gst1-vaapi: add optional encoder support

Signed-off-by: Adam Duskett <Adamduskett@outlook.com>
[Thomas: pass explicit --enable-encoders.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/gstreamer1/gst1-vaapi/Config.in

@@ -38,6 +38,13 @@ config BR2_PACKAGE_GST1_VAAPI
 
 	  https://cgit.freedesktop.org/gstreamer/gstreamer-vaapi
 
+if BR2_PACKAGE_GST1_VAAPI
+
+config BR2_PACKAGE_GST1_VAAPI_ENCODERS
+	bool "enable encoders"
+
+endif
+
 comment "gst1-vaapi needs udev /dev management and a toolchain w/ threads, dynamic library"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS || \
 		!BR2_PACKAGE_HAS_UDEV

package/gstreamer1/gst1-vaapi/gst1-vaapi.mk

@@ -18,11 +18,16 @@ GST1_VAAPI_DEPENDENCIES += \
 	libdrm
 
 GST1_VAAPI_CONF_OPTS += \
-	--disable-encoders \
 	--disable-x11 \
 	--disable-glx \
 	--disable-wayland \
 	--disable-egl \
 	--disable-gtk-doc-html
 
+ifeq ($(BR2_PACKAGE_GST1_VAAPI_ENCODERS),y)
+GST1_VAAPI_CONF_OPTS += --enable-encoders
+else
+GST1_VAAPI_CONF_OPTS += --disable-encoders
+endif
+
 $(eval $(autotools-package))