author | tz |
Wed, 01 Apr 1998 17:21:53 +0200 | |
changeset 889 | 85b7aa0e79e4 |
parent 815 | 5fe6cac83186 |
child 918 | 64336276b146 |
permissions | -rw-r--r-- |
37 | 1 |
" |
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COPYRIGHT (c) 1994 by Claus Gittinger |
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All Rights Reserved |
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||
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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||
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ImageReader subclass:#TargaReader |
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instanceVariableNames:'orientation' |
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classVariableNames:'' |
16 |
poolDictionaries:'' |
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category:'Graphics-Images-Support' |
37 | 18 |
! |
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!TargaReader class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1994 by Claus Gittinger |
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All Rights Reserved |
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26 |
||
27 |
This software is furnished under a license and may be used |
|
28 |
only in accordance with the terms of that license and with the |
|
29 |
inclusion of the above copyright notice. This software may not |
|
30 |
be provided or otherwise made available to, or used by, any |
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31 |
other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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! |
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||
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documentation |
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" |
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this class provides methods for loading targa-file (tga) images. |
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37 | 40 |
Limitations: |
556 | 41 |
not fully tested (I only had a few targa files to check things) |
42 |
only supports 8,24 and 32 bits/pixel formats; alpha channel is ignored |
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210 | 43 |
Image saving not supported |
37 | 44 |
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I had two tga files to test this code with - it may not work with |
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556 | 46 |
other targa files (it certainly does not work with 1/16 bit images). |
299 | 47 |
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37 | 48 |
Suggestions: adapt & use the pbmplus library here. |
210 | 49 |
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[See also:] |
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234 | 51 |
Image Form Icon |
210 | 52 |
BlitImageReader FaceReader GIFReader JPEGReader PBMReader PCXReader |
53 |
ST80FormReader SunRasterReader TIFFReader WindowsIconReader |
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XBMReader XPMReader XWDReader |
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37 | 55 |
" |
56 |
! ! |
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!TargaReader class methodsFor:'initialization'! |
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initialize |
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"tell Image-class, that a new fileReader is present |
398 | 62 |
for the '.tga' extension." |
210 | 63 |
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MIMETypes defineImageType:'image/x-targa' suffix:'tga' reader:self. |
37 | 65 |
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"Modified: 27.6.1997 / 18:39:43 / cg" |
37 | 67 |
! ! |
68 |
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!TargaReader class methodsFor:'testing'! |
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isValidImageFile:aFileName |
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"return true, if aFileName contains a targa-file image" |
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|aStream w h depth flags| |
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43 | 76 |
aStream := self streamReadingFile:aFileName. |
77 |
aStream isNil ifTrue:[^ false]. |
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aStream binary. |
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aStream skip:12. "/ skip 12 bytes |
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w := aStream nextShortMSB:false. |
82 |
h := aStream nextShortMSB:false. |
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depth := aStream next. |
85 |
flags := aStream next. |
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(#(8 "16" 24 32) includes:depth) ifFalse:[ |
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aStream close. ^ false |
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]. |
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aStream close. |
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^ true |
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" |
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TargaReader isValidImageFile:'bitmaps/test.tga' |
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TargaReader isValidImageFile:'bitmaps/garfield.gif' |
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" |
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"Modified: 21.4.1997 / 20:46:52 / cg" |
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! ! |
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!TargaReader methodsFor:'reading from file'! |
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43 | 104 |
fromStream:aStream |
37 | 105 |
"read a targa-image from aFileName. return the receiver (with all |
106 |
relevant instance variables set for the image) or nil on error" |
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||
299 | 108 |
|depth flags nBytes ok lenID hasColorMap imageType |
109 |
cmapOffset cmapLength cmapEntrySize xOrg yOrg |
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t bytesPerPixel bytesPerRow rowIdx startIdx endIdx rle |
299 | 111 |
dSize "{ Class: SmallInteger }" | |
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43 | 113 |
inStream := aStream. |
114 |
aStream binary. |
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lenID := aStream next. |
117 |
hasColorMap := aStream next. |
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imageType := aStream next. |
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cmapOffset := aStream nextShortMSB:false. |
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cmapLength := aStream nextShortMSB:false. |
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cmapEntrySize := aStream next. |
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xOrg := aStream nextShortMSB:false. |
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yOrg := aStream nextShortMSB:false. |
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width := aStream nextShortMSB:false. |
126 |
height := aStream nextShortMSB:false. |
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depth := aStream next. |
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(#(8 "16" 24 32) includes:depth) ifFalse:[ |
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^ self fileFormatError:('unsupported depth: ', depth printString). |
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]. |
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depth == 32 ifTrue:[ |
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'TargaReader [info]: alpha channel ignored' infoPrintCR. |
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] ifFalse:[ |
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'TargaReader [info]: depth: ' infoPrint. depth infoPrintCR. |
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135 |
]. |
551 | 136 |
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"/ MapRGB == 1 |
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"/ RawRGB == 2 |
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"/ RawMono == 3 |
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"/ MapEnCode == 9 |
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"/ RawEnCode == 10 |
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(#(1 2 9 10) includes:imageType) ifFalse:[ |
551 | 144 |
'TargaReader [warning]: unsupported imageType: ' errorPrint. imageType errorPrintCR. |
145 |
]. |
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146 |
'TargaReader [info]: imageType: ' infoPrint. imageType infoPrintCR. |
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299 | 147 |
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"/ flags: |
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149 |
"/ 0000 xxxx attribute-bits-per-pixel |
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"/ 0000 0001 greysc |
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"/ 0000 0010 colour |
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"/ 0000 0011 mapped |
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"/ 0000 0100 rleEncoded |
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"/ 0000 1000 interlaced |
299 | 155 |
"/ 00xx 0000 origin (0 -> lower-left / 1 -> l-r / 2 -> u-l / 3 -> u-r) |
156 |
"/ xx00 0000 interleave (0 -> none / 1 -> odd/even / 2 ->4-fould / 3 reserved) |
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157 |
"/ |
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43 | 158 |
flags := aStream next. |
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(flags bitAnd:2r11000000) ~~ 0 ifTrue:[ |
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^ self fileFormatError:('unsupported interlace: ' , flags printString). |
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]. |
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rle := flags bitTest:2r000001000. |
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flags := flags bitAnd:2r111110111. |
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|
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(flags bitAnd:2r00001111) ~~ 0 ifTrue:[ |
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^ self fileFormatError:('unsupported flags: ' , flags printString). |
551 | 169 |
]. |
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(flags bitAnd:2r00110000) == 16r20 ifTrue:[ |
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orientation := #topLeft |
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] ifFalse:[ |
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(flags bitAnd:2r00110000) == 16r30 ifTrue:[ |
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orientation := #topRight |
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] ifFalse:[ |
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(flags bitAnd:2r00110000) == 16r10 ifTrue:[ |
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orientation := #bottomRight |
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] ifFalse:[ |
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(flags bitAnd:2r00110000) == 0 ifTrue:[ |
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orientation := #bottomLeft |
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] |
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] |
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184 |
] |
299 | 185 |
]. |
186 |
||
187 |
lenID ~~ 0 ifTrue:[ |
|
188 |
aStream skip:lenID |
|
37 | 189 |
]. |
190 |
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191 |
hasColorMap ~~ 0 ifTrue:[ |
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192 |
"/ read the colorMap |
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193 |
colorMap := Array new:cmapLength. |
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194 |
1 to:cmapLength do:[:index | |
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195 |
|r g b| |
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196 |
|
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b := aStream nextByte. |
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198 |
g := aStream nextByte. |
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199 |
r := aStream nextByte. |
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200 |
colorMap at:index put:(Color redByte:r greenByte:g blueByte:b). |
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201 |
]. |
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202 |
'TargaReader [info]: has colorMap' infoPrintCR. |
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203 |
]. |
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|
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depth == 32 ifTrue:[ |
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206 |
imageType == 2 ifTrue:[ |
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207 |
"/ rle ifTrue:[self halt]. |
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208 |
self read32. |
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209 |
] ifFalse:[ |
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210 |
"/ rle ifFalse:[self halt]. |
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211 |
self read32RLE. |
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212 |
]. |
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213 |
bytesPerRow := width*3. |
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214 |
bytesPerPixel := 3. |
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215 |
]. |
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216 |
depth == 24 ifTrue:[ |
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217 |
imageType == 2 ifTrue:[ |
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218 |
"/ rle ifTrue:[self halt]. |
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219 |
self read24. |
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220 |
] ifFalse:[ |
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221 |
"/ rle ifFalse:[self halt]. |
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222 |
self read24RLE. |
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223 |
]. |
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224 |
bytesPerRow := width*3. |
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225 |
bytesPerPixel := 3. |
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226 |
]. |
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227 |
depth == 8 ifTrue:[ |
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228 |
imageType == 1 ifTrue:[ |
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229 |
"/ rle ifTrue:[self halt]. |
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230 |
self read8. |
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231 |
] ifFalse:[ |
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|
232 |
"/ rle ifFalse:[self halt]. |
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|
233 |
self read8RLE |
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|
234 |
]. |
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diff
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|
235 |
bytesPerRow := width. |
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|
236 |
bytesPerPixel := 1. |
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|
237 |
]. |
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|
238 |
|
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|
239 |
orientation == #topLeft ifTrue:[ |
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diff
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|
240 |
] ifFalse:[ |
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diff
changeset
|
241 |
orientation == #topRight ifTrue:[ |
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diff
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|
242 |
"/ flip horizontal |
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diff
changeset
|
243 |
rowIdx := 1. |
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diff
changeset
|
244 |
1 to:height do:[:row | |
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|
245 |
startIdx := rowIdx. |
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diff
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|
246 |
endIdx := rowIdx + bytesPerRow - bytesPerPixel. |
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|
247 |
1 to:width//2 do:[:x | |
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|
248 |
0 to:bytesPerPixel-1 do:[:c | |
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|
249 |
t := data at:startIdx+c. |
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diff
changeset
|
250 |
data at:startIdx+c put:(data at:endIdx+c). |
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|
251 |
data at:endIdx+c put:t. |
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|
252 |
]. |
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|
253 |
startIdx := startIdx + bytesPerPixel. |
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|
254 |
endIdx := endIdx - bytesPerPixel. |
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|
255 |
]. |
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changeset
|
256 |
rowIdx := rowIdx + width. |
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|
257 |
]. |
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parents:
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diff
changeset
|
258 |
] ifFalse:[ |
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diff
changeset
|
259 |
orientation == #bottomLeft ifTrue:[ |
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diff
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|
260 |
"/ flip vertical |
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diff
changeset
|
261 |
startIdx := 1. |
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changeset
|
262 |
endIdx := 1 + ((height - 1) * bytesPerRow). |
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changeset
|
263 |
t := ByteArray new:bytesPerRow. |
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551
diff
changeset
|
264 |
1 to:height//2 do:[:row | |
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parents:
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diff
changeset
|
265 |
t replaceFrom:1 to:bytesPerRow with:data startingAt:startIdx. |
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diff
changeset
|
266 |
data replaceFrom:startIdx to:startIdx+bytesPerRow-1 with:data startingAt:endIdx. |
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changeset
|
267 |
data replaceFrom:endIdx to:endIdx+bytesPerRow-1 with:t startingAt:1. |
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changeset
|
268 |
startIdx := startIdx + bytesPerRow. |
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diff
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|
269 |
endIdx := endIdx - bytesPerRow |
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|
270 |
]. |
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parents:
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diff
changeset
|
271 |
] ifFalse:[ |
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|
272 |
'TargaReader [warning]: unsupported orientation: ' errorPrint. orientation errorPrintCR. |
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|
273 |
] |
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|
274 |
] |
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|
275 |
]. |
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|
276 |
^ self |
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|
277 |
|
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|
278 |
" |
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|
279 |
TargaReader fromFile:'bitmaps/test.tga' |
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|
280 |
" |
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|
281 |
|
815
5fe6cac83186
use common fileFormatError reporter
Claus Gittinger <cg@exept.de>
parents:
647
diff
changeset
|
282 |
"Modified: / 3.2.1998 / 18:18:16 / cg" |
555
f51ec2cc4482
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diff
changeset
|
283 |
! |
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diff
changeset
|
284 |
|
f51ec2cc4482
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diff
changeset
|
285 |
read24 |
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parents:
551
diff
changeset
|
286 |
"read a 24 bit/pixel targa-image" |
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diff
changeset
|
287 |
|
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diff
changeset
|
288 |
|nBytes ok dSize t| |
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parents:
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diff
changeset
|
289 |
|
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parents:
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diff
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|
290 |
data := ByteArray new:(width * height * 3). |
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parents:
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diff
changeset
|
291 |
inStream nextBytes:(dSize := data size) into:data. |
299 | 292 |
|
37 | 293 |
" |
299 | 294 |
mhmh - pixel-byte order is blue-green-red |
295 |
swap blue & red bytes |
|
37 | 296 |
" |
107 | 297 |
nBytes := data size. |
298 |
ok := false. |
|
299 |
||
300 |
%{ /* OPTIONAL */ |
|
301 |
if (__isByteArray(_INST(data))) { |
|
299 | 302 |
int __lastIndex = __intVal(nBytes) - 2; |
303 |
unsigned char *__cp = __ByteArrayInstPtr(_INST(data))->ba_element; |
|
304 |
int __i; |
|
305 |
unsigned char __t; |
|
107 | 306 |
|
299 | 307 |
for (__i=0; __i<__lastIndex; __i+=3, __cp+=3) { |
308 |
__t = __cp[0]; |
|
309 |
__cp[0] = __cp[2]; |
|
310 |
__cp[2] = __t; |
|
311 |
} |
|
312 |
ok = true; |
|
107 | 313 |
} |
314 |
%}. |
|
315 |
ok ifFalse:[ |
|
299 | 316 |
1 to:(dSize - 2) by:3 do:[:i | |
317 |
t := data at:i. |
|
318 |
data at:i put:(data at:i+2). |
|
319 |
data at:i+2 put:t |
|
320 |
] |
|
37 | 321 |
]. |
322 |
||
323 |
photometric := #rgb. |
|
324 |
samplesPerPixel := 3. |
|
325 |
bitsPerSample := #(8 8 8). |
|
555
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diff
changeset
|
326 |
! |
37 | 327 |
|
555
f51ec2cc4482
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parents:
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diff
changeset
|
328 |
read24RLE |
f51ec2cc4482
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Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
329 |
"read an 8 bit/pixel rle encoded targa-image" |
f51ec2cc4482
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Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
330 |
|
f51ec2cc4482
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Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
331 |
|total count dstIndex code n r g b| |
f51ec2cc4482
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parents:
551
diff
changeset
|
332 |
|
f51ec2cc4482
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Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
333 |
data := ByteArray new:((total := width * height * 3)). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
334 |
count := 0. |
f51ec2cc4482
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Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
335 |
dstIndex := 1. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
336 |
[count < total] whileTrue:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
337 |
code := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
338 |
n := (code bitAnd:16r7F) + 1. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
339 |
(code bitAnd:16r80) ~~ 0 ifTrue:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
340 |
b := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
341 |
g := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
342 |
r := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
343 |
n timesRepeat:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
344 |
data at:dstIndex put:r. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
345 |
data at:dstIndex+1 put:g. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
346 |
data at:dstIndex+2 put:b. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
347 |
dstIndex := dstIndex + 3 |
f51ec2cc4482
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Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
348 |
]. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
349 |
] ifFalse:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
350 |
n timesRepeat:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
351 |
b := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
352 |
g := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
353 |
r := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
354 |
data at:dstIndex put:r. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
355 |
data at:dstIndex+1 put:g. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
356 |
data at:dstIndex+2 put:b. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
357 |
dstIndex := dstIndex + 3 |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
358 |
] |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
359 |
]. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
360 |
count := count + (n * 3). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
361 |
]. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
362 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
363 |
photometric := #rgb. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
364 |
samplesPerPixel := 3. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
365 |
bitsPerSample := #(8 8 8). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
366 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
367 |
"Modified: 21.4.1997 / 20:21:12 / cg" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
368 |
"Created: 21.4.1997 / 20:43:23 / cg" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
369 |
! |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
370 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
371 |
read32 |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
372 |
"read a 32 bit/pixel targa-image; skip alpha channel (for now)" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
373 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
374 |
|total dstIndex a r g b| |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
375 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
376 |
data := ByteArray new:((total := width * height * 3)). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
377 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
378 |
dstIndex := 1. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
379 |
[total > 0] whileTrue:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
380 |
inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
381 |
a := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
382 |
b := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
383 |
g := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
384 |
r := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
385 |
data at:dstIndex put:r. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
386 |
data at:dstIndex+1 put:g. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
387 |
data at:dstIndex+2 put:b. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
388 |
dstIndex := dstIndex + 3. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
389 |
total := total - 3. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
390 |
]. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
391 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
392 |
photometric := #rgb. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
393 |
samplesPerPixel := 3. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
394 |
bitsPerSample := #(8 8 8). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
395 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
396 |
"Modified: 21.4.1997 / 20:21:12 / cg" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
397 |
"Created: 21.4.1997 / 20:45:35 / cg" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
398 |
! |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
399 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
400 |
read32RLE |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
401 |
"read a 32 bit/pixel rle encoded targa-image; skip alpha channel (for now)" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
402 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
403 |
|total count dstIndex code n a r g b| |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
404 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
405 |
data := ByteArray new:((total := width * height * 3)). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
406 |
count := 0. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
407 |
dstIndex := 1. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
408 |
[count < total] whileTrue:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
409 |
code := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
410 |
n := (code bitAnd:16r7F) + 1. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
411 |
(code bitAnd:16r80) ~~ 0 ifTrue:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
412 |
a := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
413 |
b := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
414 |
g := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
415 |
r := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
416 |
n timesRepeat:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
417 |
data at:dstIndex put:r. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
418 |
data at:dstIndex+1 put:g. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
419 |
data at:dstIndex+2 put:b. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
420 |
dstIndex := dstIndex + 3 |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
421 |
]. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
422 |
] ifFalse:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
423 |
n timesRepeat:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
424 |
a := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
425 |
b := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
426 |
g := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
427 |
r := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
428 |
data at:dstIndex put:r. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
429 |
data at:dstIndex+1 put:g. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
430 |
data at:dstIndex+2 put:b. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
431 |
dstIndex := dstIndex + 3 |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
432 |
] |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
433 |
]. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
434 |
count := count + (n * 3). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
435 |
]. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
436 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
437 |
photometric := #rgb. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
438 |
samplesPerPixel := 3. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
439 |
bitsPerSample := #(8 8 8). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
440 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
441 |
"Created: 21.4.1997 / 20:43:54 / cg" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
442 |
"Modified: 21.4.1997 / 20:45:49 / cg" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
443 |
! |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
444 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
445 |
read8 |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
446 |
"read an 8 bit/pixel targa-image" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
447 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
448 |
data := ByteArray new:(width * height). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
449 |
inStream nextBytes:(data size) into:data. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
450 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
451 |
colorMap isNil ifTrue:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
452 |
photometric := #blackIs0. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
453 |
] ifFalse:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
454 |
photometric := #palette. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
455 |
]. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
456 |
samplesPerPixel := 1. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
457 |
bitsPerSample := #(8). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
458 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
459 |
"Created: 21.4.1997 / 20:12:35 / cg" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
460 |
"Modified: 21.4.1997 / 20:39:02 / cg" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
461 |
! |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
462 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
463 |
read8RLE |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
464 |
"read an 8 bit/pixel rle encoded targa-image" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
465 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
466 |
|total count dstIndex code n byte| |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
467 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
468 |
data := ByteArray new:((total := width * height)). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
469 |
count := 0. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
470 |
dstIndex := 1. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
471 |
[count < total] whileTrue:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
472 |
code := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
473 |
n := (code bitAnd:16r7F) + 1. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
474 |
(code bitAnd:16r80) ~~ 0 ifTrue:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
475 |
byte := inStream nextByte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
476 |
data from:dstIndex to:dstIndex+n-1 put:byte. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
477 |
] ifFalse:[ |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
478 |
inStream nextBytes:n into:data startingAt:dstIndex. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
479 |
]. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
480 |
count := count + n. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
481 |
dstIndex := dstIndex + n. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
482 |
]. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
483 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
484 |
photometric := #palette. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
485 |
samplesPerPixel := 1. |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
486 |
bitsPerSample := #(8). |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
487 |
|
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
488 |
"Created: 21.4.1997 / 20:19:46 / cg" |
f51ec2cc4482
support RLE, 8 and 32 bit images
Claus Gittinger <cg@exept.de>
parents:
551
diff
changeset
|
489 |
"Modified: 21.4.1997 / 20:21:12 / cg" |
37 | 490 |
! ! |
491 |
||
210 | 492 |
!TargaReader class methodsFor:'documentation'! |
493 |
||
494 |
version |
|
815
5fe6cac83186
use common fileFormatError reporter
Claus Gittinger <cg@exept.de>
parents:
647
diff
changeset
|
495 |
^ '$Header: /cvs/stx/stx/libview2/TargaReader.st,v 1.16 1998-02-03 17:18:33 cg Exp $' |
210 | 496 |
! ! |
37 | 497 |
TargaReader initialize! |