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Posted to commits@commons.apache.org by da...@apache.org on 2012/04/13 21:33:22 UTC
svn commit: r1325915 -
/commons/proper/sanselan/trunk/src/main/java/org/apache/commons/sanselan/formats/png/BitParser.java
Author: damjan
Date: Fri Apr 13 19:33:22 2012
New Revision: 1325915
URL: http://svn.apache.org/viewvc?rev=1325915&view=rev
Log:
Improve the sample depth scaling for greyscale PNG files.
Jira info key: SANSELAN-72
Modified:
commons/proper/sanselan/trunk/src/main/java/org/apache/commons/sanselan/formats/png/BitParser.java
Modified: commons/proper/sanselan/trunk/src/main/java/org/apache/commons/sanselan/formats/png/BitParser.java
URL: http://svn.apache.org/viewvc/commons/proper/sanselan/trunk/src/main/java/org/apache/commons/sanselan/formats/png/BitParser.java?rev=1325915&r1=1325914&r2=1325915&view=diff
==============================================================================
--- commons/proper/sanselan/trunk/src/main/java/org/apache/commons/sanselan/formats/png/BitParser.java (original)
+++ commons/proper/sanselan/trunk/src/main/java/org/apache/commons/sanselan/formats/png/BitParser.java Fri Apr 13 19:33:22 2012
@@ -63,7 +63,7 @@ public class BitParser
int rot = 8 - bitDepth;
if (rot > 0)
- sample <<= rot;
+ sample = sample * 255 / ((1 << bitDepth) - 1);
else if (rot < 0)
sample >>= -rot;