg Hoyer (iblis). thanks!
;--------------------------------------------------------------;
; By Greg Hoyer aka "Iblis" ;
; ;
; RGB2HSL converts a COLORREF oriented dword filled with 8bit ;
; Red/Green/Blue values (00ggbbrr) to a similarly oriented ;
; dword filled with Hue/Saturation/Luminance values (00llsshh) ;
; This procedure returns the full range, from 0-255. This ;
; offers slightly more precision over Windows' "color picker" ;
; common dialog, which displays HSL values ranging from 0-240. ;
; ;
; It is important to note that true HSL values are normally ;
; represented as floating point fractions from 0.0 to 1.0. ;
; As such, this algorithm cannot be used to do the precise, ;
; consistent conversions that may be required by heavy-duty ;
; graphics applications. To get the decimal fraction for ;
; the returned values, convert the Hue, Saturation, and/or ;
; Luminance values to floating point, and then divide by 255. ;
;--------------------------------------------------------------;
locals
bgra rd 1
endl
push ebx esi edi
mov [bgra], eax
movzx esi, byte[bgra + 0]
movzx edi, byte[bgra + 1]
movzx ebx, byte[bgra + 2]
mov cl, -1
cmp esi, edi
ja .cmp1
xchg esi, edi
neg cl
shl cl, 1
.cmp1:
cmp edi, ebx
jb .cmp2
xchg edi, ebx
neg cl
.cmp2:
cmp esi, ebx
ja .cmp3
xchg esi, ebx
not cl
.cmp3:
neg ebx
add ebx, esi
mov eax, edi
add edi, esi
jz .done
sub esi, eax
jz .done
mov eax, esi
shl eax, 8
sub eax, esi
push edi
cmp edi, 0xff
jbe .csat
neg edi
add edi, 510
.csat:
xor edx, edx
div edi
pop edi
shr edi, 1
shl eax, 8
or edi, eax
add cl, 3
jnc .noneg
neg ebx
.noneg:
shl cl, 2
mov eax, 0x13135db9
shr eax, cl
and eax, 7
mul esi
add eax, ebx
mov ebx, eax
shl eax, 8
sub eax, ebx
mov ebx, esi
shl esi, 1
lea ebx, [ebx*4 + esi]
xor edx, edx
div ebx
shl eax, 16
or eax, edi
.done:
bswap eax
shr eax, 8
mov bl, byte[bgra + 3]
bswap eax
mov al, bl
ror eax, 8
pop edi esi ebx
ret
endp
;;================================================================================================;;
proc xcf._.hsl2rgb ;///////////////////////////////////////////////////////////////////////////;;
;;------------------------------------------------------------------------------------------------;;
;? convert color from HSL to RGB space ;;
;;------------------------------------------------------------------------------------------------;;
;> eax = color (0xAAHHSSLL) ;;
;;------------------------------------------------------------------------------------------------;;
;< eax = color (0xAARRGGBB) ;;
;;================================================================================================;;
; http://www.asmcommunity.net/board/index.php?topic=7425
; iblis: "I don't know what X-Filez is, but yes you may use it however you wish. That's why I made this post, to share."
; so pixel_hsl2rgb procedure is based on code by Greg Hoyer (iblis). thanks!
;--------------------------------------------------------------;
; By Greg Hoyer aka "Iblis" ;
; ;
; HSL2RGB does the opposite of RGB2HSL. It converts a ;
; Hue/Saturation/Luminance (00llsshh) dword back into its ;
; corresponding RGB COLORREF (00bbggrr). This function is ;
; intented to be used exclusively with RGB2HSL (see above) ;
; ;
; If you're using this for your own custom color-chooser ;
; dialog, remember that the values are in the range of 0-255. ;
; If you MUST emulate the Windows' color-chooser, convert HSL ;
; values this way before you display them: ;
; ;
; display_value = ( x * 240 ) / 255 ;
; ;
; ...where x represents any one of the HSL values. ;
;--------------------------------------------------------------;
locals
lsha rd 1
endl
push ebx esi edi
mov [lsha], eax
movzx ebx, byte[lsha + 0]
lea esi, [ebx*2]
movzx edi, byte[lsha + 1]
xor eax, eax
mov cl, 1
cmp bl, 0x7f
ja .lcase
dec al
xor ecx, ecx
.lcase:
add eax, edi
mul ebx
or ecx, ecx
jz .scase
neg eax
mov ecx, ebx
add ecx, edi
mov edx, ecx
shl ecx, 8
sub ecx, edx
add eax, ecx
.scase:
xor edx, edx
xor ecx, ecx
dec cl
mov edi, ecx
div ecx
jz .done
mov ecx, eax
sub esi, eax
movzx eax, byte[lsha + 2]
mov ebx, eax
shl eax, 1
lea eax, [ebx*4 + eax]
xor edx, edx
div edi
mov ebx, eax
mov eax, ecx
sub eax, esi
mul edx
push ebx
mov ebx, ecx
shl ebx, 8
sub ebx, ecx
sub ebx, eax
xchg eax, ebx
xor edx, edx
div edi
shl eax, 24
or ecx, eax
mov eax, esi
shl eax, 8
sub eax, esi
shl esi, 16
or ecx, esi
add eax, ebx
xor edx, edx
div edi
mov ch, al
mov eax, ecx
pop ecx
cmp cl, 6
jz .done
or ecx, ecx
jz .done
bswap eax
rol eax, 8
xchg ah, al
dec ecx
jz .done
ror eax, 8
xchg ah, al
dec ecx
jz .done
rol eax, 8
xchg ah, al
dec ecx
jz .done
bswap eax
rol eax, 8
xchg ah, al
dec ecx
jz .done
ror eax, 8
xchg ah, al
.done:
and eax, 0x00ffffff
mov bl, byte[lsha + 3]
bswap eax
mov al, bl
ror eax, 8
pop edi esi ebx
ret
endp
match =MMX, COMPOSITE_MODE{include 'composite_mmx.asm'}
match =SSE, COMPOSITE_MODE{include 'composite_sse.asm'}
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
;! Below is private data you should never use directly from your code ;;
;;================================================================================================;;
;;////////////////////////////////////////////////////////////////////////////////////////////////;;
;;================================================================================================;;
xcf._.prop_table_begin:
dd 00, xcf._.parse_properties.00
dd 01, xcf._.parse_properties.01
dd 06, xcf._.parse_properties.06
dd 07, xcf._.parse_properties.07
dd 08, xcf._.parse_properties.08
dd 11, xcf._.parse_properties.11
dd 15, xcf._.parse_properties.15
xcf._.prop_table_end:
xcf._.composite_table.begin:
.p00 dd 00, xcf._.composite_rgb_00, xcf._.composite_gray_00, xcf._.composite_indexed_00 ; Normal
.p01 dd 01, xcf._.composite_rgb_01, xcf._.composite_gray_01, xcf._.composite_gray_01 ; Dissolve : random dithering to discrete alpha
; .p02 dd 02, xcf._.composite_rgb_02, 0, xcf._.composite_indexed_02 ; Behind : not selectable in the GIMP UI. not implemented
.p03 dd 03, xcf._.composite_rgb_03, xcf._.composite_rgb_03, xcf._.composite_indexed_00 ; Multiply
.p04 dd 04, xcf._.composite_rgb_04, xcf._.composite_rgb_04, xcf._.composite_indexed_00 ; Screen
.p05 dd 05, xcf._.composite_rgb_05, xcf._.composite_rgb_05, xcf._.composite_indexed_00 ; Overlay
.p06 dd 06, xcf._.composite_rgb_06, xcf._.composite_rgb_06, xcf._.composite_indexed_00 ; Difference
.p07 dd 07, xcf._.composite_rgb_07, xcf._.composite_rgb_07, xcf._.composite_indexed_00 ; Addition
.p08 dd 08, xcf._.composite_rgb_08, xcf._.composite_rgb_08, xcf._.composite_indexed_00 ; Subtract
.p09 dd 09, xcf._.composite_rgb_09, xcf._.composite_rgb_09, xcf._.composite_indexed_00 ; Darken Only
.p10 dd 10, xcf._.composite_rgb_10, xcf._.composite_rgb_10, xcf._.composite_indexed_00 ; Lighten Only
.p11 dd 11, xcf._.composite_rgb_11, xcf._.composite_gray_00, xcf._.composite_indexed_00 ; Hue (H of HSV)
.p12 dd 12, xcf._.composite_rgb_12, xcf._.composite_gray_00, xcf._.composite_indexed_00 ; Saturation (S of HSV)
.p13 dd 13, xcf._.composite_rgb_13, xcf._.composite_gray_00, xcf._.composite_indexed_00 ; Color (H and S of HSL)
.p14 dd 14, xcf._.composite_rgb_14, xcf._.composite_gray_00, xcf._.composite_indexed_00 ; Value (V of HSV)
.p15 dd 15, xcf._.composite_rgb_15, xcf._.composite_rgb_15, xcf._.composite_indexed_00 ; Divide
.p16 dd 16, xcf._.composite_rgb_16, xcf._.composite_rgb_16, xcf._.composite_indexed_00 ; Dodge
.p17 dd 17, xcf._.composite_rgb_17, xcf._.composite_rgb_17, xcf._.composite_indexed_00 ; Burn
.p18 dd 18, xcf._.composite_rgb_18, xcf._.composite_rgb_18, xcf._.composite_indexed_00 ; Hard Light
.p19 dd 19, xcf._.composite_rgb_05, xcf._.composite_rgb_05, xcf._.composite_indexed_00 ; Soft Light : XCF >= 2 only ('soft light' == 'overlay')
.p20 dd 20, xcf._.composite_rgb_20, xcf._.composite_rgb_20, xcf._.composite_indexed_00 ; Grain Extract : XCF >= 2 only
.p21 dd 21, xcf._.composite_rgb_21, xcf._.composite_rgb_21, xcf._.composite_indexed_00 ; Grain Merge : XCF >= 2 only
xcf._.composite_table.end:
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