ERROR: unsupported-bitmap-file magic ;
-: load-bitmap ( path -- loading-bitmap )
- binary stream-throws <limited-file-reader> [
+: load-bitmap ( stream -- loading-bitmap )
+ [
\ loading-bitmap new
parse-file-header [ >>file-header ] [ ] bi magic>> {
{ "BM" [
: loading-bitmap>bytes ( loading-bitmap -- byte-array )
uncompress-bitmap bitmap>bytes ;
-M: bitmap-image load-image* ( path bitmap-image -- bitmap )
+M: bitmap-image stream>image ( stream bitmap-image -- bitmap )
drop load-bitmap
[ image new ] dip
{
--- /dev/null
+Doug Coleman
\ No newline at end of file
--- /dev/null
+! Copyright (C) 2009 Doug Coleman.
+! See http://factorcode.org/license.txt for BSD license.
+USING: http.client images.loader images.loader.private kernel ;
+IN: images.http
+
+: load-http-image ( path -- image )
+ [ http-get nip ] [ image-class new ] bi load-image* ;
: has-alpha? ( image -- ? ) component-order>> alpha-channel? ;
-GENERIC: load-image* ( path class -- image )
-
: bytes-per-component ( component-type -- n )
{
{ ubyte-components [ 1 ] }
io.streams.byte-array kernel locals math math.bitwise
math.constants math.functions math.matrices math.order
math.ranges math.vectors memoize multiline namespaces
-sequences sequences.deep ;
+sequences sequences.deep images.loader ;
IN: images.jpeg
QUALIFIED-WITH: bitstreams bs
{ huff-tables initial: { f f f f } }
{ components } ;
+"jpg" jpeg-image register-image-class
+"jpeg" jpeg-image register-image-class
+
<PRIVATE
: <jpeg-image> ( headers bitstream -- image )
PRIVATE>
-: load-jpeg ( path -- image )
- binary [
+M: jpeg-image stream>image ( stream jpeg-image -- bitmap )
+ drop [
parse-marker { SOI } = [ not-a-jpeg-image ] unless
parse-headers
contents <jpeg-image>
- ] with-file-reader
+ ] with-input-stream
dup jpeg-image [
baseline-parse
baseline-decompress
] with-variable ;
-
-M: jpeg-image load-image* ( path jpeg-image -- bitmap )
- drop load-jpeg ;
-
! Copyright (C) 2009 Doug Coleman, Daniel Ehrenberg.
! See http://factorcode.org/license.txt for BSD license.
-USING: kernel splitting unicode.case combinators accessors images
-io.pathnames namespaces assocs ;
+USING: accessors assocs byte-arrays combinators images
+io.encodings.binary io.pathnames io.streams.byte-array
+io.streams.limited kernel namespaces splitting strings
+unicode.case ;
IN: images.loader
ERROR: unknown-image-extension extension ;
file-extension >lower types get ?at
[ unknown-image-extension ] unless ;
+: open-image-file ( path -- stream )
+ binary stream-throws <limited-file-reader> ;
+
PRIVATE>
+GENERIC# load-image* 1 ( obj class -- image )
+
+GENERIC: stream>image ( stream class -- image )
+
: register-image-class ( extension class -- )
swap types get set-at ;
: load-image ( path -- image )
- dup image-class load-image* ;
+ [ open-image-file ] [ image-class new ] bi load-image* ;
+
+M: byte-array load-image*
+ [ binary <byte-reader> ] dip stream>image ;
+
+M: limited-stream load-image* stream>image ;
+
+M: string load-image* [ open-image-file ] dip stream>image ;
+
+M: pathname load-image* [ open-image-file ] dip stream>image ;
[ unknown-color-type ]
} case ;
-: load-png ( path -- image )
- binary stream-throws <limited-file-reader> [
+M: png-image stream>image
+ drop [
<loading-png>
read-png-header
read-png-chunks
parse-ihdr-chunk
decode-png
] with-input-stream ;
-
-M: png-image load-image*
- drop load-png ;
dup strips>> concat >>bitmap ;
: (strips-predictor) ( ifd -- ifd )
+B
[ ]
[ image-width find-tag ]
[ samples-per-pixel find-tag ] tri
: with-tiff-endianness ( loading-tiff quot -- )
[ dup endianness>> ] dip with-endianness ; inline
-: load-tiff-ifds ( path -- loading-tiff )
- binary [
+: load-tiff-ifds ( stream -- loading-tiff )
+ [
<loading-tiff>
read-header [
dup ifd-offset>> read-ifds
process-ifds
] with-tiff-endianness
- ] with-file-reader ;
+ ] with-input-stream* ;
: process-chunky-ifd ( ifd -- )
read-strips
ifds>> [ process-ifd ] each ;
: load-tiff ( path -- loading-tiff )
- [ load-tiff-ifds dup ] keep
- binary [
- [ process-tif-ifds ] with-tiff-endianness
- ] with-file-reader ;
+ [ load-tiff-ifds dup ]
+ [
+ [ [ 0 seek-absolute ] dip stream-seek ]
+ [
+ [
+ [ process-tif-ifds ] with-tiff-endianness
+ ] with-input-stream
+ ] bi
+ ] bi ;
! tiff files can store several images -- we just take the first for now
-M: tiff-image load-image* ( path tiff-image -- image )
+M: tiff-image stream>image ( stream tiff-image -- image )
drop load-tiff tiff>image ;
{ "tif" "tiff" } [ tiff-image register-image-class ] each