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dnl Perform a check for a GStreamer element using gst-inspect-x.y
dnl
dnl GST_ELEMENT_CHECK(ELEMENT-NAME, MIN-VERSION, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
dnl
dnl ELEMENT-NAME : element factory name (mandatory)
dnl MIN-VERSION : minimum version required, e.g. 1.0 or 1.0.5 (mandatory)
dnl ACTION-IF_FOUND : action if element exists and is of the desired version
dnl ACTION-IF-NOT-FOUND : action if element does not exist or is too old
dnl
dnl gstapiversion=`echo $2 | tr '.' '\n' | head -n 2 | tr '\n' '.' | sed 's/\.$//'`
AC_DEFUN([GST_ELEMENT_CHECK],
[
AC_REQUIRE([PKG_PROG_PKG_CONFIG])
gstapiversion=`echo "$2" | while IFS=. read a b; do echo "$a.0"; done`
gsttoolsdir=`$PKG_CONFIG --variable=toolsdir gstreamer-$gstapiversion`
if test "x$gsttoolsdir" != "x"; then
gstinspect="$gsttoolsdir/gst-inspect-$gstapiversion"
AC_MSG_CHECKING(GStreamer $gstapiversion element $1 >= $2)
if [ $gstinspect --exists --atleast-version=$2 $1 ]; then
AC_MSG_RESULT([found])
$3
else
if [ $gstinspect --exists $1 ]; then
AC_MSG_RESULT([found, but too old])
else
AC_MSG_RESULT([not found])
fi
$4
fi
fi
])
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