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[libpng16] Allow fine grain control of unknown chunk APIs. This change allows

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png_set_keep_unknown_chunks() to be turned off if not required and causes
both read and write to behave appropriately (on read this is only possible
if the user callback is used to handle unknown chunks).  The change
also removes the support for storing unknown chunks in the info_struct
if the only unknown handling enabled is via the callback, allowing libpng
to be configured with callback reading and none of the unnecessary code.
This commit is contained in:
John Bowler
2012-08-16 16:12:13 -05:00
committed by Glenn Randers-Pehrson
parent 025d415838
commit 4a6c6df6c7
7 changed files with 74 additions and 20 deletions
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@@ -4201,6 +4201,13 @@ Version 1.6.0beta28 [August 16, 2012]
There is a new test program, test-unknown.c, which is a work in progress
(not currently part of the test suite). Comments in the header files now
explain how the unknown handling works.
Allow fine grain control of unknown chunk APIs. This change allows
png_set_keep_unknown_chunks() to be turned off if not required and causes
both read and write to behave appropriately (on read this is only possible
if the user callback is used to handle unknown chunks). The change
also removes the support for storing unknown chunks in the info_struct
if the only unknown handling enabled is via the callback, allowing libpng
to be configured with callback reading and none of the unnecessary code.
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