1 ! Copyright (C) 2009 Doug Coleman
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: kernel accessors grouping sequences combinators
4 math specialized-arrays.direct.uint byte-arrays fry
5 specialized-arrays.direct.ushort specialized-arrays.uint
6 specialized-arrays.ushort specialized-arrays.float images ;
7 IN: images.normalization
11 : add-dummy-alpha ( seq -- seq' )
12 3 <groups> [ 255 suffix ] map concat ;
14 : normalize-floats ( byte-array -- byte-array )
15 byte-array>float-array [ 255.0 * >integer ] B{ } map-as ;
17 GENERIC: normalize-component-order* ( image component-order -- image )
19 : normalize-component-order ( image -- image )
20 dup component-order>> '[ _ normalize-component-order* ] change-bitmap ;
22 M: RGBA normalize-component-order* drop ;
24 M: R32G32B32A32 normalize-component-order*
25 drop normalize-floats ;
27 M: R32G32B32 normalize-component-order*
28 drop normalize-floats add-dummy-alpha ;
30 : RGB16>8 ( bitmap -- bitmap' )
31 byte-array>ushort-array [ -8 shift ] B{ } map-as ; inline
33 M: R16G16B16A16 normalize-component-order*
36 M: R16G16B16 normalize-component-order*
37 drop RGB16>8 add-dummy-alpha ;
39 : BGR>RGB ( bitmap -- pixels )
40 3 <sliced-groups> [ <reversed> ] map B{ } join ; inline
42 : BGRA>RGBA ( bitmap -- pixels )
44 [ unclip-last-slice [ <reversed> ] dip suffix ] map concat ; inline
46 M: BGRA normalize-component-order*
49 M: RGB normalize-component-order*
50 drop add-dummy-alpha ;
52 M: BGR normalize-component-order*
53 drop BGR>RGB add-dummy-alpha ;
55 : ARGB>RGBA ( bitmap -- bitmap' )
56 4 <groups> [ unclip suffix ] map B{ } join ; inline
58 M: ARGB normalize-component-order*
61 M: ABGR normalize-component-order*
62 drop ARGB>RGBA BGRA>RGBA ;
64 : normalize-scan-line-order ( image -- image )
66 dup dim>> first 4 * '[
67 _ <groups> reverse concat
74 : normalize-image ( image -- image )
75 [ >byte-array ] change-bitmap
76 normalize-component-order
77 normalize-scan-line-order
78 RGBA >>component-order ;