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- # write.dfa
- # Build time configuration of libpng
- #
- # Author: John Bowler
- # Copyright: (c) John Bowler, 2013
- # Usage rights:
- # To the extent possible under law, the author has waived all copyright and
- # related or neighboring rights to this work. This work is published from:
- # United States.
- #
- # Build libpng with no read support and minimal write support.
- #
- everything = off
- # Switch on the write code - this makes a minimalist encoder
- option WRITE on
- # Choose fixed or floating point APIs and arithmetic. The choices are
- # independent but normally they will match. It is typically better to use the
- # floating point if you have floating point hardware. If you don't know, or
- # (perhaps) to make libpng smaller used fixed point throughout.
- #Fixed point:
- #option FIXED_POINT on
- #option FLOATING_ARITHMETIC off
- #Floating point:
- option FLOATING_POINT on
- option FLOATING_ARITHMETIC on
- # Basic error handling, IO and user memory support. The latter allows the
- # application program to provide its own implementations of 'malloc' and 'free'.
- option SETJMP on
- option STDIO on
- option USER_MEM on
- # Everything else is optional. Unlike the read code in libpng the write code
- # does not need to deal with arbitrary formats, so only add support for things
- # you really do write! For example you might only write sRGB images, sometimes
- # with transparency and never write 16 bit images, so:
- option WRITE_sRGB on
- option WRITE_tRNS on
- #option WRITE_16BIT off (this is the default with 'everything = off')
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