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[libpng17] Update CHANGES and ANNOUNCE for Write code update (John Bowler)

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Glenn Randers-Pehrson
2016-05-04 22:02:52 -05:00
parent cde9b583a8
commit e966fac5ac
5 changed files with 47 additions and 11 deletions
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pngwutil.c
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@@ -3341,7 +3341,7 @@ huffman_metric(png_byte prefix, png_const_bytep data, size_t length)
* Huffman code length limit of 15, so any symbol must occupy at least
* 1/32768 of the code space. Zlib also shows some unexpected behavior with
* window size increases; data compression can decrease, leading me (JB
* 20160202) to hypothesise that the addition of extra, infrequently used,
* 20160202) to hypothesize that the addition of extra, infrequently used,
* zlib length codes damages the overall compression by reducing the
* efficiency of the Huffman coding.
*