Derive more useful traits for various enums

gstreamer-audio/src/audio_format_info.rs

@@ -17,7 +17,7 @@ use std::str;
 use glib;
 use glib::translate::{from_glib, FromGlib, FromGlibPtrNone, ToGlib, ToGlibPtr, ToGlibPtrMut};
 
-#[derive(PartialEq, Eq, Debug)]
+#[derive(PartialEq, Eq, Copy, Clone, Debug, Hash)]
 pub enum AudioEndianness {
     Unknown,
     LittleEndian = 1234,

gstreamer-video/src/video_format.rs

@@ -14,7 +14,7 @@ use std::str;
 
 use glib::translate::{from_glib, FromGlib, ToGlib, ToGlibPtr};
 
-#[derive(PartialEq, Eq, Debug)]
+#[derive(PartialEq, Eq, Copy, Clone, Debug, Hash)]
 pub enum VideoEndianness {
     Unknown,
     LittleEndian = 1234,

gstreamer/src/element.rs

@@ -54,6 +54,7 @@ impl Element {
     }
 }
 
+#[derive(PartialEq, Eq, Copy, Clone, Debug, Hash)]
 pub enum ElementMessageType {
     Error,
     Warning,

gstreamer/src/value.rs

@@ -663,6 +663,7 @@ impl<'a> glib::types::StaticType for List<'a> {
     }
 }
 
+#[derive(PartialEq, Eq, Copy, Clone, Debug, Hash)]
 pub enum ValueOrder {
     LessThan,
     Equal,