# s_read.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 simplified read support (only).  This builds a minimal
# libpng able to read all PNG formats and convert them into a small number of
# well understood memory formats.
#

everything = off

option SIMPLIFIED_READ on

# It isn't necessary to chose fixed or floating point for the APIs because the
# simplified API doesn't need fixed or floating point numbers.  It is necessary
# to chose an internal math implementation.  The default (because of 'everything
# = off') is fixed point - turn the floating point implementation on if you have
# hardware floating point or prefer your software floating point implementation.
option FLOATING_ARITHMETIC on

# This is not strictly necessary, but without it the message strings in the API
# will not be filled in
option ERROR_TEXT on

# Switching these options on enables the 'AFIRST' and 'BGR' formats - you don't
# need this if you don't use them, they just allow the in-memory layout to be
# changed to match common hardware formats.
option SIMPLIFIED_READ_AFIRST on
option SIMPLIFIED_READ_BGR on