Use gst-plugin-version-helper crate to populate the plugin metadata

Cargo.toml

@@ -4,6 +4,7 @@ version = "1.0.0"
 authors = ["Ruben Gonzalez <rubenrua@teltek.es>", "Daniel Vilar <daniel.peiteado@teltek.es>"]
 repository = "https://github.com/teltek/gst-plugin-ndi"
 license = "LGPL"
+description = "NewTek NDI Plugin"
 
 [dependencies]
 glib = { version = "0.8.0", features = ["subclassing"] }
@@ -14,6 +15,9 @@ gstreamer-video = "0.14.0"
 lazy_static = "1.1.0"
 byte-slice-cast = "0.2.0"
 
+[build-dependencies]
+gst-plugin-version-helper = "0.1"
+
 [lib]
 name = "gstndi"
 crate-type = ["cdylib"]

build.rs

@@ -0,0 +1,5 @@
+extern crate gst_plugin_version_helper;
+
+fn main() {
+    gst_plugin_version_helper::get_info()
+}

src/lib.rs

@@ -255,12 +255,12 @@ fn stop_ndi(cat: gst::DebugCategory, element: &gst_base::BaseSrc, id: i8) -> boo
 
 gst_plugin_define!(
     ndi,
-    "NewTek NDI Plugin",
+    env!("CARGO_PKG_DESCRIPTION"),
     plugin_init,
-    "1.0.0",
+    concat!(env!("CARGO_PKG_VERSION"), "-", env!("COMMIT_ID")),
     "LGPL",
-    "ndi",
-    "ndi",
-    "https://github.com/teltek/gst-plugin-ndi",
-    "2018-04-09"
+    env!("CARGO_PKG_NAME"),
+    env!("CARGO_PKG_NAME"),
+    env!("CARGO_PKG_REPOSITORY"),
+    env!("BUILD_REL_DATE")
 );