--- a/Depth8Image.st Tue Jan 31 13:48:08 2017 +0100
+++ b/Depth8Image.st Tue Jan 31 13:48:23 2017 +0100
@@ -1,3 +1,5 @@
+"{ Encoding: utf8 }"
+
"
COPYRIGHT (c) 1993 by Claus Gittinger
All Rights Reserved
@@ -196,8 +198,8 @@
srcDepth map bytes|
srcDepth := anImage depth.
- (#(1 2 4) includes:srcDepth) ifFalse:[
- ^ super fromImage:anImage
+ (#[1 2 4] includes:srcDepth) ifFalse:[
+ ^ super fromImage:anImage
].
width := w := anImage width.
@@ -208,14 +210,14 @@
self colormapFromImage:anImage.
colorMap isNil ifTrue:[
- "/ if source has no colorMap, more work is needed ...
- map := #(
- #[0 16rFF]
- #[0 16r55 16rAA 16rFF]
- nil
- #[16r00 16r11 16r22 16r33 16r44 16r55 16r66 16r77
- 16r88 16r99 16rAA 16rBB 16rCC 16rDD 16rEE 16rFF]
- ) at:srcDepth.
+ "/ if source has no colorMap, more work is needed ...
+ map := #(
+ #[0 16rFF]
+ #[0 16r55 16rAA 16rFF]
+ nil
+ #[16r00 16r11 16r22 16r33 16r44 16r55 16r66 16r77
+ 16r88 16r99 16rAA 16rBB 16rCC 16rDD 16rEE 16rFF]
+ ) at:srcDepth.
].
self mask:anImage mask.
@@ -231,14 +233,14 @@
dstIdx := 1.
bytes := self bits.
bytes isNil ifTrue:[
- self bits:(bytes := ByteArray new:(self bytesPerRow * self height)).
+ self bits:(bytes := ByteArray new:(self bytesPerRow * self height)).
].
1 to:h do:[:hi |
- srcBuffer replaceFrom:1 to:srcBytesPerRow with:srcBytes startingAt:srcIdx.
- srcBuffer expandPixels:srcDepth width:w height:1 into:dstBuffer mapping:map.
- bytes replaceFrom:dstIdx to:dstIdx+w-1 with:dstBuffer startingAt:1.
- dstIdx := dstIdx + w.
- srcIdx := srcIdx + srcBytesPerRow.
+ srcBuffer replaceFrom:1 to:srcBytesPerRow with:srcBytes startingAt:srcIdx.
+ srcBuffer expandPixels:srcDepth width:w height:1 into:dstBuffer mapping:map.
+ bytes replaceFrom:dstIdx to:dstIdx+w-1 with:dstBuffer startingAt:1.
+ dstIdx := dstIdx + w.
+ srcIdx := srcIdx + srcBytesPerRow.
]
"
@@ -256,7 +258,8 @@
i8 inspect.
"
- "Modified: 24.4.1997 / 14:01:14 / cg"
+ "Modified: / 24-04-1997 / 14:01:14 / cg"
+ "Modified: / 30-01-2017 / 19:33:25 / stefan"
! !
!Depth8Image methodsFor:'converting images'!
@@ -334,9 +337,6 @@
usedColors do:[:aColorIndex |
|devColor color
- r "{Class: SmallInteger }"
- g "{Class: SmallInteger }"
- b "{Class: SmallInteger }"
mapIndex "{Class: SmallInteger }"|
fit ifTrue:[
@@ -601,8 +601,9 @@
^ f
- "Modified: 15.10.1997 / 01:48:20 / cg"
- "Created: 19.10.1997 / 04:57:05 / cg"
+ "Modified: / 15-10-1997 / 01:48:20 / cg"
+ "Created: / 19-10-1997 / 04:57:05 / cg"
+ "Modified (comment): / 30-01-2017 / 21:00:08 / stefan"
!
anyImageAsTrueColorFormOn:aDevice
@@ -1096,9 +1097,9 @@
w "{Class: SmallInteger }"
h "{Class: SmallInteger }"
index "{Class: SmallInteger }"
+ lookupPos "{Class: SmallInteger }"
ditherIds failed lastColor qScramble
- clrLookup lookupPos
- error clr|
+ clrLookup error clr|
"/
"/ collect color components as integer values (for integer arithmetic)
@@ -1106,77 +1107,77 @@
rgbBytes := ByteArray uninitializedNew:256 * 3.
photometric == #palette ifTrue:[
- lastColor := colorMap size - 1
+ lastColor := colorMap size - 1
] ifFalse:[
- lastColor := 255.
+ lastColor := 255.
].
index := 1.
0 to:lastColor do:[:pix |
- clr := self colorFromValue:pix.
- rgbBytes at:index put:(clr redByte).
- rgbBytes at:index+1 put:(clr greenByte).
- rgbBytes at:index+2 put:(clr blueByte).
-
- index := index + 3.
+ clr := self colorFromValue:pix.
+ rgbBytes at:index put:(clr redByte).
+ rgbBytes at:index+1 put:(clr greenByte).
+ rgbBytes at:index+2 put:(clr blueByte).
+
+ index := index + 3.
].
"/ collect valid ditherColors ...
aMapOrNil isNil ifTrue:[
- ditherColors := colors select:[:clr | clr notNil].
+ ditherColors := colors select:[:clr | clr notNil].
] ifFalse:[
- ditherColors := colors
+ ditherColors := colors
].
"/ ... and sort by manhatten distance from black
qScramble := #(
- "/ 2rX00X00X00X00
-
- 2r000000000000 "/ 0
- 2r000000000100 "/ 1
- 2r000000100000 "/ 2
- 2r000000100100 "/ 3
- 2r000100000000 "/ 4
- 2r000100000100 "/ 5
- 2r000100100000 "/ 6
- 2r000100100100 "/ 7
- 2r100000000000 "/ 8
- 2r100000000100 "/ 9
- 2r100000100000 "/ a
- 2r100000100100 "/ b
- 2r100100000000 "/ c
- 2r100100000100 "/ d
- 2r100100100000 "/ e
- 2r100100100100 "/ f
- ).
+ "/ 2rX00X00X00X00
+
+ 2r000000000000 "/ 0
+ 2r000000000100 "/ 1
+ 2r000000100000 "/ 2
+ 2r000000100100 "/ 3
+ 2r000100000000 "/ 4
+ 2r000100000100 "/ 5
+ 2r000100100000 "/ 6
+ 2r000100100100 "/ 7
+ 2r100000000000 "/ 8
+ 2r100000000100 "/ 9
+ 2r100000100000 "/ a
+ 2r100000100100 "/ b
+ 2r100100000000 "/ c
+ 2r100100000100 "/ d
+ 2r100100100000 "/ e
+ 2r100100100100 "/ f
+ ).
ditherColors := ditherColors sort:[:a :b |
- |cr "{Class: SmallInteger }"
- cg "{Class: SmallInteger }"
- cb "{Class: SmallInteger }"
- i1 "{Class: SmallInteger }"
- i2 "{Class: SmallInteger }"|
-
- cr := a redByte.
- cg := a greenByte.
- cb := a blueByte.
- i1 := qScramble at:((cr bitShift:-4) bitAnd:16r0F) + 1.
- i1 := i1 + ((qScramble at:((cg bitShift:-4) bitAnd:16r0F) + 1) bitShift:-1).
- i1 := i1 + ((qScramble at:((cb bitShift:-4) bitAnd:16r0F) + 1) bitShift:-2).
-
- cr := b redByte.
- cg := b greenByte.
- cb := b blueByte.
- i2 := qScramble at:((cr bitShift:-4) bitAnd:16r0F) + 1.
- i2 := i2 + ((qScramble at:((cg bitShift:-4) bitAnd:16r0F) + 1) bitShift:-1).
- i2 := i2 + ((qScramble at:((cb bitShift:-4) bitAnd:16r0F) + 1) bitShift:-2).
-
- i1 < i2
- ].
+ |cr "{Class: SmallInteger }"
+ cg "{Class: SmallInteger }"
+ cb "{Class: SmallInteger }"
+ i1 "{Class: SmallInteger }"
+ i2 "{Class: SmallInteger }"|
+
+ cr := a redByte.
+ cg := a greenByte.
+ cb := a blueByte.
+ i1 := qScramble at:((cr bitShift:-4) bitAnd:16r0F) + 1.
+ i1 := i1 + ((qScramble at:((cg bitShift:-4) bitAnd:16r0F) + 1) bitShift:-1).
+ i1 := i1 + ((qScramble at:((cb bitShift:-4) bitAnd:16r0F) + 1) bitShift:-2).
+
+ cr := b redByte.
+ cg := b greenByte.
+ cb := b blueByte.
+ i2 := qScramble at:((cr bitShift:-4) bitAnd:16r0F) + 1.
+ i2 := i2 + ((qScramble at:((cg bitShift:-4) bitAnd:16r0F) + 1) bitShift:-1).
+ i2 := i2 + ((qScramble at:((cb bitShift:-4) bitAnd:16r0F) + 1) bitShift:-2).
+
+ i1 < i2
+ ].
aMapOrNil isNil ifTrue:[
- ditherIds := (ditherColors asArray collect:[:clr | clr colorId]) asByteArray.
+ ditherIds := (ditherColors asArray collect:[:clr | clr colorId]) asByteArray.
] ifFalse:[
- ditherIds := aMapOrNil asByteArray
+ ditherIds := aMapOrNil asByteArray
].
"/ build an index table, for fast lookup from manhatten-r-g-b distance
@@ -1185,20 +1186,20 @@
clrLookup := ByteArray new:(4096).
index := 0.
ditherColors keysAndValuesDo:[:clrPosition :clr |
- |r g b i|
-
- r := clr redByte.
- g := clr greenByte.
- b := clr blueByte.
- i := qScramble at:((r bitShift:-4) bitAnd:16r0F) + 1.
- i := i + ((qScramble at:((g bitShift:-4) bitAnd:16r0F) + 1) bitShift:-1).
- i := i + ((qScramble at:((b bitShift:-4) bitAnd:16r0F) + 1) bitShift:-2).
- lookupPos := i.
-
- [index < lookupPos] whileTrue:[
- clrLookup at:(index+1) put:(clrPosition-1-1).
- index := index + 1
- ]
+ |r g b i|
+
+ r := clr redByte.
+ g := clr greenByte.
+ b := clr blueByte.
+ i := qScramble at:((r bitShift:-4) bitAnd:16r0F) + 1.
+ i := i + ((qScramble at:((g bitShift:-4) bitAnd:16r0F) + 1) bitShift:-1).
+ i := i + ((qScramble at:((b bitShift:-4) bitAnd:16r0F) + 1) bitShift:-2).
+ lookupPos := i.
+
+ index+1 to:lookupPos do:[:idx|
+ clrLookup at:idx put:(clrPosition-1-1).
+ ].
+ index := lookupPos.
].
clrLookup from:index+1 to:4096 put:(ditherColors size - 1).
@@ -1214,16 +1215,16 @@
ditherRGBBytes := ByteArray uninitializedNew:(lastColor * 3).
index := 1.
1 to:lastColor do:[:pix |
- clr := ditherColors at:pix.
- ditherRGBBytes at:index put:(clr redByte).
- ditherRGBBytes at:index+1 put:(clr greenByte).
- ditherRGBBytes at:index+2 put:(clr blueByte).
- aMapOrNil isNil ifTrue:[
- ditherIds at:pix put:clr colorId.
- ] ifFalse:[
- ditherIds at:pix put:(aMapOrNil at:pix).
- ].
- index := index + 3.
+ clr := ditherColors at:pix.
+ ditherRGBBytes at:index put:(clr redByte).
+ ditherRGBBytes at:index+1 put:(clr greenByte).
+ ditherRGBBytes at:index+2 put:(clr blueByte).
+ aMapOrNil isNil ifTrue:[
+ ditherIds at:pix put:clr colorId.
+ ] ifFalse:[
+ ditherIds at:pix put:(aMapOrNil at:pix).
+ ].
+ index := index + 3.
].
pseudoBits := ByteArray uninitializedNew:(width * height).
@@ -1253,23 +1254,23 @@
int __nColors = __intVal(lastColor);
int __wR = -1, __wG, __wB;
static int __qScramble[16] = {
- 0x000 /* 2r000000000000 0 */,
- 0x004 /* 2r000000000100 1 */,
- 0x020 /* 2r000000100000 2 */,
- 0x024 /* 2r000000100100 3 */,
- 0x100 /* 2r000100000000 4 */,
- 0x104 /* 2r000100000100 5 */,
- 0x120 /* 2r000100100000 6 */,
- 0x124 /* 2r000100100100 7 */,
- 0x800 /* 2r100000000000 8 */,
- 0x804 /* 2r100000000100 9 */,
- 0x820 /* 2r100000100000 a */,
- 0x824 /* 2r100000100100 b */,
- 0x900 /* 2r100100000000 c */,
- 0x904 /* 2r100100000100 d */,
- 0x920 /* 2r100100100000 e */,
- 0x924 /* 2r100100100100 f */,
- };
+ 0x000 /* 2r000000000000 0 */,
+ 0x004 /* 2r000000000100 1 */,
+ 0x020 /* 2r000000100000 2 */,
+ 0x024 /* 2r000000100100 3 */,
+ 0x100 /* 2r000100000000 4 */,
+ 0x104 /* 2r000100000100 5 */,
+ 0x120 /* 2r000100100000 6 */,
+ 0x124 /* 2r000100100100 7 */,
+ 0x800 /* 2r100000000000 8 */,
+ 0x804 /* 2r100000000100 9 */,
+ 0x820 /* 2r100000100000 a */,
+ 0x824 /* 2r100000100100 b */,
+ 0x900 /* 2r100100000000 c */,
+ 0x904 /* 2r100100000100 d */,
+ 0x920 /* 2r100100100000 e */,
+ 0x924 /* 2r100100100100 f */,
+ };
if (__isByteArrayLike(__INST(bytes))
&& __isByteArray(pseudoBits)
@@ -1278,50 +1279,50 @@
&& __isByteArray(ditherIds)
&& __isByteArray(clrLookup)
&& __isByteArray(error)) {
- failed = false;
-
- srcP = __ByteArrayInstPtr(__INST(bytes))->ba_element;
- dstP = __ByteArrayInstPtr(pseudoBits)->ba_element;
- rgbP = __ByteArrayInstPtr(rgbBytes)->ba_element;
- idP = __ByteArrayInstPtr(ditherIds)->ba_element;
- __clrLookup = __ByteArrayInstPtr(clrLookup)->ba_element;
- errP = (short *) __ByteArrayInstPtr(error)->ba_element;
-
- /*
- * clear error accumulator
- */
- eP = errP;
- bzero(eP, (__w+2) * 2 * 3);
-
- for (__y=__h; __y>0; __y--) {
- __eR = __eG = __eB = 0;
-
- eP = &(errP[3]);
- __eR = eP[0];
- __eG = eP[1];
- __eB = eP[2];
-
- for (__x=__w; __x>0; __x--) {
- int __want;
- int pix;
- int __wantR, __wantG, __wantB;
- int idx;
- int tR, tG, tB;
- int nR, nG, nB;
- int dR, dG, dB;
- int minDelta, bestIdx;
- int cnt;
-
- pix = *srcP++;
-
- /*
- * wR, wG and wB is the wanted r/g/b value;
- */
- idx = pix+pix+pix; /* pix * 3 */
-
- __wantR = rgbP[idx] + __eR;
- __wantG = rgbP[idx+1] + __eG;
- __wantB = rgbP[idx+2] + __eB;
+ failed = false;
+
+ srcP = __ByteArrayInstPtr(__INST(bytes))->ba_element;
+ dstP = __ByteArrayInstPtr(pseudoBits)->ba_element;
+ rgbP = __ByteArrayInstPtr(rgbBytes)->ba_element;
+ idP = __ByteArrayInstPtr(ditherIds)->ba_element;
+ __clrLookup = __ByteArrayInstPtr(clrLookup)->ba_element;
+ errP = (short *) __ByteArrayInstPtr(error)->ba_element;
+
+ /*
+ * clear error accumulator
+ */
+ eP = errP;
+ bzero(eP, (__w+2) * 2 * 3);
+
+ for (__y=__h; __y>0; __y--) {
+ __eR = __eG = __eB = 0;
+
+ eP = &(errP[3]);
+ __eR = eP[0];
+ __eG = eP[1];
+ __eB = eP[2];
+
+ for (__x=__w; __x>0; __x--) {
+ int __want;
+ int pix;
+ int __wantR, __wantG, __wantB;
+ int idx;
+ int tR, tG, tB;
+ int nR, nG, nB;
+ int dR, dG, dB;
+ int minDelta, bestIdx;
+ int cnt;
+
+ pix = *srcP++;
+
+ /*
+ * wR, wG and wB is the wanted r/g/b value;
+ */
+ idx = pix+pix+pix; /* pix * 3 */
+
+ __wantR = rgbP[idx] + __eR;
+ __wantG = rgbP[idx+1] + __eG;
+ __wantB = rgbP[idx+2] + __eB;
#define RED_SCALE 30
#define GREEN_SCALE 59
@@ -1338,236 +1339,236 @@
#define NPROBE 8
#ifndef FAST_LOOKUP
- if ((__wantR == __wR)
- && (__wantG == __wG)
- && (__wantB == __wB)) {
- /*
- * same color again - reuse last bestMatch
- */
- } else
+ if ((__wantR == __wR)
+ && (__wantG == __wG)
+ && (__wantB == __wB)) {
+ /*
+ * same color again - reuse last bestMatch
+ */
+ } else
#endif
- {
- __wR = __wantR;
- __wG = __wantG;
- __wB = __wantB;
+ {
+ __wR = __wantR;
+ __wG = __wantG;
+ __wB = __wantB;
#ifdef FAST_LOOKUP
- if(__wR > 255) __wR = 255;
- else if (__wR < 0) __wR = 0;
- if(__wG > 255) __wG = 255;
- else if (__wG < 0) __wG = 0;
- if(__wB > 255) __wB = 255;
- else if (__wB < 0) __wB = 0;
-
- {
- int lookupIndex;
- int idx, idx0;
- int d, delta;
- unsigned char *dp0;
-
- dp = __ByteArrayInstPtr(ditherRGBBytes)->ba_element;
- lookupIndex = __qScramble[((__wR & 0xF0)>>4)];
- lookupIndex |= __qScramble[((__wG & 0xF0)>>4)] >> 1;
- lookupIndex |= __qScramble[((__wB & 0xF0)>>4)] >> 2;
- idx = bestIdx =__clrLookup[lookupIndex];
- dp += (idx+idx+idx);
-
- /* try color at lookupIndex */
-
- d = dp[0];
- delta = (__wR - d) * RED_SCALE;
- if (delta < 0) delta = -delta;
-
- d = dp[1];
- if (__wG > d)
- delta += (__wG - d) * GREEN_SCALE;
- else
- delta += (d - __wG) * GREEN_SCALE;
- d = dp[2];
- if (__wB > d)
- delta += (__wB - d) * BLUE_SCALE;
- else
- delta += (d - __wB) * BLUE_SCALE;
-
- if (delta <= GOOD_DELTA) {
- goto foundBest;
- }
- minDelta = delta;
+ if(__wR > 255) __wR = 255;
+ else if (__wR < 0) __wR = 0;
+ if(__wG > 255) __wG = 255;
+ else if (__wG < 0) __wG = 0;
+ if(__wB > 255) __wB = 255;
+ else if (__wB < 0) __wB = 0;
+
+ {
+ int lookupIndex;
+ int idx, idx0;
+ int d, delta;
+ unsigned char *dp0;
+
+ dp = __ByteArrayInstPtr(ditherRGBBytes)->ba_element;
+ lookupIndex = __qScramble[((__wR & 0xF0)>>4)];
+ lookupIndex |= __qScramble[((__wG & 0xF0)>>4)] >> 1;
+ lookupIndex |= __qScramble[((__wB & 0xF0)>>4)] >> 2;
+ idx = bestIdx =__clrLookup[lookupIndex];
+ dp += (idx+idx+idx);
+
+ /* try color at lookupIndex */
+
+ d = dp[0];
+ delta = (__wR - d) * RED_SCALE;
+ if (delta < 0) delta = -delta;
+
+ d = dp[1];
+ if (__wG > d)
+ delta += (__wG - d) * GREEN_SCALE;
+ else
+ delta += (d - __wG) * GREEN_SCALE;
+ d = dp[2];
+ if (__wB > d)
+ delta += (__wB - d) * BLUE_SCALE;
+ else
+ delta += (d - __wB) * BLUE_SCALE;
+
+ if (delta <= GOOD_DELTA) {
+ goto foundBest;
+ }
+ minDelta = delta;
# ifndef ONE_SHOT
- idx0 = idx; dp0 = dp;
- cnt = 0;
- while ((++cnt <= NPROBE) && (idx > 0)) {
- /* try previous color(s) */
-
- idx--; dp -= 3;
- d = dp[0];
- delta = (__wR - d) * RED_SCALE;
- if (delta < 0) delta = -delta;
- d = dp[1];
- if (__wG > d)
- delta += (__wG - d) * GREEN_SCALE;
- else
- delta += (d - __wG) * GREEN_SCALE;
- d = dp[2];
- if (__wB > d)
- delta += (__wB - d) * BLUE_SCALE;
- else
- delta += (d - __wB) * BLUE_SCALE;
-
- if (delta < minDelta) {
- bestIdx = idx;
- if (delta <= GOOD_DELTA) {
- goto foundBest;
- }
- minDelta = delta;
- }
- }
-
- idx = idx0; dp = dp0;
- cnt = 0;
- while ((++cnt <= NPROBE) && (++idx < __nColors)) {
- /* try next color */
-
- dp += 3;
- d = dp[0];
- delta = (__wR - d) * RED_SCALE;
- if (delta < 0) delta = -delta;
- d = dp[1];
- if (__wG > d)
- delta += (__wG - d) * GREEN_SCALE;
- else
- delta += (d - __wG) * GREEN_SCALE;
- d = dp[2];
- if (__wB > d)
- delta += (__wB - d) * BLUE_SCALE;
- else
- delta += (d - __wB) * BLUE_SCALE;
-
- if (delta < minDelta) {
- bestIdx = idx;
- if (delta <= GOOD_DELTA) {
- goto foundBest;
- }
- minDelta = delta;
- }
- }
+ idx0 = idx; dp0 = dp;
+ cnt = 0;
+ while ((++cnt <= NPROBE) && (idx > 0)) {
+ /* try previous color(s) */
+
+ idx--; dp -= 3;
+ d = dp[0];
+ delta = (__wR - d) * RED_SCALE;
+ if (delta < 0) delta = -delta;
+ d = dp[1];
+ if (__wG > d)
+ delta += (__wG - d) * GREEN_SCALE;
+ else
+ delta += (d - __wG) * GREEN_SCALE;
+ d = dp[2];
+ if (__wB > d)
+ delta += (__wB - d) * BLUE_SCALE;
+ else
+ delta += (d - __wB) * BLUE_SCALE;
+
+ if (delta < minDelta) {
+ bestIdx = idx;
+ if (delta <= GOOD_DELTA) {
+ goto foundBest;
+ }
+ minDelta = delta;
+ }
+ }
+
+ idx = idx0; dp = dp0;
+ cnt = 0;
+ while ((++cnt <= NPROBE) && (++idx < __nColors)) {
+ /* try next color */
+
+ dp += 3;
+ d = dp[0];
+ delta = (__wR - d) * RED_SCALE;
+ if (delta < 0) delta = -delta;
+ d = dp[1];
+ if (__wG > d)
+ delta += (__wG - d) * GREEN_SCALE;
+ else
+ delta += (d - __wG) * GREEN_SCALE;
+ d = dp[2];
+ if (__wB > d)
+ delta += (__wB - d) * BLUE_SCALE;
+ else
+ delta += (d - __wB) * BLUE_SCALE;
+
+ if (delta < minDelta) {
+ bestIdx = idx;
+ if (delta <= GOOD_DELTA) {
+ goto foundBest;
+ }
+ minDelta = delta;
+ }
+ }
# endif
- }
- foundBest: ;
+ }
+ foundBest: ;
#else
/*
- if(__wR > 255) __wR = 255;
- else if (__wR < 0) __wR = 0;
- if(__wG > 255) __wG = 255;
- else if (__wG < 0) __wG = 0;
- if(__wB > 255) __wB = 255;
- else if (__wB < 0) __wB = 0;
+ if(__wR > 255) __wR = 255;
+ else if (__wR < 0) __wR = 0;
+ if(__wG > 255) __wG = 255;
+ else if (__wG < 0) __wG = 0;
+ if(__wB > 255) __wB = 255;
+ else if (__wB < 0) __wB = 0;
*/
- /* find the best matching color */
-
- minDelta = 99999;
- bestIdx = -1;
- dp = __ByteArrayInstPtr(ditherRGBBytes)->ba_element;
- for (idx = 0; idx<__nColors; idx++) {
- int d, delta;
-
- d = dp[0];
- delta = (__wR - d) * RED_SCALE;
- if (delta < 0) delta = -delta;
- if (delta < minDelta) {
- d = dp[1];
- if (__wG > d)
- delta += (__wG - d) * GREEN_SCALE;
- else
- delta += (d - __wG) * GREEN_SCALE;
- if (delta < minDelta) {
- d = dp[2];
- if (__wB > d)
- delta += (__wB - d) * BLUE_SCALE;
- else
- delta += (d - __wB) * BLUE_SCALE;
-
- if (delta < minDelta) {
- bestIdx = idx;
- if (delta <= GOOD_DELTA) {
- break;
- }
- minDelta = delta;
- }
- }
- }
- dp += 3;
- }
+ /* find the best matching color */
+
+ minDelta = 99999;
+ bestIdx = -1;
+ dp = __ByteArrayInstPtr(ditherRGBBytes)->ba_element;
+ for (idx = 0; idx<__nColors; idx++) {
+ int d, delta;
+
+ d = dp[0];
+ delta = (__wR - d) * RED_SCALE;
+ if (delta < 0) delta = -delta;
+ if (delta < minDelta) {
+ d = dp[1];
+ if (__wG > d)
+ delta += (__wG - d) * GREEN_SCALE;
+ else
+ delta += (d - __wG) * GREEN_SCALE;
+ if (delta < minDelta) {
+ d = dp[2];
+ if (__wB > d)
+ delta += (__wB - d) * BLUE_SCALE;
+ else
+ delta += (d - __wB) * BLUE_SCALE;
+
+ if (delta < minDelta) {
+ bestIdx = idx;
+ if (delta <= GOOD_DELTA) {
+ break;
+ }
+ minDelta = delta;
+ }
+ }
+ }
+ dp += 3;
+ }
#endif
- }
- dp = __ByteArrayInstPtr(ditherRGBBytes)->ba_element;
- dp += bestIdx * 3;
- dR = dp[0];
- dG = dp[1];
- dB = dp[2];
+ }
+ dp = __ByteArrayInstPtr(ditherRGBBytes)->ba_element;
+ dp += bestIdx * 3;
+ dR = dp[0];
+ dG = dp[1];
+ dB = dp[2];
/*
console_fprintf(stderr, "want: %d/%d/%d (%d/%d/%d) got: %d/%d/%d\n",
- __wantR, __wantG, __wantB,
- __wR, __wG, __wB,
- dR, dG, dB);
+ __wantR, __wantG, __wantB,
+ __wR, __wG, __wB,
+ dR, dG, dB);
*/
- /*
- * store the corresponding dither colors colorId
- */
- *dstP++ = idP[bestIdx];
-
- /*
- * the new error & distribute the error
- */
- __eR = __wantR - dR;
- if (__eR) {
- tR = __eR >> 4; /* 16th of error */
- nR = eP[3] + (tR * 7);/* from accu: error for (x+1 / y) */
- eP[0] = tR*5; /* 5/16th for (x / y+1) */
- eP[-3] = tR*3; /* 3/16th for (x-1 / y+1) */
- eP[3] = __eR - (tR*15); /* 1/16th for (x+1 / y+1) */
- __eR = nR;
- } else {
- __eR = eP[3];
- eP[0] = eP[-3] = eP[3] = 0;
- }
-
- __eG = __wantG - dG;
- if (__eG) {
- tG = __eG >> 4;
- nG = eP[4] + (tG * 7);/* plus 7/16'th of this error */
- eP[1] = tG*5;
- eP[-2] = tG*3;
- eP[4] = __eG - (tG*15);
- __eG = nG;
- } else {
- __eG = eP[4];
- eP[1] = eP[-2] = eP[4] = 0;
- }
-
- __eB = __wantB - dB;
- if (__eB) {
- tB = __eB >> 4;
- nB = eP[5] + (tB * 7);
- eP[2] = tB*5;
- eP[-1] = tB*3;
- eP[5] = __eB - (tB*15);
- __eB = nB;
- } else {
- __eB = eP[5];
- eP[2] = eP[-1] = eP[5] = 0;
- }
-
- eP += 3;
- }
- }
+ /*
+ * store the corresponding dither colors colorId
+ */
+ *dstP++ = idP[bestIdx];
+
+ /*
+ * the new error & distribute the error
+ */
+ __eR = __wantR - dR;
+ if (__eR) {
+ tR = __eR >> 4; /* 16th of error */
+ nR = eP[3] + (tR * 7);/* from accu: error for (x+1 / y) */
+ eP[0] = tR*5; /* 5/16th for (x / y+1) */
+ eP[-3] = tR*3; /* 3/16th for (x-1 / y+1) */
+ eP[3] = __eR - (tR*15); /* 1/16th for (x+1 / y+1) */
+ __eR = nR;
+ } else {
+ __eR = eP[3];
+ eP[0] = eP[-3] = eP[3] = 0;
+ }
+
+ __eG = __wantG - dG;
+ if (__eG) {
+ tG = __eG >> 4;
+ nG = eP[4] + (tG * 7);/* plus 7/16'th of this error */
+ eP[1] = tG*5;
+ eP[-2] = tG*3;
+ eP[4] = __eG - (tG*15);
+ __eG = nG;
+ } else {
+ __eG = eP[4];
+ eP[1] = eP[-2] = eP[4] = 0;
+ }
+
+ __eB = __wantB - dB;
+ if (__eB) {
+ tB = __eB >> 4;
+ nB = eP[5] + (tB * 7);
+ eP[2] = tB*5;
+ eP[-1] = tB*3;
+ eP[5] = __eB - (tB*15);
+ __eB = nB;
+ } else {
+ __eB = eP[5];
+ eP[2] = eP[-1] = eP[5] = 0;
+ }
+
+ eP += 3;
+ }
+ }
}
%}.
failed ifTrue:[
- self primitiveFailed.
- ^ nil
+ self primitiveFailed.
+ ^ nil
].
^ pseudoBits
@@ -1952,16 +1953,16 @@
x1 := xLow.
x2 := xHigh.
- srcIndex := (width * y) + 1 + x1.
+ srcIndex := (width * y) + 1.
bytes := self bits.
x1 to:x2 do:[:x |
- pixelValue := bytes at:srcIndex.
- srcIndex := srcIndex + 1.
- aBlock value:x value:pixelValue
+ pixelValue := bytes at:srcIndex+x.
+ aBlock value:x value:pixelValue
]
- "Created: 7.6.1996 / 19:09:47 / cg"
+ "Created: / 07-06-1996 / 19:09:47 / cg"
+ "Modified: / 30-01-2017 / 18:54:15 / stefan"
!
valuesFromX:xStart y:yStart toX:xEnd y:yEnd do:aBlock
@@ -1974,8 +1975,7 @@
However, for real high performance image processing, specialized methods
should be written which know how to deal with specific photometric interpretations."
- |srcIndex "{ Class: SmallInteger }"
- srcNext "{ Class: SmallInteger }"
+ |srcIndex "{ Class: SmallInteger }"
bytesPerRow "{ Class: SmallInteger }"
value "{ Class: SmallInteger }"
x1 "{ Class: SmallInteger }"
@@ -1989,24 +1989,21 @@
y1 := yStart.
y2 := yEnd.
- srcIndex := (width * y1) + x1 + 1 .
+ srcIndex := (width * y1) + 1 .
bytesPerRow := self bytesPerRow.
bytes := self bits.
y1 to:y2 do:[:y |
- srcNext := srcIndex + bytesPerRow.
- x1 to:x2 do:[:x |
- value := bytes at:srcIndex.
- srcIndex := srcIndex + 1.
-
- aBlock value:x value:y value:value
- ].
- srcIndex := srcNext.
+ x1 to:x2 do:[:x |
+ value := bytes at:srcIndex+x.
+ aBlock value:x value:y value:value
+ ].
+ srcIndex := srcIndex + bytesPerRow.
].
- ^ self
-
- "Modified: 11.7.1996 / 20:06:47 / cg"
- "Created: 11.7.1996 / 20:08:11 / cg"
+
+ "Created: / 11-07-1996 / 20:08:11 / cg"
+ "Modified: / 30-01-2017 / 19:04:05 / stefan"
+ "Modified (format): / 31-01-2017 / 12:44:04 / stefan"
! !
!Depth8Image methodsFor:'image manipulations'!
@@ -2169,19 +2166,19 @@
newBytes := ByteArray uninitializedNew:(newWidth * newHeight).
mask notNil ifTrue:[
- newMask := (mask magnifiedBy:scalePoint)
+ newMask := (mask magnifiedBy:scalePoint)
].
newImage := self species new.
newImage
- width:newWidth
- height:newHeight
- photometric:photometric
- samplesPerPixel:samplesPerPixel
- bitsPerSample:#(8)
- colorMap:colorMap copy
- bits:newBytes
- mask:newMask.
+ width:newWidth
+ height:newHeight
+ photometric:photometric
+ samplesPerPixel:samplesPerPixel
+ bitsPerSample:#[8]
+ colorMap:colorMap copy
+ bits:newBytes
+ mask:newMask.
"walk over destination image fetching pixels from source image"
@@ -2199,10 +2196,10 @@
double __mY = __floatVal(mY);
for (__row = 0; __row <= __h; __row++) {
- __srcRowP = __srcP + (__width * (int)((double)__row / __mY));
- for (__col = 0; __col <= __w; __col++) {
- *__dstP++ = __srcRowP[(int)((double)__col / __mX)];
- }
+ __srcRowP = __srcP + (__width * (int)((double)__row / __mY));
+ for (__col = 0; __col <= __w; __col++) {
+ *__dstP++ = __srcRowP[(int)((double)__col / __mX)];
+ }
}
%}
.