commit c683100e319c056ce9e0b293e0245eb9caa55642
author Glenn Randers-Pehrson <glennrp at users.sourceforge.net> Fri Apr 01 15:24:18 2011 -0500
committer Glenn Randers-Pehrson <glennrp at users.sourceforge.net> Fri Apr 01 15:24:18 2011 -0500
tree 939f4c1feba62bad52378bc4de43b4d27b02933f
parent ec8296ab8170b06795ac6cfed2d690ecf1dae362

[devel] zlib text compression parameters fall back on non-IDAT parameters

except for strategy which defaults to the zlib default.

pngwutil.c

diff --git a/pngwutil.c b/pngwutil.c
index 84b5a53..bf5872f 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -670,22 +670,22 @@
       png_ptr->zlib_text_strategy = Z_DEFAULT_STRATEGY;
 
    if (!(png_ptr->flags & PNG_FLAG_ZTXT_CUSTOM_LEVEL))
-      png_ptr->zlib_text_level = Z_DEFAULT_COMPRESSION;
+      png_ptr->zlib_text_level = png_ptr->zlib_level;
 
    if (!(png_ptr->flags & PNG_FLAG_ZTXT_CUSTOM_MEM_LEVEL))
-      png_ptr->zlib_text_mem_level = 8;
+      png_ptr->zlib_text_mem_level = png_ptr->zlib_mem_level;
 
    if (!(png_ptr->flags & PNG_FLAG_ZTXT_CUSTOM_WINDOW_BITS))
-      png_ptr->zlib_text_window_bits = 15;
+      png_ptr->zlib_text_window_bits = png_ptr->zlib_window_bits;
 
    if (!(png_ptr->flags & PNG_FLAG_ZTXT_CUSTOM_METHOD))
-      png_ptr->zlib_text_method = 8;
+      png_ptr->zlib_text_method = png_ptr->zlib_method;
 #else
    png_ptr->zlib_text_strategy = Z_DEFAULT_STRATEGY;
-   png_ptr->zlib_text_level = Z_DEFAULT_COMPRESSION;
-   png_ptr->zlib_text_mem_level = 8;
-   png_ptr->zlib_text_window_bits = 15;
-   png_ptr->zlib_text_method = 8;
+   png_ptr->zlib_text_level = png_ptr->zlib_level;
+   png_ptr->zlib_text_mem_level = png_ptr->zlib_mem_level;
+   png_ptr->zlib_text_window_bits = png_ptr->zlib_window_bits;
+   png_ptr->zlib_text_method = png_ptr->zlib_method;
 #endif /* PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION */
 #endif /* PNG_WRITE_COMPRESSED_TEXT_SUPPORTED */