Update bundled libpng to version 1.6.50 dated 2025-07-01

1 files changed, 21 insertions, 22 deletions

diff --git a/png/TODO b/png/TODO
index 562dab069..8ddb7d123 100644
--- a/png/TODO
+++ b/png/TODO
@@ -1,23 +1,22 @@
-TODO - list of things to do for libpng:
+TODO list for libpng
+--------------------
 
-* Fix all defects (duh!)
-* Better C++ wrapper / full C++ implementation (?)
-* Fix the problems with C++ and 'extern "C"'.
-* cHRM transformation.
-* Palette creation.
-* "grayscale->palette" transformation and "palette->grayscale" detection.
-* Improved dithering.
-* Multi-lingual error and warning message support.
-* Complete sRGB transformation.  (Currently it simply uses gamma=0.45455.)
-* Man pages for function calls.
-* Better documentation.
-* Better filter selection
-  (e.g., counting huffman bits/precompression; filter inertia; filter costs).
-* Histogram creation.
-* Text conversion between different code pages (e.g., Latin-1 -> Mac).
-* Avoid building gamma tables whenever possible.
-* Greater precision in changing to linear gamma for compositing against
-  background, and in doing rgb-to-gray transformations.
-* Investigate pre-incremented loop counters and other loop constructions.
-* Interpolated method of handling interlacing.
-* More validations for libpng transformations.
+ * Fix all defects (duh!)
+ * cHRM transformation.
+ * Palette creation.
+ * "grayscale->palette" transformation and "palette->grayscale" detection.
+ * Improved dithering.
+ * Multi-lingual error and warning message support.
+ * Complete sRGB transformation.  (Currently it simply uses gamma=0.45455.)
+ * Man pages for function calls.
+ * Better documentation.
+ * Better filter selection
+   (e.g., counting huffman bits/precompression; filter inertia; filter costs).
+ * Histogram creation.
+ * Text conversion between different code pages (e.g., Latin-1 to Mac).
+ * Avoid building gamma tables whenever possible.
+ * Greater precision in changing to linear gamma for compositing against
+   background, and in doing rgb-to-gray transformations.
+ * Investigate pre-incremented loop counters and other loop constructions.
+ * Interpolated method of handling interlacing.
+ * More validations for libpng transformations.