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[devel] Add comment in pngtest.c about setting zlib strategy for text

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compression
This commit is contained in:
Glenn Randers-Pehrson 2011-04-01 20:41:53 -05:00
parent a45f47c225
commit 65a24d0638
2 changed files with 6 additions and 2 deletions
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2
pngrutil.c
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@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.5.2 [March 31, 2011]
* Last changed in libpng 1.5.3 [(PENDING RELEASE)]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)

6
pngtest.c
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@ -1,7 +1,7 @@
/* pngtest.c - a simple test program to test libpng
*
* Last changed in libpng 1.5.0 [January 6, 2011]
* Last changed in libpng 1.5.3 [(PENDING RELEASE)]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -914,6 +914,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#endif
#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION
/* Normally one would use Z_DEFAULT_STRATEGY for text compression.
* This is here just to make pngtest replicate the results from libpng
* versions prior to 1.5.3, and to test this new API.
*/
png_set_text_compression_strategy(write_ptr, Z_FILTERED);
#endif