winscreencap: Integrate into autotools build system

Fixes bug #672031.

configure.ac

@@ -528,6 +528,36 @@ AG_GST_CHECK_FEATURE(DIRECTDRAW, [DirectDraw plug-in], directdrawsink, [
   AC_SUBST(HAVE_DIRECTDRAW)
 ])
 
+dnl Direct3D9
+AM_CONDITIONAL(USE_DIRECT3D9, true)
+AG_GST_CHECK_FEATURE(DIRECT3D9, [Direct3D9], winscreencap, [
+  HAVE_DIRECT3D="no"
+
+  save_LIBS="$LIBS"
+
+  LIBS="$LIBS -ld3d9 -lgdi32"
+  AC_MSG_CHECKING(for Direct3D9 LDFLAGS)
+
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#include <windows.h>
+#include <d3d9.h>
+]], [[
+  Direct3DCreate9(D3D_SDK_VERSION);
+]])],
+    [HAVE_DIRECT3D9="yes"],
+    [HAVE_DIRECT3D9="no"])
+  AC_MSG_RESULT($HAVE_DIRECT3D9)
+
+  LIBS=$save_LIBS
+
+  if test "x$HAVE_DIRECT3D9" = "xyes";  then
+
+    DIRECT3D9_LIBS="-ld3d9 -lgdi32"
+    AC_SUBST(DIRECT3D9_LIBS)
+  fi
+  AC_SUBST(HAVE_DIRECT3D9)
+])
+
 dnl *** AppleMedia (OS X and iOS) ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_APPLE_MEDIA, true)
 HAVE_APPLE_MEDIA="no"

sys/winscreencap/Makefile.am

@@ -1,8 +1,11 @@
-# This plugin isn't buildable with autotools at this point in time, so just
-# ensure everything's listed in EXTRA_DIST
+plugin_LTLIBRARIES = libgstwinscreencap.la
 
-EXTRA_DIST = \
-	gstdx9screencapsrc.c gstdx9screencapsrc.h \
-	gstgdiscreencapsrc.c gstgdiscreencapsrc.h \
-	gstwinscreencap.c gstwinscreencap.h
+libgstwinscreencap_la_SOURCES = gstdx9screencapsrc.c  gstgdiscreencapsrc.c  gstwinscreencap.c
+libgstwinscreencap_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) \
+	$(GST_PLUGINS_BASE_CFLAGS)
+libgstwinscreencap_la_LIBADD = $(GST_BASE_LIBS) $(GST_PLUGINS_BASE_LIBS) \
+	$(DIRECT3D9_LIBS)
+libgstwinscreencap_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+libgstwinscreencap_la_LIBTOOLFLAGS = --tag=disable-static
 
+noinst_HEADERS= gstwinscreencap.h