Make sure the PNG filter type is always initialized: code moved from …

…setQuality() to class constructor
ruven · Mar 23, 2023 · 67293ff · 67293ff
1 parent 4b29a43
commit 67293ff
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Showing 2 changed files with 9 additions and 5 deletions.
diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,7 @@
+23/03/2023:
+	- Make sure the PNG filter type is always initialized: code moved from setQuality() to class constructor
+
+
 22/03/2023:
 	- Added partial support for non-interleaved planar configuration TIFFs where each color channel is stored separately.
 	  For the moment, only the first channel is returned for such images.

diff --git a/src/PNGCompressor.h b/src/PNGCompressor.h
@@ -1,7 +1,7 @@
 /*  IIP PNG Compressor Class:
     Handles alpha channels, 8 or 16 bit data, ICC profiles and XMP metadata
 
-    Copyright (C) 2012-2021 Ruven Pillay
+    Copyright (C) 2012-2023 Ruven Pillay
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -93,6 +93,10 @@ class PNGCompressor : public Compressor {
     // Zlib range is 0-9
     this->Q = compressionLevel;
 
+    // Filters are an optional pre-processing step before Deflate compression
+    //  - set this to the fastest set of filters
+    filterType = PNG_FAST_FILTERS;
+
   };
 
 
@@ -159,10 +163,6 @@ class PNGCompressor : public Compressor {
     if( quality < 0 ) Q = 0;
     else if( quality > 9 ) Q = 9;
     else Q = quality;
-
-    // Filters are an optional pre-processing step before Deflate compression
-    //  - set this to the fastest set of filters
-    filterType = PNG_FAST_FILTERS;
   }