+if test $with_libavcodec = "yes" ; then {
+
+ # Need to check both the new and old locations for the avformat header
+ # Need to save flags, add avformat flags, check headers and restore flags
+ ac_save_CPPFLAGS="$CPPFLAGS"
+ ac_save_CFLAGS="$CFLAGS"
+ CPPFLAGS="${CPPFLAGS} ${LIBAVCODEC_CFLAGS}"
+ CFLAGS="${CFLAGS} ${LIBAVCODEC_CFLAGS}"
+ AC_CHECK_HEADERS(libavformat/avformat.h avformat.h ffmpeg/avformat.h)
+ CPPFLAGS="${ac_save_CPPFLAGS}"
+ CFLAGS="${ac_save_CFLAGS}"
+
+ AC_ARG_WITH(libswscale,
+ [AS_HELP_STRING([--without-libswscale],
+ [disable support for libswscale (Default=auto)])],
+ [],
+ [with_libswscale="yes"]
+ )
+
+ if test $with_libswscale != "no" ; then {
+ PKG_CHECK_MODULES(LIBSWSCALE, [libswscale], [], [echo no; with_libswscale="no"])
+ } ; fi
+
+ if test $with_libswscale = "yes" ; then {
+ AC_DEFINE(WITH_LIBSWSCALE, [], [enable libswscale support])
+
+ # Need to check both the new and old locations for the swscale header
+ # Need to save flags, add swscale flags, check headers and restore flags
+ ac_save_CPPFLAGS="$CPPFLAGS"
+ ac_save_CFLAGS="$CFLAGS"
+ CPPFLAGS="${CPPFLAGS} ${LIBSWSCALE_CFLAGS}"
+ CFLAGS="${CFLAGS} ${LIBSWSCALE_CFLAGS}"
+ AC_CHECK_HEADERS(libswscale/swscale.h swscale.h ffmpeg/swscale.h)
+ CPPFLAGS="${ac_save_CPPFLAGS}"
+ CFLAGS="${ac_save_CFLAGS}"
+ } else {
+ AC_CHECK_LIB(avcodec, img_convert,
+ [AC_MSG_RESULT([ *** Using deprecated function img_convert.])],
+ [AC_MSG_FAILURE([Neither libswscale nor function img_convert was found.])],
+ []
+ )
+ } ; fi
+} ; fi
+AM_CONDITIONAL(WITH_LIBSWSCALE, test "x$with_libswscale" = "xyes")
+