| # 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') |
