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Add PNG connection type and Freetype 2 font rendering to glcd driver. The PNG

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image writer is for debugging only. The Freetype font renderer still misses
some features (e.g. big numbers, character encoding, non-standard cell size).
This commit is contained in:
mmdolze
2011-11-03 22:09:24 +00:00
parent b1e8fa9fb8
commit 2e2bb53af8
13 changed files with 749 additions and 136 deletions
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acinclude.m4
+54 -1
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@@ -170,6 +170,9 @@ dnl else
if test "$ac_cv_port_have_lpt" = yes ; then
GLCD_DRIVERS="$GLCD_DRIVERS glcd-t6963.o t6963_low.o"
fi
if test "$enable_libpng" = yes ; then
GLCD_DRIVERS="$GLCD_DRIVERS glcd-glcd-png.o"
fi
DRIVERS="$DRIVERS glcd${SO}"
actdrivers=["$actdrivers glcd"]
;;
@@ -1057,7 +1060,7 @@ AC_DEFUN([AX_CXXFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
[AX_CXXFLAGS_GCC_OPTION_NEW($@)],[AX_CXXFLAGS_GCC_OPTION_OLD($@)])])
dnl
dnl Check if system has SA_RESTART defined. Copied from GNU's make configure.
dnl Check if system has SA_RESTART defined. Copied from GNUs make configure.
dnl
AC_DEFUN([LCD_SA_RESTART], [
AC_CACHE_CHECK([for SA_RESTART], lcd_cv_sa_restart, [
@@ -1070,3 +1073,53 @@ if test "$lcd_cv_sa_restart" != no; then
[Define to 1 if <signal.h> defines the SA_RESTART constant.])
fi
])
dnl
dnl Check for PNG library
dnl
AC_DEFUN([LCD_PNG_LIB], [
AC_MSG_CHECKING([if PNG support has been enabled]);
AC_ARG_ENABLE(libpng,
[AS_HELP_STRING([--disable-png],[disable PNG support using libpng])],
[ if test "$enableval" != "no"; then
enable_libpng=yes
fi ],
[ enable_libpng=yes ]
)
AC_MSG_RESULT($enable_libpng)
if test "$enable_libpng" = "yes"; then
AC_PATH_PROG([_png_config], [libpng-config])
_libpng_save_libs=$LIBS
_libpng_save_cflags=$CFLAGS
if test x$_png_config != "x" ; then
_libpng_try_libs=`$_png_config --ldflags`
_libpng_try_cflags=`$_png_config --cflags`
fi
LIBS="$LIBS $_libpng_try_libs"
CFLAGS="$CFLAGS $_libpng_try_cflags"
AC_MSG_CHECKING([whether libpng is present and sane])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <png.h>],[
png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
])],enable_libpng=yes,enable_libpng=no)
AC_MSG_RESULT([$enable_libpng])
if test "$enable_libpng" = "yes" ; then
AC_DEFINE(HAVE_LIBPNG, [1], [Define to 1 if you have libpng])
AC_SUBST(LIBPNG_CFLAGS, $_libpng_try_cflags)
AC_SUBST(LIBPNG_LIBS, $_libpng_try_libs)
fi
LIBS=$_libpng_save_libs
CFLAGS=$_libpng_save_cflags
unset _libpng_save_libs
unset _libpng_save_cflags
unset _libpng_try_libs
unset _libpng_try_cflags
unset _png_config
fi
])