move more bitmap code to bitmap.loading
Doug Coleman
parent
3cabf3aeca
commit
41a2894083
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@ -2,8 +2,7 @@
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors alien alien.c-types arrays byte-arrays columns
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combinators compression.run-length endian fry grouping images
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images.bitmap.loading images.bitmap.saving images.loader io
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io.binary io.encodings.8-bit io.encodings.binary
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images.bitmap.loading images.loader io
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io.encodings.string io.files io.streams.limited kernel locals
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macros math math.bitwise math.functions namespaces sequences
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specialized-arrays.uint specialized-arrays.ushort strings
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@ -11,153 +10,8 @@ summary ;
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QUALIFIED-WITH: bitstreams b
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IN: images.bitmap
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SINGLETON: bitmap-image
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"bmp" bitmap-image register-image-class
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! endpoints-triple is ciexyzX/Y/Z, 3x fixed-point-2.30 aka 3x uint
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<PRIVATE
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: color-lookup3 ( loading-bitmap -- seq )
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[ color-index>> >array ]
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[ color-palette>> 3 <sliced-groups> ] bi
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'[ _ nth ] map concat ;
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: color-lookup4 ( loading-bitmap -- seq )
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[ color-index>> >array ]
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[ color-palette>> 4 <sliced-groups> [ 3 head-slice ] map ] bi
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'[ _ nth ] map concat ;
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! os2v1 is 3bytes each, all others are 3 + 1 unused
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: color-lookup ( loading-bitmap -- seq )
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dup file-header>> header-length>> {
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{ 12 [ color-lookup3 ] }
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{ 64 [ color-lookup4 ] }
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{ 40 [ color-lookup4 ] }
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{ 108 [ color-lookup4 ] }
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{ 124 [ color-lookup4 ] }
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} case ;
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ERROR: bmp-not-supported n ;
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: uncompress-bitfield ( seq masks -- bytes' )
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'[
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_ [
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[ bitand ] [ bit-count ] [ log2 ] tri - shift
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] with map
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] { } map-as B{ } concat-as ;
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: bitmap>bytes ( loading-bitmap -- byte-array )
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dup header>> bit-count>>
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{
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{ 32 [ color-index>> ] }
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{ 24 [ color-index>> ] }
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{ 16 [
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[
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! byte-array>ushort-array
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2 group [ le> ] map
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! 5 6 5
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! { HEX: f800 HEX: 7e0 HEX: 1f } uncompress-bitfield
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! 5 5 5
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{ HEX: 7c00 HEX: 3e0 HEX: 1f } uncompress-bitfield
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] change-color-index
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color-index>>
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] }
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{ 8 [ color-lookup ] }
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{ 4 [ [ 4 b:byte-array-n>seq ] change-color-index color-lookup ] }
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{ 1 [ [ 1 b:byte-array-n>seq ] change-color-index color-lookup ] }
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[ bmp-not-supported ]
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} case >byte-array ;
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: set-bitfield-widths ( loading-bitmap -- loading-bitmap' )
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dup header>> bit-count>> {
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{ 16 [ dup color-palette>> 4 group [ le> ] map ] }
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{ 32 [ { HEX: ff0000 HEX: ff00 HEX: ff } ] }
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} case reverse >>bitfields ;
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ERROR: unsupported-bitfield-widths n ;
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M: unsupported-bitfield-widths summary
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drop "Bitmaps only support bitfield compression in 16/32bit images" ;
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: uncompress-bitfield-widths ( loading-bitmap -- loading-bitmap' )
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set-bitfield-widths
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dup header>> bit-count>> {
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{ 16 [
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dup bitfields>> '[
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byte-array>ushort-array _ uncompress-bitfield
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] change-color-index
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] }
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{ 32 [ ] }
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[ unsupported-bitfield-widths ]
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} case ;
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ERROR: unsupported-bitmap-compression compression ;
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GENERIC: uncompress-bitmap* ( loading-bitmap header -- loading-bitmap )
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: uncompress-bitmap ( loading-bitmap -- loading-bitmap )
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dup header>> uncompress-bitmap* ;
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M: os2-header uncompress-bitmap* ( loading-bitmap header -- loading-bitmap' )
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drop ;
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: do-run-length-uncompress ( loading-bitmap word -- loading-bitmap )
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dupd '[
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_ header>> [ width>> ] [ height>> ] bi
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_ execute
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] change-color-index ; inline
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M: v-header uncompress-bitmap* ( loading-bitmap header -- loading-bitmap' )
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compression>> {
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{ f [ ] }
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{ 0 [ ] }
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{ 1 [ \ run-length-uncompress-bitmap8 do-run-length-uncompress ] }
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{ 2 [ \ run-length-uncompress-bitmap4 do-run-length-uncompress ] }
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{ 3 [ uncompress-bitfield-widths ] }
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{ 4 [ "jpeg" unsupported-bitmap-compression ] }
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{ 5 [ "png" unsupported-bitmap-compression ] }
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} case ;
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: bitmap-padding ( width -- n )
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3 * 4 mod 4 swap - 4 mod ; inline
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: loading-bitmap>bytes ( loading-bitmap -- byte-array )
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uncompress-bitmap bitmap>bytes ;
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: color-palette-length ( loading-bitmap -- n )
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file-header>>
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[ offset>> 14 - ] [ header-length>> ] bi - ;
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: color-index-length ( header -- n )
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{
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[ width>> ]
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[ planes>> * ]
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[ bit-count>> * 31 + 32 /i 4 * ]
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[ height>> abs * ]
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} cleave ;
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ERROR: unsupported-bitmap-file magic ;
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PRIVATE>
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: bitmap>color-index ( bitmap -- byte-array )
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[
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bitmap>>
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4 <sliced-groups>
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[ 3 head-slice <reversed> ] map
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B{ } join
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] [
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dim>> first dup bitmap-padding dup 0 > [
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[ 3 * group ] dip '[ _ <byte-array> append ] map
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B{ } join
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] [
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2drop
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] if
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] bi ;
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: reverse-lines ( byte-array width -- byte-array )
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<sliced-groups> <reversed> concat ; inline
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: write2 ( n -- ) 2 >le write ;
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: write4 ( n -- ) 4 >le write ;
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: save-bitmap ( image path -- )
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binary [
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@ -1,12 +1,16 @@
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! Copyright (C) 2009 Doug Coleman.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors arrays combinators images images.bitmap
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images.bitmap.private io io.binary io.encodings.8-bit
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io.encodings.binary io.encodings.string io.streams.limited
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kernel math math.bitwise grouping sequences ;
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QUALIFIED-WITH: syntax S
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USING: accessors arrays byte-arrays combinators
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compression.run-length fry grouping images images.loader io
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io.binary io.encodings.8-bit io.encodings.binary
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io.encodings.string io.streams.limited kernel math math.bitwise
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sequences specialized-arrays.ushort summary ;
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QUALIFIED-WITH: bitstreams b
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IN: images.bitmap.loading
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SINGLETON: bitmap-image
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"bmp" bitmap-image register-image-class
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! http://www.fileformat.info/format/bmp/egff.htm
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! http://www.digicamsoft.com/bmp/bmp.html
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@ -176,6 +180,18 @@ UNION: os2-header os2v1-header os2v2-header ;
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[ unknown-bitmap-header ]
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} case ;
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: color-index-length ( header -- n )
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{
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[ width>> ]
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[ planes>> * ]
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[ bit-count>> * 31 + 32 /i 4 * ]
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[ height>> abs * ]
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} cleave ;
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: color-palette-length ( loading-bitmap -- n )
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file-header>>
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[ offset>> 14 - ] [ header-length>> ] bi - ;
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: parse-color-palette ( loading-bitmap -- loading-bitmap )
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dup color-palette-length read >>color-palette ;
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@ -217,12 +233,113 @@ GENERIC: bitmap>component-order* ( loading-bitmap header -- object )
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[ drop simple-bitmap>component-order ]
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} case ;
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: color-lookup3 ( loading-bitmap -- seq )
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[ color-index>> >array ]
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[ color-palette>> 3 <sliced-groups> ] bi
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'[ _ nth ] map concat ;
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: color-lookup4 ( loading-bitmap -- seq )
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[ color-index>> >array ]
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[ color-palette>> 4 <sliced-groups> [ 3 head-slice ] map ] bi
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'[ _ nth ] map concat ;
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! os2v1 is 3bytes each, all others are 3 + 1 unused
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: color-lookup ( loading-bitmap -- seq )
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dup file-header>> header-length>> {
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{ 12 [ color-lookup3 ] }
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{ 64 [ color-lookup4 ] }
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{ 40 [ color-lookup4 ] }
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{ 108 [ color-lookup4 ] }
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{ 124 [ color-lookup4 ] }
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} case ;
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M: os2v1-header bitmap>component-order* drop simple-bitmap>component-order ;
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M: os2v2-header bitmap>component-order* drop simple-bitmap>component-order ;
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M: v3-header bitmap>component-order* drop simple-bitmap>component-order ;
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M: v4-header bitmap>component-order* drop advanced-bitmap>component-order ;
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M: v5-header bitmap>component-order* drop advanced-bitmap>component-order ;
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: uncompress-bitfield ( seq masks -- bytes' )
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'[
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_ [
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[ bitand ] [ bit-count ] [ log2 ] tri - shift
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] with map
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] { } map-as B{ } concat-as ;
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ERROR: bmp-not-supported n ;
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: bitmap>bytes ( loading-bitmap -- byte-array )
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dup header>> bit-count>>
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{
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{ 32 [ color-index>> ] }
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{ 24 [ color-index>> ] }
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{ 16 [
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[
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! byte-array>ushort-array
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2 group [ le> ] map
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! 5 6 5
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! { HEX: f800 HEX: 7e0 HEX: 1f } uncompress-bitfield
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! 5 5 5
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{ HEX: 7c00 HEX: 3e0 HEX: 1f } uncompress-bitfield
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] change-color-index
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color-index>>
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] }
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{ 8 [ color-lookup ] }
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{ 4 [ [ 4 b:byte-array-n>seq ] change-color-index color-lookup ] }
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{ 1 [ [ 1 b:byte-array-n>seq ] change-color-index color-lookup ] }
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[ bmp-not-supported ]
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} case >byte-array ;
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: set-bitfield-widths ( loading-bitmap -- loading-bitmap' )
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dup header>> bit-count>> {
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{ 16 [ dup color-palette>> 4 group [ le> ] map ] }
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{ 32 [ { HEX: ff0000 HEX: ff00 HEX: ff } ] }
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} case reverse >>bitfields ;
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ERROR: unsupported-bitfield-widths n ;
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M: unsupported-bitfield-widths summary
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drop "Bitmaps only support bitfield compression in 16/32bit images" ;
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: uncompress-bitfield-widths ( loading-bitmap -- loading-bitmap' )
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set-bitfield-widths
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dup header>> bit-count>> {
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{ 16 [
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dup bitfields>> '[
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byte-array>ushort-array _ uncompress-bitfield
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] change-color-index
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] }
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{ 32 [ ] }
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[ unsupported-bitfield-widths ]
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} case ;
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ERROR: unsupported-bitmap-compression compression ;
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GENERIC: uncompress-bitmap* ( loading-bitmap header -- loading-bitmap )
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: uncompress-bitmap ( loading-bitmap -- loading-bitmap )
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dup header>> uncompress-bitmap* ;
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M: os2-header uncompress-bitmap* ( loading-bitmap header -- loading-bitmap' )
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drop ;
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: do-run-length-uncompress ( loading-bitmap word -- loading-bitmap )
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dupd '[
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_ header>> [ width>> ] [ height>> ] bi
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_ execute
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] change-color-index ; inline
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M: v-header uncompress-bitmap* ( loading-bitmap header -- loading-bitmap' )
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compression>> {
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{ f [ ] }
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{ 0 [ ] }
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{ 1 [ \ run-length-uncompress-bitmap8 do-run-length-uncompress ] }
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{ 2 [ \ run-length-uncompress-bitmap4 do-run-length-uncompress ] }
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{ 3 [ uncompress-bitfield-widths ] }
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{ 4 [ "jpeg" unsupported-bitmap-compression ] }
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{ 5 [ "png" unsupported-bitmap-compression ] }
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} case ;
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ERROR: unsupported-bitmap-file magic ;
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: load-bitmap ( path -- loading-bitmap )
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@ -243,6 +360,9 @@ ERROR: unsupported-bitmap-file magic ;
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} case
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] with-input-stream ;
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: loading-bitmap>bytes ( loading-bitmap -- byte-array )
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uncompress-bitmap bitmap>bytes ;
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M: bitmap-image load-image* ( path bitmap-image -- bitmap )
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drop load-bitmap
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[ image new ] dip
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