| 1 | # s_read.dfa
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| 2 | # Build time configuration of libpng
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| 3 | #
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| 4 | # Author: John Bowler
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| 5 | # Copyright: (c) John Bowler, 2013
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| 6 | # Usage rights:
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| 7 | # To the extent possible under law, the author has waived all copyright and
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| 8 | # related or neighboring rights to this work. This work is published from:
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| 9 | # United States.
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| 10 | #
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| 11 | # Build libpng with simplified read support (only). This builds a minimal
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| 12 | # libpng able to read all PNG formats and convert them into a small number of
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| 13 | # well understood memory formats.
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| 14 | #
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| 15 |
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| 16 | everything = off
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| 17 |
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| 18 | option SIMPLIFIED_READ on
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| 19 |
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| 20 | # It isn't necessary to chose fixed or floating point for the APIs because the
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| 21 | # simplified API doesn't need fixed or floating point numbers. It is necessary
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| 22 | # to chose an internal math implementation. The default (because of 'everything
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| 23 | # = off') is fixed point - turn the floating point implementation on if you have
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| 24 | # hardware floating point or prefer your software floating point implementation.
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| 25 | option FLOATING_ARITHMETIC on
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| 26 |
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| 27 | # This is not strictly necessary, but without it the message strings in the API
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| 28 | # will not be filled in
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| 29 | option ERROR_TEXT on
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| 30 |
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| 31 | # Switching these options on enables the 'AFIRST' and 'BGR' formats - you don't
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| 32 | # need this if you don't use them, they just allow the in-memory layout to be
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| 33 | # changed to match common hardware formats.
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| 34 | option SIMPLIFIED_READ_AFIRST on
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| 35 | option SIMPLIFIED_READ_BGR on
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