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cf1634d |
diff -up cups-1.3.4/pdftops/Stream.cxx.CVE-2007-4352,5392,5393 cups-1.3.4/pdftops/Stream.cxx
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cf1634d |
--- cups-1.3.4/pdftops/Stream.cxx.CVE-2007-4352,5392,5393 2007-07-30 20:53:15.000000000 +0100
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cf1634d |
+++ cups-1.3.4/pdftops/Stream.cxx 2007-11-07 21:12:19.000000000 +0000
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cf1634d |
@@ -1274,23 +1274,26 @@ CCITTFaxStream::CCITTFaxStream(Stream *s
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cf1634d |
columns = columnsA;
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cf1634d |
if (columns < 1) {
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cf1634d |
columns = 1;
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cf1634d |
- }
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cf1634d |
- if (columns + 4 <= 0) {
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cf1634d |
- columns = INT_MAX - 4;
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cf1634d |
+ } else if (columns > INT_MAX - 2) {
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cf1634d |
+ columns = INT_MAX - 2;
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cf1634d |
}
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cf1634d |
rows = rowsA;
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cf1634d |
endOfBlock = endOfBlockA;
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cf1634d |
black = blackA;
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cf1634d |
- refLine = (short *)gmallocn(columns + 4, sizeof(short));
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cf1634d |
- codingLine = (short *)gmallocn(columns + 3, sizeof(short));
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cf1634d |
+ // 0 <= codingLine[0] < codingLine[1] < ... < codingLine[n] = columns
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cf1634d |
+ // ---> max codingLine size = columns + 1
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cf1634d |
+ // refLine has one extra guard entry at the end
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cf1634d |
+ // ---> max refLine size = columns + 2
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cf1634d |
+ codingLine = (int *)gmallocn(columns + 1, sizeof(int));
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cf1634d |
+ refLine = (int *)gmallocn(columns + 2, sizeof(int));
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cf1634d |
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cf1634d |
eof = gFalse;
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cf1634d |
row = 0;
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cf1634d |
nextLine2D = encoding < 0;
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cf1634d |
inputBits = 0;
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cf1634d |
- codingLine[0] = 0;
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cf1634d |
- codingLine[1] = refLine[2] = columns;
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cf1634d |
- a0 = 1;
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cf1634d |
+ codingLine[0] = columns;
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cf1634d |
+ a0i = 1;
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cf1634d |
+ outputBits = 0;
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cf1634d |
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cf1634d |
buf = EOF;
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cf1634d |
}
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cf1634d |
@@ -1309,9 +1312,9 @@ void CCITTFaxStream::reset() {
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cf1634d |
row = 0;
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cf1634d |
nextLine2D = encoding < 0;
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cf1634d |
inputBits = 0;
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cf1634d |
- codingLine[0] = 0;
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cf1634d |
- codingLine[1] = refLine[2] = columns;
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cf1634d |
- a0 = 1;
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cf1634d |
+ codingLine[0] = columns;
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cf1634d |
+ a0i = 1;
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cf1634d |
+ outputBits = 0;
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cf1634d |
buf = EOF;
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cf1634d |
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cf1634d |
// skip any initial zero bits and end-of-line marker, and get the 2D
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cf1634d |
@@ -1328,163 +1331,228 @@ void CCITTFaxStream::reset() {
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cf1634d |
}
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cf1634d |
}
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cf1634d |
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cf1634d |
+inline void CCITTFaxStream::addPixels(int a1, int blackPixels) {
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cf1634d |
+ if (a1 > codingLine[a0i]) {
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cf1634d |
+ if (a1 > columns) {
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cf1634d |
+ error(getPos(), "CCITTFax row is wrong length (%d)", a1);
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cf1634d |
+ err = gTrue;
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cf1634d |
+ a1 = columns;
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cf1634d |
+ }
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cf1634d |
+ if ((a0i & 1) ^ blackPixels) {
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cf1634d |
+ ++a0i;
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cf1634d |
+ }
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cf1634d |
+ codingLine[a0i] = a1;
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cf1634d |
+ }
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cf1634d |
+}
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cf1634d |
+
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cf1634d |
+inline void CCITTFaxStream::addPixelsNeg(int a1, int blackPixels) {
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cf1634d |
+ if (a1 > codingLine[a0i]) {
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cf1634d |
+ if (a1 > columns) {
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cf1634d |
+ error(getPos(), "CCITTFax row is wrong length (%d)", a1);
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cf1634d |
+ err = gTrue;
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cf1634d |
+ a1 = columns;
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cf1634d |
+ }
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cf1634d |
+ if ((a0i & 1) ^ blackPixels) {
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cf1634d |
+ ++a0i;
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cf1634d |
+ }
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cf1634d |
+ codingLine[a0i] = a1;
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cf1634d |
+ } else if (a1 < codingLine[a0i]) {
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cf1634d |
+ if (a1 < 0) {
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cf1634d |
+ error(getPos(), "Invalid CCITTFax code");
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cf1634d |
+ err = gTrue;
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cf1634d |
+ a1 = 0;
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cf1634d |
+ }
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cf1634d |
+ while (a0i > 0 && a1 <= codingLine[a0i - 1]) {
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cf1634d |
+ --a0i;
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cf1634d |
+ }
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cf1634d |
+ codingLine[a0i] = a1;
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cf1634d |
+ }
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cf1634d |
+}
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cf1634d |
+
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cf1634d |
+
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cf1634d |
int CCITTFaxStream::lookChar() {
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cf1634d |
short code1, code2, code3;
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cf1634d |
- int a0New;
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cf1634d |
- GBool err, gotEOL;
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cf1634d |
- int ret;
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cf1634d |
- int bits, i;
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cf1634d |
+ int b1i, blackPixels, i, bits;
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cf1634d |
+ GBool gotEOL;
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cf1634d |
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cf1634d |
- // if at eof just return EOF
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cf1634d |
- if (eof && codingLine[a0] >= columns) {
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cf1634d |
- return EOF;
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cf1634d |
+ if (buf != EOF) {
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cf1634d |
+ return buf;
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cf1634d |
}
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cf1634d |
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cf1634d |
// read the next row
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cf1634d |
- err = gFalse;
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cf1634d |
- if (codingLine[a0] >= columns) {
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cf1634d |
+ if (outputBits == 0) {
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cf1634d |
+
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cf1634d |
+ // if at eof just return EOF
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cf1634d |
+ if (eof) {
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cf1634d |
+ return EOF;
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cf1634d |
+ }
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cf1634d |
+
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cf1634d |
+ err = gFalse;
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cf1634d |
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cf1634d |
// 2-D encoding
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cf1634d |
if (nextLine2D) {
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cf1634d |
for (i = 0; codingLine[i] < columns; ++i)
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cf1634d |
refLine[i] = codingLine[i];
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cf1634d |
- refLine[i] = refLine[i + 1] = columns;
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cf1634d |
- b1 = 1;
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cf1634d |
- a0New = codingLine[a0 = 0] = 0;
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cf1634d |
- do {
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cf1634d |
+ refLine[i++] = columns;
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cf1634d |
+ refLine[i] = columns;
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cf1634d |
+ codingLine[0] = 0;
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cf1634d |
+ a0i = 0;
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cf1634d |
+ b1i = 0;
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cf1634d |
+ blackPixels = 0;
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cf1634d |
+ // invariant:
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cf1634d |
+ // refLine[b1i-1] <= codingLine[a0i] < refLine[b1i] < refLine[b1i+1]
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cf1634d |
+ // <= columns
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cf1634d |
+ // exception at left edge:
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cf1634d |
+ // codingLine[a0i = 0] = refLine[b1i = 0] = 0 is possible
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cf1634d |
+ // exception at right edge:
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cf1634d |
+ // refLine[b1i] = refLine[b1i+1] = columns is possible
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cf1634d |
+ while (codingLine[a0i] < columns) {
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cf1634d |
code1 = getTwoDimCode();
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cf1634d |
switch (code1) {
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cf1634d |
case twoDimPass:
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cf1634d |
- if (refLine[b1] < columns) {
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cf1634d |
- a0New = refLine[b1 + 1];
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cf1634d |
- b1 += 2;
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cf1634d |
+ addPixels(refLine[b1i + 1], blackPixels);
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cf1634d |
+ if (refLine[b1i + 1] < columns) {
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cf1634d |
+ b1i += 2;
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cf1634d |
}
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cf1634d |
break;
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cf1634d |
case twoDimHoriz:
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cf1634d |
- if ((a0 & 1) == 0) {
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cf1634d |
- code1 = code2 = 0;
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cf1634d |
+ code1 = code2 = 0;
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cf1634d |
+ if (blackPixels) {
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cf1634d |
do {
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cf1634d |
- code1 += code3 = getWhiteCode();
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cf1634d |
+ code1 += code3 = getBlackCode();
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cf1634d |
} while (code3 >= 64);
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cf1634d |
do {
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cf1634d |
- code2 += code3 = getBlackCode();
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cf1634d |
+ code2 += code3 = getWhiteCode();
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cf1634d |
} while (code3 >= 64);
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cf1634d |
} else {
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cf1634d |
- code1 = code2 = 0;
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cf1634d |
do {
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cf1634d |
- code1 += code3 = getBlackCode();
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cf1634d |
+ code1 += code3 = getWhiteCode();
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cf1634d |
} while (code3 >= 64);
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cf1634d |
do {
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cf1634d |
- code2 += code3 = getWhiteCode();
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cf1634d |
+ code2 += code3 = getBlackCode();
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cf1634d |
} while (code3 >= 64);
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cf1634d |
}
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cf1634d |
- if (code1 > 0 || code2 > 0) {
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cf1634d |
- codingLine[a0 + 1] = a0New + code1;
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cf1634d |
- ++a0;
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cf1634d |
- a0New = codingLine[a0 + 1] = codingLine[a0] + code2;
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cf1634d |
- ++a0;
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cf1634d |
- while (refLine[b1] <= codingLine[a0] && refLine[b1] < columns)
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cf1634d |
- b1 += 2;
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cf1634d |
+ addPixels(codingLine[a0i] + code1, blackPixels);
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cf1634d |
+ if (codingLine[a0i] < columns) {
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cf1634d |
+ addPixels(codingLine[a0i] + code2, blackPixels ^ 1);
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cf1634d |
+ }
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cf1634d |
+ while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
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cf1634d |
+ b1i += 2;
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cf1634d |
}
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cf1634d |
break;
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cf1634d |
- case twoDimVert0:
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cf1634d |
- a0New = codingLine[++a0] = refLine[b1];
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cf1634d |
- if (refLine[b1] < columns) {
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cf1634d |
- ++b1;
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cf1634d |
- while (refLine[b1] <= codingLine[a0] && refLine[b1] < columns)
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cf1634d |
- b1 += 2;
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cf1634d |
+ case twoDimVertR3:
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cf1634d |
+ addPixels(refLine[b1i] + 3, blackPixels);
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cf1634d |
+ blackPixels ^= 1;
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cf1634d |
+ if (codingLine[a0i] < columns) {
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cf1634d |
+ ++b1i;
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cf1634d |
+ while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
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cf1634d |
+ b1i += 2;
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cf1634d |
+ }
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cf1634d |
}
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cf1634d |
break;
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cf1634d |
- case twoDimVertR1:
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cf1634d |
- a0New = codingLine[++a0] = refLine[b1] + 1;
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cf1634d |
- if (refLine[b1] < columns) {
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cf1634d |
- ++b1;
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cf1634d |
- while (refLine[b1] <= codingLine[a0] && refLine[b1] < columns)
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cf1634d |
- b1 += 2;
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cf1634d |
+ case twoDimVertR2:
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cf1634d |
+ addPixels(refLine[b1i] + 2, blackPixels);
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cf1634d |
+ blackPixels ^= 1;
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cf1634d |
+ if (codingLine[a0i] < columns) {
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cf1634d |
+ ++b1i;
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cf1634d |
+ while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
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cf1634d |
+ b1i += 2;
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cf1634d |
+ }
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cf1634d |
}
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cf1634d |
break;
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cf1634d |
- case twoDimVertL1:
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cf1634d |
- if (a0 == 0 || refLine[b1] - 1 > a0New) {
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cf1634d |
- a0New = codingLine[++a0] = refLine[b1] - 1;
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cf1634d |
- --b1;
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cf1634d |
- while (refLine[b1] <= codingLine[a0] && refLine[b1] < columns)
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cf1634d |
- b1 += 2;
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cf1634d |
+ case twoDimVertR1:
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cf1634d |
+ addPixels(refLine[b1i] + 1, blackPixels);
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cf1634d |
+ blackPixels ^= 1;
|
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cf1634d |
+ if (codingLine[a0i] < columns) {
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cf1634d |
+ ++b1i;
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cf1634d |
+ while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
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cf1634d |
+ b1i += 2;
|
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|
cf1634d |
+ }
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cf1634d |
}
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cf1634d |
break;
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cf1634d |
- case twoDimVertR2:
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cf1634d |
- a0New = codingLine[++a0] = refLine[b1] + 2;
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|
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cf1634d |
- if (refLine[b1] < columns) {
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cf1634d |
- ++b1;
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|
cf1634d |
- while (refLine[b1] <= codingLine[a0] && refLine[b1] < columns)
|
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cf1634d |
- b1 += 2;
|
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cf1634d |
+ case twoDimVert0:
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cf1634d |
+ addPixels(refLine[b1i], blackPixels);
|
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|
cf1634d |
+ blackPixels ^= 1;
|
|
|
cf1634d |
+ if (codingLine[a0i] < columns) {
|
|
|
cf1634d |
+ ++b1i;
|
|
|
cf1634d |
+ while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
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cf1634d |
+ b1i += 2;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
}
|
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|
cf1634d |
break;
|
|
|
cf1634d |
- case twoDimVertL2:
|
|
|
cf1634d |
- if (a0 == 0 || refLine[b1] - 2 > a0New) {
|
|
|
cf1634d |
- a0New = codingLine[++a0] = refLine[b1] - 2;
|
|
|
cf1634d |
- --b1;
|
|
|
cf1634d |
- while (refLine[b1] <= codingLine[a0] && refLine[b1] < columns)
|
|
|
cf1634d |
- b1 += 2;
|
|
|
cf1634d |
+ case twoDimVertL3:
|
|
|
cf1634d |
+ addPixelsNeg(refLine[b1i] - 3, blackPixels);
|
|
|
cf1634d |
+ blackPixels ^= 1;
|
|
|
cf1634d |
+ if (codingLine[a0i] < columns) {
|
|
|
cf1634d |
+ if (b1i > 0) {
|
|
|
cf1634d |
+ --b1i;
|
|
|
cf1634d |
+ } else {
|
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|
cf1634d |
+ ++b1i;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
+ while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
|
|
|
cf1634d |
+ b1i += 2;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
}
|
|
|
cf1634d |
break;
|
|
|
cf1634d |
- case twoDimVertR3:
|
|
|
cf1634d |
- a0New = codingLine[++a0] = refLine[b1] + 3;
|
|
|
cf1634d |
- if (refLine[b1] < columns) {
|
|
|
cf1634d |
- ++b1;
|
|
|
cf1634d |
- while (refLine[b1] <= codingLine[a0] && refLine[b1] < columns)
|
|
|
cf1634d |
- b1 += 2;
|
|
|
cf1634d |
+ case twoDimVertL2:
|
|
|
cf1634d |
+ addPixelsNeg(refLine[b1i] - 2, blackPixels);
|
|
|
cf1634d |
+ blackPixels ^= 1;
|
|
|
cf1634d |
+ if (codingLine[a0i] < columns) {
|
|
|
cf1634d |
+ if (b1i > 0) {
|
|
|
cf1634d |
+ --b1i;
|
|
|
cf1634d |
+ } else {
|
|
|
cf1634d |
+ ++b1i;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
+ while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
|
|
|
cf1634d |
+ b1i += 2;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
}
|
|
|
cf1634d |
break;
|
|
|
cf1634d |
- case twoDimVertL3:
|
|
|
cf1634d |
- if (a0 == 0 || refLine[b1] - 3 > a0New) {
|
|
|
cf1634d |
- a0New = codingLine[++a0] = refLine[b1] - 3;
|
|
|
cf1634d |
- --b1;
|
|
|
cf1634d |
- while (refLine[b1] <= codingLine[a0] && refLine[b1] < columns)
|
|
|
cf1634d |
- b1 += 2;
|
|
|
cf1634d |
+ case twoDimVertL1:
|
|
|
cf1634d |
+ addPixelsNeg(refLine[b1i] - 1, blackPixels);
|
|
|
cf1634d |
+ blackPixels ^= 1;
|
|
|
cf1634d |
+ if (codingLine[a0i] < columns) {
|
|
|
cf1634d |
+ if (b1i > 0) {
|
|
|
cf1634d |
+ --b1i;
|
|
|
cf1634d |
+ } else {
|
|
|
cf1634d |
+ ++b1i;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
+ while (refLine[b1i] <= codingLine[a0i] && refLine[b1i] < columns) {
|
|
|
cf1634d |
+ b1i += 2;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
}
|
|
|
cf1634d |
break;
|
|
|
cf1634d |
case EOF:
|
|
|
cf1634d |
+ addPixels(columns, 0);
|
|
|
cf1634d |
eof = gTrue;
|
|
|
cf1634d |
- codingLine[a0 = 0] = columns;
|
|
|
cf1634d |
- return EOF;
|
|
|
cf1634d |
+ break;
|
|
|
cf1634d |
default:
|
|
|
cf1634d |
error(getPos(), "Bad 2D code %04x in CCITTFax stream", code1);
|
|
|
cf1634d |
+ addPixels(columns, 0);
|
|
|
cf1634d |
err = gTrue;
|
|
|
cf1634d |
break;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
- } while (codingLine[a0] < columns);
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
|
|
|
cf1634d |
// 1-D encoding
|
|
|
cf1634d |
} else {
|
|
|
cf1634d |
- codingLine[a0 = 0] = 0;
|
|
|
cf1634d |
- while (1) {
|
|
|
cf1634d |
+ codingLine[0] = 0;
|
|
|
cf1634d |
+ a0i = 0;
|
|
|
cf1634d |
+ blackPixels = 0;
|
|
|
cf1634d |
+ while (codingLine[a0i] < columns) {
|
|
|
cf1634d |
code1 = 0;
|
|
|
cf1634d |
- do {
|
|
|
cf1634d |
- code1 += code3 = getWhiteCode();
|
|
|
cf1634d |
- } while (code3 >= 64);
|
|
|
cf1634d |
- codingLine[a0+1] = codingLine[a0] + code1;
|
|
|
cf1634d |
- ++a0;
|
|
|
cf1634d |
- if (codingLine[a0] >= columns)
|
|
|
cf1634d |
- break;
|
|
|
cf1634d |
- code2 = 0;
|
|
|
cf1634d |
- do {
|
|
|
cf1634d |
- code2 += code3 = getBlackCode();
|
|
|
cf1634d |
- } while (code3 >= 64);
|
|
|
cf1634d |
- codingLine[a0+1] = codingLine[a0] + code2;
|
|
|
cf1634d |
- ++a0;
|
|
|
cf1634d |
- if (codingLine[a0] >= columns)
|
|
|
cf1634d |
- break;
|
|
|
cf1634d |
- }
|
|
|
cf1634d |
- }
|
|
|
cf1634d |
-
|
|
|
cf1634d |
- if (codingLine[a0] != columns) {
|
|
|
cf1634d |
- error(getPos(), "CCITTFax row is wrong length (%d)", codingLine[a0]);
|
|
|
cf1634d |
- // force the row to be the correct length
|
|
|
cf1634d |
- while (codingLine[a0] > columns) {
|
|
|
cf1634d |
- --a0;
|
|
|
cf1634d |
+ if (blackPixels) {
|
|
|
cf1634d |
+ do {
|
|
|
cf1634d |
+ code1 += code3 = getBlackCode();
|
|
|
cf1634d |
+ } while (code3 >= 64);
|
|
|
cf1634d |
+ } else {
|
|
|
cf1634d |
+ do {
|
|
|
cf1634d |
+ code1 += code3 = getWhiteCode();
|
|
|
cf1634d |
+ } while (code3 >= 64);
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
+ addPixels(codingLine[a0i] + code1, blackPixels);
|
|
|
cf1634d |
+ blackPixels ^= 1;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
- codingLine[++a0] = columns;
|
|
|
cf1634d |
- err = gTrue;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
|
|
|
cf1634d |
// byte-align the row
|
|
|
cf1634d |
@@ -1545,14 +1613,17 @@ int CCITTFaxStream::lookChar() {
|
|
|
cf1634d |
// this if we know the stream contains end-of-line markers because
|
|
|
cf1634d |
// the "just plow on" technique tends to work better otherwise
|
|
|
cf1634d |
} else if (err && endOfLine) {
|
|
|
cf1634d |
- do {
|
|
|
cf1634d |
+ while (1) {
|
|
|
cf1634d |
+ code1 = lookBits(13);
|
|
|
cf1634d |
if (code1 == EOF) {
|
|
|
cf1634d |
eof = gTrue;
|
|
|
cf1634d |
return EOF;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
+ if ((code1 >> 1) == 0x001) {
|
|
|
cf1634d |
+ break;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
eatBits(1);
|
|
|
cf1634d |
- code1 = lookBits(13);
|
|
|
cf1634d |
- } while ((code1 >> 1) != 0x001);
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
eatBits(12);
|
|
|
cf1634d |
if (encoding > 0) {
|
|
|
cf1634d |
eatBits(1);
|
|
|
cf1634d |
@@ -1560,11 +1631,11 @@ int CCITTFaxStream::lookChar() {
|
|
|
cf1634d |
}
|
|
|
cf1634d |
}
|
|
|
cf1634d |
|
|
|
cf1634d |
- a0 = 0;
|
|
|
cf1634d |
- outputBits = codingLine[1] - codingLine[0];
|
|
|
cf1634d |
- if (outputBits == 0) {
|
|
|
cf1634d |
- a0 = 1;
|
|
|
cf1634d |
- outputBits = codingLine[2] - codingLine[1];
|
|
|
cf1634d |
+ // set up for output
|
|
|
cf1634d |
+ if (codingLine[0] > 0) {
|
|
|
cf1634d |
+ outputBits = codingLine[a0i = 0];
|
|
|
cf1634d |
+ } else {
|
|
|
cf1634d |
+ outputBits = codingLine[a0i = 1];
|
|
|
cf1634d |
}
|
|
|
cf1634d |
|
|
|
cf1634d |
++row;
|
|
|
cf1634d |
@@ -1572,39 +1643,43 @@ int CCITTFaxStream::lookChar() {
|
|
|
cf1634d |
|
|
|
cf1634d |
// get a byte
|
|
|
cf1634d |
if (outputBits >= 8) {
|
|
|
cf1634d |
- ret = ((a0 & 1) == 0) ? 0xff : 0x00;
|
|
|
cf1634d |
- if ((outputBits -= 8) == 0) {
|
|
|
cf1634d |
- ++a0;
|
|
|
cf1634d |
- if (codingLine[a0] < columns) {
|
|
|
cf1634d |
- outputBits = codingLine[a0 + 1] - codingLine[a0];
|
|
|
cf1634d |
- }
|
|
|
cf1634d |
+ buf = (a0i & 1) ? 0x00 : 0xff;
|
|
|
cf1634d |
+ outputBits -= 8;
|
|
|
cf1634d |
+ if (outputBits == 0 && codingLine[a0i] < columns) {
|
|
|
cf1634d |
+ ++a0i;
|
|
|
cf1634d |
+ outputBits = codingLine[a0i] - codingLine[a0i - 1];
|
|
|
cf1634d |
}
|
|
|
cf1634d |
} else {
|
|
|
cf1634d |
bits = 8;
|
|
|
cf1634d |
- ret = 0;
|
|
|
cf1634d |
+ buf = 0;
|
|
|
cf1634d |
do {
|
|
|
cf1634d |
if (outputBits > bits) {
|
|
|
cf1634d |
- i = bits;
|
|
|
cf1634d |
- bits = 0;
|
|
|
cf1634d |
- if ((a0 & 1) == 0) {
|
|
|
cf1634d |
- ret |= 0xff >> (8 - i);
|
|
|
cf1634d |
+ buf <<= bits;
|
|
|
cf1634d |
+ if (!(a0i & 1)) {
|
|
|
cf1634d |
+ buf |= 0xff >> (8 - bits);
|
|
|
cf1634d |
}
|
|
|
cf1634d |
- outputBits -= i;
|
|
|
cf1634d |
+ outputBits -= bits;
|
|
|
cf1634d |
+ bits = 0;
|
|
|
cf1634d |
} else {
|
|
|
cf1634d |
- i = outputBits;
|
|
|
cf1634d |
- bits -= outputBits;
|
|
|
cf1634d |
- if ((a0 & 1) == 0) {
|
|
|
cf1634d |
- ret |= (0xff >> (8 - i)) << bits;
|
|
|
cf1634d |
+ buf <<= outputBits;
|
|
|
cf1634d |
+ if (!(a0i & 1)) {
|
|
|
cf1634d |
+ buf |= 0xff >> (8 - outputBits);
|
|
|
cf1634d |
}
|
|
|
cf1634d |
+ bits -= outputBits;
|
|
|
cf1634d |
outputBits = 0;
|
|
|
cf1634d |
- ++a0;
|
|
|
cf1634d |
- if (codingLine[a0] < columns) {
|
|
|
cf1634d |
- outputBits = codingLine[a0 + 1] - codingLine[a0];
|
|
|
cf1634d |
+ if (codingLine[a0i] < columns) {
|
|
|
cf1634d |
+ ++a0i;
|
|
|
cf1634d |
+ outputBits = codingLine[a0i] - codingLine[a0i - 1];
|
|
|
cf1634d |
+ } else if (bits > 0) {
|
|
|
cf1634d |
+ buf <<= bits;
|
|
|
cf1634d |
+ bits = 0;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
}
|
|
|
cf1634d |
- } while (bits > 0 && codingLine[a0] < columns);
|
|
|
cf1634d |
+ } while (bits);
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
+ if (black) {
|
|
|
cf1634d |
+ buf ^= 0xff;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
- buf = black ? (ret ^ 0xff) : ret;
|
|
|
cf1634d |
return buf;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
|
|
|
cf1634d |
@@ -1646,6 +1721,9 @@ short CCITTFaxStream::getWhiteCode() {
|
|
|
cf1634d |
code = 0; // make gcc happy
|
|
|
cf1634d |
if (endOfBlock) {
|
|
|
cf1634d |
code = lookBits(12);
|
|
|
cf1634d |
+ if (code == EOF) {
|
|
|
cf1634d |
+ return 1;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
if ((code >> 5) == 0) {
|
|
|
cf1634d |
p = &whiteTab1[code];
|
|
|
cf1634d |
} else {
|
|
|
cf1634d |
@@ -1658,6 +1736,9 @@ short CCITTFaxStream::getWhiteCode() {
|
|
|
cf1634d |
} else {
|
|
|
cf1634d |
for (n = 1; n <= 9; ++n) {
|
|
|
cf1634d |
code = lookBits(n);
|
|
|
cf1634d |
+ if (code == EOF) {
|
|
|
cf1634d |
+ return 1;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
if (n < 9) {
|
|
|
cf1634d |
code <<= 9 - n;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
@@ -1669,6 +1750,9 @@ short CCITTFaxStream::getWhiteCode() {
|
|
|
cf1634d |
}
|
|
|
cf1634d |
for (n = 11; n <= 12; ++n) {
|
|
|
cf1634d |
code = lookBits(n);
|
|
|
cf1634d |
+ if (code == EOF) {
|
|
|
cf1634d |
+ return 1;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
if (n < 12) {
|
|
|
cf1634d |
code <<= 12 - n;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
@@ -1694,9 +1778,12 @@ short CCITTFaxStream::getBlackCode() {
|
|
|
cf1634d |
code = 0; // make gcc happy
|
|
|
cf1634d |
if (endOfBlock) {
|
|
|
cf1634d |
code = lookBits(13);
|
|
|
cf1634d |
+ if (code == EOF) {
|
|
|
cf1634d |
+ return 1;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
if ((code >> 7) == 0) {
|
|
|
cf1634d |
p = &blackTab1[code];
|
|
|
cf1634d |
- } else if ((code >> 9) == 0) {
|
|
|
cf1634d |
+ } else if ((code >> 9) == 0 && (code >> 7) != 0) {
|
|
|
cf1634d |
p = &blackTab2[(code >> 1) - 64];
|
|
|
cf1634d |
} else {
|
|
|
cf1634d |
p = &blackTab3[code >> 7];
|
|
|
cf1634d |
@@ -1708,6 +1795,9 @@ short CCITTFaxStream::getBlackCode() {
|
|
|
cf1634d |
} else {
|
|
|
cf1634d |
for (n = 2; n <= 6; ++n) {
|
|
|
cf1634d |
code = lookBits(n);
|
|
|
cf1634d |
+ if (code == EOF) {
|
|
|
cf1634d |
+ return 1;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
if (n < 6) {
|
|
|
cf1634d |
code <<= 6 - n;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
@@ -1719,6 +1809,9 @@ short CCITTFaxStream::getBlackCode() {
|
|
|
cf1634d |
}
|
|
|
cf1634d |
for (n = 7; n <= 12; ++n) {
|
|
|
cf1634d |
code = lookBits(n);
|
|
|
cf1634d |
+ if (code == EOF) {
|
|
|
cf1634d |
+ return 1;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
if (n < 12) {
|
|
|
cf1634d |
code <<= 12 - n;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
@@ -1732,6 +1825,9 @@ short CCITTFaxStream::getBlackCode() {
|
|
|
cf1634d |
}
|
|
|
cf1634d |
for (n = 10; n <= 13; ++n) {
|
|
|
cf1634d |
code = lookBits(n);
|
|
|
cf1634d |
+ if (code == EOF) {
|
|
|
cf1634d |
+ return 1;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
if (n < 13) {
|
|
|
cf1634d |
code <<= 13 - n;
|
|
|
cf1634d |
}
|
|
|
cf1634d |
@@ -1954,6 +2050,12 @@ void DCTStream::reset() {
|
|
|
cf1634d |
// allocate a buffer for the whole image
|
|
|
cf1634d |
bufWidth = ((width + mcuWidth - 1) / mcuWidth) * mcuWidth;
|
|
|
cf1634d |
bufHeight = ((height + mcuHeight - 1) / mcuHeight) * mcuHeight;
|
|
|
cf1634d |
+ if (bufWidth <= 0 || bufHeight <= 0 ||
|
|
|
cf1634d |
+ bufWidth > INT_MAX / bufWidth / (int)sizeof(int)) {
|
|
|
cf1634d |
+ error(getPos(), "Invalid image size in DCT stream");
|
|
|
cf1634d |
+ y = height;
|
|
|
cf1634d |
+ return;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
for (i = 0; i < numComps; ++i) {
|
|
|
cf1634d |
frameBuf[i] = (int *)gmallocn(bufWidth * bufHeight, sizeof(int));
|
|
|
cf1634d |
memset(frameBuf[i], 0, bufWidth * bufHeight * sizeof(int));
|
|
|
cf1634d |
@@ -3015,6 +3117,11 @@ GBool DCTStream::readScanInfo() {
|
|
|
cf1634d |
}
|
|
|
cf1634d |
scanInfo.firstCoeff = str->getChar();
|
|
|
cf1634d |
scanInfo.lastCoeff = str->getChar();
|
|
|
cf1634d |
+ if (scanInfo.firstCoeff < 0 || scanInfo.lastCoeff > 63 ||
|
|
|
cf1634d |
+ scanInfo.firstCoeff > scanInfo.lastCoeff) {
|
|
|
cf1634d |
+ error(getPos(), "Bad DCT coefficient numbers in scan info block");
|
|
|
cf1634d |
+ return gFalse;
|
|
|
cf1634d |
+ }
|
|
|
cf1634d |
c = str->getChar();
|
|
|
cf1634d |
scanInfo.ah = (c >> 4) & 0x0f;
|
|
|
cf1634d |
scanInfo.al = c & 0x0f;
|
|
|
cf1634d |
diff -up cups-1.3.4/pdftops/Stream.h.CVE-2007-4352,5392,5393 cups-1.3.4/pdftops/Stream.h
|
|
|
cf1634d |
--- cups-1.3.4/pdftops/Stream.h.CVE-2007-4352,5392,5393 2006-02-13 03:08:11.000000000 +0000
|
|
|
cf1634d |
+++ cups-1.3.4/pdftops/Stream.h 2007-11-07 21:12:19.000000000 +0000
|
|
|
cf1634d |
@@ -519,13 +519,15 @@ private:
|
|
|
cf1634d |
int row; // current row
|
|
|
cf1634d |
int inputBuf; // input buffer
|
|
|
cf1634d |
int inputBits; // number of bits in input buffer
|
|
|
cf1634d |
- short *refLine; // reference line changing elements
|
|
|
cf1634d |
- int b1; // index into refLine
|
|
|
cf1634d |
- short *codingLine; // coding line changing elements
|
|
|
cf1634d |
- int a0; // index into codingLine
|
|
|
cf1634d |
+ int *codingLine; // coding line changing elements
|
|
|
cf1634d |
+ int *refLine; // reference line changing elements
|
|
|
cf1634d |
+ int a0i; // index into codingLine
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+ GBool err; // error on current line
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cf1634d |
int outputBits; // remaining ouput bits
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cf1634d |
int buf; // character buffer
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cf1634d |
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cf1634d |
+ void addPixels(int a1, int black);
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cf1634d |
+ void addPixelsNeg(int a1, int black);
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cf1634d |
short getTwoDimCode();
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cf1634d |
short getWhiteCode();
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cf1634d |
short getBlackCode();
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