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commit d32c5d62db240017db96511950c58a7594b6f257 Author: Tilman Hausherr <[email protected]> AuthorDate: Thu Apr 9 16:52:16 2026 +0200 PDFBOX-5597: do Math.ceil() when subsampling --- src/main/java/org/apache/pdfbox/jbig2/image/Bitmaps.java | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/main/java/org/apache/pdfbox/jbig2/image/Bitmaps.java b/src/main/java/org/apache/pdfbox/jbig2/image/Bitmaps.java index 250315d..f87fe10 100644 --- a/src/main/java/org/apache/pdfbox/jbig2/image/Bitmaps.java +++ b/src/main/java/org/apache/pdfbox/jbig2/image/Bitmaps.java @@ -419,8 +419,8 @@ public class Bitmaps final int xSubsamplingOffset = param.getSubsamplingXOffset(); final int ySubsamplingOffset = param.getSubsamplingYOffset(); - final int dstWidth = (src.getWidth() - xSubsamplingOffset) / xSubsampling; - final int dstHeight = (src.getHeight() - ySubsamplingOffset) / ySubsampling; + final int dstWidth = (int) Math.ceil((src.getWidth() - xSubsamplingOffset) / (double) xSubsampling); + final int dstHeight = (int) Math.ceil((src.getHeight() - ySubsamplingOffset) / (double) ySubsampling); final Bitmap dst = new Bitmap(dstWidth, dstHeight); @@ -445,7 +445,7 @@ public class Bitmaps if (src == null) throw new IllegalArgumentException("src must not be null"); - final int dstHeight = (src.getWidth() - xSubsamplingOffset) / xSubsampling; + final int dstHeight = (int) Math.ceil((src.getWidth() - xSubsamplingOffset) / (double) xSubsampling); final Bitmap dst = new Bitmap(src.getWidth(), dstHeight); for (int yDst = 0; yDst < dst.getHeight(); yDst++) @@ -468,7 +468,7 @@ public class Bitmaps if (src == null) throw new IllegalArgumentException("src must not be null"); - final int dstWidth = (src.getWidth() - ySubsamplingOffset) / ySubsampling; + final int dstWidth = (int) Math.ceil((src.getWidth() - ySubsamplingOffset) / (double) ySubsampling); final Bitmap dst = new Bitmap(dstWidth, src.getHeight()); for (int yDst = 0, ySrc = ySubsamplingOffset; yDst < dst
